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Commit 3cf70daf authored by Gerd Hoffmann's avatar Gerd Hoffmann Committed by Dave Airlie
Browse files

drm: add drm_set_preferred_mode 



New helper function to set the preferred video mode.  Can be called
after drm_add_modes_noedid if you don't want the largest supported
video mode be used by default.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 23c453a4

drivers/gpu/drm/drm_edid.c

+13 −0
Original line number Diff line number Diff line
@@ -3482,6 +3482,19 @@ int drm_add_modes_noedid(struct drm_connector *connector, 
}

EXPORT_SYMBOL(drm_add_modes_noedid);



void drm_set_preferred_mode(struct drm_connector *connector,

			   int hpref, int vpref)

{

	struct drm_display_mode *mode;



	list_for_each_entry(mode, &connector->probed_modes, head) {

		if (drm_mode_width(mode)  == hpref &&

		    drm_mode_height(mode) == vpref)

			mode->type |= DRM_MODE_TYPE_PREFERRED;

	}

}

EXPORT_SYMBOL(drm_set_preferred_mode);



/**

 * drm_hdmi_avi_infoframe_from_display_mode() - fill an HDMI AVI infoframe with

 *                                              data from a DRM display mode

include/drm/drm_crtc.h

+2 −0
Original line number Diff line number Diff line
@@ -1118,6 +1118,8 @@ extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev, 
				int GTF_2C, int GTF_K, int GTF_2J);

extern int drm_add_modes_noedid(struct drm_connector *connector,

				int hdisplay, int vdisplay);

extern void drm_set_preferred_mode(struct drm_connector *connector,

				   int hpref, int vpref);



extern int drm_edid_header_is_valid(const u8 *raw_edid);

extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);