From 8262813ca04fc57f5d8856e1828085c136e0f1eb Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Sun, 31 Aug 2008 00:39:46 +0200 Subject: USB: Add support for OHCI controller on S3C6400 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 --- cpu/arm1176/s3c64xx/Makefile | 1 + cpu/arm1176/s3c64xx/usb.c | 45 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) create mode 100644 cpu/arm1176/s3c64xx/usb.c (limited to 'cpu/arm1176') diff --git a/cpu/arm1176/s3c64xx/Makefile b/cpu/arm1176/s3c64xx/Makefile index fa4ee3f24..4ab181159 100644 --- a/cpu/arm1176/s3c64xx/Makefile +++ b/cpu/arm1176/s3c64xx/Makefile @@ -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)) diff --git a/cpu/arm1176/s3c64xx/usb.c b/cpu/arm1176/s3c64xx/usb.c new file mode 100644 index 000000000..274a4ed30 --- /dev/null +++ b/cpu/arm1176/s3c64xx/usb.c @@ -0,0 +1,45 @@ +/* + * URB OHCI HCD (Host Controller Driver) initialization for USB on the S3C64XX. + * + * Copyright (C) 2008, + * Guennadi Liakhovetski, DENX Software Engineering + * + * 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 +#include + +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; +} -- cgit v1.2.3