drm/exynos: fix no hdmi output

The hdmi outputs black screen only even though under the hood Xorg and
framebuffer console  are fine : devices found and initialized, but
not a pixel out.

Commit 93bca243ec96 ("drm/exynos: remove struct exynos_drm_manager")
changed the call order of mixer_initialize with regards to
 exynos_drm_crtc_create.

This changes breaks hdmi out on Odroid U2 (linux-next with added
 Marek Szyprowski v4 hdmi patchset from linux-samsung-soc ML).

Restore the previous call ordering get hdmi to ouput proper pixels:
ie call mixer_initialize first then exynos_drm_crtc_create.

Fixes: 93bca243ec96 ("drm/exynos: remove struct exynos_drm_manager")
Signed-off-by: Alban Browaeys <prahal@yahoo.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 75b47da6c66c..0aa6cf447e9f 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1254,18 +1254,19 @@ static int mixer_bind(struct device *dev, struct device *manager, void *data)
         struct drm_device *drm_dev = data;
         int ret;
 
+        ret = mixer_initialize(ctx, drm_dev);
+        if (ret)
+                return ret;
+
         ctx->crtc = exynos_drm_crtc_create(drm_dev, ctx->pipe,
                                      EXYNOS_DISPLAY_TYPE_HDMI,
                                      &mixer_crtc_ops, ctx);
         if (IS_ERR(ctx->crtc)) {
+                mixer_ctx_remove(ctx);
                 ret = PTR_ERR(ctx->crtc);
                 goto free_ctx;
         }
 
-        ret = mixer_initialize(ctx, drm_dev);
-        if (ret)
-                goto free_ctx;
-
         return 0;
 
 free_ctx: