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6f9703d0 DW |
1 | /* |
2 | * A hwmon driver for the Analog Devices ADT7470 | |
3 | * Copyright (C) 2007 IBM | |
4 | * | |
5407e051 | 5 | * Author: Darrick J. Wong <darrick.wong@oracle.com> |
6f9703d0 DW |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
2e991201 JP |
22 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
23 | ||
6f9703d0 DW |
24 | #include <linux/module.h> |
25 | #include <linux/jiffies.h> | |
26 | #include <linux/i2c.h> | |
27 | #include <linux/hwmon.h> | |
28 | #include <linux/hwmon-sysfs.h> | |
29 | #include <linux/err.h> | |
30 | #include <linux/mutex.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/log2.h> | |
89fac11c | 33 | #include <linux/kthread.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
aa18cc91 | 35 | #include <linux/util_macros.h> |
6f9703d0 DW |
36 | |
37 | /* Addresses to scan */ | |
25e9c86d | 38 | static const unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END }; |
6f9703d0 | 39 | |
6f9703d0 DW |
40 | /* ADT7470 registers */ |
41 | #define ADT7470_REG_BASE_ADDR 0x20 | |
42 | #define ADT7470_REG_TEMP_BASE_ADDR 0x20 | |
43 | #define ADT7470_REG_TEMP_MAX_ADDR 0x29 | |
44 | #define ADT7470_REG_FAN_BASE_ADDR 0x2A | |
45 | #define ADT7470_REG_FAN_MAX_ADDR 0x31 | |
46 | #define ADT7470_REG_PWM_BASE_ADDR 0x32 | |
47 | #define ADT7470_REG_PWM_MAX_ADDR 0x35 | |
48 | #define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38 | |
49 | #define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B | |
50 | #define ADT7470_REG_CFG 0x40 | |
51 | #define ADT7470_FSPD_MASK 0x04 | |
52 | #define ADT7470_REG_ALARM1 0x41 | |
fe03f28c DW |
53 | #define ADT7470_R1T_ALARM 0x01 |
54 | #define ADT7470_R2T_ALARM 0x02 | |
55 | #define ADT7470_R3T_ALARM 0x04 | |
56 | #define ADT7470_R4T_ALARM 0x08 | |
57 | #define ADT7470_R5T_ALARM 0x10 | |
58 | #define ADT7470_R6T_ALARM 0x20 | |
59 | #define ADT7470_R7T_ALARM 0x40 | |
60 | #define ADT7470_OOL_ALARM 0x80 | |
6f9703d0 | 61 | #define ADT7470_REG_ALARM2 0x42 |
fe03f28c DW |
62 | #define ADT7470_R8T_ALARM 0x01 |
63 | #define ADT7470_R9T_ALARM 0x02 | |
64 | #define ADT7470_R10T_ALARM 0x04 | |
65 | #define ADT7470_FAN1_ALARM 0x10 | |
66 | #define ADT7470_FAN2_ALARM 0x20 | |
67 | #define ADT7470_FAN3_ALARM 0x40 | |
68 | #define ADT7470_FAN4_ALARM 0x80 | |
6f9703d0 DW |
69 | #define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44 |
70 | #define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57 | |
71 | #define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58 | |
72 | #define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F | |
73 | #define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60 | |
74 | #define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67 | |
75 | #define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68 | |
76 | #define ADT7470_REG_PWM12_CFG 0x68 | |
77 | #define ADT7470_PWM2_AUTO_MASK 0x40 | |
78 | #define ADT7470_PWM1_AUTO_MASK 0x80 | |
2e75a4b7 | 79 | #define ADT7470_PWM_AUTO_MASK 0xC0 |
6f9703d0 DW |
80 | #define ADT7470_REG_PWM34_CFG 0x69 |
81 | #define ADT7470_PWM3_AUTO_MASK 0x40 | |
82 | #define ADT7470_PWM4_AUTO_MASK 0x80 | |
83 | #define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A | |
84 | #define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D | |
85 | #define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E | |
86 | #define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71 | |
aa18cc91 | 87 | #define ADT7470_REG_CFG_2 0x74 |
6f9703d0 DW |
88 | #define ADT7470_REG_ACOUSTICS12 0x75 |
89 | #define ADT7470_REG_ACOUSTICS34 0x76 | |
90 | #define ADT7470_REG_DEVICE 0x3D | |
91 | #define ADT7470_REG_VENDOR 0x3E | |
92 | #define ADT7470_REG_REVISION 0x3F | |
93 | #define ADT7470_REG_ALARM1_MASK 0x72 | |
94 | #define ADT7470_REG_ALARM2_MASK 0x73 | |
95 | #define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C | |
96 | #define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D | |
97 | #define ADT7470_REG_MAX_ADDR 0x81 | |
98 | ||
99 | #define ADT7470_TEMP_COUNT 10 | |
100 | #define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x)) | |
101 | #define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2)) | |
102 | #define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \ | |
103 | ((x) * 2) + 1) | |
104 | ||
105 | #define ADT7470_FAN_COUNT 4 | |
106 | #define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2)) | |
107 | #define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2)) | |
108 | #define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2)) | |
109 | ||
110 | #define ADT7470_PWM_COUNT 4 | |
111 | #define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x)) | |
112 | #define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x)) | |
113 | #define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x)) | |
114 | #define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x)) | |
115 | #define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2)) | |
116 | #define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \ | |
117 | ((x) / 2)) | |
118 | ||
fe03f28c DW |
119 | #define ALARM2(x) ((x) << 8) |
120 | ||
6f9703d0 DW |
121 | #define ADT7470_VENDOR 0x41 |
122 | #define ADT7470_DEVICE 0x70 | |
123 | /* datasheet only mentions a revision 2 */ | |
124 | #define ADT7470_REVISION 0x02 | |
125 | ||
126 | /* "all temps" according to hwmon sysfs interface spec */ | |
127 | #define ADT7470_PWM_ALL_TEMPS 0x3FF | |
128 | ||
129 | /* How often do we reread sensors values? (In jiffies) */ | |
130 | #define SENSOR_REFRESH_INTERVAL (5 * HZ) | |
131 | ||
132 | /* How often do we reread sensor limit values? (In jiffies) */ | |
133 | #define LIMIT_REFRESH_INTERVAL (60 * HZ) | |
134 | ||
2f22d5df DW |
135 | /* Wait at least 200ms per sensor for 10 sensors */ |
136 | #define TEMP_COLLECTION_TIME 2000 | |
6f9703d0 | 137 | |
89fac11c DW |
138 | /* auto update thing won't fire more than every 2s */ |
139 | #define AUTO_UPDATE_INTERVAL 2000 | |
140 | ||
6f9703d0 DW |
141 | /* datasheet says to divide this number by the fan reading to get fan rpm */ |
142 | #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x)) | |
143 | #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM | |
144 | #define FAN_PERIOD_INVALID 65535 | |
145 | #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID) | |
146 | ||
aa18cc91 JS |
147 | /* Config registers 1 and 2 include fields for selecting the PWM frequency */ |
148 | #define ADT7470_CFG_LF 0x40 | |
149 | #define ADT7470_FREQ_MASK 0x70 | |
150 | #define ADT7470_FREQ_SHIFT 4 | |
151 | ||
6f9703d0 | 152 | struct adt7470_data { |
30485776 | 153 | struct i2c_client *client; |
6f9703d0 DW |
154 | struct mutex lock; |
155 | char sensors_valid; | |
156 | char limits_valid; | |
157 | unsigned long sensors_last_updated; /* In jiffies */ | |
158 | unsigned long limits_last_updated; /* In jiffies */ | |
159 | ||
2f22d5df | 160 | int num_temp_sensors; /* -1 = probe */ |
89fac11c | 161 | int temperatures_probed; |
2f22d5df | 162 | |
6f9703d0 DW |
163 | s8 temp[ADT7470_TEMP_COUNT]; |
164 | s8 temp_min[ADT7470_TEMP_COUNT]; | |
165 | s8 temp_max[ADT7470_TEMP_COUNT]; | |
166 | u16 fan[ADT7470_FAN_COUNT]; | |
167 | u16 fan_min[ADT7470_FAN_COUNT]; | |
168 | u16 fan_max[ADT7470_FAN_COUNT]; | |
fe03f28c DW |
169 | u16 alarm; |
170 | u16 alarms_mask; | |
6f9703d0 DW |
171 | u8 force_pwm_max; |
172 | u8 pwm[ADT7470_PWM_COUNT]; | |
173 | u8 pwm_max[ADT7470_PWM_COUNT]; | |
174 | u8 pwm_automatic[ADT7470_PWM_COUNT]; | |
175 | u8 pwm_min[ADT7470_PWM_COUNT]; | |
176 | s8 pwm_tmin[ADT7470_PWM_COUNT]; | |
177 | u8 pwm_auto_temp[ADT7470_PWM_COUNT]; | |
89fac11c DW |
178 | |
179 | struct task_struct *auto_update; | |
89fac11c | 180 | unsigned int auto_update_interval; |
6f9703d0 DW |
181 | }; |
182 | ||
6f9703d0 DW |
183 | /* |
184 | * 16-bit registers on the ADT7470 are low-byte first. The data sheet says | |
185 | * that the low byte must be read before the high byte. | |
186 | */ | |
187 | static inline int adt7470_read_word_data(struct i2c_client *client, u8 reg) | |
188 | { | |
189 | u16 foo; | |
190 | foo = i2c_smbus_read_byte_data(client, reg); | |
191 | foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8); | |
192 | return foo; | |
193 | } | |
194 | ||
195 | static inline int adt7470_write_word_data(struct i2c_client *client, u8 reg, | |
196 | u16 value) | |
197 | { | |
198 | return i2c_smbus_write_byte_data(client, reg, value & 0xFF) | |
93d783bc | 199 | || i2c_smbus_write_byte_data(client, reg + 1, value >> 8); |
6f9703d0 DW |
200 | } |
201 | ||
89fac11c DW |
202 | /* Probe for temperature sensors. Assumes lock is held */ |
203 | static int adt7470_read_temperatures(struct i2c_client *client, | |
204 | struct adt7470_data *data) | |
6f9703d0 | 205 | { |
89fac11c | 206 | unsigned long res; |
6f9703d0 | 207 | int i; |
89fac11c | 208 | u8 cfg, pwm[4], pwm_cfg[2]; |
6f9703d0 | 209 | |
2e75a4b7 DW |
210 | /* save pwm[1-4] config register */ |
211 | pwm_cfg[0] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(0)); | |
212 | pwm_cfg[1] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM_CFG(2)); | |
213 | ||
214 | /* set manual pwm to whatever it is set to now */ | |
215 | for (i = 0; i < ADT7470_FAN_COUNT; i++) | |
216 | pwm[i] = i2c_smbus_read_byte_data(client, ADT7470_REG_PWM(i)); | |
217 | ||
218 | /* put pwm in manual mode */ | |
219 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0), | |
220 | pwm_cfg[0] & ~(ADT7470_PWM_AUTO_MASK)); | |
221 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2), | |
222 | pwm_cfg[1] & ~(ADT7470_PWM_AUTO_MASK)); | |
223 | ||
224 | /* write pwm control to whatever it was */ | |
225 | for (i = 0; i < ADT7470_FAN_COUNT; i++) | |
226 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(i), pwm[i]); | |
227 | ||
6f9703d0 DW |
228 | /* start reading temperature sensors */ |
229 | cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
230 | cfg |= 0x80; | |
231 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg); | |
232 | ||
2f22d5df | 233 | /* Delay is 200ms * number of temp sensors. */ |
89fac11c DW |
234 | res = msleep_interruptible((data->num_temp_sensors >= 0 ? |
235 | data->num_temp_sensors * 200 : | |
236 | TEMP_COLLECTION_TIME)); | |
6f9703d0 DW |
237 | |
238 | /* done reading temperature sensors */ | |
239 | cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
240 | cfg &= ~0x80; | |
241 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg); | |
242 | ||
2e75a4b7 DW |
243 | /* restore pwm[1-4] config registers */ |
244 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(0), pwm_cfg[0]); | |
245 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_CFG(2), pwm_cfg[1]); | |
246 | ||
89fac11c | 247 | if (res) { |
2e991201 | 248 | pr_err("ha ha, interrupted\n"); |
89fac11c DW |
249 | return -EAGAIN; |
250 | } | |
251 | ||
252 | /* Only count fans if we have to */ | |
253 | if (data->num_temp_sensors >= 0) | |
254 | return 0; | |
255 | ||
256 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) { | |
6f9703d0 DW |
257 | data->temp[i] = i2c_smbus_read_byte_data(client, |
258 | ADT7470_TEMP_REG(i)); | |
89fac11c DW |
259 | if (data->temp[i]) |
260 | data->num_temp_sensors = i + 1; | |
261 | } | |
262 | data->temperatures_probed = 1; | |
263 | return 0; | |
264 | } | |
6f9703d0 | 265 | |
89fac11c DW |
266 | static int adt7470_update_thread(void *p) |
267 | { | |
268 | struct i2c_client *client = p; | |
269 | struct adt7470_data *data = i2c_get_clientdata(client); | |
270 | ||
271 | while (!kthread_should_stop()) { | |
272 | mutex_lock(&data->lock); | |
273 | adt7470_read_temperatures(client, data); | |
274 | mutex_unlock(&data->lock); | |
93cacfd4 JS |
275 | |
276 | set_current_state(TASK_INTERRUPTIBLE); | |
89fac11c DW |
277 | if (kthread_should_stop()) |
278 | break; | |
93cacfd4 JS |
279 | |
280 | schedule_timeout(msecs_to_jiffies(data->auto_update_interval)); | |
89fac11c DW |
281 | } |
282 | ||
89fac11c DW |
283 | return 0; |
284 | } | |
285 | ||
286 | static struct adt7470_data *adt7470_update_device(struct device *dev) | |
287 | { | |
30485776 AL |
288 | struct adt7470_data *data = dev_get_drvdata(dev); |
289 | struct i2c_client *client = data->client; | |
89fac11c DW |
290 | unsigned long local_jiffies = jiffies; |
291 | u8 cfg; | |
292 | int i; | |
293 | int need_sensors = 1; | |
294 | int need_limits = 1; | |
295 | ||
296 | /* | |
297 | * Figure out if we need to update the shadow registers. | |
298 | * Lockless means that we may occasionally report out of | |
299 | * date data. | |
300 | */ | |
301 | if (time_before(local_jiffies, data->sensors_last_updated + | |
302 | SENSOR_REFRESH_INTERVAL) && | |
303 | data->sensors_valid) | |
304 | need_sensors = 0; | |
305 | ||
306 | if (time_before(local_jiffies, data->limits_last_updated + | |
307 | LIMIT_REFRESH_INTERVAL) && | |
308 | data->limits_valid) | |
309 | need_limits = 0; | |
310 | ||
311 | if (!need_sensors && !need_limits) | |
312 | return data; | |
313 | ||
314 | mutex_lock(&data->lock); | |
315 | if (!need_sensors) | |
316 | goto no_sensor_update; | |
317 | ||
318 | if (!data->temperatures_probed) | |
319 | adt7470_read_temperatures(client, data); | |
320 | else | |
2f22d5df | 321 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) |
89fac11c DW |
322 | data->temp[i] = i2c_smbus_read_byte_data(client, |
323 | ADT7470_TEMP_REG(i)); | |
2f22d5df | 324 | |
6f9703d0 DW |
325 | for (i = 0; i < ADT7470_FAN_COUNT; i++) |
326 | data->fan[i] = adt7470_read_word_data(client, | |
327 | ADT7470_REG_FAN(i)); | |
328 | ||
329 | for (i = 0; i < ADT7470_PWM_COUNT; i++) { | |
330 | int reg; | |
331 | int reg_mask; | |
332 | ||
333 | data->pwm[i] = i2c_smbus_read_byte_data(client, | |
334 | ADT7470_REG_PWM(i)); | |
335 | ||
336 | if (i % 2) | |
337 | reg_mask = ADT7470_PWM2_AUTO_MASK; | |
338 | else | |
339 | reg_mask = ADT7470_PWM1_AUTO_MASK; | |
340 | ||
341 | reg = ADT7470_REG_PWM_CFG(i); | |
342 | if (i2c_smbus_read_byte_data(client, reg) & reg_mask) | |
343 | data->pwm_automatic[i] = 1; | |
344 | else | |
345 | data->pwm_automatic[i] = 0; | |
346 | ||
347 | reg = ADT7470_REG_PWM_AUTO_TEMP(i); | |
348 | cfg = i2c_smbus_read_byte_data(client, reg); | |
349 | if (!(i % 2)) | |
350 | data->pwm_auto_temp[i] = cfg >> 4; | |
351 | else | |
352 | data->pwm_auto_temp[i] = cfg & 0xF; | |
353 | } | |
354 | ||
355 | if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) & | |
356 | ADT7470_FSPD_MASK) | |
357 | data->force_pwm_max = 1; | |
358 | else | |
359 | data->force_pwm_max = 0; | |
360 | ||
fe03f28c DW |
361 | data->alarm = i2c_smbus_read_byte_data(client, ADT7470_REG_ALARM1); |
362 | if (data->alarm & ADT7470_OOL_ALARM) | |
363 | data->alarm |= ALARM2(i2c_smbus_read_byte_data(client, | |
364 | ADT7470_REG_ALARM2)); | |
6f9703d0 DW |
365 | data->alarms_mask = adt7470_read_word_data(client, |
366 | ADT7470_REG_ALARM1_MASK); | |
367 | ||
368 | data->sensors_last_updated = local_jiffies; | |
369 | data->sensors_valid = 1; | |
370 | ||
371 | no_sensor_update: | |
89fac11c | 372 | if (!need_limits) |
6f9703d0 DW |
373 | goto out; |
374 | ||
375 | for (i = 0; i < ADT7470_TEMP_COUNT; i++) { | |
376 | data->temp_min[i] = i2c_smbus_read_byte_data(client, | |
377 | ADT7470_TEMP_MIN_REG(i)); | |
378 | data->temp_max[i] = i2c_smbus_read_byte_data(client, | |
379 | ADT7470_TEMP_MAX_REG(i)); | |
380 | } | |
381 | ||
382 | for (i = 0; i < ADT7470_FAN_COUNT; i++) { | |
383 | data->fan_min[i] = adt7470_read_word_data(client, | |
384 | ADT7470_REG_FAN_MIN(i)); | |
385 | data->fan_max[i] = adt7470_read_word_data(client, | |
386 | ADT7470_REG_FAN_MAX(i)); | |
387 | } | |
388 | ||
389 | for (i = 0; i < ADT7470_PWM_COUNT; i++) { | |
390 | data->pwm_max[i] = i2c_smbus_read_byte_data(client, | |
391 | ADT7470_REG_PWM_MAX(i)); | |
392 | data->pwm_min[i] = i2c_smbus_read_byte_data(client, | |
393 | ADT7470_REG_PWM_MIN(i)); | |
394 | data->pwm_tmin[i] = i2c_smbus_read_byte_data(client, | |
395 | ADT7470_REG_PWM_TMIN(i)); | |
396 | } | |
397 | ||
398 | data->limits_last_updated = local_jiffies; | |
399 | data->limits_valid = 1; | |
400 | ||
401 | out: | |
402 | mutex_unlock(&data->lock); | |
403 | return data; | |
404 | } | |
405 | ||
808fc6c2 | 406 | static ssize_t auto_update_interval_show(struct device *dev, |
89fac11c DW |
407 | struct device_attribute *devattr, |
408 | char *buf) | |
409 | { | |
410 | struct adt7470_data *data = adt7470_update_device(dev); | |
411 | return sprintf(buf, "%d\n", data->auto_update_interval); | |
412 | } | |
413 | ||
808fc6c2 JL |
414 | static ssize_t auto_update_interval_store(struct device *dev, |
415 | struct device_attribute *devattr, | |
416 | const char *buf, size_t count) | |
89fac11c | 417 | { |
30485776 | 418 | struct adt7470_data *data = dev_get_drvdata(dev); |
89fac11c DW |
419 | long temp; |
420 | ||
179c4fdb | 421 | if (kstrtol(buf, 10, &temp)) |
89fac11c DW |
422 | return -EINVAL; |
423 | ||
2a844c14 | 424 | temp = clamp_val(temp, 0, 60000); |
89fac11c DW |
425 | |
426 | mutex_lock(&data->lock); | |
427 | data->auto_update_interval = temp; | |
428 | mutex_unlock(&data->lock); | |
429 | ||
430 | return count; | |
431 | } | |
432 | ||
808fc6c2 | 433 | static ssize_t num_temp_sensors_show(struct device *dev, |
2f22d5df DW |
434 | struct device_attribute *devattr, |
435 | char *buf) | |
436 | { | |
437 | struct adt7470_data *data = adt7470_update_device(dev); | |
438 | return sprintf(buf, "%d\n", data->num_temp_sensors); | |
439 | } | |
440 | ||
808fc6c2 JL |
441 | static ssize_t num_temp_sensors_store(struct device *dev, |
442 | struct device_attribute *devattr, | |
443 | const char *buf, size_t count) | |
2f22d5df | 444 | { |
30485776 | 445 | struct adt7470_data *data = dev_get_drvdata(dev); |
2f22d5df DW |
446 | long temp; |
447 | ||
179c4fdb | 448 | if (kstrtol(buf, 10, &temp)) |
2f22d5df DW |
449 | return -EINVAL; |
450 | ||
2a844c14 | 451 | temp = clamp_val(temp, -1, 10); |
2f22d5df DW |
452 | |
453 | mutex_lock(&data->lock); | |
454 | data->num_temp_sensors = temp; | |
89fac11c DW |
455 | if (temp < 0) |
456 | data->temperatures_probed = 0; | |
2f22d5df DW |
457 | mutex_unlock(&data->lock); |
458 | ||
459 | return count; | |
460 | } | |
461 | ||
6f9703d0 DW |
462 | static ssize_t show_temp_min(struct device *dev, |
463 | struct device_attribute *devattr, | |
464 | char *buf) | |
465 | { | |
466 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
467 | struct adt7470_data *data = adt7470_update_device(dev); | |
468 | return sprintf(buf, "%d\n", 1000 * data->temp_min[attr->index]); | |
469 | } | |
470 | ||
471 | static ssize_t set_temp_min(struct device *dev, | |
472 | struct device_attribute *devattr, | |
473 | const char *buf, | |
474 | size_t count) | |
475 | { | |
476 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
477 | struct adt7470_data *data = dev_get_drvdata(dev); |
478 | struct i2c_client *client = data->client; | |
05a9bd46 DW |
479 | long temp; |
480 | ||
179c4fdb | 481 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
482 | return -EINVAL; |
483 | ||
64bd708a | 484 | temp = clamp_val(temp, -128000, 127000); |
8f8c1fb0 | 485 | temp = DIV_ROUND_CLOSEST(temp, 1000); |
6f9703d0 DW |
486 | |
487 | mutex_lock(&data->lock); | |
488 | data->temp_min[attr->index] = temp; | |
489 | i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index), | |
490 | temp); | |
491 | mutex_unlock(&data->lock); | |
492 | ||
493 | return count; | |
494 | } | |
495 | ||
496 | static ssize_t show_temp_max(struct device *dev, | |
497 | struct device_attribute *devattr, | |
498 | char *buf) | |
499 | { | |
500 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
501 | struct adt7470_data *data = adt7470_update_device(dev); | |
502 | return sprintf(buf, "%d\n", 1000 * data->temp_max[attr->index]); | |
503 | } | |
504 | ||
505 | static ssize_t set_temp_max(struct device *dev, | |
506 | struct device_attribute *devattr, | |
507 | const char *buf, | |
508 | size_t count) | |
509 | { | |
510 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
511 | struct adt7470_data *data = dev_get_drvdata(dev); |
512 | struct i2c_client *client = data->client; | |
05a9bd46 DW |
513 | long temp; |
514 | ||
179c4fdb | 515 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
516 | return -EINVAL; |
517 | ||
64bd708a | 518 | temp = clamp_val(temp, -128000, 127000); |
8f8c1fb0 | 519 | temp = DIV_ROUND_CLOSEST(temp, 1000); |
6f9703d0 DW |
520 | |
521 | mutex_lock(&data->lock); | |
522 | data->temp_max[attr->index] = temp; | |
523 | i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index), | |
524 | temp); | |
525 | mutex_unlock(&data->lock); | |
526 | ||
527 | return count; | |
528 | } | |
529 | ||
530 | static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, | |
531 | char *buf) | |
532 | { | |
533 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
534 | struct adt7470_data *data = adt7470_update_device(dev); | |
535 | return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]); | |
536 | } | |
537 | ||
808fc6c2 | 538 | static ssize_t alarm_mask_show(struct device *dev, |
6f9703d0 DW |
539 | struct device_attribute *devattr, |
540 | char *buf) | |
541 | { | |
6f9703d0 DW |
542 | struct adt7470_data *data = adt7470_update_device(dev); |
543 | ||
fe03f28c | 544 | return sprintf(buf, "%x\n", data->alarms_mask); |
6f9703d0 DW |
545 | } |
546 | ||
808fc6c2 JL |
547 | static ssize_t alarm_mask_store(struct device *dev, |
548 | struct device_attribute *devattr, | |
549 | const char *buf, size_t count) | |
feca3132 JS |
550 | { |
551 | struct adt7470_data *data = dev_get_drvdata(dev); | |
552 | long mask; | |
553 | ||
554 | if (kstrtoul(buf, 0, &mask)) | |
555 | return -EINVAL; | |
556 | ||
557 | if (mask & ~0xffff) | |
558 | return -EINVAL; | |
559 | ||
560 | mutex_lock(&data->lock); | |
561 | data->alarms_mask = mask; | |
562 | adt7470_write_word_data(data->client, ADT7470_REG_ALARM1_MASK, mask); | |
563 | mutex_unlock(&data->lock); | |
564 | ||
565 | return count; | |
566 | } | |
567 | ||
6f9703d0 DW |
568 | static ssize_t show_fan_max(struct device *dev, |
569 | struct device_attribute *devattr, | |
570 | char *buf) | |
571 | { | |
572 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
573 | struct adt7470_data *data = adt7470_update_device(dev); | |
574 | ||
575 | if (FAN_DATA_VALID(data->fan_max[attr->index])) | |
576 | return sprintf(buf, "%d\n", | |
577 | FAN_PERIOD_TO_RPM(data->fan_max[attr->index])); | |
578 | else | |
579 | return sprintf(buf, "0\n"); | |
580 | } | |
581 | ||
582 | static ssize_t set_fan_max(struct device *dev, | |
583 | struct device_attribute *devattr, | |
584 | const char *buf, size_t count) | |
585 | { | |
586 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
587 | struct adt7470_data *data = dev_get_drvdata(dev); |
588 | struct i2c_client *client = data->client; | |
05a9bd46 | 589 | long temp; |
6f9703d0 | 590 | |
179c4fdb | 591 | if (kstrtol(buf, 10, &temp) || !temp) |
6f9703d0 | 592 | return -EINVAL; |
05a9bd46 | 593 | |
6f9703d0 | 594 | temp = FAN_RPM_TO_PERIOD(temp); |
2a844c14 | 595 | temp = clamp_val(temp, 1, 65534); |
6f9703d0 DW |
596 | |
597 | mutex_lock(&data->lock); | |
598 | data->fan_max[attr->index] = temp; | |
599 | adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp); | |
600 | mutex_unlock(&data->lock); | |
601 | ||
602 | return count; | |
603 | } | |
604 | ||
605 | static ssize_t show_fan_min(struct device *dev, | |
606 | struct device_attribute *devattr, | |
607 | char *buf) | |
608 | { | |
609 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
610 | struct adt7470_data *data = adt7470_update_device(dev); | |
611 | ||
612 | if (FAN_DATA_VALID(data->fan_min[attr->index])) | |
613 | return sprintf(buf, "%d\n", | |
614 | FAN_PERIOD_TO_RPM(data->fan_min[attr->index])); | |
615 | else | |
616 | return sprintf(buf, "0\n"); | |
617 | } | |
618 | ||
619 | static ssize_t set_fan_min(struct device *dev, | |
620 | struct device_attribute *devattr, | |
621 | const char *buf, size_t count) | |
622 | { | |
623 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
624 | struct adt7470_data *data = dev_get_drvdata(dev); |
625 | struct i2c_client *client = data->client; | |
05a9bd46 | 626 | long temp; |
6f9703d0 | 627 | |
179c4fdb | 628 | if (kstrtol(buf, 10, &temp) || !temp) |
6f9703d0 | 629 | return -EINVAL; |
05a9bd46 | 630 | |
6f9703d0 | 631 | temp = FAN_RPM_TO_PERIOD(temp); |
2a844c14 | 632 | temp = clamp_val(temp, 1, 65534); |
6f9703d0 DW |
633 | |
634 | mutex_lock(&data->lock); | |
635 | data->fan_min[attr->index] = temp; | |
636 | adt7470_write_word_data(client, ADT7470_REG_FAN_MIN(attr->index), temp); | |
637 | mutex_unlock(&data->lock); | |
638 | ||
639 | return count; | |
640 | } | |
641 | ||
642 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, | |
643 | char *buf) | |
644 | { | |
645 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
646 | struct adt7470_data *data = adt7470_update_device(dev); | |
647 | ||
648 | if (FAN_DATA_VALID(data->fan[attr->index])) | |
649 | return sprintf(buf, "%d\n", | |
650 | FAN_PERIOD_TO_RPM(data->fan[attr->index])); | |
651 | else | |
652 | return sprintf(buf, "0\n"); | |
653 | } | |
654 | ||
655 | static ssize_t show_force_pwm_max(struct device *dev, | |
656 | struct device_attribute *devattr, | |
657 | char *buf) | |
658 | { | |
659 | struct adt7470_data *data = adt7470_update_device(dev); | |
660 | return sprintf(buf, "%d\n", data->force_pwm_max); | |
661 | } | |
662 | ||
663 | static ssize_t set_force_pwm_max(struct device *dev, | |
664 | struct device_attribute *devattr, | |
665 | const char *buf, | |
666 | size_t count) | |
667 | { | |
30485776 AL |
668 | struct adt7470_data *data = dev_get_drvdata(dev); |
669 | struct i2c_client *client = data->client; | |
05a9bd46 | 670 | long temp; |
6f9703d0 DW |
671 | u8 reg; |
672 | ||
179c4fdb | 673 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
674 | return -EINVAL; |
675 | ||
6f9703d0 DW |
676 | mutex_lock(&data->lock); |
677 | data->force_pwm_max = temp; | |
678 | reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
679 | if (temp) | |
680 | reg |= ADT7470_FSPD_MASK; | |
681 | else | |
682 | reg &= ~ADT7470_FSPD_MASK; | |
683 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg); | |
684 | mutex_unlock(&data->lock); | |
685 | ||
686 | return count; | |
687 | } | |
688 | ||
689 | static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr, | |
690 | char *buf) | |
691 | { | |
692 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
693 | struct adt7470_data *data = adt7470_update_device(dev); | |
694 | return sprintf(buf, "%d\n", data->pwm[attr->index]); | |
695 | } | |
696 | ||
697 | static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, | |
698 | const char *buf, size_t count) | |
699 | { | |
700 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
701 | struct adt7470_data *data = dev_get_drvdata(dev); |
702 | struct i2c_client *client = data->client; | |
05a9bd46 DW |
703 | long temp; |
704 | ||
179c4fdb | 705 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
706 | return -EINVAL; |
707 | ||
2a844c14 | 708 | temp = clamp_val(temp, 0, 255); |
6f9703d0 DW |
709 | |
710 | mutex_lock(&data->lock); | |
711 | data->pwm[attr->index] = temp; | |
712 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM(attr->index), temp); | |
713 | mutex_unlock(&data->lock); | |
714 | ||
715 | return count; | |
716 | } | |
717 | ||
aa18cc91 JS |
718 | /* These are the valid PWM frequencies to the nearest Hz */ |
719 | static const int adt7470_freq_map[] = { | |
720 | 11, 15, 22, 29, 35, 44, 59, 88, 1400, 22500 | |
721 | }; | |
722 | ||
808fc6c2 JL |
723 | static ssize_t pwm1_freq_show(struct device *dev, |
724 | struct device_attribute *devattr, char *buf) | |
aa18cc91 JS |
725 | { |
726 | struct adt7470_data *data = adt7470_update_device(dev); | |
727 | unsigned char cfg_reg_1; | |
728 | unsigned char cfg_reg_2; | |
729 | int index; | |
730 | ||
731 | mutex_lock(&data->lock); | |
732 | cfg_reg_1 = i2c_smbus_read_byte_data(data->client, ADT7470_REG_CFG); | |
733 | cfg_reg_2 = i2c_smbus_read_byte_data(data->client, ADT7470_REG_CFG_2); | |
734 | mutex_unlock(&data->lock); | |
735 | ||
736 | index = (cfg_reg_2 & ADT7470_FREQ_MASK) >> ADT7470_FREQ_SHIFT; | |
737 | if (!(cfg_reg_1 & ADT7470_CFG_LF)) | |
738 | index += 8; | |
739 | if (index >= ARRAY_SIZE(adt7470_freq_map)) | |
740 | index = ARRAY_SIZE(adt7470_freq_map) - 1; | |
741 | ||
742 | return scnprintf(buf, PAGE_SIZE, "%d\n", adt7470_freq_map[index]); | |
743 | } | |
744 | ||
808fc6c2 JL |
745 | static ssize_t pwm1_freq_store(struct device *dev, |
746 | struct device_attribute *devattr, | |
747 | const char *buf, size_t count) | |
aa18cc91 JS |
748 | { |
749 | struct adt7470_data *data = dev_get_drvdata(dev); | |
750 | struct i2c_client *client = data->client; | |
751 | long freq; | |
752 | int index; | |
753 | int low_freq = ADT7470_CFG_LF; | |
754 | unsigned char val; | |
755 | ||
756 | if (kstrtol(buf, 10, &freq)) | |
757 | return -EINVAL; | |
758 | ||
759 | /* Round the user value given to the closest available frequency */ | |
760 | index = find_closest(freq, adt7470_freq_map, | |
761 | ARRAY_SIZE(adt7470_freq_map)); | |
762 | ||
763 | if (index >= 8) { | |
764 | index -= 8; | |
765 | low_freq = 0; | |
766 | } | |
767 | ||
768 | mutex_lock(&data->lock); | |
769 | /* Configuration Register 1 */ | |
770 | val = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
771 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, | |
772 | (val & ~ADT7470_CFG_LF) | low_freq); | |
773 | /* Configuration Register 2 */ | |
774 | val = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG_2); | |
775 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG_2, | |
776 | (val & ~ADT7470_FREQ_MASK) | (index << ADT7470_FREQ_SHIFT)); | |
777 | mutex_unlock(&data->lock); | |
778 | ||
779 | return count; | |
780 | } | |
781 | ||
6f9703d0 DW |
782 | static ssize_t show_pwm_max(struct device *dev, |
783 | struct device_attribute *devattr, | |
784 | char *buf) | |
785 | { | |
786 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
787 | struct adt7470_data *data = adt7470_update_device(dev); | |
788 | return sprintf(buf, "%d\n", data->pwm_max[attr->index]); | |
789 | } | |
790 | ||
791 | static ssize_t set_pwm_max(struct device *dev, | |
792 | struct device_attribute *devattr, | |
793 | const char *buf, | |
794 | size_t count) | |
795 | { | |
796 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
797 | struct adt7470_data *data = dev_get_drvdata(dev); |
798 | struct i2c_client *client = data->client; | |
05a9bd46 DW |
799 | long temp; |
800 | ||
179c4fdb | 801 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
802 | return -EINVAL; |
803 | ||
2a844c14 | 804 | temp = clamp_val(temp, 0, 255); |
6f9703d0 DW |
805 | |
806 | mutex_lock(&data->lock); | |
807 | data->pwm_max[attr->index] = temp; | |
808 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MAX(attr->index), | |
809 | temp); | |
810 | mutex_unlock(&data->lock); | |
811 | ||
812 | return count; | |
813 | } | |
814 | ||
815 | static ssize_t show_pwm_min(struct device *dev, | |
816 | struct device_attribute *devattr, | |
817 | char *buf) | |
818 | { | |
819 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
820 | struct adt7470_data *data = adt7470_update_device(dev); | |
821 | return sprintf(buf, "%d\n", data->pwm_min[attr->index]); | |
822 | } | |
823 | ||
824 | static ssize_t set_pwm_min(struct device *dev, | |
825 | struct device_attribute *devattr, | |
826 | const char *buf, | |
827 | size_t count) | |
828 | { | |
829 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
830 | struct adt7470_data *data = dev_get_drvdata(dev); |
831 | struct i2c_client *client = data->client; | |
05a9bd46 DW |
832 | long temp; |
833 | ||
179c4fdb | 834 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
835 | return -EINVAL; |
836 | ||
2a844c14 | 837 | temp = clamp_val(temp, 0, 255); |
6f9703d0 DW |
838 | |
839 | mutex_lock(&data->lock); | |
840 | data->pwm_min[attr->index] = temp; | |
841 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_MIN(attr->index), | |
842 | temp); | |
843 | mutex_unlock(&data->lock); | |
844 | ||
845 | return count; | |
846 | } | |
847 | ||
848 | static ssize_t show_pwm_tmax(struct device *dev, | |
849 | struct device_attribute *devattr, | |
850 | char *buf) | |
851 | { | |
852 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
853 | struct adt7470_data *data = adt7470_update_device(dev); | |
854 | /* the datasheet says that tmax = tmin + 20C */ | |
855 | return sprintf(buf, "%d\n", 1000 * (20 + data->pwm_tmin[attr->index])); | |
856 | } | |
857 | ||
858 | static ssize_t show_pwm_tmin(struct device *dev, | |
859 | struct device_attribute *devattr, | |
860 | char *buf) | |
861 | { | |
862 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
863 | struct adt7470_data *data = adt7470_update_device(dev); | |
864 | return sprintf(buf, "%d\n", 1000 * data->pwm_tmin[attr->index]); | |
865 | } | |
866 | ||
867 | static ssize_t set_pwm_tmin(struct device *dev, | |
868 | struct device_attribute *devattr, | |
869 | const char *buf, | |
870 | size_t count) | |
871 | { | |
872 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
873 | struct adt7470_data *data = dev_get_drvdata(dev); |
874 | struct i2c_client *client = data->client; | |
05a9bd46 DW |
875 | long temp; |
876 | ||
179c4fdb | 877 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
878 | return -EINVAL; |
879 | ||
64bd708a | 880 | temp = clamp_val(temp, -128000, 127000); |
8f8c1fb0 | 881 | temp = DIV_ROUND_CLOSEST(temp, 1000); |
6f9703d0 DW |
882 | |
883 | mutex_lock(&data->lock); | |
884 | data->pwm_tmin[attr->index] = temp; | |
885 | i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index), | |
886 | temp); | |
887 | mutex_unlock(&data->lock); | |
888 | ||
889 | return count; | |
890 | } | |
891 | ||
892 | static ssize_t show_pwm_auto(struct device *dev, | |
893 | struct device_attribute *devattr, | |
894 | char *buf) | |
895 | { | |
896 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
897 | struct adt7470_data *data = adt7470_update_device(dev); | |
898 | return sprintf(buf, "%d\n", 1 + data->pwm_automatic[attr->index]); | |
899 | } | |
900 | ||
901 | static ssize_t set_pwm_auto(struct device *dev, | |
902 | struct device_attribute *devattr, | |
903 | const char *buf, | |
904 | size_t count) | |
905 | { | |
906 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
907 | struct adt7470_data *data = dev_get_drvdata(dev); |
908 | struct i2c_client *client = data->client; | |
6f9703d0 DW |
909 | int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index); |
910 | int pwm_auto_reg_mask; | |
05a9bd46 | 911 | long temp; |
6f9703d0 DW |
912 | u8 reg; |
913 | ||
179c4fdb | 914 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
915 | return -EINVAL; |
916 | ||
6f9703d0 DW |
917 | if (attr->index % 2) |
918 | pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK; | |
919 | else | |
920 | pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK; | |
921 | ||
922 | if (temp != 2 && temp != 1) | |
923 | return -EINVAL; | |
924 | temp--; | |
925 | ||
926 | mutex_lock(&data->lock); | |
927 | data->pwm_automatic[attr->index] = temp; | |
928 | reg = i2c_smbus_read_byte_data(client, pwm_auto_reg); | |
929 | if (temp) | |
930 | reg |= pwm_auto_reg_mask; | |
931 | else | |
932 | reg &= ~pwm_auto_reg_mask; | |
933 | i2c_smbus_write_byte_data(client, pwm_auto_reg, reg); | |
934 | mutex_unlock(&data->lock); | |
935 | ||
936 | return count; | |
937 | } | |
938 | ||
939 | static ssize_t show_pwm_auto_temp(struct device *dev, | |
940 | struct device_attribute *devattr, | |
941 | char *buf) | |
942 | { | |
943 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
944 | struct adt7470_data *data = adt7470_update_device(dev); | |
945 | u8 ctrl = data->pwm_auto_temp[attr->index]; | |
946 | ||
947 | if (ctrl) | |
948 | return sprintf(buf, "%d\n", 1 << (ctrl - 1)); | |
949 | else | |
950 | return sprintf(buf, "%d\n", ADT7470_PWM_ALL_TEMPS); | |
951 | } | |
952 | ||
953 | static int cvt_auto_temp(int input) | |
954 | { | |
955 | if (input == ADT7470_PWM_ALL_TEMPS) | |
956 | return 0; | |
ce9c2f44 | 957 | if (input < 1 || !is_power_of_2(input)) |
6f9703d0 DW |
958 | return -EINVAL; |
959 | return ilog2(input) + 1; | |
960 | } | |
961 | ||
962 | static ssize_t set_pwm_auto_temp(struct device *dev, | |
963 | struct device_attribute *devattr, | |
964 | const char *buf, | |
965 | size_t count) | |
966 | { | |
967 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
30485776 AL |
968 | struct adt7470_data *data = dev_get_drvdata(dev); |
969 | struct i2c_client *client = data->client; | |
6f9703d0 | 970 | int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index); |
05a9bd46 | 971 | long temp; |
6f9703d0 DW |
972 | u8 reg; |
973 | ||
179c4fdb | 974 | if (kstrtol(buf, 10, &temp)) |
05a9bd46 DW |
975 | return -EINVAL; |
976 | ||
977 | temp = cvt_auto_temp(temp); | |
6f9703d0 DW |
978 | if (temp < 0) |
979 | return temp; | |
980 | ||
981 | mutex_lock(&data->lock); | |
982 | data->pwm_automatic[attr->index] = temp; | |
983 | reg = i2c_smbus_read_byte_data(client, pwm_auto_reg); | |
984 | ||
985 | if (!(attr->index % 2)) { | |
986 | reg &= 0xF; | |
987 | reg |= (temp << 4) & 0xF0; | |
988 | } else { | |
989 | reg &= 0xF0; | |
990 | reg |= temp & 0xF; | |
991 | } | |
992 | ||
993 | i2c_smbus_write_byte_data(client, pwm_auto_reg, reg); | |
994 | mutex_unlock(&data->lock); | |
995 | ||
996 | return count; | |
997 | } | |
998 | ||
fe03f28c DW |
999 | static ssize_t show_alarm(struct device *dev, |
1000 | struct device_attribute *devattr, | |
1001 | char *buf) | |
1002 | { | |
1003 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
1004 | struct adt7470_data *data = adt7470_update_device(dev); | |
1005 | ||
1006 | if (data->alarm & attr->index) | |
1007 | return sprintf(buf, "1\n"); | |
1008 | else | |
1009 | return sprintf(buf, "0\n"); | |
1010 | } | |
1011 | ||
808fc6c2 JL |
1012 | static DEVICE_ATTR_RW(alarm_mask); |
1013 | static DEVICE_ATTR_RW(num_temp_sensors); | |
1014 | static DEVICE_ATTR_RW(auto_update_interval); | |
6f9703d0 DW |
1015 | |
1016 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1017 | set_temp_max, 0); | |
1018 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1019 | set_temp_max, 1); | |
1020 | static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1021 | set_temp_max, 2); | |
1022 | static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1023 | set_temp_max, 3); | |
1024 | static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1025 | set_temp_max, 4); | |
1026 | static SENSOR_DEVICE_ATTR(temp6_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1027 | set_temp_max, 5); | |
1028 | static SENSOR_DEVICE_ATTR(temp7_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1029 | set_temp_max, 6); | |
1030 | static SENSOR_DEVICE_ATTR(temp8_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1031 | set_temp_max, 7); | |
1032 | static SENSOR_DEVICE_ATTR(temp9_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1033 | set_temp_max, 8); | |
1034 | static SENSOR_DEVICE_ATTR(temp10_max, S_IWUSR | S_IRUGO, show_temp_max, | |
1035 | set_temp_max, 9); | |
1036 | ||
1037 | static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1038 | set_temp_min, 0); | |
1039 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1040 | set_temp_min, 1); | |
1041 | static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1042 | set_temp_min, 2); | |
1043 | static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1044 | set_temp_min, 3); | |
1045 | static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1046 | set_temp_min, 4); | |
1047 | static SENSOR_DEVICE_ATTR(temp6_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1048 | set_temp_min, 5); | |
1049 | static SENSOR_DEVICE_ATTR(temp7_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1050 | set_temp_min, 6); | |
1051 | static SENSOR_DEVICE_ATTR(temp8_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1052 | set_temp_min, 7); | |
1053 | static SENSOR_DEVICE_ATTR(temp9_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1054 | set_temp_min, 8); | |
1055 | static SENSOR_DEVICE_ATTR(temp10_min, S_IWUSR | S_IRUGO, show_temp_min, | |
1056 | set_temp_min, 9); | |
1057 | ||
1058 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); | |
1059 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); | |
1060 | static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); | |
1061 | static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); | |
1062 | static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4); | |
1063 | static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5); | |
1064 | static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6); | |
1065 | static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7); | |
1066 | static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8); | |
1067 | static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9); | |
1068 | ||
fe03f28c DW |
1069 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, |
1070 | ADT7470_R1T_ALARM); | |
1071 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, | |
1072 | ADT7470_R2T_ALARM); | |
1073 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, | |
1074 | ADT7470_R3T_ALARM); | |
1075 | static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, | |
1076 | ADT7470_R4T_ALARM); | |
1077 | static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL, | |
1078 | ADT7470_R5T_ALARM); | |
1079 | static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL, | |
1080 | ADT7470_R6T_ALARM); | |
1081 | static SENSOR_DEVICE_ATTR(temp7_alarm, S_IRUGO, show_alarm, NULL, | |
1082 | ADT7470_R7T_ALARM); | |
1083 | static SENSOR_DEVICE_ATTR(temp8_alarm, S_IRUGO, show_alarm, NULL, | |
1084 | ALARM2(ADT7470_R8T_ALARM)); | |
1085 | static SENSOR_DEVICE_ATTR(temp9_alarm, S_IRUGO, show_alarm, NULL, | |
1086 | ALARM2(ADT7470_R9T_ALARM)); | |
1087 | static SENSOR_DEVICE_ATTR(temp10_alarm, S_IRUGO, show_alarm, NULL, | |
1088 | ALARM2(ADT7470_R10T_ALARM)); | |
1089 | ||
6f9703d0 DW |
1090 | static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max, |
1091 | set_fan_max, 0); | |
1092 | static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max, | |
1093 | set_fan_max, 1); | |
1094 | static SENSOR_DEVICE_ATTR(fan3_max, S_IWUSR | S_IRUGO, show_fan_max, | |
1095 | set_fan_max, 2); | |
1096 | static SENSOR_DEVICE_ATTR(fan4_max, S_IWUSR | S_IRUGO, show_fan_max, | |
1097 | set_fan_max, 3); | |
1098 | ||
1099 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, | |
1100 | set_fan_min, 0); | |
1101 | static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, | |
1102 | set_fan_min, 1); | |
1103 | static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, | |
1104 | set_fan_min, 2); | |
1105 | static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, | |
1106 | set_fan_min, 3); | |
1107 | ||
1108 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); | |
1109 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); | |
1110 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); | |
1111 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); | |
1112 | ||
fe03f28c DW |
1113 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, |
1114 | ALARM2(ADT7470_FAN1_ALARM)); | |
1115 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, | |
1116 | ALARM2(ADT7470_FAN2_ALARM)); | |
1117 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, | |
1118 | ALARM2(ADT7470_FAN3_ALARM)); | |
1119 | static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, | |
1120 | ALARM2(ADT7470_FAN4_ALARM)); | |
1121 | ||
6f9703d0 DW |
1122 | static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO, |
1123 | show_force_pwm_max, set_force_pwm_max, 0); | |
1124 | ||
1125 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0); | |
1126 | static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1); | |
1127 | static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2); | |
1128 | static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3); | |
1129 | ||
808fc6c2 | 1130 | static DEVICE_ATTR_RW(pwm1_freq); |
aa18cc91 | 1131 | |
6f9703d0 DW |
1132 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, |
1133 | show_pwm_min, set_pwm_min, 0); | |
1134 | static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO, | |
1135 | show_pwm_min, set_pwm_min, 1); | |
1136 | static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO, | |
1137 | show_pwm_min, set_pwm_min, 2); | |
1138 | static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO, | |
1139 | show_pwm_min, set_pwm_min, 3); | |
1140 | ||
1141 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
1142 | show_pwm_max, set_pwm_max, 0); | |
1143 | static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
1144 | show_pwm_max, set_pwm_max, 1); | |
1145 | static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
1146 | show_pwm_max, set_pwm_max, 2); | |
1147 | static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO, | |
1148 | show_pwm_max, set_pwm_max, 3); | |
1149 | ||
1150 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, | |
1151 | show_pwm_tmin, set_pwm_tmin, 0); | |
1152 | static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO, | |
1153 | show_pwm_tmin, set_pwm_tmin, 1); | |
1154 | static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO, | |
1155 | show_pwm_tmin, set_pwm_tmin, 2); | |
1156 | static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO, | |
1157 | show_pwm_tmin, set_pwm_tmin, 3); | |
1158 | ||
1159 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
1160 | NULL, 0); | |
1161 | static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
1162 | NULL, 1); | |
1163 | static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
1164 | NULL, 2); | |
1165 | static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IRUGO, show_pwm_tmax, | |
1166 | NULL, 3); | |
1167 | ||
1168 | static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
1169 | set_pwm_auto, 0); | |
1170 | static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
1171 | set_pwm_auto, 1); | |
1172 | static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
1173 | set_pwm_auto, 2); | |
1174 | static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto, | |
1175 | set_pwm_auto, 3); | |
1176 | ||
1177 | static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO, | |
1178 | show_pwm_auto_temp, set_pwm_auto_temp, 0); | |
1179 | static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO, | |
1180 | show_pwm_auto_temp, set_pwm_auto_temp, 1); | |
1181 | static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO, | |
1182 | show_pwm_auto_temp, set_pwm_auto_temp, 2); | |
1183 | static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO, | |
1184 | show_pwm_auto_temp, set_pwm_auto_temp, 3); | |
1185 | ||
30485776 | 1186 | static struct attribute *adt7470_attrs[] = { |
fe03f28c | 1187 | &dev_attr_alarm_mask.attr, |
2f22d5df | 1188 | &dev_attr_num_temp_sensors.attr, |
89fac11c | 1189 | &dev_attr_auto_update_interval.attr, |
6f9703d0 DW |
1190 | &sensor_dev_attr_temp1_max.dev_attr.attr, |
1191 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
1192 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
1193 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
1194 | &sensor_dev_attr_temp5_max.dev_attr.attr, | |
1195 | &sensor_dev_attr_temp6_max.dev_attr.attr, | |
1196 | &sensor_dev_attr_temp7_max.dev_attr.attr, | |
1197 | &sensor_dev_attr_temp8_max.dev_attr.attr, | |
1198 | &sensor_dev_attr_temp9_max.dev_attr.attr, | |
1199 | &sensor_dev_attr_temp10_max.dev_attr.attr, | |
1200 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
1201 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
1202 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
1203 | &sensor_dev_attr_temp4_min.dev_attr.attr, | |
1204 | &sensor_dev_attr_temp5_min.dev_attr.attr, | |
1205 | &sensor_dev_attr_temp6_min.dev_attr.attr, | |
1206 | &sensor_dev_attr_temp7_min.dev_attr.attr, | |
1207 | &sensor_dev_attr_temp8_min.dev_attr.attr, | |
1208 | &sensor_dev_attr_temp9_min.dev_attr.attr, | |
1209 | &sensor_dev_attr_temp10_min.dev_attr.attr, | |
1210 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
1211 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
1212 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
1213 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
1214 | &sensor_dev_attr_temp5_input.dev_attr.attr, | |
1215 | &sensor_dev_attr_temp6_input.dev_attr.attr, | |
1216 | &sensor_dev_attr_temp7_input.dev_attr.attr, | |
1217 | &sensor_dev_attr_temp8_input.dev_attr.attr, | |
1218 | &sensor_dev_attr_temp9_input.dev_attr.attr, | |
1219 | &sensor_dev_attr_temp10_input.dev_attr.attr, | |
fe03f28c DW |
1220 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
1221 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
1222 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
1223 | &sensor_dev_attr_temp4_alarm.dev_attr.attr, | |
1224 | &sensor_dev_attr_temp5_alarm.dev_attr.attr, | |
1225 | &sensor_dev_attr_temp6_alarm.dev_attr.attr, | |
1226 | &sensor_dev_attr_temp7_alarm.dev_attr.attr, | |
1227 | &sensor_dev_attr_temp8_alarm.dev_attr.attr, | |
1228 | &sensor_dev_attr_temp9_alarm.dev_attr.attr, | |
1229 | &sensor_dev_attr_temp10_alarm.dev_attr.attr, | |
6f9703d0 DW |
1230 | &sensor_dev_attr_fan1_max.dev_attr.attr, |
1231 | &sensor_dev_attr_fan2_max.dev_attr.attr, | |
1232 | &sensor_dev_attr_fan3_max.dev_attr.attr, | |
1233 | &sensor_dev_attr_fan4_max.dev_attr.attr, | |
1234 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
1235 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
1236 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
1237 | &sensor_dev_attr_fan4_min.dev_attr.attr, | |
1238 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
1239 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
1240 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
1241 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
fe03f28c DW |
1242 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
1243 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
1244 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
1245 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, | |
6f9703d0 DW |
1246 | &sensor_dev_attr_force_pwm_max.dev_attr.attr, |
1247 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
aa18cc91 | 1248 | &dev_attr_pwm1_freq.attr, |
6f9703d0 DW |
1249 | &sensor_dev_attr_pwm2.dev_attr.attr, |
1250 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
1251 | &sensor_dev_attr_pwm4.dev_attr.attr, | |
1252 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, | |
1253 | &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, | |
1254 | &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, | |
1255 | &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr, | |
1256 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
1257 | &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, | |
1258 | &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, | |
1259 | &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr, | |
1260 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, | |
1261 | &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, | |
1262 | &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, | |
1263 | &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr, | |
1264 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, | |
1265 | &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, | |
1266 | &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, | |
1267 | &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.attr, | |
1268 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
1269 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
1270 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
1271 | &sensor_dev_attr_pwm4_enable.dev_attr.attr, | |
1272 | &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, | |
1273 | &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, | |
1274 | &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, | |
1275 | &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr, | |
1276 | NULL | |
1277 | }; | |
1278 | ||
30485776 AL |
1279 | ATTRIBUTE_GROUPS(adt7470); |
1280 | ||
008f1ca5 | 1281 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 1282 | static int adt7470_detect(struct i2c_client *client, |
008f1ca5 | 1283 | struct i2c_board_info *info) |
6f9703d0 | 1284 | { |
008f1ca5 | 1285 | struct i2c_adapter *adapter = client->adapter; |
52df6440 | 1286 | int vendor, device, revision; |
6f9703d0 DW |
1287 | |
1288 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
008f1ca5 | 1289 | return -ENODEV; |
6f9703d0 | 1290 | |
52df6440 JD |
1291 | vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR); |
1292 | if (vendor != ADT7470_VENDOR) | |
1293 | return -ENODEV; | |
6f9703d0 | 1294 | |
52df6440 JD |
1295 | device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE); |
1296 | if (device != ADT7470_DEVICE) | |
1297 | return -ENODEV; | |
6f9703d0 | 1298 | |
52df6440 JD |
1299 | revision = i2c_smbus_read_byte_data(client, ADT7470_REG_REVISION); |
1300 | if (revision != ADT7470_REVISION) | |
1301 | return -ENODEV; | |
6f9703d0 | 1302 | |
008f1ca5 | 1303 | strlcpy(info->type, "adt7470", I2C_NAME_SIZE); |
6f9703d0 | 1304 | |
008f1ca5 JD |
1305 | return 0; |
1306 | } | |
1307 | ||
9027d933 AL |
1308 | static void adt7470_init_client(struct i2c_client *client) |
1309 | { | |
1310 | int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG); | |
1311 | ||
1312 | if (reg < 0) { | |
1313 | dev_err(&client->dev, "cannot read configuration register\n"); | |
1314 | } else { | |
1315 | /* start monitoring (and do a self-test) */ | |
1316 | i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3); | |
1317 | } | |
1318 | } | |
1319 | ||
008f1ca5 JD |
1320 | static int adt7470_probe(struct i2c_client *client, |
1321 | const struct i2c_device_id *id) | |
1322 | { | |
30485776 | 1323 | struct device *dev = &client->dev; |
008f1ca5 | 1324 | struct adt7470_data *data; |
30485776 | 1325 | struct device *hwmon_dev; |
008f1ca5 | 1326 | |
30485776 | 1327 | data = devm_kzalloc(dev, sizeof(struct adt7470_data), GFP_KERNEL); |
9cc7dcc5 GR |
1328 | if (!data) |
1329 | return -ENOMEM; | |
008f1ca5 | 1330 | |
2f22d5df | 1331 | data->num_temp_sensors = -1; |
89fac11c | 1332 | data->auto_update_interval = AUTO_UPDATE_INTERVAL; |
2f22d5df | 1333 | |
008f1ca5 | 1334 | i2c_set_clientdata(client, data); |
30485776 | 1335 | data->client = client; |
008f1ca5 | 1336 | mutex_init(&data->lock); |
6f9703d0 DW |
1337 | |
1338 | dev_info(&client->dev, "%s chip found\n", client->name); | |
1339 | ||
1340 | /* Initialize the ADT7470 chip */ | |
1341 | adt7470_init_client(client); | |
1342 | ||
1343 | /* Register sysfs hooks */ | |
30485776 AL |
1344 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
1345 | data, | |
1346 | adt7470_groups); | |
1347 | ||
1348 | if (IS_ERR(hwmon_dev)) | |
1349 | return PTR_ERR(hwmon_dev); | |
6f9703d0 | 1350 | |
f170168b | 1351 | data->auto_update = kthread_run(adt7470_update_thread, client, "%s", |
30485776 | 1352 | dev_name(hwmon_dev)); |
f7334b4c | 1353 | if (IS_ERR(data->auto_update)) { |
30485776 | 1354 | return PTR_ERR(data->auto_update); |
f7334b4c | 1355 | } |
89fac11c | 1356 | |
6f9703d0 | 1357 | return 0; |
6f9703d0 DW |
1358 | } |
1359 | ||
008f1ca5 | 1360 | static int adt7470_remove(struct i2c_client *client) |
6f9703d0 DW |
1361 | { |
1362 | struct adt7470_data *data = i2c_get_clientdata(client); | |
1363 | ||
89fac11c | 1364 | kthread_stop(data->auto_update); |
6f9703d0 DW |
1365 | return 0; |
1366 | } | |
1367 | ||
9027d933 AL |
1368 | static const struct i2c_device_id adt7470_id[] = { |
1369 | { "adt7470", 0 }, | |
1370 | { } | |
1371 | }; | |
1372 | MODULE_DEVICE_TABLE(i2c, adt7470_id); | |
1373 | ||
1374 | static struct i2c_driver adt7470_driver = { | |
1375 | .class = I2C_CLASS_HWMON, | |
1376 | .driver = { | |
1377 | .name = "adt7470", | |
1378 | }, | |
1379 | .probe = adt7470_probe, | |
1380 | .remove = adt7470_remove, | |
1381 | .id_table = adt7470_id, | |
1382 | .detect = adt7470_detect, | |
1383 | .address_list = normal_i2c, | |
1384 | }; | |
1385 | ||
f0967eea | 1386 | module_i2c_driver(adt7470_driver); |
6f9703d0 | 1387 | |
5407e051 | 1388 | MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>"); |
6f9703d0 DW |
1389 | MODULE_DESCRIPTION("ADT7470 driver"); |
1390 | MODULE_LICENSE("GPL"); |