Commit | Line | Data |
---|---|---|
efd4e418 AD |
1 | /* |
2 | * Copyright 2012 Advanced Micro Devices, Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
20 | * OTHER DEALINGS IN THE SOFTWARE. | |
21 | * | |
22 | */ | |
23 | ||
d7a2952f AM |
24 | #include <linux/pci.h> |
25 | #include <linux/acpi.h> | |
26 | #include <linux/slab.h> | |
c4917074 | 27 | #include <linux/power_supply.h> |
fda4b25c | 28 | #include <acpi/video.h> |
760285e7 DH |
29 | #include <drm/drmP.h> |
30 | #include <drm/drm_crtc_helper.h> | |
d7a2952f | 31 | #include "radeon.h" |
9e05b2f4 | 32 | #include "radeon_acpi.h" |
fda4b25c | 33 | #include "atom.h" |
d7a2952f | 34 | |
c4917074 AD |
35 | #define ACPI_AC_CLASS "ac_adapter" |
36 | ||
37 | extern void radeon_pm_acpi_event_handler(struct radeon_device *rdev); | |
38 | ||
fd64ca8a LT |
39 | struct atif_verify_interface { |
40 | u16 size; /* structure size in bytes (includes size field) */ | |
41 | u16 version; /* version */ | |
42 | u32 notification_mask; /* supported notifications mask */ | |
43 | u32 function_bits; /* supported functions bit vector */ | |
44 | } __packed; | |
45 | ||
ce3cf821 | 46 | struct atif_system_params { |
fda4b25c LT |
47 | u16 size; /* structure size in bytes (includes size field) */ |
48 | u32 valid_mask; /* valid flags mask */ | |
49 | u32 flags; /* flags */ | |
50 | u8 command_code; /* notify command code */ | |
51 | } __packed; | |
52 | ||
53 | struct atif_sbios_requests { | |
54 | u16 size; /* structure size in bytes (includes size field) */ | |
55 | u32 pending; /* pending sbios requests */ | |
56 | u8 panel_exp_mode; /* panel expansion mode */ | |
57 | u8 thermal_gfx; /* thermal state: target gfx controller */ | |
58 | u8 thermal_state; /* thermal state: state id (0: exit state, non-0: state) */ | |
59 | u8 forced_power_gfx; /* forced power state: target gfx controller */ | |
60 | u8 forced_power_state; /* forced power state: state id */ | |
61 | u8 system_power_src; /* system power source */ | |
62 | u8 backlight_level; /* panel backlight level (0-255) */ | |
ce3cf821 LT |
63 | } __packed; |
64 | ||
65 | #define ATIF_NOTIFY_MASK 0x3 | |
66 | #define ATIF_NOTIFY_NONE 0 | |
67 | #define ATIF_NOTIFY_81 1 | |
68 | #define ATIF_NOTIFY_N 2 | |
69 | ||
e3a15920 AD |
70 | struct atcs_verify_interface { |
71 | u16 size; /* structure size in bytes (includes size field) */ | |
72 | u16 version; /* version */ | |
73 | u32 function_bits; /* supported functions bit vector */ | |
74 | } __packed; | |
75 | ||
e37e6a0e | 76 | #define ATCS_VALID_FLAGS_MASK 0x3 |
dc50ba7f | 77 | |
e37e6a0e AD |
78 | struct atcs_pref_req_input { |
79 | u16 size; /* structure size in bytes (includes size field) */ | |
80 | u16 client_id; /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ | |
81 | u16 valid_flags_mask; /* valid flags mask */ | |
82 | u16 flags; /* flags */ | |
83 | u8 req_type; /* request type */ | |
84 | u8 perf_req; /* performance request */ | |
85 | } __packed; | |
dc50ba7f | 86 | |
e37e6a0e AD |
87 | struct atcs_pref_req_output { |
88 | u16 size; /* structure size in bytes (includes size field) */ | |
89 | u8 ret_val; /* return value */ | |
90 | } __packed; | |
dc50ba7f | 91 | |
d7a2952f | 92 | /* Call the ATIF method |
d7a2952f | 93 | */ |
c3c65160 AD |
94 | /** |
95 | * radeon_atif_call - call an ATIF method | |
d7a2952f | 96 | * |
c3c65160 AD |
97 | * @handle: acpi handle |
98 | * @function: the ATIF function to execute | |
99 | * @params: ATIF function params | |
100 | * | |
101 | * Executes the requested ATIF function (all asics). | |
102 | * Returns a pointer to the acpi output buffer. | |
d7a2952f | 103 | */ |
86504672 LT |
104 | static union acpi_object *radeon_atif_call(acpi_handle handle, int function, |
105 | struct acpi_buffer *params) | |
d7a2952f AM |
106 | { |
107 | acpi_status status; | |
108 | union acpi_object atif_arg_elements[2]; | |
109 | struct acpi_object_list atif_arg; | |
86504672 | 110 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
d7a2952f AM |
111 | |
112 | atif_arg.count = 2; | |
113 | atif_arg.pointer = &atif_arg_elements[0]; | |
114 | ||
115 | atif_arg_elements[0].type = ACPI_TYPE_INTEGER; | |
86504672 LT |
116 | atif_arg_elements[0].integer.value = function; |
117 | ||
118 | if (params) { | |
119 | atif_arg_elements[1].type = ACPI_TYPE_BUFFER; | |
120 | atif_arg_elements[1].buffer.length = params->length; | |
121 | atif_arg_elements[1].buffer.pointer = params->pointer; | |
122 | } else { | |
123 | /* We need a second fake parameter */ | |
124 | atif_arg_elements[1].type = ACPI_TYPE_INTEGER; | |
125 | atif_arg_elements[1].integer.value = 0; | |
126 | } | |
d7a2952f AM |
127 | |
128 | status = acpi_evaluate_object(handle, "ATIF", &atif_arg, &buffer); | |
129 | ||
130 | /* Fail only if calling the method fails and ATIF is supported */ | |
131 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { | |
bc96f942 JD |
132 | DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n", |
133 | acpi_format_exception(status)); | |
d7a2952f | 134 | kfree(buffer.pointer); |
86504672 | 135 | return NULL; |
d7a2952f AM |
136 | } |
137 | ||
86504672 | 138 | return buffer.pointer; |
d7a2952f AM |
139 | } |
140 | ||
c3c65160 AD |
141 | /** |
142 | * radeon_atif_parse_notification - parse supported notifications | |
143 | * | |
144 | * @n: supported notifications struct | |
145 | * @mask: supported notifications mask from ATIF | |
146 | * | |
147 | * Use the supported notifications mask from ATIF function | |
148 | * ATIF_FUNCTION_VERIFY_INTERFACE to determine what notifications | |
149 | * are supported (all asics). | |
150 | */ | |
fd64ca8a LT |
151 | static void radeon_atif_parse_notification(struct radeon_atif_notifications *n, u32 mask) |
152 | { | |
153 | n->display_switch = mask & ATIF_DISPLAY_SWITCH_REQUEST_SUPPORTED; | |
154 | n->expansion_mode_change = mask & ATIF_EXPANSION_MODE_CHANGE_REQUEST_SUPPORTED; | |
155 | n->thermal_state = mask & ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED; | |
156 | n->forced_power_state = mask & ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED; | |
157 | n->system_power_state = mask & ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED; | |
158 | n->display_conf_change = mask & ATIF_DISPLAY_CONF_CHANGE_REQUEST_SUPPORTED; | |
159 | n->px_gfx_switch = mask & ATIF_PX_GFX_SWITCH_REQUEST_SUPPORTED; | |
160 | n->brightness_change = mask & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED; | |
161 | n->dgpu_display_event = mask & ATIF_DGPU_DISPLAY_EVENT_SUPPORTED; | |
162 | } | |
163 | ||
c3c65160 AD |
164 | /** |
165 | * radeon_atif_parse_functions - parse supported functions | |
166 | * | |
167 | * @f: supported functions struct | |
168 | * @mask: supported functions mask from ATIF | |
169 | * | |
170 | * Use the supported functions mask from ATIF function | |
171 | * ATIF_FUNCTION_VERIFY_INTERFACE to determine what functions | |
172 | * are supported (all asics). | |
173 | */ | |
fd64ca8a LT |
174 | static void radeon_atif_parse_functions(struct radeon_atif_functions *f, u32 mask) |
175 | { | |
176 | f->system_params = mask & ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED; | |
177 | f->sbios_requests = mask & ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED; | |
178 | f->select_active_disp = mask & ATIF_SELECT_ACTIVE_DISPLAYS_SUPPORTED; | |
179 | f->lid_state = mask & ATIF_GET_LID_STATE_SUPPORTED; | |
180 | f->get_tv_standard = mask & ATIF_GET_TV_STANDARD_FROM_CMOS_SUPPORTED; | |
181 | f->set_tv_standard = mask & ATIF_SET_TV_STANDARD_IN_CMOS_SUPPORTED; | |
182 | f->get_panel_expansion_mode = mask & ATIF_GET_PANEL_EXPANSION_MODE_FROM_CMOS_SUPPORTED; | |
183 | f->set_panel_expansion_mode = mask & ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED; | |
184 | f->temperature_change = mask & ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED; | |
185 | f->graphics_device_types = mask & ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED; | |
186 | } | |
187 | ||
c3c65160 AD |
188 | /** |
189 | * radeon_atif_verify_interface - verify ATIF | |
190 | * | |
191 | * @handle: acpi handle | |
192 | * @atif: radeon atif struct | |
193 | * | |
194 | * Execute the ATIF_FUNCTION_VERIFY_INTERFACE ATIF function | |
195 | * to initialize ATIF and determine what features are supported | |
196 | * (all asics). | |
197 | * returns 0 on success, error on failure. | |
198 | */ | |
fd64ca8a LT |
199 | static int radeon_atif_verify_interface(acpi_handle handle, |
200 | struct radeon_atif *atif) | |
201 | { | |
202 | union acpi_object *info; | |
203 | struct atif_verify_interface output; | |
204 | size_t size; | |
205 | int err = 0; | |
206 | ||
207 | info = radeon_atif_call(handle, ATIF_FUNCTION_VERIFY_INTERFACE, NULL); | |
208 | if (!info) | |
209 | return -EIO; | |
210 | ||
211 | memset(&output, 0, sizeof(output)); | |
212 | ||
213 | size = *(u16 *) info->buffer.pointer; | |
214 | if (size < 12) { | |
a1871936 | 215 | DRM_INFO("ATIF buffer is too small: %zu\n", size); |
fd64ca8a LT |
216 | err = -EINVAL; |
217 | goto out; | |
218 | } | |
219 | size = min(sizeof(output), size); | |
220 | ||
221 | memcpy(&output, info->buffer.pointer, size); | |
222 | ||
223 | /* TODO: check version? */ | |
224 | DRM_DEBUG_DRIVER("ATIF version %u\n", output.version); | |
225 | ||
226 | radeon_atif_parse_notification(&atif->notifications, output.notification_mask); | |
227 | radeon_atif_parse_functions(&atif->functions, output.function_bits); | |
228 | ||
229 | out: | |
230 | kfree(info); | |
231 | return err; | |
232 | } | |
233 | ||
c3c65160 AD |
234 | /** |
235 | * radeon_atif_get_notification_params - determine notify configuration | |
236 | * | |
237 | * @handle: acpi handle | |
238 | * @n: atif notification configuration struct | |
239 | * | |
240 | * Execute the ATIF_FUNCTION_GET_SYSTEM_PARAMETERS ATIF function | |
241 | * to determine if a notifier is used and if so which one | |
242 | * (all asics). This is either Notify(VGA, 0x81) or Notify(VGA, n) | |
243 | * where n is specified in the result if a notifier is used. | |
244 | * Returns 0 on success, error on failure. | |
245 | */ | |
ce3cf821 LT |
246 | static int radeon_atif_get_notification_params(acpi_handle handle, |
247 | struct radeon_atif_notification_cfg *n) | |
248 | { | |
249 | union acpi_object *info; | |
250 | struct atif_system_params params; | |
251 | size_t size; | |
252 | int err = 0; | |
253 | ||
254 | info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_PARAMETERS, NULL); | |
255 | if (!info) { | |
256 | err = -EIO; | |
257 | goto out; | |
258 | } | |
259 | ||
260 | size = *(u16 *) info->buffer.pointer; | |
261 | if (size < 10) { | |
262 | err = -EINVAL; | |
263 | goto out; | |
264 | } | |
265 | ||
266 | memset(¶ms, 0, sizeof(params)); | |
267 | size = min(sizeof(params), size); | |
268 | memcpy(¶ms, info->buffer.pointer, size); | |
269 | ||
fda4b25c LT |
270 | DRM_DEBUG_DRIVER("SYSTEM_PARAMS: mask = %#x, flags = %#x\n", |
271 | params.flags, params.valid_mask); | |
ce3cf821 LT |
272 | params.flags = params.flags & params.valid_mask; |
273 | ||
274 | if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_NONE) { | |
275 | n->enabled = false; | |
276 | n->command_code = 0; | |
277 | } else if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_81) { | |
278 | n->enabled = true; | |
279 | n->command_code = 0x81; | |
280 | } else { | |
281 | if (size < 11) { | |
282 | err = -EINVAL; | |
283 | goto out; | |
284 | } | |
285 | n->enabled = true; | |
286 | n->command_code = params.command_code; | |
287 | } | |
288 | ||
289 | out: | |
fda4b25c LT |
290 | DRM_DEBUG_DRIVER("Notification %s, command code = %#x\n", |
291 | (n->enabled ? "enabled" : "disabled"), | |
292 | n->command_code); | |
ce3cf821 LT |
293 | kfree(info); |
294 | return err; | |
295 | } | |
296 | ||
c3c65160 AD |
297 | /** |
298 | * radeon_atif_get_sbios_requests - get requested sbios event | |
299 | * | |
300 | * @handle: acpi handle | |
301 | * @req: atif sbios request struct | |
302 | * | |
303 | * Execute the ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS ATIF function | |
304 | * to determine what requests the sbios is making to the driver | |
305 | * (all asics). | |
306 | * Returns 0 on success, error on failure. | |
307 | */ | |
fda4b25c LT |
308 | static int radeon_atif_get_sbios_requests(acpi_handle handle, |
309 | struct atif_sbios_requests *req) | |
310 | { | |
311 | union acpi_object *info; | |
312 | size_t size; | |
313 | int count = 0; | |
314 | ||
315 | info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS, NULL); | |
316 | if (!info) | |
317 | return -EIO; | |
318 | ||
319 | size = *(u16 *)info->buffer.pointer; | |
320 | if (size < 0xd) { | |
321 | count = -EINVAL; | |
322 | goto out; | |
323 | } | |
324 | memset(req, 0, sizeof(*req)); | |
325 | ||
326 | size = min(sizeof(*req), size); | |
327 | memcpy(req, info->buffer.pointer, size); | |
328 | DRM_DEBUG_DRIVER("SBIOS pending requests: %#x\n", req->pending); | |
329 | ||
330 | count = hweight32(req->pending); | |
331 | ||
332 | out: | |
333 | kfree(info); | |
334 | return count; | |
335 | } | |
336 | ||
c3c65160 AD |
337 | /** |
338 | * radeon_atif_handler - handle ATIF notify requests | |
339 | * | |
340 | * @rdev: radeon_device pointer | |
341 | * @event: atif sbios request struct | |
342 | * | |
343 | * Checks the acpi event and if it matches an atif event, | |
344 | * handles it. | |
345 | * Returns NOTIFY code | |
346 | */ | |
fda4b25c LT |
347 | int radeon_atif_handler(struct radeon_device *rdev, |
348 | struct acpi_bus_event *event) | |
349 | { | |
350 | struct radeon_atif *atif = &rdev->atif; | |
351 | struct atif_sbios_requests req; | |
352 | acpi_handle handle; | |
353 | int count; | |
354 | ||
355 | DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n", | |
356 | event->device_class, event->type); | |
357 | ||
358 | if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) | |
359 | return NOTIFY_DONE; | |
360 | ||
361 | if (!atif->notification_cfg.enabled || | |
362 | event->type != atif->notification_cfg.command_code) | |
363 | /* Not our event */ | |
364 | return NOTIFY_DONE; | |
365 | ||
366 | /* Check pending SBIOS requests */ | |
3a83f992 | 367 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
fda4b25c LT |
368 | count = radeon_atif_get_sbios_requests(handle, &req); |
369 | ||
370 | if (count <= 0) | |
371 | return NOTIFY_DONE; | |
372 | ||
373 | DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count); | |
374 | ||
375 | if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) { | |
37e9b6a6 | 376 | struct radeon_encoder *enc = atif->encoder_for_bl; |
fda4b25c LT |
377 | |
378 | if (enc) { | |
fda4b25c LT |
379 | DRM_DEBUG_DRIVER("Changing brightness to %d\n", |
380 | req.backlight_level); | |
381 | ||
37e9b6a6 | 382 | radeon_set_backlight_level(rdev, enc, req.backlight_level); |
fda4b25c | 383 | |
cd23492a | 384 | #if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) |
37e9b6a6 AD |
385 | if (rdev->is_atom_bios) { |
386 | struct radeon_encoder_atom_dig *dig = enc->enc_priv; | |
387 | backlight_force_update(dig->bl_dev, | |
388 | BACKLIGHT_UPDATE_HOTKEY); | |
389 | } else { | |
390 | struct radeon_encoder_lvds *dig = enc->enc_priv; | |
391 | backlight_force_update(dig->bl_dev, | |
392 | BACKLIGHT_UPDATE_HOTKEY); | |
393 | } | |
cd23492a | 394 | #endif |
fda4b25c LT |
395 | } |
396 | } | |
397 | /* TODO: check other events */ | |
398 | ||
92fdf89a LT |
399 | /* We've handled the event, stop the notifier chain. The ACPI interface |
400 | * overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to | |
401 | * userspace if the event was generated only to signal a SBIOS | |
402 | * request. | |
403 | */ | |
404 | return NOTIFY_BAD; | |
fda4b25c LT |
405 | } |
406 | ||
e3a15920 AD |
407 | /* Call the ATCS method |
408 | */ | |
409 | /** | |
410 | * radeon_atcs_call - call an ATCS method | |
411 | * | |
412 | * @handle: acpi handle | |
413 | * @function: the ATCS function to execute | |
414 | * @params: ATCS function params | |
415 | * | |
416 | * Executes the requested ATCS function (all asics). | |
417 | * Returns a pointer to the acpi output buffer. | |
418 | */ | |
419 | static union acpi_object *radeon_atcs_call(acpi_handle handle, int function, | |
420 | struct acpi_buffer *params) | |
421 | { | |
422 | acpi_status status; | |
423 | union acpi_object atcs_arg_elements[2]; | |
424 | struct acpi_object_list atcs_arg; | |
425 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
426 | ||
427 | atcs_arg.count = 2; | |
428 | atcs_arg.pointer = &atcs_arg_elements[0]; | |
429 | ||
430 | atcs_arg_elements[0].type = ACPI_TYPE_INTEGER; | |
431 | atcs_arg_elements[0].integer.value = function; | |
432 | ||
433 | if (params) { | |
434 | atcs_arg_elements[1].type = ACPI_TYPE_BUFFER; | |
435 | atcs_arg_elements[1].buffer.length = params->length; | |
436 | atcs_arg_elements[1].buffer.pointer = params->pointer; | |
437 | } else { | |
438 | /* We need a second fake parameter */ | |
439 | atcs_arg_elements[1].type = ACPI_TYPE_INTEGER; | |
440 | atcs_arg_elements[1].integer.value = 0; | |
441 | } | |
442 | ||
443 | status = acpi_evaluate_object(handle, "ATCS", &atcs_arg, &buffer); | |
444 | ||
445 | /* Fail only if calling the method fails and ATIF is supported */ | |
446 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { | |
447 | DRM_DEBUG_DRIVER("failed to evaluate ATCS got %s\n", | |
448 | acpi_format_exception(status)); | |
449 | kfree(buffer.pointer); | |
450 | return NULL; | |
451 | } | |
452 | ||
453 | return buffer.pointer; | |
454 | } | |
455 | ||
456 | /** | |
457 | * radeon_atcs_parse_functions - parse supported functions | |
458 | * | |
459 | * @f: supported functions struct | |
460 | * @mask: supported functions mask from ATCS | |
461 | * | |
462 | * Use the supported functions mask from ATCS function | |
463 | * ATCS_FUNCTION_VERIFY_INTERFACE to determine what functions | |
464 | * are supported (all asics). | |
465 | */ | |
466 | static void radeon_atcs_parse_functions(struct radeon_atcs_functions *f, u32 mask) | |
467 | { | |
468 | f->get_ext_state = mask & ATCS_GET_EXTERNAL_STATE_SUPPORTED; | |
469 | f->pcie_perf_req = mask & ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED; | |
470 | f->pcie_dev_rdy = mask & ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED; | |
471 | f->pcie_bus_width = mask & ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED; | |
472 | } | |
473 | ||
474 | /** | |
475 | * radeon_atcs_verify_interface - verify ATCS | |
476 | * | |
477 | * @handle: acpi handle | |
478 | * @atcs: radeon atcs struct | |
479 | * | |
480 | * Execute the ATCS_FUNCTION_VERIFY_INTERFACE ATCS function | |
481 | * to initialize ATCS and determine what features are supported | |
482 | * (all asics). | |
483 | * returns 0 on success, error on failure. | |
484 | */ | |
485 | static int radeon_atcs_verify_interface(acpi_handle handle, | |
486 | struct radeon_atcs *atcs) | |
487 | { | |
488 | union acpi_object *info; | |
489 | struct atcs_verify_interface output; | |
490 | size_t size; | |
491 | int err = 0; | |
492 | ||
493 | info = radeon_atcs_call(handle, ATCS_FUNCTION_VERIFY_INTERFACE, NULL); | |
494 | if (!info) | |
495 | return -EIO; | |
496 | ||
497 | memset(&output, 0, sizeof(output)); | |
498 | ||
499 | size = *(u16 *) info->buffer.pointer; | |
500 | if (size < 8) { | |
a1871936 | 501 | DRM_INFO("ATCS buffer is too small: %zu\n", size); |
e3a15920 AD |
502 | err = -EINVAL; |
503 | goto out; | |
504 | } | |
505 | size = min(sizeof(output), size); | |
506 | ||
507 | memcpy(&output, info->buffer.pointer, size); | |
508 | ||
509 | /* TODO: check version? */ | |
510 | DRM_DEBUG_DRIVER("ATCS version %u\n", output.version); | |
511 | ||
512 | radeon_atcs_parse_functions(&atcs->functions, output.function_bits); | |
513 | ||
514 | out: | |
515 | kfree(info); | |
516 | return err; | |
517 | } | |
518 | ||
e37e6a0e AD |
519 | /** |
520 | * radeon_acpi_is_pcie_performance_request_supported | |
521 | * | |
522 | * @rdev: radeon_device pointer | |
523 | * | |
524 | * Check if the ATCS pcie_perf_req and pcie_dev_rdy methods | |
525 | * are supported (all asics). | |
526 | * returns true if supported, false if not. | |
527 | */ | |
528 | bool radeon_acpi_is_pcie_performance_request_supported(struct radeon_device *rdev) | |
529 | { | |
530 | struct radeon_atcs *atcs = &rdev->atcs; | |
531 | ||
532 | if (atcs->functions.pcie_perf_req && atcs->functions.pcie_dev_rdy) | |
533 | return true; | |
534 | ||
535 | return false; | |
536 | } | |
537 | ||
538 | /** | |
539 | * radeon_acpi_pcie_notify_device_ready | |
540 | * | |
541 | * @rdev: radeon_device pointer | |
542 | * | |
543 | * Executes the PCIE_DEVICE_READY_NOTIFICATION method | |
544 | * (all asics). | |
545 | * returns 0 on success, error on failure. | |
546 | */ | |
547 | int radeon_acpi_pcie_notify_device_ready(struct radeon_device *rdev) | |
548 | { | |
549 | acpi_handle handle; | |
550 | union acpi_object *info; | |
551 | struct radeon_atcs *atcs = &rdev->atcs; | |
552 | ||
553 | /* Get the device handle */ | |
3a83f992 | 554 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
e37e6a0e AD |
555 | if (!handle) |
556 | return -EINVAL; | |
557 | ||
558 | if (!atcs->functions.pcie_dev_rdy) | |
559 | return -EINVAL; | |
560 | ||
561 | info = radeon_atcs_call(handle, ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION, NULL); | |
562 | if (!info) | |
563 | return -EIO; | |
564 | ||
565 | kfree(info); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
570 | /** | |
571 | * radeon_acpi_pcie_performance_request | |
572 | * | |
573 | * @rdev: radeon_device pointer | |
574 | * @perf_req: requested perf level (pcie gen speed) | |
575 | * @advertise: set advertise caps flag if set | |
576 | * | |
577 | * Executes the PCIE_PERFORMANCE_REQUEST method to | |
578 | * change the pcie gen speed (all asics). | |
579 | * returns 0 on success, error on failure. | |
580 | */ | |
581 | int radeon_acpi_pcie_performance_request(struct radeon_device *rdev, | |
582 | u8 perf_req, bool advertise) | |
583 | { | |
584 | acpi_handle handle; | |
585 | union acpi_object *info; | |
586 | struct radeon_atcs *atcs = &rdev->atcs; | |
587 | struct atcs_pref_req_input atcs_input; | |
588 | struct atcs_pref_req_output atcs_output; | |
589 | struct acpi_buffer params; | |
590 | size_t size; | |
591 | u32 retry = 3; | |
592 | ||
593 | /* Get the device handle */ | |
3a83f992 | 594 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
e37e6a0e AD |
595 | if (!handle) |
596 | return -EINVAL; | |
597 | ||
598 | if (!atcs->functions.pcie_perf_req) | |
599 | return -EINVAL; | |
600 | ||
601 | atcs_input.size = sizeof(struct atcs_pref_req_input); | |
602 | /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ | |
603 | atcs_input.client_id = rdev->pdev->devfn | (rdev->pdev->bus->number << 8); | |
604 | atcs_input.valid_flags_mask = ATCS_VALID_FLAGS_MASK; | |
605 | atcs_input.flags = ATCS_WAIT_FOR_COMPLETION; | |
606 | if (advertise) | |
607 | atcs_input.flags |= ATCS_ADVERTISE_CAPS; | |
608 | atcs_input.req_type = ATCS_PCIE_LINK_SPEED; | |
609 | atcs_input.perf_req = perf_req; | |
610 | ||
611 | params.length = sizeof(struct atcs_pref_req_input); | |
612 | params.pointer = &atcs_input; | |
613 | ||
614 | while (retry--) { | |
615 | info = radeon_atcs_call(handle, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST, ¶ms); | |
616 | if (!info) | |
617 | return -EIO; | |
618 | ||
619 | memset(&atcs_output, 0, sizeof(atcs_output)); | |
620 | ||
621 | size = *(u16 *) info->buffer.pointer; | |
622 | if (size < 3) { | |
623 | DRM_INFO("ATCS buffer is too small: %zu\n", size); | |
624 | kfree(info); | |
625 | return -EINVAL; | |
626 | } | |
627 | size = min(sizeof(atcs_output), size); | |
628 | ||
629 | memcpy(&atcs_output, info->buffer.pointer, size); | |
630 | ||
631 | kfree(info); | |
632 | ||
633 | switch (atcs_output.ret_val) { | |
634 | case ATCS_REQUEST_REFUSED: | |
635 | default: | |
636 | return -EINVAL; | |
637 | case ATCS_REQUEST_COMPLETE: | |
638 | return 0; | |
639 | case ATCS_REQUEST_IN_PROGRESS: | |
640 | udelay(10); | |
641 | break; | |
642 | } | |
643 | } | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
c3c65160 AD |
648 | /** |
649 | * radeon_acpi_event - handle notify events | |
650 | * | |
651 | * @nb: notifier block | |
652 | * @val: val | |
653 | * @data: acpi event | |
654 | * | |
655 | * Calls relevant radeon functions in response to various | |
656 | * acpi events. | |
657 | * Returns NOTIFY code | |
658 | */ | |
c4917074 AD |
659 | static int radeon_acpi_event(struct notifier_block *nb, |
660 | unsigned long val, | |
661 | void *data) | |
662 | { | |
663 | struct radeon_device *rdev = container_of(nb, struct radeon_device, acpi_nb); | |
664 | struct acpi_bus_event *entry = (struct acpi_bus_event *)data; | |
665 | ||
666 | if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) { | |
667 | if (power_supply_is_system_supplied() > 0) | |
668 | DRM_DEBUG_DRIVER("pm: AC\n"); | |
669 | else | |
670 | DRM_DEBUG_DRIVER("pm: DC\n"); | |
671 | ||
672 | radeon_pm_acpi_event_handler(rdev); | |
673 | } | |
674 | ||
675 | /* Check for pending SBIOS requests */ | |
676 | return radeon_atif_handler(rdev, entry); | |
d7a2952f AM |
677 | } |
678 | ||
679 | /* Call all ACPI methods here */ | |
c3c65160 AD |
680 | /** |
681 | * radeon_acpi_init - init driver acpi support | |
682 | * | |
683 | * @rdev: radeon_device pointer | |
684 | * | |
685 | * Verifies the AMD ACPI interfaces and registers with the acpi | |
686 | * notifier chain (all asics). | |
687 | * Returns 0 on success, error on failure. | |
688 | */ | |
d7a2952f AM |
689 | int radeon_acpi_init(struct radeon_device *rdev) |
690 | { | |
691 | acpi_handle handle; | |
ce3cf821 | 692 | struct radeon_atif *atif = &rdev->atif; |
e3a15920 | 693 | struct radeon_atcs *atcs = &rdev->atcs; |
d7a2952f AM |
694 | int ret; |
695 | ||
d7a2952f | 696 | /* Get the device handle */ |
3a83f992 | 697 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
d7a2952f | 698 | |
48cc9b2c JD |
699 | /* No need to proceed if we're sure that ATIF is not supported */ |
700 | if (!ASIC_IS_AVIVO(rdev) || !rdev->bios || !handle) | |
701 | return 0; | |
702 | ||
e3a15920 AD |
703 | /* Call the ATCS method */ |
704 | ret = radeon_atcs_verify_interface(handle, atcs); | |
705 | if (ret) { | |
706 | DRM_DEBUG_DRIVER("Call to ATCS verify_interface failed: %d\n", ret); | |
707 | } | |
708 | ||
d7a2952f | 709 | /* Call the ATIF method */ |
ce3cf821 LT |
710 | ret = radeon_atif_verify_interface(handle, atif); |
711 | if (ret) { | |
e3a15920 | 712 | DRM_DEBUG_DRIVER("Call to ATIF verify_interface failed: %d\n", ret); |
ce3cf821 LT |
713 | goto out; |
714 | } | |
715 | ||
fda4b25c LT |
716 | if (atif->notifications.brightness_change) { |
717 | struct drm_encoder *tmp; | |
718 | struct radeon_encoder *target = NULL; | |
719 | ||
720 | /* Find the encoder controlling the brightness */ | |
721 | list_for_each_entry(tmp, &rdev->ddev->mode_config.encoder_list, | |
722 | head) { | |
723 | struct radeon_encoder *enc = to_radeon_encoder(tmp); | |
fda4b25c LT |
724 | |
725 | if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) && | |
37e9b6a6 AD |
726 | enc->enc_priv) { |
727 | if (rdev->is_atom_bios) { | |
728 | struct radeon_encoder_atom_dig *dig = enc->enc_priv; | |
729 | if (dig->bl_dev) { | |
730 | target = enc; | |
731 | break; | |
732 | } | |
733 | } else { | |
734 | struct radeon_encoder_lvds *dig = enc->enc_priv; | |
735 | if (dig->bl_dev) { | |
736 | target = enc; | |
737 | break; | |
738 | } | |
739 | } | |
fda4b25c LT |
740 | } |
741 | } | |
742 | ||
37e9b6a6 | 743 | atif->encoder_for_bl = target; |
fda4b25c LT |
744 | if (!target) { |
745 | /* Brightness change notification is enabled, but we | |
746 | * didn't find a backlight controller, this should | |
747 | * never happen. | |
748 | */ | |
749 | DRM_ERROR("Cannot find a backlight controller\n"); | |
750 | } | |
751 | } | |
d7a2952f | 752 | |
ce3cf821 LT |
753 | if (atif->functions.sbios_requests && !atif->functions.system_params) { |
754 | /* XXX check this workraround, if sbios request function is | |
755 | * present we have to see how it's configured in the system | |
756 | * params | |
757 | */ | |
758 | atif->functions.system_params = true; | |
759 | } | |
760 | ||
761 | if (atif->functions.system_params) { | |
762 | ret = radeon_atif_get_notification_params(handle, | |
763 | &atif->notification_cfg); | |
764 | if (ret) { | |
765 | DRM_DEBUG_DRIVER("Call to GET_SYSTEM_PARAMS failed: %d\n", | |
766 | ret); | |
767 | /* Disable notification */ | |
768 | atif->notification_cfg.enabled = false; | |
769 | } | |
770 | } | |
d7a2952f | 771 | |
ce3cf821 | 772 | out: |
c4917074 AD |
773 | rdev->acpi_nb.notifier_call = radeon_acpi_event; |
774 | register_acpi_notifier(&rdev->acpi_nb); | |
775 | ||
86504672 | 776 | return ret; |
d7a2952f AM |
777 | } |
778 | ||
c3c65160 AD |
779 | /** |
780 | * radeon_acpi_fini - tear down driver acpi support | |
781 | * | |
782 | * @rdev: radeon_device pointer | |
783 | * | |
784 | * Unregisters with the acpi notifier chain (all asics). | |
785 | */ | |
c4917074 AD |
786 | void radeon_acpi_fini(struct radeon_device *rdev) |
787 | { | |
788 | unregister_acpi_notifier(&rdev->acpi_nb); | |
789 | } |