Groups > linux.kernel > #1720121

[PATCH v4 04/10] cpufreq: dt: invoke frequency-invariance setter function

Path	csiph.com!news.redatomik.org!weretis.net!feeder4.news.weretis.net!news.unit0.net!news.panservice.it!bofh.it!news.nic.it!robomod
From	Dietmar Eggemann <dietmar.eggemann@arm.com>
Newsgroups	linux.kernel
Subject	[PATCH v4 04/10] cpufreq: dt: invoke frequency-invariance setter function
Date	Fri, 25 Aug 2017 16:40:02 +0200
Message-ID	<uinWa-5dr-9@gated-at.bofh.it> (permalink)
References	<uinW9-5dr-3@gated-at.bofh.it>
X-Mailer	git-send-email 2.11.0
Sender	robomod@news.nic.it
List-ID	<linux-kernel.vger.kernel.org>
X-Mailing-List	linux-kernel@vger.kernel.org
Approved	robomod@news.nic.it
Lines	38
Organization	linux.* mail to news gateway
X-Original-Cc	linux-pm@vger.kernel.org, linux@arm.linux.org.uk, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Juri Lelli <juri.lelli@arm.com>, Vincent Guittot <vincent.guittot@linaro.org>, Peter Zijlstra <peterz@infradead.org>, Morten Rasmussen <morten.rasmussen@arm.com>, Viresh Kumar <viresh.kumar@linaro.org>, "Rafael J . Wysocki" <rjw@rjwysocki.net>, Sudeep Holla <sudeep.holla@arm.com>
X-Original-Date	Fri, 25 Aug 2017 15:32:00 +0100
X-Original-Message-ID	<20170825143206.30467-5-dietmar.eggemann@arm.com>
X-Original-References	<20170825143206.30467-1-dietmar.eggemann@arm.com>
X-Original-Sender	linux-kernel-owner@vger.kernel.org
Xref	csiph.com linux.kernel:1720121

Show key headers only | View raw

Call the frequency-invariance setter function arch_set_freq_scale()
if the new frequency has been successfully set which is indicated by
dev_pm_opp_set_rate() returning 0.

Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/cpufreq-dt.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index fef3c2160691..cbac8a7dbc50 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -43,9 +43,17 @@ static struct freq_attr *cpufreq_dt_attr[] = {
 static int set_target(struct cpufreq_policy *policy, unsigned int index)
 {
 	struct private_data *priv = policy->driver_data;
+	unsigned long freq = policy->freq_table[index].frequency;
+	int ret;
+
+	ret = dev_pm_opp_set_rate(priv->cpu_dev, freq * 1000);
 
-	return dev_pm_opp_set_rate(priv->cpu_dev,
-				   policy->freq_table[index].frequency * 1000);
+	if (!ret) {
+		arch_set_freq_scale(policy->related_cpus, freq,
+				    policy->cpuinfo.max_freq);
+	}
+
+	return ret;
 }
 
 /*
-- 
2.11.0

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH v4 04/10] cpufreq: dt: invoke frequency-invariance setter function Dietmar Eggemann <dietmar.eggemann@arm.com> - 2017-08-25 16:40 +0200

csiph-web