diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2020-05-01 12:36:15 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2020-05-12 19:52:34 +0200 |
| commit | 6dd4072c1e8bc46ee81bdd5f779590bc43ab9ae4 (patch) | |
| tree | f083d5a57a796a36d7f57bea1281f0d604b4db97 /drivers/net/wireless/mediatek/mt76/mt7615/dma.c | |
| parent | d0846f0867f3361c551e2f431f94f64c58646d56 (diff) | |
mt76: mt7615: introduce PM support
Introduce suspend/resume to mt7615e driver
Co-developed-by: Wan-Feng Jiang <Wan-Feng.Jiang@mediatek.com>
Signed-off-by: Wan-Feng Jiang <Wan-Feng.Jiang@mediatek.com>
Co-developed-by: Soul Huang <Soul.Huang@mediatek.com>
Signed-off-by: Soul Huang <Soul.Huang@mediatek.com>
Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/dma.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/dma.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/dma.c b/drivers/net/wireless/mediatek/mt76/mt7615/dma.c index 0b1fbddd1c3f..5a124610d4af 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/dma.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/dma.c @@ -130,6 +130,43 @@ static int mt7615_poll_tx(struct napi_struct *napi, int budget) return 0; } +int mt7615_wait_pdma_busy(struct mt7615_dev *dev) +{ + struct mt76_dev *mdev = &dev->mt76; + + if (!is_mt7663(mdev)) { + u32 mask = MT_PDMA_TX_BUSY | MT_PDMA_RX_BUSY; + u32 reg = mt7615_reg_map(dev, MT_PDMA_BUSY); + + if (!mt76_poll_msec(dev, reg, mask, 0, 1000)) { + dev_err(mdev->dev, "PDMA engine busy\n"); + return -EIO; + } + + return 0; + } + + if (!mt76_poll_msec(dev, MT_PDMA_BUSY_STATUS, + MT_PDMA_TX_IDX_BUSY, 0, 1000)) { + dev_err(mdev->dev, "PDMA engine tx busy\n"); + return -EIO; + } + + if (!mt76_poll_msec(dev, MT_PSE_PG_INFO, + MT_PSE_SRC_CNT, 0, 1000)) { + dev_err(mdev->dev, "PSE engine busy\n"); + return -EIO; + } + + if (!mt76_poll_msec(dev, MT_PDMA_BUSY_STATUS, + MT_PDMA_BUSY_IDX, 0, 1000)) { + dev_err(mdev->dev, "PDMA engine busy\n"); + return -EIO; + } + + return 0; +} + static void mt7622_dma_sched_init(struct mt7615_dev *dev) { u32 reg = mt7615_reg_map(dev, MT_DMASHDL_BASE); |