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Merge remote-tracking branch 'acme/perf/urgent' into perf/core
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_opregion.c
CommitLineData
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>
74a365b3 31#include <acpi/video.h>
8ee1c3db 32
760285e7
DH		 33#include <drm/drmP.h>
34#include <drm/i915_drm.h>
8ee1c3db 35#include "i915_drv.h"
a9573556 36#include "intel_drv.h"
8ee1c3db 37
ebde53c7
JN		 38#define PCI_ASLE 0xe4
39#define PCI_ASLS 0xfc
40#define PCI_SWSCI 0xe8
41#define PCI_SWSCI_SCISEL (1 << 15)
42#define PCI_SWSCI_GSSCIE (1 << 0)
8ee1c3db 43
8ee1c3db
MG		 44#define OPREGION_HEADER_OFFSET 0
45#define OPREGION_ACPI_OFFSET 0x100
82d3c90c
CW		 46#define ACPI_CLID 0x01ac /* current lid state indicator */
47#define ACPI_CDCK 0x01b0 /* current docking state indicator */
8ee1c3db
MG		 48#define OPREGION_SWSCI_OFFSET 0x200
49#define OPREGION_ASLE_OFFSET 0x300
44834a67 50#define OPREGION_VBT_OFFSET 0x400
8ee1c3db
MG		 51
52#define OPREGION_SIGNATURE "IntelGraphicsMem"
53#define MBOX_ACPI (1<<0)
54#define MBOX_SWSCI (1<<1)
55#define MBOX_ASLE (1<<2)
56
57struct opregion_header {
0206e353
AJ		 58 u8 signature[16];
59 u32 size;
60 u32 opregion_ver;
61 u8 bios_ver[32];
62 u8 vbios_ver[16];
63 u8 driver_ver[16];
64 u32 mboxes;
65 u8 reserved[164];
e4451239 66} __packed;
8ee1c3db
MG		 67
68/* OpRegion mailbox #1: public ACPI methods */
69struct opregion_acpi {
0206e353
AJ		 70 u32 drdy; /* driver readiness */
71 u32 csts; /* notification status */
72 u32 cevt; /* current event */
73 u8 rsvd1[20];
74 u32 didl[8]; /* supported display devices ID list */
75 u32 cpdl[8]; /* currently presented display list */
76 u32 cadl[8]; /* currently active display list */
77 u32 nadl[8]; /* next active devices list */
78 u32 aslp; /* ASL sleep time-out */
79 u32 tidx; /* toggle table index */
80 u32 chpd; /* current hotplug enable indicator */
81 u32 clid; /* current lid state*/
82 u32 cdck; /* current docking state */
83 u32 sxsw; /* Sx state resume */
84 u32 evts; /* ASL supported events */
85 u32 cnot; /* current OS notification */
86 u32 nrdy; /* driver status */
87 u8 rsvd2[60];
e4451239 88} __packed;
8ee1c3db
MG		 89
90/* OpRegion mailbox #2: SWSCI */
91struct opregion_swsci {
0206e353
AJ		 92 u32 scic; /* SWSCI command|status|data */
93 u32 parm; /* command parameters */
94 u32 dslp; /* driver sleep time-out */
95 u8 rsvd[244];
e4451239 96} __packed;
8ee1c3db
MG		 97
98/* OpRegion mailbox #3: ASLE */
99struct opregion_asle {
0206e353
AJ		 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 */
507c1a45
PZ		 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 u8 rsvd[86];
e4451239 117} __packed;
8ee1c3db 118
68bca4b0
JN		 119/* Driver readiness indicator */
120#define ASLE_ARDY_READY (1 << 0)
121#define ASLE_ARDY_NOT_READY (0 << 0)
122
507c1a45
PZ		 123/* ASLE Interrupt Command (ASLC) bits */
124#define ASLC_SET_ALS_ILLUM (1 << 0)
125#define ASLC_SET_BACKLIGHT (1 << 1)
126#define ASLC_SET_PFIT (1 << 2)
127#define ASLC_SET_PWM_FREQ (1 << 3)
128#define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
129#define ASLC_BUTTON_ARRAY (1 << 5)
130#define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
131#define ASLC_DOCKING_INDICATOR (1 << 7)
132#define ASLC_ISCT_STATE_CHANGE (1 << 8)
133#define ASLC_REQ_MSK 0x1ff
134/* response bits */
135#define ASLC_ALS_ILLUM_FAILED (1 << 10)
136#define ASLC_BACKLIGHT_FAILED (1 << 12)
137#define ASLC_PFIT_FAILED (1 << 14)
138#define ASLC_PWM_FREQ_FAILED (1 << 16)
139#define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
140#define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
141#define ASLC_CONVERTIBLE_FAILED (1 << 22)
142#define ASLC_DOCKING_FAILED (1 << 24)
143#define ASLC_ISCT_STATE_FAILED (1 << 26)
8ee1c3db 144
f599cc29
JN		 145/* Technology enabled indicator */
146#define ASLE_TCHE_ALS_EN (1 << 0)
147#define ASLE_TCHE_BLC_EN (1 << 1)
148#define ASLE_TCHE_PFIT_EN (1 << 2)
149#define ASLE_TCHE_PFMB_EN (1 << 3)
150
8ee1c3db
MG		 151/* ASLE backlight brightness to set */
152#define ASLE_BCLP_VALID (1<<31)
153#define ASLE_BCLP_MSK (~(1<<31))
154
155/* ASLE panel fitting request */
156#define ASLE_PFIT_VALID (1<<31)
157#define ASLE_PFIT_CENTER (1<<0)
158#define ASLE_PFIT_STRETCH_TEXT (1<<1)
159#define ASLE_PFIT_STRETCH_GFX (1<<2)
160
161/* PWM frequency and minimum brightness */
162#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
163#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
164#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
165#define ASLE_PFMB_PWM_VALID (1<<31)
166
167#define ASLE_CBLV_VALID (1<<31)
168
507c1a45
PZ		 169/* IUER */
170#define ASLE_IUER_DOCKING (1 << 7)
171#define ASLE_IUER_CONVERTIBLE (1 << 6)
172#define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
173#define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
174#define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
175#define ASLE_IUER_WINDOWS_BTN (1 << 1)
176#define ASLE_IUER_POWER_BTN (1 << 0)
177
ebde53c7
JN		 178/* Software System Control Interrupt (SWSCI) */
179#define SWSCI_SCIC_INDICATOR (1 << 0)
180#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
181#define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
182#define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
183#define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
184#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
185#define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
186#define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
187#define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
188#define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
189
190#define SWSCI_FUNCTION_CODE(main, sub) \
191 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
192 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
193
194/* SWSCI: Get BIOS Data (GBDA) */
195#define SWSCI_GBDA 4
196#define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
197#define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
198#define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
199#define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
200#define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
201#define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
202#define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
203
204/* SWSCI: System BIOS Callbacks (SBCB) */
205#define SWSCI_SBCB 6
206#define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
207#define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
208#define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
209#define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
210#define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
211#define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
212#define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
213#define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
214#define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
215#define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
216#define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
217#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
218#define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
219#define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
220#define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
221#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
222
74a365b3
MG		 223#define ACPI_OTHER_OUTPUT (0<<8)
224#define ACPI_VGA_OUTPUT (1<<8)
225#define ACPI_TV_OUTPUT (2<<8)
226#define ACPI_DIGITAL_OUTPUT (3<<8)
227#define ACPI_LVDS_OUTPUT (4<<8)
228
44834a67 229#ifdef CONFIG_ACPI
ebde53c7
JN		 230static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
231{
232 struct drm_i915_private *dev_priv = dev->dev_private;
233 struct opregion_swsci __iomem *swsci = dev_priv->opregion.swsci;
234 u32 main_function, sub_function, scic;
235 u16 pci_swsci;
236 u32 dslp;
237
238 if (!swsci)
239 return -ENODEV;
240
241 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
242 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
243 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
244 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
245
246 /* Check if we can call the function. See swsci_setup for details. */
247 if (main_function == SWSCI_SBCB) {
248 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
249 (1 << sub_function)) == 0)
250 return -EINVAL;
251 } else if (main_function == SWSCI_GBDA) {
252 if ((dev_priv->opregion.swsci_gbda_sub_functions &
253 (1 << sub_function)) == 0)
254 return -EINVAL;
255 }
256
257 /* Driver sleep timeout in ms. */
258 dslp = ioread32(&swsci->dslp);
259 if (!dslp) {
4994aa8c
PZ		 260 /* The spec says 2ms should be the default, but it's too small
261 * for some machines. */
262 dslp = 50;
ebde53c7
JN		 263 } else if (dslp > 500) {
264 /* Hey bios, trust must be earned. */
265 WARN_ONCE(1, "excessive driver sleep timeout (DSPL) %u\n", dslp);
266 dslp = 500;
267 }
268
269 /* The spec tells us to do this, but we are the only user... */
270 scic = ioread32(&swsci->scic);
271 if (scic & SWSCI_SCIC_INDICATOR) {
272 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
273 return -EBUSY;
274 }
275
276 scic = function | SWSCI_SCIC_INDICATOR;
277
278 iowrite32(parm, &swsci->parm);
279 iowrite32(scic, &swsci->scic);
280
281 /* Ensure SCI event is selected and event trigger is cleared. */
282 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci);
283 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) {
284 pci_swsci |= PCI_SWSCI_SCISEL;
285 pci_swsci &= ~PCI_SWSCI_GSSCIE;
286 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
287 }
288
289 /* Use event trigger to tell bios to check the mail. */
290 pci_swsci |= PCI_SWSCI_GSSCIE;
291 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
292
293 /* Poll for the result. */
294#define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0)
295 if (wait_for(C, dslp)) {
296 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
297 return -ETIMEDOUT;
298 }
299
300 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
301 SWSCI_SCIC_EXIT_STATUS_SHIFT;
302
303 /* Note: scic == 0 is an error! */
304 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
305 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
306 return -EIO;
307 }
308
309 if (parm_out)
310 *parm_out = ioread32(&swsci->parm);
311
312 return 0;
313
314#undef C
315}
316
9c4b0a68
JN		 317#define DISPLAY_TYPE_CRT 0
318#define DISPLAY_TYPE_TV 1
319#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
320#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
321
322int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
323 bool enable)
324{
325 struct drm_device *dev = intel_encoder->base.dev;
326 u32 parm = 0;
327 u32 type = 0;
328 u32 port;
329
330 /* don't care about old stuff for now */
331 if (!HAS_DDI(dev))
332 return 0;
333
334 port = intel_ddi_get_encoder_port(intel_encoder);
335 if (port == PORT_E) {
336 port = 0;
337 } else {
338 parm |= 1 << port;
339 port++;
340 }
341
342 if (!enable)
343 parm |= 4 << 8;
344
345 switch (intel_encoder->type) {
346 case INTEL_OUTPUT_ANALOG:
347 type = DISPLAY_TYPE_CRT;
348 break;
349 case INTEL_OUTPUT_UNKNOWN:
350 case INTEL_OUTPUT_DISPLAYPORT:
351 case INTEL_OUTPUT_HDMI:
352 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
353 break;
354 case INTEL_OUTPUT_EDP:
355 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
356 break;
357 default:
358 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
359 intel_encoder->type);
360 return -EINVAL;
361 }
362
363 parm |= type << (16 + port * 3);
364
365 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
366}
367
ecbc5cf3
JN		 368static const struct {
369 pci_power_t pci_power_state;
370 u32 parm;
371} power_state_map[] = {
372 { PCI_D0, 0x00 },
373 { PCI_D1, 0x01 },
374 { PCI_D2, 0x02 },
375 { PCI_D3hot, 0x04 },
376 { PCI_D3cold, 0x04 },
377};
378
379int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
380{
381 int i;
382
383 if (!HAS_DDI(dev))
384 return 0;
385
386 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
387 if (state == power_state_map[i].pci_power_state)
388 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE,
389 power_state_map[i].parm, NULL);
390 }
391
392 return -EINVAL;
393}
394
8ee1c3db
MG		 395static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
396{
397 struct drm_i915_private *dev_priv = dev->dev_private;
c91c9f32 398 struct intel_connector *intel_connector;
5bc4418b 399 struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
8ee1c3db 400
749052fb
JN		 401 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
402
8ee1c3db 403 if (!(bclp & ASLE_BCLP_VALID))
507c1a45 404 return ASLC_BACKLIGHT_FAILED;
8ee1c3db
MG		 405
406 bclp &= ASLE_BCLP_MSK;
a9573556 407 if (bclp > 255)
507c1a45 408 return ASLC_BACKLIGHT_FAILED;
8ee1c3db 409
752aa88a 410 mutex_lock(&dev->mode_config.mutex);
c91c9f32 411
752aa88a 412 /*
c91c9f32
JN		 413 * Update backlight on all connectors that support backlight (usually
414 * only one).
752aa88a 415 */
540b5d02 416 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
dc5a4363
VS		 417 list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head)
418 intel_panel_set_backlight(intel_connector, bclp, 255);
cac6a5ae 419 iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv);
8ee1c3db 420
752aa88a
JB		 421 mutex_unlock(&dev->mode_config.mutex);
422
c91c9f32
JN		 423
424 return 0;
8ee1c3db
MG		 425}
426
427static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
428{
429 /* alsi is the current ALS reading in lux. 0 indicates below sensor
430 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
e93d440b 431 DRM_DEBUG_DRIVER("Illum is not supported\n");
507c1a45 432 return ASLC_ALS_ILLUM_FAILED;
8ee1c3db
MG		 433}
434
435static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
436{
e93d440b 437 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
507c1a45 438 return ASLC_PWM_FREQ_FAILED;
8ee1c3db
MG		 439}
440
441static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
442{
443 /* Panel fitting is currently controlled by the X code, so this is a
444 noop until modesetting support works fully */
e93d440b 445 DRM_DEBUG_DRIVER("Pfit is not supported\n");
507c1a45
PZ		 446 return ASLC_PFIT_FAILED;
447}
448
449static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot)
450{
451 DRM_DEBUG_DRIVER("SROT is not supported\n");
452 return ASLC_ROTATION_ANGLES_FAILED;
453}
454
455static u32 asle_set_button_array(struct drm_device *dev, u32 iuer)
456{
457 if (!iuer)
458 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
459 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
460 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
461 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
462 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
463 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
464 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
465 if (iuer & ASLE_IUER_WINDOWS_BTN)
466 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
467 if (iuer & ASLE_IUER_POWER_BTN)
468 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
469
470 return ASLC_BUTTON_ARRAY_FAILED;
471}
472
473static u32 asle_set_convertible(struct drm_device *dev, u32 iuer)
474{
475 if (iuer & ASLE_IUER_CONVERTIBLE)
476 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
477 else
478 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
479
480 return ASLC_CONVERTIBLE_FAILED;
481}
482
483static u32 asle_set_docking(struct drm_device *dev, u32 iuer)
484{
485 if (iuer & ASLE_IUER_DOCKING)
486 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
487 else
488 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
489
490 return ASLC_DOCKING_FAILED;
491}
492
493static u32 asle_isct_state(struct drm_device *dev)
494{
495 DRM_DEBUG_DRIVER("ISCT is not supported\n");
496 return ASLC_ISCT_STATE_FAILED;
8ee1c3db
MG		 497}
498
91a60f20 499static void asle_work(struct work_struct *work)
8ee1c3db 500{
91a60f20
JN		 501 struct intel_opregion *opregion =
502 container_of(work, struct intel_opregion, asle_work);
503 struct drm_i915_private *dev_priv =
504 container_of(opregion, struct drm_i915_private, opregion);
505 struct drm_device *dev = dev_priv->dev;
5bc4418b 506 struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
507c1a45
PZ		 507 u32 aslc_stat = 0;
508 u32 aslc_req;
8ee1c3db
MG		 509
510 if (!asle)
511 return;
512
507c1a45 513 aslc_req = ioread32(&asle->aslc);
8ee1c3db 514
507c1a45
PZ		 515 if (!(aslc_req & ASLC_REQ_MSK)) {
516 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
517 aslc_req);
8ee1c3db
MG		 518 return;
519 }
520
507c1a45
PZ		 521 if (aslc_req & ASLC_SET_ALS_ILLUM)
522 aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi));
523
524 if (aslc_req & ASLC_SET_BACKLIGHT)
525 aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
526
527 if (aslc_req & ASLC_SET_PFIT)
528 aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit));
529
530 if (aslc_req & ASLC_SET_PWM_FREQ)
531 aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb));
532
533 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
534 aslc_stat |= asle_set_supported_rotation_angles(dev,
535 ioread32(&asle->srot));
536
537 if (aslc_req & ASLC_BUTTON_ARRAY)
538 aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer));
8ee1c3db 539
507c1a45
PZ		 540 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
541 aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer));
8ee1c3db 542
507c1a45
PZ		 543 if (aslc_req & ASLC_DOCKING_INDICATOR)
544 aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer));
8ee1c3db 545
507c1a45
PZ		 546 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
547 aslc_stat |= asle_isct_state(dev);
8ee1c3db 548
507c1a45 549 iowrite32(aslc_stat, &asle->aslc);
8ee1c3db
MG		 550}
551
91a60f20
JN		 552void intel_opregion_asle_intr(struct drm_device *dev)
553{
554 struct drm_i915_private *dev_priv = dev->dev_private;
555
556 if (dev_priv->opregion.asle)
557 schedule_work(&dev_priv->opregion.asle_work);
558}
559
8ee1c3db
MG		 560#define ACPI_EV_DISPLAY_SWITCH (1<<0)
561#define ACPI_EV_LID (1<<1)
562#define ACPI_EV_DOCK (1<<2)
563
564static struct intel_opregion *system_opregion;
565
b358d0a6
HE		 566static int intel_opregion_video_event(struct notifier_block *nb,
567 unsigned long val, void *data)
8ee1c3db
MG		 568{
569 /* The only video events relevant to opregion are 0x80. These indicate
570 either a docking event, lid switch or display switch request. In
571 Linux, these are handled by the dock, button and video drivers.
f5a3d0c4 572 */
8ee1c3db 573
5bc4418b 574 struct opregion_acpi __iomem *acpi;
f5a3d0c4
MG		 575 struct acpi_bus_event *event = data;
576 int ret = NOTIFY_OK;
577
578 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
579 return NOTIFY_DONE;
8ee1c3db
MG		 580
581 if (!system_opregion)
582 return NOTIFY_DONE;
583
584 acpi = system_opregion->acpi;
f5a3d0c4 585
5bc4418b
BW		 586 if (event->type == 0x80 &&
587 (ioread32(&acpi->cevt) & 1) == 0)
f5a3d0c4
MG		 588 ret = NOTIFY_BAD;
589
5bc4418b 590 iowrite32(0, &acpi->csts);
8ee1c3db 591
f5a3d0c4 592 return ret;
8ee1c3db
MG		 593}
594
595static struct notifier_block intel_opregion_notifier = {
596 .notifier_call = intel_opregion_video_event,
597};
598
74a365b3
MG		 599/*
600 * Initialise the DIDL field in opregion. This passes a list of devices to
601 * the firmware. Values are defined by section B.4.2 of the ACPI specification
602 * (version 3)
603 */
604
605static void intel_didl_outputs(struct drm_device *dev)
606{
607 struct drm_i915_private *dev_priv = dev->dev_private;
608 struct intel_opregion *opregion = &dev_priv->opregion;
609 struct drm_connector *connector;
3143751f
ZR		 610 acpi_handle handle;
611 struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
612 unsigned long long device_id;
613 acpi_status status;
5bc4418b 614 u32 temp;
74a365b3
MG		 615 int i = 0;
616
3a83f992 617 handle = ACPI_HANDLE(&dev->pdev->dev);
7d37beaa 618 if (!handle || acpi_bus_get_device(handle, &acpi_dev))
3143751f
ZR		 619 return;
620
d4e1a692 621 if (acpi_is_video_device(handle))
3143751f
ZR		 622 acpi_video_bus = acpi_dev;
623 else {
624 list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
d4e1a692 625 if (acpi_is_video_device(acpi_cdev->handle)) {
3143751f
ZR		 626 acpi_video_bus = acpi_cdev;
627 break;
628 }
629 }
630 }
631
632 if (!acpi_video_bus) {
a70491cc 633 pr_warn("No ACPI video bus found\n");
3143751f
ZR		 634 return;
635 }
636
637 list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
638 if (i >= 8) {
0f4f7b57
DV		 639 dev_dbg(&dev->pdev->dev,
640 "More than 8 outputs detected via ACPI\n");
3143751f
ZR		 641 return;
642 }
643 status =
644 acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
645 NULL, &device_id);
646 if (ACPI_SUCCESS(status)) {
647 if (!device_id)
648 goto blind_set;
5bc4418b
BW		 649 iowrite32((u32)(device_id & 0x0f0f),
650 &opregion->acpi->didl[i]);
3143751f
ZR		 651 i++;
652 }
653 }
654
655end:
656 /* If fewer than 8 outputs, the list must be null terminated */
657 if (i < 8)
5bc4418b 658 iowrite32(0, &opregion->acpi->didl[i]);
3143751f
ZR		 659 return;
660
661blind_set:
662 i = 0;
74a365b3
MG		 663 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
664 int output_type = ACPI_OTHER_OUTPUT;
665 if (i >= 8) {
0f4f7b57
DV		 666 dev_dbg(&dev->pdev->dev,
667 "More than 8 outputs in connector list\n");
74a365b3
MG		 668 return;
669 }
670 switch (connector->connector_type) {
671 case DRM_MODE_CONNECTOR_VGA:
672 case DRM_MODE_CONNECTOR_DVIA:
673 output_type = ACPI_VGA_OUTPUT;
674 break;
675 case DRM_MODE_CONNECTOR_Composite:
676 case DRM_MODE_CONNECTOR_SVIDEO:
677 case DRM_MODE_CONNECTOR_Component:
678 case DRM_MODE_CONNECTOR_9PinDIN:
679 output_type = ACPI_TV_OUTPUT;
680 break;
681 case DRM_MODE_CONNECTOR_DVII:
682 case DRM_MODE_CONNECTOR_DVID:
683 case DRM_MODE_CONNECTOR_DisplayPort:
684 case DRM_MODE_CONNECTOR_HDMIA:
685 case DRM_MODE_CONNECTOR_HDMIB:
686 output_type = ACPI_DIGITAL_OUTPUT;
687 break;
688 case DRM_MODE_CONNECTOR_LVDS:
689 output_type = ACPI_LVDS_OUTPUT;
690 break;
691 }
5bc4418b
BW		 692 temp = ioread32(&opregion->acpi->didl[i]);
693 iowrite32(temp | (1<<31) | output_type | i,
694 &opregion->acpi->didl[i]);
74a365b3
MG		 695 i++;
696 }
3143751f 697 goto end;
74a365b3
MG		 698}
699
d627b62f
L		 700static void intel_setup_cadls(struct drm_device *dev)
701{
702 struct drm_i915_private *dev_priv = dev->dev_private;
703 struct intel_opregion *opregion = &dev_priv->opregion;
704 int i = 0;
705 u32 disp_id;
706
707 /* Initialize the CADL field by duplicating the DIDL values.
708 * Technically, this is not always correct as display outputs may exist,
709 * but not active. This initialization is necessary for some Clevo
710 * laptops that check this field before processing the brightness and
711 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
712 * there are less than eight devices. */
713 do {
714 disp_id = ioread32(&opregion->acpi->didl[i]);
715 iowrite32(disp_id, &opregion->acpi->cadl[i]);
716 } while (++i < 8 && disp_id != 0);
717}
718
44834a67
CW		 719void intel_opregion_init(struct drm_device *dev)
720{
721 struct drm_i915_private *dev_priv = dev->dev_private;
722 struct intel_opregion *opregion = &dev_priv->opregion;
723
724 if (!opregion->header)
725 return;
726
727 if (opregion->acpi) {
d627b62f 728 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
44834a67 729 intel_didl_outputs(dev);
d627b62f
L		 730 intel_setup_cadls(dev);
731 }
44834a67
CW		 732
733 /* Notify BIOS we are ready to handle ACPI video ext notifs.
734 * Right now, all the events are handled by the ACPI video module.
735 * We don't actually need to do anything with them. */
5bc4418b
BW		 736 iowrite32(0, &opregion->acpi->csts);
737 iowrite32(1, &opregion->acpi->drdy);
44834a67
CW		 738
739 system_opregion = opregion;
740 register_acpi_notifier(&intel_opregion_notifier);
741 }
742
68bca4b0 743 if (opregion->asle) {
68bca4b0
JN		 744 iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche);
745 iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy);
746 }
44834a67
CW		 747}
748
749void intel_opregion_fini(struct drm_device *dev)
750{
751 struct drm_i915_private *dev_priv = dev->dev_private;
752 struct intel_opregion *opregion = &dev_priv->opregion;
753
754 if (!opregion->header)
755 return;
756
68bca4b0
JN		 757 if (opregion->asle)
758 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
759
91a60f20
JN		 760 cancel_work_sync(&dev_priv->opregion.asle_work);
761
44834a67 762 if (opregion->acpi) {
5bc4418b 763 iowrite32(0, &opregion->acpi->drdy);
44834a67
CW		 764
765 system_opregion = NULL;
766 unregister_acpi_notifier(&intel_opregion_notifier);
767 }
768
769 /* just clear all opregion memory pointers now */
770 iounmap(opregion->header);
771 opregion->header = NULL;
772 opregion->acpi = NULL;
773 opregion->swsci = NULL;
774 opregion->asle = NULL;
775 opregion->vbt = NULL;
794a79a6 776 opregion->lid_state = NULL;
44834a67 777}
ebde53c7
JN		 778
779static void swsci_setup(struct drm_device *dev)
780{
781 struct drm_i915_private *dev_priv = dev->dev_private;
782 struct intel_opregion *opregion = &dev_priv->opregion;
783 bool requested_callbacks = false;
784 u32 tmp;
785
786 /* Sub-function code 0 is okay, let's allow them. */
787 opregion->swsci_gbda_sub_functions = 1;
788 opregion->swsci_sbcb_sub_functions = 1;
789
790 /* We use GBDA to ask for supported GBDA calls. */
791 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
792 /* make the bits match the sub-function codes */
793 tmp <<= 1;
794 opregion->swsci_gbda_sub_functions |= tmp;
795 }
796
797 /*
798 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
799 * must not call interfaces that are not specifically requested by the
800 * bios.
801 */
802 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
803 /* here, the bits already match sub-function codes */
804 opregion->swsci_sbcb_sub_functions |= tmp;
805 requested_callbacks = true;
806 }
807
808 /*
809 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
810 * the callback is _requested_. But we still can't call interfaces that
811 * are not requested.
812 */
813 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
814 /* make the bits match the sub-function codes */
815 u32 low = tmp & 0x7ff;
816 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
817 tmp = (high << 4) | (low << 1) | 1;
818
819 /* best guess what to do with supported wrt requested */
820 if (requested_callbacks) {
821 u32 req = opregion->swsci_sbcb_sub_functions;
822 if ((req & tmp) != req)
823 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
824 /* XXX: for now, trust the requested callbacks */
825 /* opregion->swsci_sbcb_sub_functions &= tmp; */
826 } else {
827 opregion->swsci_sbcb_sub_functions |= tmp;
828 }
829 }
830
831 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
832 opregion->swsci_gbda_sub_functions,
833 opregion->swsci_sbcb_sub_functions);
834}
835#else /* CONFIG_ACPI */
836static inline void swsci_setup(struct drm_device *dev) {}
837#endif /* CONFIG_ACPI */
44834a67
CW		 838
839int intel_opregion_setup(struct drm_device *dev)
8ee1c3db
MG		 840{
841 struct drm_i915_private *dev_priv = dev->dev_private;
842 struct intel_opregion *opregion = &dev_priv->opregion;
5bc4418b 843 void __iomem *base;
8ee1c3db 844 u32 asls, mboxes;
5bc4418b 845 char buf[sizeof(OPREGION_SIGNATURE)];
8ee1c3db
MG		 846 int err = 0;
847
848 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
44d98a61 849 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
8ee1c3db 850 if (asls == 0) {
44d98a61 851 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
8ee1c3db
MG		 852 return -ENOTSUPP;
853 }
854
1dca220b 855#ifdef CONFIG_ACPI
91a60f20 856 INIT_WORK(&opregion->asle_work, asle_work);
1dca220b 857#endif
91a60f20 858
b705120e 859 base = acpi_os_ioremap(asls, OPREGION_SIZE);
8ee1c3db
MG		 860 if (!base)
861 return -ENOMEM;
862
5bc4418b
BW		 863 memcpy_fromio(buf, base, sizeof(buf));
864
865 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
44d98a61 866 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
8ee1c3db
MG		 867 err = -EINVAL;
868 goto err_out;
869 }
44834a67
CW		 870 opregion->header = base;
871 opregion->vbt = base + OPREGION_VBT_OFFSET;
8ee1c3db 872
82d3c90c 873 opregion->lid_state = base + ACPI_CLID;
01fe9dbd 874
5bc4418b 875 mboxes = ioread32(&opregion->header->mboxes);
8ee1c3db 876 if (mboxes & MBOX_ACPI) {
44d98a61 877 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
8ee1c3db 878 opregion->acpi = base + OPREGION_ACPI_OFFSET;
8ee1c3db 879 }
8ee1c3db
MG		 880
881 if (mboxes & MBOX_SWSCI) {
44d98a61 882 DRM_DEBUG_DRIVER("SWSCI supported\n");
8ee1c3db 883 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
ebde53c7 884 swsci_setup(dev);
8ee1c3db
MG		 885 }
886 if (mboxes & MBOX_ASLE) {
44d98a61 887 DRM_DEBUG_DRIVER("ASLE supported\n");
8ee1c3db 888 opregion->asle = base + OPREGION_ASLE_OFFSET;
68bca4b0
JN		 889
890 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
8ee1c3db
MG		 891 }
892
8ee1c3db
MG		 893 return 0;
894
895err_out:
30c56660 896 iounmap(base);
8ee1c3db
MG		 897 return err;
898}
Linux kernel - Deliverables
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