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-rw-r--r--drivers/gpu/drm/drm_fb_helper.c23
-rw-r--r--include/drm/drm_fb_helper.h4
2 files changed, 19 insertions, 8 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 59d6b9bf204b..6764dce44e84 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1398,7 +1398,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper)
struct drm_mode_set *modeset;
bool *enabled;
int width, height;
- int i, ret;
+ int i;
DRM_DEBUG_KMS("\n");
@@ -1419,16 +1419,23 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper)
drm_enable_connectors(fb_helper, enabled);
- ret = drm_target_cloned(fb_helper, modes, enabled, width, height);
- if (!ret) {
- ret = drm_target_preferred(fb_helper, modes, enabled, width, height);
- if (!ret)
+ if (!(fb_helper->funcs->initial_config &&
+ fb_helper->funcs->initial_config(fb_helper, crtcs, modes,
+ enabled, width, height))) {
+ memset(modes, 0, dev->mode_config.num_connector*sizeof(modes[0]));
+ memset(crtcs, 0, dev->mode_config.num_connector*sizeof(crtcs[0]));
+
+ if (!drm_target_cloned(fb_helper,
+ modes, enabled, width, height) &&
+ !drm_target_preferred(fb_helper,
+ modes, enabled, width, height))
DRM_ERROR("Unable to find initial modes\n");
- }
- DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height);
+ DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n",
+ width, height);
- drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height);
+ drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height);
+ }
/* need to set the modesets up here for use later */
/* fill out the connector<->crtc mappings into the modesets */
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index c09511625a11..f97a8ef1d728 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -68,6 +68,10 @@ struct drm_fb_helper_funcs {
int (*fb_probe)(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes);
+ bool (*initial_config)(struct drm_fb_helper *fb_helper,
+ struct drm_fb_helper_crtc **crtcs,
+ struct drm_display_mode **modes,
+ bool *enabled, int width, int height);
};
struct drm_fb_helper_connector {