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authorLeonard Crestez <leonard.crestez@nxp.com>2019-12-05 13:05:06 +0300
committerChanwoo Choi <cw00.choi@samsung.com>2019-12-09 06:19:16 +0300
commit05d7ae15cfb18f9ce55eef85bb6bcd62d31acc57 (patch)
tree55a49a01c747e80705aaf3b4875f72c7246a17e8 /include
parent42a6b25e67df6ee6675e8d1eaf18065bd73328ba (diff)
downloadlinux-05d7ae15cfb18f9ce55eef85bb6bcd62d31acc57.tar.xz
PM / devfreq: Add PM QoS support
Register notifiers with the PM QoS framework in order to respond to requests for DEV_PM_QOS_MIN_FREQUENCY and DEV_PM_QOS_MAX_FREQUENCY. No notifiers are added by this patch but PM QoS constraints can be imposed externally (for example from other devices). Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Tested-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/devfreq.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index 2bae9ed3c783..8b92ccbd1962 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -136,6 +136,8 @@ struct devfreq_dev_profile {
* @time_in_state: Statistics of devfreq states
* @last_stat_updated: The last time stat updated
* @transition_notifier_list: list head of DEVFREQ_TRANSITION_NOTIFIER notifier
+ * @nb_min: Notifier block for DEV_PM_QOS_MIN_FREQUENCY
+ * @nb_max: Notifier block for DEV_PM_QOS_MAX_FREQUENCY
*
* This structure stores the devfreq information for a give device.
*
@@ -178,6 +180,9 @@ struct devfreq {
unsigned long last_stat_updated;
struct srcu_notifier_head transition_notifier_list;
+
+ struct notifier_block nb_min;
+ struct notifier_block nb_max;
};
struct devfreq_freqs {