From: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Add mt7921_wpdma_reinit_cond to check dummy reg if driver needs to
reinitialized WPDMA after driver_own operation
Co-developed-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
Co-developed-by: Leon Yen <leon.yen@xxxxxxxxxxxx>
Signed-off-by: Leon Yen <leon.yen@xxxxxxxxxxxx>
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt76_connac.h | 2 ++
.../wireless/mediatek/mt76/mt7921/debugfs.c | 3 +++
.../net/wireless/mediatek/mt76/mt7921/dma.c | 25 +++++++++++++++++++
.../wireless/mediatek/mt76/mt7921/mt7921.h | 6 +++++
4 files changed, 36 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
index 9e61c107c640..6c889b90fd12 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h
@@ -64,11 +64,13 @@ struct mt76_connac_pm {
struct delayed_work ps_work;
unsigned long last_activity;
unsigned long idle_timeout;
+
struct {
unsigned long last_wake_event;
unsigned long awake_time;
unsigned long last_doze_event;
unsigned long doze_time;
+ unsigned int lp_wake;
} stats;
};
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
index f3982578cc56..6ee423dd4027 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
@@ -269,6 +269,7 @@ mt7921_pm_stats(struct seq_file *s, void *data)
{
struct mt7921_dev *dev = dev_get_drvdata(s->private);
struct mt76_connac_pm *pm = &dev->pm;
+
unsigned long awake_time = pm->stats.awake_time;
unsigned long doze_time = pm->stats.doze_time;
@@ -281,6 +282,8 @@ mt7921_pm_stats(struct seq_file *s, void *data)
jiffies_to_msecs(awake_time),
jiffies_to_msecs(doze_time));
+ seq_printf(s, "low power wakes: %9d\n", pm->stats.lp_wake);
+
return 0;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
index fb7f98d92377..71e664ee7652 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/dma.c
@@ -353,6 +353,31 @@ int mt7921_wpdma_reset(struct mt7921_dev *dev, bool force)
return 0;
}
+int mt7921_wpdma_reinit_cond(struct mt7921_dev *dev)
+{
+ struct mt76_connac_pm *pm = &dev->pm;
+ int err;
+
+ /* check if the wpdma must be reinitialized */
+ if (mt7921_dma_need_reinit(dev)) {
+ /* disable interrutpts */
+ mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
+ mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
+
+ err = mt7921_wpdma_reset(dev, false);
+ if (err) {
+ dev_err(dev->mt76.dev, "wpdma reset failed\n");
+ return err;
+ }
+
+ /* enable interrutpts */
+ mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
+ pm->stats.lp_wake++;
+ }
+
+ return 0;
+}
+
int mt7921_dma_init(struct mt7921_dev *dev)
{
/* Increase buffer size to receive large VHT/HE MPDUs */
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
index 67cb0a647066..efc3ba791342 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
@@ -254,6 +254,7 @@ int mt7921_eeprom_get_target_power(struct mt7921_dev *dev,
void mt7921_eeprom_init_sku(struct mt7921_dev *dev);
int mt7921_dma_init(struct mt7921_dev *dev);
int mt7921_wpdma_reset(struct mt7921_dev *dev, bool force);
+int mt7921_wpdma_reinit_cond(struct mt7921_dev *dev);
void mt7921_dma_cleanup(struct mt7921_dev *dev);
int mt7921_run_firmware(struct mt7921_dev *dev);
int mt7921_mcu_init(struct mt7921_dev *dev);
@@ -317,6 +318,11 @@ mt7921_l1_rmw(struct mt7921_dev *dev, u32 addr, u32 mask, u32 val)
#define mt7921_l1_set(dev, addr, val) mt7921_l1_rmw(dev, addr, 0, val)
#define mt7921_l1_clear(dev, addr, val) mt7921_l1_rmw(dev, addr, val, 0)
+static inline bool mt7921_dma_need_reinit(struct mt7921_dev *dev)
+{
+ return !mt76_get_field(dev, MT_WFDMA_DUMMY_CR, MT_WFDMA_NEED_REINIT);
+}
+
void mt7921_mac_init(struct mt7921_dev *dev);
bool mt7921_mac_wtbl_update(struct mt7921_dev *dev, int idx, u32 mask);
void mt7921_mac_reset_counters(struct mt7921_phy *phy);
--
2.25.1
