diff options
| author | Urs Fässler <urs.fassler@bytesatwork.ch> | 2015-05-18 16:22:44 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-05-23 14:42:43 +0300 |
| commit | 2a67dfba7fae36af0233452d19b40594f62bc019 (patch) | |
| tree | dec6b94e38d502d863bff7fbef4d9548e6cd88cf /drivers/iio | |
| parent | 1ce87f21edf6a071a7cc6bc77d628d7c7650d0d8 (diff) | |
| download | linux-2a67dfba7fae36af0233452d19b40594f62bc019.tar.xz | |
iio:adc128s052: add support for adc122s021
Signed-off-by: Urs Fässler <urs.fassler@bytesatwork.ch>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/iio/adc/ti-adc128s052.c | 30 |
2 files changed, 26 insertions, 8 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index cee50de76fb1..7c5565891cb8 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -292,11 +292,11 @@ config TI_ADC081C called ti-adc081c. config TI_ADC128S052 - tristate "Texas Instruments ADC128S052" + tristate "Texas Instruments ADC128S052/ADC122S021" depends on SPI help If you say yes here you get support for Texas Instruments ADC128S052 - chip. + and ADC122S021 chips. This driver can also be built as a module. If so, the module will be called ti-adc128s052. diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index 655cb564ec54..915be6b60097 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -1,9 +1,10 @@ /* * Copyright (C) 2014 Angelo Compagnucci <angelo.compagnucci@gmail.com> * - * Driver for Texas Instruments' ADC128S052 ADC chip. - * Datasheet can be found here: + * Driver for Texas Instruments' ADC128S052 and ADC122S021 ADC chip. + * Datasheets can be found here: * http://www.ti.com/lit/ds/symlink/adc128s052.pdf + * http://www.ti.com/lit/ds/symlink/adc122s021.pdf * * 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 @@ -16,6 +17,11 @@ #include <linux/iio/iio.h> #include <linux/regulator/consumer.h> +struct adc128_configuration { + const struct iio_chan_spec *channels; + u8 num_channels; +}; + struct adc128 { struct spi_device *spi; @@ -92,7 +98,7 @@ static int adc128_read_raw(struct iio_dev *indio_dev, .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) \ } -static const struct iio_chan_spec adc128_channels[] = { +static const struct iio_chan_spec adc128s052_channels[] = { ADC128_VOLTAGE_CHANNEL(0), ADC128_VOLTAGE_CHANNEL(1), ADC128_VOLTAGE_CHANNEL(2), @@ -103,6 +109,16 @@ static const struct iio_chan_spec adc128_channels[] = { ADC128_VOLTAGE_CHANNEL(7), }; +static const struct iio_chan_spec adc122s021_channels[] = { + ADC128_VOLTAGE_CHANNEL(0), + ADC128_VOLTAGE_CHANNEL(1), +}; + +static const struct adc128_configuration adc128_config[] = { + { adc128s052_channels, ARRAY_SIZE(adc128s052_channels) }, + { adc122s021_channels, ARRAY_SIZE(adc122s021_channels) }, +}; + static const struct iio_info adc128_info = { .read_raw = adc128_read_raw, .driver_module = THIS_MODULE, @@ -112,6 +128,7 @@ static int adc128_probe(struct spi_device *spi) { struct iio_dev *indio_dev; struct adc128 *adc; + int config = spi_get_device_id(spi)->driver_data; int ret; indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc)); @@ -128,8 +145,8 @@ static int adc128_probe(struct spi_device *spi) indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &adc128_info; - indio_dev->channels = adc128_channels; - indio_dev->num_channels = ARRAY_SIZE(adc128_channels); + indio_dev->channels = adc128_config[config].channels; + indio_dev->num_channels = adc128_config[config].num_channels; adc->reg = devm_regulator_get(&spi->dev, "vref"); if (IS_ERR(adc->reg)) @@ -158,7 +175,8 @@ static int adc128_remove(struct spi_device *spi) } static const struct spi_device_id adc128_id[] = { - { "adc128s052", 0}, + { "adc128s052", 0}, /* index into adc128_config */ + { "adc122s021", 1}, { } }; MODULE_DEVICE_TABLE(spi, adc128_id); |