Provide a IIO debugfs register access function for the ADIS library. This
function can be used by induvidual drivers to allow raw register access via
debugfs.
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/iio/imu/adis.c | 23 +++++++++++++++++++++++
include/linux/iio/imu/adis.h | 11 +++++++++++
2 files changed, 34 insertions(+)
diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c
index 8259b77..28d4df2 100644
--- a/drivers/iio/imu/adis.c
+++ b/drivers/iio/imu/adis.c
@@ -135,6 +135,29 @@ error_ret:
}
EXPORT_SYMBOL_GPL(adis_read_reg_16);
+#ifdef CONFIG_DEBUG_FS
+
+int adis_debugfs_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg, unsigned int writeval, unsigned int *readval)
+{
+ struct adis *adis = iio_device_get_drvdata(indio_dev);
+
+ if (readval) {
+ uint16_t val16;
+ int ret;
+
+ ret = adis_read_reg_16(adis, reg, &val16);
+ *readval = val16;
+
+ return ret;
+ } else {
+ return adis_write_reg_16(adis, reg, writeval);
+ }
+}
+EXPORT_SYMBOL(adis_debugfs_reg_access);
+
+#endif
+
/**
* adis_enable_irq() - Enable or disable data ready IRQ
* @adis: The adis device
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
index 8c3304d..fce7bc3 100644
--- a/include/linux/iio/imu/adis.h
+++ b/include/linux/iio/imu/adis.h
@@ -183,4 +183,15 @@ static inline void adis_remove_trigger(struct adis *adis)
#endif /* CONFIG_IIO_BUFFER */
+#ifdef CONFIG_DEBUG_FS
+
+int adis_debugfs_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg, unsigned int writeval, unsigned int *readval);
+
+#else
+
+#define adis_debugfs_reg_access NULL
+
+#endif
+
#endif
--
1.8.0
--
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