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authorVarka Bhadram <varkabhadram@gmail.com>2015-06-24 11:36:35 +0200
committerMarcel Holtmann <marcel@holtmann.org>2015-07-23 17:10:49 +0200
commita6cb869b3b7c16fd7c3ee766dd9f9a4fdda7edf9 (patch)
treea62ccbcbd43f12ffd7025f897134fd37e3d7b0b3
parentc4227c8a6246b30793bd7360113ddc7b66d526dc (diff)
downloadlinux-stericsson-a6cb869b3b7c16fd7c3ee766dd9f9a4fdda7edf9.tar.gz
cfg802154: add PM hooks
This patch help to implement suspend/resume in mac802154, these hooks will be run before the device is suspended and after it resumes. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
-rw-r--r--include/net/cfg802154.h2
-rw-r--r--net/ieee802154/rdev-ops.h20
-rw-r--r--net/ieee802154/sysfs.c38
-rw-r--r--net/ieee802154/trace.h22
4 files changed, 82 insertions, 0 deletions
diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
index 290a9a69af07..382f94b59f2f 100644
--- a/include/net/cfg802154.h
+++ b/include/net/cfg802154.h
@@ -34,6 +34,8 @@ struct cfg802154_ops {
int type);
void (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
struct net_device *dev);
+ int (*suspend)(struct wpan_phy *wpan_phy);
+ int (*resume)(struct wpan_phy *wpan_phy);
int (*add_virtual_intf)(struct wpan_phy *wpan_phy,
const char *name,
unsigned char name_assign_type,
diff --git a/net/ieee802154/rdev-ops.h b/net/ieee802154/rdev-ops.h
index b2155a123f6c..8d5960a37195 100644
--- a/net/ieee802154/rdev-ops.h
+++ b/net/ieee802154/rdev-ops.h
@@ -24,6 +24,26 @@ rdev_del_virtual_intf_deprecated(struct cfg802154_registered_device *rdev,
}
static inline int
+rdev_suspend(struct cfg802154_registered_device *rdev)
+{
+ int ret;
+ trace_802154_rdev_suspend(&rdev->wpan_phy);
+ ret = rdev->ops->suspend(&rdev->wpan_phy);
+ trace_802154_rdev_return_int(&rdev->wpan_phy, ret);
+ return ret;
+}
+
+static inline int
+rdev_resume(struct cfg802154_registered_device *rdev)
+{
+ int ret;
+ trace_802154_rdev_resume(&rdev->wpan_phy);
+ ret = rdev->ops->resume(&rdev->wpan_phy);
+ trace_802154_rdev_return_int(&rdev->wpan_phy, ret);
+ return ret;
+}
+
+static inline int
rdev_add_virtual_intf(struct cfg802154_registered_device *rdev, char *name,
unsigned char name_assign_type,
enum nl802154_iftype type, __le64 extended_addr)
diff --git a/net/ieee802154/sysfs.c b/net/ieee802154/sysfs.c
index 133b4280660c..bd88525b041e 100644
--- a/net/ieee802154/sysfs.c
+++ b/net/ieee802154/sysfs.c
@@ -14,11 +14,13 @@
*/
#include <linux/device.h>
+#include <linux/rtnetlink.h>
#include <net/cfg802154.h>
#include "core.h"
#include "sysfs.h"
+#include "rdev-ops.h"
static inline struct cfg802154_registered_device *
dev_to_rdev(struct device *dev)
@@ -62,10 +64,46 @@ static struct attribute *pmib_attrs[] = {
};
ATTRIBUTE_GROUPS(pmib);
+#ifdef CONFIG_PM_SLEEP
+static int wpan_phy_suspend(struct device *dev)
+{
+ struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
+ int ret = 0;
+
+ if (rdev->ops->suspend) {
+ rtnl_lock();
+ ret = rdev_suspend(rdev);
+ rtnl_unlock();
+ }
+
+ return ret;
+}
+
+static int wpan_phy_resume(struct device *dev)
+{
+ struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
+ int ret = 0;
+
+ if (rdev->ops->resume) {
+ rtnl_lock();
+ ret = rdev_resume(rdev);
+ rtnl_unlock();
+ }
+
+ return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);
+#define WPAN_PHY_PM_OPS (&wpan_phy_pm_ops)
+#else
+#define WPAN_PHY_PM_OPS NULL
+#endif
+
struct class wpan_phy_class = {
.name = "ieee802154",
.dev_release = wpan_phy_release,
.dev_groups = pmib_groups,
+ .pm = WPAN_PHY_PM_OPS,
};
int wpan_phy_sysfs_init(void)
diff --git a/net/ieee802154/trace.h b/net/ieee802154/trace.h
index 9b5f0eb36696..4399b7fbaa31 100644
--- a/net/ieee802154/trace.h
+++ b/net/ieee802154/trace.h
@@ -40,6 +40,28 @@
* rdev->ops traces *
*************************************************************/
+DECLARE_EVENT_CLASS(wpan_phy_only_evt,
+ TP_PROTO(struct wpan_phy *wpan_phy),
+ TP_ARGS(wpan_phy),
+ TP_STRUCT__entry(
+ WPAN_PHY_ENTRY
+ ),
+ TP_fast_assign(
+ WPAN_PHY_ASSIGN;
+ ),
+ TP_printk(WPAN_PHY_PR_FMT, WPAN_PHY_PR_ARG)
+);
+
+DEFINE_EVENT(wpan_phy_only_evt, 802154_rdev_suspend,
+ TP_PROTO(struct wpan_phy *wpan_phy),
+ TP_ARGS(wpan_phy)
+);
+
+DEFINE_EVENT(wpan_phy_only_evt, 802154_rdev_resume,
+ TP_PROTO(struct wpan_phy *wpan_phy),
+ TP_ARGS(wpan_phy)
+);
+
TRACE_EVENT(802154_rdev_add_virtual_intf,
TP_PROTO(struct wpan_phy *wpan_phy, char *name,
enum nl802154_iftype type, __le64 extended_addr),