[PATCH v5 4/5] staging: iio: adc: ad7816: Use chip_info for device capabilities

Gabriel Shahrouzi
2025-04-20T01:49:16Z

Move device-specific capability information, like the presence of a
BUSY pin, into the ad7816_chip_info structure.

Signed-off-by: Gabriel Shahrouzi <gshahrouzi@gmail.com>
---
drivers/staging/iio/adc/ad7816.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
index 39310ade770d0..ab7520a8a3da9 100644
--- a/drivers/staging/iio/adc/ad7816.c
+++ b/drivers/staging/iio/adc/ad7816.c
@@ -44,21 +44,25 @@
struct ad7816_chip_info {
const char *name;
u8 max_channels;
+ bool has_busy_pin;
};

static const struct ad7816_chip_info ad7816_info_ad7816 = {
.name = "ad7816",
.max_channels = 0,
+ .has_busy_pin = true,
};

static const struct ad7816_chip_info ad7817_info_ad7817 = {
.name = "ad7817",
.max_channels = 3,
+ .has_busy_pin = true,
};

static const struct ad7816_chip_info ad7818_info_ad7818 = {
.name = "ad7818",
.max_channels = 1,
+ .has_busy_pin = false,
};

struct ad7816_state {
@@ -98,7 +102,7 @@ static int ad7816_spi_read(struct ad7816_state *chip, u16 *data)
gpiod_set_value(chip->convert_pin, 1);
}

- if (chip->chip_info == &ad7816_info_ad7816 || chip->chip_info == &ad7817_info_ad7817) {
+ if (chip->chip_info->has_busy_pin) {
while (gpiod_get_value(chip->busy_pin))
cpu_relax();
}
--
2.43.0