| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-iop3xx/common.c |
| 3 | * |
| 4 | * Common routines shared across all IOP3xx implementations |
| 5 | * |
| 6 | * Author: Deepak Saxena <dsaxena@mvista.com> |
| 7 | * |
| 8 | * Copyright 2003 (c) MontaVista, Software, Inc. |
| 9 | * |
| 10 | * This file is licensed under the terms of the GNU General Public |
| 11 | * License version 2. This program is licensed "as is" without any |
| 12 | * warranty of any kind, whether express or implied. |
| 13 | */ |
| 14 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <linux/delay.h> |
| 16 | #include <asm/hardware.h> |
| 17 | |
| 18 | /* |
| 19 | * Shared variables |
| 20 | */ |
| 21 | unsigned long iop3xx_pcibios_min_io = 0; |
| 22 | unsigned long iop3xx_pcibios_min_mem = 0; |
| 23 | |
| 24 | #ifdef CONFIG_ARCH_EP80219 |
| 25 | #include <linux/kernel.h> |
| 26 | /* |
| 27 | * Default power-off for EP80219 |
| 28 | */ |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | static inline void ep80219_send_to_pic(__u8 c) { |
| 31 | } |
| 32 | |
| 33 | void ep80219_power_off(void) |
| 34 | { |
| 35 | /* |
| 36 | * This function will send a SHUTDOWN_COMPLETE message to the PIC controller |
| 37 | * over I2C. We are not using the i2c subsystem since we are going to power |
| 38 | * off and it may be removed |
| 39 | */ |
| 40 | |
| 41 | /* Send the Address byte w/ the start condition */ |
| 42 | *IOP321_IDBR1 = 0x60; |
| 43 | *IOP321_ICR1 = 0xE9; |
| 44 | mdelay(1); |
| 45 | |
| 46 | /* Send the START_MSG byte w/ no start or stop condition */ |
| 47 | *IOP321_IDBR1 = 0x0F; |
| 48 | *IOP321_ICR1 = 0xE8; |
| 49 | mdelay(1); |
| 50 | |
| 51 | /* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or stop condition */ |
| 52 | *IOP321_IDBR1 = 0x03; |
| 53 | *IOP321_ICR1 = 0xE8; |
| 54 | mdelay(1); |
| 55 | |
| 56 | /* Send an ignored byte w/ stop condition */ |
| 57 | *IOP321_IDBR1 = 0x00; |
| 58 | *IOP321_ICR1 = 0xEA; |
| 59 | |
| 60 | while (1) ; |
| 61 | } |
| 62 | |
| 63 | #include <linux/init.h> |
| 64 | #include <linux/pm.h> |
| 65 | |
| 66 | static int __init ep80219_init(void) |
| 67 | { |
| 68 | pm_power_off = ep80219_power_off; |
| 69 | return 0; |
| 70 | } |
| 71 | arch_initcall(ep80219_init); |
| 72 | #endif |