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569ff102 HG |
1 | /* fschmd.c |
2 | * | |
c69ab2b7 | 3 | * Copyright (C) 2007 - 2009 Hans de Goede <hdegoede@redhat.com> |
569ff102 HG |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | /* | |
21 | * Merged Fujitsu Siemens hwmon driver, supporting the Poseidon, Hermes, | |
de15f093 | 22 | * Scylla, Heracles, Heimdall, Hades and Syleus chips |
569ff102 HG |
23 | * |
24 | * Based on the original 2.4 fscscy, 2.6 fscpos, 2.6 fscher and 2.6 | |
25 | * (candidate) fschmd drivers: | |
26 | * Copyright (C) 2006 Thilo Cestonaro | |
27 | * <thilo.cestonaro.external@fujitsu-siemens.com> | |
28 | * Copyright (C) 2004, 2005 Stefan Ott <stefan@desire.ch> | |
29 | * Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de> | |
30 | * Copyright (c) 2001 Martin Knoblauch <mkn@teraport.de, knobi@knobisoft.de> | |
31 | * Copyright (C) 2000 Hermann Jung <hej@odn.de> | |
32 | */ | |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/jiffies.h> | |
38 | #include <linux/i2c.h> | |
39 | #include <linux/hwmon.h> | |
40 | #include <linux/hwmon-sysfs.h> | |
41 | #include <linux/err.h> | |
42 | #include <linux/mutex.h> | |
43 | #include <linux/sysfs.h> | |
7845cd79 | 44 | #include <linux/dmi.h> |
97950c3d HG |
45 | #include <linux/fs.h> |
46 | #include <linux/watchdog.h> | |
47 | #include <linux/miscdevice.h> | |
48 | #include <linux/uaccess.h> | |
49 | #include <linux/kref.h> | |
569ff102 HG |
50 | |
51 | /* Addresses to scan */ | |
25e9c86d | 52 | static const unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END }; |
569ff102 HG |
53 | |
54 | /* Insmod parameters */ | |
97950c3d HG |
55 | static int nowayout = WATCHDOG_NOWAYOUT; |
56 | module_param(nowayout, int, 0); | |
57 | MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" | |
58 | __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); | |
e5e9f44c JD |
59 | |
60 | enum chips { fscpos, fscher, fscscy, fschrc, fschmd, fschds, fscsyl }; | |
569ff102 HG |
61 | |
62 | /* | |
63 | * The FSCHMD registers and other defines | |
64 | */ | |
65 | ||
66 | /* chip identification */ | |
67 | #define FSCHMD_REG_IDENT_0 0x00 | |
68 | #define FSCHMD_REG_IDENT_1 0x01 | |
69 | #define FSCHMD_REG_IDENT_2 0x02 | |
70 | #define FSCHMD_REG_REVISION 0x03 | |
71 | ||
72 | /* global control and status */ | |
73 | #define FSCHMD_REG_EVENT_STATE 0x04 | |
74 | #define FSCHMD_REG_CONTROL 0x05 | |
75 | ||
453e308d | 76 | #define FSCHMD_CONTROL_ALERT_LED 0x01 |
569ff102 | 77 | |
97950c3d | 78 | /* watchdog */ |
de15f093 HG |
79 | static const u8 FSCHMD_REG_WDOG_CONTROL[7] = |
80 | { 0x21, 0x21, 0x21, 0x21, 0x21, 0x28, 0x28 }; | |
81 | static const u8 FSCHMD_REG_WDOG_STATE[7] = | |
82 | { 0x23, 0x23, 0x23, 0x23, 0x23, 0x29, 0x29 }; | |
83 | static const u8 FSCHMD_REG_WDOG_PRESET[7] = | |
84 | { 0x28, 0x28, 0x28, 0x28, 0x28, 0x2a, 0x2a }; | |
569ff102 | 85 | |
97950c3d HG |
86 | #define FSCHMD_WDOG_CONTROL_TRIGGER 0x10 |
87 | #define FSCHMD_WDOG_CONTROL_STARTED 0x10 /* the same as trigger */ | |
88 | #define FSCHMD_WDOG_CONTROL_STOP 0x20 | |
89 | #define FSCHMD_WDOG_CONTROL_RESOLUTION 0x40 | |
90 | ||
91 | #define FSCHMD_WDOG_STATE_CARDRESET 0x02 | |
92 | ||
569ff102 | 93 | /* voltages, weird order is to keep the same order as the old drivers */ |
de15f093 | 94 | static const u8 FSCHMD_REG_VOLT[7][6] = { |
c69ab2b7 HG |
95 | { 0x45, 0x42, 0x48 }, /* pos */ |
96 | { 0x45, 0x42, 0x48 }, /* her */ | |
97 | { 0x45, 0x42, 0x48 }, /* scy */ | |
98 | { 0x45, 0x42, 0x48 }, /* hrc */ | |
99 | { 0x45, 0x42, 0x48 }, /* hmd */ | |
de15f093 | 100 | { 0x21, 0x20, 0x22 }, /* hds */ |
c69ab2b7 HG |
101 | { 0x21, 0x20, 0x22, 0x23, 0x24, 0x25 }, /* syl */ |
102 | }; | |
103 | ||
de15f093 | 104 | static const int FSCHMD_NO_VOLT_SENSORS[7] = { 3, 3, 3, 3, 3, 3, 6 }; |
569ff102 HG |
105 | |
106 | /* minimum pwm at which the fan is driven (pwm can by increased depending on | |
107 | the temp. Notice that for the scy some fans share there minimum speed. | |
025dfdaf | 108 | Also notice that with the scy the sensor order is different than with the |
569ff102 | 109 | other chips, this order was in the 2.4 driver and kept for consistency. */ |
de15f093 | 110 | static const u8 FSCHMD_REG_FAN_MIN[7][7] = { |
569ff102 HG |
111 | { 0x55, 0x65 }, /* pos */ |
112 | { 0x55, 0x65, 0xb5 }, /* her */ | |
113 | { 0x65, 0x65, 0x55, 0xa5, 0x55, 0xa5 }, /* scy */ | |
114 | { 0x55, 0x65, 0xa5, 0xb5 }, /* hrc */ | |
115 | { 0x55, 0x65, 0xa5, 0xb5, 0xc5 }, /* hmd */ | |
de15f093 | 116 | { 0x55, 0x65, 0xa5, 0xb5, 0xc5 }, /* hds */ |
c69ab2b7 | 117 | { 0x54, 0x64, 0x74, 0x84, 0x94, 0xa4, 0xb4 }, /* syl */ |
569ff102 HG |
118 | }; |
119 | ||
120 | /* actual fan speed */ | |
de15f093 | 121 | static const u8 FSCHMD_REG_FAN_ACT[7][7] = { |
569ff102 HG |
122 | { 0x0e, 0x6b, 0xab }, /* pos */ |
123 | { 0x0e, 0x6b, 0xbb }, /* her */ | |
124 | { 0x6b, 0x6c, 0x0e, 0xab, 0x5c, 0xbb }, /* scy */ | |
125 | { 0x0e, 0x6b, 0xab, 0xbb }, /* hrc */ | |
126 | { 0x5b, 0x6b, 0xab, 0xbb, 0xcb }, /* hmd */ | |
de15f093 | 127 | { 0x5b, 0x6b, 0xab, 0xbb, 0xcb }, /* hds */ |
c69ab2b7 | 128 | { 0x57, 0x67, 0x77, 0x87, 0x97, 0xa7, 0xb7 }, /* syl */ |
569ff102 HG |
129 | }; |
130 | ||
131 | /* fan status registers */ | |
de15f093 | 132 | static const u8 FSCHMD_REG_FAN_STATE[7][7] = { |
569ff102 HG |
133 | { 0x0d, 0x62, 0xa2 }, /* pos */ |
134 | { 0x0d, 0x62, 0xb2 }, /* her */ | |
135 | { 0x62, 0x61, 0x0d, 0xa2, 0x52, 0xb2 }, /* scy */ | |
136 | { 0x0d, 0x62, 0xa2, 0xb2 }, /* hrc */ | |
137 | { 0x52, 0x62, 0xa2, 0xb2, 0xc2 }, /* hmd */ | |
de15f093 | 138 | { 0x52, 0x62, 0xa2, 0xb2, 0xc2 }, /* hds */ |
c69ab2b7 | 139 | { 0x50, 0x60, 0x70, 0x80, 0x90, 0xa0, 0xb0 }, /* syl */ |
569ff102 HG |
140 | }; |
141 | ||
142 | /* fan ripple / divider registers */ | |
de15f093 | 143 | static const u8 FSCHMD_REG_FAN_RIPPLE[7][7] = { |
569ff102 HG |
144 | { 0x0f, 0x6f, 0xaf }, /* pos */ |
145 | { 0x0f, 0x6f, 0xbf }, /* her */ | |
146 | { 0x6f, 0x6f, 0x0f, 0xaf, 0x0f, 0xbf }, /* scy */ | |
147 | { 0x0f, 0x6f, 0xaf, 0xbf }, /* hrc */ | |
148 | { 0x5f, 0x6f, 0xaf, 0xbf, 0xcf }, /* hmd */ | |
de15f093 | 149 | { 0x5f, 0x6f, 0xaf, 0xbf, 0xcf }, /* hds */ |
c69ab2b7 | 150 | { 0x56, 0x66, 0x76, 0x86, 0x96, 0xa6, 0xb6 }, /* syl */ |
569ff102 HG |
151 | }; |
152 | ||
de15f093 | 153 | static const int FSCHMD_NO_FAN_SENSORS[7] = { 3, 3, 6, 4, 5, 5, 7 }; |
569ff102 HG |
154 | |
155 | /* Fan status register bitmasks */ | |
453e308d | 156 | #define FSCHMD_FAN_ALARM 0x04 /* called fault by FSC! */ |
c69ab2b7 HG |
157 | #define FSCHMD_FAN_NOT_PRESENT 0x08 |
158 | #define FSCHMD_FAN_DISABLED 0x80 | |
569ff102 HG |
159 | |
160 | ||
161 | /* actual temperature registers */ | |
de15f093 | 162 | static const u8 FSCHMD_REG_TEMP_ACT[7][11] = { |
569ff102 HG |
163 | { 0x64, 0x32, 0x35 }, /* pos */ |
164 | { 0x64, 0x32, 0x35 }, /* her */ | |
165 | { 0x64, 0xD0, 0x32, 0x35 }, /* scy */ | |
166 | { 0x64, 0x32, 0x35 }, /* hrc */ | |
167 | { 0x70, 0x80, 0x90, 0xd0, 0xe0 }, /* hmd */ | |
de15f093 | 168 | { 0x70, 0x80, 0x90, 0xd0, 0xe0 }, /* hds */ |
c69ab2b7 HG |
169 | { 0x58, 0x68, 0x78, 0x88, 0x98, 0xa8, /* syl */ |
170 | 0xb8, 0xc8, 0xd8, 0xe8, 0xf8 }, | |
569ff102 HG |
171 | }; |
172 | ||
173 | /* temperature state registers */ | |
de15f093 | 174 | static const u8 FSCHMD_REG_TEMP_STATE[7][11] = { |
569ff102 HG |
175 | { 0x71, 0x81, 0x91 }, /* pos */ |
176 | { 0x71, 0x81, 0x91 }, /* her */ | |
177 | { 0x71, 0xd1, 0x81, 0x91 }, /* scy */ | |
178 | { 0x71, 0x81, 0x91 }, /* hrc */ | |
7dcf9a31 | 179 | { 0x71, 0x81, 0x91, 0xd1, 0xe1 }, /* hmd */ |
de15f093 | 180 | { 0x71, 0x81, 0x91, 0xd1, 0xe1 }, /* hds */ |
c69ab2b7 HG |
181 | { 0x59, 0x69, 0x79, 0x89, 0x99, 0xa9, /* syl */ |
182 | 0xb9, 0xc9, 0xd9, 0xe9, 0xf9 }, | |
569ff102 HG |
183 | }; |
184 | ||
185 | /* temperature high limit registers, FSC does not document these. Proven to be | |
186 | there with field testing on the fscher and fschrc, already supported / used | |
187 | in the fscscy 2.4 driver. FSC has confirmed that the fschmd has registers | |
188 | at these addresses, but doesn't want to confirm they are the same as with | |
189 | the fscher?? */ | |
de15f093 | 190 | static const u8 FSCHMD_REG_TEMP_LIMIT[7][11] = { |
569ff102 HG |
191 | { 0, 0, 0 }, /* pos */ |
192 | { 0x76, 0x86, 0x96 }, /* her */ | |
193 | { 0x76, 0xd6, 0x86, 0x96 }, /* scy */ | |
194 | { 0x76, 0x86, 0x96 }, /* hrc */ | |
7dcf9a31 | 195 | { 0x76, 0x86, 0x96, 0xd6, 0xe6 }, /* hmd */ |
de15f093 | 196 | { 0x76, 0x86, 0x96, 0xd6, 0xe6 }, /* hds */ |
c69ab2b7 HG |
197 | { 0x5a, 0x6a, 0x7a, 0x8a, 0x9a, 0xaa, /* syl */ |
198 | 0xba, 0xca, 0xda, 0xea, 0xfa }, | |
569ff102 HG |
199 | }; |
200 | ||
201 | /* These were found through experimenting with an fscher, currently they are | |
202 | not used, but we keep them around for future reference. | |
c69ab2b7 HG |
203 | On the fscsyl AUTOP1 lives at 0x#c (so 0x5c for fan1, 0x6c for fan2, etc), |
204 | AUTOP2 lives at 0x#e, and 0x#1 is a bitmask defining which temps influence | |
205 | the fan speed. | |
569ff102 HG |
206 | static const u8 FSCHER_REG_TEMP_AUTOP1[] = { 0x73, 0x83, 0x93 }; |
207 | static const u8 FSCHER_REG_TEMP_AUTOP2[] = { 0x75, 0x85, 0x95 }; */ | |
208 | ||
de15f093 | 209 | static const int FSCHMD_NO_TEMP_SENSORS[7] = { 3, 3, 4, 3, 5, 5, 11 }; |
569ff102 HG |
210 | |
211 | /* temp status register bitmasks */ | |
453e308d HG |
212 | #define FSCHMD_TEMP_WORKING 0x01 |
213 | #define FSCHMD_TEMP_ALERT 0x02 | |
c69ab2b7 | 214 | #define FSCHMD_TEMP_DISABLED 0x80 |
569ff102 HG |
215 | /* there only really is an alarm if the sensor is working and alert == 1 */ |
216 | #define FSCHMD_TEMP_ALARM_MASK \ | |
453e308d | 217 | (FSCHMD_TEMP_WORKING | FSCHMD_TEMP_ALERT) |
569ff102 HG |
218 | |
219 | /* | |
220 | * Functions declarations | |
221 | */ | |
222 | ||
40ac1994 JD |
223 | static int fschmd_probe(struct i2c_client *client, |
224 | const struct i2c_device_id *id); | |
310ec792 | 225 | static int fschmd_detect(struct i2c_client *client, |
40ac1994 JD |
226 | struct i2c_board_info *info); |
227 | static int fschmd_remove(struct i2c_client *client); | |
569ff102 HG |
228 | static struct fschmd_data *fschmd_update_device(struct device *dev); |
229 | ||
230 | /* | |
231 | * Driver data (common to all clients) | |
232 | */ | |
233 | ||
40ac1994 JD |
234 | static const struct i2c_device_id fschmd_id[] = { |
235 | { "fscpos", fscpos }, | |
236 | { "fscher", fscher }, | |
237 | { "fscscy", fscscy }, | |
238 | { "fschrc", fschrc }, | |
239 | { "fschmd", fschmd }, | |
de15f093 | 240 | { "fschds", fschds }, |
c69ab2b7 | 241 | { "fscsyl", fscsyl }, |
40ac1994 JD |
242 | { } |
243 | }; | |
244 | MODULE_DEVICE_TABLE(i2c, fschmd_id); | |
245 | ||
569ff102 | 246 | static struct i2c_driver fschmd_driver = { |
40ac1994 | 247 | .class = I2C_CLASS_HWMON, |
569ff102 | 248 | .driver = { |
453e308d | 249 | .name = "fschmd", |
569ff102 | 250 | }, |
40ac1994 JD |
251 | .probe = fschmd_probe, |
252 | .remove = fschmd_remove, | |
253 | .id_table = fschmd_id, | |
254 | .detect = fschmd_detect, | |
c3813d6a | 255 | .address_list = normal_i2c, |
569ff102 HG |
256 | }; |
257 | ||
258 | /* | |
259 | * Client data (each client gets its own) | |
260 | */ | |
261 | ||
262 | struct fschmd_data { | |
97950c3d | 263 | struct i2c_client *client; |
569ff102 HG |
264 | struct device *hwmon_dev; |
265 | struct mutex update_lock; | |
97950c3d HG |
266 | struct mutex watchdog_lock; |
267 | struct list_head list; /* member of the watchdog_data_list */ | |
268 | struct kref kref; | |
269 | struct miscdevice watchdog_miscdev; | |
dc71afe5 | 270 | enum chips kind; |
97950c3d HG |
271 | unsigned long watchdog_is_open; |
272 | char watchdog_expect_close; | |
273 | char watchdog_name[10]; /* must be unique to avoid sysfs conflict */ | |
569ff102 HG |
274 | char valid; /* zero until following fields are valid */ |
275 | unsigned long last_updated; /* in jiffies */ | |
276 | ||
277 | /* register values */ | |
97950c3d | 278 | u8 revision; /* chip revision */ |
569ff102 | 279 | u8 global_control; /* global control register */ |
97950c3d HG |
280 | u8 watchdog_control; /* watchdog control register */ |
281 | u8 watchdog_state; /* watchdog status register */ | |
282 | u8 watchdog_preset; /* watchdog counter preset on trigger val */ | |
c69ab2b7 HG |
283 | u8 volt[6]; /* voltage */ |
284 | u8 temp_act[11]; /* temperature */ | |
285 | u8 temp_status[11]; /* status of sensor */ | |
286 | u8 temp_max[11]; /* high temp limit, notice: undocumented! */ | |
287 | u8 fan_act[7]; /* fans revolutions per second */ | |
288 | u8 fan_status[7]; /* fan status */ | |
289 | u8 fan_min[7]; /* fan min value for rps */ | |
290 | u8 fan_ripple[7]; /* divider for rps */ | |
569ff102 HG |
291 | }; |
292 | ||
7845cd79 | 293 | /* Global variables to hold information read from special DMI tables, which are |
97950c3d HG |
294 | available on FSC machines with an fscher or later chip. There is no need to |
295 | protect these with a lock as they are only modified from our attach function | |
296 | which always gets called with the i2c-core lock held and never accessed | |
297 | before the attach function is done with them. */ | |
c69ab2b7 HG |
298 | static int dmi_mult[6] = { 490, 200, 100, 100, 200, 100 }; |
299 | static int dmi_offset[6] = { 0, 0, 0, 0, 0, 0 }; | |
7845cd79 HG |
300 | static int dmi_vref = -1; |
301 | ||
97950c3d HG |
302 | /* Somewhat ugly :( global data pointer list with all fschmd devices, so that |
303 | we can find our device data as when using misc_register there is no other | |
304 | method to get to ones device data from the open fop. */ | |
305 | static LIST_HEAD(watchdog_data_list); | |
306 | /* Note this lock not only protect list access, but also data.kref access */ | |
307 | static DEFINE_MUTEX(watchdog_data_mutex); | |
308 | ||
309 | /* Release our data struct when we're detached from the i2c client *and* all | |
310 | references to our watchdog device are released */ | |
311 | static void fschmd_release_resources(struct kref *ref) | |
312 | { | |
313 | struct fschmd_data *data = container_of(ref, struct fschmd_data, kref); | |
314 | kfree(data); | |
315 | } | |
7845cd79 | 316 | |
569ff102 HG |
317 | /* |
318 | * Sysfs attr show / store functions | |
319 | */ | |
320 | ||
321 | static ssize_t show_in_value(struct device *dev, | |
322 | struct device_attribute *devattr, char *buf) | |
323 | { | |
324 | const int max_reading[3] = { 14200, 6600, 3300 }; | |
325 | int index = to_sensor_dev_attr(devattr)->index; | |
326 | struct fschmd_data *data = fschmd_update_device(dev); | |
327 | ||
dc71afe5 | 328 | if (data->kind == fscher || data->kind >= fschrc) |
7845cd79 HG |
329 | return sprintf(buf, "%d\n", (data->volt[index] * dmi_vref * |
330 | dmi_mult[index]) / 255 + dmi_offset[index]); | |
331 | else | |
332 | return sprintf(buf, "%d\n", (data->volt[index] * | |
333 | max_reading[index] + 128) / 255); | |
569ff102 HG |
334 | } |
335 | ||
336 | ||
337 | #define TEMP_FROM_REG(val) (((val) - 128) * 1000) | |
338 | ||
339 | static ssize_t show_temp_value(struct device *dev, | |
340 | struct device_attribute *devattr, char *buf) | |
341 | { | |
342 | int index = to_sensor_dev_attr(devattr)->index; | |
343 | struct fschmd_data *data = fschmd_update_device(dev); | |
344 | ||
345 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[index])); | |
346 | } | |
347 | ||
348 | static ssize_t show_temp_max(struct device *dev, | |
349 | struct device_attribute *devattr, char *buf) | |
350 | { | |
351 | int index = to_sensor_dev_attr(devattr)->index; | |
352 | struct fschmd_data *data = fschmd_update_device(dev); | |
353 | ||
354 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[index])); | |
355 | } | |
356 | ||
357 | static ssize_t store_temp_max(struct device *dev, struct device_attribute | |
358 | *devattr, const char *buf, size_t count) | |
359 | { | |
360 | int index = to_sensor_dev_attr(devattr)->index; | |
361 | struct fschmd_data *data = dev_get_drvdata(dev); | |
362 | long v = simple_strtol(buf, NULL, 10) / 1000; | |
363 | ||
364 | v = SENSORS_LIMIT(v, -128, 127) + 128; | |
365 | ||
366 | mutex_lock(&data->update_lock); | |
40ac1994 | 367 | i2c_smbus_write_byte_data(to_i2c_client(dev), |
569ff102 HG |
368 | FSCHMD_REG_TEMP_LIMIT[data->kind][index], v); |
369 | data->temp_max[index] = v; | |
370 | mutex_unlock(&data->update_lock); | |
371 | ||
372 | return count; | |
373 | } | |
374 | ||
375 | static ssize_t show_temp_fault(struct device *dev, | |
376 | struct device_attribute *devattr, char *buf) | |
377 | { | |
378 | int index = to_sensor_dev_attr(devattr)->index; | |
379 | struct fschmd_data *data = fschmd_update_device(dev); | |
380 | ||
381 | /* bit 0 set means sensor working ok, so no fault! */ | |
453e308d | 382 | if (data->temp_status[index] & FSCHMD_TEMP_WORKING) |
569ff102 HG |
383 | return sprintf(buf, "0\n"); |
384 | else | |
385 | return sprintf(buf, "1\n"); | |
386 | } | |
387 | ||
388 | static ssize_t show_temp_alarm(struct device *dev, | |
389 | struct device_attribute *devattr, char *buf) | |
390 | { | |
391 | int index = to_sensor_dev_attr(devattr)->index; | |
392 | struct fschmd_data *data = fschmd_update_device(dev); | |
393 | ||
394 | if ((data->temp_status[index] & FSCHMD_TEMP_ALARM_MASK) == | |
395 | FSCHMD_TEMP_ALARM_MASK) | |
396 | return sprintf(buf, "1\n"); | |
397 | else | |
398 | return sprintf(buf, "0\n"); | |
399 | } | |
400 | ||
401 | ||
402 | #define RPM_FROM_REG(val) ((val) * 60) | |
403 | ||
404 | static ssize_t show_fan_value(struct device *dev, | |
405 | struct device_attribute *devattr, char *buf) | |
406 | { | |
407 | int index = to_sensor_dev_attr(devattr)->index; | |
408 | struct fschmd_data *data = fschmd_update_device(dev); | |
409 | ||
410 | return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[index])); | |
411 | } | |
412 | ||
413 | static ssize_t show_fan_div(struct device *dev, | |
414 | struct device_attribute *devattr, char *buf) | |
415 | { | |
416 | int index = to_sensor_dev_attr(devattr)->index; | |
417 | struct fschmd_data *data = fschmd_update_device(dev); | |
418 | ||
419 | /* bits 2..7 reserved => mask with 3 */ | |
420 | return sprintf(buf, "%d\n", 1 << (data->fan_ripple[index] & 3)); | |
421 | } | |
422 | ||
423 | static ssize_t store_fan_div(struct device *dev, struct device_attribute | |
424 | *devattr, const char *buf, size_t count) | |
425 | { | |
426 | u8 reg; | |
427 | int index = to_sensor_dev_attr(devattr)->index; | |
428 | struct fschmd_data *data = dev_get_drvdata(dev); | |
429 | /* supported values: 2, 4, 8 */ | |
430 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
431 | ||
432 | switch (v) { | |
433 | case 2: v = 1; break; | |
434 | case 4: v = 2; break; | |
435 | case 8: v = 3; break; | |
436 | default: | |
437 | dev_err(dev, "fan_div value %lu not supported. " | |
438 | "Choose one of 2, 4 or 8!\n", v); | |
439 | return -EINVAL; | |
440 | } | |
441 | ||
442 | mutex_lock(&data->update_lock); | |
443 | ||
40ac1994 | 444 | reg = i2c_smbus_read_byte_data(to_i2c_client(dev), |
569ff102 HG |
445 | FSCHMD_REG_FAN_RIPPLE[data->kind][index]); |
446 | ||
447 | /* bits 2..7 reserved => mask with 0x03 */ | |
448 | reg &= ~0x03; | |
449 | reg |= v; | |
450 | ||
40ac1994 | 451 | i2c_smbus_write_byte_data(to_i2c_client(dev), |
569ff102 HG |
452 | FSCHMD_REG_FAN_RIPPLE[data->kind][index], reg); |
453 | ||
454 | data->fan_ripple[index] = reg; | |
455 | ||
456 | mutex_unlock(&data->update_lock); | |
457 | ||
458 | return count; | |
459 | } | |
460 | ||
461 | static ssize_t show_fan_alarm(struct device *dev, | |
462 | struct device_attribute *devattr, char *buf) | |
463 | { | |
464 | int index = to_sensor_dev_attr(devattr)->index; | |
465 | struct fschmd_data *data = fschmd_update_device(dev); | |
466 | ||
453e308d | 467 | if (data->fan_status[index] & FSCHMD_FAN_ALARM) |
569ff102 HG |
468 | return sprintf(buf, "1\n"); |
469 | else | |
470 | return sprintf(buf, "0\n"); | |
471 | } | |
472 | ||
473 | static ssize_t show_fan_fault(struct device *dev, | |
474 | struct device_attribute *devattr, char *buf) | |
475 | { | |
476 | int index = to_sensor_dev_attr(devattr)->index; | |
477 | struct fschmd_data *data = fschmd_update_device(dev); | |
478 | ||
453e308d | 479 | if (data->fan_status[index] & FSCHMD_FAN_NOT_PRESENT) |
569ff102 HG |
480 | return sprintf(buf, "1\n"); |
481 | else | |
482 | return sprintf(buf, "0\n"); | |
483 | } | |
484 | ||
485 | ||
486 | static ssize_t show_pwm_auto_point1_pwm(struct device *dev, | |
487 | struct device_attribute *devattr, char *buf) | |
488 | { | |
489 | int index = to_sensor_dev_attr(devattr)->index; | |
c69ab2b7 HG |
490 | struct fschmd_data *data = fschmd_update_device(dev); |
491 | int val = data->fan_min[index]; | |
569ff102 | 492 | |
c69ab2b7 | 493 | /* 0 = allow turning off (except on the syl), 1-255 = 50-100% */ |
dc71afe5 | 494 | if (val || data->kind == fscsyl) |
569ff102 HG |
495 | val = val / 2 + 128; |
496 | ||
497 | return sprintf(buf, "%d\n", val); | |
498 | } | |
499 | ||
500 | static ssize_t store_pwm_auto_point1_pwm(struct device *dev, | |
501 | struct device_attribute *devattr, const char *buf, size_t count) | |
502 | { | |
503 | int index = to_sensor_dev_attr(devattr)->index; | |
504 | struct fschmd_data *data = dev_get_drvdata(dev); | |
505 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
506 | ||
c69ab2b7 | 507 | /* reg: 0 = allow turning off (except on the syl), 1-255 = 50-100% */ |
dc71afe5 | 508 | if (v || data->kind == fscsyl) { |
569ff102 HG |
509 | v = SENSORS_LIMIT(v, 128, 255); |
510 | v = (v - 128) * 2 + 1; | |
511 | } | |
512 | ||
513 | mutex_lock(&data->update_lock); | |
514 | ||
40ac1994 | 515 | i2c_smbus_write_byte_data(to_i2c_client(dev), |
569ff102 HG |
516 | FSCHMD_REG_FAN_MIN[data->kind][index], v); |
517 | data->fan_min[index] = v; | |
518 | ||
519 | mutex_unlock(&data->update_lock); | |
520 | ||
521 | return count; | |
522 | } | |
523 | ||
524 | ||
525 | /* The FSC hwmon family has the ability to force an attached alert led to flash | |
526 | from software, we export this as an alert_led sysfs attr */ | |
527 | static ssize_t show_alert_led(struct device *dev, | |
528 | struct device_attribute *devattr, char *buf) | |
529 | { | |
530 | struct fschmd_data *data = fschmd_update_device(dev); | |
531 | ||
453e308d | 532 | if (data->global_control & FSCHMD_CONTROL_ALERT_LED) |
569ff102 HG |
533 | return sprintf(buf, "1\n"); |
534 | else | |
535 | return sprintf(buf, "0\n"); | |
536 | } | |
537 | ||
538 | static ssize_t store_alert_led(struct device *dev, | |
539 | struct device_attribute *devattr, const char *buf, size_t count) | |
540 | { | |
541 | u8 reg; | |
542 | struct fschmd_data *data = dev_get_drvdata(dev); | |
543 | unsigned long v = simple_strtoul(buf, NULL, 10); | |
544 | ||
545 | mutex_lock(&data->update_lock); | |
546 | ||
40ac1994 | 547 | reg = i2c_smbus_read_byte_data(to_i2c_client(dev), FSCHMD_REG_CONTROL); |
569ff102 HG |
548 | |
549 | if (v) | |
453e308d | 550 | reg |= FSCHMD_CONTROL_ALERT_LED; |
569ff102 | 551 | else |
453e308d | 552 | reg &= ~FSCHMD_CONTROL_ALERT_LED; |
569ff102 | 553 | |
40ac1994 | 554 | i2c_smbus_write_byte_data(to_i2c_client(dev), FSCHMD_REG_CONTROL, reg); |
569ff102 HG |
555 | |
556 | data->global_control = reg; | |
557 | ||
558 | mutex_unlock(&data->update_lock); | |
559 | ||
560 | return count; | |
561 | } | |
562 | ||
c69ab2b7 HG |
563 | static DEVICE_ATTR(alert_led, 0644, show_alert_led, store_alert_led); |
564 | ||
569ff102 HG |
565 | static struct sensor_device_attribute fschmd_attr[] = { |
566 | SENSOR_ATTR(in0_input, 0444, show_in_value, NULL, 0), | |
567 | SENSOR_ATTR(in1_input, 0444, show_in_value, NULL, 1), | |
568 | SENSOR_ATTR(in2_input, 0444, show_in_value, NULL, 2), | |
c69ab2b7 HG |
569 | SENSOR_ATTR(in3_input, 0444, show_in_value, NULL, 3), |
570 | SENSOR_ATTR(in4_input, 0444, show_in_value, NULL, 4), | |
571 | SENSOR_ATTR(in5_input, 0444, show_in_value, NULL, 5), | |
569ff102 HG |
572 | }; |
573 | ||
574 | static struct sensor_device_attribute fschmd_temp_attr[] = { | |
575 | SENSOR_ATTR(temp1_input, 0444, show_temp_value, NULL, 0), | |
576 | SENSOR_ATTR(temp1_max, 0644, show_temp_max, store_temp_max, 0), | |
577 | SENSOR_ATTR(temp1_fault, 0444, show_temp_fault, NULL, 0), | |
578 | SENSOR_ATTR(temp1_alarm, 0444, show_temp_alarm, NULL, 0), | |
579 | SENSOR_ATTR(temp2_input, 0444, show_temp_value, NULL, 1), | |
580 | SENSOR_ATTR(temp2_max, 0644, show_temp_max, store_temp_max, 1), | |
581 | SENSOR_ATTR(temp2_fault, 0444, show_temp_fault, NULL, 1), | |
582 | SENSOR_ATTR(temp2_alarm, 0444, show_temp_alarm, NULL, 1), | |
583 | SENSOR_ATTR(temp3_input, 0444, show_temp_value, NULL, 2), | |
584 | SENSOR_ATTR(temp3_max, 0644, show_temp_max, store_temp_max, 2), | |
585 | SENSOR_ATTR(temp3_fault, 0444, show_temp_fault, NULL, 2), | |
586 | SENSOR_ATTR(temp3_alarm, 0444, show_temp_alarm, NULL, 2), | |
587 | SENSOR_ATTR(temp4_input, 0444, show_temp_value, NULL, 3), | |
588 | SENSOR_ATTR(temp4_max, 0644, show_temp_max, store_temp_max, 3), | |
589 | SENSOR_ATTR(temp4_fault, 0444, show_temp_fault, NULL, 3), | |
590 | SENSOR_ATTR(temp4_alarm, 0444, show_temp_alarm, NULL, 3), | |
591 | SENSOR_ATTR(temp5_input, 0444, show_temp_value, NULL, 4), | |
592 | SENSOR_ATTR(temp5_max, 0644, show_temp_max, store_temp_max, 4), | |
593 | SENSOR_ATTR(temp5_fault, 0444, show_temp_fault, NULL, 4), | |
594 | SENSOR_ATTR(temp5_alarm, 0444, show_temp_alarm, NULL, 4), | |
c69ab2b7 HG |
595 | SENSOR_ATTR(temp6_input, 0444, show_temp_value, NULL, 5), |
596 | SENSOR_ATTR(temp6_max, 0644, show_temp_max, store_temp_max, 5), | |
597 | SENSOR_ATTR(temp6_fault, 0444, show_temp_fault, NULL, 5), | |
598 | SENSOR_ATTR(temp6_alarm, 0444, show_temp_alarm, NULL, 5), | |
599 | SENSOR_ATTR(temp7_input, 0444, show_temp_value, NULL, 6), | |
600 | SENSOR_ATTR(temp7_max, 0644, show_temp_max, store_temp_max, 6), | |
601 | SENSOR_ATTR(temp7_fault, 0444, show_temp_fault, NULL, 6), | |
602 | SENSOR_ATTR(temp7_alarm, 0444, show_temp_alarm, NULL, 6), | |
603 | SENSOR_ATTR(temp8_input, 0444, show_temp_value, NULL, 7), | |
604 | SENSOR_ATTR(temp8_max, 0644, show_temp_max, store_temp_max, 7), | |
605 | SENSOR_ATTR(temp8_fault, 0444, show_temp_fault, NULL, 7), | |
606 | SENSOR_ATTR(temp8_alarm, 0444, show_temp_alarm, NULL, 7), | |
607 | SENSOR_ATTR(temp9_input, 0444, show_temp_value, NULL, 8), | |
608 | SENSOR_ATTR(temp9_max, 0644, show_temp_max, store_temp_max, 8), | |
609 | SENSOR_ATTR(temp9_fault, 0444, show_temp_fault, NULL, 8), | |
610 | SENSOR_ATTR(temp9_alarm, 0444, show_temp_alarm, NULL, 8), | |
611 | SENSOR_ATTR(temp10_input, 0444, show_temp_value, NULL, 9), | |
612 | SENSOR_ATTR(temp10_max, 0644, show_temp_max, store_temp_max, 9), | |
613 | SENSOR_ATTR(temp10_fault, 0444, show_temp_fault, NULL, 9), | |
614 | SENSOR_ATTR(temp10_alarm, 0444, show_temp_alarm, NULL, 9), | |
615 | SENSOR_ATTR(temp11_input, 0444, show_temp_value, NULL, 10), | |
616 | SENSOR_ATTR(temp11_max, 0644, show_temp_max, store_temp_max, 10), | |
617 | SENSOR_ATTR(temp11_fault, 0444, show_temp_fault, NULL, 10), | |
618 | SENSOR_ATTR(temp11_alarm, 0444, show_temp_alarm, NULL, 10), | |
569ff102 HG |
619 | }; |
620 | ||
621 | static struct sensor_device_attribute fschmd_fan_attr[] = { | |
622 | SENSOR_ATTR(fan1_input, 0444, show_fan_value, NULL, 0), | |
623 | SENSOR_ATTR(fan1_div, 0644, show_fan_div, store_fan_div, 0), | |
624 | SENSOR_ATTR(fan1_alarm, 0444, show_fan_alarm, NULL, 0), | |
625 | SENSOR_ATTR(fan1_fault, 0444, show_fan_fault, NULL, 0), | |
626 | SENSOR_ATTR(pwm1_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
627 | store_pwm_auto_point1_pwm, 0), | |
628 | SENSOR_ATTR(fan2_input, 0444, show_fan_value, NULL, 1), | |
629 | SENSOR_ATTR(fan2_div, 0644, show_fan_div, store_fan_div, 1), | |
630 | SENSOR_ATTR(fan2_alarm, 0444, show_fan_alarm, NULL, 1), | |
631 | SENSOR_ATTR(fan2_fault, 0444, show_fan_fault, NULL, 1), | |
632 | SENSOR_ATTR(pwm2_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
633 | store_pwm_auto_point1_pwm, 1), | |
634 | SENSOR_ATTR(fan3_input, 0444, show_fan_value, NULL, 2), | |
635 | SENSOR_ATTR(fan3_div, 0644, show_fan_div, store_fan_div, 2), | |
636 | SENSOR_ATTR(fan3_alarm, 0444, show_fan_alarm, NULL, 2), | |
637 | SENSOR_ATTR(fan3_fault, 0444, show_fan_fault, NULL, 2), | |
638 | SENSOR_ATTR(pwm3_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
639 | store_pwm_auto_point1_pwm, 2), | |
640 | SENSOR_ATTR(fan4_input, 0444, show_fan_value, NULL, 3), | |
641 | SENSOR_ATTR(fan4_div, 0644, show_fan_div, store_fan_div, 3), | |
642 | SENSOR_ATTR(fan4_alarm, 0444, show_fan_alarm, NULL, 3), | |
643 | SENSOR_ATTR(fan4_fault, 0444, show_fan_fault, NULL, 3), | |
644 | SENSOR_ATTR(pwm4_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
645 | store_pwm_auto_point1_pwm, 3), | |
646 | SENSOR_ATTR(fan5_input, 0444, show_fan_value, NULL, 4), | |
647 | SENSOR_ATTR(fan5_div, 0644, show_fan_div, store_fan_div, 4), | |
648 | SENSOR_ATTR(fan5_alarm, 0444, show_fan_alarm, NULL, 4), | |
649 | SENSOR_ATTR(fan5_fault, 0444, show_fan_fault, NULL, 4), | |
650 | SENSOR_ATTR(pwm5_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
651 | store_pwm_auto_point1_pwm, 4), | |
652 | SENSOR_ATTR(fan6_input, 0444, show_fan_value, NULL, 5), | |
653 | SENSOR_ATTR(fan6_div, 0644, show_fan_div, store_fan_div, 5), | |
654 | SENSOR_ATTR(fan6_alarm, 0444, show_fan_alarm, NULL, 5), | |
655 | SENSOR_ATTR(fan6_fault, 0444, show_fan_fault, NULL, 5), | |
656 | SENSOR_ATTR(pwm6_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
657 | store_pwm_auto_point1_pwm, 5), | |
c69ab2b7 HG |
658 | SENSOR_ATTR(fan7_input, 0444, show_fan_value, NULL, 6), |
659 | SENSOR_ATTR(fan7_div, 0644, show_fan_div, store_fan_div, 6), | |
660 | SENSOR_ATTR(fan7_alarm, 0444, show_fan_alarm, NULL, 6), | |
661 | SENSOR_ATTR(fan7_fault, 0444, show_fan_fault, NULL, 6), | |
662 | SENSOR_ATTR(pwm7_auto_point1_pwm, 0644, show_pwm_auto_point1_pwm, | |
663 | store_pwm_auto_point1_pwm, 6), | |
569ff102 HG |
664 | }; |
665 | ||
666 | ||
667 | /* | |
97950c3d HG |
668 | * Watchdog routines |
669 | */ | |
670 | ||
671 | static int watchdog_set_timeout(struct fschmd_data *data, int timeout) | |
672 | { | |
673 | int ret, resolution; | |
674 | int kind = data->kind + 1; /* 0-x array index -> 1-x module param */ | |
675 | ||
676 | /* 2 second or 60 second resolution? */ | |
677 | if (timeout <= 510 || kind == fscpos || kind == fscscy) | |
678 | resolution = 2; | |
679 | else | |
680 | resolution = 60; | |
681 | ||
682 | if (timeout < resolution || timeout > (resolution * 255)) | |
683 | return -EINVAL; | |
684 | ||
685 | mutex_lock(&data->watchdog_lock); | |
686 | if (!data->client) { | |
687 | ret = -ENODEV; | |
688 | goto leave; | |
689 | } | |
690 | ||
691 | if (resolution == 2) | |
692 | data->watchdog_control &= ~FSCHMD_WDOG_CONTROL_RESOLUTION; | |
693 | else | |
694 | data->watchdog_control |= FSCHMD_WDOG_CONTROL_RESOLUTION; | |
695 | ||
696 | data->watchdog_preset = DIV_ROUND_UP(timeout, resolution); | |
697 | ||
698 | /* Write new timeout value */ | |
c69ab2b7 HG |
699 | i2c_smbus_write_byte_data(data->client, |
700 | FSCHMD_REG_WDOG_PRESET[data->kind], data->watchdog_preset); | |
97950c3d | 701 | /* Write new control register, do not trigger! */ |
c69ab2b7 HG |
702 | i2c_smbus_write_byte_data(data->client, |
703 | FSCHMD_REG_WDOG_CONTROL[data->kind], | |
97950c3d HG |
704 | data->watchdog_control & ~FSCHMD_WDOG_CONTROL_TRIGGER); |
705 | ||
706 | ret = data->watchdog_preset * resolution; | |
707 | ||
708 | leave: | |
709 | mutex_unlock(&data->watchdog_lock); | |
710 | return ret; | |
711 | } | |
712 | ||
713 | static int watchdog_get_timeout(struct fschmd_data *data) | |
714 | { | |
715 | int timeout; | |
716 | ||
717 | mutex_lock(&data->watchdog_lock); | |
718 | if (data->watchdog_control & FSCHMD_WDOG_CONTROL_RESOLUTION) | |
719 | timeout = data->watchdog_preset * 60; | |
720 | else | |
721 | timeout = data->watchdog_preset * 2; | |
722 | mutex_unlock(&data->watchdog_lock); | |
723 | ||
724 | return timeout; | |
725 | } | |
726 | ||
727 | static int watchdog_trigger(struct fschmd_data *data) | |
728 | { | |
729 | int ret = 0; | |
730 | ||
731 | mutex_lock(&data->watchdog_lock); | |
732 | if (!data->client) { | |
733 | ret = -ENODEV; | |
734 | goto leave; | |
735 | } | |
736 | ||
737 | data->watchdog_control |= FSCHMD_WDOG_CONTROL_TRIGGER; | |
c69ab2b7 HG |
738 | i2c_smbus_write_byte_data(data->client, |
739 | FSCHMD_REG_WDOG_CONTROL[data->kind], | |
740 | data->watchdog_control); | |
97950c3d HG |
741 | leave: |
742 | mutex_unlock(&data->watchdog_lock); | |
743 | return ret; | |
744 | } | |
745 | ||
746 | static int watchdog_stop(struct fschmd_data *data) | |
747 | { | |
748 | int ret = 0; | |
749 | ||
750 | mutex_lock(&data->watchdog_lock); | |
751 | if (!data->client) { | |
752 | ret = -ENODEV; | |
753 | goto leave; | |
754 | } | |
755 | ||
756 | data->watchdog_control &= ~FSCHMD_WDOG_CONTROL_STARTED; | |
757 | /* Don't store the stop flag in our watchdog control register copy, as | |
758 | its a write only bit (read always returns 0) */ | |
c69ab2b7 HG |
759 | i2c_smbus_write_byte_data(data->client, |
760 | FSCHMD_REG_WDOG_CONTROL[data->kind], | |
97950c3d HG |
761 | data->watchdog_control | FSCHMD_WDOG_CONTROL_STOP); |
762 | leave: | |
763 | mutex_unlock(&data->watchdog_lock); | |
764 | return ret; | |
765 | } | |
766 | ||
767 | static int watchdog_open(struct inode *inode, struct file *filp) | |
768 | { | |
769 | struct fschmd_data *pos, *data = NULL; | |
c453615f | 770 | int watchdog_is_open; |
97950c3d HG |
771 | |
772 | /* We get called from drivers/char/misc.c with misc_mtx hold, and we | |
773 | call misc_register() from fschmd_probe() with watchdog_data_mutex | |
774 | hold, as misc_register() takes the misc_mtx lock, this is a possible | |
775 | deadlock, so we use mutex_trylock here. */ | |
776 | if (!mutex_trylock(&watchdog_data_mutex)) | |
777 | return -ERESTARTSYS; | |
778 | list_for_each_entry(pos, &watchdog_data_list, list) { | |
779 | if (pos->watchdog_miscdev.minor == iminor(inode)) { | |
780 | data = pos; | |
781 | break; | |
782 | } | |
783 | } | |
784 | /* Note we can never not have found data, so we don't check for this */ | |
c453615f HG |
785 | watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open); |
786 | if (!watchdog_is_open) | |
787 | kref_get(&data->kref); | |
97950c3d HG |
788 | mutex_unlock(&watchdog_data_mutex); |
789 | ||
c453615f | 790 | if (watchdog_is_open) |
97950c3d HG |
791 | return -EBUSY; |
792 | ||
793 | /* Start the watchdog */ | |
794 | watchdog_trigger(data); | |
795 | filp->private_data = data; | |
796 | ||
797 | return nonseekable_open(inode, filp); | |
798 | } | |
799 | ||
800 | static int watchdog_release(struct inode *inode, struct file *filp) | |
801 | { | |
802 | struct fschmd_data *data = filp->private_data; | |
803 | ||
804 | if (data->watchdog_expect_close) { | |
805 | watchdog_stop(data); | |
806 | data->watchdog_expect_close = 0; | |
807 | } else { | |
808 | watchdog_trigger(data); | |
809 | dev_crit(&data->client->dev, | |
810 | "unexpected close, not stopping watchdog!\n"); | |
811 | } | |
812 | ||
813 | clear_bit(0, &data->watchdog_is_open); | |
814 | ||
815 | mutex_lock(&watchdog_data_mutex); | |
816 | kref_put(&data->kref, fschmd_release_resources); | |
817 | mutex_unlock(&watchdog_data_mutex); | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
822 | static ssize_t watchdog_write(struct file *filp, const char __user *buf, | |
823 | size_t count, loff_t *offset) | |
824 | { | |
c7702c31 | 825 | int ret; |
97950c3d HG |
826 | struct fschmd_data *data = filp->private_data; |
827 | ||
828 | if (count) { | |
829 | if (!nowayout) { | |
830 | size_t i; | |
831 | ||
832 | /* Clear it in case it was set with a previous write */ | |
833 | data->watchdog_expect_close = 0; | |
834 | ||
835 | for (i = 0; i != count; i++) { | |
836 | char c; | |
837 | if (get_user(c, buf + i)) | |
838 | return -EFAULT; | |
839 | if (c == 'V') | |
840 | data->watchdog_expect_close = 1; | |
841 | } | |
842 | } | |
843 | ret = watchdog_trigger(data); | |
844 | if (ret < 0) | |
845 | return ret; | |
846 | } | |
847 | return count; | |
848 | } | |
849 | ||
55929332 | 850 | static long watchdog_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
97950c3d | 851 | { |
1b7243e8 | 852 | struct watchdog_info ident = { |
97950c3d HG |
853 | .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | |
854 | WDIOF_CARDRESET, | |
855 | .identity = "FSC watchdog" | |
856 | }; | |
857 | int i, ret = 0; | |
858 | struct fschmd_data *data = filp->private_data; | |
859 | ||
860 | switch (cmd) { | |
861 | case WDIOC_GETSUPPORT: | |
862 | ident.firmware_version = data->revision; | |
863 | if (!nowayout) | |
864 | ident.options |= WDIOF_MAGICCLOSE; | |
865 | if (copy_to_user((void __user *)arg, &ident, sizeof(ident))) | |
866 | ret = -EFAULT; | |
867 | break; | |
868 | ||
869 | case WDIOC_GETSTATUS: | |
870 | ret = put_user(0, (int __user *)arg); | |
871 | break; | |
872 | ||
873 | case WDIOC_GETBOOTSTATUS: | |
874 | if (data->watchdog_state & FSCHMD_WDOG_STATE_CARDRESET) | |
875 | ret = put_user(WDIOF_CARDRESET, (int __user *)arg); | |
876 | else | |
877 | ret = put_user(0, (int __user *)arg); | |
878 | break; | |
879 | ||
880 | case WDIOC_KEEPALIVE: | |
881 | ret = watchdog_trigger(data); | |
882 | break; | |
883 | ||
884 | case WDIOC_GETTIMEOUT: | |
885 | i = watchdog_get_timeout(data); | |
886 | ret = put_user(i, (int __user *)arg); | |
887 | break; | |
888 | ||
889 | case WDIOC_SETTIMEOUT: | |
890 | if (get_user(i, (int __user *)arg)) { | |
891 | ret = -EFAULT; | |
892 | break; | |
893 | } | |
894 | ret = watchdog_set_timeout(data, i); | |
895 | if (ret > 0) | |
896 | ret = put_user(ret, (int __user *)arg); | |
897 | break; | |
898 | ||
899 | case WDIOC_SETOPTIONS: | |
900 | if (get_user(i, (int __user *)arg)) { | |
901 | ret = -EFAULT; | |
902 | break; | |
903 | } | |
904 | ||
905 | if (i & WDIOS_DISABLECARD) | |
906 | ret = watchdog_stop(data); | |
907 | else if (i & WDIOS_ENABLECARD) | |
908 | ret = watchdog_trigger(data); | |
909 | else | |
910 | ret = -EINVAL; | |
911 | ||
912 | break; | |
913 | default: | |
914 | ret = -ENOTTY; | |
915 | } | |
97950c3d HG |
916 | return ret; |
917 | } | |
918 | ||
828c0950 | 919 | static const struct file_operations watchdog_fops = { |
97950c3d HG |
920 | .owner = THIS_MODULE, |
921 | .llseek = no_llseek, | |
922 | .open = watchdog_open, | |
923 | .release = watchdog_release, | |
924 | .write = watchdog_write, | |
55929332 | 925 | .unlocked_ioctl = watchdog_ioctl, |
97950c3d HG |
926 | }; |
927 | ||
928 | ||
929 | /* | |
930 | * Detect, register, unregister and update device functions | |
569ff102 HG |
931 | */ |
932 | ||
7845cd79 HG |
933 | /* DMI decode routine to read voltage scaling factors from special DMI tables, |
934 | which are available on FSC machines with an fscher or later chip. */ | |
e7a19c56 | 935 | static void fschmd_dmi_decode(const struct dmi_header *header, void *dummy) |
7845cd79 HG |
936 | { |
937 | int i, mult[3] = { 0 }, offset[3] = { 0 }, vref = 0, found = 0; | |
938 | ||
939 | /* dmi code ugliness, we get passed the address of the contents of | |
940 | a complete DMI record, but in the form of a dmi_header pointer, in | |
941 | reality this address holds header->length bytes of which the header | |
942 | are the first 4 bytes */ | |
943 | u8 *dmi_data = (u8 *)header; | |
944 | ||
945 | /* We are looking for OEM-specific type 185 */ | |
946 | if (header->type != 185) | |
947 | return; | |
948 | ||
949 | /* we are looking for what Siemens calls "subtype" 19, the subtype | |
950 | is stored in byte 5 of the dmi block */ | |
951 | if (header->length < 5 || dmi_data[4] != 19) | |
952 | return; | |
953 | ||
954 | /* After the subtype comes 1 unknown byte and then blocks of 5 bytes, | |
955 | consisting of what Siemens calls an "Entity" number, followed by | |
956 | 2 16-bit words in LSB first order */ | |
957 | for (i = 6; (i + 4) < header->length; i += 5) { | |
958 | /* entity 1 - 3: voltage multiplier and offset */ | |
959 | if (dmi_data[i] >= 1 && dmi_data[i] <= 3) { | |
960 | /* Our in sensors order and the DMI order differ */ | |
961 | const int shuffle[3] = { 1, 0, 2 }; | |
962 | int in = shuffle[dmi_data[i] - 1]; | |
963 | ||
964 | /* Check for twice the same entity */ | |
965 | if (found & (1 << in)) | |
966 | return; | |
967 | ||
968 | mult[in] = dmi_data[i + 1] | (dmi_data[i + 2] << 8); | |
969 | offset[in] = dmi_data[i + 3] | (dmi_data[i + 4] << 8); | |
970 | ||
971 | found |= 1 << in; | |
972 | } | |
973 | ||
974 | /* entity 7: reference voltage */ | |
975 | if (dmi_data[i] == 7) { | |
976 | /* Check for twice the same entity */ | |
977 | if (found & 0x08) | |
978 | return; | |
979 | ||
980 | vref = dmi_data[i + 1] | (dmi_data[i + 2] << 8); | |
981 | ||
982 | found |= 0x08; | |
983 | } | |
984 | } | |
985 | ||
986 | if (found == 0x0F) { | |
987 | for (i = 0; i < 3; i++) { | |
988 | dmi_mult[i] = mult[i] * 10; | |
989 | dmi_offset[i] = offset[i] * 10; | |
990 | } | |
c69ab2b7 HG |
991 | /* According to the docs there should be separate dmi entries |
992 | for the mult's and offsets of in3-5 of the syl, but on | |
993 | my test machine these are not present */ | |
994 | dmi_mult[3] = dmi_mult[2]; | |
995 | dmi_mult[4] = dmi_mult[1]; | |
996 | dmi_mult[5] = dmi_mult[2]; | |
997 | dmi_offset[3] = dmi_offset[2]; | |
998 | dmi_offset[4] = dmi_offset[1]; | |
999 | dmi_offset[5] = dmi_offset[2]; | |
7845cd79 HG |
1000 | dmi_vref = vref; |
1001 | } | |
1002 | } | |
1003 | ||
310ec792 | 1004 | static int fschmd_detect(struct i2c_client *client, |
40ac1994 | 1005 | struct i2c_board_info *info) |
569ff102 | 1006 | { |
52df6440 | 1007 | enum chips kind; |
40ac1994 | 1008 | struct i2c_adapter *adapter = client->adapter; |
52df6440 | 1009 | char id[4]; |
569ff102 HG |
1010 | |
1011 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
40ac1994 | 1012 | return -ENODEV; |
569ff102 HG |
1013 | |
1014 | /* Detect & Identify the chip */ | |
52df6440 JD |
1015 | id[0] = i2c_smbus_read_byte_data(client, FSCHMD_REG_IDENT_0); |
1016 | id[1] = i2c_smbus_read_byte_data(client, FSCHMD_REG_IDENT_1); | |
1017 | id[2] = i2c_smbus_read_byte_data(client, FSCHMD_REG_IDENT_2); | |
1018 | id[3] = '\0'; | |
1019 | ||
1020 | if (!strcmp(id, "PEG")) | |
1021 | kind = fscpos; | |
1022 | else if (!strcmp(id, "HER")) | |
1023 | kind = fscher; | |
1024 | else if (!strcmp(id, "SCY")) | |
1025 | kind = fscscy; | |
1026 | else if (!strcmp(id, "HRC")) | |
1027 | kind = fschrc; | |
1028 | else if (!strcmp(id, "HMD")) | |
1029 | kind = fschmd; | |
1030 | else if (!strcmp(id, "HDS")) | |
1031 | kind = fschds; | |
1032 | else if (!strcmp(id, "SYL")) | |
1033 | kind = fscsyl; | |
1034 | else | |
1035 | return -ENODEV; | |
569ff102 | 1036 | |
dc71afe5 | 1037 | strlcpy(info->type, fschmd_id[kind].name, I2C_NAME_SIZE); |
40ac1994 JD |
1038 | |
1039 | return 0; | |
1040 | } | |
1041 | ||
1042 | static int fschmd_probe(struct i2c_client *client, | |
1043 | const struct i2c_device_id *id) | |
1044 | { | |
1045 | struct fschmd_data *data; | |
de15f093 HG |
1046 | const char * const names[7] = { "Poseidon", "Hermes", "Scylla", |
1047 | "Heracles", "Heimdall", "Hades", "Syleus" }; | |
97950c3d | 1048 | const int watchdog_minors[] = { WATCHDOG_MINOR, 212, 213, 214, 215 }; |
40ac1994 JD |
1049 | int i, err; |
1050 | enum chips kind = id->driver_data; | |
1051 | ||
1052 | data = kzalloc(sizeof(struct fschmd_data), GFP_KERNEL); | |
1053 | if (!data) | |
1054 | return -ENOMEM; | |
1055 | ||
1056 | i2c_set_clientdata(client, data); | |
1057 | mutex_init(&data->update_lock); | |
97950c3d HG |
1058 | mutex_init(&data->watchdog_lock); |
1059 | INIT_LIST_HEAD(&data->list); | |
1060 | kref_init(&data->kref); | |
1061 | /* Store client pointer in our data struct for watchdog usage | |
1062 | (where the client is found through a data ptr instead of the | |
1063 | otherway around) */ | |
1064 | data->client = client; | |
dc71afe5 | 1065 | data->kind = kind; |
40ac1994 | 1066 | |
569ff102 HG |
1067 | if (kind == fscpos) { |
1068 | /* The Poseidon has hardwired temp limits, fill these | |
1069 | in for the alarm resetting code */ | |
1070 | data->temp_max[0] = 70 + 128; | |
1071 | data->temp_max[1] = 50 + 128; | |
1072 | data->temp_max[2] = 50 + 128; | |
1073 | } | |
1074 | ||
7845cd79 | 1075 | /* Read the special DMI table for fscher and newer chips */ |
453e308d | 1076 | if ((kind == fscher || kind >= fschrc) && dmi_vref == -1) { |
e7a19c56 | 1077 | dmi_walk(fschmd_dmi_decode, NULL); |
7845cd79 | 1078 | if (dmi_vref == -1) { |
453e308d HG |
1079 | dev_warn(&client->dev, |
1080 | "Couldn't get voltage scaling factors from " | |
7845cd79 HG |
1081 | "BIOS DMI table, using builtin defaults\n"); |
1082 | dmi_vref = 33; | |
1083 | } | |
1084 | } | |
1085 | ||
97950c3d HG |
1086 | /* Read in some never changing registers */ |
1087 | data->revision = i2c_smbus_read_byte_data(client, FSCHMD_REG_REVISION); | |
1088 | data->global_control = i2c_smbus_read_byte_data(client, | |
1089 | FSCHMD_REG_CONTROL); | |
1090 | data->watchdog_control = i2c_smbus_read_byte_data(client, | |
c69ab2b7 | 1091 | FSCHMD_REG_WDOG_CONTROL[data->kind]); |
97950c3d | 1092 | data->watchdog_state = i2c_smbus_read_byte_data(client, |
c69ab2b7 | 1093 | FSCHMD_REG_WDOG_STATE[data->kind]); |
97950c3d | 1094 | data->watchdog_preset = i2c_smbus_read_byte_data(client, |
c69ab2b7 | 1095 | FSCHMD_REG_WDOG_PRESET[data->kind]); |
97950c3d | 1096 | |
c69ab2b7 HG |
1097 | err = device_create_file(&client->dev, &dev_attr_alert_led); |
1098 | if (err) | |
1099 | goto exit_detach; | |
569ff102 | 1100 | |
c69ab2b7 | 1101 | for (i = 0; i < FSCHMD_NO_VOLT_SENSORS[data->kind]; i++) { |
569ff102 HG |
1102 | err = device_create_file(&client->dev, |
1103 | &fschmd_attr[i].dev_attr); | |
1104 | if (err) | |
1105 | goto exit_detach; | |
1106 | } | |
1107 | ||
1108 | for (i = 0; i < (FSCHMD_NO_TEMP_SENSORS[data->kind] * 4); i++) { | |
1109 | /* Poseidon doesn't have TEMP_LIMIT registers */ | |
1110 | if (kind == fscpos && fschmd_temp_attr[i].dev_attr.show == | |
1111 | show_temp_max) | |
1112 | continue; | |
1113 | ||
c69ab2b7 HG |
1114 | if (kind == fscsyl) { |
1115 | if (i % 4 == 0) | |
1116 | data->temp_status[i / 4] = | |
1117 | i2c_smbus_read_byte_data(client, | |
1118 | FSCHMD_REG_TEMP_STATE | |
1119 | [data->kind][i / 4]); | |
1120 | if (data->temp_status[i / 4] & FSCHMD_TEMP_DISABLED) | |
1121 | continue; | |
1122 | } | |
1123 | ||
569ff102 HG |
1124 | err = device_create_file(&client->dev, |
1125 | &fschmd_temp_attr[i].dev_attr); | |
1126 | if (err) | |
1127 | goto exit_detach; | |
1128 | } | |
1129 | ||
1130 | for (i = 0; i < (FSCHMD_NO_FAN_SENSORS[data->kind] * 5); i++) { | |
1131 | /* Poseidon doesn't have a FAN_MIN register for its 3rd fan */ | |
1132 | if (kind == fscpos && | |
1133 | !strcmp(fschmd_fan_attr[i].dev_attr.attr.name, | |
1134 | "pwm3_auto_point1_pwm")) | |
1135 | continue; | |
1136 | ||
c69ab2b7 HG |
1137 | if (kind == fscsyl) { |
1138 | if (i % 5 == 0) | |
1139 | data->fan_status[i / 5] = | |
1140 | i2c_smbus_read_byte_data(client, | |
1141 | FSCHMD_REG_FAN_STATE | |
1142 | [data->kind][i / 5]); | |
1143 | if (data->fan_status[i / 5] & FSCHMD_FAN_DISABLED) | |
1144 | continue; | |
1145 | } | |
1146 | ||
569ff102 HG |
1147 | err = device_create_file(&client->dev, |
1148 | &fschmd_fan_attr[i].dev_attr); | |
1149 | if (err) | |
1150 | goto exit_detach; | |
1151 | } | |
1152 | ||
1153 | data->hwmon_dev = hwmon_device_register(&client->dev); | |
1154 | if (IS_ERR(data->hwmon_dev)) { | |
1155 | err = PTR_ERR(data->hwmon_dev); | |
1156 | data->hwmon_dev = NULL; | |
1157 | goto exit_detach; | |
1158 | } | |
1159 | ||
97950c3d HG |
1160 | /* We take the data_mutex lock early so that watchdog_open() cannot |
1161 | run when misc_register() has completed, but we've not yet added | |
1162 | our data to the watchdog_data_list (and set the default timeout) */ | |
1163 | mutex_lock(&watchdog_data_mutex); | |
1164 | for (i = 0; i < ARRAY_SIZE(watchdog_minors); i++) { | |
1165 | /* Register our watchdog part */ | |
1166 | snprintf(data->watchdog_name, sizeof(data->watchdog_name), | |
1167 | "watchdog%c", (i == 0) ? '\0' : ('0' + i)); | |
1168 | data->watchdog_miscdev.name = data->watchdog_name; | |
1169 | data->watchdog_miscdev.fops = &watchdog_fops; | |
1170 | data->watchdog_miscdev.minor = watchdog_minors[i]; | |
1171 | err = misc_register(&data->watchdog_miscdev); | |
1172 | if (err == -EBUSY) | |
1173 | continue; | |
1174 | if (err) { | |
1175 | data->watchdog_miscdev.minor = 0; | |
1176 | dev_err(&client->dev, | |
1177 | "Registering watchdog chardev: %d\n", err); | |
1178 | break; | |
1179 | } | |
1180 | ||
1181 | list_add(&data->list, &watchdog_data_list); | |
1182 | watchdog_set_timeout(data, 60); | |
1183 | dev_info(&client->dev, | |
1184 | "Registered watchdog chardev major 10, minor: %d\n", | |
1185 | watchdog_minors[i]); | |
1186 | break; | |
1187 | } | |
1188 | if (i == ARRAY_SIZE(watchdog_minors)) { | |
1189 | data->watchdog_miscdev.minor = 0; | |
1190 | dev_warn(&client->dev, "Couldn't register watchdog chardev " | |
1191 | "(due to no free minor)\n"); | |
1192 | } | |
1193 | mutex_unlock(&watchdog_data_mutex); | |
1194 | ||
453e308d | 1195 | dev_info(&client->dev, "Detected FSC %s chip, revision: %d\n", |
97950c3d | 1196 | names[data->kind], (int) data->revision); |
569ff102 HG |
1197 | |
1198 | return 0; | |
1199 | ||
1200 | exit_detach: | |
40ac1994 | 1201 | fschmd_remove(client); /* will also free data for us */ |
569ff102 HG |
1202 | return err; |
1203 | } | |
1204 | ||
40ac1994 | 1205 | static int fschmd_remove(struct i2c_client *client) |
569ff102 HG |
1206 | { |
1207 | struct fschmd_data *data = i2c_get_clientdata(client); | |
40ac1994 | 1208 | int i; |
569ff102 | 1209 | |
97950c3d HG |
1210 | /* Unregister the watchdog (if registered) */ |
1211 | if (data->watchdog_miscdev.minor) { | |
1212 | misc_deregister(&data->watchdog_miscdev); | |
1213 | if (data->watchdog_is_open) { | |
1214 | dev_warn(&client->dev, | |
1215 | "i2c client detached with watchdog open! " | |
1216 | "Stopping watchdog.\n"); | |
1217 | watchdog_stop(data); | |
1218 | } | |
1219 | mutex_lock(&watchdog_data_mutex); | |
1220 | list_del(&data->list); | |
1221 | mutex_unlock(&watchdog_data_mutex); | |
1222 | /* Tell the watchdog code the client is gone */ | |
1223 | mutex_lock(&data->watchdog_lock); | |
1224 | data->client = NULL; | |
1225 | mutex_unlock(&data->watchdog_lock); | |
1226 | } | |
1227 | ||
569ff102 HG |
1228 | /* Check if registered in case we're called from fschmd_detect |
1229 | to cleanup after an error */ | |
1230 | if (data->hwmon_dev) | |
1231 | hwmon_device_unregister(data->hwmon_dev); | |
1232 | ||
c69ab2b7 HG |
1233 | device_remove_file(&client->dev, &dev_attr_alert_led); |
1234 | for (i = 0; i < (FSCHMD_NO_VOLT_SENSORS[data->kind]); i++) | |
569ff102 HG |
1235 | device_remove_file(&client->dev, &fschmd_attr[i].dev_attr); |
1236 | for (i = 0; i < (FSCHMD_NO_TEMP_SENSORS[data->kind] * 4); i++) | |
1237 | device_remove_file(&client->dev, | |
1238 | &fschmd_temp_attr[i].dev_attr); | |
1239 | for (i = 0; i < (FSCHMD_NO_FAN_SENSORS[data->kind] * 5); i++) | |
1240 | device_remove_file(&client->dev, | |
1241 | &fschmd_fan_attr[i].dev_attr); | |
1242 | ||
97950c3d HG |
1243 | mutex_lock(&watchdog_data_mutex); |
1244 | kref_put(&data->kref, fschmd_release_resources); | |
1245 | mutex_unlock(&watchdog_data_mutex); | |
1246 | ||
569ff102 HG |
1247 | return 0; |
1248 | } | |
1249 | ||
1250 | static struct fschmd_data *fschmd_update_device(struct device *dev) | |
1251 | { | |
1252 | struct i2c_client *client = to_i2c_client(dev); | |
1253 | struct fschmd_data *data = i2c_get_clientdata(client); | |
1254 | int i; | |
1255 | ||
1256 | mutex_lock(&data->update_lock); | |
1257 | ||
1258 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | |
1259 | ||
1260 | for (i = 0; i < FSCHMD_NO_TEMP_SENSORS[data->kind]; i++) { | |
1261 | data->temp_act[i] = i2c_smbus_read_byte_data(client, | |
1262 | FSCHMD_REG_TEMP_ACT[data->kind][i]); | |
1263 | data->temp_status[i] = i2c_smbus_read_byte_data(client, | |
1264 | FSCHMD_REG_TEMP_STATE[data->kind][i]); | |
1265 | ||
1266 | /* The fscpos doesn't have TEMP_LIMIT registers */ | |
1267 | if (FSCHMD_REG_TEMP_LIMIT[data->kind][i]) | |
1268 | data->temp_max[i] = i2c_smbus_read_byte_data( | |
1269 | client, | |
1270 | FSCHMD_REG_TEMP_LIMIT[data->kind][i]); | |
1271 | ||
1272 | /* reset alarm if the alarm condition is gone, | |
1273 | the chip doesn't do this itself */ | |
1274 | if ((data->temp_status[i] & FSCHMD_TEMP_ALARM_MASK) == | |
1275 | FSCHMD_TEMP_ALARM_MASK && | |
1276 | data->temp_act[i] < data->temp_max[i]) | |
1277 | i2c_smbus_write_byte_data(client, | |
1278 | FSCHMD_REG_TEMP_STATE[data->kind][i], | |
c69ab2b7 | 1279 | data->temp_status[i]); |
569ff102 HG |
1280 | } |
1281 | ||
1282 | for (i = 0; i < FSCHMD_NO_FAN_SENSORS[data->kind]; i++) { | |
1283 | data->fan_act[i] = i2c_smbus_read_byte_data(client, | |
1284 | FSCHMD_REG_FAN_ACT[data->kind][i]); | |
1285 | data->fan_status[i] = i2c_smbus_read_byte_data(client, | |
1286 | FSCHMD_REG_FAN_STATE[data->kind][i]); | |
1287 | data->fan_ripple[i] = i2c_smbus_read_byte_data(client, | |
1288 | FSCHMD_REG_FAN_RIPPLE[data->kind][i]); | |
1289 | ||
1290 | /* The fscpos third fan doesn't have a fan_min */ | |
1291 | if (FSCHMD_REG_FAN_MIN[data->kind][i]) | |
1292 | data->fan_min[i] = i2c_smbus_read_byte_data( | |
1293 | client, | |
1294 | FSCHMD_REG_FAN_MIN[data->kind][i]); | |
1295 | ||
1296 | /* reset fan status if speed is back to > 0 */ | |
453e308d | 1297 | if ((data->fan_status[i] & FSCHMD_FAN_ALARM) && |
569ff102 HG |
1298 | data->fan_act[i]) |
1299 | i2c_smbus_write_byte_data(client, | |
1300 | FSCHMD_REG_FAN_STATE[data->kind][i], | |
c69ab2b7 | 1301 | data->fan_status[i]); |
569ff102 HG |
1302 | } |
1303 | ||
c69ab2b7 | 1304 | for (i = 0; i < FSCHMD_NO_VOLT_SENSORS[data->kind]; i++) |
569ff102 | 1305 | data->volt[i] = i2c_smbus_read_byte_data(client, |
c69ab2b7 | 1306 | FSCHMD_REG_VOLT[data->kind][i]); |
569ff102 | 1307 | |
569ff102 HG |
1308 | data->last_updated = jiffies; |
1309 | data->valid = 1; | |
1310 | } | |
1311 | ||
1312 | mutex_unlock(&data->update_lock); | |
1313 | ||
1314 | return data; | |
1315 | } | |
1316 | ||
1317 | static int __init fschmd_init(void) | |
1318 | { | |
1319 | return i2c_add_driver(&fschmd_driver); | |
1320 | } | |
1321 | ||
1322 | static void __exit fschmd_exit(void) | |
1323 | { | |
1324 | i2c_del_driver(&fschmd_driver); | |
1325 | } | |
1326 | ||
453e308d | 1327 | MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); |
de15f093 HG |
1328 | MODULE_DESCRIPTION("FSC Poseidon, Hermes, Scylla, Heracles, Heimdall, Hades " |
1329 | "and Syleus driver"); | |
569ff102 HG |
1330 | MODULE_LICENSE("GPL"); |
1331 | ||
1332 | module_init(fschmd_init); | |
1333 | module_exit(fschmd_exit); |