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| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2018-02-05 16:43:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-25 16:13:10 +0200 |
| commit | 608ae38610e62c719ad5fff57b7d47c82f68cd84 (patch) | |
| tree | e4783e37ed21b691437c2b1225494f58d210a2a0 /sound | |
| parent | a74ae617a73b520f0ed719388d3c502d54b164da (diff) | |
| download | linux-stable-608ae38610e62c719ad5fff57b7d47c82f68cd84.tar.gz linux-stable-608ae38610e62c719ad5fff57b7d47c82f68cd84.tar.bz2 linux-stable-608ae38610e62c719ad5fff57b7d47c82f68cd84.zip | |
ASoC: samsung: i2s: Ensure the RCLK rate is properly determined
[ Upstream commit 647d04f8e07afc7c3b7a42b3ee01a8b28db29631 ]
If the RCLK mux clock configuration is specified in DT and no set_sysclk()
callback is used in the sound card driver the sclk_srcrate field will remain
set to 0, leading to an incorrect PSR divider setting.
To fix this the frequency value is retrieved from the CLK_I2S_RCLK_SRC clock,
so the actual RCLK mux selection is taken into account.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/samsung/i2s.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index 85324e61cbd5..2d14e37ddc3f 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -642,8 +642,12 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, tmp |= mod_slave; break; case SND_SOC_DAIFMT_CBS_CFS: - /* Set default source clock in Master mode */ - if (i2s->rclk_srcrate == 0) + /* + * Set default source clock in Master mode, only when the + * CLK_I2S_RCLK_SRC clock is not exposed so we ensure any + * clock configuration assigned in DT is not overwritten. + */ + if (i2s->rclk_srcrate == 0 && i2s->clk_data.clks == NULL) i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0, 0, SND_SOC_CLOCK_IN); break; @@ -858,6 +862,11 @@ static int config_setup(struct i2s_dai *i2s) return 0; if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { + struct clk *rclksrc = i2s->clk_table[CLK_I2S_RCLK_SRC]; + + if (i2s->rclk_srcrate == 0 && rclksrc && !IS_ERR(rclksrc)) + i2s->rclk_srcrate = clk_get_rate(rclksrc); + psr = i2s->rclk_srcrate / i2s->frmclk / rfs; writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR); dev_dbg(&i2s->pdev->dev, |