2 * ALSA SoC codec for HDMI encoder drivers
3 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Jyri Sarha <jsarha@ti.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
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>
26 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
28 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
30 struct hdmi_codec_channel_map_table {
31 unsigned char map; /* ALSA API channel map position */
32 unsigned long spk_mask; /* speaker position bit mask */
36 * CEA speaker placement for HDMI 1.4:
38 * FL FLC FC FRC FR FRW
44 * Speaker placement has to be extended to support HDMI 2.0
46 enum hdmi_codec_cea_spk_placement {
47 FL = BIT(0), /* Front Left */
48 FC = BIT(1), /* Front Center */
49 FR = BIT(2), /* Front Right */
50 FLC = BIT(3), /* Front Left Center */
51 FRC = BIT(4), /* Front Right Center */
52 RL = BIT(5), /* Rear Left */
53 RC = BIT(6), /* Rear Center */
54 RR = BIT(7), /* Rear Right */
55 RLC = BIT(8), /* Rear Left Center */
56 RRC = BIT(9), /* Rear Right Center */
57 LFE = BIT(10), /* Low Frequency Effect */
61 * cea Speaker allocation structure
63 struct hdmi_codec_cea_spk_alloc {
69 /* Channel maps stereo HDMI */
70 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
72 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
76 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
77 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
78 { .channels = 2, /* CA_ID 0x00 */
79 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
80 { .channels = 4, /* CA_ID 0x01 */
81 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
83 { .channels = 4, /* CA_ID 0x02 */
84 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
86 { .channels = 4, /* CA_ID 0x03 */
87 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
89 { .channels = 6, /* CA_ID 0x04 */
90 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
91 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
92 { .channels = 6, /* CA_ID 0x05 */
93 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
94 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
95 { .channels = 6, /* CA_ID 0x06 */
96 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
97 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
98 { .channels = 6, /* CA_ID 0x07 */
99 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
100 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
101 { .channels = 6, /* CA_ID 0x08 */
102 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
103 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
104 { .channels = 6, /* CA_ID 0x09 */
105 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
106 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
107 { .channels = 6, /* CA_ID 0x0A */
108 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
109 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
110 { .channels = 6, /* CA_ID 0x0B */
111 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
112 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
113 { .channels = 8, /* CA_ID 0x0C */
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, /* CA_ID 0x0D */
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, /* CA_ID 0x0E */
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, /* CA_ID 0x0F */
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, /* CA_ID 0x10 */
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, /* CA_ID 0x11 */
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, /* CA_ID 0x12 */
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, /* CA_ID 0x13 */
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, /* CA_ID 0x14 */
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, /* CA_ID 0x15 */
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, /* CA_ID 0x16 */
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, /* CA_ID 0x17 */
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, /* CA_ID 0x18 */
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, /* CA_ID 0x19 */
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, /* CA_ID 0x1A */
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, /* CA_ID 0x1B */
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, /* CA_ID 0x1C */
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, /* CA_ID 0x1D */
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, /* CA_ID 0x1E */
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, /* CA_ID 0x1F */
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 } },
197 * hdmi_codec_channel_alloc: speaker configuration available for CEA
199 * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
200 * The preceding ones have better chances to be selected by
201 * hdmi_codec_get_ch_alloc_table_idx().
203 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
204 { .ca_id = 0x00, .n_ch = 2,
207 { .ca_id = 0x01, .n_ch = 4,
208 .mask = FL | FR | LFE},
210 { .ca_id = 0x02, .n_ch = 4,
211 .mask = FL | FR | FC },
213 { .ca_id = 0x0b, .n_ch = 6,
214 .mask = FL | FR | LFE | FC | RL | RR},
216 { .ca_id = 0x08, .n_ch = 6,
217 .mask = FL | FR | RL | RR },
219 { .ca_id = 0x09, .n_ch = 6,
220 .mask = FL | FR | LFE | RL | RR },
222 { .ca_id = 0x0a, .n_ch = 6,
223 .mask = FL | FR | FC | RL | RR },
225 { .ca_id = 0x0f, .n_ch = 8,
226 .mask = FL | FR | LFE | FC | RL | RR | RC },
228 { .ca_id = 0x13, .n_ch = 8,
229 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
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 },
279 struct 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;
290 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
291 SND_SOC_DAPM_OUTPUT("TX"),
294 static const struct snd_soc_dapm_route hdmi_routes[] = {
295 { "TX", NULL, "Playback" },
303 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
304 struct snd_ctl_elem_info *uinfo)
306 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
307 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
309 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
310 uinfo->count = sizeof(hcp->eld);
315 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
316 struct snd_ctl_elem_value *ucontrol)
318 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
319 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
321 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
326 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
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,
333 unsigned long spk_mask = 0;
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];
343 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
346 unsigned long spk_mask;
348 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
349 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
351 /* Detect if only stereo supported, else return 8 channels mappings */
352 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
353 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
355 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
358 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
359 unsigned char channels)
363 unsigned long spk_mask;
364 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
366 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
367 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
369 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
370 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
371 if (!spk_alloc && cap->ca_id == 0)
373 if (cap->n_ch != channels)
375 if (!(cap->mask == (spk_mask & cap->mask)))
382 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
383 struct snd_ctl_elem_value *ucontrol)
385 unsigned const char *map;
387 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
388 struct hdmi_codec_priv *hcp = info->private_data;
390 map = info->chmap[hcp->chmap_idx].map;
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;
396 ucontrol->value.integer.value[i] = map[i];
402 static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
403 struct snd_soc_dai *dai)
405 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
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");
415 mutex_unlock(&hcp->current_stream_lock);
420 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
421 struct snd_soc_dai *dai)
423 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
426 dev_dbg(dai->dev, "%s()\n", __func__);
428 ret = hdmi_codec_new_stream(substream, dai);
432 if (hcp->hcd.ops->audio_startup) {
433 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
435 mutex_lock(&hcp->current_stream_lock);
436 hcp->current_stream = NULL;
437 mutex_unlock(&hcp->current_stream_lock);
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));
447 ret = snd_pcm_hw_constraint_eld(substream->runtime,
452 /* Select chmap supported */
453 hdmi_codec_eld_chmap(hcp);
458 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
459 struct snd_soc_dai *dai)
461 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
463 dev_dbg(dai->dev, "%s()\n", __func__);
465 WARN_ON(hcp->current_stream != substream);
467 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
468 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
470 mutex_lock(&hcp->current_stream_lock);
471 hcp->current_stream = NULL;
472 mutex_unlock(&hcp->current_stream_lock);
475 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
476 struct snd_pcm_hw_params *params,
477 struct snd_soc_dai *dai)
479 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
480 struct hdmi_codec_params hp = {
485 .dig_subframe = { 0 },
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));
494 if (params_width(params) > 24)
497 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
498 sizeof(hp.iec.status));
500 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
505 ret = hdmi_codec_new_stream(substream, dai);
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;
515 /* Select a channel allocation that matches with ELD and pcm channels */
516 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
518 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
520 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
523 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
524 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
526 hp.sample_width = params_width(params);
527 hp.sample_rate = params_rate(params);
528 hp.channels = params_channels(params);
530 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
531 &hcp->daifmt[dai->id], &hp);
534 static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
537 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
538 struct hdmi_codec_daifmt cf = { 0 };
541 dev_dbg(dai->dev, "%s()\n", __func__);
543 if (dai->id == DAI_ID_SPDIF) {
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;
551 case SND_SOC_DAIFMT_CBS_CFM:
552 cf.frame_clk_master = 1;
554 case SND_SOC_DAIFMT_CBM_CFS:
555 cf.bit_clk_master = 1;
557 case SND_SOC_DAIFMT_CBS_CFS:
563 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
564 case SND_SOC_DAIFMT_NB_NF:
566 case SND_SOC_DAIFMT_NB_IF:
567 cf.frame_clk_inv = 1;
569 case SND_SOC_DAIFMT_IB_NF:
572 case SND_SOC_DAIFMT_IB_IF:
573 cf.frame_clk_inv = 1;
578 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
579 case SND_SOC_DAIFMT_I2S:
582 case SND_SOC_DAIFMT_DSP_A:
585 case SND_SOC_DAIFMT_DSP_B:
588 case SND_SOC_DAIFMT_RIGHT_J:
589 cf.fmt = HDMI_RIGHT_J;
591 case SND_SOC_DAIFMT_LEFT_J:
592 cf.fmt = HDMI_LEFT_J;
594 case SND_SOC_DAIFMT_AC97:
598 dev_err(dai->dev, "Invalid DAI interface format\n");
603 hcp->daifmt[dai->id] = cf;
608 static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
610 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
612 dev_dbg(dai->dev, "%s()\n", __func__);
614 if (hcp->hcd.ops->digital_mute)
615 return hcp->hcd.ops->digital_mute(dai->dev->parent,
616 hcp->hcd.data, mute);
621 static 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,
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)
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)
641 * This list is only for formats allowed on the I2S bus. So there is
642 * some formats listed that are not supported by HDMI interface. For
643 * instance allowing the 32-bit formats enables 24-precision with CPU
644 * DAIs that do not support 24-bit formats. If the extra formats cause
645 * problems, we should add the video side driver an option to disable
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)
654 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
655 struct snd_soc_dai *dai)
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,
665 .info = hdmi_eld_ctl_info,
666 .get = hdmi_eld_ctl_get,
667 .device = rtd->pcm->device,
671 dev_dbg(dai->dev, "%s()\n", __func__);
673 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
674 NULL, drv->playback.channels_max, 0,
679 /* override handlers */
680 hcp->chmap_info->private_data = hcp;
681 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
683 /* default chmap supported is stereo */
684 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
685 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
687 /* add ELD ctl with the device number corresponding to the PCM stream */
688 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
692 return snd_ctl_add(rtd->card->snd_card, kctl);
695 static struct snd_soc_dai_driver hdmi_i2s_dai = {
699 .stream_name = "I2S Playback",
703 .formats = I2S_FORMATS,
706 .ops = &hdmi_dai_ops,
707 .pcm_new = hdmi_codec_pcm_new,
710 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
711 .name = "spdif-hifi",
714 .stream_name = "SPDIF Playback",
718 .formats = SPDIF_FORMATS,
720 .ops = &hdmi_dai_ops,
721 .pcm_new = hdmi_codec_pcm_new,
724 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
725 struct device_node *endpoint)
727 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
728 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
730 if (hcp->hcd.ops->get_dai_id)
731 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
736 static 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,
746 static int hdmi_codec_probe(struct platform_device *pdev)
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;
754 dev_dbg(dev, "%s()\n", __func__);
757 dev_err(dev, "%s: No plalform data\n", __func__);
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__);
768 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
773 mutex_init(&hcp->current_stream_lock);
775 hcp->daidrv = devm_kzalloc(dev, dai_count * sizeof(*hcp->daidrv),
781 hcp->daidrv[i] = hdmi_i2s_dai;
782 hcp->daidrv[i].playback.channels_max =
783 hcd->max_i2s_channels;
788 hcp->daidrv[i] = hdmi_spdif_dai;
790 ret = snd_soc_register_codec(dev, &hdmi_codec, hcp->daidrv,
793 dev_err(dev, "%s: snd_soc_register_codec() failed (%d)\n",
798 dev_set_drvdata(dev, hcp);
802 static int hdmi_codec_remove(struct platform_device *pdev)
804 struct device *dev = &pdev->dev;
805 struct hdmi_codec_priv *hcp;
807 hcp = dev_get_drvdata(dev);
808 kfree(hcp->chmap_info);
809 snd_soc_unregister_codec(dev);
814 static struct platform_driver hdmi_codec_driver = {
816 .name = HDMI_CODEC_DRV_NAME,
818 .probe = hdmi_codec_probe,
819 .remove = hdmi_codec_remove,
822 module_platform_driver(hdmi_codec_driver);
824 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
825 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
826 MODULE_LICENSE("GPL");
827 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);