[RFC PATCH v1 06/19] rtw88: rtw8821c: Add support for parsing the RTL8821CS (SDIO) efuse

Martin Blumenstingl
2022-12-27T23:31:22Z

The efuse of the SDIO RTL8821CS chip has only one known member: the mac
address is at offset 0x11a. Add a struct rtw8821cs_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/rtw8821c.c | 9 +++++++++
drivers/net/wireless/realtek/rtw88/rtw8821c.h | 6 ++++++
2 files changed, 15 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8821c.c b/drivers/net/wireless/realtek/rtw88/rtw8821c.c
index 17f800f6efbd..dd01b22f9770 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8821c.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8821c.c
@@ -26,6 +26,12 @@ static void rtw8821ce_efuse_parsing(struct rtw_efuse *efuse,
ether_addr_copy(efuse->addr, map->e.mac_addr);
}

+static void rtw8821cs_efuse_parsing(struct rtw_efuse *efuse,
+ struct rtw8821c_efuse *map)
+{
+ ether_addr_copy(efuse->addr, map->s.mac_addr);
+}
+
static void rtw8821cu_efuse_parsing(struct rtw_efuse *efuse,
struct rtw8821c_efuse *map)
{
@@ -74,6 +80,9 @@ static int rtw8821c_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
case RTW_HCI_TYPE_PCIE:
rtw8821ce_efuse_parsing(efuse, map);
break;
+ case RTW_HCI_TYPE_SDIO:
+ rtw8821cs_efuse_parsing(efuse, map);
+ break;
case RTW_HCI_TYPE_USB:
rtw8821cu_efuse_parsing(efuse, map);
break;
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8821c.h b/drivers/net/wireless/realtek/rtw88/rtw8821c.h
index 1c81260f3a54..1deea54575b5 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8821c.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8821c.h
@@ -65,6 +65,11 @@ struct rtw8821ce_efuse {
u8 res7;
};

+struct rtw8821cs_efuse {
+ u8 res4[0x4a]; /* 0xd0 */
+ u8 mac_addr[ETH_ALEN]; /* 0x11a */
+};
+
struct rtw8821c_efuse {
__le16 rtl_id;
u8 res0[0x0e];
@@ -93,6 +98,7 @@ struct rtw8821c_efuse {
u8 res[3];
union {
struct rtw8821ce_efuse e;
+ struct rtw8821cs_efuse s;
struct rtw8821cu_efuse u;
};
};
--
2.39.0