cregit-Linux how code gets into the kernel

Release 4.17 arch/arm/mach-imx/ehci-imx27.c

/*
 * 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 <linux/platform_data/usb-ehci-mxc.h>

#include "ehci.h"
#include "hardware.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; }

Contributors

PersonTokensPropCommitsCommitProp
Sascha Hauer195100.00%1100.00%
Total195100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Sascha Hauer25498.07%133.33%
Shawn Guo51.93%266.67%
Total259100.00%3100.00%
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