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mm: get rid of pagevec_release_nonlru()
[linux-2.6/linux-2.6-openrd.git] / drivers / hwmon / dme1737.c
blob27a5d397f9a127f40b4d9eedbac8f3a205444414
1 /*
2 * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x and
3 * SCH5027 Super-I/O chips integrated hardware monitoring features.
4 * Copyright (c) 2007, 2008 Juerg Haefliger <juergh@gmail.com>
5 *
6 * This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access
7 * the chip registers if a DME1737, A8000, or SCH5027 is found and the ISA bus
8 * if a SCH311x chip is found. Both types of chips have very similar hardware
9 * monitoring capabilities but differ in the way they can be accessed.
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/platform_device.h>
32 #include <linux/hwmon.h>
33 #include <linux/hwmon-sysfs.h>
34 #include <linux/hwmon-vid.h>
35 #include <linux/err.h>
36 #include <linux/mutex.h>
37 #include <asm/io.h>
38
39 /* ISA device, if found */
40 static struct platform_device *pdev;
41
42 /* Module load parameters */
43 static int force_start;
44 module_param(force_start, bool, 0);
45 MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs");
46
47 static unsigned short force_id;
48 module_param(force_id, ushort, 0);
49 MODULE_PARM_DESC(force_id, "Override the detected device ID");
50
51 static int probe_all_addr;
52 module_param(probe_all_addr, bool, 0);
53 MODULE_PARM_DESC(probe_all_addr, "Include probing of non-standard LPC "
54 "addresses");
55
56 /* Addresses to scan */
57 static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
58
59 /* Insmod parameters */
60 I2C_CLIENT_INSMOD_2(dme1737, sch5027);
61
62 /* ISA chip types */
63 enum isa_chips { sch311x = sch5027 + 1 };
64
65 /* ---------------------------------------------------------------------
66 * Registers
67 *
68 * The sensors are defined as follows:
69 *
70 * Voltages Temperatures
71 * -------- ------------
72 * in0 +5VTR (+5V stdby) temp1 Remote diode 1
73 * in1 Vccp (proc core) temp2 Internal temp
74 * in2 VCC (internal +3.3V) temp3 Remote diode 2
75 * in3 +5V
76 * in4 +12V
77 * in5 VTR (+3.3V stby)
78 * in6 Vbat
79 *
80 * --------------------------------------------------------------------- */
81
82 /* Voltages (in) numbered 0-6 (ix) */
83 #define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) \
84 : 0x94 + (ix))
85 #define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \
86 : 0x91 + (ix) * 2)
87 #define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \
88 : 0x92 + (ix) * 2)
89
90 /* Temperatures (temp) numbered 0-2 (ix) */
91 #define DME1737_REG_TEMP(ix) (0x25 + (ix))
92 #define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2)
93 #define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2)
94 #define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \
95 : 0x1c + (ix))
96
97 /* Voltage and temperature LSBs
98 * The LSBs (4 bits each) are stored in 5 registers with the following layouts:
99 * IN_TEMP_LSB(0) = [in5, in6]
100 * IN_TEMP_LSB(1) = [temp3, temp1]
101 * IN_TEMP_LSB(2) = [in4, temp2]
102 * IN_TEMP_LSB(3) = [in3, in0]
103 * IN_TEMP_LSB(4) = [in2, in1] */
104 #define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix))
105 static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0};
106 static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4};
107 static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
108 static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0};
109
110 /* Fans numbered 0-5 (ix) */
111 #define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \
112 : 0xa1 + (ix) * 2)
113 #define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \
114 : 0xa5 + (ix) * 2)
115 #define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \
116 : 0xb2 + (ix))
117 #define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */
118
119 /* PWMs numbered 0-2, 4-5 (ix) */
120 #define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \
121 : 0xa1 + (ix))
122 #define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */
123 #define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */
124 #define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \
125 : 0xa3 + (ix))
126 /* The layout of the ramp rate registers is different from the other pwm
127 * registers. The bits for the 3 PWMs are stored in 2 registers:
128 * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0]
129 * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0] */
130 #define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */
131
132 /* Thermal zones 0-2 */
133 #define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix))
134 #define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix))
135 /* The layout of the hysteresis registers is different from the other zone
136 * registers. The bits for the 3 zones are stored in 2 registers:
137 * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
138 * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES] */
139 #define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix))
140
141 /* Alarm registers and bit mapping
142 * The 3 8-bit alarm registers will be concatenated to a single 32-bit
143 * alarm value [0, ALARM3, ALARM2, ALARM1]. */
144 #define DME1737_REG_ALARM1 0x41
145 #define DME1737_REG_ALARM2 0x42
146 #define DME1737_REG_ALARM3 0x83
147 static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17};
148 static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
149 static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
150
151 /* Miscellaneous registers */
152 #define DME1737_REG_DEVICE 0x3d
153 #define DME1737_REG_COMPANY 0x3e
154 #define DME1737_REG_VERSTEP 0x3f
155 #define DME1737_REG_CONFIG 0x40
156 #define DME1737_REG_CONFIG2 0x7f
157 #define DME1737_REG_VID 0x43
158 #define DME1737_REG_TACH_PWM 0x81
159
160 /* ---------------------------------------------------------------------
161 * Misc defines
162 * --------------------------------------------------------------------- */
163
164 /* Chip identification */
165 #define DME1737_COMPANY_SMSC 0x5c
166 #define DME1737_VERSTEP 0x88
167 #define DME1737_VERSTEP_MASK 0xf8
168 #define SCH311X_DEVICE 0x8c
169 #define SCH5027_VERSTEP 0x69
170
171 /* Length of ISA address segment */
172 #define DME1737_EXTENT 2
173
174 /* ---------------------------------------------------------------------
175 * Data structures and manipulation thereof
176 * --------------------------------------------------------------------- */
177
178 struct dme1737_data {
179 struct i2c_client *client; /* for I2C devices only */
180 struct device *hwmon_dev;
181 const char *name;
182 unsigned int addr; /* for ISA devices only */
183
184 struct mutex update_lock;
185 int valid; /* !=0 if following fields are valid */
186 unsigned long last_update; /* in jiffies */
187 unsigned long last_vbat; /* in jiffies */
188 enum chips type;
189 const int *in_nominal; /* pointer to IN_NOMINAL array */
190
191 u8 vid;
192 u8 pwm_rr_en;
193 u8 has_pwm;
194 u8 has_fan;
195
196 /* Register values */
197 u16 in[7];
198 u8 in_min[7];
199 u8 in_max[7];
200 s16 temp[3];
201 s8 temp_min[3];
202 s8 temp_max[3];
203 s8 temp_offset[3];
204 u8 config;
205 u8 config2;
206 u8 vrm;
207 u16 fan[6];
208 u16 fan_min[6];
209 u8 fan_max[2];
210 u8 fan_opt[6];
211 u8 pwm[6];
212 u8 pwm_min[3];
213 u8 pwm_config[3];
214 u8 pwm_acz[3];
215 u8 pwm_freq[6];
216 u8 pwm_rr[2];
217 u8 zone_low[3];
218 u8 zone_abs[3];
219 u8 zone_hyst[2];
220 u32 alarms;
221 };
222
223 /* Nominal voltage values */
224 static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
225 3300};
226 static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
227 3300};
228 static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
229 3300};
230 #define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \
231 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \
232 IN_NOMINAL_DME1737)
233
234 /* Voltage input
235 * Voltage inputs have 16 bits resolution, limit values have 8 bits
236 * resolution. */
237 static inline int IN_FROM_REG(int reg, int nominal, int res)
238 {
239 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
240 }
241
242 static inline int IN_TO_REG(int val, int nominal)
243 {
244 return SENSORS_LIMIT((val * 192 + nominal / 2) / nominal, 0, 255);
245 }
246
247 /* Temperature input
248 * The register values represent temperatures in 2's complement notation from
249 * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit
250 * values have 8 bits resolution. */
251 static inline int TEMP_FROM_REG(int reg, int res)
252 {
253 return (reg * 1000) >> (res - 8);
254 }
255
256 static inline int TEMP_TO_REG(int val)
257 {
258 return SENSORS_LIMIT((val < 0 ? val - 500 : val + 500) / 1000,
259 -128, 127);
260 }
261
262 /* Temperature range */
263 static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
264 10000, 13333, 16000, 20000, 26666, 32000,
265 40000, 53333, 80000};
266
267 static inline int TEMP_RANGE_FROM_REG(int reg)
268 {
269 return TEMP_RANGE[(reg >> 4) & 0x0f];
270 }
271
272 static int TEMP_RANGE_TO_REG(int val, int reg)
273 {
274 int i;
275
276 for (i = 15; i > 0; i--) {
277 if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2) {
278 break;
279 }
280 }
281
282 return (reg & 0x0f) | (i << 4);
283 }
284
285 /* Temperature hysteresis
286 * Register layout:
287 * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
288 * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx] */
289 static inline int TEMP_HYST_FROM_REG(int reg, int ix)
290 {
291 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
292 }
293
294 static inline int TEMP_HYST_TO_REG(int val, int ix, int reg)
295 {
296 int hyst = SENSORS_LIMIT((val + 500) / 1000, 0, 15);
297
298 return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4);
299 }
300
301 /* Fan input RPM */
302 static inline int FAN_FROM_REG(int reg, int tpc)
303 {
304 if (tpc) {
305 return tpc * reg;
306 } else {
307 return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg;
308 }
309 }
310
311 static inline int FAN_TO_REG(int val, int tpc)
312 {
313 if (tpc) {
314 return SENSORS_LIMIT(val / tpc, 0, 0xffff);
315 } else {
316 return (val <= 0) ? 0xffff :
317 SENSORS_LIMIT(90000 * 60 / val, 0, 0xfffe);
318 }
319 }
320
321 /* Fan TPC (tach pulse count)
322 * Converts a register value to a TPC multiplier or returns 0 if the tachometer
323 * is configured in legacy (non-tpc) mode */
324 static inline int FAN_TPC_FROM_REG(int reg)
325 {
326 return (reg & 0x20) ? 0 : 60 >> (reg & 0x03);
327 }
328
329 /* Fan type
330 * The type of a fan is expressed in number of pulses-per-revolution that it
331 * emits */
332 static inline int FAN_TYPE_FROM_REG(int reg)
333 {
334 int edge = (reg >> 1) & 0x03;
335
336 return (edge > 0) ? 1 << (edge - 1) : 0;
337 }
338
339 static inline int FAN_TYPE_TO_REG(int val, int reg)
340 {
341 int edge = (val == 4) ? 3 : val;
342
343 return (reg & 0xf9) | (edge << 1);
344 }
345
346 /* Fan max RPM */
347 static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
348 0x11, 0x0f, 0x0e};
349
350 static int FAN_MAX_FROM_REG(int reg)
351 {
352 int i;
353
354 for (i = 10; i > 0; i--) {
355 if (reg == FAN_MAX[i]) {
356 break;
357 }
358 }
359
360 return 1000 + i * 500;
361 }
362
363 static int FAN_MAX_TO_REG(int val)
364 {
365 int i;
366
367 for (i = 10; i > 0; i--) {
368 if (val > (1000 + (i - 1) * 500)) {
369 break;
370 }
371 }
372
373 return FAN_MAX[i];
374 }
375
376 /* PWM enable
377 * Register to enable mapping:
378 * 000: 2 fan on zone 1 auto
379 * 001: 2 fan on zone 2 auto
380 * 010: 2 fan on zone 3 auto
381 * 011: 0 fan full on
382 * 100: -1 fan disabled
383 * 101: 2 fan on hottest of zones 2,3 auto
384 * 110: 2 fan on hottest of zones 1,2,3 auto
385 * 111: 1 fan in manual mode */
386 static inline int PWM_EN_FROM_REG(int reg)
387 {
388 static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1};
389
390 return en[(reg >> 5) & 0x07];
391 }
392
393 static inline int PWM_EN_TO_REG(int val, int reg)
394 {
395 int en = (val == 1) ? 7 : 3;
396
397 return (reg & 0x1f) | ((en & 0x07) << 5);
398 }
399
400 /* PWM auto channels zone
401 * Register to auto channels zone mapping (ACZ is a bitfield with bit x
402 * corresponding to zone x+1):
403 * 000: 001 fan on zone 1 auto
404 * 001: 010 fan on zone 2 auto
405 * 010: 100 fan on zone 3 auto
406 * 011: 000 fan full on
407 * 100: 000 fan disabled
408 * 101: 110 fan on hottest of zones 2,3 auto
409 * 110: 111 fan on hottest of zones 1,2,3 auto
410 * 111: 000 fan in manual mode */
411 static inline int PWM_ACZ_FROM_REG(int reg)
412 {
413 static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0};
414
415 return acz[(reg >> 5) & 0x07];
416 }
417
418 static inline int PWM_ACZ_TO_REG(int val, int reg)
419 {
420 int acz = (val == 4) ? 2 : val - 1;
421
422 return (reg & 0x1f) | ((acz & 0x07) << 5);
423 }
424
425 /* PWM frequency */
426 static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
427 15000, 20000, 30000, 25000, 0, 0, 0, 0};
428
429 static inline int PWM_FREQ_FROM_REG(int reg)
430 {
431 return PWM_FREQ[reg & 0x0f];
432 }
433
434 static int PWM_FREQ_TO_REG(int val, int reg)
435 {
436 int i;
437
438 /* the first two cases are special - stupid chip design! */
439 if (val > 27500) {
440 i = 10;
441 } else if (val > 22500) {
442 i = 11;
443 } else {
444 for (i = 9; i > 0; i--) {
445 if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2) {
446 break;
447 }
448 }
449 }
450
451 return (reg & 0xf0) | i;
452 }
453
454 /* PWM ramp rate
455 * Register layout:
456 * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0]
457 * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0] */
458 static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
459
460 static inline int PWM_RR_FROM_REG(int reg, int ix)
461 {
462 int rr = (ix == 1) ? reg >> 4 : reg;
463
464 return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0;
465 }
466
467 static int PWM_RR_TO_REG(int val, int ix, int reg)
468 {
469 int i;
470
471 for (i = 0; i < 7; i++) {
472 if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2) {
473 break;
474 }
475 }
476
477 return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i;
478 }
479
480 /* PWM ramp rate enable */
481 static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
482 {
483 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
484 }
485
486 static inline int PWM_RR_EN_TO_REG(int val, int ix, int reg)
487 {
488 int en = (ix == 1) ? 0x80 : 0x08;
489
490 return val ? reg | en : reg & ~en;
491 }
492
493 /* PWM min/off
494 * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for
495 * the register layout). */
496 static inline int PWM_OFF_FROM_REG(int reg, int ix)
497 {
498 return (reg >> (ix + 5)) & 0x01;
499 }
500
501 static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
502 {
503 return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5));
504 }
505
506 /* ---------------------------------------------------------------------
507 * Device I/O access
508 *
509 * ISA access is performed through an index/data register pair and needs to
510 * be protected by a mutex during runtime (not required for initialization).
511 * We use data->update_lock for this and need to ensure that we acquire it
512 * before calling dme1737_read or dme1737_write.
513 * --------------------------------------------------------------------- */
514
515 static u8 dme1737_read(const struct dme1737_data *data, u8 reg)
516 {
517 struct i2c_client *client = data->client;
518 s32 val;
519
520 if (client) { /* I2C device */
521 val = i2c_smbus_read_byte_data(client, reg);
522
523 if (val < 0) {
524 dev_warn(&client->dev, "Read from register "
525 "0x%02x failed! Please report to the driver "
526 "maintainer.\n", reg);
527 }
528 } else { /* ISA device */
529 outb(reg, data->addr);
530 val = inb(data->addr + 1);
531 }
532
533 return val;
534 }
535
536 static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val)
537 {
538 struct i2c_client *client = data->client;
539 s32 res = 0;
540
541 if (client) { /* I2C device */
542 res = i2c_smbus_write_byte_data(client, reg, val);
543
544 if (res < 0) {
545 dev_warn(&client->dev, "Write to register "
546 "0x%02x failed! Please report to the driver "
547 "maintainer.\n", reg);
548 }
549 } else { /* ISA device */
550 outb(reg, data->addr);
551 outb(val, data->addr + 1);
552 }
553
554 return res;
555 }
556
557 static struct dme1737_data *dme1737_update_device(struct device *dev)
558 {
559 struct dme1737_data *data = dev_get_drvdata(dev);
560 int ix;
561 u8 lsb[5];
562
563 mutex_lock(&data->update_lock);
564
565 /* Enable a Vbat monitoring cycle every 10 mins */
566 if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) {
567 dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data,
568 DME1737_REG_CONFIG) | 0x10);
569 data->last_vbat = jiffies;
570 }
571
572 /* Sample register contents every 1 sec */
573 if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
574 if (data->type != sch5027) {
575 data->vid = dme1737_read(data, DME1737_REG_VID) &
576 0x3f;
577 }
578
579 /* In (voltage) registers */
580 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
581 /* Voltage inputs are stored as 16 bit values even
582 * though they have only 12 bits resolution. This is
583 * to make it consistent with the temp inputs. */
584 data->in[ix] = dme1737_read(data,
585 DME1737_REG_IN(ix)) << 8;
586 data->in_min[ix] = dme1737_read(data,
587 DME1737_REG_IN_MIN(ix));
588 data->in_max[ix] = dme1737_read(data,
589 DME1737_REG_IN_MAX(ix));
590 }
591
592 /* Temp registers */
593 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
594 /* Temp inputs are stored as 16 bit values even
595 * though they have only 12 bits resolution. This is
596 * to take advantage of implicit conversions between
597 * register values (2's complement) and temp values
598 * (signed decimal). */
599 data->temp[ix] = dme1737_read(data,
600 DME1737_REG_TEMP(ix)) << 8;
601 data->temp_min[ix] = dme1737_read(data,
602 DME1737_REG_TEMP_MIN(ix));
603 data->temp_max[ix] = dme1737_read(data,
604 DME1737_REG_TEMP_MAX(ix));
605 if (data->type != sch5027) {
606 data->temp_offset[ix] = dme1737_read(data,
607 DME1737_REG_TEMP_OFFSET(ix));
608 }
609 }
610
611 /* In and temp LSB registers
612 * The LSBs are latched when the MSBs are read, so the order in
613 * which the registers are read (MSB first, then LSB) is
614 * important! */
615 for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) {
616 lsb[ix] = dme1737_read(data,
617 DME1737_REG_IN_TEMP_LSB(ix));
618 }
619 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
620 data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] <<
621 DME1737_REG_IN_LSB_SHL[ix]) & 0xf0;
622 }
623 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
624 data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] <<
625 DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0;
626 }
627
628 /* Fan registers */
629 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
630 /* Skip reading registers if optional fans are not
631 * present */
632 if (!(data->has_fan & (1 << ix))) {
633 continue;
634 }
635 data->fan[ix] = dme1737_read(data,
636 DME1737_REG_FAN(ix));
637 data->fan[ix] |= dme1737_read(data,
638 DME1737_REG_FAN(ix) + 1) << 8;
639 data->fan_min[ix] = dme1737_read(data,
640 DME1737_REG_FAN_MIN(ix));
641 data->fan_min[ix] |= dme1737_read(data,
642 DME1737_REG_FAN_MIN(ix) + 1) << 8;
643 data->fan_opt[ix] = dme1737_read(data,
644 DME1737_REG_FAN_OPT(ix));
645 /* fan_max exists only for fan[5-6] */
646 if (ix > 3) {
647 data->fan_max[ix - 4] = dme1737_read(data,
648 DME1737_REG_FAN_MAX(ix));
649 }
650 }
651
652 /* PWM registers */
653 for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
654 /* Skip reading registers if optional PWMs are not
655 * present */
656 if (!(data->has_pwm & (1 << ix))) {
657 continue;
658 }
659 data->pwm[ix] = dme1737_read(data,
660 DME1737_REG_PWM(ix));
661 data->pwm_freq[ix] = dme1737_read(data,
662 DME1737_REG_PWM_FREQ(ix));
663 /* pwm_config and pwm_min exist only for pwm[1-3] */
664 if (ix < 3) {
665 data->pwm_config[ix] = dme1737_read(data,
666 DME1737_REG_PWM_CONFIG(ix));
667 data->pwm_min[ix] = dme1737_read(data,
668 DME1737_REG_PWM_MIN(ix));
669 }
670 }
671 for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) {
672 data->pwm_rr[ix] = dme1737_read(data,
673 DME1737_REG_PWM_RR(ix));
674 }
675
676 /* Thermal zone registers */
677 for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
678 data->zone_low[ix] = dme1737_read(data,
679 DME1737_REG_ZONE_LOW(ix));
680 data->zone_abs[ix] = dme1737_read(data,
681 DME1737_REG_ZONE_ABS(ix));
682 }
683 if (data->type != sch5027) {
684 for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
685 data->zone_hyst[ix] = dme1737_read(data,
686 DME1737_REG_ZONE_HYST(ix));
687 }
688 }
689
690 /* Alarm registers */
691 data->alarms = dme1737_read(data,
692 DME1737_REG_ALARM1);
693 /* Bit 7 tells us if the other alarm registers are non-zero and
694 * therefore also need to be read */
695 if (data->alarms & 0x80) {
696 data->alarms |= dme1737_read(data,
697 DME1737_REG_ALARM2) << 8;
698 data->alarms |= dme1737_read(data,
699 DME1737_REG_ALARM3) << 16;
700 }
701
702 /* The ISA chips require explicit clearing of alarm bits.
703 * Don't worry, an alarm will come back if the condition
704 * that causes it still exists */
705 if (!data->client) {
706 if (data->alarms & 0xff0000) {
707 dme1737_write(data, DME1737_REG_ALARM3,
708 0xff);
709 }
710 if (data->alarms & 0xff00) {
711 dme1737_write(data, DME1737_REG_ALARM2,
712 0xff);
713 }
714 if (data->alarms & 0xff) {
715 dme1737_write(data, DME1737_REG_ALARM1,
716 0xff);
717 }
718 }
719
720 data->last_update = jiffies;
721 data->valid = 1;
722 }
723
724 mutex_unlock(&data->update_lock);
725
726 return data;
727 }
728
729 /* ---------------------------------------------------------------------
730 * Voltage sysfs attributes
731 * ix = [0-5]
732 * --------------------------------------------------------------------- */
733
734 #define SYS_IN_INPUT 0
735 #define SYS_IN_MIN 1
736 #define SYS_IN_MAX 2
737 #define SYS_IN_ALARM 3
738
739 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
740 char *buf)
741 {
742 struct dme1737_data *data = dme1737_update_device(dev);
743 struct sensor_device_attribute_2
744 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
745 int ix = sensor_attr_2->index;
746 int fn = sensor_attr_2->nr;
747 int res;
748
749 switch (fn) {
750 case SYS_IN_INPUT:
751 res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16);
752 break;
753 case SYS_IN_MIN:
754 res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8);
755 break;
756 case SYS_IN_MAX:
757 res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8);
758 break;
759 case SYS_IN_ALARM:
760 res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01;
761 break;
762 default:
763 res = 0;
764 dev_dbg(dev, "Unknown function %d.\n", fn);
765 }
766
767 return sprintf(buf, "%d\n", res);
768 }
769
770 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
771 const char *buf, size_t count)
772 {
773 struct dme1737_data *data = dev_get_drvdata(dev);
774 struct sensor_device_attribute_2
775 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
776 int ix = sensor_attr_2->index;
777 int fn = sensor_attr_2->nr;
778 long val = simple_strtol(buf, NULL, 10);
779
780 mutex_lock(&data->update_lock);
781 switch (fn) {
782 case SYS_IN_MIN:
783 data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]);
784 dme1737_write(data, DME1737_REG_IN_MIN(ix),
785 data->in_min[ix]);
786 break;
787 case SYS_IN_MAX:
788 data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]);
789 dme1737_write(data, DME1737_REG_IN_MAX(ix),
790 data->in_max[ix]);
791 break;
792 default:
793 dev_dbg(dev, "Unknown function %d.\n", fn);
794 }
795 mutex_unlock(&data->update_lock);
796
797 return count;
798 }
799
800 /* ---------------------------------------------------------------------
801 * Temperature sysfs attributes
802 * ix = [0-2]
803 * --------------------------------------------------------------------- */
804
805 #define SYS_TEMP_INPUT 0
806 #define SYS_TEMP_MIN 1
807 #define SYS_TEMP_MAX 2
808 #define SYS_TEMP_OFFSET 3
809 #define SYS_TEMP_ALARM 4
810 #define SYS_TEMP_FAULT 5
811
812 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
813 char *buf)
814 {
815 struct dme1737_data *data = dme1737_update_device(dev);
816 struct sensor_device_attribute_2
817 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
818 int ix = sensor_attr_2->index;
819 int fn = sensor_attr_2->nr;
820 int res;
821
822 switch (fn) {
823 case SYS_TEMP_INPUT:
824 res = TEMP_FROM_REG(data->temp[ix], 16);
825 break;
826 case SYS_TEMP_MIN:
827 res = TEMP_FROM_REG(data->temp_min[ix], 8);
828 break;
829 case SYS_TEMP_MAX:
830 res = TEMP_FROM_REG(data->temp_max[ix], 8);
831 break;
832 case SYS_TEMP_OFFSET:
833 res = TEMP_FROM_REG(data->temp_offset[ix], 8);
834 break;
835 case SYS_TEMP_ALARM:
836 res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01;
837 break;
838 case SYS_TEMP_FAULT:
839 res = (((u16)data->temp[ix] & 0xff00) == 0x8000);
840 break;
841 default:
842 res = 0;
843 dev_dbg(dev, "Unknown function %d.\n", fn);
844 }
845
846 return sprintf(buf, "%d\n", res);
847 }
848
849 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
850 const char *buf, size_t count)
851 {
852 struct dme1737_data *data = dev_get_drvdata(dev);
853 struct sensor_device_attribute_2
854 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
855 int ix = sensor_attr_2->index;
856 int fn = sensor_attr_2->nr;
857 long val = simple_strtol(buf, NULL, 10);
858
859 mutex_lock(&data->update_lock);
860 switch (fn) {
861 case SYS_TEMP_MIN:
862 data->temp_min[ix] = TEMP_TO_REG(val);
863 dme1737_write(data, DME1737_REG_TEMP_MIN(ix),
864 data->temp_min[ix]);
865 break;
866 case SYS_TEMP_MAX:
867 data->temp_max[ix] = TEMP_TO_REG(val);
868 dme1737_write(data, DME1737_REG_TEMP_MAX(ix),
869 data->temp_max[ix]);
870 break;
871 case SYS_TEMP_OFFSET:
872 data->temp_offset[ix] = TEMP_TO_REG(val);
873 dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix),
874 data->temp_offset[ix]);
875 break;
876 default:
877 dev_dbg(dev, "Unknown function %d.\n", fn);
878 }
879 mutex_unlock(&data->update_lock);
880
881 return count;
882 }
883
884 /* ---------------------------------------------------------------------
885 * Zone sysfs attributes
886 * ix = [0-2]
887 * --------------------------------------------------------------------- */
888
889 #define SYS_ZONE_AUTO_CHANNELS_TEMP 0
890 #define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1
891 #define SYS_ZONE_AUTO_POINT1_TEMP 2
892 #define SYS_ZONE_AUTO_POINT2_TEMP 3
893 #define SYS_ZONE_AUTO_POINT3_TEMP 4
894
895 static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
896 char *buf)
897 {
898 struct dme1737_data *data = dme1737_update_device(dev);
899 struct sensor_device_attribute_2
900 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
901 int ix = sensor_attr_2->index;
902 int fn = sensor_attr_2->nr;
903 int res;
904
905 switch (fn) {
906 case SYS_ZONE_AUTO_CHANNELS_TEMP:
907 /* check config2 for non-standard temp-to-zone mapping */
908 if ((ix == 1) && (data->config2 & 0x02)) {
909 res = 4;
910 } else {
911 res = 1 << ix;
912 }
913 break;
914 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
915 res = TEMP_FROM_REG(data->zone_low[ix], 8) -
916 TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix);
917 break;
918 case SYS_ZONE_AUTO_POINT1_TEMP:
919 res = TEMP_FROM_REG(data->zone_low[ix], 8);
920 break;
921 case SYS_ZONE_AUTO_POINT2_TEMP:
922 /* pwm_freq holds the temp range bits in the upper nibble */
923 res = TEMP_FROM_REG(data->zone_low[ix], 8) +
924 TEMP_RANGE_FROM_REG(data->pwm_freq[ix]);
925 break;
926 case SYS_ZONE_AUTO_POINT3_TEMP:
927 res = TEMP_FROM_REG(data->zone_abs[ix], 8);
928 break;
929 default:
930 res = 0;
931 dev_dbg(dev, "Unknown function %d.\n", fn);
932 }
933
934 return sprintf(buf, "%d\n", res);
935 }
936
937 static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
938 const char *buf, size_t count)
939 {
940 struct dme1737_data *data = dev_get_drvdata(dev);
941 struct sensor_device_attribute_2
942 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
943 int ix = sensor_attr_2->index;
944 int fn = sensor_attr_2->nr;
945 long val = simple_strtol(buf, NULL, 10);
946
947 mutex_lock(&data->update_lock);
948 switch (fn) {
949 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
950 /* Refresh the cache */
951 data->zone_low[ix] = dme1737_read(data,
952 DME1737_REG_ZONE_LOW(ix));
953 /* Modify the temp hyst value */
954 data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(
955 TEMP_FROM_REG(data->zone_low[ix], 8) -
956 val, ix, dme1737_read(data,
957 DME1737_REG_ZONE_HYST(ix == 2)));
958 dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2),
959 data->zone_hyst[ix == 2]);
960 break;
961 case SYS_ZONE_AUTO_POINT1_TEMP:
962 data->zone_low[ix] = TEMP_TO_REG(val);
963 dme1737_write(data, DME1737_REG_ZONE_LOW(ix),
964 data->zone_low[ix]);
965 break;
966 case SYS_ZONE_AUTO_POINT2_TEMP:
967 /* Refresh the cache */
968 data->zone_low[ix] = dme1737_read(data,
969 DME1737_REG_ZONE_LOW(ix));
970 /* Modify the temp range value (which is stored in the upper
971 * nibble of the pwm_freq register) */
972 data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val -
973 TEMP_FROM_REG(data->zone_low[ix], 8),
974 dme1737_read(data,
975 DME1737_REG_PWM_FREQ(ix)));
976 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
977 data->pwm_freq[ix]);
978 break;
979 case SYS_ZONE_AUTO_POINT3_TEMP:
980 data->zone_abs[ix] = TEMP_TO_REG(val);
981 dme1737_write(data, DME1737_REG_ZONE_ABS(ix),
982 data->zone_abs[ix]);
983 break;
984 default:
985 dev_dbg(dev, "Unknown function %d.\n", fn);
986 }
987 mutex_unlock(&data->update_lock);
988
989 return count;
990 }
991
992 /* ---------------------------------------------------------------------
993 * Fan sysfs attributes
994 * ix = [0-5]
995 * --------------------------------------------------------------------- */
996
997 #define SYS_FAN_INPUT 0
998 #define SYS_FAN_MIN 1
999 #define SYS_FAN_MAX 2
1000 #define SYS_FAN_ALARM 3
1001 #define SYS_FAN_TYPE 4
1002
1003 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1004 char *buf)
1005 {
1006 struct dme1737_data *data = dme1737_update_device(dev);
1007 struct sensor_device_attribute_2
1008 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1009 int ix = sensor_attr_2->index;
1010 int fn = sensor_attr_2->nr;
1011 int res;
1012
1013 switch (fn) {
1014 case SYS_FAN_INPUT:
1015 res = FAN_FROM_REG(data->fan[ix],
1016 ix < 4 ? 0 :
1017 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1018 break;
1019 case SYS_FAN_MIN:
1020 res = FAN_FROM_REG(data->fan_min[ix],
1021 ix < 4 ? 0 :
1022 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1023 break;
1024 case SYS_FAN_MAX:
1025 /* only valid for fan[5-6] */
1026 res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]);
1027 break;
1028 case SYS_FAN_ALARM:
1029 res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01;
1030 break;
1031 case SYS_FAN_TYPE:
1032 /* only valid for fan[1-4] */
1033 res = FAN_TYPE_FROM_REG(data->fan_opt[ix]);
1034 break;
1035 default:
1036 res = 0;
1037 dev_dbg(dev, "Unknown function %d.\n", fn);
1038 }
1039
1040 return sprintf(buf, "%d\n", res);
1041 }
1042
1043 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1044 const char *buf, size_t count)
1045 {
1046 struct dme1737_data *data = dev_get_drvdata(dev);
1047 struct sensor_device_attribute_2
1048 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1049 int ix = sensor_attr_2->index;
1050 int fn = sensor_attr_2->nr;
1051 long val = simple_strtol(buf, NULL, 10);
1052
1053 mutex_lock(&data->update_lock);
1054 switch (fn) {
1055 case SYS_FAN_MIN:
1056 if (ix < 4) {
1057 data->fan_min[ix] = FAN_TO_REG(val, 0);
1058 } else {
1059 /* Refresh the cache */
1060 data->fan_opt[ix] = dme1737_read(data,
1061 DME1737_REG_FAN_OPT(ix));
1062 /* Modify the fan min value */
1063 data->fan_min[ix] = FAN_TO_REG(val,
1064 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1065 }
1066 dme1737_write(data, DME1737_REG_FAN_MIN(ix),
1067 data->fan_min[ix] & 0xff);
1068 dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1,
1069 data->fan_min[ix] >> 8);
1070 break;
1071 case SYS_FAN_MAX:
1072 /* Only valid for fan[5-6] */
1073 data->fan_max[ix - 4] = FAN_MAX_TO_REG(val);
1074 dme1737_write(data, DME1737_REG_FAN_MAX(ix),
1075 data->fan_max[ix - 4]);
1076 break;
1077 case SYS_FAN_TYPE:
1078 /* Only valid for fan[1-4] */
1079 if (!(val == 1 || val == 2 || val == 4)) {
1080 count = -EINVAL;
1081 dev_warn(dev, "Fan type value %ld not "
1082 "supported. Choose one of 1, 2, or 4.\n",
1083 val);
1084 goto exit;
1085 }
1086 data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data,
1087 DME1737_REG_FAN_OPT(ix)));
1088 dme1737_write(data, DME1737_REG_FAN_OPT(ix),
1089 data->fan_opt[ix]);
1090 break;
1091 default:
1092 dev_dbg(dev, "Unknown function %d.\n", fn);
1093 }
1094 exit:
1095 mutex_unlock(&data->update_lock);
1096
1097 return count;
1098 }
1099
1100 /* ---------------------------------------------------------------------
1101 * PWM sysfs attributes
1102 * ix = [0-4]
1103 * --------------------------------------------------------------------- */
1104
1105 #define SYS_PWM 0
1106 #define SYS_PWM_FREQ 1
1107 #define SYS_PWM_ENABLE 2
1108 #define SYS_PWM_RAMP_RATE 3
1109 #define SYS_PWM_AUTO_CHANNELS_ZONE 4
1110 #define SYS_PWM_AUTO_PWM_MIN 5
1111 #define SYS_PWM_AUTO_POINT1_PWM 6
1112 #define SYS_PWM_AUTO_POINT2_PWM 7
1113
1114 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1115 char *buf)
1116 {
1117 struct dme1737_data *data = dme1737_update_device(dev);
1118 struct sensor_device_attribute_2
1119 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1120 int ix = sensor_attr_2->index;
1121 int fn = sensor_attr_2->nr;
1122 int res;
1123
1124 switch (fn) {
1125 case SYS_PWM:
1126 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0) {
1127 res = 255;
1128 } else {
1129 res = data->pwm[ix];
1130 }
1131 break;
1132 case SYS_PWM_FREQ:
1133 res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
1134 break;
1135 case SYS_PWM_ENABLE:
1136 if (ix > 3) {
1137 res = 1; /* pwm[5-6] hard-wired to manual mode */
1138 } else {
1139 res = PWM_EN_FROM_REG(data->pwm_config[ix]);
1140 }
1141 break;
1142 case SYS_PWM_RAMP_RATE:
1143 /* Only valid for pwm[1-3] */
1144 res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix);
1145 break;
1146 case SYS_PWM_AUTO_CHANNELS_ZONE:
1147 /* Only valid for pwm[1-3] */
1148 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1149 res = PWM_ACZ_FROM_REG(data->pwm_config[ix]);
1150 } else {
1151 res = data->pwm_acz[ix];
1152 }
1153 break;
1154 case SYS_PWM_AUTO_PWM_MIN:
1155 /* Only valid for pwm[1-3] */
1156 if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix)) {
1157 res = data->pwm_min[ix];
1158 } else {
1159 res = 0;
1160 }
1161 break;
1162 case SYS_PWM_AUTO_POINT1_PWM:
1163 /* Only valid for pwm[1-3] */
1164 res = data->pwm_min[ix];
1165 break;
1166 case SYS_PWM_AUTO_POINT2_PWM:
1167 /* Only valid for pwm[1-3] */
1168 res = 255; /* hard-wired */
1169 break;
1170 default:
1171 res = 0;
1172 dev_dbg(dev, "Unknown function %d.\n", fn);
1173 }
1174
1175 return sprintf(buf, "%d\n", res);
1176 }
1177
1178 static struct attribute *dme1737_pwm_chmod_attr[];
1179 static void dme1737_chmod_file(struct device*, struct attribute*, mode_t);
1180
1181 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1182 const char *buf, size_t count)
1183 {
1184 struct dme1737_data *data = dev_get_drvdata(dev);
1185 struct sensor_device_attribute_2
1186 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1187 int ix = sensor_attr_2->index;
1188 int fn = sensor_attr_2->nr;
1189 long val = simple_strtol(buf, NULL, 10);
1190
1191 mutex_lock(&data->update_lock);
1192 switch (fn) {
1193 case SYS_PWM:
1194 data->pwm[ix] = SENSORS_LIMIT(val, 0, 255);
1195 dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]);
1196 break;
1197 case SYS_PWM_FREQ:
1198 data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data,
1199 DME1737_REG_PWM_FREQ(ix)));
1200 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1201 data->pwm_freq[ix]);
1202 break;
1203 case SYS_PWM_ENABLE:
1204 /* Only valid for pwm[1-3] */
1205 if (val < 0 || val > 2) {
1206 count = -EINVAL;
1207 dev_warn(dev, "PWM enable %ld not "
1208 "supported. Choose one of 0, 1, or 2.\n",
1209 val);
1210 goto exit;
1211 }
1212 /* Refresh the cache */
1213 data->pwm_config[ix] = dme1737_read(data,
1214 DME1737_REG_PWM_CONFIG(ix));
1215 if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) {
1216 /* Bail out if no change */
1217 goto exit;
1218 }
1219 /* Do some housekeeping if we are currently in auto mode */
1220 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1221 /* Save the current zone channel assignment */
1222 data->pwm_acz[ix] = PWM_ACZ_FROM_REG(
1223 data->pwm_config[ix]);
1224 /* Save the current ramp rate state and disable it */
1225 data->pwm_rr[ix > 0] = dme1737_read(data,
1226 DME1737_REG_PWM_RR(ix > 0));
1227 data->pwm_rr_en &= ~(1 << ix);
1228 if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) {
1229 data->pwm_rr_en |= (1 << ix);
1230 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix,
1231 data->pwm_rr[ix > 0]);
1232 dme1737_write(data,
1233 DME1737_REG_PWM_RR(ix > 0),
1234 data->pwm_rr[ix > 0]);
1235 }
1236 }
1237 /* Set the new PWM mode */
1238 switch (val) {
1239 case 0:
1240 /* Change permissions of pwm[ix] to read-only */
1241 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1242 S_IRUGO);
1243 /* Turn fan fully on */
1244 data->pwm_config[ix] = PWM_EN_TO_REG(0,
1245 data->pwm_config[ix]);
1246 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1247 data->pwm_config[ix]);
1248 break;
1249 case 1:
1250 /* Turn on manual mode */
1251 data->pwm_config[ix] = PWM_EN_TO_REG(1,
1252 data->pwm_config[ix]);
1253 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1254 data->pwm_config[ix]);
1255 /* Change permissions of pwm[ix] to read-writeable */
1256 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1257 S_IRUGO | S_IWUSR);
1258 break;
1259 case 2:
1260 /* Change permissions of pwm[ix] to read-only */
1261 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1262 S_IRUGO);
1263 /* Turn on auto mode using the saved zone channel
1264 * assignment */
1265 data->pwm_config[ix] = PWM_ACZ_TO_REG(
1266 data->pwm_acz[ix],
1267 data->pwm_config[ix]);
1268 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1269 data->pwm_config[ix]);
1270 /* Enable PWM ramp rate if previously enabled */
1271 if (data->pwm_rr_en & (1 << ix)) {
1272 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix,
1273 dme1737_read(data,
1274 DME1737_REG_PWM_RR(ix > 0)));
1275 dme1737_write(data,
1276 DME1737_REG_PWM_RR(ix > 0),
1277 data->pwm_rr[ix > 0]);
1278 }
1279 break;
1280 }
1281 break;
1282 case SYS_PWM_RAMP_RATE:
1283 /* Only valid for pwm[1-3] */
1284 /* Refresh the cache */
1285 data->pwm_config[ix] = dme1737_read(data,
1286 DME1737_REG_PWM_CONFIG(ix));
1287 data->pwm_rr[ix > 0] = dme1737_read(data,
1288 DME1737_REG_PWM_RR(ix > 0));
1289 /* Set the ramp rate value */
1290 if (val > 0) {
1291 data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix,
1292 data->pwm_rr[ix > 0]);
1293 }
1294 /* Enable/disable the feature only if the associated PWM
1295 * output is in automatic mode. */
1296 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1297 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix,
1298 data->pwm_rr[ix > 0]);
1299 }
1300 dme1737_write(data, DME1737_REG_PWM_RR(ix > 0),
1301 data->pwm_rr[ix > 0]);
1302 break;
1303 case SYS_PWM_AUTO_CHANNELS_ZONE:
1304 /* Only valid for pwm[1-3] */
1305 if (!(val == 1 || val == 2 || val == 4 ||
1306 val == 6 || val == 7)) {
1307 count = -EINVAL;
1308 dev_warn(dev, "PWM auto channels zone %ld "
1309 "not supported. Choose one of 1, 2, 4, 6, "
1310 "or 7.\n", val);
1311 goto exit;
1312 }
1313 /* Refresh the cache */
1314 data->pwm_config[ix] = dme1737_read(data,
1315 DME1737_REG_PWM_CONFIG(ix));
1316 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1317 /* PWM is already in auto mode so update the temp
1318 * channel assignment */
1319 data->pwm_config[ix] = PWM_ACZ_TO_REG(val,
1320 data->pwm_config[ix]);
1321 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1322 data->pwm_config[ix]);
1323 } else {
1324 /* PWM is not in auto mode so we save the temp
1325 * channel assignment for later use */
1326 data->pwm_acz[ix] = val;
1327 }
1328 break;
1329 case SYS_PWM_AUTO_PWM_MIN:
1330 /* Only valid for pwm[1-3] */
1331 /* Refresh the cache */
1332 data->pwm_min[ix] = dme1737_read(data,
1333 DME1737_REG_PWM_MIN(ix));
1334 /* There are only 2 values supported for the auto_pwm_min
1335 * value: 0 or auto_point1_pwm. So if the temperature drops
1336 * below the auto_point1_temp_hyst value, the fan either turns
1337 * off or runs at auto_point1_pwm duty-cycle. */
1338 if (val > ((data->pwm_min[ix] + 1) / 2)) {
1339 data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
1340 dme1737_read(data,
1341 DME1737_REG_PWM_RR(0)));
1342 } else {
1343 data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
1344 dme1737_read(data,
1345 DME1737_REG_PWM_RR(0)));
1346 }
1347 dme1737_write(data, DME1737_REG_PWM_RR(0),
1348 data->pwm_rr[0]);
1349 break;
1350 case SYS_PWM_AUTO_POINT1_PWM:
1351 /* Only valid for pwm[1-3] */
1352 data->pwm_min[ix] = SENSORS_LIMIT(val, 0, 255);
1353 dme1737_write(data, DME1737_REG_PWM_MIN(ix),
1354 data->pwm_min[ix]);
1355 break;
1356 default:
1357 dev_dbg(dev, "Unknown function %d.\n", fn);
1358 }
1359 exit:
1360 mutex_unlock(&data->update_lock);
1361
1362 return count;
1363 }
1364
1365 /* ---------------------------------------------------------------------
1366 * Miscellaneous sysfs attributes
1367 * --------------------------------------------------------------------- */
1368
1369 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
1370 char *buf)
1371 {
1372 struct i2c_client *client = to_i2c_client(dev);
1373 struct dme1737_data *data = i2c_get_clientdata(client);
1374
1375 return sprintf(buf, "%d\n", data->vrm);
1376 }
1377
1378 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
1379 const char *buf, size_t count)
1380 {
1381 struct dme1737_data *data = dev_get_drvdata(dev);
1382 long val = simple_strtol(buf, NULL, 10);
1383
1384 data->vrm = val;
1385 return count;
1386 }
1387
1388 static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
1389 char *buf)
1390 {
1391 struct dme1737_data *data = dme1737_update_device(dev);
1392
1393 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1394 }
1395
1396 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1397 char *buf)
1398 {
1399 struct dme1737_data *data = dev_get_drvdata(dev);
1400
1401 return sprintf(buf, "%s\n", data->name);
1402 }
1403
1404 /* ---------------------------------------------------------------------
1405 * Sysfs device attribute defines and structs
1406 * --------------------------------------------------------------------- */
1407
1408 /* Voltages 0-6 */
1409
1410 #define SENSOR_DEVICE_ATTR_IN(ix) \
1411 static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
1412 show_in, NULL, SYS_IN_INPUT, ix); \
1413 static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
1414 show_in, set_in, SYS_IN_MIN, ix); \
1415 static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
1416 show_in, set_in, SYS_IN_MAX, ix); \
1417 static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
1418 show_in, NULL, SYS_IN_ALARM, ix)
1419
1420 SENSOR_DEVICE_ATTR_IN(0);
1421 SENSOR_DEVICE_ATTR_IN(1);
1422 SENSOR_DEVICE_ATTR_IN(2);
1423 SENSOR_DEVICE_ATTR_IN(3);
1424 SENSOR_DEVICE_ATTR_IN(4);
1425 SENSOR_DEVICE_ATTR_IN(5);
1426 SENSOR_DEVICE_ATTR_IN(6);
1427
1428 /* Temperatures 1-3 */
1429
1430 #define SENSOR_DEVICE_ATTR_TEMP(ix) \
1431 static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
1432 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
1433 static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
1434 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
1435 static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
1436 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
1437 static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
1438 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
1439 static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
1440 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
1441 static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
1442 show_temp, NULL, SYS_TEMP_FAULT, ix-1)
1443
1444 SENSOR_DEVICE_ATTR_TEMP(1);
1445 SENSOR_DEVICE_ATTR_TEMP(2);
1446 SENSOR_DEVICE_ATTR_TEMP(3);
1447
1448 /* Zones 1-3 */
1449
1450 #define SENSOR_DEVICE_ATTR_ZONE(ix) \
1451 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
1452 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
1453 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
1454 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
1455 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
1456 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
1457 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
1458 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
1459 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
1460 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
1461
1462 SENSOR_DEVICE_ATTR_ZONE(1);
1463 SENSOR_DEVICE_ATTR_ZONE(2);
1464 SENSOR_DEVICE_ATTR_ZONE(3);
1465
1466 /* Fans 1-4 */
1467
1468 #define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
1469 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1470 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1471 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1472 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1473 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1474 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1475 static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
1476 show_fan, set_fan, SYS_FAN_TYPE, ix-1)
1477
1478 SENSOR_DEVICE_ATTR_FAN_1TO4(1);
1479 SENSOR_DEVICE_ATTR_FAN_1TO4(2);
1480 SENSOR_DEVICE_ATTR_FAN_1TO4(3);
1481 SENSOR_DEVICE_ATTR_FAN_1TO4(4);
1482
1483 /* Fans 5-6 */
1484
1485 #define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
1486 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1487 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1488 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1489 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1490 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1491 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1492 static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
1493 show_fan, set_fan, SYS_FAN_MAX, ix-1)
1494
1495 SENSOR_DEVICE_ATTR_FAN_5TO6(5);
1496 SENSOR_DEVICE_ATTR_FAN_5TO6(6);
1497
1498 /* PWMs 1-3 */
1499
1500 #define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
1501 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1502 show_pwm, set_pwm, SYS_PWM, ix-1); \
1503 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1504 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1505 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1506 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
1507 static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
1508 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
1509 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
1510 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
1511 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
1512 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
1513 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
1514 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
1515 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
1516 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
1517
1518 SENSOR_DEVICE_ATTR_PWM_1TO3(1);
1519 SENSOR_DEVICE_ATTR_PWM_1TO3(2);
1520 SENSOR_DEVICE_ATTR_PWM_1TO3(3);
1521
1522 /* PWMs 5-6 */
1523
1524 #define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
1525 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1526 show_pwm, set_pwm, SYS_PWM, ix-1); \
1527 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1528 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1529 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1530 show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
1531
1532 SENSOR_DEVICE_ATTR_PWM_5TO6(5);
1533 SENSOR_DEVICE_ATTR_PWM_5TO6(6);
1534
1535 /* Misc */
1536
1537 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
1538 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1539 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */
1540
1541 /* This struct holds all the attributes that are always present and need to be
1542 * created unconditionally. The attributes that need modification of their
1543 * permissions are created read-only and write permissions are added or removed
1544 * on the fly when required */
1545 static struct attribute *dme1737_attr[] ={
1546 /* Voltages */
1547 &sensor_dev_attr_in0_input.dev_attr.attr,
1548 &sensor_dev_attr_in0_min.dev_attr.attr,
1549 &sensor_dev_attr_in0_max.dev_attr.attr,
1550 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1551 &sensor_dev_attr_in1_input.dev_attr.attr,
1552 &sensor_dev_attr_in1_min.dev_attr.attr,
1553 &sensor_dev_attr_in1_max.dev_attr.attr,
1554 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1555 &sensor_dev_attr_in2_input.dev_attr.attr,
1556 &sensor_dev_attr_in2_min.dev_attr.attr,
1557 &sensor_dev_attr_in2_max.dev_attr.attr,
1558 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1559 &sensor_dev_attr_in3_input.dev_attr.attr,
1560 &sensor_dev_attr_in3_min.dev_attr.attr,
1561 &sensor_dev_attr_in3_max.dev_attr.attr,
1562 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1563 &sensor_dev_attr_in4_input.dev_attr.attr,
1564 &sensor_dev_attr_in4_min.dev_attr.attr,
1565 &sensor_dev_attr_in4_max.dev_attr.attr,
1566 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1567 &sensor_dev_attr_in5_input.dev_attr.attr,
1568 &sensor_dev_attr_in5_min.dev_attr.attr,
1569 &sensor_dev_attr_in5_max.dev_attr.attr,
1570 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1571 &sensor_dev_attr_in6_input.dev_attr.attr,
1572 &sensor_dev_attr_in6_min.dev_attr.attr,
1573 &sensor_dev_attr_in6_max.dev_attr.attr,
1574 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1575 /* Temperatures */
1576 &sensor_dev_attr_temp1_input.dev_attr.attr,
1577 &sensor_dev_attr_temp1_min.dev_attr.attr,
1578 &sensor_dev_attr_temp1_max.dev_attr.attr,
1579 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1580 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1581 &sensor_dev_attr_temp2_input.dev_attr.attr,
1582 &sensor_dev_attr_temp2_min.dev_attr.attr,
1583 &sensor_dev_attr_temp2_max.dev_attr.attr,
1584 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1585 &sensor_dev_attr_temp2_fault.dev_attr.attr,
1586 &sensor_dev_attr_temp3_input.dev_attr.attr,
1587 &sensor_dev_attr_temp3_min.dev_attr.attr,
1588 &sensor_dev_attr_temp3_max.dev_attr.attr,
1589 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1590 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1591 /* Zones */
1592 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1593 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1594 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1595 &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr,
1596 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1597 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1598 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1599 &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
1600 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1601 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1602 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1603 &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
1604 NULL
1605 };
1606
1607 static const struct attribute_group dme1737_group = {
1608 .attrs = dme1737_attr,
1609 };
1610
1611 /* The following struct holds misc attributes, which are not available in all
1612 * chips. Their creation depends on the chip type which is determined during
1613 * module load. */
1614 static struct attribute *dme1737_misc_attr[] = {
1615 /* Temperatures */
1616 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1617 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1618 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1619 /* Zones */
1620 &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
1621 &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
1622 &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
1623 /* Misc */
1624 &dev_attr_vrm.attr,
1625 &dev_attr_cpu0_vid.attr,
1626 NULL
1627 };
1628
1629 static const struct attribute_group dme1737_misc_group = {
1630 .attrs = dme1737_misc_attr,
1631 };
1632
1633 /* The following structs hold the PWM attributes, some of which are optional.
1634 * Their creation depends on the chip configuration which is determined during
1635 * module load. */
1636 static struct attribute *dme1737_pwm1_attr[] = {
1637 &sensor_dev_attr_pwm1.dev_attr.attr,
1638 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1639 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1640 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1641 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1642 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1643 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1644 NULL
1645 };
1646 static struct attribute *dme1737_pwm2_attr[] = {
1647 &sensor_dev_attr_pwm2.dev_attr.attr,
1648 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1649 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1650 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1651 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1652 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1653 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1654 NULL
1655 };
1656 static struct attribute *dme1737_pwm3_attr[] = {
1657 &sensor_dev_attr_pwm3.dev_attr.attr,
1658 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1659 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1660 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1661 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1662 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1663 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1664 NULL
1665 };
1666 static struct attribute *dme1737_pwm5_attr[] = {
1667 &sensor_dev_attr_pwm5.dev_attr.attr,
1668 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1669 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
1670 NULL
1671 };
1672 static struct attribute *dme1737_pwm6_attr[] = {
1673 &sensor_dev_attr_pwm6.dev_attr.attr,
1674 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1675 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
1676 NULL
1677 };
1678
1679 static const struct attribute_group dme1737_pwm_group[] = {
1680 { .attrs = dme1737_pwm1_attr },
1681 { .attrs = dme1737_pwm2_attr },
1682 { .attrs = dme1737_pwm3_attr },
1683 { .attrs = NULL },
1684 { .attrs = dme1737_pwm5_attr },
1685 { .attrs = dme1737_pwm6_attr },
1686 };
1687
1688 /* The following struct holds misc PWM attributes, which are not available in
1689 * all chips. Their creation depends on the chip type which is determined
1690 * during module load. */
1691 static struct attribute *dme1737_pwm_misc_attr[] = {
1692 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1693 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1694 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1695 };
1696
1697 /* The following structs hold the fan attributes, some of which are optional.
1698 * Their creation depends on the chip configuration which is determined during
1699 * module load. */
1700 static struct attribute *dme1737_fan1_attr[] = {
1701 &sensor_dev_attr_fan1_input.dev_attr.attr,
1702 &sensor_dev_attr_fan1_min.dev_attr.attr,
1703 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1704 &sensor_dev_attr_fan1_type.dev_attr.attr,
1705 NULL
1706 };
1707 static struct attribute *dme1737_fan2_attr[] = {
1708 &sensor_dev_attr_fan2_input.dev_attr.attr,
1709 &sensor_dev_attr_fan2_min.dev_attr.attr,
1710 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1711 &sensor_dev_attr_fan2_type.dev_attr.attr,
1712 NULL
1713 };
1714 static struct attribute *dme1737_fan3_attr[] = {
1715 &sensor_dev_attr_fan3_input.dev_attr.attr,
1716 &sensor_dev_attr_fan3_min.dev_attr.attr,
1717 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1718 &sensor_dev_attr_fan3_type.dev_attr.attr,
1719 NULL
1720 };
1721 static struct attribute *dme1737_fan4_attr[] = {
1722 &sensor_dev_attr_fan4_input.dev_attr.attr,
1723 &sensor_dev_attr_fan4_min.dev_attr.attr,
1724 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1725 &sensor_dev_attr_fan4_type.dev_attr.attr,
1726 NULL
1727 };
1728 static struct attribute *dme1737_fan5_attr[] = {
1729 &sensor_dev_attr_fan5_input.dev_attr.attr,
1730 &sensor_dev_attr_fan5_min.dev_attr.attr,
1731 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1732 &sensor_dev_attr_fan5_max.dev_attr.attr,
1733 NULL
1734 };
1735 static struct attribute *dme1737_fan6_attr[] = {
1736 &sensor_dev_attr_fan6_input.dev_attr.attr,
1737 &sensor_dev_attr_fan6_min.dev_attr.attr,
1738 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1739 &sensor_dev_attr_fan6_max.dev_attr.attr,
1740 NULL
1741 };
1742
1743 static const struct attribute_group dme1737_fan_group[] = {
1744 { .attrs = dme1737_fan1_attr },
1745 { .attrs = dme1737_fan2_attr },
1746 { .attrs = dme1737_fan3_attr },
1747 { .attrs = dme1737_fan4_attr },
1748 { .attrs = dme1737_fan5_attr },
1749 { .attrs = dme1737_fan6_attr },
1750 };
1751
1752 /* The permissions of the following zone attributes are changed to read-
1753 * writeable if the chip is *not* locked. Otherwise they stay read-only. */
1754 static struct attribute *dme1737_zone_chmod_attr[] = {
1755 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1756 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1757 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1758 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1759 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1760 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1761 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1762 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1763 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1764 NULL
1765 };
1766
1767 static const struct attribute_group dme1737_zone_chmod_group = {
1768 .attrs = dme1737_zone_chmod_attr,
1769 };
1770
1771 /* The permissions of the following PWM attributes are changed to read-
1772 * writeable if the chip is *not* locked and the respective PWM is available.
1773 * Otherwise they stay read-only. */
1774 static struct attribute *dme1737_pwm1_chmod_attr[] = {
1775 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1776 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1777 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1778 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1779 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1780 NULL
1781 };
1782 static struct attribute *dme1737_pwm2_chmod_attr[] = {
1783 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1784 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1785 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1786 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1787 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1788 NULL
1789 };
1790 static struct attribute *dme1737_pwm3_chmod_attr[] = {
1791 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1792 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1793 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1794 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1795 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1796 NULL
1797 };
1798 static struct attribute *dme1737_pwm5_chmod_attr[] = {
1799 &sensor_dev_attr_pwm5.dev_attr.attr,
1800 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1801 NULL
1802 };
1803 static struct attribute *dme1737_pwm6_chmod_attr[] = {
1804 &sensor_dev_attr_pwm6.dev_attr.attr,
1805 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1806 NULL
1807 };
1808
1809 static const struct attribute_group dme1737_pwm_chmod_group[] = {
1810 { .attrs = dme1737_pwm1_chmod_attr },
1811 { .attrs = dme1737_pwm2_chmod_attr },
1812 { .attrs = dme1737_pwm3_chmod_attr },
1813 { .attrs = NULL },
1814 { .attrs = dme1737_pwm5_chmod_attr },
1815 { .attrs = dme1737_pwm6_chmod_attr },
1816 };
1817
1818 /* Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
1819 * chip is not locked. Otherwise they are read-only. */
1820 static struct attribute *dme1737_pwm_chmod_attr[] = {
1821 &sensor_dev_attr_pwm1.dev_attr.attr,
1822 &sensor_dev_attr_pwm2.dev_attr.attr,
1823 &sensor_dev_attr_pwm3.dev_attr.attr,
1824 };
1825
1826 /* ---------------------------------------------------------------------
1827 * Super-IO functions
1828 * --------------------------------------------------------------------- */
1829
1830 static inline void dme1737_sio_enter(int sio_cip)
1831 {
1832 outb(0x55, sio_cip);
1833 }
1834
1835 static inline void dme1737_sio_exit(int sio_cip)
1836 {
1837 outb(0xaa, sio_cip);
1838 }
1839
1840 static inline int dme1737_sio_inb(int sio_cip, int reg)
1841 {
1842 outb(reg, sio_cip);
1843 return inb(sio_cip + 1);
1844 }
1845
1846 static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
1847 {
1848 outb(reg, sio_cip);
1849 outb(val, sio_cip + 1);
1850 }
1851
1852 /* ---------------------------------------------------------------------
1853 * Device initialization
1854 * --------------------------------------------------------------------- */
1855
1856 static int dme1737_i2c_get_features(int, struct dme1737_data*);
1857
1858 static void dme1737_chmod_file(struct device *dev,
1859 struct attribute *attr, mode_t mode)
1860 {
1861 if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
1862 dev_warn(dev, "Failed to change permissions of %s.\n",
1863 attr->name);
1864 }
1865 }
1866
1867 static void dme1737_chmod_group(struct device *dev,
1868 const struct attribute_group *group,
1869 mode_t mode)
1870 {
1871 struct attribute **attr;
1872
1873 for (attr = group->attrs; *attr; attr++) {
1874 dme1737_chmod_file(dev, *attr, mode);
1875 }
1876 }
1877
1878 static void dme1737_remove_files(struct device *dev)
1879 {
1880 struct dme1737_data *data = dev_get_drvdata(dev);
1881 int ix;
1882
1883 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
1884 if (data->has_fan & (1 << ix)) {
1885 sysfs_remove_group(&dev->kobj,
1886 &dme1737_fan_group[ix]);
1887 }
1888 }
1889
1890 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
1891 if (data->has_pwm & (1 << ix)) {
1892 sysfs_remove_group(&dev->kobj,
1893 &dme1737_pwm_group[ix]);
1894 if (data->type != sch5027 && ix < 3) {
1895 sysfs_remove_file(&dev->kobj,
1896 dme1737_pwm_misc_attr[ix]);
1897 }
1898 }
1899 }
1900
1901 if (data->type != sch5027) {
1902 sysfs_remove_group(&dev->kobj, &dme1737_misc_group);
1903 }
1904
1905 sysfs_remove_group(&dev->kobj, &dme1737_group);
1906
1907 if (!data->client) {
1908 sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
1909 }
1910 }
1911
1912 static int dme1737_create_files(struct device *dev)
1913 {
1914 struct dme1737_data *data = dev_get_drvdata(dev);
1915 int err, ix;
1916
1917 /* Create a name attribute for ISA devices */
1918 if (!data->client &&
1919 (err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr))) {
1920 goto exit;
1921 }
1922
1923 /* Create standard sysfs attributes */
1924 if ((err = sysfs_create_group(&dev->kobj, &dme1737_group))) {
1925 goto exit_remove;
1926 }
1927
1928 /* Create misc sysfs attributes */
1929 if ((data->type != sch5027) &&
1930 (err = sysfs_create_group(&dev->kobj,
1931 &dme1737_misc_group))) {
1932 goto exit_remove;
1933 }
1934
1935 /* Create fan sysfs attributes */
1936 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
1937 if (data->has_fan & (1 << ix)) {
1938 if ((err = sysfs_create_group(&dev->kobj,
1939 &dme1737_fan_group[ix]))) {
1940 goto exit_remove;
1941 }
1942 }
1943 }
1944
1945 /* Create PWM sysfs attributes */
1946 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
1947 if (data->has_pwm & (1 << ix)) {
1948 if ((err = sysfs_create_group(&dev->kobj,
1949 &dme1737_pwm_group[ix]))) {
1950 goto exit_remove;
1951 }
1952 if (data->type != sch5027 && ix < 3 &&
1953 (err = sysfs_create_file(&dev->kobj,
1954 dme1737_pwm_misc_attr[ix]))) {
1955 goto exit_remove;
1956 }
1957 }
1958 }
1959
1960 /* Inform if the device is locked. Otherwise change the permissions of
1961 * selected attributes from read-only to read-writeable. */
1962 if (data->config & 0x02) {
1963 dev_info(dev, "Device is locked. Some attributes "
1964 "will be read-only.\n");
1965 } else {
1966 /* Change permissions of zone sysfs attributes */
1967 dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
1968 S_IRUGO | S_IWUSR);
1969
1970 /* Change permissions of misc sysfs attributes */
1971 if (data->type != sch5027) {
1972 dme1737_chmod_group(dev, &dme1737_misc_group,
1973 S_IRUGO | S_IWUSR);
1974 }
1975
1976 /* Change permissions of PWM sysfs attributes */
1977 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
1978 if (data->has_pwm & (1 << ix)) {
1979 dme1737_chmod_group(dev,
1980 &dme1737_pwm_chmod_group[ix],
1981 S_IRUGO | S_IWUSR);
1982 if (data->type != sch5027 && ix < 3) {
1983 dme1737_chmod_file(dev,
1984 dme1737_pwm_misc_attr[ix],
1985 S_IRUGO | S_IWUSR);
1986 }
1987 }
1988 }
1989
1990 /* Change permissions of pwm[1-3] if in manual mode */
1991 for (ix = 0; ix < 3; ix++) {
1992 if ((data->has_pwm & (1 << ix)) &&
1993 (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
1994 dme1737_chmod_file(dev,
1995 dme1737_pwm_chmod_attr[ix],
1996 S_IRUGO | S_IWUSR);
1997 }
1998 }
1999 }
2000
2001 return 0;
2002
2003 exit_remove:
2004 dme1737_remove_files(dev);
2005 exit:
2006 return err;
2007 }
2008
2009 static int dme1737_init_device(struct device *dev)
2010 {
2011 struct dme1737_data *data = dev_get_drvdata(dev);
2012 struct i2c_client *client = data->client;
2013 int ix;
2014 u8 reg;
2015
2016 /* Point to the right nominal voltages array */
2017 data->in_nominal = IN_NOMINAL(data->type);
2018
2019 data->config = dme1737_read(data, DME1737_REG_CONFIG);
2020 /* Inform if part is not monitoring/started */
2021 if (!(data->config & 0x01)) {
2022 if (!force_start) {
2023 dev_err(dev, "Device is not monitoring. "
2024 "Use the force_start load parameter to "
2025 "override.\n");
2026 return -EFAULT;
2027 }
2028
2029 /* Force monitoring */
2030 data->config |= 0x01;
2031 dme1737_write(data, DME1737_REG_CONFIG, data->config);
2032 }
2033 /* Inform if part is not ready */
2034 if (!(data->config & 0x04)) {
2035 dev_err(dev, "Device is not ready.\n");
2036 return -EFAULT;
2037 }
2038
2039 /* Determine which optional fan and pwm features are enabled/present */
2040 if (client) { /* I2C chip */
2041 data->config2 = dme1737_read(data, DME1737_REG_CONFIG2);
2042 /* Check if optional fan3 input is enabled */
2043 if (data->config2 & 0x04) {
2044 data->has_fan |= (1 << 2);
2045 }
2046
2047 /* Fan4 and pwm3 are only available if the client's I2C address
2048 * is the default 0x2e. Otherwise the I/Os associated with
2049 * these functions are used for addr enable/select. */
2050 if (client->addr == 0x2e) {
2051 data->has_fan |= (1 << 3);
2052 data->has_pwm |= (1 << 2);
2053 }
2054
2055 /* Determine which of the optional fan[5-6] and pwm[5-6]
2056 * features are enabled. For this, we need to query the runtime
2057 * registers through the Super-IO LPC interface. Try both
2058 * config ports 0x2e and 0x4e. */
2059 if (dme1737_i2c_get_features(0x2e, data) &&
2060 dme1737_i2c_get_features(0x4e, data)) {
2061 dev_warn(dev, "Failed to query Super-IO for optional "
2062 "features.\n");
2063 }
2064 } else { /* ISA chip */
2065 /* Fan3 and pwm3 are always available. Fan[4-5] and pwm[5-6]
2066 * don't exist in the ISA chip. */
2067 data->has_fan |= (1 << 2);
2068 data->has_pwm |= (1 << 2);
2069 }
2070
2071 /* Fan1, fan2, pwm1, and pwm2 are always present */
2072 data->has_fan |= 0x03;
2073 data->has_pwm |= 0x03;
2074
2075 dev_info(dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, "
2076 "fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
2077 (data->has_pwm & (1 << 2)) ? "yes" : "no",
2078 (data->has_pwm & (1 << 4)) ? "yes" : "no",
2079 (data->has_pwm & (1 << 5)) ? "yes" : "no",
2080 (data->has_fan & (1 << 2)) ? "yes" : "no",
2081 (data->has_fan & (1 << 3)) ? "yes" : "no",
2082 (data->has_fan & (1 << 4)) ? "yes" : "no",
2083 (data->has_fan & (1 << 5)) ? "yes" : "no");
2084
2085 reg = dme1737_read(data, DME1737_REG_TACH_PWM);
2086 /* Inform if fan-to-pwm mapping differs from the default */
2087 if (client && reg != 0xa4) { /* I2C chip */
2088 dev_warn(dev, "Non-standard fan to pwm mapping: "
2089 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, "
2090 "fan4->pwm%d. Please report to the driver "
2091 "maintainer.\n",
2092 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2093 ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1);
2094 } else if (!client && reg != 0x24) { /* ISA chip */
2095 dev_warn(dev, "Non-standard fan to pwm mapping: "
2096 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. "
2097 "Please report to the driver maintainer.\n",
2098 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2099 ((reg >> 4) & 0x03) + 1);
2100 }
2101
2102 /* Switch pwm[1-3] to manual mode if they are currently disabled and
2103 * set the duty-cycles to 0% (which is identical to the PWMs being
2104 * disabled). */
2105 if (!(data->config & 0x02)) {
2106 for (ix = 0; ix < 3; ix++) {
2107 data->pwm_config[ix] = dme1737_read(data,
2108 DME1737_REG_PWM_CONFIG(ix));
2109 if ((data->has_pwm & (1 << ix)) &&
2110 (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
2111 dev_info(dev, "Switching pwm%d to "
2112 "manual mode.\n", ix + 1);
2113 data->pwm_config[ix] = PWM_EN_TO_REG(1,
2114 data->pwm_config[ix]);
2115 dme1737_write(data, DME1737_REG_PWM(ix), 0);
2116 dme1737_write(data,
2117 DME1737_REG_PWM_CONFIG(ix),
2118 data->pwm_config[ix]);
2119 }
2120 }
2121 }
2122
2123 /* Initialize the default PWM auto channels zone (acz) assignments */
2124 data->pwm_acz[0] = 1; /* pwm1 -> zone1 */
2125 data->pwm_acz[1] = 2; /* pwm2 -> zone2 */
2126 data->pwm_acz[2] = 4; /* pwm3 -> zone3 */
2127
2128 /* Set VRM */
2129 if (data->type != sch5027) {
2130 data->vrm = vid_which_vrm();
2131 }
2132
2133 return 0;
2134 }
2135
2136 /* ---------------------------------------------------------------------
2137 * I2C device detection and registration
2138 * --------------------------------------------------------------------- */
2139
2140 static struct i2c_driver dme1737_i2c_driver;
2141
2142 static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
2143 {
2144 int err = 0, reg;
2145 u16 addr;
2146
2147 dme1737_sio_enter(sio_cip);
2148
2149 /* Check device ID
2150 * The DME1737 can return either 0x78 or 0x77 as its device ID.
2151 * The SCH5027 returns 0x89 as its device ID. */
2152 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2153 if (!(reg == 0x77 || reg == 0x78 || reg == 0x89)) {
2154 err = -ENODEV;
2155 goto exit;
2156 }
2157
2158 /* Select logical device A (runtime registers) */
2159 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2160
2161 /* Get the base address of the runtime registers */
2162 if (!(addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2163 dme1737_sio_inb(sio_cip, 0x61))) {
2164 err = -ENODEV;
2165 goto exit;
2166 }
2167
2168 /* Read the runtime registers to determine which optional features
2169 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
2170 * to '10' if the respective feature is enabled. */
2171 if ((inb(addr + 0x43) & 0x0c) == 0x08) { /* fan6 */
2172 data->has_fan |= (1 << 5);
2173 }
2174 if ((inb(addr + 0x44) & 0x0c) == 0x08) { /* pwm6 */
2175 data->has_pwm |= (1 << 5);
2176 }
2177 if ((inb(addr + 0x45) & 0x0c) == 0x08) { /* fan5 */
2178 data->has_fan |= (1 << 4);
2179 }
2180 if ((inb(addr + 0x46) & 0x0c) == 0x08) { /* pwm5 */
2181 data->has_pwm |= (1 << 4);
2182 }
2183
2184 exit:
2185 dme1737_sio_exit(sio_cip);
2186
2187 return err;
2188 }
2189
2190 /* Return 0 if detection is successful, -ENODEV otherwise */
2191 static int dme1737_i2c_detect(struct i2c_client *client, int kind,
2192 struct i2c_board_info *info)
2193 {
2194 struct i2c_adapter *adapter = client->adapter;
2195 struct device *dev = &adapter->dev;
2196 u8 company, verstep = 0;
2197 const char *name;
2198
2199 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
2200 return -ENODEV;
2201 }
2202
2203 /* A negative kind means that the driver was loaded with no force
2204 * parameter (default), so we must identify the chip. */
2205 if (kind < 0) {
2206 company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY);
2207 verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP);
2208
2209 if (company == DME1737_COMPANY_SMSC &&
2210 (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
2211 kind = dme1737;
2212 } else if (company == DME1737_COMPANY_SMSC &&
2213 verstep == SCH5027_VERSTEP) {
2214 kind = sch5027;
2215 } else {
2216 return -ENODEV;
2217 }
2218 }
2219
2220 if (kind == sch5027) {
2221 name = "sch5027";
2222 } else {
2223 kind = dme1737;
2224 name = "dme1737";
2225 }
2226
2227 dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n",
2228 kind == sch5027 ? "SCH5027" : "DME1737", client->addr,
2229 verstep);
2230 strlcpy(info->type, name, I2C_NAME_SIZE);
2231
2232 return 0;
2233 }
2234
2235 static int dme1737_i2c_probe(struct i2c_client *client,
2236 const struct i2c_device_id *id)
2237 {
2238 struct dme1737_data *data;
2239 struct device *dev = &client->dev;
2240 int err;
2241
2242 data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
2243 if (!data) {
2244 err = -ENOMEM;
2245 goto exit;
2246 }
2247
2248 i2c_set_clientdata(client, data);
2249 data->type = id->driver_data;
2250 data->client = client;
2251 data->name = client->name;
2252 mutex_init(&data->update_lock);
2253
2254 /* Initialize the DME1737 chip */
2255 if ((err = dme1737_init_device(dev))) {
2256 dev_err(dev, "Failed to initialize device.\n");
2257 goto exit_kfree;
2258 }
2259
2260 /* Create sysfs files */
2261 if ((err = dme1737_create_files(dev))) {
2262 dev_err(dev, "Failed to create sysfs files.\n");
2263 goto exit_kfree;
2264 }
2265
2266 /* Register device */
2267 data->hwmon_dev = hwmon_device_register(dev);
2268 if (IS_ERR(data->hwmon_dev)) {
2269 dev_err(dev, "Failed to register device.\n");
2270 err = PTR_ERR(data->hwmon_dev);
2271 goto exit_remove;
2272 }
2273
2274 return 0;
2275
2276 exit_remove:
2277 dme1737_remove_files(dev);
2278 exit_kfree:
2279 kfree(data);
2280 exit:
2281 return err;
2282 }
2283
2284 static int dme1737_i2c_remove(struct i2c_client *client)
2285 {
2286 struct dme1737_data *data = i2c_get_clientdata(client);
2287
2288 hwmon_device_unregister(data->hwmon_dev);
2289 dme1737_remove_files(&client->dev);
2290
2291 kfree(data);
2292 return 0;
2293 }
2294
2295 static const struct i2c_device_id dme1737_id[] = {
2296 { "dme1737", dme1737 },
2297 { "sch5027", sch5027 },
2298 { }
2299 };
2300 MODULE_DEVICE_TABLE(i2c, dme1737_id);
2301
2302 static struct i2c_driver dme1737_i2c_driver = {
2303 .class = I2C_CLASS_HWMON,
2304 .driver = {
2305 .name = "dme1737",
2306 },
2307 .probe = dme1737_i2c_probe,
2308 .remove = dme1737_i2c_remove,
2309 .id_table = dme1737_id,
2310 .detect = dme1737_i2c_detect,
2311 .address_data = &addr_data,
2312 };
2313
2314 /* ---------------------------------------------------------------------
2315 * ISA device detection and registration
2316 * --------------------------------------------------------------------- */
2317
2318 static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
2319 {
2320 int err = 0, reg;
2321 unsigned short base_addr;
2322
2323 dme1737_sio_enter(sio_cip);
2324
2325 /* Check device ID
2326 * We currently know about SCH3112 (0x7c), SCH3114 (0x7d), and
2327 * SCH3116 (0x7f). */
2328 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2329 if (!(reg == 0x7c || reg == 0x7d || reg == 0x7f)) {
2330 err = -ENODEV;
2331 goto exit;
2332 }
2333
2334 /* Select logical device A (runtime registers) */
2335 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2336
2337 /* Get the base address of the runtime registers */
2338 if (!(base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2339 dme1737_sio_inb(sio_cip, 0x61))) {
2340 printk(KERN_ERR "dme1737: Base address not set.\n");
2341 err = -ENODEV;
2342 goto exit;
2343 }
2344
2345 /* Access to the hwmon registers is through an index/data register
2346 * pair located at offset 0x70/0x71. */
2347 *addr = base_addr + 0x70;
2348
2349 exit:
2350 dme1737_sio_exit(sio_cip);
2351 return err;
2352 }
2353
2354 static int __init dme1737_isa_device_add(unsigned short addr)
2355 {
2356 struct resource res = {
2357 .start = addr,
2358 .end = addr + DME1737_EXTENT - 1,
2359 .name = "dme1737",
2360 .flags = IORESOURCE_IO,
2361 };
2362 int err;
2363
2364 if (!(pdev = platform_device_alloc("dme1737", addr))) {
2365 printk(KERN_ERR "dme1737: Failed to allocate device.\n");
2366 err = -ENOMEM;
2367 goto exit;
2368 }
2369
2370 if ((err = platform_device_add_resources(pdev, &res, 1))) {
2371 printk(KERN_ERR "dme1737: Failed to add device resource "
2372 "(err = %d).\n", err);
2373 goto exit_device_put;
2374 }
2375
2376 if ((err = platform_device_add(pdev))) {
2377 printk(KERN_ERR "dme1737: Failed to add device (err = %d).\n",
2378 err);
2379 goto exit_device_put;
2380 }
2381
2382 return 0;
2383
2384 exit_device_put:
2385 platform_device_put(pdev);
2386 pdev = NULL;
2387 exit:
2388 return err;
2389 }
2390
2391 static int __devinit dme1737_isa_probe(struct platform_device *pdev)
2392 {
2393 u8 company, device;
2394 struct resource *res;
2395 struct dme1737_data *data;
2396 struct device *dev = &pdev->dev;
2397 int err;
2398
2399 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2400 if (!request_region(res->start, DME1737_EXTENT, "dme1737")) {
2401 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
2402 (unsigned short)res->start,
2403 (unsigned short)res->start + DME1737_EXTENT - 1);
2404 err = -EBUSY;
2405 goto exit;
2406 }
2407
2408 if (!(data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL))) {
2409 err = -ENOMEM;
2410 goto exit_release_region;
2411 }
2412
2413 data->addr = res->start;
2414 platform_set_drvdata(pdev, data);
2415
2416 /* Skip chip detection if module is loaded with force_id parameter */
2417 if (!force_id) {
2418 company = dme1737_read(data, DME1737_REG_COMPANY);
2419 device = dme1737_read(data, DME1737_REG_DEVICE);
2420
2421 if (!((company == DME1737_COMPANY_SMSC) &&
2422 (device == SCH311X_DEVICE))) {
2423 err = -ENODEV;
2424 goto exit_kfree;
2425 }
2426 }
2427 data->type = sch311x;
2428
2429 /* Fill in the remaining client fields and initialize the mutex */
2430 data->name = "sch311x";
2431 mutex_init(&data->update_lock);
2432
2433 dev_info(dev, "Found a SCH311x chip at 0x%04x\n", data->addr);
2434
2435 /* Initialize the chip */
2436 if ((err = dme1737_init_device(dev))) {
2437 dev_err(dev, "Failed to initialize device.\n");
2438 goto exit_kfree;
2439 }
2440
2441 /* Create sysfs files */
2442 if ((err = dme1737_create_files(dev))) {
2443 dev_err(dev, "Failed to create sysfs files.\n");
2444 goto exit_kfree;
2445 }
2446
2447 /* Register device */
2448 data->hwmon_dev = hwmon_device_register(dev);
2449 if (IS_ERR(data->hwmon_dev)) {
2450 dev_err(dev, "Failed to register device.\n");
2451 err = PTR_ERR(data->hwmon_dev);
2452 goto exit_remove_files;
2453 }
2454
2455 return 0;
2456
2457 exit_remove_files:
2458 dme1737_remove_files(dev);
2459 exit_kfree:
2460 platform_set_drvdata(pdev, NULL);
2461 kfree(data);
2462 exit_release_region:
2463 release_region(res->start, DME1737_EXTENT);
2464 exit:
2465 return err;
2466 }
2467
2468 static int __devexit dme1737_isa_remove(struct platform_device *pdev)
2469 {
2470 struct dme1737_data *data = platform_get_drvdata(pdev);
2471
2472 hwmon_device_unregister(data->hwmon_dev);
2473 dme1737_remove_files(&pdev->dev);
2474 release_region(data->addr, DME1737_EXTENT);
2475 platform_set_drvdata(pdev, NULL);
2476 kfree(data);
2477
2478 return 0;
2479 }
2480
2481 static struct platform_driver dme1737_isa_driver = {
2482 .driver = {
2483 .owner = THIS_MODULE,
2484 .name = "dme1737",
2485 },
2486 .probe = dme1737_isa_probe,
2487 .remove = __devexit_p(dme1737_isa_remove),
2488 };
2489
2490 /* ---------------------------------------------------------------------
2491 * Module initialization and cleanup
2492 * --------------------------------------------------------------------- */
2493
2494 static int __init dme1737_init(void)
2495 {
2496 int err;
2497 unsigned short addr;
2498
2499 if ((err = i2c_add_driver(&dme1737_i2c_driver))) {
2500 goto exit;
2501 }
2502
2503 if (dme1737_isa_detect(0x2e, &addr) &&
2504 dme1737_isa_detect(0x4e, &addr) &&
2505 (!probe_all_addr ||
2506 (dme1737_isa_detect(0x162e, &addr) &&
2507 dme1737_isa_detect(0x164e, &addr)))) {
2508 /* Return 0 if we didn't find an ISA device */
2509 return 0;
2510 }
2511
2512 if ((err = platform_driver_register(&dme1737_isa_driver))) {
2513 goto exit_del_i2c_driver;
2514 }
2515
2516 /* Sets global pdev as a side effect */
2517 if ((err = dme1737_isa_device_add(addr))) {
2518 goto exit_del_isa_driver;
2519 }
2520
2521 return 0;
2522
2523 exit_del_isa_driver:
2524 platform_driver_unregister(&dme1737_isa_driver);
2525 exit_del_i2c_driver:
2526 i2c_del_driver(&dme1737_i2c_driver);
2527 exit:
2528 return err;
2529 }
2530
2531 static void __exit dme1737_exit(void)
2532 {
2533 if (pdev) {
2534 platform_device_unregister(pdev);
2535 platform_driver_unregister(&dme1737_isa_driver);
2536 }
2537
2538 i2c_del_driver(&dme1737_i2c_driver);
2539 }
2540
2541 MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
2542 MODULE_DESCRIPTION("DME1737 sensors");
2543 MODULE_LICENSE("GPL");
2544
2545 module_init(dme1737_init);
2546 module_exit(dme1737_exit);
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