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Merge tag 'gpio-v3.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
[linux-2.6.git] / drivers / hwmon / adm1026.c
blobb3498acb9ab4823556edea591b1d8d3489667e1e
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) (clamp_val(SCALE(val, adm1026_scaling[n], 192),\
201 0, 255))
202 #define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
203
204 /*
205 * FAN speed is measured using 22.5kHz clock and counts for 2 pulses
206 * and we assume a 2 pulse-per-rev fan tach signal
207 * 22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
208 */
209 #define FAN_TO_REG(val, div) ((val) <= 0 ? 0xff : \
210 clamp_val(1350000 / ((val) * (div)), \
211 1, 254))
212 #define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 0xff ? 0 : \
213 1350000 / ((val) * (div)))
214 #define DIV_FROM_REG(val) (1 << (val))
215 #define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
216
217 /* Temperature is reported in 1 degC increments */
218 #define TEMP_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
219 / 1000, -127, 127))
220 #define TEMP_FROM_REG(val) ((val) * 1000)
221 #define OFFSET_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
222 / 1000, -127, 127))
223 #define OFFSET_FROM_REG(val) ((val) * 1000)
224
225 #define PWM_TO_REG(val) (clamp_val(val, 0, 255))
226 #define PWM_FROM_REG(val) (val)
227
228 #define PWM_MIN_TO_REG(val) ((val) & 0xf0)
229 #define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
230
231 /*
232 * Analog output is a voltage, and scaled to millivolts. The datasheet
233 * indicates that the DAC could be used to drive the fans, but in our
234 * example board (Arima HDAMA) it isn't connected to the fans at all.
235 */
236 #define DAC_TO_REG(val) (clamp_val(((((val) * 255) + 500) / 2500), 0, 255))
237 #define DAC_FROM_REG(val) (((val) * 2500) / 255)
238
239 /*
240 * Chip sampling rates
241 *
242 * Some sensors are not updated more frequently than once per second
243 * so it doesn't make sense to read them more often than that.
244 * We cache the results and return the saved data if the driver
245 * is called again before a second has elapsed.
246 *
247 * Also, there is significant configuration data for this chip
248 * So, we keep the config data up to date in the cache
249 * when it is written and only sample it once every 5 *minutes*
250 */
251 #define ADM1026_DATA_INTERVAL (1 * HZ)
252 #define ADM1026_CONFIG_INTERVAL (5 * 60 * HZ)
253
254 /*
255 * We allow for multiple chips in a single system.
256 *
257 * For each registered ADM1026, we need to keep state information
258 * at client->data. The adm1026_data structure is dynamically
259 * allocated, when a new client structure is allocated.
260 */
261
262 struct pwm_data {
263 u8 pwm;
264 u8 enable;
265 u8 auto_pwm_min;
266 };
267
268 struct adm1026_data {
269 struct device *hwmon_dev;
270
271 struct mutex update_lock;
272 int valid; /* !=0 if following fields are valid */
273 unsigned long last_reading; /* In jiffies */
274 unsigned long last_config; /* In jiffies */
275
276 u8 in[17]; /* Register value */
277 u8 in_max[17]; /* Register value */
278 u8 in_min[17]; /* Register value */
279 s8 temp[3]; /* Register value */
280 s8 temp_min[3]; /* Register value */
281 s8 temp_max[3]; /* Register value */
282 s8 temp_tmin[3]; /* Register value */
283 s8 temp_crit[3]; /* Register value */
284 s8 temp_offset[3]; /* Register value */
285 u8 fan[8]; /* Register value */
286 u8 fan_min[8]; /* Register value */
287 u8 fan_div[8]; /* Decoded value */
288 struct pwm_data pwm1; /* Pwm control values */
289 u8 vrm; /* VRM version */
290 u8 analog_out; /* Register value (DAC) */
291 long alarms; /* Register encoding, combined */
292 long alarm_mask; /* Register encoding, combined */
293 long gpio; /* Register encoding, combined */
294 long gpio_mask; /* Register encoding, combined */
295 u8 gpio_config[17]; /* Decoded value */
296 u8 config1; /* Register value */
297 u8 config2; /* Register value */
298 u8 config3; /* Register value */
299 };
300
301 static int adm1026_probe(struct i2c_client *client,
302 const struct i2c_device_id *id);
303 static int adm1026_detect(struct i2c_client *client,
304 struct i2c_board_info *info);
305 static int adm1026_remove(struct i2c_client *client);
306 static int adm1026_read_value(struct i2c_client *client, u8 reg);
307 static int adm1026_write_value(struct i2c_client *client, u8 reg, int value);
308 static void adm1026_print_gpio(struct i2c_client *client);
309 static void adm1026_fixup_gpio(struct i2c_client *client);
310 static struct adm1026_data *adm1026_update_device(struct device *dev);
311 static void adm1026_init_client(struct i2c_client *client);
312
313
314 static const struct i2c_device_id adm1026_id[] = {
315 { "adm1026", 0 },
316 { }
317 };
318 MODULE_DEVICE_TABLE(i2c, adm1026_id);
319
320 static struct i2c_driver adm1026_driver = {
321 .class = I2C_CLASS_HWMON,
322 .driver = {
323 .name = "adm1026",
324 },
325 .probe = adm1026_probe,
326 .remove = adm1026_remove,
327 .id_table = adm1026_id,
328 .detect = adm1026_detect,
329 .address_list = normal_i2c,
330 };
331
332 static int adm1026_read_value(struct i2c_client *client, u8 reg)
333 {
334 int res;
335
336 if (reg < 0x80) {
337 /* "RAM" locations */
338 res = i2c_smbus_read_byte_data(client, reg) & 0xff;
339 } else {
340 /* EEPROM, do nothing */
341 res = 0;
342 }
343 return res;
344 }
345
346 static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
347 {
348 int res;
349
350 if (reg < 0x80) {
351 /* "RAM" locations */
352 res = i2c_smbus_write_byte_data(client, reg, value);
353 } else {
354 /* EEPROM, do nothing */
355 res = 0;
356 }
357 return res;
358 }
359
360 static void adm1026_init_client(struct i2c_client *client)
361 {
362 int value, i;
363 struct adm1026_data *data = i2c_get_clientdata(client);
364
365 dev_dbg(&client->dev, "Initializing device\n");
366 /* Read chip config */
367 data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
368 data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
369 data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
370
371 /* Inform user of chip config */
372 dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
373 data->config1);
374 if ((data->config1 & CFG1_MONITOR) == 0) {
375 dev_dbg(&client->dev,
376 "Monitoring not currently enabled.\n");
377 }
378 if (data->config1 & CFG1_INT_ENABLE) {
379 dev_dbg(&client->dev,
380 "SMBALERT interrupts are enabled.\n");
381 }
382 if (data->config1 & CFG1_AIN8_9) {
383 dev_dbg(&client->dev,
384 "in8 and in9 enabled. temp3 disabled.\n");
385 } else {
386 dev_dbg(&client->dev,
387 "temp3 enabled. in8 and in9 disabled.\n");
388 }
389 if (data->config1 & CFG1_THERM_HOT) {
390 dev_dbg(&client->dev,
391 "Automatic THERM, PWM, and temp limits enabled.\n");
392 }
393
394 if (data->config3 & CFG3_GPIO16_ENABLE) {
395 dev_dbg(&client->dev,
396 "GPIO16 enabled. THERM pin disabled.\n");
397 } else {
398 dev_dbg(&client->dev,
399 "THERM pin enabled. GPIO16 disabled.\n");
400 }
401 if (data->config3 & CFG3_VREF_250)
402 dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
403 else
404 dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
405 /* Read and pick apart the existing GPIO configuration */
406 value = 0;
407 for (i = 0; i <= 15; ++i) {
408 if ((i & 0x03) == 0) {
409 value = adm1026_read_value(client,
410 ADM1026_REG_GPIO_CFG_0_3 + i / 4);
411 }
412 data->gpio_config[i] = value & 0x03;
413 value >>= 2;
414 }
415 data->gpio_config[16] = (data->config3 >> 6) & 0x03;
416
417 /* ... and then print it */
418 adm1026_print_gpio(client);
419
420 /*
421 * If the user asks us to reprogram the GPIO config, then
422 * do it now.
423 */
424 if (gpio_input[0] != -1 || gpio_output[0] != -1
425 || gpio_inverted[0] != -1 || gpio_normal[0] != -1
426 || gpio_fan[0] != -1) {
427 adm1026_fixup_gpio(client);
428 }
429
430 /*
431 * WE INTENTIONALLY make no changes to the limits,
432 * offsets, pwms, fans and zones. If they were
433 * configured, we don't want to mess with them.
434 * If they weren't, the default is 100% PWM, no
435 * control and will suffice until 'sensors -s'
436 * can be run by the user. We DO set the default
437 * value for pwm1.auto_pwm_min to its maximum
438 * so that enabling automatic pwm fan control
439 * without first setting a value for pwm1.auto_pwm_min
440 * will not result in potentially dangerous fan speed decrease.
441 */
442 data->pwm1.auto_pwm_min = 255;
443 /* Start monitoring */
444 value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
445 /* Set MONITOR, clear interrupt acknowledge and s/w reset */
446 value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
447 dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
448 data->config1 = value;
449 adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
450
451 /* initialize fan_div[] to hardware defaults */
452 value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
453 (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
454 for (i = 0; i <= 7; ++i) {
455 data->fan_div[i] = DIV_FROM_REG(value & 0x03);
456 value >>= 2;
457 }
458 }
459
460 static void adm1026_print_gpio(struct i2c_client *client)
461 {
462 struct adm1026_data *data = i2c_get_clientdata(client);
463 int i;
464
465 dev_dbg(&client->dev, "GPIO config is:\n");
466 for (i = 0; i <= 7; ++i) {
467 if (data->config2 & (1 << i)) {
468 dev_dbg(&client->dev, "\t%sGP%s%d\n",
469 data->gpio_config[i] & 0x02 ? "" : "!",
470 data->gpio_config[i] & 0x01 ? "OUT" : "IN",
471 i);
472 } else {
473 dev_dbg(&client->dev, "\tFAN%d\n", i);
474 }
475 }
476 for (i = 8; i <= 15; ++i) {
477 dev_dbg(&client->dev, "\t%sGP%s%d\n",
478 data->gpio_config[i] & 0x02 ? "" : "!",
479 data->gpio_config[i] & 0x01 ? "OUT" : "IN",
480 i);
481 }
482 if (data->config3 & CFG3_GPIO16_ENABLE) {
483 dev_dbg(&client->dev, "\t%sGP%s16\n",
484 data->gpio_config[16] & 0x02 ? "" : "!",
485 data->gpio_config[16] & 0x01 ? "OUT" : "IN");
486 } else {
487 /* GPIO16 is THERM */
488 dev_dbg(&client->dev, "\tTHERM\n");
489 }
490 }
491
492 static void adm1026_fixup_gpio(struct i2c_client *client)
493 {
494 struct adm1026_data *data = i2c_get_clientdata(client);
495 int i;
496 int value;
497
498 /* Make the changes requested. */
499 /*
500 * We may need to unlock/stop monitoring or soft-reset the
501 * chip before we can make changes. This hasn't been
502 * tested much. FIXME
503 */
504
505 /* Make outputs */
506 for (i = 0; i <= 16; ++i) {
507 if (gpio_output[i] >= 0 && gpio_output[i] <= 16)
508 data->gpio_config[gpio_output[i]] |= 0x01;
509 /* if GPIO0-7 is output, it isn't a FAN tach */
510 if (gpio_output[i] >= 0 && gpio_output[i] <= 7)
511 data->config2 |= 1 << gpio_output[i];
512 }
513
514 /* Input overrides output */
515 for (i = 0; i <= 16; ++i) {
516 if (gpio_input[i] >= 0 && gpio_input[i] <= 16)
517 data->gpio_config[gpio_input[i]] &= ~0x01;
518 /* if GPIO0-7 is input, it isn't a FAN tach */
519 if (gpio_input[i] >= 0 && gpio_input[i] <= 7)
520 data->config2 |= 1 << gpio_input[i];
521 }
522
523 /* Inverted */
524 for (i = 0; i <= 16; ++i) {
525 if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16)
526 data->gpio_config[gpio_inverted[i]] &= ~0x02;
527 }
528
529 /* Normal overrides inverted */
530 for (i = 0; i <= 16; ++i) {
531 if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16)
532 data->gpio_config[gpio_normal[i]] |= 0x02;
533 }
534
535 /* Fan overrides input and output */
536 for (i = 0; i <= 7; ++i) {
537 if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7)
538 data->config2 &= ~(1 << gpio_fan[i]);
539 }
540
541 /* Write new configs to registers */
542 adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
543 data->config3 = (data->config3 & 0x3f)
544 | ((data->gpio_config[16] & 0x03) << 6);
545 adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
546 for (i = 15, value = 0; i >= 0; --i) {
547 value <<= 2;
548 value |= data->gpio_config[i] & 0x03;
549 if ((i & 0x03) == 0) {
550 adm1026_write_value(client,
551 ADM1026_REG_GPIO_CFG_0_3 + i/4,
552 value);
553 value = 0;
554 }
555 }
556
557 /* Print the new config */
558 adm1026_print_gpio(client);
559 }
560
561
562 static struct adm1026_data *adm1026_update_device(struct device *dev)
563 {
564 struct i2c_client *client = to_i2c_client(dev);
565 struct adm1026_data *data = i2c_get_clientdata(client);
566 int i;
567 long value, alarms, gpio;
568
569 mutex_lock(&data->update_lock);
570 if (!data->valid
571 || time_after(jiffies,
572 data->last_reading + ADM1026_DATA_INTERVAL)) {
573 /* Things that change quickly */
574 dev_dbg(&client->dev, "Reading sensor values\n");
575 for (i = 0; i <= 16; ++i) {
576 data->in[i] =
577 adm1026_read_value(client, ADM1026_REG_IN[i]);
578 }
579
580 for (i = 0; i <= 7; ++i) {
581 data->fan[i] =
582 adm1026_read_value(client, ADM1026_REG_FAN(i));
583 }
584
585 for (i = 0; i <= 2; ++i) {
586 /*
587 * NOTE: temp[] is s8 and we assume 2's complement
588 * "conversion" in the assignment
589 */
590 data->temp[i] =
591 adm1026_read_value(client, ADM1026_REG_TEMP[i]);
592 }
593
594 data->pwm1.pwm = adm1026_read_value(client,
595 ADM1026_REG_PWM);
596 data->analog_out = adm1026_read_value(client,
597 ADM1026_REG_DAC);
598 /* GPIO16 is MSbit of alarms, move it to gpio */
599 alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
600 gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
601 alarms &= 0x7f;
602 alarms <<= 8;
603 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
604 alarms <<= 8;
605 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
606 alarms <<= 8;
607 alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
608 data->alarms = alarms;
609
610 /* Read the GPIO values */
611 gpio |= adm1026_read_value(client,
612 ADM1026_REG_GPIO_STATUS_8_15);
613 gpio <<= 8;
614 gpio |= adm1026_read_value(client,
615 ADM1026_REG_GPIO_STATUS_0_7);
616 data->gpio = gpio;
617
618 data->last_reading = jiffies;
619 } /* last_reading */
620
621 if (!data->valid ||
622 time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
623 /* Things that don't change often */
624 dev_dbg(&client->dev, "Reading config values\n");
625 for (i = 0; i <= 16; ++i) {
626 data->in_min[i] = adm1026_read_value(client,
627 ADM1026_REG_IN_MIN[i]);
628 data->in_max[i] = adm1026_read_value(client,
629 ADM1026_REG_IN_MAX[i]);
630 }
631
632 value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
633 | (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
634 << 8);
635 for (i = 0; i <= 7; ++i) {
636 data->fan_min[i] = adm1026_read_value(client,
637 ADM1026_REG_FAN_MIN(i));
638 data->fan_div[i] = DIV_FROM_REG(value & 0x03);
639 value >>= 2;
640 }
641
642 for (i = 0; i <= 2; ++i) {
643 /*
644 * NOTE: temp_xxx[] are s8 and we assume 2's
645 * complement "conversion" in the assignment
646 */
647 data->temp_min[i] = adm1026_read_value(client,
648 ADM1026_REG_TEMP_MIN[i]);
649 data->temp_max[i] = adm1026_read_value(client,
650 ADM1026_REG_TEMP_MAX[i]);
651 data->temp_tmin[i] = adm1026_read_value(client,
652 ADM1026_REG_TEMP_TMIN[i]);
653 data->temp_crit[i] = adm1026_read_value(client,
654 ADM1026_REG_TEMP_THERM[i]);
655 data->temp_offset[i] = adm1026_read_value(client,
656 ADM1026_REG_TEMP_OFFSET[i]);
657 }
658
659 /* Read the STATUS/alarm masks */
660 alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
661 gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
662 alarms = (alarms & 0x7f) << 8;
663 alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
664 alarms <<= 8;
665 alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
666 alarms <<= 8;
667 alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
668 data->alarm_mask = alarms;
669
670 /* Read the GPIO values */
671 gpio |= adm1026_read_value(client,
672 ADM1026_REG_GPIO_MASK_8_15);
673 gpio <<= 8;
674 gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
675 data->gpio_mask = gpio;
676
677 /* Read various values from CONFIG1 */
678 data->config1 = adm1026_read_value(client,
679 ADM1026_REG_CONFIG1);
680 if (data->config1 & CFG1_PWM_AFC) {
681 data->pwm1.enable = 2;
682 data->pwm1.auto_pwm_min =
683 PWM_MIN_FROM_REG(data->pwm1.pwm);
684 }
685 /* Read the GPIO config */
686 data->config2 = adm1026_read_value(client,
687 ADM1026_REG_CONFIG2);
688 data->config3 = adm1026_read_value(client,
689 ADM1026_REG_CONFIG3);
690 data->gpio_config[16] = (data->config3 >> 6) & 0x03;
691
692 value = 0;
693 for (i = 0; i <= 15; ++i) {
694 if ((i & 0x03) == 0) {
695 value = adm1026_read_value(client,
696 ADM1026_REG_GPIO_CFG_0_3 + i/4);
697 }
698 data->gpio_config[i] = value & 0x03;
699 value >>= 2;
700 }
701
702 data->last_config = jiffies;
703 } /* last_config */
704
705 data->valid = 1;
706 mutex_unlock(&data->update_lock);
707 return data;
708 }
709
710 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
711 char *buf)
712 {
713 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
714 int nr = sensor_attr->index;
715 struct adm1026_data *data = adm1026_update_device(dev);
716 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
717 }
718 static ssize_t show_in_min(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", INS_FROM_REG(nr, data->in_min[nr]));
725 }
726 static ssize_t set_in_min(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 i2c_client *client = to_i2c_client(dev);
732 struct adm1026_data *data = i2c_get_clientdata(client);
733 long val;
734 int err;
735
736 err = kstrtol(buf, 10, &val);
737 if (err)
738 return err;
739
740 mutex_lock(&data->update_lock);
741 data->in_min[nr] = INS_TO_REG(nr, val);
742 adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
743 mutex_unlock(&data->update_lock);
744 return count;
745 }
746 static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
747 char *buf)
748 {
749 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
750 int nr = sensor_attr->index;
751 struct adm1026_data *data = adm1026_update_device(dev);
752 return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
753 }
754 static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
755 const char *buf, size_t count)
756 {
757 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
758 int nr = sensor_attr->index;
759 struct i2c_client *client = to_i2c_client(dev);
760 struct adm1026_data *data = i2c_get_clientdata(client);
761 long val;
762 int err;
763
764 err = kstrtol(buf, 10, &val);
765 if (err)
766 return err;
767
768 mutex_lock(&data->update_lock);
769 data->in_max[nr] = INS_TO_REG(nr, val);
770 adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
771 mutex_unlock(&data->update_lock);
772 return count;
773 }
774
775 #define in_reg(offset) \
776 static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
777 NULL, offset); \
778 static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
779 show_in_min, set_in_min, offset); \
780 static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
781 show_in_max, set_in_max, offset);
782
783
784 in_reg(0);
785 in_reg(1);
786 in_reg(2);
787 in_reg(3);
788 in_reg(4);
789 in_reg(5);
790 in_reg(6);
791 in_reg(7);
792 in_reg(8);
793 in_reg(9);
794 in_reg(10);
795 in_reg(11);
796 in_reg(12);
797 in_reg(13);
798 in_reg(14);
799 in_reg(15);
800
801 static ssize_t show_in16(struct device *dev, struct device_attribute *attr,
802 char *buf)
803 {
804 struct adm1026_data *data = adm1026_update_device(dev);
805 return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
806 NEG12_OFFSET);
807 }
808 static ssize_t show_in16_min(struct device *dev, struct device_attribute *attr,
809 char *buf)
810 {
811 struct adm1026_data *data = adm1026_update_device(dev);
812 return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
813 - NEG12_OFFSET);
814 }
815 static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr,
816 const char *buf, size_t count)
817 {
818 struct i2c_client *client = to_i2c_client(dev);
819 struct adm1026_data *data = i2c_get_clientdata(client);
820 long val;
821 int err;
822
823 err = kstrtol(buf, 10, &val);
824 if (err)
825 return err;
826
827 mutex_lock(&data->update_lock);
828 data->in_min[16] = INS_TO_REG(16, val + NEG12_OFFSET);
829 adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
830 mutex_unlock(&data->update_lock);
831 return count;
832 }
833 static ssize_t show_in16_max(struct device *dev, struct device_attribute *attr,
834 char *buf)
835 {
836 struct adm1026_data *data = adm1026_update_device(dev);
837 return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
838 - NEG12_OFFSET);
839 }
840 static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr,
841 const char *buf, size_t count)
842 {
843 struct i2c_client *client = to_i2c_client(dev);
844 struct adm1026_data *data = i2c_get_clientdata(client);
845 long val;
846 int err;
847
848 err = kstrtol(buf, 10, &val);
849 if (err)
850 return err;
851
852 mutex_lock(&data->update_lock);
853 data->in_max[16] = INS_TO_REG(16, val+NEG12_OFFSET);
854 adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
855 mutex_unlock(&data->update_lock);
856 return count;
857 }
858
859 static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, show_in16, NULL, 16);
860 static SENSOR_DEVICE_ATTR(in16_min, S_IRUGO | S_IWUSR, show_in16_min,
861 set_in16_min, 16);
862 static SENSOR_DEVICE_ATTR(in16_max, S_IRUGO | S_IWUSR, show_in16_max,
863 set_in16_max, 16);
864
865
866 /* Now add fan read/write functions */
867
868 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
869 char *buf)
870 {
871 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
872 int nr = sensor_attr->index;
873 struct adm1026_data *data = adm1026_update_device(dev);
874 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
875 data->fan_div[nr]));
876 }
877 static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
878 char *buf)
879 {
880 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
881 int nr = sensor_attr->index;
882 struct adm1026_data *data = adm1026_update_device(dev);
883 return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
884 data->fan_div[nr]));
885 }
886 static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
887 const char *buf, size_t count)
888 {
889 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
890 int nr = sensor_attr->index;
891 struct i2c_client *client = to_i2c_client(dev);
892 struct adm1026_data *data = i2c_get_clientdata(client);
893 long val;
894 int err;
895
896 err = kstrtol(buf, 10, &val);
897 if (err)
898 return err;
899
900 mutex_lock(&data->update_lock);
901 data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
902 adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
903 data->fan_min[nr]);
904 mutex_unlock(&data->update_lock);
905 return count;
906 }
907
908 #define fan_offset(offset) \
909 static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
910 offset - 1); \
911 static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
912 show_fan_min, set_fan_min, offset - 1);
913
914 fan_offset(1);
915 fan_offset(2);
916 fan_offset(3);
917 fan_offset(4);
918 fan_offset(5);
919 fan_offset(6);
920 fan_offset(7);
921 fan_offset(8);
922
923 /* Adjust fan_min to account for new fan divisor */
924 static void fixup_fan_min(struct device *dev, int fan, int old_div)
925 {
926 struct i2c_client *client = to_i2c_client(dev);
927 struct adm1026_data *data = i2c_get_clientdata(client);
928 int new_min;
929 int new_div = data->fan_div[fan];
930
931 /* 0 and 0xff are special. Don't adjust them */
932 if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff)
933 return;
934
935 new_min = data->fan_min[fan] * old_div / new_div;
936 new_min = clamp_val(new_min, 1, 254);
937 data->fan_min[fan] = new_min;
938 adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
939 }
940
941 /* Now add fan_div read/write functions */
942 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
943 char *buf)
944 {
945 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
946 int nr = sensor_attr->index;
947 struct adm1026_data *data = adm1026_update_device(dev);
948 return sprintf(buf, "%d\n", data->fan_div[nr]);
949 }
950 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
951 const char *buf, size_t count)
952 {
953 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
954 int nr = sensor_attr->index;
955 struct i2c_client *client = to_i2c_client(dev);
956 struct adm1026_data *data = i2c_get_clientdata(client);
957 long val;
958 int orig_div, new_div;
959 int err;
960
961 err = kstrtol(buf, 10, &val);
962 if (err)
963 return err;
964
965 new_div = DIV_TO_REG(val);
966
967 mutex_lock(&data->update_lock);
968 orig_div = data->fan_div[nr];
969 data->fan_div[nr] = DIV_FROM_REG(new_div);
970
971 if (nr < 4) { /* 0 <= nr < 4 */
972 adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
973 (DIV_TO_REG(data->fan_div[0]) << 0) |
974 (DIV_TO_REG(data->fan_div[1]) << 2) |
975 (DIV_TO_REG(data->fan_div[2]) << 4) |
976 (DIV_TO_REG(data->fan_div[3]) << 6));
977 } else { /* 3 < nr < 8 */
978 adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
979 (DIV_TO_REG(data->fan_div[4]) << 0) |
980 (DIV_TO_REG(data->fan_div[5]) << 2) |
981 (DIV_TO_REG(data->fan_div[6]) << 4) |
982 (DIV_TO_REG(data->fan_div[7]) << 6));
983 }
984
985 if (data->fan_div[nr] != orig_div)
986 fixup_fan_min(dev, nr, orig_div);
987
988 mutex_unlock(&data->update_lock);
989 return count;
990 }
991
992 #define fan_offset_div(offset) \
993 static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
994 show_fan_div, set_fan_div, offset - 1);
995
996 fan_offset_div(1);
997 fan_offset_div(2);
998 fan_offset_div(3);
999 fan_offset_div(4);
1000 fan_offset_div(5);
1001 fan_offset_div(6);
1002 fan_offset_div(7);
1003 fan_offset_div(8);
1004
1005 /* Temps */
1006 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
1007 char *buf)
1008 {
1009 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1010 int nr = sensor_attr->index;
1011 struct adm1026_data *data = adm1026_update_device(dev);
1012 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
1013 }
1014 static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
1015 char *buf)
1016 {
1017 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1018 int nr = sensor_attr->index;
1019 struct adm1026_data *data = adm1026_update_device(dev);
1020 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
1021 }
1022 static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
1023 const char *buf, size_t count)
1024 {
1025 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1026 int nr = sensor_attr->index;
1027 struct i2c_client *client = to_i2c_client(dev);
1028 struct adm1026_data *data = i2c_get_clientdata(client);
1029 long val;
1030 int err;
1031
1032 err = kstrtol(buf, 10, &val);
1033 if (err)
1034 return err;
1035
1036 mutex_lock(&data->update_lock);
1037 data->temp_min[nr] = TEMP_TO_REG(val);
1038 adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
1039 data->temp_min[nr]);
1040 mutex_unlock(&data->update_lock);
1041 return count;
1042 }
1043 static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
1044 char *buf)
1045 {
1046 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1047 int nr = sensor_attr->index;
1048 struct adm1026_data *data = adm1026_update_device(dev);
1049 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
1050 }
1051 static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
1052 const char *buf, size_t count)
1053 {
1054 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1055 int nr = sensor_attr->index;
1056 struct i2c_client *client = to_i2c_client(dev);
1057 struct adm1026_data *data = i2c_get_clientdata(client);
1058 long val;
1059 int err;
1060
1061 err = kstrtol(buf, 10, &val);
1062 if (err)
1063 return err;
1064
1065 mutex_lock(&data->update_lock);
1066 data->temp_max[nr] = TEMP_TO_REG(val);
1067 adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
1068 data->temp_max[nr]);
1069 mutex_unlock(&data->update_lock);
1070 return count;
1071 }
1072
1073 #define temp_reg(offset) \
1074 static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \
1075 NULL, offset - 1); \
1076 static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
1077 show_temp_min, set_temp_min, offset - 1); \
1078 static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
1079 show_temp_max, set_temp_max, offset - 1);
1080
1081
1082 temp_reg(1);
1083 temp_reg(2);
1084 temp_reg(3);
1085
1086 static ssize_t show_temp_offset(struct device *dev,
1087 struct device_attribute *attr, char *buf)
1088 {
1089 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1090 int nr = sensor_attr->index;
1091 struct adm1026_data *data = adm1026_update_device(dev);
1092 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
1093 }
1094 static ssize_t set_temp_offset(struct device *dev,
1095 struct device_attribute *attr, const char *buf,
1096 size_t count)
1097 {
1098 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1099 int nr = sensor_attr->index;
1100 struct i2c_client *client = to_i2c_client(dev);
1101 struct adm1026_data *data = i2c_get_clientdata(client);
1102 long val;
1103 int err;
1104
1105 err = kstrtol(buf, 10, &val);
1106 if (err)
1107 return err;
1108
1109 mutex_lock(&data->update_lock);
1110 data->temp_offset[nr] = TEMP_TO_REG(val);
1111 adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
1112 data->temp_offset[nr]);
1113 mutex_unlock(&data->update_lock);
1114 return count;
1115 }
1116
1117 #define temp_offset_reg(offset) \
1118 static SENSOR_DEVICE_ATTR(temp##offset##_offset, S_IRUGO | S_IWUSR, \
1119 show_temp_offset, set_temp_offset, offset - 1);
1120
1121 temp_offset_reg(1);
1122 temp_offset_reg(2);
1123 temp_offset_reg(3);
1124
1125 static ssize_t show_temp_auto_point1_temp_hyst(struct device *dev,
1126 struct device_attribute *attr, char *buf)
1127 {
1128 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1129 int nr = sensor_attr->index;
1130 struct adm1026_data *data = adm1026_update_device(dev);
1131 return sprintf(buf, "%d\n", TEMP_FROM_REG(
1132 ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
1133 }
1134 static ssize_t show_temp_auto_point2_temp(struct device *dev,
1135 struct device_attribute *attr, char *buf)
1136 {
1137 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1138 int nr = sensor_attr->index;
1139 struct adm1026_data *data = adm1026_update_device(dev);
1140 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
1141 ADM1026_FAN_CONTROL_TEMP_RANGE));
1142 }
1143 static ssize_t show_temp_auto_point1_temp(struct device *dev,
1144 struct device_attribute *attr, char *buf)
1145 {
1146 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1147 int nr = sensor_attr->index;
1148 struct adm1026_data *data = adm1026_update_device(dev);
1149 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
1150 }
1151 static ssize_t set_temp_auto_point1_temp(struct device *dev,
1152 struct device_attribute *attr, const char *buf, size_t count)
1153 {
1154 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1155 int nr = sensor_attr->index;
1156 struct i2c_client *client = to_i2c_client(dev);
1157 struct adm1026_data *data = i2c_get_clientdata(client);
1158 long val;
1159 int err;
1160
1161 err = kstrtol(buf, 10, &val);
1162 if (err)
1163 return err;
1164
1165 mutex_lock(&data->update_lock);
1166 data->temp_tmin[nr] = TEMP_TO_REG(val);
1167 adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
1168 data->temp_tmin[nr]);
1169 mutex_unlock(&data->update_lock);
1170 return count;
1171 }
1172
1173 #define temp_auto_point(offset) \
1174 static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp, \
1175 S_IRUGO | S_IWUSR, show_temp_auto_point1_temp, \
1176 set_temp_auto_point1_temp, offset - 1); \
1177 static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp_hyst, S_IRUGO,\
1178 show_temp_auto_point1_temp_hyst, NULL, offset - 1); \
1179 static SENSOR_DEVICE_ATTR(temp##offset##_auto_point2_temp, S_IRUGO, \
1180 show_temp_auto_point2_temp, NULL, offset - 1);
1181
1182 temp_auto_point(1);
1183 temp_auto_point(2);
1184 temp_auto_point(3);
1185
1186 static ssize_t show_temp_crit_enable(struct device *dev,
1187 struct device_attribute *attr, char *buf)
1188 {
1189 struct adm1026_data *data = adm1026_update_device(dev);
1190 return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
1191 }
1192 static ssize_t set_temp_crit_enable(struct device *dev,
1193 struct device_attribute *attr, const char *buf, size_t count)
1194 {
1195 struct i2c_client *client = to_i2c_client(dev);
1196 struct adm1026_data *data = i2c_get_clientdata(client);
1197 unsigned long val;
1198 int err;
1199
1200 err = kstrtoul(buf, 10, &val);
1201 if (err)
1202 return err;
1203
1204 if (val > 1)
1205 return -EINVAL;
1206
1207 mutex_lock(&data->update_lock);
1208 data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
1209 adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
1210 mutex_unlock(&data->update_lock);
1211
1212 return count;
1213 }
1214
1215 #define temp_crit_enable(offset) \
1216 static DEVICE_ATTR(temp##offset##_crit_enable, S_IRUGO | S_IWUSR, \
1217 show_temp_crit_enable, set_temp_crit_enable);
1218
1219 temp_crit_enable(1);
1220 temp_crit_enable(2);
1221 temp_crit_enable(3);
1222
1223 static ssize_t show_temp_crit(struct device *dev,
1224 struct device_attribute *attr, char *buf)
1225 {
1226 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1227 int nr = sensor_attr->index;
1228 struct adm1026_data *data = adm1026_update_device(dev);
1229 return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
1230 }
1231 static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
1232 const char *buf, size_t count)
1233 {
1234 struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
1235 int nr = sensor_attr->index;
1236 struct i2c_client *client = to_i2c_client(dev);
1237 struct adm1026_data *data = i2c_get_clientdata(client);
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->temp_crit[nr] = TEMP_TO_REG(val);
1247 adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
1248 data->temp_crit[nr]);
1249 mutex_unlock(&data->update_lock);
1250 return count;
1251 }
1252
1253 #define temp_crit_reg(offset) \
1254 static SENSOR_DEVICE_ATTR(temp##offset##_crit, S_IRUGO | S_IWUSR, \
1255 show_temp_crit, set_temp_crit, offset - 1);
1256
1257 temp_crit_reg(1);
1258 temp_crit_reg(2);
1259 temp_crit_reg(3);
1260
1261 static ssize_t show_analog_out_reg(struct device *dev,
1262 struct device_attribute *attr, char *buf)
1263 {
1264 struct adm1026_data *data = adm1026_update_device(dev);
1265 return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
1266 }
1267 static ssize_t set_analog_out_reg(struct device *dev,
1268 struct device_attribute *attr,
1269 const char *buf, size_t count)
1270 {
1271 struct i2c_client *client = to_i2c_client(dev);
1272 struct adm1026_data *data = i2c_get_clientdata(client);
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->analog_out = DAC_TO_REG(val);
1282 adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
1283 mutex_unlock(&data->update_lock);
1284 return count;
1285 }
1286
1287 static DEVICE_ATTR(analog_out, S_IRUGO | S_IWUSR, show_analog_out_reg,
1288 set_analog_out_reg);
1289
1290 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
1291 char *buf)
1292 {
1293 struct adm1026_data *data = adm1026_update_device(dev);
1294 int vid = (data->gpio >> 11) & 0x1f;
1295
1296 dev_dbg(dev, "Setting VID from GPIO11-15.\n");
1297 return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
1298 }
1299
1300 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
1301
1302 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
1303 char *buf)
1304 {
1305 struct adm1026_data *data = dev_get_drvdata(dev);
1306 return sprintf(buf, "%d\n", data->vrm);
1307 }
1308
1309 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
1310 const char *buf, size_t count)
1311 {
1312 struct adm1026_data *data = dev_get_drvdata(dev);
1313 unsigned long val;
1314 int err;
1315
1316 err = kstrtoul(buf, 10, &val);
1317 if (err)
1318 return err;
1319
1320 data->vrm = val;
1321 return count;
1322 }
1323
1324 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
1325
1326 static ssize_t show_alarms_reg(struct device *dev,
1327 struct device_attribute *attr, char *buf)
1328 {
1329 struct adm1026_data *data = adm1026_update_device(dev);
1330 return sprintf(buf, "%ld\n", data->alarms);
1331 }
1332
1333 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
1334
1335 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
1336 char *buf)
1337 {
1338 struct adm1026_data *data = adm1026_update_device(dev);
1339 int bitnr = to_sensor_dev_attr(attr)->index;
1340 return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
1341 }
1342
1343 static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0);
1344 static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 1);
1345 static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 1);
1346 static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 2);
1347 static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 3);
1348 static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 4);
1349 static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 5);
1350 static SENSOR_DEVICE_ATTR(in15_alarm, S_IRUGO, show_alarm, NULL, 6);
1351 static SENSOR_DEVICE_ATTR(in16_alarm, S_IRUGO, show_alarm, NULL, 7);
1352 static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
1353 static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
1354 static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
1355 static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
1356 static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
1357 static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
1358 static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
1359 static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
1360 static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 16);
1361 static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 17);
1362 static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 18);
1363 static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 19);
1364 static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 20);
1365 static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 21);
1366 static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL, 22);
1367 static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL, 23);
1368 static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 24);
1369 static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 25);
1370 static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 26);
1371
1372 static ssize_t show_alarm_mask(struct device *dev,
1373 struct device_attribute *attr, char *buf)
1374 {
1375 struct adm1026_data *data = adm1026_update_device(dev);
1376 return sprintf(buf, "%ld\n", data->alarm_mask);
1377 }
1378 static ssize_t set_alarm_mask(struct device *dev, struct device_attribute *attr,
1379 const char *buf, size_t count)
1380 {
1381 struct i2c_client *client = to_i2c_client(dev);
1382 struct adm1026_data *data = i2c_get_clientdata(client);
1383 unsigned long mask;
1384 long val;
1385 int err;
1386
1387 err = kstrtol(buf, 10, &val);
1388 if (err)
1389 return err;
1390
1391 mutex_lock(&data->update_lock);
1392 data->alarm_mask = val & 0x7fffffff;
1393 mask = data->alarm_mask
1394 | (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
1395 adm1026_write_value(client, ADM1026_REG_MASK1,
1396 mask & 0xff);
1397 mask >>= 8;
1398 adm1026_write_value(client, ADM1026_REG_MASK2,
1399 mask & 0xff);
1400 mask >>= 8;
1401 adm1026_write_value(client, ADM1026_REG_MASK3,
1402 mask & 0xff);
1403 mask >>= 8;
1404 adm1026_write_value(client, ADM1026_REG_MASK4,
1405 mask & 0xff);
1406 mutex_unlock(&data->update_lock);
1407 return count;
1408 }
1409
1410 static DEVICE_ATTR(alarm_mask, S_IRUGO | S_IWUSR, show_alarm_mask,
1411 set_alarm_mask);
1412
1413
1414 static ssize_t show_gpio(struct device *dev, struct device_attribute *attr,
1415 char *buf)
1416 {
1417 struct adm1026_data *data = adm1026_update_device(dev);
1418 return sprintf(buf, "%ld\n", data->gpio);
1419 }
1420 static ssize_t set_gpio(struct device *dev, struct device_attribute *attr,
1421 const char *buf, size_t count)
1422 {
1423 struct i2c_client *client = to_i2c_client(dev);
1424 struct adm1026_data *data = i2c_get_clientdata(client);
1425 long gpio;
1426 long val;
1427 int err;
1428
1429 err = kstrtol(buf, 10, &val);
1430 if (err)
1431 return err;
1432
1433 mutex_lock(&data->update_lock);
1434 data->gpio = val & 0x1ffff;
1435 gpio = data->gpio;
1436 adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
1437 gpio >>= 8;
1438 adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
1439 gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
1440 adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
1441 mutex_unlock(&data->update_lock);
1442 return count;
1443 }
1444
1445 static DEVICE_ATTR(gpio, S_IRUGO | S_IWUSR, show_gpio, set_gpio);
1446
1447 static ssize_t show_gpio_mask(struct device *dev, struct device_attribute *attr,
1448 char *buf)
1449 {
1450 struct adm1026_data *data = adm1026_update_device(dev);
1451 return sprintf(buf, "%ld\n", data->gpio_mask);
1452 }
1453 static ssize_t set_gpio_mask(struct device *dev, struct device_attribute *attr,
1454 const char *buf, size_t count)
1455 {
1456 struct i2c_client *client = to_i2c_client(dev);
1457 struct adm1026_data *data = i2c_get_clientdata(client);
1458 long mask;
1459 long val;
1460 int err;
1461
1462 err = kstrtol(buf, 10, &val);
1463 if (err)
1464 return err;
1465
1466 mutex_lock(&data->update_lock);
1467 data->gpio_mask = val & 0x1ffff;
1468 mask = data->gpio_mask;
1469 adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
1470 mask >>= 8;
1471 adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
1472 mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
1473 adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
1474 mutex_unlock(&data->update_lock);
1475 return count;
1476 }
1477
1478 static DEVICE_ATTR(gpio_mask, S_IRUGO | S_IWUSR, show_gpio_mask, set_gpio_mask);
1479
1480 static ssize_t show_pwm_reg(struct device *dev, struct device_attribute *attr,
1481 char *buf)
1482 {
1483 struct adm1026_data *data = adm1026_update_device(dev);
1484 return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
1485 }
1486
1487 static ssize_t set_pwm_reg(struct device *dev, struct device_attribute *attr,
1488 const char *buf, size_t count)
1489 {
1490 struct i2c_client *client = to_i2c_client(dev);
1491 struct adm1026_data *data = i2c_get_clientdata(client);
1492
1493 if (data->pwm1.enable == 1) {
1494 long val;
1495 int err;
1496
1497 err = kstrtol(buf, 10, &val);
1498 if (err)
1499 return err;
1500
1501 mutex_lock(&data->update_lock);
1502 data->pwm1.pwm = PWM_TO_REG(val);
1503 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1504 mutex_unlock(&data->update_lock);
1505 }
1506 return count;
1507 }
1508
1509 static ssize_t show_auto_pwm_min(struct device *dev,
1510 struct device_attribute *attr, char *buf)
1511 {
1512 struct adm1026_data *data = adm1026_update_device(dev);
1513 return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
1514 }
1515
1516 static ssize_t set_auto_pwm_min(struct device *dev,
1517 struct device_attribute *attr, const char *buf,
1518 size_t count)
1519 {
1520 struct i2c_client *client = to_i2c_client(dev);
1521 struct adm1026_data *data = i2c_get_clientdata(client);
1522 unsigned long val;
1523 int err;
1524
1525 err = kstrtoul(buf, 10, &val);
1526 if (err)
1527 return err;
1528
1529 mutex_lock(&data->update_lock);
1530 data->pwm1.auto_pwm_min = clamp_val(val, 0, 255);
1531 if (data->pwm1.enable == 2) { /* apply immediately */
1532 data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1533 PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1534 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1535 }
1536 mutex_unlock(&data->update_lock);
1537 return count;
1538 }
1539
1540 static ssize_t show_auto_pwm_max(struct device *dev,
1541 struct device_attribute *attr, char *buf)
1542 {
1543 return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
1544 }
1545
1546 static ssize_t show_pwm_enable(struct device *dev,
1547 struct device_attribute *attr, char *buf)
1548 {
1549 struct adm1026_data *data = adm1026_update_device(dev);
1550 return sprintf(buf, "%d\n", data->pwm1.enable);
1551 }
1552
1553 static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
1554 const char *buf, size_t count)
1555 {
1556 struct i2c_client *client = to_i2c_client(dev);
1557 struct adm1026_data *data = i2c_get_clientdata(client);
1558 int old_enable;
1559 unsigned long val;
1560 int err;
1561
1562 err = kstrtoul(buf, 10, &val);
1563 if (err)
1564 return err;
1565
1566 if (val >= 3)
1567 return -EINVAL;
1568
1569 mutex_lock(&data->update_lock);
1570 old_enable = data->pwm1.enable;
1571 data->pwm1.enable = val;
1572 data->config1 = (data->config1 & ~CFG1_PWM_AFC)
1573 | ((val == 2) ? CFG1_PWM_AFC : 0);
1574 adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
1575 if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
1576 data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
1577 PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
1578 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1579 } else if (!((old_enable == 1) && (val == 1))) {
1580 /* set pwm to safe value */
1581 data->pwm1.pwm = 255;
1582 adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
1583 }
1584 mutex_unlock(&data->update_lock);
1585
1586 return count;
1587 }
1588
1589 /* enable PWM fan control */
1590 static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1591 static DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1592 static DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm_reg, set_pwm_reg);
1593 static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1594 set_pwm_enable);
1595 static DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1596 set_pwm_enable);
1597 static DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
1598 set_pwm_enable);
1599 static DEVICE_ATTR(temp1_auto_point1_pwm, S_IRUGO | S_IWUSR,
1600 show_auto_pwm_min, set_auto_pwm_min);
1601 static DEVICE_ATTR(temp2_auto_point1_pwm, S_IRUGO | S_IWUSR,
1602 show_auto_pwm_min, set_auto_pwm_min);
1603 static DEVICE_ATTR(temp3_auto_point1_pwm, S_IRUGO | S_IWUSR,
1604 show_auto_pwm_min, set_auto_pwm_min);
1605
1606 static DEVICE_ATTR(temp1_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1607 static DEVICE_ATTR(temp2_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1608 static DEVICE_ATTR(temp3_auto_point2_pwm, S_IRUGO, show_auto_pwm_max, NULL);
1609
1610 static struct attribute *adm1026_attributes[] = {
1611 &sensor_dev_attr_in0_input.dev_attr.attr,
1612 &sensor_dev_attr_in0_max.dev_attr.attr,
1613 &sensor_dev_attr_in0_min.dev_attr.attr,
1614 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1615 &sensor_dev_attr_in1_input.dev_attr.attr,
1616 &sensor_dev_attr_in1_max.dev_attr.attr,
1617 &sensor_dev_attr_in1_min.dev_attr.attr,
1618 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1619 &sensor_dev_attr_in2_input.dev_attr.attr,
1620 &sensor_dev_attr_in2_max.dev_attr.attr,
1621 &sensor_dev_attr_in2_min.dev_attr.attr,
1622 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1623 &sensor_dev_attr_in3_input.dev_attr.attr,
1624 &sensor_dev_attr_in3_max.dev_attr.attr,
1625 &sensor_dev_attr_in3_min.dev_attr.attr,
1626 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1627 &sensor_dev_attr_in4_input.dev_attr.attr,
1628 &sensor_dev_attr_in4_max.dev_attr.attr,
1629 &sensor_dev_attr_in4_min.dev_attr.attr,
1630 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1631 &sensor_dev_attr_in5_input.dev_attr.attr,
1632 &sensor_dev_attr_in5_max.dev_attr.attr,
1633 &sensor_dev_attr_in5_min.dev_attr.attr,
1634 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1635 &sensor_dev_attr_in6_input.dev_attr.attr,
1636 &sensor_dev_attr_in6_max.dev_attr.attr,
1637 &sensor_dev_attr_in6_min.dev_attr.attr,
1638 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1639 &sensor_dev_attr_in7_input.dev_attr.attr,
1640 &sensor_dev_attr_in7_max.dev_attr.attr,
1641 &sensor_dev_attr_in7_min.dev_attr.attr,
1642 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1643 &sensor_dev_attr_in10_input.dev_attr.attr,
1644 &sensor_dev_attr_in10_max.dev_attr.attr,
1645 &sensor_dev_attr_in10_min.dev_attr.attr,
1646 &sensor_dev_attr_in10_alarm.dev_attr.attr,
1647 &sensor_dev_attr_in11_input.dev_attr.attr,
1648 &sensor_dev_attr_in11_max.dev_attr.attr,
1649 &sensor_dev_attr_in11_min.dev_attr.attr,
1650 &sensor_dev_attr_in11_alarm.dev_attr.attr,
1651 &sensor_dev_attr_in12_input.dev_attr.attr,
1652 &sensor_dev_attr_in12_max.dev_attr.attr,
1653 &sensor_dev_attr_in12_min.dev_attr.attr,
1654 &sensor_dev_attr_in12_alarm.dev_attr.attr,
1655 &sensor_dev_attr_in13_input.dev_attr.attr,
1656 &sensor_dev_attr_in13_max.dev_attr.attr,
1657 &sensor_dev_attr_in13_min.dev_attr.attr,
1658 &sensor_dev_attr_in13_alarm.dev_attr.attr,
1659 &sensor_dev_attr_in14_input.dev_attr.attr,
1660 &sensor_dev_attr_in14_max.dev_attr.attr,
1661 &sensor_dev_attr_in14_min.dev_attr.attr,
1662 &sensor_dev_attr_in14_alarm.dev_attr.attr,
1663 &sensor_dev_attr_in15_input.dev_attr.attr,
1664 &sensor_dev_attr_in15_max.dev_attr.attr,
1665 &sensor_dev_attr_in15_min.dev_attr.attr,
1666 &sensor_dev_attr_in15_alarm.dev_attr.attr,
1667 &sensor_dev_attr_in16_input.dev_attr.attr,
1668 &sensor_dev_attr_in16_max.dev_attr.attr,
1669 &sensor_dev_attr_in16_min.dev_attr.attr,
1670 &sensor_dev_attr_in16_alarm.dev_attr.attr,
1671 &sensor_dev_attr_fan1_input.dev_attr.attr,
1672 &sensor_dev_attr_fan1_div.dev_attr.attr,
1673 &sensor_dev_attr_fan1_min.dev_attr.attr,
1674 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1675 &sensor_dev_attr_fan2_input.dev_attr.attr,
1676 &sensor_dev_attr_fan2_div.dev_attr.attr,
1677 &sensor_dev_attr_fan2_min.dev_attr.attr,
1678 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1679 &sensor_dev_attr_fan3_input.dev_attr.attr,
1680 &sensor_dev_attr_fan3_div.dev_attr.attr,
1681 &sensor_dev_attr_fan3_min.dev_attr.attr,
1682 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1683 &sensor_dev_attr_fan4_input.dev_attr.attr,
1684 &sensor_dev_attr_fan4_div.dev_attr.attr,
1685 &sensor_dev_attr_fan4_min.dev_attr.attr,
1686 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1687 &sensor_dev_attr_fan5_input.dev_attr.attr,
1688 &sensor_dev_attr_fan5_div.dev_attr.attr,
1689 &sensor_dev_attr_fan5_min.dev_attr.attr,
1690 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1691 &sensor_dev_attr_fan6_input.dev_attr.attr,
1692 &sensor_dev_attr_fan6_div.dev_attr.attr,
1693 &sensor_dev_attr_fan6_min.dev_attr.attr,
1694 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1695 &sensor_dev_attr_fan7_input.dev_attr.attr,
1696 &sensor_dev_attr_fan7_div.dev_attr.attr,
1697 &sensor_dev_attr_fan7_min.dev_attr.attr,
1698 &sensor_dev_attr_fan7_alarm.dev_attr.attr,
1699 &sensor_dev_attr_fan8_input.dev_attr.attr,
1700 &sensor_dev_attr_fan8_div.dev_attr.attr,
1701 &sensor_dev_attr_fan8_min.dev_attr.attr,
1702 &sensor_dev_attr_fan8_alarm.dev_attr.attr,
1703 &sensor_dev_attr_temp1_input.dev_attr.attr,
1704 &sensor_dev_attr_temp1_max.dev_attr.attr,
1705 &sensor_dev_attr_temp1_min.dev_attr.attr,
1706 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1707 &sensor_dev_attr_temp2_input.dev_attr.attr,
1708 &sensor_dev_attr_temp2_max.dev_attr.attr,
1709 &sensor_dev_attr_temp2_min.dev_attr.attr,
1710 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1711 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1712 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1713 &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
1714 &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
1715 &sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
1716 &sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
1717 &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
1718 &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
1719 &sensor_dev_attr_temp1_crit.dev_attr.attr,
1720 &sensor_dev_attr_temp2_crit.dev_attr.attr,
1721 &dev_attr_temp1_crit_enable.attr,
1722 &dev_attr_temp2_crit_enable.attr,
1723 &dev_attr_cpu0_vid.attr,
1724 &dev_attr_vrm.attr,
1725 &dev_attr_alarms.attr,
1726 &dev_attr_alarm_mask.attr,
1727 &dev_attr_gpio.attr,
1728 &dev_attr_gpio_mask.attr,
1729 &dev_attr_pwm1.attr,
1730 &dev_attr_pwm2.attr,
1731 &dev_attr_pwm3.attr,
1732 &dev_attr_pwm1_enable.attr,
1733 &dev_attr_pwm2_enable.attr,
1734 &dev_attr_pwm3_enable.attr,
1735 &dev_attr_temp1_auto_point1_pwm.attr,
1736 &dev_attr_temp2_auto_point1_pwm.attr,
1737 &dev_attr_temp1_auto_point2_pwm.attr,
1738 &dev_attr_temp2_auto_point2_pwm.attr,
1739 &dev_attr_analog_out.attr,
1740 NULL
1741 };
1742
1743 static const struct attribute_group adm1026_group = {
1744 .attrs = adm1026_attributes,
1745 };
1746
1747 static struct attribute *adm1026_attributes_temp3[] = {
1748 &sensor_dev_attr_temp3_input.dev_attr.attr,
1749 &sensor_dev_attr_temp3_max.dev_attr.attr,
1750 &sensor_dev_attr_temp3_min.dev_attr.attr,
1751 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1752 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1753 &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
1754 &sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
1755 &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
1756 &sensor_dev_attr_temp3_crit.dev_attr.attr,
1757 &dev_attr_temp3_crit_enable.attr,
1758 &dev_attr_temp3_auto_point1_pwm.attr,
1759 &dev_attr_temp3_auto_point2_pwm.attr,
1760 NULL
1761 };
1762
1763 static const struct attribute_group adm1026_group_temp3 = {
1764 .attrs = adm1026_attributes_temp3,
1765 };
1766
1767 static struct attribute *adm1026_attributes_in8_9[] = {
1768 &sensor_dev_attr_in8_input.dev_attr.attr,
1769 &sensor_dev_attr_in8_max.dev_attr.attr,
1770 &sensor_dev_attr_in8_min.dev_attr.attr,
1771 &sensor_dev_attr_in8_alarm.dev_attr.attr,
1772 &sensor_dev_attr_in9_input.dev_attr.attr,
1773 &sensor_dev_attr_in9_max.dev_attr.attr,
1774 &sensor_dev_attr_in9_min.dev_attr.attr,
1775 &sensor_dev_attr_in9_alarm.dev_attr.attr,
1776 NULL
1777 };
1778
1779 static const struct attribute_group adm1026_group_in8_9 = {
1780 .attrs = adm1026_attributes_in8_9,
1781 };
1782
1783 /* Return 0 if detection is successful, -ENODEV otherwise */
1784 static int adm1026_detect(struct i2c_client *client,
1785 struct i2c_board_info *info)
1786 {
1787 struct i2c_adapter *adapter = client->adapter;
1788 int address = client->addr;
1789 int company, verstep;
1790
1791 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1792 /* We need to be able to do byte I/O */
1793 return -ENODEV;
1794 }
1795
1796 /* Now, we do the remaining detection. */
1797
1798 company = adm1026_read_value(client, ADM1026_REG_COMPANY);
1799 verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);
1800
1801 dev_dbg(&adapter->dev,
1802 "Detecting device at %d,0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1803 i2c_adapter_id(client->adapter), client->addr,
1804 company, verstep);
1805
1806 /* Determine the chip type. */
1807 dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
1808 i2c_adapter_id(adapter), address);
1809 if (company == ADM1026_COMPANY_ANALOG_DEV
1810 && verstep == ADM1026_VERSTEP_ADM1026) {
1811 /* Analog Devices ADM1026 */
1812 } else if (company == ADM1026_COMPANY_ANALOG_DEV
1813 && (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1814 dev_err(&adapter->dev,
1815 "Unrecognized stepping 0x%02x. Defaulting to ADM1026.\n",
1816 verstep);
1817 } else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
1818 dev_err(&adapter->dev,
1819 "Found version/stepping 0x%02x. Assuming generic ADM1026.\n",
1820 verstep);
1821 } else {
1822 dev_dbg(&adapter->dev, "Autodetection failed\n");
1823 /* Not an ADM1026... */
1824 return -ENODEV;
1825 }
1826
1827 strlcpy(info->type, "adm1026", I2C_NAME_SIZE);
1828
1829 return 0;
1830 }
1831
1832 static int adm1026_probe(struct i2c_client *client,
1833 const struct i2c_device_id *id)
1834 {
1835 struct adm1026_data *data;
1836 int err;
1837
1838 data = devm_kzalloc(&client->dev, sizeof(struct adm1026_data),
1839 GFP_KERNEL);
1840 if (!data)
1841 return -ENOMEM;
1842
1843 i2c_set_clientdata(client, data);
1844 mutex_init(&data->update_lock);
1845
1846 /* Set the VRM version */
1847 data->vrm = vid_which_vrm();
1848
1849 /* Initialize the ADM1026 chip */
1850 adm1026_init_client(client);
1851
1852 /* Register sysfs hooks */
1853 err = sysfs_create_group(&client->dev.kobj, &adm1026_group);
1854 if (err)
1855 return err;
1856 if (data->config1 & CFG1_AIN8_9)
1857 err = sysfs_create_group(&client->dev.kobj,
1858 &adm1026_group_in8_9);
1859 else
1860 err = sysfs_create_group(&client->dev.kobj,
1861 &adm1026_group_temp3);
1862 if (err)
1863 goto exitremove;
1864
1865 data->hwmon_dev = hwmon_device_register(&client->dev);
1866 if (IS_ERR(data->hwmon_dev)) {
1867 err = PTR_ERR(data->hwmon_dev);
1868 goto exitremove;
1869 }
1870
1871 return 0;
1872
1873 /* Error out and cleanup code */
1874 exitremove:
1875 sysfs_remove_group(&client->dev.kobj, &adm1026_group);
1876 if (data->config1 & CFG1_AIN8_9)
1877 sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
1878 else
1879 sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
1880 return err;
1881 }
1882
1883 static int adm1026_remove(struct i2c_client *client)
1884 {
1885 struct adm1026_data *data = i2c_get_clientdata(client);
1886 hwmon_device_unregister(data->hwmon_dev);
1887 sysfs_remove_group(&client->dev.kobj, &adm1026_group);
1888 if (data->config1 & CFG1_AIN8_9)
1889 sysfs_remove_group(&client->dev.kobj, &adm1026_group_in8_9);
1890 else
1891 sysfs_remove_group(&client->dev.kobj, &adm1026_group_temp3);
1892 return 0;
1893 }
1894
1895 module_i2c_driver(adm1026_driver);
1896
1897 MODULE_LICENSE("GPL");
1898 MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1899 "Justin Thiessen <jthiessen@penguincomputing.com>");
1900 MODULE_DESCRIPTION("ADM1026 driver");
Linus' kernel tree