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7#include <linux/module.h>
8#include <linux/string.h>
9#include <sound/core.h>
10#include <sound/pcm.h>
11#include <sound/pcm_params.h>
12#include <sound/soc.h>
13#include <sound/tlv.h>
14#include <sound/pcm_drm_eld.h>
15#include <sound/hdmi-codec.h>
16#include <sound/pcm_iec958.h>
17
18#include <drm/drm_crtc.h>
19
20#define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
21
22struct hdmi_codec_channel_map_table {
23 unsigned char map;
24 unsigned long spk_mask;
25};
26
27
28
29
30
31
32
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35
36
37
38enum hdmi_codec_cea_spk_placement {
39 FL = BIT(0),
40 FC = BIT(1),
41 FR = BIT(2),
42 FLC = BIT(3),
43 FRC = BIT(4),
44 RL = BIT(5),
45 RC = BIT(6),
46 RR = BIT(7),
47 RLC = BIT(8),
48 RRC = BIT(9),
49 LFE = BIT(10),
50};
51
52
53
54
55struct hdmi_codec_cea_spk_alloc {
56 const int ca_id;
57 unsigned int n_ch;
58 unsigned long mask;
59};
60
61
62static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
63 { .channels = 2,
64 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
65 { }
66};
67
68
69static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
70 { .channels = 2,
71 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
72 { .channels = 4,
73 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
74 SNDRV_CHMAP_NA } },
75 { .channels = 4,
76 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
77 SNDRV_CHMAP_FC } },
78 { .channels = 4,
79 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
80 SNDRV_CHMAP_FC } },
81 { .channels = 6,
82 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
83 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
84 { .channels = 6,
85 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
86 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
87 { .channels = 6,
88 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
89 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
90 { .channels = 6,
91 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
92 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
93 { .channels = 6,
94 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
95 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
96 { .channels = 6,
97 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
98 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
99 { .channels = 6,
100 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
101 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
102 { .channels = 6,
103 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
104 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
105 { .channels = 8,
106 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
107 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
108 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
109 { .channels = 8,
110 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
111 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
112 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
113 { .channels = 8,
114 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
115 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
116 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
117 { .channels = 8,
118 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
119 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
120 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
121 { .channels = 8,
122 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
123 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
124 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
125 { .channels = 8,
126 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
127 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
128 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
129 { .channels = 8,
130 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
131 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
132 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
133 { .channels = 8,
134 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
135 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
136 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
137 { .channels = 8,
138 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
139 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
140 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
141 { .channels = 8,
142 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
143 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
144 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
145 { .channels = 8,
146 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
147 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
148 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
149 { .channels = 8,
150 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
151 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
152 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
153 { .channels = 8,
154 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
155 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
156 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
157 { .channels = 8,
158 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
159 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
160 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
161 { .channels = 8,
162 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
163 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
164 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
165 { .channels = 8,
166 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
167 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
168 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
169 { .channels = 8,
170 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
171 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
172 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
173 { .channels = 8,
174 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
175 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
176 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
177 { .channels = 8,
178 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
179 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
180 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
181 { .channels = 8,
182 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
183 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
184 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
185 { }
186};
187
188
189
190
191
192
193
194
195static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
196 { .ca_id = 0x00, .n_ch = 2,
197 .mask = FL | FR},
198
199 { .ca_id = 0x01, .n_ch = 4,
200 .mask = FL | FR | LFE},
201
202 { .ca_id = 0x02, .n_ch = 4,
203 .mask = FL | FR | FC },
204
205 { .ca_id = 0x0b, .n_ch = 6,
206 .mask = FL | FR | LFE | FC | RL | RR},
207
208 { .ca_id = 0x08, .n_ch = 6,
209 .mask = FL | FR | RL | RR },
210
211 { .ca_id = 0x09, .n_ch = 6,
212 .mask = FL | FR | LFE | RL | RR },
213
214 { .ca_id = 0x0a, .n_ch = 6,
215 .mask = FL | FR | FC | RL | RR },
216
217 { .ca_id = 0x0f, .n_ch = 8,
218 .mask = FL | FR | LFE | FC | RL | RR | RC },
219
220 { .ca_id = 0x13, .n_ch = 8,
221 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
222
223 { .ca_id = 0x03, .n_ch = 8,
224 .mask = FL | FR | LFE | FC },
225 { .ca_id = 0x04, .n_ch = 8,
226 .mask = FL | FR | RC},
227 { .ca_id = 0x05, .n_ch = 8,
228 .mask = FL | FR | LFE | RC },
229 { .ca_id = 0x06, .n_ch = 8,
230 .mask = FL | FR | FC | RC },
231 { .ca_id = 0x07, .n_ch = 8,
232 .mask = FL | FR | LFE | FC | RC },
233 { .ca_id = 0x0c, .n_ch = 8,
234 .mask = FL | FR | RC | RL | RR },
235 { .ca_id = 0x0d, .n_ch = 8,
236 .mask = FL | FR | LFE | RL | RR | RC },
237 { .ca_id = 0x0e, .n_ch = 8,
238 .mask = FL | FR | FC | RL | RR | RC },
239 { .ca_id = 0x10, .n_ch = 8,
240 .mask = FL | FR | RL | RR | RLC | RRC },
241 { .ca_id = 0x11, .n_ch = 8,
242 .mask = FL | FR | LFE | RL | RR | RLC | RRC },
243 { .ca_id = 0x12, .n_ch = 8,
244 .mask = FL | FR | FC | RL | RR | RLC | RRC },
245 { .ca_id = 0x14, .n_ch = 8,
246 .mask = FL | FR | FLC | FRC },
247 { .ca_id = 0x15, .n_ch = 8,
248 .mask = FL | FR | LFE | FLC | FRC },
249 { .ca_id = 0x16, .n_ch = 8,
250 .mask = FL | FR | FC | FLC | FRC },
251 { .ca_id = 0x17, .n_ch = 8,
252 .mask = FL | FR | LFE | FC | FLC | FRC },
253 { .ca_id = 0x18, .n_ch = 8,
254 .mask = FL | FR | RC | FLC | FRC },
255 { .ca_id = 0x19, .n_ch = 8,
256 .mask = FL | FR | LFE | RC | FLC | FRC },
257 { .ca_id = 0x1a, .n_ch = 8,
258 .mask = FL | FR | RC | FC | FLC | FRC },
259 { .ca_id = 0x1b, .n_ch = 8,
260 .mask = FL | FR | LFE | RC | FC | FLC | FRC },
261 { .ca_id = 0x1c, .n_ch = 8,
262 .mask = FL | FR | RL | RR | FLC | FRC },
263 { .ca_id = 0x1d, .n_ch = 8,
264 .mask = FL | FR | LFE | RL | RR | FLC | FRC },
265 { .ca_id = 0x1e, .n_ch = 8,
266 .mask = FL | FR | FC | RL | RR | FLC | FRC },
267 { .ca_id = 0x1f, .n_ch = 8,
268 .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
269};
270
271struct hdmi_codec_priv {
272 struct hdmi_codec_pdata hcd;
273 struct snd_soc_dai_driver *daidrv;
274 struct hdmi_codec_daifmt daifmt[2];
275 struct mutex current_stream_lock;
276 struct snd_pcm_substream *current_stream;
277 uint8_t eld[MAX_ELD_BYTES];
278 struct snd_pcm_chmap *chmap_info;
279 unsigned int chmap_idx;
280};
281
282static const struct snd_soc_dapm_widget hdmi_widgets[] = {
283 SND_SOC_DAPM_OUTPUT("TX"),
284};
285
286enum {
287 DAI_ID_I2S = 0,
288 DAI_ID_SPDIF,
289};
290
291static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
292 struct snd_ctl_elem_info *uinfo)
293{
294 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
295 uinfo->count = FIELD_SIZEOF(struct hdmi_codec_priv, eld);
296
297 return 0;
298}
299
300static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
301 struct snd_ctl_elem_value *ucontrol)
302{
303 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
304 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
305
306 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
307
308 return 0;
309}
310
311static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
312{
313 int i;
314 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
315 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
316 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
317 };
318 unsigned long spk_mask = 0;
319
320 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
321 if (spk_alloc & (1 << i))
322 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
323 }
324
325 return spk_mask;
326}
327
328static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
329{
330 u8 spk_alloc;
331 unsigned long spk_mask;
332
333 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
334 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
335
336
337 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
338 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
339 else
340 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
341}
342
343static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
344 unsigned char channels)
345{
346 int i;
347 u8 spk_alloc;
348 unsigned long spk_mask;
349 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
350
351 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
352 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
353
354 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
355
356 if (!spk_alloc && cap->ca_id == 0)
357 return i;
358 if (cap->n_ch != channels)
359 continue;
360 if (!(cap->mask == (spk_mask & cap->mask)))
361 continue;
362 return i;
363 }
364
365 return -EINVAL;
366}
367static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
368 struct snd_ctl_elem_value *ucontrol)
369{
370 unsigned const char *map;
371 unsigned int i;
372 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
373 struct hdmi_codec_priv *hcp = info->private_data;
374
375 map = info->chmap[hcp->chmap_idx].map;
376
377 for (i = 0; i < info->max_channels; i++) {
378 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
379 ucontrol->value.integer.value[i] = 0;
380 else
381 ucontrol->value.integer.value[i] = map[i];
382 }
383
384 return 0;
385}
386
387static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
388 struct snd_soc_dai *dai)
389{
390 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
391 int ret = 0;
392
393 mutex_lock(&hcp->current_stream_lock);
394 if (!hcp->current_stream) {
395 hcp->current_stream = substream;
396 } else if (hcp->current_stream != substream) {
397 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
398 ret = -EINVAL;
399 }
400 mutex_unlock(&hcp->current_stream_lock);
401
402 return ret;
403}
404
405static int hdmi_codec_startup(struct snd_pcm_substream *substream,
406 struct snd_soc_dai *dai)
407{
408 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
409 int ret = 0;
410
411 dev_dbg(dai->dev, "%s()\n", __func__);
412
413 ret = hdmi_codec_new_stream(substream, dai);
414 if (ret)
415 return ret;
416
417 if (hcp->hcd.ops->audio_startup) {
418 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
419 if (ret) {
420 mutex_lock(&hcp->current_stream_lock);
421 hcp->current_stream = NULL;
422 mutex_unlock(&hcp->current_stream_lock);
423 return ret;
424 }
425 }
426
427 if (hcp->hcd.ops->get_eld) {
428 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
429 hcp->eld, sizeof(hcp->eld));
430
431 if (!ret) {
432 ret = snd_pcm_hw_constraint_eld(substream->runtime,
433 hcp->eld);
434 if (ret) {
435 mutex_lock(&hcp->current_stream_lock);
436 hcp->current_stream = NULL;
437 mutex_unlock(&hcp->current_stream_lock);
438 return ret;
439 }
440 }
441
442 hdmi_codec_eld_chmap(hcp);
443 }
444 return 0;
445}
446
447static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
448 struct snd_soc_dai *dai)
449{
450 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
451
452 dev_dbg(dai->dev, "%s()\n", __func__);
453
454 WARN_ON(hcp->current_stream != substream);
455
456 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
457 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
458
459 mutex_lock(&hcp->current_stream_lock);
460 hcp->current_stream = NULL;
461 mutex_unlock(&hcp->current_stream_lock);
462}
463
464static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
465 struct snd_pcm_hw_params *params,
466 struct snd_soc_dai *dai)
467{
468 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
469 struct hdmi_codec_params hp = {
470 .iec = {
471 .status = { 0 },
472 .subcode = { 0 },
473 .pad = 0,
474 .dig_subframe = { 0 },
475 }
476 };
477 int ret, idx;
478
479 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
480 params_width(params), params_rate(params),
481 params_channels(params));
482
483 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
484 sizeof(hp.iec.status));
485 if (ret < 0) {
486 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
487 ret);
488 return ret;
489 }
490
491 hdmi_audio_infoframe_init(&hp.cea);
492 hp.cea.channels = params_channels(params);
493 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
494 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
495 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
496
497
498 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
499 if (idx < 0) {
500 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
501 idx);
502 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
503 return idx;
504 }
505 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
506 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
507
508 hp.sample_width = params_width(params);
509 hp.sample_rate = params_rate(params);
510 hp.channels = params_channels(params);
511
512 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
513 &hcp->daifmt[dai->id], &hp);
514}
515
516static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
517 unsigned int fmt)
518{
519 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
520 struct hdmi_codec_daifmt cf = { 0 };
521
522 dev_dbg(dai->dev, "%s()\n", __func__);
523
524 if (dai->id == DAI_ID_SPDIF)
525 return 0;
526
527 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
528 case SND_SOC_DAIFMT_CBM_CFM:
529 cf.bit_clk_master = 1;
530 cf.frame_clk_master = 1;
531 break;
532 case SND_SOC_DAIFMT_CBS_CFM:
533 cf.frame_clk_master = 1;
534 break;
535 case SND_SOC_DAIFMT_CBM_CFS:
536 cf.bit_clk_master = 1;
537 break;
538 case SND_SOC_DAIFMT_CBS_CFS:
539 break;
540 default:
541 return -EINVAL;
542 }
543
544 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
545 case SND_SOC_DAIFMT_NB_NF:
546 break;
547 case SND_SOC_DAIFMT_NB_IF:
548 cf.frame_clk_inv = 1;
549 break;
550 case SND_SOC_DAIFMT_IB_NF:
551 cf.bit_clk_inv = 1;
552 break;
553 case SND_SOC_DAIFMT_IB_IF:
554 cf.frame_clk_inv = 1;
555 cf.bit_clk_inv = 1;
556 break;
557 }
558
559 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
560 case SND_SOC_DAIFMT_I2S:
561 cf.fmt = HDMI_I2S;
562 break;
563 case SND_SOC_DAIFMT_DSP_A:
564 cf.fmt = HDMI_DSP_A;
565 break;
566 case SND_SOC_DAIFMT_DSP_B:
567 cf.fmt = HDMI_DSP_B;
568 break;
569 case SND_SOC_DAIFMT_RIGHT_J:
570 cf.fmt = HDMI_RIGHT_J;
571 break;
572 case SND_SOC_DAIFMT_LEFT_J:
573 cf.fmt = HDMI_LEFT_J;
574 break;
575 case SND_SOC_DAIFMT_AC97:
576 cf.fmt = HDMI_AC97;
577 break;
578 default:
579 dev_err(dai->dev, "Invalid DAI interface format\n");
580 return -EINVAL;
581 }
582
583 hcp->daifmt[dai->id] = cf;
584
585 return 0;
586}
587
588static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
589{
590 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
591
592 dev_dbg(dai->dev, "%s()\n", __func__);
593
594 if (hcp->hcd.ops->digital_mute)
595 return hcp->hcd.ops->digital_mute(dai->dev->parent,
596 hcp->hcd.data, mute);
597
598 return 0;
599}
600
601static const struct snd_soc_dai_ops hdmi_dai_ops = {
602 .startup = hdmi_codec_startup,
603 .shutdown = hdmi_codec_shutdown,
604 .hw_params = hdmi_codec_hw_params,
605 .set_fmt = hdmi_codec_set_fmt,
606 .digital_mute = hdmi_codec_digital_mute,
607};
608
609
610#define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
611 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
612 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
613 SNDRV_PCM_RATE_192000)
614
615#define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
616 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
617 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
618 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
619
620
621
622
623
624
625
626
627
628#define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
629 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
630 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
631 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
632 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
633
634static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
635 struct snd_soc_dai *dai)
636{
637 struct snd_soc_dai_driver *drv = dai->driver;
638 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
639 struct snd_kcontrol *kctl;
640 struct snd_kcontrol_new hdmi_eld_ctl = {
641 .access = SNDRV_CTL_ELEM_ACCESS_READ |
642 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
643 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
644 .name = "ELD",
645 .info = hdmi_eld_ctl_info,
646 .get = hdmi_eld_ctl_get,
647 .device = rtd->pcm->device,
648 };
649 int ret;
650
651 dev_dbg(dai->dev, "%s()\n", __func__);
652
653 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
654 NULL, drv->playback.channels_max, 0,
655 &hcp->chmap_info);
656 if (ret < 0)
657 return ret;
658
659
660 hcp->chmap_info->private_data = hcp;
661 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
662
663
664 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
665 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
666
667
668 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
669 if (!kctl)
670 return -ENOMEM;
671
672 return snd_ctl_add(rtd->card->snd_card, kctl);
673}
674
675static int hdmi_dai_probe(struct snd_soc_dai *dai)
676{
677 struct snd_soc_dapm_context *dapm;
678 struct snd_soc_dapm_route route = {
679 .sink = "TX",
680 .source = dai->driver->playback.stream_name,
681 };
682
683 dapm = snd_soc_component_get_dapm(dai->component);
684
685 return snd_soc_dapm_add_routes(dapm, &route, 1);
686}
687
688static const struct snd_soc_dai_driver hdmi_i2s_dai = {
689 .name = "i2s-hifi",
690 .id = DAI_ID_I2S,
691 .probe = hdmi_dai_probe,
692 .playback = {
693 .stream_name = "I2S Playback",
694 .channels_min = 2,
695 .channels_max = 8,
696 .rates = HDMI_RATES,
697 .formats = I2S_FORMATS,
698 .sig_bits = 24,
699 },
700 .ops = &hdmi_dai_ops,
701 .pcm_new = hdmi_codec_pcm_new,
702};
703
704static const struct snd_soc_dai_driver hdmi_spdif_dai = {
705 .name = "spdif-hifi",
706 .id = DAI_ID_SPDIF,
707 .probe = hdmi_dai_probe,
708 .playback = {
709 .stream_name = "SPDIF Playback",
710 .channels_min = 2,
711 .channels_max = 2,
712 .rates = HDMI_RATES,
713 .formats = SPDIF_FORMATS,
714 },
715 .ops = &hdmi_dai_ops,
716 .pcm_new = hdmi_codec_pcm_new,
717};
718
719static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
720 struct device_node *endpoint)
721{
722 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
723 int ret = -ENOTSUPP;
724
725 if (hcp->hcd.ops->get_dai_id)
726 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
727
728 return ret;
729}
730
731static const struct snd_soc_component_driver hdmi_driver = {
732 .dapm_widgets = hdmi_widgets,
733 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
734 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
735 .idle_bias_on = 1,
736 .use_pmdown_time = 1,
737 .endianness = 1,
738 .non_legacy_dai_naming = 1,
739};
740
741static int hdmi_codec_probe(struct platform_device *pdev)
742{
743 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
744 struct device *dev = &pdev->dev;
745 struct hdmi_codec_priv *hcp;
746 int dai_count, i = 0;
747 int ret;
748
749 dev_dbg(dev, "%s()\n", __func__);
750
751 if (!hcd) {
752 dev_err(dev, "%s: No platform data\n", __func__);
753 return -EINVAL;
754 }
755
756 dai_count = hcd->i2s + hcd->spdif;
757 if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
758 !hcd->ops->audio_shutdown) {
759 dev_err(dev, "%s: Invalid parameters\n", __func__);
760 return -EINVAL;
761 }
762
763 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
764 if (!hcp)
765 return -ENOMEM;
766
767 hcp->hcd = *hcd;
768 mutex_init(&hcp->current_stream_lock);
769
770 hcp->daidrv = devm_kcalloc(dev, dai_count, sizeof(*hcp->daidrv),
771 GFP_KERNEL);
772 if (!hcp->daidrv)
773 return -ENOMEM;
774
775 if (hcd->i2s) {
776 hcp->daidrv[i] = hdmi_i2s_dai;
777 hcp->daidrv[i].playback.channels_max =
778 hcd->max_i2s_channels;
779 i++;
780 }
781
782 if (hcd->spdif) {
783 hcp->daidrv[i] = hdmi_spdif_dai;
784 hcp->daifmt[DAI_ID_SPDIF].fmt = HDMI_SPDIF;
785 }
786
787 dev_set_drvdata(dev, hcp);
788
789 ret = devm_snd_soc_register_component(dev, &hdmi_driver, hcp->daidrv,
790 dai_count);
791 if (ret) {
792 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
793 __func__, ret);
794 return ret;
795 }
796 return 0;
797}
798
799static struct platform_driver hdmi_codec_driver = {
800 .driver = {
801 .name = HDMI_CODEC_DRV_NAME,
802 },
803 .probe = hdmi_codec_probe,
804};
805
806module_platform_driver(hdmi_codec_driver);
807
808MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
809MODULE_DESCRIPTION("HDMI Audio Codec Driver");
810MODULE_LICENSE("GPL");
811MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
812