diff options
| author | Ping-Ke Shih <pkshih@realtek.com> | 2023-05-12 14:12:15 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2023-05-17 11:05:57 +0300 |
| commit | 40bb2ab49c369b78d1cb37ed63b8a85f3102b239 (patch) | |
| tree | 4059c206b26ff08ccd14de8bc6245b03e3da6cf5 /drivers/net/wireless/realtek | |
| parent | 103d6e9d61e012d9f7d0aae33529924f9a3d78d9 (diff) | |
wifi: rtw89: 8851b: add to read efuse version to recognize hardware version B
8851B hardware version A and B use different firmware, but register version
code of these two are the same, so add this helper to read efuse version to
determine which version is installed.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230512061220.16544-2-pkshih@realtek.com
Diffstat (limited to 'drivers/net/wireless/realtek')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/efuse.c | 21 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/efuse.h | 1 |
2 files changed, 22 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); diff --git a/drivers/net/wireless/realtek/rtw89/efuse.h b/drivers/net/wireless/realtek/rtw89/efuse.h index 622ff95e7476..79071aff28de 100644 --- a/drivers/net/wireless/realtek/rtw89/efuse.h +++ b/drivers/net/wireless/realtek/rtw89/efuse.h @@ -9,5 +9,6 @@ int rtw89_parse_efuse_map(struct rtw89_dev *rtwdev); int rtw89_parse_phycap_map(struct rtw89_dev *rtwdev); +int rtw89_read_efuse_ver(struct rtw89_dev *rtwdev, u8 *efv); #endif |