disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
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@@ -314,6 +314,23 @@
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 		rockchip_drm_unregister_sub_dev(sdev);
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 }
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+static enum drm_mode_status
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+rockchip_dp_drm_encoder_mode_valid(struct drm_encoder *encoder,
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+				   const struct drm_display_mode *mode)
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+{
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+	struct rockchip_dp_device *dp = to_dp(encoder);
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+	struct videomode vm;
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+
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+	drm_display_mode_to_videomode(mode, &vm);
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+
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+	if (!vm.hfront_porch || !vm.hback_porch || !vm.vfront_porch || !vm.vback_porch) {
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+		DRM_DEV_ERROR(dp->dev, "front porch or back porch can not be 0\n");
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+		return MODE_BAD;
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+	}
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+
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+	return MODE_OK;
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+}
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+
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 static bool
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 rockchip_dp_drm_encoder_mode_fixup(struct drm_encoder *encoder,
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 				   const struct drm_display_mode *mode,
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@@ -437,6 +454,16 @@
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 	} else {
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 		s->output_if |= dp->id ? VOP_OUTPUT_IF_eDP1 : VOP_OUTPUT_IF_eDP0;
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 	}
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+
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+	if (dp->plat_data.dual_connector_split) {
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+		s->output_flags |= ROCKCHIP_OUTPUT_DUAL_CONNECTOR_SPLIT_MODE;
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+
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+		if (dp->plat_data.left_display)
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+			s->output_if_left_panel |= dp->id ?
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+						   VOP_OUTPUT_IF_eDP1 :
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+						   VOP_OUTPUT_IF_eDP0;
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+	}
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+
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 	s->output_bpc = di->bpc;
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 	s->bus_flags = di->bus_flags;
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 	s->tv_state = &conn_state->tv;
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@@ -474,6 +501,7 @@
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 }
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 static struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = {
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+	.mode_valid = rockchip_dp_drm_encoder_mode_valid,
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 	.mode_fixup = rockchip_dp_drm_encoder_mode_fixup,
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 	.mode_set = rockchip_dp_drm_encoder_mode_set,
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 	.atomic_enable = rockchip_dp_drm_encoder_enable,
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@@ -671,6 +699,7 @@
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 		dp->plat_data.right = secondary->adp;
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 		dp->plat_data.split_mode = true;
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+		secondary->plat_data.panel = dp->plat_data.panel;
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 		secondary->plat_data.left = dp->adp;
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 		secondary->plat_data.split_mode = true;
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 	}
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@@ -678,6 +707,12 @@
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 	device_property_read_u32(dev, "min-refresh-rate", &dp->min_refresh_rate);
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 	device_property_read_u32(dev, "max-refresh-rate", &dp->max_refresh_rate);
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+	if (dp->data->split_mode && device_property_read_bool(dev, "dual-connector-split")) {
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+		dp->plat_data.dual_connector_split = true;
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+		if (device_property_read_bool(dev, "left-display"))
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+			dp->plat_data.left_display = true;
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+	}
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+
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 	ret = component_add(dev, &rockchip_dp_component_ops);
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 	if (ret)
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 		goto err_dp_remove;