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mt76: connac: introduce wake counter for fw_pmctrl synchronization

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Introduce wake counter and related spinlock in order to synchronize
tx/rx path and fw_pmctrl request.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2021-04-18 18:45:29 +02:00 • committed by Felix Fietkau
parent 7cd740f0e4
commit 7f2bc8ba11
1 changed files with 31 additions and 0 deletions
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31
drivers/net/wireless/mediatek/mt76/mt76_connac.h
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@ -54,6 +54,11 @@ struct mt76_connac_pm {
struct work_struct wake_work; struct work_struct wake_work;
struct completion wake_cmpl; struct completion wake_cmpl;
struct {
spinlock_t lock;
u32 count;
} wake;
struct mutex mutex; struct mutex mutex;
struct delayed_work ps_work; struct delayed_work ps_work;
@ -85,6 +90,32 @@ void mt76_connac_power_save_sched(struct mt76_phy *phy,
void mt76_connac_free_pending_tx_skbs(struct mt76_connac_pm *pm, void mt76_connac_free_pending_tx_skbs(struct mt76_connac_pm *pm,
struct mt76_wcid *wcid); struct mt76_wcid *wcid);
static inline bool
mt76_connac_pm_ref(struct mt76_phy *phy, struct mt76_connac_pm *pm)
{
bool ret = false;
spin_lock_bh(&pm->wake.lock);
if (test_bit(MT76_STATE_PM, &phy->state))
goto out;
pm->wake.count++;
ret = true;
out:
spin_unlock_bh(&pm->wake.lock);
return ret;
}
static inline void
mt76_connac_pm_unref(struct mt76_connac_pm *pm)
{
spin_lock_bh(&pm->wake.lock);
pm->wake.count--;
pm->last_activity = jiffies;
spin_unlock_bh(&pm->wake.lock);
}
static inline void static inline void
mt76_connac_mutex_acquire(struct mt76_dev *dev, struct mt76_connac_pm *pm) mt76_connac_mutex_acquire(struct mt76_dev *dev, struct mt76_connac_pm *pm)
__acquires(&dev->mutex) __acquires(&dev->mutex)