Commit 263abfe7 authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki
Browse files

cpufreq: dt: Implement online/offline() callbacks 



Implement the light-weight tear down and bring up helpers to reduce the
amount of work to do on CPU offline/online operation.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 91a12e91

drivers/cpufreq/cpufreq-dt.c

+17 −0
Original line number Diff line number Diff line
@@ -295,6 +295,21 @@ static int cpufreq_init(struct cpufreq_policy *policy) 
	return ret;

}



static int cpufreq_online(struct cpufreq_policy *policy)

{

	/* We did light-weight tear down earlier, nothing to do here */

	return 0;

}



static int cpufreq_offline(struct cpufreq_policy *policy)

{

	/*

	 * Preserve policy->driver_data and don't free resources on light-weight

	 * tear down.

	 */

	return 0;

}



static int cpufreq_exit(struct cpufreq_policy *policy)

{

	struct private_data *priv = policy->driver_data;
@@ -319,6 +334,8 @@ static struct cpufreq_driver dt_cpufreq_driver = { 
	.get = cpufreq_generic_get,

	.init = cpufreq_init,

	.exit = cpufreq_exit,

	.online = cpufreq_online,

	.offline = cpufreq_offline,

	.name = "cpufreq-dt",

	.attr = cpufreq_dt_attr,

	.suspend = cpufreq_generic_suspend,