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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * lm63.c - driver for the National Semiconductor LM63 temperature sensor | |
4 | * with integrated fan control | |
7c81c60f | 5 | * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> |
1da177e4 LT |
6 | * Based on the lm90 driver. |
7 | * | |
8 | * The LM63 is a sensor chip made by National Semiconductor. It measures | |
9 | * two temperatures (its own and one external one) and the speed of one | |
10 | * fan, those speed it can additionally control. Complete datasheet can be | |
11 | * obtained from National's website at: | |
12 | * http://www.national.com/pf/LM/LM63.html | |
13 | * | |
14 | * The LM63 is basically an LM86 with fan speed monitoring and control | |
15 | * capabilities added. It misses some of the LM86 features though: | |
16 | * - No low limit for local temperature. | |
17 | * - No critical limit for local temperature. | |
18 | * - Critical limit for remote temperature can be changed only once. We | |
19 | * will consider that the critical limit is read-only. | |
20 | * | |
21 | * The datasheet isn't very clear about what the tachometer reading is. | |
22 | * I had a explanation from National Semiconductor though. The two lower | |
23 | * bits of the read value have to be masked out. The value is still 16 bit | |
24 | * in width. | |
1da177e4 LT |
25 | */ |
26 | ||
1da177e4 LT |
27 | #include <linux/module.h> |
28 | #include <linux/init.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/jiffies.h> | |
31 | #include <linux/i2c.h> | |
10c08f81 | 32 | #include <linux/hwmon-sysfs.h> |
943b0830 MH |
33 | #include <linux/hwmon.h> |
34 | #include <linux/err.h> | |
9a61bf63 | 35 | #include <linux/mutex.h> |
b25f663b | 36 | #include <linux/of_device.h> |
0e39e01c | 37 | #include <linux/sysfs.h> |
210961c4 | 38 | #include <linux/types.h> |
1da177e4 LT |
39 | |
40 | /* | |
41 | * Addresses to scan | |
d93ab780 JD |
42 | * Address is fully defined internally and cannot be changed except for |
43 | * LM64 which has one pin dedicated to address selection. | |
44 | * LM63 and LM96163 have address 0x4c. | |
45 | * LM64 can have address 0x18 or 0x4e. | |
1da177e4 LT |
46 | */ |
47 | ||
10f2ed31 | 48 | static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END }; |
1da177e4 | 49 | |
1da177e4 LT |
50 | /* |
51 | * The LM63 registers | |
52 | */ | |
53 | ||
54 | #define LM63_REG_CONFIG1 0x03 | |
04738b2b | 55 | #define LM63_REG_CONVRATE 0x04 |
1da177e4 LT |
56 | #define LM63_REG_CONFIG2 0xBF |
57 | #define LM63_REG_CONFIG_FAN 0x4A | |
58 | ||
59 | #define LM63_REG_TACH_COUNT_MSB 0x47 | |
60 | #define LM63_REG_TACH_COUNT_LSB 0x46 | |
61 | #define LM63_REG_TACH_LIMIT_MSB 0x49 | |
62 | #define LM63_REG_TACH_LIMIT_LSB 0x48 | |
63 | ||
64 | #define LM63_REG_PWM_VALUE 0x4C | |
65 | #define LM63_REG_PWM_FREQ 0x4D | |
d216f680 JD |
66 | #define LM63_REG_LUT_TEMP_HYST 0x4F |
67 | #define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr)) | |
68 | #define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr)) | |
1da177e4 LT |
69 | |
70 | #define LM63_REG_LOCAL_TEMP 0x00 | |
71 | #define LM63_REG_LOCAL_HIGH 0x05 | |
72 | ||
73 | #define LM63_REG_REMOTE_TEMP_MSB 0x01 | |
74 | #define LM63_REG_REMOTE_TEMP_LSB 0x10 | |
75 | #define LM63_REG_REMOTE_OFFSET_MSB 0x11 | |
76 | #define LM63_REG_REMOTE_OFFSET_LSB 0x12 | |
77 | #define LM63_REG_REMOTE_HIGH_MSB 0x07 | |
78 | #define LM63_REG_REMOTE_HIGH_LSB 0x13 | |
79 | #define LM63_REG_REMOTE_LOW_MSB 0x08 | |
80 | #define LM63_REG_REMOTE_LOW_LSB 0x14 | |
81 | #define LM63_REG_REMOTE_TCRIT 0x19 | |
82 | #define LM63_REG_REMOTE_TCRIT_HYST 0x21 | |
83 | ||
84 | #define LM63_REG_ALERT_STATUS 0x02 | |
85 | #define LM63_REG_ALERT_MASK 0x16 | |
86 | ||
87 | #define LM63_REG_MAN_ID 0xFE | |
88 | #define LM63_REG_CHIP_ID 0xFF | |
89 | ||
f496b2d4 | 90 | #define LM96163_REG_TRUTHERM 0x30 |
e872c91e GR |
91 | #define LM96163_REG_REMOTE_TEMP_U_MSB 0x31 |
92 | #define LM96163_REG_REMOTE_TEMP_U_LSB 0x32 | |
210961c4 GR |
93 | #define LM96163_REG_CONFIG_ENHANCED 0x45 |
94 | ||
04738b2b GR |
95 | #define LM63_MAX_CONVRATE 9 |
96 | ||
97 | #define LM63_MAX_CONVRATE_HZ 32 | |
98 | #define LM96163_MAX_CONVRATE_HZ 26 | |
99 | ||
1da177e4 LT |
100 | /* |
101 | * Conversions and various macros | |
102 | * For tachometer counts, the LM63 uses 16-bit values. | |
103 | * For local temperature and high limit, remote critical limit and hysteresis | |
44bbe87e | 104 | * value, it uses signed 8-bit values with LSB = 1 degree Celsius. |
1da177e4 | 105 | * For remote temperature, low and high limits, it uses signed 11-bit values |
44bbe87e | 106 | * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers. |
2778fb13 DE |
107 | * For LM64 the actual remote diode temperature is 16 degree Celsius higher |
108 | * than the register reading. Remote temperature setpoints have to be | |
109 | * adapted accordingly. | |
1da177e4 LT |
110 | */ |
111 | ||
112 | #define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \ | |
113 | 5400000 / (reg)) | |
114 | #define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \ | |
115 | (5400000 / (val)) & 0xFFFC) | |
116 | #define TEMP8_FROM_REG(reg) ((reg) * 1000) | |
7560dc0a GR |
117 | #define TEMP8_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ |
118 | 127000), 1000) | |
119 | #define TEMP8U_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, \ | |
120 | 255000), 1000) | |
1da177e4 | 121 | #define TEMP11_FROM_REG(reg) ((reg) / 32 * 125) |
7560dc0a GR |
122 | #define TEMP11_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \ |
123 | 127875), 125) * 32) | |
124 | #define TEMP11U_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), 0, \ | |
125 | 255875), 125) * 32) | |
126 | #define HYST_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \ | |
127 | 1000) | |
1da177e4 | 128 | |
04738b2b GR |
129 | #define UPDATE_INTERVAL(max, rate) \ |
130 | ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max)) | |
131 | ||
210961c4 | 132 | enum chips { lm63, lm64, lm96163 }; |
10f2ed31 | 133 | |
1da177e4 LT |
134 | /* |
135 | * Client data (each client gets its own) | |
136 | */ | |
137 | ||
138 | struct lm63_data { | |
e19eea84 | 139 | struct i2c_client *client; |
9a61bf63 | 140 | struct mutex update_lock; |
b76552b3 | 141 | const struct attribute_group *groups[5]; |
1da177e4 | 142 | char valid; /* zero until following fields are valid */ |
d216f680 | 143 | char lut_valid; /* zero until lut fields are valid */ |
1da177e4 | 144 | unsigned long last_updated; /* in jiffies */ |
d216f680 | 145 | unsigned long lut_last_updated; /* in jiffies */ |
04738b2b | 146 | enum chips kind; |
2778fb13 | 147 | int temp2_offset; |
1da177e4 | 148 | |
04738b2b GR |
149 | int update_interval; /* in milliseconds */ |
150 | int max_convrate_hz; | |
2fe28ab5 | 151 | int lut_size; /* 8 or 12 */ |
04738b2b | 152 | |
1da177e4 LT |
153 | /* registers values */ |
154 | u8 config, config_fan; | |
bc51ae11 JD |
155 | u16 fan[2]; /* 0: input |
156 | 1: low limit */ | |
1da177e4 | 157 | u8 pwm1_freq; |
2fe28ab5 JD |
158 | u8 pwm1[13]; /* 0: current output |
159 | 1-12: lookup table */ | |
160 | s8 temp8[15]; /* 0: local input | |
bc51ae11 | 161 | 1: local high limit |
d216f680 | 162 | 2: remote critical limit |
2fe28ab5 | 163 | 3-14: lookup table */ |
786375f7 | 164 | s16 temp11[4]; /* 0: remote input |
bc51ae11 | 165 | 1: remote low limit |
786375f7 GR |
166 | 2: remote high limit |
167 | 3: remote offset */ | |
e872c91e | 168 | u16 temp11u; /* remote input (unsigned) */ |
1da177e4 | 169 | u8 temp2_crit_hyst; |
d216f680 | 170 | u8 lut_temp_hyst; |
1da177e4 | 171 | u8 alarms; |
210961c4 | 172 | bool pwm_highres; |
d216f680 | 173 | bool lut_temp_highres; |
e872c91e | 174 | bool remote_unsigned; /* true if unsigned remote upper limits */ |
f496b2d4 | 175 | bool trutherm; |
1da177e4 LT |
176 | }; |
177 | ||
e872c91e GR |
178 | static inline int temp8_from_reg(struct lm63_data *data, int nr) |
179 | { | |
180 | if (data->remote_unsigned) | |
181 | return TEMP8_FROM_REG((u8)data->temp8[nr]); | |
182 | return TEMP8_FROM_REG(data->temp8[nr]); | |
183 | } | |
184 | ||
d216f680 JD |
185 | static inline int lut_temp_from_reg(struct lm63_data *data, int nr) |
186 | { | |
187 | return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000); | |
188 | } | |
189 | ||
af2ef4fc JD |
190 | static inline int lut_temp_to_reg(struct lm63_data *data, long val) |
191 | { | |
192 | val -= data->temp2_offset; | |
193 | if (data->lut_temp_highres) | |
2a844c14 | 194 | return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500); |
af2ef4fc | 195 | else |
2a844c14 | 196 | return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000); |
af2ef4fc JD |
197 | } |
198 | ||
817c6cc5 JD |
199 | /* |
200 | * Update the lookup table register cache. | |
201 | * client->update_lock must be held when calling this function. | |
202 | */ | |
e19eea84 | 203 | static void lm63_update_lut(struct lm63_data *data) |
817c6cc5 | 204 | { |
e19eea84 | 205 | struct i2c_client *client = data->client; |
817c6cc5 JD |
206 | int i; |
207 | ||
208 | if (time_after(jiffies, data->lut_last_updated + 5 * HZ) || | |
209 | !data->lut_valid) { | |
210 | for (i = 0; i < data->lut_size; i++) { | |
211 | data->pwm1[1 + i] = i2c_smbus_read_byte_data(client, | |
212 | LM63_REG_LUT_PWM(i)); | |
213 | data->temp8[3 + i] = i2c_smbus_read_byte_data(client, | |
214 | LM63_REG_LUT_TEMP(i)); | |
215 | } | |
216 | data->lut_temp_hyst = i2c_smbus_read_byte_data(client, | |
217 | LM63_REG_LUT_TEMP_HYST); | |
218 | ||
219 | data->lut_last_updated = jiffies; | |
220 | data->lut_valid = 1; | |
221 | } | |
222 | } | |
223 | ||
dac27dce JD |
224 | static struct lm63_data *lm63_update_device(struct device *dev) |
225 | { | |
e19eea84 GR |
226 | struct lm63_data *data = dev_get_drvdata(dev); |
227 | struct i2c_client *client = data->client; | |
dac27dce | 228 | unsigned long next_update; |
dac27dce JD |
229 | |
230 | mutex_lock(&data->update_lock); | |
231 | ||
5b0620df JD |
232 | next_update = data->last_updated + |
233 | msecs_to_jiffies(data->update_interval); | |
dac27dce JD |
234 | if (time_after(jiffies, next_update) || !data->valid) { |
235 | if (data->config & 0x04) { /* tachometer enabled */ | |
236 | /* order matters for fan1_input */ | |
237 | data->fan[0] = i2c_smbus_read_byte_data(client, | |
238 | LM63_REG_TACH_COUNT_LSB) & 0xFC; | |
239 | data->fan[0] |= i2c_smbus_read_byte_data(client, | |
240 | LM63_REG_TACH_COUNT_MSB) << 8; | |
241 | data->fan[1] = (i2c_smbus_read_byte_data(client, | |
242 | LM63_REG_TACH_LIMIT_LSB) & 0xFC) | |
243 | | (i2c_smbus_read_byte_data(client, | |
244 | LM63_REG_TACH_LIMIT_MSB) << 8); | |
245 | } | |
246 | ||
247 | data->pwm1_freq = i2c_smbus_read_byte_data(client, | |
248 | LM63_REG_PWM_FREQ); | |
249 | if (data->pwm1_freq == 0) | |
250 | data->pwm1_freq = 1; | |
251 | data->pwm1[0] = i2c_smbus_read_byte_data(client, | |
252 | LM63_REG_PWM_VALUE); | |
253 | ||
254 | data->temp8[0] = i2c_smbus_read_byte_data(client, | |
255 | LM63_REG_LOCAL_TEMP); | |
256 | data->temp8[1] = i2c_smbus_read_byte_data(client, | |
257 | LM63_REG_LOCAL_HIGH); | |
258 | ||
259 | /* order matters for temp2_input */ | |
260 | data->temp11[0] = i2c_smbus_read_byte_data(client, | |
261 | LM63_REG_REMOTE_TEMP_MSB) << 8; | |
262 | data->temp11[0] |= i2c_smbus_read_byte_data(client, | |
263 | LM63_REG_REMOTE_TEMP_LSB); | |
264 | data->temp11[1] = (i2c_smbus_read_byte_data(client, | |
265 | LM63_REG_REMOTE_LOW_MSB) << 8) | |
266 | | i2c_smbus_read_byte_data(client, | |
267 | LM63_REG_REMOTE_LOW_LSB); | |
268 | data->temp11[2] = (i2c_smbus_read_byte_data(client, | |
269 | LM63_REG_REMOTE_HIGH_MSB) << 8) | |
270 | | i2c_smbus_read_byte_data(client, | |
271 | LM63_REG_REMOTE_HIGH_LSB); | |
272 | data->temp11[3] = (i2c_smbus_read_byte_data(client, | |
273 | LM63_REG_REMOTE_OFFSET_MSB) << 8) | |
274 | | i2c_smbus_read_byte_data(client, | |
275 | LM63_REG_REMOTE_OFFSET_LSB); | |
276 | ||
277 | if (data->kind == lm96163) | |
278 | data->temp11u = (i2c_smbus_read_byte_data(client, | |
279 | LM96163_REG_REMOTE_TEMP_U_MSB) << 8) | |
280 | | i2c_smbus_read_byte_data(client, | |
281 | LM96163_REG_REMOTE_TEMP_U_LSB); | |
282 | ||
283 | data->temp8[2] = i2c_smbus_read_byte_data(client, | |
284 | LM63_REG_REMOTE_TCRIT); | |
285 | data->temp2_crit_hyst = i2c_smbus_read_byte_data(client, | |
286 | LM63_REG_REMOTE_TCRIT_HYST); | |
287 | ||
288 | data->alarms = i2c_smbus_read_byte_data(client, | |
289 | LM63_REG_ALERT_STATUS) & 0x7F; | |
290 | ||
291 | data->last_updated = jiffies; | |
292 | data->valid = 1; | |
293 | } | |
294 | ||
e19eea84 | 295 | lm63_update_lut(data); |
dac27dce JD |
296 | |
297 | mutex_unlock(&data->update_lock); | |
298 | ||
299 | return data; | |
300 | } | |
301 | ||
817c6cc5 JD |
302 | /* |
303 | * Trip points in the lookup table should be in ascending order for both | |
304 | * temperatures and PWM output values. | |
305 | */ | |
e19eea84 | 306 | static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data) |
817c6cc5 | 307 | { |
817c6cc5 JD |
308 | int i; |
309 | ||
310 | mutex_lock(&data->update_lock); | |
e19eea84 | 311 | lm63_update_lut(data); |
817c6cc5 JD |
312 | |
313 | for (i = 1; i < data->lut_size; i++) { | |
314 | if (data->pwm1[1 + i - 1] > data->pwm1[1 + i] | |
315 | || data->temp8[3 + i - 1] > data->temp8[3 + i]) { | |
e19eea84 | 316 | dev_warn(dev, |
817c6cc5 JD |
317 | "Lookup table doesn't look sane (check entries %d and %d)\n", |
318 | i, i + 1); | |
319 | break; | |
320 | } | |
321 | } | |
322 | mutex_unlock(&data->update_lock); | |
323 | ||
324 | return i == data->lut_size ? 0 : 1; | |
325 | } | |
326 | ||
1da177e4 LT |
327 | /* |
328 | * Sysfs callback functions and files | |
329 | */ | |
330 | ||
bc51ae11 JD |
331 | static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, |
332 | char *buf) | |
333 | { | |
334 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
335 | struct lm63_data *data = lm63_update_device(dev); | |
336 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index])); | |
1da177e4 | 337 | } |
1da177e4 | 338 | |
bc51ae11 JD |
339 | static ssize_t set_fan(struct device *dev, struct device_attribute *dummy, |
340 | const char *buf, size_t count) | |
1da177e4 | 341 | { |
e19eea84 GR |
342 | struct lm63_data *data = dev_get_drvdata(dev); |
343 | struct i2c_client *client = data->client; | |
662bda28 GR |
344 | unsigned long val; |
345 | int err; | |
346 | ||
347 | err = kstrtoul(buf, 10, &val); | |
348 | if (err) | |
349 | return err; | |
1da177e4 | 350 | |
9a61bf63 | 351 | mutex_lock(&data->update_lock); |
bc51ae11 | 352 | data->fan[1] = FAN_TO_REG(val); |
1da177e4 | 353 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB, |
bc51ae11 | 354 | data->fan[1] & 0xFF); |
1da177e4 | 355 | i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB, |
bc51ae11 | 356 | data->fan[1] >> 8); |
9a61bf63 | 357 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
358 | return count; |
359 | } | |
360 | ||
d216f680 | 361 | static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr, |
bc51ae11 | 362 | char *buf) |
1da177e4 | 363 | { |
d216f680 | 364 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
1da177e4 | 365 | struct lm63_data *data = lm63_update_device(dev); |
d216f680 | 366 | int nr = attr->index; |
210961c4 GR |
367 | int pwm; |
368 | ||
369 | if (data->pwm_highres) | |
d216f680 | 370 | pwm = data->pwm1[nr]; |
210961c4 | 371 | else |
d216f680 JD |
372 | pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ? |
373 | 255 : (data->pwm1[nr] * 255 + data->pwm1_freq) / | |
210961c4 GR |
374 | (2 * data->pwm1_freq); |
375 | ||
376 | return sprintf(buf, "%d\n", pwm); | |
1da177e4 LT |
377 | } |
378 | ||
af2ef4fc | 379 | static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr, |
bc51ae11 | 380 | const char *buf, size_t count) |
1da177e4 | 381 | { |
af2ef4fc | 382 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
e19eea84 GR |
383 | struct lm63_data *data = dev_get_drvdata(dev); |
384 | struct i2c_client *client = data->client; | |
af2ef4fc | 385 | int nr = attr->index; |
1da177e4 | 386 | unsigned long val; |
662bda28 | 387 | int err; |
af2ef4fc | 388 | u8 reg; |
662bda28 | 389 | |
1da177e4 LT |
390 | if (!(data->config_fan & 0x20)) /* register is read-only */ |
391 | return -EPERM; | |
392 | ||
662bda28 GR |
393 | err = kstrtoul(buf, 10, &val); |
394 | if (err) | |
395 | return err; | |
396 | ||
af2ef4fc | 397 | reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE; |
2a844c14 | 398 | val = clamp_val(val, 0, 255); |
af2ef4fc | 399 | |
9a61bf63 | 400 | mutex_lock(&data->update_lock); |
af2ef4fc | 401 | data->pwm1[nr] = data->pwm_highres ? val : |
d216f680 | 402 | (val * data->pwm1_freq * 2 + 127) / 255; |
af2ef4fc | 403 | i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]); |
9a61bf63 | 404 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
405 | return count; |
406 | } | |
407 | ||
dc7a3265 | 408 | static ssize_t pwm1_enable_show(struct device *dev, |
662bda28 | 409 | struct device_attribute *dummy, char *buf) |
1da177e4 LT |
410 | { |
411 | struct lm63_data *data = lm63_update_device(dev); | |
412 | return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2); | |
413 | } | |
414 | ||
dc7a3265 JL |
415 | static ssize_t pwm1_enable_store(struct device *dev, |
416 | struct device_attribute *dummy, | |
417 | const char *buf, size_t count) | |
817c6cc5 | 418 | { |
e19eea84 GR |
419 | struct lm63_data *data = dev_get_drvdata(dev); |
420 | struct i2c_client *client = data->client; | |
817c6cc5 JD |
421 | unsigned long val; |
422 | int err; | |
423 | ||
424 | err = kstrtoul(buf, 10, &val); | |
425 | if (err) | |
426 | return err; | |
427 | if (val < 1 || val > 2) | |
428 | return -EINVAL; | |
429 | ||
430 | /* | |
431 | * Only let the user switch to automatic mode if the lookup table | |
432 | * looks sane. | |
433 | */ | |
e19eea84 | 434 | if (val == 2 && lm63_lut_looks_bad(dev, data)) |
817c6cc5 JD |
435 | return -EPERM; |
436 | ||
437 | mutex_lock(&data->update_lock); | |
438 | data->config_fan = i2c_smbus_read_byte_data(client, | |
439 | LM63_REG_CONFIG_FAN); | |
440 | if (val == 1) | |
441 | data->config_fan |= 0x20; | |
442 | else | |
443 | data->config_fan &= ~0x20; | |
444 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN, | |
e19eea84 | 445 | data->config_fan); |
817c6cc5 JD |
446 | mutex_unlock(&data->update_lock); |
447 | return count; | |
448 | } | |
449 | ||
2778fb13 DE |
450 | /* |
451 | * There are 8bit registers for both local(temp1) and remote(temp2) sensor. | |
452 | * For remote sensor registers temp2_offset has to be considered, | |
453 | * for local sensor it must not. | |
454 | * So we need separate 8bit accessors for local and remote sensor. | |
455 | */ | |
456 | static ssize_t show_local_temp8(struct device *dev, | |
457 | struct device_attribute *devattr, | |
458 | char *buf) | |
bc51ae11 JD |
459 | { |
460 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
461 | struct lm63_data *data = lm63_update_device(dev); | |
462 | return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index])); | |
1da177e4 | 463 | } |
bc51ae11 | 464 | |
2778fb13 DE |
465 | static ssize_t show_remote_temp8(struct device *dev, |
466 | struct device_attribute *devattr, | |
467 | char *buf) | |
468 | { | |
469 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
470 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 471 | return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index) |
2778fb13 DE |
472 | + data->temp2_offset); |
473 | } | |
474 | ||
d216f680 JD |
475 | static ssize_t show_lut_temp(struct device *dev, |
476 | struct device_attribute *devattr, | |
477 | char *buf) | |
478 | { | |
479 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
480 | struct lm63_data *data = lm63_update_device(dev); | |
481 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
482 | + data->temp2_offset); | |
483 | } | |
484 | ||
94e55df4 GR |
485 | static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr, |
486 | const char *buf, size_t count) | |
bc51ae11 | 487 | { |
94e55df4 | 488 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
e19eea84 GR |
489 | struct lm63_data *data = dev_get_drvdata(dev); |
490 | struct i2c_client *client = data->client; | |
94e55df4 | 491 | int nr = attr->index; |
662bda28 GR |
492 | long val; |
493 | int err; | |
94e55df4 | 494 | int temp; |
af2ef4fc | 495 | u8 reg; |
662bda28 GR |
496 | |
497 | err = kstrtol(buf, 10, &val); | |
498 | if (err) | |
499 | return err; | |
bc51ae11 | 500 | |
9a61bf63 | 501 | mutex_lock(&data->update_lock); |
af2ef4fc JD |
502 | switch (nr) { |
503 | case 2: | |
504 | reg = LM63_REG_REMOTE_TCRIT; | |
94e55df4 GR |
505 | if (data->remote_unsigned) |
506 | temp = TEMP8U_TO_REG(val - data->temp2_offset); | |
507 | else | |
508 | temp = TEMP8_TO_REG(val - data->temp2_offset); | |
af2ef4fc JD |
509 | break; |
510 | case 1: | |
511 | reg = LM63_REG_LOCAL_HIGH; | |
94e55df4 | 512 | temp = TEMP8_TO_REG(val); |
af2ef4fc JD |
513 | break; |
514 | default: /* lookup table */ | |
515 | reg = LM63_REG_LUT_TEMP(nr - 3); | |
516 | temp = lut_temp_to_reg(data, val); | |
94e55df4 GR |
517 | } |
518 | data->temp8[nr] = temp; | |
519 | i2c_smbus_write_byte_data(client, reg, temp); | |
9a61bf63 | 520 | mutex_unlock(&data->update_lock); |
bc51ae11 | 521 | return count; |
1da177e4 | 522 | } |
bc51ae11 JD |
523 | |
524 | static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, | |
525 | char *buf) | |
526 | { | |
527 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
528 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e GR |
529 | int nr = attr->index; |
530 | int temp; | |
531 | ||
532 | if (!nr) { | |
533 | /* | |
534 | * Use unsigned temperature unless its value is zero. | |
535 | * If it is zero, use signed temperature. | |
536 | */ | |
537 | if (data->temp11u) | |
538 | temp = TEMP11_FROM_REG(data->temp11u); | |
539 | else | |
540 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
541 | } else { | |
542 | if (data->remote_unsigned && nr == 2) | |
543 | temp = TEMP11_FROM_REG((u16)data->temp11[nr]); | |
544 | else | |
545 | temp = TEMP11_FROM_REG(data->temp11[nr]); | |
546 | } | |
547 | return sprintf(buf, "%d\n", temp + data->temp2_offset); | |
1da177e4 | 548 | } |
bc51ae11 JD |
549 | |
550 | static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr, | |
551 | const char *buf, size_t count) | |
552 | { | |
786375f7 | 553 | static const u8 reg[6] = { |
bc51ae11 JD |
554 | LM63_REG_REMOTE_LOW_MSB, |
555 | LM63_REG_REMOTE_LOW_LSB, | |
556 | LM63_REG_REMOTE_HIGH_MSB, | |
557 | LM63_REG_REMOTE_HIGH_LSB, | |
786375f7 GR |
558 | LM63_REG_REMOTE_OFFSET_MSB, |
559 | LM63_REG_REMOTE_OFFSET_LSB, | |
bc51ae11 JD |
560 | }; |
561 | ||
562 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
e19eea84 GR |
563 | struct lm63_data *data = dev_get_drvdata(dev); |
564 | struct i2c_client *client = data->client; | |
662bda28 GR |
565 | long val; |
566 | int err; | |
bc51ae11 JD |
567 | int nr = attr->index; |
568 | ||
662bda28 GR |
569 | err = kstrtol(buf, 10, &val); |
570 | if (err) | |
571 | return err; | |
572 | ||
9a61bf63 | 573 | mutex_lock(&data->update_lock); |
e872c91e GR |
574 | if (data->remote_unsigned && nr == 2) |
575 | data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset); | |
576 | else | |
577 | data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset); | |
578 | ||
bc51ae11 JD |
579 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2], |
580 | data->temp11[nr] >> 8); | |
581 | i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1], | |
582 | data->temp11[nr] & 0xff); | |
9a61bf63 | 583 | mutex_unlock(&data->update_lock); |
bc51ae11 | 584 | return count; |
1da177e4 | 585 | } |
1da177e4 | 586 | |
662bda28 GR |
587 | /* |
588 | * Hysteresis register holds a relative value, while we want to present | |
589 | * an absolute to user-space | |
590 | */ | |
dc7a3265 | 591 | static ssize_t temp2_crit_hyst_show(struct device *dev, |
662bda28 | 592 | struct device_attribute *dummy, char *buf) |
1da177e4 LT |
593 | { |
594 | struct lm63_data *data = lm63_update_device(dev); | |
e872c91e | 595 | return sprintf(buf, "%d\n", temp8_from_reg(data, 2) |
2778fb13 | 596 | + data->temp2_offset |
1da177e4 LT |
597 | - TEMP8_FROM_REG(data->temp2_crit_hyst)); |
598 | } | |
599 | ||
d216f680 JD |
600 | static ssize_t show_lut_temp_hyst(struct device *dev, |
601 | struct device_attribute *devattr, char *buf) | |
602 | { | |
603 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
604 | struct lm63_data *data = lm63_update_device(dev); | |
605 | ||
606 | return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index) | |
607 | + data->temp2_offset | |
608 | - TEMP8_FROM_REG(data->lut_temp_hyst)); | |
609 | } | |
610 | ||
662bda28 GR |
611 | /* |
612 | * And now the other way around, user-space provides an absolute | |
613 | * hysteresis value and we have to store a relative one | |
614 | */ | |
dc7a3265 JL |
615 | static ssize_t temp2_crit_hyst_store(struct device *dev, |
616 | struct device_attribute *dummy, | |
617 | const char *buf, size_t count) | |
1da177e4 | 618 | { |
e19eea84 GR |
619 | struct lm63_data *data = dev_get_drvdata(dev); |
620 | struct i2c_client *client = data->client; | |
662bda28 GR |
621 | long val; |
622 | int err; | |
1da177e4 LT |
623 | long hyst; |
624 | ||
662bda28 GR |
625 | err = kstrtol(buf, 10, &val); |
626 | if (err) | |
627 | return err; | |
628 | ||
9a61bf63 | 629 | mutex_lock(&data->update_lock); |
e872c91e | 630 | hyst = temp8_from_reg(data, 2) + data->temp2_offset - val; |
1da177e4 LT |
631 | i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST, |
632 | HYST_TO_REG(hyst)); | |
9a61bf63 | 633 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
634 | return count; |
635 | } | |
636 | ||
04738b2b GR |
637 | /* |
638 | * Set conversion rate. | |
639 | * client->update_lock must be held when calling this function. | |
640 | */ | |
e19eea84 | 641 | static void lm63_set_convrate(struct lm63_data *data, unsigned int interval) |
04738b2b | 642 | { |
e19eea84 | 643 | struct i2c_client *client = data->client; |
04738b2b | 644 | unsigned int update_interval; |
e19eea84 | 645 | int i; |
04738b2b GR |
646 | |
647 | /* Shift calculations to avoid rounding errors */ | |
648 | interval <<= 6; | |
649 | ||
650 | /* find the nearest update rate */ | |
651 | update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000 | |
652 | / data->max_convrate_hz; | |
653 | for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1) | |
654 | if (interval >= update_interval * 3 / 4) | |
655 | break; | |
656 | ||
657 | i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i); | |
658 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i); | |
659 | } | |
660 | ||
dc7a3265 | 661 | static ssize_t update_interval_show(struct device *dev, |
04738b2b GR |
662 | struct device_attribute *attr, char *buf) |
663 | { | |
664 | struct lm63_data *data = dev_get_drvdata(dev); | |
665 | ||
666 | return sprintf(buf, "%u\n", data->update_interval); | |
667 | } | |
668 | ||
dc7a3265 JL |
669 | static ssize_t update_interval_store(struct device *dev, |
670 | struct device_attribute *attr, | |
671 | const char *buf, size_t count) | |
04738b2b | 672 | { |
e19eea84 | 673 | struct lm63_data *data = dev_get_drvdata(dev); |
04738b2b GR |
674 | unsigned long val; |
675 | int err; | |
676 | ||
677 | err = kstrtoul(buf, 10, &val); | |
678 | if (err) | |
679 | return err; | |
680 | ||
681 | mutex_lock(&data->update_lock); | |
e19eea84 | 682 | lm63_set_convrate(data, clamp_val(val, 0, 100000)); |
04738b2b GR |
683 | mutex_unlock(&data->update_lock); |
684 | ||
685 | return count; | |
686 | } | |
687 | ||
dc7a3265 JL |
688 | static ssize_t temp2_type_show(struct device *dev, |
689 | struct device_attribute *attr, char *buf) | |
f496b2d4 | 690 | { |
e19eea84 | 691 | struct lm63_data *data = dev_get_drvdata(dev); |
f496b2d4 GR |
692 | |
693 | return sprintf(buf, data->trutherm ? "1\n" : "2\n"); | |
694 | } | |
695 | ||
dc7a3265 JL |
696 | static ssize_t temp2_type_store(struct device *dev, |
697 | struct device_attribute *attr, | |
698 | const char *buf, size_t count) | |
f496b2d4 | 699 | { |
e19eea84 GR |
700 | struct lm63_data *data = dev_get_drvdata(dev); |
701 | struct i2c_client *client = data->client; | |
f496b2d4 GR |
702 | unsigned long val; |
703 | int ret; | |
704 | u8 reg; | |
705 | ||
706 | ret = kstrtoul(buf, 10, &val); | |
707 | if (ret < 0) | |
708 | return ret; | |
709 | if (val != 1 && val != 2) | |
710 | return -EINVAL; | |
711 | ||
712 | mutex_lock(&data->update_lock); | |
713 | data->trutherm = val == 1; | |
714 | reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02; | |
715 | i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM, | |
716 | reg | (data->trutherm ? 0x02 : 0x00)); | |
717 | data->valid = 0; | |
718 | mutex_unlock(&data->update_lock); | |
719 | ||
720 | return count; | |
721 | } | |
722 | ||
dc7a3265 | 723 | static ssize_t alarms_show(struct device *dev, struct device_attribute *dummy, |
bc51ae11 | 724 | char *buf) |
1da177e4 LT |
725 | { |
726 | struct lm63_data *data = lm63_update_device(dev); | |
727 | return sprintf(buf, "%u\n", data->alarms); | |
728 | } | |
729 | ||
2d45771e JD |
730 | static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr, |
731 | char *buf) | |
732 | { | |
733 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
734 | struct lm63_data *data = lm63_update_device(dev); | |
735 | int bitnr = attr->index; | |
736 | ||
737 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
738 | } | |
739 | ||
bc51ae11 JD |
740 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
741 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan, | |
742 | set_fan, 1); | |
1da177e4 | 743 | |
d216f680 | 744 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0); |
dc7a3265 | 745 | static DEVICE_ATTR_RW(pwm1_enable); |
af2ef4fc JD |
746 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, |
747 | show_pwm1, set_pwm1, 1); | |
748 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, | |
749 | show_lut_temp, set_temp8, 3); | |
d216f680 JD |
750 | static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO, |
751 | show_lut_temp_hyst, NULL, 3); | |
af2ef4fc JD |
752 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, |
753 | show_pwm1, set_pwm1, 2); | |
754 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO, | |
755 | show_lut_temp, set_temp8, 4); | |
d216f680 JD |
756 | static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO, |
757 | show_lut_temp_hyst, NULL, 4); | |
af2ef4fc JD |
758 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO, |
759 | show_pwm1, set_pwm1, 3); | |
760 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO, | |
761 | show_lut_temp, set_temp8, 5); | |
d216f680 JD |
762 | static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO, |
763 | show_lut_temp_hyst, NULL, 5); | |
af2ef4fc JD |
764 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO, |
765 | show_pwm1, set_pwm1, 4); | |
766 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO, | |
767 | show_lut_temp, set_temp8, 6); | |
d216f680 JD |
768 | static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO, |
769 | show_lut_temp_hyst, NULL, 6); | |
af2ef4fc JD |
770 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO, |
771 | show_pwm1, set_pwm1, 5); | |
772 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO, | |
773 | show_lut_temp, set_temp8, 7); | |
d216f680 JD |
774 | static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO, |
775 | show_lut_temp_hyst, NULL, 7); | |
af2ef4fc JD |
776 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO, |
777 | show_pwm1, set_pwm1, 6); | |
778 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO, | |
779 | show_lut_temp, set_temp8, 8); | |
d216f680 JD |
780 | static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO, |
781 | show_lut_temp_hyst, NULL, 8); | |
af2ef4fc JD |
782 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO, |
783 | show_pwm1, set_pwm1, 7); | |
784 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO, | |
785 | show_lut_temp, set_temp8, 9); | |
d216f680 JD |
786 | static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO, |
787 | show_lut_temp_hyst, NULL, 9); | |
af2ef4fc JD |
788 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO, |
789 | show_pwm1, set_pwm1, 8); | |
790 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO, | |
791 | show_lut_temp, set_temp8, 10); | |
d216f680 JD |
792 | static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO, |
793 | show_lut_temp_hyst, NULL, 10); | |
af2ef4fc JD |
794 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO, |
795 | show_pwm1, set_pwm1, 9); | |
796 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO, | |
797 | show_lut_temp, set_temp8, 11); | |
2fe28ab5 JD |
798 | static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO, |
799 | show_lut_temp_hyst, NULL, 11); | |
af2ef4fc JD |
800 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO, |
801 | show_pwm1, set_pwm1, 10); | |
802 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO, | |
803 | show_lut_temp, set_temp8, 12); | |
2fe28ab5 JD |
804 | static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO, |
805 | show_lut_temp_hyst, NULL, 12); | |
af2ef4fc JD |
806 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO, |
807 | show_pwm1, set_pwm1, 11); | |
808 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO, | |
809 | show_lut_temp, set_temp8, 13); | |
2fe28ab5 JD |
810 | static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO, |
811 | show_lut_temp_hyst, NULL, 13); | |
af2ef4fc JD |
812 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO, |
813 | show_pwm1, set_pwm1, 12); | |
814 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO, | |
815 | show_lut_temp, set_temp8, 14); | |
2fe28ab5 JD |
816 | static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO, |
817 | show_lut_temp_hyst, NULL, 14); | |
1da177e4 | 818 | |
2778fb13 DE |
819 | static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0); |
820 | static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8, | |
94e55df4 | 821 | set_temp8, 1); |
1da177e4 | 822 | |
bc51ae11 JD |
823 | static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0); |
824 | static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, | |
825 | set_temp11, 1); | |
826 | static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11, | |
827 | set_temp11, 2); | |
786375f7 GR |
828 | static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11, |
829 | set_temp11, 3); | |
2778fb13 | 830 | static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8, |
94e55df4 | 831 | set_temp8, 2); |
dc7a3265 | 832 | static DEVICE_ATTR_RW(temp2_crit_hyst); |
1da177e4 | 833 | |
dc7a3265 | 834 | static DEVICE_ATTR_RW(temp2_type); |
f496b2d4 | 835 | |
2d45771e JD |
836 | /* Individual alarm files */ |
837 | static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0); | |
838 | static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1); | |
7817a39e | 839 | static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2); |
2d45771e JD |
840 | static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3); |
841 | static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4); | |
842 | static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6); | |
843 | /* Raw alarm file for compatibility */ | |
dc7a3265 | 844 | static DEVICE_ATTR_RO(alarms); |
1da177e4 | 845 | |
dc7a3265 | 846 | static DEVICE_ATTR_RW(update_interval); |
04738b2b | 847 | |
0e39e01c | 848 | static struct attribute *lm63_attributes[] = { |
d216f680 | 849 | &sensor_dev_attr_pwm1.dev_attr.attr, |
0e39e01c | 850 | &dev_attr_pwm1_enable.attr, |
d216f680 JD |
851 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
852 | &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, | |
853 | &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, | |
854 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
855 | &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, | |
856 | &sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr, | |
857 | &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, | |
858 | &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, | |
859 | &sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr, | |
860 | &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, | |
861 | &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, | |
862 | &sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr, | |
863 | &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr, | |
864 | &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr, | |
865 | &sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr, | |
866 | &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr, | |
867 | &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr, | |
868 | &sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr, | |
869 | &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr, | |
870 | &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr, | |
871 | &sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr, | |
872 | &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr, | |
873 | &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr, | |
874 | &sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr, | |
875 | ||
0e39e01c JD |
876 | &sensor_dev_attr_temp1_input.dev_attr.attr, |
877 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
878 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
879 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
880 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
786375f7 | 881 | &sensor_dev_attr_temp2_offset.dev_attr.attr, |
0e39e01c JD |
882 | &sensor_dev_attr_temp2_crit.dev_attr.attr, |
883 | &dev_attr_temp2_crit_hyst.attr, | |
884 | ||
885 | &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, | |
7817a39e | 886 | &sensor_dev_attr_temp2_fault.dev_attr.attr, |
0e39e01c JD |
887 | &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
888 | &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, | |
889 | &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, | |
890 | &dev_attr_alarms.attr, | |
04738b2b | 891 | &dev_attr_update_interval.attr, |
0e39e01c JD |
892 | NULL |
893 | }; | |
894 | ||
0dcb28a1 GR |
895 | static struct attribute *lm63_attributes_temp2_type[] = { |
896 | &dev_attr_temp2_type.attr, | |
897 | NULL | |
898 | }; | |
899 | ||
900 | static const struct attribute_group lm63_group_temp2_type = { | |
901 | .attrs = lm63_attributes_temp2_type, | |
902 | }; | |
903 | ||
2fe28ab5 JD |
904 | static struct attribute *lm63_attributes_extra_lut[] = { |
905 | &sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr, | |
906 | &sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr, | |
907 | &sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr, | |
908 | &sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr, | |
909 | &sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr, | |
910 | &sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr, | |
911 | &sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr, | |
912 | &sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr, | |
913 | &sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr, | |
914 | &sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr, | |
915 | &sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr, | |
916 | &sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr, | |
917 | NULL | |
918 | }; | |
919 | ||
920 | static const struct attribute_group lm63_group_extra_lut = { | |
921 | .attrs = lm63_attributes_extra_lut, | |
922 | }; | |
923 | ||
94e55df4 GR |
924 | /* |
925 | * On LM63, temp2_crit can be set only once, which should be job | |
926 | * of the bootloader. | |
927 | * On LM64, temp2_crit can always be set. | |
928 | * On LM96163, temp2_crit can be set if bit 1 of the configuration | |
929 | * register is true. | |
930 | */ | |
931 | static umode_t lm63_attribute_mode(struct kobject *kobj, | |
932 | struct attribute *attr, int index) | |
933 | { | |
9d2227bb | 934 | struct device *dev = kobj_to_dev(kobj); |
e19eea84 | 935 | struct lm63_data *data = dev_get_drvdata(dev); |
94e55df4 GR |
936 | |
937 | if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr | |
938 | && (data->kind == lm64 || | |
939 | (data->kind == lm96163 && (data->config & 0x02)))) | |
940 | return attr->mode | S_IWUSR; | |
941 | ||
942 | return attr->mode; | |
943 | } | |
944 | ||
0e39e01c | 945 | static const struct attribute_group lm63_group = { |
94e55df4 | 946 | .is_visible = lm63_attribute_mode, |
0e39e01c JD |
947 | .attrs = lm63_attributes, |
948 | }; | |
949 | ||
950 | static struct attribute *lm63_attributes_fan1[] = { | |
951 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
952 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
953 | ||
954 | &sensor_dev_attr_fan1_min_alarm.dev_attr.attr, | |
955 | NULL | |
956 | }; | |
957 | ||
958 | static const struct attribute_group lm63_group_fan1 = { | |
959 | .attrs = lm63_attributes_fan1, | |
960 | }; | |
961 | ||
1da177e4 LT |
962 | /* |
963 | * Real code | |
964 | */ | |
965 | ||
d5957be2 | 966 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
dac27dce | 967 | static int lm63_detect(struct i2c_client *client, |
d5957be2 | 968 | struct i2c_board_info *info) |
1da177e4 | 969 | { |
dac27dce | 970 | struct i2c_adapter *adapter = client->adapter; |
52df6440 JD |
971 | u8 man_id, chip_id, reg_config1, reg_config2; |
972 | u8 reg_alert_status, reg_alert_mask; | |
dac27dce | 973 | int address = client->addr; |
1da177e4 LT |
974 | |
975 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
d5957be2 | 976 | return -ENODEV; |
1da177e4 | 977 | |
dac27dce JD |
978 | man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID); |
979 | chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID); | |
52df6440 | 980 | |
dac27dce JD |
981 | reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); |
982 | reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2); | |
983 | reg_alert_status = i2c_smbus_read_byte_data(client, | |
52df6440 | 984 | LM63_REG_ALERT_STATUS); |
dac27dce | 985 | reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK); |
52df6440 JD |
986 | |
987 | if (man_id != 0x01 /* National Semiconductor */ | |
52df6440 JD |
988 | || (reg_config1 & 0x18) != 0x00 |
989 | || (reg_config2 & 0xF8) != 0x00 | |
990 | || (reg_alert_status & 0x20) != 0x00 | |
991 | || (reg_alert_mask & 0xA4) != 0xA4) { | |
992 | dev_dbg(&adapter->dev, | |
993 | "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n", | |
994 | man_id, chip_id); | |
995 | return -ENODEV; | |
1da177e4 LT |
996 | } |
997 | ||
10f2ed31 MG |
998 | if (chip_id == 0x41 && address == 0x4c) |
999 | strlcpy(info->type, "lm63", I2C_NAME_SIZE); | |
1000 | else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e)) | |
1001 | strlcpy(info->type, "lm64", I2C_NAME_SIZE); | |
210961c4 GR |
1002 | else if (chip_id == 0x49 && address == 0x4c) |
1003 | strlcpy(info->type, "lm96163", I2C_NAME_SIZE); | |
10f2ed31 MG |
1004 | else |
1005 | return -ENODEV; | |
d5957be2 JD |
1006 | |
1007 | return 0; | |
1008 | } | |
1009 | ||
662bda28 GR |
1010 | /* |
1011 | * Ideally we shouldn't have to initialize anything, since the BIOS | |
1012 | * should have taken care of everything | |
1013 | */ | |
e19eea84 | 1014 | static void lm63_init_client(struct lm63_data *data) |
1da177e4 | 1015 | { |
e19eea84 | 1016 | struct i2c_client *client = data->client; |
2fd638fe | 1017 | struct device *dev = &client->dev; |
04738b2b | 1018 | u8 convrate; |
1da177e4 LT |
1019 | |
1020 | data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1); | |
1021 | data->config_fan = i2c_smbus_read_byte_data(client, | |
1022 | LM63_REG_CONFIG_FAN); | |
1023 | ||
1024 | /* Start converting if needed */ | |
1025 | if (data->config & 0x40) { /* standby */ | |
2fd638fe | 1026 | dev_dbg(dev, "Switching to operational mode\n"); |
1da177e4 LT |
1027 | data->config &= 0xA7; |
1028 | i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1, | |
1029 | data->config); | |
1030 | } | |
409c0b5b JD |
1031 | /* Tachometer is always enabled on LM64 */ |
1032 | if (data->kind == lm64) | |
1033 | data->config |= 0x04; | |
1da177e4 LT |
1034 | |
1035 | /* We may need pwm1_freq before ever updating the client data */ | |
1036 | data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ); | |
1037 | if (data->pwm1_freq == 0) | |
1038 | data->pwm1_freq = 1; | |
1039 | ||
04738b2b GR |
1040 | switch (data->kind) { |
1041 | case lm63: | |
1042 | case lm64: | |
1043 | data->max_convrate_hz = LM63_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1044 | data->lut_size = 8; |
04738b2b GR |
1045 | break; |
1046 | case lm96163: | |
1047 | data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ; | |
2fe28ab5 | 1048 | data->lut_size = 12; |
f496b2d4 GR |
1049 | data->trutherm |
1050 | = i2c_smbus_read_byte_data(client, | |
1051 | LM96163_REG_TRUTHERM) & 0x02; | |
04738b2b GR |
1052 | break; |
1053 | } | |
1054 | convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE); | |
1055 | if (unlikely(convrate > LM63_MAX_CONVRATE)) | |
1056 | convrate = LM63_MAX_CONVRATE; | |
1057 | data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, | |
1058 | convrate); | |
1059 | ||
210961c4 | 1060 | /* |
e872c91e GR |
1061 | * For LM96163, check if high resolution PWM |
1062 | * and unsigned temperature format is enabled. | |
210961c4 GR |
1063 | */ |
1064 | if (data->kind == lm96163) { | |
1065 | u8 config_enhanced | |
1066 | = i2c_smbus_read_byte_data(client, | |
1067 | LM96163_REG_CONFIG_ENHANCED); | |
d216f680 JD |
1068 | if (config_enhanced & 0x20) |
1069 | data->lut_temp_highres = true; | |
210961c4 GR |
1070 | if ((config_enhanced & 0x10) |
1071 | && !(data->config_fan & 0x08) && data->pwm1_freq == 8) | |
1072 | data->pwm_highres = true; | |
1073 | if (config_enhanced & 0x08) | |
e872c91e | 1074 | data->remote_unsigned = true; |
210961c4 GR |
1075 | } |
1076 | ||
1da177e4 | 1077 | /* Show some debug info about the LM63 configuration */ |
409c0b5b | 1078 | if (data->kind == lm63) |
2fd638fe | 1079 | dev_dbg(dev, "Alert/tach pin configured for %s\n", |
409c0b5b JD |
1080 | (data->config & 0x04) ? "tachometer input" : |
1081 | "alert output"); | |
2fd638fe | 1082 | dev_dbg(dev, "PWM clock %s kHz, output frequency %u Hz\n", |
1da177e4 LT |
1083 | (data->config_fan & 0x08) ? "1.4" : "360", |
1084 | ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq); | |
2fd638fe | 1085 | dev_dbg(dev, "PWM output active %s, %s mode\n", |
1da177e4 LT |
1086 | (data->config_fan & 0x10) ? "low" : "high", |
1087 | (data->config_fan & 0x20) ? "manual" : "auto"); | |
1088 | } | |
1089 | ||
67487038 SK |
1090 | static const struct i2c_device_id lm63_id[]; |
1091 | ||
1092 | static int lm63_probe(struct i2c_client *client) | |
1da177e4 | 1093 | { |
2fd638fe | 1094 | struct device *dev = &client->dev; |
e19eea84 | 1095 | struct device *hwmon_dev; |
dac27dce | 1096 | struct lm63_data *data; |
b76552b3 | 1097 | int groups = 0; |
1da177e4 | 1098 | |
2fd638fe | 1099 | data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL); |
c5a4a91d GR |
1100 | if (!data) |
1101 | return -ENOMEM; | |
dac27dce | 1102 | |
e19eea84 | 1103 | data->client = client; |
dac27dce JD |
1104 | mutex_init(&data->update_lock); |
1105 | ||
1106 | /* Set the device type */ | |
b25f663b JMC |
1107 | if (client->dev.of_node) |
1108 | data->kind = (enum chips)of_device_get_match_data(&client->dev); | |
1109 | else | |
67487038 | 1110 | data->kind = i2c_match_id(lm63_id, client)->driver_data; |
dac27dce JD |
1111 | if (data->kind == lm64) |
1112 | data->temp2_offset = 16000; | |
1113 | ||
1114 | /* Initialize chip */ | |
e19eea84 | 1115 | lm63_init_client(data); |
dac27dce JD |
1116 | |
1117 | /* Register sysfs hooks */ | |
b76552b3 GR |
1118 | data->groups[groups++] = &lm63_group; |
1119 | if (data->config & 0x04) /* tachometer enabled */ | |
1120 | data->groups[groups++] = &lm63_group_fan1; | |
dac27dce | 1121 | |
b76552b3 GR |
1122 | if (data->kind == lm96163) { |
1123 | data->groups[groups++] = &lm63_group_temp2_type; | |
1124 | data->groups[groups++] = &lm63_group_extra_lut; | |
dac27dce JD |
1125 | } |
1126 | ||
e19eea84 GR |
1127 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
1128 | data, data->groups); | |
1129 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
dac27dce | 1130 | } |
d216f680 | 1131 | |
dac27dce JD |
1132 | /* |
1133 | * Driver data (common to all clients) | |
1134 | */ | |
d216f680 | 1135 | |
dac27dce JD |
1136 | static const struct i2c_device_id lm63_id[] = { |
1137 | { "lm63", lm63 }, | |
1138 | { "lm64", lm64 }, | |
1139 | { "lm96163", lm96163 }, | |
1140 | { } | |
1141 | }; | |
1142 | MODULE_DEVICE_TABLE(i2c, lm63_id); | |
1da177e4 | 1143 | |
8c71c7b9 | 1144 | static const struct of_device_id __maybe_unused lm63_of_match[] = { |
b25f663b JMC |
1145 | { |
1146 | .compatible = "national,lm63", | |
1147 | .data = (void *)lm63 | |
1148 | }, | |
1149 | { | |
1150 | .compatible = "national,lm64", | |
1151 | .data = (void *)lm64 | |
1152 | }, | |
1153 | { | |
1154 | .compatible = "national,lm96163", | |
1155 | .data = (void *)lm96163 | |
1156 | }, | |
1157 | { }, | |
1158 | }; | |
1159 | MODULE_DEVICE_TABLE(of, lm63_of_match); | |
1160 | ||
dac27dce JD |
1161 | static struct i2c_driver lm63_driver = { |
1162 | .class = I2C_CLASS_HWMON, | |
1163 | .driver = { | |
1164 | .name = "lm63", | |
b25f663b | 1165 | .of_match_table = of_match_ptr(lm63_of_match), |
dac27dce | 1166 | }, |
67487038 | 1167 | .probe_new = lm63_probe, |
dac27dce JD |
1168 | .id_table = lm63_id, |
1169 | .detect = lm63_detect, | |
1170 | .address_list = normal_i2c, | |
1171 | }; | |
1da177e4 | 1172 | |
f0967eea | 1173 | module_i2c_driver(lm63_driver); |
1da177e4 | 1174 | |
7c81c60f | 1175 | MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); |
1da177e4 LT |
1176 | MODULE_DESCRIPTION("LM63 driver"); |
1177 | MODULE_LICENSE("GPL"); |