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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> |
b25f663b | 49 | #include <linux/of_device.h> |
0e39e01c | 50 | #include <linux/sysfs.h> |
210961c4 | 51 | #include <linux/types.h> |
1da177e4 LT |
52 | |
53 | /* | |
54 | * Addresses to scan | |
d93ab780 JD |
55 | * Address is fully defined internally and cannot be changed except for |
56 | * LM64 which has one pin dedicated to address selection. | |
57 | * LM63 and LM96163 have address 0x4c. | |
58 | * LM64 can have address 0x18 or 0x4e. | |
1da177e4 LT |
59 | */ |
60 | ||
10f2ed31 | 61 | static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; |
1da177e4 | 62 | |
1da177e4 LT |
63 | /* |
64 | * The LM63 registers | |
65 | */ | |
66 | ||
67 | #define LM63_REG_CONFIG1 0x03 | |
04738b2b | 68 | #define LM63_REG_CONVRATE 0x04 |
1da177e4 LT |
69 | #define LM63_REG_CONFIG2 0xBF |
70 | #define LM63_REG_CONFIG_FAN 0x4A | |
71 | ||
72 | #define LM63_REG_TACH_COUNT_MSB 0x47 | |
73 | #define LM63_REG_TACH_COUNT_LSB 0x46 | |
74 | #define LM63_REG_TACH_LIMIT_MSB 0x49 | |
75 | #define LM63_REG_TACH_LIMIT_LSB 0x48 | |
76 | ||
77 | #define LM63_REG_PWM_VALUE 0x4C | |
78 | #define LM63_REG_PWM_FREQ 0x4D | |
d216f680 JD |
79 | #define LM63_REG_LUT_TEMP_HYST 0x4F |
80 | #define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr)) | |
81 | #define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr)) | |
1da177e4 LT |
82 | |
83 | #define LM63_REG_LOCAL_TEMP 0x00 | |
84 | #define LM63_REG_LOCAL_HIGH 0x05 | |
85 | ||
86 | #define LM63_REG_REMOTE_TEMP_MSB 0x01 | |
87 | #define LM63_REG_REMOTE_TEMP_LSB 0x10 | |
88 | #define LM63_REG_REMOTE_OFFSET_MSB 0x11 | |
89 | #define LM63_REG_REMOTE_OFFSET_LSB 0x12 | |
90 | #define LM63_REG_REMOTE_HIGH_MSB 0x07 | |
91 | #define LM63_REG_REMOTE_HIGH_LSB 0x13 | |
92 | #define LM63_REG_REMOTE_LOW_MSB 0x08 | |
93 | #define LM63_REG_REMOTE_LOW_LSB 0x14 | |
94 | #define LM63_REG_REMOTE_TCRIT 0x19 | |
95 | #define LM63_REG_REMOTE_TCRIT_HYST 0x21 | |
96 | ||
97 | #define LM63_REG_ALERT_STATUS 0x02 | |
98 | #define LM63_REG_ALERT_MASK 0x16 | |
99 | ||
100 | #define LM63_REG_MAN_ID 0xFE | |
101 | #define LM63_REG_CHIP_ID 0xFF | |
102 | ||
f496b2d4 | 103 | #define LM96163_REG_TRUTHERM 0x30 |
e872c91e GR |
104 | #define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 |
105 | #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 | |
210961c4 GR |
106 | #define LM96163_REG_CONFIG_ENHANCED 0x45 |
107 | ||
04738b2b GR |
108 | #define LM63_MAX_CONVRATE 9 |
109 | ||
110 | #define LM63_MAX_CONVRATE_HZ 32 | |
111 | #define LM96163_MAX_CONVRATE_HZ 26 | |
112 | ||
1da177e4 LT |
113 | /* |
114 | * Conversions and various macros | |
115 | * For tachometer counts, the LM63 uses 16-bit values. | |
116 | * For local temperature and high limit, remote critical limit and hysteresis | |
44bbe87e | 117 | * value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
1da177e4 | 118 | * For remote temperature, low and high limits, it uses signed 11-bit values |
44bbe87e | 119 | * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
2778fb13 DE |
120 | * For LM64 the actual remote diode temperature is 16 degree Celsius higher |
121 | * than the register reading. Remote temperature setpoints have to be | |
122 | * adapted accordingly. | |
1da177e4 LT |
123 | */ |
124 | ||
125 | #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ | |
126 | 5400000 / (reg)) | |
127 | #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ | |
128 | (5400000 / (val)) & 0xFFFC) | |
129 | #define TEMP8_FROM_REG(reg) ((reg) * 1000) | |
7560dc0a GR |
130 | #define TEMP8_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ |
131 | 127000), 1000) | |
132 | #define TEMP8U_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, \ | |
133 | 255000), 1000) | |
1da177e4 | 134 | #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) |
7560dc0a GR |
135 | #define TEMP11_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ |
136 | 127875), 125) * 32) | |
137 | #define TEMP11U_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), 0, \ | |
138 | 255875), 125) * 32) | |
139 | #define HYST_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \ | |
140 | 1000) | |
1da177e4 | 141 | |
04738b2b GR |
142 | #define UPDATE_INTERVAL(max, rate) \ |
143 | ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max)) | |
144 | ||
210961c4 | 145 | enum chips { lm63, lm64, lm96163 }; |
10f2ed31 | 146 | |
1da177e4 LT |
147 | /* |
148 | * Client data (each client gets its own) | |
149 | */ | |
150 | ||
151 | struct lm63_data { | |
e19eea84 | 152 | struct i2c_client *client; |
9a61bf63 | 153 | struct mutex update_lock; |
b76552b3 | 154 | const struct attribute_group *groups[5]; |
1da177e4 | 155 | char valid; /* zero until following fields are valid */ |
d216f680 | 156 | char lut_valid; /* zero until lut fields are valid */ |
1da177e4 | 157 | unsigned long last_updated; /* in jiffies */ |
d216f680 | 158 | unsigned long lut_last_updated; /* in jiffies */ |
04738b2b | 159 | enum chips kind; |
2778fb13 | 160 | int temp2_offset; |
1da177e4 | 161 | |
04738b2b GR |
162 | int update_interval; /* in milliseconds */ |
163 | int max_convrate_hz; | |
2fe28ab5 | 164 | int lut_size; /* 8 or 12 */ |
04738b2b | 165 | |
1da177e4 LT |
166 | /* registers values */ |
167 | u8 config, config_fan; | |
bc51ae11 JD |
168 | u16 fan[2]; /* 0: input |
169 | 1: low limit */ | |
1da177e4 | 170 | u8 pwm1_freq; |
2fe28ab5 JD |
171 | u8 pwm1[13]; /* 0: current output |
172 | 1-12: lookup table */ | |
173 | s8 temp8[15]; /* 0: local input | |
bc51ae11 | 174 | 1: local high limit |
d216f680 | 175 | 2: remote critical limit |
2fe28ab5 | 176 | 3-14: lookup table */ |
786375f7 | 177 | s16 temp11[4]; /* 0: remote input |
bc51ae11 | 178 | 1: remote low limit |
786375f7 GR |
179 | 2: remote high limit |
180 | 3: remote offset */ | |
e872c91e | 181 | u16 temp11u; /* remote input (unsigned) */ |
1da177e4 | 182 | u8 temp2_crit_hyst; |
d216f680 | 183 | u8 lut_temp_hyst; |
1da177e4 | 184 | u8 alarms; |
210961c4 | 185 | bool pwm_highres; |
d216f680 | 186 | bool lut_temp_highres; |
e872c91e | 187 | bool remote_unsigned; /* true if unsigned remote upper limits */ |
f496b2d4 | 188 | bool trutherm; |
1da177e4 LT |
189 | }; |
190 | ||
e872c91e GR |
191 | static inline int temp8_from_reg(struct lm63_data *data, int nr) |
192 | { | |
193 | if (data->remote_unsigned) | |
194 | return TEMP8_FROM_REG((u8)data->temp8[nr]); | |
195 | return TEMP8_FROM_REG(data->temp8[nr]); | |
196 | } | |
197 | ||
d216f680 JD |
198 | static inline int lut_temp_from_reg(struct lm63_data *data, int nr) |
199 | { | |
200 | return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000); | |
201 | } | |
202 | ||
af2ef4fc JD |
203 | static inline int lut_temp_to_reg(struct lm63_data *data, long val) |
204 | { | |
205 | val -= data->temp2_offset; | |
206 | if (data->lut_temp_highres) | |
2a844c14 | 207 | return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500); |
af2ef4fc | 208 | else |
2a844c14 | 209 | return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000); |
af2ef4fc JD |
210 | } |
211 | ||
817c6cc5 JD |
212 | /* |
213 | * Update the lookup table register cache. | |
214 | * client->update_lock must be held when calling this function. | |
215 | */ | |
e19eea84 | 216 | static void lm63_update_lut(struct lm63_data *data) |
817c6cc5 | 217 | { |
e19eea84 | 218 | struct i2c_client *client = data->client; |
817c6cc5 JD |
219 | int i; |
220 | ||
221 | if (time_after(jiffies, data->lut_last_updated + 5 * HZ) || | |
222 | !data->lut_valid) { | |
223 | for (i = 0; i < data->lut_size; i++) { | |
224 | data->pwm1[1 + i] = i2c_smbus_read_byte_data(client, | |
225 | LM63_REG_LUT_PWM(i)); | |
226 | data->temp8[3 + i] = i2c_smbus_read_byte_data(client, | |
227 | LM63_REG_LUT_TEMP(i)); | |
228 | } | |
229 | data->lut_temp_hyst = i2c_smbus_read_byte_data(client, | |
230 | LM63_REG_LUT_TEMP_HYST); | |
231 | ||
232 | data->lut_last_updated = jiffies; | |
233 | data->lut_valid = 1; | |
234 | } | |
235 | } | |
236 | ||
dac27dce JD |
237 | static struct lm63_data *lm63_update_device(struct device *dev) |
238 | { | |
e19eea84 GR |
239 | struct lm63_data *data = dev_get_drvdata(dev); |
240 | struct i2c_client *client = data->client; | |
dac27dce | 241 | unsigned long next_update; |
dac27dce JD |
242 | |
243 | mutex_lock(&data->update_lock); | |
244 | ||
5b0620df JD |
245 | next_update = data->last_updated + |
246 | msecs_to_jiffies(data->update_interval); | |
dac27dce JD |
247 | if (time_after(jiffies, next_update) || !data->valid) { |
248 | if (data->config & 0x04) { /* tachometer enabled */ | |
249 | /* order matters for fan1_input */ | |
250 | data->fan[0] = i2c_smbus_read_byte_data(client, | |
251 | LM63_REG_TACH_COUNT_LSB) & 0xFC; | |
252 | data->fan[0] |= i2c_smbus_read_byte_data(client, | |
253 | LM63_REG_TACH_COUNT_MSB) << 8; | |
254 | data->fan[1] = (i2c_smbus_read_byte_data(client, | |
255 | LM63_REG_TACH_LIMIT_LSB) & 0xFC) | |
256 | | (i2c_smbus_read_byte_data(client, | |
257 | LM63_REG_TACH_LIMIT_MSB) << 8); | |
258 | } | |
259 | ||
260 | data->pwm1_freq = i2c_smbus_read_byte_data(client, | |
261 | LM63_REG_PWM_FREQ); | |
262 | if (data->pwm1_freq == 0) | |
263 | data->pwm1_freq = 1; | |
264 | data->pwm1[0] = i2c_smbus_read_byte_data(client, | |
265 | LM63_REG_PWM_VALUE); | |
266 | ||
267 | data->temp8[0] = i2c_smbus_read_byte_data(client, | |
268 | LM63_REG_LOCAL_TEMP); | |
269 | data->temp8[1] = i2c_smbus_read_byte_data(client, | |
270 | LM63_REG_LOCAL_HIGH); | |
271 | ||
272 | /* order matters for temp2_input */ | |
273 | data->temp11[0] = i2c_smbus_read_byte_data(client, | |
274 | LM63_REG_REMOTE_TEMP_MSB) << 8; | |
275 | data->temp11[0] |= i2c_smbus_read_byte_data(client, | |
276 | LM63_REG_REMOTE_TEMP_LSB); | |
277 | data->temp11[1] = (i2c_smbus_read_byte_data(client, | |
278 | LM63_REG_REMOTE_LOW_MSB) << 8) | |
279 | | i2c_smbus_read_byte_data(client, | |
280 | LM63_REG_REMOTE_LOW_LSB); | |
281 | data->temp11[2] = (i2c_smbus_read_byte_data(client, | |
282 | LM63_REG_REMOTE_HIGH_MSB) << 8) | |
283 | | i2c_smbus_read_byte_data(client, | |
284 | LM63_REG_REMOTE_HIGH_LSB); | |
285 | data->temp11[3] = (i2c_smbus_read_byte_data(client, | |
286 | LM63_REG_REMOTE_OFFSET_MSB) << 8) | |
287 | | i2c_smbus_read_byte_data(client, | |
288 | LM63_REG_REMOTE_OFFSET_LSB); | |
289 | ||
290 | if (data->kind == lm96163) | |
291 | data->temp11u = (i2c_smbus_read_byte_data(client, | |
292 | LM96163_REG_REMOTE_TEMP_U_MSB) << 8) | |
293 | | i2c_smbus_read_byte_data(client, | |
294 | LM96163_REG_REMOTE_TEMP_U_LSB); | |
295 | ||
296 | data->temp8[2] = i2c_smbus_read_byte_data(client, | |
297 | LM63_REG_REMOTE_TCRIT); | |
298 | data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, | |
299 | LM63_REG_REMOTE_TCRIT_HYST); | |
300 | ||
301 | data->alarms = i2c_smbus_read_byte_data(client, | |
302 | LM63_REG_ALERT_STATUS) & 0x7F; | |
303 | ||
304 | data->last_updated = jiffies; | |
305 | data->valid = 1; | |
306 | } | |
307 | ||
e19eea84 | 308 | lm63_update_lut(data); |
dac27dce JD |
309 | |
310 | mutex_unlock(&data->update_lock); | |
311 | ||
312 | return data; | |
313 | } | |
314 | ||
817c6cc5 JD |
315 | /* |
316 | * Trip points in the lookup table should be in ascending order for both | |
317 | * temperatures and PWM output values. | |
318 | */ | |
e19eea84 | 319 | static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data) |
817c6cc5 | 320 | { |
817c6cc5 JD |
321 | int i; |
322 | ||
323 | mutex_lock(&data->update_lock); | |
e19eea84 | 324 | lm63_update_lut(data); |
817c6cc5 JD |
325 | |
326 | for (i = 1; i < data->lut_size; i++) { | |
327 | if (data->pwm1[1 + i - 1] > data->pwm1[1 + i] | |
328 | || data->temp8[3 + i - 1] > data->temp8[3 + i]) { | |
e19eea84 | 329 | dev_warn(dev, |
817c6cc5 JD |
330 | "Lookup table doesn't look sane (check entries %d and %d)\n", |
331 | i, i + 1); | |
332 | break; | |
333 | } | |
334 | } | |
335 | mutex_unlock(&data->update_lock); | |
336 | ||
337 | return i == data->lut_size ? 0 : 1; | |
338 | } | |
339 | ||
1da177e4 LT |
340 | /* |
341 | * Sysfs callback functions and files | |
342 | */ | |
343 | ||
bc51ae11 JD |
344 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, |
345 | char *buf) | |
346 | { | |
347 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
348 | struct lm63_data *data = lm63_update_device(dev); | |
349 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); | |
1da177e4 | 350 | } |
1da177e4 | 351 | |
bc51ae11 JD |
352 | static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, |
353 | const char *buf, size_t count) | |
1da177e4 | 354 | { |
e19eea84 GR |
355 | struct lm63_data *data = dev_get_drvdata(dev); |
356 | struct i2c_client *client = data->client; | |
662bda28 GR |
357 | unsigned long val; |
358 | int err; | |
359 | ||
360 | err = kstrtoul(buf, 10, &val); | |
361 | if (err) | |
362 | return err; | |
1da177e4 | 363 | |
9a61bf63 | 364 | mutex_lock(&data->update_lock); |
bc51ae11 | 365 | data->fan[1] = FAN_TO_REG(val); |
1da177e4 | 366 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
bc51ae11 | 367 | data->fan[1] & 0xFF); |
1da177e4 | 368 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
bc51ae11 | 369 | data->fan[1] >> 8); |
9a61bf63 | 370 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
371 | return count; |
372 | } | |
373 | ||
d216f680 | 374 | static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr, |
bc51ae11 | 375 | char *buf) |
1da177e4 | 376 | { |
d216f680 | 377 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 378 | struct lm63_data *data = lm63_update_device(dev); |
d216f680 | 379 | int nr = attr->index; |
210961c4 GR |
380 | int pwm; |
381 | ||
382 | if (data->pwm_highres) | |
d216f680 | 383 | pwm = data->pwm1[nr]; |
210961c4 | 384 | else |
d216f680 JD |
385 | pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ? |
386 | 255 : (data->pwm1[nr] * 255 + data->pwm1_freq) / | |
210961c4 GR |
387 | (2 * data->pwm1_freq); |
388 | ||
389 | return sprintf(buf, "%d\n", pwm); | |
1da177e4 LT |
390 | } |
391 | ||
af2ef4fc | 392 | static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr, |
bc51ae11 | 393 | const char *buf, size_t count) |
1da177e4 | 394 | { |
af2ef4fc | 395 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
e19eea84 GR |
396 | struct lm63_data *data = dev_get_drvdata(dev); |
397 | struct i2c_client *client = data->client; | |
af2ef4fc | 398 | int nr = attr->index; |
1da177e4 | 399 | unsigned long val; |
662bda28 | 400 | int err; |
af2ef4fc | 401 | u8 reg; |
662bda28 | 402 | |
1da177e4 LT |
403 | if (!(data->config_fan & 0x20)) /* register is read-only */ |
404 | return -EPERM; | |
405 | ||
662bda28 GR |
406 | err = kstrtoul(buf, 10, &val); |
407 | if (err) | |
408 | return err; | |
409 | ||
af2ef4fc | 410 | reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE; |
2a844c14 | 411 | val = clamp_val(val, 0, 255); |
af2ef4fc | 412 | |
9a61bf63 | 413 | mutex_lock(&data->update_lock); |
af2ef4fc | 414 | data->pwm1[nr] = data->pwm_highres ? val : |
d216f680 | 415 | (val * data->pwm1_freq * 2 + 127) / 255; |
af2ef4fc | 416 | i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]); |
9a61bf63 | 417 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
418 | return count; |
419 | } | |
420 | ||
dc7a3265 | 421 | static ssize_t pwm1_enable_show(struct device *dev, |
662bda28 | 422 | struct device_attribute *dummy, char *buf) |
1da177e4 LT |
423 | { |
424 | struct lm63_data *data = lm63_update_device(dev); | |
425 | return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); | |
426 | } | |
427 | ||
dc7a3265 JL |
428 | static ssize_t pwm1_enable_store(struct device *dev, |
429 | struct device_attribute *dummy, | |
430 | const char *buf, size_t count) | |
817c6cc5 | 431 | { |
e19eea84 GR |
432 | struct lm63_data *data = dev_get_drvdata(dev); |
433 | struct i2c_client *client = data->client; | |
817c6cc5 JD |
434 | unsigned long val; |
435 | int err; | |
436 | ||
437 | err = kstrtoul(buf, 10, &val); | |
438 | if (err) | |
439 | return err; | |
440 | if (val < 1 || val > 2) | |
441 | return -EINVAL; | |
442 | ||
443 | /* | |
444 | * Only let the user switch to automatic mode if the lookup table | |
445 | * looks sane. | |
446 | */ | |
e19eea84 | 447 | if (val == 2 && lm63_lut_looks_bad(dev, data)) |
817c6cc5 JD |
448 | return -EPERM; |
449 | ||
450 | mutex_lock(&data->update_lock); | |
451 | data->config_fan = i2c_smbus_read_byte_data(client, | |
452 | LM63_REG_CONFIG_FAN); | |
453 | if (val == 1) | |
454 | data->config_fan |= 0x20; | |
455 | else | |
456 | data->config_fan &= ~0x20; | |
457 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN, | |
e19eea84 | 458 | data->config_fan); |
817c6cc5 JD |
459 | mutex_unlock(&data->update_lock); |
460 | return count; | |
461 | } | |
462 | ||
2778fb13 DE |
463 | /* |
464 | * There are 8bit registers for both local(temp1) and remote(temp2) sensor. | |
465 | * For remote sensor registers temp2_offset has to be considered, | |
466 | * for local sensor it must not. | |
467 | * So we need separate 8bit accessors for local and remote sensor. | |
468 | */ | |
469 | static ssize_t show_local_temp8(struct device *dev, | |
470 | struct device_attribute *devattr, | |
471 | char *buf) | |
bc51ae11 JD |
472 | { |
473 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
474 | struct lm63_data *data = lm63_update_device(dev); | |
475 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); | |
1da177e4 | 476 | } |
bc51ae11 | 477 | |
2778fb13 DE |
478 | static ssize_t show_remote_temp8(struct device *dev, |
479 | struct device_attribute *devattr, | |
480 | char *buf) | |
481 | { | |
482 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
483 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 484 | return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index) |
2778fb13 DE |
485 | + data->temp2_offset); |
486 | } | |
487 | ||
d216f680 JD |
488 | static ssize_t show_lut_temp(struct device *dev, |
489 | struct device_attribute *devattr, | |
490 | char *buf) | |
491 | { | |
492 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
493 | struct lm63_data *data = lm63_update_device(dev); | |
494 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
495 | + data->temp2_offset); | |
496 | } | |
497 | ||
94e55df4 GR |
498 | static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, |
499 | const char *buf, size_t count) | |
bc51ae11 | 500 | { |
94e55df4 | 501 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
e19eea84 GR |
502 | struct lm63_data *data = dev_get_drvdata(dev); |
503 | struct i2c_client *client = data->client; | |
94e55df4 | 504 | int nr = attr->index; |
662bda28 GR |
505 | long val; |
506 | int err; | |
94e55df4 | 507 | int temp; |
af2ef4fc | 508 | u8 reg; |
662bda28 GR |
509 | |
510 | err = kstrtol(buf, 10, &val); | |
511 | if (err) | |
512 | return err; | |
bc51ae11 | 513 | |
9a61bf63 | 514 | mutex_lock(&data->update_lock); |
af2ef4fc JD |
515 | switch (nr) { |
516 | case 2: | |
517 | reg = LM63_REG_REMOTE_TCRIT; | |
94e55df4 GR |
518 | if (data->remote_unsigned) |
519 | temp = TEMP8U_TO_REG(val - data->temp2_offset); | |
520 | else | |
521 | temp = TEMP8_TO_REG(val - data->temp2_offset); | |
af2ef4fc JD |
522 | break; |
523 | case 1: | |
524 | reg = LM63_REG_LOCAL_HIGH; | |
94e55df4 | 525 | temp = TEMP8_TO_REG(val); |
af2ef4fc JD |
526 | break; |
527 | default: /* lookup table */ | |
528 | reg = LM63_REG_LUT_TEMP(nr - 3); | |
529 | temp = lut_temp_to_reg(data, val); | |
94e55df4 GR |
530 | } |
531 | data->temp8[nr] = temp; | |
532 | i2c_smbus_write_byte_data(client, reg, temp); | |
9a61bf63 | 533 | mutex_unlock(&data->update_lock); |
bc51ae11 | 534 | return count; |
1da177e4 | 535 | } |
bc51ae11 JD |
536 | |
537 | static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, | |
538 | char *buf) | |
539 | { | |
540 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
541 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e GR |
542 | int nr = attr->index; |
543 | int temp; | |
544 | ||
545 | if (!nr) { | |
546 | /* | |
547 | * Use unsigned temperature unless its value is zero. | |
548 | * If it is zero, use signed temperature. | |
549 | */ | |
550 | if (data->temp11u) | |
551 | temp = TEMP11_FROM_REG(data->temp11u); | |
552 | else | |
553 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
554 | } else { | |
555 | if (data->remote_unsigned && nr == 2) | |
556 | temp = TEMP11_FROM_REG((u16)data->temp11[nr]); | |
557 | else | |
558 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
559 | } | |
560 | return sprintf(buf, "%d\n", temp + data->temp2_offset); | |
1da177e4 | 561 | } |
bc51ae11 JD |
562 | |
563 | static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, | |
564 | const char *buf, size_t count) | |
565 | { | |
786375f7 | 566 | static const u8 reg[6] = { |
bc51ae11 JD |
567 | LM63_REG_REMOTE_LOW_MSB, |
568 | LM63_REG_REMOTE_LOW_LSB, | |
569 | LM63_REG_REMOTE_HIGH_MSB, | |
570 | LM63_REG_REMOTE_HIGH_LSB, | |
786375f7 GR |
571 | LM63_REG_REMOTE_OFFSET_MSB, |
572 | LM63_REG_REMOTE_OFFSET_LSB, | |
bc51ae11 JD |
573 | }; |
574 | ||
575 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
e19eea84 GR |
576 | struct lm63_data *data = dev_get_drvdata(dev); |
577 | struct i2c_client *client = data->client; | |
662bda28 GR |
578 | long val; |
579 | int err; | |
bc51ae11 JD |
580 | int nr = attr->index; |
581 | ||
662bda28 GR |
582 | err = kstrtol(buf, 10, &val); |
583 | if (err) | |
584 | return err; | |
585 | ||
9a61bf63 | 586 | mutex_lock(&data->update_lock); |
e872c91e GR |
587 | if (data->remote_unsigned && nr == 2) |
588 | data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset); | |
589 | else | |
590 | data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); | |
591 | ||
bc51ae11 JD |
592 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], |
593 | data->temp11[nr] >> 8); | |
594 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], | |
595 | data->temp11[nr] & 0xff); | |
9a61bf63 | 596 | mutex_unlock(&data->update_lock); |
bc51ae11 | 597 | return count; |
1da177e4 | 598 | } |
1da177e4 | 599 | |
662bda28 GR |
600 | /* |
601 | * Hysteresis register holds a relative value, while we want to present | |
602 | * an absolute to user-space | |
603 | */ | |
dc7a3265 | 604 | static ssize_t temp2_crit_hyst_show(struct device *dev, |
662bda28 | 605 | struct device_attribute *dummy, char *buf) |
1da177e4 LT |
606 | { |
607 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 608 | return sprintf(buf, "%d\n", temp8_from_reg(data, 2) |
2778fb13 | 609 | + data->temp2_offset |
1da177e4 LT |
610 | - TEMP8_FROM_REG(data->temp2_crit_hyst)); |
611 | } | |
612 | ||
d216f680 JD |
613 | static ssize_t show_lut_temp_hyst(struct device *dev, |
614 | struct device_attribute *devattr, char *buf) | |
615 | { | |
616 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
617 | struct lm63_data *data = lm63_update_device(dev); | |
618 | ||
619 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
620 | + data->temp2_offset | |
621 | - TEMP8_FROM_REG(data->lut_temp_hyst)); | |
622 | } | |
623 | ||
662bda28 GR |
624 | /* |
625 | * And now the other way around, user-space provides an absolute | |
626 | * hysteresis value and we have to store a relative one | |
627 | */ | |
dc7a3265 JL |
628 | static ssize_t temp2_crit_hyst_store(struct device *dev, |
629 | struct device_attribute *dummy, | |
630 | const char *buf, size_t count) | |
1da177e4 | 631 | { |
e19eea84 GR |
632 | struct lm63_data *data = dev_get_drvdata(dev); |
633 | struct i2c_client *client = data->client; | |
662bda28 GR |
634 | long val; |
635 | int err; | |
1da177e4 LT |
636 | long hyst; |
637 | ||
662bda28 GR |
638 | err = kstrtol(buf, 10, &val); |
639 | if (err) | |
640 | return err; | |
641 | ||
9a61bf63 | 642 | mutex_lock(&data->update_lock); |
e872c91e | 643 | hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; |
1da177e4 LT |
644 | i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, |
645 | HYST_TO_REG(hyst)); | |
9a61bf63 | 646 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
647 | return count; |
648 | } | |
649 | ||
04738b2b GR |
650 | /* |
651 | * Set conversion rate. | |
652 | * client->update_lock must be held when calling this function. | |
653 | */ | |
e19eea84 | 654 | static void lm63_set_convrate(struct lm63_data *data, unsigned int interval) |
04738b2b | 655 | { |
e19eea84 | 656 | struct i2c_client *client = data->client; |
04738b2b | 657 | unsigned int update_interval; |
e19eea84 | 658 | int i; |
04738b2b GR |
659 | |
660 | /* Shift calculations to avoid rounding errors */ | |
661 | interval <<= 6; | |
662 | ||
663 | /* find the nearest update rate */ | |
664 | update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000 | |
665 | / data->max_convrate_hz; | |
666 | for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1) | |
667 | if (interval >= update_interval * 3 / 4) | |
668 | break; | |
669 | ||
670 | i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i); | |
671 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i); | |
672 | } | |
673 | ||
dc7a3265 | 674 | static ssize_t update_interval_show(struct device *dev, |
04738b2b GR |
675 | struct device_attribute *attr, char *buf) |
676 | { | |
677 | struct lm63_data *data = dev_get_drvdata(dev); | |
678 | ||
679 | return sprintf(buf, "%u\n", data->update_interval); | |
680 | } | |
681 | ||
dc7a3265 JL |
682 | static ssize_t update_interval_store(struct device *dev, |
683 | struct device_attribute *attr, | |
684 | const char *buf, size_t count) | |
04738b2b | 685 | { |
e19eea84 | 686 | struct lm63_data *data = dev_get_drvdata(dev); |
04738b2b GR |
687 | unsigned long val; |
688 | int err; | |
689 | ||
690 | err = kstrtoul(buf, 10, &val); | |
691 | if (err) | |
692 | return err; | |
693 | ||
694 | mutex_lock(&data->update_lock); | |
e19eea84 | 695 | lm63_set_convrate(data, clamp_val(val, 0, 100000)); |
04738b2b GR |
696 | mutex_unlock(&data->update_lock); |
697 | ||
698 | return count; | |
699 | } | |
700 | ||
dc7a3265 JL |
701 | static ssize_t temp2_type_show(struct device *dev, |
702 | struct device_attribute *attr, char *buf) | |
f496b2d4 | 703 | { |
e19eea84 | 704 | struct lm63_data *data = dev_get_drvdata(dev); |
f496b2d4 GR |
705 | |
706 | return sprintf(buf, data->trutherm ? "1\n" : "2\n"); | |
707 | } | |
708 | ||
dc7a3265 JL |
709 | static ssize_t temp2_type_store(struct device *dev, |
710 | struct device_attribute *attr, | |
711 | const char *buf, size_t count) | |
f496b2d4 | 712 | { |
e19eea84 GR |
713 | struct lm63_data *data = dev_get_drvdata(dev); |
714 | struct i2c_client *client = data->client; | |
f496b2d4 GR |
715 | unsigned long val; |
716 | int ret; | |
717 | u8 reg; | |
718 | ||
719 | ret = kstrtoul(buf, 10, &val); | |
720 | if (ret < 0) | |
721 | return ret; | |
722 | if (val != 1 && val != 2) | |
723 | return -EINVAL; | |
724 | ||
725 | mutex_lock(&data->update_lock); | |
726 | data->trutherm = val == 1; | |
727 | reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02; | |
728 | i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM, | |
729 | reg | (data->trutherm ? 0x02 : 0x00)); | |
730 | data->valid = 0; | |
731 | mutex_unlock(&data->update_lock); | |
732 | ||
733 | return count; | |
734 | } | |
735 | ||
dc7a3265 | 736 | static ssize_t alarms_show(struct device *dev, struct device_attribute *dummy, |
bc51ae11 | 737 | char *buf) |
1da177e4 LT |
738 | { |
739 | struct lm63_data *data = lm63_update_device(dev); | |
740 | return sprintf(buf, "%u\n", data->alarms); | |
741 | } | |
742 | ||
2d45771e JD |
743 | static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, |
744 | char *buf) | |
745 | { | |
746 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
747 | struct lm63_data *data = lm63_update_device(dev); | |
748 | int bitnr = attr->index; | |
749 | ||
750 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
751 | } | |
752 | ||
bc51ae11 JD |
753 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
754 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, | |
755 | set_fan, 1); | |
1da177e4 | 756 | |
d216f680 | 757 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0); |
dc7a3265 | 758 | static DEVICE_ATTR_RW(pwm1_enable); |
af2ef4fc JD |
759 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, |
760 | show_pwm1, set_pwm1, 1); | |
761 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, | |
762 | show_lut_temp, set_temp8, 3); | |
d216f680 JD |
763 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO, |
764 | show_lut_temp_hyst, NULL, 3); | |
af2ef4fc JD |
765 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, |
766 | show_pwm1, set_pwm1, 2); | |
767 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO, | |
768 | show_lut_temp, set_temp8, 4); | |
d216f680 JD |
769 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO, |
770 | show_lut_temp_hyst, NULL, 4); | |
af2ef4fc JD |
771 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO, |
772 | show_pwm1, set_pwm1, 3); | |
773 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO, | |
774 | show_lut_temp, set_temp8, 5); | |
d216f680 JD |
775 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO, |
776 | show_lut_temp_hyst, NULL, 5); | |
af2ef4fc JD |
777 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO, |
778 | show_pwm1, set_pwm1, 4); | |
779 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO, | |
780 | show_lut_temp, set_temp8, 6); | |
d216f680 JD |
781 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO, |
782 | show_lut_temp_hyst, NULL, 6); | |
af2ef4fc JD |
783 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO, |
784 | show_pwm1, set_pwm1, 5); | |
785 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO, | |
786 | show_lut_temp, set_temp8, 7); | |
d216f680 JD |
787 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO, |
788 | show_lut_temp_hyst, NULL, 7); | |
af2ef4fc JD |
789 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO, |
790 | show_pwm1, set_pwm1, 6); | |
791 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO, | |
792 | show_lut_temp, set_temp8, 8); | |
d216f680 JD |
793 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO, |
794 | show_lut_temp_hyst, NULL, 8); | |
af2ef4fc JD |
795 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO, |
796 | show_pwm1, set_pwm1, 7); | |
797 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO, | |
798 | show_lut_temp, set_temp8, 9); | |
d216f680 JD |
799 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO, |
800 | show_lut_temp_hyst, NULL, 9); | |
af2ef4fc JD |
801 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO, |
802 | show_pwm1, set_pwm1, 8); | |
803 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO, | |
804 | show_lut_temp, set_temp8, 10); | |
d216f680 JD |
805 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO, |
806 | show_lut_temp_hyst, NULL, 10); | |
af2ef4fc JD |
807 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO, |
808 | show_pwm1, set_pwm1, 9); | |
809 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO, | |
810 | show_lut_temp, set_temp8, 11); | |
2fe28ab5 JD |
811 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO, |
812 | show_lut_temp_hyst, NULL, 11); | |
af2ef4fc JD |
813 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO, |
814 | show_pwm1, set_pwm1, 10); | |
815 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO, | |
816 | show_lut_temp, set_temp8, 12); | |
2fe28ab5 JD |
817 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO, |
818 | show_lut_temp_hyst, NULL, 12); | |
af2ef4fc JD |
819 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO, |
820 | show_pwm1, set_pwm1, 11); | |
821 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO, | |
822 | show_lut_temp, set_temp8, 13); | |
2fe28ab5 JD |
823 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO, |
824 | show_lut_temp_hyst, NULL, 13); | |
af2ef4fc JD |
825 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO, |
826 | show_pwm1, set_pwm1, 12); | |
827 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO, | |
828 | show_lut_temp, set_temp8, 14); | |
2fe28ab5 JD |
829 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO, |
830 | show_lut_temp_hyst, NULL, 14); | |
1da177e4 | 831 | |
2778fb13 DE |
832 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); |
833 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, | |
94e55df4 | 834 | set_temp8, 1); |
1da177e4 | 835 | |
bc51ae11 JD |
836 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); |
837 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, | |
838 | set_temp11, 1); | |
839 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, | |
840 | set_temp11, 2); | |
786375f7 GR |
841 | static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, |
842 | set_temp11, 3); | |
2778fb13 | 843 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, |
94e55df4 | 844 | set_temp8, 2); |
dc7a3265 | 845 | static DEVICE_ATTR_RW(temp2_crit_hyst); |
1da177e4 | 846 | |
dc7a3265 | 847 | static DEVICE_ATTR_RW(temp2_type); |
f496b2d4 | 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 */ | |
dc7a3265 | 857 | static DEVICE_ATTR_RO(alarms); |
1da177e4 | 858 | |
dc7a3265 | 859 | static DEVICE_ATTR_RW(update_interval); |
04738b2b | 860 | |
0e39e01c | 861 | static struct attribute *lm63_attributes[] = { |
d216f680 | 862 | &sensor_dev_attr_pwm1.dev_attr.attr, |
0e39e01c | 863 | &dev_attr_pwm1_enable.attr, |
d216f680 JD |
864 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
865 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, | |
866 | &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, | |
867 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
868 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, | |
869 | &sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr, | |
870 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
871 | &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, | |
872 | &sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr, | |
873 | &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, | |
874 | &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, | |
875 | &sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr, | |
876 | &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, | |
877 | &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, | |
878 | &sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr, | |
879 | &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr, | |
880 | &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr, | |
881 | &sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr, | |
882 | &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr, | |
883 | &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr, | |
884 | &sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr, | |
885 | &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr, | |
886 | &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr, | |
887 | &sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr, | |
888 | ||
0e39e01c JD |
889 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
890 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
891 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
892 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
893 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
786375f7 | 894 | &sensor_dev_attr_temp2_offset.dev_attr.attr, |
0e39e01c JD |
895 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
896 | &dev_attr_temp2_crit_hyst.attr, | |
897 | ||
898 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
7817a39e | 899 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
0e39e01c JD |
900 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
901 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
902 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
903 | &dev_attr_alarms.attr, | |
04738b2b | 904 | &dev_attr_update_interval.attr, |
0e39e01c JD |
905 | NULL |
906 | }; | |
907 | ||
0dcb28a1 GR |
908 | static struct attribute *lm63_attributes_temp2_type[] = { |
909 | &dev_attr_temp2_type.attr, | |
910 | NULL | |
911 | }; | |
912 | ||
913 | static const struct attribute_group lm63_group_temp2_type = { | |
914 | .attrs = lm63_attributes_temp2_type, | |
915 | }; | |
916 | ||
2fe28ab5 JD |
917 | static struct attribute *lm63_attributes_extra_lut[] = { |
918 | &sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr, | |
919 | &sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr, | |
920 | &sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr, | |
921 | &sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr, | |
922 | &sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr, | |
923 | &sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr, | |
924 | &sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr, | |
925 | &sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr, | |
926 | &sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr, | |
927 | &sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr, | |
928 | &sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr, | |
929 | &sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr, | |
930 | NULL | |
931 | }; | |
932 | ||
933 | static const struct attribute_group lm63_group_extra_lut = { | |
934 | .attrs = lm63_attributes_extra_lut, | |
935 | }; | |
936 | ||
94e55df4 GR |
937 | /* |
938 | * On LM63, temp2_crit can be set only once, which should be job | |
939 | * of the bootloader. | |
940 | * On LM64, temp2_crit can always be set. | |
941 | * On LM96163, temp2_crit can be set if bit 1 of the configuration | |
942 | * register is true. | |
943 | */ | |
944 | static umode_t lm63_attribute_mode(struct kobject *kobj, | |
945 | struct attribute *attr, int index) | |
946 | { | |
947 | struct device *dev = container_of(kobj, struct device, kobj); | |
e19eea84 | 948 | struct lm63_data *data = dev_get_drvdata(dev); |
94e55df4 GR |
949 | |
950 | if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr | |
951 | && (data->kind == lm64 || | |
952 | (data->kind == lm96163 && (data->config & 0x02)))) | |
953 | return attr->mode | S_IWUSR; | |
954 | ||
955 | return attr->mode; | |
956 | } | |
957 | ||
0e39e01c | 958 | static const struct attribute_group lm63_group = { |
94e55df4 | 959 | .is_visible = lm63_attribute_mode, |
0e39e01c JD |
960 | .attrs = lm63_attributes, |
961 | }; | |
962 | ||
963 | static struct attribute *lm63_attributes_fan1[] = { | |
964 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
965 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
966 | ||
967 | &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, | |
968 | NULL | |
969 | }; | |
970 | ||
971 | static const struct attribute_group lm63_group_fan1 = { | |
972 | .attrs = lm63_attributes_fan1, | |
973 | }; | |
974 | ||
1da177e4 LT |
975 | /* |
976 | * Real code | |
977 | */ | |
978 | ||
d5957be2 | 979 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
dac27dce | 980 | static int lm63_detect(struct i2c_client *client, |
d5957be2 | 981 | struct i2c_board_info *info) |
1da177e4 | 982 | { |
dac27dce | 983 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
984 | u8 man_id, chip_id, reg_config1, reg_config2; |
985 | u8 reg_alert_status, reg_alert_mask; | |
dac27dce | 986 | int address = client->addr; |
1da177e4 LT |
987 | |
988 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
d5957be2 | 989 | return -ENODEV; |
1da177e4 | 990 | |
dac27dce JD |
991 | man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID); |
992 | chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID); | |
52df6440 | 993 | |
dac27dce JD |
994 | reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); |
995 | reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2); | |
996 | reg_alert_status = i2c_smbus_read_byte_data(client, | |
52df6440 | 997 | LM63_REG_ALERT_STATUS); |
dac27dce | 998 | reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK); |
52df6440 JD |
999 | |
1000 | if (man_id != 0x01 /* National Semiconductor */ | |
52df6440 JD |
1001 | || (reg_config1 & 0x18) != 0x00 |
1002 | || (reg_config2 & 0xF8) != 0x00 | |
1003 | || (reg_alert_status & 0x20) != 0x00 | |
1004 | || (reg_alert_mask & 0xA4) != 0xA4) { | |
1005 | dev_dbg(&adapter->dev, | |
1006 | "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", | |
1007 | man_id, chip_id); | |
1008 | return -ENODEV; | |
1da177e4 LT |
1009 | } |
1010 | ||
10f2ed31 MG |
1011 | if (chip_id == 0x41 && address == 0x4c) |
1012 | strlcpy(info->type, "lm63", I2C_NAME_SIZE); | |
1013 | else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) | |
1014 | strlcpy(info->type, "lm64", I2C_NAME_SIZE); | |
210961c4 GR |
1015 | else if (chip_id == 0x49 && address == 0x4c) |
1016 | strlcpy(info->type, "lm96163", I2C_NAME_SIZE); | |
10f2ed31 MG |
1017 | else |
1018 | return -ENODEV; | |
d5957be2 JD |
1019 | |
1020 | return 0; | |
1021 | } | |
1022 | ||
662bda28 GR |
1023 | /* |
1024 | * Ideally we shouldn't have to initialize anything, since the BIOS | |
1025 | * should have taken care of everything | |
1026 | */ | |
e19eea84 | 1027 | static void lm63_init_client(struct lm63_data *data) |
1da177e4 | 1028 | { |
e19eea84 | 1029 | struct i2c_client *client = data->client; |
2fd638fe | 1030 | struct device *dev = &client->dev; |
04738b2b | 1031 | u8 convrate; |
1da177e4 LT |
1032 | |
1033 | data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); | |
1034 | data->config_fan = i2c_smbus_read_byte_data(client, | |
1035 | LM63_REG_CONFIG_FAN); | |
1036 | ||
1037 | /* Start converting if needed */ | |
1038 | if (data->config & 0x40) { /* standby */ | |
2fd638fe | 1039 | dev_dbg(dev, "Switching to operational mode\n"); |
1da177e4 LT |
1040 | data->config &= 0xA7; |
1041 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, | |
1042 | data->config); | |
1043 | } | |
409c0b5b JD |
1044 | /* Tachometer is always enabled on LM64 */ |
1045 | if (data->kind == lm64) | |
1046 | data->config |= 0x04; | |
1da177e4 LT |
1047 | |
1048 | /* We may need pwm1_freq before ever updating the client data */ | |
1049 | data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); | |
1050 | if (data->pwm1_freq == 0) | |
1051 | data->pwm1_freq = 1; | |
1052 | ||
04738b2b GR |
1053 | switch (data->kind) { |
1054 | case lm63: | |
1055 | case lm64: | |
1056 | data->max_convrate_hz = LM63_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1057 | data->lut_size = 8; |
04738b2b GR |
1058 | break; |
1059 | case lm96163: | |
1060 | data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1061 | data->lut_size = 12; |
f496b2d4 GR |
1062 | data->trutherm |
1063 | = i2c_smbus_read_byte_data(client, | |
1064 | LM96163_REG_TRUTHERM) & 0x02; | |
04738b2b GR |
1065 | break; |
1066 | } | |
1067 | convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE); | |
1068 | if (unlikely(convrate > LM63_MAX_CONVRATE)) | |
1069 | convrate = LM63_MAX_CONVRATE; | |
1070 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, | |
1071 | convrate); | |
1072 | ||
210961c4 | 1073 | /* |
e872c91e GR |
1074 | * For LM96163, check if high resolution PWM |
1075 | * and unsigned temperature format is enabled. | |
210961c4 GR |
1076 | */ |
1077 | if (data->kind == lm96163) { | |
1078 | u8 config_enhanced | |
1079 | = i2c_smbus_read_byte_data(client, | |
1080 | LM96163_REG_CONFIG_ENHANCED); | |
d216f680 JD |
1081 | if (config_enhanced & 0x20) |
1082 | data->lut_temp_highres = true; | |
210961c4 GR |
1083 | if ((config_enhanced & 0x10) |
1084 | && !(data->config_fan & 0x08) && data->pwm1_freq == 8) | |
1085 | data->pwm_highres = true; | |
1086 | if (config_enhanced & 0x08) | |
e872c91e | 1087 | data->remote_unsigned = true; |
210961c4 GR |
1088 | } |
1089 | ||
1da177e4 | 1090 | /* Show some debug info about the LM63 configuration */ |
409c0b5b | 1091 | if (data->kind == lm63) |
2fd638fe | 1092 | dev_dbg(dev, "Alert/tach pin configured for %s\n", |
409c0b5b JD |
1093 | (data->config & 0x04) ? "tachometer input" : |
1094 | "alert output"); | |
2fd638fe | 1095 | dev_dbg(dev, "PWM clock %s kHz, output frequency %u Hz\n", |
1da177e4 LT |
1096 | (data->config_fan & 0x08) ? "1.4" : "360", |
1097 | ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); | |
2fd638fe | 1098 | dev_dbg(dev, "PWM output active %s, %s mode\n", |
1da177e4 LT |
1099 | (data->config_fan & 0x10) ? "low" : "high", |
1100 | (data->config_fan & 0x20) ? "manual" : "auto"); | |
1101 | } | |
1102 | ||
dac27dce JD |
1103 | static int lm63_probe(struct i2c_client *client, |
1104 | const struct i2c_device_id *id) | |
1da177e4 | 1105 | { |
2fd638fe | 1106 | struct device *dev = &client->dev; |
e19eea84 | 1107 | struct device *hwmon_dev; |
dac27dce | 1108 | struct lm63_data *data; |
b76552b3 | 1109 | int groups = 0; |
1da177e4 | 1110 | |
2fd638fe | 1111 | data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL); |
c5a4a91d GR |
1112 | if (!data) |
1113 | return -ENOMEM; | |
dac27dce | 1114 | |
e19eea84 | 1115 | data->client = client; |
dac27dce JD |
1116 | mutex_init(&data->update_lock); |
1117 | ||
1118 | /* Set the device type */ | |
b25f663b JMC |
1119 | if (client->dev.of_node) |
1120 | data->kind = (enum chips)of_device_get_match_data(&client->dev); | |
1121 | else | |
1122 | data->kind = id->driver_data; | |
dac27dce JD |
1123 | data->kind = id->driver_data; |
1124 | if (data->kind == lm64) | |
1125 | data->temp2_offset = 16000; | |
1126 | ||
1127 | /* Initialize chip */ | |
e19eea84 | 1128 | lm63_init_client(data); |
dac27dce JD |
1129 | |
1130 | /* Register sysfs hooks */ | |
b76552b3 GR |
1131 | data->groups[groups++] = &lm63_group; |
1132 | if (data->config & 0x04) /* tachometer enabled */ | |
1133 | data->groups[groups++] = &lm63_group_fan1; | |
dac27dce | 1134 | |
b76552b3 GR |
1135 | if (data->kind == lm96163) { |
1136 | data->groups[groups++] = &lm63_group_temp2_type; | |
1137 | data->groups[groups++] = &lm63_group_extra_lut; | |
dac27dce JD |
1138 | } |
1139 | ||
e19eea84 GR |
1140 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
1141 | data, data->groups); | |
1142 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
dac27dce | 1143 | } |
d216f680 | 1144 | |
dac27dce JD |
1145 | /* |
1146 | * Driver data (common to all clients) | |
1147 | */ | |
d216f680 | 1148 | |
dac27dce JD |
1149 | static const struct i2c_device_id lm63_id[] = { |
1150 | { "lm63", lm63 }, | |
1151 | { "lm64", lm64 }, | |
1152 | { "lm96163", lm96163 }, | |
1153 | { } | |
1154 | }; | |
1155 | MODULE_DEVICE_TABLE(i2c, lm63_id); | |
1da177e4 | 1156 | |
b25f663b JMC |
1157 | static const struct of_device_id lm63_of_match[] = { |
1158 | { | |
1159 | .compatible = "national,lm63", | |
1160 | .data = (void *)lm63 | |
1161 | }, | |
1162 | { | |
1163 | .compatible = "national,lm64", | |
1164 | .data = (void *)lm64 | |
1165 | }, | |
1166 | { | |
1167 | .compatible = "national,lm96163", | |
1168 | .data = (void *)lm96163 | |
1169 | }, | |
1170 | { }, | |
1171 | }; | |
1172 | MODULE_DEVICE_TABLE(of, lm63_of_match); | |
1173 | ||
dac27dce JD |
1174 | static struct i2c_driver lm63_driver = { |
1175 | .class = I2C_CLASS_HWMON, | |
1176 | .driver = { | |
1177 | .name = "lm63", | |
b25f663b | 1178 | .of_match_table = of_match_ptr(lm63_of_match), |
dac27dce JD |
1179 | }, |
1180 | .probe = lm63_probe, | |
dac27dce JD |
1181 | .id_table = lm63_id, |
1182 | .detect = lm63_detect, | |
1183 | .address_list = normal_i2c, | |
1184 | }; | |
1da177e4 | 1185 | |
f0967eea | 1186 | module_i2c_driver(lm63_driver); |
1da177e4 | 1187 | |
7c81c60f | 1188 | MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); |
1da177e4 LT |
1189 | MODULE_DESCRIPTION("LM63 driver"); |
1190 | MODULE_LICENSE("GPL"); |