diff options
| author | Sibi Sankar | 2020-06-06 03:03:30 +0530 |
|---|---|---|
| committer | Viresh Kumar | 2020-07-30 10:42:15 +0530 |
| commit | 3ae1f39aef08c5c584b0d0ce2186273be3f14d16 (patch) | |
| tree | a33abd3c87bcee2a69311536a6cfcbdd77b2b7e2 | |
| parent | fb091802d793e87b4ed7f83c94e29aadb7fe58b7 (diff) | |
OPP: Add and export helper to set bandwidth
Add and export 'dev_pm_opp_set_bw' to set the bandwidth
levels associated with an OPP.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
| -rw-r--r-- | drivers/opp/core.c | 31 | ||||
| -rw-r--r-- | include/linux/pm_opp.h | 6 |
2 files changed, 37 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index dfbd3d10410c..6937bf45f497 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -832,6 +832,37 @@ static int _set_required_opps(struct device *dev, } /** + * dev_pm_opp_set_bw() - sets bandwidth levels corresponding to an opp + * @dev: device for which we do this operation + * @opp: opp based on which the bandwidth levels are to be configured + * + * This configures the bandwidth to the levels specified by the OPP. However + * if the OPP specified is NULL the bandwidth levels are cleared out. + * + * Return: 0 on success or a negative error value. + */ +int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp) +{ + struct opp_table *opp_table; + int ret; + + opp_table = _find_opp_table(dev); + if (IS_ERR(opp_table)) { + dev_err(dev, "%s: device opp table doesn't exist\n", __func__); + return PTR_ERR(opp_table); + } + + if (opp) + ret = _set_opp_bw(opp_table, opp, dev, false); + else + ret = _set_opp_bw(opp_table, NULL, dev, true); + + dev_pm_opp_put_opp_table(opp_table); + return ret; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_set_bw); + +/** * dev_pm_opp_set_rate() - Configure new OPP based on frequency * @dev: device for which we do this operation * @target_freq: frequency to achieve diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index d5c4a329321d..ae68417c0ae0 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -151,6 +151,7 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names void dev_pm_opp_detach_genpd(struct opp_table *opp_table); 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); int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask); int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); void dev_pm_opp_remove_table(struct device *dev); @@ -342,6 +343,11 @@ static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_f return -ENOTSUPP; } +static inline int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp) +{ + return -EOPNOTSUPP; +} + static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask) { return -ENOTSUPP; |