Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
iio: backend: add API for interface get
Add backend support for obtaining the interface type used.
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250214131955.31973-2-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
authored by
Antoniu Miclaus
and committed by
Jonathan Cameron
4018ab42
ac856912
+35
+24
drivers/iio/industrialio-backend.c
+24
drivers/iio/industrialio-backend.c
···
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EXPORT_SYMBOL_NS_GPL(iio_backend_ext_info_set, "IIO_BACKEND");
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/**
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* iio_backend_interface_type_get - get the interface type used.
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* @back: Backend device
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* @type: Interface type
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*
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* RETURNS:
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* 0 on success, negative error number on failure.
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*/
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int iio_backend_interface_type_get(struct iio_backend *back,
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enum iio_backend_interface_type *type)
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{
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int ret;
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ret = iio_backend_op_call(back, interface_type_get, type);
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if (ret)
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return ret;
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if (*type >= IIO_BACKEND_INTERFACE_MAX)
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return -EINVAL;
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return 0;
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}
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EXPORT_SYMBOL_NS_GPL(iio_backend_interface_type_get, "IIO_BACKEND");
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/**
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* iio_backend_extend_chan_spec - Extend an IIO channel
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* @back: Backend device
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* @chan: IIO channel
+11
include/linux/iio/backend.h
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include/linux/iio/backend.h
···
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IIO_BACKEND_SAMPLE_TRIGGER_MAX
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};
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enum iio_backend_interface_type {
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IIO_BACKEND_INTERFACE_SERIAL_LVDS,
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IIO_BACKEND_INTERFACE_SERIAL_CMOS,
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IIO_BACKEND_INTERFACE_MAX
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};
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/**
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* struct iio_backend_ops - operations structure for an iio_backend
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* @enable: Enable backend.
···
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* @extend_chan_spec: Extend an IIO channel.
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* @ext_info_set: Extended info setter.
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* @ext_info_get: Extended info getter.
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* @interface_type_get: Interface type.
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* @read_raw: Read a channel attribute from a backend device
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* @debugfs_print_chan_status: Print channel status into a buffer.
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* @debugfs_reg_access: Read or write register value of backend.
···
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const char *buf, size_t len);
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int (*ext_info_get)(struct iio_backend *back, uintptr_t private,
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const struct iio_chan_spec *chan, char *buf);
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int (*interface_type_get)(struct iio_backend *back,
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enum iio_backend_interface_type *type);
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int (*read_raw)(struct iio_backend *back,
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struct iio_chan_spec const *chan, int *val, int *val2,
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long mask);
···
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const char *buf, size_t len);
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ssize_t iio_backend_ext_info_get(struct iio_dev *indio_dev, uintptr_t private,
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const struct iio_chan_spec *chan, char *buf);
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int iio_backend_interface_type_get(struct iio_backend *back,
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enum iio_backend_interface_type *type);
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int iio_backend_read_raw(struct iio_backend *back,
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struct iio_chan_spec const *chan, int *val, int *val2,
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long mask);