84  * to read in a certain direction.
87  * @direction: Direction of the reading
90  * As the returned count is the number of bytes between two consecutive blocks in a direction,
95 static int get_block_step_bytes(struct drm_framebuffer *fb, enum pixel_read_direction direction,  in get_block_step_bytes()  argument
98 	switch (direction) {  in get_block_step_bytes()
208  * They read a line starting at the point @x_start,@y_start following the @direction. The result
219 			       enum pixel_read_direction direction, int count,  in ARGB8888_read_line()  argument
227 	int step = get_block_step_bytes(plane->frame_info->fb, direction, 0);  in ARGB8888_read_line()
238 			       enum pixel_read_direction direction, int count,  in XRGB8888_read_line()  argument
246 	int step = get_block_step_bytes(plane->frame_info->fb, direction, 0);  in XRGB8888_read_line()
257 			       enum pixel_read_direction direction, int count,  in ABGR8888_read_line()  argument
265 	int step = get_block_step_bytes(plane->frame_info->fb, direction, 0);  in ABGR8888_read_line()
277 				   int y_start, enum pixel_read_direction direction, int count,  in ARGB16161616_read_line()  argument
285 	int step = get_block_step_bytes(plane->frame_info->fb, direction, 0);  in ARGB16161616_read_line()
296 				   int y_start, enum pixel_read_direction direction, int count,  in XRGB16161616_read_line()  argument
304 	int step = get_block_step_bytes(plane->frame_info->fb, direction, 0);  in XRGB16161616_read_line()
315 			     int y_start, enum pixel_read_direction direction, int count,  in RGB565_read_line()  argument
323 	int step = get_block_step_bytes(plane->frame_info->fb, direction, 0);  in RGB565_read_line()