From: Zhang Rui <rui.zhang@intel.com>
To: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Cc: linux-pm@lists.linux-foundation.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
durgadoss.r@intel.com, lenb@kernel.org,
linux-acpi@vger.kernel.org, jonghwa3.lee@samsung.com
Subject: Re: [PATCH 1/4] thermal: Add new thermal trend type to support quick cooling
Date: Thu, 22 Nov 2012 09:22:04 +0800 [thread overview]
Message-ID: <1353547324.2172.1.camel@rzhang1-mobl4> (raw)
In-Reply-To: <1352348786-24255-2-git-send-email-amit.kachhap@linaro.org>
On Thu, 2012-11-08 at 09:56 +0530, Amit Daniel Kachhap wrote:
> This modification adds 2 new thermal trend type THERMAL_TREND_RAISE_FULL
> and THERMAL_TREND_DROP_FULL. This thermal trend can be used to quickly
> jump to the upper or lower cooling level instead of incremental increase
> or decrease. This is needed for temperature sensors which support rising/falling
> threshold interrupts and polling can be totally avoided.
>
> Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
> Signed-off-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
> ---
> drivers/thermal/step_wise.c | 19 +++++++++++++++----
> include/linux/thermal.h | 2 ++
> 2 files changed, 17 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c
> index 1242cff..0d2d8d6 100644
> --- a/drivers/thermal/step_wise.c
> +++ b/drivers/thermal/step_wise.c
> @@ -35,6 +35,10 @@
> * state for this trip point
> * b. if the trend is THERMAL_TREND_DROPPING, use lower cooling
> * state for this trip point
> + * c. if the trend is THERMAL_TREND_RAISE_FULL, use highest cooling
> + * state for this trip point
> + * d. if the trend is THERMAL_TREND_DROP_FULL, use lowest cooling
> + * state for this trip point
> */
> static unsigned long get_target_state(struct thermal_instance *instance,
> enum thermal_trend trend)
> @@ -50,7 +54,10 @@ static unsigned long get_target_state(struct thermal_instance *instance,
> } else if (trend == THERMAL_TREND_DROPPING) {
> cur_state = cur_state > instance->lower ?
> (cur_state - 1) : instance->lower;
> - }
> + } else if (trend == THERMAL_TREND_RAISE_FULL)
> + cur_state = instance->upper;
> + else if (trend == THERMAL_TREND_DROP_FULL)
> + cur_state = instance->lower;
>
> return cur_state;
> }
> @@ -87,7 +94,8 @@ static void update_instance_for_throttle(struct thermal_zone_device *tz,
> }
>
> static void update_instance_for_dethrottle(struct thermal_zone_device *tz,
> - int trip, enum thermal_trip_type trip_type)
> + int trip, enum thermal_trip_type trip_type,
> + enum thermal_trend trend)
> {
> struct thermal_instance *instance;
> struct thermal_cooling_device *cdev;
> @@ -101,7 +109,10 @@ static void update_instance_for_dethrottle(struct thermal_zone_device *tz,
> cdev = instance->cdev;
> cdev->ops->get_cur_state(cdev, &cur_state);
>
> - instance->target = cur_state > instance->lower ?
> + if (trend == THERMAL_TREND_DROP_FULL)
> + instance->target = instance->lower;
> + else
> + instance->target = cur_state > instance->lower ?
> (cur_state - 1) : THERMAL_NO_TARGET;
>
what do you expect to happen if the trend is THERMAL_TREND_RAISE_FULL at
this time?
thanks,
rui
next prev parent reply other threads:[~2012-11-22 18:47 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-08 4:26 [PATCH 0/4] thermal: Add support for interrupt based notification to thermal layer Amit Daniel Kachhap
2012-11-08 4:26 ` [PATCH 1/4] thermal: Add new thermal trend type to support quick cooling Amit Daniel Kachhap
2012-11-08 6:01 ` Zhang Rui
2012-11-08 6:26 ` Amit Kachhap
2012-11-09 3:51 ` Zhang Rui
2012-11-09 5:54 ` R, Durgadoss
2012-11-09 6:21 ` Amit Kachhap
2012-11-12 5:42 ` Zhang Rui
2012-11-12 5:55 ` R, Durgadoss
2012-11-12 6:33 ` Zhang Rui
2012-11-12 7:31 ` R, Durgadoss
2012-11-09 5:16 ` R, Durgadoss
2012-11-22 1:22 ` Zhang Rui [this message]
2012-11-22 4:41 ` Amit Kachhap
2012-11-22 8:12 ` Zhang Rui
2012-11-23 4:05 ` Amit Kachhap
2012-11-23 6:21 ` Zhang Rui
2012-11-08 4:26 ` [PATCH 2/4] Thermal: exynos: Add support for temperature falling interrupt Amit Daniel Kachhap
2012-11-08 4:26 ` [PATCH 3/4] thermal: exynos: Miscellaneous fixes to support falling threshold interrupt Amit Daniel Kachhap
2012-11-21 9:04 ` [PATCH 0/4] thermal: Add support for interrupt based notification to thermal layer Zhang, Rui
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