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 --- drivers/gpu/drm/omapdrm/omap_connector.c | 2 -- drivers/gpu/drm/omapdrm/omap_crtc.c | 28 +++++++++++++++++++++++++--- 2 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c index 60b438431355..c562409f2568 100644 --- a/drivers/gpu/drm/omapdrm/omap_connector.c +++ b/drivers/gpu/drm/omapdrm/omap_connector.c @@ -160,8 +160,6 @@ 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);
/* diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c index f3fd786de598..ac5f1b6eb583 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.c +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c @@ -427,6 +427,11 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc) { struct omap_crtc *omap_crtc = to_omap_crtc(crtc); struct drm_display_mode *mode = &crtc->state->adjusted_mode; + struct omap_drm_private *priv = crtc->dev->dev_private; + const u32 flags_mask = DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_DE_LOW | + DISPLAY_FLAGS_PIXDATA_POSEDGE | DISPLAY_FLAGS_PIXDATA_NEGEDGE | + DISPLAY_FLAGS_SYNC_POSEDGE | DISPLAY_FLAGS_SYNC_NEGEDGE; + int i;
DBG("%s: set mode: %d:"%s" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", omap_crtc->name, mode->base.id, mode->name, @@ -436,9 +441,26 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc) mode->type, mode->flags);
drm_display_mode_to_videomode(mode, &omap_crtc->vm); - omap_crtc->vm.flags |= DISPLAY_FLAGS_DE_HIGH | - DISPLAY_FLAGS_PIXDATA_POSEDGE | - DISPLAY_FLAGS_SYNC_NEGEDGE; + + for (i = 0; i < priv->num_encoders; ++i) { + struct drm_encoder *encoder = priv->encoders[i]; + + if (encoder->crtc == crtc) { + struct omap_dss_device *dssdev; + + dssdev = omap_encoder_get_dssdev(encoder); + + if (dssdev) { + struct videomode vm = {0}; + + dssdev->driver->get_timings(dssdev, &vm); + + omap_crtc->vm.flags |= vm.flags & flags_mask; + } + + break; + } + } }
static int omap_crtc_atomic_check(struct drm_crtc *crtc,