diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-06-13 15:10:21 +0530 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2015-10-28 11:23:43 +0800 |
| commit | e4b0c3da5c6e99a72fd82cc8fc5ab28b96d66a14 (patch) | |
| tree | 767a41251041a900fb6a975f2a264909f3341158 | |
| parent | 6fdde8fc9f5a7783bcb3354fa304e549a3d5584a (diff) | |
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>
(cherry picked from commit ad656a6a8b1c8b4b2e723646e0402867f2f45395)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
| -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 5d699e3ec136..0ebcea49145a 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; |