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iio: dac: adi-axi-dac: support debugfs direct_reg_access

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Make it possible to read/write registers on the backend using the
debugfs interface for it.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240806-dev-backend-dac-direct-reg-access-v1-1-b84a6e8ee8a0@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nuno Sa 2024-08-06 15:35:06 +02:00 committed by Jonathan Cameron
parent 1e2ae3ce23
commit 24a9453c03
1 changed files with 12 additions and 0 deletions
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12
drivers/iio/dac/adi-axi-dac.c
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@ -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 = {