Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d72daa0d authored by Lothar Waßmann's avatar Lothar Waßmann Committed by Philipp Zabel
Browse files

drm: add a helper function to extract 'de-active' and 'pixelclk-active' from DT 



add a helper function to extract information about pixel clock and DE
polarity from DT for use by of_get_drm_display_mode().
While at it, convert spaces to tabs in indentation in drm_modes.h.

Signed-off-by: default avatarLothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent 29b4817d

drivers/gpu/drm/drm_modes.c

+15 −0
Original line number Diff line number Diff line
@@ -657,6 +657,21 @@ void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, 
}

EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode);



void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags)

{

	*bus_flags = 0;

	if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE)

		*bus_flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE;

	if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)

		*bus_flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE;



	if (vm->flags & DISPLAY_FLAGS_DE_LOW)

		*bus_flags |= DRM_BUS_FLAG_DE_LOW;

	if (vm->flags & DISPLAY_FLAGS_DE_HIGH)

		*bus_flags |= DRM_BUS_FLAG_DE_HIGH;

}

EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode);



#ifdef CONFIG_OF

/**

 * of_get_drm_display_mode - get a drm_display_mode from devicetree

include/drm/drm_modes.h

+2 −1
Original line number Diff line number Diff line
@@ -457,6 +457,7 @@ void drm_display_mode_from_videomode(const struct videomode *vm, 
				     struct drm_display_mode *dmode);

void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,

				   struct videomode *vm);

void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags);

int of_get_drm_display_mode(struct device_node *np,

			    struct drm_display_mode *dmode,

			    int index);