usb: mtu3: add support ip-sleep wakeup for MT8192

Add add support ip-sleep wakeup for MT8192, it's a specific
revision, not following IPM rule.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1616482975-17841-11-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c
index a746beb..0a8cd44 100644 (file)
--- a/drivers/usb/mtu3/mtu3_host.c
+++ b/drivers/usb/mtu3/mtu3_host.c
@@ -30,6 +30,10 @@
 #define WC0_IS_P       BIT(12) /* polarity */
 #define WC0_IS_EN      BIT(6)
 
+/* mt8192 */
+#define WC0_SSUSB0_CDEN                BIT(6)
+#define WC0_IS_SPM_EN          BIT(1)
+
 /* mt2712 etc */
 #define PERI_SSUSB_SPM_CTRL    0x0
 #define SSC_IP_SLEEP_EN        BIT(4)
@@ -39,6 +43,7 @@ enum ssusb_uwk_vers {
        SSUSB_UWK_V1 = 1,
        SSUSB_UWK_V2,
        SSUSB_UWK_V1_1 = 101,   /* specific revision 1.01 */
+       SSUSB_UWK_V1_2,         /* specific revision 1.02 */
 };
 
 /*
@@ -60,6 +65,11 @@ static void ssusb_wakeup_ip_sleep_set(struct ssusb_mtk *ssusb, bool enable)
                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_2:
+               reg = ssusb->uwk_reg_base + PERI_WK_CTRL0;
+               msk = WC0_SSUSB0_CDEN | WC0_IS_SPM_EN;
+               val = enable ? msk : 0;
+               break;
        case SSUSB_UWK_V2:
                reg = ssusb->uwk_reg_base + PERI_SSUSB_SPM_CTRL;
                msk = SSC_IP_SLEEP_EN | SSC_SPM_INT_EN;