From: Thierry Reding <treding@xxxxxxxxxx>
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: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/base/power/domain.c | 8 ++++----
include/linux/pm_domain.h | 4 ++++
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index e697dec9d25b..c102557f6c7e 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1570,9 +1570,6 @@ 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.
*
@@ -1730,6 +1727,9 @@ 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;
@@ -1740,7 +1740,7 @@ 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;
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 5339ed5bd6f9..5163f371a308 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -204,9 +204,13 @@ 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
--
2.12.0
--
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