Commit 6fcd485b authored by Tomi Valkeinen's avatar Tomi Valkeinen
Browse files

OMAPDSS: add videomode conversion support 



Add helper functions to convert between omapdss specific video timings
and the common videomode.

Eventually omapdss will be changed to use only the common video timings,
and these helper functions will make the transition easier.

Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 7e436bb2

drivers/video/omap2/dss/Kconfig

+1 −0
Original line number Diff line number Diff line 
menuconfig OMAP2_DSS

        tristate "OMAP2+ Display Subsystem support"

	select VIDEOMODE_HELPERS

        help

	  OMAP2+ Display Subsystem support.

drivers/video/omap2/dss/display.c

+69 −0
Original line number Diff line number Diff line
@@ -219,3 +219,72 @@ void omap_dss_stop_device(struct omap_dss_device *dssdev) 
}

EXPORT_SYMBOL(omap_dss_stop_device);



void videomode_to_omap_video_timings(const struct videomode *vm,

		struct omap_video_timings *ovt)

{

	memset(ovt, 0, sizeof(*ovt));



	ovt->pixel_clock = vm->pixelclock / 1000;

	ovt->x_res = vm->hactive;

	ovt->hbp = vm->hback_porch;

	ovt->hfp = vm->hfront_porch;

	ovt->hsw = vm->hsync_len;

	ovt->y_res = vm->vactive;

	ovt->vbp = vm->vback_porch;

	ovt->vfp = vm->vfront_porch;

	ovt->vsw = vm->vsync_len;



	ovt->vsync_level = vm->flags & DISPLAY_FLAGS_VSYNC_HIGH ?

		OMAPDSS_SIG_ACTIVE_HIGH :

		OMAPDSS_SIG_ACTIVE_LOW;

	ovt->hsync_level = vm->flags & DISPLAY_FLAGS_HSYNC_HIGH ?

		OMAPDSS_SIG_ACTIVE_HIGH :

		OMAPDSS_SIG_ACTIVE_LOW;

	ovt->de_level = vm->flags & DISPLAY_FLAGS_DE_HIGH ?

		OMAPDSS_SIG_ACTIVE_HIGH :

		OMAPDSS_SIG_ACTIVE_HIGH;

	ovt->data_pclk_edge = vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE ?

		OMAPDSS_DRIVE_SIG_RISING_EDGE :

		OMAPDSS_DRIVE_SIG_FALLING_EDGE;



	ovt->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES;

}

EXPORT_SYMBOL(videomode_to_omap_video_timings);



void omap_video_timings_to_videomode(const struct omap_video_timings *ovt,

		struct videomode *vm)

{

	memset(vm, 0, sizeof(*vm));



	vm->pixelclock = ovt->pixel_clock * 1000;



	vm->hactive = ovt->x_res;

	vm->hback_porch = ovt->hbp;

	vm->hfront_porch = ovt->hfp;

	vm->hsync_len = ovt->hsw;

	vm->vactive = ovt->y_res;

	vm->vback_porch = ovt->vbp;

	vm->vfront_porch = ovt->vfp;

	vm->vsync_len = ovt->vsw;



	if (ovt->hsync_level == OMAPDSS_SIG_ACTIVE_HIGH)

		vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH;

	else

		vm->flags |= DISPLAY_FLAGS_HSYNC_LOW;



	if (ovt->vsync_level == OMAPDSS_SIG_ACTIVE_HIGH)

		vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH;

	else

		vm->flags |= DISPLAY_FLAGS_VSYNC_LOW;



	if (ovt->de_level == OMAPDSS_SIG_ACTIVE_HIGH)

		vm->flags |= DISPLAY_FLAGS_DE_HIGH;

	else

		vm->flags |= DISPLAY_FLAGS_DE_LOW;



	if (ovt->data_pclk_edge == OMAPDSS_DRIVE_SIG_RISING_EDGE)

		vm->flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;

	else

		vm->flags |= DISPLAY_FLAGS_PIXDATA_NEGEDGE;

}

EXPORT_SYMBOL(omap_video_timings_to_videomode);

include/video/omapdss.h

+7 −0
Original line number Diff line number Diff line
@@ -23,6 +23,8 @@ 
#include <linux/device.h>

#include <linux/interrupt.h>



#include <video/videomode.h>



#define DISPC_IRQ_FRAMEDONE		(1 << 0)

#define DISPC_IRQ_VSYNC			(1 << 1)

#define DISPC_IRQ_EVSYNC_EVEN		(1 << 2)
@@ -768,6 +770,11 @@ const char *omapdss_get_default_display_name(void); 
int omap_dss_start_device(struct omap_dss_device *dssdev);

void omap_dss_stop_device(struct omap_dss_device *dssdev);



void videomode_to_omap_video_timings(const struct videomode *vm,

		struct omap_video_timings *ovt);

void omap_video_timings_to_videomode(const struct omap_video_timings *ovt,

		struct videomode *vm);



int dss_feat_get_num_mgrs(void);

int dss_feat_get_num_ovls(void);

enum omap_display_type dss_feat_get_supported_displays(enum omap_channel channel);

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