The "operating-points-v2" property can contain a list of phandles now, specifically for the power domain providers that provide multiple domains.
Add support to parse that.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- drivers/base/power/opp/of.c | 50 +++++++++++++++++++++++++++++++++++++++------ include/linux/pm_opp.h | 6 ++++++ 2 files changed, 50 insertions(+), 6 deletions(-)
diff --git a/drivers/base/power/opp/of.c b/drivers/base/power/opp/of.c index 77693ba3ed55..9cdf3a848e69 100644 --- a/drivers/base/power/opp/of.c +++ b/drivers/base/power/opp/of.c @@ -243,14 +243,17 @@ void dev_pm_opp_of_remove_table(struct device *dev) EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
/* Returns opp descriptor node for a device, caller must do of_node_put() */ -struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev) +static struct device_node *_of_get_opp_desc_node_indexed(struct device *dev, + int index) { - /* - * There should be only ONE phandle present in "operating-points-v2" - * property. - */ + /* "operating-points-v2" can be an array for power domain providers */ + return of_parse_phandle(dev->of_node, "operating-points-v2", index); +}
- return of_parse_phandle(dev->of_node, "operating-points-v2", 0); +/* Returns opp descriptor node for a device, caller must do of_node_put() */ +struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev) +{ + return _of_get_opp_desc_node_indexed(dev, 0); } EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_opp_desc_node);
@@ -572,6 +575,41 @@ int dev_pm_opp_of_add_table(struct device *dev) } EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
+/** + * dev_pm_opp_of_add_table_indexed() - Initialize indexed opp table from device tree + * @dev: device pointer used to lookup OPP table. + * @index: Index number. + * + * Register the initial OPP table with the OPP library for given device only + * using the "operating-points-v2" property. + * + * Return: + * 0 On success OR + * Duplicate OPPs (both freq and volt are same) and opp->available + * -EEXIST Freq are same and volt are different OR + * Duplicate OPPs (both freq and volt are same) and !opp->available + * -ENOMEM Memory allocation failure + * -ENODEV when 'operating-points' property is not found or is invalid data + * in device node. + * -ENODATA when empty 'operating-points' property is found + * -EINVAL when invalid entries are found in opp-v2 table + */ +int dev_pm_opp_of_add_table_indexed(struct device *dev, int index) +{ + struct device_node *opp_np; + int ret; + + opp_np = _of_get_opp_desc_node_indexed(dev, index); + if (!opp_np) + return -ENODEV; + + ret = _of_add_opp_table_v2(dev, opp_np); + of_node_put(opp_np); + + return ret; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_indexed); + /* CPU device specific helpers */
/** diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index a6685b3dde26..8263d831715c 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -284,6 +284,7 @@ static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask
#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) int dev_pm_opp_of_add_table(struct device *dev); +int dev_pm_opp_of_add_table_indexed(struct device *dev, int index); void dev_pm_opp_of_remove_table(struct device *dev); int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask); void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask); @@ -295,6 +296,11 @@ static inline int dev_pm_opp_of_add_table(struct device *dev) return -ENOTSUPP; }
+static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index) +{ + return -ENOTSUPP; +} + static inline void dev_pm_opp_of_remove_table(struct device *dev) { }