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authorTero Kristo <t-kristo@ti.com>2018-04-12 11:23:15 +0300
committerMark Brown <broonie@kernel.org>2018-04-12 15:00:54 +0300
commit573eda59c772d11fc2b56d525dfb698b0f87ddb3 (patch)
tree432e125ae670884b2482c966494841b07b4ccdd4 /sound
parent445bb423f6a3c50788529a33b82e45148001e855 (diff)
downloadlinux-573eda59c772d11fc2b56d525dfb698b0f87ddb3.tar.xz
ASoC: dmic: Fix clock parenting
In 4.16 the clock hierarchy got changed by a5c82a09d876 ARM: dts: omap4: add clkctrl nodes The fck of dmic is no longer a mux clock, it's parent is. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org # 4.16+
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/omap/omap-dmic.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index 09db2aec12a3..b2f5d2fa354d 100644
--- a/sound/soc/omap/omap-dmic.c
+++ b/sound/soc/omap/omap-dmic.c
@@ -281,7 +281,7 @@ static int omap_dmic_dai_trigger(struct snd_pcm_substream *substream,
static int omap_dmic_select_fclk(struct omap_dmic *dmic, int clk_id,
unsigned int freq)
{
- struct clk *parent_clk;
+ struct clk *parent_clk, *mux;
char *parent_clk_name;
int ret = 0;
@@ -329,14 +329,21 @@ static int omap_dmic_select_fclk(struct omap_dmic *dmic, int clk_id,
return -ENODEV;
}
+ mux = clk_get_parent(dmic->fclk);
+ if (IS_ERR(mux)) {
+ dev_err(dmic->dev, "can't get fck mux parent\n");
+ clk_put(parent_clk);
+ return -ENODEV;
+ }
+
mutex_lock(&dmic->mutex);
if (dmic->active) {
/* disable clock while reparenting */
pm_runtime_put_sync(dmic->dev);
- ret = clk_set_parent(dmic->fclk, parent_clk);
+ ret = clk_set_parent(mux, parent_clk);
pm_runtime_get_sync(dmic->dev);
} else {
- ret = clk_set_parent(dmic->fclk, parent_clk);
+ ret = clk_set_parent(mux, parent_clk);
}
mutex_unlock(&dmic->mutex);
@@ -349,6 +356,7 @@ static int omap_dmic_select_fclk(struct omap_dmic *dmic, int clk_id,
dmic->fclk_freq = freq;
err_busy:
+ clk_put(mux);
clk_put(parent_clk);
return ret;