include/linux/pm_domain.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * pm_domain.h - Definitions and headers related to device power domains.
31  *				->power_on|off(), doesn't sleep. Hence, these
33  *				enables genpd to power on/off the PM domain,
39  * GENPD_FLAG_ALWAYS_ON:	Instructs genpd to always keep the PM domain
42  * GENPD_FLAG_ACTIVE_WAKEUP:	Instructs genpd to keep the PM domain powered
50  *				deploy idle power management support for CPUs
53  *				last-man-standing algorithm, for the CPUs in the
54  *				PM domain.
56  * GENPD_FLAG_RPM_ALWAYS_ON:	Instructs genpd to always keep the PM domain
67 	GENPD_STATE_ON = 0,	/* PM domain is on */
68 	GENPD_STATE_OFF,	/* PM domain is off */
79 	bool (*power_down_ok)(struct dev_pm_domain *domain);
105 	struct dev_pm_domain domain;	/* PM domain operations */  member
107 	struct list_head parent_links;	/* Links with PM domain as a parent */
108 	struct list_head child_links;	/* Links with PM domain as a child */
112 	struct fwnode_handle *provider;	/* Identity of the domain provider */
116 	enum gpd_status status;	/* Current state of the domain */
120 	unsigned int performance_state;	/* Aggregated max performance state */
122 	int (*power_off)(struct generic_pm_domain *domain);
123 	int (*power_on)(struct generic_pm_domain *domain);
129 				     unsigned int state);
135 	int (*attach_dev)(struct generic_pm_domain *domain,
137 	void (*detach_dev)(struct generic_pm_domain *domain,
144 	unsigned int state_idx; /* state that genpd will go to when off */
160 	return container_of(pd, struct generic_pm_domain, domain);  in pd_to_genpd()
169 	/* Sub-domain's per-master domain performance state */
205 	return to_gpd_data(dev->power.subsys_data->domain_data);  in dev_gpd_data()
217 int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state);
230 	return ERR_PTR(-ENOSYS);  in dev_gpd_data()
235 	return -ENOSYS;  in pm_genpd_add_device()
239 	return -ENOSYS;  in pm_genpd_remove_device()
244 	return -ENOSYS;  in pm_genpd_add_subdomain()
249 	return -ENOSYS;  in pm_genpd_remove_subdomain()
254 	return -ENOSYS;  in pm_genpd_init()
258 	return -ENOTSUPP;  in pm_genpd_remove()
262 						     unsigned int state)  in dev_pm_genpd_set_performance_state()  argument
264 	return -ENOTSUPP;  in dev_pm_genpd_set_performance_state()
270 	return -ENOTSUPP;  in dev_pm_genpd_add_notifier()
275 	return -ENOTSUPP;  in dev_pm_genpd_remove_notifier()
290 /* OF PM domain providers */
328 	return -ENOTSUPP;  in of_genpd_add_provider_simple()
334 	return -ENOTSUPP;  in of_genpd_add_provider_onecell()
342 	return -ENODEV;  in of_genpd_add_device()
348 	return -ENODEV;  in of_genpd_add_subdomain()
354 	return -ENODEV;  in of_genpd_remove_subdomain()
360 	return -ENODEV;  in of_genpd_parse_idle_states()
390 	return ERR_PTR(-ENOTSUPP);  in of_genpd_remove_last()