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Commit c9506bb8 authored by Oder Chiou's avatar Oder Chiou Committed by Mark Brown
Browse files

ASoC: rt5514: Add the MCLK handling 



The patch adds the control of MCLK that depends on the status of DAPM.

Signed-off-by: default avatarOder Chiou <oder_chiou@realtek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1a695a90

Documentation/devicetree/bindings/sound/rt5514.txt

+5 −0
Original line number Diff line number Diff line
@@ -8,6 +8,11 @@ Required properties: 


- reg : The I2C address of the device.



Optional properties:



- clocks: The phandle of the master clock to the CODEC

- clock-names: Should be "mclk"



Pins on the device (for linking into audio routes) for RT5514:



  * DMIC1L

sound/soc/codecs/rt5514.c

+32 −0
Original line number Diff line number Diff line
@@ -799,10 +799,41 @@ static int rt5514_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 
	return 0;

}



static int rt5514_set_bias_level(struct snd_soc_codec *codec,

			enum snd_soc_bias_level level)

{

	struct rt5514_priv *rt5514 = snd_soc_codec_get_drvdata(codec);

	int ret;



	switch (level) {

	case SND_SOC_BIAS_PREPARE:

		if (IS_ERR(rt5514->mclk))

			break;



		if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_ON) {

			clk_disable_unprepare(rt5514->mclk);

		} else {

			ret = clk_prepare_enable(rt5514->mclk);

			if (ret)

				return ret;

		}

		break;



	default:

		break;

	}



	return 0;

}



static int rt5514_probe(struct snd_soc_codec *codec)

{

	struct rt5514_priv *rt5514 = snd_soc_codec_get_drvdata(codec);



	rt5514->mclk = devm_clk_get(codec->dev, "mclk");

	if (PTR_ERR(rt5514->mclk) == -EPROBE_DEFER)

		return -EPROBE_DEFER;



	rt5514->codec = codec;



	return 0;
@@ -858,6 +889,7 @@ struct snd_soc_dai_driver rt5514_dai[] = { 
static struct snd_soc_codec_driver soc_codec_dev_rt5514 = {

	.probe = rt5514_probe,

	.idle_bias_off = true,

	.set_bias_level = rt5514_set_bias_level,

	.controls = rt5514_snd_controls,

	.num_controls = ARRAY_SIZE(rt5514_snd_controls),

	.dapm_widgets = rt5514_dapm_widgets,

sound/soc/codecs/rt5514.h

+3 −0
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ 
#ifndef __RT5514_H__

#define __RT5514_H__



#include <linux/clk.h>



#define RT5514_DEVICE_ID			0x10ec5514



#define RT5514_RESET				0x2000
@@ -240,6 +242,7 @@ enum { 
struct rt5514_priv {

	struct snd_soc_codec *codec;

	struct regmap *i2c_regmap, *regmap;

	struct clk *mclk;

	int sysclk;

	int sysclk_src;

	int lrck;