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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * ALSA SoC codec for HDMI encoder drivers
4 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
5 * Author: Jyri Sarha <jsarha@ti.com>
6 */
7#include <linux/module.h>
8#include <linux/string.h>
9#include <sound/core.h>
10#include <sound/jack.h>
11#include <sound/pcm.h>
12#include <sound/pcm_params.h>
13#include <sound/soc.h>
14#include <sound/tlv.h>
15#include <sound/pcm_drm_eld.h>
16#include <sound/hdmi-codec.h>
17#include <sound/pcm_iec958.h>
18
19#include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
20
21#define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
22
23struct hdmi_codec_channel_map_table {
24 unsigned char map; /* ALSA API channel map position */
25 unsigned long spk_mask; /* speaker position bit mask */
26};
27
28/*
29 * CEA speaker placement for HDMI 1.4:
30 *
31 * FL FLC FC FRC FR FRW
32 *
33 * LFE
34 *
35 * RL RLC RC RRC RR
36 *
37 * Speaker placement has to be extended to support HDMI 2.0
38 */
39enum hdmi_codec_cea_spk_placement {
40 FL = BIT(0), /* Front Left */
41 FC = BIT(1), /* Front Center */
42 FR = BIT(2), /* Front Right */
43 FLC = BIT(3), /* Front Left Center */
44 FRC = BIT(4), /* Front Right Center */
45 RL = BIT(5), /* Rear Left */
46 RC = BIT(6), /* Rear Center */
47 RR = BIT(7), /* Rear Right */
48 RLC = BIT(8), /* Rear Left Center */
49 RRC = BIT(9), /* Rear Right Center */
50 LFE = BIT(10), /* Low Frequency Effect */
51};
52
53/*
54 * cea Speaker allocation structure
55 */
56struct hdmi_codec_cea_spk_alloc {
57 const int ca_id;
58 unsigned int n_ch;
59 unsigned long mask;
60};
61
62/* Channel maps stereo HDMI */
63static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
64 { .channels = 2,
65 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
66 { }
67};
68
69/* Channel maps for multi-channel playbacks, up to 8 n_ch */
70static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
71 { .channels = 2, /* CA_ID 0x00 */
72 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
73 { .channels = 4, /* CA_ID 0x01 */
74 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
75 SNDRV_CHMAP_NA } },
76 { .channels = 4, /* CA_ID 0x02 */
77 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
78 SNDRV_CHMAP_FC } },
79 { .channels = 4, /* CA_ID 0x03 */
80 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
81 SNDRV_CHMAP_FC } },
82 { .channels = 6, /* CA_ID 0x04 */
83 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
84 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
85 { .channels = 6, /* CA_ID 0x05 */
86 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
87 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
88 { .channels = 6, /* CA_ID 0x06 */
89 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
90 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
91 { .channels = 6, /* CA_ID 0x07 */
92 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
93 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
94 { .channels = 6, /* CA_ID 0x08 */
95 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
96 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
97 { .channels = 6, /* CA_ID 0x09 */
98 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
99 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
100 { .channels = 6, /* CA_ID 0x0A */
101 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
102 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
103 { .channels = 6, /* CA_ID 0x0B */
104 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
105 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
106 { .channels = 8, /* CA_ID 0x0C */
107 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
108 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
109 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
110 { .channels = 8, /* CA_ID 0x0D */
111 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
112 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
113 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
114 { .channels = 8, /* CA_ID 0x0E */
115 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
116 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
117 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
118 { .channels = 8, /* CA_ID 0x0F */
119 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
120 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
121 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
122 { .channels = 8, /* CA_ID 0x10 */
123 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
124 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
125 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
126 { .channels = 8, /* CA_ID 0x11 */
127 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
128 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
129 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
130 { .channels = 8, /* CA_ID 0x12 */
131 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
132 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
133 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
134 { .channels = 8, /* CA_ID 0x13 */
135 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
136 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
137 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
138 { .channels = 8, /* CA_ID 0x14 */
139 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
140 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
141 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
142 { .channels = 8, /* CA_ID 0x15 */
143 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
144 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
145 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
146 { .channels = 8, /* CA_ID 0x16 */
147 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
148 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
149 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
150 { .channels = 8, /* CA_ID 0x17 */
151 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
152 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
153 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
154 { .channels = 8, /* CA_ID 0x18 */
155 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
156 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
157 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
158 { .channels = 8, /* CA_ID 0x19 */
159 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
160 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
161 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
162 { .channels = 8, /* CA_ID 0x1A */
163 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
164 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
165 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
166 { .channels = 8, /* CA_ID 0x1B */
167 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
168 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
169 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
170 { .channels = 8, /* CA_ID 0x1C */
171 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
172 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
173 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
174 { .channels = 8, /* CA_ID 0x1D */
175 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
176 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
177 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
178 { .channels = 8, /* CA_ID 0x1E */
179 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
180 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
181 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
182 { .channels = 8, /* CA_ID 0x1F */
183 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
184 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
185 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
186 { }
187};
188
189/*
190 * hdmi_codec_channel_alloc: speaker configuration available for CEA
191 *
192 * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
193 * The preceding ones have better chances to be selected by
194 * hdmi_codec_get_ch_alloc_table_idx().
195 */
196static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
197 { .ca_id = 0x00, .n_ch = 2,
198 .mask = FL | FR},
199 /* 2.1 */
200 { .ca_id = 0x01, .n_ch = 4,
201 .mask = FL | FR | LFE},
202 /* Dolby Surround */
203 { .ca_id = 0x02, .n_ch = 4,
204 .mask = FL | FR | FC },
205 /* surround51 */
206 { .ca_id = 0x0b, .n_ch = 6,
207 .mask = FL | FR | LFE | FC | RL | RR},
208 /* surround40 */
209 { .ca_id = 0x08, .n_ch = 6,
210 .mask = FL | FR | RL | RR },
211 /* surround41 */
212 { .ca_id = 0x09, .n_ch = 6,
213 .mask = FL | FR | LFE | RL | RR },
214 /* surround50 */
215 { .ca_id = 0x0a, .n_ch = 6,
216 .mask = FL | FR | FC | RL | RR },
217 /* 6.1 */
218 { .ca_id = 0x0f, .n_ch = 8,
219 .mask = FL | FR | LFE | FC | RL | RR | RC },
220 /* surround71 */
221 { .ca_id = 0x13, .n_ch = 8,
222 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
223 /* others */
224 { .ca_id = 0x03, .n_ch = 8,
225 .mask = FL | FR | LFE | FC },
226 { .ca_id = 0x04, .n_ch = 8,
227 .mask = FL | FR | RC},
228 { .ca_id = 0x05, .n_ch = 8,
229 .mask = FL | FR | LFE | RC },
230 { .ca_id = 0x06, .n_ch = 8,
231 .mask = FL | FR | FC | RC },
232 { .ca_id = 0x07, .n_ch = 8,
233 .mask = FL | FR | LFE | FC | RC },
234 { .ca_id = 0x0c, .n_ch = 8,
235 .mask = FL | FR | RC | RL | RR },
236 { .ca_id = 0x0d, .n_ch = 8,
237 .mask = FL | FR | LFE | RL | RR | RC },
238 { .ca_id = 0x0e, .n_ch = 8,
239 .mask = FL | FR | FC | RL | RR | RC },
240 { .ca_id = 0x10, .n_ch = 8,
241 .mask = FL | FR | RL | RR | RLC | RRC },
242 { .ca_id = 0x11, .n_ch = 8,
243 .mask = FL | FR | LFE | RL | RR | RLC | RRC },
244 { .ca_id = 0x12, .n_ch = 8,
245 .mask = FL | FR | FC | RL | RR | RLC | RRC },
246 { .ca_id = 0x14, .n_ch = 8,
247 .mask = FL | FR | FLC | FRC },
248 { .ca_id = 0x15, .n_ch = 8,
249 .mask = FL | FR | LFE | FLC | FRC },
250 { .ca_id = 0x16, .n_ch = 8,
251 .mask = FL | FR | FC | FLC | FRC },
252 { .ca_id = 0x17, .n_ch = 8,
253 .mask = FL | FR | LFE | FC | FLC | FRC },
254 { .ca_id = 0x18, .n_ch = 8,
255 .mask = FL | FR | RC | FLC | FRC },
256 { .ca_id = 0x19, .n_ch = 8,
257 .mask = FL | FR | LFE | RC | FLC | FRC },
258 { .ca_id = 0x1a, .n_ch = 8,
259 .mask = FL | FR | RC | FC | FLC | FRC },
260 { .ca_id = 0x1b, .n_ch = 8,
261 .mask = FL | FR | LFE | RC | FC | FLC | FRC },
262 { .ca_id = 0x1c, .n_ch = 8,
263 .mask = FL | FR | RL | RR | FLC | FRC },
264 { .ca_id = 0x1d, .n_ch = 8,
265 .mask = FL | FR | LFE | RL | RR | FLC | FRC },
266 { .ca_id = 0x1e, .n_ch = 8,
267 .mask = FL | FR | FC | RL | RR | FLC | FRC },
268 { .ca_id = 0x1f, .n_ch = 8,
269 .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
270};
271
272struct hdmi_codec_priv {
273 struct hdmi_codec_pdata hcd;
274 uint8_t eld[MAX_ELD_BYTES];
275 struct snd_pcm_chmap *chmap_info;
276 unsigned int chmap_idx;
277 struct mutex lock;
278 bool busy;
279 struct snd_soc_jack *jack;
280 unsigned int jack_status;
281};
282
283static const struct snd_soc_dapm_widget hdmi_widgets[] = {
284 SND_SOC_DAPM_OUTPUT("TX"),
285};
286
287enum {
288 DAI_ID_I2S = 0,
289 DAI_ID_SPDIF,
290};
291
292static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
293 struct snd_ctl_elem_info *uinfo)
294{
295 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
296 uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
297
298 return 0;
299}
300
301static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
302 struct snd_ctl_elem_value *ucontrol)
303{
304 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
305 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
306
307 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
308
309 return 0;
310}
311
312static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
313{
314 int i;
315 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
316 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
317 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
318 };
319 unsigned long spk_mask = 0;
320
321 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
322 if (spk_alloc & (1 << i))
323 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
324 }
325
326 return spk_mask;
327}
328
329static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
330{
331 u8 spk_alloc;
332 unsigned long spk_mask;
333
334 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
335 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
336
337 /* Detect if only stereo supported, else return 8 channels mappings */
338 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
339 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
340 else
341 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
342}
343
344static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
345 unsigned char channels)
346{
347 int i;
348 u8 spk_alloc;
349 unsigned long spk_mask;
350 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
351
352 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
353 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
354
355 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
356 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
357 if (!spk_alloc && cap->ca_id == 0)
358 return i;
359 if (cap->n_ch != channels)
360 continue;
361 if (!(cap->mask == (spk_mask & cap->mask)))
362 continue;
363 return i;
364 }
365
366 return -EINVAL;
367}
368static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
369 struct snd_ctl_elem_value *ucontrol)
370{
371 unsigned const char *map;
372 unsigned int i;
373 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
374 struct hdmi_codec_priv *hcp = info->private_data;
375
376 map = info->chmap[hcp->chmap_idx].map;
377
378 for (i = 0; i < info->max_channels; i++) {
379 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
380 ucontrol->value.integer.value[i] = 0;
381 else
382 ucontrol->value.integer.value[i] = map[i];
383 }
384
385 return 0;
386}
387
388static int hdmi_codec_startup(struct snd_pcm_substream *substream,
389 struct snd_soc_dai *dai)
390{
391 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
392 int ret = 0;
393
394 mutex_lock(&hcp->lock);
395 if (hcp->busy) {
396 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
397 mutex_unlock(&hcp->lock);
398 return -EINVAL;
399 }
400
401 if (hcp->hcd.ops->audio_startup) {
402 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
403 if (ret)
404 goto err;
405 }
406
407 if (hcp->hcd.ops->get_eld) {
408 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
409 hcp->eld, sizeof(hcp->eld));
410 if (ret)
411 goto err;
412
413 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
414 if (ret)
415 goto err;
416
417 /* Select chmap supported */
418 hdmi_codec_eld_chmap(hcp);
419 }
420
421 hcp->busy = true;
422
423err:
424 mutex_unlock(&hcp->lock);
425 return ret;
426}
427
428static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
429 struct snd_soc_dai *dai)
430{
431 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
432
433 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
434 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
435
436 mutex_lock(&hcp->lock);
437 hcp->busy = false;
438 mutex_unlock(&hcp->lock);
439}
440
441static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
442 struct snd_pcm_hw_params *params,
443 struct snd_soc_dai *dai)
444{
445 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
446 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
447 struct hdmi_codec_params hp = {
448 .iec = {
449 .status = { 0 },
450 .subcode = { 0 },
451 .pad = 0,
452 .dig_subframe = { 0 },
453 }
454 };
455 int ret, idx;
456
457 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
458 params_width(params), params_rate(params),
459 params_channels(params));
460
461 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
462 sizeof(hp.iec.status));
463 if (ret < 0) {
464 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
465 ret);
466 return ret;
467 }
468
469 hdmi_audio_infoframe_init(&hp.cea);
470 hp.cea.channels = params_channels(params);
471 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
472 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
473 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
474
475 /* Select a channel allocation that matches with ELD and pcm channels */
476 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
477 if (idx < 0) {
478 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
479 idx);
480 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
481 return idx;
482 }
483 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
484 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
485
486 hp.sample_width = params_width(params);
487 hp.sample_rate = params_rate(params);
488 hp.channels = params_channels(params);
489
490 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
491 cf, &hp);
492}
493
494static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
495 unsigned int fmt)
496{
497 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
498
499 /* Reset daifmt */
500 memset(cf, 0, sizeof(*cf));
501
502 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
503 case SND_SOC_DAIFMT_CBM_CFM:
504 cf->bit_clk_master = 1;
505 cf->frame_clk_master = 1;
506 break;
507 case SND_SOC_DAIFMT_CBS_CFM:
508 cf->frame_clk_master = 1;
509 break;
510 case SND_SOC_DAIFMT_CBM_CFS:
511 cf->bit_clk_master = 1;
512 break;
513 case SND_SOC_DAIFMT_CBS_CFS:
514 break;
515 default:
516 return -EINVAL;
517 }
518
519 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
520 case SND_SOC_DAIFMT_NB_NF:
521 break;
522 case SND_SOC_DAIFMT_NB_IF:
523 cf->frame_clk_inv = 1;
524 break;
525 case SND_SOC_DAIFMT_IB_NF:
526 cf->bit_clk_inv = 1;
527 break;
528 case SND_SOC_DAIFMT_IB_IF:
529 cf->frame_clk_inv = 1;
530 cf->bit_clk_inv = 1;
531 break;
532 }
533
534 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
535 case SND_SOC_DAIFMT_I2S:
536 cf->fmt = HDMI_I2S;
537 break;
538 case SND_SOC_DAIFMT_DSP_A:
539 cf->fmt = HDMI_DSP_A;
540 break;
541 case SND_SOC_DAIFMT_DSP_B:
542 cf->fmt = HDMI_DSP_B;
543 break;
544 case SND_SOC_DAIFMT_RIGHT_J:
545 cf->fmt = HDMI_RIGHT_J;
546 break;
547 case SND_SOC_DAIFMT_LEFT_J:
548 cf->fmt = HDMI_LEFT_J;
549 break;
550 case SND_SOC_DAIFMT_AC97:
551 cf->fmt = HDMI_AC97;
552 break;
553 default:
554 dev_err(dai->dev, "Invalid DAI interface format\n");
555 return -EINVAL;
556 }
557
558 return 0;
559}
560
561static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
562{
563 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
564
565 /*
566 * ignore if direction was CAPTURE
567 * and it had .no_capture_mute flag
568 * see
569 * snd_soc_dai_digital_mute()
570 */
571 if (hcp->hcd.ops->mute_stream &&
572 (direction == SNDRV_PCM_STREAM_PLAYBACK ||
573 !hcp->hcd.ops->no_capture_mute))
574 return hcp->hcd.ops->mute_stream(dai->dev->parent,
575 hcp->hcd.data,
576 mute, direction);
577
578 return -ENOTSUPP;
579}
580
581static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
582 .startup = hdmi_codec_startup,
583 .shutdown = hdmi_codec_shutdown,
584 .hw_params = hdmi_codec_hw_params,
585 .set_fmt = hdmi_codec_i2s_set_fmt,
586 .mute_stream = hdmi_codec_mute,
587};
588
589static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
590 .startup = hdmi_codec_startup,
591 .shutdown = hdmi_codec_shutdown,
592 .hw_params = hdmi_codec_hw_params,
593 .mute_stream = hdmi_codec_mute,
594};
595
596#define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
597 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
598 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
599 SNDRV_PCM_RATE_192000)
600
601#define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
602 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
603 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
604 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
605
606/*
607 * This list is only for formats allowed on the I2S bus. So there is
608 * some formats listed that are not supported by HDMI interface. For
609 * instance allowing the 32-bit formats enables 24-precision with CPU
610 * DAIs that do not support 24-bit formats. If the extra formats cause
611 * problems, we should add the video side driver an option to disable
612 * them.
613 */
614#define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
615 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
616 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
617 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
618 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
619
620static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
621 struct snd_soc_dai *dai)
622{
623 struct snd_soc_dai_driver *drv = dai->driver;
624 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
625 struct snd_kcontrol *kctl;
626 struct snd_kcontrol_new hdmi_eld_ctl = {
627 .access = SNDRV_CTL_ELEM_ACCESS_READ |
628 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
629 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
630 .name = "ELD",
631 .info = hdmi_eld_ctl_info,
632 .get = hdmi_eld_ctl_get,
633 .device = rtd->pcm->device,
634 };
635 int ret;
636
637 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
638 NULL, drv->playback.channels_max, 0,
639 &hcp->chmap_info);
640 if (ret < 0)
641 return ret;
642
643 /* override handlers */
644 hcp->chmap_info->private_data = hcp;
645 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
646
647 /* default chmap supported is stereo */
648 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
649 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
650
651 /* add ELD ctl with the device number corresponding to the PCM stream */
652 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
653 if (!kctl)
654 return -ENOMEM;
655
656 return snd_ctl_add(rtd->card->snd_card, kctl);
657}
658
659static int hdmi_dai_probe(struct snd_soc_dai *dai)
660{
661 struct snd_soc_dapm_context *dapm;
662 struct hdmi_codec_daifmt *daifmt;
663 struct snd_soc_dapm_route route = {
664 .sink = "TX",
665 .source = dai->driver->playback.stream_name,
666 };
667 int ret;
668
669 dapm = snd_soc_component_get_dapm(dai->component);
670 ret = snd_soc_dapm_add_routes(dapm, &route, 1);
671 if (ret)
672 return ret;
673
674 daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
675 if (!daifmt)
676 return -ENOMEM;
677
678 dai->playback_dma_data = daifmt;
679 return 0;
680}
681
682static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
683 unsigned int jack_status)
684{
685 if (hcp->jack && jack_status != hcp->jack_status) {
686 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
687 hcp->jack_status = jack_status;
688 }
689}
690
691static void plugged_cb(struct device *dev, bool plugged)
692{
693 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
694
695 if (plugged)
696 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
697 else
698 hdmi_codec_jack_report(hcp, 0);
699}
700
701/**
702 * hdmi_codec_set_jack_detect - register HDMI plugged callback
703 * @component: the hdmi-codec instance
704 * @jack: ASoC jack to report (dis)connection events on
705 */
706int hdmi_codec_set_jack_detect(struct snd_soc_component *component,
707 struct snd_soc_jack *jack)
708{
709 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
710 int ret = -EOPNOTSUPP;
711
712 if (hcp->hcd.ops->hook_plugged_cb) {
713 hcp->jack = jack;
714 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
715 hcp->hcd.data,
716 plugged_cb,
717 component->dev);
718 if (ret)
719 hcp->jack = NULL;
720 }
721 return ret;
722}
723EXPORT_SYMBOL_GPL(hdmi_codec_set_jack_detect);
724
725static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
726{
727 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
728 int ret;
729
730 ret = hdmi_dai_probe(dai);
731 if (ret)
732 return ret;
733
734 cf = dai->playback_dma_data;
735 cf->fmt = HDMI_SPDIF;
736
737 return 0;
738}
739
740static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
741{
742 kfree(dai->playback_dma_data);
743 return 0;
744}
745
746static const struct snd_soc_dai_driver hdmi_i2s_dai = {
747 .name = "i2s-hifi",
748 .id = DAI_ID_I2S,
749 .probe = hdmi_dai_probe,
750 .remove = hdmi_codec_dai_remove,
751 .playback = {
752 .stream_name = "I2S Playback",
753 .channels_min = 2,
754 .channels_max = 8,
755 .rates = HDMI_RATES,
756 .formats = I2S_FORMATS,
757 .sig_bits = 24,
758 },
759 .ops = &hdmi_codec_i2s_dai_ops,
760 .pcm_new = hdmi_codec_pcm_new,
761};
762
763static const struct snd_soc_dai_driver hdmi_spdif_dai = {
764 .name = "spdif-hifi",
765 .id = DAI_ID_SPDIF,
766 .probe = hdmi_dai_spdif_probe,
767 .remove = hdmi_codec_dai_remove,
768 .playback = {
769 .stream_name = "SPDIF Playback",
770 .channels_min = 2,
771 .channels_max = 2,
772 .rates = HDMI_RATES,
773 .formats = SPDIF_FORMATS,
774 },
775 .ops = &hdmi_codec_spdif_dai_ops,
776 .pcm_new = hdmi_codec_pcm_new,
777};
778
779static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
780 struct device_node *endpoint)
781{
782 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
783 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
784
785 if (hcp->hcd.ops->get_dai_id)
786 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
787
788 return ret;
789}
790
791static void hdmi_remove(struct snd_soc_component *component)
792{
793 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
794
795 if (hcp->hcd.ops->hook_plugged_cb)
796 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
797 hcp->hcd.data, NULL, NULL);
798}
799
800static const struct snd_soc_component_driver hdmi_driver = {
801 .remove = hdmi_remove,
802 .dapm_widgets = hdmi_widgets,
803 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
804 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
805 .idle_bias_on = 1,
806 .use_pmdown_time = 1,
807 .endianness = 1,
808 .non_legacy_dai_naming = 1,
809};
810
811static int hdmi_codec_probe(struct platform_device *pdev)
812{
813 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
814 struct snd_soc_dai_driver *daidrv;
815 struct device *dev = &pdev->dev;
816 struct hdmi_codec_priv *hcp;
817 int dai_count, i = 0;
818 int ret;
819
820 if (!hcd) {
821 dev_err(dev, "%s: No platform data\n", __func__);
822 return -EINVAL;
823 }
824
825 dai_count = hcd->i2s + hcd->spdif;
826 if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
827 !hcd->ops->audio_shutdown) {
828 dev_err(dev, "%s: Invalid parameters\n", __func__);
829 return -EINVAL;
830 }
831
832 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
833 if (!hcp)
834 return -ENOMEM;
835
836 hcp->hcd = *hcd;
837 mutex_init(&hcp->lock);
838
839 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
840 if (!daidrv)
841 return -ENOMEM;
842
843 if (hcd->i2s) {
844 daidrv[i] = hdmi_i2s_dai;
845 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
846 i++;
847 }
848
849 if (hcd->spdif)
850 daidrv[i] = hdmi_spdif_dai;
851
852 dev_set_drvdata(dev, hcp);
853
854 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
855 dai_count);
856 if (ret) {
857 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
858 __func__, ret);
859 return ret;
860 }
861 return 0;
862}
863
864static struct platform_driver hdmi_codec_driver = {
865 .driver = {
866 .name = HDMI_CODEC_DRV_NAME,
867 },
868 .probe = hdmi_codec_probe,
869};
870
871module_platform_driver(hdmi_codec_driver);
872
873MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
874MODULE_DESCRIPTION("HDMI Audio Codec Driver");
875MODULE_LICENSE("GPL");
876MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
1/*
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>
5 *
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.
9 *
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.
14 */
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> /* This is only to get MAX_ELD_BYTES */
27
28#define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
29
30struct hdmi_codec_channel_map_table {
31 unsigned char map; /* ALSA API channel map position */
32 unsigned long spk_mask; /* speaker position bit mask */
33};
34
35/*
36 * CEA speaker placement for HDMI 1.4:
37 *
38 * FL FLC FC FRC FR FRW
39 *
40 * LFE
41 *
42 * RL RLC RC RRC RR
43 *
44 * Speaker placement has to be extended to support HDMI 2.0
45 */
46enum 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 */
58};
59
60/*
61 * cea Speaker allocation structure
62 */
63struct hdmi_codec_cea_spk_alloc {
64 const int ca_id;
65 unsigned int n_ch;
66 unsigned long mask;
67};
68
69/* Channel maps stereo HDMI */
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/* Channel maps for multi-channel playbacks, up to 8 n_ch */
77static 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,
82 SNDRV_CHMAP_NA } },
83 { .channels = 4, /* CA_ID 0x02 */
84 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
85 SNDRV_CHMAP_FC } },
86 { .channels = 4, /* CA_ID 0x03 */
87 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
88 SNDRV_CHMAP_FC } },
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 } },
193 { }
194};
195
196/*
197 * hdmi_codec_channel_alloc: speaker configuration available for CEA
198 *
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().
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 /* 2.1 */
207 { .ca_id = 0x01, .n_ch = 4,
208 .mask = FL | FR | LFE},
209 /* Dolby Surround */
210 { .ca_id = 0x02, .n_ch = 4,
211 .mask = FL | FR | FC },
212 /* surround51 */
213 { .ca_id = 0x0b, .n_ch = 6,
214 .mask = FL | FR | LFE | FC | RL | RR},
215 /* surround40 */
216 { .ca_id = 0x08, .n_ch = 6,
217 .mask = FL | FR | RL | RR },
218 /* surround41 */
219 { .ca_id = 0x09, .n_ch = 6,
220 .mask = FL | FR | LFE | RL | RR },
221 /* surround50 */
222 { .ca_id = 0x0a, .n_ch = 6,
223 .mask = FL | FR | FC | RL | RR },
224 /* 6.1 */
225 { .ca_id = 0x0f, .n_ch = 8,
226 .mask = FL | FR | LFE | FC | RL | RR | RC },
227 /* surround71 */
228 { .ca_id = 0x13, .n_ch = 8,
229 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
230 /* others */
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 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
307 uinfo->count = FIELD_SIZEOF(struct hdmi_codec_priv, eld);
308
309 return 0;
310}
311
312static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
313 struct snd_ctl_elem_value *ucontrol)
314{
315 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
316 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
317
318 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
319
320 return 0;
321}
322
323static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
324{
325 int i;
326 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
327 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
328 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
329 };
330 unsigned long spk_mask = 0;
331
332 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
333 if (spk_alloc & (1 << i))
334 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
335 }
336
337 return spk_mask;
338}
339
340static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
341{
342 u8 spk_alloc;
343 unsigned long spk_mask;
344
345 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
346 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
347
348 /* Detect if only stereo supported, else return 8 channels mappings */
349 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
350 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
351 else
352 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
353}
354
355static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
356 unsigned char channels)
357{
358 int i;
359 u8 spk_alloc;
360 unsigned long spk_mask;
361 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
362
363 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
364 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
365
366 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
367 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
368 if (!spk_alloc && cap->ca_id == 0)
369 return i;
370 if (cap->n_ch != channels)
371 continue;
372 if (!(cap->mask == (spk_mask & cap->mask)))
373 continue;
374 return i;
375 }
376
377 return -EINVAL;
378}
379static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
380 struct snd_ctl_elem_value *ucontrol)
381{
382 unsigned const char *map;
383 unsigned int i;
384 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
385 struct hdmi_codec_priv *hcp = info->private_data;
386
387 map = info->chmap[hcp->chmap_idx].map;
388
389 for (i = 0; i < info->max_channels; i++) {
390 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
391 ucontrol->value.integer.value[i] = 0;
392 else
393 ucontrol->value.integer.value[i] = map[i];
394 }
395
396 return 0;
397}
398
399static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
400 struct snd_soc_dai *dai)
401{
402 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
403 int ret = 0;
404
405 mutex_lock(&hcp->current_stream_lock);
406 if (!hcp->current_stream) {
407 hcp->current_stream = substream;
408 } else if (hcp->current_stream != substream) {
409 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
410 ret = -EINVAL;
411 }
412 mutex_unlock(&hcp->current_stream_lock);
413
414 return ret;
415}
416
417static int hdmi_codec_startup(struct snd_pcm_substream *substream,
418 struct snd_soc_dai *dai)
419{
420 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
421 int ret = 0;
422
423 dev_dbg(dai->dev, "%s()\n", __func__);
424
425 ret = hdmi_codec_new_stream(substream, dai);
426 if (ret)
427 return ret;
428
429 if (hcp->hcd.ops->audio_startup) {
430 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
431 if (ret) {
432 mutex_lock(&hcp->current_stream_lock);
433 hcp->current_stream = NULL;
434 mutex_unlock(&hcp->current_stream_lock);
435 return ret;
436 }
437 }
438
439 if (hcp->hcd.ops->get_eld) {
440 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
441 hcp->eld, sizeof(hcp->eld));
442
443 if (!ret) {
444 ret = snd_pcm_hw_constraint_eld(substream->runtime,
445 hcp->eld);
446 if (ret)
447 return ret;
448 }
449 /* Select chmap supported */
450 hdmi_codec_eld_chmap(hcp);
451 }
452 return 0;
453}
454
455static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
456 struct snd_soc_dai *dai)
457{
458 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
459
460 dev_dbg(dai->dev, "%s()\n", __func__);
461
462 WARN_ON(hcp->current_stream != substream);
463
464 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
465 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
466
467 mutex_lock(&hcp->current_stream_lock);
468 hcp->current_stream = NULL;
469 mutex_unlock(&hcp->current_stream_lock);
470}
471
472static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
473 struct snd_pcm_hw_params *params,
474 struct snd_soc_dai *dai)
475{
476 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
477 struct hdmi_codec_params hp = {
478 .iec = {
479 .status = { 0 },
480 .subcode = { 0 },
481 .pad = 0,
482 .dig_subframe = { 0 },
483 }
484 };
485 int ret, idx;
486
487 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
488 params_width(params), params_rate(params),
489 params_channels(params));
490
491 if (params_width(params) > 24)
492 params->msbits = 24;
493
494 ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
495 sizeof(hp.iec.status));
496 if (ret < 0) {
497 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
498 ret);
499 return ret;
500 }
501
502 ret = hdmi_codec_new_stream(substream, dai);
503 if (ret)
504 return ret;
505
506 hdmi_audio_infoframe_init(&hp.cea);
507 hp.cea.channels = params_channels(params);
508 hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
509 hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
510 hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
511
512 /* Select a channel allocation that matches with ELD and pcm channels */
513 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
514 if (idx < 0) {
515 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
516 idx);
517 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
518 return idx;
519 }
520 hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
521 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
522
523 hp.sample_width = params_width(params);
524 hp.sample_rate = params_rate(params);
525 hp.channels = params_channels(params);
526
527 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
528 &hcp->daifmt[dai->id], &hp);
529}
530
531static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
532 unsigned int fmt)
533{
534 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
535 struct hdmi_codec_daifmt cf = { 0 };
536 int ret = 0;
537
538 dev_dbg(dai->dev, "%s()\n", __func__);
539
540 if (dai->id == DAI_ID_SPDIF) {
541 cf.fmt = HDMI_SPDIF;
542 } else {
543 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
544 case SND_SOC_DAIFMT_CBM_CFM:
545 cf.bit_clk_master = 1;
546 cf.frame_clk_master = 1;
547 break;
548 case SND_SOC_DAIFMT_CBS_CFM:
549 cf.frame_clk_master = 1;
550 break;
551 case SND_SOC_DAIFMT_CBM_CFS:
552 cf.bit_clk_master = 1;
553 break;
554 case SND_SOC_DAIFMT_CBS_CFS:
555 break;
556 default:
557 return -EINVAL;
558 }
559
560 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
561 case SND_SOC_DAIFMT_NB_NF:
562 break;
563 case SND_SOC_DAIFMT_NB_IF:
564 cf.frame_clk_inv = 1;
565 break;
566 case SND_SOC_DAIFMT_IB_NF:
567 cf.bit_clk_inv = 1;
568 break;
569 case SND_SOC_DAIFMT_IB_IF:
570 cf.frame_clk_inv = 1;
571 cf.bit_clk_inv = 1;
572 break;
573 }
574
575 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
576 case SND_SOC_DAIFMT_I2S:
577 cf.fmt = HDMI_I2S;
578 break;
579 case SND_SOC_DAIFMT_DSP_A:
580 cf.fmt = HDMI_DSP_A;
581 break;
582 case SND_SOC_DAIFMT_DSP_B:
583 cf.fmt = HDMI_DSP_B;
584 break;
585 case SND_SOC_DAIFMT_RIGHT_J:
586 cf.fmt = HDMI_RIGHT_J;
587 break;
588 case SND_SOC_DAIFMT_LEFT_J:
589 cf.fmt = HDMI_LEFT_J;
590 break;
591 case SND_SOC_DAIFMT_AC97:
592 cf.fmt = HDMI_AC97;
593 break;
594 default:
595 dev_err(dai->dev, "Invalid DAI interface format\n");
596 return -EINVAL;
597 }
598 }
599
600 hcp->daifmt[dai->id] = cf;
601
602 return ret;
603}
604
605static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
606{
607 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
608
609 dev_dbg(dai->dev, "%s()\n", __func__);
610
611 if (hcp->hcd.ops->digital_mute)
612 return hcp->hcd.ops->digital_mute(dai->dev->parent,
613 hcp->hcd.data, mute);
614
615 return 0;
616}
617
618static const struct snd_soc_dai_ops hdmi_dai_ops = {
619 .startup = hdmi_codec_startup,
620 .shutdown = hdmi_codec_shutdown,
621 .hw_params = hdmi_codec_hw_params,
622 .set_fmt = hdmi_codec_set_fmt,
623 .digital_mute = hdmi_codec_digital_mute,
624};
625
626
627#define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
628 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
629 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
630 SNDRV_PCM_RATE_192000)
631
632#define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
633 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
634 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
635 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
636
637/*
638 * This list is only for formats allowed on the I2S bus. So there is
639 * some formats listed that are not supported by HDMI interface. For
640 * instance allowing the 32-bit formats enables 24-precision with CPU
641 * DAIs that do not support 24-bit formats. If the extra formats cause
642 * problems, we should add the video side driver an option to disable
643 * them.
644 */
645#define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
646 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
647 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
648 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
649 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
650
651static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
652 struct snd_soc_dai *dai)
653{
654 struct snd_soc_dai_driver *drv = dai->driver;
655 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
656 struct snd_kcontrol *kctl;
657 struct snd_kcontrol_new hdmi_eld_ctl = {
658 .access = SNDRV_CTL_ELEM_ACCESS_READ |
659 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
660 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
661 .name = "ELD",
662 .info = hdmi_eld_ctl_info,
663 .get = hdmi_eld_ctl_get,
664 .device = rtd->pcm->device,
665 };
666 int ret;
667
668 dev_dbg(dai->dev, "%s()\n", __func__);
669
670 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
671 NULL, drv->playback.channels_max, 0,
672 &hcp->chmap_info);
673 if (ret < 0)
674 return ret;
675
676 /* override handlers */
677 hcp->chmap_info->private_data = hcp;
678 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
679
680 /* default chmap supported is stereo */
681 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
682 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
683
684 /* add ELD ctl with the device number corresponding to the PCM stream */
685 kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
686 if (!kctl)
687 return -ENOMEM;
688
689 return snd_ctl_add(rtd->card->snd_card, kctl);
690}
691
692static const struct snd_soc_dai_driver hdmi_i2s_dai = {
693 .name = "i2s-hifi",
694 .id = DAI_ID_I2S,
695 .playback = {
696 .stream_name = "I2S Playback",
697 .channels_min = 2,
698 .channels_max = 8,
699 .rates = HDMI_RATES,
700 .formats = I2S_FORMATS,
701 .sig_bits = 24,
702 },
703 .ops = &hdmi_dai_ops,
704 .pcm_new = hdmi_codec_pcm_new,
705};
706
707static const struct snd_soc_dai_driver hdmi_spdif_dai = {
708 .name = "spdif-hifi",
709 .id = DAI_ID_SPDIF,
710 .playback = {
711 .stream_name = "SPDIF Playback",
712 .channels_min = 2,
713 .channels_max = 2,
714 .rates = HDMI_RATES,
715 .formats = SPDIF_FORMATS,
716 },
717 .ops = &hdmi_dai_ops,
718 .pcm_new = hdmi_codec_pcm_new,
719};
720
721static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
722 struct device_node *endpoint)
723{
724 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
725 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
726
727 if (hcp->hcd.ops->get_dai_id)
728 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
729
730 return ret;
731}
732
733static const struct snd_soc_component_driver hdmi_driver = {
734 .dapm_widgets = hdmi_widgets,
735 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
736 .dapm_routes = hdmi_routes,
737 .num_dapm_routes = ARRAY_SIZE(hdmi_routes),
738 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
739 .idle_bias_on = 1,
740 .use_pmdown_time = 1,
741 .endianness = 1,
742 .non_legacy_dai_naming = 1,
743};
744
745static int hdmi_codec_probe(struct platform_device *pdev)
746{
747 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
748 struct device *dev = &pdev->dev;
749 struct hdmi_codec_priv *hcp;
750 int dai_count, i = 0;
751 int ret;
752
753 dev_dbg(dev, "%s()\n", __func__);
754
755 if (!hcd) {
756 dev_err(dev, "%s: No plalform data\n", __func__);
757 return -EINVAL;
758 }
759
760 dai_count = hcd->i2s + hcd->spdif;
761 if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
762 !hcd->ops->audio_shutdown) {
763 dev_err(dev, "%s: Invalid parameters\n", __func__);
764 return -EINVAL;
765 }
766
767 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
768 if (!hcp)
769 return -ENOMEM;
770
771 hcp->hcd = *hcd;
772 mutex_init(&hcp->current_stream_lock);
773
774 hcp->daidrv = devm_kzalloc(dev, dai_count * sizeof(*hcp->daidrv),
775 GFP_KERNEL);
776 if (!hcp->daidrv)
777 return -ENOMEM;
778
779 if (hcd->i2s) {
780 hcp->daidrv[i] = hdmi_i2s_dai;
781 hcp->daidrv[i].playback.channels_max =
782 hcd->max_i2s_channels;
783 i++;
784 }
785
786 if (hcd->spdif)
787 hcp->daidrv[i] = hdmi_spdif_dai;
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
797 dev_set_drvdata(dev, hcp);
798 return 0;
799}
800
801static struct platform_driver hdmi_codec_driver = {
802 .driver = {
803 .name = HDMI_CODEC_DRV_NAME,
804 },
805 .probe = hdmi_codec_probe,
806};
807
808module_platform_driver(hdmi_codec_driver);
809
810MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
811MODULE_DESCRIPTION("HDMI Audio Codec Driver");
812MODULE_LICENSE("GPL");
813MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);