Due to the DMIC that needs time to initial after the MCLK is provided, the field of delay time is implemented by the platform data.

Signed-off-by: Oder Chiou oder_chiou@realtek.com --- Documentation/devicetree/bindings/sound/rt5514.txt | 3 +++ include/sound/rt5514.h | 20 ++++++++++++++++++++ sound/soc/codecs/rt5514.c | 17 +++++++++++++++++ sound/soc/codecs/rt5514.h | 2 ++ 4 files changed, 42 insertions(+) create mode 100644 include/sound/rt5514.h

diff --git a/Documentation/devicetree/bindings/sound/rt5514.txt b/Documentation/devicetree/bindings/sound/rt5514.txt index 9cabfc1..a8074e7 100644 --- a/Documentation/devicetree/bindings/sound/rt5514.txt +++ b/Documentation/devicetree/bindings/sound/rt5514.txt @@ -13,6 +13,9 @@ Optional properties: - clocks: The phandle of the master clock to the CODEC - clock-names: Should be "mclk"

+- realtek,dmic-init-delay + Set the DMIC initial delay to wait it ready. + Pins on the device (for linking into audio routes) for RT5514:

* DMIC1L diff --git a/include/sound/rt5514.h b/include/sound/rt5514.h new file mode 100644 index 0000000..ef18494 --- /dev/null +++ b/include/sound/rt5514.h @@ -0,0 +1,20 @@ +/* + * linux/sound/rt5514.h -- Platform data for RT5514 + * + * Copyright 2016 Realtek Semiconductor Corp. + * Author: Oder Chiou oder_chiou@realtek.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_SND_RT5514_H +#define __LINUX_SND_RT5514_H + +struct rt5514_platform_data { + unsigned int dmic_init_delay; +}; + +#endif + diff --git a/sound/soc/codecs/rt5514.c b/sound/soc/codecs/rt5514.c index f24b7cf..0d7bbdf 100644 --- a/sound/soc/codecs/rt5514.c +++ b/sound/soc/codecs/rt5514.c @@ -452,6 +452,9 @@ static int rt5514_set_dmic_clk(struct snd_soc_dapm_widget *w, RT5514_CLK_DMIC_OUT_SEL_MASK, idx << RT5514_CLK_DMIC_OUT_SEL_SFT);

+ if (rt5514->pdata.dmic_init_delay) + msleep(rt5514->pdata.dmic_init_delay); + return idx; }

@@ -1073,9 +1076,18 @@ static const struct of_device_id rt5514_of_match[] = { MODULE_DEVICE_TABLE(of, rt5514_of_match); #endif

+static int rt5514_parse_dt(struct rt5514_priv *rt5514, struct device *dev) +{ + device_property_read_u32(dev, "realtek,dmic-init-delay", + &rt5514->pdata.dmic_init_delay); + + return 0; +} + static int rt5514_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { + struct rt5514_platform_data *pdata = dev_get_platdata(&i2c->dev); struct rt5514_priv *rt5514; int ret; unsigned int val; @@ -1087,6 +1099,11 @@ static int rt5514_i2c_probe(struct i2c_client *i2c,

i2c_set_clientdata(i2c, rt5514);

+ if (pdata) + rt5514->pdata = *pdata; + else if (i2c->dev.of_node) + rt5514_parse_dt(rt5514, &i2c->dev); + rt5514->i2c_regmap = devm_regmap_init_i2c(i2c, &rt5514_i2c_regmap); if (IS_ERR(rt5514->i2c_regmap)) { ret = PTR_ERR(rt5514->i2c_regmap); diff --git a/sound/soc/codecs/rt5514.h b/sound/soc/codecs/rt5514.h index 229de0e..5d343fb 100644 --- a/sound/soc/codecs/rt5514.h +++ b/sound/soc/codecs/rt5514.h @@ -13,6 +13,7 @@ #define __RT5514_H__

#include <linux/clk.h> +#include <sound/rt5514.h>

#define RT5514_DEVICE_ID 0x10ec5514

@@ -243,6 +244,7 @@ enum { };

struct rt5514_priv { + struct rt5514_platform_data pdata; struct snd_soc_codec *codec; struct regmap *i2c_regmap, *regmap; struct clk *mclk;