wifi: rtw88: rtw8822c: Implement RTL8822CS (SDIO) efuse parsing

The efuse of the SDIO RTL8822CS chip has only one known member: the mac
address is at offset 0x16a. Add a struct rtw8822cs_efuse describing this
and use it for copying the mac address when the SDIO bus is used.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230218152944.48842-6-martin.blumenstingl@googlemail.com

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.c b/drivers/net/wireless/realtek/rtw88/rtw8822c.c
index 964e278..5a2c004 100644 (file)
--- a/drivers/net/wireless/realtek/rtw88/rtw8822c.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.c
@@ -35,6 +35,12 @@ static void rtw8822cu_efuse_parsing(struct rtw_efuse *efuse,
        ether_addr_copy(efuse->addr, map->u.mac_addr);
 }
 
+static void rtw8822cs_efuse_parsing(struct rtw_efuse *efuse,
+                                   struct rtw8822c_efuse *map)
+{
+       ether_addr_copy(efuse->addr, map->s.mac_addr);
+}
+
 static int rtw8822c_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
 {
        struct rtw_efuse *efuse = &rtwdev->efuse;
@@ -67,6 +73,9 @@ static int rtw8822c_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
        case RTW_HCI_TYPE_USB:
                rtw8822cu_efuse_parsing(efuse, map);
                break;
+       case RTW_HCI_TYPE_SDIO:
+               rtw8822cs_efuse_parsing(efuse, map);
+               break;
        default:
                /* unsupported now */
                return -ENOTSUPP;

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.h b/drivers/net/wireless/realtek/rtw88/rtw8822c.h
index 479d5d7..1bc0e7f 100644 (file)
--- a/drivers/net/wireless/realtek/rtw88/rtw8822c.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.h
@@ -16,6 +16,11 @@ struct rtw8822cu_efuse {
        u8 res2[0x3d];
 };
 
+struct rtw8822cs_efuse {
+       u8 res0[0x4a];                  /* 0x120 */
+       u8 mac_addr[ETH_ALEN];          /* 0x16a */
+} __packed;
+
 struct rtw8822ce_efuse {
        u8 mac_addr[ETH_ALEN];          /* 0x120 */
        u8 vender_id[2];
@@ -91,8 +96,9 @@ struct rtw8822c_efuse {
        u8 res9;
        u8 res10[0x42];
        union {
-               struct rtw8822cu_efuse u;
                struct rtw8822ce_efuse e;
+               struct rtw8822cu_efuse u;
+               struct rtw8822cs_efuse s;
        };
 };