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iio: adc: driver for ti adc081s/adc101s/adc121s

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Add Linux device driver for TI single-channel CMOS
    8/10/12-bit analog-to-digital converter with a
    high-speed serial interface.

Signed-off-by: Milan Stevanovic <milan.o.stevanovic@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Milan Stevanovic 2018-01-14 21:32:39 +01:00 committed by Jonathan Cameron
parent ea9170e576
commit 4d2b6d8c0a
1 changed files with 22 additions and 1 deletions
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23
drivers/iio/adc/ad7476.c
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@ -1,5 +1,6 @@
/*
* AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
* Analog Devices AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
* TI ADC081S/ADC101S/ADC121S 8/10/12-bit SPI ADC driver
*
* Copyright 2010 Analog Devices Inc.
*
@ -56,6 +57,9 @@ enum ad7476_supported_device_ids {
ID_AD7468,
ID_AD7495,
ID_AD7940,
ID_ADC081S,
ID_ADC101S,
ID_ADC121S,
};
static irqreturn_t ad7476_trigger_handler(int irq, void *p)
@ -147,6 +151,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
}, \
}
#define ADC081S_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
BIT(IIO_CHAN_INFO_RAW))
#define AD7476_CHAN(bits) _AD7476_CHAN((bits), 13 - (bits), \
BIT(IIO_CHAN_INFO_RAW))
#define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
@ -192,6 +198,18 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
.channel[0] = AD7940_CHAN(14),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
[ID_ADC081S] = {
.channel[0] = ADC081S_CHAN(8),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
[ID_ADC101S] = {
.channel[0] = ADC081S_CHAN(10),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
[ID_ADC121S] = {
.channel[0] = ADC081S_CHAN(12),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
};
static const struct iio_info ad7476_info = {
@ -294,6 +312,9 @@ static const struct spi_device_id ad7476_id[] = {
{"ad7910", ID_AD7467},
{"ad7920", ID_AD7466},
{"ad7940", ID_AD7940},
{"adc081s", ID_ADC081S},
{"adc101s", ID_ADC101S},
{"adc121s", ID_ADC121S},
{}
};
MODULE_DEVICE_TABLE(spi, ad7476_id);