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/dmi.h>
31 #include <drm/i915_drm.h>
33 #include "intel_drv.h"
35 #include <contrib/dev/acpica/source/include/acpi.h>
36 #include <contrib/dev/acpica/source/include/accommon.h>
37 #include <dev/acpica/acpivar.h>
39 #define OPREGION_HEADER_OFFSET 0
40 #define OPREGION_ACPI_OFFSET 0x100
41 #define ACPI_CLID 0x01ac /* current lid state indicator */
42 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
43 #define OPREGION_SWSCI_OFFSET 0x200
44 #define OPREGION_ASLE_OFFSET 0x300
45 #define OPREGION_VBT_OFFSET 0x400
46 #define OPREGION_ASLE_EXT_OFFSET 0x1C00
48 #define OPREGION_SIGNATURE "IntelGraphicsMem"
49 #define MBOX_ACPI (1<<0)
50 #define MBOX_SWSCI (1<<1)
51 #define MBOX_ASLE (1<<2)
52 #define MBOX_ASLE_EXT (1<<4)
54 struct opregion_header {
68 /* OpRegion mailbox #1: public ACPI methods */
69 struct opregion_acpi {
70 u32 drdy; /* driver readiness */
71 u32 csts; /* notification status */
72 u32 cevt; /* current event */
74 u32 didl[8]; /* supported display devices ID list */
75 u32 cpdl[8]; /* currently presented display list */
76 u32 cadl[8]; /* currently active display list */
77 u32 nadl[8]; /* next active devices list */
78 u32 aslp; /* ASL sleep time-out */
79 u32 tidx; /* toggle table index */
80 u32 chpd; /* current hotplug enable indicator */
81 u32 clid; /* current lid state*/
82 u32 cdck; /* current docking state */
83 u32 sxsw; /* Sx state resume */
84 u32 evts; /* ASL supported events */
85 u32 cnot; /* current OS notification */
86 u32 nrdy; /* driver status */
87 u32 did2[7]; /* extended supported display devices ID list */
88 u32 cpd2[7]; /* extended attached display devices list */
92 /* OpRegion mailbox #2: SWSCI */
93 struct opregion_swsci {
94 u32 scic; /* SWSCI command|status|data */
95 u32 parm; /* command parameters */
96 u32 dslp; /* driver sleep time-out */
100 /* OpRegion mailbox #3: ASLE */
101 struct opregion_asle {
102 u32 ardy; /* driver readiness */
103 u32 aslc; /* ASLE interrupt command */
104 u32 tche; /* technology enabled indicator */
105 u32 alsi; /* current ALS illuminance reading */
106 u32 bclp; /* backlight brightness to set */
107 u32 pfit; /* panel fitting state */
108 u32 cblv; /* current brightness level */
109 u16 bclm[20]; /* backlight level duty cycle mapping table */
110 u32 cpfm; /* current panel fitting mode */
111 u32 epfm; /* enabled panel fitting modes */
112 u8 plut[74]; /* panel LUT and identifier */
113 u32 pfmb; /* PWM freq and min brightness */
114 u32 cddv; /* color correction default values */
115 u32 pcft; /* power conservation features */
116 u32 srot; /* supported rotation angles */
117 u32 iuer; /* IUER events */
121 u64 rvda; /* Physical address of raw vbt data */
122 u32 rvds; /* Size of raw vbt data */
126 /* OpRegion mailbox #5: ASLE ext */
127 struct opregion_asle_ext {
128 u32 phed; /* Panel Header */
129 u8 bddc[256]; /* Panel EDID */
133 /* Driver readiness indicator */
134 #define ASLE_ARDY_READY (1 << 0)
135 #define ASLE_ARDY_NOT_READY (0 << 0)
137 /* ASLE Interrupt Command (ASLC) bits */
138 #define ASLC_SET_ALS_ILLUM (1 << 0)
139 #define ASLC_SET_BACKLIGHT (1 << 1)
140 #define ASLC_SET_PFIT (1 << 2)
141 #define ASLC_SET_PWM_FREQ (1 << 3)
142 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
143 #define ASLC_BUTTON_ARRAY (1 << 5)
144 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
145 #define ASLC_DOCKING_INDICATOR (1 << 7)
146 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
147 #define ASLC_REQ_MSK 0x1ff
149 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
150 #define ASLC_BACKLIGHT_FAILED (1 << 12)
151 #define ASLC_PFIT_FAILED (1 << 14)
152 #define ASLC_PWM_FREQ_FAILED (1 << 16)
153 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
154 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
155 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
156 #define ASLC_DOCKING_FAILED (1 << 24)
157 #define ASLC_ISCT_STATE_FAILED (1 << 26)
159 /* Technology enabled indicator */
160 #define ASLE_TCHE_ALS_EN (1 << 0)
161 #define ASLE_TCHE_BLC_EN (1 << 1)
162 #define ASLE_TCHE_PFIT_EN (1 << 2)
163 #define ASLE_TCHE_PFMB_EN (1 << 3)
165 /* ASLE backlight brightness to set */
166 #define ASLE_BCLP_VALID (1<<31)
167 #define ASLE_BCLP_MSK (~(1<<31))
169 /* ASLE panel fitting request */
170 #define ASLE_PFIT_VALID (1<<31)
171 #define ASLE_PFIT_CENTER (1<<0)
172 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
173 #define ASLE_PFIT_STRETCH_GFX (1<<2)
175 /* PWM frequency and minimum brightness */
176 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
177 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
178 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
179 #define ASLE_PFMB_PWM_VALID (1<<31)
181 #define ASLE_CBLV_VALID (1<<31)
184 #define ASLE_IUER_DOCKING (1 << 7)
185 #define ASLE_IUER_CONVERTIBLE (1 << 6)
186 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
187 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
188 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
189 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
190 #define ASLE_IUER_POWER_BTN (1 << 0)
192 /* Software System Control Interrupt (SWSCI) */
193 #define SWSCI_SCIC_INDICATOR (1 << 0)
194 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
195 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
196 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
197 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
198 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
199 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
200 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
201 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
202 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
204 #define SWSCI_FUNCTION_CODE(main, sub) \
205 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
206 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
208 /* SWSCI: Get BIOS Data (GBDA) */
210 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
211 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
212 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
213 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
214 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
215 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
216 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
218 /* SWSCI: System BIOS Callbacks (SBCB) */
220 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
221 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
222 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
223 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
224 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
225 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
226 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
227 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
228 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
229 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
230 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
231 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
232 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
233 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
234 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
235 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
238 * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices
239 * Attached to the Display Adapter).
241 #define ACPI_DISPLAY_INDEX_SHIFT 0
242 #define ACPI_DISPLAY_INDEX_MASK (0xf << 0)
243 #define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT 4
244 #define ACPI_DISPLAY_PORT_ATTACHMENT_MASK (0xf << 4)
245 #define ACPI_DISPLAY_TYPE_SHIFT 8
246 #define ACPI_DISPLAY_TYPE_MASK (0xf << 8)
247 #define ACPI_DISPLAY_TYPE_OTHER (0 << 8)
248 #define ACPI_DISPLAY_TYPE_VGA (1 << 8)
249 #define ACPI_DISPLAY_TYPE_TV (2 << 8)
250 #define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL (3 << 8)
251 #define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL (4 << 8)
252 #define ACPI_VENDOR_SPECIFIC_SHIFT 12
253 #define ACPI_VENDOR_SPECIFIC_MASK (0xf << 12)
254 #define ACPI_BIOS_CAN_DETECT (1 << 16)
255 #define ACPI_DEPENDS_ON_VGA (1 << 17)
256 #define ACPI_PIPE_ID_SHIFT 18
257 #define ACPI_PIPE_ID_MASK (7 << 18)
258 #define ACPI_DEVICE_ID_SCHEME (1 << 31)
260 #define MAX_DSLP 1500
262 static int swsci(struct drm_i915_private *dev_priv,
263 u32 function, u32 parm, u32 *parm_out)
265 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
266 struct pci_dev *pdev = dev_priv->drm.pdev;
267 u32 main_function, sub_function, scic;
274 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
275 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
276 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
277 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
279 /* Check if we can call the function. See swsci_setup for details. */
280 if (main_function == SWSCI_SBCB) {
281 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
282 (1 << sub_function)) == 0)
284 } else if (main_function == SWSCI_GBDA) {
285 if ((dev_priv->opregion.swsci_gbda_sub_functions &
286 (1 << sub_function)) == 0)
290 /* Driver sleep timeout in ms. */
293 /* The spec says 2ms should be the default, but it's too small
294 * for some machines. */
296 } else if (dslp > MAX_DSLP) {
297 /* Hey bios, trust must be earned. */
298 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
299 "using %u ms instead\n", dslp, MAX_DSLP);
303 /* The spec tells us to do this, but we are the only user... */
305 if (scic & SWSCI_SCIC_INDICATOR) {
306 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
310 scic = function | SWSCI_SCIC_INDICATOR;
315 /* Ensure SCI event is selected and event trigger is cleared. */
316 pci_read_config_word(pdev, SWSCI, &swsci_val);
317 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
318 swsci_val |= SWSCI_SCISEL;
319 swsci_val &= ~SWSCI_GSSCIE;
320 pci_write_config_word(pdev, SWSCI, swsci_val);
323 /* Use event trigger to tell bios to check the mail. */
324 swsci_val |= SWSCI_GSSCIE;
325 pci_write_config_word(pdev, SWSCI, swsci_val);
327 /* Poll for the result. */
328 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
329 if (wait_for(C, dslp)) {
330 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
334 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
335 SWSCI_SCIC_EXIT_STATUS_SHIFT;
337 /* Note: scic == 0 is an error! */
338 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
339 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
344 *parm_out = swsci->parm;
351 #define DISPLAY_TYPE_CRT 0
352 #define DISPLAY_TYPE_TV 1
353 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
354 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
356 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
359 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
364 /* don't care about old stuff for now */
365 if (!HAS_DDI(dev_priv))
368 if (intel_encoder->type == INTEL_OUTPUT_DSI)
371 port = intel_ddi_get_encoder_port(intel_encoder);
373 if (port == PORT_E) {
383 switch (intel_encoder->type) {
384 case INTEL_OUTPUT_ANALOG:
385 type = DISPLAY_TYPE_CRT;
387 case INTEL_OUTPUT_UNKNOWN:
388 case INTEL_OUTPUT_DP:
389 case INTEL_OUTPUT_HDMI:
390 case INTEL_OUTPUT_DP_MST:
391 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
393 case INTEL_OUTPUT_EDP:
394 case INTEL_OUTPUT_DSI:
395 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
398 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
399 intel_encoder->type);
403 parm |= type << (16 + port * 3);
405 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
408 static const struct {
409 pci_power_t pci_power_state;
411 } power_state_map[] = {
416 { PCI_D3cold, 0x04 },
419 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
424 if (!HAS_DDI(dev_priv))
427 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
428 if (state == power_state_map[i].pci_power_state)
429 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
430 power_state_map[i].parm, NULL);
436 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
438 struct intel_connector *connector;
439 struct opregion_asle *asle = dev_priv->opregion.asle;
440 struct drm_device *dev = &dev_priv->drm;
442 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
444 #ifndef __DragonFly__
445 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
446 DRM_DEBUG_KMS("opregion backlight request ignored\n");
451 if (!(bclp & ASLE_BCLP_VALID))
452 return ASLC_BACKLIGHT_FAILED;
454 bclp &= ASLE_BCLP_MSK;
456 return ASLC_BACKLIGHT_FAILED;
458 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
461 * Update backlight on all connectors that support backlight (usually
464 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
465 for_each_intel_connector(dev, connector)
466 intel_panel_set_backlight_acpi(connector, bclp, 255);
467 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
469 drm_modeset_unlock(&dev->mode_config.connection_mutex);
475 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
477 /* alsi is the current ALS reading in lux. 0 indicates below sensor
478 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
479 DRM_DEBUG_DRIVER("Illum is not supported\n");
480 return ASLC_ALS_ILLUM_FAILED;
483 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
485 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
486 return ASLC_PWM_FREQ_FAILED;
489 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
491 /* Panel fitting is currently controlled by the X code, so this is a
492 noop until modesetting support works fully */
493 DRM_DEBUG_DRIVER("Pfit is not supported\n");
494 return ASLC_PFIT_FAILED;
497 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
499 DRM_DEBUG_DRIVER("SROT is not supported\n");
500 return ASLC_ROTATION_ANGLES_FAILED;
503 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
506 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
507 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
508 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
509 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
510 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
511 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
512 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
513 if (iuer & ASLE_IUER_WINDOWS_BTN)
514 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
515 if (iuer & ASLE_IUER_POWER_BTN)
516 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
518 return ASLC_BUTTON_ARRAY_FAILED;
521 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
523 if (iuer & ASLE_IUER_CONVERTIBLE)
524 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
526 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
528 return ASLC_CONVERTIBLE_FAILED;
531 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
533 if (iuer & ASLE_IUER_DOCKING)
534 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
536 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
538 return ASLC_DOCKING_FAILED;
541 static u32 asle_isct_state(struct drm_i915_private *dev_priv)
543 DRM_DEBUG_DRIVER("ISCT is not supported\n");
544 return ASLC_ISCT_STATE_FAILED;
547 static void asle_work(struct work_struct *work)
549 struct intel_opregion *opregion =
550 container_of(work, struct intel_opregion, asle_work);
551 struct drm_i915_private *dev_priv =
552 container_of(opregion, struct drm_i915_private, opregion);
553 struct opregion_asle *asle = dev_priv->opregion.asle;
560 aslc_req = asle->aslc;
562 if (!(aslc_req & ASLC_REQ_MSK)) {
563 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
568 if (aslc_req & ASLC_SET_ALS_ILLUM)
569 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
571 if (aslc_req & ASLC_SET_BACKLIGHT)
572 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
574 if (aslc_req & ASLC_SET_PFIT)
575 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
577 if (aslc_req & ASLC_SET_PWM_FREQ)
578 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
580 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
581 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
584 if (aslc_req & ASLC_BUTTON_ARRAY)
585 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
587 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
588 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
590 if (aslc_req & ASLC_DOCKING_INDICATOR)
591 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
593 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
594 aslc_stat |= asle_isct_state(dev_priv);
596 asle->aslc = aslc_stat;
599 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
601 if (dev_priv->opregion.asle)
602 schedule_work(&dev_priv->opregion.asle_work);
605 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
606 #define ACPI_EV_LID (1<<1)
607 #define ACPI_EV_DOCK (1<<2)
609 static struct intel_opregion *system_opregion;
612 static int intel_opregion_video_event(struct notifier_block *nb,
613 unsigned long val, void *data)
615 /* The only video events relevant to opregion are 0x80. These indicate
616 either a docking event, lid switch or display switch request. In
617 Linux, these are handled by the dock, button and video drivers.
620 struct acpi_bus_event *event = data;
621 struct opregion_acpi *acpi;
624 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
627 if (!system_opregion)
630 acpi = system_opregion->acpi;
632 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
640 static struct notifier_block intel_opregion_notifier = {
641 .notifier_call = intel_opregion_video_event,
645 static int acpi_is_video_device(ACPI_HANDLE devh) {
647 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) ||
648 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) {
655 * Initialise the DIDL field in opregion. This passes a list of devices to
656 * the firmware. Values are defined by section B.4.2 of the ACPI specification
660 static u32 get_did(struct intel_opregion *opregion, int i)
664 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
665 did = opregion->acpi->didl[i];
667 i -= ARRAY_SIZE(opregion->acpi->didl);
669 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
672 did = opregion->acpi->did2[i];
678 static void set_did(struct intel_opregion *opregion, int i, u32 val)
680 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
681 opregion->acpi->didl[i] = val;
683 i -= ARRAY_SIZE(opregion->acpi->didl);
685 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
688 opregion->acpi->did2[i] = val;
692 static u32 acpi_display_type(struct drm_connector *connector)
696 switch (connector->connector_type) {
697 case DRM_MODE_CONNECTOR_VGA:
698 case DRM_MODE_CONNECTOR_DVIA:
699 display_type = ACPI_DISPLAY_TYPE_VGA;
701 case DRM_MODE_CONNECTOR_Composite:
702 case DRM_MODE_CONNECTOR_SVIDEO:
703 case DRM_MODE_CONNECTOR_Component:
704 case DRM_MODE_CONNECTOR_9PinDIN:
705 case DRM_MODE_CONNECTOR_TV:
706 display_type = ACPI_DISPLAY_TYPE_TV;
708 case DRM_MODE_CONNECTOR_DVII:
709 case DRM_MODE_CONNECTOR_DVID:
710 case DRM_MODE_CONNECTOR_DisplayPort:
711 case DRM_MODE_CONNECTOR_HDMIA:
712 case DRM_MODE_CONNECTOR_HDMIB:
713 display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
715 case DRM_MODE_CONNECTOR_LVDS:
716 case DRM_MODE_CONNECTOR_eDP:
717 case DRM_MODE_CONNECTOR_DSI:
718 display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
720 case DRM_MODE_CONNECTOR_Unknown:
721 case DRM_MODE_CONNECTOR_VIRTUAL:
722 display_type = ACPI_DISPLAY_TYPE_OTHER;
725 MISSING_CASE(connector->connector_type);
726 display_type = ACPI_DISPLAY_TYPE_OTHER;
733 static void intel_didl_outputs(struct drm_i915_private *dev_priv)
735 struct intel_opregion *opregion = &dev_priv->opregion;
736 struct pci_dev *pdev = dev_priv->drm.pdev;
737 struct drm_connector *connector;
738 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus;
741 u32 temp, max_outputs;
744 handle = acpi_get_handle(pdev->dev.bsddev);
748 if (acpi_is_video_device(handle))
749 acpi_video_bus = handle;
752 acpi_video_bus = NULL;
753 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev,
754 &acpi_cdev) != AE_NOT_FOUND) {
755 if (acpi_is_video_device(acpi_cdev)) {
756 acpi_video_bus = acpi_cdev;
762 if (!acpi_video_bus) {
763 DRM_DEBUG_KMS("No ACPI video bus found\n");
768 * In theory, did2, the extended didl, gets added at opregion version
769 * 3.0. In practice, however, we're supposed to set it for earlier
770 * versions as well, since a BIOS that doesn't understand did2 should
771 * not look at it anyway. Use a variable so we can tweak this if a need
774 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
775 ARRAY_SIZE(opregion->acpi->did2);
780 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev,
781 &acpi_cdev) != AE_NOT_FOUND) {
782 if (i >= max_outputs) {
783 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
787 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id);
788 if (ACPI_SUCCESS(status)) {
791 set_did(opregion, i++, (u32)(device_id & 0x0f0f));
796 DRM_DEBUG_KMS("%d outputs detected\n", i);
798 /* If fewer than max outputs, the list must be null terminated */
800 set_did(opregion, i, 0);
805 list_for_each_entry(connector,
806 &dev_priv->drm.mode_config.connector_list, head) {
807 int display_type = acpi_display_type(connector);
808 if (i >= max_outputs) {
809 DRM_DEBUG_KMS("More than %u outputs in connector list\n",
814 temp = get_did(opregion, i);
815 set_did(opregion, i, temp | (1 << 31) | display_type | i);
821 static void intel_setup_cadls(struct drm_i915_private *dev_priv)
823 struct intel_opregion *opregion = &dev_priv->opregion;
827 /* Initialize the CADL field by duplicating the DIDL values.
828 * Technically, this is not always correct as display outputs may exist,
829 * but not active. This initialization is necessary for some Clevo
830 * laptops that check this field before processing the brightness and
831 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
832 * there are less than eight devices. */
834 disp_id = get_did(opregion, i);
835 opregion->acpi->cadl[i] = disp_id;
836 } while (++i < 8 && disp_id != 0);
839 void intel_opregion_register(struct drm_i915_private *dev_priv)
841 struct intel_opregion *opregion = &dev_priv->opregion;
843 if (!opregion->header)
846 if (opregion->acpi) {
847 intel_didl_outputs(dev_priv);
848 intel_setup_cadls(dev_priv);
850 /* Notify BIOS we are ready to handle ACPI video ext notifs.
851 * Right now, all the events are handled by the ACPI video module.
852 * We don't actually need to do anything with them. */
853 opregion->acpi->csts = 0;
854 opregion->acpi->drdy = 1;
856 system_opregion = opregion;
859 if (opregion->asle) {
860 opregion->asle->tche = ASLE_TCHE_BLC_EN;
861 opregion->asle->ardy = ASLE_ARDY_READY;
865 void intel_opregion_unregister(struct drm_i915_private *dev_priv)
867 struct intel_opregion *opregion = &dev_priv->opregion;
869 if (!opregion->header)
873 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
875 cancel_work_sync(&dev_priv->opregion.asle_work);
877 if (opregion->acpi) {
878 opregion->acpi->drdy = 0;
880 system_opregion = NULL;
883 /* just clear all opregion memory pointers now */
884 iounmap(opregion->header);
885 if (opregion->rvda) {
886 iounmap(opregion->rvda);
887 opregion->rvda = NULL;
889 opregion->header = NULL;
890 opregion->acpi = NULL;
891 opregion->swsci = NULL;
892 opregion->asle = NULL;
893 opregion->vbt = NULL;
894 opregion->lid_state = NULL;
897 static void swsci_setup(struct drm_i915_private *dev_priv)
899 struct intel_opregion *opregion = &dev_priv->opregion;
900 bool requested_callbacks = false;
903 /* Sub-function code 0 is okay, let's allow them. */
904 opregion->swsci_gbda_sub_functions = 1;
905 opregion->swsci_sbcb_sub_functions = 1;
907 /* We use GBDA to ask for supported GBDA calls. */
908 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
909 /* make the bits match the sub-function codes */
911 opregion->swsci_gbda_sub_functions |= tmp;
915 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
916 * must not call interfaces that are not specifically requested by the
919 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
920 /* here, the bits already match sub-function codes */
921 opregion->swsci_sbcb_sub_functions |= tmp;
922 requested_callbacks = true;
926 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
927 * the callback is _requested_. But we still can't call interfaces that
930 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
931 /* make the bits match the sub-function codes */
932 u32 low = tmp & 0x7ff;
933 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
934 tmp = (high << 4) | (low << 1) | 1;
936 /* best guess what to do with supported wrt requested */
937 if (requested_callbacks) {
938 u32 req = opregion->swsci_sbcb_sub_functions;
939 if ((req & tmp) != req)
940 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
941 /* XXX: for now, trust the requested callbacks */
942 /* opregion->swsci_sbcb_sub_functions &= tmp; */
944 opregion->swsci_sbcb_sub_functions |= tmp;
948 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
949 opregion->swsci_gbda_sub_functions,
950 opregion->swsci_sbcb_sub_functions);
953 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
955 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
956 "VBIOS ROM for %s\n", id->ident);
960 static const struct dmi_system_id intel_no_opregion_vbt[] = {
962 .callback = intel_no_opregion_vbt_callback,
963 .ident = "ThinkCentre A57",
965 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
966 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
972 int intel_opregion_setup(struct drm_i915_private *dev_priv)
974 struct intel_opregion *opregion = &dev_priv->opregion;
975 struct pci_dev *pdev = dev_priv->drm.pdev;
977 char buf[sizeof(OPREGION_SIGNATURE)];
981 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
982 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
983 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
984 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
985 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
987 pci_read_config_dword(pdev, ASLS, &asls);
988 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
990 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
994 INIT_WORK(&opregion->asle_work, asle_work);
996 base = (void *)pmap_mapbios(asls, OPREGION_SIZE);
1000 memcpy(buf, base, sizeof(buf));
1002 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
1003 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
1007 opregion->header = (struct opregion_header *)base;
1009 opregion->lid_state = (u32 *)(base + ACPI_CLID);
1011 mboxes = opregion->header->mboxes;
1012 if (mboxes & MBOX_ACPI) {
1013 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
1014 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET);
1017 if (mboxes & MBOX_SWSCI) {
1018 DRM_DEBUG_DRIVER("SWSCI supported\n");
1019 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET);
1020 swsci_setup(dev_priv);
1023 if (mboxes & MBOX_ASLE) {
1024 DRM_DEBUG_DRIVER("ASLE supported\n");
1025 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET);
1027 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
1030 if (mboxes & MBOX_ASLE_EXT)
1031 DRM_DEBUG_DRIVER("ASLE extension supported\n");
1033 if (!dmi_check_system(intel_no_opregion_vbt)) {
1034 const void *vbt = NULL;
1037 if (opregion->header->opregion_ver >= 2 && opregion->asle &&
1038 opregion->asle->rvda && opregion->asle->rvds) {
1039 opregion->rvda = pmap_mapbios(opregion->asle->rvda,
1040 opregion->asle->rvds);
1041 vbt = opregion->rvda;
1042 vbt_size = opregion->asle->rvds;
1045 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1046 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
1047 opregion->vbt = vbt;
1048 opregion->vbt_size = vbt_size;
1050 vbt = base + OPREGION_VBT_OFFSET;
1051 vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET;
1052 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1053 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1054 opregion->vbt = vbt;
1055 opregion->vbt_size = vbt_size;
1067 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1069 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1073 static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1075 .callback = intel_use_opregion_panel_type_callback,
1076 .ident = "Conrac GmbH IX45GM2",
1077 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1078 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1085 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1090 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1092 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n",
1097 ret = (panel_details >> 8) & 0xff;
1099 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret);
1103 /* fall back to VBT panel type? */
1105 DRM_DEBUG_KMS("No panel type in OpRegion\n");
1110 * So far we know that some machined must use it, others must not use it.
1111 * There doesn't seem to be any way to determine which way to go, except
1112 * via a quirk list :(
1114 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1115 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);
1120 * FIXME On Dell XPS 13 9350 the OpRegion panel type (0) gives us
1121 * low vswing for eDP, whereas the VBT panel type (2) gives us normal
1122 * vswing instead. Low vswing results in some display flickers, so
1123 * let's simply ignore the OpRegion panel type on SKL for now.
1125 if (IS_SKYLAKE(dev_priv)) {
1126 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);