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1da177e4 LT |
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 | ||
15 | #include <linux/config.h> | |
16 | #include <linux/delay.h> | |
17 | #include <asm/hardware.h> | |
18 | ||
19 | /* | |
20 | * Shared variables | |
21 | */ | |
22 | unsigned long iop3xx_pcibios_min_io = 0; | |
23 | unsigned long iop3xx_pcibios_min_mem = 0; | |
24 | ||
25 | #ifdef CONFIG_ARCH_EP80219 | |
26 | #include <linux/kernel.h> | |
27 | /* | |
28 | * Default power-off for EP80219 | |
29 | */ | |
1da177e4 LT |
30 | |
31 | static inline void ep80219_send_to_pic(__u8 c) { | |
32 | } | |
33 | ||
34 | void ep80219_power_off(void) | |
35 | { | |
36 | /* | |
37 | * This function will send a SHUTDOWN_COMPLETE message to the PIC controller | |
38 | * over I2C. We are not using the i2c subsystem since we are going to power | |
39 | * off and it may be removed | |
40 | */ | |
41 | ||
42 | /* Send the Address byte w/ the start condition */ | |
43 | *IOP321_IDBR1 = 0x60; | |
44 | *IOP321_ICR1 = 0xE9; | |
45 | mdelay(1); | |
46 | ||
47 | /* Send the START_MSG byte w/ no start or stop condition */ | |
48 | *IOP321_IDBR1 = 0x0F; | |
49 | *IOP321_ICR1 = 0xE8; | |
50 | mdelay(1); | |
51 | ||
52 | /* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or stop condition */ | |
53 | *IOP321_IDBR1 = 0x03; | |
54 | *IOP321_ICR1 = 0xE8; | |
55 | mdelay(1); | |
56 | ||
57 | /* Send an ignored byte w/ stop condition */ | |
58 | *IOP321_IDBR1 = 0x00; | |
59 | *IOP321_ICR1 = 0xEA; | |
60 | ||
61 | while (1) ; | |
62 | } | |
63 | ||
64 | #include <linux/init.h> | |
65 | #include <linux/pm.h> | |
66 | ||
67 | static int __init ep80219_init(void) | |
68 | { | |
69 | pm_power_off = ep80219_power_off; | |
70 | return 0; | |
71 | } | |
72 | arch_initcall(ep80219_init); | |
73 | #endif |