From 206c30cfeb7c05dfb9fdfd81b1deb933627e43c1 Mon Sep 17 00:00:00 2001 From: Rajagopal Venkat Date: Fri, 26 Oct 2012 01:50:18 +0200 Subject: PM / devfreq: Add suspend and resume apis Add devfreq suspend/resume apis for devfreq users. This patch supports suspend and resume of devfreq load monitoring, required for devices which can idle. Signed-off-by: Rajagopal Venkat Acked-by: MyungJoo Ham Signed-off-by: Rafael J. Wysocki --- drivers/devfreq/devfreq.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'drivers/devfreq/devfreq.c') diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 1aaf1aeb1f1d..999600da21c7 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -427,6 +427,34 @@ int devfreq_remove_device(struct devfreq *devfreq) } EXPORT_SYMBOL(devfreq_remove_device); +/** + * devfreq_suspend_device() - Suspend devfreq of a device. + * @devfreq: the devfreq instance to be suspended + */ +int devfreq_suspend_device(struct devfreq *devfreq) +{ + if (!devfreq) + return -EINVAL; + + return devfreq->governor->event_handler(devfreq, + DEVFREQ_GOV_SUSPEND, NULL); +} +EXPORT_SYMBOL(devfreq_suspend_device); + +/** + * devfreq_resume_device() - Resume devfreq of a device. + * @devfreq: the devfreq instance to be resumed + */ +int devfreq_resume_device(struct devfreq *devfreq) +{ + if (!devfreq) + return -EINVAL; + + return devfreq->governor->event_handler(devfreq, + DEVFREQ_GOV_RESUME, NULL); +} +EXPORT_SYMBOL(devfreq_resume_device); + static ssize_t show_governor(struct device *dev, struct device_attribute *attr, char *buf) { -- cgit