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1/*
2 * Copyright 2008 Intel Corporation <hong.liu@intel.com>
3 * Copyright 2008 Red Hat <mjg@redhat.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 *
26 */
27
28#include <linux/acpi.h>
29#include <linux/acpi_io.h>
30#include <acpi/video.h>
31
32#include "drmP.h"
33#include "i915_drm.h"
34#include "i915_drv.h"
35#include "intel_drv.h"
36
37#define PCI_ASLE 0xe4
38#define PCI_ASLS 0xfc
39
40#define OPREGION_HEADER_OFFSET 0
41#define OPREGION_ACPI_OFFSET 0x100
42#define ACPI_CLID 0x01ac /* current lid state indicator */
43#define ACPI_CDCK 0x01b0 /* current docking state indicator */
44#define OPREGION_SWSCI_OFFSET 0x200
45#define OPREGION_ASLE_OFFSET 0x300
46#define OPREGION_VBT_OFFSET 0x400
47
48#define OPREGION_SIGNATURE "IntelGraphicsMem"
49#define MBOX_ACPI (1<<0)
50#define MBOX_SWSCI (1<<1)
51#define MBOX_ASLE (1<<2)
52
53struct opregion_header {
54 u8 signature[16];
55 u32 size;
56 u32 opregion_ver;
57 u8 bios_ver[32];
58 u8 vbios_ver[16];
59 u8 driver_ver[16];
60 u32 mboxes;
61 u8 reserved[164];
62} __attribute__((packed));
63
64/* OpRegion mailbox #1: public ACPI methods */
65struct opregion_acpi {
66 u32 drdy; /* driver readiness */
67 u32 csts; /* notification status */
68 u32 cevt; /* current event */
69 u8 rsvd1[20];
70 u32 didl[8]; /* supported display devices ID list */
71 u32 cpdl[8]; /* currently presented display list */
72 u32 cadl[8]; /* currently active display list */
73 u32 nadl[8]; /* next active devices list */
74 u32 aslp; /* ASL sleep time-out */
75 u32 tidx; /* toggle table index */
76 u32 chpd; /* current hotplug enable indicator */
77 u32 clid; /* current lid state*/
78 u32 cdck; /* current docking state */
79 u32 sxsw; /* Sx state resume */
80 u32 evts; /* ASL supported events */
81 u32 cnot; /* current OS notification */
82 u32 nrdy; /* driver status */
83 u8 rsvd2[60];
84} __attribute__((packed));
85
86/* OpRegion mailbox #2: SWSCI */
87struct opregion_swsci {
88 u32 scic; /* SWSCI command|status|data */
89 u32 parm; /* command parameters */
90 u32 dslp; /* driver sleep time-out */
91 u8 rsvd[244];
92} __attribute__((packed));
93
94/* OpRegion mailbox #3: ASLE */
95struct opregion_asle {
96 u32 ardy; /* driver readiness */
97 u32 aslc; /* ASLE interrupt command */
98 u32 tche; /* technology enabled indicator */
99 u32 alsi; /* current ALS illuminance reading */
100 u32 bclp; /* backlight brightness to set */
101 u32 pfit; /* panel fitting state */
102 u32 cblv; /* current brightness level */
103 u16 bclm[20]; /* backlight level duty cycle mapping table */
104 u32 cpfm; /* current panel fitting mode */
105 u32 epfm; /* enabled panel fitting modes */
106 u8 plut[74]; /* panel LUT and identifier */
107 u32 pfmb; /* PWM freq and min brightness */
108 u8 rsvd[102];
109} __attribute__((packed));
110
111/* ASLE irq request bits */
112#define ASLE_SET_ALS_ILLUM (1 << 0)
113#define ASLE_SET_BACKLIGHT (1 << 1)
114#define ASLE_SET_PFIT (1 << 2)
115#define ASLE_SET_PWM_FREQ (1 << 3)
116#define ASLE_REQ_MSK 0xf
117
118/* response bits of ASLE irq request */
119#define ASLE_ALS_ILLUM_FAILED (1<<10)
120#define ASLE_BACKLIGHT_FAILED (1<<12)
121#define ASLE_PFIT_FAILED (1<<14)
122#define ASLE_PWM_FREQ_FAILED (1<<16)
123
124/* ASLE backlight brightness to set */
125#define ASLE_BCLP_VALID (1<<31)
126#define ASLE_BCLP_MSK (~(1<<31))
127
128/* ASLE panel fitting request */
129#define ASLE_PFIT_VALID (1<<31)
130#define ASLE_PFIT_CENTER (1<<0)
131#define ASLE_PFIT_STRETCH_TEXT (1<<1)
132#define ASLE_PFIT_STRETCH_GFX (1<<2)
133
134/* PWM frequency and minimum brightness */
135#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
136#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
137#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
138#define ASLE_PFMB_PWM_VALID (1<<31)
139
140#define ASLE_CBLV_VALID (1<<31)
141
142#define ACPI_OTHER_OUTPUT (0<<8)
143#define ACPI_VGA_OUTPUT (1<<8)
144#define ACPI_TV_OUTPUT (2<<8)
145#define ACPI_DIGITAL_OUTPUT (3<<8)
146#define ACPI_LVDS_OUTPUT (4<<8)
147
148#ifdef CONFIG_ACPI
149static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
150{
151 struct drm_i915_private *dev_priv = dev->dev_private;
152 struct opregion_asle *asle = dev_priv->opregion.asle;
153 u32 max;
154
155 if (!(bclp & ASLE_BCLP_VALID))
156 return ASLE_BACKLIGHT_FAILED;
157
158 bclp &= ASLE_BCLP_MSK;
159 if (bclp > 255)
160 return ASLE_BACKLIGHT_FAILED;
161
162 max = intel_panel_get_max_backlight(dev);
163 intel_panel_set_backlight(dev, bclp * max / 255);
164 asle->cblv = (bclp*0x64)/0xff | ASLE_CBLV_VALID;
165
166 return 0;
167}
168
169static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
170{
171 /* alsi is the current ALS reading in lux. 0 indicates below sensor
172 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
173 return 0;
174}
175
176static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
177{
178 struct drm_i915_private *dev_priv = dev->dev_private;
179 if (pfmb & ASLE_PFMB_PWM_VALID) {
180 u32 blc_pwm_ctl = I915_READ(BLC_PWM_CTL);
181 u32 pwm = pfmb & ASLE_PFMB_PWM_MASK;
182 blc_pwm_ctl &= BACKLIGHT_DUTY_CYCLE_MASK;
183 pwm = pwm >> 9;
184 /* FIXME - what do we do with the PWM? */
185 }
186 return 0;
187}
188
189static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
190{
191 /* Panel fitting is currently controlled by the X code, so this is a
192 noop until modesetting support works fully */
193 if (!(pfit & ASLE_PFIT_VALID))
194 return ASLE_PFIT_FAILED;
195 return 0;
196}
197
198void intel_opregion_asle_intr(struct drm_device *dev)
199{
200 struct drm_i915_private *dev_priv = dev->dev_private;
201 struct opregion_asle *asle = dev_priv->opregion.asle;
202 u32 asle_stat = 0;
203 u32 asle_req;
204
205 if (!asle)
206 return;
207
208 asle_req = asle->aslc & ASLE_REQ_MSK;
209
210 if (!asle_req) {
211 DRM_DEBUG_DRIVER("non asle set request??\n");
212 return;
213 }
214
215 if (asle_req & ASLE_SET_ALS_ILLUM)
216 asle_stat |= asle_set_als_illum(dev, asle->alsi);
217
218 if (asle_req & ASLE_SET_BACKLIGHT)
219 asle_stat |= asle_set_backlight(dev, asle->bclp);
220
221 if (asle_req & ASLE_SET_PFIT)
222 asle_stat |= asle_set_pfit(dev, asle->pfit);
223
224 if (asle_req & ASLE_SET_PWM_FREQ)
225 asle_stat |= asle_set_pwm_freq(dev, asle->pfmb);
226
227 asle->aslc = asle_stat;
228}
229
230void intel_opregion_gse_intr(struct drm_device *dev)
231{
232 struct drm_i915_private *dev_priv = dev->dev_private;
233 struct opregion_asle *asle = dev_priv->opregion.asle;
234 u32 asle_stat = 0;
235 u32 asle_req;
236
237 if (!asle)
238 return;
239
240 asle_req = asle->aslc & ASLE_REQ_MSK;
241
242 if (!asle_req) {
243 DRM_DEBUG_DRIVER("non asle set request??\n");
244 return;
245 }
246
247 if (asle_req & ASLE_SET_ALS_ILLUM) {
248 DRM_DEBUG_DRIVER("Illum is not supported\n");
249 asle_stat |= ASLE_ALS_ILLUM_FAILED;
250 }
251
252 if (asle_req & ASLE_SET_BACKLIGHT)
253 asle_stat |= asle_set_backlight(dev, asle->bclp);
254
255 if (asle_req & ASLE_SET_PFIT) {
256 DRM_DEBUG_DRIVER("Pfit is not supported\n");
257 asle_stat |= ASLE_PFIT_FAILED;
258 }
259
260 if (asle_req & ASLE_SET_PWM_FREQ) {
261 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
262 asle_stat |= ASLE_PWM_FREQ_FAILED;
263 }
264
265 asle->aslc = asle_stat;
266}
267#define ASLE_ALS_EN (1<<0)
268#define ASLE_BLC_EN (1<<1)
269#define ASLE_PFIT_EN (1<<2)
270#define ASLE_PFMB_EN (1<<3)
271
272void intel_opregion_enable_asle(struct drm_device *dev)
273{
274 struct drm_i915_private *dev_priv = dev->dev_private;
275 struct opregion_asle *asle = dev_priv->opregion.asle;
276
277 if (asle) {
278 if (IS_MOBILE(dev))
279 intel_enable_asle(dev);
280
281 asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN |
282 ASLE_PFMB_EN;
283 asle->ardy = 1;
284 }
285}
286
287#define ACPI_EV_DISPLAY_SWITCH (1<<0)
288#define ACPI_EV_LID (1<<1)
289#define ACPI_EV_DOCK (1<<2)
290
291static struct intel_opregion *system_opregion;
292
293static int intel_opregion_video_event(struct notifier_block *nb,
294 unsigned long val, void *data)
295{
296 /* The only video events relevant to opregion are 0x80. These indicate
297 either a docking event, lid switch or display switch request. In
298 Linux, these are handled by the dock, button and video drivers.
299 */
300
301 struct opregion_acpi *acpi;
302 struct acpi_bus_event *event = data;
303 int ret = NOTIFY_OK;
304
305 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
306 return NOTIFY_DONE;
307
308 if (!system_opregion)
309 return NOTIFY_DONE;
310
311 acpi = system_opregion->acpi;
312
313 if (event->type == 0x80 && !(acpi->cevt & 0x1))
314 ret = NOTIFY_BAD;
315
316 acpi->csts = 0;
317
318 return ret;
319}
320
321static struct notifier_block intel_opregion_notifier = {
322 .notifier_call = intel_opregion_video_event,
323};
324
325/*
326 * Initialise the DIDL field in opregion. This passes a list of devices to
327 * the firmware. Values are defined by section B.4.2 of the ACPI specification
328 * (version 3)
329 */
330
331static void intel_didl_outputs(struct drm_device *dev)
332{
333 struct drm_i915_private *dev_priv = dev->dev_private;
334 struct intel_opregion *opregion = &dev_priv->opregion;
335 struct drm_connector *connector;
336 acpi_handle handle;
337 struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
338 unsigned long long device_id;
339 acpi_status status;
340 int i = 0;
341
342 handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev);
343 if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev)))
344 return;
345
346 if (acpi_is_video_device(acpi_dev))
347 acpi_video_bus = acpi_dev;
348 else {
349 list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
350 if (acpi_is_video_device(acpi_cdev)) {
351 acpi_video_bus = acpi_cdev;
352 break;
353 }
354 }
355 }
356
357 if (!acpi_video_bus) {
358 printk(KERN_WARNING "No ACPI video bus found\n");
359 return;
360 }
361
362 list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
363 if (i >= 8) {
364 dev_printk (KERN_ERR, &dev->pdev->dev,
365 "More than 8 outputs detected\n");
366 return;
367 }
368 status =
369 acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
370 NULL, &device_id);
371 if (ACPI_SUCCESS(status)) {
372 if (!device_id)
373 goto blind_set;
374 opregion->acpi->didl[i] = (u32)(device_id & 0x0f0f);
375 i++;
376 }
377 }
378
379end:
380 /* If fewer than 8 outputs, the list must be null terminated */
381 if (i < 8)
382 opregion->acpi->didl[i] = 0;
383 return;
384
385blind_set:
386 i = 0;
387 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
388 int output_type = ACPI_OTHER_OUTPUT;
389 if (i >= 8) {
390 dev_printk (KERN_ERR, &dev->pdev->dev,
391 "More than 8 outputs detected\n");
392 return;
393 }
394 switch (connector->connector_type) {
395 case DRM_MODE_CONNECTOR_VGA:
396 case DRM_MODE_CONNECTOR_DVIA:
397 output_type = ACPI_VGA_OUTPUT;
398 break;
399 case DRM_MODE_CONNECTOR_Composite:
400 case DRM_MODE_CONNECTOR_SVIDEO:
401 case DRM_MODE_CONNECTOR_Component:
402 case DRM_MODE_CONNECTOR_9PinDIN:
403 output_type = ACPI_TV_OUTPUT;
404 break;
405 case DRM_MODE_CONNECTOR_DVII:
406 case DRM_MODE_CONNECTOR_DVID:
407 case DRM_MODE_CONNECTOR_DisplayPort:
408 case DRM_MODE_CONNECTOR_HDMIA:
409 case DRM_MODE_CONNECTOR_HDMIB:
410 output_type = ACPI_DIGITAL_OUTPUT;
411 break;
412 case DRM_MODE_CONNECTOR_LVDS:
413 output_type = ACPI_LVDS_OUTPUT;
414 break;
415 }
416 opregion->acpi->didl[i] |= (1<<31) | output_type | i;
417 i++;
418 }
419 goto end;
420}
421
422void intel_opregion_init(struct drm_device *dev)
423{
424 struct drm_i915_private *dev_priv = dev->dev_private;
425 struct intel_opregion *opregion = &dev_priv->opregion;
426
427 if (!opregion->header)
428 return;
429
430 if (opregion->acpi) {
431 if (drm_core_check_feature(dev, DRIVER_MODESET))
432 intel_didl_outputs(dev);
433
434 /* Notify BIOS we are ready to handle ACPI video ext notifs.
435 * Right now, all the events are handled by the ACPI video module.
436 * We don't actually need to do anything with them. */
437 opregion->acpi->csts = 0;
438 opregion->acpi->drdy = 1;
439
440 system_opregion = opregion;
441 register_acpi_notifier(&intel_opregion_notifier);
442 }
443
444 if (opregion->asle)
445 intel_opregion_enable_asle(dev);
446}
447
448void intel_opregion_fini(struct drm_device *dev)
449{
450 struct drm_i915_private *dev_priv = dev->dev_private;
451 struct intel_opregion *opregion = &dev_priv->opregion;
452
453 if (!opregion->header)
454 return;
455
456 if (opregion->acpi) {
457 opregion->acpi->drdy = 0;
458
459 system_opregion = NULL;
460 unregister_acpi_notifier(&intel_opregion_notifier);
461 }
462
463 /* just clear all opregion memory pointers now */
464 iounmap(opregion->header);
465 opregion->header = NULL;
466 opregion->acpi = NULL;
467 opregion->swsci = NULL;
468 opregion->asle = NULL;
469 opregion->vbt = NULL;
470}
471#endif
472
473int intel_opregion_setup(struct drm_device *dev)
474{
475 struct drm_i915_private *dev_priv = dev->dev_private;
476 struct intel_opregion *opregion = &dev_priv->opregion;
477 void *base;
478 u32 asls, mboxes;
479 int err = 0;
480
481 pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
482 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
483 if (asls == 0) {
484 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
485 return -ENOTSUPP;
486 }
487
488 base = acpi_os_ioremap(asls, OPREGION_SIZE);
489 if (!base)
490 return -ENOMEM;
491
492 if (memcmp(base, OPREGION_SIGNATURE, 16)) {
493 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
494 err = -EINVAL;
495 goto err_out;
496 }
497 opregion->header = base;
498 opregion->vbt = base + OPREGION_VBT_OFFSET;
499
500 opregion->lid_state = base + ACPI_CLID;
501
502 mboxes = opregion->header->mboxes;
503 if (mboxes & MBOX_ACPI) {
504 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
505 opregion->acpi = base + OPREGION_ACPI_OFFSET;
506 }
507
508 if (mboxes & MBOX_SWSCI) {
509 DRM_DEBUG_DRIVER("SWSCI supported\n");
510 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
511 }
512 if (mboxes & MBOX_ASLE) {
513 DRM_DEBUG_DRIVER("ASLE supported\n");
514 opregion->asle = base + OPREGION_ASLE_OFFSET;
515 }
516
517 return 0;
518
519err_out:
520 iounmap(base);
521 return err;
522}
1/*
2 * Copyright 2008 Intel Corporation <hong.liu@intel.com>
3 * Copyright 2008 Red Hat <mjg@redhat.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NON-INFRINGEMENT. IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 *
26 */
27
28#include <linux/acpi.h>
29#include <linux/dmi.h>
30#include <linux/firmware.h>
31#include <acpi/video.h>
32
33#include <drm/drmP.h>
34#include <drm/i915_drm.h>
35
36#include "intel_opregion.h"
37#include "i915_drv.h"
38#include "intel_drv.h"
39
40#define OPREGION_HEADER_OFFSET 0
41#define OPREGION_ACPI_OFFSET 0x100
42#define ACPI_CLID 0x01ac /* current lid state indicator */
43#define ACPI_CDCK 0x01b0 /* current docking state indicator */
44#define OPREGION_SWSCI_OFFSET 0x200
45#define OPREGION_ASLE_OFFSET 0x300
46#define OPREGION_VBT_OFFSET 0x400
47#define OPREGION_ASLE_EXT_OFFSET 0x1C00
48
49#define OPREGION_SIGNATURE "IntelGraphicsMem"
50#define MBOX_ACPI (1<<0)
51#define MBOX_SWSCI (1<<1)
52#define MBOX_ASLE (1<<2)
53#define MBOX_ASLE_EXT (1<<4)
54
55struct opregion_header {
56 u8 signature[16];
57 u32 size;
58 u32 opregion_ver;
59 u8 bios_ver[32];
60 u8 vbios_ver[16];
61 u8 driver_ver[16];
62 u32 mboxes;
63 u32 driver_model;
64 u32 pcon;
65 u8 dver[32];
66 u8 rsvd[124];
67} __packed;
68
69/* OpRegion mailbox #1: public ACPI methods */
70struct opregion_acpi {
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 u32 did2[7]; /* extended supported display devices ID list */
89 u32 cpd2[7]; /* extended attached display devices list */
90 u8 rsvd2[4];
91} __packed;
92
93/* OpRegion mailbox #2: SWSCI */
94struct opregion_swsci {
95 u32 scic; /* SWSCI command|status|data */
96 u32 parm; /* command parameters */
97 u32 dslp; /* driver sleep time-out */
98 u8 rsvd[244];
99} __packed;
100
101/* OpRegion mailbox #3: ASLE */
102struct opregion_asle {
103 u32 ardy; /* driver readiness */
104 u32 aslc; /* ASLE interrupt command */
105 u32 tche; /* technology enabled indicator */
106 u32 alsi; /* current ALS illuminance reading */
107 u32 bclp; /* backlight brightness to set */
108 u32 pfit; /* panel fitting state */
109 u32 cblv; /* current brightness level */
110 u16 bclm[20]; /* backlight level duty cycle mapping table */
111 u32 cpfm; /* current panel fitting mode */
112 u32 epfm; /* enabled panel fitting modes */
113 u8 plut[74]; /* panel LUT and identifier */
114 u32 pfmb; /* PWM freq and min brightness */
115 u32 cddv; /* color correction default values */
116 u32 pcft; /* power conservation features */
117 u32 srot; /* supported rotation angles */
118 u32 iuer; /* IUER events */
119 u64 fdss;
120 u32 fdsp;
121 u32 stat;
122 u64 rvda; /* Physical address of raw vbt data */
123 u32 rvds; /* Size of raw vbt data */
124 u8 rsvd[58];
125} __packed;
126
127/* OpRegion mailbox #5: ASLE ext */
128struct opregion_asle_ext {
129 u32 phed; /* Panel Header */
130 u8 bddc[256]; /* Panel EDID */
131 u8 rsvd[764];
132} __packed;
133
134/* Driver readiness indicator */
135#define ASLE_ARDY_READY (1 << 0)
136#define ASLE_ARDY_NOT_READY (0 << 0)
137
138/* ASLE Interrupt Command (ASLC) bits */
139#define ASLC_SET_ALS_ILLUM (1 << 0)
140#define ASLC_SET_BACKLIGHT (1 << 1)
141#define ASLC_SET_PFIT (1 << 2)
142#define ASLC_SET_PWM_FREQ (1 << 3)
143#define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
144#define ASLC_BUTTON_ARRAY (1 << 5)
145#define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
146#define ASLC_DOCKING_INDICATOR (1 << 7)
147#define ASLC_ISCT_STATE_CHANGE (1 << 8)
148#define ASLC_REQ_MSK 0x1ff
149/* response bits */
150#define ASLC_ALS_ILLUM_FAILED (1 << 10)
151#define ASLC_BACKLIGHT_FAILED (1 << 12)
152#define ASLC_PFIT_FAILED (1 << 14)
153#define ASLC_PWM_FREQ_FAILED (1 << 16)
154#define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
155#define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
156#define ASLC_CONVERTIBLE_FAILED (1 << 22)
157#define ASLC_DOCKING_FAILED (1 << 24)
158#define ASLC_ISCT_STATE_FAILED (1 << 26)
159
160/* Technology enabled indicator */
161#define ASLE_TCHE_ALS_EN (1 << 0)
162#define ASLE_TCHE_BLC_EN (1 << 1)
163#define ASLE_TCHE_PFIT_EN (1 << 2)
164#define ASLE_TCHE_PFMB_EN (1 << 3)
165
166/* ASLE backlight brightness to set */
167#define ASLE_BCLP_VALID (1<<31)
168#define ASLE_BCLP_MSK (~(1<<31))
169
170/* ASLE panel fitting request */
171#define ASLE_PFIT_VALID (1<<31)
172#define ASLE_PFIT_CENTER (1<<0)
173#define ASLE_PFIT_STRETCH_TEXT (1<<1)
174#define ASLE_PFIT_STRETCH_GFX (1<<2)
175
176/* PWM frequency and minimum brightness */
177#define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
178#define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
179#define ASLE_PFMB_PWM_MASK (0x7ffffe00)
180#define ASLE_PFMB_PWM_VALID (1<<31)
181
182#define ASLE_CBLV_VALID (1<<31)
183
184/* IUER */
185#define ASLE_IUER_DOCKING (1 << 7)
186#define ASLE_IUER_CONVERTIBLE (1 << 6)
187#define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
188#define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
189#define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
190#define ASLE_IUER_WINDOWS_BTN (1 << 1)
191#define ASLE_IUER_POWER_BTN (1 << 0)
192
193/* Software System Control Interrupt (SWSCI) */
194#define SWSCI_SCIC_INDICATOR (1 << 0)
195#define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
196#define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
197#define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
198#define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
199#define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
200#define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
201#define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
202#define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
203#define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
204
205#define SWSCI_FUNCTION_CODE(main, sub) \
206 ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
207 (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
208
209/* SWSCI: Get BIOS Data (GBDA) */
210#define SWSCI_GBDA 4
211#define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
212#define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
213#define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
214#define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
215#define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
216#define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
217#define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
218
219/* SWSCI: System BIOS Callbacks (SBCB) */
220#define SWSCI_SBCB 6
221#define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
222#define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
223#define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
224#define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
225#define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
226#define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
227#define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
228#define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
229#define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
230#define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
231#define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
232#define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
233#define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
234#define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
235#define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
236#define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
237
238/*
239 * ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices
240 * Attached to the Display Adapter).
241 */
242#define ACPI_DISPLAY_INDEX_SHIFT 0
243#define ACPI_DISPLAY_INDEX_MASK (0xf << 0)
244#define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT 4
245#define ACPI_DISPLAY_PORT_ATTACHMENT_MASK (0xf << 4)
246#define ACPI_DISPLAY_TYPE_SHIFT 8
247#define ACPI_DISPLAY_TYPE_MASK (0xf << 8)
248#define ACPI_DISPLAY_TYPE_OTHER (0 << 8)
249#define ACPI_DISPLAY_TYPE_VGA (1 << 8)
250#define ACPI_DISPLAY_TYPE_TV (2 << 8)
251#define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL (3 << 8)
252#define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL (4 << 8)
253#define ACPI_VENDOR_SPECIFIC_SHIFT 12
254#define ACPI_VENDOR_SPECIFIC_MASK (0xf << 12)
255#define ACPI_BIOS_CAN_DETECT (1 << 16)
256#define ACPI_DEPENDS_ON_VGA (1 << 17)
257#define ACPI_PIPE_ID_SHIFT 18
258#define ACPI_PIPE_ID_MASK (7 << 18)
259#define ACPI_DEVICE_ID_SCHEME (1 << 31)
260
261#define MAX_DSLP 1500
262
263static int swsci(struct drm_i915_private *dev_priv,
264 u32 function, u32 parm, u32 *parm_out)
265{
266 struct opregion_swsci *swsci = dev_priv->opregion.swsci;
267 struct pci_dev *pdev = dev_priv->drm.pdev;
268 u32 main_function, sub_function, scic;
269 u16 swsci_val;
270 u32 dslp;
271
272 if (!swsci)
273 return -ENODEV;
274
275 main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
276 SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
277 sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
278 SWSCI_SCIC_SUB_FUNCTION_SHIFT;
279
280 /* Check if we can call the function. See swsci_setup for details. */
281 if (main_function == SWSCI_SBCB) {
282 if ((dev_priv->opregion.swsci_sbcb_sub_functions &
283 (1 << sub_function)) == 0)
284 return -EINVAL;
285 } else if (main_function == SWSCI_GBDA) {
286 if ((dev_priv->opregion.swsci_gbda_sub_functions &
287 (1 << sub_function)) == 0)
288 return -EINVAL;
289 }
290
291 /* Driver sleep timeout in ms. */
292 dslp = swsci->dslp;
293 if (!dslp) {
294 /* The spec says 2ms should be the default, but it's too small
295 * for some machines. */
296 dslp = 50;
297 } else if (dslp > MAX_DSLP) {
298 /* Hey bios, trust must be earned. */
299 DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
300 "using %u ms instead\n", dslp, MAX_DSLP);
301 dslp = MAX_DSLP;
302 }
303
304 /* The spec tells us to do this, but we are the only user... */
305 scic = swsci->scic;
306 if (scic & SWSCI_SCIC_INDICATOR) {
307 DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
308 return -EBUSY;
309 }
310
311 scic = function | SWSCI_SCIC_INDICATOR;
312
313 swsci->parm = parm;
314 swsci->scic = scic;
315
316 /* Ensure SCI event is selected and event trigger is cleared. */
317 pci_read_config_word(pdev, SWSCI, &swsci_val);
318 if (!(swsci_val & SWSCI_SCISEL) || (swsci_val & SWSCI_GSSCIE)) {
319 swsci_val |= SWSCI_SCISEL;
320 swsci_val &= ~SWSCI_GSSCIE;
321 pci_write_config_word(pdev, SWSCI, swsci_val);
322 }
323
324 /* Use event trigger to tell bios to check the mail. */
325 swsci_val |= SWSCI_GSSCIE;
326 pci_write_config_word(pdev, SWSCI, swsci_val);
327
328 /* Poll for the result. */
329#define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
330 if (wait_for(C, dslp)) {
331 DRM_DEBUG_DRIVER("SWSCI request timed out\n");
332 return -ETIMEDOUT;
333 }
334
335 scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
336 SWSCI_SCIC_EXIT_STATUS_SHIFT;
337
338 /* Note: scic == 0 is an error! */
339 if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
340 DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
341 return -EIO;
342 }
343
344 if (parm_out)
345 *parm_out = swsci->parm;
346
347 return 0;
348
349#undef C
350}
351
352#define DISPLAY_TYPE_CRT 0
353#define DISPLAY_TYPE_TV 1
354#define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
355#define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
356
357int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
358 bool enable)
359{
360 struct drm_i915_private *dev_priv = to_i915(intel_encoder->base.dev);
361 u32 parm = 0;
362 u32 type = 0;
363 u32 port;
364
365 /* don't care about old stuff for now */
366 if (!HAS_DDI(dev_priv))
367 return 0;
368
369 if (intel_encoder->type == INTEL_OUTPUT_DSI)
370 port = 0;
371 else
372 port = intel_encoder->port;
373
374 if (port == PORT_E) {
375 port = 0;
376 } else {
377 parm |= 1 << port;
378 port++;
379 }
380
381 if (!enable)
382 parm |= 4 << 8;
383
384 switch (intel_encoder->type) {
385 case INTEL_OUTPUT_ANALOG:
386 type = DISPLAY_TYPE_CRT;
387 break;
388 case INTEL_OUTPUT_DDI:
389 case INTEL_OUTPUT_DP:
390 case INTEL_OUTPUT_HDMI:
391 case INTEL_OUTPUT_DP_MST:
392 type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
393 break;
394 case INTEL_OUTPUT_EDP:
395 case INTEL_OUTPUT_DSI:
396 type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
397 break;
398 default:
399 WARN_ONCE(1, "unsupported intel_encoder type %d\n",
400 intel_encoder->type);
401 return -EINVAL;
402 }
403
404 parm |= type << (16 + port * 3);
405
406 return swsci(dev_priv, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
407}
408
409static const struct {
410 pci_power_t pci_power_state;
411 u32 parm;
412} power_state_map[] = {
413 { PCI_D0, 0x00 },
414 { PCI_D1, 0x01 },
415 { PCI_D2, 0x02 },
416 { PCI_D3hot, 0x04 },
417 { PCI_D3cold, 0x04 },
418};
419
420int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
421 pci_power_t state)
422{
423 int i;
424
425 if (!HAS_DDI(dev_priv))
426 return 0;
427
428 for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
429 if (state == power_state_map[i].pci_power_state)
430 return swsci(dev_priv, SWSCI_SBCB_ADAPTER_POWER_STATE,
431 power_state_map[i].parm, NULL);
432 }
433
434 return -EINVAL;
435}
436
437static u32 asle_set_backlight(struct drm_i915_private *dev_priv, u32 bclp)
438{
439 struct intel_connector *connector;
440 struct drm_connector_list_iter conn_iter;
441 struct opregion_asle *asle = dev_priv->opregion.asle;
442 struct drm_device *dev = &dev_priv->drm;
443
444 DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
445
446 if (acpi_video_get_backlight_type() == acpi_backlight_native) {
447 DRM_DEBUG_KMS("opregion backlight request ignored\n");
448 return 0;
449 }
450
451 if (!(bclp & ASLE_BCLP_VALID))
452 return ASLC_BACKLIGHT_FAILED;
453
454 bclp &= ASLE_BCLP_MSK;
455 if (bclp > 255)
456 return ASLC_BACKLIGHT_FAILED;
457
458 drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
459
460 /*
461 * Update backlight on all connectors that support backlight (usually
462 * only one).
463 */
464 DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
465 drm_connector_list_iter_begin(dev, &conn_iter);
466 for_each_intel_connector_iter(connector, &conn_iter)
467 intel_panel_set_backlight_acpi(connector->base.state, bclp, 255);
468 drm_connector_list_iter_end(&conn_iter);
469 asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
470
471 drm_modeset_unlock(&dev->mode_config.connection_mutex);
472
473
474 return 0;
475}
476
477static u32 asle_set_als_illum(struct drm_i915_private *dev_priv, u32 alsi)
478{
479 /* alsi is the current ALS reading in lux. 0 indicates below sensor
480 range, 0xffff indicates above sensor range. 1-0xfffe are valid */
481 DRM_DEBUG_DRIVER("Illum is not supported\n");
482 return ASLC_ALS_ILLUM_FAILED;
483}
484
485static u32 asle_set_pwm_freq(struct drm_i915_private *dev_priv, u32 pfmb)
486{
487 DRM_DEBUG_DRIVER("PWM freq is not supported\n");
488 return ASLC_PWM_FREQ_FAILED;
489}
490
491static u32 asle_set_pfit(struct drm_i915_private *dev_priv, u32 pfit)
492{
493 /* Panel fitting is currently controlled by the X code, so this is a
494 noop until modesetting support works fully */
495 DRM_DEBUG_DRIVER("Pfit is not supported\n");
496 return ASLC_PFIT_FAILED;
497}
498
499static u32 asle_set_supported_rotation_angles(struct drm_i915_private *dev_priv, u32 srot)
500{
501 DRM_DEBUG_DRIVER("SROT is not supported\n");
502 return ASLC_ROTATION_ANGLES_FAILED;
503}
504
505static u32 asle_set_button_array(struct drm_i915_private *dev_priv, u32 iuer)
506{
507 if (!iuer)
508 DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
509 if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
510 DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
511 if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
512 DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
513 if (iuer & ASLE_IUER_VOLUME_UP_BTN)
514 DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
515 if (iuer & ASLE_IUER_WINDOWS_BTN)
516 DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
517 if (iuer & ASLE_IUER_POWER_BTN)
518 DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
519
520 return ASLC_BUTTON_ARRAY_FAILED;
521}
522
523static u32 asle_set_convertible(struct drm_i915_private *dev_priv, u32 iuer)
524{
525 if (iuer & ASLE_IUER_CONVERTIBLE)
526 DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
527 else
528 DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
529
530 return ASLC_CONVERTIBLE_FAILED;
531}
532
533static u32 asle_set_docking(struct drm_i915_private *dev_priv, u32 iuer)
534{
535 if (iuer & ASLE_IUER_DOCKING)
536 DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
537 else
538 DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
539
540 return ASLC_DOCKING_FAILED;
541}
542
543static u32 asle_isct_state(struct drm_i915_private *dev_priv)
544{
545 DRM_DEBUG_DRIVER("ISCT is not supported\n");
546 return ASLC_ISCT_STATE_FAILED;
547}
548
549static void asle_work(struct work_struct *work)
550{
551 struct intel_opregion *opregion =
552 container_of(work, struct intel_opregion, asle_work);
553 struct drm_i915_private *dev_priv =
554 container_of(opregion, struct drm_i915_private, opregion);
555 struct opregion_asle *asle = dev_priv->opregion.asle;
556 u32 aslc_stat = 0;
557 u32 aslc_req;
558
559 if (!asle)
560 return;
561
562 aslc_req = asle->aslc;
563
564 if (!(aslc_req & ASLC_REQ_MSK)) {
565 DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
566 aslc_req);
567 return;
568 }
569
570 if (aslc_req & ASLC_SET_ALS_ILLUM)
571 aslc_stat |= asle_set_als_illum(dev_priv, asle->alsi);
572
573 if (aslc_req & ASLC_SET_BACKLIGHT)
574 aslc_stat |= asle_set_backlight(dev_priv, asle->bclp);
575
576 if (aslc_req & ASLC_SET_PFIT)
577 aslc_stat |= asle_set_pfit(dev_priv, asle->pfit);
578
579 if (aslc_req & ASLC_SET_PWM_FREQ)
580 aslc_stat |= asle_set_pwm_freq(dev_priv, asle->pfmb);
581
582 if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
583 aslc_stat |= asle_set_supported_rotation_angles(dev_priv,
584 asle->srot);
585
586 if (aslc_req & ASLC_BUTTON_ARRAY)
587 aslc_stat |= asle_set_button_array(dev_priv, asle->iuer);
588
589 if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
590 aslc_stat |= asle_set_convertible(dev_priv, asle->iuer);
591
592 if (aslc_req & ASLC_DOCKING_INDICATOR)
593 aslc_stat |= asle_set_docking(dev_priv, asle->iuer);
594
595 if (aslc_req & ASLC_ISCT_STATE_CHANGE)
596 aslc_stat |= asle_isct_state(dev_priv);
597
598 asle->aslc = aslc_stat;
599}
600
601void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
602{
603 if (dev_priv->opregion.asle)
604 schedule_work(&dev_priv->opregion.asle_work);
605}
606
607#define ACPI_EV_DISPLAY_SWITCH (1<<0)
608#define ACPI_EV_LID (1<<1)
609#define ACPI_EV_DOCK (1<<2)
610
611static struct intel_opregion *system_opregion;
612
613static int intel_opregion_video_event(struct notifier_block *nb,
614 unsigned long val, void *data)
615{
616 /* The only video events relevant to opregion are 0x80. These indicate
617 either a docking event, lid switch or display switch request. In
618 Linux, these are handled by the dock, button and video drivers.
619 */
620
621 struct acpi_bus_event *event = data;
622 struct opregion_acpi *acpi;
623 int ret = NOTIFY_OK;
624
625 if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
626 return NOTIFY_DONE;
627
628 if (!system_opregion)
629 return NOTIFY_DONE;
630
631 acpi = system_opregion->acpi;
632
633 if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
634 ret = NOTIFY_BAD;
635
636 acpi->csts = 0;
637
638 return ret;
639}
640
641static struct notifier_block intel_opregion_notifier = {
642 .notifier_call = intel_opregion_video_event,
643};
644
645/*
646 * Initialise the DIDL field in opregion. This passes a list of devices to
647 * the firmware. Values are defined by section B.4.2 of the ACPI specification
648 * (version 3)
649 */
650
651static void set_did(struct intel_opregion *opregion, int i, u32 val)
652{
653 if (i < ARRAY_SIZE(opregion->acpi->didl)) {
654 opregion->acpi->didl[i] = val;
655 } else {
656 i -= ARRAY_SIZE(opregion->acpi->didl);
657
658 if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
659 return;
660
661 opregion->acpi->did2[i] = val;
662 }
663}
664
665static u32 acpi_display_type(struct intel_connector *connector)
666{
667 u32 display_type;
668
669 switch (connector->base.connector_type) {
670 case DRM_MODE_CONNECTOR_VGA:
671 case DRM_MODE_CONNECTOR_DVIA:
672 display_type = ACPI_DISPLAY_TYPE_VGA;
673 break;
674 case DRM_MODE_CONNECTOR_Composite:
675 case DRM_MODE_CONNECTOR_SVIDEO:
676 case DRM_MODE_CONNECTOR_Component:
677 case DRM_MODE_CONNECTOR_9PinDIN:
678 case DRM_MODE_CONNECTOR_TV:
679 display_type = ACPI_DISPLAY_TYPE_TV;
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 display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
687 break;
688 case DRM_MODE_CONNECTOR_LVDS:
689 case DRM_MODE_CONNECTOR_eDP:
690 case DRM_MODE_CONNECTOR_DSI:
691 display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
692 break;
693 case DRM_MODE_CONNECTOR_Unknown:
694 case DRM_MODE_CONNECTOR_VIRTUAL:
695 display_type = ACPI_DISPLAY_TYPE_OTHER;
696 break;
697 default:
698 MISSING_CASE(connector->base.connector_type);
699 display_type = ACPI_DISPLAY_TYPE_OTHER;
700 break;
701 }
702
703 return display_type;
704}
705
706static void intel_didl_outputs(struct drm_i915_private *dev_priv)
707{
708 struct intel_opregion *opregion = &dev_priv->opregion;
709 struct intel_connector *connector;
710 struct drm_connector_list_iter conn_iter;
711 int i = 0, max_outputs;
712 int display_index[16] = {};
713
714 /*
715 * In theory, did2, the extended didl, gets added at opregion version
716 * 3.0. In practice, however, we're supposed to set it for earlier
717 * versions as well, since a BIOS that doesn't understand did2 should
718 * not look at it anyway. Use a variable so we can tweak this if a need
719 * arises later.
720 */
721 max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
722 ARRAY_SIZE(opregion->acpi->did2);
723
724 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
725 for_each_intel_connector_iter(connector, &conn_iter) {
726 u32 device_id, type;
727
728 device_id = acpi_display_type(connector);
729
730 /* Use display type specific display index. */
731 type = (device_id & ACPI_DISPLAY_TYPE_MASK)
732 >> ACPI_DISPLAY_TYPE_SHIFT;
733 device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT;
734
735 connector->acpi_device_id = device_id;
736 if (i < max_outputs)
737 set_did(opregion, i, device_id);
738 i++;
739 }
740 drm_connector_list_iter_end(&conn_iter);
741
742 DRM_DEBUG_KMS("%d outputs detected\n", i);
743
744 if (i > max_outputs)
745 DRM_ERROR("More than %d outputs in connector list\n",
746 max_outputs);
747
748 /* If fewer than max outputs, the list must be null terminated */
749 if (i < max_outputs)
750 set_did(opregion, i, 0);
751}
752
753static void intel_setup_cadls(struct drm_i915_private *dev_priv)
754{
755 struct intel_opregion *opregion = &dev_priv->opregion;
756 struct intel_connector *connector;
757 struct drm_connector_list_iter conn_iter;
758 int i = 0;
759
760 /*
761 * Initialize the CADL field from the connector device ids. This is
762 * essentially the same as copying from the DIDL. Technically, this is
763 * not always correct as display outputs may exist, but not active. This
764 * initialization is necessary for some Clevo laptops that check this
765 * field before processing the brightness and display switching hotkeys.
766 *
767 * Note that internal panels should be at the front of the connector
768 * list already, ensuring they're not left out.
769 */
770 drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
771 for_each_intel_connector_iter(connector, &conn_iter) {
772 if (i >= ARRAY_SIZE(opregion->acpi->cadl))
773 break;
774 opregion->acpi->cadl[i++] = connector->acpi_device_id;
775 }
776 drm_connector_list_iter_end(&conn_iter);
777
778 /* If fewer than 8 active devices, the list must be null terminated */
779 if (i < ARRAY_SIZE(opregion->acpi->cadl))
780 opregion->acpi->cadl[i] = 0;
781}
782
783void intel_opregion_register(struct drm_i915_private *dev_priv)
784{
785 struct intel_opregion *opregion = &dev_priv->opregion;
786
787 if (!opregion->header)
788 return;
789
790 if (opregion->acpi) {
791 intel_didl_outputs(dev_priv);
792 intel_setup_cadls(dev_priv);
793
794 /* Notify BIOS we are ready to handle ACPI video ext notifs.
795 * Right now, all the events are handled by the ACPI video module.
796 * We don't actually need to do anything with them. */
797 opregion->acpi->csts = 0;
798 opregion->acpi->drdy = 1;
799
800 system_opregion = opregion;
801 register_acpi_notifier(&intel_opregion_notifier);
802 }
803
804 if (opregion->asle) {
805 opregion->asle->tche = ASLE_TCHE_BLC_EN;
806 opregion->asle->ardy = ASLE_ARDY_READY;
807 }
808}
809
810void intel_opregion_unregister(struct drm_i915_private *dev_priv)
811{
812 struct intel_opregion *opregion = &dev_priv->opregion;
813
814 if (!opregion->header)
815 return;
816
817 if (opregion->asle)
818 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
819
820 cancel_work_sync(&dev_priv->opregion.asle_work);
821
822 if (opregion->acpi) {
823 opregion->acpi->drdy = 0;
824
825 system_opregion = NULL;
826 unregister_acpi_notifier(&intel_opregion_notifier);
827 }
828
829 /* just clear all opregion memory pointers now */
830 memunmap(opregion->header);
831 if (opregion->rvda) {
832 memunmap(opregion->rvda);
833 opregion->rvda = NULL;
834 }
835 if (opregion->vbt_firmware) {
836 kfree(opregion->vbt_firmware);
837 opregion->vbt_firmware = NULL;
838 }
839 opregion->header = NULL;
840 opregion->acpi = NULL;
841 opregion->swsci = NULL;
842 opregion->asle = NULL;
843 opregion->vbt = NULL;
844 opregion->lid_state = NULL;
845}
846
847static void swsci_setup(struct drm_i915_private *dev_priv)
848{
849 struct intel_opregion *opregion = &dev_priv->opregion;
850 bool requested_callbacks = false;
851 u32 tmp;
852
853 /* Sub-function code 0 is okay, let's allow them. */
854 opregion->swsci_gbda_sub_functions = 1;
855 opregion->swsci_sbcb_sub_functions = 1;
856
857 /* We use GBDA to ask for supported GBDA calls. */
858 if (swsci(dev_priv, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
859 /* make the bits match the sub-function codes */
860 tmp <<= 1;
861 opregion->swsci_gbda_sub_functions |= tmp;
862 }
863
864 /*
865 * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
866 * must not call interfaces that are not specifically requested by the
867 * bios.
868 */
869 if (swsci(dev_priv, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
870 /* here, the bits already match sub-function codes */
871 opregion->swsci_sbcb_sub_functions |= tmp;
872 requested_callbacks = true;
873 }
874
875 /*
876 * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
877 * the callback is _requested_. But we still can't call interfaces that
878 * are not requested.
879 */
880 if (swsci(dev_priv, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
881 /* make the bits match the sub-function codes */
882 u32 low = tmp & 0x7ff;
883 u32 high = tmp & ~0xfff; /* bit 11 is reserved */
884 tmp = (high << 4) | (low << 1) | 1;
885
886 /* best guess what to do with supported wrt requested */
887 if (requested_callbacks) {
888 u32 req = opregion->swsci_sbcb_sub_functions;
889 if ((req & tmp) != req)
890 DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
891 /* XXX: for now, trust the requested callbacks */
892 /* opregion->swsci_sbcb_sub_functions &= tmp; */
893 } else {
894 opregion->swsci_sbcb_sub_functions |= tmp;
895 }
896 }
897
898 DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
899 opregion->swsci_gbda_sub_functions,
900 opregion->swsci_sbcb_sub_functions);
901}
902
903static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
904{
905 DRM_DEBUG_KMS("Falling back to manually reading VBT from "
906 "VBIOS ROM for %s\n", id->ident);
907 return 1;
908}
909
910static const struct dmi_system_id intel_no_opregion_vbt[] = {
911 {
912 .callback = intel_no_opregion_vbt_callback,
913 .ident = "ThinkCentre A57",
914 .matches = {
915 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
916 DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
917 },
918 },
919 { }
920};
921
922static int intel_load_vbt_firmware(struct drm_i915_private *dev_priv)
923{
924 struct intel_opregion *opregion = &dev_priv->opregion;
925 const struct firmware *fw = NULL;
926 const char *name = i915_modparams.vbt_firmware;
927 int ret;
928
929 if (!name || !*name)
930 return -ENOENT;
931
932 ret = request_firmware(&fw, name, &dev_priv->drm.pdev->dev);
933 if (ret) {
934 DRM_ERROR("Requesting VBT firmware \"%s\" failed (%d)\n",
935 name, ret);
936 return ret;
937 }
938
939 if (intel_bios_is_valid_vbt(fw->data, fw->size)) {
940 opregion->vbt_firmware = kmemdup(fw->data, fw->size, GFP_KERNEL);
941 if (opregion->vbt_firmware) {
942 DRM_DEBUG_KMS("Found valid VBT firmware \"%s\"\n", name);
943 opregion->vbt = opregion->vbt_firmware;
944 opregion->vbt_size = fw->size;
945 ret = 0;
946 } else {
947 ret = -ENOMEM;
948 }
949 } else {
950 DRM_DEBUG_KMS("Invalid VBT firmware \"%s\"\n", name);
951 ret = -EINVAL;
952 }
953
954 release_firmware(fw);
955
956 return ret;
957}
958
959int intel_opregion_setup(struct drm_i915_private *dev_priv)
960{
961 struct intel_opregion *opregion = &dev_priv->opregion;
962 struct pci_dev *pdev = dev_priv->drm.pdev;
963 u32 asls, mboxes;
964 char buf[sizeof(OPREGION_SIGNATURE)];
965 int err = 0;
966 void *base;
967 const void *vbt;
968 u32 vbt_size;
969
970 BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
971 BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
972 BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
973 BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
974 BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
975
976 pci_read_config_dword(pdev, ASLS, &asls);
977 DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
978 if (asls == 0) {
979 DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
980 return -ENOTSUPP;
981 }
982
983 INIT_WORK(&opregion->asle_work, asle_work);
984
985 base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
986 if (!base)
987 return -ENOMEM;
988
989 memcpy(buf, base, sizeof(buf));
990
991 if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
992 DRM_DEBUG_DRIVER("opregion signature mismatch\n");
993 err = -EINVAL;
994 goto err_out;
995 }
996 opregion->header = base;
997 opregion->lid_state = base + ACPI_CLID;
998
999 mboxes = opregion->header->mboxes;
1000 if (mboxes & MBOX_ACPI) {
1001 DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
1002 opregion->acpi = base + OPREGION_ACPI_OFFSET;
1003 }
1004
1005 if (mboxes & MBOX_SWSCI) {
1006 DRM_DEBUG_DRIVER("SWSCI supported\n");
1007 opregion->swsci = base + OPREGION_SWSCI_OFFSET;
1008 swsci_setup(dev_priv);
1009 }
1010
1011 if (mboxes & MBOX_ASLE) {
1012 DRM_DEBUG_DRIVER("ASLE supported\n");
1013 opregion->asle = base + OPREGION_ASLE_OFFSET;
1014
1015 opregion->asle->ardy = ASLE_ARDY_NOT_READY;
1016 }
1017
1018 if (mboxes & MBOX_ASLE_EXT)
1019 DRM_DEBUG_DRIVER("ASLE extension supported\n");
1020
1021 if (intel_load_vbt_firmware(dev_priv) == 0)
1022 goto out;
1023
1024 if (dmi_check_system(intel_no_opregion_vbt))
1025 goto out;
1026
1027 if (opregion->header->opregion_ver >= 2 && opregion->asle &&
1028 opregion->asle->rvda && opregion->asle->rvds) {
1029 opregion->rvda = memremap(opregion->asle->rvda,
1030 opregion->asle->rvds,
1031 MEMREMAP_WB);
1032 vbt = opregion->rvda;
1033 vbt_size = opregion->asle->rvds;
1034 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1035 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (RVDA)\n");
1036 opregion->vbt = vbt;
1037 opregion->vbt_size = vbt_size;
1038 goto out;
1039 } else {
1040 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (RVDA)\n");
1041 }
1042 }
1043
1044 vbt = base + OPREGION_VBT_OFFSET;
1045 /*
1046 * The VBT specification says that if the ASLE ext mailbox is not used
1047 * its area is reserved, but on some CHT boards the VBT extends into the
1048 * ASLE ext area. Allow this even though it is against the spec, so we
1049 * do not end up rejecting the VBT on those boards (and end up not
1050 * finding the LCD panel because of this).
1051 */
1052 vbt_size = (mboxes & MBOX_ASLE_EXT) ?
1053 OPREGION_ASLE_EXT_OFFSET : OPREGION_SIZE;
1054 vbt_size -= OPREGION_VBT_OFFSET;
1055 if (intel_bios_is_valid_vbt(vbt, vbt_size)) {
1056 DRM_DEBUG_KMS("Found valid VBT in ACPI OpRegion (Mailbox #4)\n");
1057 opregion->vbt = vbt;
1058 opregion->vbt_size = vbt_size;
1059 } else {
1060 DRM_DEBUG_KMS("Invalid VBT in ACPI OpRegion (Mailbox #4)\n");
1061 }
1062
1063out:
1064 return 0;
1065
1066err_out:
1067 memunmap(base);
1068 return err;
1069}
1070
1071static int intel_use_opregion_panel_type_callback(const struct dmi_system_id *id)
1072{
1073 DRM_INFO("Using panel type from OpRegion on %s\n", id->ident);
1074 return 1;
1075}
1076
1077static const struct dmi_system_id intel_use_opregion_panel_type[] = {
1078 {
1079 .callback = intel_use_opregion_panel_type_callback,
1080 .ident = "Conrac GmbH IX45GM2",
1081 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "Conrac GmbH"),
1082 DMI_MATCH(DMI_PRODUCT_NAME, "IX45GM2"),
1083 },
1084 },
1085 { }
1086};
1087
1088int
1089intel_opregion_get_panel_type(struct drm_i915_private *dev_priv)
1090{
1091 u32 panel_details;
1092 int ret;
1093
1094 ret = swsci(dev_priv, SWSCI_GBDA_PANEL_DETAILS, 0x0, &panel_details);
1095 if (ret) {
1096 DRM_DEBUG_KMS("Failed to get panel details from OpRegion (%d)\n",
1097 ret);
1098 return ret;
1099 }
1100
1101 ret = (panel_details >> 8) & 0xff;
1102 if (ret > 0x10) {
1103 DRM_DEBUG_KMS("Invalid OpRegion panel type 0x%x\n", ret);
1104 return -EINVAL;
1105 }
1106
1107 /* fall back to VBT panel type? */
1108 if (ret == 0x0) {
1109 DRM_DEBUG_KMS("No panel type in OpRegion\n");
1110 return -ENODEV;
1111 }
1112
1113 /*
1114 * So far we know that some machined must use it, others must not use it.
1115 * There doesn't seem to be any way to determine which way to go, except
1116 * via a quirk list :(
1117 */
1118 if (!dmi_check_system(intel_use_opregion_panel_type)) {
1119 DRM_DEBUG_KMS("Ignoring OpRegion panel type (%d)\n", ret - 1);
1120 return -ENODEV;
1121 }
1122
1123 return ret - 1;
1124}