ASoC: wm8960: Read initial MCLK rate from clock API

When we have a MCLK provided by the clock API read the rate at startup
and store it so that there's something set before the machine driver has
done clocking configuration (eg, if it only configures clocking based on
sample rate).

Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230731-asoc-wm8960-clk-v1-1-69f9ffa2b10a@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index c2bd9ef41ebb2d9da8c3cb8926c5087bed0724a2..d4bc97088354542bf589603d4ef2a8b96cc27be0 100644 (file)
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -1429,6 +1429,14 @@ static int wm8960_i2c_probe(struct i2c_client *i2c)
        if (IS_ERR(wm8960->mclk)) {
                if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER)
                        return -EPROBE_DEFER;
+       } else {
+               ret = clk_get_rate(wm8960->mclk);
+               if (ret >= 0) {
+                       wm8960->freq_in = ret;
+               } else {
+                       dev_err(&i2c->dev, "Failed to read MCLK rate: %d\n",
+                               ret);
+               }
        }
 
        wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);