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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>
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2 changed files with 34 additions and 0 deletions
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@ -135,6 +135,29 @@ int adis_read_reg_16(struct adis *adis, unsigned int reg, uint16_t *val)
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}
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EXPORT_SYMBOL_GPL(adis_read_reg_16);
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#ifdef CONFIG_DEBUG_FS
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int adis_debugfs_reg_access(struct iio_dev *indio_dev,
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unsigned int reg, unsigned int writeval, unsigned int *readval)
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{
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struct adis *adis = iio_device_get_drvdata(indio_dev);
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if (readval) {
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uint16_t val16;
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int ret;
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ret = adis_read_reg_16(adis, reg, &val16);
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*readval = val16;
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return ret;
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} else {
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return adis_write_reg_16(adis, reg, writeval);
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}
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}
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EXPORT_SYMBOL(adis_debugfs_reg_access);
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#endif
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/**
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* adis_enable_irq() - Enable or disable data ready IRQ
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* @adis: The adis device
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@ -183,4 +183,15 @@ static inline void adis_remove_trigger(struct adis *adis)
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#endif /* CONFIG_IIO_BUFFER */
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#ifdef CONFIG_DEBUG_FS
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int adis_debugfs_reg_access(struct iio_dev *indio_dev,
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unsigned int reg, unsigned int writeval, unsigned int *readval);
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#else
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#define adis_debugfs_reg_access NULL
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#endif
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#endif
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