drm: sun4i: use vblank hooks in struct drm_crtc_funcs

The vblank hooks in struct drm_driver are deprecated and only meant for
legacy drivers.  For modern drivers with DRIVER_MODESET flag, the hooks
in struct drm_crtc_funcs should be used instead.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1486458995-31018-20-git-send-email-shawnguo@kernel.org

drivers/gpu/drm/sun4i/sun4i_crtc.c

@@ -104,6 +104,28 @@ static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
 	.enable		= sun4i_crtc_enable,
 };
 
+static int sun4i_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+	struct sun4i_drv *drv = scrtc->drv;
+
+	DRM_DEBUG_DRIVER("Enabling VBLANK on crtc %p\n", crtc);
+
+	sun4i_tcon_enable_vblank(drv->tcon, true);
+
+	return 0;
+}
+
+static void sun4i_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+	struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+	struct sun4i_drv *drv = scrtc->drv;
+
+	DRM_DEBUG_DRIVER("Disabling VBLANK on crtc %p\n", crtc);
+
+	sun4i_tcon_enable_vblank(drv->tcon, false);
+}
+
 static const struct drm_crtc_funcs sun4i_crtc_funcs = {
 	.atomic_destroy_state	= drm_atomic_helper_crtc_destroy_state,
 	.atomic_duplicate_state	= drm_atomic_helper_crtc_duplicate_state,
@@ -111,6 +133,8 @@ static const struct drm_crtc_funcs sun4i_crtc_funcs = {
 	.page_flip		= drm_atomic_helper_page_flip,
 	.reset			= drm_atomic_helper_crtc_reset,
 	.set_config		= drm_atomic_helper_set_config,
+	.enable_vblank		= sun4i_crtc_enable_vblank,
+	.disable_vblank		= sun4i_crtc_disable_vblank,
 };
 
 struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm)

drivers/gpu/drm/sun4i/sun4i_drv.c

@@ -24,29 +24,6 @@
 #include "sun4i_drv.h"
 #include "sun4i_framebuffer.h"
 #include "sun4i_layer.h"
-#include "sun4i_tcon.h"
-
-static int sun4i_drv_enable_vblank(struct drm_device *drm, unsigned int pipe)
-{
-	struct sun4i_drv *drv = drm->dev_private;
-	struct sun4i_tcon *tcon = drv->tcon;
-
-	DRM_DEBUG_DRIVER("Enabling VBLANK on pipe %d\n", pipe);
-
-	sun4i_tcon_enable_vblank(tcon, true);
-
-	return 0;
-}
-
-static void sun4i_drv_disable_vblank(struct drm_device *drm, unsigned int pipe)
-{
-	struct sun4i_drv *drv = drm->dev_private;
-	struct sun4i_tcon *tcon = drv->tcon;
-
-	DRM_DEBUG_DRIVER("Disabling VBLANK on pipe %d\n", pipe);
-
-	sun4i_tcon_enable_vblank(tcon, false);
-}
 
 static const struct file_operations sun4i_drv_fops = {
 	.owner		= THIS_MODULE,
@@ -90,10 +67,6 @@ static struct drm_driver sun4i_drv_driver = {
 	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
 
 	/* Frame Buffer Operations */
-
-	/* VBlank Operations */
-	.enable_vblank		= sun4i_drv_enable_vblank,
-	.disable_vblank		= sun4i_drv_disable_vblank,
 };
 
 static void sun4i_remove_framebuffers(void)