4  * (C) Copyright 2012-2014
7  * SPDX-License-Identifier:     GPL-2.0+
15 #include <linux/usb/dwc3.h>
16 #include <asm/arch/xhci-keystone.h>
38 	struct dwc3 *dwc3_reg;
44 struct keystone_xhci keystone;  variable
55 	val = readl(&phy->phy_clock);  in keystone_xhci_phy_set()
58 	writel(val, &phy->phy_clock);  in keystone_xhci_phy_set()
66 	val = readl(&phy->phy_clock);  in keystone_xhci_phy_unset()
68 	writel(val, &phy->phy_clock);  in keystone_xhci_phy_unset()
71 static int keystone_xhci_core_init(struct dwc3 *dwc3_reg)  in keystone_xhci_core_init()
78 		return -EINVAL;  in keystone_xhci_core_init()
81 	/* We are hard-coding DWC3 core to Host Mode */  in keystone_xhci_core_init()
101 	val = readl(&(phy->phy_clock));  in xhci_hcd_init()
103 	writel(val, &phy->phy_clock);  in xhci_hcd_init()
111 		return -1;  in xhci_hcd_init()
120 	writel(1, &usbss->sysconfig);  in xhci_hcd_init()
121 	while (readl(&usbss->sysconfig) & 1)  in xhci_hcd_init()
124 	val = readl(&usbss->revision);  in xhci_hcd_init()
129 	keystone.dwc3_reg = (struct dwc3 *)(CONFIG_USB_HOST_XHCI_BASE +  in xhci_hcd_init()
132 	keystone_xhci_core_init(keystone.dwc3_reg);  in xhci_hcd_init()
136 		HC_LENGTH(readl(&hcd->cr_capbase)));  in xhci_hcd_init()
138 	debug("Keystone2-xhci: init hccr %08x and hcor %08x hc_length %d\n",  in xhci_hcd_init()
140 	      (u32)HC_LENGTH(xhci_readl(&hcd->cr_capbase)));  in xhci_hcd_init()
142 	keystone.usbss = usbss;  in xhci_hcd_init()
143 	keystone.phy = phy;  in xhci_hcd_init()
144 	keystone.hcd = hcd;  in xhci_hcd_init()
145 	keystone.hcor = hcor;  in xhci_hcd_init()
160 	struct dwc3 *dwc3_reg = keystone.dwc3_reg;  in keystone_xhci_phy_suspend()
163 	hcor = keystone.hcor;  in keystone_xhci_phy_suspend()
167 	writel(val, &dwc3_reg->g_ctl);  in keystone_xhci_phy_suspend()
170 	val = readl(&dwc3_reg->g_usb2phycfg[0]);  in keystone_xhci_phy_suspend()
174 	writel(val, &dwc3_reg->g_usb2phycfg[0]);  in keystone_xhci_phy_suspend()
177 	val = readl(&dwc3_reg->g_usb3pipectl[0]);  in keystone_xhci_phy_suspend()
184 	writel(val, &dwc3_reg->g_usb3pipectl[0]);  in keystone_xhci_phy_suspend()
189 	 * - Init DCFG[2:0] (DevSpd) to: 1=FS  in keystone_xhci_phy_suspend()
190 	 * - Init GEVNTADR0 to point to an eventQ  in keystone_xhci_phy_suspend()
191 	 * - Init GEVNTSIZ0 to 0x0100 to specify the size of the eventQ  in keystone_xhci_phy_suspend()
192 	 * - Init DCTL::Run_nStop = 1  in keystone_xhci_phy_suspend()
194 	writel(0x00020001, &dwc3_reg->d_cfg);  in keystone_xhci_phy_suspend()
196 	writel((u32)&event_q, &dwc3_reg->g_evnt_buf[0].g_evntadrlo);  in keystone_xhci_phy_suspend()
197 	writel(0, &dwc3_reg->g_evnt_buf[0].g_evntadrhi);  in keystone_xhci_phy_suspend()
198 	writel(0x4, &dwc3_reg->g_evnt_buf[0].g_evntsiz);  in keystone_xhci_phy_suspend()
200 	writel(DWC3_DCTL_RUN_STOP, &dwc3_reg->d_ctl);  in keystone_xhci_phy_suspend()
205 	portsc_1 = (uint32_t *)(&hcor->portregs[0].or_portsc);  in keystone_xhci_phy_suspend()
206 	portsc_2 = (uint32_t *)(&hcor->portregs[1].or_portsc);  in keystone_xhci_phy_suspend()
216 		debug("USB suspend failed - PLS USB2=%02x, USB3=%02x\n",  in keystone_xhci_phy_suspend()
218 		return -1;  in keystone_xhci_phy_suspend()
221 	debug("USB2 and USB3 PLS - Disabled, loop_cnt=%d\n", loop_cnt);  in keystone_xhci_phy_suspend()
237 	keystone_xhci_phy_unset(keystone.phy);  in xhci_hcd_stop()
239 /*	memset(&keystone, 0, sizeof(struct keystone_xhci)); */  in xhci_hcd_stop()