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drm/i915: make backlight info per-connector
[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;
752aa88a
JB		 399 struct drm_encoder *encoder;
400 struct drm_connector *connector;
401 struct intel_connector *intel_connector = NULL;
402 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[0];
5bc4418b 403 struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
752aa88a
JB		 404 u32 ret = 0;
405 bool found = false;
8ee1c3db 406
749052fb
JN		 407 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
408
8ee1c3db 409 if (!(bclp & ASLE_BCLP_VALID))
507c1a45 410 return ASLC_BACKLIGHT_FAILED;
8ee1c3db
MG		 411
412 bclp &= ASLE_BCLP_MSK;
a9573556 413 if (bclp > 255)
507c1a45 414 return ASLC_BACKLIGHT_FAILED;
8ee1c3db 415
752aa88a
JB		 416 mutex_lock(&dev->mode_config.mutex);
417 /*
418 * Could match the OpRegion connector here instead, but we'd also need
419 * to verify the connector could handle a backlight call.
420 */
421 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
422 if (encoder->crtc == crtc) {
423 found = true;
424 break;
425 }
426
427 if (!found) {
428 ret = ASLC_BACKLIGHT_FAILED;
429 goto out;
430 }
431
432 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
433 if (connector->encoder == encoder)
434 intel_connector = to_intel_connector(connector);
435
436 if (!intel_connector) {
437 ret = ASLC_BACKLIGHT_FAILED;
438 goto out;
439 }
440
540b5d02 441 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
752aa88a 442 intel_panel_set_backlight(intel_connector, bclp, 255);
cac6a5ae 443 iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv);
8ee1c3db 444
752aa88a
JB		 445out:
446 mutex_unlock(&dev->mode_config.mutex);
447
448 return ret;
8ee1c3db
MG		 449}
450
451static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
452{
453 /* alsi is the current ALS reading in lux. 0 indicates below sensor
454 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
e93d440b 455 DRM_DEBUG_DRIVER("Illum is not supported\n");
507c1a45 456 return ASLC_ALS_ILLUM_FAILED;
8ee1c3db
MG		 457}
458
459static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
460{
e93d440b 461 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
507c1a45 462 return ASLC_PWM_FREQ_FAILED;
8ee1c3db
MG		 463}
464
465static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
466{
467 /* Panel fitting is currently controlled by the X code, so this is a
468 noop until modesetting support works fully */
e93d440b 469 DRM_DEBUG_DRIVER("Pfit is not supported\n");
507c1a45
PZ		 470 return ASLC_PFIT_FAILED;
471}
472
473static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot)
474{
475 DRM_DEBUG_DRIVER("SROT is not supported\n");
476 return ASLC_ROTATION_ANGLES_FAILED;
477}
478
479static u32 asle_set_button_array(struct drm_device *dev, u32 iuer)
480{
481 if (!iuer)
482 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
483 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
484 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
485 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
486 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
487 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
488 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
489 if (iuer & ASLE_IUER_WINDOWS_BTN)
490 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
491 if (iuer & ASLE_IUER_POWER_BTN)
492 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
493
494 return ASLC_BUTTON_ARRAY_FAILED;
495}
496
497static u32 asle_set_convertible(struct drm_device *dev, u32 iuer)
498{
499 if (iuer & ASLE_IUER_CONVERTIBLE)
500 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
501 else
502 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
503
504 return ASLC_CONVERTIBLE_FAILED;
505}
506
507static u32 asle_set_docking(struct drm_device *dev, u32 iuer)
508{
509 if (iuer & ASLE_IUER_DOCKING)
510 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
511 else
512 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
513
514 return ASLC_DOCKING_FAILED;
515}
516
517static u32 asle_isct_state(struct drm_device *dev)
518{
519 DRM_DEBUG_DRIVER("ISCT is not supported\n");
520 return ASLC_ISCT_STATE_FAILED;
8ee1c3db
MG		 521}
522
91a60f20 523static void asle_work(struct work_struct *work)
8ee1c3db 524{
91a60f20
JN		 525 struct intel_opregion *opregion =
526 container_of(work, struct intel_opregion, asle_work);
527 struct drm_i915_private *dev_priv =
528 container_of(opregion, struct drm_i915_private, opregion);
529 struct drm_device *dev = dev_priv->dev;
5bc4418b 530 struct opregion_asle __iomem *asle = dev_priv->opregion.asle;
507c1a45
PZ		 531 u32 aslc_stat = 0;
532 u32 aslc_req;
8ee1c3db
MG		 533
534 if (!asle)
535 return;
536
507c1a45 537 aslc_req = ioread32(&asle->aslc);
8ee1c3db 538
507c1a45
PZ		 539 if (!(aslc_req & ASLC_REQ_MSK)) {
540 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
541 aslc_req);
8ee1c3db
MG		 542 return;
543 }
544
507c1a45
PZ		 545 if (aslc_req & ASLC_SET_ALS_ILLUM)
546 aslc_stat |= asle_set_als_illum(dev, ioread32(&asle->alsi));
547
548 if (aslc_req & ASLC_SET_BACKLIGHT)
549 aslc_stat |= asle_set_backlight(dev, ioread32(&asle->bclp));
550
551 if (aslc_req & ASLC_SET_PFIT)
552 aslc_stat |= asle_set_pfit(dev, ioread32(&asle->pfit));
553
554 if (aslc_req & ASLC_SET_PWM_FREQ)
555 aslc_stat |= asle_set_pwm_freq(dev, ioread32(&asle->pfmb));
556
557 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
558 aslc_stat |= asle_set_supported_rotation_angles(dev,
559 ioread32(&asle->srot));
560
561 if (aslc_req & ASLC_BUTTON_ARRAY)
562 aslc_stat |= asle_set_button_array(dev, ioread32(&asle->iuer));
8ee1c3db 563
507c1a45
PZ		 564 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
565 aslc_stat |= asle_set_convertible(dev, ioread32(&asle->iuer));
8ee1c3db 566
507c1a45
PZ		 567 if (aslc_req & ASLC_DOCKING_INDICATOR)
568 aslc_stat |= asle_set_docking(dev, ioread32(&asle->iuer));
8ee1c3db 569
507c1a45
PZ		 570 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
571 aslc_stat |= asle_isct_state(dev);
8ee1c3db 572
507c1a45 573 iowrite32(aslc_stat, &asle->aslc);
8ee1c3db
MG		 574}
575
91a60f20
JN		 576void intel_opregion_asle_intr(struct drm_device *dev)
577{
578 struct drm_i915_private *dev_priv = dev->dev_private;
579
580 if (dev_priv->opregion.asle)
581 schedule_work(&dev_priv->opregion.asle_work);
582}
583
8ee1c3db
MG		 584#define ACPI_EV_DISPLAY_SWITCH (1<<0)
585#define ACPI_EV_LID (1<<1)
586#define ACPI_EV_DOCK (1<<2)
587
588static struct intel_opregion *system_opregion;
589
b358d0a6
HE		 590static int intel_opregion_video_event(struct notifier_block *nb,
591 unsigned long val, void *data)
8ee1c3db
MG		 592{
593 /* The only video events relevant to opregion are 0x80. These indicate
594 either a docking event, lid switch or display switch request. In
595 Linux, these are handled by the dock, button and video drivers.
f5a3d0c4 596 */
8ee1c3db 597
5bc4418b 598 struct opregion_acpi __iomem *acpi;
f5a3d0c4
MG		 599 struct acpi_bus_event *event = data;
600 int ret = NOTIFY_OK;
601
602 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
603 return NOTIFY_DONE;
8ee1c3db
MG		 604
605 if (!system_opregion)
606 return NOTIFY_DONE;
607
608 acpi = system_opregion->acpi;
f5a3d0c4 609
5bc4418b
BW		 610 if (event->type == 0x80 &&
611 (ioread32(&acpi->cevt) & 1) == 0)
f5a3d0c4
MG		 612 ret = NOTIFY_BAD;
613
5bc4418b 614 iowrite32(0, &acpi->csts);
8ee1c3db 615
f5a3d0c4 616 return ret;
8ee1c3db
MG		 617}
618
619static struct notifier_block intel_opregion_notifier = {
620 .notifier_call = intel_opregion_video_event,
621};
622
74a365b3
MG		 623/*
624 * Initialise the DIDL field in opregion. This passes a list of devices to
625 * the firmware. Values are defined by section B.4.2 of the ACPI specification
626 * (version 3)
627 */
628
629static void intel_didl_outputs(struct drm_device *dev)
630{
631 struct drm_i915_private *dev_priv = dev->dev_private;
632 struct intel_opregion *opregion = &dev_priv->opregion;
633 struct drm_connector *connector;
3143751f
ZR		 634 acpi_handle handle;
635 struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
636 unsigned long long device_id;
637 acpi_status status;
5bc4418b 638 u32 temp;
74a365b3
MG		 639 int i = 0;
640
3143751f 641 handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev);
7d37beaa 642 if (!handle || acpi_bus_get_device(handle, &acpi_dev))
3143751f
ZR		 643 return;
644
d4e1a692 645 if (acpi_is_video_device(handle))
3143751f
ZR		 646 acpi_video_bus = acpi_dev;
647 else {
648 list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
d4e1a692 649 if (acpi_is_video_device(acpi_cdev->handle)) {
3143751f
ZR		 650 acpi_video_bus = acpi_cdev;
651 break;
652 }
653 }
654 }
655
656 if (!acpi_video_bus) {
a70491cc 657 pr_warn("No ACPI video bus found\n");
3143751f
ZR		 658 return;
659 }
660
661 list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
662 if (i >= 8) {
0f4f7b57
DV		 663 dev_dbg(&dev->pdev->dev,
664 "More than 8 outputs detected via ACPI\n");
3143751f
ZR		 665 return;
666 }
667 status =
668 acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
669 NULL, &device_id);
670 if (ACPI_SUCCESS(status)) {
671 if (!device_id)
672 goto blind_set;
5bc4418b
BW		 673 iowrite32((u32)(device_id & 0x0f0f),
674 &opregion->acpi->didl[i]);
3143751f
ZR		 675 i++;
676 }
677 }
678
679end:
680 /* If fewer than 8 outputs, the list must be null terminated */
681 if (i < 8)
5bc4418b 682 iowrite32(0, &opregion->acpi->didl[i]);
3143751f
ZR		 683 return;
684
685blind_set:
686 i = 0;
74a365b3
MG		 687 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
688 int output_type = ACPI_OTHER_OUTPUT;
689 if (i >= 8) {
0f4f7b57
DV		 690 dev_dbg(&dev->pdev->dev,
691 "More than 8 outputs in connector list\n");
74a365b3
MG		 692 return;
693 }
694 switch (connector->connector_type) {
695 case DRM_MODE_CONNECTOR_VGA:
696 case DRM_MODE_CONNECTOR_DVIA:
697 output_type = ACPI_VGA_OUTPUT;
698 break;
699 case DRM_MODE_CONNECTOR_Composite:
700 case DRM_MODE_CONNECTOR_SVIDEO:
701 case DRM_MODE_CONNECTOR_Component:
702 case DRM_MODE_CONNECTOR_9PinDIN:
703 output_type = ACPI_TV_OUTPUT;
704 break;
705 case DRM_MODE_CONNECTOR_DVII:
706 case DRM_MODE_CONNECTOR_DVID:
707 case DRM_MODE_CONNECTOR_DisplayPort:
708 case DRM_MODE_CONNECTOR_HDMIA:
709 case DRM_MODE_CONNECTOR_HDMIB:
710 output_type = ACPI_DIGITAL_OUTPUT;
711 break;
712 case DRM_MODE_CONNECTOR_LVDS:
713 output_type = ACPI_LVDS_OUTPUT;
714 break;
715 }
5bc4418b
BW		 716 temp = ioread32(&opregion->acpi->didl[i]);
717 iowrite32(temp | (1<<31) | output_type | i,
718 &opregion->acpi->didl[i]);
74a365b3
MG		 719 i++;
720 }
3143751f 721 goto end;
74a365b3
MG		 722}
723
d627b62f
L		 724static void intel_setup_cadls(struct drm_device *dev)
725{
726 struct drm_i915_private *dev_priv = dev->dev_private;
727 struct intel_opregion *opregion = &dev_priv->opregion;
728 int i = 0;
729 u32 disp_id;
730
731 /* Initialize the CADL field by duplicating the DIDL values.
732 * Technically, this is not always correct as display outputs may exist,
733 * but not active. This initialization is necessary for some Clevo
734 * laptops that check this field before processing the brightness and
735 * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
736 * there are less than eight devices. */
737 do {
738 disp_id = ioread32(&opregion->acpi->didl[i]);
739 iowrite32(disp_id, &opregion->acpi->cadl[i]);
740 } while (++i < 8 && disp_id != 0);
741}
742
44834a67
CW		 743void intel_opregion_init(struct drm_device *dev)
744{
745 struct drm_i915_private *dev_priv = dev->dev_private;
746 struct intel_opregion *opregion = &dev_priv->opregion;
747
748 if (!opregion->header)
749 return;
750
751 if (opregion->acpi) {
d627b62f 752 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
44834a67 753 intel_didl_outputs(dev);
d627b62f
L		 754 intel_setup_cadls(dev);
755 }
44834a67
CW		 756
757 /* Notify BIOS we are ready to handle ACPI video ext notifs.
758 * Right now, all the events are handled by the ACPI video module.
759 * We don't actually need to do anything with them. */
5bc4418b
BW		 760 iowrite32(0, &opregion->acpi->csts);
761 iowrite32(1, &opregion->acpi->drdy);
44834a67
CW		 762
763 system_opregion = opregion;
764 register_acpi_notifier(&intel_opregion_notifier);
765 }
766
68bca4b0 767 if (opregion->asle) {
68bca4b0
JN		 768 iowrite32(ASLE_TCHE_BLC_EN, &opregion->asle->tche);
769 iowrite32(ASLE_ARDY_READY, &opregion->asle->ardy);
770 }
44834a67
CW		 771}
772
773void intel_opregion_fini(struct drm_device *dev)
774{
775 struct drm_i915_private *dev_priv = dev->dev_private;
776 struct intel_opregion *opregion = &dev_priv->opregion;
777
778 if (!opregion->header)
779 return;
780
68bca4b0
JN		 781 if (opregion->asle)
782 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
783
91a60f20
JN		 784 cancel_work_sync(&dev_priv->opregion.asle_work);
785
44834a67 786 if (opregion->acpi) {
5bc4418b 787 iowrite32(0, &opregion->acpi->drdy);
44834a67
CW		 788
789 system_opregion = NULL;
790 unregister_acpi_notifier(&intel_opregion_notifier);
791 }
792
793 /* just clear all opregion memory pointers now */
794 iounmap(opregion->header);
795 opregion->header = NULL;
796 opregion->acpi = NULL;
797 opregion->swsci = NULL;
798 opregion->asle = NULL;
799 opregion->vbt = NULL;
794a79a6 800 opregion->lid_state = NULL;
44834a67 801}
ebde53c7
JN		 802
803static void swsci_setup(struct drm_device *dev)
804{
805 struct drm_i915_private *dev_priv = dev->dev_private;
806 struct intel_opregion *opregion = &dev_priv->opregion;
807 bool requested_callbacks = false;
808 u32 tmp;
809
810 /* Sub-function code 0 is okay, let's allow them. */
811 opregion->swsci_gbda_sub_functions = 1;
812 opregion->swsci_sbcb_sub_functions = 1;
813
814 /* We use GBDA to ask for supported GBDA calls. */
815 if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
816 /* make the bits match the sub-function codes */
817 tmp <<= 1;
818 opregion->swsci_gbda_sub_functions |= tmp;
819 }
820
821 /*
822 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
823 * must not call interfaces that are not specifically requested by the
824 * bios.
825 */
826 if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
827 /* here, the bits already match sub-function codes */
828 opregion->swsci_sbcb_sub_functions |= tmp;
829 requested_callbacks = true;
830 }
831
832 /*
833 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
834 * the callback is _requested_. But we still can't call interfaces that
835 * are not requested.
836 */
837 if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
838 /* make the bits match the sub-function codes */
839 u32 low = tmp & 0x7ff;
840 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
841 tmp = (high << 4) | (low << 1) | 1;
842
843 /* best guess what to do with supported wrt requested */
844 if (requested_callbacks) {
845 u32 req = opregion->swsci_sbcb_sub_functions;
846 if ((req & tmp) != req)
847 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
848 /* XXX: for now, trust the requested callbacks */
849 /* opregion->swsci_sbcb_sub_functions &= tmp; */
850 } else {
851 opregion->swsci_sbcb_sub_functions |= tmp;
852 }
853 }
854
855 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
856 opregion->swsci_gbda_sub_functions,
857 opregion->swsci_sbcb_sub_functions);
858}
859#else /* CONFIG_ACPI */
860static inline void swsci_setup(struct drm_device *dev) {}
861#endif /* CONFIG_ACPI */
44834a67
CW		 862
863int intel_opregion_setup(struct drm_device *dev)
8ee1c3db
MG		 864{
865 struct drm_i915_private *dev_priv = dev->dev_private;
866 struct intel_opregion *opregion = &dev_priv->opregion;
5bc4418b 867 void __iomem *base;
8ee1c3db 868 u32 asls, mboxes;
5bc4418b 869 char buf[sizeof(OPREGION_SIGNATURE)];
8ee1c3db
MG		 870 int err = 0;
871
872 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
44d98a61 873 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
8ee1c3db 874 if (asls == 0) {
44d98a61 875 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
8ee1c3db
MG		 876 return -ENOTSUPP;
877 }
878
91a60f20
JN		 879 INIT_WORK(&opregion->asle_work, asle_work);
880
b705120e 881 base = acpi_os_ioremap(asls, OPREGION_SIZE);
8ee1c3db
MG		 882 if (!base)
883 return -ENOMEM;
884
5bc4418b
BW		 885 memcpy_fromio(buf, base, sizeof(buf));
886
887 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
44d98a61 888 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
8ee1c3db
MG		 889 err = -EINVAL;
890 goto err_out;
891 }
44834a67
CW		 892 opregion->header = base;
893 opregion->vbt = base + OPREGION_VBT_OFFSET;
8ee1c3db 894
82d3c90c 895 opregion->lid_state = base + ACPI_CLID;
01fe9dbd 896
5bc4418b 897 mboxes = ioread32(&opregion->header->mboxes);
8ee1c3db 898 if (mboxes & MBOX_ACPI) {
44d98a61 899 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
8ee1c3db 900 opregion->acpi = base + OPREGION_ACPI_OFFSET;
8ee1c3db 901 }
8ee1c3db
MG		 902
903 if (mboxes & MBOX_SWSCI) {
44d98a61 904 DRM_DEBUG_DRIVER("SWSCI supported\n");
8ee1c3db 905 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
ebde53c7 906 swsci_setup(dev);
8ee1c3db
MG		 907 }
908 if (mboxes & MBOX_ASLE) {
44d98a61 909 DRM_DEBUG_DRIVER("ASLE supported\n");
8ee1c3db 910 opregion->asle = base + OPREGION_ASLE_OFFSET;
68bca4b0
JN		 911
912 iowrite32(ASLE_ARDY_NOT_READY, &opregion->asle->ardy);
8ee1c3db
MG		 913 }
914
8ee1c3db
MG		 915 return 0;
916
917err_out:
30c56660 918 iounmap(base);
8ee1c3db
MG		 919 return err;
920}
Linux kernel - Deliverables
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