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Commit d69051b4 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio:ad7192: Add support for the AD7193 



The AD7193 is mostly register map compatible to the AD7192. The main
difference is that it has 8 instead of 4 inputs, so the way the input
channels are selected is slightly different.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 9d452184

drivers/staging/iio/adc/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -58,12 +58,12 @@ config AD7816 
	  temperature sensors and ADC.



config AD7192

	tristate "Analog Devices AD7190 AD7192 AD7195 ADC driver"

	tristate "Analog Devices AD7190 AD7192 AD7193 AD7195 ADC driver"

	depends on SPI

	select AD_SIGMA_DELTA

	help

	  Say yes here to build support for Analog Devices AD7190,

	  AD7192 or AD7195 SPI analog to digital converters (ADC).

	  AD7192, AD7193 or AD7195 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/ad7192.c

+61 −15
Original line number Diff line number Diff line 
/*

 * AD7190 AD7192 AD7195 SPI ADC driver

 * AD7190 AD7192 AD7193 AD7195 SPI ADC driver

 *

 * Copyright 2011-2012 Analog Devices Inc.

 * Copyright 2011-2015 Analog Devices Inc.

 *

 * Licensed under the GPL-2.

 */
@@ -92,26 +92,43 @@ 


#define AD7192_CONF_CHOP	BIT(23) /* CHOP enable */

#define AD7192_CONF_REFSEL	BIT(20) /* REFIN1/REFIN2 Reference Select */

#define AD7192_CONF_CHAN(x)	(((1 << (x)) & 0xFF) << 8) /* Channel select */

#define AD7192_CONF_CHAN_MASK	(0xFF << 8) /* Channel select mask */

#define AD7192_CONF_CHAN(x)	((x) << 8) /* Channel select */

#define AD7192_CONF_CHAN_MASK	(0x7FF << 8) /* Channel select mask */

#define AD7192_CONF_BURN	BIT(7) /* Burnout current enable */

#define AD7192_CONF_REFDET	BIT(6) /* Reference detect enable */

#define AD7192_CONF_BUF		BIT(4) /* Buffered Mode Enable */

#define AD7192_CONF_UNIPOLAR	BIT(3) /* Unipolar/Bipolar Enable */

#define AD7192_CONF_GAIN(x)	((x) & 0x7) /* Gain Select */



#define AD7192_CH_AIN1P_AIN2M	0 /* AIN1(+) - AIN2(-) */

#define AD7192_CH_AIN3P_AIN4M	1 /* AIN3(+) - AIN4(-) */

#define AD7192_CH_TEMP		2 /* Temp Sensor */

#define AD7192_CH_AIN2P_AIN2M	3 /* AIN2(+) - AIN2(-) */

#define AD7192_CH_AIN1		4 /* AIN1 - AINCOM */

#define AD7192_CH_AIN2		5 /* AIN2 - AINCOM */

#define AD7192_CH_AIN3		6 /* AIN3 - AINCOM */

#define AD7192_CH_AIN4		7 /* AIN4 - AINCOM */

#define AD7192_CH_AIN1P_AIN2M	BIT(0) /* AIN1(+) - AIN2(-) */

#define AD7192_CH_AIN3P_AIN4M	BIT(1) /* AIN3(+) - AIN4(-) */

#define AD7192_CH_TEMP		BIT(2) /* Temp Sensor */

#define AD7192_CH_AIN2P_AIN2M	BIT(3) /* AIN2(+) - AIN2(-) */

#define AD7192_CH_AIN1		BIT(4) /* AIN1 - AINCOM */

#define AD7192_CH_AIN2		BIT(5) /* AIN2 - AINCOM */

#define AD7192_CH_AIN3		BIT(6) /* AIN3 - AINCOM */

#define AD7192_CH_AIN4		BIT(7) /* AIN4 - AINCOM */



#define AD7193_CH_AIN1P_AIN2M	0x000  /* AIN1(+) - AIN2(-) */

#define AD7193_CH_AIN3P_AIN4M	0x001  /* AIN3(+) - AIN4(-) */

#define AD7193_CH_AIN5P_AIN6M	0x002  /* AIN5(+) - AIN6(-) */

#define AD7193_CH_AIN7P_AIN8M	0x004  /* AIN7(+) - AIN8(-) */

#define AD7193_CH_TEMP		0x100 /* Temp senseor */

#define AD7193_CH_AIN2P_AIN2M	0x200 /* AIN2(+) - AIN2(-) */

#define AD7193_CH_AIN1		0x401 /* AIN1 - AINCOM */

#define AD7193_CH_AIN2		0x402 /* AIN2 - AINCOM */

#define AD7193_CH_AIN3		0x404 /* AIN3 - AINCOM */

#define AD7193_CH_AIN4		0x408 /* AIN4 - AINCOM */

#define AD7193_CH_AIN5		0x410 /* AIN5 - AINCOM */

#define AD7193_CH_AIN6		0x420 /* AIN6 - AINCOM */

#define AD7193_CH_AIN7		0x440 /* AIN7 - AINCOM */

#define AD7193_CH_AIN8		0x480 /* AIN7 - AINCOM */

#define AD7193_CH_AINCOM	0x600 /* AINCOM - AINCOM */



/* ID Register Bit Designations (AD7192_REG_ID) */

#define ID_AD7190		0x4

#define ID_AD7192		0x0

#define ID_AD7193		0x2

#define ID_AD7195		0x6

#define AD7192_ID_MASK		0x0F
@@ -607,6 +624,24 @@ static const struct iio_chan_spec ad7192_channels[] = { 
	IIO_CHAN_SOFT_TIMESTAMP(8),

};



static const struct iio_chan_spec ad7193_channels[] = {

	AD_SD_DIFF_CHANNEL(0, 1, 2, AD7193_CH_AIN1P_AIN2M, 24, 32, 0),

	AD_SD_DIFF_CHANNEL(1, 3, 4, AD7193_CH_AIN3P_AIN4M, 24, 32, 0),

	AD_SD_DIFF_CHANNEL(2, 5, 6, AD7193_CH_AIN5P_AIN6M, 24, 32, 0),

	AD_SD_DIFF_CHANNEL(3, 7, 8, AD7193_CH_AIN7P_AIN8M, 24, 32, 0),

	AD_SD_TEMP_CHANNEL(4, AD7193_CH_TEMP, 24, 32, 0),

	AD_SD_SHORTED_CHANNEL(5, 2, AD7193_CH_AIN2P_AIN2M, 24, 32, 0),

	AD_SD_CHANNEL(6, 1, AD7193_CH_AIN1, 24, 32, 0),

	AD_SD_CHANNEL(7, 2, AD7193_CH_AIN2, 24, 32, 0),

	AD_SD_CHANNEL(8, 3, AD7193_CH_AIN3, 24, 32, 0),

	AD_SD_CHANNEL(9, 4, AD7193_CH_AIN4, 24, 32, 0),

	AD_SD_CHANNEL(10, 5, AD7193_CH_AIN5, 24, 32, 0),

	AD_SD_CHANNEL(11, 6, AD7193_CH_AIN6, 24, 32, 0),

	AD_SD_CHANNEL(12, 7, AD7193_CH_AIN7, 24, 32, 0),

	AD_SD_CHANNEL(13, 8, AD7193_CH_AIN8, 24, 32, 0),

	IIO_CHAN_SOFT_TIMESTAMP(14),

};



static int ad7192_probe(struct spi_device *spi)

{

	const struct ad7192_platform_data *pdata = dev_get_platdata(&spi->dev);
@@ -651,8 +686,18 @@ static int ad7192_probe(struct spi_device *spi) 
	indio_dev->dev.parent = &spi->dev;

	indio_dev->name = spi_get_device_id(spi)->name;

	indio_dev->modes = INDIO_DIRECT_MODE;



	switch (st->devid) {

	case ID_AD7193:

		indio_dev->channels = ad7193_channels;

		indio_dev->num_channels = ARRAY_SIZE(ad7193_channels);

		break;

	default:

		indio_dev->channels = ad7192_channels;

		indio_dev->num_channels = ARRAY_SIZE(ad7192_channels);

		break;

	}



	if (st->devid == ID_AD7195)

		indio_dev->info = &ad7195_info;

	else
@@ -699,6 +744,7 @@ static int ad7192_remove(struct spi_device *spi) 
static const struct spi_device_id ad7192_id[] = {

	{"ad7190", ID_AD7190},

	{"ad7192", ID_AD7192},

	{"ad7193", ID_AD7193},

	{"ad7195", ID_AD7195},

	{}

};
@@ -715,5 +761,5 @@ static struct spi_driver ad7192_driver = { 
module_spi_driver(ad7192_driver);



MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");

MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7195 ADC");

MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7193, AD7195 ADC");

MODULE_LICENSE("GPL v2");