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