Add the function to automatically switch the RTL8812AU into USB 3 mode.
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
---
drivers/net/wireless/realtek/rtw88/usb.c | 34 ++++++++++++++++++++++--
1 file changed, 32 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtw88/usb.c b/drivers/net/wireless/realtek/rtw88/usb.c
index 6fa3c37205f5..752bca05b9af 100644
--- a/drivers/net/wireless/realtek/rtw88/usb.c
+++ b/drivers/net/wireless/realtek/rtw88/usb.c
@@ -931,6 +931,32 @@ static void rtw_usb_intf_deinit(struct rtw_dev *rtwdev,
usb_set_intfdata(intf, NULL);
}
+static int rtw_usb_switch_mode_old(struct rtw_dev *rtwdev)
+{
+ struct rtw_usb *rtwusb = rtw_get_usb_priv(rtwdev);
+ enum usb_device_speed cur_speed = rtwusb->udev->speed;
+ u8 hci_opt;
+
+ if (cur_speed == USB_SPEED_HIGH) {
+ hci_opt = rtw_read8(rtwdev, REG_HCI_OPT_CTRL);
+
+ if ((hci_opt & (BIT(2) | BIT(3))) != BIT(3)) {
+ rtw_write8(rtwdev, REG_HCI_OPT_CTRL, 0x8);
+ rtw_write8(rtwdev, REG_SYS_SDIO_CTRL, 0x2);
+ rtw_write8(rtwdev, REG_ACLK_MON, 0x1);
+ rtw_write8(rtwdev, 0x3d, 0x3);
+ /* usb disconnect */
+ rtw_write8(rtwdev, REG_SYS_PW_CTRL + 1, 0x80);
+ return 1;
+ }
+ } else if (cur_speed == USB_SPEED_SUPER) {
+ rtw_write8_clr(rtwdev, REG_SYS_SDIO_CTRL, BIT(1));
+ rtw_write8_clr(rtwdev, REG_ACLK_MON, BIT(0));
+ }
+
+ return 0;
+}
+
static int rtw_usb_switch_mode_new(struct rtw_dev *rtwdev)
{
enum usb_device_speed cur_speed;
@@ -984,7 +1010,8 @@ static int rtw_usb_switch_mode(struct rtw_dev *rtwdev)
{
u8 id = rtwdev->chip->id;
- if (id != RTW_CHIP_TYPE_8822C && id != RTW_CHIP_TYPE_8822B)
+ if (id != RTW_CHIP_TYPE_8822C && id != RTW_CHIP_TYPE_8822B &&
+ id != RTW_CHIP_TYPE_8812A)
return 0;
if (!rtwdev->efuse.usb_mode_switch) {
@@ -999,7 +1026,10 @@ static int rtw_usb_switch_mode(struct rtw_dev *rtwdev)
return 0;
}
- return rtw_usb_switch_mode_new(rtwdev);
+ if (id == RTW_CHIP_TYPE_8812A)
+ return rtw_usb_switch_mode_old(rtwdev);
+ else /* RTL8822CU, RTL8822BU */
+ return rtw_usb_switch_mode_new(rtwdev);
}
int rtw_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
base-commit: 1f3de77752a7bf0d1beb44603f048eb46948b9fe
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--
2.47.0
