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/*
* arch/arm/mach-iop32x/common.c
*
* Common routines shared across all IOP3xx implementations
*
* Author: Deepak Saxena <dsaxena@mvista.com>
*
* Copyright 2003 (c) MontaVista, Software, Inc.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/delay.h>
#include <asm/hardware.h>
#include <asm/hardware/iop3xx.h>
#ifdef CONFIG_ARCH_EP80219
#include <linux/kernel.h>
/*
* Default power-off for EP80219
*/
static inline void ep80219_send_to_pic(__u8 c) {
}
void ep80219_power_off(void)
{
/*
* This function will send a SHUTDOWN_COMPLETE message to the PIC controller
* over I2C. We are not using the i2c subsystem since we are going to power
* off and it may be removed
*/
/* Send the Address byte w/ the start condition */
*IOP3XX_IDBR1 = 0x60;
*IOP3XX_ICR1 = 0xE9;
mdelay(1);
/* Send the START_MSG byte w/ no start or stop condition */
*IOP3XX_IDBR1 = 0x0F;
*IOP3XX_ICR1 = 0xE8;
mdelay(1);
/* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or stop condition */
*IOP3XX_IDBR1 = 0x03;
*IOP3XX_ICR1 = 0xE8;
mdelay(1);
/* Send an ignored byte w/ stop condition */
*IOP3XX_IDBR1 = 0x00;
*IOP3XX_ICR1 = 0xEA;
while (1) ;
}
#include <linux/init.h>
#include <linux/pm.h>
static int __init ep80219_init(void)
{
pm_power_off = ep80219_power_off;
return 0;
}
arch_initcall(ep80219_init);
#endif
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