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authorStephen Warren <swarren@nvidia.com>2011-04-19 15:25:09 -0600
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-04-20 13:49:55 +0100
commit075413966a6ea389f78f4cc2e957708c1d6db8c5 (patch)
tree7f67ad032800ff3469d772c214885778bf9e41d5 /sound/soc/tegra
parentacb8303f15768c72796f3f95bb32a955333e0fbc (diff)
ASoC: Tegra: Don't return mclk_changed from utils_set_rate
Only the clock programming code needs to know whether the clocks changed, and that is encapsulated within tegra_asoc_utils_set_rate(). The machine driver's call to snd_soc_dai_set_sysclk(codec_dai, ...) is safe irrespective of whether the clocks changed. (Applying Mark's TrimSlice review comments to the existing driver) Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/tegra')
-rw-r--r--sound/soc/tegra/tegra_asoc_utils.c9
-rw-r--r--sound/soc/tegra/tegra_asoc_utils.h2
-rw-r--r--sound/soc/tegra/tegra_wm8903.c17
3 files changed, 13 insertions, 15 deletions
diff --git a/sound/soc/tegra/tegra_asoc_utils.c b/sound/soc/tegra/tegra_asoc_utils.c
index 52f0a3f9ce40..dfa85cbb05c8 100644
--- a/sound/soc/tegra/tegra_asoc_utils.c
+++ b/sound/soc/tegra/tegra_asoc_utils.c
@@ -28,9 +28,10 @@
#include "tegra_asoc_utils.h"
int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
- int mclk, int *mclk_change)
+ int mclk)
{
int new_baseclock;
+ bool clk_change;
int err;
switch (srate) {
@@ -52,10 +53,10 @@ int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
return -EINVAL;
}
- *mclk_change = ((new_baseclock != data->set_baseclock) ||
+ clk_change = ((new_baseclock != data->set_baseclock) ||
(mclk != data->set_mclk));
- if (!*mclk_change)
- return 0;
+ if (!clk_change)
+ return 0;
data->set_baseclock = 0;
data->set_mclk = 0;
diff --git a/sound/soc/tegra/tegra_asoc_utils.h b/sound/soc/tegra/tegra_asoc_utils.h
index bbba7afdfc2c..4818195da25c 100644
--- a/sound/soc/tegra/tegra_asoc_utils.h
+++ b/sound/soc/tegra/tegra_asoc_utils.h
@@ -36,7 +36,7 @@ struct tegra_asoc_utils_data {
};
int tegra_asoc_utils_set_rate(struct tegra_asoc_utils_data *data, int srate,
- int mclk, int *mclk_change);
+ int mclk);
int tegra_asoc_utils_init(struct tegra_asoc_utils_data *data,
struct device *dev);
void tegra_asoc_utils_fini(struct tegra_asoc_utils_data *data);
diff --git a/sound/soc/tegra/tegra_wm8903.c b/sound/soc/tegra/tegra_wm8903.c
index b12b1fd1cb6e..988ff504dd59 100644
--- a/sound/soc/tegra/tegra_wm8903.c
+++ b/sound/soc/tegra/tegra_wm8903.c
@@ -72,7 +72,7 @@ static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_card *card = codec->card;
struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
- int srate, mclk, mclk_change;
+ int srate, mclk;
int err;
srate = params_rate(params);
@@ -90,8 +90,7 @@ static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
while (mclk < 6000000)
mclk *= 2;
- err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk,
- &mclk_change);
+ err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
if (err < 0) {
dev_err(card->dev, "Can't configure clocks\n");
return err;
@@ -115,13 +114,11 @@ static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
return err;
}
- if (mclk_change) {
- err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
- SND_SOC_CLOCK_IN);
- if (err < 0) {
- dev_err(card->dev, "codec_dai clock not set\n");
- return err;
- }
+ err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+ SND_SOC_CLOCK_IN);
+ if (err < 0) {
+ dev_err(card->dev, "codec_dai clock not set\n");
+ return err;
}
return 0;