~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/hdmi-codec.c

Version: ~ [ linux-5.10-rc6 ] ~ [ linux-5.9.12 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.81 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.161 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.210 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.247 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.247 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  * ALSA SoC codec for HDMI encoder drivers
  4  * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
  5  * Author: Jyri Sarha <jsarha@ti.com>
  6  */
  7 #include <linux/module.h>
  8 #include <linux/string.h>
  9 #include <sound/core.h>
 10 #include <sound/jack.h>
 11 #include <sound/pcm.h>
 12 #include <sound/pcm_params.h>
 13 #include <sound/soc.h>
 14 #include <sound/tlv.h>
 15 #include <sound/pcm_drm_eld.h>
 16 #include <sound/hdmi-codec.h>
 17 #include <sound/pcm_iec958.h>
 18 
 19 #include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */
 20 
 21 #define HDMI_CODEC_CHMAP_IDX_UNKNOWN  -1
 22 
 23 struct hdmi_codec_channel_map_table {
 24         unsigned char map;      /* ALSA API channel map position */
 25         unsigned long spk_mask;         /* speaker position bit mask */
 26 };
 27 
 28 /*
 29  * CEA speaker placement for HDMI 1.4:
 30  *
 31  *  FL  FLC   FC   FRC   FR   FRW
 32  *
 33  *                                  LFE
 34  *
 35  *  RL  RLC   RC   RRC   RR
 36  *
 37  *  Speaker placement has to be extended to support HDMI 2.0
 38  */
 39 enum hdmi_codec_cea_spk_placement {
 40         FL  = BIT(0),   /* Front Left           */
 41         FC  = BIT(1),   /* Front Center         */
 42         FR  = BIT(2),   /* Front Right          */
 43         FLC = BIT(3),   /* Front Left Center    */
 44         FRC = BIT(4),   /* Front Right Center   */
 45         RL  = BIT(5),   /* Rear Left            */
 46         RC  = BIT(6),   /* Rear Center          */
 47         RR  = BIT(7),   /* Rear Right           */
 48         RLC = BIT(8),   /* Rear Left Center     */
 49         RRC = BIT(9),   /* Rear Right Center    */
 50         LFE = BIT(10),  /* Low Frequency Effect */
 51 };
 52 
 53 /*
 54  * cea Speaker allocation structure
 55  */
 56 struct hdmi_codec_cea_spk_alloc {
 57         const int ca_id;
 58         unsigned int n_ch;
 59         unsigned long mask;
 60 };
 61 
 62 /* Channel maps  stereo HDMI */
 63 static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
 64         { .channels = 2,
 65           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
 66         { }
 67 };
 68 
 69 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
 70 static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
 71         { .channels = 2, /* CA_ID 0x00 */
 72           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
 73         { .channels = 4, /* CA_ID 0x01 */
 74           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 75                    SNDRV_CHMAP_NA } },
 76         { .channels = 4, /* CA_ID 0x02 */
 77           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 78                    SNDRV_CHMAP_FC } },
 79         { .channels = 4, /* CA_ID 0x03 */
 80           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 81                    SNDRV_CHMAP_FC } },
 82         { .channels = 6, /* CA_ID 0x04 */
 83           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 84                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 85         { .channels = 6, /* CA_ID 0x05 */
 86           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 87                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 88         { .channels = 6, /* CA_ID 0x06 */
 89           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 90                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 91         { .channels = 6, /* CA_ID 0x07 */
 92           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 93                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
 94         { .channels = 6, /* CA_ID 0x08 */
 95           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
 96                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 97         { .channels = 6, /* CA_ID 0x09 */
 98           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
 99                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
100         { .channels = 6, /* CA_ID 0x0A */
101           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
102                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
103         { .channels = 6, /* CA_ID 0x0B */
104           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
105                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
106         { .channels = 8, /* CA_ID 0x0C */
107           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
108                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
109                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
110         { .channels = 8, /* CA_ID 0x0D */
111           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
112                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
113                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
114         { .channels = 8, /* CA_ID 0x0E */
115           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
116                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
117                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
118         { .channels = 8, /* CA_ID 0x0F */
119           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
120                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
121                    SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
122         { .channels = 8, /* CA_ID 0x10 */
123           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
124                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
125                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
126         { .channels = 8, /* CA_ID 0x11 */
127           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
128                    SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
129                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
130         { .channels = 8, /* CA_ID 0x12 */
131           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
132                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
133                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
134         { .channels = 8, /* CA_ID 0x13 */
135           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
136                    SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
137                    SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
138         { .channels = 8, /* CA_ID 0x14 */
139           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
140                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
141                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
142         { .channels = 8, /* CA_ID 0x15 */
143           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
144                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
145                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
146         { .channels = 8, /* CA_ID 0x16 */
147           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
148                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
149                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
150         { .channels = 8, /* CA_ID 0x17 */
151           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
152                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
153                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
154         { .channels = 8, /* CA_ID 0x18 */
155           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
156                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
157                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
158         { .channels = 8, /* CA_ID 0x19 */
159           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
160                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
161                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
162         { .channels = 8, /* CA_ID 0x1A */
163           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
164                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
165                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
166         { .channels = 8, /* CA_ID 0x1B */
167           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
168                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
169                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
170         { .channels = 8, /* CA_ID 0x1C */
171           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
172                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
173                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
174         { .channels = 8, /* CA_ID 0x1D */
175           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
176                    SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
177                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
178         { .channels = 8, /* CA_ID 0x1E */
179           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
180                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
181                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
182         { .channels = 8, /* CA_ID 0x1F */
183           .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
184                    SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
185                    SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
186         { }
187 };
188 
189 /*
190  * hdmi_codec_channel_alloc: speaker configuration available for CEA
191  *
192  * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
193  * The preceding ones have better chances to be selected by
194  * hdmi_codec_get_ch_alloc_table_idx().
195  */
196 static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
197         { .ca_id = 0x00, .n_ch = 2,
198           .mask = FL | FR},
199         /* 2.1 */
200         { .ca_id = 0x01, .n_ch = 4,
201           .mask = FL | FR | LFE},
202         /* Dolby Surround */
203         { .ca_id = 0x02, .n_ch = 4,
204           .mask = FL | FR | FC },
205         /* surround51 */
206         { .ca_id = 0x0b, .n_ch = 6,
207           .mask = FL | FR | LFE | FC | RL | RR},
208         /* surround40 */
209         { .ca_id = 0x08, .n_ch = 6,
210           .mask = FL | FR | RL | RR },
211         /* surround41 */
212         { .ca_id = 0x09, .n_ch = 6,
213           .mask = FL | FR | LFE | RL | RR },
214         /* surround50 */
215         { .ca_id = 0x0a, .n_ch = 6,
216           .mask = FL | FR | FC | RL | RR },
217         /* 6.1 */
218         { .ca_id = 0x0f, .n_ch = 8,
219           .mask = FL | FR | LFE | FC | RL | RR | RC },
220         /* surround71 */
221         { .ca_id = 0x13, .n_ch = 8,
222           .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
223         /* others */
224         { .ca_id = 0x03, .n_ch = 8,
225           .mask = FL | FR | LFE | FC },
226         { .ca_id = 0x04, .n_ch = 8,
227           .mask = FL | FR | RC},
228         { .ca_id = 0x05, .n_ch = 8,
229           .mask = FL | FR | LFE | RC },
230         { .ca_id = 0x06, .n_ch = 8,
231           .mask = FL | FR | FC | RC },
232         { .ca_id = 0x07, .n_ch = 8,
233           .mask = FL | FR | LFE | FC | RC },
234         { .ca_id = 0x0c, .n_ch = 8,
235           .mask = FL | FR | RC | RL | RR },
236         { .ca_id = 0x0d, .n_ch = 8,
237           .mask = FL | FR | LFE | RL | RR | RC },
238         { .ca_id = 0x0e, .n_ch = 8,
239           .mask = FL | FR | FC | RL | RR | RC },
240         { .ca_id = 0x10, .n_ch = 8,
241           .mask = FL | FR | RL | RR | RLC | RRC },
242         { .ca_id = 0x11, .n_ch = 8,
243           .mask = FL | FR | LFE | RL | RR | RLC | RRC },
244         { .ca_id = 0x12, .n_ch = 8,
245           .mask = FL | FR | FC | RL | RR | RLC | RRC },
246         { .ca_id = 0x14, .n_ch = 8,
247           .mask = FL | FR | FLC | FRC },
248         { .ca_id = 0x15, .n_ch = 8,
249           .mask = FL | FR | LFE | FLC | FRC },
250         { .ca_id = 0x16, .n_ch = 8,
251           .mask = FL | FR | FC | FLC | FRC },
252         { .ca_id = 0x17, .n_ch = 8,
253           .mask = FL | FR | LFE | FC | FLC | FRC },
254         { .ca_id = 0x18, .n_ch = 8,
255           .mask = FL | FR | RC | FLC | FRC },
256         { .ca_id = 0x19, .n_ch = 8,
257           .mask = FL | FR | LFE | RC | FLC | FRC },
258         { .ca_id = 0x1a, .n_ch = 8,
259           .mask = FL | FR | RC | FC | FLC | FRC },
260         { .ca_id = 0x1b, .n_ch = 8,
261           .mask = FL | FR | LFE | RC | FC | FLC | FRC },
262         { .ca_id = 0x1c, .n_ch = 8,
263           .mask = FL | FR | RL | RR | FLC | FRC },
264         { .ca_id = 0x1d, .n_ch = 8,
265           .mask = FL | FR | LFE | RL | RR | FLC | FRC },
266         { .ca_id = 0x1e, .n_ch = 8,
267           .mask = FL | FR | FC | RL | RR | FLC | FRC },
268         { .ca_id = 0x1f, .n_ch = 8,
269           .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
270 };
271 
272 struct hdmi_codec_priv {
273         struct hdmi_codec_pdata hcd;
274         uint8_t eld[MAX_ELD_BYTES];
275         struct snd_pcm_chmap *chmap_info;
276         unsigned int chmap_idx;
277         struct mutex lock;
278         bool busy;
279         struct snd_soc_jack *jack;
280         unsigned int jack_status;
281 };
282 
283 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
284         SND_SOC_DAPM_OUTPUT("TX"),
285 };
286 
287 enum {
288         DAI_ID_I2S = 0,
289         DAI_ID_SPDIF,
290 };
291 
292 static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
293                              struct snd_ctl_elem_info *uinfo)
294 {
295         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
296         uinfo->count = sizeof_field(struct hdmi_codec_priv, eld);
297 
298         return 0;
299 }
300 
301 static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
302                             struct snd_ctl_elem_value *ucontrol)
303 {
304         struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
305         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
306 
307         memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld));
308 
309         return 0;
310 }
311 
312 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
313 {
314         int i;
315         static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
316                 [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
317                 [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
318         };
319         unsigned long spk_mask = 0;
320 
321         for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
322                 if (spk_alloc & (1 << i))
323                         spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
324         }
325 
326         return spk_mask;
327 }
328 
329 static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
330 {
331         u8 spk_alloc;
332         unsigned long spk_mask;
333 
334         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
335         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
336 
337         /* Detect if only stereo supported, else return 8 channels mappings */
338         if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
339                 hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
340         else
341                 hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
342 }
343 
344 static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
345                                              unsigned char channels)
346 {
347         int i;
348         u8 spk_alloc;
349         unsigned long spk_mask;
350         const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
351 
352         spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
353         spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
354 
355         for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
356                 /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
357                 if (!spk_alloc && cap->ca_id == 0)
358                         return i;
359                 if (cap->n_ch != channels)
360                         continue;
361                 if (!(cap->mask == (spk_mask & cap->mask)))
362                         continue;
363                 return i;
364         }
365 
366         return -EINVAL;
367 }
368 static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
369                               struct snd_ctl_elem_value *ucontrol)
370 {
371         unsigned const char *map;
372         unsigned int i;
373         struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
374         struct hdmi_codec_priv *hcp = info->private_data;
375 
376         map = info->chmap[hcp->chmap_idx].map;
377 
378         for (i = 0; i < info->max_channels; i++) {
379                 if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
380                         ucontrol->value.integer.value[i] = 0;
381                 else
382                         ucontrol->value.integer.value[i] = map[i];
383         }
384 
385         return 0;
386 }
387 
388 static int hdmi_codec_startup(struct snd_pcm_substream *substream,
389                               struct snd_soc_dai *dai)
390 {
391         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
392         int ret = 0;
393 
394         mutex_lock(&hcp->lock);
395         if (hcp->busy) {
396                 dev_err(dai->dev, "Only one simultaneous stream supported!\n");
397                 mutex_unlock(&hcp->lock);
398                 return -EINVAL;
399         }
400 
401         if (hcp->hcd.ops->audio_startup) {
402                 ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data);
403                 if (ret)
404                         goto err;
405         }
406 
407         if (hcp->hcd.ops->get_eld) {
408                 ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data,
409                                             hcp->eld, sizeof(hcp->eld));
410                 if (ret)
411                         goto err;
412 
413                 ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld);
414                 if (ret)
415                         goto err;
416 
417                 /* Select chmap supported */
418                 hdmi_codec_eld_chmap(hcp);
419         }
420 
421         hcp->busy = true;
422 
423 err:
424         mutex_unlock(&hcp->lock);
425         return ret;
426 }
427 
428 static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
429                                 struct snd_soc_dai *dai)
430 {
431         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
432 
433         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
434         hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
435 
436         mutex_lock(&hcp->lock);
437         hcp->busy = false;
438         mutex_unlock(&hcp->lock);
439 }
440 
441 static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
442                                 struct snd_pcm_hw_params *params,
443                                 struct snd_soc_dai *dai)
444 {
445         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
446         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
447         struct hdmi_codec_params hp = {
448                 .iec = {
449                         .status = { 0 },
450                         .subcode = { 0 },
451                         .pad = 0,
452                         .dig_subframe = { 0 },
453                 }
454         };
455         int ret, idx;
456 
457         dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
458                 params_width(params), params_rate(params),
459                 params_channels(params));
460 
461         ret = snd_pcm_create_iec958_consumer_hw_params(params, hp.iec.status,
462                                                        sizeof(hp.iec.status));
463         if (ret < 0) {
464                 dev_err(dai->dev, "Creating IEC958 channel status failed %d\n",
465                         ret);
466                 return ret;
467         }
468 
469         hdmi_audio_infoframe_init(&hp.cea);
470         hp.cea.channels = params_channels(params);
471         hp.cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
472         hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
473         hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
474 
475         /* Select a channel allocation that matches with ELD and pcm channels */
476         idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
477         if (idx < 0) {
478                 dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
479                         idx);
480                 hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
481                 return idx;
482         }
483         hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
484         hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
485 
486         hp.sample_width = params_width(params);
487         hp.sample_rate = params_rate(params);
488         hp.channels = params_channels(params);
489 
490         return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data,
491                                        cf, &hp);
492 }
493 
494 static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai,
495                                   unsigned int fmt)
496 {
497         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
498 
499         /* Reset daifmt */
500         memset(cf, 0, sizeof(*cf));
501 
502         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
503         case SND_SOC_DAIFMT_CBM_CFM:
504                 cf->bit_clk_master = 1;
505                 cf->frame_clk_master = 1;
506                 break;
507         case SND_SOC_DAIFMT_CBS_CFM:
508                 cf->frame_clk_master = 1;
509                 break;
510         case SND_SOC_DAIFMT_CBM_CFS:
511                 cf->bit_clk_master = 1;
512                 break;
513         case SND_SOC_DAIFMT_CBS_CFS:
514                 break;
515         default:
516                 return -EINVAL;
517         }
518 
519         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
520         case SND_SOC_DAIFMT_NB_NF:
521                 break;
522         case SND_SOC_DAIFMT_NB_IF:
523                 cf->frame_clk_inv = 1;
524                 break;
525         case SND_SOC_DAIFMT_IB_NF:
526                 cf->bit_clk_inv = 1;
527                 break;
528         case SND_SOC_DAIFMT_IB_IF:
529                 cf->frame_clk_inv = 1;
530                 cf->bit_clk_inv = 1;
531                 break;
532         }
533 
534         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
535         case SND_SOC_DAIFMT_I2S:
536                 cf->fmt = HDMI_I2S;
537                 break;
538         case SND_SOC_DAIFMT_DSP_A:
539                 cf->fmt = HDMI_DSP_A;
540                 break;
541         case SND_SOC_DAIFMT_DSP_B:
542                 cf->fmt = HDMI_DSP_B;
543                 break;
544         case SND_SOC_DAIFMT_RIGHT_J:
545                 cf->fmt = HDMI_RIGHT_J;
546                 break;
547         case SND_SOC_DAIFMT_LEFT_J:
548                 cf->fmt = HDMI_LEFT_J;
549                 break;
550         case SND_SOC_DAIFMT_AC97:
551                 cf->fmt = HDMI_AC97;
552                 break;
553         default:
554                 dev_err(dai->dev, "Invalid DAI interface format\n");
555                 return -EINVAL;
556         }
557 
558         return 0;
559 }
560 
561 static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction)
562 {
563         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
564 
565         /*
566          * ignore if direction was CAPTURE
567          * and it had .no_capture_mute flag
568          * see
569          *      snd_soc_dai_digital_mute()
570          */
571         if (hcp->hcd.ops->mute_stream &&
572             (direction == SNDRV_PCM_STREAM_PLAYBACK ||
573              !hcp->hcd.ops->no_capture_mute))
574                 return hcp->hcd.ops->mute_stream(dai->dev->parent,
575                                                  hcp->hcd.data,
576                                                  mute, direction);
577 
578         return -ENOTSUPP;
579 }
580 
581 static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = {
582         .startup        = hdmi_codec_startup,
583         .shutdown       = hdmi_codec_shutdown,
584         .hw_params      = hdmi_codec_hw_params,
585         .set_fmt        = hdmi_codec_i2s_set_fmt,
586         .mute_stream    = hdmi_codec_mute,
587 };
588 
589 static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = {
590         .startup        = hdmi_codec_startup,
591         .shutdown       = hdmi_codec_shutdown,
592         .hw_params      = hdmi_codec_hw_params,
593         .mute_stream    = hdmi_codec_mute,
594 };
595 
596 #define HDMI_RATES      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
597                          SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
598                          SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
599                          SNDRV_PCM_RATE_192000)
600 
601 #define SPDIF_FORMATS   (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
602                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
603                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
604                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
605 
606 /*
607  * This list is only for formats allowed on the I2S bus. So there is
608  * some formats listed that are not supported by HDMI interface. For
609  * instance allowing the 32-bit formats enables 24-precision with CPU
610  * DAIs that do not support 24-bit formats. If the extra formats cause
611  * problems, we should add the video side driver an option to disable
612  * them.
613  */
614 #define I2S_FORMATS     (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |\
615                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\
616                          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\
617                          SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
618                          SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
619 
620 static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
621                               struct snd_soc_dai *dai)
622 {
623         struct snd_soc_dai_driver *drv = dai->driver;
624         struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
625         struct snd_kcontrol *kctl;
626         struct snd_kcontrol_new hdmi_eld_ctl = {
627                 .access = SNDRV_CTL_ELEM_ACCESS_READ |
628                           SNDRV_CTL_ELEM_ACCESS_VOLATILE,
629                 .iface  = SNDRV_CTL_ELEM_IFACE_PCM,
630                 .name   = "ELD",
631                 .info   = hdmi_eld_ctl_info,
632                 .get    = hdmi_eld_ctl_get,
633                 .device = rtd->pcm->device,
634         };
635         int ret;
636 
637         ret =  snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
638                                       NULL, drv->playback.channels_max, 0,
639                                       &hcp->chmap_info);
640         if (ret < 0)
641                 return ret;
642 
643         /* override handlers */
644         hcp->chmap_info->private_data = hcp;
645         hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
646 
647         /* default chmap supported is stereo */
648         hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
649         hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
650 
651         /* add ELD ctl with the device number corresponding to the PCM stream */
652         kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component);
653         if (!kctl)
654                 return -ENOMEM;
655 
656         return snd_ctl_add(rtd->card->snd_card, kctl);
657 }
658 
659 static int hdmi_dai_probe(struct snd_soc_dai *dai)
660 {
661         struct snd_soc_dapm_context *dapm;
662         struct hdmi_codec_daifmt *daifmt;
663         struct snd_soc_dapm_route route = {
664                 .sink = "TX",
665                 .source = dai->driver->playback.stream_name,
666         };
667         int ret;
668 
669         dapm = snd_soc_component_get_dapm(dai->component);
670         ret = snd_soc_dapm_add_routes(dapm, &route, 1);
671         if (ret)
672                 return ret;
673 
674         daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL);
675         if (!daifmt)
676                 return -ENOMEM;
677 
678         dai->playback_dma_data = daifmt;
679         return 0;
680 }
681 
682 static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp,
683                                    unsigned int jack_status)
684 {
685         if (hcp->jack && jack_status != hcp->jack_status) {
686                 snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT);
687                 hcp->jack_status = jack_status;
688         }
689 }
690 
691 static void plugged_cb(struct device *dev, bool plugged)
692 {
693         struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
694 
695         if (plugged)
696                 hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT);
697         else
698                 hdmi_codec_jack_report(hcp, 0);
699 }
700 
701 static int hdmi_codec_set_jack(struct snd_soc_component *component,
702                                struct snd_soc_jack *jack,
703                                void *data)
704 {
705         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
706         int ret = -EOPNOTSUPP;
707 
708         if (hcp->hcd.ops->hook_plugged_cb) {
709                 hcp->jack = jack;
710                 ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
711                                                     hcp->hcd.data,
712                                                     plugged_cb,
713                                                     component->dev);
714                 if (ret)
715                         hcp->jack = NULL;
716         }
717         return ret;
718 }
719 
720 static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai)
721 {
722         struct hdmi_codec_daifmt *cf = dai->playback_dma_data;
723         int ret;
724 
725         ret = hdmi_dai_probe(dai);
726         if (ret)
727                 return ret;
728 
729         cf = dai->playback_dma_data;
730         cf->fmt = HDMI_SPDIF;
731 
732         return 0;
733 }
734 
735 static int hdmi_codec_dai_remove(struct snd_soc_dai *dai)
736 {
737         kfree(dai->playback_dma_data);
738         return 0;
739 }
740 
741 static const struct snd_soc_dai_driver hdmi_i2s_dai = {
742         .name = "i2s-hifi",
743         .id = DAI_ID_I2S,
744         .probe = hdmi_dai_probe,
745         .remove = hdmi_codec_dai_remove,
746         .playback = {
747                 .stream_name = "I2S Playback",
748                 .channels_min = 2,
749                 .channels_max = 8,
750                 .rates = HDMI_RATES,
751                 .formats = I2S_FORMATS,
752                 .sig_bits = 24,
753         },
754         .ops = &hdmi_codec_i2s_dai_ops,
755         .pcm_new = hdmi_codec_pcm_new,
756 };
757 
758 static const struct snd_soc_dai_driver hdmi_spdif_dai = {
759         .name = "spdif-hifi",
760         .id = DAI_ID_SPDIF,
761         .probe = hdmi_dai_spdif_probe,
762         .remove = hdmi_codec_dai_remove,
763         .playback = {
764                 .stream_name = "SPDIF Playback",
765                 .channels_min = 2,
766                 .channels_max = 2,
767                 .rates = HDMI_RATES,
768                 .formats = SPDIF_FORMATS,
769         },
770         .ops = &hdmi_codec_spdif_dai_ops,
771         .pcm_new = hdmi_codec_pcm_new,
772 };
773 
774 static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
775                                  struct device_node *endpoint)
776 {
777         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
778         int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
779 
780         if (hcp->hcd.ops->get_dai_id)
781                 ret = hcp->hcd.ops->get_dai_id(component, endpoint);
782 
783         return ret;
784 }
785 
786 static void hdmi_remove(struct snd_soc_component *component)
787 {
788         struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component);
789 
790         if (hcp->hcd.ops->hook_plugged_cb)
791                 hcp->hcd.ops->hook_plugged_cb(component->dev->parent,
792                                               hcp->hcd.data, NULL, NULL);
793 }
794 
795 static const struct snd_soc_component_driver hdmi_driver = {
796         .remove                 = hdmi_remove,
797         .dapm_widgets           = hdmi_widgets,
798         .num_dapm_widgets       = ARRAY_SIZE(hdmi_widgets),
799         .of_xlate_dai_id        = hdmi_of_xlate_dai_id,
800         .idle_bias_on           = 1,
801         .use_pmdown_time        = 1,
802         .endianness             = 1,
803         .non_legacy_dai_naming  = 1,
804         .set_jack               = hdmi_codec_set_jack,
805 };
806 
807 static int hdmi_codec_probe(struct platform_device *pdev)
808 {
809         struct hdmi_codec_pdata *hcd = pdev->dev.platform_data;
810         struct snd_soc_dai_driver *daidrv;
811         struct device *dev = &pdev->dev;
812         struct hdmi_codec_priv *hcp;
813         int dai_count, i = 0;
814         int ret;
815 
816         if (!hcd) {
817                 dev_err(dev, "%s: No platform data\n", __func__);
818                 return -EINVAL;
819         }
820 
821         dai_count = hcd->i2s + hcd->spdif;
822         if (dai_count < 1 || !hcd->ops || !hcd->ops->hw_params ||
823             !hcd->ops->audio_shutdown) {
824                 dev_err(dev, "%s: Invalid parameters\n", __func__);
825                 return -EINVAL;
826         }
827 
828         hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL);
829         if (!hcp)
830                 return -ENOMEM;
831 
832         hcp->hcd = *hcd;
833         mutex_init(&hcp->lock);
834 
835         daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL);
836         if (!daidrv)
837                 return -ENOMEM;
838 
839         if (hcd->i2s) {
840                 daidrv[i] = hdmi_i2s_dai;
841                 daidrv[i].playback.channels_max = hcd->max_i2s_channels;
842                 i++;
843         }
844 
845         if (hcd->spdif)
846                 daidrv[i] = hdmi_spdif_dai;
847 
848         dev_set_drvdata(dev, hcp);
849 
850         ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv,
851                                               dai_count);
852         if (ret) {
853                 dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n",
854                         __func__, ret);
855                 return ret;
856         }
857         return 0;
858 }
859 
860 static struct platform_driver hdmi_codec_driver = {
861         .driver = {
862                 .name = HDMI_CODEC_DRV_NAME,
863         },
864         .probe = hdmi_codec_probe,
865 };
866 
867 module_platform_driver(hdmi_codec_driver);
868 
869 MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
870 MODULE_DESCRIPTION("HDMI Audio Codec Driver");
871 MODULE_LICENSE("GPL");
872 MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);
873 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp