| Sascha Hauer | cb07625 | 2011-01-03 10:33:01 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> |
| 3 | * Copyright (C) 2010 Freescale Semiconductor, Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your |
| 8 | * option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * for more details. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/io.h> |
| 18 | |
| 19 | #include <mach/hardware.h> |
| 20 | #include <mach/mxc_ehci.h> |
| 21 | |
| 22 | #define USBCTRL_OTGBASE_OFFSET 0x600 |
| 23 | |
| 24 | #define MX31_OTG_SIC_SHIFT 29 |
| 25 | #define MX31_OTG_SIC_MASK (0x3 << MX31_OTG_SIC_SHIFT) |
| 26 | #define MX31_OTG_PM_BIT (1 << 24) |
| 27 | |
| 28 | #define MX31_H2_SIC_SHIFT 21 |
| 29 | #define MX31_H2_SIC_MASK (0x3 << MX31_H2_SIC_SHIFT) |
| 30 | #define MX31_H2_PM_BIT (1 << 16) |
| 31 | #define MX31_H2_DT_BIT (1 << 5) |
| 32 | |
| 33 | #define MX31_H1_SIC_SHIFT 13 |
| 34 | #define MX31_H1_SIC_MASK (0x3 << MX31_H1_SIC_SHIFT) |
| 35 | #define MX31_H1_PM_BIT (1 << 8) |
| 36 | #define MX31_H1_DT_BIT (1 << 4) |
| 37 | |
| 38 | int mx31_initialize_usb_hw(int port, unsigned int flags) |
| 39 | { |
| 40 | unsigned int v; |
| 41 | |
| 42 | v = readl(MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); |
| 43 | |
| 44 | switch (port) { |
| 45 | case 0: /* OTG port */ |
| 46 | v &= ~(MX31_OTG_SIC_MASK | MX31_OTG_PM_BIT); |
| 47 | v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_OTG_SIC_SHIFT; |
| 48 | |
| 49 | if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| 50 | v |= MX31_OTG_PM_BIT; |
| 51 | |
| 52 | break; |
| 53 | case 1: /* H1 port */ |
| 54 | v &= ~(MX31_H1_SIC_MASK | MX31_H1_PM_BIT | MX31_H1_DT_BIT); |
| 55 | v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H1_SIC_SHIFT; |
| 56 | |
| 57 | if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| 58 | v |= MX31_H1_PM_BIT; |
| 59 | |
| 60 | if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| 61 | v |= MX31_H1_DT_BIT; |
| 62 | |
| 63 | break; |
| 64 | case 2: /* H2 port */ |
| 65 | v &= ~(MX31_H2_SIC_MASK | MX31_H2_PM_BIT | MX31_H2_DT_BIT); |
| 66 | v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX31_H2_SIC_SHIFT; |
| 67 | |
| 68 | if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) |
| 69 | v |= MX31_H2_PM_BIT; |
| 70 | |
| 71 | if (!(flags & MXC_EHCI_TTL_ENABLED)) |
| 72 | v |= MX31_H2_DT_BIT; |
| 73 | |
| 74 | break; |
| 75 | default: |
| 76 | return -EINVAL; |
| 77 | } |
| 78 | |
| 79 | writel(v, MX31_IO_ADDRESS(MX31_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); |
| 80 | |
| 81 | return 0; |
| 82 | } |