From 7f98a905dca6e4f144cdd4462edeac00c2bdc379 Mon Sep 17 00:00:00 2001 From: Rajagopal Venkat Date: Fri, 26 Oct 2012 01:50:26 +0200 Subject: 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 Acked-by: MyungJoo Ham Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/devfreq.h') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index ee243a3229b..7e2e2ea4a70 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -66,6 +66,8 @@ struct devfreq_dev_status { * explained above with "DEVFREQ_FLAG_*" macros. * @get_dev_status The device should provide the current performance * status to devfreq, which is used by governors. + * @get_cur_freq The device should provide the current frequency + * at which it is operating. * @exit An optional callback that is called when devfreq * is removing the devfreq object due to error or * from devfreq_remove_device() call. If the user @@ -79,6 +81,7 @@ struct devfreq_dev_profile { int (*target)(struct device *dev, unsigned long *freq, u32 flags); int (*get_dev_status)(struct device *dev, struct devfreq_dev_status *stat); + int (*get_cur_freq)(struct device *dev, unsigned long *freq); void (*exit)(struct device *dev); }; -- cgit v1.2.3-70-g09d2