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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2021-04-19 22:20:57 +0800 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2021-04-21 20:55:54 +0200 |
| commit | 77ba349101ac22bae2d4e635245b60173d49de2b (patch) | |
| tree | 2ba569027b1716d6495e402a4a97c49c1ab20d81 /drivers/net | |
| parent | 5536e7354aa8abf0e27a1bc58f4b4653b4884bdf (diff) | |
| download | lwn-77ba349101ac22bae2d4e635245b60173d49de2b.tar.gz lwn-77ba349101ac22bae2d4e635245b60173d49de2b.zip | |
mt76: mt7921: introduce mt7921_wpdma_reinit_cond utility routine
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@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Leon Yen <leon.yen@mediatek.com>
Signed-off-by: Leon Yen <leon.yen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net')
4 files changed, 36 insertions, 0 deletions
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 67a2571aa470..5bcbf1bc0746 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); @@ -315,6 +316,11 @@ 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); |