Merge branch 'drm-next-4.18' of git://people.freedesktop.org/~agd5f/linux into drm...
[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 static const struct snd_soc_dapm_route hdmi_routes[] = {
295         { "TX", NULL, "Playback" },
296 };
297
298 enum {
299         DAI_ID_I2S = 0,
300         DAI_ID_SPDIF,
301 };
302
303 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
304                              struct snd_ctl_elem_info *uinfo)
305 {
306         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
307         uinfo->count = FIELD_SIZEOF(struct hdmi_codec_priv, eld);
308
309         return 0;
310 }
311
312 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
313                             struct snd_ctl_elem_value *ucontrol)
314 {
315         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
316         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
317
318         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
319
320         return 0;
321 }
322
323 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
324 {
325         int i;
326         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
327                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
328                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
329         };
330         unsigned long spk_mask = 0;
331
332         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
333                 if (spk_alloc & (1 << i))
334                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
335         }
336
337         return spk_mask;
338 }
339
340 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
341 {
342         u8 spk_alloc;
343         unsigned long spk_mask;
344
345         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
346         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
347
348         /* Detect if only stereo supported, else return 8 channels mappings */
349         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
350                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
351         else
352                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
353 }
354
355 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
356                                              unsigned char channels)
357 {
358         int i;
359         u8 spk_alloc;
360         unsigned long spk_mask;
361         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
362
363         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
364         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
365
366         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
367                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
368                 if (!spk_alloc && cap->ca_id == 0)
369                         return i;
370                 if (cap->n_ch != channels)
371                         continue;
372                 if (!(cap->mask == (spk_mask & cap->mask)))
373                         continue;
374                 return i;
375         }
376
377         return -EINVAL;
378 }
379 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
380                               struct snd_ctl_elem_value *ucontrol)
381 {
382         unsigned const char *map;
383         unsigned int i;
384         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
385         struct hdmi_codec_priv *hcp = info->private_data;
386
387         map = info->chmap[hcp->chmap_idx].map;
388
389         for (i = 0; i < info->max_channels; i++) {
390                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
391                         ucontrol->value.integer.value[i] = 0;
392                 else
393                         ucontrol->value.integer.value[i] = map[i];
394         }
395
396         return 0;
397 }
398
399 static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
400                                  struct snd_soc_dai *dai)
401 {
402         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
403         int ret = 0;
404
405         mutex_lock(&hcp->current_stream_lock);
406         if (!hcp->current_stream) {
407                 hcp->current_stream = substream;
408         } else if (hcp->current_stream != substream) {
409                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
410                 ret = -EINVAL;
411         }
412         mutex_unlock(&hcp->current_stream_lock);
413
414         return ret;
415 }
416
417 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
418                               struct snd_soc_dai *dai)
419 {
420         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
421         int ret = 0;
422
423         dev_dbg(dai->dev, "%s()\n", __func__);
424
425         ret = hdmi_codec_new_stream(substream, dai);
426         if (ret)
427                 return ret;
428
429         if (hcp->hcd.ops->audio_startup) {
430                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
431                 if (ret) {
432                         mutex_lock(&hcp->current_stream_lock);
433                         hcp->current_stream = NULL;
434                         mutex_unlock(&hcp->current_stream_lock);
435                         return ret;
436                 }
437         }
438
439         if (hcp->hcd.ops->get_eld) {
440                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
441                                             hcp->eld, sizeof(hcp->eld));
442
443                 if (!ret) {
444                         ret = snd_pcm_hw_constraint_eld(substream->runtime,
445                                                         hcp->eld);
446                         if (ret)
447                                 return ret;
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         if (params_width(params) > 24)
492                 params->msbits = 24;
493
494         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
495                                                        sizeof(hp.iec.status));
496         if (ret < 0) {
497                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
498                         ret);
499                 return ret;
500         }
501
502         ret = hdmi_codec_new_stream(substream, dai);
503         if (ret)
504                 return ret;
505
506         hdmi_audio_infoframe_init(&hp.cea);
507         hp.cea.channels = params_channels(params);
508         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
509         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
510         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
511
512         /* Select a channel allocation that matches with ELD and pcm channels */
513         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
514         if (idx < 0) {
515                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
516                         idx);
517                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
518                 return idx;
519         }
520         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
521         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
522
523         hp.sample_width = params_width(params);
524         hp.sample_rate = params_rate(params);
525         hp.channels = params_channels(params);
526
527         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
528                                        &hcp->daifmt[dai->id], &hp);
529 }
530
531 static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
532                               unsigned int fmt)
533 {
534         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
535         struct hdmi_codec_daifmt cf = { 0 };
536         int ret = 0;
537
538         dev_dbg(dai->dev, "%s()\n", __func__);
539
540         if (dai->id == DAI_ID_SPDIF) {
541                 cf.fmt = HDMI_SPDIF;
542         } else {
543                 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
544                 case SND_SOC_DAIFMT_CBM_CFM:
545                         cf.bit_clk_master = 1;
546                         cf.frame_clk_master = 1;
547                         break;
548                 case SND_SOC_DAIFMT_CBS_CFM:
549                         cf.frame_clk_master = 1;
550                         break;
551                 case SND_SOC_DAIFMT_CBM_CFS:
552                         cf.bit_clk_master = 1;
553                         break;
554                 case SND_SOC_DAIFMT_CBS_CFS:
555                         break;
556                 default:
557                         return -EINVAL;
558                 }
559
560                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
561                 case SND_SOC_DAIFMT_NB_NF:
562                         break;
563                 case SND_SOC_DAIFMT_NB_IF:
564                         cf.frame_clk_inv = 1;
565                         break;
566                 case SND_SOC_DAIFMT_IB_NF:
567                         cf.bit_clk_inv = 1;
568                         break;
569                 case SND_SOC_DAIFMT_IB_IF:
570                         cf.frame_clk_inv = 1;
571                         cf.bit_clk_inv = 1;
572                         break;
573                 }
574
575                 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
576                 case SND_SOC_DAIFMT_I2S:
577                         cf.fmt = HDMI_I2S;
578                         break;
579                 case SND_SOC_DAIFMT_DSP_A:
580                         cf.fmt = HDMI_DSP_A;
581                         break;
582                 case SND_SOC_DAIFMT_DSP_B:
583                         cf.fmt = HDMI_DSP_B;
584                         break;
585                 case SND_SOC_DAIFMT_RIGHT_J:
586                         cf.fmt = HDMI_RIGHT_J;
587                         break;
588                 case SND_SOC_DAIFMT_LEFT_J:
589                         cf.fmt = HDMI_LEFT_J;
590                         break;
591                 case SND_SOC_DAIFMT_AC97:
592                         cf.fmt = HDMI_AC97;
593                         break;
594                 default:
595                         dev_err(dai->dev, "Invalid DAI interface format\n");
596                         return -EINVAL;
597                 }
598         }
599
600         hcp->daifmt[dai->id] = cf;
601
602         return ret;
603 }
604
605 static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
606 {
607         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
608
609         dev_dbg(dai->dev, "%s()\n", __func__);
610
611         if (hcp->hcd.ops->digital_mute)
612                 return hcp->hcd.ops->digital_mute(dai->dev->parent,
613                                                   hcp->hcd.data, mute);
614
615         return 0;
616 }
617
618 static const struct snd_soc_dai_ops hdmi_dai_ops = {
619         .startup        = hdmi_codec_startup,
620         .shutdown       = hdmi_codec_shutdown,
621         .hw_params      = hdmi_codec_hw_params,
622         .set_fmt        = hdmi_codec_set_fmt,
623         .digital_mute   = hdmi_codec_digital_mute,
624 };
625
626
627 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
628                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
629                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
630                          SNDRV_PCM_RATE_192000)
631
632 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
633                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
634                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
635                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
636
637 /*
638  * This list is only for formats allowed on the I2S bus. So there is
639  * some formats listed that are not supported by HDMI interface. For
640  * instance allowing the 32-bit formats enables 24-precision with CPU
641  * DAIs that do not support 24-bit formats. If the extra formats cause
642  * problems, we should add the video side driver an option to disable
643  * them.
644  */
645 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
646                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
647                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
648                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
649                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
650
651 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
652                               struct snd_soc_dai *dai)
653 {
654         struct snd_soc_dai_driver *drv = dai->driver;
655         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
656         struct snd_kcontrol *kctl;
657         struct snd_kcontrol_new hdmi_eld_ctl = {
658                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
659                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
660                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
661                 .name   = "ELD",
662                 .info   = hdmi_eld_ctl_info,
663                 .get    = hdmi_eld_ctl_get,
664                 .device = rtd->pcm->device,
665         };
666         int ret;
667
668         dev_dbg(dai->dev, "%s()\n", __func__);
669
670         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
671                                       NULL, drv->playback.channels_max, 0,
672                                       &hcp->chmap_info);
673         if (ret < 0)
674                 return ret;
675
676         /* override handlers */
677         hcp->chmap_info->private_data = hcp;
678         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
679
680         /* default chmap supported is stereo */
681         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
682         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
683
684         /* add ELD ctl with the device number corresponding to the PCM stream */
685         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
686         if (!kctl)
687                 return -ENOMEM;
688
689         return snd_ctl_add(rtd->card->snd_card, kctl);
690 }
691
692 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
693         .name = "i2s-hifi",
694         .id = DAI_ID_I2S,
695         .playback = {
696                 .stream_name = "I2S Playback",
697                 .channels_min = 2,
698                 .channels_max = 8,
699                 .rates = HDMI_RATES,
700                 .formats = I2S_FORMATS,
701                 .sig_bits = 24,
702         },
703         .ops = &hdmi_dai_ops,
704         .pcm_new = hdmi_codec_pcm_new,
705 };
706
707 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
708         .name = "spdif-hifi",
709         .id = DAI_ID_SPDIF,
710         .playback = {
711                 .stream_name = "SPDIF Playback",
712                 .channels_min = 2,
713                 .channels_max = 2,
714                 .rates = HDMI_RATES,
715                 .formats = SPDIF_FORMATS,
716         },
717         .ops = &hdmi_dai_ops,
718         .pcm_new = hdmi_codec_pcm_new,
719 };
720
721 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
722                                  struct device_node *endpoint)
723 {
724         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
725         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
726
727         if (hcp->hcd.ops->get_dai_id)
728                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
729
730         return ret;
731 }
732
733 static const struct snd_soc_component_driver hdmi_driver = {
734         .dapm_widgets           = hdmi_widgets,
735         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
736         .dapm_routes            = hdmi_routes,
737         .num_dapm_routes        = ARRAY_SIZE(hdmi_routes),
738         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
739         .idle_bias_on           = 1,
740         .use_pmdown_time        = 1,
741         .endianness             = 1,
742         .non_legacy_dai_naming  = 1,
743 };
744
745 static int hdmi_codec_probe(struct platform_device *pdev)
746 {
747         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
748         struct device *dev = &pdev->dev;
749         struct hdmi_codec_priv *hcp;
750         int dai_count, i = 0;
751         int ret;
752
753         dev_dbg(dev, "%s()\n", __func__);
754
755         if (!hcd) {
756                 dev_err(dev, "%s: No plalform data\n", __func__);
757                 return -EINVAL;
758         }
759
760         dai_count = hcd->i2s + hcd->spdif;
761         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
762             !hcd->ops->audio_shutdown) {
763                 dev_err(dev, "%s: Invalid parameters\n", __func__);
764                 return -EINVAL;
765         }
766
767         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
768         if (!hcp)
769                 return -ENOMEM;
770
771         hcp->hcd = *hcd;
772         mutex_init(&hcp->current_stream_lock);
773
774         hcp->daidrv = devm_kzalloc(dev, dai_count * sizeof(*hcp->daidrv),
775                                    GFP_KERNEL);
776         if (!hcp->daidrv)
777                 return -ENOMEM;
778
779         if (hcd->i2s) {
780                 hcp->daidrv[i] = hdmi_i2s_dai;
781                 hcp->daidrv[i].playback.channels_max =
782                         hcd->max_i2s_channels;
783                 i++;
784         }
785
786         if (hcd->spdif)
787                 hcp->daidrv[i] = hdmi_spdif_dai;
788
789         ret = devm_snd_soc_register_component(dev, &hdmi_driver, hcp->daidrv,
790                                      dai_count);
791         if (ret) {
792                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
793                         __func__, ret);
794                 return ret;
795         }
796
797         dev_set_drvdata(dev, hcp);
798         return 0;
799 }
800
801 static struct platform_driver hdmi_codec_driver = {
802         .driver = {
803                 .name = HDMI_CODEC_DRV_NAME,
804         },
805         .probe = hdmi_codec_probe,
806 };
807
808 module_platform_driver(hdmi_codec_driver);
809
810 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
811 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
812 MODULE_LICENSE("GPL");
813 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);