1 // SPDX-License-Identifier: GPL-2.0+
3  * Actions Semi Owl Smart Power System (SPS)
5  * Copyright 2012 Actions Semi Inc.
6  * Author: Actions Semi, Inc.
14 #include <linux/soc/actions/owl-sps.h>
15 #include <dt-bindings/power/owl-s500-powergate.h>
16 #include <dt-bindings/power/owl-s700-powergate.h>
17 #include <dt-bindings/power/owl-s900-powergate.h>
47 static int owl_sps_set_power(struct owl_sps_domain *pd, bool enable)  in owl_sps_set_power()
51 	ack_mask = BIT(pd->info->ack_bit);  in owl_sps_set_power()
52 	pwr_mask = BIT(pd->info->pwr_bit);  in owl_sps_set_power()
54 	return owl_sps_set_pg(pd->sps->base, pwr_mask, ack_mask, enable);  in owl_sps_set_power()
57 static int owl_sps_power_on(struct generic_pm_domain *domain)  in owl_sps_power_on()
61 	dev_dbg(pd->sps->dev, "%s power on", pd->info->name);  in owl_sps_power_on()
66 static int owl_sps_power_off(struct generic_pm_domain *domain)  in owl_sps_power_off()
70 	dev_dbg(pd->sps->dev, "%s power off", pd->info->name);  in owl_sps_power_off()
75 static int owl_sps_init_domain(struct owl_sps *sps, int index)  in owl_sps_init_domain()
79 	pd = devm_kzalloc(sps->dev, sizeof(*pd), GFP_KERNEL);  in owl_sps_init_domain()
81 		return -ENOMEM;  in owl_sps_init_domain()
83 	pd->info = &sps->info->domains[index];  in owl_sps_init_domain()
84 	pd->sps = sps;  in owl_sps_init_domain()
86 	pd->genpd.name = pd->info->name;  in owl_sps_init_domain()
87 	pd->genpd.power_on = owl_sps_power_on;  in owl_sps_init_domain()
88 	pd->genpd.power_off = owl_sps_power_off;  in owl_sps_init_domain()
89 	pd->genpd.flags = pd->info->genpd_flags;  in owl_sps_init_domain()
90 	pm_genpd_init(&pd->genpd, NULL, false);  in owl_sps_init_domain()
92 	sps->genpd_data.domains[index] = &pd->genpd;  in owl_sps_init_domain()
97 static int owl_sps_probe(struct platform_device *pdev)  in owl_sps_probe()
104 	if (!pdev->dev.of_node) {  in owl_sps_probe()
105 		dev_err(&pdev->dev, "no device node\n");  in owl_sps_probe()
106 		return -ENODEV;  in owl_sps_probe()
109 	match = of_match_device(pdev->dev.driver->of_match_table, &pdev->dev);  in owl_sps_probe()
110 	if (!match || !match->data) {  in owl_sps_probe()
111 		dev_err(&pdev->dev, "unknown compatible or missing data\n");  in owl_sps_probe()
112 		return -EINVAL;  in owl_sps_probe()
115 	sps_info = match->data;  in owl_sps_probe()
117 	sps = devm_kzalloc(&pdev->dev,  in owl_sps_probe()
118 			   struct_size(sps, domains, sps_info->num_domains),  in owl_sps_probe()
121 		return -ENOMEM;  in owl_sps_probe()
123 	sps->base = of_io_request_and_map(pdev->dev.of_node, 0, "owl-sps");  in owl_sps_probe()
124 	if (IS_ERR(sps->base)) {  in owl_sps_probe()
125 		dev_err(&pdev->dev, "failed to map sps registers\n");  in owl_sps_probe()
126 		return PTR_ERR(sps->base);  in owl_sps_probe()
129 	sps->dev = &pdev->dev;  in owl_sps_probe()
130 	sps->info = sps_info;  in owl_sps_probe()
131 	sps->genpd_data.domains = sps->domains;  in owl_sps_probe()
132 	sps->genpd_data.num_domains = sps_info->num_domains;  in owl_sps_probe()
134 	for (i = 0; i < sps_info->num_domains; i++) {  in owl_sps_probe()
140 	ret = of_genpd_add_provider_onecell(pdev->dev.of_node, &sps->genpd_data);  in owl_sps_probe()
142 		dev_err(&pdev->dev, "failed to add provider (%d)", ret);  in owl_sps_probe()
149 static const struct owl_sps_domain_info s500_sps_domains[] = {
199 static const struct owl_sps_info s500_sps_info = {
204 static const struct owl_sps_domain_info s700_sps_domains[] = {
239 static const struct owl_sps_info s700_sps_info = {
244 static const struct owl_sps_domain_info s900_sps_domains[] = {
295 static const struct owl_sps_info s900_sps_info = {
300 static const struct of_device_id owl_sps_of_matches[] = {
301 	{ .compatible = "actions,s500-sps", .data = &s500_sps_info },
302 	{ .compatible = "actions,s700-sps", .data = &s700_sps_info },
303 	{ .compatible = "actions,s900-sps", .data = &s900_sps_info },
307 static struct platform_driver owl_sps_platform_driver = {
310 		.name = "owl-sps",
316 static int __init owl_sps_init(void)  in owl_sps_init()