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 "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 /* current lid state indicator */
42 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
43 #define OPREGION_SWSCI_OFFSET 0x200
44 #define OPREGION_ASLE_OFFSET 0x300
45 #define OPREGION_VBT_OFFSET 0x400
46 #define OPREGION_ASLE_EXT_OFFSET 0x1C00
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
54 struct 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 /* OpRegion mailbox #1: public ACPI methods */
74 struct opregion_acpi {
75 u32 drdy; /* driver readiness */
76 u32 csts; /* notification status */
77 u32 cevt; /* current event */
78 u8 rsvd1[20];
79 u32 didl[8]; /* supported display devices ID list */
80 u32 cpdl[8]; /* currently presented display list */
81 u32 cadl[8]; /* currently active display list */
82 u32 nadl[8]; /* next active devices list */
83 u32 aslp; /* ASL sleep time-out */
84 u32 tidx; /* toggle table index */
85 u32 chpd; /* current hotplug enable indicator */
86 u32 clid; /* current lid state*/
87 u32 cdck; /* current docking state */
88 u32 sxsw; /* Sx state resume */
89 u32 evts; /* ASL supported events */
90 u32 cnot; /* current OS notification */
91 u32 nrdy; /* driver status */
92 u32 did2[7]; /* extended supported display devices ID list */
93 u32 cpd2[7]; /* extended attached display devices list */
94 u8 rsvd2[4];
95 } __packed;
96
97 /* OpRegion mailbox #2: SWSCI */
98 struct opregion_swsci {
99 u32 scic; /* SWSCI command|status|data */
100 u32 parm; /* command parameters */
101 u32 dslp; /* driver sleep time-out */
102 u8 rsvd[244];
103 } __packed;
104
105 /* OpRegion mailbox #3: ASLE */
106 struct opregion_asle {
107 u32 ardy; /* driver readiness */
108 u32 aslc; /* ASLE interrupt command */
109 u32 tche; /* technology enabled indicator */
110 u32 alsi; /* current ALS illuminance reading */
111 u32 bclp; /* backlight brightness to set */
112 u32 pfit; /* panel fitting state */
113 u32 cblv; /* current brightness level */
114 u16 bclm[20]; /* backlight level duty cycle mapping table */
115 u32 cpfm; /* current panel fitting mode */
116 u32 epfm; /* enabled panel fitting modes */
117 u8 plut[74]; /* panel LUT and identifier */
118 u32 pfmb; /* PWM freq and min brightness */
119 u32 cddv; /* color correction default values */
120 u32 pcft; /* power conservation features */
121 u32 srot; /* supported rotation angles */
122 u32 iuer; /* IUER events */
123 u64 fdss;
124 u32 fdsp;
125 u32 stat;
126 u64 rvda; /* Physical (2.0) or relative from opregion (2.1+)
127 * address of raw VBT data. */
128 u32 rvds; /* Size of raw vbt data */
129 u8 rsvd[58];
130 } __packed;
131
132 /* OpRegion mailbox #5: ASLE ext */
133 struct opregion_asle_ext {
134 u32 phed; /* Panel Header */
135 u8 bddc[256]; /* Panel EDID */
136 u8 rsvd[764];
137 } __packed;
138
139 /* Driver readiness indicator */
140 #define ASLE_ARDY_READY (1 << 0)
141 #define ASLE_ARDY_NOT_READY (0 << 0)
142
143 /* ASLE Interrupt Command (ASLC) bits */
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 /* response bits */
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 /* Technology enabled indicator */
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 /* ASLE backlight brightness to set */
172 #define ASLE_BCLP_VALID (1<<31)
173 #define ASLE_BCLP_MSK (~(1<<31))
174
175 /* ASLE panel fitting request */
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 /* PWM frequency and minimum brightness */
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 /* IUER */
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 /* Software System Control Interrupt (SWSCI) */
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 /* SWSCI: Get BIOS Data (GBDA) */
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 /* SWSCI: System BIOS Callbacks (SBCB) */
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
swsci(struct drm_i915_private * dev_priv,u32 function,u32 parm,u32 * parm_out)245 static 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 /* Check if we can call the function. See swsci_setup for details. */
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 /* Driver sleep timeout in ms. */
274 dslp = swsci->dslp;
275 if (!dslp) {
276 /* The spec says 2ms should be the default, but it's too small
277 * for some machines. */
278 dslp = 50;
279 } else if (dslp > MAX_DSLP) {
280 /* Hey bios, trust must be earned. */
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 /* The spec tells us to do this, but we are the only user... */
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 /* Ensure SCI event is selected and event trigger is cleared. */
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 /* Use event trigger to tell bios to check the mail. */
307 swsci_val |= SWSCI_GSSCIE;
308 pci_write_config_word(pdev, SWSCI, swsci_val);
309
310 /* Poll for the result. */
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 /* Note: scic == 0 is an error! */
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
intel_opregion_notify_encoder(struct intel_encoder * intel_encoder,bool enable)339 int 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 /* don't care about old stuff for now */
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 * The port numbering and mapping here is bizarre. The now-obsolete
365 * swsci spec supports ports numbered [0..4]. Port E is handled as a
366 * special case, but port F and beyond are not. The functionality is
367 * supposed to be obsolete for new platforms. Just bail out if the port
368 * number is out of bounds after mapping.
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
407 static 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
intel_opregion_notify_adapter(struct drm_i915_private * dev_priv,pci_power_t state)418 int 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
asle_set_backlight(struct drm_i915_private * dev_priv,u32 bclp)435 static 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 * Update backlight on all connectors that support backlight (usually
461 * only one).
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_panel_set_backlight_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
asle_set_als_illum(struct drm_i915_private * dev_priv,u32 alsi)477 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
478 {
479 /* alsi is the current ALS reading in lux. 0 indicates below sensor
480 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
481 drm_dbg(&dev_priv->drm, "Illum is not supported\n");
482 return ASLC_ALS_ILLUM_FAILED;
483 }
484
asle_set_pwm_freq(struct drm_i915_private * dev_priv,u32 pfmb)485 static 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
asle_set_pfit(struct drm_i915_private * dev_priv,u32 pfit)491 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
492 {
493 /* Panel fitting is currently controlled by the X code, so this is a
494 noop until modesetting support works fully */
495 drm_dbg(&dev_priv->drm, "Pfit is not supported\n");
496 return ASLC_PFIT_FAILED;
497 }
498
asle_set_supported_rotation_angles(struct drm_i915_private * dev_priv,u32 srot)499 static 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
asle_set_button_array(struct drm_i915_private * dev_priv,u32 iuer)505 static 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
asle_set_convertible(struct drm_i915_private * dev_priv,u32 iuer)529 static 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
asle_set_docking(struct drm_i915_private * dev_priv,u32 iuer)541 static 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
asle_isct_state(struct drm_i915_private * dev_priv)552 static 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
asle_work(struct work_struct * work)558 static 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
intel_opregion_asle_intr(struct drm_i915_private * dev_priv)610 void 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 * The only video events relevant to opregion are 0x80. These indicate either a
622 * docking event, lid switch or display switch request. In Linux, these are
623 * handled by the dock, button and video drivers.
624 */
intel_opregion_video_event(struct notifier_block * nb,unsigned long val,void * data)625 static 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 * Initialise the DIDL field in opregion. This passes a list of devices to
649 * the firmware. Values are defined by section B.4.2 of the ACPI specification
650 * (version 3)
651 */
652
set_did(struct intel_opregion * opregion,int i,u32 val)653 static 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
intel_didl_outputs(struct drm_i915_private * dev_priv)667 static 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 * In theory, did2, the extended didl, gets added at opregion version
676 * 3.0. In practice, however, we're supposed to set it for earlier
677 * versions as well, since a BIOS that doesn't understand did2 should
678 * not look at it anyway. Use a variable so we can tweak this if a need
679 * arises later.
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 /* If fewer than max outputs, the list must be null terminated */
702 if (i < max_outputs)
703 set_did(opregion, i, 0);
704 }
705
intel_setup_cadls(struct drm_i915_private * dev_priv)706 static 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 * Initialize the CADL field from the connector device ids. This is
715 * essentially the same as copying from the DIDL. Technically, this is
716 * not always correct as display outputs may exist, but not active. This
717 * initialization is necessary for some Clevo laptops that check this
718 * field before processing the brightness and display switching hotkeys.
719 *
720 * Note that internal panels should be at the front of the connector
721 * list already, ensuring they're not left out.
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 /* If fewer than 8 active devices, the list must be null terminated */
732 if (i < ARRAY_SIZE(opregion->acpi->cadl))
733 opregion->acpi->cadl[i] = 0;
734 }
735
swsci_setup(struct drm_i915_private * dev_priv)736 static 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 /* Sub-function code 0 is okay, let's allow them. */
743 opregion->swsci_gbda_sub_functions = 1;
744 opregion->swsci_sbcb_sub_functions = 1;
745
746 /* We use GBDA to ask for supported GBDA calls. */
747 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
748 /* make the bits match the sub-function codes */
749 tmp <<= 1;
750 opregion->swsci_gbda_sub_functions |= tmp;
751 }
752
753 /*
754 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
755 * must not call interfaces that are not specifically requested by the
756 * bios.
757 */
758 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
759 /* here, the bits already match sub-function codes */
760 opregion->swsci_sbcb_sub_functions |= tmp;
761 requested_callbacks = true;
762 }
763
764 /*
765 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
766 * the callback is _requested_. But we still can't call interfaces that
767 * are not requested.
768 */
769 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
770 /* make the bits match the sub-function codes */
771 u32 low = tmp & 0x7ff;
772 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
773 tmp = (high << 4) | (low << 1) | 1;
774
775 /* best guess what to do with supported wrt requested */
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 /* XXX: for now, trust the requested callbacks */
783 /* opregion->swsci_sbcb_sub_functions &= tmp; */
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
intel_no_opregion_vbt_callback(const struct dmi_system_id * id)795 static 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
802 static 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
intel_load_vbt_firmware(struct drm_i915_private * dev_priv)814 static 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
intel_opregion_setup(struct drm_i915_private * dev_priv)854 int 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 * Indicate we handle monitor hotplug events ourselves so we do
906 * not need ACPI notifications for them. Disabling these avoids
907 * triggering the AML code doing the notifation, which may be
908 * broken as Windows also seems to disable these.
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 * opregion 2.0: rvda is the physical VBT address.
941 *
942 * opregion 2.1+: rvda is unsigned, relative offset from
943 * opregion base, and should never point within opregion.
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 * The VBT specification says that if the ASLE ext mailbox is not used
974 * its area is reserved, but on some CHT boards the VBT extends into the
975 * ASLE ext area. Allow this even though it is against the spec, so we
976 * do not end up rejecting the VBT on those boards (and end up not
977 * finding the LCD panel because of this).
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
992 out:
993 return 0;
994
995 err_out:
996 memunmap(base);
997 return err;
998 }
999
intel_use_opregion_panel_type_callback(const struct dmi_system_id * id)1000 static 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
1006 static 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
1017 int
intel_opregion_get_panel_type(struct drm_i915_private * dev_priv)1018 intel_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 /* fall back to VBT panel type? */
1035 if (ret == 0x0) {
1036 drm_dbg_kms(&dev_priv->drm, "No panel type in OpRegion\n");
1037 return -ENODEV;
1038 }
1039
1040 /*
1041 * So far we know that some machined must use it, others must not use it.
1042 * There doesn't seem to be any way to determine which way to go, except
1043 * via a quirk list :(
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
intel_opregion_register(struct drm_i915_private * i915)1054 void 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
intel_opregion_resume(struct drm_i915_private * i915)1070 void 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 * Notify BIOS we are ready to handle ACPI video ext notifs.
1083 * Right now, all the events are handled by the ACPI video
1084 * module. We don't actually need to do anything with them.
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 /* Some platforms abuse the _DSM to enable MUX */
1096 intel_dsm_get_bios_data_funcs_supported(i915);
1097
1098 intel_opregion_notify_adapter(i915, PCI_D0);
1099 }
1100
intel_opregion_suspend(struct drm_i915_private * i915,pci_power_t state)1101 void 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
intel_opregion_unregister(struct drm_i915_private * i915)1119 void 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 /* just clear all opregion memory pointers now */
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