1 // SPDX-License-Identifier: GPL-2.0-only
3 * ALSA SoC codec for HDMI encoder drivers
4 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
5 * Author: Jyri Sarha <jsarha@ti.com>
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>
18 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
20 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
22 struct hdmi_codec_channel_map_table {
23 unsigned char map; /* ALSA API channel map position */
24 unsigned long spk_mask; /* speaker position bit mask */
28 * CEA speaker placement for HDMI 1.4:
30 * FL FLC FC FRC FR FRW
36 * Speaker placement has to be extended to support HDMI 2.0
38 enum hdmi_codec_cea_spk_placement {
39 FL = BIT(0), /* Front Left */
40 FC = BIT(1), /* Front Center */
41 FR = BIT(2), /* Front Right */
42 FLC = BIT(3), /* Front Left Center */
43 FRC = BIT(4), /* Front Right Center */
44 RL = BIT(5), /* Rear Left */
45 RC = BIT(6), /* Rear Center */
46 RR = BIT(7), /* Rear Right */
47 RLC = BIT(8), /* Rear Left Center */
48 RRC = BIT(9), /* Rear Right Center */
49 LFE = BIT(10), /* Low Frequency Effect */
53 * cea Speaker allocation structure
55 struct hdmi_codec_cea_spk_alloc {
61 /* Channel maps stereo HDMI */
62 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
64 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
68 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
69 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
70 { .channels = 2, /* CA_ID 0x00 */
71 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
72 { .channels = 4, /* CA_ID 0x01 */
73 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
75 { .channels = 4, /* CA_ID 0x02 */
76 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
78 { .channels = 4, /* CA_ID 0x03 */
79 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
81 { .channels = 6, /* CA_ID 0x04 */
82 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
83 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
84 { .channels = 6, /* CA_ID 0x05 */
85 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
86 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
87 { .channels = 6, /* CA_ID 0x06 */
88 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
89 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
90 { .channels = 6, /* CA_ID 0x07 */
91 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
92 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
93 { .channels = 6, /* CA_ID 0x08 */
94 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
95 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
96 { .channels = 6, /* CA_ID 0x09 */
97 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
98 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
99 { .channels = 6, /* CA_ID 0x0A */
100 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
101 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
102 { .channels = 6, /* CA_ID 0x0B */
103 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
104 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
105 { .channels = 8, /* CA_ID 0x0C */
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, /* CA_ID 0x0D */
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, /* CA_ID 0x0E */
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, /* CA_ID 0x0F */
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, /* CA_ID 0x10 */
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, /* CA_ID 0x11 */
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, /* CA_ID 0x12 */
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, /* CA_ID 0x13 */
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, /* CA_ID 0x14 */
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, /* CA_ID 0x15 */
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, /* CA_ID 0x16 */
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, /* CA_ID 0x17 */
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, /* CA_ID 0x18 */
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, /* CA_ID 0x19 */
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, /* CA_ID 0x1A */
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, /* CA_ID 0x1B */
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, /* CA_ID 0x1C */
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, /* CA_ID 0x1D */
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, /* CA_ID 0x1E */
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, /* CA_ID 0x1F */
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 } },
189 * hdmi_codec_channel_alloc: speaker configuration available for CEA
191 * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
192 * The preceding ones have better chances to be selected by
193 * hdmi_codec_get_ch_alloc_table_idx().
195 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
196 { .ca_id = 0x00, .n_ch = 2,
199 { .ca_id = 0x01, .n_ch = 4,
200 .mask = FL | FR | LFE},
202 { .ca_id = 0x02, .n_ch = 4,
203 .mask = FL | FR | FC },
205 { .ca_id = 0x0b, .n_ch = 6,
206 .mask = FL | FR | LFE | FC | RL | RR},
208 { .ca_id = 0x08, .n_ch = 6,
209 .mask = FL | FR | RL | RR },
211 { .ca_id = 0x09, .n_ch = 6,
212 .mask = FL | FR | LFE | RL | RR },
214 { .ca_id = 0x0a, .n_ch = 6,
215 .mask = FL | FR | FC | RL | RR },
217 { .ca_id = 0x0f, .n_ch = 8,
218 .mask = FL | FR | LFE | FC | RL | RR | RC },
220 { .ca_id = 0x13, .n_ch = 8,
221 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
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 },
271 struct hdmi_codec_priv {
272 struct hdmi_codec_pdata hcd;
273 uint8_t eld[MAX_ELD_BYTES];
274 struct snd_pcm_chmap *chmap_info;
275 unsigned int chmap_idx;
279 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
280 SND_SOC_DAPM_OUTPUT("TX"),
288 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
289 struct snd_ctl_elem_info *uinfo)
291 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
292 uinfo->count = FIELD_SIZEOF(struct hdmi_codec_priv, eld);
297 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
298 struct snd_ctl_elem_value *ucontrol)
300 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
301 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
303 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
308 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
311 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
312 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
313 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
315 unsigned long spk_mask = 0;
317 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
318 if (spk_alloc & (1 << i))
319 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
325 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
328 unsigned long spk_mask;
330 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
331 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
333 /* Detect if only stereo supported, else return 8 channels mappings */
334 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
335 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
337 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
340 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
341 unsigned char channels)
345 unsigned long spk_mask;
346 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
348 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
349 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
351 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
352 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
353 if (!spk_alloc && cap->ca_id == 0)
355 if (cap->n_ch != channels)
357 if (!(cap->mask == (spk_mask & cap->mask)))
364 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
365 struct snd_ctl_elem_value *ucontrol)
367 unsigned const char *map;
369 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
370 struct hdmi_codec_priv *hcp = info->private_data;
372 map = info->chmap[hcp->chmap_idx].map;
374 for (i = 0; i < info->max_channels; i++) {
375 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
376 ucontrol->value.integer.value[i] = 0;
378 ucontrol->value.integer.value[i] = map[i];
384 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
385 struct snd_soc_dai *dai)
387 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
390 ret = mutex_trylock(&hcp->lock);
392 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
396 if (hcp->hcd.ops->audio_startup) {
397 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
402 if (hcp->hcd.ops->get_eld) {
403 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
404 hcp->eld, sizeof(hcp->eld));
407 ret = snd_pcm_hw_constraint_eld(substream->runtime,
412 /* Select chmap supported */
413 hdmi_codec_eld_chmap(hcp);
418 /* Release the exclusive lock on error */
419 mutex_unlock(&hcp->lock);
423 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
424 struct snd_soc_dai *dai)
426 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
428 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
429 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
431 mutex_unlock(&hcp->lock);
434 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
435 struct snd_pcm_hw_params *params,
436 struct snd_soc_dai *dai)
438 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
439 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
440 struct hdmi_codec_params hp = {
445 .dig_subframe = { 0 },
450 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
451 params_width(params), params_rate(params),
452 params_channels(params));
454 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
455 sizeof(hp.iec.status));
457 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
462 hdmi_audio_infoframe_init(&hp.cea);
463 hp.cea.channels = params_channels(params);
464 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
465 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
466 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
468 /* Select a channel allocation that matches with ELD and pcm channels */
469 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
471 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
473 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
476 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
477 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
479 hp.sample_width = params_width(params);
480 hp.sample_rate = params_rate(params);
481 hp.channels = params_channels(params);
483 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
487 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
490 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
493 memset(cf, 0, sizeof(*cf));
495 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
496 case SND_SOC_DAIFMT_CBM_CFM:
497 cf->bit_clk_master = 1;
498 cf->frame_clk_master = 1;
500 case SND_SOC_DAIFMT_CBS_CFM:
501 cf->frame_clk_master = 1;
503 case SND_SOC_DAIFMT_CBM_CFS:
504 cf->bit_clk_master = 1;
506 case SND_SOC_DAIFMT_CBS_CFS:
512 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
513 case SND_SOC_DAIFMT_NB_NF:
515 case SND_SOC_DAIFMT_NB_IF:
516 cf->frame_clk_inv = 1;
518 case SND_SOC_DAIFMT_IB_NF:
521 case SND_SOC_DAIFMT_IB_IF:
522 cf->frame_clk_inv = 1;
527 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
528 case SND_SOC_DAIFMT_I2S:
531 case SND_SOC_DAIFMT_DSP_A:
532 cf->fmt = HDMI_DSP_A;
534 case SND_SOC_DAIFMT_DSP_B:
535 cf->fmt = HDMI_DSP_B;
537 case SND_SOC_DAIFMT_RIGHT_J:
538 cf->fmt = HDMI_RIGHT_J;
540 case SND_SOC_DAIFMT_LEFT_J:
541 cf->fmt = HDMI_LEFT_J;
543 case SND_SOC_DAIFMT_AC97:
547 dev_err(dai->dev, "Invalid DAI interface format\n");
554 static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
556 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
558 if (hcp->hcd.ops->digital_mute)
559 return hcp->hcd.ops->digital_mute(dai->dev->parent,
560 hcp->hcd.data, mute);
565 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
566 .startup = hdmi_codec_startup,
567 .shutdown = hdmi_codec_shutdown,
568 .hw_params = hdmi_codec_hw_params,
569 .set_fmt = hdmi_codec_i2s_set_fmt,
570 .digital_mute = hdmi_codec_digital_mute,
573 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
574 .startup = hdmi_codec_startup,
575 .shutdown = hdmi_codec_shutdown,
576 .hw_params = hdmi_codec_hw_params,
577 .digital_mute = hdmi_codec_digital_mute,
580 #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
581 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
582 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
583 SNDRV_PCM_RATE_192000)
585 #define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
586 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
587 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
588 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
591 * This list is only for formats allowed on the I2S bus. So there is
592 * some formats listed that are not supported by HDMI interface. For
593 * instance allowing the 32-bit formats enables 24-precision with CPU
594 * DAIs that do not support 24-bit formats. If the extra formats cause
595 * problems, we should add the video side driver an option to disable
598 #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
599 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
600 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
601 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
602 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
604 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
605 struct snd_soc_dai *dai)
607 struct snd_soc_dai_driver *drv = dai->driver;
608 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
609 struct snd_kcontrol *kctl;
610 struct snd_kcontrol_new hdmi_eld_ctl = {
611 .access = SNDRV_CTL_ELEM_ACCESS_READ |
612 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
613 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
615 .info = hdmi_eld_ctl_info,
616 .get = hdmi_eld_ctl_get,
617 .device = rtd->pcm->device,
621 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
622 NULL, drv->playback.channels_max, 0,
627 /* override handlers */
628 hcp->chmap_info->private_data = hcp;
629 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
631 /* default chmap supported is stereo */
632 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
633 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
635 /* add ELD ctl with the device number corresponding to the PCM stream */
636 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
640 return snd_ctl_add(rtd->card->snd_card, kctl);
643 static int hdmi_dai_probe(struct snd_soc_dai *dai)
645 struct snd_soc_dapm_context *dapm;
646 struct hdmi_codec_daifmt *daifmt;
647 struct snd_soc_dapm_route route = {
649 .source = dai->driver->playback.stream_name,
653 dapm = snd_soc_component_get_dapm(dai->component);
654 ret = snd_soc_dapm_add_routes(dapm, &route, 1);
658 daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
662 dai->playback_dma_data = daifmt;
666 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
668 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
671 ret = hdmi_dai_probe(dai);
675 cf = dai->playback_dma_data;
676 cf->fmt = HDMI_SPDIF;
681 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
683 kfree(dai->playback_dma_data);
687 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
690 .probe = hdmi_dai_probe,
691 .remove = hdmi_codec_dai_remove,
693 .stream_name = "I2S Playback",
697 .formats = I2S_FORMATS,
700 .ops = &hdmi_codec_i2s_dai_ops,
701 .pcm_new = hdmi_codec_pcm_new,
704 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
705 .name = "spdif-hifi",
707 .probe = hdmi_dai_spdif_probe,
708 .remove = hdmi_codec_dai_remove,
710 .stream_name = "SPDIF Playback",
714 .formats = SPDIF_FORMATS,
716 .ops = &hdmi_codec_spdif_dai_ops,
717 .pcm_new = hdmi_codec_pcm_new,
720 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
721 struct device_node *endpoint)
723 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
724 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
726 if (hcp->hcd.ops->get_dai_id)
727 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
732 static const struct snd_soc_component_driver hdmi_driver = {
733 .dapm_widgets = hdmi_widgets,
734 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
735 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
737 .use_pmdown_time = 1,
739 .non_legacy_dai_naming = 1,
742 static int hdmi_codec_probe(struct platform_device *pdev)
744 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
745 struct snd_soc_dai_driver *daidrv;
746 struct device *dev = &pdev->dev;
747 struct hdmi_codec_priv *hcp;
748 int dai_count, i = 0;
752 dev_err(dev, "%s: No platform data\n", __func__);
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__);
763 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
768 mutex_init(&hcp->lock);
770 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
775 daidrv[i] = hdmi_i2s_dai;
776 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
781 daidrv[i] = hdmi_spdif_dai;
783 dev_set_drvdata(dev, hcp);
785 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
788 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
795 static struct platform_driver hdmi_codec_driver = {
797 .name = HDMI_CODEC_DRV_NAME,
799 .probe = hdmi_codec_probe,
802 module_platform_driver(hdmi_codec_driver);
804 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
805 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
806 MODULE_LICENSE("GPL");
807 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);