From cb07625d1f84fb48e6849cb530762ffcc6f8e458 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 3 Jan 2011 10:33:01 +0100 Subject: ARM i.MX ehci: factor out soc specific functions Currently we have a mxc_initialize_usb_hw which is called on every i.MX SoC. This function dispatches the different SoC types, which is quite ugly. This patch moves the SoC specific USB initialization to their correspondive mach directories. Signed-off-by: Sascha Hauer --- arch/arm/mach-mx3/ehci-imx35.c | 80 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 arch/arm/mach-mx3/ehci-imx35.c (limited to 'arch/arm/mach-mx3/ehci-imx35.c') diff --git a/arch/arm/mach-mx3/ehci-imx35.c b/arch/arm/mach-mx3/ehci-imx35.c new file mode 100644 index 00000000000..33983a478c6 --- /dev/null +++ b/arch/arm/mach-mx3/ehci-imx35.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2009 Daniel Mack + * 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 +#include + +#include +#include + +#define USBCTRL_OTGBASE_OFFSET 0x600 + +#define MX35_OTG_SIC_SHIFT 29 +#define MX35_OTG_SIC_MASK (0x3 << MX35_OTG_SIC_SHIFT) +#define MX35_OTG_PM_BIT (1 << 24) + +#define MX35_H1_SIC_SHIFT 21 +#define MX35_H1_SIC_MASK (0x3 << MX35_H1_SIC_SHIFT) +#define MX35_H1_PM_BIT (1 << 8) +#define MX35_H1_IPPUE_UP_BIT (1 << 7) +#define MX35_H1_IPPUE_DOWN_BIT (1 << 6) +#define MX35_H1_TLL_BIT (1 << 5) +#define MX35_H1_USBTE_BIT (1 << 4) + +int mx35_initialize_usb_hw(int port, unsigned int flags) +{ + unsigned int v; + + v = readl(MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); + + switch (port) { + case 0: /* OTG port */ + v &= ~(MX35_OTG_SIC_MASK | MX35_OTG_PM_BIT); + v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_OTG_SIC_SHIFT; + + if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) + v |= MX35_OTG_PM_BIT; + + break; + case 1: /* H1 port */ + v &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT | + MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT); + v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX35_H1_SIC_SHIFT; + + if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) + v |= MX35_H1_PM_BIT; + + if (!(flags & MXC_EHCI_TTL_ENABLED)) + v |= MX35_H1_TLL_BIT; + + if (flags & MXC_EHCI_INTERNAL_PHY) + v |= MX35_H1_USBTE_BIT; + + if (flags & MXC_EHCI_IPPUE_DOWN) + v |= MX35_H1_IPPUE_DOWN_BIT; + + if (flags & MXC_EHCI_IPPUE_UP) + v |= MX35_H1_IPPUE_UP_BIT; + + break; + default: + return -EINVAL; + } + + writel(v, MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); + + return 0; +} + -- cgit v1.2.3