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
23 struct hdmi_codec_channel_map_table {
24 unsigned char map; /* ALSA API channel map position */
25 };
26
27 /*
28 * CEA speaker placement for HDMI 1.4:
29 *
30 * FL FLC FC FRC FR FRW
31 *
32 * LFE
33 *
34 * RL RLC RC RRC RR
35 *
36 * Speaker placement has to be extended to support HDMI 2.0
37 */
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 */
50 };
51
52 /*
53 * cea Speaker allocation structure
54 */
55 struct hdmi_codec_cea_spk_alloc {
56 const int ca_id;
57 unsigned int n_ch;
58 unsigned long mask;
59 };
60
61 /* Channel maps stereo HDMI */
62 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
63 { .channels = 2,
64 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
65 { }
66 };
67
68 /* 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,
74 SNDRV_CHMAP_NA } },
75 { .channels = 4, /* CA_ID 0x02 */
76 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
77 SNDRV_CHMAP_FC } },
78 { .channels = 4, /* CA_ID 0x03 */
79 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
80 SNDRV_CHMAP_FC } },
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 } },
185 { }
186 };
187
188 /*
189 * hdmi_codec_channel_alloc: speaker configuration available for CEA
190 *
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().
194 */
195 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
196 { .ca_id = 0x00, .n_ch = 2,
197 .mask = FL | FR},
198 /* 2.1 */
199 { .ca_id = 0x01, .n_ch = 4,
200 .mask = FL | FR | LFE},
201 /* Dolby Surround */
202 { .ca_id = 0x02, .n_ch = 4,
203 .mask = FL | FR | FC },
204 /* surround51 */
205 { .ca_id = 0x0b, .n_ch = 6,
206 .mask = FL | FR | LFE | FC | RL | RR},
207 /* surround40 */
208 { .ca_id = 0x08, .n_ch = 6,
209 .mask = FL | FR | RL | RR },
210 /* surround41 */
211 { .ca_id = 0x09, .n_ch = 6,
212 .mask = FL | FR | LFE | RL | RR },
213 /* surround50 */
214 { .ca_id = 0x0a, .n_ch = 6,
215 .mask = FL | FR | FC | RL | RR },
216 /* 6.1 */
217 { .ca_id = 0x0f, .n_ch = 8,
218 .mask = FL | FR | LFE | FC | RL | RR | RC },
219 /* surround71 */
220 { .ca_id = 0x13, .n_ch = 8,
221 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
222 /* others */
223 { .ca_id = 0x03, .n_ch = 8,
224 .mask = FL | FR | LFE | FC },
225 { .ca_id = 0x04, .n_ch = 8,
226 .mask = FL | FR | RC},
227 { .ca_id = 0x05, .n_ch = 8,
228 .mask = FL | FR | LFE | RC },
229 { .ca_id = 0x06, .n_ch = 8,
230 .mask = FL | FR | FC | RC },
231 { .ca_id = 0x07, .n_ch = 8,
232 .mask = FL | FR | LFE | FC | RC },
233 { .ca_id = 0x0c, .n_ch = 8,
234 .mask = FL | FR | RC | RL | RR },
235 { .ca_id = 0x0d, .n_ch = 8,
236 .mask = FL | FR | LFE | RL | RR | RC },
237 { .ca_id = 0x0e, .n_ch = 8,
238 .mask = FL | FR | FC | RL | RR | RC },
239 { .ca_id = 0x10, .n_ch = 8,
240 .mask = FL | FR | RL | RR | RLC | RRC },
241 { .ca_id = 0x11, .n_ch = 8,
242 .mask = FL | FR | LFE | RL | RR | RLC | RRC },
243 { .ca_id = 0x12, .n_ch = 8,
244 .mask = FL | FR | FC | RL | RR | RLC | RRC },
245 { .ca_id = 0x14, .n_ch = 8,
246 .mask = FL | FR | FLC | FRC },
247 { .ca_id = 0x15, .n_ch = 8,
248 .mask = FL | FR | LFE | FLC | FRC },
249 { .ca_id = 0x16, .n_ch = 8,
250 .mask = FL | FR | FC | FLC | FRC },
251 { .ca_id = 0x17, .n_ch = 8,
252 .mask = FL | FR | LFE | FC | FLC | FRC },
253 { .ca_id = 0x18, .n_ch = 8,
254 .mask = FL | FR | RC | FLC | FRC },
255 { .ca_id = 0x19, .n_ch = 8,
256 .mask = FL | FR | LFE | RC | FLC | FRC },
257 { .ca_id = 0x1a, .n_ch = 8,
258 .mask = FL | FR | RC | FC | FLC | FRC },
259 { .ca_id = 0x1b, .n_ch = 8,
260 .mask = FL | FR | LFE | RC | FC | FLC | FRC },
261 { .ca_id = 0x1c, .n_ch = 8,
262 .mask = FL | FR | RL | RR | FLC | FRC },
263 { .ca_id = 0x1d, .n_ch = 8,
264 .mask = FL | FR | LFE | RL | RR | FLC | FRC },
265 { .ca_id = 0x1e, .n_ch = 8,
266 .mask = FL | FR | FC | RL | RR | FLC | FRC },
267 { .ca_id = 0x1f, .n_ch = 8,
268 .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
269 };
270
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;
276 struct mutex lock;
277 bool busy;
278 bool eld_bypass;
279 struct snd_soc_jack *jack;
280 unsigned int jack_status;
281 u8 iec_status[24];
282 struct snd_pcm_substream *substream;
283 };
284
285 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
286 SND_SOC_DAPM_OUTPUT("TX"),
287 SND_SOC_DAPM_OUTPUT("RX"),
288 };
289
290 enum {
291 DAI_ID_I2S = 0,
292 DAI_ID_SPDIF,
293 };
294
hdmi_eld_ctl_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)295 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
296 struct snd_ctl_elem_info *uinfo)
297 {
298 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
299 uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
300
301 return 0;
302 }
303
hdmi_eld_ctl_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)304 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
305 struct snd_ctl_elem_value *ucontrol)
306 {
307 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
308 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
309
310 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
311
312 return 0;
313 }
314
hdmi_codec_spk_mask_from_alloc(int spk_alloc)315 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
316 {
317 int i;
318 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
319 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
320 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
321 };
322 unsigned long spk_mask = 0;
323
324 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
325 if (spk_alloc & (1 << i))
326 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
327 }
328
329 return spk_mask;
330 }
331
hdmi_codec_eld_chmap(struct hdmi_codec_priv * hcp)332 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
333 {
334 u8 spk_alloc;
335 unsigned long spk_mask;
336
337 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
338 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
339
340 /* Detect if only stereo supported, else return 8 channels mappings */
341 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
342 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
343 else
344 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
345 }
346
hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv * hcp,unsigned char channels)347 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
348 unsigned char channels)
349 {
350 int i;
351 u8 spk_alloc;
352 unsigned long spk_mask;
353 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
354
355 if (hcp->eld_bypass)
356 return 0;
357
358 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
359 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
360
361 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
362 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
363 if (!spk_alloc && cap->ca_id == 0)
364 return i;
365 if (cap->n_ch != channels)
366 continue;
367 if (!(cap->mask == (spk_mask & cap->mask)))
368 continue;
369 return i;
370 }
371
372 return -EINVAL;
373 }
hdmi_codec_chmap_ctl_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)374 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
375 struct snd_ctl_elem_value *ucontrol)
376 {
377 unsigned const char *map;
378 unsigned int i;
379 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
380 struct hdmi_codec_priv *hcp = info->private_data;
381
382 map = info->chmap[hcp->chmap_idx].map;
383
384 for (i = 0; i < info->max_channels; i++) {
385 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
386 ucontrol->value.integer.value[i] = 0;
387 else
388 ucontrol->value.integer.value[i] = map[i];
389 }
390
391 return 0;
392 }
393
hdmi_codec_iec958_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)394 static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol,
395 struct snd_ctl_elem_info *uinfo)
396 {
397 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
398 uinfo->count = 1;
399 return 0;
400 }
401
hdmi_codec_iec958_default_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)402 static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol,
403 struct snd_ctl_elem_value *ucontrol)
404 {
405 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
406 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
407
408 memcpy(ucontrol->value.iec958.status, hcp->iec_status,
409 sizeof(hcp->iec_status));
410
411 return 0;
412 }
413
hdmi_codec_iec958_default_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)414 static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol,
415 struct snd_ctl_elem_value *ucontrol)
416 {
417 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
418 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
419
420 memcpy(hcp->iec_status, ucontrol->value.iec958.status,
421 sizeof(hcp->iec_status));
422
423 return 0;
424 }
425
hdmi_codec_iec958_mask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)426 static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol,
427 struct snd_ctl_elem_value *ucontrol)
428 {
429 memset(ucontrol->value.iec958.status, 0xff,
430 sizeof_field(struct hdmi_codec_priv, iec_status));
431
432 return 0;
433 }
434
hdmi_codec_eld_bypass_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)435 static int hdmi_codec_eld_bypass_get(struct snd_kcontrol *kcontrol,
436 struct snd_ctl_elem_value *ucontrol)
437 {
438 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
439 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
440
441 ucontrol->value.integer.value[0] = hcp->eld_bypass;
442
443 return 0;
444 }
445
hdmi_codec_eld_bypass_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)446 static int hdmi_codec_eld_bypass_put(struct snd_kcontrol *kcontrol,
447 struct snd_ctl_elem_value *ucontrol)
448 {
449 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
450 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
451
452 if (hcp->eld_bypass == ucontrol->value.integer.value[0])
453 return 0;
454
455 hcp->eld_bypass = ucontrol->value.integer.value[0];
456
457 return 1;
458 }
459
hdmi_codec_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)460 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
461 struct snd_soc_dai *dai)
462 {
463 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
464 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
465 int ret = 0;
466
467 mutex_lock(&hcp->lock);
468 if (hcp->busy) {
469 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
470 mutex_unlock(&hcp->lock);
471 return -EINVAL;
472 }
473
474 if (hcp->hcd.ops->audio_startup) {
475 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
476 if (ret)
477 goto err;
478 }
479
480 if (tx && !hcp->eld_bypass && hcp->hcd.ops->get_eld) {
481 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
482 hcp->eld, sizeof(hcp->eld));
483 if (ret)
484 goto err;
485
486 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
487 if (ret)
488 goto err;
489
490 /* Select chmap supported */
491 hdmi_codec_eld_chmap(hcp);
492 }
493
494 hcp->busy = true;
495 hcp->substream = substream;
496
497 err:
498 mutex_unlock(&hcp->lock);
499 return ret;
500 }
501
hdmi_codec_shutdown(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)502 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
503 struct snd_soc_dai *dai)
504 {
505 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
506
507 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
508 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
509
510 mutex_lock(&hcp->lock);
511 hcp->substream = NULL;
512 hcp->busy = false;
513 mutex_unlock(&hcp->lock);
514 }
515
hdmi_codec_fill_codec_params(struct snd_soc_dai * dai,unsigned int sample_width,unsigned int sample_rate,unsigned int channels,struct hdmi_codec_params * hp)516 static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai,
517 unsigned int sample_width,
518 unsigned int sample_rate,
519 unsigned int channels,
520 struct hdmi_codec_params *hp)
521 {
522 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
523 int idx;
524
525 /* Select a channel allocation that matches with ELD and pcm channels */
526 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, channels);
527 if (idx < 0) {
528 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
529 idx);
530 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
531 return idx;
532 }
533
534 memset(hp, 0, sizeof(*hp));
535
536 hdmi_audio_infoframe_init(&hp->cea);
537 hp->cea.channels = channels;
538 hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
539 hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
540 hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
541 hp->cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
542
543 hp->sample_width = sample_width;
544 hp->sample_rate = sample_rate;
545 hp->channels = channels;
546
547 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
548
549 return 0;
550 }
551
hdmi_codec_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)552 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
553 struct snd_pcm_hw_params *params,
554 struct snd_soc_dai *dai)
555 {
556 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
557 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
558 struct hdmi_codec_params hp = {
559 .iec = {
560 .status = { 0 },
561 .subcode = { 0 },
562 .pad = 0,
563 .dig_subframe = { 0 },
564 }
565 };
566 int ret;
567
568 if (!hcp->hcd.ops->hw_params)
569 return 0;
570
571 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
572 params_width(params), params_rate(params),
573 params_channels(params));
574
575 ret = hdmi_codec_fill_codec_params(dai,
576 params_width(params),
577 params_rate(params),
578 params_channels(params),
579 &hp);
580 if (ret < 0)
581 return ret;
582
583 memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
584 ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status,
585 sizeof(hp.iec.status));
586 if (ret < 0) {
587 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
588 ret);
589 return ret;
590 }
591
592 cf->bit_fmt = params_format(params);
593 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
594 cf, &hp);
595 }
596
hdmi_codec_prepare(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)597 static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
598 struct snd_soc_dai *dai)
599 {
600 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
601 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
602 struct snd_pcm_runtime *runtime = substream->runtime;
603 unsigned int channels = runtime->channels;
604 unsigned int width = snd_pcm_format_width(runtime->format);
605 unsigned int rate = runtime->rate;
606 struct hdmi_codec_params hp;
607 int ret;
608
609 if (!hcp->hcd.ops->prepare)
610 return 0;
611
612 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
613 width, rate, channels);
614
615 ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &hp);
616 if (ret < 0)
617 return ret;
618
619 memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
620 ret = snd_pcm_fill_iec958_consumer(runtime, hp.iec.status,
621 sizeof(hp.iec.status));
622 if (ret < 0) {
623 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
624 ret);
625 return ret;
626 }
627
628 cf->bit_fmt = runtime->format;
629 return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data,
630 cf, &hp);
631 }
632
hdmi_codec_i2s_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)633 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
634 unsigned int fmt)
635 {
636 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
637
638 /* Reset daifmt */
639 memset(cf, 0, sizeof(*cf));
640
641 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
642 case SND_SOC_DAIFMT_CBM_CFM:
643 cf->bit_clk_master = 1;
644 cf->frame_clk_master = 1;
645 break;
646 case SND_SOC_DAIFMT_CBS_CFM:
647 cf->frame_clk_master = 1;
648 break;
649 case SND_SOC_DAIFMT_CBM_CFS:
650 cf->bit_clk_master = 1;
651 break;
652 case SND_SOC_DAIFMT_CBS_CFS:
653 break;
654 default:
655 return -EINVAL;
656 }
657
658 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
659 case SND_SOC_DAIFMT_NB_NF:
660 break;
661 case SND_SOC_DAIFMT_NB_IF:
662 cf->frame_clk_inv = 1;
663 break;
664 case SND_SOC_DAIFMT_IB_NF:
665 cf->bit_clk_inv = 1;
666 break;
667 case SND_SOC_DAIFMT_IB_IF:
668 cf->frame_clk_inv = 1;
669 cf->bit_clk_inv = 1;
670 break;
671 }
672
673 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
674 case SND_SOC_DAIFMT_I2S:
675 cf->fmt = HDMI_I2S;
676 break;
677 case SND_SOC_DAIFMT_DSP_A:
678 cf->fmt = HDMI_DSP_A;
679 break;
680 case SND_SOC_DAIFMT_DSP_B:
681 cf->fmt = HDMI_DSP_B;
682 break;
683 case SND_SOC_DAIFMT_RIGHT_J:
684 cf->fmt = HDMI_RIGHT_J;
685 break;
686 case SND_SOC_DAIFMT_LEFT_J:
687 cf->fmt = HDMI_LEFT_J;
688 break;
689 case SND_SOC_DAIFMT_AC97:
690 cf->fmt = HDMI_AC97;
691 break;
692 default:
693 dev_err(dai->dev, "Invalid DAI interface format\n");
694 return -EINVAL;
695 }
696
697 return 0;
698 }
699
hdmi_codec_mute(struct snd_soc_dai * dai,int mute,int direction)700 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
701 {
702 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
703
704 /*
705 * ignore if direction was CAPTURE
706 * and it had .no_capture_mute flag
707 * see
708 * snd_soc_dai_digital_mute()
709 */
710 if (hcp->hcd.ops->mute_stream &&
711 (direction == SNDRV_PCM_STREAM_PLAYBACK ||
712 !hcp->hcd.ops->no_capture_mute))
713 return hcp->hcd.ops->mute_stream(dai->dev->parent,
714 hcp->hcd.data,
715 mute, direction);
716
717 return -ENOTSUPP;
718 }
719
720 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
721 .startup = hdmi_codec_startup,
722 .shutdown = hdmi_codec_shutdown,
723 .hw_params = hdmi_codec_hw_params,
724 .prepare = hdmi_codec_prepare,
725 .set_fmt = hdmi_codec_i2s_set_fmt,
726 .mute_stream = hdmi_codec_mute,
727 };
728
729 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
730 .startup = hdmi_codec_startup,
731 .shutdown = hdmi_codec_shutdown,
732 .hw_params = hdmi_codec_hw_params,
733 .mute_stream = hdmi_codec_mute,
734 };
735
736 #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
737 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
738 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
739 SNDRV_PCM_RATE_192000)
740
741 #define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
742 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
743 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
744 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
745
746 /*
747 * This list is only for formats allowed on the I2S bus. So there is
748 * some formats listed that are not supported by HDMI interface. For
749 * instance allowing the 32-bit formats enables 24-precision with CPU
750 * DAIs that do not support 24-bit formats. If the extra formats cause
751 * problems, we should add the video side driver an option to disable
752 * them.
753 */
754 #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
755 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
756 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
757 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
758 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |\
759 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
760
761 static struct snd_kcontrol_new hdmi_codec_controls[] = {
762 {
763 .access = SNDRV_CTL_ELEM_ACCESS_READ,
764 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
765 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
766 .info = hdmi_codec_iec958_info,
767 .get = hdmi_codec_iec958_mask_get,
768 },
769 {
770 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
771 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
772 .info = hdmi_codec_iec958_info,
773 .get = hdmi_codec_iec958_default_get,
774 .put = hdmi_codec_iec958_default_put,
775 },
776 {
777 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
778 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
779 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
780 .name = "ELD",
781 .info = hdmi_eld_ctl_info,
782 .get = hdmi_eld_ctl_get,
783 },
784 SOC_SINGLE_BOOL_EXT("ELD Bypass Switch", 0,
785 hdmi_codec_eld_bypass_get, hdmi_codec_eld_bypass_put),
786 };
787
hdmi_codec_pcm_new(struct snd_soc_pcm_runtime * rtd,struct snd_soc_dai * dai)788 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
789 struct snd_soc_dai *dai)
790 {
791 struct snd_soc_dai_driver *drv = dai->driver;
792 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
793 unsigned int i;
794 int ret;
795
796 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
797 NULL, drv->playback.channels_max, 0,
798 &hcp->chmap_info);
799 if (ret < 0)
800 return ret;
801
802 /* override handlers */
803 hcp->chmap_info->private_data = hcp;
804 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
805
806 /* default chmap supported is stereo */
807 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
808 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
809
810 for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
811 struct snd_kcontrol *kctl;
812
813 /* add ELD ctl with the device number corresponding to the PCM stream */
814 kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
815 if (!kctl)
816 return -ENOMEM;
817
818 kctl->id.device = rtd->pcm->device;
819 ret = snd_ctl_add(rtd->card->snd_card, kctl);
820 if (ret < 0)
821 return ret;
822 }
823
824 return 0;
825 }
826
hdmi_dai_probe(struct snd_soc_dai * dai)827 static int hdmi_dai_probe(struct snd_soc_dai *dai)
828 {
829 struct snd_soc_dapm_context *dapm;
830 struct hdmi_codec_daifmt *daifmt;
831 struct snd_soc_dapm_route route[] = {
832 {
833 .sink = "TX",
834 .source = dai->driver->playback.stream_name,
835 },
836 {
837 .sink = dai->driver->capture.stream_name,
838 .source = "RX",
839 },
840 };
841 int ret;
842
843 dapm = snd_soc_component_get_dapm(dai->component);
844 ret = snd_soc_dapm_add_routes(dapm, route, 2);
845 if (ret)
846 return ret;
847
848 daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
849 if (!daifmt)
850 return -ENOMEM;
851
852 dai->playback_dma_data = daifmt;
853 return 0;
854 }
855
hdmi_codec_jack_report(struct hdmi_codec_priv * hcp,unsigned int jack_status)856 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
857 unsigned int jack_status)
858 {
859 if (hcp->jack && jack_status != hcp->jack_status) {
860 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
861 hcp->jack_status = jack_status;
862 }
863 }
864
plugged_cb(struct device * dev,bool plugged)865 static void plugged_cb(struct device *dev, bool plugged)
866 {
867 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
868
869 if (plugged) {
870 if (!hcp->eld_bypass && hcp->hcd.ops->get_eld) {
871 hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
872 hcp->eld, sizeof(hcp->eld));
873 }
874 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
875 } else {
876 hdmi_codec_jack_report(hcp, 0);
877 memset(hcp->eld, 0, sizeof(hcp->eld));
878 }
879
880 mutex_lock(&hcp->lock);
881 if (hcp->substream) {
882 /*
883 * Workaround for HDMIIN and HDMIOUT plug-{in,out} when streaming.
884 *
885 * Actually, we should do stop stream both for HDMI_{OUT,IN} on
886 * plug-{out,in} event. but for better experience and depop stream,
887 * we optimize as follows:
888 *
889 * a) Do stop stream for HDMIIN on plug-out when streaming.
890 * because HDMIIN work as SLAVE mode, CLK lost after HDMI cable
891 * plugged out which will make stream stuck until ALSA timeout(10s).
892 * so, for better experience, we should stop stream at the moment.
893 *
894 * b) Do stop stream for HDMIOUT on plug-in when streaming.
895 * because HDMIOUT work as MASTER mode, there is no clk-issue like
896 * HDMIIN, but, on HDR situation, HDMI will be reconfigured which
897 * make HDMI audio configure lost, especially for NLPCM/HBR bitstream
898 * which require IEC937 packet alignment, so, for this situation,
899 * we stop stream to notify user to re-open and configure sound card
900 * and then go on streaming.
901 */
902 int stream = hcp->substream->stream;
903
904 if (stream == SNDRV_PCM_STREAM_PLAYBACK && plugged)
905 snd_pcm_stop(hcp->substream, SNDRV_PCM_STATE_SETUP);
906 else if (stream == SNDRV_PCM_STREAM_CAPTURE && !plugged)
907 snd_pcm_stop(hcp->substream, SNDRV_PCM_STATE_DISCONNECTED);
908
909 dev_dbg(dev, "stream[%d]: %s\n", stream, plugged ? "plug in" : "plug out");
910 }
911 mutex_unlock(&hcp->lock);
912 }
913
hdmi_codec_set_jack(struct snd_soc_component * component,struct snd_soc_jack * jack,void * data)914 static int hdmi_codec_set_jack(struct snd_soc_component *component,
915 struct snd_soc_jack *jack,
916 void *data)
917 {
918 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
919 int ret = -ENOTSUPP;
920
921 if (hcp->hcd.ops->hook_plugged_cb) {
922 hcp->jack = jack;
923 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
924 hcp->hcd.data,
925 plugged_cb,
926 component->dev);
927 if (ret)
928 hcp->jack = NULL;
929 }
930 return ret;
931 }
932
hdmi_dai_spdif_probe(struct snd_soc_dai * dai)933 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
934 {
935 struct hdmi_codec_daifmt *cf;
936 int ret;
937
938 ret = hdmi_dai_probe(dai);
939 if (ret)
940 return ret;
941
942 cf = dai->playback_dma_data;
943 cf->fmt = HDMI_SPDIF;
944
945 return 0;
946 }
947
hdmi_codec_dai_remove(struct snd_soc_dai * dai)948 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
949 {
950 kfree(dai->playback_dma_data);
951 return 0;
952 }
953
954 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
955 .name = "i2s-hifi",
956 .id = DAI_ID_I2S,
957 .probe = hdmi_dai_probe,
958 .remove = hdmi_codec_dai_remove,
959 .playback = {
960 .stream_name = "I2S Playback",
961 .channels_min = 2,
962 .channels_max = 8,
963 .rates = HDMI_RATES,
964 .formats = I2S_FORMATS,
965 .sig_bits = 24,
966 },
967 .capture = {
968 .stream_name = "Capture",
969 .channels_min = 2,
970 .channels_max = 8,
971 .rates = HDMI_RATES,
972 .formats = I2S_FORMATS,
973 .sig_bits = 24,
974 },
975 .ops = &hdmi_codec_i2s_dai_ops,
976 .pcm_new = hdmi_codec_pcm_new,
977 };
978
979 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
980 .name = "spdif-hifi",
981 .id = DAI_ID_SPDIF,
982 .probe = hdmi_dai_spdif_probe,
983 .remove = hdmi_codec_dai_remove,
984 .playback = {
985 .stream_name = "SPDIF Playback",
986 .channels_min = 2,
987 .channels_max = 2,
988 .rates = HDMI_RATES,
989 .formats = SPDIF_FORMATS,
990 },
991 .capture = {
992 .stream_name = "Capture",
993 .channels_min = 2,
994 .channels_max = 2,
995 .rates = HDMI_RATES,
996 .formats = SPDIF_FORMATS,
997 },
998 .ops = &hdmi_codec_spdif_dai_ops,
999 .pcm_new = hdmi_codec_pcm_new,
1000 };
1001
hdmi_of_xlate_dai_id(struct snd_soc_component * component,struct device_node * endpoint)1002 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
1003 struct device_node *endpoint)
1004 {
1005 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
1006 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
1007
1008 if (hcp->hcd.ops->get_dai_id)
1009 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
1010
1011 return ret;
1012 }
1013
hdmi_remove(struct snd_soc_component * component)1014 static void hdmi_remove(struct snd_soc_component *component)
1015 {
1016 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
1017
1018 if (hcp->hcd.ops->hook_plugged_cb)
1019 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
1020 hcp->hcd.data, NULL, NULL);
1021 }
1022
1023 static const struct snd_soc_component_driver hdmi_driver = {
1024 .remove = hdmi_remove,
1025 .dapm_widgets = hdmi_widgets,
1026 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
1027 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
1028 .idle_bias_on = 1,
1029 .use_pmdown_time = 1,
1030 .endianness = 1,
1031 .non_legacy_dai_naming = 1,
1032 .set_jack = hdmi_codec_set_jack,
1033 };
1034
hdmi_codec_probe(struct platform_device * pdev)1035 static int hdmi_codec_probe(struct platform_device *pdev)
1036 {
1037 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
1038 struct snd_soc_dai_driver *daidrv;
1039 struct device *dev = &pdev->dev;
1040 struct hdmi_codec_priv *hcp;
1041 int dai_count, i = 0;
1042 int ret;
1043
1044 if (!hcd) {
1045 dev_err(dev, "%s: No platform data\n", __func__);
1046 return -EINVAL;
1047 }
1048
1049 dai_count = hcd->i2s + hcd->spdif;
1050 if (dai_count < 1 || !hcd->ops ||
1051 (!hcd->ops->hw_params && !hcd->ops->prepare) ||
1052 !hcd->ops->audio_shutdown) {
1053 dev_err(dev, "%s: Invalid parameters\n", __func__);
1054 return -EINVAL;
1055 }
1056
1057 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
1058 if (!hcp)
1059 return -ENOMEM;
1060
1061 hcp->hcd = *hcd;
1062 mutex_init(&hcp->lock);
1063
1064 ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status,
1065 sizeof(hcp->iec_status));
1066 if (ret < 0)
1067 return ret;
1068
1069 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
1070 if (!daidrv)
1071 return -ENOMEM;
1072
1073 if (hcd->i2s) {
1074 daidrv[i] = hdmi_i2s_dai;
1075 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
1076 i++;
1077 }
1078
1079 if (hcd->spdif)
1080 daidrv[i] = hdmi_spdif_dai;
1081
1082 dev_set_drvdata(dev, hcp);
1083
1084 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
1085 dai_count);
1086 if (ret) {
1087 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
1088 __func__, ret);
1089 return ret;
1090 }
1091 return 0;
1092 }
1093
1094 static struct platform_driver hdmi_codec_driver = {
1095 .driver = {
1096 .name = HDMI_CODEC_DRV_NAME,
1097 },
1098 .probe = hdmi_codec_probe,
1099 };
1100
1101 module_platform_driver(hdmi_codec_driver);
1102
1103 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
1104 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
1105 MODULE_LICENSE("GPL");
1106 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
1107