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
29 #include <drm/i915_drm.h>
31 #include "intel_drv.h"
33 #include <contrib/dev/acpica/source/include/acpi.h>
34 #include <contrib/dev/acpica/source/include/accommon.h>
35 #include <dev/acpica/acpivar.h>
39 #define PCI_SWSCI 0xe8
40 #define PCI_SWSCI_SCISEL (1 << 15)
41 #define PCI_SWSCI_GSSCIE (1 << 0)
43 #define OPREGION_HEADER_OFFSET 0
44 #define OPREGION_ACPI_OFFSET 0x100
45 #define ACPI_CLID 0x01ac /* current lid state indicator */
46 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
47 #define OPREGION_SWSCI_OFFSET 0x200
48 #define OPREGION_ASLE_OFFSET 0x300
49 #define OPREGION_VBT_OFFSET 0x400
51 #define OPREGION_SIGNATURE "IntelGraphicsMem"
52 #define MBOX_ACPI (1<<0)
53 #define MBOX_SWSCI (1<<1)
54 #define MBOX_ASLE (1<<2)
56 struct opregion_header
{
67 /* OpRegion mailbox #1: public ACPI methods */
68 struct opregion_acpi
{
69 u32 drdy
; /* driver readiness */
70 u32 csts
; /* notification status */
71 u32 cevt
; /* current event */
73 u32 didl
[8]; /* supported display devices ID list */
74 u32 cpdl
[8]; /* currently presented display list */
75 u32 cadl
[8]; /* currently active display list */
76 u32 nadl
[8]; /* next active devices list */
77 u32 aslp
; /* ASL sleep time-out */
78 u32 tidx
; /* toggle table index */
79 u32 chpd
; /* current hotplug enable indicator */
80 u32 clid
; /* current lid state*/
81 u32 cdck
; /* current docking state */
82 u32 sxsw
; /* Sx state resume */
83 u32 evts
; /* ASL supported events */
84 u32 cnot
; /* current OS notification */
85 u32 nrdy
; /* driver status */
89 /* OpRegion mailbox #2: SWSCI */
90 struct opregion_swsci
{
91 u32 scic
; /* SWSCI command|status|data */
92 u32 parm
; /* command parameters */
93 u32 dslp
; /* driver sleep time-out */
97 /* OpRegion mailbox #3: ASLE */
98 struct opregion_asle
{
99 u32 ardy
; /* driver readiness */
100 u32 aslc
; /* ASLE interrupt command */
101 u32 tche
; /* technology enabled indicator */
102 u32 alsi
; /* current ALS illuminance reading */
103 u32 bclp
; /* backlight brightness to set */
104 u32 pfit
; /* panel fitting state */
105 u32 cblv
; /* current brightness level */
106 u16 bclm
[20]; /* backlight level duty cycle mapping table */
107 u32 cpfm
; /* current panel fitting mode */
108 u32 epfm
; /* enabled panel fitting modes */
109 u8 plut
[74]; /* panel LUT and identifier */
110 u32 pfmb
; /* PWM freq and min brightness */
111 u32 cddv
; /* color correction default values */
112 u32 pcft
; /* power conservation features */
113 u32 srot
; /* supported rotation angles */
114 u32 iuer
; /* IUER events */
118 /* Driver readiness indicator */
119 #define ASLE_ARDY_READY (1 << 0)
120 #define ASLE_ARDY_NOT_READY (0 << 0)
122 /* ASLE Interrupt Command (ASLC) bits */
123 #define ASLC_SET_ALS_ILLUM (1 << 0)
124 #define ASLC_SET_BACKLIGHT (1 << 1)
125 #define ASLC_SET_PFIT (1 << 2)
126 #define ASLC_SET_PWM_FREQ (1 << 3)
127 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
128 #define ASLC_BUTTON_ARRAY (1 << 5)
129 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
130 #define ASLC_DOCKING_INDICATOR (1 << 7)
131 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
132 #define ASLC_REQ_MSK 0x1ff
134 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
135 #define ASLC_BACKLIGHT_FAILED (1 << 12)
136 #define ASLC_PFIT_FAILED (1 << 14)
137 #define ASLC_PWM_FREQ_FAILED (1 << 16)
138 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
139 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
140 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
141 #define ASLC_DOCKING_FAILED (1 << 24)
142 #define ASLC_ISCT_STATE_FAILED (1 << 26)
144 /* Technology enabled indicator */
145 #define ASLE_TCHE_ALS_EN (1 << 0)
146 #define ASLE_TCHE_BLC_EN (1 << 1)
147 #define ASLE_TCHE_PFIT_EN (1 << 2)
148 #define ASLE_TCHE_PFMB_EN (1 << 3)
150 /* ASLE backlight brightness to set */
151 #define ASLE_BCLP_VALID (1<<31)
152 #define ASLE_BCLP_MSK (~(1<<31))
154 /* ASLE panel fitting request */
155 #define ASLE_PFIT_VALID (1<<31)
156 #define ASLE_PFIT_CENTER (1<<0)
157 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
158 #define ASLE_PFIT_STRETCH_GFX (1<<2)
160 /* PWM frequency and minimum brightness */
161 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
162 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
163 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
164 #define ASLE_PFMB_PWM_VALID (1<<31)
166 #define ASLE_CBLV_VALID (1<<31)
169 #define ASLE_IUER_DOCKING (1 << 7)
170 #define ASLE_IUER_CONVERTIBLE (1 << 6)
171 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
172 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
173 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
174 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
175 #define ASLE_IUER_POWER_BTN (1 << 0)
177 /* Software System Control Interrupt (SWSCI) */
178 #define SWSCI_SCIC_INDICATOR (1 << 0)
179 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
180 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
181 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
182 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
183 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
184 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
185 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
186 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
187 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
189 #define SWSCI_FUNCTION_CODE(main, sub) \
190 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
191 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
193 /* SWSCI: Get BIOS Data (GBDA) */
195 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
196 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
197 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
198 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
199 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
200 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
201 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
203 /* SWSCI: System BIOS Callbacks (SBCB) */
205 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
206 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
207 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
208 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
209 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
210 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
211 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
212 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
213 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
214 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
215 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
216 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
217 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
218 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
219 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
220 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
222 #define ACPI_OTHER_OUTPUT (0<<8)
223 #define ACPI_VGA_OUTPUT (1<<8)
224 #define ACPI_TV_OUTPUT (2<<8)
225 #define ACPI_DIGITAL_OUTPUT (3<<8)
226 #define ACPI_LVDS_OUTPUT (4<<8)
228 #define MAX_DSLP 1500
231 static int swsci(struct drm_device
*dev
, u32 function
, u32 parm
, u32
*parm_out
)
233 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
234 struct opregion_swsci __iomem
*swsci
= dev_priv
->opregion
.swsci
;
235 u32 main_function
, sub_function
, scic
;
242 main_function
= (function
& SWSCI_SCIC_MAIN_FUNCTION_MASK
) >>
243 SWSCI_SCIC_MAIN_FUNCTION_SHIFT
;
244 sub_function
= (function
& SWSCI_SCIC_SUB_FUNCTION_MASK
) >>
245 SWSCI_SCIC_SUB_FUNCTION_SHIFT
;
247 /* Check if we can call the function. See swsci_setup for details. */
248 if (main_function
== SWSCI_SBCB
) {
249 if ((dev_priv
->opregion
.swsci_sbcb_sub_functions
&
250 (1 << sub_function
)) == 0)
252 } else if (main_function
== SWSCI_GBDA
) {
253 if ((dev_priv
->opregion
.swsci_gbda_sub_functions
&
254 (1 << sub_function
)) == 0)
258 /* Driver sleep timeout in ms. */
259 dslp
= ioread32(&swsci
->dslp
);
261 /* The spec says 2ms should be the default, but it's too small
262 * for some machines. */
264 } else if (dslp
> MAX_DSLP
) {
265 /* Hey bios, trust must be earned. */
266 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
267 "using %u ms instead\n", dslp
, MAX_DSLP
);
271 /* The spec tells us to do this, but we are the only user... */
272 scic
= ioread32(&swsci
->scic
);
273 if (scic
& SWSCI_SCIC_INDICATOR
) {
274 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
278 scic
= function
| SWSCI_SCIC_INDICATOR
;
280 iowrite32(parm
, &swsci
->parm
);
281 iowrite32(scic
, &swsci
->scic
);
283 /* Ensure SCI event is selected and event trigger is cleared. */
284 pci_read_config_word(dev
->pdev
, PCI_SWSCI
, &pci_swsci
);
285 if (!(pci_swsci
& PCI_SWSCI_SCISEL
) || (pci_swsci
& PCI_SWSCI_GSSCIE
)) {
286 pci_swsci
|= PCI_SWSCI_SCISEL
;
287 pci_swsci
&= ~PCI_SWSCI_GSSCIE
;
288 pci_write_config_word(dev
->pdev
, PCI_SWSCI
, pci_swsci
);
291 /* Use event trigger to tell bios to check the mail. */
292 pci_swsci
|= PCI_SWSCI_GSSCIE
;
293 pci_write_config_word(dev
->pdev
, PCI_SWSCI
, pci_swsci
);
295 /* Poll for the result. */
296 #define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0)
297 if (wait_for(C
, dslp
)) {
298 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
302 scic
= (scic
& SWSCI_SCIC_EXIT_STATUS_MASK
) >>
303 SWSCI_SCIC_EXIT_STATUS_SHIFT
;
305 /* Note: scic == 0 is an error! */
306 if (scic
!= SWSCI_SCIC_EXIT_STATUS_SUCCESS
) {
307 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic
);
312 *parm_out
= ioread32(&swsci
->parm
);
319 #define DISPLAY_TYPE_CRT 0
320 #define DISPLAY_TYPE_TV 1
321 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
322 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
324 int intel_opregion_notify_encoder(struct intel_encoder
*intel_encoder
,
327 struct drm_device
*dev
= intel_encoder
->base
.dev
;
332 /* don't care about old stuff for now */
336 port
= intel_ddi_get_encoder_port(intel_encoder
);
337 if (port
== PORT_E
) {
347 switch (intel_encoder
->type
) {
348 case INTEL_OUTPUT_ANALOG
:
349 type
= DISPLAY_TYPE_CRT
;
351 case INTEL_OUTPUT_UNKNOWN
:
352 case INTEL_OUTPUT_DISPLAYPORT
:
353 case INTEL_OUTPUT_HDMI
:
354 type
= DISPLAY_TYPE_EXTERNAL_FLAT_PANEL
;
356 case INTEL_OUTPUT_EDP
:
357 type
= DISPLAY_TYPE_INTERNAL_FLAT_PANEL
;
360 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
361 intel_encoder
->type
);
365 parm
|= type
<< (16 + port
* 3);
367 return swsci(dev
, SWSCI_SBCB_DISPLAY_POWER_STATE
, parm
, NULL
);
370 static const struct {
371 pci_power_t pci_power_state
;
373 } power_state_map
[] = {
378 { PCI_D3cold
, 0x04 },
381 int intel_opregion_notify_adapter(struct drm_device
*dev
, pci_power_t state
)
388 for (i
= 0; i
< ARRAY_SIZE(power_state_map
); i
++) {
389 if (state
== power_state_map
[i
].pci_power_state
)
390 return swsci(dev
, SWSCI_SBCB_ADAPTER_POWER_STATE
,
391 power_state_map
[i
].parm
, NULL
);
397 static u32
asle_set_backlight(struct drm_device
*dev
, u32 bclp
)
399 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
400 struct intel_connector
*intel_connector
;
401 struct opregion_asle __iomem
*asle
= dev_priv
->opregion
.asle
;
403 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp
);
408 if (acpi_video_get_backlight_type() == acpi_backlight_native
) {
410 DRM_DEBUG_KMS("opregion backlight request ignored\n");
414 if (!(bclp
& ASLE_BCLP_VALID
))
415 return ASLC_BACKLIGHT_FAILED
;
417 bclp
&= ASLE_BCLP_MSK
;
419 return ASLC_BACKLIGHT_FAILED
;
421 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
424 * Update backlight on all connectors that support backlight (usually
427 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp
);
428 list_for_each_entry(intel_connector
, &dev
->mode_config
.connector_list
, base
.head
)
429 intel_panel_set_backlight_acpi(intel_connector
, bclp
, 255);
430 iowrite32(DIV_ROUND_UP(bclp
* 100, 255) | ASLE_CBLV_VALID
, &asle
->cblv
);
432 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
438 static u32
asle_set_als_illum(struct drm_device
*dev
, u32 alsi
)
440 /* alsi is the current ALS reading in lux. 0 indicates below sensor
441 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
442 DRM_DEBUG_DRIVER("Illum is not supported\n");
443 return ASLC_ALS_ILLUM_FAILED
;
446 static u32
asle_set_pwm_freq(struct drm_device
*dev
, u32 pfmb
)
448 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
449 return ASLC_PWM_FREQ_FAILED
;
452 static u32
asle_set_pfit(struct drm_device
*dev
, u32 pfit
)
454 /* Panel fitting is currently controlled by the X code, so this is a
455 noop until modesetting support works fully */
456 DRM_DEBUG_DRIVER("Pfit is not supported\n");
457 return ASLC_PFIT_FAILED
;
460 static u32
asle_set_supported_rotation_angles(struct drm_device
*dev
, u32 srot
)
462 DRM_DEBUG_DRIVER("SROT is not supported\n");
463 return ASLC_ROTATION_ANGLES_FAILED
;
466 static u32
asle_set_button_array(struct drm_device
*dev
, u32 iuer
)
469 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
470 if (iuer
& ASLE_IUER_ROTATION_LOCK_BTN
)
471 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
472 if (iuer
& ASLE_IUER_VOLUME_DOWN_BTN
)
473 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
474 if (iuer
& ASLE_IUER_VOLUME_UP_BTN
)
475 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
476 if (iuer
& ASLE_IUER_WINDOWS_BTN
)
477 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
478 if (iuer
& ASLE_IUER_POWER_BTN
)
479 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
481 return ASLC_BUTTON_ARRAY_FAILED
;
484 static u32
asle_set_convertible(struct drm_device
*dev
, u32 iuer
)
486 if (iuer
& ASLE_IUER_CONVERTIBLE
)
487 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
489 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
491 return ASLC_CONVERTIBLE_FAILED
;
494 static u32
asle_set_docking(struct drm_device
*dev
, u32 iuer
)
496 if (iuer
& ASLE_IUER_DOCKING
)
497 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
499 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
501 return ASLC_DOCKING_FAILED
;
504 static u32
asle_isct_state(struct drm_device
*dev
)
506 DRM_DEBUG_DRIVER("ISCT is not supported\n");
507 return ASLC_ISCT_STATE_FAILED
;
510 static void asle_work(struct work_struct
*work
)
512 struct intel_opregion
*opregion
=
513 container_of(work
, struct intel_opregion
, asle_work
);
514 struct drm_i915_private
*dev_priv
=
515 container_of(opregion
, struct drm_i915_private
, opregion
);
516 struct drm_device
*dev
= dev_priv
->dev
;
517 struct opregion_asle __iomem
*asle
= dev_priv
->opregion
.asle
;
524 aslc_req
= ioread32(&asle
->aslc
);
526 if (!(aslc_req
& ASLC_REQ_MSK
)) {
527 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
532 if (aslc_req
& ASLC_SET_ALS_ILLUM
)
533 aslc_stat
|= asle_set_als_illum(dev
, ioread32(&asle
->alsi
));
535 if (aslc_req
& ASLC_SET_BACKLIGHT
)
536 aslc_stat
|= asle_set_backlight(dev
, ioread32(&asle
->bclp
));
538 if (aslc_req
& ASLC_SET_PFIT
)
539 aslc_stat
|= asle_set_pfit(dev
, ioread32(&asle
->pfit
));
541 if (aslc_req
& ASLC_SET_PWM_FREQ
)
542 aslc_stat
|= asle_set_pwm_freq(dev
, ioread32(&asle
->pfmb
));
544 if (aslc_req
& ASLC_SUPPORTED_ROTATION_ANGLES
)
545 aslc_stat
|= asle_set_supported_rotation_angles(dev
,
546 ioread32(&asle
->srot
));
548 if (aslc_req
& ASLC_BUTTON_ARRAY
)
549 aslc_stat
|= asle_set_button_array(dev
, ioread32(&asle
->iuer
));
551 if (aslc_req
& ASLC_CONVERTIBLE_INDICATOR
)
552 aslc_stat
|= asle_set_convertible(dev
, ioread32(&asle
->iuer
));
554 if (aslc_req
& ASLC_DOCKING_INDICATOR
)
555 aslc_stat
|= asle_set_docking(dev
, ioread32(&asle
->iuer
));
557 if (aslc_req
& ASLC_ISCT_STATE_CHANGE
)
558 aslc_stat
|= asle_isct_state(dev
);
560 iowrite32(aslc_stat
, &asle
->aslc
);
563 void intel_opregion_asle_intr(struct drm_device
*dev
)
565 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
567 if (dev_priv
->opregion
.asle
)
568 schedule_work(&dev_priv
->opregion
.asle_work
);
571 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
572 #define ACPI_EV_LID (1<<1)
573 #define ACPI_EV_DOCK (1<<2)
575 static struct intel_opregion
*system_opregion
;
578 static int intel_opregion_video_event(struct notifier_block
*nb
,
579 unsigned long val
, void *data
)
581 /* The only video events relevant to opregion are 0x80. These indicate
582 either a docking event, lid switch or display switch request. In
583 Linux, these are handled by the dock, button and video drivers.
586 struct opregion_acpi __iomem
*acpi
;
587 struct acpi_bus_event
*event
= data
;
590 if (strcmp(event
->device_class
, ACPI_VIDEO_CLASS
) != 0)
593 if (!system_opregion
)
596 acpi
= system_opregion
->acpi
;
598 if (event
->type
== 0x80 &&
599 (ioread32(&acpi
->cevt
) & 1) == 0)
602 iowrite32(0, &acpi
->csts
);
607 static struct notifier_block intel_opregion_notifier
= {
608 .notifier_call
= intel_opregion_video_event
,
612 static int acpi_is_video_device(ACPI_HANDLE devh
) {
614 if (ACPI_FAILURE(AcpiGetHandle(devh
, "_DOD", &h
)) ||
615 ACPI_FAILURE(AcpiGetHandle(devh
, "_DOS", &h
))) {
622 * Initialise the DIDL field in opregion. This passes a list of devices to
623 * the firmware. Values are defined by section B.4.2 of the ACPI specification
627 static void intel_didl_outputs(struct drm_device
*dev
)
629 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
630 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
631 struct drm_connector
*connector
;
632 ACPI_HANDLE handle
, acpi_cdev
, acpi_video_bus
;
638 handle
= acpi_get_handle(dev
->dev
);
642 if (acpi_is_video_device(handle
))
643 acpi_video_bus
= handle
;
646 acpi_video_bus
= NULL
;
647 while (AcpiGetNextObject(ACPI_TYPE_DEVICE
, handle
, acpi_cdev
,
648 &acpi_cdev
) != AE_NOT_FOUND
) {
649 if (acpi_is_video_device(acpi_cdev
)) {
650 acpi_video_bus
= acpi_cdev
;
656 if (!acpi_video_bus
) {
657 pr_warn("No ACPI video bus found\n");
662 while (AcpiGetNextObject(ACPI_TYPE_DEVICE
, acpi_video_bus
, acpi_cdev
,
663 &acpi_cdev
) != AE_NOT_FOUND
) {
665 device_printf(dev
->dev
,
666 "More than 8 outputs detected via ACPI\n");
669 status
= acpi_GetInteger(acpi_cdev
, "_ADR", &device_id
);
670 if (ACPI_SUCCESS(status
)) {
673 iowrite32((u32
)(device_id
& 0x0f0f),
674 &opregion
->acpi
->didl
[i
]);
680 /* If fewer than 8 outputs, the list must be null terminated */
682 iowrite32(0, &opregion
->acpi
->didl
[i
]);
687 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
688 int output_type
= ACPI_OTHER_OUTPUT
;
690 device_printf(dev
->dev
,
691 "More than 8 outputs in connector list\n");
694 switch (connector
->connector_type
) {
695 case DRM_MODE_CONNECTOR_VGA
:
696 case DRM_MODE_CONNECTOR_DVIA
:
697 output_type
= ACPI_VGA_OUTPUT
;
699 case DRM_MODE_CONNECTOR_Composite
:
700 case DRM_MODE_CONNECTOR_SVIDEO
:
701 case DRM_MODE_CONNECTOR_Component
:
702 case DRM_MODE_CONNECTOR_9PinDIN
:
703 output_type
= ACPI_TV_OUTPUT
;
705 case DRM_MODE_CONNECTOR_DVII
:
706 case DRM_MODE_CONNECTOR_DVID
:
707 case DRM_MODE_CONNECTOR_DisplayPort
:
708 case DRM_MODE_CONNECTOR_HDMIA
:
709 case DRM_MODE_CONNECTOR_HDMIB
:
710 output_type
= ACPI_DIGITAL_OUTPUT
;
712 case DRM_MODE_CONNECTOR_LVDS
:
713 output_type
= ACPI_LVDS_OUTPUT
;
716 temp
= ioread32(&opregion
->acpi
->didl
[i
]);
717 iowrite32(temp
| (1<<31) | output_type
| i
,
718 &opregion
->acpi
->didl
[i
]);
724 static void intel_setup_cadls(struct drm_device
*dev
)
726 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
727 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
731 /* Initialize the CADL field by duplicating the DIDL values.
732 * Technically, this is not always correct as display outputs may exist,
733 * but not active. This initialization is necessary for some Clevo
734 * laptops that check this field before processing the brightness and
735 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
736 * there are less than eight devices. */
738 disp_id
= ioread32(&opregion
->acpi
->didl
[i
]);
739 iowrite32(disp_id
, &opregion
->acpi
->cadl
[i
]);
740 } while (++i
< 8 && disp_id
!= 0);
743 void intel_opregion_init(struct drm_device
*dev
)
745 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
746 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
748 if (!opregion
->header
)
751 if (opregion
->acpi
) {
752 intel_didl_outputs(dev
);
753 intel_setup_cadls(dev
);
755 /* Notify BIOS we are ready to handle ACPI video ext notifs.
756 * Right now, all the events are handled by the ACPI video module.
757 * We don't actually need to do anything with them. */
758 iowrite32(0, &opregion
->acpi
->csts
);
759 iowrite32(1, &opregion
->acpi
->drdy
);
761 system_opregion
= opregion
;
764 if (opregion
->asle
) {
765 iowrite32(ASLE_TCHE_BLC_EN
, &opregion
->asle
->tche
);
766 iowrite32(ASLE_ARDY_READY
, &opregion
->asle
->ardy
);
770 void intel_opregion_fini(struct drm_device
*dev
)
772 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
773 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
775 if (!opregion
->header
)
779 iowrite32(ASLE_ARDY_NOT_READY
, &opregion
->asle
->ardy
);
781 cancel_work_sync(&dev_priv
->opregion
.asle_work
);
783 if (opregion
->acpi
) {
784 iowrite32(0, &opregion
->acpi
->drdy
);
786 system_opregion
= NULL
;
789 /* just clear all opregion memory pointers now */
790 iounmap(opregion
->header
);
791 opregion
->header
= NULL
;
792 opregion
->acpi
= NULL
;
793 opregion
->swsci
= NULL
;
794 opregion
->asle
= NULL
;
795 opregion
->vbt
= NULL
;
796 opregion
->lid_state
= NULL
;
799 static void swsci_setup(struct drm_device
*dev
)
801 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
802 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
803 bool requested_callbacks
= false;
806 /* Sub-function code 0 is okay, let's allow them. */
807 opregion
->swsci_gbda_sub_functions
= 1;
808 opregion
->swsci_sbcb_sub_functions
= 1;
810 /* We use GBDA to ask for supported GBDA calls. */
811 if (swsci(dev
, SWSCI_GBDA_SUPPORTED_CALLS
, 0, &tmp
) == 0) {
812 /* make the bits match the sub-function codes */
814 opregion
->swsci_gbda_sub_functions
|= tmp
;
818 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
819 * must not call interfaces that are not specifically requested by the
822 if (swsci(dev
, SWSCI_GBDA_REQUESTED_CALLBACKS
, 0, &tmp
) == 0) {
823 /* here, the bits already match sub-function codes */
824 opregion
->swsci_sbcb_sub_functions
|= tmp
;
825 requested_callbacks
= true;
829 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
830 * the callback is _requested_. But we still can't call interfaces that
833 if (swsci(dev
, SWSCI_SBCB_SUPPORTED_CALLBACKS
, 0, &tmp
) == 0) {
834 /* make the bits match the sub-function codes */
835 u32 low
= tmp
& 0x7ff;
836 u32 high
= tmp
& ~0xfff; /* bit 11 is reserved */
837 tmp
= (high
<< 4) | (low
<< 1) | 1;
839 /* best guess what to do with supported wrt requested */
840 if (requested_callbacks
) {
841 u32 req
= opregion
->swsci_sbcb_sub_functions
;
842 if ((req
& tmp
) != req
)
843 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req
, tmp
);
844 /* XXX: for now, trust the requested callbacks */
845 /* opregion->swsci_sbcb_sub_functions &= tmp; */
847 opregion
->swsci_sbcb_sub_functions
|= tmp
;
851 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
852 opregion
->swsci_gbda_sub_functions
,
853 opregion
->swsci_sbcb_sub_functions
);
855 #else /* CONFIG_ACPI */
856 static inline void swsci_setup(struct drm_device
*dev
) {}
857 #endif /* CONFIG_ACPI */
859 int intel_opregion_setup(struct drm_device
*dev
)
861 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
862 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
865 char buf
[sizeof(OPREGION_SIGNATURE
)];
868 pci_read_config_dword(dev
->pdev
, PCI_ASLS
, &asls
);
869 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls
);
871 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
876 INIT_WORK(&opregion
->asle_work
, asle_work
);
879 base
= (void *)pmap_mapbios(asls
, OPREGION_SIZE
);
883 memcpy_fromio(buf
, base
, sizeof(buf
));
885 if (memcmp(buf
, OPREGION_SIGNATURE
, 16)) {
886 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
890 opregion
->header
= (struct opregion_header
*)base
;
891 opregion
->vbt
= base
+ OPREGION_VBT_OFFSET
;
893 opregion
->lid_state
= (u32
*)(base
+ ACPI_CLID
);
895 mboxes
= ioread32(&opregion
->header
->mboxes
);
896 if (mboxes
& MBOX_ACPI
) {
897 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
898 opregion
->acpi
= (struct opregion_acpi
*)(base
+ OPREGION_ACPI_OFFSET
);
901 if (mboxes
& MBOX_SWSCI
) {
902 DRM_DEBUG_DRIVER("SWSCI supported\n");
903 opregion
->swsci
= (struct opregion_swsci
*)(base
+ OPREGION_SWSCI_OFFSET
);
906 if (mboxes
& MBOX_ASLE
) {
907 DRM_DEBUG_DRIVER("ASLE supported\n");
908 opregion
->asle
= (struct opregion_asle
*)(base
+ OPREGION_ASLE_OFFSET
);
910 iowrite32(ASLE_ARDY_NOT_READY
, &opregion
->asle
->ardy
);