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OPP: Introduce dev_pm_opp_find_freq_ceil_by_volt()

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This patch introduces a new helper routine in the OPP core, which
returns the OPP with the highest frequency which has voltage less than
or equal to the target voltage passed to the helper.

Signed-off-by: Andrew-sh.Cheng <andrew-sh.cheng@mediatek.com>
[ Viresh: Massaged the commit log and renamed the helper with some
cleanups. ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Andrew-sh.Cheng
2019-03-29 14:46:10 +08:00
committed by Viresh Kumar
parent 9e98c678c2
commit 2f36bde0fc
2 changed files with 62 additions and 0 deletions
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8
include/linux/pm_opp.h
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@@ -102,6 +102,8 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
unsigned long *freq);
struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
unsigned long u_volt);
struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
unsigned long *freq);
@@ -207,6 +209,12 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
return ERR_PTR(-ENOTSUPP);
}
static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
unsigned long u_volt)
{
return ERR_PTR(-ENOTSUPP);
}
static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
unsigned long *freq)
{