linux-kernel - [PATCH 5.7 183/376] mt76: mt7615: fix mt7615_driver

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Date:   Fri, 19 Jun 2020 16:31:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lorenzo Bianconi <lorenzo@...nel.org>,
        Felix Fietkau <nbd@....name>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.7 183/376] mt76: mt7615: fix mt7615_driver_own routine

From: Lorenzo Bianconi <lorenzo@...nel.org>

[ Upstream commit 338061619185133f56ac17365deb1e75eaecc604 ]

Introduce MT_PCIE_DOORBELL_PUSH register to fix mt7615_driver_own
routine for mt7663e

Fixes: f40ac0f3d3c0 ("mt76: mt7615: introduce mt7663e support")
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7615/mcu.c  | 6 +++++-
 drivers/net/wireless/mediatek/mt76/mt7615/regs.h | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 0d56e0834bde..29a7aaabb6da 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -1526,16 +1526,20 @@ static void mt7622_trigger_hif_int(struct mt7615_dev *dev, bool en)
 
 static int mt7615_driver_own(struct mt7615_dev *dev)
 {
+	struct mt76_dev *mdev = &dev->mt76;
 	u32 addr;
 
-	addr = is_mt7663(&dev->mt76) ? MT_CONN_HIF_ON_LPCTL : MT_CFG_LPCR_HOST;
+	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;
 	}
+
 	mt7622_trigger_hif_int(dev, false);
 
 	return 0;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/regs.h b/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
index f7c2a633841c..de0ef165c0ba 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/regs.h
@@ -65,6 +65,7 @@ enum mt7615_reg_base {
 #define MT_HIF2_BASE			0xf0000
 #define MT_HIF2(ofs)			(MT_HIF2_BASE + (ofs))
 #define MT_PCIE_IRQ_ENABLE		MT_HIF2(0x188)
+#define MT_PCIE_DOORBELL_PUSH		MT_HIF2(0x1484)
 
 #define MT_CFG_LPCR_HOST		MT_HIF(0x1f0)
 #define MT_CFG_LPCR_HOST_FW_OWN		BIT(0)
-- 
2.25.1