1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * pm_domain.h - Definitions and headers related to device power domains.
25  * PD_FLAG_NO_DEV_LINK:		As the default behaviour creates a device-link
26  *				for every PM domain that gets attached, this
29  * PD_FLAG_DEV_LINK_ON:		Add the DL_FLAG_RPM_ACTIVE to power-on the
30  *				supplier and its PM domain when creating the
31  *				device-links.
37  *				index for the attached PM domain.
68  *				->power_on|off(), doesn't sleep. Hence, these
70  *				enables genpd to power on/off the PM domain,
76  * GENPD_FLAG_ALWAYS_ON:	Instructs genpd to always keep the PM domain
79  * GENPD_FLAG_ACTIVE_WAKEUP:	Instructs genpd to keep the PM domain powered
87  *				deploy idle power management support for CPUs
90  *				last-man-standing algorithm, for the CPUs in the
91  *				PM domain.
93  * GENPD_FLAG_RPM_ALWAYS_ON:	Instructs genpd to always keep the PM domain
98  *				optimal idle state.
100  * GENPD_FLAG_OPP_TABLE_FW:	The genpd provider supports performance states,
106  *				get their genpd-names directly from FW.
119 	GENPD_STATE_ON = 0,	/* PM domain is on */
120 	GENPD_STATE_OFF,	/* PM domain is off */
131 	bool (*power_down_ok)(struct dev_pm_domain *domain);
166 	struct dev_pm_domain domain;	/* PM domain operations */  member
168 	struct list_head parent_links;	/* Links with PM domain as a parent */
169 	struct list_head child_links;	/* Links with PM domain as a child */
174 	struct fwnode_handle *provider;	/* Identity of the domain provider */
178 	enum gpd_status status;	/* Current state of the domain */
186 	int (*power_off)(struct generic_pm_domain *domain);
187 	int (*power_on)(struct generic_pm_domain *domain);
193 	int (*set_hwmode_dev)(struct generic_pm_domain *domain,
195 	bool (*get_hwmode_dev)(struct generic_pm_domain *domain,
197 	int (*attach_dev)(struct generic_pm_domain *domain,
199 	void (*detach_dev)(struct generic_pm_domain *domain,
202 	struct genpd_power_state *states;  member
203 	void (*free_states)(struct genpd_power_state *states,
205 	unsigned int state_count; /* number of states */
225 	return container_of(pd, struct generic_pm_domain, domain);  in pd_to_genpd()
234 	/* Sub-domain's per-master domain performance state */
275 	return to_gpd_data(dev->power.subsys_data->domain_data);  in dev_gpd_data()
306 	return ERR_PTR(-ENOSYS);  in dev_gpd_data()
311 	return -ENOSYS;  in pm_genpd_add_device()
315 	return -ENOSYS;  in pm_genpd_remove_device()
320 	return -ENOSYS;  in pm_genpd_add_subdomain()
325 	return -ENOSYS;  in pm_genpd_remove_subdomain()
330 	return -ENOSYS;  in pm_genpd_init()
334 	return -EOPNOTSUPP;  in pm_genpd_remove()
339 	return ERR_PTR(-EOPNOTSUPP);  in dev_to_genpd_dev()
345 	return -EOPNOTSUPP;  in dev_pm_genpd_set_performance_state()
351 	return -EOPNOTSUPP;  in dev_pm_genpd_add_notifier()
356 	return -EOPNOTSUPP;  in dev_pm_genpd_remove_notifier()
371 	return -EOPNOTSUPP;  in dev_pm_genpd_set_hwmode()
391 /* OF PM domain providers */
416 			       struct genpd_power_state **states, int *n);
427 	return -EOPNOTSUPP;  in of_genpd_add_provider_simple()
433 	return -EOPNOTSUPP;  in of_genpd_add_provider_onecell()
441 	return -ENODEV;  in of_genpd_add_device()
447 	return -ENODEV;  in of_genpd_add_subdomain()
453 	return -ENODEV;  in of_genpd_remove_subdomain()
457 			struct genpd_power_state **states, int *n)  in of_genpd_parse_idle_states()  argument
459 	return -ENODEV;  in of_genpd_parse_idle_states()
482 	return ERR_PTR(-EOPNOTSUPP);  in of_genpd_remove_last()