From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: Mark Brown <broonie@kernel.org>, Liam Girdwood <lgirdwood@gmail.com>
Cc: <alsa-devel@alsa-project.org>, <t-kristo@ti.com>,
<stable@vger.kernel.org>
Subject: [PATCH] ASoC: dmic: Fix clock parenting
Date: Thu, 12 Apr 2018 11:23:15 +0300 [thread overview]
Message-ID: <20180412082315.17302-1-peter.ujfalusi@ti.com> (raw)
From: Tero Kristo <t-kristo@ti.com>
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>
Cc: stable@vger.kernel.org # 4.16+
---
Mark,
can you apply this for 4.17 as DMIC got broken already in 4.16.
Regards,
Peter
sound/soc/omap/omap-dmic.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index c7101d851213..51dd7c65096b 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;
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
WARNING: multiple messages have this Message-ID (diff)
From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: Mark Brown <broonie@kernel.org>, Liam Girdwood <lgirdwood@gmail.com>
Cc: t-kristo@ti.com, alsa-devel@alsa-project.org, stable@vger.kernel.org
Subject: [PATCH] ASoC: dmic: Fix clock parenting
Date: Thu, 12 Apr 2018 11:23:15 +0300 [thread overview]
Message-ID: <20180412082315.17302-1-peter.ujfalusi@ti.com> (raw)
From: Tero Kristo <t-kristo@ti.com>
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>
Cc: stable@vger.kernel.org # 4.16+
---
Mark,
can you apply this for 4.17 as DMIC got broken already in 4.16.
Regards,
Peter
sound/soc/omap/omap-dmic.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index c7101d851213..51dd7c65096b 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;
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next reply other threads:[~2018-04-12 8:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-12 8:23 Peter Ujfalusi [this message]
2018-04-12 8:23 ` [PATCH] ASoC: dmic: Fix clock parenting Peter Ujfalusi
2018-04-12 12:24 ` Applied "ASoC: dmic: Fix clock parenting" to the asoc tree Mark Brown
2018-04-12 12:24 ` Mark Brown
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