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Subject[PATCH v2 8/8] PM / devfreq: exynos-bus: Register cooling device
Date
This patch registers the Exynos Bus-Frequency scaling device
as a cooling device of thermal management.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
drivers/devfreq/Kconfig | 1 +
drivers/devfreq/exynos-bus.c | 11 +++++++++++
2 files changed, 12 insertions(+)

diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig
index 6a172d338f6d..eb8128e08b2c 100644
--- a/drivers/devfreq/Kconfig
+++ b/drivers/devfreq/Kconfig
@@ -81,6 +81,7 @@ config ARM_EXYNOS_BUS_DEVFREQ
select DEVFREQ_GOV_SIMPLE_ONDEMAND
select DEVFREQ_GOV_PASSIVE
select DEVFREQ_EVENT_EXYNOS_PPMU
+ select DEVFREQ_THERMAL
select PM_DEVFREQ_EVENT
select PM_OPP
help
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index c25658b26598..200ca0d11834 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -15,6 +15,7 @@
#include <linux/clk.h>
#include <linux/devfreq.h>
#include <linux/devfreq-event.h>
+#include <linux/devfreq_cooling.h>
#include <linux/device.h>
#include <linux/export.h>
#include <linux/module.h>
@@ -41,6 +42,8 @@ struct exynos_bus {
struct clk *clk;
unsigned int voltage_tolerance;
unsigned int ratio;
+
+ struct thermal_cooling_device *cdev;
};

/*
@@ -468,6 +471,14 @@ static int exynos_bus_probe(struct platform_device *pdev)
goto err;
}

+ /* Register devfreq cooling device */
+ bus->cdev = of_devfreq_cooling_register(np, bus->devfreq);
+ if (IS_ERR(bus->cdev) < 0) {
+ dev_err(dev, "failed to register cooling device\n");
+ ret = PTR_ERR(bus->cdev);
+ goto err;
+ }
+
goto out;
passive:
/* Initialize the struct profile and governor data for passive device */
--
1.9.1
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