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Subject[PATCH v3 5/7] iio:dac:ad5686: Add AD5672R/76/76R/84R/86R support
Date
The AD5684R/AD5686R are a family of 4 channel DACs with 12-bit, 14-bit and
16-bit precision respectively. The devices come either with a built-in
reference or no built-in reference.

The AD5672R/AD5676/AD5676R are similar, except that they have 8 channels
instead of 4.

Datasheets:
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5672R_5676R.pdf
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5686R_5685R_5684R.pdf

Signed-off-by: Stefan Popa <stefan.popa@analog.com>
---
Changes in v2:
- Refactored the patch to add support for new parts
Changes in v3:
- Nothing changed, just to follow the patch set version

drivers/iio/dac/ad5686.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)

diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index a753ffd..54f67d5 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -87,9 +87,14 @@ struct ad5686_state {
*/

enum ad5686_supported_device_ids {
+ ID_AD5672R,
+ ID_AD5676,
+ ID_AD5676R,
ID_AD5684,
+ ID_AD5684R,
ID_AD5685R,
ID_AD5686,
+ ID_AD5686R
};
static int ad5686_spi_write(struct ad5686_state *st,
u8 cmd, u8 addr, u16 val, u8 shift)
@@ -293,15 +298,47 @@ static struct iio_chan_spec name[] = { \
AD5868_CHANNEL(3, 8, bits, _shift), \
}

+#define DECLARE_AD5676_CHANNELS(name, bits, _shift) \
+static struct iio_chan_spec name[] = { \
+ AD5868_CHANNEL(0, 0, bits, _shift), \
+ AD5868_CHANNEL(1, 1, bits, _shift), \
+ AD5868_CHANNEL(2, 2, bits, _shift), \
+ AD5868_CHANNEL(3, 3, bits, _shift), \
+ AD5868_CHANNEL(4, 4, bits, _shift), \
+ AD5868_CHANNEL(5, 5, bits, _shift), \
+ AD5868_CHANNEL(6, 6, bits, _shift), \
+ AD5868_CHANNEL(7, 7, bits, _shift), \
+}
+
+DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4);
+DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0);
DECLARE_AD5686_CHANNELS(ad5684_channels, 12, 4);
DECLARE_AD5686_CHANNELS(ad5685r_channels, 14, 2);
DECLARE_AD5686_CHANNELS(ad5686_channels, 16, 0);

static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
+ [ID_AD5672R] = {
+ .channels = ad5672_channels,
+ .int_vref_mv = 2500,
+ .num_channels = 8,
+ },
+ [ID_AD5676] = {
+ .channels = ad5676_channels,
+ .num_channels = 8,
+ },
+ [ID_AD5676R] = {
+ .channels = ad5676_channels,
+ .int_vref_mv = 2500,
+ .num_channels = 8,
+ },
[ID_AD5684] = {
.channels = ad5684_channels,
.num_channels = 4,
+ },
+ [ID_AD5684R] = {
+ .channels = ad5684_channels,
.int_vref_mv = 2500,
+ .num_channels = 4,
},
[ID_AD5685R] = {
.channels = ad5685r_channels,
@@ -311,7 +348,11 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
[ID_AD5686] = {
.channels = ad5686_channels,
.num_channels = 4,
+ },
+ [ID_AD5686R] = {
+ .channels = ad5686_channels,
.int_vref_mv = 2500,
+ .num_channels = 4,
},
};

@@ -391,9 +432,14 @@ static int ad5686_remove(struct spi_device *spi)
}

static const struct spi_device_id ad5686_id[] = {
+ {"ad5672r", ID_AD5672R},
+ {"ad5676", ID_AD5676},
+ {"ad5676r", ID_AD5676R},
{"ad5684", ID_AD5684},
+ {"ad5684r", ID_AD5684R},
{"ad5685r", ID_AD5685R},
{"ad5686", ID_AD5686},
+ {"ad5686r", ID_AD5686R},
{}
};
MODULE_DEVICE_TABLE(spi, ad5686_id);
--
2.7.4
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