2 * w83795.c - Linux kernel driver for hardware monitoring
3 * Copyright (C) 2008 Nuvoton Technology Corp.
5 * Copyright (C) 2010 Jean Delvare <khali@linux-fr.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation - version 2.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * Supports following chips:
23 * Chip #vin #fanin #pwm #temp #dts wchipid vendid i2c ISA
24 * w83795g 21 14 8 6 8 0x79 0x5ca3 yes no
25 * w83795adg 18 14 2 6 8 0x79 0x5ca3 yes no
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/i2c.h>
33 #include <linux/hwmon.h>
34 #include <linux/hwmon-sysfs.h>
35 #include <linux/err.h>
36 #include <linux/mutex.h>
37 #include <linux/delay.h>
39 /* Addresses to scan */
40 static const unsigned short normal_i2c
[] = {
41 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
46 module_param(reset
, bool, 0);
47 MODULE_PARM_DESC(reset
, "Set to 1 to reset chip, not recommended");
50 #define W83795_REG_BANKSEL 0x00
51 #define W83795_REG_VENDORID 0xfd
52 #define W83795_REG_CHIPID 0xfe
53 #define W83795_REG_DEVICEID 0xfb
54 #define W83795_REG_DEVICEID_A 0xff
56 #define W83795_REG_I2C_ADDR 0xfc
57 #define W83795_REG_CONFIG 0x01
58 #define W83795_REG_CONFIG_CONFIG48 0x04
59 #define W83795_REG_CONFIG_START 0x01
61 /* Multi-Function Pin Ctrl Registers */
62 #define W83795_REG_VOLT_CTRL1 0x02
63 #define W83795_REG_VOLT_CTRL2 0x03
64 #define W83795_REG_TEMP_CTRL1 0x04
65 #define W83795_REG_TEMP_CTRL2 0x05
66 #define W83795_REG_FANIN_CTRL1 0x06
67 #define W83795_REG_FANIN_CTRL2 0x07
68 #define W83795_REG_VMIGB_CTRL 0x08
72 #define TEMP_CRIT_HYST 2
74 #define TEMP_WARN_HYST 4
75 /* only crit and crit_hyst affect real-time alarm status
76 * current crit crit_hyst warn warn_hyst */
77 static const u16 W83795_REG_TEMP
[][5] = {
78 {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
79 {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
80 {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
81 {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
82 {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
83 {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
89 static const u16 W83795_REG_IN
[][3] = {
91 {0x10, 0x70, 0x71}, /* VSEN1 */
92 {0x11, 0x72, 0x73}, /* VSEN2 */
93 {0x12, 0x74, 0x75}, /* VSEN3 */
94 {0x13, 0x76, 0x77}, /* VSEN4 */
95 {0x14, 0x78, 0x79}, /* VSEN5 */
96 {0x15, 0x7a, 0x7b}, /* VSEN6 */
97 {0x16, 0x7c, 0x7d}, /* VSEN7 */
98 {0x17, 0x7e, 0x7f}, /* VSEN8 */
99 {0x18, 0x80, 0x81}, /* VSEN9 */
100 {0x19, 0x82, 0x83}, /* VSEN10 */
101 {0x1A, 0x84, 0x85}, /* VSEN11 */
102 {0x1B, 0x86, 0x87}, /* VTT */
103 {0x1C, 0x88, 0x89}, /* 3VDD */
104 {0x1D, 0x8a, 0x8b}, /* 3VSB */
105 {0x1E, 0x8c, 0x8d}, /* VBAT */
106 {0x1F, 0xa6, 0xa7}, /* VSEN12 */
107 {0x20, 0xaa, 0xab}, /* VSEN13 */
108 {0x21, 0x96, 0x97}, /* VSEN14 */
109 {0x22, 0x9a, 0x9b}, /* VSEN15 */
110 {0x23, 0x9e, 0x9f}, /* VSEN16 */
111 {0x24, 0xa2, 0xa3}, /* VSEN17 */
113 #define W83795_REG_VRLSB 0x3C
115 static const u8 W83795_REG_IN_HL_LSB
[] = {
119 0x94, /* VTT, 3VDD, 3VSB, 3VBAT */
128 #define IN_LSB_REG(index, type) \
129 (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
130 : (W83795_REG_IN_HL_LSB[(index)] + 1))
132 #define IN_LSB_SHIFT 0
134 static const u8 IN_LSB_SHIFT_IDX
[][2] = {
135 /* High/Low LSB shift, LSB No. */
136 {0x00, 0x00}, /* VSEN1 */
137 {0x02, 0x00}, /* VSEN2 */
138 {0x04, 0x00}, /* VSEN3 */
139 {0x06, 0x00}, /* VSEN4 */
140 {0x00, 0x01}, /* VSEN5 */
141 {0x02, 0x01}, /* VSEN6 */
142 {0x04, 0x01}, /* VSEN7 */
143 {0x06, 0x01}, /* VSEN8 */
144 {0x00, 0x02}, /* VSEN9 */
145 {0x02, 0x02}, /* VSEN10 */
146 {0x04, 0x02}, /* VSEN11 */
147 {0x00, 0x03}, /* VTT */
148 {0x02, 0x03}, /* 3VDD */
149 {0x04, 0x03}, /* 3VSB */
150 {0x06, 0x03}, /* VBAT */
151 {0x06, 0x04}, /* VSEN12 */
152 {0x06, 0x05}, /* VSEN13 */
153 {0x06, 0x06}, /* VSEN14 */
154 {0x06, 0x07}, /* VSEN15 */
155 {0x06, 0x08}, /* VSEN16 */
156 {0x06, 0x09}, /* VSEN17 */
160 #define W83795_REG_FAN(index) (0x2E + (index))
161 #define W83795_REG_FAN_MIN_HL(index) (0xB6 + (index))
162 #define W83795_REG_FAN_MIN_LSB(index) (0xC4 + (index) / 2)
163 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
164 (((index) & 1) ? 4 : 0)
166 #define W83795_REG_VID_CTRL 0x6A
168 #define W83795_REG_ALARM_CTRL 0x40
169 #define ALARM_CTRL_RTSACS (1 << 7)
170 #define W83795_REG_ALARM(index) (0x41 + (index))
171 #define W83795_REG_CLR_CHASSIS 0x4D
172 #define W83795_REG_BEEP(index) (0x50 + (index))
174 #define W83795_REG_OVT_CFG 0x58
175 #define OVT_CFG_SEL (1 << 7)
178 #define W83795_REG_FCMS1 0x201
179 #define W83795_REG_FCMS2 0x208
180 #define W83795_REG_TFMR(index) (0x202 + (index))
181 #define W83795_REG_FOMC 0x20F
183 #define W83795_REG_TSS(index) (0x209 + (index))
185 #define TSS_MAP_RESERVED 0xff
186 static const u8 tss_map
[4][6] = {
189 {10, 11, 12, 13, 2, 3},
190 { 4, 5, 4, 5, TSS_MAP_RESERVED
, TSS_MAP_RESERVED
},
196 #define PWM_NONSTOP 3
197 #define PWM_STOP_TIME 4
198 #define W83795_REG_PWM(index, nr) (0x210 + (nr) * 8 + (index))
200 #define W83795_REG_FTSH(index) (0x240 + (index) * 2)
201 #define W83795_REG_FTSL(index) (0x241 + (index) * 2)
202 #define W83795_REG_TFTS 0x250
204 #define TEMP_PWM_TTTI 0
205 #define TEMP_PWM_CTFS 1
206 #define TEMP_PWM_HCT 2
207 #define TEMP_PWM_HOT 3
208 #define W83795_REG_TTTI(index) (0x260 + (index))
209 #define W83795_REG_CTFS(index) (0x268 + (index))
210 #define W83795_REG_HT(index) (0x270 + (index))
214 #define W83795_REG_SF4_TEMP(temp_num, index) \
215 (0x280 + 0x10 * (temp_num) + (index))
216 #define W83795_REG_SF4_PWM(temp_num, index) \
217 (0x288 + 0x10 * (temp_num) + (index))
219 #define W83795_REG_DTSC 0x301
220 #define W83795_REG_DTSE 0x302
221 #define W83795_REG_DTS(index) (0x26 + (index))
222 #define W83795_REG_PECI_TBASE(index) (0x320 + (index))
225 #define DTS_CRIT_HYST 1
227 #define DTS_WARN_HYST 3
228 #define W83795_REG_DTS_EXT(index) (0xB2 + (index))
230 #define SETUP_PWM_DEFAULT 0
231 #define SETUP_PWM_UPTIME 1
232 #define SETUP_PWM_DOWNTIME 2
233 #define W83795_REG_SETUP_PWM(index) (0x20C + (index))
235 static inline u16
in_from_reg(u8 index
, u16 val
)
237 /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
238 if (index
>= 12 && index
<= 14)
244 static inline u16
in_to_reg(u8 index
, u16 val
)
246 if (index
>= 12 && index
<= 14)
252 static inline unsigned long fan_from_reg(u16 val
)
254 if ((val
== 0xfff) || (val
== 0))
256 return 1350000UL / val
;
259 static inline u16
fan_to_reg(long rpm
)
263 return SENSORS_LIMIT((1350000 + (rpm
>> 1)) / rpm
, 1, 0xffe);
266 static inline unsigned long time_from_reg(u8 reg
)
271 static inline u8
time_to_reg(unsigned long val
)
273 return SENSORS_LIMIT((val
+ 50) / 100, 0, 0xff);
276 static inline long temp_from_reg(s8 reg
)
281 static inline s8
temp_to_reg(long val
, s8 min
, s8 max
)
283 return SENSORS_LIMIT(val
/ 1000, min
, max
);
286 static const u16 pwm_freq_cksel0
[16] = {
287 1024, 512, 341, 256, 205, 171, 146, 128,
288 85, 64, 32, 16, 8, 4, 2, 1
291 static unsigned int pwm_freq_from_reg(u8 reg
, u16 clkin
)
293 unsigned long base_clock
;
296 base_clock
= clkin
* 1000 / ((clkin
== 48000) ? 384 : 256);
297 return base_clock
/ ((reg
& 0x7f) + 1);
299 return pwm_freq_cksel0
[reg
& 0x0f];
302 static u8
pwm_freq_to_reg(unsigned long val
, u16 clkin
)
304 unsigned long base_clock
;
306 unsigned long best0
, best1
;
308 /* Best fit for cksel = 0 */
309 for (reg0
= 0; reg0
< ARRAY_SIZE(pwm_freq_cksel0
) - 1; reg0
++) {
310 if (val
> (pwm_freq_cksel0
[reg0
] +
311 pwm_freq_cksel0
[reg0
+ 1]) / 2)
314 if (val
< 375) /* cksel = 1 can't beat this */
316 best0
= pwm_freq_cksel0
[reg0
];
318 /* Best fit for cksel = 1 */
319 base_clock
= clkin
* 1000 / ((clkin
== 48000) ? 384 : 256);
320 reg1
= SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock
, val
), 1, 128);
321 best1
= base_clock
/ reg1
;
322 reg1
= 0x80 | (reg1
- 1);
324 /* Choose the closest one */
325 if (abs(val
- best0
) > abs(val
- best1
))
331 enum chip_types
{w83795g
, w83795adg
};
334 struct device
*hwmon_dev
;
335 struct mutex update_lock
;
336 unsigned long last_updated
; /* In jiffies */
337 enum chip_types chip_type
;
341 u32 has_in
; /* Enable monitor VIN or not */
342 u8 has_dyn_in
; /* Only in2-0 can have this */
343 u16 in
[21][3]; /* Register value, read/high/low */
344 u8 in_lsb
[10][3]; /* LSB Register value, high/low */
345 u8 has_gain
; /* has gain: in17-20 * 8 */
347 u16 has_fan
; /* Enable fan14-1 or not */
348 u16 fan
[14]; /* Register value combine */
349 u16 fan_min
[14]; /* Register value combine */
351 u8 has_temp
; /* Enable monitor temp6-1 or not */
352 s8 temp
[6][5]; /* current, crit, crit_hyst, warn, warn_hyst */
353 u8 temp_read_vrlsb
[6];
354 u8 temp_mode
; /* Bit vector, 0 = TR, 1 = TD */
355 u8 temp_src
[3]; /* Register value */
357 u8 enable_dts
; /* Enable PECI and SB-TSI,
358 * bit 0: =1 enable, =0 disable,
359 * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
360 u8 has_dts
; /* Enable monitor DTS temp */
361 s8 dts
[8]; /* Register value */
362 u8 dts_read_vrlsb
[8]; /* Register value */
363 s8 dts_ext
[4]; /* Register value */
365 u8 has_pwm
; /* 795g supports 8 pwm, 795adg only supports 2,
366 * no config register, only affected by chip
368 u8 pwm
[8][5]; /* Register value, output, freq, start,
369 * non stop, stop time */
370 u16 clkin
; /* CLKIN frequency in kHz */
371 u8 pwm_fcms
[2]; /* Register value */
372 u8 pwm_tfmr
[6]; /* Register value */
373 u8 pwm_fomc
; /* Register value */
375 u16 target_speed
[8]; /* Register value, target speed for speed
377 u8 tol_speed
; /* tolerance of target speed */
378 u8 pwm_temp
[6][4]; /* TTTI, CTFS, HCT, HOT */
379 u8 sf4_reg
[6][2][7]; /* 6 temp, temp/dcpwm, 7 registers */
381 u8 setup_pwm
[3]; /* Register value */
383 u8 alarms
[6]; /* Register value */
385 u8 beeps
[6]; /* Register value */
389 char valid_pwm_config
;
394 * We assume that nobdody can change the bank outside the driver.
397 /* Must be called with data->update_lock held, except during initialization */
398 static int w83795_set_bank(struct i2c_client
*client
, u8 bank
)
400 struct w83795_data
*data
= i2c_get_clientdata(client
);
403 /* If the same bank is already set, nothing to do */
404 if ((data
->bank
& 0x07) == bank
)
407 /* Change to new bank, preserve all other bits */
408 bank
|= data
->bank
& ~0x07;
409 err
= i2c_smbus_write_byte_data(client
, W83795_REG_BANKSEL
, bank
);
411 dev_err(&client
->dev
,
412 "Failed to set bank to %d, err %d\n",
421 /* Must be called with data->update_lock held, except during initialization */
422 static u8
w83795_read(struct i2c_client
*client
, u16 reg
)
426 err
= w83795_set_bank(client
, reg
>> 8);
428 return 0x00; /* Arbitrary */
430 err
= i2c_smbus_read_byte_data(client
, reg
& 0xff);
432 dev_err(&client
->dev
,
433 "Failed to read from register 0x%03x, err %d\n",
435 return 0x00; /* Arbitrary */
440 /* Must be called with data->update_lock held, except during initialization */
441 static int w83795_write(struct i2c_client
*client
, u16 reg
, u8 value
)
445 err
= w83795_set_bank(client
, reg
>> 8);
449 err
= i2c_smbus_write_byte_data(client
, reg
& 0xff, value
);
451 dev_err(&client
->dev
,
452 "Failed to write to register 0x%03x, err %d\n",
457 static void w83795_update_limits(struct i2c_client
*client
)
459 struct w83795_data
*data
= i2c_get_clientdata(client
);
462 /* Read the voltage limits */
463 for (i
= 0; i
< ARRAY_SIZE(data
->in
); i
++) {
464 if (!(data
->has_in
& (1 << i
)))
466 data
->in
[i
][IN_MAX
] =
467 w83795_read(client
, W83795_REG_IN
[i
][IN_MAX
]);
468 data
->in
[i
][IN_LOW
] =
469 w83795_read(client
, W83795_REG_IN
[i
][IN_LOW
]);
471 for (i
= 0; i
< ARRAY_SIZE(data
->in_lsb
); i
++) {
472 if ((i
== 2 && data
->chip_type
== w83795adg
) ||
473 (i
>= 4 && !(data
->has_in
& (1 << (i
+ 11)))))
475 data
->in_lsb
[i
][IN_MAX
] =
476 w83795_read(client
, IN_LSB_REG(i
, IN_MAX
));
477 data
->in_lsb
[i
][IN_LOW
] =
478 w83795_read(client
, IN_LSB_REG(i
, IN_LOW
));
481 /* Read the fan limits */
482 for (i
= 0; i
< ARRAY_SIZE(data
->fan
); i
++) {
485 /* Each register contains LSB for 2 fans, but we want to
486 * read it only once to save time */
487 if ((i
& 1) == 0 && (data
->has_fan
& (3 << i
)))
488 lsb
= w83795_read(client
, W83795_REG_FAN_MIN_LSB(i
));
490 if (!(data
->has_fan
& (1 << i
)))
493 w83795_read(client
, W83795_REG_FAN_MIN_HL(i
)) << 4;
495 (lsb
>> W83795_REG_FAN_MIN_LSB_SHIFT(i
)) & 0x0F;
498 /* Read the temperature limits */
499 for (i
= 0; i
< ARRAY_SIZE(data
->temp
); i
++) {
500 if (!(data
->has_temp
& (1 << i
)))
502 for (limit
= TEMP_CRIT
; limit
<= TEMP_WARN_HYST
; limit
++)
503 data
->temp
[i
][limit
] =
504 w83795_read(client
, W83795_REG_TEMP
[i
][limit
]);
507 /* Read the DTS limits */
508 if (data
->enable_dts
) {
509 for (limit
= DTS_CRIT
; limit
<= DTS_WARN_HYST
; limit
++)
510 data
->dts_ext
[limit
] =
511 w83795_read(client
, W83795_REG_DTS_EXT(limit
));
514 /* Read beep settings */
515 if (data
->enable_beep
) {
516 for (i
= 0; i
< ARRAY_SIZE(data
->beeps
); i
++)
518 w83795_read(client
, W83795_REG_BEEP(i
));
521 data
->valid_limits
= 1;
524 static struct w83795_data
*w83795_update_pwm_config(struct device
*dev
)
526 struct i2c_client
*client
= to_i2c_client(dev
);
527 struct w83795_data
*data
= i2c_get_clientdata(client
);
530 mutex_lock(&data
->update_lock
);
532 if (data
->valid_pwm_config
)
535 /* Read temperature source selection */
536 for (i
= 0; i
< ARRAY_SIZE(data
->temp_src
); i
++)
537 data
->temp_src
[i
] = w83795_read(client
, W83795_REG_TSS(i
));
539 /* Read automatic fan speed control settings */
540 data
->pwm_fcms
[0] = w83795_read(client
, W83795_REG_FCMS1
);
541 data
->pwm_fcms
[1] = w83795_read(client
, W83795_REG_FCMS2
);
542 for (i
= 0; i
< ARRAY_SIZE(data
->pwm_tfmr
); i
++)
543 data
->pwm_tfmr
[i
] = w83795_read(client
, W83795_REG_TFMR(i
));
544 data
->pwm_fomc
= w83795_read(client
, W83795_REG_FOMC
);
545 for (i
= 0; i
< data
->has_pwm
; i
++) {
546 for (tmp
= PWM_FREQ
; tmp
<= PWM_STOP_TIME
; tmp
++)
548 w83795_read(client
, W83795_REG_PWM(i
, tmp
));
550 for (i
= 0; i
< ARRAY_SIZE(data
->target_speed
); i
++) {
551 data
->target_speed
[i
] =
552 w83795_read(client
, W83795_REG_FTSH(i
)) << 4;
553 data
->target_speed
[i
] |=
554 w83795_read(client
, W83795_REG_FTSL(i
)) >> 4;
556 data
->tol_speed
= w83795_read(client
, W83795_REG_TFTS
) & 0x3f;
558 for (i
= 0; i
< ARRAY_SIZE(data
->pwm_temp
); i
++) {
559 data
->pwm_temp
[i
][TEMP_PWM_TTTI
] =
560 w83795_read(client
, W83795_REG_TTTI(i
)) & 0x7f;
561 data
->pwm_temp
[i
][TEMP_PWM_CTFS
] =
562 w83795_read(client
, W83795_REG_CTFS(i
));
563 tmp
= w83795_read(client
, W83795_REG_HT(i
));
564 data
->pwm_temp
[i
][TEMP_PWM_HCT
] = tmp
>> 4;
565 data
->pwm_temp
[i
][TEMP_PWM_HOT
] = tmp
& 0x0f;
568 /* Read SmartFanIV trip points */
569 for (i
= 0; i
< ARRAY_SIZE(data
->sf4_reg
); i
++) {
570 for (tmp
= 0; tmp
< 7; tmp
++) {
571 data
->sf4_reg
[i
][SF4_TEMP
][tmp
] =
573 W83795_REG_SF4_TEMP(i
, tmp
));
574 data
->sf4_reg
[i
][SF4_PWM
][tmp
] =
575 w83795_read(client
, W83795_REG_SF4_PWM(i
, tmp
));
580 for (i
= 0; i
< ARRAY_SIZE(data
->setup_pwm
); i
++)
582 w83795_read(client
, W83795_REG_SETUP_PWM(i
));
584 data
->valid_pwm_config
= 1;
587 mutex_unlock(&data
->update_lock
);
591 static struct w83795_data
*w83795_update_device(struct device
*dev
)
593 struct i2c_client
*client
= to_i2c_client(dev
);
594 struct w83795_data
*data
= i2c_get_clientdata(client
);
599 mutex_lock(&data
->update_lock
);
601 if (!data
->valid_limits
)
602 w83795_update_limits(client
);
604 if (!(time_after(jiffies
, data
->last_updated
+ HZ
* 2)
608 /* Update the voltages value */
609 for (i
= 0; i
< ARRAY_SIZE(data
->in
); i
++) {
610 if (!(data
->has_in
& (1 << i
)))
612 tmp
= w83795_read(client
, W83795_REG_IN
[i
][IN_READ
]) << 2;
613 tmp
|= w83795_read(client
, W83795_REG_VRLSB
) >> 6;
614 data
->in
[i
][IN_READ
] = tmp
;
617 /* in0-2 can have dynamic limits (W83795G only) */
618 if (data
->has_dyn_in
) {
619 u8 lsb_max
= w83795_read(client
, IN_LSB_REG(0, IN_MAX
));
620 u8 lsb_low
= w83795_read(client
, IN_LSB_REG(0, IN_LOW
));
622 for (i
= 0; i
< 3; i
++) {
623 if (!(data
->has_dyn_in
& (1 << i
)))
625 data
->in
[i
][IN_MAX
] =
626 w83795_read(client
, W83795_REG_IN
[i
][IN_MAX
]);
627 data
->in
[i
][IN_LOW
] =
628 w83795_read(client
, W83795_REG_IN
[i
][IN_LOW
]);
629 data
->in_lsb
[i
][IN_MAX
] = (lsb_max
>> (2 * i
)) & 0x03;
630 data
->in_lsb
[i
][IN_LOW
] = (lsb_low
>> (2 * i
)) & 0x03;
635 for (i
= 0; i
< ARRAY_SIZE(data
->fan
); i
++) {
636 if (!(data
->has_fan
& (1 << i
)))
638 data
->fan
[i
] = w83795_read(client
, W83795_REG_FAN(i
)) << 4;
639 data
->fan
[i
] |= w83795_read(client
, W83795_REG_VRLSB
) >> 4;
642 /* Update temperature */
643 for (i
= 0; i
< ARRAY_SIZE(data
->temp
); i
++) {
644 data
->temp
[i
][TEMP_READ
] =
645 w83795_read(client
, W83795_REG_TEMP
[i
][TEMP_READ
]);
646 data
->temp_read_vrlsb
[i
] =
647 w83795_read(client
, W83795_REG_VRLSB
);
650 /* Update dts temperature */
651 if (data
->enable_dts
) {
652 for (i
= 0; i
< ARRAY_SIZE(data
->dts
); i
++) {
653 if (!(data
->has_dts
& (1 << i
)))
656 w83795_read(client
, W83795_REG_DTS(i
));
657 data
->dts_read_vrlsb
[i
] =
658 w83795_read(client
, W83795_REG_VRLSB
);
662 /* Update pwm output */
663 for (i
= 0; i
< data
->has_pwm
; i
++) {
664 data
->pwm
[i
][PWM_OUTPUT
] =
665 w83795_read(client
, W83795_REG_PWM(i
, PWM_OUTPUT
));
668 /* Update intrusion and alarms
669 * It is important to read intrusion first, because reading from
670 * register SMI STS6 clears the interrupt status temporarily. */
671 tmp
= w83795_read(client
, W83795_REG_ALARM_CTRL
);
672 /* Switch to interrupt status for intrusion if needed */
673 if (tmp
& ALARM_CTRL_RTSACS
)
674 w83795_write(client
, W83795_REG_ALARM_CTRL
,
675 tmp
& ~ALARM_CTRL_RTSACS
);
676 intrusion
= w83795_read(client
, W83795_REG_ALARM(5)) & (1 << 6);
677 /* Switch to real-time alarms */
678 w83795_write(client
, W83795_REG_ALARM_CTRL
, tmp
| ALARM_CTRL_RTSACS
);
679 for (i
= 0; i
< ARRAY_SIZE(data
->alarms
); i
++)
680 data
->alarms
[i
] = w83795_read(client
, W83795_REG_ALARM(i
));
681 data
->alarms
[5] |= intrusion
;
682 /* Restore original configuration if needed */
683 if (!(tmp
& ALARM_CTRL_RTSACS
))
684 w83795_write(client
, W83795_REG_ALARM_CTRL
,
685 tmp
& ~ALARM_CTRL_RTSACS
);
687 data
->last_updated
= jiffies
;
691 mutex_unlock(&data
->update_lock
);
699 #define ALARM_STATUS 0
700 #define BEEP_ENABLE 1
702 show_alarm_beep(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
704 struct w83795_data
*data
= w83795_update_device(dev
);
705 struct sensor_device_attribute_2
*sensor_attr
=
706 to_sensor_dev_attr_2(attr
);
707 int nr
= sensor_attr
->nr
;
708 int index
= sensor_attr
->index
>> 3;
709 int bit
= sensor_attr
->index
& 0x07;
712 if (nr
== ALARM_STATUS
)
713 val
= (data
->alarms
[index
] >> bit
) & 1;
714 else /* BEEP_ENABLE */
715 val
= (data
->beeps
[index
] >> bit
) & 1;
717 return sprintf(buf
, "%u\n", val
);
721 store_beep(struct device
*dev
, struct device_attribute
*attr
,
722 const char *buf
, size_t count
)
724 struct i2c_client
*client
= to_i2c_client(dev
);
725 struct w83795_data
*data
= i2c_get_clientdata(client
);
726 struct sensor_device_attribute_2
*sensor_attr
=
727 to_sensor_dev_attr_2(attr
);
728 int index
= sensor_attr
->index
>> 3;
729 int shift
= sensor_attr
->index
& 0x07;
730 u8 beep_bit
= 1 << shift
;
733 if (strict_strtoul(buf
, 10, &val
) < 0)
735 if (val
!= 0 && val
!= 1)
738 mutex_lock(&data
->update_lock
);
739 data
->beeps
[index
] = w83795_read(client
, W83795_REG_BEEP(index
));
740 data
->beeps
[index
] &= ~beep_bit
;
741 data
->beeps
[index
] |= val
<< shift
;
742 w83795_write(client
, W83795_REG_BEEP(index
), data
->beeps
[index
]);
743 mutex_unlock(&data
->update_lock
);
748 /* Write 0 to clear chassis alarm */
750 store_chassis_clear(struct device
*dev
,
751 struct device_attribute
*attr
, const char *buf
,
754 struct i2c_client
*client
= to_i2c_client(dev
);
755 struct w83795_data
*data
= i2c_get_clientdata(client
);
758 if (strict_strtoul(buf
, 10, &val
) < 0 || val
!= 0)
761 mutex_lock(&data
->update_lock
);
762 val
= w83795_read(client
, W83795_REG_CLR_CHASSIS
);
764 w83795_write(client
, W83795_REG_CLR_CHASSIS
, val
);
766 /* Clear status and force cache refresh */
767 w83795_read(client
, W83795_REG_ALARM(5));
769 mutex_unlock(&data
->update_lock
);
776 show_fan(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
778 struct sensor_device_attribute_2
*sensor_attr
=
779 to_sensor_dev_attr_2(attr
);
780 int nr
= sensor_attr
->nr
;
781 int index
= sensor_attr
->index
;
782 struct w83795_data
*data
= w83795_update_device(dev
);
786 val
= data
->fan
[index
] & 0x0fff;
788 val
= data
->fan_min
[index
] & 0x0fff;
790 return sprintf(buf
, "%lu\n", fan_from_reg(val
));
794 store_fan_min(struct device
*dev
, struct device_attribute
*attr
,
795 const char *buf
, size_t count
)
797 struct sensor_device_attribute_2
*sensor_attr
=
798 to_sensor_dev_attr_2(attr
);
799 int index
= sensor_attr
->index
;
800 struct i2c_client
*client
= to_i2c_client(dev
);
801 struct w83795_data
*data
= i2c_get_clientdata(client
);
804 if (strict_strtoul(buf
, 10, &val
))
806 val
= fan_to_reg(val
);
808 mutex_lock(&data
->update_lock
);
809 data
->fan_min
[index
] = val
;
810 w83795_write(client
, W83795_REG_FAN_MIN_HL(index
), (val
>> 4) & 0xff);
814 val
|= w83795_read(client
, W83795_REG_FAN_MIN_LSB(index
))
817 val
|= w83795_read(client
, W83795_REG_FAN_MIN_LSB(index
))
820 w83795_write(client
, W83795_REG_FAN_MIN_LSB(index
), val
& 0xff);
821 mutex_unlock(&data
->update_lock
);
827 show_pwm(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
829 struct w83795_data
*data
;
830 struct sensor_device_attribute_2
*sensor_attr
=
831 to_sensor_dev_attr_2(attr
);
832 int nr
= sensor_attr
->nr
;
833 int index
= sensor_attr
->index
;
836 data
= nr
== PWM_OUTPUT
? w83795_update_device(dev
)
837 : w83795_update_pwm_config(dev
);
841 val
= time_from_reg(data
->pwm
[index
][nr
]);
844 val
= pwm_freq_from_reg(data
->pwm
[index
][nr
], data
->clkin
);
847 val
= data
->pwm
[index
][nr
];
851 return sprintf(buf
, "%u\n", val
);
855 store_pwm(struct device
*dev
, struct device_attribute
*attr
,
856 const char *buf
, size_t count
)
858 struct i2c_client
*client
= to_i2c_client(dev
);
859 struct w83795_data
*data
= i2c_get_clientdata(client
);
860 struct sensor_device_attribute_2
*sensor_attr
=
861 to_sensor_dev_attr_2(attr
);
862 int nr
= sensor_attr
->nr
;
863 int index
= sensor_attr
->index
;
866 if (strict_strtoul(buf
, 10, &val
) < 0)
869 mutex_lock(&data
->update_lock
);
872 val
= time_to_reg(val
);
875 val
= pwm_freq_to_reg(val
, data
->clkin
);
878 val
= SENSORS_LIMIT(val
, 0, 0xff);
881 w83795_write(client
, W83795_REG_PWM(index
, nr
), val
);
882 data
->pwm
[index
][nr
] = val
;
883 mutex_unlock(&data
->update_lock
);
888 show_pwm_enable(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
890 struct sensor_device_attribute_2
*sensor_attr
=
891 to_sensor_dev_attr_2(attr
);
892 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
893 int index
= sensor_attr
->index
;
896 /* Speed cruise mode */
897 if (data
->pwm_fcms
[0] & (1 << index
)) {
901 /* Thermal cruise or SmartFan IV mode */
902 for (tmp
= 0; tmp
< 6; tmp
++) {
903 if (data
->pwm_tfmr
[tmp
] & (1 << index
)) {
912 return sprintf(buf
, "%u\n", tmp
);
916 store_pwm_enable(struct device
*dev
, struct device_attribute
*attr
,
917 const char *buf
, size_t count
)
919 struct i2c_client
*client
= to_i2c_client(dev
);
920 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
921 struct sensor_device_attribute_2
*sensor_attr
=
922 to_sensor_dev_attr_2(attr
);
923 int index
= sensor_attr
->index
;
927 if (strict_strtoul(buf
, 10, &val
) < 0)
929 if (val
< 1 || val
> 2)
932 mutex_lock(&data
->update_lock
);
935 /* Clear speed cruise mode bits */
936 data
->pwm_fcms
[0] &= ~(1 << index
);
937 w83795_write(client
, W83795_REG_FCMS1
, data
->pwm_fcms
[0]);
938 /* Clear thermal cruise mode bits */
939 for (i
= 0; i
< 6; i
++) {
940 data
->pwm_tfmr
[i
] &= ~(1 << index
);
941 w83795_write(client
, W83795_REG_TFMR(i
),
946 data
->pwm_fcms
[0] |= (1 << index
);
947 w83795_write(client
, W83795_REG_FCMS1
, data
->pwm_fcms
[0]);
950 mutex_unlock(&data
->update_lock
);
955 show_pwm_mode(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
957 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
958 int index
= to_sensor_dev_attr_2(attr
)->index
;
961 if (data
->pwm_fomc
& (1 << index
))
966 return sprintf(buf
, "%u\n", mode
);
970 * Check whether a given temperature source can ever be useful.
971 * Returns the number of selectable temperature channels which are
974 static int w83795_tss_useful(const struct w83795_data
*data
, int tsrc
)
978 for (i
= 0; i
< 4; i
++) {
979 if (tss_map
[i
][tsrc
] == TSS_MAP_RESERVED
)
981 if (tss_map
[i
][tsrc
] < 6) /* Analog */
982 useful
+= (data
->has_temp
>> tss_map
[i
][tsrc
]) & 1;
984 useful
+= (data
->has_dts
>> (tss_map
[i
][tsrc
] - 6)) & 1;
991 show_temp_src(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
993 struct sensor_device_attribute_2
*sensor_attr
=
994 to_sensor_dev_attr_2(attr
);
995 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
996 int index
= sensor_attr
->index
;
997 u8 tmp
= data
->temp_src
[index
/ 2];
1000 tmp
>>= 4; /* Pick high nibble */
1002 tmp
&= 0x0f; /* Pick low nibble */
1004 /* Look-up the actual temperature channel number */
1005 if (tmp
>= 4 || tss_map
[tmp
][index
] == TSS_MAP_RESERVED
)
1006 return -EINVAL
; /* Shouldn't happen */
1008 return sprintf(buf
, "%u\n", (unsigned int)tss_map
[tmp
][index
] + 1);
1012 store_temp_src(struct device
*dev
, struct device_attribute
*attr
,
1013 const char *buf
, size_t count
)
1015 struct i2c_client
*client
= to_i2c_client(dev
);
1016 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1017 struct sensor_device_attribute_2
*sensor_attr
=
1018 to_sensor_dev_attr_2(attr
);
1019 int index
= sensor_attr
->index
;
1021 unsigned long channel
;
1024 if (strict_strtoul(buf
, 10, &channel
) < 0 ||
1025 channel
< 1 || channel
> 14)
1028 /* Check if request can be fulfilled */
1029 for (tmp
= 0; tmp
< 4; tmp
++) {
1030 if (tss_map
[tmp
][index
] == channel
- 1)
1033 if (tmp
== 4) /* No match */
1036 mutex_lock(&data
->update_lock
);
1039 data
->temp_src
[val
] &= 0x0f;
1041 data
->temp_src
[val
] &= 0xf0;
1043 data
->temp_src
[val
] |= tmp
;
1044 w83795_write(client
, W83795_REG_TSS(val
), data
->temp_src
[val
]);
1045 mutex_unlock(&data
->update_lock
);
1050 #define TEMP_PWM_ENABLE 0
1051 #define TEMP_PWM_FAN_MAP 1
1053 show_temp_pwm_enable(struct device
*dev
, struct device_attribute
*attr
,
1056 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1057 struct sensor_device_attribute_2
*sensor_attr
=
1058 to_sensor_dev_attr_2(attr
);
1059 int nr
= sensor_attr
->nr
;
1060 int index
= sensor_attr
->index
;
1064 case TEMP_PWM_ENABLE
:
1065 tmp
= (data
->pwm_fcms
[1] >> index
) & 1;
1071 case TEMP_PWM_FAN_MAP
:
1072 tmp
= data
->pwm_tfmr
[index
];
1076 return sprintf(buf
, "%u\n", tmp
);
1080 store_temp_pwm_enable(struct device
*dev
, struct device_attribute
*attr
,
1081 const char *buf
, size_t count
)
1083 struct i2c_client
*client
= to_i2c_client(dev
);
1084 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1085 struct sensor_device_attribute_2
*sensor_attr
=
1086 to_sensor_dev_attr_2(attr
);
1087 int nr
= sensor_attr
->nr
;
1088 int index
= sensor_attr
->index
;
1091 if (strict_strtoul(buf
, 10, &tmp
) < 0)
1095 case TEMP_PWM_ENABLE
:
1096 if (tmp
!= 3 && tmp
!= 4)
1099 mutex_lock(&data
->update_lock
);
1100 data
->pwm_fcms
[1] &= ~(1 << index
);
1101 data
->pwm_fcms
[1] |= tmp
<< index
;
1102 w83795_write(client
, W83795_REG_FCMS2
, data
->pwm_fcms
[1]);
1103 mutex_unlock(&data
->update_lock
);
1105 case TEMP_PWM_FAN_MAP
:
1106 mutex_lock(&data
->update_lock
);
1107 tmp
= SENSORS_LIMIT(tmp
, 0, 0xff);
1108 w83795_write(client
, W83795_REG_TFMR(index
), tmp
);
1109 data
->pwm_tfmr
[index
] = tmp
;
1110 mutex_unlock(&data
->update_lock
);
1116 #define FANIN_TARGET 0
1119 show_fanin(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1121 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1122 struct sensor_device_attribute_2
*sensor_attr
=
1123 to_sensor_dev_attr_2(attr
);
1124 int nr
= sensor_attr
->nr
;
1125 int index
= sensor_attr
->index
;
1130 tmp
= fan_from_reg(data
->target_speed
[index
]);
1133 tmp
= data
->tol_speed
;
1137 return sprintf(buf
, "%u\n", tmp
);
1141 store_fanin(struct device
*dev
, struct device_attribute
*attr
,
1142 const char *buf
, size_t count
)
1144 struct i2c_client
*client
= to_i2c_client(dev
);
1145 struct w83795_data
*data
= i2c_get_clientdata(client
);
1146 struct sensor_device_attribute_2
*sensor_attr
=
1147 to_sensor_dev_attr_2(attr
);
1148 int nr
= sensor_attr
->nr
;
1149 int index
= sensor_attr
->index
;
1152 if (strict_strtoul(buf
, 10, &val
) < 0)
1155 mutex_lock(&data
->update_lock
);
1158 val
= fan_to_reg(SENSORS_LIMIT(val
, 0, 0xfff));
1159 w83795_write(client
, W83795_REG_FTSH(index
), val
>> 4);
1160 w83795_write(client
, W83795_REG_FTSL(index
), (val
<< 4) & 0xf0);
1161 data
->target_speed
[index
] = val
;
1164 val
= SENSORS_LIMIT(val
, 0, 0x3f);
1165 w83795_write(client
, W83795_REG_TFTS
, val
);
1166 data
->tol_speed
= val
;
1169 mutex_unlock(&data
->update_lock
);
1176 show_temp_pwm(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1178 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1179 struct sensor_device_attribute_2
*sensor_attr
=
1180 to_sensor_dev_attr_2(attr
);
1181 int nr
= sensor_attr
->nr
;
1182 int index
= sensor_attr
->index
;
1183 long tmp
= temp_from_reg(data
->pwm_temp
[index
][nr
]);
1185 return sprintf(buf
, "%ld\n", tmp
);
1189 store_temp_pwm(struct device
*dev
, struct device_attribute
*attr
,
1190 const char *buf
, size_t count
)
1192 struct i2c_client
*client
= to_i2c_client(dev
);
1193 struct w83795_data
*data
= i2c_get_clientdata(client
);
1194 struct sensor_device_attribute_2
*sensor_attr
=
1195 to_sensor_dev_attr_2(attr
);
1196 int nr
= sensor_attr
->nr
;
1197 int index
= sensor_attr
->index
;
1201 if (strict_strtoul(buf
, 10, &val
) < 0)
1205 mutex_lock(&data
->update_lock
);
1208 val
= SENSORS_LIMIT(val
, 0, 0x7f);
1209 w83795_write(client
, W83795_REG_TTTI(index
), val
);
1212 val
= SENSORS_LIMIT(val
, 0, 0x7f);
1213 w83795_write(client
, W83795_REG_CTFS(index
), val
);
1216 val
= SENSORS_LIMIT(val
, 0, 0x0f);
1217 tmp
= w83795_read(client
, W83795_REG_HT(index
));
1219 tmp
|= (val
<< 4) & 0xf0;
1220 w83795_write(client
, W83795_REG_HT(index
), tmp
);
1223 val
= SENSORS_LIMIT(val
, 0, 0x0f);
1224 tmp
= w83795_read(client
, W83795_REG_HT(index
));
1227 w83795_write(client
, W83795_REG_HT(index
), tmp
);
1230 data
->pwm_temp
[index
][nr
] = val
;
1231 mutex_unlock(&data
->update_lock
);
1237 show_sf4_pwm(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1239 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1240 struct sensor_device_attribute_2
*sensor_attr
=
1241 to_sensor_dev_attr_2(attr
);
1242 int nr
= sensor_attr
->nr
;
1243 int index
= sensor_attr
->index
;
1245 return sprintf(buf
, "%u\n", data
->sf4_reg
[index
][SF4_PWM
][nr
]);
1249 store_sf4_pwm(struct device
*dev
, struct device_attribute
*attr
,
1250 const char *buf
, size_t count
)
1252 struct i2c_client
*client
= to_i2c_client(dev
);
1253 struct w83795_data
*data
= i2c_get_clientdata(client
);
1254 struct sensor_device_attribute_2
*sensor_attr
=
1255 to_sensor_dev_attr_2(attr
);
1256 int nr
= sensor_attr
->nr
;
1257 int index
= sensor_attr
->index
;
1260 if (strict_strtoul(buf
, 10, &val
) < 0)
1263 mutex_lock(&data
->update_lock
);
1264 w83795_write(client
, W83795_REG_SF4_PWM(index
, nr
), val
);
1265 data
->sf4_reg
[index
][SF4_PWM
][nr
] = val
;
1266 mutex_unlock(&data
->update_lock
);
1272 show_sf4_temp(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1274 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1275 struct sensor_device_attribute_2
*sensor_attr
=
1276 to_sensor_dev_attr_2(attr
);
1277 int nr
= sensor_attr
->nr
;
1278 int index
= sensor_attr
->index
;
1280 return sprintf(buf
, "%u\n",
1281 (data
->sf4_reg
[index
][SF4_TEMP
][nr
]) * 1000);
1285 store_sf4_temp(struct device
*dev
, struct device_attribute
*attr
,
1286 const char *buf
, size_t count
)
1288 struct i2c_client
*client
= to_i2c_client(dev
);
1289 struct w83795_data
*data
= i2c_get_clientdata(client
);
1290 struct sensor_device_attribute_2
*sensor_attr
=
1291 to_sensor_dev_attr_2(attr
);
1292 int nr
= sensor_attr
->nr
;
1293 int index
= sensor_attr
->index
;
1296 if (strict_strtoul(buf
, 10, &val
) < 0)
1300 mutex_lock(&data
->update_lock
);
1301 w83795_write(client
, W83795_REG_SF4_TEMP(index
, nr
), val
);
1302 data
->sf4_reg
[index
][SF4_TEMP
][nr
] = val
;
1303 mutex_unlock(&data
->update_lock
);
1310 show_temp(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1312 struct sensor_device_attribute_2
*sensor_attr
=
1313 to_sensor_dev_attr_2(attr
);
1314 int nr
= sensor_attr
->nr
;
1315 int index
= sensor_attr
->index
;
1316 struct w83795_data
*data
= w83795_update_device(dev
);
1317 long temp
= temp_from_reg(data
->temp
[index
][nr
]);
1319 if (nr
== TEMP_READ
)
1320 temp
+= (data
->temp_read_vrlsb
[index
] >> 6) * 250;
1321 return sprintf(buf
, "%ld\n", temp
);
1325 store_temp(struct device
*dev
, struct device_attribute
*attr
,
1326 const char *buf
, size_t count
)
1328 struct sensor_device_attribute_2
*sensor_attr
=
1329 to_sensor_dev_attr_2(attr
);
1330 int nr
= sensor_attr
->nr
;
1331 int index
= sensor_attr
->index
;
1332 struct i2c_client
*client
= to_i2c_client(dev
);
1333 struct w83795_data
*data
= i2c_get_clientdata(client
);
1336 if (strict_strtol(buf
, 10, &tmp
) < 0)
1339 mutex_lock(&data
->update_lock
);
1340 data
->temp
[index
][nr
] = temp_to_reg(tmp
, -128, 127);
1341 w83795_write(client
, W83795_REG_TEMP
[index
][nr
], data
->temp
[index
][nr
]);
1342 mutex_unlock(&data
->update_lock
);
1348 show_dts_mode(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1350 struct w83795_data
*data
= dev_get_drvdata(dev
);
1353 if (data
->enable_dts
& 2)
1358 return sprintf(buf
, "%d\n", tmp
);
1362 show_dts(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1364 struct sensor_device_attribute_2
*sensor_attr
=
1365 to_sensor_dev_attr_2(attr
);
1366 int index
= sensor_attr
->index
;
1367 struct w83795_data
*data
= w83795_update_device(dev
);
1368 long temp
= temp_from_reg(data
->dts
[index
]);
1370 temp
+= (data
->dts_read_vrlsb
[index
] >> 6) * 250;
1371 return sprintf(buf
, "%ld\n", temp
);
1375 show_dts_ext(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1377 struct sensor_device_attribute_2
*sensor_attr
=
1378 to_sensor_dev_attr_2(attr
);
1379 int nr
= sensor_attr
->nr
;
1380 struct w83795_data
*data
= dev_get_drvdata(dev
);
1381 long temp
= temp_from_reg(data
->dts_ext
[nr
]);
1383 return sprintf(buf
, "%ld\n", temp
);
1387 store_dts_ext(struct device
*dev
, struct device_attribute
*attr
,
1388 const char *buf
, size_t count
)
1390 struct sensor_device_attribute_2
*sensor_attr
=
1391 to_sensor_dev_attr_2(attr
);
1392 int nr
= sensor_attr
->nr
;
1393 struct i2c_client
*client
= to_i2c_client(dev
);
1394 struct w83795_data
*data
= i2c_get_clientdata(client
);
1397 if (strict_strtol(buf
, 10, &tmp
) < 0)
1400 mutex_lock(&data
->update_lock
);
1401 data
->dts_ext
[nr
] = temp_to_reg(tmp
, -128, 127);
1402 w83795_write(client
, W83795_REG_DTS_EXT(nr
), data
->dts_ext
[nr
]);
1403 mutex_unlock(&data
->update_lock
);
1409 show_temp_mode(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1411 struct w83795_data
*data
= dev_get_drvdata(dev
);
1412 struct sensor_device_attribute_2
*sensor_attr
=
1413 to_sensor_dev_attr_2(attr
);
1414 int index
= sensor_attr
->index
;
1417 if (data
->temp_mode
& (1 << index
))
1418 tmp
= 3; /* Thermal diode */
1420 tmp
= 4; /* Thermistor */
1422 return sprintf(buf
, "%d\n", tmp
);
1425 /* Only for temp1-4 (temp5-6 can only be thermistor) */
1427 store_temp_mode(struct device
*dev
, struct device_attribute
*attr
,
1428 const char *buf
, size_t count
)
1430 struct i2c_client
*client
= to_i2c_client(dev
);
1431 struct w83795_data
*data
= i2c_get_clientdata(client
);
1432 struct sensor_device_attribute_2
*sensor_attr
=
1433 to_sensor_dev_attr_2(attr
);
1434 int index
= sensor_attr
->index
;
1439 if (strict_strtoul(buf
, 10, &val
) < 0)
1441 if ((val
!= 4) && (val
!= 3))
1444 mutex_lock(&data
->update_lock
);
1448 data
->temp_mode
|= 1 << index
;
1449 } else if (val
== 4) {
1452 data
->temp_mode
&= ~(1 << index
);
1455 reg_shift
= 2 * index
;
1456 tmp
= w83795_read(client
, W83795_REG_TEMP_CTRL2
);
1457 tmp
&= ~(0x03 << reg_shift
);
1458 tmp
|= val
<< reg_shift
;
1459 w83795_write(client
, W83795_REG_TEMP_CTRL2
, tmp
);
1461 mutex_unlock(&data
->update_lock
);
1466 /* show/store VIN */
1468 show_in(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1470 struct sensor_device_attribute_2
*sensor_attr
=
1471 to_sensor_dev_attr_2(attr
);
1472 int nr
= sensor_attr
->nr
;
1473 int index
= sensor_attr
->index
;
1474 struct w83795_data
*data
= w83795_update_device(dev
);
1475 u16 val
= data
->in
[index
][nr
];
1480 /* calculate this value again by sensors as sensors3.conf */
1481 if ((index
>= 17) &&
1482 !((data
->has_gain
>> (index
- 17)) & 1))
1487 lsb_idx
= IN_LSB_SHIFT_IDX
[index
][IN_LSB_IDX
];
1489 val
|= (data
->in_lsb
[lsb_idx
][nr
] >>
1490 IN_LSB_SHIFT_IDX
[index
][IN_LSB_SHIFT
]) & 0x03;
1491 if ((index
>= 17) &&
1492 !((data
->has_gain
>> (index
- 17)) & 1))
1496 val
= in_from_reg(index
, val
);
1498 return sprintf(buf
, "%d\n", val
);
1502 store_in(struct device
*dev
, struct device_attribute
*attr
,
1503 const char *buf
, size_t count
)
1505 struct sensor_device_attribute_2
*sensor_attr
=
1506 to_sensor_dev_attr_2(attr
);
1507 int nr
= sensor_attr
->nr
;
1508 int index
= sensor_attr
->index
;
1509 struct i2c_client
*client
= to_i2c_client(dev
);
1510 struct w83795_data
*data
= i2c_get_clientdata(client
);
1515 if (strict_strtoul(buf
, 10, &val
) < 0)
1517 val
= in_to_reg(index
, val
);
1519 if ((index
>= 17) &&
1520 !((data
->has_gain
>> (index
- 17)) & 1))
1522 val
= SENSORS_LIMIT(val
, 0, 0x3FF);
1523 mutex_lock(&data
->update_lock
);
1525 lsb_idx
= IN_LSB_SHIFT_IDX
[index
][IN_LSB_IDX
];
1526 tmp
= w83795_read(client
, IN_LSB_REG(lsb_idx
, nr
));
1527 tmp
&= ~(0x03 << IN_LSB_SHIFT_IDX
[index
][IN_LSB_SHIFT
]);
1528 tmp
|= (val
& 0x03) << IN_LSB_SHIFT_IDX
[index
][IN_LSB_SHIFT
];
1529 w83795_write(client
, IN_LSB_REG(lsb_idx
, nr
), tmp
);
1530 data
->in_lsb
[lsb_idx
][nr
] = tmp
;
1532 tmp
= (val
>> 2) & 0xff;
1533 w83795_write(client
, W83795_REG_IN
[index
][nr
], tmp
);
1534 data
->in
[index
][nr
] = tmp
;
1536 mutex_unlock(&data
->update_lock
);
1541 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1543 show_sf_setup(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1545 struct sensor_device_attribute_2
*sensor_attr
=
1546 to_sensor_dev_attr_2(attr
);
1547 int nr
= sensor_attr
->nr
;
1548 struct w83795_data
*data
= w83795_update_pwm_config(dev
);
1549 u16 val
= data
->setup_pwm
[nr
];
1552 case SETUP_PWM_UPTIME
:
1553 case SETUP_PWM_DOWNTIME
:
1554 val
= time_from_reg(val
);
1558 return sprintf(buf
, "%d\n", val
);
1562 store_sf_setup(struct device
*dev
, struct device_attribute
*attr
,
1563 const char *buf
, size_t count
)
1565 struct sensor_device_attribute_2
*sensor_attr
=
1566 to_sensor_dev_attr_2(attr
);
1567 int nr
= sensor_attr
->nr
;
1568 struct i2c_client
*client
= to_i2c_client(dev
);
1569 struct w83795_data
*data
= i2c_get_clientdata(client
);
1572 if (strict_strtoul(buf
, 10, &val
) < 0)
1576 case SETUP_PWM_DEFAULT
:
1577 val
= SENSORS_LIMIT(val
, 0, 0xff);
1579 case SETUP_PWM_UPTIME
:
1580 case SETUP_PWM_DOWNTIME
:
1581 val
= time_to_reg(val
);
1587 mutex_lock(&data
->update_lock
);
1588 data
->setup_pwm
[nr
] = val
;
1589 w83795_write(client
, W83795_REG_SETUP_PWM(nr
), val
);
1590 mutex_unlock(&data
->update_lock
);
1598 /* Don't change the attribute order, _max, _min and _beep are accessed by index
1599 * somewhere else in the code */
1600 #define SENSOR_ATTR_IN(index) { \
1601 SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \
1603 SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \
1604 store_in, IN_MAX, index), \
1605 SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \
1606 store_in, IN_LOW, index), \
1607 SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \
1608 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1609 SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \
1610 show_alarm_beep, store_beep, BEEP_ENABLE, \
1611 index + ((index > 14) ? 1 : 0)) }
1613 /* Don't change the attribute order, _beep is accessed by index
1614 * somewhere else in the code */
1615 #define SENSOR_ATTR_FAN(index) { \
1616 SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \
1617 NULL, FAN_INPUT, index - 1), \
1618 SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \
1619 show_fan, store_fan_min, FAN_MIN, index - 1), \
1620 SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \
1621 NULL, ALARM_STATUS, index + 31), \
1622 SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \
1623 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1625 #define SENSOR_ATTR_PWM(index) { \
1626 SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \
1627 store_pwm, PWM_OUTPUT, index - 1), \
1628 SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \
1629 show_pwm, store_pwm, PWM_NONSTOP, index - 1), \
1630 SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \
1631 show_pwm, store_pwm, PWM_START, index - 1), \
1632 SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \
1633 show_pwm, store_pwm, PWM_STOP_TIME, index - 1), \
1634 SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO, \
1635 show_pwm, store_pwm, PWM_FREQ, index - 1), \
1636 SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
1637 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1638 SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \
1639 show_pwm_mode, NULL, NOT_USED, index - 1), \
1640 SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1641 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1643 /* Don't change the attribute order, _beep is accessed by index
1644 * somewhere else in the code */
1645 #define SENSOR_ATTR_DTS(index) { \
1646 SENSOR_ATTR_2(temp##index##_type, S_IRUGO , \
1647 show_dts_mode, NULL, NOT_USED, index - 7), \
1648 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts, \
1649 NULL, NOT_USED, index - 7), \
1650 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1651 store_dts_ext, DTS_CRIT, NOT_USED), \
1652 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1653 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED), \
1654 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1655 store_dts_ext, DTS_WARN, NOT_USED), \
1656 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1657 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED), \
1658 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1659 show_alarm_beep, NULL, ALARM_STATUS, index + 17), \
1660 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1661 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1663 /* Don't change the attribute order, _beep is accessed by index
1664 * somewhere else in the code */
1665 #define SENSOR_ATTR_TEMP(index) { \
1666 SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \
1667 show_temp_mode, store_temp_mode, NOT_USED, index - 1), \
1668 SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \
1669 NULL, TEMP_READ, index - 1), \
1670 SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1671 store_temp, TEMP_CRIT, index - 1), \
1672 SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR, \
1673 show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \
1674 SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \
1675 store_temp, TEMP_WARN, index - 1), \
1676 SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \
1677 show_temp, store_temp, TEMP_WARN_HYST, index - 1), \
1678 SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \
1679 show_alarm_beep, NULL, ALARM_STATUS, \
1680 index + (index > 4 ? 11 : 17)), \
1681 SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \
1682 show_alarm_beep, store_beep, BEEP_ENABLE, \
1683 index + (index > 4 ? 11 : 17)), \
1684 SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \
1685 show_temp_pwm_enable, store_temp_pwm_enable, \
1686 TEMP_PWM_ENABLE, index - 1), \
1687 SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1688 show_temp_pwm_enable, store_temp_pwm_enable, \
1689 TEMP_PWM_FAN_MAP, index - 1), \
1690 SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO, \
1691 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1692 SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO, \
1693 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1694 SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO, \
1695 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1696 SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO, \
1697 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1698 SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1699 show_sf4_pwm, store_sf4_pwm, 0, index - 1), \
1700 SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1701 show_sf4_pwm, store_sf4_pwm, 1, index - 1), \
1702 SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1703 show_sf4_pwm, store_sf4_pwm, 2, index - 1), \
1704 SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1705 show_sf4_pwm, store_sf4_pwm, 3, index - 1), \
1706 SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1707 show_sf4_pwm, store_sf4_pwm, 4, index - 1), \
1708 SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1709 show_sf4_pwm, store_sf4_pwm, 5, index - 1), \
1710 SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1711 show_sf4_pwm, store_sf4_pwm, 6, index - 1), \
1712 SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1713 show_sf4_temp, store_sf4_temp, 0, index - 1), \
1714 SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1715 show_sf4_temp, store_sf4_temp, 1, index - 1), \
1716 SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1717 show_sf4_temp, store_sf4_temp, 2, index - 1), \
1718 SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1719 show_sf4_temp, store_sf4_temp, 3, index - 1), \
1720 SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1721 show_sf4_temp, store_sf4_temp, 4, index - 1), \
1722 SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1723 show_sf4_temp, store_sf4_temp, 5, index - 1), \
1724 SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1725 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1728 static struct sensor_device_attribute_2 w83795_in
[][5] = {
1752 static const struct sensor_device_attribute_2 w83795_fan
[][4] = {
1762 SENSOR_ATTR_FAN(10),
1763 SENSOR_ATTR_FAN(11),
1764 SENSOR_ATTR_FAN(12),
1765 SENSOR_ATTR_FAN(13),
1766 SENSOR_ATTR_FAN(14),
1769 static const struct sensor_device_attribute_2 w83795_temp
[][28] = {
1770 SENSOR_ATTR_TEMP(1),
1771 SENSOR_ATTR_TEMP(2),
1772 SENSOR_ATTR_TEMP(3),
1773 SENSOR_ATTR_TEMP(4),
1774 SENSOR_ATTR_TEMP(5),
1775 SENSOR_ATTR_TEMP(6),
1778 static const struct sensor_device_attribute_2 w83795_dts
[][8] = {
1782 SENSOR_ATTR_DTS(10),
1783 SENSOR_ATTR_DTS(11),
1784 SENSOR_ATTR_DTS(12),
1785 SENSOR_ATTR_DTS(13),
1786 SENSOR_ATTR_DTS(14),
1789 static const struct sensor_device_attribute_2 w83795_pwm
[][8] = {
1800 static const struct sensor_device_attribute_2 w83795_tss
[6] = {
1801 SENSOR_ATTR_2(temp1_source_sel
, S_IWUSR
| S_IRUGO
,
1802 show_temp_src
, store_temp_src
, NOT_USED
, 0),
1803 SENSOR_ATTR_2(temp2_source_sel
, S_IWUSR
| S_IRUGO
,
1804 show_temp_src
, store_temp_src
, NOT_USED
, 1),
1805 SENSOR_ATTR_2(temp3_source_sel
, S_IWUSR
| S_IRUGO
,
1806 show_temp_src
, store_temp_src
, NOT_USED
, 2),
1807 SENSOR_ATTR_2(temp4_source_sel
, S_IWUSR
| S_IRUGO
,
1808 show_temp_src
, store_temp_src
, NOT_USED
, 3),
1809 SENSOR_ATTR_2(temp5_source_sel
, S_IWUSR
| S_IRUGO
,
1810 show_temp_src
, store_temp_src
, NOT_USED
, 4),
1811 SENSOR_ATTR_2(temp6_source_sel
, S_IWUSR
| S_IRUGO
,
1812 show_temp_src
, store_temp_src
, NOT_USED
, 5),
1815 static const struct sensor_device_attribute_2 sda_single_files
[] = {
1816 SENSOR_ATTR_2(intrusion0_alarm
, S_IWUSR
| S_IRUGO
, show_alarm_beep
,
1817 store_chassis_clear
, ALARM_STATUS
, 46),
1818 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1819 SENSOR_ATTR_2(speed_cruise_tolerance
, S_IWUSR
| S_IRUGO
, show_fanin
,
1820 store_fanin
, FANIN_TOL
, NOT_USED
),
1821 SENSOR_ATTR_2(pwm_default
, S_IWUSR
| S_IRUGO
, show_sf_setup
,
1822 store_sf_setup
, SETUP_PWM_DEFAULT
, NOT_USED
),
1823 SENSOR_ATTR_2(pwm_uptime
, S_IWUSR
| S_IRUGO
, show_sf_setup
,
1824 store_sf_setup
, SETUP_PWM_UPTIME
, NOT_USED
),
1825 SENSOR_ATTR_2(pwm_downtime
, S_IWUSR
| S_IRUGO
, show_sf_setup
,
1826 store_sf_setup
, SETUP_PWM_DOWNTIME
, NOT_USED
),
1830 static const struct sensor_device_attribute_2 sda_beep_files
[] = {
1831 SENSOR_ATTR_2(intrusion0_beep
, S_IWUSR
| S_IRUGO
, show_alarm_beep
,
1832 store_beep
, BEEP_ENABLE
, 46),
1833 SENSOR_ATTR_2(beep_enable
, S_IWUSR
| S_IRUGO
, show_alarm_beep
,
1834 store_beep
, BEEP_ENABLE
, 47),
1841 static void w83795_init_client(struct i2c_client
*client
)
1843 struct w83795_data
*data
= i2c_get_clientdata(client
);
1844 static const u16 clkin
[4] = { /* in kHz */
1845 14318, 24000, 33333, 48000
1850 w83795_write(client
, W83795_REG_CONFIG
, 0x80);
1852 /* Start monitoring if needed */
1853 config
= w83795_read(client
, W83795_REG_CONFIG
);
1854 if (!(config
& W83795_REG_CONFIG_START
)) {
1855 dev_info(&client
->dev
, "Enabling monitoring operations\n");
1856 w83795_write(client
, W83795_REG_CONFIG
,
1857 config
| W83795_REG_CONFIG_START
);
1860 data
->clkin
= clkin
[(config
>> 3) & 0x3];
1861 dev_dbg(&client
->dev
, "clkin = %u kHz\n", data
->clkin
);
1864 static int w83795_get_device_id(struct i2c_client
*client
)
1868 device_id
= i2c_smbus_read_byte_data(client
, W83795_REG_DEVICEID
);
1870 /* Special case for rev. A chips; can't be checked first because later
1871 revisions emulate this for compatibility */
1872 if (device_id
< 0 || (device_id
& 0xf0) != 0x50) {
1875 alt_id
= i2c_smbus_read_byte_data(client
,
1876 W83795_REG_DEVICEID_A
);
1884 /* Return 0 if detection is successful, -ENODEV otherwise */
1885 static int w83795_detect(struct i2c_client
*client
,
1886 struct i2c_board_info
*info
)
1888 int bank
, vendor_id
, device_id
, expected
, i2c_addr
, config
;
1889 struct i2c_adapter
*adapter
= client
->adapter
;
1890 unsigned short address
= client
->addr
;
1891 const char *chip_name
;
1893 if (!i2c_check_functionality(adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
1895 bank
= i2c_smbus_read_byte_data(client
, W83795_REG_BANKSEL
);
1896 if (bank
< 0 || (bank
& 0x7c)) {
1897 dev_dbg(&adapter
->dev
,
1898 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1903 /* Check Nuvoton vendor ID */
1904 vendor_id
= i2c_smbus_read_byte_data(client
, W83795_REG_VENDORID
);
1905 expected
= bank
& 0x80 ? 0x5c : 0xa3;
1906 if (vendor_id
!= expected
) {
1907 dev_dbg(&adapter
->dev
,
1908 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1909 address
, "vendor id");
1913 /* Check device ID */
1914 device_id
= w83795_get_device_id(client
) |
1915 (i2c_smbus_read_byte_data(client
, W83795_REG_CHIPID
) << 8);
1916 if ((device_id
>> 4) != 0x795) {
1917 dev_dbg(&adapter
->dev
,
1918 "w83795: Detection failed at addr 0x%02hx, check %s\n",
1919 address
, "device id\n");
1923 /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1925 if ((bank
& 0x07) == 0) {
1926 i2c_addr
= i2c_smbus_read_byte_data(client
,
1927 W83795_REG_I2C_ADDR
);
1928 if ((i2c_addr
& 0x7f) != address
) {
1929 dev_dbg(&adapter
->dev
,
1930 "w83795: Detection failed at addr 0x%02hx, "
1931 "check %s\n", address
, "i2c addr");
1936 /* Check 795 chip type: 795G or 795ADG
1937 Usually we don't write to chips during detection, but here we don't
1938 quite have the choice; hopefully it's OK, we are about to return
1940 if ((bank
& 0x07) != 0)
1941 i2c_smbus_write_byte_data(client
, W83795_REG_BANKSEL
,
1943 config
= i2c_smbus_read_byte_data(client
, W83795_REG_CONFIG
);
1944 if (config
& W83795_REG_CONFIG_CONFIG48
)
1945 chip_name
= "w83795adg";
1947 chip_name
= "w83795g";
1949 strlcpy(info
->type
, chip_name
, I2C_NAME_SIZE
);
1950 dev_info(&adapter
->dev
, "Found %s rev. %c at 0x%02hx\n", chip_name
,
1951 'A' + (device_id
& 0xf), address
);
1956 static int w83795_handle_files(struct device
*dev
, int (*fn
)(struct device
*,
1957 const struct device_attribute
*))
1959 struct w83795_data
*data
= dev_get_drvdata(dev
);
1962 for (i
= 0; i
< ARRAY_SIZE(w83795_in
); i
++) {
1963 if (!(data
->has_in
& (1 << i
)))
1965 for (j
= 0; j
< ARRAY_SIZE(w83795_in
[0]); j
++) {
1966 if (j
== 4 && !data
->enable_beep
)
1968 err
= fn(dev
, &w83795_in
[i
][j
].dev_attr
);
1974 for (i
= 0; i
< ARRAY_SIZE(w83795_fan
); i
++) {
1975 if (!(data
->has_fan
& (1 << i
)))
1977 for (j
= 0; j
< ARRAY_SIZE(w83795_fan
[0]); j
++) {
1978 if (j
== 3 && !data
->enable_beep
)
1980 err
= fn(dev
, &w83795_fan
[i
][j
].dev_attr
);
1986 for (i
= 0; i
< ARRAY_SIZE(w83795_tss
); i
++) {
1987 j
= w83795_tss_useful(data
, i
);
1990 err
= fn(dev
, &w83795_tss
[i
].dev_attr
);
1995 for (i
= 0; i
< ARRAY_SIZE(sda_single_files
); i
++) {
1996 err
= fn(dev
, &sda_single_files
[i
].dev_attr
);
2001 if (data
->enable_beep
) {
2002 for (i
= 0; i
< ARRAY_SIZE(sda_beep_files
); i
++) {
2003 err
= fn(dev
, &sda_beep_files
[i
].dev_attr
);
2009 #ifdef CONFIG_SENSORS_W83795_FANCTRL
2010 for (i
= 0; i
< data
->has_pwm
; i
++) {
2011 for (j
= 0; j
< ARRAY_SIZE(w83795_pwm
[0]); j
++) {
2012 err
= fn(dev
, &w83795_pwm
[i
][j
].dev_attr
);
2019 for (i
= 0; i
< ARRAY_SIZE(w83795_temp
); i
++) {
2020 if (!(data
->has_temp
& (1 << i
)))
2022 #ifdef CONFIG_SENSORS_W83795_FANCTRL
2023 for (j
= 0; j
< ARRAY_SIZE(w83795_temp
[0]); j
++) {
2025 for (j
= 0; j
< 8; j
++) {
2027 if (j
== 7 && !data
->enable_beep
)
2029 err
= fn(dev
, &w83795_temp
[i
][j
].dev_attr
);
2035 if (data
->enable_dts
) {
2036 for (i
= 0; i
< ARRAY_SIZE(w83795_dts
); i
++) {
2037 if (!(data
->has_dts
& (1 << i
)))
2039 for (j
= 0; j
< ARRAY_SIZE(w83795_dts
[0]); j
++) {
2040 if (j
== 7 && !data
->enable_beep
)
2042 err
= fn(dev
, &w83795_dts
[i
][j
].dev_attr
);
2052 /* We need a wrapper that fits in w83795_handle_files */
2053 static int device_remove_file_wrapper(struct device
*dev
,
2054 const struct device_attribute
*attr
)
2056 device_remove_file(dev
, attr
);
2060 static void w83795_check_dynamic_in_limits(struct i2c_client
*client
)
2062 struct w83795_data
*data
= i2c_get_clientdata(client
);
2064 int i
, err_max
, err_min
;
2066 vid_ctl
= w83795_read(client
, W83795_REG_VID_CTRL
);
2068 /* Return immediately if VRM isn't configured */
2069 if ((vid_ctl
& 0x07) == 0x00 || (vid_ctl
& 0x07) == 0x07)
2072 data
->has_dyn_in
= (vid_ctl
>> 3) & 0x07;
2073 for (i
= 0; i
< 2; i
++) {
2074 if (!(data
->has_dyn_in
& (1 << i
)))
2077 /* Voltage limits in dynamic mode, switch to read-only */
2078 err_max
= sysfs_chmod_file(&client
->dev
.kobj
,
2079 &w83795_in
[i
][2].dev_attr
.attr
,
2081 err_min
= sysfs_chmod_file(&client
->dev
.kobj
,
2082 &w83795_in
[i
][3].dev_attr
.attr
,
2084 if (err_max
|| err_min
)
2085 dev_warn(&client
->dev
, "Failed to set in%d limits "
2086 "read-only (%d, %d)\n", i
, err_max
, err_min
);
2088 dev_info(&client
->dev
, "in%d limits set dynamically "
2093 /* Check pins that can be used for either temperature or voltage monitoring */
2094 static void w83795_apply_temp_config(struct w83795_data
*data
, u8 config
,
2095 int temp_chan
, int in_chan
)
2097 /* config is a 2-bit value */
2099 case 0x2: /* Voltage monitoring */
2100 data
->has_in
|= 1 << in_chan
;
2102 case 0x1: /* Thermal diode */
2105 data
->temp_mode
|= 1 << temp_chan
;
2107 case 0x3: /* Thermistor */
2108 data
->has_temp
|= 1 << temp_chan
;
2113 static int w83795_probe(struct i2c_client
*client
,
2114 const struct i2c_device_id
*id
)
2118 struct device
*dev
= &client
->dev
;
2119 struct w83795_data
*data
;
2122 data
= kzalloc(sizeof(struct w83795_data
), GFP_KERNEL
);
2128 i2c_set_clientdata(client
, data
);
2129 data
->chip_type
= id
->driver_data
;
2130 data
->bank
= i2c_smbus_read_byte_data(client
, W83795_REG_BANKSEL
);
2131 mutex_init(&data
->update_lock
);
2133 /* Initialize the chip */
2134 w83795_init_client(client
);
2136 /* Check which voltages and fans are present */
2137 data
->has_in
= w83795_read(client
, W83795_REG_VOLT_CTRL1
)
2138 | (w83795_read(client
, W83795_REG_VOLT_CTRL2
) << 8);
2139 data
->has_fan
= w83795_read(client
, W83795_REG_FANIN_CTRL1
)
2140 | (w83795_read(client
, W83795_REG_FANIN_CTRL2
) << 8);
2142 /* Check which analog temperatures and extra voltages are present */
2143 tmp
= w83795_read(client
, W83795_REG_TEMP_CTRL1
);
2145 data
->enable_dts
= 1;
2146 w83795_apply_temp_config(data
, (tmp
>> 2) & 0x3, 5, 16);
2147 w83795_apply_temp_config(data
, tmp
& 0x3, 4, 15);
2148 tmp
= w83795_read(client
, W83795_REG_TEMP_CTRL2
);
2149 w83795_apply_temp_config(data
, tmp
>> 6, 3, 20);
2150 w83795_apply_temp_config(data
, (tmp
>> 4) & 0x3, 2, 19);
2151 w83795_apply_temp_config(data
, (tmp
>> 2) & 0x3, 1, 18);
2152 w83795_apply_temp_config(data
, tmp
& 0x3, 0, 17);
2154 /* Check DTS enable status */
2155 if (data
->enable_dts
) {
2156 if (1 & w83795_read(client
, W83795_REG_DTSC
))
2157 data
->enable_dts
|= 2;
2158 data
->has_dts
= w83795_read(client
, W83795_REG_DTSE
);
2161 /* Report PECI Tbase values */
2162 if (data
->enable_dts
== 1) {
2163 for (i
= 0; i
< 8; i
++) {
2164 if (!(data
->has_dts
& (1 << i
)))
2166 tmp
= w83795_read(client
, W83795_REG_PECI_TBASE(i
));
2167 dev_info(&client
->dev
,
2168 "PECI agent %d Tbase temperature: %u\n",
2169 i
+ 1, (unsigned int)tmp
& 0x7f);
2173 data
->has_gain
= w83795_read(client
, W83795_REG_VMIGB_CTRL
) & 0x0f;
2175 /* pwm and smart fan */
2176 if (data
->chip_type
== w83795g
)
2181 /* Check if BEEP pin is available */
2182 if (data
->chip_type
== w83795g
) {
2183 /* The W83795G has a dedicated BEEP pin */
2184 data
->enable_beep
= 1;
2186 /* The W83795ADG has a shared pin for OVT# and BEEP, so you
2187 * can't have both */
2188 tmp
= w83795_read(client
, W83795_REG_OVT_CFG
);
2189 if ((tmp
& OVT_CFG_SEL
) == 0)
2190 data
->enable_beep
= 1;
2193 err
= w83795_handle_files(dev
, device_create_file
);
2197 if (data
->chip_type
== w83795g
)
2198 w83795_check_dynamic_in_limits(client
);
2200 data
->hwmon_dev
= hwmon_device_register(dev
);
2201 if (IS_ERR(data
->hwmon_dev
)) {
2202 err
= PTR_ERR(data
->hwmon_dev
);
2209 w83795_handle_files(dev
, device_remove_file_wrapper
);
2215 static int w83795_remove(struct i2c_client
*client
)
2217 struct w83795_data
*data
= i2c_get_clientdata(client
);
2219 hwmon_device_unregister(data
->hwmon_dev
);
2220 w83795_handle_files(&client
->dev
, device_remove_file_wrapper
);
2227 static const struct i2c_device_id w83795_id
[] = {
2228 { "w83795g", w83795g
},
2229 { "w83795adg", w83795adg
},
2232 MODULE_DEVICE_TABLE(i2c
, w83795_id
);
2234 static struct i2c_driver w83795_driver
= {
2238 .probe
= w83795_probe
,
2239 .remove
= w83795_remove
,
2240 .id_table
= w83795_id
,
2242 .class = I2C_CLASS_HWMON
,
2243 .detect
= w83795_detect
,
2244 .address_list
= normal_i2c
,
2247 static int __init
sensors_w83795_init(void)
2249 return i2c_add_driver(&w83795_driver
);
2252 static void __exit
sensors_w83795_exit(void)
2254 i2c_del_driver(&w83795_driver
);
2257 MODULE_AUTHOR("Wei Song, Jean Delvare <khali@linux-fr.org>");
2258 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2259 MODULE_LICENSE("GPL");
2261 module_init(sensors_w83795_init
);
2262 module_exit(sensors_w83795_exit
);