[PATCH v3 1/5] Revert "drm/rockchip: Use drm_atomic_helper_commit_tail_rpm"

[Ezequiel Garcia <ezequiel@collabora.com>]

This reverts commit c87fb38df19da3362a0e20df1aad852100995ead,
which conflicts with adding driver-specific behavior in
atomic_commit_tail().

No functional changes expected on this commit, but just preparation
for the upcoming gamma LUT support.

Cc: Sean Paul <sean@poorly.run>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
Changes from v2:
* New patch.
---
 drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
index ca01234c037c..dba352ec0ee3 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -105,8 +105,27 @@ rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 	return ERR_PTR(ret);
 }
 
+static void
+rockchip_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state)
+{
+	struct drm_device *dev = old_state->dev;
+
+	drm_atomic_helper_commit_modeset_disables(dev, old_state);
+
+	drm_atomic_helper_commit_modeset_enables(dev, old_state);
+
+	drm_atomic_helper_commit_planes(dev, old_state,
+					DRM_PLANE_COMMIT_ACTIVE_ONLY);
+
+	drm_atomic_helper_commit_hw_done(old_state);
+
+	drm_atomic_helper_wait_for_vblanks(dev, old_state);
+
+	drm_atomic_helper_cleanup_planes(dev, old_state);
+}
+
 static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
-	.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
+	.atomic_commit_tail = rockchip_atomic_helper_commit_tail_rpm,
 };
 
 static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
-- 
2.22.0