diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/efuse.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/efuse.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/efuse.c b/drivers/net/wireless/realtek/rtw89/efuse.c index 7bd4f8558e03..2aaf4d013e46 100644 --- a/drivers/net/wireless/realtek/rtw89/efuse.c +++ b/drivers/net/wireless/realtek/rtw89/efuse.c @@ -7,6 +7,10 @@ #include "mac.h" #include "reg.h" +#define EF_FV_OFSET 0x5ea +#define EF_CV_MASK GENMASK(7, 4) +#define EF_CV_INV 15 + enum rtw89_efuse_bank { RTW89_EFUSE_BANK_WIFI, RTW89_EFUSE_BANK_BT, @@ -328,3 +332,20 @@ out_free: return ret; } + +int rtw89_read_efuse_ver(struct rtw89_dev *rtwdev, u8 *ecv) +{ + int ret; + u8 val; + + ret = rtw89_dump_physical_efuse_map(rtwdev, &val, EF_FV_OFSET, 1, false); + if (ret) + return ret; + + *ecv = u8_get_bits(val, EF_CV_MASK); + if (*ecv == EF_CV_INV) + return -ENOENT; + + return 0; +} +EXPORT_SYMBOL(rtw89_read_efuse_ver); |