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>
41 #define PCI_SWSCI 0xe8
42 #define PCI_SWSCI_SCISEL (1 << 15)
43 #define PCI_SWSCI_GSSCIE (1 << 0)
45 #define OPREGION_HEADER_OFFSET 0
46 #define OPREGION_ACPI_OFFSET 0x100
47 #define ACPI_CLID 0x01ac /* current lid state indicator */
48 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
49 #define OPREGION_SWSCI_OFFSET 0x200
50 #define OPREGION_ASLE_OFFSET 0x300
51 #define OPREGION_VBT_OFFSET 0x400
52 #define OPREGION_ASLE_EXT_OFFSET 0x1C00
54 #define OPREGION_SIGNATURE "IntelGraphicsMem"
55 #define MBOX_ACPI (1<<0)
56 #define MBOX_SWSCI (1<<1)
57 #define MBOX_ASLE (1<<2)
58 #define MBOX_ASLE_EXT (1<<4)
60 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 address of raw vbt data */
128 u32 rvds; /* Size of raw vbt data */
132 /* OpRegion mailbox #5: ASLE ext */
133 struct opregion_asle_ext {
134 u32 phed; /* Panel Header */
135 u8 bddc[256]; /* Panel EDID */
139 /* Driver readiness indicator */
140 #define ASLE_ARDY_READY (1 << 0)
141 #define ASLE_ARDY_NOT_READY (0 << 0)
143 /* ASLE Interrupt Command (ASLC) bits */
144 #define ASLC_SET_ALS_ILLUM (1 << 0)
145 #define ASLC_SET_BACKLIGHT (1 << 1)
146 #define ASLC_SET_PFIT (1 << 2)
147 #define ASLC_SET_PWM_FREQ (1 << 3)
148 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
149 #define ASLC_BUTTON_ARRAY (1 << 5)
150 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
151 #define ASLC_DOCKING_INDICATOR (1 << 7)
152 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
153 #define ASLC_REQ_MSK 0x1ff
155 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
156 #define ASLC_BACKLIGHT_FAILED (1 << 12)
157 #define ASLC_PFIT_FAILED (1 << 14)
158 #define ASLC_PWM_FREQ_FAILED (1 << 16)
159 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
160 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
161 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
162 #define ASLC_DOCKING_FAILED (1 << 24)
163 #define ASLC_ISCT_STATE_FAILED (1 << 26)
165 /* Technology enabled indicator */
166 #define ASLE_TCHE_ALS_EN (1 << 0)
167 #define ASLE_TCHE_BLC_EN (1 << 1)
168 #define ASLE_TCHE_PFIT_EN (1 << 2)
169 #define ASLE_TCHE_PFMB_EN (1 << 3)
171 /* ASLE backlight brightness to set */
172 #define ASLE_BCLP_VALID (1<<31)
173 #define ASLE_BCLP_MSK (~(1<<31))
175 /* ASLE panel fitting request */
176 #define ASLE_PFIT_VALID (1<<31)
177 #define ASLE_PFIT_CENTER (1<<0)
178 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
179 #define ASLE_PFIT_STRETCH_GFX (1<<2)
181 /* PWM frequency and minimum brightness */
182 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
183 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
184 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
185 #define ASLE_PFMB_PWM_VALID (1<<31)
187 #define ASLE_CBLV_VALID (1<<31)
190 #define ASLE_IUER_DOCKING (1 << 7)
191 #define ASLE_IUER_CONVERTIBLE (1 << 6)
192 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
193 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
194 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
195 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
196 #define ASLE_IUER_POWER_BTN (1 << 0)
198 /* Software System Control Interrupt (SWSCI) */
199 #define SWSCI_SCIC_INDICATOR (1 << 0)
200 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
201 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
202 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
203 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
204 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
205 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
206 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
207 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
208 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
210 #define SWSCI_FUNCTION_CODE(main, sub) \
211 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
212 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
214 /* SWSCI: Get BIOS Data (GBDA) */
216 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
217 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
218 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
219 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
220 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
221 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
222 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
224 /* SWSCI: System BIOS Callbacks (SBCB) */
226 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
227 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
228 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
229 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
230 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
231 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
232 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
233 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
234 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
235 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
236 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
237 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
238 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
239 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
240 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
241 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
243 #define ACPI_OTHER_OUTPUT (0<<8)
244 #define ACPI_VGA_OUTPUT (1<<8)
245 #define ACPI_TV_OUTPUT (2<<8)
246 #define ACPI_DIGITAL_OUTPUT (3<<8)
247 #define ACPI_LVDS_OUTPUT (4<<8)
249 #define MAX_DSLP 1500
252 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
254 struct drm_i915_private *dev_priv = dev->dev_private;
255 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
256 u32 main_function, sub_function, scic;
263 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
264 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
265 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
266 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
268 /* Check if we can call the function. See swsci_setup for details. */
269 if (main_function == SWSCI_SBCB) {
270 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
271 (1 << sub_function)) == 0)
273 } else if (main_function == SWSCI_GBDA) {
274 if ((dev_priv->opregion.swsci_gbda_sub_functions &
275 (1 << sub_function)) == 0)
279 /* Driver sleep timeout in ms. */
282 /* The spec says 2ms should be the default, but it's too small
283 * for some machines. */
285 } else if (dslp > MAX_DSLP) {
286 /* Hey bios, trust must be earned. */
287 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
288 "using %u ms instead\n", dslp, MAX_DSLP);
292 /* The spec tells us to do this, but we are the only user... */
294 if (scic & SWSCI_SCIC_INDICATOR) {
295 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
299 scic = function | SWSCI_SCIC_INDICATOR;
304 /* Ensure SCI event is selected and event trigger is cleared. */
305 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci);
306 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) {
307 pci_swsci |= PCI_SWSCI_SCISEL;
308 pci_swsci &= ~PCI_SWSCI_GSSCIE;
309 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
312 /* Use event trigger to tell bios to check the mail. */
313 pci_swsci |= PCI_SWSCI_GSSCIE;
314 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
316 /* Poll for the result. */
317 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
318 if (wait_for(C, dslp)) {
319 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
323 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
324 SWSCI_SCIC_EXIT_STATUS_SHIFT;
326 /* Note: scic == 0 is an error! */
327 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
328 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
333 *parm_out = swsci->parm;
340 #define DISPLAY_TYPE_CRT 0
341 #define DISPLAY_TYPE_TV 1
342 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
343 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
345 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
348 struct drm_device *dev = intel_encoder->base.dev;
353 /* don't care about old stuff for now */
357 if (intel_encoder->type == INTEL_OUTPUT_DSI)
360 port = intel_ddi_get_encoder_port(intel_encoder);
362 if (port == PORT_E) {
372 switch (intel_encoder->type) {
373 case INTEL_OUTPUT_ANALOG:
374 type = DISPLAY_TYPE_CRT;
376 case INTEL_OUTPUT_UNKNOWN:
377 case INTEL_OUTPUT_DISPLAYPORT:
378 case INTEL_OUTPUT_HDMI:
379 case INTEL_OUTPUT_DP_MST:
380 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
382 case INTEL_OUTPUT_EDP:
383 case INTEL_OUTPUT_DSI:
384 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
387 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
388 intel_encoder->type);
392 parm |= type << (16 + port * 3);
394 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
397 static const struct {
398 pci_power_t pci_power_state;
400 } power_state_map[] = {
405 { PCI_D3cold, 0x04 },
408 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
415 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
416 if (state == power_state_map[i].pci_power_state)
417 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE,
418 power_state_map[i].parm, NULL);
424 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
426 struct drm_i915_private *dev_priv = dev->dev_private;
427 struct intel_connector *connector;
428 struct opregion_asle *asle = dev_priv->opregion.asle;
430 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
432 #ifndef __DragonFly__
433 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
434 DRM_DEBUG_KMS("opregion backlight request ignored\n");
439 if (!(bclp & ASLE_BCLP_VALID))
440 return ASLC_BACKLIGHT_FAILED;
442 bclp &= ASLE_BCLP_MSK;
444 return ASLC_BACKLIGHT_FAILED;
446 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
449 * Update backlight on all connectors that support backlight (usually
452 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
453 for_each_intel_connector(dev, connector)
454 intel_panel_set_backlight_acpi(connector, bclp, 255);
455 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
457 drm_modeset_unlock(&dev->mode_config.connection_mutex);
463 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
465 /* alsi is the current ALS reading in lux. 0 indicates below sensor
466 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
467 DRM_DEBUG_DRIVER("Illum is not supported\n");
468 return ASLC_ALS_ILLUM_FAILED;
471 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
473 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
474 return ASLC_PWM_FREQ_FAILED;
477 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
479 /* Panel fitting is currently controlled by the X code, so this is a
480 noop until modesetting support works fully */
481 DRM_DEBUG_DRIVER("Pfit is not supported\n");
482 return ASLC_PFIT_FAILED;
485 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot)
487 DRM_DEBUG_DRIVER("SROT is not supported\n");
488 return ASLC_ROTATION_ANGLES_FAILED;
491 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer)
494 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
495 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
496 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
497 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
498 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
499 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
500 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
501 if (iuer & ASLE_IUER_WINDOWS_BTN)
502 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
503 if (iuer & ASLE_IUER_POWER_BTN)
504 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
506 return ASLC_BUTTON_ARRAY_FAILED;
509 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer)
511 if (iuer & ASLE_IUER_CONVERTIBLE)
512 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
514 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
516 return ASLC_CONVERTIBLE_FAILED;
519 static u32 asle_set_docking(struct drm_device *dev, u32 iuer)
521 if (iuer & ASLE_IUER_DOCKING)
522 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
524 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
526 return ASLC_DOCKING_FAILED;
529 static u32 asle_isct_state(struct drm_device *dev)
531 DRM_DEBUG_DRIVER("ISCT is not supported\n");
532 return ASLC_ISCT_STATE_FAILED;
535 static void asle_work(struct work_struct *work)
537 struct intel_opregion *opregion =
538 container_of(work, struct intel_opregion, asle_work);
539 struct drm_i915_private *dev_priv =
540 container_of(opregion, struct drm_i915_private, opregion);
541 struct drm_device *dev = dev_priv->dev;
542 struct opregion_asle *asle = dev_priv->opregion.asle;
549 aslc_req = asle->aslc;
551 if (!(aslc_req & ASLC_REQ_MSK)) {
552 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
557 if (aslc_req & ASLC_SET_ALS_ILLUM)
558 aslc_stat |= asle_set_als_illum(dev, asle->alsi);
560 if (aslc_req & ASLC_SET_BACKLIGHT)
561 aslc_stat |= asle_set_backlight(dev, asle->bclp);
563 if (aslc_req & ASLC_SET_PFIT)
564 aslc_stat |= asle_set_pfit(dev, asle->pfit);
566 if (aslc_req & ASLC_SET_PWM_FREQ)
567 aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb);
569 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
570 aslc_stat |= asle_set_supported_rotation_angles(dev,
573 if (aslc_req & ASLC_BUTTON_ARRAY)
574 aslc_stat |= asle_set_button_array(dev, asle->iuer);
576 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
577 aslc_stat |= asle_set_convertible(dev, asle->iuer);
579 if (aslc_req & ASLC_DOCKING_INDICATOR)
580 aslc_stat |= asle_set_docking(dev, asle->iuer);
582 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
583 aslc_stat |= asle_isct_state(dev);
585 asle->aslc = aslc_stat;
588 void intel_opregion_asle_intr(struct drm_device *dev)
590 struct drm_i915_private *dev_priv = dev->dev_private;
592 if (dev_priv->opregion.asle)
593 schedule_work(&dev_priv->opregion.asle_work);
596 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
597 #define ACPI_EV_LID (1<<1)
598 #define ACPI_EV_DOCK (1<<2)
600 static struct intel_opregion *system_opregion;
603 static int intel_opregion_video_event(struct notifier_block *nb,
604 unsigned long val, void *data)
606 /* The only video events relevant to opregion are 0x80. These indicate
607 either a docking event, lid switch or display switch request. In
608 Linux, these are handled by the dock, button and video drivers.
611 struct acpi_bus_event *event = data;
612 struct opregion_acpi *acpi;
615 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
618 if (!system_opregion)
621 acpi = system_opregion->acpi;
623 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
631 static struct notifier_block intel_opregion_notifier = {
632 .notifier_call = intel_opregion_video_event,
636 static int acpi_is_video_device(ACPI_HANDLE devh) {
638 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) ||
639 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) {
646 * Initialise the DIDL field in opregion. This passes a list of devices to
647 * the firmware. Values are defined by section B.4.2 of the ACPI specification
651 static u32 get_did(struct intel_opregion *opregion, int i)
655 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
656 did = opregion->acpi->didl[i];
658 i -= ARRAY_SIZE(opregion->acpi->didl);
660 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
663 did = opregion->acpi->did2[i];
669 static void set_did(struct intel_opregion *opregion, int i, u32 val)
671 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
672 opregion->acpi->didl[i] = val;
674 i -= ARRAY_SIZE(opregion->acpi->didl);
676 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
679 opregion->acpi->did2[i] = val;
683 static void intel_didl_outputs(struct drm_device *dev)
685 struct drm_i915_private *dev_priv = dev->dev_private;
686 struct intel_opregion *opregion = &dev_priv->opregion;
687 struct drm_connector *connector;
688 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus;
691 u32 temp, max_outputs;
694 handle = acpi_get_handle(dev->dev->bsddev);
698 if (acpi_is_video_device(handle))
699 acpi_video_bus = handle;
702 acpi_video_bus = NULL;
703 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev,
704 &acpi_cdev) != AE_NOT_FOUND) {
705 if (acpi_is_video_device(acpi_cdev)) {
706 acpi_video_bus = acpi_cdev;
712 if (!acpi_video_bus) {
713 DRM_DEBUG_KMS("No ACPI video bus found\n");
718 * In theory, did2, the extended didl, gets added at opregion version
719 * 3.0. In practice, however, we're supposed to set it for earlier
720 * versions as well, since a BIOS that doesn't understand did2 should
721 * not look at it anyway. Use a variable so we can tweak this if a need
724 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
725 ARRAY_SIZE(opregion->acpi->did2);
730 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev,
731 &acpi_cdev) != AE_NOT_FOUND) {
732 if (i >= max_outputs) {
733 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
737 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id);
738 if (ACPI_SUCCESS(status)) {
741 set_did(opregion, i++, (u32)(device_id & 0x0f0f));
746 DRM_DEBUG_KMS("%d outputs detected\n", i);
748 /* If fewer than max outputs, the list must be null terminated */
750 set_did(opregion, i, 0);
755 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
756 int output_type = ACPI_OTHER_OUTPUT;
757 if (i >= max_outputs) {
758 DRM_DEBUG_KMS("More than %u outputs in connector list\n",
762 switch (connector->connector_type) {
763 case DRM_MODE_CONNECTOR_VGA:
764 case DRM_MODE_CONNECTOR_DVIA:
765 output_type = ACPI_VGA_OUTPUT;
767 case DRM_MODE_CONNECTOR_Composite:
768 case DRM_MODE_CONNECTOR_SVIDEO:
769 case DRM_MODE_CONNECTOR_Component:
770 case DRM_MODE_CONNECTOR_9PinDIN:
771 output_type = ACPI_TV_OUTPUT;
773 case DRM_MODE_CONNECTOR_DVII:
774 case DRM_MODE_CONNECTOR_DVID:
775 case DRM_MODE_CONNECTOR_DisplayPort:
776 case DRM_MODE_CONNECTOR_HDMIA:
777 case DRM_MODE_CONNECTOR_HDMIB:
778 output_type = ACPI_DIGITAL_OUTPUT;
780 case DRM_MODE_CONNECTOR_LVDS:
781 output_type = ACPI_LVDS_OUTPUT;
784 temp = get_did(opregion, i);
785 set_did(opregion, i, temp | (1 << 31) | output_type | i);
791 static void intel_setup_cadls(struct drm_device *dev)
793 struct drm_i915_private *dev_priv = dev->dev_private;
794 struct intel_opregion *opregion = &dev_priv->opregion;
798 /* Initialize the CADL field by duplicating the DIDL values.
799 * Technically, this is not always correct as display outputs may exist,
800 * but not active. This initialization is necessary for some Clevo
801 * laptops that check this field before processing the brightness and
802 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
803 * there are less than eight devices. */
805 disp_id = get_did(opregion, i);
806 opregion->acpi->cadl[i] = disp_id;
807 } while (++i < 8 && disp_id != 0);
810 void intel_opregion_init(struct drm_device *dev)
812 struct drm_i915_private *dev_priv = dev->dev_private;
813 struct intel_opregion *opregion = &dev_priv->opregion;
815 if (!opregion->header)
818 if (opregion->acpi) {
819 intel_didl_outputs(dev);
820 intel_setup_cadls(dev);
822 /* Notify BIOS we are ready to handle ACPI video ext notifs.
823 * Right now, all the events are handled by the ACPI video module.
824 * We don't actually need to do anything with them. */
825 opregion->acpi->csts = 0;
826 opregion->acpi->drdy = 1;
828 system_opregion = opregion;
831 if (opregion->asle) {
832 opregion->asle->tche = ASLE_TCHE_BLC_EN;
833 opregion->asle->ardy = ASLE_ARDY_READY;
837 void intel_opregion_fini(struct drm_device *dev)
839 struct drm_i915_private *dev_priv = dev->dev_private;
840 struct intel_opregion *opregion = &dev_priv->opregion;
842 if (!opregion->header)
846 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
848 cancel_work_sync(&dev_priv->opregion.asle_work);
850 if (opregion->acpi) {
851 opregion->acpi->drdy = 0;
853 system_opregion = NULL;
856 /* just clear all opregion memory pointers now */
857 iounmap(opregion->header);
858 if (opregion->rvda) {
859 iounmap(opregion->rvda);
860 opregion->rvda = NULL;
862 opregion->header = NULL;
863 opregion->acpi = NULL;
864 opregion->swsci = NULL;
865 opregion->asle = NULL;
866 opregion->vbt = NULL;
867 opregion->lid_state = NULL;
870 static void swsci_setup(struct drm_device *dev)
872 struct drm_i915_private *dev_priv = dev->dev_private;
873 struct intel_opregion *opregion = &dev_priv->opregion;
874 bool requested_callbacks = false;
877 /* Sub-function code 0 is okay, let's allow them. */
878 opregion->swsci_gbda_sub_functions = 1;
879 opregion->swsci_sbcb_sub_functions = 1;
881 /* We use GBDA to ask for supported GBDA calls. */
882 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
883 /* make the bits match the sub-function codes */
885 opregion->swsci_gbda_sub_functions |= tmp;
889 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
890 * must not call interfaces that are not specifically requested by the
893 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
894 /* here, the bits already match sub-function codes */
895 opregion->swsci_sbcb_sub_functions |= tmp;
896 requested_callbacks = true;
900 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
901 * the callback is _requested_. But we still can't call interfaces that
904 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
905 /* make the bits match the sub-function codes */
906 u32 low = tmp & 0x7ff;
907 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
908 tmp = (high << 4) | (low << 1) | 1;
910 /* best guess what to do with supported wrt requested */
911 if (requested_callbacks) {
912 u32 req = opregion->swsci_sbcb_sub_functions;
913 if ((req & tmp) != req)
914 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
915 /* XXX: for now, trust the requested callbacks */
916 /* opregion->swsci_sbcb_sub_functions &= tmp; */
918 opregion->swsci_sbcb_sub_functions |= tmp;
922 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
923 opregion->swsci_gbda_sub_functions,
924 opregion->swsci_sbcb_sub_functions);
926 #else /* CONFIG_ACPI */
927 static inline void swsci_setup(struct drm_device *dev) {}
928 #endif /* CONFIG_ACPI */
930 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
932 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
933 "VBIOS ROM for %s\n", id->ident);
937 static const struct dmi_system_id intel_no_opregion_vbt[] = {
939 .callback = intel_no_opregion_vbt_callback,
940 .ident = "ThinkCentre A57",
942 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
943 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
949 int intel_opregion_setup(struct drm_device *dev)
951 struct drm_i915_private *dev_priv = dev->dev_private;
952 struct intel_opregion *opregion = &dev_priv->opregion;
954 char buf[sizeof(OPREGION_SIGNATURE)];
958 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
959 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
960 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
961 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
962 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
964 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
965 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
967 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
972 INIT_WORK(&opregion->asle_work, asle_work);
975 base = (void *)pmap_mapbios(asls, OPREGION_SIZE);
979 memcpy(buf, base, sizeof(buf));
981 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
982 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
986 opregion->header = (struct opregion_header *)base;
988 opregion->lid_state = (u32 *)(base + ACPI_CLID);
990 mboxes = opregion->header->mboxes;
991 if (mboxes & MBOX_ACPI) {
992 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
993 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET);
996 if (mboxes & MBOX_SWSCI) {
997 DRM_DEBUG_DRIVER("SWSCI supported\n");
998 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET);
1002 if (mboxes & MBOX_ASLE) {
1003 DRM_DEBUG_DRIVER("ASLE supported\n");
1004 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET);
1006 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
1009 if (mboxes & MBOX_ASLE_EXT)
1010 DRM_DEBUG_DRIVER("ASLE extension supported\n");
1012 if (!dmi_check_system(intel_no_opregion_vbt)) {
1013 const void *vbt = NULL;
1016 if (opregion->header->opregion_ver >= 2 && opregion->asle &&
1017 opregion->asle->rvda && opregion->asle->rvds) {
1018 opregion->rvda = pmap_mapbios(opregion->asle->rvda,
1019 opregion->asle->rvds);
1020 vbt = opregion->rvda;
1021 vbt_size = opregion->asle->rvds;
1024 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1025 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
1026 opregion->vbt = vbt;
1027 opregion->vbt_size = vbt_size;
1029 vbt = base + OPREGION_VBT_OFFSET;
1030 vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET;
1031 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1032 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1033 opregion->vbt = vbt;
1034 opregion->vbt_size = vbt_size;