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authorMichael Walle <michael@walle.cc>2019-11-23 00:25:32 +0100
committerMark Brown <broonie@kernel.org>2019-11-27 12:51:16 +0000
commit2a0bda276c64212e517cc1d65cf65719a9ab1ef6 (patch)
tree12ad6b8cea6acf2ac22c2ddf2ac8974112ca8de4 /sound
parentfb3194413d1ef79732931a40f54da21a16505a76 (diff)
ASoC: wm8904: fix automatic sysclk configuration
The simple-card tries to signal the codec to disable rate constraints, see commit 2458adb8f92a ("SoC: simple-card-utils: set 0Hz to sysclk when shutdown"). This wasn't handled by the codec, instead it would set the FLL frequency to 0Hz which isn't working. Since we don't have any rate constraints just ignore this request. Fixes: 13409d27cb39 ("ASoC: wm8904: configure sysclk/FLL automatically") Signed-off-by: Michael Walle <michael@walle.cc> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20191122232532.22258-1-michael@walle.cc Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/wm8904.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
index 2a7d23a5daa8..d191d81850ee 100644
--- a/sound/soc/codecs/wm8904.c
+++ b/sound/soc/codecs/wm8904.c
@@ -1806,6 +1806,12 @@ static int wm8904_set_sysclk(struct snd_soc_dai *dai, int clk_id,
switch (clk_id) {
case WM8904_CLK_AUTO:
+ /* We don't have any rate constraints, so just ignore the
+ * request to disable constraining.
+ */
+ if (!freq)
+ return 0;
+
mclk_freq = clk_get_rate(priv->mclk);
/* enable FLL if a different sysclk is desired */
if (mclk_freq != freq) {