linux-kernel - [PATCH 2/2] usb: mtk-xhci: add support remote wakeup of mt8196

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Message-ID: <20241126025507.29605-2-chunfeng.yun@mediatek.com>
Date: Tue, 26 Nov 2024 10:55:07 +0800
From: Chunfeng Yun <chunfeng.yun@...iatek.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Rob Herring
	<robh@...nel.org>
CC: Chunfeng Yun <chunfeng.yun@...iatek.com>, Krzysztof Kozlowski
	<krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Matthias Brugger
	<matthias.bgg@...il.com>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>, Mathias Nyman
	<mathias.nyman@...el.com>, <linux-usb@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] usb: mtk-xhci: add support remote wakeup of mt8196

There are 2 USB controllers on mt8196, each controller's wakeup control is
different, add some specific versions for them.

Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
---
 drivers/usb/host/xhci-mtk.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 3252e3d2d79c..31223912b0b4 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -113,6 +113,12 @@
 #define WC1_IS_P_95		BIT(12)
 #define WC1_IS_EN_P0_95		BIT(6)
 
+/* mt8196 */
+#define PERI_WK_CTRL0_8196	0x08
+#define UWK_V1_7_CTRL2_MASK	0x5
+
+#define WCP1_IS_EN		BIT(7) /* port1 en bit */
+
 /* mt2712 etc */
 #define PERI_SSUSB_SPM_CTRL	0x0
 #define SSC_IP_SLEEP_EN	BIT(4)
@@ -129,6 +135,8 @@ enum ssusb_uwk_vers {
 	SSUSB_UWK_V1_4,		/* mt8195 IP1 */
 	SSUSB_UWK_V1_5,		/* mt8195 IP2 */
 	SSUSB_UWK_V1_6,		/* mt8195 IP3 */
+	SSUSB_UWK_V1_7,		/* mt8196 IP0 */
+	SSUSB_UWK_V1_8,		/* mt8196 IP1 */
 };
 
 /*
@@ -381,6 +389,16 @@ static void usb_wakeup_ip_sleep_set(struct xhci_hcd_mtk *mtk, bool enable)
 		msk = WC0_IS_EN_P3_95 | WC0_IS_C_95(0x7) | WC0_IS_P_95;
 		val = enable ? (WC0_IS_EN_P3_95 | WC0_IS_C_95(0x1)) : 0;
 		break;
+	case SSUSB_UWK_V1_7:
+		reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8196;
+		msk = UWK_V1_7_CTRL2_MASK;
+		val = enable ? msk : 0;
+		break;
+	case SSUSB_UWK_V1_8:
+		reg = mtk->uwk_reg_base + PERI_WK_CTRL0_8196;
+		msk = WCP1_IS_EN;
+		val = enable ? msk : 0;
+		break;
 	case SSUSB_UWK_V2:
 		reg = mtk->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
 		msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;
-- 
2.46.0