redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

ASoC: rt5514: Add the MCLK handling

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

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Oder Chiou 2016-06-17 11:02:24 +08:00 committed by Mark Brown
parent 1a695a905c
commit c9506bb84b
3 changed files with 40 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
Documentation/devicetree/bindings/sound/rt5514.txt
View file

@ -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

32
sound/soc/codecs/rt5514.c
View file

@ -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,

3
sound/soc/codecs/rt5514.h
View file

@ -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;