From: Yan-Hsuan Chuang <[email protected]> Some modules might not have full programed efuse. Driver should check the BT FT S1 type to know that if BT has been programed. If BT is not programed, throw a warning to notify that this module is not capable of working with WiFi + BT concurrently.
Signed-off-by: Yan-Hsuan Chuang <[email protected]> --- v1 -> v2 no change drivers/net/wireless/realtek/rtw88/efuse.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/net/wireless/realtek/rtw88/efuse.c b/drivers/net/wireless/realtek/rtw88/efuse.c index 66e56f3..82aa26a 100644 --- a/drivers/net/wireless/realtek/rtw88/efuse.c +++ b/drivers/net/wireless/realtek/rtw88/efuse.c @@ -8,6 +8,11 @@ #include "debug.h" #define RTW_EFUSE_BANK_WIFI 0x0 +#define RTW_EFUSE_BANK_BT 0x1 + +#define EFUSE_BT_S1_ADDR 0x4a +#define EFUSE_BT_S1_TYPE1 0xff +#define EFUSE_BT_S1_TYPE2 0x00 static void switch_efuse_bank(struct rtw_dev *rtwdev, u8 efuse_bank) { @@ -89,6 +94,7 @@ static int rtw_dump_physical_efuse_map(struct rtw_dev *rtwdev, u8 *map) u32 efuse_ctl; u32 addr; u32 cnt; + u8 ft_ver; switch_efuse_bank(rtwdev, RTW_EFUSE_BANK_WIFI); @@ -113,6 +119,24 @@ static int rtw_dump_physical_efuse_map(struct rtw_dev *rtwdev, u8 *map) *(map + addr) = (u8)(efuse_ctl & BIT_MASK_EF_DATA); } + /* verify BT FT S1 efuse type */ + switch_efuse_bank(rtwdev, RTW_EFUSE_BANK_BT); + + efuse_ctl = rtw_read32(rtwdev, REG_EFUSE_CTRL); + efuse_ctl &= ~(BIT_MASK_EF_DATA | BITS_EF_ADDR); + efuse_ctl |= (EFUSE_BT_S1_ADDR & BIT_MASK_EF_ADDR) << BIT_SHIFT_EF_ADDR; + rtw_write32(rtwdev, REG_EFUSE_CTRL, efuse_ctl & (~BIT_EF_FLAG)); + + if (!check_hw_ready(rtwdev, REG_EFUSE_CTRL, BIT_EF_FLAG, 0x1)) { + rtw_err(rtwdev, "failed to read BT efuse\n"); + return -EBUSY; + } + + efuse_ctl = rtw_read32(rtwdev, REG_EFUSE_CTRL); + ft_ver = (u8)(efuse_ctl & BIT_MASK_EF_DATA); + if (ft_ver == EFUSE_BT_S1_TYPE1 || ft_ver == EFUSE_BT_S1_TYPE2) + rtw_warn(rtwdev, "BT S1 not calibrated, not recommended to verify BT for this module\n"); + return 0; } -- 2.7.4
