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USB: Add support for OHCI controller on S3C6400

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Notice: USB on S3C6400 currently works _only_ with switched off MMU. One could
try to enable the MMU, but map addresses 1-to-1, and disable data cache, then
it should work too and we could still profit from instruction cache.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
This commit is contained in:
Guennadi Liakhovetski 2008-08-31 00:39:46 +02:00 committed by Jean-Christophe PLAGNIOL-VILLARD
parent 9b07773f88
commit 8262813ca0
3 changed files with 47 additions and 0 deletions
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1
cpu/arm1176/s3c64xx/Makefile
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@ -30,6 +30,7 @@ LIB = $(obj)lib$(SOC).a
COBJS-y = interrupts.o
COBJS-$(CONFIG_S3C6400) += cpu_init.o speed.o
COBJS-$(CONFIG_USB_OHCI_NEW) += usb.o
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS-y))

45
cpu/arm1176/s3c64xx/usb.c Normal file
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@ -0,0 +1,45 @@
/*
* URB OHCI HCD (Host Controller Driver) initialization for USB on the S3C64XX.
*
* Copyright (C) 2008,
* Guennadi Liakhovetski, DENX Software Engineering <lg@denx.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
#include <common.h>
#include <s3c6400.h>
int usb_cpu_init(void)
{
OTHERS_REG |= 0x10000;
return 0;
}
int usb_cpu_stop(void)
{
OTHERS_REG &= ~0x10000;
return 0;
}
void usb_cpu_init_fail(void)
{
OTHERS_REG &= ~0x10000;
}

1
drivers/usb/usb_ohci.c
View File

@ -69,6 +69,7 @@
#if defined(CONFIG_ARM920T) || \
defined(CONFIG_S3C2400) || \
defined(CONFIG_S3C2410) || \
defined(CONFIG_S3C6400) || \
defined(CONFIG_440EP) || \
defined(CONFIG_PCI_OHCI) || \
defined(CONFIG_MPC5200) || \