1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2015-2017 Texas Instruments Incorporated - http://www.ti.com/
6  *	J Keerthy <j-[email protected]>
7  *	Dave Gerlach <d-[email protected]>
19 #include <dt-bindings/soc/ti,sci_pm_domain.h>
26  * @pd_list: list of all the power domains on the device
64 	struct generic_pm_domain *genpd = pd_to_genpd(dev->pm_domain);  in ti_sci_pd_set_lat_constraint()
66 	const struct ti_sci_handle *ti_sci = pd->parent->ti_sci;  in ti_sci_pd_set_lat_constraint()
72 	ret = ti_sci->ops.pm_ops.set_latency_constraint(ti_sci, val_ms, TISCI_MSG_CONSTRAINT_SET);  in ti_sci_pd_set_lat_constraint()
78 			pd->idx, val);  in ti_sci_pd_set_lat_constraint()
84 	struct generic_pm_domain *genpd = pd_to_genpd(dev->pm_domain);  in ti_sci_pd_set_wkup_constraint()
86 	const struct ti_sci_handle *ti_sci = pd->parent->ti_sci;  in ti_sci_pd_set_wkup_constraint()
91 		 * If device can wakeup using IO daisy chain wakeups,  in ti_sci_pd_set_wkup_constraint()
94 		if (dev->power.wakeirq) {  in ti_sci_pd_set_wkup_constraint()
99 		ret = ti_sci->ops.pm_ops.set_device_constraint(ti_sci, pd->idx,  in ti_sci_pd_set_wkup_constraint()
102 			dev_dbg(dev, "ti_sci_pd: ID:%d set device constraint.\n", pd->idx);  in ti_sci_pd_set_wkup_constraint()
113 	const struct ti_sci_handle *ti_sci = pd->parent->ti_sci;  in ti_sci_pd_power_off()
115 	return ti_sci->ops.dev_ops.put_device(ti_sci, pd->idx);  in ti_sci_pd_power_off()
125 	const struct ti_sci_handle *ti_sci = pd->parent->ti_sci;  in ti_sci_pd_power_on()
127 	if (pd->exclusive)  in ti_sci_pd_power_on()
128 		return ti_sci->ops.dev_ops.get_device_exclusive(ti_sci,  in ti_sci_pd_power_on()
129 								pd->idx);  in ti_sci_pd_power_on()
131 		return ti_sci->ops.dev_ops.get_device(ti_sci, pd->idx);  in ti_sci_pd_power_on()
166 	unsigned int idx = genpdspec->args[0];  in ti_sci_pd_xlate()
168 	if (genpdspec->args_count != 1 && genpdspec->args_count != 2)  in ti_sci_pd_xlate()
169 		return ERR_PTR(-EINVAL);  in ti_sci_pd_xlate()
171 	if (idx >= genpd_data->num_domains) {  in ti_sci_pd_xlate()
173 		return ERR_PTR(-EINVAL);  in ti_sci_pd_xlate()
176 	if (!genpd_data->domains[idx])  in ti_sci_pd_xlate()
177 		return ERR_PTR(-ENOENT);  in ti_sci_pd_xlate()
179 	genpd_to_ti_sci_pd(genpd_data->domains[idx])->exclusive =  in ti_sci_pd_xlate()
180 		genpdspec->args[1];  in ti_sci_pd_xlate()
182 	return genpd_data->domains[idx];  in ti_sci_pd_xlate()
186 	{ .compatible = "ti,sci-pm-domain", },
195 	list_for_each_entry(pd, &pd_provider->pd_list, node) {  in ti_sci_pm_idx_exists()
196 		if (pd->idx == idx)  in ti_sci_pm_idx_exists()
205 	struct device *dev = &pdev->dev;  in ti_sci_pm_domain_probe()
215 		return -ENOMEM;  in ti_sci_pm_domain_probe()
217 	pd_provider->ti_sci = devm_ti_sci_get_handle(dev);  in ti_sci_pm_domain_probe()
218 	if (IS_ERR(pd_provider->ti_sci))  in ti_sci_pm_domain_probe()
219 		return PTR_ERR(pd_provider->ti_sci);  in ti_sci_pm_domain_probe()
221 	pd_provider->dev = dev;  in ti_sci_pm_domain_probe()
223 	INIT_LIST_HEAD(&pd_provider->pd_list);  in ti_sci_pm_domain_probe()
225 	/* Find highest device ID used for power domains */  in ti_sci_pm_domain_probe()
226 	for_each_node_with_property(np, "power-domains") {  in ti_sci_pm_domain_probe()
229 		while (!of_parse_phandle_with_args(np, "power-domains",  in ti_sci_pm_domain_probe()
230 						   "#power-domain-cells",  in ti_sci_pm_domain_probe()
233 			if (args.args_count >= 1 && args.np == dev->of_node) {  in ti_sci_pm_domain_probe()
246 					return -ENOMEM;  in ti_sci_pm_domain_probe()
248 				pd->pd.name = devm_kasprintf(dev, GFP_KERNEL,  in ti_sci_pm_domain_probe()
251 				if (!pd->pd.name)  in ti_sci_pm_domain_probe()
252 					return -ENOMEM;  in ti_sci_pm_domain_probe()
254 				pd->pd.power_off = ti_sci_pd_power_off;  in ti_sci_pm_domain_probe()
255 				pd->pd.power_on = ti_sci_pd_power_on;  in ti_sci_pm_domain_probe()
256 				pd->pd.flags |= GENPD_FLAG_ACTIVE_WAKEUP;  in ti_sci_pm_domain_probe()
257 				pd->idx = args.args[0];  in ti_sci_pm_domain_probe()
258 				pd->parent = pd_provider;  in ti_sci_pm_domain_probe()
263 				if (pd_provider->ti_sci->ops.pm_ops.set_device_constraint &&  in ti_sci_pm_domain_probe()
264 				    pd_provider->ti_sci->ops.pm_ops.set_latency_constraint)  in ti_sci_pm_domain_probe()
265 					pd->pd.domain.ops.suspend = ti_sci_pd_suspend;  in ti_sci_pm_domain_probe()
267 				pm_genpd_init(&pd->pd, NULL, true);  in ti_sci_pm_domain_probe()
269 				list_add(&pd->node, &pd_provider->pd_list);  in ti_sci_pm_domain_probe()
278 	pd_provider->data.domains =  in ti_sci_pm_domain_probe()
280 			     sizeof(*pd_provider->data.domains),  in ti_sci_pm_domain_probe()
282 	if (!pd_provider->data.domains)  in ti_sci_pm_domain_probe()
283 		return -ENOMEM;  in ti_sci_pm_domain_probe()
285 	pd_provider->data.num_domains = max_id + 1;  in ti_sci_pm_domain_probe()
286 	pd_provider->data.xlate = ti_sci_pd_xlate;  in ti_sci_pm_domain_probe()
288 	list_for_each_entry(pd, &pd_provider->pd_list, node)  in ti_sci_pm_domain_probe()
289 		pd_provider->data.domains[pd->idx] = &pd->pd;  in ti_sci_pm_domain_probe()
291 	return of_genpd_add_provider_onecell(dev->of_node, &pd_provider->data);  in ti_sci_pm_domain_probe()