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Linux/drivers/hwmon/pc87360.c

  1 /*
  2  *  pc87360.c - Part of lm_sensors, Linux kernel modules
  3  *              for hardware monitoring
  4  *  Copyright (C) 2004, 2007 Jean Delvare <jdelvare@suse.de>
  5  *
  6  *  Copied from smsc47m1.c:
  7  *  Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
  8  *
  9  *  This program is free software; you can redistribute it and/or modify
 10  *  it under the terms of the GNU General Public License as published by
 11  *  the Free Software Foundation; either version 2 of the License, or
 12  *  (at your option) any later version.
 13  *
 14  *  This program is distributed in the hope that it will be useful,
 15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17  *  GNU General Public License for more details.
 18  *
 19  *  You should have received a copy of the GNU General Public License
 20  *  along with this program; if not, write to the Free Software
 21  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 22  *
 23  *  Supports the following chips:
 24  *
 25  *  Chip        #vin    #fan    #pwm    #temp   devid
 26  *  PC87360     -       2       2       -       0xE1
 27  *  PC87363     -       2       2       -       0xE8
 28  *  PC87364     -       3       3       -       0xE4
 29  *  PC87365     11      3       3       2       0xE5
 30  *  PC87366     11      3       3       3-4     0xE9
 31  *
 32  *  This driver assumes that no more than one chip is present, and one of
 33  *  the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
 34  */
 35 
 36 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 37 
 38 #include <linux/module.h>
 39 #include <linux/init.h>
 40 #include <linux/slab.h>
 41 #include <linux/jiffies.h>
 42 #include <linux/platform_device.h>
 43 #include <linux/hwmon.h>
 44 #include <linux/hwmon-sysfs.h>
 45 #include <linux/hwmon-vid.h>
 46 #include <linux/err.h>
 47 #include <linux/mutex.h>
 48 #include <linux/acpi.h>
 49 #include <linux/io.h>
 50 
 51 static u8 devid;
 52 static struct platform_device *pdev;
 53 static unsigned short extra_isa[3];
 54 static u8 confreg[4];
 55 
 56 static int init = 1;
 57 module_param(init, int, 0);
 58 MODULE_PARM_DESC(init,
 59 "Chip initialization level:\n"
 60 " 0: None\n"
 61 "*1: Forcibly enable internal voltage and temperature channels, except in9\n"
 62 " 2: Forcibly enable all voltage and temperature channels, except in9\n"
 63 " 3: Forcibly enable all voltage and temperature channels, including in9");
 64 
 65 static unsigned short force_id;
 66 module_param(force_id, ushort, 0);
 67 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 68 
 69 /*
 70  * Super-I/O registers and operations
 71  */
 72 
 73 #define DEV     0x07    /* Register: Logical device select */
 74 #define DEVID   0x20    /* Register: Device ID */
 75 #define ACT     0x30    /* Register: Device activation */
 76 #define BASE    0x60    /* Register: Base address */
 77 
 78 #define FSCM    0x09    /* Logical device: fans */
 79 #define VLM     0x0d    /* Logical device: voltages */
 80 #define TMS     0x0e    /* Logical device: temperatures */
 81 #define LDNI_MAX 3
 82 static const u8 logdev[LDNI_MAX] = { FSCM, VLM, TMS };
 83 
 84 #define LD_FAN          0
 85 #define LD_IN           1
 86 #define LD_TEMP         2
 87 
 88 static inline void superio_outb(int sioaddr, int reg, int val)
 89 {
 90         outb(reg, sioaddr);
 91         outb(val, sioaddr + 1);
 92 }
 93 
 94 static inline int superio_inb(int sioaddr, int reg)
 95 {
 96         outb(reg, sioaddr);
 97         return inb(sioaddr + 1);
 98 }
 99 
100 static inline void superio_exit(int sioaddr)
101 {
102         outb(0x02, sioaddr);
103         outb(0x02, sioaddr + 1);
104 }
105 
106 /*
107  * Logical devices
108  */
109 
110 #define PC87360_EXTENT          0x10
111 #define PC87365_REG_BANK        0x09
112 #define NO_BANK                 0xff
113 
114 /*
115  * Fan registers and conversions
116  */
117 
118 /* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
119 #define PC87360_REG_PRESCALE(nr)        (0x00 + 2 * (nr))
120 #define PC87360_REG_PWM(nr)             (0x01 + 2 * (nr))
121 #define PC87360_REG_FAN_MIN(nr)         (0x06 + 3 * (nr))
122 #define PC87360_REG_FAN(nr)             (0x07 + 3 * (nr))
123 #define PC87360_REG_FAN_STATUS(nr)      (0x08 + 3 * (nr))
124 
125 #define FAN_FROM_REG(val, div)          ((val) == 0 ? 0 : \
126                                          480000 / ((val) * (div)))
127 #define FAN_TO_REG(val, div)            ((val) <= 100 ? 0 : \
128                                          480000 / ((val) * (div)))
129 #define FAN_DIV_FROM_REG(val)           (1 << (((val) >> 5) & 0x03))
130 #define FAN_STATUS_FROM_REG(val)        ((val) & 0x07)
131 
132 #define FAN_CONFIG_MONITOR(val, nr)     (((val) >> (2 + (nr) * 3)) & 1)
133 #define FAN_CONFIG_CONTROL(val, nr)     (((val) >> (3 + (nr) * 3)) & 1)
134 #define FAN_CONFIG_INVERT(val, nr)      (((val) >> (4 + (nr) * 3)) & 1)
135 
136 #define PWM_FROM_REG(val, inv)          ((inv) ? 255 - (val) : (val))
137 static inline u8 PWM_TO_REG(int val, int inv)
138 {
139         if (inv)
140                 val = 255 - val;
141         if (val < 0)
142                 return 0;
143         if (val > 255)
144                 return 255;
145         return val;
146 }
147 
148 /*
149  * Voltage registers and conversions
150  */
151 
152 #define PC87365_REG_IN_CONVRATE         0x07
153 #define PC87365_REG_IN_CONFIG           0x08
154 #define PC87365_REG_IN                  0x0B
155 #define PC87365_REG_IN_MIN              0x0D
156 #define PC87365_REG_IN_MAX              0x0C
157 #define PC87365_REG_IN_STATUS           0x0A
158 #define PC87365_REG_IN_ALARMS1          0x00
159 #define PC87365_REG_IN_ALARMS2          0x01
160 #define PC87365_REG_VID                 0x06
161 
162 #define IN_FROM_REG(val, ref)           (((val) * (ref) + 128) / 256)
163 #define IN_TO_REG(val, ref)             ((val) < 0 ? 0 : \
164                                          (val) * 256 >= (ref) * 255 ? 255 : \
165                                          ((val) * 256 + (ref) / 2) / (ref))
166 
167 /*
168  * Temperature registers and conversions
169  */
170 
171 #define PC87365_REG_TEMP_CONFIG         0x08
172 #define PC87365_REG_TEMP                0x0B
173 #define PC87365_REG_TEMP_MIN            0x0D
174 #define PC87365_REG_TEMP_MAX            0x0C
175 #define PC87365_REG_TEMP_CRIT           0x0E
176 #define PC87365_REG_TEMP_STATUS         0x0A
177 #define PC87365_REG_TEMP_ALARMS         0x00
178 
179 #define TEMP_FROM_REG(val)              ((val) * 1000)
180 #define TEMP_TO_REG(val)                ((val) < -55000 ? -55 : \
181                                          (val) > 127000 ? 127 : \
182                                          (val) < 0 ? ((val) - 500) / 1000 : \
183                                          ((val) + 500) / 1000)
184 
185 /*
186  * Device data
187  */
188 
189 struct pc87360_data {
190         const char *name;
191         struct device *hwmon_dev;
192         struct mutex lock;
193         struct mutex update_lock;
194         char valid;             /* !=0 if following fields are valid */
195         unsigned long last_updated;     /* In jiffies */
196 
197         int address[3];
198 
199         u8 fannr, innr, tempnr;
200 
201         u8 fan[3];              /* Register value */
202         u8 fan_min[3];          /* Register value */
203         u8 fan_status[3];       /* Register value */
204         u8 pwm[3];              /* Register value */
205         u16 fan_conf;           /* Configuration register values, combined */
206 
207         u16 in_vref;            /* 1 mV/bit */
208         u8 in[14];              /* Register value */
209         u8 in_min[14];          /* Register value */
210         u8 in_max[14];          /* Register value */
211         u8 in_crit[3];          /* Register value */
212         u8 in_status[14];       /* Register value */
213         u16 in_alarms;          /* Register values, combined, masked */
214         u8 vid_conf;            /* Configuration register value */
215         u8 vrm;
216         u8 vid;                 /* Register value */
217 
218         s8 temp[3];             /* Register value */
219         s8 temp_min[3];         /* Register value */
220         s8 temp_max[3];         /* Register value */
221         s8 temp_crit[3];        /* Register value */
222         u8 temp_status[3];      /* Register value */
223         u8 temp_alarms;         /* Register value, masked */
224 };
225 
226 /*
227  * Functions declaration
228  */
229 
230 static int pc87360_probe(struct platform_device *pdev);
231 static int pc87360_remove(struct platform_device *pdev);
232 
233 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
234                               u8 reg);
235 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
236                                 u8 reg, u8 value);
237 static void pc87360_init_device(struct platform_device *pdev,
238                                 int use_thermistors);
239 static struct pc87360_data *pc87360_update_device(struct device *dev);
240 
241 /*
242  * Driver data
243  */
244 
245 static struct platform_driver pc87360_driver = {
246         .driver = {
247                 .owner  = THIS_MODULE,
248                 .name   = "pc87360",
249         },
250         .probe          = pc87360_probe,
251         .remove         = pc87360_remove,
252 };
253 
254 /*
255  * Sysfs stuff
256  */
257 
258 static ssize_t show_fan_input(struct device *dev,
259                               struct device_attribute *devattr, char *buf)
260 {
261         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
262         struct pc87360_data *data = pc87360_update_device(dev);
263         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
264                        FAN_DIV_FROM_REG(data->fan_status[attr->index])));
265 }
266 static ssize_t show_fan_min(struct device *dev,
267                             struct device_attribute *devattr, char *buf)
268 {
269         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
270         struct pc87360_data *data = pc87360_update_device(dev);
271         return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
272                        FAN_DIV_FROM_REG(data->fan_status[attr->index])));
273 }
274 static ssize_t show_fan_div(struct device *dev,
275                             struct device_attribute *devattr, char *buf)
276 {
277         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
278         struct pc87360_data *data = pc87360_update_device(dev);
279         return sprintf(buf, "%u\n",
280                        FAN_DIV_FROM_REG(data->fan_status[attr->index]));
281 }
282 static ssize_t show_fan_status(struct device *dev,
283                                struct device_attribute *devattr, char *buf)
284 {
285         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
286         struct pc87360_data *data = pc87360_update_device(dev);
287         return sprintf(buf, "%u\n",
288                        FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
289 }
290 static ssize_t set_fan_min(struct device *dev,
291                            struct device_attribute *devattr, const char *buf,
292         size_t count)
293 {
294         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
295         struct pc87360_data *data = dev_get_drvdata(dev);
296         long fan_min;
297         int err;
298 
299         err = kstrtol(buf, 10, &fan_min);
300         if (err)
301                 return err;
302 
303         mutex_lock(&data->update_lock);
304         fan_min = FAN_TO_REG(fan_min,
305                              FAN_DIV_FROM_REG(data->fan_status[attr->index]));
306 
307         /* If it wouldn't fit, change clock divisor */
308         while (fan_min > 255
309             && (data->fan_status[attr->index] & 0x60) != 0x60) {
310                 fan_min >>= 1;
311                 data->fan[attr->index] >>= 1;
312                 data->fan_status[attr->index] += 0x20;
313         }
314         data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
315         pc87360_write_value(data, LD_FAN, NO_BANK,
316                             PC87360_REG_FAN_MIN(attr->index),
317                             data->fan_min[attr->index]);
318 
319         /* Write new divider, preserve alarm bits */
320         pc87360_write_value(data, LD_FAN, NO_BANK,
321                             PC87360_REG_FAN_STATUS(attr->index),
322                             data->fan_status[attr->index] & 0xF9);
323         mutex_unlock(&data->update_lock);
324 
325         return count;
326 }
327 
328 static struct sensor_device_attribute fan_input[] = {
329         SENSOR_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0),
330         SENSOR_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1),
331         SENSOR_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2),
332 };
333 static struct sensor_device_attribute fan_status[] = {
334         SENSOR_ATTR(fan1_status, S_IRUGO, show_fan_status, NULL, 0),
335         SENSOR_ATTR(fan2_status, S_IRUGO, show_fan_status, NULL, 1),
336         SENSOR_ATTR(fan3_status, S_IRUGO, show_fan_status, NULL, 2),
337 };
338 static struct sensor_device_attribute fan_div[] = {
339         SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
340         SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
341         SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
342 };
343 static struct sensor_device_attribute fan_min[] = {
344         SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 0),
345         SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 1),
346         SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, set_fan_min, 2),
347 };
348 
349 #define FAN_UNIT_ATTRS(X)               \
350 {       &fan_input[X].dev_attr.attr,    \
351         &fan_status[X].dev_attr.attr,   \
352         &fan_div[X].dev_attr.attr,      \
353         &fan_min[X].dev_attr.attr,      \
354         NULL                            \
355 }
356 
357 static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
358                         char *buf)
359 {
360         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
361         struct pc87360_data *data = pc87360_update_device(dev);
362         return sprintf(buf, "%u\n",
363                        PWM_FROM_REG(data->pwm[attr->index],
364                                     FAN_CONFIG_INVERT(data->fan_conf,
365                                                       attr->index)));
366 }
367 static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
368                        const char *buf, size_t count)
369 {
370         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
371         struct pc87360_data *data = dev_get_drvdata(dev);
372         long val;
373         int err;
374 
375         err = kstrtol(buf, 10, &val);
376         if (err)
377                 return err;
378 
379         mutex_lock(&data->update_lock);
380         data->pwm[attr->index] = PWM_TO_REG(val,
381                               FAN_CONFIG_INVERT(data->fan_conf, attr->index));
382         pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
383                             data->pwm[attr->index]);
384         mutex_unlock(&data->update_lock);
385         return count;
386 }
387 
388 static struct sensor_device_attribute pwm[] = {
389         SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0),
390         SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1),
391         SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2),
392 };
393 
394 static struct attribute *pc8736x_fan_attr[][5] = {
395         FAN_UNIT_ATTRS(0),
396         FAN_UNIT_ATTRS(1),
397         FAN_UNIT_ATTRS(2)
398 };
399 
400 static const struct attribute_group pc8736x_fan_attr_group[] = {
401         { .attrs = pc8736x_fan_attr[0], },
402         { .attrs = pc8736x_fan_attr[1], },
403         { .attrs = pc8736x_fan_attr[2], },
404 };
405 
406 static ssize_t show_in_input(struct device *dev,
407                              struct device_attribute *devattr, char *buf)
408 {
409         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
410         struct pc87360_data *data = pc87360_update_device(dev);
411         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
412                        data->in_vref));
413 }
414 static ssize_t show_in_min(struct device *dev,
415                            struct device_attribute *devattr, char *buf)
416 {
417         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
418         struct pc87360_data *data = pc87360_update_device(dev);
419         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
420                        data->in_vref));
421 }
422 static ssize_t show_in_max(struct device *dev,
423                            struct device_attribute *devattr, char *buf)
424 {
425         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
426         struct pc87360_data *data = pc87360_update_device(dev);
427         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
428                        data->in_vref));
429 }
430 static ssize_t show_in_status(struct device *dev,
431                               struct device_attribute *devattr, char *buf)
432 {
433         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
434         struct pc87360_data *data = pc87360_update_device(dev);
435         return sprintf(buf, "%u\n", data->in_status[attr->index]);
436 }
437 static ssize_t set_in_min(struct device *dev, struct device_attribute *devattr,
438                           const char *buf, size_t count)
439 {
440         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
441         struct pc87360_data *data = dev_get_drvdata(dev);
442         long val;
443         int err;
444 
445         err = kstrtol(buf, 10, &val);
446         if (err)
447                 return err;
448 
449         mutex_lock(&data->update_lock);
450         data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
451         pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
452                             data->in_min[attr->index]);
453         mutex_unlock(&data->update_lock);
454         return count;
455 }
456 static ssize_t set_in_max(struct device *dev, struct device_attribute *devattr,
457                           const char *buf, size_t count)
458 {
459         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
460         struct pc87360_data *data = dev_get_drvdata(dev);
461         long val;
462         int err;
463 
464         err = kstrtol(buf, 10, &val);
465         if (err)
466                 return err;
467 
468         mutex_lock(&data->update_lock);
469         data->in_max[attr->index] = IN_TO_REG(val,
470                                data->in_vref);
471         pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
472                             data->in_max[attr->index]);
473         mutex_unlock(&data->update_lock);
474         return count;
475 }
476 
477 static struct sensor_device_attribute in_input[] = {
478         SENSOR_ATTR(in0_input, S_IRUGO, show_in_input, NULL, 0),
479         SENSOR_ATTR(in1_input, S_IRUGO, show_in_input, NULL, 1),
480         SENSOR_ATTR(in2_input, S_IRUGO, show_in_input, NULL, 2),
481         SENSOR_ATTR(in3_input, S_IRUGO, show_in_input, NULL, 3),
482         SENSOR_ATTR(in4_input, S_IRUGO, show_in_input, NULL, 4),
483         SENSOR_ATTR(in5_input, S_IRUGO, show_in_input, NULL, 5),
484         SENSOR_ATTR(in6_input, S_IRUGO, show_in_input, NULL, 6),
485         SENSOR_ATTR(in7_input, S_IRUGO, show_in_input, NULL, 7),
486         SENSOR_ATTR(in8_input, S_IRUGO, show_in_input, NULL, 8),
487         SENSOR_ATTR(in9_input, S_IRUGO, show_in_input, NULL, 9),
488         SENSOR_ATTR(in10_input, S_IRUGO, show_in_input, NULL, 10),
489 };
490 static struct sensor_device_attribute in_status[] = {
491         SENSOR_ATTR(in0_status, S_IRUGO, show_in_status, NULL, 0),
492         SENSOR_ATTR(in1_status, S_IRUGO, show_in_status, NULL, 1),
493         SENSOR_ATTR(in2_status, S_IRUGO, show_in_status, NULL, 2),
494         SENSOR_ATTR(in3_status, S_IRUGO, show_in_status, NULL, 3),
495         SENSOR_ATTR(in4_status, S_IRUGO, show_in_status, NULL, 4),
496         SENSOR_ATTR(in5_status, S_IRUGO, show_in_status, NULL, 5),
497         SENSOR_ATTR(in6_status, S_IRUGO, show_in_status, NULL, 6),
498         SENSOR_ATTR(in7_status, S_IRUGO, show_in_status, NULL, 7),
499         SENSOR_ATTR(in8_status, S_IRUGO, show_in_status, NULL, 8),
500         SENSOR_ATTR(in9_status, S_IRUGO, show_in_status, NULL, 9),
501         SENSOR_ATTR(in10_status, S_IRUGO, show_in_status, NULL, 10),
502 };
503 static struct sensor_device_attribute in_min[] = {
504         SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 0),
505         SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 1),
506         SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 2),
507         SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 3),
508         SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 4),
509         SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 5),
510         SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 6),
511         SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 7),
512         SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 8),
513         SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 9),
514         SENSOR_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, set_in_min, 10),
515 };
516 static struct sensor_device_attribute in_max[] = {
517         SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 0),
518         SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 1),
519         SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 2),
520         SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 3),
521         SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 4),
522         SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 5),
523         SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 6),
524         SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 7),
525         SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 8),
526         SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 9),
527         SENSOR_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, set_in_max, 10),
528 };
529 
530 /* (temp & vin) channel status register alarm bits (pdf sec.11.5.12) */
531 #define CHAN_ALM_MIN    0x02    /* min limit crossed */
532 #define CHAN_ALM_MAX    0x04    /* max limit exceeded */
533 #define TEMP_ALM_CRIT   0x08    /* temp crit exceeded (temp only) */
534 
535 /*
536  * show_in_min/max_alarm() reads data from the per-channel status
537  * register (sec 11.5.12), not the vin event status registers (sec
538  * 11.5.2) that (legacy) show_in_alarm() resds (via data->in_alarms)
539  */
540 
541 static ssize_t show_in_min_alarm(struct device *dev,
542                         struct device_attribute *devattr, char *buf)
543 {
544         struct pc87360_data *data = pc87360_update_device(dev);
545         unsigned nr = to_sensor_dev_attr(devattr)->index;
546 
547         return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
548 }
549 static ssize_t show_in_max_alarm(struct device *dev,
550                         struct device_attribute *devattr, char *buf)
551 {
552         struct pc87360_data *data = pc87360_update_device(dev);
553         unsigned nr = to_sensor_dev_attr(devattr)->index;
554 
555         return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
556 }
557 
558 static struct sensor_device_attribute in_min_alarm[] = {
559         SENSOR_ATTR(in0_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 0),
560         SENSOR_ATTR(in1_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 1),
561         SENSOR_ATTR(in2_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 2),
562         SENSOR_ATTR(in3_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 3),
563         SENSOR_ATTR(in4_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 4),
564         SENSOR_ATTR(in5_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 5),
565         SENSOR_ATTR(in6_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 6),
566         SENSOR_ATTR(in7_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 7),
567         SENSOR_ATTR(in8_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 8),
568         SENSOR_ATTR(in9_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 9),
569         SENSOR_ATTR(in10_min_alarm, S_IRUGO, show_in_min_alarm, NULL, 10),
570 };
571 static struct sensor_device_attribute in_max_alarm[] = {
572         SENSOR_ATTR(in0_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 0),
573         SENSOR_ATTR(in1_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 1),
574         SENSOR_ATTR(in2_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 2),
575         SENSOR_ATTR(in3_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 3),
576         SENSOR_ATTR(in4_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 4),
577         SENSOR_ATTR(in5_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 5),
578         SENSOR_ATTR(in6_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 6),
579         SENSOR_ATTR(in7_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 7),
580         SENSOR_ATTR(in8_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 8),
581         SENSOR_ATTR(in9_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 9),
582         SENSOR_ATTR(in10_max_alarm, S_IRUGO, show_in_max_alarm, NULL, 10),
583 };
584 
585 #define VIN_UNIT_ATTRS(X) \
586         &in_input[X].dev_attr.attr,     \
587         &in_status[X].dev_attr.attr,    \
588         &in_min[X].dev_attr.attr,       \
589         &in_max[X].dev_attr.attr,       \
590         &in_min_alarm[X].dev_attr.attr, \
591         &in_max_alarm[X].dev_attr.attr
592 
593 static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
594                         char *buf)
595 {
596         struct pc87360_data *data = pc87360_update_device(dev);
597         return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
598 }
599 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
600 
601 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
602                         char *buf)
603 {
604         struct pc87360_data *data = dev_get_drvdata(dev);
605         return sprintf(buf, "%u\n", data->vrm);
606 }
607 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
608                        const char *buf, size_t count)
609 {
610         struct pc87360_data *data = dev_get_drvdata(dev);
611         unsigned long val;
612         int err;
613 
614         err = kstrtoul(buf, 10, &val);
615         if (err)
616                 return err;
617 
618         data->vrm = val;
619         return count;
620 }
621 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
622 
623 static ssize_t show_in_alarms(struct device *dev,
624                               struct device_attribute *attr, char *buf)
625 {
626         struct pc87360_data *data = pc87360_update_device(dev);
627         return sprintf(buf, "%u\n", data->in_alarms);
628 }
629 static DEVICE_ATTR(alarms_in, S_IRUGO, show_in_alarms, NULL);
630 
631 static struct attribute *pc8736x_vin_attr_array[] = {
632         VIN_UNIT_ATTRS(0),
633         VIN_UNIT_ATTRS(1),
634         VIN_UNIT_ATTRS(2),
635         VIN_UNIT_ATTRS(3),
636         VIN_UNIT_ATTRS(4),
637         VIN_UNIT_ATTRS(5),
638         VIN_UNIT_ATTRS(6),
639         VIN_UNIT_ATTRS(7),
640         VIN_UNIT_ATTRS(8),
641         VIN_UNIT_ATTRS(9),
642         VIN_UNIT_ATTRS(10),
643         &dev_attr_cpu0_vid.attr,
644         &dev_attr_vrm.attr,
645         &dev_attr_alarms_in.attr,
646         NULL
647 };
648 static const struct attribute_group pc8736x_vin_group = {
649         .attrs = pc8736x_vin_attr_array,
650 };
651 
652 static ssize_t show_therm_input(struct device *dev,
653                                 struct device_attribute *devattr, char *buf)
654 {
655         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
656         struct pc87360_data *data = pc87360_update_device(dev);
657         return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
658                        data->in_vref));
659 }
660 static ssize_t show_therm_min(struct device *dev,
661                               struct device_attribute *devattr, char *buf)
662 {
663         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
664         struct pc87360_data *data = pc87360_update_device(dev);
665         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
666                        data->in_vref));
667 }
668 static ssize_t show_therm_max(struct device *dev,
669                               struct device_attribute *devattr, char *buf)
670 {
671         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
672         struct pc87360_data *data = pc87360_update_device(dev);
673         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
674                        data->in_vref));
675 }
676 static ssize_t show_therm_crit(struct device *dev,
677                                struct device_attribute *devattr, char *buf)
678 {
679         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
680         struct pc87360_data *data = pc87360_update_device(dev);
681         return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
682                        data->in_vref));
683 }
684 static ssize_t show_therm_status(struct device *dev,
685                                  struct device_attribute *devattr, char *buf)
686 {
687         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
688         struct pc87360_data *data = pc87360_update_device(dev);
689         return sprintf(buf, "%u\n", data->in_status[attr->index]);
690 }
691 
692 static ssize_t set_therm_min(struct device *dev,
693                              struct device_attribute *devattr,
694                              const char *buf, size_t count)
695 {
696         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
697         struct pc87360_data *data = dev_get_drvdata(dev);
698         long val;
699         int err;
700 
701         err = kstrtol(buf, 10, &val);
702         if (err)
703                 return err;
704 
705         mutex_lock(&data->update_lock);
706         data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
707         pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
708                             data->in_min[attr->index]);
709         mutex_unlock(&data->update_lock);
710         return count;
711 }
712 
713 static ssize_t set_therm_max(struct device *dev,
714                              struct device_attribute *devattr,
715                              const char *buf, size_t count)
716 {
717         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
718         struct pc87360_data *data = dev_get_drvdata(dev);
719         long val;
720         int err;
721 
722         err = kstrtol(buf, 10, &val);
723         if (err)
724                 return err;
725 
726         mutex_lock(&data->update_lock);
727         data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
728         pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
729                             data->in_max[attr->index]);
730         mutex_unlock(&data->update_lock);
731         return count;
732 }
733 static ssize_t set_therm_crit(struct device *dev,
734                               struct device_attribute *devattr,
735                               const char *buf, size_t count)
736 {
737         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
738         struct pc87360_data *data = dev_get_drvdata(dev);
739         long val;
740         int err;
741 
742         err = kstrtol(buf, 10, &val);
743         if (err)
744                 return err;
745 
746         mutex_lock(&data->update_lock);
747         data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
748         pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
749                             data->in_crit[attr->index-11]);
750         mutex_unlock(&data->update_lock);
751         return count;
752 }
753 
754 /*
755  * the +11 term below reflects the fact that VLM units 11,12,13 are
756  * used in the chip to measure voltage across the thermistors
757  */
758 static struct sensor_device_attribute therm_input[] = {
759         SENSOR_ATTR(temp4_input, S_IRUGO, show_therm_input, NULL, 0 + 11),
760         SENSOR_ATTR(temp5_input, S_IRUGO, show_therm_input, NULL, 1 + 11),
761         SENSOR_ATTR(temp6_input, S_IRUGO, show_therm_input, NULL, 2 + 11),
762 };
763 static struct sensor_device_attribute therm_status[] = {
764         SENSOR_ATTR(temp4_status, S_IRUGO, show_therm_status, NULL, 0 + 11),
765         SENSOR_ATTR(temp5_status, S_IRUGO, show_therm_status, NULL, 1 + 11),
766         SENSOR_ATTR(temp6_status, S_IRUGO, show_therm_status, NULL, 2 + 11),
767 };
768 static struct sensor_device_attribute therm_min[] = {
769         SENSOR_ATTR(temp4_min, S_IRUGO | S_IWUSR,
770                     show_therm_min, set_therm_min, 0 + 11),
771         SENSOR_ATTR(temp5_min, S_IRUGO | S_IWUSR,
772                     show_therm_min, set_therm_min, 1 + 11),
773         SENSOR_ATTR(temp6_min, S_IRUGO | S_IWUSR,
774                     show_therm_min, set_therm_min, 2 + 11),
775 };
776 static struct sensor_device_attribute therm_max[] = {
777         SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR,
778                     show_therm_max, set_therm_max, 0 + 11),
779         SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR,
780                     show_therm_max, set_therm_max, 1 + 11),
781         SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR,
782                     show_therm_max, set_therm_max, 2 + 11),
783 };
784 static struct sensor_device_attribute therm_crit[] = {
785         SENSOR_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
786                     show_therm_crit, set_therm_crit, 0 + 11),
787         SENSOR_ATTR(temp5_crit, S_IRUGO | S_IWUSR,
788                     show_therm_crit, set_therm_crit, 1 + 11),
789         SENSOR_ATTR(temp6_crit, S_IRUGO | S_IWUSR,
790                     show_therm_crit, set_therm_crit, 2 + 11),
791 };
792 
793 /*
794  * show_therm_min/max_alarm() reads data from the per-channel voltage
795  * status register (sec 11.5.12)
796  */
797 
798 static ssize_t show_therm_min_alarm(struct device *dev,
799                                 struct device_attribute *devattr, char *buf)
800 {
801         struct pc87360_data *data = pc87360_update_device(dev);
802         unsigned nr = to_sensor_dev_attr(devattr)->index;
803 
804         return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
805 }
806 static ssize_t show_therm_max_alarm(struct device *dev,
807                                 struct device_attribute *devattr, char *buf)
808 {
809         struct pc87360_data *data = pc87360_update_device(dev);
810         unsigned nr = to_sensor_dev_attr(devattr)->index;
811 
812         return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
813 }
814 static ssize_t show_therm_crit_alarm(struct device *dev,
815                                 struct device_attribute *devattr, char *buf)
816 {
817         struct pc87360_data *data = pc87360_update_device(dev);
818         unsigned nr = to_sensor_dev_attr(devattr)->index;
819 
820         return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
821 }
822 
823 static struct sensor_device_attribute therm_min_alarm[] = {
824         SENSOR_ATTR(temp4_min_alarm, S_IRUGO,
825                     show_therm_min_alarm, NULL, 0 + 11),
826         SENSOR_ATTR(temp5_min_alarm, S_IRUGO,
827                     show_therm_min_alarm, NULL, 1 + 11),
828         SENSOR_ATTR(temp6_min_alarm, S_IRUGO,
829                     show_therm_min_alarm, NULL, 2 + 11),
830 };
831 static struct sensor_device_attribute therm_max_alarm[] = {
832         SENSOR_ATTR(temp4_max_alarm, S_IRUGO,
833                     show_therm_max_alarm, NULL, 0 + 11),
834         SENSOR_ATTR(temp5_max_alarm, S_IRUGO,
835                     show_therm_max_alarm, NULL, 1 + 11),
836         SENSOR_ATTR(temp6_max_alarm, S_IRUGO,
837                     show_therm_max_alarm, NULL, 2 + 11),
838 };
839 static struct sensor_device_attribute therm_crit_alarm[] = {
840         SENSOR_ATTR(temp4_crit_alarm, S_IRUGO,
841                     show_therm_crit_alarm, NULL, 0 + 11),
842         SENSOR_ATTR(temp5_crit_alarm, S_IRUGO,
843                     show_therm_crit_alarm, NULL, 1 + 11),
844         SENSOR_ATTR(temp6_crit_alarm, S_IRUGO,
845                     show_therm_crit_alarm, NULL, 2 + 11),
846 };
847 
848 #define THERM_UNIT_ATTRS(X) \
849         &therm_input[X].dev_attr.attr,  \
850         &therm_status[X].dev_attr.attr, \
851         &therm_min[X].dev_attr.attr,    \
852         &therm_max[X].dev_attr.attr,    \
853         &therm_crit[X].dev_attr.attr,   \
854         &therm_min_alarm[X].dev_attr.attr, \
855         &therm_max_alarm[X].dev_attr.attr, \
856         &therm_crit_alarm[X].dev_attr.attr
857 
858 static struct attribute *pc8736x_therm_attr_array[] = {
859         THERM_UNIT_ATTRS(0),
860         THERM_UNIT_ATTRS(1),
861         THERM_UNIT_ATTRS(2),
862         NULL
863 };
864 static const struct attribute_group pc8736x_therm_group = {
865         .attrs = pc8736x_therm_attr_array,
866 };
867 
868 static ssize_t show_temp_input(struct device *dev,
869                                struct device_attribute *devattr, char *buf)
870 {
871         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
872         struct pc87360_data *data = pc87360_update_device(dev);
873         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
874 }
875 
876 static ssize_t show_temp_min(struct device *dev,
877                              struct device_attribute *devattr, char *buf)
878 {
879         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
880         struct pc87360_data *data = pc87360_update_device(dev);
881         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
882 }
883 
884 static ssize_t show_temp_max(struct device *dev,
885                              struct device_attribute *devattr, char *buf)
886 {
887         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
888         struct pc87360_data *data = pc87360_update_device(dev);
889         return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
890 }
891 
892 static ssize_t show_temp_crit(struct device *dev,
893                               struct device_attribute *devattr, char *buf)
894 {
895         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
896         struct pc87360_data *data = pc87360_update_device(dev);
897         return sprintf(buf, "%d\n",
898                        TEMP_FROM_REG(data->temp_crit[attr->index]));
899 }
900 
901 static ssize_t show_temp_status(struct device *dev,
902                                 struct device_attribute *devattr, char *buf)
903 {
904         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
905         struct pc87360_data *data = pc87360_update_device(dev);
906         return sprintf(buf, "%d\n", data->temp_status[attr->index]);
907 }
908 
909 static ssize_t set_temp_min(struct device *dev,
910                             struct device_attribute *devattr,
911                             const char *buf, size_t count)
912 {
913         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
914         struct pc87360_data *data = dev_get_drvdata(dev);
915         long val;
916         int err;
917 
918         err = kstrtol(buf, 10, &val);
919         if (err)
920                 return err;
921 
922         mutex_lock(&data->update_lock);
923         data->temp_min[attr->index] = TEMP_TO_REG(val);
924         pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
925                             data->temp_min[attr->index]);
926         mutex_unlock(&data->update_lock);
927         return count;
928 }
929 
930 static ssize_t set_temp_max(struct device *dev,
931                             struct device_attribute *devattr,
932                             const char *buf, size_t count)
933 {
934         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
935         struct pc87360_data *data = dev_get_drvdata(dev);
936         long val;
937         int err;
938 
939         err = kstrtol(buf, 10, &val);
940         if (err)
941                 return err;
942 
943         mutex_lock(&data->update_lock);
944         data->temp_max[attr->index] = TEMP_TO_REG(val);
945         pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
946                             data->temp_max[attr->index]);
947         mutex_unlock(&data->update_lock);
948         return count;
949 }
950 
951 static ssize_t set_temp_crit(struct device *dev,
952                              struct device_attribute *devattr, const char *buf,
953                              size_t count)
954 {
955         struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
956         struct pc87360_data *data = dev_get_drvdata(dev);
957         long val;
958         int err;
959 
960         err = kstrtol(buf, 10, &val);
961         if (err)
962                 return err;
963 
964         mutex_lock(&data->update_lock);
965         data->temp_crit[attr->index] = TEMP_TO_REG(val);
966         pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
967                             data->temp_crit[attr->index]);
968         mutex_unlock(&data->update_lock);
969         return count;
970 }
971 
972 static struct sensor_device_attribute temp_input[] = {
973         SENSOR_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0),
974         SENSOR_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1),
975         SENSOR_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2),
976 };
977 static struct sensor_device_attribute temp_status[] = {
978         SENSOR_ATTR(temp1_status, S_IRUGO, show_temp_status, NULL, 0),
979         SENSOR_ATTR(temp2_status, S_IRUGO, show_temp_status, NULL, 1),
980         SENSOR_ATTR(temp3_status, S_IRUGO, show_temp_status, NULL, 2),
981 };
982 static struct sensor_device_attribute temp_min[] = {
983         SENSOR_ATTR(temp1_min, S_IRUGO | S_IWUSR,
984                     show_temp_min, set_temp_min, 0),
985         SENSOR_ATTR(temp2_min, S_IRUGO | S_IWUSR,
986                     show_temp_min, set_temp_min, 1),
987         SENSOR_ATTR(temp3_min, S_IRUGO | S_IWUSR,
988                     show_temp_min, set_temp_min, 2),
989 };
990 static struct sensor_device_attribute temp_max[] = {
991         SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR,
992                     show_temp_max, set_temp_max, 0),
993         SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR,
994                     show_temp_max, set_temp_max, 1),
995         SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR,
996                     show_temp_max, set_temp_max, 2),
997 };
998 static struct sensor_device_attribute temp_crit[] = {
999         SENSOR_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
1000                     show_temp_crit, set_temp_crit, 0),
1001         SENSOR_ATTR(temp2_crit, S_IRUGO | S_IWUSR,
1002                     show_temp_crit, set_temp_crit, 1),
1003         SENSOR_ATTR(temp3_crit, S_IRUGO | S_IWUSR,
1004                     show_temp_crit, set_temp_crit, 2),
1005 };
1006 
1007 static ssize_t show_temp_alarms(struct device *dev,
1008                                 struct device_attribute *attr, char *buf)
1009 {
1010         struct pc87360_data *data = pc87360_update_device(dev);
1011         return sprintf(buf, "%u\n", data->temp_alarms);
1012 }
1013 
1014 static DEVICE_ATTR(alarms_temp, S_IRUGO, show_temp_alarms, NULL);
1015 
1016 /*
1017  * show_temp_min/max_alarm() reads data from the per-channel status
1018  * register (sec 12.3.7), not the temp event status registers (sec
1019  * 12.3.2) that show_temp_alarm() reads (via data->temp_alarms)
1020  */
1021 
1022 static ssize_t show_temp_min_alarm(struct device *dev,
1023                         struct device_attribute *devattr, char *buf)
1024 {
1025         struct pc87360_data *data = pc87360_update_device(dev);
1026         unsigned nr = to_sensor_dev_attr(devattr)->index;
1027 
1028         return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
1029 }
1030 
1031 static ssize_t show_temp_max_alarm(struct device *dev,
1032                         struct device_attribute *devattr, char *buf)
1033 {
1034         struct pc87360_data *data = pc87360_update_device(dev);
1035         unsigned nr = to_sensor_dev_attr(devattr)->index;
1036 
1037         return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
1038 }
1039 
1040 static ssize_t show_temp_crit_alarm(struct device *dev,
1041                         struct device_attribute *devattr, char *buf)
1042 {
1043         struct pc87360_data *data = pc87360_update_device(dev);
1044         unsigned nr = to_sensor_dev_attr(devattr)->index;
1045 
1046         return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
1047 }
1048 
1049 static struct sensor_device_attribute temp_min_alarm[] = {
1050         SENSOR_ATTR(temp1_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 0),
1051         SENSOR_ATTR(temp2_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 1),
1052         SENSOR_ATTR(temp3_min_alarm, S_IRUGO, show_temp_min_alarm, NULL, 2),
1053 };
1054 
1055 static struct sensor_device_attribute temp_max_alarm[] = {
1056         SENSOR_ATTR(temp1_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 0),
1057         SENSOR_ATTR(temp2_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 1),
1058         SENSOR_ATTR(temp3_max_alarm, S_IRUGO, show_temp_max_alarm, NULL, 2),
1059 };
1060 
1061 static struct sensor_device_attribute temp_crit_alarm[] = {
1062         SENSOR_ATTR(temp1_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 0),
1063         SENSOR_ATTR(temp2_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 1),
1064         SENSOR_ATTR(temp3_crit_alarm, S_IRUGO, show_temp_crit_alarm, NULL, 2),
1065 };
1066 
1067 #define TEMP_FAULT      0x40    /* open diode */
1068 static ssize_t show_temp_fault(struct device *dev,
1069                         struct device_attribute *devattr, char *buf)
1070 {
1071         struct pc87360_data *data = pc87360_update_device(dev);
1072         unsigned nr = to_sensor_dev_attr(devattr)->index;
1073 
1074         return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
1075 }
1076 static struct sensor_device_attribute temp_fault[] = {
1077         SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0),
1078         SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1),
1079         SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2),
1080 };
1081 
1082 #define TEMP_UNIT_ATTRS(X)                      \
1083 {       &temp_input[X].dev_attr.attr,           \
1084         &temp_status[X].dev_attr.attr,          \
1085         &temp_min[X].dev_attr.attr,             \
1086         &temp_max[X].dev_attr.attr,             \
1087         &temp_crit[X].dev_attr.attr,            \
1088         &temp_min_alarm[X].dev_attr.attr,       \
1089         &temp_max_alarm[X].dev_attr.attr,       \
1090         &temp_crit_alarm[X].dev_attr.attr,      \
1091         &temp_fault[X].dev_attr.attr,           \
1092         NULL                                    \
1093 }
1094 
1095 static struct attribute *pc8736x_temp_attr[][10] = {
1096         TEMP_UNIT_ATTRS(0),
1097         TEMP_UNIT_ATTRS(1),
1098         TEMP_UNIT_ATTRS(2)
1099 };
1100 
1101 static const struct attribute_group pc8736x_temp_attr_group[] = {
1102         { .attrs = pc8736x_temp_attr[0] },
1103         { .attrs = pc8736x_temp_attr[1] },
1104         { .attrs = pc8736x_temp_attr[2] }
1105 };
1106 
1107 static ssize_t show_name(struct device *dev,
1108                         struct device_attribute *devattr, char *buf)
1109 {
1110         struct pc87360_data *data = dev_get_drvdata(dev);
1111         return sprintf(buf, "%s\n", data->name);
1112 }
1113 
1114 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
1115 
1116 /*
1117  * Device detection, registration and update
1118  */
1119 
1120 static int __init pc87360_find(int sioaddr, u8 *devid,
1121                                unsigned short *addresses)
1122 {
1123         u16 val;
1124         int i;
1125         int nrdev; /* logical device count */
1126 
1127         /* No superio_enter */
1128 
1129         /* Identify device */
1130         val = force_id ? force_id : superio_inb(sioaddr, DEVID);
1131         switch (val) {
1132         case 0xE1: /* PC87360 */
1133         case 0xE8: /* PC87363 */
1134         case 0xE4: /* PC87364 */
1135                 nrdev = 1;
1136                 break;
1137         case 0xE5: /* PC87365 */
1138         case 0xE9: /* PC87366 */
1139                 nrdev = 3;
1140                 break;
1141         default:
1142                 superio_exit(sioaddr);
1143                 return -ENODEV;
1144         }
1145         /* Remember the device id */
1146         *devid = val;
1147 
1148         for (i = 0; i < nrdev; i++) {
1149                 /* select logical device */
1150                 superio_outb(sioaddr, DEV, logdev[i]);
1151 
1152                 val = superio_inb(sioaddr, ACT);
1153                 if (!(val & 0x01)) {
1154                         pr_info("Device 0x%02x not activated\n", logdev[i]);
1155                         continue;
1156                 }
1157 
1158                 val = (superio_inb(sioaddr, BASE) << 8)
1159                     | superio_inb(sioaddr, BASE + 1);
1160                 if (!val) {
1161                         pr_info("Base address not set for device 0x%02x\n",
1162                                 logdev[i]);
1163                         continue;
1164                 }
1165 
1166                 addresses[i] = val;
1167 
1168                 if (i == 0) { /* Fans */
1169                         confreg[0] = superio_inb(sioaddr, 0xF0);
1170                         confreg[1] = superio_inb(sioaddr, 0xF1);
1171 
1172                         pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
1173                                  (confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
1174                                  (confreg[0] >> 4) & 1);
1175                         pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
1176                                  (confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
1177                                  (confreg[0] >> 7) & 1);
1178                         pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
1179                                  confreg[1] & 1, (confreg[1] >> 1) & 1,
1180                                  (confreg[1] >> 2) & 1);
1181                 } else if (i == 1) { /* Voltages */
1182                         /* Are we using thermistors? */
1183                         if (*devid == 0xE9) { /* PC87366 */
1184                                 /*
1185                                  * These registers are not logical-device
1186                                  * specific, just that we won't need them if
1187                                  * we don't use the VLM device
1188                                  */
1189                                 confreg[2] = superio_inb(sioaddr, 0x2B);
1190                                 confreg[3] = superio_inb(sioaddr, 0x25);
1191 
1192                                 if (confreg[2] & 0x40) {
1193                                         pr_info("Using thermistors for temperature monitoring\n");
1194                                 }
1195                                 if (confreg[3] & 0xE0) {
1196                                         pr_info("VID inputs routed (mode %u)\n",
1197                                                 confreg[3] >> 5);
1198                                 }
1199                         }
1200                 }
1201         }
1202 
1203         superio_exit(sioaddr);
1204         return 0;
1205 }
1206 
1207 static void pc87360_remove_files(struct device *dev)
1208 {
1209         int i;
1210 
1211         device_remove_file(dev, &dev_attr_name);
1212         device_remove_file(dev, &dev_attr_alarms_temp);
1213         for (i = 0; i < ARRAY_SIZE(pc8736x_temp_attr_group); i++)
1214                 sysfs_remove_group(&dev->kobj, &pc8736x_temp_attr_group[i]);
1215         for (i = 0; i < ARRAY_SIZE(pc8736x_fan_attr_group); i++) {
1216                 sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_attr_group[i]);
1217                 device_remove_file(dev, &pwm[i].dev_attr);
1218         }
1219         sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
1220         sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
1221 }
1222 
1223 static int pc87360_probe(struct platform_device *pdev)
1224 {
1225         int i;
1226         struct pc87360_data *data;
1227         int err = 0;
1228         const char *name;
1229         int use_thermistors = 0;
1230         struct device *dev = &pdev->dev;
1231 
1232         data = devm_kzalloc(dev, sizeof(struct pc87360_data), GFP_KERNEL);
1233         if (!data)
1234                 return -ENOMEM;
1235 
1236         switch (devid) {
1237         default:
1238                 name = "pc87360";
1239                 data->fannr = 2;
1240                 break;
1241         case 0xe8:
1242                 name = "pc87363";
1243                 data->fannr = 2;
1244                 break;
1245         case 0xe4:
1246                 name = "pc87364";
1247                 data->fannr = 3;
1248                 break;
1249         case 0xe5:
1250                 name = "pc87365";
1251                 data->fannr = extra_isa[0] ? 3 : 0;
1252                 data->innr = extra_isa[1] ? 11 : 0;
1253                 data->tempnr = extra_isa[2] ? 2 : 0;
1254                 break;
1255         case 0xe9:
1256                 name = "pc87366";
1257                 data->fannr = extra_isa[0] ? 3 : 0;
1258                 data->innr = extra_isa[1] ? 14 : 0;
1259                 data->tempnr = extra_isa[2] ? 3 : 0;
1260                 break;
1261         }
1262 
1263         data->name = name;
1264         mutex_init(&data->lock);
1265         mutex_init(&data->update_lock);
1266         platform_set_drvdata(pdev, data);
1267 
1268         for (i = 0; i < LDNI_MAX; i++) {
1269                 data->address[i] = extra_isa[i];
1270                 if (data->address[i]
1271                  && !devm_request_region(dev, extra_isa[i], PC87360_EXTENT,
1272                                          pc87360_driver.driver.name)) {
1273                         dev_err(dev,
1274                                 "Region 0x%x-0x%x already in use!\n",
1275                                 extra_isa[i], extra_isa[i]+PC87360_EXTENT-1);
1276                         return -EBUSY;
1277                 }
1278         }
1279 
1280         /* Retrieve the fans configuration from Super-I/O space */
1281         if (data->fannr)
1282                 data->fan_conf = confreg[0] | (confreg[1] << 8);
1283 
1284         /*
1285          * Use the correct reference voltage
1286          * Unless both the VLM and the TMS logical devices agree to
1287          * use an external Vref, the internal one is used.
1288          */
1289         if (data->innr) {
1290                 i = pc87360_read_value(data, LD_IN, NO_BANK,
1291                                        PC87365_REG_IN_CONFIG);
1292                 if (data->tempnr) {
1293                         i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
1294                                                 PC87365_REG_TEMP_CONFIG);
1295                 }
1296                 data->in_vref = (i&0x02) ? 3025 : 2966;
1297                 dev_dbg(dev, "Using %s reference voltage\n",
1298                         (i&0x02) ? "external" : "internal");
1299 
1300                 data->vid_conf = confreg[3];
1301                 data->vrm = vid_which_vrm();
1302         }
1303 
1304         /* Fan clock dividers may be needed before any data is read */
1305         for (i = 0; i < data->fannr; i++) {
1306                 if (FAN_CONFIG_MONITOR(data->fan_conf, i))
1307                         data->fan_status[i] = pc87360_read_value(data,
1308                                               LD_FAN, NO_BANK,
1309                                               PC87360_REG_FAN_STATUS(i));
1310         }
1311 
1312         if (init > 0) {
1313                 if (devid == 0xe9 && data->address[1]) /* PC87366 */
1314                         use_thermistors = confreg[2] & 0x40;
1315 
1316                 pc87360_init_device(pdev, use_thermistors);
1317         }
1318 
1319         /* Register all-or-nothing sysfs groups */
1320 
1321         if (data->innr) {
1322                 err = sysfs_create_group(&dev->kobj, &pc8736x_vin_group);
1323                 if (err)
1324                         goto error;
1325         }
1326 
1327         if (data->innr == 14) {
1328                 err = sysfs_create_group(&dev->kobj, &pc8736x_therm_group);
1329                 if (err)
1330                         goto error;
1331         }
1332 
1333         /* create device attr-files for varying sysfs groups */
1334 
1335         if (data->tempnr) {
1336                 for (i = 0; i < data->tempnr; i++) {
1337                         err = sysfs_create_group(&dev->kobj,
1338                                                  &pc8736x_temp_attr_group[i]);
1339                         if (err)
1340                                 goto error;
1341                 }
1342                 err = device_create_file(dev, &dev_attr_alarms_temp);
1343                 if (err)
1344                         goto error;
1345         }
1346 
1347         for (i = 0; i < data->fannr; i++) {
1348                 if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1349                         err = sysfs_create_group(&dev->kobj,
1350                                                  &pc8736x_fan_attr_group[i]);
1351                         if (err)
1352                                 goto error;
1353                 }
1354                 if (FAN_CONFIG_CONTROL(data->fan_conf, i)) {
1355                         err = device_create_file(dev, &pwm[i].dev_attr);
1356                         if (err)
1357                                 goto error;
1358                 }
1359         }
1360 
1361         err = device_create_file(dev, &dev_attr_name);
1362         if (err)
1363                 goto error;
1364 
1365         data->hwmon_dev = hwmon_device_register(dev);
1366         if (IS_ERR(data->hwmon_dev)) {
1367                 err = PTR_ERR(data->hwmon_dev);
1368                 goto error;
1369         }
1370         return 0;
1371 
1372 error:
1373         pc87360_remove_files(dev);
1374         return err;
1375 }
1376 
1377 static int pc87360_remove(struct platform_device *pdev)
1378 {
1379         struct pc87360_data *data = platform_get_drvdata(pdev);
1380 
1381         hwmon_device_unregister(data->hwmon_dev);
1382         pc87360_remove_files(&pdev->dev);
1383 
1384         return 0;
1385 }
1386 
1387 /*
1388  * ldi is the logical device index
1389  * bank is for voltages and temperatures only
1390  */
1391 static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
1392                               u8 reg)
1393 {
1394         int res;
1395 
1396         mutex_lock(&(data->lock));
1397         if (bank != NO_BANK)
1398                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1399         res = inb_p(data->address[ldi] + reg);
1400         mutex_unlock(&(data->lock));
1401 
1402         return res;
1403 }
1404 
1405 static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
1406                                 u8 reg, u8 value)
1407 {
1408         mutex_lock(&(data->lock));
1409         if (bank != NO_BANK)
1410                 outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
1411         outb_p(value, data->address[ldi] + reg);
1412         mutex_unlock(&(data->lock));
1413 }
1414 
1415 /* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
1416 #define CHAN_CNVRTD     0x80    /* new data ready */
1417 #define CHAN_ENA        0x01    /* enabled channel (temp or vin) */
1418 #define CHAN_ALM_ENA    0x10    /* propagate to alarms-reg ?? (chk val!) */
1419 #define CHAN_READY      (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
1420 
1421 #define TEMP_OTS_OE     0x20    /* OTS Output Enable */
1422 #define VIN_RW1C_MASK   (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN)   /* 0x87 */
1423 #define TEMP_RW1C_MASK  (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
1424 
1425 static void pc87360_init_device(struct platform_device *pdev,
1426                                 int use_thermistors)
1427 {
1428         struct pc87360_data *data = platform_get_drvdata(pdev);
1429         int i, nr;
1430         const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
1431         const u8 init_temp[3] = { 2, 2, 1 };
1432         u8 reg;
1433 
1434         if (init >= 2 && data->innr) {
1435                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1436                                          PC87365_REG_IN_CONVRATE);
1437                 dev_info(&pdev->dev,
1438                          "VLM conversion set to 1s period, 160us delay\n");
1439                 pc87360_write_value(data, LD_IN, NO_BANK,
1440                                     PC87365_REG_IN_CONVRATE,
1441                                     (reg & 0xC0) | 0x11);
1442         }
1443 
1444         nr = data->innr < 11 ? data->innr : 11;
1445         for (i = 0; i < nr; i++) {
1446                 reg = pc87360_read_value(data, LD_IN, i,
1447                                          PC87365_REG_IN_STATUS);
1448                 dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
1449                 if (init >= init_in[i]) {
1450                         /* Forcibly enable voltage channel */
1451                         if (!(reg & CHAN_ENA)) {
1452                                 dev_dbg(&pdev->dev, "Forcibly enabling in%d\n",
1453                                         i);
1454                                 pc87360_write_value(data, LD_IN, i,
1455                                                     PC87365_REG_IN_STATUS,
1456                                                     (reg & 0x68) | 0x87);
1457                         }
1458                 }
1459         }
1460 
1461         /*
1462          * We can't blindly trust the Super-I/O space configuration bit,
1463          * most BIOS won't set it properly
1464          */
1465         dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
1466         for (i = 11; i < data->innr; i++) {
1467                 reg = pc87360_read_value(data, LD_IN, i,
1468                                          PC87365_REG_TEMP_STATUS);
1469                 use_thermistors = use_thermistors || (reg & CHAN_ENA);
1470                 /* thermistors are temp[4-6], measured on vin[11-14] */
1471                 dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
1472         }
1473         dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
1474 
1475         i = use_thermistors ? 2 : 0;
1476         for (; i < data->tempnr; i++) {
1477                 reg = pc87360_read_value(data, LD_TEMP, i,
1478                                          PC87365_REG_TEMP_STATUS);
1479                 dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i + 1, reg);
1480                 if (init >= init_temp[i]) {
1481                         /* Forcibly enable temperature channel */
1482                         if (!(reg & CHAN_ENA)) {
1483                                 dev_dbg(&pdev->dev,
1484                                         "Forcibly enabling temp%d\n", i + 1);
1485                                 pc87360_write_value(data, LD_TEMP, i,
1486                                                     PC87365_REG_TEMP_STATUS,
1487                                                     0xCF);
1488                         }
1489                 }
1490         }
1491 
1492         if (use_thermistors) {
1493                 for (i = 11; i < data->innr; i++) {
1494                         if (init >= init_in[i]) {
1495                                 /*
1496                                  * The pin may already be used by thermal
1497                                  * diodes
1498                                  */
1499                                 reg = pc87360_read_value(data, LD_TEMP,
1500                                       (i - 11) / 2, PC87365_REG_TEMP_STATUS);
1501                                 if (reg & CHAN_ENA) {
1502                                         dev_dbg(&pdev->dev,
1503                         "Skipping temp%d, pin already in use by temp%d\n",
1504                                                 i - 7, (i - 11) / 2);
1505                                         continue;
1506                                 }
1507 
1508                                 /* Forcibly enable thermistor channel */
1509                                 reg = pc87360_read_value(data, LD_IN, i,
1510                                                          PC87365_REG_IN_STATUS);
1511                                 if (!(reg & CHAN_ENA)) {
1512                                         dev_dbg(&pdev->dev,
1513                                                 "Forcibly enabling temp%d\n",
1514                                                 i - 7);
1515                                         pc87360_write_value(data, LD_IN, i,
1516                                                 PC87365_REG_TEMP_STATUS,
1517                                                 (reg & 0x60) | 0x8F);
1518                                 }
1519                         }
1520                 }
1521         }
1522 
1523         if (data->innr) {
1524                 reg = pc87360_read_value(data, LD_IN, NO_BANK,
1525                                          PC87365_REG_IN_CONFIG);
1526                 dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
1527                 if (reg & CHAN_ENA) {
1528                         dev_dbg(&pdev->dev,
1529                                 "Forcibly enabling monitoring (VLM)\n");
1530                         pc87360_write_value(data, LD_IN, NO_BANK,
1531                                             PC87365_REG_IN_CONFIG,
1532                                             reg & 0xFE);
1533                 }
1534         }
1535 
1536         if (data->tempnr) {
1537                 reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
1538                                          PC87365_REG_TEMP_CONFIG);
1539                 dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
1540                 if (reg & CHAN_ENA) {
1541                         dev_dbg(&pdev->dev,
1542                                 "Forcibly enabling monitoring (TMS)\n");
1543                         pc87360_write_value(data, LD_TEMP, NO_BANK,
1544                                             PC87365_REG_TEMP_CONFIG,
1545                                             reg & 0xFE);
1546                 }
1547 
1548                 if (init >= 2) {
1549                         /* Chip config as documented by National Semi. */
1550                         pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
1551                         /*
1552                          * We voluntarily omit the bank here, in case the
1553                          * sequence itself matters. It shouldn't be a problem,
1554                          * since nobody else is supposed to access the
1555                          * device at that point.
1556                          */
1557                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
1558                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
1559                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
1560                         pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
1561                 }
1562         }
1563 }
1564 
1565 static void pc87360_autodiv(struct device *dev, int nr)
1566 {
1567         struct pc87360_data *data = dev_get_drvdata(dev);
1568         u8 old_min = data->fan_min[nr];
1569 
1570         /* Increase clock divider if needed and possible */
1571         if ((data->fan_status[nr] & 0x04) /* overflow flag */
1572          || (data->fan[nr] >= 224)) { /* next to overflow */
1573                 if ((data->fan_status[nr] & 0x60) != 0x60) {
1574                         data->fan_status[nr] += 0x20;
1575                         data->fan_min[nr] >>= 1;
1576                         data->fan[nr] >>= 1;
1577                         dev_dbg(dev,
1578                                 "Increasing clock divider to %d for fan %d\n",
1579                                 FAN_DIV_FROM_REG(data->fan_status[nr]), nr + 1);
1580                 }
1581         } else {
1582                 /* Decrease clock divider if possible */
1583                 while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
1584                  && data->fan[nr] < 85 /* bad accuracy */
1585                  && (data->fan_status[nr] & 0x60) != 0x00) {
1586                         data->fan_status[nr] -= 0x20;
1587                         data->fan_min[nr] <<= 1;
1588                         data->fan[nr] <<= 1;
1589                         dev_dbg(dev,
1590                                 "Decreasing clock divider to %d for fan %d\n",
1591                                 FAN_DIV_FROM_REG(data->fan_status[nr]),
1592                                 nr + 1);
1593                 }
1594         }
1595 
1596         /* Write new fan min if it changed */
1597         if (old_min != data->fan_min[nr]) {
1598                 pc87360_write_value(data, LD_FAN, NO_BANK,
1599                                     PC87360_REG_FAN_MIN(nr),
1600                                     data->fan_min[nr]);
1601         }
1602 }
1603 
1604 static struct pc87360_data *pc87360_update_device(struct device *dev)
1605 {
1606         struct pc87360_data *data = dev_get_drvdata(dev);
1607         u8 i;
1608 
1609         mutex_lock(&data->update_lock);
1610 
1611         if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
1612                 dev_dbg(dev, "Data update\n");
1613 
1614                 /* Fans */
1615                 for (i = 0; i < data->fannr; i++) {
1616                         if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
1617                                 data->fan_status[i] =
1618                                         pc87360_read_value(data, LD_FAN,
1619                                         NO_BANK, PC87360_REG_FAN_STATUS(i));
1620                                 data->fan[i] = pc87360_read_value(data, LD_FAN,
1621                                                NO_BANK, PC87360_REG_FAN(i));
1622                                 data->fan_min[i] = pc87360_read_value(data,
1623                                                    LD_FAN, NO_BANK,
1624                                                    PC87360_REG_FAN_MIN(i));
1625                                 /* Change clock divider if needed */
1626                                 pc87360_autodiv(dev, i);
1627                                 /* Clear bits and write new divider */
1628                                 pc87360_write_value(data, LD_FAN, NO_BANK,
1629                                                     PC87360_REG_FAN_STATUS(i),
1630                                                     data->fan_status[i]);
1631                         }
1632                         if (FAN_CONFIG_CONTROL(data->fan_conf, i))
1633                                 data->pwm[i] = pc87360_read_value(data, LD_FAN,
1634                                                NO_BANK, PC87360_REG_PWM(i));
1635                 }
1636 
1637                 /* Voltages */
1638                 for (i = 0; i < data->innr; i++) {
1639                         data->in_status[i] = pc87360_read_value(data, LD_IN, i,
1640                                              PC87365_REG_IN_STATUS);
1641                         /* Clear bits */
1642                         pc87360_write_value(data, LD_IN, i,
1643                                             PC87365_REG_IN_STATUS,
1644                                             data->in_status[i]);
1645                         if ((data->in_status[i] & CHAN_READY) == CHAN_READY) {
1646                                 data->in[i] = pc87360_read_value(data, LD_IN,
1647                                               i, PC87365_REG_IN);
1648                         }
1649                         if (data->in_status[i] & CHAN_ENA) {
1650                                 data->in_min[i] = pc87360_read_value(data,
1651                                                   LD_IN, i,
1652                                                   PC87365_REG_IN_MIN);
1653                                 data->in_max[i] = pc87360_read_value(data,
1654                                                   LD_IN, i,
1655                                                   PC87365_REG_IN_MAX);
1656                                 if (i >= 11)
1657                                         data->in_crit[i-11] =
1658                                                 pc87360_read_value(data, LD_IN,
1659                                                 i, PC87365_REG_TEMP_CRIT);
1660                         }
1661                 }
1662                 if (data->innr) {
1663                         data->in_alarms = pc87360_read_value(data, LD_IN,
1664                                           NO_BANK, PC87365_REG_IN_ALARMS1)
1665                                         | ((pc87360_read_value(data, LD_IN,
1666                                             NO_BANK, PC87365_REG_IN_ALARMS2)
1667                                             & 0x07) << 8);
1668                         data->vid = (data->vid_conf & 0xE0) ?
1669                                     pc87360_read_value(data, LD_IN,
1670                                     NO_BANK, PC87365_REG_VID) : 0x1F;
1671                 }
1672 
1673                 /* Temperatures */
1674                 for (i = 0; i < data->tempnr; i++) {
1675                         data->temp_status[i] = pc87360_read_value(data,
1676                                                LD_TEMP, i,
1677                                                PC87365_REG_TEMP_STATUS);
1678                         /* Clear bits */
1679                         pc87360_write_value(data, LD_TEMP, i,
1680                                             PC87365_REG_TEMP_STATUS,
1681                                             data->temp_status[i]);
1682                         if ((data->temp_status[i] & CHAN_READY) == CHAN_READY) {
1683                                 data->temp[i] = pc87360_read_value(data,
1684                                                 LD_TEMP, i,
1685                                                 PC87365_REG_TEMP);
1686                         }
1687                         if (data->temp_status[i] & CHAN_ENA) {
1688                                 data->temp_min[i] = pc87360_read_value(data,
1689                                                     LD_TEMP, i,
1690                                                     PC87365_REG_TEMP_MIN);
1691                                 data->temp_max[i] = pc87360_read_value(data,
1692                                                     LD_TEMP, i,
1693                                                     PC87365_REG_TEMP_MAX);
1694                                 data->temp_crit[i] = pc87360_read_value(data,
1695                                                      LD_TEMP, i,
1696                                                      PC87365_REG_TEMP_CRIT);
1697                         }
1698                 }
1699                 if (data->tempnr) {
1700                         data->temp_alarms = pc87360_read_value(data, LD_TEMP,
1701                                             NO_BANK, PC87365_REG_TEMP_ALARMS)
1702                                             & 0x3F;
1703                 }
1704 
1705                 data->last_updated = jiffies;
1706                 data->valid = 1;
1707         }
1708 
1709         mutex_unlock(&data->update_lock);
1710 
1711         return data;
1712 }
1713 
1714 static int __init pc87360_device_add(unsigned short address)
1715 {
1716         struct resource res[3];
1717         int err, i, res_count;
1718 
1719         pdev = platform_device_alloc("pc87360", address);
1720         if (!pdev) {
1721                 err = -ENOMEM;
1722                 pr_err("Device allocation failed\n");
1723                 goto exit;
1724         }
1725 
1726         memset(res, 0, 3 * sizeof(struct resource));
1727         res_count = 0;
1728         for (i = 0; i < 3; i++) {
1729                 if (!extra_isa[i])
1730                         continue;
1731                 res[res_count].start = extra_isa[i];
1732                 res[res_count].end = extra_isa[i] + PC87360_EXTENT - 1;
1733                 res[res_count].name = "pc87360",
1734                 res[res_count].flags = IORESOURCE_IO,
1735 
1736                 err = acpi_check_resource_conflict(&res[res_count]);
1737                 if (err)
1738                         goto exit_device_put;
1739 
1740                 res_count++;
1741         }
1742 
1743         err = platform_device_add_resources(pdev, res, res_count);
1744         if (err) {
1745                 pr_err("Device resources addition failed (%d)\n", err);
1746                 goto exit_device_put;
1747         }
1748 
1749         err = platform_device_add(pdev);
1750         if (err) {
1751                 pr_err("Device addition failed (%d)\n", err);
1752                 goto exit_device_put;
1753         }
1754 
1755         return 0;
1756 
1757 exit_device_put:
1758         platform_device_put(pdev);
1759 exit:
1760         return err;
1761 }
1762 
1763 static int __init pc87360_init(void)
1764 {
1765         int err, i;
1766         unsigned short address = 0;
1767 
1768         if (pc87360_find(0x2e, &devid, extra_isa)
1769          && pc87360_find(0x4e, &devid, extra_isa)) {
1770                 pr_warn("PC8736x not detected, module not inserted\n");
1771                 return -ENODEV;
1772         }
1773 
1774         /* Arbitrarily pick one of the addresses */
1775         for (i = 0; i < 3; i++) {
1776                 if (extra_isa[i] != 0x0000) {
1777                         address = extra_isa[i];
1778                         break;
1779                 }
1780         }
1781 
1782         if (address == 0x0000) {
1783                 pr_warn("No active logical device, module not inserted\n");
1784                 return -ENODEV;
1785         }
1786 
1787         err = platform_driver_register(&pc87360_driver);
1788         if (err)
1789                 goto exit;
1790 
1791         /* Sets global pdev as a side effect */
1792         err = pc87360_device_add(address);
1793         if (err)
1794                 goto exit_driver;
1795 
1796         return 0;
1797 
1798  exit_driver:
1799         platform_driver_unregister(&pc87360_driver);
1800  exit:
1801         return err;
1802 }
1803 
1804 static void __exit pc87360_exit(void)
1805 {
1806         platform_device_unregister(pdev);
1807         platform_driver_unregister(&pc87360_driver);
1808 }
1809 
1810 
1811 MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
1812 MODULE_DESCRIPTION("PC8736x hardware monitor");
1813 MODULE_LICENSE("GPL");
1814 
1815 module_init(pc87360_init);
1816 module_exit(pc87360_exit);
1817 

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