[PATCH v5 1/4] drm/amdgpu: Switch private_obj initialization to atomic_create_state

[Maxime Ripard <mripard@kernel.org>]

The amdgpu driver relies on a drm_private_obj, that is initialized by
allocating and initializing a state, and then passing it to
drm_private_obj_init.

Since we're gradually moving away from that pattern to the more
established one relying on a atomic_create_state implementation, let's
migrate this instance to the new pattern.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

---

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Rodrigo Siqueira <siqueira@igalia.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: amd-gfx@lists.freedesktop.org
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 52 ++++++++++++-----------
 1 file changed, 28 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index a8e4e3ab5e40276b3c723297ca6520688079e0a7..98ed54afb02864342bb2c04782d05c5fb6e38672 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4912,18 +4912,41 @@ static void dm_atomic_destroy_state(struct drm_private_obj *obj,
 		dc_state_release(dm_state->context);
 
 	kfree(dm_state);
 }
 
+static struct drm_private_state *
+dm_atomic_create_state(struct drm_private_obj *obj)
+{
+	struct amdgpu_device *adev = drm_to_adev(obj->dev);
+	struct dm_atomic_state *dm_state;
+	struct dc_state *context;
+
+	dm_state = kzalloc_obj(*dm_state);
+	if (!dm_state)
+		return ERR_PTR(-ENOMEM);
+
+	context = dc_state_create_current_copy(adev->dm.dc);
+	if (!context) {
+		kfree(dm_state);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	__drm_atomic_helper_private_obj_create_state(obj, &dm_state->base);
+	dm_state->context = context;
+
+	return &dm_state->base;
+}
+
 static struct drm_private_state_funcs dm_atomic_state_funcs = {
+	.atomic_create_state = dm_atomic_create_state,
 	.atomic_duplicate_state = dm_atomic_duplicate_state,
 	.atomic_destroy_state = dm_atomic_destroy_state,
 };
 
 static int amdgpu_dm_mode_config_init(struct amdgpu_device *adev)
 {
-	struct dm_atomic_state *state;
 	int r;
 
 	adev->mode_info.mode_config_initialized = true;
 
 	adev_to_drm(adev)->mode_config.funcs = (void *)&amdgpu_dm_mode_funcs;
@@ -4939,46 +4962,27 @@ static int amdgpu_dm_mode_config_init(struct amdgpu_device *adev)
 	else
 		adev_to_drm(adev)->mode_config.prefer_shadow = 1;
 	/* indicates support for immediate flip */
 	adev_to_drm(adev)->mode_config.async_page_flip = true;
 
-	state = kzalloc_obj(*state);
-	if (!state)
-		return -ENOMEM;
-
-	state->context = dc_state_create_current_copy(adev->dm.dc);
-	if (!state->context) {
-		kfree(state);
-		return -ENOMEM;
-	}
-
 	drm_atomic_private_obj_init(adev_to_drm(adev),
 				    &adev->dm.atomic_obj,
-				    &state->base,
+				    NULL,
 				    &dm_atomic_state_funcs);
 
 	r = amdgpu_display_modeset_create_props(adev);
-	if (r) {
-		dc_state_release(state->context);
-		kfree(state);
+	if (r)
 		return r;
-	}
 
 #ifdef AMD_PRIVATE_COLOR
-	if (amdgpu_dm_create_color_properties(adev)) {
-		dc_state_release(state->context);
-		kfree(state);
+	if (amdgpu_dm_create_color_properties(adev))
 		return -ENOMEM;
-	}
 #endif
 
 	r = amdgpu_dm_audio_init(adev);
-	if (r) {
-		dc_state_release(state->context);
-		kfree(state);
+	if (r)
 		return r;
-	}
 
 	return 0;
 }
 
 #define AMDGPU_DM_DEFAULT_MIN_BACKLIGHT 12

-- 
2.52.0