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| author | Stefan Popa <stefan.popa@analog.com> | 2018-05-18 18:22:50 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-05-20 13:36:28 +0300 |
| commit | be1b24d2454117113260f2fe59a427d01de4e131 (patch) | |
| tree | 86703420717408d4152132e41889fdb7550822f1 /drivers/iio/dac/ad5686.h | |
| parent | ed582db639cfe65e2d901fca1be8fd813a18fec4 (diff) | |
| download | linux-be1b24d2454117113260f2fe59a427d01de4e131.tar.xz | |
iio:dac:ad5686: Add AD5691R/AD5692R/AD5693/AD5693R support
The AD5691R/AD5692R/AD5693/AD5693R are a family of one channel DACs with
12-bit, 14-bit and 16-bit precision respectively. The devices have either
no built-in reference, or built-in 2.5V reference.
These devices are pretty similar to AD5671R/AD5675R and
AD5694/AD5694R/AD5695R/AD5696/AD5696R, except that they have one channel.
Another difference is that they use a write control register(addr 0x04) for
setting the power down modes and the internal reference instead of separate
registers for each function.
Datasheet:
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5693R_5692R_5691R_5693.pdf
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/dac/ad5686.h')
| -rw-r--r-- | drivers/iio/dac/ad5686.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/iio/dac/ad5686.h b/drivers/iio/dac/ad5686.h index 05f0ce9d2de1..6c6879db60e4 100644 --- a/drivers/iio/dac/ad5686.h +++ b/drivers/iio/dac/ad5686.h @@ -35,6 +35,9 @@ #define AD5686_LDAC_PWRDN_100K 0x2 #define AD5686_LDAC_PWRDN_3STATE 0x3 +#define AD5686_CMD_CONTROL_REG 0x4 +#define AD5693_REF_BIT_MSK BIT(12) + /** * ad5686_supported_device_ids: */ @@ -49,6 +52,10 @@ enum ad5686_supported_device_ids { ID_AD5685R, ID_AD5686, ID_AD5686R, + ID_AD5691R, + ID_AD5692R, + ID_AD5693, + ID_AD5693R, ID_AD5694, ID_AD5694R, ID_AD5695R, @@ -56,6 +63,11 @@ enum ad5686_supported_device_ids { ID_AD5696R, }; +enum ad5686_regmap_type { + AD5686_REGMAP, + AD5693_REGMAP +}; + struct ad5686_state; typedef int (*ad5686_write_func)(struct ad5686_state *st, @@ -68,12 +80,14 @@ typedef int (*ad5686_read_func)(struct ad5686_state *st, u8 addr); * @int_vref_mv: AD5620/40/60: the internal reference voltage * @num_channels: number of channels * @channel: channel specification + * @regmap_type: register map layout variant */ struct ad5686_chip_info { u16 int_vref_mv; unsigned int num_channels; struct iio_chan_spec *channels; + enum ad5686_regmap_type regmap_type; }; /** @@ -84,6 +98,7 @@ struct ad5686_chip_info { * @vref_mv: actual reference voltage used * @pwr_down_mask: power down mask * @pwr_down_mode: current power down mode + * @use_internal_vref: set to true if the internal reference voltage is used * @data: spi transfer buffers */ @@ -96,6 +111,7 @@ struct ad5686_state { unsigned int pwr_down_mode; ad5686_write_func write; ad5686_read_func read; + bool use_internal_vref; /* * DMA (thus cache coherency maintenance) requires the |