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Commit 1c69cb11 authored by Ram Chandrasekar's avatar Ram Chandrasekar Committed by Gerrit - the friendly Code Review server
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cpufreq: qcom-hw: Add ready callback to register CPU cooling device 



Add a ready callback, which will be called when a CPU policy is ready.
As a part of this callback, register the corresponding CPU cooling
device.

Change-Id: Ic12e0a8f7cd13fda583844454e3a0eb600a2cad3
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent fa35c292

drivers/cpufreq/qcom-cpufreq-hw.c

+31 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <linux/pm_opp.h>

#include <linux/energy_model.h>

#include <linux/sched.h>

#include <linux/cpu_cooling.h>



#define LUT_MAX_ENTRIES			40U

#define CORE_COUNT_VAL(val)		(((val) & (GENMASK(18, 16))) >> 16)
@@ -178,6 +179,35 @@ static struct freq_attr *qcom_cpufreq_hw_attr[] = { 
	NULL

};



static void qcom_cpufreq_ready(struct cpufreq_policy *policy)

{

	static struct thermal_cooling_device *cdev[NR_CPUS];

	struct device_node *np;

	unsigned int cpu = policy->cpu;



	if (cdev[cpu])

		return;



	np = of_cpu_device_node_get(cpu);

	if (WARN_ON(!np))

		return;



	/*

	 * For now, just loading the cooling device;

	 * thermal DT code takes care of matching them.

	 */

	if (of_find_property(np, "#cooling-cells", NULL)) {

		cdev[cpu] = of_cpufreq_cooling_register(policy);

		if (IS_ERR(cdev[cpu])) {

			pr_err("running cpufreq for CPU%d without cooling dev: %ld\n",

			       cpu, PTR_ERR(cdev[cpu]));

			cdev[cpu] = NULL;

		}

	}



	of_node_put(np);

}



static struct cpufreq_driver cpufreq_qcom_hw_driver = {

	.flags		= CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK |

			  CPUFREQ_HAVE_GOVERNOR_PER_POLICY,
@@ -189,6 +219,7 @@ static struct cpufreq_driver cpufreq_qcom_hw_driver = { 
	.name		= "qcom-cpufreq-hw",

	.attr		= qcom_cpufreq_hw_attr,

	.boost_enabled	= true,

	.ready		= qcom_cpufreq_ready,

};



static int qcom_cpufreq_hw_read_lut(struct platform_device *pdev,