ALSA - au88x0 - Add buffer bytes constraints
This allow application such as gstreamer and wine which use snd_pcm_hw_params_set_buffer_time_near() won't fail any more since sound chips require special containt power 2 period bytes Signed-off-by: Raymond Yau <superquad.vortex2@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -44,10 +44,10 @@ static struct snd_pcm_hardware snd_vortex_playback_hw_adb = {
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.channels_min = 1,
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.channels_min = 1,
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.channels_max = 2,
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.channels_max = 2,
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.buffer_bytes_max = 0x10000,
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.buffer_bytes_max = 0x10000,
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.period_bytes_min = 0x1,
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.period_bytes_min = 0x20,
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.period_bytes_max = 0x1000,
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.period_bytes_max = 0x1000,
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.periods_min = 2,
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.periods_min = 2,
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.periods_max = 32,
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.periods_max = 1024,
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};
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};
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#ifndef CHIP_AU8820
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#ifndef CHIP_AU8820
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@ -140,6 +140,9 @@ static int snd_vortex_pcm_open(struct snd_pcm_substream *substream)
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SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0)
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SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0)
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return err;
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return err;
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snd_pcm_hw_constraint_step(runtime, 0,
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SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 64);
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if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
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if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
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#ifndef CHIP_AU8820
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#ifndef CHIP_AU8820
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if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) {
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if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) {
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