From: Nuno Sa <nuno.sa@xxxxxxxxxx>
Make it possible to read/write registers on the backend using the
debugfs interface for it.
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
---
drivers/iio/dac/adi-axi-dac.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c
index 9655705b158b..0cb00f3bec04 100644
--- a/drivers/iio/dac/adi-axi-dac.c
+++ b/drivers/iio/dac/adi-axi-dac.c
@@ -507,6 +507,17 @@ static int axi_dac_set_sample_rate(struct iio_backend *back, unsigned int chan,
return 0;
}
+static int axi_dac_reg_access(struct iio_backend *back, unsigned int reg,
+ unsigned int writeval, unsigned int *readval)
+{
+ struct axi_dac_state *st = iio_backend_get_priv(back);
+
+ if (readval)
+ return regmap_read(st->regmap, reg, readval);
+
+ return regmap_write(st->regmap, reg, writeval);
+}
+
static const struct iio_backend_ops axi_dac_generic_ops = {
.enable = axi_dac_enable,
.disable = axi_dac_disable,
@@ -517,6 +528,7 @@ static const struct iio_backend_ops axi_dac_generic_ops = {
.ext_info_get = axi_dac_ext_info_get,
.data_source_set = axi_dac_data_source_set,
.set_sample_rate = axi_dac_set_sample_rate,
+ .debugfs_reg_access = iio_backend_debugfs_ptr(axi_dac_reg_access),
};
static const struct iio_backend_info axi_dac_generic = {
--
2.45.2
