openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ASoC: wm8978: pll incorrectly configured when codec is master 

When MCLK is supplied externally and BCLK and LRC are configured as outputs
(codec is master), the PLL values are only calculated correctly on the first
transmission.  On subsequent transmissions, at differenct sample rates, the
wrong PLL values are used.  Test for f_opclk instead of f_pllout to determine
if the PLL values are needed.

Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Eric Millbrandt 2012-11-02 17:05:44 -04:00 committed by Mark Brown
parent 8f0d8163b5
commit 55c6f4cb6e
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/soc/codecs/wm8978.c
View File

@ -782,7 +782,7 @@ static int wm8978_hw_params(struct snd_pcm_substream *substream,
wm8978->mclk_idx = -1; wm8978->mclk_idx = -1;
f_sel = wm8978->f_mclk; f_sel = wm8978->f_mclk;
} else { } else {
if (!wm8978->f_pllout) { if (!wm8978->f_opclk) {
/* We only enter here, if OPCLK is not used */ /* We only enter here, if OPCLK is not used */
int ret = wm8978_configure_pll(codec); int ret = wm8978_configure_pll(codec);
if (ret < 0) if (ret < 0)