@brief Reserve a single line, set the direction to output. @param line GPIO line object. @param consumer Name of the consumer. @param default_val Initial line value. @return 0 if the line was properly reserved, -1 on failure.
See Implementation
@brief Reserve a single line, set the direction to output. @param line GPIO line object. @param consumer Name of the consumer. @param default_val Initial line value. @return 0 if the line was properly reserved, -1 on failure.