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path: root/drivers/acpi/fan.c
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Diffstat (limited to 'drivers/acpi/fan.c')
-rw-r--r--drivers/acpi/fan.c142
1 files changed, 57 insertions, 85 deletions
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 14192ee55f8f..e8165c4f162a 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -34,52 +34,45 @@
34#include <acpi/acpi_bus.h> 34#include <acpi/acpi_bus.h>
35#include <acpi/acpi_drivers.h> 35#include <acpi/acpi_drivers.h>
36 36
37
38#define ACPI_FAN_COMPONENT 0x00200000 37#define ACPI_FAN_COMPONENT 0x00200000
39#define ACPI_FAN_CLASS "fan" 38#define ACPI_FAN_CLASS "fan"
40#define ACPI_FAN_HID "PNP0C0B"
41#define ACPI_FAN_DRIVER_NAME "ACPI Fan Driver" 39#define ACPI_FAN_DRIVER_NAME "ACPI Fan Driver"
42#define ACPI_FAN_DEVICE_NAME "Fan"
43#define ACPI_FAN_FILE_STATE "state" 40#define ACPI_FAN_FILE_STATE "state"
44#define ACPI_FAN_NOTIFY_STATUS 0x80
45 41
46#define _COMPONENT ACPI_FAN_COMPONENT 42#define _COMPONENT ACPI_FAN_COMPONENT
47ACPI_MODULE_NAME ("acpi_fan") 43ACPI_MODULE_NAME("acpi_fan")
48 44
49MODULE_AUTHOR("Paul Diefenbaugh"); 45 MODULE_AUTHOR("Paul Diefenbaugh");
50MODULE_DESCRIPTION(ACPI_FAN_DRIVER_NAME); 46MODULE_DESCRIPTION(ACPI_FAN_DRIVER_NAME);
51MODULE_LICENSE("GPL"); 47MODULE_LICENSE("GPL");
52 48
53static int acpi_fan_add (struct acpi_device *device); 49static int acpi_fan_add(struct acpi_device *device);
54static int acpi_fan_remove (struct acpi_device *device, int type); 50static int acpi_fan_remove(struct acpi_device *device, int type);
55 51
56static struct acpi_driver acpi_fan_driver = { 52static struct acpi_driver acpi_fan_driver = {
57 .name = ACPI_FAN_DRIVER_NAME, 53 .name = ACPI_FAN_DRIVER_NAME,
58 .class = ACPI_FAN_CLASS, 54 .class = ACPI_FAN_CLASS,
59 .ids = ACPI_FAN_HID, 55 .ids = "PNP0C0B",
60 .ops = { 56 .ops = {
61 .add = acpi_fan_add, 57 .add = acpi_fan_add,
62 .remove = acpi_fan_remove, 58 .remove = acpi_fan_remove,
63 }, 59 },
64}; 60};
65 61
66struct acpi_fan { 62struct acpi_fan {
67 acpi_handle handle; 63 acpi_handle handle;
68}; 64};
69 65
70
71/* -------------------------------------------------------------------------- 66/* --------------------------------------------------------------------------
72 FS Interface (/proc) 67 FS Interface (/proc)
73 -------------------------------------------------------------------------- */ 68 -------------------------------------------------------------------------- */
74 69
75static struct proc_dir_entry *acpi_fan_dir; 70static struct proc_dir_entry *acpi_fan_dir;
76 71
77 72static int acpi_fan_read_state(struct seq_file *seq, void *offset)
78static int
79acpi_fan_read_state (struct seq_file *seq, void *offset)
80{ 73{
81 struct acpi_fan *fan = seq->private; 74 struct acpi_fan *fan = seq->private;
82 int state = 0; 75 int state = 0;
83 76
84 ACPI_FUNCTION_TRACE("acpi_fan_read_state"); 77 ACPI_FUNCTION_TRACE("acpi_fan_read_state");
85 78
@@ -88,7 +81,7 @@ acpi_fan_read_state (struct seq_file *seq, void *offset)
88 seq_printf(seq, "status: ERROR\n"); 81 seq_printf(seq, "status: ERROR\n");
89 else 82 else
90 seq_printf(seq, "status: %s\n", 83 seq_printf(seq, "status: %s\n",
91 !state?"on":"off"); 84 !state ? "on" : "off");
92 } 85 }
93 return_VALUE(0); 86 return_VALUE(0);
94} 87}
@@ -99,29 +92,26 @@ static int acpi_fan_state_open_fs(struct inode *inode, struct file *file)
99} 92}
100 93
101static ssize_t 94static ssize_t
102acpi_fan_write_state ( 95acpi_fan_write_state(struct file *file, const char __user * buffer,
103 struct file *file, 96 size_t count, loff_t * ppos)
104 const char __user *buffer,
105 size_t count,
106 loff_t *ppos)
107{ 97{
108 int result = 0; 98 int result = 0;
109 struct seq_file *m = (struct seq_file *)file->private_data; 99 struct seq_file *m = (struct seq_file *)file->private_data;
110 struct acpi_fan *fan = (struct acpi_fan *) m->private; 100 struct acpi_fan *fan = (struct acpi_fan *)m->private;
111 char state_string[12] = {'\0'}; 101 char state_string[12] = { '\0' };
112 102
113 ACPI_FUNCTION_TRACE("acpi_fan_write_state"); 103 ACPI_FUNCTION_TRACE("acpi_fan_write_state");
114 104
115 if (!fan || (count > sizeof(state_string) - 1)) 105 if (!fan || (count > sizeof(state_string) - 1))
116 return_VALUE(-EINVAL); 106 return_VALUE(-EINVAL);
117 107
118 if (copy_from_user(state_string, buffer, count)) 108 if (copy_from_user(state_string, buffer, count))
119 return_VALUE(-EFAULT); 109 return_VALUE(-EFAULT);
120 110
121 state_string[count] = '\0'; 111 state_string[count] = '\0';
122 112
123 result = acpi_bus_set_power(fan->handle, 113 result = acpi_bus_set_power(fan->handle,
124 simple_strtoul(state_string, NULL, 0)); 114 simple_strtoul(state_string, NULL, 0));
125 if (result) 115 if (result)
126 return_VALUE(result); 116 return_VALUE(result);
127 117
@@ -129,19 +119,17 @@ acpi_fan_write_state (
129} 119}
130 120
131static struct file_operations acpi_fan_state_ops = { 121static struct file_operations acpi_fan_state_ops = {
132 .open = acpi_fan_state_open_fs, 122 .open = acpi_fan_state_open_fs,
133 .read = seq_read, 123 .read = seq_read,
134 .write = acpi_fan_write_state, 124 .write = acpi_fan_write_state,
135 .llseek = seq_lseek, 125 .llseek = seq_lseek,
136 .release = single_release, 126 .release = single_release,
137 .owner = THIS_MODULE, 127 .owner = THIS_MODULE,
138}; 128};
139 129
140static int 130static int acpi_fan_add_fs(struct acpi_device *device)
141acpi_fan_add_fs (
142 struct acpi_device *device)
143{ 131{
144 struct proc_dir_entry *entry = NULL; 132 struct proc_dir_entry *entry = NULL;
145 133
146 ACPI_FUNCTION_TRACE("acpi_fan_add_fs"); 134 ACPI_FUNCTION_TRACE("acpi_fan_add_fs");
147 135
@@ -150,7 +138,7 @@ acpi_fan_add_fs (
150 138
151 if (!acpi_device_dir(device)) { 139 if (!acpi_device_dir(device)) {
152 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), 140 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
153 acpi_fan_dir); 141 acpi_fan_dir);
154 if (!acpi_device_dir(device)) 142 if (!acpi_device_dir(device))
155 return_VALUE(-ENODEV); 143 return_VALUE(-ENODEV);
156 acpi_device_dir(device)->owner = THIS_MODULE; 144 acpi_device_dir(device)->owner = THIS_MODULE;
@@ -158,11 +146,12 @@ acpi_fan_add_fs (
158 146
159 /* 'status' [R/W] */ 147 /* 'status' [R/W] */
160 entry = create_proc_entry(ACPI_FAN_FILE_STATE, 148 entry = create_proc_entry(ACPI_FAN_FILE_STATE,
161 S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device)); 149 S_IFREG | S_IRUGO | S_IWUSR,
150 acpi_device_dir(device));
162 if (!entry) 151 if (!entry)
163 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 152 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
164 "Unable to create '%s' fs entry\n", 153 "Unable to create '%s' fs entry\n",
165 ACPI_FAN_FILE_STATE)); 154 ACPI_FAN_FILE_STATE));
166 else { 155 else {
167 entry->proc_fops = &acpi_fan_state_ops; 156 entry->proc_fops = &acpi_fan_state_ops;
168 entry->data = acpi_driver_data(device); 157 entry->data = acpi_driver_data(device);
@@ -172,16 +161,12 @@ acpi_fan_add_fs (
172 return_VALUE(0); 161 return_VALUE(0);
173} 162}
174 163
175 164static int acpi_fan_remove_fs(struct acpi_device *device)
176static int
177acpi_fan_remove_fs (
178 struct acpi_device *device)
179{ 165{
180 ACPI_FUNCTION_TRACE("acpi_fan_remove_fs"); 166 ACPI_FUNCTION_TRACE("acpi_fan_remove_fs");
181 167
182 if (acpi_device_dir(device)) { 168 if (acpi_device_dir(device)) {
183 remove_proc_entry(ACPI_FAN_FILE_STATE, 169 remove_proc_entry(ACPI_FAN_FILE_STATE, acpi_device_dir(device));
184 acpi_device_dir(device));
185 remove_proc_entry(acpi_device_bid(device), acpi_fan_dir); 170 remove_proc_entry(acpi_device_bid(device), acpi_fan_dir);
186 acpi_device_dir(device) = NULL; 171 acpi_device_dir(device) = NULL;
187 } 172 }
@@ -189,18 +174,15 @@ acpi_fan_remove_fs (
189 return_VALUE(0); 174 return_VALUE(0);
190} 175}
191 176
192
193/* -------------------------------------------------------------------------- 177/* --------------------------------------------------------------------------
194 Driver Interface 178 Driver Interface
195 -------------------------------------------------------------------------- */ 179 -------------------------------------------------------------------------- */
196 180
197static int 181static int acpi_fan_add(struct acpi_device *device)
198acpi_fan_add (
199 struct acpi_device *device)
200{ 182{
201 int result = 0; 183 int result = 0;
202 struct acpi_fan *fan = NULL; 184 struct acpi_fan *fan = NULL;
203 int state = 0; 185 int state = 0;
204 186
205 ACPI_FUNCTION_TRACE("acpi_fan_add"); 187 ACPI_FUNCTION_TRACE("acpi_fan_add");
206 188
@@ -213,14 +195,14 @@ acpi_fan_add (
213 memset(fan, 0, sizeof(struct acpi_fan)); 195 memset(fan, 0, sizeof(struct acpi_fan));
214 196
215 fan->handle = device->handle; 197 fan->handle = device->handle;
216 strcpy(acpi_device_name(device), ACPI_FAN_DEVICE_NAME); 198 strcpy(acpi_device_name(device), "Fan");
217 strcpy(acpi_device_class(device), ACPI_FAN_CLASS); 199 strcpy(acpi_device_class(device), ACPI_FAN_CLASS);
218 acpi_driver_data(device) = fan; 200 acpi_driver_data(device) = fan;
219 201
220 result = acpi_bus_get_power(fan->handle, &state); 202 result = acpi_bus_get_power(fan->handle, &state);
221 if (result) { 203 if (result) {
222 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 204 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
223 "Error reading power state\n")); 205 "Error reading power state\n"));
224 goto end; 206 goto end;
225 } 207 }
226 208
@@ -229,30 +211,26 @@ acpi_fan_add (
229 goto end; 211 goto end;
230 212
231 printk(KERN_INFO PREFIX "%s [%s] (%s)\n", 213 printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
232 acpi_device_name(device), acpi_device_bid(device), 214 acpi_device_name(device), acpi_device_bid(device),
233 !device->power.state?"on":"off"); 215 !device->power.state ? "on" : "off");
234 216
235end: 217 end:
236 if (result) 218 if (result)
237 kfree(fan); 219 kfree(fan);
238 220
239 return_VALUE(result); 221 return_VALUE(result);
240} 222}
241 223
242 224static int acpi_fan_remove(struct acpi_device *device, int type)
243static int
244acpi_fan_remove (
245 struct acpi_device *device,
246 int type)
247{ 225{
248 struct acpi_fan *fan = NULL; 226 struct acpi_fan *fan = NULL;
249 227
250 ACPI_FUNCTION_TRACE("acpi_fan_remove"); 228 ACPI_FUNCTION_TRACE("acpi_fan_remove");
251 229
252 if (!device || !acpi_driver_data(device)) 230 if (!device || !acpi_driver_data(device))
253 return_VALUE(-EINVAL); 231 return_VALUE(-EINVAL);
254 232
255 fan = (struct acpi_fan *) acpi_driver_data(device); 233 fan = (struct acpi_fan *)acpi_driver_data(device);
256 234
257 acpi_fan_remove_fs(device); 235 acpi_fan_remove_fs(device);
258 236
@@ -261,11 +239,9 @@ acpi_fan_remove (
261 return_VALUE(0); 239 return_VALUE(0);
262} 240}
263 241
264 242static int __init acpi_fan_init(void)
265static int __init
266acpi_fan_init (void)
267{ 243{
268 int result = 0; 244 int result = 0;
269 245
270 ACPI_FUNCTION_TRACE("acpi_fan_init"); 246 ACPI_FUNCTION_TRACE("acpi_fan_init");
271 247
@@ -283,9 +259,7 @@ acpi_fan_init (void)
283 return_VALUE(0); 259 return_VALUE(0);
284} 260}
285 261
286 262static void __exit acpi_fan_exit(void)
287static void __exit
288acpi_fan_exit (void)
289{ 263{
290 ACPI_FUNCTION_TRACE("acpi_fan_exit"); 264 ACPI_FUNCTION_TRACE("acpi_fan_exit");
291 265
@@ -296,7 +270,5 @@ acpi_fan_exit (void)
296 return_VOID; 270 return_VOID;
297} 271}
298 272
299
300module_init(acpi_fan_init); 273module_init(acpi_fan_init);
301module_exit(acpi_fan_exit); 274module_exit(acpi_fan_exit);
302