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ff7924b0 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
6800c3d0 | 2 | /* |
47efe877 GR |
3 | * w83793.c - Linux kernel driver for hardware monitoring |
4 | * Copyright (C) 2006 Winbond Electronics Corp. | |
5 | * Yuan Mu | |
6 | * Rudolf Marek <r.marek@assembler.cz> | |
7 | * Copyright (C) 2009-2010 Sven Anders <anders@anduras.de>, ANDURAS AG. | |
8 | * Watchdog driver part | |
9 | * (Based partially on fschmd driver, | |
10 | * Copyright 2007-2008 by Hans de Goede) | |
47efe877 | 11 | */ |
6800c3d0 RM |
12 | |
13 | /* | |
47efe877 GR |
14 | * Supports following chips: |
15 | * | |
16 | * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA | |
17 | * w83793 10 12 8 6 0x7b 0x5ca3 yes no | |
18 | */ | |
6800c3d0 RM |
19 | |
20 | #include <linux/module.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/i2c.h> | |
24 | #include <linux/hwmon.h> | |
25 | #include <linux/hwmon-vid.h> | |
26 | #include <linux/hwmon-sysfs.h> | |
27 | #include <linux/err.h> | |
28 | #include <linux/mutex.h> | |
5852f960 SA |
29 | #include <linux/fs.h> |
30 | #include <linux/watchdog.h> | |
31 | #include <linux/miscdevice.h> | |
32 | #include <linux/uaccess.h> | |
33 | #include <linux/kref.h> | |
34 | #include <linux/notifier.h> | |
35 | #include <linux/reboot.h> | |
dcd8f392 | 36 | #include <linux/jiffies.h> |
5852f960 SA |
37 | |
38 | /* Default values */ | |
39 | #define WATCHDOG_TIMEOUT 2 /* 2 minute default timeout */ | |
6800c3d0 RM |
40 | |
41 | /* Addresses to scan */ | |
25e9c86d MH |
42 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, |
43 | I2C_CLIENT_END }; | |
6800c3d0 RM |
44 | |
45 | /* Insmod parameters */ | |
3aed198c JD |
46 | |
47 | static unsigned short force_subclients[4]; | |
48 | module_param_array(force_subclients, short, NULL, 0); | |
b55f3757 GR |
49 | MODULE_PARM_DESC(force_subclients, |
50 | "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}"); | |
6800c3d0 | 51 | |
90ab5ee9 | 52 | static bool reset; |
6800c3d0 RM |
53 | module_param(reset, bool, 0); |
54 | MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); | |
55 | ||
5852f960 SA |
56 | static int timeout = WATCHDOG_TIMEOUT; /* default timeout in minutes */ |
57 | module_param(timeout, int, 0); | |
58 | MODULE_PARM_DESC(timeout, | |
59 | "Watchdog timeout in minutes. 2<= timeout <=255 (default=" | |
60 | __MODULE_STRING(WATCHDOG_TIMEOUT) ")"); | |
61 | ||
86a1e189 WVS |
62 | static bool nowayout = WATCHDOG_NOWAYOUT; |
63 | module_param(nowayout, bool, 0); | |
5852f960 SA |
64 | MODULE_PARM_DESC(nowayout, |
65 | "Watchdog cannot be stopped once started (default=" | |
66 | __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); | |
67 | ||
6800c3d0 | 68 | /* |
47efe877 GR |
69 | * Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved |
70 | * as ID, Bank Select registers | |
71 | */ | |
6800c3d0 RM |
72 | #define W83793_REG_BANKSEL 0x00 |
73 | #define W83793_REG_VENDORID 0x0d | |
74 | #define W83793_REG_CHIPID 0x0e | |
75 | #define W83793_REG_DEVICEID 0x0f | |
76 | ||
77 | #define W83793_REG_CONFIG 0x40 | |
78 | #define W83793_REG_MFC 0x58 | |
79 | #define W83793_REG_FANIN_CTRL 0x5c | |
80 | #define W83793_REG_FANIN_SEL 0x5d | |
81 | #define W83793_REG_I2C_ADDR 0x0b | |
82 | #define W83793_REG_I2C_SUBADDR 0x0c | |
83 | #define W83793_REG_VID_INA 0x05 | |
84 | #define W83793_REG_VID_INB 0x06 | |
85 | #define W83793_REG_VID_LATCHA 0x07 | |
86 | #define W83793_REG_VID_LATCHB 0x08 | |
87 | #define W83793_REG_VID_CTRL 0x59 | |
88 | ||
5852f960 SA |
89 | #define W83793_REG_WDT_LOCK 0x01 |
90 | #define W83793_REG_WDT_ENABLE 0x02 | |
91 | #define W83793_REG_WDT_STATUS 0x03 | |
92 | #define W83793_REG_WDT_TIMEOUT 0x04 | |
93 | ||
6800c3d0 RM |
94 | static u16 W83793_REG_TEMP_MODE[2] = { 0x5e, 0x5f }; |
95 | ||
96 | #define TEMP_READ 0 | |
97 | #define TEMP_CRIT 1 | |
98 | #define TEMP_CRIT_HYST 2 | |
99 | #define TEMP_WARN 3 | |
100 | #define TEMP_WARN_HYST 4 | |
47efe877 GR |
101 | /* |
102 | * only crit and crit_hyst affect real-time alarm status | |
103 | * current crit crit_hyst warn warn_hyst | |
104 | */ | |
6800c3d0 RM |
105 | static u16 W83793_REG_TEMP[][5] = { |
106 | {0x1c, 0x78, 0x79, 0x7a, 0x7b}, | |
107 | {0x1d, 0x7c, 0x7d, 0x7e, 0x7f}, | |
108 | {0x1e, 0x80, 0x81, 0x82, 0x83}, | |
109 | {0x1f, 0x84, 0x85, 0x86, 0x87}, | |
110 | {0x20, 0x88, 0x89, 0x8a, 0x8b}, | |
111 | {0x21, 0x8c, 0x8d, 0x8e, 0x8f}, | |
112 | }; | |
113 | ||
114 | #define W83793_REG_TEMP_LOW_BITS 0x22 | |
115 | ||
116 | #define W83793_REG_BEEP(index) (0x53 + (index)) | |
117 | #define W83793_REG_ALARM(index) (0x4b + (index)) | |
118 | ||
119 | #define W83793_REG_CLR_CHASSIS 0x4a /* SMI MASK4 */ | |
120 | #define W83793_REG_IRQ_CTRL 0x50 | |
121 | #define W83793_REG_OVT_CTRL 0x51 | |
122 | #define W83793_REG_OVT_BEEP 0x52 | |
123 | ||
124 | #define IN_READ 0 | |
125 | #define IN_MAX 1 | |
126 | #define IN_LOW 2 | |
127 | static const u16 W83793_REG_IN[][3] = { | |
128 | /* Current, High, Low */ | |
129 | {0x10, 0x60, 0x61}, /* Vcore A */ | |
130 | {0x11, 0x62, 0x63}, /* Vcore B */ | |
131 | {0x12, 0x64, 0x65}, /* Vtt */ | |
132 | {0x14, 0x6a, 0x6b}, /* VSEN1 */ | |
133 | {0x15, 0x6c, 0x6d}, /* VSEN2 */ | |
134 | {0x16, 0x6e, 0x6f}, /* +3VSEN */ | |
135 | {0x17, 0x70, 0x71}, /* +12VSEN */ | |
136 | {0x18, 0x72, 0x73}, /* 5VDD */ | |
137 | {0x19, 0x74, 0x75}, /* 5VSB */ | |
138 | {0x1a, 0x76, 0x77}, /* VBAT */ | |
139 | }; | |
140 | ||
141 | /* Low Bits of Vcore A/B Vtt Read/High/Low */ | |
142 | static const u16 W83793_REG_IN_LOW_BITS[] = { 0x1b, 0x68, 0x69 }; | |
143 | static u8 scale_in[] = { 2, 2, 2, 16, 16, 16, 8, 24, 24, 16 }; | |
ddca933b | 144 | static u8 scale_in_add[] = { 0, 0, 0, 0, 0, 0, 0, 150, 150, 0 }; |
6800c3d0 RM |
145 | |
146 | #define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */ | |
147 | #define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */ | |
148 | ||
149 | #define W83793_REG_PWM_DEFAULT 0xb2 | |
150 | #define W83793_REG_PWM_ENABLE 0x207 | |
151 | #define W83793_REG_PWM_UPTIME 0xc3 /* Unit in 0.1 second */ | |
152 | #define W83793_REG_PWM_DOWNTIME 0xc4 /* Unit in 0.1 second */ | |
153 | #define W83793_REG_TEMP_CRITICAL 0xc5 | |
154 | ||
155 | #define PWM_DUTY 0 | |
156 | #define PWM_START 1 | |
157 | #define PWM_NONSTOP 2 | |
5aebefb0 | 158 | #define PWM_STOP_TIME 3 |
6800c3d0 RM |
159 | #define W83793_REG_PWM(index, nr) (((nr) == 0 ? 0xb3 : \ |
160 | (nr) == 1 ? 0x220 : 0x218) + (index)) | |
161 | ||
162 | /* bit field, fan1 is bit0, fan2 is bit1 ... */ | |
163 | #define W83793_REG_TEMP_FAN_MAP(index) (0x201 + (index)) | |
164 | #define W83793_REG_TEMP_TOL(index) (0x208 + (index)) | |
165 | #define W83793_REG_TEMP_CRUISE(index) (0x210 + (index)) | |
166 | #define W83793_REG_PWM_STOP_TIME(index) (0x228 + (index)) | |
167 | #define W83793_REG_SF2_TEMP(index, nr) (0x230 + ((index) << 4) + (nr)) | |
168 | #define W83793_REG_SF2_PWM(index, nr) (0x238 + ((index) << 4) + (nr)) | |
169 | ||
170 | static inline unsigned long FAN_FROM_REG(u16 val) | |
171 | { | |
172 | if ((val >= 0xfff) || (val == 0)) | |
173 | return 0; | |
7fe83ad8 | 174 | return 1350000UL / val; |
6800c3d0 RM |
175 | } |
176 | ||
177 | static inline u16 FAN_TO_REG(long rpm) | |
178 | { | |
179 | if (rpm <= 0) | |
180 | return 0x0fff; | |
2a844c14 | 181 | return clamp_val((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); |
6800c3d0 RM |
182 | } |
183 | ||
184 | static inline unsigned long TIME_FROM_REG(u8 reg) | |
185 | { | |
7fe83ad8 | 186 | return reg * 100; |
6800c3d0 RM |
187 | } |
188 | ||
189 | static inline u8 TIME_TO_REG(unsigned long val) | |
190 | { | |
2a844c14 | 191 | return clamp_val((val + 50) / 100, 0, 0xff); |
6800c3d0 RM |
192 | } |
193 | ||
194 | static inline long TEMP_FROM_REG(s8 reg) | |
195 | { | |
7fe83ad8 | 196 | return reg * 1000; |
6800c3d0 RM |
197 | } |
198 | ||
199 | static inline s8 TEMP_TO_REG(long val, s8 min, s8 max) | |
200 | { | |
2a844c14 | 201 | return clamp_val((val + (val < 0 ? -500 : 500)) / 1000, min, max); |
6800c3d0 RM |
202 | } |
203 | ||
204 | struct w83793_data { | |
6800c3d0 | 205 | struct i2c_client *lm75[2]; |
1beeffe4 | 206 | struct device *hwmon_dev; |
6800c3d0 RM |
207 | struct mutex update_lock; |
208 | char valid; /* !=0 if following fields are valid */ | |
209 | unsigned long last_updated; /* In jiffies */ | |
210 | unsigned long last_nonvolatile; /* In jiffies, last time we update the | |
47efe877 GR |
211 | * nonvolatile registers |
212 | */ | |
6800c3d0 RM |
213 | |
214 | u8 bank; | |
215 | u8 vrm; | |
216 | u8 vid[2]; | |
217 | u8 in[10][3]; /* Register value, read/high/low */ | |
218 | u8 in_low_bits[3]; /* Additional resolution for VCore A/B Vtt */ | |
219 | ||
220 | u16 has_fan; /* Only fan1- fan5 has own pins */ | |
221 | u16 fan[12]; /* Register value combine */ | |
222 | u16 fan_min[12]; /* Register value combine */ | |
223 | ||
224 | s8 temp[6][5]; /* current, crit, crit_hyst,warn, warn_hyst */ | |
225 | u8 temp_low_bits; /* Additional resolution TD1-TD4 */ | |
226 | u8 temp_mode[2]; /* byte 0: Temp D1-D4 mode each has 2 bits | |
47efe877 GR |
227 | * byte 1: Temp R1,R2 mode, each has 1 bit |
228 | */ | |
6800c3d0 RM |
229 | u8 temp_critical; /* If reached all fan will be at full speed */ |
230 | u8 temp_fan_map[6]; /* Temp controls which pwm fan, bit field */ | |
231 | ||
232 | u8 has_pwm; | |
46bed4df | 233 | u8 has_temp; |
c70a8c34 | 234 | u8 has_vid; |
6800c3d0 RM |
235 | u8 pwm_enable; /* Register value, each Temp has 1 bit */ |
236 | u8 pwm_uptime; /* Register value */ | |
237 | u8 pwm_downtime; /* Register value */ | |
238 | u8 pwm_default; /* All fan default pwm, next poweron valid */ | |
239 | u8 pwm[8][3]; /* Register value */ | |
240 | u8 pwm_stop_time[8]; | |
241 | u8 temp_cruise[6]; | |
242 | ||
243 | u8 alarms[5]; /* realtime status registers */ | |
244 | u8 beeps[5]; | |
245 | u8 beep_enable; | |
246 | u8 tolerance[3]; /* Temp tolerance(Smart Fan I/II) */ | |
247 | u8 sf2_pwm[6][7]; /* Smart FanII: Fan duty cycle */ | |
248 | u8 sf2_temp[6][7]; /* Smart FanII: Temp level point */ | |
5852f960 SA |
249 | |
250 | /* watchdog */ | |
251 | struct i2c_client *client; | |
252 | struct mutex watchdog_lock; | |
253 | struct list_head list; /* member of the watchdog_data_list */ | |
254 | struct kref kref; | |
255 | struct miscdevice watchdog_miscdev; | |
256 | unsigned long watchdog_is_open; | |
257 | char watchdog_expect_close; | |
258 | char watchdog_name[10]; /* must be unique to avoid sysfs conflict */ | |
259 | unsigned int watchdog_caused_reboot; | |
260 | int watchdog_timeout; /* watchdog timeout in minutes */ | |
6800c3d0 RM |
261 | }; |
262 | ||
47efe877 GR |
263 | /* |
264 | * Somewhat ugly :( global data pointer list with all devices, so that | |
265 | * we can find our device data as when using misc_register. There is no | |
266 | * other method to get to one's device data from the open file-op and | |
267 | * for usage in the reboot notifier callback. | |
268 | */ | |
5852f960 SA |
269 | static LIST_HEAD(watchdog_data_list); |
270 | ||
271 | /* Note this lock not only protect list access, but also data.kref access */ | |
272 | static DEFINE_MUTEX(watchdog_data_mutex); | |
273 | ||
47efe877 GR |
274 | /* |
275 | * Release our data struct when we're detached from the i2c client *and* all | |
276 | * references to our watchdog device are released | |
277 | */ | |
5852f960 SA |
278 | static void w83793_release_resources(struct kref *ref) |
279 | { | |
280 | struct w83793_data *data = container_of(ref, struct w83793_data, kref); | |
281 | kfree(data); | |
282 | } | |
283 | ||
6800c3d0 RM |
284 | static u8 w83793_read_value(struct i2c_client *client, u16 reg); |
285 | static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value); | |
a7f13a6e JD |
286 | static int w83793_probe(struct i2c_client *client, |
287 | const struct i2c_device_id *id); | |
310ec792 | 288 | static int w83793_detect(struct i2c_client *client, |
a7f13a6e JD |
289 | struct i2c_board_info *info); |
290 | static int w83793_remove(struct i2c_client *client); | |
6800c3d0 RM |
291 | static void w83793_init_client(struct i2c_client *client); |
292 | static void w83793_update_nonvolatile(struct device *dev); | |
293 | static struct w83793_data *w83793_update_device(struct device *dev); | |
294 | ||
a7f13a6e | 295 | static const struct i2c_device_id w83793_id[] = { |
1f86df49 | 296 | { "w83793", 0 }, |
a7f13a6e JD |
297 | { } |
298 | }; | |
299 | MODULE_DEVICE_TABLE(i2c, w83793_id); | |
300 | ||
6800c3d0 | 301 | static struct i2c_driver w83793_driver = { |
a7f13a6e | 302 | .class = I2C_CLASS_HWMON, |
6800c3d0 RM |
303 | .driver = { |
304 | .name = "w83793", | |
305 | }, | |
a7f13a6e JD |
306 | .probe = w83793_probe, |
307 | .remove = w83793_remove, | |
308 | .id_table = w83793_id, | |
309 | .detect = w83793_detect, | |
c3813d6a | 310 | .address_list = normal_i2c, |
6800c3d0 RM |
311 | }; |
312 | ||
313 | static ssize_t | |
329beb71 | 314 | vrm_show(struct device *dev, struct device_attribute *attr, char *buf) |
6800c3d0 | 315 | { |
8f74efe8 | 316 | struct w83793_data *data = dev_get_drvdata(dev); |
6800c3d0 RM |
317 | return sprintf(buf, "%d\n", data->vrm); |
318 | } | |
319 | ||
320 | static ssize_t | |
321 | show_vid(struct device *dev, struct device_attribute *attr, char *buf) | |
322 | { | |
323 | struct w83793_data *data = w83793_update_device(dev); | |
324 | struct sensor_device_attribute_2 *sensor_attr = | |
325 | to_sensor_dev_attr_2(attr); | |
326 | int index = sensor_attr->index; | |
327 | ||
328 | return sprintf(buf, "%d\n", vid_from_reg(data->vid[index], data->vrm)); | |
329 | } | |
330 | ||
331 | static ssize_t | |
329beb71 | 332 | vrm_store(struct device *dev, struct device_attribute *attr, |
6800c3d0 RM |
333 | const char *buf, size_t count) |
334 | { | |
8f74efe8 | 335 | struct w83793_data *data = dev_get_drvdata(dev); |
47efe877 GR |
336 | unsigned long val; |
337 | int err; | |
338 | ||
339 | err = kstrtoul(buf, 10, &val); | |
340 | if (err) | |
341 | return err; | |
342 | ||
2aeee04d AL |
343 | if (val > 255) |
344 | return -EINVAL; | |
345 | ||
47efe877 | 346 | data->vrm = val; |
6800c3d0 RM |
347 | return count; |
348 | } | |
349 | ||
350 | #define ALARM_STATUS 0 | |
351 | #define BEEP_ENABLE 1 | |
352 | static ssize_t | |
353 | show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) | |
354 | { | |
355 | struct w83793_data *data = w83793_update_device(dev); | |
356 | struct sensor_device_attribute_2 *sensor_attr = | |
357 | to_sensor_dev_attr_2(attr); | |
358 | int nr = sensor_attr->nr; | |
359 | int index = sensor_attr->index >> 3; | |
360 | int bit = sensor_attr->index & 0x07; | |
361 | u8 val; | |
362 | ||
47efe877 | 363 | if (nr == ALARM_STATUS) { |
6800c3d0 RM |
364 | val = (data->alarms[index] >> (bit)) & 1; |
365 | } else { /* BEEP_ENABLE */ | |
366 | val = (data->beeps[index] >> (bit)) & 1; | |
367 | } | |
368 | ||
369 | return sprintf(buf, "%u\n", val); | |
370 | } | |
371 | ||
372 | static ssize_t | |
373 | store_beep(struct device *dev, struct device_attribute *attr, | |
374 | const char *buf, size_t count) | |
375 | { | |
376 | struct i2c_client *client = to_i2c_client(dev); | |
377 | struct w83793_data *data = i2c_get_clientdata(client); | |
378 | struct sensor_device_attribute_2 *sensor_attr = | |
379 | to_sensor_dev_attr_2(attr); | |
380 | int index = sensor_attr->index >> 3; | |
381 | int shift = sensor_attr->index & 0x07; | |
382 | u8 beep_bit = 1 << shift; | |
47efe877 GR |
383 | unsigned long val; |
384 | int err; | |
6800c3d0 | 385 | |
47efe877 GR |
386 | err = kstrtoul(buf, 10, &val); |
387 | if (err) | |
388 | return err; | |
389 | ||
390 | if (val > 1) | |
6800c3d0 RM |
391 | return -EINVAL; |
392 | ||
393 | mutex_lock(&data->update_lock); | |
394 | data->beeps[index] = w83793_read_value(client, W83793_REG_BEEP(index)); | |
395 | data->beeps[index] &= ~beep_bit; | |
396 | data->beeps[index] |= val << shift; | |
397 | w83793_write_value(client, W83793_REG_BEEP(index), data->beeps[index]); | |
398 | mutex_unlock(&data->update_lock); | |
399 | ||
400 | return count; | |
401 | } | |
402 | ||
403 | static ssize_t | |
404 | show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf) | |
405 | { | |
406 | struct w83793_data *data = w83793_update_device(dev); | |
407 | return sprintf(buf, "%u\n", (data->beep_enable >> 1) & 0x01); | |
408 | } | |
409 | ||
410 | static ssize_t | |
411 | store_beep_enable(struct device *dev, struct device_attribute *attr, | |
412 | const char *buf, size_t count) | |
413 | { | |
414 | struct i2c_client *client = to_i2c_client(dev); | |
415 | struct w83793_data *data = i2c_get_clientdata(client); | |
47efe877 GR |
416 | unsigned long val; |
417 | int err; | |
418 | ||
419 | err = kstrtoul(buf, 10, &val); | |
420 | if (err) | |
421 | return err; | |
6800c3d0 | 422 | |
47efe877 | 423 | if (val > 1) |
6800c3d0 RM |
424 | return -EINVAL; |
425 | ||
426 | mutex_lock(&data->update_lock); | |
427 | data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP) | |
428 | & 0xfd; | |
429 | data->beep_enable |= val << 1; | |
430 | w83793_write_value(client, W83793_REG_OVT_BEEP, data->beep_enable); | |
431 | mutex_unlock(&data->update_lock); | |
432 | ||
433 | return count; | |
434 | } | |
435 | ||
a516dc3e JD |
436 | /* Write 0 to clear chassis alarm */ |
437 | static ssize_t | |
438 | store_chassis_clear(struct device *dev, | |
439 | struct device_attribute *attr, const char *buf, | |
440 | size_t count) | |
441 | { | |
442 | struct i2c_client *client = to_i2c_client(dev); | |
443 | struct w83793_data *data = i2c_get_clientdata(client); | |
444 | unsigned long val; | |
445 | u8 reg; | |
47efe877 | 446 | int err; |
a516dc3e | 447 | |
47efe877 GR |
448 | err = kstrtoul(buf, 10, &val); |
449 | if (err) | |
450 | return err; | |
451 | if (val) | |
a516dc3e JD |
452 | return -EINVAL; |
453 | ||
454 | mutex_lock(&data->update_lock); | |
455 | reg = w83793_read_value(client, W83793_REG_CLR_CHASSIS); | |
456 | w83793_write_value(client, W83793_REG_CLR_CHASSIS, reg | 0x80); | |
457 | data->valid = 0; /* Force cache refresh */ | |
458 | mutex_unlock(&data->update_lock); | |
459 | return count; | |
460 | } | |
461 | ||
6800c3d0 RM |
462 | #define FAN_INPUT 0 |
463 | #define FAN_MIN 1 | |
464 | static ssize_t | |
465 | show_fan(struct device *dev, struct device_attribute *attr, char *buf) | |
466 | { | |
467 | struct sensor_device_attribute_2 *sensor_attr = | |
468 | to_sensor_dev_attr_2(attr); | |
469 | int nr = sensor_attr->nr; | |
470 | int index = sensor_attr->index; | |
471 | struct w83793_data *data = w83793_update_device(dev); | |
472 | u16 val; | |
473 | ||
47efe877 | 474 | if (nr == FAN_INPUT) |
6800c3d0 | 475 | val = data->fan[index] & 0x0fff; |
47efe877 | 476 | else |
6800c3d0 | 477 | val = data->fan_min[index] & 0x0fff; |
6800c3d0 RM |
478 | |
479 | return sprintf(buf, "%lu\n", FAN_FROM_REG(val)); | |
480 | } | |
481 | ||
482 | static ssize_t | |
483 | store_fan_min(struct device *dev, struct device_attribute *attr, | |
484 | const char *buf, size_t count) | |
485 | { | |
486 | struct sensor_device_attribute_2 *sensor_attr = | |
487 | to_sensor_dev_attr_2(attr); | |
488 | int index = sensor_attr->index; | |
489 | struct i2c_client *client = to_i2c_client(dev); | |
490 | struct w83793_data *data = i2c_get_clientdata(client); | |
47efe877 GR |
491 | unsigned long val; |
492 | int err; | |
493 | ||
494 | err = kstrtoul(buf, 10, &val); | |
495 | if (err) | |
496 | return err; | |
497 | val = FAN_TO_REG(val); | |
6800c3d0 RM |
498 | |
499 | mutex_lock(&data->update_lock); | |
500 | data->fan_min[index] = val; | |
501 | w83793_write_value(client, W83793_REG_FAN_MIN(index), | |
502 | (val >> 8) & 0xff); | |
503 | w83793_write_value(client, W83793_REG_FAN_MIN(index) + 1, val & 0xff); | |
504 | mutex_unlock(&data->update_lock); | |
505 | ||
506 | return count; | |
507 | } | |
508 | ||
6800c3d0 RM |
509 | static ssize_t |
510 | show_pwm(struct device *dev, struct device_attribute *attr, char *buf) | |
511 | { | |
512 | struct sensor_device_attribute_2 *sensor_attr = | |
513 | to_sensor_dev_attr_2(attr); | |
514 | struct w83793_data *data = w83793_update_device(dev); | |
515 | u16 val; | |
516 | int nr = sensor_attr->nr; | |
517 | int index = sensor_attr->index; | |
518 | ||
47efe877 | 519 | if (nr == PWM_STOP_TIME) |
6800c3d0 RM |
520 | val = TIME_FROM_REG(data->pwm_stop_time[index]); |
521 | else | |
522 | val = (data->pwm[index][nr] & 0x3f) << 2; | |
523 | ||
524 | return sprintf(buf, "%d\n", val); | |
525 | } | |
526 | ||
527 | static ssize_t | |
528 | store_pwm(struct device *dev, struct device_attribute *attr, | |
529 | const char *buf, size_t count) | |
530 | { | |
531 | struct i2c_client *client = to_i2c_client(dev); | |
532 | struct w83793_data *data = i2c_get_clientdata(client); | |
533 | struct sensor_device_attribute_2 *sensor_attr = | |
534 | to_sensor_dev_attr_2(attr); | |
535 | int nr = sensor_attr->nr; | |
536 | int index = sensor_attr->index; | |
47efe877 GR |
537 | unsigned long val; |
538 | int err; | |
539 | ||
540 | err = kstrtoul(buf, 10, &val); | |
541 | if (err) | |
542 | return err; | |
6800c3d0 RM |
543 | |
544 | mutex_lock(&data->update_lock); | |
47efe877 GR |
545 | if (nr == PWM_STOP_TIME) { |
546 | val = TIME_TO_REG(val); | |
6800c3d0 RM |
547 | data->pwm_stop_time[index] = val; |
548 | w83793_write_value(client, W83793_REG_PWM_STOP_TIME(index), | |
549 | val); | |
550 | } else { | |
2a844c14 | 551 | val = clamp_val(val, 0, 0xff) >> 2; |
6800c3d0 RM |
552 | data->pwm[index][nr] = |
553 | w83793_read_value(client, W83793_REG_PWM(index, nr)) & 0xc0; | |
554 | data->pwm[index][nr] |= val; | |
555 | w83793_write_value(client, W83793_REG_PWM(index, nr), | |
556 | data->pwm[index][nr]); | |
557 | } | |
558 | ||
559 | mutex_unlock(&data->update_lock); | |
560 | return count; | |
561 | } | |
562 | ||
563 | static ssize_t | |
564 | show_temp(struct device *dev, struct device_attribute *attr, char *buf) | |
565 | { | |
566 | struct sensor_device_attribute_2 *sensor_attr = | |
567 | to_sensor_dev_attr_2(attr); | |
568 | int nr = sensor_attr->nr; | |
569 | int index = sensor_attr->index; | |
570 | struct w83793_data *data = w83793_update_device(dev); | |
571 | long temp = TEMP_FROM_REG(data->temp[index][nr]); | |
572 | ||
47efe877 | 573 | if (nr == TEMP_READ && index < 4) { /* Only TD1-TD4 have low bits */ |
6800c3d0 RM |
574 | int low = ((data->temp_low_bits >> (index * 2)) & 0x03) * 250; |
575 | temp += temp > 0 ? low : -low; | |
576 | } | |
577 | return sprintf(buf, "%ld\n", temp); | |
578 | } | |
579 | ||
580 | static ssize_t | |
581 | store_temp(struct device *dev, struct device_attribute *attr, | |
582 | const char *buf, size_t count) | |
583 | { | |
584 | struct sensor_device_attribute_2 *sensor_attr = | |
585 | to_sensor_dev_attr_2(attr); | |
586 | int nr = sensor_attr->nr; | |
587 | int index = sensor_attr->index; | |
588 | struct i2c_client *client = to_i2c_client(dev); | |
589 | struct w83793_data *data = i2c_get_clientdata(client); | |
47efe877 GR |
590 | long tmp; |
591 | int err; | |
592 | ||
593 | err = kstrtol(buf, 10, &tmp); | |
594 | if (err) | |
595 | return err; | |
6800c3d0 RM |
596 | |
597 | mutex_lock(&data->update_lock); | |
598 | data->temp[index][nr] = TEMP_TO_REG(tmp, -128, 127); | |
599 | w83793_write_value(client, W83793_REG_TEMP[index][nr], | |
600 | data->temp[index][nr]); | |
601 | mutex_unlock(&data->update_lock); | |
602 | return count; | |
603 | } | |
604 | ||
605 | /* | |
47efe877 GR |
606 | * TD1-TD4 |
607 | * each has 4 mode:(2 bits) | |
608 | * 0: Stop monitor | |
609 | * 1: Use internal temp sensor(default) | |
610 | * 2: Reserved | |
611 | * 3: Use sensor in Intel CPU and get result by PECI | |
612 | * | |
613 | * TR1-TR2 | |
614 | * each has 2 mode:(1 bit) | |
615 | * 0: Disable temp sensor monitor | |
616 | * 1: To enable temp sensors monitor | |
617 | */ | |
6800c3d0 | 618 | |
ddca933b GJ |
619 | /* 0 disable, 6 PECI */ |
620 | static u8 TO_TEMP_MODE[] = { 0, 0, 0, 6 }; | |
6800c3d0 RM |
621 | |
622 | static ssize_t | |
623 | show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) | |
624 | { | |
625 | struct w83793_data *data = w83793_update_device(dev); | |
626 | struct sensor_device_attribute_2 *sensor_attr = | |
627 | to_sensor_dev_attr_2(attr); | |
628 | int index = sensor_attr->index; | |
629 | u8 mask = (index < 4) ? 0x03 : 0x01; | |
630 | u8 shift = (index < 4) ? (2 * index) : (index - 4); | |
631 | u8 tmp; | |
632 | index = (index < 4) ? 0 : 1; | |
633 | ||
634 | tmp = (data->temp_mode[index] >> shift) & mask; | |
635 | ||
636 | /* for the internal sensor, found out if diode or thermistor */ | |
47efe877 | 637 | if (tmp == 1) |
6800c3d0 | 638 | tmp = index == 0 ? 3 : 4; |
47efe877 | 639 | else |
6800c3d0 | 640 | tmp = TO_TEMP_MODE[tmp]; |
6800c3d0 RM |
641 | |
642 | return sprintf(buf, "%d\n", tmp); | |
643 | } | |
644 | ||
645 | static ssize_t | |
646 | store_temp_mode(struct device *dev, struct device_attribute *attr, | |
647 | const char *buf, size_t count) | |
648 | { | |
649 | struct i2c_client *client = to_i2c_client(dev); | |
650 | struct w83793_data *data = i2c_get_clientdata(client); | |
651 | struct sensor_device_attribute_2 *sensor_attr = | |
652 | to_sensor_dev_attr_2(attr); | |
653 | int index = sensor_attr->index; | |
654 | u8 mask = (index < 4) ? 0x03 : 0x01; | |
655 | u8 shift = (index < 4) ? (2 * index) : (index - 4); | |
47efe877 GR |
656 | unsigned long val; |
657 | int err; | |
658 | ||
659 | err = kstrtoul(buf, 10, &val); | |
660 | if (err) | |
661 | return err; | |
6800c3d0 RM |
662 | |
663 | /* transform the sysfs interface values into table above */ | |
ddca933b | 664 | if ((val == 6) && (index < 4)) { |
6800c3d0 RM |
665 | val -= 3; |
666 | } else if ((val == 3 && index < 4) | |
46bed4df | 667 | || (val == 4 && index >= 4)) { |
6800c3d0 RM |
668 | /* transform diode or thermistor into internal enable */ |
669 | val = !!val; | |
670 | } else { | |
671 | return -EINVAL; | |
672 | } | |
673 | ||
674 | index = (index < 4) ? 0 : 1; | |
675 | mutex_lock(&data->update_lock); | |
676 | data->temp_mode[index] = | |
677 | w83793_read_value(client, W83793_REG_TEMP_MODE[index]); | |
678 | data->temp_mode[index] &= ~(mask << shift); | |
679 | data->temp_mode[index] |= val << shift; | |
680 | w83793_write_value(client, W83793_REG_TEMP_MODE[index], | |
681 | data->temp_mode[index]); | |
682 | mutex_unlock(&data->update_lock); | |
683 | ||
684 | return count; | |
685 | } | |
686 | ||
687 | #define SETUP_PWM_DEFAULT 0 | |
688 | #define SETUP_PWM_UPTIME 1 /* Unit in 0.1s */ | |
689 | #define SETUP_PWM_DOWNTIME 2 /* Unit in 0.1s */ | |
690 | #define SETUP_TEMP_CRITICAL 3 | |
691 | static ssize_t | |
692 | show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) | |
693 | { | |
694 | struct sensor_device_attribute_2 *sensor_attr = | |
695 | to_sensor_dev_attr_2(attr); | |
696 | int nr = sensor_attr->nr; | |
697 | struct w83793_data *data = w83793_update_device(dev); | |
698 | u32 val = 0; | |
699 | ||
47efe877 | 700 | if (nr == SETUP_PWM_DEFAULT) |
6800c3d0 | 701 | val = (data->pwm_default & 0x3f) << 2; |
47efe877 | 702 | else if (nr == SETUP_PWM_UPTIME) |
6800c3d0 | 703 | val = TIME_FROM_REG(data->pwm_uptime); |
47efe877 | 704 | else if (nr == SETUP_PWM_DOWNTIME) |
6800c3d0 | 705 | val = TIME_FROM_REG(data->pwm_downtime); |
47efe877 | 706 | else if (nr == SETUP_TEMP_CRITICAL) |
6800c3d0 | 707 | val = TEMP_FROM_REG(data->temp_critical & 0x7f); |
6800c3d0 RM |
708 | |
709 | return sprintf(buf, "%d\n", val); | |
710 | } | |
711 | ||
712 | static ssize_t | |
713 | store_sf_setup(struct device *dev, struct device_attribute *attr, | |
714 | const char *buf, size_t count) | |
715 | { | |
716 | struct sensor_device_attribute_2 *sensor_attr = | |
717 | to_sensor_dev_attr_2(attr); | |
718 | int nr = sensor_attr->nr; | |
719 | struct i2c_client *client = to_i2c_client(dev); | |
720 | struct w83793_data *data = i2c_get_clientdata(client); | |
47efe877 GR |
721 | long val; |
722 | int err; | |
723 | ||
724 | err = kstrtol(buf, 10, &val); | |
725 | if (err) | |
726 | return err; | |
6800c3d0 RM |
727 | |
728 | mutex_lock(&data->update_lock); | |
47efe877 | 729 | if (nr == SETUP_PWM_DEFAULT) { |
6800c3d0 RM |
730 | data->pwm_default = |
731 | w83793_read_value(client, W83793_REG_PWM_DEFAULT) & 0xc0; | |
2a844c14 | 732 | data->pwm_default |= clamp_val(val, 0, 0xff) >> 2; |
6800c3d0 RM |
733 | w83793_write_value(client, W83793_REG_PWM_DEFAULT, |
734 | data->pwm_default); | |
47efe877 GR |
735 | } else if (nr == SETUP_PWM_UPTIME) { |
736 | data->pwm_uptime = TIME_TO_REG(val); | |
6800c3d0 RM |
737 | data->pwm_uptime += data->pwm_uptime == 0 ? 1 : 0; |
738 | w83793_write_value(client, W83793_REG_PWM_UPTIME, | |
739 | data->pwm_uptime); | |
47efe877 GR |
740 | } else if (nr == SETUP_PWM_DOWNTIME) { |
741 | data->pwm_downtime = TIME_TO_REG(val); | |
6800c3d0 RM |
742 | data->pwm_downtime += data->pwm_downtime == 0 ? 1 : 0; |
743 | w83793_write_value(client, W83793_REG_PWM_DOWNTIME, | |
744 | data->pwm_downtime); | |
745 | } else { /* SETUP_TEMP_CRITICAL */ | |
746 | data->temp_critical = | |
747 | w83793_read_value(client, W83793_REG_TEMP_CRITICAL) & 0x80; | |
47efe877 | 748 | data->temp_critical |= TEMP_TO_REG(val, 0, 0x7f); |
6800c3d0 RM |
749 | w83793_write_value(client, W83793_REG_TEMP_CRITICAL, |
750 | data->temp_critical); | |
751 | } | |
752 | ||
753 | mutex_unlock(&data->update_lock); | |
754 | return count; | |
755 | } | |
756 | ||
757 | /* | |
47efe877 GR |
758 | * Temp SmartFan control |
759 | * TEMP_FAN_MAP | |
760 | * Temp channel control which pwm fan, bitfield, bit 0 indicate pwm1... | |
761 | * It's possible two or more temp channels control the same fan, w83793 | |
762 | * always prefers to pick the most critical request and applies it to | |
763 | * the related Fan. | |
764 | * It's possible one fan is not in any mapping of 6 temp channels, this | |
765 | * means the fan is manual mode | |
766 | * | |
767 | * TEMP_PWM_ENABLE | |
768 | * Each temp channel has its own SmartFan mode, and temp channel | |
769 | * control fans that are set by TEMP_FAN_MAP | |
770 | * 0: SmartFanII mode | |
771 | * 1: Thermal Cruise Mode | |
772 | * | |
773 | * TEMP_CRUISE | |
774 | * Target temperature in thermal cruise mode, w83793 will try to turn | |
775 | * fan speed to keep the temperature of target device around this | |
776 | * temperature. | |
777 | * | |
778 | * TEMP_TOLERANCE | |
779 | * If Temp higher or lower than target with this tolerance, w83793 | |
780 | * will take actions to speed up or slow down the fan to keep the | |
781 | * temperature within the tolerance range. | |
782 | */ | |
6800c3d0 RM |
783 | |
784 | #define TEMP_FAN_MAP 0 | |
785 | #define TEMP_PWM_ENABLE 1 | |
786 | #define TEMP_CRUISE 2 | |
787 | #define TEMP_TOLERANCE 3 | |
788 | static ssize_t | |
789 | show_sf_ctrl(struct device *dev, struct device_attribute *attr, char *buf) | |
790 | { | |
791 | struct sensor_device_attribute_2 *sensor_attr = | |
792 | to_sensor_dev_attr_2(attr); | |
793 | int nr = sensor_attr->nr; | |
794 | int index = sensor_attr->index; | |
795 | struct w83793_data *data = w83793_update_device(dev); | |
796 | u32 val; | |
797 | ||
47efe877 | 798 | if (nr == TEMP_FAN_MAP) { |
6800c3d0 | 799 | val = data->temp_fan_map[index]; |
47efe877 | 800 | } else if (nr == TEMP_PWM_ENABLE) { |
84fb029f | 801 | /* +2 to transform into 2 and 3 to conform with sysfs intf */ |
6800c3d0 | 802 | val = ((data->pwm_enable >> index) & 0x01) + 2; |
47efe877 | 803 | } else if (nr == TEMP_CRUISE) { |
6800c3d0 RM |
804 | val = TEMP_FROM_REG(data->temp_cruise[index] & 0x7f); |
805 | } else { /* TEMP_TOLERANCE */ | |
806 | val = data->tolerance[index >> 1] >> ((index & 0x01) ? 4 : 0); | |
807 | val = TEMP_FROM_REG(val & 0x0f); | |
808 | } | |
809 | return sprintf(buf, "%d\n", val); | |
810 | } | |
811 | ||
812 | static ssize_t | |
813 | store_sf_ctrl(struct device *dev, struct device_attribute *attr, | |
814 | const char *buf, size_t count) | |
815 | { | |
816 | struct sensor_device_attribute_2 *sensor_attr = | |
817 | to_sensor_dev_attr_2(attr); | |
818 | int nr = sensor_attr->nr; | |
819 | int index = sensor_attr->index; | |
820 | struct i2c_client *client = to_i2c_client(dev); | |
821 | struct w83793_data *data = i2c_get_clientdata(client); | |
47efe877 GR |
822 | long val; |
823 | int err; | |
824 | ||
825 | err = kstrtol(buf, 10, &val); | |
826 | if (err) | |
827 | return err; | |
6800c3d0 RM |
828 | |
829 | mutex_lock(&data->update_lock); | |
47efe877 | 830 | if (nr == TEMP_FAN_MAP) { |
2a844c14 | 831 | val = clamp_val(val, 0, 255); |
6800c3d0 RM |
832 | w83793_write_value(client, W83793_REG_TEMP_FAN_MAP(index), val); |
833 | data->temp_fan_map[index] = val; | |
47efe877 GR |
834 | } else if (nr == TEMP_PWM_ENABLE) { |
835 | if (val == 2 || val == 3) { | |
6800c3d0 RM |
836 | data->pwm_enable = |
837 | w83793_read_value(client, W83793_REG_PWM_ENABLE); | |
838 | if (val - 2) | |
839 | data->pwm_enable |= 1 << index; | |
840 | else | |
841 | data->pwm_enable &= ~(1 << index); | |
842 | w83793_write_value(client, W83793_REG_PWM_ENABLE, | |
843 | data->pwm_enable); | |
844 | } else { | |
845 | mutex_unlock(&data->update_lock); | |
846 | return -EINVAL; | |
847 | } | |
47efe877 | 848 | } else if (nr == TEMP_CRUISE) { |
6800c3d0 RM |
849 | data->temp_cruise[index] = |
850 | w83793_read_value(client, W83793_REG_TEMP_CRUISE(index)); | |
6800c3d0 | 851 | data->temp_cruise[index] &= 0x80; |
47efe877 | 852 | data->temp_cruise[index] |= TEMP_TO_REG(val, 0, 0x7f); |
6800c3d0 RM |
853 | |
854 | w83793_write_value(client, W83793_REG_TEMP_CRUISE(index), | |
855 | data->temp_cruise[index]); | |
856 | } else { /* TEMP_TOLERANCE */ | |
857 | int i = index >> 1; | |
858 | u8 shift = (index & 0x01) ? 4 : 0; | |
859 | data->tolerance[i] = | |
860 | w83793_read_value(client, W83793_REG_TEMP_TOL(i)); | |
861 | ||
6800c3d0 | 862 | data->tolerance[i] &= ~(0x0f << shift); |
47efe877 | 863 | data->tolerance[i] |= TEMP_TO_REG(val, 0, 0x0f) << shift; |
6800c3d0 RM |
864 | w83793_write_value(client, W83793_REG_TEMP_TOL(i), |
865 | data->tolerance[i]); | |
866 | } | |
867 | ||
868 | mutex_unlock(&data->update_lock); | |
869 | return count; | |
870 | } | |
871 | ||
872 | static ssize_t | |
873 | show_sf2_pwm(struct device *dev, struct device_attribute *attr, char *buf) | |
874 | { | |
875 | struct sensor_device_attribute_2 *sensor_attr = | |
876 | to_sensor_dev_attr_2(attr); | |
877 | int nr = sensor_attr->nr; | |
878 | int index = sensor_attr->index; | |
879 | struct w83793_data *data = w83793_update_device(dev); | |
880 | ||
881 | return sprintf(buf, "%d\n", (data->sf2_pwm[index][nr] & 0x3f) << 2); | |
882 | } | |
883 | ||
884 | static ssize_t | |
885 | store_sf2_pwm(struct device *dev, struct device_attribute *attr, | |
886 | const char *buf, size_t count) | |
887 | { | |
888 | struct i2c_client *client = to_i2c_client(dev); | |
889 | struct w83793_data *data = i2c_get_clientdata(client); | |
890 | struct sensor_device_attribute_2 *sensor_attr = | |
891 | to_sensor_dev_attr_2(attr); | |
892 | int nr = sensor_attr->nr; | |
893 | int index = sensor_attr->index; | |
47efe877 GR |
894 | unsigned long val; |
895 | int err; | |
896 | ||
897 | err = kstrtoul(buf, 10, &val); | |
898 | if (err) | |
899 | return err; | |
2a844c14 | 900 | val = clamp_val(val, 0, 0xff) >> 2; |
6800c3d0 RM |
901 | |
902 | mutex_lock(&data->update_lock); | |
903 | data->sf2_pwm[index][nr] = | |
904 | w83793_read_value(client, W83793_REG_SF2_PWM(index, nr)) & 0xc0; | |
905 | data->sf2_pwm[index][nr] |= val; | |
906 | w83793_write_value(client, W83793_REG_SF2_PWM(index, nr), | |
907 | data->sf2_pwm[index][nr]); | |
908 | mutex_unlock(&data->update_lock); | |
909 | return count; | |
910 | } | |
911 | ||
912 | static ssize_t | |
913 | show_sf2_temp(struct device *dev, struct device_attribute *attr, char *buf) | |
914 | { | |
915 | struct sensor_device_attribute_2 *sensor_attr = | |
916 | to_sensor_dev_attr_2(attr); | |
917 | int nr = sensor_attr->nr; | |
918 | int index = sensor_attr->index; | |
919 | struct w83793_data *data = w83793_update_device(dev); | |
920 | ||
921 | return sprintf(buf, "%ld\n", | |
922 | TEMP_FROM_REG(data->sf2_temp[index][nr] & 0x7f)); | |
923 | } | |
924 | ||
925 | static ssize_t | |
926 | store_sf2_temp(struct device *dev, struct device_attribute *attr, | |
927 | const char *buf, size_t count) | |
928 | { | |
929 | struct i2c_client *client = to_i2c_client(dev); | |
930 | struct w83793_data *data = i2c_get_clientdata(client); | |
931 | struct sensor_device_attribute_2 *sensor_attr = | |
932 | to_sensor_dev_attr_2(attr); | |
933 | int nr = sensor_attr->nr; | |
934 | int index = sensor_attr->index; | |
47efe877 GR |
935 | long val; |
936 | int err; | |
937 | ||
938 | err = kstrtol(buf, 10, &val); | |
939 | if (err) | |
940 | return err; | |
941 | val = TEMP_TO_REG(val, 0, 0x7f); | |
6800c3d0 RM |
942 | |
943 | mutex_lock(&data->update_lock); | |
944 | data->sf2_temp[index][nr] = | |
945 | w83793_read_value(client, W83793_REG_SF2_TEMP(index, nr)) & 0x80; | |
946 | data->sf2_temp[index][nr] |= val; | |
947 | w83793_write_value(client, W83793_REG_SF2_TEMP(index, nr), | |
948 | data->sf2_temp[index][nr]); | |
949 | mutex_unlock(&data->update_lock); | |
950 | return count; | |
951 | } | |
952 | ||
953 | /* only Vcore A/B and Vtt have additional 2 bits precision */ | |
954 | static ssize_t | |
955 | show_in(struct device *dev, struct device_attribute *attr, char *buf) | |
956 | { | |
957 | struct sensor_device_attribute_2 *sensor_attr = | |
958 | to_sensor_dev_attr_2(attr); | |
959 | int nr = sensor_attr->nr; | |
960 | int index = sensor_attr->index; | |
961 | struct w83793_data *data = w83793_update_device(dev); | |
962 | u16 val = data->in[index][nr]; | |
963 | ||
964 | if (index < 3) { | |
965 | val <<= 2; | |
966 | val += (data->in_low_bits[nr] >> (index * 2)) & 0x3; | |
967 | } | |
ddca933b GJ |
968 | /* voltage inputs 5VDD and 5VSB needs 150mV offset */ |
969 | val = val * scale_in[index] + scale_in_add[index]; | |
970 | return sprintf(buf, "%d\n", val); | |
6800c3d0 RM |
971 | } |
972 | ||
973 | static ssize_t | |
974 | store_in(struct device *dev, struct device_attribute *attr, | |
975 | const char *buf, size_t count) | |
976 | { | |
977 | struct sensor_device_attribute_2 *sensor_attr = | |
978 | to_sensor_dev_attr_2(attr); | |
979 | int nr = sensor_attr->nr; | |
980 | int index = sensor_attr->index; | |
981 | struct i2c_client *client = to_i2c_client(dev); | |
982 | struct w83793_data *data = i2c_get_clientdata(client); | |
47efe877 GR |
983 | unsigned long val; |
984 | int err; | |
985 | ||
986 | err = kstrtoul(buf, 10, &val); | |
987 | if (err) | |
988 | return err; | |
989 | val = (val + scale_in[index] / 2) / scale_in[index]; | |
6800c3d0 | 990 | |
6800c3d0 RM |
991 | mutex_lock(&data->update_lock); |
992 | if (index > 2) { | |
ddca933b | 993 | /* fix the limit values of 5VDD and 5VSB to ALARM mechanism */ |
47efe877 | 994 | if (nr == 1 || nr == 2) |
ddca933b | 995 | val -= scale_in_add[index] / scale_in[index]; |
2a844c14 | 996 | val = clamp_val(val, 0, 255); |
6800c3d0 | 997 | } else { |
2a844c14 | 998 | val = clamp_val(val, 0, 0x3FF); |
6800c3d0 RM |
999 | data->in_low_bits[nr] = |
1000 | w83793_read_value(client, W83793_REG_IN_LOW_BITS[nr]); | |
1001 | data->in_low_bits[nr] &= ~(0x03 << (2 * index)); | |
1002 | data->in_low_bits[nr] |= (val & 0x03) << (2 * index); | |
1003 | w83793_write_value(client, W83793_REG_IN_LOW_BITS[nr], | |
1004 | data->in_low_bits[nr]); | |
1005 | val >>= 2; | |
1006 | } | |
1007 | data->in[index][nr] = val; | |
1008 | w83793_write_value(client, W83793_REG_IN[index][nr], | |
1009 | data->in[index][nr]); | |
1010 | mutex_unlock(&data->update_lock); | |
1011 | return count; | |
1012 | } | |
1013 | ||
1014 | #define NOT_USED -1 | |
1015 | ||
1016 | #define SENSOR_ATTR_IN(index) \ | |
1017 | SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ | |
1018 | IN_READ, index), \ | |
1019 | SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ | |
1020 | store_in, IN_MAX, index), \ | |
1021 | SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ | |
1022 | store_in, IN_LOW, index), \ | |
1023 | SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ | |
1024 | NULL, ALARM_STATUS, index + ((index > 2) ? 1 : 0)), \ | |
1025 | SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ | |
1026 | show_alarm_beep, store_beep, BEEP_ENABLE, \ | |
1027 | index + ((index > 2) ? 1 : 0)) | |
1028 | ||
1029 | #define SENSOR_ATTR_FAN(index) \ | |
1030 | SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ | |
1031 | NULL, ALARM_STATUS, index + 17), \ | |
1032 | SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ | |
1033 | show_alarm_beep, store_beep, BEEP_ENABLE, index + 17), \ | |
1034 | SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ | |
1035 | NULL, FAN_INPUT, index - 1), \ | |
1036 | SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ | |
1037 | show_fan, store_fan_min, FAN_MIN, index - 1) | |
1038 | ||
1039 | #define SENSOR_ATTR_PWM(index) \ | |
1040 | SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ | |
1041 | store_pwm, PWM_DUTY, index - 1), \ | |
1042 | SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ | |
1043 | show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ | |
1044 | SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ | |
1045 | show_pwm, store_pwm, PWM_START, index - 1), \ | |
1046 | SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ | |
1047 | show_pwm, store_pwm, PWM_STOP_TIME, index - 1) | |
1048 | ||
1049 | #define SENSOR_ATTR_TEMP(index) \ | |
1050 | SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \ | |
1051 | show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ | |
1052 | SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ | |
1053 | NULL, TEMP_READ, index - 1), \ | |
1054 | SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ | |
1055 | store_temp, TEMP_CRIT, index - 1), \ | |
1056 | SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ | |
1057 | show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ | |
1058 | SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \ | |
1059 | store_temp, TEMP_WARN, index - 1), \ | |
1060 | SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \ | |
1061 | show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ | |
1062 | SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ | |
1063 | show_alarm_beep, NULL, ALARM_STATUS, index + 11), \ | |
1064 | SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ | |
1065 | show_alarm_beep, store_beep, BEEP_ENABLE, index + 11), \ | |
1066 | SENSOR_ATTR_2(temp##index##_auto_channels_pwm, \ | |
1067 | S_IRUGO | S_IWUSR, show_sf_ctrl, store_sf_ctrl, \ | |
1068 | TEMP_FAN_MAP, index - 1), \ | |
1069 | SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ | |
1070 | show_sf_ctrl, store_sf_ctrl, TEMP_PWM_ENABLE, \ | |
1071 | index - 1), \ | |
1072 | SENSOR_ATTR_2(thermal_cruise##index, S_IRUGO | S_IWUSR, \ | |
1073 | show_sf_ctrl, store_sf_ctrl, TEMP_CRUISE, index - 1), \ | |
1074 | SENSOR_ATTR_2(tolerance##index, S_IRUGO | S_IWUSR, show_sf_ctrl,\ | |
1075 | store_sf_ctrl, TEMP_TOLERANCE, index - 1), \ | |
1076 | SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ | |
1077 | show_sf2_pwm, store_sf2_pwm, 0, index - 1), \ | |
1078 | SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ | |
1079 | show_sf2_pwm, store_sf2_pwm, 1, index - 1), \ | |
1080 | SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ | |
1081 | show_sf2_pwm, store_sf2_pwm, 2, index - 1), \ | |
1082 | SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ | |
1083 | show_sf2_pwm, store_sf2_pwm, 3, index - 1), \ | |
1084 | SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ | |
1085 | show_sf2_pwm, store_sf2_pwm, 4, index - 1), \ | |
1086 | SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ | |
1087 | show_sf2_pwm, store_sf2_pwm, 5, index - 1), \ | |
1088 | SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ | |
1089 | show_sf2_pwm, store_sf2_pwm, 6, index - 1), \ | |
1090 | SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ | |
1091 | show_sf2_temp, store_sf2_temp, 0, index - 1), \ | |
1092 | SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ | |
1093 | show_sf2_temp, store_sf2_temp, 1, index - 1), \ | |
1094 | SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ | |
1095 | show_sf2_temp, store_sf2_temp, 2, index - 1), \ | |
1096 | SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ | |
1097 | show_sf2_temp, store_sf2_temp, 3, index - 1), \ | |
1098 | SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ | |
1099 | show_sf2_temp, store_sf2_temp, 4, index - 1), \ | |
1100 | SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ | |
1101 | show_sf2_temp, store_sf2_temp, 5, index - 1), \ | |
1102 | SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ | |
1103 | show_sf2_temp, store_sf2_temp, 6, index - 1) | |
1104 | ||
1105 | static struct sensor_device_attribute_2 w83793_sensor_attr_2[] = { | |
1106 | SENSOR_ATTR_IN(0), | |
1107 | SENSOR_ATTR_IN(1), | |
1108 | SENSOR_ATTR_IN(2), | |
1109 | SENSOR_ATTR_IN(3), | |
1110 | SENSOR_ATTR_IN(4), | |
1111 | SENSOR_ATTR_IN(5), | |
1112 | SENSOR_ATTR_IN(6), | |
1113 | SENSOR_ATTR_IN(7), | |
1114 | SENSOR_ATTR_IN(8), | |
1115 | SENSOR_ATTR_IN(9), | |
6800c3d0 RM |
1116 | SENSOR_ATTR_FAN(1), |
1117 | SENSOR_ATTR_FAN(2), | |
1118 | SENSOR_ATTR_FAN(3), | |
1119 | SENSOR_ATTR_FAN(4), | |
1120 | SENSOR_ATTR_FAN(5), | |
1121 | SENSOR_ATTR_PWM(1), | |
1122 | SENSOR_ATTR_PWM(2), | |
1123 | SENSOR_ATTR_PWM(3), | |
1124 | }; | |
1125 | ||
46bed4df GJ |
1126 | static struct sensor_device_attribute_2 w83793_temp[] = { |
1127 | SENSOR_ATTR_TEMP(1), | |
1128 | SENSOR_ATTR_TEMP(2), | |
1129 | SENSOR_ATTR_TEMP(3), | |
1130 | SENSOR_ATTR_TEMP(4), | |
1131 | SENSOR_ATTR_TEMP(5), | |
1132 | SENSOR_ATTR_TEMP(6), | |
1133 | }; | |
1134 | ||
6800c3d0 RM |
1135 | /* Fan6-Fan12 */ |
1136 | static struct sensor_device_attribute_2 w83793_left_fan[] = { | |
1137 | SENSOR_ATTR_FAN(6), | |
1138 | SENSOR_ATTR_FAN(7), | |
1139 | SENSOR_ATTR_FAN(8), | |
1140 | SENSOR_ATTR_FAN(9), | |
1141 | SENSOR_ATTR_FAN(10), | |
1142 | SENSOR_ATTR_FAN(11), | |
1143 | SENSOR_ATTR_FAN(12), | |
1144 | }; | |
1145 | ||
1146 | /* Pwm4-Pwm8 */ | |
1147 | static struct sensor_device_attribute_2 w83793_left_pwm[] = { | |
1148 | SENSOR_ATTR_PWM(4), | |
1149 | SENSOR_ATTR_PWM(5), | |
1150 | SENSOR_ATTR_PWM(6), | |
1151 | SENSOR_ATTR_PWM(7), | |
1152 | SENSOR_ATTR_PWM(8), | |
1153 | }; | |
1154 | ||
c70a8c34 | 1155 | static struct sensor_device_attribute_2 w83793_vid[] = { |
6800c3d0 RM |
1156 | SENSOR_ATTR_2(cpu0_vid, S_IRUGO, show_vid, NULL, NOT_USED, 0), |
1157 | SENSOR_ATTR_2(cpu1_vid, S_IRUGO, show_vid, NULL, NOT_USED, 1), | |
c70a8c34 | 1158 | }; |
329beb71 | 1159 | static DEVICE_ATTR_RW(vrm); |
c70a8c34 GJ |
1160 | |
1161 | static struct sensor_device_attribute_2 sda_single_files[] = { | |
a516dc3e | 1162 | SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, |
6800c3d0 RM |
1163 | store_chassis_clear, ALARM_STATUS, 30), |
1164 | SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable, | |
1165 | store_beep_enable, NOT_USED, NOT_USED), | |
1166 | SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, | |
1167 | store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), | |
1168 | SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, | |
1169 | store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), | |
1170 | SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, | |
1171 | store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), | |
1172 | SENSOR_ATTR_2(temp_critical, S_IWUSR | S_IRUGO, show_sf_setup, | |
1173 | store_sf_setup, SETUP_TEMP_CRITICAL, NOT_USED), | |
1174 | }; | |
1175 | ||
1176 | static void w83793_init_client(struct i2c_client *client) | |
1177 | { | |
47efe877 | 1178 | if (reset) |
6800c3d0 | 1179 | w83793_write_value(client, W83793_REG_CONFIG, 0x80); |
6800c3d0 RM |
1180 | |
1181 | /* Start monitoring */ | |
1182 | w83793_write_value(client, W83793_REG_CONFIG, | |
1183 | w83793_read_value(client, W83793_REG_CONFIG) | 0x01); | |
5852f960 SA |
1184 | } |
1185 | ||
1186 | /* | |
1187 | * Watchdog routines | |
1188 | */ | |
1189 | ||
1190 | static int watchdog_set_timeout(struct w83793_data *data, int timeout) | |
1191 | { | |
26336c8a DC |
1192 | unsigned int mtimeout; |
1193 | int ret; | |
5852f960 SA |
1194 | |
1195 | mtimeout = DIV_ROUND_UP(timeout, 60); | |
1196 | ||
1197 | if (mtimeout > 255) | |
1198 | return -EINVAL; | |
1199 | ||
1200 | mutex_lock(&data->watchdog_lock); | |
1201 | if (!data->client) { | |
1202 | ret = -ENODEV; | |
1203 | goto leave; | |
1204 | } | |
1205 | ||
1206 | data->watchdog_timeout = mtimeout; | |
1207 | ||
1208 | /* Set Timeout value (in Minutes) */ | |
1209 | w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, | |
1210 | data->watchdog_timeout); | |
1211 | ||
1212 | ret = mtimeout * 60; | |
1213 | ||
1214 | leave: | |
1215 | mutex_unlock(&data->watchdog_lock); | |
1216 | return ret; | |
1217 | } | |
1218 | ||
1219 | static int watchdog_get_timeout(struct w83793_data *data) | |
1220 | { | |
1221 | int timeout; | |
1222 | ||
1223 | mutex_lock(&data->watchdog_lock); | |
1224 | timeout = data->watchdog_timeout * 60; | |
1225 | mutex_unlock(&data->watchdog_lock); | |
1226 | ||
1227 | return timeout; | |
1228 | } | |
1229 | ||
1230 | static int watchdog_trigger(struct w83793_data *data) | |
1231 | { | |
1232 | int ret = 0; | |
1233 | ||
1234 | mutex_lock(&data->watchdog_lock); | |
1235 | if (!data->client) { | |
1236 | ret = -ENODEV; | |
1237 | goto leave; | |
1238 | } | |
1239 | ||
1240 | /* Set Timeout value (in Minutes) */ | |
1241 | w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, | |
1242 | data->watchdog_timeout); | |
1243 | ||
1244 | leave: | |
1245 | mutex_unlock(&data->watchdog_lock); | |
1246 | return ret; | |
1247 | } | |
1248 | ||
1249 | static int watchdog_enable(struct w83793_data *data) | |
1250 | { | |
1251 | int ret = 0; | |
1252 | ||
1253 | mutex_lock(&data->watchdog_lock); | |
1254 | if (!data->client) { | |
1255 | ret = -ENODEV; | |
1256 | goto leave; | |
1257 | } | |
1258 | ||
1259 | /* Set initial timeout */ | |
1260 | w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, | |
1261 | data->watchdog_timeout); | |
1262 | ||
1263 | /* Enable Soft Watchdog */ | |
1264 | w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0x55); | |
1265 | ||
1266 | leave: | |
1267 | mutex_unlock(&data->watchdog_lock); | |
1268 | return ret; | |
1269 | } | |
1270 | ||
1271 | static int watchdog_disable(struct w83793_data *data) | |
1272 | { | |
1273 | int ret = 0; | |
1274 | ||
1275 | mutex_lock(&data->watchdog_lock); | |
1276 | if (!data->client) { | |
1277 | ret = -ENODEV; | |
1278 | goto leave; | |
1279 | } | |
1280 | ||
1281 | /* Disable Soft Watchdog */ | |
1282 | w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0xAA); | |
1283 | ||
1284 | leave: | |
1285 | mutex_unlock(&data->watchdog_lock); | |
1286 | return ret; | |
1287 | } | |
1288 | ||
1289 | static int watchdog_open(struct inode *inode, struct file *filp) | |
1290 | { | |
1291 | struct w83793_data *pos, *data = NULL; | |
1292 | int watchdog_is_open; | |
1293 | ||
47efe877 GR |
1294 | /* |
1295 | * We get called from drivers/char/misc.c with misc_mtx hold, and we | |
1296 | * call misc_register() from w83793_probe() with watchdog_data_mutex | |
1297 | * hold, as misc_register() takes the misc_mtx lock, this is a possible | |
1298 | * deadlock, so we use mutex_trylock here. | |
1299 | */ | |
5852f960 SA |
1300 | if (!mutex_trylock(&watchdog_data_mutex)) |
1301 | return -ERESTARTSYS; | |
1302 | list_for_each_entry(pos, &watchdog_data_list, list) { | |
1303 | if (pos->watchdog_miscdev.minor == iminor(inode)) { | |
1304 | data = pos; | |
1305 | break; | |
1306 | } | |
1307 | } | |
1308 | ||
1309 | /* Check, if device is already open */ | |
1310 | watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open); | |
1311 | ||
47efe877 GR |
1312 | /* |
1313 | * Increase data reference counter (if not already done). | |
1314 | * Note we can never not have found data, so we don't check for this | |
1315 | */ | |
5852f960 SA |
1316 | if (!watchdog_is_open) |
1317 | kref_get(&data->kref); | |
1318 | ||
1319 | mutex_unlock(&watchdog_data_mutex); | |
1320 | ||
1321 | /* Check, if device is already open and possibly issue error */ | |
1322 | if (watchdog_is_open) | |
1323 | return -EBUSY; | |
1324 | ||
1325 | /* Enable Soft Watchdog */ | |
1326 | watchdog_enable(data); | |
1327 | ||
1328 | /* Store pointer to data into filp's private data */ | |
1329 | filp->private_data = data; | |
1330 | ||
c5bf68fe | 1331 | return stream_open(inode, filp); |
5852f960 SA |
1332 | } |
1333 | ||
1334 | static int watchdog_close(struct inode *inode, struct file *filp) | |
1335 | { | |
1336 | struct w83793_data *data = filp->private_data; | |
6800c3d0 | 1337 | |
5852f960 SA |
1338 | if (data->watchdog_expect_close) { |
1339 | watchdog_disable(data); | |
1340 | data->watchdog_expect_close = 0; | |
1341 | } else { | |
1342 | watchdog_trigger(data); | |
1343 | dev_crit(&data->client->dev, | |
1344 | "unexpected close, not stopping watchdog!\n"); | |
1345 | } | |
1346 | ||
1347 | clear_bit(0, &data->watchdog_is_open); | |
1348 | ||
1349 | /* Decrease data reference counter */ | |
1350 | mutex_lock(&watchdog_data_mutex); | |
1351 | kref_put(&data->kref, w83793_release_resources); | |
1352 | mutex_unlock(&watchdog_data_mutex); | |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | static ssize_t watchdog_write(struct file *filp, const char __user *buf, | |
1358 | size_t count, loff_t *offset) | |
1359 | { | |
3f7cd7ea | 1360 | ssize_t ret; |
5852f960 SA |
1361 | struct w83793_data *data = filp->private_data; |
1362 | ||
1363 | if (count) { | |
1364 | if (!nowayout) { | |
1365 | size_t i; | |
1366 | ||
1367 | /* Clear it in case it was set with a previous write */ | |
1368 | data->watchdog_expect_close = 0; | |
1369 | ||
1370 | for (i = 0; i != count; i++) { | |
1371 | char c; | |
1372 | if (get_user(c, buf + i)) | |
1373 | return -EFAULT; | |
1374 | if (c == 'V') | |
1375 | data->watchdog_expect_close = 1; | |
1376 | } | |
1377 | } | |
1378 | ret = watchdog_trigger(data); | |
1379 | if (ret < 0) | |
1380 | return ret; | |
1381 | } | |
1382 | return count; | |
1383 | } | |
1384 | ||
55929332 AB |
1385 | static long watchdog_ioctl(struct file *filp, unsigned int cmd, |
1386 | unsigned long arg) | |
5852f960 | 1387 | { |
36c7fe13 | 1388 | struct watchdog_info ident = { |
5852f960 SA |
1389 | .options = WDIOF_KEEPALIVEPING | |
1390 | WDIOF_SETTIMEOUT | | |
1391 | WDIOF_CARDRESET, | |
1392 | .identity = "w83793 watchdog" | |
1393 | }; | |
1394 | ||
1395 | int val, ret = 0; | |
1396 | struct w83793_data *data = filp->private_data; | |
1397 | ||
1398 | switch (cmd) { | |
1399 | case WDIOC_GETSUPPORT: | |
1400 | if (!nowayout) | |
1401 | ident.options |= WDIOF_MAGICCLOSE; | |
1402 | if (copy_to_user((void __user *)arg, &ident, sizeof(ident))) | |
1403 | ret = -EFAULT; | |
1404 | break; | |
1405 | ||
1406 | case WDIOC_GETSTATUS: | |
1407 | val = data->watchdog_caused_reboot ? WDIOF_CARDRESET : 0; | |
1408 | ret = put_user(val, (int __user *)arg); | |
1409 | break; | |
1410 | ||
1411 | case WDIOC_GETBOOTSTATUS: | |
1412 | ret = put_user(0, (int __user *)arg); | |
1413 | break; | |
1414 | ||
1415 | case WDIOC_KEEPALIVE: | |
1416 | ret = watchdog_trigger(data); | |
1417 | break; | |
1418 | ||
1419 | case WDIOC_GETTIMEOUT: | |
1420 | val = watchdog_get_timeout(data); | |
1421 | ret = put_user(val, (int __user *)arg); | |
1422 | break; | |
1423 | ||
1424 | case WDIOC_SETTIMEOUT: | |
1425 | if (get_user(val, (int __user *)arg)) { | |
1426 | ret = -EFAULT; | |
1427 | break; | |
1428 | } | |
1429 | ret = watchdog_set_timeout(data, val); | |
1430 | if (ret > 0) | |
1431 | ret = put_user(ret, (int __user *)arg); | |
1432 | break; | |
1433 | ||
1434 | case WDIOC_SETOPTIONS: | |
1435 | if (get_user(val, (int __user *)arg)) { | |
1436 | ret = -EFAULT; | |
1437 | break; | |
1438 | } | |
1439 | ||
1440 | if (val & WDIOS_DISABLECARD) | |
1441 | ret = watchdog_disable(data); | |
1442 | else if (val & WDIOS_ENABLECARD) | |
1443 | ret = watchdog_enable(data); | |
1444 | else | |
1445 | ret = -EINVAL; | |
1446 | ||
1447 | break; | |
1448 | default: | |
1449 | ret = -ENOTTY; | |
1450 | } | |
5852f960 SA |
1451 | return ret; |
1452 | } | |
1453 | ||
1454 | static const struct file_operations watchdog_fops = { | |
1455 | .owner = THIS_MODULE, | |
1456 | .llseek = no_llseek, | |
1457 | .open = watchdog_open, | |
1458 | .release = watchdog_close, | |
1459 | .write = watchdog_write, | |
55929332 | 1460 | .unlocked_ioctl = watchdog_ioctl, |
b6dfb247 | 1461 | .compat_ioctl = compat_ptr_ioctl, |
5852f960 SA |
1462 | }; |
1463 | ||
1464 | /* | |
1465 | * Notifier for system down | |
1466 | */ | |
1467 | ||
1468 | static int watchdog_notify_sys(struct notifier_block *this, unsigned long code, | |
1469 | void *unused) | |
1470 | { | |
1471 | struct w83793_data *data = NULL; | |
1472 | ||
1473 | if (code == SYS_DOWN || code == SYS_HALT) { | |
1474 | ||
1475 | /* Disable each registered watchdog */ | |
1476 | mutex_lock(&watchdog_data_mutex); | |
1477 | list_for_each_entry(data, &watchdog_data_list, list) { | |
1478 | if (data->watchdog_miscdev.minor) | |
1479 | watchdog_disable(data); | |
1480 | } | |
1481 | mutex_unlock(&watchdog_data_mutex); | |
1482 | } | |
1483 | ||
1484 | return NOTIFY_DONE; | |
6800c3d0 RM |
1485 | } |
1486 | ||
5852f960 SA |
1487 | /* |
1488 | * The WDT needs to learn about soft shutdowns in order to | |
1489 | * turn the timebomb registers off. | |
1490 | */ | |
1491 | ||
1492 | static struct notifier_block watchdog_notifier = { | |
1493 | .notifier_call = watchdog_notify_sys, | |
1494 | }; | |
1495 | ||
1496 | /* | |
1497 | * Init / remove routines | |
1498 | */ | |
1499 | ||
a7f13a6e | 1500 | static int w83793_remove(struct i2c_client *client) |
6800c3d0 RM |
1501 | { |
1502 | struct w83793_data *data = i2c_get_clientdata(client); | |
1503 | struct device *dev = &client->dev; | |
5852f960 SA |
1504 | int i, tmp; |
1505 | ||
1506 | /* Unregister the watchdog (if registered) */ | |
1507 | if (data->watchdog_miscdev.minor) { | |
1508 | misc_deregister(&data->watchdog_miscdev); | |
1509 | ||
1510 | if (data->watchdog_is_open) { | |
1511 | dev_warn(&client->dev, | |
1512 | "i2c client detached with watchdog open! " | |
1513 | "Stopping watchdog.\n"); | |
1514 | watchdog_disable(data); | |
1515 | } | |
1516 | ||
1517 | mutex_lock(&watchdog_data_mutex); | |
1518 | list_del(&data->list); | |
1519 | mutex_unlock(&watchdog_data_mutex); | |
1520 | ||
1521 | /* Tell the watchdog code the client is gone */ | |
1522 | mutex_lock(&data->watchdog_lock); | |
1523 | data->client = NULL; | |
1524 | mutex_unlock(&data->watchdog_lock); | |
1525 | } | |
1526 | ||
1527 | /* Reset Configuration Register to Disable Watch Dog Registers */ | |
1528 | tmp = w83793_read_value(client, W83793_REG_CONFIG); | |
1529 | w83793_write_value(client, W83793_REG_CONFIG, tmp & ~0x04); | |
1530 | ||
1531 | unregister_reboot_notifier(&watchdog_notifier); | |
6800c3d0 | 1532 | |
a7f13a6e | 1533 | hwmon_device_unregister(data->hwmon_dev); |
6800c3d0 | 1534 | |
a7f13a6e JD |
1535 | for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) |
1536 | device_remove_file(dev, | |
1537 | &w83793_sensor_attr_2[i].dev_attr); | |
6800c3d0 | 1538 | |
a7f13a6e JD |
1539 | for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) |
1540 | device_remove_file(dev, &sda_single_files[i].dev_attr); | |
6800c3d0 | 1541 | |
a7f13a6e JD |
1542 | for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) |
1543 | device_remove_file(dev, &w83793_vid[i].dev_attr); | |
1544 | device_remove_file(dev, &dev_attr_vrm); | |
c70a8c34 | 1545 | |
a7f13a6e JD |
1546 | for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) |
1547 | device_remove_file(dev, &w83793_left_fan[i].dev_attr); | |
6800c3d0 | 1548 | |
a7f13a6e JD |
1549 | for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) |
1550 | device_remove_file(dev, &w83793_left_pwm[i].dev_attr); | |
46bed4df | 1551 | |
a7f13a6e JD |
1552 | for (i = 0; i < ARRAY_SIZE(w83793_temp); i++) |
1553 | device_remove_file(dev, &w83793_temp[i].dev_attr); | |
6800c3d0 | 1554 | |
5852f960 SA |
1555 | /* Decrease data reference counter */ |
1556 | mutex_lock(&watchdog_data_mutex); | |
1557 | kref_put(&data->kref, w83793_release_resources); | |
1558 | mutex_unlock(&watchdog_data_mutex); | |
6800c3d0 RM |
1559 | |
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | static int | |
a7f13a6e | 1564 | w83793_detect_subclients(struct i2c_client *client) |
6800c3d0 | 1565 | { |
cf48d176 | 1566 | int i, id; |
a7f13a6e | 1567 | int address = client->addr; |
6800c3d0 | 1568 | u8 tmp; |
a7f13a6e | 1569 | struct i2c_adapter *adapter = client->adapter; |
6800c3d0 RM |
1570 | struct w83793_data *data = i2c_get_clientdata(client); |
1571 | ||
1572 | id = i2c_adapter_id(adapter); | |
1573 | if (force_subclients[0] == id && force_subclients[1] == address) { | |
1574 | for (i = 2; i <= 3; i++) { | |
1575 | if (force_subclients[i] < 0x48 | |
1576 | || force_subclients[i] > 0x4f) { | |
1577 | dev_err(&client->dev, | |
1578 | "invalid subclient " | |
1579 | "address %d; must be 0x48-0x4f\n", | |
1580 | force_subclients[i]); | |
cf48d176 | 1581 | return -EINVAL; |
6800c3d0 RM |
1582 | } |
1583 | } | |
1584 | w83793_write_value(client, W83793_REG_I2C_SUBADDR, | |
1585 | (force_subclients[2] & 0x07) | | |
1586 | ((force_subclients[3] & 0x07) << 4)); | |
1587 | } | |
1588 | ||
1589 | tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR); | |
47efe877 | 1590 | if (!(tmp & 0x08)) |
cf48d176 WS |
1591 | data->lm75[0] = devm_i2c_new_dummy_device(&client->dev, adapter, |
1592 | 0x48 + (tmp & 0x7)); | |
6800c3d0 | 1593 | if (!(tmp & 0x80)) { |
cf48d176 | 1594 | if (!IS_ERR(data->lm75[0]) |
6800c3d0 RM |
1595 | && ((tmp & 0x7) == ((tmp >> 4) & 0x7))) { |
1596 | dev_err(&client->dev, | |
1597 | "duplicate addresses 0x%x, " | |
1598 | "use force_subclients\n", data->lm75[0]->addr); | |
cf48d176 | 1599 | return -ENODEV; |
6800c3d0 | 1600 | } |
cf48d176 WS |
1601 | data->lm75[1] = devm_i2c_new_dummy_device(&client->dev, adapter, |
1602 | 0x48 + ((tmp >> 4) & 0x7)); | |
6800c3d0 RM |
1603 | } |
1604 | ||
1605 | return 0; | |
6800c3d0 RM |
1606 | } |
1607 | ||
a7f13a6e | 1608 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 1609 | static int w83793_detect(struct i2c_client *client, |
a7f13a6e | 1610 | struct i2c_board_info *info) |
6800c3d0 | 1611 | { |
52df6440 | 1612 | u8 tmp, bank, chip_id; |
a7f13a6e JD |
1613 | struct i2c_adapter *adapter = client->adapter; |
1614 | unsigned short address = client->addr; | |
6800c3d0 | 1615 | |
47efe877 | 1616 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
a7f13a6e | 1617 | return -ENODEV; |
6800c3d0 | 1618 | |
a7f13a6e | 1619 | bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL); |
6800c3d0 | 1620 | |
52df6440 JD |
1621 | tmp = bank & 0x80 ? 0x5c : 0xa3; |
1622 | /* Check Winbond vendor ID */ | |
1623 | if (tmp != i2c_smbus_read_byte_data(client, W83793_REG_VENDORID)) { | |
1624 | pr_debug("w83793: Detection failed at check vendor id\n"); | |
1625 | return -ENODEV; | |
6800c3d0 RM |
1626 | } |
1627 | ||
47efe877 GR |
1628 | /* |
1629 | * If Winbond chip, address of chip and W83793_REG_I2C_ADDR | |
1630 | * should match | |
1631 | */ | |
52df6440 JD |
1632 | if ((bank & 0x07) == 0 |
1633 | && i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) != | |
1634 | (address << 1)) { | |
1635 | pr_debug("w83793: Detection failed at check i2c addr\n"); | |
1636 | return -ENODEV; | |
6800c3d0 RM |
1637 | } |
1638 | ||
52df6440 JD |
1639 | /* Determine the chip type now */ |
1640 | chip_id = i2c_smbus_read_byte_data(client, W83793_REG_CHIPID); | |
1641 | if (chip_id != 0x7b) | |
1642 | return -ENODEV; | |
1643 | ||
a7f13a6e JD |
1644 | strlcpy(info->type, "w83793", I2C_NAME_SIZE); |
1645 | ||
1646 | return 0; | |
1647 | } | |
6800c3d0 | 1648 | |
a7f13a6e JD |
1649 | static int w83793_probe(struct i2c_client *client, |
1650 | const struct i2c_device_id *id) | |
1651 | { | |
1652 | struct device *dev = &client->dev; | |
7a76a7f3 CIK |
1653 | static const int watchdog_minors[] = { |
1654 | WATCHDOG_MINOR, 212, 213, 214, 215 | |
1655 | }; | |
a7f13a6e JD |
1656 | struct w83793_data *data; |
1657 | int i, tmp, val, err; | |
1658 | int files_fan = ARRAY_SIZE(w83793_left_fan) / 7; | |
1659 | int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5; | |
1660 | int files_temp = ARRAY_SIZE(w83793_temp) / 6; | |
1661 | ||
1662 | data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL); | |
1663 | if (!data) { | |
1664 | err = -ENOMEM; | |
1665 | goto exit; | |
1666 | } | |
1667 | ||
1668 | i2c_set_clientdata(client, data); | |
1669 | data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL); | |
6800c3d0 | 1670 | mutex_init(&data->update_lock); |
5852f960 SA |
1671 | mutex_init(&data->watchdog_lock); |
1672 | INIT_LIST_HEAD(&data->list); | |
1673 | kref_init(&data->kref); | |
1674 | ||
47efe877 GR |
1675 | /* |
1676 | * Store client pointer in our data struct for watchdog usage | |
1677 | * (where the client is found through a data ptr instead of the | |
1678 | * otherway around) | |
1679 | */ | |
5852f960 | 1680 | data->client = client; |
6800c3d0 | 1681 | |
a7f13a6e JD |
1682 | err = w83793_detect_subclients(client); |
1683 | if (err) | |
6800c3d0 RM |
1684 | goto free_mem; |
1685 | ||
6800c3d0 RM |
1686 | /* Initialize the chip */ |
1687 | w83793_init_client(client); | |
1688 | ||
6800c3d0 | 1689 | /* |
47efe877 GR |
1690 | * Only fan 1-5 has their own input pins, |
1691 | * Pwm 1-3 has their own pins | |
6800c3d0 RM |
1692 | */ |
1693 | data->has_fan = 0x1f; | |
1694 | data->has_pwm = 0x07; | |
1695 | tmp = w83793_read_value(client, W83793_REG_MFC); | |
1696 | val = w83793_read_value(client, W83793_REG_FANIN_CTRL); | |
1697 | ||
1698 | /* check the function of pins 49-56 */ | |
93c75a4a JD |
1699 | if (tmp & 0x80) { |
1700 | data->has_vid |= 0x2; /* has VIDB */ | |
1701 | } else { | |
6800c3d0 RM |
1702 | data->has_pwm |= 0x18; /* pwm 4,5 */ |
1703 | if (val & 0x01) { /* fan 6 */ | |
1704 | data->has_fan |= 0x20; | |
1705 | data->has_pwm |= 0x20; | |
1706 | } | |
1707 | if (val & 0x02) { /* fan 7 */ | |
1708 | data->has_fan |= 0x40; | |
1709 | data->has_pwm |= 0x40; | |
1710 | } | |
1711 | if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */ | |
1712 | data->has_fan |= 0x80; | |
1713 | data->has_pwm |= 0x80; | |
1714 | } | |
1715 | } | |
1716 | ||
93c75a4a JD |
1717 | /* check the function of pins 37-40 */ |
1718 | if (!(tmp & 0x29)) | |
1719 | data->has_vid |= 0x1; /* has VIDA */ | |
6800c3d0 RM |
1720 | if (0x08 == (tmp & 0x0c)) { |
1721 | if (val & 0x08) /* fan 9 */ | |
1722 | data->has_fan |= 0x100; | |
1723 | if (val & 0x10) /* fan 10 */ | |
1724 | data->has_fan |= 0x200; | |
1725 | } | |
6800c3d0 RM |
1726 | if (0x20 == (tmp & 0x30)) { |
1727 | if (val & 0x20) /* fan 11 */ | |
1728 | data->has_fan |= 0x400; | |
1729 | if (val & 0x40) /* fan 12 */ | |
1730 | data->has_fan |= 0x800; | |
1731 | } | |
1732 | ||
1733 | if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */ | |
1734 | data->has_fan |= 0x80; | |
1735 | data->has_pwm |= 0x80; | |
1736 | } | |
1737 | ||
c9294315 RM |
1738 | tmp = w83793_read_value(client, W83793_REG_FANIN_SEL); |
1739 | if ((tmp & 0x01) && (val & 0x08)) { /* fan 9, second location */ | |
1740 | data->has_fan |= 0x100; | |
1741 | } | |
1742 | if ((tmp & 0x02) && (val & 0x10)) { /* fan 10, second location */ | |
1743 | data->has_fan |= 0x200; | |
1744 | } | |
1745 | if ((tmp & 0x04) && (val & 0x20)) { /* fan 11, second location */ | |
1746 | data->has_fan |= 0x400; | |
1747 | } | |
1748 | if ((tmp & 0x08) && (val & 0x40)) { /* fan 12, second location */ | |
1749 | data->has_fan |= 0x800; | |
1750 | } | |
1751 | ||
46bed4df | 1752 | /* check the temp1-6 mode, ignore former AMDSI selected inputs */ |
47efe877 | 1753 | tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[0]); |
46bed4df GJ |
1754 | if (tmp & 0x01) |
1755 | data->has_temp |= 0x01; | |
1756 | if (tmp & 0x04) | |
1757 | data->has_temp |= 0x02; | |
1758 | if (tmp & 0x10) | |
1759 | data->has_temp |= 0x04; | |
1760 | if (tmp & 0x40) | |
1761 | data->has_temp |= 0x08; | |
1762 | ||
47efe877 | 1763 | tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[1]); |
46bed4df GJ |
1764 | if (tmp & 0x01) |
1765 | data->has_temp |= 0x10; | |
1766 | if (tmp & 0x02) | |
1767 | data->has_temp |= 0x20; | |
1768 | ||
6800c3d0 RM |
1769 | /* Register sysfs hooks */ |
1770 | for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) { | |
1771 | err = device_create_file(dev, | |
1772 | &w83793_sensor_attr_2[i].dev_attr); | |
1773 | if (err) | |
1774 | goto exit_remove; | |
1775 | } | |
1776 | ||
c70a8c34 GJ |
1777 | for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) { |
1778 | if (!(data->has_vid & (1 << i))) | |
1779 | continue; | |
1780 | err = device_create_file(dev, &w83793_vid[i].dev_attr); | |
1781 | if (err) | |
1782 | goto exit_remove; | |
1783 | } | |
93c75a4a JD |
1784 | if (data->has_vid) { |
1785 | data->vrm = vid_which_vrm(); | |
1786 | err = device_create_file(dev, &dev_attr_vrm); | |
1787 | if (err) | |
1788 | goto exit_remove; | |
1789 | } | |
c70a8c34 | 1790 | |
6800c3d0 RM |
1791 | for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { |
1792 | err = device_create_file(dev, &sda_single_files[i].dev_attr); | |
1793 | if (err) | |
1794 | goto exit_remove; | |
1795 | ||
1796 | } | |
1797 | ||
46bed4df GJ |
1798 | for (i = 0; i < 6; i++) { |
1799 | int j; | |
1800 | if (!(data->has_temp & (1 << i))) | |
1801 | continue; | |
1802 | for (j = 0; j < files_temp; j++) { | |
1803 | err = device_create_file(dev, | |
1804 | &w83793_temp[(i) * files_temp | |
1805 | + j].dev_attr); | |
1806 | if (err) | |
1807 | goto exit_remove; | |
1808 | } | |
1809 | } | |
1810 | ||
6800c3d0 RM |
1811 | for (i = 5; i < 12; i++) { |
1812 | int j; | |
1813 | if (!(data->has_fan & (1 << i))) | |
1814 | continue; | |
1815 | for (j = 0; j < files_fan; j++) { | |
1816 | err = device_create_file(dev, | |
1817 | &w83793_left_fan[(i - 5) * files_fan | |
1818 | + j].dev_attr); | |
1819 | if (err) | |
1820 | goto exit_remove; | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | for (i = 3; i < 8; i++) { | |
1825 | int j; | |
1826 | if (!(data->has_pwm & (1 << i))) | |
1827 | continue; | |
1828 | for (j = 0; j < files_pwm; j++) { | |
1829 | err = device_create_file(dev, | |
1830 | &w83793_left_pwm[(i - 3) * files_pwm | |
1831 | + j].dev_attr); | |
1832 | if (err) | |
1833 | goto exit_remove; | |
1834 | } | |
1835 | } | |
1836 | ||
1beeffe4 TJ |
1837 | data->hwmon_dev = hwmon_device_register(dev); |
1838 | if (IS_ERR(data->hwmon_dev)) { | |
1839 | err = PTR_ERR(data->hwmon_dev); | |
6800c3d0 RM |
1840 | goto exit_remove; |
1841 | } | |
1842 | ||
5852f960 SA |
1843 | /* Watchdog initialization */ |
1844 | ||
1845 | /* Register boot notifier */ | |
1846 | err = register_reboot_notifier(&watchdog_notifier); | |
1847 | if (err != 0) { | |
1848 | dev_err(&client->dev, | |
1849 | "cannot register reboot notifier (err=%d)\n", err); | |
1850 | goto exit_devunreg; | |
1851 | } | |
1852 | ||
47efe877 GR |
1853 | /* |
1854 | * Enable Watchdog registers. | |
1855 | * Set Configuration Register to Enable Watch Dog Registers | |
1856 | * (Bit 2) = XXXX, X1XX. | |
1857 | */ | |
5852f960 SA |
1858 | tmp = w83793_read_value(client, W83793_REG_CONFIG); |
1859 | w83793_write_value(client, W83793_REG_CONFIG, tmp | 0x04); | |
1860 | ||
1861 | /* Set the default watchdog timeout */ | |
1862 | data->watchdog_timeout = timeout; | |
1863 | ||
1864 | /* Check, if last reboot was caused by watchdog */ | |
1865 | data->watchdog_caused_reboot = | |
1866 | w83793_read_value(data->client, W83793_REG_WDT_STATUS) & 0x01; | |
1867 | ||
1868 | /* Disable Soft Watchdog during initialiation */ | |
1869 | watchdog_disable(data); | |
1870 | ||
47efe877 GR |
1871 | /* |
1872 | * We take the data_mutex lock early so that watchdog_open() cannot | |
1873 | * run when misc_register() has completed, but we've not yet added | |
1874 | * our data to the watchdog_data_list (and set the default timeout) | |
1875 | */ | |
5852f960 SA |
1876 | mutex_lock(&watchdog_data_mutex); |
1877 | for (i = 0; i < ARRAY_SIZE(watchdog_minors); i++) { | |
1878 | /* Register our watchdog part */ | |
1879 | snprintf(data->watchdog_name, sizeof(data->watchdog_name), | |
1880 | "watchdog%c", (i == 0) ? '\0' : ('0' + i)); | |
1881 | data->watchdog_miscdev.name = data->watchdog_name; | |
1882 | data->watchdog_miscdev.fops = &watchdog_fops; | |
1883 | data->watchdog_miscdev.minor = watchdog_minors[i]; | |
1884 | ||
1885 | err = misc_register(&data->watchdog_miscdev); | |
1886 | if (err == -EBUSY) | |
1887 | continue; | |
1888 | if (err) { | |
1889 | data->watchdog_miscdev.minor = 0; | |
1890 | dev_err(&client->dev, | |
1891 | "Registering watchdog chardev: %d\n", err); | |
1892 | break; | |
1893 | } | |
1894 | ||
1895 | list_add(&data->list, &watchdog_data_list); | |
1896 | ||
1897 | dev_info(&client->dev, | |
1898 | "Registered watchdog chardev major 10, minor: %d\n", | |
1899 | watchdog_minors[i]); | |
1900 | break; | |
1901 | } | |
1902 | if (i == ARRAY_SIZE(watchdog_minors)) { | |
1903 | data->watchdog_miscdev.minor = 0; | |
b55f3757 GR |
1904 | dev_warn(&client->dev, |
1905 | "Couldn't register watchdog chardev (due to no free minor)\n"); | |
5852f960 SA |
1906 | } |
1907 | ||
1908 | mutex_unlock(&watchdog_data_mutex); | |
1909 | ||
6800c3d0 RM |
1910 | return 0; |
1911 | ||
5852f960 SA |
1912 | /* Unregister hwmon device */ |
1913 | ||
1914 | exit_devunreg: | |
1915 | ||
1916 | hwmon_device_unregister(data->hwmon_dev); | |
1917 | ||
6800c3d0 RM |
1918 | /* Unregister sysfs hooks */ |
1919 | ||
1920 | exit_remove: | |
1921 | for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) | |
1922 | device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr); | |
1923 | ||
1924 | for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) | |
1925 | device_remove_file(dev, &sda_single_files[i].dev_attr); | |
1926 | ||
c70a8c34 GJ |
1927 | for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) |
1928 | device_remove_file(dev, &w83793_vid[i].dev_attr); | |
1929 | ||
6800c3d0 RM |
1930 | for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) |
1931 | device_remove_file(dev, &w83793_left_fan[i].dev_attr); | |
1932 | ||
1933 | for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) | |
1934 | device_remove_file(dev, &w83793_left_pwm[i].dev_attr); | |
1935 | ||
46bed4df GJ |
1936 | for (i = 0; i < ARRAY_SIZE(w83793_temp); i++) |
1937 | device_remove_file(dev, &w83793_temp[i].dev_attr); | |
6800c3d0 RM |
1938 | free_mem: |
1939 | kfree(data); | |
1940 | exit: | |
1941 | return err; | |
1942 | } | |
1943 | ||
1944 | static void w83793_update_nonvolatile(struct device *dev) | |
1945 | { | |
1946 | struct i2c_client *client = to_i2c_client(dev); | |
1947 | struct w83793_data *data = i2c_get_clientdata(client); | |
1948 | int i, j; | |
1949 | /* | |
47efe877 GR |
1950 | * They are somewhat "stable" registers, and to update them every time |
1951 | * takes so much time, it's just not worthy. Update them in a long | |
1952 | * interval to avoid exception. | |
6800c3d0 RM |
1953 | */ |
1954 | if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300) | |
1955 | || !data->valid)) | |
1956 | return; | |
1957 | /* update voltage limits */ | |
1958 | for (i = 1; i < 3; i++) { | |
1959 | for (j = 0; j < ARRAY_SIZE(data->in); j++) { | |
1960 | data->in[j][i] = | |
1961 | w83793_read_value(client, W83793_REG_IN[j][i]); | |
1962 | } | |
1963 | data->in_low_bits[i] = | |
1964 | w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]); | |
1965 | } | |
1966 | ||
1967 | for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) { | |
1968 | /* Update the Fan measured value and limits */ | |
47efe877 | 1969 | if (!(data->has_fan & (1 << i))) |
6800c3d0 | 1970 | continue; |
6800c3d0 RM |
1971 | data->fan_min[i] = |
1972 | w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8; | |
1973 | data->fan_min[i] |= | |
1974 | w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1); | |
1975 | } | |
1976 | ||
1977 | for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) { | |
46bed4df GJ |
1978 | if (!(data->has_temp & (1 << i))) |
1979 | continue; | |
6800c3d0 RM |
1980 | data->temp_fan_map[i] = |
1981 | w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i)); | |
1982 | for (j = 1; j < 5; j++) { | |
1983 | data->temp[i][j] = | |
1984 | w83793_read_value(client, W83793_REG_TEMP[i][j]); | |
1985 | } | |
1986 | data->temp_cruise[i] = | |
1987 | w83793_read_value(client, W83793_REG_TEMP_CRUISE(i)); | |
1988 | for (j = 0; j < 7; j++) { | |
1989 | data->sf2_pwm[i][j] = | |
1990 | w83793_read_value(client, W83793_REG_SF2_PWM(i, j)); | |
1991 | data->sf2_temp[i][j] = | |
1992 | w83793_read_value(client, | |
1993 | W83793_REG_SF2_TEMP(i, j)); | |
1994 | } | |
1995 | } | |
1996 | ||
1997 | for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++) | |
1998 | data->temp_mode[i] = | |
1999 | w83793_read_value(client, W83793_REG_TEMP_MODE[i]); | |
2000 | ||
2001 | for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) { | |
2002 | data->tolerance[i] = | |
2003 | w83793_read_value(client, W83793_REG_TEMP_TOL(i)); | |
2004 | } | |
2005 | ||
2006 | for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { | |
2007 | if (!(data->has_pwm & (1 << i))) | |
2008 | continue; | |
2009 | data->pwm[i][PWM_NONSTOP] = | |
2010 | w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP)); | |
2011 | data->pwm[i][PWM_START] = | |
2012 | w83793_read_value(client, W83793_REG_PWM(i, PWM_START)); | |
2013 | data->pwm_stop_time[i] = | |
2014 | w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i)); | |
2015 | } | |
2016 | ||
2017 | data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT); | |
2018 | data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE); | |
2019 | data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME); | |
2020 | data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME); | |
2021 | data->temp_critical = | |
2022 | w83793_read_value(client, W83793_REG_TEMP_CRITICAL); | |
2023 | data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP); | |
2024 | ||
47efe877 | 2025 | for (i = 0; i < ARRAY_SIZE(data->beeps); i++) |
6800c3d0 | 2026 | data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i)); |
6800c3d0 RM |
2027 | |
2028 | data->last_nonvolatile = jiffies; | |
2029 | } | |
2030 | ||
2031 | static struct w83793_data *w83793_update_device(struct device *dev) | |
2032 | { | |
2033 | struct i2c_client *client = to_i2c_client(dev); | |
2034 | struct w83793_data *data = i2c_get_clientdata(client); | |
2035 | int i; | |
2036 | ||
2037 | mutex_lock(&data->update_lock); | |
2038 | ||
2039 | if (!(time_after(jiffies, data->last_updated + HZ * 2) | |
2040 | || !data->valid)) | |
2041 | goto END; | |
2042 | ||
2043 | /* Update the voltages measured value and limits */ | |
2044 | for (i = 0; i < ARRAY_SIZE(data->in); i++) | |
2045 | data->in[i][IN_READ] = | |
2046 | w83793_read_value(client, W83793_REG_IN[i][IN_READ]); | |
2047 | ||
2048 | data->in_low_bits[IN_READ] = | |
2049 | w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]); | |
2050 | ||
2051 | for (i = 0; i < ARRAY_SIZE(data->fan); i++) { | |
47efe877 | 2052 | if (!(data->has_fan & (1 << i))) |
6800c3d0 | 2053 | continue; |
6800c3d0 RM |
2054 | data->fan[i] = |
2055 | w83793_read_value(client, W83793_REG_FAN(i)) << 8; | |
2056 | data->fan[i] |= | |
2057 | w83793_read_value(client, W83793_REG_FAN(i) + 1); | |
2058 | } | |
2059 | ||
46bed4df GJ |
2060 | for (i = 0; i < ARRAY_SIZE(data->temp); i++) { |
2061 | if (!(data->has_temp & (1 << i))) | |
2062 | continue; | |
6800c3d0 RM |
2063 | data->temp[i][TEMP_READ] = |
2064 | w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]); | |
46bed4df | 2065 | } |
6800c3d0 RM |
2066 | |
2067 | data->temp_low_bits = | |
2068 | w83793_read_value(client, W83793_REG_TEMP_LOW_BITS); | |
2069 | ||
2070 | for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { | |
2071 | if (data->has_pwm & (1 << i)) | |
2072 | data->pwm[i][PWM_DUTY] = | |
2073 | w83793_read_value(client, | |
2074 | W83793_REG_PWM(i, PWM_DUTY)); | |
2075 | } | |
2076 | ||
2077 | for (i = 0; i < ARRAY_SIZE(data->alarms); i++) | |
2078 | data->alarms[i] = | |
2079 | w83793_read_value(client, W83793_REG_ALARM(i)); | |
c70a8c34 GJ |
2080 | if (data->has_vid & 0x01) |
2081 | data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA); | |
2082 | if (data->has_vid & 0x02) | |
2083 | data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB); | |
6800c3d0 RM |
2084 | w83793_update_nonvolatile(dev); |
2085 | data->last_updated = jiffies; | |
2086 | data->valid = 1; | |
2087 | ||
2088 | END: | |
2089 | mutex_unlock(&data->update_lock); | |
2090 | return data; | |
2091 | } | |
2092 | ||
47efe877 GR |
2093 | /* |
2094 | * Ignore the possibility that somebody change bank outside the driver | |
2095 | * Must be called with data->update_lock held, except during initialization | |
2096 | */ | |
6800c3d0 RM |
2097 | static u8 w83793_read_value(struct i2c_client *client, u16 reg) |
2098 | { | |
2099 | struct w83793_data *data = i2c_get_clientdata(client); | |
58a24b52 | 2100 | u8 res; |
6800c3d0 RM |
2101 | u8 new_bank = reg >> 8; |
2102 | ||
2103 | new_bank |= data->bank & 0xfc; | |
2104 | if (data->bank != new_bank) { | |
2105 | if (i2c_smbus_write_byte_data | |
2106 | (client, W83793_REG_BANKSEL, new_bank) >= 0) | |
2107 | data->bank = new_bank; | |
2108 | else { | |
2109 | dev_err(&client->dev, | |
2110 | "set bank to %d failed, fall back " | |
2111 | "to bank %d, read reg 0x%x error\n", | |
2112 | new_bank, data->bank, reg); | |
2113 | res = 0x0; /* read 0x0 from the chip */ | |
2114 | goto END; | |
2115 | } | |
2116 | } | |
2117 | res = i2c_smbus_read_byte_data(client, reg & 0xff); | |
2118 | END: | |
2119 | return res; | |
2120 | } | |
2121 | ||
2122 | /* Must be called with data->update_lock held, except during initialization */ | |
2123 | static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value) | |
2124 | { | |
2125 | struct w83793_data *data = i2c_get_clientdata(client); | |
2126 | int res; | |
2127 | u8 new_bank = reg >> 8; | |
2128 | ||
2129 | new_bank |= data->bank & 0xfc; | |
2130 | if (data->bank != new_bank) { | |
47efe877 GR |
2131 | res = i2c_smbus_write_byte_data(client, W83793_REG_BANKSEL, |
2132 | new_bank); | |
2133 | if (res < 0) { | |
6800c3d0 RM |
2134 | dev_err(&client->dev, |
2135 | "set bank to %d failed, fall back " | |
2136 | "to bank %d, write reg 0x%x error\n", | |
2137 | new_bank, data->bank, reg); | |
2138 | goto END; | |
2139 | } | |
47efe877 | 2140 | data->bank = new_bank; |
6800c3d0 RM |
2141 | } |
2142 | ||
2143 | res = i2c_smbus_write_byte_data(client, reg & 0xff, value); | |
2144 | END: | |
2145 | return res; | |
2146 | } | |
2147 | ||
f0967eea | 2148 | module_i2c_driver(w83793_driver); |
6800c3d0 | 2149 | |
5852f960 | 2150 | MODULE_AUTHOR("Yuan Mu, Sven Anders"); |
6800c3d0 RM |
2151 | MODULE_DESCRIPTION("w83793 driver"); |
2152 | MODULE_LICENSE("GPL"); |