diff options
Diffstat (limited to 'kernel/drivers/iio/adc/ti-adc128s052.c')
| -rw-r--r-- | kernel/drivers/iio/adc/ti-adc128s052.c | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/kernel/drivers/iio/adc/ti-adc128s052.c b/kernel/drivers/iio/adc/ti-adc128s052.c index 655cb564e..ff6f7f63c 100644 --- a/kernel/drivers/iio/adc/ti-adc128s052.c +++ b/kernel/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)) @@ -157,8 +174,16 @@ static int adc128_remove(struct spi_device *spi) return 0; } +static const struct of_device_id adc128_of_match[] = { + { .compatible = "ti,adc128s052", }, + { .compatible = "ti,adc122s021", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, adc128_of_match); + static const struct spi_device_id adc128_id[] = { - { "adc128s052", 0}, + { "adc128s052", 0}, /* index into adc128_config */ + { "adc122s021", 1}, { } }; MODULE_DEVICE_TABLE(spi, adc128_id); @@ -166,7 +191,7 @@ MODULE_DEVICE_TABLE(spi, adc128_id); static struct spi_driver adc128_driver = { .driver = { .name = "adc128s052", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(adc128_of_match), }, .probe = adc128_probe, .remove = adc128_remove, |