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1/*
2 * Copyright 2008 Intel Corporation <hong.liu@intel.com>
3 * Copyright 2008 Red Hat <mjg@redhat.com>
4 *
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:
12 *
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.
16 *
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
24 * SOFTWARE.
25 *
26 */
27
28#include <linux/acpi.h>
29#include <linux/dmi.h>
30#include <linux/firmware.h>
31#include <acpi/video.h>
32
33#include <drm/drm_edid.h>
34
35#include "i915_drv.h"
36#include "intel_acpi.h"
37#include "intel_backlight.h"
38#include "intel_display_types.h"
39#include "intel_opregion.h"
40#include "intel_pci_config.h"
41
42#define OPREGION_HEADER_OFFSET 0
43#define OPREGION_ACPI_OFFSET 0x100
44#define ACPI_CLID 0x01ac /* current lid state indicator */
45#define ACPI_CDCK 0x01b0 /* current docking state indicator */
46#define OPREGION_SWSCI_OFFSET 0x200
47#define OPREGION_ASLE_OFFSET 0x300
48#define OPREGION_VBT_OFFSET 0x400
49#define OPREGION_ASLE_EXT_OFFSET 0x1C00
50
51#define OPREGION_SIGNATURE "IntelGraphicsMem"
52#define MBOX_ACPI BIT(0) /* Mailbox #1 */
53#define MBOX_SWSCI BIT(1) /* Mailbox #2 (obsolete from v2.x) */
54#define MBOX_ASLE BIT(2) /* Mailbox #3 */
55#define MBOX_ASLE_EXT BIT(4) /* Mailbox #5 */
56#define MBOX_BACKLIGHT BIT(5) /* Mailbox #2 (valid from v3.x) */
57
58#define PCON_HEADLESS_SKU BIT(13)
59
60struct opregion_header {
61 u8 signature[16];
62 u32 size;
63 struct {
64 u8 rsvd;
65 u8 revision;
66 u8 minor;
67 u8 major;
68 } __packed over;
69 u8 bios_ver[32];
70 u8 vbios_ver[16];
71 u8 driver_ver[16];
72 u32 mboxes;
73 u32 driver_model;
74 u32 pcon;
75 u8 dver[32];
76 u8 rsvd[124];
77} __packed;
78
79/* OpRegion mailbox #1: public ACPI methods */
80struct opregion_acpi {
81 u32 drdy; /* driver readiness */
82 u32 csts; /* notification status */
83 u32 cevt; /* current event */
84 u8 rsvd1[20];
85 u32 didl[8]; /* supported display devices ID list */
86 u32 cpdl[8]; /* currently presented display list */
87 u32 cadl[8]; /* currently active display list */
88 u32 nadl[8]; /* next active devices list */
89 u32 aslp; /* ASL sleep time-out */
90 u32 tidx; /* toggle table index */
91 u32 chpd; /* current hotplug enable indicator */
92 u32 clid; /* current lid state*/
93 u32 cdck; /* current docking state */
94 u32 sxsw; /* Sx state resume */
95 u32 evts; /* ASL supported events */
96 u32 cnot; /* current OS notification */
97 u32 nrdy; /* driver status */
98 u32 did2[7]; /* extended supported display devices ID list */
99 u32 cpd2[7]; /* extended attached display devices list */
100 u8 rsvd2[4];
101} __packed;
102
103/* OpRegion mailbox #2: SWSCI */
104struct opregion_swsci {
105 u32 scic; /* SWSCI command|status|data */
106 u32 parm; /* command parameters */
107 u32 dslp; /* driver sleep time-out */
108 u8 rsvd[244];
109} __packed;
110
111/* OpRegion mailbox #3: ASLE */
112struct opregion_asle {
113 u32 ardy; /* driver readiness */
114 u32 aslc; /* ASLE interrupt command */
115 u32 tche; /* technology enabled indicator */
116 u32 alsi; /* current ALS illuminance reading */
117 u32 bclp; /* backlight brightness to set */
118 u32 pfit; /* panel fitting state */
119 u32 cblv; /* current brightness level */
120 u16 bclm[20]; /* backlight level duty cycle mapping table */
121 u32 cpfm; /* current panel fitting mode */
122 u32 epfm; /* enabled panel fitting modes */
123 u8 plut[74]; /* panel LUT and identifier */
124 u32 pfmb; /* PWM freq and min brightness */
125 u32 cddv; /* color correction default values */
126 u32 pcft; /* power conservation features */
127 u32 srot; /* supported rotation angles */
128 u32 iuer; /* IUER events */
129 u64 fdss;
130 u32 fdsp;
131 u32 stat;
132 u64 rvda; /* Physical (2.0) or relative from opregion (2.1+)
133 * address of raw VBT data. */
134 u32 rvds; /* Size of raw vbt data */
135 u8 rsvd[58];
136} __packed;
137
138/* OpRegion mailbox #5: ASLE ext */
139struct opregion_asle_ext {
140 u32 phed; /* Panel Header */
141 u8 bddc[256]; /* Panel EDID */
142 u8 rsvd[764];
143} __packed;
144
145/* Driver readiness indicator */
146#define ASLE_ARDY_READY (1 << 0)
147#define ASLE_ARDY_NOT_READY (0 << 0)
148
149/* ASLE Interrupt Command (ASLC) bits */
150#define ASLC_SET_ALS_ILLUM (1 << 0)
151#define ASLC_SET_BACKLIGHT (1 << 1)
152#define ASLC_SET_PFIT (1 << 2)
153#define ASLC_SET_PWM_FREQ (1 << 3)
154#define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
155#define ASLC_BUTTON_ARRAY (1 << 5)
156#define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
157#define ASLC_DOCKING_INDICATOR (1 << 7)
158#define ASLC_ISCT_STATE_CHANGE (1 << 8)
159#define ASLC_REQ_MSK 0x1ff
160/* response bits */
161#define ASLC_ALS_ILLUM_FAILED (1 << 10)
162#define ASLC_BACKLIGHT_FAILED (1 << 12)
163#define ASLC_PFIT_FAILED (1 << 14)
164#define ASLC_PWM_FREQ_FAILED (1 << 16)
165#define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
166#define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
167#define ASLC_CONVERTIBLE_FAILED (1 << 22)
168#define ASLC_DOCKING_FAILED (1 << 24)
169#define ASLC_ISCT_STATE_FAILED (1 << 26)
170
171/* Technology enabled indicator */
172#define ASLE_TCHE_ALS_EN (1 << 0)
173#define ASLE_TCHE_BLC_EN (1 << 1)
174#define ASLE_TCHE_PFIT_EN (1 << 2)
175#define ASLE_TCHE_PFMB_EN (1 << 3)
176
177/* ASLE backlight brightness to set */
178#define ASLE_BCLP_VALID (1<<31)
179#define ASLE_BCLP_MSK (~(1<<31))
180
181/* ASLE panel fitting request */
182#define ASLE_PFIT_VALID (1<<31)
183#define ASLE_PFIT_CENTER (1<<0)
184#define ASLE_PFIT_STRETCH_TEXT (1<<1)
185#define ASLE_PFIT_STRETCH_GFX (1<<2)
186
187/* PWM frequency and minimum brightness */
188#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
189#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
190#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
191#define ASLE_PFMB_PWM_VALID (1<<31)
192
193#define ASLE_CBLV_VALID (1<<31)
194
195/* IUER */
196#define ASLE_IUER_DOCKING (1 << 7)
197#define ASLE_IUER_CONVERTIBLE (1 << 6)
198#define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
199#define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
200#define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
201#define ASLE_IUER_WINDOWS_BTN (1 << 1)
202#define ASLE_IUER_POWER_BTN (1 << 0)
203
204#define ASLE_PHED_EDID_VALID_MASK 0x3
205
206/* Software System Control Interrupt (SWSCI) */
207#define SWSCI_SCIC_INDICATOR (1 << 0)
208#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
209#define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
210#define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
211#define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
212#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
213#define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
214#define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
215#define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
216#define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
217
218#define SWSCI_FUNCTION_CODE(main, sub) \
219 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
220 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
221
222/* SWSCI: Get BIOS Data (GBDA) */
223#define SWSCI_GBDA 4
224#define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
225#define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
226#define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
227#define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
228#define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
229#define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
230#define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
231
232/* SWSCI: System BIOS Callbacks (SBCB) */
233#define SWSCI_SBCB 6
234#define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
235#define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
236#define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
237#define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
238#define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
239#define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
240#define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
241#define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
242#define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
243#define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
244#define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
245#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
246#define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
247#define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
248#define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
249#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
250
251#define MAX_DSLP 1500
252
253static int check_swsci_function(struct drm_i915_private *i915, u32 function)
254{
255 struct opregion_swsci *swsci = i915->display.opregion.swsci;
256 u32 main_function, sub_function;
257
258 if (!swsci)
259 return -ENODEV;
260
261 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
262 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
263 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
264 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
265
266 /* Check if we can call the function. See swsci_setup for details. */
267 if (main_function == SWSCI_SBCB) {
268 if ((i915->display.opregion.swsci_sbcb_sub_functions &
269 (1 << sub_function)) == 0)
270 return -EINVAL;
271 } else if (main_function == SWSCI_GBDA) {
272 if ((i915->display.opregion.swsci_gbda_sub_functions &
273 (1 << sub_function)) == 0)
274 return -EINVAL;
275 }
276
277 return 0;
278}
279
280static int swsci(struct drm_i915_private *dev_priv,
281 u32 function, u32 parm, u32 *parm_out)
282{
283 struct opregion_swsci *swsci = dev_priv->display.opregion.swsci;
284 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
285 u32 scic, dslp;
286 u16 swsci_val;
287 int ret;
288
289 ret = check_swsci_function(dev_priv, function);
290 if (ret)
291 return ret;
292
293 /* Driver sleep timeout in ms. */
294 dslp = swsci->dslp;
295 if (!dslp) {
296 /* The spec says 2ms should be the default, but it's too small
297 * for some machines. */
298 dslp = 50;
299 } else if (dslp > MAX_DSLP) {
300 /* Hey bios, trust must be earned. */
301 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
302 "using %u ms instead\n", dslp, MAX_DSLP);
303 dslp = MAX_DSLP;
304 }
305
306 /* The spec tells us to do this, but we are the only user... */
307 scic = swsci->scic;
308 if (scic & SWSCI_SCIC_INDICATOR) {
309 drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n");
310 return -EBUSY;
311 }
312
313 scic = function | SWSCI_SCIC_INDICATOR;
314
315 swsci->parm = parm;
316 swsci->scic = scic;
317
318 /* Ensure SCI event is selected and event trigger is cleared. */
319 pci_read_config_word(pdev, SWSCI, &swsci_val);
320 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
321 swsci_val |= SWSCI_SCISEL;
322 swsci_val &= ~SWSCI_GSSCIE;
323 pci_write_config_word(pdev, SWSCI, swsci_val);
324 }
325
326 /* Use event trigger to tell bios to check the mail. */
327 swsci_val |= SWSCI_GSSCIE;
328 pci_write_config_word(pdev, SWSCI, swsci_val);
329
330 /* Poll for the result. */
331#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
332 if (wait_for(C, dslp)) {
333 drm_dbg(&dev_priv->drm, "SWSCI request timed out\n");
334 return -ETIMEDOUT;
335 }
336
337 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
338 SWSCI_SCIC_EXIT_STATUS_SHIFT;
339
340 /* Note: scic == 0 is an error! */
341 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
342 drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic);
343 return -EIO;
344 }
345
346 if (parm_out)
347 *parm_out = swsci->parm;
348
349 return 0;
350
351#undef C
352}
353
354#define DISPLAY_TYPE_CRT 0
355#define DISPLAY_TYPE_TV 1
356#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
357#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
358
359int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
360 bool enable)
361{
362 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
363 u32 parm = 0;
364 u32 type = 0;
365 u32 port;
366 int ret;
367
368 /* don't care about old stuff for now */
369 if (!HAS_DDI(dev_priv))
370 return 0;
371
372 /* Avoid port out of bounds checks if SWSCI isn't there. */
373 ret = check_swsci_function(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE);
374 if (ret)
375 return ret;
376
377 if (intel_encoder->type == INTEL_OUTPUT_DSI)
378 port = 0;
379 else
380 port = intel_encoder->port;
381
382 if (port == PORT_E) {
383 port = 0;
384 } else {
385 parm |= 1 << port;
386 port++;
387 }
388
389 /*
390 * The port numbering and mapping here is bizarre. The now-obsolete
391 * swsci spec supports ports numbered [0..4]. Port E is handled as a
392 * special case, but port F and beyond are not. The functionality is
393 * supposed to be obsolete for new platforms. Just bail out if the port
394 * number is out of bounds after mapping.
395 */
396 if (port > 4) {
397 drm_dbg_kms(&dev_priv->drm,
398 "[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n",
399 intel_encoder->base.base.id, intel_encoder->base.name,
400 port_name(intel_encoder->port), port);
401 return -EINVAL;
402 }
403
404 if (!enable)
405 parm |= 4 << 8;
406
407 switch (intel_encoder->type) {
408 case INTEL_OUTPUT_ANALOG:
409 type = DISPLAY_TYPE_CRT;
410 break;
411 case INTEL_OUTPUT_DDI:
412 case INTEL_OUTPUT_DP:
413 case INTEL_OUTPUT_HDMI:
414 case INTEL_OUTPUT_DP_MST:
415 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
416 break;
417 case INTEL_OUTPUT_EDP:
418 case INTEL_OUTPUT_DSI:
419 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
420 break;
421 default:
422 drm_WARN_ONCE(&dev_priv->drm, 1,
423 "unsupported intel_encoder type %d\n",
424 intel_encoder->type);
425 return -EINVAL;
426 }
427
428 parm |= type << (16 + port * 3);
429
430 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
431}
432
433static const struct {
434 pci_power_t pci_power_state;
435 u32 parm;
436} power_state_map[] = {
437 { PCI_D0, 0x00 },
438 { PCI_D1, 0x01 },
439 { PCI_D2, 0x02 },
440 { PCI_D3hot, 0x04 },
441 { PCI_D3cold, 0x04 },
442};
443
444int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
445 pci_power_t state)
446{
447 int i;
448
449 if (!HAS_DDI(dev_priv))
450 return 0;
451
452 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
453 if (state == power_state_map[i].pci_power_state)
454 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
455 power_state_map[i].parm, NULL);
456 }
457
458 return -EINVAL;
459}
460
461static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
462{
463 struct intel_connector *connector;
464 struct drm_connector_list_iter conn_iter;
465 struct opregion_asle *asle = dev_priv->display.opregion.asle;
466
467 drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp);
468
469 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
470 drm_dbg_kms(&dev_priv->drm,
471 "opregion backlight request ignored\n");
472 return 0;
473 }
474
475 if (!(bclp & ASLE_BCLP_VALID))
476 return ASLC_BACKLIGHT_FAILED;
477
478 bclp &= ASLE_BCLP_MSK;
479 if (bclp > 255)
480 return ASLC_BACKLIGHT_FAILED;
481
482 drm_modeset_lock(&dev_priv->drm.mode_config.connection_mutex, NULL);
483
484 /*
485 * Update backlight on all connectors that support backlight (usually
486 * only one).
487 */
488 drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n",
489 bclp);
490 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
491 for_each_intel_connector_iter(connector, &conn_iter)
492 intel_backlight_set_acpi(connector->base.state, bclp, 255);
493 drm_connector_list_iter_end(&conn_iter);
494 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
495
496 drm_modeset_unlock(&dev_priv->drm.mode_config.connection_mutex);
497
498
499 return 0;
500}
501
502static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
503{
504 /* alsi is the current ALS reading in lux. 0 indicates below sensor
505 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
506 drm_dbg(&dev_priv->drm, "Illum is not supported\n");
507 return ASLC_ALS_ILLUM_FAILED;
508}
509
510static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
511{
512 drm_dbg(&dev_priv->drm, "PWM freq is not supported\n");
513 return ASLC_PWM_FREQ_FAILED;
514}
515
516static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
517{
518 /* Panel fitting is currently controlled by the X code, so this is a
519 noop until modesetting support works fully */
520 drm_dbg(&dev_priv->drm, "Pfit is not supported\n");
521 return ASLC_PFIT_FAILED;
522}
523
524static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
525{
526 drm_dbg(&dev_priv->drm, "SROT is not supported\n");
527 return ASLC_ROTATION_ANGLES_FAILED;
528}
529
530static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
531{
532 if (!iuer)
533 drm_dbg(&dev_priv->drm,
534 "Button array event is not supported (nothing)\n");
535 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
536 drm_dbg(&dev_priv->drm,
537 "Button array event is not supported (rotation lock)\n");
538 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
539 drm_dbg(&dev_priv->drm,
540 "Button array event is not supported (volume down)\n");
541 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
542 drm_dbg(&dev_priv->drm,
543 "Button array event is not supported (volume up)\n");
544 if (iuer & ASLE_IUER_WINDOWS_BTN)
545 drm_dbg(&dev_priv->drm,
546 "Button array event is not supported (windows)\n");
547 if (iuer & ASLE_IUER_POWER_BTN)
548 drm_dbg(&dev_priv->drm,
549 "Button array event is not supported (power)\n");
550
551 return ASLC_BUTTON_ARRAY_FAILED;
552}
553
554static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
555{
556 if (iuer & ASLE_IUER_CONVERTIBLE)
557 drm_dbg(&dev_priv->drm,
558 "Convertible is not supported (clamshell)\n");
559 else
560 drm_dbg(&dev_priv->drm,
561 "Convertible is not supported (slate)\n");
562
563 return ASLC_CONVERTIBLE_FAILED;
564}
565
566static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
567{
568 if (iuer & ASLE_IUER_DOCKING)
569 drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n");
570 else
571 drm_dbg(&dev_priv->drm,
572 "Docking is not supported (undocked)\n");
573
574 return ASLC_DOCKING_FAILED;
575}
576
577static u32 asle_isct_state(struct drm_i915_private *dev_priv)
578{
579 drm_dbg(&dev_priv->drm, "ISCT is not supported\n");
580 return ASLC_ISCT_STATE_FAILED;
581}
582
583static void asle_work(struct work_struct *work)
584{
585 struct intel_opregion *opregion =
586 container_of(work, struct intel_opregion, asle_work);
587 struct drm_i915_private *dev_priv =
588 container_of(opregion, struct drm_i915_private, display.opregion);
589 struct opregion_asle *asle = dev_priv->display.opregion.asle;
590 u32 aslc_stat = 0;
591 u32 aslc_req;
592
593 if (!asle)
594 return;
595
596 aslc_req = asle->aslc;
597
598 if (!(aslc_req & ASLC_REQ_MSK)) {
599 drm_dbg(&dev_priv->drm,
600 "No request on ASLC interrupt 0x%08x\n", aslc_req);
601 return;
602 }
603
604 if (aslc_req & ASLC_SET_ALS_ILLUM)
605 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
606
607 if (aslc_req & ASLC_SET_BACKLIGHT)
608 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
609
610 if (aslc_req & ASLC_SET_PFIT)
611 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
612
613 if (aslc_req & ASLC_SET_PWM_FREQ)
614 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
615
616 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
617 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
618 asle->srot);
619
620 if (aslc_req & ASLC_BUTTON_ARRAY)
621 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
622
623 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
624 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
625
626 if (aslc_req & ASLC_DOCKING_INDICATOR)
627 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
628
629 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
630 aslc_stat |= asle_isct_state(dev_priv);
631
632 asle->aslc = aslc_stat;
633}
634
635void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
636{
637 if (dev_priv->display.opregion.asle)
638 queue_work(dev_priv->unordered_wq,
639 &dev_priv->display.opregion.asle_work);
640}
641
642#define ACPI_EV_DISPLAY_SWITCH (1<<0)
643#define ACPI_EV_LID (1<<1)
644#define ACPI_EV_DOCK (1<<2)
645
646/*
647 * The only video events relevant to opregion are 0x80. These indicate either a
648 * docking event, lid switch or display switch request. In Linux, these are
649 * handled by the dock, button and video drivers.
650 */
651static int intel_opregion_video_event(struct notifier_block *nb,
652 unsigned long val, void *data)
653{
654 struct intel_opregion *opregion = container_of(nb, struct intel_opregion,
655 acpi_notifier);
656 struct acpi_bus_event *event = data;
657 struct opregion_acpi *acpi;
658 int ret = NOTIFY_OK;
659
660 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
661 return NOTIFY_DONE;
662
663 acpi = opregion->acpi;
664
665 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
666 ret = NOTIFY_BAD;
667
668 acpi->csts = 0;
669
670 return ret;
671}
672
673/*
674 * Initialise the DIDL field in opregion. This passes a list of devices to
675 * the firmware. Values are defined by section B.4.2 of the ACPI specification
676 * (version 3)
677 */
678
679static void set_did(struct intel_opregion *opregion, int i, u32 val)
680{
681 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
682 opregion->acpi->didl[i] = val;
683 } else {
684 i -= ARRAY_SIZE(opregion->acpi->didl);
685
686 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
687 return;
688
689 opregion->acpi->did2[i] = val;
690 }
691}
692
693static void intel_didl_outputs(struct drm_i915_private *dev_priv)
694{
695 struct intel_opregion *opregion = &dev_priv->display.opregion;
696 struct intel_connector *connector;
697 struct drm_connector_list_iter conn_iter;
698 int i = 0, max_outputs;
699
700 /*
701 * In theory, did2, the extended didl, gets added at opregion version
702 * 3.0. In practice, however, we're supposed to set it for earlier
703 * versions as well, since a BIOS that doesn't understand did2 should
704 * not look at it anyway. Use a variable so we can tweak this if a need
705 * arises later.
706 */
707 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
708 ARRAY_SIZE(opregion->acpi->did2);
709
710 intel_acpi_device_id_update(dev_priv);
711
712 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
713 for_each_intel_connector_iter(connector, &conn_iter) {
714 if (i < max_outputs)
715 set_did(opregion, i, connector->acpi_device_id);
716 i++;
717 }
718 drm_connector_list_iter_end(&conn_iter);
719
720 drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i);
721
722 if (i > max_outputs)
723 drm_err(&dev_priv->drm,
724 "More than %d outputs in connector list\n",
725 max_outputs);
726
727 /* If fewer than max outputs, the list must be null terminated */
728 if (i < max_outputs)
729 set_did(opregion, i, 0);
730}
731
732static void intel_setup_cadls(struct drm_i915_private *dev_priv)
733{
734 struct intel_opregion *opregion = &dev_priv->display.opregion;
735 struct intel_connector *connector;
736 struct drm_connector_list_iter conn_iter;
737 int i = 0;
738
739 /*
740 * Initialize the CADL field from the connector device ids. This is
741 * essentially the same as copying from the DIDL. Technically, this is
742 * not always correct as display outputs may exist, but not active. This
743 * initialization is necessary for some Clevo laptops that check this
744 * field before processing the brightness and display switching hotkeys.
745 *
746 * Note that internal panels should be at the front of the connector
747 * list already, ensuring they're not left out.
748 */
749 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
750 for_each_intel_connector_iter(connector, &conn_iter) {
751 if (i >= ARRAY_SIZE(opregion->acpi->cadl))
752 break;
753 opregion->acpi->cadl[i++] = connector->acpi_device_id;
754 }
755 drm_connector_list_iter_end(&conn_iter);
756
757 /* If fewer than 8 active devices, the list must be null terminated */
758 if (i < ARRAY_SIZE(opregion->acpi->cadl))
759 opregion->acpi->cadl[i] = 0;
760}
761
762static void swsci_setup(struct drm_i915_private *dev_priv)
763{
764 struct intel_opregion *opregion = &dev_priv->display.opregion;
765 bool requested_callbacks = false;
766 u32 tmp;
767
768 /* Sub-function code 0 is okay, let's allow them. */
769 opregion->swsci_gbda_sub_functions = 1;
770 opregion->swsci_sbcb_sub_functions = 1;
771
772 /* We use GBDA to ask for supported GBDA calls. */
773 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
774 /* make the bits match the sub-function codes */
775 tmp <<= 1;
776 opregion->swsci_gbda_sub_functions |= tmp;
777 }
778
779 /*
780 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
781 * must not call interfaces that are not specifically requested by the
782 * bios.
783 */
784 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
785 /* here, the bits already match sub-function codes */
786 opregion->swsci_sbcb_sub_functions |= tmp;
787 requested_callbacks = true;
788 }
789
790 /*
791 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
792 * the callback is _requested_. But we still can't call interfaces that
793 * are not requested.
794 */
795 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
796 /* make the bits match the sub-function codes */
797 u32 low = tmp & 0x7ff;
798 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
799 tmp = (high << 4) | (low << 1) | 1;
800
801 /* best guess what to do with supported wrt requested */
802 if (requested_callbacks) {
803 u32 req = opregion->swsci_sbcb_sub_functions;
804 if ((req & tmp) != req)
805 drm_dbg(&dev_priv->drm,
806 "SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n",
807 req, tmp);
808 /* XXX: for now, trust the requested callbacks */
809 /* opregion->swsci_sbcb_sub_functions &= tmp; */
810 } else {
811 opregion->swsci_sbcb_sub_functions |= tmp;
812 }
813 }
814
815 drm_dbg(&dev_priv->drm,
816 "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
817 opregion->swsci_gbda_sub_functions,
818 opregion->swsci_sbcb_sub_functions);
819}
820
821static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
822{
823 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
824 "VBIOS ROM for %s\n", id->ident);
825 return 1;
826}
827
828static const struct dmi_system_id intel_no_opregion_vbt[] = {
829 {
830 .callback = intel_no_opregion_vbt_callback,
831 .ident = "ThinkCentre A57",
832 .matches = {
833 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
834 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
835 },
836 },
837 { }
838};
839
840static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
841{
842 struct intel_opregion *opregion = &dev_priv->display.opregion;
843 const struct firmware *fw = NULL;
844 const char *name = dev_priv->display.params.vbt_firmware;
845 int ret;
846
847 if (!name || !*name)
848 return -ENOENT;
849
850 ret = request_firmware(&fw, name, dev_priv->drm.dev);
851 if (ret) {
852 drm_err(&dev_priv->drm,
853 "Requesting VBT firmware \"%s\" failed (%d)\n",
854 name, ret);
855 return ret;
856 }
857
858 if (intel_bios_is_valid_vbt(fw->data, fw->size)) {
859 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL);
860 if (opregion->vbt_firmware) {
861 drm_dbg_kms(&dev_priv->drm,
862 "Found valid VBT firmware \"%s\"\n", name);
863 opregion->vbt = opregion->vbt_firmware;
864 opregion->vbt_size = fw->size;
865 ret = 0;
866 } else {
867 ret = -ENOMEM;
868 }
869 } else {
870 drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n",
871 name);
872 ret = -EINVAL;
873 }
874
875 release_firmware(fw);
876
877 return ret;
878}
879
880int intel_opregion_setup(struct drm_i915_private *dev_priv)
881{
882 struct intel_opregion *opregion = &dev_priv->display.opregion;
883 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
884 u32 asls, mboxes;
885 char buf[sizeof(OPREGION_SIGNATURE)];
886 int err = 0;
887 void *base;
888 const void *vbt;
889 u32 vbt_size;
890
891 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
892 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
893 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
894 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
895 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
896
897 pci_read_config_dword(pdev, ASLS, &asls);
898 drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n",
899 asls);
900 if (asls == 0) {
901 drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n");
902 return -ENOTSUPP;
903 }
904
905 INIT_WORK(&opregion->asle_work, asle_work);
906
907 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
908 if (!base)
909 return -ENOMEM;
910
911 memcpy(buf, base, sizeof(buf));
912
913 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
914 drm_dbg(&dev_priv->drm, "opregion signature mismatch\n");
915 err = -EINVAL;
916 goto err_out;
917 }
918 opregion->header = base;
919 opregion->lid_state = base + ACPI_CLID;
920
921 drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n",
922 opregion->header->over.major,
923 opregion->header->over.minor,
924 opregion->header->over.revision);
925
926 mboxes = opregion->header->mboxes;
927 if (mboxes & MBOX_ACPI) {
928 drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n");
929 opregion->acpi = base + OPREGION_ACPI_OFFSET;
930 /*
931 * Indicate we handle monitor hotplug events ourselves so we do
932 * not need ACPI notifications for them. Disabling these avoids
933 * triggering the AML code doing the notifation, which may be
934 * broken as Windows also seems to disable these.
935 */
936 opregion->acpi->chpd = 1;
937 }
938
939 if (mboxes & MBOX_SWSCI) {
940 u8 major = opregion->header->over.major;
941
942 if (major >= 3) {
943 drm_err(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v3.x, ignoring\n");
944 } else {
945 if (major >= 2)
946 drm_dbg(&dev_priv->drm, "SWSCI Mailbox #2 present for opregion v2.x\n");
947 drm_dbg(&dev_priv->drm, "SWSCI supported\n");
948 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
949 swsci_setup(dev_priv);
950 }
951 }
952
953 if (mboxes & MBOX_ASLE) {
954 drm_dbg(&dev_priv->drm, "ASLE supported\n");
955 opregion->asle = base + OPREGION_ASLE_OFFSET;
956
957 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
958 }
959
960 if (mboxes & MBOX_ASLE_EXT) {
961 drm_dbg(&dev_priv->drm, "ASLE extension supported\n");
962 opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
963 }
964
965 if (mboxes & MBOX_BACKLIGHT) {
966 drm_dbg(&dev_priv->drm, "Mailbox #2 for backlight present\n");
967 }
968
969 if (intel_load_vbt_firmware(dev_priv) == 0)
970 goto out;
971
972 if (dmi_check_system(intel_no_opregion_vbt))
973 goto out;
974
975 if (opregion->header->over.major >= 2 && opregion->asle &&
976 opregion->asle->rvda && opregion->asle->rvds) {
977 resource_size_t rvda = opregion->asle->rvda;
978
979 /*
980 * opregion 2.0: rvda is the physical VBT address.
981 *
982 * opregion 2.1+: rvda is unsigned, relative offset from
983 * opregion base, and should never point within opregion.
984 */
985 if (opregion->header->over.major > 2 ||
986 opregion->header->over.minor >= 1) {
987 drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE);
988
989 rvda += asls;
990 }
991
992 opregion->rvda = memremap(rvda, opregion->asle->rvds,
993 MEMREMAP_WB);
994
995 vbt = opregion->rvda;
996 vbt_size = opregion->asle->rvds;
997 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
998 drm_dbg_kms(&dev_priv->drm,
999 "Found valid VBT in ACPI OpRegion (RVDA)\n");
1000 opregion->vbt = vbt;
1001 opregion->vbt_size = vbt_size;
1002 goto out;
1003 } else {
1004 drm_dbg_kms(&dev_priv->drm,
1005 "Invalid VBT in ACPI OpRegion (RVDA)\n");
1006 memunmap(opregion->rvda);
1007 opregion->rvda = NULL;
1008 }
1009 }
1010
1011 vbt = base + OPREGION_VBT_OFFSET;
1012 /*
1013 * The VBT specification says that if the ASLE ext mailbox is not used
1014 * its area is reserved, but on some CHT boards the VBT extends into the
1015 * ASLE ext area. Allow this even though it is against the spec, so we
1016 * do not end up rejecting the VBT on those boards (and end up not
1017 * finding the LCD panel because of this).
1018 */
1019 vbt_size = (mboxes & MBOX_ASLE_EXT) ?
1020 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
1021 vbt_size -= OPREGION_VBT_OFFSET;
1022 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1023 drm_dbg_kms(&dev_priv->drm,
1024 "Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1025 opregion->vbt = vbt;
1026 opregion->vbt_size = vbt_size;
1027 } else {
1028 drm_dbg_kms(&dev_priv->drm,
1029 "Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
1030 }
1031
1032out:
1033 return 0;
1034
1035err_out:
1036 memunmap(base);
1037 return err;
1038}
1039
1040static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1041{
1042 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1043 return 1;
1044}
1045
1046static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1047 {
1048 .callback = intel_use_opregion_panel_type_callback,
1049 .ident = "Conrac GmbH IX45GM2",
1050 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1051 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1052 },
1053 },
1054 { }
1055};
1056
1057int
1058intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1059{
1060 u32 panel_details;
1061 int ret;
1062
1063 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1064 if (ret)
1065 return ret;
1066
1067 ret = (panel_details >> 8) & 0xff;
1068 if (ret > 0x10) {
1069 drm_dbg_kms(&dev_priv->drm,
1070 "Invalid OpRegion panel type 0x%x\n", ret);
1071 return -EINVAL;
1072 }
1073
1074 /* fall back to VBT panel type? */
1075 if (ret == 0x0) {
1076 drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n");
1077 return -ENODEV;
1078 }
1079
1080 /*
1081 * So far we know that some machined must use it, others must not use it.
1082 * There doesn't seem to be any way to determine which way to go, except
1083 * via a quirk list :(
1084 */
1085 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1086 drm_dbg_kms(&dev_priv->drm,
1087 "Ignoring OpRegion panel type (%d)\n", ret - 1);
1088 return -ENODEV;
1089 }
1090
1091 return ret - 1;
1092}
1093
1094/**
1095 * intel_opregion_get_edid - Fetch EDID from ACPI OpRegion mailbox #5
1096 * @intel_connector: eDP connector
1097 *
1098 * This reads the ACPI Opregion mailbox #5 to extract the EDID that is passed
1099 * to it.
1100 *
1101 * Returns:
1102 * The EDID in the OpRegion, or NULL if there is none or it's invalid.
1103 *
1104 */
1105const struct drm_edid *intel_opregion_get_edid(struct intel_connector *intel_connector)
1106{
1107 struct drm_connector *connector = &intel_connector->base;
1108 struct drm_i915_private *i915 = to_i915(connector->dev);
1109 struct intel_opregion *opregion = &i915->display.opregion;
1110 const struct drm_edid *drm_edid;
1111 const void *edid;
1112 int len;
1113
1114 if (!opregion->asle_ext)
1115 return NULL;
1116
1117 edid = opregion->asle_ext->bddc;
1118
1119 /* Validity corresponds to number of 128-byte blocks */
1120 len = (opregion->asle_ext->phed & ASLE_PHED_EDID_VALID_MASK) * 128;
1121 if (!len || !memchr_inv(edid, 0, len))
1122 return NULL;
1123
1124 drm_edid = drm_edid_alloc(edid, len);
1125
1126 if (!drm_edid_valid(drm_edid)) {
1127 drm_dbg_kms(&i915->drm, "Invalid EDID in ACPI OpRegion (Mailbox #5)\n");
1128 drm_edid_free(drm_edid);
1129 drm_edid = NULL;
1130 }
1131
1132 return drm_edid;
1133}
1134
1135bool intel_opregion_headless_sku(struct drm_i915_private *i915)
1136{
1137 struct intel_opregion *opregion = &i915->display.opregion;
1138 struct opregion_header *header = opregion->header;
1139
1140 if (!header || header->over.major < 2 ||
1141 (header->over.major == 2 && header->over.minor < 3))
1142 return false;
1143
1144 return opregion->header->pcon & PCON_HEADLESS_SKU;
1145}
1146
1147void intel_opregion_register(struct drm_i915_private *i915)
1148{
1149 struct intel_opregion *opregion = &i915->display.opregion;
1150
1151 if (!opregion->header)
1152 return;
1153
1154 if (opregion->acpi) {
1155 opregion->acpi_notifier.notifier_call =
1156 intel_opregion_video_event;
1157 register_acpi_notifier(&opregion->acpi_notifier);
1158 }
1159
1160 intel_opregion_resume(i915);
1161}
1162
1163static void intel_opregion_resume_display(struct drm_i915_private *i915)
1164{
1165 struct intel_opregion *opregion = &i915->display.opregion;
1166
1167 if (opregion->acpi) {
1168 intel_didl_outputs(i915);
1169 intel_setup_cadls(i915);
1170
1171 /*
1172 * Notify BIOS we are ready to handle ACPI video ext notifs.
1173 * Right now, all the events are handled by the ACPI video
1174 * module. We don't actually need to do anything with them.
1175 */
1176 opregion->acpi->csts = 0;
1177 opregion->acpi->drdy = 1;
1178 }
1179
1180 if (opregion->asle) {
1181 opregion->asle->tche = ASLE_TCHE_BLC_EN;
1182 opregion->asle->ardy = ASLE_ARDY_READY;
1183 }
1184
1185 /* Some platforms abuse the _DSM to enable MUX */
1186 intel_dsm_get_bios_data_funcs_supported(i915);
1187}
1188
1189void intel_opregion_resume(struct drm_i915_private *i915)
1190{
1191 struct intel_opregion *opregion = &i915->display.opregion;
1192
1193 if (!opregion->header)
1194 return;
1195
1196 if (HAS_DISPLAY(i915))
1197 intel_opregion_resume_display(i915);
1198
1199 intel_opregion_notify_adapter(i915, PCI_D0);
1200}
1201
1202static void intel_opregion_suspend_display(struct drm_i915_private *i915)
1203{
1204 struct intel_opregion *opregion = &i915->display.opregion;
1205
1206 if (opregion->asle)
1207 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
1208
1209 cancel_work_sync(&i915->display.opregion.asle_work);
1210
1211 if (opregion->acpi)
1212 opregion->acpi->drdy = 0;
1213}
1214
1215void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state)
1216{
1217 struct intel_opregion *opregion = &i915->display.opregion;
1218
1219 if (!opregion->header)
1220 return;
1221
1222 intel_opregion_notify_adapter(i915, state);
1223
1224 if (HAS_DISPLAY(i915))
1225 intel_opregion_suspend_display(i915);
1226}
1227
1228void intel_opregion_unregister(struct drm_i915_private *i915)
1229{
1230 struct intel_opregion *opregion = &i915->display.opregion;
1231
1232 intel_opregion_suspend(i915, PCI_D1);
1233
1234 if (!opregion->header)
1235 return;
1236
1237 if (opregion->acpi_notifier.notifier_call) {
1238 unregister_acpi_notifier(&opregion->acpi_notifier);
1239 opregion->acpi_notifier.notifier_call = NULL;
1240 }
1241}
1242
1243void intel_opregion_cleanup(struct drm_i915_private *i915)
1244{
1245 struct intel_opregion *opregion = &i915->display.opregion;
1246
1247 if (!opregion->header)
1248 return;
1249
1250 /* just clear all opregion memory pointers now */
1251 memunmap(opregion->header);
1252 if (opregion->rvda) {
1253 memunmap(opregion->rvda);
1254 opregion->rvda = NULL;
1255 }
1256 if (opregion->vbt_firmware) {
1257 kfree(opregion->vbt_firmware);
1258 opregion->vbt_firmware = NULL;
1259 }
1260 opregion->header = NULL;
1261 opregion->acpi = NULL;
1262 opregion->swsci = NULL;
1263 opregion->asle = NULL;
1264 opregion->asle_ext = NULL;
1265 opregion->vbt = NULL;
1266 opregion->lid_state = NULL;
1267}