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wifi: rtw89: 8851b: add to read efuse version to recognize hardware version B

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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
This commit is contained in:
Ping-Ke Shih
2023-05-12 14:12:15 +08:00
committed by Kalle Valo
parent 103d6e9d61
commit 40bb2ab49c
2 changed files with 22 additions and 0 deletions
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21
drivers/net/wireless/realtek/rtw89/efuse.c
View File

@@ -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 @@ int rtw89_parse_phycap_map(struct rtw89_dev *rtwdev)
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);

1
drivers/net/wireless/realtek/rtw89/efuse.h
View File

@@ -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