[alsa-devel] [PATCH V3 10/15] ASoC: samsung: odroidx2: Handle I2S CDCLK clock conditionally

[Sylwester Nawrocki]

In order to support old DTs we check the codec device node if it
contains "clocks" property and only if it doesn't (which indicates
an old DT) we proceed with enabling the CDCLK clock by means of
the set_sysclk() callback.  For new DTs which use the common clock
bindings for CDCLK that clock is supposed to be handled outside
the sound machine driver.

Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>
---
 sound/soc/samsung/odroidx2_max98090.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sound/soc/samsung/odroidx2_max98090.c b/sound/soc/samsung/odroidx2_max98090.c
index fa4f1d2..596f118 100644
--- a/sound/soc/samsung/odroidx2_max98090.c
+++ b/sound/soc/samsung/odroidx2_max98090.c
@@ -21,6 +21,8 @@ struct odroidx2_drv_data {
 /* The I2S CDCLK output clock frequency for the MAX98090 codec */
 #define MAX98090_MCLK 19200000
 
+static struct snd_soc_dai_link odroidx2_dai[];
+
 static int odroidx2_late_probe(struct snd_soc_card *card)
 {
 	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
@@ -29,7 +31,9 @@ static int odroidx2_late_probe(struct snd_soc_card *card)
 
 	ret = snd_soc_dai_set_sysclk(codec_dai, 0, MAX98090_MCLK,
 						SND_SOC_CLOCK_IN);
-	if (ret < 0)
+
+	if (ret < 0 || of_find_property(odroidx2_dai[0].codec_of_node,
+					"clocks", NULL))
 		return ret;
 
 	/* Set the cpu DAI configuration in order to use CDCLK */
-- 
1.7.9.5