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x86, uv: Ensure hub revision set for all ACPI modes.
[linux-2.6/btrfs-unstable.git] / drivers / hwmon / dme1737.c
blob823dd28a902cf8c33e7d8de2d8a21b9a56f85db1
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 <linux/acpi.h>
38 #include <linux/io.h>
39
40 /* ISA device, if found */
41 static struct platform_device *pdev;
42
43 /* Module load parameters */
44 static int force_start;
45 module_param(force_start, bool, 0);
46 MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs");
47
48 static unsigned short force_id;
49 module_param(force_id, ushort, 0);
50 MODULE_PARM_DESC(force_id, "Override the detected device ID");
51
52 static int probe_all_addr;
53 module_param(probe_all_addr, bool, 0);
54 MODULE_PARM_DESC(probe_all_addr, "Include probing of non-standard LPC "
55 "addresses");
56
57 /* Addresses to scan */
58 static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
59
60 enum chips { dme1737, sch5027, sch311x };
61
62 /* ---------------------------------------------------------------------
63 * Registers
64 *
65 * The sensors are defined as follows:
66 *
67 * Voltages Temperatures
68 * -------- ------------
69 * in0 +5VTR (+5V stdby) temp1 Remote diode 1
70 * in1 Vccp (proc core) temp2 Internal temp
71 * in2 VCC (internal +3.3V) temp3 Remote diode 2
72 * in3 +5V
73 * in4 +12V
74 * in5 VTR (+3.3V stby)
75 * in6 Vbat
76 *
77 * --------------------------------------------------------------------- */
78
79 /* Voltages (in) numbered 0-6 (ix) */
80 #define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) \
81 : 0x94 + (ix))
82 #define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \
83 : 0x91 + (ix) * 2)
84 #define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \
85 : 0x92 + (ix) * 2)
86
87 /* Temperatures (temp) numbered 0-2 (ix) */
88 #define DME1737_REG_TEMP(ix) (0x25 + (ix))
89 #define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2)
90 #define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2)
91 #define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \
92 : 0x1c + (ix))
93
94 /* Voltage and temperature LSBs
95 * The LSBs (4 bits each) are stored in 5 registers with the following layouts:
96 * IN_TEMP_LSB(0) = [in5, in6]
97 * IN_TEMP_LSB(1) = [temp3, temp1]
98 * IN_TEMP_LSB(2) = [in4, temp2]
99 * IN_TEMP_LSB(3) = [in3, in0]
100 * IN_TEMP_LSB(4) = [in2, in1] */
101 #define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix))
102 static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0};
103 static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4};
104 static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
105 static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0};
106
107 /* Fans numbered 0-5 (ix) */
108 #define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \
109 : 0xa1 + (ix) * 2)
110 #define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \
111 : 0xa5 + (ix) * 2)
112 #define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \
113 : 0xb2 + (ix))
114 #define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */
115
116 /* PWMs numbered 0-2, 4-5 (ix) */
117 #define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \
118 : 0xa1 + (ix))
119 #define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */
120 #define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */
121 #define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \
122 : 0xa3 + (ix))
123 /* The layout of the ramp rate registers is different from the other pwm
124 * registers. The bits for the 3 PWMs are stored in 2 registers:
125 * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0]
126 * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0] */
127 #define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */
128
129 /* Thermal zones 0-2 */
130 #define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix))
131 #define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix))
132 /* The layout of the hysteresis registers is different from the other zone
133 * registers. The bits for the 3 zones are stored in 2 registers:
134 * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
135 * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES] */
136 #define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix))
137
138 /* Alarm registers and bit mapping
139 * The 3 8-bit alarm registers will be concatenated to a single 32-bit
140 * alarm value [0, ALARM3, ALARM2, ALARM1]. */
141 #define DME1737_REG_ALARM1 0x41
142 #define DME1737_REG_ALARM2 0x42
143 #define DME1737_REG_ALARM3 0x83
144 static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17};
145 static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
146 static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
147
148 /* Miscellaneous registers */
149 #define DME1737_REG_DEVICE 0x3d
150 #define DME1737_REG_COMPANY 0x3e
151 #define DME1737_REG_VERSTEP 0x3f
152 #define DME1737_REG_CONFIG 0x40
153 #define DME1737_REG_CONFIG2 0x7f
154 #define DME1737_REG_VID 0x43
155 #define DME1737_REG_TACH_PWM 0x81
156
157 /* ---------------------------------------------------------------------
158 * Misc defines
159 * --------------------------------------------------------------------- */
160
161 /* Chip identification */
162 #define DME1737_COMPANY_SMSC 0x5c
163 #define DME1737_VERSTEP 0x88
164 #define DME1737_VERSTEP_MASK 0xf8
165 #define SCH311X_DEVICE 0x8c
166 #define SCH5027_VERSTEP 0x69
167
168 /* Length of ISA address segment */
169 #define DME1737_EXTENT 2
170
171 /* ---------------------------------------------------------------------
172 * Data structures and manipulation thereof
173 * --------------------------------------------------------------------- */
174
175 struct dme1737_data {
176 struct i2c_client *client; /* for I2C devices only */
177 struct device *hwmon_dev;
178 const char *name;
179 unsigned int addr; /* for ISA devices only */
180
181 struct mutex update_lock;
182 int valid; /* !=0 if following fields are valid */
183 unsigned long last_update; /* in jiffies */
184 unsigned long last_vbat; /* in jiffies */
185 enum chips type;
186 const int *in_nominal; /* pointer to IN_NOMINAL array */
187
188 u8 vid;
189 u8 pwm_rr_en;
190 u8 has_pwm;
191 u8 has_fan;
192
193 /* Register values */
194 u16 in[7];
195 u8 in_min[7];
196 u8 in_max[7];
197 s16 temp[3];
198 s8 temp_min[3];
199 s8 temp_max[3];
200 s8 temp_offset[3];
201 u8 config;
202 u8 config2;
203 u8 vrm;
204 u16 fan[6];
205 u16 fan_min[6];
206 u8 fan_max[2];
207 u8 fan_opt[6];
208 u8 pwm[6];
209 u8 pwm_min[3];
210 u8 pwm_config[3];
211 u8 pwm_acz[3];
212 u8 pwm_freq[6];
213 u8 pwm_rr[2];
214 u8 zone_low[3];
215 u8 zone_abs[3];
216 u8 zone_hyst[2];
217 u32 alarms;
218 };
219
220 /* Nominal voltage values */
221 static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
222 3300};
223 static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
224 3300};
225 static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
226 3300};
227 #define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \
228 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \
229 IN_NOMINAL_DME1737)
230
231 /* Voltage input
232 * Voltage inputs have 16 bits resolution, limit values have 8 bits
233 * resolution. */
234 static inline int IN_FROM_REG(int reg, int nominal, int res)
235 {
236 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
237 }
238
239 static inline int IN_TO_REG(int val, int nominal)
240 {
241 return SENSORS_LIMIT((val * 192 + nominal / 2) / nominal, 0, 255);
242 }
243
244 /* Temperature input
245 * The register values represent temperatures in 2's complement notation from
246 * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit
247 * values have 8 bits resolution. */
248 static inline int TEMP_FROM_REG(int reg, int res)
249 {
250 return (reg * 1000) >> (res - 8);
251 }
252
253 static inline int TEMP_TO_REG(int val)
254 {
255 return SENSORS_LIMIT((val < 0 ? val - 500 : val + 500) / 1000,
256 -128, 127);
257 }
258
259 /* Temperature range */
260 static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
261 10000, 13333, 16000, 20000, 26666, 32000,
262 40000, 53333, 80000};
263
264 static inline int TEMP_RANGE_FROM_REG(int reg)
265 {
266 return TEMP_RANGE[(reg >> 4) & 0x0f];
267 }
268
269 static int TEMP_RANGE_TO_REG(int val, int reg)
270 {
271 int i;
272
273 for (i = 15; i > 0; i--) {
274 if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2) {
275 break;
276 }
277 }
278
279 return (reg & 0x0f) | (i << 4);
280 }
281
282 /* Temperature hysteresis
283 * Register layout:
284 * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
285 * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx] */
286 static inline int TEMP_HYST_FROM_REG(int reg, int ix)
287 {
288 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
289 }
290
291 static inline int TEMP_HYST_TO_REG(int val, int ix, int reg)
292 {
293 int hyst = SENSORS_LIMIT((val + 500) / 1000, 0, 15);
294
295 return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4);
296 }
297
298 /* Fan input RPM */
299 static inline int FAN_FROM_REG(int reg, int tpc)
300 {
301 if (tpc) {
302 return tpc * reg;
303 } else {
304 return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg;
305 }
306 }
307
308 static inline int FAN_TO_REG(int val, int tpc)
309 {
310 if (tpc) {
311 return SENSORS_LIMIT(val / tpc, 0, 0xffff);
312 } else {
313 return (val <= 0) ? 0xffff :
314 SENSORS_LIMIT(90000 * 60 / val, 0, 0xfffe);
315 }
316 }
317
318 /* Fan TPC (tach pulse count)
319 * Converts a register value to a TPC multiplier or returns 0 if the tachometer
320 * is configured in legacy (non-tpc) mode */
321 static inline int FAN_TPC_FROM_REG(int reg)
322 {
323 return (reg & 0x20) ? 0 : 60 >> (reg & 0x03);
324 }
325
326 /* Fan type
327 * The type of a fan is expressed in number of pulses-per-revolution that it
328 * emits */
329 static inline int FAN_TYPE_FROM_REG(int reg)
330 {
331 int edge = (reg >> 1) & 0x03;
332
333 return (edge > 0) ? 1 << (edge - 1) : 0;
334 }
335
336 static inline int FAN_TYPE_TO_REG(int val, int reg)
337 {
338 int edge = (val == 4) ? 3 : val;
339
340 return (reg & 0xf9) | (edge << 1);
341 }
342
343 /* Fan max RPM */
344 static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
345 0x11, 0x0f, 0x0e};
346
347 static int FAN_MAX_FROM_REG(int reg)
348 {
349 int i;
350
351 for (i = 10; i > 0; i--) {
352 if (reg == FAN_MAX[i]) {
353 break;
354 }
355 }
356
357 return 1000 + i * 500;
358 }
359
360 static int FAN_MAX_TO_REG(int val)
361 {
362 int i;
363
364 for (i = 10; i > 0; i--) {
365 if (val > (1000 + (i - 1) * 500)) {
366 break;
367 }
368 }
369
370 return FAN_MAX[i];
371 }
372
373 /* PWM enable
374 * Register to enable mapping:
375 * 000: 2 fan on zone 1 auto
376 * 001: 2 fan on zone 2 auto
377 * 010: 2 fan on zone 3 auto
378 * 011: 0 fan full on
379 * 100: -1 fan disabled
380 * 101: 2 fan on hottest of zones 2,3 auto
381 * 110: 2 fan on hottest of zones 1,2,3 auto
382 * 111: 1 fan in manual mode */
383 static inline int PWM_EN_FROM_REG(int reg)
384 {
385 static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1};
386
387 return en[(reg >> 5) & 0x07];
388 }
389
390 static inline int PWM_EN_TO_REG(int val, int reg)
391 {
392 int en = (val == 1) ? 7 : 3;
393
394 return (reg & 0x1f) | ((en & 0x07) << 5);
395 }
396
397 /* PWM auto channels zone
398 * Register to auto channels zone mapping (ACZ is a bitfield with bit x
399 * corresponding to zone x+1):
400 * 000: 001 fan on zone 1 auto
401 * 001: 010 fan on zone 2 auto
402 * 010: 100 fan on zone 3 auto
403 * 011: 000 fan full on
404 * 100: 000 fan disabled
405 * 101: 110 fan on hottest of zones 2,3 auto
406 * 110: 111 fan on hottest of zones 1,2,3 auto
407 * 111: 000 fan in manual mode */
408 static inline int PWM_ACZ_FROM_REG(int reg)
409 {
410 static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0};
411
412 return acz[(reg >> 5) & 0x07];
413 }
414
415 static inline int PWM_ACZ_TO_REG(int val, int reg)
416 {
417 int acz = (val == 4) ? 2 : val - 1;
418
419 return (reg & 0x1f) | ((acz & 0x07) << 5);
420 }
421
422 /* PWM frequency */
423 static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
424 15000, 20000, 30000, 25000, 0, 0, 0, 0};
425
426 static inline int PWM_FREQ_FROM_REG(int reg)
427 {
428 return PWM_FREQ[reg & 0x0f];
429 }
430
431 static int PWM_FREQ_TO_REG(int val, int reg)
432 {
433 int i;
434
435 /* the first two cases are special - stupid chip design! */
436 if (val > 27500) {
437 i = 10;
438 } else if (val > 22500) {
439 i = 11;
440 } else {
441 for (i = 9; i > 0; i--) {
442 if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2) {
443 break;
444 }
445 }
446 }
447
448 return (reg & 0xf0) | i;
449 }
450
451 /* PWM ramp rate
452 * Register layout:
453 * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0]
454 * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0] */
455 static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
456
457 static inline int PWM_RR_FROM_REG(int reg, int ix)
458 {
459 int rr = (ix == 1) ? reg >> 4 : reg;
460
461 return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0;
462 }
463
464 static int PWM_RR_TO_REG(int val, int ix, int reg)
465 {
466 int i;
467
468 for (i = 0; i < 7; i++) {
469 if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2) {
470 break;
471 }
472 }
473
474 return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i;
475 }
476
477 /* PWM ramp rate enable */
478 static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
479 {
480 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
481 }
482
483 static inline int PWM_RR_EN_TO_REG(int val, int ix, int reg)
484 {
485 int en = (ix == 1) ? 0x80 : 0x08;
486
487 return val ? reg | en : reg & ~en;
488 }
489
490 /* PWM min/off
491 * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for
492 * the register layout). */
493 static inline int PWM_OFF_FROM_REG(int reg, int ix)
494 {
495 return (reg >> (ix + 5)) & 0x01;
496 }
497
498 static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
499 {
500 return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5));
501 }
502
503 /* ---------------------------------------------------------------------
504 * Device I/O access
505 *
506 * ISA access is performed through an index/data register pair and needs to
507 * be protected by a mutex during runtime (not required for initialization).
508 * We use data->update_lock for this and need to ensure that we acquire it
509 * before calling dme1737_read or dme1737_write.
510 * --------------------------------------------------------------------- */
511
512 static u8 dme1737_read(const struct dme1737_data *data, u8 reg)
513 {
514 struct i2c_client *client = data->client;
515 s32 val;
516
517 if (client) { /* I2C device */
518 val = i2c_smbus_read_byte_data(client, reg);
519
520 if (val < 0) {
521 dev_warn(&client->dev, "Read from register "
522 "0x%02x failed! Please report to the driver "
523 "maintainer.\n", reg);
524 }
525 } else { /* ISA device */
526 outb(reg, data->addr);
527 val = inb(data->addr + 1);
528 }
529
530 return val;
531 }
532
533 static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val)
534 {
535 struct i2c_client *client = data->client;
536 s32 res = 0;
537
538 if (client) { /* I2C device */
539 res = i2c_smbus_write_byte_data(client, reg, val);
540
541 if (res < 0) {
542 dev_warn(&client->dev, "Write to register "
543 "0x%02x failed! Please report to the driver "
544 "maintainer.\n", reg);
545 }
546 } else { /* ISA device */
547 outb(reg, data->addr);
548 outb(val, data->addr + 1);
549 }
550
551 return res;
552 }
553
554 static struct dme1737_data *dme1737_update_device(struct device *dev)
555 {
556 struct dme1737_data *data = dev_get_drvdata(dev);
557 int ix;
558 u8 lsb[5];
559
560 mutex_lock(&data->update_lock);
561
562 /* Enable a Vbat monitoring cycle every 10 mins */
563 if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) {
564 dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data,
565 DME1737_REG_CONFIG) | 0x10);
566 data->last_vbat = jiffies;
567 }
568
569 /* Sample register contents every 1 sec */
570 if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
571 if (data->type == dme1737) {
572 data->vid = dme1737_read(data, DME1737_REG_VID) &
573 0x3f;
574 }
575
576 /* In (voltage) registers */
577 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
578 /* Voltage inputs are stored as 16 bit values even
579 * though they have only 12 bits resolution. This is
580 * to make it consistent with the temp inputs. */
581 data->in[ix] = dme1737_read(data,
582 DME1737_REG_IN(ix)) << 8;
583 data->in_min[ix] = dme1737_read(data,
584 DME1737_REG_IN_MIN(ix));
585 data->in_max[ix] = dme1737_read(data,
586 DME1737_REG_IN_MAX(ix));
587 }
588
589 /* Temp registers */
590 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
591 /* Temp inputs are stored as 16 bit values even
592 * though they have only 12 bits resolution. This is
593 * to take advantage of implicit conversions between
594 * register values (2's complement) and temp values
595 * (signed decimal). */
596 data->temp[ix] = dme1737_read(data,
597 DME1737_REG_TEMP(ix)) << 8;
598 data->temp_min[ix] = dme1737_read(data,
599 DME1737_REG_TEMP_MIN(ix));
600 data->temp_max[ix] = dme1737_read(data,
601 DME1737_REG_TEMP_MAX(ix));
602 if (data->type != sch5027) {
603 data->temp_offset[ix] = dme1737_read(data,
604 DME1737_REG_TEMP_OFFSET(ix));
605 }
606 }
607
608 /* In and temp LSB registers
609 * The LSBs are latched when the MSBs are read, so the order in
610 * which the registers are read (MSB first, then LSB) is
611 * important! */
612 for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) {
613 lsb[ix] = dme1737_read(data,
614 DME1737_REG_IN_TEMP_LSB(ix));
615 }
616 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
617 data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] <<
618 DME1737_REG_IN_LSB_SHL[ix]) & 0xf0;
619 }
620 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
621 data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] <<
622 DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0;
623 }
624
625 /* Fan registers */
626 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
627 /* Skip reading registers if optional fans are not
628 * present */
629 if (!(data->has_fan & (1 << ix))) {
630 continue;
631 }
632 data->fan[ix] = dme1737_read(data,
633 DME1737_REG_FAN(ix));
634 data->fan[ix] |= dme1737_read(data,
635 DME1737_REG_FAN(ix) + 1) << 8;
636 data->fan_min[ix] = dme1737_read(data,
637 DME1737_REG_FAN_MIN(ix));
638 data->fan_min[ix] |= dme1737_read(data,
639 DME1737_REG_FAN_MIN(ix) + 1) << 8;
640 data->fan_opt[ix] = dme1737_read(data,
641 DME1737_REG_FAN_OPT(ix));
642 /* fan_max exists only for fan[5-6] */
643 if (ix > 3) {
644 data->fan_max[ix - 4] = dme1737_read(data,
645 DME1737_REG_FAN_MAX(ix));
646 }
647 }
648
649 /* PWM registers */
650 for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
651 /* Skip reading registers if optional PWMs are not
652 * present */
653 if (!(data->has_pwm & (1 << ix))) {
654 continue;
655 }
656 data->pwm[ix] = dme1737_read(data,
657 DME1737_REG_PWM(ix));
658 data->pwm_freq[ix] = dme1737_read(data,
659 DME1737_REG_PWM_FREQ(ix));
660 /* pwm_config and pwm_min exist only for pwm[1-3] */
661 if (ix < 3) {
662 data->pwm_config[ix] = dme1737_read(data,
663 DME1737_REG_PWM_CONFIG(ix));
664 data->pwm_min[ix] = dme1737_read(data,
665 DME1737_REG_PWM_MIN(ix));
666 }
667 }
668 for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) {
669 data->pwm_rr[ix] = dme1737_read(data,
670 DME1737_REG_PWM_RR(ix));
671 }
672
673 /* Thermal zone registers */
674 for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
675 data->zone_low[ix] = dme1737_read(data,
676 DME1737_REG_ZONE_LOW(ix));
677 data->zone_abs[ix] = dme1737_read(data,
678 DME1737_REG_ZONE_ABS(ix));
679 }
680 if (data->type != sch5027) {
681 for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
682 data->zone_hyst[ix] = dme1737_read(data,
683 DME1737_REG_ZONE_HYST(ix));
684 }
685 }
686
687 /* Alarm registers */
688 data->alarms = dme1737_read(data,
689 DME1737_REG_ALARM1);
690 /* Bit 7 tells us if the other alarm registers are non-zero and
691 * therefore also need to be read */
692 if (data->alarms & 0x80) {
693 data->alarms |= dme1737_read(data,
694 DME1737_REG_ALARM2) << 8;
695 data->alarms |= dme1737_read(data,
696 DME1737_REG_ALARM3) << 16;
697 }
698
699 /* The ISA chips require explicit clearing of alarm bits.
700 * Don't worry, an alarm will come back if the condition
701 * that causes it still exists */
702 if (!data->client) {
703 if (data->alarms & 0xff0000) {
704 dme1737_write(data, DME1737_REG_ALARM3,
705 0xff);
706 }
707 if (data->alarms & 0xff00) {
708 dme1737_write(data, DME1737_REG_ALARM2,
709 0xff);
710 }
711 if (data->alarms & 0xff) {
712 dme1737_write(data, DME1737_REG_ALARM1,
713 0xff);
714 }
715 }
716
717 data->last_update = jiffies;
718 data->valid = 1;
719 }
720
721 mutex_unlock(&data->update_lock);
722
723 return data;
724 }
725
726 /* ---------------------------------------------------------------------
727 * Voltage sysfs attributes
728 * ix = [0-5]
729 * --------------------------------------------------------------------- */
730
731 #define SYS_IN_INPUT 0
732 #define SYS_IN_MIN 1
733 #define SYS_IN_MAX 2
734 #define SYS_IN_ALARM 3
735
736 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
737 char *buf)
738 {
739 struct dme1737_data *data = dme1737_update_device(dev);
740 struct sensor_device_attribute_2
741 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
742 int ix = sensor_attr_2->index;
743 int fn = sensor_attr_2->nr;
744 int res;
745
746 switch (fn) {
747 case SYS_IN_INPUT:
748 res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16);
749 break;
750 case SYS_IN_MIN:
751 res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8);
752 break;
753 case SYS_IN_MAX:
754 res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8);
755 break;
756 case SYS_IN_ALARM:
757 res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01;
758 break;
759 default:
760 res = 0;
761 dev_dbg(dev, "Unknown function %d.\n", fn);
762 }
763
764 return sprintf(buf, "%d\n", res);
765 }
766
767 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
768 const char *buf, size_t count)
769 {
770 struct dme1737_data *data = dev_get_drvdata(dev);
771 struct sensor_device_attribute_2
772 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
773 int ix = sensor_attr_2->index;
774 int fn = sensor_attr_2->nr;
775 long val = simple_strtol(buf, NULL, 10);
776
777 mutex_lock(&data->update_lock);
778 switch (fn) {
779 case SYS_IN_MIN:
780 data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]);
781 dme1737_write(data, DME1737_REG_IN_MIN(ix),
782 data->in_min[ix]);
783 break;
784 case SYS_IN_MAX:
785 data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]);
786 dme1737_write(data, DME1737_REG_IN_MAX(ix),
787 data->in_max[ix]);
788 break;
789 default:
790 dev_dbg(dev, "Unknown function %d.\n", fn);
791 }
792 mutex_unlock(&data->update_lock);
793
794 return count;
795 }
796
797 /* ---------------------------------------------------------------------
798 * Temperature sysfs attributes
799 * ix = [0-2]
800 * --------------------------------------------------------------------- */
801
802 #define SYS_TEMP_INPUT 0
803 #define SYS_TEMP_MIN 1
804 #define SYS_TEMP_MAX 2
805 #define SYS_TEMP_OFFSET 3
806 #define SYS_TEMP_ALARM 4
807 #define SYS_TEMP_FAULT 5
808
809 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
810 char *buf)
811 {
812 struct dme1737_data *data = dme1737_update_device(dev);
813 struct sensor_device_attribute_2
814 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
815 int ix = sensor_attr_2->index;
816 int fn = sensor_attr_2->nr;
817 int res;
818
819 switch (fn) {
820 case SYS_TEMP_INPUT:
821 res = TEMP_FROM_REG(data->temp[ix], 16);
822 break;
823 case SYS_TEMP_MIN:
824 res = TEMP_FROM_REG(data->temp_min[ix], 8);
825 break;
826 case SYS_TEMP_MAX:
827 res = TEMP_FROM_REG(data->temp_max[ix], 8);
828 break;
829 case SYS_TEMP_OFFSET:
830 res = TEMP_FROM_REG(data->temp_offset[ix], 8);
831 break;
832 case SYS_TEMP_ALARM:
833 res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01;
834 break;
835 case SYS_TEMP_FAULT:
836 res = (((u16)data->temp[ix] & 0xff00) == 0x8000);
837 break;
838 default:
839 res = 0;
840 dev_dbg(dev, "Unknown function %d.\n", fn);
841 }
842
843 return sprintf(buf, "%d\n", res);
844 }
845
846 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
847 const char *buf, size_t count)
848 {
849 struct dme1737_data *data = dev_get_drvdata(dev);
850 struct sensor_device_attribute_2
851 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
852 int ix = sensor_attr_2->index;
853 int fn = sensor_attr_2->nr;
854 long val = simple_strtol(buf, NULL, 10);
855
856 mutex_lock(&data->update_lock);
857 switch (fn) {
858 case SYS_TEMP_MIN:
859 data->temp_min[ix] = TEMP_TO_REG(val);
860 dme1737_write(data, DME1737_REG_TEMP_MIN(ix),
861 data->temp_min[ix]);
862 break;
863 case SYS_TEMP_MAX:
864 data->temp_max[ix] = TEMP_TO_REG(val);
865 dme1737_write(data, DME1737_REG_TEMP_MAX(ix),
866 data->temp_max[ix]);
867 break;
868 case SYS_TEMP_OFFSET:
869 data->temp_offset[ix] = TEMP_TO_REG(val);
870 dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix),
871 data->temp_offset[ix]);
872 break;
873 default:
874 dev_dbg(dev, "Unknown function %d.\n", fn);
875 }
876 mutex_unlock(&data->update_lock);
877
878 return count;
879 }
880
881 /* ---------------------------------------------------------------------
882 * Zone sysfs attributes
883 * ix = [0-2]
884 * --------------------------------------------------------------------- */
885
886 #define SYS_ZONE_AUTO_CHANNELS_TEMP 0
887 #define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1
888 #define SYS_ZONE_AUTO_POINT1_TEMP 2
889 #define SYS_ZONE_AUTO_POINT2_TEMP 3
890 #define SYS_ZONE_AUTO_POINT3_TEMP 4
891
892 static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
893 char *buf)
894 {
895 struct dme1737_data *data = dme1737_update_device(dev);
896 struct sensor_device_attribute_2
897 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
898 int ix = sensor_attr_2->index;
899 int fn = sensor_attr_2->nr;
900 int res;
901
902 switch (fn) {
903 case SYS_ZONE_AUTO_CHANNELS_TEMP:
904 /* check config2 for non-standard temp-to-zone mapping */
905 if ((ix == 1) && (data->config2 & 0x02)) {
906 res = 4;
907 } else {
908 res = 1 << ix;
909 }
910 break;
911 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
912 res = TEMP_FROM_REG(data->zone_low[ix], 8) -
913 TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix);
914 break;
915 case SYS_ZONE_AUTO_POINT1_TEMP:
916 res = TEMP_FROM_REG(data->zone_low[ix], 8);
917 break;
918 case SYS_ZONE_AUTO_POINT2_TEMP:
919 /* pwm_freq holds the temp range bits in the upper nibble */
920 res = TEMP_FROM_REG(data->zone_low[ix], 8) +
921 TEMP_RANGE_FROM_REG(data->pwm_freq[ix]);
922 break;
923 case SYS_ZONE_AUTO_POINT3_TEMP:
924 res = TEMP_FROM_REG(data->zone_abs[ix], 8);
925 break;
926 default:
927 res = 0;
928 dev_dbg(dev, "Unknown function %d.\n", fn);
929 }
930
931 return sprintf(buf, "%d\n", res);
932 }
933
934 static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
935 const char *buf, size_t count)
936 {
937 struct dme1737_data *data = dev_get_drvdata(dev);
938 struct sensor_device_attribute_2
939 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
940 int ix = sensor_attr_2->index;
941 int fn = sensor_attr_2->nr;
942 long val = simple_strtol(buf, NULL, 10);
943
944 mutex_lock(&data->update_lock);
945 switch (fn) {
946 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
947 /* Refresh the cache */
948 data->zone_low[ix] = dme1737_read(data,
949 DME1737_REG_ZONE_LOW(ix));
950 /* Modify the temp hyst value */
951 data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(
952 TEMP_FROM_REG(data->zone_low[ix], 8) -
953 val, ix, dme1737_read(data,
954 DME1737_REG_ZONE_HYST(ix == 2)));
955 dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2),
956 data->zone_hyst[ix == 2]);
957 break;
958 case SYS_ZONE_AUTO_POINT1_TEMP:
959 data->zone_low[ix] = TEMP_TO_REG(val);
960 dme1737_write(data, DME1737_REG_ZONE_LOW(ix),
961 data->zone_low[ix]);
962 break;
963 case SYS_ZONE_AUTO_POINT2_TEMP:
964 /* Refresh the cache */
965 data->zone_low[ix] = dme1737_read(data,
966 DME1737_REG_ZONE_LOW(ix));
967 /* Modify the temp range value (which is stored in the upper
968 * nibble of the pwm_freq register) */
969 data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val -
970 TEMP_FROM_REG(data->zone_low[ix], 8),
971 dme1737_read(data,
972 DME1737_REG_PWM_FREQ(ix)));
973 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
974 data->pwm_freq[ix]);
975 break;
976 case SYS_ZONE_AUTO_POINT3_TEMP:
977 data->zone_abs[ix] = TEMP_TO_REG(val);
978 dme1737_write(data, DME1737_REG_ZONE_ABS(ix),
979 data->zone_abs[ix]);
980 break;
981 default:
982 dev_dbg(dev, "Unknown function %d.\n", fn);
983 }
984 mutex_unlock(&data->update_lock);
985
986 return count;
987 }
988
989 /* ---------------------------------------------------------------------
990 * Fan sysfs attributes
991 * ix = [0-5]
992 * --------------------------------------------------------------------- */
993
994 #define SYS_FAN_INPUT 0
995 #define SYS_FAN_MIN 1
996 #define SYS_FAN_MAX 2
997 #define SYS_FAN_ALARM 3
998 #define SYS_FAN_TYPE 4
999
1000 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1001 char *buf)
1002 {
1003 struct dme1737_data *data = dme1737_update_device(dev);
1004 struct sensor_device_attribute_2
1005 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1006 int ix = sensor_attr_2->index;
1007 int fn = sensor_attr_2->nr;
1008 int res;
1009
1010 switch (fn) {
1011 case SYS_FAN_INPUT:
1012 res = FAN_FROM_REG(data->fan[ix],
1013 ix < 4 ? 0 :
1014 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1015 break;
1016 case SYS_FAN_MIN:
1017 res = FAN_FROM_REG(data->fan_min[ix],
1018 ix < 4 ? 0 :
1019 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1020 break;
1021 case SYS_FAN_MAX:
1022 /* only valid for fan[5-6] */
1023 res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]);
1024 break;
1025 case SYS_FAN_ALARM:
1026 res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01;
1027 break;
1028 case SYS_FAN_TYPE:
1029 /* only valid for fan[1-4] */
1030 res = FAN_TYPE_FROM_REG(data->fan_opt[ix]);
1031 break;
1032 default:
1033 res = 0;
1034 dev_dbg(dev, "Unknown function %d.\n", fn);
1035 }
1036
1037 return sprintf(buf, "%d\n", res);
1038 }
1039
1040 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1041 const char *buf, size_t count)
1042 {
1043 struct dme1737_data *data = dev_get_drvdata(dev);
1044 struct sensor_device_attribute_2
1045 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1046 int ix = sensor_attr_2->index;
1047 int fn = sensor_attr_2->nr;
1048 long val = simple_strtol(buf, NULL, 10);
1049
1050 mutex_lock(&data->update_lock);
1051 switch (fn) {
1052 case SYS_FAN_MIN:
1053 if (ix < 4) {
1054 data->fan_min[ix] = FAN_TO_REG(val, 0);
1055 } else {
1056 /* Refresh the cache */
1057 data->fan_opt[ix] = dme1737_read(data,
1058 DME1737_REG_FAN_OPT(ix));
1059 /* Modify the fan min value */
1060 data->fan_min[ix] = FAN_TO_REG(val,
1061 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1062 }
1063 dme1737_write(data, DME1737_REG_FAN_MIN(ix),
1064 data->fan_min[ix] & 0xff);
1065 dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1,
1066 data->fan_min[ix] >> 8);
1067 break;
1068 case SYS_FAN_MAX:
1069 /* Only valid for fan[5-6] */
1070 data->fan_max[ix - 4] = FAN_MAX_TO_REG(val);
1071 dme1737_write(data, DME1737_REG_FAN_MAX(ix),
1072 data->fan_max[ix - 4]);
1073 break;
1074 case SYS_FAN_TYPE:
1075 /* Only valid for fan[1-4] */
1076 if (!(val == 1 || val == 2 || val == 4)) {
1077 count = -EINVAL;
1078 dev_warn(dev, "Fan type value %ld not "
1079 "supported. Choose one of 1, 2, or 4.\n",
1080 val);
1081 goto exit;
1082 }
1083 data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data,
1084 DME1737_REG_FAN_OPT(ix)));
1085 dme1737_write(data, DME1737_REG_FAN_OPT(ix),
1086 data->fan_opt[ix]);
1087 break;
1088 default:
1089 dev_dbg(dev, "Unknown function %d.\n", fn);
1090 }
1091 exit:
1092 mutex_unlock(&data->update_lock);
1093
1094 return count;
1095 }
1096
1097 /* ---------------------------------------------------------------------
1098 * PWM sysfs attributes
1099 * ix = [0-4]
1100 * --------------------------------------------------------------------- */
1101
1102 #define SYS_PWM 0
1103 #define SYS_PWM_FREQ 1
1104 #define SYS_PWM_ENABLE 2
1105 #define SYS_PWM_RAMP_RATE 3
1106 #define SYS_PWM_AUTO_CHANNELS_ZONE 4
1107 #define SYS_PWM_AUTO_PWM_MIN 5
1108 #define SYS_PWM_AUTO_POINT1_PWM 6
1109 #define SYS_PWM_AUTO_POINT2_PWM 7
1110
1111 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1112 char *buf)
1113 {
1114 struct dme1737_data *data = dme1737_update_device(dev);
1115 struct sensor_device_attribute_2
1116 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1117 int ix = sensor_attr_2->index;
1118 int fn = sensor_attr_2->nr;
1119 int res;
1120
1121 switch (fn) {
1122 case SYS_PWM:
1123 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0) {
1124 res = 255;
1125 } else {
1126 res = data->pwm[ix];
1127 }
1128 break;
1129 case SYS_PWM_FREQ:
1130 res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
1131 break;
1132 case SYS_PWM_ENABLE:
1133 if (ix >= 3) {
1134 res = 1; /* pwm[5-6] hard-wired to manual mode */
1135 } else {
1136 res = PWM_EN_FROM_REG(data->pwm_config[ix]);
1137 }
1138 break;
1139 case SYS_PWM_RAMP_RATE:
1140 /* Only valid for pwm[1-3] */
1141 res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix);
1142 break;
1143 case SYS_PWM_AUTO_CHANNELS_ZONE:
1144 /* Only valid for pwm[1-3] */
1145 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1146 res = PWM_ACZ_FROM_REG(data->pwm_config[ix]);
1147 } else {
1148 res = data->pwm_acz[ix];
1149 }
1150 break;
1151 case SYS_PWM_AUTO_PWM_MIN:
1152 /* Only valid for pwm[1-3] */
1153 if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix)) {
1154 res = data->pwm_min[ix];
1155 } else {
1156 res = 0;
1157 }
1158 break;
1159 case SYS_PWM_AUTO_POINT1_PWM:
1160 /* Only valid for pwm[1-3] */
1161 res = data->pwm_min[ix];
1162 break;
1163 case SYS_PWM_AUTO_POINT2_PWM:
1164 /* Only valid for pwm[1-3] */
1165 res = 255; /* hard-wired */
1166 break;
1167 default:
1168 res = 0;
1169 dev_dbg(dev, "Unknown function %d.\n", fn);
1170 }
1171
1172 return sprintf(buf, "%d\n", res);
1173 }
1174
1175 static struct attribute *dme1737_pwm_chmod_attr[];
1176 static void dme1737_chmod_file(struct device*, struct attribute*, mode_t);
1177
1178 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1179 const char *buf, size_t count)
1180 {
1181 struct dme1737_data *data = dev_get_drvdata(dev);
1182 struct sensor_device_attribute_2
1183 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1184 int ix = sensor_attr_2->index;
1185 int fn = sensor_attr_2->nr;
1186 long val = simple_strtol(buf, NULL, 10);
1187
1188 mutex_lock(&data->update_lock);
1189 switch (fn) {
1190 case SYS_PWM:
1191 data->pwm[ix] = SENSORS_LIMIT(val, 0, 255);
1192 dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]);
1193 break;
1194 case SYS_PWM_FREQ:
1195 data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data,
1196 DME1737_REG_PWM_FREQ(ix)));
1197 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1198 data->pwm_freq[ix]);
1199 break;
1200 case SYS_PWM_ENABLE:
1201 /* Only valid for pwm[1-3] */
1202 if (val < 0 || val > 2) {
1203 count = -EINVAL;
1204 dev_warn(dev, "PWM enable %ld not "
1205 "supported. Choose one of 0, 1, or 2.\n",
1206 val);
1207 goto exit;
1208 }
1209 /* Refresh the cache */
1210 data->pwm_config[ix] = dme1737_read(data,
1211 DME1737_REG_PWM_CONFIG(ix));
1212 if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) {
1213 /* Bail out if no change */
1214 goto exit;
1215 }
1216 /* Do some housekeeping if we are currently in auto mode */
1217 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1218 /* Save the current zone channel assignment */
1219 data->pwm_acz[ix] = PWM_ACZ_FROM_REG(
1220 data->pwm_config[ix]);
1221 /* Save the current ramp rate state and disable it */
1222 data->pwm_rr[ix > 0] = dme1737_read(data,
1223 DME1737_REG_PWM_RR(ix > 0));
1224 data->pwm_rr_en &= ~(1 << ix);
1225 if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) {
1226 data->pwm_rr_en |= (1 << ix);
1227 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix,
1228 data->pwm_rr[ix > 0]);
1229 dme1737_write(data,
1230 DME1737_REG_PWM_RR(ix > 0),
1231 data->pwm_rr[ix > 0]);
1232 }
1233 }
1234 /* Set the new PWM mode */
1235 switch (val) {
1236 case 0:
1237 /* Change permissions of pwm[ix] to read-only */
1238 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1239 S_IRUGO);
1240 /* Turn fan fully on */
1241 data->pwm_config[ix] = PWM_EN_TO_REG(0,
1242 data->pwm_config[ix]);
1243 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1244 data->pwm_config[ix]);
1245 break;
1246 case 1:
1247 /* Turn on manual mode */
1248 data->pwm_config[ix] = PWM_EN_TO_REG(1,
1249 data->pwm_config[ix]);
1250 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1251 data->pwm_config[ix]);
1252 /* Change permissions of pwm[ix] to read-writeable */
1253 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1254 S_IRUGO | S_IWUSR);
1255 break;
1256 case 2:
1257 /* Change permissions of pwm[ix] to read-only */
1258 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1259 S_IRUGO);
1260 /* Turn on auto mode using the saved zone channel
1261 * assignment */
1262 data->pwm_config[ix] = PWM_ACZ_TO_REG(
1263 data->pwm_acz[ix],
1264 data->pwm_config[ix]);
1265 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1266 data->pwm_config[ix]);
1267 /* Enable PWM ramp rate if previously enabled */
1268 if (data->pwm_rr_en & (1 << ix)) {
1269 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix,
1270 dme1737_read(data,
1271 DME1737_REG_PWM_RR(ix > 0)));
1272 dme1737_write(data,
1273 DME1737_REG_PWM_RR(ix > 0),
1274 data->pwm_rr[ix > 0]);
1275 }
1276 break;
1277 }
1278 break;
1279 case SYS_PWM_RAMP_RATE:
1280 /* Only valid for pwm[1-3] */
1281 /* Refresh the cache */
1282 data->pwm_config[ix] = dme1737_read(data,
1283 DME1737_REG_PWM_CONFIG(ix));
1284 data->pwm_rr[ix > 0] = dme1737_read(data,
1285 DME1737_REG_PWM_RR(ix > 0));
1286 /* Set the ramp rate value */
1287 if (val > 0) {
1288 data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix,
1289 data->pwm_rr[ix > 0]);
1290 }
1291 /* Enable/disable the feature only if the associated PWM
1292 * output is in automatic mode. */
1293 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1294 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix,
1295 data->pwm_rr[ix > 0]);
1296 }
1297 dme1737_write(data, DME1737_REG_PWM_RR(ix > 0),
1298 data->pwm_rr[ix > 0]);
1299 break;
1300 case SYS_PWM_AUTO_CHANNELS_ZONE:
1301 /* Only valid for pwm[1-3] */
1302 if (!(val == 1 || val == 2 || val == 4 ||
1303 val == 6 || val == 7)) {
1304 count = -EINVAL;
1305 dev_warn(dev, "PWM auto channels zone %ld "
1306 "not supported. Choose one of 1, 2, 4, 6, "
1307 "or 7.\n", val);
1308 goto exit;
1309 }
1310 /* Refresh the cache */
1311 data->pwm_config[ix] = dme1737_read(data,
1312 DME1737_REG_PWM_CONFIG(ix));
1313 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1314 /* PWM is already in auto mode so update the temp
1315 * channel assignment */
1316 data->pwm_config[ix] = PWM_ACZ_TO_REG(val,
1317 data->pwm_config[ix]);
1318 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1319 data->pwm_config[ix]);
1320 } else {
1321 /* PWM is not in auto mode so we save the temp
1322 * channel assignment for later use */
1323 data->pwm_acz[ix] = val;
1324 }
1325 break;
1326 case SYS_PWM_AUTO_PWM_MIN:
1327 /* Only valid for pwm[1-3] */
1328 /* Refresh the cache */
1329 data->pwm_min[ix] = dme1737_read(data,
1330 DME1737_REG_PWM_MIN(ix));
1331 /* There are only 2 values supported for the auto_pwm_min
1332 * value: 0 or auto_point1_pwm. So if the temperature drops
1333 * below the auto_point1_temp_hyst value, the fan either turns
1334 * off or runs at auto_point1_pwm duty-cycle. */
1335 if (val > ((data->pwm_min[ix] + 1) / 2)) {
1336 data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
1337 dme1737_read(data,
1338 DME1737_REG_PWM_RR(0)));
1339 } else {
1340 data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
1341 dme1737_read(data,
1342 DME1737_REG_PWM_RR(0)));
1343 }
1344 dme1737_write(data, DME1737_REG_PWM_RR(0),
1345 data->pwm_rr[0]);
1346 break;
1347 case SYS_PWM_AUTO_POINT1_PWM:
1348 /* Only valid for pwm[1-3] */
1349 data->pwm_min[ix] = SENSORS_LIMIT(val, 0, 255);
1350 dme1737_write(data, DME1737_REG_PWM_MIN(ix),
1351 data->pwm_min[ix]);
1352 break;
1353 default:
1354 dev_dbg(dev, "Unknown function %d.\n", fn);
1355 }
1356 exit:
1357 mutex_unlock(&data->update_lock);
1358
1359 return count;
1360 }
1361
1362 /* ---------------------------------------------------------------------
1363 * Miscellaneous sysfs attributes
1364 * --------------------------------------------------------------------- */
1365
1366 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
1367 char *buf)
1368 {
1369 struct i2c_client *client = to_i2c_client(dev);
1370 struct dme1737_data *data = i2c_get_clientdata(client);
1371
1372 return sprintf(buf, "%d\n", data->vrm);
1373 }
1374
1375 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
1376 const char *buf, size_t count)
1377 {
1378 struct dme1737_data *data = dev_get_drvdata(dev);
1379 long val = simple_strtol(buf, NULL, 10);
1380
1381 data->vrm = val;
1382 return count;
1383 }
1384
1385 static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
1386 char *buf)
1387 {
1388 struct dme1737_data *data = dme1737_update_device(dev);
1389
1390 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1391 }
1392
1393 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1394 char *buf)
1395 {
1396 struct dme1737_data *data = dev_get_drvdata(dev);
1397
1398 return sprintf(buf, "%s\n", data->name);
1399 }
1400
1401 /* ---------------------------------------------------------------------
1402 * Sysfs device attribute defines and structs
1403 * --------------------------------------------------------------------- */
1404
1405 /* Voltages 0-6 */
1406
1407 #define SENSOR_DEVICE_ATTR_IN(ix) \
1408 static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
1409 show_in, NULL, SYS_IN_INPUT, ix); \
1410 static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
1411 show_in, set_in, SYS_IN_MIN, ix); \
1412 static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
1413 show_in, set_in, SYS_IN_MAX, ix); \
1414 static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
1415 show_in, NULL, SYS_IN_ALARM, ix)
1416
1417 SENSOR_DEVICE_ATTR_IN(0);
1418 SENSOR_DEVICE_ATTR_IN(1);
1419 SENSOR_DEVICE_ATTR_IN(2);
1420 SENSOR_DEVICE_ATTR_IN(3);
1421 SENSOR_DEVICE_ATTR_IN(4);
1422 SENSOR_DEVICE_ATTR_IN(5);
1423 SENSOR_DEVICE_ATTR_IN(6);
1424
1425 /* Temperatures 1-3 */
1426
1427 #define SENSOR_DEVICE_ATTR_TEMP(ix) \
1428 static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
1429 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
1430 static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
1431 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
1432 static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
1433 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
1434 static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
1435 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
1436 static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
1437 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
1438 static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
1439 show_temp, NULL, SYS_TEMP_FAULT, ix-1)
1440
1441 SENSOR_DEVICE_ATTR_TEMP(1);
1442 SENSOR_DEVICE_ATTR_TEMP(2);
1443 SENSOR_DEVICE_ATTR_TEMP(3);
1444
1445 /* Zones 1-3 */
1446
1447 #define SENSOR_DEVICE_ATTR_ZONE(ix) \
1448 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
1449 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
1450 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
1451 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
1452 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
1453 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
1454 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
1455 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
1456 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
1457 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
1458
1459 SENSOR_DEVICE_ATTR_ZONE(1);
1460 SENSOR_DEVICE_ATTR_ZONE(2);
1461 SENSOR_DEVICE_ATTR_ZONE(3);
1462
1463 /* Fans 1-4 */
1464
1465 #define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
1466 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1467 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1468 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1469 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1470 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1471 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1472 static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
1473 show_fan, set_fan, SYS_FAN_TYPE, ix-1)
1474
1475 SENSOR_DEVICE_ATTR_FAN_1TO4(1);
1476 SENSOR_DEVICE_ATTR_FAN_1TO4(2);
1477 SENSOR_DEVICE_ATTR_FAN_1TO4(3);
1478 SENSOR_DEVICE_ATTR_FAN_1TO4(4);
1479
1480 /* Fans 5-6 */
1481
1482 #define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
1483 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1484 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1485 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1486 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1487 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1488 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1489 static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
1490 show_fan, set_fan, SYS_FAN_MAX, ix-1)
1491
1492 SENSOR_DEVICE_ATTR_FAN_5TO6(5);
1493 SENSOR_DEVICE_ATTR_FAN_5TO6(6);
1494
1495 /* PWMs 1-3 */
1496
1497 #define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
1498 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1499 show_pwm, set_pwm, SYS_PWM, ix-1); \
1500 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1501 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1502 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1503 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
1504 static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
1505 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
1506 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
1507 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
1508 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
1509 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
1510 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
1511 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
1512 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
1513 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
1514
1515 SENSOR_DEVICE_ATTR_PWM_1TO3(1);
1516 SENSOR_DEVICE_ATTR_PWM_1TO3(2);
1517 SENSOR_DEVICE_ATTR_PWM_1TO3(3);
1518
1519 /* PWMs 5-6 */
1520
1521 #define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
1522 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1523 show_pwm, set_pwm, SYS_PWM, ix-1); \
1524 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1525 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1526 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1527 show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
1528
1529 SENSOR_DEVICE_ATTR_PWM_5TO6(5);
1530 SENSOR_DEVICE_ATTR_PWM_5TO6(6);
1531
1532 /* Misc */
1533
1534 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
1535 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1536 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */
1537
1538 /* This struct holds all the attributes that are always present and need to be
1539 * created unconditionally. The attributes that need modification of their
1540 * permissions are created read-only and write permissions are added or removed
1541 * on the fly when required */
1542 static struct attribute *dme1737_attr[] ={
1543 /* Voltages */
1544 &sensor_dev_attr_in0_input.dev_attr.attr,
1545 &sensor_dev_attr_in0_min.dev_attr.attr,
1546 &sensor_dev_attr_in0_max.dev_attr.attr,
1547 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1548 &sensor_dev_attr_in1_input.dev_attr.attr,
1549 &sensor_dev_attr_in1_min.dev_attr.attr,
1550 &sensor_dev_attr_in1_max.dev_attr.attr,
1551 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1552 &sensor_dev_attr_in2_input.dev_attr.attr,
1553 &sensor_dev_attr_in2_min.dev_attr.attr,
1554 &sensor_dev_attr_in2_max.dev_attr.attr,
1555 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1556 &sensor_dev_attr_in3_input.dev_attr.attr,
1557 &sensor_dev_attr_in3_min.dev_attr.attr,
1558 &sensor_dev_attr_in3_max.dev_attr.attr,
1559 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1560 &sensor_dev_attr_in4_input.dev_attr.attr,
1561 &sensor_dev_attr_in4_min.dev_attr.attr,
1562 &sensor_dev_attr_in4_max.dev_attr.attr,
1563 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1564 &sensor_dev_attr_in5_input.dev_attr.attr,
1565 &sensor_dev_attr_in5_min.dev_attr.attr,
1566 &sensor_dev_attr_in5_max.dev_attr.attr,
1567 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1568 &sensor_dev_attr_in6_input.dev_attr.attr,
1569 &sensor_dev_attr_in6_min.dev_attr.attr,
1570 &sensor_dev_attr_in6_max.dev_attr.attr,
1571 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1572 /* Temperatures */
1573 &sensor_dev_attr_temp1_input.dev_attr.attr,
1574 &sensor_dev_attr_temp1_min.dev_attr.attr,
1575 &sensor_dev_attr_temp1_max.dev_attr.attr,
1576 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1577 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1578 &sensor_dev_attr_temp2_input.dev_attr.attr,
1579 &sensor_dev_attr_temp2_min.dev_attr.attr,
1580 &sensor_dev_attr_temp2_max.dev_attr.attr,
1581 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1582 &sensor_dev_attr_temp2_fault.dev_attr.attr,
1583 &sensor_dev_attr_temp3_input.dev_attr.attr,
1584 &sensor_dev_attr_temp3_min.dev_attr.attr,
1585 &sensor_dev_attr_temp3_max.dev_attr.attr,
1586 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1587 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1588 /* Zones */
1589 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1590 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1591 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1592 &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr,
1593 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1594 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1595 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1596 &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
1597 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1598 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1599 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1600 &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
1601 NULL
1602 };
1603
1604 static const struct attribute_group dme1737_group = {
1605 .attrs = dme1737_attr,
1606 };
1607
1608 /* The following struct holds misc attributes, which are not available in all
1609 * chips. Their creation depends on the chip type which is determined during
1610 * module load. */
1611 static struct attribute *dme1737_misc_attr[] = {
1612 /* Temperatures */
1613 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1614 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1615 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1616 /* Zones */
1617 &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
1618 &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
1619 &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
1620 NULL
1621 };
1622
1623 static const struct attribute_group dme1737_misc_group = {
1624 .attrs = dme1737_misc_attr,
1625 };
1626
1627 /* The following struct holds VID-related attributes. Their creation
1628 depends on the chip type which is determined during module load. */
1629 static struct attribute *dme1737_vid_attr[] = {
1630 &dev_attr_vrm.attr,
1631 &dev_attr_cpu0_vid.attr,
1632 NULL
1633 };
1634
1635 static const struct attribute_group dme1737_vid_group = {
1636 .attrs = dme1737_vid_attr,
1637 };
1638
1639 /* The following structs hold the PWM attributes, some of which are optional.
1640 * Their creation depends on the chip configuration which is determined during
1641 * module load. */
1642 static struct attribute *dme1737_pwm1_attr[] = {
1643 &sensor_dev_attr_pwm1.dev_attr.attr,
1644 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1645 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1646 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1647 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1648 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1649 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1650 NULL
1651 };
1652 static struct attribute *dme1737_pwm2_attr[] = {
1653 &sensor_dev_attr_pwm2.dev_attr.attr,
1654 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1655 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1656 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1657 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1658 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1659 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1660 NULL
1661 };
1662 static struct attribute *dme1737_pwm3_attr[] = {
1663 &sensor_dev_attr_pwm3.dev_attr.attr,
1664 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1665 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1666 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1667 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1668 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1669 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1670 NULL
1671 };
1672 static struct attribute *dme1737_pwm5_attr[] = {
1673 &sensor_dev_attr_pwm5.dev_attr.attr,
1674 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1675 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
1676 NULL
1677 };
1678 static struct attribute *dme1737_pwm6_attr[] = {
1679 &sensor_dev_attr_pwm6.dev_attr.attr,
1680 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1681 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
1682 NULL
1683 };
1684
1685 static const struct attribute_group dme1737_pwm_group[] = {
1686 { .attrs = dme1737_pwm1_attr },
1687 { .attrs = dme1737_pwm2_attr },
1688 { .attrs = dme1737_pwm3_attr },
1689 { .attrs = NULL },
1690 { .attrs = dme1737_pwm5_attr },
1691 { .attrs = dme1737_pwm6_attr },
1692 };
1693
1694 /* The following struct holds misc PWM attributes, which are not available in
1695 * all chips. Their creation depends on the chip type which is determined
1696 * during module load. */
1697 static struct attribute *dme1737_pwm_misc_attr[] = {
1698 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1699 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1700 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1701 };
1702
1703 /* The following structs hold the fan attributes, some of which are optional.
1704 * Their creation depends on the chip configuration which is determined during
1705 * module load. */
1706 static struct attribute *dme1737_fan1_attr[] = {
1707 &sensor_dev_attr_fan1_input.dev_attr.attr,
1708 &sensor_dev_attr_fan1_min.dev_attr.attr,
1709 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1710 &sensor_dev_attr_fan1_type.dev_attr.attr,
1711 NULL
1712 };
1713 static struct attribute *dme1737_fan2_attr[] = {
1714 &sensor_dev_attr_fan2_input.dev_attr.attr,
1715 &sensor_dev_attr_fan2_min.dev_attr.attr,
1716 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1717 &sensor_dev_attr_fan2_type.dev_attr.attr,
1718 NULL
1719 };
1720 static struct attribute *dme1737_fan3_attr[] = {
1721 &sensor_dev_attr_fan3_input.dev_attr.attr,
1722 &sensor_dev_attr_fan3_min.dev_attr.attr,
1723 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1724 &sensor_dev_attr_fan3_type.dev_attr.attr,
1725 NULL
1726 };
1727 static struct attribute *dme1737_fan4_attr[] = {
1728 &sensor_dev_attr_fan4_input.dev_attr.attr,
1729 &sensor_dev_attr_fan4_min.dev_attr.attr,
1730 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1731 &sensor_dev_attr_fan4_type.dev_attr.attr,
1732 NULL
1733 };
1734 static struct attribute *dme1737_fan5_attr[] = {
1735 &sensor_dev_attr_fan5_input.dev_attr.attr,
1736 &sensor_dev_attr_fan5_min.dev_attr.attr,
1737 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1738 &sensor_dev_attr_fan5_max.dev_attr.attr,
1739 NULL
1740 };
1741 static struct attribute *dme1737_fan6_attr[] = {
1742 &sensor_dev_attr_fan6_input.dev_attr.attr,
1743 &sensor_dev_attr_fan6_min.dev_attr.attr,
1744 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1745 &sensor_dev_attr_fan6_max.dev_attr.attr,
1746 NULL
1747 };
1748
1749 static const struct attribute_group dme1737_fan_group[] = {
1750 { .attrs = dme1737_fan1_attr },
1751 { .attrs = dme1737_fan2_attr },
1752 { .attrs = dme1737_fan3_attr },
1753 { .attrs = dme1737_fan4_attr },
1754 { .attrs = dme1737_fan5_attr },
1755 { .attrs = dme1737_fan6_attr },
1756 };
1757
1758 /* The permissions of the following zone attributes are changed to read-
1759 * writeable if the chip is *not* locked. Otherwise they stay read-only. */
1760 static struct attribute *dme1737_zone_chmod_attr[] = {
1761 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1762 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1763 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1764 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1765 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1766 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1767 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1768 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1769 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1770 NULL
1771 };
1772
1773 static const struct attribute_group dme1737_zone_chmod_group = {
1774 .attrs = dme1737_zone_chmod_attr,
1775 };
1776
1777 /* The permissions of the following PWM attributes are changed to read-
1778 * writeable if the chip is *not* locked and the respective PWM is available.
1779 * Otherwise they stay read-only. */
1780 static struct attribute *dme1737_pwm1_chmod_attr[] = {
1781 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1782 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1783 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1784 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1785 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1786 NULL
1787 };
1788 static struct attribute *dme1737_pwm2_chmod_attr[] = {
1789 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1790 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1791 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1792 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1793 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1794 NULL
1795 };
1796 static struct attribute *dme1737_pwm3_chmod_attr[] = {
1797 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1798 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1799 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1800 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1801 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1802 NULL
1803 };
1804 static struct attribute *dme1737_pwm5_chmod_attr[] = {
1805 &sensor_dev_attr_pwm5.dev_attr.attr,
1806 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1807 NULL
1808 };
1809 static struct attribute *dme1737_pwm6_chmod_attr[] = {
1810 &sensor_dev_attr_pwm6.dev_attr.attr,
1811 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1812 NULL
1813 };
1814
1815 static const struct attribute_group dme1737_pwm_chmod_group[] = {
1816 { .attrs = dme1737_pwm1_chmod_attr },
1817 { .attrs = dme1737_pwm2_chmod_attr },
1818 { .attrs = dme1737_pwm3_chmod_attr },
1819 { .attrs = NULL },
1820 { .attrs = dme1737_pwm5_chmod_attr },
1821 { .attrs = dme1737_pwm6_chmod_attr },
1822 };
1823
1824 /* Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
1825 * chip is not locked. Otherwise they are read-only. */
1826 static struct attribute *dme1737_pwm_chmod_attr[] = {
1827 &sensor_dev_attr_pwm1.dev_attr.attr,
1828 &sensor_dev_attr_pwm2.dev_attr.attr,
1829 &sensor_dev_attr_pwm3.dev_attr.attr,
1830 };
1831
1832 /* ---------------------------------------------------------------------
1833 * Super-IO functions
1834 * --------------------------------------------------------------------- */
1835
1836 static inline void dme1737_sio_enter(int sio_cip)
1837 {
1838 outb(0x55, sio_cip);
1839 }
1840
1841 static inline void dme1737_sio_exit(int sio_cip)
1842 {
1843 outb(0xaa, sio_cip);
1844 }
1845
1846 static inline int dme1737_sio_inb(int sio_cip, int reg)
1847 {
1848 outb(reg, sio_cip);
1849 return inb(sio_cip + 1);
1850 }
1851
1852 static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
1853 {
1854 outb(reg, sio_cip);
1855 outb(val, sio_cip + 1);
1856 }
1857
1858 /* ---------------------------------------------------------------------
1859 * Device initialization
1860 * --------------------------------------------------------------------- */
1861
1862 static int dme1737_i2c_get_features(int, struct dme1737_data*);
1863
1864 static void dme1737_chmod_file(struct device *dev,
1865 struct attribute *attr, mode_t mode)
1866 {
1867 if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
1868 dev_warn(dev, "Failed to change permissions of %s.\n",
1869 attr->name);
1870 }
1871 }
1872
1873 static void dme1737_chmod_group(struct device *dev,
1874 const struct attribute_group *group,
1875 mode_t mode)
1876 {
1877 struct attribute **attr;
1878
1879 for (attr = group->attrs; *attr; attr++) {
1880 dme1737_chmod_file(dev, *attr, mode);
1881 }
1882 }
1883
1884 static void dme1737_remove_files(struct device *dev)
1885 {
1886 struct dme1737_data *data = dev_get_drvdata(dev);
1887 int ix;
1888
1889 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
1890 if (data->has_fan & (1 << ix)) {
1891 sysfs_remove_group(&dev->kobj,
1892 &dme1737_fan_group[ix]);
1893 }
1894 }
1895
1896 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
1897 if (data->has_pwm & (1 << ix)) {
1898 sysfs_remove_group(&dev->kobj,
1899 &dme1737_pwm_group[ix]);
1900 if (data->type != sch5027 && ix < 3) {
1901 sysfs_remove_file(&dev->kobj,
1902 dme1737_pwm_misc_attr[ix]);
1903 }
1904 }
1905 }
1906
1907 if (data->type != sch5027) {
1908 sysfs_remove_group(&dev->kobj, &dme1737_misc_group);
1909 }
1910 if (data->type == dme1737) {
1911 sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
1912 }
1913
1914 sysfs_remove_group(&dev->kobj, &dme1737_group);
1915
1916 if (!data->client) {
1917 sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
1918 }
1919 }
1920
1921 static int dme1737_create_files(struct device *dev)
1922 {
1923 struct dme1737_data *data = dev_get_drvdata(dev);
1924 int err, ix;
1925
1926 /* Create a name attribute for ISA devices */
1927 if (!data->client &&
1928 (err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr))) {
1929 goto exit;
1930 }
1931
1932 /* Create standard sysfs attributes */
1933 if ((err = sysfs_create_group(&dev->kobj, &dme1737_group))) {
1934 goto exit_remove;
1935 }
1936
1937 /* Create misc sysfs attributes */
1938 if ((data->type != sch5027) &&
1939 (err = sysfs_create_group(&dev->kobj,
1940 &dme1737_misc_group))) {
1941 goto exit_remove;
1942 }
1943
1944 /* Create VID-related sysfs attributes */
1945 if ((data->type == dme1737) &&
1946 (err = sysfs_create_group(&dev->kobj,
1947 &dme1737_vid_group))) {
1948 goto exit_remove;
1949 }
1950
1951 /* Create fan sysfs attributes */
1952 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
1953 if (data->has_fan & (1 << ix)) {
1954 if ((err = sysfs_create_group(&dev->kobj,
1955 &dme1737_fan_group[ix]))) {
1956 goto exit_remove;
1957 }
1958 }
1959 }
1960
1961 /* Create PWM sysfs attributes */
1962 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
1963 if (data->has_pwm & (1 << ix)) {
1964 if ((err = sysfs_create_group(&dev->kobj,
1965 &dme1737_pwm_group[ix]))) {
1966 goto exit_remove;
1967 }
1968 if (data->type != sch5027 && ix < 3 &&
1969 (err = sysfs_create_file(&dev->kobj,
1970 dme1737_pwm_misc_attr[ix]))) {
1971 goto exit_remove;
1972 }
1973 }
1974 }
1975
1976 /* Inform if the device is locked. Otherwise change the permissions of
1977 * selected attributes from read-only to read-writeable. */
1978 if (data->config & 0x02) {
1979 dev_info(dev, "Device is locked. Some attributes "
1980 "will be read-only.\n");
1981 } else {
1982 /* Change permissions of zone sysfs attributes */
1983 dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
1984 S_IRUGO | S_IWUSR);
1985
1986 /* Change permissions of misc sysfs attributes */
1987 if (data->type != sch5027) {
1988 dme1737_chmod_group(dev, &dme1737_misc_group,
1989 S_IRUGO | S_IWUSR);
1990 }
1991
1992 /* Change permissions of PWM sysfs attributes */
1993 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
1994 if (data->has_pwm & (1 << ix)) {
1995 dme1737_chmod_group(dev,
1996 &dme1737_pwm_chmod_group[ix],
1997 S_IRUGO | S_IWUSR);
1998 if (data->type != sch5027 && ix < 3) {
1999 dme1737_chmod_file(dev,
2000 dme1737_pwm_misc_attr[ix],
2001 S_IRUGO | S_IWUSR);
2002 }
2003 }
2004 }
2005
2006 /* Change permissions of pwm[1-3] if in manual mode */
2007 for (ix = 0; ix < 3; ix++) {
2008 if ((data->has_pwm & (1 << ix)) &&
2009 (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
2010 dme1737_chmod_file(dev,
2011 dme1737_pwm_chmod_attr[ix],
2012 S_IRUGO | S_IWUSR);
2013 }
2014 }
2015 }
2016
2017 return 0;
2018
2019 exit_remove:
2020 dme1737_remove_files(dev);
2021 exit:
2022 return err;
2023 }
2024
2025 static int dme1737_init_device(struct device *dev)
2026 {
2027 struct dme1737_data *data = dev_get_drvdata(dev);
2028 struct i2c_client *client = data->client;
2029 int ix;
2030 u8 reg;
2031
2032 /* Point to the right nominal voltages array */
2033 data->in_nominal = IN_NOMINAL(data->type);
2034
2035 data->config = dme1737_read(data, DME1737_REG_CONFIG);
2036 /* Inform if part is not monitoring/started */
2037 if (!(data->config & 0x01)) {
2038 if (!force_start) {
2039 dev_err(dev, "Device is not monitoring. "
2040 "Use the force_start load parameter to "
2041 "override.\n");
2042 return -EFAULT;
2043 }
2044
2045 /* Force monitoring */
2046 data->config |= 0x01;
2047 dme1737_write(data, DME1737_REG_CONFIG, data->config);
2048 }
2049 /* Inform if part is not ready */
2050 if (!(data->config & 0x04)) {
2051 dev_err(dev, "Device is not ready.\n");
2052 return -EFAULT;
2053 }
2054
2055 /* Determine which optional fan and pwm features are enabled/present */
2056 if (client) { /* I2C chip */
2057 data->config2 = dme1737_read(data, DME1737_REG_CONFIG2);
2058 /* Check if optional fan3 input is enabled */
2059 if (data->config2 & 0x04) {
2060 data->has_fan |= (1 << 2);
2061 }
2062
2063 /* Fan4 and pwm3 are only available if the client's I2C address
2064 * is the default 0x2e. Otherwise the I/Os associated with
2065 * these functions are used for addr enable/select. */
2066 if (client->addr == 0x2e) {
2067 data->has_fan |= (1 << 3);
2068 data->has_pwm |= (1 << 2);
2069 }
2070
2071 /* Determine which of the optional fan[5-6] and pwm[5-6]
2072 * features are enabled. For this, we need to query the runtime
2073 * registers through the Super-IO LPC interface. Try both
2074 * config ports 0x2e and 0x4e. */
2075 if (dme1737_i2c_get_features(0x2e, data) &&
2076 dme1737_i2c_get_features(0x4e, data)) {
2077 dev_warn(dev, "Failed to query Super-IO for optional "
2078 "features.\n");
2079 }
2080 } else { /* ISA chip */
2081 /* Fan3 and pwm3 are always available. Fan[4-5] and pwm[5-6]
2082 * don't exist in the ISA chip. */
2083 data->has_fan |= (1 << 2);
2084 data->has_pwm |= (1 << 2);
2085 }
2086
2087 /* Fan1, fan2, pwm1, and pwm2 are always present */
2088 data->has_fan |= 0x03;
2089 data->has_pwm |= 0x03;
2090
2091 dev_info(dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, "
2092 "fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
2093 (data->has_pwm & (1 << 2)) ? "yes" : "no",
2094 (data->has_pwm & (1 << 4)) ? "yes" : "no",
2095 (data->has_pwm & (1 << 5)) ? "yes" : "no",
2096 (data->has_fan & (1 << 2)) ? "yes" : "no",
2097 (data->has_fan & (1 << 3)) ? "yes" : "no",
2098 (data->has_fan & (1 << 4)) ? "yes" : "no",
2099 (data->has_fan & (1 << 5)) ? "yes" : "no");
2100
2101 reg = dme1737_read(data, DME1737_REG_TACH_PWM);
2102 /* Inform if fan-to-pwm mapping differs from the default */
2103 if (client && reg != 0xa4) { /* I2C chip */
2104 dev_warn(dev, "Non-standard fan to pwm mapping: "
2105 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, "
2106 "fan4->pwm%d. Please report to the driver "
2107 "maintainer.\n",
2108 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2109 ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1);
2110 } else if (!client && reg != 0x24) { /* ISA chip */
2111 dev_warn(dev, "Non-standard fan to pwm mapping: "
2112 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. "
2113 "Please report to the driver maintainer.\n",
2114 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2115 ((reg >> 4) & 0x03) + 1);
2116 }
2117
2118 /* Switch pwm[1-3] to manual mode if they are currently disabled and
2119 * set the duty-cycles to 0% (which is identical to the PWMs being
2120 * disabled). */
2121 if (!(data->config & 0x02)) {
2122 for (ix = 0; ix < 3; ix++) {
2123 data->pwm_config[ix] = dme1737_read(data,
2124 DME1737_REG_PWM_CONFIG(ix));
2125 if ((data->has_pwm & (1 << ix)) &&
2126 (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
2127 dev_info(dev, "Switching pwm%d to "
2128 "manual mode.\n", ix + 1);
2129 data->pwm_config[ix] = PWM_EN_TO_REG(1,
2130 data->pwm_config[ix]);
2131 dme1737_write(data, DME1737_REG_PWM(ix), 0);
2132 dme1737_write(data,
2133 DME1737_REG_PWM_CONFIG(ix),
2134 data->pwm_config[ix]);
2135 }
2136 }
2137 }
2138
2139 /* Initialize the default PWM auto channels zone (acz) assignments */
2140 data->pwm_acz[0] = 1; /* pwm1 -> zone1 */
2141 data->pwm_acz[1] = 2; /* pwm2 -> zone2 */
2142 data->pwm_acz[2] = 4; /* pwm3 -> zone3 */
2143
2144 /* Set VRM */
2145 if (data->type == dme1737) {
2146 data->vrm = vid_which_vrm();
2147 }
2148
2149 return 0;
2150 }
2151
2152 /* ---------------------------------------------------------------------
2153 * I2C device detection and registration
2154 * --------------------------------------------------------------------- */
2155
2156 static struct i2c_driver dme1737_i2c_driver;
2157
2158 static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
2159 {
2160 int err = 0, reg;
2161 u16 addr;
2162
2163 dme1737_sio_enter(sio_cip);
2164
2165 /* Check device ID
2166 * The DME1737 can return either 0x78 or 0x77 as its device ID.
2167 * The SCH5027 returns 0x89 as its device ID. */
2168 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2169 if (!(reg == 0x77 || reg == 0x78 || reg == 0x89)) {
2170 err = -ENODEV;
2171 goto exit;
2172 }
2173
2174 /* Select logical device A (runtime registers) */
2175 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2176
2177 /* Get the base address of the runtime registers */
2178 if (!(addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2179 dme1737_sio_inb(sio_cip, 0x61))) {
2180 err = -ENODEV;
2181 goto exit;
2182 }
2183
2184 /* Read the runtime registers to determine which optional features
2185 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
2186 * to '10' if the respective feature is enabled. */
2187 if ((inb(addr + 0x43) & 0x0c) == 0x08) { /* fan6 */
2188 data->has_fan |= (1 << 5);
2189 }
2190 if ((inb(addr + 0x44) & 0x0c) == 0x08) { /* pwm6 */
2191 data->has_pwm |= (1 << 5);
2192 }
2193 if ((inb(addr + 0x45) & 0x0c) == 0x08) { /* fan5 */
2194 data->has_fan |= (1 << 4);
2195 }
2196 if ((inb(addr + 0x46) & 0x0c) == 0x08) { /* pwm5 */
2197 data->has_pwm |= (1 << 4);
2198 }
2199
2200 exit:
2201 dme1737_sio_exit(sio_cip);
2202
2203 return err;
2204 }
2205
2206 /* Return 0 if detection is successful, -ENODEV otherwise */
2207 static int dme1737_i2c_detect(struct i2c_client *client,
2208 struct i2c_board_info *info)
2209 {
2210 struct i2c_adapter *adapter = client->adapter;
2211 struct device *dev = &adapter->dev;
2212 u8 company, verstep = 0;
2213 const char *name;
2214
2215 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
2216 return -ENODEV;
2217 }
2218
2219 company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY);
2220 verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP);
2221
2222 if (company == DME1737_COMPANY_SMSC &&
2223 verstep == SCH5027_VERSTEP) {
2224 name = "sch5027";
2225
2226 } else if (company == DME1737_COMPANY_SMSC &&
2227 (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
2228 name = "dme1737";
2229 } else {
2230 return -ENODEV;
2231 }
2232
2233 dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n",
2234 verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737",
2235 client->addr, verstep);
2236 strlcpy(info->type, name, I2C_NAME_SIZE);
2237
2238 return 0;
2239 }
2240
2241 static int dme1737_i2c_probe(struct i2c_client *client,
2242 const struct i2c_device_id *id)
2243 {
2244 struct dme1737_data *data;
2245 struct device *dev = &client->dev;
2246 int err;
2247
2248 data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
2249 if (!data) {
2250 err = -ENOMEM;
2251 goto exit;
2252 }
2253
2254 i2c_set_clientdata(client, data);
2255 data->type = id->driver_data;
2256 data->client = client;
2257 data->name = client->name;
2258 mutex_init(&data->update_lock);
2259
2260 /* Initialize the DME1737 chip */
2261 if ((err = dme1737_init_device(dev))) {
2262 dev_err(dev, "Failed to initialize device.\n");
2263 goto exit_kfree;
2264 }
2265
2266 /* Create sysfs files */
2267 if ((err = dme1737_create_files(dev))) {
2268 dev_err(dev, "Failed to create sysfs files.\n");
2269 goto exit_kfree;
2270 }
2271
2272 /* Register device */
2273 data->hwmon_dev = hwmon_device_register(dev);
2274 if (IS_ERR(data->hwmon_dev)) {
2275 dev_err(dev, "Failed to register device.\n");
2276 err = PTR_ERR(data->hwmon_dev);
2277 goto exit_remove;
2278 }
2279
2280 return 0;
2281
2282 exit_remove:
2283 dme1737_remove_files(dev);
2284 exit_kfree:
2285 kfree(data);
2286 exit:
2287 return err;
2288 }
2289
2290 static int dme1737_i2c_remove(struct i2c_client *client)
2291 {
2292 struct dme1737_data *data = i2c_get_clientdata(client);
2293
2294 hwmon_device_unregister(data->hwmon_dev);
2295 dme1737_remove_files(&client->dev);
2296
2297 kfree(data);
2298 return 0;
2299 }
2300
2301 static const struct i2c_device_id dme1737_id[] = {
2302 { "dme1737", dme1737 },
2303 { "sch5027", sch5027 },
2304 { }
2305 };
2306 MODULE_DEVICE_TABLE(i2c, dme1737_id);
2307
2308 static struct i2c_driver dme1737_i2c_driver = {
2309 .class = I2C_CLASS_HWMON,
2310 .driver = {
2311 .name = "dme1737",
2312 },
2313 .probe = dme1737_i2c_probe,
2314 .remove = dme1737_i2c_remove,
2315 .id_table = dme1737_id,
2316 .detect = dme1737_i2c_detect,
2317 .address_list = normal_i2c,
2318 };
2319
2320 /* ---------------------------------------------------------------------
2321 * ISA device detection and registration
2322 * --------------------------------------------------------------------- */
2323
2324 static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
2325 {
2326 int err = 0, reg;
2327 unsigned short base_addr;
2328
2329 dme1737_sio_enter(sio_cip);
2330
2331 /* Check device ID
2332 * We currently know about SCH3112 (0x7c), SCH3114 (0x7d), and
2333 * SCH3116 (0x7f). */
2334 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2335 if (!(reg == 0x7c || reg == 0x7d || reg == 0x7f)) {
2336 err = -ENODEV;
2337 goto exit;
2338 }
2339
2340 /* Select logical device A (runtime registers) */
2341 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2342
2343 /* Get the base address of the runtime registers */
2344 if (!(base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2345 dme1737_sio_inb(sio_cip, 0x61))) {
2346 printk(KERN_ERR "dme1737: Base address not set.\n");
2347 err = -ENODEV;
2348 goto exit;
2349 }
2350
2351 /* Access to the hwmon registers is through an index/data register
2352 * pair located at offset 0x70/0x71. */
2353 *addr = base_addr + 0x70;
2354
2355 exit:
2356 dme1737_sio_exit(sio_cip);
2357 return err;
2358 }
2359
2360 static int __init dme1737_isa_device_add(unsigned short addr)
2361 {
2362 struct resource res = {
2363 .start = addr,
2364 .end = addr + DME1737_EXTENT - 1,
2365 .name = "dme1737",
2366 .flags = IORESOURCE_IO,
2367 };
2368 int err;
2369
2370 err = acpi_check_resource_conflict(&res);
2371 if (err)
2372 goto exit;
2373
2374 if (!(pdev = platform_device_alloc("dme1737", addr))) {
2375 printk(KERN_ERR "dme1737: Failed to allocate device.\n");
2376 err = -ENOMEM;
2377 goto exit;
2378 }
2379
2380 if ((err = platform_device_add_resources(pdev, &res, 1))) {
2381 printk(KERN_ERR "dme1737: Failed to add device resource "
2382 "(err = %d).\n", err);
2383 goto exit_device_put;
2384 }
2385
2386 if ((err = platform_device_add(pdev))) {
2387 printk(KERN_ERR "dme1737: Failed to add device (err = %d).\n",
2388 err);
2389 goto exit_device_put;
2390 }
2391
2392 return 0;
2393
2394 exit_device_put:
2395 platform_device_put(pdev);
2396 pdev = NULL;
2397 exit:
2398 return err;
2399 }
2400
2401 static int __devinit dme1737_isa_probe(struct platform_device *pdev)
2402 {
2403 u8 company, device;
2404 struct resource *res;
2405 struct dme1737_data *data;
2406 struct device *dev = &pdev->dev;
2407 int err;
2408
2409 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2410 if (!request_region(res->start, DME1737_EXTENT, "dme1737")) {
2411 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
2412 (unsigned short)res->start,
2413 (unsigned short)res->start + DME1737_EXTENT - 1);
2414 err = -EBUSY;
2415 goto exit;
2416 }
2417
2418 if (!(data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL))) {
2419 err = -ENOMEM;
2420 goto exit_release_region;
2421 }
2422
2423 data->addr = res->start;
2424 platform_set_drvdata(pdev, data);
2425
2426 /* Skip chip detection if module is loaded with force_id parameter */
2427 if (!force_id) {
2428 company = dme1737_read(data, DME1737_REG_COMPANY);
2429 device = dme1737_read(data, DME1737_REG_DEVICE);
2430
2431 if (!((company == DME1737_COMPANY_SMSC) &&
2432 (device == SCH311X_DEVICE))) {
2433 err = -ENODEV;
2434 goto exit_kfree;
2435 }
2436 }
2437 data->type = sch311x;
2438
2439 /* Fill in the remaining client fields and initialize the mutex */
2440 data->name = "sch311x";
2441 mutex_init(&data->update_lock);
2442
2443 dev_info(dev, "Found a SCH311x chip at 0x%04x\n", data->addr);
2444
2445 /* Initialize the chip */
2446 if ((err = dme1737_init_device(dev))) {
2447 dev_err(dev, "Failed to initialize device.\n");
2448 goto exit_kfree;
2449 }
2450
2451 /* Create sysfs files */
2452 if ((err = dme1737_create_files(dev))) {
2453 dev_err(dev, "Failed to create sysfs files.\n");
2454 goto exit_kfree;
2455 }
2456
2457 /* Register device */
2458 data->hwmon_dev = hwmon_device_register(dev);
2459 if (IS_ERR(data->hwmon_dev)) {
2460 dev_err(dev, "Failed to register device.\n");
2461 err = PTR_ERR(data->hwmon_dev);
2462 goto exit_remove_files;
2463 }
2464
2465 return 0;
2466
2467 exit_remove_files:
2468 dme1737_remove_files(dev);
2469 exit_kfree:
2470 platform_set_drvdata(pdev, NULL);
2471 kfree(data);
2472 exit_release_region:
2473 release_region(res->start, DME1737_EXTENT);
2474 exit:
2475 return err;
2476 }
2477
2478 static int __devexit dme1737_isa_remove(struct platform_device *pdev)
2479 {
2480 struct dme1737_data *data = platform_get_drvdata(pdev);
2481
2482 hwmon_device_unregister(data->hwmon_dev);
2483 dme1737_remove_files(&pdev->dev);
2484 release_region(data->addr, DME1737_EXTENT);
2485 platform_set_drvdata(pdev, NULL);
2486 kfree(data);
2487
2488 return 0;
2489 }
2490
2491 static struct platform_driver dme1737_isa_driver = {
2492 .driver = {
2493 .owner = THIS_MODULE,
2494 .name = "dme1737",
2495 },
2496 .probe = dme1737_isa_probe,
2497 .remove = __devexit_p(dme1737_isa_remove),
2498 };
2499
2500 /* ---------------------------------------------------------------------
2501 * Module initialization and cleanup
2502 * --------------------------------------------------------------------- */
2503
2504 static int __init dme1737_init(void)
2505 {
2506 int err;
2507 unsigned short addr;
2508
2509 if ((err = i2c_add_driver(&dme1737_i2c_driver))) {
2510 goto exit;
2511 }
2512
2513 if (dme1737_isa_detect(0x2e, &addr) &&
2514 dme1737_isa_detect(0x4e, &addr) &&
2515 (!probe_all_addr ||
2516 (dme1737_isa_detect(0x162e, &addr) &&
2517 dme1737_isa_detect(0x164e, &addr)))) {
2518 /* Return 0 if we didn't find an ISA device */
2519 return 0;
2520 }
2521
2522 if ((err = platform_driver_register(&dme1737_isa_driver))) {
2523 goto exit_del_i2c_driver;
2524 }
2525
2526 /* Sets global pdev as a side effect */
2527 if ((err = dme1737_isa_device_add(addr))) {
2528 goto exit_del_isa_driver;
2529 }
2530
2531 return 0;
2532
2533 exit_del_isa_driver:
2534 platform_driver_unregister(&dme1737_isa_driver);
2535 exit_del_i2c_driver:
2536 i2c_del_driver(&dme1737_i2c_driver);
2537 exit:
2538 return err;
2539 }
2540
2541 static void __exit dme1737_exit(void)
2542 {
2543 if (pdev) {
2544 platform_device_unregister(pdev);
2545 platform_driver_unregister(&dme1737_isa_driver);
2546 }
2547
2548 i2c_del_driver(&dme1737_i2c_driver);
2549 }
2550
2551 MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
2552 MODULE_DESCRIPTION("DME1737 sensors");
2553 MODULE_LICENSE("GPL");
2554
2555 module_init(dme1737_init);
2556 module_exit(dme1737_exit);
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