1 // SPDX-License-Identifier: GPL-2.0
9 // conjunction with runtime-pm. Support for both device-tree and non-device-tree
40 	u32 timeout, pwr;  in exynos_pd_power()  local
44 	base = pd->base;  in exynos_pd_power()
46 	pwr = power_on ? pd->local_pwr_cfg : 0;  in exynos_pd_power()
47 	writel_relaxed(pwr, base);  in exynos_pd_power()
49 	/* Wait max 1ms */  in exynos_pd_power()
50 	timeout = 10;  in exynos_pd_power()
52 	while ((readl_relaxed(base + 0x4) & pd->local_pwr_cfg) != pwr) {  in exynos_pd_power()
53 		if (!timeout) {  in exynos_pd_power()
55 			pr_err("Power domain %s %s failed\n", domain->name, op);  in exynos_pd_power()
56 			return -ETIMEDOUT;  in exynos_pd_power()
58 		timeout--;  in exynos_pd_power()
86 		.compatible = "samsung,exynos4210-pd",
89 		.compatible = "samsung,exynos5433-pd",
101 		name = kbasename(node->full_name);  in exynos_get_domain_name()
108 	struct device *dev = &pdev->dev;  in exynos_pd_probe()
109 	struct device_node *np = dev->of_node;  in exynos_pd_probe()
117 		return -ENOMEM;  in exynos_pd_probe()
119 	pd->pd.name = exynos_get_domain_name(dev, np);  in exynos_pd_probe()
120 	if (!pd->pd.name)  in exynos_pd_probe()
121 		return -ENOMEM;  in exynos_pd_probe()
123 	pd->base = of_iomap(np, 0);  in exynos_pd_probe()
124 	if (!pd->base)  in exynos_pd_probe()
125 		return -ENODEV;  in exynos_pd_probe()
127 	pd->pd.power_off = exynos_pd_power_off;  in exynos_pd_probe()
128 	pd->pd.power_on = exynos_pd_power_on;  in exynos_pd_probe()
129 	pd->local_pwr_cfg = pm_domain_cfg->local_pwr_cfg;  in exynos_pd_probe()
132 	 * Some Samsung platforms with bootloaders turning on the splash-screen  in exynos_pd_probe()
133 	 * and handing it over to the kernel, requires the power-domains to be  in exynos_pd_probe()
137 	    of_device_is_compatible(np, "samsung,exynos4210-pd"))  in exynos_pd_probe()
138 		exynos_pd_power_off(&pd->pd);  in exynos_pd_probe()
140 	on = readl_relaxed(pd->base + 0x4) & pd->local_pwr_cfg;  in exynos_pd_probe()
142 	pm_genpd_init(&pd->pd, NULL, !on);  in exynos_pd_probe()
143 	ret = of_genpd_add_provider_simple(np, &pd->pd);  in exynos_pd_probe()
145 	if (ret == 0 && of_parse_phandle_with_args(np, "power-domains",  in exynos_pd_probe()
146 				      "#power-domain-cells", 0, &parent) == 0) {  in exynos_pd_probe()
165 		.name		= "exynos-pd",