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)
236 * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices
237 * Attached to the Display Adapter).
239 #define ACPI_DISPLAY_INDEX_SHIFT 0
240 #define ACPI_DISPLAY_INDEX_MASK (0xf << 0)
241 #define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT 4
242 #define ACPI_DISPLAY_PORT_ATTACHMENT_MASK (0xf << 4)
243 #define ACPI_DISPLAY_TYPE_SHIFT 8
244 #define ACPI_DISPLAY_TYPE_MASK (0xf << 8)
245 #define ACPI_DISPLAY_TYPE_OTHER (0 << 8)
246 #define ACPI_DISPLAY_TYPE_VGA (1 << 8)
247 #define ACPI_DISPLAY_TYPE_TV (2 << 8)
248 #define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL (3 << 8)
249 #define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL (4 << 8)
250 #define ACPI_VENDOR_SPECIFIC_SHIFT 12
251 #define ACPI_VENDOR_SPECIFIC_MASK (0xf << 12)
252 #define ACPI_BIOS_CAN_DETECT (1 << 16)
253 #define ACPI_DEPENDS_ON_VGA (1 << 17)
254 #define ACPI_PIPE_ID_SHIFT 18
255 #define ACPI_PIPE_ID_MASK (7 << 18)
256 #define ACPI_DEVICE_ID_SCHEME (1 << 31)
258 #define MAX_DSLP 1500
260 static int swsci(struct drm_i915_private *dev_priv,
261 u32 function, u32 parm, u32 *parm_out)
263 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
264 struct pci_dev *pdev = dev_priv->drm.pdev;
265 u32 main_function, sub_function, scic;
272 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
273 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
274 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
275 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
277 /* Check if we can call the function. See swsci_setup for details. */
278 if (main_function == SWSCI_SBCB) {
279 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
280 (1 << sub_function)) == 0)
282 } else if (main_function == SWSCI_GBDA) {
283 if ((dev_priv->opregion.swsci_gbda_sub_functions &
284 (1 << sub_function)) == 0)
288 /* Driver sleep timeout in ms. */
291 /* The spec says 2ms should be the default, but it's too small
292 * for some machines. */
294 } else if (dslp > MAX_DSLP) {
295 /* Hey bios, trust must be earned. */
296 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
297 "using %u ms instead\n", dslp, MAX_DSLP);
301 /* The spec tells us to do this, but we are the only user... */
303 if (scic & SWSCI_SCIC_INDICATOR) {
304 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
308 scic = function | SWSCI_SCIC_INDICATOR;
313 /* Ensure SCI event is selected and event trigger is cleared. */
314 pci_read_config_word(pdev, SWSCI, &swsci_val);
315 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
316 swsci_val |= SWSCI_SCISEL;
317 swsci_val &= ~SWSCI_GSSCIE;
318 pci_write_config_word(pdev, SWSCI, swsci_val);
321 /* Use event trigger to tell bios to check the mail. */
322 swsci_val |= SWSCI_GSSCIE;
323 pci_write_config_word(pdev, SWSCI, swsci_val);
325 /* Poll for the result. */
326 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
327 if (wait_for(C, dslp)) {
328 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
332 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
333 SWSCI_SCIC_EXIT_STATUS_SHIFT;
335 /* Note: scic == 0 is an error! */
336 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
337 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
342 *parm_out = swsci->parm;
349 #define DISPLAY_TYPE_CRT 0
350 #define DISPLAY_TYPE_TV 1
351 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
352 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
354 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
357 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
362 /* don't care about old stuff for now */
363 if (!HAS_DDI(dev_priv))
366 if (intel_encoder->type == INTEL_OUTPUT_DSI)
369 port = intel_ddi_get_encoder_port(intel_encoder);
371 if (port == PORT_E) {
381 switch (intel_encoder->type) {
382 case INTEL_OUTPUT_ANALOG:
383 type = DISPLAY_TYPE_CRT;
385 case INTEL_OUTPUT_UNKNOWN:
386 case INTEL_OUTPUT_DP:
387 case INTEL_OUTPUT_HDMI:
388 case INTEL_OUTPUT_DP_MST:
389 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
391 case INTEL_OUTPUT_EDP:
392 case INTEL_OUTPUT_DSI:
393 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
396 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
397 intel_encoder->type);
401 parm |= type << (16 + port * 3);
403 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
406 static const struct {
407 pci_power_t pci_power_state;
409 } power_state_map[] = {
414 { PCI_D3cold, 0x04 },
417 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
422 if (!HAS_DDI(dev_priv))
425 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
426 if (state == power_state_map[i].pci_power_state)
427 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
428 power_state_map[i].parm, NULL);
434 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
436 struct intel_connector *connector;
437 struct drm_connector_list_iter conn_iter;
438 struct opregion_asle *asle = dev_priv->opregion.asle;
439 struct drm_device *dev = &dev_priv->drm;
441 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
443 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
444 DRM_DEBUG_KMS("opregion backlight request ignored\n");
448 if (!(bclp & ASLE_BCLP_VALID))
449 return ASLC_BACKLIGHT_FAILED;
451 bclp &= ASLE_BCLP_MSK;
453 return ASLC_BACKLIGHT_FAILED;
455 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
458 * Update backlight on all connectors that support backlight (usually
461 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
462 drm_connector_list_iter_begin(dev, &conn_iter);
463 for_each_intel_connector_iter(connector, &conn_iter)
464 intel_panel_set_backlight_acpi(connector->base.state, bclp, 255);
465 drm_connector_list_iter_end(&conn_iter);
466 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
468 drm_modeset_unlock(&dev->mode_config.connection_mutex);
474 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
476 /* alsi is the current ALS reading in lux. 0 indicates below sensor
477 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
478 DRM_DEBUG_DRIVER("Illum is not supported\n");
479 return ASLC_ALS_ILLUM_FAILED;
482 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
484 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
485 return ASLC_PWM_FREQ_FAILED;
488 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
490 /* Panel fitting is currently controlled by the X code, so this is a
491 noop until modesetting support works fully */
492 DRM_DEBUG_DRIVER("Pfit is not supported\n");
493 return ASLC_PFIT_FAILED;
496 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
498 DRM_DEBUG_DRIVER("SROT is not supported\n");
499 return ASLC_ROTATION_ANGLES_FAILED;
502 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
505 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
506 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
507 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
508 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
509 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
510 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
511 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
512 if (iuer & ASLE_IUER_WINDOWS_BTN)
513 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
514 if (iuer & ASLE_IUER_POWER_BTN)
515 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
517 return ASLC_BUTTON_ARRAY_FAILED;
520 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
522 if (iuer & ASLE_IUER_CONVERTIBLE)
523 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
525 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
527 return ASLC_CONVERTIBLE_FAILED;
530 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
532 if (iuer & ASLE_IUER_DOCKING)
533 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
535 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
537 return ASLC_DOCKING_FAILED;
540 static u32 asle_isct_state(struct drm_i915_private *dev_priv)
542 DRM_DEBUG_DRIVER("ISCT is not supported\n");
543 return ASLC_ISCT_STATE_FAILED;
546 static void asle_work(struct work_struct *work)
548 struct intel_opregion *opregion =
549 container_of(work, struct intel_opregion, asle_work);
550 struct drm_i915_private *dev_priv =
551 container_of(opregion, struct drm_i915_private, opregion);
552 struct opregion_asle *asle = dev_priv->opregion.asle;
559 aslc_req = asle->aslc;
561 if (!(aslc_req & ASLC_REQ_MSK)) {
562 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
567 if (aslc_req & ASLC_SET_ALS_ILLUM)
568 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
570 if (aslc_req & ASLC_SET_BACKLIGHT)
571 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
573 if (aslc_req & ASLC_SET_PFIT)
574 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
576 if (aslc_req & ASLC_SET_PWM_FREQ)
577 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
579 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
580 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
583 if (aslc_req & ASLC_BUTTON_ARRAY)
584 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
586 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
587 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
589 if (aslc_req & ASLC_DOCKING_INDICATOR)
590 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
592 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
593 aslc_stat |= asle_isct_state(dev_priv);
595 asle->aslc = aslc_stat;
598 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
600 if (dev_priv->opregion.asle)
601 schedule_work(&dev_priv->opregion.asle_work);
604 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
605 #define ACPI_EV_LID (1<<1)
606 #define ACPI_EV_DOCK (1<<2)
608 static struct intel_opregion *system_opregion;
610 static int intel_opregion_video_event(struct notifier_block *nb,
611 unsigned long val, void *data)
613 /* The only video events relevant to opregion are 0x80. These indicate
614 either a docking event, lid switch or display switch request. In
615 Linux, these are handled by the dock, button and video drivers.
618 struct acpi_bus_event *event = data;
619 struct opregion_acpi *acpi;
622 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
625 if (!system_opregion)
628 acpi = system_opregion->acpi;
630 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
638 static struct notifier_block intel_opregion_notifier = {
639 .notifier_call = intel_opregion_video_event,
643 * Initialise the DIDL field in opregion. This passes a list of devices to
644 * the firmware. Values are defined by section B.4.2 of the ACPI specification
648 static void set_did(struct intel_opregion *opregion, int i, u32 val)
650 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
651 opregion->acpi->didl[i] = val;
653 i -= ARRAY_SIZE(opregion->acpi->didl);
655 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
658 opregion->acpi->did2[i] = val;
662 static u32 acpi_display_type(struct intel_connector *connector)
666 switch (connector->base.connector_type) {
667 case DRM_MODE_CONNECTOR_VGA:
668 case DRM_MODE_CONNECTOR_DVIA:
669 display_type = ACPI_DISPLAY_TYPE_VGA;
671 case DRM_MODE_CONNECTOR_Composite:
672 case DRM_MODE_CONNECTOR_SVIDEO:
673 case DRM_MODE_CONNECTOR_Component:
674 case DRM_MODE_CONNECTOR_9PinDIN:
675 case DRM_MODE_CONNECTOR_TV:
676 display_type = ACPI_DISPLAY_TYPE_TV;
678 case DRM_MODE_CONNECTOR_DVII:
679 case DRM_MODE_CONNECTOR_DVID:
680 case DRM_MODE_CONNECTOR_DisplayPort:
681 case DRM_MODE_CONNECTOR_HDMIA:
682 case DRM_MODE_CONNECTOR_HDMIB:
683 display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
685 case DRM_MODE_CONNECTOR_LVDS:
686 case DRM_MODE_CONNECTOR_eDP:
687 case DRM_MODE_CONNECTOR_DSI:
688 display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
690 case DRM_MODE_CONNECTOR_Unknown:
691 case DRM_MODE_CONNECTOR_VIRTUAL:
692 display_type = ACPI_DISPLAY_TYPE_OTHER;
695 MISSING_CASE(connector->base.connector_type);
696 display_type = ACPI_DISPLAY_TYPE_OTHER;
703 static void intel_didl_outputs(struct drm_i915_private *dev_priv)
705 struct intel_opregion *opregion = &dev_priv->opregion;
706 struct intel_connector *connector;
707 struct drm_connector_list_iter conn_iter;
708 int i = 0, max_outputs;
709 int display_index[16] = {};
712 * In theory, did2, the extended didl, gets added at opregion version
713 * 3.0. In practice, however, we're supposed to set it for earlier
714 * versions as well, since a BIOS that doesn't understand did2 should
715 * not look at it anyway. Use a variable so we can tweak this if a need
718 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
719 ARRAY_SIZE(opregion->acpi->did2);
721 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
722 for_each_intel_connector_iter(connector, &conn_iter) {
725 device_id = acpi_display_type(connector);
727 /* Use display type specific display index. */
728 type = (device_id & ACPI_DISPLAY_TYPE_MASK)
729 >> ACPI_DISPLAY_TYPE_SHIFT;
730 device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT;
732 connector->acpi_device_id = device_id;
734 set_did(opregion, i, device_id);
737 drm_connector_list_iter_end(&conn_iter);
739 DRM_DEBUG_KMS("%d outputs detected\n", i);
742 DRM_ERROR("More than %d outputs in connector list\n",
745 /* If fewer than max outputs, the list must be null terminated */
747 set_did(opregion, i, 0);
750 static void intel_setup_cadls(struct drm_i915_private *dev_priv)
752 struct intel_opregion *opregion = &dev_priv->opregion;
753 struct intel_connector *connector;
754 struct drm_connector_list_iter conn_iter;
758 * Initialize the CADL field from the connector device ids. This is
759 * essentially the same as copying from the DIDL. Technically, this is
760 * not always correct as display outputs may exist, but not active. This
761 * initialization is necessary for some Clevo laptops that check this
762 * field before processing the brightness and display switching hotkeys.
764 * Note that internal panels should be at the front of the connector
765 * list already, ensuring they're not left out.
767 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
768 for_each_intel_connector_iter(connector, &conn_iter) {
769 if (i >= ARRAY_SIZE(opregion->acpi->cadl))
771 opregion->acpi->cadl[i++] = connector->acpi_device_id;
773 drm_connector_list_iter_end(&conn_iter);
775 /* If fewer than 8 active devices, the list must be null terminated */
776 if (i < ARRAY_SIZE(opregion->acpi->cadl))
777 opregion->acpi->cadl[i] = 0;
780 void intel_opregion_register(struct drm_i915_private *dev_priv)
782 struct intel_opregion *opregion = &dev_priv->opregion;
784 if (!opregion->header)
787 if (opregion->acpi) {
788 intel_didl_outputs(dev_priv);
789 intel_setup_cadls(dev_priv);
791 /* Notify BIOS we are ready to handle ACPI video ext notifs.
792 * Right now, all the events are handled by the ACPI video module.
793 * We don't actually need to do anything with them. */
794 opregion->acpi->csts = 0;
795 opregion->acpi->drdy = 1;
797 system_opregion = opregion;
798 register_acpi_notifier(&intel_opregion_notifier);
801 if (opregion->asle) {
802 opregion->asle->tche = ASLE_TCHE_BLC_EN;
803 opregion->asle->ardy = ASLE_ARDY_READY;
807 void intel_opregion_unregister(struct drm_i915_private *dev_priv)
809 struct intel_opregion *opregion = &dev_priv->opregion;
811 if (!opregion->header)
815 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
817 cancel_work_sync(&dev_priv->opregion.asle_work);
819 if (opregion->acpi) {
820 opregion->acpi->drdy = 0;
822 system_opregion = NULL;
823 unregister_acpi_notifier(&intel_opregion_notifier);
826 /* just clear all opregion memory pointers now */
827 memunmap(opregion->header);
828 if (opregion->rvda) {
829 memunmap(opregion->rvda);
830 opregion->rvda = NULL;
832 opregion->header = NULL;
833 opregion->acpi = NULL;
834 opregion->swsci = NULL;
835 opregion->asle = NULL;
836 opregion->vbt = NULL;
837 opregion->lid_state = NULL;
840 static void swsci_setup(struct drm_i915_private *dev_priv)
842 struct intel_opregion *opregion = &dev_priv->opregion;
843 bool requested_callbacks = false;
846 /* Sub-function code 0 is okay, let's allow them. */
847 opregion->swsci_gbda_sub_functions = 1;
848 opregion->swsci_sbcb_sub_functions = 1;
850 /* We use GBDA to ask for supported GBDA calls. */
851 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
852 /* make the bits match the sub-function codes */
854 opregion->swsci_gbda_sub_functions |= tmp;
858 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
859 * must not call interfaces that are not specifically requested by the
862 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
863 /* here, the bits already match sub-function codes */
864 opregion->swsci_sbcb_sub_functions |= tmp;
865 requested_callbacks = true;
869 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
870 * the callback is _requested_. But we still can't call interfaces that
873 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
874 /* make the bits match the sub-function codes */
875 u32 low = tmp & 0x7ff;
876 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
877 tmp = (high << 4) | (low << 1) | 1;
879 /* best guess what to do with supported wrt requested */
880 if (requested_callbacks) {
881 u32 req = opregion->swsci_sbcb_sub_functions;
882 if ((req & tmp) != req)
883 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
884 /* XXX: for now, trust the requested callbacks */
885 /* opregion->swsci_sbcb_sub_functions &= tmp; */
887 opregion->swsci_sbcb_sub_functions |= tmp;
891 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
892 opregion->swsci_gbda_sub_functions,
893 opregion->swsci_sbcb_sub_functions);
896 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
898 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
899 "VBIOS ROM for %s\n", id->ident);
903 static const struct dmi_system_id intel_no_opregion_vbt[] = {
905 .callback = intel_no_opregion_vbt_callback,
906 .ident = "ThinkCentre A57",
908 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
909 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
915 int intel_opregion_setup(struct drm_i915_private *dev_priv)
917 struct intel_opregion *opregion = &dev_priv->opregion;
918 struct pci_dev *pdev = dev_priv->drm.pdev;
920 char buf[sizeof(OPREGION_SIGNATURE)];
926 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
927 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
928 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
929 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
930 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
932 pci_read_config_dword(pdev, ASLS, &asls);
933 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
935 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
939 INIT_WORK(&opregion->asle_work, asle_work);
941 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
945 memcpy(buf, base, sizeof(buf));
947 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
948 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
952 opregion->header = base;
953 opregion->lid_state = base + ACPI_CLID;
955 mboxes = opregion->header->mboxes;
956 if (mboxes & MBOX_ACPI) {
957 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
958 opregion->acpi = base + OPREGION_ACPI_OFFSET;
961 if (mboxes & MBOX_SWSCI) {
962 DRM_DEBUG_DRIVER("SWSCI supported\n");
963 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
964 swsci_setup(dev_priv);
967 if (mboxes & MBOX_ASLE) {
968 DRM_DEBUG_DRIVER("ASLE supported\n");
969 opregion->asle = base + OPREGION_ASLE_OFFSET;
971 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
974 if (mboxes & MBOX_ASLE_EXT)
975 DRM_DEBUG_DRIVER("ASLE extension supported\n");
977 if (dmi_check_system(intel_no_opregion_vbt))
980 if (opregion->header->opregion_ver >= 2 && opregion->asle &&
981 opregion->asle->rvda && opregion->asle->rvds) {
982 opregion->rvda = memremap(opregion->asle->rvda,
983 opregion->asle->rvds,
985 vbt = opregion->rvda;
986 vbt_size = opregion->asle->rvds;
987 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
988 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
990 opregion->vbt_size = vbt_size;
993 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (RVDA)\n");
997 vbt = base + OPREGION_VBT_OFFSET;
999 * The VBT specification says that if the ASLE ext mailbox is not used
1000 * its area is reserved, but on some CHT boards the VBT extends into the
1001 * ASLE ext area. Allow this even though it is against the spec, so we
1002 * do not end up rejecting the VBT on those boards (and end up not
1003 * finding the LCD panel because of this).
1005 vbt_size = (mboxes & MBOX_ASLE_EXT) ?
1006 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
1007 vbt_size -= OPREGION_VBT_OFFSET;
1008 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1009 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1010 opregion->vbt = vbt;
1011 opregion->vbt_size = vbt_size;
1013 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
1024 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1026 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1030 static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1032 .callback = intel_use_opregion_panel_type_callback,
1033 .ident = "Conrac GmbH IX45GM2",
1034 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1035 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1042 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1047 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1049 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n",
1054 ret = (panel_details >> 8) & 0xff;
1056 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret);
1060 /* fall back to VBT panel type? */
1062 DRM_DEBUG_KMS("No panel type in OpRegion\n");
1067 * So far we know that some machined must use it, others must not use it.
1068 * There doesn't seem to be any way to determine which way to go, except
1069 * via a quirk list :(
1071 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1072 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);