From mboxrd@z Thu Jan 1 00:00:00 1970 From: viresh.kumar@linaro.org (Viresh Kumar) Date: Mon, 27 Jul 2015 10:32:39 +0530 Subject: [PATCH V2 09/11] OPP: Add support for opp-suspend In-Reply-To: References: Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org With "operating-points-v2" bindings, its possible to specify the OPP to which the device must be switched, before suspending. This patch adds support for getting that information. Signed-off-by: Viresh Kumar --- drivers/base/power/opp.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c index d6ab6af7e847..22b1e6ae7a94 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; }; /* @@ -909,6 +910,16 @@ 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; -- 2.4.0