From 54a96dadaa2bbe81006c66447517b57534d80e7f Mon Sep 17 00:00:00 2001 From: Raymond Yau Date: Mon, 25 Apr 2011 12:05:45 +0800 Subject: [PATCH] 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 Signed-off-by: Takashi Iwai --- sound/pci/au88x0/au88x0_pcm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/sound/pci/au88x0/au88x0_pcm.c b/sound/pci/au88x0/au88x0_pcm.c index 33f0ba5..62e9591 100644 --- a/sound/pci/au88x0/au88x0_pcm.c +++ b/sound/pci/au88x0/au88x0_pcm.c @@ -44,10 +44,10 @@ static struct snd_pcm_hardware snd_vortex_playback_hw_adb = { .channels_min = 1, .channels_max = 2, .buffer_bytes_max = 0x10000, - .period_bytes_min = 0x1, + .period_bytes_min = 0x20, .period_bytes_max = 0x1000, .periods_min = 2, - .periods_max = 32, + .periods_max = 1024, }; #ifndef CHIP_AU8820 @@ -140,6 +140,9 @@ static int snd_vortex_pcm_open(struct snd_pcm_substream *substream) SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0) return err; + snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 64); + if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) { #ifndef CHIP_AU8820 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) { -- 2.7.4