mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 09:45:07 +07:00
27dceb81f4
For the multiple PM domain case, let's introduce a new API called dev_pm_domain_attach_by_name(). This allows a consumer driver to associate its device with one of its PM domains, by using a name based lookup. Do note that, currently it's only genpd that supports multiple PM domains per device, but dev_pm_domain_attach_by_name() can easily by extended to cover other PM domain types, if/when needed. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
337 lines
9.8 KiB
C
337 lines
9.8 KiB
C
/*
|
|
* pm_domain.h - Definitions and headers related to device power domains.
|
|
*
|
|
* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
|
|
*
|
|
* This file is released under the GPLv2.
|
|
*/
|
|
|
|
#ifndef _LINUX_PM_DOMAIN_H
|
|
#define _LINUX_PM_DOMAIN_H
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/err.h>
|
|
#include <linux/of.h>
|
|
#include <linux/notifier.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
/* Defines used for the flags field in the struct generic_pm_domain */
|
|
#define GENPD_FLAG_PM_CLK (1U << 0) /* PM domain uses PM clk */
|
|
#define GENPD_FLAG_IRQ_SAFE (1U << 1) /* PM domain operates in atomic */
|
|
#define GENPD_FLAG_ALWAYS_ON (1U << 2) /* PM domain is always powered on */
|
|
#define GENPD_FLAG_ACTIVE_WAKEUP (1U << 3) /* Keep devices active if wakeup */
|
|
|
|
enum gpd_status {
|
|
GPD_STATE_ACTIVE = 0, /* PM domain is active */
|
|
GPD_STATE_POWER_OFF, /* PM domain is off */
|
|
};
|
|
|
|
struct dev_power_governor {
|
|
bool (*power_down_ok)(struct dev_pm_domain *domain);
|
|
bool (*suspend_ok)(struct device *dev);
|
|
};
|
|
|
|
struct gpd_dev_ops {
|
|
int (*start)(struct device *dev);
|
|
int (*stop)(struct device *dev);
|
|
};
|
|
|
|
struct genpd_power_state {
|
|
s64 power_off_latency_ns;
|
|
s64 power_on_latency_ns;
|
|
s64 residency_ns;
|
|
struct fwnode_handle *fwnode;
|
|
ktime_t idle_time;
|
|
};
|
|
|
|
struct genpd_lock_ops;
|
|
struct dev_pm_opp;
|
|
|
|
struct generic_pm_domain {
|
|
struct device dev;
|
|
struct dev_pm_domain domain; /* PM domain operations */
|
|
struct list_head gpd_list_node; /* Node in the global PM domains list */
|
|
struct list_head master_links; /* Links with PM domain as a master */
|
|
struct list_head slave_links; /* Links with PM domain as a slave */
|
|
struct list_head dev_list; /* List of devices */
|
|
struct dev_power_governor *gov;
|
|
struct work_struct power_off_work;
|
|
struct fwnode_handle *provider; /* Identity of the domain provider */
|
|
bool has_provider;
|
|
const char *name;
|
|
atomic_t sd_count; /* Number of subdomains with power "on" */
|
|
enum gpd_status status; /* Current state of the domain */
|
|
unsigned int device_count; /* Number of devices */
|
|
unsigned int suspended_count; /* System suspend device counter */
|
|
unsigned int prepared_count; /* Suspend counter of prepared devices */
|
|
unsigned int performance_state; /* Aggregated max performance state */
|
|
int (*power_off)(struct generic_pm_domain *domain);
|
|
int (*power_on)(struct generic_pm_domain *domain);
|
|
unsigned int (*opp_to_performance_state)(struct generic_pm_domain *genpd,
|
|
struct dev_pm_opp *opp);
|
|
int (*set_performance_state)(struct generic_pm_domain *genpd,
|
|
unsigned int state);
|
|
struct gpd_dev_ops dev_ops;
|
|
s64 max_off_time_ns; /* Maximum allowed "suspended" time. */
|
|
bool max_off_time_changed;
|
|
bool cached_power_down_ok;
|
|
int (*attach_dev)(struct generic_pm_domain *domain,
|
|
struct device *dev);
|
|
void (*detach_dev)(struct generic_pm_domain *domain,
|
|
struct device *dev);
|
|
unsigned int flags; /* Bit field of configs for genpd */
|
|
struct genpd_power_state *states;
|
|
unsigned int state_count; /* number of states */
|
|
unsigned int state_idx; /* state that genpd will go to when off */
|
|
void *free; /* Free the state that was allocated for default */
|
|
ktime_t on_time;
|
|
ktime_t accounting_time;
|
|
const struct genpd_lock_ops *lock_ops;
|
|
union {
|
|
struct mutex mlock;
|
|
struct {
|
|
spinlock_t slock;
|
|
unsigned long lock_flags;
|
|
};
|
|
};
|
|
|
|
};
|
|
|
|
static inline struct generic_pm_domain *pd_to_genpd(struct dev_pm_domain *pd)
|
|
{
|
|
return container_of(pd, struct generic_pm_domain, domain);
|
|
}
|
|
|
|
struct gpd_link {
|
|
struct generic_pm_domain *master;
|
|
struct list_head master_node;
|
|
struct generic_pm_domain *slave;
|
|
struct list_head slave_node;
|
|
};
|
|
|
|
struct gpd_timing_data {
|
|
s64 suspend_latency_ns;
|
|
s64 resume_latency_ns;
|
|
s64 effective_constraint_ns;
|
|
bool constraint_changed;
|
|
bool cached_suspend_ok;
|
|
};
|
|
|
|
struct pm_domain_data {
|
|
struct list_head list_node;
|
|
struct device *dev;
|
|
};
|
|
|
|
struct generic_pm_domain_data {
|
|
struct pm_domain_data base;
|
|
struct gpd_timing_data td;
|
|
struct notifier_block nb;
|
|
unsigned int performance_state;
|
|
void *data;
|
|
};
|
|
|
|
#ifdef CONFIG_PM_GENERIC_DOMAINS
|
|
static inline struct generic_pm_domain_data *to_gpd_data(struct pm_domain_data *pdd)
|
|
{
|
|
return container_of(pdd, struct generic_pm_domain_data, base);
|
|
}
|
|
|
|
static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
|
|
{
|
|
return to_gpd_data(dev->power.subsys_data->domain_data);
|
|
}
|
|
|
|
int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev);
|
|
int pm_genpd_remove_device(struct device *dev);
|
|
int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
|
|
struct generic_pm_domain *new_subdomain);
|
|
int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
|
|
struct generic_pm_domain *target);
|
|
int pm_genpd_init(struct generic_pm_domain *genpd,
|
|
struct dev_power_governor *gov, bool is_off);
|
|
int pm_genpd_remove(struct generic_pm_domain *genpd);
|
|
int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state);
|
|
|
|
extern struct dev_power_governor simple_qos_governor;
|
|
extern struct dev_power_governor pm_domain_always_on_gov;
|
|
#else
|
|
|
|
static inline struct generic_pm_domain_data *dev_gpd_data(struct device *dev)
|
|
{
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
|
|
struct device *dev)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline int pm_genpd_remove_device(struct device *dev)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
|
|
struct generic_pm_domain *new_sd)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
|
|
struct generic_pm_domain *target)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline int pm_genpd_init(struct generic_pm_domain *genpd,
|
|
struct dev_power_governor *gov, bool is_off)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
static inline int pm_genpd_remove(struct generic_pm_domain *genpd)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int dev_pm_genpd_set_performance_state(struct device *dev,
|
|
unsigned int state)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
#define simple_qos_governor (*(struct dev_power_governor *)(NULL))
|
|
#define pm_domain_always_on_gov (*(struct dev_power_governor *)(NULL))
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_GENERIC_DOMAINS_SLEEP
|
|
void pm_genpd_syscore_poweroff(struct device *dev);
|
|
void pm_genpd_syscore_poweron(struct device *dev);
|
|
#else
|
|
static inline void pm_genpd_syscore_poweroff(struct device *dev) {}
|
|
static inline void pm_genpd_syscore_poweron(struct device *dev) {}
|
|
#endif
|
|
|
|
/* OF PM domain providers */
|
|
struct of_device_id;
|
|
|
|
typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args,
|
|
void *data);
|
|
|
|
struct genpd_onecell_data {
|
|
struct generic_pm_domain **domains;
|
|
unsigned int num_domains;
|
|
genpd_xlate_t xlate;
|
|
};
|
|
|
|
#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
|
|
int of_genpd_add_provider_simple(struct device_node *np,
|
|
struct generic_pm_domain *genpd);
|
|
int of_genpd_add_provider_onecell(struct device_node *np,
|
|
struct genpd_onecell_data *data);
|
|
void of_genpd_del_provider(struct device_node *np);
|
|
int of_genpd_add_device(struct of_phandle_args *args, struct device *dev);
|
|
int of_genpd_add_subdomain(struct of_phandle_args *parent,
|
|
struct of_phandle_args *new_subdomain);
|
|
struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
|
|
int of_genpd_parse_idle_states(struct device_node *dn,
|
|
struct genpd_power_state **states, int *n);
|
|
unsigned int of_genpd_opp_to_performance_state(struct device *dev,
|
|
struct device_node *np);
|
|
|
|
int genpd_dev_pm_attach(struct device *dev);
|
|
struct device *genpd_dev_pm_attach_by_id(struct device *dev,
|
|
unsigned int index);
|
|
struct device *genpd_dev_pm_attach_by_name(struct device *dev,
|
|
char *name);
|
|
#else /* !CONFIG_PM_GENERIC_DOMAINS_OF */
|
|
static inline int of_genpd_add_provider_simple(struct device_node *np,
|
|
struct generic_pm_domain *genpd)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int of_genpd_add_provider_onecell(struct device_node *np,
|
|
struct genpd_onecell_data *data)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline void of_genpd_del_provider(struct device_node *np) {}
|
|
|
|
static inline int of_genpd_add_device(struct of_phandle_args *args,
|
|
struct device *dev)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int of_genpd_add_subdomain(struct of_phandle_args *parent,
|
|
struct of_phandle_args *new_subdomain)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int of_genpd_parse_idle_states(struct device_node *dn,
|
|
struct genpd_power_state **states, int *n)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline unsigned int
|
|
of_genpd_opp_to_performance_state(struct device *dev,
|
|
struct device_node *np)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int genpd_dev_pm_attach(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct device *genpd_dev_pm_attach_by_id(struct device *dev,
|
|
unsigned int index)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device *genpd_dev_pm_attach_by_name(struct device *dev,
|
|
char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline
|
|
struct generic_pm_domain *of_genpd_remove_last(struct device_node *np)
|
|
{
|
|
return ERR_PTR(-ENOTSUPP);
|
|
}
|
|
#endif /* CONFIG_PM_GENERIC_DOMAINS_OF */
|
|
|
|
#ifdef CONFIG_PM
|
|
int dev_pm_domain_attach(struct device *dev, bool power_on);
|
|
struct device *dev_pm_domain_attach_by_id(struct device *dev,
|
|
unsigned int index);
|
|
struct device *dev_pm_domain_attach_by_name(struct device *dev,
|
|
char *name);
|
|
void dev_pm_domain_detach(struct device *dev, bool power_off);
|
|
void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd);
|
|
#else
|
|
static inline int dev_pm_domain_attach(struct device *dev, bool power_on)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline struct device *dev_pm_domain_attach_by_id(struct device *dev,
|
|
unsigned int index)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline struct device *dev_pm_domain_attach_by_name(struct device *dev,
|
|
char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}
|
|
static inline void dev_pm_domain_set(struct device *dev,
|
|
struct dev_pm_domain *pd) {}
|
|
#endif
|
|
|
|
#endif /* _LINUX_PM_DOMAIN_H */
|