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.
33  *				->power_on|off(), doesn't sleep. Hence, these
35  *				enables genpd to power on/off the PM domain,
41  * GENPD_FLAG_ALWAYS_ON:	Instructs genpd to always keep the PM domain
44  * GENPD_FLAG_ACTIVE_WAKEUP:	Instructs genpd to keep the PM domain powered
52  *				deploy idle power management support for CPUs
55  *				last-man-standing algorithm, for the CPUs in the
56  *				PM domain.
58  * GENPD_FLAG_RPM_ALWAYS_ON:	Instructs genpd to always keep the PM domain
63  *				optimal idle state.
65  * GENPD_FLAG_OPP_TABLE_FW:	The genpd provider supports performance states,
79 	GENPD_STATE_ON = 0,	/* PM domain is on */
80 	GENPD_STATE_OFF,	/* PM domain is off */
91 	bool (*power_down_ok)(struct dev_pm_domain *domain);
125 	struct dev_pm_domain domain;	/* PM domain operations */  member
127 	struct list_head parent_links;	/* Links with PM domain as a parent */
128 	struct list_head child_links;	/* Links with PM domain as a child */
133 	struct fwnode_handle *provider;	/* Identity of the domain provider */
137 	enum gpd_status status;	/* Current state of the domain */
144 	int (*power_off)(struct generic_pm_domain *domain);
145 	int (*power_on)(struct generic_pm_domain *domain);
151 	int (*attach_dev)(struct generic_pm_domain *domain,
153 	void (*detach_dev)(struct generic_pm_domain *domain,
156 	struct genpd_power_state *states;  member
157 	void (*free_states)(struct genpd_power_state *states,
159 	unsigned int state_count; /* number of states */
176 	return container_of(pd, struct generic_pm_domain, domain);  in pd_to_genpd()
185 	/* Sub-domain's per-master domain performance state */
224 	return to_gpd_data(dev->power.subsys_data->domain_data);  in dev_gpd_data()
252 	return ERR_PTR(-ENOSYS);  in dev_gpd_data()
257 	return -ENOSYS;  in pm_genpd_add_device()
261 	return -ENOSYS;  in pm_genpd_remove_device()
266 	return -ENOSYS;  in pm_genpd_add_subdomain()
271 	return -ENOSYS;  in pm_genpd_remove_subdomain()
276 	return -ENOSYS;  in pm_genpd_init()
280 	return -EOPNOTSUPP;  in pm_genpd_remove()
286 	return -EOPNOTSUPP;  in dev_pm_genpd_set_performance_state()
292 	return -EOPNOTSUPP;  in dev_pm_genpd_add_notifier()
297 	return -EOPNOTSUPP;  in dev_pm_genpd_remove_notifier()
322 /* OF PM domain providers */
347 			       struct genpd_power_state **states, int *n);
358 	return -EOPNOTSUPP;  in of_genpd_add_provider_simple()
364 	return -EOPNOTSUPP;  in of_genpd_add_provider_onecell()
372 	return -ENODEV;  in of_genpd_add_device()
378 	return -ENODEV;  in of_genpd_add_subdomain()
384 	return -ENODEV;  in of_genpd_remove_subdomain()
388 			struct genpd_power_state **states, int *n)  in of_genpd_parse_idle_states()  argument
390 	return -ENODEV;  in of_genpd_parse_idle_states()
413 	return ERR_PTR(-EOPNOTSUPP);  in of_genpd_remove_last()