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drm/i915/opregion: Convert to using native drm_i915_private
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_opregion.c
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 <acpi/video.h>
31
32 #include <drm/drmP.h>
33 #include <drm/i915_drm.h>
34 #include "i915_drv.h"
35 #include "intel_drv.h"
36
37 #define OPREGION_HEADER_OFFSET 0
38 #define OPREGION_ACPI_OFFSET 0x100
39 #define ACPI_CLID 0x01ac /* current lid state indicator */
40 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
41 #define OPREGION_SWSCI_OFFSET 0x200
42 #define OPREGION_ASLE_OFFSET 0x300
43 #define OPREGION_VBT_OFFSET 0x400
44 #define OPREGION_ASLE_EXT_OFFSET 0x1C00
45
46 #define OPREGION_SIGNATURE "IntelGraphicsMem"
47 #define MBOX_ACPI (1<<0)
48 #define MBOX_SWSCI (1<<1)
49 #define MBOX_ASLE (1<<2)
50 #define MBOX_ASLE_EXT (1<<4)
51
52 struct opregion_header {
53 u8 signature[16];
54 u32 size;
55 u32 opregion_ver;
56 u8 bios_ver[32];
57 u8 vbios_ver[16];
58 u8 driver_ver[16];
59 u32 mboxes;
60 u32 driver_model;
61 u32 pcon;
62 u8 dver[32];
63 u8 rsvd[124];
64 } __packed;
65
66 /* OpRegion mailbox #1: public ACPI methods */
67 struct opregion_acpi {
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 u32 did2[7]; /* extended supported display devices ID list */
86 u32 cpd2[7]; /* extended attached display devices list */
87 u8 rsvd2[4];
88 } __packed;
89
90 /* OpRegion mailbox #2: SWSCI */
91 struct opregion_swsci {
92 u32 scic; /* SWSCI command|status|data */
93 u32 parm; /* command parameters */
94 u32 dslp; /* driver sleep time-out */
95 u8 rsvd[244];
96 } __packed;
97
98 /* OpRegion mailbox #3: ASLE */
99 struct opregion_asle {
100 u32 ardy; /* driver readiness */
101 u32 aslc; /* ASLE interrupt command */
102 u32 tche; /* technology enabled indicator */
103 u32 alsi; /* current ALS illuminance reading */
104 u32 bclp; /* backlight brightness to set */
105 u32 pfit; /* panel fitting state */
106 u32 cblv; /* current brightness level */
107 u16 bclm[20]; /* backlight level duty cycle mapping table */
108 u32 cpfm; /* current panel fitting mode */
109 u32 epfm; /* enabled panel fitting modes */
110 u8 plut[74]; /* panel LUT and identifier */
111 u32 pfmb; /* PWM freq and min brightness */
112 u32 cddv; /* color correction default values */
113 u32 pcft; /* power conservation features */
114 u32 srot; /* supported rotation angles */
115 u32 iuer; /* IUER events */
116 u64 fdss;
117 u32 fdsp;
118 u32 stat;
119 u64 rvda; /* Physical address of raw vbt data */
120 u32 rvds; /* Size of raw vbt data */
121 u8 rsvd[58];
122 } __packed;
123
124 /* OpRegion mailbox #5: ASLE ext */
125 struct opregion_asle_ext {
126 u32 phed; /* Panel Header */
127 u8 bddc[256]; /* Panel EDID */
128 u8 rsvd[764];
129 } __packed;
130
131 /* Driver readiness indicator */
132 #define ASLE_ARDY_READY (1 << 0)
133 #define ASLE_ARDY_NOT_READY (0 << 0)
134
135 /* ASLE Interrupt Command (ASLC) bits */
136 #define ASLC_SET_ALS_ILLUM (1 << 0)
137 #define ASLC_SET_BACKLIGHT (1 << 1)
138 #define ASLC_SET_PFIT (1 << 2)
139 #define ASLC_SET_PWM_FREQ (1 << 3)
140 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
141 #define ASLC_BUTTON_ARRAY (1 << 5)
142 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
143 #define ASLC_DOCKING_INDICATOR (1 << 7)
144 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
145 #define ASLC_REQ_MSK 0x1ff
146 /* response bits */
147 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
148 #define ASLC_BACKLIGHT_FAILED (1 << 12)
149 #define ASLC_PFIT_FAILED (1 << 14)
150 #define ASLC_PWM_FREQ_FAILED (1 << 16)
151 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
152 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
153 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
154 #define ASLC_DOCKING_FAILED (1 << 24)
155 #define ASLC_ISCT_STATE_FAILED (1 << 26)
156
157 /* Technology enabled indicator */
158 #define ASLE_TCHE_ALS_EN (1 << 0)
159 #define ASLE_TCHE_BLC_EN (1 << 1)
160 #define ASLE_TCHE_PFIT_EN (1 << 2)
161 #define ASLE_TCHE_PFMB_EN (1 << 3)
162
163 /* ASLE backlight brightness to set */
164 #define ASLE_BCLP_VALID (1<<31)
165 #define ASLE_BCLP_MSK (~(1<<31))
166
167 /* ASLE panel fitting request */
168 #define ASLE_PFIT_VALID (1<<31)
169 #define ASLE_PFIT_CENTER (1<<0)
170 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
171 #define ASLE_PFIT_STRETCH_GFX (1<<2)
172
173 /* PWM frequency and minimum brightness */
174 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
175 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
176 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
177 #define ASLE_PFMB_PWM_VALID (1<<31)
178
179 #define ASLE_CBLV_VALID (1<<31)
180
181 /* IUER */
182 #define ASLE_IUER_DOCKING (1 << 7)
183 #define ASLE_IUER_CONVERTIBLE (1 << 6)
184 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
185 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
186 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
187 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
188 #define ASLE_IUER_POWER_BTN (1 << 0)
189
190 /* Software System Control Interrupt (SWSCI) */
191 #define SWSCI_SCIC_INDICATOR (1 << 0)
192 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
193 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
194 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
195 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
196 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
197 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
198 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
199 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
200 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
201
202 #define SWSCI_FUNCTION_CODE(main, sub) \
203 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
204 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
205
206 /* SWSCI: Get BIOS Data (GBDA) */
207 #define SWSCI_GBDA 4
208 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
209 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
210 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
211 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
212 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
213 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
214 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
215
216 /* SWSCI: System BIOS Callbacks (SBCB) */
217 #define SWSCI_SBCB 6
218 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
219 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
220 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
221 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
222 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
223 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
224 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
225 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
226 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
227 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
228 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
229 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
230 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
231 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
232 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
233 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
234
235 #define ACPI_OTHER_OUTPUT (0<<8)
236 #define ACPI_VGA_OUTPUT (1<<8)
237 #define ACPI_TV_OUTPUT (2<<8)
238 #define ACPI_DIGITAL_OUTPUT (3<<8)
239 #define ACPI_LVDS_OUTPUT (4<<8)
240
241 #define MAX_DSLP 1500
242
243 static int swsci(struct drm_i915_private *dev_priv,
244 u32 function, u32 parm, u32 *parm_out)
245 {
246 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
247 struct pci_dev *pdev = dev_priv->dev->pdev;
248 u32 main_function, sub_function, scic;
249 u16 swsci_val;
250 u32 dslp;
251
252 if (!swsci)
253 return -ENODEV;
254
255 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
256 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
257 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
258 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
259
260 /* Check if we can call the function. See swsci_setup for details. */
261 if (main_function == SWSCI_SBCB) {
262 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
263 (1 << sub_function)) == 0)
264 return -EINVAL;
265 } else if (main_function == SWSCI_GBDA) {
266 if ((dev_priv->opregion.swsci_gbda_sub_functions &
267 (1 << sub_function)) == 0)
268 return -EINVAL;
269 }
270
271 /* Driver sleep timeout in ms. */
272 dslp = swsci->dslp;
273 if (!dslp) {
274 /* The spec says 2ms should be the default, but it's too small
275 * for some machines. */
276 dslp = 50;
277 } else if (dslp > MAX_DSLP) {
278 /* Hey bios, trust must be earned. */
279 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
280 "using %u ms instead\n", dslp, MAX_DSLP);
281 dslp = MAX_DSLP;
282 }
283
284 /* The spec tells us to do this, but we are the only user... */
285 scic = swsci->scic;
286 if (scic & SWSCI_SCIC_INDICATOR) {
287 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
288 return -EBUSY;
289 }
290
291 scic = function | SWSCI_SCIC_INDICATOR;
292
293 swsci->parm = parm;
294 swsci->scic = scic;
295
296 /* Ensure SCI event is selected and event trigger is cleared. */
297 pci_read_config_word(pdev, SWSCI, &swsci_val);
298 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
299 swsci_val |= SWSCI_SCISEL;
300 swsci_val &= ~SWSCI_GSSCIE;
301 pci_write_config_word(pdev, SWSCI, swsci_val);
302 }
303
304 /* Use event trigger to tell bios to check the mail. */
305 swsci_val |= SWSCI_GSSCIE;
306 pci_write_config_word(pdev, SWSCI, swsci_val);
307
308 /* Poll for the result. */
309 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
310 if (wait_for(C, dslp)) {
311 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
312 return -ETIMEDOUT;
313 }
314
315 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
316 SWSCI_SCIC_EXIT_STATUS_SHIFT;
317
318 /* Note: scic == 0 is an error! */
319 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
320 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
321 return -EIO;
322 }
323
324 if (parm_out)
325 *parm_out = swsci->parm;
326
327 return 0;
328
329 #undef C
330 }
331
332 #define DISPLAY_TYPE_CRT 0
333 #define DISPLAY_TYPE_TV 1
334 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
335 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
336
337 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
338 bool enable)
339 {
340 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
341 u32 parm = 0;
342 u32 type = 0;
343 u32 port;
344
345 /* don't care about old stuff for now */
346 if (!HAS_DDI(dev_priv))
347 return 0;
348
349 if (intel_encoder->type == INTEL_OUTPUT_DSI)
350 port = 0;
351 else
352 port = intel_ddi_get_encoder_port(intel_encoder);
353
354 if (port == PORT_E) {
355 port = 0;
356 } else {
357 parm |= 1 << port;
358 port++;
359 }
360
361 if (!enable)
362 parm |= 4 << 8;
363
364 switch (intel_encoder->type) {
365 case INTEL_OUTPUT_ANALOG:
366 type = DISPLAY_TYPE_CRT;
367 break;
368 case INTEL_OUTPUT_UNKNOWN:
369 case INTEL_OUTPUT_DISPLAYPORT:
370 case INTEL_OUTPUT_HDMI:
371 case INTEL_OUTPUT_DP_MST:
372 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
373 break;
374 case INTEL_OUTPUT_EDP:
375 case INTEL_OUTPUT_DSI:
376 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
377 break;
378 default:
379 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
380 intel_encoder->type);
381 return -EINVAL;
382 }
383
384 parm |= type << (16 + port * 3);
385
386 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
387 }
388
389 static const struct {
390 pci_power_t pci_power_state;
391 u32 parm;
392 } power_state_map[] = {
393 { PCI_D0, 0x00 },
394 { PCI_D1, 0x01 },
395 { PCI_D2, 0x02 },
396 { PCI_D3hot, 0x04 },
397 { PCI_D3cold, 0x04 },
398 };
399
400 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
401 pci_power_t state)
402 {
403 int i;
404
405 if (!HAS_DDI(dev_priv))
406 return 0;
407
408 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
409 if (state == power_state_map[i].pci_power_state)
410 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
411 power_state_map[i].parm, NULL);
412 }
413
414 return -EINVAL;
415 }
416
417 static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
418 {
419 struct intel_connector *connector;
420 struct opregion_asle *asle = dev_priv->opregion.asle;
421 struct drm_device *dev = dev_priv->dev;
422
423 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
424
425 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
426 DRM_DEBUG_KMS("opregion backlight request ignored\n");
427 return 0;
428 }
429
430 if (!(bclp & ASLE_BCLP_VALID))
431 return ASLC_BACKLIGHT_FAILED;
432
433 bclp &= ASLE_BCLP_MSK;
434 if (bclp > 255)
435 return ASLC_BACKLIGHT_FAILED;
436
437 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
438
439 /*
440 * Update backlight on all connectors that support backlight (usually
441 * only one).
442 */
443 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
444 for_each_intel_connector(dev, connector)
445 intel_panel_set_backlight_acpi(connector, bclp, 255);
446 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
447
448 drm_modeset_unlock(&dev->mode_config.connection_mutex);
449
450
451 return 0;
452 }
453
454 static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
455 {
456 /* alsi is the current ALS reading in lux. 0 indicates below sensor
457 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
458 DRM_DEBUG_DRIVER("Illum is not supported\n");
459 return ASLC_ALS_ILLUM_FAILED;
460 }
461
462 static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
463 {
464 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
465 return ASLC_PWM_FREQ_FAILED;
466 }
467
468 static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
469 {
470 /* Panel fitting is currently controlled by the X code, so this is a
471 noop until modesetting support works fully */
472 DRM_DEBUG_DRIVER("Pfit is not supported\n");
473 return ASLC_PFIT_FAILED;
474 }
475
476 static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
477 {
478 DRM_DEBUG_DRIVER("SROT is not supported\n");
479 return ASLC_ROTATION_ANGLES_FAILED;
480 }
481
482 static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
483 {
484 if (!iuer)
485 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
486 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
487 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
488 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
489 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
490 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
491 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
492 if (iuer & ASLE_IUER_WINDOWS_BTN)
493 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
494 if (iuer & ASLE_IUER_POWER_BTN)
495 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
496
497 return ASLC_BUTTON_ARRAY_FAILED;
498 }
499
500 static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
501 {
502 if (iuer & ASLE_IUER_CONVERTIBLE)
503 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
504 else
505 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
506
507 return ASLC_CONVERTIBLE_FAILED;
508 }
509
510 static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
511 {
512 if (iuer & ASLE_IUER_DOCKING)
513 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
514 else
515 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
516
517 return ASLC_DOCKING_FAILED;
518 }
519
520 static u32 asle_isct_state(struct drm_i915_private *dev_priv)
521 {
522 DRM_DEBUG_DRIVER("ISCT is not supported\n");
523 return ASLC_ISCT_STATE_FAILED;
524 }
525
526 static void asle_work(struct work_struct *work)
527 {
528 struct intel_opregion *opregion =
529 container_of(work, struct intel_opregion, asle_work);
530 struct drm_i915_private *dev_priv =
531 container_of(opregion, struct drm_i915_private, opregion);
532 struct opregion_asle *asle = dev_priv->opregion.asle;
533 u32 aslc_stat = 0;
534 u32 aslc_req;
535
536 if (!asle)
537 return;
538
539 aslc_req = asle->aslc;
540
541 if (!(aslc_req & ASLC_REQ_MSK)) {
542 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
543 aslc_req);
544 return;
545 }
546
547 if (aslc_req & ASLC_SET_ALS_ILLUM)
548 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
549
550 if (aslc_req & ASLC_SET_BACKLIGHT)
551 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
552
553 if (aslc_req & ASLC_SET_PFIT)
554 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
555
556 if (aslc_req & ASLC_SET_PWM_FREQ)
557 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
558
559 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
560 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
561 asle->srot);
562
563 if (aslc_req & ASLC_BUTTON_ARRAY)
564 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
565
566 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
567 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
568
569 if (aslc_req & ASLC_DOCKING_INDICATOR)
570 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
571
572 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
573 aslc_stat |= asle_isct_state(dev_priv);
574
575 asle->aslc = aslc_stat;
576 }
577
578 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
579 {
580 if (dev_priv->opregion.asle)
581 schedule_work(&dev_priv->opregion.asle_work);
582 }
583
584 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
585 #define ACPI_EV_LID (1<<1)
586 #define ACPI_EV_DOCK (1<<2)
587
588 static struct intel_opregion *system_opregion;
589
590 static int intel_opregion_video_event(struct notifier_block *nb,
591 unsigned long val, void *data)
592 {
593 /* The only video events relevant to opregion are 0x80. These indicate
594 either a docking event, lid switch or display switch request. In
595 Linux, these are handled by the dock, button and video drivers.
596 */
597
598 struct acpi_bus_event *event = data;
599 struct opregion_acpi *acpi;
600 int ret = NOTIFY_OK;
601
602 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
603 return NOTIFY_DONE;
604
605 if (!system_opregion)
606 return NOTIFY_DONE;
607
608 acpi = system_opregion->acpi;
609
610 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
611 ret = NOTIFY_BAD;
612
613 acpi->csts = 0;
614
615 return ret;
616 }
617
618 static struct notifier_block intel_opregion_notifier = {
619 .notifier_call = intel_opregion_video_event,
620 };
621
622 /*
623 * Initialise the DIDL field in opregion. This passes a list of devices to
624 * the firmware. Values are defined by section B.4.2 of the ACPI specification
625 * (version 3)
626 */
627
628 static u32 get_did(struct intel_opregion *opregion, int i)
629 {
630 u32 did;
631
632 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
633 did = opregion->acpi->didl[i];
634 } else {
635 i -= ARRAY_SIZE(opregion->acpi->didl);
636
637 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
638 return 0;
639
640 did = opregion->acpi->did2[i];
641 }
642
643 return did;
644 }
645
646 static void set_did(struct intel_opregion *opregion, int i, u32 val)
647 {
648 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
649 opregion->acpi->didl[i] = val;
650 } else {
651 i -= ARRAY_SIZE(opregion->acpi->didl);
652
653 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
654 return;
655
656 opregion->acpi->did2[i] = val;
657 }
658 }
659
660 static void intel_didl_outputs(struct drm_i915_private *dev_priv)
661 {
662 struct intel_opregion *opregion = &dev_priv->opregion;
663 struct pci_dev *pdev = dev_priv->dev->pdev;
664 struct drm_connector *connector;
665 acpi_handle handle;
666 struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
667 unsigned long long device_id;
668 acpi_status status;
669 u32 temp, max_outputs;
670 int i = 0;
671
672 handle = ACPI_HANDLE(&pdev->dev);
673 if (!handle || acpi_bus_get_device(handle, &acpi_dev))
674 return;
675
676 if (acpi_is_video_device(handle))
677 acpi_video_bus = acpi_dev;
678 else {
679 list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
680 if (acpi_is_video_device(acpi_cdev->handle)) {
681 acpi_video_bus = acpi_cdev;
682 break;
683 }
684 }
685 }
686
687 if (!acpi_video_bus) {
688 DRM_DEBUG_KMS("No ACPI video bus found\n");
689 return;
690 }
691
692 /*
693 * In theory, did2, the extended didl, gets added at opregion version
694 * 3.0. In practice, however, we're supposed to set it for earlier
695 * versions as well, since a BIOS that doesn't understand did2 should
696 * not look at it anyway. Use a variable so we can tweak this if a need
697 * arises later.
698 */
699 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
700 ARRAY_SIZE(opregion->acpi->did2);
701
702 list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
703 if (i >= max_outputs) {
704 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
705 max_outputs);
706 return;
707 }
708 status = acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
709 NULL, &device_id);
710 if (ACPI_SUCCESS(status)) {
711 if (!device_id)
712 goto blind_set;
713 set_did(opregion, i++, (u32)(device_id & 0x0f0f));
714 }
715 }
716
717 end:
718 DRM_DEBUG_KMS("%d outputs detected\n", i);
719
720 /* If fewer than max outputs, the list must be null terminated */
721 if (i < max_outputs)
722 set_did(opregion, i, 0);
723 return;
724
725 blind_set:
726 i = 0;
727 list_for_each_entry(connector, &dev_priv->dev->mode_config.connector_list, head) {
728 int output_type = ACPI_OTHER_OUTPUT;
729 if (i >= max_outputs) {
730 DRM_DEBUG_KMS("More than %u outputs in connector list\n",
731 max_outputs);
732 return;
733 }
734 switch (connector->connector_type) {
735 case DRM_MODE_CONNECTOR_VGA:
736 case DRM_MODE_CONNECTOR_DVIA:
737 output_type = ACPI_VGA_OUTPUT;
738 break;
739 case DRM_MODE_CONNECTOR_Composite:
740 case DRM_MODE_CONNECTOR_SVIDEO:
741 case DRM_MODE_CONNECTOR_Component:
742 case DRM_MODE_CONNECTOR_9PinDIN:
743 output_type = ACPI_TV_OUTPUT;
744 break;
745 case DRM_MODE_CONNECTOR_DVII:
746 case DRM_MODE_CONNECTOR_DVID:
747 case DRM_MODE_CONNECTOR_DisplayPort:
748 case DRM_MODE_CONNECTOR_HDMIA:
749 case DRM_MODE_CONNECTOR_HDMIB:
750 output_type = ACPI_DIGITAL_OUTPUT;
751 break;
752 case DRM_MODE_CONNECTOR_LVDS:
753 output_type = ACPI_LVDS_OUTPUT;
754 break;
755 }
756 temp = get_did(opregion, i);
757 set_did(opregion, i, temp | (1 << 31) | output_type | i);
758 i++;
759 }
760 goto end;
761 }
762
763 static void intel_setup_cadls(struct drm_i915_private *dev_priv)
764 {
765 struct intel_opregion *opregion = &dev_priv->opregion;
766 int i = 0;
767 u32 disp_id;
768
769 /* Initialize the CADL field by duplicating the DIDL values.
770 * Technically, this is not always correct as display outputs may exist,
771 * but not active. This initialization is necessary for some Clevo
772 * laptops that check this field before processing the brightness and
773 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
774 * there are less than eight devices. */
775 do {
776 disp_id = get_did(opregion, i);
777 opregion->acpi->cadl[i] = disp_id;
778 } while (++i < 8 && disp_id != 0);
779 }
780
781 void intel_opregion_init(struct drm_i915_private *dev_priv)
782 {
783 struct intel_opregion *opregion = &dev_priv->opregion;
784
785 if (!opregion->header)
786 return;
787
788 if (opregion->acpi) {
789 intel_didl_outputs(dev_priv);
790 intel_setup_cadls(dev_priv);
791
792 /* Notify BIOS we are ready to handle ACPI video ext notifs.
793 * Right now, all the events are handled by the ACPI video module.
794 * We don't actually need to do anything with them. */
795 opregion->acpi->csts = 0;
796 opregion->acpi->drdy = 1;
797
798 system_opregion = opregion;
799 register_acpi_notifier(&intel_opregion_notifier);
800 }
801
802 if (opregion->asle) {
803 opregion->asle->tche = ASLE_TCHE_BLC_EN;
804 opregion->asle->ardy = ASLE_ARDY_READY;
805 }
806 }
807
808 void intel_opregion_fini(struct drm_i915_private *dev_priv)
809 {
810 struct intel_opregion *opregion = &dev_priv->opregion;
811
812 if (!opregion->header)
813 return;
814
815 if (opregion->asle)
816 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
817
818 cancel_work_sync(&dev_priv->opregion.asle_work);
819
820 if (opregion->acpi) {
821 opregion->acpi->drdy = 0;
822
823 system_opregion = NULL;
824 unregister_acpi_notifier(&intel_opregion_notifier);
825 }
826
827 /* just clear all opregion memory pointers now */
828 memunmap(opregion->header);
829 if (opregion->rvda) {
830 memunmap(opregion->rvda);
831 opregion->rvda = NULL;
832 }
833 opregion->header = NULL;
834 opregion->acpi = NULL;
835 opregion->swsci = NULL;
836 opregion->asle = NULL;
837 opregion->vbt = NULL;
838 opregion->lid_state = NULL;
839 }
840
841 static void swsci_setup(struct drm_i915_private *dev_priv)
842 {
843 struct intel_opregion *opregion = &dev_priv->opregion;
844 bool requested_callbacks = false;
845 u32 tmp;
846
847 /* Sub-function code 0 is okay, let's allow them. */
848 opregion->swsci_gbda_sub_functions = 1;
849 opregion->swsci_sbcb_sub_functions = 1;
850
851 /* We use GBDA to ask for supported GBDA calls. */
852 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
853 /* make the bits match the sub-function codes */
854 tmp <<= 1;
855 opregion->swsci_gbda_sub_functions |= tmp;
856 }
857
858 /*
859 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
860 * must not call interfaces that are not specifically requested by the
861 * bios.
862 */
863 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
864 /* here, the bits already match sub-function codes */
865 opregion->swsci_sbcb_sub_functions |= tmp;
866 requested_callbacks = true;
867 }
868
869 /*
870 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
871 * the callback is _requested_. But we still can't call interfaces that
872 * are not requested.
873 */
874 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
875 /* make the bits match the sub-function codes */
876 u32 low = tmp & 0x7ff;
877 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
878 tmp = (high << 4) | (low << 1) | 1;
879
880 /* best guess what to do with supported wrt requested */
881 if (requested_callbacks) {
882 u32 req = opregion->swsci_sbcb_sub_functions;
883 if ((req & tmp) != req)
884 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
885 /* XXX: for now, trust the requested callbacks */
886 /* opregion->swsci_sbcb_sub_functions &= tmp; */
887 } else {
888 opregion->swsci_sbcb_sub_functions |= tmp;
889 }
890 }
891
892 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
893 opregion->swsci_gbda_sub_functions,
894 opregion->swsci_sbcb_sub_functions);
895 }
896
897 static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
898 {
899 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
900 "VBIOS ROM for %s\n", id->ident);
901 return 1;
902 }
903
904 static const struct dmi_system_id intel_no_opregion_vbt[] = {
905 {
906 .callback = intel_no_opregion_vbt_callback,
907 .ident = "ThinkCentre A57",
908 .matches = {
909 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
910 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
911 },
912 },
913 { }
914 };
915
916 int intel_opregion_setup(struct drm_i915_private *dev_priv)
917 {
918 struct intel_opregion *opregion = &dev_priv->opregion;
919 struct pci_dev *pdev = dev_priv->dev->pdev;
920 u32 asls, mboxes;
921 char buf[sizeof(OPREGION_SIGNATURE)];
922 int err = 0;
923 void *base;
924
925 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
926 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
927 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
928 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
929 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
930
931 pci_read_config_dword(pdev, ASLS, &asls);
932 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
933 if (asls == 0) {
934 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
935 return -ENOTSUPP;
936 }
937
938 INIT_WORK(&opregion->asle_work, asle_work);
939
940 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
941 if (!base)
942 return -ENOMEM;
943
944 memcpy(buf, base, sizeof(buf));
945
946 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
947 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
948 err = -EINVAL;
949 goto err_out;
950 }
951 opregion->header = base;
952 opregion->lid_state = base + ACPI_CLID;
953
954 mboxes = opregion->header->mboxes;
955 if (mboxes & MBOX_ACPI) {
956 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
957 opregion->acpi = base + OPREGION_ACPI_OFFSET;
958 }
959
960 if (mboxes & MBOX_SWSCI) {
961 DRM_DEBUG_DRIVER("SWSCI supported\n");
962 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
963 swsci_setup(dev_priv);
964 }
965
966 if (mboxes & MBOX_ASLE) {
967 DRM_DEBUG_DRIVER("ASLE supported\n");
968 opregion->asle = base + OPREGION_ASLE_OFFSET;
969
970 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
971 }
972
973 if (mboxes & MBOX_ASLE_EXT)
974 DRM_DEBUG_DRIVER("ASLE extension supported\n");
975
976 if (!dmi_check_system(intel_no_opregion_vbt)) {
977 const void *vbt = NULL;
978 u32 vbt_size = 0;
979
980 if (opregion->header->opregion_ver >= 2 && opregion->asle &&
981 opregion->asle->rvda && opregion->asle->rvds) {
982 opregion->rvda = memremap(opregion->asle->rvda,
983 opregion->asle->rvds,
984 MEMREMAP_WB);
985 vbt = opregion->rvda;
986 vbt_size = opregion->asle->rvds;
987 }
988
989 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
990 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
991 opregion->vbt = vbt;
992 opregion->vbt_size = vbt_size;
993 } else {
994 vbt = base + OPREGION_VBT_OFFSET;
995 vbt_size = OPREGION_ASLE_EXT_OFFSET - OPREGION_VBT_OFFSET;
996 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
997 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
998 opregion->vbt = vbt;
999 opregion->vbt_size = vbt_size;
1000 }
1001 }
1002 }
1003
1004 return 0;
1005
1006 err_out:
1007 memunmap(base);
1008 return err;
1009 }
1010
1011 int
1012 intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1013 {
1014 u32 panel_details;
1015 int ret;
1016
1017 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1018 if (ret) {
1019 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n",
1020 ret);
1021 return ret;
1022 }
1023
1024 ret = (panel_details >> 8) & 0xff;
1025 if (ret > 0x10) {
1026 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret);
1027 return -EINVAL;
1028 }
1029
1030 /* fall back to VBT panel type? */
1031 if (ret == 0x0) {
1032 DRM_DEBUG_KMS("No panel type in OpRegion\n");
1033 return -ENODEV;
1034 }
1035
1036 return ret - 1;
1037 }
Linux kernel - Deliverables
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