drm/amd/display: Unify amdgpu_dm state variable namings.

Use dm_new_*_state and dm_old_*_state for their respective amdgpu_dm new
and old object states. Helps with readability, and enforces use of new
DRM api (choose either new, or old).
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -3890,7 +3890,7 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 				drm_atomic_get_new_crtc_state(state, crtc);
 		struct drm_framebuffer *fb = new_plane_state->fb;
 		bool pflip_needed;
-		struct dm_plane_state *dm_plane_state = to_dm_plane_state(new_plane_state);
+		struct dm_plane_state *dm_new_plane_state = to_dm_plane_state(new_plane_state);
 
 		if (plane->type == DRM_PLANE_TYPE_CURSOR) {
 			handle_cursor_update(plane, old_plane_state);
@@ -3914,9 +3914,9 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
 		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 
 		if (!pflip_needed) {
-			WARN_ON(!dm_plane_state->dc_state);
+			WARN_ON(!dm_new_plane_state->dc_state);
 
-			plane_states_constructed[planes_count] = dm_plane_state->dc_state;
+			plane_states_constructed[planes_count] = dm_new_plane_state->dc_state;
 
 			dc_stream_attach = acrtc_state->stream;
 			planes_count++;
@@ -3983,10 +3983,10 @@ int amdgpu_dm_atomic_commit(
 	 * the ISRs.
 	 */
 	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
-		struct dm_crtc_state *old_acrtc_state = to_dm_crtc_state(old_crtc_state);
+		struct dm_crtc_state *dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
 		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
 
-		if (drm_atomic_crtc_needs_modeset(new_crtc_state) && old_acrtc_state->stream)
+		if (drm_atomic_crtc_needs_modeset(new_crtc_state) && dm_old_crtc_state->stream)
 			manage_dm_interrupts(adev, acrtc, false);
 	}
 
@@ -4012,7 +4012,7 @@ void amdgpu_dm_atomic_commit_tail(
 	bool wait_for_vblank = true;
 	struct drm_connector *connector;
 	struct drm_connector_state *old_con_state, *new_con_state;
-	struct dm_crtc_state *old_acrtc_state, *new_acrtc_state;
+	struct dm_crtc_state *dm_old_crtc_state, *dm_new_crtc_state;
 
 	drm_atomic_helper_update_legacy_modeset_state(dev, state);
 
@@ -4022,8 +4022,8 @@ void amdgpu_dm_atomic_commit_tail(
 	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
 		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
 
-		new_acrtc_state = to_dm_crtc_state(new_crtc_state);
-		old_acrtc_state = to_dm_crtc_state(old_crtc_state);
+		dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
+		dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
 
 		DRM_DEBUG_DRIVER(
 			"amdgpu_crtc id:%d crtc_state_flags: enable:%d, active:%d, "
@@ -4041,11 +4041,11 @@ void amdgpu_dm_atomic_commit_tail(
 		 * aconnector as needed
 		 */
 
-		if (modeset_required(new_crtc_state, new_acrtc_state->stream, old_acrtc_state->stream)) {
+		if (modeset_required(new_crtc_state, dm_new_crtc_state->stream, dm_old_crtc_state->stream)) {
 
 			DRM_DEBUG_DRIVER("Atomic commit: SET crtc id %d: [%p]\n", acrtc->crtc_id, acrtc);
 
-			if (!new_acrtc_state->stream) {
+			if (!dm_new_crtc_state->stream) {
 				/*
 				 * this could happen because of issues with
 				 * userspace notifications delivery.
@@ -4067,8 +4067,8 @@ void amdgpu_dm_atomic_commit_tail(
 			}
 
 
-			if (old_acrtc_state->stream)
-				remove_stream(adev, acrtc, old_acrtc_state->stream);
+			if (dm_old_crtc_state->stream)
+				remove_stream(adev, acrtc, dm_old_crtc_state->stream);
 
 
 			/*
@@ -4092,8 +4092,8 @@ void amdgpu_dm_atomic_commit_tail(
 			DRM_DEBUG_DRIVER("Atomic commit: RESET. crtc id %d:[%p]\n", acrtc->crtc_id, acrtc);
 
 			/* i.e. reset mode */
-			if (old_acrtc_state->stream)
-				remove_stream(adev, acrtc, old_acrtc_state->stream);
+			if (dm_old_crtc_state->stream)
+				remove_stream(adev, acrtc, dm_old_crtc_state->stream);
 		}
 	} /* for_each_crtc_in_state() */
 
@@ -4107,9 +4107,9 @@ void amdgpu_dm_atomic_commit_tail(
 
 			new_crtc_state = drm_atomic_get_new_crtc_state(state,
 					&new_crtcs[i]->base);
-			new_acrtc_state = to_dm_crtc_state(new_crtc_state);
+			dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
 
-			new_stream = new_acrtc_state->stream;
+			new_stream = dm_new_crtc_state->stream;
 			aconnector = amdgpu_dm_find_first_crct_matching_connector(
 					state,
 					&new_crtcs[i]->base);
@@ -4131,14 +4131,14 @@ void amdgpu_dm_atomic_commit_tail(
 	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
 		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
 
-		new_acrtc_state = to_dm_crtc_state(new_crtc_state);
+		dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
 
-		if (new_acrtc_state->stream != NULL) {
+		if (dm_new_crtc_state->stream != NULL) {
 			const struct dc_stream_status *status =
-					dc_stream_get_status(new_acrtc_state->stream);
+					dc_stream_get_status(dm_new_crtc_state->stream);
 
 			if (!status)
-				DC_ERR("got no status for stream %p on acrtc%p\n", new_acrtc_state->stream, acrtc);
+				DC_ERR("got no status for stream %p on acrtc%p\n", dm_new_crtc_state->stream, acrtc);
 			else
 				acrtc->otg_inst = status->primary_otg_inst;
 		}
@@ -4146,9 +4146,9 @@ void amdgpu_dm_atomic_commit_tail(
 
 	/* Handle scaling and undersacn changes*/
 	for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) {
-		struct dm_connector_state *con_new_state = to_dm_connector_state(new_con_state);
-		struct dm_connector_state *con_old_state = to_dm_connector_state(old_con_state);
-		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(con_new_state->base.crtc);
+		struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state);
+		struct dm_connector_state *dm_old_con_state = to_dm_connector_state(old_con_state);
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc);
 		struct dc_stream_status *status = NULL;
 
 		if (acrtc)
@@ -4159,19 +4159,19 @@ void amdgpu_dm_atomic_commit_tail(
 			continue;
 
 		/* Skip any thing not scale or underscan changes */
-		if (!is_scaling_state_different(con_new_state, con_old_state))
+		if (!is_scaling_state_different(dm_new_con_state, dm_old_con_state))
 			continue;
 
-		new_acrtc_state = to_dm_crtc_state(new_crtc_state);
+		dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
 
-		update_stream_scaling_settings(&con_new_state->base.crtc->mode,
-				con_new_state, (struct dc_stream_state *)new_acrtc_state->stream);
+		update_stream_scaling_settings(&dm_new_con_state->base.crtc->mode,
+				dm_new_con_state, (struct dc_stream_state *)dm_new_crtc_state->stream);
 
-		status = dc_stream_get_status(new_acrtc_state->stream);
+		status = dc_stream_get_status(dm_new_crtc_state->stream);
 		WARN_ON(!status);
 		WARN_ON(!status->plane_count);
 
-		if (!new_acrtc_state->stream)
+		if (!dm_new_crtc_state->stream)
 			continue;
 
 		/*TODO How it works with MPO ?*/
@@ -4179,7 +4179,7 @@ void amdgpu_dm_atomic_commit_tail(
 				dm->dc,
 				status->plane_states,
 				status->plane_count,
-				new_acrtc_state->stream))
+				dm_new_crtc_state->stream))
 			dm_error("%s: Failed to update stream scaling!\n", __func__);
 	}
 
@@ -4190,20 +4190,20 @@ void amdgpu_dm_atomic_commit_tail(
 		struct amdgpu_crtc *acrtc = new_crtcs[i];
 
 		new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
-		new_acrtc_state = to_dm_crtc_state(new_crtc_state);
+		dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
 
 		if (adev->dm.freesync_module)
 			mod_freesync_notify_mode_change(
-				adev->dm.freesync_module, &new_acrtc_state->stream, 1);
+				adev->dm.freesync_module, &dm_new_crtc_state->stream, 1);
 
 		manage_dm_interrupts(adev, acrtc, true);
 	}
 
 	/* update planes when needed per crtc*/
 	for_each_new_crtc_in_state(state, pcrtc, new_crtc_state, j) {
-		new_acrtc_state = to_dm_crtc_state(new_crtc_state);
+		dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
 
-		if (new_acrtc_state->stream)
+		if (dm_new_crtc_state->stream)
 			amdgpu_dm_commit_planes(state, dev, dm, pcrtc, &wait_for_vblank);
 	}
 
@@ -4377,7 +4377,7 @@ static int dm_update_crtcs_state(
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
 	int i;
-	struct dm_crtc_state *old_acrtc_state, *new_acrtc_state;
+	struct dm_crtc_state *dm_old_crtc_state, *dm_new_crtc_state;
 	struct dm_atomic_state *dm_state = to_dm_atomic_state(state);
 	struct dc_stream_state *new_stream;
 	int ret = 0;
@@ -4392,8 +4392,8 @@ static int dm_update_crtcs_state(
 
 		new_stream = NULL;
 
-		old_acrtc_state = to_dm_crtc_state(old_crtc_state);
-		new_acrtc_state = to_dm_crtc_state(new_crtc_state);
+		dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
+		dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
 		acrtc = to_amdgpu_crtc(crtc);
 
 		aconnector = amdgpu_dm_find_first_crct_matching_connector(state, crtc);
@@ -4428,8 +4428,7 @@ static int dm_update_crtcs_state(
 			}
 		}
 
-		if (dc_is_stream_unchanged(new_stream,
-				old_acrtc_state->stream)) {
+		if (dc_is_stream_unchanged(new_stream, dm_old_crtc_state->stream)) {
 
 			new_crtc_state->mode_changed = false;
 
@@ -4456,7 +4455,7 @@ static int dm_update_crtcs_state(
 		/* Remove stream for any changed/disabled CRTC */
 		if (!enable) {
 
-			if (!old_acrtc_state->stream)
+			if (!dm_old_crtc_state->stream)
 				goto next_crtc;
 
 			DRM_DEBUG_DRIVER("Disabling DRM crtc: %d\n",
@@ -4466,13 +4465,13 @@ static int dm_update_crtcs_state(
 			if (!dc_remove_stream_from_ctx(
 					dc,
 					dm_state->context,
-					old_acrtc_state->stream)) {
+					dm_old_crtc_state->stream)) {
 				ret = -EINVAL;
 				goto fail;
 			}
 
-			dc_stream_release(old_acrtc_state->stream);
-			new_acrtc_state->stream = NULL;
+			dc_stream_release(dm_old_crtc_state->stream);
+			dm_new_crtc_state->stream = NULL;
 
 			*lock_and_validation_needed = true;
 
@@ -4482,11 +4481,11 @@ static int dm_update_crtcs_state(
 				goto next_crtc;
 
 			if (modeset_required(new_crtc_state, new_stream,
-					     old_acrtc_state->stream)) {
+					     dm_old_crtc_state->stream)) {
 
-				WARN_ON(new_acrtc_state->stream);
+				WARN_ON(dm_new_crtc_state->stream);
 
-				new_acrtc_state->stream = new_stream;
+				dm_new_crtc_state->stream = new_stream;
 				dc_stream_retain(new_stream);
 
 				DRM_DEBUG_DRIVER("Enabling DRM crtc: %d\n",
@@ -4495,7 +4494,7 @@ static int dm_update_crtcs_state(
 				if (!dc_add_stream_to_ctx(
 						dc,
 						dm_state->context,
-						new_acrtc_state->stream)) {
+						dm_new_crtc_state->stream)) {
 					ret = -EINVAL;
 					goto fail;
 				}
@@ -4528,9 +4527,9 @@ static int dm_update_planes_state(
 	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
 	struct drm_plane *plane;
 	struct drm_plane_state *old_plane_state, *new_plane_state;
-	struct dm_crtc_state *new_acrtc_state, *old_acrtc_state;
+	struct dm_crtc_state *dm_new_crtc_state, *dm_old_crtc_state;
 	struct dm_atomic_state *dm_state = to_dm_atomic_state(state);
-	struct dm_plane_state *new_dm_plane_state, *old_dm_plane_state;
+	struct dm_plane_state *dm_new_plane_state, *dm_old_plane_state;
 	int i ;
 	/* TODO return page_flip_needed() function */
 	bool pflip_needed  = !state->allow_modeset;
@@ -4543,8 +4542,8 @@ static int dm_update_planes_state(
 	for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) {
 		new_plane_crtc = new_plane_state->crtc;
 		old_plane_crtc = old_plane_state->crtc;
-		new_dm_plane_state = to_dm_plane_state(new_plane_state);
-		old_dm_plane_state = to_dm_plane_state(old_plane_state);
+		dm_new_plane_state = to_dm_plane_state(new_plane_state);
+		dm_old_plane_state = to_dm_plane_state(old_plane_state);
 
 		/*TODO Implement atomic check for cursor plane */
 		if (plane->type == DRM_PLANE_TYPE_CURSOR)
@@ -4558,9 +4557,9 @@ static int dm_update_planes_state(
 
 			old_crtc_state = drm_atomic_get_old_crtc_state(
 					state, old_plane_crtc);
-			old_acrtc_state = to_dm_crtc_state(old_crtc_state);
+			dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
 
-			if (!old_acrtc_state->stream)
+			if (!dm_old_crtc_state->stream)
 				continue;
 
 			DRM_DEBUG_DRIVER("Disabling DRM plane: %d on DRM crtc %d\n",
@@ -4568,8 +4567,8 @@ static int dm_update_planes_state(
 
 			if (!dc_remove_plane_from_context(
 					dc,
-					old_acrtc_state->stream,
-					old_dm_plane_state->dc_state,
+					dm_old_crtc_state->stream,
+					dm_old_plane_state->dc_state,
 					dm_state->context)) {
 
 				ret = EINVAL;
@@ -4577,8 +4576,8 @@ static int dm_update_planes_state(
 			}
 
 
-			dc_plane_state_release(old_dm_plane_state->dc_state);
-			new_dm_plane_state->dc_state = NULL;
+			dc_plane_state_release(dm_old_plane_state->dc_state);
+			dm_new_plane_state->dc_state = NULL;
 
 			*lock_and_validation_needed = true;
 
@@ -4591,27 +4590,27 @@ static int dm_update_planes_state(
 				continue;
 
 			new_crtc_state = drm_atomic_get_new_crtc_state(state, new_plane_crtc);
-			new_acrtc_state = to_dm_crtc_state(new_crtc_state);
+			dm_new_crtc_state = to_dm_crtc_state(new_crtc_state);
 
-			if (!new_acrtc_state->stream)
+			if (!dm_new_crtc_state->stream)
 				continue;
 
 
-			WARN_ON(new_dm_plane_state->dc_state);
+			WARN_ON(dm_new_plane_state->dc_state);
 
-			new_dm_plane_state->dc_state = dc_create_plane_state(dc);
+			dm_new_plane_state->dc_state = dc_create_plane_state(dc);
 
 			DRM_DEBUG_DRIVER("Enabling DRM plane: %d on DRM crtc %d\n",
 					plane->base.id, new_plane_crtc->base.id);
 
-			if (!new_dm_plane_state->dc_state) {
+			if (!dm_new_plane_state->dc_state) {
 				ret = -EINVAL;
 				return ret;
 			}
 
 			ret = fill_plane_attributes(
 				new_plane_crtc->dev->dev_private,
-				new_dm_plane_state->dc_state,
+				dm_new_plane_state->dc_state,
 				new_plane_state,
 				new_crtc_state,
 				false);
@@ -4621,8 +4620,8 @@ static int dm_update_planes_state(
 
 			if (!dc_add_plane_to_context(
 					dc,
-					new_acrtc_state->stream,
-					new_dm_plane_state->dc_state,
+					dm_new_crtc_state->stream,
+					dm_new_plane_state->dc_state,
 					dm_state->context)) {
 
 				ret = -EINVAL;
@@ -4714,9 +4713,9 @@ int amdgpu_dm_atomic_check(struct drm_device *dev,
 	 * decide how to handle.
 	 */
 	for_each_oldnew_connector_in_state(state, connector, old_con_state, new_con_state, i) {
-		struct dm_connector_state *con_old_state = to_dm_connector_state(old_con_state);
-		struct dm_connector_state *con_new_state = to_dm_connector_state(new_con_state);
-		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(con_new_state->base.crtc);
+		struct dm_connector_state *dm_old_con_state = to_dm_connector_state(old_con_state);
+		struct dm_connector_state *dm_new_con_state = to_dm_connector_state(new_con_state);
+		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc);
 
 		/* Skip any modesets/resets */
 		if (!acrtc || drm_atomic_crtc_needs_modeset(
@@ -4724,7 +4723,7 @@ int amdgpu_dm_atomic_check(struct drm_device *dev,
 			continue;
 
 		/* Skip any thing not scale or underscan changes */
-		if (!is_scaling_state_different(con_new_state, con_old_state))
+		if (!is_scaling_state_different(dm_new_con_state, dm_old_con_state))
 			continue;
 
 		lock_and_validation_needed = true;