/* only port0 of U2/U3 supports device mode */ static int mtu3_device_enable(struct mtu3 *mtu) { void __iomem *ibase = mtu->ippc_base; u32 check_clk = 0; mtu3_clrbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); if (mtu->is_u3_ip) { check_clk = SSUSB_U3_MAC_RST_B_STS; mtu3_clrbits(ibase, SSUSB_U3_CTRL(0), (SSUSB_U3_PORT_DIS | SSUSB_U3_PORT_PDN | SSUSB_U3_PORT_HOST_SEL)); } mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), (SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN | SSUSB_U2_PORT_HOST_SEL)); if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) { mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); if (mtu->is_u3_ip) mtu3_setbits(ibase, SSUSB_U3_CTRL(0), SSUSB_U3_PORT_DUAL_MODE); } return ssusb_check_clocks(mtu->ssusb, check_clk); }
static void switch_port_to_device(struct ssusb_mtk *ssusb) { u32 check_clk = 0; dev_dbg(ssusb->dev, "%s\n", __func__); ssusb_port0_switch(ssusb, USB2_PORT, false); if (ssusb->otg_switch.is_u3_drd) { ssusb_port0_switch(ssusb, USB3_PORT, false); check_clk = SSUSB_U3_MAC_RST_B_STS; } ssusb_check_clocks(ssusb, check_clk); }
static void switch_port_to_host(struct ssusb_mtk *ssusb) { u32 check_clk = 0; dev_dbg(ssusb->dev, "%s\n", __func__); ssusb_port0_switch(ssusb, USB2_PORT, true); if (ssusb->otg_switch.is_u3_drd) { ssusb_port0_switch(ssusb, USB3_PORT, true); check_clk = SSUSB_U3_MAC_RST_B_STS; } ssusb_check_clocks(ssusb, check_clk); /* after all clocks are stable */ toggle_opstate(ssusb); }