[PATCH 4.14 17/52] ASoC: rt5659: Update MCLK rate in set_sysclk()

Greg Kroah-Hartman
2021-04-05T08:58:54Z

From: Sameer Pujar <spujar@nvidia.com>

[ Upstream commit dbf54a9534350d6aebbb34f5c1c606b81a4f35dd ]

Simple-card/audio-graph-card drivers do not handle MCLK clock when it
is specified in the codec device node. The expectation here is that,
the codec should actually own up the MCLK clock and do necessary setup
in the driver.

Suggested-by: Mark Brown <broonie@kernel.org>
Suggested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://lore.kernel.org/r/1615829492-8972-3-git-send-email-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/rt5659.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/sound/soc/codecs/rt5659.c b/sound/soc/codecs/rt5659.c
index fa66b11df8d4..ae626d57c1ad 100644
--- a/sound/soc/codecs/rt5659.c
+++ b/sound/soc/codecs/rt5659.c
@@ -3391,12 +3391,17 @@ static int rt5659_set_dai_sysclk(struct snd_soc_dai *dai,
struct snd_soc_codec *codec = dai->codec;
struct rt5659_priv *rt5659 = snd_soc_codec_get_drvdata(codec);
unsigned int reg_val = 0;
+ int ret;

if (freq == rt5659->sysclk && clk_id == rt5659->sysclk_src)
return 0;

switch (clk_id) {
case RT5659_SCLK_S_MCLK:
+ ret = clk_set_rate(rt5659->mclk, freq);
+ if (ret)
+ return ret;
+
reg_val |= RT5659_SCLK_SRC_MCLK;
break;
case RT5659_SCLK_S_PLL1:
--
2.30.1