diff options
| -rw-r--r-- | drivers/iio/adc/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/iio/adc/ad7923.c | 63 |
2 files changed, 53 insertions, 16 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 9c45c0f3f127..ab0767e6727e 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -31,13 +31,13 @@ config AD7298 module will be called ad7298. config AD7923 - tristate "Analog Devices AD7923 ADC driver" + tristate "Analog Devices AD7923 and similar ADCs driver" depends on SPI select IIO_BUFFER select IIO_TRIGGERED_BUFFER help - Say yes here to build support for Analog Devices AD7923 - 4 Channel ADC with temperature sensor. + Say yes here to build support for Analog Devices + AD7904, AD7914, AD7923, AD7924 4 Channel ADCs. To compile this driver as a module, choose M here: the module will be called ad7923. diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c index 11ccc42b25a6..97fa0d3dc4aa 100644 --- a/drivers/iio/adc/ad7923.c +++ b/drivers/iio/adc/ad7923.c @@ -1,5 +1,5 @@ /* - * AD7923 SPI ADC driver + * AD7904/AD7914/AD7923/AD7924 SPI ADC driver * * Copyright 2011 Analog Devices Inc (from AD7923 Driver) * Copyright 2012 CS Systemes d'Information @@ -70,7 +70,18 @@ struct ad7923_state { __be16 tx_buf[4]; }; -#define AD7923_V_CHAN(index) \ +struct ad7923_chip_info { + const struct iio_chan_spec *channels; + unsigned int num_channels; +}; + +enum ad7923_id { + AD7904, + AD7914, + AD7924, +}; + +#define AD7923_V_CHAN(index, bits) \ { \ .type = IIO_VOLTAGE, \ .indexed = 1, \ @@ -81,18 +92,38 @@ struct ad7923_state { .scan_index = index, \ .scan_type = { \ .sign = 'u', \ - .realbits = 12, \ + .realbits = (bits), \ .storagebits = 16, \ .endianness = IIO_BE, \ }, \ } -static const struct iio_chan_spec ad7923_channels[] = { - AD7923_V_CHAN(0), - AD7923_V_CHAN(1), - AD7923_V_CHAN(2), - AD7923_V_CHAN(3), - IIO_CHAN_SOFT_TIMESTAMP(4), +#define DECLARE_AD7923_CHANNELS(name, bits) \ +const struct iio_chan_spec name ## _channels[] = { \ + AD7923_V_CHAN(0, bits), \ + AD7923_V_CHAN(1, bits), \ + AD7923_V_CHAN(2, bits), \ + AD7923_V_CHAN(3, bits), \ + IIO_CHAN_SOFT_TIMESTAMP(4), \ +} + +static DECLARE_AD7923_CHANNELS(ad7904, 8); +static DECLARE_AD7923_CHANNELS(ad7914, 10); +static DECLARE_AD7923_CHANNELS(ad7924, 12); + +static const struct ad7923_chip_info ad7923_chip_info[] = { + [AD7904] = { + .channels = ad7904_channels, + .num_channels = ARRAY_SIZE(ad7904_channels), + }, + [AD7914] = { + .channels = ad7914_channels, + .num_channels = ARRAY_SIZE(ad7914_channels), + }, + [AD7924] = { + .channels = ad7924_channels, + .num_channels = ARRAY_SIZE(ad7924_channels), + }, }; /** @@ -245,6 +276,7 @@ static int ad7923_probe(struct spi_device *spi) { struct ad7923_state *st; struct iio_dev *indio_dev = iio_device_alloc(sizeof(*st)); + const struct ad7923_chip_info *info; int ret; if (indio_dev == NULL) @@ -258,11 +290,13 @@ static int ad7923_probe(struct spi_device *spi) st->settings = AD7923_CODING | AD7923_RANGE | AD7923_PM_MODE_WRITE(AD7923_PM_MODE_OPS); + info = &ad7923_chip_info[spi_get_device_id(spi)->driver_data]; + indio_dev->name = spi_get_device_id(spi)->name; indio_dev->dev.parent = &spi->dev; indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->channels = ad7923_channels; - indio_dev->num_channels = ARRAY_SIZE(ad7923_channels); + indio_dev->channels = info->channels; + indio_dev->num_channels = info->num_channels; indio_dev->info = &ad7923_info; /* Setup default message */ @@ -324,7 +358,10 @@ static int ad7923_remove(struct spi_device *spi) } static const struct spi_device_id ad7923_id[] = { - {"ad7923", 0}, + {"ad7904", AD7904}, + {"ad7914", AD7914}, + {"ad7923", AD7924}, + {"ad7924", AD7924}, {} }; MODULE_DEVICE_TABLE(spi, ad7923_id); @@ -342,5 +379,5 @@ module_spi_driver(ad7923_driver); MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>"); MODULE_AUTHOR("Patrick Vasseur <patrick.vasseur@c-s.fr>"); -MODULE_DESCRIPTION("Analog Devices AD7923 ADC"); +MODULE_DESCRIPTION("Analog Devices AD7904/AD7914/AD7923/AD7924 ADC"); MODULE_LICENSE("GPL v2"); |