diff options
author | Wim Van Sebroeck <wim@iguana.be> | 2007-08-17 04:38:02 -0400 |
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committer | Wim Van Sebroeck <wim@iguana.be> | 2007-10-18 06:39:03 -0400 |
commit | b7e04f8c61a46d742de23af5d7ca2b41b33e40ac (patch) | |
tree | c52a7ea568648e2d8ed0d423098b42298de2058b /drivers/char/watchdog/mpc8xx_wdt.c | |
parent | d85714d81cc0408daddb68c10f7fd69eafe7c213 (diff) |
mv watchdog tree under drivers
move watchdog tree from drivers/char/watchdog to drivers/watchdog.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/char/watchdog/mpc8xx_wdt.c')
-rw-r--r-- | drivers/char/watchdog/mpc8xx_wdt.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/drivers/char/watchdog/mpc8xx_wdt.c b/drivers/char/watchdog/mpc8xx_wdt.c deleted file mode 100644 index 85b5734403a5..000000000000 --- a/drivers/char/watchdog/mpc8xx_wdt.c +++ /dev/null | |||
@@ -1,169 +0,0 @@ | |||
1 | /* | ||
2 | * mpc8xx_wdt.c - MPC8xx watchdog userspace interface | ||
3 | * | ||
4 | * Author: Florian Schirmer <jolt@tuxbox.org> | ||
5 | * | ||
6 | * 2002 (c) Florian Schirmer <jolt@tuxbox.org> This file is licensed under | ||
7 | * the terms of the GNU General Public License version 2. This program | ||
8 | * is licensed "as is" without any warranty of any kind, whether express | ||
9 | * or implied. | ||
10 | */ | ||
11 | |||
12 | #include <linux/fs.h> | ||
13 | #include <linux/init.h> | ||
14 | #include <linux/kernel.h> | ||
15 | #include <linux/miscdevice.h> | ||
16 | #include <linux/module.h> | ||
17 | #include <linux/watchdog.h> | ||
18 | #include <asm/8xx_immap.h> | ||
19 | #include <asm/uaccess.h> | ||
20 | #include <asm/io.h> | ||
21 | #include <syslib/m8xx_wdt.h> | ||
22 | |||
23 | static unsigned long wdt_opened; | ||
24 | static int wdt_status; | ||
25 | |||
26 | static void mpc8xx_wdt_handler_disable(void) | ||
27 | { | ||
28 | volatile uint __iomem *piscr; | ||
29 | piscr = (uint *)&((immap_t*)IMAP_ADDR)->im_sit.sit_piscr; | ||
30 | |||
31 | if (!m8xx_has_internal_rtc) | ||
32 | m8xx_wdt_stop_timer(); | ||
33 | else | ||
34 | out_be32(piscr, in_be32(piscr) & ~(PISCR_PIE | PISCR_PTE)); | ||
35 | |||
36 | printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler deactivated\n"); | ||
37 | } | ||
38 | |||
39 | static void mpc8xx_wdt_handler_enable(void) | ||
40 | { | ||
41 | volatile uint __iomem *piscr; | ||
42 | piscr = (uint *)&((immap_t*)IMAP_ADDR)->im_sit.sit_piscr; | ||
43 | |||
44 | if (!m8xx_has_internal_rtc) | ||
45 | m8xx_wdt_install_timer(); | ||
46 | else | ||
47 | out_be32(piscr, in_be32(piscr) | PISCR_PIE | PISCR_PTE); | ||
48 | |||
49 | printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler activated\n"); | ||
50 | } | ||
51 | |||
52 | static int mpc8xx_wdt_open(struct inode *inode, struct file *file) | ||
53 | { | ||
54 | if (test_and_set_bit(0, &wdt_opened)) | ||
55 | return -EBUSY; | ||
56 | |||
57 | m8xx_wdt_reset(); | ||
58 | mpc8xx_wdt_handler_disable(); | ||
59 | |||
60 | return nonseekable_open(inode, file); | ||
61 | } | ||
62 | |||
63 | static int mpc8xx_wdt_release(struct inode *inode, struct file *file) | ||
64 | { | ||
65 | m8xx_wdt_reset(); | ||
66 | |||
67 | #if !defined(CONFIG_WATCHDOG_NOWAYOUT) | ||
68 | mpc8xx_wdt_handler_enable(); | ||
69 | #endif | ||
70 | |||
71 | clear_bit(0, &wdt_opened); | ||
72 | |||
73 | return 0; | ||
74 | } | ||
75 | |||
76 | static ssize_t mpc8xx_wdt_write(struct file *file, const char *data, size_t len, | ||
77 | loff_t * ppos) | ||
78 | { | ||
79 | if (len) | ||
80 | m8xx_wdt_reset(); | ||
81 | |||
82 | return len; | ||
83 | } | ||
84 | |||
85 | static int mpc8xx_wdt_ioctl(struct inode *inode, struct file *file, | ||
86 | unsigned int cmd, unsigned long arg) | ||
87 | { | ||
88 | int timeout; | ||
89 | static struct watchdog_info info = { | ||
90 | .options = WDIOF_KEEPALIVEPING, | ||
91 | .firmware_version = 0, | ||
92 | .identity = "MPC8xx watchdog", | ||
93 | }; | ||
94 | |||
95 | switch (cmd) { | ||
96 | case WDIOC_GETSUPPORT: | ||
97 | if (copy_to_user((void *)arg, &info, sizeof(info))) | ||
98 | return -EFAULT; | ||
99 | break; | ||
100 | |||
101 | case WDIOC_GETSTATUS: | ||
102 | case WDIOC_GETBOOTSTATUS: | ||
103 | if (put_user(wdt_status, (int *)arg)) | ||
104 | return -EFAULT; | ||
105 | wdt_status &= ~WDIOF_KEEPALIVEPING; | ||
106 | break; | ||
107 | |||
108 | case WDIOC_GETTEMP: | ||
109 | return -EOPNOTSUPP; | ||
110 | |||
111 | case WDIOC_SETOPTIONS: | ||
112 | return -EOPNOTSUPP; | ||
113 | |||
114 | case WDIOC_KEEPALIVE: | ||
115 | m8xx_wdt_reset(); | ||
116 | wdt_status |= WDIOF_KEEPALIVEPING; | ||
117 | break; | ||
118 | |||
119 | case WDIOC_SETTIMEOUT: | ||
120 | return -EOPNOTSUPP; | ||
121 | |||
122 | case WDIOC_GETTIMEOUT: | ||
123 | timeout = m8xx_wdt_get_timeout(); | ||
124 | if (put_user(timeout, (int *)arg)) | ||
125 | return -EFAULT; | ||
126 | break; | ||
127 | |||
128 | default: | ||
129 | return -ENOTTY; | ||
130 | } | ||
131 | |||
132 | return 0; | ||
133 | } | ||
134 | |||
135 | static const struct file_operations mpc8xx_wdt_fops = { | ||
136 | .owner = THIS_MODULE, | ||
137 | .llseek = no_llseek, | ||
138 | .write = mpc8xx_wdt_write, | ||
139 | .ioctl = mpc8xx_wdt_ioctl, | ||
140 | .open = mpc8xx_wdt_open, | ||
141 | .release = mpc8xx_wdt_release, | ||
142 | }; | ||
143 | |||
144 | static struct miscdevice mpc8xx_wdt_miscdev = { | ||
145 | .minor = WATCHDOG_MINOR, | ||
146 | .name = "watchdog", | ||
147 | .fops = &mpc8xx_wdt_fops, | ||
148 | }; | ||
149 | |||
150 | static int __init mpc8xx_wdt_init(void) | ||
151 | { | ||
152 | return misc_register(&mpc8xx_wdt_miscdev); | ||
153 | } | ||
154 | |||
155 | static void __exit mpc8xx_wdt_exit(void) | ||
156 | { | ||
157 | misc_deregister(&mpc8xx_wdt_miscdev); | ||
158 | |||
159 | m8xx_wdt_reset(); | ||
160 | mpc8xx_wdt_handler_enable(); | ||
161 | } | ||
162 | |||
163 | module_init(mpc8xx_wdt_init); | ||
164 | module_exit(mpc8xx_wdt_exit); | ||
165 | |||
166 | MODULE_AUTHOR("Florian Schirmer <jolt@tuxbox.org>"); | ||
167 | MODULE_DESCRIPTION("MPC8xx watchdog driver"); | ||
168 | MODULE_LICENSE("GPL"); | ||
169 | MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); | ||