linux-kernel - [PATCH wireless-next v1 2/4] wifi: rtw88: rtw8723d: Implement RTL8723DS (SDIO) efuse parsing

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Date:   Thu, 18 May 2023 18:17:47 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     linux-wireless@...r.kernel.org
Cc:     linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        ulf.hansson@...aro.org, kvalo@...nel.org, tony0620emma@...il.com,
        Peter Robinson <pbrobinson@...il.com>,
        Ping-Ke Shih <pkshih@...ltek.com>, jernej.skrabec@...il.com,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH wireless-next v1 2/4] wifi: rtw88: rtw8723d: Implement RTL8723DS (SDIO) efuse parsing

The efuse of the SDIO RTL8723DS chip has only one known member: the mac
address is at offset 0x11a. Add a struct rtw8723ds_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/rtw8723d.c | 9 +++++++++
 drivers/net/wireless/realtek/rtw88/rtw8723d.h | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8723d.c b/drivers/net/wireless/realtek/rtw88/rtw8723d.c
index 06e7454c9ca6..cadf66f4e854 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8723d.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8723d.c
@@ -216,6 +216,12 @@ static void rtw8723du_efuse_parsing(struct rtw_efuse *efuse,
 	ether_addr_copy(efuse->addr, map->u.mac_addr);
 }
 
+static void rtw8723ds_efuse_parsing(struct rtw_efuse *efuse,
+				    struct rtw8723d_efuse *map)
+{
+	ether_addr_copy(efuse->addr, map->s.mac_addr);
+}
+
 static int rtw8723d_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
 {
 	struct rtw_efuse *efuse = &rtwdev->efuse;
@@ -248,6 +254,9 @@ static int rtw8723d_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
 	case RTW_HCI_TYPE_USB:
 		rtw8723du_efuse_parsing(efuse, map);
 		break;
+	case RTW_HCI_TYPE_SDIO:
+		rtw8723ds_efuse_parsing(efuse, map);
+		break;
 	default:
 		/* unsupported now */
 		return -ENOTSUPP;
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8723d.h b/drivers/net/wireless/realtek/rtw88/rtw8723d.h
index a356318a5c15..3642a2c7f80c 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8723d.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8723d.h
@@ -49,6 +49,11 @@ struct rtw8723du_efuse {
 	u8 mac_addr[ETH_ALEN];          /* 0x107 */
 };
 
+struct rtw8723ds_efuse {
+	u8 res4[0x4a];			/* 0xd0 */
+	u8 mac_addr[ETH_ALEN];		/* 0x11a */
+};
+
 struct rtw8723d_efuse {
 	__le16 rtl_id;
 	u8 rsvd[2];
@@ -80,6 +85,7 @@ struct rtw8723d_efuse {
 	union {
 		struct rtw8723de_efuse e;
 		struct rtw8723du_efuse u;
+		struct rtw8723ds_efuse s;
 	};
 };
 
-- 
2.40.1