diff options
| author | Marcelo Schmitt <marcelo.schmitt@analog.com> | 2023-12-19 23:28:45 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2023-12-26 18:42:01 +0300 |
| commit | 7e3ebda32d6e8f10acbde2b204f6bf4020f7ef95 (patch) | |
| tree | 082a810b617e09b27febd85d1cca71e26f345717 /drivers/iio/adc/ad7091r5.c | |
| parent | 6ff545a9b87cdc920ee9988fec2edae14c1f5ecb (diff) | |
| download | linux-7e3ebda32d6e8f10acbde2b204f6bf4020f7ef95.tar.xz | |
iio: adc: ad7091r: Set device mode through chip_info callback
AD7091R-5 devices have a few modes of operation (sample, command,
autocycle) which are set by writing to configuration register fields.
Follow up patches will add support for AD7091R-2/-4/-8 which don't have
those operation modes nor the register fields for setting them.
Make ad7091r_set_mode() a callback function of AD7091R chip_info struct
so the base driver can appropriately handle each design without having
to check which actual chip is connected.
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Link: https://lore.kernel.org/r/5140336980f66c2c45f05895c3b68e2f65fba1c2.1703013352.git.marcelo.schmitt1@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/ad7091r5.c')
| -rw-r--r-- | drivers/iio/adc/ad7091r5.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7091r5.c b/drivers/iio/adc/ad7091r5.c index cb4c7865f0cc..e1163b42609c 100644 --- a/drivers/iio/adc/ad7091r5.c +++ b/drivers/iio/adc/ad7091r5.c @@ -26,11 +26,40 @@ static const struct iio_chan_spec ad7091r5_channels_noirq[] = { AD7091R_CHANNEL(3, 12, NULL, 0), }; +static int ad7091r5_set_mode(struct ad7091r_state *st, enum ad7091r_mode mode) +{ + int ret, conf; + + switch (mode) { + case AD7091R_MODE_SAMPLE: + conf = 0; + break; + case AD7091R_MODE_COMMAND: + conf = AD7091R_REG_CONF_CMD; + break; + case AD7091R_MODE_AUTOCYCLE: + conf = AD7091R_REG_CONF_AUTO; + break; + default: + return -EINVAL; + } + + ret = regmap_update_bits(st->map, AD7091R_REG_CONF, + AD7091R_REG_CONF_MODE_MASK, conf); + if (ret) + return ret; + + st->mode = mode; + + return 0; +} + static const struct ad7091r_chip_info ad7091r5_chip_info_irq = { .name = "ad7091r-5", .channels = ad7091r5_channels_irq, .num_channels = ARRAY_SIZE(ad7091r5_channels_irq), .vref_mV = 2500, + .set_mode = &ad7091r5_set_mode, }; static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = { @@ -38,6 +67,7 @@ static const struct ad7091r_chip_info ad7091r5_chip_info_noirq = { .channels = ad7091r5_channels_noirq, .num_channels = ARRAY_SIZE(ad7091r5_channels_noirq), .vref_mV = 2500, + .set_mode = &ad7091r5_set_mode, }; static const struct regmap_config ad7091r_regmap_config = { |