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 | ||
68bca4b0 JN |
113 | /* Driver readiness indicator */ |
114 | #define ASLE_ARDY_READY (1 << 0) | |
115 | #define ASLE_ARDY_NOT_READY (0 << 0) | |
116 | ||
8ee1c3db MG |
117 | /* ASLE irq request bits */ |
118 | #define ASLE_SET_ALS_ILLUM (1 << 0) | |
119 | #define ASLE_SET_BACKLIGHT (1 << 1) | |
120 | #define ASLE_SET_PFIT (1 << 2) | |
121 | #define ASLE_SET_PWM_FREQ (1 << 3) | |
122 | #define ASLE_REQ_MSK 0xf | |
123 | ||
124 | /* response bits of ASLE irq request */ | |
01c66889 ZY |
125 | #define ASLE_ALS_ILLUM_FAILED (1<<10) |
126 | #define ASLE_BACKLIGHT_FAILED (1<<12) | |
127 | #define ASLE_PFIT_FAILED (1<<14) | |
128 | #define ASLE_PWM_FREQ_FAILED (1<<16) | |
8ee1c3db | 129 | |
f599cc29 JN |
130 | /* Technology enabled indicator */ |
131 | #define ASLE_TCHE_ALS_EN (1 << 0) | |
132 | #define ASLE_TCHE_BLC_EN (1 << 1) | |
133 | #define ASLE_TCHE_PFIT_EN (1 << 2) | |
134 | #define ASLE_TCHE_PFMB_EN (1 << 3) | |
135 | ||
8ee1c3db MG |
136 | /* ASLE backlight brightness to set */ |
137 | #define ASLE_BCLP_VALID (1<<31) | |
138 | #define ASLE_BCLP_MSK (~(1<<31)) | |
139 | ||
140 | /* ASLE panel fitting request */ | |
141 | #define ASLE_PFIT_VALID (1<<31) | |
142 | #define ASLE_PFIT_CENTER (1<<0) | |
143 | #define ASLE_PFIT_STRETCH_TEXT (1<<1) | |
144 | #define ASLE_PFIT_STRETCH_GFX (1<<2) | |
145 | ||
146 | /* PWM frequency and minimum brightness */ | |
147 | #define ASLE_PFMB_BRIGHTNESS_MASK (0xff) | |
148 | #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8) | |
149 | #define ASLE_PFMB_PWM_MASK (0x7ffffe00) | |
150 | #define ASLE_PFMB_PWM_VALID (1<<31) | |
151 | ||
152 | #define ASLE_CBLV_VALID (1<<31) | |
153 | ||
74a365b3 MG |
154 | #define ACPI_OTHER_OUTPUT (0<<8) |
155 | #define ACPI_VGA_OUTPUT (1<<8) | |
156 | #define ACPI_TV_OUTPUT (2<<8) | |
157 | #define ACPI_DIGITAL_OUTPUT (3<<8) | |
158 | #define ACPI_LVDS_OUTPUT (4<<8) | |
159 | ||
44834a67 | 160 | #ifdef CONFIG_ACPI |
8ee1c3db MG |
161 | static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) |
162 | { | |
163 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5bc4418b | 164 | struct opregion_asle __iomem *asle = dev_priv->opregion.asle; |
8ee1c3db | 165 | |
749052fb JN |
166 | DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); |
167 | ||
8ee1c3db | 168 | if (!(bclp & ASLE_BCLP_VALID)) |
862daefc | 169 | return ASLE_BACKLIGHT_FAILED; |
8ee1c3db MG |
170 | |
171 | bclp &= ASLE_BCLP_MSK; | |
a9573556 | 172 | if (bclp > 255) |
862daefc | 173 | return ASLE_BACKLIGHT_FAILED; |
8ee1c3db | 174 | |
d6540632 | 175 | intel_panel_set_backlight(dev, bclp, 255); |
cac6a5ae | 176 | iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); |
8ee1c3db MG |
177 | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi) | |
182 | { | |
183 | /* alsi is the current ALS reading in lux. 0 indicates below sensor | |
184 | range, 0xffff indicates above sensor range. 1-0xfffe are valid */ | |
e93d440b JN |
185 | DRM_DEBUG_DRIVER("Illum is not supported\n"); |
186 | return ASLE_ALS_ILLUM_FAILED; | |
8ee1c3db MG |
187 | } |
188 | ||
189 | static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb) | |
190 | { | |
e93d440b JN |
191 | DRM_DEBUG_DRIVER("PWM freq is not supported\n"); |
192 | return ASLE_PWM_FREQ_FAILED; | |
8ee1c3db MG |
193 | } |
194 | ||
195 | static u32 asle_set_pfit(struct drm_device *dev, u32 pfit) | |
196 | { | |
197 | /* Panel fitting is currently controlled by the X code, so this is a | |
198 | noop until modesetting support works fully */ | |
e93d440b JN |
199 | DRM_DEBUG_DRIVER("Pfit is not supported\n"); |
200 | return ASLE_PFIT_FAILED; | |
8ee1c3db MG |
201 | } |
202 | ||
3b617967 | 203 | void intel_opregion_asle_intr(struct drm_device *dev) |
8ee1c3db MG |
204 | { |
205 | struct drm_i915_private *dev_priv = dev->dev_private; | |
5bc4418b | 206 | struct opregion_asle __iomem *asle = dev_priv->opregion.asle; |
8ee1c3db MG |
207 | u32 asle_stat = 0; |
208 | u32 asle_req; | |
209 | ||
210 | if (!asle) | |
211 | return; | |
212 | ||
5bc4418b | 213 | asle_req = ioread32(&asle->aslc) & ASLE_REQ_MSK; |
8ee1c3db MG |
214 | |
215 | if (!asle_req) { | |
44d98a61 | 216 | DRM_DEBUG_DRIVER("non asle set request??\n"); |
8ee1c3db MG |
217 | return; |
218 | } | |
219 | ||
220 | if (asle_req & ASLE_SET_ALS_ILLUM) | |
5bc4418b | 221 | asle_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi)); |
8ee1c3db MG |
222 | |
223 | if (asle_req & ASLE_SET_BACKLIGHT) | |
5bc4418b | 224 | asle_stat |= asle_set_backlight(dev, ioread32(&asle->bclp)); |
8ee1c3db MG |
225 | |
226 | if (asle_req & ASLE_SET_PFIT) | |
5bc4418b | 227 | asle_stat |= asle_set_pfit(dev, ioread32(&asle->pfit)); |
8ee1c3db MG |
228 | |
229 | if (asle_req & ASLE_SET_PWM_FREQ) | |
5bc4418b | 230 | asle_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb)); |
8ee1c3db | 231 | |
5bc4418b | 232 | iowrite32(asle_stat, &asle->aslc); |
8ee1c3db MG |
233 | } |
234 | ||
8ee1c3db MG |
235 | #define ACPI_EV_DISPLAY_SWITCH (1<<0) |
236 | #define ACPI_EV_LID (1<<1) | |
237 | #define ACPI_EV_DOCK (1<<2) | |
238 | ||
239 | static struct intel_opregion *system_opregion; | |
240 | ||
b358d0a6 HE |
241 | static int intel_opregion_video_event(struct notifier_block *nb, |
242 | unsigned long val, void *data) | |
8ee1c3db MG |
243 | { |
244 | /* The only video events relevant to opregion are 0x80. These indicate | |
245 | either a docking event, lid switch or display switch request. In | |
246 | Linux, these are handled by the dock, button and video drivers. | |
f5a3d0c4 | 247 | */ |
8ee1c3db | 248 | |
5bc4418b | 249 | struct opregion_acpi __iomem *acpi; |
f5a3d0c4 MG |
250 | struct acpi_bus_event *event = data; |
251 | int ret = NOTIFY_OK; | |
252 | ||
253 | if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) | |
254 | return NOTIFY_DONE; | |
8ee1c3db MG |
255 | |
256 | if (!system_opregion) | |
257 | return NOTIFY_DONE; | |
258 | ||
259 | acpi = system_opregion->acpi; | |
f5a3d0c4 | 260 | |
5bc4418b BW |
261 | if (event->type == 0x80 && |
262 | (ioread32(&acpi->cevt) & 1) == 0) | |
f5a3d0c4 MG |
263 | ret = NOTIFY_BAD; |
264 | ||
5bc4418b | 265 | iowrite32(0, &acpi->csts); |
8ee1c3db | 266 | |
f5a3d0c4 | 267 | return ret; |
8ee1c3db MG |
268 | } |
269 | ||
270 | static struct notifier_block intel_opregion_notifier = { | |
271 | .notifier_call = intel_opregion_video_event, | |
272 | }; | |
273 | ||
74a365b3 MG |
274 | /* |
275 | * Initialise the DIDL field in opregion. This passes a list of devices to | |
276 | * the firmware. Values are defined by section B.4.2 of the ACPI specification | |
277 | * (version 3) | |
278 | */ | |
279 | ||
280 | static void intel_didl_outputs(struct drm_device *dev) | |
281 | { | |
282 | struct drm_i915_private *dev_priv = dev->dev_private; | |
283 | struct intel_opregion *opregion = &dev_priv->opregion; | |
284 | struct drm_connector *connector; | |
3143751f ZR |
285 | acpi_handle handle; |
286 | struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL; | |
287 | unsigned long long device_id; | |
288 | acpi_status status; | |
5bc4418b | 289 | u32 temp; |
74a365b3 MG |
290 | int i = 0; |
291 | ||
3143751f | 292 | handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev); |
7d37beaa | 293 | if (!handle || acpi_bus_get_device(handle, &acpi_dev)) |
3143751f ZR |
294 | return; |
295 | ||
d4e1a692 | 296 | if (acpi_is_video_device(handle)) |
3143751f ZR |
297 | acpi_video_bus = acpi_dev; |
298 | else { | |
299 | list_for_each_entry(acpi_cdev, &acpi_dev->children, node) { | |
d4e1a692 | 300 | if (acpi_is_video_device(acpi_cdev->handle)) { |
3143751f ZR |
301 | acpi_video_bus = acpi_cdev; |
302 | break; | |
303 | } | |
304 | } | |
305 | } | |
306 | ||
307 | if (!acpi_video_bus) { | |
a70491cc | 308 | pr_warn("No ACPI video bus found\n"); |
3143751f ZR |
309 | return; |
310 | } | |
311 | ||
312 | list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) { | |
313 | if (i >= 8) { | |
0f4f7b57 DV |
314 | dev_dbg(&dev->pdev->dev, |
315 | "More than 8 outputs detected via ACPI\n"); | |
3143751f ZR |
316 | return; |
317 | } | |
318 | status = | |
319 | acpi_evaluate_integer(acpi_cdev->handle, "_ADR", | |
320 | NULL, &device_id); | |
321 | if (ACPI_SUCCESS(status)) { | |
322 | if (!device_id) | |
323 | goto blind_set; | |
5bc4418b BW |
324 | iowrite32((u32)(device_id & 0x0f0f), |
325 | &opregion->acpi->didl[i]); | |
3143751f ZR |
326 | i++; |
327 | } | |
328 | } | |
329 | ||
330 | end: | |
331 | /* If fewer than 8 outputs, the list must be null terminated */ | |
332 | if (i < 8) | |
5bc4418b | 333 | iowrite32(0, &opregion->acpi->didl[i]); |
3143751f ZR |
334 | return; |
335 | ||
336 | blind_set: | |
337 | i = 0; | |
74a365b3 MG |
338 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
339 | int output_type = ACPI_OTHER_OUTPUT; | |
340 | if (i >= 8) { | |
0f4f7b57 DV |
341 | dev_dbg(&dev->pdev->dev, |
342 | "More than 8 outputs in connector list\n"); | |
74a365b3 MG |
343 | return; |
344 | } | |
345 | switch (connector->connector_type) { | |
346 | case DRM_MODE_CONNECTOR_VGA: | |
347 | case DRM_MODE_CONNECTOR_DVIA: | |
348 | output_type = ACPI_VGA_OUTPUT; | |
349 | break; | |
350 | case DRM_MODE_CONNECTOR_Composite: | |
351 | case DRM_MODE_CONNECTOR_SVIDEO: | |
352 | case DRM_MODE_CONNECTOR_Component: | |
353 | case DRM_MODE_CONNECTOR_9PinDIN: | |
354 | output_type = ACPI_TV_OUTPUT; | |
355 | break; | |
356 | case DRM_MODE_CONNECTOR_DVII: | |
357 | case DRM_MODE_CONNECTOR_DVID: | |
358 | case DRM_MODE_CONNECTOR_DisplayPort: | |
359 | case DRM_MODE_CONNECTOR_HDMIA: | |
360 | case DRM_MODE_CONNECTOR_HDMIB: | |
361 | output_type = ACPI_DIGITAL_OUTPUT; | |
362 | break; | |
363 | case DRM_MODE_CONNECTOR_LVDS: | |
364 | output_type = ACPI_LVDS_OUTPUT; | |
365 | break; | |
366 | } | |
5bc4418b BW |
367 | temp = ioread32(&opregion->acpi->didl[i]); |
368 | iowrite32(temp | (1<<31) | output_type | i, | |
369 | &opregion->acpi->didl[i]); | |
74a365b3 MG |
370 | i++; |
371 | } | |
3143751f | 372 | goto end; |
74a365b3 MG |
373 | } |
374 | ||
d627b62f L |
375 | static void intel_setup_cadls(struct drm_device *dev) |
376 | { | |
377 | struct drm_i915_private *dev_priv = dev->dev_private; | |
378 | struct intel_opregion *opregion = &dev_priv->opregion; | |
379 | int i = 0; | |
380 | u32 disp_id; | |
381 | ||
382 | /* Initialize the CADL field by duplicating the DIDL values. | |
383 | * Technically, this is not always correct as display outputs may exist, | |
384 | * but not active. This initialization is necessary for some Clevo | |
385 | * laptops that check this field before processing the brightness and | |
386 | * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if | |
387 | * there are less than eight devices. */ | |
388 | do { | |
389 | disp_id = ioread32(&opregion->acpi->didl[i]); | |
390 | iowrite32(disp_id, &opregion->acpi->cadl[i]); | |
391 | } while (++i < 8 && disp_id != 0); | |
392 | } | |
393 | ||
44834a67 CW |
394 | void intel_opregion_init(struct drm_device *dev) |
395 | { | |
396 | struct drm_i915_private *dev_priv = dev->dev_private; | |
397 | struct intel_opregion *opregion = &dev_priv->opregion; | |
398 | ||
399 | if (!opregion->header) | |
400 | return; | |
401 | ||
402 | if (opregion->acpi) { | |
d627b62f | 403 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
44834a67 | 404 | intel_didl_outputs(dev); |
d627b62f L |
405 | intel_setup_cadls(dev); |
406 | } | |
44834a67 CW |
407 | |
408 | /* Notify BIOS we are ready to handle ACPI video ext notifs. | |
409 | * Right now, all the events are handled by the ACPI video module. | |
410 | * We don't actually need to do anything with them. */ | |
5bc4418b BW |
411 | iowrite32(0, &opregion->acpi->csts); |
412 | iowrite32(1, &opregion->acpi->drdy); | |
44834a67 CW |
413 | |
414 | system_opregion = opregion; | |
415 | register_acpi_notifier(&intel_opregion_notifier); | |
416 | } | |
417 | ||
68bca4b0 | 418 | if (opregion->asle) { |
68bca4b0 JN |
419 | iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche); |
420 | iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy); | |
421 | } | |
44834a67 CW |
422 | } |
423 | ||
424 | void intel_opregion_fini(struct drm_device *dev) | |
425 | { | |
426 | struct drm_i915_private *dev_priv = dev->dev_private; | |
427 | struct intel_opregion *opregion = &dev_priv->opregion; | |
428 | ||
429 | if (!opregion->header) | |
430 | return; | |
431 | ||
68bca4b0 JN |
432 | if (opregion->asle) |
433 | iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); | |
434 | ||
44834a67 | 435 | if (opregion->acpi) { |
5bc4418b | 436 | iowrite32(0, &opregion->acpi->drdy); |
44834a67 CW |
437 | |
438 | system_opregion = NULL; | |
439 | unregister_acpi_notifier(&intel_opregion_notifier); | |
440 | } | |
441 | ||
442 | /* just clear all opregion memory pointers now */ | |
443 | iounmap(opregion->header); | |
444 | opregion->header = NULL; | |
445 | opregion->acpi = NULL; | |
446 | opregion->swsci = NULL; | |
447 | opregion->asle = NULL; | |
448 | opregion->vbt = NULL; | |
449 | } | |
450 | #endif | |
451 | ||
452 | int intel_opregion_setup(struct drm_device *dev) | |
8ee1c3db MG |
453 | { |
454 | struct drm_i915_private *dev_priv = dev->dev_private; | |
455 | struct intel_opregion *opregion = &dev_priv->opregion; | |
5bc4418b | 456 | void __iomem *base; |
8ee1c3db | 457 | u32 asls, mboxes; |
5bc4418b | 458 | char buf[sizeof(OPREGION_SIGNATURE)]; |
8ee1c3db MG |
459 | int err = 0; |
460 | ||
461 | pci_read_config_dword(dev->pdev, PCI_ASLS, &asls); | |
44d98a61 | 462 | DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls); |
8ee1c3db | 463 | if (asls == 0) { |
44d98a61 | 464 | DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n"); |
8ee1c3db MG |
465 | return -ENOTSUPP; |
466 | } | |
467 | ||
b705120e | 468 | base = acpi_os_ioremap(asls, OPREGION_SIZE); |
8ee1c3db MG |
469 | if (!base) |
470 | return -ENOMEM; | |
471 | ||
5bc4418b BW |
472 | memcpy_fromio(buf, base, sizeof(buf)); |
473 | ||
474 | if (memcmp(buf, OPREGION_SIGNATURE, 16)) { | |
44d98a61 | 475 | DRM_DEBUG_DRIVER("opregion signature mismatch\n"); |
8ee1c3db MG |
476 | err = -EINVAL; |
477 | goto err_out; | |
478 | } | |
44834a67 CW |
479 | opregion->header = base; |
480 | opregion->vbt = base + OPREGION_VBT_OFFSET; | |
8ee1c3db | 481 | |
82d3c90c | 482 | opregion->lid_state = base + ACPI_CLID; |
01fe9dbd | 483 | |
5bc4418b | 484 | mboxes = ioread32(&opregion->header->mboxes); |
8ee1c3db | 485 | if (mboxes & MBOX_ACPI) { |
44d98a61 | 486 | DRM_DEBUG_DRIVER("Public ACPI methods supported\n"); |
8ee1c3db | 487 | opregion->acpi = base + OPREGION_ACPI_OFFSET; |
8ee1c3db | 488 | } |
8ee1c3db MG |
489 | |
490 | if (mboxes & MBOX_SWSCI) { | |
44d98a61 | 491 | DRM_DEBUG_DRIVER("SWSCI supported\n"); |
8ee1c3db MG |
492 | opregion->swsci = base + OPREGION_SWSCI_OFFSET; |
493 | } | |
494 | if (mboxes & MBOX_ASLE) { | |
44d98a61 | 495 | DRM_DEBUG_DRIVER("ASLE supported\n"); |
8ee1c3db | 496 | opregion->asle = base + OPREGION_ASLE_OFFSET; |
68bca4b0 JN |
497 | |
498 | iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy); | |
8ee1c3db MG |
499 | } |
500 | ||
8ee1c3db MG |
501 | return 0; |
502 | ||
503 | err_out: | |
30c56660 | 504 | iounmap(base); |
8ee1c3db MG |
505 | return err; |
506 | } |