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