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iio:ad7476: Add support for ad7273/ad7274/ad7276/ad7277/ad7278

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The ad7276/ad7277/ad7278 are similar to the ad7476/ad7477/ad7478 but have the
same number of leading zeros as the ad7940. The ad7273/ad7274 have a extra pin
for VREF where as for the ad7276/ad7277/ad7278 VREF is taken from VDD, but
otherwise they are compatible to the ad7276/ad7277.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2012-09-10 10:33:00 +01:00 committed by Jonathan Cameron
parent 4c337de870
commit c26cc89e8d
2 changed files with 23 additions and 3 deletions
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6
drivers/iio/adc/Kconfig
View File

@ -36,9 +36,9 @@ config AD7476
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for Analog Devices AD7475, AD7476, AD7477,
AD7478, AD7466, AD7467, AD7468, AD7495, AD7910, AD7920, AD7920 SPI analog
to digital converters (ADC).
Say yes here to build support for Analog Devices AD7273, AD7274, AD7276,
AD7277, AD7278, AD7475, AD7476, AD7477, AD7478, AD7466, AD7467, AD7468,
AD7495, AD7910, AD7920, AD7920 SPI analog to digital converters (ADC).
If unsure, say N (but it's safe to say "Y").

20
drivers/iio/adc/ad7476.c
View File

@ -45,6 +45,9 @@ struct ad7476_state {
};
enum ad7476_supported_device_ids {
ID_AD7276,
ID_AD7277,
ID_AD7278,
ID_AD7466,
ID_AD7467,
ID_AD7468,
@ -146,6 +149,18 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
#define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits))
static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
[ID_AD7276] = {
.channel[0] = AD7940_CHAN(12),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
[ID_AD7277] = {
.channel[0] = AD7940_CHAN(10),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
[ID_AD7278] = {
.channel[0] = AD7940_CHAN(8),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
},
[ID_AD7466] = {
.channel[0] = AD7476_CHAN(12),
.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
@ -256,6 +271,11 @@ static int __devexit ad7476_remove(struct spi_device *spi)
}
static const struct spi_device_id ad7476_id[] = {
{"ad7273", ID_AD7277},
{"ad7274", ID_AD7276},
{"ad7276", ID_AD7276},
{"ad7277", ID_AD7277},
{"ad7278", ID_AD7278},
{"ad7466", ID_AD7466},
{"ad7467", ID_AD7467},
{"ad7468", ID_AD7468},