Commit da1c6ea6 authored by Mark Brown's avatar Mark Brown
Browse files

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: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent d2dd0540

include/sound/soc.h

+2 −2
Original line number Diff line number Diff line
@@ -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);

sound/soc/codecs/adav80x.c

+2 −1
Original line number Diff line number Diff line
@@ -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);

sound/soc/codecs/wm9081.c

+2 −2
Original line number Diff line number Diff line
@@ -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);

sound/soc/samsung/speyside.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

}

sound/soc/soc-core.c

+5 −3
Original line number Diff line number Diff line
@@ -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;

}

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