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

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Date:   Wed, 28 Dec 2022 00:30:08 +0100
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     linux-wireless@...r.kernel.org
Cc:     Yan-Hsuan Chuang <tony0620emma@...il.com>,
        Kalle Valo <kvalo@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-mmc@...r.kernel.org, Chris Morgan <macroalpha82@...il.com>,
        Nitin Gupta <nitin.gupta981@...il.com>,
        Neo Jou <neojou@...il.com>, Pkshih <pkshih@...ltek.com>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [RFC PATCH v1 07/19] rtw88: rtw8822b: Add support for parsing the RTL8822BS (SDIO) efuse

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@...glemail.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