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ASoC: Allow source specification for CODEC level sysclk 

Similarly to PLLs/FLLs some modern CODECs provide selectable system clock
sources. When the clock is the clock for a DAI we do not usually need to
identify which clock is being configured so can use clk_id for the source
clock but with CODEC wide system clocks we will need to specify both the
clock being configured and the source.

Add a source argument to the CODEC driver set_sysclk() operation to
reflect this. As this operation is not as widely used as the DAI
set_sysclk() operation the change is not very invasive. We probably
ought to go and make the same alternation for DAIs at some point.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2011-08-24 20:09:01 +01:00
parent d2dd0540c1
commit da1c6ea6cf
5 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/sound/soc.h
View File

@ -276,7 +276,7 @@ enum snd_soc_pcm_subclass {
};
int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
unsigned int freq, int dir);
int source, unsigned int freq, int dir);
int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
unsigned int freq_in, unsigned int freq_out);
@ -610,7 +610,7 @@ struct snd_soc_codec_driver {
/* codec wide operations */
int (*set_sysclk)(struct snd_soc_codec *codec,
int clk_id, unsigned int freq, int dir);
int clk_id, int source, unsigned int freq, int dir);
int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
unsigned int freq_in, unsigned int freq_out);

3
sound/soc/codecs/adav80x.c
View File

@ -523,7 +523,8 @@ static int adav80x_hw_params(struct snd_pcm_substream *substream,
}
static int adav80x_set_sysclk(struct snd_soc_codec *codec,
int clk_id, unsigned int freq, int dir)
int clk_id, int source,
unsigned int freq, int dir)
{
struct adav80x *adav80x = snd_soc_codec_get_drvdata(codec);

4
sound/soc/codecs/wm9081.c
View File

@ -1120,8 +1120,8 @@ static int wm9081_digital_mute(struct snd_soc_dai *codec_dai, int mute)
return 0;
}
static int wm9081_set_sysclk(struct snd_soc_codec *codec,
int clk_id, unsigned int freq, int dir)
static int wm9081_set_sysclk(struct snd_soc_codec *codec, int clk_id,
int source, unsigned int freq, int dir)
{
struct wm9081_priv *wm9081 = snd_soc_codec_get_drvdata(codec);

2
sound/soc/samsung/speyside.c
View File

@ -223,7 +223,7 @@ static int speyside_wm9081_init(struct snd_soc_dapm_context *dapm)
snd_soc_dapm_nc_pin(dapm, "LINEOUT");
/* At any time the WM9081 is active it will have this clock */
return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK,
return snd_soc_codec_set_sysclk(dapm->codec, WM9081_SYSCLK_MCLK, 0,
48000 * 256, 0);
}

8
sound/soc/soc-core.c
View File

@ -2670,7 +2670,7 @@ int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
if (dai->driver && dai->driver->ops->set_sysclk)
return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
else if (dai->codec && dai->codec->driver->set_sysclk)
return dai->codec->driver->set_sysclk(dai->codec, clk_id,
return dai->codec->driver->set_sysclk(dai->codec, clk_id, 0,
freq, dir);
else
return -EINVAL;
@ -2681,16 +2681,18 @@ EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
* snd_soc_codec_set_sysclk - configure CODEC system or master clock.
* @codec: CODEC
* @clk_id: DAI specific clock ID
* @source: Source for the clock
* @freq: new clock frequency in Hz
* @dir: new clock direction - input/output.
*
* Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
*/
int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
unsigned int freq, int dir)
int source, unsigned int freq, int dir)
{
if (codec->driver->set_sysclk)
return codec->driver->set_sysclk(codec, clk_id, freq, dir);
return codec->driver->set_sysclk(codec, clk_id, source,
freq, dir);
else
return -EINVAL;
}