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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-imx/ehci-imx27.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-imx/ehci-imx27.c')
-rw-r--r-- | arch/arm/mach-imx/ehci-imx27.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/ehci-imx27.c b/arch/arm/mach-imx/ehci-imx27.c new file mode 100644 index 00000000..fa69419e --- /dev/null +++ b/arch/arm/mach-imx/ehci-imx27.c @@ -0,0 +1,82 @@ +/* + * 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 MX27_OTG_SIC_SHIFT 29 +#define MX27_OTG_SIC_MASK (0x3 << MX27_OTG_SIC_SHIFT) +#define MX27_OTG_PM_BIT (1 << 24) + +#define MX27_H2_SIC_SHIFT 21 +#define MX27_H2_SIC_MASK (0x3 << MX27_H2_SIC_SHIFT) +#define MX27_H2_PM_BIT (1 << 16) +#define MX27_H2_DT_BIT (1 << 5) + +#define MX27_H1_SIC_SHIFT 13 +#define MX27_H1_SIC_MASK (0x3 << MX27_H1_SIC_SHIFT) +#define MX27_H1_PM_BIT (1 << 8) +#define MX27_H1_DT_BIT (1 << 4) + +int mx27_initialize_usb_hw(int port, unsigned int flags) +{ + unsigned int v; + + v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); + + switch (port) { + case 0: /* OTG port */ + v &= ~(MX27_OTG_SIC_MASK | MX27_OTG_PM_BIT); + v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_OTG_SIC_SHIFT; + + if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) + v |= MX27_OTG_PM_BIT; + break; + case 1: /* H1 port */ + v &= ~(MX27_H1_SIC_MASK | MX27_H1_PM_BIT | MX27_H1_DT_BIT); + v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H1_SIC_SHIFT; + + if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) + v |= MX27_H1_PM_BIT; + + if (!(flags & MXC_EHCI_TTL_ENABLED)) + v |= MX27_H1_DT_BIT; + + break; + case 2: /* H2 port */ + v &= ~(MX27_H2_SIC_MASK | MX27_H2_PM_BIT | MX27_H2_DT_BIT); + v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H2_SIC_SHIFT; + + if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) + v |= MX27_H2_PM_BIT; + + if (!(flags & MXC_EHCI_TTL_ENABLED)) + v |= MX27_H2_DT_BIT; + + break; + default: + return -EINVAL; + } + + writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); + + return 0; +} + |