Commit 8c29ecd3 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio:ad7793: Add ad7785 support 



The ad7785 is similar to the ad7792/ad7793, but has 20 bit wide data samples.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 525e643e

drivers/staging/iio/adc/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -113,8 +113,8 @@ config AD7793 
	depends on SPI

	select AD_SIGMA_DELTA

	help

	  Say yes here to build support for Analog Devices AD7792, AD7793, AD7794

	  and AD7795 SPI analog to digital converters (ADC).

	  Say yes here to build support for Analog Devices AD7785, AD7792, AD7793,

	  AD7794 and AD7795 SPI analog to digital converters (ADC).

	  If unsure, say N (but it's safe to say "Y").



	  To compile this driver as a module, choose M here: the

drivers/staging/iio/adc/ad7793.c

+17 −10
Original line number Diff line number Diff line 
/*

 * AD7792/AD7793/AD7794/AD7795 SPI ADC driver

 * AD7785/AD7792/AD7793/AD7794/AD7795 SPI ADC driver

 *

 * Copyright 2011-2012 Analog Devices Inc.

 *
@@ -54,6 +54,7 @@ struct ad7793_state { 
};



enum ad7793_supported_device_ids {

	ID_AD7785,

	ID_AD7792,

	ID_AD7793,

	ID_AD7794,
@@ -386,14 +387,14 @@ static const struct iio_info ad7793_info = { 
	.driver_module = THIS_MODULE,

};



#define DECLARE_AD7793_CHANNELS(_name, _b, _sb) \

#define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \

const struct iio_chan_spec _name##_channels[] = { \

	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \

	AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \

	AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \

	AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \

	AD_SD_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), 0), \

	AD_SD_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \

	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), (_s)), \

	AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), (_s)), \

	AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), (_s)), \

	AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), (_s)), \

	AD_SD_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), (_s)), \

	AD_SD_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), (_s)), \

	IIO_CHAN_SOFT_TIMESTAMP(6), \

}
@@ -411,12 +412,17 @@ const struct iio_chan_spec _name##_channels[] = { \ 
	IIO_CHAN_SOFT_TIMESTAMP(9), \

}



static DECLARE_AD7793_CHANNELS(ad7792, 16, 32);

static DECLARE_AD7793_CHANNELS(ad7793, 24, 32);

static DECLARE_AD7793_CHANNELS(ad7785, 20, 32, 4);

static DECLARE_AD7793_CHANNELS(ad7792, 16, 32, 0);

static DECLARE_AD7793_CHANNELS(ad7793, 24, 32, 0);

static DECLARE_AD7795_CHANNELS(ad7794, 16, 32);

static DECLARE_AD7795_CHANNELS(ad7795, 24, 32);



static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {

	[ID_AD7785] = {

		.channels = ad7785_channels,

		.num_channels = ARRAY_SIZE(ad7785_channels),

	},

	[ID_AD7792] = {

		.channels = ad7792_channels,

		.num_channels = ARRAY_SIZE(ad7792_channels),
@@ -535,6 +541,7 @@ static int ad7793_remove(struct spi_device *spi) 
}



static const struct spi_device_id ad7793_id[] = {

	{"ad7785", ID_AD7785},

	{"ad7792", ID_AD7792},

	{"ad7793", ID_AD7793},

	{"ad7794", ID_AD7794},