Merge branch 'asoc-5.2' into asoc-next
[sfrench/cifs-2.6.git] / sound / soc / codecs / hdmi-codec.c
1 /*
2  * ALSA SoC codec for HDMI encoder drivers
3  * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
4  * Author: Jyri Sarha <jsarha@ti.com>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * version 2 as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  */
15 #include <linux/module.h>
16 #include <linux/string.h>
17 #include <sound/core.h>
18 #include <sound/pcm.h>
19 #include <sound/pcm_params.h>
20 #include <sound/soc.h>
21 #include <sound/tlv.h>
22 #include <sound/pcm_drm_eld.h>
23 #include <sound/hdmi-codec.h>
24 #include <sound/pcm_iec958.h>
25
26 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
27
28 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN  -1
29
30 struct hdmi_codec_channel_map_table {
31         unsigned char map;      /* ALSA API channel map position */
32         unsigned long spk_mask;         /* speaker position bit mask */
33 };
34
35 /*
36  * CEA speaker placement for HDMI 1.4:
37  *
38  *  FL  FLC   FC   FRC   FR   FRW
39  *
40  *                                  LFE
41  *
42  *  RL  RLC   RC   RRC   RR
43  *
44  *  Speaker placement has to be extended to support HDMI 2.0
45  */
46 enum hdmi_codec_cea_spk_placement {
47         FL  = BIT(0),   /* Front Left           */
48         FC  = BIT(1),   /* Front Center         */
49         FR  = BIT(2),   /* Front Right          */
50         FLC = BIT(3),   /* Front Left Center    */
51         FRC = BIT(4),   /* Front Right Center   */
52         RL  = BIT(5),   /* Rear Left            */
53         RC  = BIT(6),   /* Rear Center          */
54         RR  = BIT(7),   /* Rear Right           */
55         RLC = BIT(8),   /* Rear Left Center     */
56         RRC = BIT(9),   /* Rear Right Center    */
57         LFE = BIT(10),  /* Low Frequency Effect */
58 };
59
60 /*
61  * cea Speaker allocation structure
62  */
63 struct hdmi_codec_cea_spk_alloc {
64         const int ca_id;
65         unsigned int n_ch;
66         unsigned long mask;
67 };
68
69 /* Channel maps  stereo HDMI */
70 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
71         { .channels = 2,
72           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
73         { }
74 };
75
76 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
77 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
78         { .channels = 2, /* CA_ID 0x00 */
79           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
80         { .channels = 4, /* CA_ID 0x01 */
81           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
82                    SNDRV_CHMAP_NA } },
83         { .channels = 4, /* CA_ID 0x02 */
84           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
85                    SNDRV_CHMAP_FC } },
86         { .channels = 4, /* CA_ID 0x03 */
87           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
88                    SNDRV_CHMAP_FC } },
89         { .channels = 6, /* CA_ID 0x04 */
90           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
91                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
92         { .channels = 6, /* CA_ID 0x05 */
93           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
94                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
95         { .channels = 6, /* CA_ID 0x06 */
96           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
97                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
98         { .channels = 6, /* CA_ID 0x07 */
99           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
100                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
101         { .channels = 6, /* CA_ID 0x08 */
102           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
103                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
104         { .channels = 6, /* CA_ID 0x09 */
105           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
106                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
107         { .channels = 6, /* CA_ID 0x0A */
108           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
109                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
110         { .channels = 6, /* CA_ID 0x0B */
111           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
112                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
113         { .channels = 8, /* CA_ID 0x0C */
114           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
115                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
116                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
117         { .channels = 8, /* CA_ID 0x0D */
118           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
119                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
120                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
121         { .channels = 8, /* CA_ID 0x0E */
122           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
123                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
124                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
125         { .channels = 8, /* CA_ID 0x0F */
126           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
127                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
128                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
129         { .channels = 8, /* CA_ID 0x10 */
130           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
131                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
132                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
133         { .channels = 8, /* CA_ID 0x11 */
134           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
135                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
136                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
137         { .channels = 8, /* CA_ID 0x12 */
138           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
139                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
140                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
141         { .channels = 8, /* CA_ID 0x13 */
142           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
143                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
144                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
145         { .channels = 8, /* CA_ID 0x14 */
146           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
147                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
148                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
149         { .channels = 8, /* CA_ID 0x15 */
150           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
151                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
152                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
153         { .channels = 8, /* CA_ID 0x16 */
154           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
155                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
156                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
157         { .channels = 8, /* CA_ID 0x17 */
158           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
159                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
160                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
161         { .channels = 8, /* CA_ID 0x18 */
162           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
163                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
164                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
165         { .channels = 8, /* CA_ID 0x19 */
166           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
167                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
168                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
169         { .channels = 8, /* CA_ID 0x1A */
170           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
171                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
172                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
173         { .channels = 8, /* CA_ID 0x1B */
174           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
175                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
176                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
177         { .channels = 8, /* CA_ID 0x1C */
178           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
179                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
180                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
181         { .channels = 8, /* CA_ID 0x1D */
182           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
183                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
184                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
185         { .channels = 8, /* CA_ID 0x1E */
186           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
187                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
188                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
189         { .channels = 8, /* CA_ID 0x1F */
190           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
191                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
192                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
193         { }
194 };
195
196 /*
197  * hdmi_codec_channel_alloc: speaker configuration available for CEA
198  *
199  * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
200  * The preceding ones have better chances to be selected by
201  * hdmi_codec_get_ch_alloc_table_idx().
202  */
203 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
204         { .ca_id = 0x00, .n_ch = 2,
205           .mask = FL | FR},
206         /* 2.1 */
207         { .ca_id = 0x01, .n_ch = 4,
208           .mask = FL | FR | LFE},
209         /* Dolby Surround */
210         { .ca_id = 0x02, .n_ch = 4,
211           .mask = FL | FR | FC },
212         /* surround51 */
213         { .ca_id = 0x0b, .n_ch = 6,
214           .mask = FL | FR | LFE | FC | RL | RR},
215         /* surround40 */
216         { .ca_id = 0x08, .n_ch = 6,
217           .mask = FL | FR | RL | RR },
218         /* surround41 */
219         { .ca_id = 0x09, .n_ch = 6,
220           .mask = FL | FR | LFE | RL | RR },
221         /* surround50 */
222         { .ca_id = 0x0a, .n_ch = 6,
223           .mask = FL | FR | FC | RL | RR },
224         /* 6.1 */
225         { .ca_id = 0x0f, .n_ch = 8,
226           .mask = FL | FR | LFE | FC | RL | RR | RC },
227         /* surround71 */
228         { .ca_id = 0x13, .n_ch = 8,
229           .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
230         /* others */
231         { .ca_id = 0x03, .n_ch = 8,
232           .mask = FL | FR | LFE | FC },
233         { .ca_id = 0x04, .n_ch = 8,
234           .mask = FL | FR | RC},
235         { .ca_id = 0x05, .n_ch = 8,
236           .mask = FL | FR | LFE | RC },
237         { .ca_id = 0x06, .n_ch = 8,
238           .mask = FL | FR | FC | RC },
239         { .ca_id = 0x07, .n_ch = 8,
240           .mask = FL | FR | LFE | FC | RC },
241         { .ca_id = 0x0c, .n_ch = 8,
242           .mask = FL | FR | RC | RL | RR },
243         { .ca_id = 0x0d, .n_ch = 8,
244           .mask = FL | FR | LFE | RL | RR | RC },
245         { .ca_id = 0x0e, .n_ch = 8,
246           .mask = FL | FR | FC | RL | RR | RC },
247         { .ca_id = 0x10, .n_ch = 8,
248           .mask = FL | FR | RL | RR | RLC | RRC },
249         { .ca_id = 0x11, .n_ch = 8,
250           .mask = FL | FR | LFE | RL | RR | RLC | RRC },
251         { .ca_id = 0x12, .n_ch = 8,
252           .mask = FL | FR | FC | RL | RR | RLC | RRC },
253         { .ca_id = 0x14, .n_ch = 8,
254           .mask = FL | FR | FLC | FRC },
255         { .ca_id = 0x15, .n_ch = 8,
256           .mask = FL | FR | LFE | FLC | FRC },
257         { .ca_id = 0x16, .n_ch = 8,
258           .mask = FL | FR | FC | FLC | FRC },
259         { .ca_id = 0x17, .n_ch = 8,
260           .mask = FL | FR | LFE | FC | FLC | FRC },
261         { .ca_id = 0x18, .n_ch = 8,
262           .mask = FL | FR | RC | FLC | FRC },
263         { .ca_id = 0x19, .n_ch = 8,
264           .mask = FL | FR | LFE | RC | FLC | FRC },
265         { .ca_id = 0x1a, .n_ch = 8,
266           .mask = FL | FR | RC | FC | FLC | FRC },
267         { .ca_id = 0x1b, .n_ch = 8,
268           .mask = FL | FR | LFE | RC | FC | FLC | FRC },
269         { .ca_id = 0x1c, .n_ch = 8,
270           .mask = FL | FR | RL | RR | FLC | FRC },
271         { .ca_id = 0x1d, .n_ch = 8,
272           .mask = FL | FR | LFE | RL | RR | FLC | FRC },
273         { .ca_id = 0x1e, .n_ch = 8,
274           .mask = FL | FR | FC | RL | RR | FLC | FRC },
275         { .ca_id = 0x1f, .n_ch = 8,
276           .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
277 };
278
279 struct hdmi_codec_priv {
280         struct hdmi_codec_pdata hcd;
281         struct snd_soc_dai_driver *daidrv;
282         struct hdmi_codec_daifmt daifmt[2];
283         struct mutex current_stream_lock;
284         struct snd_pcm_substream *current_stream;
285         uint8_t eld[MAX_ELD_BYTES];
286         struct snd_pcm_chmap *chmap_info;
287         unsigned int chmap_idx;
288 };
289
290 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
291         SND_SOC_DAPM_OUTPUT("TX"),
292 };
293
294 enum {
295         DAI_ID_I2S = 0,
296         DAI_ID_SPDIF,
297 };
298
299 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
300                              struct snd_ctl_elem_info *uinfo)
301 {
302         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
303         uinfo->count = FIELD_SIZEOF(struct hdmi_codec_priv, eld);
304
305         return 0;
306 }
307
308 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
309                             struct snd_ctl_elem_value *ucontrol)
310 {
311         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
312         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
313
314         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
315
316         return 0;
317 }
318
319 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
320 {
321         int i;
322         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
323                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
324                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
325         };
326         unsigned long spk_mask = 0;
327
328         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
329                 if (spk_alloc & (1 << i))
330                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
331         }
332
333         return spk_mask;
334 }
335
336 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
337 {
338         u8 spk_alloc;
339         unsigned long spk_mask;
340
341         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
342         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
343
344         /* Detect if only stereo supported, else return 8 channels mappings */
345         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
346                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
347         else
348                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
349 }
350
351 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
352                                              unsigned char channels)
353 {
354         int i;
355         u8 spk_alloc;
356         unsigned long spk_mask;
357         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
358
359         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
360         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
361
362         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
363                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
364                 if (!spk_alloc && cap->ca_id == 0)
365                         return i;
366                 if (cap->n_ch != channels)
367                         continue;
368                 if (!(cap->mask == (spk_mask & cap->mask)))
369                         continue;
370                 return i;
371         }
372
373         return -EINVAL;
374 }
375 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
376                               struct snd_ctl_elem_value *ucontrol)
377 {
378         unsigned const char *map;
379         unsigned int i;
380         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
381         struct hdmi_codec_priv *hcp = info->private_data;
382
383         map = info->chmap[hcp->chmap_idx].map;
384
385         for (i = 0; i < info->max_channels; i++) {
386                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
387                         ucontrol->value.integer.value[i] = 0;
388                 else
389                         ucontrol->value.integer.value[i] = map[i];
390         }
391
392         return 0;
393 }
394
395 static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
396                                  struct snd_soc_dai *dai)
397 {
398         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
399         int ret = 0;
400
401         mutex_lock(&hcp->current_stream_lock);
402         if (!hcp->current_stream) {
403                 hcp->current_stream = substream;
404         } else if (hcp->current_stream != substream) {
405                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
406                 ret = -EINVAL;
407         }
408         mutex_unlock(&hcp->current_stream_lock);
409
410         return ret;
411 }
412
413 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
414                               struct snd_soc_dai *dai)
415 {
416         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
417         int ret = 0;
418
419         dev_dbg(dai->dev, "%s()\n", __func__);
420
421         ret = hdmi_codec_new_stream(substream, dai);
422         if (ret)
423                 return ret;
424
425         if (hcp->hcd.ops->audio_startup) {
426                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
427                 if (ret) {
428                         mutex_lock(&hcp->current_stream_lock);
429                         hcp->current_stream = NULL;
430                         mutex_unlock(&hcp->current_stream_lock);
431                         return ret;
432                 }
433         }
434
435         if (hcp->hcd.ops->get_eld) {
436                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
437                                             hcp->eld, sizeof(hcp->eld));
438
439                 if (!ret) {
440                         ret = snd_pcm_hw_constraint_eld(substream->runtime,
441                                                         hcp->eld);
442                         if (ret) {
443                                 mutex_lock(&hcp->current_stream_lock);
444                                 hcp->current_stream = NULL;
445                                 mutex_unlock(&hcp->current_stream_lock);
446                                 return ret;
447                         }
448                 }
449                 /* Select chmap supported */
450                 hdmi_codec_eld_chmap(hcp);
451         }
452         return 0;
453 }
454
455 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
456                                 struct snd_soc_dai *dai)
457 {
458         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
459
460         dev_dbg(dai->dev, "%s()\n", __func__);
461
462         WARN_ON(hcp->current_stream != substream);
463
464         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
465         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
466
467         mutex_lock(&hcp->current_stream_lock);
468         hcp->current_stream = NULL;
469         mutex_unlock(&hcp->current_stream_lock);
470 }
471
472 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
473                                 struct snd_pcm_hw_params *params,
474                                 struct snd_soc_dai *dai)
475 {
476         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
477         struct hdmi_codec_params hp = {
478                 .iec = {
479                         .status = { 0 },
480                         .subcode = { 0 },
481                         .pad = 0,
482                         .dig_subframe = { 0 },
483                 }
484         };
485         int ret, idx;
486
487         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
488                 params_width(params), params_rate(params),
489                 params_channels(params));
490
491         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
492                                                        sizeof(hp.iec.status));
493         if (ret < 0) {
494                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
495                         ret);
496                 return ret;
497         }
498
499         hdmi_audio_infoframe_init(&hp.cea);
500         hp.cea.channels = params_channels(params);
501         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
502         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
503         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
504
505         /* Select a channel allocation that matches with ELD and pcm channels */
506         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
507         if (idx < 0) {
508                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
509                         idx);
510                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
511                 return idx;
512         }
513         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
514         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
515
516         hp.sample_width = params_width(params);
517         hp.sample_rate = params_rate(params);
518         hp.channels = params_channels(params);
519
520         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
521                                        &hcp->daifmt[dai->id], &hp);
522 }
523
524 static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
525                               unsigned int fmt)
526 {
527         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
528         struct hdmi_codec_daifmt cf = { 0 };
529
530         dev_dbg(dai->dev, "%s()\n", __func__);
531
532         if (dai->id == DAI_ID_SPDIF)
533                 return 0;
534
535         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
536         case SND_SOC_DAIFMT_CBM_CFM:
537                 cf.bit_clk_master = 1;
538                 cf.frame_clk_master = 1;
539                 break;
540         case SND_SOC_DAIFMT_CBS_CFM:
541                 cf.frame_clk_master = 1;
542                 break;
543         case SND_SOC_DAIFMT_CBM_CFS:
544                 cf.bit_clk_master = 1;
545                 break;
546         case SND_SOC_DAIFMT_CBS_CFS:
547                 break;
548         default:
549                 return -EINVAL;
550         }
551
552         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
553         case SND_SOC_DAIFMT_NB_NF:
554                 break;
555         case SND_SOC_DAIFMT_NB_IF:
556                 cf.frame_clk_inv = 1;
557                 break;
558         case SND_SOC_DAIFMT_IB_NF:
559                 cf.bit_clk_inv = 1;
560                 break;
561         case SND_SOC_DAIFMT_IB_IF:
562                 cf.frame_clk_inv = 1;
563                 cf.bit_clk_inv = 1;
564                 break;
565         }
566
567         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
568         case SND_SOC_DAIFMT_I2S:
569                 cf.fmt = HDMI_I2S;
570                 break;
571         case SND_SOC_DAIFMT_DSP_A:
572                 cf.fmt = HDMI_DSP_A;
573                 break;
574         case SND_SOC_DAIFMT_DSP_B:
575                 cf.fmt = HDMI_DSP_B;
576                 break;
577         case SND_SOC_DAIFMT_RIGHT_J:
578                 cf.fmt = HDMI_RIGHT_J;
579                 break;
580         case SND_SOC_DAIFMT_LEFT_J:
581                 cf.fmt = HDMI_LEFT_J;
582                 break;
583         case SND_SOC_DAIFMT_AC97:
584                 cf.fmt = HDMI_AC97;
585                 break;
586         default:
587                 dev_err(dai->dev, "Invalid DAI interface format\n");
588                 return -EINVAL;
589         }
590
591         hcp->daifmt[dai->id] = cf;
592
593         return 0;
594 }
595
596 static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
597 {
598         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
599
600         dev_dbg(dai->dev, "%s()\n", __func__);
601
602         if (hcp->hcd.ops->digital_mute)
603                 return hcp->hcd.ops->digital_mute(dai->dev->parent,
604                                                   hcp->hcd.data, mute);
605
606         return 0;
607 }
608
609 static const struct snd_soc_dai_ops hdmi_dai_ops = {
610         .startup        = hdmi_codec_startup,
611         .shutdown       = hdmi_codec_shutdown,
612         .hw_params      = hdmi_codec_hw_params,
613         .set_fmt        = hdmi_codec_set_fmt,
614         .digital_mute   = hdmi_codec_digital_mute,
615 };
616
617
618 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
619                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
620                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
621                          SNDRV_PCM_RATE_192000)
622
623 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
624                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
625                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
626                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
627
628 /*
629  * This list is only for formats allowed on the I2S bus. So there is
630  * some formats listed that are not supported by HDMI interface. For
631  * instance allowing the 32-bit formats enables 24-precision with CPU
632  * DAIs that do not support 24-bit formats. If the extra formats cause
633  * problems, we should add the video side driver an option to disable
634  * them.
635  */
636 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
637                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
638                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
639                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
640                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
641
642 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
643                               struct snd_soc_dai *dai)
644 {
645         struct snd_soc_dai_driver *drv = dai->driver;
646         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
647         struct snd_kcontrol *kctl;
648         struct snd_kcontrol_new hdmi_eld_ctl = {
649                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
650                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
651                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
652                 .name   = "ELD",
653                 .info   = hdmi_eld_ctl_info,
654                 .get    = hdmi_eld_ctl_get,
655                 .device = rtd->pcm->device,
656         };
657         int ret;
658
659         dev_dbg(dai->dev, "%s()\n", __func__);
660
661         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
662                                       NULL, drv->playback.channels_max, 0,
663                                       &hcp->chmap_info);
664         if (ret < 0)
665                 return ret;
666
667         /* override handlers */
668         hcp->chmap_info->private_data = hcp;
669         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
670
671         /* default chmap supported is stereo */
672         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
673         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
674
675         /* add ELD ctl with the device number corresponding to the PCM stream */
676         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
677         if (!kctl)
678                 return -ENOMEM;
679
680         return snd_ctl_add(rtd->card->snd_card, kctl);
681 }
682
683 static int hdmi_dai_probe(struct snd_soc_dai *dai)
684 {
685         struct snd_soc_dapm_context *dapm;
686         struct snd_soc_dapm_route route = {
687                 .sink = "TX",
688                 .source = dai->driver->playback.stream_name,
689         };
690
691         dapm = snd_soc_component_get_dapm(dai->component);
692
693         return snd_soc_dapm_add_routes(dapm, &route, 1);
694 }
695
696 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
697         .name = "i2s-hifi",
698         .id = DAI_ID_I2S,
699         .probe = hdmi_dai_probe,
700         .playback = {
701                 .stream_name = "I2S Playback",
702                 .channels_min = 2,
703                 .channels_max = 8,
704                 .rates = HDMI_RATES,
705                 .formats = I2S_FORMATS,
706                 .sig_bits = 24,
707         },
708         .ops = &hdmi_dai_ops,
709         .pcm_new = hdmi_codec_pcm_new,
710 };
711
712 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
713         .name = "spdif-hifi",
714         .id = DAI_ID_SPDIF,
715         .probe = hdmi_dai_probe,
716         .playback = {
717                 .stream_name = "SPDIF Playback",
718                 .channels_min = 2,
719                 .channels_max = 2,
720                 .rates = HDMI_RATES,
721                 .formats = SPDIF_FORMATS,
722         },
723         .ops = &hdmi_dai_ops,
724         .pcm_new = hdmi_codec_pcm_new,
725 };
726
727 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
728                                  struct device_node *endpoint)
729 {
730         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
731         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
732
733         if (hcp->hcd.ops->get_dai_id)
734                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
735
736         return ret;
737 }
738
739 static const struct snd_soc_component_driver hdmi_driver = {
740         .dapm_widgets           = hdmi_widgets,
741         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
742         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
743         .idle_bias_on           = 1,
744         .use_pmdown_time        = 1,
745         .endianness             = 1,
746         .non_legacy_dai_naming  = 1,
747 };
748
749 static int hdmi_codec_probe(struct platform_device *pdev)
750 {
751         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
752         struct device *dev = &pdev->dev;
753         struct hdmi_codec_priv *hcp;
754         int dai_count, i = 0;
755         int ret;
756
757         dev_dbg(dev, "%s()\n", __func__);
758
759         if (!hcd) {
760                 dev_err(dev, "%s: No platform data\n", __func__);
761                 return -EINVAL;
762         }
763
764         dai_count = hcd->i2s + hcd->spdif;
765         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
766             !hcd->ops->audio_shutdown) {
767                 dev_err(dev, "%s: Invalid parameters\n", __func__);
768                 return -EINVAL;
769         }
770
771         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
772         if (!hcp)
773                 return -ENOMEM;
774
775         hcp->hcd = *hcd;
776         mutex_init(&hcp->current_stream_lock);
777
778         hcp->daidrv = devm_kcalloc(dev, dai_count, sizeof(*hcp->daidrv),
779                                    GFP_KERNEL);
780         if (!hcp->daidrv)
781                 return -ENOMEM;
782
783         if (hcd->i2s) {
784                 hcp->daidrv[i] = hdmi_i2s_dai;
785                 hcp->daidrv[i].playback.channels_max =
786                         hcd->max_i2s_channels;
787                 i++;
788         }
789
790         if (hcd->spdif) {
791                 hcp->daidrv[i] = hdmi_spdif_dai;
792                 hcp->daifmt[DAI_ID_SPDIF].fmt = HDMI_SPDIF;
793         }
794
795         dev_set_drvdata(dev, hcp);
796
797         ret = devm_snd_soc_register_component(dev, &hdmi_driver, hcp->daidrv,
798                                      dai_count);
799         if (ret) {
800                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
801                         __func__, ret);
802                 return ret;
803         }
804         return 0;
805 }
806
807 static struct platform_driver hdmi_codec_driver = {
808         .driver = {
809                 .name = HDMI_CODEC_DRV_NAME,
810         },
811         .probe = hdmi_codec_probe,
812 };
813
814 module_platform_driver(hdmi_codec_driver);
815
816 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
817 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
818 MODULE_LICENSE("GPL");
819 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);