[PATCH 08/17] drm/imx: Convert to using __drm_atomic_helper_crtc_reset() for reset.

[Maarten Lankhorst]

Convert imx to using __drm_atomic_helper_crtc_reset(), instead of
writing its own version. Instead of open coding
destroy_state(), call it directly for freeing the old state.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Philipp Zabel <p.zabel at pengutronix.de>
---
 drivers/gpu/drm/imx/ipuv3-crtc.c | 30 ++++++++++--------------------
 1 file changed, 10 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index ec3602ebbc1c..54a32c6f2407 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -101,26 +101,6 @@ static void ipu_crtc_atomic_disable(struct drm_crtc *crtc,
 	drm_crtc_vblank_off(crtc);
 }
 
-static void imx_drm_crtc_reset(struct drm_crtc *crtc)
-{
-	struct imx_crtc_state *state;
-
-	if (crtc->state) {
-		if (crtc->state->mode_blob)
-			drm_property_blob_put(crtc->state->mode_blob);
-
-		state = to_imx_crtc_state(crtc->state);
-		memset(state, 0, sizeof(*state));
-	} else {
-		state = kzalloc(sizeof(*state), GFP_KERNEL);
-		if (!state)
-			return;
-		crtc->state = &state->base;
-	}
-
-	state->base.crtc = crtc;
-}
-
 static struct drm_crtc_state *imx_drm_crtc_duplicate_state(struct drm_crtc *crtc)
 {
 	struct imx_crtc_state *state;
@@ -144,6 +124,16 @@ static void imx_drm_crtc_destroy_state(struct drm_crtc *crtc,
 	kfree(to_imx_crtc_state(state));
 }
 
+static void imx_drm_crtc_reset(struct drm_crtc *crtc)
+{
+	struct imx_crtc_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
+
+	if (crtc->state)
+		imx_drm_crtc_destroy_state(crtc, crtc->state);
+
+	__drm_atomic_helper_crtc_reset(crtc, &state->base);
+}
+
 static int ipu_enable_vblank(struct drm_crtc *crtc)
 {
 	struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
-- 
2.20.1