[PATCH 62/70] drm/rockchip: vop2: Convert to atomic_create_state

[Maxime Ripard]

The rockchip vop2 crtc implementation provides a custom reset hook.
However, this hook only allocates the state, initializes it with
__drm_atomic_helper_crtc_reset(), and frees the previous state. It
does not perform any hardware reset.

Since this is exactly what the atomic_create_state hook is meant to
do, minus the old state cleanup which the caller handles, convert the
implementation to use atomic_create_state with
__drm_atomic_helper_crtc_state_init() instead.

Signed-off-by: Maxime Ripard <mripard at kernel.org>
---
Cc: "Heiko Stübner" <heiko at sntech.de>
Cc: Andy Yan <andy.yan at rock-chips.com>
Cc: Sandy Huang <hjc at rock-chips.com>
Cc: linux-rockchip at lists.infradead.org
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index 4cce3e336f5b..b2f3a579bbe5 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -2298,28 +2298,28 @@ static void vop2_crtc_destroy_state(struct drm_crtc *crtc,
 
 	__drm_atomic_helper_crtc_destroy_state(&vcstate->base);
 	kfree(vcstate);
 }
 
-static void vop2_crtc_reset(struct drm_crtc *crtc)
+static struct drm_crtc_state *vop2_crtc_create_state(struct drm_crtc *crtc)
 {
-	struct rockchip_crtc_state *vcstate = kzalloc_obj(*vcstate);
+	struct rockchip_crtc_state *vcstate;
 
-	if (crtc->state)
-		vop2_crtc_destroy_state(crtc, crtc->state);
+	vcstate = kzalloc_obj(*vcstate);
+	if (!vcstate)
+		return ERR_PTR(-ENOMEM);
 
-	if (vcstate)
-		__drm_atomic_helper_crtc_reset(crtc, &vcstate->base);
-	else
-		__drm_atomic_helper_crtc_reset(crtc, NULL);
+	__drm_atomic_helper_crtc_state_init(&vcstate->base, crtc);
+
+	return &vcstate->base;
 }
 
 static const struct drm_crtc_funcs vop2_crtc_funcs = {
 	.set_config = drm_atomic_helper_set_config,
 	.page_flip = drm_atomic_helper_page_flip,
 	.destroy = drm_crtc_cleanup,
-	.reset = vop2_crtc_reset,
+	.atomic_create_state = vop2_crtc_create_state,
 	.atomic_duplicate_state = vop2_crtc_duplicate_state,
 	.atomic_destroy_state = vop2_crtc_destroy_state,
 	.enable_vblank = vop2_crtc_enable_vblank,
 	.disable_vblank = vop2_crtc_disable_vblank,
 	.late_register = vop2_crtc_late_register,

-- 
2.55.0