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 <linux/component.h>
27
28#include <drm/drm_crtc.h>
29#include <drm/drm_eld.h>
30#include <drm/drm_edid.h>
31#include "dce6_afmt.h"
32#include "evergreen_hdmi.h"
33#include "radeon.h"
34#include "atom.h"
35#include "r600.h"
36#include "radeon_audio.h"
37
38void dce6_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
39 u8 enable_mask);
40struct r600_audio_pin *r600_audio_get_pin(struct radeon_device *rdev);
41struct r600_audio_pin *dce6_audio_get_pin(struct radeon_device *rdev);
42static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
43 struct drm_display_mode *mode);
44static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
45 struct drm_display_mode *mode);
46
47static const u32 pin_offsets[7] = {
48 (0x5e00 - 0x5e00),
49 (0x5e18 - 0x5e00),
50 (0x5e30 - 0x5e00),
51 (0x5e48 - 0x5e00),
52 (0x5e60 - 0x5e00),
53 (0x5e78 - 0x5e00),
54 (0x5e90 - 0x5e00),
55};
56
57static u32 radeon_audio_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
58{
59 return RREG32(reg);
60}
61
62static void radeon_audio_wreg(struct radeon_device *rdev, u32 offset,
63 u32 reg, u32 v)
64{
65 WREG32(reg, v);
66}
67
68static struct radeon_audio_basic_funcs r600_funcs = {
69 .endpoint_rreg = radeon_audio_rreg,
70 .endpoint_wreg = radeon_audio_wreg,
71 .enable = r600_audio_enable,
72};
73
74static struct radeon_audio_basic_funcs dce32_funcs = {
75 .endpoint_rreg = radeon_audio_rreg,
76 .endpoint_wreg = radeon_audio_wreg,
77 .enable = r600_audio_enable,
78};
79
80static struct radeon_audio_basic_funcs dce4_funcs = {
81 .endpoint_rreg = radeon_audio_rreg,
82 .endpoint_wreg = radeon_audio_wreg,
83 .enable = dce4_audio_enable,
84};
85
86static struct radeon_audio_basic_funcs dce6_funcs = {
87 .endpoint_rreg = dce6_endpoint_rreg,
88 .endpoint_wreg = dce6_endpoint_wreg,
89 .enable = dce6_audio_enable,
90};
91
92static struct radeon_audio_funcs r600_hdmi_funcs = {
93 .get_pin = r600_audio_get_pin,
94 .set_dto = r600_hdmi_audio_set_dto,
95 .update_acr = r600_hdmi_update_acr,
96 .set_vbi_packet = r600_set_vbi_packet,
97 .set_avi_packet = r600_set_avi_packet,
98 .set_audio_packet = r600_set_audio_packet,
99 .set_mute = r600_set_mute,
100 .mode_set = radeon_audio_hdmi_mode_set,
101 .dpms = r600_hdmi_enable,
102};
103
104static struct radeon_audio_funcs dce32_hdmi_funcs = {
105 .get_pin = r600_audio_get_pin,
106 .write_sad_regs = dce3_2_afmt_write_sad_regs,
107 .write_speaker_allocation = dce3_2_afmt_hdmi_write_speaker_allocation,
108 .set_dto = dce3_2_audio_set_dto,
109 .update_acr = dce3_2_hdmi_update_acr,
110 .set_vbi_packet = r600_set_vbi_packet,
111 .set_avi_packet = r600_set_avi_packet,
112 .set_audio_packet = dce3_2_set_audio_packet,
113 .set_mute = dce3_2_set_mute,
114 .mode_set = radeon_audio_hdmi_mode_set,
115 .dpms = r600_hdmi_enable,
116};
117
118static struct radeon_audio_funcs dce32_dp_funcs = {
119 .get_pin = r600_audio_get_pin,
120 .write_sad_regs = dce3_2_afmt_write_sad_regs,
121 .write_speaker_allocation = dce3_2_afmt_dp_write_speaker_allocation,
122 .set_dto = dce3_2_audio_set_dto,
123 .set_avi_packet = r600_set_avi_packet,
124 .set_audio_packet = dce3_2_set_audio_packet,
125};
126
127static struct radeon_audio_funcs dce4_hdmi_funcs = {
128 .get_pin = r600_audio_get_pin,
129 .write_sad_regs = evergreen_hdmi_write_sad_regs,
130 .write_speaker_allocation = dce4_afmt_hdmi_write_speaker_allocation,
131 .write_latency_fields = dce4_afmt_write_latency_fields,
132 .set_dto = dce4_hdmi_audio_set_dto,
133 .update_acr = evergreen_hdmi_update_acr,
134 .set_vbi_packet = dce4_set_vbi_packet,
135 .set_color_depth = dce4_hdmi_set_color_depth,
136 .set_avi_packet = evergreen_set_avi_packet,
137 .set_audio_packet = dce4_set_audio_packet,
138 .set_mute = dce4_set_mute,
139 .mode_set = radeon_audio_hdmi_mode_set,
140 .dpms = evergreen_hdmi_enable,
141};
142
143static struct radeon_audio_funcs dce4_dp_funcs = {
144 .get_pin = r600_audio_get_pin,
145 .write_sad_regs = evergreen_hdmi_write_sad_regs,
146 .write_speaker_allocation = dce4_afmt_dp_write_speaker_allocation,
147 .write_latency_fields = dce4_afmt_write_latency_fields,
148 .set_dto = dce4_dp_audio_set_dto,
149 .set_avi_packet = evergreen_set_avi_packet,
150 .set_audio_packet = dce4_set_audio_packet,
151 .mode_set = radeon_audio_dp_mode_set,
152 .dpms = evergreen_dp_enable,
153};
154
155static struct radeon_audio_funcs dce6_hdmi_funcs = {
156 .select_pin = dce6_afmt_select_pin,
157 .get_pin = dce6_audio_get_pin,
158 .write_sad_regs = dce6_afmt_write_sad_regs,
159 .write_speaker_allocation = dce6_afmt_hdmi_write_speaker_allocation,
160 .write_latency_fields = dce6_afmt_write_latency_fields,
161 .set_dto = dce6_hdmi_audio_set_dto,
162 .update_acr = evergreen_hdmi_update_acr,
163 .set_vbi_packet = dce4_set_vbi_packet,
164 .set_color_depth = dce4_hdmi_set_color_depth,
165 .set_avi_packet = evergreen_set_avi_packet,
166 .set_audio_packet = dce4_set_audio_packet,
167 .set_mute = dce4_set_mute,
168 .mode_set = radeon_audio_hdmi_mode_set,
169 .dpms = evergreen_hdmi_enable,
170};
171
172static struct radeon_audio_funcs dce6_dp_funcs = {
173 .select_pin = dce6_afmt_select_pin,
174 .get_pin = dce6_audio_get_pin,
175 .write_sad_regs = dce6_afmt_write_sad_regs,
176 .write_speaker_allocation = dce6_afmt_dp_write_speaker_allocation,
177 .write_latency_fields = dce6_afmt_write_latency_fields,
178 .set_dto = dce6_dp_audio_set_dto,
179 .set_avi_packet = evergreen_set_avi_packet,
180 .set_audio_packet = dce4_set_audio_packet,
181 .mode_set = radeon_audio_dp_mode_set,
182 .dpms = evergreen_dp_enable,
183};
184
185static void radeon_audio_component_notify(struct radeon_device *rdev, int port);
186
187static void radeon_audio_enable(struct radeon_device *rdev,
188 struct r600_audio_pin *pin, u8 enable_mask)
189{
190 struct drm_encoder *encoder;
191 struct radeon_encoder *radeon_encoder;
192 struct radeon_encoder_atom_dig *dig;
193 int pin_count = 0;
194
195 if (!pin)
196 return;
197
198 if (rdev->mode_info.mode_config_initialized) {
199 list_for_each_entry(encoder, &rdev_to_drm(rdev)->mode_config.encoder_list, head) {
200 if (radeon_encoder_is_digital(encoder)) {
201 radeon_encoder = to_radeon_encoder(encoder);
202 dig = radeon_encoder->enc_priv;
203 if (dig->pin == pin)
204 pin_count++;
205 }
206 }
207
208 if ((pin_count > 1) && (enable_mask == 0))
209 return;
210 }
211
212 if (rdev->audio.funcs->enable)
213 rdev->audio.funcs->enable(rdev, pin, enable_mask);
214
215 radeon_audio_component_notify(rdev, port: pin->id);
216}
217
218static void radeon_audio_interface_init(struct radeon_device *rdev)
219{
220 if (ASIC_IS_DCE6(rdev)) {
221 rdev->audio.funcs = &dce6_funcs;
222 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;
223 rdev->audio.dp_funcs = &dce6_dp_funcs;
224 } else if (ASIC_IS_DCE4(rdev)) {
225 rdev->audio.funcs = &dce4_funcs;
226 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;
227 rdev->audio.dp_funcs = &dce4_dp_funcs;
228 } else if (ASIC_IS_DCE32(rdev)) {
229 rdev->audio.funcs = &dce32_funcs;
230 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;
231 rdev->audio.dp_funcs = &dce32_dp_funcs;
232 } else {
233 rdev->audio.funcs = &r600_funcs;
234 rdev->audio.hdmi_funcs = &r600_hdmi_funcs;
235 rdev->audio.dp_funcs = NULL;
236 }
237}
238
239static int radeon_audio_chipset_supported(struct radeon_device *rdev)
240{
241 return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
242}
243
244int radeon_audio_init(struct radeon_device *rdev)
245{
246 int i;
247
248 if (!radeon_audio || !radeon_audio_chipset_supported(rdev))
249 return 0;
250
251 rdev->audio.enabled = true;
252
253 if (ASIC_IS_DCE83(rdev)) /* KB: 2 streams, 3 endpoints */
254 rdev->audio.num_pins = 3;
255 else if (ASIC_IS_DCE81(rdev)) /* KV: 4 streams, 7 endpoints */
256 rdev->audio.num_pins = 7;
257 else if (ASIC_IS_DCE8(rdev)) /* BN/HW: 6 streams, 7 endpoints */
258 rdev->audio.num_pins = 7;
259 else if (ASIC_IS_DCE64(rdev)) /* OL: 2 streams, 2 endpoints */
260 rdev->audio.num_pins = 2;
261 else if (ASIC_IS_DCE61(rdev)) /* TN: 4 streams, 6 endpoints */
262 rdev->audio.num_pins = 6;
263 else if (ASIC_IS_DCE6(rdev)) /* SI: 6 streams, 6 endpoints */
264 rdev->audio.num_pins = 6;
265 else
266 rdev->audio.num_pins = 1;
267
268 for (i = 0; i < rdev->audio.num_pins; i++) {
269 rdev->audio.pin[i].channels = -1;
270 rdev->audio.pin[i].rate = -1;
271 rdev->audio.pin[i].bits_per_sample = -1;
272 rdev->audio.pin[i].status_bits = 0;
273 rdev->audio.pin[i].category_code = 0;
274 rdev->audio.pin[i].connected = false;
275 rdev->audio.pin[i].offset = pin_offsets[i];
276 rdev->audio.pin[i].id = i;
277 }
278
279 radeon_audio_interface_init(rdev);
280
281 /* disable audio. it will be set up later */
282 for (i = 0; i < rdev->audio.num_pins; i++)
283 radeon_audio_enable(rdev, pin: &rdev->audio.pin[i], enable_mask: 0);
284
285 return 0;
286}
287
288u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
289{
290 if (rdev->audio.funcs->endpoint_rreg)
291 return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);
292
293 return 0;
294}
295
296void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
297 u32 reg, u32 v)
298{
299 if (rdev->audio.funcs->endpoint_wreg)
300 rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);
301}
302
303static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
304{
305 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
306 struct radeon_connector *radeon_connector = to_radeon_connector(connector);
307 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
308 struct cea_sad *sads;
309 int sad_count;
310
311 if (!connector)
312 return;
313
314 sad_count = drm_edid_to_sad(edid: radeon_connector->edid, sads: &sads);
315 if (sad_count < 0)
316 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
317 if (sad_count <= 0)
318 return;
319 BUG_ON(!sads);
320
321 if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
322 radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
323
324 kfree(objp: sads);
325}
326
327static void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
328{
329 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
330 struct radeon_connector *radeon_connector = to_radeon_connector(connector);
331 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
332 u8 *sadb = NULL;
333 int sad_count;
334
335 if (!connector)
336 return;
337
338 sad_count = drm_edid_to_speaker_allocation(edid: radeon_connector->edid, sadb: &sadb);
339 if (sad_count < 0) {
340 DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",
341 sad_count);
342 sad_count = 0;
343 }
344
345 if (radeon_encoder->audio && radeon_encoder->audio->write_speaker_allocation)
346 radeon_encoder->audio->write_speaker_allocation(encoder, sadb, sad_count);
347
348 kfree(objp: sadb);
349}
350
351static void radeon_audio_write_latency_fields(struct drm_encoder *encoder,
352 struct drm_display_mode *mode)
353{
354 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
355 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
356
357 if (!connector)
358 return;
359
360 if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)
361 radeon_encoder->audio->write_latency_fields(encoder, connector, mode);
362}
363
364struct r600_audio_pin *radeon_audio_get_pin(struct drm_encoder *encoder)
365{
366 struct radeon_device *rdev = encoder->dev->dev_private;
367 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
368
369 if (radeon_encoder->audio && radeon_encoder->audio->get_pin)
370 return radeon_encoder->audio->get_pin(rdev);
371
372 return NULL;
373}
374
375static void radeon_audio_select_pin(struct drm_encoder *encoder)
376{
377 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
378
379 if (radeon_encoder->audio && radeon_encoder->audio->select_pin)
380 radeon_encoder->audio->select_pin(encoder);
381}
382
383void radeon_audio_detect(struct drm_connector *connector,
384 struct drm_encoder *encoder,
385 enum drm_connector_status status)
386{
387 struct drm_device *dev = connector->dev;
388 struct radeon_device *rdev = dev->dev_private;
389 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
390 struct radeon_encoder_atom_dig *dig;
391
392 if (!radeon_audio_chipset_supported(rdev))
393 return;
394
395 if (!radeon_encoder_is_digital(encoder))
396 return;
397
398 dig = radeon_encoder->enc_priv;
399
400 if (status == connector_status_connected) {
401 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
402 struct radeon_connector *radeon_connector = to_radeon_connector(connector);
403
404 if (radeon_dp_getsinktype(radeon_connector) ==
405 CONNECTOR_OBJECT_ID_DISPLAYPORT)
406 radeon_encoder->audio = rdev->audio.dp_funcs;
407 else
408 radeon_encoder->audio = rdev->audio.hdmi_funcs;
409 } else {
410 radeon_encoder->audio = rdev->audio.hdmi_funcs;
411 }
412
413 if (connector->display_info.has_audio) {
414 if (!dig->pin)
415 dig->pin = radeon_audio_get_pin(encoder);
416 radeon_audio_enable(rdev, pin: dig->pin, enable_mask: 0xf);
417 } else {
418 radeon_audio_enable(rdev, pin: dig->pin, enable_mask: 0);
419 dig->pin = NULL;
420 }
421 } else {
422 radeon_audio_enable(rdev, pin: dig->pin, enable_mask: 0);
423 dig->pin = NULL;
424 }
425}
426
427void radeon_audio_fini(struct radeon_device *rdev)
428{
429 int i;
430
431 if (!rdev->audio.enabled)
432 return;
433
434 for (i = 0; i < rdev->audio.num_pins; i++)
435 radeon_audio_enable(rdev, pin: &rdev->audio.pin[i], enable_mask: 0);
436
437 rdev->audio.enabled = false;
438}
439
440static void radeon_audio_set_dto(struct drm_encoder *encoder, unsigned int clock)
441{
442 struct radeon_device *rdev = encoder->dev->dev_private;
443 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
444 struct radeon_crtc *crtc = to_radeon_crtc(encoder->crtc);
445
446 if (radeon_encoder->audio && radeon_encoder->audio->set_dto)
447 radeon_encoder->audio->set_dto(rdev, crtc, clock);
448}
449
450static int radeon_audio_set_avi_packet(struct drm_encoder *encoder,
451 struct drm_display_mode *mode)
452{
453 struct radeon_device *rdev = encoder->dev->dev_private;
454 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
455 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
456 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
457 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
458 struct hdmi_avi_infoframe frame;
459 int err;
460
461 if (!connector)
462 return -EINVAL;
463
464 err = drm_hdmi_avi_infoframe_from_display_mode(frame: &frame, connector, mode);
465 if (err < 0) {
466 DRM_ERROR("failed to setup AVI infoframe: %d\n", err);
467 return err;
468 }
469
470 if (radeon_encoder->output_csc != RADEON_OUTPUT_CSC_BYPASS) {
471 drm_hdmi_avi_infoframe_quant_range(frame: &frame, connector, mode,
472 rgb_quant_range: radeon_encoder->output_csc == RADEON_OUTPUT_CSC_TVRGB ?
473 HDMI_QUANTIZATION_RANGE_LIMITED :
474 HDMI_QUANTIZATION_RANGE_FULL);
475 }
476
477 err = hdmi_avi_infoframe_pack(frame: &frame, buffer, size: sizeof(buffer));
478 if (err < 0) {
479 DRM_ERROR("failed to pack AVI infoframe: %d\n", err);
480 return err;
481 }
482
483 if (dig && dig->afmt && radeon_encoder->audio &&
484 radeon_encoder->audio->set_avi_packet)
485 radeon_encoder->audio->set_avi_packet(rdev, dig->afmt->offset,
486 buffer, sizeof(buffer));
487
488 return 0;
489}
490
491/*
492 * calculate CTS and N values if they are not found in the table
493 */
494static void radeon_audio_calc_cts(unsigned int clock, int *CTS, int *N, int freq)
495{
496 int n, cts;
497 unsigned long div, mul;
498
499 /* Safe, but overly large values */
500 n = 128 * freq;
501 cts = clock * 1000;
502
503 /* Smallest valid fraction */
504 div = gcd(a: n, b: cts);
505
506 n /= div;
507 cts /= div;
508
509 /*
510 * The optimal N is 128*freq/1000. Calculate the closest larger
511 * value that doesn't truncate any bits.
512 */
513 mul = ((128*freq/1000) + (n-1))/n;
514
515 n *= mul;
516 cts *= mul;
517
518 /* Check that we are in spec (not always possible) */
519 if (n < (128*freq/1500))
520 pr_warn("Calculated ACR N value is too small. You may experience audio problems.\n");
521 if (n > (128*freq/300))
522 pr_warn("Calculated ACR N value is too large. You may experience audio problems.\n");
523
524 *N = n;
525 *CTS = cts;
526
527 DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n",
528 *N, *CTS, freq);
529}
530
531static const struct radeon_hdmi_acr *radeon_audio_acr(unsigned int clock)
532{
533 static struct radeon_hdmi_acr res;
534 u8 i;
535
536 static const struct radeon_hdmi_acr hdmi_predefined_acr[] = {
537 /* 32kHz 44.1kHz 48kHz */
538 /* Clock N CTS N CTS N CTS */
539 { 25175, 4096, 25175, 28224, 125875, 6144, 25175 }, /* 25,20/1.001 MHz */
540 { 25200, 4096, 25200, 6272, 28000, 6144, .clock: 25200 }, /* 25.20 MHz */
541 { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */
542 { 27027, 4096, 27027, 6272, 30030, 6144, .clock: 27027 }, /* 27.00*1.001 MHz */
543 { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */
544 { 54054, 4096, 54054, 6272, 60060, 6144, .clock: 54054 }, /* 54.00*1.001 MHz */
545 { 74176, 4096, 74176, 5733, 75335, 6144, 74176 }, /* 74.25/1.001 MHz */
546 { 74250, 4096, 74250, 6272, 82500, 6144, .clock: 74250 }, /* 74.25 MHz */
547 { 148352, 4096, 148352, 5733, 150670, 6144, 148352 }, /* 148.50/1.001 MHz */
548 { 148500, 4096, 148500, 6272, 165000, 6144, .clock: 148500 }, /* 148.50 MHz */
549 };
550
551 /* Precalculated values for common clocks */
552 for (i = 0; i < ARRAY_SIZE(hdmi_predefined_acr); i++)
553 if (hdmi_predefined_acr[i].clock == clock)
554 return &hdmi_predefined_acr[i];
555
556 /* And odd clocks get manually calculated */
557 radeon_audio_calc_cts(clock, CTS: &res.cts_32khz, N: &res.n_32khz, freq: 32000);
558 radeon_audio_calc_cts(clock, CTS: &res.cts_44_1khz, N: &res.n_44_1khz, freq: 44100);
559 radeon_audio_calc_cts(clock, CTS: &res.cts_48khz, N: &res.n_48khz, freq: 48000);
560
561 return &res;
562}
563
564/*
565 * update the N and CTS parameters for a given pixel clock rate
566 */
567static void radeon_audio_update_acr(struct drm_encoder *encoder, unsigned int clock)
568{
569 const struct radeon_hdmi_acr *acr = radeon_audio_acr(clock);
570 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
571 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
572
573 if (!dig || !dig->afmt)
574 return;
575
576 if (radeon_encoder->audio && radeon_encoder->audio->update_acr)
577 radeon_encoder->audio->update_acr(encoder, dig->afmt->offset, acr);
578}
579
580static void radeon_audio_set_vbi_packet(struct drm_encoder *encoder)
581{
582 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
583 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
584
585 if (!dig || !dig->afmt)
586 return;
587
588 if (radeon_encoder->audio && radeon_encoder->audio->set_vbi_packet)
589 radeon_encoder->audio->set_vbi_packet(encoder, dig->afmt->offset);
590}
591
592static void radeon_hdmi_set_color_depth(struct drm_encoder *encoder)
593{
594 int bpc = 8;
595 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
596 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
597
598 if (!dig || !dig->afmt)
599 return;
600
601 if (encoder->crtc) {
602 struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
603 bpc = radeon_crtc->bpc;
604 }
605
606 if (radeon_encoder->audio && radeon_encoder->audio->set_color_depth)
607 radeon_encoder->audio->set_color_depth(encoder, dig->afmt->offset, bpc);
608}
609
610static void radeon_audio_set_audio_packet(struct drm_encoder *encoder)
611{
612 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
613 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
614
615 if (!dig || !dig->afmt)
616 return;
617
618 if (radeon_encoder->audio && radeon_encoder->audio->set_audio_packet)
619 radeon_encoder->audio->set_audio_packet(encoder, dig->afmt->offset);
620}
621
622static void radeon_audio_set_mute(struct drm_encoder *encoder, bool mute)
623{
624 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
625 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
626
627 if (!dig || !dig->afmt)
628 return;
629
630 if (radeon_encoder->audio && radeon_encoder->audio->set_mute)
631 radeon_encoder->audio->set_mute(encoder, dig->afmt->offset, mute);
632}
633
634/*
635 * update the info frames with the data from the current display mode
636 */
637static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
638 struct drm_display_mode *mode)
639{
640 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
641 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
642 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
643
644 if (!dig || !dig->afmt)
645 return;
646
647 if (!connector)
648 return;
649
650 if (connector->display_info.has_audio) {
651 radeon_audio_set_mute(encoder, mute: true);
652
653 radeon_audio_write_speaker_allocation(encoder);
654 radeon_audio_write_sad_regs(encoder);
655 radeon_audio_write_latency_fields(encoder, mode);
656 radeon_audio_set_dto(encoder, clock: mode->clock);
657 radeon_audio_set_vbi_packet(encoder);
658 radeon_hdmi_set_color_depth(encoder);
659 radeon_audio_update_acr(encoder, clock: mode->clock);
660 radeon_audio_set_audio_packet(encoder);
661 radeon_audio_select_pin(encoder);
662
663 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
664 return;
665
666 radeon_audio_set_mute(encoder, mute: false);
667 } else {
668 radeon_hdmi_set_color_depth(encoder);
669
670 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
671 return;
672 }
673}
674
675static void radeon_audio_dp_mode_set(struct drm_encoder *encoder,
676 struct drm_display_mode *mode)
677{
678 struct drm_device *dev = encoder->dev;
679 struct radeon_device *rdev = dev->dev_private;
680 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
681 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
682 struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
683
684 if (!dig || !dig->afmt)
685 return;
686
687 if (!connector)
688 return;
689
690 if (connector->display_info.has_audio) {
691 radeon_audio_write_speaker_allocation(encoder);
692 radeon_audio_write_sad_regs(encoder);
693 radeon_audio_write_latency_fields(encoder, mode);
694 radeon_audio_set_dto(encoder, clock: rdev->clock.vco_freq * 10);
695 radeon_audio_set_audio_packet(encoder);
696 radeon_audio_select_pin(encoder);
697
698 if (radeon_audio_set_avi_packet(encoder, mode) < 0)
699 return;
700 }
701}
702
703void radeon_audio_mode_set(struct drm_encoder *encoder,
704 struct drm_display_mode *mode)
705{
706 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
707
708 if (radeon_encoder->audio && radeon_encoder->audio->mode_set)
709 radeon_encoder->audio->mode_set(encoder, mode);
710}
711
712void radeon_audio_dpms(struct drm_encoder *encoder, int mode)
713{
714 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
715
716 if (radeon_encoder->audio && radeon_encoder->audio->dpms)
717 radeon_encoder->audio->dpms(encoder, mode == DRM_MODE_DPMS_ON);
718}
719
720unsigned int radeon_audio_decode_dfs_div(unsigned int div)
721{
722 if (div >= 8 && div < 64)
723 return (div - 8) * 25 + 200;
724 else if (div >= 64 && div < 96)
725 return (div - 64) * 50 + 1600;
726 else if (div >= 96 && div < 128)
727 return (div - 96) * 100 + 3200;
728 else
729 return 0;
730}
731
732/*
733 * Audio component support
734 */
735static void radeon_audio_component_notify(struct radeon_device *rdev, int port)
736{
737 struct drm_audio_component *acomp;
738
739 mutex_lock(&rdev->audio.component_mutex);
740 acomp = rdev->audio.component;
741 if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
742 acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,
743 port, -1);
744 mutex_unlock(lock: &rdev->audio.component_mutex);
745}
746
747static int radeon_audio_component_get_eld(struct device *kdev, int port,
748 int pipe, bool *enabled,
749 unsigned char *buf, int max_bytes)
750{
751 struct drm_device *dev = dev_get_drvdata(dev: kdev);
752 struct radeon_device *rdev = dev->dev_private;
753 struct drm_encoder *encoder;
754 struct radeon_encoder *radeon_encoder;
755 struct radeon_encoder_atom_dig *dig;
756 struct drm_connector *connector;
757 int ret = 0;
758
759 *enabled = false;
760 if (!rdev->audio.enabled || !rdev->mode_info.mode_config_initialized)
761 return 0;
762
763 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
764 const struct drm_connector_helper_funcs *connector_funcs =
765 connector->helper_private;
766 encoder = connector_funcs->best_encoder(connector);
767
768 if (!encoder)
769 continue;
770
771 if (!radeon_encoder_is_digital(encoder))
772 continue;
773 radeon_encoder = to_radeon_encoder(encoder);
774 dig = radeon_encoder->enc_priv;
775 if (!dig->pin || dig->pin->id != port)
776 continue;
777 *enabled = true;
778 mutex_lock(&connector->eld_mutex);
779 ret = drm_eld_size(eld: connector->eld);
780 memcpy(buf, connector->eld, min(max_bytes, ret));
781 mutex_unlock(lock: &connector->eld_mutex);
782 break;
783 }
784
785 return ret;
786}
787
788static const struct drm_audio_component_ops radeon_audio_component_ops = {
789 .get_eld = radeon_audio_component_get_eld,
790};
791
792static int radeon_audio_component_bind(struct device *kdev,
793 struct device *hda_kdev, void *data)
794{
795 struct drm_device *dev = dev_get_drvdata(dev: kdev);
796 struct radeon_device *rdev = dev->dev_private;
797 struct drm_audio_component *acomp = data;
798
799 if (WARN_ON(!device_link_add(hda_kdev, kdev, DL_FLAG_STATELESS)))
800 return -ENOMEM;
801
802 mutex_lock(&rdev->audio.component_mutex);
803 acomp->ops = &radeon_audio_component_ops;
804 acomp->dev = kdev;
805 rdev->audio.component = acomp;
806 mutex_unlock(lock: &rdev->audio.component_mutex);
807
808 return 0;
809}
810
811static void radeon_audio_component_unbind(struct device *kdev,
812 struct device *hda_kdev, void *data)
813{
814 struct drm_device *dev = dev_get_drvdata(dev: kdev);
815 struct radeon_device *rdev = dev->dev_private;
816 struct drm_audio_component *acomp = data;
817
818 device_link_remove(consumer: hda_kdev, supplier: kdev);
819
820 mutex_lock(&rdev->audio.component_mutex);
821 rdev->audio.component = NULL;
822 acomp->ops = NULL;
823 acomp->dev = NULL;
824 mutex_unlock(lock: &rdev->audio.component_mutex);
825}
826
827static const struct component_ops radeon_audio_component_bind_ops = {
828 .bind = radeon_audio_component_bind,
829 .unbind = radeon_audio_component_unbind,
830};
831
832void radeon_audio_component_init(struct radeon_device *rdev)
833{
834 if (rdev->audio.component_registered ||
835 !radeon_audio || !radeon_audio_chipset_supported(rdev))
836 return;
837
838 if (!component_add(rdev->dev, &radeon_audio_component_bind_ops))
839 rdev->audio.component_registered = true;
840}
841
842void radeon_audio_component_fini(struct radeon_device *rdev)
843{
844 if (rdev->audio.component_registered) {
845 component_del(rdev->dev, &radeon_audio_component_bind_ops);
846 rdev->audio.component_registered = false;
847 }
848}
849

source code of linux/drivers/gpu/drm/radeon/radeon_audio.c