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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027,
4 * and SCH5127 Super-I/O chips integrated hardware monitoring
5 * features.
6 * Copyright (c) 2007, 2008, 2009, 2010 Juerg Haefliger <juergh@gmail.com>
7 *
8 * This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access
9 * the chip registers if a DME1737, A8000, or SCH5027 is found and the ISA bus
10 * if a SCH311x or SCH5127 chip is found. Both types of chips have very
11 * similar hardware monitoring capabilities but differ in the way they can be
12 * accessed.
13 */
14
15#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16
17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/slab.h>
20#include <linux/jiffies.h>
21#include <linux/i2c.h>
22#include <linux/platform_device.h>
23#include <linux/hwmon.h>
24#include <linux/hwmon-sysfs.h>
25#include <linux/hwmon-vid.h>
26#include <linux/err.h>
27#include <linux/mutex.h>
28#include <linux/acpi.h>
29#include <linux/io.h>
30
31/* ISA device, if found */
32static struct platform_device *pdev;
33
34/* Module load parameters */
35static bool force_start;
36module_param(force_start, bool, 0);
37MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs");
38
39static unsigned short force_id;
40module_param(force_id, ushort, 0);
41MODULE_PARM_DESC(force_id, "Override the detected device ID");
42
43static bool probe_all_addr;
44module_param(probe_all_addr, bool, 0);
45MODULE_PARM_DESC(probe_all_addr,
46 "Include probing of non-standard LPC addresses");
47
48/* Addresses to scan */
49static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
50
51enum chips { dme1737, sch5027, sch311x, sch5127 };
52
53#define DO_REPORT "Please report to the driver maintainer."
54
55/* ---------------------------------------------------------------------
56 * Registers
57 *
58 * The sensors are defined as follows:
59 *
60 * Voltages Temperatures
61 * -------- ------------
62 * in0 +5VTR (+5V stdby) temp1 Remote diode 1
63 * in1 Vccp (proc core) temp2 Internal temp
64 * in2 VCC (internal +3.3V) temp3 Remote diode 2
65 * in3 +5V
66 * in4 +12V
67 * in5 VTR (+3.3V stby)
68 * in6 Vbat
69 * in7 Vtrip (sch5127 only)
70 *
71 * --------------------------------------------------------------------- */
72
73/* Voltages (in) numbered 0-7 (ix) */
74#define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) : \
75 (ix) < 7 ? 0x94 + (ix) : \
76 0x1f)
77#define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \
78 : 0x91 + (ix) * 2)
79#define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \
80 : 0x92 + (ix) * 2)
81
82/* Temperatures (temp) numbered 0-2 (ix) */
83#define DME1737_REG_TEMP(ix) (0x25 + (ix))
84#define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2)
85#define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2)
86#define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \
87 : 0x1c + (ix))
88
89/*
90 * Voltage and temperature LSBs
91 * The LSBs (4 bits each) are stored in 5 registers with the following layouts:
92 * IN_TEMP_LSB(0) = [in5, in6]
93 * IN_TEMP_LSB(1) = [temp3, temp1]
94 * IN_TEMP_LSB(2) = [in4, temp2]
95 * IN_TEMP_LSB(3) = [in3, in0]
96 * IN_TEMP_LSB(4) = [in2, in1]
97 * IN_TEMP_LSB(5) = [res, in7]
98 */
99#define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix))
100static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5};
101static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4};
102static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
103static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0};
104
105/* Fans numbered 0-5 (ix) */
106#define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \
107 : 0xa1 + (ix) * 2)
108#define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \
109 : 0xa5 + (ix) * 2)
110#define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \
111 : 0xb2 + (ix))
112#define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */
113
114/* PWMs numbered 0-2, 4-5 (ix) */
115#define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \
116 : 0xa1 + (ix))
117#define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */
118#define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */
119#define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \
120 : 0xa3 + (ix))
121/*
122 * The layout of the ramp rate registers is different from the other pwm
123 * registers. The bits for the 3 PWMs are stored in 2 registers:
124 * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0]
125 * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0]
126 */
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/*
133 * The layout of the hysteresis registers is different from the other zone
134 * registers. The bits for the 3 zones are stored in 2 registers:
135 * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
136 * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES]
137 */
138#define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix))
139
140/*
141 * Alarm registers and bit mapping
142 * The 3 8-bit alarm registers will be concatenated to a single 32-bit
143 * alarm value [0, ALARM3, ALARM2, ALARM1].
144 */
145#define DME1737_REG_ALARM1 0x41
146#define DME1737_REG_ALARM2 0x42
147#define DME1737_REG_ALARM3 0x83
148static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18};
149static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
150static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
151
152/* Miscellaneous registers */
153#define DME1737_REG_DEVICE 0x3d
154#define DME1737_REG_COMPANY 0x3e
155#define DME1737_REG_VERSTEP 0x3f
156#define DME1737_REG_CONFIG 0x40
157#define DME1737_REG_CONFIG2 0x7f
158#define DME1737_REG_VID 0x43
159#define DME1737_REG_TACH_PWM 0x81
160
161/* ---------------------------------------------------------------------
162 * Misc defines
163 * --------------------------------------------------------------------- */
164
165/* Chip identification */
166#define DME1737_COMPANY_SMSC 0x5c
167#define DME1737_VERSTEP 0x88
168#define DME1737_VERSTEP_MASK 0xf8
169#define SCH311X_DEVICE 0x8c
170#define SCH5027_VERSTEP 0x69
171#define SCH5127_DEVICE 0x8e
172
173/* Device ID values (global configuration register index 0x20) */
174#define DME1737_ID_1 0x77
175#define DME1737_ID_2 0x78
176#define SCH3112_ID 0x7c
177#define SCH3114_ID 0x7d
178#define SCH3116_ID 0x7f
179#define SCH5027_ID 0x89
180#define SCH5127_ID 0x86
181
182/* Length of ISA address segment */
183#define DME1737_EXTENT 2
184
185/* chip-dependent features */
186#define HAS_TEMP_OFFSET (1 << 0) /* bit 0 */
187#define HAS_VID (1 << 1) /* bit 1 */
188#define HAS_ZONE3 (1 << 2) /* bit 2 */
189#define HAS_ZONE_HYST (1 << 3) /* bit 3 */
190#define HAS_PWM_MIN (1 << 4) /* bit 4 */
191#define HAS_FAN(ix) (1 << ((ix) + 5)) /* bits 5-10 */
192#define HAS_PWM(ix) (1 << ((ix) + 11)) /* bits 11-16 */
193#define HAS_IN7 (1 << 17) /* bit 17 */
194
195/* ---------------------------------------------------------------------
196 * Data structures and manipulation thereof
197 * --------------------------------------------------------------------- */
198
199struct dme1737_data {
200 struct i2c_client *client; /* for I2C devices only */
201 struct device *hwmon_dev;
202 const char *name;
203 unsigned int addr; /* for ISA devices only */
204
205 struct mutex update_lock;
206 int valid; /* !=0 if following fields are valid */
207 unsigned long last_update; /* in jiffies */
208 unsigned long last_vbat; /* in jiffies */
209 enum chips type;
210 const int *in_nominal; /* pointer to IN_NOMINAL array */
211
212 u8 vid;
213 u8 pwm_rr_en;
214 u32 has_features;
215
216 /* Register values */
217 u16 in[8];
218 u8 in_min[8];
219 u8 in_max[8];
220 s16 temp[3];
221 s8 temp_min[3];
222 s8 temp_max[3];
223 s8 temp_offset[3];
224 u8 config;
225 u8 config2;
226 u8 vrm;
227 u16 fan[6];
228 u16 fan_min[6];
229 u8 fan_max[2];
230 u8 fan_opt[6];
231 u8 pwm[6];
232 u8 pwm_min[3];
233 u8 pwm_config[3];
234 u8 pwm_acz[3];
235 u8 pwm_freq[6];
236 u8 pwm_rr[2];
237 s8 zone_low[3];
238 s8 zone_abs[3];
239 u8 zone_hyst[2];
240 u32 alarms;
241};
242
243/* Nominal voltage values */
244static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
245 3300};
246static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
247 3300};
248static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
249 3300};
250static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300,
251 3300, 1500};
252#define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \
253 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \
254 (type) == sch5127 ? IN_NOMINAL_SCH5127 : \
255 IN_NOMINAL_DME1737)
256
257/*
258 * Voltage input
259 * Voltage inputs have 16 bits resolution, limit values have 8 bits
260 * resolution.
261 */
262static inline int IN_FROM_REG(int reg, int nominal, int res)
263{
264 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
265}
266
267static inline int IN_TO_REG(long val, int nominal)
268{
269 val = clamp_val(val, 0, 255 * nominal / 192);
270 return DIV_ROUND_CLOSEST(val * 192, nominal);
271}
272
273/*
274 * Temperature input
275 * The register values represent temperatures in 2's complement notation from
276 * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit
277 * values have 8 bits resolution.
278 */
279static inline int TEMP_FROM_REG(int reg, int res)
280{
281 return (reg * 1000) >> (res - 8);
282}
283
284static inline int TEMP_TO_REG(long val)
285{
286 val = clamp_val(val, -128000, 127000);
287 return DIV_ROUND_CLOSEST(val, 1000);
288}
289
290/* Temperature range */
291static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
292 10000, 13333, 16000, 20000, 26666, 32000,
293 40000, 53333, 80000};
294
295static inline int TEMP_RANGE_FROM_REG(int reg)
296{
297 return TEMP_RANGE[(reg >> 4) & 0x0f];
298}
299
300static int TEMP_RANGE_TO_REG(long val, int reg)
301{
302 int i;
303
304 for (i = 15; i > 0; i--) {
305 if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2)
306 break;
307 }
308
309 return (reg & 0x0f) | (i << 4);
310}
311
312/*
313 * Temperature hysteresis
314 * Register layout:
315 * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
316 * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx]
317 */
318static inline int TEMP_HYST_FROM_REG(int reg, int ix)
319{
320 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
321}
322
323static inline int TEMP_HYST_TO_REG(int temp, long hyst, int ix, int reg)
324{
325 hyst = clamp_val(hyst, temp - 15000, temp);
326 hyst = DIV_ROUND_CLOSEST(temp - hyst, 1000);
327
328 return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4);
329}
330
331/* Fan input RPM */
332static inline int FAN_FROM_REG(int reg, int tpc)
333{
334 if (tpc)
335 return tpc * reg;
336 else
337 return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg;
338}
339
340static inline int FAN_TO_REG(long val, int tpc)
341{
342 if (tpc) {
343 return clamp_val(val / tpc, 0, 0xffff);
344 } else {
345 return (val <= 0) ? 0xffff :
346 clamp_val(90000 * 60 / val, 0, 0xfffe);
347 }
348}
349
350/*
351 * Fan TPC (tach pulse count)
352 * Converts a register value to a TPC multiplier or returns 0 if the tachometer
353 * is configured in legacy (non-tpc) mode
354 */
355static inline int FAN_TPC_FROM_REG(int reg)
356{
357 return (reg & 0x20) ? 0 : 60 >> (reg & 0x03);
358}
359
360/*
361 * Fan type
362 * The type of a fan is expressed in number of pulses-per-revolution that it
363 * emits
364 */
365static inline int FAN_TYPE_FROM_REG(int reg)
366{
367 int edge = (reg >> 1) & 0x03;
368
369 return (edge > 0) ? 1 << (edge - 1) : 0;
370}
371
372static inline int FAN_TYPE_TO_REG(long val, int reg)
373{
374 int edge = (val == 4) ? 3 : val;
375
376 return (reg & 0xf9) | (edge << 1);
377}
378
379/* Fan max RPM */
380static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
381 0x11, 0x0f, 0x0e};
382
383static int FAN_MAX_FROM_REG(int reg)
384{
385 int i;
386
387 for (i = 10; i > 0; i--) {
388 if (reg == FAN_MAX[i])
389 break;
390 }
391
392 return 1000 + i * 500;
393}
394
395static int FAN_MAX_TO_REG(long val)
396{
397 int i;
398
399 for (i = 10; i > 0; i--) {
400 if (val > (1000 + (i - 1) * 500))
401 break;
402 }
403
404 return FAN_MAX[i];
405}
406
407/*
408 * PWM enable
409 * Register to enable mapping:
410 * 000: 2 fan on zone 1 auto
411 * 001: 2 fan on zone 2 auto
412 * 010: 2 fan on zone 3 auto
413 * 011: 0 fan full on
414 * 100: -1 fan disabled
415 * 101: 2 fan on hottest of zones 2,3 auto
416 * 110: 2 fan on hottest of zones 1,2,3 auto
417 * 111: 1 fan in manual mode
418 */
419static inline int PWM_EN_FROM_REG(int reg)
420{
421 static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1};
422
423 return en[(reg >> 5) & 0x07];
424}
425
426static inline int PWM_EN_TO_REG(int val, int reg)
427{
428 int en = (val == 1) ? 7 : 3;
429
430 return (reg & 0x1f) | ((en & 0x07) << 5);
431}
432
433/*
434 * PWM auto channels zone
435 * Register to auto channels zone mapping (ACZ is a bitfield with bit x
436 * corresponding to zone x+1):
437 * 000: 001 fan on zone 1 auto
438 * 001: 010 fan on zone 2 auto
439 * 010: 100 fan on zone 3 auto
440 * 011: 000 fan full on
441 * 100: 000 fan disabled
442 * 101: 110 fan on hottest of zones 2,3 auto
443 * 110: 111 fan on hottest of zones 1,2,3 auto
444 * 111: 000 fan in manual mode
445 */
446static inline int PWM_ACZ_FROM_REG(int reg)
447{
448 static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0};
449
450 return acz[(reg >> 5) & 0x07];
451}
452
453static inline int PWM_ACZ_TO_REG(long val, int reg)
454{
455 int acz = (val == 4) ? 2 : val - 1;
456
457 return (reg & 0x1f) | ((acz & 0x07) << 5);
458}
459
460/* PWM frequency */
461static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
462 15000, 20000, 30000, 25000, 0, 0, 0, 0};
463
464static inline int PWM_FREQ_FROM_REG(int reg)
465{
466 return PWM_FREQ[reg & 0x0f];
467}
468
469static int PWM_FREQ_TO_REG(long val, int reg)
470{
471 int i;
472
473 /* the first two cases are special - stupid chip design! */
474 if (val > 27500) {
475 i = 10;
476 } else if (val > 22500) {
477 i = 11;
478 } else {
479 for (i = 9; i > 0; i--) {
480 if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2)
481 break;
482 }
483 }
484
485 return (reg & 0xf0) | i;
486}
487
488/*
489 * PWM ramp rate
490 * Register layout:
491 * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0]
492 * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0]
493 */
494static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
495
496static inline int PWM_RR_FROM_REG(int reg, int ix)
497{
498 int rr = (ix == 1) ? reg >> 4 : reg;
499
500 return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0;
501}
502
503static int PWM_RR_TO_REG(long val, int ix, int reg)
504{
505 int i;
506
507 for (i = 0; i < 7; i++) {
508 if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2)
509 break;
510 }
511
512 return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i;
513}
514
515/* PWM ramp rate enable */
516static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
517{
518 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
519}
520
521static inline int PWM_RR_EN_TO_REG(long val, int ix, int reg)
522{
523 int en = (ix == 1) ? 0x80 : 0x08;
524
525 return val ? reg | en : reg & ~en;
526}
527
528/*
529 * PWM min/off
530 * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for
531 * the register layout).
532 */
533static inline int PWM_OFF_FROM_REG(int reg, int ix)
534{
535 return (reg >> (ix + 5)) & 0x01;
536}
537
538static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
539{
540 return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5));
541}
542
543/* ---------------------------------------------------------------------
544 * Device I/O access
545 *
546 * ISA access is performed through an index/data register pair and needs to
547 * be protected by a mutex during runtime (not required for initialization).
548 * We use data->update_lock for this and need to ensure that we acquire it
549 * before calling dme1737_read or dme1737_write.
550 * --------------------------------------------------------------------- */
551
552static u8 dme1737_read(const struct dme1737_data *data, u8 reg)
553{
554 struct i2c_client *client = data->client;
555 s32 val;
556
557 if (client) { /* I2C device */
558 val = i2c_smbus_read_byte_data(client, reg);
559
560 if (val < 0) {
561 dev_warn(&client->dev,
562 "Read from register 0x%02x failed! %s\n",
563 reg, DO_REPORT);
564 }
565 } else { /* ISA device */
566 outb(reg, data->addr);
567 val = inb(data->addr + 1);
568 }
569
570 return val;
571}
572
573static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val)
574{
575 struct i2c_client *client = data->client;
576 s32 res = 0;
577
578 if (client) { /* I2C device */
579 res = i2c_smbus_write_byte_data(client, reg, val);
580
581 if (res < 0) {
582 dev_warn(&client->dev,
583 "Write to register 0x%02x failed! %s\n",
584 reg, DO_REPORT);
585 }
586 } else { /* ISA device */
587 outb(reg, data->addr);
588 outb(val, data->addr + 1);
589 }
590
591 return res;
592}
593
594static struct dme1737_data *dme1737_update_device(struct device *dev)
595{
596 struct dme1737_data *data = dev_get_drvdata(dev);
597 int ix;
598 u8 lsb[6];
599
600 mutex_lock(&data->update_lock);
601
602 /* Enable a Vbat monitoring cycle every 10 mins */
603 if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) {
604 dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data,
605 DME1737_REG_CONFIG) | 0x10);
606 data->last_vbat = jiffies;
607 }
608
609 /* Sample register contents every 1 sec */
610 if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
611 if (data->has_features & HAS_VID) {
612 data->vid = dme1737_read(data, DME1737_REG_VID) &
613 0x3f;
614 }
615
616 /* In (voltage) registers */
617 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
618 /*
619 * Voltage inputs are stored as 16 bit values even
620 * though they have only 12 bits resolution. This is
621 * to make it consistent with the temp inputs.
622 */
623 if (ix == 7 && !(data->has_features & HAS_IN7))
624 continue;
625 data->in[ix] = dme1737_read(data,
626 DME1737_REG_IN(ix)) << 8;
627 data->in_min[ix] = dme1737_read(data,
628 DME1737_REG_IN_MIN(ix));
629 data->in_max[ix] = dme1737_read(data,
630 DME1737_REG_IN_MAX(ix));
631 }
632
633 /* Temp registers */
634 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
635 /*
636 * Temp inputs are stored as 16 bit values even
637 * though they have only 12 bits resolution. This is
638 * to take advantage of implicit conversions between
639 * register values (2's complement) and temp values
640 * (signed decimal).
641 */
642 data->temp[ix] = dme1737_read(data,
643 DME1737_REG_TEMP(ix)) << 8;
644 data->temp_min[ix] = dme1737_read(data,
645 DME1737_REG_TEMP_MIN(ix));
646 data->temp_max[ix] = dme1737_read(data,
647 DME1737_REG_TEMP_MAX(ix));
648 if (data->has_features & HAS_TEMP_OFFSET) {
649 data->temp_offset[ix] = dme1737_read(data,
650 DME1737_REG_TEMP_OFFSET(ix));
651 }
652 }
653
654 /*
655 * In and temp LSB registers
656 * The LSBs are latched when the MSBs are read, so the order in
657 * which the registers are read (MSB first, then LSB) is
658 * important!
659 */
660 for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) {
661 if (ix == 5 && !(data->has_features & HAS_IN7))
662 continue;
663 lsb[ix] = dme1737_read(data,
664 DME1737_REG_IN_TEMP_LSB(ix));
665 }
666 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
667 if (ix == 7 && !(data->has_features & HAS_IN7))
668 continue;
669 data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] <<
670 DME1737_REG_IN_LSB_SHL[ix]) & 0xf0;
671 }
672 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
673 data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] <<
674 DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0;
675 }
676
677 /* Fan registers */
678 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
679 /*
680 * Skip reading registers if optional fans are not
681 * present
682 */
683 if (!(data->has_features & HAS_FAN(ix)))
684 continue;
685 data->fan[ix] = dme1737_read(data,
686 DME1737_REG_FAN(ix));
687 data->fan[ix] |= dme1737_read(data,
688 DME1737_REG_FAN(ix) + 1) << 8;
689 data->fan_min[ix] = dme1737_read(data,
690 DME1737_REG_FAN_MIN(ix));
691 data->fan_min[ix] |= dme1737_read(data,
692 DME1737_REG_FAN_MIN(ix) + 1) << 8;
693 data->fan_opt[ix] = dme1737_read(data,
694 DME1737_REG_FAN_OPT(ix));
695 /* fan_max exists only for fan[5-6] */
696 if (ix > 3) {
697 data->fan_max[ix - 4] = dme1737_read(data,
698 DME1737_REG_FAN_MAX(ix));
699 }
700 }
701
702 /* PWM registers */
703 for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
704 /*
705 * Skip reading registers if optional PWMs are not
706 * present
707 */
708 if (!(data->has_features & HAS_PWM(ix)))
709 continue;
710 data->pwm[ix] = dme1737_read(data,
711 DME1737_REG_PWM(ix));
712 data->pwm_freq[ix] = dme1737_read(data,
713 DME1737_REG_PWM_FREQ(ix));
714 /* pwm_config and pwm_min exist only for pwm[1-3] */
715 if (ix < 3) {
716 data->pwm_config[ix] = dme1737_read(data,
717 DME1737_REG_PWM_CONFIG(ix));
718 data->pwm_min[ix] = dme1737_read(data,
719 DME1737_REG_PWM_MIN(ix));
720 }
721 }
722 for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) {
723 data->pwm_rr[ix] = dme1737_read(data,
724 DME1737_REG_PWM_RR(ix));
725 }
726
727 /* Thermal zone registers */
728 for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
729 /* Skip reading registers if zone3 is not present */
730 if ((ix == 2) && !(data->has_features & HAS_ZONE3))
731 continue;
732 /* sch5127 zone2 registers are special */
733 if ((ix == 1) && (data->type == sch5127)) {
734 data->zone_low[1] = dme1737_read(data,
735 DME1737_REG_ZONE_LOW(2));
736 data->zone_abs[1] = dme1737_read(data,
737 DME1737_REG_ZONE_ABS(2));
738 } else {
739 data->zone_low[ix] = dme1737_read(data,
740 DME1737_REG_ZONE_LOW(ix));
741 data->zone_abs[ix] = dme1737_read(data,
742 DME1737_REG_ZONE_ABS(ix));
743 }
744 }
745 if (data->has_features & HAS_ZONE_HYST) {
746 for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
747 data->zone_hyst[ix] = dme1737_read(data,
748 DME1737_REG_ZONE_HYST(ix));
749 }
750 }
751
752 /* Alarm registers */
753 data->alarms = dme1737_read(data,
754 DME1737_REG_ALARM1);
755 /*
756 * Bit 7 tells us if the other alarm registers are non-zero and
757 * therefore also need to be read
758 */
759 if (data->alarms & 0x80) {
760 data->alarms |= dme1737_read(data,
761 DME1737_REG_ALARM2) << 8;
762 data->alarms |= dme1737_read(data,
763 DME1737_REG_ALARM3) << 16;
764 }
765
766 /*
767 * The ISA chips require explicit clearing of alarm bits.
768 * Don't worry, an alarm will come back if the condition
769 * that causes it still exists
770 */
771 if (!data->client) {
772 if (data->alarms & 0xff0000)
773 dme1737_write(data, DME1737_REG_ALARM3, 0xff);
774 if (data->alarms & 0xff00)
775 dme1737_write(data, DME1737_REG_ALARM2, 0xff);
776 if (data->alarms & 0xff)
777 dme1737_write(data, DME1737_REG_ALARM1, 0xff);
778 }
779
780 data->last_update = jiffies;
781 data->valid = 1;
782 }
783
784 mutex_unlock(&data->update_lock);
785
786 return data;
787}
788
789/* ---------------------------------------------------------------------
790 * Voltage sysfs attributes
791 * ix = [0-7]
792 * --------------------------------------------------------------------- */
793
794#define SYS_IN_INPUT 0
795#define SYS_IN_MIN 1
796#define SYS_IN_MAX 2
797#define SYS_IN_ALARM 3
798
799static ssize_t show_in(struct device *dev, struct device_attribute *attr,
800 char *buf)
801{
802 struct dme1737_data *data = dme1737_update_device(dev);
803 struct sensor_device_attribute_2
804 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
805 int ix = sensor_attr_2->index;
806 int fn = sensor_attr_2->nr;
807 int res;
808
809 switch (fn) {
810 case SYS_IN_INPUT:
811 res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16);
812 break;
813 case SYS_IN_MIN:
814 res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8);
815 break;
816 case SYS_IN_MAX:
817 res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8);
818 break;
819 case SYS_IN_ALARM:
820 res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01;
821 break;
822 default:
823 res = 0;
824 dev_dbg(dev, "Unknown function %d.\n", fn);
825 }
826
827 return sprintf(buf, "%d\n", res);
828}
829
830static ssize_t set_in(struct device *dev, struct device_attribute *attr,
831 const char *buf, size_t count)
832{
833 struct dme1737_data *data = dev_get_drvdata(dev);
834 struct sensor_device_attribute_2
835 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
836 int ix = sensor_attr_2->index;
837 int fn = sensor_attr_2->nr;
838 long val;
839 int err;
840
841 err = kstrtol(buf, 10, &val);
842 if (err)
843 return err;
844
845 mutex_lock(&data->update_lock);
846 switch (fn) {
847 case SYS_IN_MIN:
848 data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]);
849 dme1737_write(data, DME1737_REG_IN_MIN(ix),
850 data->in_min[ix]);
851 break;
852 case SYS_IN_MAX:
853 data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]);
854 dme1737_write(data, DME1737_REG_IN_MAX(ix),
855 data->in_max[ix]);
856 break;
857 default:
858 dev_dbg(dev, "Unknown function %d.\n", fn);
859 }
860 mutex_unlock(&data->update_lock);
861
862 return count;
863}
864
865/* ---------------------------------------------------------------------
866 * Temperature sysfs attributes
867 * ix = [0-2]
868 * --------------------------------------------------------------------- */
869
870#define SYS_TEMP_INPUT 0
871#define SYS_TEMP_MIN 1
872#define SYS_TEMP_MAX 2
873#define SYS_TEMP_OFFSET 3
874#define SYS_TEMP_ALARM 4
875#define SYS_TEMP_FAULT 5
876
877static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
878 char *buf)
879{
880 struct dme1737_data *data = dme1737_update_device(dev);
881 struct sensor_device_attribute_2
882 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
883 int ix = sensor_attr_2->index;
884 int fn = sensor_attr_2->nr;
885 int res;
886
887 switch (fn) {
888 case SYS_TEMP_INPUT:
889 res = TEMP_FROM_REG(data->temp[ix], 16);
890 break;
891 case SYS_TEMP_MIN:
892 res = TEMP_FROM_REG(data->temp_min[ix], 8);
893 break;
894 case SYS_TEMP_MAX:
895 res = TEMP_FROM_REG(data->temp_max[ix], 8);
896 break;
897 case SYS_TEMP_OFFSET:
898 res = TEMP_FROM_REG(data->temp_offset[ix], 8);
899 break;
900 case SYS_TEMP_ALARM:
901 res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01;
902 break;
903 case SYS_TEMP_FAULT:
904 res = (((u16)data->temp[ix] & 0xff00) == 0x8000);
905 break;
906 default:
907 res = 0;
908 dev_dbg(dev, "Unknown function %d.\n", fn);
909 }
910
911 return sprintf(buf, "%d\n", res);
912}
913
914static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
915 const char *buf, size_t count)
916{
917 struct dme1737_data *data = dev_get_drvdata(dev);
918 struct sensor_device_attribute_2
919 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
920 int ix = sensor_attr_2->index;
921 int fn = sensor_attr_2->nr;
922 long val;
923 int err;
924
925 err = kstrtol(buf, 10, &val);
926 if (err)
927 return err;
928
929 mutex_lock(&data->update_lock);
930 switch (fn) {
931 case SYS_TEMP_MIN:
932 data->temp_min[ix] = TEMP_TO_REG(val);
933 dme1737_write(data, DME1737_REG_TEMP_MIN(ix),
934 data->temp_min[ix]);
935 break;
936 case SYS_TEMP_MAX:
937 data->temp_max[ix] = TEMP_TO_REG(val);
938 dme1737_write(data, DME1737_REG_TEMP_MAX(ix),
939 data->temp_max[ix]);
940 break;
941 case SYS_TEMP_OFFSET:
942 data->temp_offset[ix] = TEMP_TO_REG(val);
943 dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix),
944 data->temp_offset[ix]);
945 break;
946 default:
947 dev_dbg(dev, "Unknown function %d.\n", fn);
948 }
949 mutex_unlock(&data->update_lock);
950
951 return count;
952}
953
954/* ---------------------------------------------------------------------
955 * Zone sysfs attributes
956 * ix = [0-2]
957 * --------------------------------------------------------------------- */
958
959#define SYS_ZONE_AUTO_CHANNELS_TEMP 0
960#define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1
961#define SYS_ZONE_AUTO_POINT1_TEMP 2
962#define SYS_ZONE_AUTO_POINT2_TEMP 3
963#define SYS_ZONE_AUTO_POINT3_TEMP 4
964
965static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
966 char *buf)
967{
968 struct dme1737_data *data = dme1737_update_device(dev);
969 struct sensor_device_attribute_2
970 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
971 int ix = sensor_attr_2->index;
972 int fn = sensor_attr_2->nr;
973 int res;
974
975 switch (fn) {
976 case SYS_ZONE_AUTO_CHANNELS_TEMP:
977 /* check config2 for non-standard temp-to-zone mapping */
978 if ((ix == 1) && (data->config2 & 0x02))
979 res = 4;
980 else
981 res = 1 << ix;
982 break;
983 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
984 res = TEMP_FROM_REG(data->zone_low[ix], 8) -
985 TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix);
986 break;
987 case SYS_ZONE_AUTO_POINT1_TEMP:
988 res = TEMP_FROM_REG(data->zone_low[ix], 8);
989 break;
990 case SYS_ZONE_AUTO_POINT2_TEMP:
991 /* pwm_freq holds the temp range bits in the upper nibble */
992 res = TEMP_FROM_REG(data->zone_low[ix], 8) +
993 TEMP_RANGE_FROM_REG(data->pwm_freq[ix]);
994 break;
995 case SYS_ZONE_AUTO_POINT3_TEMP:
996 res = TEMP_FROM_REG(data->zone_abs[ix], 8);
997 break;
998 default:
999 res = 0;
1000 dev_dbg(dev, "Unknown function %d.\n", fn);
1001 }
1002
1003 return sprintf(buf, "%d\n", res);
1004}
1005
1006static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
1007 const char *buf, size_t count)
1008{
1009 struct dme1737_data *data = dev_get_drvdata(dev);
1010 struct sensor_device_attribute_2
1011 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1012 int ix = sensor_attr_2->index;
1013 int fn = sensor_attr_2->nr;
1014 long val;
1015 int temp;
1016 int err;
1017 u8 reg;
1018
1019 err = kstrtol(buf, 10, &val);
1020 if (err)
1021 return err;
1022
1023 mutex_lock(&data->update_lock);
1024 switch (fn) {
1025 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
1026 /* Refresh the cache */
1027 data->zone_low[ix] = dme1737_read(data,
1028 DME1737_REG_ZONE_LOW(ix));
1029 /* Modify the temp hyst value */
1030 temp = TEMP_FROM_REG(data->zone_low[ix], 8);
1031 reg = dme1737_read(data, DME1737_REG_ZONE_HYST(ix == 2));
1032 data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(temp, val, ix, reg);
1033 dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2),
1034 data->zone_hyst[ix == 2]);
1035 break;
1036 case SYS_ZONE_AUTO_POINT1_TEMP:
1037 data->zone_low[ix] = TEMP_TO_REG(val);
1038 dme1737_write(data, DME1737_REG_ZONE_LOW(ix),
1039 data->zone_low[ix]);
1040 break;
1041 case SYS_ZONE_AUTO_POINT2_TEMP:
1042 /* Refresh the cache */
1043 data->zone_low[ix] = dme1737_read(data,
1044 DME1737_REG_ZONE_LOW(ix));
1045 /*
1046 * Modify the temp range value (which is stored in the upper
1047 * nibble of the pwm_freq register)
1048 */
1049 temp = TEMP_FROM_REG(data->zone_low[ix], 8);
1050 val = clamp_val(val, temp, temp + 80000);
1051 reg = dme1737_read(data, DME1737_REG_PWM_FREQ(ix));
1052 data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val - temp, reg);
1053 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1054 data->pwm_freq[ix]);
1055 break;
1056 case SYS_ZONE_AUTO_POINT3_TEMP:
1057 data->zone_abs[ix] = TEMP_TO_REG(val);
1058 dme1737_write(data, DME1737_REG_ZONE_ABS(ix),
1059 data->zone_abs[ix]);
1060 break;
1061 default:
1062 dev_dbg(dev, "Unknown function %d.\n", fn);
1063 }
1064 mutex_unlock(&data->update_lock);
1065
1066 return count;
1067}
1068
1069/* ---------------------------------------------------------------------
1070 * Fan sysfs attributes
1071 * ix = [0-5]
1072 * --------------------------------------------------------------------- */
1073
1074#define SYS_FAN_INPUT 0
1075#define SYS_FAN_MIN 1
1076#define SYS_FAN_MAX 2
1077#define SYS_FAN_ALARM 3
1078#define SYS_FAN_TYPE 4
1079
1080static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1081 char *buf)
1082{
1083 struct dme1737_data *data = dme1737_update_device(dev);
1084 struct sensor_device_attribute_2
1085 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1086 int ix = sensor_attr_2->index;
1087 int fn = sensor_attr_2->nr;
1088 int res;
1089
1090 switch (fn) {
1091 case SYS_FAN_INPUT:
1092 res = FAN_FROM_REG(data->fan[ix],
1093 ix < 4 ? 0 :
1094 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1095 break;
1096 case SYS_FAN_MIN:
1097 res = FAN_FROM_REG(data->fan_min[ix],
1098 ix < 4 ? 0 :
1099 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1100 break;
1101 case SYS_FAN_MAX:
1102 /* only valid for fan[5-6] */
1103 res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]);
1104 break;
1105 case SYS_FAN_ALARM:
1106 res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01;
1107 break;
1108 case SYS_FAN_TYPE:
1109 /* only valid for fan[1-4] */
1110 res = FAN_TYPE_FROM_REG(data->fan_opt[ix]);
1111 break;
1112 default:
1113 res = 0;
1114 dev_dbg(dev, "Unknown function %d.\n", fn);
1115 }
1116
1117 return sprintf(buf, "%d\n", res);
1118}
1119
1120static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1121 const char *buf, size_t count)
1122{
1123 struct dme1737_data *data = dev_get_drvdata(dev);
1124 struct sensor_device_attribute_2
1125 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1126 int ix = sensor_attr_2->index;
1127 int fn = sensor_attr_2->nr;
1128 long val;
1129 int err;
1130
1131 err = kstrtol(buf, 10, &val);
1132 if (err)
1133 return err;
1134
1135 mutex_lock(&data->update_lock);
1136 switch (fn) {
1137 case SYS_FAN_MIN:
1138 if (ix < 4) {
1139 data->fan_min[ix] = FAN_TO_REG(val, 0);
1140 } else {
1141 /* Refresh the cache */
1142 data->fan_opt[ix] = dme1737_read(data,
1143 DME1737_REG_FAN_OPT(ix));
1144 /* Modify the fan min value */
1145 data->fan_min[ix] = FAN_TO_REG(val,
1146 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1147 }
1148 dme1737_write(data, DME1737_REG_FAN_MIN(ix),
1149 data->fan_min[ix] & 0xff);
1150 dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1,
1151 data->fan_min[ix] >> 8);
1152 break;
1153 case SYS_FAN_MAX:
1154 /* Only valid for fan[5-6] */
1155 data->fan_max[ix - 4] = FAN_MAX_TO_REG(val);
1156 dme1737_write(data, DME1737_REG_FAN_MAX(ix),
1157 data->fan_max[ix - 4]);
1158 break;
1159 case SYS_FAN_TYPE:
1160 /* Only valid for fan[1-4] */
1161 if (!(val == 1 || val == 2 || val == 4)) {
1162 count = -EINVAL;
1163 dev_warn(dev,
1164 "Fan type value %ld not supported. Choose one of 1, 2, or 4.\n",
1165 val);
1166 goto exit;
1167 }
1168 data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data,
1169 DME1737_REG_FAN_OPT(ix)));
1170 dme1737_write(data, DME1737_REG_FAN_OPT(ix),
1171 data->fan_opt[ix]);
1172 break;
1173 default:
1174 dev_dbg(dev, "Unknown function %d.\n", fn);
1175 }
1176exit:
1177 mutex_unlock(&data->update_lock);
1178
1179 return count;
1180}
1181
1182/* ---------------------------------------------------------------------
1183 * PWM sysfs attributes
1184 * ix = [0-4]
1185 * --------------------------------------------------------------------- */
1186
1187#define SYS_PWM 0
1188#define SYS_PWM_FREQ 1
1189#define SYS_PWM_ENABLE 2
1190#define SYS_PWM_RAMP_RATE 3
1191#define SYS_PWM_AUTO_CHANNELS_ZONE 4
1192#define SYS_PWM_AUTO_PWM_MIN 5
1193#define SYS_PWM_AUTO_POINT1_PWM 6
1194#define SYS_PWM_AUTO_POINT2_PWM 7
1195
1196static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1197 char *buf)
1198{
1199 struct dme1737_data *data = dme1737_update_device(dev);
1200 struct sensor_device_attribute_2
1201 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1202 int ix = sensor_attr_2->index;
1203 int fn = sensor_attr_2->nr;
1204 int res;
1205
1206 switch (fn) {
1207 case SYS_PWM:
1208 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0)
1209 res = 255;
1210 else
1211 res = data->pwm[ix];
1212 break;
1213 case SYS_PWM_FREQ:
1214 res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
1215 break;
1216 case SYS_PWM_ENABLE:
1217 if (ix >= 3)
1218 res = 1; /* pwm[5-6] hard-wired to manual mode */
1219 else
1220 res = PWM_EN_FROM_REG(data->pwm_config[ix]);
1221 break;
1222 case SYS_PWM_RAMP_RATE:
1223 /* Only valid for pwm[1-3] */
1224 res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix);
1225 break;
1226 case SYS_PWM_AUTO_CHANNELS_ZONE:
1227 /* Only valid for pwm[1-3] */
1228 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2)
1229 res = PWM_ACZ_FROM_REG(data->pwm_config[ix]);
1230 else
1231 res = data->pwm_acz[ix];
1232 break;
1233 case SYS_PWM_AUTO_PWM_MIN:
1234 /* Only valid for pwm[1-3] */
1235 if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix))
1236 res = data->pwm_min[ix];
1237 else
1238 res = 0;
1239 break;
1240 case SYS_PWM_AUTO_POINT1_PWM:
1241 /* Only valid for pwm[1-3] */
1242 res = data->pwm_min[ix];
1243 break;
1244 case SYS_PWM_AUTO_POINT2_PWM:
1245 /* Only valid for pwm[1-3] */
1246 res = 255; /* hard-wired */
1247 break;
1248 default:
1249 res = 0;
1250 dev_dbg(dev, "Unknown function %d.\n", fn);
1251 }
1252
1253 return sprintf(buf, "%d\n", res);
1254}
1255
1256static struct attribute *dme1737_pwm_chmod_attr[];
1257static void dme1737_chmod_file(struct device*, struct attribute*, umode_t);
1258
1259static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1260 const char *buf, size_t count)
1261{
1262 struct dme1737_data *data = dev_get_drvdata(dev);
1263 struct sensor_device_attribute_2
1264 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1265 int ix = sensor_attr_2->index;
1266 int fn = sensor_attr_2->nr;
1267 long val;
1268 int err;
1269
1270 err = kstrtol(buf, 10, &val);
1271 if (err)
1272 return err;
1273
1274 mutex_lock(&data->update_lock);
1275 switch (fn) {
1276 case SYS_PWM:
1277 data->pwm[ix] = clamp_val(val, 0, 255);
1278 dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]);
1279 break;
1280 case SYS_PWM_FREQ:
1281 data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data,
1282 DME1737_REG_PWM_FREQ(ix)));
1283 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1284 data->pwm_freq[ix]);
1285 break;
1286 case SYS_PWM_ENABLE:
1287 /* Only valid for pwm[1-3] */
1288 if (val < 0 || val > 2) {
1289 count = -EINVAL;
1290 dev_warn(dev,
1291 "PWM enable %ld not supported. Choose one of 0, 1, or 2.\n",
1292 val);
1293 goto exit;
1294 }
1295 /* Refresh the cache */
1296 data->pwm_config[ix] = dme1737_read(data,
1297 DME1737_REG_PWM_CONFIG(ix));
1298 if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) {
1299 /* Bail out if no change */
1300 goto exit;
1301 }
1302 /* Do some housekeeping if we are currently in auto mode */
1303 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1304 /* Save the current zone channel assignment */
1305 data->pwm_acz[ix] = PWM_ACZ_FROM_REG(
1306 data->pwm_config[ix]);
1307 /* Save the current ramp rate state and disable it */
1308 data->pwm_rr[ix > 0] = dme1737_read(data,
1309 DME1737_REG_PWM_RR(ix > 0));
1310 data->pwm_rr_en &= ~(1 << ix);
1311 if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) {
1312 data->pwm_rr_en |= (1 << ix);
1313 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix,
1314 data->pwm_rr[ix > 0]);
1315 dme1737_write(data,
1316 DME1737_REG_PWM_RR(ix > 0),
1317 data->pwm_rr[ix > 0]);
1318 }
1319 }
1320 /* Set the new PWM mode */
1321 switch (val) {
1322 case 0:
1323 /* Change permissions of pwm[ix] to read-only */
1324 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1325 S_IRUGO);
1326 /* Turn fan fully on */
1327 data->pwm_config[ix] = PWM_EN_TO_REG(0,
1328 data->pwm_config[ix]);
1329 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1330 data->pwm_config[ix]);
1331 break;
1332 case 1:
1333 /* Turn on manual mode */
1334 data->pwm_config[ix] = PWM_EN_TO_REG(1,
1335 data->pwm_config[ix]);
1336 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1337 data->pwm_config[ix]);
1338 /* Change permissions of pwm[ix] to read-writeable */
1339 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1340 S_IRUGO | S_IWUSR);
1341 break;
1342 case 2:
1343 /* Change permissions of pwm[ix] to read-only */
1344 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1345 S_IRUGO);
1346 /*
1347 * Turn on auto mode using the saved zone channel
1348 * assignment
1349 */
1350 data->pwm_config[ix] = PWM_ACZ_TO_REG(
1351 data->pwm_acz[ix],
1352 data->pwm_config[ix]);
1353 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1354 data->pwm_config[ix]);
1355 /* Enable PWM ramp rate if previously enabled */
1356 if (data->pwm_rr_en & (1 << ix)) {
1357 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix,
1358 dme1737_read(data,
1359 DME1737_REG_PWM_RR(ix > 0)));
1360 dme1737_write(data,
1361 DME1737_REG_PWM_RR(ix > 0),
1362 data->pwm_rr[ix > 0]);
1363 }
1364 break;
1365 }
1366 break;
1367 case SYS_PWM_RAMP_RATE:
1368 /* Only valid for pwm[1-3] */
1369 /* Refresh the cache */
1370 data->pwm_config[ix] = dme1737_read(data,
1371 DME1737_REG_PWM_CONFIG(ix));
1372 data->pwm_rr[ix > 0] = dme1737_read(data,
1373 DME1737_REG_PWM_RR(ix > 0));
1374 /* Set the ramp rate value */
1375 if (val > 0) {
1376 data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix,
1377 data->pwm_rr[ix > 0]);
1378 }
1379 /*
1380 * Enable/disable the feature only if the associated PWM
1381 * output is in automatic mode.
1382 */
1383 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1384 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix,
1385 data->pwm_rr[ix > 0]);
1386 }
1387 dme1737_write(data, DME1737_REG_PWM_RR(ix > 0),
1388 data->pwm_rr[ix > 0]);
1389 break;
1390 case SYS_PWM_AUTO_CHANNELS_ZONE:
1391 /* Only valid for pwm[1-3] */
1392 if (!(val == 1 || val == 2 || val == 4 ||
1393 val == 6 || val == 7)) {
1394 count = -EINVAL;
1395 dev_warn(dev,
1396 "PWM auto channels zone %ld not supported. Choose one of 1, 2, 4, 6, "
1397 "or 7.\n", val);
1398 goto exit;
1399 }
1400 /* Refresh the cache */
1401 data->pwm_config[ix] = dme1737_read(data,
1402 DME1737_REG_PWM_CONFIG(ix));
1403 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1404 /*
1405 * PWM is already in auto mode so update the temp
1406 * channel assignment
1407 */
1408 data->pwm_config[ix] = PWM_ACZ_TO_REG(val,
1409 data->pwm_config[ix]);
1410 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1411 data->pwm_config[ix]);
1412 } else {
1413 /*
1414 * PWM is not in auto mode so we save the temp
1415 * channel assignment for later use
1416 */
1417 data->pwm_acz[ix] = val;
1418 }
1419 break;
1420 case SYS_PWM_AUTO_PWM_MIN:
1421 /* Only valid for pwm[1-3] */
1422 /* Refresh the cache */
1423 data->pwm_min[ix] = dme1737_read(data,
1424 DME1737_REG_PWM_MIN(ix));
1425 /*
1426 * There are only 2 values supported for the auto_pwm_min
1427 * value: 0 or auto_point1_pwm. So if the temperature drops
1428 * below the auto_point1_temp_hyst value, the fan either turns
1429 * off or runs at auto_point1_pwm duty-cycle.
1430 */
1431 if (val > ((data->pwm_min[ix] + 1) / 2)) {
1432 data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
1433 dme1737_read(data,
1434 DME1737_REG_PWM_RR(0)));
1435 } else {
1436 data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
1437 dme1737_read(data,
1438 DME1737_REG_PWM_RR(0)));
1439 }
1440 dme1737_write(data, DME1737_REG_PWM_RR(0),
1441 data->pwm_rr[0]);
1442 break;
1443 case SYS_PWM_AUTO_POINT1_PWM:
1444 /* Only valid for pwm[1-3] */
1445 data->pwm_min[ix] = clamp_val(val, 0, 255);
1446 dme1737_write(data, DME1737_REG_PWM_MIN(ix),
1447 data->pwm_min[ix]);
1448 break;
1449 default:
1450 dev_dbg(dev, "Unknown function %d.\n", fn);
1451 }
1452exit:
1453 mutex_unlock(&data->update_lock);
1454
1455 return count;
1456}
1457
1458/* ---------------------------------------------------------------------
1459 * Miscellaneous sysfs attributes
1460 * --------------------------------------------------------------------- */
1461
1462static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
1463 char *buf)
1464{
1465 struct i2c_client *client = to_i2c_client(dev);
1466 struct dme1737_data *data = i2c_get_clientdata(client);
1467
1468 return sprintf(buf, "%d\n", data->vrm);
1469}
1470
1471static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
1472 const char *buf, size_t count)
1473{
1474 struct dme1737_data *data = dev_get_drvdata(dev);
1475 unsigned long val;
1476 int err;
1477
1478 err = kstrtoul(buf, 10, &val);
1479 if (err)
1480 return err;
1481
1482 if (val > 255)
1483 return -EINVAL;
1484
1485 data->vrm = val;
1486 return count;
1487}
1488
1489static ssize_t cpu0_vid_show(struct device *dev,
1490 struct device_attribute *attr, char *buf)
1491{
1492 struct dme1737_data *data = dme1737_update_device(dev);
1493
1494 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1495}
1496
1497static ssize_t name_show(struct device *dev, struct device_attribute *attr,
1498 char *buf)
1499{
1500 struct dme1737_data *data = dev_get_drvdata(dev);
1501
1502 return sprintf(buf, "%s\n", data->name);
1503}
1504
1505/* ---------------------------------------------------------------------
1506 * Sysfs device attribute defines and structs
1507 * --------------------------------------------------------------------- */
1508
1509/* Voltages 0-7 */
1510
1511#define SENSOR_DEVICE_ATTR_IN(ix) \
1512static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
1513 show_in, NULL, SYS_IN_INPUT, ix); \
1514static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
1515 show_in, set_in, SYS_IN_MIN, ix); \
1516static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
1517 show_in, set_in, SYS_IN_MAX, ix); \
1518static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
1519 show_in, NULL, SYS_IN_ALARM, ix)
1520
1521SENSOR_DEVICE_ATTR_IN(0);
1522SENSOR_DEVICE_ATTR_IN(1);
1523SENSOR_DEVICE_ATTR_IN(2);
1524SENSOR_DEVICE_ATTR_IN(3);
1525SENSOR_DEVICE_ATTR_IN(4);
1526SENSOR_DEVICE_ATTR_IN(5);
1527SENSOR_DEVICE_ATTR_IN(6);
1528SENSOR_DEVICE_ATTR_IN(7);
1529
1530/* Temperatures 1-3 */
1531
1532#define SENSOR_DEVICE_ATTR_TEMP(ix) \
1533static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
1534 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
1535static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
1536 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
1537static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
1538 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
1539static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
1540 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
1541static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
1542 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
1543static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
1544 show_temp, NULL, SYS_TEMP_FAULT, ix-1)
1545
1546SENSOR_DEVICE_ATTR_TEMP(1);
1547SENSOR_DEVICE_ATTR_TEMP(2);
1548SENSOR_DEVICE_ATTR_TEMP(3);
1549
1550/* Zones 1-3 */
1551
1552#define SENSOR_DEVICE_ATTR_ZONE(ix) \
1553static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
1554 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
1555static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
1556 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
1557static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
1558 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
1559static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
1560 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
1561static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
1562 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
1563
1564SENSOR_DEVICE_ATTR_ZONE(1);
1565SENSOR_DEVICE_ATTR_ZONE(2);
1566SENSOR_DEVICE_ATTR_ZONE(3);
1567
1568/* Fans 1-4 */
1569
1570#define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
1571static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1572 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1573static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1574 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1575static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1576 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1577static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
1578 show_fan, set_fan, SYS_FAN_TYPE, ix-1)
1579
1580SENSOR_DEVICE_ATTR_FAN_1TO4(1);
1581SENSOR_DEVICE_ATTR_FAN_1TO4(2);
1582SENSOR_DEVICE_ATTR_FAN_1TO4(3);
1583SENSOR_DEVICE_ATTR_FAN_1TO4(4);
1584
1585/* Fans 5-6 */
1586
1587#define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
1588static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1589 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1590static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1591 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1592static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1593 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1594static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
1595 show_fan, set_fan, SYS_FAN_MAX, ix-1)
1596
1597SENSOR_DEVICE_ATTR_FAN_5TO6(5);
1598SENSOR_DEVICE_ATTR_FAN_5TO6(6);
1599
1600/* PWMs 1-3 */
1601
1602#define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
1603static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1604 show_pwm, set_pwm, SYS_PWM, ix-1); \
1605static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1606 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1607static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1608 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
1609static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
1610 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
1611static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
1612 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
1613static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
1614 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
1615static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
1616 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
1617static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
1618 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
1619
1620SENSOR_DEVICE_ATTR_PWM_1TO3(1);
1621SENSOR_DEVICE_ATTR_PWM_1TO3(2);
1622SENSOR_DEVICE_ATTR_PWM_1TO3(3);
1623
1624/* PWMs 5-6 */
1625
1626#define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
1627static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1628 show_pwm, set_pwm, SYS_PWM, ix-1); \
1629static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1630 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1631static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1632 show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
1633
1634SENSOR_DEVICE_ATTR_PWM_5TO6(5);
1635SENSOR_DEVICE_ATTR_PWM_5TO6(6);
1636
1637/* Misc */
1638
1639static DEVICE_ATTR_RW(vrm);
1640static DEVICE_ATTR_RO(cpu0_vid);
1641static DEVICE_ATTR_RO(name); /* for ISA devices */
1642
1643/*
1644 * This struct holds all the attributes that are always present and need to be
1645 * created unconditionally. The attributes that need modification of their
1646 * permissions are created read-only and write permissions are added or removed
1647 * on the fly when required
1648 */
1649static struct attribute *dme1737_attr[] = {
1650 /* Voltages */
1651 &sensor_dev_attr_in0_input.dev_attr.attr,
1652 &sensor_dev_attr_in0_min.dev_attr.attr,
1653 &sensor_dev_attr_in0_max.dev_attr.attr,
1654 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1655 &sensor_dev_attr_in1_input.dev_attr.attr,
1656 &sensor_dev_attr_in1_min.dev_attr.attr,
1657 &sensor_dev_attr_in1_max.dev_attr.attr,
1658 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1659 &sensor_dev_attr_in2_input.dev_attr.attr,
1660 &sensor_dev_attr_in2_min.dev_attr.attr,
1661 &sensor_dev_attr_in2_max.dev_attr.attr,
1662 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1663 &sensor_dev_attr_in3_input.dev_attr.attr,
1664 &sensor_dev_attr_in3_min.dev_attr.attr,
1665 &sensor_dev_attr_in3_max.dev_attr.attr,
1666 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1667 &sensor_dev_attr_in4_input.dev_attr.attr,
1668 &sensor_dev_attr_in4_min.dev_attr.attr,
1669 &sensor_dev_attr_in4_max.dev_attr.attr,
1670 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1671 &sensor_dev_attr_in5_input.dev_attr.attr,
1672 &sensor_dev_attr_in5_min.dev_attr.attr,
1673 &sensor_dev_attr_in5_max.dev_attr.attr,
1674 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1675 &sensor_dev_attr_in6_input.dev_attr.attr,
1676 &sensor_dev_attr_in6_min.dev_attr.attr,
1677 &sensor_dev_attr_in6_max.dev_attr.attr,
1678 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1679 /* Temperatures */
1680 &sensor_dev_attr_temp1_input.dev_attr.attr,
1681 &sensor_dev_attr_temp1_min.dev_attr.attr,
1682 &sensor_dev_attr_temp1_max.dev_attr.attr,
1683 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1684 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1685 &sensor_dev_attr_temp2_input.dev_attr.attr,
1686 &sensor_dev_attr_temp2_min.dev_attr.attr,
1687 &sensor_dev_attr_temp2_max.dev_attr.attr,
1688 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1689 &sensor_dev_attr_temp2_fault.dev_attr.attr,
1690 &sensor_dev_attr_temp3_input.dev_attr.attr,
1691 &sensor_dev_attr_temp3_min.dev_attr.attr,
1692 &sensor_dev_attr_temp3_max.dev_attr.attr,
1693 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1694 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1695 /* Zones */
1696 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1697 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1698 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1699 &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr,
1700 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1701 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1702 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1703 &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
1704 NULL
1705};
1706
1707static const struct attribute_group dme1737_group = {
1708 .attrs = dme1737_attr,
1709};
1710
1711/*
1712 * The following struct holds temp offset attributes, which are not available
1713 * in all chips. The following chips support them:
1714 * DME1737, SCH311x
1715 */
1716static struct attribute *dme1737_temp_offset_attr[] = {
1717 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1718 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1719 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1720 NULL
1721};
1722
1723static const struct attribute_group dme1737_temp_offset_group = {
1724 .attrs = dme1737_temp_offset_attr,
1725};
1726
1727/*
1728 * The following struct holds VID related attributes, which are not available
1729 * in all chips. The following chips support them:
1730 * DME1737
1731 */
1732static struct attribute *dme1737_vid_attr[] = {
1733 &dev_attr_vrm.attr,
1734 &dev_attr_cpu0_vid.attr,
1735 NULL
1736};
1737
1738static const struct attribute_group dme1737_vid_group = {
1739 .attrs = dme1737_vid_attr,
1740};
1741
1742/*
1743 * The following struct holds temp zone 3 related attributes, which are not
1744 * available in all chips. The following chips support them:
1745 * DME1737, SCH311x, SCH5027
1746 */
1747static struct attribute *dme1737_zone3_attr[] = {
1748 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1749 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1750 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1751 &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
1752 NULL
1753};
1754
1755static const struct attribute_group dme1737_zone3_group = {
1756 .attrs = dme1737_zone3_attr,
1757};
1758
1759
1760/*
1761 * The following struct holds temp zone hysteresis related attributes, which
1762 * are not available in all chips. The following chips support them:
1763 * DME1737, SCH311x
1764 */
1765static struct attribute *dme1737_zone_hyst_attr[] = {
1766 &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
1767 &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
1768 &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
1769 NULL
1770};
1771
1772static const struct attribute_group dme1737_zone_hyst_group = {
1773 .attrs = dme1737_zone_hyst_attr,
1774};
1775
1776/*
1777 * The following struct holds voltage in7 related attributes, which
1778 * are not available in all chips. The following chips support them:
1779 * SCH5127
1780 */
1781static struct attribute *dme1737_in7_attr[] = {
1782 &sensor_dev_attr_in7_input.dev_attr.attr,
1783 &sensor_dev_attr_in7_min.dev_attr.attr,
1784 &sensor_dev_attr_in7_max.dev_attr.attr,
1785 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1786 NULL
1787};
1788
1789static const struct attribute_group dme1737_in7_group = {
1790 .attrs = dme1737_in7_attr,
1791};
1792
1793/*
1794 * The following structs hold the PWM attributes, some of which are optional.
1795 * Their creation depends on the chip configuration which is determined during
1796 * module load.
1797 */
1798static struct attribute *dme1737_pwm1_attr[] = {
1799 &sensor_dev_attr_pwm1.dev_attr.attr,
1800 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1801 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1802 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1803 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1804 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1805 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1806 NULL
1807};
1808static struct attribute *dme1737_pwm2_attr[] = {
1809 &sensor_dev_attr_pwm2.dev_attr.attr,
1810 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1811 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1812 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1813 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1814 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1815 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1816 NULL
1817};
1818static struct attribute *dme1737_pwm3_attr[] = {
1819 &sensor_dev_attr_pwm3.dev_attr.attr,
1820 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1821 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1822 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1823 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1824 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1825 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1826 NULL
1827};
1828static struct attribute *dme1737_pwm5_attr[] = {
1829 &sensor_dev_attr_pwm5.dev_attr.attr,
1830 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1831 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
1832 NULL
1833};
1834static struct attribute *dme1737_pwm6_attr[] = {
1835 &sensor_dev_attr_pwm6.dev_attr.attr,
1836 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1837 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
1838 NULL
1839};
1840
1841static const struct attribute_group dme1737_pwm_group[] = {
1842 { .attrs = dme1737_pwm1_attr },
1843 { .attrs = dme1737_pwm2_attr },
1844 { .attrs = dme1737_pwm3_attr },
1845 { .attrs = NULL },
1846 { .attrs = dme1737_pwm5_attr },
1847 { .attrs = dme1737_pwm6_attr },
1848};
1849
1850/*
1851 * The following struct holds auto PWM min attributes, which are not available
1852 * in all chips. Their creation depends on the chip type which is determined
1853 * during module load.
1854 */
1855static struct attribute *dme1737_auto_pwm_min_attr[] = {
1856 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1857 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1858 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1859};
1860
1861/*
1862 * The following structs hold the fan attributes, some of which are optional.
1863 * Their creation depends on the chip configuration which is determined during
1864 * module load.
1865 */
1866static struct attribute *dme1737_fan1_attr[] = {
1867 &sensor_dev_attr_fan1_input.dev_attr.attr,
1868 &sensor_dev_attr_fan1_min.dev_attr.attr,
1869 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1870 &sensor_dev_attr_fan1_type.dev_attr.attr,
1871 NULL
1872};
1873static struct attribute *dme1737_fan2_attr[] = {
1874 &sensor_dev_attr_fan2_input.dev_attr.attr,
1875 &sensor_dev_attr_fan2_min.dev_attr.attr,
1876 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1877 &sensor_dev_attr_fan2_type.dev_attr.attr,
1878 NULL
1879};
1880static struct attribute *dme1737_fan3_attr[] = {
1881 &sensor_dev_attr_fan3_input.dev_attr.attr,
1882 &sensor_dev_attr_fan3_min.dev_attr.attr,
1883 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1884 &sensor_dev_attr_fan3_type.dev_attr.attr,
1885 NULL
1886};
1887static struct attribute *dme1737_fan4_attr[] = {
1888 &sensor_dev_attr_fan4_input.dev_attr.attr,
1889 &sensor_dev_attr_fan4_min.dev_attr.attr,
1890 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1891 &sensor_dev_attr_fan4_type.dev_attr.attr,
1892 NULL
1893};
1894static struct attribute *dme1737_fan5_attr[] = {
1895 &sensor_dev_attr_fan5_input.dev_attr.attr,
1896 &sensor_dev_attr_fan5_min.dev_attr.attr,
1897 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1898 &sensor_dev_attr_fan5_max.dev_attr.attr,
1899 NULL
1900};
1901static struct attribute *dme1737_fan6_attr[] = {
1902 &sensor_dev_attr_fan6_input.dev_attr.attr,
1903 &sensor_dev_attr_fan6_min.dev_attr.attr,
1904 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1905 &sensor_dev_attr_fan6_max.dev_attr.attr,
1906 NULL
1907};
1908
1909static const struct attribute_group dme1737_fan_group[] = {
1910 { .attrs = dme1737_fan1_attr },
1911 { .attrs = dme1737_fan2_attr },
1912 { .attrs = dme1737_fan3_attr },
1913 { .attrs = dme1737_fan4_attr },
1914 { .attrs = dme1737_fan5_attr },
1915 { .attrs = dme1737_fan6_attr },
1916};
1917
1918/*
1919 * The permissions of the following zone attributes are changed to read-
1920 * writeable if the chip is *not* locked. Otherwise they stay read-only.
1921 */
1922static struct attribute *dme1737_zone_chmod_attr[] = {
1923 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1924 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1925 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1926 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1927 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1928 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1929 NULL
1930};
1931
1932static const struct attribute_group dme1737_zone_chmod_group = {
1933 .attrs = dme1737_zone_chmod_attr,
1934};
1935
1936
1937/*
1938 * The permissions of the following zone 3 attributes are changed to read-
1939 * writeable if the chip is *not* locked. Otherwise they stay read-only.
1940 */
1941static struct attribute *dme1737_zone3_chmod_attr[] = {
1942 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1943 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1944 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1945 NULL
1946};
1947
1948static const struct attribute_group dme1737_zone3_chmod_group = {
1949 .attrs = dme1737_zone3_chmod_attr,
1950};
1951
1952/*
1953 * The permissions of the following PWM attributes are changed to read-
1954 * writeable if the chip is *not* locked and the respective PWM is available.
1955 * Otherwise they stay read-only.
1956 */
1957static struct attribute *dme1737_pwm1_chmod_attr[] = {
1958 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1959 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1960 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1961 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1962 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1963 NULL
1964};
1965static struct attribute *dme1737_pwm2_chmod_attr[] = {
1966 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1967 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1968 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1969 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1970 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1971 NULL
1972};
1973static struct attribute *dme1737_pwm3_chmod_attr[] = {
1974 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1975 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1976 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1977 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1978 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1979 NULL
1980};
1981static struct attribute *dme1737_pwm5_chmod_attr[] = {
1982 &sensor_dev_attr_pwm5.dev_attr.attr,
1983 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1984 NULL
1985};
1986static struct attribute *dme1737_pwm6_chmod_attr[] = {
1987 &sensor_dev_attr_pwm6.dev_attr.attr,
1988 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1989 NULL
1990};
1991
1992static const struct attribute_group dme1737_pwm_chmod_group[] = {
1993 { .attrs = dme1737_pwm1_chmod_attr },
1994 { .attrs = dme1737_pwm2_chmod_attr },
1995 { .attrs = dme1737_pwm3_chmod_attr },
1996 { .attrs = NULL },
1997 { .attrs = dme1737_pwm5_chmod_attr },
1998 { .attrs = dme1737_pwm6_chmod_attr },
1999};
2000
2001/*
2002 * Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
2003 * chip is not locked. Otherwise they are read-only.
2004 */
2005static struct attribute *dme1737_pwm_chmod_attr[] = {
2006 &sensor_dev_attr_pwm1.dev_attr.attr,
2007 &sensor_dev_attr_pwm2.dev_attr.attr,
2008 &sensor_dev_attr_pwm3.dev_attr.attr,
2009};
2010
2011/* ---------------------------------------------------------------------
2012 * Super-IO functions
2013 * --------------------------------------------------------------------- */
2014
2015static inline void dme1737_sio_enter(int sio_cip)
2016{
2017 outb(0x55, sio_cip);
2018}
2019
2020static inline void dme1737_sio_exit(int sio_cip)
2021{
2022 outb(0xaa, sio_cip);
2023}
2024
2025static inline int dme1737_sio_inb(int sio_cip, int reg)
2026{
2027 outb(reg, sio_cip);
2028 return inb(sio_cip + 1);
2029}
2030
2031static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
2032{
2033 outb(reg, sio_cip);
2034 outb(val, sio_cip + 1);
2035}
2036
2037/* ---------------------------------------------------------------------
2038 * Device initialization
2039 * --------------------------------------------------------------------- */
2040
2041static int dme1737_i2c_get_features(int, struct dme1737_data*);
2042
2043static void dme1737_chmod_file(struct device *dev,
2044 struct attribute *attr, umode_t mode)
2045{
2046 if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
2047 dev_warn(dev, "Failed to change permissions of %s.\n",
2048 attr->name);
2049 }
2050}
2051
2052static void dme1737_chmod_group(struct device *dev,
2053 const struct attribute_group *group,
2054 umode_t mode)
2055{
2056 struct attribute **attr;
2057
2058 for (attr = group->attrs; *attr; attr++)
2059 dme1737_chmod_file(dev, *attr, mode);
2060}
2061
2062static void dme1737_remove_files(struct device *dev)
2063{
2064 struct dme1737_data *data = dev_get_drvdata(dev);
2065 int ix;
2066
2067 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
2068 if (data->has_features & HAS_FAN(ix)) {
2069 sysfs_remove_group(&dev->kobj,
2070 &dme1737_fan_group[ix]);
2071 }
2072 }
2073
2074 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
2075 if (data->has_features & HAS_PWM(ix)) {
2076 sysfs_remove_group(&dev->kobj,
2077 &dme1737_pwm_group[ix]);
2078 if ((data->has_features & HAS_PWM_MIN) && ix < 3) {
2079 sysfs_remove_file(&dev->kobj,
2080 dme1737_auto_pwm_min_attr[ix]);
2081 }
2082 }
2083 }
2084
2085 if (data->has_features & HAS_TEMP_OFFSET)
2086 sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group);
2087 if (data->has_features & HAS_VID)
2088 sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
2089 if (data->has_features & HAS_ZONE3)
2090 sysfs_remove_group(&dev->kobj, &dme1737_zone3_group);
2091 if (data->has_features & HAS_ZONE_HYST)
2092 sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group);
2093 if (data->has_features & HAS_IN7)
2094 sysfs_remove_group(&dev->kobj, &dme1737_in7_group);
2095 sysfs_remove_group(&dev->kobj, &dme1737_group);
2096
2097 if (!data->client)
2098 sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
2099}
2100
2101static int dme1737_create_files(struct device *dev)
2102{
2103 struct dme1737_data *data = dev_get_drvdata(dev);
2104 int err, ix;
2105
2106 /* Create a name attribute for ISA devices */
2107 if (!data->client) {
2108 err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr);
2109 if (err)
2110 goto exit;
2111 }
2112
2113 /* Create standard sysfs attributes */
2114 err = sysfs_create_group(&dev->kobj, &dme1737_group);
2115 if (err)
2116 goto exit_remove;
2117
2118 /* Create chip-dependent sysfs attributes */
2119 if (data->has_features & HAS_TEMP_OFFSET) {
2120 err = sysfs_create_group(&dev->kobj,
2121 &dme1737_temp_offset_group);
2122 if (err)
2123 goto exit_remove;
2124 }
2125 if (data->has_features & HAS_VID) {
2126 err = sysfs_create_group(&dev->kobj, &dme1737_vid_group);
2127 if (err)
2128 goto exit_remove;
2129 }
2130 if (data->has_features & HAS_ZONE3) {
2131 err = sysfs_create_group(&dev->kobj, &dme1737_zone3_group);
2132 if (err)
2133 goto exit_remove;
2134 }
2135 if (data->has_features & HAS_ZONE_HYST) {
2136 err = sysfs_create_group(&dev->kobj, &dme1737_zone_hyst_group);
2137 if (err)
2138 goto exit_remove;
2139 }
2140 if (data->has_features & HAS_IN7) {
2141 err = sysfs_create_group(&dev->kobj, &dme1737_in7_group);
2142 if (err)
2143 goto exit_remove;
2144 }
2145
2146 /* Create fan sysfs attributes */
2147 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
2148 if (data->has_features & HAS_FAN(ix)) {
2149 err = sysfs_create_group(&dev->kobj,
2150 &dme1737_fan_group[ix]);
2151 if (err)
2152 goto exit_remove;
2153 }
2154 }
2155
2156 /* Create PWM sysfs attributes */
2157 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
2158 if (data->has_features & HAS_PWM(ix)) {
2159 err = sysfs_create_group(&dev->kobj,
2160 &dme1737_pwm_group[ix]);
2161 if (err)
2162 goto exit_remove;
2163 if ((data->has_features & HAS_PWM_MIN) && (ix < 3)) {
2164 err = sysfs_create_file(&dev->kobj,
2165 dme1737_auto_pwm_min_attr[ix]);
2166 if (err)
2167 goto exit_remove;
2168 }
2169 }
2170 }
2171
2172 /*
2173 * Inform if the device is locked. Otherwise change the permissions of
2174 * selected attributes from read-only to read-writeable.
2175 */
2176 if (data->config & 0x02) {
2177 dev_info(dev,
2178 "Device is locked. Some attributes will be read-only.\n");
2179 } else {
2180 /* Change permissions of zone sysfs attributes */
2181 dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
2182 S_IRUGO | S_IWUSR);
2183
2184 /* Change permissions of chip-dependent sysfs attributes */
2185 if (data->has_features & HAS_TEMP_OFFSET) {
2186 dme1737_chmod_group(dev, &dme1737_temp_offset_group,
2187 S_IRUGO | S_IWUSR);
2188 }
2189 if (data->has_features & HAS_ZONE3) {
2190 dme1737_chmod_group(dev, &dme1737_zone3_chmod_group,
2191 S_IRUGO | S_IWUSR);
2192 }
2193 if (data->has_features & HAS_ZONE_HYST) {
2194 dme1737_chmod_group(dev, &dme1737_zone_hyst_group,
2195 S_IRUGO | S_IWUSR);
2196 }
2197
2198 /* Change permissions of PWM sysfs attributes */
2199 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
2200 if (data->has_features & HAS_PWM(ix)) {
2201 dme1737_chmod_group(dev,
2202 &dme1737_pwm_chmod_group[ix],
2203 S_IRUGO | S_IWUSR);
2204 if ((data->has_features & HAS_PWM_MIN) &&
2205 ix < 3) {
2206 dme1737_chmod_file(dev,
2207 dme1737_auto_pwm_min_attr[ix],
2208 S_IRUGO | S_IWUSR);
2209 }
2210 }
2211 }
2212
2213 /* Change permissions of pwm[1-3] if in manual mode */
2214 for (ix = 0; ix < 3; ix++) {
2215 if ((data->has_features & HAS_PWM(ix)) &&
2216 (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
2217 dme1737_chmod_file(dev,
2218 dme1737_pwm_chmod_attr[ix],
2219 S_IRUGO | S_IWUSR);
2220 }
2221 }
2222 }
2223
2224 return 0;
2225
2226exit_remove:
2227 dme1737_remove_files(dev);
2228exit:
2229 return err;
2230}
2231
2232static int dme1737_init_device(struct device *dev)
2233{
2234 struct dme1737_data *data = dev_get_drvdata(dev);
2235 struct i2c_client *client = data->client;
2236 int ix;
2237 u8 reg;
2238
2239 /* Point to the right nominal voltages array */
2240 data->in_nominal = IN_NOMINAL(data->type);
2241
2242 data->config = dme1737_read(data, DME1737_REG_CONFIG);
2243 /* Inform if part is not monitoring/started */
2244 if (!(data->config & 0x01)) {
2245 if (!force_start) {
2246 dev_err(dev,
2247 "Device is not monitoring. Use the force_start load parameter to override.\n");
2248 return -EFAULT;
2249 }
2250
2251 /* Force monitoring */
2252 data->config |= 0x01;
2253 dme1737_write(data, DME1737_REG_CONFIG, data->config);
2254 }
2255 /* Inform if part is not ready */
2256 if (!(data->config & 0x04)) {
2257 dev_err(dev, "Device is not ready.\n");
2258 return -EFAULT;
2259 }
2260
2261 /*
2262 * Determine which optional fan and pwm features are enabled (only
2263 * valid for I2C devices)
2264 */
2265 if (client) { /* I2C chip */
2266 data->config2 = dme1737_read(data, DME1737_REG_CONFIG2);
2267 /* Check if optional fan3 input is enabled */
2268 if (data->config2 & 0x04)
2269 data->has_features |= HAS_FAN(2);
2270
2271 /*
2272 * Fan4 and pwm3 are only available if the client's I2C address
2273 * is the default 0x2e. Otherwise the I/Os associated with
2274 * these functions are used for addr enable/select.
2275 */
2276 if (client->addr == 0x2e)
2277 data->has_features |= HAS_FAN(3) | HAS_PWM(2);
2278
2279 /*
2280 * Determine which of the optional fan[5-6] and pwm[5-6]
2281 * features are enabled. For this, we need to query the runtime
2282 * registers through the Super-IO LPC interface. Try both
2283 * config ports 0x2e and 0x4e.
2284 */
2285 if (dme1737_i2c_get_features(0x2e, data) &&
2286 dme1737_i2c_get_features(0x4e, data)) {
2287 dev_warn(dev,
2288 "Failed to query Super-IO for optional features.\n");
2289 }
2290 }
2291
2292 /* Fan[1-2] and pwm[1-2] are present in all chips */
2293 data->has_features |= HAS_FAN(0) | HAS_FAN(1) | HAS_PWM(0) | HAS_PWM(1);
2294
2295 /* Chip-dependent features */
2296 switch (data->type) {
2297 case dme1737:
2298 data->has_features |= HAS_TEMP_OFFSET | HAS_VID | HAS_ZONE3 |
2299 HAS_ZONE_HYST | HAS_PWM_MIN;
2300 break;
2301 case sch311x:
2302 data->has_features |= HAS_TEMP_OFFSET | HAS_ZONE3 |
2303 HAS_ZONE_HYST | HAS_PWM_MIN | HAS_FAN(2) | HAS_PWM(2);
2304 break;
2305 case sch5027:
2306 data->has_features |= HAS_ZONE3;
2307 break;
2308 case sch5127:
2309 data->has_features |= HAS_FAN(2) | HAS_PWM(2) | HAS_IN7;
2310 break;
2311 default:
2312 break;
2313 }
2314
2315 dev_info(dev,
2316 "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
2317 (data->has_features & HAS_PWM(2)) ? "yes" : "no",
2318 (data->has_features & HAS_PWM(4)) ? "yes" : "no",
2319 (data->has_features & HAS_PWM(5)) ? "yes" : "no",
2320 (data->has_features & HAS_FAN(2)) ? "yes" : "no",
2321 (data->has_features & HAS_FAN(3)) ? "yes" : "no",
2322 (data->has_features & HAS_FAN(4)) ? "yes" : "no",
2323 (data->has_features & HAS_FAN(5)) ? "yes" : "no");
2324
2325 reg = dme1737_read(data, DME1737_REG_TACH_PWM);
2326 /* Inform if fan-to-pwm mapping differs from the default */
2327 if (client && reg != 0xa4) { /* I2C chip */
2328 dev_warn(dev,
2329 "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, fan4->pwm%d. %s\n",
2330 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2331 ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1,
2332 DO_REPORT);
2333 } else if (!client && reg != 0x24) { /* ISA chip */
2334 dev_warn(dev,
2335 "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. %s\n",
2336 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2337 ((reg >> 4) & 0x03) + 1, DO_REPORT);
2338 }
2339
2340 /*
2341 * Switch pwm[1-3] to manual mode if they are currently disabled and
2342 * set the duty-cycles to 0% (which is identical to the PWMs being
2343 * disabled).
2344 */
2345 if (!(data->config & 0x02)) {
2346 for (ix = 0; ix < 3; ix++) {
2347 data->pwm_config[ix] = dme1737_read(data,
2348 DME1737_REG_PWM_CONFIG(ix));
2349 if ((data->has_features & HAS_PWM(ix)) &&
2350 (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
2351 dev_info(dev,
2352 "Switching pwm%d to manual mode.\n",
2353 ix + 1);
2354 data->pwm_config[ix] = PWM_EN_TO_REG(1,
2355 data->pwm_config[ix]);
2356 dme1737_write(data, DME1737_REG_PWM(ix), 0);
2357 dme1737_write(data,
2358 DME1737_REG_PWM_CONFIG(ix),
2359 data->pwm_config[ix]);
2360 }
2361 }
2362 }
2363
2364 /* Initialize the default PWM auto channels zone (acz) assignments */
2365 data->pwm_acz[0] = 1; /* pwm1 -> zone1 */
2366 data->pwm_acz[1] = 2; /* pwm2 -> zone2 */
2367 data->pwm_acz[2] = 4; /* pwm3 -> zone3 */
2368
2369 /* Set VRM */
2370 if (data->has_features & HAS_VID)
2371 data->vrm = vid_which_vrm();
2372
2373 return 0;
2374}
2375
2376/* ---------------------------------------------------------------------
2377 * I2C device detection and registration
2378 * --------------------------------------------------------------------- */
2379
2380static struct i2c_driver dme1737_i2c_driver;
2381
2382static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
2383{
2384 int err = 0, reg;
2385 u16 addr;
2386
2387 dme1737_sio_enter(sio_cip);
2388
2389 /*
2390 * Check device ID
2391 * We currently know about two kinds of DME1737 and SCH5027.
2392 */
2393 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2394 if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 ||
2395 reg == SCH5027_ID)) {
2396 err = -ENODEV;
2397 goto exit;
2398 }
2399
2400 /* Select logical device A (runtime registers) */
2401 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2402
2403 /* Get the base address of the runtime registers */
2404 addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2405 dme1737_sio_inb(sio_cip, 0x61);
2406 if (!addr) {
2407 err = -ENODEV;
2408 goto exit;
2409 }
2410
2411 /*
2412 * Read the runtime registers to determine which optional features
2413 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
2414 * to '10' if the respective feature is enabled.
2415 */
2416 if ((inb(addr + 0x43) & 0x0c) == 0x08) /* fan6 */
2417 data->has_features |= HAS_FAN(5);
2418 if ((inb(addr + 0x44) & 0x0c) == 0x08) /* pwm6 */
2419 data->has_features |= HAS_PWM(5);
2420 if ((inb(addr + 0x45) & 0x0c) == 0x08) /* fan5 */
2421 data->has_features |= HAS_FAN(4);
2422 if ((inb(addr + 0x46) & 0x0c) == 0x08) /* pwm5 */
2423 data->has_features |= HAS_PWM(4);
2424
2425exit:
2426 dme1737_sio_exit(sio_cip);
2427
2428 return err;
2429}
2430
2431/* Return 0 if detection is successful, -ENODEV otherwise */
2432static int dme1737_i2c_detect(struct i2c_client *client,
2433 struct i2c_board_info *info)
2434{
2435 struct i2c_adapter *adapter = client->adapter;
2436 struct device *dev = &adapter->dev;
2437 u8 company, verstep = 0;
2438 const char *name;
2439
2440 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
2441 return -ENODEV;
2442
2443 company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY);
2444 verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP);
2445
2446 if (company == DME1737_COMPANY_SMSC &&
2447 verstep == SCH5027_VERSTEP) {
2448 name = "sch5027";
2449 } else if (company == DME1737_COMPANY_SMSC &&
2450 (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
2451 name = "dme1737";
2452 } else {
2453 return -ENODEV;
2454 }
2455
2456 dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n",
2457 verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737",
2458 client->addr, verstep);
2459 strlcpy(info->type, name, I2C_NAME_SIZE);
2460
2461 return 0;
2462}
2463
2464static int dme1737_i2c_probe(struct i2c_client *client,
2465 const struct i2c_device_id *id)
2466{
2467 struct dme1737_data *data;
2468 struct device *dev = &client->dev;
2469 int err;
2470
2471 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
2472 if (!data)
2473 return -ENOMEM;
2474
2475 i2c_set_clientdata(client, data);
2476 data->type = id->driver_data;
2477 data->client = client;
2478 data->name = client->name;
2479 mutex_init(&data->update_lock);
2480
2481 /* Initialize the DME1737 chip */
2482 err = dme1737_init_device(dev);
2483 if (err) {
2484 dev_err(dev, "Failed to initialize device.\n");
2485 return err;
2486 }
2487
2488 /* Create sysfs files */
2489 err = dme1737_create_files(dev);
2490 if (err) {
2491 dev_err(dev, "Failed to create sysfs files.\n");
2492 return err;
2493 }
2494
2495 /* Register device */
2496 data->hwmon_dev = hwmon_device_register(dev);
2497 if (IS_ERR(data->hwmon_dev)) {
2498 dev_err(dev, "Failed to register device.\n");
2499 err = PTR_ERR(data->hwmon_dev);
2500 goto exit_remove;
2501 }
2502
2503 return 0;
2504
2505exit_remove:
2506 dme1737_remove_files(dev);
2507 return err;
2508}
2509
2510static int dme1737_i2c_remove(struct i2c_client *client)
2511{
2512 struct dme1737_data *data = i2c_get_clientdata(client);
2513
2514 hwmon_device_unregister(data->hwmon_dev);
2515 dme1737_remove_files(&client->dev);
2516
2517 return 0;
2518}
2519
2520static const struct i2c_device_id dme1737_id[] = {
2521 { "dme1737", dme1737 },
2522 { "sch5027", sch5027 },
2523 { }
2524};
2525MODULE_DEVICE_TABLE(i2c, dme1737_id);
2526
2527static struct i2c_driver dme1737_i2c_driver = {
2528 .class = I2C_CLASS_HWMON,
2529 .driver = {
2530 .name = "dme1737",
2531 },
2532 .probe = dme1737_i2c_probe,
2533 .remove = dme1737_i2c_remove,
2534 .id_table = dme1737_id,
2535 .detect = dme1737_i2c_detect,
2536 .address_list = normal_i2c,
2537};
2538
2539/* ---------------------------------------------------------------------
2540 * ISA device detection and registration
2541 * --------------------------------------------------------------------- */
2542
2543static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
2544{
2545 int err = 0, reg;
2546 unsigned short base_addr;
2547
2548 dme1737_sio_enter(sio_cip);
2549
2550 /*
2551 * Check device ID
2552 * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127
2553 */
2554 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2555 if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID ||
2556 reg == SCH5127_ID)) {
2557 err = -ENODEV;
2558 goto exit;
2559 }
2560
2561 /* Select logical device A (runtime registers) */
2562 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2563
2564 /* Get the base address of the runtime registers */
2565 base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2566 dme1737_sio_inb(sio_cip, 0x61);
2567 if (!base_addr) {
2568 pr_err("Base address not set\n");
2569 err = -ENODEV;
2570 goto exit;
2571 }
2572
2573 /*
2574 * Access to the hwmon registers is through an index/data register
2575 * pair located at offset 0x70/0x71.
2576 */
2577 *addr = base_addr + 0x70;
2578
2579exit:
2580 dme1737_sio_exit(sio_cip);
2581 return err;
2582}
2583
2584static int __init dme1737_isa_device_add(unsigned short addr)
2585{
2586 struct resource res = {
2587 .start = addr,
2588 .end = addr + DME1737_EXTENT - 1,
2589 .name = "dme1737",
2590 .flags = IORESOURCE_IO,
2591 };
2592 int err;
2593
2594 err = acpi_check_resource_conflict(&res);
2595 if (err)
2596 goto exit;
2597
2598 pdev = platform_device_alloc("dme1737", addr);
2599 if (!pdev) {
2600 pr_err("Failed to allocate device\n");
2601 err = -ENOMEM;
2602 goto exit;
2603 }
2604
2605 err = platform_device_add_resources(pdev, &res, 1);
2606 if (err) {
2607 pr_err("Failed to add device resource (err = %d)\n", err);
2608 goto exit_device_put;
2609 }
2610
2611 err = platform_device_add(pdev);
2612 if (err) {
2613 pr_err("Failed to add device (err = %d)\n", err);
2614 goto exit_device_put;
2615 }
2616
2617 return 0;
2618
2619exit_device_put:
2620 platform_device_put(pdev);
2621 pdev = NULL;
2622exit:
2623 return err;
2624}
2625
2626static int dme1737_isa_probe(struct platform_device *pdev)
2627{
2628 u8 company, device;
2629 struct resource *res;
2630 struct dme1737_data *data;
2631 struct device *dev = &pdev->dev;
2632 int err;
2633
2634 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2635 if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) {
2636 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
2637 (unsigned short)res->start,
2638 (unsigned short)res->start + DME1737_EXTENT - 1);
2639 return -EBUSY;
2640 }
2641
2642 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
2643 if (!data)
2644 return -ENOMEM;
2645
2646 data->addr = res->start;
2647 platform_set_drvdata(pdev, data);
2648
2649 /* Skip chip detection if module is loaded with force_id parameter */
2650 switch (force_id) {
2651 case SCH3112_ID:
2652 case SCH3114_ID:
2653 case SCH3116_ID:
2654 data->type = sch311x;
2655 break;
2656 case SCH5127_ID:
2657 data->type = sch5127;
2658 break;
2659 default:
2660 company = dme1737_read(data, DME1737_REG_COMPANY);
2661 device = dme1737_read(data, DME1737_REG_DEVICE);
2662
2663 if ((company == DME1737_COMPANY_SMSC) &&
2664 (device == SCH311X_DEVICE)) {
2665 data->type = sch311x;
2666 } else if ((company == DME1737_COMPANY_SMSC) &&
2667 (device == SCH5127_DEVICE)) {
2668 data->type = sch5127;
2669 } else {
2670 return -ENODEV;
2671 }
2672 }
2673
2674 if (data->type == sch5127)
2675 data->name = "sch5127";
2676 else
2677 data->name = "sch311x";
2678
2679 /* Initialize the mutex */
2680 mutex_init(&data->update_lock);
2681
2682 dev_info(dev, "Found a %s chip at 0x%04x\n",
2683 data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr);
2684
2685 /* Initialize the chip */
2686 err = dme1737_init_device(dev);
2687 if (err) {
2688 dev_err(dev, "Failed to initialize device.\n");
2689 return err;
2690 }
2691
2692 /* Create sysfs files */
2693 err = dme1737_create_files(dev);
2694 if (err) {
2695 dev_err(dev, "Failed to create sysfs files.\n");
2696 return err;
2697 }
2698
2699 /* Register device */
2700 data->hwmon_dev = hwmon_device_register(dev);
2701 if (IS_ERR(data->hwmon_dev)) {
2702 dev_err(dev, "Failed to register device.\n");
2703 err = PTR_ERR(data->hwmon_dev);
2704 goto exit_remove_files;
2705 }
2706
2707 return 0;
2708
2709exit_remove_files:
2710 dme1737_remove_files(dev);
2711 return err;
2712}
2713
2714static int dme1737_isa_remove(struct platform_device *pdev)
2715{
2716 struct dme1737_data *data = platform_get_drvdata(pdev);
2717
2718 hwmon_device_unregister(data->hwmon_dev);
2719 dme1737_remove_files(&pdev->dev);
2720
2721 return 0;
2722}
2723
2724static struct platform_driver dme1737_isa_driver = {
2725 .driver = {
2726 .name = "dme1737",
2727 },
2728 .probe = dme1737_isa_probe,
2729 .remove = dme1737_isa_remove,
2730};
2731
2732/* ---------------------------------------------------------------------
2733 * Module initialization and cleanup
2734 * --------------------------------------------------------------------- */
2735
2736static int __init dme1737_init(void)
2737{
2738 int err;
2739 unsigned short addr;
2740
2741 err = i2c_add_driver(&dme1737_i2c_driver);
2742 if (err)
2743 goto exit;
2744
2745 if (dme1737_isa_detect(0x2e, &addr) &&
2746 dme1737_isa_detect(0x4e, &addr) &&
2747 (!probe_all_addr ||
2748 (dme1737_isa_detect(0x162e, &addr) &&
2749 dme1737_isa_detect(0x164e, &addr)))) {
2750 /* Return 0 if we didn't find an ISA device */
2751 return 0;
2752 }
2753
2754 err = platform_driver_register(&dme1737_isa_driver);
2755 if (err)
2756 goto exit_del_i2c_driver;
2757
2758 /* Sets global pdev as a side effect */
2759 err = dme1737_isa_device_add(addr);
2760 if (err)
2761 goto exit_del_isa_driver;
2762
2763 return 0;
2764
2765exit_del_isa_driver:
2766 platform_driver_unregister(&dme1737_isa_driver);
2767exit_del_i2c_driver:
2768 i2c_del_driver(&dme1737_i2c_driver);
2769exit:
2770 return err;
2771}
2772
2773static void __exit dme1737_exit(void)
2774{
2775 if (pdev) {
2776 platform_device_unregister(pdev);
2777 platform_driver_unregister(&dme1737_isa_driver);
2778 }
2779
2780 i2c_del_driver(&dme1737_i2c_driver);
2781}
2782
2783MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
2784MODULE_DESCRIPTION("DME1737 sensors");
2785MODULE_LICENSE("GPL");
2786
2787module_init(dme1737_init);
2788module_exit(dme1737_exit);
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 */
45static struct platform_device *pdev;
46
47/* Module load parameters */
48static bool force_start;
49module_param(force_start, bool, 0);
50MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs");
51
52static unsigned short force_id;
53module_param(force_id, ushort, 0);
54MODULE_PARM_DESC(force_id, "Override the detected device ID");
55
56static bool probe_all_addr;
57module_param(probe_all_addr, bool, 0);
58MODULE_PARM_DESC(probe_all_addr,
59 "Include probing of non-standard LPC addresses");
60
61/* Addresses to scan */
62static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
63
64enum chips { dme1737, sch5027, sch311x, sch5127 };
65
66#define DO_REPORT "Please report to the driver maintainer."
67
68/* ---------------------------------------------------------------------
69 * Registers
70 *
71 * The sensors are defined as follows:
72 *
73 * Voltages Temperatures
74 * -------- ------------
75 * in0 +5VTR (+5V stdby) temp1 Remote diode 1
76 * in1 Vccp (proc core) temp2 Internal temp
77 * in2 VCC (internal +3.3V) temp3 Remote diode 2
78 * in3 +5V
79 * in4 +12V
80 * in5 VTR (+3.3V stby)
81 * in6 Vbat
82 * in7 Vtrip (sch5127 only)
83 *
84 * --------------------------------------------------------------------- */
85
86/* Voltages (in) numbered 0-7 (ix) */
87#define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) : \
88 (ix) < 7 ? 0x94 + (ix) : \
89 0x1f)
90#define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \
91 : 0x91 + (ix) * 2)
92#define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \
93 : 0x92 + (ix) * 2)
94
95/* Temperatures (temp) numbered 0-2 (ix) */
96#define DME1737_REG_TEMP(ix) (0x25 + (ix))
97#define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2)
98#define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2)
99#define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \
100 : 0x1c + (ix))
101
102/*
103 * Voltage and temperature LSBs
104 * The LSBs (4 bits each) are stored in 5 registers with the following layouts:
105 * IN_TEMP_LSB(0) = [in5, in6]
106 * IN_TEMP_LSB(1) = [temp3, temp1]
107 * IN_TEMP_LSB(2) = [in4, temp2]
108 * IN_TEMP_LSB(3) = [in3, in0]
109 * IN_TEMP_LSB(4) = [in2, in1]
110 * IN_TEMP_LSB(5) = [res, in7]
111 */
112#define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix))
113static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5};
114static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4};
115static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
116static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0};
117
118/* Fans numbered 0-5 (ix) */
119#define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \
120 : 0xa1 + (ix) * 2)
121#define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \
122 : 0xa5 + (ix) * 2)
123#define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \
124 : 0xb2 + (ix))
125#define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */
126
127/* PWMs numbered 0-2, 4-5 (ix) */
128#define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \
129 : 0xa1 + (ix))
130#define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */
131#define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */
132#define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \
133 : 0xa3 + (ix))
134/*
135 * The layout of the ramp rate registers is different from the other pwm
136 * registers. The bits for the 3 PWMs are stored in 2 registers:
137 * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0]
138 * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0]
139 */
140#define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */
141
142/* Thermal zones 0-2 */
143#define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix))
144#define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix))
145/*
146 * The layout of the hysteresis registers is different from the other zone
147 * registers. The bits for the 3 zones are stored in 2 registers:
148 * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
149 * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES]
150 */
151#define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix))
152
153/*
154 * Alarm registers and bit mapping
155 * The 3 8-bit alarm registers will be concatenated to a single 32-bit
156 * alarm value [0, ALARM3, ALARM2, ALARM1].
157 */
158#define DME1737_REG_ALARM1 0x41
159#define DME1737_REG_ALARM2 0x42
160#define DME1737_REG_ALARM3 0x83
161static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18};
162static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
163static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
164
165/* Miscellaneous registers */
166#define DME1737_REG_DEVICE 0x3d
167#define DME1737_REG_COMPANY 0x3e
168#define DME1737_REG_VERSTEP 0x3f
169#define DME1737_REG_CONFIG 0x40
170#define DME1737_REG_CONFIG2 0x7f
171#define DME1737_REG_VID 0x43
172#define DME1737_REG_TACH_PWM 0x81
173
174/* ---------------------------------------------------------------------
175 * Misc defines
176 * --------------------------------------------------------------------- */
177
178/* Chip identification */
179#define DME1737_COMPANY_SMSC 0x5c
180#define DME1737_VERSTEP 0x88
181#define DME1737_VERSTEP_MASK 0xf8
182#define SCH311X_DEVICE 0x8c
183#define SCH5027_VERSTEP 0x69
184#define SCH5127_DEVICE 0x8e
185
186/* Device ID values (global configuration register index 0x20) */
187#define DME1737_ID_1 0x77
188#define DME1737_ID_2 0x78
189#define SCH3112_ID 0x7c
190#define SCH3114_ID 0x7d
191#define SCH3116_ID 0x7f
192#define SCH5027_ID 0x89
193#define SCH5127_ID 0x86
194
195/* Length of ISA address segment */
196#define DME1737_EXTENT 2
197
198/* chip-dependent features */
199#define HAS_TEMP_OFFSET (1 << 0) /* bit 0 */
200#define HAS_VID (1 << 1) /* bit 1 */
201#define HAS_ZONE3 (1 << 2) /* bit 2 */
202#define HAS_ZONE_HYST (1 << 3) /* bit 3 */
203#define HAS_PWM_MIN (1 << 4) /* bit 4 */
204#define HAS_FAN(ix) (1 << ((ix) + 5)) /* bits 5-10 */
205#define HAS_PWM(ix) (1 << ((ix) + 11)) /* bits 11-16 */
206#define HAS_IN7 (1 << 17) /* bit 17 */
207
208/* ---------------------------------------------------------------------
209 * Data structures and manipulation thereof
210 * --------------------------------------------------------------------- */
211
212struct dme1737_data {
213 struct i2c_client *client; /* for I2C devices only */
214 struct device *hwmon_dev;
215 const char *name;
216 unsigned int addr; /* for ISA devices only */
217
218 struct mutex update_lock;
219 int valid; /* !=0 if following fields are valid */
220 unsigned long last_update; /* in jiffies */
221 unsigned long last_vbat; /* in jiffies */
222 enum chips type;
223 const int *in_nominal; /* pointer to IN_NOMINAL array */
224
225 u8 vid;
226 u8 pwm_rr_en;
227 u32 has_features;
228
229 /* Register values */
230 u16 in[8];
231 u8 in_min[8];
232 u8 in_max[8];
233 s16 temp[3];
234 s8 temp_min[3];
235 s8 temp_max[3];
236 s8 temp_offset[3];
237 u8 config;
238 u8 config2;
239 u8 vrm;
240 u16 fan[6];
241 u16 fan_min[6];
242 u8 fan_max[2];
243 u8 fan_opt[6];
244 u8 pwm[6];
245 u8 pwm_min[3];
246 u8 pwm_config[3];
247 u8 pwm_acz[3];
248 u8 pwm_freq[6];
249 u8 pwm_rr[2];
250 u8 zone_low[3];
251 u8 zone_abs[3];
252 u8 zone_hyst[2];
253 u32 alarms;
254};
255
256/* Nominal voltage values */
257static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
258 3300};
259static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
260 3300};
261static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
262 3300};
263static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300,
264 3300, 1500};
265#define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \
266 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \
267 (type) == sch5127 ? IN_NOMINAL_SCH5127 : \
268 IN_NOMINAL_DME1737)
269
270/*
271 * Voltage input
272 * Voltage inputs have 16 bits resolution, limit values have 8 bits
273 * resolution.
274 */
275static inline int IN_FROM_REG(int reg, int nominal, int res)
276{
277 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
278}
279
280static inline int IN_TO_REG(int val, int nominal)
281{
282 return clamp_val((val * 192 + nominal / 2) / nominal, 0, 255);
283}
284
285/*
286 * Temperature input
287 * The register values represent temperatures in 2's complement notation from
288 * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit
289 * values have 8 bits resolution.
290 */
291static inline int TEMP_FROM_REG(int reg, int res)
292{
293 return (reg * 1000) >> (res - 8);
294}
295
296static inline int TEMP_TO_REG(int val)
297{
298 return clamp_val((val < 0 ? val - 500 : val + 500) / 1000, -128, 127);
299}
300
301/* Temperature range */
302static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
303 10000, 13333, 16000, 20000, 26666, 32000,
304 40000, 53333, 80000};
305
306static inline int TEMP_RANGE_FROM_REG(int reg)
307{
308 return TEMP_RANGE[(reg >> 4) & 0x0f];
309}
310
311static int TEMP_RANGE_TO_REG(int val, int reg)
312{
313 int i;
314
315 for (i = 15; i > 0; i--) {
316 if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2)
317 break;
318 }
319
320 return (reg & 0x0f) | (i << 4);
321}
322
323/*
324 * Temperature hysteresis
325 * Register layout:
326 * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
327 * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx]
328 */
329static inline int TEMP_HYST_FROM_REG(int reg, int ix)
330{
331 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
332}
333
334static inline int TEMP_HYST_TO_REG(int val, int ix, int reg)
335{
336 int hyst = clamp_val((val + 500) / 1000, 0, 15);
337
338 return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4);
339}
340
341/* Fan input RPM */
342static inline int FAN_FROM_REG(int reg, int tpc)
343{
344 if (tpc)
345 return tpc * reg;
346 else
347 return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg;
348}
349
350static inline int FAN_TO_REG(int val, int tpc)
351{
352 if (tpc) {
353 return clamp_val(val / tpc, 0, 0xffff);
354 } else {
355 return (val <= 0) ? 0xffff :
356 clamp_val(90000 * 60 / val, 0, 0xfffe);
357 }
358}
359
360/*
361 * Fan TPC (tach pulse count)
362 * Converts a register value to a TPC multiplier or returns 0 if the tachometer
363 * is configured in legacy (non-tpc) mode
364 */
365static inline int FAN_TPC_FROM_REG(int reg)
366{
367 return (reg & 0x20) ? 0 : 60 >> (reg & 0x03);
368}
369
370/*
371 * Fan type
372 * The type of a fan is expressed in number of pulses-per-revolution that it
373 * emits
374 */
375static inline int FAN_TYPE_FROM_REG(int reg)
376{
377 int edge = (reg >> 1) & 0x03;
378
379 return (edge > 0) ? 1 << (edge - 1) : 0;
380}
381
382static inline int FAN_TYPE_TO_REG(int val, int reg)
383{
384 int edge = (val == 4) ? 3 : val;
385
386 return (reg & 0xf9) | (edge << 1);
387}
388
389/* Fan max RPM */
390static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
391 0x11, 0x0f, 0x0e};
392
393static int FAN_MAX_FROM_REG(int reg)
394{
395 int i;
396
397 for (i = 10; i > 0; i--) {
398 if (reg == FAN_MAX[i])
399 break;
400 }
401
402 return 1000 + i * 500;
403}
404
405static int FAN_MAX_TO_REG(int val)
406{
407 int i;
408
409 for (i = 10; i > 0; i--) {
410 if (val > (1000 + (i - 1) * 500))
411 break;
412 }
413
414 return FAN_MAX[i];
415}
416
417/*
418 * PWM enable
419 * Register to enable mapping:
420 * 000: 2 fan on zone 1 auto
421 * 001: 2 fan on zone 2 auto
422 * 010: 2 fan on zone 3 auto
423 * 011: 0 fan full on
424 * 100: -1 fan disabled
425 * 101: 2 fan on hottest of zones 2,3 auto
426 * 110: 2 fan on hottest of zones 1,2,3 auto
427 * 111: 1 fan in manual mode
428 */
429static inline int PWM_EN_FROM_REG(int reg)
430{
431 static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1};
432
433 return en[(reg >> 5) & 0x07];
434}
435
436static inline int PWM_EN_TO_REG(int val, int reg)
437{
438 int en = (val == 1) ? 7 : 3;
439
440 return (reg & 0x1f) | ((en & 0x07) << 5);
441}
442
443/*
444 * PWM auto channels zone
445 * Register to auto channels zone mapping (ACZ is a bitfield with bit x
446 * corresponding to zone x+1):
447 * 000: 001 fan on zone 1 auto
448 * 001: 010 fan on zone 2 auto
449 * 010: 100 fan on zone 3 auto
450 * 011: 000 fan full on
451 * 100: 000 fan disabled
452 * 101: 110 fan on hottest of zones 2,3 auto
453 * 110: 111 fan on hottest of zones 1,2,3 auto
454 * 111: 000 fan in manual mode
455 */
456static inline int PWM_ACZ_FROM_REG(int reg)
457{
458 static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0};
459
460 return acz[(reg >> 5) & 0x07];
461}
462
463static inline int PWM_ACZ_TO_REG(int val, int reg)
464{
465 int acz = (val == 4) ? 2 : val - 1;
466
467 return (reg & 0x1f) | ((acz & 0x07) << 5);
468}
469
470/* PWM frequency */
471static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
472 15000, 20000, 30000, 25000, 0, 0, 0, 0};
473
474static inline int PWM_FREQ_FROM_REG(int reg)
475{
476 return PWM_FREQ[reg & 0x0f];
477}
478
479static int PWM_FREQ_TO_REG(int val, int reg)
480{
481 int i;
482
483 /* the first two cases are special - stupid chip design! */
484 if (val > 27500) {
485 i = 10;
486 } else if (val > 22500) {
487 i = 11;
488 } else {
489 for (i = 9; i > 0; i--) {
490 if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2)
491 break;
492 }
493 }
494
495 return (reg & 0xf0) | i;
496}
497
498/*
499 * PWM ramp rate
500 * Register layout:
501 * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0]
502 * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0]
503 */
504static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
505
506static inline int PWM_RR_FROM_REG(int reg, int ix)
507{
508 int rr = (ix == 1) ? reg >> 4 : reg;
509
510 return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0;
511}
512
513static int PWM_RR_TO_REG(int val, int ix, int reg)
514{
515 int i;
516
517 for (i = 0; i < 7; i++) {
518 if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2)
519 break;
520 }
521
522 return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i;
523}
524
525/* PWM ramp rate enable */
526static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
527{
528 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
529}
530
531static inline int PWM_RR_EN_TO_REG(int val, int ix, int reg)
532{
533 int en = (ix == 1) ? 0x80 : 0x08;
534
535 return val ? reg | en : reg & ~en;
536}
537
538/*
539 * PWM min/off
540 * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for
541 * the register layout).
542 */
543static inline int PWM_OFF_FROM_REG(int reg, int ix)
544{
545 return (reg >> (ix + 5)) & 0x01;
546}
547
548static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
549{
550 return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5));
551}
552
553/* ---------------------------------------------------------------------
554 * Device I/O access
555 *
556 * ISA access is performed through an index/data register pair and needs to
557 * be protected by a mutex during runtime (not required for initialization).
558 * We use data->update_lock for this and need to ensure that we acquire it
559 * before calling dme1737_read or dme1737_write.
560 * --------------------------------------------------------------------- */
561
562static u8 dme1737_read(const struct dme1737_data *data, u8 reg)
563{
564 struct i2c_client *client = data->client;
565 s32 val;
566
567 if (client) { /* I2C device */
568 val = i2c_smbus_read_byte_data(client, reg);
569
570 if (val < 0) {
571 dev_warn(&client->dev,
572 "Read from register 0x%02x failed! %s\n",
573 reg, DO_REPORT);
574 }
575 } else { /* ISA device */
576 outb(reg, data->addr);
577 val = inb(data->addr + 1);
578 }
579
580 return val;
581}
582
583static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val)
584{
585 struct i2c_client *client = data->client;
586 s32 res = 0;
587
588 if (client) { /* I2C device */
589 res = i2c_smbus_write_byte_data(client, reg, val);
590
591 if (res < 0) {
592 dev_warn(&client->dev,
593 "Write to register 0x%02x failed! %s\n",
594 reg, DO_REPORT);
595 }
596 } else { /* ISA device */
597 outb(reg, data->addr);
598 outb(val, data->addr + 1);
599 }
600
601 return res;
602}
603
604static struct dme1737_data *dme1737_update_device(struct device *dev)
605{
606 struct dme1737_data *data = dev_get_drvdata(dev);
607 int ix;
608 u8 lsb[6];
609
610 mutex_lock(&data->update_lock);
611
612 /* Enable a Vbat monitoring cycle every 10 mins */
613 if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) {
614 dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data,
615 DME1737_REG_CONFIG) | 0x10);
616 data->last_vbat = jiffies;
617 }
618
619 /* Sample register contents every 1 sec */
620 if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
621 if (data->has_features & HAS_VID) {
622 data->vid = dme1737_read(data, DME1737_REG_VID) &
623 0x3f;
624 }
625
626 /* In (voltage) registers */
627 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
628 /*
629 * Voltage inputs are stored as 16 bit values even
630 * though they have only 12 bits resolution. This is
631 * to make it consistent with the temp inputs.
632 */
633 if (ix == 7 && !(data->has_features & HAS_IN7))
634 continue;
635 data->in[ix] = dme1737_read(data,
636 DME1737_REG_IN(ix)) << 8;
637 data->in_min[ix] = dme1737_read(data,
638 DME1737_REG_IN_MIN(ix));
639 data->in_max[ix] = dme1737_read(data,
640 DME1737_REG_IN_MAX(ix));
641 }
642
643 /* Temp registers */
644 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
645 /*
646 * Temp inputs are stored as 16 bit values even
647 * though they have only 12 bits resolution. This is
648 * to take advantage of implicit conversions between
649 * register values (2's complement) and temp values
650 * (signed decimal).
651 */
652 data->temp[ix] = dme1737_read(data,
653 DME1737_REG_TEMP(ix)) << 8;
654 data->temp_min[ix] = dme1737_read(data,
655 DME1737_REG_TEMP_MIN(ix));
656 data->temp_max[ix] = dme1737_read(data,
657 DME1737_REG_TEMP_MAX(ix));
658 if (data->has_features & HAS_TEMP_OFFSET) {
659 data->temp_offset[ix] = dme1737_read(data,
660 DME1737_REG_TEMP_OFFSET(ix));
661 }
662 }
663
664 /*
665 * In and temp LSB registers
666 * The LSBs are latched when the MSBs are read, so the order in
667 * which the registers are read (MSB first, then LSB) is
668 * important!
669 */
670 for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) {
671 if (ix == 5 && !(data->has_features & HAS_IN7))
672 continue;
673 lsb[ix] = dme1737_read(data,
674 DME1737_REG_IN_TEMP_LSB(ix));
675 }
676 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
677 if (ix == 7 && !(data->has_features & HAS_IN7))
678 continue;
679 data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] <<
680 DME1737_REG_IN_LSB_SHL[ix]) & 0xf0;
681 }
682 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
683 data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] <<
684 DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0;
685 }
686
687 /* Fan registers */
688 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
689 /*
690 * Skip reading registers if optional fans are not
691 * present
692 */
693 if (!(data->has_features & HAS_FAN(ix)))
694 continue;
695 data->fan[ix] = dme1737_read(data,
696 DME1737_REG_FAN(ix));
697 data->fan[ix] |= dme1737_read(data,
698 DME1737_REG_FAN(ix) + 1) << 8;
699 data->fan_min[ix] = dme1737_read(data,
700 DME1737_REG_FAN_MIN(ix));
701 data->fan_min[ix] |= dme1737_read(data,
702 DME1737_REG_FAN_MIN(ix) + 1) << 8;
703 data->fan_opt[ix] = dme1737_read(data,
704 DME1737_REG_FAN_OPT(ix));
705 /* fan_max exists only for fan[5-6] */
706 if (ix > 3) {
707 data->fan_max[ix - 4] = dme1737_read(data,
708 DME1737_REG_FAN_MAX(ix));
709 }
710 }
711
712 /* PWM registers */
713 for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
714 /*
715 * Skip reading registers if optional PWMs are not
716 * present
717 */
718 if (!(data->has_features & HAS_PWM(ix)))
719 continue;
720 data->pwm[ix] = dme1737_read(data,
721 DME1737_REG_PWM(ix));
722 data->pwm_freq[ix] = dme1737_read(data,
723 DME1737_REG_PWM_FREQ(ix));
724 /* pwm_config and pwm_min exist only for pwm[1-3] */
725 if (ix < 3) {
726 data->pwm_config[ix] = dme1737_read(data,
727 DME1737_REG_PWM_CONFIG(ix));
728 data->pwm_min[ix] = dme1737_read(data,
729 DME1737_REG_PWM_MIN(ix));
730 }
731 }
732 for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) {
733 data->pwm_rr[ix] = dme1737_read(data,
734 DME1737_REG_PWM_RR(ix));
735 }
736
737 /* Thermal zone registers */
738 for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
739 /* Skip reading registers if zone3 is not present */
740 if ((ix == 2) && !(data->has_features & HAS_ZONE3))
741 continue;
742 /* sch5127 zone2 registers are special */
743 if ((ix == 1) && (data->type == sch5127)) {
744 data->zone_low[1] = dme1737_read(data,
745 DME1737_REG_ZONE_LOW(2));
746 data->zone_abs[1] = dme1737_read(data,
747 DME1737_REG_ZONE_ABS(2));
748 } else {
749 data->zone_low[ix] = dme1737_read(data,
750 DME1737_REG_ZONE_LOW(ix));
751 data->zone_abs[ix] = dme1737_read(data,
752 DME1737_REG_ZONE_ABS(ix));
753 }
754 }
755 if (data->has_features & HAS_ZONE_HYST) {
756 for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
757 data->zone_hyst[ix] = dme1737_read(data,
758 DME1737_REG_ZONE_HYST(ix));
759 }
760 }
761
762 /* Alarm registers */
763 data->alarms = dme1737_read(data,
764 DME1737_REG_ALARM1);
765 /*
766 * Bit 7 tells us if the other alarm registers are non-zero and
767 * therefore also need to be read
768 */
769 if (data->alarms & 0x80) {
770 data->alarms |= dme1737_read(data,
771 DME1737_REG_ALARM2) << 8;
772 data->alarms |= dme1737_read(data,
773 DME1737_REG_ALARM3) << 16;
774 }
775
776 /*
777 * The ISA chips require explicit clearing of alarm bits.
778 * Don't worry, an alarm will come back if the condition
779 * that causes it still exists
780 */
781 if (!data->client) {
782 if (data->alarms & 0xff0000)
783 dme1737_write(data, DME1737_REG_ALARM3, 0xff);
784 if (data->alarms & 0xff00)
785 dme1737_write(data, DME1737_REG_ALARM2, 0xff);
786 if (data->alarms & 0xff)
787 dme1737_write(data, DME1737_REG_ALARM1, 0xff);
788 }
789
790 data->last_update = jiffies;
791 data->valid = 1;
792 }
793
794 mutex_unlock(&data->update_lock);
795
796 return data;
797}
798
799/* ---------------------------------------------------------------------
800 * Voltage sysfs attributes
801 * ix = [0-7]
802 * --------------------------------------------------------------------- */
803
804#define SYS_IN_INPUT 0
805#define SYS_IN_MIN 1
806#define SYS_IN_MAX 2
807#define SYS_IN_ALARM 3
808
809static ssize_t show_in(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_IN_INPUT:
821 res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16);
822 break;
823 case SYS_IN_MIN:
824 res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8);
825 break;
826 case SYS_IN_MAX:
827 res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8);
828 break;
829 case SYS_IN_ALARM:
830 res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01;
831 break;
832 default:
833 res = 0;
834 dev_dbg(dev, "Unknown function %d.\n", fn);
835 }
836
837 return sprintf(buf, "%d\n", res);
838}
839
840static ssize_t set_in(struct device *dev, struct device_attribute *attr,
841 const char *buf, size_t count)
842{
843 struct dme1737_data *data = dev_get_drvdata(dev);
844 struct sensor_device_attribute_2
845 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
846 int ix = sensor_attr_2->index;
847 int fn = sensor_attr_2->nr;
848 long val;
849 int err;
850
851 err = kstrtol(buf, 10, &val);
852 if (err)
853 return err;
854
855 mutex_lock(&data->update_lock);
856 switch (fn) {
857 case SYS_IN_MIN:
858 data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]);
859 dme1737_write(data, DME1737_REG_IN_MIN(ix),
860 data->in_min[ix]);
861 break;
862 case SYS_IN_MAX:
863 data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]);
864 dme1737_write(data, DME1737_REG_IN_MAX(ix),
865 data->in_max[ix]);
866 break;
867 default:
868 dev_dbg(dev, "Unknown function %d.\n", fn);
869 }
870 mutex_unlock(&data->update_lock);
871
872 return count;
873}
874
875/* ---------------------------------------------------------------------
876 * Temperature sysfs attributes
877 * ix = [0-2]
878 * --------------------------------------------------------------------- */
879
880#define SYS_TEMP_INPUT 0
881#define SYS_TEMP_MIN 1
882#define SYS_TEMP_MAX 2
883#define SYS_TEMP_OFFSET 3
884#define SYS_TEMP_ALARM 4
885#define SYS_TEMP_FAULT 5
886
887static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
888 char *buf)
889{
890 struct dme1737_data *data = dme1737_update_device(dev);
891 struct sensor_device_attribute_2
892 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
893 int ix = sensor_attr_2->index;
894 int fn = sensor_attr_2->nr;
895 int res;
896
897 switch (fn) {
898 case SYS_TEMP_INPUT:
899 res = TEMP_FROM_REG(data->temp[ix], 16);
900 break;
901 case SYS_TEMP_MIN:
902 res = TEMP_FROM_REG(data->temp_min[ix], 8);
903 break;
904 case SYS_TEMP_MAX:
905 res = TEMP_FROM_REG(data->temp_max[ix], 8);
906 break;
907 case SYS_TEMP_OFFSET:
908 res = TEMP_FROM_REG(data->temp_offset[ix], 8);
909 break;
910 case SYS_TEMP_ALARM:
911 res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01;
912 break;
913 case SYS_TEMP_FAULT:
914 res = (((u16)data->temp[ix] & 0xff00) == 0x8000);
915 break;
916 default:
917 res = 0;
918 dev_dbg(dev, "Unknown function %d.\n", fn);
919 }
920
921 return sprintf(buf, "%d\n", res);
922}
923
924static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
925 const char *buf, size_t count)
926{
927 struct dme1737_data *data = dev_get_drvdata(dev);
928 struct sensor_device_attribute_2
929 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
930 int ix = sensor_attr_2->index;
931 int fn = sensor_attr_2->nr;
932 long val;
933 int err;
934
935 err = kstrtol(buf, 10, &val);
936 if (err)
937 return err;
938
939 mutex_lock(&data->update_lock);
940 switch (fn) {
941 case SYS_TEMP_MIN:
942 data->temp_min[ix] = TEMP_TO_REG(val);
943 dme1737_write(data, DME1737_REG_TEMP_MIN(ix),
944 data->temp_min[ix]);
945 break;
946 case SYS_TEMP_MAX:
947 data->temp_max[ix] = TEMP_TO_REG(val);
948 dme1737_write(data, DME1737_REG_TEMP_MAX(ix),
949 data->temp_max[ix]);
950 break;
951 case SYS_TEMP_OFFSET:
952 data->temp_offset[ix] = TEMP_TO_REG(val);
953 dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix),
954 data->temp_offset[ix]);
955 break;
956 default:
957 dev_dbg(dev, "Unknown function %d.\n", fn);
958 }
959 mutex_unlock(&data->update_lock);
960
961 return count;
962}
963
964/* ---------------------------------------------------------------------
965 * Zone sysfs attributes
966 * ix = [0-2]
967 * --------------------------------------------------------------------- */
968
969#define SYS_ZONE_AUTO_CHANNELS_TEMP 0
970#define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1
971#define SYS_ZONE_AUTO_POINT1_TEMP 2
972#define SYS_ZONE_AUTO_POINT2_TEMP 3
973#define SYS_ZONE_AUTO_POINT3_TEMP 4
974
975static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
976 char *buf)
977{
978 struct dme1737_data *data = dme1737_update_device(dev);
979 struct sensor_device_attribute_2
980 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
981 int ix = sensor_attr_2->index;
982 int fn = sensor_attr_2->nr;
983 int res;
984
985 switch (fn) {
986 case SYS_ZONE_AUTO_CHANNELS_TEMP:
987 /* check config2 for non-standard temp-to-zone mapping */
988 if ((ix == 1) && (data->config2 & 0x02))
989 res = 4;
990 else
991 res = 1 << ix;
992 break;
993 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
994 res = TEMP_FROM_REG(data->zone_low[ix], 8) -
995 TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix);
996 break;
997 case SYS_ZONE_AUTO_POINT1_TEMP:
998 res = TEMP_FROM_REG(data->zone_low[ix], 8);
999 break;
1000 case SYS_ZONE_AUTO_POINT2_TEMP:
1001 /* pwm_freq holds the temp range bits in the upper nibble */
1002 res = TEMP_FROM_REG(data->zone_low[ix], 8) +
1003 TEMP_RANGE_FROM_REG(data->pwm_freq[ix]);
1004 break;
1005 case SYS_ZONE_AUTO_POINT3_TEMP:
1006 res = TEMP_FROM_REG(data->zone_abs[ix], 8);
1007 break;
1008 default:
1009 res = 0;
1010 dev_dbg(dev, "Unknown function %d.\n", fn);
1011 }
1012
1013 return sprintf(buf, "%d\n", res);
1014}
1015
1016static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
1017 const char *buf, size_t count)
1018{
1019 struct dme1737_data *data = dev_get_drvdata(dev);
1020 struct sensor_device_attribute_2
1021 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1022 int ix = sensor_attr_2->index;
1023 int fn = sensor_attr_2->nr;
1024 long val;
1025 int err;
1026
1027 err = kstrtol(buf, 10, &val);
1028 if (err)
1029 return err;
1030
1031 mutex_lock(&data->update_lock);
1032 switch (fn) {
1033 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
1034 /* Refresh the cache */
1035 data->zone_low[ix] = dme1737_read(data,
1036 DME1737_REG_ZONE_LOW(ix));
1037 /* Modify the temp hyst value */
1038 data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(
1039 TEMP_FROM_REG(data->zone_low[ix], 8) -
1040 val, ix, dme1737_read(data,
1041 DME1737_REG_ZONE_HYST(ix == 2)));
1042 dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2),
1043 data->zone_hyst[ix == 2]);
1044 break;
1045 case SYS_ZONE_AUTO_POINT1_TEMP:
1046 data->zone_low[ix] = TEMP_TO_REG(val);
1047 dme1737_write(data, DME1737_REG_ZONE_LOW(ix),
1048 data->zone_low[ix]);
1049 break;
1050 case SYS_ZONE_AUTO_POINT2_TEMP:
1051 /* Refresh the cache */
1052 data->zone_low[ix] = dme1737_read(data,
1053 DME1737_REG_ZONE_LOW(ix));
1054 /*
1055 * Modify the temp range value (which is stored in the upper
1056 * nibble of the pwm_freq register)
1057 */
1058 data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val -
1059 TEMP_FROM_REG(data->zone_low[ix], 8),
1060 dme1737_read(data,
1061 DME1737_REG_PWM_FREQ(ix)));
1062 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1063 data->pwm_freq[ix]);
1064 break;
1065 case SYS_ZONE_AUTO_POINT3_TEMP:
1066 data->zone_abs[ix] = TEMP_TO_REG(val);
1067 dme1737_write(data, DME1737_REG_ZONE_ABS(ix),
1068 data->zone_abs[ix]);
1069 break;
1070 default:
1071 dev_dbg(dev, "Unknown function %d.\n", fn);
1072 }
1073 mutex_unlock(&data->update_lock);
1074
1075 return count;
1076}
1077
1078/* ---------------------------------------------------------------------
1079 * Fan sysfs attributes
1080 * ix = [0-5]
1081 * --------------------------------------------------------------------- */
1082
1083#define SYS_FAN_INPUT 0
1084#define SYS_FAN_MIN 1
1085#define SYS_FAN_MAX 2
1086#define SYS_FAN_ALARM 3
1087#define SYS_FAN_TYPE 4
1088
1089static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1090 char *buf)
1091{
1092 struct dme1737_data *data = dme1737_update_device(dev);
1093 struct sensor_device_attribute_2
1094 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1095 int ix = sensor_attr_2->index;
1096 int fn = sensor_attr_2->nr;
1097 int res;
1098
1099 switch (fn) {
1100 case SYS_FAN_INPUT:
1101 res = FAN_FROM_REG(data->fan[ix],
1102 ix < 4 ? 0 :
1103 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1104 break;
1105 case SYS_FAN_MIN:
1106 res = FAN_FROM_REG(data->fan_min[ix],
1107 ix < 4 ? 0 :
1108 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1109 break;
1110 case SYS_FAN_MAX:
1111 /* only valid for fan[5-6] */
1112 res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]);
1113 break;
1114 case SYS_FAN_ALARM:
1115 res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01;
1116 break;
1117 case SYS_FAN_TYPE:
1118 /* only valid for fan[1-4] */
1119 res = FAN_TYPE_FROM_REG(data->fan_opt[ix]);
1120 break;
1121 default:
1122 res = 0;
1123 dev_dbg(dev, "Unknown function %d.\n", fn);
1124 }
1125
1126 return sprintf(buf, "%d\n", res);
1127}
1128
1129static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1130 const char *buf, size_t count)
1131{
1132 struct dme1737_data *data = dev_get_drvdata(dev);
1133 struct sensor_device_attribute_2
1134 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1135 int ix = sensor_attr_2->index;
1136 int fn = sensor_attr_2->nr;
1137 long val;
1138 int err;
1139
1140 err = kstrtol(buf, 10, &val);
1141 if (err)
1142 return err;
1143
1144 mutex_lock(&data->update_lock);
1145 switch (fn) {
1146 case SYS_FAN_MIN:
1147 if (ix < 4) {
1148 data->fan_min[ix] = FAN_TO_REG(val, 0);
1149 } else {
1150 /* Refresh the cache */
1151 data->fan_opt[ix] = dme1737_read(data,
1152 DME1737_REG_FAN_OPT(ix));
1153 /* Modify the fan min value */
1154 data->fan_min[ix] = FAN_TO_REG(val,
1155 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1156 }
1157 dme1737_write(data, DME1737_REG_FAN_MIN(ix),
1158 data->fan_min[ix] & 0xff);
1159 dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1,
1160 data->fan_min[ix] >> 8);
1161 break;
1162 case SYS_FAN_MAX:
1163 /* Only valid for fan[5-6] */
1164 data->fan_max[ix - 4] = FAN_MAX_TO_REG(val);
1165 dme1737_write(data, DME1737_REG_FAN_MAX(ix),
1166 data->fan_max[ix - 4]);
1167 break;
1168 case SYS_FAN_TYPE:
1169 /* Only valid for fan[1-4] */
1170 if (!(val == 1 || val == 2 || val == 4)) {
1171 count = -EINVAL;
1172 dev_warn(dev,
1173 "Fan type value %ld not supported. Choose one of 1, 2, or 4.\n",
1174 val);
1175 goto exit;
1176 }
1177 data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data,
1178 DME1737_REG_FAN_OPT(ix)));
1179 dme1737_write(data, DME1737_REG_FAN_OPT(ix),
1180 data->fan_opt[ix]);
1181 break;
1182 default:
1183 dev_dbg(dev, "Unknown function %d.\n", fn);
1184 }
1185exit:
1186 mutex_unlock(&data->update_lock);
1187
1188 return count;
1189}
1190
1191/* ---------------------------------------------------------------------
1192 * PWM sysfs attributes
1193 * ix = [0-4]
1194 * --------------------------------------------------------------------- */
1195
1196#define SYS_PWM 0
1197#define SYS_PWM_FREQ 1
1198#define SYS_PWM_ENABLE 2
1199#define SYS_PWM_RAMP_RATE 3
1200#define SYS_PWM_AUTO_CHANNELS_ZONE 4
1201#define SYS_PWM_AUTO_PWM_MIN 5
1202#define SYS_PWM_AUTO_POINT1_PWM 6
1203#define SYS_PWM_AUTO_POINT2_PWM 7
1204
1205static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1206 char *buf)
1207{
1208 struct dme1737_data *data = dme1737_update_device(dev);
1209 struct sensor_device_attribute_2
1210 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1211 int ix = sensor_attr_2->index;
1212 int fn = sensor_attr_2->nr;
1213 int res;
1214
1215 switch (fn) {
1216 case SYS_PWM:
1217 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0)
1218 res = 255;
1219 else
1220 res = data->pwm[ix];
1221 break;
1222 case SYS_PWM_FREQ:
1223 res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
1224 break;
1225 case SYS_PWM_ENABLE:
1226 if (ix >= 3)
1227 res = 1; /* pwm[5-6] hard-wired to manual mode */
1228 else
1229 res = PWM_EN_FROM_REG(data->pwm_config[ix]);
1230 break;
1231 case SYS_PWM_RAMP_RATE:
1232 /* Only valid for pwm[1-3] */
1233 res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix);
1234 break;
1235 case SYS_PWM_AUTO_CHANNELS_ZONE:
1236 /* Only valid for pwm[1-3] */
1237 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2)
1238 res = PWM_ACZ_FROM_REG(data->pwm_config[ix]);
1239 else
1240 res = data->pwm_acz[ix];
1241 break;
1242 case SYS_PWM_AUTO_PWM_MIN:
1243 /* Only valid for pwm[1-3] */
1244 if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix))
1245 res = data->pwm_min[ix];
1246 else
1247 res = 0;
1248 break;
1249 case SYS_PWM_AUTO_POINT1_PWM:
1250 /* Only valid for pwm[1-3] */
1251 res = data->pwm_min[ix];
1252 break;
1253 case SYS_PWM_AUTO_POINT2_PWM:
1254 /* Only valid for pwm[1-3] */
1255 res = 255; /* hard-wired */
1256 break;
1257 default:
1258 res = 0;
1259 dev_dbg(dev, "Unknown function %d.\n", fn);
1260 }
1261
1262 return sprintf(buf, "%d\n", res);
1263}
1264
1265static struct attribute *dme1737_pwm_chmod_attr[];
1266static void dme1737_chmod_file(struct device*, struct attribute*, umode_t);
1267
1268static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1269 const char *buf, size_t count)
1270{
1271 struct dme1737_data *data = dev_get_drvdata(dev);
1272 struct sensor_device_attribute_2
1273 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1274 int ix = sensor_attr_2->index;
1275 int fn = sensor_attr_2->nr;
1276 long val;
1277 int err;
1278
1279 err = kstrtol(buf, 10, &val);
1280 if (err)
1281 return err;
1282
1283 mutex_lock(&data->update_lock);
1284 switch (fn) {
1285 case SYS_PWM:
1286 data->pwm[ix] = clamp_val(val, 0, 255);
1287 dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]);
1288 break;
1289 case SYS_PWM_FREQ:
1290 data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data,
1291 DME1737_REG_PWM_FREQ(ix)));
1292 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1293 data->pwm_freq[ix]);
1294 break;
1295 case SYS_PWM_ENABLE:
1296 /* Only valid for pwm[1-3] */
1297 if (val < 0 || val > 2) {
1298 count = -EINVAL;
1299 dev_warn(dev,
1300 "PWM enable %ld not supported. Choose one of 0, 1, or 2.\n",
1301 val);
1302 goto exit;
1303 }
1304 /* Refresh the cache */
1305 data->pwm_config[ix] = dme1737_read(data,
1306 DME1737_REG_PWM_CONFIG(ix));
1307 if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) {
1308 /* Bail out if no change */
1309 goto exit;
1310 }
1311 /* Do some housekeeping if we are currently in auto mode */
1312 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1313 /* Save the current zone channel assignment */
1314 data->pwm_acz[ix] = PWM_ACZ_FROM_REG(
1315 data->pwm_config[ix]);
1316 /* Save the current ramp rate state and disable it */
1317 data->pwm_rr[ix > 0] = dme1737_read(data,
1318 DME1737_REG_PWM_RR(ix > 0));
1319 data->pwm_rr_en &= ~(1 << ix);
1320 if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) {
1321 data->pwm_rr_en |= (1 << ix);
1322 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix,
1323 data->pwm_rr[ix > 0]);
1324 dme1737_write(data,
1325 DME1737_REG_PWM_RR(ix > 0),
1326 data->pwm_rr[ix > 0]);
1327 }
1328 }
1329 /* Set the new PWM mode */
1330 switch (val) {
1331 case 0:
1332 /* Change permissions of pwm[ix] to read-only */
1333 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1334 S_IRUGO);
1335 /* Turn fan fully on */
1336 data->pwm_config[ix] = PWM_EN_TO_REG(0,
1337 data->pwm_config[ix]);
1338 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1339 data->pwm_config[ix]);
1340 break;
1341 case 1:
1342 /* Turn on manual mode */
1343 data->pwm_config[ix] = PWM_EN_TO_REG(1,
1344 data->pwm_config[ix]);
1345 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1346 data->pwm_config[ix]);
1347 /* Change permissions of pwm[ix] to read-writeable */
1348 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1349 S_IRUGO | S_IWUSR);
1350 break;
1351 case 2:
1352 /* Change permissions of pwm[ix] to read-only */
1353 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1354 S_IRUGO);
1355 /*
1356 * Turn on auto mode using the saved zone channel
1357 * assignment
1358 */
1359 data->pwm_config[ix] = PWM_ACZ_TO_REG(
1360 data->pwm_acz[ix],
1361 data->pwm_config[ix]);
1362 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1363 data->pwm_config[ix]);
1364 /* Enable PWM ramp rate if previously enabled */
1365 if (data->pwm_rr_en & (1 << ix)) {
1366 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix,
1367 dme1737_read(data,
1368 DME1737_REG_PWM_RR(ix > 0)));
1369 dme1737_write(data,
1370 DME1737_REG_PWM_RR(ix > 0),
1371 data->pwm_rr[ix > 0]);
1372 }
1373 break;
1374 }
1375 break;
1376 case SYS_PWM_RAMP_RATE:
1377 /* Only valid for pwm[1-3] */
1378 /* Refresh the cache */
1379 data->pwm_config[ix] = dme1737_read(data,
1380 DME1737_REG_PWM_CONFIG(ix));
1381 data->pwm_rr[ix > 0] = dme1737_read(data,
1382 DME1737_REG_PWM_RR(ix > 0));
1383 /* Set the ramp rate value */
1384 if (val > 0) {
1385 data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix,
1386 data->pwm_rr[ix > 0]);
1387 }
1388 /*
1389 * Enable/disable the feature only if the associated PWM
1390 * output is in automatic mode.
1391 */
1392 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1393 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix,
1394 data->pwm_rr[ix > 0]);
1395 }
1396 dme1737_write(data, DME1737_REG_PWM_RR(ix > 0),
1397 data->pwm_rr[ix > 0]);
1398 break;
1399 case SYS_PWM_AUTO_CHANNELS_ZONE:
1400 /* Only valid for pwm[1-3] */
1401 if (!(val == 1 || val == 2 || val == 4 ||
1402 val == 6 || val == 7)) {
1403 count = -EINVAL;
1404 dev_warn(dev,
1405 "PWM auto channels zone %ld not supported. Choose one of 1, 2, 4, 6, "
1406 "or 7.\n", val);
1407 goto exit;
1408 }
1409 /* Refresh the cache */
1410 data->pwm_config[ix] = dme1737_read(data,
1411 DME1737_REG_PWM_CONFIG(ix));
1412 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1413 /*
1414 * PWM is already in auto mode so update the temp
1415 * channel assignment
1416 */
1417 data->pwm_config[ix] = PWM_ACZ_TO_REG(val,
1418 data->pwm_config[ix]);
1419 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1420 data->pwm_config[ix]);
1421 } else {
1422 /*
1423 * PWM is not in auto mode so we save the temp
1424 * channel assignment for later use
1425 */
1426 data->pwm_acz[ix] = val;
1427 }
1428 break;
1429 case SYS_PWM_AUTO_PWM_MIN:
1430 /* Only valid for pwm[1-3] */
1431 /* Refresh the cache */
1432 data->pwm_min[ix] = dme1737_read(data,
1433 DME1737_REG_PWM_MIN(ix));
1434 /*
1435 * There are only 2 values supported for the auto_pwm_min
1436 * value: 0 or auto_point1_pwm. So if the temperature drops
1437 * below the auto_point1_temp_hyst value, the fan either turns
1438 * off or runs at auto_point1_pwm duty-cycle.
1439 */
1440 if (val > ((data->pwm_min[ix] + 1) / 2)) {
1441 data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
1442 dme1737_read(data,
1443 DME1737_REG_PWM_RR(0)));
1444 } else {
1445 data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
1446 dme1737_read(data,
1447 DME1737_REG_PWM_RR(0)));
1448 }
1449 dme1737_write(data, DME1737_REG_PWM_RR(0),
1450 data->pwm_rr[0]);
1451 break;
1452 case SYS_PWM_AUTO_POINT1_PWM:
1453 /* Only valid for pwm[1-3] */
1454 data->pwm_min[ix] = clamp_val(val, 0, 255);
1455 dme1737_write(data, DME1737_REG_PWM_MIN(ix),
1456 data->pwm_min[ix]);
1457 break;
1458 default:
1459 dev_dbg(dev, "Unknown function %d.\n", fn);
1460 }
1461exit:
1462 mutex_unlock(&data->update_lock);
1463
1464 return count;
1465}
1466
1467/* ---------------------------------------------------------------------
1468 * Miscellaneous sysfs attributes
1469 * --------------------------------------------------------------------- */
1470
1471static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
1472 char *buf)
1473{
1474 struct i2c_client *client = to_i2c_client(dev);
1475 struct dme1737_data *data = i2c_get_clientdata(client);
1476
1477 return sprintf(buf, "%d\n", data->vrm);
1478}
1479
1480static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
1481 const char *buf, size_t count)
1482{
1483 struct dme1737_data *data = dev_get_drvdata(dev);
1484 long val;
1485 int err;
1486
1487 err = kstrtol(buf, 10, &val);
1488 if (err)
1489 return err;
1490
1491 data->vrm = val;
1492 return count;
1493}
1494
1495static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
1496 char *buf)
1497{
1498 struct dme1737_data *data = dme1737_update_device(dev);
1499
1500 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1501}
1502
1503static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1504 char *buf)
1505{
1506 struct dme1737_data *data = dev_get_drvdata(dev);
1507
1508 return sprintf(buf, "%s\n", data->name);
1509}
1510
1511/* ---------------------------------------------------------------------
1512 * Sysfs device attribute defines and structs
1513 * --------------------------------------------------------------------- */
1514
1515/* Voltages 0-7 */
1516
1517#define SENSOR_DEVICE_ATTR_IN(ix) \
1518static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
1519 show_in, NULL, SYS_IN_INPUT, ix); \
1520static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
1521 show_in, set_in, SYS_IN_MIN, ix); \
1522static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
1523 show_in, set_in, SYS_IN_MAX, ix); \
1524static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
1525 show_in, NULL, SYS_IN_ALARM, ix)
1526
1527SENSOR_DEVICE_ATTR_IN(0);
1528SENSOR_DEVICE_ATTR_IN(1);
1529SENSOR_DEVICE_ATTR_IN(2);
1530SENSOR_DEVICE_ATTR_IN(3);
1531SENSOR_DEVICE_ATTR_IN(4);
1532SENSOR_DEVICE_ATTR_IN(5);
1533SENSOR_DEVICE_ATTR_IN(6);
1534SENSOR_DEVICE_ATTR_IN(7);
1535
1536/* Temperatures 1-3 */
1537
1538#define SENSOR_DEVICE_ATTR_TEMP(ix) \
1539static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
1540 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
1541static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
1542 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
1543static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
1544 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
1545static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
1546 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
1547static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
1548 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
1549static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
1550 show_temp, NULL, SYS_TEMP_FAULT, ix-1)
1551
1552SENSOR_DEVICE_ATTR_TEMP(1);
1553SENSOR_DEVICE_ATTR_TEMP(2);
1554SENSOR_DEVICE_ATTR_TEMP(3);
1555
1556/* Zones 1-3 */
1557
1558#define SENSOR_DEVICE_ATTR_ZONE(ix) \
1559static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
1560 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
1561static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
1562 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
1563static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
1564 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
1565static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
1566 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
1567static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
1568 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
1569
1570SENSOR_DEVICE_ATTR_ZONE(1);
1571SENSOR_DEVICE_ATTR_ZONE(2);
1572SENSOR_DEVICE_ATTR_ZONE(3);
1573
1574/* Fans 1-4 */
1575
1576#define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
1577static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1578 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1579static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1580 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1581static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1582 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1583static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
1584 show_fan, set_fan, SYS_FAN_TYPE, ix-1)
1585
1586SENSOR_DEVICE_ATTR_FAN_1TO4(1);
1587SENSOR_DEVICE_ATTR_FAN_1TO4(2);
1588SENSOR_DEVICE_ATTR_FAN_1TO4(3);
1589SENSOR_DEVICE_ATTR_FAN_1TO4(4);
1590
1591/* Fans 5-6 */
1592
1593#define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
1594static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1595 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1596static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1597 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1598static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1599 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1600static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
1601 show_fan, set_fan, SYS_FAN_MAX, ix-1)
1602
1603SENSOR_DEVICE_ATTR_FAN_5TO6(5);
1604SENSOR_DEVICE_ATTR_FAN_5TO6(6);
1605
1606/* PWMs 1-3 */
1607
1608#define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
1609static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1610 show_pwm, set_pwm, SYS_PWM, ix-1); \
1611static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1612 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1613static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1614 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
1615static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
1616 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
1617static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
1618 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
1619static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
1620 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
1621static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
1622 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
1623static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
1624 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
1625
1626SENSOR_DEVICE_ATTR_PWM_1TO3(1);
1627SENSOR_DEVICE_ATTR_PWM_1TO3(2);
1628SENSOR_DEVICE_ATTR_PWM_1TO3(3);
1629
1630/* PWMs 5-6 */
1631
1632#define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
1633static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1634 show_pwm, set_pwm, SYS_PWM, ix-1); \
1635static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1636 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1637static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1638 show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
1639
1640SENSOR_DEVICE_ATTR_PWM_5TO6(5);
1641SENSOR_DEVICE_ATTR_PWM_5TO6(6);
1642
1643/* Misc */
1644
1645static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
1646static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1647static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */
1648
1649/*
1650 * This struct holds all the attributes that are always present and need to be
1651 * created unconditionally. The attributes that need modification of their
1652 * permissions are created read-only and write permissions are added or removed
1653 * on the fly when required
1654 */
1655static struct attribute *dme1737_attr[] = {
1656 /* Voltages */
1657 &sensor_dev_attr_in0_input.dev_attr.attr,
1658 &sensor_dev_attr_in0_min.dev_attr.attr,
1659 &sensor_dev_attr_in0_max.dev_attr.attr,
1660 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1661 &sensor_dev_attr_in1_input.dev_attr.attr,
1662 &sensor_dev_attr_in1_min.dev_attr.attr,
1663 &sensor_dev_attr_in1_max.dev_attr.attr,
1664 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1665 &sensor_dev_attr_in2_input.dev_attr.attr,
1666 &sensor_dev_attr_in2_min.dev_attr.attr,
1667 &sensor_dev_attr_in2_max.dev_attr.attr,
1668 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1669 &sensor_dev_attr_in3_input.dev_attr.attr,
1670 &sensor_dev_attr_in3_min.dev_attr.attr,
1671 &sensor_dev_attr_in3_max.dev_attr.attr,
1672 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1673 &sensor_dev_attr_in4_input.dev_attr.attr,
1674 &sensor_dev_attr_in4_min.dev_attr.attr,
1675 &sensor_dev_attr_in4_max.dev_attr.attr,
1676 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1677 &sensor_dev_attr_in5_input.dev_attr.attr,
1678 &sensor_dev_attr_in5_min.dev_attr.attr,
1679 &sensor_dev_attr_in5_max.dev_attr.attr,
1680 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1681 &sensor_dev_attr_in6_input.dev_attr.attr,
1682 &sensor_dev_attr_in6_min.dev_attr.attr,
1683 &sensor_dev_attr_in6_max.dev_attr.attr,
1684 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1685 /* Temperatures */
1686 &sensor_dev_attr_temp1_input.dev_attr.attr,
1687 &sensor_dev_attr_temp1_min.dev_attr.attr,
1688 &sensor_dev_attr_temp1_max.dev_attr.attr,
1689 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1690 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1691 &sensor_dev_attr_temp2_input.dev_attr.attr,
1692 &sensor_dev_attr_temp2_min.dev_attr.attr,
1693 &sensor_dev_attr_temp2_max.dev_attr.attr,
1694 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1695 &sensor_dev_attr_temp2_fault.dev_attr.attr,
1696 &sensor_dev_attr_temp3_input.dev_attr.attr,
1697 &sensor_dev_attr_temp3_min.dev_attr.attr,
1698 &sensor_dev_attr_temp3_max.dev_attr.attr,
1699 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1700 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1701 /* Zones */
1702 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1703 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1704 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1705 &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr,
1706 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1707 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1708 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1709 &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
1710 NULL
1711};
1712
1713static const struct attribute_group dme1737_group = {
1714 .attrs = dme1737_attr,
1715};
1716
1717/*
1718 * The following struct holds temp offset attributes, which are not available
1719 * in all chips. The following chips support them:
1720 * DME1737, SCH311x
1721 */
1722static struct attribute *dme1737_temp_offset_attr[] = {
1723 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1724 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1725 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1726 NULL
1727};
1728
1729static const struct attribute_group dme1737_temp_offset_group = {
1730 .attrs = dme1737_temp_offset_attr,
1731};
1732
1733/*
1734 * The following struct holds VID related attributes, which are not available
1735 * in all chips. The following chips support them:
1736 * DME1737
1737 */
1738static struct attribute *dme1737_vid_attr[] = {
1739 &dev_attr_vrm.attr,
1740 &dev_attr_cpu0_vid.attr,
1741 NULL
1742};
1743
1744static const struct attribute_group dme1737_vid_group = {
1745 .attrs = dme1737_vid_attr,
1746};
1747
1748/*
1749 * The following struct holds temp zone 3 related attributes, which are not
1750 * available in all chips. The following chips support them:
1751 * DME1737, SCH311x, SCH5027
1752 */
1753static struct attribute *dme1737_zone3_attr[] = {
1754 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1755 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1756 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1757 &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
1758 NULL
1759};
1760
1761static const struct attribute_group dme1737_zone3_group = {
1762 .attrs = dme1737_zone3_attr,
1763};
1764
1765
1766/*
1767 * The following struct holds temp zone hysteresis related attributes, which
1768 * are not available in all chips. The following chips support them:
1769 * DME1737, SCH311x
1770 */
1771static struct attribute *dme1737_zone_hyst_attr[] = {
1772 &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
1773 &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
1774 &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
1775 NULL
1776};
1777
1778static const struct attribute_group dme1737_zone_hyst_group = {
1779 .attrs = dme1737_zone_hyst_attr,
1780};
1781
1782/*
1783 * The following struct holds voltage in7 related attributes, which
1784 * are not available in all chips. The following chips support them:
1785 * SCH5127
1786 */
1787static struct attribute *dme1737_in7_attr[] = {
1788 &sensor_dev_attr_in7_input.dev_attr.attr,
1789 &sensor_dev_attr_in7_min.dev_attr.attr,
1790 &sensor_dev_attr_in7_max.dev_attr.attr,
1791 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1792 NULL
1793};
1794
1795static const struct attribute_group dme1737_in7_group = {
1796 .attrs = dme1737_in7_attr,
1797};
1798
1799/*
1800 * The following structs hold the PWM attributes, some of which are optional.
1801 * Their creation depends on the chip configuration which is determined during
1802 * module load.
1803 */
1804static struct attribute *dme1737_pwm1_attr[] = {
1805 &sensor_dev_attr_pwm1.dev_attr.attr,
1806 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1807 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1808 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1809 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1810 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1811 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1812 NULL
1813};
1814static struct attribute *dme1737_pwm2_attr[] = {
1815 &sensor_dev_attr_pwm2.dev_attr.attr,
1816 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1817 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1818 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1819 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1820 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1821 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1822 NULL
1823};
1824static struct attribute *dme1737_pwm3_attr[] = {
1825 &sensor_dev_attr_pwm3.dev_attr.attr,
1826 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1827 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1828 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1829 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1830 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1831 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1832 NULL
1833};
1834static struct attribute *dme1737_pwm5_attr[] = {
1835 &sensor_dev_attr_pwm5.dev_attr.attr,
1836 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1837 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
1838 NULL
1839};
1840static struct attribute *dme1737_pwm6_attr[] = {
1841 &sensor_dev_attr_pwm6.dev_attr.attr,
1842 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1843 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
1844 NULL
1845};
1846
1847static const struct attribute_group dme1737_pwm_group[] = {
1848 { .attrs = dme1737_pwm1_attr },
1849 { .attrs = dme1737_pwm2_attr },
1850 { .attrs = dme1737_pwm3_attr },
1851 { .attrs = NULL },
1852 { .attrs = dme1737_pwm5_attr },
1853 { .attrs = dme1737_pwm6_attr },
1854};
1855
1856/*
1857 * The following struct holds auto PWM min attributes, which are not available
1858 * in all chips. Their creation depends on the chip type which is determined
1859 * during module load.
1860 */
1861static struct attribute *dme1737_auto_pwm_min_attr[] = {
1862 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1863 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1864 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1865};
1866
1867/*
1868 * The following structs hold the fan attributes, some of which are optional.
1869 * Their creation depends on the chip configuration which is determined during
1870 * module load.
1871 */
1872static struct attribute *dme1737_fan1_attr[] = {
1873 &sensor_dev_attr_fan1_input.dev_attr.attr,
1874 &sensor_dev_attr_fan1_min.dev_attr.attr,
1875 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1876 &sensor_dev_attr_fan1_type.dev_attr.attr,
1877 NULL
1878};
1879static struct attribute *dme1737_fan2_attr[] = {
1880 &sensor_dev_attr_fan2_input.dev_attr.attr,
1881 &sensor_dev_attr_fan2_min.dev_attr.attr,
1882 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1883 &sensor_dev_attr_fan2_type.dev_attr.attr,
1884 NULL
1885};
1886static struct attribute *dme1737_fan3_attr[] = {
1887 &sensor_dev_attr_fan3_input.dev_attr.attr,
1888 &sensor_dev_attr_fan3_min.dev_attr.attr,
1889 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1890 &sensor_dev_attr_fan3_type.dev_attr.attr,
1891 NULL
1892};
1893static struct attribute *dme1737_fan4_attr[] = {
1894 &sensor_dev_attr_fan4_input.dev_attr.attr,
1895 &sensor_dev_attr_fan4_min.dev_attr.attr,
1896 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1897 &sensor_dev_attr_fan4_type.dev_attr.attr,
1898 NULL
1899};
1900static struct attribute *dme1737_fan5_attr[] = {
1901 &sensor_dev_attr_fan5_input.dev_attr.attr,
1902 &sensor_dev_attr_fan5_min.dev_attr.attr,
1903 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1904 &sensor_dev_attr_fan5_max.dev_attr.attr,
1905 NULL
1906};
1907static struct attribute *dme1737_fan6_attr[] = {
1908 &sensor_dev_attr_fan6_input.dev_attr.attr,
1909 &sensor_dev_attr_fan6_min.dev_attr.attr,
1910 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1911 &sensor_dev_attr_fan6_max.dev_attr.attr,
1912 NULL
1913};
1914
1915static const struct attribute_group dme1737_fan_group[] = {
1916 { .attrs = dme1737_fan1_attr },
1917 { .attrs = dme1737_fan2_attr },
1918 { .attrs = dme1737_fan3_attr },
1919 { .attrs = dme1737_fan4_attr },
1920 { .attrs = dme1737_fan5_attr },
1921 { .attrs = dme1737_fan6_attr },
1922};
1923
1924/*
1925 * The permissions of the following zone attributes are changed to read-
1926 * writeable if the chip is *not* locked. Otherwise they stay read-only.
1927 */
1928static struct attribute *dme1737_zone_chmod_attr[] = {
1929 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1930 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1931 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1932 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1933 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1934 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1935 NULL
1936};
1937
1938static const struct attribute_group dme1737_zone_chmod_group = {
1939 .attrs = dme1737_zone_chmod_attr,
1940};
1941
1942
1943/*
1944 * The permissions of the following zone 3 attributes are changed to read-
1945 * writeable if the chip is *not* locked. Otherwise they stay read-only.
1946 */
1947static struct attribute *dme1737_zone3_chmod_attr[] = {
1948 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1949 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1950 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1951 NULL
1952};
1953
1954static const struct attribute_group dme1737_zone3_chmod_group = {
1955 .attrs = dme1737_zone3_chmod_attr,
1956};
1957
1958/*
1959 * The permissions of the following PWM attributes are changed to read-
1960 * writeable if the chip is *not* locked and the respective PWM is available.
1961 * Otherwise they stay read-only.
1962 */
1963static struct attribute *dme1737_pwm1_chmod_attr[] = {
1964 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1965 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1966 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1967 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1968 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1969 NULL
1970};
1971static struct attribute *dme1737_pwm2_chmod_attr[] = {
1972 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1973 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1974 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1975 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1976 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1977 NULL
1978};
1979static struct attribute *dme1737_pwm3_chmod_attr[] = {
1980 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1981 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1982 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1983 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1984 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1985 NULL
1986};
1987static struct attribute *dme1737_pwm5_chmod_attr[] = {
1988 &sensor_dev_attr_pwm5.dev_attr.attr,
1989 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1990 NULL
1991};
1992static struct attribute *dme1737_pwm6_chmod_attr[] = {
1993 &sensor_dev_attr_pwm6.dev_attr.attr,
1994 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1995 NULL
1996};
1997
1998static const struct attribute_group dme1737_pwm_chmod_group[] = {
1999 { .attrs = dme1737_pwm1_chmod_attr },
2000 { .attrs = dme1737_pwm2_chmod_attr },
2001 { .attrs = dme1737_pwm3_chmod_attr },
2002 { .attrs = NULL },
2003 { .attrs = dme1737_pwm5_chmod_attr },
2004 { .attrs = dme1737_pwm6_chmod_attr },
2005};
2006
2007/*
2008 * Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
2009 * chip is not locked. Otherwise they are read-only.
2010 */
2011static struct attribute *dme1737_pwm_chmod_attr[] = {
2012 &sensor_dev_attr_pwm1.dev_attr.attr,
2013 &sensor_dev_attr_pwm2.dev_attr.attr,
2014 &sensor_dev_attr_pwm3.dev_attr.attr,
2015};
2016
2017/* ---------------------------------------------------------------------
2018 * Super-IO functions
2019 * --------------------------------------------------------------------- */
2020
2021static inline void dme1737_sio_enter(int sio_cip)
2022{
2023 outb(0x55, sio_cip);
2024}
2025
2026static inline void dme1737_sio_exit(int sio_cip)
2027{
2028 outb(0xaa, sio_cip);
2029}
2030
2031static inline int dme1737_sio_inb(int sio_cip, int reg)
2032{
2033 outb(reg, sio_cip);
2034 return inb(sio_cip + 1);
2035}
2036
2037static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
2038{
2039 outb(reg, sio_cip);
2040 outb(val, sio_cip + 1);
2041}
2042
2043/* ---------------------------------------------------------------------
2044 * Device initialization
2045 * --------------------------------------------------------------------- */
2046
2047static int dme1737_i2c_get_features(int, struct dme1737_data*);
2048
2049static void dme1737_chmod_file(struct device *dev,
2050 struct attribute *attr, umode_t mode)
2051{
2052 if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
2053 dev_warn(dev, "Failed to change permissions of %s.\n",
2054 attr->name);
2055 }
2056}
2057
2058static void dme1737_chmod_group(struct device *dev,
2059 const struct attribute_group *group,
2060 umode_t mode)
2061{
2062 struct attribute **attr;
2063
2064 for (attr = group->attrs; *attr; attr++)
2065 dme1737_chmod_file(dev, *attr, mode);
2066}
2067
2068static void dme1737_remove_files(struct device *dev)
2069{
2070 struct dme1737_data *data = dev_get_drvdata(dev);
2071 int ix;
2072
2073 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
2074 if (data->has_features & HAS_FAN(ix)) {
2075 sysfs_remove_group(&dev->kobj,
2076 &dme1737_fan_group[ix]);
2077 }
2078 }
2079
2080 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
2081 if (data->has_features & HAS_PWM(ix)) {
2082 sysfs_remove_group(&dev->kobj,
2083 &dme1737_pwm_group[ix]);
2084 if ((data->has_features & HAS_PWM_MIN) && ix < 3) {
2085 sysfs_remove_file(&dev->kobj,
2086 dme1737_auto_pwm_min_attr[ix]);
2087 }
2088 }
2089 }
2090
2091 if (data->has_features & HAS_TEMP_OFFSET)
2092 sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group);
2093 if (data->has_features & HAS_VID)
2094 sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
2095 if (data->has_features & HAS_ZONE3)
2096 sysfs_remove_group(&dev->kobj, &dme1737_zone3_group);
2097 if (data->has_features & HAS_ZONE_HYST)
2098 sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group);
2099 if (data->has_features & HAS_IN7)
2100 sysfs_remove_group(&dev->kobj, &dme1737_in7_group);
2101 sysfs_remove_group(&dev->kobj, &dme1737_group);
2102
2103 if (!data->client)
2104 sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
2105}
2106
2107static int dme1737_create_files(struct device *dev)
2108{
2109 struct dme1737_data *data = dev_get_drvdata(dev);
2110 int err, ix;
2111
2112 /* Create a name attribute for ISA devices */
2113 if (!data->client) {
2114 err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr);
2115 if (err)
2116 goto exit;
2117 }
2118
2119 /* Create standard sysfs attributes */
2120 err = sysfs_create_group(&dev->kobj, &dme1737_group);
2121 if (err)
2122 goto exit_remove;
2123
2124 /* Create chip-dependent sysfs attributes */
2125 if (data->has_features & HAS_TEMP_OFFSET) {
2126 err = sysfs_create_group(&dev->kobj,
2127 &dme1737_temp_offset_group);
2128 if (err)
2129 goto exit_remove;
2130 }
2131 if (data->has_features & HAS_VID) {
2132 err = sysfs_create_group(&dev->kobj, &dme1737_vid_group);
2133 if (err)
2134 goto exit_remove;
2135 }
2136 if (data->has_features & HAS_ZONE3) {
2137 err = sysfs_create_group(&dev->kobj, &dme1737_zone3_group);
2138 if (err)
2139 goto exit_remove;
2140 }
2141 if (data->has_features & HAS_ZONE_HYST) {
2142 err = sysfs_create_group(&dev->kobj, &dme1737_zone_hyst_group);
2143 if (err)
2144 goto exit_remove;
2145 }
2146 if (data->has_features & HAS_IN7) {
2147 err = sysfs_create_group(&dev->kobj, &dme1737_in7_group);
2148 if (err)
2149 goto exit_remove;
2150 }
2151
2152 /* Create fan sysfs attributes */
2153 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
2154 if (data->has_features & HAS_FAN(ix)) {
2155 err = sysfs_create_group(&dev->kobj,
2156 &dme1737_fan_group[ix]);
2157 if (err)
2158 goto exit_remove;
2159 }
2160 }
2161
2162 /* Create PWM sysfs attributes */
2163 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
2164 if (data->has_features & HAS_PWM(ix)) {
2165 err = sysfs_create_group(&dev->kobj,
2166 &dme1737_pwm_group[ix]);
2167 if (err)
2168 goto exit_remove;
2169 if ((data->has_features & HAS_PWM_MIN) && (ix < 3)) {
2170 err = sysfs_create_file(&dev->kobj,
2171 dme1737_auto_pwm_min_attr[ix]);
2172 if (err)
2173 goto exit_remove;
2174 }
2175 }
2176 }
2177
2178 /*
2179 * Inform if the device is locked. Otherwise change the permissions of
2180 * selected attributes from read-only to read-writeable.
2181 */
2182 if (data->config & 0x02) {
2183 dev_info(dev,
2184 "Device is locked. Some attributes will be read-only.\n");
2185 } else {
2186 /* Change permissions of zone sysfs attributes */
2187 dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
2188 S_IRUGO | S_IWUSR);
2189
2190 /* Change permissions of chip-dependent sysfs attributes */
2191 if (data->has_features & HAS_TEMP_OFFSET) {
2192 dme1737_chmod_group(dev, &dme1737_temp_offset_group,
2193 S_IRUGO | S_IWUSR);
2194 }
2195 if (data->has_features & HAS_ZONE3) {
2196 dme1737_chmod_group(dev, &dme1737_zone3_chmod_group,
2197 S_IRUGO | S_IWUSR);
2198 }
2199 if (data->has_features & HAS_ZONE_HYST) {
2200 dme1737_chmod_group(dev, &dme1737_zone_hyst_group,
2201 S_IRUGO | S_IWUSR);
2202 }
2203
2204 /* Change permissions of PWM sysfs attributes */
2205 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
2206 if (data->has_features & HAS_PWM(ix)) {
2207 dme1737_chmod_group(dev,
2208 &dme1737_pwm_chmod_group[ix],
2209 S_IRUGO | S_IWUSR);
2210 if ((data->has_features & HAS_PWM_MIN) &&
2211 ix < 3) {
2212 dme1737_chmod_file(dev,
2213 dme1737_auto_pwm_min_attr[ix],
2214 S_IRUGO | S_IWUSR);
2215 }
2216 }
2217 }
2218
2219 /* Change permissions of pwm[1-3] if in manual mode */
2220 for (ix = 0; ix < 3; ix++) {
2221 if ((data->has_features & HAS_PWM(ix)) &&
2222 (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
2223 dme1737_chmod_file(dev,
2224 dme1737_pwm_chmod_attr[ix],
2225 S_IRUGO | S_IWUSR);
2226 }
2227 }
2228 }
2229
2230 return 0;
2231
2232exit_remove:
2233 dme1737_remove_files(dev);
2234exit:
2235 return err;
2236}
2237
2238static int dme1737_init_device(struct device *dev)
2239{
2240 struct dme1737_data *data = dev_get_drvdata(dev);
2241 struct i2c_client *client = data->client;
2242 int ix;
2243 u8 reg;
2244
2245 /* Point to the right nominal voltages array */
2246 data->in_nominal = IN_NOMINAL(data->type);
2247
2248 data->config = dme1737_read(data, DME1737_REG_CONFIG);
2249 /* Inform if part is not monitoring/started */
2250 if (!(data->config & 0x01)) {
2251 if (!force_start) {
2252 dev_err(dev,
2253 "Device is not monitoring. Use the force_start load parameter to override.\n");
2254 return -EFAULT;
2255 }
2256
2257 /* Force monitoring */
2258 data->config |= 0x01;
2259 dme1737_write(data, DME1737_REG_CONFIG, data->config);
2260 }
2261 /* Inform if part is not ready */
2262 if (!(data->config & 0x04)) {
2263 dev_err(dev, "Device is not ready.\n");
2264 return -EFAULT;
2265 }
2266
2267 /*
2268 * Determine which optional fan and pwm features are enabled (only
2269 * valid for I2C devices)
2270 */
2271 if (client) { /* I2C chip */
2272 data->config2 = dme1737_read(data, DME1737_REG_CONFIG2);
2273 /* Check if optional fan3 input is enabled */
2274 if (data->config2 & 0x04)
2275 data->has_features |= HAS_FAN(2);
2276
2277 /*
2278 * Fan4 and pwm3 are only available if the client's I2C address
2279 * is the default 0x2e. Otherwise the I/Os associated with
2280 * these functions are used for addr enable/select.
2281 */
2282 if (client->addr == 0x2e)
2283 data->has_features |= HAS_FAN(3) | HAS_PWM(2);
2284
2285 /*
2286 * Determine which of the optional fan[5-6] and pwm[5-6]
2287 * features are enabled. For this, we need to query the runtime
2288 * registers through the Super-IO LPC interface. Try both
2289 * config ports 0x2e and 0x4e.
2290 */
2291 if (dme1737_i2c_get_features(0x2e, data) &&
2292 dme1737_i2c_get_features(0x4e, data)) {
2293 dev_warn(dev,
2294 "Failed to query Super-IO for optional features.\n");
2295 }
2296 }
2297
2298 /* Fan[1-2] and pwm[1-2] are present in all chips */
2299 data->has_features |= HAS_FAN(0) | HAS_FAN(1) | HAS_PWM(0) | HAS_PWM(1);
2300
2301 /* Chip-dependent features */
2302 switch (data->type) {
2303 case dme1737:
2304 data->has_features |= HAS_TEMP_OFFSET | HAS_VID | HAS_ZONE3 |
2305 HAS_ZONE_HYST | HAS_PWM_MIN;
2306 break;
2307 case sch311x:
2308 data->has_features |= HAS_TEMP_OFFSET | HAS_ZONE3 |
2309 HAS_ZONE_HYST | HAS_PWM_MIN | HAS_FAN(2) | HAS_PWM(2);
2310 break;
2311 case sch5027:
2312 data->has_features |= HAS_ZONE3;
2313 break;
2314 case sch5127:
2315 data->has_features |= HAS_FAN(2) | HAS_PWM(2) | HAS_IN7;
2316 break;
2317 default:
2318 break;
2319 }
2320
2321 dev_info(dev,
2322 "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
2323 (data->has_features & HAS_PWM(2)) ? "yes" : "no",
2324 (data->has_features & HAS_PWM(4)) ? "yes" : "no",
2325 (data->has_features & HAS_PWM(5)) ? "yes" : "no",
2326 (data->has_features & HAS_FAN(2)) ? "yes" : "no",
2327 (data->has_features & HAS_FAN(3)) ? "yes" : "no",
2328 (data->has_features & HAS_FAN(4)) ? "yes" : "no",
2329 (data->has_features & HAS_FAN(5)) ? "yes" : "no");
2330
2331 reg = dme1737_read(data, DME1737_REG_TACH_PWM);
2332 /* Inform if fan-to-pwm mapping differs from the default */
2333 if (client && reg != 0xa4) { /* I2C chip */
2334 dev_warn(dev,
2335 "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, fan4->pwm%d. %s\n",
2336 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2337 ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1,
2338 DO_REPORT);
2339 } else if (!client && reg != 0x24) { /* ISA chip */
2340 dev_warn(dev,
2341 "Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. %s\n",
2342 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2343 ((reg >> 4) & 0x03) + 1, DO_REPORT);
2344 }
2345
2346 /*
2347 * Switch pwm[1-3] to manual mode if they are currently disabled and
2348 * set the duty-cycles to 0% (which is identical to the PWMs being
2349 * disabled).
2350 */
2351 if (!(data->config & 0x02)) {
2352 for (ix = 0; ix < 3; ix++) {
2353 data->pwm_config[ix] = dme1737_read(data,
2354 DME1737_REG_PWM_CONFIG(ix));
2355 if ((data->has_features & HAS_PWM(ix)) &&
2356 (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
2357 dev_info(dev,
2358 "Switching pwm%d to manual mode.\n",
2359 ix + 1);
2360 data->pwm_config[ix] = PWM_EN_TO_REG(1,
2361 data->pwm_config[ix]);
2362 dme1737_write(data, DME1737_REG_PWM(ix), 0);
2363 dme1737_write(data,
2364 DME1737_REG_PWM_CONFIG(ix),
2365 data->pwm_config[ix]);
2366 }
2367 }
2368 }
2369
2370 /* Initialize the default PWM auto channels zone (acz) assignments */
2371 data->pwm_acz[0] = 1; /* pwm1 -> zone1 */
2372 data->pwm_acz[1] = 2; /* pwm2 -> zone2 */
2373 data->pwm_acz[2] = 4; /* pwm3 -> zone3 */
2374
2375 /* Set VRM */
2376 if (data->has_features & HAS_VID)
2377 data->vrm = vid_which_vrm();
2378
2379 return 0;
2380}
2381
2382/* ---------------------------------------------------------------------
2383 * I2C device detection and registration
2384 * --------------------------------------------------------------------- */
2385
2386static struct i2c_driver dme1737_i2c_driver;
2387
2388static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
2389{
2390 int err = 0, reg;
2391 u16 addr;
2392
2393 dme1737_sio_enter(sio_cip);
2394
2395 /*
2396 * Check device ID
2397 * We currently know about two kinds of DME1737 and SCH5027.
2398 */
2399 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2400 if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 ||
2401 reg == SCH5027_ID)) {
2402 err = -ENODEV;
2403 goto exit;
2404 }
2405
2406 /* Select logical device A (runtime registers) */
2407 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2408
2409 /* Get the base address of the runtime registers */
2410 addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2411 dme1737_sio_inb(sio_cip, 0x61);
2412 if (!addr) {
2413 err = -ENODEV;
2414 goto exit;
2415 }
2416
2417 /*
2418 * Read the runtime registers to determine which optional features
2419 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
2420 * to '10' if the respective feature is enabled.
2421 */
2422 if ((inb(addr + 0x43) & 0x0c) == 0x08) /* fan6 */
2423 data->has_features |= HAS_FAN(5);
2424 if ((inb(addr + 0x44) & 0x0c) == 0x08) /* pwm6 */
2425 data->has_features |= HAS_PWM(5);
2426 if ((inb(addr + 0x45) & 0x0c) == 0x08) /* fan5 */
2427 data->has_features |= HAS_FAN(4);
2428 if ((inb(addr + 0x46) & 0x0c) == 0x08) /* pwm5 */
2429 data->has_features |= HAS_PWM(4);
2430
2431exit:
2432 dme1737_sio_exit(sio_cip);
2433
2434 return err;
2435}
2436
2437/* Return 0 if detection is successful, -ENODEV otherwise */
2438static int dme1737_i2c_detect(struct i2c_client *client,
2439 struct i2c_board_info *info)
2440{
2441 struct i2c_adapter *adapter = client->adapter;
2442 struct device *dev = &adapter->dev;
2443 u8 company, verstep = 0;
2444 const char *name;
2445
2446 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
2447 return -ENODEV;
2448
2449 company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY);
2450 verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP);
2451
2452 if (company == DME1737_COMPANY_SMSC &&
2453 verstep == SCH5027_VERSTEP) {
2454 name = "sch5027";
2455 } else if (company == DME1737_COMPANY_SMSC &&
2456 (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
2457 name = "dme1737";
2458 } else {
2459 return -ENODEV;
2460 }
2461
2462 dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n",
2463 verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737",
2464 client->addr, verstep);
2465 strlcpy(info->type, name, I2C_NAME_SIZE);
2466
2467 return 0;
2468}
2469
2470static int dme1737_i2c_probe(struct i2c_client *client,
2471 const struct i2c_device_id *id)
2472{
2473 struct dme1737_data *data;
2474 struct device *dev = &client->dev;
2475 int err;
2476
2477 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
2478 if (!data)
2479 return -ENOMEM;
2480
2481 i2c_set_clientdata(client, data);
2482 data->type = id->driver_data;
2483 data->client = client;
2484 data->name = client->name;
2485 mutex_init(&data->update_lock);
2486
2487 /* Initialize the DME1737 chip */
2488 err = dme1737_init_device(dev);
2489 if (err) {
2490 dev_err(dev, "Failed to initialize device.\n");
2491 return err;
2492 }
2493
2494 /* Create sysfs files */
2495 err = dme1737_create_files(dev);
2496 if (err) {
2497 dev_err(dev, "Failed to create sysfs files.\n");
2498 return err;
2499 }
2500
2501 /* Register device */
2502 data->hwmon_dev = hwmon_device_register(dev);
2503 if (IS_ERR(data->hwmon_dev)) {
2504 dev_err(dev, "Failed to register device.\n");
2505 err = PTR_ERR(data->hwmon_dev);
2506 goto exit_remove;
2507 }
2508
2509 return 0;
2510
2511exit_remove:
2512 dme1737_remove_files(dev);
2513 return err;
2514}
2515
2516static int dme1737_i2c_remove(struct i2c_client *client)
2517{
2518 struct dme1737_data *data = i2c_get_clientdata(client);
2519
2520 hwmon_device_unregister(data->hwmon_dev);
2521 dme1737_remove_files(&client->dev);
2522
2523 return 0;
2524}
2525
2526static const struct i2c_device_id dme1737_id[] = {
2527 { "dme1737", dme1737 },
2528 { "sch5027", sch5027 },
2529 { }
2530};
2531MODULE_DEVICE_TABLE(i2c, dme1737_id);
2532
2533static struct i2c_driver dme1737_i2c_driver = {
2534 .class = I2C_CLASS_HWMON,
2535 .driver = {
2536 .name = "dme1737",
2537 },
2538 .probe = dme1737_i2c_probe,
2539 .remove = dme1737_i2c_remove,
2540 .id_table = dme1737_id,
2541 .detect = dme1737_i2c_detect,
2542 .address_list = normal_i2c,
2543};
2544
2545/* ---------------------------------------------------------------------
2546 * ISA device detection and registration
2547 * --------------------------------------------------------------------- */
2548
2549static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
2550{
2551 int err = 0, reg;
2552 unsigned short base_addr;
2553
2554 dme1737_sio_enter(sio_cip);
2555
2556 /*
2557 * Check device ID
2558 * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127
2559 */
2560 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2561 if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID ||
2562 reg == SCH5127_ID)) {
2563 err = -ENODEV;
2564 goto exit;
2565 }
2566
2567 /* Select logical device A (runtime registers) */
2568 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2569
2570 /* Get the base address of the runtime registers */
2571 base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2572 dme1737_sio_inb(sio_cip, 0x61);
2573 if (!base_addr) {
2574 pr_err("Base address not set\n");
2575 err = -ENODEV;
2576 goto exit;
2577 }
2578
2579 /*
2580 * Access to the hwmon registers is through an index/data register
2581 * pair located at offset 0x70/0x71.
2582 */
2583 *addr = base_addr + 0x70;
2584
2585exit:
2586 dme1737_sio_exit(sio_cip);
2587 return err;
2588}
2589
2590static int __init dme1737_isa_device_add(unsigned short addr)
2591{
2592 struct resource res = {
2593 .start = addr,
2594 .end = addr + DME1737_EXTENT - 1,
2595 .name = "dme1737",
2596 .flags = IORESOURCE_IO,
2597 };
2598 int err;
2599
2600 err = acpi_check_resource_conflict(&res);
2601 if (err)
2602 goto exit;
2603
2604 pdev = platform_device_alloc("dme1737", addr);
2605 if (!pdev) {
2606 pr_err("Failed to allocate device\n");
2607 err = -ENOMEM;
2608 goto exit;
2609 }
2610
2611 err = platform_device_add_resources(pdev, &res, 1);
2612 if (err) {
2613 pr_err("Failed to add device resource (err = %d)\n", err);
2614 goto exit_device_put;
2615 }
2616
2617 err = platform_device_add(pdev);
2618 if (err) {
2619 pr_err("Failed to add device (err = %d)\n", err);
2620 goto exit_device_put;
2621 }
2622
2623 return 0;
2624
2625exit_device_put:
2626 platform_device_put(pdev);
2627 pdev = NULL;
2628exit:
2629 return err;
2630}
2631
2632static int dme1737_isa_probe(struct platform_device *pdev)
2633{
2634 u8 company, device;
2635 struct resource *res;
2636 struct dme1737_data *data;
2637 struct device *dev = &pdev->dev;
2638 int err;
2639
2640 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2641 if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) {
2642 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
2643 (unsigned short)res->start,
2644 (unsigned short)res->start + DME1737_EXTENT - 1);
2645 return -EBUSY;
2646 }
2647
2648 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
2649 if (!data)
2650 return -ENOMEM;
2651
2652 data->addr = res->start;
2653 platform_set_drvdata(pdev, data);
2654
2655 /* Skip chip detection if module is loaded with force_id parameter */
2656 switch (force_id) {
2657 case SCH3112_ID:
2658 case SCH3114_ID:
2659 case SCH3116_ID:
2660 data->type = sch311x;
2661 break;
2662 case SCH5127_ID:
2663 data->type = sch5127;
2664 break;
2665 default:
2666 company = dme1737_read(data, DME1737_REG_COMPANY);
2667 device = dme1737_read(data, DME1737_REG_DEVICE);
2668
2669 if ((company == DME1737_COMPANY_SMSC) &&
2670 (device == SCH311X_DEVICE)) {
2671 data->type = sch311x;
2672 } else if ((company == DME1737_COMPANY_SMSC) &&
2673 (device == SCH5127_DEVICE)) {
2674 data->type = sch5127;
2675 } else {
2676 return -ENODEV;
2677 }
2678 }
2679
2680 if (data->type == sch5127)
2681 data->name = "sch5127";
2682 else
2683 data->name = "sch311x";
2684
2685 /* Initialize the mutex */
2686 mutex_init(&data->update_lock);
2687
2688 dev_info(dev, "Found a %s chip at 0x%04x\n",
2689 data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr);
2690
2691 /* Initialize the chip */
2692 err = dme1737_init_device(dev);
2693 if (err) {
2694 dev_err(dev, "Failed to initialize device.\n");
2695 return err;
2696 }
2697
2698 /* Create sysfs files */
2699 err = dme1737_create_files(dev);
2700 if (err) {
2701 dev_err(dev, "Failed to create sysfs files.\n");
2702 return err;
2703 }
2704
2705 /* Register device */
2706 data->hwmon_dev = hwmon_device_register(dev);
2707 if (IS_ERR(data->hwmon_dev)) {
2708 dev_err(dev, "Failed to register device.\n");
2709 err = PTR_ERR(data->hwmon_dev);
2710 goto exit_remove_files;
2711 }
2712
2713 return 0;
2714
2715exit_remove_files:
2716 dme1737_remove_files(dev);
2717 return err;
2718}
2719
2720static int dme1737_isa_remove(struct platform_device *pdev)
2721{
2722 struct dme1737_data *data = platform_get_drvdata(pdev);
2723
2724 hwmon_device_unregister(data->hwmon_dev);
2725 dme1737_remove_files(&pdev->dev);
2726
2727 return 0;
2728}
2729
2730static struct platform_driver dme1737_isa_driver = {
2731 .driver = {
2732 .owner = THIS_MODULE,
2733 .name = "dme1737",
2734 },
2735 .probe = dme1737_isa_probe,
2736 .remove = dme1737_isa_remove,
2737};
2738
2739/* ---------------------------------------------------------------------
2740 * Module initialization and cleanup
2741 * --------------------------------------------------------------------- */
2742
2743static int __init dme1737_init(void)
2744{
2745 int err;
2746 unsigned short addr;
2747
2748 err = i2c_add_driver(&dme1737_i2c_driver);
2749 if (err)
2750 goto exit;
2751
2752 if (dme1737_isa_detect(0x2e, &addr) &&
2753 dme1737_isa_detect(0x4e, &addr) &&
2754 (!probe_all_addr ||
2755 (dme1737_isa_detect(0x162e, &addr) &&
2756 dme1737_isa_detect(0x164e, &addr)))) {
2757 /* Return 0 if we didn't find an ISA device */
2758 return 0;
2759 }
2760
2761 err = platform_driver_register(&dme1737_isa_driver);
2762 if (err)
2763 goto exit_del_i2c_driver;
2764
2765 /* Sets global pdev as a side effect */
2766 err = dme1737_isa_device_add(addr);
2767 if (err)
2768 goto exit_del_isa_driver;
2769
2770 return 0;
2771
2772exit_del_isa_driver:
2773 platform_driver_unregister(&dme1737_isa_driver);
2774exit_del_i2c_driver:
2775 i2c_del_driver(&dme1737_i2c_driver);
2776exit:
2777 return err;
2778}
2779
2780static void __exit dme1737_exit(void)
2781{
2782 if (pdev) {
2783 platform_device_unregister(pdev);
2784 platform_driver_unregister(&dme1737_isa_driver);
2785 }
2786
2787 i2c_del_driver(&dme1737_i2c_driver);
2788}
2789
2790MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
2791MODULE_DESCRIPTION("DME1737 sensors");
2792MODULE_LICENSE("GPL");
2793
2794module_init(dme1737_init);
2795module_exit(dme1737_exit);