1 // SPDX-License-Identifier: GPL-2.0
3  * rcar_du_of.c - Legacy DT bindings compatibility
23 /* -----------------------------------------------------------------------------
39 		.compatible = "renesas,du-" #soc,			\
59 		return -ENODEV;  in rcar_du_of_apply_overlay()
62 	return of_overlay_fdt_apply(dtb->begin, dtb->end - dtb->begin,  in rcar_du_of_apply_overlay()
72 	int ret = -ENOMEM;  in rcar_du_of_add_property()
76 		return -ENOMEM;  in rcar_du_of_add_property()
78 	prop->name = kstrdup(name, GFP_KERNEL);  in rcar_du_of_add_property()
79 	if (!prop->name)  in rcar_du_of_add_property()
82 	prop->value = kmemdup(value, length, GFP_KERNEL);  in rcar_du_of_add_property()
83 	if (!prop->value)  in rcar_du_of_add_property()
88 	prop->length = length;  in rcar_du_of_add_property()
95 	kfree(prop->value);  in rcar_du_of_add_property()
96 	kfree(prop->name);  in rcar_du_of_add_property()
101 /* -----------------------------------------------------------------------------
102  * LVDS Overlays
105 RCAR_DU_OF_DTB(lvds, r8a7790);
106 RCAR_DU_OF_DTB(lvds, r8a7791);
107 RCAR_DU_OF_DTB(lvds, r8a7793);
108 RCAR_DU_OF_DTB(lvds, r8a7795);
109 RCAR_DU_OF_DTB(lvds, r8a7796);
112 	RCAR_DU_OF_OVERLAY(lvds, r8a7790),
113 	RCAR_DU_OF_OVERLAY(lvds, r8a7791),
114 	RCAR_DU_OF_OVERLAY(lvds, r8a7793),
115 	RCAR_DU_OF_OVERLAY(lvds, r8a7795),
116 	RCAR_DU_OF_OVERLAY(lvds, r8a7796),
122 static void __init rcar_du_of_lvds_patch_one(struct device_node *lvds,  in rcar_du_of_lvds_patch_one()  argument
133 	 * Set the LVDS clocks property. This can't be performed by the overlay  in rcar_du_of_lvds_patch_one()
138 	if (clk->args_count >= ARRAY_SIZE(value) - 1)  in rcar_du_of_lvds_patch_one()
143 	value[0] = cpu_to_be32(clk->np->phandle);  in rcar_du_of_lvds_patch_one()
144 	for (i = 0; i < clk->args_count; ++i)  in rcar_du_of_lvds_patch_one()
145 		value[i + 1] = cpu_to_be32(clk->args[i]);  in rcar_du_of_lvds_patch_one()
147 	psize = (clk->args_count + 1) * 4;  in rcar_du_of_lvds_patch_one()
148 	ret = rcar_du_of_add_property(&rcar_du_lvds_changeset, lvds,  in rcar_du_of_lvds_patch_one()
154 	 * Insert the node in the OF graph: patch the LVDS ports remote-endpoint  in rcar_du_of_lvds_patch_one()
157 	 * overlay would contain a phandle for the DU LVDS output port that  in rcar_du_of_lvds_patch_one()
159 	 * is board-specific.  in rcar_du_of_lvds_patch_one()
161 	value[0] = cpu_to_be32(local->phandle);  in rcar_du_of_lvds_patch_one()
162 	value[1] = cpu_to_be32(remote->phandle);  in rcar_du_of_lvds_patch_one()
167 		endpoint = of_graph_get_endpoint_by_regs(lvds, i, 0);  in rcar_du_of_lvds_patch_one()
169 			ret = -EINVAL;  in rcar_du_of_lvds_patch_one()
174 					      endpoint, "remote-endpoint",  in rcar_du_of_lvds_patch_one()
215 	info = match->data;  in rcar_du_of_lvds_patch()
218 	if (WARN_ON(info->num_lvds > ARRAY_SIZE(lvds_data)))  in rcar_du_of_lvds_patch()
222 	 * Skip if the LVDS nodes already exists.  in rcar_du_of_lvds_patch()
230 	soc_name = strchr(match->compatible, '-') + 1;  in rcar_du_of_lvds_patch()
231 	sprintf(compatible, "renesas,%s-lvds", soc_name);  in rcar_du_of_lvds_patch()
240 	 * specifier and the local and remote endpoint of the LVDS link for  in rcar_du_of_lvds_patch()
243 	for (i = 0; i < info->num_lvds; ++i) {  in rcar_du_of_lvds_patch()
244 		struct lvds_of_data *lvds = &lvds_data[i];  in rcar_du_of_lvds_patch()  local
249 		sprintf(name, "lvds.%u", i);  in rcar_du_of_lvds_patch()
250 		index = of_property_match_string(du_node, "clock-names", name);  in rcar_du_of_lvds_patch()
255 						 "#clock-cells", index,  in rcar_du_of_lvds_patch()
256 						 &lvds->clkspec);  in rcar_du_of_lvds_patch()
260 		port = info->routes[RCAR_DU_OUTPUT_LVDS0 + i].port;  in rcar_du_of_lvds_patch()
262 		lvds->local = of_graph_get_endpoint_by_regs(du_node, port, 0);  in rcar_du_of_lvds_patch()
263 		if (!lvds->local)  in rcar_du_of_lvds_patch()
266 		lvds->remote = of_graph_get_remote_endpoint(lvds->local);  in rcar_du_of_lvds_patch()
267 		if (!lvds->remote)  in rcar_du_of_lvds_patch()
270 		index = of_property_match_string(du_node, "reg-names", name);  in rcar_du_of_lvds_patch()
274 		of_address_to_resource(du_node, index, &lvds->res);  in rcar_du_of_lvds_patch()
279 				       match->compatible);  in rcar_du_of_lvds_patch()
283 	/* Patch the newly created LVDS encoder nodes. */  in rcar_du_of_lvds_patch()
303 		/* Patch the LVDS encoder. */  in rcar_du_of_lvds_patch()
310 	for (i = 0; i < info->num_lvds; ++i) {  in rcar_du_of_lvds_patch()