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opp: Add devm_pm_opp_attach_genpd

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Add resource-managed version of dev_pm_opp_attach_genpd().

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
[ Viresh: Manually apply the patch and relocate the routines ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Dmitry Osipenko 2021-01-18 03:55:21 +03:00 committed by Viresh Kumar
parent a3c47af694
commit b4b9e223ec
2 changed files with 43 additions and 0 deletions
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36
drivers/opp/core.c
View File

@ -2275,6 +2275,42 @@ void dev_pm_opp_detach_genpd(struct opp_table *opp_table)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_detach_genpd);
static void devm_pm_opp_detach_genpd(void *data)
{
dev_pm_opp_detach_genpd(data);
}
/**
* devm_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual
* device pointer
* @dev: Consumer device for which the genpd is getting attached.
* @names: Null terminated array of pointers containing names of genpd to attach.
* @virt_devs: Pointer to return the array of virtual devices.
*
* This is a resource-managed version of dev_pm_opp_attach_genpd().
*
* Return: pointer to 'struct opp_table' on success and errorno otherwise.
*/
struct opp_table *
devm_pm_opp_attach_genpd(struct device *dev, const char **names,
struct device ***virt_devs)
{
struct opp_table *opp_table;
int err;
opp_table = dev_pm_opp_attach_genpd(dev, names, virt_devs);
if (IS_ERR(opp_table))
return opp_table;
err = devm_add_action_or_reset(dev, devm_pm_opp_detach_genpd,
opp_table);
if (err)
return ERR_PTR(err);
return opp_table;
}
EXPORT_SYMBOL_GPL(devm_pm_opp_attach_genpd);
/**
* dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.
* @src_table: OPP table which has dst_table as one of its required OPP table.

7
include/linux/pm_opp.h
View File

@ -155,6 +155,7 @@ void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
struct opp_table *devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
struct opp_table *devm_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp);
@ -360,6 +361,12 @@ static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, cons
static inline void dev_pm_opp_detach_genpd(struct opp_table *opp_table) {}
static inline struct opp_table *devm_pm_opp_attach_genpd(struct device *dev,
const char **names, struct device ***virt_devs)
{
return ERR_PTR(-ENOTSUPP);
}
static inline int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate)
{
return -ENOTSUPP;