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> |
8b48463f | 28 | #include <linux/vga_switcheroo.h> |
fda4b25c | 29 | #include <acpi/video.h> |
760285e7 DH |
30 | #include <drm/drmP.h> |
31 | #include <drm/drm_crtc_helper.h> | |
d7a2952f | 32 | #include "radeon.h" |
9e05b2f4 | 33 | #include "radeon_acpi.h" |
fda4b25c | 34 | #include "atom.h" |
d7a2952f | 35 | |
c4917074 AD |
36 | #define ACPI_AC_CLASS "ac_adapter" |
37 | ||
38 | extern void radeon_pm_acpi_event_handler(struct radeon_device *rdev); | |
39 | ||
fd64ca8a LT |
40 | struct atif_verify_interface { |
41 | u16 size; /* structure size in bytes (includes size field) */ | |
42 | u16 version; /* version */ | |
43 | u32 notification_mask; /* supported notifications mask */ | |
44 | u32 function_bits; /* supported functions bit vector */ | |
45 | } __packed; | |
46 | ||
ce3cf821 | 47 | struct atif_system_params { |
fda4b25c LT |
48 | u16 size; /* structure size in bytes (includes size field) */ |
49 | u32 valid_mask; /* valid flags mask */ | |
50 | u32 flags; /* flags */ | |
51 | u8 command_code; /* notify command code */ | |
52 | } __packed; | |
53 | ||
54 | struct atif_sbios_requests { | |
55 | u16 size; /* structure size in bytes (includes size field) */ | |
56 | u32 pending; /* pending sbios requests */ | |
57 | u8 panel_exp_mode; /* panel expansion mode */ | |
58 | u8 thermal_gfx; /* thermal state: target gfx controller */ | |
59 | u8 thermal_state; /* thermal state: state id (0: exit state, non-0: state) */ | |
60 | u8 forced_power_gfx; /* forced power state: target gfx controller */ | |
61 | u8 forced_power_state; /* forced power state: state id */ | |
62 | u8 system_power_src; /* system power source */ | |
63 | u8 backlight_level; /* panel backlight level (0-255) */ | |
ce3cf821 LT |
64 | } __packed; |
65 | ||
66 | #define ATIF_NOTIFY_MASK 0x3 | |
67 | #define ATIF_NOTIFY_NONE 0 | |
68 | #define ATIF_NOTIFY_81 1 | |
69 | #define ATIF_NOTIFY_N 2 | |
70 | ||
e3a15920 AD |
71 | struct atcs_verify_interface { |
72 | u16 size; /* structure size in bytes (includes size field) */ | |
73 | u16 version; /* version */ | |
74 | u32 function_bits; /* supported functions bit vector */ | |
75 | } __packed; | |
76 | ||
e37e6a0e | 77 | #define ATCS_VALID_FLAGS_MASK 0x3 |
dc50ba7f | 78 | |
e37e6a0e AD |
79 | struct atcs_pref_req_input { |
80 | u16 size; /* structure size in bytes (includes size field) */ | |
81 | u16 client_id; /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ | |
82 | u16 valid_flags_mask; /* valid flags mask */ | |
83 | u16 flags; /* flags */ | |
84 | u8 req_type; /* request type */ | |
85 | u8 perf_req; /* performance request */ | |
86 | } __packed; | |
dc50ba7f | 87 | |
e37e6a0e AD |
88 | struct atcs_pref_req_output { |
89 | u16 size; /* structure size in bytes (includes size field) */ | |
90 | u8 ret_val; /* return value */ | |
91 | } __packed; | |
dc50ba7f | 92 | |
d7a2952f | 93 | /* Call the ATIF method |
d7a2952f | 94 | */ |
c3c65160 AD |
95 | /** |
96 | * radeon_atif_call - call an ATIF method | |
d7a2952f | 97 | * |
c3c65160 AD |
98 | * @handle: acpi handle |
99 | * @function: the ATIF function to execute | |
100 | * @params: ATIF function params | |
101 | * | |
102 | * Executes the requested ATIF function (all asics). | |
103 | * Returns a pointer to the acpi output buffer. | |
d7a2952f | 104 | */ |
86504672 LT |
105 | static union acpi_object *radeon_atif_call(acpi_handle handle, int function, |
106 | struct acpi_buffer *params) | |
d7a2952f AM |
107 | { |
108 | acpi_status status; | |
109 | union acpi_object atif_arg_elements[2]; | |
110 | struct acpi_object_list atif_arg; | |
86504672 | 111 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
d7a2952f AM |
112 | |
113 | atif_arg.count = 2; | |
114 | atif_arg.pointer = &atif_arg_elements[0]; | |
115 | ||
116 | atif_arg_elements[0].type = ACPI_TYPE_INTEGER; | |
86504672 LT |
117 | atif_arg_elements[0].integer.value = function; |
118 | ||
119 | if (params) { | |
120 | atif_arg_elements[1].type = ACPI_TYPE_BUFFER; | |
121 | atif_arg_elements[1].buffer.length = params->length; | |
122 | atif_arg_elements[1].buffer.pointer = params->pointer; | |
123 | } else { | |
124 | /* We need a second fake parameter */ | |
125 | atif_arg_elements[1].type = ACPI_TYPE_INTEGER; | |
126 | atif_arg_elements[1].integer.value = 0; | |
127 | } | |
d7a2952f AM |
128 | |
129 | status = acpi_evaluate_object(handle, "ATIF", &atif_arg, &buffer); | |
130 | ||
131 | /* Fail only if calling the method fails and ATIF is supported */ | |
132 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { | |
bc96f942 JD |
133 | DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n", |
134 | acpi_format_exception(status)); | |
d7a2952f | 135 | kfree(buffer.pointer); |
86504672 | 136 | return NULL; |
d7a2952f AM |
137 | } |
138 | ||
86504672 | 139 | return buffer.pointer; |
d7a2952f AM |
140 | } |
141 | ||
c3c65160 AD |
142 | /** |
143 | * radeon_atif_parse_notification - parse supported notifications | |
144 | * | |
145 | * @n: supported notifications struct | |
146 | * @mask: supported notifications mask from ATIF | |
147 | * | |
148 | * Use the supported notifications mask from ATIF function | |
149 | * ATIF_FUNCTION_VERIFY_INTERFACE to determine what notifications | |
150 | * are supported (all asics). | |
151 | */ | |
fd64ca8a LT |
152 | static void radeon_atif_parse_notification(struct radeon_atif_notifications *n, u32 mask) |
153 | { | |
154 | n->display_switch = mask & ATIF_DISPLAY_SWITCH_REQUEST_SUPPORTED; | |
155 | n->expansion_mode_change = mask & ATIF_EXPANSION_MODE_CHANGE_REQUEST_SUPPORTED; | |
156 | n->thermal_state = mask & ATIF_THERMAL_STATE_CHANGE_REQUEST_SUPPORTED; | |
157 | n->forced_power_state = mask & ATIF_FORCED_POWER_STATE_CHANGE_REQUEST_SUPPORTED; | |
158 | n->system_power_state = mask & ATIF_SYSTEM_POWER_SOURCE_CHANGE_REQUEST_SUPPORTED; | |
159 | n->display_conf_change = mask & ATIF_DISPLAY_CONF_CHANGE_REQUEST_SUPPORTED; | |
160 | n->px_gfx_switch = mask & ATIF_PX_GFX_SWITCH_REQUEST_SUPPORTED; | |
161 | n->brightness_change = mask & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST_SUPPORTED; | |
162 | n->dgpu_display_event = mask & ATIF_DGPU_DISPLAY_EVENT_SUPPORTED; | |
163 | } | |
164 | ||
c3c65160 AD |
165 | /** |
166 | * radeon_atif_parse_functions - parse supported functions | |
167 | * | |
168 | * @f: supported functions struct | |
169 | * @mask: supported functions mask from ATIF | |
170 | * | |
171 | * Use the supported functions mask from ATIF function | |
172 | * ATIF_FUNCTION_VERIFY_INTERFACE to determine what functions | |
173 | * are supported (all asics). | |
174 | */ | |
fd64ca8a LT |
175 | static void radeon_atif_parse_functions(struct radeon_atif_functions *f, u32 mask) |
176 | { | |
177 | f->system_params = mask & ATIF_GET_SYSTEM_PARAMETERS_SUPPORTED; | |
178 | f->sbios_requests = mask & ATIF_GET_SYSTEM_BIOS_REQUESTS_SUPPORTED; | |
179 | f->select_active_disp = mask & ATIF_SELECT_ACTIVE_DISPLAYS_SUPPORTED; | |
180 | f->lid_state = mask & ATIF_GET_LID_STATE_SUPPORTED; | |
181 | f->get_tv_standard = mask & ATIF_GET_TV_STANDARD_FROM_CMOS_SUPPORTED; | |
182 | f->set_tv_standard = mask & ATIF_SET_TV_STANDARD_IN_CMOS_SUPPORTED; | |
183 | f->get_panel_expansion_mode = mask & ATIF_GET_PANEL_EXPANSION_MODE_FROM_CMOS_SUPPORTED; | |
184 | f->set_panel_expansion_mode = mask & ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED; | |
185 | f->temperature_change = mask & ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED; | |
186 | f->graphics_device_types = mask & ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED; | |
187 | } | |
188 | ||
c3c65160 AD |
189 | /** |
190 | * radeon_atif_verify_interface - verify ATIF | |
191 | * | |
192 | * @handle: acpi handle | |
193 | * @atif: radeon atif struct | |
194 | * | |
195 | * Execute the ATIF_FUNCTION_VERIFY_INTERFACE ATIF function | |
196 | * to initialize ATIF and determine what features are supported | |
197 | * (all asics). | |
198 | * returns 0 on success, error on failure. | |
199 | */ | |
fd64ca8a LT |
200 | static int radeon_atif_verify_interface(acpi_handle handle, |
201 | struct radeon_atif *atif) | |
202 | { | |
203 | union acpi_object *info; | |
204 | struct atif_verify_interface output; | |
205 | size_t size; | |
206 | int err = 0; | |
207 | ||
208 | info = radeon_atif_call(handle, ATIF_FUNCTION_VERIFY_INTERFACE, NULL); | |
209 | if (!info) | |
210 | return -EIO; | |
211 | ||
212 | memset(&output, 0, sizeof(output)); | |
213 | ||
214 | size = *(u16 *) info->buffer.pointer; | |
215 | if (size < 12) { | |
a1871936 | 216 | DRM_INFO("ATIF buffer is too small: %zu\n", size); |
fd64ca8a LT |
217 | err = -EINVAL; |
218 | goto out; | |
219 | } | |
220 | size = min(sizeof(output), size); | |
221 | ||
222 | memcpy(&output, info->buffer.pointer, size); | |
223 | ||
224 | /* TODO: check version? */ | |
225 | DRM_DEBUG_DRIVER("ATIF version %u\n", output.version); | |
226 | ||
227 | radeon_atif_parse_notification(&atif->notifications, output.notification_mask); | |
228 | radeon_atif_parse_functions(&atif->functions, output.function_bits); | |
229 | ||
230 | out: | |
231 | kfree(info); | |
232 | return err; | |
233 | } | |
234 | ||
c3c65160 AD |
235 | /** |
236 | * radeon_atif_get_notification_params - determine notify configuration | |
237 | * | |
238 | * @handle: acpi handle | |
239 | * @n: atif notification configuration struct | |
240 | * | |
241 | * Execute the ATIF_FUNCTION_GET_SYSTEM_PARAMETERS ATIF function | |
242 | * to determine if a notifier is used and if so which one | |
243 | * (all asics). This is either Notify(VGA, 0x81) or Notify(VGA, n) | |
244 | * where n is specified in the result if a notifier is used. | |
245 | * Returns 0 on success, error on failure. | |
246 | */ | |
ce3cf821 LT |
247 | static int radeon_atif_get_notification_params(acpi_handle handle, |
248 | struct radeon_atif_notification_cfg *n) | |
249 | { | |
250 | union acpi_object *info; | |
251 | struct atif_system_params params; | |
252 | size_t size; | |
253 | int err = 0; | |
254 | ||
255 | info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_PARAMETERS, NULL); | |
256 | if (!info) { | |
257 | err = -EIO; | |
258 | goto out; | |
259 | } | |
260 | ||
261 | size = *(u16 *) info->buffer.pointer; | |
262 | if (size < 10) { | |
263 | err = -EINVAL; | |
264 | goto out; | |
265 | } | |
266 | ||
267 | memset(¶ms, 0, sizeof(params)); | |
268 | size = min(sizeof(params), size); | |
269 | memcpy(¶ms, info->buffer.pointer, size); | |
270 | ||
fda4b25c LT |
271 | DRM_DEBUG_DRIVER("SYSTEM_PARAMS: mask = %#x, flags = %#x\n", |
272 | params.flags, params.valid_mask); | |
ce3cf821 LT |
273 | params.flags = params.flags & params.valid_mask; |
274 | ||
275 | if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_NONE) { | |
276 | n->enabled = false; | |
277 | n->command_code = 0; | |
278 | } else if ((params.flags & ATIF_NOTIFY_MASK) == ATIF_NOTIFY_81) { | |
279 | n->enabled = true; | |
280 | n->command_code = 0x81; | |
281 | } else { | |
282 | if (size < 11) { | |
283 | err = -EINVAL; | |
284 | goto out; | |
285 | } | |
286 | n->enabled = true; | |
287 | n->command_code = params.command_code; | |
288 | } | |
289 | ||
290 | out: | |
fda4b25c LT |
291 | DRM_DEBUG_DRIVER("Notification %s, command code = %#x\n", |
292 | (n->enabled ? "enabled" : "disabled"), | |
293 | n->command_code); | |
ce3cf821 LT |
294 | kfree(info); |
295 | return err; | |
296 | } | |
297 | ||
c3c65160 AD |
298 | /** |
299 | * radeon_atif_get_sbios_requests - get requested sbios event | |
300 | * | |
301 | * @handle: acpi handle | |
302 | * @req: atif sbios request struct | |
303 | * | |
304 | * Execute the ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS ATIF function | |
305 | * to determine what requests the sbios is making to the driver | |
306 | * (all asics). | |
307 | * Returns 0 on success, error on failure. | |
308 | */ | |
fda4b25c LT |
309 | static int radeon_atif_get_sbios_requests(acpi_handle handle, |
310 | struct atif_sbios_requests *req) | |
311 | { | |
312 | union acpi_object *info; | |
313 | size_t size; | |
314 | int count = 0; | |
315 | ||
316 | info = radeon_atif_call(handle, ATIF_FUNCTION_GET_SYSTEM_BIOS_REQUESTS, NULL); | |
317 | if (!info) | |
318 | return -EIO; | |
319 | ||
320 | size = *(u16 *)info->buffer.pointer; | |
321 | if (size < 0xd) { | |
322 | count = -EINVAL; | |
323 | goto out; | |
324 | } | |
325 | memset(req, 0, sizeof(*req)); | |
326 | ||
327 | size = min(sizeof(*req), size); | |
328 | memcpy(req, info->buffer.pointer, size); | |
329 | DRM_DEBUG_DRIVER("SBIOS pending requests: %#x\n", req->pending); | |
330 | ||
331 | count = hweight32(req->pending); | |
332 | ||
333 | out: | |
334 | kfree(info); | |
335 | return count; | |
336 | } | |
337 | ||
c3c65160 AD |
338 | /** |
339 | * radeon_atif_handler - handle ATIF notify requests | |
340 | * | |
341 | * @rdev: radeon_device pointer | |
342 | * @event: atif sbios request struct | |
343 | * | |
344 | * Checks the acpi event and if it matches an atif event, | |
345 | * handles it. | |
346 | * Returns NOTIFY code | |
347 | */ | |
fda4b25c LT |
348 | int radeon_atif_handler(struct radeon_device *rdev, |
349 | struct acpi_bus_event *event) | |
350 | { | |
351 | struct radeon_atif *atif = &rdev->atif; | |
352 | struct atif_sbios_requests req; | |
353 | acpi_handle handle; | |
354 | int count; | |
355 | ||
356 | DRM_DEBUG_DRIVER("event, device_class = %s, type = %#x\n", | |
357 | event->device_class, event->type); | |
358 | ||
359 | if (strcmp(event->device_class, ACPI_VIDEO_CLASS) != 0) | |
360 | return NOTIFY_DONE; | |
361 | ||
362 | if (!atif->notification_cfg.enabled || | |
363 | event->type != atif->notification_cfg.command_code) | |
364 | /* Not our event */ | |
365 | return NOTIFY_DONE; | |
366 | ||
367 | /* Check pending SBIOS requests */ | |
3a83f992 | 368 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
fda4b25c LT |
369 | count = radeon_atif_get_sbios_requests(handle, &req); |
370 | ||
371 | if (count <= 0) | |
372 | return NOTIFY_DONE; | |
373 | ||
374 | DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count); | |
375 | ||
376 | if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) { | |
37e9b6a6 | 377 | struct radeon_encoder *enc = atif->encoder_for_bl; |
fda4b25c LT |
378 | |
379 | if (enc) { | |
fda4b25c LT |
380 | DRM_DEBUG_DRIVER("Changing brightness to %d\n", |
381 | req.backlight_level); | |
382 | ||
37e9b6a6 | 383 | radeon_set_backlight_level(rdev, enc, req.backlight_level); |
fda4b25c | 384 | |
cd23492a | 385 | #if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) || defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) |
37e9b6a6 AD |
386 | if (rdev->is_atom_bios) { |
387 | struct radeon_encoder_atom_dig *dig = enc->enc_priv; | |
388 | backlight_force_update(dig->bl_dev, | |
389 | BACKLIGHT_UPDATE_HOTKEY); | |
390 | } else { | |
391 | struct radeon_encoder_lvds *dig = enc->enc_priv; | |
392 | backlight_force_update(dig->bl_dev, | |
393 | BACKLIGHT_UPDATE_HOTKEY); | |
394 | } | |
cd23492a | 395 | #endif |
fda4b25c LT |
396 | } |
397 | } | |
398 | /* TODO: check other events */ | |
399 | ||
92fdf89a LT |
400 | /* We've handled the event, stop the notifier chain. The ACPI interface |
401 | * overloads ACPI_VIDEO_NOTIFY_PROBE, we don't want to send that to | |
402 | * userspace if the event was generated only to signal a SBIOS | |
403 | * request. | |
404 | */ | |
405 | return NOTIFY_BAD; | |
fda4b25c LT |
406 | } |
407 | ||
e3a15920 AD |
408 | /* Call the ATCS method |
409 | */ | |
410 | /** | |
411 | * radeon_atcs_call - call an ATCS method | |
412 | * | |
413 | * @handle: acpi handle | |
414 | * @function: the ATCS function to execute | |
415 | * @params: ATCS function params | |
416 | * | |
417 | * Executes the requested ATCS function (all asics). | |
418 | * Returns a pointer to the acpi output buffer. | |
419 | */ | |
420 | static union acpi_object *radeon_atcs_call(acpi_handle handle, int function, | |
421 | struct acpi_buffer *params) | |
422 | { | |
423 | acpi_status status; | |
424 | union acpi_object atcs_arg_elements[2]; | |
425 | struct acpi_object_list atcs_arg; | |
426 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; | |
427 | ||
428 | atcs_arg.count = 2; | |
429 | atcs_arg.pointer = &atcs_arg_elements[0]; | |
430 | ||
431 | atcs_arg_elements[0].type = ACPI_TYPE_INTEGER; | |
432 | atcs_arg_elements[0].integer.value = function; | |
433 | ||
434 | if (params) { | |
435 | atcs_arg_elements[1].type = ACPI_TYPE_BUFFER; | |
436 | atcs_arg_elements[1].buffer.length = params->length; | |
437 | atcs_arg_elements[1].buffer.pointer = params->pointer; | |
438 | } else { | |
439 | /* We need a second fake parameter */ | |
440 | atcs_arg_elements[1].type = ACPI_TYPE_INTEGER; | |
441 | atcs_arg_elements[1].integer.value = 0; | |
442 | } | |
443 | ||
444 | status = acpi_evaluate_object(handle, "ATCS", &atcs_arg, &buffer); | |
445 | ||
446 | /* Fail only if calling the method fails and ATIF is supported */ | |
447 | if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { | |
448 | DRM_DEBUG_DRIVER("failed to evaluate ATCS got %s\n", | |
449 | acpi_format_exception(status)); | |
450 | kfree(buffer.pointer); | |
451 | return NULL; | |
452 | } | |
453 | ||
454 | return buffer.pointer; | |
455 | } | |
456 | ||
457 | /** | |
458 | * radeon_atcs_parse_functions - parse supported functions | |
459 | * | |
460 | * @f: supported functions struct | |
461 | * @mask: supported functions mask from ATCS | |
462 | * | |
463 | * Use the supported functions mask from ATCS function | |
464 | * ATCS_FUNCTION_VERIFY_INTERFACE to determine what functions | |
465 | * are supported (all asics). | |
466 | */ | |
467 | static void radeon_atcs_parse_functions(struct radeon_atcs_functions *f, u32 mask) | |
468 | { | |
469 | f->get_ext_state = mask & ATCS_GET_EXTERNAL_STATE_SUPPORTED; | |
470 | f->pcie_perf_req = mask & ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED; | |
471 | f->pcie_dev_rdy = mask & ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED; | |
472 | f->pcie_bus_width = mask & ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED; | |
473 | } | |
474 | ||
475 | /** | |
476 | * radeon_atcs_verify_interface - verify ATCS | |
477 | * | |
478 | * @handle: acpi handle | |
479 | * @atcs: radeon atcs struct | |
480 | * | |
481 | * Execute the ATCS_FUNCTION_VERIFY_INTERFACE ATCS function | |
482 | * to initialize ATCS and determine what features are supported | |
483 | * (all asics). | |
484 | * returns 0 on success, error on failure. | |
485 | */ | |
486 | static int radeon_atcs_verify_interface(acpi_handle handle, | |
487 | struct radeon_atcs *atcs) | |
488 | { | |
489 | union acpi_object *info; | |
490 | struct atcs_verify_interface output; | |
491 | size_t size; | |
492 | int err = 0; | |
493 | ||
494 | info = radeon_atcs_call(handle, ATCS_FUNCTION_VERIFY_INTERFACE, NULL); | |
495 | if (!info) | |
496 | return -EIO; | |
497 | ||
498 | memset(&output, 0, sizeof(output)); | |
499 | ||
500 | size = *(u16 *) info->buffer.pointer; | |
501 | if (size < 8) { | |
a1871936 | 502 | DRM_INFO("ATCS buffer is too small: %zu\n", size); |
e3a15920 AD |
503 | err = -EINVAL; |
504 | goto out; | |
505 | } | |
506 | size = min(sizeof(output), size); | |
507 | ||
508 | memcpy(&output, info->buffer.pointer, size); | |
509 | ||
510 | /* TODO: check version? */ | |
511 | DRM_DEBUG_DRIVER("ATCS version %u\n", output.version); | |
512 | ||
513 | radeon_atcs_parse_functions(&atcs->functions, output.function_bits); | |
514 | ||
515 | out: | |
516 | kfree(info); | |
517 | return err; | |
518 | } | |
519 | ||
e37e6a0e AD |
520 | /** |
521 | * radeon_acpi_is_pcie_performance_request_supported | |
522 | * | |
523 | * @rdev: radeon_device pointer | |
524 | * | |
525 | * Check if the ATCS pcie_perf_req and pcie_dev_rdy methods | |
526 | * are supported (all asics). | |
527 | * returns true if supported, false if not. | |
528 | */ | |
529 | bool radeon_acpi_is_pcie_performance_request_supported(struct radeon_device *rdev) | |
530 | { | |
531 | struct radeon_atcs *atcs = &rdev->atcs; | |
532 | ||
533 | if (atcs->functions.pcie_perf_req && atcs->functions.pcie_dev_rdy) | |
534 | return true; | |
535 | ||
536 | return false; | |
537 | } | |
538 | ||
539 | /** | |
540 | * radeon_acpi_pcie_notify_device_ready | |
541 | * | |
542 | * @rdev: radeon_device pointer | |
543 | * | |
544 | * Executes the PCIE_DEVICE_READY_NOTIFICATION method | |
545 | * (all asics). | |
546 | * returns 0 on success, error on failure. | |
547 | */ | |
548 | int radeon_acpi_pcie_notify_device_ready(struct radeon_device *rdev) | |
549 | { | |
550 | acpi_handle handle; | |
551 | union acpi_object *info; | |
552 | struct radeon_atcs *atcs = &rdev->atcs; | |
553 | ||
554 | /* Get the device handle */ | |
3a83f992 | 555 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
e37e6a0e AD |
556 | if (!handle) |
557 | return -EINVAL; | |
558 | ||
559 | if (!atcs->functions.pcie_dev_rdy) | |
560 | return -EINVAL; | |
561 | ||
562 | info = radeon_atcs_call(handle, ATCS_FUNCTION_PCIE_DEVICE_READY_NOTIFICATION, NULL); | |
563 | if (!info) | |
564 | return -EIO; | |
565 | ||
566 | kfree(info); | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
571 | /** | |
572 | * radeon_acpi_pcie_performance_request | |
573 | * | |
574 | * @rdev: radeon_device pointer | |
575 | * @perf_req: requested perf level (pcie gen speed) | |
576 | * @advertise: set advertise caps flag if set | |
577 | * | |
578 | * Executes the PCIE_PERFORMANCE_REQUEST method to | |
579 | * change the pcie gen speed (all asics). | |
580 | * returns 0 on success, error on failure. | |
581 | */ | |
582 | int radeon_acpi_pcie_performance_request(struct radeon_device *rdev, | |
583 | u8 perf_req, bool advertise) | |
584 | { | |
585 | acpi_handle handle; | |
586 | union acpi_object *info; | |
587 | struct radeon_atcs *atcs = &rdev->atcs; | |
588 | struct atcs_pref_req_input atcs_input; | |
589 | struct atcs_pref_req_output atcs_output; | |
590 | struct acpi_buffer params; | |
591 | size_t size; | |
592 | u32 retry = 3; | |
593 | ||
594 | /* Get the device handle */ | |
3a83f992 | 595 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
e37e6a0e AD |
596 | if (!handle) |
597 | return -EINVAL; | |
598 | ||
599 | if (!atcs->functions.pcie_perf_req) | |
600 | return -EINVAL; | |
601 | ||
602 | atcs_input.size = sizeof(struct atcs_pref_req_input); | |
603 | /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ | |
604 | atcs_input.client_id = rdev->pdev->devfn | (rdev->pdev->bus->number << 8); | |
605 | atcs_input.valid_flags_mask = ATCS_VALID_FLAGS_MASK; | |
606 | atcs_input.flags = ATCS_WAIT_FOR_COMPLETION; | |
607 | if (advertise) | |
608 | atcs_input.flags |= ATCS_ADVERTISE_CAPS; | |
609 | atcs_input.req_type = ATCS_PCIE_LINK_SPEED; | |
610 | atcs_input.perf_req = perf_req; | |
611 | ||
612 | params.length = sizeof(struct atcs_pref_req_input); | |
613 | params.pointer = &atcs_input; | |
614 | ||
615 | while (retry--) { | |
616 | info = radeon_atcs_call(handle, ATCS_FUNCTION_PCIE_PERFORMANCE_REQUEST, ¶ms); | |
617 | if (!info) | |
618 | return -EIO; | |
619 | ||
620 | memset(&atcs_output, 0, sizeof(atcs_output)); | |
621 | ||
622 | size = *(u16 *) info->buffer.pointer; | |
623 | if (size < 3) { | |
624 | DRM_INFO("ATCS buffer is too small: %zu\n", size); | |
625 | kfree(info); | |
626 | return -EINVAL; | |
627 | } | |
628 | size = min(sizeof(atcs_output), size); | |
629 | ||
630 | memcpy(&atcs_output, info->buffer.pointer, size); | |
631 | ||
632 | kfree(info); | |
633 | ||
634 | switch (atcs_output.ret_val) { | |
635 | case ATCS_REQUEST_REFUSED: | |
636 | default: | |
637 | return -EINVAL; | |
638 | case ATCS_REQUEST_COMPLETE: | |
639 | return 0; | |
640 | case ATCS_REQUEST_IN_PROGRESS: | |
641 | udelay(10); | |
642 | break; | |
643 | } | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
c3c65160 AD |
649 | /** |
650 | * radeon_acpi_event - handle notify events | |
651 | * | |
652 | * @nb: notifier block | |
653 | * @val: val | |
654 | * @data: acpi event | |
655 | * | |
656 | * Calls relevant radeon functions in response to various | |
657 | * acpi events. | |
658 | * Returns NOTIFY code | |
659 | */ | |
c4917074 AD |
660 | static int radeon_acpi_event(struct notifier_block *nb, |
661 | unsigned long val, | |
662 | void *data) | |
663 | { | |
664 | struct radeon_device *rdev = container_of(nb, struct radeon_device, acpi_nb); | |
665 | struct acpi_bus_event *entry = (struct acpi_bus_event *)data; | |
666 | ||
667 | if (strcmp(entry->device_class, ACPI_AC_CLASS) == 0) { | |
668 | if (power_supply_is_system_supplied() > 0) | |
669 | DRM_DEBUG_DRIVER("pm: AC\n"); | |
670 | else | |
671 | DRM_DEBUG_DRIVER("pm: DC\n"); | |
672 | ||
673 | radeon_pm_acpi_event_handler(rdev); | |
674 | } | |
675 | ||
676 | /* Check for pending SBIOS requests */ | |
677 | return radeon_atif_handler(rdev, entry); | |
d7a2952f AM |
678 | } |
679 | ||
680 | /* Call all ACPI methods here */ | |
c3c65160 AD |
681 | /** |
682 | * radeon_acpi_init - init driver acpi support | |
683 | * | |
684 | * @rdev: radeon_device pointer | |
685 | * | |
686 | * Verifies the AMD ACPI interfaces and registers with the acpi | |
687 | * notifier chain (all asics). | |
688 | * Returns 0 on success, error on failure. | |
689 | */ | |
d7a2952f AM |
690 | int radeon_acpi_init(struct radeon_device *rdev) |
691 | { | |
692 | acpi_handle handle; | |
ce3cf821 | 693 | struct radeon_atif *atif = &rdev->atif; |
e3a15920 | 694 | struct radeon_atcs *atcs = &rdev->atcs; |
d7a2952f AM |
695 | int ret; |
696 | ||
d7a2952f | 697 | /* Get the device handle */ |
3a83f992 | 698 | handle = ACPI_HANDLE(&rdev->pdev->dev); |
d7a2952f | 699 | |
48cc9b2c JD |
700 | /* No need to proceed if we're sure that ATIF is not supported */ |
701 | if (!ASIC_IS_AVIVO(rdev) || !rdev->bios || !handle) | |
702 | return 0; | |
703 | ||
e3a15920 AD |
704 | /* Call the ATCS method */ |
705 | ret = radeon_atcs_verify_interface(handle, atcs); | |
706 | if (ret) { | |
707 | DRM_DEBUG_DRIVER("Call to ATCS verify_interface failed: %d\n", ret); | |
708 | } | |
709 | ||
d7a2952f | 710 | /* Call the ATIF method */ |
ce3cf821 LT |
711 | ret = radeon_atif_verify_interface(handle, atif); |
712 | if (ret) { | |
e3a15920 | 713 | DRM_DEBUG_DRIVER("Call to ATIF verify_interface failed: %d\n", ret); |
ce3cf821 LT |
714 | goto out; |
715 | } | |
716 | ||
fda4b25c LT |
717 | if (atif->notifications.brightness_change) { |
718 | struct drm_encoder *tmp; | |
719 | struct radeon_encoder *target = NULL; | |
720 | ||
721 | /* Find the encoder controlling the brightness */ | |
722 | list_for_each_entry(tmp, &rdev->ddev->mode_config.encoder_list, | |
723 | head) { | |
724 | struct radeon_encoder *enc = to_radeon_encoder(tmp); | |
fda4b25c LT |
725 | |
726 | if ((enc->devices & (ATOM_DEVICE_LCD_SUPPORT)) && | |
37e9b6a6 AD |
727 | enc->enc_priv) { |
728 | if (rdev->is_atom_bios) { | |
729 | struct radeon_encoder_atom_dig *dig = enc->enc_priv; | |
730 | if (dig->bl_dev) { | |
731 | target = enc; | |
732 | break; | |
733 | } | |
734 | } else { | |
735 | struct radeon_encoder_lvds *dig = enc->enc_priv; | |
736 | if (dig->bl_dev) { | |
737 | target = enc; | |
738 | break; | |
739 | } | |
740 | } | |
fda4b25c LT |
741 | } |
742 | } | |
743 | ||
37e9b6a6 | 744 | atif->encoder_for_bl = target; |
fda4b25c LT |
745 | if (!target) { |
746 | /* Brightness change notification is enabled, but we | |
747 | * didn't find a backlight controller, this should | |
748 | * never happen. | |
749 | */ | |
750 | DRM_ERROR("Cannot find a backlight controller\n"); | |
751 | } | |
752 | } | |
d7a2952f | 753 | |
ce3cf821 LT |
754 | if (atif->functions.sbios_requests && !atif->functions.system_params) { |
755 | /* XXX check this workraround, if sbios request function is | |
756 | * present we have to see how it's configured in the system | |
757 | * params | |
758 | */ | |
759 | atif->functions.system_params = true; | |
760 | } | |
761 | ||
762 | if (atif->functions.system_params) { | |
763 | ret = radeon_atif_get_notification_params(handle, | |
764 | &atif->notification_cfg); | |
765 | if (ret) { | |
766 | DRM_DEBUG_DRIVER("Call to GET_SYSTEM_PARAMS failed: %d\n", | |
767 | ret); | |
768 | /* Disable notification */ | |
769 | atif->notification_cfg.enabled = false; | |
770 | } | |
771 | } | |
d7a2952f | 772 | |
ce3cf821 | 773 | out: |
c4917074 AD |
774 | rdev->acpi_nb.notifier_call = radeon_acpi_event; |
775 | register_acpi_notifier(&rdev->acpi_nb); | |
776 | ||
86504672 | 777 | return ret; |
d7a2952f AM |
778 | } |
779 | ||
c3c65160 AD |
780 | /** |
781 | * radeon_acpi_fini - tear down driver acpi support | |
782 | * | |
783 | * @rdev: radeon_device pointer | |
784 | * | |
785 | * Unregisters with the acpi notifier chain (all asics). | |
786 | */ | |
c4917074 AD |
787 | void radeon_acpi_fini(struct radeon_device *rdev) |
788 | { | |
789 | unregister_acpi_notifier(&rdev->acpi_nb); | |
790 | } |