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drm/i915: Drop the broken cursor base==0 special casing
[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 <acpi/video.h>
30
31 #include <drm/drmP.h>
32 #include <drm/i915_drm.h>
33 #include "i915_drv.h"
34 #include "intel_drv.h"
35
36 #define PCI_ASLE 0xe4
37 #define PCI_ASLS 0xfc
38 #define PCI_SWSCI 0xe8
39 #define PCI_SWSCI_SCISEL (1 << 15)
40 #define PCI_SWSCI_GSSCIE (1 << 0)
41
42 #define OPREGION_HEADER_OFFSET 0
43 #define OPREGION_ACPI_OFFSET 0x100
44 #define ACPI_CLID 0x01ac /* current lid state indicator */
45 #define ACPI_CDCK 0x01b0 /* current docking state indicator */
46 #define OPREGION_SWSCI_OFFSET 0x200
47 #define OPREGION_ASLE_OFFSET 0x300
48 #define OPREGION_VBT_OFFSET 0x400
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 #define MBOX_ASLE_EXT (1<<4)
55
56 struct opregion_header {
57 u8 signature[16];
58 u32 size;
59 u32 opregion_ver;
60 u8 bios_ver[32];
61 u8 vbios_ver[16];
62 u8 driver_ver[16];
63 u32 mboxes;
64 u32 driver_model;
65 u32 pcon;
66 u8 dver[32];
67 u8 rsvd[124];
68 } __packed;
69
70 /* OpRegion mailbox #1: public ACPI methods */
71 struct opregion_acpi {
72 u32 drdy; /* driver readiness */
73 u32 csts; /* notification status */
74 u32 cevt; /* current event */
75 u8 rsvd1[20];
76 u32 didl[8]; /* supported display devices ID list */
77 u32 cpdl[8]; /* currently presented display list */
78 u32 cadl[8]; /* currently active display list */
79 u32 nadl[8]; /* next active devices list */
80 u32 aslp; /* ASL sleep time-out */
81 u32 tidx; /* toggle table index */
82 u32 chpd; /* current hotplug enable indicator */
83 u32 clid; /* current lid state*/
84 u32 cdck; /* current docking state */
85 u32 sxsw; /* Sx state resume */
86 u32 evts; /* ASL supported events */
87 u32 cnot; /* current OS notification */
88 u32 nrdy; /* driver status */
89 u32 did2[7]; /* extended supported display devices ID list */
90 u32 cpd2[7]; /* extended attached display devices list */
91 u8 rsvd2[4];
92 } __packed;
93
94 /* OpRegion mailbox #2: SWSCI */
95 struct opregion_swsci {
96 u32 scic; /* SWSCI command|status|data */
97 u32 parm; /* command parameters */
98 u32 dslp; /* driver sleep time-out */
99 u8 rsvd[244];
100 } __packed;
101
102 /* OpRegion mailbox #3: ASLE */
103 struct opregion_asle {
104 u32 ardy; /* driver readiness */
105 u32 aslc; /* ASLE interrupt command */
106 u32 tche; /* technology enabled indicator */
107 u32 alsi; /* current ALS illuminance reading */
108 u32 bclp; /* backlight brightness to set */
109 u32 pfit; /* panel fitting state */
110 u32 cblv; /* current brightness level */
111 u16 bclm[20]; /* backlight level duty cycle mapping table */
112 u32 cpfm; /* current panel fitting mode */
113 u32 epfm; /* enabled panel fitting modes */
114 u8 plut[74]; /* panel LUT and identifier */
115 u32 pfmb; /* PWM freq and min brightness */
116 u32 cddv; /* color correction default values */
117 u32 pcft; /* power conservation features */
118 u32 srot; /* supported rotation angles */
119 u32 iuer; /* IUER events */
120 u64 fdss;
121 u32 fdsp;
122 u32 stat;
123 u64 rvda; /* Physical address of raw vbt data */
124 u32 rvds; /* Size of raw vbt data */
125 u8 rsvd[58];
126 } __packed;
127
128 /* Driver readiness indicator */
129 #define ASLE_ARDY_READY (1 << 0)
130 #define ASLE_ARDY_NOT_READY (0 << 0)
131
132 /* ASLE Interrupt Command (ASLC) bits */
133 #define ASLC_SET_ALS_ILLUM (1 << 0)
134 #define ASLC_SET_BACKLIGHT (1 << 1)
135 #define ASLC_SET_PFIT (1 << 2)
136 #define ASLC_SET_PWM_FREQ (1 << 3)
137 #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
138 #define ASLC_BUTTON_ARRAY (1 << 5)
139 #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
140 #define ASLC_DOCKING_INDICATOR (1 << 7)
141 #define ASLC_ISCT_STATE_CHANGE (1 << 8)
142 #define ASLC_REQ_MSK 0x1ff
143 /* response bits */
144 #define ASLC_ALS_ILLUM_FAILED (1 << 10)
145 #define ASLC_BACKLIGHT_FAILED (1 << 12)
146 #define ASLC_PFIT_FAILED (1 << 14)
147 #define ASLC_PWM_FREQ_FAILED (1 << 16)
148 #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
149 #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
150 #define ASLC_CONVERTIBLE_FAILED (1 << 22)
151 #define ASLC_DOCKING_FAILED (1 << 24)
152 #define ASLC_ISCT_STATE_FAILED (1 << 26)
153
154 /* Technology enabled indicator */
155 #define ASLE_TCHE_ALS_EN (1 << 0)
156 #define ASLE_TCHE_BLC_EN (1 << 1)
157 #define ASLE_TCHE_PFIT_EN (1 << 2)
158 #define ASLE_TCHE_PFMB_EN (1 << 3)
159
160 /* ASLE backlight brightness to set */
161 #define ASLE_BCLP_VALID (1<<31)
162 #define ASLE_BCLP_MSK (~(1<<31))
163
164 /* ASLE panel fitting request */
165 #define ASLE_PFIT_VALID (1<<31)
166 #define ASLE_PFIT_CENTER (1<<0)
167 #define ASLE_PFIT_STRETCH_TEXT (1<<1)
168 #define ASLE_PFIT_STRETCH_GFX (1<<2)
169
170 /* PWM frequency and minimum brightness */
171 #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
172 #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
173 #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
174 #define ASLE_PFMB_PWM_VALID (1<<31)
175
176 #define ASLE_CBLV_VALID (1<<31)
177
178 /* IUER */
179 #define ASLE_IUER_DOCKING (1 << 7)
180 #define ASLE_IUER_CONVERTIBLE (1 << 6)
181 #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
182 #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
183 #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
184 #define ASLE_IUER_WINDOWS_BTN (1 << 1)
185 #define ASLE_IUER_POWER_BTN (1 << 0)
186
187 /* Software System Control Interrupt (SWSCI) */
188 #define SWSCI_SCIC_INDICATOR (1 << 0)
189 #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
190 #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
191 #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
192 #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
193 #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
194 #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
195 #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
196 #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
197 #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
198
199 #define SWSCI_FUNCTION_CODE(main, sub) \
200 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
201 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
202
203 /* SWSCI: Get BIOS Data (GBDA) */
204 #define SWSCI_GBDA 4
205 #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
206 #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
207 #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
208 #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
209 #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
210 #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
211 #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
212
213 /* SWSCI: System BIOS Callbacks (SBCB) */
214 #define SWSCI_SBCB 6
215 #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
216 #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
217 #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
218 #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
219 #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
220 #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
221 #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
222 #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
223 #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
224 #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
225 #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
226 #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
227 #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
228 #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
229 #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
230 #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
231
232 #define ACPI_OTHER_OUTPUT (0<<8)
233 #define ACPI_VGA_OUTPUT (1<<8)
234 #define ACPI_TV_OUTPUT (2<<8)
235 #define ACPI_DIGITAL_OUTPUT (3<<8)
236 #define ACPI_LVDS_OUTPUT (4<<8)
237
238 #define MAX_DSLP 1500
239
240 #ifdef CONFIG_ACPI
241 static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
242 {
243 struct drm_i915_private *dev_priv = dev->dev_private;
244 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
245 u32 main_function, sub_function, scic;
246 u16 pci_swsci;
247 u32 dslp;
248
249 if (!swsci)
250 return -ENODEV;
251
252 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
253 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
254 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
255 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
256
257 /* Check if we can call the function. See swsci_setup for details. */
258 if (main_function == SWSCI_SBCB) {
259 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
260 (1 << sub_function)) == 0)
261 return -EINVAL;
262 } else if (main_function == SWSCI_GBDA) {
263 if ((dev_priv->opregion.swsci_gbda_sub_functions &
264 (1 << sub_function)) == 0)
265 return -EINVAL;
266 }
267
268 /* Driver sleep timeout in ms. */
269 dslp = swsci->dslp;
270 if (!dslp) {
271 /* The spec says 2ms should be the default, but it's too small
272 * for some machines. */
273 dslp = 50;
274 } else if (dslp > MAX_DSLP) {
275 /* Hey bios, trust must be earned. */
276 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
277 "using %u ms instead\n", dslp, MAX_DSLP);
278 dslp = MAX_DSLP;
279 }
280
281 /* The spec tells us to do this, but we are the only user... */
282 scic = swsci->scic;
283 if (scic & SWSCI_SCIC_INDICATOR) {
284 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
285 return -EBUSY;
286 }
287
288 scic = function | SWSCI_SCIC_INDICATOR;
289
290 swsci->parm = parm;
291 swsci->scic = scic;
292
293 /* Ensure SCI event is selected and event trigger is cleared. */
294 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci);
295 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) {
296 pci_swsci |= PCI_SWSCI_SCISEL;
297 pci_swsci &= ~PCI_SWSCI_GSSCIE;
298 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
299 }
300
301 /* Use event trigger to tell bios to check the mail. */
302 pci_swsci |= PCI_SWSCI_GSSCIE;
303 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
304
305 /* Poll for the result. */
306 #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
307 if (wait_for(C, dslp)) {
308 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
309 return -ETIMEDOUT;
310 }
311
312 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
313 SWSCI_SCIC_EXIT_STATUS_SHIFT;
314
315 /* Note: scic == 0 is an error! */
316 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
317 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
318 return -EIO;
319 }
320
321 if (parm_out)
322 *parm_out = swsci->parm;
323
324 return 0;
325
326 #undef C
327 }
328
329 #define DISPLAY_TYPE_CRT 0
330 #define DISPLAY_TYPE_TV 1
331 #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
332 #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
333
334 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
335 bool enable)
336 {
337 struct drm_device *dev = intel_encoder->base.dev;
338 u32 parm = 0;
339 u32 type = 0;
340 u32 port;
341
342 /* don't care about old stuff for now */
343 if (!HAS_DDI(dev))
344 return 0;
345
346 if (intel_encoder->type == INTEL_OUTPUT_DSI)
347 port = 0;
348 else
349 port = intel_ddi_get_encoder_port(intel_encoder);
350
351 if (port == PORT_E) {
352 port = 0;
353 } else {
354 parm |= 1 << port;
355 port++;
356 }
357
358 if (!enable)
359 parm |= 4 << 8;
360
361 switch (intel_encoder->type) {
362 case INTEL_OUTPUT_ANALOG:
363 type = DISPLAY_TYPE_CRT;
364 break;
365 case INTEL_OUTPUT_UNKNOWN:
366 case INTEL_OUTPUT_DISPLAYPORT:
367 case INTEL_OUTPUT_HDMI:
368 case INTEL_OUTPUT_DP_MST:
369 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
370 break;
371 case INTEL_OUTPUT_EDP:
372 case INTEL_OUTPUT_DSI:
373 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
374 break;
375 default:
376 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
377 intel_encoder->type);
378 return -EINVAL;
379 }
380
381 parm |= type << (16 + port * 3);
382
383 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
384 }
385
386 static const struct {
387 pci_power_t pci_power_state;
388 u32 parm;
389 } power_state_map[] = {
390 { PCI_D0, 0x00 },
391 { PCI_D1, 0x01 },
392 { PCI_D2, 0x02 },
393 { PCI_D3hot, 0x04 },
394 { PCI_D3cold, 0x04 },
395 };
396
397 int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
398 {
399 int i;
400
401 if (!HAS_DDI(dev))
402 return 0;
403
404 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
405 if (state == power_state_map[i].pci_power_state)
406 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE,
407 power_state_map[i].parm, NULL);
408 }
409
410 return -EINVAL;
411 }
412
413 static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
414 {
415 struct drm_i915_private *dev_priv = dev->dev_private;
416 struct intel_connector *intel_connector;
417 struct opregion_asle *asle = dev_priv->opregion.asle;
418
419 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
420
421 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
422 DRM_DEBUG_KMS("opregion backlight request ignored\n");
423 return 0;
424 }
425
426 if (!(bclp & ASLE_BCLP_VALID))
427 return ASLC_BACKLIGHT_FAILED;
428
429 bclp &= ASLE_BCLP_MSK;
430 if (bclp > 255)
431 return ASLC_BACKLIGHT_FAILED;
432
433 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
434
435 /*
436 * Update backlight on all connectors that support backlight (usually
437 * only one).
438 */
439 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
440 list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head)
441 intel_panel_set_backlight_acpi(intel_connector, bclp, 255);
442 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
443
444 drm_modeset_unlock(&dev->mode_config.connection_mutex);
445
446
447 return 0;
448 }
449
450 static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
451 {
452 /* alsi is the current ALS reading in lux. 0 indicates below sensor
453 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
454 DRM_DEBUG_DRIVER("Illum is not supported\n");
455 return ASLC_ALS_ILLUM_FAILED;
456 }
457
458 static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
459 {
460 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
461 return ASLC_PWM_FREQ_FAILED;
462 }
463
464 static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
465 {
466 /* Panel fitting is currently controlled by the X code, so this is a
467 noop until modesetting support works fully */
468 DRM_DEBUG_DRIVER("Pfit is not supported\n");
469 return ASLC_PFIT_FAILED;
470 }
471
472 static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot)
473 {
474 DRM_DEBUG_DRIVER("SROT is not supported\n");
475 return ASLC_ROTATION_ANGLES_FAILED;
476 }
477
478 static u32 asle_set_button_array(struct drm_device *dev, u32 iuer)
479 {
480 if (!iuer)
481 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
482 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
483 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
484 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
485 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
486 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
487 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
488 if (iuer & ASLE_IUER_WINDOWS_BTN)
489 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
490 if (iuer & ASLE_IUER_POWER_BTN)
491 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
492
493 return ASLC_BUTTON_ARRAY_FAILED;
494 }
495
496 static u32 asle_set_convertible(struct drm_device *dev, u32 iuer)
497 {
498 if (iuer & ASLE_IUER_CONVERTIBLE)
499 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
500 else
501 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
502
503 return ASLC_CONVERTIBLE_FAILED;
504 }
505
506 static u32 asle_set_docking(struct drm_device *dev, u32 iuer)
507 {
508 if (iuer & ASLE_IUER_DOCKING)
509 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
510 else
511 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
512
513 return ASLC_DOCKING_FAILED;
514 }
515
516 static u32 asle_isct_state(struct drm_device *dev)
517 {
518 DRM_DEBUG_DRIVER("ISCT is not supported\n");
519 return ASLC_ISCT_STATE_FAILED;
520 }
521
522 static void asle_work(struct work_struct *work)
523 {
524 struct intel_opregion *opregion =
525 container_of(work, struct intel_opregion, asle_work);
526 struct drm_i915_private *dev_priv =
527 container_of(opregion, struct drm_i915_private, opregion);
528 struct drm_device *dev = dev_priv->dev;
529 struct opregion_asle *asle = dev_priv->opregion.asle;
530 u32 aslc_stat = 0;
531 u32 aslc_req;
532
533 if (!asle)
534 return;
535
536 aslc_req = asle->aslc;
537
538 if (!(aslc_req & ASLC_REQ_MSK)) {
539 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
540 aslc_req);
541 return;
542 }
543
544 if (aslc_req & ASLC_SET_ALS_ILLUM)
545 aslc_stat |= asle_set_als_illum(dev, asle->alsi);
546
547 if (aslc_req & ASLC_SET_BACKLIGHT)
548 aslc_stat |= asle_set_backlight(dev, asle->bclp);
549
550 if (aslc_req & ASLC_SET_PFIT)
551 aslc_stat |= asle_set_pfit(dev, asle->pfit);
552
553 if (aslc_req & ASLC_SET_PWM_FREQ)
554 aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb);
555
556 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
557 aslc_stat |= asle_set_supported_rotation_angles(dev,
558 asle->srot);
559
560 if (aslc_req & ASLC_BUTTON_ARRAY)
561 aslc_stat |= asle_set_button_array(dev, asle->iuer);
562
563 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
564 aslc_stat |= asle_set_convertible(dev, asle->iuer);
565
566 if (aslc_req & ASLC_DOCKING_INDICATOR)
567 aslc_stat |= asle_set_docking(dev, asle->iuer);
568
569 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
570 aslc_stat |= asle_isct_state(dev);
571
572 asle->aslc = aslc_stat;
573 }
574
575 void intel_opregion_asle_intr(struct drm_device *dev)
576 {
577 struct drm_i915_private *dev_priv = dev->dev_private;
578
579 if (dev_priv->opregion.asle)
580 schedule_work(&dev_priv->opregion.asle_work);
581 }
582
583 #define ACPI_EV_DISPLAY_SWITCH (1<<0)
584 #define ACPI_EV_LID (1<<1)
585 #define ACPI_EV_DOCK (1<<2)
586
587 static struct intel_opregion *system_opregion;
588
589 static int intel_opregion_video_event(struct notifier_block *nb,
590 unsigned long val, void *data)
591 {
592 /* The only video events relevant to opregion are 0x80. These indicate
593 either a docking event, lid switch or display switch request. In
594 Linux, these are handled by the dock, button and video drivers.
595 */
596
597 struct acpi_bus_event *event = data;
598 struct opregion_acpi *acpi;
599 int ret = NOTIFY_OK;
600
601 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
602 return NOTIFY_DONE;
603
604 if (!system_opregion)
605 return NOTIFY_DONE;
606
607 acpi = system_opregion->acpi;
608
609 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
610 ret = NOTIFY_BAD;
611
612 acpi->csts = 0;
613
614 return ret;
615 }
616
617 static struct notifier_block intel_opregion_notifier = {
618 .notifier_call = intel_opregion_video_event,
619 };
620
621 /*
622 * Initialise the DIDL field in opregion. This passes a list of devices to
623 * the firmware. Values are defined by section B.4.2 of the ACPI specification
624 * (version 3)
625 */
626
627 static u32 get_did(struct intel_opregion *opregion, int i)
628 {
629 u32 did;
630
631 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
632 did = opregion->acpi->didl[i];
633 } else {
634 i -= ARRAY_SIZE(opregion->acpi->didl);
635
636 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
637 return 0;
638
639 did = opregion->acpi->did2[i];
640 }
641
642 return did;
643 }
644
645 static void set_did(struct intel_opregion *opregion, int i, u32 val)
646 {
647 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
648 opregion->acpi->didl[i] = val;
649 } else {
650 i -= ARRAY_SIZE(opregion->acpi->didl);
651
652 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
653 return;
654
655 opregion->acpi->did2[i] = val;
656 }
657 }
658
659 static void intel_didl_outputs(struct drm_device *dev)
660 {
661 struct drm_i915_private *dev_priv = dev->dev_private;
662 struct intel_opregion *opregion = &dev_priv->opregion;
663 struct drm_connector *connector;
664 acpi_handle handle;
665 struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
666 unsigned long long device_id;
667 acpi_status status;
668 u32 temp, max_outputs;
669 int i = 0;
670
671 handle = ACPI_HANDLE(&dev->pdev->dev);
672 if (!handle || acpi_bus_get_device(handle, &acpi_dev))
673 return;
674
675 if (acpi_is_video_device(handle))
676 acpi_video_bus = acpi_dev;
677 else {
678 list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
679 if (acpi_is_video_device(acpi_cdev->handle)) {
680 acpi_video_bus = acpi_cdev;
681 break;
682 }
683 }
684 }
685
686 if (!acpi_video_bus) {
687 DRM_DEBUG_KMS("No ACPI video bus found\n");
688 return;
689 }
690
691 /*
692 * In theory, did2, the extended didl, gets added at opregion version
693 * 3.0. In practice, however, we're supposed to set it for earlier
694 * versions as well, since a BIOS that doesn't understand did2 should
695 * not look at it anyway. Use a variable so we can tweak this if a need
696 * arises later.
697 */
698 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
699 ARRAY_SIZE(opregion->acpi->did2);
700
701 list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
702 if (i >= max_outputs) {
703 DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
704 max_outputs);
705 return;
706 }
707 status = acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
708 NULL, &device_id);
709 if (ACPI_SUCCESS(status)) {
710 if (!device_id)
711 goto blind_set;
712 set_did(opregion, i++, (u32)(device_id & 0x0f0f));
713 }
714 }
715
716 end:
717 DRM_DEBUG_KMS("%d outputs detected\n", i);
718
719 /* If fewer than max outputs, the list must be null terminated */
720 if (i < max_outputs)
721 set_did(opregion, i, 0);
722 return;
723
724 blind_set:
725 i = 0;
726 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
727 int output_type = ACPI_OTHER_OUTPUT;
728 if (i >= max_outputs) {
729 DRM_DEBUG_KMS("More than %u outputs in connector list\n",
730 max_outputs);
731 return;
732 }
733 switch (connector->connector_type) {
734 case DRM_MODE_CONNECTOR_VGA:
735 case DRM_MODE_CONNECTOR_DVIA:
736 output_type = ACPI_VGA_OUTPUT;
737 break;
738 case DRM_MODE_CONNECTOR_Composite:
739 case DRM_MODE_CONNECTOR_SVIDEO:
740 case DRM_MODE_CONNECTOR_Component:
741 case DRM_MODE_CONNECTOR_9PinDIN:
742 output_type = ACPI_TV_OUTPUT;
743 break;
744 case DRM_MODE_CONNECTOR_DVII:
745 case DRM_MODE_CONNECTOR_DVID:
746 case DRM_MODE_CONNECTOR_DisplayPort:
747 case DRM_MODE_CONNECTOR_HDMIA:
748 case DRM_MODE_CONNECTOR_HDMIB:
749 output_type = ACPI_DIGITAL_OUTPUT;
750 break;
751 case DRM_MODE_CONNECTOR_LVDS:
752 output_type = ACPI_LVDS_OUTPUT;
753 break;
754 }
755 temp = get_did(opregion, i);
756 set_did(opregion, i, temp | (1 << 31) | output_type | i);
757 i++;
758 }
759 goto end;
760 }
761
762 static void intel_setup_cadls(struct drm_device *dev)
763 {
764 struct drm_i915_private *dev_priv = dev->dev_private;
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_device *dev)
782 {
783 struct drm_i915_private *dev_priv = dev->dev_private;
784 struct intel_opregion *opregion = &dev_priv->opregion;
785
786 if (!opregion->header)
787 return;
788
789 if (opregion->acpi) {
790 intel_didl_outputs(dev);
791 intel_setup_cadls(dev);
792
793 /* Notify BIOS we are ready to handle ACPI video ext notifs.
794 * Right now, all the events are handled by the ACPI video module.
795 * We don't actually need to do anything with them. */
796 opregion->acpi->csts = 0;
797 opregion->acpi->drdy = 1;
798
799 system_opregion = opregion;
800 register_acpi_notifier(&intel_opregion_notifier);
801 }
802
803 if (opregion->asle) {
804 opregion->asle->tche = ASLE_TCHE_BLC_EN;
805 opregion->asle->ardy = ASLE_ARDY_READY;
806 }
807 }
808
809 void intel_opregion_fini(struct drm_device *dev)
810 {
811 struct drm_i915_private *dev_priv = dev->dev_private;
812 struct intel_opregion *opregion = &dev_priv->opregion;
813
814 if (!opregion->header)
815 return;
816
817 if (opregion->asle)
818 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
819
820 cancel_work_sync(&dev_priv->opregion.asle_work);
821
822 if (opregion->acpi) {
823 opregion->acpi->drdy = 0;
824
825 system_opregion = NULL;
826 unregister_acpi_notifier(&intel_opregion_notifier);
827 }
828
829 /* just clear all opregion memory pointers now */
830 memunmap(opregion->header);
831 opregion->header = NULL;
832 opregion->acpi = NULL;
833 opregion->swsci = NULL;
834 opregion->asle = NULL;
835 opregion->vbt = NULL;
836 opregion->lid_state = NULL;
837 }
838
839 static void swsci_setup(struct drm_device *dev)
840 {
841 struct drm_i915_private *dev_priv = dev->dev_private;
842 struct intel_opregion *opregion = &dev_priv->opregion;
843 bool requested_callbacks = false;
844 u32 tmp;
845
846 /* Sub-function code 0 is okay, let's allow them. */
847 opregion->swsci_gbda_sub_functions = 1;
848 opregion->swsci_sbcb_sub_functions = 1;
849
850 /* We use GBDA to ask for supported GBDA calls. */
851 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
852 /* make the bits match the sub-function codes */
853 tmp <<= 1;
854 opregion->swsci_gbda_sub_functions |= tmp;
855 }
856
857 /*
858 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
859 * must not call interfaces that are not specifically requested by the
860 * bios.
861 */
862 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
863 /* here, the bits already match sub-function codes */
864 opregion->swsci_sbcb_sub_functions |= tmp;
865 requested_callbacks = true;
866 }
867
868 /*
869 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
870 * the callback is _requested_. But we still can't call interfaces that
871 * are not requested.
872 */
873 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
874 /* make the bits match the sub-function codes */
875 u32 low = tmp & 0x7ff;
876 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
877 tmp = (high << 4) | (low << 1) | 1;
878
879 /* best guess what to do with supported wrt requested */
880 if (requested_callbacks) {
881 u32 req = opregion->swsci_sbcb_sub_functions;
882 if ((req & tmp) != req)
883 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
884 /* XXX: for now, trust the requested callbacks */
885 /* opregion->swsci_sbcb_sub_functions &= tmp; */
886 } else {
887 opregion->swsci_sbcb_sub_functions |= tmp;
888 }
889 }
890
891 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
892 opregion->swsci_gbda_sub_functions,
893 opregion->swsci_sbcb_sub_functions);
894 }
895 #else /* CONFIG_ACPI */
896 static inline void swsci_setup(struct drm_device *dev) {}
897 #endif /* CONFIG_ACPI */
898
899 int intel_opregion_setup(struct drm_device *dev)
900 {
901 struct drm_i915_private *dev_priv = dev->dev_private;
902 struct intel_opregion *opregion = &dev_priv->opregion;
903 u32 asls, mboxes;
904 char buf[sizeof(OPREGION_SIGNATURE)];
905 int err = 0;
906 void *base;
907
908 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
909 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
910 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
911 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
912
913 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
914 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
915 if (asls == 0) {
916 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
917 return -ENOTSUPP;
918 }
919
920 #ifdef CONFIG_ACPI
921 INIT_WORK(&opregion->asle_work, asle_work);
922 #endif
923
924 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
925 if (!base)
926 return -ENOMEM;
927
928 memcpy(buf, base, sizeof(buf));
929
930 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
931 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
932 err = -EINVAL;
933 goto err_out;
934 }
935 opregion->header = base;
936 opregion->vbt = base + OPREGION_VBT_OFFSET;
937
938 opregion->lid_state = base + ACPI_CLID;
939
940 mboxes = opregion->header->mboxes;
941 if (mboxes & MBOX_ACPI) {
942 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
943 opregion->acpi = base + OPREGION_ACPI_OFFSET;
944 }
945
946 if (mboxes & MBOX_SWSCI) {
947 DRM_DEBUG_DRIVER("SWSCI supported\n");
948 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
949 swsci_setup(dev);
950 }
951 if (mboxes & MBOX_ASLE) {
952 DRM_DEBUG_DRIVER("ASLE supported\n");
953 opregion->asle = base + OPREGION_ASLE_OFFSET;
954
955 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
956 }
957
958 return 0;
959
960 err_out:
961 memunmap(base);
962 return err;
963 }
Linux kernel - Deliverables
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