73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
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/*
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* arch/arm/mach-iop3xx/common.c
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*
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* Common routines shared across all IOP3xx implementations
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*
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* Author: Deepak Saxena <dsaxena@mvista.com>
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*
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* Copyright 2003 (c) MontaVista, Software, Inc.
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/delay.h>
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#include <asm/hardware.h>
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/*
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* Shared variables
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*/
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unsigned long iop3xx_pcibios_min_io = 0;
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unsigned long iop3xx_pcibios_min_mem = 0;
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#ifdef CONFIG_ARCH_EP80219
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#include <linux/kernel.h>
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/*
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* Default power-off for EP80219
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*/
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static inline void ep80219_send_to_pic(__u8 c) {
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}
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void ep80219_power_off(void)
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{
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/*
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* This function will send a SHUTDOWN_COMPLETE message to the PIC controller
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* over I2C. We are not using the i2c subsystem since we are going to power
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* off and it may be removed
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*/
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/* Send the Address byte w/ the start condition */
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*IOP321_IDBR1 = 0x60;
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*IOP321_ICR1 = 0xE9;
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mdelay(1);
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/* Send the START_MSG byte w/ no start or stop condition */
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*IOP321_IDBR1 = 0x0F;
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*IOP321_ICR1 = 0xE8;
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mdelay(1);
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/* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or stop condition */
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*IOP321_IDBR1 = 0x03;
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*IOP321_ICR1 = 0xE8;
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mdelay(1);
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/* Send an ignored byte w/ stop condition */
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*IOP321_IDBR1 = 0x00;
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*IOP321_ICR1 = 0xEA;
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while (1) ;
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}
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#include <linux/init.h>
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#include <linux/pm.h>
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static int __init ep80219_init(void)
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{
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pm_power_off = ep80219_power_off;
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return 0;
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}
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arch_initcall(ep80219_init);
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#endif
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