2 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include <asm/arch/imx-regs.h>
24 #include <usb/ehci-fsl.h>
28 #include "ehci-core.h"
30 #define USBCTRL_OTGBASE_OFFSET 0x600
32 #define MX31_OTG_SIC_SHIFT 29
33 #define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT)
34 #define MX31_OTG_PM_BIT (1 << 24)
36 #define MX31_H2_SIC_SHIFT 21
37 #define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT)
38 #define MX31_H2_PM_BIT (1 << 16)
39 #define MX31_H2_DT_BIT (1 << 5)
41 #define MX31_H1_SIC_SHIFT 13
42 #define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT)
43 #define MX31_H1_PM_BIT (1 << 8)
44 #define MX31_H1_DT_BIT (1 << 4)
46 static int mxc_set_usbcontrol(int port, unsigned int flags)
50 v = readl(MX31_OTG_BASE_ADDR + USBCTRL_OTGBASE_OFFSET);
53 case 0: /* OTG port */
54 v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT);
55 v |= (flags & MXC_EHCI_INTERFACE_MASK)
56 << MX31_OTG_SIC_SHIFT;
57 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
62 v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT |
64 v |= (flags & MXC_EHCI_INTERFACE_MASK)
66 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
69 if (!(flags & MXC_EHCI_TTL_ENABLED))
74 v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT |
76 v |= (flags & MXC_EHCI_INTERFACE_MASK)
78 if (!(flags & MXC_EHCI_POWER_PINS_ENABLED))
81 if (!(flags & MXC_EHCI_TTL_ENABLED))
89 writel(v, MX31_OTG_BASE_ADDR +
90 USBCTRL_OTGBASE_OFFSET);
95 int ehci_hcd_init(void)
98 struct usb_ehci *ehci;
99 struct clock_control_regs *sc_regs =
100 (struct clock_control_regs *)CCM_BASE;
102 tmp = __raw_readl(&sc_regs->ccmr);
103 __raw_writel(__raw_readl(&sc_regs->ccmr) | (1 << 9), &sc_regs->ccmr) ;
108 ehci = (struct usb_ehci *)(MX31_OTG_BASE_ADDR +
109 (0x200 * CONFIG_MXC_USB_PORT));
110 hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
111 hcor = (struct ehci_hcor *)((uint32_t) hccr +
112 HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
113 setbits_le32(&ehci->usbmode, CM_HOST);
114 setbits_le32(&ehci->control, USB_EN);
116 __raw_writel(CONFIG_MXC_USB_PORTSC, &ehci->portsc);
118 mxc_set_usbcontrol(CONFIG_MXC_USB_PORT, CONFIG_MXC_USB_FLAGS);
126 * Destroy the appropriate control structures corresponding
127 * the the EHCI host controller.
129 int ehci_hcd_stop(void)