Merge "disp: msm: sde: fix-up reg-bus device node parsing logic for rsc"

// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2014-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.

 */

#define pr_fmt(fmt)	"[drm:%s:%d]: " fmt, __func__, __LINE__

	struct sde_power_handle *phandle)

{

	int rc = 0;

	const char *bus_name = "qcom,sde-reg-bus";

	phandle->reg_bus_hdl = of_icc_get(&pdev->dev, "qcom,sde-reg-bus");

	/* not all clients need reg-bus, skip if not referenced for this node */

	rc = of_property_match_string(pdev->dev.of_node,

			"interconnect-names", bus_name);

	if (rc < 0)

		goto end;

	phandle->reg_bus_hdl = of_icc_get(&pdev->dev, bus_name);

	if (IS_ERR_OR_NULL(phandle->reg_bus_hdl)) {

		pr_err("reg bus handle parsing failed\n");

		rc = PTR_ERR(phandle->reg_bus_hdl);

		pr_err("bus %s parsing failed, rc:%d\n", bus_name, rc);

		phandle->reg_bus_hdl = NULL;

		rc = -EINVAL;

	} else {

		pr_debug("reg_bus_hdl parsing success\n");

		return rc;

	}

	return rc;

end:

	pr_debug("bus %s dt node %s(%d), hdl is %s\n",

			bus_name, rc < 0 ? "missing" : "found", rc,

			phandle->reg_bus_hdl ? "valid" : "NULL");

	return 0;

}

static void sde_power_reg_bus_unregister(struct icc_path *reg_bus_hdl)