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[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         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
307         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
308
309         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
310         uinfo->count = sizeof(hcp->eld);
311
312         return 0;
313 }
314
315 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
316                             struct snd_ctl_elem_value *ucontrol)
317 {
318         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
319         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
320
321         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
322
323         return 0;
324 }
325
326 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
327 {
328         int i;
329         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
330                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
331                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
332         };
333         unsigned long spk_mask = 0;
334
335         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
336                 if (spk_alloc & (1 << i))
337                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
338         }
339
340         return spk_mask;
341 }
342
343 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
344 {
345         u8 spk_alloc;
346         unsigned long spk_mask;
347
348         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
349         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
350
351         /* Detect if only stereo supported, else return 8 channels mappings */
352         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
353                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
354         else
355                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
356 }
357
358 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
359                                              unsigned char channels)
360 {
361         int i;
362         u8 spk_alloc;
363         unsigned long spk_mask;
364         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
365
366         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
367         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
368
369         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
370                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
371                 if (!spk_alloc && cap->ca_id == 0)
372                         return i;
373                 if (cap->n_ch != channels)
374                         continue;
375                 if (!(cap->mask == (spk_mask & cap->mask)))
376                         continue;
377                 return i;
378         }
379
380         return -EINVAL;
381 }
382 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
383                               struct snd_ctl_elem_value *ucontrol)
384 {
385         unsigned const char *map;
386         unsigned int i;
387         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
388         struct hdmi_codec_priv *hcp = info->private_data;
389
390         map = info->chmap[hcp->chmap_idx].map;
391
392         for (i = 0; i < info->max_channels; i++) {
393                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
394                         ucontrol->value.integer.value[i] = 0;
395                 else
396                         ucontrol->value.integer.value[i] = map[i];
397         }
398
399         return 0;
400 }
401
402 static int hdmi_codec_new_stream(struct snd_pcm_substream *substream,
403                                  struct snd_soc_dai *dai)
404 {
405         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
406         int ret = 0;
407
408         mutex_lock(&hcp->current_stream_lock);
409         if (!hcp->current_stream) {
410                 hcp->current_stream = substream;
411         } else if (hcp->current_stream != substream) {
412                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
413                 ret = -EINVAL;
414         }
415         mutex_unlock(&hcp->current_stream_lock);
416
417         return ret;
418 }
419
420 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
421                               struct snd_soc_dai *dai)
422 {
423         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
424         int ret = 0;
425
426         dev_dbg(dai->dev, "%s()\n", __func__);
427
428         ret = hdmi_codec_new_stream(substream, dai);
429         if (ret)
430                 return ret;
431
432         if (hcp->hcd.ops->audio_startup) {
433                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
434                 if (ret) {
435                         mutex_lock(&hcp->current_stream_lock);
436                         hcp->current_stream = NULL;
437                         mutex_unlock(&hcp->current_stream_lock);
438                         return ret;
439                 }
440         }
441
442         if (hcp->hcd.ops->get_eld) {
443                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
444                                             hcp->eld, sizeof(hcp->eld));
445
446                 if (!ret) {
447                         ret = snd_pcm_hw_constraint_eld(substream->runtime,
448                                                         hcp->eld);
449                         if (ret)
450                                 return ret;
451                 }
452                 /* Select chmap supported */
453                 hdmi_codec_eld_chmap(hcp);
454         }
455         return 0;
456 }
457
458 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
459                                 struct snd_soc_dai *dai)
460 {
461         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
462
463         dev_dbg(dai->dev, "%s()\n", __func__);
464
465         WARN_ON(hcp->current_stream != substream);
466
467         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
468         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
469
470         mutex_lock(&hcp->current_stream_lock);
471         hcp->current_stream = NULL;
472         mutex_unlock(&hcp->current_stream_lock);
473 }
474
475 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
476                                 struct snd_pcm_hw_params *params,
477                                 struct snd_soc_dai *dai)
478 {
479         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
480         struct hdmi_codec_params hp = {
481                 .iec = {
482                         .status = { 0 },
483                         .subcode = { 0 },
484                         .pad = 0,
485                         .dig_subframe = { 0 },
486                 }
487         };
488         int ret, idx;
489
490         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
491                 params_width(params), params_rate(params),
492                 params_channels(params));
493
494         if (params_width(params) > 24)
495                 params->msbits = 24;
496
497         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
498                                                        sizeof(hp.iec.status));
499         if (ret < 0) {
500                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
501                         ret);
502                 return ret;
503         }
504
505         ret = hdmi_codec_new_stream(substream, dai);
506         if (ret)
507                 return ret;
508
509         hdmi_audio_infoframe_init(&hp.cea);
510         hp.cea.channels = params_channels(params);
511         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
512         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
513         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
514
515         /* Select a channel allocation that matches with ELD and pcm channels */
516         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
517         if (idx < 0) {
518                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
519                         idx);
520                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
521                 return idx;
522         }
523         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
524         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
525
526         hp.sample_width = params_width(params);
527         hp.sample_rate = params_rate(params);
528         hp.channels = params_channels(params);
529
530         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
531                                        &hcp->daifmt[dai->id], &hp);
532 }
533
534 static int hdmi_codec_set_fmt(struct snd_soc_dai *dai,
535                               unsigned int fmt)
536 {
537         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
538         struct hdmi_codec_daifmt cf = { 0 };
539         int ret = 0;
540
541         dev_dbg(dai->dev, "%s()\n", __func__);
542
543         if (dai->id == DAI_ID_SPDIF) {
544                 cf.fmt = HDMI_SPDIF;
545         } else {
546                 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
547                 case SND_SOC_DAIFMT_CBM_CFM:
548                         cf.bit_clk_master = 1;
549                         cf.frame_clk_master = 1;
550                         break;
551                 case SND_SOC_DAIFMT_CBS_CFM:
552                         cf.frame_clk_master = 1;
553                         break;
554                 case SND_SOC_DAIFMT_CBM_CFS:
555                         cf.bit_clk_master = 1;
556                         break;
557                 case SND_SOC_DAIFMT_CBS_CFS:
558                         break;
559                 default:
560                         return -EINVAL;
561                 }
562
563                 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
564                 case SND_SOC_DAIFMT_NB_NF:
565                         break;
566                 case SND_SOC_DAIFMT_NB_IF:
567                         cf.frame_clk_inv = 1;
568                         break;
569                 case SND_SOC_DAIFMT_IB_NF:
570                         cf.bit_clk_inv = 1;
571                         break;
572                 case SND_SOC_DAIFMT_IB_IF:
573                         cf.frame_clk_inv = 1;
574                         cf.bit_clk_inv = 1;
575                         break;
576                 }
577
578                 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
579                 case SND_SOC_DAIFMT_I2S:
580                         cf.fmt = HDMI_I2S;
581                         break;
582                 case SND_SOC_DAIFMT_DSP_A:
583                         cf.fmt = HDMI_DSP_A;
584                         break;
585                 case SND_SOC_DAIFMT_DSP_B:
586                         cf.fmt = HDMI_DSP_B;
587                         break;
588                 case SND_SOC_DAIFMT_RIGHT_J:
589                         cf.fmt = HDMI_RIGHT_J;
590                         break;
591                 case SND_SOC_DAIFMT_LEFT_J:
592                         cf.fmt = HDMI_LEFT_J;
593                         break;
594                 case SND_SOC_DAIFMT_AC97:
595                         cf.fmt = HDMI_AC97;
596                         break;
597                 default:
598                         dev_err(dai->dev, "Invalid DAI interface format\n");
599                         return -EINVAL;
600                 }
601         }
602
603         hcp->daifmt[dai->id] = cf;
604
605         return ret;
606 }
607
608 static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute)
609 {
610         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
611
612         dev_dbg(dai->dev, "%s()\n", __func__);
613
614         if (hcp->hcd.ops->digital_mute)
615                 return hcp->hcd.ops->digital_mute(dai->dev->parent,
616                                                   hcp->hcd.data, mute);
617
618         return 0;
619 }
620
621 static const struct snd_soc_dai_ops hdmi_dai_ops = {
622         .startup        = hdmi_codec_startup,
623         .shutdown       = hdmi_codec_shutdown,
624         .hw_params      = hdmi_codec_hw_params,
625         .set_fmt        = hdmi_codec_set_fmt,
626         .digital_mute   = hdmi_codec_digital_mute,
627 };
628
629
630 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
631                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
632                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
633                          SNDRV_PCM_RATE_192000)
634
635 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
636                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
637                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
638                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
639
640 /*
641  * This list is only for formats allowed on the I2S bus. So there is
642  * some formats listed that are not supported by HDMI interface. For
643  * instance allowing the 32-bit formats enables 24-precision with CPU
644  * DAIs that do not support 24-bit formats. If the extra formats cause
645  * problems, we should add the video side driver an option to disable
646  * them.
647  */
648 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
649                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
650                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
651                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
652                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
653
654 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
655                               struct snd_soc_dai *dai)
656 {
657         struct snd_soc_dai_driver *drv = dai->driver;
658         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
659         struct snd_kcontrol *kctl;
660         struct snd_kcontrol_new hdmi_eld_ctl = {
661                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
662                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
663                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
664                 .name   = "ELD",
665                 .info   = hdmi_eld_ctl_info,
666                 .get    = hdmi_eld_ctl_get,
667                 .device = rtd->pcm->device,
668         };
669         int ret;
670
671         dev_dbg(dai->dev, "%s()\n", __func__);
672
673         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
674                                       NULL, drv->playback.channels_max, 0,
675                                       &hcp->chmap_info);
676         if (ret < 0)
677                 return ret;
678
679         /* override handlers */
680         hcp->chmap_info->private_data = hcp;
681         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
682
683         /* default chmap supported is stereo */
684         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
685         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
686
687         /* add ELD ctl with the device number corresponding to the PCM stream */
688         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
689         if (!kctl)
690                 return -ENOMEM;
691
692         return snd_ctl_add(rtd->card->snd_card, kctl);
693 }
694
695 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
696         .name = "i2s-hifi",
697         .id = DAI_ID_I2S,
698         .playback = {
699                 .stream_name = "I2S Playback",
700                 .channels_min = 2,
701                 .channels_max = 8,
702                 .rates = HDMI_RATES,
703                 .formats = I2S_FORMATS,
704                 .sig_bits = 24,
705         },
706         .ops = &hdmi_dai_ops,
707         .pcm_new = hdmi_codec_pcm_new,
708 };
709
710 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
711         .name = "spdif-hifi",
712         .id = DAI_ID_SPDIF,
713         .playback = {
714                 .stream_name = "SPDIF Playback",
715                 .channels_min = 2,
716                 .channels_max = 2,
717                 .rates = HDMI_RATES,
718                 .formats = SPDIF_FORMATS,
719         },
720         .ops = &hdmi_dai_ops,
721         .pcm_new = hdmi_codec_pcm_new,
722 };
723
724 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
725                                  struct device_node *endpoint)
726 {
727         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
728         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
729
730         if (hcp->hcd.ops->get_dai_id)
731                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
732
733         return ret;
734 }
735
736 static const struct snd_soc_codec_driver hdmi_codec = {
737         .component_driver = {
738                 .dapm_widgets           = hdmi_widgets,
739                 .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
740                 .dapm_routes            = hdmi_routes,
741                 .num_dapm_routes        = ARRAY_SIZE(hdmi_routes),
742                 .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
743         },
744 };
745
746 static int hdmi_codec_probe(struct platform_device *pdev)
747 {
748         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
749         struct device *dev = &pdev->dev;
750         struct hdmi_codec_priv *hcp;
751         int dai_count, i = 0;
752         int ret;
753
754         dev_dbg(dev, "%s()\n", __func__);
755
756         if (!hcd) {
757                 dev_err(dev, "%s: No plalform data\n", __func__);
758                 return -EINVAL;
759         }
760
761         dai_count = hcd->i2s + hcd->spdif;
762         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
763             !hcd->ops->audio_shutdown) {
764                 dev_err(dev, "%s: Invalid parameters\n", __func__);
765                 return -EINVAL;
766         }
767
768         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
769         if (!hcp)
770                 return -ENOMEM;
771
772         hcp->hcd = *hcd;
773         mutex_init(&hcp->current_stream_lock);
774
775         hcp->daidrv = devm_kzalloc(dev, dai_count * sizeof(*hcp->daidrv),
776                                    GFP_KERNEL);
777         if (!hcp->daidrv)
778                 return -ENOMEM;
779
780         if (hcd->i2s) {
781                 hcp->daidrv[i] = hdmi_i2s_dai;
782                 hcp->daidrv[i].playback.channels_max =
783                         hcd->max_i2s_channels;
784                 i++;
785         }
786
787         if (hcd->spdif)
788                 hcp->daidrv[i] = hdmi_spdif_dai;
789
790         ret = snd_soc_register_codec(dev, &hdmi_codec, hcp->daidrv,
791                                      dai_count);
792         if (ret) {
793                 dev_err(dev, "%s: snd_soc_register_codec() failed (%d)\n",
794                         __func__, ret);
795                 return ret;
796         }
797
798         dev_set_drvdata(dev, hcp);
799         return 0;
800 }
801
802 static int hdmi_codec_remove(struct platform_device *pdev)
803 {
804         struct device *dev = &pdev->dev;
805         struct hdmi_codec_priv *hcp;
806
807         hcp = dev_get_drvdata(dev);
808         kfree(hcp->chmap_info);
809         snd_soc_unregister_codec(dev);
810
811         return 0;
812 }
813
814 static struct platform_driver hdmi_codec_driver = {
815         .driver = {
816                 .name = HDMI_CODEC_DRV_NAME,
817         },
818         .probe = hdmi_codec_probe,
819         .remove = hdmi_codec_remove,
820 };
821
822 module_platform_driver(hdmi_codec_driver);
823
824 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
825 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
826 MODULE_LICENSE("GPL");
827 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);