Extend support to read/write byte data from/to the device using
debugfs iio interface.
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Nishant Malpani <nish.malpani25@xxxxxxxxx>
---
Changes in v3:
- refactor code based on Andy's suggestions
No changes in v2
---
drivers/iio/gyro/adxrs290.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/drivers/iio/gyro/adxrs290.c b/drivers/iio/gyro/adxrs290.c
index 41b1f995a143..ca6fc234076e 100644
--- a/drivers/iio/gyro/adxrs290.c
+++ b/drivers/iio/gyro/adxrs290.c
@@ -436,6 +436,31 @@ static int adxrs290_read_avail(struct iio_dev *indio_dev,
}
}
+static int adxrs290_reg_access_rw(struct spi_device *spi, unsigned int reg,
+ unsigned int *readval)
+{
+ int ret;
+
+ ret = spi_w8r8(spi, ADXRS290_READ_REG(reg));
+ if (ret < 0)
+ return ret;
+
+ *readval = ret;
+
+ return 0;
+}
+
+static int adxrs290_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+ unsigned int writeval, unsigned int *readval)
+{
+ struct adxrs290_state *st = iio_priv(indio_dev);
+
+ if (readval)
+ return adxrs290_reg_access_rw(st->spi, reg, readval);
+ else
+ return adxrs290_spi_write_reg(st->spi, reg, writeval);
+}
+
static int adxrs290_data_rdy_trigger_set_state(struct iio_trigger *trig,
bool state)
{
@@ -551,6 +576,7 @@ static const struct iio_info adxrs290_info = {
.read_raw = &adxrs290_read_raw,
.write_raw = &adxrs290_write_raw,
.read_avail = &adxrs290_read_avail,
+ .debugfs_reg_access = &adxrs290_reg_access,
};
static int adxrs290_probe_trigger(struct iio_dev *indio_dev)
--
2.20.1
