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https://github.com/edk2-porting/linux-next.git
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Merge branch 'pm-domains'
* pm-domains: PM / Domains: Fix compilation warning related to genpd_start_dev_no_timing() PM / Domains: Operations related to cpuidle using domain names PM / Domains: Document cpuidle-related functions and change their names PM / Domains: Add power-on function using names to identify domains PM / Domains: Make it possible to use names when adding subdomains PM / Domains: Make it possible to use domain names when adding devices
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commit
079d364b04
@ -53,6 +53,24 @@
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static LIST_HEAD(gpd_list);
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static DEFINE_MUTEX(gpd_list_lock);
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static struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name)
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{
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struct generic_pm_domain *genpd = NULL, *gpd;
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if (IS_ERR_OR_NULL(domain_name))
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return NULL;
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mutex_lock(&gpd_list_lock);
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list_for_each_entry(gpd, &gpd_list, gpd_list_node) {
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if (!strcmp(gpd->name, domain_name)) {
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genpd = gpd;
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break;
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}
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}
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mutex_unlock(&gpd_list_lock);
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return genpd;
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}
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#ifdef CONFIG_PM
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struct generic_pm_domain *dev_to_genpd(struct device *dev)
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@ -75,12 +93,6 @@ static int genpd_start_dev(struct generic_pm_domain *genpd, struct device *dev)
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start_latency_ns, "start");
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}
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static int genpd_start_dev_no_timing(struct generic_pm_domain *genpd,
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struct device *dev)
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{
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return GENPD_DEV_CALLBACK(genpd, int, start, dev);
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}
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static bool genpd_sd_counter_dec(struct generic_pm_domain *genpd)
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{
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bool ret = false;
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@ -262,10 +274,28 @@ int pm_genpd_poweron(struct generic_pm_domain *genpd)
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return ret;
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}
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/**
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* pm_genpd_name_poweron - Restore power to a given PM domain and its masters.
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* @domain_name: Name of the PM domain to power up.
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*/
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int pm_genpd_name_poweron(const char *domain_name)
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{
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struct generic_pm_domain *genpd;
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genpd = pm_genpd_lookup_name(domain_name);
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return genpd ? pm_genpd_poweron(genpd) : -EINVAL;
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}
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#endif /* CONFIG_PM */
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#ifdef CONFIG_PM_RUNTIME
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static int genpd_start_dev_no_timing(struct generic_pm_domain *genpd,
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struct device *dev)
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{
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return GENPD_DEV_CALLBACK(genpd, int, start, dev);
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}
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static int genpd_save_dev(struct generic_pm_domain *genpd, struct device *dev)
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{
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return GENPD_DEV_TIMED_CALLBACK(genpd, int, save_state, dev,
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@ -1465,6 +1495,19 @@ int __pm_genpd_of_add_device(struct device_node *genpd_node, struct device *dev,
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return __pm_genpd_add_device(genpd, dev, td);
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}
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/**
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* __pm_genpd_name_add_device - Find I/O PM domain and add a device to it.
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* @domain_name: Name of the PM domain to add the device to.
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* @dev: Device to be added.
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* @td: Set of PM QoS timing parameters to attach to the device.
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*/
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int __pm_genpd_name_add_device(const char *domain_name, struct device *dev,
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struct gpd_timing_data *td)
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{
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return __pm_genpd_add_device(pm_genpd_lookup_name(domain_name), dev, td);
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}
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/**
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* pm_genpd_remove_device - Remove a device from an I/O PM domain.
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* @genpd: PM domain to remove the device from.
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@ -1557,7 +1600,8 @@ int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
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struct gpd_link *link;
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int ret = 0;
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if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(subdomain))
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if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(subdomain)
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|| genpd == subdomain)
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return -EINVAL;
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start:
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@ -1603,6 +1647,35 @@ int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
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return ret;
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}
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/**
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* pm_genpd_add_subdomain_names - Add a subdomain to an I/O PM domain.
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* @master_name: Name of the master PM domain to add the subdomain to.
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* @subdomain_name: Name of the subdomain to be added.
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*/
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int pm_genpd_add_subdomain_names(const char *master_name,
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const char *subdomain_name)
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{
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struct generic_pm_domain *master = NULL, *subdomain = NULL, *gpd;
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if (IS_ERR_OR_NULL(master_name) || IS_ERR_OR_NULL(subdomain_name))
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return -EINVAL;
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mutex_lock(&gpd_list_lock);
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list_for_each_entry(gpd, &gpd_list, gpd_list_node) {
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if (!master && !strcmp(gpd->name, master_name))
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master = gpd;
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if (!subdomain && !strcmp(gpd->name, subdomain_name))
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subdomain = gpd;
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if (master && subdomain)
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break;
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}
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mutex_unlock(&gpd_list_lock);
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return pm_genpd_add_subdomain(master, subdomain);
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}
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/**
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* pm_genpd_remove_subdomain - Remove a subdomain from an I/O PM domain.
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* @genpd: Master PM domain to remove the subdomain from.
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@ -1756,7 +1829,16 @@ int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
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}
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EXPORT_SYMBOL_GPL(__pm_genpd_remove_callbacks);
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int genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
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/**
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* pm_genpd_attach_cpuidle - Connect the given PM domain with cpuidle.
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* @genpd: PM domain to be connected with cpuidle.
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* @state: cpuidle state this domain can disable/enable.
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*
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* Make a PM domain behave as though it contained a CPU core, that is, instead
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* of calling its power down routine it will enable the given cpuidle state so
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* that the cpuidle subsystem can power it down (if possible and desirable).
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*/
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int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
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{
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struct cpuidle_driver *cpuidle_drv;
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struct gpd_cpu_data *cpu_data;
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@ -1805,7 +1887,24 @@ int genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
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goto out;
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}
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int genpd_detach_cpuidle(struct generic_pm_domain *genpd)
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/**
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* pm_genpd_name_attach_cpuidle - Find PM domain and connect cpuidle to it.
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* @name: Name of the domain to connect to cpuidle.
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* @state: cpuidle state this domain can manipulate.
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*/
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int pm_genpd_name_attach_cpuidle(const char *name, int state)
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{
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return pm_genpd_attach_cpuidle(pm_genpd_lookup_name(name), state);
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}
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/**
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* pm_genpd_detach_cpuidle - Remove the cpuidle connection from a PM domain.
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* @genpd: PM domain to remove the cpuidle connection from.
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*
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* Remove the cpuidle connection set up by pm_genpd_attach_cpuidle() from the
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* given PM domain.
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*/
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int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
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{
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struct gpd_cpu_data *cpu_data;
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struct cpuidle_state *idle_state;
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@ -1836,6 +1935,15 @@ int genpd_detach_cpuidle(struct generic_pm_domain *genpd)
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return ret;
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}
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/**
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* pm_genpd_name_detach_cpuidle - Find PM domain and disconnect cpuidle from it.
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* @name: Name of the domain to disconnect cpuidle from.
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*/
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int pm_genpd_name_detach_cpuidle(const char *name)
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{
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return pm_genpd_detach_cpuidle(pm_genpd_lookup_name(name));
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}
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/* Default device callbacks for generic PM domains. */
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/**
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@ -138,35 +138,32 @@ extern int __pm_genpd_of_add_device(struct device_node *genpd_node,
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struct device *dev,
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struct gpd_timing_data *td);
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static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
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struct device *dev)
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{
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return __pm_genpd_add_device(genpd, dev, NULL);
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}
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static inline int pm_genpd_of_add_device(struct device_node *genpd_node,
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struct device *dev)
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{
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return __pm_genpd_of_add_device(genpd_node, dev, NULL);
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}
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extern int __pm_genpd_name_add_device(const char *domain_name,
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struct device *dev,
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struct gpd_timing_data *td);
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extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
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struct device *dev);
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extern void pm_genpd_dev_need_restore(struct device *dev, bool val);
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extern int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
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struct generic_pm_domain *new_subdomain);
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extern int pm_genpd_add_subdomain_names(const char *master_name,
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const char *subdomain_name);
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extern int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
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struct generic_pm_domain *target);
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extern int pm_genpd_add_callbacks(struct device *dev,
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struct gpd_dev_ops *ops,
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struct gpd_timing_data *td);
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extern int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td);
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extern int genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state);
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extern int genpd_detach_cpuidle(struct generic_pm_domain *genpd);
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extern int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state);
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extern int pm_genpd_name_attach_cpuidle(const char *name, int state);
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extern int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd);
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extern int pm_genpd_name_detach_cpuidle(const char *name);
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extern void pm_genpd_init(struct generic_pm_domain *genpd,
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struct dev_power_governor *gov, bool is_off);
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extern int pm_genpd_poweron(struct generic_pm_domain *genpd);
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extern int pm_genpd_name_poweron(const char *domain_name);
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extern bool default_stop_ok(struct device *dev);
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@ -187,8 +184,15 @@ static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
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{
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return -ENOSYS;
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}
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static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
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struct device *dev)
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static inline int __pm_genpd_of_add_device(struct device_node *genpd_node,
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struct device *dev,
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struct gpd_timing_data *td)
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{
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return -ENOSYS;
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}
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static inline int __pm_genpd_name_add_device(const char *domain_name,
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struct device *dev,
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struct gpd_timing_data *td)
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{
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return -ENOSYS;
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}
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@ -203,6 +207,11 @@ static inline int pm_genpd_add_subdomain(struct generic_pm_domain *genpd,
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{
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return -ENOSYS;
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}
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static inline int pm_genpd_add_subdomain_names(const char *master_name,
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const char *subdomain_name)
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{
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return -ENOSYS;
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}
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static inline int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
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struct generic_pm_domain *target)
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{
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@ -218,11 +227,19 @@ static inline int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
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{
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return -ENOSYS;
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}
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static inline int genpd_attach_cpuidle(struct generic_pm_domain *genpd, int st)
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static inline int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int st)
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{
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return -ENOSYS;
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}
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static inline int genpd_detach_cpuidle(struct generic_pm_domain *genpd)
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static inline int pm_genpd_name_attach_cpuidle(const char *name, int state)
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{
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return -ENOSYS;
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}
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static inline int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
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{
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return -ENOSYS;
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}
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static inline int pm_genpd_name_detach_cpuidle(const char *name)
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{
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return -ENOSYS;
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}
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@ -234,6 +251,10 @@ static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)
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{
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return -ENOSYS;
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}
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static inline int pm_genpd_name_poweron(const char *domain_name)
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{
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return -ENOSYS;
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}
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static inline bool default_stop_ok(struct device *dev)
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{
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return false;
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@ -242,6 +263,24 @@ static inline bool default_stop_ok(struct device *dev)
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#define pm_domain_always_on_gov NULL
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#endif
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static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
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struct device *dev)
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{
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return __pm_genpd_add_device(genpd, dev, NULL);
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}
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static inline int pm_genpd_of_add_device(struct device_node *genpd_node,
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struct device *dev)
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{
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return __pm_genpd_of_add_device(genpd_node, dev, NULL);
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}
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static inline int pm_genpd_name_add_device(const char *domain_name,
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struct device *dev)
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{
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return __pm_genpd_name_add_device(domain_name, dev, NULL);
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}
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static inline int pm_genpd_remove_callbacks(struct device *dev)
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{
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return __pm_genpd_remove_callbacks(dev, true);
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