diff options
author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-06-13 09:40:21 (GMT) |
---|---|---|
committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-08-07 01:06:15 (GMT) |
commit | ad656a6a8b1c8b4b2e723646e0402867f2f45395 (patch) | |
tree | 1921c832e5b9f4698b5dbbcbe62006021cb1c07f | |
parent | 064416586190cb058d4c76a4e26b1996f434b6ca (diff) | |
download | linux-ad656a6a8b1c8b4b2e723646e0402867f2f45395.tar.xz |
PM / OPP: Add support for opp-suspend
With "operating-points-v2" bindings, it's possible to specify the OPP to
which the device must be switched, before suspending.
This patch adds support for getting that information.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r-- | drivers/base/power/opp.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c index 5d699e3..0ebcea4 100644 --- a/drivers/base/power/opp.c +++ b/drivers/base/power/opp.c @@ -133,6 +133,7 @@ struct device_opp { struct device_node *np; unsigned long clock_latency_ns_max; bool shared_opp; + struct dev_pm_opp *suspend_opp; }; /* @@ -923,6 +924,16 @@ static int _opp_add_static_v2(struct device *dev, struct device_node *np) if (ret) goto free_opp; + /* OPP to select on device suspend */ + if (of_property_read_bool(np, "opp-suspend")) { + if (dev_opp->suspend_opp) + dev_warn(dev, "%s: Multiple suspend OPPs found (%lu %lu)\n", + __func__, dev_opp->suspend_opp->rate, + new_opp->rate); + else + dev_opp->suspend_opp = new_opp; + } + if (new_opp->clock_latency_ns > dev_opp->clock_latency_ns_max) dev_opp->clock_latency_ns_max = new_opp->clock_latency_ns; |