tools:iio:iio_utils: add missing documentation (5dc65d79) · Commits · e / devices / android_kernel_fairphone_FP3

tools/iio/iio_utils.c

+79 −6

Original line number	Diff line number	Diff line
		@@ -29,6 +29,8 @@ static char * const iio_direction[] = {
		* iioutils_break_up_name() - extract generic name from full channel name
		* @full_name: the full channel name
		* @generic_name: the output generic channel name
		*
		* Returns 0 on success, or a negative error code if string extraction failed.
		**/
		int iioutils_break_up_name(const char *full_name,
		char **generic_name)
		@@ -76,11 +78,15 @@ int iioutils_break_up_name(const char *full_name,
		* iioutils_get_type() - find and process _type attribute data
		* @is_signed: output whether channel is signed
		* @bytes: output how many bytes the channel storage occupies
		* @bits_used: output number of valid bits of data
		* @shift: output amount of bits to shift right data before applying bit mask
		* @mask: output a bit mask for the raw data
		* @be: big endian
		* @device_dir: the iio device directory
		* @be: output if data in big endian
		* @device_dir: the IIO device directory
		* @name: the channel name
		* @generic_name: the channel type name
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int iioutils_get_type(unsigned *is_signed,
		unsigned *bytes,
		@@ -200,6 +206,16 @@ int iioutils_get_type(unsigned *is_signed,
		return ret;
		}

		/**
		* iioutils_get_param_float() - read a float value from a channel parameter
		* @output: output the float value
		* @param_name: the parameter name to read
		* @device_dir: the IIO device directory in sysfs
		* @name: the channel name
		* @generic_name: the channel type name
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int iioutils_get_param_float(float *output,
		const char *param_name,
		const char *device_dir,
		@@ -266,8 +282,9 @@ int iioutils_get_param_float(float *output,
		}

		/**
		* bsort_channel_array_by_index() - reorder so that the array is in index order
		*
		* bsort_channel_array_by_index() - sort the array in index order
		* @ci_array: the iio_channel_info array to be sorted
		* @cnt: the amount of array elements
		**/

		void bsort_channel_array_by_index(struct iio_channel_info **ci_array,
		@@ -289,7 +306,10 @@ void bsort_channel_array_by_index(struct iio_channel_info **ci_array,
		/**
		* build_channel_array() - function to figure out what channels are present
		* @device_dir: the IIO device directory in sysfs
		* @
		* @ci_array: output the resulting array of iio_channel_info
		* @counter: output the amount of array elements
		*
		* Returns 0 on success, otherwise a negative error code.
		**/
		int build_channel_array(const char *device_dir,
		struct iio_channel_info **ci_array,
		@@ -525,8 +545,10 @@ int calc_digits(int num)
		/**
		* find_type_by_name() - function to match top level types by name
		* @name: top level type instance name
		* @type: the type of top level instance being sort
		* @type: the type of top level instance being searched
		*
		* Returns the device number of a matched IIO device on success, otherwise a
		* negative error code.
		* Typical types this is used for are device and trigger.
		**/
		int find_type_by_name(const char name, const char type)
		@@ -684,11 +706,28 @@ static int _write_sysfs_int(char filename, char basedir, int val, int verify)
		return ret;
		}

		/**
		* write_sysfs_int() - write an integer value to a sysfs file
		* @filename: name of the file to write to
		* @basedir: the sysfs directory in which the file is to be found
		* @val: integer value to write to file
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int write_sysfs_int(char filename, char basedir, int val)
		{
		return _write_sysfs_int(filename, basedir, val, 0);
		}

		/**
		* write_sysfs_int_and_verify() - write an integer value to a sysfs file
		* and verify
		* @filename: name of the file to write to
		* @basedir: the sysfs directory in which the file is to be found
		* @val: integer value to write to file
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int write_sysfs_int_and_verify(char filename, char basedir, int val)
		{
		return _write_sysfs_int(filename, basedir, val, 1);
		@@ -770,17 +809,35 @@ static int _write_sysfs_string(char filename, char basedir, char *val,
		* @filename: name of file to write to
		* @basedir: the sysfs directory in which the file is to be found
		* @val: the string to write
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int write_sysfs_string_and_verify(char filename, char basedir, char *val)
		{
		return _write_sysfs_string(filename, basedir, val, 1);
		}

		/**
		* write_sysfs_string() - write string to a sysfs file
		* @filename: name of file to write to
		* @basedir: the sysfs directory in which the file is to be found
		* @val: the string to write
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int write_sysfs_string(char filename, char basedir, char *val)
		{
		return _write_sysfs_string(filename, basedir, val, 0);
		}

		/**
		* read_sysfs_posint() - read an integer value from file
		* @filename: name of file to read from
		* @basedir: the sysfs directory in which the file is to be found
		*
		* Returns the read integer value >= 0 on success, otherwise a negative error
		* code.
		**/
		int read_sysfs_posint(char filename, char basedir)
		{
		int ret;
		@@ -817,6 +874,14 @@ int read_sysfs_posint(char filename, char basedir)
		return ret;
		}

		/**
		* read_sysfs_float() - read a float value from file
		* @filename: name of file to read from
		* @basedir: the sysfs directory in which the file is to be found
		* @val: output the read float value
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int read_sysfs_float(char filename, char basedir, float *val)
		{
		int ret = 0;
		@@ -853,6 +918,14 @@ int read_sysfs_float(char filename, char basedir, float *val)
		return ret;
		}

		/**
		* read_sysfs_string() - read a string from file
		* @filename: name of file to read from
		* @basedir: the sysfs directory in which the file is to be found
		* @str: output the read string
		*
		* Returns a value >= 0 on success, otherwise a negative error code.
		**/
		int read_sysfs_string(const char filename, const char basedir, char *str)
		{
		int ret = 0;

tools/iio/iio_utils.h

+4 −1

Original line number	Diff line number	Diff line
		@@ -28,9 +28,12 @@ extern const char *iio_dir;
		* @offset: offset to be applied for conversion to si units
		* @index: the channel index in the buffer output
		* @bytes: number of bytes occupied in buffer output
		* @bits_used: number of valid bits of data
		* @shift: amount of bits to shift right data before applying bit mask
		* @mask: a bit mask for the raw output
		* @be: flag if data is big endian
		* @is_signed: is the raw value stored signed
		* @enabled: is this channel enabled
		* @location: data offset for this channel inside the buffer (in bytes)
		**/
		struct iio_channel_info {
		char *name;