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>
34 #include <drm/i915_drm.h>
36 #include "intel_opregion.h"
38 #include "intel_drv.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)
245 * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices
246 * Attached to the Display Adapter).
248 #define ACPI_DISPLAY_INDEX_SHIFT 0
249 #define ACPI_DISPLAY_INDEX_MASK (0xf << 0)
250 #define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT 4
251 #define ACPI_DISPLAY_PORT_ATTACHMENT_MASK (0xf << 4)
252 #define ACPI_DISPLAY_TYPE_SHIFT 8
253 #define ACPI_DISPLAY_TYPE_MASK (0xf << 8)
254 #define ACPI_DISPLAY_TYPE_OTHER (0 << 8)
255 #define ACPI_DISPLAY_TYPE_VGA (1 << 8)
256 #define ACPI_DISPLAY_TYPE_TV (2 << 8)
257 #define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL (3 << 8)
258 #define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL (4 << 8)
259 #define ACPI_VENDOR_SPECIFIC_SHIFT 12
260 #define ACPI_VENDOR_SPECIFIC_MASK (0xf << 12)
261 #define ACPI_BIOS_CAN_DETECT (1 << 16)
262 #define ACPI_DEPENDS_ON_VGA (1 << 17)
263 #define ACPI_PIPE_ID_SHIFT 18
264 #define ACPI_PIPE_ID_MASK (7 << 18)
265 #define ACPI_DEVICE_ID_SCHEME (1 << 31)
267 #define MAX_DSLP 1500
269 static int swsci(struct drm_i915_private *dev_priv,
270 u32 function, u32 parm, u32 *parm_out)
272 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
273 struct pci_dev *pdev = dev_priv->drm.pdev;
274 u32 main_function, sub_function, scic;
281 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
282 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
283 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
284 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
286 /* Check if we can call the function. See swsci_setup for details. */
287 if (main_function == SWSCI_SBCB) {
288 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
289 (1 << sub_function)) == 0)
291 } else if (main_function == SWSCI_GBDA) {
292 if ((dev_priv->opregion.swsci_gbda_sub_functions &
293 (1 << sub_function)) == 0)
297 /* Driver sleep timeout in ms. */
300 /* The spec says 2ms should be the default, but it's too small
301 * for some machines. */
303 } else if (dslp > MAX_DSLP) {
304 /* Hey bios, trust must be earned. */
305 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
306 "using %u ms instead\n", dslp, MAX_DSLP);
310 /* The spec tells us to do this, but we are the only user... */
312 if (scic & SWSCI_SCIC_INDICATOR) {
313 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
317 scic = function | SWSCI_SCIC_INDICATOR;
322 /* Ensure SCI event is selected and event trigger is cleared. */
323 pci_read_config_word(pdev, SWSCI, &swsci_val);
324 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
325 swsci_val |= SWSCI_SCISEL;
326 swsci_val &= ~SWSCI_GSSCIE;
327 pci_write_config_word(pdev, SWSCI, swsci_val);
330 /* Use event trigger to tell bios to check the mail. */
331 swsci_val |= SWSCI_GSSCIE;
332 pci_write_config_word(pdev, SWSCI, swsci_val);
334 /* Poll for the result. */
335 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
336 if (wait_for(C, dslp)) {
337 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
341 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
342 SWSCI_SCIC_EXIT_STATUS_SHIFT;
344 /* Note: scic == 0 is an error! */
345 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
346 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
351 *parm_out = swsci->parm;
358 #define DISPLAY_TYPE_CRT 0
359 #define DISPLAY_TYPE_TV 1
360 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
361 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
363 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
366 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
371 /* don't care about old stuff for now */
372 if (!HAS_DDI(dev_priv))
375 if (intel_encoder->type == INTEL_OUTPUT_DSI)
378 port = intel_encoder->port;
380 if (port == PORT_E) {
390 switch (intel_encoder->type) {
391 case INTEL_OUTPUT_ANALOG:
392 type = DISPLAY_TYPE_CRT;
394 case INTEL_OUTPUT_DDI:
395 case INTEL_OUTPUT_DP:
396 case INTEL_OUTPUT_HDMI:
397 case INTEL_OUTPUT_DP_MST:
398 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
400 case INTEL_OUTPUT_EDP:
401 case INTEL_OUTPUT_DSI:
402 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
405 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
406 intel_encoder->type);
410 parm |= type << (16 + port * 3);
412 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
415 static const struct {
416 pci_power_t pci_power_state;
418 } power_state_map[] = {
423 { PCI_D3cold, 0x04 },
426 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
431 if (!HAS_DDI(dev_priv))
434 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
435 if (state == power_state_map[i].pci_power_state)
436 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
437 power_state_map[i].parm, NULL);
443 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
445 struct intel_connector *connector;
446 struct drm_connector_list_iter conn_iter;
447 struct opregion_asle *asle = dev_priv->opregion.asle;
448 struct drm_device *dev = &dev_priv->drm;
450 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
452 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
453 DRM_DEBUG_KMS("opregion backlight request ignored\n");
457 if (!(bclp & ASLE_BCLP_VALID))
458 return ASLC_BACKLIGHT_FAILED;
460 bclp &= ASLE_BCLP_MSK;
462 return ASLC_BACKLIGHT_FAILED;
464 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
467 * Update backlight on all connectors that support backlight (usually
470 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
471 drm_connector_list_iter_begin(dev, &conn_iter);
472 for_each_intel_connector_iter(connector, &conn_iter)
473 intel_panel_set_backlight_acpi(connector->base.state, bclp, 255);
474 drm_connector_list_iter_end(&conn_iter);
475 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
477 drm_modeset_unlock(&dev->mode_config.connection_mutex);
483 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
485 /* alsi is the current ALS reading in lux. 0 indicates below sensor
486 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
487 DRM_DEBUG_DRIVER("Illum is not supported\n");
488 return ASLC_ALS_ILLUM_FAILED;
491 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
493 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
494 return ASLC_PWM_FREQ_FAILED;
497 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
499 /* Panel fitting is currently controlled by the X code, so this is a
500 noop until modesetting support works fully */
501 DRM_DEBUG_DRIVER("Pfit is not supported\n");
502 return ASLC_PFIT_FAILED;
505 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
507 DRM_DEBUG_DRIVER("SROT is not supported\n");
508 return ASLC_ROTATION_ANGLES_FAILED;
511 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
514 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
515 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
516 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
517 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
518 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
519 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
520 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
521 if (iuer & ASLE_IUER_WINDOWS_BTN)
522 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
523 if (iuer & ASLE_IUER_POWER_BTN)
524 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
526 return ASLC_BUTTON_ARRAY_FAILED;
529 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
531 if (iuer & ASLE_IUER_CONVERTIBLE)
532 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
534 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
536 return ASLC_CONVERTIBLE_FAILED;
539 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
541 if (iuer & ASLE_IUER_DOCKING)
542 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
544 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
546 return ASLC_DOCKING_FAILED;
549 static u32 asle_isct_state(struct drm_i915_private *dev_priv)
551 DRM_DEBUG_DRIVER("ISCT is not supported\n");
552 return ASLC_ISCT_STATE_FAILED;
555 static void asle_work(struct work_struct *work)
557 struct intel_opregion *opregion =
558 container_of(work, struct intel_opregion, asle_work);
559 struct drm_i915_private *dev_priv =
560 container_of(opregion, struct drm_i915_private, opregion);
561 struct opregion_asle *asle = dev_priv->opregion.asle;
568 aslc_req = asle->aslc;
570 if (!(aslc_req & ASLC_REQ_MSK)) {
571 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
576 if (aslc_req & ASLC_SET_ALS_ILLUM)
577 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
579 if (aslc_req & ASLC_SET_BACKLIGHT)
580 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
582 if (aslc_req & ASLC_SET_PFIT)
583 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
585 if (aslc_req & ASLC_SET_PWM_FREQ)
586 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
588 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
589 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
592 if (aslc_req & ASLC_BUTTON_ARRAY)
593 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
595 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
596 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
598 if (aslc_req & ASLC_DOCKING_INDICATOR)
599 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
601 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
602 aslc_stat |= asle_isct_state(dev_priv);
604 asle->aslc = aslc_stat;
607 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
609 if (dev_priv->opregion.asle)
610 schedule_work(&dev_priv->opregion.asle_work);
613 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
614 #define ACPI_EV_LID (1<<1)
615 #define ACPI_EV_DOCK (1<<2)
618 * The only video events relevant to opregion are 0x80. These indicate either a
619 * docking event, lid switch or display switch request. In Linux, these are
620 * handled by the dock, button and video drivers.
622 static int intel_opregion_video_event(struct notifier_block *nb,
623 unsigned long val, void *data)
625 struct intel_opregion *opregion = container_of(nb, struct intel_opregion,
627 struct acpi_bus_event *event = data;
628 struct opregion_acpi *acpi;
631 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
634 acpi = opregion->acpi;
636 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
645 * Initialise the DIDL field in opregion. This passes a list of devices to
646 * the firmware. Values are defined by section B.4.2 of the ACPI specification
650 static void set_did(struct intel_opregion *opregion, int i, u32 val)
652 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
653 opregion->acpi->didl[i] = val;
655 i -= ARRAY_SIZE(opregion->acpi->didl);
657 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
660 opregion->acpi->did2[i] = val;
664 static u32 acpi_display_type(struct intel_connector *connector)
668 switch (connector->base.connector_type) {
669 case DRM_MODE_CONNECTOR_VGA:
670 case DRM_MODE_CONNECTOR_DVIA:
671 display_type = ACPI_DISPLAY_TYPE_VGA;
673 case DRM_MODE_CONNECTOR_Composite:
674 case DRM_MODE_CONNECTOR_SVIDEO:
675 case DRM_MODE_CONNECTOR_Component:
676 case DRM_MODE_CONNECTOR_9PinDIN:
677 case DRM_MODE_CONNECTOR_TV:
678 display_type = ACPI_DISPLAY_TYPE_TV;
680 case DRM_MODE_CONNECTOR_DVII:
681 case DRM_MODE_CONNECTOR_DVID:
682 case DRM_MODE_CONNECTOR_DisplayPort:
683 case DRM_MODE_CONNECTOR_HDMIA:
684 case DRM_MODE_CONNECTOR_HDMIB:
685 display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
687 case DRM_MODE_CONNECTOR_LVDS:
688 case DRM_MODE_CONNECTOR_eDP:
689 case DRM_MODE_CONNECTOR_DSI:
690 display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
692 case DRM_MODE_CONNECTOR_Unknown:
693 case DRM_MODE_CONNECTOR_VIRTUAL:
694 display_type = ACPI_DISPLAY_TYPE_OTHER;
697 MISSING_CASE(connector->base.connector_type);
698 display_type = ACPI_DISPLAY_TYPE_OTHER;
705 static void intel_didl_outputs(struct drm_i915_private *dev_priv)
707 struct intel_opregion *opregion = &dev_priv->opregion;
708 struct intel_connector *connector;
709 struct drm_connector_list_iter conn_iter;
710 int i = 0, max_outputs;
711 int display_index[16] = {};
714 * In theory, did2, the extended didl, gets added at opregion version
715 * 3.0. In practice, however, we're supposed to set it for earlier
716 * versions as well, since a BIOS that doesn't understand did2 should
717 * not look at it anyway. Use a variable so we can tweak this if a need
720 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
721 ARRAY_SIZE(opregion->acpi->did2);
723 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
724 for_each_intel_connector_iter(connector, &conn_iter) {
727 device_id = acpi_display_type(connector);
729 /* Use display type specific display index. */
730 type = (device_id & ACPI_DISPLAY_TYPE_MASK)
731 >> ACPI_DISPLAY_TYPE_SHIFT;
732 device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT;
734 connector->acpi_device_id = device_id;
736 set_did(opregion, i, device_id);
739 drm_connector_list_iter_end(&conn_iter);
741 DRM_DEBUG_KMS("%d outputs detected\n", i);
744 DRM_ERROR("More than %d outputs in connector list\n",
747 /* If fewer than max outputs, the list must be null terminated */
749 set_did(opregion, i, 0);
752 static void intel_setup_cadls(struct drm_i915_private *dev_priv)
754 struct intel_opregion *opregion = &dev_priv->opregion;
755 struct intel_connector *connector;
756 struct drm_connector_list_iter conn_iter;
760 * Initialize the CADL field from the connector device ids. This is
761 * essentially the same as copying from the DIDL. Technically, this is
762 * not always correct as display outputs may exist, but not active. This
763 * initialization is necessary for some Clevo laptops that check this
764 * field before processing the brightness and display switching hotkeys.
766 * Note that internal panels should be at the front of the connector
767 * list already, ensuring they're not left out.
769 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
770 for_each_intel_connector_iter(connector, &conn_iter) {
771 if (i >= ARRAY_SIZE(opregion->acpi->cadl))
773 opregion->acpi->cadl[i++] = connector->acpi_device_id;
775 drm_connector_list_iter_end(&conn_iter);
777 /* If fewer than 8 active devices, the list must be null terminated */
778 if (i < ARRAY_SIZE(opregion->acpi->cadl))
779 opregion->acpi->cadl[i] = 0;
782 static void swsci_setup(struct drm_i915_private *dev_priv)
784 struct intel_opregion *opregion = &dev_priv->opregion;
785 bool requested_callbacks = false;
788 /* Sub-function code 0 is okay, let's allow them. */
789 opregion->swsci_gbda_sub_functions = 1;
790 opregion->swsci_sbcb_sub_functions = 1;
792 /* We use GBDA to ask for supported GBDA calls. */
793 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
794 /* make the bits match the sub-function codes */
796 opregion->swsci_gbda_sub_functions |= tmp;
800 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
801 * must not call interfaces that are not specifically requested by the
804 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
805 /* here, the bits already match sub-function codes */
806 opregion->swsci_sbcb_sub_functions |= tmp;
807 requested_callbacks = true;
811 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
812 * the callback is _requested_. But we still can't call interfaces that
815 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
816 /* make the bits match the sub-function codes */
817 u32 low = tmp & 0x7ff;
818 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
819 tmp = (high << 4) | (low << 1) | 1;
821 /* best guess what to do with supported wrt requested */
822 if (requested_callbacks) {
823 u32 req = opregion->swsci_sbcb_sub_functions;
824 if ((req & tmp) != req)
825 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
826 /* XXX: for now, trust the requested callbacks */
827 /* opregion->swsci_sbcb_sub_functions &= tmp; */
829 opregion->swsci_sbcb_sub_functions |= tmp;
833 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
834 opregion->swsci_gbda_sub_functions,
835 opregion->swsci_sbcb_sub_functions);
838 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
840 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
841 "VBIOS ROM for %s\n", id->ident);
845 static const struct dmi_system_id intel_no_opregion_vbt[] = {
847 .callback = intel_no_opregion_vbt_callback,
848 .ident = "ThinkCentre A57",
850 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
851 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
857 static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
859 struct intel_opregion *opregion = &dev_priv->opregion;
860 const struct firmware *fw = NULL;
861 const char *name = i915_modparams.vbt_firmware;
867 ret = request_firmware(&fw, name, &dev_priv->drm.pdev->dev);
869 DRM_ERROR("Requesting VBT firmware \"%s\" failed (%d)\n",
874 if (intel_bios_is_valid_vbt(fw->data, fw->size)) {
875 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL);
876 if (opregion->vbt_firmware) {
877 DRM_DEBUG_KMS("Found valid VBT firmware \"%s\"\n", name);
878 opregion->vbt = opregion->vbt_firmware;
879 opregion->vbt_size = fw->size;
885 DRM_DEBUG_KMS("Invalid VBT firmware \"%s\"\n", name);
889 release_firmware(fw);
894 int intel_opregion_setup(struct drm_i915_private *dev_priv)
896 struct intel_opregion *opregion = &dev_priv->opregion;
897 struct pci_dev *pdev = dev_priv->drm.pdev;
899 char buf[sizeof(OPREGION_SIGNATURE)];
905 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
906 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
907 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
908 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
909 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
911 pci_read_config_dword(pdev, ASLS, &asls);
912 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
914 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
918 INIT_WORK(&opregion->asle_work, asle_work);
920 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
924 memcpy(buf, base, sizeof(buf));
926 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
927 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
931 opregion->header = base;
932 opregion->lid_state = base + ACPI_CLID;
934 DRM_DEBUG_DRIVER("ACPI OpRegion version %u.%u.%u\n",
935 opregion->header->over.major,
936 opregion->header->over.minor,
937 opregion->header->over.revision);
939 mboxes = opregion->header->mboxes;
940 if (mboxes & MBOX_ACPI) {
941 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
942 opregion->acpi = base + OPREGION_ACPI_OFFSET;
945 if (mboxes & MBOX_SWSCI) {
946 DRM_DEBUG_DRIVER("SWSCI supported\n");
947 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
948 swsci_setup(dev_priv);
951 if (mboxes & MBOX_ASLE) {
952 DRM_DEBUG_DRIVER("ASLE supported\n");
953 opregion->asle = base + OPREGION_ASLE_OFFSET;
955 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
958 if (mboxes & MBOX_ASLE_EXT)
959 DRM_DEBUG_DRIVER("ASLE extension supported\n");
961 if (intel_load_vbt_firmware(dev_priv) == 0)
964 if (dmi_check_system(intel_no_opregion_vbt))
967 if (opregion->header->over.major >= 2 && opregion->asle &&
968 opregion->asle->rvda && opregion->asle->rvds) {
969 resource_size_t rvda = opregion->asle->rvda;
972 * opregion 2.0: rvda is the physical VBT address.
974 * opregion 2.1+: rvda is unsigned, relative offset from
975 * opregion base, and should never point within opregion.
977 if (opregion->header->over.major > 2 ||
978 opregion->header->over.minor >= 1) {
979 WARN_ON(rvda < OPREGION_SIZE);
984 opregion->rvda = memremap(rvda, opregion->asle->rvds,
987 vbt = opregion->rvda;
988 vbt_size = opregion->asle->rvds;
989 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
990 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
992 opregion->vbt_size = vbt_size;
995 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (RVDA)\n");
996 memunmap(opregion->rvda);
997 opregion->rvda = NULL;
1001 vbt = base + OPREGION_VBT_OFFSET;
1003 * The VBT specification says that if the ASLE ext mailbox is not used
1004 * its area is reserved, but on some CHT boards the VBT extends into the
1005 * ASLE ext area. Allow this even though it is against the spec, so we
1006 * do not end up rejecting the VBT on those boards (and end up not
1007 * finding the LCD panel because of this).
1009 vbt_size = (mboxes & MBOX_ASLE_EXT) ?
1010 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
1011 vbt_size -= OPREGION_VBT_OFFSET;
1012 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1013 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1014 opregion->vbt = vbt;
1015 opregion->vbt_size = vbt_size;
1017 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
1028 static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1030 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1034 static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1036 .callback = intel_use_opregion_panel_type_callback,
1037 .ident = "Conrac GmbH IX45GM2",
1038 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1039 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1046 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1051 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1053 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n",
1058 ret = (panel_details >> 8) & 0xff;
1060 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret);
1064 /* fall back to VBT panel type? */
1066 DRM_DEBUG_KMS("No panel type in OpRegion\n");
1071 * So far we know that some machined must use it, others must not use it.
1072 * There doesn't seem to be any way to determine which way to go, except
1073 * via a quirk list :(
1075 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1076 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);
1083 void intel_opregion_register(struct drm_i915_private *i915)
1085 struct intel_opregion *opregion = &i915->opregion;
1087 if (!opregion->header)
1090 if (opregion->acpi) {
1091 opregion->acpi_notifier.notifier_call =
1092 intel_opregion_video_event;
1093 register_acpi_notifier(&opregion->acpi_notifier);
1096 intel_opregion_resume(i915);
1099 void intel_opregion_resume(struct drm_i915_private *i915)
1101 struct intel_opregion *opregion = &i915->opregion;
1103 if (!opregion->header)
1106 if (opregion->acpi) {
1107 intel_didl_outputs(i915);
1108 intel_setup_cadls(i915);
1111 * Notify BIOS we are ready to handle ACPI video ext notifs.
1112 * Right now, all the events are handled by the ACPI video
1113 * module. We don't actually need to do anything with them.
1115 opregion->acpi->csts = 0;
1116 opregion->acpi->drdy = 1;
1119 if (opregion->asle) {
1120 opregion->asle->tche = ASLE_TCHE_BLC_EN;
1121 opregion->asle->ardy = ASLE_ARDY_READY;
1124 intel_opregion_notify_adapter(i915, PCI_D0);
1127 void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state)
1129 struct intel_opregion *opregion = &i915->opregion;
1131 if (!opregion->header)
1134 intel_opregion_notify_adapter(i915, state);
1137 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
1139 cancel_work_sync(&i915->opregion.asle_work);
1142 opregion->acpi->drdy = 0;
1145 void intel_opregion_unregister(struct drm_i915_private *i915)
1147 struct intel_opregion *opregion = &i915->opregion;
1149 intel_opregion_suspend(i915, PCI_D1);
1151 if (!opregion->header)
1154 if (opregion->acpi_notifier.notifier_call) {
1155 unregister_acpi_notifier(&opregion->acpi_notifier);
1156 opregion->acpi_notifier.notifier_call = NULL;
1159 /* just clear all opregion memory pointers now */
1160 memunmap(opregion->header);
1161 if (opregion->rvda) {
1162 memunmap(opregion->rvda);
1163 opregion->rvda = NULL;
1165 if (opregion->vbt_firmware) {
1166 kfree(opregion->vbt_firmware);
1167 opregion->vbt_firmware = NULL;
1169 opregion->header = NULL;
1170 opregion->acpi = NULL;
1171 opregion->swsci = NULL;
1172 opregion->asle = NULL;
1173 opregion->vbt = NULL;
1174 opregion->lid_state = NULL;