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m68k: Delete an unnecessary variable assignment in sys_cacheflush()
[linux-2.6/btrfs-unstable.git] / drivers / hwmon / adm1026.c
blobb2a5d9e5c590c724c8ca1957c92314a0d2709157
1 /*
2 * adm1026.c - Part of lm_sensors, Linux kernel modules for hardware
3 * monitoring
4 * Copyright (C) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
5 * Copyright (C) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
6 *
7 * Chip details at:
8 *
9 * <http://www.onsemi.com/PowerSolutions/product.do?id=ADM1026>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/i2c.h>
31 #include <linux/hwmon.h>
32 #include <linux/hwmon-sysfs.h>
33 #include <linux/hwmon-vid.h>
34 #include <linux/err.h>
35 #include <linux/mutex.h>
36
37 /* Addresses to scan */
38 static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
39
40 static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
41 -1, -1, -1, -1, -1, -1, -1, -1 };
42 static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
43 -1, -1, -1, -1, -1, -1, -1, -1 };
44 static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
45 -1, -1, -1, -1, -1, -1, -1, -1 };
46 static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
47 -1, -1, -1, -1, -1, -1, -1, -1 };
48 static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
49 module_param_array(gpio_input, int, NULL, 0);
50 MODULE_PARM_DESC(gpio_input, "List of GPIO pins (0-16) to program as inputs");
51 module_param_array(gpio_output, int, NULL, 0);
52 MODULE_PARM_DESC(gpio_output,
53 "List of GPIO pins (0-16) to program as outputs");
54 module_param_array(gpio_inverted, int, NULL, 0);
55 MODULE_PARM_DESC(gpio_inverted,
56 "List of GPIO pins (0-16) to program as inverted");
57 module_param_array(gpio_normal, int, NULL, 0);
58 MODULE_PARM_DESC(gpio_normal,
59 "List of GPIO pins (0-16) to program as normal/non-inverted");
60 module_param_array(gpio_fan, int, NULL, 0);
61 MODULE_PARM_DESC(gpio_fan, "List of GPIO pins (0-7) to program as fan tachs");
62
63 /* Many ADM1026 constants specified below */
64
65 /* The ADM1026 registers */
66 #define ADM1026_REG_CONFIG1 0x00
67 #define CFG1_MONITOR 0x01
68 #define CFG1_INT_ENABLE 0x02
69 #define CFG1_INT_CLEAR 0x04
70 #define CFG1_AIN8_9 0x08
71 #define CFG1_THERM_HOT 0x10
72 #define CFG1_DAC_AFC 0x20
73 #define CFG1_PWM_AFC 0x40
74 #define CFG1_RESET 0x80
75
76 #define ADM1026_REG_CONFIG2 0x01
77 /* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */
78
79 #define ADM1026_REG_CONFIG3 0x07
80 #define CFG3_GPIO16_ENABLE 0x01
81 #define CFG3_CI_CLEAR 0x02
82 #define CFG3_VREF_250 0x04
83 #define CFG3_GPIO16_DIR 0x40
84 #define CFG3_GPIO16_POL 0x80
85
86 #define ADM1026_REG_E2CONFIG 0x13
87 #define E2CFG_READ 0x01
88 #define E2CFG_WRITE 0x02
89 #define E2CFG_ERASE 0x04
90 #define E2CFG_ROM 0x08
91 #define E2CFG_CLK_EXT 0x80
92
93 /*
94 * There are 10 general analog inputs and 7 dedicated inputs
95 * They are:
96 * 0 - 9 = AIN0 - AIN9
97 * 10 = Vbat
98 * 11 = 3.3V Standby
99 * 12 = 3.3V Main
100 * 13 = +5V
101 * 14 = Vccp (CPU core voltage)
102 * 15 = +12V
103 * 16 = -12V
104 */
105 static u16 ADM1026_REG_IN[] = {
106 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
107 0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
108 0x2b, 0x2c, 0x2d, 0x2e, 0x2f
109 };
110 static u16 ADM1026_REG_IN_MIN[] = {
111 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
112 0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
113 0x4b, 0x4c, 0x4d, 0x4e, 0x4f
114 };
115 static u16 ADM1026_REG_IN_MAX[] = {
116 0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
117 0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
118 0x43, 0x44, 0x45, 0x46, 0x47
119 };
120
121 /*
122 * Temperatures are:
123 * 0 - Internal
124 * 1 - External 1
125 * 2 - External 2
126 */
127 static u16 ADM1026_REG_TEMP[] = { 0x1f, 0x28, 0x29 };
128 static u16 ADM1026_REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
129 static u16 ADM1026_REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
130 static u16 ADM1026_REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
131 static u16 ADM1026_REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
132 static u16 ADM1026_REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };
133
134 #define ADM1026_REG_FAN(nr) (0x38 + (nr))
135 #define ADM1026_REG_FAN_MIN(nr) (0x60 + (nr))
136 #define ADM1026_REG_FAN_DIV_0_3 0x02
137 #define ADM1026_REG_FAN_DIV_4_7 0x03
138
139 #define ADM1026_REG_DAC 0x04
140 #define ADM1026_REG_PWM 0x05
141
142 #define ADM1026_REG_GPIO_CFG_0_3 0x08
143 #define ADM1026_REG_GPIO_CFG_4_7 0x09
144 #define ADM1026_REG_GPIO_CFG_8_11 0x0a
145 #define ADM1026_REG_GPIO_CFG_12_15 0x0b
146 /* CFG_16 in REG_CFG3 */
147 #define ADM1026_REG_GPIO_STATUS_0_7 0x24
148 #define ADM1026_REG_GPIO_STATUS_8_15 0x25
149 /* STATUS_16 in REG_STATUS4 */
150 #define ADM1026_REG_GPIO_MASK_0_7 0x1c
151 #define ADM1026_REG_GPIO_MASK_8_15 0x1d
152 /* MASK_16 in REG_MASK4 */
153
154 #define ADM1026_REG_COMPANY 0x16
155 #define ADM1026_REG_VERSTEP 0x17
156 /* These are the recognized values for the above regs */
157 #define ADM1026_COMPANY_ANALOG_DEV 0x41
158 #define ADM1026_VERSTEP_GENERIC 0x40
159 #define ADM1026_VERSTEP_ADM1026 0x44
160
161 #define ADM1026_REG_MASK1 0x18
162 #define ADM1026_REG_MASK2 0x19
163 #define ADM1026_REG_MASK3 0x1a
164 #define ADM1026_REG_MASK4 0x1b
165
166 #define ADM1026_REG_STATUS1 0x20
167 #define ADM1026_REG_STATUS2 0x21
168 #define ADM1026_REG_STATUS3 0x22
169 #define ADM1026_REG_STATUS4 0x23
170
171 #define ADM1026_FAN_ACTIVATION_TEMP_HYST -6
172 #define ADM1026_FAN_CONTROL_TEMP_RANGE 20
173 #define ADM1026_PWM_MAX 255
174
175 /*
176 * Conversions. Rounding and limit checking is only done on the TO_REG
177 * variants. Note that you should be a bit careful with which arguments
178 * these macros are called: arguments may be evaluated more than once.
179 */
180
181 /*
182 * IN are scaled according to built-in resistors. These are the
183 * voltages corresponding to 3/4 of full scale (192 or 0xc0)
184 * NOTE: The -12V input needs an additional factor to account
185 * for the Vref pullup resistor.
186 * NEG12_OFFSET = SCALE * Vref / V-192 - Vref
187 * = 13875 * 2.50 / 1.875 - 2500
188 * = 16000
189 *
190 * The values in this table are based on Table II, page 15 of the
191 * datasheet.
192 */
193 static int adm1026_scaling[] = { /* .001 Volts */
194 2250, 2250, 2250, 2250, 2250, 2250,
195 1875, 1875, 1875, 1875, 3000, 3330,
196 3330, 4995, 2250, 12000, 13875
197 };
198 #define NEG12_OFFSET 16000
199 #define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
200 #define INS_TO_REG(n, val) \
201 SCALE(clamp_val(val, 0, 255 * adm1026_scaling[n] / 192), \
202 adm1026_scaling[n], 192)
203 #define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
204
205 /*
206 * FAN speed is measured using 22.5kHz clock and counts for 2 pulses
207 * and we assume a 2 pulse-per-rev fan tach signal
208 * 22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
209 */
210 #define FAN_TO_REG(val, div) ((val) <= 0 ? 0xff : \
211 clamp_val(1350000 / ((val) * (div)), \
212 1, 254))
213 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 0xff ? 0 : \
214 1350000 / ((val) * (div)))
215 #define DIV_FROM_REG(val) (1 << (val))
216 #define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
217
218 /* Temperature is reported in 1 degC increments */
219 #define TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
220 1000)
221 #define TEMP_FROM_REG(val) ((val) * 1000)
222 #define OFFSET_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
223 1000)
224 #define OFFSET_FROM_REG(val) ((val) * 1000)
225
226 #define PWM_TO_REG(val) (clamp_val(val, 0, 255))
227 #define PWM_FROM_REG(val) (val)
228
229 #define PWM_MIN_TO_REG(val) ((val) & 0xf0)
230 #define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
231
232 /*
233 * Analog output is a voltage, and scaled to millivolts. The datasheet
234 * indicates that the DAC could be used to drive the fans, but in our
235 * example board (Arima HDAMA) it isn't connected to the fans at all.
236 */
237 #define DAC_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, 0, 2500) * 255, \
238 2500)
239 #define DAC_FROM_REG(val) (((val) * 2500) / 255)
240
241 /*
242 * Chip sampling rates
243 *
244 * Some sensors are not updated more frequently than once per second
245 * so it doesn't make sense to read them more often than that.
246 * We cache the results and return the saved data if the driver
247 * is called again before a second has elapsed.
248 *
249 * Also, there is significant configuration data for this chip
250 * So, we keep the config data up to date in the cache
251 * when it is written and only sample it once every 5 *minutes*
252 */
253 #define ADM1026_DATA_INTERVAL (1 * HZ)
254 #define ADM1026_CONFIG_INTERVAL (5 * 60 * HZ)
255
256 /*
257 * We allow for multiple chips in a single system.
258 *
259 * For each registered ADM1026, we need to keep state information
260 * at client->data. The adm1026_data structure is dynamically
261 * allocated, when a new client structure is allocated.
262 */
263
264 struct pwm_data {
265 u8 pwm;
266 u8 enable;
267 u8 auto_pwm_min;
268 };
269
270 struct adm1026_data {
271 struct i2c_client *client;
272 const struct attribute_group *groups[3];
273
274 struct mutex update_lock;
275 int valid; /* !=0 if following fields are valid */
276 unsigned long last_reading; /* In jiffies */
277 unsigned long last_config; /* In jiffies */
278
279 u8 in[17]; /* Register value */
280 u8 in_max[17]; /* Register value */
281 u8 in_min[17]; /* Register value */
282 s8 temp[3]; /* Register value */
283 s8 temp_min[3]; /* Register value */
284 s8 temp_max[3]; /* Register value */
285 s8 temp_tmin[3]; /* Register value */
286 s8 temp_crit[3]; /* Register value */
287 s8 temp_offset[3]; /* Register value */
288 u8 fan[8]; /* Register value */
289 u8 fan_min[8]; /* Register value */
290 u8 fan_div[8]; /* Decoded value */
291 struct pwm_data pwm1; /* Pwm control values */
292 u8 vrm; /* VRM version */
293 u8 analog_out; /* Register value (DAC) */
294 long alarms; /* Register encoding, combined */
295 long alarm_mask; /* Register encoding, combined */
296 long gpio; /* Register encoding, combined */
297 long gpio_mask; /* Register encoding, combined */
298 u8 gpio_config[17]; /* Decoded value */
299 u8 config1; /* Register value */
300 u8 config2; /* Register value */
301 u8 config3; /* Register value */
302 };
303
304 static int adm1026_read_value(struct i2c_client *client, u8 reg)
305 {
306 int res;
307
308 if (reg < 0x80) {
309 /* "RAM" locations */
310 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
311 } else {
312 /* EEPROM, do nothing */
313 res = 0;
314 }
315 return res;
316 }
317
318 static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
319 {
320 int res;
321
322 if (reg < 0x80) {
323 /* "RAM" locations */
324 res = i2c_smbus_write_byte_data(client, reg, value);
325 } else {
326 /* EEPROM, do nothing */
327 res = 0;
328 }
329 return res;
330 }
331
332 static struct adm1026_data *adm1026_update_device(struct device *dev)
333 {
334 struct adm1026_data *data = dev_get_drvdata(dev);
335 struct i2c_client *client = data->client;
336 int i;
337 long value, alarms, gpio;
338
339 mutex_lock(&data->update_lock);
340 if (!data->valid
341 || time_after(jiffies,
342 data->last_reading + ADM1026_DATA_INTERVAL)) {
343 /* Things that change quickly */
344 dev_dbg(&client->dev, "Reading sensor values\n");
345 for (i = 0; i <= 16; ++i) {
346 data->in[i] =
347 adm1026_read_value(client, ADM1026_REG_IN[i]);
348 }
349
350 for (i = 0; i <= 7; ++i) {
351 data->fan[i] =
352 adm1026_read_value(client, ADM1026_REG_FAN(i));
353 }
354
355 for (i = 0; i <= 2; ++i) {
356 /*
357 * NOTE: temp[] is s8 and we assume 2's complement
358 * "conversion" in the assignment
359 */
360 data->temp[i] =
361 adm1026_read_value(client, ADM1026_REG_TEMP[i]);
362 }
363
364 data->pwm1.pwm = adm1026_read_value(client,
365 ADM1026_REG_PWM);
366 data->analog_out = adm1026_read_value(client,
367 ADM1026_REG_DAC);
368 /* GPIO16 is MSbit of alarms, move it to gpio */
369 alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
370 gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
371 alarms &= 0x7f;
372 alarms <<= 8;
373 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
374 alarms <<= 8;
375 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
376 alarms <<= 8;
377 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
378 data->alarms = alarms;
379
380 /* Read the GPIO values */
381 gpio |= adm1026_read_value(client,
382 ADM1026_REG_GPIO_STATUS_8_15);
383 gpio <<= 8;
384 gpio |= adm1026_read_value(client,
385 ADM1026_REG_GPIO_STATUS_0_7);
386 data->gpio = gpio;
387
388 data->last_reading = jiffies;
389 } /* last_reading */
390
391 if (!data->valid ||
392 time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
393 /* Things that don't change often */
394 dev_dbg(&client->dev, "Reading config values\n");
395 for (i = 0; i <= 16; ++i) {
396 data->in_min[i] = adm1026_read_value(client,
397 ADM1026_REG_IN_MIN[i]);
398 data->in_max[i] = adm1026_read_value(client,
399 ADM1026_REG_IN_MAX[i]);
400 }
401
402 value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
403 | (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
404 << 8);
405 for (i = 0; i <= 7; ++i) {
406 data->fan_min[i] = adm1026_read_value(client,
407 ADM1026_REG_FAN_MIN(i));
408 data->fan_div[i] = DIV_FROM_REG(value & 0x03);
409 value >>= 2;
410 }
411
412 for (i = 0; i <= 2; ++i) {
413 /*
414 * NOTE: temp_xxx[] are s8 and we assume 2's
415 * complement "conversion" in the assignment
416 */
417 data->temp_min[i] = adm1026_read_value(client,
418 ADM1026_REG_TEMP_MIN[i]);
419 data->temp_max[i] = adm1026_read_value(client,
420 ADM1026_REG_TEMP_MAX[i]);
421 data->temp_tmin[i] = adm1026_read_value(client,
422 ADM1026_REG_TEMP_TMIN[i]);
423 data->temp_crit[i] = adm1026_read_value(client,
424 ADM1026_REG_TEMP_THERM[i]);
425 data->temp_offset[i] = adm1026_read_value(client,
426 ADM1026_REG_TEMP_OFFSET[i]);
427 }
428
429 /* Read the STATUS/alarm masks */
430 alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
431 gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
432 alarms = (alarms & 0x7f) << 8;
433 alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
434 alarms <<= 8;
435 alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
436 alarms <<= 8;
437 alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
438 data->alarm_mask = alarms;
439
440 /* Read the GPIO values */
441 gpio |= adm1026_read_value(client,
442 ADM1026_REG_GPIO_MASK_8_15);
443 gpio <<= 8;
444 gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
445 data->gpio_mask = gpio;
446
447 /* Read various values from CONFIG1 */
448 data->config1 = adm1026_read_value(client,
449 ADM1026_REG_CONFIG1);
450 if (data->config1 & CFG1_PWM_AFC) {
451 data->pwm1.enable = 2;
452 data->pwm1.auto_pwm_min =
453 PWM_MIN_FROM_REG(data->pwm1.pwm);
454 }
455 /* Read the GPIO config */
456 data->config2 = adm1026_read_value(client,
457 ADM1026_REG_CONFIG2);
458 data->config3 = adm1026_read_value(client,
459 ADM1026_REG_CONFIG3);
460 data->gpio_config[16] = (data->config3 >> 6) & 0x03;
461
462 value = 0;
463 for (i = 0; i <= 15; ++i) {
464 if ((i & 0x03) == 0) {
465 value = adm1026_read_value(client,
466 ADM1026_REG_GPIO_CFG_0_3 + i/4);
467 }
468 data->gpio_config[i] = value & 0x03;
469 value >>= 2;
470 }
471
472 data->last_config = jiffies;
473 } /* last_config */
474
475 data->valid = 1;
476 mutex_unlock(&data->update_lock);
477 return data;
478 }
479
480 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
481 char *buf)
482 {
483 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
484 int nr = sensor_attr->index;
485 struct adm1026_data *data = adm1026_update_device(dev);
486 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
487 }
488 static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
489 char *buf)
490 {
491 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
492 int nr = sensor_attr->index;
493 struct adm1026_data *data = adm1026_update_device(dev);
494 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
495 }
496 static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
497 const char *buf, size_t count)
498 {
499 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
500 int nr = sensor_attr->index;
501 struct adm1026_data *data = dev_get_drvdata(dev);
502 struct i2c_client *client = data->client;
503 long val;
504 int err;
505
506 err = kstrtol(buf, 10, &val);
507 if (err)
508 return err;
509
510 mutex_lock(&data->update_lock);
511 data->in_min[nr] = INS_TO_REG(nr, val);
512 adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
513 mutex_unlock(&data->update_lock);
514 return count;
515 }
516 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
517 char *buf)
518 {
519 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
520 int nr = sensor_attr->index;
521 struct adm1026_data *data = adm1026_update_device(dev);
522 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
523 }
524 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
525 const char *buf, size_t count)
526 {
527 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
528 int nr = sensor_attr->index;
529 struct adm1026_data *data = dev_get_drvdata(dev);
530 struct i2c_client *client = data->client;
531 long val;
532 int err;
533
534 err = kstrtol(buf, 10, &val);
535 if (err)
536 return err;
537
538 mutex_lock(&data->update_lock);
539 data->in_max[nr] = INS_TO_REG(nr, val);
540 adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
541 mutex_unlock(&data->update_lock);
542 return count;
543 }
544
545 #define in_reg(offset) \
546 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
547 NULL, offset); \
548 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
549 show_in_min, set_in_min, offset); \
550 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
551 show_in_max, set_in_max, offset);
552
553
554 in_reg(0);
555 in_reg(1);
556 in_reg(2);
557 in_reg(3);
558 in_reg(4);
559 in_reg(5);
560 in_reg(6);
561 in_reg(7);
562 in_reg(8);
563 in_reg(9);
564 in_reg(10);
565 in_reg(11);
566 in_reg(12);
567 in_reg(13);
568 in_reg(14);
569 in_reg(15);
570
571 static ssize_t show_in16(struct device *dev, struct device_attribute *attr,
572 char *buf)
573 {
574 struct adm1026_data *data = adm1026_update_device(dev);
575 return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
576 NEG12_OFFSET);
577 }
578 static ssize_t show_in16_min(struct device *dev, struct device_attribute *attr,
579 char *buf)
580 {
581 struct adm1026_data *data = adm1026_update_device(dev);
582 return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
583 - NEG12_OFFSET);
584 }
585 static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr,
586 const char *buf, size_t count)
587 {
588 struct adm1026_data *data = dev_get_drvdata(dev);
589 struct i2c_client *client = data->client;
590 long val;
591 int err;
592
593 err = kstrtol(buf, 10, &val);
594 if (err)
595 return err;
596
597 mutex_lock(&data->update_lock);
598 data->in_min[16] = INS_TO_REG(16,
599 clamp_val(val, INT_MIN,
600 INT_MAX - NEG12_OFFSET) +
601 NEG12_OFFSET);
602 adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
603 mutex_unlock(&data->update_lock);
604 return count;
605 }
606 static ssize_t show_in16_max(struct device *dev, struct device_attribute *attr,
607 char *buf)
608 {
609 struct adm1026_data *data = adm1026_update_device(dev);
610 return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
611 - NEG12_OFFSET);
612 }
613 static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr,
614 const char *buf, size_t count)
615 {
616 struct adm1026_data *data = dev_get_drvdata(dev);
617 struct i2c_client *client = data->client;
618 long val;
619 int err;
620
621 err = kstrtol(buf, 10, &val);
622 if (err)
623 return err;
624
625 mutex_lock(&data->update_lock);
626 data->in_max[16] = INS_TO_REG(16,
627 clamp_val(val, INT_MIN,
628 INT_MAX - NEG12_OFFSET) +
629 NEG12_OFFSET);
630 adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
631 mutex_unlock(&data->update_lock);
632 return count;
633 }
634
635 static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, show_in16, NULL, 16);
636 static SENSOR_DEVICE_ATTR(in16_min, S_IRUGO | S_IWUSR, show_in16_min,
637 set_in16_min, 16);
638 static SENSOR_DEVICE_ATTR(in16_max, S_IRUGO | S_IWUSR, show_in16_max,
639 set_in16_max, 16);
640
641
642 /* Now add fan read/write functions */
643
644 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
645 char *buf)
646 {
647 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
648 int nr = sensor_attr->index;
649 struct adm1026_data *data = adm1026_update_device(dev);
650 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
651 data->fan_div[nr]));
652 }
653 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
654 char *buf)
655 {
656 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
657 int nr = sensor_attr->index;
658 struct adm1026_data *data = adm1026_update_device(dev);
659 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
660 data->fan_div[nr]));
661 }
662 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
663 const char *buf, size_t count)
664 {
665 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
666 int nr = sensor_attr->index;
667 struct adm1026_data *data = dev_get_drvdata(dev);
668 struct i2c_client *client = data->client;
669 long val;
670 int err;
671
672 err = kstrtol(buf, 10, &val);
673 if (err)
674 return err;
675
676 mutex_lock(&data->update_lock);
677 data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
678 adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
679 data->fan_min[nr]);
680 mutex_unlock(&data->update_lock);
681 return count;
682 }
683
684 #define fan_offset(offset) \
685 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
686 offset - 1); \
687 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
688 show_fan_min, set_fan_min, offset - 1);
689
690 fan_offset(1);
691 fan_offset(2);
692 fan_offset(3);
693 fan_offset(4);
694 fan_offset(5);
695 fan_offset(6);
696 fan_offset(7);
697 fan_offset(8);
698
699 /* Adjust fan_min to account for new fan divisor */
700 static void fixup_fan_min(struct device *dev, int fan, int old_div)
701 {
702 struct adm1026_data *data = dev_get_drvdata(dev);
703 struct i2c_client *client = data->client;
704 int new_min;
705 int new_div = data->fan_div[fan];
706
707 /* 0 and 0xff are special. Don't adjust them */
708 if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff)
709 return;
710
711 new_min = data->fan_min[fan] * old_div / new_div;
712 new_min = clamp_val(new_min, 1, 254);
713 data->fan_min[fan] = new_min;
714 adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
715 }
716
717 /* Now add fan_div read/write functions */
718 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
719 char *buf)
720 {
721 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
722 int nr = sensor_attr->index;
723 struct adm1026_data *data = adm1026_update_device(dev);
724 return sprintf(buf, "%d\n", data->fan_div[nr]);
725 }
726 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
727 const char *buf, size_t count)
728 {
729 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
730 int nr = sensor_attr->index;
731 struct adm1026_data *data = dev_get_drvdata(dev);
732 struct i2c_client *client = data->client;
733 long val;
734 int orig_div, new_div;
735 int err;
736
737 err = kstrtol(buf, 10, &val);
738 if (err)
739 return err;
740
741 new_div = DIV_TO_REG(val);
742
743 mutex_lock(&data->update_lock);
744 orig_div = data->fan_div[nr];
745 data->fan_div[nr] = DIV_FROM_REG(new_div);
746
747 if (nr < 4) { /* 0 <= nr < 4 */
748 adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
749 (DIV_TO_REG(data->fan_div[0]) << 0) |
750 (DIV_TO_REG(data->fan_div[1]) << 2) |
751 (DIV_TO_REG(data->fan_div[2]) << 4) |
752 (DIV_TO_REG(data->fan_div[3]) << 6));
753 } else { /* 3 < nr < 8 */
754 adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
755 (DIV_TO_REG(data->fan_div[4]) << 0) |
756 (DIV_TO_REG(data->fan_div[5]) << 2) |
757 (DIV_TO_REG(data->fan_div[6]) << 4) |
758 (DIV_TO_REG(data->fan_div[7]) << 6));
759 }
760
761 if (data->fan_div[nr] != orig_div)
762 fixup_fan_min(dev, nr, orig_div);
763
764 mutex_unlock(&data->update_lock);
765 return count;
766 }
767
768 #define fan_offset_div(offset) \
769 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
770 show_fan_div, set_fan_div, offset - 1);
771
772 fan_offset_div(1);
773 fan_offset_div(2);
774 fan_offset_div(3);
775 fan_offset_div(4);
776 fan_offset_div(5);
777 fan_offset_div(6);
778 fan_offset_div(7);
779 fan_offset_div(8);
780
781 /* Temps */
782 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
783 char *buf)
784 {
785 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
786 int nr = sensor_attr->index;
787 struct adm1026_data *data = adm1026_update_device(dev);
788 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
789 }
790 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
791 char *buf)
792 {
793 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
794 int nr = sensor_attr->index;
795 struct adm1026_data *data = adm1026_update_device(dev);
796 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
797 }
798 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
799 const char *buf, size_t count)
800 {
801 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
802 int nr = sensor_attr->index;
803 struct adm1026_data *data = dev_get_drvdata(dev);
804 struct i2c_client *client = data->client;
805 long val;
806 int err;
807
808 err = kstrtol(buf, 10, &val);
809 if (err)
810 return err;
811
812 mutex_lock(&data->update_lock);
813 data->temp_min[nr] = TEMP_TO_REG(val);
814 adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
815 data->temp_min[nr]);
816 mutex_unlock(&data->update_lock);
817 return count;
818 }
819 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
820 char *buf)
821 {
822 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
823 int nr = sensor_attr->index;
824 struct adm1026_data *data = adm1026_update_device(dev);
825 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
826 }
827 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
828 const char *buf, size_t count)
829 {
830 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
831 int nr = sensor_attr->index;
832 struct adm1026_data *data = dev_get_drvdata(dev);
833 struct i2c_client *client = data->client;
834 long val;
835 int err;
836
837 err = kstrtol(buf, 10, &val);
838 if (err)
839 return err;
840
841 mutex_lock(&data->update_lock);
842 data->temp_max[nr] = TEMP_TO_REG(val);
843 adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
844 data->temp_max[nr]);
845 mutex_unlock(&data->update_lock);
846 return count;
847 }
848
849 #define temp_reg(offset) \
850 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \
851 NULL, offset - 1); \
852 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
853 show_temp_min, set_temp_min, offset - 1); \
854 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
855 show_temp_max, set_temp_max, offset - 1);
856
857
858 temp_reg(1);
859 temp_reg(2);
860 temp_reg(3);
861
862 static ssize_t show_temp_offset(struct device *dev,
863 struct device_attribute *attr, char *buf)
864 {
865 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
866 int nr = sensor_attr->index;
867 struct adm1026_data *data = adm1026_update_device(dev);
868 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
869 }
870 static ssize_t set_temp_offset(struct device *dev,
871 struct device_attribute *attr, const char *buf,
872 size_t count)
873 {
874 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
875 int nr = sensor_attr->index;
876 struct adm1026_data *data = dev_get_drvdata(dev);
877 struct i2c_client *client = data->client;
878 long val;
879 int err;
880
881 err = kstrtol(buf, 10, &val);
882 if (err)
883 return err;
884
885 mutex_lock(&data->update_lock);
886 data->temp_offset[nr] = TEMP_TO_REG(val);
887 adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
888 data->temp_offset[nr]);
889 mutex_unlock(&data->update_lock);
890 return count;
891 }
892
893 #define temp_offset_reg(offset) \
894 static SENSOR_DEVICE_ATTR(temp##offset##_offset, S_IRUGO | S_IWUSR, \
895 show_temp_offset, set_temp_offset, offset - 1);
896
897 temp_offset_reg(1);
898 temp_offset_reg(2);
899 temp_offset_reg(3);
900
901 static ssize_t show_temp_auto_point1_temp_hyst(struct device *dev,
902 struct device_attribute *attr, char *buf)
903 {
904 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
905 int nr = sensor_attr->index;
906 struct adm1026_data *data = adm1026_update_device(dev);
907 return sprintf(buf, "%d\n", TEMP_FROM_REG(
908 ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
909 }
910 static ssize_t show_temp_auto_point2_temp(struct device *dev,
911 struct device_attribute *attr, char *buf)
912 {
913 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
914 int nr = sensor_attr->index;
915 struct adm1026_data *data = adm1026_update_device(dev);
916 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
917 ADM1026_FAN_CONTROL_TEMP_RANGE));
918 }
919 static ssize_t show_temp_auto_point1_temp(struct device *dev,
920 struct device_attribute *attr, char *buf)
921 {
922 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
923 int nr = sensor_attr->index;
924 struct adm1026_data *data = adm1026_update_device(dev);
925 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
926 }
927 static ssize_t set_temp_auto_point1_temp(struct device *dev,
928 struct device_attribute *attr, const char *buf, size_t count)
929 {
930 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
931 int nr = sensor_attr->index;
932 struct adm1026_data *data = dev_get_drvdata(dev);
933 struct i2c_client *client = data->client;
934 long val;
935 int err;
936
937 err = kstrtol(buf, 10, &val);
938 if (err)
939 return err;
940
941 mutex_lock(&data->update_lock);
942 data->temp_tmin[nr] = TEMP_TO_REG(val);
943 adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
944 data->temp_tmin[nr]);
945 mutex_unlock(&data->update_lock);
946 return count;
947 }
948
949 #define temp_auto_point(offset) \
950 static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp, \
951 S_IRUGO | S_IWUSR, show_temp_auto_point1_temp, \
952 set_temp_auto_point1_temp, offset - 1); \
953 static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp_hyst, S_IRUGO,\
954 show_temp_auto_point1_temp_hyst, NULL, offset - 1); \
955 static SENSOR_DEVICE_ATTR(temp##offset##_auto_point2_temp, S_IRUGO, \
956 show_temp_auto_point2_temp, NULL, offset - 1);
957
958 temp_auto_point(1);
959 temp_auto_point(2);
960 temp_auto_point(3);
961
962 static ssize_t show_temp_crit_enable(struct device *dev,
963 struct device_attribute *attr, char *buf)
964 {
965 struct adm1026_data *data = adm1026_update_device(dev);
966 return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
967 }
968 static ssize_t set_temp_crit_enable(struct device *dev,
969 struct device_attribute *attr, const char *buf, size_t count)
970 {
971 struct adm1026_data *data = dev_get_drvdata(dev);
972 struct i2c_client *client = data->client;
973 unsigned long val;
974 int err;
975
976 err = kstrtoul(buf, 10, &val);
977 if (err)
978 return err;
979
980 if (val > 1)
981 return -EINVAL;
982
983 mutex_lock(&data->update_lock);
984 data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
985 adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
986 mutex_unlock(&data->update_lock);
987
988 return count;
989 }
990
991 #define temp_crit_enable(offset) \
992 static DEVICE_ATTR(temp##offset##_crit_enable, S_IRUGO | S_IWUSR, \
993 show_temp_crit_enable, set_temp_crit_enable);
994
995 temp_crit_enable(1);
996 temp_crit_enable(2);
997 temp_crit_enable(3);
998
999 static ssize_t show_temp_crit(struct device *dev,
1000 struct device_attribute *attr, char *buf)
1001 {
1002 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1003 int nr = sensor_attr->index;
1004 struct adm1026_data *data = adm1026_update_device(dev);
1005 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
1006 }
1007 static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
1008 const char *buf, size_t count)
1009 {
1010 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1011 int nr = sensor_attr->index;
1012 struct adm1026_data *data = dev_get_drvdata(dev);
1013 struct i2c_client *client = data->client;
1014 long val;
1015 int err;
1016
1017 err = kstrtol(buf, 10, &val);
1018 if (err)
1019 return err;
1020
1021 mutex_lock(&data->update_lock);
1022 data->temp_crit[nr] = TEMP_TO_REG(val);
1023 adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
1024 data->temp_crit[nr]);
1025 mutex_unlock(&data->update_lock);
1026 return count;
1027 }
1028
1029 #define temp_crit_reg(offset) \
1030 static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
1031 show_temp_crit, set_temp_crit, offset - 1);
1032
1033 temp_crit_reg(1);
1034 temp_crit_reg(2);
1035 temp_crit_reg(3);
1036
1037 static ssize_t show_analog_out_reg(struct device *dev,
1038 struct device_attribute *attr, char *buf)
1039 {
1040 struct adm1026_data *data = adm1026_update_device(dev);
1041 return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
1042 }
1043 static ssize_t set_analog_out_reg(struct device *dev,
1044 struct device_attribute *attr,
1045 const char *buf, size_t count)
1046 {
1047 struct adm1026_data *data = dev_get_drvdata(dev);
1048 struct i2c_client *client = data->client;
1049 long val;
1050 int err;
1051
1052 err = kstrtol(buf, 10, &val);
1053 if (err)
1054 return err;
1055
1056 mutex_lock(&data->update_lock);
1057 data->analog_out = DAC_TO_REG(val);
1058 adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
1059 mutex_unlock(&data->update_lock);
1060 return count;
1061 }
1062
1063 static DEVICE_ATTR(analog_out, S_IRUGO | S_IWUSR, show_analog_out_reg,
1064 set_analog_out_reg);
1065
1066 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1067 char *buf)
1068 {
1069 struct adm1026_data *data = adm1026_update_device(dev);
1070 int vid = (data->gpio >> 11) & 0x1f;
1071
1072 dev_dbg(dev, "Setting VID from GPIO11-15.\n");
1073 return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
1074 }
1075
1076 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1077
1078 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1079 char *buf)
1080 {
1081 struct adm1026_data *data = dev_get_drvdata(dev);
1082 return sprintf(buf, "%d\n", data->vrm);
1083 }
1084
1085 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1086 const char *buf, size_t count)
1087 {
1088 struct adm1026_data *data = dev_get_drvdata(dev);
1089 unsigned long val;
1090 int err;
1091
1092 err = kstrtoul(buf, 10, &val);
1093 if (err)
1094 return err;
1095
1096 if (val > 255)
1097 return -EINVAL;
1098
1099 data->vrm = val;
1100 return count;
1101 }
1102
1103 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1104
1105 static ssize_t show_alarms_reg(struct device *dev,
1106 struct device_attribute *attr, char *buf)
1107 {
1108 struct adm1026_data *data = adm1026_update_device(dev);
1109 return sprintf(buf, "%ld\n", data->alarms);
1110 }
1111
1112 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1113
1114 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1115 char *buf)
1116 {
1117 struct adm1026_data *data = adm1026_update_device(dev);
1118 int bitnr = to_sensor_dev_attr(attr)->index;
1119 return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
1120 }
1121
1122 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0);
1123 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
1124 static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 1);
1125 static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 2);
1126 static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 3);
1127 static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 4);
1128 static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 5);
1129 static SENSOR_DEVICE_ATTR(in15_alarm, S_IRUGO, show_alarm, NULL, 6);
1130 static SENSOR_DEVICE_ATTR(in16_alarm, S_IRUGO, show_alarm, NULL, 7);
1131 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1132 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1133 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1134 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1135 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1136 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1137 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1138 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1139 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 16);
1140 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 17);
1141 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 18);
1142 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 19);
1143 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 20);
1144 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 21);
1145 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 22);
1146 static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL, 23);
1147 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 24);
1148 static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 25);
1149 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 26);
1150
1151 static ssize_t show_alarm_mask(struct device *dev,
1152 struct device_attribute *attr, char *buf)
1153 {
1154 struct adm1026_data *data = adm1026_update_device(dev);
1155 return sprintf(buf, "%ld\n", data->alarm_mask);
1156 }
1157 static ssize_t set_alarm_mask(struct device *dev, struct device_attribute *attr,
1158 const char *buf, size_t count)
1159 {
1160 struct adm1026_data *data = dev_get_drvdata(dev);
1161 struct i2c_client *client = data->client;
1162 unsigned long mask;
1163 long val;
1164 int err;
1165
1166 err = kstrtol(buf, 10, &val);
1167 if (err)
1168 return err;
1169
1170 mutex_lock(&data->update_lock);
1171 data->alarm_mask = val & 0x7fffffff;
1172 mask = data->alarm_mask
1173 | (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
1174 adm1026_write_value(client, ADM1026_REG_MASK1,
1175 mask & 0xff);
1176 mask >>= 8;
1177 adm1026_write_value(client, ADM1026_REG_MASK2,
1178 mask & 0xff);
1179 mask >>= 8;
1180 adm1026_write_value(client, ADM1026_REG_MASK3,
1181 mask & 0xff);
1182 mask >>= 8;
1183 adm1026_write_value(client, ADM1026_REG_MASK4,
1184 mask & 0xff);
1185 mutex_unlock(&data->update_lock);
1186 return count;
1187 }
1188
1189 static DEVICE_ATTR(alarm_mask, S_IRUGO | S_IWUSR, show_alarm_mask,
1190 set_alarm_mask);
1191
1192
1193 static ssize_t show_gpio(struct device *dev, struct device_attribute *attr,
1194 char *buf)
1195 {
1196 struct adm1026_data *data = adm1026_update_device(dev);
1197 return sprintf(buf, "%ld\n", data->gpio);
1198 }
1199 static ssize_t set_gpio(struct device *dev, struct device_attribute *attr,
1200 const char *buf, size_t count)
1201 {
1202 struct adm1026_data *data = dev_get_drvdata(dev);
1203 struct i2c_client *client = data->client;
1204 long gpio;
1205 long val;
1206 int err;
1207
1208 err = kstrtol(buf, 10, &val);
1209 if (err)
1210 return err;
1211
1212 mutex_lock(&data->update_lock);
1213 data->gpio = val & 0x1ffff;
1214 gpio = data->gpio;
1215 adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
1216 gpio >>= 8;
1217 adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
1218 gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
1219 adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
1220 mutex_unlock(&data->update_lock);
1221 return count;
1222 }
1223
1224 static DEVICE_ATTR(gpio, S_IRUGO | S_IWUSR, show_gpio, set_gpio);
1225
1226 static ssize_t show_gpio_mask(struct device *dev, struct device_attribute *attr,
1227 char *buf)
1228 {
1229 struct adm1026_data *data = adm1026_update_device(dev);
1230 return sprintf(buf, "%ld\n", data->gpio_mask);
1231 }
1232 static ssize_t set_gpio_mask(struct device *dev, struct device_attribute *attr,
1233 const char *buf, size_t count)
1234 {
1235 struct adm1026_data *data = dev_get_drvdata(dev);
1236 struct i2c_client *client = data->client;
1237 long mask;
1238 long val;
1239 int err;
1240
1241 err = kstrtol(buf, 10, &val);
1242 if (err)
1243 return err;
1244
1245 mutex_lock(&data->update_lock);
1246 data->gpio_mask = val & 0x1ffff;
1247 mask = data->gpio_mask;
1248 adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
1249 mask >>= 8;
1250 adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
1251 mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
1252 adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
1253 mutex_unlock(&data->update_lock);
1254 return count;
1255 }
1256
1257 static DEVICE_ATTR(gpio_mask, S_IRUGO | S_IWUSR, show_gpio_mask, set_gpio_mask);
1258
1259 static ssize_t show_pwm_reg(struct device *dev, struct device_attribute *attr,
1260 char *buf)
1261 {
1262 struct adm1026_data *data = adm1026_update_device(dev);
1263 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
1264 }
1265
1266 static ssize_t set_pwm_reg(struct device *dev, struct device_attribute *attr,
1267 const char *buf, size_t count)
1268 {
1269 struct adm1026_data *data = dev_get_drvdata(dev);
1270 struct i2c_client *client = data->client;
1271
1272 if (data->pwm1.enable == 1) {
1273 long val;
1274 int err;
1275
1276 err = kstrtol(buf, 10, &val);
1277 if (err)
1278 return err;
1279
1280 mutex_lock(&data->update_lock);
1281 data->pwm1.pwm = PWM_TO_REG(val);
1282 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1283 mutex_unlock(&data->update_lock);
1284 }
1285 return count;
1286 }
1287
1288 static ssize_t show_auto_pwm_min(struct device *dev,
1289 struct device_attribute *attr, char *buf)
1290 {
1291 struct adm1026_data *data = adm1026_update_device(dev);
1292 return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
1293 }
1294
1295 static ssize_t set_auto_pwm_min(struct device *dev,
1296 struct device_attribute *attr, const char *buf,
1297 size_t count)
1298 {
1299 struct adm1026_data *data = dev_get_drvdata(dev);
1300 struct i2c_client *client = data->client;
1301 unsigned long val;
1302 int err;
1303
1304 err = kstrtoul(buf, 10, &val);
1305 if (err)
1306 return err;
1307
1308 mutex_lock(&data->update_lock);
1309 data->pwm1.auto_pwm_min = clamp_val(val, 0, 255);
1310 if (data->pwm1.enable == 2) { /* apply immediately */
1311 data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1312 PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1313 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1314 }
1315 mutex_unlock(&data->update_lock);
1316 return count;
1317 }
1318
1319 static ssize_t show_auto_pwm_max(struct device *dev,
1320 struct device_attribute *attr, char *buf)
1321 {
1322 return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
1323 }
1324
1325 static ssize_t show_pwm_enable(struct device *dev,
1326 struct device_attribute *attr, char *buf)
1327 {
1328 struct adm1026_data *data = adm1026_update_device(dev);
1329 return sprintf(buf, "%d\n", data->pwm1.enable);
1330 }
1331
1332 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1333 const char *buf, size_t count)
1334 {
1335 struct adm1026_data *data = dev_get_drvdata(dev);
1336 struct i2c_client *client = data->client;
1337 int old_enable;
1338 unsigned long val;
1339 int err;
1340
1341 err = kstrtoul(buf, 10, &val);
1342 if (err)
1343 return err;
1344
1345 if (val >= 3)
1346 return -EINVAL;
1347
1348 mutex_lock(&data->update_lock);
1349 old_enable = data->pwm1.enable;
1350 data->pwm1.enable = val;
1351 data->config1 = (data->config1 & ~CFG1_PWM_AFC)
1352 | ((val == 2) ? CFG1_PWM_AFC : 0);
1353 adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
1354 if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
1355 data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1356 PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1357 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1358 } else if (!((old_enable == 1) && (val == 1))) {
1359 /* set pwm to safe value */
1360 data->pwm1.pwm = 255;
1361 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1362 }
1363 mutex_unlock(&data->update_lock);
1364
1365 return count;
1366 }
1367
1368 /* enable PWM fan control */
1369 static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1370 static DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1371 static DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1372 static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1373 set_pwm_enable);
1374 static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1375 set_pwm_enable);
1376 static DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1377 set_pwm_enable);
1378 static DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1379 show_auto_pwm_min, set_auto_pwm_min);
1380 static DEVICE_ATTR(temp2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1381 show_auto_pwm_min, set_auto_pwm_min);
1382 static DEVICE_ATTR(temp3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1383 show_auto_pwm_min, set_auto_pwm_min);
1384
1385 static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1386 static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1387 static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1388
1389 static struct attribute *adm1026_attributes[] = {
1390 &sensor_dev_attr_in0_input.dev_attr.attr,
1391 &sensor_dev_attr_in0_max.dev_attr.attr,
1392 &sensor_dev_attr_in0_min.dev_attr.attr,
1393 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1394 &sensor_dev_attr_in1_input.dev_attr.attr,
1395 &sensor_dev_attr_in1_max.dev_attr.attr,
1396 &sensor_dev_attr_in1_min.dev_attr.attr,
1397 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1398 &sensor_dev_attr_in2_input.dev_attr.attr,
1399 &sensor_dev_attr_in2_max.dev_attr.attr,
1400 &sensor_dev_attr_in2_min.dev_attr.attr,
1401 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1402 &sensor_dev_attr_in3_input.dev_attr.attr,
1403 &sensor_dev_attr_in3_max.dev_attr.attr,
1404 &sensor_dev_attr_in3_min.dev_attr.attr,
1405 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1406 &sensor_dev_attr_in4_input.dev_attr.attr,
1407 &sensor_dev_attr_in4_max.dev_attr.attr,
1408 &sensor_dev_attr_in4_min.dev_attr.attr,
1409 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1410 &sensor_dev_attr_in5_input.dev_attr.attr,
1411 &sensor_dev_attr_in5_max.dev_attr.attr,
1412 &sensor_dev_attr_in5_min.dev_attr.attr,
1413 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1414 &sensor_dev_attr_in6_input.dev_attr.attr,
1415 &sensor_dev_attr_in6_max.dev_attr.attr,
1416 &sensor_dev_attr_in6_min.dev_attr.attr,
1417 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1418 &sensor_dev_attr_in7_input.dev_attr.attr,
1419 &sensor_dev_attr_in7_max.dev_attr.attr,
1420 &sensor_dev_attr_in7_min.dev_attr.attr,
1421 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1422 &sensor_dev_attr_in10_input.dev_attr.attr,
1423 &sensor_dev_attr_in10_max.dev_attr.attr,
1424 &sensor_dev_attr_in10_min.dev_attr.attr,
1425 &sensor_dev_attr_in10_alarm.dev_attr.attr,
1426 &sensor_dev_attr_in11_input.dev_attr.attr,
1427 &sensor_dev_attr_in11_max.dev_attr.attr,
1428 &sensor_dev_attr_in11_min.dev_attr.attr,
1429 &sensor_dev_attr_in11_alarm.dev_attr.attr,
1430 &sensor_dev_attr_in12_input.dev_attr.attr,
1431 &sensor_dev_attr_in12_max.dev_attr.attr,
1432 &sensor_dev_attr_in12_min.dev_attr.attr,
1433 &sensor_dev_attr_in12_alarm.dev_attr.attr,
1434 &sensor_dev_attr_in13_input.dev_attr.attr,
1435 &sensor_dev_attr_in13_max.dev_attr.attr,
1436 &sensor_dev_attr_in13_min.dev_attr.attr,
1437 &sensor_dev_attr_in13_alarm.dev_attr.attr,
1438 &sensor_dev_attr_in14_input.dev_attr.attr,
1439 &sensor_dev_attr_in14_max.dev_attr.attr,
1440 &sensor_dev_attr_in14_min.dev_attr.attr,
1441 &sensor_dev_attr_in14_alarm.dev_attr.attr,
1442 &sensor_dev_attr_in15_input.dev_attr.attr,
1443 &sensor_dev_attr_in15_max.dev_attr.attr,
1444 &sensor_dev_attr_in15_min.dev_attr.attr,
1445 &sensor_dev_attr_in15_alarm.dev_attr.attr,
1446 &sensor_dev_attr_in16_input.dev_attr.attr,
1447 &sensor_dev_attr_in16_max.dev_attr.attr,
1448 &sensor_dev_attr_in16_min.dev_attr.attr,
1449 &sensor_dev_attr_in16_alarm.dev_attr.attr,
1450 &sensor_dev_attr_fan1_input.dev_attr.attr,
1451 &sensor_dev_attr_fan1_div.dev_attr.attr,
1452 &sensor_dev_attr_fan1_min.dev_attr.attr,
1453 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1454 &sensor_dev_attr_fan2_input.dev_attr.attr,
1455 &sensor_dev_attr_fan2_div.dev_attr.attr,
1456 &sensor_dev_attr_fan2_min.dev_attr.attr,
1457 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1458 &sensor_dev_attr_fan3_input.dev_attr.attr,
1459 &sensor_dev_attr_fan3_div.dev_attr.attr,
1460 &sensor_dev_attr_fan3_min.dev_attr.attr,
1461 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1462 &sensor_dev_attr_fan4_input.dev_attr.attr,
1463 &sensor_dev_attr_fan4_div.dev_attr.attr,
1464 &sensor_dev_attr_fan4_min.dev_attr.attr,
1465 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1466 &sensor_dev_attr_fan5_input.dev_attr.attr,
1467 &sensor_dev_attr_fan5_div.dev_attr.attr,
1468 &sensor_dev_attr_fan5_min.dev_attr.attr,
1469 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1470 &sensor_dev_attr_fan6_input.dev_attr.attr,
1471 &sensor_dev_attr_fan6_div.dev_attr.attr,
1472 &sensor_dev_attr_fan6_min.dev_attr.attr,
1473 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1474 &sensor_dev_attr_fan7_input.dev_attr.attr,
1475 &sensor_dev_attr_fan7_div.dev_attr.attr,
1476 &sensor_dev_attr_fan7_min.dev_attr.attr,
1477 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1478 &sensor_dev_attr_fan8_input.dev_attr.attr,
1479 &sensor_dev_attr_fan8_div.dev_attr.attr,
1480 &sensor_dev_attr_fan8_min.dev_attr.attr,
1481 &sensor_dev_attr_fan8_alarm.dev_attr.attr,
1482 &sensor_dev_attr_temp1_input.dev_attr.attr,
1483 &sensor_dev_attr_temp1_max.dev_attr.attr,
1484 &sensor_dev_attr_temp1_min.dev_attr.attr,
1485 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1486 &sensor_dev_attr_temp2_input.dev_attr.attr,
1487 &sensor_dev_attr_temp2_max.dev_attr.attr,
1488 &sensor_dev_attr_temp2_min.dev_attr.attr,
1489 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1490 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1491 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1492 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1493 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1494 &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
1495 &sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
1496 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1497 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1498 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1499 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1500 &dev_attr_temp1_crit_enable.attr,
1501 &dev_attr_temp2_crit_enable.attr,
1502 &dev_attr_cpu0_vid.attr,
1503 &dev_attr_vrm.attr,
1504 &dev_attr_alarms.attr,
1505 &dev_attr_alarm_mask.attr,
1506 &dev_attr_gpio.attr,
1507 &dev_attr_gpio_mask.attr,
1508 &dev_attr_pwm1.attr,
1509 &dev_attr_pwm2.attr,
1510 &dev_attr_pwm3.attr,
1511 &dev_attr_pwm1_enable.attr,
1512 &dev_attr_pwm2_enable.attr,
1513 &dev_attr_pwm3_enable.attr,
1514 &dev_attr_temp1_auto_point1_pwm.attr,
1515 &dev_attr_temp2_auto_point1_pwm.attr,
1516 &dev_attr_temp1_auto_point2_pwm.attr,
1517 &dev_attr_temp2_auto_point2_pwm.attr,
1518 &dev_attr_analog_out.attr,
1519 NULL
1520 };
1521
1522 static const struct attribute_group adm1026_group = {
1523 .attrs = adm1026_attributes,
1524 };
1525
1526 static struct attribute *adm1026_attributes_temp3[] = {
1527 &sensor_dev_attr_temp3_input.dev_attr.attr,
1528 &sensor_dev_attr_temp3_max.dev_attr.attr,
1529 &sensor_dev_attr_temp3_min.dev_attr.attr,
1530 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1531 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1532 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1533 &sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
1534 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1535 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1536 &dev_attr_temp3_crit_enable.attr,
1537 &dev_attr_temp3_auto_point1_pwm.attr,
1538 &dev_attr_temp3_auto_point2_pwm.attr,
1539 NULL
1540 };
1541
1542 static const struct attribute_group adm1026_group_temp3 = {
1543 .attrs = adm1026_attributes_temp3,
1544 };
1545
1546 static struct attribute *adm1026_attributes_in8_9[] = {
1547 &sensor_dev_attr_in8_input.dev_attr.attr,
1548 &sensor_dev_attr_in8_max.dev_attr.attr,
1549 &sensor_dev_attr_in8_min.dev_attr.attr,
1550 &sensor_dev_attr_in8_alarm.dev_attr.attr,
1551 &sensor_dev_attr_in9_input.dev_attr.attr,
1552 &sensor_dev_attr_in9_max.dev_attr.attr,
1553 &sensor_dev_attr_in9_min.dev_attr.attr,
1554 &sensor_dev_attr_in9_alarm.dev_attr.attr,
1555 NULL
1556 };
1557
1558 static const struct attribute_group adm1026_group_in8_9 = {
1559 .attrs = adm1026_attributes_in8_9,
1560 };
1561
1562 /* Return 0 if detection is successful, -ENODEV otherwise */
1563 static int adm1026_detect(struct i2c_client *client,
1564 struct i2c_board_info *info)
1565 {
1566 struct i2c_adapter *adapter = client->adapter;
1567 int address = client->addr;
1568 int company, verstep;
1569
1570 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1571 /* We need to be able to do byte I/O */
1572 return -ENODEV;
1573 }
1574
1575 /* Now, we do the remaining detection. */
1576
1577 company = adm1026_read_value(client, ADM1026_REG_COMPANY);
1578 verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);
1579
1580 dev_dbg(&adapter->dev,
1581 "Detecting device at %d,0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1582 i2c_adapter_id(client->adapter), client->addr,
1583 company, verstep);
1584
1585 /* Determine the chip type. */
1586 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
1587 i2c_adapter_id(adapter), address);
1588 if (company == ADM1026_COMPANY_ANALOG_DEV
1589 && verstep == ADM1026_VERSTEP_ADM1026) {
1590 /* Analog Devices ADM1026 */
1591 } else if (company == ADM1026_COMPANY_ANALOG_DEV
1592 && (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1593 dev_err(&adapter->dev,
1594 "Unrecognized stepping 0x%02x. Defaulting to ADM1026.\n",
1595 verstep);
1596 } else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1597 dev_err(&adapter->dev,
1598 "Found version/stepping 0x%02x. Assuming generic ADM1026.\n",
1599 verstep);
1600 } else {
1601 dev_dbg(&adapter->dev, "Autodetection failed\n");
1602 /* Not an ADM1026... */
1603 return -ENODEV;
1604 }
1605
1606 strlcpy(info->type, "adm1026", I2C_NAME_SIZE);
1607
1608 return 0;
1609 }
1610
1611 static void adm1026_print_gpio(struct i2c_client *client)
1612 {
1613 struct adm1026_data *data = i2c_get_clientdata(client);
1614 int i;
1615
1616 dev_dbg(&client->dev, "GPIO config is:\n");
1617 for (i = 0; i <= 7; ++i) {
1618 if (data->config2 & (1 << i)) {
1619 dev_dbg(&client->dev, "\t%sGP%s%d\n",
1620 data->gpio_config[i] & 0x02 ? "" : "!",
1621 data->gpio_config[i] & 0x01 ? "OUT" : "IN",
1622 i);
1623 } else {
1624 dev_dbg(&client->dev, "\tFAN%d\n", i);
1625 }
1626 }
1627 for (i = 8; i <= 15; ++i) {
1628 dev_dbg(&client->dev, "\t%sGP%s%d\n",
1629 data->gpio_config[i] & 0x02 ? "" : "!",
1630 data->gpio_config[i] & 0x01 ? "OUT" : "IN",
1631 i);
1632 }
1633 if (data->config3 & CFG3_GPIO16_ENABLE) {
1634 dev_dbg(&client->dev, "\t%sGP%s16\n",
1635 data->gpio_config[16] & 0x02 ? "" : "!",
1636 data->gpio_config[16] & 0x01 ? "OUT" : "IN");
1637 } else {
1638 /* GPIO16 is THERM */
1639 dev_dbg(&client->dev, "\tTHERM\n");
1640 }
1641 }
1642
1643 static void adm1026_fixup_gpio(struct i2c_client *client)
1644 {
1645 struct adm1026_data *data = i2c_get_clientdata(client);
1646 int i;
1647 int value;
1648
1649 /* Make the changes requested. */
1650 /*
1651 * We may need to unlock/stop monitoring or soft-reset the
1652 * chip before we can make changes. This hasn't been
1653 * tested much. FIXME
1654 */
1655
1656 /* Make outputs */
1657 for (i = 0; i <= 16; ++i) {
1658 if (gpio_output[i] >= 0 && gpio_output[i] <= 16)
1659 data->gpio_config[gpio_output[i]] |= 0x01;
1660 /* if GPIO0-7 is output, it isn't a FAN tach */
1661 if (gpio_output[i] >= 0 && gpio_output[i] <= 7)
1662 data->config2 |= 1 << gpio_output[i];
1663 }
1664
1665 /* Input overrides output */
1666 for (i = 0; i <= 16; ++i) {
1667 if (gpio_input[i] >= 0 && gpio_input[i] <= 16)
1668 data->gpio_config[gpio_input[i]] &= ~0x01;
1669 /* if GPIO0-7 is input, it isn't a FAN tach */
1670 if (gpio_input[i] >= 0 && gpio_input[i] <= 7)
1671 data->config2 |= 1 << gpio_input[i];
1672 }
1673
1674 /* Inverted */
1675 for (i = 0; i <= 16; ++i) {
1676 if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16)
1677 data->gpio_config[gpio_inverted[i]] &= ~0x02;
1678 }
1679
1680 /* Normal overrides inverted */
1681 for (i = 0; i <= 16; ++i) {
1682 if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16)
1683 data->gpio_config[gpio_normal[i]] |= 0x02;
1684 }
1685
1686 /* Fan overrides input and output */
1687 for (i = 0; i <= 7; ++i) {
1688 if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7)
1689 data->config2 &= ~(1 << gpio_fan[i]);
1690 }
1691
1692 /* Write new configs to registers */
1693 adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
1694 data->config3 = (data->config3 & 0x3f)
1695 | ((data->gpio_config[16] & 0x03) << 6);
1696 adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
1697 for (i = 15, value = 0; i >= 0; --i) {
1698 value <<= 2;
1699 value |= data->gpio_config[i] & 0x03;
1700 if ((i & 0x03) == 0) {
1701 adm1026_write_value(client,
1702 ADM1026_REG_GPIO_CFG_0_3 + i/4,
1703 value);
1704 value = 0;
1705 }
1706 }
1707
1708 /* Print the new config */
1709 adm1026_print_gpio(client);
1710 }
1711
1712 static void adm1026_init_client(struct i2c_client *client)
1713 {
1714 int value, i;
1715 struct adm1026_data *data = i2c_get_clientdata(client);
1716
1717 dev_dbg(&client->dev, "Initializing device\n");
1718 /* Read chip config */
1719 data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
1720 data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
1721 data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
1722
1723 /* Inform user of chip config */
1724 dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
1725 data->config1);
1726 if ((data->config1 & CFG1_MONITOR) == 0) {
1727 dev_dbg(&client->dev,
1728 "Monitoring not currently enabled.\n");
1729 }
1730 if (data->config1 & CFG1_INT_ENABLE) {
1731 dev_dbg(&client->dev,
1732 "SMBALERT interrupts are enabled.\n");
1733 }
1734 if (data->config1 & CFG1_AIN8_9) {
1735 dev_dbg(&client->dev,
1736 "in8 and in9 enabled. temp3 disabled.\n");
1737 } else {
1738 dev_dbg(&client->dev,
1739 "temp3 enabled. in8 and in9 disabled.\n");
1740 }
1741 if (data->config1 & CFG1_THERM_HOT) {
1742 dev_dbg(&client->dev,
1743 "Automatic THERM, PWM, and temp limits enabled.\n");
1744 }
1745
1746 if (data->config3 & CFG3_GPIO16_ENABLE) {
1747 dev_dbg(&client->dev,
1748 "GPIO16 enabled. THERM pin disabled.\n");
1749 } else {
1750 dev_dbg(&client->dev,
1751 "THERM pin enabled. GPIO16 disabled.\n");
1752 }
1753 if (data->config3 & CFG3_VREF_250)
1754 dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
1755 else
1756 dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
1757 /* Read and pick apart the existing GPIO configuration */
1758 value = 0;
1759 for (i = 0; i <= 15; ++i) {
1760 if ((i & 0x03) == 0) {
1761 value = adm1026_read_value(client,
1762 ADM1026_REG_GPIO_CFG_0_3 + i / 4);
1763 }
1764 data->gpio_config[i] = value & 0x03;
1765 value >>= 2;
1766 }
1767 data->gpio_config[16] = (data->config3 >> 6) & 0x03;
1768
1769 /* ... and then print it */
1770 adm1026_print_gpio(client);
1771
1772 /*
1773 * If the user asks us to reprogram the GPIO config, then
1774 * do it now.
1775 */
1776 if (gpio_input[0] != -1 || gpio_output[0] != -1
1777 || gpio_inverted[0] != -1 || gpio_normal[0] != -1
1778 || gpio_fan[0] != -1) {
1779 adm1026_fixup_gpio(client);
1780 }
1781
1782 /*
1783 * WE INTENTIONALLY make no changes to the limits,
1784 * offsets, pwms, fans and zones. If they were
1785 * configured, we don't want to mess with them.
1786 * If they weren't, the default is 100% PWM, no
1787 * control and will suffice until 'sensors -s'
1788 * can be run by the user. We DO set the default
1789 * value for pwm1.auto_pwm_min to its maximum
1790 * so that enabling automatic pwm fan control
1791 * without first setting a value for pwm1.auto_pwm_min
1792 * will not result in potentially dangerous fan speed decrease.
1793 */
1794 data->pwm1.auto_pwm_min = 255;
1795 /* Start monitoring */
1796 value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
1797 /* Set MONITOR, clear interrupt acknowledge and s/w reset */
1798 value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
1799 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
1800 data->config1 = value;
1801 adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
1802
1803 /* initialize fan_div[] to hardware defaults */
1804 value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
1805 (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
1806 for (i = 0; i <= 7; ++i) {
1807 data->fan_div[i] = DIV_FROM_REG(value & 0x03);
1808 value >>= 2;
1809 }
1810 }
1811
1812 static int adm1026_probe(struct i2c_client *client,
1813 const struct i2c_device_id *id)
1814 {
1815 struct device *dev = &client->dev;
1816 struct device *hwmon_dev;
1817 struct adm1026_data *data;
1818
1819 data = devm_kzalloc(dev, sizeof(struct adm1026_data), GFP_KERNEL);
1820 if (!data)
1821 return -ENOMEM;
1822
1823 i2c_set_clientdata(client, data);
1824 data->client = client;
1825 mutex_init(&data->update_lock);
1826
1827 /* Set the VRM version */
1828 data->vrm = vid_which_vrm();
1829
1830 /* Initialize the ADM1026 chip */
1831 adm1026_init_client(client);
1832
1833 /* sysfs hooks */
1834 data->groups[0] = &adm1026_group;
1835 if (data->config1 & CFG1_AIN8_9)
1836 data->groups[1] = &adm1026_group_in8_9;
1837 else
1838 data->groups[1] = &adm1026_group_temp3;
1839
1840 hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
1841 data, data->groups);
1842 return PTR_ERR_OR_ZERO(hwmon_dev);
1843 }
1844
1845 static const struct i2c_device_id adm1026_id[] = {
1846 { "adm1026", 0 },
1847 { }
1848 };
1849 MODULE_DEVICE_TABLE(i2c, adm1026_id);
1850
1851 static struct i2c_driver adm1026_driver = {
1852 .class = I2C_CLASS_HWMON,
1853 .driver = {
1854 .name = "adm1026",
1855 },
1856 .probe = adm1026_probe,
1857 .id_table = adm1026_id,
1858 .detect = adm1026_detect,
1859 .address_list = normal_i2c,
1860 };
1861
1862 module_i2c_driver(adm1026_driver);
1863
1864 MODULE_LICENSE("GPL");
1865 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1866 "Justin Thiessen <jthiessen@penguincomputing.com>");
1867 MODULE_DESCRIPTION("ADM1026 driver");
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