41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
|
|
This module implements an interface to the SPI on the lpc22xx.
|
|
Copyright (C) 2006 Embedded Artists AB (www.embeddedartists.com)
|
|
|
|
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 <config.h>
|
|
#include <common.h>
|
|
#include <asm/errno.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/spi.h>
|
|
|
|
unsigned long spi_flags;
|
|
unsigned char spi_idle = 0x00;
|
|
|
|
int spi_init(void)
|
|
{
|
|
unsigned long pinsel0_value;
|
|
|
|
/* activate spi pins */
|
|
pinsel0_value = GET32(PINSEL0);
|
|
pinsel0_value &= ~(0xFFl << 8);
|
|
pinsel0_value |= (0x55l << 8);
|
|
PUT32(PINSEL0, pinsel0_value);
|
|
|
|
return 0;
|
|
}
|