2 * Copyright 2008 Intel Corporation <hong.liu@intel.com>
3 * Copyright 2008 Red Hat <mjg@redhat.com>
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28 #include <linux/acpi.h>
29 #include <linux/dmi.h>
30 #include <acpi/video.h>
33 #include <drm/i915_drm.h>
35 #include "intel_drv.h"
37 #define OPREGION_HEADER_OFFSET 0
38 #define OPREGION_ACPI_OFFSET 0x100
39 #define ACPI_CLID 0x01ac /* current lid state indicator */
40 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
41 #define OPREGION_SWSCI_OFFSET 0x200
42 #define OPREGION_ASLE_OFFSET 0x300
43 #define OPREGION_VBT_OFFSET 0x400
44 #define OPREGION_ASLE_EXT_OFFSET 0x1C00
46 #define OPREGION_SIGNATURE "IntelGraphicsMem"
47 #define MBOX_ACPI (1<<0)
48 #define MBOX_SWSCI (1<<1)
49 #define MBOX_ASLE (1<<2)
50 #define MBOX_ASLE_EXT (1<<4)
52 struct opregion_header
{
66 /* OpRegion mailbox #1: public ACPI methods */
67 struct opregion_acpi
{
68 u32 drdy
; /* driver readiness */
69 u32 csts
; /* notification status */
70 u32 cevt
; /* current event */
72 u32 didl
[8]; /* supported display devices ID list */
73 u32 cpdl
[8]; /* currently presented display list */
74 u32 cadl
[8]; /* currently active display list */
75 u32 nadl
[8]; /* next active devices list */
76 u32 aslp
; /* ASL sleep time-out */
77 u32 tidx
; /* toggle table index */
78 u32 chpd
; /* current hotplug enable indicator */
79 u32 clid
; /* current lid state*/
80 u32 cdck
; /* current docking state */
81 u32 sxsw
; /* Sx state resume */
82 u32 evts
; /* ASL supported events */
83 u32 cnot
; /* current OS notification */
84 u32 nrdy
; /* driver status */
85 u32 did2
[7]; /* extended supported display devices ID list */
86 u32 cpd2
[7]; /* extended attached display devices list */
90 /* OpRegion mailbox #2: SWSCI */
91 struct opregion_swsci
{
92 u32 scic
; /* SWSCI command|status|data */
93 u32 parm
; /* command parameters */
94 u32 dslp
; /* driver sleep time-out */
98 /* OpRegion mailbox #3: ASLE */
99 struct opregion_asle
{
100 u32 ardy
; /* driver readiness */
101 u32 aslc
; /* ASLE interrupt command */
102 u32 tche
; /* technology enabled indicator */
103 u32 alsi
; /* current ALS illuminance reading */
104 u32 bclp
; /* backlight brightness to set */
105 u32 pfit
; /* panel fitting state */
106 u32 cblv
; /* current brightness level */
107 u16 bclm
[20]; /* backlight level duty cycle mapping table */
108 u32 cpfm
; /* current panel fitting mode */
109 u32 epfm
; /* enabled panel fitting modes */
110 u8 plut
[74]; /* panel LUT and identifier */
111 u32 pfmb
; /* PWM freq and min brightness */
112 u32 cddv
; /* color correction default values */
113 u32 pcft
; /* power conservation features */
114 u32 srot
; /* supported rotation angles */
115 u32 iuer
; /* IUER events */
119 u64 rvda
; /* Physical address of raw vbt data */
120 u32 rvds
; /* Size of raw vbt data */
124 /* OpRegion mailbox #5: ASLE ext */
125 struct opregion_asle_ext
{
126 u32 phed
; /* Panel Header */
127 u8 bddc
[256]; /* Panel EDID */
131 /* Driver readiness indicator */
132 #define ASLE_ARDY_READY (1 << 0)
133 #define ASLE_ARDY_NOT_READY (0 << 0)
135 /* ASLE Interrupt Command (ASLC) bits */
136 #define ASLC_SET_ALS_ILLUM (1 << 0)
137 #define ASLC_SET_BACKLIGHT (1 << 1)
138 #define ASLC_SET_PFIT (1 << 2)
139 #define ASLC_SET_PWM_FREQ (1 << 3)
140 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
141 #define ASLC_BUTTON_ARRAY (1 << 5)
142 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
143 #define ASLC_DOCKING_INDICATOR (1 << 7)
144 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
145 #define ASLC_REQ_MSK 0x1ff
147 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
148 #define ASLC_BACKLIGHT_FAILED (1 << 12)
149 #define ASLC_PFIT_FAILED (1 << 14)
150 #define ASLC_PWM_FREQ_FAILED (1 << 16)
151 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
152 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
153 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
154 #define ASLC_DOCKING_FAILED (1 << 24)
155 #define ASLC_ISCT_STATE_FAILED (1 << 26)
157 /* Technology enabled indicator */
158 #define ASLE_TCHE_ALS_EN (1 << 0)
159 #define ASLE_TCHE_BLC_EN (1 << 1)
160 #define ASLE_TCHE_PFIT_EN (1 << 2)
161 #define ASLE_TCHE_PFMB_EN (1 << 3)
163 /* ASLE backlight brightness to set */
164 #define ASLE_BCLP_VALID (1<<31)
165 #define ASLE_BCLP_MSK (~(1<<31))
167 /* ASLE panel fitting request */
168 #define ASLE_PFIT_VALID (1<<31)
169 #define ASLE_PFIT_CENTER (1<<0)
170 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
171 #define ASLE_PFIT_STRETCH_GFX (1<<2)
173 /* PWM frequency and minimum brightness */
174 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
175 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
176 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
177 #define ASLE_PFMB_PWM_VALID (1<<31)
179 #define ASLE_CBLV_VALID (1<<31)
182 #define ASLE_IUER_DOCKING (1 << 7)
183 #define ASLE_IUER_CONVERTIBLE (1 << 6)
184 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
185 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
186 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
187 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
188 #define ASLE_IUER_POWER_BTN (1 << 0)
190 /* Software System Control Interrupt (SWSCI) */
191 #define SWSCI_SCIC_INDICATOR (1 << 0)
192 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
193 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
194 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
195 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
196 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
197 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
198 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
199 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
200 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
202 #define SWSCI_FUNCTION_CODE(main, sub) \
203 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
204 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
206 /* SWSCI: Get BIOS Data (GBDA) */
208 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
209 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
210 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
211 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
212 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
213 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
214 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
216 /* SWSCI: System BIOS Callbacks (SBCB) */
218 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
219 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
220 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
221 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
222 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
223 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
224 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
225 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
226 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
227 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
228 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
229 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
230 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
231 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
232 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
233 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
235 #define ACPI_OTHER_OUTPUT (0<<8)
236 #define ACPI_VGA_OUTPUT (1<<8)
237 #define ACPI_TV_OUTPUT (2<<8)
238 #define ACPI_DIGITAL_OUTPUT (3<<8)
239 #define ACPI_LVDS_OUTPUT (4<<8)
241 #define MAX_DSLP 1500
243 static int swsci(struct drm_device
*dev
, u32 function
, u32 parm
, u32
*parm_out
)
245 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
246 struct opregion_swsci
*swsci
= dev_priv
->opregion
.swsci
;
247 u32 main_function
, sub_function
, scic
;
254 main_function
= (function
& SWSCI_SCIC_MAIN_FUNCTION_MASK
) >>
255 SWSCI_SCIC_MAIN_FUNCTION_SHIFT
;
256 sub_function
= (function
& SWSCI_SCIC_SUB_FUNCTION_MASK
) >>
257 SWSCI_SCIC_SUB_FUNCTION_SHIFT
;
259 /* Check if we can call the function. See swsci_setup for details. */
260 if (main_function
== SWSCI_SBCB
) {
261 if ((dev_priv
->opregion
.swsci_sbcb_sub_functions
&
262 (1 << sub_function
)) == 0)
264 } else if (main_function
== SWSCI_GBDA
) {
265 if ((dev_priv
->opregion
.swsci_gbda_sub_functions
&
266 (1 << sub_function
)) == 0)
270 /* Driver sleep timeout in ms. */
273 /* The spec says 2ms should be the default, but it's too small
274 * for some machines. */
276 } else if (dslp
> MAX_DSLP
) {
277 /* Hey bios, trust must be earned. */
278 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
279 "using %u ms instead\n", dslp
, MAX_DSLP
);
283 /* The spec tells us to do this, but we are the only user... */
285 if (scic
& SWSCI_SCIC_INDICATOR
) {
286 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
290 scic
= function
| SWSCI_SCIC_INDICATOR
;
295 /* Ensure SCI event is selected and event trigger is cleared. */
296 pci_read_config_word(dev
->pdev
, SWSCI
, &swsci_val
);
297 if (!(swsci_val
& SWSCI_SCISEL
) || (swsci_val
& SWSCI_GSSCIE
)) {
298 swsci_val
|= SWSCI_SCISEL
;
299 swsci_val
&= ~SWSCI_GSSCIE
;
300 pci_write_config_word(dev
->pdev
, SWSCI
, swsci_val
);
303 /* Use event trigger to tell bios to check the mail. */
304 swsci_val
|= SWSCI_GSSCIE
;
305 pci_write_config_word(dev
->pdev
, SWSCI
, swsci_val
);
307 /* Poll for the result. */
308 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
309 if (wait_for(C
, dslp
)) {
310 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
314 scic
= (scic
& SWSCI_SCIC_EXIT_STATUS_MASK
) >>
315 SWSCI_SCIC_EXIT_STATUS_SHIFT
;
317 /* Note: scic == 0 is an error! */
318 if (scic
!= SWSCI_SCIC_EXIT_STATUS_SUCCESS
) {
319 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic
);
324 *parm_out
= swsci
->parm
;
331 #define DISPLAY_TYPE_CRT 0
332 #define DISPLAY_TYPE_TV 1
333 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
334 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
336 int intel_opregion_notify_encoder(struct intel_encoder
*intel_encoder
,
339 struct drm_device
*dev
= intel_encoder
->base
.dev
;
344 /* don't care about old stuff for now */
348 if (intel_encoder
->type
== INTEL_OUTPUT_DSI
)
351 port
= intel_ddi_get_encoder_port(intel_encoder
);
353 if (port
== PORT_E
) {
363 switch (intel_encoder
->type
) {
364 case INTEL_OUTPUT_ANALOG
:
365 type
= DISPLAY_TYPE_CRT
;
367 case INTEL_OUTPUT_UNKNOWN
:
368 case INTEL_OUTPUT_DISPLAYPORT
:
369 case INTEL_OUTPUT_HDMI
:
370 case INTEL_OUTPUT_DP_MST
:
371 type
= DISPLAY_TYPE_EXTERNAL_FLAT_PANEL
;
373 case INTEL_OUTPUT_EDP
:
374 case INTEL_OUTPUT_DSI
:
375 type
= DISPLAY_TYPE_INTERNAL_FLAT_PANEL
;
378 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
379 intel_encoder
->type
);
383 parm
|= type
<< (16 + port
* 3);
385 return swsci(dev
, SWSCI_SBCB_DISPLAY_POWER_STATE
, parm
, NULL
);
388 static const struct {
389 pci_power_t pci_power_state
;
391 } power_state_map
[] = {
396 { PCI_D3cold
, 0x04 },
399 int intel_opregion_notify_adapter(struct drm_device
*dev
, pci_power_t state
)
406 for (i
= 0; i
< ARRAY_SIZE(power_state_map
); i
++) {
407 if (state
== power_state_map
[i
].pci_power_state
)
408 return swsci(dev
, SWSCI_SBCB_ADAPTER_POWER_STATE
,
409 power_state_map
[i
].parm
, NULL
);
415 static u32
asle_set_backlight(struct drm_device
*dev
, u32 bclp
)
417 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
418 struct intel_connector
*connector
;
419 struct opregion_asle
*asle
= dev_priv
->opregion
.asle
;
421 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp
);
423 if (acpi_video_get_backlight_type() == acpi_backlight_native
) {
424 DRM_DEBUG_KMS("opregion backlight request ignored\n");
428 if (!(bclp
& ASLE_BCLP_VALID
))
429 return ASLC_BACKLIGHT_FAILED
;
431 bclp
&= ASLE_BCLP_MSK
;
433 return ASLC_BACKLIGHT_FAILED
;
435 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
438 * Update backlight on all connectors that support backlight (usually
441 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp
);
442 for_each_intel_connector(dev
, connector
)
443 intel_panel_set_backlight_acpi(connector
, bclp
, 255);
444 asle
->cblv
= DIV_ROUND_UP(bclp
* 100, 255) | ASLE_CBLV_VALID
;
446 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
452 static u32
asle_set_als_illum(struct drm_device
*dev
, u32 alsi
)
454 /* alsi is the current ALS reading in lux. 0 indicates below sensor
455 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
456 DRM_DEBUG_DRIVER("Illum is not supported\n");
457 return ASLC_ALS_ILLUM_FAILED
;
460 static u32
asle_set_pwm_freq(struct drm_device
*dev
, u32 pfmb
)
462 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
463 return ASLC_PWM_FREQ_FAILED
;
466 static u32
asle_set_pfit(struct drm_device
*dev
, u32 pfit
)
468 /* Panel fitting is currently controlled by the X code, so this is a
469 noop until modesetting support works fully */
470 DRM_DEBUG_DRIVER("Pfit is not supported\n");
471 return ASLC_PFIT_FAILED
;
474 static u32
asle_set_supported_rotation_angles(struct drm_device
*dev
, u32 srot
)
476 DRM_DEBUG_DRIVER("SROT is not supported\n");
477 return ASLC_ROTATION_ANGLES_FAILED
;
480 static u32
asle_set_button_array(struct drm_device
*dev
, u32 iuer
)
483 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
484 if (iuer
& ASLE_IUER_ROTATION_LOCK_BTN
)
485 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
486 if (iuer
& ASLE_IUER_VOLUME_DOWN_BTN
)
487 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
488 if (iuer
& ASLE_IUER_VOLUME_UP_BTN
)
489 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
490 if (iuer
& ASLE_IUER_WINDOWS_BTN
)
491 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
492 if (iuer
& ASLE_IUER_POWER_BTN
)
493 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
495 return ASLC_BUTTON_ARRAY_FAILED
;
498 static u32
asle_set_convertible(struct drm_device
*dev
, u32 iuer
)
500 if (iuer
& ASLE_IUER_CONVERTIBLE
)
501 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
503 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
505 return ASLC_CONVERTIBLE_FAILED
;
508 static u32
asle_set_docking(struct drm_device
*dev
, u32 iuer
)
510 if (iuer
& ASLE_IUER_DOCKING
)
511 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
513 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
515 return ASLC_DOCKING_FAILED
;
518 static u32
asle_isct_state(struct drm_device
*dev
)
520 DRM_DEBUG_DRIVER("ISCT is not supported\n");
521 return ASLC_ISCT_STATE_FAILED
;
524 static void asle_work(struct work_struct
*work
)
526 struct intel_opregion
*opregion
=
527 container_of(work
, struct intel_opregion
, asle_work
);
528 struct drm_i915_private
*dev_priv
=
529 container_of(opregion
, struct drm_i915_private
, opregion
);
530 struct drm_device
*dev
= dev_priv
->dev
;
531 struct opregion_asle
*asle
= dev_priv
->opregion
.asle
;
538 aslc_req
= asle
->aslc
;
540 if (!(aslc_req
& ASLC_REQ_MSK
)) {
541 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
546 if (aslc_req
& ASLC_SET_ALS_ILLUM
)
547 aslc_stat
|= asle_set_als_illum(dev
, asle
->alsi
);
549 if (aslc_req
& ASLC_SET_BACKLIGHT
)
550 aslc_stat
|= asle_set_backlight(dev
, asle
->bclp
);
552 if (aslc_req
& ASLC_SET_PFIT
)
553 aslc_stat
|= asle_set_pfit(dev
, asle
->pfit
);
555 if (aslc_req
& ASLC_SET_PWM_FREQ
)
556 aslc_stat
|= asle_set_pwm_freq(dev
, asle
->pfmb
);
558 if (aslc_req
& ASLC_SUPPORTED_ROTATION_ANGLES
)
559 aslc_stat
|= asle_set_supported_rotation_angles(dev
,
562 if (aslc_req
& ASLC_BUTTON_ARRAY
)
563 aslc_stat
|= asle_set_button_array(dev
, asle
->iuer
);
565 if (aslc_req
& ASLC_CONVERTIBLE_INDICATOR
)
566 aslc_stat
|= asle_set_convertible(dev
, asle
->iuer
);
568 if (aslc_req
& ASLC_DOCKING_INDICATOR
)
569 aslc_stat
|= asle_set_docking(dev
, asle
->iuer
);
571 if (aslc_req
& ASLC_ISCT_STATE_CHANGE
)
572 aslc_stat
|= asle_isct_state(dev
);
574 asle
->aslc
= aslc_stat
;
577 void intel_opregion_asle_intr(struct drm_device
*dev
)
579 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
581 if (dev_priv
->opregion
.asle
)
582 schedule_work(&dev_priv
->opregion
.asle_work
);
585 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
586 #define ACPI_EV_LID (1<<1)
587 #define ACPI_EV_DOCK (1<<2)
589 static struct intel_opregion
*system_opregion
;
591 static int intel_opregion_video_event(struct notifier_block
*nb
,
592 unsigned long val
, void *data
)
594 /* The only video events relevant to opregion are 0x80. These indicate
595 either a docking event, lid switch or display switch request. In
596 Linux, these are handled by the dock, button and video drivers.
599 struct acpi_bus_event
*event
= data
;
600 struct opregion_acpi
*acpi
;
603 if (strcmp(event
->device_class
, ACPI_VIDEO_CLASS
) != 0)
606 if (!system_opregion
)
609 acpi
= system_opregion
->acpi
;
611 if (event
->type
== 0x80 && ((acpi
->cevt
& 1) == 0))
619 static struct notifier_block intel_opregion_notifier
= {
620 .notifier_call
= intel_opregion_video_event
,
624 * Initialise the DIDL field in opregion. This passes a list of devices to
625 * the firmware. Values are defined by section B.4.2 of the ACPI specification
629 static u32
get_did(struct intel_opregion
*opregion
, int i
)
633 if (i
< ARRAY_SIZE(opregion
->acpi
->didl
)) {
634 did
= opregion
->acpi
->didl
[i
];
636 i
-= ARRAY_SIZE(opregion
->acpi
->didl
);
638 if (WARN_ON(i
>= ARRAY_SIZE(opregion
->acpi
->did2
)))
641 did
= opregion
->acpi
->did2
[i
];
647 static void set_did(struct intel_opregion
*opregion
, int i
, u32 val
)
649 if (i
< ARRAY_SIZE(opregion
->acpi
->didl
)) {
650 opregion
->acpi
->didl
[i
] = val
;
652 i
-= ARRAY_SIZE(opregion
->acpi
->didl
);
654 if (WARN_ON(i
>= ARRAY_SIZE(opregion
->acpi
->did2
)))
657 opregion
->acpi
->did2
[i
] = val
;
661 static void intel_didl_outputs(struct drm_device
*dev
)
663 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
664 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
665 struct drm_connector
*connector
;
667 struct acpi_device
*acpi_dev
, *acpi_cdev
, *acpi_video_bus
= NULL
;
668 unsigned long long device_id
;
670 u32 temp
, max_outputs
;
673 handle
= ACPI_HANDLE(&dev
->pdev
->dev
);
674 if (!handle
|| acpi_bus_get_device(handle
, &acpi_dev
))
677 if (acpi_is_video_device(handle
))
678 acpi_video_bus
= acpi_dev
;
680 list_for_each_entry(acpi_cdev
, &acpi_dev
->children
, node
) {
681 if (acpi_is_video_device(acpi_cdev
->handle
)) {
682 acpi_video_bus
= acpi_cdev
;
688 if (!acpi_video_bus
) {
689 DRM_DEBUG_KMS("No ACPI video bus found\n");
694 * In theory, did2, the extended didl, gets added at opregion version
695 * 3.0. In practice, however, we're supposed to set it for earlier
696 * versions as well, since a BIOS that doesn't understand did2 should
697 * not look at it anyway. Use a variable so we can tweak this if a need
700 max_outputs
= ARRAY_SIZE(opregion
->acpi
->didl
) +
701 ARRAY_SIZE(opregion
->acpi
->did2
);
703 list_for_each_entry(acpi_cdev
, &acpi_video_bus
->children
, node
) {
704 if (i
>= max_outputs
) {
705 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
709 status
= acpi_evaluate_integer(acpi_cdev
->handle
, "_ADR",
711 if (ACPI_SUCCESS(status
)) {
714 set_did(opregion
, i
++, (u32
)(device_id
& 0x0f0f));
719 DRM_DEBUG_KMS("%d outputs detected\n", i
);
721 /* If fewer than max outputs, the list must be null terminated */
723 set_did(opregion
, i
, 0);
728 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
729 int output_type
= ACPI_OTHER_OUTPUT
;
730 if (i
>= max_outputs
) {
731 DRM_DEBUG_KMS("More than %u outputs in connector list\n",
735 switch (connector
->connector_type
) {
736 case DRM_MODE_CONNECTOR_VGA
:
737 case DRM_MODE_CONNECTOR_DVIA
:
738 output_type
= ACPI_VGA_OUTPUT
;
740 case DRM_MODE_CONNECTOR_Composite
:
741 case DRM_MODE_CONNECTOR_SVIDEO
:
742 case DRM_MODE_CONNECTOR_Component
:
743 case DRM_MODE_CONNECTOR_9PinDIN
:
744 output_type
= ACPI_TV_OUTPUT
;
746 case DRM_MODE_CONNECTOR_DVII
:
747 case DRM_MODE_CONNECTOR_DVID
:
748 case DRM_MODE_CONNECTOR_DisplayPort
:
749 case DRM_MODE_CONNECTOR_HDMIA
:
750 case DRM_MODE_CONNECTOR_HDMIB
:
751 output_type
= ACPI_DIGITAL_OUTPUT
;
753 case DRM_MODE_CONNECTOR_LVDS
:
754 output_type
= ACPI_LVDS_OUTPUT
;
757 temp
= get_did(opregion
, i
);
758 set_did(opregion
, i
, temp
| (1 << 31) | output_type
| i
);
764 static void intel_setup_cadls(struct drm_device
*dev
)
766 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
767 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
771 /* Initialize the CADL field by duplicating the DIDL values.
772 * Technically, this is not always correct as display outputs may exist,
773 * but not active. This initialization is necessary for some Clevo
774 * laptops that check this field before processing the brightness and
775 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
776 * there are less than eight devices. */
778 disp_id
= get_did(opregion
, i
);
779 opregion
->acpi
->cadl
[i
] = disp_id
;
780 } while (++i
< 8 && disp_id
!= 0);
783 void intel_opregion_init(struct drm_device
*dev
)
785 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
786 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
788 if (!opregion
->header
)
791 if (opregion
->acpi
) {
792 intel_didl_outputs(dev
);
793 intel_setup_cadls(dev
);
795 /* Notify BIOS we are ready to handle ACPI video ext notifs.
796 * Right now, all the events are handled by the ACPI video module.
797 * We don't actually need to do anything with them. */
798 opregion
->acpi
->csts
= 0;
799 opregion
->acpi
->drdy
= 1;
801 system_opregion
= opregion
;
802 register_acpi_notifier(&intel_opregion_notifier
);
805 if (opregion
->asle
) {
806 opregion
->asle
->tche
= ASLE_TCHE_BLC_EN
;
807 opregion
->asle
->ardy
= ASLE_ARDY_READY
;
811 void intel_opregion_fini(struct drm_device
*dev
)
813 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
814 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
816 if (!opregion
->header
)
820 opregion
->asle
->ardy
= ASLE_ARDY_NOT_READY
;
822 cancel_work_sync(&dev_priv
->opregion
.asle_work
);
824 if (opregion
->acpi
) {
825 opregion
->acpi
->drdy
= 0;
827 system_opregion
= NULL
;
828 unregister_acpi_notifier(&intel_opregion_notifier
);
831 /* just clear all opregion memory pointers now */
832 memunmap(opregion
->header
);
833 if (opregion
->rvda
) {
834 memunmap(opregion
->rvda
);
835 opregion
->rvda
= NULL
;
837 opregion
->header
= NULL
;
838 opregion
->acpi
= NULL
;
839 opregion
->swsci
= NULL
;
840 opregion
->asle
= NULL
;
841 opregion
->vbt
= NULL
;
842 opregion
->lid_state
= NULL
;
845 static void swsci_setup(struct drm_device
*dev
)
847 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
848 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
849 bool requested_callbacks
= false;
852 /* Sub-function code 0 is okay, let's allow them. */
853 opregion
->swsci_gbda_sub_functions
= 1;
854 opregion
->swsci_sbcb_sub_functions
= 1;
856 /* We use GBDA to ask for supported GBDA calls. */
857 if (swsci(dev
, SWSCI_GBDA_SUPPORTED_CALLS
, 0, &tmp
) == 0) {
858 /* make the bits match the sub-function codes */
860 opregion
->swsci_gbda_sub_functions
|= tmp
;
864 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
865 * must not call interfaces that are not specifically requested by the
868 if (swsci(dev
, SWSCI_GBDA_REQUESTED_CALLBACKS
, 0, &tmp
) == 0) {
869 /* here, the bits already match sub-function codes */
870 opregion
->swsci_sbcb_sub_functions
|= tmp
;
871 requested_callbacks
= true;
875 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
876 * the callback is _requested_. But we still can't call interfaces that
879 if (swsci(dev
, SWSCI_SBCB_SUPPORTED_CALLBACKS
, 0, &tmp
) == 0) {
880 /* make the bits match the sub-function codes */
881 u32 low
= tmp
& 0x7ff;
882 u32 high
= tmp
& ~0xfff; /* bit 11 is reserved */
883 tmp
= (high
<< 4) | (low
<< 1) | 1;
885 /* best guess what to do with supported wrt requested */
886 if (requested_callbacks
) {
887 u32 req
= opregion
->swsci_sbcb_sub_functions
;
888 if ((req
& tmp
) != req
)
889 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req
, tmp
);
890 /* XXX: for now, trust the requested callbacks */
891 /* opregion->swsci_sbcb_sub_functions &= tmp; */
893 opregion
->swsci_sbcb_sub_functions
|= tmp
;
897 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
898 opregion
->swsci_gbda_sub_functions
,
899 opregion
->swsci_sbcb_sub_functions
);
902 static int intel_no_opregion_vbt_callback(const struct dmi_system_id
*id
)
904 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
905 "VBIOS ROM for %s\n", id
->ident
);
909 static const struct dmi_system_id intel_no_opregion_vbt
[] = {
911 .callback
= intel_no_opregion_vbt_callback
,
912 .ident
= "ThinkCentre A57",
914 DMI_MATCH(DMI_SYS_VENDOR
, "LENOVO"),
915 DMI_MATCH(DMI_PRODUCT_NAME
, "97027RG"),
921 int intel_opregion_setup(struct drm_device
*dev
)
923 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
924 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
926 char buf
[sizeof(OPREGION_SIGNATURE
)];
930 BUILD_BUG_ON(sizeof(struct opregion_header
) != 0x100);
931 BUILD_BUG_ON(sizeof(struct opregion_acpi
) != 0x100);
932 BUILD_BUG_ON(sizeof(struct opregion_swsci
) != 0x100);
933 BUILD_BUG_ON(sizeof(struct opregion_asle
) != 0x100);
934 BUILD_BUG_ON(sizeof(struct opregion_asle_ext
) != 0x400);
936 pci_read_config_dword(dev
->pdev
, ASLS
, &asls
);
937 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls
);
939 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
943 INIT_WORK(&opregion
->asle_work
, asle_work
);
945 base
= memremap(asls
, OPREGION_SIZE
, MEMREMAP_WB
);
949 memcpy(buf
, base
, sizeof(buf
));
951 if (memcmp(buf
, OPREGION_SIGNATURE
, 16)) {
952 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
956 opregion
->header
= base
;
957 opregion
->lid_state
= base
+ ACPI_CLID
;
959 mboxes
= opregion
->header
->mboxes
;
960 if (mboxes
& MBOX_ACPI
) {
961 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
962 opregion
->acpi
= base
+ OPREGION_ACPI_OFFSET
;
965 if (mboxes
& MBOX_SWSCI
) {
966 DRM_DEBUG_DRIVER("SWSCI supported\n");
967 opregion
->swsci
= base
+ OPREGION_SWSCI_OFFSET
;
971 if (mboxes
& MBOX_ASLE
) {
972 DRM_DEBUG_DRIVER("ASLE supported\n");
973 opregion
->asle
= base
+ OPREGION_ASLE_OFFSET
;
975 opregion
->asle
->ardy
= ASLE_ARDY_NOT_READY
;
978 if (mboxes
& MBOX_ASLE_EXT
)
979 DRM_DEBUG_DRIVER("ASLE extension supported\n");
981 if (!dmi_check_system(intel_no_opregion_vbt
)) {
982 const void *vbt
= NULL
;
985 if (opregion
->header
->opregion_ver
>= 2 && opregion
->asle
&&
986 opregion
->asle
->rvda
&& opregion
->asle
->rvds
) {
987 opregion
->rvda
= memremap(opregion
->asle
->rvda
,
988 opregion
->asle
->rvds
,
990 vbt
= opregion
->rvda
;
991 vbt_size
= opregion
->asle
->rvds
;
994 if (intel_bios_is_valid_vbt(vbt
, vbt_size
)) {
995 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
997 opregion
->vbt_size
= vbt_size
;
999 vbt
= base
+ OPREGION_VBT_OFFSET
;
1000 vbt_size
= OPREGION_ASLE_EXT_OFFSET
- OPREGION_VBT_OFFSET
;
1001 if (intel_bios_is_valid_vbt(vbt
, vbt_size
)) {
1002 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1003 opregion
->vbt
= vbt
;
1004 opregion
->vbt_size
= vbt_size
;
1017 intel_opregion_get_panel_type(struct drm_device
*dev
)
1022 ret
= swsci(dev
, SWSCI_GBDA_PANEL_DETAILS
, 0x0, &panel_details
);
1024 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n",
1029 ret
= (panel_details
>> 8) & 0xff;
1031 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret
);
1035 /* fall back to VBT panel type? */
1037 DRM_DEBUG_KMS("No panel type in OpRegion\n");