| 1 | /* |
| 2 | * thinkpad_acpi.c - ThinkPad ACPI Extras |
| 3 | * |
| 4 | * |
| 5 | * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> |
| 6 | * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br> |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 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 |
| 21 | * 02110-1301, USA. |
| 22 | */ |
| 23 | |
| 24 | #define TPACPI_VERSION "0.18" |
| 25 | #define TPACPI_SYSFS_VERSION 0x020101 |
| 26 | |
| 27 | /* |
| 28 | * Changelog: |
| 29 | * 2007-10-20 changelog trimmed down |
| 30 | * |
| 31 | * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to |
| 32 | * drivers/misc. |
| 33 | * |
| 34 | * 2006-11-22 0.13 new maintainer |
| 35 | * changelog now lives in git commit history, and will |
| 36 | * not be updated further in-file. |
| 37 | * |
| 38 | * 2005-03-17 0.11 support for 600e, 770x |
| 39 | * thanks to Jamie Lentin <lentinj@dial.pipex.com> |
| 40 | * |
| 41 | * 2005-01-16 0.9 use MODULE_VERSION |
| 42 | * thanks to Henrik Brix Andersen <brix@gentoo.org> |
| 43 | * fix parameter passing on module loading |
| 44 | * thanks to Rusty Russell <rusty@rustcorp.com.au> |
| 45 | * thanks to Jim Radford <radford@blackbean.org> |
| 46 | * 2004-11-08 0.8 fix init error case, don't return from a macro |
| 47 | * thanks to Chris Wright <chrisw@osdl.org> |
| 48 | */ |
| 49 | |
| 50 | #include <linux/kernel.h> |
| 51 | #include <linux/module.h> |
| 52 | #include <linux/init.h> |
| 53 | #include <linux/types.h> |
| 54 | #include <linux/string.h> |
| 55 | #include <linux/list.h> |
| 56 | #include <linux/mutex.h> |
| 57 | #include <linux/kthread.h> |
| 58 | #include <linux/freezer.h> |
| 59 | #include <linux/delay.h> |
| 60 | |
| 61 | #include <linux/nvram.h> |
| 62 | #include <linux/proc_fs.h> |
| 63 | #include <linux/sysfs.h> |
| 64 | #include <linux/backlight.h> |
| 65 | #include <linux/fb.h> |
| 66 | #include <linux/platform_device.h> |
| 67 | #include <linux/hwmon.h> |
| 68 | #include <linux/hwmon-sysfs.h> |
| 69 | #include <linux/input.h> |
| 70 | #include <asm/uaccess.h> |
| 71 | |
| 72 | #include <linux/dmi.h> |
| 73 | #include <linux/jiffies.h> |
| 74 | #include <linux/workqueue.h> |
| 75 | |
| 76 | #include <acpi/acpi_drivers.h> |
| 77 | #include <acpi/acnamesp.h> |
| 78 | |
| 79 | #include <linux/pci_ids.h> |
| 80 | |
| 81 | |
| 82 | /* ThinkPad CMOS commands */ |
| 83 | #define TP_CMOS_VOLUME_DOWN 0 |
| 84 | #define TP_CMOS_VOLUME_UP 1 |
| 85 | #define TP_CMOS_VOLUME_MUTE 2 |
| 86 | #define TP_CMOS_BRIGHTNESS_UP 4 |
| 87 | #define TP_CMOS_BRIGHTNESS_DOWN 5 |
| 88 | |
| 89 | /* NVRAM Addresses */ |
| 90 | enum tp_nvram_addr { |
| 91 | TP_NVRAM_ADDR_HK2 = 0x57, |
| 92 | TP_NVRAM_ADDR_THINKLIGHT = 0x58, |
| 93 | TP_NVRAM_ADDR_VIDEO = 0x59, |
| 94 | TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, |
| 95 | TP_NVRAM_ADDR_MIXER = 0x60, |
| 96 | }; |
| 97 | |
| 98 | /* NVRAM bit masks */ |
| 99 | enum { |
| 100 | TP_NVRAM_MASK_HKT_THINKPAD = 0x08, |
| 101 | TP_NVRAM_MASK_HKT_ZOOM = 0x20, |
| 102 | TP_NVRAM_MASK_HKT_DISPLAY = 0x40, |
| 103 | TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, |
| 104 | TP_NVRAM_MASK_THINKLIGHT = 0x10, |
| 105 | TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, |
| 106 | TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, |
| 107 | TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, |
| 108 | TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, |
| 109 | TP_NVRAM_MASK_MUTE = 0x40, |
| 110 | TP_NVRAM_MASK_HKT_VOLUME = 0x80, |
| 111 | TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, |
| 112 | TP_NVRAM_POS_LEVEL_VOLUME = 0, |
| 113 | }; |
| 114 | |
| 115 | /* ACPI HIDs */ |
| 116 | #define TPACPI_ACPI_HKEY_HID "IBM0068" |
| 117 | |
| 118 | /* Input IDs */ |
| 119 | #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ |
| 120 | #define TPACPI_HKEY_INPUT_VERSION 0x4101 |
| 121 | |
| 122 | |
| 123 | /**************************************************************************** |
| 124 | * Main driver |
| 125 | */ |
| 126 | |
| 127 | #define TPACPI_NAME "thinkpad" |
| 128 | #define TPACPI_DESC "ThinkPad ACPI Extras" |
| 129 | #define TPACPI_FILE TPACPI_NAME "_acpi" |
| 130 | #define TPACPI_URL "http://ibm-acpi.sf.net/" |
| 131 | #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" |
| 132 | |
| 133 | #define TPACPI_PROC_DIR "ibm" |
| 134 | #define TPACPI_ACPI_EVENT_PREFIX "ibm" |
| 135 | #define TPACPI_DRVR_NAME TPACPI_FILE |
| 136 | #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" |
| 137 | |
| 138 | #define TPACPI_MAX_ACPI_ARGS 3 |
| 139 | |
| 140 | /* Debugging */ |
| 141 | #define TPACPI_LOG TPACPI_FILE ": " |
| 142 | #define TPACPI_ERR KERN_ERR TPACPI_LOG |
| 143 | #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG |
| 144 | #define TPACPI_INFO KERN_INFO TPACPI_LOG |
| 145 | #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG |
| 146 | |
| 147 | #define TPACPI_DBG_ALL 0xffff |
| 148 | #define TPACPI_DBG_ALL 0xffff |
| 149 | #define TPACPI_DBG_INIT 0x0001 |
| 150 | #define TPACPI_DBG_EXIT 0x0002 |
| 151 | #define dbg_printk(a_dbg_level, format, arg...) \ |
| 152 | do { if (dbg_level & a_dbg_level) \ |
| 153 | printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \ |
| 154 | } while (0) |
| 155 | #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
| 156 | #define vdbg_printk(a_dbg_level, format, arg...) \ |
| 157 | dbg_printk(a_dbg_level, format, ## arg) |
| 158 | static const char *str_supported(int is_supported); |
| 159 | #else |
| 160 | #define vdbg_printk(a_dbg_level, format, arg...) |
| 161 | #endif |
| 162 | |
| 163 | #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") |
| 164 | #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") |
| 165 | #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) |
| 166 | |
| 167 | |
| 168 | /**************************************************************************** |
| 169 | * Driver-wide structs and misc. variables |
| 170 | */ |
| 171 | |
| 172 | struct ibm_struct; |
| 173 | |
| 174 | struct tp_acpi_drv_struct { |
| 175 | const struct acpi_device_id *hid; |
| 176 | struct acpi_driver *driver; |
| 177 | |
| 178 | void (*notify) (struct ibm_struct *, u32); |
| 179 | acpi_handle *handle; |
| 180 | u32 type; |
| 181 | struct acpi_device *device; |
| 182 | }; |
| 183 | |
| 184 | struct ibm_struct { |
| 185 | char *name; |
| 186 | |
| 187 | int (*read) (char *); |
| 188 | int (*write) (char *); |
| 189 | void (*exit) (void); |
| 190 | void (*resume) (void); |
| 191 | |
| 192 | struct list_head all_drivers; |
| 193 | |
| 194 | struct tp_acpi_drv_struct *acpi; |
| 195 | |
| 196 | struct { |
| 197 | u8 acpi_driver_registered:1; |
| 198 | u8 acpi_notify_installed:1; |
| 199 | u8 proc_created:1; |
| 200 | u8 init_called:1; |
| 201 | u8 experimental:1; |
| 202 | } flags; |
| 203 | }; |
| 204 | |
| 205 | struct ibm_init_struct { |
| 206 | char param[32]; |
| 207 | |
| 208 | int (*init) (struct ibm_init_struct *); |
| 209 | struct ibm_struct *data; |
| 210 | }; |
| 211 | |
| 212 | static struct { |
| 213 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
| 214 | u32 bay_status:1; |
| 215 | u32 bay_eject:1; |
| 216 | u32 bay_status2:1; |
| 217 | u32 bay_eject2:1; |
| 218 | #endif |
| 219 | u32 bluetooth:1; |
| 220 | u32 hotkey:1; |
| 221 | u32 hotkey_mask:1; |
| 222 | u32 hotkey_wlsw:1; |
| 223 | u32 light:1; |
| 224 | u32 light_status:1; |
| 225 | u32 bright_16levels:1; |
| 226 | u32 wan:1; |
| 227 | u32 fan_ctrl_status_undef:1; |
| 228 | u32 input_device_registered:1; |
| 229 | u32 platform_drv_registered:1; |
| 230 | u32 platform_drv_attrs_registered:1; |
| 231 | u32 sensors_pdrv_registered:1; |
| 232 | u32 sensors_pdrv_attrs_registered:1; |
| 233 | u32 sensors_pdev_attrs_registered:1; |
| 234 | u32 hotkey_poll_active:1; |
| 235 | } tp_features; |
| 236 | |
| 237 | struct thinkpad_id_data { |
| 238 | unsigned int vendor; /* ThinkPad vendor: |
| 239 | * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ |
| 240 | |
| 241 | char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ |
| 242 | char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ |
| 243 | |
| 244 | u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */ |
| 245 | u16 ec_model; |
| 246 | |
| 247 | char *model_str; |
| 248 | }; |
| 249 | static struct thinkpad_id_data thinkpad_id; |
| 250 | |
| 251 | static enum { |
| 252 | TPACPI_LIFE_INIT = 0, |
| 253 | TPACPI_LIFE_RUNNING, |
| 254 | TPACPI_LIFE_EXITING, |
| 255 | } tpacpi_lifecycle; |
| 256 | |
| 257 | static int experimental; |
| 258 | static u32 dbg_level; |
| 259 | |
| 260 | /**************************************************************************** |
| 261 | **************************************************************************** |
| 262 | * |
| 263 | * ACPI Helpers and device model |
| 264 | * |
| 265 | **************************************************************************** |
| 266 | ****************************************************************************/ |
| 267 | |
| 268 | /************************************************************************* |
| 269 | * ACPI basic handles |
| 270 | */ |
| 271 | |
| 272 | static acpi_handle root_handle; |
| 273 | |
| 274 | #define TPACPI_HANDLE(object, parent, paths...) \ |
| 275 | static acpi_handle object##_handle; \ |
| 276 | static acpi_handle *object##_parent = &parent##_handle; \ |
| 277 | static char *object##_path; \ |
| 278 | static char *object##_paths[] = { paths } |
| 279 | |
| 280 | TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ |
| 281 | "\\_SB.PCI.ISA.EC", /* 570 */ |
| 282 | "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ |
| 283 | "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ |
| 284 | "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ |
| 285 | "\\_SB.PCI0.ICH3.EC0", /* R31 */ |
| 286 | "\\_SB.PCI0.LPC.EC", /* all others */ |
| 287 | ); |
| 288 | |
| 289 | TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ |
| 290 | TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ |
| 291 | |
| 292 | TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ |
| 293 | /* T4x, X31, X40 */ |
| 294 | "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ |
| 295 | "\\CMS", /* R40, R40e */ |
| 296 | ); /* all others */ |
| 297 | |
| 298 | TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ |
| 299 | "^HKEY", /* R30, R31 */ |
| 300 | "HKEY", /* all others */ |
| 301 | ); /* 570 */ |
| 302 | |
| 303 | |
| 304 | /************************************************************************* |
| 305 | * ACPI helpers |
| 306 | */ |
| 307 | |
| 308 | static int acpi_evalf(acpi_handle handle, |
| 309 | void *res, char *method, char *fmt, ...) |
| 310 | { |
| 311 | char *fmt0 = fmt; |
| 312 | struct acpi_object_list params; |
| 313 | union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; |
| 314 | struct acpi_buffer result, *resultp; |
| 315 | union acpi_object out_obj; |
| 316 | acpi_status status; |
| 317 | va_list ap; |
| 318 | char res_type; |
| 319 | int success; |
| 320 | int quiet; |
| 321 | |
| 322 | if (!*fmt) { |
| 323 | printk(TPACPI_ERR "acpi_evalf() called with empty format\n"); |
| 324 | return 0; |
| 325 | } |
| 326 | |
| 327 | if (*fmt == 'q') { |
| 328 | quiet = 1; |
| 329 | fmt++; |
| 330 | } else |
| 331 | quiet = 0; |
| 332 | |
| 333 | res_type = *(fmt++); |
| 334 | |
| 335 | params.count = 0; |
| 336 | params.pointer = &in_objs[0]; |
| 337 | |
| 338 | va_start(ap, fmt); |
| 339 | while (*fmt) { |
| 340 | char c = *(fmt++); |
| 341 | switch (c) { |
| 342 | case 'd': /* int */ |
| 343 | in_objs[params.count].integer.value = va_arg(ap, int); |
| 344 | in_objs[params.count++].type = ACPI_TYPE_INTEGER; |
| 345 | break; |
| 346 | /* add more types as needed */ |
| 347 | default: |
| 348 | printk(TPACPI_ERR "acpi_evalf() called " |
| 349 | "with invalid format character '%c'\n", c); |
| 350 | return 0; |
| 351 | } |
| 352 | } |
| 353 | va_end(ap); |
| 354 | |
| 355 | if (res_type != 'v') { |
| 356 | result.length = sizeof(out_obj); |
| 357 | result.pointer = &out_obj; |
| 358 | resultp = &result; |
| 359 | } else |
| 360 | resultp = NULL; |
| 361 | |
| 362 | status = acpi_evaluate_object(handle, method, ¶ms, resultp); |
| 363 | |
| 364 | switch (res_type) { |
| 365 | case 'd': /* int */ |
| 366 | if (res) |
| 367 | *(int *)res = out_obj.integer.value; |
| 368 | success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; |
| 369 | break; |
| 370 | case 'v': /* void */ |
| 371 | success = status == AE_OK; |
| 372 | break; |
| 373 | /* add more types as needed */ |
| 374 | default: |
| 375 | printk(TPACPI_ERR "acpi_evalf() called " |
| 376 | "with invalid format character '%c'\n", res_type); |
| 377 | return 0; |
| 378 | } |
| 379 | |
| 380 | if (!success && !quiet) |
| 381 | printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", |
| 382 | method, fmt0, status); |
| 383 | |
| 384 | return success; |
| 385 | } |
| 386 | |
| 387 | static int acpi_ec_read(int i, u8 *p) |
| 388 | { |
| 389 | int v; |
| 390 | |
| 391 | if (ecrd_handle) { |
| 392 | if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) |
| 393 | return 0; |
| 394 | *p = v; |
| 395 | } else { |
| 396 | if (ec_read(i, p) < 0) |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | return 1; |
| 401 | } |
| 402 | |
| 403 | static int acpi_ec_write(int i, u8 v) |
| 404 | { |
| 405 | if (ecwr_handle) { |
| 406 | if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) |
| 407 | return 0; |
| 408 | } else { |
| 409 | if (ec_write(i, v) < 0) |
| 410 | return 0; |
| 411 | } |
| 412 | |
| 413 | return 1; |
| 414 | } |
| 415 | |
| 416 | static int _sta(acpi_handle handle) |
| 417 | { |
| 418 | int status; |
| 419 | |
| 420 | if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) |
| 421 | status = 0; |
| 422 | |
| 423 | return status; |
| 424 | } |
| 425 | |
| 426 | static int issue_thinkpad_cmos_command(int cmos_cmd) |
| 427 | { |
| 428 | if (!cmos_handle) |
| 429 | return -ENXIO; |
| 430 | |
| 431 | if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) |
| 432 | return -EIO; |
| 433 | |
| 434 | return 0; |
| 435 | } |
| 436 | |
| 437 | /************************************************************************* |
| 438 | * ACPI device model |
| 439 | */ |
| 440 | |
| 441 | #define TPACPI_ACPIHANDLE_INIT(object) \ |
| 442 | drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ |
| 443 | object##_paths, ARRAY_SIZE(object##_paths), &object##_path) |
| 444 | |
| 445 | static void drv_acpi_handle_init(char *name, |
| 446 | acpi_handle *handle, acpi_handle parent, |
| 447 | char **paths, int num_paths, char **path) |
| 448 | { |
| 449 | int i; |
| 450 | acpi_status status; |
| 451 | |
| 452 | vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", |
| 453 | name); |
| 454 | |
| 455 | for (i = 0; i < num_paths; i++) { |
| 456 | status = acpi_get_handle(parent, paths[i], handle); |
| 457 | if (ACPI_SUCCESS(status)) { |
| 458 | *path = paths[i]; |
| 459 | dbg_printk(TPACPI_DBG_INIT, |
| 460 | "Found ACPI handle %s for %s\n", |
| 461 | *path, name); |
| 462 | return; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", |
| 467 | name); |
| 468 | *handle = NULL; |
| 469 | } |
| 470 | |
| 471 | static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) |
| 472 | { |
| 473 | struct ibm_struct *ibm = data; |
| 474 | |
| 475 | if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
| 476 | return; |
| 477 | |
| 478 | if (!ibm || !ibm->acpi || !ibm->acpi->notify) |
| 479 | return; |
| 480 | |
| 481 | ibm->acpi->notify(ibm, event); |
| 482 | } |
| 483 | |
| 484 | static int __init setup_acpi_notify(struct ibm_struct *ibm) |
| 485 | { |
| 486 | acpi_status status; |
| 487 | int rc; |
| 488 | |
| 489 | BUG_ON(!ibm->acpi); |
| 490 | |
| 491 | if (!*ibm->acpi->handle) |
| 492 | return 0; |
| 493 | |
| 494 | vdbg_printk(TPACPI_DBG_INIT, |
| 495 | "setting up ACPI notify for %s\n", ibm->name); |
| 496 | |
| 497 | rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); |
| 498 | if (rc < 0) { |
| 499 | printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n", |
| 500 | ibm->name, rc); |
| 501 | return -ENODEV; |
| 502 | } |
| 503 | |
| 504 | acpi_driver_data(ibm->acpi->device) = ibm; |
| 505 | sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", |
| 506 | TPACPI_ACPI_EVENT_PREFIX, |
| 507 | ibm->name); |
| 508 | |
| 509 | status = acpi_install_notify_handler(*ibm->acpi->handle, |
| 510 | ibm->acpi->type, dispatch_acpi_notify, ibm); |
| 511 | if (ACPI_FAILURE(status)) { |
| 512 | if (status == AE_ALREADY_EXISTS) { |
| 513 | printk(TPACPI_NOTICE |
| 514 | "another device driver is already " |
| 515 | "handling %s events\n", ibm->name); |
| 516 | } else { |
| 517 | printk(TPACPI_ERR |
| 518 | "acpi_install_notify_handler(%s) failed: %d\n", |
| 519 | ibm->name, status); |
| 520 | } |
| 521 | return -ENODEV; |
| 522 | } |
| 523 | ibm->flags.acpi_notify_installed = 1; |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | static int __init tpacpi_device_add(struct acpi_device *device) |
| 528 | { |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) |
| 533 | { |
| 534 | int rc; |
| 535 | |
| 536 | dbg_printk(TPACPI_DBG_INIT, |
| 537 | "registering %s as an ACPI driver\n", ibm->name); |
| 538 | |
| 539 | BUG_ON(!ibm->acpi); |
| 540 | |
| 541 | ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); |
| 542 | if (!ibm->acpi->driver) { |
| 543 | printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n"); |
| 544 | return -ENOMEM; |
| 545 | } |
| 546 | |
| 547 | sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); |
| 548 | ibm->acpi->driver->ids = ibm->acpi->hid; |
| 549 | |
| 550 | ibm->acpi->driver->ops.add = &tpacpi_device_add; |
| 551 | |
| 552 | rc = acpi_bus_register_driver(ibm->acpi->driver); |
| 553 | if (rc < 0) { |
| 554 | printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n", |
| 555 | ibm->name, rc); |
| 556 | kfree(ibm->acpi->driver); |
| 557 | ibm->acpi->driver = NULL; |
| 558 | } else if (!rc) |
| 559 | ibm->flags.acpi_driver_registered = 1; |
| 560 | |
| 561 | return rc; |
| 562 | } |
| 563 | |
| 564 | |
| 565 | /**************************************************************************** |
| 566 | **************************************************************************** |
| 567 | * |
| 568 | * Procfs Helpers |
| 569 | * |
| 570 | **************************************************************************** |
| 571 | ****************************************************************************/ |
| 572 | |
| 573 | static int dispatch_procfs_read(char *page, char **start, off_t off, |
| 574 | int count, int *eof, void *data) |
| 575 | { |
| 576 | struct ibm_struct *ibm = data; |
| 577 | int len; |
| 578 | |
| 579 | if (!ibm || !ibm->read) |
| 580 | return -EINVAL; |
| 581 | |
| 582 | len = ibm->read(page); |
| 583 | if (len < 0) |
| 584 | return len; |
| 585 | |
| 586 | if (len <= off + count) |
| 587 | *eof = 1; |
| 588 | *start = page + off; |
| 589 | len -= off; |
| 590 | if (len > count) |
| 591 | len = count; |
| 592 | if (len < 0) |
| 593 | len = 0; |
| 594 | |
| 595 | return len; |
| 596 | } |
| 597 | |
| 598 | static int dispatch_procfs_write(struct file *file, |
| 599 | const char __user *userbuf, |
| 600 | unsigned long count, void *data) |
| 601 | { |
| 602 | struct ibm_struct *ibm = data; |
| 603 | char *kernbuf; |
| 604 | int ret; |
| 605 | |
| 606 | if (!ibm || !ibm->write) |
| 607 | return -EINVAL; |
| 608 | |
| 609 | kernbuf = kmalloc(count + 2, GFP_KERNEL); |
| 610 | if (!kernbuf) |
| 611 | return -ENOMEM; |
| 612 | |
| 613 | if (copy_from_user(kernbuf, userbuf, count)) { |
| 614 | kfree(kernbuf); |
| 615 | return -EFAULT; |
| 616 | } |
| 617 | |
| 618 | kernbuf[count] = 0; |
| 619 | strcat(kernbuf, ","); |
| 620 | ret = ibm->write(kernbuf); |
| 621 | if (ret == 0) |
| 622 | ret = count; |
| 623 | |
| 624 | kfree(kernbuf); |
| 625 | |
| 626 | return ret; |
| 627 | } |
| 628 | |
| 629 | static char *next_cmd(char **cmds) |
| 630 | { |
| 631 | char *start = *cmds; |
| 632 | char *end; |
| 633 | |
| 634 | while ((end = strchr(start, ',')) && end == start) |
| 635 | start = end + 1; |
| 636 | |
| 637 | if (!end) |
| 638 | return NULL; |
| 639 | |
| 640 | *end = 0; |
| 641 | *cmds = end + 1; |
| 642 | return start; |
| 643 | } |
| 644 | |
| 645 | |
| 646 | /**************************************************************************** |
| 647 | **************************************************************************** |
| 648 | * |
| 649 | * Device model: input, hwmon and platform |
| 650 | * |
| 651 | **************************************************************************** |
| 652 | ****************************************************************************/ |
| 653 | |
| 654 | static struct platform_device *tpacpi_pdev; |
| 655 | static struct platform_device *tpacpi_sensors_pdev; |
| 656 | static struct device *tpacpi_hwmon; |
| 657 | static struct input_dev *tpacpi_inputdev; |
| 658 | static struct mutex tpacpi_inputdev_send_mutex; |
| 659 | static LIST_HEAD(tpacpi_all_drivers); |
| 660 | |
| 661 | static int tpacpi_resume_handler(struct platform_device *pdev) |
| 662 | { |
| 663 | struct ibm_struct *ibm, *itmp; |
| 664 | |
| 665 | list_for_each_entry_safe(ibm, itmp, |
| 666 | &tpacpi_all_drivers, |
| 667 | all_drivers) { |
| 668 | if (ibm->resume) |
| 669 | (ibm->resume)(); |
| 670 | } |
| 671 | |
| 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | static struct platform_driver tpacpi_pdriver = { |
| 676 | .driver = { |
| 677 | .name = TPACPI_DRVR_NAME, |
| 678 | .owner = THIS_MODULE, |
| 679 | }, |
| 680 | .resume = tpacpi_resume_handler, |
| 681 | }; |
| 682 | |
| 683 | static struct platform_driver tpacpi_hwmon_pdriver = { |
| 684 | .driver = { |
| 685 | .name = TPACPI_HWMON_DRVR_NAME, |
| 686 | .owner = THIS_MODULE, |
| 687 | }, |
| 688 | }; |
| 689 | |
| 690 | /************************************************************************* |
| 691 | * sysfs support helpers |
| 692 | */ |
| 693 | |
| 694 | struct attribute_set { |
| 695 | unsigned int members, max_members; |
| 696 | struct attribute_group group; |
| 697 | }; |
| 698 | |
| 699 | struct attribute_set_obj { |
| 700 | struct attribute_set s; |
| 701 | struct attribute *a; |
| 702 | } __attribute__((packed)); |
| 703 | |
| 704 | static struct attribute_set *create_attr_set(unsigned int max_members, |
| 705 | const char *name) |
| 706 | { |
| 707 | struct attribute_set_obj *sobj; |
| 708 | |
| 709 | if (max_members == 0) |
| 710 | return NULL; |
| 711 | |
| 712 | /* Allocates space for implicit NULL at the end too */ |
| 713 | sobj = kzalloc(sizeof(struct attribute_set_obj) + |
| 714 | max_members * sizeof(struct attribute *), |
| 715 | GFP_KERNEL); |
| 716 | if (!sobj) |
| 717 | return NULL; |
| 718 | sobj->s.max_members = max_members; |
| 719 | sobj->s.group.attrs = &sobj->a; |
| 720 | sobj->s.group.name = name; |
| 721 | |
| 722 | return &sobj->s; |
| 723 | } |
| 724 | |
| 725 | #define destroy_attr_set(_set) \ |
| 726 | kfree(_set); |
| 727 | |
| 728 | /* not multi-threaded safe, use it in a single thread per set */ |
| 729 | static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) |
| 730 | { |
| 731 | if (!s || !attr) |
| 732 | return -EINVAL; |
| 733 | |
| 734 | if (s->members >= s->max_members) |
| 735 | return -ENOMEM; |
| 736 | |
| 737 | s->group.attrs[s->members] = attr; |
| 738 | s->members++; |
| 739 | |
| 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | static int add_many_to_attr_set(struct attribute_set *s, |
| 744 | struct attribute **attr, |
| 745 | unsigned int count) |
| 746 | { |
| 747 | int i, res; |
| 748 | |
| 749 | for (i = 0; i < count; i++) { |
| 750 | res = add_to_attr_set(s, attr[i]); |
| 751 | if (res) |
| 752 | return res; |
| 753 | } |
| 754 | |
| 755 | return 0; |
| 756 | } |
| 757 | |
| 758 | static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) |
| 759 | { |
| 760 | sysfs_remove_group(kobj, &s->group); |
| 761 | destroy_attr_set(s); |
| 762 | } |
| 763 | |
| 764 | #define register_attr_set_with_sysfs(_attr_set, _kobj) \ |
| 765 | sysfs_create_group(_kobj, &_attr_set->group) |
| 766 | |
| 767 | static int parse_strtoul(const char *buf, |
| 768 | unsigned long max, unsigned long *value) |
| 769 | { |
| 770 | char *endp; |
| 771 | |
| 772 | while (*buf && isspace(*buf)) |
| 773 | buf++; |
| 774 | *value = simple_strtoul(buf, &endp, 0); |
| 775 | while (*endp && isspace(*endp)) |
| 776 | endp++; |
| 777 | if (*endp || *value > max) |
| 778 | return -EINVAL; |
| 779 | |
| 780 | return 0; |
| 781 | } |
| 782 | |
| 783 | /************************************************************************* |
| 784 | * thinkpad-acpi driver attributes |
| 785 | */ |
| 786 | |
| 787 | /* interface_version --------------------------------------------------- */ |
| 788 | static ssize_t tpacpi_driver_interface_version_show( |
| 789 | struct device_driver *drv, |
| 790 | char *buf) |
| 791 | { |
| 792 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); |
| 793 | } |
| 794 | |
| 795 | static DRIVER_ATTR(interface_version, S_IRUGO, |
| 796 | tpacpi_driver_interface_version_show, NULL); |
| 797 | |
| 798 | /* debug_level --------------------------------------------------------- */ |
| 799 | static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, |
| 800 | char *buf) |
| 801 | { |
| 802 | return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); |
| 803 | } |
| 804 | |
| 805 | static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, |
| 806 | const char *buf, size_t count) |
| 807 | { |
| 808 | unsigned long t; |
| 809 | |
| 810 | if (parse_strtoul(buf, 0xffff, &t)) |
| 811 | return -EINVAL; |
| 812 | |
| 813 | dbg_level = t; |
| 814 | |
| 815 | return count; |
| 816 | } |
| 817 | |
| 818 | static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, |
| 819 | tpacpi_driver_debug_show, tpacpi_driver_debug_store); |
| 820 | |
| 821 | /* version ------------------------------------------------------------- */ |
| 822 | static ssize_t tpacpi_driver_version_show(struct device_driver *drv, |
| 823 | char *buf) |
| 824 | { |
| 825 | return snprintf(buf, PAGE_SIZE, "%s v%s\n", |
| 826 | TPACPI_DESC, TPACPI_VERSION); |
| 827 | } |
| 828 | |
| 829 | static DRIVER_ATTR(version, S_IRUGO, |
| 830 | tpacpi_driver_version_show, NULL); |
| 831 | |
| 832 | /* --------------------------------------------------------------------- */ |
| 833 | |
| 834 | static struct driver_attribute *tpacpi_driver_attributes[] = { |
| 835 | &driver_attr_debug_level, &driver_attr_version, |
| 836 | &driver_attr_interface_version, |
| 837 | }; |
| 838 | |
| 839 | static int __init tpacpi_create_driver_attributes(struct device_driver *drv) |
| 840 | { |
| 841 | int i, res; |
| 842 | |
| 843 | i = 0; |
| 844 | res = 0; |
| 845 | while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { |
| 846 | res = driver_create_file(drv, tpacpi_driver_attributes[i]); |
| 847 | i++; |
| 848 | } |
| 849 | |
| 850 | return res; |
| 851 | } |
| 852 | |
| 853 | static void tpacpi_remove_driver_attributes(struct device_driver *drv) |
| 854 | { |
| 855 | int i; |
| 856 | |
| 857 | for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) |
| 858 | driver_remove_file(drv, tpacpi_driver_attributes[i]); |
| 859 | } |
| 860 | |
| 861 | /**************************************************************************** |
| 862 | **************************************************************************** |
| 863 | * |
| 864 | * Subdrivers |
| 865 | * |
| 866 | **************************************************************************** |
| 867 | ****************************************************************************/ |
| 868 | |
| 869 | /************************************************************************* |
| 870 | * thinkpad-acpi init subdriver |
| 871 | */ |
| 872 | |
| 873 | static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) |
| 874 | { |
| 875 | printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); |
| 876 | printk(TPACPI_INFO "%s\n", TPACPI_URL); |
| 877 | |
| 878 | printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n", |
| 879 | (thinkpad_id.bios_version_str) ? |
| 880 | thinkpad_id.bios_version_str : "unknown", |
| 881 | (thinkpad_id.ec_version_str) ? |
| 882 | thinkpad_id.ec_version_str : "unknown"); |
| 883 | |
| 884 | if (thinkpad_id.vendor && thinkpad_id.model_str) |
| 885 | printk(TPACPI_INFO "%s %s\n", |
| 886 | (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? |
| 887 | "IBM" : ((thinkpad_id.vendor == |
| 888 | PCI_VENDOR_ID_LENOVO) ? |
| 889 | "Lenovo" : "Unknown vendor"), |
| 890 | thinkpad_id.model_str); |
| 891 | |
| 892 | return 0; |
| 893 | } |
| 894 | |
| 895 | static int thinkpad_acpi_driver_read(char *p) |
| 896 | { |
| 897 | int len = 0; |
| 898 | |
| 899 | len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC); |
| 900 | len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION); |
| 901 | |
| 902 | return len; |
| 903 | } |
| 904 | |
| 905 | static struct ibm_struct thinkpad_acpi_driver_data = { |
| 906 | .name = "driver", |
| 907 | .read = thinkpad_acpi_driver_read, |
| 908 | }; |
| 909 | |
| 910 | /************************************************************************* |
| 911 | * Hotkey subdriver |
| 912 | */ |
| 913 | |
| 914 | enum { /* hot key scan codes (derived from ACPI DSDT) */ |
| 915 | TP_ACPI_HOTKEYSCAN_FNF1 = 0, |
| 916 | TP_ACPI_HOTKEYSCAN_FNF2, |
| 917 | TP_ACPI_HOTKEYSCAN_FNF3, |
| 918 | TP_ACPI_HOTKEYSCAN_FNF4, |
| 919 | TP_ACPI_HOTKEYSCAN_FNF5, |
| 920 | TP_ACPI_HOTKEYSCAN_FNF6, |
| 921 | TP_ACPI_HOTKEYSCAN_FNF7, |
| 922 | TP_ACPI_HOTKEYSCAN_FNF8, |
| 923 | TP_ACPI_HOTKEYSCAN_FNF9, |
| 924 | TP_ACPI_HOTKEYSCAN_FNF10, |
| 925 | TP_ACPI_HOTKEYSCAN_FNF11, |
| 926 | TP_ACPI_HOTKEYSCAN_FNF12, |
| 927 | TP_ACPI_HOTKEYSCAN_FNBACKSPACE, |
| 928 | TP_ACPI_HOTKEYSCAN_FNINSERT, |
| 929 | TP_ACPI_HOTKEYSCAN_FNDELETE, |
| 930 | TP_ACPI_HOTKEYSCAN_FNHOME, |
| 931 | TP_ACPI_HOTKEYSCAN_FNEND, |
| 932 | TP_ACPI_HOTKEYSCAN_FNPAGEUP, |
| 933 | TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, |
| 934 | TP_ACPI_HOTKEYSCAN_FNSPACE, |
| 935 | TP_ACPI_HOTKEYSCAN_VOLUMEUP, |
| 936 | TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, |
| 937 | TP_ACPI_HOTKEYSCAN_MUTE, |
| 938 | TP_ACPI_HOTKEYSCAN_THINKPAD, |
| 939 | }; |
| 940 | |
| 941 | enum { /* Keys available through NVRAM polling */ |
| 942 | TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, |
| 943 | TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, |
| 944 | }; |
| 945 | |
| 946 | enum { /* Positions of some of the keys in hotkey masks */ |
| 947 | TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, |
| 948 | TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, |
| 949 | TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, |
| 950 | TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, |
| 951 | TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, |
| 952 | TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, |
| 953 | TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, |
| 954 | TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, |
| 955 | TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, |
| 956 | TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, |
| 957 | TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, |
| 958 | }; |
| 959 | |
| 960 | enum { /* NVRAM to ACPI HKEY group map */ |
| 961 | TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | |
| 962 | TP_ACPI_HKEY_ZOOM_MASK | |
| 963 | TP_ACPI_HKEY_DISPSWTCH_MASK | |
| 964 | TP_ACPI_HKEY_HIBERNATE_MASK, |
| 965 | TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | |
| 966 | TP_ACPI_HKEY_BRGHTDWN_MASK, |
| 967 | TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | |
| 968 | TP_ACPI_HKEY_VOLDWN_MASK | |
| 969 | TP_ACPI_HKEY_MUTE_MASK, |
| 970 | }; |
| 971 | |
| 972 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 973 | struct tp_nvram_state { |
| 974 | u16 thinkpad_toggle:1; |
| 975 | u16 zoom_toggle:1; |
| 976 | u16 display_toggle:1; |
| 977 | u16 thinklight_toggle:1; |
| 978 | u16 hibernate_toggle:1; |
| 979 | u16 displayexp_toggle:1; |
| 980 | u16 display_state:1; |
| 981 | u16 brightness_toggle:1; |
| 982 | u16 volume_toggle:1; |
| 983 | u16 mute:1; |
| 984 | |
| 985 | u8 brightness_level; |
| 986 | u8 volume_level; |
| 987 | }; |
| 988 | |
| 989 | static struct task_struct *tpacpi_hotkey_task; |
| 990 | static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ |
| 991 | static int hotkey_poll_freq = 10; /* Hz */ |
| 992 | static struct mutex hotkey_thread_mutex; |
| 993 | static struct mutex hotkey_thread_data_mutex; |
| 994 | static unsigned int hotkey_config_change; |
| 995 | |
| 996 | #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| 997 | |
| 998 | #define hotkey_source_mask 0U |
| 999 | |
| 1000 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| 1001 | |
| 1002 | static struct mutex hotkey_mutex; |
| 1003 | |
| 1004 | static int hotkey_orig_status; |
| 1005 | static u32 hotkey_orig_mask; |
| 1006 | static u32 hotkey_all_mask; |
| 1007 | static u32 hotkey_reserved_mask; |
| 1008 | static u32 hotkey_mask; |
| 1009 | |
| 1010 | static unsigned int hotkey_report_mode; |
| 1011 | |
| 1012 | static u16 *hotkey_keycode_map; |
| 1013 | |
| 1014 | static struct attribute_set *hotkey_dev_attributes; |
| 1015 | |
| 1016 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1017 | #define HOTKEY_CONFIG_CRITICAL_START \ |
| 1018 | do { \ |
| 1019 | mutex_lock(&hotkey_thread_data_mutex); \ |
| 1020 | hotkey_config_change++; \ |
| 1021 | } while (0); |
| 1022 | #define HOTKEY_CONFIG_CRITICAL_END \ |
| 1023 | mutex_unlock(&hotkey_thread_data_mutex); |
| 1024 | #else |
| 1025 | #define HOTKEY_CONFIG_CRITICAL_START |
| 1026 | #define HOTKEY_CONFIG_CRITICAL_END |
| 1027 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| 1028 | |
| 1029 | static int hotkey_get_wlsw(int *status) |
| 1030 | { |
| 1031 | if (!acpi_evalf(hkey_handle, status, "WLSW", "d")) |
| 1032 | return -EIO; |
| 1033 | return 0; |
| 1034 | } |
| 1035 | |
| 1036 | /* |
| 1037 | * Call with hotkey_mutex held |
| 1038 | */ |
| 1039 | static int hotkey_mask_get(void) |
| 1040 | { |
| 1041 | u32 m = 0; |
| 1042 | |
| 1043 | if (tp_features.hotkey_mask) { |
| 1044 | if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) |
| 1045 | return -EIO; |
| 1046 | } |
| 1047 | hotkey_mask = m | (hotkey_source_mask & hotkey_mask); |
| 1048 | |
| 1049 | return 0; |
| 1050 | } |
| 1051 | |
| 1052 | /* |
| 1053 | * Call with hotkey_mutex held |
| 1054 | */ |
| 1055 | static int hotkey_mask_set(u32 mask) |
| 1056 | { |
| 1057 | int i; |
| 1058 | int rc = 0; |
| 1059 | |
| 1060 | if (tp_features.hotkey_mask) { |
| 1061 | HOTKEY_CONFIG_CRITICAL_START |
| 1062 | for (i = 0; i < 32; i++) { |
| 1063 | u32 m = 1 << i; |
| 1064 | /* enable in firmware mask only keys not in NVRAM |
| 1065 | * mode, but enable the key in the cached hotkey_mask |
| 1066 | * regardless of mode, or the key will end up |
| 1067 | * disabled by hotkey_mask_get() */ |
| 1068 | if (!acpi_evalf(hkey_handle, |
| 1069 | NULL, "MHKM", "vdd", i + 1, |
| 1070 | !!((mask & ~hotkey_source_mask) & m))) { |
| 1071 | rc = -EIO; |
| 1072 | break; |
| 1073 | } else { |
| 1074 | hotkey_mask = (hotkey_mask & ~m) | (mask & m); |
| 1075 | } |
| 1076 | } |
| 1077 | HOTKEY_CONFIG_CRITICAL_END |
| 1078 | |
| 1079 | /* hotkey_mask_get must be called unconditionally below */ |
| 1080 | if (!hotkey_mask_get() && !rc && |
| 1081 | (hotkey_mask & ~hotkey_source_mask) != |
| 1082 | (mask & ~hotkey_source_mask)) { |
| 1083 | printk(TPACPI_NOTICE |
| 1084 | "requested hot key mask 0x%08x, but " |
| 1085 | "firmware forced it to 0x%08x\n", |
| 1086 | mask, hotkey_mask); |
| 1087 | } |
| 1088 | } else { |
| 1089 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1090 | HOTKEY_CONFIG_CRITICAL_START |
| 1091 | hotkey_mask = mask & hotkey_source_mask; |
| 1092 | HOTKEY_CONFIG_CRITICAL_END |
| 1093 | hotkey_mask_get(); |
| 1094 | if (hotkey_mask != mask) { |
| 1095 | printk(TPACPI_NOTICE |
| 1096 | "requested hot key mask 0x%08x, " |
| 1097 | "forced to 0x%08x (NVRAM poll mask is " |
| 1098 | "0x%08x): no firmware mask support\n", |
| 1099 | mask, hotkey_mask, hotkey_source_mask); |
| 1100 | } |
| 1101 | #else |
| 1102 | hotkey_mask_get(); |
| 1103 | rc = -ENXIO; |
| 1104 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| 1105 | } |
| 1106 | |
| 1107 | return rc; |
| 1108 | } |
| 1109 | |
| 1110 | static int hotkey_status_get(int *status) |
| 1111 | { |
| 1112 | if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) |
| 1113 | return -EIO; |
| 1114 | |
| 1115 | return 0; |
| 1116 | } |
| 1117 | |
| 1118 | static int hotkey_status_set(int status) |
| 1119 | { |
| 1120 | if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) |
| 1121 | return -EIO; |
| 1122 | |
| 1123 | return 0; |
| 1124 | } |
| 1125 | |
| 1126 | static void tpacpi_input_send_radiosw(void) |
| 1127 | { |
| 1128 | int wlsw; |
| 1129 | |
| 1130 | mutex_lock(&tpacpi_inputdev_send_mutex); |
| 1131 | |
| 1132 | if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) { |
| 1133 | input_report_switch(tpacpi_inputdev, |
| 1134 | SW_RADIO, !!wlsw); |
| 1135 | input_sync(tpacpi_inputdev); |
| 1136 | } |
| 1137 | |
| 1138 | mutex_unlock(&tpacpi_inputdev_send_mutex); |
| 1139 | } |
| 1140 | |
| 1141 | static void tpacpi_input_send_key(unsigned int scancode) |
| 1142 | { |
| 1143 | unsigned int keycode; |
| 1144 | |
| 1145 | keycode = hotkey_keycode_map[scancode]; |
| 1146 | |
| 1147 | if (keycode != KEY_RESERVED) { |
| 1148 | mutex_lock(&tpacpi_inputdev_send_mutex); |
| 1149 | |
| 1150 | input_report_key(tpacpi_inputdev, keycode, 1); |
| 1151 | if (keycode == KEY_UNKNOWN) |
| 1152 | input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, |
| 1153 | scancode); |
| 1154 | input_sync(tpacpi_inputdev); |
| 1155 | |
| 1156 | input_report_key(tpacpi_inputdev, keycode, 0); |
| 1157 | if (keycode == KEY_UNKNOWN) |
| 1158 | input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, |
| 1159 | scancode); |
| 1160 | input_sync(tpacpi_inputdev); |
| 1161 | |
| 1162 | mutex_unlock(&tpacpi_inputdev_send_mutex); |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1167 | static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; |
| 1168 | |
| 1169 | static void tpacpi_hotkey_send_key(unsigned int scancode) |
| 1170 | { |
| 1171 | tpacpi_input_send_key(scancode); |
| 1172 | if (hotkey_report_mode < 2) { |
| 1173 | acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device, |
| 1174 | 0x80, 0x1001 + scancode); |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m) |
| 1179 | { |
| 1180 | u8 d; |
| 1181 | |
| 1182 | if (m & TP_NVRAM_HKEY_GROUP_HK2) { |
| 1183 | d = nvram_read_byte(TP_NVRAM_ADDR_HK2); |
| 1184 | n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); |
| 1185 | n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); |
| 1186 | n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); |
| 1187 | n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); |
| 1188 | } |
| 1189 | if (m & TP_ACPI_HKEY_THNKLGHT_MASK) { |
| 1190 | d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); |
| 1191 | n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); |
| 1192 | } |
| 1193 | if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { |
| 1194 | d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); |
| 1195 | n->displayexp_toggle = |
| 1196 | !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); |
| 1197 | } |
| 1198 | if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { |
| 1199 | d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); |
| 1200 | n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) |
| 1201 | >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; |
| 1202 | n->brightness_toggle = |
| 1203 | !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); |
| 1204 | } |
| 1205 | if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { |
| 1206 | d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); |
| 1207 | n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) |
| 1208 | >> TP_NVRAM_POS_LEVEL_VOLUME; |
| 1209 | n->mute = !!(d & TP_NVRAM_MASK_MUTE); |
| 1210 | n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); |
| 1211 | } |
| 1212 | } |
| 1213 | |
| 1214 | #define TPACPI_COMPARE_KEY(__scancode, __member) \ |
| 1215 | do { \ |
| 1216 | if ((mask & (1 << __scancode)) && \ |
| 1217 | oldn->__member != newn->__member) \ |
| 1218 | tpacpi_hotkey_send_key(__scancode); \ |
| 1219 | } while (0) |
| 1220 | |
| 1221 | #define TPACPI_MAY_SEND_KEY(__scancode) \ |
| 1222 | do { if (mask & (1 << __scancode)) \ |
| 1223 | tpacpi_hotkey_send_key(__scancode); } while (0) |
| 1224 | |
| 1225 | static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, |
| 1226 | struct tp_nvram_state *newn, |
| 1227 | u32 mask) |
| 1228 | { |
| 1229 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); |
| 1230 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); |
| 1231 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); |
| 1232 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); |
| 1233 | |
| 1234 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); |
| 1235 | |
| 1236 | TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); |
| 1237 | |
| 1238 | /* handle volume */ |
| 1239 | if (oldn->volume_toggle != newn->volume_toggle) { |
| 1240 | if (oldn->mute != newn->mute) { |
| 1241 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); |
| 1242 | } |
| 1243 | if (oldn->volume_level > newn->volume_level) { |
| 1244 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); |
| 1245 | } else if (oldn->volume_level < newn->volume_level) { |
| 1246 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); |
| 1247 | } else if (oldn->mute == newn->mute) { |
| 1248 | /* repeated key presses that didn't change state */ |
| 1249 | if (newn->mute) { |
| 1250 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); |
| 1251 | } else if (newn->volume_level != 0) { |
| 1252 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); |
| 1253 | } else { |
| 1254 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); |
| 1255 | } |
| 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | /* handle brightness */ |
| 1260 | if (oldn->brightness_toggle != newn->brightness_toggle) { |
| 1261 | if (oldn->brightness_level < newn->brightness_level) { |
| 1262 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); |
| 1263 | } else if (oldn->brightness_level > newn->brightness_level) { |
| 1264 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); |
| 1265 | } else { |
| 1266 | /* repeated key presses that didn't change state */ |
| 1267 | if (newn->brightness_level != 0) { |
| 1268 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); |
| 1269 | } else { |
| 1270 | TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); |
| 1271 | } |
| 1272 | } |
| 1273 | } |
| 1274 | } |
| 1275 | |
| 1276 | #undef TPACPI_COMPARE_KEY |
| 1277 | #undef TPACPI_MAY_SEND_KEY |
| 1278 | |
| 1279 | static int hotkey_kthread(void *data) |
| 1280 | { |
| 1281 | struct tp_nvram_state s[2]; |
| 1282 | u32 mask; |
| 1283 | unsigned int si, so; |
| 1284 | unsigned long t; |
| 1285 | unsigned int change_detector, must_reset; |
| 1286 | |
| 1287 | mutex_lock(&hotkey_thread_mutex); |
| 1288 | |
| 1289 | if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) |
| 1290 | goto exit; |
| 1291 | |
| 1292 | set_freezable(); |
| 1293 | |
| 1294 | so = 0; |
| 1295 | si = 1; |
| 1296 | t = 0; |
| 1297 | |
| 1298 | /* Initial state for compares */ |
| 1299 | mutex_lock(&hotkey_thread_data_mutex); |
| 1300 | change_detector = hotkey_config_change; |
| 1301 | mask = hotkey_source_mask & hotkey_mask; |
| 1302 | mutex_unlock(&hotkey_thread_data_mutex); |
| 1303 | hotkey_read_nvram(&s[so], mask); |
| 1304 | |
| 1305 | while (!kthread_should_stop() && hotkey_poll_freq) { |
| 1306 | if (t == 0) |
| 1307 | t = 1000/hotkey_poll_freq; |
| 1308 | t = msleep_interruptible(t); |
| 1309 | if (unlikely(kthread_should_stop())) |
| 1310 | break; |
| 1311 | must_reset = try_to_freeze(); |
| 1312 | if (t > 0 && !must_reset) |
| 1313 | continue; |
| 1314 | |
| 1315 | mutex_lock(&hotkey_thread_data_mutex); |
| 1316 | if (must_reset || hotkey_config_change != change_detector) { |
| 1317 | /* forget old state on thaw or config change */ |
| 1318 | si = so; |
| 1319 | t = 0; |
| 1320 | change_detector = hotkey_config_change; |
| 1321 | } |
| 1322 | mask = hotkey_source_mask & hotkey_mask; |
| 1323 | mutex_unlock(&hotkey_thread_data_mutex); |
| 1324 | |
| 1325 | if (likely(mask)) { |
| 1326 | hotkey_read_nvram(&s[si], mask); |
| 1327 | if (likely(si != so)) { |
| 1328 | hotkey_compare_and_issue_event(&s[so], &s[si], |
| 1329 | mask); |
| 1330 | } |
| 1331 | } |
| 1332 | |
| 1333 | so = si; |
| 1334 | si ^= 1; |
| 1335 | } |
| 1336 | |
| 1337 | exit: |
| 1338 | mutex_unlock(&hotkey_thread_mutex); |
| 1339 | return 0; |
| 1340 | } |
| 1341 | |
| 1342 | static void hotkey_poll_stop_sync(void) |
| 1343 | { |
| 1344 | if (tpacpi_hotkey_task) { |
| 1345 | if (frozen(tpacpi_hotkey_task) || |
| 1346 | freezing(tpacpi_hotkey_task)) |
| 1347 | thaw_process(tpacpi_hotkey_task); |
| 1348 | |
| 1349 | kthread_stop(tpacpi_hotkey_task); |
| 1350 | tpacpi_hotkey_task = NULL; |
| 1351 | mutex_lock(&hotkey_thread_mutex); |
| 1352 | /* at this point, the thread did exit */ |
| 1353 | mutex_unlock(&hotkey_thread_mutex); |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | /* call with hotkey_mutex held */ |
| 1358 | static void hotkey_poll_setup(int may_warn) |
| 1359 | { |
| 1360 | if ((hotkey_source_mask & hotkey_mask) != 0 && |
| 1361 | hotkey_poll_freq > 0 && |
| 1362 | (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) { |
| 1363 | if (!tpacpi_hotkey_task) { |
| 1364 | tpacpi_hotkey_task = kthread_run(hotkey_kthread, |
| 1365 | NULL, |
| 1366 | TPACPI_FILE "d"); |
| 1367 | if (IS_ERR(tpacpi_hotkey_task)) { |
| 1368 | tpacpi_hotkey_task = NULL; |
| 1369 | printk(TPACPI_ERR |
| 1370 | "could not create kernel thread " |
| 1371 | "for hotkey polling\n"); |
| 1372 | } |
| 1373 | } |
| 1374 | } else { |
| 1375 | hotkey_poll_stop_sync(); |
| 1376 | if (may_warn && |
| 1377 | hotkey_source_mask != 0 && hotkey_poll_freq == 0) { |
| 1378 | printk(TPACPI_NOTICE |
| 1379 | "hot keys 0x%08x require polling, " |
| 1380 | "which is currently disabled\n", |
| 1381 | hotkey_source_mask); |
| 1382 | } |
| 1383 | } |
| 1384 | } |
| 1385 | |
| 1386 | static void hotkey_poll_setup_safe(int may_warn) |
| 1387 | { |
| 1388 | mutex_lock(&hotkey_mutex); |
| 1389 | hotkey_poll_setup(may_warn); |
| 1390 | mutex_unlock(&hotkey_mutex); |
| 1391 | } |
| 1392 | |
| 1393 | static int hotkey_inputdev_open(struct input_dev *dev) |
| 1394 | { |
| 1395 | switch (tpacpi_lifecycle) { |
| 1396 | case TPACPI_LIFE_INIT: |
| 1397 | /* |
| 1398 | * hotkey_init will call hotkey_poll_setup_safe |
| 1399 | * at the appropriate moment |
| 1400 | */ |
| 1401 | return 0; |
| 1402 | case TPACPI_LIFE_EXITING: |
| 1403 | return -EBUSY; |
| 1404 | case TPACPI_LIFE_RUNNING: |
| 1405 | hotkey_poll_setup_safe(0); |
| 1406 | return 0; |
| 1407 | } |
| 1408 | |
| 1409 | /* Should only happen if tpacpi_lifecycle is corrupt */ |
| 1410 | BUG(); |
| 1411 | return -EBUSY; |
| 1412 | } |
| 1413 | |
| 1414 | static void hotkey_inputdev_close(struct input_dev *dev) |
| 1415 | { |
| 1416 | /* disable hotkey polling when possible */ |
| 1417 | if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING) |
| 1418 | hotkey_poll_setup_safe(0); |
| 1419 | } |
| 1420 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| 1421 | |
| 1422 | /* sysfs hotkey enable ------------------------------------------------- */ |
| 1423 | static ssize_t hotkey_enable_show(struct device *dev, |
| 1424 | struct device_attribute *attr, |
| 1425 | char *buf) |
| 1426 | { |
| 1427 | int res, status; |
| 1428 | |
| 1429 | res = hotkey_status_get(&status); |
| 1430 | if (res) |
| 1431 | return res; |
| 1432 | |
| 1433 | return snprintf(buf, PAGE_SIZE, "%d\n", status); |
| 1434 | } |
| 1435 | |
| 1436 | static ssize_t hotkey_enable_store(struct device *dev, |
| 1437 | struct device_attribute *attr, |
| 1438 | const char *buf, size_t count) |
| 1439 | { |
| 1440 | unsigned long t; |
| 1441 | int res; |
| 1442 | |
| 1443 | if (parse_strtoul(buf, 1, &t)) |
| 1444 | return -EINVAL; |
| 1445 | |
| 1446 | res = hotkey_status_set(t); |
| 1447 | |
| 1448 | return (res) ? res : count; |
| 1449 | } |
| 1450 | |
| 1451 | static struct device_attribute dev_attr_hotkey_enable = |
| 1452 | __ATTR(hotkey_enable, S_IWUSR | S_IRUGO, |
| 1453 | hotkey_enable_show, hotkey_enable_store); |
| 1454 | |
| 1455 | /* sysfs hotkey mask --------------------------------------------------- */ |
| 1456 | static ssize_t hotkey_mask_show(struct device *dev, |
| 1457 | struct device_attribute *attr, |
| 1458 | char *buf) |
| 1459 | { |
| 1460 | int res; |
| 1461 | |
| 1462 | if (mutex_lock_interruptible(&hotkey_mutex)) |
| 1463 | return -ERESTARTSYS; |
| 1464 | res = hotkey_mask_get(); |
| 1465 | mutex_unlock(&hotkey_mutex); |
| 1466 | |
| 1467 | return (res)? |
| 1468 | res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask); |
| 1469 | } |
| 1470 | |
| 1471 | static ssize_t hotkey_mask_store(struct device *dev, |
| 1472 | struct device_attribute *attr, |
| 1473 | const char *buf, size_t count) |
| 1474 | { |
| 1475 | unsigned long t; |
| 1476 | int res; |
| 1477 | |
| 1478 | if (parse_strtoul(buf, 0xffffffffUL, &t)) |
| 1479 | return -EINVAL; |
| 1480 | |
| 1481 | if (mutex_lock_interruptible(&hotkey_mutex)) |
| 1482 | return -ERESTARTSYS; |
| 1483 | |
| 1484 | res = hotkey_mask_set(t); |
| 1485 | |
| 1486 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1487 | hotkey_poll_setup(1); |
| 1488 | #endif |
| 1489 | |
| 1490 | mutex_unlock(&hotkey_mutex); |
| 1491 | |
| 1492 | return (res) ? res : count; |
| 1493 | } |
| 1494 | |
| 1495 | static struct device_attribute dev_attr_hotkey_mask = |
| 1496 | __ATTR(hotkey_mask, S_IWUSR | S_IRUGO, |
| 1497 | hotkey_mask_show, hotkey_mask_store); |
| 1498 | |
| 1499 | /* sysfs hotkey bios_enabled ------------------------------------------- */ |
| 1500 | static ssize_t hotkey_bios_enabled_show(struct device *dev, |
| 1501 | struct device_attribute *attr, |
| 1502 | char *buf) |
| 1503 | { |
| 1504 | return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status); |
| 1505 | } |
| 1506 | |
| 1507 | static struct device_attribute dev_attr_hotkey_bios_enabled = |
| 1508 | __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL); |
| 1509 | |
| 1510 | /* sysfs hotkey bios_mask ---------------------------------------------- */ |
| 1511 | static ssize_t hotkey_bios_mask_show(struct device *dev, |
| 1512 | struct device_attribute *attr, |
| 1513 | char *buf) |
| 1514 | { |
| 1515 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); |
| 1516 | } |
| 1517 | |
| 1518 | static struct device_attribute dev_attr_hotkey_bios_mask = |
| 1519 | __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL); |
| 1520 | |
| 1521 | /* sysfs hotkey all_mask ----------------------------------------------- */ |
| 1522 | static ssize_t hotkey_all_mask_show(struct device *dev, |
| 1523 | struct device_attribute *attr, |
| 1524 | char *buf) |
| 1525 | { |
| 1526 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", |
| 1527 | hotkey_all_mask | hotkey_source_mask); |
| 1528 | } |
| 1529 | |
| 1530 | static struct device_attribute dev_attr_hotkey_all_mask = |
| 1531 | __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL); |
| 1532 | |
| 1533 | /* sysfs hotkey recommended_mask --------------------------------------- */ |
| 1534 | static ssize_t hotkey_recommended_mask_show(struct device *dev, |
| 1535 | struct device_attribute *attr, |
| 1536 | char *buf) |
| 1537 | { |
| 1538 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", |
| 1539 | (hotkey_all_mask | hotkey_source_mask) |
| 1540 | & ~hotkey_reserved_mask); |
| 1541 | } |
| 1542 | |
| 1543 | static struct device_attribute dev_attr_hotkey_recommended_mask = |
| 1544 | __ATTR(hotkey_recommended_mask, S_IRUGO, |
| 1545 | hotkey_recommended_mask_show, NULL); |
| 1546 | |
| 1547 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1548 | |
| 1549 | /* sysfs hotkey hotkey_source_mask ------------------------------------- */ |
| 1550 | static ssize_t hotkey_source_mask_show(struct device *dev, |
| 1551 | struct device_attribute *attr, |
| 1552 | char *buf) |
| 1553 | { |
| 1554 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); |
| 1555 | } |
| 1556 | |
| 1557 | static ssize_t hotkey_source_mask_store(struct device *dev, |
| 1558 | struct device_attribute *attr, |
| 1559 | const char *buf, size_t count) |
| 1560 | { |
| 1561 | unsigned long t; |
| 1562 | |
| 1563 | if (parse_strtoul(buf, 0xffffffffUL, &t) || |
| 1564 | ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) |
| 1565 | return -EINVAL; |
| 1566 | |
| 1567 | if (mutex_lock_interruptible(&hotkey_mutex)) |
| 1568 | return -ERESTARTSYS; |
| 1569 | |
| 1570 | HOTKEY_CONFIG_CRITICAL_START |
| 1571 | hotkey_source_mask = t; |
| 1572 | HOTKEY_CONFIG_CRITICAL_END |
| 1573 | |
| 1574 | hotkey_poll_setup(1); |
| 1575 | |
| 1576 | mutex_unlock(&hotkey_mutex); |
| 1577 | |
| 1578 | return count; |
| 1579 | } |
| 1580 | |
| 1581 | static struct device_attribute dev_attr_hotkey_source_mask = |
| 1582 | __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO, |
| 1583 | hotkey_source_mask_show, hotkey_source_mask_store); |
| 1584 | |
| 1585 | /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ |
| 1586 | static ssize_t hotkey_poll_freq_show(struct device *dev, |
| 1587 | struct device_attribute *attr, |
| 1588 | char *buf) |
| 1589 | { |
| 1590 | return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); |
| 1591 | } |
| 1592 | |
| 1593 | static ssize_t hotkey_poll_freq_store(struct device *dev, |
| 1594 | struct device_attribute *attr, |
| 1595 | const char *buf, size_t count) |
| 1596 | { |
| 1597 | unsigned long t; |
| 1598 | |
| 1599 | if (parse_strtoul(buf, 25, &t)) |
| 1600 | return -EINVAL; |
| 1601 | |
| 1602 | if (mutex_lock_interruptible(&hotkey_mutex)) |
| 1603 | return -ERESTARTSYS; |
| 1604 | |
| 1605 | hotkey_poll_freq = t; |
| 1606 | |
| 1607 | hotkey_poll_setup(1); |
| 1608 | mutex_unlock(&hotkey_mutex); |
| 1609 | |
| 1610 | return count; |
| 1611 | } |
| 1612 | |
| 1613 | static struct device_attribute dev_attr_hotkey_poll_freq = |
| 1614 | __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO, |
| 1615 | hotkey_poll_freq_show, hotkey_poll_freq_store); |
| 1616 | |
| 1617 | #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ |
| 1618 | |
| 1619 | /* sysfs hotkey radio_sw ----------------------------------------------- */ |
| 1620 | static ssize_t hotkey_radio_sw_show(struct device *dev, |
| 1621 | struct device_attribute *attr, |
| 1622 | char *buf) |
| 1623 | { |
| 1624 | int res, s; |
| 1625 | res = hotkey_get_wlsw(&s); |
| 1626 | if (res < 0) |
| 1627 | return res; |
| 1628 | |
| 1629 | return snprintf(buf, PAGE_SIZE, "%d\n", !!s); |
| 1630 | } |
| 1631 | |
| 1632 | static struct device_attribute dev_attr_hotkey_radio_sw = |
| 1633 | __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL); |
| 1634 | |
| 1635 | /* sysfs hotkey report_mode -------------------------------------------- */ |
| 1636 | static ssize_t hotkey_report_mode_show(struct device *dev, |
| 1637 | struct device_attribute *attr, |
| 1638 | char *buf) |
| 1639 | { |
| 1640 | return snprintf(buf, PAGE_SIZE, "%d\n", |
| 1641 | (hotkey_report_mode != 0) ? hotkey_report_mode : 1); |
| 1642 | } |
| 1643 | |
| 1644 | static struct device_attribute dev_attr_hotkey_report_mode = |
| 1645 | __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL); |
| 1646 | |
| 1647 | /* --------------------------------------------------------------------- */ |
| 1648 | |
| 1649 | static struct attribute *hotkey_attributes[] __initdata = { |
| 1650 | &dev_attr_hotkey_enable.attr, |
| 1651 | &dev_attr_hotkey_bios_enabled.attr, |
| 1652 | &dev_attr_hotkey_report_mode.attr, |
| 1653 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1654 | &dev_attr_hotkey_mask.attr, |
| 1655 | &dev_attr_hotkey_all_mask.attr, |
| 1656 | &dev_attr_hotkey_recommended_mask.attr, |
| 1657 | &dev_attr_hotkey_source_mask.attr, |
| 1658 | &dev_attr_hotkey_poll_freq.attr, |
| 1659 | #endif |
| 1660 | }; |
| 1661 | |
| 1662 | static struct attribute *hotkey_mask_attributes[] __initdata = { |
| 1663 | &dev_attr_hotkey_bios_mask.attr, |
| 1664 | #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1665 | &dev_attr_hotkey_mask.attr, |
| 1666 | &dev_attr_hotkey_all_mask.attr, |
| 1667 | &dev_attr_hotkey_recommended_mask.attr, |
| 1668 | #endif |
| 1669 | }; |
| 1670 | |
| 1671 | static int __init hotkey_init(struct ibm_init_struct *iibm) |
| 1672 | { |
| 1673 | /* Requirements for changing the default keymaps: |
| 1674 | * |
| 1675 | * 1. Many of the keys are mapped to KEY_RESERVED for very |
| 1676 | * good reasons. Do not change them unless you have deep |
| 1677 | * knowledge on the IBM and Lenovo ThinkPad firmware for |
| 1678 | * the various ThinkPad models. The driver behaves |
| 1679 | * differently for KEY_RESERVED: such keys have their |
| 1680 | * hot key mask *unset* in mask_recommended, and also |
| 1681 | * in the initial hot key mask programmed into the |
| 1682 | * firmware at driver load time, which means the firm- |
| 1683 | * ware may react very differently if you change them to |
| 1684 | * something else; |
| 1685 | * |
| 1686 | * 2. You must be subscribed to the linux-thinkpad and |
| 1687 | * ibm-acpi-devel mailing lists, and you should read the |
| 1688 | * list archives since 2007 if you want to change the |
| 1689 | * keymaps. This requirement exists so that you will |
| 1690 | * know the past history of problems with the thinkpad- |
| 1691 | * acpi driver keymaps, and also that you will be |
| 1692 | * listening to any bug reports; |
| 1693 | * |
| 1694 | * 3. Do not send thinkpad-acpi specific patches directly to |
| 1695 | * for merging, *ever*. Send them to the linux-acpi |
| 1696 | * mailinglist for comments. Merging is to be done only |
| 1697 | * through acpi-test and the ACPI maintainer. |
| 1698 | * |
| 1699 | * If the above is too much to ask, don't change the keymap. |
| 1700 | * Ask the thinkpad-acpi maintainer to do it, instead. |
| 1701 | */ |
| 1702 | static u16 ibm_keycode_map[] __initdata = { |
| 1703 | /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ |
| 1704 | KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP, |
| 1705 | KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, |
| 1706 | KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, |
| 1707 | |
| 1708 | /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ |
| 1709 | KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
| 1710 | KEY_UNKNOWN, /* 0x0D: FN+INSERT */ |
| 1711 | KEY_UNKNOWN, /* 0x0E: FN+DELETE */ |
| 1712 | |
| 1713 | /* brightness: firmware always reacts to them, unless |
| 1714 | * X.org did some tricks in the radeon BIOS scratch |
| 1715 | * registers of *some* models */ |
| 1716 | KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ |
| 1717 | KEY_RESERVED, /* 0x10: FN+END (brightness down) */ |
| 1718 | |
| 1719 | /* Thinklight: firmware always react to it */ |
| 1720 | KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
| 1721 | |
| 1722 | KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
| 1723 | KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ |
| 1724 | |
| 1725 | /* Volume: firmware always react to it and reprograms |
| 1726 | * the built-in *extra* mixer. Never map it to control |
| 1727 | * another mixer by default. */ |
| 1728 | KEY_RESERVED, /* 0x14: VOLUME UP */ |
| 1729 | KEY_RESERVED, /* 0x15: VOLUME DOWN */ |
| 1730 | KEY_RESERVED, /* 0x16: MUTE */ |
| 1731 | |
| 1732 | KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
| 1733 | |
| 1734 | /* (assignments unknown, please report if found) */ |
| 1735 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| 1736 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| 1737 | }; |
| 1738 | static u16 lenovo_keycode_map[] __initdata = { |
| 1739 | /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ |
| 1740 | KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, |
| 1741 | KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, |
| 1742 | KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, |
| 1743 | |
| 1744 | /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ |
| 1745 | KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ |
| 1746 | KEY_UNKNOWN, /* 0x0D: FN+INSERT */ |
| 1747 | KEY_UNKNOWN, /* 0x0E: FN+DELETE */ |
| 1748 | |
| 1749 | KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ |
| 1750 | KEY_RESERVED, /* 0x10: FN+END (brightness down) */ |
| 1751 | |
| 1752 | KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ |
| 1753 | |
| 1754 | KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ |
| 1755 | KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ |
| 1756 | |
| 1757 | /* Volume: z60/z61, T60 (BIOS version?): firmware always |
| 1758 | * react to it and reprograms the built-in *extra* mixer. |
| 1759 | * Never map it to control another mixer by default. |
| 1760 | * |
| 1761 | * T60?, T61, R60?, R61: firmware and EC tries to send |
| 1762 | * these over the regular keyboard, so these are no-ops, |
| 1763 | * but there are still weird bugs re. MUTE, so do not |
| 1764 | * change unless you get test reports from all Lenovo |
| 1765 | * models. May cause the BIOS to interfere with the |
| 1766 | * HDA mixer. |
| 1767 | */ |
| 1768 | KEY_RESERVED, /* 0x14: VOLUME UP */ |
| 1769 | KEY_RESERVED, /* 0x15: VOLUME DOWN */ |
| 1770 | KEY_RESERVED, /* 0x16: MUTE */ |
| 1771 | |
| 1772 | KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ |
| 1773 | |
| 1774 | /* (assignments unknown, please report if found) */ |
| 1775 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| 1776 | KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, |
| 1777 | }; |
| 1778 | |
| 1779 | #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map) |
| 1780 | #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map) |
| 1781 | #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0]) |
| 1782 | |
| 1783 | int res, i; |
| 1784 | int status; |
| 1785 | int hkeyv; |
| 1786 | |
| 1787 | vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n"); |
| 1788 | |
| 1789 | BUG_ON(!tpacpi_inputdev); |
| 1790 | BUG_ON(tpacpi_inputdev->open != NULL || |
| 1791 | tpacpi_inputdev->close != NULL); |
| 1792 | |
| 1793 | TPACPI_ACPIHANDLE_INIT(hkey); |
| 1794 | mutex_init(&hotkey_mutex); |
| 1795 | |
| 1796 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1797 | mutex_init(&hotkey_thread_mutex); |
| 1798 | mutex_init(&hotkey_thread_data_mutex); |
| 1799 | #endif |
| 1800 | |
| 1801 | /* hotkey not supported on 570 */ |
| 1802 | tp_features.hotkey = hkey_handle != NULL; |
| 1803 | |
| 1804 | vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n", |
| 1805 | str_supported(tp_features.hotkey)); |
| 1806 | |
| 1807 | if (tp_features.hotkey) { |
| 1808 | hotkey_dev_attributes = create_attr_set(10, NULL); |
| 1809 | if (!hotkey_dev_attributes) |
| 1810 | return -ENOMEM; |
| 1811 | res = add_many_to_attr_set(hotkey_dev_attributes, |
| 1812 | hotkey_attributes, |
| 1813 | ARRAY_SIZE(hotkey_attributes)); |
| 1814 | if (res) |
| 1815 | return res; |
| 1816 | |
| 1817 | /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| 1818 | A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking |
| 1819 | for HKEY interface version 0x100 */ |
| 1820 | if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { |
| 1821 | if ((hkeyv >> 8) != 1) { |
| 1822 | printk(TPACPI_ERR "unknown version of the " |
| 1823 | "HKEY interface: 0x%x\n", hkeyv); |
| 1824 | printk(TPACPI_ERR "please report this to %s\n", |
| 1825 | TPACPI_MAIL); |
| 1826 | } else { |
| 1827 | /* |
| 1828 | * MHKV 0x100 in A31, R40, R40e, |
| 1829 | * T4x, X31, and later |
| 1830 | */ |
| 1831 | tp_features.hotkey_mask = 1; |
| 1832 | } |
| 1833 | } |
| 1834 | |
| 1835 | vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", |
| 1836 | str_supported(tp_features.hotkey_mask)); |
| 1837 | |
| 1838 | if (tp_features.hotkey_mask) { |
| 1839 | if (!acpi_evalf(hkey_handle, &hotkey_all_mask, |
| 1840 | "MHKA", "qd")) { |
| 1841 | printk(TPACPI_ERR |
| 1842 | "missing MHKA handler, " |
| 1843 | "please report this to %s\n", |
| 1844 | TPACPI_MAIL); |
| 1845 | /* FN+F12, FN+F4, FN+F3 */ |
| 1846 | hotkey_all_mask = 0x080cU; |
| 1847 | } |
| 1848 | } |
| 1849 | |
| 1850 | /* hotkey_source_mask *must* be zero for |
| 1851 | * the first hotkey_mask_get */ |
| 1852 | res = hotkey_status_get(&hotkey_orig_status); |
| 1853 | if (!res && tp_features.hotkey_mask) { |
| 1854 | res = hotkey_mask_get(); |
| 1855 | hotkey_orig_mask = hotkey_mask; |
| 1856 | if (!res) { |
| 1857 | res = add_many_to_attr_set( |
| 1858 | hotkey_dev_attributes, |
| 1859 | hotkey_mask_attributes, |
| 1860 | ARRAY_SIZE(hotkey_mask_attributes)); |
| 1861 | } |
| 1862 | } |
| 1863 | |
| 1864 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1865 | if (tp_features.hotkey_mask) { |
| 1866 | hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK |
| 1867 | & ~hotkey_all_mask; |
| 1868 | } else { |
| 1869 | hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK; |
| 1870 | } |
| 1871 | |
| 1872 | vdbg_printk(TPACPI_DBG_INIT, |
| 1873 | "hotkey source mask 0x%08x, polling freq %d\n", |
| 1874 | hotkey_source_mask, hotkey_poll_freq); |
| 1875 | #endif |
| 1876 | |
| 1877 | /* Not all thinkpads have a hardware radio switch */ |
| 1878 | if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { |
| 1879 | tp_features.hotkey_wlsw = 1; |
| 1880 | printk(TPACPI_INFO |
| 1881 | "radio switch found; radios are %s\n", |
| 1882 | enabled(status, 0)); |
| 1883 | res = add_to_attr_set(hotkey_dev_attributes, |
| 1884 | &dev_attr_hotkey_radio_sw.attr); |
| 1885 | } |
| 1886 | |
| 1887 | if (!res) |
| 1888 | res = register_attr_set_with_sysfs( |
| 1889 | hotkey_dev_attributes, |
| 1890 | &tpacpi_pdev->dev.kobj); |
| 1891 | if (res) |
| 1892 | return res; |
| 1893 | |
| 1894 | /* Set up key map */ |
| 1895 | |
| 1896 | hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, |
| 1897 | GFP_KERNEL); |
| 1898 | if (!hotkey_keycode_map) { |
| 1899 | printk(TPACPI_ERR |
| 1900 | "failed to allocate memory for key map\n"); |
| 1901 | return -ENOMEM; |
| 1902 | } |
| 1903 | |
| 1904 | if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { |
| 1905 | dbg_printk(TPACPI_DBG_INIT, |
| 1906 | "using Lenovo default hot key map\n"); |
| 1907 | memcpy(hotkey_keycode_map, &lenovo_keycode_map, |
| 1908 | TPACPI_HOTKEY_MAP_SIZE); |
| 1909 | } else { |
| 1910 | dbg_printk(TPACPI_DBG_INIT, |
| 1911 | "using IBM default hot key map\n"); |
| 1912 | memcpy(hotkey_keycode_map, &ibm_keycode_map, |
| 1913 | TPACPI_HOTKEY_MAP_SIZE); |
| 1914 | } |
| 1915 | |
| 1916 | set_bit(EV_KEY, tpacpi_inputdev->evbit); |
| 1917 | set_bit(EV_MSC, tpacpi_inputdev->evbit); |
| 1918 | set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); |
| 1919 | tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; |
| 1920 | tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; |
| 1921 | tpacpi_inputdev->keycode = hotkey_keycode_map; |
| 1922 | for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { |
| 1923 | if (hotkey_keycode_map[i] != KEY_RESERVED) { |
| 1924 | set_bit(hotkey_keycode_map[i], |
| 1925 | tpacpi_inputdev->keybit); |
| 1926 | } else { |
| 1927 | if (i < sizeof(hotkey_reserved_mask)*8) |
| 1928 | hotkey_reserved_mask |= 1 << i; |
| 1929 | } |
| 1930 | } |
| 1931 | |
| 1932 | if (tp_features.hotkey_wlsw) { |
| 1933 | set_bit(EV_SW, tpacpi_inputdev->evbit); |
| 1934 | set_bit(SW_RADIO, tpacpi_inputdev->swbit); |
| 1935 | } |
| 1936 | |
| 1937 | dbg_printk(TPACPI_DBG_INIT, |
| 1938 | "enabling hot key handling\n"); |
| 1939 | res = hotkey_status_set(1); |
| 1940 | if (res) |
| 1941 | return res; |
| 1942 | res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask) |
| 1943 | & ~hotkey_reserved_mask) |
| 1944 | | hotkey_orig_mask); |
| 1945 | if (res < 0 && res != -ENXIO) |
| 1946 | return res; |
| 1947 | |
| 1948 | dbg_printk(TPACPI_DBG_INIT, |
| 1949 | "legacy hot key reporting over procfs %s\n", |
| 1950 | (hotkey_report_mode < 2) ? |
| 1951 | "enabled" : "disabled"); |
| 1952 | |
| 1953 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1954 | tpacpi_inputdev->open = &hotkey_inputdev_open; |
| 1955 | tpacpi_inputdev->close = &hotkey_inputdev_close; |
| 1956 | |
| 1957 | hotkey_poll_setup_safe(1); |
| 1958 | #endif |
| 1959 | } |
| 1960 | |
| 1961 | return (tp_features.hotkey)? 0 : 1; |
| 1962 | } |
| 1963 | |
| 1964 | static void hotkey_exit(void) |
| 1965 | { |
| 1966 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 1967 | hotkey_poll_stop_sync(); |
| 1968 | #endif |
| 1969 | |
| 1970 | if (tp_features.hotkey) { |
| 1971 | dbg_printk(TPACPI_DBG_EXIT, |
| 1972 | "restoring original hot key mask\n"); |
| 1973 | /* no short-circuit boolean operator below! */ |
| 1974 | if ((hotkey_mask_set(hotkey_orig_mask) | |
| 1975 | hotkey_status_set(hotkey_orig_status)) != 0) |
| 1976 | printk(TPACPI_ERR |
| 1977 | "failed to restore hot key mask " |
| 1978 | "to BIOS defaults\n"); |
| 1979 | } |
| 1980 | |
| 1981 | if (hotkey_dev_attributes) { |
| 1982 | delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); |
| 1983 | hotkey_dev_attributes = NULL; |
| 1984 | } |
| 1985 | } |
| 1986 | |
| 1987 | static void hotkey_notify(struct ibm_struct *ibm, u32 event) |
| 1988 | { |
| 1989 | u32 hkey; |
| 1990 | unsigned int scancode; |
| 1991 | int send_acpi_ev; |
| 1992 | int ignore_acpi_ev; |
| 1993 | |
| 1994 | if (event != 0x80) { |
| 1995 | printk(TPACPI_ERR |
| 1996 | "unknown HKEY notification event %d\n", event); |
| 1997 | /* forward it to userspace, maybe it knows how to handle it */ |
| 1998 | acpi_bus_generate_netlink_event( |
| 1999 | ibm->acpi->device->pnp.device_class, |
| 2000 | ibm->acpi->device->dev.bus_id, |
| 2001 | event, 0); |
| 2002 | return; |
| 2003 | } |
| 2004 | |
| 2005 | while (1) { |
| 2006 | if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { |
| 2007 | printk(TPACPI_ERR "failed to retrieve HKEY event\n"); |
| 2008 | return; |
| 2009 | } |
| 2010 | |
| 2011 | if (hkey == 0) { |
| 2012 | /* queue empty */ |
| 2013 | return; |
| 2014 | } |
| 2015 | |
| 2016 | send_acpi_ev = 0; |
| 2017 | ignore_acpi_ev = 0; |
| 2018 | |
| 2019 | switch (hkey >> 12) { |
| 2020 | case 1: |
| 2021 | /* 0x1000-0x1FFF: key presses */ |
| 2022 | scancode = hkey & 0xfff; |
| 2023 | if (scancode > 0 && scancode < 0x21) { |
| 2024 | scancode--; |
| 2025 | if (!(hotkey_source_mask & (1 << scancode))) { |
| 2026 | tpacpi_input_send_key(scancode); |
| 2027 | } else { |
| 2028 | ignore_acpi_ev = 1; |
| 2029 | } |
| 2030 | } else { |
| 2031 | printk(TPACPI_ERR |
| 2032 | "hotkey 0x%04x out of range " |
| 2033 | "for keyboard map\n", hkey); |
| 2034 | send_acpi_ev = 1; |
| 2035 | } |
| 2036 | break; |
| 2037 | case 5: |
| 2038 | /* 0x5000-0x5FFF: LID */ |
| 2039 | /* we don't handle it through this path, just |
| 2040 | * eat up known LID events */ |
| 2041 | if (hkey != 0x5001 && hkey != 0x5002) { |
| 2042 | printk(TPACPI_ERR |
| 2043 | "unknown LID-related HKEY event: " |
| 2044 | "0x%04x\n", hkey); |
| 2045 | send_acpi_ev = 1; |
| 2046 | } else { |
| 2047 | ignore_acpi_ev = 1; |
| 2048 | } |
| 2049 | break; |
| 2050 | case 7: |
| 2051 | /* 0x7000-0x7FFF: misc */ |
| 2052 | if (tp_features.hotkey_wlsw && hkey == 0x7000) { |
| 2053 | tpacpi_input_send_radiosw(); |
| 2054 | break; |
| 2055 | } |
| 2056 | /* fallthrough to default */ |
| 2057 | default: |
| 2058 | /* case 2: dock-related */ |
| 2059 | /* 0x2305 - T43 waking up due to bay lever |
| 2060 | * eject while aslept */ |
| 2061 | /* case 3: ultra-bay related. maybe bay in dock? */ |
| 2062 | /* 0x3003 - T43 after wake up by bay lever |
| 2063 | * eject (0x2305) */ |
| 2064 | printk(TPACPI_NOTICE |
| 2065 | "unhandled HKEY event 0x%04x\n", hkey); |
| 2066 | send_acpi_ev = 1; |
| 2067 | } |
| 2068 | |
| 2069 | /* Legacy events */ |
| 2070 | if (!ignore_acpi_ev && |
| 2071 | (send_acpi_ev || hotkey_report_mode < 2)) { |
| 2072 | acpi_bus_generate_proc_event(ibm->acpi->device, |
| 2073 | event, hkey); |
| 2074 | } |
| 2075 | |
| 2076 | /* netlink events */ |
| 2077 | if (!ignore_acpi_ev && send_acpi_ev) { |
| 2078 | acpi_bus_generate_netlink_event( |
| 2079 | ibm->acpi->device->pnp.device_class, |
| 2080 | ibm->acpi->device->dev.bus_id, |
| 2081 | event, hkey); |
| 2082 | } |
| 2083 | } |
| 2084 | } |
| 2085 | |
| 2086 | static void hotkey_resume(void) |
| 2087 | { |
| 2088 | if (hotkey_mask_get()) |
| 2089 | printk(TPACPI_ERR |
| 2090 | "error while trying to read hot key mask " |
| 2091 | "from firmware\n"); |
| 2092 | tpacpi_input_send_radiosw(); |
| 2093 | #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL |
| 2094 | hotkey_poll_setup_safe(0); |
| 2095 | #endif |
| 2096 | } |
| 2097 | |
| 2098 | /* procfs -------------------------------------------------------------- */ |
| 2099 | static int hotkey_read(char *p) |
| 2100 | { |
| 2101 | int res, status; |
| 2102 | int len = 0; |
| 2103 | |
| 2104 | if (!tp_features.hotkey) { |
| 2105 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 2106 | return len; |
| 2107 | } |
| 2108 | |
| 2109 | if (mutex_lock_interruptible(&hotkey_mutex)) |
| 2110 | return -ERESTARTSYS; |
| 2111 | res = hotkey_status_get(&status); |
| 2112 | if (!res) |
| 2113 | res = hotkey_mask_get(); |
| 2114 | mutex_unlock(&hotkey_mutex); |
| 2115 | if (res) |
| 2116 | return res; |
| 2117 | |
| 2118 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); |
| 2119 | if (tp_features.hotkey_mask) { |
| 2120 | len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask); |
| 2121 | len += sprintf(p + len, |
| 2122 | "commands:\tenable, disable, reset, <mask>\n"); |
| 2123 | } else { |
| 2124 | len += sprintf(p + len, "mask:\t\tnot supported\n"); |
| 2125 | len += sprintf(p + len, "commands:\tenable, disable, reset\n"); |
| 2126 | } |
| 2127 | |
| 2128 | return len; |
| 2129 | } |
| 2130 | |
| 2131 | static int hotkey_write(char *buf) |
| 2132 | { |
| 2133 | int res, status; |
| 2134 | u32 mask; |
| 2135 | char *cmd; |
| 2136 | |
| 2137 | if (!tp_features.hotkey) |
| 2138 | return -ENODEV; |
| 2139 | |
| 2140 | if (mutex_lock_interruptible(&hotkey_mutex)) |
| 2141 | return -ERESTARTSYS; |
| 2142 | |
| 2143 | status = -1; |
| 2144 | mask = hotkey_mask; |
| 2145 | |
| 2146 | res = 0; |
| 2147 | while ((cmd = next_cmd(&buf))) { |
| 2148 | if (strlencmp(cmd, "enable") == 0) { |
| 2149 | status = 1; |
| 2150 | } else if (strlencmp(cmd, "disable") == 0) { |
| 2151 | status = 0; |
| 2152 | } else if (strlencmp(cmd, "reset") == 0) { |
| 2153 | status = hotkey_orig_status; |
| 2154 | mask = hotkey_orig_mask; |
| 2155 | } else if (sscanf(cmd, "0x%x", &mask) == 1) { |
| 2156 | /* mask set */ |
| 2157 | } else if (sscanf(cmd, "%x", &mask) == 1) { |
| 2158 | /* mask set */ |
| 2159 | } else { |
| 2160 | res = -EINVAL; |
| 2161 | goto errexit; |
| 2162 | } |
| 2163 | } |
| 2164 | if (status != -1) |
| 2165 | res = hotkey_status_set(status); |
| 2166 | |
| 2167 | if (!res && mask != hotkey_mask) |
| 2168 | res = hotkey_mask_set(mask); |
| 2169 | |
| 2170 | errexit: |
| 2171 | mutex_unlock(&hotkey_mutex); |
| 2172 | return res; |
| 2173 | } |
| 2174 | |
| 2175 | static const struct acpi_device_id ibm_htk_device_ids[] = { |
| 2176 | {TPACPI_ACPI_HKEY_HID, 0}, |
| 2177 | {"", 0}, |
| 2178 | }; |
| 2179 | |
| 2180 | static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { |
| 2181 | .hid = ibm_htk_device_ids, |
| 2182 | .notify = hotkey_notify, |
| 2183 | .handle = &hkey_handle, |
| 2184 | .type = ACPI_DEVICE_NOTIFY, |
| 2185 | }; |
| 2186 | |
| 2187 | static struct ibm_struct hotkey_driver_data = { |
| 2188 | .name = "hotkey", |
| 2189 | .read = hotkey_read, |
| 2190 | .write = hotkey_write, |
| 2191 | .exit = hotkey_exit, |
| 2192 | .resume = hotkey_resume, |
| 2193 | .acpi = &ibm_hotkey_acpidriver, |
| 2194 | }; |
| 2195 | |
| 2196 | /************************************************************************* |
| 2197 | * Bluetooth subdriver |
| 2198 | */ |
| 2199 | |
| 2200 | enum { |
| 2201 | /* ACPI GBDC/SBDC bits */ |
| 2202 | TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ |
| 2203 | TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ |
| 2204 | TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */ |
| 2205 | }; |
| 2206 | |
| 2207 | static int bluetooth_get_radiosw(void); |
| 2208 | static int bluetooth_set_radiosw(int radio_on); |
| 2209 | |
| 2210 | /* sysfs bluetooth enable ---------------------------------------------- */ |
| 2211 | static ssize_t bluetooth_enable_show(struct device *dev, |
| 2212 | struct device_attribute *attr, |
| 2213 | char *buf) |
| 2214 | { |
| 2215 | int status; |
| 2216 | |
| 2217 | status = bluetooth_get_radiosw(); |
| 2218 | if (status < 0) |
| 2219 | return status; |
| 2220 | |
| 2221 | return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0); |
| 2222 | } |
| 2223 | |
| 2224 | static ssize_t bluetooth_enable_store(struct device *dev, |
| 2225 | struct device_attribute *attr, |
| 2226 | const char *buf, size_t count) |
| 2227 | { |
| 2228 | unsigned long t; |
| 2229 | int res; |
| 2230 | |
| 2231 | if (parse_strtoul(buf, 1, &t)) |
| 2232 | return -EINVAL; |
| 2233 | |
| 2234 | res = bluetooth_set_radiosw(t); |
| 2235 | |
| 2236 | return (res) ? res : count; |
| 2237 | } |
| 2238 | |
| 2239 | static struct device_attribute dev_attr_bluetooth_enable = |
| 2240 | __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO, |
| 2241 | bluetooth_enable_show, bluetooth_enable_store); |
| 2242 | |
| 2243 | /* --------------------------------------------------------------------- */ |
| 2244 | |
| 2245 | static struct attribute *bluetooth_attributes[] = { |
| 2246 | &dev_attr_bluetooth_enable.attr, |
| 2247 | NULL |
| 2248 | }; |
| 2249 | |
| 2250 | static const struct attribute_group bluetooth_attr_group = { |
| 2251 | .attrs = bluetooth_attributes, |
| 2252 | }; |
| 2253 | |
| 2254 | static int __init bluetooth_init(struct ibm_init_struct *iibm) |
| 2255 | { |
| 2256 | int res; |
| 2257 | int status = 0; |
| 2258 | |
| 2259 | vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n"); |
| 2260 | |
| 2261 | TPACPI_ACPIHANDLE_INIT(hkey); |
| 2262 | |
| 2263 | /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| 2264 | G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ |
| 2265 | tp_features.bluetooth = hkey_handle && |
| 2266 | acpi_evalf(hkey_handle, &status, "GBDC", "qd"); |
| 2267 | |
| 2268 | vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n", |
| 2269 | str_supported(tp_features.bluetooth), |
| 2270 | status); |
| 2271 | |
| 2272 | if (tp_features.bluetooth) { |
| 2273 | if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { |
| 2274 | /* no bluetooth hardware present in system */ |
| 2275 | tp_features.bluetooth = 0; |
| 2276 | dbg_printk(TPACPI_DBG_INIT, |
| 2277 | "bluetooth hardware not installed\n"); |
| 2278 | } else { |
| 2279 | res = sysfs_create_group(&tpacpi_pdev->dev.kobj, |
| 2280 | &bluetooth_attr_group); |
| 2281 | if (res) |
| 2282 | return res; |
| 2283 | } |
| 2284 | } |
| 2285 | |
| 2286 | return (tp_features.bluetooth)? 0 : 1; |
| 2287 | } |
| 2288 | |
| 2289 | static void bluetooth_exit(void) |
| 2290 | { |
| 2291 | sysfs_remove_group(&tpacpi_pdev->dev.kobj, |
| 2292 | &bluetooth_attr_group); |
| 2293 | } |
| 2294 | |
| 2295 | static int bluetooth_get_radiosw(void) |
| 2296 | { |
| 2297 | int status; |
| 2298 | |
| 2299 | if (!tp_features.bluetooth) |
| 2300 | return -ENODEV; |
| 2301 | |
| 2302 | if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) |
| 2303 | return -EIO; |
| 2304 | |
| 2305 | return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0); |
| 2306 | } |
| 2307 | |
| 2308 | static int bluetooth_set_radiosw(int radio_on) |
| 2309 | { |
| 2310 | int status; |
| 2311 | |
| 2312 | if (!tp_features.bluetooth) |
| 2313 | return -ENODEV; |
| 2314 | |
| 2315 | if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) |
| 2316 | return -EIO; |
| 2317 | if (radio_on) |
| 2318 | status |= TP_ACPI_BLUETOOTH_RADIOSSW; |
| 2319 | else |
| 2320 | status &= ~TP_ACPI_BLUETOOTH_RADIOSSW; |
| 2321 | if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) |
| 2322 | return -EIO; |
| 2323 | |
| 2324 | return 0; |
| 2325 | } |
| 2326 | |
| 2327 | /* procfs -------------------------------------------------------------- */ |
| 2328 | static int bluetooth_read(char *p) |
| 2329 | { |
| 2330 | int len = 0; |
| 2331 | int status = bluetooth_get_radiosw(); |
| 2332 | |
| 2333 | if (!tp_features.bluetooth) |
| 2334 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 2335 | else { |
| 2336 | len += sprintf(p + len, "status:\t\t%s\n", |
| 2337 | (status)? "enabled" : "disabled"); |
| 2338 | len += sprintf(p + len, "commands:\tenable, disable\n"); |
| 2339 | } |
| 2340 | |
| 2341 | return len; |
| 2342 | } |
| 2343 | |
| 2344 | static int bluetooth_write(char *buf) |
| 2345 | { |
| 2346 | char *cmd; |
| 2347 | |
| 2348 | if (!tp_features.bluetooth) |
| 2349 | return -ENODEV; |
| 2350 | |
| 2351 | while ((cmd = next_cmd(&buf))) { |
| 2352 | if (strlencmp(cmd, "enable") == 0) { |
| 2353 | bluetooth_set_radiosw(1); |
| 2354 | } else if (strlencmp(cmd, "disable") == 0) { |
| 2355 | bluetooth_set_radiosw(0); |
| 2356 | } else |
| 2357 | return -EINVAL; |
| 2358 | } |
| 2359 | |
| 2360 | return 0; |
| 2361 | } |
| 2362 | |
| 2363 | static struct ibm_struct bluetooth_driver_data = { |
| 2364 | .name = "bluetooth", |
| 2365 | .read = bluetooth_read, |
| 2366 | .write = bluetooth_write, |
| 2367 | .exit = bluetooth_exit, |
| 2368 | }; |
| 2369 | |
| 2370 | /************************************************************************* |
| 2371 | * Wan subdriver |
| 2372 | */ |
| 2373 | |
| 2374 | enum { |
| 2375 | /* ACPI GWAN/SWAN bits */ |
| 2376 | TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ |
| 2377 | TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ |
| 2378 | TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */ |
| 2379 | }; |
| 2380 | |
| 2381 | static int wan_get_radiosw(void); |
| 2382 | static int wan_set_radiosw(int radio_on); |
| 2383 | |
| 2384 | /* sysfs wan enable ---------------------------------------------------- */ |
| 2385 | static ssize_t wan_enable_show(struct device *dev, |
| 2386 | struct device_attribute *attr, |
| 2387 | char *buf) |
| 2388 | { |
| 2389 | int status; |
| 2390 | |
| 2391 | status = wan_get_radiosw(); |
| 2392 | if (status < 0) |
| 2393 | return status; |
| 2394 | |
| 2395 | return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0); |
| 2396 | } |
| 2397 | |
| 2398 | static ssize_t wan_enable_store(struct device *dev, |
| 2399 | struct device_attribute *attr, |
| 2400 | const char *buf, size_t count) |
| 2401 | { |
| 2402 | unsigned long t; |
| 2403 | int res; |
| 2404 | |
| 2405 | if (parse_strtoul(buf, 1, &t)) |
| 2406 | return -EINVAL; |
| 2407 | |
| 2408 | res = wan_set_radiosw(t); |
| 2409 | |
| 2410 | return (res) ? res : count; |
| 2411 | } |
| 2412 | |
| 2413 | static struct device_attribute dev_attr_wan_enable = |
| 2414 | __ATTR(wwan_enable, S_IWUSR | S_IRUGO, |
| 2415 | wan_enable_show, wan_enable_store); |
| 2416 | |
| 2417 | /* --------------------------------------------------------------------- */ |
| 2418 | |
| 2419 | static struct attribute *wan_attributes[] = { |
| 2420 | &dev_attr_wan_enable.attr, |
| 2421 | NULL |
| 2422 | }; |
| 2423 | |
| 2424 | static const struct attribute_group wan_attr_group = { |
| 2425 | .attrs = wan_attributes, |
| 2426 | }; |
| 2427 | |
| 2428 | static int __init wan_init(struct ibm_init_struct *iibm) |
| 2429 | { |
| 2430 | int res; |
| 2431 | int status = 0; |
| 2432 | |
| 2433 | vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n"); |
| 2434 | |
| 2435 | TPACPI_ACPIHANDLE_INIT(hkey); |
| 2436 | |
| 2437 | tp_features.wan = hkey_handle && |
| 2438 | acpi_evalf(hkey_handle, &status, "GWAN", "qd"); |
| 2439 | |
| 2440 | vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n", |
| 2441 | str_supported(tp_features.wan), |
| 2442 | status); |
| 2443 | |
| 2444 | if (tp_features.wan) { |
| 2445 | if (!(status & TP_ACPI_WANCARD_HWPRESENT)) { |
| 2446 | /* no wan hardware present in system */ |
| 2447 | tp_features.wan = 0; |
| 2448 | dbg_printk(TPACPI_DBG_INIT, |
| 2449 | "wan hardware not installed\n"); |
| 2450 | } else { |
| 2451 | res = sysfs_create_group(&tpacpi_pdev->dev.kobj, |
| 2452 | &wan_attr_group); |
| 2453 | if (res) |
| 2454 | return res; |
| 2455 | } |
| 2456 | } |
| 2457 | |
| 2458 | return (tp_features.wan)? 0 : 1; |
| 2459 | } |
| 2460 | |
| 2461 | static void wan_exit(void) |
| 2462 | { |
| 2463 | sysfs_remove_group(&tpacpi_pdev->dev.kobj, |
| 2464 | &wan_attr_group); |
| 2465 | } |
| 2466 | |
| 2467 | static int wan_get_radiosw(void) |
| 2468 | { |
| 2469 | int status; |
| 2470 | |
| 2471 | if (!tp_features.wan) |
| 2472 | return -ENODEV; |
| 2473 | |
| 2474 | if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
| 2475 | return -EIO; |
| 2476 | |
| 2477 | return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0); |
| 2478 | } |
| 2479 | |
| 2480 | static int wan_set_radiosw(int radio_on) |
| 2481 | { |
| 2482 | int status; |
| 2483 | |
| 2484 | if (!tp_features.wan) |
| 2485 | return -ENODEV; |
| 2486 | |
| 2487 | if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
| 2488 | return -EIO; |
| 2489 | if (radio_on) |
| 2490 | status |= TP_ACPI_WANCARD_RADIOSSW; |
| 2491 | else |
| 2492 | status &= ~TP_ACPI_WANCARD_RADIOSSW; |
| 2493 | if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) |
| 2494 | return -EIO; |
| 2495 | |
| 2496 | return 0; |
| 2497 | } |
| 2498 | |
| 2499 | /* procfs -------------------------------------------------------------- */ |
| 2500 | static int wan_read(char *p) |
| 2501 | { |
| 2502 | int len = 0; |
| 2503 | int status = wan_get_radiosw(); |
| 2504 | |
| 2505 | if (!tp_features.wan) |
| 2506 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 2507 | else { |
| 2508 | len += sprintf(p + len, "status:\t\t%s\n", |
| 2509 | (status)? "enabled" : "disabled"); |
| 2510 | len += sprintf(p + len, "commands:\tenable, disable\n"); |
| 2511 | } |
| 2512 | |
| 2513 | return len; |
| 2514 | } |
| 2515 | |
| 2516 | static int wan_write(char *buf) |
| 2517 | { |
| 2518 | char *cmd; |
| 2519 | |
| 2520 | if (!tp_features.wan) |
| 2521 | return -ENODEV; |
| 2522 | |
| 2523 | while ((cmd = next_cmd(&buf))) { |
| 2524 | if (strlencmp(cmd, "enable") == 0) { |
| 2525 | wan_set_radiosw(1); |
| 2526 | } else if (strlencmp(cmd, "disable") == 0) { |
| 2527 | wan_set_radiosw(0); |
| 2528 | } else |
| 2529 | return -EINVAL; |
| 2530 | } |
| 2531 | |
| 2532 | return 0; |
| 2533 | } |
| 2534 | |
| 2535 | static struct ibm_struct wan_driver_data = { |
| 2536 | .name = "wan", |
| 2537 | .read = wan_read, |
| 2538 | .write = wan_write, |
| 2539 | .exit = wan_exit, |
| 2540 | .flags.experimental = 1, |
| 2541 | }; |
| 2542 | |
| 2543 | /************************************************************************* |
| 2544 | * Video subdriver |
| 2545 | */ |
| 2546 | |
| 2547 | enum video_access_mode { |
| 2548 | TPACPI_VIDEO_NONE = 0, |
| 2549 | TPACPI_VIDEO_570, /* 570 */ |
| 2550 | TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ |
| 2551 | TPACPI_VIDEO_NEW, /* all others */ |
| 2552 | }; |
| 2553 | |
| 2554 | enum { /* video status flags, based on VIDEO_570 */ |
| 2555 | TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ |
| 2556 | TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ |
| 2557 | TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ |
| 2558 | }; |
| 2559 | |
| 2560 | enum { /* TPACPI_VIDEO_570 constants */ |
| 2561 | TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ |
| 2562 | TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to |
| 2563 | * video_status_flags */ |
| 2564 | TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ |
| 2565 | TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ |
| 2566 | }; |
| 2567 | |
| 2568 | static enum video_access_mode video_supported; |
| 2569 | static int video_orig_autosw; |
| 2570 | |
| 2571 | static int video_autosw_get(void); |
| 2572 | static int video_autosw_set(int enable); |
| 2573 | |
| 2574 | TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ |
| 2575 | "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ |
| 2576 | "\\_SB.PCI0.VID0", /* 770e */ |
| 2577 | "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ |
| 2578 | "\\_SB.PCI0.AGP.VID", /* all others */ |
| 2579 | ); /* R30, R31 */ |
| 2580 | |
| 2581 | TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ |
| 2582 | |
| 2583 | static int __init video_init(struct ibm_init_struct *iibm) |
| 2584 | { |
| 2585 | int ivga; |
| 2586 | |
| 2587 | vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); |
| 2588 | |
| 2589 | TPACPI_ACPIHANDLE_INIT(vid); |
| 2590 | TPACPI_ACPIHANDLE_INIT(vid2); |
| 2591 | |
| 2592 | if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) |
| 2593 | /* G41, assume IVGA doesn't change */ |
| 2594 | vid_handle = vid2_handle; |
| 2595 | |
| 2596 | if (!vid_handle) |
| 2597 | /* video switching not supported on R30, R31 */ |
| 2598 | video_supported = TPACPI_VIDEO_NONE; |
| 2599 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) |
| 2600 | /* 570 */ |
| 2601 | video_supported = TPACPI_VIDEO_570; |
| 2602 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) |
| 2603 | /* 600e/x, 770e, 770x */ |
| 2604 | video_supported = TPACPI_VIDEO_770; |
| 2605 | else |
| 2606 | /* all others */ |
| 2607 | video_supported = TPACPI_VIDEO_NEW; |
| 2608 | |
| 2609 | vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", |
| 2610 | str_supported(video_supported != TPACPI_VIDEO_NONE), |
| 2611 | video_supported); |
| 2612 | |
| 2613 | return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; |
| 2614 | } |
| 2615 | |
| 2616 | static void video_exit(void) |
| 2617 | { |
| 2618 | dbg_printk(TPACPI_DBG_EXIT, |
| 2619 | "restoring original video autoswitch mode\n"); |
| 2620 | if (video_autosw_set(video_orig_autosw)) |
| 2621 | printk(TPACPI_ERR "error while trying to restore original " |
| 2622 | "video autoswitch mode\n"); |
| 2623 | } |
| 2624 | |
| 2625 | static int video_outputsw_get(void) |
| 2626 | { |
| 2627 | int status = 0; |
| 2628 | int i; |
| 2629 | |
| 2630 | switch (video_supported) { |
| 2631 | case TPACPI_VIDEO_570: |
| 2632 | if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", |
| 2633 | TP_ACPI_VIDEO_570_PHSCMD)) |
| 2634 | return -EIO; |
| 2635 | status = i & TP_ACPI_VIDEO_570_PHSMASK; |
| 2636 | break; |
| 2637 | case TPACPI_VIDEO_770: |
| 2638 | if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) |
| 2639 | return -EIO; |
| 2640 | if (i) |
| 2641 | status |= TP_ACPI_VIDEO_S_LCD; |
| 2642 | if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) |
| 2643 | return -EIO; |
| 2644 | if (i) |
| 2645 | status |= TP_ACPI_VIDEO_S_CRT; |
| 2646 | break; |
| 2647 | case TPACPI_VIDEO_NEW: |
| 2648 | if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || |
| 2649 | !acpi_evalf(NULL, &i, "\\VCDC", "d")) |
| 2650 | return -EIO; |
| 2651 | if (i) |
| 2652 | status |= TP_ACPI_VIDEO_S_CRT; |
| 2653 | |
| 2654 | if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || |
| 2655 | !acpi_evalf(NULL, &i, "\\VCDL", "d")) |
| 2656 | return -EIO; |
| 2657 | if (i) |
| 2658 | status |= TP_ACPI_VIDEO_S_LCD; |
| 2659 | if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) |
| 2660 | return -EIO; |
| 2661 | if (i) |
| 2662 | status |= TP_ACPI_VIDEO_S_DVI; |
| 2663 | break; |
| 2664 | default: |
| 2665 | return -ENOSYS; |
| 2666 | } |
| 2667 | |
| 2668 | return status; |
| 2669 | } |
| 2670 | |
| 2671 | static int video_outputsw_set(int status) |
| 2672 | { |
| 2673 | int autosw; |
| 2674 | int res = 0; |
| 2675 | |
| 2676 | switch (video_supported) { |
| 2677 | case TPACPI_VIDEO_570: |
| 2678 | res = acpi_evalf(NULL, NULL, |
| 2679 | "\\_SB.PHS2", "vdd", |
| 2680 | TP_ACPI_VIDEO_570_PHS2CMD, |
| 2681 | status | TP_ACPI_VIDEO_570_PHS2SET); |
| 2682 | break; |
| 2683 | case TPACPI_VIDEO_770: |
| 2684 | autosw = video_autosw_get(); |
| 2685 | if (autosw < 0) |
| 2686 | return autosw; |
| 2687 | |
| 2688 | res = video_autosw_set(1); |
| 2689 | if (res) |
| 2690 | return res; |
| 2691 | res = acpi_evalf(vid_handle, NULL, |
| 2692 | "ASWT", "vdd", status * 0x100, 0); |
| 2693 | if (!autosw && video_autosw_set(autosw)) { |
| 2694 | printk(TPACPI_ERR |
| 2695 | "video auto-switch left enabled due to error\n"); |
| 2696 | return -EIO; |
| 2697 | } |
| 2698 | break; |
| 2699 | case TPACPI_VIDEO_NEW: |
| 2700 | res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && |
| 2701 | acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); |
| 2702 | break; |
| 2703 | default: |
| 2704 | return -ENOSYS; |
| 2705 | } |
| 2706 | |
| 2707 | return (res)? 0 : -EIO; |
| 2708 | } |
| 2709 | |
| 2710 | static int video_autosw_get(void) |
| 2711 | { |
| 2712 | int autosw = 0; |
| 2713 | |
| 2714 | switch (video_supported) { |
| 2715 | case TPACPI_VIDEO_570: |
| 2716 | if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) |
| 2717 | return -EIO; |
| 2718 | break; |
| 2719 | case TPACPI_VIDEO_770: |
| 2720 | case TPACPI_VIDEO_NEW: |
| 2721 | if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) |
| 2722 | return -EIO; |
| 2723 | break; |
| 2724 | default: |
| 2725 | return -ENOSYS; |
| 2726 | } |
| 2727 | |
| 2728 | return autosw & 1; |
| 2729 | } |
| 2730 | |
| 2731 | static int video_autosw_set(int enable) |
| 2732 | { |
| 2733 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) |
| 2734 | return -EIO; |
| 2735 | return 0; |
| 2736 | } |
| 2737 | |
| 2738 | static int video_outputsw_cycle(void) |
| 2739 | { |
| 2740 | int autosw = video_autosw_get(); |
| 2741 | int res; |
| 2742 | |
| 2743 | if (autosw < 0) |
| 2744 | return autosw; |
| 2745 | |
| 2746 | switch (video_supported) { |
| 2747 | case TPACPI_VIDEO_570: |
| 2748 | res = video_autosw_set(1); |
| 2749 | if (res) |
| 2750 | return res; |
| 2751 | res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); |
| 2752 | break; |
| 2753 | case TPACPI_VIDEO_770: |
| 2754 | case TPACPI_VIDEO_NEW: |
| 2755 | res = video_autosw_set(1); |
| 2756 | if (res) |
| 2757 | return res; |
| 2758 | res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); |
| 2759 | break; |
| 2760 | default: |
| 2761 | return -ENOSYS; |
| 2762 | } |
| 2763 | if (!autosw && video_autosw_set(autosw)) { |
| 2764 | printk(TPACPI_ERR |
| 2765 | "video auto-switch left enabled due to error\n"); |
| 2766 | return -EIO; |
| 2767 | } |
| 2768 | |
| 2769 | return (res)? 0 : -EIO; |
| 2770 | } |
| 2771 | |
| 2772 | static int video_expand_toggle(void) |
| 2773 | { |
| 2774 | switch (video_supported) { |
| 2775 | case TPACPI_VIDEO_570: |
| 2776 | return acpi_evalf(ec_handle, NULL, "_Q17", "v")? |
| 2777 | 0 : -EIO; |
| 2778 | case TPACPI_VIDEO_770: |
| 2779 | return acpi_evalf(vid_handle, NULL, "VEXP", "v")? |
| 2780 | 0 : -EIO; |
| 2781 | case TPACPI_VIDEO_NEW: |
| 2782 | return acpi_evalf(NULL, NULL, "\\VEXP", "v")? |
| 2783 | 0 : -EIO; |
| 2784 | default: |
| 2785 | return -ENOSYS; |
| 2786 | } |
| 2787 | /* not reached */ |
| 2788 | } |
| 2789 | |
| 2790 | static int video_read(char *p) |
| 2791 | { |
| 2792 | int status, autosw; |
| 2793 | int len = 0; |
| 2794 | |
| 2795 | if (video_supported == TPACPI_VIDEO_NONE) { |
| 2796 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 2797 | return len; |
| 2798 | } |
| 2799 | |
| 2800 | status = video_outputsw_get(); |
| 2801 | if (status < 0) |
| 2802 | return status; |
| 2803 | |
| 2804 | autosw = video_autosw_get(); |
| 2805 | if (autosw < 0) |
| 2806 | return autosw; |
| 2807 | |
| 2808 | len += sprintf(p + len, "status:\t\tsupported\n"); |
| 2809 | len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); |
| 2810 | len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); |
| 2811 | if (video_supported == TPACPI_VIDEO_NEW) |
| 2812 | len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); |
| 2813 | len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); |
| 2814 | len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); |
| 2815 | len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); |
| 2816 | if (video_supported == TPACPI_VIDEO_NEW) |
| 2817 | len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); |
| 2818 | len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); |
| 2819 | len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); |
| 2820 | |
| 2821 | return len; |
| 2822 | } |
| 2823 | |
| 2824 | static int video_write(char *buf) |
| 2825 | { |
| 2826 | char *cmd; |
| 2827 | int enable, disable, status; |
| 2828 | int res; |
| 2829 | |
| 2830 | if (video_supported == TPACPI_VIDEO_NONE) |
| 2831 | return -ENODEV; |
| 2832 | |
| 2833 | enable = 0; |
| 2834 | disable = 0; |
| 2835 | |
| 2836 | while ((cmd = next_cmd(&buf))) { |
| 2837 | if (strlencmp(cmd, "lcd_enable") == 0) { |
| 2838 | enable |= TP_ACPI_VIDEO_S_LCD; |
| 2839 | } else if (strlencmp(cmd, "lcd_disable") == 0) { |
| 2840 | disable |= TP_ACPI_VIDEO_S_LCD; |
| 2841 | } else if (strlencmp(cmd, "crt_enable") == 0) { |
| 2842 | enable |= TP_ACPI_VIDEO_S_CRT; |
| 2843 | } else if (strlencmp(cmd, "crt_disable") == 0) { |
| 2844 | disable |= TP_ACPI_VIDEO_S_CRT; |
| 2845 | } else if (video_supported == TPACPI_VIDEO_NEW && |
| 2846 | strlencmp(cmd, "dvi_enable") == 0) { |
| 2847 | enable |= TP_ACPI_VIDEO_S_DVI; |
| 2848 | } else if (video_supported == TPACPI_VIDEO_NEW && |
| 2849 | strlencmp(cmd, "dvi_disable") == 0) { |
| 2850 | disable |= TP_ACPI_VIDEO_S_DVI; |
| 2851 | } else if (strlencmp(cmd, "auto_enable") == 0) { |
| 2852 | res = video_autosw_set(1); |
| 2853 | if (res) |
| 2854 | return res; |
| 2855 | } else if (strlencmp(cmd, "auto_disable") == 0) { |
| 2856 | res = video_autosw_set(0); |
| 2857 | if (res) |
| 2858 | return res; |
| 2859 | } else if (strlencmp(cmd, "video_switch") == 0) { |
| 2860 | res = video_outputsw_cycle(); |
| 2861 | if (res) |
| 2862 | return res; |
| 2863 | } else if (strlencmp(cmd, "expand_toggle") == 0) { |
| 2864 | res = video_expand_toggle(); |
| 2865 | if (res) |
| 2866 | return res; |
| 2867 | } else |
| 2868 | return -EINVAL; |
| 2869 | } |
| 2870 | |
| 2871 | if (enable || disable) { |
| 2872 | status = video_outputsw_get(); |
| 2873 | if (status < 0) |
| 2874 | return status; |
| 2875 | res = video_outputsw_set((status & ~disable) | enable); |
| 2876 | if (res) |
| 2877 | return res; |
| 2878 | } |
| 2879 | |
| 2880 | return 0; |
| 2881 | } |
| 2882 | |
| 2883 | static struct ibm_struct video_driver_data = { |
| 2884 | .name = "video", |
| 2885 | .read = video_read, |
| 2886 | .write = video_write, |
| 2887 | .exit = video_exit, |
| 2888 | }; |
| 2889 | |
| 2890 | /************************************************************************* |
| 2891 | * Light (thinklight) subdriver |
| 2892 | */ |
| 2893 | |
| 2894 | TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ |
| 2895 | TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ |
| 2896 | |
| 2897 | static int __init light_init(struct ibm_init_struct *iibm) |
| 2898 | { |
| 2899 | vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); |
| 2900 | |
| 2901 | TPACPI_ACPIHANDLE_INIT(ledb); |
| 2902 | TPACPI_ACPIHANDLE_INIT(lght); |
| 2903 | TPACPI_ACPIHANDLE_INIT(cmos); |
| 2904 | |
| 2905 | /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ |
| 2906 | tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; |
| 2907 | |
| 2908 | if (tp_features.light) |
| 2909 | /* light status not supported on |
| 2910 | 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ |
| 2911 | tp_features.light_status = |
| 2912 | acpi_evalf(ec_handle, NULL, "KBLT", "qv"); |
| 2913 | |
| 2914 | vdbg_printk(TPACPI_DBG_INIT, "light is %s\n", |
| 2915 | str_supported(tp_features.light)); |
| 2916 | |
| 2917 | return (tp_features.light)? 0 : 1; |
| 2918 | } |
| 2919 | |
| 2920 | static int light_read(char *p) |
| 2921 | { |
| 2922 | int len = 0; |
| 2923 | int status = 0; |
| 2924 | |
| 2925 | if (!tp_features.light) { |
| 2926 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 2927 | } else if (!tp_features.light_status) { |
| 2928 | len += sprintf(p + len, "status:\t\tunknown\n"); |
| 2929 | len += sprintf(p + len, "commands:\ton, off\n"); |
| 2930 | } else { |
| 2931 | if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) |
| 2932 | return -EIO; |
| 2933 | len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); |
| 2934 | len += sprintf(p + len, "commands:\ton, off\n"); |
| 2935 | } |
| 2936 | |
| 2937 | return len; |
| 2938 | } |
| 2939 | |
| 2940 | static int light_write(char *buf) |
| 2941 | { |
| 2942 | int cmos_cmd, lght_cmd; |
| 2943 | char *cmd; |
| 2944 | int success; |
| 2945 | |
| 2946 | if (!tp_features.light) |
| 2947 | return -ENODEV; |
| 2948 | |
| 2949 | while ((cmd = next_cmd(&buf))) { |
| 2950 | if (strlencmp(cmd, "on") == 0) { |
| 2951 | cmos_cmd = 0x0c; |
| 2952 | lght_cmd = 1; |
| 2953 | } else if (strlencmp(cmd, "off") == 0) { |
| 2954 | cmos_cmd = 0x0d; |
| 2955 | lght_cmd = 0; |
| 2956 | } else |
| 2957 | return -EINVAL; |
| 2958 | |
| 2959 | success = cmos_handle ? |
| 2960 | acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) : |
| 2961 | acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd); |
| 2962 | if (!success) |
| 2963 | return -EIO; |
| 2964 | } |
| 2965 | |
| 2966 | return 0; |
| 2967 | } |
| 2968 | |
| 2969 | static struct ibm_struct light_driver_data = { |
| 2970 | .name = "light", |
| 2971 | .read = light_read, |
| 2972 | .write = light_write, |
| 2973 | }; |
| 2974 | |
| 2975 | /************************************************************************* |
| 2976 | * Dock subdriver |
| 2977 | */ |
| 2978 | |
| 2979 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
| 2980 | |
| 2981 | static void dock_notify(struct ibm_struct *ibm, u32 event); |
| 2982 | static int dock_read(char *p); |
| 2983 | static int dock_write(char *buf); |
| 2984 | |
| 2985 | TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ |
| 2986 | "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ |
| 2987 | "\\_SB.PCI0.PCI1.DOCK", /* all others */ |
| 2988 | "\\_SB.PCI.ISA.SLCE", /* 570 */ |
| 2989 | ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ |
| 2990 | |
| 2991 | /* don't list other alternatives as we install a notify handler on the 570 */ |
| 2992 | TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ |
| 2993 | |
| 2994 | static const struct acpi_device_id ibm_pci_device_ids[] = { |
| 2995 | {PCI_ROOT_HID_STRING, 0}, |
| 2996 | {"", 0}, |
| 2997 | }; |
| 2998 | |
| 2999 | static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = { |
| 3000 | { |
| 3001 | .notify = dock_notify, |
| 3002 | .handle = &dock_handle, |
| 3003 | .type = ACPI_SYSTEM_NOTIFY, |
| 3004 | }, |
| 3005 | { |
| 3006 | /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING. |
| 3007 | * We just use it to get notifications of dock hotplug |
| 3008 | * in very old thinkpads */ |
| 3009 | .hid = ibm_pci_device_ids, |
| 3010 | .notify = dock_notify, |
| 3011 | .handle = &pci_handle, |
| 3012 | .type = ACPI_SYSTEM_NOTIFY, |
| 3013 | }, |
| 3014 | }; |
| 3015 | |
| 3016 | static struct ibm_struct dock_driver_data[2] = { |
| 3017 | { |
| 3018 | .name = "dock", |
| 3019 | .read = dock_read, |
| 3020 | .write = dock_write, |
| 3021 | .acpi = &ibm_dock_acpidriver[0], |
| 3022 | }, |
| 3023 | { |
| 3024 | .name = "dock", |
| 3025 | .acpi = &ibm_dock_acpidriver[1], |
| 3026 | }, |
| 3027 | }; |
| 3028 | |
| 3029 | #define dock_docked() (_sta(dock_handle) & 1) |
| 3030 | |
| 3031 | static int __init dock_init(struct ibm_init_struct *iibm) |
| 3032 | { |
| 3033 | vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n"); |
| 3034 | |
| 3035 | TPACPI_ACPIHANDLE_INIT(dock); |
| 3036 | |
| 3037 | vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n", |
| 3038 | str_supported(dock_handle != NULL)); |
| 3039 | |
| 3040 | return (dock_handle)? 0 : 1; |
| 3041 | } |
| 3042 | |
| 3043 | static int __init dock_init2(struct ibm_init_struct *iibm) |
| 3044 | { |
| 3045 | int dock2_needed; |
| 3046 | |
| 3047 | vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n"); |
| 3048 | |
| 3049 | if (dock_driver_data[0].flags.acpi_driver_registered && |
| 3050 | dock_driver_data[0].flags.acpi_notify_installed) { |
| 3051 | TPACPI_ACPIHANDLE_INIT(pci); |
| 3052 | dock2_needed = (pci_handle != NULL); |
| 3053 | vdbg_printk(TPACPI_DBG_INIT, |
| 3054 | "dock PCI handler for the TP 570 is %s\n", |
| 3055 | str_supported(dock2_needed)); |
| 3056 | } else { |
| 3057 | vdbg_printk(TPACPI_DBG_INIT, |
| 3058 | "dock subdriver part 2 not required\n"); |
| 3059 | dock2_needed = 0; |
| 3060 | } |
| 3061 | |
| 3062 | return (dock2_needed)? 0 : 1; |
| 3063 | } |
| 3064 | |
| 3065 | static void dock_notify(struct ibm_struct *ibm, u32 event) |
| 3066 | { |
| 3067 | int docked = dock_docked(); |
| 3068 | int pci = ibm->acpi->hid && ibm->acpi->device && |
| 3069 | acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids); |
| 3070 | int data; |
| 3071 | |
| 3072 | if (event == 1 && !pci) /* 570 */ |
| 3073 | data = 1; /* button */ |
| 3074 | else if (event == 1 && pci) /* 570 */ |
| 3075 | data = 3; /* dock */ |
| 3076 | else if (event == 3 && docked) |
| 3077 | data = 1; /* button */ |
| 3078 | else if (event == 3 && !docked) |
| 3079 | data = 2; /* undock */ |
| 3080 | else if (event == 0 && docked) |
| 3081 | data = 3; /* dock */ |
| 3082 | else { |
| 3083 | printk(TPACPI_ERR "unknown dock event %d, status %d\n", |
| 3084 | event, _sta(dock_handle)); |
| 3085 | data = 0; /* unknown */ |
| 3086 | } |
| 3087 | acpi_bus_generate_proc_event(ibm->acpi->device, event, data); |
| 3088 | acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, |
| 3089 | ibm->acpi->device->dev.bus_id, |
| 3090 | event, data); |
| 3091 | } |
| 3092 | |
| 3093 | static int dock_read(char *p) |
| 3094 | { |
| 3095 | int len = 0; |
| 3096 | int docked = dock_docked(); |
| 3097 | |
| 3098 | if (!dock_handle) |
| 3099 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 3100 | else if (!docked) |
| 3101 | len += sprintf(p + len, "status:\t\tundocked\n"); |
| 3102 | else { |
| 3103 | len += sprintf(p + len, "status:\t\tdocked\n"); |
| 3104 | len += sprintf(p + len, "commands:\tdock, undock\n"); |
| 3105 | } |
| 3106 | |
| 3107 | return len; |
| 3108 | } |
| 3109 | |
| 3110 | static int dock_write(char *buf) |
| 3111 | { |
| 3112 | char *cmd; |
| 3113 | |
| 3114 | if (!dock_docked()) |
| 3115 | return -ENODEV; |
| 3116 | |
| 3117 | while ((cmd = next_cmd(&buf))) { |
| 3118 | if (strlencmp(cmd, "undock") == 0) { |
| 3119 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) || |
| 3120 | !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) |
| 3121 | return -EIO; |
| 3122 | } else if (strlencmp(cmd, "dock") == 0) { |
| 3123 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) |
| 3124 | return -EIO; |
| 3125 | } else |
| 3126 | return -EINVAL; |
| 3127 | } |
| 3128 | |
| 3129 | return 0; |
| 3130 | } |
| 3131 | |
| 3132 | #endif /* CONFIG_THINKPAD_ACPI_DOCK */ |
| 3133 | |
| 3134 | /************************************************************************* |
| 3135 | * Bay subdriver |
| 3136 | */ |
| 3137 | |
| 3138 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
| 3139 | |
| 3140 | TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ |
| 3141 | "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ |
| 3142 | "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ |
| 3143 | "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ |
| 3144 | ); /* A21e, R30, R31 */ |
| 3145 | TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ |
| 3146 | "_EJ0", /* all others */ |
| 3147 | ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ |
| 3148 | TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ |
| 3149 | "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ |
| 3150 | ); /* all others */ |
| 3151 | TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ |
| 3152 | "_EJ0", /* 770x */ |
| 3153 | ); /* all others */ |
| 3154 | |
| 3155 | static int __init bay_init(struct ibm_init_struct *iibm) |
| 3156 | { |
| 3157 | vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n"); |
| 3158 | |
| 3159 | TPACPI_ACPIHANDLE_INIT(bay); |
| 3160 | if (bay_handle) |
| 3161 | TPACPI_ACPIHANDLE_INIT(bay_ej); |
| 3162 | TPACPI_ACPIHANDLE_INIT(bay2); |
| 3163 | if (bay2_handle) |
| 3164 | TPACPI_ACPIHANDLE_INIT(bay2_ej); |
| 3165 | |
| 3166 | tp_features.bay_status = bay_handle && |
| 3167 | acpi_evalf(bay_handle, NULL, "_STA", "qv"); |
| 3168 | tp_features.bay_status2 = bay2_handle && |
| 3169 | acpi_evalf(bay2_handle, NULL, "_STA", "qv"); |
| 3170 | |
| 3171 | tp_features.bay_eject = bay_handle && bay_ej_handle && |
| 3172 | (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); |
| 3173 | tp_features.bay_eject2 = bay2_handle && bay2_ej_handle && |
| 3174 | (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); |
| 3175 | |
| 3176 | vdbg_printk(TPACPI_DBG_INIT, |
| 3177 | "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n", |
| 3178 | str_supported(tp_features.bay_status), |
| 3179 | str_supported(tp_features.bay_eject), |
| 3180 | str_supported(tp_features.bay_status2), |
| 3181 | str_supported(tp_features.bay_eject2)); |
| 3182 | |
| 3183 | return (tp_features.bay_status || tp_features.bay_eject || |
| 3184 | tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1; |
| 3185 | } |
| 3186 | |
| 3187 | static void bay_notify(struct ibm_struct *ibm, u32 event) |
| 3188 | { |
| 3189 | acpi_bus_generate_proc_event(ibm->acpi->device, event, 0); |
| 3190 | acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, |
| 3191 | ibm->acpi->device->dev.bus_id, |
| 3192 | event, 0); |
| 3193 | } |
| 3194 | |
| 3195 | #define bay_occupied(b) (_sta(b##_handle) & 1) |
| 3196 | |
| 3197 | static int bay_read(char *p) |
| 3198 | { |
| 3199 | int len = 0; |
| 3200 | int occupied = bay_occupied(bay); |
| 3201 | int occupied2 = bay_occupied(bay2); |
| 3202 | int eject, eject2; |
| 3203 | |
| 3204 | len += sprintf(p + len, "status:\t\t%s\n", |
| 3205 | tp_features.bay_status ? |
| 3206 | (occupied ? "occupied" : "unoccupied") : |
| 3207 | "not supported"); |
| 3208 | if (tp_features.bay_status2) |
| 3209 | len += sprintf(p + len, "status2:\t%s\n", occupied2 ? |
| 3210 | "occupied" : "unoccupied"); |
| 3211 | |
| 3212 | eject = tp_features.bay_eject && occupied; |
| 3213 | eject2 = tp_features.bay_eject2 && occupied2; |
| 3214 | |
| 3215 | if (eject && eject2) |
| 3216 | len += sprintf(p + len, "commands:\teject, eject2\n"); |
| 3217 | else if (eject) |
| 3218 | len += sprintf(p + len, "commands:\teject\n"); |
| 3219 | else if (eject2) |
| 3220 | len += sprintf(p + len, "commands:\teject2\n"); |
| 3221 | |
| 3222 | return len; |
| 3223 | } |
| 3224 | |
| 3225 | static int bay_write(char *buf) |
| 3226 | { |
| 3227 | char *cmd; |
| 3228 | |
| 3229 | if (!tp_features.bay_eject && !tp_features.bay_eject2) |
| 3230 | return -ENODEV; |
| 3231 | |
| 3232 | while ((cmd = next_cmd(&buf))) { |
| 3233 | if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) { |
| 3234 | if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) |
| 3235 | return -EIO; |
| 3236 | } else if (tp_features.bay_eject2 && |
| 3237 | strlencmp(cmd, "eject2") == 0) { |
| 3238 | if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) |
| 3239 | return -EIO; |
| 3240 | } else |
| 3241 | return -EINVAL; |
| 3242 | } |
| 3243 | |
| 3244 | return 0; |
| 3245 | } |
| 3246 | |
| 3247 | static struct tp_acpi_drv_struct ibm_bay_acpidriver = { |
| 3248 | .notify = bay_notify, |
| 3249 | .handle = &bay_handle, |
| 3250 | .type = ACPI_SYSTEM_NOTIFY, |
| 3251 | }; |
| 3252 | |
| 3253 | static struct ibm_struct bay_driver_data = { |
| 3254 | .name = "bay", |
| 3255 | .read = bay_read, |
| 3256 | .write = bay_write, |
| 3257 | .acpi = &ibm_bay_acpidriver, |
| 3258 | }; |
| 3259 | |
| 3260 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
| 3261 | |
| 3262 | /************************************************************************* |
| 3263 | * CMOS subdriver |
| 3264 | */ |
| 3265 | |
| 3266 | /* sysfs cmos_command -------------------------------------------------- */ |
| 3267 | static ssize_t cmos_command_store(struct device *dev, |
| 3268 | struct device_attribute *attr, |
| 3269 | const char *buf, size_t count) |
| 3270 | { |
| 3271 | unsigned long cmos_cmd; |
| 3272 | int res; |
| 3273 | |
| 3274 | if (parse_strtoul(buf, 21, &cmos_cmd)) |
| 3275 | return -EINVAL; |
| 3276 | |
| 3277 | res = issue_thinkpad_cmos_command(cmos_cmd); |
| 3278 | return (res)? res : count; |
| 3279 | } |
| 3280 | |
| 3281 | static struct device_attribute dev_attr_cmos_command = |
| 3282 | __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store); |
| 3283 | |
| 3284 | /* --------------------------------------------------------------------- */ |
| 3285 | |
| 3286 | static int __init cmos_init(struct ibm_init_struct *iibm) |
| 3287 | { |
| 3288 | int res; |
| 3289 | |
| 3290 | vdbg_printk(TPACPI_DBG_INIT, |
| 3291 | "initializing cmos commands subdriver\n"); |
| 3292 | |
| 3293 | TPACPI_ACPIHANDLE_INIT(cmos); |
| 3294 | |
| 3295 | vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", |
| 3296 | str_supported(cmos_handle != NULL)); |
| 3297 | |
| 3298 | res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); |
| 3299 | if (res) |
| 3300 | return res; |
| 3301 | |
| 3302 | return (cmos_handle)? 0 : 1; |
| 3303 | } |
| 3304 | |
| 3305 | static void cmos_exit(void) |
| 3306 | { |
| 3307 | device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); |
| 3308 | } |
| 3309 | |
| 3310 | static int cmos_read(char *p) |
| 3311 | { |
| 3312 | int len = 0; |
| 3313 | |
| 3314 | /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
| 3315 | R30, R31, T20-22, X20-21 */ |
| 3316 | if (!cmos_handle) |
| 3317 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 3318 | else { |
| 3319 | len += sprintf(p + len, "status:\t\tsupported\n"); |
| 3320 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); |
| 3321 | } |
| 3322 | |
| 3323 | return len; |
| 3324 | } |
| 3325 | |
| 3326 | static int cmos_write(char *buf) |
| 3327 | { |
| 3328 | char *cmd; |
| 3329 | int cmos_cmd, res; |
| 3330 | |
| 3331 | while ((cmd = next_cmd(&buf))) { |
| 3332 | if (sscanf(cmd, "%u", &cmos_cmd) == 1 && |
| 3333 | cmos_cmd >= 0 && cmos_cmd <= 21) { |
| 3334 | /* cmos_cmd set */ |
| 3335 | } else |
| 3336 | return -EINVAL; |
| 3337 | |
| 3338 | res = issue_thinkpad_cmos_command(cmos_cmd); |
| 3339 | if (res) |
| 3340 | return res; |
| 3341 | } |
| 3342 | |
| 3343 | return 0; |
| 3344 | } |
| 3345 | |
| 3346 | static struct ibm_struct cmos_driver_data = { |
| 3347 | .name = "cmos", |
| 3348 | .read = cmos_read, |
| 3349 | .write = cmos_write, |
| 3350 | .exit = cmos_exit, |
| 3351 | }; |
| 3352 | |
| 3353 | /************************************************************************* |
| 3354 | * LED subdriver |
| 3355 | */ |
| 3356 | |
| 3357 | enum led_access_mode { |
| 3358 | TPACPI_LED_NONE = 0, |
| 3359 | TPACPI_LED_570, /* 570 */ |
| 3360 | TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ |
| 3361 | TPACPI_LED_NEW, /* all others */ |
| 3362 | }; |
| 3363 | |
| 3364 | enum { /* For TPACPI_LED_OLD */ |
| 3365 | TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ |
| 3366 | TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ |
| 3367 | TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ |
| 3368 | }; |
| 3369 | |
| 3370 | static enum led_access_mode led_supported; |
| 3371 | |
| 3372 | TPACPI_HANDLE(led, ec, "SLED", /* 570 */ |
| 3373 | "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */ |
| 3374 | /* T20-22, X20-21 */ |
| 3375 | "LED", /* all others */ |
| 3376 | ); /* R30, R31 */ |
| 3377 | |
| 3378 | static int __init led_init(struct ibm_init_struct *iibm) |
| 3379 | { |
| 3380 | vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); |
| 3381 | |
| 3382 | TPACPI_ACPIHANDLE_INIT(led); |
| 3383 | |
| 3384 | if (!led_handle) |
| 3385 | /* led not supported on R30, R31 */ |
| 3386 | led_supported = TPACPI_LED_NONE; |
| 3387 | else if (strlencmp(led_path, "SLED") == 0) |
| 3388 | /* 570 */ |
| 3389 | led_supported = TPACPI_LED_570; |
| 3390 | else if (strlencmp(led_path, "SYSL") == 0) |
| 3391 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ |
| 3392 | led_supported = TPACPI_LED_OLD; |
| 3393 | else |
| 3394 | /* all others */ |
| 3395 | led_supported = TPACPI_LED_NEW; |
| 3396 | |
| 3397 | vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", |
| 3398 | str_supported(led_supported), led_supported); |
| 3399 | |
| 3400 | return (led_supported != TPACPI_LED_NONE)? 0 : 1; |
| 3401 | } |
| 3402 | |
| 3403 | #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking")) |
| 3404 | |
| 3405 | static int led_read(char *p) |
| 3406 | { |
| 3407 | int len = 0; |
| 3408 | |
| 3409 | if (!led_supported) { |
| 3410 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 3411 | return len; |
| 3412 | } |
| 3413 | len += sprintf(p + len, "status:\t\tsupported\n"); |
| 3414 | |
| 3415 | if (led_supported == TPACPI_LED_570) { |
| 3416 | /* 570 */ |
| 3417 | int i, status; |
| 3418 | for (i = 0; i < 8; i++) { |
| 3419 | if (!acpi_evalf(ec_handle, |
| 3420 | &status, "GLED", "dd", 1 << i)) |
| 3421 | return -EIO; |
| 3422 | len += sprintf(p + len, "%d:\t\t%s\n", |
| 3423 | i, led_status(status)); |
| 3424 | } |
| 3425 | } |
| 3426 | |
| 3427 | len += sprintf(p + len, "commands:\t" |
| 3428 | "<led> on, <led> off, <led> blink (<led> is 0-7)\n"); |
| 3429 | |
| 3430 | return len; |
| 3431 | } |
| 3432 | |
| 3433 | /* off, on, blink */ |
| 3434 | static const int led_sled_arg1[] = { 0, 1, 3 }; |
| 3435 | static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */ |
| 3436 | static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */ |
| 3437 | static const int led_led_arg1[] = { 0, 0x80, 0xc0 }; |
| 3438 | |
| 3439 | static int led_write(char *buf) |
| 3440 | { |
| 3441 | char *cmd; |
| 3442 | int led, ind, ret; |
| 3443 | |
| 3444 | if (!led_supported) |
| 3445 | return -ENODEV; |
| 3446 | |
| 3447 | while ((cmd = next_cmd(&buf))) { |
| 3448 | if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7) |
| 3449 | return -EINVAL; |
| 3450 | |
| 3451 | if (strstr(cmd, "off")) { |
| 3452 | ind = 0; |
| 3453 | } else if (strstr(cmd, "on")) { |
| 3454 | ind = 1; |
| 3455 | } else if (strstr(cmd, "blink")) { |
| 3456 | ind = 2; |
| 3457 | } else |
| 3458 | return -EINVAL; |
| 3459 | |
| 3460 | if (led_supported == TPACPI_LED_570) { |
| 3461 | /* 570 */ |
| 3462 | led = 1 << led; |
| 3463 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
| 3464 | led, led_sled_arg1[ind])) |
| 3465 | return -EIO; |
| 3466 | } else if (led_supported == TPACPI_LED_OLD) { |
| 3467 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ |
| 3468 | led = 1 << led; |
| 3469 | ret = ec_write(TPACPI_LED_EC_HLMS, led); |
| 3470 | if (ret >= 0) |
| 3471 | ret = ec_write(TPACPI_LED_EC_HLBL, |
| 3472 | led * led_exp_hlbl[ind]); |
| 3473 | if (ret >= 0) |
| 3474 | ret = ec_write(TPACPI_LED_EC_HLCL, |
| 3475 | led * led_exp_hlcl[ind]); |
| 3476 | if (ret < 0) |
| 3477 | return ret; |
| 3478 | } else { |
| 3479 | /* all others */ |
| 3480 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
| 3481 | led, led_led_arg1[ind])) |
| 3482 | return -EIO; |
| 3483 | } |
| 3484 | } |
| 3485 | |
| 3486 | return 0; |
| 3487 | } |
| 3488 | |
| 3489 | static struct ibm_struct led_driver_data = { |
| 3490 | .name = "led", |
| 3491 | .read = led_read, |
| 3492 | .write = led_write, |
| 3493 | }; |
| 3494 | |
| 3495 | /************************************************************************* |
| 3496 | * Beep subdriver |
| 3497 | */ |
| 3498 | |
| 3499 | TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ |
| 3500 | |
| 3501 | static int __init beep_init(struct ibm_init_struct *iibm) |
| 3502 | { |
| 3503 | vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); |
| 3504 | |
| 3505 | TPACPI_ACPIHANDLE_INIT(beep); |
| 3506 | |
| 3507 | vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", |
| 3508 | str_supported(beep_handle != NULL)); |
| 3509 | |
| 3510 | return (beep_handle)? 0 : 1; |
| 3511 | } |
| 3512 | |
| 3513 | static int beep_read(char *p) |
| 3514 | { |
| 3515 | int len = 0; |
| 3516 | |
| 3517 | if (!beep_handle) |
| 3518 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 3519 | else { |
| 3520 | len += sprintf(p + len, "status:\t\tsupported\n"); |
| 3521 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); |
| 3522 | } |
| 3523 | |
| 3524 | return len; |
| 3525 | } |
| 3526 | |
| 3527 | static int beep_write(char *buf) |
| 3528 | { |
| 3529 | char *cmd; |
| 3530 | int beep_cmd; |
| 3531 | |
| 3532 | if (!beep_handle) |
| 3533 | return -ENODEV; |
| 3534 | |
| 3535 | while ((cmd = next_cmd(&buf))) { |
| 3536 | if (sscanf(cmd, "%u", &beep_cmd) == 1 && |
| 3537 | beep_cmd >= 0 && beep_cmd <= 17) { |
| 3538 | /* beep_cmd set */ |
| 3539 | } else |
| 3540 | return -EINVAL; |
| 3541 | if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) |
| 3542 | return -EIO; |
| 3543 | } |
| 3544 | |
| 3545 | return 0; |
| 3546 | } |
| 3547 | |
| 3548 | static struct ibm_struct beep_driver_data = { |
| 3549 | .name = "beep", |
| 3550 | .read = beep_read, |
| 3551 | .write = beep_write, |
| 3552 | }; |
| 3553 | |
| 3554 | /************************************************************************* |
| 3555 | * Thermal subdriver |
| 3556 | */ |
| 3557 | |
| 3558 | enum thermal_access_mode { |
| 3559 | TPACPI_THERMAL_NONE = 0, /* No thermal support */ |
| 3560 | TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ |
| 3561 | TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ |
| 3562 | TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ |
| 3563 | TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ |
| 3564 | }; |
| 3565 | |
| 3566 | enum { /* TPACPI_THERMAL_TPEC_* */ |
| 3567 | TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ |
| 3568 | TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ |
| 3569 | TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ |
| 3570 | }; |
| 3571 | |
| 3572 | #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ |
| 3573 | struct ibm_thermal_sensors_struct { |
| 3574 | s32 temp[TPACPI_MAX_THERMAL_SENSORS]; |
| 3575 | }; |
| 3576 | |
| 3577 | static enum thermal_access_mode thermal_read_mode; |
| 3578 | |
| 3579 | /* idx is zero-based */ |
| 3580 | static int thermal_get_sensor(int idx, s32 *value) |
| 3581 | { |
| 3582 | int t; |
| 3583 | s8 tmp; |
| 3584 | char tmpi[5]; |
| 3585 | |
| 3586 | t = TP_EC_THERMAL_TMP0; |
| 3587 | |
| 3588 | switch (thermal_read_mode) { |
| 3589 | #if TPACPI_MAX_THERMAL_SENSORS >= 16 |
| 3590 | case TPACPI_THERMAL_TPEC_16: |
| 3591 | if (idx >= 8 && idx <= 15) { |
| 3592 | t = TP_EC_THERMAL_TMP8; |
| 3593 | idx -= 8; |
| 3594 | } |
| 3595 | /* fallthrough */ |
| 3596 | #endif |
| 3597 | case TPACPI_THERMAL_TPEC_8: |
| 3598 | if (idx <= 7) { |
| 3599 | if (!acpi_ec_read(t + idx, &tmp)) |
| 3600 | return -EIO; |
| 3601 | *value = tmp * 1000; |
| 3602 | return 0; |
| 3603 | } |
| 3604 | break; |
| 3605 | |
| 3606 | case TPACPI_THERMAL_ACPI_UPDT: |
| 3607 | if (idx <= 7) { |
| 3608 | snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); |
| 3609 | if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) |
| 3610 | return -EIO; |
| 3611 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
| 3612 | return -EIO; |
| 3613 | *value = (t - 2732) * 100; |
| 3614 | return 0; |
| 3615 | } |
| 3616 | break; |
| 3617 | |
| 3618 | case TPACPI_THERMAL_ACPI_TMP07: |
| 3619 | if (idx <= 7) { |
| 3620 | snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); |
| 3621 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
| 3622 | return -EIO; |
| 3623 | if (t > 127 || t < -127) |
| 3624 | t = TP_EC_THERMAL_TMP_NA; |
| 3625 | *value = t * 1000; |
| 3626 | return 0; |
| 3627 | } |
| 3628 | break; |
| 3629 | |
| 3630 | case TPACPI_THERMAL_NONE: |
| 3631 | default: |
| 3632 | return -ENOSYS; |
| 3633 | } |
| 3634 | |
| 3635 | return -EINVAL; |
| 3636 | } |
| 3637 | |
| 3638 | static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) |
| 3639 | { |
| 3640 | int res, i; |
| 3641 | int n; |
| 3642 | |
| 3643 | n = 8; |
| 3644 | i = 0; |
| 3645 | |
| 3646 | if (!s) |
| 3647 | return -EINVAL; |
| 3648 | |
| 3649 | if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) |
| 3650 | n = 16; |
| 3651 | |
| 3652 | for (i = 0 ; i < n; i++) { |
| 3653 | res = thermal_get_sensor(i, &s->temp[i]); |
| 3654 | if (res) |
| 3655 | return res; |
| 3656 | } |
| 3657 | |
| 3658 | return n; |
| 3659 | } |
| 3660 | |
| 3661 | /* sysfs temp##_input -------------------------------------------------- */ |
| 3662 | |
| 3663 | static ssize_t thermal_temp_input_show(struct device *dev, |
| 3664 | struct device_attribute *attr, |
| 3665 | char *buf) |
| 3666 | { |
| 3667 | struct sensor_device_attribute *sensor_attr = |
| 3668 | to_sensor_dev_attr(attr); |
| 3669 | int idx = sensor_attr->index; |
| 3670 | s32 value; |
| 3671 | int res; |
| 3672 | |
| 3673 | res = thermal_get_sensor(idx, &value); |
| 3674 | if (res) |
| 3675 | return res; |
| 3676 | if (value == TP_EC_THERMAL_TMP_NA * 1000) |
| 3677 | return -ENXIO; |
| 3678 | |
| 3679 | return snprintf(buf, PAGE_SIZE, "%d\n", value); |
| 3680 | } |
| 3681 | |
| 3682 | #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ |
| 3683 | SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ |
| 3684 | thermal_temp_input_show, NULL, _idxB) |
| 3685 | |
| 3686 | static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { |
| 3687 | THERMAL_SENSOR_ATTR_TEMP(1, 0), |
| 3688 | THERMAL_SENSOR_ATTR_TEMP(2, 1), |
| 3689 | THERMAL_SENSOR_ATTR_TEMP(3, 2), |
| 3690 | THERMAL_SENSOR_ATTR_TEMP(4, 3), |
| 3691 | THERMAL_SENSOR_ATTR_TEMP(5, 4), |
| 3692 | THERMAL_SENSOR_ATTR_TEMP(6, 5), |
| 3693 | THERMAL_SENSOR_ATTR_TEMP(7, 6), |
| 3694 | THERMAL_SENSOR_ATTR_TEMP(8, 7), |
| 3695 | THERMAL_SENSOR_ATTR_TEMP(9, 8), |
| 3696 | THERMAL_SENSOR_ATTR_TEMP(10, 9), |
| 3697 | THERMAL_SENSOR_ATTR_TEMP(11, 10), |
| 3698 | THERMAL_SENSOR_ATTR_TEMP(12, 11), |
| 3699 | THERMAL_SENSOR_ATTR_TEMP(13, 12), |
| 3700 | THERMAL_SENSOR_ATTR_TEMP(14, 13), |
| 3701 | THERMAL_SENSOR_ATTR_TEMP(15, 14), |
| 3702 | THERMAL_SENSOR_ATTR_TEMP(16, 15), |
| 3703 | }; |
| 3704 | |
| 3705 | #define THERMAL_ATTRS(X) \ |
| 3706 | &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr |
| 3707 | |
| 3708 | static struct attribute *thermal_temp_input_attr[] = { |
| 3709 | THERMAL_ATTRS(8), |
| 3710 | THERMAL_ATTRS(9), |
| 3711 | THERMAL_ATTRS(10), |
| 3712 | THERMAL_ATTRS(11), |
| 3713 | THERMAL_ATTRS(12), |
| 3714 | THERMAL_ATTRS(13), |
| 3715 | THERMAL_ATTRS(14), |
| 3716 | THERMAL_ATTRS(15), |
| 3717 | THERMAL_ATTRS(0), |
| 3718 | THERMAL_ATTRS(1), |
| 3719 | THERMAL_ATTRS(2), |
| 3720 | THERMAL_ATTRS(3), |
| 3721 | THERMAL_ATTRS(4), |
| 3722 | THERMAL_ATTRS(5), |
| 3723 | THERMAL_ATTRS(6), |
| 3724 | THERMAL_ATTRS(7), |
| 3725 | NULL |
| 3726 | }; |
| 3727 | |
| 3728 | static const struct attribute_group thermal_temp_input16_group = { |
| 3729 | .attrs = thermal_temp_input_attr |
| 3730 | }; |
| 3731 | |
| 3732 | static const struct attribute_group thermal_temp_input8_group = { |
| 3733 | .attrs = &thermal_temp_input_attr[8] |
| 3734 | }; |
| 3735 | |
| 3736 | #undef THERMAL_SENSOR_ATTR_TEMP |
| 3737 | #undef THERMAL_ATTRS |
| 3738 | |
| 3739 | /* --------------------------------------------------------------------- */ |
| 3740 | |
| 3741 | static int __init thermal_init(struct ibm_init_struct *iibm) |
| 3742 | { |
| 3743 | u8 t, ta1, ta2; |
| 3744 | int i; |
| 3745 | int acpi_tmp7; |
| 3746 | int res; |
| 3747 | |
| 3748 | vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); |
| 3749 | |
| 3750 | acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); |
| 3751 | |
| 3752 | if (thinkpad_id.ec_model) { |
| 3753 | /* |
| 3754 | * Direct EC access mode: sensors at registers |
| 3755 | * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for |
| 3756 | * non-implemented, thermal sensors return 0x80 when |
| 3757 | * not available |
| 3758 | */ |
| 3759 | |
| 3760 | ta1 = ta2 = 0; |
| 3761 | for (i = 0; i < 8; i++) { |
| 3762 | if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { |
| 3763 | ta1 |= t; |
| 3764 | } else { |
| 3765 | ta1 = 0; |
| 3766 | break; |
| 3767 | } |
| 3768 | if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { |
| 3769 | ta2 |= t; |
| 3770 | } else { |
| 3771 | ta1 = 0; |
| 3772 | break; |
| 3773 | } |
| 3774 | } |
| 3775 | if (ta1 == 0) { |
| 3776 | /* This is sheer paranoia, but we handle it anyway */ |
| 3777 | if (acpi_tmp7) { |
| 3778 | printk(TPACPI_ERR |
| 3779 | "ThinkPad ACPI EC access misbehaving, " |
| 3780 | "falling back to ACPI TMPx access " |
| 3781 | "mode\n"); |
| 3782 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
| 3783 | } else { |
| 3784 | printk(TPACPI_ERR |
| 3785 | "ThinkPad ACPI EC access misbehaving, " |
| 3786 | "disabling thermal sensors access\n"); |
| 3787 | thermal_read_mode = TPACPI_THERMAL_NONE; |
| 3788 | } |
| 3789 | } else { |
| 3790 | thermal_read_mode = |
| 3791 | (ta2 != 0) ? |
| 3792 | TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; |
| 3793 | } |
| 3794 | } else if (acpi_tmp7) { |
| 3795 | if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { |
| 3796 | /* 600e/x, 770e, 770x */ |
| 3797 | thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; |
| 3798 | } else { |
| 3799 | /* Standard ACPI TMPx access, max 8 sensors */ |
| 3800 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
| 3801 | } |
| 3802 | } else { |
| 3803 | /* temperatures not supported on 570, G4x, R30, R31, R32 */ |
| 3804 | thermal_read_mode = TPACPI_THERMAL_NONE; |
| 3805 | } |
| 3806 | |
| 3807 | vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", |
| 3808 | str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), |
| 3809 | thermal_read_mode); |
| 3810 | |
| 3811 | switch (thermal_read_mode) { |
| 3812 | case TPACPI_THERMAL_TPEC_16: |
| 3813 | res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| 3814 | &thermal_temp_input16_group); |
| 3815 | if (res) |
| 3816 | return res; |
| 3817 | break; |
| 3818 | case TPACPI_THERMAL_TPEC_8: |
| 3819 | case TPACPI_THERMAL_ACPI_TMP07: |
| 3820 | case TPACPI_THERMAL_ACPI_UPDT: |
| 3821 | res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| 3822 | &thermal_temp_input8_group); |
| 3823 | if (res) |
| 3824 | return res; |
| 3825 | break; |
| 3826 | case TPACPI_THERMAL_NONE: |
| 3827 | default: |
| 3828 | return 1; |
| 3829 | } |
| 3830 | |
| 3831 | return 0; |
| 3832 | } |
| 3833 | |
| 3834 | static void thermal_exit(void) |
| 3835 | { |
| 3836 | switch (thermal_read_mode) { |
| 3837 | case TPACPI_THERMAL_TPEC_16: |
| 3838 | sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| 3839 | &thermal_temp_input16_group); |
| 3840 | break; |
| 3841 | case TPACPI_THERMAL_TPEC_8: |
| 3842 | case TPACPI_THERMAL_ACPI_TMP07: |
| 3843 | case TPACPI_THERMAL_ACPI_UPDT: |
| 3844 | sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, |
| 3845 | &thermal_temp_input16_group); |
| 3846 | break; |
| 3847 | case TPACPI_THERMAL_NONE: |
| 3848 | default: |
| 3849 | break; |
| 3850 | } |
| 3851 | } |
| 3852 | |
| 3853 | static int thermal_read(char *p) |
| 3854 | { |
| 3855 | int len = 0; |
| 3856 | int n, i; |
| 3857 | struct ibm_thermal_sensors_struct t; |
| 3858 | |
| 3859 | n = thermal_get_sensors(&t); |
| 3860 | if (unlikely(n < 0)) |
| 3861 | return n; |
| 3862 | |
| 3863 | len += sprintf(p + len, "temperatures:\t"); |
| 3864 | |
| 3865 | if (n > 0) { |
| 3866 | for (i = 0; i < (n - 1); i++) |
| 3867 | len += sprintf(p + len, "%d ", t.temp[i] / 1000); |
| 3868 | len += sprintf(p + len, "%d\n", t.temp[i] / 1000); |
| 3869 | } else |
| 3870 | len += sprintf(p + len, "not supported\n"); |
| 3871 | |
| 3872 | return len; |
| 3873 | } |
| 3874 | |
| 3875 | static struct ibm_struct thermal_driver_data = { |
| 3876 | .name = "thermal", |
| 3877 | .read = thermal_read, |
| 3878 | .exit = thermal_exit, |
| 3879 | }; |
| 3880 | |
| 3881 | /************************************************************************* |
| 3882 | * EC Dump subdriver |
| 3883 | */ |
| 3884 | |
| 3885 | static u8 ecdump_regs[256]; |
| 3886 | |
| 3887 | static int ecdump_read(char *p) |
| 3888 | { |
| 3889 | int len = 0; |
| 3890 | int i, j; |
| 3891 | u8 v; |
| 3892 | |
| 3893 | len += sprintf(p + len, "EC " |
| 3894 | " +00 +01 +02 +03 +04 +05 +06 +07" |
| 3895 | " +08 +09 +0a +0b +0c +0d +0e +0f\n"); |
| 3896 | for (i = 0; i < 256; i += 16) { |
| 3897 | len += sprintf(p + len, "EC 0x%02x:", i); |
| 3898 | for (j = 0; j < 16; j++) { |
| 3899 | if (!acpi_ec_read(i + j, &v)) |
| 3900 | break; |
| 3901 | if (v != ecdump_regs[i + j]) |
| 3902 | len += sprintf(p + len, " *%02x", v); |
| 3903 | else |
| 3904 | len += sprintf(p + len, " %02x", v); |
| 3905 | ecdump_regs[i + j] = v; |
| 3906 | } |
| 3907 | len += sprintf(p + len, "\n"); |
| 3908 | if (j != 16) |
| 3909 | break; |
| 3910 | } |
| 3911 | |
| 3912 | /* These are way too dangerous to advertise openly... */ |
| 3913 | #if 0 |
| 3914 | len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" |
| 3915 | " (<offset> is 00-ff, <value> is 00-ff)\n"); |
| 3916 | len += sprintf(p + len, "commands:\t0x<offset> <value> " |
| 3917 | " (<offset> is 00-ff, <value> is 0-255)\n"); |
| 3918 | #endif |
| 3919 | return len; |
| 3920 | } |
| 3921 | |
| 3922 | static int ecdump_write(char *buf) |
| 3923 | { |
| 3924 | char *cmd; |
| 3925 | int i, v; |
| 3926 | |
| 3927 | while ((cmd = next_cmd(&buf))) { |
| 3928 | if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { |
| 3929 | /* i and v set */ |
| 3930 | } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { |
| 3931 | /* i and v set */ |
| 3932 | } else |
| 3933 | return -EINVAL; |
| 3934 | if (i >= 0 && i < 256 && v >= 0 && v < 256) { |
| 3935 | if (!acpi_ec_write(i, v)) |
| 3936 | return -EIO; |
| 3937 | } else |
| 3938 | return -EINVAL; |
| 3939 | } |
| 3940 | |
| 3941 | return 0; |
| 3942 | } |
| 3943 | |
| 3944 | static struct ibm_struct ecdump_driver_data = { |
| 3945 | .name = "ecdump", |
| 3946 | .read = ecdump_read, |
| 3947 | .write = ecdump_write, |
| 3948 | .flags.experimental = 1, |
| 3949 | }; |
| 3950 | |
| 3951 | /************************************************************************* |
| 3952 | * Backlight/brightness subdriver |
| 3953 | */ |
| 3954 | |
| 3955 | #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" |
| 3956 | |
| 3957 | static struct backlight_device *ibm_backlight_device; |
| 3958 | static int brightness_offset = 0x31; |
| 3959 | static int brightness_mode; |
| 3960 | static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ |
| 3961 | |
| 3962 | static struct mutex brightness_mutex; |
| 3963 | |
| 3964 | /* |
| 3965 | * ThinkPads can read brightness from two places: EC 0x31, or |
| 3966 | * CMOS NVRAM byte 0x5E, bits 0-3. |
| 3967 | */ |
| 3968 | static int brightness_get(struct backlight_device *bd) |
| 3969 | { |
| 3970 | u8 lec = 0, lcmos = 0, level = 0; |
| 3971 | |
| 3972 | if (brightness_mode & 1) { |
| 3973 | if (!acpi_ec_read(brightness_offset, &lec)) |
| 3974 | return -EIO; |
| 3975 | lec &= (tp_features.bright_16levels)? 0x0f : 0x07; |
| 3976 | level = lec; |
| 3977 | }; |
| 3978 | if (brightness_mode & 2) { |
| 3979 | lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) |
| 3980 | & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) |
| 3981 | >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; |
| 3982 | lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07; |
| 3983 | level = lcmos; |
| 3984 | } |
| 3985 | |
| 3986 | if (brightness_mode == 3 && lec != lcmos) { |
| 3987 | printk(TPACPI_ERR |
| 3988 | "CMOS NVRAM (%u) and EC (%u) do not agree " |
| 3989 | "on display brightness level\n", |
| 3990 | (unsigned int) lcmos, |
| 3991 | (unsigned int) lec); |
| 3992 | return -EIO; |
| 3993 | } |
| 3994 | |
| 3995 | return level; |
| 3996 | } |
| 3997 | |
| 3998 | /* May return EINTR which can always be mapped to ERESTARTSYS */ |
| 3999 | static int brightness_set(int value) |
| 4000 | { |
| 4001 | int cmos_cmd, inc, i, res; |
| 4002 | int current_value; |
| 4003 | |
| 4004 | if (value > ((tp_features.bright_16levels)? 15 : 7)) |
| 4005 | return -EINVAL; |
| 4006 | |
| 4007 | res = mutex_lock_interruptible(&brightness_mutex); |
| 4008 | if (res < 0) |
| 4009 | return res; |
| 4010 | |
| 4011 | current_value = brightness_get(NULL); |
| 4012 | if (current_value < 0) { |
| 4013 | res = current_value; |
| 4014 | goto errout; |
| 4015 | } |
| 4016 | |
| 4017 | cmos_cmd = value > current_value ? |
| 4018 | TP_CMOS_BRIGHTNESS_UP : |
| 4019 | TP_CMOS_BRIGHTNESS_DOWN; |
| 4020 | inc = (value > current_value)? 1 : -1; |
| 4021 | |
| 4022 | res = 0; |
| 4023 | for (i = current_value; i != value; i += inc) { |
| 4024 | if ((brightness_mode & 2) && |
| 4025 | issue_thinkpad_cmos_command(cmos_cmd)) { |
| 4026 | res = -EIO; |
| 4027 | goto errout; |
| 4028 | } |
| 4029 | if ((brightness_mode & 1) && |
| 4030 | !acpi_ec_write(brightness_offset, i + inc)) { |
| 4031 | res = -EIO; |
| 4032 | goto errout;; |
| 4033 | } |
| 4034 | } |
| 4035 | |
| 4036 | errout: |
| 4037 | mutex_unlock(&brightness_mutex); |
| 4038 | return res; |
| 4039 | } |
| 4040 | |
| 4041 | /* sysfs backlight class ----------------------------------------------- */ |
| 4042 | |
| 4043 | static int brightness_update_status(struct backlight_device *bd) |
| 4044 | { |
| 4045 | /* it is the backlight class's job (caller) to handle |
| 4046 | * EINTR and other errors properly */ |
| 4047 | return brightness_set( |
| 4048 | (bd->props.fb_blank == FB_BLANK_UNBLANK && |
| 4049 | bd->props.power == FB_BLANK_UNBLANK) ? |
| 4050 | bd->props.brightness : 0); |
| 4051 | } |
| 4052 | |
| 4053 | static struct backlight_ops ibm_backlight_data = { |
| 4054 | .get_brightness = brightness_get, |
| 4055 | .update_status = brightness_update_status, |
| 4056 | }; |
| 4057 | |
| 4058 | /* --------------------------------------------------------------------- */ |
| 4059 | |
| 4060 | static int __init tpacpi_query_bcll_levels(acpi_handle handle) |
| 4061 | { |
| 4062 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 4063 | union acpi_object *obj; |
| 4064 | int rc; |
| 4065 | |
| 4066 | if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) { |
| 4067 | obj = (union acpi_object *)buffer.pointer; |
| 4068 | if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { |
| 4069 | printk(TPACPI_ERR "Unknown BCLL data, " |
| 4070 | "please report this to %s\n", TPACPI_MAIL); |
| 4071 | rc = 0; |
| 4072 | } else { |
| 4073 | rc = obj->package.count; |
| 4074 | } |
| 4075 | } else { |
| 4076 | return 0; |
| 4077 | } |
| 4078 | |
| 4079 | kfree(buffer.pointer); |
| 4080 | return rc; |
| 4081 | } |
| 4082 | |
| 4083 | static acpi_status __init brightness_find_bcll(acpi_handle handle, u32 lvl, |
| 4084 | void *context, void **rv) |
| 4085 | { |
| 4086 | char name[ACPI_PATH_SEGMENT_LENGTH]; |
| 4087 | struct acpi_buffer buffer = { sizeof(name), &name }; |
| 4088 | |
| 4089 | if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && |
| 4090 | !strncmp("BCLL", name, sizeof(name) - 1)) { |
| 4091 | if (tpacpi_query_bcll_levels(handle) == 16) { |
| 4092 | *rv = handle; |
| 4093 | return AE_CTRL_TERMINATE; |
| 4094 | } else { |
| 4095 | return AE_OK; |
| 4096 | } |
| 4097 | } else { |
| 4098 | return AE_OK; |
| 4099 | } |
| 4100 | } |
| 4101 | |
| 4102 | static int __init brightness_check_levels(void) |
| 4103 | { |
| 4104 | int status; |
| 4105 | void *found_node = NULL; |
| 4106 | |
| 4107 | if (!vid_handle) { |
| 4108 | TPACPI_ACPIHANDLE_INIT(vid); |
| 4109 | } |
| 4110 | if (!vid_handle) |
| 4111 | return 0; |
| 4112 | |
| 4113 | /* Search for a BCLL package with 16 levels */ |
| 4114 | status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3, |
| 4115 | brightness_find_bcll, NULL, |
| 4116 | &found_node); |
| 4117 | |
| 4118 | return (ACPI_SUCCESS(status) && found_node != NULL); |
| 4119 | } |
| 4120 | |
| 4121 | static acpi_status __init brightness_find_bcl(acpi_handle handle, u32 lvl, |
| 4122 | void *context, void **rv) |
| 4123 | { |
| 4124 | char name[ACPI_PATH_SEGMENT_LENGTH]; |
| 4125 | struct acpi_buffer buffer = { sizeof(name), &name }; |
| 4126 | |
| 4127 | if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && |
| 4128 | !strncmp("_BCL", name, sizeof(name) - 1)) { |
| 4129 | *rv = handle; |
| 4130 | return AE_CTRL_TERMINATE; |
| 4131 | } else { |
| 4132 | return AE_OK; |
| 4133 | } |
| 4134 | } |
| 4135 | |
| 4136 | static int __init brightness_check_std_acpi_support(void) |
| 4137 | { |
| 4138 | int status; |
| 4139 | void *found_node = NULL; |
| 4140 | |
| 4141 | if (!vid_handle) { |
| 4142 | TPACPI_ACPIHANDLE_INIT(vid); |
| 4143 | } |
| 4144 | if (!vid_handle) |
| 4145 | return 0; |
| 4146 | |
| 4147 | /* Search for a _BCL method, but don't execute it */ |
| 4148 | status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3, |
| 4149 | brightness_find_bcl, NULL, &found_node); |
| 4150 | |
| 4151 | return (ACPI_SUCCESS(status) && found_node != NULL); |
| 4152 | } |
| 4153 | |
| 4154 | static int __init brightness_init(struct ibm_init_struct *iibm) |
| 4155 | { |
| 4156 | int b; |
| 4157 | |
| 4158 | vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); |
| 4159 | |
| 4160 | mutex_init(&brightness_mutex); |
| 4161 | |
| 4162 | if (!brightness_enable) { |
| 4163 | dbg_printk(TPACPI_DBG_INIT, |
| 4164 | "brightness support disabled by " |
| 4165 | "module parameter\n"); |
| 4166 | return 1; |
| 4167 | } else if (brightness_enable > 1) { |
| 4168 | if (brightness_check_std_acpi_support()) { |
| 4169 | printk(TPACPI_NOTICE |
| 4170 | "standard ACPI backlight interface " |
| 4171 | "available, not loading native one...\n"); |
| 4172 | return 1; |
| 4173 | } |
| 4174 | } |
| 4175 | |
| 4176 | if (!brightness_mode) { |
| 4177 | if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) |
| 4178 | brightness_mode = 2; |
| 4179 | else |
| 4180 | brightness_mode = 3; |
| 4181 | |
| 4182 | dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n", |
| 4183 | brightness_mode); |
| 4184 | } |
| 4185 | |
| 4186 | if (brightness_mode > 3) |
| 4187 | return -EINVAL; |
| 4188 | |
| 4189 | tp_features.bright_16levels = |
| 4190 | thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO && |
| 4191 | brightness_check_levels(); |
| 4192 | |
| 4193 | b = brightness_get(NULL); |
| 4194 | if (b < 0) |
| 4195 | return 1; |
| 4196 | |
| 4197 | if (tp_features.bright_16levels) |
| 4198 | printk(TPACPI_INFO |
| 4199 | "detected a 16-level brightness capable ThinkPad\n"); |
| 4200 | |
| 4201 | ibm_backlight_device = backlight_device_register( |
| 4202 | TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL, |
| 4203 | &ibm_backlight_data); |
| 4204 | if (IS_ERR(ibm_backlight_device)) { |
| 4205 | printk(TPACPI_ERR "Could not register backlight device\n"); |
| 4206 | return PTR_ERR(ibm_backlight_device); |
| 4207 | } |
| 4208 | vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n"); |
| 4209 | |
| 4210 | ibm_backlight_device->props.max_brightness = |
| 4211 | (tp_features.bright_16levels)? 15 : 7; |
| 4212 | ibm_backlight_device->props.brightness = b; |
| 4213 | backlight_update_status(ibm_backlight_device); |
| 4214 | |
| 4215 | return 0; |
| 4216 | } |
| 4217 | |
| 4218 | static void brightness_exit(void) |
| 4219 | { |
| 4220 | if (ibm_backlight_device) { |
| 4221 | vdbg_printk(TPACPI_DBG_EXIT, |
| 4222 | "calling backlight_device_unregister()\n"); |
| 4223 | backlight_device_unregister(ibm_backlight_device); |
| 4224 | ibm_backlight_device = NULL; |
| 4225 | } |
| 4226 | } |
| 4227 | |
| 4228 | static int brightness_read(char *p) |
| 4229 | { |
| 4230 | int len = 0; |
| 4231 | int level; |
| 4232 | |
| 4233 | level = brightness_get(NULL); |
| 4234 | if (level < 0) { |
| 4235 | len += sprintf(p + len, "level:\t\tunreadable\n"); |
| 4236 | } else { |
| 4237 | len += sprintf(p + len, "level:\t\t%d\n", level); |
| 4238 | len += sprintf(p + len, "commands:\tup, down\n"); |
| 4239 | len += sprintf(p + len, "commands:\tlevel <level>" |
| 4240 | " (<level> is 0-%d)\n", |
| 4241 | (tp_features.bright_16levels) ? 15 : 7); |
| 4242 | } |
| 4243 | |
| 4244 | return len; |
| 4245 | } |
| 4246 | |
| 4247 | static int brightness_write(char *buf) |
| 4248 | { |
| 4249 | int level; |
| 4250 | int rc; |
| 4251 | char *cmd; |
| 4252 | int max_level = (tp_features.bright_16levels) ? 15 : 7; |
| 4253 | |
| 4254 | level = brightness_get(NULL); |
| 4255 | if (level < 0) |
| 4256 | return level; |
| 4257 | |
| 4258 | while ((cmd = next_cmd(&buf))) { |
| 4259 | if (strlencmp(cmd, "up") == 0) { |
| 4260 | if (level < max_level) |
| 4261 | level++; |
| 4262 | } else if (strlencmp(cmd, "down") == 0) { |
| 4263 | if (level > 0) |
| 4264 | level--; |
| 4265 | } else if (sscanf(cmd, "level %d", &level) == 1 && |
| 4266 | level >= 0 && level <= max_level) { |
| 4267 | /* new level set */ |
| 4268 | } else |
| 4269 | return -EINVAL; |
| 4270 | } |
| 4271 | |
| 4272 | /* |
| 4273 | * Now we know what the final level should be, so we try to set it. |
| 4274 | * Doing it this way makes the syscall restartable in case of EINTR |
| 4275 | */ |
| 4276 | rc = brightness_set(level); |
| 4277 | return (rc == -EINTR)? ERESTARTSYS : rc; |
| 4278 | } |
| 4279 | |
| 4280 | static struct ibm_struct brightness_driver_data = { |
| 4281 | .name = "brightness", |
| 4282 | .read = brightness_read, |
| 4283 | .write = brightness_write, |
| 4284 | .exit = brightness_exit, |
| 4285 | }; |
| 4286 | |
| 4287 | /************************************************************************* |
| 4288 | * Volume subdriver |
| 4289 | */ |
| 4290 | |
| 4291 | static int volume_offset = 0x30; |
| 4292 | |
| 4293 | static int volume_read(char *p) |
| 4294 | { |
| 4295 | int len = 0; |
| 4296 | u8 level; |
| 4297 | |
| 4298 | if (!acpi_ec_read(volume_offset, &level)) { |
| 4299 | len += sprintf(p + len, "level:\t\tunreadable\n"); |
| 4300 | } else { |
| 4301 | len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); |
| 4302 | len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); |
| 4303 | len += sprintf(p + len, "commands:\tup, down, mute\n"); |
| 4304 | len += sprintf(p + len, "commands:\tlevel <level>" |
| 4305 | " (<level> is 0-15)\n"); |
| 4306 | } |
| 4307 | |
| 4308 | return len; |
| 4309 | } |
| 4310 | |
| 4311 | static int volume_write(char *buf) |
| 4312 | { |
| 4313 | int cmos_cmd, inc, i; |
| 4314 | u8 level, mute; |
| 4315 | int new_level, new_mute; |
| 4316 | char *cmd; |
| 4317 | |
| 4318 | while ((cmd = next_cmd(&buf))) { |
| 4319 | if (!acpi_ec_read(volume_offset, &level)) |
| 4320 | return -EIO; |
| 4321 | new_mute = mute = level & 0x40; |
| 4322 | new_level = level = level & 0xf; |
| 4323 | |
| 4324 | if (strlencmp(cmd, "up") == 0) { |
| 4325 | if (mute) |
| 4326 | new_mute = 0; |
| 4327 | else |
| 4328 | new_level = level == 15 ? 15 : level + 1; |
| 4329 | } else if (strlencmp(cmd, "down") == 0) { |
| 4330 | if (mute) |
| 4331 | new_mute = 0; |
| 4332 | else |
| 4333 | new_level = level == 0 ? 0 : level - 1; |
| 4334 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && |
| 4335 | new_level >= 0 && new_level <= 15) { |
| 4336 | /* new_level set */ |
| 4337 | } else if (strlencmp(cmd, "mute") == 0) { |
| 4338 | new_mute = 0x40; |
| 4339 | } else |
| 4340 | return -EINVAL; |
| 4341 | |
| 4342 | if (new_level != level) { |
| 4343 | /* mute doesn't change */ |
| 4344 | |
| 4345 | cmos_cmd = (new_level > level) ? |
| 4346 | TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; |
| 4347 | inc = new_level > level ? 1 : -1; |
| 4348 | |
| 4349 | if (mute && (issue_thinkpad_cmos_command(cmos_cmd) || |
| 4350 | !acpi_ec_write(volume_offset, level))) |
| 4351 | return -EIO; |
| 4352 | |
| 4353 | for (i = level; i != new_level; i += inc) |
| 4354 | if (issue_thinkpad_cmos_command(cmos_cmd) || |
| 4355 | !acpi_ec_write(volume_offset, i + inc)) |
| 4356 | return -EIO; |
| 4357 | |
| 4358 | if (mute && |
| 4359 | (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) || |
| 4360 | !acpi_ec_write(volume_offset, new_level + mute))) { |
| 4361 | return -EIO; |
| 4362 | } |
| 4363 | } |
| 4364 | |
| 4365 | if (new_mute != mute) { |
| 4366 | /* level doesn't change */ |
| 4367 | |
| 4368 | cmos_cmd = (new_mute) ? |
| 4369 | TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; |
| 4370 | |
| 4371 | if (issue_thinkpad_cmos_command(cmos_cmd) || |
| 4372 | !acpi_ec_write(volume_offset, level + new_mute)) |
| 4373 | return -EIO; |
| 4374 | } |
| 4375 | } |
| 4376 | |
| 4377 | return 0; |
| 4378 | } |
| 4379 | |
| 4380 | static struct ibm_struct volume_driver_data = { |
| 4381 | .name = "volume", |
| 4382 | .read = volume_read, |
| 4383 | .write = volume_write, |
| 4384 | }; |
| 4385 | |
| 4386 | /************************************************************************* |
| 4387 | * Fan subdriver |
| 4388 | */ |
| 4389 | |
| 4390 | /* |
| 4391 | * FAN ACCESS MODES |
| 4392 | * |
| 4393 | * TPACPI_FAN_RD_ACPI_GFAN: |
| 4394 | * ACPI GFAN method: returns fan level |
| 4395 | * |
| 4396 | * see TPACPI_FAN_WR_ACPI_SFAN |
| 4397 | * EC 0x2f (HFSP) not available if GFAN exists |
| 4398 | * |
| 4399 | * TPACPI_FAN_WR_ACPI_SFAN: |
| 4400 | * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) |
| 4401 | * |
| 4402 | * EC 0x2f (HFSP) might be available *for reading*, but do not use |
| 4403 | * it for writing. |
| 4404 | * |
| 4405 | * TPACPI_FAN_WR_TPEC: |
| 4406 | * ThinkPad EC register 0x2f (HFSP): fan control loop mode |
| 4407 | * Supported on almost all ThinkPads |
| 4408 | * |
| 4409 | * Fan speed changes of any sort (including those caused by the |
| 4410 | * disengaged mode) are usually done slowly by the firmware as the |
| 4411 | * maximum ammount of fan duty cycle change per second seems to be |
| 4412 | * limited. |
| 4413 | * |
| 4414 | * Reading is not available if GFAN exists. |
| 4415 | * Writing is not available if SFAN exists. |
| 4416 | * |
| 4417 | * Bits |
| 4418 | * 7 automatic mode engaged; |
| 4419 | * (default operation mode of the ThinkPad) |
| 4420 | * fan level is ignored in this mode. |
| 4421 | * 6 full speed mode (takes precedence over bit 7); |
| 4422 | * not available on all thinkpads. May disable |
| 4423 | * the tachometer while the fan controller ramps up |
| 4424 | * the speed (which can take up to a few *minutes*). |
| 4425 | * Speeds up fan to 100% duty-cycle, which is far above |
| 4426 | * the standard RPM levels. It is not impossible that |
| 4427 | * it could cause hardware damage. |
| 4428 | * 5-3 unused in some models. Extra bits for fan level |
| 4429 | * in others, but still useless as all values above |
| 4430 | * 7 map to the same speed as level 7 in these models. |
| 4431 | * 2-0 fan level (0..7 usually) |
| 4432 | * 0x00 = stop |
| 4433 | * 0x07 = max (set when temperatures critical) |
| 4434 | * Some ThinkPads may have other levels, see |
| 4435 | * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) |
| 4436 | * |
| 4437 | * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at |
| 4438 | * boot. Apparently the EC does not intialize it, so unless ACPI DSDT |
| 4439 | * does so, its initial value is meaningless (0x07). |
| 4440 | * |
| 4441 | * For firmware bugs, refer to: |
| 4442 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues |
| 4443 | * |
| 4444 | * ---- |
| 4445 | * |
| 4446 | * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): |
| 4447 | * Main fan tachometer reading (in RPM) |
| 4448 | * |
| 4449 | * This register is present on all ThinkPads with a new-style EC, and |
| 4450 | * it is known not to be present on the A21m/e, and T22, as there is |
| 4451 | * something else in offset 0x84 according to the ACPI DSDT. Other |
| 4452 | * ThinkPads from this same time period (and earlier) probably lack the |
| 4453 | * tachometer as well. |
| 4454 | * |
| 4455 | * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare |
| 4456 | * was never fixed by IBM to report the EC firmware version string |
| 4457 | * probably support the tachometer (like the early X models), so |
| 4458 | * detecting it is quite hard. We need more data to know for sure. |
| 4459 | * |
| 4460 | * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings |
| 4461 | * might result. |
| 4462 | * |
| 4463 | * FIRMWARE BUG: may go stale while the EC is switching to full speed |
| 4464 | * mode. |
| 4465 | * |
| 4466 | * For firmware bugs, refer to: |
| 4467 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues |
| 4468 | * |
| 4469 | * TPACPI_FAN_WR_ACPI_FANS: |
| 4470 | * ThinkPad X31, X40, X41. Not available in the X60. |
| 4471 | * |
| 4472 | * FANS ACPI handle: takes three arguments: low speed, medium speed, |
| 4473 | * high speed. ACPI DSDT seems to map these three speeds to levels |
| 4474 | * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH |
| 4475 | * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") |
| 4476 | * |
| 4477 | * The speeds are stored on handles |
| 4478 | * (FANA:FAN9), (FANC:FANB), (FANE:FAND). |
| 4479 | * |
| 4480 | * There are three default speed sets, acessible as handles: |
| 4481 | * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H |
| 4482 | * |
| 4483 | * ACPI DSDT switches which set is in use depending on various |
| 4484 | * factors. |
| 4485 | * |
| 4486 | * TPACPI_FAN_WR_TPEC is also available and should be used to |
| 4487 | * command the fan. The X31/X40/X41 seems to have 8 fan levels, |
| 4488 | * but the ACPI tables just mention level 7. |
| 4489 | */ |
| 4490 | |
| 4491 | enum { /* Fan control constants */ |
| 4492 | fan_status_offset = 0x2f, /* EC register 0x2f */ |
| 4493 | fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) |
| 4494 | * 0x84 must be read before 0x85 */ |
| 4495 | |
| 4496 | TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ |
| 4497 | TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ |
| 4498 | |
| 4499 | TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ |
| 4500 | }; |
| 4501 | |
| 4502 | enum fan_status_access_mode { |
| 4503 | TPACPI_FAN_NONE = 0, /* No fan status or control */ |
| 4504 | TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ |
| 4505 | TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ |
| 4506 | }; |
| 4507 | |
| 4508 | enum fan_control_access_mode { |
| 4509 | TPACPI_FAN_WR_NONE = 0, /* No fan control */ |
| 4510 | TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ |
| 4511 | TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ |
| 4512 | TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ |
| 4513 | }; |
| 4514 | |
| 4515 | enum fan_control_commands { |
| 4516 | TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ |
| 4517 | TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ |
| 4518 | TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, |
| 4519 | * and also watchdog cmd */ |
| 4520 | }; |
| 4521 | |
| 4522 | static int fan_control_allowed; |
| 4523 | |
| 4524 | static enum fan_status_access_mode fan_status_access_mode; |
| 4525 | static enum fan_control_access_mode fan_control_access_mode; |
| 4526 | static enum fan_control_commands fan_control_commands; |
| 4527 | |
| 4528 | static u8 fan_control_initial_status; |
| 4529 | static u8 fan_control_desired_level; |
| 4530 | static int fan_watchdog_maxinterval; |
| 4531 | |
| 4532 | static struct mutex fan_mutex; |
| 4533 | |
| 4534 | static void fan_watchdog_fire(struct work_struct *ignored); |
| 4535 | static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); |
| 4536 | |
| 4537 | TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ |
| 4538 | TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ |
| 4539 | "\\FSPD", /* 600e/x, 770e, 770x */ |
| 4540 | ); /* all others */ |
| 4541 | TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ |
| 4542 | "JFNS", /* 770x-JL */ |
| 4543 | ); /* all others */ |
| 4544 | |
| 4545 | /* |
| 4546 | * Call with fan_mutex held |
| 4547 | */ |
| 4548 | static void fan_update_desired_level(u8 status) |
| 4549 | { |
| 4550 | if ((status & |
| 4551 | (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { |
| 4552 | if (status > 7) |
| 4553 | fan_control_desired_level = 7; |
| 4554 | else |
| 4555 | fan_control_desired_level = status; |
| 4556 | } |
| 4557 | } |
| 4558 | |
| 4559 | static int fan_get_status(u8 *status) |
| 4560 | { |
| 4561 | u8 s; |
| 4562 | |
| 4563 | /* TODO: |
| 4564 | * Add TPACPI_FAN_RD_ACPI_FANS ? */ |
| 4565 | |
| 4566 | switch (fan_status_access_mode) { |
| 4567 | case TPACPI_FAN_RD_ACPI_GFAN: |
| 4568 | /* 570, 600e/x, 770e, 770x */ |
| 4569 | |
| 4570 | if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) |
| 4571 | return -EIO; |
| 4572 | |
| 4573 | if (likely(status)) |
| 4574 | *status = s & 0x07; |
| 4575 | |
| 4576 | break; |
| 4577 | |
| 4578 | case TPACPI_FAN_RD_TPEC: |
| 4579 | /* all except 570, 600e/x, 770e, 770x */ |
| 4580 | if (unlikely(!acpi_ec_read(fan_status_offset, &s))) |
| 4581 | return -EIO; |
| 4582 | |
| 4583 | if (likely(status)) |
| 4584 | *status = s; |
| 4585 | |
| 4586 | break; |
| 4587 | |
| 4588 | default: |
| 4589 | return -ENXIO; |
| 4590 | } |
| 4591 | |
| 4592 | return 0; |
| 4593 | } |
| 4594 | |
| 4595 | static int fan_get_status_safe(u8 *status) |
| 4596 | { |
| 4597 | int rc; |
| 4598 | u8 s; |
| 4599 | |
| 4600 | if (mutex_lock_interruptible(&fan_mutex)) |
| 4601 | return -ERESTARTSYS; |
| 4602 | rc = fan_get_status(&s); |
| 4603 | if (!rc) |
| 4604 | fan_update_desired_level(s); |
| 4605 | mutex_unlock(&fan_mutex); |
| 4606 | |
| 4607 | if (status) |
| 4608 | *status = s; |
| 4609 | |
| 4610 | return rc; |
| 4611 | } |
| 4612 | |
| 4613 | static int fan_get_speed(unsigned int *speed) |
| 4614 | { |
| 4615 | u8 hi, lo; |
| 4616 | |
| 4617 | switch (fan_status_access_mode) { |
| 4618 | case TPACPI_FAN_RD_TPEC: |
| 4619 | /* all except 570, 600e/x, 770e, 770x */ |
| 4620 | if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || |
| 4621 | !acpi_ec_read(fan_rpm_offset + 1, &hi))) |
| 4622 | return -EIO; |
| 4623 | |
| 4624 | if (likely(speed)) |
| 4625 | *speed = (hi << 8) | lo; |
| 4626 | |
| 4627 | break; |
| 4628 | |
| 4629 | default: |
| 4630 | return -ENXIO; |
| 4631 | } |
| 4632 | |
| 4633 | return 0; |
| 4634 | } |
| 4635 | |
| 4636 | static int fan_set_level(int level) |
| 4637 | { |
| 4638 | if (!fan_control_allowed) |
| 4639 | return -EPERM; |
| 4640 | |
| 4641 | switch (fan_control_access_mode) { |
| 4642 | case TPACPI_FAN_WR_ACPI_SFAN: |
| 4643 | if (level >= 0 && level <= 7) { |
| 4644 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) |
| 4645 | return -EIO; |
| 4646 | } else |
| 4647 | return -EINVAL; |
| 4648 | break; |
| 4649 | |
| 4650 | case TPACPI_FAN_WR_ACPI_FANS: |
| 4651 | case TPACPI_FAN_WR_TPEC: |
| 4652 | if ((level != TP_EC_FAN_AUTO) && |
| 4653 | (level != TP_EC_FAN_FULLSPEED) && |
| 4654 | ((level < 0) || (level > 7))) |
| 4655 | return -EINVAL; |
| 4656 | |
| 4657 | /* safety net should the EC not support AUTO |
| 4658 | * or FULLSPEED mode bits and just ignore them */ |
| 4659 | if (level & TP_EC_FAN_FULLSPEED) |
| 4660 | level |= 7; /* safety min speed 7 */ |
| 4661 | else if (level & TP_EC_FAN_FULLSPEED) |
| 4662 | level |= 4; /* safety min speed 4 */ |
| 4663 | |
| 4664 | if (!acpi_ec_write(fan_status_offset, level)) |
| 4665 | return -EIO; |
| 4666 | else |
| 4667 | tp_features.fan_ctrl_status_undef = 0; |
| 4668 | break; |
| 4669 | |
| 4670 | default: |
| 4671 | return -ENXIO; |
| 4672 | } |
| 4673 | return 0; |
| 4674 | } |
| 4675 | |
| 4676 | static int fan_set_level_safe(int level) |
| 4677 | { |
| 4678 | int rc; |
| 4679 | |
| 4680 | if (!fan_control_allowed) |
| 4681 | return -EPERM; |
| 4682 | |
| 4683 | if (mutex_lock_interruptible(&fan_mutex)) |
| 4684 | return -ERESTARTSYS; |
| 4685 | |
| 4686 | if (level == TPACPI_FAN_LAST_LEVEL) |
| 4687 | level = fan_control_desired_level; |
| 4688 | |
| 4689 | rc = fan_set_level(level); |
| 4690 | if (!rc) |
| 4691 | fan_update_desired_level(level); |
| 4692 | |
| 4693 | mutex_unlock(&fan_mutex); |
| 4694 | return rc; |
| 4695 | } |
| 4696 | |
| 4697 | static int fan_set_enable(void) |
| 4698 | { |
| 4699 | u8 s; |
| 4700 | int rc; |
| 4701 | |
| 4702 | if (!fan_control_allowed) |
| 4703 | return -EPERM; |
| 4704 | |
| 4705 | if (mutex_lock_interruptible(&fan_mutex)) |
| 4706 | return -ERESTARTSYS; |
| 4707 | |
| 4708 | switch (fan_control_access_mode) { |
| 4709 | case TPACPI_FAN_WR_ACPI_FANS: |
| 4710 | case TPACPI_FAN_WR_TPEC: |
| 4711 | rc = fan_get_status(&s); |
| 4712 | if (rc < 0) |
| 4713 | break; |
| 4714 | |
| 4715 | /* Don't go out of emergency fan mode */ |
| 4716 | if (s != 7) { |
| 4717 | s &= 0x07; |
| 4718 | s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ |
| 4719 | } |
| 4720 | |
| 4721 | if (!acpi_ec_write(fan_status_offset, s)) |
| 4722 | rc = -EIO; |
| 4723 | else { |
| 4724 | tp_features.fan_ctrl_status_undef = 0; |
| 4725 | rc = 0; |
| 4726 | } |
| 4727 | break; |
| 4728 | |
| 4729 | case TPACPI_FAN_WR_ACPI_SFAN: |
| 4730 | rc = fan_get_status(&s); |
| 4731 | if (rc < 0) |
| 4732 | break; |
| 4733 | |
| 4734 | s &= 0x07; |
| 4735 | |
| 4736 | /* Set fan to at least level 4 */ |
| 4737 | s |= 4; |
| 4738 | |
| 4739 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) |
| 4740 | rc = -EIO; |
| 4741 | else |
| 4742 | rc = 0; |
| 4743 | break; |
| 4744 | |
| 4745 | default: |
| 4746 | rc = -ENXIO; |
| 4747 | } |
| 4748 | |
| 4749 | mutex_unlock(&fan_mutex); |
| 4750 | return rc; |
| 4751 | } |
| 4752 | |
| 4753 | static int fan_set_disable(void) |
| 4754 | { |
| 4755 | int rc; |
| 4756 | |
| 4757 | if (!fan_control_allowed) |
| 4758 | return -EPERM; |
| 4759 | |
| 4760 | if (mutex_lock_interruptible(&fan_mutex)) |
| 4761 | return -ERESTARTSYS; |
| 4762 | |
| 4763 | rc = 0; |
| 4764 | switch (fan_control_access_mode) { |
| 4765 | case TPACPI_FAN_WR_ACPI_FANS: |
| 4766 | case TPACPI_FAN_WR_TPEC: |
| 4767 | if (!acpi_ec_write(fan_status_offset, 0x00)) |
| 4768 | rc = -EIO; |
| 4769 | else { |
| 4770 | fan_control_desired_level = 0; |
| 4771 | tp_features.fan_ctrl_status_undef = 0; |
| 4772 | } |
| 4773 | break; |
| 4774 | |
| 4775 | case TPACPI_FAN_WR_ACPI_SFAN: |
| 4776 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) |
| 4777 | rc = -EIO; |
| 4778 | else |
| 4779 | fan_control_desired_level = 0; |
| 4780 | break; |
| 4781 | |
| 4782 | default: |
| 4783 | rc = -ENXIO; |
| 4784 | } |
| 4785 | |
| 4786 | |
| 4787 | mutex_unlock(&fan_mutex); |
| 4788 | return rc; |
| 4789 | } |
| 4790 | |
| 4791 | static int fan_set_speed(int speed) |
| 4792 | { |
| 4793 | int rc; |
| 4794 | |
| 4795 | if (!fan_control_allowed) |
| 4796 | return -EPERM; |
| 4797 | |
| 4798 | if (mutex_lock_interruptible(&fan_mutex)) |
| 4799 | return -ERESTARTSYS; |
| 4800 | |
| 4801 | rc = 0; |
| 4802 | switch (fan_control_access_mode) { |
| 4803 | case TPACPI_FAN_WR_ACPI_FANS: |
| 4804 | if (speed >= 0 && speed <= 65535) { |
| 4805 | if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", |
| 4806 | speed, speed, speed)) |
| 4807 | rc = -EIO; |
| 4808 | } else |
| 4809 | rc = -EINVAL; |
| 4810 | break; |
| 4811 | |
| 4812 | default: |
| 4813 | rc = -ENXIO; |
| 4814 | } |
| 4815 | |
| 4816 | mutex_unlock(&fan_mutex); |
| 4817 | return rc; |
| 4818 | } |
| 4819 | |
| 4820 | static void fan_watchdog_reset(void) |
| 4821 | { |
| 4822 | static int fan_watchdog_active; |
| 4823 | |
| 4824 | if (fan_control_access_mode == TPACPI_FAN_WR_NONE) |
| 4825 | return; |
| 4826 | |
| 4827 | if (fan_watchdog_active) |
| 4828 | cancel_delayed_work(&fan_watchdog_task); |
| 4829 | |
| 4830 | if (fan_watchdog_maxinterval > 0 && |
| 4831 | tpacpi_lifecycle != TPACPI_LIFE_EXITING) { |
| 4832 | fan_watchdog_active = 1; |
| 4833 | if (!schedule_delayed_work(&fan_watchdog_task, |
| 4834 | msecs_to_jiffies(fan_watchdog_maxinterval |
| 4835 | * 1000))) { |
| 4836 | printk(TPACPI_ERR |
| 4837 | "failed to schedule the fan watchdog, " |
| 4838 | "watchdog will not trigger\n"); |
| 4839 | } |
| 4840 | } else |
| 4841 | fan_watchdog_active = 0; |
| 4842 | } |
| 4843 | |
| 4844 | static void fan_watchdog_fire(struct work_struct *ignored) |
| 4845 | { |
| 4846 | int rc; |
| 4847 | |
| 4848 | if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) |
| 4849 | return; |
| 4850 | |
| 4851 | printk(TPACPI_NOTICE "fan watchdog: enabling fan\n"); |
| 4852 | rc = fan_set_enable(); |
| 4853 | if (rc < 0) { |
| 4854 | printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, " |
| 4855 | "will try again later...\n", -rc); |
| 4856 | /* reschedule for later */ |
| 4857 | fan_watchdog_reset(); |
| 4858 | } |
| 4859 | } |
| 4860 | |
| 4861 | /* |
| 4862 | * SYSFS fan layout: hwmon compatible (device) |
| 4863 | * |
| 4864 | * pwm*_enable: |
| 4865 | * 0: "disengaged" mode |
| 4866 | * 1: manual mode |
| 4867 | * 2: native EC "auto" mode (recommended, hardware default) |
| 4868 | * |
| 4869 | * pwm*: set speed in manual mode, ignored otherwise. |
| 4870 | * 0 is level 0; 255 is level 7. Intermediate points done with linear |
| 4871 | * interpolation. |
| 4872 | * |
| 4873 | * fan*_input: tachometer reading, RPM |
| 4874 | * |
| 4875 | * |
| 4876 | * SYSFS fan layout: extensions |
| 4877 | * |
| 4878 | * fan_watchdog (driver): |
| 4879 | * fan watchdog interval in seconds, 0 disables (default), max 120 |
| 4880 | */ |
| 4881 | |
| 4882 | /* sysfs fan pwm1_enable ----------------------------------------------- */ |
| 4883 | static ssize_t fan_pwm1_enable_show(struct device *dev, |
| 4884 | struct device_attribute *attr, |
| 4885 | char *buf) |
| 4886 | { |
| 4887 | int res, mode; |
| 4888 | u8 status; |
| 4889 | |
| 4890 | res = fan_get_status_safe(&status); |
| 4891 | if (res) |
| 4892 | return res; |
| 4893 | |
| 4894 | if (unlikely(tp_features.fan_ctrl_status_undef)) { |
| 4895 | if (status != fan_control_initial_status) { |
| 4896 | tp_features.fan_ctrl_status_undef = 0; |
| 4897 | } else { |
| 4898 | /* Return most likely status. In fact, it |
| 4899 | * might be the only possible status */ |
| 4900 | status = TP_EC_FAN_AUTO; |
| 4901 | } |
| 4902 | } |
| 4903 | |
| 4904 | if (status & TP_EC_FAN_FULLSPEED) { |
| 4905 | mode = 0; |
| 4906 | } else if (status & TP_EC_FAN_AUTO) { |
| 4907 | mode = 2; |
| 4908 | } else |
| 4909 | mode = 1; |
| 4910 | |
| 4911 | return snprintf(buf, PAGE_SIZE, "%d\n", mode); |
| 4912 | } |
| 4913 | |
| 4914 | static ssize_t fan_pwm1_enable_store(struct device *dev, |
| 4915 | struct device_attribute *attr, |
| 4916 | const char *buf, size_t count) |
| 4917 | { |
| 4918 | unsigned long t; |
| 4919 | int res, level; |
| 4920 | |
| 4921 | if (parse_strtoul(buf, 2, &t)) |
| 4922 | return -EINVAL; |
| 4923 | |
| 4924 | switch (t) { |
| 4925 | case 0: |
| 4926 | level = TP_EC_FAN_FULLSPEED; |
| 4927 | break; |
| 4928 | case 1: |
| 4929 | level = TPACPI_FAN_LAST_LEVEL; |
| 4930 | break; |
| 4931 | case 2: |
| 4932 | level = TP_EC_FAN_AUTO; |
| 4933 | break; |
| 4934 | case 3: |
| 4935 | /* reserved for software-controlled auto mode */ |
| 4936 | return -ENOSYS; |
| 4937 | default: |
| 4938 | return -EINVAL; |
| 4939 | } |
| 4940 | |
| 4941 | res = fan_set_level_safe(level); |
| 4942 | if (res == -ENXIO) |
| 4943 | return -EINVAL; |
| 4944 | else if (res < 0) |
| 4945 | return res; |
| 4946 | |
| 4947 | fan_watchdog_reset(); |
| 4948 | |
| 4949 | return count; |
| 4950 | } |
| 4951 | |
| 4952 | static struct device_attribute dev_attr_fan_pwm1_enable = |
| 4953 | __ATTR(pwm1_enable, S_IWUSR | S_IRUGO, |
| 4954 | fan_pwm1_enable_show, fan_pwm1_enable_store); |
| 4955 | |
| 4956 | /* sysfs fan pwm1 ------------------------------------------------------ */ |
| 4957 | static ssize_t fan_pwm1_show(struct device *dev, |
| 4958 | struct device_attribute *attr, |
| 4959 | char *buf) |
| 4960 | { |
| 4961 | int res; |
| 4962 | u8 status; |
| 4963 | |
| 4964 | res = fan_get_status_safe(&status); |
| 4965 | if (res) |
| 4966 | return res; |
| 4967 | |
| 4968 | if (unlikely(tp_features.fan_ctrl_status_undef)) { |
| 4969 | if (status != fan_control_initial_status) { |
| 4970 | tp_features.fan_ctrl_status_undef = 0; |
| 4971 | } else { |
| 4972 | status = TP_EC_FAN_AUTO; |
| 4973 | } |
| 4974 | } |
| 4975 | |
| 4976 | if ((status & |
| 4977 | (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) |
| 4978 | status = fan_control_desired_level; |
| 4979 | |
| 4980 | if (status > 7) |
| 4981 | status = 7; |
| 4982 | |
| 4983 | return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); |
| 4984 | } |
| 4985 | |
| 4986 | static ssize_t fan_pwm1_store(struct device *dev, |
| 4987 | struct device_attribute *attr, |
| 4988 | const char *buf, size_t count) |
| 4989 | { |
| 4990 | unsigned long s; |
| 4991 | int rc; |
| 4992 | u8 status, newlevel; |
| 4993 | |
| 4994 | if (parse_strtoul(buf, 255, &s)) |
| 4995 | return -EINVAL; |
| 4996 | |
| 4997 | /* scale down from 0-255 to 0-7 */ |
| 4998 | newlevel = (s >> 5) & 0x07; |
| 4999 | |
| 5000 | if (mutex_lock_interruptible(&fan_mutex)) |
| 5001 | return -ERESTARTSYS; |
| 5002 | |
| 5003 | rc = fan_get_status(&status); |
| 5004 | if (!rc && (status & |
| 5005 | (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { |
| 5006 | rc = fan_set_level(newlevel); |
| 5007 | if (rc == -ENXIO) |
| 5008 | rc = -EINVAL; |
| 5009 | else if (!rc) { |
| 5010 | fan_update_desired_level(newlevel); |
| 5011 | fan_watchdog_reset(); |
| 5012 | } |
| 5013 | } |
| 5014 | |
| 5015 | mutex_unlock(&fan_mutex); |
| 5016 | return (rc)? rc : count; |
| 5017 | } |
| 5018 | |
| 5019 | static struct device_attribute dev_attr_fan_pwm1 = |
| 5020 | __ATTR(pwm1, S_IWUSR | S_IRUGO, |
| 5021 | fan_pwm1_show, fan_pwm1_store); |
| 5022 | |
| 5023 | /* sysfs fan fan1_input ------------------------------------------------ */ |
| 5024 | static ssize_t fan_fan1_input_show(struct device *dev, |
| 5025 | struct device_attribute *attr, |
| 5026 | char *buf) |
| 5027 | { |
| 5028 | int res; |
| 5029 | unsigned int speed; |
| 5030 | |
| 5031 | res = fan_get_speed(&speed); |
| 5032 | if (res < 0) |
| 5033 | return res; |
| 5034 | |
| 5035 | return snprintf(buf, PAGE_SIZE, "%u\n", speed); |
| 5036 | } |
| 5037 | |
| 5038 | static struct device_attribute dev_attr_fan_fan1_input = |
| 5039 | __ATTR(fan1_input, S_IRUGO, |
| 5040 | fan_fan1_input_show, NULL); |
| 5041 | |
| 5042 | /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ |
| 5043 | static ssize_t fan_fan_watchdog_show(struct device_driver *drv, |
| 5044 | char *buf) |
| 5045 | { |
| 5046 | return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); |
| 5047 | } |
| 5048 | |
| 5049 | static ssize_t fan_fan_watchdog_store(struct device_driver *drv, |
| 5050 | const char *buf, size_t count) |
| 5051 | { |
| 5052 | unsigned long t; |
| 5053 | |
| 5054 | if (parse_strtoul(buf, 120, &t)) |
| 5055 | return -EINVAL; |
| 5056 | |
| 5057 | if (!fan_control_allowed) |
| 5058 | return -EPERM; |
| 5059 | |
| 5060 | fan_watchdog_maxinterval = t; |
| 5061 | fan_watchdog_reset(); |
| 5062 | |
| 5063 | return count; |
| 5064 | } |
| 5065 | |
| 5066 | static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, |
| 5067 | fan_fan_watchdog_show, fan_fan_watchdog_store); |
| 5068 | |
| 5069 | /* --------------------------------------------------------------------- */ |
| 5070 | static struct attribute *fan_attributes[] = { |
| 5071 | &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr, |
| 5072 | &dev_attr_fan_fan1_input.attr, |
| 5073 | NULL |
| 5074 | }; |
| 5075 | |
| 5076 | static const struct attribute_group fan_attr_group = { |
| 5077 | .attrs = fan_attributes, |
| 5078 | }; |
| 5079 | |
| 5080 | static int __init fan_init(struct ibm_init_struct *iibm) |
| 5081 | { |
| 5082 | int rc; |
| 5083 | |
| 5084 | vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n"); |
| 5085 | |
| 5086 | mutex_init(&fan_mutex); |
| 5087 | fan_status_access_mode = TPACPI_FAN_NONE; |
| 5088 | fan_control_access_mode = TPACPI_FAN_WR_NONE; |
| 5089 | fan_control_commands = 0; |
| 5090 | fan_watchdog_maxinterval = 0; |
| 5091 | tp_features.fan_ctrl_status_undef = 0; |
| 5092 | fan_control_desired_level = 7; |
| 5093 | |
| 5094 | TPACPI_ACPIHANDLE_INIT(fans); |
| 5095 | TPACPI_ACPIHANDLE_INIT(gfan); |
| 5096 | TPACPI_ACPIHANDLE_INIT(sfan); |
| 5097 | |
| 5098 | if (gfan_handle) { |
| 5099 | /* 570, 600e/x, 770e, 770x */ |
| 5100 | fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; |
| 5101 | } else { |
| 5102 | /* all other ThinkPads: note that even old-style |
| 5103 | * ThinkPad ECs supports the fan control register */ |
| 5104 | if (likely(acpi_ec_read(fan_status_offset, |
| 5105 | &fan_control_initial_status))) { |
| 5106 | fan_status_access_mode = TPACPI_FAN_RD_TPEC; |
| 5107 | |
| 5108 | /* In some ThinkPads, neither the EC nor the ACPI |
| 5109 | * DSDT initialize the fan status, and it ends up |
| 5110 | * being set to 0x07 when it *could* be either |
| 5111 | * 0x07 or 0x80. |
| 5112 | * |
| 5113 | * Enable for TP-1Y (T43), TP-78 (R51e), |
| 5114 | * TP-76 (R52), TP-70 (T43, R52), which are known |
| 5115 | * to be buggy. */ |
| 5116 | if (fan_control_initial_status == 0x07) { |
| 5117 | switch (thinkpad_id.ec_model) { |
| 5118 | case 0x5931: /* TP-1Y */ |
| 5119 | case 0x3837: /* TP-78 */ |
| 5120 | case 0x3637: /* TP-76 */ |
| 5121 | case 0x3037: /* TP-70 */ |
| 5122 | printk(TPACPI_NOTICE |
| 5123 | "fan_init: initial fan status " |
| 5124 | "is unknown, assuming it is " |
| 5125 | "in auto mode\n"); |
| 5126 | tp_features.fan_ctrl_status_undef = 1; |
| 5127 | ;; |
| 5128 | } |
| 5129 | } |
| 5130 | } else { |
| 5131 | printk(TPACPI_ERR |
| 5132 | "ThinkPad ACPI EC access misbehaving, " |
| 5133 | "fan status and control unavailable\n"); |
| 5134 | return 1; |
| 5135 | } |
| 5136 | } |
| 5137 | |
| 5138 | if (sfan_handle) { |
| 5139 | /* 570, 770x-JL */ |
| 5140 | fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; |
| 5141 | fan_control_commands |= |
| 5142 | TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; |
| 5143 | } else { |
| 5144 | if (!gfan_handle) { |
| 5145 | /* gfan without sfan means no fan control */ |
| 5146 | /* all other models implement TP EC 0x2f control */ |
| 5147 | |
| 5148 | if (fans_handle) { |
| 5149 | /* X31, X40, X41 */ |
| 5150 | fan_control_access_mode = |
| 5151 | TPACPI_FAN_WR_ACPI_FANS; |
| 5152 | fan_control_commands |= |
| 5153 | TPACPI_FAN_CMD_SPEED | |
| 5154 | TPACPI_FAN_CMD_LEVEL | |
| 5155 | TPACPI_FAN_CMD_ENABLE; |
| 5156 | } else { |
| 5157 | fan_control_access_mode = TPACPI_FAN_WR_TPEC; |
| 5158 | fan_control_commands |= |
| 5159 | TPACPI_FAN_CMD_LEVEL | |
| 5160 | TPACPI_FAN_CMD_ENABLE; |
| 5161 | } |
| 5162 | } |
| 5163 | } |
| 5164 | |
| 5165 | vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n", |
| 5166 | str_supported(fan_status_access_mode != TPACPI_FAN_NONE || |
| 5167 | fan_control_access_mode != TPACPI_FAN_WR_NONE), |
| 5168 | fan_status_access_mode, fan_control_access_mode); |
| 5169 | |
| 5170 | /* fan control master switch */ |
| 5171 | if (!fan_control_allowed) { |
| 5172 | fan_control_access_mode = TPACPI_FAN_WR_NONE; |
| 5173 | fan_control_commands = 0; |
| 5174 | dbg_printk(TPACPI_DBG_INIT, |
| 5175 | "fan control features disabled by parameter\n"); |
| 5176 | } |
| 5177 | |
| 5178 | /* update fan_control_desired_level */ |
| 5179 | if (fan_status_access_mode != TPACPI_FAN_NONE) |
| 5180 | fan_get_status_safe(NULL); |
| 5181 | |
| 5182 | if (fan_status_access_mode != TPACPI_FAN_NONE || |
| 5183 | fan_control_access_mode != TPACPI_FAN_WR_NONE) { |
| 5184 | rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, |
| 5185 | &fan_attr_group); |
| 5186 | if (!(rc < 0)) |
| 5187 | rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, |
| 5188 | &driver_attr_fan_watchdog); |
| 5189 | if (rc < 0) |
| 5190 | return rc; |
| 5191 | return 0; |
| 5192 | } else |
| 5193 | return 1; |
| 5194 | } |
| 5195 | |
| 5196 | static void fan_exit(void) |
| 5197 | { |
| 5198 | vdbg_printk(TPACPI_DBG_EXIT, |
| 5199 | "cancelling any pending fan watchdog tasks\n"); |
| 5200 | |
| 5201 | /* FIXME: can we really do this unconditionally? */ |
| 5202 | sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); |
| 5203 | driver_remove_file(&tpacpi_hwmon_pdriver.driver, |
| 5204 | &driver_attr_fan_watchdog); |
| 5205 | |
| 5206 | cancel_delayed_work(&fan_watchdog_task); |
| 5207 | flush_scheduled_work(); |
| 5208 | } |
| 5209 | |
| 5210 | static int fan_read(char *p) |
| 5211 | { |
| 5212 | int len = 0; |
| 5213 | int rc; |
| 5214 | u8 status; |
| 5215 | unsigned int speed = 0; |
| 5216 | |
| 5217 | switch (fan_status_access_mode) { |
| 5218 | case TPACPI_FAN_RD_ACPI_GFAN: |
| 5219 | /* 570, 600e/x, 770e, 770x */ |
| 5220 | rc = fan_get_status_safe(&status); |
| 5221 | if (rc < 0) |
| 5222 | return rc; |
| 5223 | |
| 5224 | len += sprintf(p + len, "status:\t\t%s\n" |
| 5225 | "level:\t\t%d\n", |
| 5226 | (status != 0) ? "enabled" : "disabled", status); |
| 5227 | break; |
| 5228 | |
| 5229 | case TPACPI_FAN_RD_TPEC: |
| 5230 | /* all except 570, 600e/x, 770e, 770x */ |
| 5231 | rc = fan_get_status_safe(&status); |
| 5232 | if (rc < 0) |
| 5233 | return rc; |
| 5234 | |
| 5235 | if (unlikely(tp_features.fan_ctrl_status_undef)) { |
| 5236 | if (status != fan_control_initial_status) |
| 5237 | tp_features.fan_ctrl_status_undef = 0; |
| 5238 | else |
| 5239 | /* Return most likely status. In fact, it |
| 5240 | * might be the only possible status */ |
| 5241 | status = TP_EC_FAN_AUTO; |
| 5242 | } |
| 5243 | |
| 5244 | len += sprintf(p + len, "status:\t\t%s\n", |
| 5245 | (status != 0) ? "enabled" : "disabled"); |
| 5246 | |
| 5247 | rc = fan_get_speed(&speed); |
| 5248 | if (rc < 0) |
| 5249 | return rc; |
| 5250 | |
| 5251 | len += sprintf(p + len, "speed:\t\t%d\n", speed); |
| 5252 | |
| 5253 | if (status & TP_EC_FAN_FULLSPEED) |
| 5254 | /* Disengaged mode takes precedence */ |
| 5255 | len += sprintf(p + len, "level:\t\tdisengaged\n"); |
| 5256 | else if (status & TP_EC_FAN_AUTO) |
| 5257 | len += sprintf(p + len, "level:\t\tauto\n"); |
| 5258 | else |
| 5259 | len += sprintf(p + len, "level:\t\t%d\n", status); |
| 5260 | break; |
| 5261 | |
| 5262 | case TPACPI_FAN_NONE: |
| 5263 | default: |
| 5264 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
| 5265 | } |
| 5266 | |
| 5267 | if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { |
| 5268 | len += sprintf(p + len, "commands:\tlevel <level>"); |
| 5269 | |
| 5270 | switch (fan_control_access_mode) { |
| 5271 | case TPACPI_FAN_WR_ACPI_SFAN: |
| 5272 | len += sprintf(p + len, " (<level> is 0-7)\n"); |
| 5273 | break; |
| 5274 | |
| 5275 | default: |
| 5276 | len += sprintf(p + len, " (<level> is 0-7, " |
| 5277 | "auto, disengaged, full-speed)\n"); |
| 5278 | break; |
| 5279 | } |
| 5280 | } |
| 5281 | |
| 5282 | if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) |
| 5283 | len += sprintf(p + len, "commands:\tenable, disable\n" |
| 5284 | "commands:\twatchdog <timeout> (<timeout> " |
| 5285 | "is 0 (off), 1-120 (seconds))\n"); |
| 5286 | |
| 5287 | if (fan_control_commands & TPACPI_FAN_CMD_SPEED) |
| 5288 | len += sprintf(p + len, "commands:\tspeed <speed>" |
| 5289 | " (<speed> is 0-65535)\n"); |
| 5290 | |
| 5291 | return len; |
| 5292 | } |
| 5293 | |
| 5294 | static int fan_write_cmd_level(const char *cmd, int *rc) |
| 5295 | { |
| 5296 | int level; |
| 5297 | |
| 5298 | if (strlencmp(cmd, "level auto") == 0) |
| 5299 | level = TP_EC_FAN_AUTO; |
| 5300 | else if ((strlencmp(cmd, "level disengaged") == 0) | |
| 5301 | (strlencmp(cmd, "level full-speed") == 0)) |
| 5302 | level = TP_EC_FAN_FULLSPEED; |
| 5303 | else if (sscanf(cmd, "level %d", &level) != 1) |
| 5304 | return 0; |
| 5305 | |
| 5306 | *rc = fan_set_level_safe(level); |
| 5307 | if (*rc == -ENXIO) |
| 5308 | printk(TPACPI_ERR "level command accepted for unsupported " |
| 5309 | "access mode %d", fan_control_access_mode); |
| 5310 | |
| 5311 | return 1; |
| 5312 | } |
| 5313 | |
| 5314 | static int fan_write_cmd_enable(const char *cmd, int *rc) |
| 5315 | { |
| 5316 | if (strlencmp(cmd, "enable") != 0) |
| 5317 | return 0; |
| 5318 | |
| 5319 | *rc = fan_set_enable(); |
| 5320 | if (*rc == -ENXIO) |
| 5321 | printk(TPACPI_ERR "enable command accepted for unsupported " |
| 5322 | "access mode %d", fan_control_access_mode); |
| 5323 | |
| 5324 | return 1; |
| 5325 | } |
| 5326 | |
| 5327 | static int fan_write_cmd_disable(const char *cmd, int *rc) |
| 5328 | { |
| 5329 | if (strlencmp(cmd, "disable") != 0) |
| 5330 | return 0; |
| 5331 | |
| 5332 | *rc = fan_set_disable(); |
| 5333 | if (*rc == -ENXIO) |
| 5334 | printk(TPACPI_ERR "disable command accepted for unsupported " |
| 5335 | "access mode %d", fan_control_access_mode); |
| 5336 | |
| 5337 | return 1; |
| 5338 | } |
| 5339 | |
| 5340 | static int fan_write_cmd_speed(const char *cmd, int *rc) |
| 5341 | { |
| 5342 | int speed; |
| 5343 | |
| 5344 | /* TODO: |
| 5345 | * Support speed <low> <medium> <high> ? */ |
| 5346 | |
| 5347 | if (sscanf(cmd, "speed %d", &speed) != 1) |
| 5348 | return 0; |
| 5349 | |
| 5350 | *rc = fan_set_speed(speed); |
| 5351 | if (*rc == -ENXIO) |
| 5352 | printk(TPACPI_ERR "speed command accepted for unsupported " |
| 5353 | "access mode %d", fan_control_access_mode); |
| 5354 | |
| 5355 | return 1; |
| 5356 | } |
| 5357 | |
| 5358 | static int fan_write_cmd_watchdog(const char *cmd, int *rc) |
| 5359 | { |
| 5360 | int interval; |
| 5361 | |
| 5362 | if (sscanf(cmd, "watchdog %d", &interval) != 1) |
| 5363 | return 0; |
| 5364 | |
| 5365 | if (interval < 0 || interval > 120) |
| 5366 | *rc = -EINVAL; |
| 5367 | else |
| 5368 | fan_watchdog_maxinterval = interval; |
| 5369 | |
| 5370 | return 1; |
| 5371 | } |
| 5372 | |
| 5373 | static int fan_write(char *buf) |
| 5374 | { |
| 5375 | char *cmd; |
| 5376 | int rc = 0; |
| 5377 | |
| 5378 | while (!rc && (cmd = next_cmd(&buf))) { |
| 5379 | if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && |
| 5380 | fan_write_cmd_level(cmd, &rc)) && |
| 5381 | !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && |
| 5382 | (fan_write_cmd_enable(cmd, &rc) || |
| 5383 | fan_write_cmd_disable(cmd, &rc) || |
| 5384 | fan_write_cmd_watchdog(cmd, &rc))) && |
| 5385 | !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && |
| 5386 | fan_write_cmd_speed(cmd, &rc)) |
| 5387 | ) |
| 5388 | rc = -EINVAL; |
| 5389 | else if (!rc) |
| 5390 | fan_watchdog_reset(); |
| 5391 | } |
| 5392 | |
| 5393 | return rc; |
| 5394 | } |
| 5395 | |
| 5396 | static struct ibm_struct fan_driver_data = { |
| 5397 | .name = "fan", |
| 5398 | .read = fan_read, |
| 5399 | .write = fan_write, |
| 5400 | .exit = fan_exit, |
| 5401 | }; |
| 5402 | |
| 5403 | /**************************************************************************** |
| 5404 | **************************************************************************** |
| 5405 | * |
| 5406 | * Infrastructure |
| 5407 | * |
| 5408 | **************************************************************************** |
| 5409 | ****************************************************************************/ |
| 5410 | |
| 5411 | /* sysfs name ---------------------------------------------------------- */ |
| 5412 | static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, |
| 5413 | struct device_attribute *attr, |
| 5414 | char *buf) |
| 5415 | { |
| 5416 | return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); |
| 5417 | } |
| 5418 | |
| 5419 | static struct device_attribute dev_attr_thinkpad_acpi_pdev_name = |
| 5420 | __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); |
| 5421 | |
| 5422 | /* --------------------------------------------------------------------- */ |
| 5423 | |
| 5424 | /* /proc support */ |
| 5425 | static struct proc_dir_entry *proc_dir; |
| 5426 | |
| 5427 | /* |
| 5428 | * Module and infrastructure proble, init and exit handling |
| 5429 | */ |
| 5430 | |
| 5431 | static int force_load; |
| 5432 | |
| 5433 | #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
| 5434 | static const char * __init str_supported(int is_supported) |
| 5435 | { |
| 5436 | static char text_unsupported[] __initdata = "not supported"; |
| 5437 | |
| 5438 | return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; |
| 5439 | } |
| 5440 | #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ |
| 5441 | |
| 5442 | static void ibm_exit(struct ibm_struct *ibm) |
| 5443 | { |
| 5444 | dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); |
| 5445 | |
| 5446 | list_del_init(&ibm->all_drivers); |
| 5447 | |
| 5448 | if (ibm->flags.acpi_notify_installed) { |
| 5449 | dbg_printk(TPACPI_DBG_EXIT, |
| 5450 | "%s: acpi_remove_notify_handler\n", ibm->name); |
| 5451 | BUG_ON(!ibm->acpi); |
| 5452 | acpi_remove_notify_handler(*ibm->acpi->handle, |
| 5453 | ibm->acpi->type, |
| 5454 | dispatch_acpi_notify); |
| 5455 | ibm->flags.acpi_notify_installed = 0; |
| 5456 | ibm->flags.acpi_notify_installed = 0; |
| 5457 | } |
| 5458 | |
| 5459 | if (ibm->flags.proc_created) { |
| 5460 | dbg_printk(TPACPI_DBG_EXIT, |
| 5461 | "%s: remove_proc_entry\n", ibm->name); |
| 5462 | remove_proc_entry(ibm->name, proc_dir); |
| 5463 | ibm->flags.proc_created = 0; |
| 5464 | } |
| 5465 | |
| 5466 | if (ibm->flags.acpi_driver_registered) { |
| 5467 | dbg_printk(TPACPI_DBG_EXIT, |
| 5468 | "%s: acpi_bus_unregister_driver\n", ibm->name); |
| 5469 | BUG_ON(!ibm->acpi); |
| 5470 | acpi_bus_unregister_driver(ibm->acpi->driver); |
| 5471 | kfree(ibm->acpi->driver); |
| 5472 | ibm->acpi->driver = NULL; |
| 5473 | ibm->flags.acpi_driver_registered = 0; |
| 5474 | } |
| 5475 | |
| 5476 | if (ibm->flags.init_called && ibm->exit) { |
| 5477 | ibm->exit(); |
| 5478 | ibm->flags.init_called = 0; |
| 5479 | } |
| 5480 | |
| 5481 | dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); |
| 5482 | } |
| 5483 | |
| 5484 | static int __init ibm_init(struct ibm_init_struct *iibm) |
| 5485 | { |
| 5486 | int ret; |
| 5487 | struct ibm_struct *ibm = iibm->data; |
| 5488 | struct proc_dir_entry *entry; |
| 5489 | |
| 5490 | BUG_ON(ibm == NULL); |
| 5491 | |
| 5492 | INIT_LIST_HEAD(&ibm->all_drivers); |
| 5493 | |
| 5494 | if (ibm->flags.experimental && !experimental) |
| 5495 | return 0; |
| 5496 | |
| 5497 | dbg_printk(TPACPI_DBG_INIT, |
| 5498 | "probing for %s\n", ibm->name); |
| 5499 | |
| 5500 | if (iibm->init) { |
| 5501 | ret = iibm->init(iibm); |
| 5502 | if (ret > 0) |
| 5503 | return 0; /* probe failed */ |
| 5504 | if (ret) |
| 5505 | return ret; |
| 5506 | |
| 5507 | ibm->flags.init_called = 1; |
| 5508 | } |
| 5509 | |
| 5510 | if (ibm->acpi) { |
| 5511 | if (ibm->acpi->hid) { |
| 5512 | ret = register_tpacpi_subdriver(ibm); |
| 5513 | if (ret) |
| 5514 | goto err_out; |
| 5515 | } |
| 5516 | |
| 5517 | if (ibm->acpi->notify) { |
| 5518 | ret = setup_acpi_notify(ibm); |
| 5519 | if (ret == -ENODEV) { |
| 5520 | printk(TPACPI_NOTICE "disabling subdriver %s\n", |
| 5521 | ibm->name); |
| 5522 | ret = 0; |
| 5523 | goto err_out; |
| 5524 | } |
| 5525 | if (ret < 0) |
| 5526 | goto err_out; |
| 5527 | } |
| 5528 | } |
| 5529 | |
| 5530 | dbg_printk(TPACPI_DBG_INIT, |
| 5531 | "%s installed\n", ibm->name); |
| 5532 | |
| 5533 | if (ibm->read) { |
| 5534 | entry = create_proc_entry(ibm->name, |
| 5535 | S_IFREG | S_IRUGO | S_IWUSR, |
| 5536 | proc_dir); |
| 5537 | if (!entry) { |
| 5538 | printk(TPACPI_ERR "unable to create proc entry %s\n", |
| 5539 | ibm->name); |
| 5540 | ret = -ENODEV; |
| 5541 | goto err_out; |
| 5542 | } |
| 5543 | entry->owner = THIS_MODULE; |
| 5544 | entry->data = ibm; |
| 5545 | entry->read_proc = &dispatch_procfs_read; |
| 5546 | if (ibm->write) |
| 5547 | entry->write_proc = &dispatch_procfs_write; |
| 5548 | ibm->flags.proc_created = 1; |
| 5549 | } |
| 5550 | |
| 5551 | list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); |
| 5552 | |
| 5553 | return 0; |
| 5554 | |
| 5555 | err_out: |
| 5556 | dbg_printk(TPACPI_DBG_INIT, |
| 5557 | "%s: at error exit path with result %d\n", |
| 5558 | ibm->name, ret); |
| 5559 | |
| 5560 | ibm_exit(ibm); |
| 5561 | return (ret < 0)? ret : 0; |
| 5562 | } |
| 5563 | |
| 5564 | /* Probing */ |
| 5565 | |
| 5566 | static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp) |
| 5567 | { |
| 5568 | const struct dmi_device *dev = NULL; |
| 5569 | char ec_fw_string[18]; |
| 5570 | |
| 5571 | if (!tp) |
| 5572 | return; |
| 5573 | |
| 5574 | memset(tp, 0, sizeof(*tp)); |
| 5575 | |
| 5576 | if (dmi_name_in_vendors("IBM")) |
| 5577 | tp->vendor = PCI_VENDOR_ID_IBM; |
| 5578 | else if (dmi_name_in_vendors("LENOVO")) |
| 5579 | tp->vendor = PCI_VENDOR_ID_LENOVO; |
| 5580 | else |
| 5581 | return; |
| 5582 | |
| 5583 | tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION), |
| 5584 | GFP_KERNEL); |
| 5585 | if (!tp->bios_version_str) |
| 5586 | return; |
| 5587 | tp->bios_model = tp->bios_version_str[0] |
| 5588 | | (tp->bios_version_str[1] << 8); |
| 5589 | |
| 5590 | /* |
| 5591 | * ThinkPad T23 or newer, A31 or newer, R50e or newer, |
| 5592 | * X32 or newer, all Z series; Some models must have an |
| 5593 | * up-to-date BIOS or they will not be detected. |
| 5594 | * |
| 5595 | * See http://thinkwiki.org/wiki/List_of_DMI_IDs |
| 5596 | */ |
| 5597 | while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { |
| 5598 | if (sscanf(dev->name, |
| 5599 | "IBM ThinkPad Embedded Controller -[%17c", |
| 5600 | ec_fw_string) == 1) { |
| 5601 | ec_fw_string[sizeof(ec_fw_string) - 1] = 0; |
| 5602 | ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; |
| 5603 | |
| 5604 | tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); |
| 5605 | tp->ec_model = ec_fw_string[0] |
| 5606 | | (ec_fw_string[1] << 8); |
| 5607 | break; |
| 5608 | } |
| 5609 | } |
| 5610 | |
| 5611 | tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION), |
| 5612 | GFP_KERNEL); |
| 5613 | if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) { |
| 5614 | kfree(tp->model_str); |
| 5615 | tp->model_str = NULL; |
| 5616 | } |
| 5617 | } |
| 5618 | |
| 5619 | static int __init probe_for_thinkpad(void) |
| 5620 | { |
| 5621 | int is_thinkpad; |
| 5622 | |
| 5623 | if (acpi_disabled) |
| 5624 | return -ENODEV; |
| 5625 | |
| 5626 | /* |
| 5627 | * Non-ancient models have better DMI tagging, but very old models |
| 5628 | * don't. |
| 5629 | */ |
| 5630 | is_thinkpad = (thinkpad_id.model_str != NULL); |
| 5631 | |
| 5632 | /* ec is required because many other handles are relative to it */ |
| 5633 | TPACPI_ACPIHANDLE_INIT(ec); |
| 5634 | if (!ec_handle) { |
| 5635 | if (is_thinkpad) |
| 5636 | printk(TPACPI_ERR |
| 5637 | "Not yet supported ThinkPad detected!\n"); |
| 5638 | return -ENODEV; |
| 5639 | } |
| 5640 | |
| 5641 | /* |
| 5642 | * Risks a regression on very old machines, but reduces potential |
| 5643 | * false positives a damn great deal |
| 5644 | */ |
| 5645 | if (!is_thinkpad) |
| 5646 | is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM); |
| 5647 | |
| 5648 | if (!is_thinkpad && !force_load) |
| 5649 | return -ENODEV; |
| 5650 | |
| 5651 | return 0; |
| 5652 | } |
| 5653 | |
| 5654 | |
| 5655 | /* Module init, exit, parameters */ |
| 5656 | |
| 5657 | static struct ibm_init_struct ibms_init[] __initdata = { |
| 5658 | { |
| 5659 | .init = thinkpad_acpi_driver_init, |
| 5660 | .data = &thinkpad_acpi_driver_data, |
| 5661 | }, |
| 5662 | { |
| 5663 | .init = hotkey_init, |
| 5664 | .data = &hotkey_driver_data, |
| 5665 | }, |
| 5666 | { |
| 5667 | .init = bluetooth_init, |
| 5668 | .data = &bluetooth_driver_data, |
| 5669 | }, |
| 5670 | { |
| 5671 | .init = wan_init, |
| 5672 | .data = &wan_driver_data, |
| 5673 | }, |
| 5674 | { |
| 5675 | .init = video_init, |
| 5676 | .data = &video_driver_data, |
| 5677 | }, |
| 5678 | { |
| 5679 | .init = light_init, |
| 5680 | .data = &light_driver_data, |
| 5681 | }, |
| 5682 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
| 5683 | { |
| 5684 | .init = dock_init, |
| 5685 | .data = &dock_driver_data[0], |
| 5686 | }, |
| 5687 | { |
| 5688 | .init = dock_init2, |
| 5689 | .data = &dock_driver_data[1], |
| 5690 | }, |
| 5691 | #endif |
| 5692 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
| 5693 | { |
| 5694 | .init = bay_init, |
| 5695 | .data = &bay_driver_data, |
| 5696 | }, |
| 5697 | #endif |
| 5698 | { |
| 5699 | .init = cmos_init, |
| 5700 | .data = &cmos_driver_data, |
| 5701 | }, |
| 5702 | { |
| 5703 | .init = led_init, |
| 5704 | .data = &led_driver_data, |
| 5705 | }, |
| 5706 | { |
| 5707 | .init = beep_init, |
| 5708 | .data = &beep_driver_data, |
| 5709 | }, |
| 5710 | { |
| 5711 | .init = thermal_init, |
| 5712 | .data = &thermal_driver_data, |
| 5713 | }, |
| 5714 | { |
| 5715 | .data = &ecdump_driver_data, |
| 5716 | }, |
| 5717 | { |
| 5718 | .init = brightness_init, |
| 5719 | .data = &brightness_driver_data, |
| 5720 | }, |
| 5721 | { |
| 5722 | .data = &volume_driver_data, |
| 5723 | }, |
| 5724 | { |
| 5725 | .init = fan_init, |
| 5726 | .data = &fan_driver_data, |
| 5727 | }, |
| 5728 | }; |
| 5729 | |
| 5730 | static int __init set_ibm_param(const char *val, struct kernel_param *kp) |
| 5731 | { |
| 5732 | unsigned int i; |
| 5733 | struct ibm_struct *ibm; |
| 5734 | |
| 5735 | if (!kp || !kp->name || !val) |
| 5736 | return -EINVAL; |
| 5737 | |
| 5738 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
| 5739 | ibm = ibms_init[i].data; |
| 5740 | WARN_ON(ibm == NULL); |
| 5741 | |
| 5742 | if (!ibm || !ibm->name) |
| 5743 | continue; |
| 5744 | |
| 5745 | if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { |
| 5746 | if (strlen(val) > sizeof(ibms_init[i].param) - 2) |
| 5747 | return -ENOSPC; |
| 5748 | strcpy(ibms_init[i].param, val); |
| 5749 | strcat(ibms_init[i].param, ","); |
| 5750 | return 0; |
| 5751 | } |
| 5752 | } |
| 5753 | |
| 5754 | return -EINVAL; |
| 5755 | } |
| 5756 | |
| 5757 | module_param(experimental, int, 0); |
| 5758 | MODULE_PARM_DESC(experimental, |
| 5759 | "Enables experimental features when non-zero"); |
| 5760 | |
| 5761 | module_param_named(debug, dbg_level, uint, 0); |
| 5762 | MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); |
| 5763 | |
| 5764 | module_param(force_load, bool, 0); |
| 5765 | MODULE_PARM_DESC(force_load, |
| 5766 | "Attempts to load the driver even on a " |
| 5767 | "mis-identified ThinkPad when true"); |
| 5768 | |
| 5769 | module_param_named(fan_control, fan_control_allowed, bool, 0); |
| 5770 | MODULE_PARM_DESC(fan_control, |
| 5771 | "Enables setting fan parameters features when true"); |
| 5772 | |
| 5773 | module_param_named(brightness_mode, brightness_mode, int, 0); |
| 5774 | MODULE_PARM_DESC(brightness_mode, |
| 5775 | "Selects brightness control strategy: " |
| 5776 | "0=auto, 1=EC, 2=CMOS, 3=both"); |
| 5777 | |
| 5778 | module_param(brightness_enable, uint, 0); |
| 5779 | MODULE_PARM_DESC(brightness_enable, |
| 5780 | "Enables backlight control when 1, disables when 0"); |
| 5781 | |
| 5782 | module_param(hotkey_report_mode, uint, 0); |
| 5783 | MODULE_PARM_DESC(hotkey_report_mode, |
| 5784 | "used for backwards compatibility with userspace, " |
| 5785 | "see documentation"); |
| 5786 | |
| 5787 | #define TPACPI_PARAM(feature) \ |
| 5788 | module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ |
| 5789 | MODULE_PARM_DESC(feature, "Simulates thinkpad-aci procfs command " \ |
| 5790 | "at module load, see documentation") |
| 5791 | |
| 5792 | TPACPI_PARAM(hotkey); |
| 5793 | TPACPI_PARAM(bluetooth); |
| 5794 | TPACPI_PARAM(video); |
| 5795 | TPACPI_PARAM(light); |
| 5796 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
| 5797 | TPACPI_PARAM(dock); |
| 5798 | #endif |
| 5799 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
| 5800 | TPACPI_PARAM(bay); |
| 5801 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
| 5802 | TPACPI_PARAM(cmos); |
| 5803 | TPACPI_PARAM(led); |
| 5804 | TPACPI_PARAM(beep); |
| 5805 | TPACPI_PARAM(ecdump); |
| 5806 | TPACPI_PARAM(brightness); |
| 5807 | TPACPI_PARAM(volume); |
| 5808 | TPACPI_PARAM(fan); |
| 5809 | |
| 5810 | static void thinkpad_acpi_module_exit(void) |
| 5811 | { |
| 5812 | struct ibm_struct *ibm, *itmp; |
| 5813 | |
| 5814 | tpacpi_lifecycle = TPACPI_LIFE_EXITING; |
| 5815 | |
| 5816 | list_for_each_entry_safe_reverse(ibm, itmp, |
| 5817 | &tpacpi_all_drivers, |
| 5818 | all_drivers) { |
| 5819 | ibm_exit(ibm); |
| 5820 | } |
| 5821 | |
| 5822 | dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); |
| 5823 | |
| 5824 | if (tpacpi_inputdev) { |
| 5825 | if (tp_features.input_device_registered) |
| 5826 | input_unregister_device(tpacpi_inputdev); |
| 5827 | else |
| 5828 | input_free_device(tpacpi_inputdev); |
| 5829 | } |
| 5830 | |
| 5831 | if (tpacpi_hwmon) |
| 5832 | hwmon_device_unregister(tpacpi_hwmon); |
| 5833 | |
| 5834 | if (tp_features.sensors_pdev_attrs_registered) |
| 5835 | device_remove_file(&tpacpi_sensors_pdev->dev, |
| 5836 | &dev_attr_thinkpad_acpi_pdev_name); |
| 5837 | if (tpacpi_sensors_pdev) |
| 5838 | platform_device_unregister(tpacpi_sensors_pdev); |
| 5839 | if (tpacpi_pdev) |
| 5840 | platform_device_unregister(tpacpi_pdev); |
| 5841 | |
| 5842 | if (tp_features.sensors_pdrv_attrs_registered) |
| 5843 | tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); |
| 5844 | if (tp_features.platform_drv_attrs_registered) |
| 5845 | tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); |
| 5846 | |
| 5847 | if (tp_features.sensors_pdrv_registered) |
| 5848 | platform_driver_unregister(&tpacpi_hwmon_pdriver); |
| 5849 | |
| 5850 | if (tp_features.platform_drv_registered) |
| 5851 | platform_driver_unregister(&tpacpi_pdriver); |
| 5852 | |
| 5853 | if (proc_dir) |
| 5854 | remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); |
| 5855 | |
| 5856 | kfree(thinkpad_id.bios_version_str); |
| 5857 | kfree(thinkpad_id.ec_version_str); |
| 5858 | kfree(thinkpad_id.model_str); |
| 5859 | } |
| 5860 | |
| 5861 | |
| 5862 | static int __init thinkpad_acpi_module_init(void) |
| 5863 | { |
| 5864 | int ret, i; |
| 5865 | |
| 5866 | tpacpi_lifecycle = TPACPI_LIFE_INIT; |
| 5867 | |
| 5868 | /* Parameter checking */ |
| 5869 | if (hotkey_report_mode > 2) |
| 5870 | return -EINVAL; |
| 5871 | |
| 5872 | /* Driver-level probe */ |
| 5873 | |
| 5874 | get_thinkpad_model_data(&thinkpad_id); |
| 5875 | ret = probe_for_thinkpad(); |
| 5876 | if (ret) { |
| 5877 | thinkpad_acpi_module_exit(); |
| 5878 | return ret; |
| 5879 | } |
| 5880 | |
| 5881 | /* Driver initialization */ |
| 5882 | |
| 5883 | TPACPI_ACPIHANDLE_INIT(ecrd); |
| 5884 | TPACPI_ACPIHANDLE_INIT(ecwr); |
| 5885 | |
| 5886 | proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); |
| 5887 | if (!proc_dir) { |
| 5888 | printk(TPACPI_ERR |
| 5889 | "unable to create proc dir " TPACPI_PROC_DIR); |
| 5890 | thinkpad_acpi_module_exit(); |
| 5891 | return -ENODEV; |
| 5892 | } |
| 5893 | proc_dir->owner = THIS_MODULE; |
| 5894 | |
| 5895 | ret = platform_driver_register(&tpacpi_pdriver); |
| 5896 | if (ret) { |
| 5897 | printk(TPACPI_ERR |
| 5898 | "unable to register main platform driver\n"); |
| 5899 | thinkpad_acpi_module_exit(); |
| 5900 | return ret; |
| 5901 | } |
| 5902 | tp_features.platform_drv_registered = 1; |
| 5903 | |
| 5904 | ret = platform_driver_register(&tpacpi_hwmon_pdriver); |
| 5905 | if (ret) { |
| 5906 | printk(TPACPI_ERR |
| 5907 | "unable to register hwmon platform driver\n"); |
| 5908 | thinkpad_acpi_module_exit(); |
| 5909 | return ret; |
| 5910 | } |
| 5911 | tp_features.sensors_pdrv_registered = 1; |
| 5912 | |
| 5913 | ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); |
| 5914 | if (!ret) { |
| 5915 | tp_features.platform_drv_attrs_registered = 1; |
| 5916 | ret = tpacpi_create_driver_attributes( |
| 5917 | &tpacpi_hwmon_pdriver.driver); |
| 5918 | } |
| 5919 | if (ret) { |
| 5920 | printk(TPACPI_ERR |
| 5921 | "unable to create sysfs driver attributes\n"); |
| 5922 | thinkpad_acpi_module_exit(); |
| 5923 | return ret; |
| 5924 | } |
| 5925 | tp_features.sensors_pdrv_attrs_registered = 1; |
| 5926 | |
| 5927 | |
| 5928 | /* Device initialization */ |
| 5929 | tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, |
| 5930 | NULL, 0); |
| 5931 | if (IS_ERR(tpacpi_pdev)) { |
| 5932 | ret = PTR_ERR(tpacpi_pdev); |
| 5933 | tpacpi_pdev = NULL; |
| 5934 | printk(TPACPI_ERR "unable to register platform device\n"); |
| 5935 | thinkpad_acpi_module_exit(); |
| 5936 | return ret; |
| 5937 | } |
| 5938 | tpacpi_sensors_pdev = platform_device_register_simple( |
| 5939 | TPACPI_HWMON_DRVR_NAME, |
| 5940 | -1, NULL, 0); |
| 5941 | if (IS_ERR(tpacpi_sensors_pdev)) { |
| 5942 | ret = PTR_ERR(tpacpi_sensors_pdev); |
| 5943 | tpacpi_sensors_pdev = NULL; |
| 5944 | printk(TPACPI_ERR |
| 5945 | "unable to register hwmon platform device\n"); |
| 5946 | thinkpad_acpi_module_exit(); |
| 5947 | return ret; |
| 5948 | } |
| 5949 | ret = device_create_file(&tpacpi_sensors_pdev->dev, |
| 5950 | &dev_attr_thinkpad_acpi_pdev_name); |
| 5951 | if (ret) { |
| 5952 | printk(TPACPI_ERR |
| 5953 | "unable to create sysfs hwmon device attributes\n"); |
| 5954 | thinkpad_acpi_module_exit(); |
| 5955 | return ret; |
| 5956 | } |
| 5957 | tp_features.sensors_pdev_attrs_registered = 1; |
| 5958 | tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); |
| 5959 | if (IS_ERR(tpacpi_hwmon)) { |
| 5960 | ret = PTR_ERR(tpacpi_hwmon); |
| 5961 | tpacpi_hwmon = NULL; |
| 5962 | printk(TPACPI_ERR "unable to register hwmon device\n"); |
| 5963 | thinkpad_acpi_module_exit(); |
| 5964 | return ret; |
| 5965 | } |
| 5966 | mutex_init(&tpacpi_inputdev_send_mutex); |
| 5967 | tpacpi_inputdev = input_allocate_device(); |
| 5968 | if (!tpacpi_inputdev) { |
| 5969 | printk(TPACPI_ERR "unable to allocate input device\n"); |
| 5970 | thinkpad_acpi_module_exit(); |
| 5971 | return -ENOMEM; |
| 5972 | } else { |
| 5973 | /* Prepare input device, but don't register */ |
| 5974 | tpacpi_inputdev->name = "ThinkPad Extra Buttons"; |
| 5975 | tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; |
| 5976 | tpacpi_inputdev->id.bustype = BUS_HOST; |
| 5977 | tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ? |
| 5978 | thinkpad_id.vendor : |
| 5979 | PCI_VENDOR_ID_IBM; |
| 5980 | tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; |
| 5981 | tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; |
| 5982 | } |
| 5983 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
| 5984 | ret = ibm_init(&ibms_init[i]); |
| 5985 | if (ret >= 0 && *ibms_init[i].param) |
| 5986 | ret = ibms_init[i].data->write(ibms_init[i].param); |
| 5987 | if (ret < 0) { |
| 5988 | thinkpad_acpi_module_exit(); |
| 5989 | return ret; |
| 5990 | } |
| 5991 | } |
| 5992 | ret = input_register_device(tpacpi_inputdev); |
| 5993 | if (ret < 0) { |
| 5994 | printk(TPACPI_ERR "unable to register input device\n"); |
| 5995 | thinkpad_acpi_module_exit(); |
| 5996 | return ret; |
| 5997 | } else { |
| 5998 | tp_features.input_device_registered = 1; |
| 5999 | } |
| 6000 | |
| 6001 | tpacpi_lifecycle = TPACPI_LIFE_RUNNING; |
| 6002 | return 0; |
| 6003 | } |
| 6004 | |
| 6005 | /* Please remove this in year 2009 */ |
| 6006 | MODULE_ALIAS("ibm_acpi"); |
| 6007 | |
| 6008 | /* |
| 6009 | * DMI matching for module autoloading |
| 6010 | * |
| 6011 | * See http://thinkwiki.org/wiki/List_of_DMI_IDs |
| 6012 | * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads |
| 6013 | * |
| 6014 | * Only models listed in thinkwiki will be supported, so add yours |
| 6015 | * if it is not there yet. |
| 6016 | */ |
| 6017 | #define IBM_BIOS_MODULE_ALIAS(__type) \ |
| 6018 | MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW") |
| 6019 | |
| 6020 | /* Non-ancient thinkpads */ |
| 6021 | MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*"); |
| 6022 | MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*"); |
| 6023 | |
| 6024 | /* Ancient thinkpad BIOSes have to be identified by |
| 6025 | * BIOS type or model number, and there are far less |
| 6026 | * BIOS types than model numbers... */ |
| 6027 | IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]"); |
| 6028 | IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]"); |
| 6029 | IBM_BIOS_MODULE_ALIAS("K[U,X-Z]"); |
| 6030 | |
| 6031 | MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh"); |
| 6032 | MODULE_DESCRIPTION(TPACPI_DESC); |
| 6033 | MODULE_VERSION(TPACPI_VERSION); |
| 6034 | MODULE_LICENSE("GPL"); |
| 6035 | |
| 6036 | module_init(thinkpad_acpi_module_init); |
| 6037 | module_exit(thinkpad_acpi_module_exit); |