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 bool has_capture = !hcp->hcd.no_i2s_capture;
432 bool has_playback = !hcp->hcd.no_i2s_playback;
433 int ret = 0;
434
435 if (!((has_playback && tx) || (has_capture && !tx)))
436 return 0;
437
438 mutex_lock(&hcp->lock);
439 if (hcp->busy) {
440 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
441 mutex_unlock(&hcp->lock);
442 return -EINVAL;
443 }
444
445 if (hcp->hcd.ops->audio_startup) {
446 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
447 if (ret)
448 goto err;
449 }
450
451 if (tx && hcp->hcd.ops->get_eld) {
452 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
453 hcp->eld, sizeof(hcp->eld));
454 if (ret)
455 goto err;
456
457 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
458 if (ret)
459 goto err;
460
461 /* Select chmap supported */
462 hdmi_codec_eld_chmap(hcp);
463 }
464
465 hcp->busy = true;
466
467 err:
468 mutex_unlock(&hcp->lock);
469 return ret;
470 }
471
hdmi_codec_shutdown(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)472 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
473 struct snd_soc_dai *dai)
474 {
475 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
476 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
477 bool has_capture = !hcp->hcd.no_i2s_capture;
478 bool has_playback = !hcp->hcd.no_i2s_playback;
479
480 if (!((has_playback && tx) || (has_capture && !tx)))
481 return;
482
483 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
484 hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
485
486 mutex_lock(&hcp->lock);
487 hcp->busy = false;
488 mutex_unlock(&hcp->lock);
489 }
490
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)491 static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai,
492 unsigned int sample_width,
493 unsigned int sample_rate,
494 unsigned int channels,
495 struct hdmi_codec_params *hp)
496 {
497 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
498 int idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
499 u8 ca_id = 0;
500 bool pcm_audio = !(hcp->iec_status[0] & IEC958_AES0_NONAUDIO);
501
502 if (pcm_audio) {
503 /* Select a channel allocation that matches with ELD and pcm channels */
504 idx = hdmi_codec_get_ch_alloc_table_idx(hcp, channels);
505
506 if (idx < 0) {
507 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
508 idx);
509 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
510 return idx;
511 }
512
513 ca_id = hdmi_codec_channel_alloc[idx].ca_id;
514 }
515
516 memset(hp, 0, sizeof(*hp));
517
518 hdmi_audio_infoframe_init(&hp->cea);
519
520 if (pcm_audio)
521 hp->cea.channels = channels;
522 else
523 hp->cea.channels = 0;
524
525 hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
526 hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
527 hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
528 hp->cea.channel_allocation = ca_id;
529
530 hp->sample_width = sample_width;
531 hp->sample_rate = sample_rate;
532 hp->channels = channels;
533
534 if (pcm_audio)
535 hcp->chmap_idx = ca_id;
536 else
537 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
538
539 return 0;
540 }
541
hdmi_codec_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)542 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
543 struct snd_pcm_hw_params *params,
544 struct snd_soc_dai *dai)
545 {
546 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
547 struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
548 struct hdmi_codec_params hp = {
549 .iec = {
550 .status = { 0 },
551 .subcode = { 0 },
552 .pad = 0,
553 .dig_subframe = { 0 },
554 }
555 };
556 int ret;
557
558 if (!hcp->hcd.ops->hw_params)
559 return 0;
560
561 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
562 params_width(params), params_rate(params),
563 params_channels(params));
564
565 ret = hdmi_codec_fill_codec_params(dai,
566 params_width(params),
567 params_rate(params),
568 params_channels(params),
569 &hp);
570 if (ret < 0)
571 return ret;
572
573 memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
574 ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status,
575 sizeof(hp.iec.status));
576 if (ret < 0) {
577 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
578 ret);
579 return ret;
580 }
581
582 cf->bit_fmt = params_format(params);
583 return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
584 cf, &hp);
585 }
586
hdmi_codec_prepare(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)587 static int hdmi_codec_prepare(struct snd_pcm_substream *substream,
588 struct snd_soc_dai *dai)
589 {
590 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
591 struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
592 struct snd_pcm_runtime *runtime = substream->runtime;
593 unsigned int channels = runtime->channels;
594 unsigned int width = snd_pcm_format_width(runtime->format);
595 unsigned int rate = runtime->rate;
596 struct hdmi_codec_params hp;
597 int ret;
598
599 if (!hcp->hcd.ops->prepare)
600 return 0;
601
602 dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
603 width, rate, channels);
604
605 ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &hp);
606 if (ret < 0)
607 return ret;
608
609 memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status));
610 ret = snd_pcm_fill_iec958_consumer(runtime, hp.iec.status,
611 sizeof(hp.iec.status));
612 if (ret < 0) {
613 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
614 ret);
615 return ret;
616 }
617
618 cf->bit_fmt = runtime->format;
619 return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data,
620 cf, &hp);
621 }
622
hdmi_codec_i2s_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)623 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
624 unsigned int fmt)
625 {
626 struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai);
627
628 /* Reset daifmt */
629 memset(cf, 0, sizeof(*cf));
630
631 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
632 case SND_SOC_DAIFMT_CBP_CFP:
633 cf->bit_clk_provider = 1;
634 cf->frame_clk_provider = 1;
635 break;
636 case SND_SOC_DAIFMT_CBC_CFP:
637 cf->frame_clk_provider = 1;
638 break;
639 case SND_SOC_DAIFMT_CBP_CFC:
640 cf->bit_clk_provider = 1;
641 break;
642 case SND_SOC_DAIFMT_CBC_CFC:
643 break;
644 default:
645 return -EINVAL;
646 }
647
648 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
649 case SND_SOC_DAIFMT_NB_NF:
650 break;
651 case SND_SOC_DAIFMT_NB_IF:
652 cf->frame_clk_inv = 1;
653 break;
654 case SND_SOC_DAIFMT_IB_NF:
655 cf->bit_clk_inv = 1;
656 break;
657 case SND_SOC_DAIFMT_IB_IF:
658 cf->frame_clk_inv = 1;
659 cf->bit_clk_inv = 1;
660 break;
661 }
662
663 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
664 case SND_SOC_DAIFMT_I2S:
665 cf->fmt = HDMI_I2S;
666 break;
667 case SND_SOC_DAIFMT_DSP_A:
668 cf->fmt = HDMI_DSP_A;
669 break;
670 case SND_SOC_DAIFMT_DSP_B:
671 cf->fmt = HDMI_DSP_B;
672 break;
673 case SND_SOC_DAIFMT_RIGHT_J:
674 cf->fmt = HDMI_RIGHT_J;
675 break;
676 case SND_SOC_DAIFMT_LEFT_J:
677 cf->fmt = HDMI_LEFT_J;
678 break;
679 case SND_SOC_DAIFMT_AC97:
680 cf->fmt = HDMI_AC97;
681 break;
682 default:
683 dev_err(dai->dev, "Invalid DAI interface format\n");
684 return -EINVAL;
685 }
686
687 return 0;
688 }
689
hdmi_codec_mute(struct snd_soc_dai * dai,int mute,int direction)690 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
691 {
692 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
693
694 /*
695 * ignore if direction was CAPTURE
696 * and it had .no_capture_mute flag
697 * see
698 * snd_soc_dai_digital_mute()
699 */
700 if (hcp->hcd.ops->mute_stream &&
701 (direction == SNDRV_PCM_STREAM_PLAYBACK ||
702 !hcp->hcd.ops->no_capture_mute))
703 return hcp->hcd.ops->mute_stream(dai->dev->parent,
704 hcp->hcd.data,
705 mute, direction);
706
707 return -ENOTSUPP;
708 }
709
710 /*
711 * This driver can select all SND_SOC_DAIFMT_CBx_CFx,
712 * but need to be selected from Sound Card, not be auto selected.
713 * Because it might be used from other driver.
714 * For example,
715 * ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
716 */
717 static u64 hdmi_codec_formats =
718 SND_SOC_POSSIBLE_DAIFMT_NB_NF |
719 SND_SOC_POSSIBLE_DAIFMT_NB_IF |
720 SND_SOC_POSSIBLE_DAIFMT_IB_NF |
721 SND_SOC_POSSIBLE_DAIFMT_IB_IF |
722 SND_SOC_POSSIBLE_DAIFMT_I2S |
723 SND_SOC_POSSIBLE_DAIFMT_DSP_A |
724 SND_SOC_POSSIBLE_DAIFMT_DSP_B |
725 SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
726 SND_SOC_POSSIBLE_DAIFMT_LEFT_J |
727 SND_SOC_POSSIBLE_DAIFMT_AC97;
728
729 #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
730 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
731 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
732 SNDRV_PCM_RATE_192000)
733
734 #define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
735 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
736
737 /*
738 * This list is only for formats allowed on the I2S bus. So there is
739 * some formats listed that are not supported by HDMI interface. For
740 * instance allowing the 32-bit formats enables 24-precision with CPU
741 * DAIs that do not support 24-bit formats. If the extra formats cause
742 * problems, we should add the video side driver an option to disable
743 * them.
744 */
745 #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
746 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
747 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
748
749 static struct snd_kcontrol_new hdmi_codec_controls[] = {
750 {
751 .access = SNDRV_CTL_ELEM_ACCESS_READ,
752 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
753 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
754 .info = hdmi_codec_iec958_info,
755 .get = hdmi_codec_iec958_mask_get,
756 },
757 {
758 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
759 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
760 .info = hdmi_codec_iec958_info,
761 .get = hdmi_codec_iec958_default_get,
762 .put = hdmi_codec_iec958_default_put,
763 },
764 {
765 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
766 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
767 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
768 .name = "ELD",
769 .info = hdmi_eld_ctl_info,
770 .get = hdmi_eld_ctl_get,
771 },
772 };
773
hdmi_codec_pcm_new(struct snd_soc_pcm_runtime * rtd,struct snd_soc_dai * dai)774 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
775 struct snd_soc_dai *dai)
776 {
777 struct snd_soc_dai_driver *drv = dai->driver;
778 struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
779 unsigned int i;
780 int ret;
781
782 ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
783 NULL, drv->playback.channels_max, 0,
784 &hcp->chmap_info);
785 if (ret < 0)
786 return ret;
787
788 /* override handlers */
789 hcp->chmap_info->private_data = hcp;
790 hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
791
792 /* default chmap supported is stereo */
793 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
794 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
795
796 for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) {
797 struct snd_kcontrol *kctl;
798
799 /* add ELD ctl with the device number corresponding to the PCM stream */
800 kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component);
801 if (!kctl)
802 return -ENOMEM;
803
804 kctl->id.device = rtd->pcm->device;
805 ret = snd_ctl_add(rtd->card->snd_card, kctl);
806 if (ret < 0)
807 return ret;
808 }
809
810 return 0;
811 }
812
hdmi_dai_probe(struct snd_soc_dai * dai)813 static int hdmi_dai_probe(struct snd_soc_dai *dai)
814 {
815 struct snd_soc_dapm_context *dapm;
816 struct hdmi_codec_daifmt *daifmt;
817 struct snd_soc_dapm_route route[] = {
818 {
819 .sink = "TX",
820 .source = dai->driver->playback.stream_name,
821 },
822 {
823 .sink = dai->driver->capture.stream_name,
824 .source = "RX",
825 },
826 };
827 int ret, i;
828
829 dapm = snd_soc_component_get_dapm(dai->component);
830
831 /* One of the directions might be omitted for unidirectional DAIs */
832 for (i = 0; i < ARRAY_SIZE(route); i++) {
833 if (!route[i].source || !route[i].sink)
834 continue;
835
836 ret = snd_soc_dapm_add_routes(dapm, &route[i], 1);
837 if (ret)
838 return ret;
839 }
840
841 daifmt = devm_kzalloc(dai->dev, sizeof(*daifmt), GFP_KERNEL);
842 if (!daifmt)
843 return -ENOMEM;
844
845 snd_soc_dai_dma_data_set_playback(dai, daifmt);
846
847 return 0;
848 }
849
hdmi_codec_jack_report(struct hdmi_codec_priv * hcp,unsigned int jack_status)850 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
851 unsigned int jack_status)
852 {
853 if (jack_status != hcp->jack_status) {
854 if (hcp->jack)
855 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
856 hcp->jack_status = jack_status;
857 }
858 }
859
plugged_cb(struct device * dev,bool plugged)860 static void plugged_cb(struct device *dev, bool plugged)
861 {
862 struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
863
864 if (plugged) {
865 if (hcp->hcd.ops->get_eld) {
866 hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
867 hcp->eld, sizeof(hcp->eld));
868 }
869 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
870 } else {
871 hdmi_codec_jack_report(hcp, 0);
872 memset(hcp->eld, 0, sizeof(hcp->eld));
873 }
874 }
875
hdmi_codec_set_jack(struct snd_soc_component * component,struct snd_soc_jack * jack,void * data)876 static int hdmi_codec_set_jack(struct snd_soc_component *component,
877 struct snd_soc_jack *jack,
878 void *data)
879 {
880 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
881
882 if (hcp->hcd.ops->hook_plugged_cb) {
883 hcp->jack = jack;
884
885 /*
886 * Report the initial jack status which may have been provided
887 * by the parent hdmi driver while the hpd hook was registered.
888 */
889 snd_soc_jack_report(jack, hcp->jack_status, SND_JACK_LINEOUT);
890
891 return 0;
892 }
893
894 return -ENOTSUPP;
895 }
896
hdmi_dai_spdif_probe(struct snd_soc_dai * dai)897 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
898 {
899 struct hdmi_codec_daifmt *cf;
900 int ret;
901
902 ret = hdmi_dai_probe(dai);
903 if (ret)
904 return ret;
905
906 cf = snd_soc_dai_dma_data_get_playback(dai);
907 cf->fmt = HDMI_SPDIF;
908
909 return 0;
910 }
911
912 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
913 .probe = hdmi_dai_probe,
914 .startup = hdmi_codec_startup,
915 .shutdown = hdmi_codec_shutdown,
916 .hw_params = hdmi_codec_hw_params,
917 .prepare = hdmi_codec_prepare,
918 .set_fmt = hdmi_codec_i2s_set_fmt,
919 .mute_stream = hdmi_codec_mute,
920 .pcm_new = hdmi_codec_pcm_new,
921 .auto_selectable_formats = &hdmi_codec_formats,
922 .num_auto_selectable_formats = 1,
923 };
924
925 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
926 .probe = hdmi_dai_spdif_probe,
927 .startup = hdmi_codec_startup,
928 .shutdown = hdmi_codec_shutdown,
929 .hw_params = hdmi_codec_hw_params,
930 .mute_stream = hdmi_codec_mute,
931 .pcm_new = hdmi_codec_pcm_new,
932 };
933
934 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
935 .name = "i2s-hifi",
936 .id = DAI_ID_I2S,
937 .playback = {
938 .stream_name = "I2S Playback",
939 .channels_min = 2,
940 .channels_max = 8,
941 .rates = HDMI_RATES,
942 .formats = I2S_FORMATS,
943 .sig_bits = 24,
944 },
945 .capture = {
946 .stream_name = "Capture",
947 .channels_min = 2,
948 .channels_max = 8,
949 .rates = HDMI_RATES,
950 .formats = I2S_FORMATS,
951 .sig_bits = 24,
952 },
953 .ops = &hdmi_codec_i2s_dai_ops,
954 };
955
956 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
957 .name = "spdif-hifi",
958 .id = DAI_ID_SPDIF,
959 .playback = {
960 .stream_name = "SPDIF Playback",
961 .channels_min = 2,
962 .channels_max = 2,
963 .rates = HDMI_RATES,
964 .formats = SPDIF_FORMATS,
965 },
966 .capture = {
967 .stream_name = "Capture",
968 .channels_min = 2,
969 .channels_max = 2,
970 .rates = HDMI_RATES,
971 .formats = SPDIF_FORMATS,
972 },
973 .ops = &hdmi_codec_spdif_dai_ops,
974 };
975
hdmi_of_xlate_dai_id(struct snd_soc_component * component,struct device_node * endpoint)976 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
977 struct device_node *endpoint)
978 {
979 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
980 int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
981
982 if (hcp->hcd.ops->get_dai_id)
983 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
984
985 return ret;
986 }
987
hdmi_probe(struct snd_soc_component * component)988 static int hdmi_probe(struct snd_soc_component *component)
989 {
990 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
991 int ret = 0;
992
993 if (hcp->hcd.ops->hook_plugged_cb) {
994 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
995 hcp->hcd.data,
996 plugged_cb,
997 component->dev);
998 }
999
1000 return ret;
1001 }
1002
hdmi_remove(struct snd_soc_component * component)1003 static void hdmi_remove(struct snd_soc_component *component)
1004 {
1005 struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
1006
1007 if (hcp->hcd.ops->hook_plugged_cb)
1008 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
1009 hcp->hcd.data, NULL, NULL);
1010 }
1011
1012 static const struct snd_soc_component_driver hdmi_driver = {
1013 .probe = hdmi_probe,
1014 .remove = hdmi_remove,
1015 .dapm_widgets = hdmi_widgets,
1016 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
1017 .of_xlate_dai_id = hdmi_of_xlate_dai_id,
1018 .idle_bias_on = 1,
1019 .use_pmdown_time = 1,
1020 .endianness = 1,
1021 .set_jack = hdmi_codec_set_jack,
1022 };
1023
hdmi_codec_probe(struct platform_device * pdev)1024 static int hdmi_codec_probe(struct platform_device *pdev)
1025 {
1026 struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
1027 struct snd_soc_dai_driver *daidrv;
1028 struct device *dev = &pdev->dev;
1029 struct hdmi_codec_priv *hcp;
1030 int dai_count, i = 0;
1031 int ret;
1032
1033 if (!hcd) {
1034 dev_err(dev, "%s: No platform data\n", __func__);
1035 return -EINVAL;
1036 }
1037
1038 dai_count = hcd->i2s + hcd->spdif;
1039 if (dai_count < 1 || !hcd->ops ||
1040 (!hcd->ops->hw_params && !hcd->ops->prepare) ||
1041 !hcd->ops->audio_shutdown) {
1042 dev_err(dev, "%s: Invalid parameters\n", __func__);
1043 return -EINVAL;
1044 }
1045
1046 hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
1047 if (!hcp)
1048 return -ENOMEM;
1049
1050 hcp->hcd = *hcd;
1051 mutex_init(&hcp->lock);
1052
1053 ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status,
1054 sizeof(hcp->iec_status));
1055 if (ret < 0)
1056 return ret;
1057
1058 daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
1059 if (!daidrv)
1060 return -ENOMEM;
1061
1062 if (hcd->i2s) {
1063 daidrv[i] = hdmi_i2s_dai;
1064 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
1065 if (hcd->no_i2s_playback)
1066 memset(&daidrv[i].playback, 0,
1067 sizeof(daidrv[i].playback));
1068 if (hcd->no_i2s_capture)
1069 memset(&daidrv[i].capture, 0,
1070 sizeof(daidrv[i].capture));
1071 i++;
1072 }
1073
1074 if (hcd->spdif) {
1075 daidrv[i] = hdmi_spdif_dai;
1076 if (hcd->no_spdif_playback)
1077 memset(&daidrv[i].playback, 0,
1078 sizeof(daidrv[i].playback));
1079 if (hcd->no_spdif_capture)
1080 memset(&daidrv[i].capture, 0,
1081 sizeof(daidrv[i].capture));
1082 }
1083
1084 dev_set_drvdata(dev, hcp);
1085
1086 ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
1087 dai_count);
1088 if (ret) {
1089 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
1090 __func__, ret);
1091 return ret;
1092 }
1093 return 0;
1094 }
1095
1096 static struct platform_driver hdmi_codec_driver = {
1097 .driver = {
1098 .name = HDMI_CODEC_DRV_NAME,
1099 },
1100 .probe = hdmi_codec_probe,
1101 };
1102
1103 module_platform_driver(hdmi_codec_driver);
1104
1105 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
1106 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
1107 MODULE_LICENSE("GPL");
1108 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
1109