Commit a1eb080a authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Viresh Kumar
Browse files

cpufreq: qcom-hw: provide online/offline operations 



Provide lightweight online and offline operations. This saves us from
parsing and tearing down the OPP tables each time the CPU is put online
or offline.

Tested-by: default avatarVladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: default avatarVladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 6240aaad

drivers/cpufreq/qcom-cpufreq-hw.c

+26 −2
Original line number Diff line number Diff line
@@ -423,10 +423,26 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index) 
	return 0;

}



static void qcom_cpufreq_hw_lmh_exit(struct qcom_cpufreq_data *data)

static int qcom_cpufreq_hw_cpu_online(struct cpufreq_policy *policy)

{

	struct qcom_cpufreq_data *data = policy->driver_data;

	struct platform_device *pdev = cpufreq_get_driver_data();

	int ret;



	ret = irq_set_affinity_hint(data->throttle_irq, policy->cpus);

	if (ret)

		dev_err(&pdev->dev, "Failed to set CPU affinity of %s[%d]\n",

			data->irq_name, data->throttle_irq);



	return ret;

}



static int qcom_cpufreq_hw_cpu_offline(struct cpufreq_policy *policy)

{

	struct qcom_cpufreq_data *data = policy->driver_data;



	if (data->throttle_irq <= 0)

		return;

		return 0;



	mutex_lock(&data->throttle_lock);

	data->cancel_throttle = true;
@@ -434,6 +450,12 @@ static void qcom_cpufreq_hw_lmh_exit(struct qcom_cpufreq_data *data) 


	cancel_delayed_work_sync(&data->throttle_work);

	irq_set_affinity_hint(data->throttle_irq, NULL);



	return 0;

}



static void qcom_cpufreq_hw_lmh_exit(struct qcom_cpufreq_data *data)

{

	free_irq(data->throttle_irq, data);

}
@@ -590,6 +612,8 @@ static struct cpufreq_driver cpufreq_qcom_hw_driver = { 
	.get		= qcom_cpufreq_hw_get,

	.init		= qcom_cpufreq_hw_cpu_init,

	.exit		= qcom_cpufreq_hw_cpu_exit,

	.online		= qcom_cpufreq_hw_cpu_online,

	.offline	= qcom_cpufreq_hw_cpu_offline,

	.register_em	= cpufreq_register_em_with_opp,

	.fast_switch    = qcom_cpufreq_hw_fast_switch,

	.name		= "qcom-cpufreq-hw",