linux-kernel - [PATCH 5.10 106/390] Bluetooth: btusb: Fine-tune mt7663 mechanism.

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Date:   Mon, 24 Oct 2022 13:28:23 +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, Mark Chen <Mark-YW.Chen@...iatek.com>,
        Marcel Holtmann <marcel@...tmann.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 106/390] Bluetooth: btusb: Fine-tune mt7663 mechanism.

From: Mark Chen <Mark-YW.Chen@...iatek.com>

[ Upstream commit 48c13301e6baba5fd0960b412af519c0baa98011 ]

Fine-tune read register for mt7663/mt7921.
For mediatek chip spcific wmt protocol, we add more delay to send EP0
In-Token.

Signed-off-by: Mark Chen <Mark-YW.Chen@...iatek.com>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
Stable-dep-of: fd3f106677ba ("Bluetooth: btusb: mediatek: fix WMT failure during runtime suspend")
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/bluetooth/btusb.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index a699e6166aef..eb6e33d168d8 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2816,6 +2816,7 @@ enum {
 enum {
 	BTMTK_WMT_INVALID,
 	BTMTK_WMT_PATCH_UNDONE,
+	BTMTK_WMT_PATCH_PROGRESS,
 	BTMTK_WMT_PATCH_DONE,
 	BTMTK_WMT_ON_UNDONE,
 	BTMTK_WMT_ON_DONE,
@@ -2831,7 +2832,7 @@ struct btmtk_wmt_hdr {
 
 struct btmtk_hci_wmt_cmd {
 	struct btmtk_wmt_hdr hdr;
-	u8 data[256];
+	u8 data[1000];
 } __packed;
 
 struct btmtk_hci_wmt_evt {
@@ -2934,7 +2935,7 @@ static void btusb_mtk_wmt_recv(struct urb *urb)
 	 * to generate the event. Otherwise, the WMT event cannot return from
 	 * the device successfully.
 	 */
-	udelay(100);
+	udelay(500);
 
 	usb_anchor_urb(urb, &data->ctrl_anchor);
 	err = usb_submit_urb(urb, GFP_ATOMIC);
@@ -3238,9 +3239,9 @@ static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
 	return err;
 }
 
-static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
+static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
 {
-	return btusb_mtk_reg_read(data, 0x80000008, id);
+	return btusb_mtk_reg_read(data, reg, id);
 }
 
 static int btusb_mtk_setup(struct hci_dev *hdev)
@@ -3258,7 +3259,7 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 
 	calltime = ktime_get();
 
-	err = btusb_mtk_id_get(data, &dev_id);
+	err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
 	if (err < 0) {
 		bt_dev_err(hdev, "Failed to get device id (%d)", err);
 		return err;
-- 
2.35.1