Dear all,
Please ignore this patch. It has some problem.
I'll fix and resend this patch on v2.
Chanwoo Choi
Samsung Electronics
On 2017년 09월 21일 09:33, Chanwoo Choi wrote:
> This patch registers the Exynos Bus-Frequency scaling device
> as a cooling device of thermal management.
>
> Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> Cc: Kukjin Kim <kgene@xxxxxxxxxx>
> Cc: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> Cc: linux-samsung-soc@xxxxxxxxxxxxxxx
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
> 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 */
>
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