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]>
---
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