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iio:imu:adis: Add debugfs register access support 

Provide a IIO debugfs register access function for the ADIS library. This
function can be used by individual drivers to allow raw register access via
debugfs.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Lars-Peter Clausen 2012-11-20 13:36:00 +00:00 committed by Jonathan Cameron
parent 709ab36e95
commit 78026a6fde
2 changed files with 34 additions and 0 deletions
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23
drivers/iio/imu/adis.c
View File

@ -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

11
include/linux/iio/imu/adis.h
View File

@ -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