linux-kernel - [PATCH v2 02/10] cpufreq-dt: Supply power coefficient when registering cooling devices

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Message-Id: <1438615378-14241-3-git-send-email-punit.agrawal@arm.com>
Date:	Mon,  3 Aug 2015 16:22:50 +0100
From:	Punit Agrawal <punit.agrawal@....com>
To:	linux-pm@...r.kernel.org
Cc:	Punit Agrawal <punit.agrawal@....com>, lm-sensors@...sensors.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	liviu.dudau@....com, Eduardo Valentin <edubezval@...il.com>
Subject: [PATCH v2 02/10] cpufreq-dt: Supply power coefficient when registering cooling devices

Support registering cooling devices with dynamic power coefficient
where provided by the device tree. This allows OF registered cooling
devices driver to be used with the power_allocator thermal governor.

Signed-off-by: Punit Agrawal <punit.agrawal@....com>
Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
Cc: Eduardo Valentin <edubezval@...il.com>
---
 drivers/cpufreq/cpufreq-dt.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index 528a82bf..1d1f61a 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -344,8 +344,13 @@ static void cpufreq_ready(struct cpufreq_policy *policy)
 	 * thermal DT code takes care of matching them.
 	 */
 	if (of_find_property(np, "#cooling-cells", NULL)) {
-		priv->cdev = of_cpufreq_cooling_register(np,
-							 policy->related_cpus);
+		u32 power_coefficient = 0;
+
+		of_property_read_u32(np, "dynamic-power-coefficient",
+				     &power_coefficient);
+
+		priv->cdev = of_cpufreq_power_cooling_register(np,
+				policy->related_cpus, power_coefficient, NULL);
 		if (IS_ERR(priv->cdev)) {
 			dev_err(priv->cpu_dev,
 				"running cpufreq without cooling device: %ld\n",
-- 
2.1.4

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