ASoC: samsung: i2s: Fix rclk_srcrate handling

As the RCLK clock may be updated through the common clk API before each
snd_soc_dai_ops::trigger call, it is not enough to update i2s->rclk_srcrate
only once after it has been initially set to 0. To avoid wrong PSR values
we always get RCLK frequency from the CLK_I2S_RCLK_SRC clock, when that
clock is available.

Fixes: e1417fdf3011 "ASoC: samsung: i2s: Ensure the RCLK rate is properly determined"
Change-Id: I81065cf4e7da3c159a1f91bb0df626cdc0356c23
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 340864d..cbfb9b7 100644 (file)
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -887,7 +887,7 @@ static int config_setup(struct i2s_dai *i2s)
        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))
+               if (rclksrc && !IS_ERR(rclksrc))
                        i2s->rclk_srcrate = clk_get_rate(rclksrc);
 
                psr = i2s->rclk_srcrate / i2s->frmclk / rfs;