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

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
......@@ -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
......
......@@ -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);
......
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