[PATCH 03/17] mt76: mt7615: add mt7615_pm_wake utility routine
Lorenzo Bianconi
lorenzo at kernel.org
Fri Jun 26 17:25:03 EDT 2020
Introduce mt7615_pm_wake utility routine to wake the device from
runtime low-power state (lower-power state is currently supported by
offload firmware for pcie devices).
Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt76.h | 1 +
.../net/wireless/mediatek/mt76/mt7615/init.c | 3 ++
.../net/wireless/mediatek/mt76/mt7615/mac.c | 42 +++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7615/main.c | 2 +
.../net/wireless/mediatek/mt76/mt7615/mcu.c | 25 ++++++++---
.../wireless/mediatek/mt76/mt7615/mt7615.h | 8 ++++
6 files changed, 75 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index f7be1d5f71a0..265ee55d22f1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -291,6 +291,7 @@ enum {
MT76_STATE_POWER_OFF,
MT76_STATE_SUSPEND,
MT76_STATE_ROC,
+ MT76_STATE_PM,
};
struct mt76_hw_cap {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 7daaab277b26..b5632c71cbbd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -444,6 +444,9 @@ void mt7615_init_device(struct mt7615_dev *dev)
dev->phy.dev = dev;
dev->phy.mt76 = &dev->mt76.phy;
dev->mt76.phy.priv = &dev->phy;
+
+ INIT_WORK(&dev->pm.wake_work, mt7615_pm_wake_work);
+ init_completion(&dev->pm.wake_cmpl);
INIT_DELAYED_WORK(&dev->phy.mac_work, mt7615_mac_work);
INIT_DELAYED_WORK(&dev->phy.scan_work, mt7615_scan_work);
skb_queue_head_init(&dev->phy.scan_event_list);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index c1a802366172..4d8cd88473dd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -1808,6 +1808,48 @@ mt7615_mac_update_mib_stats(struct mt7615_phy *phy)
}
}
+void mt7615_pm_wake_work(struct work_struct *work)
+{
+ struct mt7615_dev *dev;
+ struct mt76_phy *mphy;
+
+ dev = (struct mt7615_dev *)container_of(work, struct mt7615_dev,
+ pm.wake_work);
+ mphy = dev->phy.mt76;
+
+ if (mt7615_driver_own(dev))
+ dev_err(mphy->dev->dev, "failed to wake device\n");
+
+ complete_all(&dev->pm.wake_cmpl);
+}
+
+int mt7615_pm_wake(struct mt7615_dev *dev)
+{
+ struct mt76_phy *mphy = dev->phy.mt76;
+
+ if (!mt7615_firmware_offload(dev))
+ return 0;
+
+ if (!mt76_is_mmio(mphy->dev))
+ return 0;
+
+ if (!test_bit(MT76_STATE_PM, &mphy->state))
+ return 0;
+
+ if (test_bit(MT76_HW_SCANNING, &mphy->state) ||
+ test_bit(MT76_HW_SCHED_SCANNING, &mphy->state))
+ return 0;
+
+ if (queue_work(dev->mt76.wq, &dev->pm.wake_work))
+ reinit_completion(&dev->pm.wake_cmpl);
+
+ if (!wait_for_completion_timeout(&dev->pm.wake_cmpl, 3 * HZ))
+ return -ETIMEDOUT;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mt7615_pm_wake);
+
void mt7615_mac_work(struct work_struct *work)
{
struct mt7615_phy *phy;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index 3bcbd13c26d7..1e7f7b9b1388 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -74,6 +74,8 @@ static void mt7615_stop(struct ieee80211_hw *hw)
del_timer_sync(&phy->roc_timer);
cancel_work_sync(&phy->roc_work);
+ cancel_work_sync(&dev->pm.wake_work);
+
mutex_lock(&dev->mt76.mutex);
mt76_testmode_reset(&dev->mt76, true);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 89a09745df08..b72c824e5c15 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -1916,28 +1916,36 @@ static void mt7622_trigger_hif_int(struct mt7615_dev *dev, bool en)
int mt7615_driver_own(struct mt7615_dev *dev)
{
+ struct mt76_phy *mphy = &dev->mt76.phy;
struct mt76_dev *mdev = &dev->mt76;
+ int err = 0;
u32 addr;
+ mt7622_trigger_hif_int(dev, true);
+
addr = is_mt7663(mdev) ? MT_PCIE_DOORBELL_PUSH : MT_CFG_LPCR_HOST;
mt76_wr(dev, addr, MT_CFG_LPCR_HOST_DRV_OWN);
- mt7622_trigger_hif_int(dev, true);
-
addr = is_mt7663(mdev) ? MT_CONN_HIF_ON_LPCTL : MT_CFG_LPCR_HOST;
if (!mt76_poll_msec(dev, addr, MT_CFG_LPCR_HOST_FW_OWN, 0, 3000)) {
dev_err(dev->mt76.dev, "Timeout for driver own\n");
- return -EIO;
+ err = -EIO;
+ goto out;
}
+ clear_bit(MT76_STATE_PM, &mphy->state);
+
+out:
mt7622_trigger_hif_int(dev, false);
- return 0;
+ return err;
}
EXPORT_SYMBOL_GPL(mt7615_driver_own);
int mt7615_firmware_own(struct mt7615_dev *dev)
{
+ struct mt76_phy *mphy = &dev->mt76.phy;
+ int err = 0;
u32 addr;
addr = is_mt7663(&dev->mt76) ? MT_CONN_HIF_ON_LPCTL : MT_CFG_LPCR_HOST;
@@ -1949,11 +1957,16 @@ int mt7615_firmware_own(struct mt7615_dev *dev)
!mt76_poll_msec(dev, addr, MT_CFG_LPCR_HOST_FW_OWN,
MT_CFG_LPCR_HOST_FW_OWN, 300)) {
dev_err(dev->mt76.dev, "Timeout for firmware own\n");
- return -EIO;
+ err = -EIO;
+ goto out;
}
+
+ set_bit(MT76_STATE_PM, &mphy->state);
+
+out:
mt7622_trigger_hif_int(dev, false);
- return 0;
+ return err;
}
EXPORT_SYMBOL_GPL(mt7615_firmware_own);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
index 1ae6ea5b4f16..194ae43091d6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
@@ -4,6 +4,7 @@
#ifndef __MT7615_H
#define __MT7615_H
+#include <linux/completion.h>
#include <linux/interrupt.h>
#include <linux/ktime.h>
#include <linux/regmap.h>
@@ -296,6 +297,11 @@ struct mt7615_dev {
s8 last_wb_rssi;
} test;
#endif
+
+ struct {
+ struct work_struct wake_work;
+ struct completion wake_cmpl;
+ } pm;
};
enum tx_pkt_queue_idx {
@@ -425,6 +431,8 @@ bool mt7615_wait_for_mcu_init(struct mt7615_dev *dev);
void mt7615_mac_set_rates(struct mt7615_phy *phy, struct mt7615_sta *sta,
struct ieee80211_tx_rate *probe_rate,
struct ieee80211_tx_rate *rates);
+void mt7615_pm_wake_work(struct work_struct *work);
+int mt7615_pm_wake(struct mt7615_dev *dev);
int mt7615_mcu_del_wtbl_all(struct mt7615_dev *dev);
int mt7615_mcu_set_chan_info(struct mt7615_phy *phy, int cmd);
int mt7615_mcu_set_wmm(struct mt7615_dev *dev, u8 queue,
--
2.26.2
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