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iio: adc: ad4851: add spi 3-wire support

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Add support for 3-wire configuration within the driver.
By default 4-wire configuration is used.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250626104024.8645-2-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Antoniu Miclaus
2025-06-26 13:40:24 +03:00
committed by Jonathan Cameron
parent 0fbd8017ab
commit 695b7c42d9
1 changed files with 6 additions and 4 deletions
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10
drivers/iio/adc/ad4851.c
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@@ -444,10 +444,12 @@ static int ad4851_setup(struct ad4851_state *st)
if (ret)
return ret;
ret = regmap_write(st->regmap, AD4851_REG_INTERFACE_CONFIG_A,
AD4851_SDO_ENABLE);
if (ret)
return ret;
if (!(st->spi->mode & SPI_3WIRE)) {
ret = regmap_write(st->regmap, AD4851_REG_INTERFACE_CONFIG_A,
AD4851_SDO_ENABLE);
if (ret)
return ret;
}
ret = regmap_read(st->regmap, AD4851_REG_PRODUCT_ID_L, &product_id);
if (ret)