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 */
32 static struct platform_device *pdev;
33
34 /* Module load parameters */
35 static bool force_start;
36 module_param(force_start, bool, 0);
37 MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs");
38
39 static unsigned short force_id;
40 module_param(force_id, ushort, 0);
41 MODULE_PARM_DESC(force_id, "Override the detected device ID");
42
43 static bool probe_all_addr;
44 module_param(probe_all_addr, bool, 0);
45 MODULE_PARM_DESC(probe_all_addr,
46 "Include probing of non-standard LPC addresses");
47
48 /* Addresses to scan */
49 static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
50
51 enum 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))
100 static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5};
101 static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4};
102 static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
103 static 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
148 static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18};
149 static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
150 static 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
199 struct 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 bool valid; /* true 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 */
244 static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
245 3300};
246 static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
247 3300};
248 static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
249 3300};
250 static 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 */
IN_FROM_REG(int reg,int nominal,int res)262 static inline int IN_FROM_REG(int reg, int nominal, int res)
263 {
264 return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
265 }
266
IN_TO_REG(long val,int nominal)267 static 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 */
TEMP_FROM_REG(int reg,int res)279 static inline int TEMP_FROM_REG(int reg, int res)
280 {
281 return (reg * 1000) >> (res - 8);
282 }
283
TEMP_TO_REG(long val)284 static 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 */
291 static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
292 10000, 13333, 16000, 20000, 26666, 32000,
293 40000, 53333, 80000};
294
TEMP_RANGE_FROM_REG(int reg)295 static inline int TEMP_RANGE_FROM_REG(int reg)
296 {
297 return TEMP_RANGE[(reg >> 4) & 0x0f];
298 }
299
TEMP_RANGE_TO_REG(long val,int reg)300 static 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 */
TEMP_HYST_FROM_REG(int reg,int ix)318 static inline int TEMP_HYST_FROM_REG(int reg, int ix)
319 {
320 return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
321 }
322
TEMP_HYST_TO_REG(int temp,long hyst,int ix,int reg)323 static 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 */
FAN_FROM_REG(int reg,int tpc)332 static 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
FAN_TO_REG(long val,int tpc)340 static 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 */
FAN_TPC_FROM_REG(int reg)355 static 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 */
FAN_TYPE_FROM_REG(int reg)365 static 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
FAN_TYPE_TO_REG(long val,int reg)372 static 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 */
380 static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
381 0x11, 0x0f, 0x0e};
382
FAN_MAX_FROM_REG(int reg)383 static 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
FAN_MAX_TO_REG(long val)395 static 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 */
PWM_EN_FROM_REG(int reg)419 static 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
PWM_EN_TO_REG(int val,int reg)426 static 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 */
PWM_ACZ_FROM_REG(int reg)446 static 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
PWM_ACZ_TO_REG(long val,int reg)453 static 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 */
461 static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
462 15000, 20000, 30000, 25000, 0, 0, 0, 0};
463
PWM_FREQ_FROM_REG(int reg)464 static inline int PWM_FREQ_FROM_REG(int reg)
465 {
466 return PWM_FREQ[reg & 0x0f];
467 }
468
PWM_FREQ_TO_REG(long val,int reg)469 static 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 */
494 static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
495
PWM_RR_FROM_REG(int reg,int ix)496 static 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
PWM_RR_TO_REG(long val,int ix,int reg)503 static 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 */
PWM_RR_EN_FROM_REG(int reg,int ix)516 static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
517 {
518 return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
519 }
520
PWM_RR_EN_TO_REG(long val,int ix,int reg)521 static 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 */
PWM_OFF_FROM_REG(int reg,int ix)533 static inline int PWM_OFF_FROM_REG(int reg, int ix)
534 {
535 return (reg >> (ix + 5)) & 0x01;
536 }
537
PWM_OFF_TO_REG(int val,int ix,int reg)538 static 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
dme1737_read(const struct dme1737_data * data,u8 reg)552 static 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
dme1737_write(const struct dme1737_data * data,u8 reg,u8 val)573 static 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
dme1737_update_device(struct device * dev)594 static 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 = true;
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
show_in(struct device * dev,struct device_attribute * attr,char * buf)799 static 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
set_in(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)830 static 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
show_temp(struct device * dev,struct device_attribute * attr,char * buf)877 static 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
set_temp(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)914 static 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
show_zone(struct device * dev,struct device_attribute * attr,char * buf)965 static 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
set_zone(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1006 static 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
show_fan(struct device * dev,struct device_attribute * attr,char * buf)1080 static 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
set_fan(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1120 static 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 }
1176 exit:
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
show_pwm(struct device * dev,struct device_attribute * attr,char * buf)1196 static 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
1256 static struct attribute *dme1737_pwm_chmod_attr[];
1257 static void dme1737_chmod_file(struct device*, struct attribute*, umode_t);
1258
set_pwm(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1259 static 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 }
1452 exit:
1453 mutex_unlock(&data->update_lock);
1454
1455 return count;
1456 }
1457
1458 /* ---------------------------------------------------------------------
1459 * Miscellaneous sysfs attributes
1460 * --------------------------------------------------------------------- */
1461
vrm_show(struct device * dev,struct device_attribute * attr,char * buf)1462 static 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
vrm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1471 static 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
cpu0_vid_show(struct device * dev,struct device_attribute * attr,char * buf)1489 static 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
name_show(struct device * dev,struct device_attribute * attr,char * buf)1497 static 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) \
1512 static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
1513 show_in, NULL, SYS_IN_INPUT, ix); \
1514 static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
1515 show_in, set_in, SYS_IN_MIN, ix); \
1516 static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
1517 show_in, set_in, SYS_IN_MAX, ix); \
1518 static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
1519 show_in, NULL, SYS_IN_ALARM, ix)
1520
1521 SENSOR_DEVICE_ATTR_IN(0);
1522 SENSOR_DEVICE_ATTR_IN(1);
1523 SENSOR_DEVICE_ATTR_IN(2);
1524 SENSOR_DEVICE_ATTR_IN(3);
1525 SENSOR_DEVICE_ATTR_IN(4);
1526 SENSOR_DEVICE_ATTR_IN(5);
1527 SENSOR_DEVICE_ATTR_IN(6);
1528 SENSOR_DEVICE_ATTR_IN(7);
1529
1530 /* Temperatures 1-3 */
1531
1532 #define SENSOR_DEVICE_ATTR_TEMP(ix) \
1533 static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
1534 show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
1535 static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
1536 show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
1537 static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
1538 show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
1539 static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
1540 show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
1541 static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
1542 show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
1543 static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
1544 show_temp, NULL, SYS_TEMP_FAULT, ix-1)
1545
1546 SENSOR_DEVICE_ATTR_TEMP(1);
1547 SENSOR_DEVICE_ATTR_TEMP(2);
1548 SENSOR_DEVICE_ATTR_TEMP(3);
1549
1550 /* Zones 1-3 */
1551
1552 #define SENSOR_DEVICE_ATTR_ZONE(ix) \
1553 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
1554 show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
1555 static 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); \
1557 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
1558 show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
1559 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
1560 show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
1561 static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
1562 show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
1563
1564 SENSOR_DEVICE_ATTR_ZONE(1);
1565 SENSOR_DEVICE_ATTR_ZONE(2);
1566 SENSOR_DEVICE_ATTR_ZONE(3);
1567
1568 /* Fans 1-4 */
1569
1570 #define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
1571 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1572 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1573 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1574 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1575 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1576 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1577 static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
1578 show_fan, set_fan, SYS_FAN_TYPE, ix-1)
1579
1580 SENSOR_DEVICE_ATTR_FAN_1TO4(1);
1581 SENSOR_DEVICE_ATTR_FAN_1TO4(2);
1582 SENSOR_DEVICE_ATTR_FAN_1TO4(3);
1583 SENSOR_DEVICE_ATTR_FAN_1TO4(4);
1584
1585 /* Fans 5-6 */
1586
1587 #define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
1588 static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
1589 show_fan, NULL, SYS_FAN_INPUT, ix-1); \
1590 static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
1591 show_fan, set_fan, SYS_FAN_MIN, ix-1); \
1592 static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
1593 show_fan, NULL, SYS_FAN_ALARM, ix-1); \
1594 static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
1595 show_fan, set_fan, SYS_FAN_MAX, ix-1)
1596
1597 SENSOR_DEVICE_ATTR_FAN_5TO6(5);
1598 SENSOR_DEVICE_ATTR_FAN_5TO6(6);
1599
1600 /* PWMs 1-3 */
1601
1602 #define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
1603 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1604 show_pwm, set_pwm, SYS_PWM, ix-1); \
1605 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1606 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1607 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1608 show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
1609 static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
1610 show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
1611 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
1612 show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
1613 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
1614 show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
1615 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
1616 show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
1617 static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
1618 show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
1619
1620 SENSOR_DEVICE_ATTR_PWM_1TO3(1);
1621 SENSOR_DEVICE_ATTR_PWM_1TO3(2);
1622 SENSOR_DEVICE_ATTR_PWM_1TO3(3);
1623
1624 /* PWMs 5-6 */
1625
1626 #define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
1627 static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
1628 show_pwm, set_pwm, SYS_PWM, ix-1); \
1629 static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
1630 show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
1631 static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
1632 show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
1633
1634 SENSOR_DEVICE_ATTR_PWM_5TO6(5);
1635 SENSOR_DEVICE_ATTR_PWM_5TO6(6);
1636
1637 /* Misc */
1638
1639 static DEVICE_ATTR_RW(vrm);
1640 static DEVICE_ATTR_RO(cpu0_vid);
1641 static 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 */
1649 static 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
1707 static 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 */
1716 static 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
1723 static 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 */
1732 static struct attribute *dme1737_vid_attr[] = {
1733 &dev_attr_vrm.attr,
1734 &dev_attr_cpu0_vid.attr,
1735 NULL
1736 };
1737
1738 static 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 */
1747 static 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
1755 static 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 */
1765 static 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
1772 static 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 */
1781 static 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
1789 static 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 */
1798 static 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 };
1808 static 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 };
1818 static 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 };
1828 static 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 };
1834 static 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
1841 static 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 */
1855 static 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 */
1866 static 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 };
1873 static 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 };
1880 static 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 };
1887 static 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 };
1894 static 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 };
1901 static 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
1909 static 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 */
1922 static 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
1932 static 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 */
1941 static 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
1948 static 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 */
1957 static 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 };
1965 static 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 };
1973 static 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 };
1981 static 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 };
1986 static 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
1992 static 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 */
2005 static 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
dme1737_sio_enter(int sio_cip)2015 static inline void dme1737_sio_enter(int sio_cip)
2016 {
2017 outb(0x55, sio_cip);
2018 }
2019
dme1737_sio_exit(int sio_cip)2020 static inline void dme1737_sio_exit(int sio_cip)
2021 {
2022 outb(0xaa, sio_cip);
2023 }
2024
dme1737_sio_inb(int sio_cip,int reg)2025 static inline int dme1737_sio_inb(int sio_cip, int reg)
2026 {
2027 outb(reg, sio_cip);
2028 return inb(sio_cip + 1);
2029 }
2030
dme1737_sio_outb(int sio_cip,int reg,int val)2031 static 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
2041 static int dme1737_i2c_get_features(int, struct dme1737_data*);
2042
dme1737_chmod_file(struct device * dev,struct attribute * attr,umode_t mode)2043 static 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
dme1737_chmod_group(struct device * dev,const struct attribute_group * group,umode_t mode)2052 static 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
dme1737_remove_files(struct device * dev)2062 static 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
dme1737_create_files(struct device * dev)2101 static 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
2226 exit_remove:
2227 dme1737_remove_files(dev);
2228 exit:
2229 return err;
2230 }
2231
dme1737_init_device(struct device * dev)2232 static 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
2380 static struct i2c_driver dme1737_i2c_driver;
2381
dme1737_i2c_get_features(int sio_cip,struct dme1737_data * data)2382 static 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
2425 exit:
2426 dme1737_sio_exit(sio_cip);
2427
2428 return err;
2429 }
2430
2431 /* Return 0 if detection is successful, -ENODEV otherwise */
dme1737_i2c_detect(struct i2c_client * client,struct i2c_board_info * info)2432 static 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 strscpy(info->type, name, I2C_NAME_SIZE);
2460
2461 return 0;
2462 }
2463
dme1737_i2c_probe(struct i2c_client * client)2464 static int dme1737_i2c_probe(struct i2c_client *client)
2465 {
2466 struct dme1737_data *data;
2467 struct device *dev = &client->dev;
2468 int err;
2469
2470 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
2471 if (!data)
2472 return -ENOMEM;
2473
2474 i2c_set_clientdata(client, data);
2475 data->type = (uintptr_t)i2c_get_match_data(client);
2476 data->client = client;
2477 data->name = client->name;
2478 mutex_init(&data->update_lock);
2479
2480 /* Initialize the DME1737 chip */
2481 err = dme1737_init_device(dev);
2482 if (err) {
2483 dev_err(dev, "Failed to initialize device.\n");
2484 return err;
2485 }
2486
2487 /* Create sysfs files */
2488 err = dme1737_create_files(dev);
2489 if (err) {
2490 dev_err(dev, "Failed to create sysfs files.\n");
2491 return err;
2492 }
2493
2494 /* Register device */
2495 data->hwmon_dev = hwmon_device_register(dev);
2496 if (IS_ERR(data->hwmon_dev)) {
2497 dev_err(dev, "Failed to register device.\n");
2498 err = PTR_ERR(data->hwmon_dev);
2499 goto exit_remove;
2500 }
2501
2502 return 0;
2503
2504 exit_remove:
2505 dme1737_remove_files(dev);
2506 return err;
2507 }
2508
dme1737_i2c_remove(struct i2c_client * client)2509 static void dme1737_i2c_remove(struct i2c_client *client)
2510 {
2511 struct dme1737_data *data = i2c_get_clientdata(client);
2512
2513 hwmon_device_unregister(data->hwmon_dev);
2514 dme1737_remove_files(&client->dev);
2515 }
2516
2517 static const struct i2c_device_id dme1737_id[] = {
2518 { "dme1737", dme1737 },
2519 { "sch5027", sch5027 },
2520 { }
2521 };
2522 MODULE_DEVICE_TABLE(i2c, dme1737_id);
2523
2524 static struct i2c_driver dme1737_i2c_driver = {
2525 .class = I2C_CLASS_HWMON,
2526 .driver = {
2527 .name = "dme1737",
2528 },
2529 .probe = dme1737_i2c_probe,
2530 .remove = dme1737_i2c_remove,
2531 .id_table = dme1737_id,
2532 .detect = dme1737_i2c_detect,
2533 .address_list = normal_i2c,
2534 };
2535
2536 /* ---------------------------------------------------------------------
2537 * ISA device detection and registration
2538 * --------------------------------------------------------------------- */
2539
dme1737_isa_detect(int sio_cip,unsigned short * addr)2540 static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
2541 {
2542 int err = 0, reg;
2543 unsigned short base_addr;
2544
2545 dme1737_sio_enter(sio_cip);
2546
2547 /*
2548 * Check device ID
2549 * We currently know about SCH3112, SCH3114, SCH3116, and SCH5127
2550 */
2551 reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
2552 if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID ||
2553 reg == SCH5127_ID)) {
2554 err = -ENODEV;
2555 goto exit;
2556 }
2557
2558 /* Select logical device A (runtime registers) */
2559 dme1737_sio_outb(sio_cip, 0x07, 0x0a);
2560
2561 /* Get the base address of the runtime registers */
2562 base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
2563 dme1737_sio_inb(sio_cip, 0x61);
2564 if (!base_addr) {
2565 pr_err("Base address not set\n");
2566 err = -ENODEV;
2567 goto exit;
2568 }
2569
2570 /*
2571 * Access to the hwmon registers is through an index/data register
2572 * pair located at offset 0x70/0x71.
2573 */
2574 *addr = base_addr + 0x70;
2575
2576 exit:
2577 dme1737_sio_exit(sio_cip);
2578 return err;
2579 }
2580
dme1737_isa_device_add(unsigned short addr)2581 static int __init dme1737_isa_device_add(unsigned short addr)
2582 {
2583 struct resource res = {
2584 .start = addr,
2585 .end = addr + DME1737_EXTENT - 1,
2586 .name = "dme1737",
2587 .flags = IORESOURCE_IO,
2588 };
2589 int err;
2590
2591 err = acpi_check_resource_conflict(&res);
2592 if (err)
2593 goto exit;
2594
2595 pdev = platform_device_alloc("dme1737", addr);
2596 if (!pdev) {
2597 pr_err("Failed to allocate device\n");
2598 err = -ENOMEM;
2599 goto exit;
2600 }
2601
2602 err = platform_device_add_resources(pdev, &res, 1);
2603 if (err) {
2604 pr_err("Failed to add device resource (err = %d)\n", err);
2605 goto exit_device_put;
2606 }
2607
2608 err = platform_device_add(pdev);
2609 if (err) {
2610 pr_err("Failed to add device (err = %d)\n", err);
2611 goto exit_device_put;
2612 }
2613
2614 return 0;
2615
2616 exit_device_put:
2617 platform_device_put(pdev);
2618 pdev = NULL;
2619 exit:
2620 return err;
2621 }
2622
dme1737_isa_probe(struct platform_device * pdev)2623 static int dme1737_isa_probe(struct platform_device *pdev)
2624 {
2625 u8 company, device;
2626 struct resource *res;
2627 struct dme1737_data *data;
2628 struct device *dev = &pdev->dev;
2629 int err;
2630
2631 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
2632 if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) {
2633 dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
2634 (unsigned short)res->start,
2635 (unsigned short)res->start + DME1737_EXTENT - 1);
2636 return -EBUSY;
2637 }
2638
2639 data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
2640 if (!data)
2641 return -ENOMEM;
2642
2643 data->addr = res->start;
2644 platform_set_drvdata(pdev, data);
2645
2646 /* Skip chip detection if module is loaded with force_id parameter */
2647 switch (force_id) {
2648 case SCH3112_ID:
2649 case SCH3114_ID:
2650 case SCH3116_ID:
2651 data->type = sch311x;
2652 break;
2653 case SCH5127_ID:
2654 data->type = sch5127;
2655 break;
2656 default:
2657 company = dme1737_read(data, DME1737_REG_COMPANY);
2658 device = dme1737_read(data, DME1737_REG_DEVICE);
2659
2660 if ((company == DME1737_COMPANY_SMSC) &&
2661 (device == SCH311X_DEVICE)) {
2662 data->type = sch311x;
2663 } else if ((company == DME1737_COMPANY_SMSC) &&
2664 (device == SCH5127_DEVICE)) {
2665 data->type = sch5127;
2666 } else {
2667 return -ENODEV;
2668 }
2669 }
2670
2671 if (data->type == sch5127)
2672 data->name = "sch5127";
2673 else
2674 data->name = "sch311x";
2675
2676 /* Initialize the mutex */
2677 mutex_init(&data->update_lock);
2678
2679 dev_info(dev, "Found a %s chip at 0x%04x\n",
2680 data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr);
2681
2682 /* Initialize the chip */
2683 err = dme1737_init_device(dev);
2684 if (err) {
2685 dev_err(dev, "Failed to initialize device.\n");
2686 return err;
2687 }
2688
2689 /* Create sysfs files */
2690 err = dme1737_create_files(dev);
2691 if (err) {
2692 dev_err(dev, "Failed to create sysfs files.\n");
2693 return err;
2694 }
2695
2696 /* Register device */
2697 data->hwmon_dev = hwmon_device_register(dev);
2698 if (IS_ERR(data->hwmon_dev)) {
2699 dev_err(dev, "Failed to register device.\n");
2700 err = PTR_ERR(data->hwmon_dev);
2701 goto exit_remove_files;
2702 }
2703
2704 return 0;
2705
2706 exit_remove_files:
2707 dme1737_remove_files(dev);
2708 return err;
2709 }
2710
dme1737_isa_remove(struct platform_device * pdev)2711 static void dme1737_isa_remove(struct platform_device *pdev)
2712 {
2713 struct dme1737_data *data = platform_get_drvdata(pdev);
2714
2715 hwmon_device_unregister(data->hwmon_dev);
2716 dme1737_remove_files(&pdev->dev);
2717 }
2718
2719 static struct platform_driver dme1737_isa_driver = {
2720 .driver = {
2721 .name = "dme1737",
2722 },
2723 .probe = dme1737_isa_probe,
2724 .remove_new = dme1737_isa_remove,
2725 };
2726
2727 /* ---------------------------------------------------------------------
2728 * Module initialization and cleanup
2729 * --------------------------------------------------------------------- */
2730
dme1737_init(void)2731 static int __init dme1737_init(void)
2732 {
2733 int err;
2734 unsigned short addr;
2735
2736 err = i2c_add_driver(&dme1737_i2c_driver);
2737 if (err)
2738 goto exit;
2739
2740 if (dme1737_isa_detect(0x2e, &addr) &&
2741 dme1737_isa_detect(0x4e, &addr) &&
2742 (!probe_all_addr ||
2743 (dme1737_isa_detect(0x162e, &addr) &&
2744 dme1737_isa_detect(0x164e, &addr)))) {
2745 /* Return 0 if we didn't find an ISA device */
2746 return 0;
2747 }
2748
2749 err = platform_driver_register(&dme1737_isa_driver);
2750 if (err)
2751 goto exit_del_i2c_driver;
2752
2753 /* Sets global pdev as a side effect */
2754 err = dme1737_isa_device_add(addr);
2755 if (err)
2756 goto exit_del_isa_driver;
2757
2758 return 0;
2759
2760 exit_del_isa_driver:
2761 platform_driver_unregister(&dme1737_isa_driver);
2762 exit_del_i2c_driver:
2763 i2c_del_driver(&dme1737_i2c_driver);
2764 exit:
2765 return err;
2766 }
2767
dme1737_exit(void)2768 static void __exit dme1737_exit(void)
2769 {
2770 if (pdev) {
2771 platform_device_unregister(pdev);
2772 platform_driver_unregister(&dme1737_isa_driver);
2773 }
2774
2775 i2c_del_driver(&dme1737_i2c_driver);
2776 }
2777
2778 MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
2779 MODULE_DESCRIPTION("DME1737 sensors");
2780 MODULE_LICENSE("GPL");
2781
2782 module_init(dme1737_init);
2783 module_exit(dme1737_exit);
2784