diff options
| 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 | |
| parent | cea8e2f3938c510f6041c632fe19e4e95296ae04 (diff) | |
| download | linux-5b93ac542301026eff8954589cf59f801d03db3e.tar.bz2 | |
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')
| -rw-r--r-- | drivers/opp/core.c | 18 | ||||
| -rw-r--r-- | drivers/opp/of.c | 2 | ||||
| -rw-r--r-- | drivers/opp/opp.h | 2 |
3 files changed, 22 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 * diff --git a/drivers/opp/of.c b/drivers/opp/of.c index 06f0f632ec47..1779f2c93291 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -594,6 +594,8 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table, new_opp->rate = (unsigned long)rate; } + of_property_read_u32(np, "opp-level", &new_opp->level); + /* Check if the OPP supports hardware's hierarchy of versions or not */ if (!_opp_is_supported(dev, opp_table, np)) { dev_dbg(dev, "OPP not supported by hardware: %llu\n", rate); diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index e24d81497375..4458175aa661 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -60,6 +60,7 @@ extern struct list_head opp_tables; * @suspend: true if suspend OPP * @pstate: Device's power domain's performance state. * @rate: Frequency in hertz + * @level: Performance level * @supplies: Power supplies voltage/current values * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's * frequency from any other OPP's frequency. @@ -80,6 +81,7 @@ struct dev_pm_opp { bool suspend; unsigned int pstate; unsigned long rate; + unsigned int level; struct dev_pm_opp_supply *supplies; |