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cfg802154: add PM hooks

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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>
This commit is contained in:
Varka Bhadram 2015-06-24 11:36:35 +02:00 committed by Marcel Holtmann
parent c4227c8a62
commit a6cb869b3b
4 changed files with 82 additions and 0 deletions
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2
include/net/cfg802154.h
View file

@ -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,

20
net/ieee802154/rdev-ops.h
View file

@ -23,6 +23,26 @@ rdev_del_virtual_intf_deprecated(struct cfg802154_registered_device *rdev,
rdev->ops->del_virtual_intf_deprecated(&rdev->wpan_phy, dev);
}
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,

38
net/ieee802154/sysfs.c
View file

@ -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)

22
net/ieee802154/trace.h
View file

@ -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),