Commit 99322577 authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

OMAPDSS: DSI: get line buffer size at probe 



To find out the DSI line buffer size we need to read HW registers. To
make it possible to do DSI configuration calculations without HW powered
up, store the line buffer size at DSI driver's probe.

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 777f05cc

drivers/video/omap2/dss/dsi.c

+5 −3
Original line number Original line Diff line number Diff line
@@ -336,6 +336,7 @@ struct dsi_data { 
	unsigned long lpdiv_max;

	unsigned long lpdiv_max;





	unsigned num_lanes_supported;

	unsigned num_lanes_supported;

	unsigned line_buffer_size;





	struct dsi_lane_config lanes[DSI_MAX_NR_LANES];

	struct dsi_lane_config lanes[DSI_MAX_NR_LANES];

	unsigned num_lanes_used;

	unsigned num_lanes_used;
@@ -3791,13 +3792,12 @@ static void dsi_config_vp_num_line_buffers(struct platform_device *dsidev) 




	if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {

	if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {

		int bpp = dsi_get_pixel_size(dsi->pix_fmt);

		int bpp = dsi_get_pixel_size(dsi->pix_fmt);

		unsigned line_buf_size = dsi_get_line_buf_size(dsidev);

		struct omap_video_timings *timings = &dsi->timings;

		struct omap_video_timings *timings = &dsi->timings;

		/*

		/*

		 * Don't use line buffers if width is greater than the video

		 * Don't use line buffers if width is greater than the video

		 * port's line buffer size

		 * port's line buffer size

		 */

		 */

		if (line_buf_size <= timings->x_res * bpp / 8)

		if (dsi->line_buffer_size <= timings->x_res * bpp / 8)

			num_line_buffers = 0;

			num_line_buffers = 0;

		else

		else

			num_line_buffers = 2;

			num_line_buffers = 2;
@@ -4447,7 +4447,7 @@ static void dsi_update_screen_dispc(struct platform_device *dsidev) 
	u32 l;

	u32 l;

	int r;

	int r;

	const unsigned channel = dsi->update_channel;

	const unsigned channel = dsi->update_channel;

	const unsigned line_buf_size = dsi_get_line_buf_size(dsidev);

	const unsigned line_buf_size = dsi->line_buffer_size;

	u16 w = dsi->timings.x_res;

	u16 w = dsi->timings.x_res;

	u16 h = dsi->timings.y_res;

	u16 h = dsi->timings.y_res;
@@ -5293,6 +5293,8 @@ static int __init omap_dsihw_probe(struct platform_device *dsidev) 
	else

	else

		dsi->num_lanes_supported = 3;

		dsi->num_lanes_supported = 3;





	dsi->line_buffer_size = dsi_get_line_buf_size(dsidev);



	dsi_init_output(dsidev);

	dsi_init_output(dsidev);





	dsi_probe_pdata(dsidev);

	dsi_probe_pdata(dsidev);