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perf buildid: Fix possible unterminated readlink() result buffer
[linux-2.6/linux-mips.git] / drivers / hwmon / dme1737.c
blobd9c592713919886a0300cc1b29929e6c20c5e32a
1 /*
2 * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027,
3 * and SCH5127 Super-I/O chips integrated hardware monitoring
4 * features.
5 * Copyright (c) 2007, 2008, 2009, 2010 Juerg Haefliger <juergh@gmail.com>
6 *
7 * This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access
8 * the chip registers if a DME1737, A8000, or SCH5027 is found and the ISA bus
9 * if a SCH311x or SCH5127 chip is found. Both types of chips have very
10 * similar hardware monitoring capabilities but differ in the way they can be
11 * accessed.
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/jiffies.h>
34 #include <linux/i2c.h>
35 #include <linux/platform_device.h>
36 #include <linux/hwmon.h>
37 #include <linux/hwmon-sysfs.h>
38 #include <linux/hwmon-vid.h>
39 #include <linux/err.h>
40 #include <linux/mutex.h>
41 #include <linux/acpi.h>
42 #include <linux/io.h>
43
44 /* ISA device, if found */
45 static struct platform_device *pdev;
46
47 /* Module load parameters */
48 static int force_start;
49 module_param(force_start, bool, 0);
50 MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs");
51
52 static unsigned short force_id;
53 module_param(force_id, ushort, 0);
54 MODULE_PARM_DESC(force_id, "Override the detected device ID");
55
56 static int probe_all_addr;
57 module_param(probe_all_addr, bool, 0);
58 MODULE_PARM_DESC(probe_all_addr, "Include probing of non-standard LPC "
59 "addresses");
60
61 /* Addresses to scan */
62 static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
63
64 enum chips { dme1737, sch5027, sch311x, sch5127 };
65
66 /* ---------------------------------------------------------------------
67 * Registers
68 *
69 * The sensors are defined as follows:
70 *
71 * Voltages Temperatures
72 * -------- ------------
73 * in0 +5VTR (+5V stdby) temp1 Remote diode 1
74 * in1 Vccp (proc core) temp2 Internal temp
75 * in2 VCC (internal +3.3V) temp3 Remote diode 2
76 * in3 +5V
77 * in4 +12V
78 * in5 VTR (+3.3V stby)
79 * in6 Vbat
80 * in7 Vtrip (sch5127 only)
81 *
82 * --------------------------------------------------------------------- */
83
84 /* Voltages (in) numbered 0-7 (ix) */
85 #define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) : \
86 (ix) < 7 ? 0x94 + (ix) : \
87 0x1f)
88 #define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \
89 : 0x91 + (ix) * 2)
90 #define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \
91 : 0x92 + (ix) * 2)
92
93 /* Temperatures (temp) numbered 0-2 (ix) */
94 #define DME1737_REG_TEMP(ix) (0x25 + (ix))
95 #define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2)
96 #define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2)
97 #define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \
98 : 0x1c + (ix))
99
100 /* Voltage and temperature LSBs
101 * The LSBs (4 bits each) are stored in 5 registers with the following layouts:
102 * IN_TEMP_LSB(0) = [in5, in6]
103 * IN_TEMP_LSB(1) = [temp3, temp1]
104 * IN_TEMP_LSB(2) = [in4, temp2]
105 * IN_TEMP_LSB(3) = [in3, in0]
106 * IN_TEMP_LSB(4) = [in2, in1]
107 * IN_TEMP_LSB(5) = [res, in7] */
108 #define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix))
109 static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5};
110 static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4};
111 static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
112 static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0};
113
114 /* Fans numbered 0-5 (ix) */
115 #define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \
116 : 0xa1 + (ix) * 2)
117 #define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \
118 : 0xa5 + (ix) * 2)
119 #define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \
120 : 0xb2 + (ix))
121 #define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */
122
123 /* PWMs numbered 0-2, 4-5 (ix) */
124 #define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \
125 : 0xa1 + (ix))
126 #define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */
127 #define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */
128 #define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \
129 : 0xa3 + (ix))
130 /* The layout of the ramp rate registers is different from the other pwm
131 * registers. The bits for the 3 PWMs are stored in 2 registers:
132 * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0]
133 * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0] */
134 #define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */
135
136 /* Thermal zones 0-2 */
137 #define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix))
138 #define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix))
139 /* The layout of the hysteresis registers is different from the other zone
140 * registers. The bits for the 3 zones are stored in 2 registers:
141 * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
142 * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES] */
143 #define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix))
144
145 /* Alarm registers and bit mapping
146 * The 3 8-bit alarm registers will be concatenated to a single 32-bit
147 * alarm value [0, ALARM3, ALARM2, ALARM1]. */
148 #define DME1737_REG_ALARM1 0x41
149 #define DME1737_REG_ALARM2 0x42
150 #define DME1737_REG_ALARM3 0x83
151 static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18};
152 static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
153 static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
154
155 /* Miscellaneous registers */
156 #define DME1737_REG_DEVICE 0x3d
157 #define DME1737_REG_COMPANY 0x3e
158 #define DME1737_REG_VERSTEP 0x3f
159 #define DME1737_REG_CONFIG 0x40
160 #define DME1737_REG_CONFIG2 0x7f
161 #define DME1737_REG_VID 0x43
162 #define DME1737_REG_TACH_PWM 0x81
163
164 /* ---------------------------------------------------------------------
165 * Misc defines
166 * --------------------------------------------------------------------- */
167
168 /* Chip identification */
169 #define DME1737_COMPANY_SMSC 0x5c
170 #define DME1737_VERSTEP 0x88
171 #define DME1737_VERSTEP_MASK 0xf8
172 #define SCH311X_DEVICE 0x8c
173 #define SCH5027_VERSTEP 0x69
174 #define SCH5127_DEVICE 0x8e
175
176 /* Device ID values (global configuration register index 0x20) */
177 #define DME1737_ID_1 0x77
178 #define DME1737_ID_2 0x78
179 #define SCH3112_ID 0x7c
180 #define SCH3114_ID 0x7d
181 #define SCH3116_ID 0x7f
182 #define SCH5027_ID 0x89
183 #define SCH5127_ID 0x86
184
185 /* Length of ISA address segment */
186 #define DME1737_EXTENT 2
187
188 /* chip-dependent features */
189 #define HAS_TEMP_OFFSET (1 << 0) /* bit 0 */
190 #define HAS_VID (1 << 1) /* bit 1 */
191 #define HAS_ZONE3 (1 << 2) /* bit 2 */
192 #define HAS_ZONE_HYST (1 << 3) /* bit 3 */
193 #define HAS_PWM_MIN (1 << 4) /* bit 4 */
194 #define HAS_FAN(ix) (1 << ((ix) + 5)) /* bits 5-10 */
195 #define HAS_PWM(ix) (1 << ((ix) + 11)) /* bits 11-16 */
196 #define HAS_IN7 (1 << 17) /* bit 17 */
197
198 /* ---------------------------------------------------------------------
199 * Data structures and manipulation thereof
200 * --------------------------------------------------------------------- */
201
202 struct dme1737_data {
203 struct i2c_client *client; /* for I2C devices only */
204 struct device *hwmon_dev;
205 const char *name;
206 unsigned int addr; /* for ISA devices only */
207
208 struct mutex update_lock;
209 int valid; /* !=0 if following fields are valid */
210 unsigned long last_update; /* in jiffies */
211 unsigned long last_vbat; /* in jiffies */
212 enum chips type;
213 const int *in_nominal; /* pointer to IN_NOMINAL array */
214
215 u8 vid;
216 u8 pwm_rr_en;
217 u32 has_features;
218
219 /* Register values */
220 u16 in[8];
221 u8 in_min[8];
222 u8 in_max[8];
223 s16 temp[3];
224 s8 temp_min[3];
225 s8 temp_max[3];
226 s8 temp_offset[3];
227 u8 config;
228 u8 config2;
229 u8 vrm;
230 u16 fan[6];
231 u16 fan_min[6];
232 u8 fan_max[2];
233 u8 fan_opt[6];
234 u8 pwm[6];
235 u8 pwm_min[3];
236 u8 pwm_config[3];
237 u8 pwm_acz[3];
238 u8 pwm_freq[6];
239 u8 pwm_rr[2];
240 u8 zone_low[3];
241 u8 zone_abs[3];
242 u8 zone_hyst[2];
243 u32 alarms;
244 };
245
246 /* Nominal voltage values */
247 static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
248 3300};
249 static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
250 3300};
251 static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
252 3300};
253 static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300,
254 3300, 1500};
255 #define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \
256 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \
257 (type) == sch5127 ? IN_NOMINAL_SCH5127 : \
258 IN_NOMINAL_DME1737)
259
260 /* Voltage input
261 * Voltage inputs have 16 bits resolution, limit values have 8 bits
262 * resolution. */
263 static inline int IN_FROM_REG(int reg, int nominal, int res)
264 {
265 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
266 }
267
268 static inline int IN_TO_REG(int val, int nominal)
269 {
270 return SENSORS_LIMIT((val * 192 + nominal / 2) / nominal, 0, 255);
271 }
272
273 /* Temperature input
274 * The register values represent temperatures in 2's complement notation from
275 * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit
276 * values have 8 bits resolution. */
277 static inline int TEMP_FROM_REG(int reg, int res)
278 {
279 return (reg * 1000) >> (res - 8);
280 }
281
282 static inline int TEMP_TO_REG(int val)
283 {
284 return SENSORS_LIMIT((val < 0 ? val - 500 : val + 500) / 1000,
285 -128, 127);
286 }
287
288 /* Temperature range */
289 static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
290 10000, 13333, 16000, 20000, 26666, 32000,
291 40000, 53333, 80000};
292
293 static inline int TEMP_RANGE_FROM_REG(int reg)
294 {
295 return TEMP_RANGE[(reg >> 4) & 0x0f];
296 }
297
298 static int TEMP_RANGE_TO_REG(int val, int reg)
299 {
300 int i;
301
302 for (i = 15; i > 0; i--) {
303 if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2) {
304 break;
305 }
306 }
307
308 return (reg & 0x0f) | (i << 4);
309 }
310
311 /* Temperature hysteresis
312 * Register layout:
313 * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
314 * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx] */
315 static inline int TEMP_HYST_FROM_REG(int reg, int ix)
316 {
317 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
318 }
319
320 static inline int TEMP_HYST_TO_REG(int val, int ix, int reg)
321 {
322 int hyst = SENSORS_LIMIT((val + 500) / 1000, 0, 15);
323
324 return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4);
325 }
326
327 /* Fan input RPM */
328 static inline int FAN_FROM_REG(int reg, int tpc)
329 {
330 if (tpc) {
331 return tpc * reg;
332 } else {
333 return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg;
334 }
335 }
336
337 static inline int FAN_TO_REG(int val, int tpc)
338 {
339 if (tpc) {
340 return SENSORS_LIMIT(val / tpc, 0, 0xffff);
341 } else {
342 return (val <= 0) ? 0xffff :
343 SENSORS_LIMIT(90000 * 60 / val, 0, 0xfffe);
344 }
345 }
346
347 /* Fan TPC (tach pulse count)
348 * Converts a register value to a TPC multiplier or returns 0 if the tachometer
349 * is configured in legacy (non-tpc) mode */
350 static inline int FAN_TPC_FROM_REG(int reg)
351 {
352 return (reg & 0x20) ? 0 : 60 >> (reg & 0x03);
353 }
354
355 /* Fan type
356 * The type of a fan is expressed in number of pulses-per-revolution that it
357 * emits */
358 static inline int FAN_TYPE_FROM_REG(int reg)
359 {
360 int edge = (reg >> 1) & 0x03;
361
362 return (edge > 0) ? 1 << (edge - 1) : 0;
363 }
364
365 static inline int FAN_TYPE_TO_REG(int val, int reg)
366 {
367 int edge = (val == 4) ? 3 : val;
368
369 return (reg & 0xf9) | (edge << 1);
370 }
371
372 /* Fan max RPM */
373 static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
374 0x11, 0x0f, 0x0e};
375
376 static int FAN_MAX_FROM_REG(int reg)
377 {
378 int i;
379
380 for (i = 10; i > 0; i--) {
381 if (reg == FAN_MAX[i]) {
382 break;
383 }
384 }
385
386 return 1000 + i * 500;
387 }
388
389 static int FAN_MAX_TO_REG(int val)
390 {
391 int i;
392
393 for (i = 10; i > 0; i--) {
394 if (val > (1000 + (i - 1) * 500)) {
395 break;
396 }
397 }
398
399 return FAN_MAX[i];
400 }
401
402 /* PWM enable
403 * Register to enable mapping:
404 * 000: 2 fan on zone 1 auto
405 * 001: 2 fan on zone 2 auto
406 * 010: 2 fan on zone 3 auto
407 * 011: 0 fan full on
408 * 100: -1 fan disabled
409 * 101: 2 fan on hottest of zones 2,3 auto
410 * 110: 2 fan on hottest of zones 1,2,3 auto
411 * 111: 1 fan in manual mode */
412 static inline int PWM_EN_FROM_REG(int reg)
413 {
414 static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1};
415
416 return en[(reg >> 5) & 0x07];
417 }
418
419 static inline int PWM_EN_TO_REG(int val, int reg)
420 {
421 int en = (val == 1) ? 7 : 3;
422
423 return (reg & 0x1f) | ((en & 0x07) << 5);
424 }
425
426 /* PWM auto channels zone
427 * Register to auto channels zone mapping (ACZ is a bitfield with bit x
428 * corresponding to zone x+1):
429 * 000: 001 fan on zone 1 auto
430 * 001: 010 fan on zone 2 auto
431 * 010: 100 fan on zone 3 auto
432 * 011: 000 fan full on
433 * 100: 000 fan disabled
434 * 101: 110 fan on hottest of zones 2,3 auto
435 * 110: 111 fan on hottest of zones 1,2,3 auto
436 * 111: 000 fan in manual mode */
437 static inline int PWM_ACZ_FROM_REG(int reg)
438 {
439 static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0};
440
441 return acz[(reg >> 5) & 0x07];
442 }
443
444 static inline int PWM_ACZ_TO_REG(int val, int reg)
445 {
446 int acz = (val == 4) ? 2 : val - 1;
447
448 return (reg & 0x1f) | ((acz & 0x07) << 5);
449 }
450
451 /* PWM frequency */
452 static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
453 15000, 20000, 30000, 25000, 0, 0, 0, 0};
454
455 static inline int PWM_FREQ_FROM_REG(int reg)
456 {
457 return PWM_FREQ[reg & 0x0f];
458 }
459
460 static int PWM_FREQ_TO_REG(int val, int reg)
461 {
462 int i;
463
464 /* the first two cases are special - stupid chip design! */
465 if (val > 27500) {
466 i = 10;
467 } else if (val > 22500) {
468 i = 11;
469 } else {
470 for (i = 9; i > 0; i--) {
471 if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2) {
472 break;
473 }
474 }
475 }
476
477 return (reg & 0xf0) | i;
478 }
479
480 /* PWM ramp rate
481 * Register layout:
482 * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0]
483 * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0] */
484 static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
485
486 static inline int PWM_RR_FROM_REG(int reg, int ix)
487 {
488 int rr = (ix == 1) ? reg >> 4 : reg;
489
490 return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0;
491 }
492
493 static int PWM_RR_TO_REG(int val, int ix, int reg)
494 {
495 int i;
496
497 for (i = 0; i < 7; i++) {
498 if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2) {
499 break;
500 }
501 }
502
503 return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i;
504 }
505
506 /* PWM ramp rate enable */
507 static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
508 {
509 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
510 }
511
512 static inline int PWM_RR_EN_TO_REG(int val, int ix, int reg)
513 {
514 int en = (ix == 1) ? 0x80 : 0x08;
515
516 return val ? reg | en : reg & ~en;
517 }
518
519 /* PWM min/off
520 * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for
521 * the register layout). */
522 static inline int PWM_OFF_FROM_REG(int reg, int ix)
523 {
524 return (reg >> (ix + 5)) & 0x01;
525 }
526
527 static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
528 {
529 return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5));
530 }
531
532 /* ---------------------------------------------------------------------
533 * Device I/O access
534 *
535 * ISA access is performed through an index/data register pair and needs to
536 * be protected by a mutex during runtime (not required for initialization).
537 * We use data->update_lock for this and need to ensure that we acquire it
538 * before calling dme1737_read or dme1737_write.
539 * --------------------------------------------------------------------- */
540
541 static u8 dme1737_read(const struct dme1737_data *data, u8 reg)
542 {
543 struct i2c_client *client = data->client;
544 s32 val;
545
546 if (client) { /* I2C device */
547 val = i2c_smbus_read_byte_data(client, reg);
548
549 if (val < 0) {
550 dev_warn(&client->dev, "Read from register "
551 "0x%02x failed! Please report to the driver "
552 "maintainer.\n", reg);
553 }
554 } else { /* ISA device */
555 outb(reg, data->addr);
556 val = inb(data->addr + 1);
557 }
558
559 return val;
560 }
561
562 static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val)
563 {
564 struct i2c_client *client = data->client;
565 s32 res = 0;
566
567 if (client) { /* I2C device */
568 res = i2c_smbus_write_byte_data(client, reg, val);
569
570 if (res < 0) {
571 dev_warn(&client->dev, "Write to register "
572 "0x%02x failed! Please report to the driver "
573 "maintainer.\n", reg);
574 }
575 } else { /* ISA device */
576 outb(reg, data->addr);
577 outb(val, data->addr + 1);
578 }
579
580 return res;
581 }
582
583 static struct dme1737_data *dme1737_update_device(struct device *dev)
584 {
585 struct dme1737_data *data = dev_get_drvdata(dev);
586 int ix;
587 u8 lsb[6];
588
589 mutex_lock(&data->update_lock);
590
591 /* Enable a Vbat monitoring cycle every 10 mins */
592 if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) {
593 dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data,
594 DME1737_REG_CONFIG) | 0x10);
595 data->last_vbat = jiffies;
596 }
597
598 /* Sample register contents every 1 sec */
599 if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
600 if (data->has_features & HAS_VID) {
601 data->vid = dme1737_read(data, DME1737_REG_VID) &
602 0x3f;
603 }
604
605 /* In (voltage) registers */
606 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
607 /* Voltage inputs are stored as 16 bit values even
608 * though they have only 12 bits resolution. This is
609 * to make it consistent with the temp inputs. */
610 if (ix == 7 && !(data->has_features & HAS_IN7)) {
611 continue;
612 }
613 data->in[ix] = dme1737_read(data,
614 DME1737_REG_IN(ix)) << 8;
615 data->in_min[ix] = dme1737_read(data,
616 DME1737_REG_IN_MIN(ix));
617 data->in_max[ix] = dme1737_read(data,
618 DME1737_REG_IN_MAX(ix));
619 }
620
621 /* Temp registers */
622 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
623 /* Temp inputs are stored as 16 bit values even
624 * though they have only 12 bits resolution. This is
625 * to take advantage of implicit conversions between
626 * register values (2's complement) and temp values
627 * (signed decimal). */
628 data->temp[ix] = dme1737_read(data,
629 DME1737_REG_TEMP(ix)) << 8;
630 data->temp_min[ix] = dme1737_read(data,
631 DME1737_REG_TEMP_MIN(ix));
632 data->temp_max[ix] = dme1737_read(data,
633 DME1737_REG_TEMP_MAX(ix));
634 if (data->has_features & HAS_TEMP_OFFSET) {
635 data->temp_offset[ix] = dme1737_read(data,
636 DME1737_REG_TEMP_OFFSET(ix));
637 }
638 }
639
640 /* In and temp LSB registers
641 * The LSBs are latched when the MSBs are read, so the order in
642 * which the registers are read (MSB first, then LSB) is
643 * important! */
644 for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) {
645 if (ix == 5 && !(data->has_features & HAS_IN7)) {
646 continue;
647 }
648 lsb[ix] = dme1737_read(data,
649 DME1737_REG_IN_TEMP_LSB(ix));
650 }
651 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
652 if (ix == 7 && !(data->has_features & HAS_IN7)) {
653 continue;
654 }
655 data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] <<
656 DME1737_REG_IN_LSB_SHL[ix]) & 0xf0;
657 }
658 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
659 data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] <<
660 DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0;
661 }
662
663 /* Fan registers */
664 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
665 /* Skip reading registers if optional fans are not
666 * present */
667 if (!(data->has_features & HAS_FAN(ix))) {
668 continue;
669 }
670 data->fan[ix] = dme1737_read(data,
671 DME1737_REG_FAN(ix));
672 data->fan[ix] |= dme1737_read(data,
673 DME1737_REG_FAN(ix) + 1) << 8;
674 data->fan_min[ix] = dme1737_read(data,
675 DME1737_REG_FAN_MIN(ix));
676 data->fan_min[ix] |= dme1737_read(data,
677 DME1737_REG_FAN_MIN(ix) + 1) << 8;
678 data->fan_opt[ix] = dme1737_read(data,
679 DME1737_REG_FAN_OPT(ix));
680 /* fan_max exists only for fan[5-6] */
681 if (ix > 3) {
682 data->fan_max[ix - 4] = dme1737_read(data,
683 DME1737_REG_FAN_MAX(ix));
684 }
685 }
686
687 /* PWM registers */
688 for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
689 /* Skip reading registers if optional PWMs are not
690 * present */
691 if (!(data->has_features & HAS_PWM(ix))) {
692 continue;
693 }
694 data->pwm[ix] = dme1737_read(data,
695 DME1737_REG_PWM(ix));
696 data->pwm_freq[ix] = dme1737_read(data,
697 DME1737_REG_PWM_FREQ(ix));
698 /* pwm_config and pwm_min exist only for pwm[1-3] */
699 if (ix < 3) {
700 data->pwm_config[ix] = dme1737_read(data,
701 DME1737_REG_PWM_CONFIG(ix));
702 data->pwm_min[ix] = dme1737_read(data,
703 DME1737_REG_PWM_MIN(ix));
704 }
705 }
706 for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) {
707 data->pwm_rr[ix] = dme1737_read(data,
708 DME1737_REG_PWM_RR(ix));
709 }
710
711 /* Thermal zone registers */
712 for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
713 /* Skip reading registers if zone3 is not present */
714 if ((ix == 2) && !(data->has_features & HAS_ZONE3)) {
715 continue;
716 }
717 /* sch5127 zone2 registers are special */
718 if ((ix == 1) && (data->type == sch5127)) {
719 data->zone_low[1] = dme1737_read(data,
720 DME1737_REG_ZONE_LOW(2));
721 data->zone_abs[1] = dme1737_read(data,
722 DME1737_REG_ZONE_ABS(2));
723 } else {
724 data->zone_low[ix] = dme1737_read(data,
725 DME1737_REG_ZONE_LOW(ix));
726 data->zone_abs[ix] = dme1737_read(data,
727 DME1737_REG_ZONE_ABS(ix));
728 }
729 }
730 if (data->has_features & HAS_ZONE_HYST) {
731 for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
732 data->zone_hyst[ix] = dme1737_read(data,
733 DME1737_REG_ZONE_HYST(ix));
734 }
735 }
736
737 /* Alarm registers */
738 data->alarms = dme1737_read(data,
739 DME1737_REG_ALARM1);
740 /* Bit 7 tells us if the other alarm registers are non-zero and
741 * therefore also need to be read */
742 if (data->alarms & 0x80) {
743 data->alarms |= dme1737_read(data,
744 DME1737_REG_ALARM2) << 8;
745 data->alarms |= dme1737_read(data,
746 DME1737_REG_ALARM3) << 16;
747 }
748
749 /* The ISA chips require explicit clearing of alarm bits.
750 * Don't worry, an alarm will come back if the condition
751 * that causes it still exists */
752 if (!data->client) {
753 if (data->alarms & 0xff0000) {
754 dme1737_write(data, DME1737_REG_ALARM3,
755 0xff);
756 }
757 if (data->alarms & 0xff00) {
758 dme1737_write(data, DME1737_REG_ALARM2,
759 0xff);
760 }
761 if (data->alarms & 0xff) {
762 dme1737_write(data, DME1737_REG_ALARM1,
763 0xff);
764 }
765 }
766
767 data->last_update = jiffies;
768 data->valid = 1;
769 }
770
771 mutex_unlock(&data->update_lock);
772
773 return data;
774 }
775
776 /* ---------------------------------------------------------------------
777 * Voltage sysfs attributes
778 * ix = [0-7]
779 * --------------------------------------------------------------------- */
780
781 #define SYS_IN_INPUT 0
782 #define SYS_IN_MIN 1
783 #define SYS_IN_MAX 2
784 #define SYS_IN_ALARM 3
785
786 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
787 char *buf)
788 {
789 struct dme1737_data *data = dme1737_update_device(dev);
790 struct sensor_device_attribute_2
791 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
792 int ix = sensor_attr_2->index;
793 int fn = sensor_attr_2->nr;
794 int res;
795
796 switch (fn) {
797 case SYS_IN_INPUT:
798 res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16);
799 break;
800 case SYS_IN_MIN:
801 res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8);
802 break;
803 case SYS_IN_MAX:
804 res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8);
805 break;
806 case SYS_IN_ALARM:
807 res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01;
808 break;
809 default:
810 res = 0;
811 dev_dbg(dev, "Unknown function %d.\n", fn);
812 }
813
814 return sprintf(buf, "%d\n", res);
815 }
816
817 static ssize_t set_in(struct device *dev, struct device_attribute *attr,
818 const char *buf, size_t count)
819 {
820 struct dme1737_data *data = dev_get_drvdata(dev);
821 struct sensor_device_attribute_2
822 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
823 int ix = sensor_attr_2->index;
824 int fn = sensor_attr_2->nr;
825 long val = simple_strtol(buf, NULL, 10);
826
827 mutex_lock(&data->update_lock);
828 switch (fn) {
829 case SYS_IN_MIN:
830 data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]);
831 dme1737_write(data, DME1737_REG_IN_MIN(ix),
832 data->in_min[ix]);
833 break;
834 case SYS_IN_MAX:
835 data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]);
836 dme1737_write(data, DME1737_REG_IN_MAX(ix),
837 data->in_max[ix]);
838 break;
839 default:
840 dev_dbg(dev, "Unknown function %d.\n", fn);
841 }
842 mutex_unlock(&data->update_lock);
843
844 return count;
845 }
846
847 /* ---------------------------------------------------------------------
848 * Temperature sysfs attributes
849 * ix = [0-2]
850 * --------------------------------------------------------------------- */
851
852 #define SYS_TEMP_INPUT 0
853 #define SYS_TEMP_MIN 1
854 #define SYS_TEMP_MAX 2
855 #define SYS_TEMP_OFFSET 3
856 #define SYS_TEMP_ALARM 4
857 #define SYS_TEMP_FAULT 5
858
859 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
860 char *buf)
861 {
862 struct dme1737_data *data = dme1737_update_device(dev);
863 struct sensor_device_attribute_2
864 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
865 int ix = sensor_attr_2->index;
866 int fn = sensor_attr_2->nr;
867 int res;
868
869 switch (fn) {
870 case SYS_TEMP_INPUT:
871 res = TEMP_FROM_REG(data->temp[ix], 16);
872 break;
873 case SYS_TEMP_MIN:
874 res = TEMP_FROM_REG(data->temp_min[ix], 8);
875 break;
876 case SYS_TEMP_MAX:
877 res = TEMP_FROM_REG(data->temp_max[ix], 8);
878 break;
879 case SYS_TEMP_OFFSET:
880 res = TEMP_FROM_REG(data->temp_offset[ix], 8);
881 break;
882 case SYS_TEMP_ALARM:
883 res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01;
884 break;
885 case SYS_TEMP_FAULT:
886 res = (((u16)data->temp[ix] & 0xff00) == 0x8000);
887 break;
888 default:
889 res = 0;
890 dev_dbg(dev, "Unknown function %d.\n", fn);
891 }
892
893 return sprintf(buf, "%d\n", res);
894 }
895
896 static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
897 const char *buf, size_t count)
898 {
899 struct dme1737_data *data = dev_get_drvdata(dev);
900 struct sensor_device_attribute_2
901 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
902 int ix = sensor_attr_2->index;
903 int fn = sensor_attr_2->nr;
904 long val = simple_strtol(buf, NULL, 10);
905
906 mutex_lock(&data->update_lock);
907 switch (fn) {
908 case SYS_TEMP_MIN:
909 data->temp_min[ix] = TEMP_TO_REG(val);
910 dme1737_write(data, DME1737_REG_TEMP_MIN(ix),
911 data->temp_min[ix]);
912 break;
913 case SYS_TEMP_MAX:
914 data->temp_max[ix] = TEMP_TO_REG(val);
915 dme1737_write(data, DME1737_REG_TEMP_MAX(ix),
916 data->temp_max[ix]);
917 break;
918 case SYS_TEMP_OFFSET:
919 data->temp_offset[ix] = TEMP_TO_REG(val);
920 dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix),
921 data->temp_offset[ix]);
922 break;
923 default:
924 dev_dbg(dev, "Unknown function %d.\n", fn);
925 }
926 mutex_unlock(&data->update_lock);
927
928 return count;
929 }
930
931 /* ---------------------------------------------------------------------
932 * Zone sysfs attributes
933 * ix = [0-2]
934 * --------------------------------------------------------------------- */
935
936 #define SYS_ZONE_AUTO_CHANNELS_TEMP 0
937 #define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1
938 #define SYS_ZONE_AUTO_POINT1_TEMP 2
939 #define SYS_ZONE_AUTO_POINT2_TEMP 3
940 #define SYS_ZONE_AUTO_POINT3_TEMP 4
941
942 static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
943 char *buf)
944 {
945 struct dme1737_data *data = dme1737_update_device(dev);
946 struct sensor_device_attribute_2
947 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
948 int ix = sensor_attr_2->index;
949 int fn = sensor_attr_2->nr;
950 int res;
951
952 switch (fn) {
953 case SYS_ZONE_AUTO_CHANNELS_TEMP:
954 /* check config2 for non-standard temp-to-zone mapping */
955 if ((ix == 1) && (data->config2 & 0x02)) {
956 res = 4;
957 } else {
958 res = 1 << ix;
959 }
960 break;
961 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
962 res = TEMP_FROM_REG(data->zone_low[ix], 8) -
963 TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix);
964 break;
965 case SYS_ZONE_AUTO_POINT1_TEMP:
966 res = TEMP_FROM_REG(data->zone_low[ix], 8);
967 break;
968 case SYS_ZONE_AUTO_POINT2_TEMP:
969 /* pwm_freq holds the temp range bits in the upper nibble */
970 res = TEMP_FROM_REG(data->zone_low[ix], 8) +
971 TEMP_RANGE_FROM_REG(data->pwm_freq[ix]);
972 break;
973 case SYS_ZONE_AUTO_POINT3_TEMP:
974 res = TEMP_FROM_REG(data->zone_abs[ix], 8);
975 break;
976 default:
977 res = 0;
978 dev_dbg(dev, "Unknown function %d.\n", fn);
979 }
980
981 return sprintf(buf, "%d\n", res);
982 }
983
984 static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
985 const char *buf, size_t count)
986 {
987 struct dme1737_data *data = dev_get_drvdata(dev);
988 struct sensor_device_attribute_2
989 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
990 int ix = sensor_attr_2->index;
991 int fn = sensor_attr_2->nr;
992 long val = simple_strtol(buf, NULL, 10);
993
994 mutex_lock(&data->update_lock);
995 switch (fn) {
996 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
997 /* Refresh the cache */
998 data->zone_low[ix] = dme1737_read(data,
999 DME1737_REG_ZONE_LOW(ix));
1000 /* Modify the temp hyst value */
1001 data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(
1002 TEMP_FROM_REG(data->zone_low[ix], 8) -
1003 val, ix, dme1737_read(data,
1004 DME1737_REG_ZONE_HYST(ix == 2)));
1005 dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2),
1006 data->zone_hyst[ix == 2]);
1007 break;
1008 case SYS_ZONE_AUTO_POINT1_TEMP:
1009 data->zone_low[ix] = TEMP_TO_REG(val);
1010 dme1737_write(data, DME1737_REG_ZONE_LOW(ix),
1011 data->zone_low[ix]);
1012 break;
1013 case SYS_ZONE_AUTO_POINT2_TEMP:
1014 /* Refresh the cache */
1015 data->zone_low[ix] = dme1737_read(data,
1016 DME1737_REG_ZONE_LOW(ix));
1017 /* Modify the temp range value (which is stored in the upper
1018 * nibble of the pwm_freq register) */
1019 data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val -
1020 TEMP_FROM_REG(data->zone_low[ix], 8),
1021 dme1737_read(data,
1022 DME1737_REG_PWM_FREQ(ix)));
1023 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1024 data->pwm_freq[ix]);
1025 break;
1026 case SYS_ZONE_AUTO_POINT3_TEMP:
1027 data->zone_abs[ix] = TEMP_TO_REG(val);
1028 dme1737_write(data, DME1737_REG_ZONE_ABS(ix),
1029 data->zone_abs[ix]);
1030 break;
1031 default:
1032 dev_dbg(dev, "Unknown function %d.\n", fn);
1033 }
1034 mutex_unlock(&data->update_lock);
1035
1036 return count;
1037 }
1038
1039 /* ---------------------------------------------------------------------
1040 * Fan sysfs attributes
1041 * ix = [0-5]
1042 * --------------------------------------------------------------------- */
1043
1044 #define SYS_FAN_INPUT 0
1045 #define SYS_FAN_MIN 1
1046 #define SYS_FAN_MAX 2
1047 #define SYS_FAN_ALARM 3
1048 #define SYS_FAN_TYPE 4
1049
1050 static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1051 char *buf)
1052 {
1053 struct dme1737_data *data = dme1737_update_device(dev);
1054 struct sensor_device_attribute_2
1055 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1056 int ix = sensor_attr_2->index;
1057 int fn = sensor_attr_2->nr;
1058 int res;
1059
1060 switch (fn) {
1061 case SYS_FAN_INPUT:
1062 res = FAN_FROM_REG(data->fan[ix],
1063 ix < 4 ? 0 :
1064 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1065 break;
1066 case SYS_FAN_MIN:
1067 res = FAN_FROM_REG(data->fan_min[ix],
1068 ix < 4 ? 0 :
1069 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1070 break;
1071 case SYS_FAN_MAX:
1072 /* only valid for fan[5-6] */
1073 res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]);
1074 break;
1075 case SYS_FAN_ALARM:
1076 res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01;
1077 break;
1078 case SYS_FAN_TYPE:
1079 /* only valid for fan[1-4] */
1080 res = FAN_TYPE_FROM_REG(data->fan_opt[ix]);
1081 break;
1082 default:
1083 res = 0;
1084 dev_dbg(dev, "Unknown function %d.\n", fn);
1085 }
1086
1087 return sprintf(buf, "%d\n", res);
1088 }
1089
1090 static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1091 const char *buf, size_t count)
1092 {
1093 struct dme1737_data *data = dev_get_drvdata(dev);
1094 struct sensor_device_attribute_2
1095 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1096 int ix = sensor_attr_2->index;
1097 int fn = sensor_attr_2->nr;
1098 long val = simple_strtol(buf, NULL, 10);
1099
1100 mutex_lock(&data->update_lock);
1101 switch (fn) {
1102 case SYS_FAN_MIN:
1103 if (ix < 4) {
1104 data->fan_min[ix] = FAN_TO_REG(val, 0);
1105 } else {
1106 /* Refresh the cache */
1107 data->fan_opt[ix] = dme1737_read(data,
1108 DME1737_REG_FAN_OPT(ix));
1109 /* Modify the fan min value */
1110 data->fan_min[ix] = FAN_TO_REG(val,
1111 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1112 }
1113 dme1737_write(data, DME1737_REG_FAN_MIN(ix),
1114 data->fan_min[ix] & 0xff);
1115 dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1,
1116 data->fan_min[ix] >> 8);
1117 break;
1118 case SYS_FAN_MAX:
1119 /* Only valid for fan[5-6] */
1120 data->fan_max[ix - 4] = FAN_MAX_TO_REG(val);
1121 dme1737_write(data, DME1737_REG_FAN_MAX(ix),
1122 data->fan_max[ix - 4]);
1123 break;
1124 case SYS_FAN_TYPE:
1125 /* Only valid for fan[1-4] */
1126 if (!(val == 1 || val == 2 || val == 4)) {
1127 count = -EINVAL;
1128 dev_warn(dev, "Fan type value %ld not "
1129 "supported. Choose one of 1, 2, or 4.\n",
1130 val);
1131 goto exit;
1132 }
1133 data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data,
1134 DME1737_REG_FAN_OPT(ix)));
1135 dme1737_write(data, DME1737_REG_FAN_OPT(ix),
1136 data->fan_opt[ix]);
1137 break;
1138 default:
1139 dev_dbg(dev, "Unknown function %d.\n", fn);
1140 }
1141 exit:
1142 mutex_unlock(&data->update_lock);
1143
1144 return count;
1145 }
1146
1147 /* ---------------------------------------------------------------------
1148 * PWM sysfs attributes
1149 * ix = [0-4]
1150 * --------------------------------------------------------------------- */
1151
1152 #define SYS_PWM 0
1153 #define SYS_PWM_FREQ 1
1154 #define SYS_PWM_ENABLE 2
1155 #define SYS_PWM_RAMP_RATE 3
1156 #define SYS_PWM_AUTO_CHANNELS_ZONE 4
1157 #define SYS_PWM_AUTO_PWM_MIN 5
1158 #define SYS_PWM_AUTO_POINT1_PWM 6
1159 #define SYS_PWM_AUTO_POINT2_PWM 7
1160
1161 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1162 char *buf)
1163 {
1164 struct dme1737_data *data = dme1737_update_device(dev);
1165 struct sensor_device_attribute_2
1166 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1167 int ix = sensor_attr_2->index;
1168 int fn = sensor_attr_2->nr;
1169 int res;
1170
1171 switch (fn) {
1172 case SYS_PWM:
1173 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0) {
1174 res = 255;
1175 } else {
1176 res = data->pwm[ix];
1177 }
1178 break;
1179 case SYS_PWM_FREQ:
1180 res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
1181 break;
1182 case SYS_PWM_ENABLE:
1183 if (ix >= 3) {
1184 res = 1; /* pwm[5-6] hard-wired to manual mode */
1185 } else {
1186 res = PWM_EN_FROM_REG(data->pwm_config[ix]);
1187 }
1188 break;
1189 case SYS_PWM_RAMP_RATE:
1190 /* Only valid for pwm[1-3] */
1191 res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix);
1192 break;
1193 case SYS_PWM_AUTO_CHANNELS_ZONE:
1194 /* Only valid for pwm[1-3] */
1195 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1196 res = PWM_ACZ_FROM_REG(data->pwm_config[ix]);
1197 } else {
1198 res = data->pwm_acz[ix];
1199 }
1200 break;
1201 case SYS_PWM_AUTO_PWM_MIN:
1202 /* Only valid for pwm[1-3] */
1203 if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix)) {
1204 res = data->pwm_min[ix];
1205 } else {
1206 res = 0;
1207 }
1208 break;
1209 case SYS_PWM_AUTO_POINT1_PWM:
1210 /* Only valid for pwm[1-3] */
1211 res = data->pwm_min[ix];
1212 break;
1213 case SYS_PWM_AUTO_POINT2_PWM:
1214 /* Only valid for pwm[1-3] */
1215 res = 255; /* hard-wired */
1216 break;
1217 default:
1218 res = 0;
1219 dev_dbg(dev, "Unknown function %d.\n", fn);
1220 }
1221
1222 return sprintf(buf, "%d\n", res);
1223 }
1224
1225 static struct attribute *dme1737_pwm_chmod_attr[];
1226 static void dme1737_chmod_file(struct device*, struct attribute*, mode_t);
1227
1228 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1229 const char *buf, size_t count)
1230 {
1231 struct dme1737_data *data = dev_get_drvdata(dev);
1232 struct sensor_device_attribute_2
1233 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1234 int ix = sensor_attr_2->index;
1235 int fn = sensor_attr_2->nr;
1236 long val = simple_strtol(buf, NULL, 10);
1237
1238 mutex_lock(&data->update_lock);
1239 switch (fn) {
1240 case SYS_PWM:
1241 data->pwm[ix] = SENSORS_LIMIT(val, 0, 255);
1242 dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]);
1243 break;
1244 case SYS_PWM_FREQ:
1245 data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data,
1246 DME1737_REG_PWM_FREQ(ix)));
1247 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1248 data->pwm_freq[ix]);
1249 break;
1250 case SYS_PWM_ENABLE:
1251 /* Only valid for pwm[1-3] */
1252 if (val < 0 || val > 2) {
1253 count = -EINVAL;
1254 dev_warn(dev, "PWM enable %ld not "
1255 "supported. Choose one of 0, 1, or 2.\n",
1256 val);
1257 goto exit;
1258 }
1259 /* Refresh the cache */
1260 data->pwm_config[ix] = dme1737_read(data,
1261 DME1737_REG_PWM_CONFIG(ix));
1262 if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) {
1263 /* Bail out if no change */
1264 goto exit;
1265 }
1266 /* Do some housekeeping if we are currently in auto mode */
1267 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1268 /* Save the current zone channel assignment */
1269 data->pwm_acz[ix] = PWM_ACZ_FROM_REG(
1270 data->pwm_config[ix]);
1271 /* Save the current ramp rate state and disable it */
1272 data->pwm_rr[ix > 0] = dme1737_read(data,
1273 DME1737_REG_PWM_RR(ix > 0));
1274 data->pwm_rr_en &= ~(1 << ix);
1275 if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) {
1276 data->pwm_rr_en |= (1 << ix);
1277 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix,
1278 data->pwm_rr[ix > 0]);
1279 dme1737_write(data,
1280 DME1737_REG_PWM_RR(ix > 0),
1281 data->pwm_rr[ix > 0]);
1282 }
1283 }
1284 /* Set the new PWM mode */
1285 switch (val) {
1286 case 0:
1287 /* Change permissions of pwm[ix] to read-only */
1288 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1289 S_IRUGO);
1290 /* Turn fan fully on */
1291 data->pwm_config[ix] = PWM_EN_TO_REG(0,
1292 data->pwm_config[ix]);
1293 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1294 data->pwm_config[ix]);
1295 break;
1296 case 1:
1297 /* Turn on manual mode */
1298 data->pwm_config[ix] = PWM_EN_TO_REG(1,
1299 data->pwm_config[ix]);
1300 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1301 data->pwm_config[ix]);
1302 /* Change permissions of pwm[ix] to read-writeable */
1303 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1304 S_IRUGO | S_IWUSR);
1305 break;
1306 case 2:
1307 /* Change permissions of pwm[ix] to read-only */
1308 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1309 S_IRUGO);
1310 /* Turn on auto mode using the saved zone channel
1311 * assignment */
1312 data->pwm_config[ix] = PWM_ACZ_TO_REG(
1313 data->pwm_acz[ix],
1314 data->pwm_config[ix]);
1315 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1316 data->pwm_config[ix]);
1317 /* Enable PWM ramp rate if previously enabled */
1318 if (data->pwm_rr_en & (1 << ix)) {
1319 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix,
1320 dme1737_read(data,
1321 DME1737_REG_PWM_RR(ix > 0)));
1322 dme1737_write(data,
1323 DME1737_REG_PWM_RR(ix > 0),
1324 data->pwm_rr[ix > 0]);
1325 }
1326 break;
1327 }
1328 break;
1329 case SYS_PWM_RAMP_RATE:
1330 /* Only valid for pwm[1-3] */
1331 /* Refresh the cache */
1332 data->pwm_config[ix] = dme1737_read(data,
1333 DME1737_REG_PWM_CONFIG(ix));
1334 data->pwm_rr[ix > 0] = dme1737_read(data,
1335 DME1737_REG_PWM_RR(ix > 0));
1336 /* Set the ramp rate value */
1337 if (val > 0) {
1338 data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix,
1339 data->pwm_rr[ix > 0]);
1340 }
1341 /* Enable/disable the feature only if the associated PWM
1342 * output is in automatic mode. */
1343 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1344 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix,
1345 data->pwm_rr[ix > 0]);
1346 }
1347 dme1737_write(data, DME1737_REG_PWM_RR(ix > 0),
1348 data->pwm_rr[ix > 0]);
1349 break;
1350 case SYS_PWM_AUTO_CHANNELS_ZONE:
1351 /* Only valid for pwm[1-3] */
1352 if (!(val == 1 || val == 2 || val == 4 ||
1353 val == 6 || val == 7)) {
1354 count = -EINVAL;
1355 dev_warn(dev, "PWM auto channels zone %ld "
1356 "not supported. Choose one of 1, 2, 4, 6, "
1357 "or 7.\n", val);
1358 goto exit;
1359 }
1360 /* Refresh the cache */
1361 data->pwm_config[ix] = dme1737_read(data,
1362 DME1737_REG_PWM_CONFIG(ix));
1363 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1364 /* PWM is already in auto mode so update the temp
1365 * channel assignment */
1366 data->pwm_config[ix] = PWM_ACZ_TO_REG(val,
1367 data->pwm_config[ix]);
1368 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1369 data->pwm_config[ix]);
1370 } else {
1371 /* PWM is not in auto mode so we save the temp
1372 * channel assignment for later use */
1373 data->pwm_acz[ix] = val;
1374 }
1375 break;
1376 case SYS_PWM_AUTO_PWM_MIN:
1377 /* Only valid for pwm[1-3] */
1378 /* Refresh the cache */
1379 data->pwm_min[ix] = dme1737_read(data,
1380 DME1737_REG_PWM_MIN(ix));
1381 /* There are only 2 values supported for the auto_pwm_min
1382 * value: 0 or auto_point1_pwm. So if the temperature drops
1383 * below the auto_point1_temp_hyst value, the fan either turns
1384 * off or runs at auto_point1_pwm duty-cycle. */
1385 if (val > ((data->pwm_min[ix] + 1) / 2)) {
1386 data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
1387 dme1737_read(data,
1388 DME1737_REG_PWM_RR(0)));
1389 } else {
1390 data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
1391 dme1737_read(data,
1392 DME1737_REG_PWM_RR(0)));
1393 }
1394 dme1737_write(data, DME1737_REG_PWM_RR(0),
1395 data->pwm_rr[0]);
1396 break;
1397 case SYS_PWM_AUTO_POINT1_PWM:
1398 /* Only valid for pwm[1-3] */
1399 data->pwm_min[ix] = SENSORS_LIMIT(val, 0, 255);
1400 dme1737_write(data, DME1737_REG_PWM_MIN(ix),
1401 data->pwm_min[ix]);
1402 break;
1403 default:
1404 dev_dbg(dev, "Unknown function %d.\n", fn);
1405 }
1406 exit:
1407 mutex_unlock(&data->update_lock);
1408
1409 return count;
1410 }
1411
1412 /* ---------------------------------------------------------------------
1413 * Miscellaneous sysfs attributes
1414 * --------------------------------------------------------------------- */
1415
1416 static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
1417 char *buf)
1418 {
1419 struct i2c_client *client = to_i2c_client(dev);
1420 struct dme1737_data *data = i2c_get_clientdata(client);
1421
1422 return sprintf(buf, "%d\n", data->vrm);
1423 }
1424
1425 static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
1426 const char *buf, size_t count)
1427 {
1428 struct dme1737_data *data = dev_get_drvdata(dev);
1429 long val = simple_strtol(buf, NULL, 10);
1430
1431 data->vrm = val;
1432 return count;
1433 }
1434
1435 static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
1436 char *buf)
1437 {
1438 struct dme1737_data *data = dme1737_update_device(dev);
1439
1440 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1441 }
1442
1443 static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1444 char *buf)
1445 {
1446 struct dme1737_data *data = dev_get_drvdata(dev);
1447
1448 return sprintf(buf, "%s\n", data->name);
1449 }
1450
1451 /* ---------------------------------------------------------------------
1452 * Sysfs device attribute defines and structs
1453 * --------------------------------------------------------------------- */
1454
1455 /* Voltages 0-7 */
1456
1457 #define SENSOR_DEVICE_ATTR_IN(ix) \
1458 static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
1459 show_in, NULL, SYS_IN_INPUT, ix); \
1460 static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
1461 show_in, set_in, SYS_IN_MIN, ix); \
1462 static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
1463 show_in, set_in, SYS_IN_MAX, ix); \
1464 static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
1465 show_in, NULL, SYS_IN_ALARM, ix)
1466
1467 SENSOR_DEVICE_ATTR_IN(0);
1468 SENSOR_DEVICE_ATTR_IN(1);
1469 SENSOR_DEVICE_ATTR_IN(2);
1470 SENSOR_DEVICE_ATTR_IN(3);
1471 SENSOR_DEVICE_ATTR_IN(4);
1472 SENSOR_DEVICE_ATTR_IN(5);
1473 SENSOR_DEVICE_ATTR_IN(6);
1474 SENSOR_DEVICE_ATTR_IN(7);
1475
1476 /* Temperatures 1-3 */
1477
1478 #define SENSOR_DEVICE_ATTR_TEMP(ix) \
1479 static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
1480 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
1481 static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
1482 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
1483 static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
1484 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
1485 static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
1486 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
1487 static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
1488 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
1489 static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
1490 show_temp, NULL, SYS_TEMP_FAULT, ix-1)
1491
1492 SENSOR_DEVICE_ATTR_TEMP(1);
1493 SENSOR_DEVICE_ATTR_TEMP(2);
1494 SENSOR_DEVICE_ATTR_TEMP(3);
1495
1496 /* Zones 1-3 */
1497
1498 #define SENSOR_DEVICE_ATTR_ZONE(ix) \
1499 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
1500 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
1501 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
1502 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
1503 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
1504 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
1505 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
1506 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
1507 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
1508 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
1509
1510 SENSOR_DEVICE_ATTR_ZONE(1);
1511 SENSOR_DEVICE_ATTR_ZONE(2);
1512 SENSOR_DEVICE_ATTR_ZONE(3);
1513
1514 /* Fans 1-4 */
1515
1516 #define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
1517 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1518 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1519 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1520 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1521 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1522 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1523 static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
1524 show_fan, set_fan, SYS_FAN_TYPE, ix-1)
1525
1526 SENSOR_DEVICE_ATTR_FAN_1TO4(1);
1527 SENSOR_DEVICE_ATTR_FAN_1TO4(2);
1528 SENSOR_DEVICE_ATTR_FAN_1TO4(3);
1529 SENSOR_DEVICE_ATTR_FAN_1TO4(4);
1530
1531 /* Fans 5-6 */
1532
1533 #define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
1534 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1535 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1536 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1537 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1538 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1539 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1540 static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
1541 show_fan, set_fan, SYS_FAN_MAX, ix-1)
1542
1543 SENSOR_DEVICE_ATTR_FAN_5TO6(5);
1544 SENSOR_DEVICE_ATTR_FAN_5TO6(6);
1545
1546 /* PWMs 1-3 */
1547
1548 #define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
1549 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1550 show_pwm, set_pwm, SYS_PWM, ix-1); \
1551 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1552 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1553 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1554 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
1555 static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
1556 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
1557 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
1558 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
1559 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
1560 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
1561 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
1562 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
1563 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
1564 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
1565
1566 SENSOR_DEVICE_ATTR_PWM_1TO3(1);
1567 SENSOR_DEVICE_ATTR_PWM_1TO3(2);
1568 SENSOR_DEVICE_ATTR_PWM_1TO3(3);
1569
1570 /* PWMs 5-6 */
1571
1572 #define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
1573 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1574 show_pwm, set_pwm, SYS_PWM, ix-1); \
1575 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1576 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1577 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1578 show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
1579
1580 SENSOR_DEVICE_ATTR_PWM_5TO6(5);
1581 SENSOR_DEVICE_ATTR_PWM_5TO6(6);
1582
1583 /* Misc */
1584
1585 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
1586 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1587 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */
1588
1589 /* This struct holds all the attributes that are always present and need to be
1590 * created unconditionally. The attributes that need modification of their
1591 * permissions are created read-only and write permissions are added or removed
1592 * on the fly when required */
1593 static struct attribute *dme1737_attr[] = {
1594 /* Voltages */
1595 &sensor_dev_attr_in0_input.dev_attr.attr,
1596 &sensor_dev_attr_in0_min.dev_attr.attr,
1597 &sensor_dev_attr_in0_max.dev_attr.attr,
1598 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1599 &sensor_dev_attr_in1_input.dev_attr.attr,
1600 &sensor_dev_attr_in1_min.dev_attr.attr,
1601 &sensor_dev_attr_in1_max.dev_attr.attr,
1602 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1603 &sensor_dev_attr_in2_input.dev_attr.attr,
1604 &sensor_dev_attr_in2_min.dev_attr.attr,
1605 &sensor_dev_attr_in2_max.dev_attr.attr,
1606 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1607 &sensor_dev_attr_in3_input.dev_attr.attr,
1608 &sensor_dev_attr_in3_min.dev_attr.attr,
1609 &sensor_dev_attr_in3_max.dev_attr.attr,
1610 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1611 &sensor_dev_attr_in4_input.dev_attr.attr,
1612 &sensor_dev_attr_in4_min.dev_attr.attr,
1613 &sensor_dev_attr_in4_max.dev_attr.attr,
1614 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1615 &sensor_dev_attr_in5_input.dev_attr.attr,
1616 &sensor_dev_attr_in5_min.dev_attr.attr,
1617 &sensor_dev_attr_in5_max.dev_attr.attr,
1618 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1619 &sensor_dev_attr_in6_input.dev_attr.attr,
1620 &sensor_dev_attr_in6_min.dev_attr.attr,
1621 &sensor_dev_attr_in6_max.dev_attr.attr,
1622 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1623 /* Temperatures */
1624 &sensor_dev_attr_temp1_input.dev_attr.attr,
1625 &sensor_dev_attr_temp1_min.dev_attr.attr,
1626 &sensor_dev_attr_temp1_max.dev_attr.attr,
1627 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1628 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1629 &sensor_dev_attr_temp2_input.dev_attr.attr,
1630 &sensor_dev_attr_temp2_min.dev_attr.attr,
1631 &sensor_dev_attr_temp2_max.dev_attr.attr,
1632 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1633 &sensor_dev_attr_temp2_fault.dev_attr.attr,
1634 &sensor_dev_attr_temp3_input.dev_attr.attr,
1635 &sensor_dev_attr_temp3_min.dev_attr.attr,
1636 &sensor_dev_attr_temp3_max.dev_attr.attr,
1637 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1638 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1639 /* Zones */
1640 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1641 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1642 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1643 &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr,
1644 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1645 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1646 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1647 &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
1648 NULL
1649 };
1650
1651 static const struct attribute_group dme1737_group = {
1652 .attrs = dme1737_attr,
1653 };
1654
1655 /* The following struct holds temp offset attributes, which are not available
1656 * in all chips. The following chips support them:
1657 * DME1737, SCH311x */
1658 static struct attribute *dme1737_temp_offset_attr[] = {
1659 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1660 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1661 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1662 NULL
1663 };
1664
1665 static const struct attribute_group dme1737_temp_offset_group = {
1666 .attrs = dme1737_temp_offset_attr,
1667 };
1668
1669 /* The following struct holds VID related attributes, which are not available
1670 * in all chips. The following chips support them:
1671 * DME1737 */
1672 static struct attribute *dme1737_vid_attr[] = {
1673 &dev_attr_vrm.attr,
1674 &dev_attr_cpu0_vid.attr,
1675 NULL
1676 };
1677
1678 static const struct attribute_group dme1737_vid_group = {
1679 .attrs = dme1737_vid_attr,
1680 };
1681
1682 /* The following struct holds temp zone 3 related attributes, which are not
1683 * available in all chips. The following chips support them:
1684 * DME1737, SCH311x, SCH5027 */
1685 static struct attribute *dme1737_zone3_attr[] = {
1686 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1687 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1688 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1689 &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
1690 NULL
1691 };
1692
1693 static const struct attribute_group dme1737_zone3_group = {
1694 .attrs = dme1737_zone3_attr,
1695 };
1696
1697
1698 /* The following struct holds temp zone hysteresis related attributes, which
1699 * are not available in all chips. The following chips support them:
1700 * DME1737, SCH311x */
1701 static struct attribute *dme1737_zone_hyst_attr[] = {
1702 &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
1703 &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
1704 &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
1705 NULL
1706 };
1707
1708 static const struct attribute_group dme1737_zone_hyst_group = {
1709 .attrs = dme1737_zone_hyst_attr,
1710 };
1711
1712 /* The following struct holds voltage in7 related attributes, which
1713 * are not available in all chips. The following chips support them:
1714 * SCH5127 */
1715 static struct attribute *dme1737_in7_attr[] = {
1716 &sensor_dev_attr_in7_input.dev_attr.attr,
1717 &sensor_dev_attr_in7_min.dev_attr.attr,
1718 &sensor_dev_attr_in7_max.dev_attr.attr,
1719 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1720 NULL
1721 };
1722
1723 static const struct attribute_group dme1737_in7_group = {
1724 .attrs = dme1737_in7_attr,
1725 };
1726
1727 /* The following structs hold the PWM attributes, some of which are optional.
1728 * Their creation depends on the chip configuration which is determined during
1729 * module load. */
1730 static struct attribute *dme1737_pwm1_attr[] = {
1731 &sensor_dev_attr_pwm1.dev_attr.attr,
1732 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1733 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1734 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1735 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1736 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1737 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1738 NULL
1739 };
1740 static struct attribute *dme1737_pwm2_attr[] = {
1741 &sensor_dev_attr_pwm2.dev_attr.attr,
1742 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1743 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1744 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1745 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1746 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1747 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1748 NULL
1749 };
1750 static struct attribute *dme1737_pwm3_attr[] = {
1751 &sensor_dev_attr_pwm3.dev_attr.attr,
1752 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1753 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1754 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1755 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1756 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1757 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1758 NULL
1759 };
1760 static struct attribute *dme1737_pwm5_attr[] = {
1761 &sensor_dev_attr_pwm5.dev_attr.attr,
1762 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1763 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
1764 NULL
1765 };
1766 static struct attribute *dme1737_pwm6_attr[] = {
1767 &sensor_dev_attr_pwm6.dev_attr.attr,
1768 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1769 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
1770 NULL
1771 };
1772
1773 static const struct attribute_group dme1737_pwm_group[] = {
1774 { .attrs = dme1737_pwm1_attr },
1775 { .attrs = dme1737_pwm2_attr },
1776 { .attrs = dme1737_pwm3_attr },
1777 { .attrs = NULL },
1778 { .attrs = dme1737_pwm5_attr },
1779 { .attrs = dme1737_pwm6_attr },
1780 };
1781
1782 /* The following struct holds auto PWM min attributes, which are not available
1783 * in all chips. Their creation depends on the chip type which is determined
1784 * during module load. */
1785 static struct attribute *dme1737_auto_pwm_min_attr[] = {
1786 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1787 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1788 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1789 };
1790
1791 /* The following structs hold the fan attributes, some of which are optional.
1792 * Their creation depends on the chip configuration which is determined during
1793 * module load. */
1794 static struct attribute *dme1737_fan1_attr[] = {
1795 &sensor_dev_attr_fan1_input.dev_attr.attr,
1796 &sensor_dev_attr_fan1_min.dev_attr.attr,
1797 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1798 &sensor_dev_attr_fan1_type.dev_attr.attr,
1799 NULL
1800 };
1801 static struct attribute *dme1737_fan2_attr[] = {
1802 &sensor_dev_attr_fan2_input.dev_attr.attr,
1803 &sensor_dev_attr_fan2_min.dev_attr.attr,
1804 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1805 &sensor_dev_attr_fan2_type.dev_attr.attr,
1806 NULL
1807 };
1808 static struct attribute *dme1737_fan3_attr[] = {
1809 &sensor_dev_attr_fan3_input.dev_attr.attr,
1810 &sensor_dev_attr_fan3_min.dev_attr.attr,
1811 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1812 &sensor_dev_attr_fan3_type.dev_attr.attr,
1813 NULL
1814 };
1815 static struct attribute *dme1737_fan4_attr[] = {
1816 &sensor_dev_attr_fan4_input.dev_attr.attr,
1817 &sensor_dev_attr_fan4_min.dev_attr.attr,
1818 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1819 &sensor_dev_attr_fan4_type.dev_attr.attr,
1820 NULL
1821 };
1822 static struct attribute *dme1737_fan5_attr[] = {
1823 &sensor_dev_attr_fan5_input.dev_attr.attr,
1824 &sensor_dev_attr_fan5_min.dev_attr.attr,
1825 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1826 &sensor_dev_attr_fan5_max.dev_attr.attr,
1827 NULL
1828 };
1829 static struct attribute *dme1737_fan6_attr[] = {
1830 &sensor_dev_attr_fan6_input.dev_attr.attr,
1831 &sensor_dev_attr_fan6_min.dev_attr.attr,
1832 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1833 &sensor_dev_attr_fan6_max.dev_attr.attr,
1834 NULL
1835 };
1836
1837 static const struct attribute_group dme1737_fan_group[] = {
1838 { .attrs = dme1737_fan1_attr },
1839 { .attrs = dme1737_fan2_attr },
1840 { .attrs = dme1737_fan3_attr },
1841 { .attrs = dme1737_fan4_attr },
1842 { .attrs = dme1737_fan5_attr },
1843 { .attrs = dme1737_fan6_attr },
1844 };
1845
1846 /* The permissions of the following zone attributes are changed to read-
1847 * writeable if the chip is *not* locked. Otherwise they stay read-only. */
1848 static struct attribute *dme1737_zone_chmod_attr[] = {
1849 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1850 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1851 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1852 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1853 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1854 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1855 NULL
1856 };
1857
1858 static const struct attribute_group dme1737_zone_chmod_group = {
1859 .attrs = dme1737_zone_chmod_attr,
1860 };
1861
1862
1863 /* The permissions of the following zone 3 attributes are changed to read-
1864 * writeable if the chip is *not* locked. Otherwise they stay read-only. */
1865 static struct attribute *dme1737_zone3_chmod_attr[] = {
1866 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1867 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1868 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1869 NULL
1870 };
1871
1872 static const struct attribute_group dme1737_zone3_chmod_group = {
1873 .attrs = dme1737_zone3_chmod_attr,
1874 };
1875
1876 /* The permissions of the following PWM attributes are changed to read-
1877 * writeable if the chip is *not* locked and the respective PWM is available.
1878 * Otherwise they stay read-only. */
1879 static struct attribute *dme1737_pwm1_chmod_attr[] = {
1880 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1881 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1882 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1883 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1884 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1885 NULL
1886 };
1887 static struct attribute *dme1737_pwm2_chmod_attr[] = {
1888 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1889 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1890 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1891 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1892 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1893 NULL
1894 };
1895 static struct attribute *dme1737_pwm3_chmod_attr[] = {
1896 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1897 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1898 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1899 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1900 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1901 NULL
1902 };
1903 static struct attribute *dme1737_pwm5_chmod_attr[] = {
1904 &sensor_dev_attr_pwm5.dev_attr.attr,
1905 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1906 NULL
1907 };
1908 static struct attribute *dme1737_pwm6_chmod_attr[] = {
1909 &sensor_dev_attr_pwm6.dev_attr.attr,
1910 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1911 NULL
1912 };
1913
1914 static const struct attribute_group dme1737_pwm_chmod_group[] = {
1915 { .attrs = dme1737_pwm1_chmod_attr },
1916 { .attrs = dme1737_pwm2_chmod_attr },
1917 { .attrs = dme1737_pwm3_chmod_attr },
1918 { .attrs = NULL },
1919 { .attrs = dme1737_pwm5_chmod_attr },
1920 { .attrs = dme1737_pwm6_chmod_attr },
1921 };
1922
1923 /* Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
1924 * chip is not locked. Otherwise they are read-only. */
1925 static struct attribute *dme1737_pwm_chmod_attr[] = {
1926 &sensor_dev_attr_pwm1.dev_attr.attr,
1927 &sensor_dev_attr_pwm2.dev_attr.attr,
1928 &sensor_dev_attr_pwm3.dev_attr.attr,
1929 };
1930
1931 /* ---------------------------------------------------------------------
1932 * Super-IO functions
1933 * --------------------------------------------------------------------- */
1934
1935 static inline void dme1737_sio_enter(int sio_cip)
1936 {
1937 outb(0x55, sio_cip);
1938 }
1939
1940 static inline void dme1737_sio_exit(int sio_cip)
1941 {
1942 outb(0xaa, sio_cip);
1943 }
1944
1945 static inline int dme1737_sio_inb(int sio_cip, int reg)
1946 {
1947 outb(reg, sio_cip);
1948 return inb(sio_cip + 1);
1949 }
1950
1951 static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
1952 {
1953 outb(reg, sio_cip);
1954 outb(val, sio_cip + 1);
1955 }
1956
1957 /* ---------------------------------------------------------------------
1958 * Device initialization
1959 * --------------------------------------------------------------------- */
1960
1961 static int dme1737_i2c_get_features(int, struct dme1737_data*);
1962
1963 static void dme1737_chmod_file(struct device *dev,
1964 struct attribute *attr, mode_t mode)
1965 {
1966 if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
1967 dev_warn(dev, "Failed to change permissions of %s.\n",
1968 attr->name);
1969 }
1970 }
1971
1972 static void dme1737_chmod_group(struct device *dev,
1973 const struct attribute_group *group,
1974 mode_t mode)
1975 {
1976 struct attribute **attr;
1977
1978 for (attr = group->attrs; *attr; attr++) {
1979 dme1737_chmod_file(dev, *attr, mode);
1980 }
1981 }
1982
1983 static void dme1737_remove_files(struct device *dev)
1984 {
1985 struct dme1737_data *data = dev_get_drvdata(dev);
1986 int ix;
1987
1988 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
1989 if (data->has_features & HAS_FAN(ix)) {
1990 sysfs_remove_group(&dev->kobj,
1991 &dme1737_fan_group[ix]);
1992 }
1993 }
1994
1995 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
1996 if (data->has_features & HAS_PWM(ix)) {
1997 sysfs_remove_group(&dev->kobj,
1998 &dme1737_pwm_group[ix]);
1999 if ((data->has_features & HAS_PWM_MIN) && ix < 3) {
2000 sysfs_remove_file(&dev->kobj,
2001 dme1737_auto_pwm_min_attr[ix]);
2002 }
2003 }
2004 }
2005
2006 if (data->has_features & HAS_TEMP_OFFSET) {
2007 sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group);
2008 }
2009 if (data->has_features & HAS_VID) {
2010 sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
2011 }
2012 if (data->has_features & HAS_ZONE3) {
2013 sysfs_remove_group(&dev->kobj, &dme1737_zone3_group);
2014 }
2015 if (data->has_features & HAS_ZONE_HYST) {
2016 sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group);
2017 }
2018 if (data->has_features & HAS_IN7) {
2019 sysfs_remove_group(&dev->kobj, &dme1737_in7_group);
2020 }
2021 sysfs_remove_group(&dev->kobj, &dme1737_group);
2022
2023 if (!data->client) {
2024 sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
2025 }
2026 }
2027
2028 static int dme1737_create_files(struct device *dev)
2029 {
2030 struct dme1737_data *data = dev_get_drvdata(dev);
2031 int err, ix;
2032
2033 /* Create a name attribute for ISA devices */
2034 if (!data->client) {
2035 err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr);
2036 if (err) {
2037 goto exit;
2038 }
2039 }
2040
2041 /* Create standard sysfs attributes */
2042 err = sysfs_create_group(&dev->kobj, &dme1737_group);
2043 if (err) {
2044 goto exit_remove;
2045 }
2046
2047 /* Create chip-dependent sysfs attributes */
2048 if (data->has_features & HAS_TEMP_OFFSET) {
2049 err = sysfs_create_group(&dev->kobj,
2050 &dme1737_temp_offset_group);
2051 if (err) {
2052 goto exit_remove;
2053 }
2054 }
2055 if (data->has_features & HAS_VID) {
2056 err = sysfs_create_group(&dev->kobj, &dme1737_vid_group);
2057 if (err) {
2058 goto exit_remove;
2059 }
2060 }
2061 if (data->has_features & HAS_ZONE3) {
2062 err = sysfs_create_group(&dev->kobj, &dme1737_zone3_group);
2063 if (err) {
2064 goto exit_remove;
2065 }
2066 }
2067 if (data->has_features & HAS_ZONE_HYST) {
2068 err = sysfs_create_group(&dev->kobj, &dme1737_zone_hyst_group);
2069 if (err) {
2070 goto exit_remove;
2071 }
2072 }
2073 if (data->has_features & HAS_IN7) {
2074 err = sysfs_create_group(&dev->kobj, &dme1737_in7_group);
2075 if (err) {
2076 goto exit_remove;
2077 }
2078 }
2079
2080 /* Create fan sysfs attributes */
2081 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
2082 if (data->has_features & HAS_FAN(ix)) {
2083 err = sysfs_create_group(&dev->kobj,
2084 &dme1737_fan_group[ix]);
2085 if (err) {
2086 goto exit_remove;
2087 }
2088 }
2089 }
2090
2091 /* Create PWM sysfs attributes */
2092 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
2093 if (data->has_features & HAS_PWM(ix)) {
2094 err = sysfs_create_group(&dev->kobj,
2095 &dme1737_pwm_group[ix]);
2096 if (err) {
2097 goto exit_remove;
2098 }
2099 if ((data->has_features & HAS_PWM_MIN) && (ix < 3)) {
2100 err = sysfs_create_file(&dev->kobj,
2101 dme1737_auto_pwm_min_attr[ix]);
2102 if (err) {
2103 goto exit_remove;
2104 }
2105 }
2106 }
2107 }
2108
2109 /* Inform if the device is locked. Otherwise change the permissions of
2110 * selected attributes from read-only to read-writeable. */
2111 if (data->config & 0x02) {
2112 dev_info(dev, "Device is locked. Some attributes "
2113 "will be read-only.\n");
2114 } else {
2115 /* Change permissions of zone sysfs attributes */
2116 dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
2117 S_IRUGO | S_IWUSR);
2118
2119 /* Change permissions of chip-dependent sysfs attributes */
2120 if (data->has_features & HAS_TEMP_OFFSET) {
2121 dme1737_chmod_group(dev, &dme1737_temp_offset_group,
2122 S_IRUGO | S_IWUSR);
2123 }
2124 if (data->has_features & HAS_ZONE3) {
2125 dme1737_chmod_group(dev, &dme1737_zone3_chmod_group,
2126 S_IRUGO | S_IWUSR);
2127 }
2128 if (data->has_features & HAS_ZONE_HYST) {
2129 dme1737_chmod_group(dev, &dme1737_zone_hyst_group,
2130 S_IRUGO | S_IWUSR);
2131 }
2132
2133 /* Change permissions of PWM sysfs attributes */
2134 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
2135 if (data->has_features & HAS_PWM(ix)) {
2136 dme1737_chmod_group(dev,
2137 &dme1737_pwm_chmod_group[ix],
2138 S_IRUGO | S_IWUSR);
2139 if ((data->has_features & HAS_PWM_MIN) &&
2140 ix < 3) {
2141 dme1737_chmod_file(dev,
2142 dme1737_auto_pwm_min_attr[ix],
2143 S_IRUGO | S_IWUSR);
2144 }
2145 }
2146 }
2147
2148 /* Change permissions of pwm[1-3] if in manual mode */
2149 for (ix = 0; ix < 3; ix++) {
2150 if ((data->has_features & HAS_PWM(ix)) &&
2151 (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
2152 dme1737_chmod_file(dev,
2153 dme1737_pwm_chmod_attr[ix],
2154 S_IRUGO | S_IWUSR);
2155 }
2156 }
2157 }
2158
2159 return 0;
2160
2161 exit_remove:
2162 dme1737_remove_files(dev);
2163 exit:
2164 return err;
2165 }
2166
2167 static int dme1737_init_device(struct device *dev)
2168 {
2169 struct dme1737_data *data = dev_get_drvdata(dev);
2170 struct i2c_client *client = data->client;
2171 int ix;
2172 u8 reg;
2173
2174 /* Point to the right nominal voltages array */
2175 data->in_nominal = IN_NOMINAL(data->type);
2176
2177 data->config = dme1737_read(data, DME1737_REG_CONFIG);
2178 /* Inform if part is not monitoring/started */
2179 if (!(data->config & 0x01)) {
2180 if (!force_start) {
2181 dev_err(dev, "Device is not monitoring. "
2182 "Use the force_start load parameter to "
2183 "override.\n");
2184 return -EFAULT;
2185 }
2186
2187 /* Force monitoring */
2188 data->config |= 0x01;
2189 dme1737_write(data, DME1737_REG_CONFIG, data->config);
2190 }
2191 /* Inform if part is not ready */
2192 if (!(data->config & 0x04)) {
2193 dev_err(dev, "Device is not ready.\n");
2194 return -EFAULT;
2195 }
2196
2197 /* Determine which optional fan and pwm features are enabled (only
2198 * valid for I2C devices) */
2199 if (client) { /* I2C chip */
2200 data->config2 = dme1737_read(data, DME1737_REG_CONFIG2);
2201 /* Check if optional fan3 input is enabled */
2202 if (data->config2 & 0x04) {
2203 data->has_features |= HAS_FAN(2);
2204 }
2205
2206 /* Fan4 and pwm3 are only available if the client's I2C address
2207 * is the default 0x2e. Otherwise the I/Os associated with
2208 * these functions are used for addr enable/select. */
2209 if (client->addr == 0x2e) {
2210 data->has_features |= HAS_FAN(3) | HAS_PWM(2);
2211 }
2212
2213 /* Determine which of the optional fan[5-6] and pwm[5-6]
2214 * features are enabled. For this, we need to query the runtime
2215 * registers through the Super-IO LPC interface. Try both
2216 * config ports 0x2e and 0x4e. */
2217 if (dme1737_i2c_get_features(0x2e, data) &&
2218 dme1737_i2c_get_features(0x4e, data)) {
2219 dev_warn(dev, "Failed to query Super-IO for optional "
2220 "features.\n");
2221 }
2222 }
2223
2224 /* Fan[1-2] and pwm[1-2] are present in all chips */
2225 data->has_features |= HAS_FAN(0) | HAS_FAN(1) | HAS_PWM(0) | HAS_PWM(1);
2226
2227 /* Chip-dependent features */
2228 switch (data->type) {
2229 case dme1737:
2230 data->has_features |= HAS_TEMP_OFFSET | HAS_VID | HAS_ZONE3 |
2231 HAS_ZONE_HYST | HAS_PWM_MIN;
2232 break;
2233 case sch311x:
2234 data->has_features |= HAS_TEMP_OFFSET | HAS_ZONE3 |
2235 HAS_ZONE_HYST | HAS_PWM_MIN | HAS_FAN(2) | HAS_PWM(2);
2236 break;
2237 case sch5027:
2238 data->has_features |= HAS_ZONE3;
2239 break;
2240 case sch5127:
2241 data->has_features |= HAS_FAN(2) | HAS_PWM(2) | HAS_IN7;
2242 break;
2243 default:
2244 break;
2245 }
2246
2247 dev_info(dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, "
2248 "fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
2249 (data->has_features & HAS_PWM(2)) ? "yes" : "no",
2250 (data->has_features & HAS_PWM(4)) ? "yes" : "no",
2251 (data->has_features & HAS_PWM(5)) ? "yes" : "no",
2252 (data->has_features & HAS_FAN(2)) ? "yes" : "no",
2253 (data->has_features & HAS_FAN(3)) ? "yes" : "no",
2254 (data->has_features & HAS_FAN(4)) ? "yes" : "no",
2255 (data->has_features & HAS_FAN(5)) ? "yes" : "no");
2256
2257 reg = dme1737_read(data, DME1737_REG_TACH_PWM);
2258 /* Inform if fan-to-pwm mapping differs from the default */
2259 if (client && reg != 0xa4) { /* I2C chip */
2260 dev_warn(dev, "Non-standard fan to pwm mapping: "
2261 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, "
2262 "fan4->pwm%d. Please report to the driver "
2263 "maintainer.\n",
2264 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2265 ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1);
2266 } else if (!client && reg != 0x24) { /* ISA chip */
2267 dev_warn(dev, "Non-standard fan to pwm mapping: "
2268 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. "
2269 "Please report to the driver maintainer.\n",
2270 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2271 ((reg >> 4) & 0x03) + 1);
2272 }
2273
2274 /* Switch pwm[1-3] to manual mode if they are currently disabled and
2275 * set the duty-cycles to 0% (which is identical to the PWMs being
2276 * disabled). */
2277 if (!(data->config & 0x02)) {
2278 for (ix = 0; ix < 3; ix++) {
2279 data->pwm_config[ix] = dme1737_read(data,
2280 DME1737_REG_PWM_CONFIG(ix));
2281 if ((data->has_features & HAS_PWM(ix)) &&
2282 (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
2283 dev_info(dev, "Switching pwm%d to "
2284 "manual mode.\n", ix + 1);
2285 data->pwm_config[ix] = PWM_EN_TO_REG(1,
2286 data->pwm_config[ix]);
2287 dme1737_write(data, DME1737_REG_PWM(ix), 0);
2288 dme1737_write(data,
2289 DME1737_REG_PWM_CONFIG(ix),
2290 data->pwm_config[ix]);
2291 }
2292 }
2293 }
2294
2295 /* Initialize the default PWM auto channels zone (acz) assignments */
2296 data->pwm_acz[0] = 1; /* pwm1 -> zone1 */
2297 data->pwm_acz[1] = 2; /* pwm2 -> zone2 */
2298 data->pwm_acz[2] = 4; /* pwm3 -> zone3 */
2299
2300 /* Set VRM */
2301 if (data->has_features & HAS_VID) {
2302 data->vrm = vid_which_vrm();
2303 }
2304
2305 return 0;
2306 }
2307
2308 /* ---------------------------------------------------------------------
2309 * I2C device detection and registration
2310 * --------------------------------------------------------------------- */
2311
2312 static struct i2c_driver dme1737_i2c_driver;
2313
2314 static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
2315 {
2316 int err = 0, reg;
2317 u16 addr;
2318
2319 dme1737_sio_enter(sio_cip);
2320
2321 /* Check device ID
2322 * We currently know about two kinds of DME1737 and SCH5027. */
2323 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2324 if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 ||
2325 reg == SCH5027_ID)) {
2326 err = -ENODEV;
2327 goto exit;
2328 }
2329
2330 /* Select logical device A (runtime registers) */
2331 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2332
2333 /* Get the base address of the runtime registers */
2334 addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2335 dme1737_sio_inb(sio_cip, 0x61);
2336 if (!addr) {
2337 err = -ENODEV;
2338 goto exit;
2339 }
2340
2341 /* Read the runtime registers to determine which optional features
2342 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
2343 * to '10' if the respective feature is enabled. */
2344 if ((inb(addr + 0x43) & 0x0c) == 0x08) { /* fan6 */
2345 data->has_features |= HAS_FAN(5);
2346 }
2347 if ((inb(addr + 0x44) & 0x0c) == 0x08) { /* pwm6 */
2348 data->has_features |= HAS_PWM(5);
2349 }
2350 if ((inb(addr + 0x45) & 0x0c) == 0x08) { /* fan5 */
2351 data->has_features |= HAS_FAN(4);
2352 }
2353 if ((inb(addr + 0x46) & 0x0c) == 0x08) { /* pwm5 */
2354 data->has_features |= HAS_PWM(4);
2355 }
2356
2357 exit:
2358 dme1737_sio_exit(sio_cip);
2359
2360 return err;
2361 }
2362
2363 /* Return 0 if detection is successful, -ENODEV otherwise */
2364 static int dme1737_i2c_detect(struct i2c_client *client,
2365 struct i2c_board_info *info)
2366 {
2367 struct i2c_adapter *adapter = client->adapter;
2368 struct device *dev = &adapter->dev;
2369 u8 company, verstep = 0;
2370 const char *name;
2371
2372 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
2373 return -ENODEV;
2374 }
2375
2376 company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY);
2377 verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP);
2378
2379 if (company == DME1737_COMPANY_SMSC &&
2380 verstep == SCH5027_VERSTEP) {
2381 name = "sch5027";
2382 } else if (company == DME1737_COMPANY_SMSC &&
2383 (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
2384 name = "dme1737";
2385 } else {
2386 return -ENODEV;
2387 }
2388
2389 dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n",
2390 verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737",
2391 client->addr, verstep);
2392 strlcpy(info->type, name, I2C_NAME_SIZE);
2393
2394 return 0;
2395 }
2396
2397 static int dme1737_i2c_probe(struct i2c_client *client,
2398 const struct i2c_device_id *id)
2399 {
2400 struct dme1737_data *data;
2401 struct device *dev = &client->dev;
2402 int err;
2403
2404 data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
2405 if (!data) {
2406 err = -ENOMEM;
2407 goto exit;
2408 }
2409
2410 i2c_set_clientdata(client, data);
2411 data->type = id->driver_data;
2412 data->client = client;
2413 data->name = client->name;
2414 mutex_init(&data->update_lock);
2415
2416 /* Initialize the DME1737 chip */
2417 err = dme1737_init_device(dev);
2418 if (err) {
2419 dev_err(dev, "Failed to initialize device.\n");
2420 goto exit_kfree;
2421 }
2422
2423 /* Create sysfs files */
2424 err = dme1737_create_files(dev);
2425 if (err) {
2426 dev_err(dev, "Failed to create sysfs files.\n");
2427 goto exit_kfree;
2428 }
2429
2430 /* Register device */
2431 data->hwmon_dev = hwmon_device_register(dev);
2432 if (IS_ERR(data->hwmon_dev)) {
2433 dev_err(dev, "Failed to register device.\n");
2434 err = PTR_ERR(data->hwmon_dev);
2435 goto exit_remove;
2436 }
2437
2438 return 0;
2439
2440 exit_remove:
2441 dme1737_remove_files(dev);
2442 exit_kfree:
2443 kfree(data);
2444 exit:
2445 return err;
2446 }
2447
2448 static int dme1737_i2c_remove(struct i2c_client *client)
2449 {
2450 struct dme1737_data *data = i2c_get_clientdata(client);
2451
2452 hwmon_device_unregister(data->hwmon_dev);
2453 dme1737_remove_files(&client->dev);
2454
2455 kfree(data);
2456 return 0;
2457 }
2458
2459 static const struct i2c_device_id dme1737_id[] = {
2460 { "dme1737", dme1737 },
2461 { "sch5027", sch5027 },
2462 { }
2463 };
2464 MODULE_DEVICE_TABLE(i2c, dme1737_id);
2465
2466 static struct i2c_driver dme1737_i2c_driver = {
2467 .class = I2C_CLASS_HWMON,
2468 .driver = {
2469 .name = "dme1737",
2470 },
2471 .probe = dme1737_i2c_probe,
2472 .remove = dme1737_i2c_remove,
2473 .id_table = dme1737_id,
2474 .detect = dme1737_i2c_detect,
2475 .address_list = normal_i2c,
2476 };
2477
2478 /* ---------------------------------------------------------------------
2479 * ISA device detection and registration
2480 * --------------------------------------------------------------------- */
2481
2482 static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
2483 {
2484 int err = 0, reg;
2485 unsigned short base_addr;
2486
2487 dme1737_sio_enter(sio_cip);
2488
2489 /* Check device ID
2490 * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127 */
2491 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2492 if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID ||
2493 reg == SCH5127_ID)) {
2494 err = -ENODEV;
2495 goto exit;
2496 }
2497
2498 /* Select logical device A (runtime registers) */
2499 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2500
2501 /* Get the base address of the runtime registers */
2502 base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2503 dme1737_sio_inb(sio_cip, 0x61);
2504 if (!base_addr) {
2505 pr_err("Base address not set\n");
2506 err = -ENODEV;
2507 goto exit;
2508 }
2509
2510 /* Access to the hwmon registers is through an index/data register
2511 * pair located at offset 0x70/0x71. */
2512 *addr = base_addr + 0x70;
2513
2514 exit:
2515 dme1737_sio_exit(sio_cip);
2516 return err;
2517 }
2518
2519 static int __init dme1737_isa_device_add(unsigned short addr)
2520 {
2521 struct resource res = {
2522 .start = addr,
2523 .end = addr + DME1737_EXTENT - 1,
2524 .name = "dme1737",
2525 .flags = IORESOURCE_IO,
2526 };
2527 int err;
2528
2529 err = acpi_check_resource_conflict(&res);
2530 if (err)
2531 goto exit;
2532
2533 pdev = platform_device_alloc("dme1737", addr);
2534 if (!pdev) {
2535 pr_err("Failed to allocate device\n");
2536 err = -ENOMEM;
2537 goto exit;
2538 }
2539
2540 err = platform_device_add_resources(pdev, &res, 1);
2541 if (err) {
2542 pr_err("Failed to add device resource (err = %d)\n", err);
2543 goto exit_device_put;
2544 }
2545
2546 err = platform_device_add(pdev);
2547 if (err) {
2548 pr_err("Failed to add device (err = %d)\n", err);
2549 goto exit_device_put;
2550 }
2551
2552 return 0;
2553
2554 exit_device_put:
2555 platform_device_put(pdev);
2556 pdev = NULL;
2557 exit:
2558 return err;
2559 }
2560
2561 static int __devinit dme1737_isa_probe(struct platform_device *pdev)
2562 {
2563 u8 company, device;
2564 struct resource *res;
2565 struct dme1737_data *data;
2566 struct device *dev = &pdev->dev;
2567 int err;
2568
2569 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2570 if (!request_region(res->start, DME1737_EXTENT, "dme1737")) {
2571 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
2572 (unsigned short)res->start,
2573 (unsigned short)res->start + DME1737_EXTENT - 1);
2574 err = -EBUSY;
2575 goto exit;
2576 }
2577
2578 data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
2579 if (!data) {
2580 err = -ENOMEM;
2581 goto exit_release_region;
2582 }
2583
2584 data->addr = res->start;
2585 platform_set_drvdata(pdev, data);
2586
2587 /* Skip chip detection if module is loaded with force_id parameter */
2588 switch (force_id) {
2589 case SCH3112_ID:
2590 case SCH3114_ID:
2591 case SCH3116_ID:
2592 data->type = sch311x;
2593 break;
2594 case SCH5127_ID:
2595 data->type = sch5127;
2596 break;
2597 default:
2598 company = dme1737_read(data, DME1737_REG_COMPANY);
2599 device = dme1737_read(data, DME1737_REG_DEVICE);
2600
2601 if ((company == DME1737_COMPANY_SMSC) &&
2602 (device == SCH311X_DEVICE)) {
2603 data->type = sch311x;
2604 } else if ((company == DME1737_COMPANY_SMSC) &&
2605 (device == SCH5127_DEVICE)) {
2606 data->type = sch5127;
2607 } else {
2608 err = -ENODEV;
2609 goto exit_kfree;
2610 }
2611 }
2612
2613 if (data->type == sch5127) {
2614 data->name = "sch5127";
2615 } else {
2616 data->name = "sch311x";
2617 }
2618
2619 /* Initialize the mutex */
2620 mutex_init(&data->update_lock);
2621
2622 dev_info(dev, "Found a %s chip at 0x%04x\n",
2623 data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr);
2624
2625 /* Initialize the chip */
2626 err = dme1737_init_device(dev);
2627 if (err) {
2628 dev_err(dev, "Failed to initialize device.\n");
2629 goto exit_kfree;
2630 }
2631
2632 /* Create sysfs files */
2633 err = dme1737_create_files(dev);
2634 if (err) {
2635 dev_err(dev, "Failed to create sysfs files.\n");
2636 goto exit_kfree;
2637 }
2638
2639 /* Register device */
2640 data->hwmon_dev = hwmon_device_register(dev);
2641 if (IS_ERR(data->hwmon_dev)) {
2642 dev_err(dev, "Failed to register device.\n");
2643 err = PTR_ERR(data->hwmon_dev);
2644 goto exit_remove_files;
2645 }
2646
2647 return 0;
2648
2649 exit_remove_files:
2650 dme1737_remove_files(dev);
2651 exit_kfree:
2652 platform_set_drvdata(pdev, NULL);
2653 kfree(data);
2654 exit_release_region:
2655 release_region(res->start, DME1737_EXTENT);
2656 exit:
2657 return err;
2658 }
2659
2660 static int __devexit dme1737_isa_remove(struct platform_device *pdev)
2661 {
2662 struct dme1737_data *data = platform_get_drvdata(pdev);
2663
2664 hwmon_device_unregister(data->hwmon_dev);
2665 dme1737_remove_files(&pdev->dev);
2666 release_region(data->addr, DME1737_EXTENT);
2667 platform_set_drvdata(pdev, NULL);
2668 kfree(data);
2669
2670 return 0;
2671 }
2672
2673 static struct platform_driver dme1737_isa_driver = {
2674 .driver = {
2675 .owner = THIS_MODULE,
2676 .name = "dme1737",
2677 },
2678 .probe = dme1737_isa_probe,
2679 .remove = __devexit_p(dme1737_isa_remove),
2680 };
2681
2682 /* ---------------------------------------------------------------------
2683 * Module initialization and cleanup
2684 * --------------------------------------------------------------------- */
2685
2686 static int __init dme1737_init(void)
2687 {
2688 int err;
2689 unsigned short addr;
2690
2691 err = i2c_add_driver(&dme1737_i2c_driver);
2692 if (err) {
2693 goto exit;
2694 }
2695
2696 if (dme1737_isa_detect(0x2e, &addr) &&
2697 dme1737_isa_detect(0x4e, &addr) &&
2698 (!probe_all_addr ||
2699 (dme1737_isa_detect(0x162e, &addr) &&
2700 dme1737_isa_detect(0x164e, &addr)))) {
2701 /* Return 0 if we didn't find an ISA device */
2702 return 0;
2703 }
2704
2705 err = platform_driver_register(&dme1737_isa_driver);
2706 if (err) {
2707 goto exit_del_i2c_driver;
2708 }
2709
2710 /* Sets global pdev as a side effect */
2711 err = dme1737_isa_device_add(addr);
2712 if (err) {
2713 goto exit_del_isa_driver;
2714 }
2715
2716 return 0;
2717
2718 exit_del_isa_driver:
2719 platform_driver_unregister(&dme1737_isa_driver);
2720 exit_del_i2c_driver:
2721 i2c_del_driver(&dme1737_i2c_driver);
2722 exit:
2723 return err;
2724 }
2725
2726 static void __exit dme1737_exit(void)
2727 {
2728 if (pdev) {
2729 platform_device_unregister(pdev);
2730 platform_driver_unregister(&dme1737_isa_driver);
2731 }
2732
2733 i2c_del_driver(&dme1737_i2c_driver);
2734 }
2735
2736 MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
2737 MODULE_DESCRIPTION("DME1737 sensors");
2738 MODULE_LICENSE("GPL");
2739
2740 module_init(dme1737_init);
2741 module_exit(dme1737_exit);
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