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 /*
24 * CEA speaker placement for HDMI 1.4:
25 *
26 * FL FLC FC FRC FR FRW
27 *
28 * LFE
29 *
30 * RL RLC RC RRC RR
31 *
32 * Speaker placement has to be extended to support HDMI 2.0
33 */
34 enum hdmi_codec_cea_spk_placement {
35 FL = BIT(0), /* Front Left */
36 FC = BIT(1), /* Front Center */
37 FR = BIT(2), /* Front Right */
38 FLC = BIT(3), /* Front Left Center */
39 FRC = BIT(4), /* Front Right Center */
40 RL = BIT(5), /* Rear Left */
41 RC = BIT(6), /* Rear Center */
42 RR = BIT(7), /* Rear Right */
43 RLC = BIT(8), /* Rear Left Center */
44 RRC = BIT(9), /* Rear Right Center */
45 LFE = BIT(10), /* Low Frequency Effect */
46 };
47
48 /*
49 * cea Speaker allocation structure
50 */
51 struct hdmi_codec_cea_spk_alloc {
52 const int ca_id;
53 unsigned int n_ch;
54 unsigned long mask;
55 };
56
57 /* Channel maps stereo HDMI */
58 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
59 { .channels = 2,
60 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
61 { }
62 };
63
64 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
65 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
66 { .channels = 2, /* CA_ID 0x00 */
67 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
68 { .channels = 4, /* CA_ID 0x01 */
69 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
70 SNDRV_CHMAP_NA } },
71 { .channels = 4, /* CA_ID 0x02 */
72 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
73 SNDRV_CHMAP_FC } },
74 { .channels = 4, /* CA_ID 0x03 */
75 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
76 SNDRV_CHMAP_FC } },
77 { .channels = 6, /* CA_ID 0x04 */
78 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
79 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
80 { .channels = 6, /* CA_ID 0x05 */
81 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
82 SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
83 { .channels = 6, /* CA_ID 0x06 */
84 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
85 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
86 { .channels = 6, /* CA_ID 0x07 */
87 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
88 SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
89 { .channels = 6, /* CA_ID 0x08 */
90 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
91 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
92 { .channels = 6, /* CA_ID 0x09 */
93 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
94 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
95 { .channels = 6, /* CA_ID 0x0A */
96 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
97 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
98 { .channels = 6, /* CA_ID 0x0B */
99 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
100 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
101 { .channels = 8, /* CA_ID 0x0C */
102 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
103 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
104 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
105 { .channels = 8, /* CA_ID 0x0D */
106 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
107 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
108 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
109 { .channels = 8, /* CA_ID 0x0E */
110 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
111 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
112 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
113 { .channels = 8, /* CA_ID 0x0F */
114 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
115 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
116 SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
117 { .channels = 8, /* CA_ID 0x10 */
118 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
119 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
120 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
121 { .channels = 8, /* CA_ID 0x11 */
122 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
123 SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
124 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
125 { .channels = 8, /* CA_ID 0x12 */
126 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
127 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
128 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
129 { .channels = 8, /* CA_ID 0x13 */
130 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
131 SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
132 SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
133 { .channels = 8, /* CA_ID 0x14 */
134 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
135 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
136 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
137 { .channels = 8, /* CA_ID 0x15 */
138 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
139 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
140 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
141 { .channels = 8, /* CA_ID 0x16 */
142 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
143 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
144 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
145 { .channels = 8, /* CA_ID 0x17 */
146 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
147 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
148 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
149 { .channels = 8, /* CA_ID 0x18 */
150 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
151 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
152 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
153 { .channels = 8, /* CA_ID 0x19 */
154 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
155 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
156 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
157 { .channels = 8, /* CA_ID 0x1A */
158 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
159 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
160 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
161 { .channels = 8, /* CA_ID 0x1B */
162 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
163 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
164 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
165 { .channels = 8, /* CA_ID 0x1C */
166 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
167 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
168 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
169 { .channels = 8, /* CA_ID 0x1D */
170 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
171 SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
172 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
173 { .channels = 8, /* CA_ID 0x1E */
174 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
175 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
176 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
177 { .channels = 8, /* CA_ID 0x1F */
178 .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
179 SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
180 SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
181 { }
182 };
183
184 /*
185 * hdmi_codec_channel_alloc: speaker configuration available for CEA
186 *
187 * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
188 * The preceding ones have better chances to be selected by
189 * hdmi_codec_get_ch_alloc_table_idx().
190 */
191 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
192 { .ca_id = 0x00, .n_ch = 2,
193 .mask = FL | FR},
194 /* 2.1 */
195 { .ca_id = 0x01, .n_ch = 4,
196 .mask = FL | FR | LFE},
197 /* Dolby Surround */
198 { .ca_id = 0x02, .n_ch = 4,
199 .mask = FL | FR | FC },
200 /* surround51 */
201 { .ca_id = 0x0b, .n_ch = 6,
202 .mask = FL | FR | LFE | FC | RL | RR},
203 /* surround40 */
204 { .ca_id = 0x08, .n_ch = 6,
205 .mask = FL | FR | RL | RR },
206 /* surround41 */
207 { .ca_id = 0x09, .n_ch = 6,
208 .mask = FL | FR | LFE | RL | RR },
209 /* surround50 */
210 { .ca_id = 0x0a, .n_ch = 6,
211 .mask = FL | FR | FC | RL | RR },
212 /* 6.1 */
213 { .ca_id = 0x0f, .n_ch = 8,
214 .mask = FL | FR | LFE | FC | RL | RR | RC },
215 /* surround71 */
216 { .ca_id = 0x13, .n_ch = 8,
217 .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
218 /* others */
219 { .ca_id = 0x03, .n_ch = 8,
220 .mask = FL | FR | LFE | FC },
221 { .ca_id = 0x04, .n_ch = 8,
222 .mask = FL | FR | RC},
223 { .ca_id = 0x05, .n_ch = 8,
224 .mask = FL | FR | LFE | RC },
225 { .ca_id = 0x06, .n_ch = 8,
226 .mask = FL | FR | FC | RC },
227 { .ca_id = 0x07, .n_ch = 8,
228 .mask = FL | FR | LFE | FC | RC },
229 { .ca_id = 0x0c, .n_ch = 8,
230 .mask = FL | FR | RC | RL | RR },
231 { .ca_id = 0x0d, .n_ch = 8,
232 .mask = FL | FR | LFE | RL | RR | RC },
233 { .ca_id = 0x0e, .n_ch = 8,
234 .mask = FL | FR | FC | RL | RR | RC },
235 { .ca_id = 0x10, .n_ch = 8,
236 .mask = FL | FR | RL | RR | RLC | RRC },
237 { .ca_id = 0x11, .n_ch = 8,
238 .mask = FL | FR | LFE | RL | RR | RLC | RRC },
239 { .ca_id = 0x12, .n_ch = 8,
240 .mask = FL | FR | FC | RL | RR | RLC | RRC },
241 { .ca_id = 0x14, .n_ch = 8,
242 .mask = FL | FR | FLC | FRC },
243 { .ca_id = 0x15, .n_ch = 8,
244 .mask = FL | FR | LFE | FLC | FRC },
245 { .ca_id = 0x16, .n_ch = 8,
246 .mask = FL | FR | FC | FLC | FRC },
247 { .ca_id = 0x17, .n_ch = 8,
248 .mask = FL | FR | LFE | FC | FLC | FRC },
249 { .ca_id = 0x18, .n_ch = 8,
250 .mask = FL | FR | RC | FLC | FRC },
251 { .ca_id = 0x19, .n_ch = 8,
252 .mask = FL | FR | LFE | RC | FLC | FRC },
253 { .ca_id = 0x1a, .n_ch = 8,
254 .mask = FL | FR | RC | FC | FLC | FRC },
255 { .ca_id = 0x1b, .n_ch = 8,
256 .mask = FL | FR | LFE | RC | FC | FLC | FRC },
257 { .ca_id = 0x1c, .n_ch = 8,
258 .mask = FL | FR | RL | RR | FLC | FRC },
259 { .ca_id = 0x1d, .n_ch = 8,
260 .mask = FL | FR | LFE | RL | RR | FLC | FRC },
261 { .ca_id = 0x1e, .n_ch = 8,
262 .mask = FL | FR | FC | RL | RR | FLC | FRC },
263 { .ca_id = 0x1f, .n_ch = 8,
264 .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
265 };
266
267 struct hdmi_codec_priv {
268 struct hdmi_codec_pdata hcd;
269 uint8_t eld[MAX_ELD_BYTES];
270 struct snd_pcm_chmap *chmap_info;
271 unsigned int chmap_idx;
272 struct mutex lock;
273 bool busy;
274 struct snd_soc_jack *jack;
275 unsigned int jack_status;
276 u8 iec_status[AES_IEC958_STATUS_SIZE];
277 };
278
279 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
280 SND_SOC_DAPM_OUTPUT("TX"),
281 SND_SOC_DAPM_OUTPUT("RX"),
282 };
283
284 enum {
285 DAI_ID_I2S = 0,
286 DAI_ID_SPDIF,
287 };
288
hdmi_eld_ctl_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)289 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
290 struct snd_ctl_elem_info *uinfo)
291 {
292 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
293 uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
294
295 return 0;
296 }
297
hdmi_eld_ctl_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)298 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
299 struct snd_ctl_elem_value *ucontrol)
300 {
301 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
302 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
303
304 memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
305
306 return 0;
307 }
308
hdmi_codec_spk_mask_from_alloc(int spk_alloc)309 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
310 {
311 int i;
312 static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
313 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
314 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
315 };
316 unsigned long spk_mask = 0;
317
318 for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
319 if (spk_alloc & (1 << i))
320 spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
321 }
322
323 return spk_mask;
324 }
325
hdmi_codec_eld_chmap(struct hdmi_codec_priv * hcp)326 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
327 {
328 u8 spk_alloc;
329 unsigned long spk_mask;
330
331 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
332 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
333
334 /* Detect if only stereo supported, else return 8 channels mappings */
335 if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
336 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
337 else
338 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
339 }
340
hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv * hcp,unsigned char channels)341 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
342 unsigned char channels)
343 {
344 int i;
345 u8 spk_alloc;
346 unsigned long spk_mask;
347 const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
348
349 spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
350 spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
351
352 for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
353 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
354 if (!spk_alloc && cap->ca_id == 0)
355 return i;
356 if (cap->n_ch != channels)
357 continue;
358 if (!(cap->mask == (spk_mask & cap->mask)))
359 continue;
360 return i;
361 }
362
363 return -EINVAL;
364 }
hdmi_codec_chmap_ctl_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)365 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
366 struct snd_ctl_elem_value *ucontrol)
367 {
368 unsigned const char *map;
369 unsigned int i;
370 struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
371 struct hdmi_codec_priv *hcp = info->private_data;
372
373 map = info->chmap[hcp->chmap_idx].map;
374
375 for (i = 0; i < info->max_channels; i++) {
376 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
377 ucontrol->value.integer.value[i] = 0;
378 else
379 ucontrol->value.integer.value[i] = map[i];
380 }
381
382 return 0;
383 }
384
hdmi_codec_iec958_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)385 static int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol,
386 struct snd_ctl_elem_info *uinfo)
387 {
388 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
389 uinfo->count = 1;
390 return 0;
391 }
392
hdmi_codec_iec958_default_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)393 static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol,
394 struct snd_ctl_elem_value *ucontrol)
395 {
396 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
397 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
398
399 memcpy(ucontrol->value.iec958.status, hcp->iec_status,
400 sizeof(hcp->iec_status));
401
402 return 0;
403 }
404
hdmi_codec_iec958_default_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)405 static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol,
406 struct snd_ctl_elem_value *ucontrol)
407 {
408 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
409 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
410
411 memcpy(hcp->iec_status, ucontrol->value.iec958.status,
412 sizeof(hcp->iec_status));
413
414 return 0;
415 }
416
hdmi_codec_iec958_mask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)417 static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol,
418 struct snd_ctl_elem_value *ucontrol)
419 {
420 memset(ucontrol->value.iec958.status, 0xff,
421 sizeof_field(struct hdmi_codec_priv, iec_status));
422
423 return 0;
424 }
425
hdmi_codec_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)426 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
427 struct snd_soc_dai *dai)
428 {
429 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
430 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
431 int ret = 0;
432
433 mutex_lock(&hcp->lock);
434 if (hcp->busy) {
435 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
436 mutex_unlock(&hcp->lock);
437 return -EINVAL;
438 }
439
440 if (hcp->hcd.ops->audio_startup) {
441 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
442 if (ret)
443 goto err;
444 }
445
446 if (tx && hcp->hcd.ops->get_eld) {
447 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
448 hcp->eld, sizeof(hcp->eld));
449 if (ret)
450 goto err;
451
452 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
453 if (ret)
454 goto err;
455
456 /* Select chmap supported */
457 hdmi_codec_eld_chmap(hcp);
458 }
459
460 hcp->busy = true;
461
462 err:
463 mutex_unlock(&hcp->lock);
464 return ret;
465 }
466
hdmi_codec_shutdown(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)467 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
468 struct snd_soc_dai *dai)
469 {
470 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
471
472 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
473 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
474
475 mutex_lock(&hcp->lock);
476 hcp->busy = false;
477 mutex_unlock(&hcp->lock);
478 }
479
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)480 static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai,
481 unsigned int sample_width,
482 unsigned int sample_rate,
483 unsigned int channels,
484 struct hdmi_codec_params *hp)
485 {
486 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
487 int idx;
488
489 /* Select a channel allocation that matches with ELD and pcm channels */
490 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, channels);
491 if (idx < 0) {
492 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
493 idx);
494 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
495 return idx;
496 }
497
498 memset(hp, 0, sizeof(*hp));
499
500 hdmi_audio_infoframe_init(&hp->cea);
501 hp->cea.channels = channels;
502 hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
503 hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
504 hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
505 hp->cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
506
507 hp->sample_width = sample_width;
508 hp->sample_rate = sample_rate;
509 hp->channels = channels;
510
511 hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
512
513 return 0;
514 }
515
hdmi_codec_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)516 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
517 struct snd_pcm_hw_params *params,
518 struct snd_soc_dai *dai)
519 {
520 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
521 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
522 struct hdmi_codec_params hp = {
523 .iec = {
524 .status = { 0 },
525 .subcode = { 0 },
526 .pad = 0,
527 .dig_subframe = { 0 },
528 }
529 };
530 int ret;
531
532 if (!hcp->hcd.ops->hw_params)
533 return 0;
534
535 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
536 params_width(params), params_rate(params),
537 params_channels(params));
538
539 ret = hdmi_codec_fill_codec_params(dai,
540 params_width(params),
541 params_rate(params),
542 params_channels(params),
543 &hp);
544 if (ret < 0)
545 return ret;
546
547 memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
548 ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status,
549 sizeof(hp.iec.status));
550 if (ret < 0) {
551 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
552 ret);
553 return ret;
554 }
555
556 cf->bit_fmt = params_format(params);
557 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
558 cf, &hp);
559 }
560
hdmi_codec_prepare(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)561 static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
562 struct snd_soc_dai *dai)
563 {
564 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
565 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
566 struct snd_pcm_runtime *runtime = substream->runtime;
567 unsigned int channels = runtime->channels;
568 unsigned int width = snd_pcm_format_width(runtime->format);
569 unsigned int rate = runtime->rate;
570 struct hdmi_codec_params hp;
571 int ret;
572
573 if (!hcp->hcd.ops->prepare)
574 return 0;
575
576 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
577 width, rate, channels);
578
579 ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &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(runtime, 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 = runtime->format;
593 return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data,
594 cf, &hp);
595 }
596
hdmi_codec_i2s_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)597 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
598 unsigned int fmt)
599 {
600 struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
601
602 /* Reset daifmt */
603 memset(cf, 0, sizeof(*cf));
604
605 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
606 case SND_SOC_DAIFMT_CBP_CFP:
607 cf->bit_clk_provider = 1;
608 cf->frame_clk_provider = 1;
609 break;
610 case SND_SOC_DAIFMT_CBC_CFP:
611 cf->frame_clk_provider = 1;
612 break;
613 case SND_SOC_DAIFMT_CBP_CFC:
614 cf->bit_clk_provider = 1;
615 break;
616 case SND_SOC_DAIFMT_CBC_CFC:
617 break;
618 default:
619 return -EINVAL;
620 }
621
622 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
623 case SND_SOC_DAIFMT_NB_NF:
624 break;
625 case SND_SOC_DAIFMT_NB_IF:
626 cf->frame_clk_inv = 1;
627 break;
628 case SND_SOC_DAIFMT_IB_NF:
629 cf->bit_clk_inv = 1;
630 break;
631 case SND_SOC_DAIFMT_IB_IF:
632 cf->frame_clk_inv = 1;
633 cf->bit_clk_inv = 1;
634 break;
635 }
636
637 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
638 case SND_SOC_DAIFMT_I2S:
639 cf->fmt = HDMI_I2S;
640 break;
641 case SND_SOC_DAIFMT_DSP_A:
642 cf->fmt = HDMI_DSP_A;
643 break;
644 case SND_SOC_DAIFMT_DSP_B:
645 cf->fmt = HDMI_DSP_B;
646 break;
647 case SND_SOC_DAIFMT_RIGHT_J:
648 cf->fmt = HDMI_RIGHT_J;
649 break;
650 case SND_SOC_DAIFMT_LEFT_J:
651 cf->fmt = HDMI_LEFT_J;
652 break;
653 case SND_SOC_DAIFMT_AC97:
654 cf->fmt = HDMI_AC97;
655 break;
656 default:
657 dev_err(dai->dev, "Invalid DAI interface format\n");
658 return -EINVAL;
659 }
660
661 return 0;
662 }
663
hdmi_codec_mute(struct snd_soc_dai * dai,int mute,int direction)664 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
665 {
666 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
667
668 /*
669 * ignore if direction was CAPTURE
670 * and it had .no_capture_mute flag
671 * see
672 * snd_soc_dai_digital_mute()
673 */
674 if (hcp->hcd.ops->mute_stream &&
675 (direction == SNDRV_PCM_STREAM_PLAYBACK ||
676 !hcp->hcd.ops->no_capture_mute))
677 return hcp->hcd.ops->mute_stream(dai->dev->parent,
678 hcp->hcd.data,
679 mute, direction);
680
681 return -ENOTSUPP;
682 }
683
684 /*
685 * This driver can select all SND_SOC_DAIFMT_CBx_CFx,
686 * but need to be selected from Sound Card, not be auto selected.
687 * Because it might be used from other driver.
688 * For example,
689 * ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
690 */
691 static u64 hdmi_codec_formats =
692 SND_SOC_POSSIBLE_DAIFMT_NB_NF |
693 SND_SOC_POSSIBLE_DAIFMT_NB_IF |
694 SND_SOC_POSSIBLE_DAIFMT_IB_NF |
695 SND_SOC_POSSIBLE_DAIFMT_IB_IF |
696 SND_SOC_POSSIBLE_DAIFMT_I2S |
697 SND_SOC_POSSIBLE_DAIFMT_DSP_A |
698 SND_SOC_POSSIBLE_DAIFMT_DSP_B |
699 SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
700 SND_SOC_POSSIBLE_DAIFMT_LEFT_J |
701 SND_SOC_POSSIBLE_DAIFMT_AC97;
702
703 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
704 .startup = hdmi_codec_startup,
705 .shutdown = hdmi_codec_shutdown,
706 .hw_params = hdmi_codec_hw_params,
707 .prepare = hdmi_codec_prepare,
708 .set_fmt = hdmi_codec_i2s_set_fmt,
709 .mute_stream = hdmi_codec_mute,
710 .auto_selectable_formats = &hdmi_codec_formats,
711 .num_auto_selectable_formats = 1,
712 };
713
714 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
715 .startup = hdmi_codec_startup,
716 .shutdown = hdmi_codec_shutdown,
717 .hw_params = hdmi_codec_hw_params,
718 .mute_stream = hdmi_codec_mute,
719 };
720
721 #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
722 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
723 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
724 SNDRV_PCM_RATE_192000)
725
726 #define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
727 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
728
729 /*
730 * This list is only for formats allowed on the I2S bus. So there is
731 * some formats listed that are not supported by HDMI interface. For
732 * instance allowing the 32-bit formats enables 24-precision with CPU
733 * DAIs that do not support 24-bit formats. If the extra formats cause
734 * problems, we should add the video side driver an option to disable
735 * them.
736 */
737 #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
738 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
739 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
740
741 static struct snd_kcontrol_new hdmi_codec_controls[] = {
742 {
743 .access = SNDRV_CTL_ELEM_ACCESS_READ,
744 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
745 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
746 .info = hdmi_codec_iec958_info,
747 .get = hdmi_codec_iec958_mask_get,
748 },
749 {
750 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
751 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
752 .info = hdmi_codec_iec958_info,
753 .get = hdmi_codec_iec958_default_get,
754 .put = hdmi_codec_iec958_default_put,
755 },
756 {
757 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
758 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
759 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
760 .name = "ELD",
761 .info = hdmi_eld_ctl_info,
762 .get = hdmi_eld_ctl_get,
763 },
764 };
765
hdmi_codec_pcm_new(struct snd_soc_pcm_runtime * rtd,struct snd_soc_dai * dai)766 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
767 struct snd_soc_dai *dai)
768 {
769 struct snd_soc_dai_driver *drv = dai->driver;
770 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
771 unsigned int i;
772 int ret;
773
774 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
775 NULL, drv->playback.channels_max, 0,
776 &hcp->chmap_info);
777 if (ret < 0)
778 return ret;
779
780 /* override handlers */
781 hcp->chmap_info->private_data = hcp;
782 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
783
784 /* default chmap supported is stereo */
785 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
786 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
787
788 for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
789 struct snd_kcontrol *kctl;
790
791 /* add ELD ctl with the device number corresponding to the PCM stream */
792 kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
793 if (!kctl)
794 return -ENOMEM;
795
796 kctl->id.device = rtd->pcm->device;
797 ret = snd_ctl_add(rtd->card->snd_card, kctl);
798 if (ret < 0)
799 return ret;
800 }
801
802 return 0;
803 }
804
hdmi_dai_probe(struct snd_soc_dai * dai)805 static int hdmi_dai_probe(struct snd_soc_dai *dai)
806 {
807 struct snd_soc_dapm_context *dapm;
808 struct hdmi_codec_daifmt *daifmt;
809 struct snd_soc_dapm_route route[] = {
810 {
811 .sink = "TX",
812 .source = dai->driver->playback.stream_name,
813 },
814 {
815 .sink = dai->driver->capture.stream_name,
816 .source = "RX",
817 },
818 };
819 int ret;
820
821 dapm = snd_soc_component_get_dapm(dai->component);
822 ret = snd_soc_dapm_add_routes(dapm, route, 2);
823 if (ret)
824 return ret;
825
826 daifmt = devm_kzalloc(dai->dev, sizeof(*daifmt), GFP_KERNEL);
827 if (!daifmt)
828 return -ENOMEM;
829
830 dai->playback_dma_data = daifmt;
831 return 0;
832 }
833
hdmi_codec_jack_report(struct hdmi_codec_priv * hcp,unsigned int jack_status)834 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
835 unsigned int jack_status)
836 {
837 if (jack_status != hcp->jack_status) {
838 if (hcp->jack)
839 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
840 hcp->jack_status = jack_status;
841 }
842 }
843
plugged_cb(struct device * dev,bool plugged)844 static void plugged_cb(struct device *dev, bool plugged)
845 {
846 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
847
848 if (plugged) {
849 if (hcp->hcd.ops->get_eld) {
850 hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
851 hcp->eld, sizeof(hcp->eld));
852 }
853 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
854 } else {
855 hdmi_codec_jack_report(hcp, 0);
856 memset(hcp->eld, 0, sizeof(hcp->eld));
857 }
858 }
859
hdmi_codec_set_jack(struct snd_soc_component * component,struct snd_soc_jack * jack,void * data)860 static int hdmi_codec_set_jack(struct snd_soc_component *component,
861 struct snd_soc_jack *jack,
862 void *data)
863 {
864 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
865
866 if (hcp->hcd.ops->hook_plugged_cb) {
867 hcp->jack = jack;
868
869 /*
870 * Report the initial jack status which may have been provided
871 * by the parent hdmi driver while the hpd hook was registered.
872 */
873 snd_soc_jack_report(jack, hcp->jack_status, SND_JACK_LINEOUT);
874
875 return 0;
876 }
877
878 return -ENOTSUPP;
879 }
880
hdmi_dai_spdif_probe(struct snd_soc_dai * dai)881 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
882 {
883 struct hdmi_codec_daifmt *cf;
884 int ret;
885
886 ret = hdmi_dai_probe(dai);
887 if (ret)
888 return ret;
889
890 cf = dai->playback_dma_data;
891 cf->fmt = HDMI_SPDIF;
892
893 return 0;
894 }
895
896 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
897 .name = "i2s-hifi",
898 .id = DAI_ID_I2S,
899 .probe = hdmi_dai_probe,
900 .playback = {
901 .stream_name = "I2S Playback",
902 .channels_min = 2,
903 .channels_max = 8,
904 .rates = HDMI_RATES,
905 .formats = I2S_FORMATS,
906 .sig_bits = 24,
907 },
908 .capture = {
909 .stream_name = "Capture",
910 .channels_min = 2,
911 .channels_max = 8,
912 .rates = HDMI_RATES,
913 .formats = I2S_FORMATS,
914 .sig_bits = 24,
915 },
916 .ops = &hdmi_codec_i2s_dai_ops,
917 .pcm_new = hdmi_codec_pcm_new,
918 };
919
920 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
921 .name = "spdif-hifi",
922 .id = DAI_ID_SPDIF,
923 .probe = hdmi_dai_spdif_probe,
924 .playback = {
925 .stream_name = "SPDIF Playback",
926 .channels_min = 2,
927 .channels_max = 2,
928 .rates = HDMI_RATES,
929 .formats = SPDIF_FORMATS,
930 },
931 .capture = {
932 .stream_name = "Capture",
933 .channels_min = 2,
934 .channels_max = 2,
935 .rates = HDMI_RATES,
936 .formats = SPDIF_FORMATS,
937 },
938 .ops = &hdmi_codec_spdif_dai_ops,
939 .pcm_new = hdmi_codec_pcm_new,
940 };
941
hdmi_of_xlate_dai_id(struct snd_soc_component * component,struct device_node * endpoint)942 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
943 struct device_node *endpoint)
944 {
945 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
946 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
947
948 if (hcp->hcd.ops->get_dai_id)
949 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
950
951 return ret;
952 }
953
hdmi_probe(struct snd_soc_component * component)954 static int hdmi_probe(struct snd_soc_component *component)
955 {
956 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
957 int ret = 0;
958
959 if (hcp->hcd.ops->hook_plugged_cb) {
960 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
961 hcp->hcd.data,
962 plugged_cb,
963 component->dev);
964 }
965
966 return ret;
967 }
968
hdmi_remove(struct snd_soc_component * component)969 static void hdmi_remove(struct snd_soc_component *component)
970 {
971 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
972
973 if (hcp->hcd.ops->hook_plugged_cb)
974 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
975 hcp->hcd.data, NULL, NULL);
976 }
977
978 static const struct snd_soc_component_driver hdmi_driver = {
979 .probe = hdmi_probe,
980 .remove = hdmi_remove,
981 .dapm_widgets = hdmi_widgets,
982 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
983 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
984 .idle_bias_on = 1,
985 .use_pmdown_time = 1,
986 .endianness = 1,
987 .set_jack = hdmi_codec_set_jack,
988 };
989
hdmi_codec_probe(struct platform_device * pdev)990 static int hdmi_codec_probe(struct platform_device *pdev)
991 {
992 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
993 struct snd_soc_dai_driver *daidrv;
994 struct device *dev = &pdev->dev;
995 struct hdmi_codec_priv *hcp;
996 int dai_count, i = 0;
997 int ret;
998
999 if (!hcd) {
1000 dev_err(dev, "%s: No platform data\n", __func__);
1001 return -EINVAL;
1002 }
1003
1004 dai_count = hcd->i2s + hcd->spdif;
1005 if (dai_count < 1 || !hcd->ops ||
1006 (!hcd->ops->hw_params && !hcd->ops->prepare) ||
1007 !hcd->ops->audio_shutdown) {
1008 dev_err(dev, "%s: Invalid parameters\n", __func__);
1009 return -EINVAL;
1010 }
1011
1012 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
1013 if (!hcp)
1014 return -ENOMEM;
1015
1016 hcp->hcd = *hcd;
1017 mutex_init(&hcp->lock);
1018
1019 ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status,
1020 sizeof(hcp->iec_status));
1021 if (ret < 0)
1022 return ret;
1023
1024 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
1025 if (!daidrv)
1026 return -ENOMEM;
1027
1028 if (hcd->i2s) {
1029 daidrv[i] = hdmi_i2s_dai;
1030 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
1031 i++;
1032 }
1033
1034 if (hcd->spdif)
1035 daidrv[i] = hdmi_spdif_dai;
1036
1037 dev_set_drvdata(dev, hcp);
1038
1039 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
1040 dai_count);
1041 if (ret) {
1042 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
1043 __func__, ret);
1044 return ret;
1045 }
1046 return 0;
1047 }
1048
1049 static struct platform_driver hdmi_codec_driver = {
1050 .driver = {
1051 .name = HDMI_CODEC_DRV_NAME,
1052 },
1053 .probe = hdmi_codec_probe,
1054 };
1055
1056 module_platform_driver(hdmi_codec_driver);
1057
1058 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
1059 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
1060 MODULE_LICENSE("GPL");
1061 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
1062