[RFC PATCH v1 07/19] rtw88: rtw8822b: Add support for parsing the RTL8822BS (SDIO) efuse

Martin Blumenstingl
2022-12-27T23:31:27Z

The efuse of the SDIO RTL8822BS chip has only one known member: the mac
address is at offset 0x11a. Add a struct rtw8822bs_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>
---
drivers/net/wireless/realtek/rtw88/rtw8822b.c | 10 ++++++++++
drivers/net/wireless/realtek/rtw88/rtw8822b.h | 6 ++++++
2 files changed, 16 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822b.c b/drivers/net/wireless/realtek/rtw88/rtw8822b.c
index 74dfb89b2c94..4ed5b98fab23 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8822b.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822b.c
@@ -26,10 +26,17 @@ static void rtw8822be_efuse_parsing(struct rtw_efuse *efuse,
ether_addr_copy(efuse->addr, map->e.mac_addr);
}

+static void rtw8822bs_efuse_parsing(struct rtw_efuse *efuse,
+ struct rtw8822b_efuse *map)
+{
+ ether_addr_copy(efuse->addr, map->s.mac_addr);
+}
+
static void rtw8822bu_efuse_parsing(struct rtw_efuse *efuse,
struct rtw8822b_efuse *map)
{
ether_addr_copy(efuse->addr, map->u.mac_addr);
+
}

static int rtw8822b_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
@@ -62,6 +69,9 @@ static int rtw8822b_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
case RTW_HCI_TYPE_PCIE:
rtw8822be_efuse_parsing(efuse, map);
break;
+ case RTW_HCI_TYPE_SDIO:
+ rtw8822bs_efuse_parsing(efuse, map);
+ break;
case RTW_HCI_TYPE_USB:
rtw8822bu_efuse_parsing(efuse, map);
break;
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822b.h b/drivers/net/wireless/realtek/rtw88/rtw8822b.h
index 01d3644e0c94..f84bfb6b0df9 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8822b.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822b.h
@@ -65,6 +65,11 @@ struct rtw8822be_efuse {
u8 res7;
};

+struct rtw8822bs_efuse {
+ u8 res4[0x4a]; /* 0xd0 */
+ u8 mac_addr[ETH_ALEN]; /* 0x11a */
+};
+
struct rtw8822b_efuse {
__le16 rtl_id;
u8 res0[0x0e];
@@ -94,6 +99,7 @@ struct rtw8822b_efuse {
union {
struct rtw8822bu_efuse u;
struct rtw8822be_efuse e;
+ struct rtw8822bs_efuse s;
};
};

--
2.39.0