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drm/i915: Fix pre-CTG vblank counter
[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>
b705120e 31#include <linux/acpi_io.h>
74a365b3 32#include <acpi/video.h>
8ee1c3db 33
760285e7
DH		 34#include <drm/drmP.h>
35#include <drm/i915_drm.h>
8ee1c3db 36#include "i915_drv.h"
a9573556 37#include "intel_drv.h"
8ee1c3db 38
ebde53c7
JN		 39#define PCI_ASLE 0xe4
40#define PCI_ASLS 0xfc
41#define PCI_SWSCI 0xe8
42#define PCI_SWSCI_SCISEL (1 << 15)
43#define PCI_SWSCI_GSSCIE (1 << 0)
8ee1c3db 44
8ee1c3db
MG		 45#define OPREGION_HEADER_OFFSET 0
46#define OPREGION_ACPI_OFFSET 0x100
82d3c90c
CW		 47#define ACPI_CLID 0x01ac /* current lid state indicator */
48#define ACPI_CDCK 0x01b0 /* current docking state indicator */
8ee1c3db
MG		 49#define OPREGION_SWSCI_OFFSET 0x200
50#define OPREGION_ASLE_OFFSET 0x300
44834a67 51#define OPREGION_VBT_OFFSET 0x400
8ee1c3db
MG		 52
53#define OPREGION_SIGNATURE "IntelGraphicsMem"
54#define MBOX_ACPI (1<<0)
55#define MBOX_SWSCI (1<<1)
56#define MBOX_ASLE (1<<2)
57
58struct opregion_header {
0206e353
AJ		 59 u8 signature[16];
60 u32 size;
61 u32 opregion_ver;
62 u8 bios_ver[32];
63 u8 vbios_ver[16];
64 u8 driver_ver[16];
65 u32 mboxes;
66 u8 reserved[164];
8ee1c3db
MG		 67} __attribute__((packed));
68
69/* OpRegion mailbox #1: public ACPI methods */
70struct opregion_acpi {
0206e353
AJ		 71 u32 drdy; /* driver readiness */
72 u32 csts; /* notification status */
73 u32 cevt; /* current event */
74 u8 rsvd1[20];
75 u32 didl[8]; /* supported display devices ID list */
76 u32 cpdl[8]; /* currently presented display list */
77 u32 cadl[8]; /* currently active display list */
78 u32 nadl[8]; /* next active devices list */
79 u32 aslp; /* ASL sleep time-out */
80 u32 tidx; /* toggle table index */
81 u32 chpd; /* current hotplug enable indicator */
82 u32 clid; /* current lid state*/
83 u32 cdck; /* current docking state */
84 u32 sxsw; /* Sx state resume */
85 u32 evts; /* ASL supported events */
86 u32 cnot; /* current OS notification */
87 u32 nrdy; /* driver status */
88 u8 rsvd2[60];
8ee1c3db
MG		 89} __attribute__((packed));
90
91/* OpRegion mailbox #2: SWSCI */
92struct opregion_swsci {
0206e353
AJ		 93 u32 scic; /* SWSCI command|status|data */
94 u32 parm; /* command parameters */
95 u32 dslp; /* driver sleep time-out */
96 u8 rsvd[244];
8ee1c3db
MG		 97} __attribute__((packed));
98
99/* OpRegion mailbox #3: ASLE */
100struct opregion_asle {
0206e353
AJ		 101 u32 ardy; /* driver readiness */
102 u32 aslc; /* ASLE interrupt command */
103 u32 tche; /* technology enabled indicator */
104 u32 alsi; /* current ALS illuminance reading */
105 u32 bclp; /* backlight brightness to set */
106 u32 pfit; /* panel fitting state */
107 u32 cblv; /* current brightness level */
108 u16 bclm[20]; /* backlight level duty cycle mapping table */
109 u32 cpfm; /* current panel fitting mode */
110 u32 epfm; /* enabled panel fitting modes */
111 u8 plut[74]; /* panel LUT and identifier */
112 u32 pfmb; /* PWM freq and min brightness */
507c1a45
PZ		 113 u32 cddv; /* color correction default values */
114 u32 pcft; /* power conservation features */
115 u32 srot; /* supported rotation angles */
116 u32 iuer; /* IUER events */
117 u8 rsvd[86];
8ee1c3db
MG		 118} __attribute__((packed));
119
68bca4b0
JN		 120/* Driver readiness indicator */
121#define ASLE_ARDY_READY (1 << 0)
122#define ASLE_ARDY_NOT_READY (0 << 0)
123
507c1a45
PZ		 124/* ASLE Interrupt Command (ASLC) bits */
125#define ASLC_SET_ALS_ILLUM (1 << 0)
126#define ASLC_SET_BACKLIGHT (1 << 1)
127#define ASLC_SET_PFIT (1 << 2)
128#define ASLC_SET_PWM_FREQ (1 << 3)
129#define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
130#define ASLC_BUTTON_ARRAY (1 << 5)
131#define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
132#define ASLC_DOCKING_INDICATOR (1 << 7)
133#define ASLC_ISCT_STATE_CHANGE (1 << 8)
134#define ASLC_REQ_MSK 0x1ff
135/* response bits */
136#define ASLC_ALS_ILLUM_FAILED (1 << 10)
137#define ASLC_BACKLIGHT_FAILED (1 << 12)
138#define ASLC_PFIT_FAILED (1 << 14)
139#define ASLC_PWM_FREQ_FAILED (1 << 16)
140#define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
141#define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
142#define ASLC_CONVERTIBLE_FAILED (1 << 22)
143#define ASLC_DOCKING_FAILED (1 << 24)
144#define ASLC_ISCT_STATE_FAILED (1 << 26)
8ee1c3db 145
f599cc29
JN		 146/* Technology enabled indicator */
147#define ASLE_TCHE_ALS_EN (1 << 0)
148#define ASLE_TCHE_BLC_EN (1 << 1)
149#define ASLE_TCHE_PFIT_EN (1 << 2)
150#define ASLE_TCHE_PFMB_EN (1 << 3)
151
8ee1c3db
MG		 152/* ASLE backlight brightness to set */
153#define ASLE_BCLP_VALID (1<<31)
154#define ASLE_BCLP_MSK (~(1<<31))
155
156/* ASLE panel fitting request */
157#define ASLE_PFIT_VALID (1<<31)
158#define ASLE_PFIT_CENTER (1<<0)
159#define ASLE_PFIT_STRETCH_TEXT (1<<1)
160#define ASLE_PFIT_STRETCH_GFX (1<<2)
161
162/* PWM frequency and minimum brightness */
163#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
164#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
165#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
166#define ASLE_PFMB_PWM_VALID (1<<31)
167
168#define ASLE_CBLV_VALID (1<<31)
169
507c1a45
PZ		 170/* IUER */
171#define ASLE_IUER_DOCKING (1 << 7)
172#define ASLE_IUER_CONVERTIBLE (1 << 6)
173#define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
174#define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
175#define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
176#define ASLE_IUER_WINDOWS_BTN (1 << 1)
177#define ASLE_IUER_POWER_BTN (1 << 0)
178
ebde53c7
JN		 179/* Software System Control Interrupt (SWSCI) */
180#define SWSCI_SCIC_INDICATOR (1 << 0)
181#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
182#define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
183#define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
184#define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
185#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
186#define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
187#define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
188#define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
189#define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
190
191#define SWSCI_FUNCTION_CODE(main, sub) \
192 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
193 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
194
195/* SWSCI: Get BIOS Data (GBDA) */
196#define SWSCI_GBDA 4
197#define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
198#define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
199#define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
200#define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
201#define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
202#define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
203#define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
204
205/* SWSCI: System BIOS Callbacks (SBCB) */
206#define SWSCI_SBCB 6
207#define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
208#define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
209#define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
210#define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
211#define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
212#define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
213#define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
214#define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
215#define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
216#define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
217#define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
218#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
219#define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
220#define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
221#define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
222#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
223
74a365b3
MG		 224#define ACPI_OTHER_OUTPUT (0<<8)
225#define ACPI_VGA_OUTPUT (1<<8)
226#define ACPI_TV_OUTPUT (2<<8)
227#define ACPI_DIGITAL_OUTPUT (3<<8)
228#define ACPI_LVDS_OUTPUT (4<<8)
229
44834a67 230#ifdef CONFIG_ACPI
ebde53c7
JN		 231static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
232{
233 struct drm_i915_private *dev_priv = dev->dev_private;
234 struct opregion_swsci __iomem *swsci = dev_priv->opregion.swsci;
235 u32 main_function, sub_function, scic;
236 u16 pci_swsci;
237 u32 dslp;
238
239 if (!swsci)
240 return -ENODEV;
241
242 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
243 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
244 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
245 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
246
247 /* Check if we can call the function. See swsci_setup for details. */
248 if (main_function == SWSCI_SBCB) {
249 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
250 (1 << sub_function)) == 0)
251 return -EINVAL;
252 } else if (main_function == SWSCI_GBDA) {
253 if ((dev_priv->opregion.swsci_gbda_sub_functions &
254 (1 << sub_function)) == 0)
255 return -EINVAL;
256 }
257
258 /* Driver sleep timeout in ms. */
259 dslp = ioread32(&swsci->dslp);
260 if (!dslp) {
4994aa8c
PZ		 261 /* The spec says 2ms should be the default, but it's too small
262 * for some machines. */
263 dslp = 50;
ebde53c7
JN		 264 } else if (dslp > 500) {
265 /* Hey bios, trust must be earned. */
266 WARN_ONCE(1, "excessive driver sleep timeout (DSPL) %u\n", dslp);
267 dslp = 500;
268 }
269
270 /* The spec tells us to do this, but we are the only user... */
271 scic = ioread32(&swsci->scic);
272 if (scic & SWSCI_SCIC_INDICATOR) {
273 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
274 return -EBUSY;
275 }
276
277 scic = function | SWSCI_SCIC_INDICATOR;
278
279 iowrite32(parm, &swsci->parm);
280 iowrite32(scic, &swsci->scic);
281
282 /* Ensure SCI event is selected and event trigger is cleared. */
283 pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci);
284 if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) {
285 pci_swsci |= PCI_SWSCI_SCISEL;
286 pci_swsci &= ~PCI_SWSCI_GSSCIE;
287 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
288 }
289
290 /* Use event trigger to tell bios to check the mail. */
291 pci_swsci |= PCI_SWSCI_GSSCIE;
292 pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
293
294 /* Poll for the result. */
295#define C (((scic = ioread32(&swsci->scic)) & SWSCI_SCIC_INDICATOR) == 0)
296 if (wait_for(C, dslp)) {
297 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
298 return -ETIMEDOUT;
299 }
300
301 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
302 SWSCI_SCIC_EXIT_STATUS_SHIFT;
303
304 /* Note: scic == 0 is an error! */
305 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
306 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
307 return -EIO;
308 }
309
310 if (parm_out)
311 *parm_out = ioread32(&swsci->parm);
312
313 return 0;
314
315#undef C
316}
317
9c4b0a68
JN		 318#define DISPLAY_TYPE_CRT 0
319#define DISPLAY_TYPE_TV 1
320#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
321#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
322
323int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
324 bool enable)
325{
326 struct drm_device *dev = intel_encoder->base.dev;
327 u32 parm = 0;
328 u32 type = 0;
329 u32 port;
330
331 /* don't care about old stuff for now */
332 if (!HAS_DDI(dev))
333 return 0;
334
335 port = intel_ddi_get_encoder_port(intel_encoder);
336 if (port == PORT_E) {
337 port = 0;
338 } else {
339 parm |= 1 << port;
340 port++;
341 }
342
343 if (!enable)
344 parm |= 4 << 8;
345
346 switch (intel_encoder->type) {
347 case INTEL_OUTPUT_ANALOG:
348 type = DISPLAY_TYPE_CRT;
349 break;
350 case INTEL_OUTPUT_UNKNOWN:
351 case INTEL_OUTPUT_DISPLAYPORT:
352 case INTEL_OUTPUT_HDMI:
353 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
354 break;
355 case INTEL_OUTPUT_EDP:
356 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
357 break;
358 default:
359 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
360 intel_encoder->type);
361 return -EINVAL;
362 }
363
364 parm |= type << (16 + port * 3);
365
366 return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
367}
368
ecbc5cf3
JN		 369static const struct {
370 pci_power_t pci_power_state;
371 u32 parm;
372} power_state_map[] = {
373 { PCI_D0, 0x00 },
374 { PCI_D1, 0x01 },
375 { PCI_D2, 0x02 },
376 { PCI_D3hot, 0x04 },
377 { PCI_D3cold, 0x04 },
378};
379
380int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
381{
382 int i;
383
384 if (!HAS_DDI(dev))
385 return 0;
386
387 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
388 if (state == power_state_map[i].pci_power_state)
389 return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE,
390 power_state_map[i].parm, NULL);
391 }
392
393 return -EINVAL;
394}
395
8ee1c3db
MG		 396static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
397{
398 struct drm_i915_private *dev_priv = dev->dev_private;
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
d6540632 410 intel_panel_set_backlight(dev, bclp, 255);
cac6a5ae 411 iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv);
8ee1c3db
MG		 412
413 return 0;
414}
415
416static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
417{
418 /* alsi is the current ALS reading in lux. 0 indicates below sensor
419 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
e93d440b 420 DRM_DEBUG_DRIVER("Illum is not supported\n");
507c1a45 421 return ASLC_ALS_ILLUM_FAILED;
8ee1c3db
MG		 422}
423
424static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
425{
e93d440b 426 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
507c1a45 427 return ASLC_PWM_FREQ_FAILED;
8ee1c3db
MG		 428}
429
430static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
431{
432 /* Panel fitting is currently controlled by the X code, so this is a
433 noop until modesetting support works fully */
e93d440b 434 DRM_DEBUG_DRIVER("Pfit is not supported\n");
507c1a45
PZ		 435 return ASLC_PFIT_FAILED;
436}
437
438static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot)
439{
440 DRM_DEBUG_DRIVER("SROT is not supported\n");
441 return ASLC_ROTATION_ANGLES_FAILED;
442}
443
444static u32 asle_set_button_array(struct drm_device *dev, u32 iuer)
445{
446 if (!iuer)
447 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
448 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
449 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
450 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
451 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
452 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
453 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
454 if (iuer & ASLE_IUER_WINDOWS_BTN)
455 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
456 if (iuer & ASLE_IUER_POWER_BTN)
457 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
458
459 return ASLC_BUTTON_ARRAY_FAILED;
460}
461
462static u32 asle_set_convertible(struct drm_device *dev, u32 iuer)
463{
464 if (iuer & ASLE_IUER_CONVERTIBLE)
465 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
466 else
467 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
468
469 return ASLC_CONVERTIBLE_FAILED;
470}
471
472static u32 asle_set_docking(struct drm_device *dev, u32 iuer)
473{
474 if (iuer & ASLE_IUER_DOCKING)
475 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
476 else
477 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
478
479 return ASLC_DOCKING_FAILED;
480}
481
482static u32 asle_isct_state(struct drm_device *dev)
483{
484 DRM_DEBUG_DRIVER("ISCT is not supported\n");
485 return ASLC_ISCT_STATE_FAILED;
8ee1c3db
MG		 486}
487
3b617967 488void intel_opregion_asle_intr(struct drm_device *dev)
8ee1c3db
MG		 489{
490 struct drm_i915_private *dev_priv = dev->dev_private;
5bc4418b 491 struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
507c1a45
PZ		 492 u32 aslc_stat = 0;
493 u32 aslc_req;
8ee1c3db
MG		 494
495 if (!asle)
496 return;
497
507c1a45 498 aslc_req = ioread32(&asle->aslc);
8ee1c3db 499
507c1a45
PZ		 500 if (!(aslc_req & ASLC_REQ_MSK)) {
501 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
502 aslc_req);
8ee1c3db
MG		 503 return;
504 }
505
507c1a45
PZ		 506 if (aslc_req & ASLC_SET_ALS_ILLUM)
507 aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi));
508
509 if (aslc_req & ASLC_SET_BACKLIGHT)
510 aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
511
512 if (aslc_req & ASLC_SET_PFIT)
513 aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit));
514
515 if (aslc_req & ASLC_SET_PWM_FREQ)
516 aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb));
517
518 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
519 aslc_stat |= asle_set_supported_rotation_angles(dev,
520 ioread32(&asle->srot));
521
522 if (aslc_req & ASLC_BUTTON_ARRAY)
523 aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer));
8ee1c3db 524
507c1a45
PZ		 525 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
526 aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer));
8ee1c3db 527
507c1a45
PZ		 528 if (aslc_req & ASLC_DOCKING_INDICATOR)
529 aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer));
8ee1c3db 530
507c1a45
PZ		 531 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
532 aslc_stat |= asle_isct_state(dev);
8ee1c3db 533
507c1a45 534 iowrite32(aslc_stat, &asle->aslc);
8ee1c3db
MG		 535}
536
8ee1c3db
MG		 537#define ACPI_EV_DISPLAY_SWITCH (1<<0)
538#define ACPI_EV_LID (1<<1)
539#define ACPI_EV_DOCK (1<<2)
540
541static struct intel_opregion *system_opregion;
542
b358d0a6
HE		 543static int intel_opregion_video_event(struct notifier_block *nb,
544 unsigned long val, void *data)
8ee1c3db
MG		 545{
546 /* The only video events relevant to opregion are 0x80. These indicate
547 either a docking event, lid switch or display switch request. In
548 Linux, these are handled by the dock, button and video drivers.
f5a3d0c4 549 */
8ee1c3db 550
5bc4418b 551 struct opregion_acpi __iomem *acpi;
f5a3d0c4
MG		 552 struct acpi_bus_event *event = data;
553 int ret = NOTIFY_OK;
554
555 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
556 return NOTIFY_DONE;
8ee1c3db
MG		 557
558 if (!system_opregion)
559 return NOTIFY_DONE;
560
561 acpi = system_opregion->acpi;
f5a3d0c4 562
5bc4418b
BW		 563 if (event->type == 0x80 &&
564 (ioread32(&acpi->cevt) & 1) == 0)
f5a3d0c4
MG		 565 ret = NOTIFY_BAD;
566
5bc4418b 567 iowrite32(0, &acpi->csts);
8ee1c3db 568
f5a3d0c4 569 return ret;
8ee1c3db
MG		 570}
571
572static struct notifier_block intel_opregion_notifier = {
573 .notifier_call = intel_opregion_video_event,
574};
575
74a365b3
MG		 576/*
577 * Initialise the DIDL field in opregion. This passes a list of devices to
578 * the firmware. Values are defined by section B.4.2 of the ACPI specification
579 * (version 3)
580 */
581
582static void intel_didl_outputs(struct drm_device *dev)
583{
584 struct drm_i915_private *dev_priv = dev->dev_private;
585 struct intel_opregion *opregion = &dev_priv->opregion;
586 struct drm_connector *connector;
3143751f
ZR		 587 acpi_handle handle;
588 struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
589 unsigned long long device_id;
590 acpi_status status;
5bc4418b 591 u32 temp;
74a365b3
MG		 592 int i = 0;
593
3143751f 594 handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev);
7d37beaa 595 if (!handle || acpi_bus_get_device(handle, &acpi_dev))
3143751f
ZR		 596 return;
597
d4e1a692 598 if (acpi_is_video_device(handle))
3143751f
ZR		 599 acpi_video_bus = acpi_dev;
600 else {
601 list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
d4e1a692 602 if (acpi_is_video_device(acpi_cdev->handle)) {
3143751f
ZR		 603 acpi_video_bus = acpi_cdev;
604 break;
605 }
606 }
607 }
608
609 if (!acpi_video_bus) {
a70491cc 610 pr_warn("No ACPI video bus found\n");
3143751f
ZR		 611 return;
612 }
613
614 list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
615 if (i >= 8) {
0f4f7b57
DV		 616 dev_dbg(&dev->pdev->dev,
617 "More than 8 outputs detected via ACPI\n");
3143751f
ZR		 618 return;
619 }
620 status =
621 acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
622 NULL, &device_id);
623 if (ACPI_SUCCESS(status)) {
624 if (!device_id)
625 goto blind_set;
5bc4418b
BW		 626 iowrite32((u32)(device_id & 0x0f0f),
627 &opregion->acpi->didl[i]);
3143751f
ZR		 628 i++;
629 }
630 }
631
632end:
633 /* If fewer than 8 outputs, the list must be null terminated */
634 if (i < 8)
5bc4418b 635 iowrite32(0, &opregion->acpi->didl[i]);
3143751f
ZR		 636 return;
637
638blind_set:
639 i = 0;
74a365b3
MG		 640 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
641 int output_type = ACPI_OTHER_OUTPUT;
642 if (i >= 8) {
0f4f7b57
DV		 643 dev_dbg(&dev->pdev->dev,
644 "More than 8 outputs in connector list\n");
74a365b3
MG		 645 return;
646 }
647 switch (connector->connector_type) {
648 case DRM_MODE_CONNECTOR_VGA:
649 case DRM_MODE_CONNECTOR_DVIA:
650 output_type = ACPI_VGA_OUTPUT;
651 break;
652 case DRM_MODE_CONNECTOR_Composite:
653 case DRM_MODE_CONNECTOR_SVIDEO:
654 case DRM_MODE_CONNECTOR_Component:
655 case DRM_MODE_CONNECTOR_9PinDIN:
656 output_type = ACPI_TV_OUTPUT;
657 break;
658 case DRM_MODE_CONNECTOR_DVII:
659 case DRM_MODE_CONNECTOR_DVID:
660 case DRM_MODE_CONNECTOR_DisplayPort:
661 case DRM_MODE_CONNECTOR_HDMIA:
662 case DRM_MODE_CONNECTOR_HDMIB:
663 output_type = ACPI_DIGITAL_OUTPUT;
664 break;
665 case DRM_MODE_CONNECTOR_LVDS:
666 output_type = ACPI_LVDS_OUTPUT;
667 break;
668 }
5bc4418b
BW		 669 temp = ioread32(&opregion->acpi->didl[i]);
670 iowrite32(temp | (1<<31) | output_type | i,
671 &opregion->acpi->didl[i]);
74a365b3
MG		 672 i++;
673 }
3143751f 674 goto end;
74a365b3
MG		 675}
676
d627b62f
L		 677static void intel_setup_cadls(struct drm_device *dev)
678{
679 struct drm_i915_private *dev_priv = dev->dev_private;
680 struct intel_opregion *opregion = &dev_priv->opregion;
681 int i = 0;
682 u32 disp_id;
683
684 /* Initialize the CADL field by duplicating the DIDL values.
685 * Technically, this is not always correct as display outputs may exist,
686 * but not active. This initialization is necessary for some Clevo
687 * laptops that check this field before processing the brightness and
688 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
689 * there are less than eight devices. */
690 do {
691 disp_id = ioread32(&opregion->acpi->didl[i]);
692 iowrite32(disp_id, &opregion->acpi->cadl[i]);
693 } while (++i < 8 && disp_id != 0);
694}
695
44834a67
CW		 696void intel_opregion_init(struct drm_device *dev)
697{
698 struct drm_i915_private *dev_priv = dev->dev_private;
699 struct intel_opregion *opregion = &dev_priv->opregion;
700
701 if (!opregion->header)
702 return;
703
704 if (opregion->acpi) {
d627b62f 705 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
44834a67 706 intel_didl_outputs(dev);
d627b62f
L		 707 intel_setup_cadls(dev);
708 }
44834a67
CW		 709
710 /* Notify BIOS we are ready to handle ACPI video ext notifs.
711 * Right now, all the events are handled by the ACPI video module.
712 * We don't actually need to do anything with them. */
5bc4418b
BW		 713 iowrite32(0, &opregion->acpi->csts);
714 iowrite32(1, &opregion->acpi->drdy);
44834a67
CW		 715
716 system_opregion = opregion;
717 register_acpi_notifier(&intel_opregion_notifier);
718 }
719
68bca4b0 720 if (opregion->asle) {
68bca4b0
JN		 721 iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche);
722 iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy);
723 }
44834a67
CW		 724}
725
726void intel_opregion_fini(struct drm_device *dev)
727{
728 struct drm_i915_private *dev_priv = dev->dev_private;
729 struct intel_opregion *opregion = &dev_priv->opregion;
730
731 if (!opregion->header)
732 return;
733
68bca4b0
JN		 734 if (opregion->asle)
735 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
736
44834a67 737 if (opregion->acpi) {
5bc4418b 738 iowrite32(0, &opregion->acpi->drdy);
44834a67
CW		 739
740 system_opregion = NULL;
741 unregister_acpi_notifier(&intel_opregion_notifier);
742 }
743
744 /* just clear all opregion memory pointers now */
745 iounmap(opregion->header);
746 opregion->header = NULL;
747 opregion->acpi = NULL;
748 opregion->swsci = NULL;
749 opregion->asle = NULL;
750 opregion->vbt = NULL;
794a79a6 751 opregion->lid_state = NULL;
44834a67 752}
ebde53c7
JN		 753
754static void swsci_setup(struct drm_device *dev)
755{
756 struct drm_i915_private *dev_priv = dev->dev_private;
757 struct intel_opregion *opregion = &dev_priv->opregion;
758 bool requested_callbacks = false;
759 u32 tmp;
760
761 /* Sub-function code 0 is okay, let's allow them. */
762 opregion->swsci_gbda_sub_functions = 1;
763 opregion->swsci_sbcb_sub_functions = 1;
764
765 /* We use GBDA to ask for supported GBDA calls. */
766 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
767 /* make the bits match the sub-function codes */
768 tmp <<= 1;
769 opregion->swsci_gbda_sub_functions |= tmp;
770 }
771
772 /*
773 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
774 * must not call interfaces that are not specifically requested by the
775 * bios.
776 */
777 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
778 /* here, the bits already match sub-function codes */
779 opregion->swsci_sbcb_sub_functions |= tmp;
780 requested_callbacks = true;
781 }
782
783 /*
784 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
785 * the callback is _requested_. But we still can't call interfaces that
786 * are not requested.
787 */
788 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
789 /* make the bits match the sub-function codes */
790 u32 low = tmp & 0x7ff;
791 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
792 tmp = (high << 4) | (low << 1) | 1;
793
794 /* best guess what to do with supported wrt requested */
795 if (requested_callbacks) {
796 u32 req = opregion->swsci_sbcb_sub_functions;
797 if ((req & tmp) != req)
798 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
799 /* XXX: for now, trust the requested callbacks */
800 /* opregion->swsci_sbcb_sub_functions &= tmp; */
801 } else {
802 opregion->swsci_sbcb_sub_functions |= tmp;
803 }
804 }
805
806 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
807 opregion->swsci_gbda_sub_functions,
808 opregion->swsci_sbcb_sub_functions);
809}
810#else /* CONFIG_ACPI */
811static inline void swsci_setup(struct drm_device *dev) {}
812#endif /* CONFIG_ACPI */
44834a67
CW		 813
814int intel_opregion_setup(struct drm_device *dev)
8ee1c3db
MG		 815{
816 struct drm_i915_private *dev_priv = dev->dev_private;
817 struct intel_opregion *opregion = &dev_priv->opregion;
5bc4418b 818 void __iomem *base;
8ee1c3db 819 u32 asls, mboxes;
5bc4418b 820 char buf[sizeof(OPREGION_SIGNATURE)];
8ee1c3db
MG		 821 int err = 0;
822
823 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
44d98a61 824 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
8ee1c3db 825 if (asls == 0) {
44d98a61 826 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
8ee1c3db
MG		 827 return -ENOTSUPP;
828 }
829
b705120e 830 base = acpi_os_ioremap(asls, OPREGION_SIZE);
8ee1c3db
MG		 831 if (!base)
832 return -ENOMEM;
833
5bc4418b
BW		 834 memcpy_fromio(buf, base, sizeof(buf));
835
836 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
44d98a61 837 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
8ee1c3db
MG		 838 err = -EINVAL;
839 goto err_out;
840 }
44834a67
CW		 841 opregion->header = base;
842 opregion->vbt = base + OPREGION_VBT_OFFSET;
8ee1c3db 843
82d3c90c 844 opregion->lid_state = base + ACPI_CLID;
01fe9dbd 845
5bc4418b 846 mboxes = ioread32(&opregion->header->mboxes);
8ee1c3db 847 if (mboxes & MBOX_ACPI) {
44d98a61 848 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
8ee1c3db 849 opregion->acpi = base + OPREGION_ACPI_OFFSET;
8ee1c3db 850 }
8ee1c3db
MG		 851
852 if (mboxes & MBOX_SWSCI) {
44d98a61 853 DRM_DEBUG_DRIVER("SWSCI supported\n");
8ee1c3db 854 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
ebde53c7 855 swsci_setup(dev);
8ee1c3db
MG		 856 }
857 if (mboxes & MBOX_ASLE) {
44d98a61 858 DRM_DEBUG_DRIVER("ASLE supported\n");
8ee1c3db 859 opregion->asle = base + OPREGION_ASLE_OFFSET;
68bca4b0
JN		 860
861 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
8ee1c3db
MG		 862 }
863
8ee1c3db
MG		 864 return 0;
865
866err_out:
30c56660 867 iounmap(base);
8ee1c3db
MG		 868 return err;
869}
Linux kernel - Deliverables
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