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Riku Voipio84f1e442007-08-24 13:03:09 +03001/*
Björn Gerhartf58c44e2011-12-13 13:19:58 -05002 * f75375s.c - driver for the Fintek F75375/SP, F75373 and
3 * F75387SG/RG hardware monitoring features
Riku Voipiob26e0ed2009-03-03 21:37:17 +02004 * Copyright (C) 2006-2007 Riku Voipio
Riku Voipio84f1e442007-08-24 13:03:09 +03005 *
6 * Datasheets available at:
7 *
8 * f75375:
Guenter Roeck4fd826e2011-12-08 09:54:18 -08009 * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf
Riku Voipio84f1e442007-08-24 13:03:09 +030010 *
11 * f75373:
Justin P. Mattock631dd1a2010-10-18 11:03:14 +020012 * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf
Riku Voipio84f1e442007-08-24 13:03:09 +030013 *
Björn Gerhartf58c44e2011-12-13 13:19:58 -050014 * f75387:
15 * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf
16 *
Riku Voipio84f1e442007-08-24 13:03:09 +030017 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 *
31 */
32
33#include <linux/module.h>
34#include <linux/jiffies.h>
35#include <linux/hwmon.h>
36#include <linux/hwmon-sysfs.h>
37#include <linux/i2c.h>
38#include <linux/err.h>
39#include <linux/mutex.h>
Riku Voipioff312d02007-09-26 13:14:40 +030040#include <linux/f75375s.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090041#include <linux/slab.h>
Riku Voipio84f1e442007-08-24 13:03:09 +030042
43/* Addresses to scan */
Mark M. Hoffman25e9c862008-02-17 22:28:03 -050044static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
Riku Voipio84f1e442007-08-24 13:03:09 +030045
Björn Gerhartf58c44e2011-12-13 13:19:58 -050046enum chips { f75373, f75375, f75387 };
Riku Voipio84f1e442007-08-24 13:03:09 +030047
48/* Fintek F75375 registers */
49#define F75375_REG_CONFIG0 0x0
50#define F75375_REG_CONFIG1 0x1
51#define F75375_REG_CONFIG2 0x2
52#define F75375_REG_CONFIG3 0x3
53#define F75375_REG_ADDR 0x4
54#define F75375_REG_INTR 0x31
55#define F75375_CHIP_ID 0x5A
56#define F75375_REG_VERSION 0x5C
57#define F75375_REG_VENDOR 0x5D
58#define F75375_REG_FAN_TIMER 0x60
59
60#define F75375_REG_VOLT(nr) (0x10 + (nr))
61#define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2)
62#define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2)
63
64#define F75375_REG_TEMP(nr) (0x14 + (nr))
Björn Gerhartf58c44e2011-12-13 13:19:58 -050065#define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr))
Riku Voipio84f1e442007-08-24 13:03:09 +030066#define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2)
67#define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2)
68
69#define F75375_REG_FAN(nr) (0x16 + (nr) * 2)
70#define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2)
71#define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10)
72#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10)
73#define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10)
74
75#define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10)
76#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
77#define F75375_REG_FAN_B_SPEED(nr, step) \
78 ((0xA5 + (nr) * 0x10) + (step) * 2)
79
80#define F75375_REG_PWM1_RAISE_DUTY 0x69
81#define F75375_REG_PWM2_RAISE_DUTY 0x6A
82#define F75375_REG_PWM1_DROP_DUTY 0x6B
83#define F75375_REG_PWM2_DROP_DUTY 0x6C
84
Björn Gerhartf58c44e2011-12-13 13:19:58 -050085#define F75375_FAN_CTRL_LINEAR(nr) (4 + nr)
86#define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4))
Guillem Jover96f36402010-09-17 17:24:11 +020087#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
Björn Gerhartf58c44e2011-12-13 13:19:58 -050088#define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4))
89#define F75387_FAN_MANU_MODE(nr) ((nr) * 4)
Riku Voipio84f1e442007-08-24 13:03:09 +030090
91/*
92 * Data structures and manipulation thereof
93 */
94
95struct f75375_data {
96 unsigned short addr;
Tony Jones1beeffe2007-08-20 13:46:20 -070097 struct device *hwmon_dev;
Riku Voipio84f1e442007-08-24 13:03:09 +030098
99 const char *name;
100 int kind;
101 struct mutex update_lock; /* protect register access */
102 char valid;
103 unsigned long last_updated; /* In jiffies */
104 unsigned long last_limits; /* In jiffies */
105
106 /* Register values */
107 u8 in[4];
108 u8 in_max[4];
109 u8 in_min[4];
110 u16 fan[2];
111 u16 fan_min[2];
Guenter Roeck740f6be32011-12-08 09:59:25 -0800112 u16 fan_max[2];
113 u16 fan_target[2];
Riku Voipio84f1e442007-08-24 13:03:09 +0300114 u8 fan_timer;
115 u8 pwm[2];
116 u8 pwm_mode[2];
117 u8 pwm_enable[2];
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500118 /*
119 * f75387: For remote temperature reading, it uses signed 11-bit
120 * values with LSB = 0.125 degree Celsius, left-justified in 16-bit
121 * registers. For original 8-bit temp readings, the LSB just is 0.
122 */
123 s16 temp11[2];
Riku Voipio84f1e442007-08-24 13:03:09 +0300124 s8 temp_high[2];
125 s8 temp_max_hyst[2];
126};
127
Jean Delvare310ec792009-12-14 21:17:23 +0100128static int f75375_detect(struct i2c_client *client,
Jean Delvare935ada82008-07-16 19:30:11 +0200129 struct i2c_board_info *info);
Jean Delvared2653e92008-04-29 23:11:39 +0200130static int f75375_probe(struct i2c_client *client,
131 const struct i2c_device_id *id);
Riku Voipio620c1422007-10-16 12:46:49 +0300132static int f75375_remove(struct i2c_client *client);
133
Jean Delvare3760f732008-04-29 23:11:40 +0200134static const struct i2c_device_id f75375_id[] = {
135 { "f75373", f75373 },
136 { "f75375", f75375 },
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500137 { "f75387", f75387 },
Jean Delvare3760f732008-04-29 23:11:40 +0200138 { }
139};
140MODULE_DEVICE_TABLE(i2c, f75375_id);
141
Riku Voipio84f1e442007-08-24 13:03:09 +0300142static struct i2c_driver f75375_driver = {
Jean Delvare935ada82008-07-16 19:30:11 +0200143 .class = I2C_CLASS_HWMON,
Riku Voipio84f1e442007-08-24 13:03:09 +0300144 .driver = {
145 .name = "f75375",
146 },
Riku Voipio620c1422007-10-16 12:46:49 +0300147 .probe = f75375_probe,
148 .remove = f75375_remove,
Jean Delvare3760f732008-04-29 23:11:40 +0200149 .id_table = f75375_id,
Jean Delvare935ada82008-07-16 19:30:11 +0200150 .detect = f75375_detect,
Jean Delvarec3813d62009-12-14 21:17:25 +0100151 .address_list = normal_i2c,
Riku Voipio84f1e442007-08-24 13:03:09 +0300152};
153
154static inline int f75375_read8(struct i2c_client *client, u8 reg)
155{
156 return i2c_smbus_read_byte_data(client, reg);
157}
158
159/* in most cases, should be called while holding update_lock */
160static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
161{
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800162 return (i2c_smbus_read_byte_data(client, reg) << 8)
163 | i2c_smbus_read_byte_data(client, reg + 1);
Riku Voipio84f1e442007-08-24 13:03:09 +0300164}
165
166static inline void f75375_write8(struct i2c_client *client, u8 reg,
167 u8 value)
168{
169 i2c_smbus_write_byte_data(client, reg, value);
170}
171
172static inline void f75375_write16(struct i2c_client *client, u8 reg,
173 u16 value)
174{
Nikolaus Schulzeb2f2552012-02-08 18:56:10 +0100175 int err = i2c_smbus_write_byte_data(client, reg, (value >> 8));
Riku Voipio84f1e442007-08-24 13:03:09 +0300176 if (err)
177 return;
178 i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
179}
180
Nikolaus Schulz331255d2012-02-28 22:15:51 +0100181static void f75375_write_pwm(struct i2c_client *client, int nr)
182{
183 struct f75375_data *data = i2c_get_clientdata(client);
184 if (data->kind == f75387)
185 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->pwm[nr]);
186 else
187 f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
188 data->pwm[nr]);
189}
190
Riku Voipio84f1e442007-08-24 13:03:09 +0300191static struct f75375_data *f75375_update_device(struct device *dev)
192{
193 struct i2c_client *client = to_i2c_client(dev);
194 struct f75375_data *data = i2c_get_clientdata(client);
195 int nr;
196
197 mutex_lock(&data->update_lock);
198
199 /* Limit registers cache is refreshed after 60 seconds */
200 if (time_after(jiffies, data->last_limits + 60 * HZ)
201 || !data->valid) {
202 for (nr = 0; nr < 2; nr++) {
203 data->temp_high[nr] =
204 f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
205 data->temp_max_hyst[nr] =
206 f75375_read8(client, F75375_REG_TEMP_HYST(nr));
Guenter Roeck740f6be32011-12-08 09:59:25 -0800207 data->fan_max[nr] =
Riku Voipio84f1e442007-08-24 13:03:09 +0300208 f75375_read16(client, F75375_REG_FAN_FULL(nr));
209 data->fan_min[nr] =
210 f75375_read16(client, F75375_REG_FAN_MIN(nr));
Guenter Roeck740f6be32011-12-08 09:59:25 -0800211 data->fan_target[nr] =
Riku Voipio84f1e442007-08-24 13:03:09 +0300212 f75375_read16(client, F75375_REG_FAN_EXP(nr));
Riku Voipio84f1e442007-08-24 13:03:09 +0300213 }
214 for (nr = 0; nr < 4; nr++) {
215 data->in_max[nr] =
216 f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
217 data->in_min[nr] =
218 f75375_read8(client, F75375_REG_VOLT_LOW(nr));
219 }
220 data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
221 data->last_limits = jiffies;
222 }
223
224 /* Measurement registers cache is refreshed after 2 second */
225 if (time_after(jiffies, data->last_updated + 2 * HZ)
226 || !data->valid) {
227 for (nr = 0; nr < 2; nr++) {
Nikolaus Schulza1c1baf2012-02-08 18:56:11 +0100228 data->pwm[nr] = f75375_read8(client,
229 F75375_REG_FAN_PWM_DUTY(nr));
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500230 /* assign MSB, therefore shift it by 8 bits */
231 data->temp11[nr] =
232 f75375_read8(client, F75375_REG_TEMP(nr)) << 8;
233 if (data->kind == f75387)
234 /* merge F75387's temperature LSB (11-bit) */
235 data->temp11[nr] |=
236 f75375_read8(client,
237 F75387_REG_TEMP11_LSB(nr));
Riku Voipio84f1e442007-08-24 13:03:09 +0300238 data->fan[nr] =
239 f75375_read16(client, F75375_REG_FAN(nr));
240 }
241 for (nr = 0; nr < 4; nr++)
242 data->in[nr] =
243 f75375_read8(client, F75375_REG_VOLT(nr));
244
245 data->last_updated = jiffies;
246 data->valid = 1;
247 }
248
249 mutex_unlock(&data->update_lock);
250 return data;
251}
252
253static inline u16 rpm_from_reg(u16 reg)
254{
255 if (reg == 0 || reg == 0xffff)
256 return 0;
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800257 return 1500000 / reg;
Riku Voipio84f1e442007-08-24 13:03:09 +0300258}
259
260static inline u16 rpm_to_reg(int rpm)
261{
262 if (rpm < 367 || rpm > 0xffff)
263 return 0xffff;
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800264 return 1500000 / rpm;
Riku Voipio84f1e442007-08-24 13:03:09 +0300265}
266
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500267static bool duty_mode_enabled(u8 pwm_enable)
268{
269 switch (pwm_enable) {
270 case 0: /* Manual, duty mode (full speed) */
271 case 1: /* Manual, duty mode */
272 case 4: /* Auto, duty mode */
273 return true;
274 case 2: /* Auto, speed mode */
275 case 3: /* Manual, speed mode */
276 return false;
277 default:
278 BUG();
Guenter Roeck63940112012-03-24 08:38:21 -0700279 return true;
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500280 }
281}
282
Nikolaus Schulz15d1ad02012-02-28 16:15:54 -0500283static bool auto_mode_enabled(u8 pwm_enable)
284{
285 switch (pwm_enable) {
286 case 0: /* Manual, duty mode (full speed) */
287 case 1: /* Manual, duty mode */
288 case 3: /* Manual, speed mode */
289 return false;
290 case 2: /* Auto, speed mode */
291 case 4: /* Auto, duty mode */
292 return true;
293 default:
294 BUG();
Guenter Roeck63940112012-03-24 08:38:21 -0700295 return false;
Nikolaus Schulz15d1ad02012-02-28 16:15:54 -0500296 }
297}
298
Riku Voipio84f1e442007-08-24 13:03:09 +0300299static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
300 const char *buf, size_t count)
301{
302 int nr = to_sensor_dev_attr(attr)->index;
303 struct i2c_client *client = to_i2c_client(dev);
304 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800305 unsigned long val;
306 int err;
307
308 err = kstrtoul(buf, 10, &val);
309 if (err < 0)
310 return err;
Riku Voipio84f1e442007-08-24 13:03:09 +0300311
312 mutex_lock(&data->update_lock);
313 data->fan_min[nr] = rpm_to_reg(val);
314 f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
315 mutex_unlock(&data->update_lock);
316 return count;
317}
318
Guenter Roeck740f6be32011-12-08 09:59:25 -0800319static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
Riku Voipio84f1e442007-08-24 13:03:09 +0300320 const char *buf, size_t count)
321{
322 int nr = to_sensor_dev_attr(attr)->index;
323 struct i2c_client *client = to_i2c_client(dev);
324 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800325 unsigned long val;
326 int err;
327
328 err = kstrtoul(buf, 10, &val);
329 if (err < 0)
330 return err;
Riku Voipio84f1e442007-08-24 13:03:09 +0300331
Nikolaus Schulz15d1ad02012-02-28 16:15:54 -0500332 if (auto_mode_enabled(data->pwm_enable[nr]))
333 return -EINVAL;
334 if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr]))
335 return -EINVAL;
336
Riku Voipio84f1e442007-08-24 13:03:09 +0300337 mutex_lock(&data->update_lock);
Guenter Roeck740f6be32011-12-08 09:59:25 -0800338 data->fan_target[nr] = rpm_to_reg(val);
339 f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
Riku Voipio84f1e442007-08-24 13:03:09 +0300340 mutex_unlock(&data->update_lock);
341 return count;
342}
343
344static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
345 const char *buf, size_t count)
346{
347 int nr = to_sensor_dev_attr(attr)->index;
348 struct i2c_client *client = to_i2c_client(dev);
349 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800350 unsigned long val;
351 int err;
352
353 err = kstrtoul(buf, 10, &val);
354 if (err < 0)
355 return err;
Riku Voipio84f1e442007-08-24 13:03:09 +0300356
Nikolaus Schulz15d1ad02012-02-28 16:15:54 -0500357 if (auto_mode_enabled(data->pwm_enable[nr]) ||
358 !duty_mode_enabled(data->pwm_enable[nr]))
359 return -EINVAL;
360
Riku Voipio84f1e442007-08-24 13:03:09 +0300361 mutex_lock(&data->update_lock);
Guenter Roeck2a844c12013-01-09 08:09:34 -0800362 data->pwm[nr] = clamp_val(val, 0, 255);
Nikolaus Schulz331255d2012-02-28 22:15:51 +0100363 f75375_write_pwm(client, nr);
Riku Voipio84f1e442007-08-24 13:03:09 +0300364 mutex_unlock(&data->update_lock);
365 return count;
366}
367
368static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
369 *attr, char *buf)
370{
371 int nr = to_sensor_dev_attr(attr)->index;
372 struct f75375_data *data = f75375_update_device(dev);
373 return sprintf(buf, "%d\n", data->pwm_enable[nr]);
374}
375
Riku Voipioff312d02007-09-26 13:14:40 +0300376static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
Riku Voipio84f1e442007-08-24 13:03:09 +0300377{
Riku Voipio84f1e442007-08-24 13:03:09 +0300378 struct f75375_data *data = i2c_get_clientdata(client);
Riku Voipio84f1e442007-08-24 13:03:09 +0300379 u8 fanmode;
380
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500381 if (val < 0 || val > 4)
Riku Voipio84f1e442007-08-24 13:03:09 +0300382 return -EINVAL;
383
Riku Voipio84f1e442007-08-24 13:03:09 +0300384 fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500385 if (data->kind == f75387) {
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500386 /* For now, deny dangerous toggling of duty mode */
387 if (duty_mode_enabled(data->pwm_enable[nr]) !=
388 duty_mode_enabled(val))
389 return -EOPNOTSUPP;
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500390 /* clear each fanX_mode bit before setting them properly */
391 fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr));
392 fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr));
393 switch (val) {
394 case 0: /* full speed */
395 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
396 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
397 data->pwm[nr] = 255;
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500398 break;
399 case 1: /* PWM */
400 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
401 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
402 break;
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500403 case 2: /* Automatic, speed mode */
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500404 break;
405 case 3: /* fan speed */
406 fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
407 break;
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500408 case 4: /* Automatic, pwm */
409 fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
410 break;
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500411 }
412 } else {
413 /* clear each fanX_mode bit before setting them properly */
414 fanmode &= ~(3 << FAN_CTRL_MODE(nr));
415 switch (val) {
416 case 0: /* full speed */
417 fanmode |= (3 << FAN_CTRL_MODE(nr));
418 data->pwm[nr] = 255;
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500419 break;
420 case 1: /* PWM */
421 fanmode |= (3 << FAN_CTRL_MODE(nr));
422 break;
423 case 2: /* AUTOMATIC*/
Nikolaus Schulz09e87e52012-02-08 18:56:08 +0100424 fanmode |= (1 << FAN_CTRL_MODE(nr));
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500425 break;
426 case 3: /* fan speed */
427 break;
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500428 case 4: /* Automatic pwm */
429 return -EINVAL;
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500430 }
Riku Voipio84f1e442007-08-24 13:03:09 +0300431 }
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500432
Riku Voipio84f1e442007-08-24 13:03:09 +0300433 f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
434 data->pwm_enable[nr] = val;
Nikolaus Schulzc1c1a3d2012-02-22 23:18:44 +0100435 if (val == 0)
Nikolaus Schulz331255d2012-02-28 22:15:51 +0100436 f75375_write_pwm(client, nr);
Riku Voipioff312d02007-09-26 13:14:40 +0300437 return 0;
438}
439
440static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
441 const char *buf, size_t count)
442{
443 int nr = to_sensor_dev_attr(attr)->index;
444 struct i2c_client *client = to_i2c_client(dev);
445 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800446 unsigned long val;
447 int err;
448
449 err = kstrtoul(buf, 10, &val);
450 if (err < 0)
451 return err;
Riku Voipioff312d02007-09-26 13:14:40 +0300452
453 mutex_lock(&data->update_lock);
454 err = set_pwm_enable_direct(client, nr, val);
Riku Voipio84f1e442007-08-24 13:03:09 +0300455 mutex_unlock(&data->update_lock);
Riku Voipioff312d02007-09-26 13:14:40 +0300456 return err ? err : count;
Riku Voipio84f1e442007-08-24 13:03:09 +0300457}
458
459static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
460 const char *buf, size_t count)
461{
462 int nr = to_sensor_dev_attr(attr)->index;
463 struct i2c_client *client = to_i2c_client(dev);
464 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800465 unsigned long val;
466 int err;
467 u8 conf;
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500468 char reg, ctrl;
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800469
470 err = kstrtoul(buf, 10, &val);
471 if (err < 0)
472 return err;
Riku Voipio84f1e442007-08-24 13:03:09 +0300473
Riku Voipio76e83be2007-10-26 14:14:23 +0300474 if (!(val == 0 || val == 1))
Riku Voipio84f1e442007-08-24 13:03:09 +0300475 return -EINVAL;
476
Guenter Roeck5cd32222011-12-08 10:55:16 -0800477 /* F75373 does not support DC (linear voltage) fan control mode */
478 if (data->kind == f75373 && val == 0)
479 return -EINVAL;
480
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500481 /* take care for different registers */
482 if (data->kind == f75387) {
483 reg = F75375_REG_FAN_TIMER;
484 ctrl = F75387_FAN_CTRL_LINEAR(nr);
485 } else {
486 reg = F75375_REG_CONFIG1;
487 ctrl = F75375_FAN_CTRL_LINEAR(nr);
488 }
489
Riku Voipio84f1e442007-08-24 13:03:09 +0300490 mutex_lock(&data->update_lock);
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500491 conf = f75375_read8(client, reg);
492 conf &= ~(1 << ctrl);
Riku Voipio84f1e442007-08-24 13:03:09 +0300493
494 if (val == 0)
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500495 conf |= (1 << ctrl);
Riku Voipio84f1e442007-08-24 13:03:09 +0300496
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500497 f75375_write8(client, reg, conf);
Riku Voipio84f1e442007-08-24 13:03:09 +0300498 data->pwm_mode[nr] = val;
499 mutex_unlock(&data->update_lock);
500 return count;
501}
502
503static ssize_t show_pwm(struct device *dev, struct device_attribute
504 *attr, char *buf)
505{
506 int nr = to_sensor_dev_attr(attr)->index;
507 struct f75375_data *data = f75375_update_device(dev);
508 return sprintf(buf, "%d\n", data->pwm[nr]);
509}
510
511static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
512 *attr, char *buf)
513{
514 int nr = to_sensor_dev_attr(attr)->index;
515 struct f75375_data *data = f75375_update_device(dev);
516 return sprintf(buf, "%d\n", data->pwm_mode[nr]);
517}
518
519#define VOLT_FROM_REG(val) ((val) * 8)
520#define VOLT_TO_REG(val) ((val) / 8)
521
522static ssize_t show_in(struct device *dev, struct device_attribute *attr,
523 char *buf)
524{
525 int nr = to_sensor_dev_attr(attr)->index;
526 struct f75375_data *data = f75375_update_device(dev);
527 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
528}
529
530static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
531 char *buf)
532{
533 int nr = to_sensor_dev_attr(attr)->index;
534 struct f75375_data *data = f75375_update_device(dev);
535 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
536}
537
538static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
539 char *buf)
540{
541 int nr = to_sensor_dev_attr(attr)->index;
542 struct f75375_data *data = f75375_update_device(dev);
543 return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
544}
545
546static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
547 const char *buf, size_t count)
548{
549 int nr = to_sensor_dev_attr(attr)->index;
550 struct i2c_client *client = to_i2c_client(dev);
551 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800552 unsigned long val;
553 int err;
554
555 err = kstrtoul(buf, 10, &val);
556 if (err < 0)
557 return err;
558
Guenter Roeck2a844c12013-01-09 08:09:34 -0800559 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
Riku Voipio84f1e442007-08-24 13:03:09 +0300560 mutex_lock(&data->update_lock);
561 data->in_max[nr] = val;
562 f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
563 mutex_unlock(&data->update_lock);
564 return count;
565}
566
567static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
568 const char *buf, size_t count)
569{
570 int nr = to_sensor_dev_attr(attr)->index;
571 struct i2c_client *client = to_i2c_client(dev);
572 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800573 unsigned long val;
574 int err;
575
576 err = kstrtoul(buf, 10, &val);
577 if (err < 0)
578 return err;
579
Guenter Roeck2a844c12013-01-09 08:09:34 -0800580 val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
Riku Voipio84f1e442007-08-24 13:03:09 +0300581 mutex_lock(&data->update_lock);
582 data->in_min[nr] = val;
583 f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
584 mutex_unlock(&data->update_lock);
585 return count;
586}
587#define TEMP_FROM_REG(val) ((val) * 1000)
588#define TEMP_TO_REG(val) ((val) / 1000)
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500589#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
Riku Voipio84f1e442007-08-24 13:03:09 +0300590
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500591static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
Riku Voipio84f1e442007-08-24 13:03:09 +0300592 char *buf)
593{
594 int nr = to_sensor_dev_attr(attr)->index;
595 struct f75375_data *data = f75375_update_device(dev);
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500596 return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
Riku Voipio84f1e442007-08-24 13:03:09 +0300597}
598
599static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
600 char *buf)
601{
602 int nr = to_sensor_dev_attr(attr)->index;
603 struct f75375_data *data = f75375_update_device(dev);
604 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
605}
606
607static ssize_t show_temp_max_hyst(struct device *dev,
608 struct device_attribute *attr, char *buf)
609{
610 int nr = to_sensor_dev_attr(attr)->index;
611 struct f75375_data *data = f75375_update_device(dev);
612 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
613}
614
615static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
616 const char *buf, size_t count)
617{
618 int nr = to_sensor_dev_attr(attr)->index;
619 struct i2c_client *client = to_i2c_client(dev);
620 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800621 unsigned long val;
622 int err;
623
624 err = kstrtoul(buf, 10, &val);
625 if (err < 0)
626 return err;
627
Guenter Roeck2a844c12013-01-09 08:09:34 -0800628 val = clamp_val(TEMP_TO_REG(val), 0, 127);
Riku Voipio84f1e442007-08-24 13:03:09 +0300629 mutex_lock(&data->update_lock);
630 data->temp_high[nr] = val;
631 f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
632 mutex_unlock(&data->update_lock);
633 return count;
634}
635
636static ssize_t set_temp_max_hyst(struct device *dev,
637 struct device_attribute *attr, const char *buf, size_t count)
638{
639 int nr = to_sensor_dev_attr(attr)->index;
640 struct i2c_client *client = to_i2c_client(dev);
641 struct f75375_data *data = i2c_get_clientdata(client);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800642 unsigned long val;
643 int err;
644
645 err = kstrtoul(buf, 10, &val);
646 if (err < 0)
647 return err;
648
Guenter Roeck2a844c12013-01-09 08:09:34 -0800649 val = clamp_val(TEMP_TO_REG(val), 0, 127);
Riku Voipio84f1e442007-08-24 13:03:09 +0300650 mutex_lock(&data->update_lock);
651 data->temp_max_hyst[nr] = val;
652 f75375_write8(client, F75375_REG_TEMP_HYST(nr),
653 data->temp_max_hyst[nr]);
654 mutex_unlock(&data->update_lock);
655 return count;
656}
657
658#define show_fan(thing) \
659static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
660 char *buf)\
661{\
662 int nr = to_sensor_dev_attr(attr)->index;\
663 struct f75375_data *data = f75375_update_device(dev); \
664 return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
665}
666
667show_fan(fan);
668show_fan(fan_min);
Guenter Roeck740f6be32011-12-08 09:59:25 -0800669show_fan(fan_max);
670show_fan(fan_target);
Riku Voipio84f1e442007-08-24 13:03:09 +0300671
672static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
673static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
674 show_in_max, set_in_max, 0);
675static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
676 show_in_min, set_in_min, 0);
677static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
678static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
679 show_in_max, set_in_max, 1);
680static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
681 show_in_min, set_in_min, 1);
682static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
683static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
684 show_in_max, set_in_max, 2);
685static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
686 show_in_min, set_in_min, 2);
687static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
688static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
689 show_in_max, set_in_max, 3);
690static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
691 show_in_min, set_in_min, 3);
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500692static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
Riku Voipio84f1e442007-08-24 13:03:09 +0300693static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
694 show_temp_max_hyst, set_temp_max_hyst, 0);
695static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
696 show_temp_max, set_temp_max, 0);
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500697static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
Riku Voipio84f1e442007-08-24 13:03:09 +0300698static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
699 show_temp_max_hyst, set_temp_max_hyst, 1);
700static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
701 show_temp_max, set_temp_max, 1);
702static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
Guenter Roeck740f6be32011-12-08 09:59:25 -0800703static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
Riku Voipio84f1e442007-08-24 13:03:09 +0300704static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
705 show_fan_min, set_fan_min, 0);
Guenter Roeck740f6be32011-12-08 09:59:25 -0800706static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
707 show_fan_target, set_fan_target, 0);
Riku Voipio84f1e442007-08-24 13:03:09 +0300708static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
Guenter Roeck740f6be32011-12-08 09:59:25 -0800709static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
Riku Voipio84f1e442007-08-24 13:03:09 +0300710static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
711 show_fan_min, set_fan_min, 1);
Guenter Roeck740f6be32011-12-08 09:59:25 -0800712static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
713 show_fan_target, set_fan_target, 1);
Riku Voipio84f1e442007-08-24 13:03:09 +0300714static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
715 show_pwm, set_pwm, 0);
716static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
717 show_pwm_enable, set_pwm_enable, 0);
Riku Voipio76e83be2007-10-26 14:14:23 +0300718static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
Riku Voipio84f1e442007-08-24 13:03:09 +0300719 show_pwm_mode, set_pwm_mode, 0);
720static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
721 show_pwm, set_pwm, 1);
722static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
723 show_pwm_enable, set_pwm_enable, 1);
Riku Voipio76e83be2007-10-26 14:14:23 +0300724static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
Riku Voipio84f1e442007-08-24 13:03:09 +0300725 show_pwm_mode, set_pwm_mode, 1);
726
727static struct attribute *f75375_attributes[] = {
728 &sensor_dev_attr_temp1_input.dev_attr.attr,
729 &sensor_dev_attr_temp1_max.dev_attr.attr,
730 &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
731 &sensor_dev_attr_temp2_input.dev_attr.attr,
732 &sensor_dev_attr_temp2_max.dev_attr.attr,
733 &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
734 &sensor_dev_attr_fan1_input.dev_attr.attr,
Guenter Roeck740f6be32011-12-08 09:59:25 -0800735 &sensor_dev_attr_fan1_max.dev_attr.attr,
Riku Voipio84f1e442007-08-24 13:03:09 +0300736 &sensor_dev_attr_fan1_min.dev_attr.attr,
Guenter Roeck740f6be32011-12-08 09:59:25 -0800737 &sensor_dev_attr_fan1_target.dev_attr.attr,
Riku Voipio84f1e442007-08-24 13:03:09 +0300738 &sensor_dev_attr_fan2_input.dev_attr.attr,
Guenter Roeck740f6be32011-12-08 09:59:25 -0800739 &sensor_dev_attr_fan2_max.dev_attr.attr,
Riku Voipio84f1e442007-08-24 13:03:09 +0300740 &sensor_dev_attr_fan2_min.dev_attr.attr,
Guenter Roeck740f6be32011-12-08 09:59:25 -0800741 &sensor_dev_attr_fan2_target.dev_attr.attr,
Riku Voipio84f1e442007-08-24 13:03:09 +0300742 &sensor_dev_attr_pwm1.dev_attr.attr,
743 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
744 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
745 &sensor_dev_attr_pwm2.dev_attr.attr,
746 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
747 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
748 &sensor_dev_attr_in0_input.dev_attr.attr,
749 &sensor_dev_attr_in0_max.dev_attr.attr,
750 &sensor_dev_attr_in0_min.dev_attr.attr,
751 &sensor_dev_attr_in1_input.dev_attr.attr,
752 &sensor_dev_attr_in1_max.dev_attr.attr,
753 &sensor_dev_attr_in1_min.dev_attr.attr,
754 &sensor_dev_attr_in2_input.dev_attr.attr,
755 &sensor_dev_attr_in2_max.dev_attr.attr,
756 &sensor_dev_attr_in2_min.dev_attr.attr,
757 &sensor_dev_attr_in3_input.dev_attr.attr,
758 &sensor_dev_attr_in3_max.dev_attr.attr,
759 &sensor_dev_attr_in3_min.dev_attr.attr,
760 NULL
761};
762
763static const struct attribute_group f75375_group = {
764 .attrs = f75375_attributes,
765};
766
Riku Voipioff312d02007-09-26 13:14:40 +0300767static void f75375_init(struct i2c_client *client, struct f75375_data *data,
768 struct f75375s_platform_data *f75375s_pdata)
769{
770 int nr;
Guenter Roeckb1b561a2011-12-08 10:15:51 -0800771
772 if (!f75375s_pdata) {
773 u8 conf, mode;
774 int nr;
775
776 conf = f75375_read8(client, F75375_REG_CONFIG1);
777 mode = f75375_read8(client, F75375_REG_FAN_TIMER);
778 for (nr = 0; nr < 2; nr++) {
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500779 if (data->kind == f75387) {
780 bool manu, duty;
781
Nikolaus Schulza367a1e2012-02-08 18:56:09 +0100782 if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500783 data->pwm_mode[nr] = 1;
784
785 manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1);
786 duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1);
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500787 if (!manu && duty)
788 /* auto, pwm */
789 data->pwm_enable[nr] = 4;
790 else if (manu && !duty)
791 /* manual, speed */
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500792 data->pwm_enable[nr] = 3;
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500793 else if (!manu && !duty)
794 /* automatic, speed */
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500795 data->pwm_enable[nr] = 2;
796 else
Nikolaus Schulzb17d6562012-02-28 16:15:53 -0500797 /* manual, pwm */
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500798 data->pwm_enable[nr] = 1;
799 } else {
800 if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr))))
801 data->pwm_mode[nr] = 1;
802
803 switch ((mode >> FAN_CTRL_MODE(nr)) & 3) {
804 case 0: /* speed */
805 data->pwm_enable[nr] = 3;
806 break;
807 case 1: /* automatic */
808 data->pwm_enable[nr] = 2;
809 break;
810 default: /* manual */
811 data->pwm_enable[nr] = 1;
812 break;
813 }
Guenter Roeckb1b561a2011-12-08 10:15:51 -0800814 }
815 }
816 return;
817 }
818
Riku Voipioff312d02007-09-26 13:14:40 +0300819 set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
820 set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
821 for (nr = 0; nr < 2; nr++) {
Nikolaus Schulz15d1ad02012-02-28 16:15:54 -0500822 if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
823 !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
824 continue;
Guenter Roeck2a844c12013-01-09 08:09:34 -0800825 data->pwm[nr] = clamp_val(f75375s_pdata->pwm[nr], 0, 255);
Nikolaus Schulz331255d2012-02-28 22:15:51 +0100826 f75375_write_pwm(client, nr);
Riku Voipioff312d02007-09-26 13:14:40 +0300827 }
828
829}
830
Jean Delvared2653e92008-04-29 23:11:39 +0200831static int f75375_probe(struct i2c_client *client,
832 const struct i2c_device_id *id)
Riku Voipio620c1422007-10-16 12:46:49 +0300833{
Andrew Klossner51b3e272009-03-12 13:36:39 +0100834 struct f75375_data *data;
Jingoo Hana8b3a3a2013-07-30 17:13:06 +0900835 struct f75375s_platform_data *f75375s_pdata =
836 dev_get_platdata(&client->dev);
Riku Voipio620c1422007-10-16 12:46:49 +0300837 int err;
838
839 if (!i2c_check_functionality(client->adapter,
840 I2C_FUNC_SMBUS_BYTE_DATA))
841 return -EIO;
Guenter Roeck05639bc2012-06-02 09:58:05 -0700842 data = devm_kzalloc(&client->dev, sizeof(struct f75375_data),
843 GFP_KERNEL);
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800844 if (!data)
Riku Voipio620c1422007-10-16 12:46:49 +0300845 return -ENOMEM;
846
847 i2c_set_clientdata(client, data);
Riku Voipio620c1422007-10-16 12:46:49 +0300848 mutex_init(&data->update_lock);
Jean Delvare3760f732008-04-29 23:11:40 +0200849 data->kind = id->driver_data;
Riku Voipio620c1422007-10-16 12:46:49 +0300850
Guenter Roeck4fd826e2011-12-08 09:54:18 -0800851 err = sysfs_create_group(&client->dev.kobj, &f75375_group);
852 if (err)
Guenter Roeck05639bc2012-06-02 09:58:05 -0700853 return err;
Riku Voipio620c1422007-10-16 12:46:49 +0300854
Nikolaus Schulzedeea102012-02-28 22:15:52 +0100855 if (data->kind != f75373) {
Riku Voipio76e83be2007-10-26 14:14:23 +0300856 err = sysfs_chmod_file(&client->dev.kobj,
857 &sensor_dev_attr_pwm1_mode.dev_attr.attr,
858 S_IRUGO | S_IWUSR);
859 if (err)
860 goto exit_remove;
861 err = sysfs_chmod_file(&client->dev.kobj,
862 &sensor_dev_attr_pwm2_mode.dev_attr.attr,
863 S_IRUGO | S_IWUSR);
864 if (err)
865 goto exit_remove;
866 }
867
Riku Voipio620c1422007-10-16 12:46:49 +0300868 data->hwmon_dev = hwmon_device_register(&client->dev);
869 if (IS_ERR(data->hwmon_dev)) {
870 err = PTR_ERR(data->hwmon_dev);
871 goto exit_remove;
872 }
873
Guenter Roeckb1b561a2011-12-08 10:15:51 -0800874 f75375_init(client, data, f75375s_pdata);
Riku Voipioff312d02007-09-26 13:14:40 +0300875
Riku Voipio620c1422007-10-16 12:46:49 +0300876 return 0;
877
878exit_remove:
879 sysfs_remove_group(&client->dev.kobj, &f75375_group);
Riku Voipio620c1422007-10-16 12:46:49 +0300880 return err;
881}
882
883static int f75375_remove(struct i2c_client *client)
884{
885 struct f75375_data *data = i2c_get_clientdata(client);
886 hwmon_device_unregister(data->hwmon_dev);
887 sysfs_remove_group(&client->dev.kobj, &f75375_group);
Riku Voipio84f1e442007-08-24 13:03:09 +0300888 return 0;
889}
890
Jean Delvare935ada82008-07-16 19:30:11 +0200891/* Return 0 if detection is successful, -ENODEV otherwise */
Jean Delvare310ec792009-12-14 21:17:23 +0100892static int f75375_detect(struct i2c_client *client,
Jean Delvare935ada82008-07-16 19:30:11 +0200893 struct i2c_board_info *info)
Riku Voipio84f1e442007-08-24 13:03:09 +0300894{
Jean Delvare935ada82008-07-16 19:30:11 +0200895 struct i2c_adapter *adapter = client->adapter;
Jean Delvare52df6442009-12-09 20:35:57 +0100896 u16 vendid, chipid;
897 u8 version;
898 const char *name;
Riku Voipio84f1e442007-08-24 13:03:09 +0300899
Jean Delvare52df6442009-12-09 20:35:57 +0100900 vendid = f75375_read16(client, F75375_REG_VENDOR);
901 chipid = f75375_read16(client, F75375_CHIP_ID);
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500902 if (vendid != 0x1934)
903 return -ENODEV;
904
905 if (chipid == 0x0306)
Riku Voipio84f1e442007-08-24 13:03:09 +0300906 name = "f75375";
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500907 else if (chipid == 0x0204)
Riku Voipio84f1e442007-08-24 13:03:09 +0300908 name = "f75373";
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500909 else if (chipid == 0x0410)
910 name = "f75387";
Jean Delvare52df6442009-12-09 20:35:57 +0100911 else
912 return -ENODEV;
913
914 version = f75375_read8(client, F75375_REG_VERSION);
Riku Voipio84f1e442007-08-24 13:03:09 +0300915 dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
Jean Delvare935ada82008-07-16 19:30:11 +0200916 strlcpy(info->type, name, I2C_NAME_SIZE);
Riku Voipio84f1e442007-08-24 13:03:09 +0300917
Riku Voipio84f1e442007-08-24 13:03:09 +0300918 return 0;
Riku Voipio84f1e442007-08-24 13:03:09 +0300919}
920
Axel Linf0967ee2012-01-20 15:38:18 +0800921module_i2c_driver(f75375_driver);
Riku Voipio84f1e442007-08-24 13:03:09 +0300922
Riku Voipiob26e0ed2009-03-03 21:37:17 +0200923MODULE_AUTHOR("Riku Voipio");
Riku Voipio84f1e442007-08-24 13:03:09 +0300924MODULE_LICENSE("GPL");
Björn Gerhartf58c44e2011-12-13 13:19:58 -0500925MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");