Line data Source code
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 : #ifdef __linux__
29 : #include <linux/acpi.h>
30 : #include <acpi/video.h>
31 : #endif
32 :
33 : #include <dev/pci/drm/drmP.h>
34 : #include <dev/pci/drm/i915_drm.h>
35 : #include "i915_drv.h"
36 : #include "intel_drv.h"
37 :
38 : #define PCI_ASLE 0xe4
39 : #define PCI_ASLS 0xfc
40 : #define PCI_SWSCI 0xe8
41 : #define PCI_SWSCI_SCISEL (1 << 15)
42 : #define PCI_SWSCI_GSSCIE (1 << 0)
43 :
44 : #define OPREGION_HEADER_OFFSET 0
45 : #define OPREGION_ACPI_OFFSET 0x100
46 : #define ACPI_CLID 0x01ac /* current lid state indicator */
47 : #define ACPI_CDCK 0x01b0 /* current docking state indicator */
48 : #define OPREGION_SWSCI_OFFSET 0x200
49 : #define OPREGION_ASLE_OFFSET 0x300
50 : #define OPREGION_VBT_OFFSET 0x400
51 :
52 : #define OPREGION_SIGNATURE "IntelGraphicsMem"
53 : #define MBOX_ACPI (1<<0)
54 : #define MBOX_SWSCI (1<<1)
55 : #define MBOX_ASLE (1<<2)
56 : #define MBOX_ASLE_EXT (1<<4)
57 :
58 : struct opregion_header {
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 : u32 driver_model;
67 : u32 pcon;
68 : u8 dver[32];
69 : u8 rsvd[124];
70 : } __packed;
71 :
72 : /* OpRegion mailbox #1: public ACPI methods */
73 : struct opregion_acpi {
74 : u32 drdy; /* driver readiness */
75 : u32 csts; /* notification status */
76 : u32 cevt; /* current event */
77 : u8 rsvd1[20];
78 : u32 didl[8]; /* supported display devices ID list */
79 : u32 cpdl[8]; /* currently presented display list */
80 : u32 cadl[8]; /* currently active display list */
81 : u32 nadl[8]; /* next active devices list */
82 : u32 aslp; /* ASL sleep time-out */
83 : u32 tidx; /* toggle table index */
84 : u32 chpd; /* current hotplug enable indicator */
85 : u32 clid; /* current lid state*/
86 : u32 cdck; /* current docking state */
87 : u32 sxsw; /* Sx state resume */
88 : u32 evts; /* ASL supported events */
89 : u32 cnot; /* current OS notification */
90 : u32 nrdy; /* driver status */
91 : u32 did2[7]; /* extended supported display devices ID list */
92 : u32 cpd2[7]; /* extended attached display devices list */
93 : u8 rsvd2[4];
94 : } __packed;
95 :
96 : /* OpRegion mailbox #2: SWSCI */
97 : struct opregion_swsci {
98 : u32 scic; /* SWSCI command|status|data */
99 : u32 parm; /* command parameters */
100 : u32 dslp; /* driver sleep time-out */
101 : u8 rsvd[244];
102 : } __packed;
103 :
104 : /* OpRegion mailbox #3: ASLE */
105 : struct opregion_asle {
106 : u32 ardy; /* driver readiness */
107 : u32 aslc; /* ASLE interrupt command */
108 : u32 tche; /* technology enabled indicator */
109 : u32 alsi; /* current ALS illuminance reading */
110 : u32 bclp; /* backlight brightness to set */
111 : u32 pfit; /* panel fitting state */
112 : u32 cblv; /* current brightness level */
113 : u16 bclm[20]; /* backlight level duty cycle mapping table */
114 : u32 cpfm; /* current panel fitting mode */
115 : u32 epfm; /* enabled panel fitting modes */
116 : u8 plut[74]; /* panel LUT and identifier */
117 : u32 pfmb; /* PWM freq and min brightness */
118 : u32 cddv; /* color correction default values */
119 : u32 pcft; /* power conservation features */
120 : u32 srot; /* supported rotation angles */
121 : u32 iuer; /* IUER events */
122 : u64 fdss;
123 : u32 fdsp;
124 : u32 stat;
125 : u8 rsvd[70];
126 : } __packed;
127 :
128 : /* Driver readiness indicator */
129 : #define ASLE_ARDY_READY (1 << 0)
130 : #define ASLE_ARDY_NOT_READY (0 << 0)
131 :
132 : /* ASLE Interrupt Command (ASLC) bits */
133 : #define ASLC_SET_ALS_ILLUM (1 << 0)
134 : #define ASLC_SET_BACKLIGHT (1 << 1)
135 : #define ASLC_SET_PFIT (1 << 2)
136 : #define ASLC_SET_PWM_FREQ (1 << 3)
137 : #define ASLC_SUPPORTED_ROTATION_ANGLES (1 << 4)
138 : #define ASLC_BUTTON_ARRAY (1 << 5)
139 : #define ASLC_CONVERTIBLE_INDICATOR (1 << 6)
140 : #define ASLC_DOCKING_INDICATOR (1 << 7)
141 : #define ASLC_ISCT_STATE_CHANGE (1 << 8)
142 : #define ASLC_REQ_MSK 0x1ff
143 : /* response bits */
144 : #define ASLC_ALS_ILLUM_FAILED (1 << 10)
145 : #define ASLC_BACKLIGHT_FAILED (1 << 12)
146 : #define ASLC_PFIT_FAILED (1 << 14)
147 : #define ASLC_PWM_FREQ_FAILED (1 << 16)
148 : #define ASLC_ROTATION_ANGLES_FAILED (1 << 18)
149 : #define ASLC_BUTTON_ARRAY_FAILED (1 << 20)
150 : #define ASLC_CONVERTIBLE_FAILED (1 << 22)
151 : #define ASLC_DOCKING_FAILED (1 << 24)
152 : #define ASLC_ISCT_STATE_FAILED (1 << 26)
153 :
154 : /* Technology enabled indicator */
155 : #define ASLE_TCHE_ALS_EN (1 << 0)
156 : #define ASLE_TCHE_BLC_EN (1 << 1)
157 : #define ASLE_TCHE_PFIT_EN (1 << 2)
158 : #define ASLE_TCHE_PFMB_EN (1 << 3)
159 :
160 : /* ASLE backlight brightness to set */
161 : #define ASLE_BCLP_VALID (1<<31)
162 : #define ASLE_BCLP_MSK (~(1<<31))
163 :
164 : /* ASLE panel fitting request */
165 : #define ASLE_PFIT_VALID (1<<31)
166 : #define ASLE_PFIT_CENTER (1<<0)
167 : #define ASLE_PFIT_STRETCH_TEXT (1<<1)
168 : #define ASLE_PFIT_STRETCH_GFX (1<<2)
169 :
170 : /* PWM frequency and minimum brightness */
171 : #define ASLE_PFMB_BRIGHTNESS_MASK (0xff)
172 : #define ASLE_PFMB_BRIGHTNESS_VALID (1<<8)
173 : #define ASLE_PFMB_PWM_MASK (0x7ffffe00)
174 : #define ASLE_PFMB_PWM_VALID (1<<31)
175 :
176 : #define ASLE_CBLV_VALID (1<<31)
177 :
178 : /* IUER */
179 : #define ASLE_IUER_DOCKING (1 << 7)
180 : #define ASLE_IUER_CONVERTIBLE (1 << 6)
181 : #define ASLE_IUER_ROTATION_LOCK_BTN (1 << 4)
182 : #define ASLE_IUER_VOLUME_DOWN_BTN (1 << 3)
183 : #define ASLE_IUER_VOLUME_UP_BTN (1 << 2)
184 : #define ASLE_IUER_WINDOWS_BTN (1 << 1)
185 : #define ASLE_IUER_POWER_BTN (1 << 0)
186 :
187 : /* Software System Control Interrupt (SWSCI) */
188 : #define SWSCI_SCIC_INDICATOR (1 << 0)
189 : #define SWSCI_SCIC_MAIN_FUNCTION_SHIFT 1
190 : #define SWSCI_SCIC_MAIN_FUNCTION_MASK (0xf << 1)
191 : #define SWSCI_SCIC_SUB_FUNCTION_SHIFT 8
192 : #define SWSCI_SCIC_SUB_FUNCTION_MASK (0xff << 8)
193 : #define SWSCI_SCIC_EXIT_PARAMETER_SHIFT 8
194 : #define SWSCI_SCIC_EXIT_PARAMETER_MASK (0xff << 8)
195 : #define SWSCI_SCIC_EXIT_STATUS_SHIFT 5
196 : #define SWSCI_SCIC_EXIT_STATUS_MASK (7 << 5)
197 : #define SWSCI_SCIC_EXIT_STATUS_SUCCESS 1
198 :
199 : #define SWSCI_FUNCTION_CODE(main, sub) \
200 : ((main) << SWSCI_SCIC_MAIN_FUNCTION_SHIFT | \
201 : (sub) << SWSCI_SCIC_SUB_FUNCTION_SHIFT)
202 :
203 : /* SWSCI: Get BIOS Data (GBDA) */
204 : #define SWSCI_GBDA 4
205 : #define SWSCI_GBDA_SUPPORTED_CALLS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 0)
206 : #define SWSCI_GBDA_REQUESTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 1)
207 : #define SWSCI_GBDA_BOOT_DISPLAY_PREF SWSCI_FUNCTION_CODE(SWSCI_GBDA, 4)
208 : #define SWSCI_GBDA_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 5)
209 : #define SWSCI_GBDA_TV_STANDARD SWSCI_FUNCTION_CODE(SWSCI_GBDA, 6)
210 : #define SWSCI_GBDA_INTERNAL_GRAPHICS SWSCI_FUNCTION_CODE(SWSCI_GBDA, 7)
211 : #define SWSCI_GBDA_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_GBDA, 10)
212 :
213 : /* SWSCI: System BIOS Callbacks (SBCB) */
214 : #define SWSCI_SBCB 6
215 : #define SWSCI_SBCB_SUPPORTED_CALLBACKS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 0)
216 : #define SWSCI_SBCB_INIT_COMPLETION SWSCI_FUNCTION_CODE(SWSCI_SBCB, 1)
217 : #define SWSCI_SBCB_PRE_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 3)
218 : #define SWSCI_SBCB_POST_HIRES_SET_MODE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 4)
219 : #define SWSCI_SBCB_DISPLAY_SWITCH SWSCI_FUNCTION_CODE(SWSCI_SBCB, 5)
220 : #define SWSCI_SBCB_SET_TV_FORMAT SWSCI_FUNCTION_CODE(SWSCI_SBCB, 6)
221 : #define SWSCI_SBCB_ADAPTER_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 7)
222 : #define SWSCI_SBCB_DISPLAY_POWER_STATE SWSCI_FUNCTION_CODE(SWSCI_SBCB, 8)
223 : #define SWSCI_SBCB_SET_BOOT_DISPLAY SWSCI_FUNCTION_CODE(SWSCI_SBCB, 9)
224 : #define SWSCI_SBCB_SET_PANEL_DETAILS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 10)
225 : #define SWSCI_SBCB_SET_INTERNAL_GFX SWSCI_FUNCTION_CODE(SWSCI_SBCB, 11)
226 : #define SWSCI_SBCB_POST_HIRES_TO_DOS_FS SWSCI_FUNCTION_CODE(SWSCI_SBCB, 16)
227 : #define SWSCI_SBCB_SUSPEND_RESUME SWSCI_FUNCTION_CODE(SWSCI_SBCB, 17)
228 : #define SWSCI_SBCB_SET_SPREAD_SPECTRUM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 18)
229 : #define SWSCI_SBCB_POST_VBE_PM SWSCI_FUNCTION_CODE(SWSCI_SBCB, 19)
230 : #define SWSCI_SBCB_ENABLE_DISABLE_AUDIO SWSCI_FUNCTION_CODE(SWSCI_SBCB, 21)
231 :
232 : #define ACPI_OTHER_OUTPUT (0<<8)
233 : #define ACPI_VGA_OUTPUT (1<<8)
234 : #define ACPI_TV_OUTPUT (2<<8)
235 : #define ACPI_DIGITAL_OUTPUT (3<<8)
236 : #define ACPI_LVDS_OUTPUT (4<<8)
237 :
238 : #define MAX_DSLP 1500
239 :
240 : #ifdef CONFIG_ACPI
241 0 : static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out)
242 : {
243 0 : struct drm_i915_private *dev_priv = dev->dev_private;
244 0 : struct opregion_swsci *swsci = dev_priv->opregion.swsci;
245 : u32 main_function, sub_function, scic;
246 0 : u16 pci_swsci;
247 : u32 dslp;
248 :
249 0 : if (!swsci)
250 0 : return -ENODEV;
251 :
252 0 : main_function = (function & SWSCI_SCIC_MAIN_FUNCTION_MASK) >>
253 : SWSCI_SCIC_MAIN_FUNCTION_SHIFT;
254 0 : sub_function = (function & SWSCI_SCIC_SUB_FUNCTION_MASK) >>
255 : SWSCI_SCIC_SUB_FUNCTION_SHIFT;
256 :
257 : /* Check if we can call the function. See swsci_setup for details. */
258 0 : if (main_function == SWSCI_SBCB) {
259 0 : if ((dev_priv->opregion.swsci_sbcb_sub_functions &
260 0 : (1 << sub_function)) == 0)
261 0 : return -EINVAL;
262 0 : } else if (main_function == SWSCI_GBDA) {
263 0 : if ((dev_priv->opregion.swsci_gbda_sub_functions &
264 0 : (1 << sub_function)) == 0)
265 0 : return -EINVAL;
266 : }
267 :
268 : /* Driver sleep timeout in ms. */
269 0 : dslp = swsci->dslp;
270 0 : if (!dslp) {
271 : /* The spec says 2ms should be the default, but it's too small
272 : * for some machines. */
273 : dslp = 50;
274 0 : } else if (dslp > MAX_DSLP) {
275 : /* Hey bios, trust must be earned. */
276 : DRM_INFO_ONCE("ACPI BIOS requests an excessive sleep of %u ms, "
277 : "using %u ms instead\n", dslp, MAX_DSLP);
278 : dslp = MAX_DSLP;
279 0 : }
280 :
281 : /* The spec tells us to do this, but we are the only user... */
282 0 : scic = swsci->scic;
283 0 : if (scic & SWSCI_SCIC_INDICATOR) {
284 : DRM_DEBUG_DRIVER("SWSCI request already in progress\n");
285 0 : return -EBUSY;
286 : }
287 :
288 0 : scic = function | SWSCI_SCIC_INDICATOR;
289 :
290 0 : swsci->parm = parm;
291 0 : swsci->scic = scic;
292 :
293 : /* Ensure SCI event is selected and event trigger is cleared. */
294 0 : pci_read_config_word(dev->pdev, PCI_SWSCI, &pci_swsci);
295 0 : if (!(pci_swsci & PCI_SWSCI_SCISEL) || (pci_swsci & PCI_SWSCI_GSSCIE)) {
296 0 : pci_swsci |= PCI_SWSCI_SCISEL;
297 0 : pci_swsci &= ~PCI_SWSCI_GSSCIE;
298 0 : pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
299 0 : }
300 :
301 : /* Use event trigger to tell bios to check the mail. */
302 0 : pci_swsci |= PCI_SWSCI_GSSCIE;
303 0 : pci_write_config_word(dev->pdev, PCI_SWSCI, pci_swsci);
304 :
305 : /* Poll for the result. */
306 : #define C (((scic = swsci->scic) & SWSCI_SCIC_INDICATOR) == 0)
307 0 : if (wait_for(C, dslp)) {
308 : DRM_DEBUG_DRIVER("SWSCI request timed out\n");
309 0 : return -ETIMEDOUT;
310 : }
311 :
312 0 : scic = (scic & SWSCI_SCIC_EXIT_STATUS_MASK) >>
313 : SWSCI_SCIC_EXIT_STATUS_SHIFT;
314 :
315 : /* Note: scic == 0 is an error! */
316 0 : if (scic != SWSCI_SCIC_EXIT_STATUS_SUCCESS) {
317 : DRM_DEBUG_DRIVER("SWSCI request error %u\n", scic);
318 0 : return -EIO;
319 : }
320 :
321 0 : if (parm_out)
322 0 : *parm_out = swsci->parm;
323 :
324 0 : return 0;
325 :
326 : #undef C
327 0 : }
328 :
329 : #define DISPLAY_TYPE_CRT 0
330 : #define DISPLAY_TYPE_TV 1
331 : #define DISPLAY_TYPE_EXTERNAL_FLAT_PANEL 2
332 : #define DISPLAY_TYPE_INTERNAL_FLAT_PANEL 3
333 :
334 0 : int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
335 : bool enable)
336 : {
337 0 : struct drm_device *dev = intel_encoder->base.dev;
338 : u32 parm = 0;
339 : u32 type = 0;
340 : u32 port;
341 :
342 : /* don't care about old stuff for now */
343 0 : if (!HAS_DDI(dev))
344 0 : return 0;
345 :
346 0 : if (intel_encoder->type == INTEL_OUTPUT_DSI)
347 0 : port = 0;
348 : else
349 0 : port = intel_ddi_get_encoder_port(intel_encoder);
350 :
351 0 : if (port == PORT_E) {
352 : port = 0;
353 0 : } else {
354 0 : parm |= 1 << port;
355 0 : port++;
356 : }
357 :
358 0 : if (!enable)
359 0 : parm |= 4 << 8;
360 :
361 0 : switch (intel_encoder->type) {
362 : case INTEL_OUTPUT_ANALOG:
363 : type = DISPLAY_TYPE_CRT;
364 0 : break;
365 : case INTEL_OUTPUT_UNKNOWN:
366 : case INTEL_OUTPUT_DISPLAYPORT:
367 : case INTEL_OUTPUT_HDMI:
368 : case INTEL_OUTPUT_DP_MST:
369 : type = DISPLAY_TYPE_EXTERNAL_FLAT_PANEL;
370 0 : break;
371 : case INTEL_OUTPUT_EDP:
372 : case INTEL_OUTPUT_DSI:
373 : type = DISPLAY_TYPE_INTERNAL_FLAT_PANEL;
374 0 : break;
375 : default:
376 0 : WARN_ONCE(1, "unsupported intel_encoder type %d\n",
377 : intel_encoder->type);
378 0 : return -EINVAL;
379 : }
380 :
381 0 : parm |= type << (16 + port * 3);
382 :
383 0 : return swsci(dev, SWSCI_SBCB_DISPLAY_POWER_STATE, parm, NULL);
384 0 : }
385 :
386 : static const struct {
387 : pci_power_t pci_power_state;
388 : u32 parm;
389 : } power_state_map[] = {
390 : { PCI_D0, 0x00 },
391 : { PCI_D1, 0x01 },
392 : { PCI_D2, 0x02 },
393 : { PCI_D3hot, 0x04 },
394 : { PCI_D3cold, 0x04 },
395 : };
396 :
397 0 : int intel_opregion_notify_adapter(struct drm_device *dev, pci_power_t state)
398 : {
399 : int i;
400 :
401 0 : if (!HAS_DDI(dev))
402 0 : return 0;
403 :
404 0 : for (i = 0; i < ARRAY_SIZE(power_state_map); i++) {
405 0 : if (state == power_state_map[i].pci_power_state)
406 0 : return swsci(dev, SWSCI_SBCB_ADAPTER_POWER_STATE,
407 0 : power_state_map[i].parm, NULL);
408 : }
409 :
410 0 : return -EINVAL;
411 0 : }
412 :
413 0 : static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
414 : {
415 0 : struct drm_i915_private *dev_priv = dev->dev_private;
416 : struct intel_connector *intel_connector;
417 0 : struct opregion_asle *asle = dev_priv->opregion.asle;
418 :
419 : DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp);
420 :
421 : #ifdef __linux__
422 : if (acpi_video_get_backlight_type() == acpi_backlight_native) {
423 : DRM_DEBUG_KMS("opregion backlight request ignored\n");
424 : return 0;
425 : }
426 : #endif
427 :
428 0 : if (!(bclp & ASLE_BCLP_VALID))
429 0 : return ASLC_BACKLIGHT_FAILED;
430 :
431 0 : bclp &= ASLE_BCLP_MSK;
432 0 : if (bclp > 255)
433 0 : return ASLC_BACKLIGHT_FAILED;
434 :
435 0 : drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
436 :
437 : /*
438 : * Update backlight on all connectors that support backlight (usually
439 : * only one).
440 : */
441 : DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp);
442 0 : list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head)
443 0 : intel_panel_set_backlight_acpi(intel_connector, bclp, 255);
444 0 : asle->cblv = DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID;
445 :
446 0 : drm_modeset_unlock(&dev->mode_config.connection_mutex);
447 :
448 :
449 0 : return 0;
450 0 : }
451 :
452 0 : static u32 asle_set_als_illum(struct drm_device *dev, u32 alsi)
453 : {
454 : /* alsi is the current ALS reading in lux. 0 indicates below sensor
455 : range, 0xffff indicates above sensor range. 1-0xfffe are valid */
456 : DRM_DEBUG_DRIVER("Illum is not supported\n");
457 0 : return ASLC_ALS_ILLUM_FAILED;
458 : }
459 :
460 0 : static u32 asle_set_pwm_freq(struct drm_device *dev, u32 pfmb)
461 : {
462 : DRM_DEBUG_DRIVER("PWM freq is not supported\n");
463 0 : return ASLC_PWM_FREQ_FAILED;
464 : }
465 :
466 0 : static u32 asle_set_pfit(struct drm_device *dev, u32 pfit)
467 : {
468 : /* Panel fitting is currently controlled by the X code, so this is a
469 : noop until modesetting support works fully */
470 : DRM_DEBUG_DRIVER("Pfit is not supported\n");
471 0 : return ASLC_PFIT_FAILED;
472 : }
473 :
474 0 : static u32 asle_set_supported_rotation_angles(struct drm_device *dev, u32 srot)
475 : {
476 : DRM_DEBUG_DRIVER("SROT is not supported\n");
477 0 : return ASLC_ROTATION_ANGLES_FAILED;
478 : }
479 :
480 0 : static u32 asle_set_button_array(struct drm_device *dev, u32 iuer)
481 : {
482 : if (!iuer)
483 : DRM_DEBUG_DRIVER("Button array event is not supported (nothing)\n");
484 0 : if (iuer & ASLE_IUER_ROTATION_LOCK_BTN)
485 : DRM_DEBUG_DRIVER("Button array event is not supported (rotation lock)\n");
486 0 : if (iuer & ASLE_IUER_VOLUME_DOWN_BTN)
487 : DRM_DEBUG_DRIVER("Button array event is not supported (volume down)\n");
488 0 : if (iuer & ASLE_IUER_VOLUME_UP_BTN)
489 : DRM_DEBUG_DRIVER("Button array event is not supported (volume up)\n");
490 0 : if (iuer & ASLE_IUER_WINDOWS_BTN)
491 : DRM_DEBUG_DRIVER("Button array event is not supported (windows)\n");
492 0 : if (iuer & ASLE_IUER_POWER_BTN)
493 : DRM_DEBUG_DRIVER("Button array event is not supported (power)\n");
494 :
495 0 : return ASLC_BUTTON_ARRAY_FAILED;
496 : }
497 :
498 0 : static u32 asle_set_convertible(struct drm_device *dev, u32 iuer)
499 : {
500 0 : if (iuer & ASLE_IUER_CONVERTIBLE)
501 : DRM_DEBUG_DRIVER("Convertible is not supported (clamshell)\n");
502 : else
503 : DRM_DEBUG_DRIVER("Convertible is not supported (slate)\n");
504 :
505 0 : return ASLC_CONVERTIBLE_FAILED;
506 : }
507 :
508 0 : static u32 asle_set_docking(struct drm_device *dev, u32 iuer)
509 : {
510 0 : if (iuer & ASLE_IUER_DOCKING)
511 : DRM_DEBUG_DRIVER("Docking is not supported (docked)\n");
512 : else
513 : DRM_DEBUG_DRIVER("Docking is not supported (undocked)\n");
514 :
515 0 : return ASLC_DOCKING_FAILED;
516 : }
517 :
518 0 : static u32 asle_isct_state(struct drm_device *dev)
519 : {
520 : DRM_DEBUG_DRIVER("ISCT is not supported\n");
521 0 : return ASLC_ISCT_STATE_FAILED;
522 : }
523 :
524 0 : static void asle_work(struct work_struct *work)
525 : {
526 : struct intel_opregion *opregion =
527 0 : container_of(work, struct intel_opregion, asle_work);
528 : struct drm_i915_private *dev_priv =
529 0 : container_of(opregion, struct drm_i915_private, opregion);
530 0 : struct drm_device *dev = dev_priv->dev;
531 0 : struct opregion_asle *asle = dev_priv->opregion.asle;
532 : u32 aslc_stat = 0;
533 : u32 aslc_req;
534 :
535 0 : if (!asle)
536 0 : return;
537 :
538 0 : aslc_req = asle->aslc;
539 :
540 0 : if (!(aslc_req & ASLC_REQ_MSK)) {
541 : DRM_DEBUG_DRIVER("No request on ASLC interrupt 0x%08x\n",
542 : aslc_req);
543 0 : return;
544 : }
545 :
546 0 : if (aslc_req & ASLC_SET_ALS_ILLUM)
547 0 : aslc_stat |= asle_set_als_illum(dev, asle->alsi);
548 :
549 0 : if (aslc_req & ASLC_SET_BACKLIGHT)
550 0 : aslc_stat |= asle_set_backlight(dev, asle->bclp);
551 :
552 0 : if (aslc_req & ASLC_SET_PFIT)
553 0 : aslc_stat |= asle_set_pfit(dev, asle->pfit);
554 :
555 0 : if (aslc_req & ASLC_SET_PWM_FREQ)
556 0 : aslc_stat |= asle_set_pwm_freq(dev, asle->pfmb);
557 :
558 0 : if (aslc_req & ASLC_SUPPORTED_ROTATION_ANGLES)
559 0 : aslc_stat |= asle_set_supported_rotation_angles(dev,
560 0 : asle->srot);
561 :
562 0 : if (aslc_req & ASLC_BUTTON_ARRAY)
563 0 : aslc_stat |= asle_set_button_array(dev, asle->iuer);
564 :
565 0 : if (aslc_req & ASLC_CONVERTIBLE_INDICATOR)
566 0 : aslc_stat |= asle_set_convertible(dev, asle->iuer);
567 :
568 0 : if (aslc_req & ASLC_DOCKING_INDICATOR)
569 0 : aslc_stat |= asle_set_docking(dev, asle->iuer);
570 :
571 0 : if (aslc_req & ASLC_ISCT_STATE_CHANGE)
572 0 : aslc_stat |= asle_isct_state(dev);
573 :
574 0 : asle->aslc = aslc_stat;
575 0 : }
576 :
577 0 : void intel_opregion_asle_intr(struct drm_device *dev)
578 : {
579 0 : struct drm_i915_private *dev_priv = dev->dev_private;
580 :
581 0 : if (dev_priv->opregion.asle)
582 0 : schedule_work(&dev_priv->opregion.asle_work);
583 0 : }
584 :
585 : #define ACPI_EV_DISPLAY_SWITCH (1<<0)
586 : #define ACPI_EV_LID (1<<1)
587 : #define ACPI_EV_DOCK (1<<2)
588 :
589 : static struct intel_opregion *system_opregion;
590 :
591 : #ifdef notyet
592 :
593 : static int intel_opregion_video_event(struct notifier_block *nb,
594 : unsigned long val, void *data)
595 : {
596 : /* The only video events relevant to opregion are 0x80. These indicate
597 : either a docking event, lid switch or display switch request. In
598 : Linux, these are handled by the dock, button and video drivers.
599 : */
600 :
601 : struct acpi_bus_event *event = data;
602 : struct opregion_acpi *acpi;
603 : int ret = NOTIFY_OK;
604 :
605 : if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0)
606 : return NOTIFY_DONE;
607 :
608 : if (!system_opregion)
609 : return NOTIFY_DONE;
610 :
611 : acpi = system_opregion->acpi;
612 :
613 : if (event->type == 0x80 && ((acpi->cevt & 1) == 0))
614 : ret = NOTIFY_BAD;
615 :
616 : acpi->csts = 0;
617 :
618 : return ret;
619 : }
620 :
621 : static struct notifier_block intel_opregion_notifier = {
622 : .notifier_call = intel_opregion_video_event,
623 : };
624 :
625 : /*
626 : * Initialise the DIDL field in opregion. This passes a list of devices to
627 : * the firmware. Values are defined by section B.4.2 of the ACPI specification
628 : * (version 3)
629 : */
630 :
631 : static u32 get_did(struct intel_opregion *opregion, int i)
632 : {
633 : u32 did;
634 :
635 : if (i < ARRAY_SIZE(opregion->acpi->didl)) {
636 : did = opregion->acpi->didl[i];
637 : } else {
638 : i -= ARRAY_SIZE(opregion->acpi->didl);
639 :
640 : if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
641 : return 0;
642 :
643 : did = opregion->acpi->did2[i];
644 : }
645 :
646 : return did;
647 : }
648 :
649 : static void set_did(struct intel_opregion *opregion, int i, u32 val)
650 : {
651 : if (i < ARRAY_SIZE(opregion->acpi->didl)) {
652 : opregion->acpi->didl[i] = val;
653 : } else {
654 : i -= ARRAY_SIZE(opregion->acpi->didl);
655 :
656 : if (WARN_ON(i >= ARRAY_SIZE(opregion->acpi->did2)))
657 : return;
658 :
659 : opregion->acpi->did2[i] = val;
660 : }
661 : }
662 :
663 : static void intel_didl_outputs(struct drm_device *dev)
664 : {
665 : struct drm_i915_private *dev_priv = dev->dev_private;
666 : struct intel_opregion *opregion = &dev_priv->opregion;
667 : struct drm_connector *connector;
668 : acpi_handle handle;
669 : struct acpi_device *acpi_dev, *acpi_cdev, *acpi_video_bus = NULL;
670 : unsigned long long device_id;
671 : acpi_status status;
672 : u32 temp, max_outputs;
673 : int i = 0;
674 :
675 : handle = ACPI_HANDLE(&dev->pdev->dev);
676 : if (!handle || acpi_bus_get_device(handle, &acpi_dev))
677 : return;
678 :
679 : if (acpi_is_video_device(handle))
680 : acpi_video_bus = acpi_dev;
681 : else {
682 : list_for_each_entry(acpi_cdev, &acpi_dev->children, node) {
683 : if (acpi_is_video_device(acpi_cdev->handle)) {
684 : acpi_video_bus = acpi_cdev;
685 : break;
686 : }
687 : }
688 : }
689 :
690 : if (!acpi_video_bus) {
691 : DRM_DEBUG_KMS("No ACPI video bus found\n");
692 : return;
693 : }
694 :
695 : /*
696 : * In theory, did2, the extended didl, gets added at opregion version
697 : * 3.0. In practice, however, we're supposed to set it for earlier
698 : * versions as well, since a BIOS that doesn't understand did2 should
699 : * not look at it anyway. Use a variable so we can tweak this if a need
700 : * arises later.
701 : */
702 : max_outputs = ARRAY_SIZE(opregion->acpi->didl) +
703 : ARRAY_SIZE(opregion->acpi->did2);
704 :
705 : list_for_each_entry(acpi_cdev, &acpi_video_bus->children, node) {
706 : if (i >= max_outputs) {
707 : DRM_DEBUG_KMS("More than %u outputs detected via ACPI\n",
708 : max_outputs);
709 : return;
710 : }
711 : status = acpi_evaluate_integer(acpi_cdev->handle, "_ADR",
712 : NULL, &device_id);
713 : if (ACPI_SUCCESS(status)) {
714 : if (!device_id)
715 : goto blind_set;
716 : set_did(opregion, i++, (u32)(device_id & 0x0f0f));
717 : }
718 : }
719 :
720 : end:
721 : DRM_DEBUG_KMS("%d outputs detected\n", i);
722 :
723 : /* If fewer than max outputs, the list must be null terminated */
724 : if (i < max_outputs)
725 : set_did(opregion, i, 0);
726 : return;
727 :
728 : blind_set:
729 : i = 0;
730 : list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
731 : int output_type = ACPI_OTHER_OUTPUT;
732 : if (i >= max_outputs) {
733 : DRM_DEBUG_KMS("More than %u outputs in connector list\n",
734 : max_outputs);
735 : return;
736 : }
737 : switch (connector->connector_type) {
738 : case DRM_MODE_CONNECTOR_VGA:
739 : case DRM_MODE_CONNECTOR_DVIA:
740 : output_type = ACPI_VGA_OUTPUT;
741 : break;
742 : case DRM_MODE_CONNECTOR_Composite:
743 : case DRM_MODE_CONNECTOR_SVIDEO:
744 : case DRM_MODE_CONNECTOR_Component:
745 : case DRM_MODE_CONNECTOR_9PinDIN:
746 : output_type = ACPI_TV_OUTPUT;
747 : break;
748 : case DRM_MODE_CONNECTOR_DVII:
749 : case DRM_MODE_CONNECTOR_DVID:
750 : case DRM_MODE_CONNECTOR_DisplayPort:
751 : case DRM_MODE_CONNECTOR_HDMIA:
752 : case DRM_MODE_CONNECTOR_HDMIB:
753 : output_type = ACPI_DIGITAL_OUTPUT;
754 : break;
755 : case DRM_MODE_CONNECTOR_LVDS:
756 : output_type = ACPI_LVDS_OUTPUT;
757 : break;
758 : }
759 : temp = get_did(opregion, i);
760 : set_did(opregion, i, temp | (1 << 31) | output_type | i);
761 : i++;
762 : }
763 : goto end;
764 : }
765 :
766 : static void intel_setup_cadls(struct drm_device *dev)
767 : {
768 : struct drm_i915_private *dev_priv = dev->dev_private;
769 : struct intel_opregion *opregion = &dev_priv->opregion;
770 : int i = 0;
771 : u32 disp_id;
772 :
773 : /* Initialize the CADL field by duplicating the DIDL values.
774 : * Technically, this is not always correct as display outputs may exist,
775 : * but not active. This initialization is necessary for some Clevo
776 : * laptops that check this field before processing the brightness and
777 : * display switching hotkeys. Just like DIDL, CADL is NULL-terminated if
778 : * there are less than eight devices. */
779 : do {
780 : disp_id = get_did(opregion, i);
781 : opregion->acpi->cadl[i] = disp_id;
782 : } while (++i < 8 && disp_id != 0);
783 : }
784 :
785 : #endif
786 :
787 0 : void intel_opregion_init(struct drm_device *dev)
788 : {
789 0 : struct drm_i915_private *dev_priv = dev->dev_private;
790 0 : struct intel_opregion *opregion = &dev_priv->opregion;
791 :
792 0 : if (!opregion->header)
793 0 : return;
794 :
795 0 : if (opregion->acpi) {
796 : #ifdef notyet
797 : intel_didl_outputs(dev);
798 : intel_setup_cadls(dev);
799 : #endif
800 :
801 : /* Notify BIOS we are ready to handle ACPI video ext notifs.
802 : * Right now, all the events are handled by the ACPI video module.
803 : * We don't actually need to do anything with them. */
804 0 : opregion->acpi->csts = 0;
805 0 : opregion->acpi->drdy = 1;
806 :
807 0 : system_opregion = opregion;
808 : #ifdef notyet
809 : register_acpi_notifier(&intel_opregion_notifier);
810 : #endif
811 0 : }
812 :
813 0 : if (opregion->asle) {
814 0 : opregion->asle->tche = ASLE_TCHE_BLC_EN;
815 0 : opregion->asle->ardy = ASLE_ARDY_READY;
816 0 : }
817 0 : }
818 :
819 0 : void intel_opregion_fini(struct drm_device *dev)
820 : {
821 0 : struct drm_i915_private *dev_priv = dev->dev_private;
822 0 : struct intel_opregion *opregion = &dev_priv->opregion;
823 :
824 0 : if (!opregion->header)
825 0 : return;
826 :
827 0 : if (opregion->asle)
828 0 : opregion->asle->ardy = ASLE_ARDY_NOT_READY;
829 :
830 0 : cancel_work_sync(&dev_priv->opregion.asle_work);
831 :
832 0 : if (opregion->acpi) {
833 0 : opregion->acpi->drdy = 0;
834 :
835 0 : system_opregion = NULL;
836 : #ifdef notyet
837 : unregister_acpi_notifier(&intel_opregion_notifier);
838 : #endif
839 0 : }
840 :
841 : /* just clear all opregion memory pointers now */
842 : #ifdef __linux__
843 : memunmap(opregion->header);
844 : #else
845 0 : bus_space_unmap(dev_priv->bst, dev_priv->opregion_ioh, OPREGION_SIZE);
846 : #endif
847 0 : opregion->header = NULL;
848 0 : opregion->acpi = NULL;
849 0 : opregion->swsci = NULL;
850 0 : opregion->asle = NULL;
851 0 : opregion->vbt = NULL;
852 0 : opregion->lid_state = NULL;
853 0 : }
854 :
855 0 : static void swsci_setup(struct drm_device *dev)
856 : {
857 0 : struct drm_i915_private *dev_priv = dev->dev_private;
858 0 : struct intel_opregion *opregion = &dev_priv->opregion;
859 : bool requested_callbacks = false;
860 0 : u32 tmp;
861 :
862 : /* Sub-function code 0 is okay, let's allow them. */
863 0 : opregion->swsci_gbda_sub_functions = 1;
864 0 : opregion->swsci_sbcb_sub_functions = 1;
865 :
866 : /* We use GBDA to ask for supported GBDA calls. */
867 0 : if (swsci(dev, SWSCI_GBDA_SUPPORTED_CALLS, 0, &tmp) == 0) {
868 : /* make the bits match the sub-function codes */
869 0 : tmp <<= 1;
870 0 : opregion->swsci_gbda_sub_functions |= tmp;
871 0 : }
872 :
873 : /*
874 : * We also use GBDA to ask for _requested_ SBCB callbacks. The driver
875 : * must not call interfaces that are not specifically requested by the
876 : * bios.
877 : */
878 0 : if (swsci(dev, SWSCI_GBDA_REQUESTED_CALLBACKS, 0, &tmp) == 0) {
879 : /* here, the bits already match sub-function codes */
880 0 : opregion->swsci_sbcb_sub_functions |= tmp;
881 : requested_callbacks = true;
882 0 : }
883 :
884 : /*
885 : * But we use SBCB to ask for _supported_ SBCB calls. This does not mean
886 : * the callback is _requested_. But we still can't call interfaces that
887 : * are not requested.
888 : */
889 0 : if (swsci(dev, SWSCI_SBCB_SUPPORTED_CALLBACKS, 0, &tmp) == 0) {
890 : /* make the bits match the sub-function codes */
891 0 : u32 low = tmp & 0x7ff;
892 0 : u32 high = tmp & ~0xfff; /* bit 11 is reserved */
893 0 : tmp = (high << 4) | (low << 1) | 1;
894 :
895 : /* best guess what to do with supported wrt requested */
896 0 : if (requested_callbacks) {
897 0 : u32 req = opregion->swsci_sbcb_sub_functions;
898 0 : if ((req & tmp) != req)
899 : DRM_DEBUG_DRIVER("SWSCI BIOS requested (%08x) SBCB callbacks that are not supported (%08x)\n", req, tmp);
900 : /* XXX: for now, trust the requested callbacks */
901 : /* opregion->swsci_sbcb_sub_functions &= tmp; */
902 0 : } else {
903 0 : opregion->swsci_sbcb_sub_functions |= tmp;
904 : }
905 0 : }
906 :
907 : DRM_DEBUG_DRIVER("SWSCI GBDA callbacks %08x, SBCB callbacks %08x\n",
908 : opregion->swsci_gbda_sub_functions,
909 : opregion->swsci_sbcb_sub_functions);
910 0 : }
911 : #else /* CONFIG_ACPI */
912 : static inline void swsci_setup(struct drm_device *dev) {}
913 : #endif /* CONFIG_ACPI */
914 :
915 0 : int intel_opregion_setup(struct drm_device *dev)
916 : {
917 0 : struct drm_i915_private *dev_priv = dev->dev_private;
918 0 : struct intel_opregion *opregion = &dev_priv->opregion;
919 0 : u32 asls, mboxes;
920 0 : char buf[sizeof(OPREGION_SIGNATURE)];
921 : int err = 0;
922 : void *base;
923 :
924 : BUILD_BUG_ON(sizeof(struct opregion_header) != 0x100);
925 : BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
926 : BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
927 : BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
928 :
929 0 : pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
930 : DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
931 0 : if (asls == 0) {
932 : DRM_DEBUG_DRIVER("ACPI OpRegion not supported!\n");
933 0 : return -ENOTSUPP;
934 : }
935 :
936 : #ifdef CONFIG_ACPI
937 0 : INIT_WORK(&opregion->asle_work, asle_work);
938 : #endif
939 :
940 : #ifdef __linux
941 : base = memremap(asls, OPREGION_SIZE, MEMREMAP_WB);
942 : if (!base)
943 : return -ENOMEM;
944 : #else
945 0 : if (bus_space_map(dev_priv->bst, asls, OPREGION_SIZE,
946 0 : BUS_SPACE_MAP_LINEAR, &dev_priv->opregion_ioh))
947 0 : return -ENOMEM;
948 0 : base = bus_space_vaddr(dev_priv->bst, dev_priv->opregion_ioh);
949 : #endif
950 :
951 0 : memcpy(buf, base, sizeof(buf));
952 :
953 0 : if (memcmp(buf, OPREGION_SIGNATURE, 16)) {
954 : DRM_DEBUG_DRIVER("opregion signature mismatch\n");
955 : err = -EINVAL;
956 : goto err_out;
957 : }
958 0 : opregion->header = base;
959 0 : opregion->vbt = base + OPREGION_VBT_OFFSET;
960 :
961 0 : opregion->lid_state = base + ACPI_CLID;
962 :
963 0 : mboxes = opregion->header->mboxes;
964 0 : if (mboxes & MBOX_ACPI) {
965 : DRM_DEBUG_DRIVER("Public ACPI methods supported\n");
966 0 : opregion->acpi = base + OPREGION_ACPI_OFFSET;
967 0 : }
968 :
969 0 : if (mboxes & MBOX_SWSCI) {
970 : DRM_DEBUG_DRIVER("SWSCI supported\n");
971 0 : opregion->swsci = base + OPREGION_SWSCI_OFFSET;
972 0 : swsci_setup(dev);
973 0 : }
974 0 : if (mboxes & MBOX_ASLE) {
975 : DRM_DEBUG_DRIVER("ASLE supported\n");
976 0 : opregion->asle = base + OPREGION_ASLE_OFFSET;
977 :
978 0 : opregion->asle->ardy = ASLE_ARDY_NOT_READY;
979 0 : }
980 :
981 0 : return 0;
982 :
983 : err_out:
984 : #ifdef __linux__
985 : memunmap(base);
986 : #else
987 0 : bus_space_unmap(dev_priv->bst, dev_priv->opregion_ioh, OPREGION_SIZE);
988 : #endif
989 0 : return err;
990 0 : }
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