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Subject[PATCH v3 4/7] include: devfreq: add polling_idle_ms to 'profile'
Date
Add needed fields to support new state: idle, where different polling
interval is in use. It provides better control of the devfreq device
and lower the power consumption when the device is not busy.

Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
---
include/linux/devfreq.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index fbffa74..5140970 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -72,6 +72,11 @@ struct devfreq_dev_status {
* @initial_freq: The operating frequency when devfreq_add_device() is
* called.
* @polling_ms: The polling interval in ms. 0 disables polling.
+ * @polling_idle_ms: The polling interval in 'idle state' in ms.
+ * When the device is running at lowest frequency and has
+ * low-load, it is considered as in 'idle state'.
+ * Thus, longer polling interval is used for the device
+ * to save some power.
* @target: The device should set its operating frequency at
* freq or lowest-upper-than-freq value. If freq is
* higher than any operable frequency, set maximum.
@@ -98,6 +103,7 @@ struct devfreq_dev_status {
struct devfreq_dev_profile {
unsigned long initial_freq;
unsigned int polling_ms;
+ unsigned int polling_idle_ms;

int (*target)(struct device *dev, unsigned long *freq, u32 flags);
int (*get_dev_status)(struct device *dev,
--
2.7.4
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