#define BIT_WLOCK_1C_B6 BIT(5)
#define REG_SYS_PW_CTRL 0x0004
#define BIT_PFM_WOWL BIT(3)
+#define BIT_APFM_OFFMAC BIT(9)
#define REG_SYS_CLK_CTRL 0x0008
#define BIT_CPU_CLK_EN BIT(14)
#define REG_PMC_DBG_CTRL1 0xa8
#define BITS_PMC_BT_IQK_STS GENMASK(22, 21)
+#define REG_PAD_CTRL2 0x00C4
+#define BIT_RSM_EN_V1 BIT(16)
+#define BIT_NO_PDN_CHIPOFF_V1 BIT(17)
+#define BIT_MASK_USB23_SW_MODE_V1 GENMASK(19, 18)
+#define BIT_USB3_USB2_TRANSITION BIT(20)
+#define BIT_USB_MODE_U2 1
+#define BIT_USB_MODE_U3 2
+
#define REG_EFUSE_ACCESS 0x00CF
#define EFUSE_ACCESS_ON 0x69
#define EFUSE_ACCESS_OFF 0x00
#define BIT_WL_SECURITY_CLK BIT(15)
#define BIT_DDMA_EN BIT(8)
+#define REG_SW_MDIO 0x10C0
+
#define REG_H2C_PKT_READADDR 0x10D0
#define REG_H2C_PKT_WRITEADDR 0x10D4
#define REG_FW_DBG6 0x10F8
#include "ps.h"
#include "usb.h"
+static bool rtw_switch_usb_mode = true;
+module_param_named(switch_usb_mode, rtw_switch_usb_mode, bool, 0644);
+MODULE_PARM_DESC(switch_usb_mode,
+ "Set to N to disable switching to USB 3 mode to avoid potential interference in the 2.4 GHz band (default: Y)");
+
#define RTW_USB_MAX_RXQ_LEN 512
struct rtw_usb_txcb {
usb_set_intfdata(intf, NULL);
}
+static int rtw_usb_switch_mode_new(struct rtw_dev *rtwdev)
+{
+ enum usb_device_speed cur_speed;
+ u8 id = rtwdev->chip->id;
+ bool can_switch;
+ u32 pad_ctrl2;
+
+ if (rtw_read8(rtwdev, REG_SYS_CFG2 + 3) == 0x20)
+ cur_speed = USB_SPEED_SUPER;
+ else
+ cur_speed = USB_SPEED_HIGH;
+
+ if (cur_speed == USB_SPEED_SUPER)
+ return 0;
+
+ pad_ctrl2 = rtw_read32(rtwdev, REG_PAD_CTRL2);
+
+ can_switch = !!(pad_ctrl2 & (BIT_MASK_USB23_SW_MODE_V1 |
+ BIT_USB3_USB2_TRANSITION));
+
+ if (!can_switch) {
+ rtw_dbg(rtwdev, RTW_DBG_USB,
+ "Switching to USB 3 mode unsupported by the chip\n");
+ return 0;
+ }
+
+ /* At this point cur_speed is USB_SPEED_HIGH. If we already tried
+ * to switch don't try again - it's a USB 2 port.
+ */
+ if (u32_get_bits(pad_ctrl2, BIT_MASK_USB23_SW_MODE_V1) == BIT_USB_MODE_U3)
+ return 0;
+
+ /* Enable IO wrapper timeout */
+ if (id == RTW_CHIP_TYPE_8822B || id == RTW_CHIP_TYPE_8821C)
+ rtw_write8_clr(rtwdev, REG_SW_MDIO + 3, BIT(0));
+
+ u32p_replace_bits(&pad_ctrl2, BIT_USB_MODE_U3, BIT_MASK_USB23_SW_MODE_V1);
+ pad_ctrl2 |= BIT_RSM_EN_V1;
+
+ rtw_write32(rtwdev, REG_PAD_CTRL2, pad_ctrl2);
+ rtw_write8(rtwdev, REG_PAD_CTRL2 + 1, 4);
+
+ rtw_write16_set(rtwdev, REG_SYS_PW_CTRL, BIT_APFM_OFFMAC);
+ usleep_range(1000, 1001);
+ rtw_write32_set(rtwdev, REG_PAD_CTRL2, BIT_NO_PDN_CHIPOFF_V1);
+
+ return 1;
+}
+
+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)
+ return 0;
+
+ if (!rtwdev->efuse.usb_mode_switch) {
+ rtw_dbg(rtwdev, RTW_DBG_USB,
+ "Switching to USB 3 mode disabled by chip's efuse\n");
+ return 0;
+ }
+
+ if (!rtw_switch_usb_mode) {
+ rtw_dbg(rtwdev, RTW_DBG_USB,
+ "Switching to USB 3 mode disabled by module parameter\n");
+ return 0;
+ }
+
+ return rtw_usb_switch_mode_new(rtwdev);
+}
+
int rtw_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct rtw_dev *rtwdev;
goto err_destroy_rxwq;
}
+ ret = rtw_usb_switch_mode(rtwdev);
+ if (ret) {
+ /* Not a fail, but we do need to skip rtw_register_hw. */
+ rtw_dbg(rtwdev, RTW_DBG_USB, "switching to USB 3 mode\n");
+ ret = 0;
+ goto err_destroy_rxwq;
+ }
+
ret = rtw_register_hw(rtwdev, rtwdev->hw);
if (ret) {
rtw_err(rtwdev, "failed to register hw\n");
projects / thirdparty / linux.git / commitdiff
