Commit 8c4ebd0d authored Dec 11, 2019 by Manasi Navare

drm: Handle connector tile support only for modes that match tile size



DRM Fb driver expects multiple CRTCs if it sees connector->has_tile
is set, but we need to handle tile support and look for multiple CRTCs
only for the modes that match the tile size. The other modes should
be able to be displayed without tile support or uisng single CRTC.

This patch adds the check to match the tile size with requested mode
to handle the tile support.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191211212433.18185-1-manasi.d.navare@intel.com

parent 88f7df94

drivers/gpu/drm/drm_fb_helper.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1576,7 +1576,9 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
		for (j = 0; j < mode_set->num_connectors; j++) {
		struct drm_connector *connector = mode_set->connectors[j];

		if (connector->has_tile) {
		if (connector->has_tile &&
		desired_mode->hdisplay == connector->tile_h_size &&
		desired_mode->vdisplay == connector->tile_v_size) {
		lasth = (connector->tile_h_loc == (connector->num_h_tile - 1));
		lastv = (connector->tile_v_loc == (connector->num_v_tile - 1));
		/* cloning to multiple tiles is just crazy-talk, so: */

Admin message