Commit c4c0efb0 authored by Xuewen Yan's avatar Xuewen Yan Committed by Viresh Kumar

cpufreq: qcom-cpufreq-hw: Add cpufreq qos for LMh

Before update thermal pressure, the max cpufreq should be limited.
Add QOS control for Lmh throttle cpufreq.
Signed-off-by: default avatarXuewen Yan <xuewen.yan@unisoc.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent f7968c22
......@@ -13,6 +13,7 @@
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_opp.h>
#include <linux/pm_qos.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/units.h>
......@@ -56,6 +57,8 @@ struct qcom_cpufreq_data {
struct cpufreq_policy *policy;
bool per_core_dcvs;
struct freq_qos_request throttle_freq_req;
};
static unsigned long cpu_hw_rate, xo_rate;
......@@ -321,6 +324,8 @@ static void qcom_lmh_dcvs_notify(struct qcom_cpufreq_data *data)
throttled_freq = freq_hz / HZ_PER_KHZ;
freq_qos_update_request(&data->throttle_freq_req, throttled_freq);
/* Update thermal pressure (the boost frequencies are accepted) */
arch_update_thermal_pressure(policy->related_cpus, throttled_freq);
......@@ -413,6 +418,14 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index)
if (data->throttle_irq < 0)
return data->throttle_irq;
ret = freq_qos_add_request(&policy->constraints,
&data->throttle_freq_req, FREQ_QOS_MAX,
FREQ_QOS_MAX_DEFAULT_VALUE);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to add freq constraint (%d)\n", ret);
return ret;
}
data->cancel_throttle = false;
data->policy = policy;
......@@ -479,6 +492,7 @@ static void qcom_cpufreq_hw_lmh_exit(struct qcom_cpufreq_data *data)
if (data->throttle_irq <= 0)
return;
freq_qos_remove_request(&data->throttle_freq_req);
free_irq(data->throttle_irq, data);
}
......
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