d00734d31e0429bf3df8c12b0bcc118ccefb3ec2
[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                                 return ret;
444                 }
445                 /* Select chmap supported */
446                 hdmi_codec_eld_chmap(hcp);
447         }
448         return 0;
449 }
450
451 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
452                                 struct snd_soc_dai *dai)
453 {
454         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
455
456         dev_dbg(dai->dev, "%s()\n", __func__);
457
458         WARN_ON(hcp->current_stream != substream);
459
460         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
461         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
462
463         mutex_lock(&hcp->current_stream_lock);
464         hcp->current_stream = NULL;
465         mutex_unlock(&hcp->current_stream_lock);
466 }
467
468 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
469                                 struct snd_pcm_hw_params *params,
470                                 struct snd_soc_dai *dai)
471 {
472         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
473         struct hdmi_codec_params hp = {
474                 .iec = {
475                         .status = { 0 },
476                         .subcode = { 0 },
477                         .pad = 0,
478                         .dig_subframe = { 0 },
479                 }
480         };
481         int ret, idx;
482
483         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
484                 params_width(params), params_rate(params),
485                 params_channels(params));
486
487         if (params_width(params) > 24)
488                 params->msbits = 24;
489
490         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
491                                                        sizeof(hp.iec.status));
492         if (ret < 0) {
493                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
494                         ret);
495                 return ret;
496         }
497
498         ret = hdmi_codec_new_stream(substream, dai);
499         if (ret)
500                 return ret;
501
502         hdmi_audio_infoframe_init(&hp.cea);
503         hp.cea.channels = params_channels(params);
504         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
505         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
506         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
507
508         /* Select a channel allocation that matches with ELD and pcm channels */
509         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
510         if (idx < 0) {
511                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
512                         idx);
513                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
514                 return idx;
515         }
516         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
517         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
518
519         hp.sample_width = params_width(params);
520         hp.sample_rate = params_rate(params);
521         hp.channels = params_channels(params);
522
523         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
524                                        &hcp->daifmt[dai->id], &hp);
525 }
526
527 static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
528                               unsigned int fmt)
529 {
530         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
531         struct hdmi_codec_daifmt cf = { 0 };
532         int ret = 0;
533
534         dev_dbg(dai->dev, "%s()\n", __func__);
535
536         if (dai->id == DAI_ID_SPDIF) {
537                 cf.fmt = HDMI_SPDIF;
538         } else {
539                 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
540                 case SND_SOC_DAIFMT_CBM_CFM:
541                         cf.bit_clk_master = 1;
542                         cf.frame_clk_master = 1;
543                         break;
544                 case SND_SOC_DAIFMT_CBS_CFM:
545                         cf.frame_clk_master = 1;
546                         break;
547                 case SND_SOC_DAIFMT_CBM_CFS:
548                         cf.bit_clk_master = 1;
549                         break;
550                 case SND_SOC_DAIFMT_CBS_CFS:
551                         break;
552                 default:
553                         return -EINVAL;
554                 }
555
556                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
557                 case SND_SOC_DAIFMT_NB_NF:
558                         break;
559                 case SND_SOC_DAIFMT_NB_IF:
560                         cf.frame_clk_inv = 1;
561                         break;
562                 case SND_SOC_DAIFMT_IB_NF:
563                         cf.bit_clk_inv = 1;
564                         break;
565                 case SND_SOC_DAIFMT_IB_IF:
566                         cf.frame_clk_inv = 1;
567                         cf.bit_clk_inv = 1;
568                         break;
569                 }
570
571                 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
572                 case SND_SOC_DAIFMT_I2S:
573                         cf.fmt = HDMI_I2S;
574                         break;
575                 case SND_SOC_DAIFMT_DSP_A:
576                         cf.fmt = HDMI_DSP_A;
577                         break;
578                 case SND_SOC_DAIFMT_DSP_B:
579                         cf.fmt = HDMI_DSP_B;
580                         break;
581                 case SND_SOC_DAIFMT_RIGHT_J:
582                         cf.fmt = HDMI_RIGHT_J;
583                         break;
584                 case SND_SOC_DAIFMT_LEFT_J:
585                         cf.fmt = HDMI_LEFT_J;
586                         break;
587                 case SND_SOC_DAIFMT_AC97:
588                         cf.fmt = HDMI_AC97;
589                         break;
590                 default:
591                         dev_err(dai->dev, "Invalid DAI interface format\n");
592                         return -EINVAL;
593                 }
594         }
595
596         hcp->daifmt[dai->id] = cf;
597
598         return ret;
599 }
600
601 static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
602 {
603         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
604
605         dev_dbg(dai->dev, "%s()\n", __func__);
606
607         if (hcp->hcd.ops->digital_mute)
608                 return hcp->hcd.ops->digital_mute(dai->dev->parent,
609                                                   hcp->hcd.data, mute);
610
611         return 0;
612 }
613
614 static const struct snd_soc_dai_ops hdmi_dai_ops = {
615         .startup        = hdmi_codec_startup,
616         .shutdown       = hdmi_codec_shutdown,
617         .hw_params      = hdmi_codec_hw_params,
618         .set_fmt        = hdmi_codec_set_fmt,
619         .digital_mute   = hdmi_codec_digital_mute,
620 };
621
622
623 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
624                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
625                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
626                          SNDRV_PCM_RATE_192000)
627
628 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
629                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
630                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
631                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
632
633 /*
634  * This list is only for formats allowed on the I2S bus. So there is
635  * some formats listed that are not supported by HDMI interface. For
636  * instance allowing the 32-bit formats enables 24-precision with CPU
637  * DAIs that do not support 24-bit formats. If the extra formats cause
638  * problems, we should add the video side driver an option to disable
639  * them.
640  */
641 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
642                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
643                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
644                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
645                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
646
647 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
648                               struct snd_soc_dai *dai)
649 {
650         struct snd_soc_dai_driver *drv = dai->driver;
651         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
652         struct snd_kcontrol *kctl;
653         struct snd_kcontrol_new hdmi_eld_ctl = {
654                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
655                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
656                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
657                 .name   = "ELD",
658                 .info   = hdmi_eld_ctl_info,
659                 .get    = hdmi_eld_ctl_get,
660                 .device = rtd->pcm->device,
661         };
662         int ret;
663
664         dev_dbg(dai->dev, "%s()\n", __func__);
665
666         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
667                                       NULL, drv->playback.channels_max, 0,
668                                       &hcp->chmap_info);
669         if (ret < 0)
670                 return ret;
671
672         /* override handlers */
673         hcp->chmap_info->private_data = hcp;
674         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
675
676         /* default chmap supported is stereo */
677         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
678         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
679
680         /* add ELD ctl with the device number corresponding to the PCM stream */
681         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
682         if (!kctl)
683                 return -ENOMEM;
684
685         return snd_ctl_add(rtd->card->snd_card, kctl);
686 }
687
688 static int hdmi_dai_probe(struct snd_soc_dai *dai)
689 {
690         struct snd_soc_dapm_context *dapm;
691         struct snd_soc_dapm_route route = {
692                 .sink = "TX",
693                 .source = dai->driver->playback.stream_name,
694         };
695
696         dapm = snd_soc_component_get_dapm(dai->component);
697
698         return snd_soc_dapm_add_routes(dapm, &route, 1);
699 }
700
701 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
702         .name = "i2s-hifi",
703         .id = DAI_ID_I2S,
704         .probe = hdmi_dai_probe,
705         .playback = {
706                 .stream_name = "I2S Playback",
707                 .channels_min = 2,
708                 .channels_max = 8,
709                 .rates = HDMI_RATES,
710                 .formats = I2S_FORMATS,
711                 .sig_bits = 24,
712         },
713         .ops = &hdmi_dai_ops,
714         .pcm_new = hdmi_codec_pcm_new,
715 };
716
717 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
718         .name = "spdif-hifi",
719         .id = DAI_ID_SPDIF,
720         .probe = hdmi_dai_probe,
721         .playback = {
722                 .stream_name = "SPDIF Playback",
723                 .channels_min = 2,
724                 .channels_max = 2,
725                 .rates = HDMI_RATES,
726                 .formats = SPDIF_FORMATS,
727         },
728         .ops = &hdmi_dai_ops,
729         .pcm_new = hdmi_codec_pcm_new,
730 };
731
732 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
733                                  struct device_node *endpoint)
734 {
735         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
736         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
737
738         if (hcp->hcd.ops->get_dai_id)
739                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
740
741         return ret;
742 }
743
744 static const struct snd_soc_component_driver hdmi_driver = {
745         .dapm_widgets           = hdmi_widgets,
746         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
747         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
748         .idle_bias_on           = 1,
749         .use_pmdown_time        = 1,
750         .endianness             = 1,
751         .non_legacy_dai_naming  = 1,
752 };
753
754 static int hdmi_codec_probe(struct platform_device *pdev)
755 {
756         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
757         struct device *dev = &pdev->dev;
758         struct hdmi_codec_priv *hcp;
759         int dai_count, i = 0;
760         int ret;
761
762         dev_dbg(dev, "%s()\n", __func__);
763
764         if (!hcd) {
765                 dev_err(dev, "%s: No plalform data\n", __func__);
766                 return -EINVAL;
767         }
768
769         dai_count = hcd->i2s + hcd->spdif;
770         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
771             !hcd->ops->audio_shutdown) {
772                 dev_err(dev, "%s: Invalid parameters\n", __func__);
773                 return -EINVAL;
774         }
775
776         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
777         if (!hcp)
778                 return -ENOMEM;
779
780         hcp->hcd = *hcd;
781         mutex_init(&hcp->current_stream_lock);
782
783         hcp->daidrv = devm_kcalloc(dev, dai_count, sizeof(*hcp->daidrv),
784                                    GFP_KERNEL);
785         if (!hcp->daidrv)
786                 return -ENOMEM;
787
788         if (hcd->i2s) {
789                 hcp->daidrv[i] = hdmi_i2s_dai;
790                 hcp->daidrv[i].playback.channels_max =
791                         hcd->max_i2s_channels;
792                 i++;
793         }
794
795         if (hcd->spdif)
796                 hcp->daidrv[i] = hdmi_spdif_dai;
797
798         ret = devm_snd_soc_register_component(dev, &hdmi_driver, hcp->daidrv,
799                                      dai_count);
800         if (ret) {
801                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
802                         __func__, ret);
803                 return ret;
804         }
805
806         dev_set_drvdata(dev, hcp);
807         return 0;
808 }
809
810 static struct platform_driver hdmi_codec_driver = {
811         .driver = {
812                 .name = HDMI_CODEC_DRV_NAME,
813         },
814         .probe = hdmi_codec_probe,
815 };
816
817 module_platform_driver(hdmi_codec_driver);
818
819 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
820 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
821 MODULE_LICENSE("GPL");
822 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);