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1da177e4 LT |
1 | /* |
2 | * lm63.c - driver for the National Semiconductor LM63 temperature sensor | |
3 | * with integrated fan control | |
7c81c60f | 4 | * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> |
1da177e4 LT |
5 | * Based on the lm90 driver. |
6 | * | |
7 | * The LM63 is a sensor chip made by National Semiconductor. It measures | |
8 | * two temperatures (its own and one external one) and the speed of one | |
9 | * fan, those speed it can additionally control. Complete datasheet can be | |
10 | * obtained from National's website at: | |
11 | * http://www.national.com/pf/LM/LM63.html | |
12 | * | |
13 | * The LM63 is basically an LM86 with fan speed monitoring and control | |
14 | * capabilities added. It misses some of the LM86 features though: | |
15 | * - No low limit for local temperature. | |
16 | * - No critical limit for local temperature. | |
17 | * - Critical limit for remote temperature can be changed only once. We | |
18 | * will consider that the critical limit is read-only. | |
19 | * | |
20 | * The datasheet isn't very clear about what the tachometer reading is. | |
21 | * I had a explanation from National Semiconductor though. The two lower | |
22 | * bits of the read value have to be masked out. The value is still 16 bit | |
23 | * in width. | |
24 | * | |
25 | * This program is free software; you can redistribute it and/or modify | |
26 | * it under the terms of the GNU General Public License as published by | |
27 | * the Free Software Foundation; either version 2 of the License, or | |
28 | * (at your option) any later version. | |
29 | * | |
30 | * This program is distributed in the hope that it will be useful, | |
31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
33 | * GNU General Public License for more details. | |
34 | * | |
35 | * You should have received a copy of the GNU General Public License | |
36 | * along with this program; if not, write to the Free Software | |
37 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
38 | */ | |
39 | ||
1da177e4 LT |
40 | #include <linux/module.h> |
41 | #include <linux/init.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/jiffies.h> | |
44 | #include <linux/i2c.h> | |
10c08f81 | 45 | #include <linux/hwmon-sysfs.h> |
943b0830 MH |
46 | #include <linux/hwmon.h> |
47 | #include <linux/err.h> | |
9a61bf63 | 48 | #include <linux/mutex.h> |
0e39e01c | 49 | #include <linux/sysfs.h> |
210961c4 | 50 | #include <linux/types.h> |
1da177e4 LT |
51 | |
52 | /* | |
53 | * Addresses to scan | |
d93ab780 JD |
54 | * Address is fully defined internally and cannot be changed except for |
55 | * LM64 which has one pin dedicated to address selection. | |
56 | * LM63 and LM96163 have address 0x4c. | |
57 | * LM64 can have address 0x18 or 0x4e. | |
1da177e4 LT |
58 | */ |
59 | ||
10f2ed31 | 60 | static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; |
1da177e4 | 61 | |
1da177e4 LT |
62 | /* |
63 | * The LM63 registers | |
64 | */ | |
65 | ||
66 | #define LM63_REG_CONFIG1 0x03 | |
04738b2b | 67 | #define LM63_REG_CONVRATE 0x04 |
1da177e4 LT |
68 | #define LM63_REG_CONFIG2 0xBF |
69 | #define LM63_REG_CONFIG_FAN 0x4A | |
70 | ||
71 | #define LM63_REG_TACH_COUNT_MSB 0x47 | |
72 | #define LM63_REG_TACH_COUNT_LSB 0x46 | |
73 | #define LM63_REG_TACH_LIMIT_MSB 0x49 | |
74 | #define LM63_REG_TACH_LIMIT_LSB 0x48 | |
75 | ||
76 | #define LM63_REG_PWM_VALUE 0x4C | |
77 | #define LM63_REG_PWM_FREQ 0x4D | |
d216f680 JD |
78 | #define LM63_REG_LUT_TEMP_HYST 0x4F |
79 | #define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr)) | |
80 | #define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr)) | |
1da177e4 LT |
81 | |
82 | #define LM63_REG_LOCAL_TEMP 0x00 | |
83 | #define LM63_REG_LOCAL_HIGH 0x05 | |
84 | ||
85 | #define LM63_REG_REMOTE_TEMP_MSB 0x01 | |
86 | #define LM63_REG_REMOTE_TEMP_LSB 0x10 | |
87 | #define LM63_REG_REMOTE_OFFSET_MSB 0x11 | |
88 | #define LM63_REG_REMOTE_OFFSET_LSB 0x12 | |
89 | #define LM63_REG_REMOTE_HIGH_MSB 0x07 | |
90 | #define LM63_REG_REMOTE_HIGH_LSB 0x13 | |
91 | #define LM63_REG_REMOTE_LOW_MSB 0x08 | |
92 | #define LM63_REG_REMOTE_LOW_LSB 0x14 | |
93 | #define LM63_REG_REMOTE_TCRIT 0x19 | |
94 | #define LM63_REG_REMOTE_TCRIT_HYST 0x21 | |
95 | ||
96 | #define LM63_REG_ALERT_STATUS 0x02 | |
97 | #define LM63_REG_ALERT_MASK 0x16 | |
98 | ||
99 | #define LM63_REG_MAN_ID 0xFE | |
100 | #define LM63_REG_CHIP_ID 0xFF | |
101 | ||
f496b2d4 | 102 | #define LM96163_REG_TRUTHERM 0x30 |
e872c91e GR |
103 | #define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 |
104 | #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 | |
210961c4 GR |
105 | #define LM96163_REG_CONFIG_ENHANCED 0x45 |
106 | ||
04738b2b GR |
107 | #define LM63_MAX_CONVRATE 9 |
108 | ||
109 | #define LM63_MAX_CONVRATE_HZ 32 | |
110 | #define LM96163_MAX_CONVRATE_HZ 26 | |
111 | ||
1da177e4 LT |
112 | /* |
113 | * Conversions and various macros | |
114 | * For tachometer counts, the LM63 uses 16-bit values. | |
115 | * For local temperature and high limit, remote critical limit and hysteresis | |
44bbe87e | 116 | * value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
1da177e4 | 117 | * For remote temperature, low and high limits, it uses signed 11-bit values |
44bbe87e | 118 | * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
2778fb13 DE |
119 | * For LM64 the actual remote diode temperature is 16 degree Celsius higher |
120 | * than the register reading. Remote temperature setpoints have to be | |
121 | * adapted accordingly. | |
1da177e4 LT |
122 | */ |
123 | ||
124 | #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ | |
125 | 5400000 / (reg)) | |
126 | #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ | |
127 | (5400000 / (val)) & 0xFFFC) | |
128 | #define TEMP8_FROM_REG(reg) ((reg) * 1000) | |
7560dc0a GR |
129 | #define TEMP8_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ |
130 | 127000), 1000) | |
131 | #define TEMP8U_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, \ | |
132 | 255000), 1000) | |
1da177e4 | 133 | #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) |
7560dc0a GR |
134 | #define TEMP11_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ |
135 | 127875), 125) * 32) | |
136 | #define TEMP11U_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), 0, \ | |
137 | 255875), 125) * 32) | |
138 | #define HYST_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \ | |
139 | 1000) | |
1da177e4 | 140 | |
04738b2b GR |
141 | #define UPDATE_INTERVAL(max, rate) \ |
142 | ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max)) | |
143 | ||
210961c4 | 144 | enum chips { lm63, lm64, lm96163 }; |
10f2ed31 | 145 | |
1da177e4 LT |
146 | /* |
147 | * Client data (each client gets its own) | |
148 | */ | |
149 | ||
150 | struct lm63_data { | |
e19eea84 | 151 | struct i2c_client *client; |
9a61bf63 | 152 | struct mutex update_lock; |
b76552b3 | 153 | const struct attribute_group *groups[5]; |
1da177e4 | 154 | char valid; /* zero until following fields are valid */ |
d216f680 | 155 | char lut_valid; /* zero until lut fields are valid */ |
1da177e4 | 156 | unsigned long last_updated; /* in jiffies */ |
d216f680 | 157 | unsigned long lut_last_updated; /* in jiffies */ |
04738b2b | 158 | enum chips kind; |
2778fb13 | 159 | int temp2_offset; |
1da177e4 | 160 | |
04738b2b GR |
161 | int update_interval; /* in milliseconds */ |
162 | int max_convrate_hz; | |
2fe28ab5 | 163 | int lut_size; /* 8 or 12 */ |
04738b2b | 164 | |
1da177e4 LT |
165 | /* registers values */ |
166 | u8 config, config_fan; | |
bc51ae11 JD |
167 | u16 fan[2]; /* 0: input |
168 | 1: low limit */ | |
1da177e4 | 169 | u8 pwm1_freq; |
2fe28ab5 JD |
170 | u8 pwm1[13]; /* 0: current output |
171 | 1-12: lookup table */ | |
172 | s8 temp8[15]; /* 0: local input | |
bc51ae11 | 173 | 1: local high limit |
d216f680 | 174 | 2: remote critical limit |
2fe28ab5 | 175 | 3-14: lookup table */ |
786375f7 | 176 | s16 temp11[4]; /* 0: remote input |
bc51ae11 | 177 | 1: remote low limit |
786375f7 GR |
178 | 2: remote high limit |
179 | 3: remote offset */ | |
e872c91e | 180 | u16 temp11u; /* remote input (unsigned) */ |
1da177e4 | 181 | u8 temp2_crit_hyst; |
d216f680 | 182 | u8 lut_temp_hyst; |
1da177e4 | 183 | u8 alarms; |
210961c4 | 184 | bool pwm_highres; |
d216f680 | 185 | bool lut_temp_highres; |
e872c91e | 186 | bool remote_unsigned; /* true if unsigned remote upper limits */ |
f496b2d4 | 187 | bool trutherm; |
1da177e4 LT |
188 | }; |
189 | ||
e872c91e GR |
190 | static inline int temp8_from_reg(struct lm63_data *data, int nr) |
191 | { | |
192 | if (data->remote_unsigned) | |
193 | return TEMP8_FROM_REG((u8)data->temp8[nr]); | |
194 | return TEMP8_FROM_REG(data->temp8[nr]); | |
195 | } | |
196 | ||
d216f680 JD |
197 | static inline int lut_temp_from_reg(struct lm63_data *data, int nr) |
198 | { | |
199 | return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000); | |
200 | } | |
201 | ||
af2ef4fc JD |
202 | static inline int lut_temp_to_reg(struct lm63_data *data, long val) |
203 | { | |
204 | val -= data->temp2_offset; | |
205 | if (data->lut_temp_highres) | |
2a844c14 | 206 | return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500); |
af2ef4fc | 207 | else |
2a844c14 | 208 | return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000); |
af2ef4fc JD |
209 | } |
210 | ||
817c6cc5 JD |
211 | /* |
212 | * Update the lookup table register cache. | |
213 | * client->update_lock must be held when calling this function. | |
214 | */ | |
e19eea84 | 215 | static void lm63_update_lut(struct lm63_data *data) |
817c6cc5 | 216 | { |
e19eea84 | 217 | struct i2c_client *client = data->client; |
817c6cc5 JD |
218 | int i; |
219 | ||
220 | if (time_after(jiffies, data->lut_last_updated + 5 * HZ) || | |
221 | !data->lut_valid) { | |
222 | for (i = 0; i < data->lut_size; i++) { | |
223 | data->pwm1[1 + i] = i2c_smbus_read_byte_data(client, | |
224 | LM63_REG_LUT_PWM(i)); | |
225 | data->temp8[3 + i] = i2c_smbus_read_byte_data(client, | |
226 | LM63_REG_LUT_TEMP(i)); | |
227 | } | |
228 | data->lut_temp_hyst = i2c_smbus_read_byte_data(client, | |
229 | LM63_REG_LUT_TEMP_HYST); | |
230 | ||
231 | data->lut_last_updated = jiffies; | |
232 | data->lut_valid = 1; | |
233 | } | |
234 | } | |
235 | ||
dac27dce JD |
236 | static struct lm63_data *lm63_update_device(struct device *dev) |
237 | { | |
e19eea84 GR |
238 | struct lm63_data *data = dev_get_drvdata(dev); |
239 | struct i2c_client *client = data->client; | |
dac27dce | 240 | unsigned long next_update; |
dac27dce JD |
241 | |
242 | mutex_lock(&data->update_lock); | |
243 | ||
5b0620df JD |
244 | next_update = data->last_updated + |
245 | msecs_to_jiffies(data->update_interval); | |
dac27dce JD |
246 | if (time_after(jiffies, next_update) || !data->valid) { |
247 | if (data->config & 0x04) { /* tachometer enabled */ | |
248 | /* order matters for fan1_input */ | |
249 | data->fan[0] = i2c_smbus_read_byte_data(client, | |
250 | LM63_REG_TACH_COUNT_LSB) & 0xFC; | |
251 | data->fan[0] |= i2c_smbus_read_byte_data(client, | |
252 | LM63_REG_TACH_COUNT_MSB) << 8; | |
253 | data->fan[1] = (i2c_smbus_read_byte_data(client, | |
254 | LM63_REG_TACH_LIMIT_LSB) & 0xFC) | |
255 | | (i2c_smbus_read_byte_data(client, | |
256 | LM63_REG_TACH_LIMIT_MSB) << 8); | |
257 | } | |
258 | ||
259 | data->pwm1_freq = i2c_smbus_read_byte_data(client, | |
260 | LM63_REG_PWM_FREQ); | |
261 | if (data->pwm1_freq == 0) | |
262 | data->pwm1_freq = 1; | |
263 | data->pwm1[0] = i2c_smbus_read_byte_data(client, | |
264 | LM63_REG_PWM_VALUE); | |
265 | ||
266 | data->temp8[0] = i2c_smbus_read_byte_data(client, | |
267 | LM63_REG_LOCAL_TEMP); | |
268 | data->temp8[1] = i2c_smbus_read_byte_data(client, | |
269 | LM63_REG_LOCAL_HIGH); | |
270 | ||
271 | /* order matters for temp2_input */ | |
272 | data->temp11[0] = i2c_smbus_read_byte_data(client, | |
273 | LM63_REG_REMOTE_TEMP_MSB) << 8; | |
274 | data->temp11[0] |= i2c_smbus_read_byte_data(client, | |
275 | LM63_REG_REMOTE_TEMP_LSB); | |
276 | data->temp11[1] = (i2c_smbus_read_byte_data(client, | |
277 | LM63_REG_REMOTE_LOW_MSB) << 8) | |
278 | | i2c_smbus_read_byte_data(client, | |
279 | LM63_REG_REMOTE_LOW_LSB); | |
280 | data->temp11[2] = (i2c_smbus_read_byte_data(client, | |
281 | LM63_REG_REMOTE_HIGH_MSB) << 8) | |
282 | | i2c_smbus_read_byte_data(client, | |
283 | LM63_REG_REMOTE_HIGH_LSB); | |
284 | data->temp11[3] = (i2c_smbus_read_byte_data(client, | |
285 | LM63_REG_REMOTE_OFFSET_MSB) << 8) | |
286 | | i2c_smbus_read_byte_data(client, | |
287 | LM63_REG_REMOTE_OFFSET_LSB); | |
288 | ||
289 | if (data->kind == lm96163) | |
290 | data->temp11u = (i2c_smbus_read_byte_data(client, | |
291 | LM96163_REG_REMOTE_TEMP_U_MSB) << 8) | |
292 | | i2c_smbus_read_byte_data(client, | |
293 | LM96163_REG_REMOTE_TEMP_U_LSB); | |
294 | ||
295 | data->temp8[2] = i2c_smbus_read_byte_data(client, | |
296 | LM63_REG_REMOTE_TCRIT); | |
297 | data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, | |
298 | LM63_REG_REMOTE_TCRIT_HYST); | |
299 | ||
300 | data->alarms = i2c_smbus_read_byte_data(client, | |
301 | LM63_REG_ALERT_STATUS) & 0x7F; | |
302 | ||
303 | data->last_updated = jiffies; | |
304 | data->valid = 1; | |
305 | } | |
306 | ||
e19eea84 | 307 | lm63_update_lut(data); |
dac27dce JD |
308 | |
309 | mutex_unlock(&data->update_lock); | |
310 | ||
311 | return data; | |
312 | } | |
313 | ||
817c6cc5 JD |
314 | /* |
315 | * Trip points in the lookup table should be in ascending order for both | |
316 | * temperatures and PWM output values. | |
317 | */ | |
e19eea84 | 318 | static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data) |
817c6cc5 | 319 | { |
817c6cc5 JD |
320 | int i; |
321 | ||
322 | mutex_lock(&data->update_lock); | |
e19eea84 | 323 | lm63_update_lut(data); |
817c6cc5 JD |
324 | |
325 | for (i = 1; i < data->lut_size; i++) { | |
326 | if (data->pwm1[1 + i - 1] > data->pwm1[1 + i] | |
327 | || data->temp8[3 + i - 1] > data->temp8[3 + i]) { | |
e19eea84 | 328 | dev_warn(dev, |
817c6cc5 JD |
329 | "Lookup table doesn't look sane (check entries %d and %d)\n", |
330 | i, i + 1); | |
331 | break; | |
332 | } | |
333 | } | |
334 | mutex_unlock(&data->update_lock); | |
335 | ||
336 | return i == data->lut_size ? 0 : 1; | |
337 | } | |
338 | ||
1da177e4 LT |
339 | /* |
340 | * Sysfs callback functions and files | |
341 | */ | |
342 | ||
bc51ae11 JD |
343 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, |
344 | char *buf) | |
345 | { | |
346 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
347 | struct lm63_data *data = lm63_update_device(dev); | |
348 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); | |
1da177e4 | 349 | } |
1da177e4 | 350 | |
bc51ae11 JD |
351 | static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, |
352 | const char *buf, size_t count) | |
1da177e4 | 353 | { |
e19eea84 GR |
354 | struct lm63_data *data = dev_get_drvdata(dev); |
355 | struct i2c_client *client = data->client; | |
662bda28 GR |
356 | unsigned long val; |
357 | int err; | |
358 | ||
359 | err = kstrtoul(buf, 10, &val); | |
360 | if (err) | |
361 | return err; | |
1da177e4 | 362 | |
9a61bf63 | 363 | mutex_lock(&data->update_lock); |
bc51ae11 | 364 | data->fan[1] = FAN_TO_REG(val); |
1da177e4 | 365 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
bc51ae11 | 366 | data->fan[1] & 0xFF); |
1da177e4 | 367 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
bc51ae11 | 368 | data->fan[1] >> 8); |
9a61bf63 | 369 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
370 | return count; |
371 | } | |
372 | ||
d216f680 | 373 | static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr, |
bc51ae11 | 374 | char *buf) |
1da177e4 | 375 | { |
d216f680 | 376 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 377 | struct lm63_data *data = lm63_update_device(dev); |
d216f680 | 378 | int nr = attr->index; |
210961c4 GR |
379 | int pwm; |
380 | ||
381 | if (data->pwm_highres) | |
d216f680 | 382 | pwm = data->pwm1[nr]; |
210961c4 | 383 | else |
d216f680 JD |
384 | pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ? |
385 | 255 : (data->pwm1[nr] * 255 + data->pwm1_freq) / | |
210961c4 GR |
386 | (2 * data->pwm1_freq); |
387 | ||
388 | return sprintf(buf, "%d\n", pwm); | |
1da177e4 LT |
389 | } |
390 | ||
af2ef4fc | 391 | static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr, |
bc51ae11 | 392 | const char *buf, size_t count) |
1da177e4 | 393 | { |
af2ef4fc | 394 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
e19eea84 GR |
395 | struct lm63_data *data = dev_get_drvdata(dev); |
396 | struct i2c_client *client = data->client; | |
af2ef4fc | 397 | int nr = attr->index; |
1da177e4 | 398 | unsigned long val; |
662bda28 | 399 | int err; |
af2ef4fc | 400 | u8 reg; |
662bda28 | 401 | |
1da177e4 LT |
402 | if (!(data->config_fan & 0x20)) /* register is read-only */ |
403 | return -EPERM; | |
404 | ||
662bda28 GR |
405 | err = kstrtoul(buf, 10, &val); |
406 | if (err) | |
407 | return err; | |
408 | ||
af2ef4fc | 409 | reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE; |
2a844c14 | 410 | val = clamp_val(val, 0, 255); |
af2ef4fc | 411 | |
9a61bf63 | 412 | mutex_lock(&data->update_lock); |
af2ef4fc | 413 | data->pwm1[nr] = data->pwm_highres ? val : |
d216f680 | 414 | (val * data->pwm1_freq * 2 + 127) / 255; |
af2ef4fc | 415 | i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]); |
9a61bf63 | 416 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
417 | return count; |
418 | } | |
419 | ||
662bda28 GR |
420 | static ssize_t show_pwm1_enable(struct device *dev, |
421 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
422 | { |
423 | struct lm63_data *data = lm63_update_device(dev); | |
424 | return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); | |
425 | } | |
426 | ||
817c6cc5 JD |
427 | static ssize_t set_pwm1_enable(struct device *dev, |
428 | struct device_attribute *dummy, | |
429 | const char *buf, size_t count) | |
430 | { | |
e19eea84 GR |
431 | struct lm63_data *data = dev_get_drvdata(dev); |
432 | struct i2c_client *client = data->client; | |
817c6cc5 JD |
433 | unsigned long val; |
434 | int err; | |
435 | ||
436 | err = kstrtoul(buf, 10, &val); | |
437 | if (err) | |
438 | return err; | |
439 | if (val < 1 || val > 2) | |
440 | return -EINVAL; | |
441 | ||
442 | /* | |
443 | * Only let the user switch to automatic mode if the lookup table | |
444 | * looks sane. | |
445 | */ | |
e19eea84 | 446 | if (val == 2 && lm63_lut_looks_bad(dev, data)) |
817c6cc5 JD |
447 | return -EPERM; |
448 | ||
449 | mutex_lock(&data->update_lock); | |
450 | data->config_fan = i2c_smbus_read_byte_data(client, | |
451 | LM63_REG_CONFIG_FAN); | |
452 | if (val == 1) | |
453 | data->config_fan |= 0x20; | |
454 | else | |
455 | data->config_fan &= ~0x20; | |
456 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN, | |
e19eea84 | 457 | data->config_fan); |
817c6cc5 JD |
458 | mutex_unlock(&data->update_lock); |
459 | return count; | |
460 | } | |
461 | ||
2778fb13 DE |
462 | /* |
463 | * There are 8bit registers for both local(temp1) and remote(temp2) sensor. | |
464 | * For remote sensor registers temp2_offset has to be considered, | |
465 | * for local sensor it must not. | |
466 | * So we need separate 8bit accessors for local and remote sensor. | |
467 | */ | |
468 | static ssize_t show_local_temp8(struct device *dev, | |
469 | struct device_attribute *devattr, | |
470 | char *buf) | |
bc51ae11 JD |
471 | { |
472 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
473 | struct lm63_data *data = lm63_update_device(dev); | |
474 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); | |
1da177e4 | 475 | } |
bc51ae11 | 476 | |
2778fb13 DE |
477 | static ssize_t show_remote_temp8(struct device *dev, |
478 | struct device_attribute *devattr, | |
479 | char *buf) | |
480 | { | |
481 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
482 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 483 | return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index) |
2778fb13 DE |
484 | + data->temp2_offset); |
485 | } | |
486 | ||
d216f680 JD |
487 | static ssize_t show_lut_temp(struct device *dev, |
488 | struct device_attribute *devattr, | |
489 | char *buf) | |
490 | { | |
491 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
492 | struct lm63_data *data = lm63_update_device(dev); | |
493 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
494 | + data->temp2_offset); | |
495 | } | |
496 | ||
94e55df4 GR |
497 | static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, |
498 | const char *buf, size_t count) | |
bc51ae11 | 499 | { |
94e55df4 | 500 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
e19eea84 GR |
501 | struct lm63_data *data = dev_get_drvdata(dev); |
502 | struct i2c_client *client = data->client; | |
94e55df4 | 503 | int nr = attr->index; |
662bda28 GR |
504 | long val; |
505 | int err; | |
94e55df4 | 506 | int temp; |
af2ef4fc | 507 | u8 reg; |
662bda28 GR |
508 | |
509 | err = kstrtol(buf, 10, &val); | |
510 | if (err) | |
511 | return err; | |
bc51ae11 | 512 | |
9a61bf63 | 513 | mutex_lock(&data->update_lock); |
af2ef4fc JD |
514 | switch (nr) { |
515 | case 2: | |
516 | reg = LM63_REG_REMOTE_TCRIT; | |
94e55df4 GR |
517 | if (data->remote_unsigned) |
518 | temp = TEMP8U_TO_REG(val - data->temp2_offset); | |
519 | else | |
520 | temp = TEMP8_TO_REG(val - data->temp2_offset); | |
af2ef4fc JD |
521 | break; |
522 | case 1: | |
523 | reg = LM63_REG_LOCAL_HIGH; | |
94e55df4 | 524 | temp = TEMP8_TO_REG(val); |
af2ef4fc JD |
525 | break; |
526 | default: /* lookup table */ | |
527 | reg = LM63_REG_LUT_TEMP(nr - 3); | |
528 | temp = lut_temp_to_reg(data, val); | |
94e55df4 GR |
529 | } |
530 | data->temp8[nr] = temp; | |
531 | i2c_smbus_write_byte_data(client, reg, temp); | |
9a61bf63 | 532 | mutex_unlock(&data->update_lock); |
bc51ae11 | 533 | return count; |
1da177e4 | 534 | } |
bc51ae11 JD |
535 | |
536 | static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, | |
537 | char *buf) | |
538 | { | |
539 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
540 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e GR |
541 | int nr = attr->index; |
542 | int temp; | |
543 | ||
544 | if (!nr) { | |
545 | /* | |
546 | * Use unsigned temperature unless its value is zero. | |
547 | * If it is zero, use signed temperature. | |
548 | */ | |
549 | if (data->temp11u) | |
550 | temp = TEMP11_FROM_REG(data->temp11u); | |
551 | else | |
552 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
553 | } else { | |
554 | if (data->remote_unsigned && nr == 2) | |
555 | temp = TEMP11_FROM_REG((u16)data->temp11[nr]); | |
556 | else | |
557 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
558 | } | |
559 | return sprintf(buf, "%d\n", temp + data->temp2_offset); | |
1da177e4 | 560 | } |
bc51ae11 JD |
561 | |
562 | static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, | |
563 | const char *buf, size_t count) | |
564 | { | |
786375f7 | 565 | static const u8 reg[6] = { |
bc51ae11 JD |
566 | LM63_REG_REMOTE_LOW_MSB, |
567 | LM63_REG_REMOTE_LOW_LSB, | |
568 | LM63_REG_REMOTE_HIGH_MSB, | |
569 | LM63_REG_REMOTE_HIGH_LSB, | |
786375f7 GR |
570 | LM63_REG_REMOTE_OFFSET_MSB, |
571 | LM63_REG_REMOTE_OFFSET_LSB, | |
bc51ae11 JD |
572 | }; |
573 | ||
574 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
e19eea84 GR |
575 | struct lm63_data *data = dev_get_drvdata(dev); |
576 | struct i2c_client *client = data->client; | |
662bda28 GR |
577 | long val; |
578 | int err; | |
bc51ae11 JD |
579 | int nr = attr->index; |
580 | ||
662bda28 GR |
581 | err = kstrtol(buf, 10, &val); |
582 | if (err) | |
583 | return err; | |
584 | ||
9a61bf63 | 585 | mutex_lock(&data->update_lock); |
e872c91e GR |
586 | if (data->remote_unsigned && nr == 2) |
587 | data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset); | |
588 | else | |
589 | data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); | |
590 | ||
bc51ae11 JD |
591 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], |
592 | data->temp11[nr] >> 8); | |
593 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], | |
594 | data->temp11[nr] & 0xff); | |
9a61bf63 | 595 | mutex_unlock(&data->update_lock); |
bc51ae11 | 596 | return count; |
1da177e4 | 597 | } |
1da177e4 | 598 | |
662bda28 GR |
599 | /* |
600 | * Hysteresis register holds a relative value, while we want to present | |
601 | * an absolute to user-space | |
602 | */ | |
603 | static ssize_t show_temp2_crit_hyst(struct device *dev, | |
604 | struct device_attribute *dummy, char *buf) | |
1da177e4 LT |
605 | { |
606 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 607 | return sprintf(buf, "%d\n", temp8_from_reg(data, 2) |
2778fb13 | 608 | + data->temp2_offset |
1da177e4 LT |
609 | - TEMP8_FROM_REG(data->temp2_crit_hyst)); |
610 | } | |
611 | ||
d216f680 JD |
612 | static ssize_t show_lut_temp_hyst(struct device *dev, |
613 | struct device_attribute *devattr, char *buf) | |
614 | { | |
615 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
616 | struct lm63_data *data = lm63_update_device(dev); | |
617 | ||
618 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
619 | + data->temp2_offset | |
620 | - TEMP8_FROM_REG(data->lut_temp_hyst)); | |
621 | } | |
622 | ||
662bda28 GR |
623 | /* |
624 | * And now the other way around, user-space provides an absolute | |
625 | * hysteresis value and we have to store a relative one | |
626 | */ | |
627 | static ssize_t set_temp2_crit_hyst(struct device *dev, | |
628 | struct device_attribute *dummy, | |
bc51ae11 | 629 | const char *buf, size_t count) |
1da177e4 | 630 | { |
e19eea84 GR |
631 | struct lm63_data *data = dev_get_drvdata(dev); |
632 | struct i2c_client *client = data->client; | |
662bda28 GR |
633 | long val; |
634 | int err; | |
1da177e4 LT |
635 | long hyst; |
636 | ||
662bda28 GR |
637 | err = kstrtol(buf, 10, &val); |
638 | if (err) | |
639 | return err; | |
640 | ||
9a61bf63 | 641 | mutex_lock(&data->update_lock); |
e872c91e | 642 | hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; |
1da177e4 LT |
643 | i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, |
644 | HYST_TO_REG(hyst)); | |
9a61bf63 | 645 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
646 | return count; |
647 | } | |
648 | ||
04738b2b GR |
649 | /* |
650 | * Set conversion rate. | |
651 | * client->update_lock must be held when calling this function. | |
652 | */ | |
e19eea84 | 653 | static void lm63_set_convrate(struct lm63_data *data, unsigned int interval) |
04738b2b | 654 | { |
e19eea84 | 655 | struct i2c_client *client = data->client; |
04738b2b | 656 | unsigned int update_interval; |
e19eea84 | 657 | int i; |
04738b2b GR |
658 | |
659 | /* Shift calculations to avoid rounding errors */ | |
660 | interval <<= 6; | |
661 | ||
662 | /* find the nearest update rate */ | |
663 | update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000 | |
664 | / data->max_convrate_hz; | |
665 | for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1) | |
666 | if (interval >= update_interval * 3 / 4) | |
667 | break; | |
668 | ||
669 | i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i); | |
670 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i); | |
671 | } | |
672 | ||
673 | static ssize_t show_update_interval(struct device *dev, | |
674 | struct device_attribute *attr, char *buf) | |
675 | { | |
676 | struct lm63_data *data = dev_get_drvdata(dev); | |
677 | ||
678 | return sprintf(buf, "%u\n", data->update_interval); | |
679 | } | |
680 | ||
681 | static ssize_t set_update_interval(struct device *dev, | |
682 | struct device_attribute *attr, | |
683 | const char *buf, size_t count) | |
684 | { | |
e19eea84 | 685 | struct lm63_data *data = dev_get_drvdata(dev); |
04738b2b GR |
686 | unsigned long val; |
687 | int err; | |
688 | ||
689 | err = kstrtoul(buf, 10, &val); | |
690 | if (err) | |
691 | return err; | |
692 | ||
693 | mutex_lock(&data->update_lock); | |
e19eea84 | 694 | lm63_set_convrate(data, clamp_val(val, 0, 100000)); |
04738b2b GR |
695 | mutex_unlock(&data->update_lock); |
696 | ||
697 | return count; | |
698 | } | |
699 | ||
f496b2d4 GR |
700 | static ssize_t show_type(struct device *dev, struct device_attribute *attr, |
701 | char *buf) | |
702 | { | |
e19eea84 | 703 | struct lm63_data *data = dev_get_drvdata(dev); |
f496b2d4 GR |
704 | |
705 | return sprintf(buf, data->trutherm ? "1\n" : "2\n"); | |
706 | } | |
707 | ||
708 | static ssize_t set_type(struct device *dev, struct device_attribute *attr, | |
709 | const char *buf, size_t count) | |
710 | { | |
e19eea84 GR |
711 | struct lm63_data *data = dev_get_drvdata(dev); |
712 | struct i2c_client *client = data->client; | |
f496b2d4 GR |
713 | unsigned long val; |
714 | int ret; | |
715 | u8 reg; | |
716 | ||
717 | ret = kstrtoul(buf, 10, &val); | |
718 | if (ret < 0) | |
719 | return ret; | |
720 | if (val != 1 && val != 2) | |
721 | return -EINVAL; | |
722 | ||
723 | mutex_lock(&data->update_lock); | |
724 | data->trutherm = val == 1; | |
725 | reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02; | |
726 | i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM, | |
727 | reg | (data->trutherm ? 0x02 : 0x00)); | |
728 | data->valid = 0; | |
729 | mutex_unlock(&data->update_lock); | |
730 | ||
731 | return count; | |
732 | } | |
733 | ||
bc51ae11 JD |
734 | static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy, |
735 | char *buf) | |
1da177e4 LT |
736 | { |
737 | struct lm63_data *data = lm63_update_device(dev); | |
738 | return sprintf(buf, "%u\n", data->alarms); | |
739 | } | |
740 | ||
2d45771e JD |
741 | static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, |
742 | char *buf) | |
743 | { | |
744 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
745 | struct lm63_data *data = lm63_update_device(dev); | |
746 | int bitnr = attr->index; | |
747 | ||
748 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
749 | } | |
750 | ||
bc51ae11 JD |
751 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
752 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, | |
753 | set_fan, 1); | |
1da177e4 | 754 | |
d216f680 | 755 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0); |
817c6cc5 JD |
756 | static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, |
757 | show_pwm1_enable, set_pwm1_enable); | |
af2ef4fc JD |
758 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, |
759 | show_pwm1, set_pwm1, 1); | |
760 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, | |
761 | show_lut_temp, set_temp8, 3); | |
d216f680 JD |
762 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO, |
763 | show_lut_temp_hyst, NULL, 3); | |
af2ef4fc JD |
764 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, |
765 | show_pwm1, set_pwm1, 2); | |
766 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO, | |
767 | show_lut_temp, set_temp8, 4); | |
d216f680 JD |
768 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO, |
769 | show_lut_temp_hyst, NULL, 4); | |
af2ef4fc JD |
770 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO, |
771 | show_pwm1, set_pwm1, 3); | |
772 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO, | |
773 | show_lut_temp, set_temp8, 5); | |
d216f680 JD |
774 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO, |
775 | show_lut_temp_hyst, NULL, 5); | |
af2ef4fc JD |
776 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO, |
777 | show_pwm1, set_pwm1, 4); | |
778 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO, | |
779 | show_lut_temp, set_temp8, 6); | |
d216f680 JD |
780 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO, |
781 | show_lut_temp_hyst, NULL, 6); | |
af2ef4fc JD |
782 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO, |
783 | show_pwm1, set_pwm1, 5); | |
784 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO, | |
785 | show_lut_temp, set_temp8, 7); | |
d216f680 JD |
786 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO, |
787 | show_lut_temp_hyst, NULL, 7); | |
af2ef4fc JD |
788 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO, |
789 | show_pwm1, set_pwm1, 6); | |
790 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO, | |
791 | show_lut_temp, set_temp8, 8); | |
d216f680 JD |
792 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO, |
793 | show_lut_temp_hyst, NULL, 8); | |
af2ef4fc JD |
794 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO, |
795 | show_pwm1, set_pwm1, 7); | |
796 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO, | |
797 | show_lut_temp, set_temp8, 9); | |
d216f680 JD |
798 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO, |
799 | show_lut_temp_hyst, NULL, 9); | |
af2ef4fc JD |
800 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO, |
801 | show_pwm1, set_pwm1, 8); | |
802 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO, | |
803 | show_lut_temp, set_temp8, 10); | |
d216f680 JD |
804 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO, |
805 | show_lut_temp_hyst, NULL, 10); | |
af2ef4fc JD |
806 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO, |
807 | show_pwm1, set_pwm1, 9); | |
808 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO, | |
809 | show_lut_temp, set_temp8, 11); | |
2fe28ab5 JD |
810 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO, |
811 | show_lut_temp_hyst, NULL, 11); | |
af2ef4fc JD |
812 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO, |
813 | show_pwm1, set_pwm1, 10); | |
814 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO, | |
815 | show_lut_temp, set_temp8, 12); | |
2fe28ab5 JD |
816 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO, |
817 | show_lut_temp_hyst, NULL, 12); | |
af2ef4fc JD |
818 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO, |
819 | show_pwm1, set_pwm1, 11); | |
820 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO, | |
821 | show_lut_temp, set_temp8, 13); | |
2fe28ab5 JD |
822 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO, |
823 | show_lut_temp_hyst, NULL, 13); | |
af2ef4fc JD |
824 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO, |
825 | show_pwm1, set_pwm1, 12); | |
826 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO, | |
827 | show_lut_temp, set_temp8, 14); | |
2fe28ab5 JD |
828 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO, |
829 | show_lut_temp_hyst, NULL, 14); | |
1da177e4 | 830 | |
2778fb13 DE |
831 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); |
832 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, | |
94e55df4 | 833 | set_temp8, 1); |
1da177e4 | 834 | |
bc51ae11 JD |
835 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); |
836 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, | |
837 | set_temp11, 1); | |
838 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, | |
839 | set_temp11, 2); | |
786375f7 GR |
840 | static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, |
841 | set_temp11, 3); | |
2778fb13 | 842 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, |
94e55df4 | 843 | set_temp8, 2); |
1da177e4 LT |
844 | static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst, |
845 | set_temp2_crit_hyst); | |
846 | ||
f496b2d4 GR |
847 | static DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type); |
848 | ||
2d45771e JD |
849 | /* Individual alarm files */ |
850 | static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); | |
851 | static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); | |
7817a39e | 852 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); |
2d45771e JD |
853 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); |
854 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); | |
855 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); | |
856 | /* Raw alarm file for compatibility */ | |
1da177e4 LT |
857 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
858 | ||
04738b2b GR |
859 | static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval, |
860 | set_update_interval); | |
861 | ||
0e39e01c | 862 | static struct attribute *lm63_attributes[] = { |
d216f680 | 863 | &sensor_dev_attr_pwm1.dev_attr.attr, |
0e39e01c | 864 | &dev_attr_pwm1_enable.attr, |
d216f680 JD |
865 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
866 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, | |
867 | &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, | |
868 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
869 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, | |
870 | &sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr, | |
871 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
872 | &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, | |
873 | &sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr, | |
874 | &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, | |
875 | &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, | |
876 | &sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr, | |
877 | &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, | |
878 | &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, | |
879 | &sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr, | |
880 | &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr, | |
881 | &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr, | |
882 | &sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr, | |
883 | &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr, | |
884 | &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr, | |
885 | &sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr, | |
886 | &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr, | |
887 | &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr, | |
888 | &sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr, | |
889 | ||
0e39e01c JD |
890 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
891 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
892 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
893 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
894 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
786375f7 | 895 | &sensor_dev_attr_temp2_offset.dev_attr.attr, |
0e39e01c JD |
896 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
897 | &dev_attr_temp2_crit_hyst.attr, | |
898 | ||
899 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
7817a39e | 900 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
0e39e01c JD |
901 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
902 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
903 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
904 | &dev_attr_alarms.attr, | |
04738b2b | 905 | &dev_attr_update_interval.attr, |
0e39e01c JD |
906 | NULL |
907 | }; | |
908 | ||
0dcb28a1 GR |
909 | static struct attribute *lm63_attributes_temp2_type[] = { |
910 | &dev_attr_temp2_type.attr, | |
911 | NULL | |
912 | }; | |
913 | ||
914 | static const struct attribute_group lm63_group_temp2_type = { | |
915 | .attrs = lm63_attributes_temp2_type, | |
916 | }; | |
917 | ||
2fe28ab5 JD |
918 | static struct attribute *lm63_attributes_extra_lut[] = { |
919 | &sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr, | |
920 | &sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr, | |
921 | &sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr, | |
922 | &sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr, | |
923 | &sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr, | |
924 | &sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr, | |
925 | &sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr, | |
926 | &sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr, | |
927 | &sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr, | |
928 | &sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr, | |
929 | &sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr, | |
930 | &sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr, | |
931 | NULL | |
932 | }; | |
933 | ||
934 | static const struct attribute_group lm63_group_extra_lut = { | |
935 | .attrs = lm63_attributes_extra_lut, | |
936 | }; | |
937 | ||
94e55df4 GR |
938 | /* |
939 | * On LM63, temp2_crit can be set only once, which should be job | |
940 | * of the bootloader. | |
941 | * On LM64, temp2_crit can always be set. | |
942 | * On LM96163, temp2_crit can be set if bit 1 of the configuration | |
943 | * register is true. | |
944 | */ | |
945 | static umode_t lm63_attribute_mode(struct kobject *kobj, | |
946 | struct attribute *attr, int index) | |
947 | { | |
948 | struct device *dev = container_of(kobj, struct device, kobj); | |
e19eea84 | 949 | struct lm63_data *data = dev_get_drvdata(dev); |
94e55df4 GR |
950 | |
951 | if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr | |
952 | && (data->kind == lm64 || | |
953 | (data->kind == lm96163 && (data->config & 0x02)))) | |
954 | return attr->mode | S_IWUSR; | |
955 | ||
956 | return attr->mode; | |
957 | } | |
958 | ||
0e39e01c | 959 | static const struct attribute_group lm63_group = { |
94e55df4 | 960 | .is_visible = lm63_attribute_mode, |
0e39e01c JD |
961 | .attrs = lm63_attributes, |
962 | }; | |
963 | ||
964 | static struct attribute *lm63_attributes_fan1[] = { | |
965 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
966 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
967 | ||
968 | &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, | |
969 | NULL | |
970 | }; | |
971 | ||
972 | static const struct attribute_group lm63_group_fan1 = { | |
973 | .attrs = lm63_attributes_fan1, | |
974 | }; | |
975 | ||
1da177e4 LT |
976 | /* |
977 | * Real code | |
978 | */ | |
979 | ||
d5957be2 | 980 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
dac27dce | 981 | static int lm63_detect(struct i2c_client *client, |
d5957be2 | 982 | struct i2c_board_info *info) |
1da177e4 | 983 | { |
dac27dce | 984 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
985 | u8 man_id, chip_id, reg_config1, reg_config2; |
986 | u8 reg_alert_status, reg_alert_mask; | |
dac27dce | 987 | int address = client->addr; |
1da177e4 LT |
988 | |
989 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
d5957be2 | 990 | return -ENODEV; |
1da177e4 | 991 | |
dac27dce JD |
992 | man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID); |
993 | chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID); | |
52df6440 | 994 | |
dac27dce JD |
995 | reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); |
996 | reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2); | |
997 | reg_alert_status = i2c_smbus_read_byte_data(client, | |
52df6440 | 998 | LM63_REG_ALERT_STATUS); |
dac27dce | 999 | reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK); |
52df6440 JD |
1000 | |
1001 | if (man_id != 0x01 /* National Semiconductor */ | |
52df6440 JD |
1002 | || (reg_config1 & 0x18) != 0x00 |
1003 | || (reg_config2 & 0xF8) != 0x00 | |
1004 | || (reg_alert_status & 0x20) != 0x00 | |
1005 | || (reg_alert_mask & 0xA4) != 0xA4) { | |
1006 | dev_dbg(&adapter->dev, | |
1007 | "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", | |
1008 | man_id, chip_id); | |
1009 | return -ENODEV; | |
1da177e4 LT |
1010 | } |
1011 | ||
10f2ed31 MG |
1012 | if (chip_id == 0x41 && address == 0x4c) |
1013 | strlcpy(info->type, "lm63", I2C_NAME_SIZE); | |
1014 | else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) | |
1015 | strlcpy(info->type, "lm64", I2C_NAME_SIZE); | |
210961c4 GR |
1016 | else if (chip_id == 0x49 && address == 0x4c) |
1017 | strlcpy(info->type, "lm96163", I2C_NAME_SIZE); | |
10f2ed31 MG |
1018 | else |
1019 | return -ENODEV; | |
d5957be2 JD |
1020 | |
1021 | return 0; | |
1022 | } | |
1023 | ||
662bda28 GR |
1024 | /* |
1025 | * Ideally we shouldn't have to initialize anything, since the BIOS | |
1026 | * should have taken care of everything | |
1027 | */ | |
e19eea84 | 1028 | static void lm63_init_client(struct lm63_data *data) |
1da177e4 | 1029 | { |
e19eea84 | 1030 | struct i2c_client *client = data->client; |
2fd638fe | 1031 | struct device *dev = &client->dev; |
04738b2b | 1032 | u8 convrate; |
1da177e4 LT |
1033 | |
1034 | data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); | |
1035 | data->config_fan = i2c_smbus_read_byte_data(client, | |
1036 | LM63_REG_CONFIG_FAN); | |
1037 | ||
1038 | /* Start converting if needed */ | |
1039 | if (data->config & 0x40) { /* standby */ | |
2fd638fe | 1040 | dev_dbg(dev, "Switching to operational mode\n"); |
1da177e4 LT |
1041 | data->config &= 0xA7; |
1042 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, | |
1043 | data->config); | |
1044 | } | |
409c0b5b JD |
1045 | /* Tachometer is always enabled on LM64 */ |
1046 | if (data->kind == lm64) | |
1047 | data->config |= 0x04; | |
1da177e4 LT |
1048 | |
1049 | /* We may need pwm1_freq before ever updating the client data */ | |
1050 | data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); | |
1051 | if (data->pwm1_freq == 0) | |
1052 | data->pwm1_freq = 1; | |
1053 | ||
04738b2b GR |
1054 | switch (data->kind) { |
1055 | case lm63: | |
1056 | case lm64: | |
1057 | data->max_convrate_hz = LM63_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1058 | data->lut_size = 8; |
04738b2b GR |
1059 | break; |
1060 | case lm96163: | |
1061 | data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1062 | data->lut_size = 12; |
f496b2d4 GR |
1063 | data->trutherm |
1064 | = i2c_smbus_read_byte_data(client, | |
1065 | LM96163_REG_TRUTHERM) & 0x02; | |
04738b2b GR |
1066 | break; |
1067 | } | |
1068 | convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE); | |
1069 | if (unlikely(convrate > LM63_MAX_CONVRATE)) | |
1070 | convrate = LM63_MAX_CONVRATE; | |
1071 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, | |
1072 | convrate); | |
1073 | ||
210961c4 | 1074 | /* |
e872c91e GR |
1075 | * For LM96163, check if high resolution PWM |
1076 | * and unsigned temperature format is enabled. | |
210961c4 GR |
1077 | */ |
1078 | if (data->kind == lm96163) { | |
1079 | u8 config_enhanced | |
1080 | = i2c_smbus_read_byte_data(client, | |
1081 | LM96163_REG_CONFIG_ENHANCED); | |
d216f680 JD |
1082 | if (config_enhanced & 0x20) |
1083 | data->lut_temp_highres = true; | |
210961c4 GR |
1084 | if ((config_enhanced & 0x10) |
1085 | && !(data->config_fan & 0x08) && data->pwm1_freq == 8) | |
1086 | data->pwm_highres = true; | |
1087 | if (config_enhanced & 0x08) | |
e872c91e | 1088 | data->remote_unsigned = true; |
210961c4 GR |
1089 | } |
1090 | ||
1da177e4 | 1091 | /* Show some debug info about the LM63 configuration */ |
409c0b5b | 1092 | if (data->kind == lm63) |
2fd638fe | 1093 | dev_dbg(dev, "Alert/tach pin configured for %s\n", |
409c0b5b JD |
1094 | (data->config & 0x04) ? "tachometer input" : |
1095 | "alert output"); | |
2fd638fe | 1096 | dev_dbg(dev, "PWM clock %s kHz, output frequency %u Hz\n", |
1da177e4 LT |
1097 | (data->config_fan & 0x08) ? "1.4" : "360", |
1098 | ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); | |
2fd638fe | 1099 | dev_dbg(dev, "PWM output active %s, %s mode\n", |
1da177e4 LT |
1100 | (data->config_fan & 0x10) ? "low" : "high", |
1101 | (data->config_fan & 0x20) ? "manual" : "auto"); | |
1102 | } | |
1103 | ||
dac27dce JD |
1104 | static int lm63_probe(struct i2c_client *client, |
1105 | const struct i2c_device_id *id) | |
1da177e4 | 1106 | { |
2fd638fe | 1107 | struct device *dev = &client->dev; |
e19eea84 | 1108 | struct device *hwmon_dev; |
dac27dce | 1109 | struct lm63_data *data; |
b76552b3 | 1110 | int groups = 0; |
1da177e4 | 1111 | |
2fd638fe | 1112 | data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL); |
c5a4a91d GR |
1113 | if (!data) |
1114 | return -ENOMEM; | |
dac27dce | 1115 | |
e19eea84 | 1116 | data->client = client; |
dac27dce JD |
1117 | mutex_init(&data->update_lock); |
1118 | ||
1119 | /* Set the device type */ | |
1120 | data->kind = id->driver_data; | |
1121 | if (data->kind == lm64) | |
1122 | data->temp2_offset = 16000; | |
1123 | ||
1124 | /* Initialize chip */ | |
e19eea84 | 1125 | lm63_init_client(data); |
dac27dce JD |
1126 | |
1127 | /* Register sysfs hooks */ | |
b76552b3 GR |
1128 | data->groups[groups++] = &lm63_group; |
1129 | if (data->config & 0x04) /* tachometer enabled */ | |
1130 | data->groups[groups++] = &lm63_group_fan1; | |
dac27dce | 1131 | |
b76552b3 GR |
1132 | if (data->kind == lm96163) { |
1133 | data->groups[groups++] = &lm63_group_temp2_type; | |
1134 | data->groups[groups++] = &lm63_group_extra_lut; | |
dac27dce JD |
1135 | } |
1136 | ||
e19eea84 GR |
1137 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
1138 | data, data->groups); | |
1139 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
dac27dce | 1140 | } |
d216f680 | 1141 | |
dac27dce JD |
1142 | /* |
1143 | * Driver data (common to all clients) | |
1144 | */ | |
d216f680 | 1145 | |
dac27dce JD |
1146 | static const struct i2c_device_id lm63_id[] = { |
1147 | { "lm63", lm63 }, | |
1148 | { "lm64", lm64 }, | |
1149 | { "lm96163", lm96163 }, | |
1150 | { } | |
1151 | }; | |
1152 | MODULE_DEVICE_TABLE(i2c, lm63_id); | |
1da177e4 | 1153 | |
dac27dce JD |
1154 | static struct i2c_driver lm63_driver = { |
1155 | .class = I2C_CLASS_HWMON, | |
1156 | .driver = { | |
1157 | .name = "lm63", | |
1158 | }, | |
1159 | .probe = lm63_probe, | |
dac27dce JD |
1160 | .id_table = lm63_id, |
1161 | .detect = lm63_detect, | |
1162 | .address_list = normal_i2c, | |
1163 | }; | |
1da177e4 | 1164 | |
f0967eea | 1165 | module_i2c_driver(lm63_driver); |
1da177e4 | 1166 | |
7c81c60f | 1167 | MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); |
1da177e4 LT |
1168 | MODULE_DESCRIPTION("LM63 driver"); |
1169 | MODULE_LICENSE("GPL"); |