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15#include <linux/module.h>
16#include <linux/string.h>
17#include <sound/core.h>
18#include <sound/pcm.h>
19#include <sound/pcm_params.h>
20#include <sound/soc.h>
21#include <sound/tlv.h>
22#include <sound/pcm_drm_eld.h>
23#include <sound/hdmi-codec.h>
24#include <sound/pcm_iec958.h>
25
26#include <drm/drm_crtc.h>
27
28#define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
29
30struct hdmi_codec_channel_map_table {
31 unsigned char map;
32 unsigned long spk_mask;
33};
34
35
36
37
38
39
40
41
42
43
44
45
46enum hdmi_codec_cea_spk_placement {
47 FL = BIT(0),
48 FC = BIT(1),
49 FR = BIT(2),
50 FLC = BIT(3),
51 FRC = BIT(4),
52 RL = BIT(5),
53 RC = BIT(6),
54 RR = BIT(7),
55 RLC = BIT(8),
56 RRC = BIT(9),
57 LFE = BIT(10),
58};
59
60
61
62
63struct hdmi_codec_cea_spk_alloc {
64 const int ca_id;
65 unsigned int n_ch;
66 unsigned long mask;
67};
68
69
70static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
71 { .channels = 2,
72 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
73 { }
74};
75
76
77static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
78 { .channels = 2,
79 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
80 { .channels = 4,
81 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
82 SNDRV_CHMAP_NA } },
83 { .channels = 4,
84 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
85 SNDRV_CHMAP_FC } },
86 { .channels = 4,
87 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
88 SNDRV_CHMAP_FC } },
89 { .channels = 6,
90 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
91 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
92 { .channels = 6,
93 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
94 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
95 { .channels = 6,
96 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
97 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
98 { .channels = 6,
99 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
100 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
101 { .channels = 6,
102 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
103 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
104 { .channels = 6,
105 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
106 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
107 { .channels = 6,
108 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
109 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
110 { .channels = 6,
111 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
112 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
113 { .channels = 8,
114 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
115 SNDRV_CHMAP_NA, 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_NA, 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_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
124 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
125 { .channels = 8,
126 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
127 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
128 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
129 { .channels = 8,
130 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
131 SNDRV_CHMAP_NA, 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_NA, 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_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
140 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
141 { .channels = 8,
142 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
143 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
144 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
145 { .channels = 8,
146 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
147 SNDRV_CHMAP_NA, 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_NA, 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_FC, 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_FC, 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_NA, 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_NA, 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_FC, 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_FC, 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_NA, 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_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
184 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
185 { .channels = 8,
186 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
187 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
188 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
189 { .channels = 8,
190 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
191 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
192 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
193 { }
194};
195
196
197
198
199
200
201
202
203static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
204 { .ca_id = 0x00, .n_ch = 2,
205 .mask = FL | FR},
206
207 { .ca_id = 0x01, .n_ch = 4,
208 .mask = FL | FR | LFE},
209
210 { .ca_id = 0x02, .n_ch = 4,
211 .mask = FL | FR | FC },
212
213 { .ca_id = 0x0b, .n_ch = 6,
214 .mask = FL | FR | LFE | FC | RL | RR},
215
216 { .ca_id = 0x08, .n_ch = 6,
217 .mask = FL | FR | RL | RR },
218
219 { .ca_id = 0x09, .n_ch = 6,
220 .mask = FL | FR | LFE | RL | RR },
221
222 { .ca_id = 0x0a, .n_ch = 6,
223 .mask = FL | FR | FC | RL | RR },
224
225 { .ca_id = 0x0f, .n_ch = 8,
226 .mask = FL | FR | LFE | FC | RL | RR | RC },
227
228 { .ca_id = 0x13, .n_ch = 8,
229 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
230
231 { .ca_id = 0x03, .n_ch = 8,
232 .mask = FL | FR | LFE | FC },
233 { .ca_id = 0x04, .n_ch = 8,
234 .mask = FL | FR | RC},
235 { .ca_id = 0x05, .n_ch = 8,
236 .mask = FL | FR | LFE | RC },
237 { .ca_id = 0x06, .n_ch = 8,
238 .mask = FL | FR | FC | RC },
239 { .ca_id = 0x07, .n_ch = 8,
240 .mask = FL | FR | LFE | FC | RC },
241 { .ca_id = 0x0c, .n_ch = 8,
242 .mask = FL | FR | RC | RL | RR },
243 { .ca_id = 0x0d, .n_ch = 8,
244 .mask = FL | FR | LFE | RL | RR | RC },
245 { .ca_id = 0x0e, .n_ch = 8,
246 .mask = FL | FR | FC | RL | RR | RC },
247 { .ca_id = 0x10, .n_ch = 8,
248 .mask = FL | FR | RL | RR | RLC | RRC },
249 { .ca_id = 0x11, .n_ch = 8,
250 .mask = FL | FR | LFE | RL | RR | RLC | RRC },
251 { .ca_id = 0x12, .n_ch = 8,
252 .mask = FL | FR | FC | RL | RR | RLC | RRC },
253 { .ca_id = 0x14, .n_ch = 8,
254 .mask = FL | FR | FLC | FRC },
255 { .ca_id = 0x15, .n_ch = 8,
256 .mask = FL | FR | LFE | FLC | FRC },
257 { .ca_id = 0x16, .n_ch = 8,
258 .mask = FL | FR | FC | FLC | FRC },
259 { .ca_id = 0x17, .n_ch = 8,
260 .mask = FL | FR | LFE | FC | FLC | FRC },
261 { .ca_id = 0x18, .n_ch = 8,
262 .mask = FL | FR | RC | FLC | FRC },
263 { .ca_id = 0x19, .n_ch = 8,
264 .mask = FL | FR | LFE | RC | FLC | FRC },
265 { .ca_id = 0x1a, .n_ch = 8,
266 .mask = FL | FR | RC | FC | FLC | FRC },
267 { .ca_id = 0x1b, .n_ch = 8,
268 .mask = FL | FR | LFE | RC | FC | FLC | FRC },
269 { .ca_id = 0x1c, .n_ch = 8,
270 .mask = FL | FR | RL | RR | FLC | FRC },
271 { .ca_id = 0x1d, .n_ch = 8,
272 .mask = FL | FR | LFE | RL | RR | FLC | FRC },
273 { .ca_id = 0x1e, .n_ch = 8,
274 .mask = FL | FR | FC | RL | RR | FLC | FRC },
275 { .ca_id = 0x1f, .n_ch = 8,
276 .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
277};
278
279struct hdmi_codec_priv {
280 struct hdmi_codec_pdata hcd;
281 struct snd_soc_dai_driver *daidrv;
282 struct hdmi_codec_daifmt daifmt[2];
283 struct mutex current_stream_lock;
284 struct snd_pcm_substream *current_stream;
285 uint8_t eld[MAX_ELD_BYTES];
286 struct snd_pcm_chmap *chmap_info;
287 unsigned int chmap_idx;
288};
289
290static const struct snd_soc_dapm_widget hdmi_widgets[] = {
291 SND_SOC_DAPM_OUTPUT("TX"),
292};
293
294static const struct snd_soc_dapm_route hdmi_routes[] = {
295 { "TX", NULL, "Playback" },
296};
297
298enum {
299 DAI_ID_I2S = 0,
300 DAI_ID_SPDIF,
301};
302
303static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
304 struct snd_ctl_elem_info *uinfo)
305{
306 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
307 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
308
309 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
310 uinfo->count = sizeof(hcp->eld);
311
312 return 0;
313}
314
315static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
316 struct snd_ctl_elem_value *ucontrol)
317{
318 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
319 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
320
321 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
322
323 return 0;
324}
325
326static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
327{
328 int i;
329 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
330 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
331 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
332 };
333 unsigned long spk_mask = 0;
334
335 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
336 if (spk_alloc & (1 << i))
337 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
338 }
339
340 return spk_mask;
341}
342
343static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
344{
345 u8 spk_alloc;
346 unsigned long spk_mask;
347
348 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
349 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
350
351
352 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
353 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
354 else
355 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
356}
357
358static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
359 unsigned char channels)
360{
361 int i;
362 u8 spk_alloc;
363 unsigned long spk_mask;
364 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
365
366 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
367 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
368
369 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
370
371 if (!spk_alloc && cap->ca_id == 0)
372 return i;
373 if (cap->n_ch != channels)
374 continue;
375 if (!(cap->mask == (spk_mask & cap->mask)))
376 continue;
377 return i;
378 }
379
380 return -EINVAL;
381}
382static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
383 struct snd_ctl_elem_value *ucontrol)
384{
385 unsigned const char *map;
386 unsigned int i;
387 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
388 struct hdmi_codec_priv *hcp = info->private_data;
389
390 map = info->chmap[hcp->chmap_idx].map;
391
392 for (i = 0; i < info->max_channels; i++) {
393 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
394 ucontrol->value.integer.value[i] = 0;
395 else
396 ucontrol->value.integer.value[i] = map[i];
397 }
398
399 return 0;
400}
401
402static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
403 struct snd_soc_dai *dai)
404{
405 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
406 int ret = 0;
407
408 mutex_lock(&hcp->current_stream_lock);
409 if (!hcp->current_stream) {
410 hcp->current_stream = substream;
411 } else if (hcp->current_stream != substream) {
412 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
413 ret = -EINVAL;
414 }
415 mutex_unlock(&hcp->current_stream_lock);
416
417 return ret;
418}
419
420static int hdmi_codec_startup(struct snd_pcm_substream *substream,
421 struct snd_soc_dai *dai)
422{
423 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
424 int ret = 0;
425
426 dev_dbg(dai->dev, "%s()\n", __func__);
427
428 ret = hdmi_codec_new_stream(substream, dai);
429 if (ret)
430 return ret;
431
432 if (hcp->hcd.ops->audio_startup) {
433 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
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 if (hcp->hcd.ops->get_eld) {
443 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
444 hcp->eld, sizeof(hcp->eld));
445
446 if (!ret) {
447 ret = snd_pcm_hw_constraint_eld(substream->runtime,
448 hcp->eld);
449 if (ret)
450 return ret;
451 }
452
453 hdmi_codec_eld_chmap(hcp);
454 }
455 return 0;
456}
457
458static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
459 struct snd_soc_dai *dai)
460{
461 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
462
463 dev_dbg(dai->dev, "%s()\n", __func__);
464
465 WARN_ON(hcp->current_stream != substream);
466
467 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
468 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
469
470 mutex_lock(&hcp->current_stream_lock);
471 hcp->current_stream = NULL;
472 mutex_unlock(&hcp->current_stream_lock);
473}
474
475static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
476 struct snd_pcm_hw_params *params,
477 struct snd_soc_dai *dai)
478{
479 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
480 struct hdmi_codec_params hp = {
481 .iec = {
482 .status = { 0 },
483 .subcode = { 0 },
484 .pad = 0,
485 .dig_subframe = { 0 },
486 }
487 };
488 int ret, idx;
489
490 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
491 params_width(params), params_rate(params),
492 params_channels(params));
493
494 if (params_width(params) > 24)
495 params->msbits = 24;
496
497 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
498 sizeof(hp.iec.status));
499 if (ret < 0) {
500 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
501 ret);
502 return ret;
503 }
504
505 ret = hdmi_codec_new_stream(substream, dai);
506 if (ret)
507 return ret;
508
509 hdmi_audio_infoframe_init(&hp.cea);
510 hp.cea.channels = params_channels(params);
511 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
512 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
513 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
514
515
516 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
517 if (idx < 0) {
518 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
519 idx);
520 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
521 return idx;
522 }
523 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
524 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
525
526 hp.sample_width = params_width(params);
527 hp.sample_rate = params_rate(params);
528 hp.channels = params_channels(params);
529
530 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
531 &hcp->daifmt[dai->id], &hp);
532}
533
534static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
535 unsigned int fmt)
536{
537 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
538 struct hdmi_codec_daifmt cf = { 0 };
539 int ret = 0;
540
541 dev_dbg(dai->dev, "%s()\n", __func__);
542
543 if (dai->id == DAI_ID_SPDIF) {
544 cf.fmt = HDMI_SPDIF;
545 } else {
546 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
547 case SND_SOC_DAIFMT_CBM_CFM:
548 cf.bit_clk_master = 1;
549 cf.frame_clk_master = 1;
550 break;
551 case SND_SOC_DAIFMT_CBS_CFM:
552 cf.frame_clk_master = 1;
553 break;
554 case SND_SOC_DAIFMT_CBM_CFS:
555 cf.bit_clk_master = 1;
556 break;
557 case SND_SOC_DAIFMT_CBS_CFS:
558 break;
559 default:
560 return -EINVAL;
561 }
562
563 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
564 case SND_SOC_DAIFMT_NB_NF:
565 break;
566 case SND_SOC_DAIFMT_NB_IF:
567 cf.frame_clk_inv = 1;
568 break;
569 case SND_SOC_DAIFMT_IB_NF:
570 cf.bit_clk_inv = 1;
571 break;
572 case SND_SOC_DAIFMT_IB_IF:
573 cf.frame_clk_inv = 1;
574 cf.bit_clk_inv = 1;
575 break;
576 }
577
578 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
579 case SND_SOC_DAIFMT_I2S:
580 cf.fmt = HDMI_I2S;
581 break;
582 case SND_SOC_DAIFMT_DSP_A:
583 cf.fmt = HDMI_DSP_A;
584 break;
585 case SND_SOC_DAIFMT_DSP_B:
586 cf.fmt = HDMI_DSP_B;
587 break;
588 case SND_SOC_DAIFMT_RIGHT_J:
589 cf.fmt = HDMI_RIGHT_J;
590 break;
591 case SND_SOC_DAIFMT_LEFT_J:
592 cf.fmt = HDMI_LEFT_J;
593 break;
594 case SND_SOC_DAIFMT_AC97:
595 cf.fmt = HDMI_AC97;
596 break;
597 default:
598 dev_err(dai->dev, "Invalid DAI interface format\n");
599 return -EINVAL;
600 }
601 }
602
603 hcp->daifmt[dai->id] = cf;
604
605 return ret;
606}
607
608static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
609{
610 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
611
612 dev_dbg(dai->dev, "%s()\n", __func__);
613
614 if (hcp->hcd.ops->digital_mute)
615 return hcp->hcd.ops->digital_mute(dai->dev->parent,
616 hcp->hcd.data, mute);
617
618 return 0;
619}
620
621static const struct snd_soc_dai_ops hdmi_dai_ops = {
622 .startup = hdmi_codec_startup,
623 .shutdown = hdmi_codec_shutdown,
624 .hw_params = hdmi_codec_hw_params,
625 .set_fmt = hdmi_codec_set_fmt,
626 .digital_mute = hdmi_codec_digital_mute,
627};
628
629
630#define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
631 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
632 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
633 SNDRV_PCM_RATE_192000)
634
635#define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
636 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
637 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
638 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
639
640
641
642
643
644
645
646
647
648#define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
649 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
650 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
651 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
652 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
653
654static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
655 struct snd_soc_dai *dai)
656{
657 struct snd_soc_dai_driver *drv = dai->driver;
658 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
659 struct snd_kcontrol *kctl;
660 struct snd_kcontrol_new hdmi_eld_ctl = {
661 .access = SNDRV_CTL_ELEM_ACCESS_READ |
662 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
663 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
664 .name = "ELD",
665 .info = hdmi_eld_ctl_info,
666 .get = hdmi_eld_ctl_get,
667 .device = rtd->pcm->device,
668 };
669 int ret;
670
671 dev_dbg(dai->dev, "%s()\n", __func__);
672
673 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
674 NULL, drv->playback.channels_max, 0,
675 &hcp->chmap_info);
676 if (ret < 0)
677 return ret;
678
679
680 hcp->chmap_info->private_data = hcp;
681 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
682
683
684 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
685 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
686
687
688 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
689 if (!kctl)
690 return -ENOMEM;
691
692 return snd_ctl_add(rtd->card->snd_card, kctl);
693}
694
695static const struct snd_soc_dai_driver hdmi_i2s_dai = {
696 .name = "i2s-hifi",
697 .id = DAI_ID_I2S,
698 .playback = {
699 .stream_name = "I2S Playback",
700 .channels_min = 2,
701 .channels_max = 8,
702 .rates = HDMI_RATES,
703 .formats = I2S_FORMATS,
704 .sig_bits = 24,
705 },
706 .ops = &hdmi_dai_ops,
707 .pcm_new = hdmi_codec_pcm_new,
708};
709
710static const struct snd_soc_dai_driver hdmi_spdif_dai = {
711 .name = "spdif-hifi",
712 .id = DAI_ID_SPDIF,
713 .playback = {
714 .stream_name = "SPDIF Playback",
715 .channels_min = 2,
716 .channels_max = 2,
717 .rates = HDMI_RATES,
718 .formats = SPDIF_FORMATS,
719 },
720 .ops = &hdmi_dai_ops,
721 .pcm_new = hdmi_codec_pcm_new,
722};
723
724static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
725 struct device_node *endpoint)
726{
727 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
728 int ret = -ENOTSUPP;
729
730 if (hcp->hcd.ops->get_dai_id)
731 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
732
733 return ret;
734}
735
736static const struct snd_soc_codec_driver hdmi_codec = {
737 .component_driver = {
738 .dapm_widgets = hdmi_widgets,
739 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
740 .dapm_routes = hdmi_routes,
741 .num_dapm_routes = ARRAY_SIZE(hdmi_routes),
742 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
743 },
744};
745
746static int hdmi_codec_probe(struct platform_device *pdev)
747{
748 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
749 struct device *dev = &pdev->dev;
750 struct hdmi_codec_priv *hcp;
751 int dai_count, i = 0;
752 int ret;
753
754 dev_dbg(dev, "%s()\n", __func__);
755
756 if (!hcd) {
757 dev_err(dev, "%s: No plalform data\n", __func__);
758 return -EINVAL;
759 }
760
761 dai_count = hcd->i2s + hcd->spdif;
762 if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
763 !hcd->ops->audio_shutdown) {
764 dev_err(dev, "%s: Invalid parameters\n", __func__);
765 return -EINVAL;
766 }
767
768 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
769 if (!hcp)
770 return -ENOMEM;
771
772 hcp->hcd = *hcd;
773 mutex_init(&hcp->current_stream_lock);
774
775 hcp->daidrv = devm_kzalloc(dev, dai_count * sizeof(*hcp->daidrv),
776 GFP_KERNEL);
777 if (!hcp->daidrv)
778 return -ENOMEM;
779
780 if (hcd->i2s) {
781 hcp->daidrv[i] = hdmi_i2s_dai;
782 hcp->daidrv[i].playback.channels_max =
783 hcd->max_i2s_channels;
784 i++;
785 }
786
787 if (hcd->spdif)
788 hcp->daidrv[i] = hdmi_spdif_dai;
789
790 ret = snd_soc_register_codec(dev, &hdmi_codec, hcp->daidrv,
791 dai_count);
792 if (ret) {
793 dev_err(dev, "%s: snd_soc_register_codec() failed (%d)\n",
794 __func__, ret);
795 return ret;
796 }
797
798 dev_set_drvdata(dev, hcp);
799 return 0;
800}
801
802static int hdmi_codec_remove(struct platform_device *pdev)
803{
804 struct device *dev = &pdev->dev;
805 struct hdmi_codec_priv *hcp;
806
807 hcp = dev_get_drvdata(dev);
808 kfree(hcp->chmap_info);
809 snd_soc_unregister_codec(dev);
810
811 return 0;
812}
813
814static struct platform_driver hdmi_codec_driver = {
815 .driver = {
816 .name = HDMI_CODEC_DRV_NAME,
817 },
818 .probe = hdmi_codec_probe,
819 .remove = hdmi_codec_remove,
820};
821
822module_platform_driver(hdmi_codec_driver);
823
824MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
825MODULE_DESCRIPTION("HDMI Audio Codec Driver");
826MODULE_LICENSE("GPL");
827MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
828