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| author | Rajendra Nayak <rnayak@codeaurora.org> | 2019-01-10 09:32:02 +0530 |
|---|---|---|
| committer | Andy Gross <andy.gross@linaro.org> | 2019-01-22 15:06:11 -0600 |
| commit | 5b93ac542301026eff8954589cf59f801d03db3e (patch) | |
| tree | 281b92c16dd14af7f10be2edbafb2a6bf42017f9 /drivers/opp/core.c | |
| parent | cea8e2f3938c510f6041c632fe19e4e95296ae04 (diff) | |
| download | linux-stable-5b93ac542301026eff8954589cf59f801d03db3e.tar.gz linux-stable-5b93ac542301026eff8954589cf59f801d03db3e.tar.bz2 linux-stable-5b93ac542301026eff8954589cf59f801d03db3e.zip | |
OPP: Add support for parsing the 'opp-level' property
Now that the OPP bindings are updated to include an optional
'opp-level' property, add support to parse it from device tree
and store it as part of dev_pm_opp structure.
Also add and export an helper 'dev_pm_opp_get_level()' that can be
used to get the level value read from device tree when present.
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Diffstat (limited to 'drivers/opp/core.c')
| -rw-r--r-- | drivers/opp/core.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index e5507add8f04..90b78a122be9 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -131,6 +131,24 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq); /** + * dev_pm_opp_get_level() - Gets the level corresponding to an available opp + * @opp: opp for which level value has to be returned for + * + * Return: level read from device tree corresponding to the opp, else + * return 0. + */ +unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) +{ + if (IS_ERR_OR_NULL(opp) || !opp->available) { + pr_err("%s: Invalid parameters\n", __func__); + return 0; + } + + return opp->level; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_get_level); + +/** * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not * @opp: opp for which turbo mode is being verified * |