Commit ad656a6a authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki

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: default avatarStephen Boyd <sboyd@codeaurora.org>
Reviewed-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 06441658
...@@ -133,6 +133,7 @@ struct device_opp { ...@@ -133,6 +133,7 @@ struct device_opp {
struct device_node *np; struct device_node *np;
unsigned long clock_latency_ns_max; unsigned long clock_latency_ns_max;
bool shared_opp; 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) ...@@ -923,6 +924,16 @@ static int _opp_add_static_v2(struct device *dev, struct device_node *np)
if (ret) if (ret)
goto free_opp; 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) if (new_opp->clock_latency_ns > dev_opp->clock_latency_ns_max)
dev_opp->clock_latency_ns_max = new_opp->clock_latency_ns; dev_opp->clock_latency_ns_max = new_opp->clock_latency_ns;
......
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