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)
237 #define ACPI_OTHER_OUTPUT (0<<8)
238 #define ACPI_VGA_OUTPUT (1<<8)
239 #define ACPI_TV_OUTPUT (2<<8)
240 #define ACPI_DIGITAL_OUTPUT (3<<8)
241 #define ACPI_LVDS_OUTPUT (4<<8)
243 #define MAX_DSLP 1500
245 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
247 struct drm_i915_private *dev_priv = dev->dev_private;
248 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
249 u32 main_function, sub_function, scic;
256 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
257 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
258 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
259 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
261 /* Check if we can call the function. See swsci_setup for details. */
262 if (main_function == SWSCI_SBCB) {
263 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
264 (1 << sub_function)) == 0)
266 } else if (main_function == SWSCI_GBDA) {
267 if ((dev_priv->opregion.swsci_gbda_sub_functions &
268 (1 << sub_function)) == 0)
272 /* Driver sleep timeout in ms. */
275 /* The spec says 2ms should be the default, but it's too small
276 * for some machines. */
278 } else if (dslp > MAX_DSLP) {
279 /* Hey bios, trust must be earned. */
280 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
281 "using %u ms instead\n", dslp, MAX_DSLP);
285 /* The spec tells us to do this, but we are the only user... */
287 if (scic & SWSCI_SCIC_INDICATOR) {
288 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
292 scic = function | SWSCI_SCIC_INDICATOR;
297 /* Ensure SCI event is selected and event trigger is cleared. */
298 pci_read_config_word(dev->pdev, SWSCI, &swsci_val);
299 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
300 swsci_val |= SWSCI_SCISEL;
301 swsci_val &= ~SWSCI_GSSCIE;
302 pci_write_config_word(dev->pdev, SWSCI, swsci_val);
305 /* Use event trigger to tell bios to check the mail. */
306 swsci_val |= SWSCI_GSSCIE;
307 pci_write_config_word(dev->pdev, SWSCI, swsci_val);
309 /* Poll for the result. */
310 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
311 if (wait_for(C, dslp)) {
312 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
316 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
317 SWSCI_SCIC_EXIT_STATUS_SHIFT;
319 /* Note: scic == 0 is an error! */
320 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
321 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
326 *parm_out = swsci->parm;
333 #define DISPLAY_TYPE_CRT 0
334 #define DISPLAY_TYPE_TV 1
335 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
336 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
338 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
341 struct drm_device *dev = intel_encoder->base.dev;
346 /* don't care about old stuff for now */
350 if (intel_encoder->type == INTEL_OUTPUT_DSI)
353 port = intel_ddi_get_encoder_port(intel_encoder);
355 if (port == PORT_E) {
365 switch (intel_encoder->type) {
366 case INTEL_OUTPUT_ANALOG:
367 type = DISPLAY_TYPE_CRT;
369 case INTEL_OUTPUT_UNKNOWN:
370 case INTEL_OUTPUT_DISPLAYPORT:
371 case INTEL_OUTPUT_HDMI:
372 case INTEL_OUTPUT_DP_MST:
373 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
375 case INTEL_OUTPUT_EDP:
376 case INTEL_OUTPUT_DSI:
377 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
380 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
381 intel_encoder->type);
385 parm |= type << (16 + port * 3);
387 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
390 static const struct {
391 pci_power_t pci_power_state;
393 } power_state_map[] = {
398 { PCI_D3cold, 0x04 },
401 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
408 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
409 if (state == power_state_map[i].pci_power_state)
410 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE,
411 power_state_map[i].parm, NULL);
417 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
419 struct drm_i915_private *dev_priv = dev->dev_private;
420 struct intel_connector *connector;
421 struct opregion_asle *asle = dev_priv->opregion.asle;
423 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
425 #ifndef __DragonFly__
426 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
427 DRM_DEBUG_KMS("opregion backlight request ignored\n");
432 if (!(bclp & ASLE_BCLP_VALID))
433 return ASLC_BACKLIGHT_FAILED;
435 bclp &= ASLE_BCLP_MSK;
437 return ASLC_BACKLIGHT_FAILED;
439 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
442 * Update backlight on all connectors that support backlight (usually
445 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
446 for_each_intel_connector(dev, connector)
447 intel_panel_set_backlight_acpi(connector, bclp, 255);
448 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
450 drm_modeset_unlock(&dev->mode_config.connection_mutex);
456 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
458 /* alsi is the current ALS reading in lux. 0 indicates below sensor
459 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
460 DRM_DEBUG_DRIVER("Illum is not supported\n");
461 return ASLC_ALS_ILLUM_FAILED;
464 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
466 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
467 return ASLC_PWM_FREQ_FAILED;
470 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
472 /* Panel fitting is currently controlled by the X code, so this is a
473 noop until modesetting support works fully */
474 DRM_DEBUG_DRIVER("Pfit is not supported\n");
475 return ASLC_PFIT_FAILED;
478 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot)
480 DRM_DEBUG_DRIVER("SROT is not supported\n");
481 return ASLC_ROTATION_ANGLES_FAILED;
484 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer)
487 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
488 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
489 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
490 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
491 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
492 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
493 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
494 if (iuer & ASLE_IUER_WINDOWS_BTN)
495 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
496 if (iuer & ASLE_IUER_POWER_BTN)
497 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
499 return ASLC_BUTTON_ARRAY_FAILED;
502 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer)
504 if (iuer & ASLE_IUER_CONVERTIBLE)
505 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
507 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
509 return ASLC_CONVERTIBLE_FAILED;
512 static u32 asle_set_docking(struct drm_device *dev, u32 iuer)
514 if (iuer & ASLE_IUER_DOCKING)
515 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
517 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
519 return ASLC_DOCKING_FAILED;
522 static u32 asle_isct_state(struct drm_device *dev)
524 DRM_DEBUG_DRIVER("ISCT is not supported\n");
525 return ASLC_ISCT_STATE_FAILED;
528 static void asle_work(struct work_struct *work)
530 struct intel_opregion *opregion =
531 container_of(work, struct intel_opregion, asle_work);
532 struct drm_i915_private *dev_priv =
533 container_of(opregion, struct drm_i915_private, opregion);
534 struct drm_device *dev = dev_priv->dev;
535 struct opregion_asle *asle = dev_priv->opregion.asle;
542 aslc_req = asle->aslc;
544 if (!(aslc_req & ASLC_REQ_MSK)) {
545 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
550 if (aslc_req & ASLC_SET_ALS_ILLUM)
551 aslc_stat |= asle_set_als_illum(dev, asle->alsi);
553 if (aslc_req & ASLC_SET_BACKLIGHT)
554 aslc_stat |= asle_set_backlight(dev, asle->bclp);
556 if (aslc_req & ASLC_SET_PFIT)
557 aslc_stat |= asle_set_pfit(dev, asle->pfit);
559 if (aslc_req & ASLC_SET_PWM_FREQ)
560 aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb);
562 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
563 aslc_stat |= asle_set_supported_rotation_angles(dev,
566 if (aslc_req & ASLC_BUTTON_ARRAY)
567 aslc_stat |= asle_set_button_array(dev, asle->iuer);
569 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
570 aslc_stat |= asle_set_convertible(dev, asle->iuer);
572 if (aslc_req & ASLC_DOCKING_INDICATOR)
573 aslc_stat |= asle_set_docking(dev, asle->iuer);
575 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
576 aslc_stat |= asle_isct_state(dev);
578 asle->aslc = aslc_stat;
581 void intel_opregion_asle_intr(struct drm_device *dev)
583 struct drm_i915_private *dev_priv = dev->dev_private;
585 if (dev_priv->opregion.asle)
586 schedule_work(&dev_priv->opregion.asle_work);
589 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
590 #define ACPI_EV_LID (1<<1)
591 #define ACPI_EV_DOCK (1<<2)
593 static struct intel_opregion *system_opregion;
596 static int intel_opregion_video_event(struct notifier_block *nb,
597 unsigned long val, void *data)
599 /* The only video events relevant to opregion are 0x80. These indicate
600 either a docking event, lid switch or display switch request. In
601 Linux, these are handled by the dock, button and video drivers.
604 struct acpi_bus_event *event = data;
605 struct opregion_acpi *acpi;
608 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
611 if (!system_opregion)
614 acpi = system_opregion->acpi;
616 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
624 static struct notifier_block intel_opregion_notifier = {
625 .notifier_call = intel_opregion_video_event,
629 static int acpi_is_video_device(ACPI_HANDLE devh) {
631 if (ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) ||
632 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h))) {
639 * Initialise the DIDL field in opregion. This passes a list of devices to
640 * the firmware. Values are defined by section B.4.2 of the ACPI specification
644 static u32 get_did(struct intel_opregion *opregion, int i)
648 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
649 did = opregion->acpi->didl[i];
651 i -= ARRAY_SIZE(opregion->acpi->didl);
653 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
656 did = opregion->acpi->did2[i];
662 static void set_did(struct intel_opregion *opregion, int i, u32 val)
664 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
665 opregion->acpi->didl[i] = val;
667 i -= ARRAY_SIZE(opregion->acpi->didl);
669 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
672 opregion->acpi->did2[i] = val;
676 static void intel_didl_outputs(struct drm_device *dev)
678 struct drm_i915_private *dev_priv = dev->dev_private;
679 struct intel_opregion *opregion = &dev_priv->opregion;
680 struct drm_connector *connector;
681 ACPI_HANDLE handle, acpi_cdev, acpi_video_bus;
684 u32 temp, max_outputs;
687 handle = acpi_get_handle(dev->dev->bsddev);
691 if (acpi_is_video_device(handle))
692 acpi_video_bus = handle;
695 acpi_video_bus = NULL;
696 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, handle, acpi_cdev,
697 &acpi_cdev) != AE_NOT_FOUND) {
698 if (acpi_is_video_device(acpi_cdev)) {
699 acpi_video_bus = acpi_cdev;
705 if (!acpi_video_bus) {
706 DRM_DEBUG_KMS("No ACPI video bus found\n");
711 * In theory, did2, the extended didl, gets added at opregion version
712 * 3.0. In practice, however, we're supposed to set it for earlier
713 * versions as well, since a BIOS that doesn't understand did2 should
714 * not look at it anyway. Use a variable so we can tweak this if a need
717 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
718 ARRAY_SIZE(opregion->acpi->did2);
723 while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpi_video_bus, acpi_cdev,
724 &acpi_cdev) != AE_NOT_FOUND) {
725 if (i >= max_outputs) {
726 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
730 status = acpi_GetInteger(acpi_cdev, "_ADR", &device_id);
731 if (ACPI_SUCCESS(status)) {
734 set_did(opregion, i++, (u32)(device_id & 0x0f0f));
739 DRM_DEBUG_KMS("%d outputs detected\n", i);
741 /* If fewer than max outputs, the list must be null terminated */
743 set_did(opregion, i, 0);
748 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
749 int output_type = ACPI_OTHER_OUTPUT;
750 if (i >= max_outputs) {
751 DRM_DEBUG_KMS("More than %u outputs in connector list\n",
755 switch (connector->connector_type) {
756 case DRM_MODE_CONNECTOR_VGA:
757 case DRM_MODE_CONNECTOR_DVIA:
758 output_type = ACPI_VGA_OUTPUT;
760 case DRM_MODE_CONNECTOR_Composite:
761 case DRM_MODE_CONNECTOR_SVIDEO:
762 case DRM_MODE_CONNECTOR_Component:
763 case DRM_MODE_CONNECTOR_9PinDIN:
764 output_type = ACPI_TV_OUTPUT;
766 case DRM_MODE_CONNECTOR_DVII:
767 case DRM_MODE_CONNECTOR_DVID:
768 case DRM_MODE_CONNECTOR_DisplayPort:
769 case DRM_MODE_CONNECTOR_HDMIA:
770 case DRM_MODE_CONNECTOR_HDMIB:
771 output_type = ACPI_DIGITAL_OUTPUT;
773 case DRM_MODE_CONNECTOR_LVDS:
774 output_type = ACPI_LVDS_OUTPUT;
777 temp = get_did(opregion, i);
778 set_did(opregion, i, temp | (1 << 31) | output_type | i);
784 static void intel_setup_cadls(struct drm_device *dev)
786 struct drm_i915_private *dev_priv = dev->dev_private;
787 struct intel_opregion *opregion = &dev_priv->opregion;
791 /* Initialize the CADL field by duplicating the DIDL values.
792 * Technically, this is not always correct as display outputs may exist,
793 * but not active. This initialization is necessary for some Clevo
794 * laptops that check this field before processing the brightness and
795 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
796 * there are less than eight devices. */
798 disp_id = get_did(opregion, i);
799 opregion->acpi->cadl[i] = disp_id;
800 } while (++i < 8 && disp_id != 0);
803 void intel_opregion_init(struct drm_device *dev)
805 struct drm_i915_private *dev_priv = dev->dev_private;
806 struct intel_opregion *opregion = &dev_priv->opregion;
808 if (!opregion->header)
811 if (opregion->acpi) {
812 intel_didl_outputs(dev);
813 intel_setup_cadls(dev);
815 /* Notify BIOS we are ready to handle ACPI video ext notifs.
816 * Right now, all the events are handled by the ACPI video module.
817 * We don't actually need to do anything with them. */
818 opregion->acpi->csts = 0;
819 opregion->acpi->drdy = 1;
821 system_opregion = opregion;
824 if (opregion->asle) {
825 opregion->asle->tche = ASLE_TCHE_BLC_EN;
826 opregion->asle->ardy = ASLE_ARDY_READY;
830 void intel_opregion_fini(struct drm_device *dev)
832 struct drm_i915_private *dev_priv = dev->dev_private;
833 struct intel_opregion *opregion = &dev_priv->opregion;
835 if (!opregion->header)
839 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
841 cancel_work_sync(&dev_priv->opregion.asle_work);
843 if (opregion->acpi) {
844 opregion->acpi->drdy = 0;
846 system_opregion = NULL;
849 /* just clear all opregion memory pointers now */
850 iounmap(opregion->header);
851 if (opregion->rvda) {
852 iounmap(opregion->rvda);
853 opregion->rvda = NULL;
855 opregion->header = NULL;
856 opregion->acpi = NULL;
857 opregion->swsci = NULL;
858 opregion->asle = NULL;
859 opregion->vbt = NULL;
860 opregion->lid_state = NULL;
863 static void swsci_setup(struct drm_device *dev)
865 struct drm_i915_private *dev_priv = dev->dev_private;
866 struct intel_opregion *opregion = &dev_priv->opregion;
867 bool requested_callbacks = false;
870 /* Sub-function code 0 is okay, let's allow them. */
871 opregion->swsci_gbda_sub_functions = 1;
872 opregion->swsci_sbcb_sub_functions = 1;
874 /* We use GBDA to ask for supported GBDA calls. */
875 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
876 /* make the bits match the sub-function codes */
878 opregion->swsci_gbda_sub_functions |= tmp;
882 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
883 * must not call interfaces that are not specifically requested by the
886 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
887 /* here, the bits already match sub-function codes */
888 opregion->swsci_sbcb_sub_functions |= tmp;
889 requested_callbacks = true;
893 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
894 * the callback is _requested_. But we still can't call interfaces that
897 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
898 /* make the bits match the sub-function codes */
899 u32 low = tmp & 0x7ff;
900 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
901 tmp = (high << 4) | (low << 1) | 1;
903 /* best guess what to do with supported wrt requested */
904 if (requested_callbacks) {
905 u32 req = opregion->swsci_sbcb_sub_functions;
906 if ((req & tmp) != req)
907 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
908 /* XXX: for now, trust the requested callbacks */
909 /* opregion->swsci_sbcb_sub_functions &= tmp; */
911 opregion->swsci_sbcb_sub_functions |= tmp;
915 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
916 opregion->swsci_gbda_sub_functions,
917 opregion->swsci_sbcb_sub_functions);
920 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
922 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
923 "VBIOS ROM for %s\n", id->ident);
927 static const struct dmi_system_id intel_no_opregion_vbt[] = {
929 .callback = intel_no_opregion_vbt_callback,
930 .ident = "ThinkCentre A57",
932 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
933 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
939 int intel_opregion_setup(struct drm_device *dev)
941 struct drm_i915_private *dev_priv = dev->dev_private;
942 struct intel_opregion *opregion = &dev_priv->opregion;
944 char buf[sizeof(OPREGION_SIGNATURE)];
948 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
949 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
950 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
951 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
952 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
954 pci_read_config_dword(dev->pdev, ASLS, &asls);
955 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
957 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
961 INIT_WORK(&opregion->asle_work, asle_work);
963 base = (void *)pmap_mapbios(asls, OPREGION_SIZE);
967 memcpy(buf, base, sizeof(buf));
969 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
970 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
974 opregion->header = (struct opregion_header *)base;
976 opregion->lid_state = (u32 *)(base + ACPI_CLID);
978 mboxes = opregion->header->mboxes;
979 if (mboxes & MBOX_ACPI) {
980 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
981 opregion->acpi = (struct opregion_acpi *)(base + OPREGION_ACPI_OFFSET);
984 if (mboxes & MBOX_SWSCI) {
985 DRM_DEBUG_DRIVER("SWSCI supported\n");
986 opregion->swsci = (struct opregion_swsci *)(base + OPREGION_SWSCI_OFFSET);
990 if (mboxes & MBOX_ASLE) {
991 DRM_DEBUG_DRIVER("ASLE supported\n");
992 opregion->asle = (struct opregion_asle *)(base + OPREGION_ASLE_OFFSET);
994 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
997 if (mboxes & MBOX_ASLE_EXT)
998 DRM_DEBUG_DRIVER("ASLE extension supported\n");
1000 if (!dmi_check_system(intel_no_opregion_vbt)) {
1001 const void *vbt = NULL;
1004 if (opregion->header->opregion_ver >= 2 && opregion->asle &&
1005 opregion->asle->rvda && opregion->asle->rvds) {
1006 opregion->rvda = pmap_mapbios(opregion->asle->rvda,
1007 opregion->asle->rvds);
1008 vbt = opregion->rvda;
1009 vbt_size = opregion->asle->rvds;
1012 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1013 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
1014 opregion->vbt = vbt;
1015 opregion->vbt_size = vbt_size;
1017 vbt = base + OPREGION_VBT_OFFSET;
1018 vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET;
1019 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1020 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1021 opregion->vbt = vbt;
1022 opregion->vbt_size = vbt_size;
1034 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1036 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1040 static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1042 .callback = intel_use_opregion_panel_type_callback,
1043 .ident = "Conrac GmbH IX45GM2",
1044 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1045 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1052 intel_opregion_get_panel_type(struct drm_device *dev)
1057 ret = swsci(dev, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1059 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n",
1064 ret = (panel_details >> 8) & 0xff;
1066 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret);
1070 /* fall back to VBT panel type? */
1072 DRM_DEBUG_KMS("No panel type in OpRegion\n");
1077 * So far we know that some machined must use it, others must not use it.
1078 * There doesn't seem to be any way to determine which way to go, except
1079 * via a quirk list :(
1081 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1082 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);
1087 * FIXME On Dell XPS 13 9350 the OpRegion panel type (0) gives us
1088 * low vswing for eDP, whereas the VBT panel type (2) gives us normal
1089 * vswing instead. Low vswing results in some display flickers, so
1090 * let's simply ignore the OpRegion panel type on SKL for now.
1092 if (IS_SKYLAKE(dev)) {
1093 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);