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Commit 40845524 authored by Thierry Reding's avatar Thierry Reding
Browse files

PM / Domains: Allow overriding the ->xlate() callback 



Allow generic power domain providers to override the ->xlate() callback
in case the default genpd_xlate_onecell() translation callback is not
good enough.

One potential use-case for this is to allow generic power domains to be
specified by an ID rather than an index.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Acked-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 2ea659a9

drivers/base/power/domain.c

+4 −4
Original line number Diff line number Diff line
@@ -1584,9 +1584,6 @@ EXPORT_SYMBOL_GPL(pm_genpd_remove); 


#ifdef CONFIG_PM_GENERIC_DOMAINS_OF



typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args,

						   void *data);



/*

 * Device Tree based PM domain providers.

 *
@@ -1742,6 +1739,9 @@ int of_genpd_add_provider_onecell(struct device_node *np, 


	mutex_lock(&gpd_list_lock);



	if (!data->xlate)

		data->xlate = genpd_xlate_onecell;



	for (i = 0; i < data->num_domains; i++) {

		if (!data->domains[i])

			continue;
@@ -1752,7 +1752,7 @@ int of_genpd_add_provider_onecell(struct device_node *np, 
		data->domains[i]->has_provider = true;

	}



	ret = genpd_add_provider(np, genpd_xlate_onecell, data);

	ret = genpd_add_provider(np, data->xlate, data);

	if (ret < 0)

		goto error;

include/linux/pm_domain.h

+4 −0
Original line number Diff line number Diff line
@@ -206,9 +206,13 @@ static inline void pm_genpd_syscore_poweron(struct device *dev) {} 
/* 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