2 * thinkpad_acpi.c - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26 #define TPACPI_VERSION "0.24"
27 #define TPACPI_SYSFS_VERSION 0x020700
31 * 2007-10-20 changelog trimmed down
33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
36 * 2006-11-22 0.13 new maintainer
37 * changelog now lives in git commit history, and will
38 * not be updated further in-file.
40 * 2005-03-17 0.11 support for 600e, 770x
41 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
43 * 2005-01-16 0.9 use MODULE_VERSION
44 * thanks to Henrik Brix Andersen <brix@gentoo.org>
45 * fix parameter passing on module loading
46 * thanks to Rusty Russell <rusty@rustcorp.com.au>
47 * thanks to Jim Radford <radford@blackbean.org>
48 * 2004-11-08 0.8 fix init error case, don't return from a macro
49 * thanks to Chris Wright <chrisw@osdl.org>
52 #include <linux/kernel.h>
53 #include <linux/module.h>
54 #include <linux/init.h>
55 #include <linux/types.h>
56 #include <linux/string.h>
57 #include <linux/list.h>
58 #include <linux/mutex.h>
59 #include <linux/sched.h>
60 #include <linux/kthread.h>
61 #include <linux/freezer.h>
62 #include <linux/delay.h>
63 #include <linux/slab.h>
65 #include <linux/nvram.h>
66 #include <linux/proc_fs.h>
67 #include <linux/seq_file.h>
68 #include <linux/sysfs.h>
69 #include <linux/backlight.h>
71 #include <linux/platform_device.h>
72 #include <linux/hwmon.h>
73 #include <linux/hwmon-sysfs.h>
74 #include <linux/input.h>
75 #include <linux/leds.h>
76 #include <linux/rfkill.h>
77 #include <asm/uaccess.h>
79 #include <linux/dmi.h>
80 #include <linux/jiffies.h>
81 #include <linux/workqueue.h>
83 #include <sound/core.h>
84 #include <sound/control.h>
85 #include <sound/initval.h>
87 #include <acpi/acpi_drivers.h>
89 #include <linux/pci_ids.h>
92 /* ThinkPad CMOS commands */
93 #define TP_CMOS_VOLUME_DOWN 0
94 #define TP_CMOS_VOLUME_UP 1
95 #define TP_CMOS_VOLUME_MUTE 2
96 #define TP_CMOS_BRIGHTNESS_UP 4
97 #define TP_CMOS_BRIGHTNESS_DOWN 5
98 #define TP_CMOS_THINKLIGHT_ON 12
99 #define TP_CMOS_THINKLIGHT_OFF 13
101 /* NVRAM Addresses */
103 TP_NVRAM_ADDR_HK2
= 0x57,
104 TP_NVRAM_ADDR_THINKLIGHT
= 0x58,
105 TP_NVRAM_ADDR_VIDEO
= 0x59,
106 TP_NVRAM_ADDR_BRIGHTNESS
= 0x5e,
107 TP_NVRAM_ADDR_MIXER
= 0x60,
110 /* NVRAM bit masks */
112 TP_NVRAM_MASK_HKT_THINKPAD
= 0x08,
113 TP_NVRAM_MASK_HKT_ZOOM
= 0x20,
114 TP_NVRAM_MASK_HKT_DISPLAY
= 0x40,
115 TP_NVRAM_MASK_HKT_HIBERNATE
= 0x80,
116 TP_NVRAM_MASK_THINKLIGHT
= 0x10,
117 TP_NVRAM_MASK_HKT_DISPEXPND
= 0x30,
118 TP_NVRAM_MASK_HKT_BRIGHTNESS
= 0x20,
119 TP_NVRAM_MASK_LEVEL_BRIGHTNESS
= 0x0f,
120 TP_NVRAM_POS_LEVEL_BRIGHTNESS
= 0,
121 TP_NVRAM_MASK_MUTE
= 0x40,
122 TP_NVRAM_MASK_HKT_VOLUME
= 0x80,
123 TP_NVRAM_MASK_LEVEL_VOLUME
= 0x0f,
124 TP_NVRAM_POS_LEVEL_VOLUME
= 0,
127 /* Misc NVRAM-related */
129 TP_NVRAM_LEVEL_VOLUME_MAX
= 14,
133 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
134 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
135 #define TPACPI_ACPI_EC_HID "PNP0C09"
138 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
139 #define TPACPI_HKEY_INPUT_VERSION 0x4101
141 /* ACPI \WGSV commands */
143 TP_ACPI_WGSV_GET_STATE
= 0x01, /* Get state information */
144 TP_ACPI_WGSV_PWR_ON_ON_RESUME
= 0x02, /* Resume WWAN powered on */
145 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
= 0x03, /* Resume WWAN powered off */
146 TP_ACPI_WGSV_SAVE_STATE
= 0x04, /* Save state for S4/S5 */
149 /* TP_ACPI_WGSV_GET_STATE bits */
151 TP_ACPI_WGSV_STATE_WWANEXIST
= 0x0001, /* WWAN hw available */
152 TP_ACPI_WGSV_STATE_WWANPWR
= 0x0002, /* WWAN radio enabled */
153 TP_ACPI_WGSV_STATE_WWANPWRRES
= 0x0004, /* WWAN state at resume */
154 TP_ACPI_WGSV_STATE_WWANBIOSOFF
= 0x0008, /* WWAN disabled in BIOS */
155 TP_ACPI_WGSV_STATE_BLTHEXIST
= 0x0001, /* BLTH hw available */
156 TP_ACPI_WGSV_STATE_BLTHPWR
= 0x0002, /* BLTH radio enabled */
157 TP_ACPI_WGSV_STATE_BLTHPWRRES
= 0x0004, /* BLTH state at resume */
158 TP_ACPI_WGSV_STATE_BLTHBIOSOFF
= 0x0008, /* BLTH disabled in BIOS */
159 TP_ACPI_WGSV_STATE_UWBEXIST
= 0x0010, /* UWB hw available */
160 TP_ACPI_WGSV_STATE_UWBPWR
= 0x0020, /* UWB radio enabled */
164 enum tpacpi_hkey_event_t
{
166 TP_HKEY_EV_HOTKEY_BASE
= 0x1001, /* first hotkey (FN+F1) */
167 TP_HKEY_EV_BRGHT_UP
= 0x1010, /* Brightness up */
168 TP_HKEY_EV_BRGHT_DOWN
= 0x1011, /* Brightness down */
169 TP_HKEY_EV_VOL_UP
= 0x1015, /* Volume up or unmute */
170 TP_HKEY_EV_VOL_DOWN
= 0x1016, /* Volume down or unmute */
171 TP_HKEY_EV_VOL_MUTE
= 0x1017, /* Mixer output mute */
173 /* Reasons for waking up from S3/S4 */
174 TP_HKEY_EV_WKUP_S3_UNDOCK
= 0x2304, /* undock requested, S3 */
175 TP_HKEY_EV_WKUP_S4_UNDOCK
= 0x2404, /* undock requested, S4 */
176 TP_HKEY_EV_WKUP_S3_BAYEJ
= 0x2305, /* bay ejection req, S3 */
177 TP_HKEY_EV_WKUP_S4_BAYEJ
= 0x2405, /* bay ejection req, S4 */
178 TP_HKEY_EV_WKUP_S3_BATLOW
= 0x2313, /* battery empty, S3 */
179 TP_HKEY_EV_WKUP_S4_BATLOW
= 0x2413, /* battery empty, S4 */
181 /* Auto-sleep after eject request */
182 TP_HKEY_EV_BAYEJ_ACK
= 0x3003, /* bay ejection complete */
183 TP_HKEY_EV_UNDOCK_ACK
= 0x4003, /* undock complete */
185 /* Misc bay events */
186 TP_HKEY_EV_OPTDRV_EJ
= 0x3006, /* opt. drive tray ejected */
187 TP_HKEY_EV_HOTPLUG_DOCK
= 0x4010, /* docked into hotplug dock
188 or port replicator */
189 TP_HKEY_EV_HOTPLUG_UNDOCK
= 0x4011, /* undocked from hotplug
190 dock or port replicator */
192 /* User-interface events */
193 TP_HKEY_EV_LID_CLOSE
= 0x5001, /* laptop lid closed */
194 TP_HKEY_EV_LID_OPEN
= 0x5002, /* laptop lid opened */
195 TP_HKEY_EV_TABLET_TABLET
= 0x5009, /* tablet swivel up */
196 TP_HKEY_EV_TABLET_NOTEBOOK
= 0x500a, /* tablet swivel down */
197 TP_HKEY_EV_PEN_INSERTED
= 0x500b, /* tablet pen inserted */
198 TP_HKEY_EV_PEN_REMOVED
= 0x500c, /* tablet pen removed */
199 TP_HKEY_EV_BRGHT_CHANGED
= 0x5010, /* backlight control event */
201 /* Key-related user-interface events */
202 TP_HKEY_EV_KEY_NUMLOCK
= 0x6000, /* NumLock key pressed */
203 TP_HKEY_EV_KEY_FN
= 0x6005, /* Fn key pressed? E420 */
206 TP_HKEY_EV_ALARM_BAT_HOT
= 0x6011, /* battery too hot */
207 TP_HKEY_EV_ALARM_BAT_XHOT
= 0x6012, /* battery critically hot */
208 TP_HKEY_EV_ALARM_SENSOR_HOT
= 0x6021, /* sensor too hot */
209 TP_HKEY_EV_ALARM_SENSOR_XHOT
= 0x6022, /* sensor critically hot */
210 TP_HKEY_EV_THM_TABLE_CHANGED
= 0x6030, /* thermal table changed */
212 TP_HKEY_EV_UNK_6040
= 0x6040, /* Related to AC change?
213 some sort of APM hint,
217 TP_HKEY_EV_RFKILL_CHANGED
= 0x7000, /* rfkill switch changed */
220 /****************************************************************************
224 #define TPACPI_NAME "thinkpad"
225 #define TPACPI_DESC "ThinkPad ACPI Extras"
226 #define TPACPI_FILE TPACPI_NAME "_acpi"
227 #define TPACPI_URL "http://ibm-acpi.sf.net/"
228 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
230 #define TPACPI_PROC_DIR "ibm"
231 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
232 #define TPACPI_DRVR_NAME TPACPI_FILE
233 #define TPACPI_DRVR_SHORTNAME "tpacpi"
234 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
236 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
237 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
239 #define TPACPI_MAX_ACPI_ARGS 3
241 /* Debugging printk groups */
242 #define TPACPI_DBG_ALL 0xffff
243 #define TPACPI_DBG_DISCLOSETASK 0x8000
244 #define TPACPI_DBG_INIT 0x0001
245 #define TPACPI_DBG_EXIT 0x0002
246 #define TPACPI_DBG_RFKILL 0x0004
247 #define TPACPI_DBG_HKEY 0x0008
248 #define TPACPI_DBG_FAN 0x0010
249 #define TPACPI_DBG_BRGHT 0x0020
250 #define TPACPI_DBG_MIXER 0x0040
252 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
253 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
254 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
257 /****************************************************************************
258 * Driver-wide structs and misc. variables
263 struct tp_acpi_drv_struct
{
264 const struct acpi_device_id
*hid
;
265 struct acpi_driver
*driver
;
267 void (*notify
) (struct ibm_struct
*, u32
);
270 struct acpi_device
*device
;
276 int (*read
) (struct seq_file
*);
277 int (*write
) (char *);
279 void (*resume
) (void);
280 void (*suspend
) (void);
281 void (*shutdown
) (void);
283 struct list_head all_drivers
;
285 struct tp_acpi_drv_struct
*acpi
;
288 u8 acpi_driver_registered
:1;
289 u8 acpi_notify_installed
:1;
296 struct ibm_init_struct
{
299 int (*init
) (struct ibm_init_struct
*);
300 umode_t base_procfs_mode
;
301 struct ibm_struct
*data
;
312 u32 bright_acpimode
:1;
316 u32 fan_ctrl_status_undef
:1;
318 u32 beep_needs_two_args
:1;
319 u32 mixer_no_level_control
:1;
320 u32 input_device_registered
:1;
321 u32 platform_drv_registered
:1;
322 u32 platform_drv_attrs_registered
:1;
323 u32 sensors_pdrv_registered
:1;
324 u32 sensors_pdrv_attrs_registered
:1;
325 u32 sensors_pdev_attrs_registered
:1;
326 u32 hotkey_poll_active
:1;
330 u16 hotkey_mask_ff
:1;
331 u16 volume_ctrl_forbidden
:1;
334 struct thinkpad_id_data
{
335 unsigned int vendor
; /* ThinkPad vendor:
336 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
338 char *bios_version_str
; /* Something like 1ZET51WW (1.03z) */
339 char *ec_version_str
; /* Something like 1ZHT51WW-1.04a */
341 u16 bios_model
; /* 1Y = 0x5931, 0 = unknown */
343 u16 bios_release
; /* 1ZETK1WW = 0x314b, 0 = unknown */
346 char *model_str
; /* ThinkPad T43 */
347 char *nummodel_str
; /* 9384A9C for a 9384-A9C model */
349 static struct thinkpad_id_data thinkpad_id
;
352 TPACPI_LIFE_INIT
= 0,
357 static int experimental
;
358 static u32 dbg_level
;
360 static struct workqueue_struct
*tpacpi_wq
;
368 /* Special LED class that can defer work */
369 struct tpacpi_led_classdev
{
370 struct led_classdev led_classdev
;
371 struct work_struct work
;
372 enum led_status_t new_state
;
376 /* brightness level capabilities */
377 static unsigned int bright_maxlvl
; /* 0 = unknown */
379 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
380 static int dbg_wlswemul
;
381 static bool tpacpi_wlsw_emulstate
;
382 static int dbg_bluetoothemul
;
383 static bool tpacpi_bluetooth_emulstate
;
384 static int dbg_wwanemul
;
385 static bool tpacpi_wwan_emulstate
;
386 static int dbg_uwbemul
;
387 static bool tpacpi_uwb_emulstate
;
391 /*************************************************************************
395 #define dbg_printk(a_dbg_level, format, arg...) \
397 if (dbg_level & (a_dbg_level)) \
398 printk(KERN_DEBUG pr_fmt("%s: " format), \
402 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
403 #define vdbg_printk dbg_printk
404 static const char *str_supported(int is_supported
);
406 static inline const char *str_supported(int is_supported
) { return ""; }
407 #define vdbg_printk(a_dbg_level, format, arg...) \
408 no_printk(format, ##arg)
411 static void tpacpi_log_usertask(const char * const what
)
413 printk(KERN_DEBUG
pr_fmt("%s: access by process with PID %d\n"),
414 what
, task_tgid_vnr(current
));
417 #define tpacpi_disclose_usertask(what, format, arg...) \
419 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
420 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
421 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
422 what, task_tgid_vnr(current), ## arg); \
427 * Quirk handling helpers
429 * ThinkPad IDs and versions seen in the field so far
430 * are two-characters from the set [0-9A-Z], i.e. base 36.
432 * We use values well outside that range as specials.
435 #define TPACPI_MATCH_ANY 0xffffU
436 #define TPACPI_MATCH_UNKNOWN 0U
438 /* TPID('1', 'Y') == 0x5931 */
439 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
441 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
442 { .vendor = PCI_VENDOR_ID_IBM, \
443 .bios = TPID(__id1, __id2), \
444 .ec = TPACPI_MATCH_ANY, \
445 .quirks = (__quirk) }
447 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
448 { .vendor = PCI_VENDOR_ID_LENOVO, \
449 .bios = TPID(__id1, __id2), \
450 .ec = TPACPI_MATCH_ANY, \
451 .quirks = (__quirk) }
453 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
454 { .vendor = PCI_VENDOR_ID_LENOVO, \
455 .bios = TPACPI_MATCH_ANY, \
456 .ec = TPID(__id1, __id2), \
457 .quirks = (__quirk) }
459 struct tpacpi_quirk
{
463 unsigned long quirks
;
467 * tpacpi_check_quirks() - search BIOS/EC version on a list
468 * @qlist: array of &struct tpacpi_quirk
469 * @qlist_size: number of elements in @qlist
471 * Iterates over a quirks list until one is found that matches the
472 * ThinkPad's vendor, BIOS and EC model.
474 * Returns 0 if nothing matches, otherwise returns the quirks field of
475 * the matching &struct tpacpi_quirk entry.
477 * The match criteria is: vendor, ec and bios much match.
479 static unsigned long __init
tpacpi_check_quirks(
480 const struct tpacpi_quirk
*qlist
,
481 unsigned int qlist_size
)
484 if ((qlist
->vendor
== thinkpad_id
.vendor
||
485 qlist
->vendor
== TPACPI_MATCH_ANY
) &&
486 (qlist
->bios
== thinkpad_id
.bios_model
||
487 qlist
->bios
== TPACPI_MATCH_ANY
) &&
488 (qlist
->ec
== thinkpad_id
.ec_model
||
489 qlist
->ec
== TPACPI_MATCH_ANY
))
490 return qlist
->quirks
;
498 static inline bool __pure __init
tpacpi_is_lenovo(void)
500 return thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
;
503 static inline bool __pure __init
tpacpi_is_ibm(void)
505 return thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
;
508 /****************************************************************************
509 ****************************************************************************
511 * ACPI Helpers and device model
513 ****************************************************************************
514 ****************************************************************************/
516 /*************************************************************************
520 static acpi_handle root_handle
;
521 static acpi_handle ec_handle
;
523 #define TPACPI_HANDLE(object, parent, paths...) \
524 static acpi_handle object##_handle; \
525 static const acpi_handle *object##_parent __initdata = \
527 static char *object##_paths[] __initdata = { paths }
529 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
530 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
532 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
534 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
535 "\\CMS", /* R40, R40e */
538 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
539 "^HKEY", /* R30, R31 */
540 "HKEY", /* all others */
543 /*************************************************************************
547 static int acpi_evalf(acpi_handle handle
,
548 void *res
, char *method
, char *fmt
, ...)
551 struct acpi_object_list params
;
552 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
553 struct acpi_buffer result
, *resultp
;
554 union acpi_object out_obj
;
562 pr_err("acpi_evalf() called with empty format\n");
575 params
.pointer
= &in_objs
[0];
582 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
583 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
585 /* add more types as needed */
587 pr_err("acpi_evalf() called "
588 "with invalid format character '%c'\n", c
);
595 if (res_type
!= 'v') {
596 result
.length
= sizeof(out_obj
);
597 result
.pointer
= &out_obj
;
602 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
606 success
= (status
== AE_OK
&&
607 out_obj
.type
== ACPI_TYPE_INTEGER
);
609 *(int *)res
= out_obj
.integer
.value
;
612 success
= status
== AE_OK
;
614 /* add more types as needed */
616 pr_err("acpi_evalf() called "
617 "with invalid format character '%c'\n", res_type
);
621 if (!success
&& !quiet
)
622 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
623 method
, fmt0
, acpi_format_exception(status
));
628 static int acpi_ec_read(int i
, u8
*p
)
633 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
637 if (ec_read(i
, p
) < 0)
644 static int acpi_ec_write(int i
, u8 v
)
647 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
650 if (ec_write(i
, v
) < 0)
657 static int issue_thinkpad_cmos_command(int cmos_cmd
)
662 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
668 /*************************************************************************
672 #define TPACPI_ACPIHANDLE_INIT(object) \
673 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
674 object##_paths, ARRAY_SIZE(object##_paths))
676 static void __init
drv_acpi_handle_init(const char *name
,
677 acpi_handle
*handle
, const acpi_handle parent
,
678 char **paths
, const int num_paths
)
683 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
686 for (i
= 0; i
< num_paths
; i
++) {
687 status
= acpi_get_handle(parent
, paths
[i
], handle
);
688 if (ACPI_SUCCESS(status
)) {
689 dbg_printk(TPACPI_DBG_INIT
,
690 "Found ACPI handle %s for %s\n",
696 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
701 static acpi_status __init
tpacpi_acpi_handle_locate_callback(acpi_handle handle
,
702 u32 level
, void *context
, void **return_value
)
704 *(acpi_handle
*)return_value
= handle
;
706 return AE_CTRL_TERMINATE
;
709 static void __init
tpacpi_acpi_handle_locate(const char *name
,
714 acpi_handle device_found
;
716 BUG_ON(!name
|| !hid
|| !handle
);
717 vdbg_printk(TPACPI_DBG_INIT
,
718 "trying to locate ACPI handle for %s, using HID %s\n",
721 memset(&device_found
, 0, sizeof(device_found
));
722 status
= acpi_get_devices(hid
, tpacpi_acpi_handle_locate_callback
,
723 (void *)name
, &device_found
);
727 if (ACPI_SUCCESS(status
)) {
728 *handle
= device_found
;
729 dbg_printk(TPACPI_DBG_INIT
,
730 "Found ACPI handle for %s\n", name
);
732 vdbg_printk(TPACPI_DBG_INIT
,
733 "Could not locate an ACPI handle for %s: %s\n",
734 name
, acpi_format_exception(status
));
738 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
740 struct ibm_struct
*ibm
= data
;
742 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
745 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
748 ibm
->acpi
->notify(ibm
, event
);
751 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
758 if (!*ibm
->acpi
->handle
)
761 vdbg_printk(TPACPI_DBG_INIT
,
762 "setting up ACPI notify for %s\n", ibm
->name
);
764 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
766 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm
->name
, rc
);
770 ibm
->acpi
->device
->driver_data
= ibm
;
771 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
772 TPACPI_ACPI_EVENT_PREFIX
,
775 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
776 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
777 if (ACPI_FAILURE(status
)) {
778 if (status
== AE_ALREADY_EXISTS
) {
779 pr_notice("another device driver is already "
780 "handling %s events\n", ibm
->name
);
782 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
783 ibm
->name
, acpi_format_exception(status
));
787 ibm
->flags
.acpi_notify_installed
= 1;
791 static int __init
tpacpi_device_add(struct acpi_device
*device
)
796 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
800 dbg_printk(TPACPI_DBG_INIT
,
801 "registering %s as an ACPI driver\n", ibm
->name
);
805 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
806 if (!ibm
->acpi
->driver
) {
807 pr_err("failed to allocate memory for ibm->acpi->driver\n");
811 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
812 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
814 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
816 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
818 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
820 kfree(ibm
->acpi
->driver
);
821 ibm
->acpi
->driver
= NULL
;
823 ibm
->flags
.acpi_driver_registered
= 1;
829 /****************************************************************************
830 ****************************************************************************
834 ****************************************************************************
835 ****************************************************************************/
837 static int dispatch_proc_show(struct seq_file
*m
, void *v
)
839 struct ibm_struct
*ibm
= m
->private;
841 if (!ibm
|| !ibm
->read
)
846 static int dispatch_proc_open(struct inode
*inode
, struct file
*file
)
848 return single_open(file
, dispatch_proc_show
, PDE(inode
)->data
);
851 static ssize_t
dispatch_proc_write(struct file
*file
,
852 const char __user
*userbuf
,
853 size_t count
, loff_t
*pos
)
855 struct ibm_struct
*ibm
= PDE(file
->f_path
.dentry
->d_inode
)->data
;
859 if (!ibm
|| !ibm
->write
)
861 if (count
> PAGE_SIZE
- 2)
864 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
868 if (copy_from_user(kernbuf
, userbuf
, count
)) {
874 strcat(kernbuf
, ",");
875 ret
= ibm
->write(kernbuf
);
884 static const struct file_operations dispatch_proc_fops
= {
885 .owner
= THIS_MODULE
,
886 .open
= dispatch_proc_open
,
889 .release
= single_release
,
890 .write
= dispatch_proc_write
,
893 static char *next_cmd(char **cmds
)
898 while ((end
= strchr(start
, ',')) && end
== start
)
910 /****************************************************************************
911 ****************************************************************************
913 * Device model: input, hwmon and platform
915 ****************************************************************************
916 ****************************************************************************/
918 static struct platform_device
*tpacpi_pdev
;
919 static struct platform_device
*tpacpi_sensors_pdev
;
920 static struct device
*tpacpi_hwmon
;
921 static struct input_dev
*tpacpi_inputdev
;
922 static struct mutex tpacpi_inputdev_send_mutex
;
923 static LIST_HEAD(tpacpi_all_drivers
);
925 #ifdef CONFIG_PM_SLEEP
926 static int tpacpi_suspend_handler(struct device
*dev
)
928 struct ibm_struct
*ibm
, *itmp
;
930 list_for_each_entry_safe(ibm
, itmp
,
940 static int tpacpi_resume_handler(struct device
*dev
)
942 struct ibm_struct
*ibm
, *itmp
;
944 list_for_each_entry_safe(ibm
, itmp
,
955 static SIMPLE_DEV_PM_OPS(tpacpi_pm
,
956 tpacpi_suspend_handler
, tpacpi_resume_handler
);
958 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
960 struct ibm_struct
*ibm
, *itmp
;
962 list_for_each_entry_safe(ibm
, itmp
,
970 static struct platform_driver tpacpi_pdriver
= {
972 .name
= TPACPI_DRVR_NAME
,
973 .owner
= THIS_MODULE
,
976 .shutdown
= tpacpi_shutdown_handler
,
979 static struct platform_driver tpacpi_hwmon_pdriver
= {
981 .name
= TPACPI_HWMON_DRVR_NAME
,
982 .owner
= THIS_MODULE
,
986 /*************************************************************************
987 * sysfs support helpers
990 struct attribute_set
{
991 unsigned int members
, max_members
;
992 struct attribute_group group
;
995 struct attribute_set_obj
{
996 struct attribute_set s
;
998 } __attribute__((packed
));
1000 static struct attribute_set
*create_attr_set(unsigned int max_members
,
1003 struct attribute_set_obj
*sobj
;
1005 if (max_members
== 0)
1008 /* Allocates space for implicit NULL at the end too */
1009 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
1010 max_members
* sizeof(struct attribute
*),
1014 sobj
->s
.max_members
= max_members
;
1015 sobj
->s
.group
.attrs
= &sobj
->a
;
1016 sobj
->s
.group
.name
= name
;
1021 #define destroy_attr_set(_set) \
1024 /* not multi-threaded safe, use it in a single thread per set */
1025 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
1030 if (s
->members
>= s
->max_members
)
1033 s
->group
.attrs
[s
->members
] = attr
;
1039 static int add_many_to_attr_set(struct attribute_set
*s
,
1040 struct attribute
**attr
,
1045 for (i
= 0; i
< count
; i
++) {
1046 res
= add_to_attr_set(s
, attr
[i
]);
1054 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
1056 sysfs_remove_group(kobj
, &s
->group
);
1057 destroy_attr_set(s
);
1060 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
1061 sysfs_create_group(_kobj, &_attr_set->group)
1063 static int parse_strtoul(const char *buf
,
1064 unsigned long max
, unsigned long *value
)
1068 *value
= simple_strtoul(skip_spaces(buf
), &endp
, 0);
1069 endp
= skip_spaces(endp
);
1070 if (*endp
|| *value
> max
)
1076 static void tpacpi_disable_brightness_delay(void)
1078 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
1079 pr_notice("ACPI backlight control delay disabled\n");
1082 static void printk_deprecated_attribute(const char * const what
,
1083 const char * const details
)
1085 tpacpi_log_usertask("deprecated sysfs attribute");
1086 pr_warn("WARNING: sysfs attribute %s is deprecated and "
1087 "will be removed. %s\n",
1091 /*************************************************************************
1092 * rfkill and radio control support helpers
1096 * ThinkPad-ACPI firmware handling model:
1098 * WLSW (master wireless switch) is event-driven, and is common to all
1099 * firmware-controlled radios. It cannot be controlled, just monitored,
1100 * as expected. It overrides all radio state in firmware
1102 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1103 * (TODO: verify how WLSW interacts with the returned radio state).
1105 * The only time there are shadow radio state changes, is when
1106 * masked-off hotkeys are used.
1110 * Internal driver API for radio state:
1112 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1113 * bool: true means radio blocked (off)
1115 enum tpacpi_rfkill_state
{
1116 TPACPI_RFK_RADIO_OFF
= 0,
1120 /* rfkill switches */
1121 enum tpacpi_rfk_id
{
1122 TPACPI_RFK_BLUETOOTH_SW_ID
= 0,
1123 TPACPI_RFK_WWAN_SW_ID
,
1124 TPACPI_RFK_UWB_SW_ID
,
1128 static const char *tpacpi_rfkill_names
[] = {
1129 [TPACPI_RFK_BLUETOOTH_SW_ID
] = "bluetooth",
1130 [TPACPI_RFK_WWAN_SW_ID
] = "wwan",
1131 [TPACPI_RFK_UWB_SW_ID
] = "uwb",
1132 [TPACPI_RFK_SW_MAX
] = NULL
1135 /* ThinkPad-ACPI rfkill subdriver */
1137 struct rfkill
*rfkill
;
1138 enum tpacpi_rfk_id id
;
1139 const struct tpacpi_rfk_ops
*ops
;
1142 struct tpacpi_rfk_ops
{
1143 /* firmware interface */
1144 int (*get_status
)(void);
1145 int (*set_status
)(const enum tpacpi_rfkill_state
);
1148 static struct tpacpi_rfk
*tpacpi_rfkill_switches
[TPACPI_RFK_SW_MAX
];
1150 /* Query FW and update rfkill sw state for a given rfkill switch */
1151 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk
*tp_rfk
)
1158 status
= (tp_rfk
->ops
->get_status
)();
1162 rfkill_set_sw_state(tp_rfk
->rfkill
,
1163 (status
== TPACPI_RFK_RADIO_OFF
));
1168 /* Query FW and update rfkill sw state for all rfkill switches */
1169 static void tpacpi_rfk_update_swstate_all(void)
1173 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++)
1174 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[i
]);
1178 * Sync the HW-blocking state of all rfkill switches,
1179 * do notice it causes the rfkill core to schedule uevents
1181 static void tpacpi_rfk_update_hwblock_state(bool blocked
)
1184 struct tpacpi_rfk
*tp_rfk
;
1186 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++) {
1187 tp_rfk
= tpacpi_rfkill_switches
[i
];
1189 if (rfkill_set_hw_state(tp_rfk
->rfkill
,
1191 /* ignore -- we track sw block */
1197 /* Call to get the WLSW state from the firmware */
1198 static int hotkey_get_wlsw(void);
1200 /* Call to query WLSW state and update all rfkill switches */
1201 static bool tpacpi_rfk_check_hwblock_state(void)
1203 int res
= hotkey_get_wlsw();
1206 /* When unknown or unsupported, we have to assume it is unblocked */
1210 hw_blocked
= (res
== TPACPI_RFK_RADIO_OFF
);
1211 tpacpi_rfk_update_hwblock_state(hw_blocked
);
1216 static int tpacpi_rfk_hook_set_block(void *data
, bool blocked
)
1218 struct tpacpi_rfk
*tp_rfk
= data
;
1221 dbg_printk(TPACPI_DBG_RFKILL
,
1222 "request to change radio state to %s\n",
1223 blocked
? "blocked" : "unblocked");
1225 /* try to set radio state */
1226 res
= (tp_rfk
->ops
->set_status
)(blocked
?
1227 TPACPI_RFK_RADIO_OFF
: TPACPI_RFK_RADIO_ON
);
1229 /* and update the rfkill core with whatever the FW really did */
1230 tpacpi_rfk_update_swstate(tp_rfk
);
1232 return (res
< 0) ? res
: 0;
1235 static const struct rfkill_ops tpacpi_rfk_rfkill_ops
= {
1236 .set_block
= tpacpi_rfk_hook_set_block
,
1239 static int __init
tpacpi_new_rfkill(const enum tpacpi_rfk_id id
,
1240 const struct tpacpi_rfk_ops
*tp_rfkops
,
1241 const enum rfkill_type rfktype
,
1243 const bool set_default
)
1245 struct tpacpi_rfk
*atp_rfk
;
1247 bool sw_state
= false;
1251 BUG_ON(id
>= TPACPI_RFK_SW_MAX
|| tpacpi_rfkill_switches
[id
]);
1253 atp_rfk
= kzalloc(sizeof(struct tpacpi_rfk
), GFP_KERNEL
);
1255 atp_rfk
->rfkill
= rfkill_alloc(name
,
1258 &tpacpi_rfk_rfkill_ops
,
1260 if (!atp_rfk
|| !atp_rfk
->rfkill
) {
1261 pr_err("failed to allocate memory for rfkill class\n");
1267 atp_rfk
->ops
= tp_rfkops
;
1269 sw_status
= (tp_rfkops
->get_status
)();
1270 if (sw_status
< 0) {
1271 pr_err("failed to read initial state for %s, error %d\n",
1274 sw_state
= (sw_status
== TPACPI_RFK_RADIO_OFF
);
1276 /* try to keep the initial state, since we ask the
1277 * firmware to preserve it across S5 in NVRAM */
1278 rfkill_init_sw_state(atp_rfk
->rfkill
, sw_state
);
1281 hw_state
= tpacpi_rfk_check_hwblock_state();
1282 rfkill_set_hw_state(atp_rfk
->rfkill
, hw_state
);
1284 res
= rfkill_register(atp_rfk
->rfkill
);
1286 pr_err("failed to register %s rfkill switch: %d\n", name
, res
);
1287 rfkill_destroy(atp_rfk
->rfkill
);
1292 tpacpi_rfkill_switches
[id
] = atp_rfk
;
1294 pr_info("rfkill switch %s: radio is %sblocked\n",
1295 name
, (sw_state
|| hw_state
) ? "" : "un");
1299 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id
)
1301 struct tpacpi_rfk
*tp_rfk
;
1303 BUG_ON(id
>= TPACPI_RFK_SW_MAX
);
1305 tp_rfk
= tpacpi_rfkill_switches
[id
];
1307 rfkill_unregister(tp_rfk
->rfkill
);
1308 rfkill_destroy(tp_rfk
->rfkill
);
1309 tpacpi_rfkill_switches
[id
] = NULL
;
1314 static void printk_deprecated_rfkill_attribute(const char * const what
)
1316 printk_deprecated_attribute(what
,
1317 "Please switch to generic rfkill before year 2010");
1320 /* sysfs <radio> enable ------------------------------------------------ */
1321 static ssize_t
tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id
,
1322 struct device_attribute
*attr
,
1327 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1329 /* This is in the ABI... */
1330 if (tpacpi_rfk_check_hwblock_state()) {
1331 status
= TPACPI_RFK_RADIO_OFF
;
1333 status
= tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1338 return snprintf(buf
, PAGE_SIZE
, "%d\n",
1339 (status
== TPACPI_RFK_RADIO_ON
) ? 1 : 0);
1342 static ssize_t
tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id
,
1343 struct device_attribute
*attr
,
1344 const char *buf
, size_t count
)
1349 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1351 if (parse_strtoul(buf
, 1, &t
))
1354 tpacpi_disclose_usertask(attr
->attr
.name
, "set to %ld\n", t
);
1356 /* This is in the ABI... */
1357 if (tpacpi_rfk_check_hwblock_state() && !!t
)
1360 res
= tpacpi_rfkill_switches
[id
]->ops
->set_status((!!t
) ?
1361 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
);
1362 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1364 return (res
< 0) ? res
: count
;
1367 /* procfs -------------------------------------------------------------- */
1368 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id
, struct seq_file
*m
)
1370 if (id
>= TPACPI_RFK_SW_MAX
)
1371 seq_printf(m
, "status:\t\tnot supported\n");
1375 /* This is in the ABI... */
1376 if (tpacpi_rfk_check_hwblock_state()) {
1377 status
= TPACPI_RFK_RADIO_OFF
;
1379 status
= tpacpi_rfk_update_swstate(
1380 tpacpi_rfkill_switches
[id
]);
1385 seq_printf(m
, "status:\t\t%s\n",
1386 (status
== TPACPI_RFK_RADIO_ON
) ?
1387 "enabled" : "disabled");
1388 seq_printf(m
, "commands:\tenable, disable\n");
1394 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id
, char *buf
)
1400 if (id
>= TPACPI_RFK_SW_MAX
)
1403 while ((cmd
= next_cmd(&buf
))) {
1404 if (strlencmp(cmd
, "enable") == 0)
1405 status
= TPACPI_RFK_RADIO_ON
;
1406 else if (strlencmp(cmd
, "disable") == 0)
1407 status
= TPACPI_RFK_RADIO_OFF
;
1413 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1414 (status
== TPACPI_RFK_RADIO_ON
) ?
1415 "enable" : "disable",
1416 tpacpi_rfkill_names
[id
]);
1417 res
= (tpacpi_rfkill_switches
[id
]->ops
->set_status
)(status
);
1418 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1424 /*************************************************************************
1425 * thinkpad-acpi driver attributes
1428 /* interface_version --------------------------------------------------- */
1429 static ssize_t
tpacpi_driver_interface_version_show(
1430 struct device_driver
*drv
,
1433 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1436 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1437 tpacpi_driver_interface_version_show
, NULL
);
1439 /* debug_level --------------------------------------------------------- */
1440 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1443 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1446 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1447 const char *buf
, size_t count
)
1451 if (parse_strtoul(buf
, 0xffff, &t
))
1459 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1460 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1462 /* version ------------------------------------------------------------- */
1463 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1466 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1467 TPACPI_DESC
, TPACPI_VERSION
);
1470 static DRIVER_ATTR(version
, S_IRUGO
,
1471 tpacpi_driver_version_show
, NULL
);
1473 /* --------------------------------------------------------------------- */
1475 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1477 /* wlsw_emulstate ------------------------------------------------------ */
1478 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1481 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1484 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1485 const char *buf
, size_t count
)
1489 if (parse_strtoul(buf
, 1, &t
))
1492 if (tpacpi_wlsw_emulstate
!= !!t
) {
1493 tpacpi_wlsw_emulstate
= !!t
;
1494 tpacpi_rfk_update_hwblock_state(!t
); /* negative logic */
1500 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1501 tpacpi_driver_wlsw_emulstate_show
,
1502 tpacpi_driver_wlsw_emulstate_store
);
1504 /* bluetooth_emulstate ------------------------------------------------- */
1505 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1506 struct device_driver
*drv
,
1509 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1512 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1513 struct device_driver
*drv
,
1514 const char *buf
, size_t count
)
1518 if (parse_strtoul(buf
, 1, &t
))
1521 tpacpi_bluetooth_emulstate
= !!t
;
1526 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1527 tpacpi_driver_bluetooth_emulstate_show
,
1528 tpacpi_driver_bluetooth_emulstate_store
);
1530 /* wwan_emulstate ------------------------------------------------- */
1531 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1532 struct device_driver
*drv
,
1535 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1538 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1539 struct device_driver
*drv
,
1540 const char *buf
, size_t count
)
1544 if (parse_strtoul(buf
, 1, &t
))
1547 tpacpi_wwan_emulstate
= !!t
;
1552 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1553 tpacpi_driver_wwan_emulstate_show
,
1554 tpacpi_driver_wwan_emulstate_store
);
1556 /* uwb_emulstate ------------------------------------------------- */
1557 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1558 struct device_driver
*drv
,
1561 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1564 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1565 struct device_driver
*drv
,
1566 const char *buf
, size_t count
)
1570 if (parse_strtoul(buf
, 1, &t
))
1573 tpacpi_uwb_emulstate
= !!t
;
1578 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1579 tpacpi_driver_uwb_emulstate_show
,
1580 tpacpi_driver_uwb_emulstate_store
);
1583 /* --------------------------------------------------------------------- */
1585 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1586 &driver_attr_debug_level
, &driver_attr_version
,
1587 &driver_attr_interface_version
,
1590 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1596 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1597 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1601 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1602 if (!res
&& dbg_wlswemul
)
1603 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1604 if (!res
&& dbg_bluetoothemul
)
1605 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1606 if (!res
&& dbg_wwanemul
)
1607 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1608 if (!res
&& dbg_uwbemul
)
1609 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1615 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1619 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1620 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1622 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1623 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1624 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1625 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1626 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1630 /*************************************************************************
1635 * Table of recommended minimum BIOS versions
1637 * Reasons for listing:
1638 * 1. Stable BIOS, listed because the unknown amount of
1639 * bugs and bad ACPI behaviour on older versions
1641 * 2. BIOS or EC fw with known bugs that trigger on Linux
1643 * 3. BIOS with known reduced functionality in older versions
1645 * We recommend the latest BIOS and EC version.
1646 * We only support the latest BIOS and EC fw version as a rule.
1648 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1649 * Information from users in ThinkWiki
1651 * WARNING: we use this table also to detect that the machine is
1652 * a ThinkPad in some cases, so don't remove entries lightly.
1655 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1656 { .vendor = (__v), \
1657 .bios = TPID(__id1, __id2), \
1658 .ec = TPACPI_MATCH_ANY, \
1659 .quirks = TPACPI_MATCH_ANY << 16 \
1660 | (__bv1) << 8 | (__bv2) }
1662 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1663 __eid, __ev1, __ev2) \
1664 { .vendor = (__v), \
1665 .bios = TPID(__bid1, __bid2), \
1667 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1668 | (__bv1) << 8 | (__bv2) }
1670 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1671 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1673 /* Outdated IBM BIOSes often lack the EC id string */
1674 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1675 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1676 __bv1, __bv2, TPID(__id1, __id2), \
1678 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1679 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1682 /* Outdated IBM BIOSes often lack the EC id string */
1683 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1684 __eid1, __eid2, __ev1, __ev2) \
1685 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1686 __bv1, __bv2, TPID(__eid1, __eid2), \
1688 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1689 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1692 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1693 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1695 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1696 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1697 __bv1, __bv2, TPID(__id1, __id2), \
1700 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1701 __eid1, __eid2, __ev1, __ev2) \
1702 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1703 __bv1, __bv2, TPID(__eid1, __eid2), \
1706 static const struct tpacpi_quirk tpacpi_bios_version_qtable
[] __initconst
= {
1707 /* Numeric models ------------------ */
1708 /* FW MODEL BIOS VERS */
1709 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1710 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1711 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1712 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1713 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1714 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1715 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1716 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1717 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1719 /* A-series ------------------------- */
1720 /* FW MODEL BIOS VERS EC VERS */
1721 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1722 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1723 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1724 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1725 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1726 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1727 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1728 TPV_QI0('1', '3', '2', '0'), /* A22m */
1729 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1730 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1731 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1733 /* G-series ------------------------- */
1734 /* FW MODEL BIOS VERS */
1735 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1736 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1738 /* R-series, T-series --------------- */
1739 /* FW MODEL BIOS VERS EC VERS */
1740 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1741 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1742 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1743 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1744 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1745 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1746 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1747 T40/p, T41/p, T42/p (1) */
1748 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1749 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1750 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1751 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1753 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1754 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1755 TPV_QI0('1', '6', '3', '2'), /* T22 */
1756 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1757 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1758 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1760 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1761 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1762 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
1764 /* BIOS FW BIOS VERS EC FW EC VERS */
1765 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1766 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1768 /* X-series ------------------------- */
1769 /* FW MODEL BIOS VERS EC VERS */
1770 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1771 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1772 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1773 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1774 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1775 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1776 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1778 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1779 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
1781 /* (0) - older versions lack DMI EC fw string and functionality */
1782 /* (1) - older versions known to lack functionality */
1793 static void __init
tpacpi_check_outdated_fw(void)
1795 unsigned long fwvers
;
1796 u16 ec_version
, bios_version
;
1798 fwvers
= tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1799 ARRAY_SIZE(tpacpi_bios_version_qtable
));
1804 bios_version
= fwvers
& 0xffffU
;
1805 ec_version
= (fwvers
>> 16) & 0xffffU
;
1807 /* note that unknown versions are set to 0x0000 and we use that */
1808 if ((bios_version
> thinkpad_id
.bios_release
) ||
1809 (ec_version
> thinkpad_id
.ec_release
&&
1810 ec_version
!= TPACPI_MATCH_ANY
)) {
1812 * The changelogs would let us track down the exact
1813 * reason, but it is just too much of a pain to track
1814 * it. We only list BIOSes that are either really
1815 * broken, or really stable to begin with, so it is
1816 * best if the user upgrades the firmware anyway.
1818 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1819 pr_warn("WARNING: This firmware may be missing critical bug "
1820 "fixes and/or important features\n");
1824 static bool __init
tpacpi_is_fw_known(void)
1826 return tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1827 ARRAY_SIZE(tpacpi_bios_version_qtable
)) != 0;
1830 /****************************************************************************
1831 ****************************************************************************
1835 ****************************************************************************
1836 ****************************************************************************/
1838 /*************************************************************************
1839 * thinkpad-acpi metadata subdriver
1842 static int thinkpad_acpi_driver_read(struct seq_file
*m
)
1844 seq_printf(m
, "driver:\t\t%s\n", TPACPI_DESC
);
1845 seq_printf(m
, "version:\t%s\n", TPACPI_VERSION
);
1849 static struct ibm_struct thinkpad_acpi_driver_data
= {
1851 .read
= thinkpad_acpi_driver_read
,
1854 /*************************************************************************
1859 * ThinkPad firmware event model
1861 * The ThinkPad firmware has two main event interfaces: normal ACPI
1862 * notifications (which follow the ACPI standard), and a private event
1865 * The private event interface also issues events for the hotkeys. As
1866 * the driver gained features, the event handling code ended up being
1867 * built around the hotkey subdriver. This will need to be refactored
1868 * to a more formal event API eventually.
1870 * Some "hotkeys" are actually supposed to be used as event reports,
1871 * such as "brightness has changed", "volume has changed", depending on
1872 * the ThinkPad model and how the firmware is operating.
1874 * Unlike other classes, hotkey-class events have mask/unmask control on
1875 * non-ancient firmware. However, how it behaves changes a lot with the
1876 * firmware model and version.
1879 enum { /* hot key scan codes (derived from ACPI DSDT) */
1880 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1881 TP_ACPI_HOTKEYSCAN_FNF2
,
1882 TP_ACPI_HOTKEYSCAN_FNF3
,
1883 TP_ACPI_HOTKEYSCAN_FNF4
,
1884 TP_ACPI_HOTKEYSCAN_FNF5
,
1885 TP_ACPI_HOTKEYSCAN_FNF6
,
1886 TP_ACPI_HOTKEYSCAN_FNF7
,
1887 TP_ACPI_HOTKEYSCAN_FNF8
,
1888 TP_ACPI_HOTKEYSCAN_FNF9
,
1889 TP_ACPI_HOTKEYSCAN_FNF10
,
1890 TP_ACPI_HOTKEYSCAN_FNF11
,
1891 TP_ACPI_HOTKEYSCAN_FNF12
,
1892 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1893 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1894 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1895 TP_ACPI_HOTKEYSCAN_FNHOME
,
1896 TP_ACPI_HOTKEYSCAN_FNEND
,
1897 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1898 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1899 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1900 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1901 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1902 TP_ACPI_HOTKEYSCAN_MUTE
,
1903 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1904 TP_ACPI_HOTKEYSCAN_UNK1
,
1905 TP_ACPI_HOTKEYSCAN_UNK2
,
1906 TP_ACPI_HOTKEYSCAN_UNK3
,
1907 TP_ACPI_HOTKEYSCAN_UNK4
,
1908 TP_ACPI_HOTKEYSCAN_UNK5
,
1909 TP_ACPI_HOTKEYSCAN_UNK6
,
1910 TP_ACPI_HOTKEYSCAN_UNK7
,
1911 TP_ACPI_HOTKEYSCAN_UNK8
,
1913 /* Hotkey keymap size */
1914 TPACPI_HOTKEY_MAP_LEN
1917 enum { /* Keys/events available through NVRAM polling */
1918 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1919 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1922 enum { /* Positions of some of the keys in hotkey masks */
1923 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1924 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1925 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1926 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1927 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1928 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1929 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1930 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1931 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1932 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1933 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1936 enum { /* NVRAM to ACPI HKEY group map */
1937 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1938 TP_ACPI_HKEY_ZOOM_MASK
|
1939 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1940 TP_ACPI_HKEY_HIBERNATE_MASK
,
1941 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1942 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1943 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1944 TP_ACPI_HKEY_VOLDWN_MASK
|
1945 TP_ACPI_HKEY_MUTE_MASK
,
1948 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1949 struct tp_nvram_state
{
1950 u16 thinkpad_toggle
:1;
1952 u16 display_toggle
:1;
1953 u16 thinklight_toggle
:1;
1954 u16 hibernate_toggle
:1;
1955 u16 displayexp_toggle
:1;
1956 u16 display_state
:1;
1957 u16 brightness_toggle
:1;
1958 u16 volume_toggle
:1;
1961 u8 brightness_level
;
1965 /* kthread for the hotkey poller */
1966 static struct task_struct
*tpacpi_hotkey_task
;
1968 /* Acquired while the poller kthread is running, use to sync start/stop */
1969 static struct mutex hotkey_thread_mutex
;
1972 * Acquire mutex to write poller control variables as an
1975 * Increment hotkey_config_change when changing them if you
1976 * want the kthread to forget old state.
1978 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1980 static struct mutex hotkey_thread_data_mutex
;
1981 static unsigned int hotkey_config_change
;
1984 * hotkey poller control variables
1986 * Must be atomic or readers will also need to acquire mutex
1988 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1989 * should be used only when the changes need to be taken as
1990 * a block, OR when one needs to force the kthread to forget
1993 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
1994 static unsigned int hotkey_poll_freq
= 10; /* Hz */
1996 #define HOTKEY_CONFIG_CRITICAL_START \
1998 mutex_lock(&hotkey_thread_data_mutex); \
1999 hotkey_config_change++; \
2001 #define HOTKEY_CONFIG_CRITICAL_END \
2002 mutex_unlock(&hotkey_thread_data_mutex);
2004 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2006 #define hotkey_source_mask 0U
2007 #define HOTKEY_CONFIG_CRITICAL_START
2008 #define HOTKEY_CONFIG_CRITICAL_END
2010 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2012 static struct mutex hotkey_mutex
;
2014 static enum { /* Reasons for waking up */
2015 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
2016 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
2017 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
2018 } hotkey_wakeup_reason
;
2020 static int hotkey_autosleep_ack
;
2022 static u32 hotkey_orig_mask
; /* events the BIOS had enabled */
2023 static u32 hotkey_all_mask
; /* all events supported in fw */
2024 static u32 hotkey_reserved_mask
; /* events better left disabled */
2025 static u32 hotkey_driver_mask
; /* events needed by the driver */
2026 static u32 hotkey_user_mask
; /* events visible to userspace */
2027 static u32 hotkey_acpi_mask
; /* events enabled in firmware */
2029 static unsigned int hotkey_report_mode
;
2031 static u16
*hotkey_keycode_map
;
2033 static struct attribute_set
*hotkey_dev_attributes
;
2035 static void tpacpi_driver_event(const unsigned int hkey_event
);
2036 static void hotkey_driver_event(const unsigned int scancode
);
2037 static void hotkey_poll_setup(const bool may_warn
);
2039 /* HKEY.MHKG() return bits */
2040 #define TP_HOTKEY_TABLET_MASK (1 << 3)
2042 static int hotkey_get_wlsw(void)
2046 if (!tp_features
.hotkey_wlsw
)
2049 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2051 return (tpacpi_wlsw_emulstate
) ?
2052 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2055 if (!acpi_evalf(hkey_handle
, &status
, "WLSW", "d"))
2058 return (status
) ? TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2061 static int hotkey_get_tablet_mode(int *status
)
2065 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
2068 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
2073 * Reads current event mask from firmware, and updates
2074 * hotkey_acpi_mask accordingly. Also resets any bits
2075 * from hotkey_user_mask that are unavailable to be
2076 * delivered (shadow requirement of the userspace ABI).
2078 * Call with hotkey_mutex held
2080 static int hotkey_mask_get(void)
2082 if (tp_features
.hotkey_mask
) {
2085 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
2088 hotkey_acpi_mask
= m
;
2090 /* no mask support doesn't mean no event support... */
2091 hotkey_acpi_mask
= hotkey_all_mask
;
2094 /* sync userspace-visible mask */
2095 hotkey_user_mask
&= (hotkey_acpi_mask
| hotkey_source_mask
);
2100 void static hotkey_mask_warn_incomplete_mask(void)
2102 /* log only what the user can fix... */
2103 const u32 wantedmask
= hotkey_driver_mask
&
2104 ~(hotkey_acpi_mask
| hotkey_source_mask
) &
2105 (hotkey_all_mask
| TPACPI_HKEY_NVRAM_KNOWN_MASK
);
2108 pr_notice("required events 0x%08x not enabled!\n", wantedmask
);
2112 * Set the firmware mask when supported
2114 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2116 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2118 * Call with hotkey_mutex held
2120 static int hotkey_mask_set(u32 mask
)
2125 const u32 fwmask
= mask
& ~hotkey_source_mask
;
2127 if (tp_features
.hotkey_mask
) {
2128 for (i
= 0; i
< 32; i
++) {
2129 if (!acpi_evalf(hkey_handle
,
2130 NULL
, "MHKM", "vdd", i
+ 1,
2131 !!(mask
& (1 << i
)))) {
2139 * We *must* make an inconditional call to hotkey_mask_get to
2140 * refresh hotkey_acpi_mask and update hotkey_user_mask
2142 * Take the opportunity to also log when we cannot _enable_
2145 if (!hotkey_mask_get() && !rc
&& (fwmask
& ~hotkey_acpi_mask
)) {
2146 pr_notice("asked for hotkey mask 0x%08x, but "
2147 "firmware forced it to 0x%08x\n",
2148 fwmask
, hotkey_acpi_mask
);
2151 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
)
2152 hotkey_mask_warn_incomplete_mask();
2158 * Sets hotkey_user_mask and tries to set the firmware mask
2160 * Call with hotkey_mutex held
2162 static int hotkey_user_mask_set(const u32 mask
)
2166 /* Give people a chance to notice they are doing something that
2167 * is bound to go boom on their users sooner or later */
2168 if (!tp_warned
.hotkey_mask_ff
&&
2169 (mask
== 0xffff || mask
== 0xffffff ||
2170 mask
== 0xffffffff)) {
2171 tp_warned
.hotkey_mask_ff
= 1;
2172 pr_notice("setting the hotkey mask to 0x%08x is likely "
2173 "not the best way to go about it\n", mask
);
2174 pr_notice("please consider using the driver defaults, "
2175 "and refer to up-to-date thinkpad-acpi "
2179 /* Try to enable what the user asked for, plus whatever we need.
2180 * this syncs everything but won't enable bits in hotkey_user_mask */
2181 rc
= hotkey_mask_set((mask
| hotkey_driver_mask
) & ~hotkey_source_mask
);
2183 /* Enable the available bits in hotkey_user_mask */
2184 hotkey_user_mask
= mask
& (hotkey_acpi_mask
| hotkey_source_mask
);
2190 * Sets the driver hotkey mask.
2192 * Can be called even if the hotkey subdriver is inactive
2194 static int tpacpi_hotkey_driver_mask_set(const u32 mask
)
2198 /* Do the right thing if hotkey_init has not been called yet */
2199 if (!tp_features
.hotkey
) {
2200 hotkey_driver_mask
= mask
;
2204 mutex_lock(&hotkey_mutex
);
2206 HOTKEY_CONFIG_CRITICAL_START
2207 hotkey_driver_mask
= mask
;
2208 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2209 hotkey_source_mask
|= (mask
& ~hotkey_all_mask
);
2211 HOTKEY_CONFIG_CRITICAL_END
2213 rc
= hotkey_mask_set((hotkey_acpi_mask
| hotkey_driver_mask
) &
2214 ~hotkey_source_mask
);
2215 hotkey_poll_setup(true);
2217 mutex_unlock(&hotkey_mutex
);
2222 static int hotkey_status_get(int *status
)
2224 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
2230 static int hotkey_status_set(bool enable
)
2232 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", enable
? 1 : 0))
2238 static void tpacpi_input_send_tabletsw(void)
2242 if (tp_features
.hotkey_tablet
&&
2243 !hotkey_get_tablet_mode(&state
)) {
2244 mutex_lock(&tpacpi_inputdev_send_mutex
);
2246 input_report_switch(tpacpi_inputdev
,
2247 SW_TABLET_MODE
, !!state
);
2248 input_sync(tpacpi_inputdev
);
2250 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2254 /* Do NOT call without validating scancode first */
2255 static void tpacpi_input_send_key(const unsigned int scancode
)
2257 const unsigned int keycode
= hotkey_keycode_map
[scancode
];
2259 if (keycode
!= KEY_RESERVED
) {
2260 mutex_lock(&tpacpi_inputdev_send_mutex
);
2262 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
, scancode
);
2263 input_report_key(tpacpi_inputdev
, keycode
, 1);
2264 input_sync(tpacpi_inputdev
);
2266 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
, scancode
);
2267 input_report_key(tpacpi_inputdev
, keycode
, 0);
2268 input_sync(tpacpi_inputdev
);
2270 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2274 /* Do NOT call without validating scancode first */
2275 static void tpacpi_input_send_key_masked(const unsigned int scancode
)
2277 hotkey_driver_event(scancode
);
2278 if (hotkey_user_mask
& (1 << scancode
))
2279 tpacpi_input_send_key(scancode
);
2282 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2283 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
2285 /* Do NOT call without validating scancode first */
2286 static void tpacpi_hotkey_send_key(unsigned int scancode
)
2288 tpacpi_input_send_key_masked(scancode
);
2289 if (hotkey_report_mode
< 2) {
2290 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
2291 0x80, TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
2295 static void hotkey_read_nvram(struct tp_nvram_state
*n
, const u32 m
)
2299 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
2300 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
2301 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
2302 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
2303 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
2304 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
2306 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
2307 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
2308 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
2310 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
2311 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
2312 n
->displayexp_toggle
=
2313 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
2315 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
2316 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
2317 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
2318 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
2319 n
->brightness_toggle
=
2320 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
2322 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
2323 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
2324 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
2325 >> TP_NVRAM_POS_LEVEL_VOLUME
;
2326 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
2327 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
2331 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
2332 struct tp_nvram_state
*newn
,
2333 const u32 event_mask
)
2336 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2338 if ((event_mask & (1 << __scancode)) && \
2339 oldn->__member != newn->__member) \
2340 tpacpi_hotkey_send_key(__scancode); \
2343 #define TPACPI_MAY_SEND_KEY(__scancode) \
2345 if (event_mask & (1 << __scancode)) \
2346 tpacpi_hotkey_send_key(__scancode); \
2349 void issue_volchange(const unsigned int oldvol
,
2350 const unsigned int newvol
)
2352 unsigned int i
= oldvol
;
2354 while (i
> newvol
) {
2355 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2358 while (i
< newvol
) {
2359 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2364 void issue_brightnesschange(const unsigned int oldbrt
,
2365 const unsigned int newbrt
)
2367 unsigned int i
= oldbrt
;
2369 while (i
> newbrt
) {
2370 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2373 while (i
< newbrt
) {
2374 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2379 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
2380 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
2381 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
2382 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
2384 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
2386 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
2391 * This code is supposed to duplicate the IBM firmware behaviour:
2392 * - Pressing MUTE issues mute hotkey message, even when already mute
2393 * - Pressing Volume up/down issues volume up/down hotkey messages,
2394 * even when already at maximum or minimum volume
2395 * - The act of unmuting issues volume up/down notification,
2396 * depending which key was used to unmute
2398 * We are constrained to what the NVRAM can tell us, which is not much
2399 * and certainly not enough if more than one volume hotkey was pressed
2400 * since the last poll cycle.
2402 * Just to make our life interesting, some newer Lenovo ThinkPads have
2403 * bugs in the BIOS and may fail to update volume_toggle properly.
2408 oldn
->volume_toggle
!= newn
->volume_toggle
||
2409 oldn
->volume_level
!= newn
->volume_level
) {
2410 /* recently muted, or repeated mute keypress, or
2411 * multiple presses ending in mute */
2412 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2413 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2418 /* recently unmuted, issue 'unmute' keypress */
2419 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2421 if (oldn
->volume_level
!= newn
->volume_level
) {
2422 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2423 } else if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
2424 /* repeated vol up/down keypress at end of scale ? */
2425 if (newn
->volume_level
== 0)
2426 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2427 else if (newn
->volume_level
>= TP_NVRAM_LEVEL_VOLUME_MAX
)
2428 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2432 /* handle brightness */
2433 if (oldn
->brightness_level
!= newn
->brightness_level
) {
2434 issue_brightnesschange(oldn
->brightness_level
,
2435 newn
->brightness_level
);
2436 } else if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
2437 /* repeated key presses that didn't change state */
2438 if (newn
->brightness_level
== 0)
2439 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2440 else if (newn
->brightness_level
>= bright_maxlvl
2441 && !tp_features
.bright_unkfw
)
2442 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2445 #undef TPACPI_COMPARE_KEY
2446 #undef TPACPI_MAY_SEND_KEY
2452 * We track all events in hotkey_source_mask all the time, since
2453 * most of them are edge-based. We only issue those requested by
2454 * hotkey_user_mask or hotkey_driver_mask, though.
2456 static int hotkey_kthread(void *data
)
2458 struct tp_nvram_state s
[2];
2459 u32 poll_mask
, event_mask
;
2460 unsigned int si
, so
;
2462 unsigned int change_detector
;
2463 unsigned int poll_freq
;
2466 mutex_lock(&hotkey_thread_mutex
);
2468 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
2477 /* Initial state for compares */
2478 mutex_lock(&hotkey_thread_data_mutex
);
2479 change_detector
= hotkey_config_change
;
2480 poll_mask
= hotkey_source_mask
;
2481 event_mask
= hotkey_source_mask
&
2482 (hotkey_driver_mask
| hotkey_user_mask
);
2483 poll_freq
= hotkey_poll_freq
;
2484 mutex_unlock(&hotkey_thread_data_mutex
);
2485 hotkey_read_nvram(&s
[so
], poll_mask
);
2487 while (!kthread_should_stop()) {
2489 if (likely(poll_freq
))
2492 t
= 100; /* should never happen... */
2494 t
= msleep_interruptible(t
);
2495 if (unlikely(kthread_freezable_should_stop(&was_frozen
)))
2498 if (t
> 0 && !was_frozen
)
2501 mutex_lock(&hotkey_thread_data_mutex
);
2502 if (was_frozen
|| hotkey_config_change
!= change_detector
) {
2503 /* forget old state on thaw or config change */
2506 change_detector
= hotkey_config_change
;
2508 poll_mask
= hotkey_source_mask
;
2509 event_mask
= hotkey_source_mask
&
2510 (hotkey_driver_mask
| hotkey_user_mask
);
2511 poll_freq
= hotkey_poll_freq
;
2512 mutex_unlock(&hotkey_thread_data_mutex
);
2514 if (likely(poll_mask
)) {
2515 hotkey_read_nvram(&s
[si
], poll_mask
);
2516 if (likely(si
!= so
)) {
2517 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
2527 mutex_unlock(&hotkey_thread_mutex
);
2531 /* call with hotkey_mutex held */
2532 static void hotkey_poll_stop_sync(void)
2534 if (tpacpi_hotkey_task
) {
2535 kthread_stop(tpacpi_hotkey_task
);
2536 tpacpi_hotkey_task
= NULL
;
2537 mutex_lock(&hotkey_thread_mutex
);
2538 /* at this point, the thread did exit */
2539 mutex_unlock(&hotkey_thread_mutex
);
2543 /* call with hotkey_mutex held */
2544 static void hotkey_poll_setup(const bool may_warn
)
2546 const u32 poll_driver_mask
= hotkey_driver_mask
& hotkey_source_mask
;
2547 const u32 poll_user_mask
= hotkey_user_mask
& hotkey_source_mask
;
2549 if (hotkey_poll_freq
> 0 &&
2550 (poll_driver_mask
||
2551 (poll_user_mask
&& tpacpi_inputdev
->users
> 0))) {
2552 if (!tpacpi_hotkey_task
) {
2553 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
2554 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
2555 if (IS_ERR(tpacpi_hotkey_task
)) {
2556 tpacpi_hotkey_task
= NULL
;
2557 pr_err("could not create kernel thread "
2558 "for hotkey polling\n");
2562 hotkey_poll_stop_sync();
2563 if (may_warn
&& (poll_driver_mask
|| poll_user_mask
) &&
2564 hotkey_poll_freq
== 0) {
2565 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2566 "require polling, which is currently "
2568 poll_user_mask
, poll_driver_mask
);
2573 static void hotkey_poll_setup_safe(const bool may_warn
)
2575 mutex_lock(&hotkey_mutex
);
2576 hotkey_poll_setup(may_warn
);
2577 mutex_unlock(&hotkey_mutex
);
2580 /* call with hotkey_mutex held */
2581 static void hotkey_poll_set_freq(unsigned int freq
)
2584 hotkey_poll_stop_sync();
2586 hotkey_poll_freq
= freq
;
2589 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2591 static void hotkey_poll_setup(const bool __unused
)
2595 static void hotkey_poll_setup_safe(const bool __unused
)
2599 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2601 static int hotkey_inputdev_open(struct input_dev
*dev
)
2603 switch (tpacpi_lifecycle
) {
2604 case TPACPI_LIFE_INIT
:
2605 case TPACPI_LIFE_RUNNING
:
2606 hotkey_poll_setup_safe(false);
2608 case TPACPI_LIFE_EXITING
:
2612 /* Should only happen if tpacpi_lifecycle is corrupt */
2617 static void hotkey_inputdev_close(struct input_dev
*dev
)
2619 /* disable hotkey polling when possible */
2620 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
&&
2621 !(hotkey_source_mask
& hotkey_driver_mask
))
2622 hotkey_poll_setup_safe(false);
2625 /* sysfs hotkey enable ------------------------------------------------- */
2626 static ssize_t
hotkey_enable_show(struct device
*dev
,
2627 struct device_attribute
*attr
,
2632 printk_deprecated_attribute("hotkey_enable",
2633 "Hotkey reporting is always enabled");
2635 res
= hotkey_status_get(&status
);
2639 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
2642 static ssize_t
hotkey_enable_store(struct device
*dev
,
2643 struct device_attribute
*attr
,
2644 const char *buf
, size_t count
)
2648 printk_deprecated_attribute("hotkey_enable",
2649 "Hotkeys can be disabled through hotkey_mask");
2651 if (parse_strtoul(buf
, 1, &t
))
2660 static struct device_attribute dev_attr_hotkey_enable
=
2661 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
2662 hotkey_enable_show
, hotkey_enable_store
);
2664 /* sysfs hotkey mask --------------------------------------------------- */
2665 static ssize_t
hotkey_mask_show(struct device
*dev
,
2666 struct device_attribute
*attr
,
2669 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_user_mask
);
2672 static ssize_t
hotkey_mask_store(struct device
*dev
,
2673 struct device_attribute
*attr
,
2674 const char *buf
, size_t count
)
2679 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
2682 if (mutex_lock_killable(&hotkey_mutex
))
2683 return -ERESTARTSYS
;
2685 res
= hotkey_user_mask_set(t
);
2687 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2688 hotkey_poll_setup(true);
2691 mutex_unlock(&hotkey_mutex
);
2693 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t
);
2695 return (res
) ? res
: count
;
2698 static struct device_attribute dev_attr_hotkey_mask
=
2699 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
2700 hotkey_mask_show
, hotkey_mask_store
);
2702 /* sysfs hotkey bios_enabled ------------------------------------------- */
2703 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
2704 struct device_attribute
*attr
,
2707 return sprintf(buf
, "0\n");
2710 static struct device_attribute dev_attr_hotkey_bios_enabled
=
2711 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
2713 /* sysfs hotkey bios_mask ---------------------------------------------- */
2714 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
2715 struct device_attribute
*attr
,
2718 printk_deprecated_attribute("hotkey_bios_mask",
2719 "This attribute is useless.");
2720 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
2723 static struct device_attribute dev_attr_hotkey_bios_mask
=
2724 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
2726 /* sysfs hotkey all_mask ----------------------------------------------- */
2727 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
2728 struct device_attribute
*attr
,
2731 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2732 hotkey_all_mask
| hotkey_source_mask
);
2735 static struct device_attribute dev_attr_hotkey_all_mask
=
2736 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
2738 /* sysfs hotkey recommended_mask --------------------------------------- */
2739 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
2740 struct device_attribute
*attr
,
2743 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2744 (hotkey_all_mask
| hotkey_source_mask
)
2745 & ~hotkey_reserved_mask
);
2748 static struct device_attribute dev_attr_hotkey_recommended_mask
=
2749 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
2750 hotkey_recommended_mask_show
, NULL
);
2752 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2754 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2755 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
2756 struct device_attribute
*attr
,
2759 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
2762 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
2763 struct device_attribute
*attr
,
2764 const char *buf
, size_t count
)
2770 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
2771 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
2774 if (mutex_lock_killable(&hotkey_mutex
))
2775 return -ERESTARTSYS
;
2777 HOTKEY_CONFIG_CRITICAL_START
2778 hotkey_source_mask
= t
;
2779 HOTKEY_CONFIG_CRITICAL_END
2781 rc
= hotkey_mask_set((hotkey_user_mask
| hotkey_driver_mask
) &
2782 ~hotkey_source_mask
);
2783 hotkey_poll_setup(true);
2785 /* check if events needed by the driver got disabled */
2786 r_ev
= hotkey_driver_mask
& ~(hotkey_acpi_mask
& hotkey_all_mask
)
2787 & ~hotkey_source_mask
& TPACPI_HKEY_NVRAM_KNOWN_MASK
;
2789 mutex_unlock(&hotkey_mutex
);
2792 pr_err("hotkey_source_mask: "
2793 "failed to update the firmware event mask!\n");
2796 pr_notice("hotkey_source_mask: "
2797 "some important events were disabled: 0x%04x\n",
2800 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t
);
2802 return (rc
< 0) ? rc
: count
;
2805 static struct device_attribute dev_attr_hotkey_source_mask
=
2806 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2807 hotkey_source_mask_show
, hotkey_source_mask_store
);
2809 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2810 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2811 struct device_attribute
*attr
,
2814 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2817 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2818 struct device_attribute
*attr
,
2819 const char *buf
, size_t count
)
2823 if (parse_strtoul(buf
, 25, &t
))
2826 if (mutex_lock_killable(&hotkey_mutex
))
2827 return -ERESTARTSYS
;
2829 hotkey_poll_set_freq(t
);
2830 hotkey_poll_setup(true);
2832 mutex_unlock(&hotkey_mutex
);
2834 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t
);
2839 static struct device_attribute dev_attr_hotkey_poll_freq
=
2840 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2841 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2843 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2845 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2846 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2847 struct device_attribute
*attr
,
2851 res
= hotkey_get_wlsw();
2855 /* Opportunistic update */
2856 tpacpi_rfk_update_hwblock_state((res
== TPACPI_RFK_RADIO_OFF
));
2858 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2859 (res
== TPACPI_RFK_RADIO_OFF
) ? 0 : 1);
2862 static struct device_attribute dev_attr_hotkey_radio_sw
=
2863 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2865 static void hotkey_radio_sw_notify_change(void)
2867 if (tp_features
.hotkey_wlsw
)
2868 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2872 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2873 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2874 struct device_attribute
*attr
,
2878 res
= hotkey_get_tablet_mode(&s
);
2882 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2885 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2886 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2888 static void hotkey_tablet_mode_notify_change(void)
2890 if (tp_features
.hotkey_tablet
)
2891 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2892 "hotkey_tablet_mode");
2895 /* sysfs hotkey report_mode -------------------------------------------- */
2896 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2897 struct device_attribute
*attr
,
2900 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2901 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2904 static struct device_attribute dev_attr_hotkey_report_mode
=
2905 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2907 /* sysfs wakeup reason (pollable) -------------------------------------- */
2908 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2909 struct device_attribute
*attr
,
2912 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2915 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2916 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2918 static void hotkey_wakeup_reason_notify_change(void)
2920 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2924 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2925 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2926 struct device_attribute
*attr
,
2929 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2932 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2933 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2934 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2936 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2938 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2939 "wakeup_hotunplug_complete");
2942 /* --------------------------------------------------------------------- */
2944 static struct attribute
*hotkey_attributes
[] __initdata
= {
2945 &dev_attr_hotkey_enable
.attr
,
2946 &dev_attr_hotkey_bios_enabled
.attr
,
2947 &dev_attr_hotkey_bios_mask
.attr
,
2948 &dev_attr_hotkey_report_mode
.attr
,
2949 &dev_attr_hotkey_wakeup_reason
.attr
,
2950 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2951 &dev_attr_hotkey_mask
.attr
,
2952 &dev_attr_hotkey_all_mask
.attr
,
2953 &dev_attr_hotkey_recommended_mask
.attr
,
2954 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2955 &dev_attr_hotkey_source_mask
.attr
,
2956 &dev_attr_hotkey_poll_freq
.attr
,
2961 * Sync both the hw and sw blocking state of all switches
2963 static void tpacpi_send_radiosw_update(void)
2968 * We must sync all rfkill controllers *before* issuing any
2969 * rfkill input events, or we will race the rfkill core input
2972 * tpacpi_inputdev_send_mutex works as a synchronization point
2975 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2978 wlsw
= hotkey_get_wlsw();
2980 /* Sync hw blocking state first if it is hw-blocked */
2981 if (wlsw
== TPACPI_RFK_RADIO_OFF
)
2982 tpacpi_rfk_update_hwblock_state(true);
2984 /* Sync sw blocking state */
2985 tpacpi_rfk_update_swstate_all();
2987 /* Sync hw blocking state last if it is hw-unblocked */
2988 if (wlsw
== TPACPI_RFK_RADIO_ON
)
2989 tpacpi_rfk_update_hwblock_state(false);
2991 /* Issue rfkill input event for WLSW switch */
2993 mutex_lock(&tpacpi_inputdev_send_mutex
);
2995 input_report_switch(tpacpi_inputdev
,
2996 SW_RFKILL_ALL
, (wlsw
> 0));
2997 input_sync(tpacpi_inputdev
);
2999 mutex_unlock(&tpacpi_inputdev_send_mutex
);
3003 * this can be unconditional, as we will poll state again
3004 * if userspace uses the notify to read data
3006 hotkey_radio_sw_notify_change();
3009 static void hotkey_exit(void)
3011 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3012 mutex_lock(&hotkey_mutex
);
3013 hotkey_poll_stop_sync();
3014 mutex_unlock(&hotkey_mutex
);
3017 if (hotkey_dev_attributes
)
3018 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3020 dbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_HKEY
,
3021 "restoring original HKEY status and mask\n");
3022 /* yes, there is a bitwise or below, we want the
3023 * functions to be called even if one of them fail */
3024 if (((tp_features
.hotkey_mask
&&
3025 hotkey_mask_set(hotkey_orig_mask
)) |
3026 hotkey_status_set(false)) != 0)
3027 pr_err("failed to restore hot key mask "
3028 "to BIOS defaults\n");
3031 static void __init
hotkey_unmap(const unsigned int scancode
)
3033 if (hotkey_keycode_map
[scancode
] != KEY_RESERVED
) {
3034 clear_bit(hotkey_keycode_map
[scancode
],
3035 tpacpi_inputdev
->keybit
);
3036 hotkey_keycode_map
[scancode
] = KEY_RESERVED
;
3042 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3045 #define TPACPI_HK_Q_INIMASK 0x0001
3047 static const struct tpacpi_quirk tpacpi_hotkey_qtable
[] __initconst
= {
3048 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK
), /* 600E */
3049 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK
), /* 600E */
3050 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK
), /* 770, 770E, 770ED */
3051 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK
), /* A20m */
3052 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK
), /* A20p */
3053 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK
), /* A21e, A22e */
3054 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK
), /* A21e */
3055 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK
), /* A21m, A22m */
3056 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK
), /* A21p, A22p */
3057 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK
), /* A22e */
3058 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK
), /* A22m */
3059 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK
), /* A30/p (0) */
3060 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK
), /* R30 */
3061 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK
), /* R31 */
3062 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK
), /* T20 */
3063 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK
), /* T21 */
3064 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK
), /* T22 */
3065 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK
), /* X20, X21 */
3066 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK
), /* X22, X23, X24 */
3069 typedef u16 tpacpi_keymap_entry_t
;
3070 typedef tpacpi_keymap_entry_t tpacpi_keymap_t
[TPACPI_HOTKEY_MAP_LEN
];
3072 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
3074 /* Requirements for changing the default keymaps:
3076 * 1. Many of the keys are mapped to KEY_RESERVED for very
3077 * good reasons. Do not change them unless you have deep
3078 * knowledge on the IBM and Lenovo ThinkPad firmware for
3079 * the various ThinkPad models. The driver behaves
3080 * differently for KEY_RESERVED: such keys have their
3081 * hot key mask *unset* in mask_recommended, and also
3082 * in the initial hot key mask programmed into the
3083 * firmware at driver load time, which means the firm-
3084 * ware may react very differently if you change them to
3087 * 2. You must be subscribed to the linux-thinkpad and
3088 * ibm-acpi-devel mailing lists, and you should read the
3089 * list archives since 2007 if you want to change the
3090 * keymaps. This requirement exists so that you will
3091 * know the past history of problems with the thinkpad-
3092 * acpi driver keymaps, and also that you will be
3093 * listening to any bug reports;
3095 * 3. Do not send thinkpad-acpi specific patches directly to
3096 * for merging, *ever*. Send them to the linux-acpi
3097 * mailinglist for comments. Merging is to be done only
3098 * through acpi-test and the ACPI maintainer.
3100 * If the above is too much to ask, don't change the keymap.
3101 * Ask the thinkpad-acpi maintainer to do it, instead.
3105 TPACPI_KEYMAP_IBM_GENERIC
= 0,
3106 TPACPI_KEYMAP_LENOVO_GENERIC
,
3109 static const tpacpi_keymap_t tpacpi_keymaps
[] __initconst
= {
3110 /* Generic keymap for IBM ThinkPads */
3111 [TPACPI_KEYMAP_IBM_GENERIC
] = {
3112 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3113 KEY_FN_F1
, KEY_BATTERY
, KEY_COFFEE
, KEY_SLEEP
,
3114 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3115 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3117 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3118 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3119 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3120 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3122 /* brightness: firmware always reacts to them */
3123 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
3124 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
3126 /* Thinklight: firmware always react to it */
3127 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3129 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3130 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3132 /* Volume: firmware always react to it and reprograms
3133 * the built-in *extra* mixer. Never map it to control
3134 * another mixer by default. */
3135 KEY_RESERVED
, /* 0x14: VOLUME UP */
3136 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3137 KEY_RESERVED
, /* 0x16: MUTE */
3139 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3141 /* (assignments unknown, please report if found) */
3142 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3143 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3146 /* Generic keymap for Lenovo ThinkPads */
3147 [TPACPI_KEYMAP_LENOVO_GENERIC
] = {
3148 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3149 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
3150 KEY_WLAN
, KEY_CAMERA
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3151 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3153 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3154 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3155 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3156 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3158 /* These should be enabled --only-- when ACPI video
3159 * is disabled (i.e. in "vendor" mode), and are handled
3160 * in a special way by the init code */
3161 KEY_BRIGHTNESSUP
, /* 0x0F: FN+HOME (brightness up) */
3162 KEY_BRIGHTNESSDOWN
, /* 0x10: FN+END (brightness down) */
3164 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3166 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3167 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3169 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3170 * react to it and reprograms the built-in *extra* mixer.
3171 * Never map it to control another mixer by default.
3173 * T60?, T61, R60?, R61: firmware and EC tries to send
3174 * these over the regular keyboard, so these are no-ops,
3175 * but there are still weird bugs re. MUTE, so do not
3176 * change unless you get test reports from all Lenovo
3177 * models. May cause the BIOS to interfere with the
3180 KEY_RESERVED
, /* 0x14: VOLUME UP */
3181 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3182 KEY_RESERVED
, /* 0x16: MUTE */
3184 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3186 /* (assignments unknown, please report if found) */
3187 KEY_UNKNOWN
, KEY_UNKNOWN
,
3190 * The mic mute button only sends 0x1a. It does not
3191 * automatically mute the mic or change the mute light.
3193 KEY_MICMUTE
, /* 0x1a: Mic mute (since ?400 or so) */
3195 /* (assignments unknown, please report if found) */
3196 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3201 static const struct tpacpi_quirk tpacpi_keymap_qtable
[] __initconst
= {
3202 /* Generic maps (fallback) */
3204 .vendor
= PCI_VENDOR_ID_IBM
,
3205 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
3206 .quirks
= TPACPI_KEYMAP_IBM_GENERIC
,
3209 .vendor
= PCI_VENDOR_ID_LENOVO
,
3210 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
3211 .quirks
= TPACPI_KEYMAP_LENOVO_GENERIC
,
3215 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
3216 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
3221 bool radiosw_state
= false;
3222 bool tabletsw_state
= false;
3224 unsigned long quirks
;
3225 unsigned long keymap_id
;
3227 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3228 "initializing hotkey subdriver\n");
3230 BUG_ON(!tpacpi_inputdev
);
3231 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
3232 tpacpi_inputdev
->close
!= NULL
);
3234 TPACPI_ACPIHANDLE_INIT(hkey
);
3235 mutex_init(&hotkey_mutex
);
3237 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3238 mutex_init(&hotkey_thread_mutex
);
3239 mutex_init(&hotkey_thread_data_mutex
);
3242 /* hotkey not supported on 570 */
3243 tp_features
.hotkey
= hkey_handle
!= NULL
;
3245 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3247 str_supported(tp_features
.hotkey
));
3249 if (!tp_features
.hotkey
)
3252 quirks
= tpacpi_check_quirks(tpacpi_hotkey_qtable
,
3253 ARRAY_SIZE(tpacpi_hotkey_qtable
));
3255 tpacpi_disable_brightness_delay();
3257 /* MUST have enough space for all attributes to be added to
3258 * hotkey_dev_attributes */
3259 hotkey_dev_attributes
= create_attr_set(
3260 ARRAY_SIZE(hotkey_attributes
) + 2,
3262 if (!hotkey_dev_attributes
)
3264 res
= add_many_to_attr_set(hotkey_dev_attributes
,
3266 ARRAY_SIZE(hotkey_attributes
));
3270 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
3271 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3272 for HKEY interface version 0x100 */
3273 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
3274 if ((hkeyv
>> 8) != 1) {
3275 pr_err("unknown version of the HKEY interface: 0x%x\n",
3277 pr_err("please report this to %s\n", TPACPI_MAIL
);
3280 * MHKV 0x100 in A31, R40, R40e,
3281 * T4x, X31, and later
3283 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3284 "firmware HKEY interface version: 0x%x\n",
3287 /* Paranoia check AND init hotkey_all_mask */
3288 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
3290 pr_err("missing MHKA handler, "
3291 "please report this to %s\n",
3293 /* Fallback: pre-init for FN+F3,F4,F12 */
3294 hotkey_all_mask
= 0x080cU
;
3296 tp_features
.hotkey_mask
= 1;
3301 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3302 "hotkey masks are %s\n",
3303 str_supported(tp_features
.hotkey_mask
));
3305 /* Init hotkey_all_mask if not initialized yet */
3306 if (!tp_features
.hotkey_mask
&& !hotkey_all_mask
&&
3307 (quirks
& TPACPI_HK_Q_INIMASK
))
3308 hotkey_all_mask
= 0x080cU
; /* FN+F12, FN+F4, FN+F3 */
3310 /* Init hotkey_acpi_mask and hotkey_orig_mask */
3311 if (tp_features
.hotkey_mask
) {
3312 /* hotkey_source_mask *must* be zero for
3313 * the first hotkey_mask_get to return hotkey_orig_mask */
3314 res
= hotkey_mask_get();
3318 hotkey_orig_mask
= hotkey_acpi_mask
;
3320 hotkey_orig_mask
= hotkey_all_mask
;
3321 hotkey_acpi_mask
= hotkey_all_mask
;
3324 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3326 tp_features
.hotkey_wlsw
= 1;
3327 radiosw_state
= !!tpacpi_wlsw_emulstate
;
3328 pr_info("radio switch emulation enabled\n");
3331 /* Not all thinkpads have a hardware radio switch */
3332 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
3333 tp_features
.hotkey_wlsw
= 1;
3334 radiosw_state
= !!status
;
3335 pr_info("radio switch found; radios are %s\n",
3336 enabled(status
, 0));
3338 if (tp_features
.hotkey_wlsw
)
3339 res
= add_to_attr_set(hotkey_dev_attributes
,
3340 &dev_attr_hotkey_radio_sw
.attr
);
3342 /* For X41t, X60t, X61t Tablets... */
3343 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
3344 tp_features
.hotkey_tablet
= 1;
3345 tabletsw_state
= !!(status
& TP_HOTKEY_TABLET_MASK
);
3346 pr_info("possible tablet mode switch found; "
3347 "ThinkPad in %s mode\n",
3348 (tabletsw_state
) ? "tablet" : "laptop");
3349 res
= add_to_attr_set(hotkey_dev_attributes
,
3350 &dev_attr_hotkey_tablet_mode
.attr
);
3354 res
= register_attr_set_with_sysfs(
3355 hotkey_dev_attributes
,
3356 &tpacpi_pdev
->dev
.kobj
);
3360 /* Set up key map */
3361 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
3363 if (!hotkey_keycode_map
) {
3364 pr_err("failed to allocate memory for key map\n");
3369 keymap_id
= tpacpi_check_quirks(tpacpi_keymap_qtable
,
3370 ARRAY_SIZE(tpacpi_keymap_qtable
));
3371 BUG_ON(keymap_id
>= ARRAY_SIZE(tpacpi_keymaps
));
3372 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3373 "using keymap number %lu\n", keymap_id
);
3375 memcpy(hotkey_keycode_map
, &tpacpi_keymaps
[keymap_id
],
3376 TPACPI_HOTKEY_MAP_SIZE
);
3378 input_set_capability(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
);
3379 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
3380 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
3381 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
3382 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
3383 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
3384 input_set_capability(tpacpi_inputdev
, EV_KEY
,
3385 hotkey_keycode_map
[i
]);
3387 if (i
< sizeof(hotkey_reserved_mask
)*8)
3388 hotkey_reserved_mask
|= 1 << i
;
3392 if (tp_features
.hotkey_wlsw
) {
3393 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_RFKILL_ALL
);
3394 input_report_switch(tpacpi_inputdev
,
3395 SW_RFKILL_ALL
, radiosw_state
);
3397 if (tp_features
.hotkey_tablet
) {
3398 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_TABLET_MODE
);
3399 input_report_switch(tpacpi_inputdev
,
3400 SW_TABLET_MODE
, tabletsw_state
);
3403 /* Do not issue duplicate brightness change events to
3404 * userspace. tpacpi_detect_brightness_capabilities() must have
3405 * been called before this point */
3406 if (acpi_video_backlight_support()) {
3407 pr_info("This ThinkPad has standard ACPI backlight "
3408 "brightness control, supported by the ACPI "
3410 pr_notice("Disabling thinkpad-acpi brightness events "
3413 /* Disable brightness up/down on Lenovo thinkpads when
3414 * ACPI is handling them, otherwise it is plain impossible
3415 * for userspace to do something even remotely sane */
3416 hotkey_reserved_mask
|=
3417 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
3418 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
3419 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME
);
3420 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND
);
3423 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3424 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
3426 & ~hotkey_reserved_mask
;
3428 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3429 "hotkey source mask 0x%08x, polling freq %u\n",
3430 hotkey_source_mask
, hotkey_poll_freq
);
3433 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3434 "enabling firmware HKEY event interface...\n");
3435 res
= hotkey_status_set(true);
3440 res
= hotkey_mask_set(((hotkey_all_mask
& ~hotkey_reserved_mask
)
3441 | hotkey_driver_mask
)
3442 & ~hotkey_source_mask
);
3443 if (res
< 0 && res
!= -ENXIO
) {
3447 hotkey_user_mask
= (hotkey_acpi_mask
| hotkey_source_mask
)
3448 & ~hotkey_reserved_mask
;
3449 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3450 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3451 hotkey_user_mask
, hotkey_acpi_mask
, hotkey_source_mask
);
3453 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3454 "legacy ibm/hotkey event reporting over procfs %s\n",
3455 (hotkey_report_mode
< 2) ?
3456 "enabled" : "disabled");
3458 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
3459 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
3461 hotkey_poll_setup_safe(true);
3466 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3467 hotkey_dev_attributes
= NULL
;
3469 return (res
< 0)? res
: 1;
3472 static bool hotkey_notify_hotkey(const u32 hkey
,
3474 bool *ignore_acpi_ev
)
3476 /* 0x1000-0x1FFF: key presses */
3477 unsigned int scancode
= hkey
& 0xfff;
3478 *send_acpi_ev
= true;
3479 *ignore_acpi_ev
= false;
3481 /* HKEY event 0x1001 is scancode 0x00 */
3482 if (scancode
> 0 && scancode
<= TPACPI_HOTKEY_MAP_LEN
) {
3484 if (!(hotkey_source_mask
& (1 << scancode
))) {
3485 tpacpi_input_send_key_masked(scancode
);
3486 *send_acpi_ev
= false;
3488 *ignore_acpi_ev
= true;
3495 static bool hotkey_notify_wakeup(const u32 hkey
,
3497 bool *ignore_acpi_ev
)
3499 /* 0x2000-0x2FFF: Wakeup reason */
3500 *send_acpi_ev
= true;
3501 *ignore_acpi_ev
= false;
3504 case TP_HKEY_EV_WKUP_S3_UNDOCK
: /* suspend, undock */
3505 case TP_HKEY_EV_WKUP_S4_UNDOCK
: /* hibernation, undock */
3506 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
3507 *ignore_acpi_ev
= true;
3510 case TP_HKEY_EV_WKUP_S3_BAYEJ
: /* suspend, bay eject */
3511 case TP_HKEY_EV_WKUP_S4_BAYEJ
: /* hibernation, bay eject */
3512 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
3513 *ignore_acpi_ev
= true;
3516 case TP_HKEY_EV_WKUP_S3_BATLOW
: /* Battery on critical low level/S3 */
3517 case TP_HKEY_EV_WKUP_S4_BATLOW
: /* Battery on critical low level/S4 */
3518 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
3519 /* how to auto-heal: */
3520 /* 2313: woke up from S3, go to S4/S5 */
3521 /* 2413: woke up from S4, go to S5 */
3528 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
3529 pr_info("woke up due to a hot-unplug request...\n");
3530 hotkey_wakeup_reason_notify_change();
3535 static bool hotkey_notify_dockevent(const u32 hkey
,
3537 bool *ignore_acpi_ev
)
3539 /* 0x4000-0x4FFF: dock-related events */
3540 *send_acpi_ev
= true;
3541 *ignore_acpi_ev
= false;
3544 case TP_HKEY_EV_UNDOCK_ACK
:
3545 /* ACPI undock operation completed after wakeup */
3546 hotkey_autosleep_ack
= 1;
3547 pr_info("undocked\n");
3548 hotkey_wakeup_hotunplug_complete_notify_change();
3551 case TP_HKEY_EV_HOTPLUG_DOCK
: /* docked to port replicator */
3552 pr_info("docked into hotplug port replicator\n");
3554 case TP_HKEY_EV_HOTPLUG_UNDOCK
: /* undocked from port replicator */
3555 pr_info("undocked from hotplug port replicator\n");
3563 static bool hotkey_notify_usrevent(const u32 hkey
,
3565 bool *ignore_acpi_ev
)
3567 /* 0x5000-0x5FFF: human interface helpers */
3568 *send_acpi_ev
= true;
3569 *ignore_acpi_ev
= false;
3572 case TP_HKEY_EV_PEN_INSERTED
: /* X61t: tablet pen inserted into bay */
3573 case TP_HKEY_EV_PEN_REMOVED
: /* X61t: tablet pen removed from bay */
3576 case TP_HKEY_EV_TABLET_TABLET
: /* X41t-X61t: tablet mode */
3577 case TP_HKEY_EV_TABLET_NOTEBOOK
: /* X41t-X61t: normal mode */
3578 tpacpi_input_send_tabletsw();
3579 hotkey_tablet_mode_notify_change();
3580 *send_acpi_ev
= false;
3583 case TP_HKEY_EV_LID_CLOSE
: /* Lid closed */
3584 case TP_HKEY_EV_LID_OPEN
: /* Lid opened */
3585 case TP_HKEY_EV_BRGHT_CHANGED
: /* brightness changed */
3586 /* do not propagate these events */
3587 *ignore_acpi_ev
= true;
3595 static void thermal_dump_all_sensors(void);
3597 static bool hotkey_notify_6xxx(const u32 hkey
,
3599 bool *ignore_acpi_ev
)
3603 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
3604 *send_acpi_ev
= true;
3605 *ignore_acpi_ev
= false;
3608 case TP_HKEY_EV_THM_TABLE_CHANGED
:
3609 pr_info("EC reports that Thermal Table has changed\n");
3610 /* recommended action: do nothing, we don't have
3611 * Lenovo ATM information */
3613 case TP_HKEY_EV_ALARM_BAT_HOT
:
3614 pr_crit("THERMAL ALARM: battery is too hot!\n");
3615 /* recommended action: warn user through gui */
3617 case TP_HKEY_EV_ALARM_BAT_XHOT
:
3618 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
3619 /* recommended action: immediate sleep/hibernate */
3621 case TP_HKEY_EV_ALARM_SENSOR_HOT
:
3622 pr_crit("THERMAL ALARM: "
3623 "a sensor reports something is too hot!\n");
3624 /* recommended action: warn user through gui, that */
3625 /* some internal component is too hot */
3627 case TP_HKEY_EV_ALARM_SENSOR_XHOT
:
3628 pr_alert("THERMAL EMERGENCY: "
3629 "a sensor reports something is extremely hot!\n");
3630 /* recommended action: immediate sleep/hibernate */
3633 case TP_HKEY_EV_KEY_NUMLOCK
:
3634 case TP_HKEY_EV_KEY_FN
:
3635 /* key press events, we just ignore them as long as the EC
3636 * is still reporting them in the normal keyboard stream */
3637 *send_acpi_ev
= false;
3638 *ignore_acpi_ev
= true;
3642 pr_warn("unknown possible thermal alarm or keyboard event received\n");
3646 thermal_dump_all_sensors();
3651 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
3655 bool ignore_acpi_ev
;
3658 if (event
!= 0x80) {
3659 pr_err("unknown HKEY notification event %d\n", event
);
3660 /* forward it to userspace, maybe it knows how to handle it */
3661 acpi_bus_generate_netlink_event(
3662 ibm
->acpi
->device
->pnp
.device_class
,
3663 dev_name(&ibm
->acpi
->device
->dev
),
3669 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
3670 pr_err("failed to retrieve HKEY event\n");
3679 send_acpi_ev
= true;
3680 ignore_acpi_ev
= false;
3682 switch (hkey
>> 12) {
3684 /* 0x1000-0x1FFF: key presses */
3685 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
3689 /* 0x2000-0x2FFF: Wakeup reason */
3690 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
3694 /* 0x3000-0x3FFF: bay-related wakeups */
3696 case TP_HKEY_EV_BAYEJ_ACK
:
3697 hotkey_autosleep_ack
= 1;
3698 pr_info("bay ejected\n");
3699 hotkey_wakeup_hotunplug_complete_notify_change();
3702 case TP_HKEY_EV_OPTDRV_EJ
:
3703 /* FIXME: kick libata if SATA link offline */
3711 /* 0x4000-0x4FFF: dock-related events */
3712 known_ev
= hotkey_notify_dockevent(hkey
, &send_acpi_ev
,
3716 /* 0x5000-0x5FFF: human interface helpers */
3717 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
3721 /* 0x6000-0x6FFF: thermal alarms/notices and
3722 * keyboard events */
3723 known_ev
= hotkey_notify_6xxx(hkey
, &send_acpi_ev
,
3727 /* 0x7000-0x7FFF: misc */
3728 if (tp_features
.hotkey_wlsw
&&
3729 hkey
== TP_HKEY_EV_RFKILL_CHANGED
) {
3730 tpacpi_send_radiosw_update();
3735 /* fallthrough to default */
3740 pr_notice("unhandled HKEY event 0x%04x\n", hkey
);
3741 pr_notice("please report the conditions when this "
3742 "event happened to %s\n", TPACPI_MAIL
);
3746 if (!ignore_acpi_ev
&&
3747 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
3748 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
3752 /* netlink events */
3753 if (!ignore_acpi_ev
&& send_acpi_ev
) {
3754 acpi_bus_generate_netlink_event(
3755 ibm
->acpi
->device
->pnp
.device_class
,
3756 dev_name(&ibm
->acpi
->device
->dev
),
3762 static void hotkey_suspend(void)
3764 /* Do these on suspend, we get the events on early resume! */
3765 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
3766 hotkey_autosleep_ack
= 0;
3769 static void hotkey_resume(void)
3771 tpacpi_disable_brightness_delay();
3773 if (hotkey_status_set(true) < 0 ||
3774 hotkey_mask_set(hotkey_acpi_mask
) < 0)
3775 pr_err("error while attempting to reset the event "
3776 "firmware interface\n");
3778 tpacpi_send_radiosw_update();
3779 hotkey_tablet_mode_notify_change();
3780 hotkey_wakeup_reason_notify_change();
3781 hotkey_wakeup_hotunplug_complete_notify_change();
3782 hotkey_poll_setup_safe(false);
3785 /* procfs -------------------------------------------------------------- */
3786 static int hotkey_read(struct seq_file
*m
)
3790 if (!tp_features
.hotkey
) {
3791 seq_printf(m
, "status:\t\tnot supported\n");
3795 if (mutex_lock_killable(&hotkey_mutex
))
3796 return -ERESTARTSYS
;
3797 res
= hotkey_status_get(&status
);
3799 res
= hotkey_mask_get();
3800 mutex_unlock(&hotkey_mutex
);
3804 seq_printf(m
, "status:\t\t%s\n", enabled(status
, 0));
3805 if (hotkey_all_mask
) {
3806 seq_printf(m
, "mask:\t\t0x%08x\n", hotkey_user_mask
);
3807 seq_printf(m
, "commands:\tenable, disable, reset, <mask>\n");
3809 seq_printf(m
, "mask:\t\tnot supported\n");
3810 seq_printf(m
, "commands:\tenable, disable, reset\n");
3816 static void hotkey_enabledisable_warn(bool enable
)
3818 tpacpi_log_usertask("procfs hotkey enable/disable");
3819 if (!WARN((tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
|| !enable
),
3820 pr_fmt("hotkey enable/disable functionality has been "
3821 "removed from the driver. "
3822 "Hotkeys are always enabled.\n")))
3823 pr_err("Please remove the hotkey=enable module "
3824 "parameter, it is deprecated. "
3825 "Hotkeys are always enabled.\n");
3828 static int hotkey_write(char *buf
)
3834 if (!tp_features
.hotkey
)
3837 if (mutex_lock_killable(&hotkey_mutex
))
3838 return -ERESTARTSYS
;
3840 mask
= hotkey_user_mask
;
3843 while ((cmd
= next_cmd(&buf
))) {
3844 if (strlencmp(cmd
, "enable") == 0) {
3845 hotkey_enabledisable_warn(1);
3846 } else if (strlencmp(cmd
, "disable") == 0) {
3847 hotkey_enabledisable_warn(0);
3849 } else if (strlencmp(cmd
, "reset") == 0) {
3850 mask
= (hotkey_all_mask
| hotkey_source_mask
)
3851 & ~hotkey_reserved_mask
;
3852 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
3854 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
3863 tpacpi_disclose_usertask("procfs hotkey",
3864 "set mask to 0x%08x\n", mask
);
3865 res
= hotkey_user_mask_set(mask
);
3869 mutex_unlock(&hotkey_mutex
);
3873 static const struct acpi_device_id ibm_htk_device_ids
[] = {
3874 {TPACPI_ACPI_IBM_HKEY_HID
, 0},
3875 {TPACPI_ACPI_LENOVO_HKEY_HID
, 0},
3879 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
3880 .hid
= ibm_htk_device_ids
,
3881 .notify
= hotkey_notify
,
3882 .handle
= &hkey_handle
,
3883 .type
= ACPI_DEVICE_NOTIFY
,
3886 static struct ibm_struct hotkey_driver_data
= {
3888 .read
= hotkey_read
,
3889 .write
= hotkey_write
,
3890 .exit
= hotkey_exit
,
3891 .resume
= hotkey_resume
,
3892 .suspend
= hotkey_suspend
,
3893 .acpi
= &ibm_hotkey_acpidriver
,
3896 /*************************************************************************
3897 * Bluetooth subdriver
3901 /* ACPI GBDC/SBDC bits */
3902 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
3903 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
3904 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
3905 0 = disable, 1 = enable */
3909 /* ACPI \BLTH commands */
3910 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
3911 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
3912 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
3913 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
3914 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
3917 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3919 static int bluetooth_get_status(void)
3923 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3924 if (dbg_bluetoothemul
)
3925 return (tpacpi_bluetooth_emulstate
) ?
3926 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3929 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3932 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3933 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3936 static int bluetooth_set_status(enum tpacpi_rfkill_state state
)
3940 vdbg_printk(TPACPI_DBG_RFKILL
,
3941 "will attempt to %s bluetooth\n",
3942 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
3944 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3945 if (dbg_bluetoothemul
) {
3946 tpacpi_bluetooth_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
3951 if (state
== TPACPI_RFK_RADIO_ON
)
3952 status
= TP_ACPI_BLUETOOTH_RADIOSSW
3953 | TP_ACPI_BLUETOOTH_RESUMECTRL
;
3957 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3963 /* sysfs bluetooth enable ---------------------------------------------- */
3964 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3965 struct device_attribute
*attr
,
3968 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID
,
3972 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3973 struct device_attribute
*attr
,
3974 const char *buf
, size_t count
)
3976 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID
,
3980 static struct device_attribute dev_attr_bluetooth_enable
=
3981 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3982 bluetooth_enable_show
, bluetooth_enable_store
);
3984 /* --------------------------------------------------------------------- */
3986 static struct attribute
*bluetooth_attributes
[] = {
3987 &dev_attr_bluetooth_enable
.attr
,
3991 static const struct attribute_group bluetooth_attr_group
= {
3992 .attrs
= bluetooth_attributes
,
3995 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops
= {
3996 .get_status
= bluetooth_get_status
,
3997 .set_status
= bluetooth_set_status
,
4000 static void bluetooth_shutdown(void)
4002 /* Order firmware to save current state to NVRAM */
4003 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
4004 TP_ACPI_BLTH_SAVE_STATE
))
4005 pr_notice("failed to save bluetooth state to NVRAM\n");
4007 vdbg_printk(TPACPI_DBG_RFKILL
,
4008 "bluetooth state saved to NVRAM\n");
4011 static void bluetooth_exit(void)
4013 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
4014 &bluetooth_attr_group
);
4016 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
4018 bluetooth_shutdown();
4021 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
4026 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4027 "initializing bluetooth subdriver\n");
4029 TPACPI_ACPIHANDLE_INIT(hkey
);
4031 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4032 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
4033 tp_features
.bluetooth
= hkey_handle
&&
4034 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
4036 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4037 "bluetooth is %s, status 0x%02x\n",
4038 str_supported(tp_features
.bluetooth
),
4041 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4042 if (dbg_bluetoothemul
) {
4043 tp_features
.bluetooth
= 1;
4044 pr_info("bluetooth switch emulation enabled\n");
4047 if (tp_features
.bluetooth
&&
4048 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
4049 /* no bluetooth hardware present in system */
4050 tp_features
.bluetooth
= 0;
4051 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4052 "bluetooth hardware not installed\n");
4055 if (!tp_features
.bluetooth
)
4058 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
4059 &bluetooth_tprfk_ops
,
4060 RFKILL_TYPE_BLUETOOTH
,
4061 TPACPI_RFK_BLUETOOTH_SW_NAME
,
4066 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4067 &bluetooth_attr_group
);
4069 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
4076 /* procfs -------------------------------------------------------------- */
4077 static int bluetooth_read(struct seq_file
*m
)
4079 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID
, m
);
4082 static int bluetooth_write(char *buf
)
4084 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID
, buf
);
4087 static struct ibm_struct bluetooth_driver_data
= {
4088 .name
= "bluetooth",
4089 .read
= bluetooth_read
,
4090 .write
= bluetooth_write
,
4091 .exit
= bluetooth_exit
,
4092 .shutdown
= bluetooth_shutdown
,
4095 /*************************************************************************
4100 /* ACPI GWAN/SWAN bits */
4101 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
4102 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
4103 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
4104 0 = disable, 1 = enable */
4107 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4109 static int wan_get_status(void)
4113 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4115 return (tpacpi_wwan_emulstate
) ?
4116 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4119 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
4122 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
4123 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4126 static int wan_set_status(enum tpacpi_rfkill_state state
)
4130 vdbg_printk(TPACPI_DBG_RFKILL
,
4131 "will attempt to %s wwan\n",
4132 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4134 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4136 tpacpi_wwan_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4141 if (state
== TPACPI_RFK_RADIO_ON
)
4142 status
= TP_ACPI_WANCARD_RADIOSSW
4143 | TP_ACPI_WANCARD_RESUMECTRL
;
4147 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
4153 /* sysfs wan enable ---------------------------------------------------- */
4154 static ssize_t
wan_enable_show(struct device
*dev
,
4155 struct device_attribute
*attr
,
4158 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID
,
4162 static ssize_t
wan_enable_store(struct device
*dev
,
4163 struct device_attribute
*attr
,
4164 const char *buf
, size_t count
)
4166 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID
,
4170 static struct device_attribute dev_attr_wan_enable
=
4171 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
4172 wan_enable_show
, wan_enable_store
);
4174 /* --------------------------------------------------------------------- */
4176 static struct attribute
*wan_attributes
[] = {
4177 &dev_attr_wan_enable
.attr
,
4181 static const struct attribute_group wan_attr_group
= {
4182 .attrs
= wan_attributes
,
4185 static const struct tpacpi_rfk_ops wan_tprfk_ops
= {
4186 .get_status
= wan_get_status
,
4187 .set_status
= wan_set_status
,
4190 static void wan_shutdown(void)
4192 /* Order firmware to save current state to NVRAM */
4193 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
4194 TP_ACPI_WGSV_SAVE_STATE
))
4195 pr_notice("failed to save WWAN state to NVRAM\n");
4197 vdbg_printk(TPACPI_DBG_RFKILL
,
4198 "WWAN state saved to NVRAM\n");
4201 static void wan_exit(void)
4203 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
4206 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4211 static int __init
wan_init(struct ibm_init_struct
*iibm
)
4216 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4217 "initializing wan subdriver\n");
4219 TPACPI_ACPIHANDLE_INIT(hkey
);
4221 tp_features
.wan
= hkey_handle
&&
4222 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
4224 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4225 "wan is %s, status 0x%02x\n",
4226 str_supported(tp_features
.wan
),
4229 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4231 tp_features
.wan
= 1;
4232 pr_info("wwan switch emulation enabled\n");
4235 if (tp_features
.wan
&&
4236 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
4237 /* no wan hardware present in system */
4238 tp_features
.wan
= 0;
4239 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4240 "wan hardware not installed\n");
4243 if (!tp_features
.wan
)
4246 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
4249 TPACPI_RFK_WWAN_SW_NAME
,
4254 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4258 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4265 /* procfs -------------------------------------------------------------- */
4266 static int wan_read(struct seq_file
*m
)
4268 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID
, m
);
4271 static int wan_write(char *buf
)
4273 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID
, buf
);
4276 static struct ibm_struct wan_driver_data
= {
4281 .shutdown
= wan_shutdown
,
4284 /*************************************************************************
4289 /* ACPI GUWB/SUWB bits */
4290 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
4291 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
4294 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4296 static int uwb_get_status(void)
4300 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4302 return (tpacpi_uwb_emulstate
) ?
4303 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4306 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
4309 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
4310 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4313 static int uwb_set_status(enum tpacpi_rfkill_state state
)
4317 vdbg_printk(TPACPI_DBG_RFKILL
,
4318 "will attempt to %s UWB\n",
4319 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4321 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4323 tpacpi_uwb_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4328 if (state
== TPACPI_RFK_RADIO_ON
)
4329 status
= TP_ACPI_UWB_RADIOSSW
;
4333 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
4339 /* --------------------------------------------------------------------- */
4341 static const struct tpacpi_rfk_ops uwb_tprfk_ops
= {
4342 .get_status
= uwb_get_status
,
4343 .set_status
= uwb_set_status
,
4346 static void uwb_exit(void)
4348 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID
);
4351 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
4356 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4357 "initializing uwb subdriver\n");
4359 TPACPI_ACPIHANDLE_INIT(hkey
);
4361 tp_features
.uwb
= hkey_handle
&&
4362 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
4364 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4365 "uwb is %s, status 0x%02x\n",
4366 str_supported(tp_features
.uwb
),
4369 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4371 tp_features
.uwb
= 1;
4372 pr_info("uwb switch emulation enabled\n");
4375 if (tp_features
.uwb
&&
4376 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
4377 /* no uwb hardware present in system */
4378 tp_features
.uwb
= 0;
4379 dbg_printk(TPACPI_DBG_INIT
,
4380 "uwb hardware not installed\n");
4383 if (!tp_features
.uwb
)
4386 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
4389 TPACPI_RFK_UWB_SW_NAME
,
4394 static struct ibm_struct uwb_driver_data
= {
4397 .flags
.experimental
= 1,
4400 /*************************************************************************
4404 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4406 enum video_access_mode
{
4407 TPACPI_VIDEO_NONE
= 0,
4408 TPACPI_VIDEO_570
, /* 570 */
4409 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
4410 TPACPI_VIDEO_NEW
, /* all others */
4413 enum { /* video status flags, based on VIDEO_570 */
4414 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
4415 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
4416 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
4419 enum { /* TPACPI_VIDEO_570 constants */
4420 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
4421 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
4422 * video_status_flags */
4423 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
4424 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
4427 static enum video_access_mode video_supported
;
4428 static int video_orig_autosw
;
4430 static int video_autosw_get(void);
4431 static int video_autosw_set(int enable
);
4433 TPACPI_HANDLE(vid
, root
,
4434 "\\_SB.PCI.AGP.VGA", /* 570 */
4435 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4436 "\\_SB.PCI0.VID0", /* 770e */
4437 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4438 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4439 "\\_SB.PCI0.AGP.VID", /* all others */
4442 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4444 static int __init
video_init(struct ibm_init_struct
*iibm
)
4448 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
4450 TPACPI_ACPIHANDLE_INIT(vid
);
4451 if (tpacpi_is_ibm())
4452 TPACPI_ACPIHANDLE_INIT(vid2
);
4454 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
4455 /* G41, assume IVGA doesn't change */
4456 vid_handle
= vid2_handle
;
4459 /* video switching not supported on R30, R31 */
4460 video_supported
= TPACPI_VIDEO_NONE
;
4461 else if (tpacpi_is_ibm() &&
4462 acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
4464 video_supported
= TPACPI_VIDEO_570
;
4465 else if (tpacpi_is_ibm() &&
4466 acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
4467 /* 600e/x, 770e, 770x */
4468 video_supported
= TPACPI_VIDEO_770
;
4471 video_supported
= TPACPI_VIDEO_NEW
;
4473 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
4474 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
4477 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
4480 static void video_exit(void)
4482 dbg_printk(TPACPI_DBG_EXIT
,
4483 "restoring original video autoswitch mode\n");
4484 if (video_autosw_set(video_orig_autosw
))
4485 pr_err("error while trying to restore original "
4486 "video autoswitch mode\n");
4489 static int video_outputsw_get(void)
4494 switch (video_supported
) {
4495 case TPACPI_VIDEO_570
:
4496 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
4497 TP_ACPI_VIDEO_570_PHSCMD
))
4499 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
4501 case TPACPI_VIDEO_770
:
4502 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4505 status
|= TP_ACPI_VIDEO_S_LCD
;
4506 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4509 status
|= TP_ACPI_VIDEO_S_CRT
;
4511 case TPACPI_VIDEO_NEW
:
4512 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
4513 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4516 status
|= TP_ACPI_VIDEO_S_CRT
;
4518 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
4519 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4522 status
|= TP_ACPI_VIDEO_S_LCD
;
4523 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
4526 status
|= TP_ACPI_VIDEO_S_DVI
;
4535 static int video_outputsw_set(int status
)
4540 switch (video_supported
) {
4541 case TPACPI_VIDEO_570
:
4542 res
= acpi_evalf(NULL
, NULL
,
4543 "\\_SB.PHS2", "vdd",
4544 TP_ACPI_VIDEO_570_PHS2CMD
,
4545 status
| TP_ACPI_VIDEO_570_PHS2SET
);
4547 case TPACPI_VIDEO_770
:
4548 autosw
= video_autosw_get();
4552 res
= video_autosw_set(1);
4555 res
= acpi_evalf(vid_handle
, NULL
,
4556 "ASWT", "vdd", status
* 0x100, 0);
4557 if (!autosw
&& video_autosw_set(autosw
)) {
4558 pr_err("video auto-switch left enabled due to error\n");
4562 case TPACPI_VIDEO_NEW
:
4563 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
4564 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
4570 return (res
)? 0 : -EIO
;
4573 static int video_autosw_get(void)
4577 switch (video_supported
) {
4578 case TPACPI_VIDEO_570
:
4579 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
4582 case TPACPI_VIDEO_770
:
4583 case TPACPI_VIDEO_NEW
:
4584 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
4594 static int video_autosw_set(int enable
)
4596 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
4601 static int video_outputsw_cycle(void)
4603 int autosw
= video_autosw_get();
4609 switch (video_supported
) {
4610 case TPACPI_VIDEO_570
:
4611 res
= video_autosw_set(1);
4614 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
4616 case TPACPI_VIDEO_770
:
4617 case TPACPI_VIDEO_NEW
:
4618 res
= video_autosw_set(1);
4621 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
4626 if (!autosw
&& video_autosw_set(autosw
)) {
4627 pr_err("video auto-switch left enabled due to error\n");
4631 return (res
)? 0 : -EIO
;
4634 static int video_expand_toggle(void)
4636 switch (video_supported
) {
4637 case TPACPI_VIDEO_570
:
4638 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
4640 case TPACPI_VIDEO_770
:
4641 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
4643 case TPACPI_VIDEO_NEW
:
4644 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
4652 static int video_read(struct seq_file
*m
)
4656 if (video_supported
== TPACPI_VIDEO_NONE
) {
4657 seq_printf(m
, "status:\t\tnot supported\n");
4661 /* Even reads can crash X.org, so... */
4662 if (!capable(CAP_SYS_ADMIN
))
4665 status
= video_outputsw_get();
4669 autosw
= video_autosw_get();
4673 seq_printf(m
, "status:\t\tsupported\n");
4674 seq_printf(m
, "lcd:\t\t%s\n", enabled(status
, 0));
4675 seq_printf(m
, "crt:\t\t%s\n", enabled(status
, 1));
4676 if (video_supported
== TPACPI_VIDEO_NEW
)
4677 seq_printf(m
, "dvi:\t\t%s\n", enabled(status
, 3));
4678 seq_printf(m
, "auto:\t\t%s\n", enabled(autosw
, 0));
4679 seq_printf(m
, "commands:\tlcd_enable, lcd_disable\n");
4680 seq_printf(m
, "commands:\tcrt_enable, crt_disable\n");
4681 if (video_supported
== TPACPI_VIDEO_NEW
)
4682 seq_printf(m
, "commands:\tdvi_enable, dvi_disable\n");
4683 seq_printf(m
, "commands:\tauto_enable, auto_disable\n");
4684 seq_printf(m
, "commands:\tvideo_switch, expand_toggle\n");
4689 static int video_write(char *buf
)
4692 int enable
, disable
, status
;
4695 if (video_supported
== TPACPI_VIDEO_NONE
)
4698 /* Even reads can crash X.org, let alone writes... */
4699 if (!capable(CAP_SYS_ADMIN
))
4705 while ((cmd
= next_cmd(&buf
))) {
4706 if (strlencmp(cmd
, "lcd_enable") == 0) {
4707 enable
|= TP_ACPI_VIDEO_S_LCD
;
4708 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
4709 disable
|= TP_ACPI_VIDEO_S_LCD
;
4710 } else if (strlencmp(cmd
, "crt_enable") == 0) {
4711 enable
|= TP_ACPI_VIDEO_S_CRT
;
4712 } else if (strlencmp(cmd
, "crt_disable") == 0) {
4713 disable
|= TP_ACPI_VIDEO_S_CRT
;
4714 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4715 strlencmp(cmd
, "dvi_enable") == 0) {
4716 enable
|= TP_ACPI_VIDEO_S_DVI
;
4717 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4718 strlencmp(cmd
, "dvi_disable") == 0) {
4719 disable
|= TP_ACPI_VIDEO_S_DVI
;
4720 } else if (strlencmp(cmd
, "auto_enable") == 0) {
4721 res
= video_autosw_set(1);
4724 } else if (strlencmp(cmd
, "auto_disable") == 0) {
4725 res
= video_autosw_set(0);
4728 } else if (strlencmp(cmd
, "video_switch") == 0) {
4729 res
= video_outputsw_cycle();
4732 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
4733 res
= video_expand_toggle();
4740 if (enable
|| disable
) {
4741 status
= video_outputsw_get();
4744 res
= video_outputsw_set((status
& ~disable
) | enable
);
4752 static struct ibm_struct video_driver_data
= {
4755 .write
= video_write
,
4759 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4761 /*************************************************************************
4762 * Light (thinklight) subdriver
4765 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4766 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4768 static int light_get_status(void)
4772 if (tp_features
.light_status
) {
4773 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4781 static int light_set_status(int status
)
4785 if (tp_features
.light
) {
4787 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4789 TP_CMOS_THINKLIGHT_ON
:
4790 TP_CMOS_THINKLIGHT_OFF
);
4792 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4795 return (rc
)? 0 : -EIO
;
4801 static void light_set_status_worker(struct work_struct
*work
)
4803 struct tpacpi_led_classdev
*data
=
4804 container_of(work
, struct tpacpi_led_classdev
, work
);
4806 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4807 light_set_status((data
->new_state
!= TPACPI_LED_OFF
));
4810 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4811 enum led_brightness brightness
)
4813 struct tpacpi_led_classdev
*data
=
4814 container_of(led_cdev
,
4815 struct tpacpi_led_classdev
,
4817 data
->new_state
= (brightness
!= LED_OFF
) ?
4818 TPACPI_LED_ON
: TPACPI_LED_OFF
;
4819 queue_work(tpacpi_wq
, &data
->work
);
4822 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4824 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4827 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4829 .name
= "tpacpi::thinklight",
4830 .brightness_set
= &light_sysfs_set
,
4831 .brightness_get
= &light_sysfs_get
,
4835 static int __init
light_init(struct ibm_init_struct
*iibm
)
4839 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4841 if (tpacpi_is_ibm()) {
4842 TPACPI_ACPIHANDLE_INIT(ledb
);
4843 TPACPI_ACPIHANDLE_INIT(lght
);
4845 TPACPI_ACPIHANDLE_INIT(cmos
);
4846 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4848 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4849 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4851 if (tp_features
.light
)
4852 /* light status not supported on
4853 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4854 tp_features
.light_status
=
4855 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4857 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4858 str_supported(tp_features
.light
),
4859 str_supported(tp_features
.light_status
));
4861 if (!tp_features
.light
)
4864 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4865 &tpacpi_led_thinklight
.led_classdev
);
4868 tp_features
.light
= 0;
4869 tp_features
.light_status
= 0;
4877 static void light_exit(void)
4879 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4880 if (work_pending(&tpacpi_led_thinklight
.work
))
4881 flush_workqueue(tpacpi_wq
);
4884 static int light_read(struct seq_file
*m
)
4888 if (!tp_features
.light
) {
4889 seq_printf(m
, "status:\t\tnot supported\n");
4890 } else if (!tp_features
.light_status
) {
4891 seq_printf(m
, "status:\t\tunknown\n");
4892 seq_printf(m
, "commands:\ton, off\n");
4894 status
= light_get_status();
4897 seq_printf(m
, "status:\t\t%s\n", onoff(status
, 0));
4898 seq_printf(m
, "commands:\ton, off\n");
4904 static int light_write(char *buf
)
4909 if (!tp_features
.light
)
4912 while ((cmd
= next_cmd(&buf
))) {
4913 if (strlencmp(cmd
, "on") == 0) {
4915 } else if (strlencmp(cmd
, "off") == 0) {
4921 return light_set_status(newstatus
);
4924 static struct ibm_struct light_driver_data
= {
4927 .write
= light_write
,
4931 /*************************************************************************
4935 /* sysfs cmos_command -------------------------------------------------- */
4936 static ssize_t
cmos_command_store(struct device
*dev
,
4937 struct device_attribute
*attr
,
4938 const char *buf
, size_t count
)
4940 unsigned long cmos_cmd
;
4943 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4946 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4947 return (res
)? res
: count
;
4950 static struct device_attribute dev_attr_cmos_command
=
4951 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4953 /* --------------------------------------------------------------------- */
4955 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4959 vdbg_printk(TPACPI_DBG_INIT
,
4960 "initializing cmos commands subdriver\n");
4962 TPACPI_ACPIHANDLE_INIT(cmos
);
4964 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4965 str_supported(cmos_handle
!= NULL
));
4967 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4971 return (cmos_handle
)? 0 : 1;
4974 static void cmos_exit(void)
4976 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4979 static int cmos_read(struct seq_file
*m
)
4981 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4982 R30, R31, T20-22, X20-21 */
4984 seq_printf(m
, "status:\t\tnot supported\n");
4986 seq_printf(m
, "status:\t\tsupported\n");
4987 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4993 static int cmos_write(char *buf
)
4998 while ((cmd
= next_cmd(&buf
))) {
4999 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
5000 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
5005 res
= issue_thinkpad_cmos_command(cmos_cmd
);
5013 static struct ibm_struct cmos_driver_data
= {
5016 .write
= cmos_write
,
5020 /*************************************************************************
5024 enum led_access_mode
{
5025 TPACPI_LED_NONE
= 0,
5026 TPACPI_LED_570
, /* 570 */
5027 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5028 TPACPI_LED_NEW
, /* all others */
5031 enum { /* For TPACPI_LED_OLD */
5032 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
5033 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
5034 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
5037 static enum led_access_mode led_supported
;
5039 static acpi_handle led_handle
;
5041 #define TPACPI_LED_NUMLEDS 16
5042 static struct tpacpi_led_classdev
*tpacpi_leds
;
5043 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
5044 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
5045 /* there's a limit of 19 chars + NULL before 2.6.26 */
5047 "tpacpi:orange:batt",
5048 "tpacpi:green:batt",
5049 "tpacpi::dock_active",
5050 "tpacpi::bay_active",
5051 "tpacpi::dock_batt",
5052 "tpacpi::unknown_led",
5054 "tpacpi::dock_status1",
5055 "tpacpi::dock_status2",
5056 "tpacpi::unknown_led2",
5057 "tpacpi::unknown_led3",
5058 "tpacpi::thinkvantage",
5060 #define TPACPI_SAFE_LEDS 0x1081U
5062 static inline bool tpacpi_is_led_restricted(const unsigned int led
)
5064 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5067 return (1U & (TPACPI_SAFE_LEDS
>> led
)) == 0;
5071 static int led_get_status(const unsigned int led
)
5074 enum led_status_t led_s
;
5076 switch (led_supported
) {
5077 case TPACPI_LED_570
:
5078 if (!acpi_evalf(ec_handle
,
5079 &status
, "GLED", "dd", 1 << led
))
5081 led_s
= (status
== 0)?
5086 tpacpi_led_state_cache
[led
] = led_s
;
5095 static int led_set_status(const unsigned int led
,
5096 const enum led_status_t ledstatus
)
5098 /* off, on, blink. Index is led_status_t */
5099 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
5100 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
5104 switch (led_supported
) {
5105 case TPACPI_LED_570
:
5107 if (unlikely(led
> 7))
5109 if (unlikely(tpacpi_is_led_restricted(led
)))
5111 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5112 (1 << led
), led_sled_arg1
[ledstatus
]))
5115 case TPACPI_LED_OLD
:
5116 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
5117 if (unlikely(led
> 7))
5119 if (unlikely(tpacpi_is_led_restricted(led
)))
5121 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
5123 rc
= ec_write(TPACPI_LED_EC_HLBL
,
5124 (ledstatus
== TPACPI_LED_BLINK
) << led
);
5126 rc
= ec_write(TPACPI_LED_EC_HLCL
,
5127 (ledstatus
!= TPACPI_LED_OFF
) << led
);
5129 case TPACPI_LED_NEW
:
5131 if (unlikely(led
>= TPACPI_LED_NUMLEDS
))
5133 if (unlikely(tpacpi_is_led_restricted(led
)))
5135 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5136 led
, led_led_arg1
[ledstatus
]))
5144 tpacpi_led_state_cache
[led
] = ledstatus
;
5149 static void led_set_status_worker(struct work_struct
*work
)
5151 struct tpacpi_led_classdev
*data
=
5152 container_of(work
, struct tpacpi_led_classdev
, work
);
5154 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
5155 led_set_status(data
->led
, data
->new_state
);
5158 static void led_sysfs_set(struct led_classdev
*led_cdev
,
5159 enum led_brightness brightness
)
5161 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5162 struct tpacpi_led_classdev
, led_classdev
);
5164 if (brightness
== LED_OFF
)
5165 data
->new_state
= TPACPI_LED_OFF
;
5166 else if (tpacpi_led_state_cache
[data
->led
] != TPACPI_LED_BLINK
)
5167 data
->new_state
= TPACPI_LED_ON
;
5169 data
->new_state
= TPACPI_LED_BLINK
;
5171 queue_work(tpacpi_wq
, &data
->work
);
5174 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
5175 unsigned long *delay_on
, unsigned long *delay_off
)
5177 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5178 struct tpacpi_led_classdev
, led_classdev
);
5180 /* Can we choose the flash rate? */
5181 if (*delay_on
== 0 && *delay_off
== 0) {
5182 /* yes. set them to the hardware blink rate (1 Hz) */
5183 *delay_on
= 500; /* ms */
5184 *delay_off
= 500; /* ms */
5185 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
5188 data
->new_state
= TPACPI_LED_BLINK
;
5189 queue_work(tpacpi_wq
, &data
->work
);
5194 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
5198 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5199 struct tpacpi_led_classdev
, led_classdev
);
5201 rc
= led_get_status(data
->led
);
5203 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
5204 rc
= LED_OFF
; /* no error handling in led class :( */
5211 static void led_exit(void)
5215 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5216 if (tpacpi_leds
[i
].led_classdev
.name
)
5217 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
5220 flush_workqueue(tpacpi_wq
);
5224 static int __init
tpacpi_init_led(unsigned int led
)
5228 tpacpi_leds
[led
].led
= led
;
5230 /* LEDs with no name don't get registered */
5231 if (!tpacpi_led_names
[led
])
5234 tpacpi_leds
[led
].led_classdev
.brightness_set
= &led_sysfs_set
;
5235 tpacpi_leds
[led
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
5236 if (led_supported
== TPACPI_LED_570
)
5237 tpacpi_leds
[led
].led_classdev
.brightness_get
=
5240 tpacpi_leds
[led
].led_classdev
.name
= tpacpi_led_names
[led
];
5242 INIT_WORK(&tpacpi_leds
[led
].work
, led_set_status_worker
);
5244 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
5245 &tpacpi_leds
[led
].led_classdev
);
5247 tpacpi_leds
[led
].led_classdev
.name
= NULL
;
5252 static const struct tpacpi_quirk led_useful_qtable
[] __initconst
= {
5253 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5254 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5255 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5257 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5258 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5259 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5260 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5261 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5262 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5263 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5264 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5266 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5267 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5268 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5269 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5270 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5272 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5273 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5274 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5275 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5277 /* (1) - may have excess leds enabled on MSB */
5279 /* Defaults (order matters, keep last, don't reorder!) */
5281 .vendor
= PCI_VENDOR_ID_LENOVO
,
5282 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5285 { /* IBM ThinkPads with no EC version string */
5286 .vendor
= PCI_VENDOR_ID_IBM
,
5287 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_UNKNOWN
,
5290 { /* IBM ThinkPads with EC version string */
5291 .vendor
= PCI_VENDOR_ID_IBM
,
5292 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5297 #undef TPACPI_LEDQ_IBM
5298 #undef TPACPI_LEDQ_LNV
5300 static enum led_access_mode __init
led_init_detect_mode(void)
5304 if (tpacpi_is_ibm()) {
5306 status
= acpi_get_handle(ec_handle
, "SLED", &led_handle
);
5307 if (ACPI_SUCCESS(status
))
5308 return TPACPI_LED_570
;
5310 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5311 status
= acpi_get_handle(ec_handle
, "SYSL", &led_handle
);
5312 if (ACPI_SUCCESS(status
))
5313 return TPACPI_LED_OLD
;
5317 status
= acpi_get_handle(ec_handle
, "LED", &led_handle
);
5318 if (ACPI_SUCCESS(status
))
5319 return TPACPI_LED_NEW
;
5321 /* R30, R31, and unknown firmwares */
5323 return TPACPI_LED_NONE
;
5326 static int __init
led_init(struct ibm_init_struct
*iibm
)
5330 unsigned long useful_leds
;
5332 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
5334 led_supported
= led_init_detect_mode();
5336 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
5337 str_supported(led_supported
), led_supported
);
5339 if (led_supported
== TPACPI_LED_NONE
)
5342 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
5345 pr_err("Out of memory for LED data\n");
5349 useful_leds
= tpacpi_check_quirks(led_useful_qtable
,
5350 ARRAY_SIZE(led_useful_qtable
));
5352 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5353 if (!tpacpi_is_led_restricted(i
) &&
5354 test_bit(i
, &useful_leds
)) {
5355 rc
= tpacpi_init_led(i
);
5363 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5364 pr_notice("warning: userspace override of important "
5365 "firmware LEDs is enabled\n");
5370 #define str_led_status(s) \
5371 ((s) == TPACPI_LED_OFF ? "off" : \
5372 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5374 static int led_read(struct seq_file
*m
)
5376 if (!led_supported
) {
5377 seq_printf(m
, "status:\t\tnot supported\n");
5380 seq_printf(m
, "status:\t\tsupported\n");
5382 if (led_supported
== TPACPI_LED_570
) {
5385 for (i
= 0; i
< 8; i
++) {
5386 status
= led_get_status(i
);
5389 seq_printf(m
, "%d:\t\t%s\n",
5390 i
, str_led_status(status
));
5394 seq_printf(m
, "commands:\t"
5395 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5400 static int led_write(char *buf
)
5404 enum led_status_t s
;
5409 while ((cmd
= next_cmd(&buf
))) {
5410 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 15)
5413 if (strstr(cmd
, "off")) {
5415 } else if (strstr(cmd
, "on")) {
5417 } else if (strstr(cmd
, "blink")) {
5418 s
= TPACPI_LED_BLINK
;
5423 rc
= led_set_status(led
, s
);
5431 static struct ibm_struct led_driver_data
= {
5438 /*************************************************************************
5442 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
5444 #define TPACPI_BEEP_Q1 0x0001
5446 static const struct tpacpi_quirk beep_quirk_table
[] __initconst
= {
5447 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1
), /* 570 */
5448 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1
), /* 570E - unverified */
5451 static int __init
beep_init(struct ibm_init_struct
*iibm
)
5453 unsigned long quirks
;
5455 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
5457 TPACPI_ACPIHANDLE_INIT(beep
);
5459 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
5460 str_supported(beep_handle
!= NULL
));
5462 quirks
= tpacpi_check_quirks(beep_quirk_table
,
5463 ARRAY_SIZE(beep_quirk_table
));
5465 tp_features
.beep_needs_two_args
= !!(quirks
& TPACPI_BEEP_Q1
);
5467 return (beep_handle
)? 0 : 1;
5470 static int beep_read(struct seq_file
*m
)
5473 seq_printf(m
, "status:\t\tnot supported\n");
5475 seq_printf(m
, "status:\t\tsupported\n");
5476 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-17)\n");
5482 static int beep_write(char *buf
)
5490 while ((cmd
= next_cmd(&buf
))) {
5491 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
5492 beep_cmd
>= 0 && beep_cmd
<= 17) {
5496 if (tp_features
.beep_needs_two_args
) {
5497 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd",
5501 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vd",
5510 static struct ibm_struct beep_driver_data
= {
5513 .write
= beep_write
,
5516 /*************************************************************************
5520 enum thermal_access_mode
{
5521 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
5522 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
5523 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
5524 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
5525 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
5528 enum { /* TPACPI_THERMAL_TPEC_* */
5529 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
5530 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
5531 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
5533 TPACPI_THERMAL_SENSOR_NA
= -128000, /* Sensor not available */
5537 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5538 struct ibm_thermal_sensors_struct
{
5539 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
5542 static enum thermal_access_mode thermal_read_mode
;
5544 /* idx is zero-based */
5545 static int thermal_get_sensor(int idx
, s32
*value
)
5551 t
= TP_EC_THERMAL_TMP0
;
5553 switch (thermal_read_mode
) {
5554 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5555 case TPACPI_THERMAL_TPEC_16
:
5556 if (idx
>= 8 && idx
<= 15) {
5557 t
= TP_EC_THERMAL_TMP8
;
5562 case TPACPI_THERMAL_TPEC_8
:
5564 if (!acpi_ec_read(t
+ idx
, &tmp
))
5566 *value
= tmp
* 1000;
5571 case TPACPI_THERMAL_ACPI_UPDT
:
5573 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5574 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
5576 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5578 *value
= (t
- 2732) * 100;
5583 case TPACPI_THERMAL_ACPI_TMP07
:
5585 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5586 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5588 if (t
> 127 || t
< -127)
5589 t
= TP_EC_THERMAL_TMP_NA
;
5595 case TPACPI_THERMAL_NONE
:
5603 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5614 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5617 for (i
= 0 ; i
< n
; i
++) {
5618 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5626 static void thermal_dump_all_sensors(void)
5629 struct ibm_thermal_sensors_struct t
;
5631 n
= thermal_get_sensors(&t
);
5635 pr_notice("temperatures (Celsius):");
5637 for (i
= 0; i
< n
; i
++) {
5638 if (t
.temp
[i
] != TPACPI_THERMAL_SENSOR_NA
)
5639 pr_cont(" %d", (int)(t
.temp
[i
] / 1000));
5647 /* sysfs temp##_input -------------------------------------------------- */
5649 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5650 struct device_attribute
*attr
,
5653 struct sensor_device_attribute
*sensor_attr
=
5654 to_sensor_dev_attr(attr
);
5655 int idx
= sensor_attr
->index
;
5659 res
= thermal_get_sensor(idx
, &value
);
5662 if (value
== TPACPI_THERMAL_SENSOR_NA
)
5665 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5668 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5669 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5670 thermal_temp_input_show, NULL, _idxB)
5672 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5673 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5674 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5675 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5676 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5677 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5678 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5679 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5680 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5681 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5682 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5683 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5684 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5685 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5686 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5687 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5688 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5691 #define THERMAL_ATTRS(X) \
5692 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5694 static struct attribute
*thermal_temp_input_attr
[] = {
5714 static const struct attribute_group thermal_temp_input16_group
= {
5715 .attrs
= thermal_temp_input_attr
5718 static const struct attribute_group thermal_temp_input8_group
= {
5719 .attrs
= &thermal_temp_input_attr
[8]
5722 #undef THERMAL_SENSOR_ATTR_TEMP
5723 #undef THERMAL_ATTRS
5725 /* --------------------------------------------------------------------- */
5727 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5734 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5736 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5738 if (thinkpad_id
.ec_model
) {
5740 * Direct EC access mode: sensors at registers
5741 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5742 * non-implemented, thermal sensors return 0x80 when
5747 for (i
= 0; i
< 8; i
++) {
5748 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5754 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5762 /* This is sheer paranoia, but we handle it anyway */
5764 pr_err("ThinkPad ACPI EC access misbehaving, "
5765 "falling back to ACPI TMPx access "
5767 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5769 pr_err("ThinkPad ACPI EC access misbehaving, "
5770 "disabling thermal sensors access\n");
5771 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5776 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5778 } else if (acpi_tmp7
) {
5779 if (tpacpi_is_ibm() &&
5780 acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5781 /* 600e/x, 770e, 770x */
5782 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5784 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
5785 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5788 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5789 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5792 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5793 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5796 switch (thermal_read_mode
) {
5797 case TPACPI_THERMAL_TPEC_16
:
5798 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5799 &thermal_temp_input16_group
);
5803 case TPACPI_THERMAL_TPEC_8
:
5804 case TPACPI_THERMAL_ACPI_TMP07
:
5805 case TPACPI_THERMAL_ACPI_UPDT
:
5806 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5807 &thermal_temp_input8_group
);
5811 case TPACPI_THERMAL_NONE
:
5819 static void thermal_exit(void)
5821 switch (thermal_read_mode
) {
5822 case TPACPI_THERMAL_TPEC_16
:
5823 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5824 &thermal_temp_input16_group
);
5826 case TPACPI_THERMAL_TPEC_8
:
5827 case TPACPI_THERMAL_ACPI_TMP07
:
5828 case TPACPI_THERMAL_ACPI_UPDT
:
5829 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5830 &thermal_temp_input8_group
);
5832 case TPACPI_THERMAL_NONE
:
5838 static int thermal_read(struct seq_file
*m
)
5841 struct ibm_thermal_sensors_struct t
;
5843 n
= thermal_get_sensors(&t
);
5844 if (unlikely(n
< 0))
5847 seq_printf(m
, "temperatures:\t");
5850 for (i
= 0; i
< (n
- 1); i
++)
5851 seq_printf(m
, "%d ", t
.temp
[i
] / 1000);
5852 seq_printf(m
, "%d\n", t
.temp
[i
] / 1000);
5854 seq_printf(m
, "not supported\n");
5859 static struct ibm_struct thermal_driver_data
= {
5861 .read
= thermal_read
,
5862 .exit
= thermal_exit
,
5865 /*************************************************************************
5866 * Backlight/brightness subdriver
5869 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5872 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5873 * CMOS NVRAM byte 0x5E, bits 0-3.
5875 * EC HBRV (0x31) has the following layout
5876 * Bit 7: unknown function
5877 * Bit 6: unknown function
5878 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5879 * Bit 4: must be set to zero to avoid problems
5880 * Bit 3-0: backlight brightness level
5882 * brightness_get_raw returns status data in the HBRV layout
5884 * WARNING: The X61 has been verified to use HBRV for something else, so
5885 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5886 * testing on the very early *60 Lenovo models...
5890 TP_EC_BACKLIGHT
= 0x31,
5892 /* TP_EC_BACKLIGHT bitmasks */
5893 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5894 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5895 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5898 enum tpacpi_brightness_access_mode
{
5899 TPACPI_BRGHT_MODE_AUTO
= 0, /* Not implemented yet */
5900 TPACPI_BRGHT_MODE_EC
, /* EC control */
5901 TPACPI_BRGHT_MODE_UCMS_STEP
, /* UCMS step-based control */
5902 TPACPI_BRGHT_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
5903 TPACPI_BRGHT_MODE_MAX
5906 static struct backlight_device
*ibm_backlight_device
;
5908 static enum tpacpi_brightness_access_mode brightness_mode
=
5909 TPACPI_BRGHT_MODE_MAX
;
5911 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5913 static struct mutex brightness_mutex
;
5915 /* NVRAM brightness access,
5916 * call with brightness_mutex held! */
5917 static unsigned int tpacpi_brightness_nvram_get(void)
5921 lnvram
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5922 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5923 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5924 lnvram
&= bright_maxlvl
;
5929 static void tpacpi_brightness_checkpoint_nvram(void)
5934 if (brightness_mode
!= TPACPI_BRGHT_MODE_ECNVRAM
)
5937 vdbg_printk(TPACPI_DBG_BRGHT
,
5938 "trying to checkpoint backlight level to NVRAM...\n");
5940 if (mutex_lock_killable(&brightness_mutex
) < 0)
5943 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5945 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5946 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
5948 if (lec
!= ((b_nvram
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5949 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
)) {
5950 /* NVRAM needs update */
5951 b_nvram
&= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS
<<
5952 TP_NVRAM_POS_LEVEL_BRIGHTNESS
);
5954 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_BRIGHTNESS
);
5955 dbg_printk(TPACPI_DBG_BRGHT
,
5956 "updated NVRAM backlight level to %u (0x%02x)\n",
5957 (unsigned int) lec
, (unsigned int) b_nvram
);
5959 vdbg_printk(TPACPI_DBG_BRGHT
,
5960 "NVRAM backlight level already is %u (0x%02x)\n",
5961 (unsigned int) lec
, (unsigned int) b_nvram
);
5964 mutex_unlock(&brightness_mutex
);
5968 /* call with brightness_mutex held! */
5969 static int tpacpi_brightness_get_raw(int *status
)
5973 switch (brightness_mode
) {
5974 case TPACPI_BRGHT_MODE_UCMS_STEP
:
5975 *status
= tpacpi_brightness_nvram_get();
5977 case TPACPI_BRGHT_MODE_EC
:
5978 case TPACPI_BRGHT_MODE_ECNVRAM
:
5979 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5988 /* call with brightness_mutex held! */
5989 /* do NOT call with illegal backlight level value */
5990 static int tpacpi_brightness_set_ec(unsigned int value
)
5994 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5997 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT
,
5998 (lec
& TP_EC_BACKLIGHT_CMDMSK
) |
5999 (value
& TP_EC_BACKLIGHT_LVLMSK
))))
6005 /* call with brightness_mutex held! */
6006 static int tpacpi_brightness_set_ucmsstep(unsigned int value
)
6009 unsigned int current_value
, i
;
6011 current_value
= tpacpi_brightness_nvram_get();
6013 if (value
== current_value
)
6016 cmos_cmd
= (value
> current_value
) ?
6017 TP_CMOS_BRIGHTNESS_UP
:
6018 TP_CMOS_BRIGHTNESS_DOWN
;
6019 inc
= (value
> current_value
) ? 1 : -1;
6021 for (i
= current_value
; i
!= value
; i
+= inc
)
6022 if (issue_thinkpad_cmos_command(cmos_cmd
))
6028 /* May return EINTR which can always be mapped to ERESTARTSYS */
6029 static int brightness_set(unsigned int value
)
6033 if (value
> bright_maxlvl
|| value
< 0)
6036 vdbg_printk(TPACPI_DBG_BRGHT
,
6037 "set backlight level to %d\n", value
);
6039 res
= mutex_lock_killable(&brightness_mutex
);
6043 switch (brightness_mode
) {
6044 case TPACPI_BRGHT_MODE_EC
:
6045 case TPACPI_BRGHT_MODE_ECNVRAM
:
6046 res
= tpacpi_brightness_set_ec(value
);
6048 case TPACPI_BRGHT_MODE_UCMS_STEP
:
6049 res
= tpacpi_brightness_set_ucmsstep(value
);
6055 mutex_unlock(&brightness_mutex
);
6059 /* sysfs backlight class ----------------------------------------------- */
6061 static int brightness_update_status(struct backlight_device
*bd
)
6063 unsigned int level
=
6064 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
6065 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
6066 bd
->props
.brightness
: 0;
6068 dbg_printk(TPACPI_DBG_BRGHT
,
6069 "backlight: attempt to set level to %d\n",
6072 /* it is the backlight class's job (caller) to handle
6073 * EINTR and other errors properly */
6074 return brightness_set(level
);
6077 static int brightness_get(struct backlight_device
*bd
)
6081 res
= mutex_lock_killable(&brightness_mutex
);
6085 res
= tpacpi_brightness_get_raw(&status
);
6087 mutex_unlock(&brightness_mutex
);
6092 return status
& TP_EC_BACKLIGHT_LVLMSK
;
6095 static void tpacpi_brightness_notify_change(void)
6097 backlight_force_update(ibm_backlight_device
,
6098 BACKLIGHT_UPDATE_HOTKEY
);
6101 static const struct backlight_ops ibm_backlight_data
= {
6102 .get_brightness
= brightness_get
,
6103 .update_status
= brightness_update_status
,
6106 /* --------------------------------------------------------------------- */
6109 * Call _BCL method of video device. On some ThinkPads this will
6110 * switch the firmware to the ACPI brightness control mode.
6113 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
6115 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
6116 union acpi_object
*obj
;
6119 if (ACPI_SUCCESS(acpi_evaluate_object(handle
, "_BCL", NULL
, &buffer
))) {
6120 obj
= (union acpi_object
*)buffer
.pointer
;
6121 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
6122 pr_err("Unknown _BCL data, please report this to %s\n",
6126 rc
= obj
->package
.count
;
6132 kfree(buffer
.pointer
);
6138 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6140 static unsigned int __init
tpacpi_check_std_acpi_brightness_support(void)
6142 acpi_handle video_device
;
6145 tpacpi_acpi_handle_locate("video", ACPI_VIDEO_HID
, &video_device
);
6147 bcl_levels
= tpacpi_query_bcl_levels(video_device
);
6149 tp_features
.bright_acpimode
= (bcl_levels
> 0);
6151 return (bcl_levels
> 2) ? (bcl_levels
- 2) : 0;
6155 * These are only useful for models that have only one possibility
6156 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6159 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6160 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6161 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6163 static const struct tpacpi_quirk brightness_quirk_table
[] __initconst
= {
6164 /* Models with ATI GPUs known to require ECNVRAM mode */
6165 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC
), /* T43/p ATI */
6167 /* Models with ATI GPUs that can use ECNVRAM */
6168 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC
), /* R50,51 T40-42 */
6169 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6170 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC
), /* R52 */
6171 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6173 /* Models with Intel Extreme Graphics 2 */
6174 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC
), /* X40 */
6175 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6176 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6178 /* Models with Intel GMA900 */
6179 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC
), /* T43, R52 */
6180 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC
), /* X41 */
6181 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC
), /* X41 Tablet */
6185 * Returns < 0 for error, otherwise sets tp_features.bright_*
6186 * and bright_maxlvl.
6188 static void __init
tpacpi_detect_brightness_capabilities(void)
6192 vdbg_printk(TPACPI_DBG_INIT
,
6193 "detecting firmware brightness interface capabilities\n");
6195 /* we could run a quirks check here (same table used by
6196 * brightness_init) if needed */
6199 * We always attempt to detect acpi support, so as to switch
6200 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6201 * going to publish a backlight interface
6203 b
= tpacpi_check_std_acpi_brightness_support();
6207 pr_info("detected a 16-level brightness capable ThinkPad\n");
6212 pr_info("detected a 8-level brightness capable ThinkPad\n");
6215 pr_err("Unsupported brightness interface, "
6216 "please contact %s\n", TPACPI_MAIL
);
6217 tp_features
.bright_unkfw
= 1;
6218 bright_maxlvl
= b
- 1;
6222 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
6224 struct backlight_properties props
;
6226 unsigned long quirks
;
6228 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
6230 mutex_init(&brightness_mutex
);
6232 quirks
= tpacpi_check_quirks(brightness_quirk_table
,
6233 ARRAY_SIZE(brightness_quirk_table
));
6235 /* tpacpi_detect_brightness_capabilities() must have run already */
6237 /* if it is unknown, we don't handle it: it wouldn't be safe */
6238 if (tp_features
.bright_unkfw
)
6241 if (!brightness_enable
) {
6242 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6243 "brightness support disabled by "
6244 "module parameter\n");
6248 if (acpi_video_backlight_support()) {
6249 if (brightness_enable
> 1) {
6250 pr_info("Standard ACPI backlight interface "
6251 "available, not loading native one\n");
6253 } else if (brightness_enable
== 1) {
6254 pr_warn("Cannot enable backlight brightness support, "
6255 "ACPI is already handling it. Refer to the "
6256 "acpi_backlight kernel parameter.\n");
6259 } else if (tp_features
.bright_acpimode
&& brightness_enable
> 1) {
6260 pr_notice("Standard ACPI backlight interface not "
6261 "available, thinkpad_acpi native "
6262 "brightness control enabled\n");
6266 * Check for module parameter bogosity, note that we
6267 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6268 * able to detect "unspecified"
6270 if (brightness_mode
> TPACPI_BRGHT_MODE_MAX
)
6273 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6274 if (brightness_mode
== TPACPI_BRGHT_MODE_AUTO
||
6275 brightness_mode
== TPACPI_BRGHT_MODE_MAX
) {
6276 if (quirks
& TPACPI_BRGHT_Q_EC
)
6277 brightness_mode
= TPACPI_BRGHT_MODE_ECNVRAM
;
6279 brightness_mode
= TPACPI_BRGHT_MODE_UCMS_STEP
;
6281 dbg_printk(TPACPI_DBG_BRGHT
,
6282 "driver auto-selected brightness_mode=%d\n",
6287 if (!tpacpi_is_ibm() &&
6288 (brightness_mode
== TPACPI_BRGHT_MODE_ECNVRAM
||
6289 brightness_mode
== TPACPI_BRGHT_MODE_EC
))
6292 if (tpacpi_brightness_get_raw(&b
) < 0)
6295 memset(&props
, 0, sizeof(struct backlight_properties
));
6296 props
.type
= BACKLIGHT_PLATFORM
;
6297 props
.max_brightness
= bright_maxlvl
;
6298 props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
6299 ibm_backlight_device
= backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME
,
6301 &ibm_backlight_data
,
6303 if (IS_ERR(ibm_backlight_device
)) {
6304 int rc
= PTR_ERR(ibm_backlight_device
);
6305 ibm_backlight_device
= NULL
;
6306 pr_err("Could not register backlight device\n");
6309 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6310 "brightness is supported\n");
6312 if (quirks
& TPACPI_BRGHT_Q_ASK
) {
6313 pr_notice("brightness: will use unverified default: "
6314 "brightness_mode=%d\n", brightness_mode
);
6315 pr_notice("brightness: please report to %s whether it works well "
6316 "or not on your ThinkPad\n", TPACPI_MAIL
);
6319 /* Added by mistake in early 2007. Probably useless, but it could
6320 * be working around some unknown firmware problem where the value
6321 * read at startup doesn't match the real hardware state... so leave
6322 * it in place just in case */
6323 backlight_update_status(ibm_backlight_device
);
6325 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6326 "brightness: registering brightness hotkeys "
6327 "as change notification\n");
6328 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6329 | TP_ACPI_HKEY_BRGHTUP_MASK
6330 | TP_ACPI_HKEY_BRGHTDWN_MASK
);
6334 static void brightness_suspend(void)
6336 tpacpi_brightness_checkpoint_nvram();
6339 static void brightness_shutdown(void)
6341 tpacpi_brightness_checkpoint_nvram();
6344 static void brightness_exit(void)
6346 if (ibm_backlight_device
) {
6347 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_BRGHT
,
6348 "calling backlight_device_unregister()\n");
6349 backlight_device_unregister(ibm_backlight_device
);
6352 tpacpi_brightness_checkpoint_nvram();
6355 static int brightness_read(struct seq_file
*m
)
6359 level
= brightness_get(NULL
);
6361 seq_printf(m
, "level:\t\tunreadable\n");
6363 seq_printf(m
, "level:\t\t%d\n", level
);
6364 seq_printf(m
, "commands:\tup, down\n");
6365 seq_printf(m
, "commands:\tlevel <level> (<level> is 0-%d)\n",
6372 static int brightness_write(char *buf
)
6378 level
= brightness_get(NULL
);
6382 while ((cmd
= next_cmd(&buf
))) {
6383 if (strlencmp(cmd
, "up") == 0) {
6384 if (level
< bright_maxlvl
)
6386 } else if (strlencmp(cmd
, "down") == 0) {
6389 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
6390 level
>= 0 && level
<= bright_maxlvl
) {
6396 tpacpi_disclose_usertask("procfs brightness",
6397 "set level to %d\n", level
);
6400 * Now we know what the final level should be, so we try to set it.
6401 * Doing it this way makes the syscall restartable in case of EINTR
6403 rc
= brightness_set(level
);
6404 if (!rc
&& ibm_backlight_device
)
6405 backlight_force_update(ibm_backlight_device
,
6406 BACKLIGHT_UPDATE_SYSFS
);
6407 return (rc
== -EINTR
)? -ERESTARTSYS
: rc
;
6410 static struct ibm_struct brightness_driver_data
= {
6411 .name
= "brightness",
6412 .read
= brightness_read
,
6413 .write
= brightness_write
,
6414 .exit
= brightness_exit
,
6415 .suspend
= brightness_suspend
,
6416 .shutdown
= brightness_shutdown
,
6419 /*************************************************************************
6424 * IBM ThinkPads have a simple volume controller with MUTE gating.
6425 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6427 * Since the *61 series (and probably also the later *60 series), Lenovo
6428 * ThinkPads only implement the MUTE gate.
6431 * Bit 6: MUTE (1 mutes sound)
6433 * Other bits should be zero as far as we know.
6435 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6436 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6437 * such as bit 7 which is used to detect repeated presses of MUTE,
6438 * and we leave them unchanged.
6441 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6443 #define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6444 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6445 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6447 static int alsa_index
= ~((1 << (SNDRV_CARDS
- 3)) - 1); /* last three slots */
6448 static char *alsa_id
= "ThinkPadEC";
6449 static bool alsa_enable
= SNDRV_DEFAULT_ENABLE1
;
6451 struct tpacpi_alsa_data
{
6452 struct snd_card
*card
;
6453 struct snd_ctl_elem_id
*ctl_mute_id
;
6454 struct snd_ctl_elem_id
*ctl_vol_id
;
6457 static struct snd_card
*alsa_card
;
6462 /* TP_EC_AUDIO bits */
6463 TP_EC_AUDIO_MUTESW
= 6,
6465 /* TP_EC_AUDIO bitmasks */
6466 TP_EC_AUDIO_LVL_MSK
= 0x0F,
6467 TP_EC_AUDIO_MUTESW_MSK
= (1 << TP_EC_AUDIO_MUTESW
),
6469 /* Maximum volume */
6470 TP_EC_VOLUME_MAX
= 14,
6473 enum tpacpi_volume_access_mode
{
6474 TPACPI_VOL_MODE_AUTO
= 0, /* Not implemented yet */
6475 TPACPI_VOL_MODE_EC
, /* Pure EC control */
6476 TPACPI_VOL_MODE_UCMS_STEP
, /* UCMS step-based control: N/A */
6477 TPACPI_VOL_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
6481 enum tpacpi_volume_capabilities
{
6482 TPACPI_VOL_CAP_AUTO
= 0, /* Use white/blacklist */
6483 TPACPI_VOL_CAP_VOLMUTE
, /* Output vol and mute */
6484 TPACPI_VOL_CAP_MUTEONLY
, /* Output mute only */
6488 static enum tpacpi_volume_access_mode volume_mode
=
6489 TPACPI_VOL_MODE_MAX
;
6491 static enum tpacpi_volume_capabilities volume_capabilities
;
6492 static bool volume_control_allowed
;
6495 * Used to syncronize writers to TP_EC_AUDIO and
6496 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6498 static struct mutex volume_mutex
;
6500 static void tpacpi_volume_checkpoint_nvram(void)
6506 if (volume_mode
!= TPACPI_VOL_MODE_ECNVRAM
)
6508 if (!volume_control_allowed
)
6511 vdbg_printk(TPACPI_DBG_MIXER
,
6512 "trying to checkpoint mixer state to NVRAM...\n");
6514 if (tp_features
.mixer_no_level_control
)
6515 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
;
6517 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
| TP_EC_AUDIO_LVL_MSK
;
6519 if (mutex_lock_killable(&volume_mutex
) < 0)
6522 if (unlikely(!acpi_ec_read(TP_EC_AUDIO
, &lec
)))
6525 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
6527 if (lec
!= (b_nvram
& ec_mask
)) {
6528 /* NVRAM needs update */
6529 b_nvram
&= ~ec_mask
;
6531 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_MIXER
);
6532 dbg_printk(TPACPI_DBG_MIXER
,
6533 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6534 (unsigned int) lec
, (unsigned int) b_nvram
);
6536 vdbg_printk(TPACPI_DBG_MIXER
,
6537 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6538 (unsigned int) lec
, (unsigned int) b_nvram
);
6542 mutex_unlock(&volume_mutex
);
6545 static int volume_get_status_ec(u8
*status
)
6549 if (!acpi_ec_read(TP_EC_AUDIO
, &s
))
6554 dbg_printk(TPACPI_DBG_MIXER
, "status 0x%02x\n", s
);
6559 static int volume_get_status(u8
*status
)
6561 return volume_get_status_ec(status
);
6564 static int volume_set_status_ec(const u8 status
)
6566 if (!acpi_ec_write(TP_EC_AUDIO
, status
))
6569 dbg_printk(TPACPI_DBG_MIXER
, "set EC mixer to 0x%02x\n", status
);
6574 static int volume_set_status(const u8 status
)
6576 return volume_set_status_ec(status
);
6579 /* returns < 0 on error, 0 on no change, 1 on change */
6580 static int __volume_set_mute_ec(const bool mute
)
6585 if (mutex_lock_killable(&volume_mutex
) < 0)
6588 rc
= volume_get_status_ec(&s
);
6592 n
= (mute
) ? s
| TP_EC_AUDIO_MUTESW_MSK
:
6593 s
& ~TP_EC_AUDIO_MUTESW_MSK
;
6596 rc
= volume_set_status_ec(n
);
6602 mutex_unlock(&volume_mutex
);
6606 static int volume_alsa_set_mute(const bool mute
)
6608 dbg_printk(TPACPI_DBG_MIXER
, "ALSA: trying to %smute\n",
6609 (mute
) ? "" : "un");
6610 return __volume_set_mute_ec(mute
);
6613 static int volume_set_mute(const bool mute
)
6617 dbg_printk(TPACPI_DBG_MIXER
, "trying to %smute\n",
6618 (mute
) ? "" : "un");
6620 rc
= __volume_set_mute_ec(mute
);
6621 return (rc
< 0) ? rc
: 0;
6624 /* returns < 0 on error, 0 on no change, 1 on change */
6625 static int __volume_set_volume_ec(const u8 vol
)
6630 if (vol
> TP_EC_VOLUME_MAX
)
6633 if (mutex_lock_killable(&volume_mutex
) < 0)
6636 rc
= volume_get_status_ec(&s
);
6640 n
= (s
& ~TP_EC_AUDIO_LVL_MSK
) | vol
;
6643 rc
= volume_set_status_ec(n
);
6649 mutex_unlock(&volume_mutex
);
6653 static int volume_alsa_set_volume(const u8 vol
)
6655 dbg_printk(TPACPI_DBG_MIXER
,
6656 "ALSA: trying to set volume level to %hu\n", vol
);
6657 return __volume_set_volume_ec(vol
);
6660 static void volume_alsa_notify_change(void)
6662 struct tpacpi_alsa_data
*d
;
6664 if (alsa_card
&& alsa_card
->private_data
) {
6665 d
= alsa_card
->private_data
;
6667 snd_ctl_notify(alsa_card
,
6668 SNDRV_CTL_EVENT_MASK_VALUE
,
6671 snd_ctl_notify(alsa_card
,
6672 SNDRV_CTL_EVENT_MASK_VALUE
,
6677 static int volume_alsa_vol_info(struct snd_kcontrol
*kcontrol
,
6678 struct snd_ctl_elem_info
*uinfo
)
6680 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
6682 uinfo
->value
.integer
.min
= 0;
6683 uinfo
->value
.integer
.max
= TP_EC_VOLUME_MAX
;
6687 static int volume_alsa_vol_get(struct snd_kcontrol
*kcontrol
,
6688 struct snd_ctl_elem_value
*ucontrol
)
6693 rc
= volume_get_status(&s
);
6697 ucontrol
->value
.integer
.value
[0] = s
& TP_EC_AUDIO_LVL_MSK
;
6701 static int volume_alsa_vol_put(struct snd_kcontrol
*kcontrol
,
6702 struct snd_ctl_elem_value
*ucontrol
)
6704 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6705 ucontrol
->value
.integer
.value
[0]);
6706 return volume_alsa_set_volume(ucontrol
->value
.integer
.value
[0]);
6709 #define volume_alsa_mute_info snd_ctl_boolean_mono_info
6711 static int volume_alsa_mute_get(struct snd_kcontrol
*kcontrol
,
6712 struct snd_ctl_elem_value
*ucontrol
)
6717 rc
= volume_get_status(&s
);
6721 ucontrol
->value
.integer
.value
[0] =
6722 (s
& TP_EC_AUDIO_MUTESW_MSK
) ? 0 : 1;
6726 static int volume_alsa_mute_put(struct snd_kcontrol
*kcontrol
,
6727 struct snd_ctl_elem_value
*ucontrol
)
6729 tpacpi_disclose_usertask("ALSA", "%smute\n",
6730 ucontrol
->value
.integer
.value
[0] ?
6732 return volume_alsa_set_mute(!ucontrol
->value
.integer
.value
[0]);
6735 static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata
= {
6736 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6737 .name
= "Console Playback Volume",
6739 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6740 .info
= volume_alsa_vol_info
,
6741 .get
= volume_alsa_vol_get
,
6744 static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata
= {
6745 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6746 .name
= "Console Playback Switch",
6748 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6749 .info
= volume_alsa_mute_info
,
6750 .get
= volume_alsa_mute_get
,
6753 static void volume_suspend(void)
6755 tpacpi_volume_checkpoint_nvram();
6758 static void volume_resume(void)
6760 volume_alsa_notify_change();
6763 static void volume_shutdown(void)
6765 tpacpi_volume_checkpoint_nvram();
6768 static void volume_exit(void)
6771 snd_card_free(alsa_card
);
6775 tpacpi_volume_checkpoint_nvram();
6778 static int __init
volume_create_alsa_mixer(void)
6780 struct snd_card
*card
;
6781 struct tpacpi_alsa_data
*data
;
6782 struct snd_kcontrol
*ctl_vol
;
6783 struct snd_kcontrol
*ctl_mute
;
6786 rc
= snd_card_create(alsa_index
, alsa_id
, THIS_MODULE
,
6787 sizeof(struct tpacpi_alsa_data
), &card
);
6788 if (rc
< 0 || !card
) {
6789 pr_err("Failed to create ALSA card structures: %d\n", rc
);
6793 BUG_ON(!card
->private_data
);
6794 data
= card
->private_data
;
6797 strlcpy(card
->driver
, TPACPI_ALSA_DRVNAME
,
6798 sizeof(card
->driver
));
6799 strlcpy(card
->shortname
, TPACPI_ALSA_SHRTNAME
,
6800 sizeof(card
->shortname
));
6801 snprintf(card
->mixername
, sizeof(card
->mixername
), "ThinkPad EC %s",
6802 (thinkpad_id
.ec_version_str
) ?
6803 thinkpad_id
.ec_version_str
: "(unknown)");
6804 snprintf(card
->longname
, sizeof(card
->longname
),
6805 "%s at EC reg 0x%02x, fw %s", card
->shortname
, TP_EC_AUDIO
,
6806 (thinkpad_id
.ec_version_str
) ?
6807 thinkpad_id
.ec_version_str
: "unknown");
6809 if (volume_control_allowed
) {
6810 volume_alsa_control_vol
.put
= volume_alsa_vol_put
;
6811 volume_alsa_control_vol
.access
=
6812 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6814 volume_alsa_control_mute
.put
= volume_alsa_mute_put
;
6815 volume_alsa_control_mute
.access
=
6816 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6819 if (!tp_features
.mixer_no_level_control
) {
6820 ctl_vol
= snd_ctl_new1(&volume_alsa_control_vol
, NULL
);
6821 rc
= snd_ctl_add(card
, ctl_vol
);
6823 pr_err("Failed to create ALSA volume control: %d\n",
6827 data
->ctl_vol_id
= &ctl_vol
->id
;
6830 ctl_mute
= snd_ctl_new1(&volume_alsa_control_mute
, NULL
);
6831 rc
= snd_ctl_add(card
, ctl_mute
);
6833 pr_err("Failed to create ALSA mute control: %d\n", rc
);
6836 data
->ctl_mute_id
= &ctl_mute
->id
;
6838 snd_card_set_dev(card
, &tpacpi_pdev
->dev
);
6839 rc
= snd_card_register(card
);
6841 pr_err("Failed to register ALSA card: %d\n", rc
);
6849 snd_card_free(card
);
6853 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6854 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6856 static const struct tpacpi_quirk volume_quirk_table
[] __initconst
= {
6857 /* Whitelist volume level on all IBM by default */
6858 { .vendor
= PCI_VENDOR_ID_IBM
,
6859 .bios
= TPACPI_MATCH_ANY
,
6860 .ec
= TPACPI_MATCH_ANY
,
6861 .quirks
= TPACPI_VOL_Q_LEVEL
},
6863 /* Lenovo models with volume control (needs confirmation) */
6864 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL
), /* R60/i */
6865 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL
), /* R60e/i */
6866 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL
), /* T60/p */
6867 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL
), /* X60/s */
6868 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL
), /* X60t */
6869 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL
), /* Z60 */
6870 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL
), /* Z61 */
6872 /* Whitelist mute-only on all Lenovo by default */
6873 { .vendor
= PCI_VENDOR_ID_LENOVO
,
6874 .bios
= TPACPI_MATCH_ANY
,
6875 .ec
= TPACPI_MATCH_ANY
,
6876 .quirks
= TPACPI_VOL_Q_MUTEONLY
}
6879 static int __init
volume_init(struct ibm_init_struct
*iibm
)
6881 unsigned long quirks
;
6884 vdbg_printk(TPACPI_DBG_INIT
, "initializing volume subdriver\n");
6886 mutex_init(&volume_mutex
);
6889 * Check for module parameter bogosity, note that we
6890 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6891 * able to detect "unspecified"
6893 if (volume_mode
> TPACPI_VOL_MODE_MAX
)
6896 if (volume_mode
== TPACPI_VOL_MODE_UCMS_STEP
) {
6897 pr_err("UCMS step volume mode not implemented, "
6898 "please contact %s\n", TPACPI_MAIL
);
6902 if (volume_capabilities
>= TPACPI_VOL_CAP_MAX
)
6906 * The ALSA mixer is our primary interface.
6907 * When disabled, don't install the subdriver at all
6910 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6911 "ALSA mixer disabled by parameter, "
6912 "not loading volume subdriver...\n");
6916 quirks
= tpacpi_check_quirks(volume_quirk_table
,
6917 ARRAY_SIZE(volume_quirk_table
));
6919 switch (volume_capabilities
) {
6920 case TPACPI_VOL_CAP_AUTO
:
6921 if (quirks
& TPACPI_VOL_Q_MUTEONLY
)
6922 tp_features
.mixer_no_level_control
= 1;
6923 else if (quirks
& TPACPI_VOL_Q_LEVEL
)
6924 tp_features
.mixer_no_level_control
= 0;
6926 return 1; /* no mixer */
6928 case TPACPI_VOL_CAP_VOLMUTE
:
6929 tp_features
.mixer_no_level_control
= 0;
6931 case TPACPI_VOL_CAP_MUTEONLY
:
6932 tp_features
.mixer_no_level_control
= 1;
6938 if (volume_capabilities
!= TPACPI_VOL_CAP_AUTO
)
6939 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6940 "using user-supplied volume_capabilities=%d\n",
6941 volume_capabilities
);
6943 if (volume_mode
== TPACPI_VOL_MODE_AUTO
||
6944 volume_mode
== TPACPI_VOL_MODE_MAX
) {
6945 volume_mode
= TPACPI_VOL_MODE_ECNVRAM
;
6947 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6948 "driver auto-selected volume_mode=%d\n",
6951 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6952 "using user-supplied volume_mode=%d\n",
6956 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6957 "mute is supported, volume control is %s\n",
6958 str_supported(!tp_features
.mixer_no_level_control
));
6960 rc
= volume_create_alsa_mixer();
6962 pr_err("Could not create the ALSA mixer interface\n");
6966 pr_info("Console audio control enabled, mode: %s\n",
6967 (volume_control_allowed
) ?
6968 "override (read/write)" :
6969 "monitor (read only)");
6971 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6972 "registering volume hotkeys as change notification\n");
6973 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6974 | TP_ACPI_HKEY_VOLUP_MASK
6975 | TP_ACPI_HKEY_VOLDWN_MASK
6976 | TP_ACPI_HKEY_MUTE_MASK
);
6981 static int volume_read(struct seq_file
*m
)
6985 if (volume_get_status(&status
) < 0) {
6986 seq_printf(m
, "level:\t\tunreadable\n");
6988 if (tp_features
.mixer_no_level_control
)
6989 seq_printf(m
, "level:\t\tunsupported\n");
6991 seq_printf(m
, "level:\t\t%d\n",
6992 status
& TP_EC_AUDIO_LVL_MSK
);
6994 seq_printf(m
, "mute:\t\t%s\n",
6995 onoff(status
, TP_EC_AUDIO_MUTESW
));
6997 if (volume_control_allowed
) {
6998 seq_printf(m
, "commands:\tunmute, mute\n");
6999 if (!tp_features
.mixer_no_level_control
) {
7001 "commands:\tup, down\n");
7003 "commands:\tlevel <level>"
7004 " (<level> is 0-%d)\n",
7013 static int volume_write(char *buf
)
7016 u8 new_level
, new_mute
;
7022 * We do allow volume control at driver startup, so that the
7023 * user can set initial state through the volume=... parameter hack.
7025 if (!volume_control_allowed
&& tpacpi_lifecycle
!= TPACPI_LIFE_INIT
) {
7026 if (unlikely(!tp_warned
.volume_ctrl_forbidden
)) {
7027 tp_warned
.volume_ctrl_forbidden
= 1;
7028 pr_notice("Console audio control in monitor mode, "
7029 "changes are not allowed\n");
7030 pr_notice("Use the volume_control=1 module parameter "
7031 "to enable volume control\n");
7036 rc
= volume_get_status(&s
);
7040 new_level
= s
& TP_EC_AUDIO_LVL_MSK
;
7041 new_mute
= s
& TP_EC_AUDIO_MUTESW_MSK
;
7043 while ((cmd
= next_cmd(&buf
))) {
7044 if (!tp_features
.mixer_no_level_control
) {
7045 if (strlencmp(cmd
, "up") == 0) {
7048 else if (new_level
< TP_EC_VOLUME_MAX
)
7051 } else if (strlencmp(cmd
, "down") == 0) {
7054 else if (new_level
> 0)
7057 } else if (sscanf(cmd
, "level %u", &l
) == 1 &&
7058 l
>= 0 && l
<= TP_EC_VOLUME_MAX
) {
7063 if (strlencmp(cmd
, "mute") == 0)
7064 new_mute
= TP_EC_AUDIO_MUTESW_MSK
;
7065 else if (strlencmp(cmd
, "unmute") == 0)
7071 if (tp_features
.mixer_no_level_control
) {
7072 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7073 new_mute
? "" : "un");
7074 rc
= volume_set_mute(!!new_mute
);
7076 tpacpi_disclose_usertask("procfs volume",
7077 "%smute and set level to %d\n",
7078 new_mute
? "" : "un", new_level
);
7079 rc
= volume_set_status(new_mute
| new_level
);
7081 volume_alsa_notify_change();
7083 return (rc
== -EINTR
) ? -ERESTARTSYS
: rc
;
7086 static struct ibm_struct volume_driver_data
= {
7088 .read
= volume_read
,
7089 .write
= volume_write
,
7090 .exit
= volume_exit
,
7091 .suspend
= volume_suspend
,
7092 .resume
= volume_resume
,
7093 .shutdown
= volume_shutdown
,
7096 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7098 #define alsa_card NULL
7100 static void inline volume_alsa_notify_change(void)
7104 static int __init
volume_init(struct ibm_init_struct
*iibm
)
7106 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
7111 static struct ibm_struct volume_driver_data
= {
7115 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7117 /*************************************************************************
7124 * TPACPI_FAN_RD_ACPI_GFAN:
7125 * ACPI GFAN method: returns fan level
7127 * see TPACPI_FAN_WR_ACPI_SFAN
7128 * EC 0x2f (HFSP) not available if GFAN exists
7130 * TPACPI_FAN_WR_ACPI_SFAN:
7131 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7133 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7136 * TPACPI_FAN_WR_TPEC:
7137 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7138 * Supported on almost all ThinkPads
7140 * Fan speed changes of any sort (including those caused by the
7141 * disengaged mode) are usually done slowly by the firmware as the
7142 * maximum amount of fan duty cycle change per second seems to be
7145 * Reading is not available if GFAN exists.
7146 * Writing is not available if SFAN exists.
7149 * 7 automatic mode engaged;
7150 * (default operation mode of the ThinkPad)
7151 * fan level is ignored in this mode.
7152 * 6 full speed mode (takes precedence over bit 7);
7153 * not available on all thinkpads. May disable
7154 * the tachometer while the fan controller ramps up
7155 * the speed (which can take up to a few *minutes*).
7156 * Speeds up fan to 100% duty-cycle, which is far above
7157 * the standard RPM levels. It is not impossible that
7158 * it could cause hardware damage.
7159 * 5-3 unused in some models. Extra bits for fan level
7160 * in others, but still useless as all values above
7161 * 7 map to the same speed as level 7 in these models.
7162 * 2-0 fan level (0..7 usually)
7164 * 0x07 = max (set when temperatures critical)
7165 * Some ThinkPads may have other levels, see
7166 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
7168 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
7169 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
7170 * does so, its initial value is meaningless (0x07).
7172 * For firmware bugs, refer to:
7173 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7177 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7178 * Main fan tachometer reading (in RPM)
7180 * This register is present on all ThinkPads with a new-style EC, and
7181 * it is known not to be present on the A21m/e, and T22, as there is
7182 * something else in offset 0x84 according to the ACPI DSDT. Other
7183 * ThinkPads from this same time period (and earlier) probably lack the
7184 * tachometer as well.
7186 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
7187 * was never fixed by IBM to report the EC firmware version string
7188 * probably support the tachometer (like the early X models), so
7189 * detecting it is quite hard. We need more data to know for sure.
7191 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7194 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7197 * For firmware bugs, refer to:
7198 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7202 * ThinkPad EC register 0x31 bit 0 (only on select models)
7204 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7205 * show the speed of the main fan. When bit 0 of EC register 0x31
7206 * is one, the tachometer registers show the speed of the auxiliary
7209 * Fan control seems to affect both fans, regardless of the state
7212 * So far, only the firmware for the X60/X61 non-tablet versions
7213 * seem to support this (firmware TP-7M).
7215 * TPACPI_FAN_WR_ACPI_FANS:
7216 * ThinkPad X31, X40, X41. Not available in the X60.
7218 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7219 * high speed. ACPI DSDT seems to map these three speeds to levels
7220 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7221 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7223 * The speeds are stored on handles
7224 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7226 * There are three default speed sets, accessible as handles:
7227 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7229 * ACPI DSDT switches which set is in use depending on various
7232 * TPACPI_FAN_WR_TPEC is also available and should be used to
7233 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7234 * but the ACPI tables just mention level 7.
7237 enum { /* Fan control constants */
7238 fan_status_offset
= 0x2f, /* EC register 0x2f */
7239 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7240 * 0x84 must be read before 0x85 */
7241 fan_select_offset
= 0x31, /* EC register 0x31 (Firmware 7M)
7242 bit 0 selects which fan is active */
7244 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
7245 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
7247 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
7250 enum fan_status_access_mode
{
7251 TPACPI_FAN_NONE
= 0, /* No fan status or control */
7252 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
7253 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7256 enum fan_control_access_mode
{
7257 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
7258 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
7259 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
7260 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
7263 enum fan_control_commands
{
7264 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
7265 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
7266 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
7267 * and also watchdog cmd */
7270 static bool fan_control_allowed
;
7272 static enum fan_status_access_mode fan_status_access_mode
;
7273 static enum fan_control_access_mode fan_control_access_mode
;
7274 static enum fan_control_commands fan_control_commands
;
7276 static u8 fan_control_initial_status
;
7277 static u8 fan_control_desired_level
;
7278 static u8 fan_control_resume_level
;
7279 static int fan_watchdog_maxinterval
;
7281 static struct mutex fan_mutex
;
7283 static void fan_watchdog_fire(struct work_struct
*ignored
);
7284 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
7286 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
7287 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
7288 "\\FSPD", /* 600e/x, 770e, 770x */
7290 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
7291 "JFNS", /* 770x-JL */
7295 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7296 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7297 * be in auto mode (0x80).
7299 * This is corrected by any write to HFSP either by the driver, or
7302 * We assume 0x07 really means auto mode while this quirk is active,
7303 * as this is far more likely than the ThinkPad being in level 7,
7304 * which is only used by the firmware during thermal emergencies.
7306 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7307 * TP-70 (T43, R52), which are known to be buggy.
7310 static void fan_quirk1_setup(void)
7312 if (fan_control_initial_status
== 0x07) {
7313 pr_notice("fan_init: initial fan status is unknown, "
7314 "assuming it is in auto mode\n");
7315 tp_features
.fan_ctrl_status_undef
= 1;
7319 static void fan_quirk1_handle(u8
*fan_status
)
7321 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
7322 if (*fan_status
!= fan_control_initial_status
) {
7323 /* something changed the HFSP regisnter since
7324 * driver init time, so it is not undefined
7326 tp_features
.fan_ctrl_status_undef
= 0;
7328 /* Return most likely status. In fact, it
7329 * might be the only possible status */
7330 *fan_status
= TP_EC_FAN_AUTO
;
7335 /* Select main fan on X60/X61, NOOP on others */
7336 static bool fan_select_fan1(void)
7338 if (tp_features
.second_fan
) {
7341 if (ec_read(fan_select_offset
, &val
) < 0)
7344 if (ec_write(fan_select_offset
, val
) < 0)
7350 /* Select secondary fan on X60/X61 */
7351 static bool fan_select_fan2(void)
7355 if (!tp_features
.second_fan
)
7358 if (ec_read(fan_select_offset
, &val
) < 0)
7361 if (ec_write(fan_select_offset
, val
) < 0)
7368 * Call with fan_mutex held
7370 static void fan_update_desired_level(u8 status
)
7373 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7375 fan_control_desired_level
= 7;
7377 fan_control_desired_level
= status
;
7381 static int fan_get_status(u8
*status
)
7386 * Add TPACPI_FAN_RD_ACPI_FANS ? */
7388 switch (fan_status_access_mode
) {
7389 case TPACPI_FAN_RD_ACPI_GFAN
:
7390 /* 570, 600e/x, 770e, 770x */
7392 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
7400 case TPACPI_FAN_RD_TPEC
:
7401 /* all except 570, 600e/x, 770e, 770x */
7402 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
7405 if (likely(status
)) {
7407 fan_quirk1_handle(status
);
7419 static int fan_get_status_safe(u8
*status
)
7424 if (mutex_lock_killable(&fan_mutex
))
7425 return -ERESTARTSYS
;
7426 rc
= fan_get_status(&s
);
7428 fan_update_desired_level(s
);
7429 mutex_unlock(&fan_mutex
);
7437 static int fan_get_speed(unsigned int *speed
)
7441 switch (fan_status_access_mode
) {
7442 case TPACPI_FAN_RD_TPEC
:
7443 /* all except 570, 600e/x, 770e, 770x */
7444 if (unlikely(!fan_select_fan1()))
7446 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
7447 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
7451 *speed
= (hi
<< 8) | lo
;
7462 static int fan2_get_speed(unsigned int *speed
)
7467 switch (fan_status_access_mode
) {
7468 case TPACPI_FAN_RD_TPEC
:
7469 /* all except 570, 600e/x, 770e, 770x */
7470 if (unlikely(!fan_select_fan2()))
7472 rc
= !acpi_ec_read(fan_rpm_offset
, &lo
) ||
7473 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
);
7474 fan_select_fan1(); /* play it safe */
7479 *speed
= (hi
<< 8) | lo
;
7490 static int fan_set_level(int level
)
7492 if (!fan_control_allowed
)
7495 switch (fan_control_access_mode
) {
7496 case TPACPI_FAN_WR_ACPI_SFAN
:
7497 if (level
>= 0 && level
<= 7) {
7498 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
7504 case TPACPI_FAN_WR_ACPI_FANS
:
7505 case TPACPI_FAN_WR_TPEC
:
7506 if (!(level
& TP_EC_FAN_AUTO
) &&
7507 !(level
& TP_EC_FAN_FULLSPEED
) &&
7508 ((level
< 0) || (level
> 7)))
7511 /* safety net should the EC not support AUTO
7512 * or FULLSPEED mode bits and just ignore them */
7513 if (level
& TP_EC_FAN_FULLSPEED
)
7514 level
|= 7; /* safety min speed 7 */
7515 else if (level
& TP_EC_FAN_AUTO
)
7516 level
|= 4; /* safety min speed 4 */
7518 if (!acpi_ec_write(fan_status_offset
, level
))
7521 tp_features
.fan_ctrl_status_undef
= 0;
7528 vdbg_printk(TPACPI_DBG_FAN
,
7529 "fan control: set fan control register to 0x%02x\n", level
);
7533 static int fan_set_level_safe(int level
)
7537 if (!fan_control_allowed
)
7540 if (mutex_lock_killable(&fan_mutex
))
7541 return -ERESTARTSYS
;
7543 if (level
== TPACPI_FAN_LAST_LEVEL
)
7544 level
= fan_control_desired_level
;
7546 rc
= fan_set_level(level
);
7548 fan_update_desired_level(level
);
7550 mutex_unlock(&fan_mutex
);
7554 static int fan_set_enable(void)
7559 if (!fan_control_allowed
)
7562 if (mutex_lock_killable(&fan_mutex
))
7563 return -ERESTARTSYS
;
7565 switch (fan_control_access_mode
) {
7566 case TPACPI_FAN_WR_ACPI_FANS
:
7567 case TPACPI_FAN_WR_TPEC
:
7568 rc
= fan_get_status(&s
);
7572 /* Don't go out of emergency fan mode */
7575 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
7578 if (!acpi_ec_write(fan_status_offset
, s
))
7581 tp_features
.fan_ctrl_status_undef
= 0;
7586 case TPACPI_FAN_WR_ACPI_SFAN
:
7587 rc
= fan_get_status(&s
);
7593 /* Set fan to at least level 4 */
7596 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
7606 mutex_unlock(&fan_mutex
);
7609 vdbg_printk(TPACPI_DBG_FAN
,
7610 "fan control: set fan control register to 0x%02x\n",
7615 static int fan_set_disable(void)
7619 if (!fan_control_allowed
)
7622 if (mutex_lock_killable(&fan_mutex
))
7623 return -ERESTARTSYS
;
7626 switch (fan_control_access_mode
) {
7627 case TPACPI_FAN_WR_ACPI_FANS
:
7628 case TPACPI_FAN_WR_TPEC
:
7629 if (!acpi_ec_write(fan_status_offset
, 0x00))
7632 fan_control_desired_level
= 0;
7633 tp_features
.fan_ctrl_status_undef
= 0;
7637 case TPACPI_FAN_WR_ACPI_SFAN
:
7638 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
7641 fan_control_desired_level
= 0;
7649 vdbg_printk(TPACPI_DBG_FAN
,
7650 "fan control: set fan control register to 0\n");
7652 mutex_unlock(&fan_mutex
);
7656 static int fan_set_speed(int speed
)
7660 if (!fan_control_allowed
)
7663 if (mutex_lock_killable(&fan_mutex
))
7664 return -ERESTARTSYS
;
7667 switch (fan_control_access_mode
) {
7668 case TPACPI_FAN_WR_ACPI_FANS
:
7669 if (speed
>= 0 && speed
<= 65535) {
7670 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
7671 speed
, speed
, speed
))
7681 mutex_unlock(&fan_mutex
);
7685 static void fan_watchdog_reset(void)
7687 static int fan_watchdog_active
;
7689 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
7692 if (fan_watchdog_active
)
7693 cancel_delayed_work(&fan_watchdog_task
);
7695 if (fan_watchdog_maxinterval
> 0 &&
7696 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
7697 fan_watchdog_active
= 1;
7698 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
7699 msecs_to_jiffies(fan_watchdog_maxinterval
7701 pr_err("failed to queue the fan watchdog, "
7702 "watchdog will not trigger\n");
7705 fan_watchdog_active
= 0;
7708 static void fan_watchdog_fire(struct work_struct
*ignored
)
7712 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
7715 pr_notice("fan watchdog: enabling fan\n");
7716 rc
= fan_set_enable();
7718 pr_err("fan watchdog: error %d while enabling fan, "
7719 "will try again later...\n", -rc
);
7720 /* reschedule for later */
7721 fan_watchdog_reset();
7726 * SYSFS fan layout: hwmon compatible (device)
7729 * 0: "disengaged" mode
7731 * 2: native EC "auto" mode (recommended, hardware default)
7733 * pwm*: set speed in manual mode, ignored otherwise.
7734 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7737 * fan*_input: tachometer reading, RPM
7740 * SYSFS fan layout: extensions
7742 * fan_watchdog (driver):
7743 * fan watchdog interval in seconds, 0 disables (default), max 120
7746 /* sysfs fan pwm1_enable ----------------------------------------------- */
7747 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
7748 struct device_attribute
*attr
,
7754 res
= fan_get_status_safe(&status
);
7758 if (status
& TP_EC_FAN_FULLSPEED
) {
7760 } else if (status
& TP_EC_FAN_AUTO
) {
7765 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
7768 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
7769 struct device_attribute
*attr
,
7770 const char *buf
, size_t count
)
7775 if (parse_strtoul(buf
, 2, &t
))
7778 tpacpi_disclose_usertask("hwmon pwm1_enable",
7779 "set fan mode to %lu\n", t
);
7783 level
= TP_EC_FAN_FULLSPEED
;
7786 level
= TPACPI_FAN_LAST_LEVEL
;
7789 level
= TP_EC_FAN_AUTO
;
7792 /* reserved for software-controlled auto mode */
7798 res
= fan_set_level_safe(level
);
7804 fan_watchdog_reset();
7809 static struct device_attribute dev_attr_fan_pwm1_enable
=
7810 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
7811 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
7813 /* sysfs fan pwm1 ------------------------------------------------------ */
7814 static ssize_t
fan_pwm1_show(struct device
*dev
,
7815 struct device_attribute
*attr
,
7821 res
= fan_get_status_safe(&status
);
7826 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
7827 status
= fan_control_desired_level
;
7832 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
7835 static ssize_t
fan_pwm1_store(struct device
*dev
,
7836 struct device_attribute
*attr
,
7837 const char *buf
, size_t count
)
7841 u8 status
, newlevel
;
7843 if (parse_strtoul(buf
, 255, &s
))
7846 tpacpi_disclose_usertask("hwmon pwm1",
7847 "set fan speed to %lu\n", s
);
7849 /* scale down from 0-255 to 0-7 */
7850 newlevel
= (s
>> 5) & 0x07;
7852 if (mutex_lock_killable(&fan_mutex
))
7853 return -ERESTARTSYS
;
7855 rc
= fan_get_status(&status
);
7856 if (!rc
&& (status
&
7857 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7858 rc
= fan_set_level(newlevel
);
7862 fan_update_desired_level(newlevel
);
7863 fan_watchdog_reset();
7867 mutex_unlock(&fan_mutex
);
7868 return (rc
)? rc
: count
;
7871 static struct device_attribute dev_attr_fan_pwm1
=
7872 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
7873 fan_pwm1_show
, fan_pwm1_store
);
7875 /* sysfs fan fan1_input ------------------------------------------------ */
7876 static ssize_t
fan_fan1_input_show(struct device
*dev
,
7877 struct device_attribute
*attr
,
7883 res
= fan_get_speed(&speed
);
7887 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7890 static struct device_attribute dev_attr_fan_fan1_input
=
7891 __ATTR(fan1_input
, S_IRUGO
,
7892 fan_fan1_input_show
, NULL
);
7894 /* sysfs fan fan2_input ------------------------------------------------ */
7895 static ssize_t
fan_fan2_input_show(struct device
*dev
,
7896 struct device_attribute
*attr
,
7902 res
= fan2_get_speed(&speed
);
7906 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7909 static struct device_attribute dev_attr_fan_fan2_input
=
7910 __ATTR(fan2_input
, S_IRUGO
,
7911 fan_fan2_input_show
, NULL
);
7913 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7914 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
7917 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
7920 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
7921 const char *buf
, size_t count
)
7925 if (parse_strtoul(buf
, 120, &t
))
7928 if (!fan_control_allowed
)
7931 fan_watchdog_maxinterval
= t
;
7932 fan_watchdog_reset();
7934 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t
);
7939 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
7940 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
7942 /* --------------------------------------------------------------------- */
7943 static struct attribute
*fan_attributes
[] = {
7944 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
7945 &dev_attr_fan_fan1_input
.attr
,
7946 NULL
, /* for fan2_input */
7950 static const struct attribute_group fan_attr_group
= {
7951 .attrs
= fan_attributes
,
7954 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7955 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7957 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7958 { .vendor = PCI_VENDOR_ID_IBM, \
7959 .bios = TPACPI_MATCH_ANY, \
7960 .ec = TPID(__id1, __id2), \
7961 .quirks = __quirks }
7963 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7964 { .vendor = PCI_VENDOR_ID_LENOVO, \
7965 .bios = TPACPI_MATCH_ANY, \
7966 .ec = TPID(__id1, __id2), \
7967 .quirks = __quirks }
7969 static const struct tpacpi_quirk fan_quirk_table
[] __initconst
= {
7970 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1
),
7971 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1
),
7972 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1
),
7973 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1
),
7974 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN
),
7977 #undef TPACPI_FAN_QL
7978 #undef TPACPI_FAN_QI
7980 static int __init
fan_init(struct ibm_init_struct
*iibm
)
7983 unsigned long quirks
;
7985 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7986 "initializing fan subdriver\n");
7988 mutex_init(&fan_mutex
);
7989 fan_status_access_mode
= TPACPI_FAN_NONE
;
7990 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
7991 fan_control_commands
= 0;
7992 fan_watchdog_maxinterval
= 0;
7993 tp_features
.fan_ctrl_status_undef
= 0;
7994 tp_features
.second_fan
= 0;
7995 fan_control_desired_level
= 7;
7997 if (tpacpi_is_ibm()) {
7998 TPACPI_ACPIHANDLE_INIT(fans
);
7999 TPACPI_ACPIHANDLE_INIT(gfan
);
8000 TPACPI_ACPIHANDLE_INIT(sfan
);
8003 quirks
= tpacpi_check_quirks(fan_quirk_table
,
8004 ARRAY_SIZE(fan_quirk_table
));
8007 /* 570, 600e/x, 770e, 770x */
8008 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
8010 /* all other ThinkPads: note that even old-style
8011 * ThinkPad ECs supports the fan control register */
8012 if (likely(acpi_ec_read(fan_status_offset
,
8013 &fan_control_initial_status
))) {
8014 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
8015 if (quirks
& TPACPI_FAN_Q1
)
8017 if (quirks
& TPACPI_FAN_2FAN
) {
8018 tp_features
.second_fan
= 1;
8019 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8020 "secondary fan support enabled\n");
8023 pr_err("ThinkPad ACPI EC access misbehaving, "
8024 "fan status and control unavailable\n");
8031 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
8032 fan_control_commands
|=
8033 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
8036 /* gfan without sfan means no fan control */
8037 /* all other models implement TP EC 0x2f control */
8041 fan_control_access_mode
=
8042 TPACPI_FAN_WR_ACPI_FANS
;
8043 fan_control_commands
|=
8044 TPACPI_FAN_CMD_SPEED
|
8045 TPACPI_FAN_CMD_LEVEL
|
8046 TPACPI_FAN_CMD_ENABLE
;
8048 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
8049 fan_control_commands
|=
8050 TPACPI_FAN_CMD_LEVEL
|
8051 TPACPI_FAN_CMD_ENABLE
;
8056 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8057 "fan is %s, modes %d, %d\n",
8058 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
8059 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
8060 fan_status_access_mode
, fan_control_access_mode
);
8062 /* fan control master switch */
8063 if (!fan_control_allowed
) {
8064 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
8065 fan_control_commands
= 0;
8066 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8067 "fan control features disabled by parameter\n");
8070 /* update fan_control_desired_level */
8071 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
8072 fan_get_status_safe(NULL
);
8074 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
8075 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
8076 if (tp_features
.second_fan
) {
8077 /* attach second fan tachometer */
8078 fan_attributes
[ARRAY_SIZE(fan_attributes
)-2] =
8079 &dev_attr_fan_fan2_input
.attr
;
8081 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8086 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
8087 &driver_attr_fan_watchdog
);
8089 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8098 static void fan_exit(void)
8100 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_FAN
,
8101 "cancelling any pending fan watchdog tasks\n");
8103 /* FIXME: can we really do this unconditionally? */
8104 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
8105 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
8106 &driver_attr_fan_watchdog
);
8108 cancel_delayed_work(&fan_watchdog_task
);
8109 flush_workqueue(tpacpi_wq
);
8112 static void fan_suspend(void)
8116 if (!fan_control_allowed
)
8119 /* Store fan status in cache */
8120 fan_control_resume_level
= 0;
8121 rc
= fan_get_status_safe(&fan_control_resume_level
);
8123 pr_notice("failed to read fan level for later "
8124 "restore during resume: %d\n", rc
);
8126 /* if it is undefined, don't attempt to restore it.
8128 if (tp_features
.fan_ctrl_status_undef
)
8129 fan_control_resume_level
= 0;
8132 static void fan_resume(void)
8134 u8 current_level
= 7;
8135 bool do_set
= false;
8138 /* DSDT *always* updates status on resume */
8139 tp_features
.fan_ctrl_status_undef
= 0;
8141 if (!fan_control_allowed
||
8142 !fan_control_resume_level
||
8143 (fan_get_status_safe(¤t_level
) < 0))
8146 switch (fan_control_access_mode
) {
8147 case TPACPI_FAN_WR_ACPI_SFAN
:
8148 /* never decrease fan level */
8149 do_set
= (fan_control_resume_level
> current_level
);
8151 case TPACPI_FAN_WR_ACPI_FANS
:
8152 case TPACPI_FAN_WR_TPEC
:
8153 /* never decrease fan level, scale is:
8154 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8156 * We expect the firmware to set either 7 or AUTO, but we
8157 * handle FULLSPEED out of paranoia.
8159 * So, we can safely only restore FULLSPEED or 7, anything
8160 * else could slow the fan. Restoring AUTO is useless, at
8161 * best that's exactly what the DSDT already set (it is the
8164 * Always keep in mind that the DSDT *will* have set the
8165 * fans to what the vendor supposes is the best level. We
8166 * muck with it only to speed the fan up.
8168 if (fan_control_resume_level
!= 7 &&
8169 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
8172 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
8173 (current_level
!= fan_control_resume_level
);
8179 pr_notice("restoring fan level to 0x%02x\n",
8180 fan_control_resume_level
);
8181 rc
= fan_set_level_safe(fan_control_resume_level
);
8183 pr_notice("failed to restore fan level: %d\n", rc
);
8187 static int fan_read(struct seq_file
*m
)
8191 unsigned int speed
= 0;
8193 switch (fan_status_access_mode
) {
8194 case TPACPI_FAN_RD_ACPI_GFAN
:
8195 /* 570, 600e/x, 770e, 770x */
8196 rc
= fan_get_status_safe(&status
);
8200 seq_printf(m
, "status:\t\t%s\n"
8202 (status
!= 0) ? "enabled" : "disabled", status
);
8205 case TPACPI_FAN_RD_TPEC
:
8206 /* all except 570, 600e/x, 770e, 770x */
8207 rc
= fan_get_status_safe(&status
);
8211 seq_printf(m
, "status:\t\t%s\n",
8212 (status
!= 0) ? "enabled" : "disabled");
8214 rc
= fan_get_speed(&speed
);
8218 seq_printf(m
, "speed:\t\t%d\n", speed
);
8220 if (status
& TP_EC_FAN_FULLSPEED
)
8221 /* Disengaged mode takes precedence */
8222 seq_printf(m
, "level:\t\tdisengaged\n");
8223 else if (status
& TP_EC_FAN_AUTO
)
8224 seq_printf(m
, "level:\t\tauto\n");
8226 seq_printf(m
, "level:\t\t%d\n", status
);
8229 case TPACPI_FAN_NONE
:
8231 seq_printf(m
, "status:\t\tnot supported\n");
8234 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
8235 seq_printf(m
, "commands:\tlevel <level>");
8237 switch (fan_control_access_mode
) {
8238 case TPACPI_FAN_WR_ACPI_SFAN
:
8239 seq_printf(m
, " (<level> is 0-7)\n");
8243 seq_printf(m
, " (<level> is 0-7, "
8244 "auto, disengaged, full-speed)\n");
8249 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
8250 seq_printf(m
, "commands:\tenable, disable\n"
8251 "commands:\twatchdog <timeout> (<timeout> "
8252 "is 0 (off), 1-120 (seconds))\n");
8254 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
8255 seq_printf(m
, "commands:\tspeed <speed>"
8256 " (<speed> is 0-65535)\n");
8261 static int fan_write_cmd_level(const char *cmd
, int *rc
)
8265 if (strlencmp(cmd
, "level auto") == 0)
8266 level
= TP_EC_FAN_AUTO
;
8267 else if ((strlencmp(cmd
, "level disengaged") == 0) |
8268 (strlencmp(cmd
, "level full-speed") == 0))
8269 level
= TP_EC_FAN_FULLSPEED
;
8270 else if (sscanf(cmd
, "level %d", &level
) != 1)
8273 *rc
= fan_set_level_safe(level
);
8275 pr_err("level command accepted for unsupported access mode %d\n",
8276 fan_control_access_mode
);
8278 tpacpi_disclose_usertask("procfs fan",
8279 "set level to %d\n", level
);
8284 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
8286 if (strlencmp(cmd
, "enable") != 0)
8289 *rc
= fan_set_enable();
8291 pr_err("enable command accepted for unsupported access mode %d\n",
8292 fan_control_access_mode
);
8294 tpacpi_disclose_usertask("procfs fan", "enable\n");
8299 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
8301 if (strlencmp(cmd
, "disable") != 0)
8304 *rc
= fan_set_disable();
8306 pr_err("disable command accepted for unsupported access mode %d\n",
8307 fan_control_access_mode
);
8309 tpacpi_disclose_usertask("procfs fan", "disable\n");
8314 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
8319 * Support speed <low> <medium> <high> ? */
8321 if (sscanf(cmd
, "speed %d", &speed
) != 1)
8324 *rc
= fan_set_speed(speed
);
8326 pr_err("speed command accepted for unsupported access mode %d\n",
8327 fan_control_access_mode
);
8329 tpacpi_disclose_usertask("procfs fan",
8330 "set speed to %d\n", speed
);
8335 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
8339 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
8342 if (interval
< 0 || interval
> 120)
8345 fan_watchdog_maxinterval
= interval
;
8346 tpacpi_disclose_usertask("procfs fan",
8347 "set watchdog timer to %d\n",
8354 static int fan_write(char *buf
)
8359 while (!rc
&& (cmd
= next_cmd(&buf
))) {
8360 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
8361 fan_write_cmd_level(cmd
, &rc
)) &&
8362 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
8363 (fan_write_cmd_enable(cmd
, &rc
) ||
8364 fan_write_cmd_disable(cmd
, &rc
) ||
8365 fan_write_cmd_watchdog(cmd
, &rc
))) &&
8366 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
8367 fan_write_cmd_speed(cmd
, &rc
))
8371 fan_watchdog_reset();
8377 static struct ibm_struct fan_driver_data
= {
8382 .suspend
= fan_suspend
,
8383 .resume
= fan_resume
,
8386 /****************************************************************************
8387 ****************************************************************************
8391 ****************************************************************************
8392 ****************************************************************************/
8395 * HKEY event callout for other subdrivers go here
8396 * (yes, it is ugly, but it is quick, safe, and gets the job done
8398 static void tpacpi_driver_event(const unsigned int hkey_event
)
8400 if (ibm_backlight_device
) {
8401 switch (hkey_event
) {
8402 case TP_HKEY_EV_BRGHT_UP
:
8403 case TP_HKEY_EV_BRGHT_DOWN
:
8404 tpacpi_brightness_notify_change();
8408 switch (hkey_event
) {
8409 case TP_HKEY_EV_VOL_UP
:
8410 case TP_HKEY_EV_VOL_DOWN
:
8411 case TP_HKEY_EV_VOL_MUTE
:
8412 volume_alsa_notify_change();
8417 static void hotkey_driver_event(const unsigned int scancode
)
8419 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
8422 /* sysfs name ---------------------------------------------------------- */
8423 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
8424 struct device_attribute
*attr
,
8427 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
8430 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
8431 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
8433 /* --------------------------------------------------------------------- */
8436 static struct proc_dir_entry
*proc_dir
;
8439 * Module and infrastructure proble, init and exit handling
8442 static bool force_load
;
8444 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
8445 static const char * __init
str_supported(int is_supported
)
8447 static char text_unsupported
[] __initdata
= "not supported";
8449 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
8451 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8453 static void ibm_exit(struct ibm_struct
*ibm
)
8455 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
8457 list_del_init(&ibm
->all_drivers
);
8459 if (ibm
->flags
.acpi_notify_installed
) {
8460 dbg_printk(TPACPI_DBG_EXIT
,
8461 "%s: acpi_remove_notify_handler\n", ibm
->name
);
8463 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
8465 dispatch_acpi_notify
);
8466 ibm
->flags
.acpi_notify_installed
= 0;
8469 if (ibm
->flags
.proc_created
) {
8470 dbg_printk(TPACPI_DBG_EXIT
,
8471 "%s: remove_proc_entry\n", ibm
->name
);
8472 remove_proc_entry(ibm
->name
, proc_dir
);
8473 ibm
->flags
.proc_created
= 0;
8476 if (ibm
->flags
.acpi_driver_registered
) {
8477 dbg_printk(TPACPI_DBG_EXIT
,
8478 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
8480 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
8481 kfree(ibm
->acpi
->driver
);
8482 ibm
->acpi
->driver
= NULL
;
8483 ibm
->flags
.acpi_driver_registered
= 0;
8486 if (ibm
->flags
.init_called
&& ibm
->exit
) {
8488 ibm
->flags
.init_called
= 0;
8491 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
8494 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
8497 struct ibm_struct
*ibm
= iibm
->data
;
8498 struct proc_dir_entry
*entry
;
8500 BUG_ON(ibm
== NULL
);
8502 INIT_LIST_HEAD(&ibm
->all_drivers
);
8504 if (ibm
->flags
.experimental
&& !experimental
)
8507 dbg_printk(TPACPI_DBG_INIT
,
8508 "probing for %s\n", ibm
->name
);
8511 ret
= iibm
->init(iibm
);
8513 return 0; /* probe failed */
8517 ibm
->flags
.init_called
= 1;
8521 if (ibm
->acpi
->hid
) {
8522 ret
= register_tpacpi_subdriver(ibm
);
8527 if (ibm
->acpi
->notify
) {
8528 ret
= setup_acpi_notify(ibm
);
8529 if (ret
== -ENODEV
) {
8530 pr_notice("disabling subdriver %s\n",
8540 dbg_printk(TPACPI_DBG_INIT
,
8541 "%s installed\n", ibm
->name
);
8544 umode_t mode
= iibm
->base_procfs_mode
;
8550 entry
= proc_create_data(ibm
->name
, mode
, proc_dir
,
8551 &dispatch_proc_fops
, ibm
);
8553 pr_err("unable to create proc entry %s\n", ibm
->name
);
8557 ibm
->flags
.proc_created
= 1;
8560 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
8565 dbg_printk(TPACPI_DBG_INIT
,
8566 "%s: at error exit path with result %d\n",
8570 return (ret
< 0)? ret
: 0;
8575 static bool __pure __init
tpacpi_is_fw_digit(const char c
)
8577 return (c
>= '0' && c
<= '9') || (c
>= 'A' && c
<= 'Z');
8580 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8581 static bool __pure __init
tpacpi_is_valid_fw_id(const char* const s
,
8584 return s
&& strlen(s
) >= 8 &&
8585 tpacpi_is_fw_digit(s
[0]) &&
8586 tpacpi_is_fw_digit(s
[1]) &&
8587 s
[2] == t
&& s
[3] == 'T' &&
8588 tpacpi_is_fw_digit(s
[4]) &&
8589 tpacpi_is_fw_digit(s
[5]);
8592 /* returns 0 - probe ok, or < 0 - probe error.
8593 * Probe ok doesn't mean thinkpad found.
8594 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8595 static int __must_check __init
get_thinkpad_model_data(
8596 struct thinkpad_id_data
*tp
)
8598 const struct dmi_device
*dev
= NULL
;
8599 char ec_fw_string
[18];
8605 memset(tp
, 0, sizeof(*tp
));
8607 if (dmi_name_in_vendors("IBM"))
8608 tp
->vendor
= PCI_VENDOR_ID_IBM
;
8609 else if (dmi_name_in_vendors("LENOVO"))
8610 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
8614 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
8615 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
8616 if (s
&& !tp
->bios_version_str
)
8619 /* Really ancient ThinkPad 240X will fail this, which is fine */
8620 if (!tpacpi_is_valid_fw_id(tp
->bios_version_str
, 'E'))
8623 tp
->bios_model
= tp
->bios_version_str
[0]
8624 | (tp
->bios_version_str
[1] << 8);
8625 tp
->bios_release
= (tp
->bios_version_str
[4] << 8)
8626 | tp
->bios_version_str
[5];
8629 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8630 * X32 or newer, all Z series; Some models must have an
8631 * up-to-date BIOS or they will not be detected.
8633 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8635 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
8636 if (sscanf(dev
->name
,
8637 "IBM ThinkPad Embedded Controller -[%17c",
8638 ec_fw_string
) == 1) {
8639 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
8640 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
8642 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
8643 if (!tp
->ec_version_str
)
8646 if (tpacpi_is_valid_fw_id(ec_fw_string
, 'H')) {
8647 tp
->ec_model
= ec_fw_string
[0]
8648 | (ec_fw_string
[1] << 8);
8649 tp
->ec_release
= (ec_fw_string
[4] << 8)
8652 pr_notice("ThinkPad firmware release %s "
8653 "doesn't match the known patterns\n",
8655 pr_notice("please report this to %s\n",
8662 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
8663 if (s
&& !(strnicmp(s
, "ThinkPad", 8) && strnicmp(s
, "Lenovo", 6))) {
8664 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
8669 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
8670 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
8671 if (s
&& !tp
->nummodel_str
)
8677 static int __init
probe_for_thinkpad(void)
8684 /* It would be dangerous to run the driver in this case */
8685 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8689 * Non-ancient models have better DMI tagging, but very old models
8690 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
8692 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
) ||
8693 (thinkpad_id
.ec_model
!= 0) ||
8694 tpacpi_is_fw_known();
8696 /* The EC handler is required */
8697 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID
, &ec_handle
);
8700 pr_err("Not yet supported ThinkPad detected!\n");
8704 if (!is_thinkpad
&& !force_load
)
8710 static void __init
thinkpad_acpi_init_banner(void)
8712 pr_info("%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
8713 pr_info("%s\n", TPACPI_URL
);
8715 pr_info("ThinkPad BIOS %s, EC %s\n",
8716 (thinkpad_id
.bios_version_str
) ?
8717 thinkpad_id
.bios_version_str
: "unknown",
8718 (thinkpad_id
.ec_version_str
) ?
8719 thinkpad_id
.ec_version_str
: "unknown");
8721 BUG_ON(!thinkpad_id
.vendor
);
8723 if (thinkpad_id
.model_str
)
8724 pr_info("%s %s, model %s\n",
8725 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
8726 "IBM" : ((thinkpad_id
.vendor
==
8727 PCI_VENDOR_ID_LENOVO
) ?
8728 "Lenovo" : "Unknown vendor"),
8729 thinkpad_id
.model_str
,
8730 (thinkpad_id
.nummodel_str
) ?
8731 thinkpad_id
.nummodel_str
: "unknown");
8734 /* Module init, exit, parameters */
8736 static struct ibm_init_struct ibms_init
[] __initdata
= {
8738 .data
= &thinkpad_acpi_driver_data
,
8741 .init
= hotkey_init
,
8742 .data
= &hotkey_driver_data
,
8745 .init
= bluetooth_init
,
8746 .data
= &bluetooth_driver_data
,
8750 .data
= &wan_driver_data
,
8754 .data
= &uwb_driver_data
,
8756 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
8759 .base_procfs_mode
= S_IRUSR
,
8760 .data
= &video_driver_data
,
8765 .data
= &light_driver_data
,
8769 .data
= &cmos_driver_data
,
8773 .data
= &led_driver_data
,
8777 .data
= &beep_driver_data
,
8780 .init
= thermal_init
,
8781 .data
= &thermal_driver_data
,
8784 .init
= brightness_init
,
8785 .data
= &brightness_driver_data
,
8788 .init
= volume_init
,
8789 .data
= &volume_driver_data
,
8793 .data
= &fan_driver_data
,
8797 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
8800 struct ibm_struct
*ibm
;
8802 if (!kp
|| !kp
->name
|| !val
)
8805 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8806 ibm
= ibms_init
[i
].data
;
8807 WARN_ON(ibm
== NULL
);
8809 if (!ibm
|| !ibm
->name
)
8812 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
8813 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
8815 strcpy(ibms_init
[i
].param
, val
);
8816 strcat(ibms_init
[i
].param
, ",");
8824 module_param(experimental
, int, 0444);
8825 MODULE_PARM_DESC(experimental
,
8826 "Enables experimental features when non-zero");
8828 module_param_named(debug
, dbg_level
, uint
, 0);
8829 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
8831 module_param(force_load
, bool, 0444);
8832 MODULE_PARM_DESC(force_load
,
8833 "Attempts to load the driver even on a "
8834 "mis-identified ThinkPad when true");
8836 module_param_named(fan_control
, fan_control_allowed
, bool, 0444);
8837 MODULE_PARM_DESC(fan_control
,
8838 "Enables setting fan parameters features when true");
8840 module_param_named(brightness_mode
, brightness_mode
, uint
, 0444);
8841 MODULE_PARM_DESC(brightness_mode
,
8842 "Selects brightness control strategy: "
8843 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
8845 module_param(brightness_enable
, uint
, 0444);
8846 MODULE_PARM_DESC(brightness_enable
,
8847 "Enables backlight control when 1, disables when 0");
8849 module_param(hotkey_report_mode
, uint
, 0444);
8850 MODULE_PARM_DESC(hotkey_report_mode
,
8851 "used for backwards compatibility with userspace, "
8852 "see documentation");
8854 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
8855 module_param_named(volume_mode
, volume_mode
, uint
, 0444);
8856 MODULE_PARM_DESC(volume_mode
,
8857 "Selects volume control strategy: "
8858 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8860 module_param_named(volume_capabilities
, volume_capabilities
, uint
, 0444);
8861 MODULE_PARM_DESC(volume_capabilities
,
8862 "Selects the mixer capabilites: "
8863 "0=auto, 1=volume and mute, 2=mute only");
8865 module_param_named(volume_control
, volume_control_allowed
, bool, 0444);
8866 MODULE_PARM_DESC(volume_control
,
8867 "Enables software override for the console audio "
8868 "control when true");
8870 /* ALSA module API parameters */
8871 module_param_named(index
, alsa_index
, int, 0444);
8872 MODULE_PARM_DESC(index
, "ALSA index for the ACPI EC Mixer");
8873 module_param_named(id
, alsa_id
, charp
, 0444);
8874 MODULE_PARM_DESC(id
, "ALSA id for the ACPI EC Mixer");
8875 module_param_named(enable
, alsa_enable
, bool, 0444);
8876 MODULE_PARM_DESC(enable
, "Enable the ALSA interface for the ACPI EC Mixer");
8877 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
8879 #define TPACPI_PARAM(feature) \
8880 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
8881 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
8882 "at module load, see documentation")
8884 TPACPI_PARAM(hotkey
);
8885 TPACPI_PARAM(bluetooth
);
8886 TPACPI_PARAM(video
);
8887 TPACPI_PARAM(light
);
8891 TPACPI_PARAM(brightness
);
8892 TPACPI_PARAM(volume
);
8895 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
8896 module_param(dbg_wlswemul
, uint
, 0444);
8897 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
8898 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
8899 MODULE_PARM_DESC(wlsw_state
,
8900 "Initial state of the emulated WLSW switch");
8902 module_param(dbg_bluetoothemul
, uint
, 0444);
8903 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
8904 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
8905 MODULE_PARM_DESC(bluetooth_state
,
8906 "Initial state of the emulated bluetooth switch");
8908 module_param(dbg_wwanemul
, uint
, 0444);
8909 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
8910 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
8911 MODULE_PARM_DESC(wwan_state
,
8912 "Initial state of the emulated WWAN switch");
8914 module_param(dbg_uwbemul
, uint
, 0444);
8915 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
8916 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
8917 MODULE_PARM_DESC(uwb_state
,
8918 "Initial state of the emulated UWB switch");
8921 static void thinkpad_acpi_module_exit(void)
8923 struct ibm_struct
*ibm
, *itmp
;
8925 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
8927 list_for_each_entry_safe_reverse(ibm
, itmp
,
8928 &tpacpi_all_drivers
,
8933 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
8935 if (tpacpi_inputdev
) {
8936 if (tp_features
.input_device_registered
)
8937 input_unregister_device(tpacpi_inputdev
);
8939 input_free_device(tpacpi_inputdev
);
8940 kfree(hotkey_keycode_map
);
8944 hwmon_device_unregister(tpacpi_hwmon
);
8946 if (tp_features
.sensors_pdev_attrs_registered
)
8947 device_remove_file(&tpacpi_sensors_pdev
->dev
,
8948 &dev_attr_thinkpad_acpi_pdev_name
);
8949 if (tpacpi_sensors_pdev
)
8950 platform_device_unregister(tpacpi_sensors_pdev
);
8952 platform_device_unregister(tpacpi_pdev
);
8954 if (tp_features
.sensors_pdrv_attrs_registered
)
8955 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
8956 if (tp_features
.platform_drv_attrs_registered
)
8957 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
8959 if (tp_features
.sensors_pdrv_registered
)
8960 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
8962 if (tp_features
.platform_drv_registered
)
8963 platform_driver_unregister(&tpacpi_pdriver
);
8966 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
8969 destroy_workqueue(tpacpi_wq
);
8971 kfree(thinkpad_id
.bios_version_str
);
8972 kfree(thinkpad_id
.ec_version_str
);
8973 kfree(thinkpad_id
.model_str
);
8974 kfree(thinkpad_id
.nummodel_str
);
8978 static int __init
thinkpad_acpi_module_init(void)
8982 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
8984 /* Parameter checking */
8985 if (hotkey_report_mode
> 2)
8988 /* Driver-level probe */
8990 ret
= get_thinkpad_model_data(&thinkpad_id
);
8992 pr_err("unable to get DMI data: %d\n", ret
);
8993 thinkpad_acpi_module_exit();
8996 ret
= probe_for_thinkpad();
8998 thinkpad_acpi_module_exit();
9002 /* Driver initialization */
9004 thinkpad_acpi_init_banner();
9005 tpacpi_check_outdated_fw();
9007 TPACPI_ACPIHANDLE_INIT(ecrd
);
9008 TPACPI_ACPIHANDLE_INIT(ecwr
);
9010 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
9012 thinkpad_acpi_module_exit();
9016 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
9018 pr_err("unable to create proc dir " TPACPI_PROC_DIR
"\n");
9019 thinkpad_acpi_module_exit();
9023 ret
= platform_driver_register(&tpacpi_pdriver
);
9025 pr_err("unable to register main platform driver\n");
9026 thinkpad_acpi_module_exit();
9029 tp_features
.platform_drv_registered
= 1;
9031 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
9033 pr_err("unable to register hwmon platform driver\n");
9034 thinkpad_acpi_module_exit();
9037 tp_features
.sensors_pdrv_registered
= 1;
9039 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
9041 tp_features
.platform_drv_attrs_registered
= 1;
9042 ret
= tpacpi_create_driver_attributes(
9043 &tpacpi_hwmon_pdriver
.driver
);
9046 pr_err("unable to create sysfs driver attributes\n");
9047 thinkpad_acpi_module_exit();
9050 tp_features
.sensors_pdrv_attrs_registered
= 1;
9053 /* Device initialization */
9054 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
9056 if (IS_ERR(tpacpi_pdev
)) {
9057 ret
= PTR_ERR(tpacpi_pdev
);
9059 pr_err("unable to register platform device\n");
9060 thinkpad_acpi_module_exit();
9063 tpacpi_sensors_pdev
= platform_device_register_simple(
9064 TPACPI_HWMON_DRVR_NAME
,
9066 if (IS_ERR(tpacpi_sensors_pdev
)) {
9067 ret
= PTR_ERR(tpacpi_sensors_pdev
);
9068 tpacpi_sensors_pdev
= NULL
;
9069 pr_err("unable to register hwmon platform device\n");
9070 thinkpad_acpi_module_exit();
9073 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
9074 &dev_attr_thinkpad_acpi_pdev_name
);
9076 pr_err("unable to create sysfs hwmon device attributes\n");
9077 thinkpad_acpi_module_exit();
9080 tp_features
.sensors_pdev_attrs_registered
= 1;
9081 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
9082 if (IS_ERR(tpacpi_hwmon
)) {
9083 ret
= PTR_ERR(tpacpi_hwmon
);
9084 tpacpi_hwmon
= NULL
;
9085 pr_err("unable to register hwmon device\n");
9086 thinkpad_acpi_module_exit();
9089 mutex_init(&tpacpi_inputdev_send_mutex
);
9090 tpacpi_inputdev
= input_allocate_device();
9091 if (!tpacpi_inputdev
) {
9092 pr_err("unable to allocate input device\n");
9093 thinkpad_acpi_module_exit();
9096 /* Prepare input device, but don't register */
9097 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
9098 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
9099 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
9100 tpacpi_inputdev
->id
.vendor
= thinkpad_id
.vendor
;
9101 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
9102 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
9103 tpacpi_inputdev
->dev
.parent
= &tpacpi_pdev
->dev
;
9106 /* Init subdriver dependencies */
9107 tpacpi_detect_brightness_capabilities();
9109 /* Init subdrivers */
9110 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
9111 ret
= ibm_init(&ibms_init
[i
]);
9112 if (ret
>= 0 && *ibms_init
[i
].param
)
9113 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
9115 thinkpad_acpi_module_exit();
9120 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
9122 ret
= input_register_device(tpacpi_inputdev
);
9124 pr_err("unable to register input device\n");
9125 thinkpad_acpi_module_exit();
9128 tp_features
.input_device_registered
= 1;
9134 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
9137 * This will autoload the driver in almost every ThinkPad
9138 * in widespread use.
9140 * Only _VERY_ old models, like the 240, 240x and 570 lack
9141 * the HKEY event interface.
9143 MODULE_DEVICE_TABLE(acpi
, ibm_htk_device_ids
);
9146 * DMI matching for module autoloading
9148 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9149 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9151 * Only models listed in thinkwiki will be supported, so add yours
9152 * if it is not there yet.
9154 #define IBM_BIOS_MODULE_ALIAS(__type) \
9155 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
9157 /* Ancient thinkpad BIOSes have to be identified by
9158 * BIOS type or model number, and there are far less
9159 * BIOS types than model numbers... */
9160 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
9162 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9163 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
9164 MODULE_DESCRIPTION(TPACPI_DESC
);
9165 MODULE_VERSION(TPACPI_VERSION
);
9166 MODULE_LICENSE("GPL");
9168 module_init(thinkpad_acpi_module_init
);
9169 module_exit(thinkpad_acpi_module_exit
);