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Commit 1cad1de1 authored by Christian Pellegrin's avatar Christian Pellegrin Committed by Mark Brown
Browse files

ASoC: UDA134x codec driver 



Signed-off-by: default avatarChristian Pellegrin <chripell@fsfe.org>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 6e5d9db2

include/sound/l3.h

0 → 100644
+18 −0
Original line number Diff line number Diff line 
#ifndef _L3_H_

#define _L3_H_ 1



struct l3_pins {

	void (*setdat)(int);

	void (*setclk)(int);

	void (*setmode)(int);

	int data_hold;

	int data_setup;

	int clock_high;

	int mode_hold;

	int mode;

	int mode_setup;

};



int l3_write(struct l3_pins *adap, u8 addr, u8 *data, int len);



#endif

include/sound/uda134x.h

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+26 −0
Original line number Diff line number Diff line 
/*

 * uda134x.h  --  UDA134x ALSA SoC Codec driver

 *

 * Copyright 2007 Dension Audio Systems Ltd.

 * Author: Zoltan Devai

 *

 * 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 _UDA134X_H

#define _UDA134X_H



#include <sound/l3.h>



struct uda134x_platform_data {

	struct l3_pins l3;

	void (*power) (int);

	int model;

#define UDA134X_UDA1340 1

#define UDA134X_UDA1341 2

#define UDA134X_UDA1344 3

};



#endif /* _UDA134X_H */

sound/soc/codecs/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_TLV320AIC26 if SPI_MASTER

	select SND_SOC_TLV320AIC3X if I2C

	select SND_SOC_TWL4030 if TWL4030_CORE

	select SND_SOC_UDA134X

	select SND_SOC_UDA1380 if I2C

	select SND_SOC_WM8510 if (I2C || SPI_MASTER)

	select SND_SOC_WM8580 if I2C
@@ -66,6 +67,9 @@ config SND_SOC_CS4270_VD33_ERRATA 
	bool

	depends on SND_SOC_CS4270



config SND_SOC_L3

       tristate



config SND_SOC_SSM2602

	tristate
@@ -85,6 +89,10 @@ config SND_SOC_TWL4030 
	tristate

	depends on TWL4030_CORE



config SND_SOC_UDA134X

       tristate

       select SND_SOC_L3



config SND_SOC_UDA1380

        tristate

sound/soc/codecs/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -3,11 +3,13 @@ snd-soc-ad1980-objs := ad1980.o 
snd-soc-ad73311-objs := ad73311.o

snd-soc-ak4535-objs := ak4535.o

snd-soc-cs4270-objs := cs4270.o

snd-soc-l3-objs := l3.o

snd-soc-ssm2602-objs := ssm2602.o

snd-soc-tlv320aic23-objs := tlv320aic23.o

snd-soc-tlv320aic26-objs := tlv320aic26.o

snd-soc-tlv320aic3x-objs := tlv320aic3x.o

snd-soc-twl4030-objs := twl4030.o

snd-soc-uda134x-objs := uda134x.o

snd-soc-uda1380-objs := uda1380.o

snd-soc-wm8510-objs := wm8510.o

snd-soc-wm8580-objs := wm8580.o
@@ -27,11 +29,13 @@ obj-$(CONFIG_SND_SOC_AD1980) += snd-soc-ad1980.o 
obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o

obj-$(CONFIG_SND_SOC_AK4535)	+= snd-soc-ak4535.o

obj-$(CONFIG_SND_SOC_CS4270)	+= snd-soc-cs4270.o

obj-$(CONFIG_SND_SOC_L3)	+= snd-soc-l3.o

obj-$(CONFIG_SND_SOC_SSM2602)	+= snd-soc-ssm2602.o

obj-$(CONFIG_SND_SOC_TLV320AIC23)	+= snd-soc-tlv320aic23.o

obj-$(CONFIG_SND_SOC_TLV320AIC26)	+= snd-soc-tlv320aic26.o

obj-$(CONFIG_SND_SOC_TLV320AIC3X)	+= snd-soc-tlv320aic3x.o

obj-$(CONFIG_SND_SOC_TWL4030)	+= snd-soc-twl4030.o

obj-$(CONFIG_SND_SOC_UDA134X)	+= snd-soc-uda134x.o

obj-$(CONFIG_SND_SOC_UDA1380)	+= snd-soc-uda1380.o

obj-$(CONFIG_SND_SOC_WM8510)	+= snd-soc-wm8510.o

obj-$(CONFIG_SND_SOC_WM8580)	+= snd-soc-wm8580.o

sound/soc/codecs/l3.c

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/*

 * L3 code

 *

 *  Copyright (C) 2008, Christian Pellegrin <chripell@evolware.org>

 *

 * 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.

 *

 *

 * based on:

 *

 * L3 bus algorithm module.

 *

 *  Copyright (C) 2001 Russell King, All Rights Reserved.

 *

 *

 */



#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/delay.h>



#include <sound/l3.h>



/*

 * Send one byte of data to the chip.  Data is latched into the chip on

 * the rising edge of the clock.

 */

static void sendbyte(struct l3_pins *adap, unsigned int byte)

{

	int i;



	for (i = 0; i < 8; i++) {

		adap->setclk(0);

		udelay(adap->data_hold);

		adap->setdat(byte & 1);

		udelay(adap->data_setup);

		adap->setclk(1);

		udelay(adap->clock_high);

		byte >>= 1;

	}

}



/*

 * Send a set of bytes to the chip.  We need to pulse the MODE line

 * between each byte, but never at the start nor at the end of the

 * transfer.

 */

static void sendbytes(struct l3_pins *adap, const u8 *buf,

		      int len)

{

	int i;



	for (i = 0; i < len; i++) {

		if (i) {

			udelay(adap->mode_hold);

			adap->setmode(0);

			udelay(adap->mode);

		}

		adap->setmode(1);

		udelay(adap->mode_setup);

		sendbyte(adap, buf[i]);

	}

}



int l3_write(struct l3_pins *adap, u8 addr, u8 *data, int len)

{

	adap->setclk(1);

	adap->setdat(1);

	adap->setmode(1);

	udelay(adap->mode);



	adap->setmode(0);

	udelay(adap->mode_setup);

	sendbyte(adap, addr);

	udelay(adap->mode_hold);



	sendbytes(adap, data, len);



	adap->setclk(1);

	adap->setdat(1);

	adap->setmode(0);



	return len;

}

EXPORT_SYMBOL_GPL(l3_write);



MODULE_DESCRIPTION("L3 bit-banging driver");

MODULE_AUTHOR("Christian Pellegrin <chripell@evolware.org>");

MODULE_LICENSE("GPL");