diff options
Diffstat (limited to 'sound/soc/ti')
| -rw-r--r-- | sound/soc/ti/davinci-mcasp.c | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c index 87ae19329e71..7aa3c32e4a49 100644 --- a/sound/soc/ti/davinci-mcasp.c +++ b/sound/soc/ti/davinci-mcasp.c @@ -109,6 +109,7 @@ struct davinci_mcasp { /* Used for comstraint setting on the second stream */ u32 channels; + int max_format_width; u8 active_serializers[2]; #ifdef CONFIG_GPIOLIB @@ -766,6 +767,8 @@ static int davinci_config_channel_size(struct davinci_mcasp *mcasp, if (mcasp->slot_width) slot_width = mcasp->slot_width; + else if (mcasp->max_format_width) + slot_width = mcasp->max_format_width; else slot_width = sample_width; /* @@ -1233,8 +1236,11 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, davinci_config_channel_size(mcasp, word_length); - if (mcasp->op_mode == DAVINCI_MCASP_IIS_MODE) + if (mcasp->op_mode == DAVINCI_MCASP_IIS_MODE) { mcasp->channels = channels; + if (!mcasp->max_format_width) + mcasp->max_format_width = word_length; + } return 0; } @@ -1286,6 +1292,28 @@ static int davinci_mcasp_hw_rule_slot_width(struct snd_pcm_hw_params *params, return snd_mask_refine(fmt, &nfmt); } +static int davinci_mcasp_hw_rule_format_width(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct davinci_mcasp_ruledata *rd = rule->private; + struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_mask nfmt; + int i, format_width; + + snd_mask_none(&nfmt); + format_width = rd->mcasp->max_format_width; + + for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) { + if (snd_mask_test(fmt, i)) { + if (snd_pcm_format_width(i) == format_width) { + snd_mask_set(&nfmt, i); + } + } + } + + return snd_mask_refine(fmt, &nfmt); +} + static const unsigned int davinci_mcasp_dai_rates[] = { 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, 88200, 96000, 176400, 192000, @@ -1463,7 +1491,20 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &mcasp->chconstr[substream->stream]); - if (mcasp->slot_width) { + if (mcasp->max_format_width) { + /* + * Only allow formats which require same amount of bits on the + * bus as the currently running stream + */ + ret = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_FORMAT, + davinci_mcasp_hw_rule_format_width, + ruledata, + SNDRV_PCM_HW_PARAM_FORMAT, -1); + if (ret) + return ret; + } + else if (mcasp->slot_width) { /* Only allow formats require <= slot_width bits on the bus */ ret = snd_pcm_hw_rule_add(substream->runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, @@ -1514,8 +1555,10 @@ static void davinci_mcasp_shutdown(struct snd_pcm_substream *substream, if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE) return; - if (!cpu_dai->active) + if (!cpu_dai->active) { mcasp->channels = 0; + mcasp->max_format_width = 0; + } } static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = { @@ -1571,7 +1614,6 @@ static struct snd_soc_dai_driver davinci_mcasp_dai[] = { }, .ops = &davinci_mcasp_dai_ops, - .symmetric_samplebits = 1, .symmetric_rates = 1, }, { |