[RFC PATCH v1 08/19] rtw88: rtw8822c: Add support for parsing the RTL8822CS (SDIO) efuse

Martin Blumenstingl
2022-12-27T23:31:38Z

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>
---
drivers/net/wireless/realtek/rtw88/rtw8822c.c | 9 +++++++++
drivers/net/wireless/realtek/rtw88/rtw8822c.h | 6 ++++++
2 files changed, 15 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.c b/drivers/net/wireless/realtek/rtw88/rtw8822c.c
index 964e27887fe2..8ec779c7ab84 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8822c.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.c
@@ -29,6 +29,12 @@ static void rtw8822ce_efuse_parsing(struct rtw_efuse *efuse,
ether_addr_copy(efuse->addr, map->e.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 void rtw8822cu_efuse_parsing(struct rtw_efuse *efuse,
struct rtw8822c_efuse *map)
{
@@ -64,6 +70,9 @@ static int rtw8822c_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
case RTW_HCI_TYPE_PCIE:
rtw8822ce_efuse_parsing(efuse, map);
break;
+ case RTW_HCI_TYPE_SDIO:
+ rtw8822cs_efuse_parsing(efuse, map);
+ break;
case RTW_HCI_TYPE_USB:
rtw8822cu_efuse_parsing(efuse, map);
break;
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.h b/drivers/net/wireless/realtek/rtw88/rtw8822c.h
index 479d5d769c52..eec2e3074087 100644
--- 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 */
+};
+
struct rtw8822ce_efuse {
u8 mac_addr[ETH_ALEN]; /* 0x120 */
u8 vender_id[2];
@@ -92,6 +97,7 @@ struct rtw8822c_efuse {
u8 res10[0x42];
union {
struct rtw8822cu_efuse u;
+ struct rtw8822cs_efuse s;
struct rtw8822ce_efuse e;
};
};
--
2.39.0