cpufreq: qcom-hw: invoke frequency-invariance setter function

Add calls to arch_set_freq_scale() in qcom-cpufreq-hw driver to enable
frequency invariance.
Signed-off-by: Douglas RAILLARD <douglas.raillard@arm.com>
Reviewed-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

drivers/cpufreq/qcom-cpufreq-hw.c

@@ -35,9 +35,12 @@ static int qcom_cpufreq_hw_target_index(struct cpufreq_policy *policy,
 					unsigned int index)
 {
 	void __iomem *perf_state_reg = policy->driver_data;
+	unsigned long freq = policy->freq_table[index].frequency;
 
 	writel_relaxed(index, perf_state_reg);
 
+	arch_set_freq_scale(policy->related_cpus, freq,
+			    policy->cpuinfo.max_freq);
 	return 0;
 }
 
@@ -64,6 +67,7 @@ static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
 {
 	void __iomem *perf_state_reg = policy->driver_data;
 	int index;
+	unsigned long freq;
 
 	index = policy->cached_resolved_idx;
 	if (index < 0)
@@ -71,7 +75,11 @@ static unsigned int qcom_cpufreq_hw_fast_switch(struct cpufreq_policy *policy,
 
 	writel_relaxed(index, perf_state_reg);
 
-	return policy->freq_table[index].frequency;
+	freq = policy->freq_table[index].frequency;
+	arch_set_freq_scale(policy->related_cpus, freq,
+			    policy->cpuinfo.max_freq);
+
+	return freq;
 }
 
 static int qcom_cpufreq_hw_read_lut(struct device *cpu_dev,