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1da177e4 LT |
1 | /* |
2 | asb100.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring | |
4 | ||
5 | Copyright (C) 2004 Mark M. Hoffman <mhoffman@lightlink.com> | |
6 | ||
7 | (derived from w83781d.c) | |
8 | ||
9 | Copyright (C) 1998 - 2003 Frodo Looijaard <frodol@dds.nl>, | |
10 | Philip Edelbrock <phil@netroedge.com>, and | |
11 | Mark Studebaker <mdsxyz123@yahoo.com> | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
27 | ||
28 | /* | |
29 | This driver supports the hardware sensor chips: Asus ASB100 and | |
30 | ASB100-A "BACH". | |
31 | ||
32 | ASB100-A supports pwm1, while plain ASB100 does not. There is no known | |
33 | way for the driver to tell which one is there. | |
34 | ||
35 | Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA | |
36 | asb100 7 3 1 4 0x31 0x0694 yes no | |
37 | */ | |
38 | ||
39 | #include <linux/module.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/i2c.h> | |
943b0830 | 42 | #include <linux/hwmon.h> |
fad33c5f | 43 | #include <linux/hwmon-sysfs.h> |
303760b4 | 44 | #include <linux/hwmon-vid.h> |
943b0830 | 45 | #include <linux/err.h> |
1da177e4 | 46 | #include <linux/init.h> |
ff324094 | 47 | #include <linux/jiffies.h> |
9a61bf63 | 48 | #include <linux/mutex.h> |
1da177e4 LT |
49 | #include "lm75.h" |
50 | ||
1da177e4 | 51 | /* I2C addresses to scan */ |
25e9c86d | 52 | static const unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; |
1da177e4 | 53 | |
1da177e4 | 54 | /* Insmod parameters */ |
f4b50261 | 55 | I2C_CLIENT_INSMOD_1(asb100); |
1da177e4 LT |
56 | I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: " |
57 | "{bus, clientaddr, subclientaddr1, subclientaddr2}"); | |
58 | ||
59 | /* Voltage IN registers 0-6 */ | |
60 | #define ASB100_REG_IN(nr) (0x20 + (nr)) | |
61 | #define ASB100_REG_IN_MAX(nr) (0x2b + (nr * 2)) | |
62 | #define ASB100_REG_IN_MIN(nr) (0x2c + (nr * 2)) | |
63 | ||
64 | /* FAN IN registers 1-3 */ | |
65 | #define ASB100_REG_FAN(nr) (0x28 + (nr)) | |
66 | #define ASB100_REG_FAN_MIN(nr) (0x3b + (nr)) | |
67 | ||
68 | /* TEMPERATURE registers 1-4 */ | |
69 | static const u16 asb100_reg_temp[] = {0, 0x27, 0x150, 0x250, 0x17}; | |
70 | static const u16 asb100_reg_temp_max[] = {0, 0x39, 0x155, 0x255, 0x18}; | |
71 | static const u16 asb100_reg_temp_hyst[] = {0, 0x3a, 0x153, 0x253, 0x19}; | |
72 | ||
73 | #define ASB100_REG_TEMP(nr) (asb100_reg_temp[nr]) | |
74 | #define ASB100_REG_TEMP_MAX(nr) (asb100_reg_temp_max[nr]) | |
75 | #define ASB100_REG_TEMP_HYST(nr) (asb100_reg_temp_hyst[nr]) | |
76 | ||
77 | #define ASB100_REG_TEMP2_CONFIG 0x0152 | |
78 | #define ASB100_REG_TEMP3_CONFIG 0x0252 | |
79 | ||
80 | ||
81 | #define ASB100_REG_CONFIG 0x40 | |
82 | #define ASB100_REG_ALARM1 0x41 | |
83 | #define ASB100_REG_ALARM2 0x42 | |
84 | #define ASB100_REG_SMIM1 0x43 | |
85 | #define ASB100_REG_SMIM2 0x44 | |
86 | #define ASB100_REG_VID_FANDIV 0x47 | |
87 | #define ASB100_REG_I2C_ADDR 0x48 | |
88 | #define ASB100_REG_CHIPID 0x49 | |
89 | #define ASB100_REG_I2C_SUBADDR 0x4a | |
90 | #define ASB100_REG_PIN 0x4b | |
91 | #define ASB100_REG_IRQ 0x4c | |
92 | #define ASB100_REG_BANK 0x4e | |
93 | #define ASB100_REG_CHIPMAN 0x4f | |
94 | ||
95 | #define ASB100_REG_WCHIPID 0x58 | |
96 | ||
97 | /* bit 7 -> enable, bits 0-3 -> duty cycle */ | |
98 | #define ASB100_REG_PWM1 0x59 | |
99 | ||
100 | /* CONVERSIONS | |
101 | Rounding and limit checking is only done on the TO_REG variants. */ | |
102 | ||
103 | /* These constants are a guess, consistent w/ w83781d */ | |
104 | #define ASB100_IN_MIN ( 0) | |
105 | #define ASB100_IN_MAX (4080) | |
106 | ||
107 | /* IN: 1/1000 V (0V to 4.08V) | |
108 | REG: 16mV/bit */ | |
109 | static u8 IN_TO_REG(unsigned val) | |
110 | { | |
111 | unsigned nval = SENSORS_LIMIT(val, ASB100_IN_MIN, ASB100_IN_MAX); | |
112 | return (nval + 8) / 16; | |
113 | } | |
114 | ||
115 | static unsigned IN_FROM_REG(u8 reg) | |
116 | { | |
117 | return reg * 16; | |
118 | } | |
119 | ||
120 | static u8 FAN_TO_REG(long rpm, int div) | |
121 | { | |
122 | if (rpm == -1) | |
123 | return 0; | |
124 | if (rpm == 0) | |
125 | return 255; | |
126 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
127 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); | |
128 | } | |
129 | ||
130 | static int FAN_FROM_REG(u8 val, int div) | |
131 | { | |
132 | return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); | |
133 | } | |
134 | ||
135 | /* These constants are a guess, consistent w/ w83781d */ | |
136 | #define ASB100_TEMP_MIN (-128000) | |
137 | #define ASB100_TEMP_MAX ( 127000) | |
138 | ||
139 | /* TEMP: 0.001C/bit (-128C to +127C) | |
140 | REG: 1C/bit, two's complement */ | |
5bfedac0 | 141 | static u8 TEMP_TO_REG(long temp) |
1da177e4 LT |
142 | { |
143 | int ntemp = SENSORS_LIMIT(temp, ASB100_TEMP_MIN, ASB100_TEMP_MAX); | |
144 | ntemp += (ntemp<0 ? -500 : 500); | |
145 | return (u8)(ntemp / 1000); | |
146 | } | |
147 | ||
148 | static int TEMP_FROM_REG(u8 reg) | |
149 | { | |
150 | return (s8)reg * 1000; | |
151 | } | |
152 | ||
153 | /* PWM: 0 - 255 per sensors documentation | |
154 | REG: (6.25% duty cycle per bit) */ | |
155 | static u8 ASB100_PWM_TO_REG(int pwm) | |
156 | { | |
157 | pwm = SENSORS_LIMIT(pwm, 0, 255); | |
158 | return (u8)(pwm / 16); | |
159 | } | |
160 | ||
161 | static int ASB100_PWM_FROM_REG(u8 reg) | |
162 | { | |
163 | return reg * 16; | |
164 | } | |
165 | ||
1da177e4 LT |
166 | #define DIV_FROM_REG(val) (1 << (val)) |
167 | ||
168 | /* FAN DIV: 1, 2, 4, or 8 (defaults to 2) | |
169 | REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ | |
170 | static u8 DIV_TO_REG(long val) | |
171 | { | |
172 | return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1; | |
173 | } | |
174 | ||
175 | /* For each registered client, we need to keep some data in memory. That | |
176 | data is pointed to by client->data. The structure itself is | |
177 | dynamically allocated, at the same time the client itself is allocated. */ | |
178 | struct asb100_data { | |
179 | struct i2c_client client; | |
1beeffe4 | 180 | struct device *hwmon_dev; |
9a61bf63 | 181 | struct mutex lock; |
1da177e4 LT |
182 | enum chips type; |
183 | ||
9a61bf63 | 184 | struct mutex update_lock; |
1da177e4 LT |
185 | unsigned long last_updated; /* In jiffies */ |
186 | ||
187 | /* array of 2 pointers to subclients */ | |
188 | struct i2c_client *lm75[2]; | |
189 | ||
190 | char valid; /* !=0 if following fields are valid */ | |
191 | u8 in[7]; /* Register value */ | |
192 | u8 in_max[7]; /* Register value */ | |
193 | u8 in_min[7]; /* Register value */ | |
194 | u8 fan[3]; /* Register value */ | |
195 | u8 fan_min[3]; /* Register value */ | |
196 | u16 temp[4]; /* Register value (0 and 3 are u8 only) */ | |
197 | u16 temp_max[4]; /* Register value (0 and 3 are u8 only) */ | |
198 | u16 temp_hyst[4]; /* Register value (0 and 3 are u8 only) */ | |
199 | u8 fan_div[3]; /* Register encoding, right justified */ | |
200 | u8 pwm; /* Register encoding */ | |
201 | u8 vid; /* Register encoding, combined */ | |
202 | u32 alarms; /* Register encoding, combined */ | |
203 | u8 vrm; | |
204 | }; | |
205 | ||
206 | static int asb100_read_value(struct i2c_client *client, u16 reg); | |
207 | static void asb100_write_value(struct i2c_client *client, u16 reg, u16 val); | |
208 | ||
209 | static int asb100_attach_adapter(struct i2c_adapter *adapter); | |
210 | static int asb100_detect(struct i2c_adapter *adapter, int address, int kind); | |
211 | static int asb100_detach_client(struct i2c_client *client); | |
212 | static struct asb100_data *asb100_update_device(struct device *dev); | |
213 | static void asb100_init_client(struct i2c_client *client); | |
214 | ||
215 | static struct i2c_driver asb100_driver = { | |
cdaf7934 | 216 | .driver = { |
cdaf7934 LR |
217 | .name = "asb100", |
218 | }, | |
1da177e4 LT |
219 | .attach_adapter = asb100_attach_adapter, |
220 | .detach_client = asb100_detach_client, | |
221 | }; | |
222 | ||
223 | /* 7 Voltages */ | |
224 | #define show_in_reg(reg) \ | |
fad33c5f JD |
225 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ |
226 | char *buf) \ | |
1da177e4 | 227 | { \ |
fad33c5f | 228 | int nr = to_sensor_dev_attr(attr)->index; \ |
1da177e4 LT |
229 | struct asb100_data *data = asb100_update_device(dev); \ |
230 | return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \ | |
231 | } | |
232 | ||
233 | show_in_reg(in) | |
234 | show_in_reg(in_min) | |
235 | show_in_reg(in_max) | |
236 | ||
237 | #define set_in_reg(REG, reg) \ | |
fad33c5f JD |
238 | static ssize_t set_in_##reg(struct device *dev, struct device_attribute *attr, \ |
239 | const char *buf, size_t count) \ | |
1da177e4 | 240 | { \ |
fad33c5f | 241 | int nr = to_sensor_dev_attr(attr)->index; \ |
1da177e4 LT |
242 | struct i2c_client *client = to_i2c_client(dev); \ |
243 | struct asb100_data *data = i2c_get_clientdata(client); \ | |
244 | unsigned long val = simple_strtoul(buf, NULL, 10); \ | |
245 | \ | |
9a61bf63 | 246 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
247 | data->in_##reg[nr] = IN_TO_REG(val); \ |
248 | asb100_write_value(client, ASB100_REG_IN_##REG(nr), \ | |
249 | data->in_##reg[nr]); \ | |
9a61bf63 | 250 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
251 | return count; \ |
252 | } | |
253 | ||
254 | set_in_reg(MIN, min) | |
255 | set_in_reg(MAX, max) | |
256 | ||
257 | #define sysfs_in(offset) \ | |
fad33c5f JD |
258 | static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
259 | show_in, NULL, offset); \ | |
260 | static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ | |
261 | show_in_min, set_in_min, offset); \ | |
262 | static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ | |
263 | show_in_max, set_in_max, offset) | |
1da177e4 LT |
264 | |
265 | sysfs_in(0); | |
266 | sysfs_in(1); | |
267 | sysfs_in(2); | |
268 | sysfs_in(3); | |
269 | sysfs_in(4); | |
270 | sysfs_in(5); | |
271 | sysfs_in(6); | |
272 | ||
1da177e4 | 273 | /* 3 Fans */ |
fad33c5f JD |
274 | static ssize_t show_fan(struct device *dev, struct device_attribute *attr, |
275 | char *buf) | |
1da177e4 | 276 | { |
fad33c5f | 277 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
278 | struct asb100_data *data = asb100_update_device(dev); |
279 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], | |
280 | DIV_FROM_REG(data->fan_div[nr]))); | |
281 | } | |
282 | ||
fad33c5f JD |
283 | static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, |
284 | char *buf) | |
1da177e4 | 285 | { |
fad33c5f | 286 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
287 | struct asb100_data *data = asb100_update_device(dev); |
288 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
289 | DIV_FROM_REG(data->fan_div[nr]))); | |
290 | } | |
291 | ||
fad33c5f JD |
292 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, |
293 | char *buf) | |
1da177e4 | 294 | { |
fad33c5f | 295 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
296 | struct asb100_data *data = asb100_update_device(dev); |
297 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
298 | } | |
299 | ||
fad33c5f JD |
300 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
301 | const char *buf, size_t count) | |
1da177e4 | 302 | { |
fad33c5f | 303 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
304 | struct i2c_client *client = to_i2c_client(dev); |
305 | struct asb100_data *data = i2c_get_clientdata(client); | |
306 | u32 val = simple_strtoul(buf, NULL, 10); | |
307 | ||
9a61bf63 | 308 | mutex_lock(&data->update_lock); |
1da177e4 LT |
309 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
310 | asb100_write_value(client, ASB100_REG_FAN_MIN(nr), data->fan_min[nr]); | |
9a61bf63 | 311 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
312 | return count; |
313 | } | |
314 | ||
315 | /* Note: we save and restore the fan minimum here, because its value is | |
316 | determined in part by the fan divisor. This follows the principle of | |
d6e05edc | 317 | least surprise; the user doesn't expect the fan minimum to change just |
1da177e4 | 318 | because the divisor changed. */ |
fad33c5f JD |
319 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
320 | const char *buf, size_t count) | |
1da177e4 | 321 | { |
fad33c5f | 322 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
323 | struct i2c_client *client = to_i2c_client(dev); |
324 | struct asb100_data *data = i2c_get_clientdata(client); | |
325 | unsigned long min; | |
326 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
327 | int reg; | |
af221931 | 328 | |
9a61bf63 | 329 | mutex_lock(&data->update_lock); |
1da177e4 LT |
330 | |
331 | min = FAN_FROM_REG(data->fan_min[nr], | |
332 | DIV_FROM_REG(data->fan_div[nr])); | |
333 | data->fan_div[nr] = DIV_TO_REG(val); | |
334 | ||
af221931 | 335 | switch (nr) { |
1da177e4 LT |
336 | case 0: /* fan 1 */ |
337 | reg = asb100_read_value(client, ASB100_REG_VID_FANDIV); | |
338 | reg = (reg & 0xcf) | (data->fan_div[0] << 4); | |
339 | asb100_write_value(client, ASB100_REG_VID_FANDIV, reg); | |
340 | break; | |
341 | ||
342 | case 1: /* fan 2 */ | |
343 | reg = asb100_read_value(client, ASB100_REG_VID_FANDIV); | |
344 | reg = (reg & 0x3f) | (data->fan_div[1] << 6); | |
345 | asb100_write_value(client, ASB100_REG_VID_FANDIV, reg); | |
346 | break; | |
347 | ||
348 | case 2: /* fan 3 */ | |
349 | reg = asb100_read_value(client, ASB100_REG_PIN); | |
350 | reg = (reg & 0x3f) | (data->fan_div[2] << 6); | |
351 | asb100_write_value(client, ASB100_REG_PIN, reg); | |
352 | break; | |
353 | } | |
354 | ||
355 | data->fan_min[nr] = | |
356 | FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); | |
357 | asb100_write_value(client, ASB100_REG_FAN_MIN(nr), data->fan_min[nr]); | |
358 | ||
9a61bf63 | 359 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
360 | |
361 | return count; | |
362 | } | |
363 | ||
364 | #define sysfs_fan(offset) \ | |
fad33c5f JD |
365 | static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
366 | show_fan, NULL, offset - 1); \ | |
367 | static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ | |
368 | show_fan_min, set_fan_min, offset - 1); \ | |
369 | static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ | |
370 | show_fan_div, set_fan_div, offset - 1) | |
1da177e4 LT |
371 | |
372 | sysfs_fan(1); | |
373 | sysfs_fan(2); | |
374 | sysfs_fan(3); | |
375 | ||
1da177e4 LT |
376 | /* 4 Temp. Sensors */ |
377 | static int sprintf_temp_from_reg(u16 reg, char *buf, int nr) | |
378 | { | |
379 | int ret = 0; | |
380 | ||
381 | switch (nr) { | |
382 | case 1: case 2: | |
383 | ret = sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(reg)); | |
384 | break; | |
385 | case 0: case 3: default: | |
386 | ret = sprintf(buf, "%d\n", TEMP_FROM_REG(reg)); | |
387 | break; | |
388 | } | |
389 | return ret; | |
390 | } | |
af221931 | 391 | |
1da177e4 | 392 | #define show_temp_reg(reg) \ |
fad33c5f JD |
393 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ |
394 | char *buf) \ | |
1da177e4 | 395 | { \ |
fad33c5f | 396 | int nr = to_sensor_dev_attr(attr)->index; \ |
1da177e4 LT |
397 | struct asb100_data *data = asb100_update_device(dev); \ |
398 | return sprintf_temp_from_reg(data->reg[nr], buf, nr); \ | |
399 | } | |
400 | ||
401 | show_temp_reg(temp); | |
402 | show_temp_reg(temp_max); | |
403 | show_temp_reg(temp_hyst); | |
404 | ||
405 | #define set_temp_reg(REG, reg) \ | |
fad33c5f JD |
406 | static ssize_t set_##reg(struct device *dev, struct device_attribute *attr, \ |
407 | const char *buf, size_t count) \ | |
1da177e4 | 408 | { \ |
fad33c5f | 409 | int nr = to_sensor_dev_attr(attr)->index; \ |
1da177e4 LT |
410 | struct i2c_client *client = to_i2c_client(dev); \ |
411 | struct asb100_data *data = i2c_get_clientdata(client); \ | |
5bfedac0 | 412 | long val = simple_strtol(buf, NULL, 10); \ |
1da177e4 | 413 | \ |
9a61bf63 | 414 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
415 | switch (nr) { \ |
416 | case 1: case 2: \ | |
417 | data->reg[nr] = LM75_TEMP_TO_REG(val); \ | |
418 | break; \ | |
419 | case 0: case 3: default: \ | |
420 | data->reg[nr] = TEMP_TO_REG(val); \ | |
421 | break; \ | |
422 | } \ | |
423 | asb100_write_value(client, ASB100_REG_TEMP_##REG(nr+1), \ | |
424 | data->reg[nr]); \ | |
9a61bf63 | 425 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
426 | return count; \ |
427 | } | |
428 | ||
429 | set_temp_reg(MAX, temp_max); | |
430 | set_temp_reg(HYST, temp_hyst); | |
431 | ||
432 | #define sysfs_temp(num) \ | |
fad33c5f JD |
433 | static SENSOR_DEVICE_ATTR(temp##num##_input, S_IRUGO, \ |
434 | show_temp, NULL, num - 1); \ | |
435 | static SENSOR_DEVICE_ATTR(temp##num##_max, S_IRUGO | S_IWUSR, \ | |
436 | show_temp_max, set_temp_max, num - 1); \ | |
437 | static SENSOR_DEVICE_ATTR(temp##num##_max_hyst, S_IRUGO | S_IWUSR, \ | |
438 | show_temp_hyst, set_temp_hyst, num - 1) | |
1da177e4 LT |
439 | |
440 | sysfs_temp(1); | |
441 | sysfs_temp(2); | |
442 | sysfs_temp(3); | |
443 | sysfs_temp(4); | |
444 | ||
445 | /* VID */ | |
af221931 JD |
446 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, |
447 | char *buf) | |
1da177e4 LT |
448 | { |
449 | struct asb100_data *data = asb100_update_device(dev); | |
450 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
451 | } | |
452 | ||
453 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); | |
1da177e4 LT |
454 | |
455 | /* VRM */ | |
af221931 JD |
456 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, |
457 | char *buf) | |
1da177e4 | 458 | { |
90d6619a | 459 | struct asb100_data *data = dev_get_drvdata(dev); |
1da177e4 LT |
460 | return sprintf(buf, "%d\n", data->vrm); |
461 | } | |
462 | ||
af221931 JD |
463 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, |
464 | const char *buf, size_t count) | |
1da177e4 | 465 | { |
8f74efe8 JD |
466 | struct asb100_data *data = dev_get_drvdata(dev); |
467 | data->vrm = simple_strtoul(buf, NULL, 10); | |
1da177e4 LT |
468 | return count; |
469 | } | |
470 | ||
471 | /* Alarms */ | |
472 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); | |
1da177e4 | 473 | |
af221931 JD |
474 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
475 | char *buf) | |
1da177e4 LT |
476 | { |
477 | struct asb100_data *data = asb100_update_device(dev); | |
68188ba7 | 478 | return sprintf(buf, "%u\n", data->alarms); |
1da177e4 LT |
479 | } |
480 | ||
481 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
1da177e4 | 482 | |
636866b9 JD |
483 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
484 | char *buf) | |
485 | { | |
486 | int bitnr = to_sensor_dev_attr(attr)->index; | |
487 | struct asb100_data *data = asb100_update_device(dev); | |
488 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
489 | } | |
490 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
491 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
492 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
493 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
494 | static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); | |
495 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); | |
496 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); | |
497 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11); | |
498 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
499 | static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); | |
500 | static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13); | |
501 | ||
1da177e4 | 502 | /* 1 PWM */ |
af221931 JD |
503 | static ssize_t show_pwm1(struct device *dev, struct device_attribute *attr, |
504 | char *buf) | |
1da177e4 LT |
505 | { |
506 | struct asb100_data *data = asb100_update_device(dev); | |
507 | return sprintf(buf, "%d\n", ASB100_PWM_FROM_REG(data->pwm & 0x0f)); | |
508 | } | |
509 | ||
af221931 JD |
510 | static ssize_t set_pwm1(struct device *dev, struct device_attribute *attr, |
511 | const char *buf, size_t count) | |
1da177e4 LT |
512 | { |
513 | struct i2c_client *client = to_i2c_client(dev); | |
514 | struct asb100_data *data = i2c_get_clientdata(client); | |
515 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
516 | ||
9a61bf63 | 517 | mutex_lock(&data->update_lock); |
1da177e4 LT |
518 | data->pwm &= 0x80; /* keep the enable bit */ |
519 | data->pwm |= (0x0f & ASB100_PWM_TO_REG(val)); | |
520 | asb100_write_value(client, ASB100_REG_PWM1, data->pwm); | |
9a61bf63 | 521 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
522 | return count; |
523 | } | |
524 | ||
af221931 JD |
525 | static ssize_t show_pwm_enable1(struct device *dev, |
526 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
527 | { |
528 | struct asb100_data *data = asb100_update_device(dev); | |
529 | return sprintf(buf, "%d\n", (data->pwm & 0x80) ? 1 : 0); | |
530 | } | |
531 | ||
af221931 JD |
532 | static ssize_t set_pwm_enable1(struct device *dev, |
533 | struct device_attribute *attr, const char *buf, size_t count) | |
1da177e4 LT |
534 | { |
535 | struct i2c_client *client = to_i2c_client(dev); | |
536 | struct asb100_data *data = i2c_get_clientdata(client); | |
537 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
538 | ||
9a61bf63 | 539 | mutex_lock(&data->update_lock); |
1da177e4 LT |
540 | data->pwm &= 0x0f; /* keep the duty cycle bits */ |
541 | data->pwm |= (val ? 0x80 : 0x00); | |
542 | asb100_write_value(client, ASB100_REG_PWM1, data->pwm); | |
9a61bf63 | 543 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
544 | return count; |
545 | } | |
546 | ||
547 | static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm1, set_pwm1); | |
548 | static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, | |
549 | show_pwm_enable1, set_pwm_enable1); | |
c1685f61 MH |
550 | |
551 | static struct attribute *asb100_attributes[] = { | |
fad33c5f JD |
552 | &sensor_dev_attr_in0_input.dev_attr.attr, |
553 | &sensor_dev_attr_in0_min.dev_attr.attr, | |
554 | &sensor_dev_attr_in0_max.dev_attr.attr, | |
555 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
556 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
557 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
558 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
559 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
560 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
561 | &sensor_dev_attr_in3_input.dev_attr.attr, | |
562 | &sensor_dev_attr_in3_min.dev_attr.attr, | |
563 | &sensor_dev_attr_in3_max.dev_attr.attr, | |
564 | &sensor_dev_attr_in4_input.dev_attr.attr, | |
565 | &sensor_dev_attr_in4_min.dev_attr.attr, | |
566 | &sensor_dev_attr_in4_max.dev_attr.attr, | |
567 | &sensor_dev_attr_in5_input.dev_attr.attr, | |
568 | &sensor_dev_attr_in5_min.dev_attr.attr, | |
569 | &sensor_dev_attr_in5_max.dev_attr.attr, | |
570 | &sensor_dev_attr_in6_input.dev_attr.attr, | |
571 | &sensor_dev_attr_in6_min.dev_attr.attr, | |
572 | &sensor_dev_attr_in6_max.dev_attr.attr, | |
573 | ||
574 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
575 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
576 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
577 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
578 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
579 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
580 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
581 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
582 | &sensor_dev_attr_fan3_div.dev_attr.attr, | |
583 | ||
584 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
585 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
586 | &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, | |
587 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
588 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
589 | &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, | |
590 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
591 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
592 | &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, | |
593 | &sensor_dev_attr_temp4_input.dev_attr.attr, | |
594 | &sensor_dev_attr_temp4_max.dev_attr.attr, | |
595 | &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, | |
c1685f61 | 596 | |
636866b9 JD |
597 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
598 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
599 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
600 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
601 | &sensor_dev_attr_in4_alarm.dev_attr.attr, | |
602 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
603 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
604 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
605 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
606 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
607 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
608 | ||
c1685f61 MH |
609 | &dev_attr_cpu0_vid.attr, |
610 | &dev_attr_vrm.attr, | |
611 | &dev_attr_alarms.attr, | |
612 | &dev_attr_pwm1.attr, | |
613 | &dev_attr_pwm1_enable.attr, | |
614 | ||
615 | NULL | |
616 | }; | |
617 | ||
618 | static const struct attribute_group asb100_group = { | |
619 | .attrs = asb100_attributes, | |
620 | }; | |
1da177e4 LT |
621 | |
622 | /* This function is called when: | |
623 | asb100_driver is inserted (when this module is loaded), for each | |
624 | available adapter | |
625 | when a new adapter is inserted (and asb100_driver is still present) | |
626 | */ | |
627 | static int asb100_attach_adapter(struct i2c_adapter *adapter) | |
628 | { | |
629 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
630 | return 0; | |
2ed2dc3c | 631 | return i2c_probe(adapter, &addr_data, asb100_detect); |
1da177e4 LT |
632 | } |
633 | ||
634 | static int asb100_detect_subclients(struct i2c_adapter *adapter, int address, | |
af221931 | 635 | int kind, struct i2c_client *client) |
1da177e4 LT |
636 | { |
637 | int i, id, err; | |
af221931 | 638 | struct asb100_data *data = i2c_get_clientdata(client); |
1da177e4 | 639 | |
ba9c2e8d | 640 | data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
1da177e4 LT |
641 | if (!(data->lm75[0])) { |
642 | err = -ENOMEM; | |
643 | goto ERROR_SC_0; | |
644 | } | |
1da177e4 | 645 | |
ba9c2e8d | 646 | data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
1da177e4 LT |
647 | if (!(data->lm75[1])) { |
648 | err = -ENOMEM; | |
649 | goto ERROR_SC_1; | |
650 | } | |
1da177e4 LT |
651 | |
652 | id = i2c_adapter_id(adapter); | |
653 | ||
654 | if (force_subclients[0] == id && force_subclients[1] == address) { | |
655 | for (i = 2; i <= 3; i++) { | |
656 | if (force_subclients[i] < 0x48 || | |
657 | force_subclients[i] > 0x4f) { | |
af221931 | 658 | dev_err(&client->dev, "invalid subclient " |
1da177e4 LT |
659 | "address %d; must be 0x48-0x4f\n", |
660 | force_subclients[i]); | |
661 | err = -ENODEV; | |
662 | goto ERROR_SC_2; | |
663 | } | |
664 | } | |
af221931 | 665 | asb100_write_value(client, ASB100_REG_I2C_SUBADDR, |
1da177e4 | 666 | (force_subclients[2] & 0x07) | |
af221931 | 667 | ((force_subclients[3] & 0x07) << 4)); |
1da177e4 LT |
668 | data->lm75[0]->addr = force_subclients[2]; |
669 | data->lm75[1]->addr = force_subclients[3]; | |
670 | } else { | |
af221931 | 671 | int val = asb100_read_value(client, ASB100_REG_I2C_SUBADDR); |
1da177e4 LT |
672 | data->lm75[0]->addr = 0x48 + (val & 0x07); |
673 | data->lm75[1]->addr = 0x48 + ((val >> 4) & 0x07); | |
674 | } | |
675 | ||
af221931 JD |
676 | if (data->lm75[0]->addr == data->lm75[1]->addr) { |
677 | dev_err(&client->dev, "duplicate addresses 0x%x " | |
1da177e4 LT |
678 | "for subclients\n", data->lm75[0]->addr); |
679 | err = -ENODEV; | |
680 | goto ERROR_SC_2; | |
681 | } | |
682 | ||
683 | for (i = 0; i <= 1; i++) { | |
684 | i2c_set_clientdata(data->lm75[i], NULL); | |
685 | data->lm75[i]->adapter = adapter; | |
686 | data->lm75[i]->driver = &asb100_driver; | |
1da177e4 LT |
687 | strlcpy(data->lm75[i]->name, "asb100 subclient", I2C_NAME_SIZE); |
688 | } | |
689 | ||
690 | if ((err = i2c_attach_client(data->lm75[0]))) { | |
af221931 | 691 | dev_err(&client->dev, "subclient %d registration " |
1da177e4 LT |
692 | "at address 0x%x failed.\n", i, data->lm75[0]->addr); |
693 | goto ERROR_SC_2; | |
694 | } | |
695 | ||
696 | if ((err = i2c_attach_client(data->lm75[1]))) { | |
af221931 | 697 | dev_err(&client->dev, "subclient %d registration " |
1da177e4 LT |
698 | "at address 0x%x failed.\n", i, data->lm75[1]->addr); |
699 | goto ERROR_SC_3; | |
700 | } | |
701 | ||
702 | return 0; | |
703 | ||
704 | /* Undo inits in case of errors */ | |
705 | ERROR_SC_3: | |
706 | i2c_detach_client(data->lm75[0]); | |
707 | ERROR_SC_2: | |
708 | kfree(data->lm75[1]); | |
709 | ERROR_SC_1: | |
710 | kfree(data->lm75[0]); | |
711 | ERROR_SC_0: | |
712 | return err; | |
713 | } | |
714 | ||
715 | static int asb100_detect(struct i2c_adapter *adapter, int address, int kind) | |
716 | { | |
717 | int err; | |
af221931 | 718 | struct i2c_client *client; |
1da177e4 LT |
719 | struct asb100_data *data; |
720 | ||
1da177e4 LT |
721 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { |
722 | pr_debug("asb100.o: detect failed, " | |
723 | "smbus byte data not supported!\n"); | |
724 | err = -ENODEV; | |
725 | goto ERROR0; | |
726 | } | |
727 | ||
728 | /* OK. For now, we presume we have a valid client. We now create the | |
729 | client structure, even though we cannot fill it completely yet. | |
730 | But it allows us to access asb100_{read,write}_value. */ | |
731 | ||
ba9c2e8d DS |
732 | if (!(data = kzalloc(sizeof(struct asb100_data), GFP_KERNEL))) { |
733 | pr_debug("asb100.o: detect failed, kzalloc failed!\n"); | |
1da177e4 LT |
734 | err = -ENOMEM; |
735 | goto ERROR0; | |
736 | } | |
1da177e4 | 737 | |
af221931 | 738 | client = &data->client; |
9a61bf63 | 739 | mutex_init(&data->lock); |
af221931 JD |
740 | i2c_set_clientdata(client, data); |
741 | client->addr = address; | |
742 | client->adapter = adapter; | |
743 | client->driver = &asb100_driver; | |
1da177e4 LT |
744 | |
745 | /* Now, we do the remaining detection. */ | |
746 | ||
747 | /* The chip may be stuck in some other bank than bank 0. This may | |
748 | make reading other information impossible. Specify a force=... or | |
749 | force_*=... parameter, and the chip will be reset to the right | |
750 | bank. */ | |
751 | if (kind < 0) { | |
752 | ||
af221931 JD |
753 | int val1 = asb100_read_value(client, ASB100_REG_BANK); |
754 | int val2 = asb100_read_value(client, ASB100_REG_CHIPMAN); | |
1da177e4 LT |
755 | |
756 | /* If we're in bank 0 */ | |
af221931 | 757 | if ((!(val1 & 0x07)) && |
1da177e4 | 758 | /* Check for ASB100 ID (low byte) */ |
af221931 | 759 | (((!(val1 & 0x80)) && (val2 != 0x94)) || |
1da177e4 | 760 | /* Check for ASB100 ID (high byte ) */ |
af221931 | 761 | ((val1 & 0x80) && (val2 != 0x06)))) { |
1da177e4 LT |
762 | pr_debug("asb100.o: detect failed, " |
763 | "bad chip id 0x%02x!\n", val2); | |
764 | err = -ENODEV; | |
765 | goto ERROR1; | |
766 | } | |
767 | ||
768 | } /* kind < 0 */ | |
769 | ||
770 | /* We have either had a force parameter, or we have already detected | |
771 | Winbond. Put it now into bank 0 and Vendor ID High Byte */ | |
af221931 JD |
772 | asb100_write_value(client, ASB100_REG_BANK, |
773 | (asb100_read_value(client, ASB100_REG_BANK) & 0x78) | 0x80); | |
1da177e4 LT |
774 | |
775 | /* Determine the chip type. */ | |
776 | if (kind <= 0) { | |
af221931 JD |
777 | int val1 = asb100_read_value(client, ASB100_REG_WCHIPID); |
778 | int val2 = asb100_read_value(client, ASB100_REG_CHIPMAN); | |
1da177e4 LT |
779 | |
780 | if ((val1 == 0x31) && (val2 == 0x06)) | |
781 | kind = asb100; | |
782 | else { | |
783 | if (kind == 0) | |
af221931 | 784 | dev_warn(&client->dev, "ignoring " |
1da177e4 LT |
785 | "'force' parameter for unknown chip " |
786 | "at adapter %d, address 0x%02x.\n", | |
787 | i2c_adapter_id(adapter), address); | |
788 | err = -ENODEV; | |
789 | goto ERROR1; | |
790 | } | |
791 | } | |
792 | ||
793 | /* Fill in remaining client fields and put it into the global list */ | |
af221931 | 794 | strlcpy(client->name, "asb100", I2C_NAME_SIZE); |
1da177e4 | 795 | data->type = kind; |
9a61bf63 | 796 | mutex_init(&data->update_lock); |
1da177e4 LT |
797 | |
798 | /* Tell the I2C layer a new client has arrived */ | |
af221931 | 799 | if ((err = i2c_attach_client(client))) |
1da177e4 LT |
800 | goto ERROR1; |
801 | ||
802 | /* Attach secondary lm75 clients */ | |
803 | if ((err = asb100_detect_subclients(adapter, address, kind, | |
af221931 | 804 | client))) |
1da177e4 LT |
805 | goto ERROR2; |
806 | ||
807 | /* Initialize the chip */ | |
af221931 | 808 | asb100_init_client(client); |
1da177e4 LT |
809 | |
810 | /* A few vars need to be filled upon startup */ | |
af221931 JD |
811 | data->fan_min[0] = asb100_read_value(client, ASB100_REG_FAN_MIN(0)); |
812 | data->fan_min[1] = asb100_read_value(client, ASB100_REG_FAN_MIN(1)); | |
813 | data->fan_min[2] = asb100_read_value(client, ASB100_REG_FAN_MIN(2)); | |
1da177e4 LT |
814 | |
815 | /* Register sysfs hooks */ | |
af221931 | 816 | if ((err = sysfs_create_group(&client->dev.kobj, &asb100_group))) |
c1685f61 MH |
817 | goto ERROR3; |
818 | ||
af221931 | 819 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
820 | if (IS_ERR(data->hwmon_dev)) { |
821 | err = PTR_ERR(data->hwmon_dev); | |
c1685f61 | 822 | goto ERROR4; |
943b0830 MH |
823 | } |
824 | ||
1da177e4 LT |
825 | return 0; |
826 | ||
c1685f61 | 827 | ERROR4: |
af221931 | 828 | sysfs_remove_group(&client->dev.kobj, &asb100_group); |
943b0830 MH |
829 | ERROR3: |
830 | i2c_detach_client(data->lm75[1]); | |
831 | i2c_detach_client(data->lm75[0]); | |
832 | kfree(data->lm75[1]); | |
833 | kfree(data->lm75[0]); | |
1da177e4 | 834 | ERROR2: |
af221931 | 835 | i2c_detach_client(client); |
1da177e4 LT |
836 | ERROR1: |
837 | kfree(data); | |
838 | ERROR0: | |
839 | return err; | |
840 | } | |
841 | ||
842 | static int asb100_detach_client(struct i2c_client *client) | |
843 | { | |
943b0830 | 844 | struct asb100_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
845 | int err; |
846 | ||
943b0830 | 847 | /* main client */ |
c1685f61 | 848 | if (data) { |
1beeffe4 | 849 | hwmon_device_unregister(data->hwmon_dev); |
c1685f61 MH |
850 | sysfs_remove_group(&client->dev.kobj, &asb100_group); |
851 | } | |
943b0830 | 852 | |
7bef5594 | 853 | if ((err = i2c_detach_client(client))) |
1da177e4 | 854 | return err; |
1da177e4 | 855 | |
943b0830 MH |
856 | /* main client */ |
857 | if (data) | |
858 | kfree(data); | |
859 | ||
860 | /* subclient */ | |
861 | else | |
1da177e4 | 862 | kfree(client); |
1da177e4 LT |
863 | |
864 | return 0; | |
865 | } | |
866 | ||
867 | /* The SMBus locks itself, usually, but nothing may access the chip between | |
868 | bank switches. */ | |
869 | static int asb100_read_value(struct i2c_client *client, u16 reg) | |
870 | { | |
871 | struct asb100_data *data = i2c_get_clientdata(client); | |
872 | struct i2c_client *cl; | |
873 | int res, bank; | |
874 | ||
9a61bf63 | 875 | mutex_lock(&data->lock); |
1da177e4 LT |
876 | |
877 | bank = (reg >> 8) & 0x0f; | |
878 | if (bank > 2) | |
879 | /* switch banks */ | |
880 | i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); | |
881 | ||
882 | if (bank == 0 || bank > 2) { | |
883 | res = i2c_smbus_read_byte_data(client, reg & 0xff); | |
884 | } else { | |
885 | /* switch to subclient */ | |
886 | cl = data->lm75[bank - 1]; | |
887 | ||
888 | /* convert from ISA to LM75 I2C addresses */ | |
889 | switch (reg & 0xff) { | |
890 | case 0x50: /* TEMP */ | |
af221931 | 891 | res = swab16(i2c_smbus_read_word_data(cl, 0)); |
1da177e4 LT |
892 | break; |
893 | case 0x52: /* CONFIG */ | |
894 | res = i2c_smbus_read_byte_data(cl, 1); | |
895 | break; | |
896 | case 0x53: /* HYST */ | |
af221931 | 897 | res = swab16(i2c_smbus_read_word_data(cl, 2)); |
1da177e4 LT |
898 | break; |
899 | case 0x55: /* MAX */ | |
900 | default: | |
af221931 | 901 | res = swab16(i2c_smbus_read_word_data(cl, 3)); |
1da177e4 LT |
902 | break; |
903 | } | |
904 | } | |
905 | ||
906 | if (bank > 2) | |
907 | i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); | |
908 | ||
9a61bf63 | 909 | mutex_unlock(&data->lock); |
1da177e4 LT |
910 | |
911 | return res; | |
912 | } | |
913 | ||
914 | static void asb100_write_value(struct i2c_client *client, u16 reg, u16 value) | |
915 | { | |
916 | struct asb100_data *data = i2c_get_clientdata(client); | |
917 | struct i2c_client *cl; | |
918 | int bank; | |
919 | ||
9a61bf63 | 920 | mutex_lock(&data->lock); |
1da177e4 LT |
921 | |
922 | bank = (reg >> 8) & 0x0f; | |
923 | if (bank > 2) | |
924 | /* switch banks */ | |
925 | i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); | |
926 | ||
927 | if (bank == 0 || bank > 2) { | |
928 | i2c_smbus_write_byte_data(client, reg & 0xff, value & 0xff); | |
929 | } else { | |
930 | /* switch to subclient */ | |
931 | cl = data->lm75[bank - 1]; | |
932 | ||
933 | /* convert from ISA to LM75 I2C addresses */ | |
934 | switch (reg & 0xff) { | |
935 | case 0x52: /* CONFIG */ | |
936 | i2c_smbus_write_byte_data(cl, 1, value & 0xff); | |
937 | break; | |
938 | case 0x53: /* HYST */ | |
939 | i2c_smbus_write_word_data(cl, 2, swab16(value)); | |
940 | break; | |
941 | case 0x55: /* MAX */ | |
942 | i2c_smbus_write_word_data(cl, 3, swab16(value)); | |
943 | break; | |
944 | } | |
945 | } | |
946 | ||
947 | if (bank > 2) | |
948 | i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); | |
949 | ||
9a61bf63 | 950 | mutex_unlock(&data->lock); |
1da177e4 LT |
951 | } |
952 | ||
953 | static void asb100_init_client(struct i2c_client *client) | |
954 | { | |
955 | struct asb100_data *data = i2c_get_clientdata(client); | |
1da177e4 | 956 | |
303760b4 | 957 | data->vrm = vid_which_vrm(); |
1da177e4 LT |
958 | |
959 | /* Start monitoring */ | |
af221931 | 960 | asb100_write_value(client, ASB100_REG_CONFIG, |
1da177e4 LT |
961 | (asb100_read_value(client, ASB100_REG_CONFIG) & 0xf7) | 0x01); |
962 | } | |
963 | ||
964 | static struct asb100_data *asb100_update_device(struct device *dev) | |
965 | { | |
966 | struct i2c_client *client = to_i2c_client(dev); | |
967 | struct asb100_data *data = i2c_get_clientdata(client); | |
968 | int i; | |
969 | ||
9a61bf63 | 970 | mutex_lock(&data->update_lock); |
1da177e4 LT |
971 | |
972 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
973 | || !data->valid) { | |
974 | ||
975 | dev_dbg(&client->dev, "starting device update...\n"); | |
976 | ||
977 | /* 7 voltage inputs */ | |
978 | for (i = 0; i < 7; i++) { | |
979 | data->in[i] = asb100_read_value(client, | |
980 | ASB100_REG_IN(i)); | |
981 | data->in_min[i] = asb100_read_value(client, | |
982 | ASB100_REG_IN_MIN(i)); | |
983 | data->in_max[i] = asb100_read_value(client, | |
984 | ASB100_REG_IN_MAX(i)); | |
985 | } | |
986 | ||
987 | /* 3 fan inputs */ | |
988 | for (i = 0; i < 3; i++) { | |
989 | data->fan[i] = asb100_read_value(client, | |
990 | ASB100_REG_FAN(i)); | |
991 | data->fan_min[i] = asb100_read_value(client, | |
992 | ASB100_REG_FAN_MIN(i)); | |
993 | } | |
994 | ||
995 | /* 4 temperature inputs */ | |
996 | for (i = 1; i <= 4; i++) { | |
997 | data->temp[i-1] = asb100_read_value(client, | |
998 | ASB100_REG_TEMP(i)); | |
999 | data->temp_max[i-1] = asb100_read_value(client, | |
1000 | ASB100_REG_TEMP_MAX(i)); | |
1001 | data->temp_hyst[i-1] = asb100_read_value(client, | |
1002 | ASB100_REG_TEMP_HYST(i)); | |
1003 | } | |
1004 | ||
1005 | /* VID and fan divisors */ | |
1006 | i = asb100_read_value(client, ASB100_REG_VID_FANDIV); | |
1007 | data->vid = i & 0x0f; | |
1008 | data->vid |= (asb100_read_value(client, | |
1009 | ASB100_REG_CHIPID) & 0x01) << 4; | |
1010 | data->fan_div[0] = (i >> 4) & 0x03; | |
1011 | data->fan_div[1] = (i >> 6) & 0x03; | |
1012 | data->fan_div[2] = (asb100_read_value(client, | |
1013 | ASB100_REG_PIN) >> 6) & 0x03; | |
1014 | ||
1015 | /* PWM */ | |
1016 | data->pwm = asb100_read_value(client, ASB100_REG_PWM1); | |
1017 | ||
1018 | /* alarms */ | |
1019 | data->alarms = asb100_read_value(client, ASB100_REG_ALARM1) + | |
1020 | (asb100_read_value(client, ASB100_REG_ALARM2) << 8); | |
1021 | ||
1022 | data->last_updated = jiffies; | |
1023 | data->valid = 1; | |
1024 | ||
1025 | dev_dbg(&client->dev, "... device update complete\n"); | |
1026 | } | |
1027 | ||
9a61bf63 | 1028 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
1029 | |
1030 | return data; | |
1031 | } | |
1032 | ||
1033 | static int __init asb100_init(void) | |
1034 | { | |
1035 | return i2c_add_driver(&asb100_driver); | |
1036 | } | |
1037 | ||
1038 | static void __exit asb100_exit(void) | |
1039 | { | |
1040 | i2c_del_driver(&asb100_driver); | |
1041 | } | |
1042 | ||
1043 | MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>"); | |
1044 | MODULE_DESCRIPTION("ASB100 Bach driver"); | |
1045 | MODULE_LICENSE("GPL"); | |
1046 | ||
1047 | module_init(asb100_init); | |
1048 | module_exit(asb100_exit); |