drm/omap: fix display SYNC/DE flags

At the moment VSYNC/HSYNC/DE high/low flags set by the panel/encoder
drivers get lost when the videotimings are translated to DRM's
videomode, as DRM's mode does not have corresponding flags.

DRM has bus-flags for this purpose, and while it lacks a few flags at
the moment, it should be used here. However, until we rewrite omapdrm's
device model, using bus-flags is rather difficult.

As a short term fix, this patch makes sure that every time the videomode
is set in omap_crtc_mode_set_nofb(), the driver asks for the SYNC/DE
flags from the panel/encoder drivers, and thus we get the correct flags
into use.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index 50d2b641c28b..c24b6b783e9a 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -146,8 +146,6 @@ static int omap_connector_mode_valid(struct drm_connector *connector,
         int r, ret = MODE_BAD;
 
         drm_display_mode_to_videomode(mode, &vm);
-        vm.flags |= DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE |
-                    DISPLAY_FLAGS_SYNC_NEGEDGE;
         mode->vrefresh = drm_mode_vrefresh(mode);
 
         /*
@@ -162,6 +160,12 @@ static int omap_connector_mode_valid(struct drm_connector *connector,
 
                 dssdrv->get_timings(dssdev, &t);
 
+                /*
+                 * Ignore the flags, as we don't get them from
+                 * drm_display_mode_to_videomode.
+                 */
+                t.flags = 0;
+
                 if (memcmp(&vm, &t, sizeof(vm)))
                         r = -EINVAL;
                 else