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authorPeter Ujfalusi <peter.ujfalusi@nokia.com>2009-03-27 04:39:08 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-04-02 11:34:16 -0400
commit7220b9f4bd4fad41f6f7299fe74c2c38ec85d793 (patch)
tree6df98d0eb41a07c73afe0960d8eb4e618105e90a /sound/soc
parent31ad0f31c3a45ba489203eef7e71d3215005afbc (diff)
ASoC: TWL4030: Add constrains for second stream
In case of duplex mode (capture and playback at the same time), the second stream has to have the same parameters (rate, sample size) as the already running stream. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/twl4030.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index b07d8d68a939..4199498a8918 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -122,6 +122,9 @@ struct twl4030_priv {
122 unsigned int bypass_state; 122 unsigned int bypass_state;
123 unsigned int codec_powered; 123 unsigned int codec_powered;
124 unsigned int codec_muted; 124 unsigned int codec_muted;
125
126 struct snd_pcm_substream *master_substream;
127 struct snd_pcm_substream *slave_substream;
125}; 128};
126 129
127/* 130/*
@@ -1217,6 +1220,50 @@ static int twl4030_set_bias_level(struct snd_soc_codec *codec,
1217 return 0; 1220 return 0;
1218} 1221}
1219 1222
1223static int twl4030_startup(struct snd_pcm_substream *substream)
1224{
1225 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1226 struct snd_soc_device *socdev = rtd->socdev;
1227 struct snd_soc_codec *codec = socdev->codec;
1228 struct twl4030_priv *twl4030 = codec->private_data;
1229
1230 /* If we already have a playback or capture going then constrain
1231 * this substream to match it.
1232 */
1233 if (twl4030->master_substream) {
1234 struct snd_pcm_runtime *master_runtime;
1235 master_runtime = twl4030->master_substream->runtime;
1236
1237 snd_pcm_hw_constraint_minmax(substream->runtime,
1238 SNDRV_PCM_HW_PARAM_RATE,
1239 master_runtime->rate,
1240 master_runtime->rate);
1241
1242 snd_pcm_hw_constraint_minmax(substream->runtime,
1243 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
1244 master_runtime->sample_bits,
1245 master_runtime->sample_bits);
1246
1247 twl4030->slave_substream = substream;
1248 } else
1249 twl4030->master_substream = substream;
1250
1251 return 0;
1252}
1253
1254static void twl4030_shutdown(struct snd_pcm_substream *substream)
1255{
1256 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1257 struct snd_soc_device *socdev = rtd->socdev;
1258 struct snd_soc_codec *codec = socdev->codec;
1259 struct twl4030_priv *twl4030 = codec->private_data;
1260
1261 if (twl4030->master_substream == substream)
1262 twl4030->master_substream = twl4030->slave_substream;
1263
1264 twl4030->slave_substream = NULL;
1265}
1266
1220static int twl4030_hw_params(struct snd_pcm_substream *substream, 1267static int twl4030_hw_params(struct snd_pcm_substream *substream,
1221 struct snd_pcm_hw_params *params, 1268 struct snd_pcm_hw_params *params,
1222 struct snd_soc_dai *dai) 1269 struct snd_soc_dai *dai)
@@ -1224,8 +1271,13 @@ static int twl4030_hw_params(struct snd_pcm_substream *substream,
1224 struct snd_soc_pcm_runtime *rtd = substream->private_data; 1271 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1225 struct snd_soc_device *socdev = rtd->socdev; 1272 struct snd_soc_device *socdev = rtd->socdev;
1226 struct snd_soc_codec *codec = socdev->card->codec; 1273 struct snd_soc_codec *codec = socdev->card->codec;
1274 struct twl4030_priv *twl4030 = codec->private_data;
1227 u8 mode, old_mode, format, old_format; 1275 u8 mode, old_mode, format, old_format;
1228 1276
1277 if (substream == twl4030->slave_substream)
1278 /* Ignoring hw_params for slave substream */
1279 return 0;
1280
1229 /* bit rate */ 1281 /* bit rate */
1230 old_mode = twl4030_read_reg_cache(codec, 1282 old_mode = twl4030_read_reg_cache(codec,
1231 TWL4030_REG_CODEC_MODE) & ~TWL4030_CODECPDZ; 1283 TWL4030_REG_CODEC_MODE) & ~TWL4030_CODECPDZ;
@@ -1384,6 +1436,8 @@ static int twl4030_set_dai_fmt(struct snd_soc_dai *codec_dai,
1384#define TWL4030_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FORMAT_S24_LE) 1436#define TWL4030_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FORMAT_S24_LE)
1385 1437
1386static struct snd_soc_dai_ops twl4030_dai_ops = { 1438static struct snd_soc_dai_ops twl4030_dai_ops = {
1439 .startup = twl4030_startup,
1440 .shutdown = twl4030_shutdown,
1387 .hw_params = twl4030_hw_params, 1441 .hw_params = twl4030_hw_params,
1388 .set_sysclk = twl4030_set_dai_sysclk, 1442 .set_sysclk = twl4030_set_dai_sysclk,
1389 .set_fmt = twl4030_set_dai_fmt, 1443 .set_fmt = twl4030_set_dai_fmt,