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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, "Include probing of non-standard LPC "
59 "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/* ---------------------------------------------------------------------
67 * Registers
68 *
69 * The sensors are defined as follows:
70 *
71 * Voltages Temperatures
72 * -------- ------------
73 * in0 +5VTR (+5V stdby) temp1 Remote diode 1
74 * in1 Vccp (proc core) temp2 Internal temp
75 * in2 VCC (internal +3.3V) temp3 Remote diode 2
76 * in3 +5V
77 * in4 +12V
78 * in5 VTR (+3.3V stby)
79 * in6 Vbat
80 * in7 Vtrip (sch5127 only)
81 *
82 * --------------------------------------------------------------------- */
83
84/* Voltages (in) numbered 0-7 (ix) */
85#define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) : \
86 (ix) < 7 ? 0x94 + (ix) : \
87 0x1f)
88#define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \
89 : 0x91 + (ix) * 2)
90#define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \
91 : 0x92 + (ix) * 2)
92
93/* Temperatures (temp) numbered 0-2 (ix) */
94#define DME1737_REG_TEMP(ix) (0x25 + (ix))
95#define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2)
96#define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2)
97#define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \
98 : 0x1c + (ix))
99
100/*
101 * Voltage and temperature LSBs
102 * The LSBs (4 bits each) are stored in 5 registers with the following layouts:
103 * IN_TEMP_LSB(0) = [in5, in6]
104 * IN_TEMP_LSB(1) = [temp3, temp1]
105 * IN_TEMP_LSB(2) = [in4, temp2]
106 * IN_TEMP_LSB(3) = [in3, in0]
107 * IN_TEMP_LSB(4) = [in2, in1]
108 * IN_TEMP_LSB(5) = [res, in7]
109 */
110#define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix))
111static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5};
112static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4};
113static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
114static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0};
115
116/* Fans numbered 0-5 (ix) */
117#define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \
118 : 0xa1 + (ix) * 2)
119#define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \
120 : 0xa5 + (ix) * 2)
121#define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \
122 : 0xb2 + (ix))
123#define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */
124
125/* PWMs numbered 0-2, 4-5 (ix) */
126#define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \
127 : 0xa1 + (ix))
128#define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */
129#define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */
130#define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \
131 : 0xa3 + (ix))
132/*
133 * The layout of the ramp rate registers is different from the other pwm
134 * registers. The bits for the 3 PWMs are stored in 2 registers:
135 * PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0]
136 * PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0]
137 */
138#define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */
139
140/* Thermal zones 0-2 */
141#define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix))
142#define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix))
143/*
144 * The layout of the hysteresis registers is different from the other zone
145 * registers. The bits for the 3 zones are stored in 2 registers:
146 * ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
147 * ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES]
148 */
149#define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix))
150
151/*
152 * Alarm registers and bit mapping
153 * The 3 8-bit alarm registers will be concatenated to a single 32-bit
154 * alarm value [0, ALARM3, ALARM2, ALARM1].
155 */
156#define DME1737_REG_ALARM1 0x41
157#define DME1737_REG_ALARM2 0x42
158#define DME1737_REG_ALARM3 0x83
159static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18};
160static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
161static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
162
163/* Miscellaneous registers */
164#define DME1737_REG_DEVICE 0x3d
165#define DME1737_REG_COMPANY 0x3e
166#define DME1737_REG_VERSTEP 0x3f
167#define DME1737_REG_CONFIG 0x40
168#define DME1737_REG_CONFIG2 0x7f
169#define DME1737_REG_VID 0x43
170#define DME1737_REG_TACH_PWM 0x81
171
172/* ---------------------------------------------------------------------
173 * Misc defines
174 * --------------------------------------------------------------------- */
175
176/* Chip identification */
177#define DME1737_COMPANY_SMSC 0x5c
178#define DME1737_VERSTEP 0x88
179#define DME1737_VERSTEP_MASK 0xf8
180#define SCH311X_DEVICE 0x8c
181#define SCH5027_VERSTEP 0x69
182#define SCH5127_DEVICE 0x8e
183
184/* Device ID values (global configuration register index 0x20) */
185#define DME1737_ID_1 0x77
186#define DME1737_ID_2 0x78
187#define SCH3112_ID 0x7c
188#define SCH3114_ID 0x7d
189#define SCH3116_ID 0x7f
190#define SCH5027_ID 0x89
191#define SCH5127_ID 0x86
192
193/* Length of ISA address segment */
194#define DME1737_EXTENT 2
195
196/* chip-dependent features */
197#define HAS_TEMP_OFFSET (1 << 0) /* bit 0 */
198#define HAS_VID (1 << 1) /* bit 1 */
199#define HAS_ZONE3 (1 << 2) /* bit 2 */
200#define HAS_ZONE_HYST (1 << 3) /* bit 3 */
201#define HAS_PWM_MIN (1 << 4) /* bit 4 */
202#define HAS_FAN(ix) (1 << ((ix) + 5)) /* bits 5-10 */
203#define HAS_PWM(ix) (1 << ((ix) + 11)) /* bits 11-16 */
204#define HAS_IN7 (1 << 17) /* bit 17 */
205
206/* ---------------------------------------------------------------------
207 * Data structures and manipulation thereof
208 * --------------------------------------------------------------------- */
209
210struct dme1737_data {
211 struct i2c_client *client; /* for I2C devices only */
212 struct device *hwmon_dev;
213 const char *name;
214 unsigned int addr; /* for ISA devices only */
215
216 struct mutex update_lock;
217 int valid; /* !=0 if following fields are valid */
218 unsigned long last_update; /* in jiffies */
219 unsigned long last_vbat; /* in jiffies */
220 enum chips type;
221 const int *in_nominal; /* pointer to IN_NOMINAL array */
222
223 u8 vid;
224 u8 pwm_rr_en;
225 u32 has_features;
226
227 /* Register values */
228 u16 in[8];
229 u8 in_min[8];
230 u8 in_max[8];
231 s16 temp[3];
232 s8 temp_min[3];
233 s8 temp_max[3];
234 s8 temp_offset[3];
235 u8 config;
236 u8 config2;
237 u8 vrm;
238 u16 fan[6];
239 u16 fan_min[6];
240 u8 fan_max[2];
241 u8 fan_opt[6];
242 u8 pwm[6];
243 u8 pwm_min[3];
244 u8 pwm_config[3];
245 u8 pwm_acz[3];
246 u8 pwm_freq[6];
247 u8 pwm_rr[2];
248 u8 zone_low[3];
249 u8 zone_abs[3];
250 u8 zone_hyst[2];
251 u32 alarms;
252};
253
254/* Nominal voltage values */
255static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
256 3300};
257static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
258 3300};
259static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
260 3300};
261static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300,
262 3300, 1500};
263#define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \
264 (type) == sch5027 ? IN_NOMINAL_SCH5027 : \
265 (type) == sch5127 ? IN_NOMINAL_SCH5127 : \
266 IN_NOMINAL_DME1737)
267
268/*
269 * Voltage input
270 * Voltage inputs have 16 bits resolution, limit values have 8 bits
271 * resolution.
272 */
273static inline int IN_FROM_REG(int reg, int nominal, int res)
274{
275 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
276}
277
278static inline int IN_TO_REG(int val, int nominal)
279{
280 return SENSORS_LIMIT((val * 192 + nominal / 2) / nominal, 0, 255);
281}
282
283/*
284 * Temperature input
285 * The register values represent temperatures in 2's complement notation from
286 * -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit
287 * values have 8 bits resolution.
288 */
289static inline int TEMP_FROM_REG(int reg, int res)
290{
291 return (reg * 1000) >> (res - 8);
292}
293
294static inline int TEMP_TO_REG(int val)
295{
296 return SENSORS_LIMIT((val < 0 ? val - 500 : val + 500) / 1000,
297 -128, 127);
298}
299
300/* Temperature range */
301static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
302 10000, 13333, 16000, 20000, 26666, 32000,
303 40000, 53333, 80000};
304
305static inline int TEMP_RANGE_FROM_REG(int reg)
306{
307 return TEMP_RANGE[(reg >> 4) & 0x0f];
308}
309
310static int TEMP_RANGE_TO_REG(int val, int reg)
311{
312 int i;
313
314 for (i = 15; i > 0; i--) {
315 if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2)
316 break;
317 }
318
319 return (reg & 0x0f) | (i << 4);
320}
321
322/*
323 * Temperature hysteresis
324 * Register layout:
325 * reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
326 * reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx]
327 */
328static inline int TEMP_HYST_FROM_REG(int reg, int ix)
329{
330 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
331}
332
333static inline int TEMP_HYST_TO_REG(int val, int ix, int reg)
334{
335 int hyst = SENSORS_LIMIT((val + 500) / 1000, 0, 15);
336
337 return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4);
338}
339
340/* Fan input RPM */
341static inline int FAN_FROM_REG(int reg, int tpc)
342{
343 if (tpc)
344 return tpc * reg;
345 else
346 return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg;
347}
348
349static inline int FAN_TO_REG(int val, int tpc)
350{
351 if (tpc) {
352 return SENSORS_LIMIT(val / tpc, 0, 0xffff);
353 } else {
354 return (val <= 0) ? 0xffff :
355 SENSORS_LIMIT(90000 * 60 / val, 0, 0xfffe);
356 }
357}
358
359/*
360 * Fan TPC (tach pulse count)
361 * Converts a register value to a TPC multiplier or returns 0 if the tachometer
362 * is configured in legacy (non-tpc) mode
363 */
364static inline int FAN_TPC_FROM_REG(int reg)
365{
366 return (reg & 0x20) ? 0 : 60 >> (reg & 0x03);
367}
368
369/*
370 * Fan type
371 * The type of a fan is expressed in number of pulses-per-revolution that it
372 * emits
373 */
374static inline int FAN_TYPE_FROM_REG(int reg)
375{
376 int edge = (reg >> 1) & 0x03;
377
378 return (edge > 0) ? 1 << (edge - 1) : 0;
379}
380
381static inline int FAN_TYPE_TO_REG(int val, int reg)
382{
383 int edge = (val == 4) ? 3 : val;
384
385 return (reg & 0xf9) | (edge << 1);
386}
387
388/* Fan max RPM */
389static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
390 0x11, 0x0f, 0x0e};
391
392static int FAN_MAX_FROM_REG(int reg)
393{
394 int i;
395
396 for (i = 10; i > 0; i--) {
397 if (reg == FAN_MAX[i])
398 break;
399 }
400
401 return 1000 + i * 500;
402}
403
404static int FAN_MAX_TO_REG(int val)
405{
406 int i;
407
408 for (i = 10; i > 0; i--) {
409 if (val > (1000 + (i - 1) * 500))
410 break;
411 }
412
413 return FAN_MAX[i];
414}
415
416/*
417 * PWM enable
418 * Register to enable mapping:
419 * 000: 2 fan on zone 1 auto
420 * 001: 2 fan on zone 2 auto
421 * 010: 2 fan on zone 3 auto
422 * 011: 0 fan full on
423 * 100: -1 fan disabled
424 * 101: 2 fan on hottest of zones 2,3 auto
425 * 110: 2 fan on hottest of zones 1,2,3 auto
426 * 111: 1 fan in manual mode
427 */
428static inline int PWM_EN_FROM_REG(int reg)
429{
430 static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1};
431
432 return en[(reg >> 5) & 0x07];
433}
434
435static inline int PWM_EN_TO_REG(int val, int reg)
436{
437 int en = (val == 1) ? 7 : 3;
438
439 return (reg & 0x1f) | ((en & 0x07) << 5);
440}
441
442/*
443 * PWM auto channels zone
444 * Register to auto channels zone mapping (ACZ is a bitfield with bit x
445 * corresponding to zone x+1):
446 * 000: 001 fan on zone 1 auto
447 * 001: 010 fan on zone 2 auto
448 * 010: 100 fan on zone 3 auto
449 * 011: 000 fan full on
450 * 100: 000 fan disabled
451 * 101: 110 fan on hottest of zones 2,3 auto
452 * 110: 111 fan on hottest of zones 1,2,3 auto
453 * 111: 000 fan in manual mode
454 */
455static inline int PWM_ACZ_FROM_REG(int reg)
456{
457 static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0};
458
459 return acz[(reg >> 5) & 0x07];
460}
461
462static inline int PWM_ACZ_TO_REG(int val, int reg)
463{
464 int acz = (val == 4) ? 2 : val - 1;
465
466 return (reg & 0x1f) | ((acz & 0x07) << 5);
467}
468
469/* PWM frequency */
470static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
471 15000, 20000, 30000, 25000, 0, 0, 0, 0};
472
473static inline int PWM_FREQ_FROM_REG(int reg)
474{
475 return PWM_FREQ[reg & 0x0f];
476}
477
478static int PWM_FREQ_TO_REG(int val, int reg)
479{
480 int i;
481
482 /* the first two cases are special - stupid chip design! */
483 if (val > 27500) {
484 i = 10;
485 } else if (val > 22500) {
486 i = 11;
487 } else {
488 for (i = 9; i > 0; i--) {
489 if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2)
490 break;
491 }
492 }
493
494 return (reg & 0xf0) | i;
495}
496
497/*
498 * PWM ramp rate
499 * Register layout:
500 * reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0]
501 * reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0]
502 */
503static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
504
505static inline int PWM_RR_FROM_REG(int reg, int ix)
506{
507 int rr = (ix == 1) ? reg >> 4 : reg;
508
509 return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0;
510}
511
512static int PWM_RR_TO_REG(int val, int ix, int reg)
513{
514 int i;
515
516 for (i = 0; i < 7; i++) {
517 if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2)
518 break;
519 }
520
521 return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i;
522}
523
524/* PWM ramp rate enable */
525static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
526{
527 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
528}
529
530static inline int PWM_RR_EN_TO_REG(int val, int ix, int reg)
531{
532 int en = (ix == 1) ? 0x80 : 0x08;
533
534 return val ? reg | en : reg & ~en;
535}
536
537/*
538 * PWM min/off
539 * The PWM min/off bits are part of the PMW ramp rate register 0 (see above for
540 * the register layout).
541 */
542static inline int PWM_OFF_FROM_REG(int reg, int ix)
543{
544 return (reg >> (ix + 5)) & 0x01;
545}
546
547static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
548{
549 return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5));
550}
551
552/* ---------------------------------------------------------------------
553 * Device I/O access
554 *
555 * ISA access is performed through an index/data register pair and needs to
556 * be protected by a mutex during runtime (not required for initialization).
557 * We use data->update_lock for this and need to ensure that we acquire it
558 * before calling dme1737_read or dme1737_write.
559 * --------------------------------------------------------------------- */
560
561static u8 dme1737_read(const struct dme1737_data *data, u8 reg)
562{
563 struct i2c_client *client = data->client;
564 s32 val;
565
566 if (client) { /* I2C device */
567 val = i2c_smbus_read_byte_data(client, reg);
568
569 if (val < 0) {
570 dev_warn(&client->dev, "Read from register "
571 "0x%02x failed! Please report to the driver "
572 "maintainer.\n", reg);
573 }
574 } else { /* ISA device */
575 outb(reg, data->addr);
576 val = inb(data->addr + 1);
577 }
578
579 return val;
580}
581
582static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val)
583{
584 struct i2c_client *client = data->client;
585 s32 res = 0;
586
587 if (client) { /* I2C device */
588 res = i2c_smbus_write_byte_data(client, reg, val);
589
590 if (res < 0) {
591 dev_warn(&client->dev, "Write to register "
592 "0x%02x failed! Please report to the driver "
593 "maintainer.\n", reg);
594 }
595 } else { /* ISA device */
596 outb(reg, data->addr);
597 outb(val, data->addr + 1);
598 }
599
600 return res;
601}
602
603static struct dme1737_data *dme1737_update_device(struct device *dev)
604{
605 struct dme1737_data *data = dev_get_drvdata(dev);
606 int ix;
607 u8 lsb[6];
608
609 mutex_lock(&data->update_lock);
610
611 /* Enable a Vbat monitoring cycle every 10 mins */
612 if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) {
613 dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data,
614 DME1737_REG_CONFIG) | 0x10);
615 data->last_vbat = jiffies;
616 }
617
618 /* Sample register contents every 1 sec */
619 if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
620 if (data->has_features & HAS_VID) {
621 data->vid = dme1737_read(data, DME1737_REG_VID) &
622 0x3f;
623 }
624
625 /* In (voltage) registers */
626 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
627 /*
628 * Voltage inputs are stored as 16 bit values even
629 * though they have only 12 bits resolution. This is
630 * to make it consistent with the temp inputs.
631 */
632 if (ix == 7 && !(data->has_features & HAS_IN7))
633 continue;
634 data->in[ix] = dme1737_read(data,
635 DME1737_REG_IN(ix)) << 8;
636 data->in_min[ix] = dme1737_read(data,
637 DME1737_REG_IN_MIN(ix));
638 data->in_max[ix] = dme1737_read(data,
639 DME1737_REG_IN_MAX(ix));
640 }
641
642 /* Temp registers */
643 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
644 /*
645 * Temp inputs are stored as 16 bit values even
646 * though they have only 12 bits resolution. This is
647 * to take advantage of implicit conversions between
648 * register values (2's complement) and temp values
649 * (signed decimal).
650 */
651 data->temp[ix] = dme1737_read(data,
652 DME1737_REG_TEMP(ix)) << 8;
653 data->temp_min[ix] = dme1737_read(data,
654 DME1737_REG_TEMP_MIN(ix));
655 data->temp_max[ix] = dme1737_read(data,
656 DME1737_REG_TEMP_MAX(ix));
657 if (data->has_features & HAS_TEMP_OFFSET) {
658 data->temp_offset[ix] = dme1737_read(data,
659 DME1737_REG_TEMP_OFFSET(ix));
660 }
661 }
662
663 /*
664 * In and temp LSB registers
665 * The LSBs are latched when the MSBs are read, so the order in
666 * which the registers are read (MSB first, then LSB) is
667 * important!
668 */
669 for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) {
670 if (ix == 5 && !(data->has_features & HAS_IN7))
671 continue;
672 lsb[ix] = dme1737_read(data,
673 DME1737_REG_IN_TEMP_LSB(ix));
674 }
675 for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
676 if (ix == 7 && !(data->has_features & HAS_IN7))
677 continue;
678 data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] <<
679 DME1737_REG_IN_LSB_SHL[ix]) & 0xf0;
680 }
681 for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
682 data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] <<
683 DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0;
684 }
685
686 /* Fan registers */
687 for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
688 /*
689 * Skip reading registers if optional fans are not
690 * present
691 */
692 if (!(data->has_features & HAS_FAN(ix)))
693 continue;
694 data->fan[ix] = dme1737_read(data,
695 DME1737_REG_FAN(ix));
696 data->fan[ix] |= dme1737_read(data,
697 DME1737_REG_FAN(ix) + 1) << 8;
698 data->fan_min[ix] = dme1737_read(data,
699 DME1737_REG_FAN_MIN(ix));
700 data->fan_min[ix] |= dme1737_read(data,
701 DME1737_REG_FAN_MIN(ix) + 1) << 8;
702 data->fan_opt[ix] = dme1737_read(data,
703 DME1737_REG_FAN_OPT(ix));
704 /* fan_max exists only for fan[5-6] */
705 if (ix > 3) {
706 data->fan_max[ix - 4] = dme1737_read(data,
707 DME1737_REG_FAN_MAX(ix));
708 }
709 }
710
711 /* PWM registers */
712 for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
713 /*
714 * Skip reading registers if optional PWMs are not
715 * present
716 */
717 if (!(data->has_features & HAS_PWM(ix)))
718 continue;
719 data->pwm[ix] = dme1737_read(data,
720 DME1737_REG_PWM(ix));
721 data->pwm_freq[ix] = dme1737_read(data,
722 DME1737_REG_PWM_FREQ(ix));
723 /* pwm_config and pwm_min exist only for pwm[1-3] */
724 if (ix < 3) {
725 data->pwm_config[ix] = dme1737_read(data,
726 DME1737_REG_PWM_CONFIG(ix));
727 data->pwm_min[ix] = dme1737_read(data,
728 DME1737_REG_PWM_MIN(ix));
729 }
730 }
731 for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) {
732 data->pwm_rr[ix] = dme1737_read(data,
733 DME1737_REG_PWM_RR(ix));
734 }
735
736 /* Thermal zone registers */
737 for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
738 /* Skip reading registers if zone3 is not present */
739 if ((ix == 2) && !(data->has_features & HAS_ZONE3))
740 continue;
741 /* sch5127 zone2 registers are special */
742 if ((ix == 1) && (data->type == sch5127)) {
743 data->zone_low[1] = dme1737_read(data,
744 DME1737_REG_ZONE_LOW(2));
745 data->zone_abs[1] = dme1737_read(data,
746 DME1737_REG_ZONE_ABS(2));
747 } else {
748 data->zone_low[ix] = dme1737_read(data,
749 DME1737_REG_ZONE_LOW(ix));
750 data->zone_abs[ix] = dme1737_read(data,
751 DME1737_REG_ZONE_ABS(ix));
752 }
753 }
754 if (data->has_features & HAS_ZONE_HYST) {
755 for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
756 data->zone_hyst[ix] = dme1737_read(data,
757 DME1737_REG_ZONE_HYST(ix));
758 }
759 }
760
761 /* Alarm registers */
762 data->alarms = dme1737_read(data,
763 DME1737_REG_ALARM1);
764 /*
765 * Bit 7 tells us if the other alarm registers are non-zero and
766 * therefore also need to be read
767 */
768 if (data->alarms & 0x80) {
769 data->alarms |= dme1737_read(data,
770 DME1737_REG_ALARM2) << 8;
771 data->alarms |= dme1737_read(data,
772 DME1737_REG_ALARM3) << 16;
773 }
774
775 /*
776 * The ISA chips require explicit clearing of alarm bits.
777 * Don't worry, an alarm will come back if the condition
778 * that causes it still exists
779 */
780 if (!data->client) {
781 if (data->alarms & 0xff0000)
782 dme1737_write(data, DME1737_REG_ALARM3, 0xff);
783 if (data->alarms & 0xff00)
784 dme1737_write(data, DME1737_REG_ALARM2, 0xff);
785 if (data->alarms & 0xff)
786 dme1737_write(data, DME1737_REG_ALARM1, 0xff);
787 }
788
789 data->last_update = jiffies;
790 data->valid = 1;
791 }
792
793 mutex_unlock(&data->update_lock);
794
795 return data;
796}
797
798/* ---------------------------------------------------------------------
799 * Voltage sysfs attributes
800 * ix = [0-7]
801 * --------------------------------------------------------------------- */
802
803#define SYS_IN_INPUT 0
804#define SYS_IN_MIN 1
805#define SYS_IN_MAX 2
806#define SYS_IN_ALARM 3
807
808static ssize_t show_in(struct device *dev, struct device_attribute *attr,
809 char *buf)
810{
811 struct dme1737_data *data = dme1737_update_device(dev);
812 struct sensor_device_attribute_2
813 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
814 int ix = sensor_attr_2->index;
815 int fn = sensor_attr_2->nr;
816 int res;
817
818 switch (fn) {
819 case SYS_IN_INPUT:
820 res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16);
821 break;
822 case SYS_IN_MIN:
823 res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8);
824 break;
825 case SYS_IN_MAX:
826 res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8);
827 break;
828 case SYS_IN_ALARM:
829 res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01;
830 break;
831 default:
832 res = 0;
833 dev_dbg(dev, "Unknown function %d.\n", fn);
834 }
835
836 return sprintf(buf, "%d\n", res);
837}
838
839static ssize_t set_in(struct device *dev, struct device_attribute *attr,
840 const char *buf, size_t count)
841{
842 struct dme1737_data *data = dev_get_drvdata(dev);
843 struct sensor_device_attribute_2
844 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
845 int ix = sensor_attr_2->index;
846 int fn = sensor_attr_2->nr;
847 long val;
848 int err;
849
850 err = kstrtol(buf, 10, &val);
851 if (err)
852 return err;
853
854 mutex_lock(&data->update_lock);
855 switch (fn) {
856 case SYS_IN_MIN:
857 data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]);
858 dme1737_write(data, DME1737_REG_IN_MIN(ix),
859 data->in_min[ix]);
860 break;
861 case SYS_IN_MAX:
862 data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]);
863 dme1737_write(data, DME1737_REG_IN_MAX(ix),
864 data->in_max[ix]);
865 break;
866 default:
867 dev_dbg(dev, "Unknown function %d.\n", fn);
868 }
869 mutex_unlock(&data->update_lock);
870
871 return count;
872}
873
874/* ---------------------------------------------------------------------
875 * Temperature sysfs attributes
876 * ix = [0-2]
877 * --------------------------------------------------------------------- */
878
879#define SYS_TEMP_INPUT 0
880#define SYS_TEMP_MIN 1
881#define SYS_TEMP_MAX 2
882#define SYS_TEMP_OFFSET 3
883#define SYS_TEMP_ALARM 4
884#define SYS_TEMP_FAULT 5
885
886static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
887 char *buf)
888{
889 struct dme1737_data *data = dme1737_update_device(dev);
890 struct sensor_device_attribute_2
891 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
892 int ix = sensor_attr_2->index;
893 int fn = sensor_attr_2->nr;
894 int res;
895
896 switch (fn) {
897 case SYS_TEMP_INPUT:
898 res = TEMP_FROM_REG(data->temp[ix], 16);
899 break;
900 case SYS_TEMP_MIN:
901 res = TEMP_FROM_REG(data->temp_min[ix], 8);
902 break;
903 case SYS_TEMP_MAX:
904 res = TEMP_FROM_REG(data->temp_max[ix], 8);
905 break;
906 case SYS_TEMP_OFFSET:
907 res = TEMP_FROM_REG(data->temp_offset[ix], 8);
908 break;
909 case SYS_TEMP_ALARM:
910 res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01;
911 break;
912 case SYS_TEMP_FAULT:
913 res = (((u16)data->temp[ix] & 0xff00) == 0x8000);
914 break;
915 default:
916 res = 0;
917 dev_dbg(dev, "Unknown function %d.\n", fn);
918 }
919
920 return sprintf(buf, "%d\n", res);
921}
922
923static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
924 const char *buf, size_t count)
925{
926 struct dme1737_data *data = dev_get_drvdata(dev);
927 struct sensor_device_attribute_2
928 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
929 int ix = sensor_attr_2->index;
930 int fn = sensor_attr_2->nr;
931 long val;
932 int err;
933
934 err = kstrtol(buf, 10, &val);
935 if (err)
936 return err;
937
938 mutex_lock(&data->update_lock);
939 switch (fn) {
940 case SYS_TEMP_MIN:
941 data->temp_min[ix] = TEMP_TO_REG(val);
942 dme1737_write(data, DME1737_REG_TEMP_MIN(ix),
943 data->temp_min[ix]);
944 break;
945 case SYS_TEMP_MAX:
946 data->temp_max[ix] = TEMP_TO_REG(val);
947 dme1737_write(data, DME1737_REG_TEMP_MAX(ix),
948 data->temp_max[ix]);
949 break;
950 case SYS_TEMP_OFFSET:
951 data->temp_offset[ix] = TEMP_TO_REG(val);
952 dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix),
953 data->temp_offset[ix]);
954 break;
955 default:
956 dev_dbg(dev, "Unknown function %d.\n", fn);
957 }
958 mutex_unlock(&data->update_lock);
959
960 return count;
961}
962
963/* ---------------------------------------------------------------------
964 * Zone sysfs attributes
965 * ix = [0-2]
966 * --------------------------------------------------------------------- */
967
968#define SYS_ZONE_AUTO_CHANNELS_TEMP 0
969#define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1
970#define SYS_ZONE_AUTO_POINT1_TEMP 2
971#define SYS_ZONE_AUTO_POINT2_TEMP 3
972#define SYS_ZONE_AUTO_POINT3_TEMP 4
973
974static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
975 char *buf)
976{
977 struct dme1737_data *data = dme1737_update_device(dev);
978 struct sensor_device_attribute_2
979 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
980 int ix = sensor_attr_2->index;
981 int fn = sensor_attr_2->nr;
982 int res;
983
984 switch (fn) {
985 case SYS_ZONE_AUTO_CHANNELS_TEMP:
986 /* check config2 for non-standard temp-to-zone mapping */
987 if ((ix == 1) && (data->config2 & 0x02))
988 res = 4;
989 else
990 res = 1 << ix;
991 break;
992 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
993 res = TEMP_FROM_REG(data->zone_low[ix], 8) -
994 TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix);
995 break;
996 case SYS_ZONE_AUTO_POINT1_TEMP:
997 res = TEMP_FROM_REG(data->zone_low[ix], 8);
998 break;
999 case SYS_ZONE_AUTO_POINT2_TEMP:
1000 /* pwm_freq holds the temp range bits in the upper nibble */
1001 res = TEMP_FROM_REG(data->zone_low[ix], 8) +
1002 TEMP_RANGE_FROM_REG(data->pwm_freq[ix]);
1003 break;
1004 case SYS_ZONE_AUTO_POINT3_TEMP:
1005 res = TEMP_FROM_REG(data->zone_abs[ix], 8);
1006 break;
1007 default:
1008 res = 0;
1009 dev_dbg(dev, "Unknown function %d.\n", fn);
1010 }
1011
1012 return sprintf(buf, "%d\n", res);
1013}
1014
1015static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
1016 const char *buf, size_t count)
1017{
1018 struct dme1737_data *data = dev_get_drvdata(dev);
1019 struct sensor_device_attribute_2
1020 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1021 int ix = sensor_attr_2->index;
1022 int fn = sensor_attr_2->nr;
1023 long val;
1024 int err;
1025
1026 err = kstrtol(buf, 10, &val);
1027 if (err)
1028 return err;
1029
1030 mutex_lock(&data->update_lock);
1031 switch (fn) {
1032 case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
1033 /* Refresh the cache */
1034 data->zone_low[ix] = dme1737_read(data,
1035 DME1737_REG_ZONE_LOW(ix));
1036 /* Modify the temp hyst value */
1037 data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(
1038 TEMP_FROM_REG(data->zone_low[ix], 8) -
1039 val, ix, dme1737_read(data,
1040 DME1737_REG_ZONE_HYST(ix == 2)));
1041 dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2),
1042 data->zone_hyst[ix == 2]);
1043 break;
1044 case SYS_ZONE_AUTO_POINT1_TEMP:
1045 data->zone_low[ix] = TEMP_TO_REG(val);
1046 dme1737_write(data, DME1737_REG_ZONE_LOW(ix),
1047 data->zone_low[ix]);
1048 break;
1049 case SYS_ZONE_AUTO_POINT2_TEMP:
1050 /* Refresh the cache */
1051 data->zone_low[ix] = dme1737_read(data,
1052 DME1737_REG_ZONE_LOW(ix));
1053 /*
1054 * Modify the temp range value (which is stored in the upper
1055 * nibble of the pwm_freq register)
1056 */
1057 data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val -
1058 TEMP_FROM_REG(data->zone_low[ix], 8),
1059 dme1737_read(data,
1060 DME1737_REG_PWM_FREQ(ix)));
1061 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1062 data->pwm_freq[ix]);
1063 break;
1064 case SYS_ZONE_AUTO_POINT3_TEMP:
1065 data->zone_abs[ix] = TEMP_TO_REG(val);
1066 dme1737_write(data, DME1737_REG_ZONE_ABS(ix),
1067 data->zone_abs[ix]);
1068 break;
1069 default:
1070 dev_dbg(dev, "Unknown function %d.\n", fn);
1071 }
1072 mutex_unlock(&data->update_lock);
1073
1074 return count;
1075}
1076
1077/* ---------------------------------------------------------------------
1078 * Fan sysfs attributes
1079 * ix = [0-5]
1080 * --------------------------------------------------------------------- */
1081
1082#define SYS_FAN_INPUT 0
1083#define SYS_FAN_MIN 1
1084#define SYS_FAN_MAX 2
1085#define SYS_FAN_ALARM 3
1086#define SYS_FAN_TYPE 4
1087
1088static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
1089 char *buf)
1090{
1091 struct dme1737_data *data = dme1737_update_device(dev);
1092 struct sensor_device_attribute_2
1093 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1094 int ix = sensor_attr_2->index;
1095 int fn = sensor_attr_2->nr;
1096 int res;
1097
1098 switch (fn) {
1099 case SYS_FAN_INPUT:
1100 res = FAN_FROM_REG(data->fan[ix],
1101 ix < 4 ? 0 :
1102 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1103 break;
1104 case SYS_FAN_MIN:
1105 res = FAN_FROM_REG(data->fan_min[ix],
1106 ix < 4 ? 0 :
1107 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1108 break;
1109 case SYS_FAN_MAX:
1110 /* only valid for fan[5-6] */
1111 res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]);
1112 break;
1113 case SYS_FAN_ALARM:
1114 res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01;
1115 break;
1116 case SYS_FAN_TYPE:
1117 /* only valid for fan[1-4] */
1118 res = FAN_TYPE_FROM_REG(data->fan_opt[ix]);
1119 break;
1120 default:
1121 res = 0;
1122 dev_dbg(dev, "Unknown function %d.\n", fn);
1123 }
1124
1125 return sprintf(buf, "%d\n", res);
1126}
1127
1128static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
1129 const char *buf, size_t count)
1130{
1131 struct dme1737_data *data = dev_get_drvdata(dev);
1132 struct sensor_device_attribute_2
1133 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1134 int ix = sensor_attr_2->index;
1135 int fn = sensor_attr_2->nr;
1136 long val;
1137 int err;
1138
1139 err = kstrtol(buf, 10, &val);
1140 if (err)
1141 return err;
1142
1143 mutex_lock(&data->update_lock);
1144 switch (fn) {
1145 case SYS_FAN_MIN:
1146 if (ix < 4) {
1147 data->fan_min[ix] = FAN_TO_REG(val, 0);
1148 } else {
1149 /* Refresh the cache */
1150 data->fan_opt[ix] = dme1737_read(data,
1151 DME1737_REG_FAN_OPT(ix));
1152 /* Modify the fan min value */
1153 data->fan_min[ix] = FAN_TO_REG(val,
1154 FAN_TPC_FROM_REG(data->fan_opt[ix]));
1155 }
1156 dme1737_write(data, DME1737_REG_FAN_MIN(ix),
1157 data->fan_min[ix] & 0xff);
1158 dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1,
1159 data->fan_min[ix] >> 8);
1160 break;
1161 case SYS_FAN_MAX:
1162 /* Only valid for fan[5-6] */
1163 data->fan_max[ix - 4] = FAN_MAX_TO_REG(val);
1164 dme1737_write(data, DME1737_REG_FAN_MAX(ix),
1165 data->fan_max[ix - 4]);
1166 break;
1167 case SYS_FAN_TYPE:
1168 /* Only valid for fan[1-4] */
1169 if (!(val == 1 || val == 2 || val == 4)) {
1170 count = -EINVAL;
1171 dev_warn(dev, "Fan type value %ld not "
1172 "supported. Choose one of 1, 2, or 4.\n",
1173 val);
1174 goto exit;
1175 }
1176 data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data,
1177 DME1737_REG_FAN_OPT(ix)));
1178 dme1737_write(data, DME1737_REG_FAN_OPT(ix),
1179 data->fan_opt[ix]);
1180 break;
1181 default:
1182 dev_dbg(dev, "Unknown function %d.\n", fn);
1183 }
1184exit:
1185 mutex_unlock(&data->update_lock);
1186
1187 return count;
1188}
1189
1190/* ---------------------------------------------------------------------
1191 * PWM sysfs attributes
1192 * ix = [0-4]
1193 * --------------------------------------------------------------------- */
1194
1195#define SYS_PWM 0
1196#define SYS_PWM_FREQ 1
1197#define SYS_PWM_ENABLE 2
1198#define SYS_PWM_RAMP_RATE 3
1199#define SYS_PWM_AUTO_CHANNELS_ZONE 4
1200#define SYS_PWM_AUTO_PWM_MIN 5
1201#define SYS_PWM_AUTO_POINT1_PWM 6
1202#define SYS_PWM_AUTO_POINT2_PWM 7
1203
1204static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
1205 char *buf)
1206{
1207 struct dme1737_data *data = dme1737_update_device(dev);
1208 struct sensor_device_attribute_2
1209 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1210 int ix = sensor_attr_2->index;
1211 int fn = sensor_attr_2->nr;
1212 int res;
1213
1214 switch (fn) {
1215 case SYS_PWM:
1216 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0)
1217 res = 255;
1218 else
1219 res = data->pwm[ix];
1220 break;
1221 case SYS_PWM_FREQ:
1222 res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
1223 break;
1224 case SYS_PWM_ENABLE:
1225 if (ix >= 3)
1226 res = 1; /* pwm[5-6] hard-wired to manual mode */
1227 else
1228 res = PWM_EN_FROM_REG(data->pwm_config[ix]);
1229 break;
1230 case SYS_PWM_RAMP_RATE:
1231 /* Only valid for pwm[1-3] */
1232 res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix);
1233 break;
1234 case SYS_PWM_AUTO_CHANNELS_ZONE:
1235 /* Only valid for pwm[1-3] */
1236 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2)
1237 res = PWM_ACZ_FROM_REG(data->pwm_config[ix]);
1238 else
1239 res = data->pwm_acz[ix];
1240 break;
1241 case SYS_PWM_AUTO_PWM_MIN:
1242 /* Only valid for pwm[1-3] */
1243 if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix))
1244 res = data->pwm_min[ix];
1245 else
1246 res = 0;
1247 break;
1248 case SYS_PWM_AUTO_POINT1_PWM:
1249 /* Only valid for pwm[1-3] */
1250 res = data->pwm_min[ix];
1251 break;
1252 case SYS_PWM_AUTO_POINT2_PWM:
1253 /* Only valid for pwm[1-3] */
1254 res = 255; /* hard-wired */
1255 break;
1256 default:
1257 res = 0;
1258 dev_dbg(dev, "Unknown function %d.\n", fn);
1259 }
1260
1261 return sprintf(buf, "%d\n", res);
1262}
1263
1264static struct attribute *dme1737_pwm_chmod_attr[];
1265static void dme1737_chmod_file(struct device*, struct attribute*, umode_t);
1266
1267static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
1268 const char *buf, size_t count)
1269{
1270 struct dme1737_data *data = dev_get_drvdata(dev);
1271 struct sensor_device_attribute_2
1272 *sensor_attr_2 = to_sensor_dev_attr_2(attr);
1273 int ix = sensor_attr_2->index;
1274 int fn = sensor_attr_2->nr;
1275 long val;
1276 int err;
1277
1278 err = kstrtol(buf, 10, &val);
1279 if (err)
1280 return err;
1281
1282 mutex_lock(&data->update_lock);
1283 switch (fn) {
1284 case SYS_PWM:
1285 data->pwm[ix] = SENSORS_LIMIT(val, 0, 255);
1286 dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]);
1287 break;
1288 case SYS_PWM_FREQ:
1289 data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data,
1290 DME1737_REG_PWM_FREQ(ix)));
1291 dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
1292 data->pwm_freq[ix]);
1293 break;
1294 case SYS_PWM_ENABLE:
1295 /* Only valid for pwm[1-3] */
1296 if (val < 0 || val > 2) {
1297 count = -EINVAL;
1298 dev_warn(dev, "PWM enable %ld not "
1299 "supported. Choose one of 0, 1, or 2.\n",
1300 val);
1301 goto exit;
1302 }
1303 /* Refresh the cache */
1304 data->pwm_config[ix] = dme1737_read(data,
1305 DME1737_REG_PWM_CONFIG(ix));
1306 if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) {
1307 /* Bail out if no change */
1308 goto exit;
1309 }
1310 /* Do some housekeeping if we are currently in auto mode */
1311 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1312 /* Save the current zone channel assignment */
1313 data->pwm_acz[ix] = PWM_ACZ_FROM_REG(
1314 data->pwm_config[ix]);
1315 /* Save the current ramp rate state and disable it */
1316 data->pwm_rr[ix > 0] = dme1737_read(data,
1317 DME1737_REG_PWM_RR(ix > 0));
1318 data->pwm_rr_en &= ~(1 << ix);
1319 if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) {
1320 data->pwm_rr_en |= (1 << ix);
1321 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix,
1322 data->pwm_rr[ix > 0]);
1323 dme1737_write(data,
1324 DME1737_REG_PWM_RR(ix > 0),
1325 data->pwm_rr[ix > 0]);
1326 }
1327 }
1328 /* Set the new PWM mode */
1329 switch (val) {
1330 case 0:
1331 /* Change permissions of pwm[ix] to read-only */
1332 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1333 S_IRUGO);
1334 /* Turn fan fully on */
1335 data->pwm_config[ix] = PWM_EN_TO_REG(0,
1336 data->pwm_config[ix]);
1337 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1338 data->pwm_config[ix]);
1339 break;
1340 case 1:
1341 /* Turn on manual mode */
1342 data->pwm_config[ix] = PWM_EN_TO_REG(1,
1343 data->pwm_config[ix]);
1344 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1345 data->pwm_config[ix]);
1346 /* Change permissions of pwm[ix] to read-writeable */
1347 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1348 S_IRUGO | S_IWUSR);
1349 break;
1350 case 2:
1351 /* Change permissions of pwm[ix] to read-only */
1352 dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
1353 S_IRUGO);
1354 /*
1355 * Turn on auto mode using the saved zone channel
1356 * assignment
1357 */
1358 data->pwm_config[ix] = PWM_ACZ_TO_REG(
1359 data->pwm_acz[ix],
1360 data->pwm_config[ix]);
1361 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1362 data->pwm_config[ix]);
1363 /* Enable PWM ramp rate if previously enabled */
1364 if (data->pwm_rr_en & (1 << ix)) {
1365 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix,
1366 dme1737_read(data,
1367 DME1737_REG_PWM_RR(ix > 0)));
1368 dme1737_write(data,
1369 DME1737_REG_PWM_RR(ix > 0),
1370 data->pwm_rr[ix > 0]);
1371 }
1372 break;
1373 }
1374 break;
1375 case SYS_PWM_RAMP_RATE:
1376 /* Only valid for pwm[1-3] */
1377 /* Refresh the cache */
1378 data->pwm_config[ix] = dme1737_read(data,
1379 DME1737_REG_PWM_CONFIG(ix));
1380 data->pwm_rr[ix > 0] = dme1737_read(data,
1381 DME1737_REG_PWM_RR(ix > 0));
1382 /* Set the ramp rate value */
1383 if (val > 0) {
1384 data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix,
1385 data->pwm_rr[ix > 0]);
1386 }
1387 /*
1388 * Enable/disable the feature only if the associated PWM
1389 * output is in automatic mode.
1390 */
1391 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1392 data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix,
1393 data->pwm_rr[ix > 0]);
1394 }
1395 dme1737_write(data, DME1737_REG_PWM_RR(ix > 0),
1396 data->pwm_rr[ix > 0]);
1397 break;
1398 case SYS_PWM_AUTO_CHANNELS_ZONE:
1399 /* Only valid for pwm[1-3] */
1400 if (!(val == 1 || val == 2 || val == 4 ||
1401 val == 6 || val == 7)) {
1402 count = -EINVAL;
1403 dev_warn(dev, "PWM auto channels zone %ld "
1404 "not supported. Choose one of 1, 2, 4, 6, "
1405 "or 7.\n", val);
1406 goto exit;
1407 }
1408 /* Refresh the cache */
1409 data->pwm_config[ix] = dme1737_read(data,
1410 DME1737_REG_PWM_CONFIG(ix));
1411 if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
1412 /*
1413 * PWM is already in auto mode so update the temp
1414 * channel assignment
1415 */
1416 data->pwm_config[ix] = PWM_ACZ_TO_REG(val,
1417 data->pwm_config[ix]);
1418 dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
1419 data->pwm_config[ix]);
1420 } else {
1421 /*
1422 * PWM is not in auto mode so we save the temp
1423 * channel assignment for later use
1424 */
1425 data->pwm_acz[ix] = val;
1426 }
1427 break;
1428 case SYS_PWM_AUTO_PWM_MIN:
1429 /* Only valid for pwm[1-3] */
1430 /* Refresh the cache */
1431 data->pwm_min[ix] = dme1737_read(data,
1432 DME1737_REG_PWM_MIN(ix));
1433 /*
1434 * There are only 2 values supported for the auto_pwm_min
1435 * value: 0 or auto_point1_pwm. So if the temperature drops
1436 * below the auto_point1_temp_hyst value, the fan either turns
1437 * off or runs at auto_point1_pwm duty-cycle.
1438 */
1439 if (val > ((data->pwm_min[ix] + 1) / 2)) {
1440 data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
1441 dme1737_read(data,
1442 DME1737_REG_PWM_RR(0)));
1443 } else {
1444 data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
1445 dme1737_read(data,
1446 DME1737_REG_PWM_RR(0)));
1447 }
1448 dme1737_write(data, DME1737_REG_PWM_RR(0),
1449 data->pwm_rr[0]);
1450 break;
1451 case SYS_PWM_AUTO_POINT1_PWM:
1452 /* Only valid for pwm[1-3] */
1453 data->pwm_min[ix] = SENSORS_LIMIT(val, 0, 255);
1454 dme1737_write(data, DME1737_REG_PWM_MIN(ix),
1455 data->pwm_min[ix]);
1456 break;
1457 default:
1458 dev_dbg(dev, "Unknown function %d.\n", fn);
1459 }
1460exit:
1461 mutex_unlock(&data->update_lock);
1462
1463 return count;
1464}
1465
1466/* ---------------------------------------------------------------------
1467 * Miscellaneous sysfs attributes
1468 * --------------------------------------------------------------------- */
1469
1470static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
1471 char *buf)
1472{
1473 struct i2c_client *client = to_i2c_client(dev);
1474 struct dme1737_data *data = i2c_get_clientdata(client);
1475
1476 return sprintf(buf, "%d\n", data->vrm);
1477}
1478
1479static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
1480 const char *buf, size_t count)
1481{
1482 struct dme1737_data *data = dev_get_drvdata(dev);
1483 long val;
1484 int err;
1485
1486 err = kstrtol(buf, 10, &val);
1487 if (err)
1488 return err;
1489
1490 data->vrm = val;
1491 return count;
1492}
1493
1494static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
1495 char *buf)
1496{
1497 struct dme1737_data *data = dme1737_update_device(dev);
1498
1499 return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
1500}
1501
1502static ssize_t show_name(struct device *dev, struct device_attribute *attr,
1503 char *buf)
1504{
1505 struct dme1737_data *data = dev_get_drvdata(dev);
1506
1507 return sprintf(buf, "%s\n", data->name);
1508}
1509
1510/* ---------------------------------------------------------------------
1511 * Sysfs device attribute defines and structs
1512 * --------------------------------------------------------------------- */
1513
1514/* Voltages 0-7 */
1515
1516#define SENSOR_DEVICE_ATTR_IN(ix) \
1517static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
1518 show_in, NULL, SYS_IN_INPUT, ix); \
1519static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
1520 show_in, set_in, SYS_IN_MIN, ix); \
1521static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
1522 show_in, set_in, SYS_IN_MAX, ix); \
1523static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
1524 show_in, NULL, SYS_IN_ALARM, ix)
1525
1526SENSOR_DEVICE_ATTR_IN(0);
1527SENSOR_DEVICE_ATTR_IN(1);
1528SENSOR_DEVICE_ATTR_IN(2);
1529SENSOR_DEVICE_ATTR_IN(3);
1530SENSOR_DEVICE_ATTR_IN(4);
1531SENSOR_DEVICE_ATTR_IN(5);
1532SENSOR_DEVICE_ATTR_IN(6);
1533SENSOR_DEVICE_ATTR_IN(7);
1534
1535/* Temperatures 1-3 */
1536
1537#define SENSOR_DEVICE_ATTR_TEMP(ix) \
1538static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
1539 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
1540static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
1541 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
1542static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
1543 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
1544static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
1545 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
1546static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
1547 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
1548static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
1549 show_temp, NULL, SYS_TEMP_FAULT, ix-1)
1550
1551SENSOR_DEVICE_ATTR_TEMP(1);
1552SENSOR_DEVICE_ATTR_TEMP(2);
1553SENSOR_DEVICE_ATTR_TEMP(3);
1554
1555/* Zones 1-3 */
1556
1557#define SENSOR_DEVICE_ATTR_ZONE(ix) \
1558static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
1559 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
1560static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
1561 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
1562static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
1563 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
1564static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
1565 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
1566static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
1567 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
1568
1569SENSOR_DEVICE_ATTR_ZONE(1);
1570SENSOR_DEVICE_ATTR_ZONE(2);
1571SENSOR_DEVICE_ATTR_ZONE(3);
1572
1573/* Fans 1-4 */
1574
1575#define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
1576static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1577 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1578static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1579 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1580static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1581 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1582static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
1583 show_fan, set_fan, SYS_FAN_TYPE, ix-1)
1584
1585SENSOR_DEVICE_ATTR_FAN_1TO4(1);
1586SENSOR_DEVICE_ATTR_FAN_1TO4(2);
1587SENSOR_DEVICE_ATTR_FAN_1TO4(3);
1588SENSOR_DEVICE_ATTR_FAN_1TO4(4);
1589
1590/* Fans 5-6 */
1591
1592#define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
1593static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1594 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1595static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1596 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1597static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1598 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1599static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
1600 show_fan, set_fan, SYS_FAN_MAX, ix-1)
1601
1602SENSOR_DEVICE_ATTR_FAN_5TO6(5);
1603SENSOR_DEVICE_ATTR_FAN_5TO6(6);
1604
1605/* PWMs 1-3 */
1606
1607#define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
1608static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1609 show_pwm, set_pwm, SYS_PWM, ix-1); \
1610static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1611 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1612static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1613 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
1614static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
1615 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
1616static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
1617 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
1618static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
1619 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
1620static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
1621 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
1622static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
1623 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
1624
1625SENSOR_DEVICE_ATTR_PWM_1TO3(1);
1626SENSOR_DEVICE_ATTR_PWM_1TO3(2);
1627SENSOR_DEVICE_ATTR_PWM_1TO3(3);
1628
1629/* PWMs 5-6 */
1630
1631#define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
1632static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1633 show_pwm, set_pwm, SYS_PWM, ix-1); \
1634static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1635 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1636static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1637 show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
1638
1639SENSOR_DEVICE_ATTR_PWM_5TO6(5);
1640SENSOR_DEVICE_ATTR_PWM_5TO6(6);
1641
1642/* Misc */
1643
1644static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
1645static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
1646static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */
1647
1648/*
1649 * This struct holds all the attributes that are always present and need to be
1650 * created unconditionally. The attributes that need modification of their
1651 * permissions are created read-only and write permissions are added or removed
1652 * on the fly when required
1653 */
1654static struct attribute *dme1737_attr[] = {
1655 /* Voltages */
1656 &sensor_dev_attr_in0_input.dev_attr.attr,
1657 &sensor_dev_attr_in0_min.dev_attr.attr,
1658 &sensor_dev_attr_in0_max.dev_attr.attr,
1659 &sensor_dev_attr_in0_alarm.dev_attr.attr,
1660 &sensor_dev_attr_in1_input.dev_attr.attr,
1661 &sensor_dev_attr_in1_min.dev_attr.attr,
1662 &sensor_dev_attr_in1_max.dev_attr.attr,
1663 &sensor_dev_attr_in1_alarm.dev_attr.attr,
1664 &sensor_dev_attr_in2_input.dev_attr.attr,
1665 &sensor_dev_attr_in2_min.dev_attr.attr,
1666 &sensor_dev_attr_in2_max.dev_attr.attr,
1667 &sensor_dev_attr_in2_alarm.dev_attr.attr,
1668 &sensor_dev_attr_in3_input.dev_attr.attr,
1669 &sensor_dev_attr_in3_min.dev_attr.attr,
1670 &sensor_dev_attr_in3_max.dev_attr.attr,
1671 &sensor_dev_attr_in3_alarm.dev_attr.attr,
1672 &sensor_dev_attr_in4_input.dev_attr.attr,
1673 &sensor_dev_attr_in4_min.dev_attr.attr,
1674 &sensor_dev_attr_in4_max.dev_attr.attr,
1675 &sensor_dev_attr_in4_alarm.dev_attr.attr,
1676 &sensor_dev_attr_in5_input.dev_attr.attr,
1677 &sensor_dev_attr_in5_min.dev_attr.attr,
1678 &sensor_dev_attr_in5_max.dev_attr.attr,
1679 &sensor_dev_attr_in5_alarm.dev_attr.attr,
1680 &sensor_dev_attr_in6_input.dev_attr.attr,
1681 &sensor_dev_attr_in6_min.dev_attr.attr,
1682 &sensor_dev_attr_in6_max.dev_attr.attr,
1683 &sensor_dev_attr_in6_alarm.dev_attr.attr,
1684 /* Temperatures */
1685 &sensor_dev_attr_temp1_input.dev_attr.attr,
1686 &sensor_dev_attr_temp1_min.dev_attr.attr,
1687 &sensor_dev_attr_temp1_max.dev_attr.attr,
1688 &sensor_dev_attr_temp1_alarm.dev_attr.attr,
1689 &sensor_dev_attr_temp1_fault.dev_attr.attr,
1690 &sensor_dev_attr_temp2_input.dev_attr.attr,
1691 &sensor_dev_attr_temp2_min.dev_attr.attr,
1692 &sensor_dev_attr_temp2_max.dev_attr.attr,
1693 &sensor_dev_attr_temp2_alarm.dev_attr.attr,
1694 &sensor_dev_attr_temp2_fault.dev_attr.attr,
1695 &sensor_dev_attr_temp3_input.dev_attr.attr,
1696 &sensor_dev_attr_temp3_min.dev_attr.attr,
1697 &sensor_dev_attr_temp3_max.dev_attr.attr,
1698 &sensor_dev_attr_temp3_alarm.dev_attr.attr,
1699 &sensor_dev_attr_temp3_fault.dev_attr.attr,
1700 /* Zones */
1701 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1702 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1703 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1704 &sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr,
1705 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1706 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1707 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1708 &sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
1709 NULL
1710};
1711
1712static const struct attribute_group dme1737_group = {
1713 .attrs = dme1737_attr,
1714};
1715
1716/*
1717 * The following struct holds temp offset attributes, which are not available
1718 * in all chips. The following chips support them:
1719 * DME1737, SCH311x
1720 */
1721static struct attribute *dme1737_temp_offset_attr[] = {
1722 &sensor_dev_attr_temp1_offset.dev_attr.attr,
1723 &sensor_dev_attr_temp2_offset.dev_attr.attr,
1724 &sensor_dev_attr_temp3_offset.dev_attr.attr,
1725 NULL
1726};
1727
1728static const struct attribute_group dme1737_temp_offset_group = {
1729 .attrs = dme1737_temp_offset_attr,
1730};
1731
1732/*
1733 * The following struct holds VID related attributes, which are not available
1734 * in all chips. The following chips support them:
1735 * DME1737
1736 */
1737static struct attribute *dme1737_vid_attr[] = {
1738 &dev_attr_vrm.attr,
1739 &dev_attr_cpu0_vid.attr,
1740 NULL
1741};
1742
1743static const struct attribute_group dme1737_vid_group = {
1744 .attrs = dme1737_vid_attr,
1745};
1746
1747/*
1748 * The following struct holds temp zone 3 related attributes, which are not
1749 * available in all chips. The following chips support them:
1750 * DME1737, SCH311x, SCH5027
1751 */
1752static struct attribute *dme1737_zone3_attr[] = {
1753 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1754 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1755 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1756 &sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
1757 NULL
1758};
1759
1760static const struct attribute_group dme1737_zone3_group = {
1761 .attrs = dme1737_zone3_attr,
1762};
1763
1764
1765/*
1766 * The following struct holds temp zone hysteresis related attributes, which
1767 * are not available in all chips. The following chips support them:
1768 * DME1737, SCH311x
1769 */
1770static struct attribute *dme1737_zone_hyst_attr[] = {
1771 &sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
1772 &sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
1773 &sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
1774 NULL
1775};
1776
1777static const struct attribute_group dme1737_zone_hyst_group = {
1778 .attrs = dme1737_zone_hyst_attr,
1779};
1780
1781/*
1782 * The following struct holds voltage in7 related attributes, which
1783 * are not available in all chips. The following chips support them:
1784 * SCH5127
1785 */
1786static struct attribute *dme1737_in7_attr[] = {
1787 &sensor_dev_attr_in7_input.dev_attr.attr,
1788 &sensor_dev_attr_in7_min.dev_attr.attr,
1789 &sensor_dev_attr_in7_max.dev_attr.attr,
1790 &sensor_dev_attr_in7_alarm.dev_attr.attr,
1791 NULL
1792};
1793
1794static const struct attribute_group dme1737_in7_group = {
1795 .attrs = dme1737_in7_attr,
1796};
1797
1798/*
1799 * The following structs hold the PWM attributes, some of which are optional.
1800 * Their creation depends on the chip configuration which is determined during
1801 * module load.
1802 */
1803static struct attribute *dme1737_pwm1_attr[] = {
1804 &sensor_dev_attr_pwm1.dev_attr.attr,
1805 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1806 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1807 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1808 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1809 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1810 &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
1811 NULL
1812};
1813static struct attribute *dme1737_pwm2_attr[] = {
1814 &sensor_dev_attr_pwm2.dev_attr.attr,
1815 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1816 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1817 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1818 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1819 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1820 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
1821 NULL
1822};
1823static struct attribute *dme1737_pwm3_attr[] = {
1824 &sensor_dev_attr_pwm3.dev_attr.attr,
1825 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1826 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1827 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1828 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1829 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1830 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1831 NULL
1832};
1833static struct attribute *dme1737_pwm5_attr[] = {
1834 &sensor_dev_attr_pwm5.dev_attr.attr,
1835 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1836 &sensor_dev_attr_pwm5_enable.dev_attr.attr,
1837 NULL
1838};
1839static struct attribute *dme1737_pwm6_attr[] = {
1840 &sensor_dev_attr_pwm6.dev_attr.attr,
1841 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1842 &sensor_dev_attr_pwm6_enable.dev_attr.attr,
1843 NULL
1844};
1845
1846static const struct attribute_group dme1737_pwm_group[] = {
1847 { .attrs = dme1737_pwm1_attr },
1848 { .attrs = dme1737_pwm2_attr },
1849 { .attrs = dme1737_pwm3_attr },
1850 { .attrs = NULL },
1851 { .attrs = dme1737_pwm5_attr },
1852 { .attrs = dme1737_pwm6_attr },
1853};
1854
1855/*
1856 * The following struct holds auto PWM min attributes, which are not available
1857 * in all chips. Their creation depends on the chip type which is determined
1858 * during module load.
1859 */
1860static struct attribute *dme1737_auto_pwm_min_attr[] = {
1861 &sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1862 &sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1863 &sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1864};
1865
1866/*
1867 * The following structs hold the fan attributes, some of which are optional.
1868 * Their creation depends on the chip configuration which is determined during
1869 * module load.
1870 */
1871static struct attribute *dme1737_fan1_attr[] = {
1872 &sensor_dev_attr_fan1_input.dev_attr.attr,
1873 &sensor_dev_attr_fan1_min.dev_attr.attr,
1874 &sensor_dev_attr_fan1_alarm.dev_attr.attr,
1875 &sensor_dev_attr_fan1_type.dev_attr.attr,
1876 NULL
1877};
1878static struct attribute *dme1737_fan2_attr[] = {
1879 &sensor_dev_attr_fan2_input.dev_attr.attr,
1880 &sensor_dev_attr_fan2_min.dev_attr.attr,
1881 &sensor_dev_attr_fan2_alarm.dev_attr.attr,
1882 &sensor_dev_attr_fan2_type.dev_attr.attr,
1883 NULL
1884};
1885static struct attribute *dme1737_fan3_attr[] = {
1886 &sensor_dev_attr_fan3_input.dev_attr.attr,
1887 &sensor_dev_attr_fan3_min.dev_attr.attr,
1888 &sensor_dev_attr_fan3_alarm.dev_attr.attr,
1889 &sensor_dev_attr_fan3_type.dev_attr.attr,
1890 NULL
1891};
1892static struct attribute *dme1737_fan4_attr[] = {
1893 &sensor_dev_attr_fan4_input.dev_attr.attr,
1894 &sensor_dev_attr_fan4_min.dev_attr.attr,
1895 &sensor_dev_attr_fan4_alarm.dev_attr.attr,
1896 &sensor_dev_attr_fan4_type.dev_attr.attr,
1897 NULL
1898};
1899static struct attribute *dme1737_fan5_attr[] = {
1900 &sensor_dev_attr_fan5_input.dev_attr.attr,
1901 &sensor_dev_attr_fan5_min.dev_attr.attr,
1902 &sensor_dev_attr_fan5_alarm.dev_attr.attr,
1903 &sensor_dev_attr_fan5_max.dev_attr.attr,
1904 NULL
1905};
1906static struct attribute *dme1737_fan6_attr[] = {
1907 &sensor_dev_attr_fan6_input.dev_attr.attr,
1908 &sensor_dev_attr_fan6_min.dev_attr.attr,
1909 &sensor_dev_attr_fan6_alarm.dev_attr.attr,
1910 &sensor_dev_attr_fan6_max.dev_attr.attr,
1911 NULL
1912};
1913
1914static const struct attribute_group dme1737_fan_group[] = {
1915 { .attrs = dme1737_fan1_attr },
1916 { .attrs = dme1737_fan2_attr },
1917 { .attrs = dme1737_fan3_attr },
1918 { .attrs = dme1737_fan4_attr },
1919 { .attrs = dme1737_fan5_attr },
1920 { .attrs = dme1737_fan6_attr },
1921};
1922
1923/*
1924 * The permissions of the following zone attributes are changed to read-
1925 * writeable if the chip is *not* locked. Otherwise they stay read-only.
1926 */
1927static struct attribute *dme1737_zone_chmod_attr[] = {
1928 &sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
1929 &sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
1930 &sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
1931 &sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
1932 &sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
1933 &sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
1934 NULL
1935};
1936
1937static const struct attribute_group dme1737_zone_chmod_group = {
1938 .attrs = dme1737_zone_chmod_attr,
1939};
1940
1941
1942/*
1943 * The permissions of the following zone 3 attributes are changed to read-
1944 * writeable if the chip is *not* locked. Otherwise they stay read-only.
1945 */
1946static struct attribute *dme1737_zone3_chmod_attr[] = {
1947 &sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
1948 &sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
1949 &sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
1950 NULL
1951};
1952
1953static const struct attribute_group dme1737_zone3_chmod_group = {
1954 .attrs = dme1737_zone3_chmod_attr,
1955};
1956
1957/*
1958 * The permissions of the following PWM attributes are changed to read-
1959 * writeable if the chip is *not* locked and the respective PWM is available.
1960 * Otherwise they stay read-only.
1961 */
1962static struct attribute *dme1737_pwm1_chmod_attr[] = {
1963 &sensor_dev_attr_pwm1_freq.dev_attr.attr,
1964 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
1965 &sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
1966 &sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
1967 &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
1968 NULL
1969};
1970static struct attribute *dme1737_pwm2_chmod_attr[] = {
1971 &sensor_dev_attr_pwm2_freq.dev_attr.attr,
1972 &sensor_dev_attr_pwm2_enable.dev_attr.attr,
1973 &sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
1974 &sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
1975 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
1976 NULL
1977};
1978static struct attribute *dme1737_pwm3_chmod_attr[] = {
1979 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1980 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1981 &sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
1982 &sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
1983 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1984 NULL
1985};
1986static struct attribute *dme1737_pwm5_chmod_attr[] = {
1987 &sensor_dev_attr_pwm5.dev_attr.attr,
1988 &sensor_dev_attr_pwm5_freq.dev_attr.attr,
1989 NULL
1990};
1991static struct attribute *dme1737_pwm6_chmod_attr[] = {
1992 &sensor_dev_attr_pwm6.dev_attr.attr,
1993 &sensor_dev_attr_pwm6_freq.dev_attr.attr,
1994 NULL
1995};
1996
1997static const struct attribute_group dme1737_pwm_chmod_group[] = {
1998 { .attrs = dme1737_pwm1_chmod_attr },
1999 { .attrs = dme1737_pwm2_chmod_attr },
2000 { .attrs = dme1737_pwm3_chmod_attr },
2001 { .attrs = NULL },
2002 { .attrs = dme1737_pwm5_chmod_attr },
2003 { .attrs = dme1737_pwm6_chmod_attr },
2004};
2005
2006/*
2007 * Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
2008 * chip is not locked. Otherwise they are read-only.
2009 */
2010static struct attribute *dme1737_pwm_chmod_attr[] = {
2011 &sensor_dev_attr_pwm1.dev_attr.attr,
2012 &sensor_dev_attr_pwm2.dev_attr.attr,
2013 &sensor_dev_attr_pwm3.dev_attr.attr,
2014};
2015
2016/* ---------------------------------------------------------------------
2017 * Super-IO functions
2018 * --------------------------------------------------------------------- */
2019
2020static inline void dme1737_sio_enter(int sio_cip)
2021{
2022 outb(0x55, sio_cip);
2023}
2024
2025static inline void dme1737_sio_exit(int sio_cip)
2026{
2027 outb(0xaa, sio_cip);
2028}
2029
2030static inline int dme1737_sio_inb(int sio_cip, int reg)
2031{
2032 outb(reg, sio_cip);
2033 return inb(sio_cip + 1);
2034}
2035
2036static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
2037{
2038 outb(reg, sio_cip);
2039 outb(val, sio_cip + 1);
2040}
2041
2042/* ---------------------------------------------------------------------
2043 * Device initialization
2044 * --------------------------------------------------------------------- */
2045
2046static int dme1737_i2c_get_features(int, struct dme1737_data*);
2047
2048static void dme1737_chmod_file(struct device *dev,
2049 struct attribute *attr, umode_t mode)
2050{
2051 if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
2052 dev_warn(dev, "Failed to change permissions of %s.\n",
2053 attr->name);
2054 }
2055}
2056
2057static void dme1737_chmod_group(struct device *dev,
2058 const struct attribute_group *group,
2059 umode_t mode)
2060{
2061 struct attribute **attr;
2062
2063 for (attr = group->attrs; *attr; attr++)
2064 dme1737_chmod_file(dev, *attr, mode);
2065}
2066
2067static void dme1737_remove_files(struct device *dev)
2068{
2069 struct dme1737_data *data = dev_get_drvdata(dev);
2070 int ix;
2071
2072 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
2073 if (data->has_features & HAS_FAN(ix)) {
2074 sysfs_remove_group(&dev->kobj,
2075 &dme1737_fan_group[ix]);
2076 }
2077 }
2078
2079 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
2080 if (data->has_features & HAS_PWM(ix)) {
2081 sysfs_remove_group(&dev->kobj,
2082 &dme1737_pwm_group[ix]);
2083 if ((data->has_features & HAS_PWM_MIN) && ix < 3) {
2084 sysfs_remove_file(&dev->kobj,
2085 dme1737_auto_pwm_min_attr[ix]);
2086 }
2087 }
2088 }
2089
2090 if (data->has_features & HAS_TEMP_OFFSET)
2091 sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group);
2092 if (data->has_features & HAS_VID)
2093 sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
2094 if (data->has_features & HAS_ZONE3)
2095 sysfs_remove_group(&dev->kobj, &dme1737_zone3_group);
2096 if (data->has_features & HAS_ZONE_HYST)
2097 sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group);
2098 if (data->has_features & HAS_IN7)
2099 sysfs_remove_group(&dev->kobj, &dme1737_in7_group);
2100 sysfs_remove_group(&dev->kobj, &dme1737_group);
2101
2102 if (!data->client)
2103 sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
2104}
2105
2106static int dme1737_create_files(struct device *dev)
2107{
2108 struct dme1737_data *data = dev_get_drvdata(dev);
2109 int err, ix;
2110
2111 /* Create a name attribute for ISA devices */
2112 if (!data->client) {
2113 err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr);
2114 if (err)
2115 goto exit;
2116 }
2117
2118 /* Create standard sysfs attributes */
2119 err = sysfs_create_group(&dev->kobj, &dme1737_group);
2120 if (err)
2121 goto exit_remove;
2122
2123 /* Create chip-dependent sysfs attributes */
2124 if (data->has_features & HAS_TEMP_OFFSET) {
2125 err = sysfs_create_group(&dev->kobj,
2126 &dme1737_temp_offset_group);
2127 if (err)
2128 goto exit_remove;
2129 }
2130 if (data->has_features & HAS_VID) {
2131 err = sysfs_create_group(&dev->kobj, &dme1737_vid_group);
2132 if (err)
2133 goto exit_remove;
2134 }
2135 if (data->has_features & HAS_ZONE3) {
2136 err = sysfs_create_group(&dev->kobj, &dme1737_zone3_group);
2137 if (err)
2138 goto exit_remove;
2139 }
2140 if (data->has_features & HAS_ZONE_HYST) {
2141 err = sysfs_create_group(&dev->kobj, &dme1737_zone_hyst_group);
2142 if (err)
2143 goto exit_remove;
2144 }
2145 if (data->has_features & HAS_IN7) {
2146 err = sysfs_create_group(&dev->kobj, &dme1737_in7_group);
2147 if (err)
2148 goto exit_remove;
2149 }
2150
2151 /* Create fan sysfs attributes */
2152 for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
2153 if (data->has_features & HAS_FAN(ix)) {
2154 err = sysfs_create_group(&dev->kobj,
2155 &dme1737_fan_group[ix]);
2156 if (err)
2157 goto exit_remove;
2158 }
2159 }
2160
2161 /* Create PWM sysfs attributes */
2162 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
2163 if (data->has_features & HAS_PWM(ix)) {
2164 err = sysfs_create_group(&dev->kobj,
2165 &dme1737_pwm_group[ix]);
2166 if (err)
2167 goto exit_remove;
2168 if ((data->has_features & HAS_PWM_MIN) && (ix < 3)) {
2169 err = sysfs_create_file(&dev->kobj,
2170 dme1737_auto_pwm_min_attr[ix]);
2171 if (err)
2172 goto exit_remove;
2173 }
2174 }
2175 }
2176
2177 /*
2178 * Inform if the device is locked. Otherwise change the permissions of
2179 * selected attributes from read-only to read-writeable.
2180 */
2181 if (data->config & 0x02) {
2182 dev_info(dev, "Device is locked. Some attributes "
2183 "will be read-only.\n");
2184 } else {
2185 /* Change permissions of zone sysfs attributes */
2186 dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
2187 S_IRUGO | S_IWUSR);
2188
2189 /* Change permissions of chip-dependent sysfs attributes */
2190 if (data->has_features & HAS_TEMP_OFFSET) {
2191 dme1737_chmod_group(dev, &dme1737_temp_offset_group,
2192 S_IRUGO | S_IWUSR);
2193 }
2194 if (data->has_features & HAS_ZONE3) {
2195 dme1737_chmod_group(dev, &dme1737_zone3_chmod_group,
2196 S_IRUGO | S_IWUSR);
2197 }
2198 if (data->has_features & HAS_ZONE_HYST) {
2199 dme1737_chmod_group(dev, &dme1737_zone_hyst_group,
2200 S_IRUGO | S_IWUSR);
2201 }
2202
2203 /* Change permissions of PWM sysfs attributes */
2204 for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
2205 if (data->has_features & HAS_PWM(ix)) {
2206 dme1737_chmod_group(dev,
2207 &dme1737_pwm_chmod_group[ix],
2208 S_IRUGO | S_IWUSR);
2209 if ((data->has_features & HAS_PWM_MIN) &&
2210 ix < 3) {
2211 dme1737_chmod_file(dev,
2212 dme1737_auto_pwm_min_attr[ix],
2213 S_IRUGO | S_IWUSR);
2214 }
2215 }
2216 }
2217
2218 /* Change permissions of pwm[1-3] if in manual mode */
2219 for (ix = 0; ix < 3; ix++) {
2220 if ((data->has_features & HAS_PWM(ix)) &&
2221 (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
2222 dme1737_chmod_file(dev,
2223 dme1737_pwm_chmod_attr[ix],
2224 S_IRUGO | S_IWUSR);
2225 }
2226 }
2227 }
2228
2229 return 0;
2230
2231exit_remove:
2232 dme1737_remove_files(dev);
2233exit:
2234 return err;
2235}
2236
2237static int dme1737_init_device(struct device *dev)
2238{
2239 struct dme1737_data *data = dev_get_drvdata(dev);
2240 struct i2c_client *client = data->client;
2241 int ix;
2242 u8 reg;
2243
2244 /* Point to the right nominal voltages array */
2245 data->in_nominal = IN_NOMINAL(data->type);
2246
2247 data->config = dme1737_read(data, DME1737_REG_CONFIG);
2248 /* Inform if part is not monitoring/started */
2249 if (!(data->config & 0x01)) {
2250 if (!force_start) {
2251 dev_err(dev, "Device is not monitoring. "
2252 "Use the force_start load parameter to "
2253 "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, "Failed to query Super-IO for optional "
2294 "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, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, "
2322 "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, "Non-standard fan to pwm mapping: "
2335 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, "
2336 "fan4->pwm%d. Please report to the driver "
2337 "maintainer.\n",
2338 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2339 ((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1);
2340 } else if (!client && reg != 0x24) { /* ISA chip */
2341 dev_warn(dev, "Non-standard fan to pwm mapping: "
2342 "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. "
2343 "Please report to the driver maintainer.\n",
2344 (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
2345 ((reg >> 4) & 0x03) + 1);
2346 }
2347
2348 /*
2349 * Switch pwm[1-3] to manual mode if they are currently disabled and
2350 * set the duty-cycles to 0% (which is identical to the PWMs being
2351 * disabled).
2352 */
2353 if (!(data->config & 0x02)) {
2354 for (ix = 0; ix < 3; ix++) {
2355 data->pwm_config[ix] = dme1737_read(data,
2356 DME1737_REG_PWM_CONFIG(ix));
2357 if ((data->has_features & HAS_PWM(ix)) &&
2358 (PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
2359 dev_info(dev, "Switching pwm%d to "
2360 "manual mode.\n", ix + 1);
2361 data->pwm_config[ix] = PWM_EN_TO_REG(1,
2362 data->pwm_config[ix]);
2363 dme1737_write(data, DME1737_REG_PWM(ix), 0);
2364 dme1737_write(data,
2365 DME1737_REG_PWM_CONFIG(ix),
2366 data->pwm_config[ix]);
2367 }
2368 }
2369 }
2370
2371 /* Initialize the default PWM auto channels zone (acz) assignments */
2372 data->pwm_acz[0] = 1; /* pwm1 -> zone1 */
2373 data->pwm_acz[1] = 2; /* pwm2 -> zone2 */
2374 data->pwm_acz[2] = 4; /* pwm3 -> zone3 */
2375
2376 /* Set VRM */
2377 if (data->has_features & HAS_VID)
2378 data->vrm = vid_which_vrm();
2379
2380 return 0;
2381}
2382
2383/* ---------------------------------------------------------------------
2384 * I2C device detection and registration
2385 * --------------------------------------------------------------------- */
2386
2387static struct i2c_driver dme1737_i2c_driver;
2388
2389static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
2390{
2391 int err = 0, reg;
2392 u16 addr;
2393
2394 dme1737_sio_enter(sio_cip);
2395
2396 /*
2397 * Check device ID
2398 * We currently know about two kinds of DME1737 and SCH5027.
2399 */
2400 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2401 if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 ||
2402 reg == SCH5027_ID)) {
2403 err = -ENODEV;
2404 goto exit;
2405 }
2406
2407 /* Select logical device A (runtime registers) */
2408 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2409
2410 /* Get the base address of the runtime registers */
2411 addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2412 dme1737_sio_inb(sio_cip, 0x61);
2413 if (!addr) {
2414 err = -ENODEV;
2415 goto exit;
2416 }
2417
2418 /*
2419 * Read the runtime registers to determine which optional features
2420 * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
2421 * to '10' if the respective feature is enabled.
2422 */
2423 if ((inb(addr + 0x43) & 0x0c) == 0x08) /* fan6 */
2424 data->has_features |= HAS_FAN(5);
2425 if ((inb(addr + 0x44) & 0x0c) == 0x08) /* pwm6 */
2426 data->has_features |= HAS_PWM(5);
2427 if ((inb(addr + 0x45) & 0x0c) == 0x08) /* fan5 */
2428 data->has_features |= HAS_FAN(4);
2429 if ((inb(addr + 0x46) & 0x0c) == 0x08) /* pwm5 */
2430 data->has_features |= HAS_PWM(4);
2431
2432exit:
2433 dme1737_sio_exit(sio_cip);
2434
2435 return err;
2436}
2437
2438/* Return 0 if detection is successful, -ENODEV otherwise */
2439static int dme1737_i2c_detect(struct i2c_client *client,
2440 struct i2c_board_info *info)
2441{
2442 struct i2c_adapter *adapter = client->adapter;
2443 struct device *dev = &adapter->dev;
2444 u8 company, verstep = 0;
2445 const char *name;
2446
2447 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
2448 return -ENODEV;
2449
2450 company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY);
2451 verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP);
2452
2453 if (company == DME1737_COMPANY_SMSC &&
2454 verstep == SCH5027_VERSTEP) {
2455 name = "sch5027";
2456 } else if (company == DME1737_COMPANY_SMSC &&
2457 (verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
2458 name = "dme1737";
2459 } else {
2460 return -ENODEV;
2461 }
2462
2463 dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n",
2464 verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737",
2465 client->addr, verstep);
2466 strlcpy(info->type, name, I2C_NAME_SIZE);
2467
2468 return 0;
2469}
2470
2471static int dme1737_i2c_probe(struct i2c_client *client,
2472 const struct i2c_device_id *id)
2473{
2474 struct dme1737_data *data;
2475 struct device *dev = &client->dev;
2476 int err;
2477
2478 data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
2479 if (!data) {
2480 err = -ENOMEM;
2481 goto exit;
2482 }
2483
2484 i2c_set_clientdata(client, data);
2485 data->type = id->driver_data;
2486 data->client = client;
2487 data->name = client->name;
2488 mutex_init(&data->update_lock);
2489
2490 /* Initialize the DME1737 chip */
2491 err = dme1737_init_device(dev);
2492 if (err) {
2493 dev_err(dev, "Failed to initialize device.\n");
2494 goto exit_kfree;
2495 }
2496
2497 /* Create sysfs files */
2498 err = dme1737_create_files(dev);
2499 if (err) {
2500 dev_err(dev, "Failed to create sysfs files.\n");
2501 goto exit_kfree;
2502 }
2503
2504 /* Register device */
2505 data->hwmon_dev = hwmon_device_register(dev);
2506 if (IS_ERR(data->hwmon_dev)) {
2507 dev_err(dev, "Failed to register device.\n");
2508 err = PTR_ERR(data->hwmon_dev);
2509 goto exit_remove;
2510 }
2511
2512 return 0;
2513
2514exit_remove:
2515 dme1737_remove_files(dev);
2516exit_kfree:
2517 kfree(data);
2518exit:
2519 return err;
2520}
2521
2522static int dme1737_i2c_remove(struct i2c_client *client)
2523{
2524 struct dme1737_data *data = i2c_get_clientdata(client);
2525
2526 hwmon_device_unregister(data->hwmon_dev);
2527 dme1737_remove_files(&client->dev);
2528
2529 kfree(data);
2530 return 0;
2531}
2532
2533static const struct i2c_device_id dme1737_id[] = {
2534 { "dme1737", dme1737 },
2535 { "sch5027", sch5027 },
2536 { }
2537};
2538MODULE_DEVICE_TABLE(i2c, dme1737_id);
2539
2540static struct i2c_driver dme1737_i2c_driver = {
2541 .class = I2C_CLASS_HWMON,
2542 .driver = {
2543 .name = "dme1737",
2544 },
2545 .probe = dme1737_i2c_probe,
2546 .remove = dme1737_i2c_remove,
2547 .id_table = dme1737_id,
2548 .detect = dme1737_i2c_detect,
2549 .address_list = normal_i2c,
2550};
2551
2552/* ---------------------------------------------------------------------
2553 * ISA device detection and registration
2554 * --------------------------------------------------------------------- */
2555
2556static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
2557{
2558 int err = 0, reg;
2559 unsigned short base_addr;
2560
2561 dme1737_sio_enter(sio_cip);
2562
2563 /*
2564 * Check device ID
2565 * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127
2566 */
2567 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2568 if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID ||
2569 reg == SCH5127_ID)) {
2570 err = -ENODEV;
2571 goto exit;
2572 }
2573
2574 /* Select logical device A (runtime registers) */
2575 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2576
2577 /* Get the base address of the runtime registers */
2578 base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2579 dme1737_sio_inb(sio_cip, 0x61);
2580 if (!base_addr) {
2581 pr_err("Base address not set\n");
2582 err = -ENODEV;
2583 goto exit;
2584 }
2585
2586 /*
2587 * Access to the hwmon registers is through an index/data register
2588 * pair located at offset 0x70/0x71.
2589 */
2590 *addr = base_addr + 0x70;
2591
2592exit:
2593 dme1737_sio_exit(sio_cip);
2594 return err;
2595}
2596
2597static int __init dme1737_isa_device_add(unsigned short addr)
2598{
2599 struct resource res = {
2600 .start = addr,
2601 .end = addr + DME1737_EXTENT - 1,
2602 .name = "dme1737",
2603 .flags = IORESOURCE_IO,
2604 };
2605 int err;
2606
2607 err = acpi_check_resource_conflict(&res);
2608 if (err)
2609 goto exit;
2610
2611 pdev = platform_device_alloc("dme1737", addr);
2612 if (!pdev) {
2613 pr_err("Failed to allocate device\n");
2614 err = -ENOMEM;
2615 goto exit;
2616 }
2617
2618 err = platform_device_add_resources(pdev, &res, 1);
2619 if (err) {
2620 pr_err("Failed to add device resource (err = %d)\n", err);
2621 goto exit_device_put;
2622 }
2623
2624 err = platform_device_add(pdev);
2625 if (err) {
2626 pr_err("Failed to add device (err = %d)\n", err);
2627 goto exit_device_put;
2628 }
2629
2630 return 0;
2631
2632exit_device_put:
2633 platform_device_put(pdev);
2634 pdev = NULL;
2635exit:
2636 return err;
2637}
2638
2639static int __devinit dme1737_isa_probe(struct platform_device *pdev)
2640{
2641 u8 company, device;
2642 struct resource *res;
2643 struct dme1737_data *data;
2644 struct device *dev = &pdev->dev;
2645 int err;
2646
2647 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2648 if (!request_region(res->start, DME1737_EXTENT, "dme1737")) {
2649 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
2650 (unsigned short)res->start,
2651 (unsigned short)res->start + DME1737_EXTENT - 1);
2652 err = -EBUSY;
2653 goto exit;
2654 }
2655
2656 data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL);
2657 if (!data) {
2658 err = -ENOMEM;
2659 goto exit_release_region;
2660 }
2661
2662 data->addr = res->start;
2663 platform_set_drvdata(pdev, data);
2664
2665 /* Skip chip detection if module is loaded with force_id parameter */
2666 switch (force_id) {
2667 case SCH3112_ID:
2668 case SCH3114_ID:
2669 case SCH3116_ID:
2670 data->type = sch311x;
2671 break;
2672 case SCH5127_ID:
2673 data->type = sch5127;
2674 break;
2675 default:
2676 company = dme1737_read(data, DME1737_REG_COMPANY);
2677 device = dme1737_read(data, DME1737_REG_DEVICE);
2678
2679 if ((company == DME1737_COMPANY_SMSC) &&
2680 (device == SCH311X_DEVICE)) {
2681 data->type = sch311x;
2682 } else if ((company == DME1737_COMPANY_SMSC) &&
2683 (device == SCH5127_DEVICE)) {
2684 data->type = sch5127;
2685 } else {
2686 err = -ENODEV;
2687 goto exit_kfree;
2688 }
2689 }
2690
2691 if (data->type == sch5127)
2692 data->name = "sch5127";
2693 else
2694 data->name = "sch311x";
2695
2696 /* Initialize the mutex */
2697 mutex_init(&data->update_lock);
2698
2699 dev_info(dev, "Found a %s chip at 0x%04x\n",
2700 data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr);
2701
2702 /* Initialize the chip */
2703 err = dme1737_init_device(dev);
2704 if (err) {
2705 dev_err(dev, "Failed to initialize device.\n");
2706 goto exit_kfree;
2707 }
2708
2709 /* Create sysfs files */
2710 err = dme1737_create_files(dev);
2711 if (err) {
2712 dev_err(dev, "Failed to create sysfs files.\n");
2713 goto exit_kfree;
2714 }
2715
2716 /* Register device */
2717 data->hwmon_dev = hwmon_device_register(dev);
2718 if (IS_ERR(data->hwmon_dev)) {
2719 dev_err(dev, "Failed to register device.\n");
2720 err = PTR_ERR(data->hwmon_dev);
2721 goto exit_remove_files;
2722 }
2723
2724 return 0;
2725
2726exit_remove_files:
2727 dme1737_remove_files(dev);
2728exit_kfree:
2729 platform_set_drvdata(pdev, NULL);
2730 kfree(data);
2731exit_release_region:
2732 release_region(res->start, DME1737_EXTENT);
2733exit:
2734 return err;
2735}
2736
2737static int __devexit dme1737_isa_remove(struct platform_device *pdev)
2738{
2739 struct dme1737_data *data = platform_get_drvdata(pdev);
2740
2741 hwmon_device_unregister(data->hwmon_dev);
2742 dme1737_remove_files(&pdev->dev);
2743 release_region(data->addr, DME1737_EXTENT);
2744 platform_set_drvdata(pdev, NULL);
2745 kfree(data);
2746
2747 return 0;
2748}
2749
2750static struct platform_driver dme1737_isa_driver = {
2751 .driver = {
2752 .owner = THIS_MODULE,
2753 .name = "dme1737",
2754 },
2755 .probe = dme1737_isa_probe,
2756 .remove = __devexit_p(dme1737_isa_remove),
2757};
2758
2759/* ---------------------------------------------------------------------
2760 * Module initialization and cleanup
2761 * --------------------------------------------------------------------- */
2762
2763static int __init dme1737_init(void)
2764{
2765 int err;
2766 unsigned short addr;
2767
2768 err = i2c_add_driver(&dme1737_i2c_driver);
2769 if (err)
2770 goto exit;
2771
2772 if (dme1737_isa_detect(0x2e, &addr) &&
2773 dme1737_isa_detect(0x4e, &addr) &&
2774 (!probe_all_addr ||
2775 (dme1737_isa_detect(0x162e, &addr) &&
2776 dme1737_isa_detect(0x164e, &addr)))) {
2777 /* Return 0 if we didn't find an ISA device */
2778 return 0;
2779 }
2780
2781 err = platform_driver_register(&dme1737_isa_driver);
2782 if (err)
2783 goto exit_del_i2c_driver;
2784
2785 /* Sets global pdev as a side effect */
2786 err = dme1737_isa_device_add(addr);
2787 if (err)
2788 goto exit_del_isa_driver;
2789
2790 return 0;
2791
2792exit_del_isa_driver:
2793 platform_driver_unregister(&dme1737_isa_driver);
2794exit_del_i2c_driver:
2795 i2c_del_driver(&dme1737_i2c_driver);
2796exit:
2797 return err;
2798}
2799
2800static void __exit dme1737_exit(void)
2801{
2802 if (pdev) {
2803 platform_device_unregister(pdev);
2804 platform_driver_unregister(&dme1737_isa_driver);
2805 }
2806
2807 i2c_del_driver(&dme1737_i2c_driver);
2808}
2809
2810MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
2811MODULE_DESCRIPTION("DME1737 sensors");
2812MODULE_LICENSE("GPL");
2813
2814module_init(dme1737_init);
2815module_exit(dme1737_exit);