From 0aee4999902a0665387f2c0d734fa52f37cdd8a6 Mon Sep 17 00:00:00 2001
From: Sean Wang <objelf@gmail.com>
Date: Fri, 16 Oct 2020 08:26:42 +0800
Subject: [PATCH] mt76: mt7663s: introduce WoW support via GPIO

SDIO-based WiFi would rely on an additional GPIO pin to wake up the host.

Co-developed-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
 mt7615/mcu.c | 14 ++++++++++++--
 mt7615/mcu.h | 16 ++++++++++++++++
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/mt7615/mcu.c b/mt7615/mcu.c
index 748b9112..164d5142 100644
--- a/mt7615/mcu.c
+++ b/mt7615/mcu.c
@@ -3557,6 +3557,8 @@ int mt7615_mcu_set_hif_suspend(struct mt7615_dev *dev, bool suspend)
 		req.hdr.hif_type = 2;
 	else if (mt76_is_usb(&dev->mt76))
 		req.hdr.hif_type = 1;
+	else if (mt76_is_sdio(&dev->mt76))
+		req.hdr.hif_type = 0;
 
 	return mt76_mcu_send_msg(&dev->mt76, MCU_UNI_CMD_HIF_CTRL, &req,
 				 sizeof(req), true);
@@ -3575,6 +3577,7 @@ mt7615_mcu_set_wow_ctrl(struct mt7615_phy *phy, struct ieee80211_vif *vif,
 			u8 pad[3];
 		} __packed hdr;
 		struct mt7615_wow_ctrl_tlv wow_ctrl_tlv;
+		struct mt7615_wow_gpio_param_tlv gpio_tlv;
 	} req = {
 		.hdr = {
 			.bss_idx = mvif->idx,
@@ -3584,6 +3587,11 @@ mt7615_mcu_set_wow_ctrl(struct mt7615_phy *phy, struct ieee80211_vif *vif,
 			.len = cpu_to_le16(sizeof(struct mt7615_wow_ctrl_tlv)),
 			.cmd = suspend ? 1 : 2,
 		},
+		.gpio_tlv = {
+			.tag = cpu_to_le16(UNI_SUSPEND_WOW_GPIO_PARAM),
+			.len = cpu_to_le16(sizeof(struct mt7615_wow_gpio_param_tlv)),
+			.gpio_pin = 0xff, /* follow fw about GPIO pin */
+		},
 	};
 
 	if (wowlan->magic_pkt)
@@ -3597,9 +3605,11 @@ mt7615_mcu_set_wow_ctrl(struct mt7615_phy *phy, struct ieee80211_vif *vif,
 	}
 
 	if (mt76_is_mmio(&dev->mt76))
-		req.wow_ctrl_tlv.wakeup_hif = 2;
+		req.wow_ctrl_tlv.wakeup_hif = WOW_PCIE;
 	else if (mt76_is_usb(&dev->mt76))
-		req.wow_ctrl_tlv.wakeup_hif = 1;
+		req.wow_ctrl_tlv.wakeup_hif = WOW_USB;
+	else if (mt76_is_sdio(&dev->mt76))
+		req.wow_ctrl_tlv.wakeup_hif = WOW_GPIO;
 
 	return mt76_mcu_send_msg(&dev->mt76, MCU_UNI_CMD_SUSPEND, &req,
 				 sizeof(req), true);
diff --git a/mt7615/mcu.h b/mt7615/mcu.h
index 7b856e9e..59ad6ac1 100644
--- a/mt7615/mcu.h
+++ b/mt7615/mcu.h
@@ -477,6 +477,12 @@ struct mt7615_bss_qos_tlv {
 	u8 pad[3];
 } __packed;
 
+enum {
+	WOW_USB = 1,
+	WOW_PCIE = 2,
+	WOW_GPIO = 3,
+};
+
 struct mt7615_wow_ctrl_tlv {
 	__le16 tag;
 	__le16 len;
@@ -501,6 +507,16 @@ struct mt7615_wow_ctrl_tlv {
 	u8 rsv[4];
 } __packed;
 
+struct mt7615_wow_gpio_param_tlv {
+	__le16 tag;
+	__le16 len;
+	u8 gpio_pin;
+	u8 trigger_lvl;
+	u8 pad[2];
+	__le32 gpio_interval;
+	u8 rsv[4];
+} __packed;
+
 #define MT7615_WOW_MASK_MAX_LEN		16
 #define MT7615_WOW_PATTEN_MAX_LEN	128
 struct mt7615_wow_pattern_tlv {