diff options
| -rw-r--r-- | sound/soc/omap/omap-mcbsp.c | 43 |
1 files changed, 4 insertions, 39 deletions
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 9fd00b091814..86f213905e2c 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -202,31 +202,6 @@ static int omap_mcbsp_hwrule_min_buffersize(struct snd_pcm_hw_params *params, return snd_interval_refine(buffer_size, &frames); } -static int omap_mcbsp_hwrule_max_periodsize(struct snd_pcm_hw_params *params, - struct snd_pcm_hw_rule *rule) -{ - struct snd_interval *period_size = hw_param_interval(params, - SNDRV_PCM_HW_PARAM_PERIOD_SIZE); - struct snd_interval *channels = hw_param_interval(params, - SNDRV_PCM_HW_PARAM_CHANNELS); - struct snd_pcm_substream *substream = rule->private; - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; - struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data); - struct snd_interval frames; - int size; - - snd_interval_any(&frames); - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - size = omap_mcbsp_get_max_tx_threshold(mcbsp_data->bus_id); - else - size = omap_mcbsp_get_max_rx_threshold(mcbsp_data->bus_id); - - frames.max = size / channels->min; - frames.integer = 1; - return snd_interval_refine(period_size, &frames); -} - static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { @@ -255,10 +230,8 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, * 4 channels: size is 128 / 4 = 32 frames (4 * 32 words) */ if (cpu_is_omap343x()) { - int dma_op_mode = omap_mcbsp_get_dma_op_mode(bus_id); - /* - * The first rule is for the buffer size, we should not allow + * Rule for the buffer size. We should not allow * smaller buffer than the FIFO size to avoid underruns */ snd_pcm_hw_rule_add(substream->runtime, 0, @@ -267,17 +240,9 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, mcbsp_data, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); - /* - * In case of threshold mode, the rule will ensure, that the - * period size is not bigger than the maximum allowed threshold - * value. - */ - if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) - snd_pcm_hw_rule_add(substream->runtime, 0, - SNDRV_PCM_HW_PARAM_CHANNELS, - omap_mcbsp_hwrule_max_periodsize, - substream, - SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); + /* Make sure, that the period size is always even */ + snd_pcm_hw_constraint_step(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 2); } return err; |