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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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