diff options
Diffstat (limited to 'arch/arm/mach-imx/ehci-imx25.c')
| -rw-r--r-- | arch/arm/mach-imx/ehci-imx25.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/ehci-imx25.c b/arch/arm/mach-imx/ehci-imx25.c new file mode 100644 index 000000000000..865daf0b09e9 --- /dev/null +++ b/arch/arm/mach-imx/ehci-imx25.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> + * Copyright (C) 2010 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include <linux/platform_device.h> +#include <linux/io.h> + +#include <mach/hardware.h> +#include <mach/mxc_ehci.h> + +#define USBCTRL_OTGBASE_OFFSET 0x600 + +#define MX25_OTG_SIC_SHIFT 29 +#define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT) +#define MX25_OTG_PM_BIT (1 << 24) + +#define MX25_H1_SIC_SHIFT 21 +#define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT) +#define MX25_H1_PM_BIT (1 << 8) +#define MX25_H1_IPPUE_UP_BIT (1 << 7) +#define MX25_H1_IPPUE_DOWN_BIT (1 << 6) +#define MX25_H1_TLL_BIT (1 << 5) +#define MX25_H1_USBTE_BIT (1 << 4) + +int mx25_initialize_usb_hw(int port, unsigned int flags) +{ + unsigned int v; + + v = readl(MX25_IO_ADDRESS(MX25_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); + + switch (port) { + case 0: /* OTG port */ + v &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PM_BIT); + v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT; + + if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) + v |= MX25_OTG_PM_BIT; + + break; + case 1: /* H1 port */ + v &= ~(MX25_H1_SIC_MASK | MX25_H1_PM_BIT | MX25_H1_TLL_BIT | + MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT | MX25_H1_IPPUE_UP_BIT); + v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT; + + if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) + v |= MX25_H1_PM_BIT; + + if (!(flags & MXC_EHCI_TTL_ENABLED)) + v |= MX25_H1_TLL_BIT; + + if (flags & MXC_EHCI_INTERNAL_PHY) + v |= MX25_H1_USBTE_BIT; + + if (flags & MXC_EHCI_IPPUE_DOWN) + v |= MX25_H1_IPPUE_DOWN_BIT; + + if (flags & MXC_EHCI_IPPUE_UP) + v |= MX25_H1_IPPUE_UP_BIT; + + break; + default: + return -EINVAL; + } + + writel(v, MX25_IO_ADDRESS(MX25_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); + + return 0; +} + |