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iio:adc128s052: add support for adc124s021 

Signed-off-by: Oliver Stäbler <oliver.staebler@bytesatwork.ch>
Reviewed-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Oliver Stäbler 2015-12-09 10:24:04 +01:00 committed by Jonathan Cameron
parent 9ab655a32e
commit b41fa86b67
3 changed files with 17 additions and 6 deletions
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4
Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt
View File

@ -1,7 +1,7 @@
* Texas Instruments' ADC128S052 and ADC122S021 ADC chip * Texas Instruments' ADC128S052, ADC122S021 and ADC124S021 ADC chip
Required properties: Required properties:
- compatible: Should be "ti,adc128s052" or "ti,adc122s021" - compatible: Should be "ti,adc128s052", "ti,adc122s021" or "ti,adc124s021"
- reg: spi chip select number for the device - reg: spi chip select number for the device
- vref-supply: The regulator supply for ADC reference voltage - vref-supply: The regulator supply for ADC reference voltage

6
drivers/iio/adc/Kconfig
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@ -332,11 +332,11 @@ config TI_ADC081C
called ti-adc081c. called ti-adc081c.
config TI_ADC128S052 config TI_ADC128S052
tristate "Texas Instruments ADC128S052/ADC122S021" tristate "Texas Instruments ADC128S052/ADC122S021/ADC124S021"
depends on SPI depends on SPI
help help
If you say yes here you get support for Texas Instruments ADC128S052 If you say yes here you get support for Texas Instruments ADC128S052,
and ADC122S021 chips. ADC122S021 and ADC124S021 chips.
This driver can also be built as a module. If so, the module will be This driver can also be built as a module. If so, the module will be
called ti-adc128s052. called ti-adc128s052.

13
drivers/iio/adc/ti-adc128s052.c
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@ -1,10 +1,11 @@
/* /*
* Copyright (C) 2014 Angelo Compagnucci <angelo.compagnucci@gmail.com> * Copyright (C) 2014 Angelo Compagnucci <angelo.compagnucci@gmail.com>
* *
* Driver for Texas Instruments' ADC128S052 and ADC122S021 ADC chip. * Driver for Texas Instruments' ADC128S052, ADC122S021 and ADC124S021 ADC chip.
* Datasheets can be found here: * Datasheets can be found here:
* http://www.ti.com/lit/ds/symlink/adc128s052.pdf * http://www.ti.com/lit/ds/symlink/adc128s052.pdf
* http://www.ti.com/lit/ds/symlink/adc122s021.pdf * http://www.ti.com/lit/ds/symlink/adc122s021.pdf
* http://www.ti.com/lit/ds/symlink/adc124s021.pdf
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License version 2 as
@ -114,9 +115,17 @@ static const struct iio_chan_spec adc122s021_channels[] = {
ADC128_VOLTAGE_CHANNEL(1), ADC128_VOLTAGE_CHANNEL(1),
}; };
static const struct iio_chan_spec adc124s021_channels[] = {
ADC128_VOLTAGE_CHANNEL(0),
ADC128_VOLTAGE_CHANNEL(1),
ADC128_VOLTAGE_CHANNEL(2),
ADC128_VOLTAGE_CHANNEL(3),
};
static const struct adc128_configuration adc128_config[] = { static const struct adc128_configuration adc128_config[] = {
{ adc128s052_channels, ARRAY_SIZE(adc128s052_channels) }, { adc128s052_channels, ARRAY_SIZE(adc128s052_channels) },
{ adc122s021_channels, ARRAY_SIZE(adc122s021_channels) }, { adc122s021_channels, ARRAY_SIZE(adc122s021_channels) },
{ adc124s021_channels, ARRAY_SIZE(adc124s021_channels) },
}; };
static const struct iio_info adc128_info = { static const struct iio_info adc128_info = {
@ -177,6 +186,7 @@ static int adc128_remove(struct spi_device *spi)
static const struct of_device_id adc128_of_match[] = { static const struct of_device_id adc128_of_match[] = {
{ .compatible = "ti,adc128s052", }, { .compatible = "ti,adc128s052", },
{ .compatible = "ti,adc122s021", }, { .compatible = "ti,adc122s021", },
{ .compatible = "ti,adc124s021", },
{ /* sentinel */ }, { /* sentinel */ },
}; };
MODULE_DEVICE_TABLE(of, adc128_of_match); MODULE_DEVICE_TABLE(of, adc128_of_match);
@ -184,6 +194,7 @@ MODULE_DEVICE_TABLE(of, adc128_of_match);
static const struct spi_device_id adc128_id[] = { static const struct spi_device_id adc128_id[] = {
{ "adc128s052", 0}, /* index into adc128_config */ { "adc128s052", 0}, /* index into adc128_config */
{ "adc122s021", 1}, { "adc122s021", 1},
{ "adc124s021", 2},
{ } { }
}; };
MODULE_DEVICE_TABLE(spi, adc128_id); MODULE_DEVICE_TABLE(spi, adc128_id);