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From:   Douglas RAILLARD <douglas.raillard@arm.com>
To:     linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-pm@vger.kernel.org
Cc:     rjw@rjwysocki.net, viresh.kumar@linaro.org, agross@kernel.org
Subject: [PATCH 1/2] cpufreq: drivers: Enable frequency invariance in qcom-cpufreq-hw
Date:   Thu,  8 Aug 2019 14:18:57 +0100
Message-Id: <20190808131857.21082-1-douglas.raillard@arm.com>
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Sender: linux-kernel-owner@vger.kernel.org
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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>
---
 drivers/cpufreq/qcom-cpufreq-hw.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index 4b0b50403901..3bd3b8b268d9 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c
@@ -34,9 +34,12 @@ 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;
 }
 
@@ -63,6 +66,7 @@ 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)
@@ -70,7 +74,11 @@ 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,
-- 
2.22.0