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28#include <linux/acpi.h>
29#include <linux/dmi.h>
30#include <linux/firmware.h>
31#include <acpi/video.h>
32
33#include "i915_drv.h"
34#include "intel_acpi.h"
35#include "intel_backlight.h"
36#include "intel_display_types.h"
37#include "intel_opregion.h"
38
39#define OPREGION_HEADER_OFFSET 0
40#define OPREGION_ACPI_OFFSET 0x100
41#define ACPI_CLID 0x01ac
42#define ACPI_CDCK 0x01b0
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
47
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)
53
54struct opregion_header {
55 u8 signature[16];
56 u32 size;
57 struct {
58 u8 rsvd;
59 u8 revision;
60 u8 minor;
61 u8 major;
62 } __packed over;
63 u8 bios_ver[32];
64 u8 vbios_ver[16];
65 u8 driver_ver[16];
66 u32 mboxes;
67 u32 driver_model;
68 u32 pcon;
69 u8 dver[32];
70 u8 rsvd[124];
71} __packed;
72
73
74struct opregion_acpi {
75 u32 drdy;
76 u32 csts;
77 u32 cevt;
78 u8 rsvd1[20];
79 u32 didl[8];
80 u32 cpdl[8];
81 u32 cadl[8];
82 u32 nadl[8];
83 u32 aslp;
84 u32 tidx;
85 u32 chpd;
86 u32 clid;
87 u32 cdck;
88 u32 sxsw;
89 u32 evts;
90 u32 cnot;
91 u32 nrdy;
92 u32 did2[7];
93 u32 cpd2[7];
94 u8 rsvd2[4];
95} __packed;
96
97
98struct opregion_swsci {
99 u32 scic;
100 u32 parm;
101 u32 dslp;
102 u8 rsvd[244];
103} __packed;
104
105
106struct opregion_asle {
107 u32 ardy;
108 u32 aslc;
109 u32 tche;
110 u32 alsi;
111 u32 bclp;
112 u32 pfit;
113 u32 cblv;
114 u16 bclm[20];
115 u32 cpfm;
116 u32 epfm;
117 u8 plut[74];
118 u32 pfmb;
119 u32 cddv;
120 u32 pcft;
121 u32 srot;
122 u32 iuer;
123 u64 fdss;
124 u32 fdsp;
125 u32 stat;
126 u64 rvda;
127
128 u32 rvds;
129 u8 rsvd[58];
130} __packed;
131
132
133struct opregion_asle_ext {
134 u32 phed;
135 u8 bddc[256];
136 u8 rsvd[764];
137} __packed;
138
139
140#define ASLE_ARDY_READY (1 << 0)
141#define ASLE_ARDY_NOT_READY (0 << 0)
142
143
144#define ASLC_SET_ALS_ILLUM (1 << 0)
145#define ASLC_SET_BACKLIGHT (1 << 1)
146#define ASLC_SET_PFIT (1 << 2)
147#define ASLC_SET_PWM_FREQ (1 << 3)
148#define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
149#define ASLC_BUTTON_ARRAY (1 << 5)
150#define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
151#define ASLC_DOCKING_INDICATOR (1 << 7)
152#define ASLC_ISCT_STATE_CHANGE (1 << 8)
153#define ASLC_REQ_MSK 0x1ff
154
155#define ASLC_ALS_ILLUM_FAILED (1 << 10)
156#define ASLC_BACKLIGHT_FAILED (1 << 12)
157#define ASLC_PFIT_FAILED (1 << 14)
158#define ASLC_PWM_FREQ_FAILED (1 << 16)
159#define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
160#define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
161#define ASLC_CONVERTIBLE_FAILED (1 << 22)
162#define ASLC_DOCKING_FAILED (1 << 24)
163#define ASLC_ISCT_STATE_FAILED (1 << 26)
164
165
166#define ASLE_TCHE_ALS_EN (1 << 0)
167#define ASLE_TCHE_BLC_EN (1 << 1)
168#define ASLE_TCHE_PFIT_EN (1 << 2)
169#define ASLE_TCHE_PFMB_EN (1 << 3)
170
171
172#define ASLE_BCLP_VALID (1<<31)
173#define ASLE_BCLP_MSK (~(1<<31))
174
175
176#define ASLE_PFIT_VALID (1<<31)
177#define ASLE_PFIT_CENTER (1<<0)
178#define ASLE_PFIT_STRETCH_TEXT (1<<1)
179#define ASLE_PFIT_STRETCH_GFX (1<<2)
180
181
182#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
183#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
184#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
185#define ASLE_PFMB_PWM_VALID (1<<31)
186
187#define ASLE_CBLV_VALID (1<<31)
188
189
190#define ASLE_IUER_DOCKING (1 << 7)
191#define ASLE_IUER_CONVERTIBLE (1 << 6)
192#define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
193#define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
194#define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
195#define ASLE_IUER_WINDOWS_BTN (1 << 1)
196#define ASLE_IUER_POWER_BTN (1 << 0)
197
198
199#define SWSCI_SCIC_INDICATOR (1 << 0)
200#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
201#define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
202#define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
203#define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
204#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
205#define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
206#define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
207#define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
208#define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
209
210#define SWSCI_FUNCTION_CODE(main, sub) \
211 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
212 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
213
214
215#define SWSCI_GBDA 4
216#define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
217#define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
218#define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
219#define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
220#define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
221#define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
222#define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
223
224
225#define SWSCI_SBCB 6
226#define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
227#define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
228#define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
229#define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
230#define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
231#define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
232#define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
233#define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
234#define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
235#define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
236#define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
237#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
238#define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
239#define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
240#define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
241#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
242
243#define MAX_DSLP 1500
244
245static int swsci(struct drm_i915_private *dev_priv,
246 u32 function, u32 parm, u32 *parm_out)
247{
248 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
249 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
250 u32 main_function, sub_function, scic;
251 u16 swsci_val;
252 u32 dslp;
253
254 if (!swsci)
255 return -ENODEV;
256
257 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
258 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
259 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
260 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
261
262
263 if (main_function == SWSCI_SBCB) {
264 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
265 (1 << sub_function)) == 0)
266 return -EINVAL;
267 } else if (main_function == SWSCI_GBDA) {
268 if ((dev_priv->opregion.swsci_gbda_sub_functions &
269 (1 << sub_function)) == 0)
270 return -EINVAL;
271 }
272
273
274 dslp = swsci->dslp;
275 if (!dslp) {
276
277
278 dslp = 50;
279 } else if (dslp > MAX_DSLP) {
280
281 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
282 "using %u ms instead\n", dslp, MAX_DSLP);
283 dslp = MAX_DSLP;
284 }
285
286
287 scic = swsci->scic;
288 if (scic & SWSCI_SCIC_INDICATOR) {
289 drm_dbg(&dev_priv->drm, "SWSCI request already in progress\n");
290 return -EBUSY;
291 }
292
293 scic = function | SWSCI_SCIC_INDICATOR;
294
295 swsci->parm = parm;
296 swsci->scic = scic;
297
298
299 pci_read_config_word(pdev, SWSCI, &swsci_val);
300 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
301 swsci_val |= SWSCI_SCISEL;
302 swsci_val &= ~SWSCI_GSSCIE;
303 pci_write_config_word(pdev, SWSCI, swsci_val);
304 }
305
306
307 swsci_val |= SWSCI_GSSCIE;
308 pci_write_config_word(pdev, SWSCI, swsci_val);
309
310
311#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
312 if (wait_for(C, dslp)) {
313 drm_dbg(&dev_priv->drm, "SWSCI request timed out\n");
314 return -ETIMEDOUT;
315 }
316
317 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
318 SWSCI_SCIC_EXIT_STATUS_SHIFT;
319
320
321 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
322 drm_dbg(&dev_priv->drm, "SWSCI request error %u\n", scic);
323 return -EIO;
324 }
325
326 if (parm_out)
327 *parm_out = swsci->parm;
328
329 return 0;
330
331#undef C
332}
333
334#define DISPLAY_TYPE_CRT 0
335#define DISPLAY_TYPE_TV 1
336#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
337#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
338
339int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
340 bool enable)
341{
342 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
343 u32 parm = 0;
344 u32 type = 0;
345 u32 port;
346
347
348 if (!HAS_DDI(dev_priv))
349 return 0;
350
351 if (intel_encoder->type == INTEL_OUTPUT_DSI)
352 port = 0;
353 else
354 port = intel_encoder->port;
355
356 if (port == PORT_E) {
357 port = 0;
358 } else {
359 parm |= 1 << port;
360 port++;
361 }
362
363
364
365
366
367
368
369
370 if (port > 4) {
371 drm_dbg_kms(&dev_priv->drm,
372 "[ENCODER:%d:%s] port %c (index %u) out of bounds for display power state notification\n",
373 intel_encoder->base.base.id, intel_encoder->base.name,
374 port_name(intel_encoder->port), port);
375 return -EINVAL;
376 }
377
378 if (!enable)
379 parm |= 4 << 8;
380
381 switch (intel_encoder->type) {
382 case INTEL_OUTPUT_ANALOG:
383 type = DISPLAY_TYPE_CRT;
384 break;
385 case INTEL_OUTPUT_DDI:
386 case INTEL_OUTPUT_DP:
387 case INTEL_OUTPUT_HDMI:
388 case INTEL_OUTPUT_DP_MST:
389 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
390 break;
391 case INTEL_OUTPUT_EDP:
392 case INTEL_OUTPUT_DSI:
393 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
394 break;
395 default:
396 drm_WARN_ONCE(&dev_priv->drm, 1,
397 "unsupported intel_encoder type %d\n",
398 intel_encoder->type);
399 return -EINVAL;
400 }
401
402 parm |= type << (16 + port * 3);
403
404 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
405}
406
407static const struct {
408 pci_power_t pci_power_state;
409 u32 parm;
410} power_state_map[] = {
411 { PCI_D0, 0x00 },
412 { PCI_D1, 0x01 },
413 { PCI_D2, 0x02 },
414 { PCI_D3hot, 0x04 },
415 { PCI_D3cold, 0x04 },
416};
417
418int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
419 pci_power_t state)
420{
421 int i;
422
423 if (!HAS_DDI(dev_priv))
424 return 0;
425
426 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
427 if (state == power_state_map[i].pci_power_state)
428 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
429 power_state_map[i].parm, NULL);
430 }
431
432 return -EINVAL;
433}
434
435static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
436{
437 struct intel_connector *connector;
438 struct drm_connector_list_iter conn_iter;
439 struct opregion_asle *asle = dev_priv->opregion.asle;
440 struct drm_device *dev = &dev_priv->drm;
441
442 drm_dbg(&dev_priv->drm, "bclp = 0x%08x\n", bclp);
443
444 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
445 drm_dbg_kms(&dev_priv->drm,
446 "opregion backlight request ignored\n");
447 return 0;
448 }
449
450 if (!(bclp & ASLE_BCLP_VALID))
451 return ASLC_BACKLIGHT_FAILED;
452
453 bclp &= ASLE_BCLP_MSK;
454 if (bclp > 255)
455 return ASLC_BACKLIGHT_FAILED;
456
457 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
458
459
460
461
462
463 drm_dbg_kms(&dev_priv->drm, "updating opregion backlight %d/255\n",
464 bclp);
465 drm_connector_list_iter_begin(dev, &conn_iter);
466 for_each_intel_connector_iter(connector, &conn_iter)
467 intel_backlight_set_acpi(connector->base.state, bclp, 255);
468 drm_connector_list_iter_end(&conn_iter);
469 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
470
471 drm_modeset_unlock(&dev->mode_config.connection_mutex);
472
473
474 return 0;
475}
476
477static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
478{
479
480
481 drm_dbg(&dev_priv->drm, "Illum is not supported\n");
482 return ASLC_ALS_ILLUM_FAILED;
483}
484
485static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
486{
487 drm_dbg(&dev_priv->drm, "PWM freq is not supported\n");
488 return ASLC_PWM_FREQ_FAILED;
489}
490
491static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
492{
493
494
495 drm_dbg(&dev_priv->drm, "Pfit is not supported\n");
496 return ASLC_PFIT_FAILED;
497}
498
499static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
500{
501 drm_dbg(&dev_priv->drm, "SROT is not supported\n");
502 return ASLC_ROTATION_ANGLES_FAILED;
503}
504
505static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
506{
507 if (!iuer)
508 drm_dbg(&dev_priv->drm,
509 "Button array event is not supported (nothing)\n");
510 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
511 drm_dbg(&dev_priv->drm,
512 "Button array event is not supported (rotation lock)\n");
513 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
514 drm_dbg(&dev_priv->drm,
515 "Button array event is not supported (volume down)\n");
516 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
517 drm_dbg(&dev_priv->drm,
518 "Button array event is not supported (volume up)\n");
519 if (iuer & ASLE_IUER_WINDOWS_BTN)
520 drm_dbg(&dev_priv->drm,
521 "Button array event is not supported (windows)\n");
522 if (iuer & ASLE_IUER_POWER_BTN)
523 drm_dbg(&dev_priv->drm,
524 "Button array event is not supported (power)\n");
525
526 return ASLC_BUTTON_ARRAY_FAILED;
527}
528
529static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
530{
531 if (iuer & ASLE_IUER_CONVERTIBLE)
532 drm_dbg(&dev_priv->drm,
533 "Convertible is not supported (clamshell)\n");
534 else
535 drm_dbg(&dev_priv->drm,
536 "Convertible is not supported (slate)\n");
537
538 return ASLC_CONVERTIBLE_FAILED;
539}
540
541static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
542{
543 if (iuer & ASLE_IUER_DOCKING)
544 drm_dbg(&dev_priv->drm, "Docking is not supported (docked)\n");
545 else
546 drm_dbg(&dev_priv->drm,
547 "Docking is not supported (undocked)\n");
548
549 return ASLC_DOCKING_FAILED;
550}
551
552static u32 asle_isct_state(struct drm_i915_private *dev_priv)
553{
554 drm_dbg(&dev_priv->drm, "ISCT is not supported\n");
555 return ASLC_ISCT_STATE_FAILED;
556}
557
558static void asle_work(struct work_struct *work)
559{
560 struct intel_opregion *opregion =
561 container_of(work, struct intel_opregion, asle_work);
562 struct drm_i915_private *dev_priv =
563 container_of(opregion, struct drm_i915_private, opregion);
564 struct opregion_asle *asle = dev_priv->opregion.asle;
565 u32 aslc_stat = 0;
566 u32 aslc_req;
567
568 if (!asle)
569 return;
570
571 aslc_req = asle->aslc;
572
573 if (!(aslc_req & ASLC_REQ_MSK)) {
574 drm_dbg(&dev_priv->drm,
575 "No request on ASLC interrupt 0x%08x\n", aslc_req);
576 return;
577 }
578
579 if (aslc_req & ASLC_SET_ALS_ILLUM)
580 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
581
582 if (aslc_req & ASLC_SET_BACKLIGHT)
583 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
584
585 if (aslc_req & ASLC_SET_PFIT)
586 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
587
588 if (aslc_req & ASLC_SET_PWM_FREQ)
589 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
590
591 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
592 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
593 asle->srot);
594
595 if (aslc_req & ASLC_BUTTON_ARRAY)
596 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
597
598 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
599 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
600
601 if (aslc_req & ASLC_DOCKING_INDICATOR)
602 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
603
604 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
605 aslc_stat |= asle_isct_state(dev_priv);
606
607 asle->aslc = aslc_stat;
608}
609
610void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
611{
612 if (dev_priv->opregion.asle)
613 schedule_work(&dev_priv->opregion.asle_work);
614}
615
616#define ACPI_EV_DISPLAY_SWITCH (1<<0)
617#define ACPI_EV_LID (1<<1)
618#define ACPI_EV_DOCK (1<<2)
619
620
621
622
623
624
625static int intel_opregion_video_event(struct notifier_block *nb,
626 unsigned long val, void *data)
627{
628 struct intel_opregion *opregion = container_of(nb, struct intel_opregion,
629 acpi_notifier);
630 struct acpi_bus_event *event = data;
631 struct opregion_acpi *acpi;
632 int ret = NOTIFY_OK;
633
634 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
635 return NOTIFY_DONE;
636
637 acpi = opregion->acpi;
638
639 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
640 ret = NOTIFY_BAD;
641
642 acpi->csts = 0;
643
644 return ret;
645}
646
647
648
649
650
651
652
653static void set_did(struct intel_opregion *opregion, int i, u32 val)
654{
655 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
656 opregion->acpi->didl[i] = val;
657 } else {
658 i -= ARRAY_SIZE(opregion->acpi->didl);
659
660 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
661 return;
662
663 opregion->acpi->did2[i] = val;
664 }
665}
666
667static void intel_didl_outputs(struct drm_i915_private *dev_priv)
668{
669 struct intel_opregion *opregion = &dev_priv->opregion;
670 struct intel_connector *connector;
671 struct drm_connector_list_iter conn_iter;
672 int i = 0, max_outputs;
673
674
675
676
677
678
679
680
681 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
682 ARRAY_SIZE(opregion->acpi->did2);
683
684 intel_acpi_device_id_update(dev_priv);
685
686 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
687 for_each_intel_connector_iter(connector, &conn_iter) {
688 if (i < max_outputs)
689 set_did(opregion, i, connector->acpi_device_id);
690 i++;
691 }
692 drm_connector_list_iter_end(&conn_iter);
693
694 drm_dbg_kms(&dev_priv->drm, "%d outputs detected\n", i);
695
696 if (i > max_outputs)
697 drm_err(&dev_priv->drm,
698 "More than %d outputs in connector list\n",
699 max_outputs);
700
701
702 if (i < max_outputs)
703 set_did(opregion, i, 0);
704}
705
706static void intel_setup_cadls(struct drm_i915_private *dev_priv)
707{
708 struct intel_opregion *opregion = &dev_priv->opregion;
709 struct intel_connector *connector;
710 struct drm_connector_list_iter conn_iter;
711 int i = 0;
712
713
714
715
716
717
718
719
720
721
722
723 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
724 for_each_intel_connector_iter(connector, &conn_iter) {
725 if (i >= ARRAY_SIZE(opregion->acpi->cadl))
726 break;
727 opregion->acpi->cadl[i++] = connector->acpi_device_id;
728 }
729 drm_connector_list_iter_end(&conn_iter);
730
731
732 if (i < ARRAY_SIZE(opregion->acpi->cadl))
733 opregion->acpi->cadl[i] = 0;
734}
735
736static void swsci_setup(struct drm_i915_private *dev_priv)
737{
738 struct intel_opregion *opregion = &dev_priv->opregion;
739 bool requested_callbacks = false;
740 u32 tmp;
741
742
743 opregion->swsci_gbda_sub_functions = 1;
744 opregion->swsci_sbcb_sub_functions = 1;
745
746
747 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
748
749 tmp <<= 1;
750 opregion->swsci_gbda_sub_functions |= tmp;
751 }
752
753
754
755
756
757
758 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
759
760 opregion->swsci_sbcb_sub_functions |= tmp;
761 requested_callbacks = true;
762 }
763
764
765
766
767
768
769 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
770
771 u32 low = tmp & 0x7ff;
772 u32 high = tmp & ~0xfff;
773 tmp = (high << 4) | (low << 1) | 1;
774
775
776 if (requested_callbacks) {
777 u32 req = opregion->swsci_sbcb_sub_functions;
778 if ((req & tmp) != req)
779 drm_dbg(&dev_priv->drm,
780 "SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n",
781 req, tmp);
782
783
784 } else {
785 opregion->swsci_sbcb_sub_functions |= tmp;
786 }
787 }
788
789 drm_dbg(&dev_priv->drm,
790 "SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
791 opregion->swsci_gbda_sub_functions,
792 opregion->swsci_sbcb_sub_functions);
793}
794
795static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
796{
797 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
798 "VBIOS ROM for %s\n", id->ident);
799 return 1;
800}
801
802static const struct dmi_system_id intel_no_opregion_vbt[] = {
803 {
804 .callback = intel_no_opregion_vbt_callback,
805 .ident = "ThinkCentre A57",
806 .matches = {
807 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
808 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
809 },
810 },
811 { }
812};
813
814static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
815{
816 struct intel_opregion *opregion = &dev_priv->opregion;
817 const struct firmware *fw = NULL;
818 const char *name = dev_priv->params.vbt_firmware;
819 int ret;
820
821 if (!name || !*name)
822 return -ENOENT;
823
824 ret = request_firmware(&fw, name, dev_priv->drm.dev);
825 if (ret) {
826 drm_err(&dev_priv->drm,
827 "Requesting VBT firmware \"%s\" failed (%d)\n",
828 name, ret);
829 return ret;
830 }
831
832 if (intel_bios_is_valid_vbt(fw->data, fw->size)) {
833 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL);
834 if (opregion->vbt_firmware) {
835 drm_dbg_kms(&dev_priv->drm,
836 "Found valid VBT firmware \"%s\"\n", name);
837 opregion->vbt = opregion->vbt_firmware;
838 opregion->vbt_size = fw->size;
839 ret = 0;
840 } else {
841 ret = -ENOMEM;
842 }
843 } else {
844 drm_dbg_kms(&dev_priv->drm, "Invalid VBT firmware \"%s\"\n",
845 name);
846 ret = -EINVAL;
847 }
848
849 release_firmware(fw);
850
851 return ret;
852}
853
854int intel_opregion_setup(struct drm_i915_private *dev_priv)
855{
856 struct intel_opregion *opregion = &dev_priv->opregion;
857 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
858 u32 asls, mboxes;
859 char buf[sizeof(OPREGION_SIGNATURE)];
860 int err = 0;
861 void *base;
862 const void *vbt;
863 u32 vbt_size;
864
865 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
866 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
867 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
868 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
869 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
870
871 pci_read_config_dword(pdev, ASLS, &asls);
872 drm_dbg(&dev_priv->drm, "graphic opregion physical addr: 0x%x\n",
873 asls);
874 if (asls == 0) {
875 drm_dbg(&dev_priv->drm, "ACPI OpRegion not supported!\n");
876 return -ENOTSUPP;
877 }
878
879 INIT_WORK(&opregion->asle_work, asle_work);
880
881 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
882 if (!base)
883 return -ENOMEM;
884
885 memcpy(buf, base, sizeof(buf));
886
887 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
888 drm_dbg(&dev_priv->drm, "opregion signature mismatch\n");
889 err = -EINVAL;
890 goto err_out;
891 }
892 opregion->header = base;
893 opregion->lid_state = base + ACPI_CLID;
894
895 drm_dbg(&dev_priv->drm, "ACPI OpRegion version %u.%u.%u\n",
896 opregion->header->over.major,
897 opregion->header->over.minor,
898 opregion->header->over.revision);
899
900 mboxes = opregion->header->mboxes;
901 if (mboxes & MBOX_ACPI) {
902 drm_dbg(&dev_priv->drm, "Public ACPI methods supported\n");
903 opregion->acpi = base + OPREGION_ACPI_OFFSET;
904
905
906
907
908
909
910 opregion->acpi->chpd = 1;
911 }
912
913 if (mboxes & MBOX_SWSCI) {
914 drm_dbg(&dev_priv->drm, "SWSCI supported\n");
915 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
916 swsci_setup(dev_priv);
917 }
918
919 if (mboxes & MBOX_ASLE) {
920 drm_dbg(&dev_priv->drm, "ASLE supported\n");
921 opregion->asle = base + OPREGION_ASLE_OFFSET;
922
923 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
924 }
925
926 if (mboxes & MBOX_ASLE_EXT)
927 drm_dbg(&dev_priv->drm, "ASLE extension supported\n");
928
929 if (intel_load_vbt_firmware(dev_priv) == 0)
930 goto out;
931
932 if (dmi_check_system(intel_no_opregion_vbt))
933 goto out;
934
935 if (opregion->header->over.major >= 2 && opregion->asle &&
936 opregion->asle->rvda && opregion->asle->rvds) {
937 resource_size_t rvda = opregion->asle->rvda;
938
939
940
941
942
943
944
945 if (opregion->header->over.major > 2 ||
946 opregion->header->over.minor >= 1) {
947 drm_WARN_ON(&dev_priv->drm, rvda < OPREGION_SIZE);
948
949 rvda += asls;
950 }
951
952 opregion->rvda = memremap(rvda, opregion->asle->rvds,
953 MEMREMAP_WB);
954
955 vbt = opregion->rvda;
956 vbt_size = opregion->asle->rvds;
957 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
958 drm_dbg_kms(&dev_priv->drm,
959 "Found valid VBT in ACPI OpRegion (RVDA)\n");
960 opregion->vbt = vbt;
961 opregion->vbt_size = vbt_size;
962 goto out;
963 } else {
964 drm_dbg_kms(&dev_priv->drm,
965 "Invalid VBT in ACPI OpRegion (RVDA)\n");
966 memunmap(opregion->rvda);
967 opregion->rvda = NULL;
968 }
969 }
970
971 vbt = base + OPREGION_VBT_OFFSET;
972
973
974
975
976
977
978
979 vbt_size = (mboxes & MBOX_ASLE_EXT) ?
980 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
981 vbt_size -= OPREGION_VBT_OFFSET;
982 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
983 drm_dbg_kms(&dev_priv->drm,
984 "Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
985 opregion->vbt = vbt;
986 opregion->vbt_size = vbt_size;
987 } else {
988 drm_dbg_kms(&dev_priv->drm,
989 "Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
990 }
991
992out:
993 return 0;
994
995err_out:
996 memunmap(base);
997 return err;
998}
999
1000static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1001{
1002 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1003 return 1;
1004}
1005
1006static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1007 {
1008 .callback = intel_use_opregion_panel_type_callback,
1009 .ident = "Conrac GmbH IX45GM2",
1010 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1011 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1012 },
1013 },
1014 { }
1015};
1016
1017int
1018intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1019{
1020 u32 panel_details;
1021 int ret;
1022
1023 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1024 if (ret)
1025 return ret;
1026
1027 ret = (panel_details >> 8) & 0xff;
1028 if (ret > 0x10) {
1029 drm_dbg_kms(&dev_priv->drm,
1030 "Invalid OpRegion panel type 0x%x\n", ret);
1031 return -EINVAL;
1032 }
1033
1034
1035 if (ret == 0x0) {
1036 drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n");
1037 return -ENODEV;
1038 }
1039
1040
1041
1042
1043
1044
1045 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1046 drm_dbg_kms(&dev_priv->drm,
1047 "Ignoring OpRegion panel type (%d)\n", ret - 1);
1048 return -ENODEV;
1049 }
1050
1051 return ret - 1;
1052}
1053
1054void intel_opregion_register(struct drm_i915_private *i915)
1055{
1056 struct intel_opregion *opregion = &i915->opregion;
1057
1058 if (!opregion->header)
1059 return;
1060
1061 if (opregion->acpi) {
1062 opregion->acpi_notifier.notifier_call =
1063 intel_opregion_video_event;
1064 register_acpi_notifier(&opregion->acpi_notifier);
1065 }
1066
1067 intel_opregion_resume(i915);
1068}
1069
1070void intel_opregion_resume(struct drm_i915_private *i915)
1071{
1072 struct intel_opregion *opregion = &i915->opregion;
1073
1074 if (!opregion->header)
1075 return;
1076
1077 if (opregion->acpi) {
1078 intel_didl_outputs(i915);
1079 intel_setup_cadls(i915);
1080
1081
1082
1083
1084
1085
1086 opregion->acpi->csts = 0;
1087 opregion->acpi->drdy = 1;
1088 }
1089
1090 if (opregion->asle) {
1091 opregion->asle->tche = ASLE_TCHE_BLC_EN;
1092 opregion->asle->ardy = ASLE_ARDY_READY;
1093 }
1094
1095
1096 intel_dsm_get_bios_data_funcs_supported(i915);
1097
1098 intel_opregion_notify_adapter(i915, PCI_D0);
1099}
1100
1101void intel_opregion_suspend(struct drm_i915_private *i915, pci_power_t state)
1102{
1103 struct intel_opregion *opregion = &i915->opregion;
1104
1105 if (!opregion->header)
1106 return;
1107
1108 intel_opregion_notify_adapter(i915, state);
1109
1110 if (opregion->asle)
1111 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
1112
1113 cancel_work_sync(&i915->opregion.asle_work);
1114
1115 if (opregion->acpi)
1116 opregion->acpi->drdy = 0;
1117}
1118
1119void intel_opregion_unregister(struct drm_i915_private *i915)
1120{
1121 struct intel_opregion *opregion = &i915->opregion;
1122
1123 intel_opregion_suspend(i915, PCI_D1);
1124
1125 if (!opregion->header)
1126 return;
1127
1128 if (opregion->acpi_notifier.notifier_call) {
1129 unregister_acpi_notifier(&opregion->acpi_notifier);
1130 opregion->acpi_notifier.notifier_call = NULL;
1131 }
1132
1133
1134 memunmap(opregion->header);
1135 if (opregion->rvda) {
1136 memunmap(opregion->rvda);
1137 opregion->rvda = NULL;
1138 }
1139 if (opregion->vbt_firmware) {
1140 kfree(opregion->vbt_firmware);
1141 opregion->vbt_firmware = NULL;
1142 }
1143 opregion->header = NULL;
1144 opregion->acpi = NULL;
1145 opregion->swsci = NULL;
1146 opregion->asle = NULL;
1147 opregion->vbt = NULL;
1148 opregion->lid_state = NULL;
1149}
1150