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Commit 49ef7925 authored by Oder Chiou's avatar Oder Chiou Committed by Mark Brown
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ASoC: rt5640: Add RL6231 class device shared support for RT5640, RT5645 and RT5651 



The patch adds the RL6231 class device shared support for RT5640, RT5645 and
RT5651. The function of the DMIC clock calculation can be shared by RL6231
shared support.

Signed-off-by: default avatarOder Chiou <oder_chiou@realtek.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 15f78ea6

sound/soc/codecs/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -392,6 +392,15 @@ config SND_SOC_PCM512x_SPI 
	select SND_SOC_PCM512x

	select REGMAP_SPI



config SND_SOC_RL6231

	tristate

	default y if SND_SOC_RT5640=y

	default y if SND_SOC_RT5645=y

	default y if SND_SOC_RT5651=y

	default m if SND_SOC_RT5640=m

	default m if SND_SOC_RT5645=m

	default m if SND_SOC_RT5651=m



config SND_SOC_RT5631

	tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ snd-soc-pcm3008-objs := pcm3008.o 
snd-soc-pcm512x-objs := pcm512x.o

snd-soc-pcm512x-i2c-objs := pcm512x-i2c.o

snd-soc-pcm512x-spi-objs := pcm512x-spi.o

snd-soc-rl6231-objs := rl6231.o

snd-soc-rt5631-objs := rt5631.o

snd-soc-rt5640-objs := rt5640.o

snd-soc-rt5645-objs := rt5645.o
@@ -211,6 +212,7 @@ obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o 
obj-$(CONFIG_SND_SOC_PCM512x)	+= snd-soc-pcm512x.o

obj-$(CONFIG_SND_SOC_PCM512x_I2C)	+= snd-soc-pcm512x-i2c.o

obj-$(CONFIG_SND_SOC_PCM512x_SPI)	+= snd-soc-pcm512x-spi.o

obj-$(CONFIG_SND_SOC_RL6231)	+= snd-soc-rl6231.o

obj-$(CONFIG_SND_SOC_RT5631)	+= snd-soc-rt5631.o

obj-$(CONFIG_SND_SOC_RT5640)	+= snd-soc-rt5640.o

obj-$(CONFIG_SND_SOC_RT5645)	+= snd-soc-rt5645.o

sound/soc/codecs/rl6231.c

0 → 100644
+67 −0
Original line number Diff line number Diff line 
/*

 * rl6231.c - RL6231 class device shared support

 *

 * Copyright 2014 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.

 */



#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/pm.h>

#include <linux/gpio.h>

#include <linux/i2c.h>

#include <linux/regmap.h>

#include <linux/of.h>

#include <linux/of_gpio.h>

#include <linux/platform_device.h>

#include <linux/spi/spi.h>

#include <linux/acpi.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <sound/initval.h>

#include <sound/tlv.h>



#include "rl6231.h"



/**

 * rl6231_calc_dmic_clk - Calculate the parameter of dmic.

 *

 * @rate: base clock rate.

 *

 * Choose dmic clock between 1MHz and 3MHz.

 * It is better for clock to approximate 3MHz.

 */

int rl6231_calc_dmic_clk(int rate)

{

	int div[] = {2, 3, 4, 6, 8, 12}, idx = -EINVAL;

	int i, red, bound, temp;



	red = 3000000 * 12;

	for (i = 0; i < ARRAY_SIZE(div); i++) {

		bound = div[i] * 3000000;

		if (rate > bound)

			continue;

		temp = bound - rate;

		if (temp < red) {

			red = temp;

			idx = i;

		}

	}



	return idx;

}

EXPORT_SYMBOL_GPL(rl6231_calc_dmic_clk);



MODULE_DESCRIPTION("RL6231 class device shared support");

MODULE_AUTHOR("Oder Chiou <oder_chiou@realtek.com>");

MODULE_LICENSE("GPL v2");

sound/soc/codecs/rl6231.h

0 → 100644
+18 −0
Original line number Diff line number Diff line 
/*

 * rl6231.h - RL6231 class device shared support

 *

 * Copyright 2014 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 __RL6231_H__

#define __RL6231_H__



int rl6231_calc_dmic_clk(int rate);



#endif /* __RL6231_H__ */

sound/soc/codecs/rt5640.c

+5 −18
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <sound/initval.h>

#include <sound/tlv.h>



#include "rl6231.h"

#include "rt5640.h"



#define RT5640_DEVICE_ID 0x6231
@@ -452,30 +453,16 @@ static const struct snd_kcontrol_new rt5640_specific_snd_controls[] = { 
 * @kcontrol: The kcontrol of this widget.

 * @event: Event id.

 *

 * Choose dmic clock between 1MHz and 3MHz.

 * It is better for clock to approximate 3MHz.

 */

static int set_dmic_clk(struct snd_soc_dapm_widget *w,

	struct snd_kcontrol *kcontrol, int event)

{

	struct snd_soc_codec *codec = w->codec;

	struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec);

	int div[] = {2, 3, 4, 6, 8, 12};

	int idx = -EINVAL, i;

	int rate, red, bound, temp;



	rate = rt5640->sysclk;

	red = 3000000 * 12;

	for (i = 0; i < ARRAY_SIZE(div); i++) {

		bound = div[i] * 3000000;

		if (rate > bound)

			continue;

		temp = bound - rate;

		if (temp < red) {

			red = temp;

			idx = i;

		}

	}

	int idx = -EINVAL;



	idx = rl6231_calc_dmic_clk(rt5640->sysclk);



	if (idx < 0)

		dev_err(codec->dev, "Failed to set DMIC clock\n");

	else