Commit | Line | Data |
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8ee1c3db MG |
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 | ||
a70491cc JP |
28 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
29 | ||
8ee1c3db | 30 | #include <linux/acpi.h> |
b705120e | 31 | #include <linux/acpi_io.h> |
74a365b3 | 32 | #include <acpi/video.h> |
8ee1c3db | 33 | |
760285e7 DH |
34 | #include <drm/drmP.h> |
35 | #include <drm/i915_drm.h> | |
8ee1c3db | 36 | #include "i915_drv.h" |
a9573556 | 37 | #include "intel_drv.h" |
8ee1c3db MG |
38 | |
39 | #define PCI_ASLE 0xe4 | |
8ee1c3db MG |
40 | #define PCI_ASLS 0xfc |
41 | ||
8ee1c3db MG |
42 | #define OPREGION_HEADER_OFFSET 0 |
43 | #define OPREGION_ACPI_OFFSET 0x100 | |
82d3c90c CW |
44 | #define ACPI_CLID 0x01ac /* current lid state indicator */ |
45 | #define ACPI_CDCK 0x01b0 /* current docking state indicator */ | |
8ee1c3db MG |
46 | #define OPREGION_SWSCI_OFFSET 0x200 |
47 | #define OPREGION_ASLE_OFFSET 0x300 | |
44834a67 | 48 | #define OPREGION_VBT_OFFSET 0x400 |
8ee1c3db MG |
49 | |
50 | #define OPREGION_SIGNATURE "IntelGraphicsMem" | |
51 | #define MBOX_ACPI (1<<0) | |
52 | #define MBOX_SWSCI (1<<1) | |
53 | #define MBOX_ASLE (1<<2) | |
54 | ||
55 | struct opregion_header { | |
0206e353 AJ |
56 | u8 signature[16]; |
57 | u32 size; | |
58 | u32 opregion_ver; | |
59 | u8 bios_ver[32]; | |
60 | u8 vbios_ver[16]; | |
61 | u8 driver_ver[16]; | |
62 | u32 mboxes; | |
63 | u8 reserved[164]; | |
8ee1c3db MG |
64 | } __attribute__((packed)); |
65 | ||
66 | /* OpRegion mailbox #1: public ACPI methods */ | |
67 | struct opregion_acpi { | |
0206e353 AJ |
68 | u32 drdy; /* driver readiness */ |
69 | u32 csts; /* notification status */ | |
70 | u32 cevt; /* current event */ | |
71 | u8 rsvd1[20]; | |
72 | u32 didl[8]; /* supported display devices ID list */ | |
73 | u32 cpdl[8]; /* currently presented display list */ | |
74 | u32 cadl[8]; /* currently active display list */ | |
75 | u32 nadl[8]; /* next active devices list */ | |
76 | u32 aslp; /* ASL sleep time-out */ | |
77 | u32 tidx; /* toggle table index */ | |
78 | u32 chpd; /* current hotplug enable indicator */ | |
79 | u32 clid; /* current lid state*/ | |
80 | u32 cdck; /* current docking state */ | |
81 | u32 sxsw; /* Sx state resume */ | |
82 | u32 evts; /* ASL supported events */ | |
83 | u32 cnot; /* current OS notification */ | |
84 | u32 nrdy; /* driver status */ | |
85 | u8 rsvd2[60]; | |
8ee1c3db MG |
86 | } __attribute__((packed)); |
87 | ||
88 | /* OpRegion mailbox #2: SWSCI */ | |
89 | struct opregion_swsci { | |
0206e353 AJ |
90 | u32 scic; /* SWSCI command|status|data */ |
91 | u32 parm; /* command parameters */ | |
92 | u32 dslp; /* driver sleep time-out */ | |
93 | u8 rsvd[244]; | |
8ee1c3db MG |
94 | } __attribute__((packed)); |
95 | ||
96 | /* OpRegion mailbox #3: ASLE */ | |
97 | struct opregion_asle { | |
0206e353 AJ |
98 | u32 ardy; /* driver readiness */ |
99 | u32 aslc; /* ASLE interrupt command */ | |
100 | u32 tche; /* technology enabled indicator */ | |
101 | u32 alsi; /* current ALS illuminance reading */ | |
102 | u32 bclp; /* backlight brightness to set */ | |
103 | u32 pfit; /* panel fitting state */ | |
104 | u32 cblv; /* current brightness level */ | |
105 | u16 bclm[20]; /* backlight level duty cycle mapping table */ | |
106 | u32 cpfm; /* current panel fitting mode */ | |
107 | u32 epfm; /* enabled panel fitting modes */ | |
108 | u8 plut[74]; /* panel LUT and identifier */ | |
109 | u32 pfmb; /* PWM freq and min brightness */ | |
110 | u8 rsvd[102]; | |
8ee1c3db MG |
111 | } __attribute__((packed)); |
112 | ||
113 | /* ASLE irq request bits */ | |
114 | #define ASLE_SET_ALS_ILLUM (1 << 0) | |
115 | #define ASLE_SET_BACKLIGHT (1 << 1) | |
116 | #define ASLE_SET_PFIT (1 << 2) | |
117 | #define ASLE_SET_PWM_FREQ (1 << 3) | |
118 | #define ASLE_REQ_MSK 0xf | |
119 | ||
120 | /* response bits of ASLE irq request */ | |
01c66889 ZY |
121 | #define ASLE_ALS_ILLUM_FAILED (1<<10) |
122 | #define ASLE_BACKLIGHT_FAILED (1<<12) | |
123 | #define ASLE_PFIT_FAILED (1<<14) | |
124 | #define ASLE_PWM_FREQ_FAILED (1<<16) | |
8ee1c3db | 125 | |
f599cc29 JN |
126 | /* Technology enabled indicator */ |
127 | #define ASLE_TCHE_ALS_EN (1 << 0) | |
128 | #define ASLE_TCHE_BLC_EN (1 << 1) | |
129 | #define ASLE_TCHE_PFIT_EN (1 << 2) | |
130 | #define ASLE_TCHE_PFMB_EN (1 << 3) | |
131 | ||
8ee1c3db MG |
132 | /* ASLE backlight brightness to set */ |
133 | #define ASLE_BCLP_VALID (1<<31) | |
134 | #define ASLE_BCLP_MSK (~(1<<31)) | |
135 | ||
136 | /* ASLE panel fitting request */ | |
137 | #define ASLE_PFIT_VALID (1<<31) | |
138 | #define ASLE_PFIT_CENTER (1<<0) | |
139 | #define ASLE_PFIT_STRETCH_TEXT (1<<1) | |
140 | #define ASLE_PFIT_STRETCH_GFX (1<<2) | |
141 | ||
142 | /* PWM frequency and minimum brightness */ | |
143 | #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) | |
144 | #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) | |
145 | #define ASLE_PFMB_PWM_MASK (0x7ffffe00) | |
146 | #define ASLE_PFMB_PWM_VALID (1<<31) | |
147 | ||
148 | #define ASLE_CBLV_VALID (1<<31) | |
149 | ||
74a365b3 MG |
150 | #define ACPI_OTHER_OUTPUT (0<<8) |
151 | #define ACPI_VGA_OUTPUT (1<<8) | |
152 | #define ACPI_TV_OUTPUT (2<<8) | |
153 | #define ACPI_DIGITAL_OUTPUT (3<<8) | |
154 | #define ACPI_LVDS_OUTPUT (4<<8) | |
155 | ||
44834a67 | 156 | #ifdef CONFIG_ACPI |
8ee1c3db MG |
157 | static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) |
158 | { | |
159 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5bc4418b | 160 | struct opregion_asle __iomem *asle = dev_priv->opregion.asle; |
8ee1c3db | 161 | |
749052fb JN |
162 | DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); |
163 | ||
8ee1c3db | 164 | if (!(bclp & ASLE_BCLP_VALID)) |
862daefc | 165 | return ASLE_BACKLIGHT_FAILED; |
8ee1c3db MG |
166 | |
167 | bclp &= ASLE_BCLP_MSK; | |
a9573556 | 168 | if (bclp > 255) |
862daefc | 169 | return ASLE_BACKLIGHT_FAILED; |
8ee1c3db | 170 | |
d6540632 | 171 | intel_panel_set_backlight(dev, bclp, 255); |
5bc4418b | 172 | iowrite32((bclp*0x64)/0xff | ASLE_CBLV_VALID, &asle->cblv); |
8ee1c3db MG |
173 | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) | |
178 | { | |
179 | /* alsi is the current ALS reading in lux. 0 indicates below sensor | |
180 | range, 0xffff indicates above sensor range. 1-0xfffe are valid */ | |
e93d440b JN |
181 | DRM_DEBUG_DRIVER("Illum is not supported\n"); |
182 | return ASLE_ALS_ILLUM_FAILED; | |
8ee1c3db MG |
183 | } |
184 | ||
185 | static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) | |
186 | { | |
e93d440b JN |
187 | DRM_DEBUG_DRIVER("PWM freq is not supported\n"); |
188 | return ASLE_PWM_FREQ_FAILED; | |
8ee1c3db MG |
189 | } |
190 | ||
191 | static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) | |
192 | { | |
193 | /* Panel fitting is currently controlled by the X code, so this is a | |
194 | noop until modesetting support works fully */ | |
e93d440b JN |
195 | DRM_DEBUG_DRIVER("Pfit is not supported\n"); |
196 | return ASLE_PFIT_FAILED; | |
8ee1c3db MG |
197 | } |
198 | ||
3b617967 | 199 | void intel_opregion_asle_intr(struct drm_device *dev) |
8ee1c3db MG |
200 | { |
201 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5bc4418b | 202 | struct opregion_asle __iomem *asle = dev_priv->opregion.asle; |
8ee1c3db MG |
203 | u32 asle_stat = 0; |
204 | u32 asle_req; | |
205 | ||
206 | if (!asle) | |
207 | return; | |
208 | ||
5bc4418b | 209 | asle_req = ioread32(&asle->aslc) & ASLE_REQ_MSK; |
8ee1c3db MG |
210 | |
211 | if (!asle_req) { | |
44d98a61 | 212 | DRM_DEBUG_DRIVER("non asle set request??\n"); |
8ee1c3db MG |
213 | return; |
214 | } | |
215 | ||
216 | if (asle_req & ASLE_SET_ALS_ILLUM) | |
5bc4418b | 217 | asle_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi)); |
8ee1c3db MG |
218 | |
219 | if (asle_req & ASLE_SET_BACKLIGHT) | |
5bc4418b | 220 | asle_stat |= asle_set_backlight(dev, ioread32(&asle->bclp)); |
8ee1c3db MG |
221 | |
222 | if (asle_req & ASLE_SET_PFIT) | |
5bc4418b | 223 | asle_stat |= asle_set_pfit(dev, ioread32(&asle->pfit)); |
8ee1c3db MG |
224 | |
225 | if (asle_req & ASLE_SET_PWM_FREQ) | |
5bc4418b | 226 | asle_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb)); |
8ee1c3db | 227 | |
5bc4418b | 228 | iowrite32(asle_stat, &asle->aslc); |
8ee1c3db MG |
229 | } |
230 | ||
3b617967 | 231 | void intel_opregion_enable_asle(struct drm_device *dev) |
8ee1c3db MG |
232 | { |
233 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5bc4418b | 234 | struct opregion_asle __iomem *asle = dev_priv->opregion.asle; |
8ee1c3db MG |
235 | |
236 | if (asle) { | |
1ec14ad3 | 237 | if (IS_MOBILE(dev)) |
01c66889 | 238 | intel_enable_asle(dev); |
8ee1c3db | 239 | |
f599cc29 | 240 | iowrite32(ASLE_TCHE_BLC_EN, &asle->tche); |
5bc4418b | 241 | iowrite32(1, &asle->ardy); |
8ee1c3db MG |
242 | } |
243 | } | |
244 | ||
245 | #define ACPI_EV_DISPLAY_SWITCH (1<<0) | |
246 | #define ACPI_EV_LID (1<<1) | |
247 | #define ACPI_EV_DOCK (1<<2) | |
248 | ||
249 | static struct intel_opregion *system_opregion; | |
250 | ||
b358d0a6 HE |
251 | static int intel_opregion_video_event(struct notifier_block *nb, |
252 | unsigned long val, void *data) | |
8ee1c3db MG |
253 | { |
254 | /* The only video events relevant to opregion are 0x80. These indicate | |
255 | either a docking event, lid switch or display switch request. In | |
256 | Linux, these are handled by the dock, button and video drivers. | |
f5a3d0c4 | 257 | */ |
8ee1c3db | 258 | |
5bc4418b | 259 | struct opregion_acpi __iomem *acpi; |
f5a3d0c4 MG |
260 | struct acpi_bus_event *event = data; |
261 | int ret = NOTIFY_OK; | |
262 | ||
263 | if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) | |
264 | return NOTIFY_DONE; | |
8ee1c3db MG |
265 | |
266 | if (!system_opregion) | |
267 | return NOTIFY_DONE; | |
268 | ||
269 | acpi = system_opregion->acpi; | |
f5a3d0c4 | 270 | |
5bc4418b BW |
271 | if (event->type == 0x80 && |
272 | (ioread32(&acpi->cevt) & 1) == 0) | |
f5a3d0c4 MG |
273 | ret = NOTIFY_BAD; |
274 | ||
5bc4418b | 275 | iowrite32(0, &acpi->csts); |
8ee1c3db | 276 | |
f5a3d0c4 | 277 | return ret; |
8ee1c3db MG |
278 | } |
279 | ||
280 | static struct notifier_block intel_opregion_notifier = { | |
281 | .notifier_call = intel_opregion_video_event, | |
282 | }; | |
283 | ||
74a365b3 MG |
284 | /* |
285 | * Initialise the DIDL field in opregion. This passes a list of devices to | |
286 | * the firmware. Values are defined by section B.4.2 of the ACPI specification | |
287 | * (version 3) | |
288 | */ | |
289 | ||
290 | static void intel_didl_outputs(struct drm_device *dev) | |
291 | { | |
292 | struct drm_i915_private *dev_priv = dev->dev_private; | |
293 | struct intel_opregion *opregion = &dev_priv->opregion; | |
294 | struct drm_connector *connector; | |
3143751f ZR |
295 | acpi_handle handle; |
296 | struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL; | |
297 | unsigned long long device_id; | |
298 | acpi_status status; | |
5bc4418b | 299 | u32 temp; |
74a365b3 MG |
300 | int i = 0; |
301 | ||
3143751f | 302 | handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev); |
7d37beaa | 303 | if (!handle || acpi_bus_get_device(handle, &acpi_dev)) |
3143751f ZR |
304 | return; |
305 | ||
306 | if (acpi_is_video_device(acpi_dev)) | |
307 | acpi_video_bus = acpi_dev; | |
308 | else { | |
309 | list_for_each_entry(acpi_cdev, &acpi_dev->children, node) { | |
310 | if (acpi_is_video_device(acpi_cdev)) { | |
311 | acpi_video_bus = acpi_cdev; | |
312 | break; | |
313 | } | |
314 | } | |
315 | } | |
316 | ||
317 | if (!acpi_video_bus) { | |
a70491cc | 318 | pr_warn("No ACPI video bus found\n"); |
3143751f ZR |
319 | return; |
320 | } | |
321 | ||
322 | list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) { | |
323 | if (i >= 8) { | |
0206e353 | 324 | dev_printk(KERN_ERR, &dev->pdev->dev, |
3143751f ZR |
325 | "More than 8 outputs detected\n"); |
326 | return; | |
327 | } | |
328 | status = | |
329 | acpi_evaluate_integer(acpi_cdev->handle, "_ADR", | |
330 | NULL, &device_id); | |
331 | if (ACPI_SUCCESS(status)) { | |
332 | if (!device_id) | |
333 | goto blind_set; | |
5bc4418b BW |
334 | iowrite32((u32)(device_id & 0x0f0f), |
335 | &opregion->acpi->didl[i]); | |
3143751f ZR |
336 | i++; |
337 | } | |
338 | } | |
339 | ||
340 | end: | |
341 | /* If fewer than 8 outputs, the list must be null terminated */ | |
342 | if (i < 8) | |
5bc4418b | 343 | iowrite32(0, &opregion->acpi->didl[i]); |
3143751f ZR |
344 | return; |
345 | ||
346 | blind_set: | |
347 | i = 0; | |
74a365b3 MG |
348 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
349 | int output_type = ACPI_OTHER_OUTPUT; | |
350 | if (i >= 8) { | |
0206e353 | 351 | dev_printk(KERN_ERR, &dev->pdev->dev, |
74a365b3 MG |
352 | "More than 8 outputs detected\n"); |
353 | return; | |
354 | } | |
355 | switch (connector->connector_type) { | |
356 | case DRM_MODE_CONNECTOR_VGA: | |
357 | case DRM_MODE_CONNECTOR_DVIA: | |
358 | output_type = ACPI_VGA_OUTPUT; | |
359 | break; | |
360 | case DRM_MODE_CONNECTOR_Composite: | |
361 | case DRM_MODE_CONNECTOR_SVIDEO: | |
362 | case DRM_MODE_CONNECTOR_Component: | |
363 | case DRM_MODE_CONNECTOR_9PinDIN: | |
364 | output_type = ACPI_TV_OUTPUT; | |
365 | break; | |
366 | case DRM_MODE_CONNECTOR_DVII: | |
367 | case DRM_MODE_CONNECTOR_DVID: | |
368 | case DRM_MODE_CONNECTOR_DisplayPort: | |
369 | case DRM_MODE_CONNECTOR_HDMIA: | |
370 | case DRM_MODE_CONNECTOR_HDMIB: | |
371 | output_type = ACPI_DIGITAL_OUTPUT; | |
372 | break; | |
373 | case DRM_MODE_CONNECTOR_LVDS: | |
374 | output_type = ACPI_LVDS_OUTPUT; | |
375 | break; | |
376 | } | |
5bc4418b BW |
377 | temp = ioread32(&opregion->acpi->didl[i]); |
378 | iowrite32(temp | (1<<31) | output_type | i, | |
379 | &opregion->acpi->didl[i]); | |
74a365b3 MG |
380 | i++; |
381 | } | |
3143751f | 382 | goto end; |
74a365b3 MG |
383 | } |
384 | ||
d627b62f L |
385 | static void intel_setup_cadls(struct drm_device *dev) |
386 | { | |
387 | struct drm_i915_private *dev_priv = dev->dev_private; | |
388 | struct intel_opregion *opregion = &dev_priv->opregion; | |
389 | int i = 0; | |
390 | u32 disp_id; | |
391 | ||
392 | /* Initialize the CADL field by duplicating the DIDL values. | |
393 | * Technically, this is not always correct as display outputs may exist, | |
394 | * but not active. This initialization is necessary for some Clevo | |
395 | * laptops that check this field before processing the brightness and | |
396 | * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if | |
397 | * there are less than eight devices. */ | |
398 | do { | |
399 | disp_id = ioread32(&opregion->acpi->didl[i]); | |
400 | iowrite32(disp_id, &opregion->acpi->cadl[i]); | |
401 | } while (++i < 8 && disp_id != 0); | |
402 | } | |
403 | ||
44834a67 CW |
404 | void intel_opregion_init(struct drm_device *dev) |
405 | { | |
406 | struct drm_i915_private *dev_priv = dev->dev_private; | |
407 | struct intel_opregion *opregion = &dev_priv->opregion; | |
408 | ||
409 | if (!opregion->header) | |
410 | return; | |
411 | ||
412 | if (opregion->acpi) { | |
d627b62f | 413 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
44834a67 | 414 | intel_didl_outputs(dev); |
d627b62f L |
415 | intel_setup_cadls(dev); |
416 | } | |
44834a67 CW |
417 | |
418 | /* Notify BIOS we are ready to handle ACPI video ext notifs. | |
419 | * Right now, all the events are handled by the ACPI video module. | |
420 | * We don't actually need to do anything with them. */ | |
5bc4418b BW |
421 | iowrite32(0, &opregion->acpi->csts); |
422 | iowrite32(1, &opregion->acpi->drdy); | |
44834a67 CW |
423 | |
424 | system_opregion = opregion; | |
425 | register_acpi_notifier(&intel_opregion_notifier); | |
426 | } | |
427 | ||
428 | if (opregion->asle) | |
429 | intel_opregion_enable_asle(dev); | |
430 | } | |
431 | ||
432 | void intel_opregion_fini(struct drm_device *dev) | |
433 | { | |
434 | struct drm_i915_private *dev_priv = dev->dev_private; | |
435 | struct intel_opregion *opregion = &dev_priv->opregion; | |
436 | ||
437 | if (!opregion->header) | |
438 | return; | |
439 | ||
440 | if (opregion->acpi) { | |
5bc4418b | 441 | iowrite32(0, &opregion->acpi->drdy); |
44834a67 CW |
442 | |
443 | system_opregion = NULL; | |
444 | unregister_acpi_notifier(&intel_opregion_notifier); | |
445 | } | |
446 | ||
447 | /* just clear all opregion memory pointers now */ | |
448 | iounmap(opregion->header); | |
449 | opregion->header = NULL; | |
450 | opregion->acpi = NULL; | |
451 | opregion->swsci = NULL; | |
452 | opregion->asle = NULL; | |
453 | opregion->vbt = NULL; | |
454 | } | |
455 | #endif | |
456 | ||
457 | int intel_opregion_setup(struct drm_device *dev) | |
8ee1c3db MG |
458 | { |
459 | struct drm_i915_private *dev_priv = dev->dev_private; | |
460 | struct intel_opregion *opregion = &dev_priv->opregion; | |
5bc4418b | 461 | void __iomem *base; |
8ee1c3db | 462 | u32 asls, mboxes; |
5bc4418b | 463 | char buf[sizeof(OPREGION_SIGNATURE)]; |
8ee1c3db MG |
464 | int err = 0; |
465 | ||
466 | pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); | |
44d98a61 | 467 | DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); |
8ee1c3db | 468 | if (asls == 0) { |
44d98a61 | 469 | DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); |
8ee1c3db MG |
470 | return -ENOTSUPP; |
471 | } | |
472 | ||
b705120e | 473 | base = acpi_os_ioremap(asls, OPREGION_SIZE); |
8ee1c3db MG |
474 | if (!base) |
475 | return -ENOMEM; | |
476 | ||
5bc4418b BW |
477 | memcpy_fromio(buf, base, sizeof(buf)); |
478 | ||
479 | if (memcmp(buf, OPREGION_SIGNATURE, 16)) { | |
44d98a61 | 480 | DRM_DEBUG_DRIVER("opregion signature mismatch\n"); |
8ee1c3db MG |
481 | err = -EINVAL; |
482 | goto err_out; | |
483 | } | |
44834a67 CW |
484 | opregion->header = base; |
485 | opregion->vbt = base + OPREGION_VBT_OFFSET; | |
8ee1c3db | 486 | |
82d3c90c | 487 | opregion->lid_state = base + ACPI_CLID; |
01fe9dbd | 488 | |
5bc4418b | 489 | mboxes = ioread32(&opregion->header->mboxes); |
8ee1c3db | 490 | if (mboxes & MBOX_ACPI) { |
44d98a61 | 491 | DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); |
8ee1c3db | 492 | opregion->acpi = base + OPREGION_ACPI_OFFSET; |
8ee1c3db | 493 | } |
8ee1c3db MG |
494 | |
495 | if (mboxes & MBOX_SWSCI) { | |
44d98a61 | 496 | DRM_DEBUG_DRIVER("SWSCI supported\n"); |
8ee1c3db MG |
497 | opregion->swsci = base + OPREGION_SWSCI_OFFSET; |
498 | } | |
499 | if (mboxes & MBOX_ASLE) { | |
44d98a61 | 500 | DRM_DEBUG_DRIVER("ASLE supported\n"); |
8ee1c3db MG |
501 | opregion->asle = base + OPREGION_ASLE_OFFSET; |
502 | } | |
503 | ||
8ee1c3db MG |
504 | return 0; |
505 | ||
506 | err_out: | |
30c56660 | 507 | iounmap(base); |
8ee1c3db MG |
508 | return err; |
509 | } |