1 /*
2 * Copyright 2014 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 * Authors: Slava Grigorev <slava.grigorev@amd.com>
23 */
24
25 #include <linux/gcd.h>
26 #include <drm/drmP.h>
27 #include <drm/drm_crtc.h>
28 #include "radeon.h"
29 #include "atom.h"
30 #include "radeon_audio.h"
31
32 #if 0
33 void r600_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
34 u8 enable_mask);
35 #endif
36 void dce4_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
37 u8 enable_mask);
38 #if 0
39 void dce6_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
40 u8 enable_mask);
41 #endif
42 u32 dce6_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg);
43 void dce6_endpoint_wreg(struct radeon_device *rdev,
44 u32 offset, u32 reg, u32 v);
45 void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,
46 struct cea_sad *sads, int sad_count);
47 void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
48 struct cea_sad *sads, int sad_count);
49 void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
50 struct cea_sad *sads, int sad_count);
51 void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
52 u8 *sadb, int sad_count);
53 void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
54 u8 *sadb, int sad_count);
55 void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
56 u8 *sadb, int sad_count);
57 void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
58 u8 *sadb, int sad_count);
59 void dce6_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
60 u8 *sadb, int sad_count);
61 void dce6_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
62 u8 *sadb, int sad_count);
63 void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
64 struct drm_connector *connector, struct drm_display_mode *mode);
65 void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
66 struct drm_connector *connector, struct drm_display_mode *mode);
67 #if 0
68 struct r600_audio_pin* r600_audio_get_pin(struct radeon_device *rdev);
69 struct r600_audio_pin* dce6_audio_get_pin(struct radeon_device *rdev);
70 #endif
71 void dce6_afmt_select_pin(struct drm_encoder *encoder);
72 void r600_hdmi_audio_set_dto(struct radeon_device *rdev,
73 struct radeon_crtc *crtc, unsigned int clock);
74 void dce3_2_audio_set_dto(struct radeon_device *rdev,
75 struct radeon_crtc *crtc, unsigned int clock);
76 void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,
77 struct radeon_crtc *crtc, unsigned int clock);
78 void dce4_dp_audio_set_dto(struct radeon_device *rdev,
79 struct radeon_crtc *crtc, unsigned int clock);
80 void dce6_hdmi_audio_set_dto(struct radeon_device *rdev,
81 struct radeon_crtc *crtc, unsigned int clock);
82 void dce6_dp_audio_set_dto(struct radeon_device *rdev,
83 struct radeon_crtc *crtc, unsigned int clock);
84 void r600_set_avi_packet(struct radeon_device *rdev, u32 offset,
85 unsigned char *buffer, size_t size);
86 void evergreen_set_avi_packet(struct radeon_device *rdev, u32 offset,
87 unsigned char *buffer, size_t size);
88 void r600_hdmi_update_acr(struct drm_encoder *encoder, long offset,
89 const struct radeon_hdmi_acr *acr);
90 void dce3_2_hdmi_update_acr(struct drm_encoder *encoder, long offset,
91 const struct radeon_hdmi_acr *acr);
92 void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
93 const struct radeon_hdmi_acr *acr);
94 void r600_set_vbi_packet(struct drm_encoder *encoder, u32 offset);
95 void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset);
96 void dce4_hdmi_set_color_depth(struct drm_encoder *encoder,
97 u32 offset, int bpc);
98 void r600_set_audio_packet(struct drm_encoder *encoder, u32 offset);
99 void dce3_2_set_audio_packet(struct drm_encoder *encoder, u32 offset);
100 void dce4_set_audio_packet(struct drm_encoder *encoder, u32 offset);
101 void r600_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
102 void dce3_2_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
103 void dce4_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
104 static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
105 struct drm_display_mode *mode);
106 static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
107 struct drm_display_mode *mode);
108 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable);
109 void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable);
110 void evergreen_dp_enable(struct drm_encoder *encoder, bool enable);
111
112 static const u32 pin_offsets[7] =
113 {
114 (0x5e00 - 0x5e00),
115 (0x5e18 - 0x5e00),
116 (0x5e30 - 0x5e00),
117 (0x5e48 - 0x5e00),
118 (0x5e60 - 0x5e00),
119 (0x5e78 - 0x5e00),
120 (0x5e90 - 0x5e00),
121 };
122
radeon_audio_rreg(struct radeon_device * rdev,u32 offset,u32 reg)123 static u32 radeon_audio_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
124 {
125 return RREG32(reg);
126 }
127
radeon_audio_wreg(struct radeon_device * rdev,u32 offset,u32 reg,u32 v)128 static void radeon_audio_wreg(struct radeon_device *rdev, u32 offset,
129 u32 reg, u32 v)
130 {
131 WREG32(reg, v);
132 }
133
134 static struct radeon_audio_basic_funcs r600_funcs = {
135 .endpoint_rreg = radeon_audio_rreg,
136 .endpoint_wreg = radeon_audio_wreg,
137 .enable = r600_audio_enable,
138 };
139
140 static struct radeon_audio_basic_funcs dce32_funcs = {
141 .endpoint_rreg = radeon_audio_rreg,
142 .endpoint_wreg = radeon_audio_wreg,
143 .enable = r600_audio_enable,
144 };
145
146 static struct radeon_audio_basic_funcs dce4_funcs = {
147 .endpoint_rreg = radeon_audio_rreg,
148 .endpoint_wreg = radeon_audio_wreg,
149 .enable = dce4_audio_enable,
150 };
151
152 static struct radeon_audio_basic_funcs dce6_funcs = {
153 .endpoint_rreg = dce6_endpoint_rreg,
154 .endpoint_wreg = dce6_endpoint_wreg,
155 .enable = dce6_audio_enable,
156 };
157
158 static struct radeon_audio_funcs r600_hdmi_funcs = {
159 .get_pin = r600_audio_get_pin,
160 .set_dto = r600_hdmi_audio_set_dto,
161 .update_acr = r600_hdmi_update_acr,
162 .set_vbi_packet = r600_set_vbi_packet,
163 .set_avi_packet = r600_set_avi_packet,
164 .set_audio_packet = r600_set_audio_packet,
165 .set_mute = r600_set_mute,
166 .mode_set = radeon_audio_hdmi_mode_set,
167 .dpms = r600_hdmi_enable,
168 };
169
170 static struct radeon_audio_funcs dce32_hdmi_funcs = {
171 .get_pin = r600_audio_get_pin,
172 .write_sad_regs = dce3_2_afmt_write_sad_regs,
173 .write_speaker_allocation = dce3_2_afmt_hdmi_write_speaker_allocation,
174 .set_dto = dce3_2_audio_set_dto,
175 .update_acr = dce3_2_hdmi_update_acr,
176 .set_vbi_packet = r600_set_vbi_packet,
177 .set_avi_packet = r600_set_avi_packet,
178 .set_audio_packet = dce3_2_set_audio_packet,
179 .set_mute = dce3_2_set_mute,
180 .mode_set = radeon_audio_hdmi_mode_set,
181 .dpms = r600_hdmi_enable,
182 };
183
184 static struct radeon_audio_funcs dce32_dp_funcs = {
185 .get_pin = r600_audio_get_pin,
186 .write_sad_regs = dce3_2_afmt_write_sad_regs,
187 .write_speaker_allocation = dce3_2_afmt_dp_write_speaker_allocation,
188 .set_dto = dce3_2_audio_set_dto,
189 .set_avi_packet = r600_set_avi_packet,
190 .set_audio_packet = dce3_2_set_audio_packet,
191 };
192
193 static struct radeon_audio_funcs dce4_hdmi_funcs = {
194 .get_pin = r600_audio_get_pin,
195 .write_sad_regs = evergreen_hdmi_write_sad_regs,
196 .write_speaker_allocation = dce4_afmt_hdmi_write_speaker_allocation,
197 .write_latency_fields = dce4_afmt_write_latency_fields,
198 .set_dto = dce4_hdmi_audio_set_dto,
199 .update_acr = evergreen_hdmi_update_acr,
200 .set_vbi_packet = dce4_set_vbi_packet,
201 .set_color_depth = dce4_hdmi_set_color_depth,
202 .set_avi_packet = evergreen_set_avi_packet,
203 .set_audio_packet = dce4_set_audio_packet,
204 .set_mute = dce4_set_mute,
205 .mode_set = radeon_audio_hdmi_mode_set,
206 .dpms = evergreen_hdmi_enable,
207 };
208
209 static struct radeon_audio_funcs dce4_dp_funcs = {
210 .get_pin = r600_audio_get_pin,
211 .write_sad_regs = evergreen_hdmi_write_sad_regs,
212 .write_speaker_allocation = dce4_afmt_dp_write_speaker_allocation,
213 .write_latency_fields = dce4_afmt_write_latency_fields,
214 .set_dto = dce4_dp_audio_set_dto,
215 .set_avi_packet = evergreen_set_avi_packet,
216 .set_audio_packet = dce4_set_audio_packet,
217 .mode_set = radeon_audio_dp_mode_set,
218 .dpms = evergreen_dp_enable,
219 };
220
221 static struct radeon_audio_funcs dce6_hdmi_funcs = {
222 .select_pin = dce6_afmt_select_pin,
223 .get_pin = dce6_audio_get_pin,
224 .write_sad_regs = dce6_afmt_write_sad_regs,
225 .write_speaker_allocation = dce6_afmt_hdmi_write_speaker_allocation,
226 .write_latency_fields = dce6_afmt_write_latency_fields,
227 .set_dto = dce6_hdmi_audio_set_dto,
228 .update_acr = evergreen_hdmi_update_acr,
229 .set_vbi_packet = dce4_set_vbi_packet,
230 .set_color_depth = dce4_hdmi_set_color_depth,
231 .set_avi_packet = evergreen_set_avi_packet,
232 .set_audio_packet = dce4_set_audio_packet,
233 .set_mute = dce4_set_mute,
234 .mode_set = radeon_audio_hdmi_mode_set,
235 .dpms = evergreen_hdmi_enable,
236 };
237
238 static struct radeon_audio_funcs dce6_dp_funcs = {
239 .select_pin = dce6_afmt_select_pin,
240 .get_pin = dce6_audio_get_pin,
241 .write_sad_regs = dce6_afmt_write_sad_regs,
242 .write_speaker_allocation = dce6_afmt_dp_write_speaker_allocation,
243 .write_latency_fields = dce6_afmt_write_latency_fields,
244 .set_dto = dce6_dp_audio_set_dto,
245 .set_avi_packet = evergreen_set_avi_packet,
246 .set_audio_packet = dce4_set_audio_packet,
247 .mode_set = radeon_audio_dp_mode_set,
248 .dpms = evergreen_dp_enable,
249 };
250
radeon_audio_enable(struct radeon_device * rdev,struct r600_audio_pin * pin,u8 enable_mask)251 static void radeon_audio_enable(struct radeon_device *rdev,
252 struct r600_audio_pin *pin, u8 enable_mask)
253 {
254 struct drm_encoder *encoder;
255 struct radeon_encoder *radeon_encoder;
256 struct radeon_encoder_atom_dig *dig;
257 int pin_count = 0;
258
259 if (!pin)
260 return;
261
262 if (rdev->mode_info.mode_config_initialized) {
263 list_for_each_entry(encoder, &rdev->ddev->mode_config.encoder_list, head) {
264 if (radeon_encoder_is_digital(encoder)) {
265 radeon_encoder = to_radeon_encoder(encoder);
266 dig = radeon_encoder->enc_priv;
267 if (dig->pin == pin)
268 pin_count++;
269 }
270 }
271
272 if ((pin_count > 1) && (enable_mask == 0))
273 return;
274 }
275
276 if (rdev->audio.funcs->enable)
277 rdev->audio.funcs->enable(rdev, pin, enable_mask);
278 }
279
radeon_audio_interface_init(struct radeon_device * rdev)280 static void radeon_audio_interface_init(struct radeon_device *rdev)
281 {
282 if (ASIC_IS_DCE6(rdev)) {
283 rdev->audio.funcs = &dce6_funcs;
284 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;
285 rdev->audio.dp_funcs = &dce6_dp_funcs;
286 } else if (ASIC_IS_DCE4(rdev)) {
287 rdev->audio.funcs = &dce4_funcs;
288 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;
289 rdev->audio.dp_funcs = &dce4_dp_funcs;
290 } else if (ASIC_IS_DCE32(rdev)) {
291 rdev->audio.funcs = &dce32_funcs;
292 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;
293 rdev->audio.dp_funcs = &dce32_dp_funcs;
294 } else {
295 rdev->audio.funcs = &r600_funcs;
296 rdev->audio.hdmi_funcs = &r600_hdmi_funcs;
297 rdev->audio.dp_funcs = 0;
298 }
299 }
300
radeon_audio_chipset_supported(struct radeon_device * rdev)301 static int radeon_audio_chipset_supported(struct radeon_device *rdev)
302 {
303 return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
304 }
305
radeon_audio_init(struct radeon_device * rdev)306 int radeon_audio_init(struct radeon_device *rdev)
307 {
308 int i;
309
310 if (!radeon_audio || !radeon_audio_chipset_supported(rdev))
311 return 0;
312
313 rdev->audio.enabled = true;
314
315 if (ASIC_IS_DCE83(rdev)) /* KB: 2 streams, 3 endpoints */
316 rdev->audio.num_pins = 3;
317 else if (ASIC_IS_DCE81(rdev)) /* KV: 4 streams, 7 endpoints */
318 rdev->audio.num_pins = 7;
319 else if (ASIC_IS_DCE8(rdev)) /* BN/HW: 6 streams, 7 endpoints */
320 rdev->audio.num_pins = 7;
321 else if (ASIC_IS_DCE64(rdev)) /* OL: 2 streams, 2 endpoints */
322 rdev->audio.num_pins = 2;
323 else if (ASIC_IS_DCE61(rdev)) /* TN: 4 streams, 6 endpoints */
324 rdev->audio.num_pins = 6;
325 else if (ASIC_IS_DCE6(rdev)) /* SI: 6 streams, 6 endpoints */
326 rdev->audio.num_pins = 6;
327 else
328 rdev->audio.num_pins = 1;
329
330 for (i = 0; i < rdev->audio.num_pins; i++) {
331 rdev->audio.pin[i].channels = -1;
332 rdev->audio.pin[i].rate = -1;
333 rdev->audio.pin[i].bits_per_sample = -1;
334 rdev->audio.pin[i].status_bits = 0;
335 rdev->audio.pin[i].category_code = 0;
336 rdev->audio.pin[i].connected = false;
337 rdev->audio.pin[i].offset = pin_offsets[i];
338 rdev->audio.pin[i].id = i;
339 }
340
341 radeon_audio_interface_init(rdev);
342
343 /* disable audio. it will be set up later */
344 for (i = 0; i < rdev->audio.num_pins; i++)
345 radeon_audio_enable(rdev, &rdev->audio.pin[i], 0);
346
347 return 0;
348 }
349
radeon_audio_endpoint_rreg(struct radeon_device * rdev,u32 offset,u32 reg)350 u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
351 {
352 if (rdev->audio.funcs->endpoint_rreg)
353 return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);
354
355 return 0;
356 }
357
radeon_audio_endpoint_wreg(struct radeon_device * rdev,u32 offset,u32 reg,u32 v)358 void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
359 u32 reg, u32 v)
360 {
361 if (rdev->audio.funcs->endpoint_wreg)
362 rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);
363 }
364
radeon_audio_write_sad_regs(struct drm_encoder * encoder)365 static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
366 {
367 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
368 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
369 struct cea_sad *sads;
370 int sad_count;
371
372 if (!connector)
373 return;
374
375 sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
376 if (sad_count <= 0) {
377 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
378 return;
379 }
380 BUG_ON(!sads);
381
382 if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
383 radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
384
385 kfree(sads);
386 }
387
radeon_audio_write_speaker_allocation(struct drm_encoder * encoder)388 static void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
389 {
390 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
391 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
392 u8 *sadb = NULL;
393 int sad_count;
394
395 if (!connector)
396 return;
397
398 sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector),
399 &sadb);
400 if (sad_count < 0) {
401 DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",
402 sad_count);
403 sad_count = 0;
404 }
405
406 if (radeon_encoder->audio && radeon_encoder->audio->write_speaker_allocation)
407 radeon_encoder->audio->write_speaker_allocation(encoder, sadb, sad_count);
408
409 kfree(sadb);
410 }
411
radeon_audio_write_latency_fields(struct drm_encoder * encoder,struct drm_display_mode * mode)412 static void radeon_audio_write_latency_fields(struct drm_encoder *encoder,
413 struct drm_display_mode *mode)
414 {
415 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
416 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
417
418 if (!connector)
419 return;
420
421 if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)
422 radeon_encoder->audio->write_latency_fields(encoder, connector, mode);
423 }
424
radeon_audio_get_pin(struct drm_encoder * encoder)425 struct r600_audio_pin* radeon_audio_get_pin(struct drm_encoder *encoder)
426 {
427 struct radeon_device *rdev = encoder->dev->dev_private;
428 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
429
430 if (radeon_encoder->audio && radeon_encoder->audio->get_pin)
431 return radeon_encoder->audio->get_pin(rdev);
432
433 return NULL;
434 }
435
radeon_audio_select_pin(struct drm_encoder * encoder)436 static void radeon_audio_select_pin(struct drm_encoder *encoder)
437 {
438 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
439
440 if (radeon_encoder->audio && radeon_encoder->audio->select_pin)
441 radeon_encoder->audio->select_pin(encoder);
442 }
443
radeon_audio_detect(struct drm_connector * connector,struct drm_encoder * encoder,enum drm_connector_status status)444 void radeon_audio_detect(struct drm_connector *connector,
445 struct drm_encoder *encoder,
446 enum drm_connector_status status)
447 {
448 struct drm_device *dev = connector->dev;
449 struct radeon_device *rdev = dev->dev_private;
450 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
451 struct radeon_encoder_atom_dig *dig;
452
453 if (!radeon_audio_chipset_supported(rdev))
454 return;
455
456 if (!radeon_encoder_is_digital(encoder))
457 return;
458
459 dig = radeon_encoder->enc_priv;
460
461 if (status == connector_status_connected) {
462 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
463 struct radeon_connector *radeon_connector = to_radeon_connector(connector);
464
465 if (radeon_dp_getsinktype(radeon_connector) ==
466 CONNECTOR_OBJECT_ID_DISPLAYPORT)
467 radeon_encoder->audio = rdev->audio.dp_funcs;
468 else
469 radeon_encoder->audio = rdev->audio.hdmi_funcs;
470 } else {
471 radeon_encoder->audio = rdev->audio.hdmi_funcs;
472 }
473
474 if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
475 if (!dig->pin)
476 dig->pin = radeon_audio_get_pin(encoder);
477 radeon_audio_enable(rdev, dig->pin, 0xf);
478 } else {
479 radeon_audio_enable(rdev, dig->pin, 0);
480 dig->pin = NULL;
481 }
482 } else {
483 radeon_audio_enable(rdev, dig->pin, 0);
484 dig->pin = NULL;
485 }
486 }
487
radeon_audio_fini(struct radeon_device * rdev)488 void radeon_audio_fini(struct radeon_device *rdev)
489 {
490 int i;
491
492 if (!rdev->audio.enabled)
493 return;
494
495 for (i = 0; i < rdev->audio.num_pins; i++)
496 radeon_audio_enable(rdev, &rdev->audio.pin[i], 0);
497
498 rdev->audio.enabled = false;
499 }
500
radeon_audio_set_dto(struct drm_encoder * encoder,unsigned int clock)501 static void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock)
502 {
503 struct radeon_device *rdev = encoder->dev->dev_private;
504 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
505 struct radeon_crtc *crtc = to_radeon_crtc(encoder->crtc);
506
507 if (radeon_encoder->audio && radeon_encoder->audio->set_dto)
508 radeon_encoder->audio->set_dto(rdev, crtc, clock);
509 }
510
radeon_audio_set_avi_packet(struct drm_encoder * encoder,struct drm_display_mode * mode)511 static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
512 struct drm_display_mode *mode)
513 {
514 struct radeon_device *rdev = encoder->dev->dev_private;
515 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
516 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
517 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
518 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
519 struct hdmi_avi_infoframe frame;
520 int err;
521
522 if (!connector)
523 return -EINVAL;
524
525 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
526 if (err < 0) {
527 DRM_ERROR("failed to setup AVI infoframe: %d\n", err);
528 return err;
529 }
530
531 if (radeon_encoder->output_csc != RADEON_OUTPUT_CSC_BYPASS) {
532 if (drm_rgb_quant_range_selectable(radeon_connector_edid(connector))) {
533 if (radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB)
534 frame.quantization_range = HDMI_QUANTIZATION_RANGE_LIMITED;
535 else
536 frame.quantization_range = HDMI_QUANTIZATION_RANGE_FULL;
537 } else {
538 frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
539 }
540 }
541
542 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
543 if (err < 0) {
544 DRM_ERROR("failed to pack AVI infoframe: %d\n", err);
545 return err;
546 }
547
548 if (dig && dig->afmt && radeon_encoder->audio &&
549 radeon_encoder->audio->set_avi_packet)
550 radeon_encoder->audio->set_avi_packet(rdev, dig->afmt->offset,
551 buffer, sizeof(buffer));
552
553 return 0;
554 }
555
556 /*
557 * calculate CTS and N values if they are not found in the table
558 */
radeon_audio_calc_cts(unsigned int clock,int * CTS,int * N,int freq)559 static void radeon_audio_calc_cts(unsigned int clock, int *CTS, int *N, int freq)
560 {
561 int n, cts;
562 unsigned long div, mul;
563
564 /* Safe, but overly large values */
565 n = 128 * freq;
566 cts = clock * 1000;
567
568 /* Smallest valid fraction */
569 div = gcd(n, cts);
570
571 n /= div;
572 cts /= div;
573
574 /*
575 * The optimal N is 128*freq/1000. Calculate the closest larger
576 * value that doesn't truncate any bits.
577 */
578 mul = ((128*freq/1000) + (n-1))/n;
579
580 n *= mul;
581 cts *= mul;
582
583 /* Check that we are in spec (not always possible) */
584 if (n < (128*freq/1500))
585 pr_warn("Calculated ACR N value is too small. You may experience audio problems.\n");
586 if (n > (128*freq/300))
587 pr_warn("Calculated ACR N value is too large. You may experience audio problems.\n");
588
589 *N = n;
590 *CTS = cts;
591
592 DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n",
593 *N, *CTS, freq);
594 }
595
radeon_audio_acr(unsigned int clock)596 static const struct radeon_hdmi_acr* radeon_audio_acr(unsigned int clock)
597 {
598 static struct radeon_hdmi_acr res;
599 u8 i;
600
601 static const struct radeon_hdmi_acr hdmi_predefined_acr[] = {
602 /* 32kHz 44.1kHz 48kHz */
603 /* Clock N CTS N CTS N CTS */
604 { 25175, 4096, 25175, 28224, 125875, 6144, 25175 }, /* 25,20/1.001 MHz */
605 { 25200, 4096, 25200, 6272, 28000, 6144, 25200 }, /* 25.20 MHz */
606 { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */
607 { 27027, 4096, 27027, 6272, 30030, 6144, 27027 }, /* 27.00*1.001 MHz */
608 { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */
609 { 54054, 4096, 54054, 6272, 60060, 6144, 54054 }, /* 54.00*1.001 MHz */
610 { 74176, 4096, 74176, 5733, 75335, 6144, 74176 }, /* 74.25/1.001 MHz */
611 { 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */
612 { 148352, 4096, 148352, 5733, 150670, 6144, 148352 }, /* 148.50/1.001 MHz */
613 { 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */
614 };
615
616 /* Precalculated values for common clocks */
617 for (i = 0; i < ARRAY_SIZE(hdmi_predefined_acr); i++)
618 if (hdmi_predefined_acr[i].clock == clock)
619 return &hdmi_predefined_acr[i];
620
621 /* And odd clocks get manually calculated */
622 radeon_audio_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000);
623 radeon_audio_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100);
624 radeon_audio_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000);
625
626 return &res;
627 }
628
629 /*
630 * update the N and CTS parameters for a given pixel clock rate
631 */
radeon_audio_update_acr(struct drm_encoder * encoder,unsigned int clock)632 static void radeon_audio_update_acr(struct drm_encoder *encoder, unsigned int clock)
633 {
634 const struct radeon_hdmi_acr *acr = radeon_audio_acr(clock);
635 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
636 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
637
638 if (!dig || !dig->afmt)
639 return;
640
641 if (radeon_encoder->audio && radeon_encoder->audio->update_acr)
642 radeon_encoder->audio->update_acr(encoder, dig->afmt->offset, acr);
643 }
644
radeon_audio_set_vbi_packet(struct drm_encoder * encoder)645 static void radeon_audio_set_vbi_packet(struct drm_encoder *encoder)
646 {
647 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
648 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
649
650 if (!dig || !dig->afmt)
651 return;
652
653 if (radeon_encoder->audio && radeon_encoder->audio->set_vbi_packet)
654 radeon_encoder->audio->set_vbi_packet(encoder, dig->afmt->offset);
655 }
656
radeon_hdmi_set_color_depth(struct drm_encoder * encoder)657 static void radeon_hdmi_set_color_depth(struct drm_encoder *encoder)
658 {
659 int bpc = 8;
660 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
661 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
662
663 if (!dig || !dig->afmt)
664 return;
665
666 if (encoder->crtc) {
667 struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
668 bpc = radeon_crtc->bpc;
669 }
670
671 if (radeon_encoder->audio && radeon_encoder->audio->set_color_depth)
672 radeon_encoder->audio->set_color_depth(encoder, dig->afmt->offset, bpc);
673 }
674
radeon_audio_set_audio_packet(struct drm_encoder * encoder)675 static void radeon_audio_set_audio_packet(struct drm_encoder *encoder)
676 {
677 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
678 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
679
680 if (!dig || !dig->afmt)
681 return;
682
683 if (radeon_encoder->audio && radeon_encoder->audio->set_audio_packet)
684 radeon_encoder->audio->set_audio_packet(encoder, dig->afmt->offset);
685 }
686
radeon_audio_set_mute(struct drm_encoder * encoder,bool mute)687 static void radeon_audio_set_mute(struct drm_encoder *encoder, bool mute)
688 {
689 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
690 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
691
692 if (!dig || !dig->afmt)
693 return;
694
695 if (radeon_encoder->audio && radeon_encoder->audio->set_mute)
696 radeon_encoder->audio->set_mute(encoder, dig->afmt->offset, mute);
697 }
698
699 /*
700 * update the info frames with the data from the current display mode
701 */
radeon_audio_hdmi_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode)702 static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
703 struct drm_display_mode *mode)
704 {
705 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
706 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
707 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
708
709 if (!dig || !dig->afmt)
710 return;
711
712 if (!connector)
713 return;
714
715 if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
716 radeon_audio_set_mute(encoder, true);
717
718 radeon_audio_write_speaker_allocation(encoder);
719 radeon_audio_write_sad_regs(encoder);
720 radeon_audio_write_latency_fields(encoder, mode);
721 radeon_audio_set_dto(encoder, mode->clock);
722 radeon_audio_set_vbi_packet(encoder);
723 radeon_hdmi_set_color_depth(encoder);
724 radeon_audio_update_acr(encoder, mode->clock);
725 radeon_audio_set_audio_packet(encoder);
726 radeon_audio_select_pin(encoder);
727
728 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
729 return;
730
731 radeon_audio_set_mute(encoder, false);
732 } else {
733 radeon_hdmi_set_color_depth(encoder);
734
735 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
736 return;
737 }
738 }
739
radeon_audio_dp_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode)740 static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
741 struct drm_display_mode *mode)
742 {
743 struct drm_device *dev = encoder->dev;
744 struct radeon_device *rdev = dev->dev_private;
745 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
746 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
747 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
748
749 if (!dig || !dig->afmt)
750 return;
751
752 if (!connector)
753 return;
754
755 if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
756 radeon_audio_write_speaker_allocation(encoder);
757 radeon_audio_write_sad_regs(encoder);
758 radeon_audio_write_latency_fields(encoder, mode);
759 radeon_audio_set_dto(encoder, rdev->clock.vco_freq * 10);
760 radeon_audio_set_audio_packet(encoder);
761 radeon_audio_select_pin(encoder);
762
763 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
764 return;
765 }
766 }
767
radeon_audio_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode)768 void radeon_audio_mode_set(struct drm_encoder *encoder,
769 struct drm_display_mode *mode)
770 {
771 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
772
773 if (radeon_encoder->audio && radeon_encoder->audio->mode_set)
774 radeon_encoder->audio->mode_set(encoder, mode);
775 }
776
radeon_audio_dpms(struct drm_encoder * encoder,int mode)777 void radeon_audio_dpms(struct drm_encoder *encoder, int mode)
778 {
779 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
780
781 if (radeon_encoder->audio && radeon_encoder->audio->dpms)
782 radeon_encoder->audio->dpms(encoder, mode == DRM_MODE_DPMS_ON);
783 }
784
radeon_audio_decode_dfs_div(unsigned int div)785 unsigned int radeon_audio_decode_dfs_div(unsigned int div)
786 {
787 if (div >= 8 && div < 64)
788 return (div - 8) * 25 + 200;
789 else if (div >= 64 && div < 96)
790 return (div - 64) * 50 + 1600;
791 else if (div >= 96 && div < 128)
792 return (div - 96) * 100 + 3200;
793 else
794 return 0;
795 }
796