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 <acpi/video.h>
32 #include <drm/i915_drm.h>
34 #include "intel_drv.h"
38 #define PCI_SWSCI 0xe8
39 #define PCI_SWSCI_SCISEL (1 << 15)
40 #define PCI_SWSCI_GSSCIE (1 << 0)
42 #define OPREGION_HEADER_OFFSET 0
43 #define OPREGION_ACPI_OFFSET 0x100
44 #define ACPI_CLID 0x01ac /* current lid state indicator */
45 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
46 #define OPREGION_SWSCI_OFFSET 0x200
47 #define OPREGION_ASLE_OFFSET 0x300
48 #define OPREGION_VBT_OFFSET 0x400
50 #define OPREGION_SIGNATURE "IntelGraphicsMem"
51 #define MBOX_ACPI (1<<0)
52 #define MBOX_SWSCI (1<<1)
53 #define MBOX_ASLE (1<<2)
54 #define MBOX_ASLE_EXT (1<<4)
56 struct opregion_header
{
70 /* OpRegion mailbox #1: public ACPI methods */
71 struct opregion_acpi
{
72 u32 drdy
; /* driver readiness */
73 u32 csts
; /* notification status */
74 u32 cevt
; /* current event */
76 u32 didl
[8]; /* supported display devices ID list */
77 u32 cpdl
[8]; /* currently presented display list */
78 u32 cadl
[8]; /* currently active display list */
79 u32 nadl
[8]; /* next active devices list */
80 u32 aslp
; /* ASL sleep time-out */
81 u32 tidx
; /* toggle table index */
82 u32 chpd
; /* current hotplug enable indicator */
83 u32 clid
; /* current lid state*/
84 u32 cdck
; /* current docking state */
85 u32 sxsw
; /* Sx state resume */
86 u32 evts
; /* ASL supported events */
87 u32 cnot
; /* current OS notification */
88 u32 nrdy
; /* driver status */
89 u32 did2
[7]; /* extended supported display devices ID list */
90 u32 cpd2
[7]; /* extended attached display devices list */
94 /* OpRegion mailbox #2: SWSCI */
95 struct opregion_swsci
{
96 u32 scic
; /* SWSCI command|status|data */
97 u32 parm
; /* command parameters */
98 u32 dslp
; /* driver sleep time-out */
102 /* OpRegion mailbox #3: ASLE */
103 struct opregion_asle
{
104 u32 ardy
; /* driver readiness */
105 u32 aslc
; /* ASLE interrupt command */
106 u32 tche
; /* technology enabled indicator */
107 u32 alsi
; /* current ALS illuminance reading */
108 u32 bclp
; /* backlight brightness to set */
109 u32 pfit
; /* panel fitting state */
110 u32 cblv
; /* current brightness level */
111 u16 bclm
[20]; /* backlight level duty cycle mapping table */
112 u32 cpfm
; /* current panel fitting mode */
113 u32 epfm
; /* enabled panel fitting modes */
114 u8 plut
[74]; /* panel LUT and identifier */
115 u32 pfmb
; /* PWM freq and min brightness */
116 u32 cddv
; /* color correction default values */
117 u32 pcft
; /* power conservation features */
118 u32 srot
; /* supported rotation angles */
119 u32 iuer
; /* IUER events */
126 /* Driver readiness indicator */
127 #define ASLE_ARDY_READY (1 << 0)
128 #define ASLE_ARDY_NOT_READY (0 << 0)
130 /* ASLE Interrupt Command (ASLC) bits */
131 #define ASLC_SET_ALS_ILLUM (1 << 0)
132 #define ASLC_SET_BACKLIGHT (1 << 1)
133 #define ASLC_SET_PFIT (1 << 2)
134 #define ASLC_SET_PWM_FREQ (1 << 3)
135 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
136 #define ASLC_BUTTON_ARRAY (1 << 5)
137 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
138 #define ASLC_DOCKING_INDICATOR (1 << 7)
139 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
140 #define ASLC_REQ_MSK 0x1ff
142 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
143 #define ASLC_BACKLIGHT_FAILED (1 << 12)
144 #define ASLC_PFIT_FAILED (1 << 14)
145 #define ASLC_PWM_FREQ_FAILED (1 << 16)
146 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
147 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
148 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
149 #define ASLC_DOCKING_FAILED (1 << 24)
150 #define ASLC_ISCT_STATE_FAILED (1 << 26)
152 /* Technology enabled indicator */
153 #define ASLE_TCHE_ALS_EN (1 << 0)
154 #define ASLE_TCHE_BLC_EN (1 << 1)
155 #define ASLE_TCHE_PFIT_EN (1 << 2)
156 #define ASLE_TCHE_PFMB_EN (1 << 3)
158 /* ASLE backlight brightness to set */
159 #define ASLE_BCLP_VALID (1<<31)
160 #define ASLE_BCLP_MSK (~(1<<31))
162 /* ASLE panel fitting request */
163 #define ASLE_PFIT_VALID (1<<31)
164 #define ASLE_PFIT_CENTER (1<<0)
165 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
166 #define ASLE_PFIT_STRETCH_GFX (1<<2)
168 /* PWM frequency and minimum brightness */
169 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
170 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
171 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
172 #define ASLE_PFMB_PWM_VALID (1<<31)
174 #define ASLE_CBLV_VALID (1<<31)
177 #define ASLE_IUER_DOCKING (1 << 7)
178 #define ASLE_IUER_CONVERTIBLE (1 << 6)
179 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
180 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
181 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
182 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
183 #define ASLE_IUER_POWER_BTN (1 << 0)
185 /* Software System Control Interrupt (SWSCI) */
186 #define SWSCI_SCIC_INDICATOR (1 << 0)
187 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
188 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
189 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
190 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
191 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
192 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
193 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
194 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
195 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
197 #define SWSCI_FUNCTION_CODE(main, sub) \
198 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
199 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
201 /* SWSCI: Get BIOS Data (GBDA) */
203 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
204 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
205 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
206 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
207 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
208 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
209 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
211 /* SWSCI: System BIOS Callbacks (SBCB) */
213 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
214 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
215 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
216 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
217 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
218 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
219 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
220 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
221 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
222 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
223 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
224 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
225 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
226 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
227 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
228 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
230 #define ACPI_OTHER_OUTPUT (0<<8)
231 #define ACPI_VGA_OUTPUT (1<<8)
232 #define ACPI_TV_OUTPUT (2<<8)
233 #define ACPI_DIGITAL_OUTPUT (3<<8)
234 #define ACPI_LVDS_OUTPUT (4<<8)
236 #define MAX_DSLP 1500
239 static int swsci(struct drm_device
*dev
, u32 function
, u32 parm
, u32
*parm_out
)
241 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
242 struct opregion_swsci __iomem
*swsci
= dev_priv
->opregion
.swsci
;
243 u32 main_function
, sub_function
, scic
;
250 main_function
= (function
& SWSCI_SCIC_MAIN_FUNCTION_MASK
) >>
251 SWSCI_SCIC_MAIN_FUNCTION_SHIFT
;
252 sub_function
= (function
& SWSCI_SCIC_SUB_FUNCTION_MASK
) >>
253 SWSCI_SCIC_SUB_FUNCTION_SHIFT
;
255 /* Check if we can call the function. See swsci_setup for details. */
256 if (main_function
== SWSCI_SBCB
) {
257 if ((dev_priv
->opregion
.swsci_sbcb_sub_functions
&
258 (1 << sub_function
)) == 0)
260 } else if (main_function
== SWSCI_GBDA
) {
261 if ((dev_priv
->opregion
.swsci_gbda_sub_functions
&
262 (1 << sub_function
)) == 0)
266 /* Driver sleep timeout in ms. */
267 dslp
= ioread32(&swsci
->dslp
);
269 /* The spec says 2ms should be the default, but it's too small
270 * for some machines. */
272 } else if (dslp
> MAX_DSLP
) {
273 /* Hey bios, trust must be earned. */
274 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
275 "using %u ms instead\n", dslp
, MAX_DSLP
);
279 /* The spec tells us to do this, but we are the only user... */
280 scic
= ioread32(&swsci
->scic
);
281 if (scic
& SWSCI_SCIC_INDICATOR
) {
282 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
286 scic
= function
| SWSCI_SCIC_INDICATOR
;
288 iowrite32(parm
, &swsci
->parm
);
289 iowrite32(scic
, &swsci
->scic
);
291 /* Ensure SCI event is selected and event trigger is cleared. */
292 pci_read_config_word(dev
->pdev
, PCI_SWSCI
, &pci_swsci
);
293 if (!(pci_swsci
& PCI_SWSCI_SCISEL
) || (pci_swsci
& PCI_SWSCI_GSSCIE
)) {
294 pci_swsci
|= PCI_SWSCI_SCISEL
;
295 pci_swsci
&= ~PCI_SWSCI_GSSCIE
;
296 pci_write_config_word(dev
->pdev
, PCI_SWSCI
, pci_swsci
);
299 /* Use event trigger to tell bios to check the mail. */
300 pci_swsci
|= PCI_SWSCI_GSSCIE
;
301 pci_write_config_word(dev
->pdev
, PCI_SWSCI
, pci_swsci
);
303 /* Poll for the result. */
304 #define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0)
305 if (wait_for(C
, dslp
)) {
306 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
310 scic
= (scic
& SWSCI_SCIC_EXIT_STATUS_MASK
) >>
311 SWSCI_SCIC_EXIT_STATUS_SHIFT
;
313 /* Note: scic == 0 is an error! */
314 if (scic
!= SWSCI_SCIC_EXIT_STATUS_SUCCESS
) {
315 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic
);
320 *parm_out
= ioread32(&swsci
->parm
);
327 #define DISPLAY_TYPE_CRT 0
328 #define DISPLAY_TYPE_TV 1
329 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
330 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
332 int intel_opregion_notify_encoder(struct intel_encoder
*intel_encoder
,
335 struct drm_device
*dev
= intel_encoder
->base
.dev
;
340 /* don't care about old stuff for now */
344 port
= intel_ddi_get_encoder_port(intel_encoder
);
345 if (port
== PORT_E
) {
355 switch (intel_encoder
->type
) {
356 case INTEL_OUTPUT_ANALOG
:
357 type
= DISPLAY_TYPE_CRT
;
359 case INTEL_OUTPUT_UNKNOWN
:
360 case INTEL_OUTPUT_DISPLAYPORT
:
361 case INTEL_OUTPUT_HDMI
:
362 case INTEL_OUTPUT_DP_MST
:
363 type
= DISPLAY_TYPE_EXTERNAL_FLAT_PANEL
;
365 case INTEL_OUTPUT_EDP
:
366 type
= DISPLAY_TYPE_INTERNAL_FLAT_PANEL
;
369 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
370 intel_encoder
->type
);
374 parm
|= type
<< (16 + port
* 3);
376 return swsci(dev
, SWSCI_SBCB_DISPLAY_POWER_STATE
, parm
, NULL
);
379 static const struct {
380 pci_power_t pci_power_state
;
382 } power_state_map
[] = {
387 { PCI_D3cold
, 0x04 },
390 int intel_opregion_notify_adapter(struct drm_device
*dev
, pci_power_t state
)
397 for (i
= 0; i
< ARRAY_SIZE(power_state_map
); i
++) {
398 if (state
== power_state_map
[i
].pci_power_state
)
399 return swsci(dev
, SWSCI_SBCB_ADAPTER_POWER_STATE
,
400 power_state_map
[i
].parm
, NULL
);
406 static u32
asle_set_backlight(struct drm_device
*dev
, u32 bclp
)
408 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
409 struct intel_connector
*intel_connector
;
410 struct opregion_asle __iomem
*asle
= dev_priv
->opregion
.asle
;
412 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp
);
414 if (acpi_video_get_backlight_type() == acpi_backlight_native
) {
415 DRM_DEBUG_KMS("opregion backlight request ignored\n");
419 if (!(bclp
& ASLE_BCLP_VALID
))
420 return ASLC_BACKLIGHT_FAILED
;
422 bclp
&= ASLE_BCLP_MSK
;
424 return ASLC_BACKLIGHT_FAILED
;
426 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
429 * Update backlight on all connectors that support backlight (usually
432 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp
);
433 list_for_each_entry(intel_connector
, &dev
->mode_config
.connector_list
, base
.head
)
434 intel_panel_set_backlight_acpi(intel_connector
, bclp
, 255);
435 iowrite32(DIV_ROUND_UP(bclp
* 100, 255) | ASLE_CBLV_VALID
, &asle
->cblv
);
437 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
443 static u32
asle_set_als_illum(struct drm_device
*dev
, u32 alsi
)
445 /* alsi is the current ALS reading in lux. 0 indicates below sensor
446 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
447 DRM_DEBUG_DRIVER("Illum is not supported\n");
448 return ASLC_ALS_ILLUM_FAILED
;
451 static u32
asle_set_pwm_freq(struct drm_device
*dev
, u32 pfmb
)
453 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
454 return ASLC_PWM_FREQ_FAILED
;
457 static u32
asle_set_pfit(struct drm_device
*dev
, u32 pfit
)
459 /* Panel fitting is currently controlled by the X code, so this is a
460 noop until modesetting support works fully */
461 DRM_DEBUG_DRIVER("Pfit is not supported\n");
462 return ASLC_PFIT_FAILED
;
465 static u32
asle_set_supported_rotation_angles(struct drm_device
*dev
, u32 srot
)
467 DRM_DEBUG_DRIVER("SROT is not supported\n");
468 return ASLC_ROTATION_ANGLES_FAILED
;
471 static u32
asle_set_button_array(struct drm_device
*dev
, u32 iuer
)
474 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
475 if (iuer
& ASLE_IUER_ROTATION_LOCK_BTN
)
476 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
477 if (iuer
& ASLE_IUER_VOLUME_DOWN_BTN
)
478 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
479 if (iuer
& ASLE_IUER_VOLUME_UP_BTN
)
480 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
481 if (iuer
& ASLE_IUER_WINDOWS_BTN
)
482 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
483 if (iuer
& ASLE_IUER_POWER_BTN
)
484 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
486 return ASLC_BUTTON_ARRAY_FAILED
;
489 static u32
asle_set_convertible(struct drm_device
*dev
, u32 iuer
)
491 if (iuer
& ASLE_IUER_CONVERTIBLE
)
492 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
494 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
496 return ASLC_CONVERTIBLE_FAILED
;
499 static u32
asle_set_docking(struct drm_device
*dev
, u32 iuer
)
501 if (iuer
& ASLE_IUER_DOCKING
)
502 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
504 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
506 return ASLC_DOCKING_FAILED
;
509 static u32
asle_isct_state(struct drm_device
*dev
)
511 DRM_DEBUG_DRIVER("ISCT is not supported\n");
512 return ASLC_ISCT_STATE_FAILED
;
515 static void asle_work(struct work_struct
*work
)
517 struct intel_opregion
*opregion
=
518 container_of(work
, struct intel_opregion
, asle_work
);
519 struct drm_i915_private
*dev_priv
=
520 container_of(opregion
, struct drm_i915_private
, opregion
);
521 struct drm_device
*dev
= dev_priv
->dev
;
522 struct opregion_asle __iomem
*asle
= dev_priv
->opregion
.asle
;
529 aslc_req
= ioread32(&asle
->aslc
);
531 if (!(aslc_req
& ASLC_REQ_MSK
)) {
532 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
537 if (aslc_req
& ASLC_SET_ALS_ILLUM
)
538 aslc_stat
|= asle_set_als_illum(dev
, ioread32(&asle
->alsi
));
540 if (aslc_req
& ASLC_SET_BACKLIGHT
)
541 aslc_stat
|= asle_set_backlight(dev
, ioread32(&asle
->bclp
));
543 if (aslc_req
& ASLC_SET_PFIT
)
544 aslc_stat
|= asle_set_pfit(dev
, ioread32(&asle
->pfit
));
546 if (aslc_req
& ASLC_SET_PWM_FREQ
)
547 aslc_stat
|= asle_set_pwm_freq(dev
, ioread32(&asle
->pfmb
));
549 if (aslc_req
& ASLC_SUPPORTED_ROTATION_ANGLES
)
550 aslc_stat
|= asle_set_supported_rotation_angles(dev
,
551 ioread32(&asle
->srot
));
553 if (aslc_req
& ASLC_BUTTON_ARRAY
)
554 aslc_stat
|= asle_set_button_array(dev
, ioread32(&asle
->iuer
));
556 if (aslc_req
& ASLC_CONVERTIBLE_INDICATOR
)
557 aslc_stat
|= asle_set_convertible(dev
, ioread32(&asle
->iuer
));
559 if (aslc_req
& ASLC_DOCKING_INDICATOR
)
560 aslc_stat
|= asle_set_docking(dev
, ioread32(&asle
->iuer
));
562 if (aslc_req
& ASLC_ISCT_STATE_CHANGE
)
563 aslc_stat
|= asle_isct_state(dev
);
565 iowrite32(aslc_stat
, &asle
->aslc
);
568 void intel_opregion_asle_intr(struct drm_device
*dev
)
570 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
572 if (dev_priv
->opregion
.asle
)
573 schedule_work(&dev_priv
->opregion
.asle_work
);
576 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
577 #define ACPI_EV_LID (1<<1)
578 #define ACPI_EV_DOCK (1<<2)
580 static struct intel_opregion
*system_opregion
;
582 static int intel_opregion_video_event(struct notifier_block
*nb
,
583 unsigned long val
, void *data
)
585 /* The only video events relevant to opregion are 0x80. These indicate
586 either a docking event, lid switch or display switch request. In
587 Linux, these are handled by the dock, button and video drivers.
590 struct opregion_acpi __iomem
*acpi
;
591 struct acpi_bus_event
*event
= data
;
594 if (strcmp(event
->device_class
, ACPI_VIDEO_CLASS
) != 0)
597 if (!system_opregion
)
600 acpi
= system_opregion
->acpi
;
602 if (event
->type
== 0x80 &&
603 (ioread32(&acpi
->cevt
) & 1) == 0)
606 iowrite32(0, &acpi
->csts
);
611 static struct notifier_block intel_opregion_notifier
= {
612 .notifier_call
= intel_opregion_video_event
,
616 * Initialise the DIDL field in opregion. This passes a list of devices to
617 * the firmware. Values are defined by section B.4.2 of the ACPI specification
621 static u32
get_did(struct intel_opregion
*opregion
, int i
)
625 if (i
< ARRAY_SIZE(opregion
->acpi
->didl
)) {
626 did
= ioread32(&opregion
->acpi
->didl
[i
]);
628 i
-= ARRAY_SIZE(opregion
->acpi
->didl
);
630 if (WARN_ON(i
>= ARRAY_SIZE(opregion
->acpi
->did2
)))
633 did
= ioread32(&opregion
->acpi
->did2
[i
]);
639 static void set_did(struct intel_opregion
*opregion
, int i
, u32 val
)
641 if (i
< ARRAY_SIZE(opregion
->acpi
->didl
)) {
642 iowrite32(val
, &opregion
->acpi
->didl
[i
]);
644 i
-= ARRAY_SIZE(opregion
->acpi
->didl
);
646 if (WARN_ON(i
>= ARRAY_SIZE(opregion
->acpi
->did2
)))
649 iowrite32(val
, &opregion
->acpi
->did2
[i
]);
653 static void intel_didl_outputs(struct drm_device
*dev
)
655 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
656 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
657 struct drm_connector
*connector
;
659 struct acpi_device
*acpi_dev
, *acpi_cdev
, *acpi_video_bus
= NULL
;
660 unsigned long long device_id
;
662 u32 temp
, max_outputs
;
665 handle
= ACPI_HANDLE(&dev
->pdev
->dev
);
666 if (!handle
|| acpi_bus_get_device(handle
, &acpi_dev
))
669 if (acpi_is_video_device(handle
))
670 acpi_video_bus
= acpi_dev
;
672 list_for_each_entry(acpi_cdev
, &acpi_dev
->children
, node
) {
673 if (acpi_is_video_device(acpi_cdev
->handle
)) {
674 acpi_video_bus
= acpi_cdev
;
680 if (!acpi_video_bus
) {
681 DRM_ERROR("No ACPI video bus found\n");
686 * In theory, did2, the extended didl, gets added at opregion version
687 * 3.0. In practice, however, we're supposed to set it for earlier
688 * versions as well, since a BIOS that doesn't understand did2 should
689 * not look at it anyway. Use a variable so we can tweak this if a need
692 max_outputs
= ARRAY_SIZE(opregion
->acpi
->didl
) +
693 ARRAY_SIZE(opregion
->acpi
->did2
);
695 list_for_each_entry(acpi_cdev
, &acpi_video_bus
->children
, node
) {
696 if (i
>= max_outputs
) {
697 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
701 status
= acpi_evaluate_integer(acpi_cdev
->handle
, "_ADR",
703 if (ACPI_SUCCESS(status
)) {
706 set_did(opregion
, i
++, (u32
)(device_id
& 0x0f0f));
711 DRM_DEBUG_KMS("%d outputs detected\n", i
);
713 /* If fewer than max outputs, the list must be null terminated */
715 set_did(opregion
, i
, 0);
720 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
721 int output_type
= ACPI_OTHER_OUTPUT
;
722 if (i
>= max_outputs
) {
723 DRM_DEBUG_KMS("More than %u outputs in connector list\n",
727 switch (connector
->connector_type
) {
728 case DRM_MODE_CONNECTOR_VGA
:
729 case DRM_MODE_CONNECTOR_DVIA
:
730 output_type
= ACPI_VGA_OUTPUT
;
732 case DRM_MODE_CONNECTOR_Composite
:
733 case DRM_MODE_CONNECTOR_SVIDEO
:
734 case DRM_MODE_CONNECTOR_Component
:
735 case DRM_MODE_CONNECTOR_9PinDIN
:
736 output_type
= ACPI_TV_OUTPUT
;
738 case DRM_MODE_CONNECTOR_DVII
:
739 case DRM_MODE_CONNECTOR_DVID
:
740 case DRM_MODE_CONNECTOR_DisplayPort
:
741 case DRM_MODE_CONNECTOR_HDMIA
:
742 case DRM_MODE_CONNECTOR_HDMIB
:
743 output_type
= ACPI_DIGITAL_OUTPUT
;
745 case DRM_MODE_CONNECTOR_LVDS
:
746 output_type
= ACPI_LVDS_OUTPUT
;
749 temp
= get_did(opregion
, i
);
750 set_did(opregion
, i
, temp
| (1 << 31) | output_type
| i
);
756 static void intel_setup_cadls(struct drm_device
*dev
)
758 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
759 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
763 /* Initialize the CADL field by duplicating the DIDL values.
764 * Technically, this is not always correct as display outputs may exist,
765 * but not active. This initialization is necessary for some Clevo
766 * laptops that check this field before processing the brightness and
767 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
768 * there are less than eight devices. */
770 disp_id
= get_did(opregion
, i
);
771 iowrite32(disp_id
, &opregion
->acpi
->cadl
[i
]);
772 } while (++i
< 8 && disp_id
!= 0);
775 void intel_opregion_init(struct drm_device
*dev
)
777 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
778 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
780 if (!opregion
->header
)
783 if (opregion
->acpi
) {
784 intel_didl_outputs(dev
);
785 intel_setup_cadls(dev
);
787 /* Notify BIOS we are ready to handle ACPI video ext notifs.
788 * Right now, all the events are handled by the ACPI video module.
789 * We don't actually need to do anything with them. */
790 iowrite32(0, &opregion
->acpi
->csts
);
791 iowrite32(1, &opregion
->acpi
->drdy
);
793 system_opregion
= opregion
;
794 register_acpi_notifier(&intel_opregion_notifier
);
797 if (opregion
->asle
) {
798 iowrite32(ASLE_TCHE_BLC_EN
, &opregion
->asle
->tche
);
799 iowrite32(ASLE_ARDY_READY
, &opregion
->asle
->ardy
);
803 void intel_opregion_fini(struct drm_device
*dev
)
805 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
806 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
808 if (!opregion
->header
)
812 iowrite32(ASLE_ARDY_NOT_READY
, &opregion
->asle
->ardy
);
814 cancel_work_sync(&dev_priv
->opregion
.asle_work
);
816 if (opregion
->acpi
) {
817 iowrite32(0, &opregion
->acpi
->drdy
);
819 system_opregion
= NULL
;
820 unregister_acpi_notifier(&intel_opregion_notifier
);
823 /* just clear all opregion memory pointers now */
824 iounmap(opregion
->header
);
825 opregion
->header
= NULL
;
826 opregion
->acpi
= NULL
;
827 opregion
->swsci
= NULL
;
828 opregion
->asle
= NULL
;
829 opregion
->vbt
= NULL
;
830 opregion
->lid_state
= NULL
;
833 static void swsci_setup(struct drm_device
*dev
)
835 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
836 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
837 bool requested_callbacks
= false;
840 /* Sub-function code 0 is okay, let's allow them. */
841 opregion
->swsci_gbda_sub_functions
= 1;
842 opregion
->swsci_sbcb_sub_functions
= 1;
844 /* We use GBDA to ask for supported GBDA calls. */
845 if (swsci(dev
, SWSCI_GBDA_SUPPORTED_CALLS
, 0, &tmp
) == 0) {
846 /* make the bits match the sub-function codes */
848 opregion
->swsci_gbda_sub_functions
|= tmp
;
852 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
853 * must not call interfaces that are not specifically requested by the
856 if (swsci(dev
, SWSCI_GBDA_REQUESTED_CALLBACKS
, 0, &tmp
) == 0) {
857 /* here, the bits already match sub-function codes */
858 opregion
->swsci_sbcb_sub_functions
|= tmp
;
859 requested_callbacks
= true;
863 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
864 * the callback is _requested_. But we still can't call interfaces that
867 if (swsci(dev
, SWSCI_SBCB_SUPPORTED_CALLBACKS
, 0, &tmp
) == 0) {
868 /* make the bits match the sub-function codes */
869 u32 low
= tmp
& 0x7ff;
870 u32 high
= tmp
& ~0xfff; /* bit 11 is reserved */
871 tmp
= (high
<< 4) | (low
<< 1) | 1;
873 /* best guess what to do with supported wrt requested */
874 if (requested_callbacks
) {
875 u32 req
= opregion
->swsci_sbcb_sub_functions
;
876 if ((req
& tmp
) != req
)
877 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req
, tmp
);
878 /* XXX: for now, trust the requested callbacks */
879 /* opregion->swsci_sbcb_sub_functions &= tmp; */
881 opregion
->swsci_sbcb_sub_functions
|= tmp
;
885 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
886 opregion
->swsci_gbda_sub_functions
,
887 opregion
->swsci_sbcb_sub_functions
);
889 #else /* CONFIG_ACPI */
890 static inline void swsci_setup(struct drm_device
*dev
) {}
891 #endif /* CONFIG_ACPI */
893 int intel_opregion_setup(struct drm_device
*dev
)
895 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
896 struct intel_opregion
*opregion
= &dev_priv
->opregion
;
899 char buf
[sizeof(OPREGION_SIGNATURE
)];
902 BUILD_BUG_ON(sizeof(struct opregion_header
) != 0x100);
903 BUILD_BUG_ON(sizeof(struct opregion_acpi
) != 0x100);
904 BUILD_BUG_ON(sizeof(struct opregion_swsci
) != 0x100);
905 BUILD_BUG_ON(sizeof(struct opregion_asle
) != 0x100);
907 pci_read_config_dword(dev
->pdev
, PCI_ASLS
, &asls
);
908 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls
);
910 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
915 INIT_WORK(&opregion
->asle_work
, asle_work
);
918 base
= acpi_os_ioremap(asls
, OPREGION_SIZE
);
922 memcpy_fromio(buf
, base
, sizeof(buf
));
924 if (memcmp(buf
, OPREGION_SIGNATURE
, 16)) {
925 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
929 opregion
->header
= base
;
930 opregion
->vbt
= base
+ OPREGION_VBT_OFFSET
;
932 opregion
->lid_state
= base
+ ACPI_CLID
;
934 mboxes
= ioread32(&opregion
->header
->mboxes
);
935 if (mboxes
& MBOX_ACPI
) {
936 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
937 opregion
->acpi
= base
+ OPREGION_ACPI_OFFSET
;
940 if (mboxes
& MBOX_SWSCI
) {
941 DRM_DEBUG_DRIVER("SWSCI supported\n");
942 opregion
->swsci
= base
+ OPREGION_SWSCI_OFFSET
;
945 if (mboxes
& MBOX_ASLE
) {
946 DRM_DEBUG_DRIVER("ASLE supported\n");
947 opregion
->asle
= base
+ OPREGION_ASLE_OFFSET
;
949 iowrite32(ASLE_ARDY_NOT_READY
, &opregion
->asle
->ardy
);