Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Chunfeng Yun <chunfeng.yun@mediatek.com>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Rob Herring <robh+dt@kernel.org>
CC:     Mark Rutland <mark.rutland@arm.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Mathias Nyman <mathias.nyman@intel.com>,
        Chunfeng Yun <chunfeng.yun@mediatek.com>,
        <linux-usb@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
Subject: [PATCH v2 4/7] usb: mtk-xhci: support ip-sleep wakeup for MT8183
Date:   Wed, 28 Aug 2019 15:34:28 +0800
Message-ID: <1566977671-22191-5-git-send-email-chunfeng.yun@mediatek.com>
In-Reply-To: <1566977671-22191-1-git-send-email-chunfeng.yun@mediatek.com>
References: <1566977671-22191-1-git-send-email-chunfeng.yun@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Support USB wakeup by ip-sleep mode for MT8183, it's similar to
MT8173

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2: no changes
---
 drivers/usb/host/xhci-mtk.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 026fe18972d3..4b59f2978954 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -57,6 +57,12 @@
 #define CTRL_U2_FORCE_PLL_STB	BIT(28)
 
 /* usb remote wakeup registers in syscon */
+/* mt8183 etc */
+#define PERI_WK_CTRL0	0x20
+#define WC0_IS_C(x)	(((x) & 0xf) << 28)  /* cycle debounce */
+#define WC0_IS_EN	BIT(12)
+#define WC0_IS_P	BIT(6)  /* polarity for ip sleep */
+
 /* mt8173 etc */
 #define PERI_WK_CTRL1	0x4
 #define WC1_IS_C(x)	(((x) & 0xf) << 26)  /* cycle debounce */
@@ -69,7 +75,8 @@
 #define SSC_SPM_INT_EN		BIT(1)
 
 enum ssusb_uwk_vers {
-	SSUSB_UWK_V1 = 1,
+	SSUSB_UWK_V0 = 0,
+	SSUSB_UWK_V1,
 	SSUSB_UWK_V2,
 };
 
@@ -282,6 +289,11 @@ static void usb_wakeup_ip_sleep_set(struct xhci_hcd_mtk *mtk, bool enable)
 	u32 reg, msk, val;
 
 	switch (mtk->uwk_vers) {
+	case SSUSB_UWK_V0:
+		reg = mtk->uwk_reg_base + PERI_WK_CTRL0;
+		msk = WC0_IS_EN | WC0_IS_C(0xf) | WC0_IS_P;
+		val = enable ? (WC0_IS_EN | WC0_IS_C(0x8)) : 0;
+		break;
 	case SSUSB_UWK_V1:
 		reg = mtk->uwk_reg_base + PERI_WK_CTRL1;
 		msk = WC1_IS_EN | WC1_IS_C(0xf) | WC1_IS_P;
-- 
2.23.0