diff options
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_helper.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 1c3a8c55714..4c93b7b8560 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -42,6 +42,26 @@ static struct drm_display_mode std_modes[] = { DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, }; +static void drm_mode_validate_flag(struct drm_connector *connector, + int flags) +{ + struct drm_display_mode *mode, *t; + + if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) + return; + + list_for_each_entry_safe(mode, t, &connector->modes, head) { + if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && + !(flags & DRM_MODE_FLAG_INTERLACE)) + mode->status = MODE_NO_INTERLACE; + if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && + !(flags & DRM_MODE_FLAG_DBLSCAN)) + mode->status = MODE_NO_DBLESCAN; + } + + return; +} + /** * drm_helper_probe_connector_modes - get complete set of display modes * @dev: DRM device @@ -72,6 +92,7 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector, struct drm_connector_helper_funcs *connector_funcs = connector->helper_private; int count = 0; + int mode_flags = 0; DRM_DEBUG("%s\n", drm_get_connector_name(connector)); /* set all modes to the unverified state */ @@ -96,6 +117,13 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector, if (maxX && maxY) drm_mode_validate_size(dev, &connector->modes, maxX, maxY, 0); + + if (connector->interlace_allowed) + mode_flags |= DRM_MODE_FLAG_INTERLACE; + if (connector->doublescan_allowed) + mode_flags |= DRM_MODE_FLAG_DBLSCAN; + drm_mode_validate_flag(connector, mode_flags); + list_for_each_entry_safe(mode, t, &connector->modes, head) { if (mode->status == MODE_OK) mode->status = connector_funcs->mode_valid(connector, |