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iio: dac: ad5686: add support for AD5338R 

The AD5338R is a 10-bit DAC with 2 outputs and an internal 2.5V
reference (enabled by default). The register configuration is nearly
identical to the AD5696R DAC that's already supported by this driver,
with the channel selection bits being the only thing different.

Signed-off-by: Michael Auchter <michael.auchter@ni.com>
Link: https://lore.kernel.org/r/20200924195215.49443-1-michael.auchter@ni.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Michael Auchter 2020-09-24 14:52:12 -05:00 committed by Jonathan Cameron
parent 41f0666f0f
commit 7dc8faeab3
4 changed files with 19 additions and 3 deletions
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7
drivers/iio/dac/Kconfig
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@ -141,9 +141,10 @@ config AD5696_I2C
depends on I2C depends on I2C
select AD5686 select AD5686
help help
Say yes here to build support for Analog Devices AD5671R, AD5675R, Say yes here to build support for Analog Devices AD5311R, AD5338R,
AD5694, AD5694R, AD5695R, AD5696, AD5696R Voltage Output Digital to AD5671R, AD5675R, AD5691R, AD5692R, AD5693, AD5693R, AD5694, AD5694R,
Analog Converter. AD5695R, AD5696, and AD5696R Digital to Analog converters.
To compile this driver as a module, choose M here: the module will be To compile this driver as a module, choose M here: the module will be
called ad5696. called ad5696.

13
drivers/iio/dac/ad5686.c
View File

@ -210,6 +210,12 @@ static const struct iio_chan_spec name[] = { \
AD5868_CHANNEL(0, 0, bits, _shift), \ AD5868_CHANNEL(0, 0, bits, _shift), \
} }
#define DECLARE_AD5338_CHANNELS(name, bits, _shift) \
static const struct iio_chan_spec name[] = { \
AD5868_CHANNEL(0, 1, bits, _shift), \
AD5868_CHANNEL(1, 8, bits, _shift), \
}
#define DECLARE_AD5686_CHANNELS(name, bits, _shift) \ #define DECLARE_AD5686_CHANNELS(name, bits, _shift) \
static const struct iio_chan_spec name[] = { \ static const struct iio_chan_spec name[] = { \
AD5868_CHANNEL(0, 1, bits, _shift), \ AD5868_CHANNEL(0, 1, bits, _shift), \
@ -252,6 +258,7 @@ static const struct iio_chan_spec name[] = { \
DECLARE_AD5693_CHANNELS(ad5310r_channels, 10, 2); DECLARE_AD5693_CHANNELS(ad5310r_channels, 10, 2);
DECLARE_AD5693_CHANNELS(ad5311r_channels, 10, 6); DECLARE_AD5693_CHANNELS(ad5311r_channels, 10, 6);
DECLARE_AD5338_CHANNELS(ad5338r_channels, 10, 6);
DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4); DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4);
DECLARE_AD5679_CHANNELS(ad5674r_channels, 12, 4); DECLARE_AD5679_CHANNELS(ad5674r_channels, 12, 4);
DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0); DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0);
@ -276,6 +283,12 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
.num_channels = 1, .num_channels = 1,
.regmap_type = AD5693_REGMAP, .regmap_type = AD5693_REGMAP,
}, },
[ID_AD5338R] = {
.channels = ad5338r_channels,
.int_vref_mv = 2500,
.num_channels = 2,
.regmap_type = AD5686_REGMAP,
},
[ID_AD5671R] = { [ID_AD5671R] = {
.channels = ad5672_channels, .channels = ad5672_channels,
.int_vref_mv = 2500, .int_vref_mv = 2500,

1
drivers/iio/dac/ad5686.h
View File

@ -52,6 +52,7 @@
enum ad5686_supported_device_ids { enum ad5686_supported_device_ids {
ID_AD5310R, ID_AD5310R,
ID_AD5311R, ID_AD5311R,
ID_AD5338R,
ID_AD5671R, ID_AD5671R,
ID_AD5672R, ID_AD5672R,
ID_AD5674R, ID_AD5674R,

1
drivers/iio/dac/ad5696-i2c.c
View File

@ -72,6 +72,7 @@ static int ad5686_i2c_remove(struct i2c_client *i2c)
static const struct i2c_device_id ad5686_i2c_id[] = { static const struct i2c_device_id ad5686_i2c_id[] = {
{"ad5311r", ID_AD5311R}, {"ad5311r", ID_AD5311R},
{"ad5338r", ID_AD5338R},
{"ad5671r", ID_AD5671R}, {"ad5671r", ID_AD5671R},
{"ad5675r", ID_AD5675R}, {"ad5675r", ID_AD5675R},
{"ad5691r", ID_AD5691R}, {"ad5691r", ID_AD5691R},