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authorRafael J. Wysocki <rjw@sisk.pl>2012-03-18 00:52:09 +0400
committerRafael J. Wysocki <rjw@sisk.pl>2012-03-18 00:52:09 +0400
commit0f0cc1687d7e41ac59e4eaf057aa2fb9e48a9dd3 (patch)
treeb9f8e4d4fc2db4128d9f7281cb9ea21fdb969658 /include
parent62dc7c02c31c2cc66c46cc8761d421c60bb07a6f (diff)
parentab5f299f51259fd2466cf35c89d79bd960e0fc32 (diff)
downloadlinux-0f0cc1687d7e41ac59e4eaf057aa2fb9e48a9dd3.tar.xz
Merge branch 'pm-devfreq'
* pm-devfreq: PM / devfreq: add relation of recommended frequency.
Diffstat (limited to 'include')
-rw-r--r--include/linux/devfreq.h16
1 files changed, 13 insertions, 3 deletions
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index 5862475d05f8..281c72a3b9d5 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -44,6 +44,14 @@ struct devfreq_dev_status {
void *private_data;
};
+/*
+ * The resulting frequency should be at most this. (this bound is the
+ * least upper bound; thus, the resulting freq should be lower or same)
+ * If the flag is not set, the resulting frequency should be at most the
+ * bound (greatest lower bound)
+ */
+#define DEVFREQ_FLAG_LEAST_UPPER_BOUND 0x1
+
/**
* struct devfreq_dev_profile - Devfreq's user device profile
* @initial_freq The operating frequency when devfreq_add_device() is
@@ -54,6 +62,8 @@ struct devfreq_dev_status {
* higher than any operable frequency, set maximum.
* Before returning, target function should set
* freq at the current frequency.
+ * The "flags" parameter's possible values are
+ * explained above with "DEVFREQ_FLAG_*" macros.
* @get_dev_status The device should provide the current performance
* status to devfreq, which is used by governors.
* @exit An optional callback that is called when devfreq
@@ -66,7 +76,7 @@ struct devfreq_dev_profile {
unsigned long initial_freq;
unsigned int polling_ms;
- int (*target)(struct device *dev, unsigned long *freq);
+ int (*target)(struct device *dev, unsigned long *freq, u32 flags);
int (*get_dev_status)(struct device *dev,
struct devfreq_dev_status *stat);
void (*exit)(struct device *dev);
@@ -165,7 +175,7 @@ extern int devfreq_remove_device(struct devfreq *devfreq);
/* Helper functions for devfreq user device driver with OPP. */
extern struct opp *devfreq_recommended_opp(struct device *dev,
- unsigned long *freq);
+ unsigned long *freq, u32 flags);
extern int devfreq_register_opp_notifier(struct device *dev,
struct devfreq *devfreq);
extern int devfreq_unregister_opp_notifier(struct device *dev,
@@ -216,7 +226,7 @@ static int devfreq_remove_device(struct devfreq *devfreq)
}
static struct opp *devfreq_recommended_opp(struct device *dev,
- unsigned long *freq)
+ unsigned long *freq, u32 flags)
{
return -EINVAL;
}