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 <linux/firmware.h>
31 #include <acpi/video.h>
33 #include "display/intel_panel.h"
36 #include "intel_acpi.h"
37 #include "intel_display_types.h"
38 #include "intel_opregion.h"
40 #define OPREGION_HEADER_OFFSET 0
41 #define OPREGION_ACPI_OFFSET 0x100
42 #define ACPI_CLID 0x01ac /* current lid state indicator */
43 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
44 #define OPREGION_SWSCI_OFFSET 0x200
45 #define OPREGION_ASLE_OFFSET 0x300
46 #define OPREGION_VBT_OFFSET 0x400
47 #define OPREGION_ASLE_EXT_OFFSET 0x1C00
49 #define OPREGION_SIGNATURE "IntelGraphicsMem"
50 #define MBOX_ACPI (1<<0)
51 #define MBOX_SWSCI (1<<1)
52 #define MBOX_ASLE (1<<2)
53 #define MBOX_ASLE_EXT (1<<4)
55 struct opregion_header {
74 /* OpRegion mailbox #1: public ACPI methods */
75 struct opregion_acpi {
76 u32 drdy; /* driver readiness */
77 u32 csts; /* notification status */
78 u32 cevt; /* current event */
80 u32 didl[8]; /* supported display devices ID list */
81 u32 cpdl[8]; /* currently presented display list */
82 u32 cadl[8]; /* currently active display list */
83 u32 nadl[8]; /* next active devices list */
84 u32 aslp; /* ASL sleep time-out */
85 u32 tidx; /* toggle table index */
86 u32 chpd; /* current hotplug enable indicator */
87 u32 clid; /* current lid state*/
88 u32 cdck; /* current docking state */
89 u32 sxsw; /* Sx state resume */
90 u32 evts; /* ASL supported events */
91 u32 cnot; /* current OS notification */
92 u32 nrdy; /* driver status */
93 u32 did2[7]; /* extended supported display devices ID list */
94 u32 cpd2[7]; /* extended attached display devices list */
98 /* OpRegion mailbox #2: SWSCI */
99 struct opregion_swsci {
100 u32 scic; /* SWSCI command|status|data */
101 u32 parm; /* command parameters */
102 u32 dslp; /* driver sleep time-out */
106 /* OpRegion mailbox #3: ASLE */
107 struct opregion_asle {
108 u32 ardy; /* driver readiness */
109 u32 aslc; /* ASLE interrupt command */
110 u32 tche; /* technology enabled indicator */
111 u32 alsi; /* current ALS illuminance reading */
112 u32 bclp; /* backlight brightness to set */
113 u32 pfit; /* panel fitting state */
114 u32 cblv; /* current brightness level */
115 u16 bclm[20]; /* backlight level duty cycle mapping table */
116 u32 cpfm; /* current panel fitting mode */
117 u32 epfm; /* enabled panel fitting modes */
118 u8 plut[74]; /* panel LUT and identifier */
119 u32 pfmb; /* PWM freq and min brightness */
120 u32 cddv; /* color correction default values */
121 u32 pcft; /* power conservation features */
122 u32 srot; /* supported rotation angles */
123 u32 iuer; /* IUER events */
127 u64 rvda; /* Physical (2.0) or relative from opregion (2.1+)
128 * address of raw VBT data. */
129 u32 rvds; /* Size of raw vbt data */
133 /* OpRegion mailbox #5: ASLE ext */
134 struct opregion_asle_ext {
135 u32 phed; /* Panel Header */
136 u8 bddc[256]; /* Panel EDID */
140 /* Driver readiness indicator */
141 #define ASLE_ARDY_READY (1 << 0)
142 #define ASLE_ARDY_NOT_READY (0 << 0)
144 /* ASLE Interrupt Command (ASLC) bits */
145 #define ASLC_SET_ALS_ILLUM (1 << 0)
146 #define ASLC_SET_BACKLIGHT (1 << 1)
147 #define ASLC_SET_PFIT (1 << 2)
148 #define ASLC_SET_PWM_FREQ (1 << 3)
149 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
150 #define ASLC_BUTTON_ARRAY (1 << 5)
151 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
152 #define ASLC_DOCKING_INDICATOR (1 << 7)
153 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
154 #define ASLC_REQ_MSK 0x1ff
156 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
157 #define ASLC_BACKLIGHT_FAILED (1 << 12)
158 #define ASLC_PFIT_FAILED (1 << 14)
159 #define ASLC_PWM_FREQ_FAILED (1 << 16)
160 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
161 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
162 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
163 #define ASLC_DOCKING_FAILED (1 << 24)
164 #define ASLC_ISCT_STATE_FAILED (1 << 26)
166 /* Technology enabled indicator */
167 #define ASLE_TCHE_ALS_EN (1 << 0)
168 #define ASLE_TCHE_BLC_EN (1 << 1)
169 #define ASLE_TCHE_PFIT_EN (1 << 2)
170 #define ASLE_TCHE_PFMB_EN (1 << 3)
172 /* ASLE backlight brightness to set */
173 #define ASLE_BCLP_VALID (1<<31)
174 #define ASLE_BCLP_MSK (~(1<<31))
176 /* ASLE panel fitting request */
177 #define ASLE_PFIT_VALID (1<<31)
178 #define ASLE_PFIT_CENTER (1<<0)
179 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
180 #define ASLE_PFIT_STRETCH_GFX (1<<2)
182 /* PWM frequency and minimum brightness */
183 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
184 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
185 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
186 #define ASLE_PFMB_PWM_VALID (1<<31)
188 #define ASLE_CBLV_VALID (1<<31)
191 #define ASLE_IUER_DOCKING (1 << 7)
192 #define ASLE_IUER_CONVERTIBLE (1 << 6)
193 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
194 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
195 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
196 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
197 #define ASLE_IUER_POWER_BTN (1 << 0)
199 /* Software System Control Interrupt (SWSCI) */
200 #define SWSCI_SCIC_INDICATOR (1 << 0)
201 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
202 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
203 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
204 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
205 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
206 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
207 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
208 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
209 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
211 #define SWSCI_FUNCTION_CODE(main, sub) \
212 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
213 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
215 /* SWSCI: Get BIOS Data (GBDA) */
217 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
218 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
219 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
220 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
221 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
222 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
223 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
225 /* SWSCI: System BIOS Callbacks (SBCB) */
227 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
228 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
229 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
230 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
231 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
232 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
233 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
234 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
235 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
236 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
237 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
238 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
239 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
240 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
241 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
242 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
244 #define MAX_DSLP 1500
246 static int swsci(struct drm_i915_private *dev_priv,
247 u32 function, u32 parm, u32 *parm_out)
249 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
250 struct pci_dev *pdev = dev_priv->drm.pdev;
251 u32 main_function, sub_function, scic;
258 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
259 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
260 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
261 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
263 /* Check if we can call the function. See swsci_setup for details. */
264 if (main_function == SWSCI_SBCB) {
265 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
266 (1 << sub_function)) == 0)
268 } else if (main_function == SWSCI_GBDA) {
269 if ((dev_priv->opregion.swsci_gbda_sub_functions &
270 (1 << sub_function)) == 0)
274 /* Driver sleep timeout in ms. */
277 /* The spec says 2ms should be the default, but it's too small
278 * for some machines. */
280 } else if (dslp > MAX_DSLP) {
281 /* Hey bios, trust must be earned. */
282 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
283 "using %u ms instead\n", dslp, MAX_DSLP);
287 /* The spec tells us to do this, but we are the only user... */
289 if (scic & SWSCI_SCIC_INDICATOR) {
290 drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n");
294 scic = function | SWSCI_SCIC_INDICATOR;
299 /* Ensure SCI event is selected and event trigger is cleared. */
300 pci_read_config_word(pdev, SWSCI, &swsci_val);
301 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
302 swsci_val |= SWSCI_SCISEL;
303 swsci_val &= ~SWSCI_GSSCIE;
304 pci_write_config_word(pdev, SWSCI, swsci_val);
307 /* Use event trigger to tell bios to check the mail. */
308 swsci_val |= SWSCI_GSSCIE;
309 pci_write_config_word(pdev, SWSCI, swsci_val);
311 /* Poll for the result. */
312 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
313 if (wait_for(C, dslp)) {
314 drm_dbg(&dev_priv->drm, "SWSCI request timed out\n");
318 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
319 SWSCI_SCIC_EXIT_STATUS_SHIFT;
321 /* Note: scic == 0 is an error! */
322 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
323 drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic);
328 *parm_out = swsci->parm;
335 #define DISPLAY_TYPE_CRT 0
336 #define DISPLAY_TYPE_TV 1
337 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
338 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
340 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
343 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
348 /* don't care about old stuff for now */
349 if (!HAS_DDI(dev_priv))
352 if (intel_encoder->type == INTEL_OUTPUT_DSI)
355 port = intel_encoder->port;
357 if (port == PORT_E) {
365 * The port numbering and mapping here is bizarre. The now-obsolete
366 * swsci spec supports ports numbered [0..4]. Port E is handled as a
367 * special case, but port F and beyond are not. The functionality is
368 * supposed to be obsolete for new platforms. Just bail out if the port
369 * number is out of bounds after mapping.
372 drm_dbg_kms(&dev_priv->drm,
373 "[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n",
374 intel_encoder->base.base.id, intel_encoder->base.name,
375 port_name(intel_encoder->port), port);
382 switch (intel_encoder->type) {
383 case INTEL_OUTPUT_ANALOG:
384 type = DISPLAY_TYPE_CRT;
386 case INTEL_OUTPUT_DDI:
387 case INTEL_OUTPUT_DP:
388 case INTEL_OUTPUT_HDMI:
389 case INTEL_OUTPUT_DP_MST:
390 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
392 case INTEL_OUTPUT_EDP:
393 case INTEL_OUTPUT_DSI:
394 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
397 drm_WARN_ONCE(&dev_priv->drm, 1,
398 "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 drm_connector_list_iter conn_iter;
440 struct opregion_asle *asle = dev_priv->opregion.asle;
441 struct drm_device *dev = &dev_priv->drm;
443 drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp);
445 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
446 drm_dbg_kms(&dev_priv->drm,
447 "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_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n",
466 drm_connector_list_iter_begin(dev, &conn_iter);
467 for_each_intel_connector_iter(connector, &conn_iter)
468 intel_panel_set_backlight_acpi(connector->base.state, bclp, 255);
469 drm_connector_list_iter_end(&conn_iter);
470 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
472 drm_modeset_unlock(&dev->mode_config.connection_mutex);
478 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
480 /* alsi is the current ALS reading in lux. 0 indicates below sensor
481 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
482 drm_dbg(&dev_priv->drm, "Illum is not supported\n");
483 return ASLC_ALS_ILLUM_FAILED;
486 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
488 drm_dbg(&dev_priv->drm, "PWM freq is not supported\n");
489 return ASLC_PWM_FREQ_FAILED;
492 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
494 /* Panel fitting is currently controlled by the X code, so this is a
495 noop until modesetting support works fully */
496 drm_dbg(&dev_priv->drm, "Pfit is not supported\n");
497 return ASLC_PFIT_FAILED;
500 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
502 drm_dbg(&dev_priv->drm, "SROT is not supported\n");
503 return ASLC_ROTATION_ANGLES_FAILED;
506 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
509 drm_dbg(&dev_priv->drm,
510 "Button array event is not supported (nothing)\n");
511 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
512 drm_dbg(&dev_priv->drm,
513 "Button array event is not supported (rotation lock)\n");
514 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
515 drm_dbg(&dev_priv->drm,
516 "Button array event is not supported (volume down)\n");
517 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
518 drm_dbg(&dev_priv->drm,
519 "Button array event is not supported (volume up)\n");
520 if (iuer & ASLE_IUER_WINDOWS_BTN)
521 drm_dbg(&dev_priv->drm,
522 "Button array event is not supported (windows)\n");
523 if (iuer & ASLE_IUER_POWER_BTN)
524 drm_dbg(&dev_priv->drm,
525 "Button array event is not supported (power)\n");
527 return ASLC_BUTTON_ARRAY_FAILED;
530 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
532 if (iuer & ASLE_IUER_CONVERTIBLE)
533 drm_dbg(&dev_priv->drm,
534 "Convertible is not supported (clamshell)\n");
536 drm_dbg(&dev_priv->drm,
537 "Convertible is not supported (slate)\n");
539 return ASLC_CONVERTIBLE_FAILED;
542 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
544 if (iuer & ASLE_IUER_DOCKING)
545 drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n");
547 drm_dbg(&dev_priv->drm,
548 "Docking is not supported (undocked)\n");
550 return ASLC_DOCKING_FAILED;
553 static u32 asle_isct_state(struct drm_i915_private *dev_priv)
555 drm_dbg(&dev_priv->drm, "ISCT is not supported\n");
556 return ASLC_ISCT_STATE_FAILED;
559 static void asle_work(struct work_struct *work)
561 struct intel_opregion *opregion =
562 container_of(work, struct intel_opregion, asle_work);
563 struct drm_i915_private *dev_priv =
564 container_of(opregion, struct drm_i915_private, opregion);
565 struct opregion_asle *asle = dev_priv->opregion.asle;
572 aslc_req = asle->aslc;
574 if (!(aslc_req & ASLC_REQ_MSK)) {
575 drm_dbg(&dev_priv->drm,
576 "No request on ASLC interrupt 0x%08x\n", aslc_req);
580 if (aslc_req & ASLC_SET_ALS_ILLUM)
581 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
583 if (aslc_req & ASLC_SET_BACKLIGHT)
584 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
586 if (aslc_req & ASLC_SET_PFIT)
587 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
589 if (aslc_req & ASLC_SET_PWM_FREQ)
590 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
592 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
593 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
596 if (aslc_req & ASLC_BUTTON_ARRAY)
597 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
599 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
600 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
602 if (aslc_req & ASLC_DOCKING_INDICATOR)
603 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
605 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
606 aslc_stat |= asle_isct_state(dev_priv);
608 asle->aslc = aslc_stat;
611 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
613 if (dev_priv->opregion.asle)
614 schedule_work(&dev_priv->opregion.asle_work);
617 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
618 #define ACPI_EV_LID (1<<1)
619 #define ACPI_EV_DOCK (1<<2)
622 * The only video events relevant to opregion are 0x80. These indicate either a
623 * docking event, lid switch or display switch request. In Linux, these are
624 * handled by the dock, button and video drivers.
626 static int intel_opregion_video_event(struct notifier_block *nb,
627 unsigned long val, void *data)
629 struct intel_opregion *opregion = container_of(nb, struct intel_opregion,
631 struct acpi_bus_event *event = data;
632 struct opregion_acpi *acpi;
635 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
638 acpi = opregion->acpi;
640 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
649 * Initialise the DIDL field in opregion. This passes a list of devices to
650 * the firmware. Values are defined by section B.4.2 of the ACPI specification
654 static void set_did(struct intel_opregion *opregion, int i, u32 val)
656 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
657 opregion->acpi->didl[i] = val;
659 i -= ARRAY_SIZE(opregion->acpi->didl);
661 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
664 opregion->acpi->did2[i] = val;
668 static void intel_didl_outputs(struct drm_i915_private *dev_priv)
670 struct intel_opregion *opregion = &dev_priv->opregion;
671 struct intel_connector *connector;
672 struct drm_connector_list_iter conn_iter;
673 int i = 0, max_outputs;
676 * In theory, did2, the extended didl, gets added at opregion version
677 * 3.0. In practice, however, we're supposed to set it for earlier
678 * versions as well, since a BIOS that doesn't understand did2 should
679 * not look at it anyway. Use a variable so we can tweak this if a need
682 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
683 ARRAY_SIZE(opregion->acpi->did2);
685 intel_acpi_device_id_update(dev_priv);
687 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
688 for_each_intel_connector_iter(connector, &conn_iter) {
690 set_did(opregion, i, connector->acpi_device_id);
693 drm_connector_list_iter_end(&conn_iter);
695 drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i);
698 drm_err(&dev_priv->drm,
699 "More than %d outputs in connector list\n",
702 /* If fewer than max outputs, the list must be null terminated */
704 set_did(opregion, i, 0);
707 static void intel_setup_cadls(struct drm_i915_private *dev_priv)
709 struct intel_opregion *opregion = &dev_priv->opregion;
710 struct intel_connector *connector;
711 struct drm_connector_list_iter conn_iter;
715 * Initialize the CADL field from the connector device ids. This is
716 * essentially the same as copying from the DIDL. Technically, this is
717 * not always correct as display outputs may exist, but not active. This
718 * initialization is necessary for some Clevo laptops that check this
719 * field before processing the brightness and display switching hotkeys.
721 * Note that internal panels should be at the front of the connector
722 * list already, ensuring they're not left out.
724 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
725 for_each_intel_connector_iter(connector, &conn_iter) {
726 if (i >= ARRAY_SIZE(opregion->acpi->cadl))
728 opregion->acpi->cadl[i++] = connector->acpi_device_id;
730 drm_connector_list_iter_end(&conn_iter);
732 /* If fewer than 8 active devices, the list must be null terminated */
733 if (i < ARRAY_SIZE(opregion->acpi->cadl))
734 opregion->acpi->cadl[i] = 0;
737 static void swsci_setup(struct drm_i915_private *dev_priv)
739 struct intel_opregion *opregion = &dev_priv->opregion;
740 bool requested_callbacks = false;
743 /* Sub-function code 0 is okay, let's allow them. */
744 opregion->swsci_gbda_sub_functions = 1;
745 opregion->swsci_sbcb_sub_functions = 1;
747 /* We use GBDA to ask for supported GBDA calls. */
748 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
749 /* make the bits match the sub-function codes */
751 opregion->swsci_gbda_sub_functions |= tmp;
755 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
756 * must not call interfaces that are not specifically requested by the
759 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
760 /* here, the bits already match sub-function codes */
761 opregion->swsci_sbcb_sub_functions |= tmp;
762 requested_callbacks = true;
766 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
767 * the callback is _requested_. But we still can't call interfaces that
770 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
771 /* make the bits match the sub-function codes */
772 u32 low = tmp & 0x7ff;
773 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
774 tmp = (high << 4) | (low << 1) | 1;
776 /* best guess what to do with supported wrt requested */
777 if (requested_callbacks) {
778 u32 req = opregion->swsci_sbcb_sub_functions;
779 if ((req & tmp) != req)
780 drm_dbg(&dev_priv->drm,
781 "SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n",
783 /* XXX: for now, trust the requested callbacks */
784 /* opregion->swsci_sbcb_sub_functions &= tmp; */
786 opregion->swsci_sbcb_sub_functions |= tmp;
790 drm_dbg(&dev_priv->drm,
791 "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
792 opregion->swsci_gbda_sub_functions,
793 opregion->swsci_sbcb_sub_functions);
796 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
798 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
799 "VBIOS ROM for %s\n", id->ident);
803 static const struct dmi_system_id intel_no_opregion_vbt[] = {
805 .callback = intel_no_opregion_vbt_callback,
806 .ident = "ThinkCentre A57",
808 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
809 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
815 static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
817 struct intel_opregion *opregion = &dev_priv->opregion;
818 const struct firmware *fw = NULL;
819 const char *name = dev_priv->params.vbt_firmware;
825 ret = reject_firmware(&fw, name, &dev_priv->drm.pdev->dev);
827 drm_err(&dev_priv->drm,
828 "Requesting VBT firmware \"%s\" failed (%d)\n",
833 if (intel_bios_is_valid_vbt(fw->data, fw->size)) {
834 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL);
835 if (opregion->vbt_firmware) {
836 drm_dbg_kms(&dev_priv->drm,
837 "Found valid VBT firmware \"%s\"\n", name);
838 opregion->vbt = opregion->vbt_firmware;
839 opregion->vbt_size = fw->size;
845 drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n",
850 release_firmware(fw);
855 int intel_opregion_setup(struct drm_i915_private *dev_priv)
857 struct intel_opregion *opregion = &dev_priv->opregion;
858 struct pci_dev *pdev = dev_priv->drm.pdev;
860 char buf[sizeof(OPREGION_SIGNATURE)];
866 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
867 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
868 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
869 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
870 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
872 pci_read_config_dword(pdev, ASLS, &asls);
873 drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n",
876 drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n");
880 INIT_WORK(&opregion->asle_work, asle_work);
882 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
886 memcpy(buf, base, sizeof(buf));
888 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
889 drm_dbg(&dev_priv->drm, "opregion signature mismatch\n");
893 opregion->header = base;
894 opregion->lid_state = base + ACPI_CLID;
896 drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n",
897 opregion->header->over.major,
898 opregion->header->over.minor,
899 opregion->header->over.revision);
901 mboxes = opregion->header->mboxes;
902 if (mboxes & MBOX_ACPI) {
903 drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n");
904 opregion->acpi = base + OPREGION_ACPI_OFFSET;
906 * Indicate we handle monitor hotplug events ourselves so we do
907 * not need ACPI notifications for them. Disabling these avoids
908 * triggering the AML code doing the notifation, which may be
909 * broken as Windows also seems to disable these.
911 opregion->acpi->chpd = 1;
914 if (mboxes & MBOX_SWSCI) {
915 drm_dbg(&dev_priv->drm, "SWSCI supported\n");
916 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
917 swsci_setup(dev_priv);
920 if (mboxes & MBOX_ASLE) {
921 drm_dbg(&dev_priv->drm, "ASLE supported\n");
922 opregion->asle = base + OPREGION_ASLE_OFFSET;
924 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
927 if (mboxes & MBOX_ASLE_EXT)
928 drm_dbg(&dev_priv->drm, "ASLE extension supported\n");
930 if (intel_load_vbt_firmware(dev_priv) == 0)
933 if (dmi_check_system(intel_no_opregion_vbt))
936 if (opregion->header->over.major >= 2 && opregion->asle &&
937 opregion->asle->rvda && opregion->asle->rvds) {
938 resource_size_t rvda = opregion->asle->rvda;
941 * opregion 2.0: rvda is the physical VBT address.
943 * opregion 2.1+: rvda is unsigned, relative offset from
944 * opregion base, and should never point within opregion.
946 if (opregion->header->over.major > 2 ||
947 opregion->header->over.minor >= 1) {
948 drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE);
953 opregion->rvda = memremap(rvda, opregion->asle->rvds,
956 vbt = opregion->rvda;
957 vbt_size = opregion->asle->rvds;
958 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
959 drm_dbg_kms(&dev_priv->drm,
960 "Found valid VBT in ACPI OpRegion (RVDA)\n");
962 opregion->vbt_size = vbt_size;
965 drm_dbg_kms(&dev_priv->drm,
966 "Invalid VBT in ACPI OpRegion (RVDA)\n");
967 memunmap(opregion->rvda);
968 opregion->rvda = NULL;
972 vbt = base + OPREGION_VBT_OFFSET;
974 * The VBT specification says that if the ASLE ext mailbox is not used
975 * its area is reserved, but on some CHT boards the VBT extends into the
976 * ASLE ext area. Allow this even though it is against the spec, so we
977 * do not end up rejecting the VBT on those boards (and end up not
978 * finding the LCD panel because of this).
980 vbt_size = (mboxes & MBOX_ASLE_EXT) ?
981 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
982 vbt_size -= OPREGION_VBT_OFFSET;
983 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
984 drm_dbg_kms(&dev_priv->drm,
985 "Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
987 opregion->vbt_size = vbt_size;
989 drm_dbg_kms(&dev_priv->drm,
990 "Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
1001 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1003 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1007 static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1009 .callback = intel_use_opregion_panel_type_callback,
1010 .ident = "Conrac GmbH IX45GM2",
1011 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1012 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1019 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1024 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1026 drm_dbg_kms(&dev_priv->drm,
1027 "Failed to get panel details from OpRegion (%d)\n",
1032 ret = (panel_details >> 8) & 0xff;
1034 drm_dbg_kms(&dev_priv->drm,
1035 "Invalid OpRegion panel type 0x%x\n", ret);
1039 /* fall back to VBT panel type? */
1041 drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n");
1046 * So far we know that some machined must use it, others must not use it.
1047 * There doesn't seem to be any way to determine which way to go, except
1048 * via a quirk list :(
1050 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1051 drm_dbg_kms(&dev_priv->drm,
1052 "Ignoring OpRegion panel type (%d)\n", ret - 1);
1059 void intel_opregion_register(struct drm_i915_private *i915)
1061 struct intel_opregion *opregion = &i915->opregion;
1063 if (!opregion->header)
1066 if (opregion->acpi) {
1067 opregion->acpi_notifier.notifier_call =
1068 intel_opregion_video_event;
1069 register_acpi_notifier(&opregion->acpi_notifier);
1072 intel_opregion_resume(i915);
1075 void intel_opregion_resume(struct drm_i915_private *i915)
1077 struct intel_opregion *opregion = &i915->opregion;
1079 if (!opregion->header)
1082 if (opregion->acpi) {
1083 intel_didl_outputs(i915);
1084 intel_setup_cadls(i915);
1087 * Notify BIOS we are ready to handle ACPI video ext notifs.
1088 * Right now, all the events are handled by the ACPI video
1089 * module. We don't actually need to do anything with them.
1091 opregion->acpi->csts = 0;
1092 opregion->acpi->drdy = 1;
1095 if (opregion->asle) {
1096 opregion->asle->tche = ASLE_TCHE_BLC_EN;
1097 opregion->asle->ardy = ASLE_ARDY_READY;
1100 intel_opregion_notify_adapter(i915, PCI_D0);
1103 void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state)
1105 struct intel_opregion *opregion = &i915->opregion;
1107 if (!opregion->header)
1110 intel_opregion_notify_adapter(i915, state);
1113 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
1115 cancel_work_sync(&i915->opregion.asle_work);
1118 opregion->acpi->drdy = 0;
1121 void intel_opregion_unregister(struct drm_i915_private *i915)
1123 struct intel_opregion *opregion = &i915->opregion;
1125 intel_opregion_suspend(i915, PCI_D1);
1127 if (!opregion->header)
1130 if (opregion->acpi_notifier.notifier_call) {
1131 unregister_acpi_notifier(&opregion->acpi_notifier);
1132 opregion->acpi_notifier.notifier_call = NULL;
1135 /* just clear all opregion memory pointers now */
1136 memunmap(opregion->header);
1137 if (opregion->rvda) {
1138 memunmap(opregion->rvda);
1139 opregion->rvda = NULL;
1141 if (opregion->vbt_firmware) {
1142 kfree(opregion->vbt_firmware);
1143 opregion->vbt_firmware = NULL;
1145 opregion->header = NULL;
1146 opregion->acpi = NULL;
1147 opregion->swsci = NULL;
1148 opregion->asle = NULL;
1149 opregion->vbt = NULL;
1150 opregion->lid_state = NULL;