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Commit a91eb199 authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: Initial WM8904 CODEC driver 



The WM8904 is a high performance ultra-low power stereo CODEC
optimised for portable audio applications, with features including
a class W amplifier, FLL with free running mode, Mobile ReTune and
ground referenced headphone and line outputs.

Support for some features, most particularly the digital microphone
interface, is not yet present.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent d033c36a

include/sound/wm8904.h

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Original line number Diff line number Diff line 
/*

 * Platform data for WM8904

 *

 * Copyright 2009 Wolfson Microelectronics PLC.

 *

 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>

 *

 *  This program is free software; you can redistribute  it and/or modify it

 *  under  the terms of  the GNU General  Public License as published by the

 *  Free Software Foundation;  either version 2 of the  License, or (at your

 *  option) any later version.

 *

 */



#ifndef __MFD_WM8994_PDATA_H__

#define __MFD_WM8994_PDATA_H__



#define WM8904_DRC_REGS 4

#define WM8904_EQ_REGS  25



/**

 * DRC configurations are specified with a label and a set of register

 * values to write (the enable bits will be ignored).  At runtime an

 * enumerated control will be presented for each DRC block allowing

 * the user to choose the configration to use.

 *

 * Configurations may be generated by hand or by using the DRC control

 * panel provided by the WISCE - see  http://www.wolfsonmicro.com/wisce/

 * for details.

 */

struct wm8904_drc_cfg {

	const char *name;

	u16 regs[WM8904_DRC_REGS];

};



/**

 * ReTune Mobile configurations are specified with a label, sample

 * rate and set of values to write (the enable bits will be ignored).

 *

 * Configurations are expected to be generated using the ReTune Mobile

 * control panel in WISCE - see http://www.wolfsonmicro.com/wisce/

 */

struct wm8904_retune_mobile_cfg {

	const char *name;

	unsigned int rate;

	u16 regs[WM8904_EQ_REGS];

};



struct wm8904_pdata {

	int num_drc_cfgs;

	struct wm8904_drc_cfg *drc_cfgs;



	int num_retune_mobile_cfgs;

	struct wm8904_retune_mobile_cfg *retune_mobile_cfgs;

};



#endif

sound/soc/codecs/Kconfig

+4 −0
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@@ -49,6 +49,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_WM8776 if SND_SOC_I2C_AND_SPI

	select SND_SOC_WM8900 if I2C

	select SND_SOC_WM8903 if I2C

	select SND_SOC_WM8904 if I2C

	select SND_SOC_WM8940 if I2C

	select SND_SOC_WM8960 if I2C

	select SND_SOC_WM8961 if I2C
@@ -203,6 +204,9 @@ config SND_SOC_WM8900 
config SND_SOC_WM8903

	tristate



config SND_SOC_WM8904

	tristate



config SND_SOC_WM8940

        tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ snd-soc-wm8753-objs := wm8753.o 
snd-soc-wm8776-objs := wm8776.o

snd-soc-wm8900-objs := wm8900.o

snd-soc-wm8903-objs := wm8903.o

snd-soc-wm8904-objs := wm8904.o

snd-soc-wm8940-objs := wm8940.o

snd-soc-wm8960-objs := wm8960.o

snd-soc-wm8961-objs := wm8961.o
@@ -92,6 +93,7 @@ obj-$(CONFIG_SND_SOC_WM8753) += snd-soc-wm8753.o 
obj-$(CONFIG_SND_SOC_WM8776)	+= snd-soc-wm8776.o

obj-$(CONFIG_SND_SOC_WM8900)	+= snd-soc-wm8900.o

obj-$(CONFIG_SND_SOC_WM8903)	+= snd-soc-wm8903.o

obj-$(CONFIG_SND_SOC_WM8904)	+= snd-soc-wm8904.o

obj-$(CONFIG_SND_SOC_WM8971)	+= snd-soc-wm8971.o

obj-$(CONFIG_SND_SOC_WM8974)	+= snd-soc-wm8974.o

obj-$(CONFIG_SND_SOC_WM8940)	+= snd-soc-wm8940.o

sound/soc/codecs/wm8904.c

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sound/soc/codecs/wm8904.h

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