From c42eec0f193ed408118e20d85ea8c2e69c529993 Mon Sep 17 00:00:00 2001
From: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Date: Thu, 2 Apr 2009 08:21:13 +0200
Subject: [PATCH] ALSA: snd-atmel-ac97c: set correct size for buffer hardware
parameter
This patch will set a proper maximum bytes for the buffer, which is:
channels * bytes per sample * maximum periods * maximum bytes per period.
It also sets the minimum periods to 6, a value chosen from testing, with
a minimum of 6 periods the system has good time to fill in new audio
data without skipping.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/atmel/ac97c.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index 4e8f66d40812..c9bc3458fa2d 100644
--- a/sound/atmel/ac97c.c
+++ b/sound/atmel/ac97c.c
@@ -151,10 +151,10 @@ static struct snd_pcm_hardware atmel_ac97c_hw = {
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
- .buffer_bytes_max = 64 * 4096,
+ .buffer_bytes_max = 2 * 2 * 64 * 2048,
.period_bytes_min = 4096,
.period_bytes_max = 4096,
- .periods_min = 4,
+ .periods_min = 6,
.periods_max = 64,
};