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ASoC: Add ADAU1977 CODEC driver

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This patch adds support for the ADAU1977, ADAU1978 and ADAU1979 audio CODEC
devices. They are a family of 4-channel differential input audio ADC devices.
They can be connected to either a SPI or I2C bus. The driver is implemented in
three modules, one main module (adau1977.ko) which implements the device logic
and one module each for SPI (adau1977-spi.ko) and I2C (adau1977-i2c.ko) bus
access.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Lars-Peter Clausen
2014-02-18 15:57:35 +01:00
committed by Mark Brown
parent a32eb702f8
commit 603597c937
7 changed files with 1256 additions and 0 deletions
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45
include/linux/platform_data/adau1977.h Normal file
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/*
* ADAU1977/ADAU1978/ADAU1979 driver
*
* Copyright 2014 Analog Devices Inc.
* Author: Lars-Peter Clausen <lars@metafoo.de>
*
* Licensed under the GPL-2.
*/
#ifndef __LINUX_PLATFORM_DATA_ADAU1977_H__
#define __LINUX_PLATFORM_DATA_ADAU1977_H__
/**
* enum adau1977_micbias - ADAU1977 MICBIAS pin voltage setting
* @ADAU1977_MICBIAS_5V0: MICBIAS is set to 5.0 V
* @ADAU1977_MICBIAS_5V5: MICBIAS is set to 5.5 V
* @ADAU1977_MICBIAS_6V0: MICBIAS is set to 6.0 V
* @ADAU1977_MICBIAS_6V5: MICBIAS is set to 6.5 V
* @ADAU1977_MICBIAS_7V0: MICBIAS is set to 7.0 V
* @ADAU1977_MICBIAS_7V5: MICBIAS is set to 7.5 V
* @ADAU1977_MICBIAS_8V0: MICBIAS is set to 8.0 V
* @ADAU1977_MICBIAS_8V5: MICBIAS is set to 8.5 V
* @ADAU1977_MICBIAS_9V0: MICBIAS is set to 9.0 V
*/
enum adau1977_micbias {
ADAU1977_MICBIAS_5V0 = 0x0,
ADAU1977_MICBIAS_5V5 = 0x1,
ADAU1977_MICBIAS_6V0 = 0x2,
ADAU1977_MICBIAS_6V5 = 0x3,
ADAU1977_MICBIAS_7V0 = 0x4,
ADAU1977_MICBIAS_7V5 = 0x5,
ADAU1977_MICBIAS_8V0 = 0x6,
ADAU1977_MICBIAS_8V5 = 0x7,
ADAU1977_MICBIAS_9V0 = 0x8,
};
/**
* struct adau1977_platform_data - Platform configuration data for the ADAU1977
* @micbias: Specifies the voltage for the MICBIAS pin
*/
struct adau1977_platform_data {
enum adau1977_micbias micbias;
};
#endif