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authorRajagopal Venkat <rajagopal.venkat@linaro.org>2012-10-26 01:50:26 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-15 00:35:04 +0100
commit7f98a905dca6e4f144cdd4462edeac00c2bdc379 (patch)
tree4841af3592cbd0b21f50a40f17900dfc9fc40804 /Documentation/ABI
parentPM / devfreq: Add suspend and resume apis (diff)
downloadlinux-7f98a905dca6e4f144cdd4462edeac00c2bdc379.tar.xz
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PM / devfreq: Add current freq callback in device profile
Devfreq returns governor predicted frequency as current frequency via sysfs interface. But device may not support all frequencies that governor predicts. So add a callback in device profile to get current freq from driver. Also add a new sysfs node to expose governor predicted next target frequency. Signed-off-by: Rajagopal Venkat <rajagopal.venkat@linaro.org> Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-class-devfreq11
1 files changed, 10 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq b/Documentation/ABI/testing/sysfs-class-devfreq
index 89283b1b0240..e6cf08e6734d 100644
--- a/Documentation/ABI/testing/sysfs-class-devfreq
+++ b/Documentation/ABI/testing/sysfs-class-devfreq
@@ -19,7 +19,16 @@ Date: September 2011
Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
Description:
The /sys/class/devfreq/.../cur_freq shows the current
- frequency of the corresponding devfreq object.
+ frequency of the corresponding devfreq object. Same as
+ target_freq when get_cur_freq() is not implemented by
+ devfreq driver.
+
+What: /sys/class/devfreq/.../target_freq
+Date: September 2012
+Contact: Rajagopal Venkat <rajagopal.venkat@linaro.org>
+Description:
+ The /sys/class/devfreq/.../target_freq shows the next governor
+ predicted target frequency of the corresponding devfreq object.
What: /sys/class/devfreq/.../polling_interval
Date: September 2011