linux-kernel - [PATCH v4 2/3] cpufreq-dt: Supply power coefficient when registering cooling devices

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Message-Id: <1447702225-13323-3-git-send-email-punit.agrawal@arm.com>
Date:	Mon, 16 Nov 2015 19:30:24 +0000
From:	Punit Agrawal <punit.agrawal@....com>
To:	devicetree@...r.kernel.org
Cc:	Punit Agrawal <punit.agrawal@....com>, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, edubezval@...il.com,
	dawei.chien@...iatek.com, javi.merino@....com
Subject: [PATCH v4 2/3] 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>
Reviewed-by: Javi Merino <javi.merino@....com>
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 90d6408..1ceece9 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -407,8 +407,13 @@ 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",
-- 
2.6.2

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