1 // SPDX-License-Identifier: GPL-2.0-only
5 #include <linux/io.h>
53 	u32 status = readl(pd->base + PD_STATUS_REG);  in sun20i_ppu_pd_is_on()
67 	ret = readl_poll_timeout(pd->base + PD_STATUS_REG, status,  in sun20i_ppu_pd_set_power()
73 	writel(state, pd->base + PD_COMMAND_REG);  in sun20i_ppu_pd_set_power()
76 	ret = readl_poll_timeout(pd->base + PD_STATUS_REG, status,  in sun20i_ppu_pd_set_power()
83 	writel(status, pd->base + PD_STATUS_REG);  in sun20i_ppu_pd_set_power()
105 	struct device *dev = &pdev->dev;  in sun20i_ppu_probe()
115 		return -EINVAL;  in sun20i_ppu_probe()
117 	pds = devm_kcalloc(dev, desc->num_domains, sizeof(*pds), GFP_KERNEL);  in sun20i_ppu_probe()
119 		return -ENOMEM;  in sun20i_ppu_probe()
123 		return -ENOMEM;  in sun20i_ppu_probe()
125 	ppu->domains = devm_kcalloc(dev, desc->num_domains,  in sun20i_ppu_probe()
126 				    sizeof(*ppu->domains), GFP_KERNEL);  in sun20i_ppu_probe()
127 	if (!ppu->domains)  in sun20i_ppu_probe()
128 		return -ENOMEM;  in sun20i_ppu_probe()
130 	ppu->num_domains = desc->num_domains;  in sun20i_ppu_probe()
149 	for (unsigned int i = 0; i < ppu->num_domains; ++i) {  in sun20i_ppu_probe()
152 		pd->genpd.name		= desc->names[i];  in sun20i_ppu_probe()
153 		pd->genpd.power_off	= sun20i_ppu_pd_power_off;  in sun20i_ppu_probe()
154 		pd->genpd.power_on	= sun20i_ppu_pd_power_on;  in sun20i_ppu_probe()
155 		pd->base		= base + PD_REGS_SIZE * i;  in sun20i_ppu_probe()
157 		ret = pm_genpd_init(&pd->genpd, NULL, sun20i_ppu_pd_is_on(pd));  in sun20i_ppu_probe()
160 				 pd->genpd.name, ret);  in sun20i_ppu_probe()
164 		ppu->domains[i] = &pd->genpd;  in sun20i_ppu_probe()
167 	ret = of_genpd_add_provider_onecell(dev->of_node, ppu);  in sun20i_ppu_probe()
187 		.compatible	= "allwinner,sun20i-d1-ppu",
197 		.name			= "sun20i-ppu",
199 		/* Power domains cannot be removed while they are in use. */