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9873964d CS |
1 | /* |
2 | w83791d.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | monitoring | |
4 | ||
5 | Copyright (C) 2006 Charles Spirakis <bezaur@gmail.com> | |
6 | ||
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; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | /* | |
23 | Supports following chips: | |
24 | ||
25 | Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA | |
26 | w83791d 10 5 3 3 0x71 0x5ca3 yes no | |
27 | ||
28 | The w83791d chip appears to be part way between the 83781d and the | |
29 | 83792d. Thus, this file is derived from both the w83792d.c and | |
125751cb CS |
30 | w83781d.c files. |
31 | ||
32 | The w83791g chip is the same as the w83791d but lead-free. | |
9873964d CS |
33 | */ |
34 | ||
9873964d CS |
35 | #include <linux/module.h> |
36 | #include <linux/init.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/i2c.h> | |
39 | #include <linux/hwmon.h> | |
40 | #include <linux/hwmon-vid.h> | |
41 | #include <linux/hwmon-sysfs.h> | |
42 | #include <linux/err.h> | |
43 | #include <linux/mutex.h> | |
44 | ||
45 | #define NUMBER_OF_VIN 10 | |
46 | #define NUMBER_OF_FANIN 5 | |
47 | #define NUMBER_OF_TEMPIN 3 | |
48 | ||
49 | /* Addresses to scan */ | |
50 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; | |
51 | ||
52 | /* Insmod parameters */ | |
53 | I2C_CLIENT_INSMOD_1(w83791d); | |
54 | I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: " | |
55 | "{bus, clientaddr, subclientaddr1, subclientaddr2}"); | |
56 | ||
57 | static int reset; | |
58 | module_param(reset, bool, 0); | |
59 | MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset"); | |
60 | ||
61 | static int init; | |
62 | module_param(init, bool, 0); | |
63 | MODULE_PARM_DESC(init, "Set to one to force extra software initialization"); | |
64 | ||
65 | /* The W83791D registers */ | |
66 | static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = { | |
67 | 0x20, /* VCOREA in DataSheet */ | |
68 | 0x21, /* VINR0 in DataSheet */ | |
69 | 0x22, /* +3.3VIN in DataSheet */ | |
70 | 0x23, /* VDD5V in DataSheet */ | |
71 | 0x24, /* +12VIN in DataSheet */ | |
72 | 0x25, /* -12VIN in DataSheet */ | |
73 | 0x26, /* -5VIN in DataSheet */ | |
74 | 0xB0, /* 5VSB in DataSheet */ | |
75 | 0xB1, /* VBAT in DataSheet */ | |
76 | 0xB2 /* VINR1 in DataSheet */ | |
77 | }; | |
78 | ||
79 | static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = { | |
80 | 0x2B, /* VCOREA High Limit in DataSheet */ | |
81 | 0x2D, /* VINR0 High Limit in DataSheet */ | |
82 | 0x2F, /* +3.3VIN High Limit in DataSheet */ | |
83 | 0x31, /* VDD5V High Limit in DataSheet */ | |
84 | 0x33, /* +12VIN High Limit in DataSheet */ | |
85 | 0x35, /* -12VIN High Limit in DataSheet */ | |
86 | 0x37, /* -5VIN High Limit in DataSheet */ | |
87 | 0xB4, /* 5VSB High Limit in DataSheet */ | |
88 | 0xB6, /* VBAT High Limit in DataSheet */ | |
89 | 0xB8 /* VINR1 High Limit in DataSheet */ | |
90 | }; | |
91 | static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = { | |
92 | 0x2C, /* VCOREA Low Limit in DataSheet */ | |
93 | 0x2E, /* VINR0 Low Limit in DataSheet */ | |
94 | 0x30, /* +3.3VIN Low Limit in DataSheet */ | |
95 | 0x32, /* VDD5V Low Limit in DataSheet */ | |
96 | 0x34, /* +12VIN Low Limit in DataSheet */ | |
97 | 0x36, /* -12VIN Low Limit in DataSheet */ | |
98 | 0x38, /* -5VIN Low Limit in DataSheet */ | |
99 | 0xB5, /* 5VSB Low Limit in DataSheet */ | |
100 | 0xB7, /* VBAT Low Limit in DataSheet */ | |
101 | 0xB9 /* VINR1 Low Limit in DataSheet */ | |
102 | }; | |
103 | static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = { | |
104 | 0x28, /* FAN 1 Count in DataSheet */ | |
105 | 0x29, /* FAN 2 Count in DataSheet */ | |
106 | 0x2A, /* FAN 3 Count in DataSheet */ | |
107 | 0xBA, /* FAN 4 Count in DataSheet */ | |
108 | 0xBB, /* FAN 5 Count in DataSheet */ | |
109 | }; | |
110 | static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = { | |
111 | 0x3B, /* FAN 1 Count Low Limit in DataSheet */ | |
112 | 0x3C, /* FAN 2 Count Low Limit in DataSheet */ | |
113 | 0x3D, /* FAN 3 Count Low Limit in DataSheet */ | |
114 | 0xBC, /* FAN 4 Count Low Limit in DataSheet */ | |
115 | 0xBD, /* FAN 5 Count Low Limit in DataSheet */ | |
116 | }; | |
117 | ||
118 | static const u8 W83791D_REG_FAN_CFG[2] = { | |
119 | 0x84, /* FAN 1/2 configuration */ | |
120 | 0x95, /* FAN 3 configuration */ | |
121 | }; | |
122 | ||
123 | static const u8 W83791D_REG_FAN_DIV[3] = { | |
124 | 0x47, /* contains FAN1 and FAN2 Divisor */ | |
125 | 0x4b, /* contains FAN3 Divisor */ | |
126 | 0x5C, /* contains FAN4 and FAN5 Divisor */ | |
127 | }; | |
128 | ||
129 | #define W83791D_REG_BANK 0x4E | |
130 | #define W83791D_REG_TEMP2_CONFIG 0xC2 | |
131 | #define W83791D_REG_TEMP3_CONFIG 0xCA | |
132 | ||
133 | static const u8 W83791D_REG_TEMP1[3] = { | |
134 | 0x27, /* TEMP 1 in DataSheet */ | |
135 | 0x39, /* TEMP 1 Over in DataSheet */ | |
136 | 0x3A, /* TEMP 1 Hyst in DataSheet */ | |
137 | }; | |
138 | ||
139 | static const u8 W83791D_REG_TEMP_ADD[2][6] = { | |
140 | {0xC0, /* TEMP 2 in DataSheet */ | |
141 | 0xC1, /* TEMP 2(0.5 deg) in DataSheet */ | |
142 | 0xC5, /* TEMP 2 Over High part in DataSheet */ | |
143 | 0xC6, /* TEMP 2 Over Low part in DataSheet */ | |
144 | 0xC3, /* TEMP 2 Thyst High part in DataSheet */ | |
145 | 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */ | |
146 | {0xC8, /* TEMP 3 in DataSheet */ | |
147 | 0xC9, /* TEMP 3(0.5 deg) in DataSheet */ | |
148 | 0xCD, /* TEMP 3 Over High part in DataSheet */ | |
149 | 0xCE, /* TEMP 3 Over Low part in DataSheet */ | |
150 | 0xCB, /* TEMP 3 Thyst High part in DataSheet */ | |
151 | 0xCC} /* TEMP 3 Thyst Low part in DataSheet */ | |
152 | }; | |
153 | ||
154 | #define W83791D_REG_BEEP_CONFIG 0x4D | |
155 | ||
156 | static const u8 W83791D_REG_BEEP_CTRL[3] = { | |
157 | 0x56, /* BEEP Control Register 1 */ | |
158 | 0x57, /* BEEP Control Register 2 */ | |
159 | 0xA3, /* BEEP Control Register 3 */ | |
160 | }; | |
161 | ||
162 | #define W83791D_REG_CONFIG 0x40 | |
163 | #define W83791D_REG_VID_FANDIV 0x47 | |
164 | #define W83791D_REG_DID_VID4 0x49 | |
165 | #define W83791D_REG_WCHIPID 0x58 | |
166 | #define W83791D_REG_CHIPMAN 0x4F | |
167 | #define W83791D_REG_PIN 0x4B | |
168 | #define W83791D_REG_I2C_SUBADDR 0x4A | |
169 | ||
170 | #define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */ | |
171 | #define W83791D_REG_ALARM2 0xAA /* realtime status register2 */ | |
172 | #define W83791D_REG_ALARM3 0xAB /* realtime status register3 */ | |
173 | ||
174 | #define W83791D_REG_VBAT 0x5D | |
175 | #define W83791D_REG_I2C_ADDR 0x48 | |
176 | ||
177 | /* The SMBus locks itself. The Winbond W83791D has a bank select register | |
178 | (index 0x4e), but the driver only accesses registers in bank 0. Since | |
179 | we don't switch banks, we don't need any special code to handle | |
180 | locking access between bank switches */ | |
181 | static inline int w83791d_read(struct i2c_client *client, u8 reg) | |
182 | { | |
183 | return i2c_smbus_read_byte_data(client, reg); | |
184 | } | |
185 | ||
186 | static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value) | |
187 | { | |
188 | return i2c_smbus_write_byte_data(client, reg, value); | |
189 | } | |
190 | ||
191 | /* The analog voltage inputs have 16mV LSB. Since the sysfs output is | |
192 | in mV as would be measured on the chip input pin, need to just | |
193 | multiply/divide by 16 to translate from/to register values. */ | |
194 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8) / 16), 0, 255)) | |
195 | #define IN_FROM_REG(val) ((val) * 16) | |
196 | ||
197 | static u8 fan_to_reg(long rpm, int div) | |
198 | { | |
199 | if (rpm == 0) | |
200 | return 255; | |
201 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
202 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); | |
203 | } | |
204 | ||
205 | #define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \ | |
206 | ((val) == 255 ? 0 : \ | |
207 | 1350000 / ((val) * (div)))) | |
208 | ||
209 | /* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */ | |
210 | #define TEMP1_FROM_REG(val) ((val) * 1000) | |
211 | #define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \ | |
212 | (val) >= 127000 ? 127 : \ | |
213 | (val) < 0 ? ((val) - 500) / 1000 : \ | |
214 | ((val) + 500) / 1000) | |
215 | ||
216 | /* for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius | |
217 | Assumes the top 8 bits are the integral amount and the bottom 8 bits | |
218 | are the fractional amount. Since we only have 0.5 degree resolution, | |
219 | the bottom 7 bits will always be zero */ | |
220 | #define TEMP23_FROM_REG(val) ((val) / 128 * 500) | |
221 | #define TEMP23_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ | |
222 | (val) >= 127500 ? 0x7F80 : \ | |
223 | (val) < 0 ? ((val) - 250) / 500 * 128 : \ | |
224 | ((val) + 250) / 500 * 128) | |
225 | ||
226 | ||
227 | #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff) | |
228 | #define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff) | |
229 | ||
230 | #define DIV_FROM_REG(val) (1 << (val)) | |
231 | ||
232 | static u8 div_to_reg(int nr, long val) | |
233 | { | |
234 | int i; | |
235 | int max; | |
236 | ||
237 | /* first three fan's divisor max out at 8, rest max out at 128 */ | |
238 | max = (nr < 3) ? 8 : 128; | |
239 | val = SENSORS_LIMIT(val, 1, max) >> 1; | |
240 | for (i = 0; i < 7; i++) { | |
241 | if (val == 0) | |
242 | break; | |
243 | val >>= 1; | |
244 | } | |
245 | return (u8) i; | |
246 | } | |
247 | ||
248 | struct w83791d_data { | |
249 | struct i2c_client client; | |
250 | struct class_device *class_dev; | |
251 | struct mutex update_lock; | |
252 | ||
253 | char valid; /* !=0 if following fields are valid */ | |
254 | unsigned long last_updated; /* In jiffies */ | |
255 | ||
256 | /* array of 2 pointers to subclients */ | |
257 | struct i2c_client *lm75[2]; | |
258 | ||
259 | /* volts */ | |
260 | u8 in[NUMBER_OF_VIN]; /* Register value */ | |
261 | u8 in_max[NUMBER_OF_VIN]; /* Register value */ | |
262 | u8 in_min[NUMBER_OF_VIN]; /* Register value */ | |
263 | ||
264 | /* fans */ | |
265 | u8 fan[NUMBER_OF_FANIN]; /* Register value */ | |
266 | u8 fan_min[NUMBER_OF_FANIN]; /* Register value */ | |
267 | u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */ | |
268 | ||
269 | /* Temperature sensors */ | |
270 | ||
271 | s8 temp1[3]; /* current, over, thyst */ | |
272 | s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the | |
273 | integral part, bottom 8 bits are the | |
274 | fractional part. We only use the top | |
275 | 9 bits as the resolution is only | |
276 | to the 0.5 degree C... | |
277 | two sensors with three values | |
278 | (cur, over, hyst) */ | |
279 | ||
280 | /* Misc */ | |
281 | u32 alarms; /* realtime status register encoding,combined */ | |
282 | u8 beep_enable; /* Global beep enable */ | |
283 | u32 beep_mask; /* Mask off specific beeps */ | |
284 | u8 vid; /* Register encoding, combined */ | |
285 | u8 vrm; /* hwmon-vid */ | |
286 | }; | |
287 | ||
288 | static int w83791d_attach_adapter(struct i2c_adapter *adapter); | |
289 | static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind); | |
290 | static int w83791d_detach_client(struct i2c_client *client); | |
291 | ||
292 | static int w83791d_read(struct i2c_client *client, u8 register); | |
293 | static int w83791d_write(struct i2c_client *client, u8 register, u8 value); | |
294 | static struct w83791d_data *w83791d_update_device(struct device *dev); | |
295 | ||
296 | #ifdef DEBUG | |
297 | static void w83791d_print_debug(struct w83791d_data *data, struct device *dev); | |
298 | #endif | |
299 | ||
300 | static void w83791d_init_client(struct i2c_client *client); | |
301 | ||
302 | static struct i2c_driver w83791d_driver = { | |
303 | .driver = { | |
304 | .name = "w83791d", | |
305 | }, | |
306 | .attach_adapter = w83791d_attach_adapter, | |
307 | .detach_client = w83791d_detach_client, | |
308 | }; | |
309 | ||
310 | /* following are the sysfs callback functions */ | |
311 | #define show_in_reg(reg) \ | |
312 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ | |
313 | char *buf) \ | |
314 | { \ | |
315 | struct sensor_device_attribute *sensor_attr = \ | |
316 | to_sensor_dev_attr(attr); \ | |
317 | struct w83791d_data *data = w83791d_update_device(dev); \ | |
318 | int nr = sensor_attr->index; \ | |
319 | return sprintf(buf,"%d\n", IN_FROM_REG(data->reg[nr])); \ | |
320 | } | |
321 | ||
322 | show_in_reg(in); | |
323 | show_in_reg(in_min); | |
324 | show_in_reg(in_max); | |
325 | ||
326 | #define store_in_reg(REG, reg) \ | |
327 | static ssize_t store_in_##reg(struct device *dev, \ | |
328 | struct device_attribute *attr, \ | |
329 | const char *buf, size_t count) \ | |
330 | { \ | |
331 | struct sensor_device_attribute *sensor_attr = \ | |
332 | to_sensor_dev_attr(attr); \ | |
333 | struct i2c_client *client = to_i2c_client(dev); \ | |
334 | struct w83791d_data *data = i2c_get_clientdata(client); \ | |
335 | unsigned long val = simple_strtoul(buf, NULL, 10); \ | |
336 | int nr = sensor_attr->index; \ | |
337 | \ | |
338 | mutex_lock(&data->update_lock); \ | |
339 | data->in_##reg[nr] = IN_TO_REG(val); \ | |
340 | w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \ | |
341 | mutex_unlock(&data->update_lock); \ | |
342 | \ | |
343 | return count; \ | |
344 | } | |
345 | store_in_reg(MIN, min); | |
346 | store_in_reg(MAX, max); | |
347 | ||
348 | static struct sensor_device_attribute sda_in_input[] = { | |
349 | SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0), | |
350 | SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), | |
351 | SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), | |
352 | SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), | |
353 | SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), | |
354 | SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), | |
355 | SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), | |
356 | SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), | |
357 | SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), | |
358 | SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9), | |
359 | }; | |
360 | ||
361 | static struct sensor_device_attribute sda_in_min[] = { | |
362 | SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0), | |
363 | SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1), | |
364 | SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2), | |
365 | SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3), | |
366 | SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4), | |
367 | SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5), | |
368 | SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6), | |
369 | SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7), | |
370 | SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8), | |
371 | SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9), | |
372 | }; | |
373 | ||
374 | static struct sensor_device_attribute sda_in_max[] = { | |
375 | SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0), | |
376 | SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1), | |
377 | SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2), | |
378 | SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3), | |
379 | SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4), | |
380 | SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5), | |
381 | SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6), | |
382 | SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7), | |
383 | SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8), | |
384 | SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9), | |
385 | }; | |
386 | ||
387 | #define show_fan_reg(reg) \ | |
388 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ | |
389 | char *buf) \ | |
390 | { \ | |
391 | struct sensor_device_attribute *sensor_attr = \ | |
392 | to_sensor_dev_attr(attr); \ | |
393 | struct w83791d_data *data = w83791d_update_device(dev); \ | |
394 | int nr = sensor_attr->index; \ | |
395 | return sprintf(buf,"%d\n", \ | |
396 | FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \ | |
397 | } | |
398 | ||
399 | show_fan_reg(fan); | |
400 | show_fan_reg(fan_min); | |
401 | ||
402 | static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr, | |
403 | const char *buf, size_t count) | |
404 | { | |
405 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
406 | struct i2c_client *client = to_i2c_client(dev); | |
407 | struct w83791d_data *data = i2c_get_clientdata(client); | |
408 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
409 | int nr = sensor_attr->index; | |
410 | ||
411 | mutex_lock(&data->update_lock); | |
412 | data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr])); | |
413 | w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]); | |
414 | mutex_unlock(&data->update_lock); | |
415 | ||
416 | return count; | |
417 | } | |
418 | ||
419 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, | |
420 | char *buf) | |
421 | { | |
422 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
423 | int nr = sensor_attr->index; | |
424 | struct w83791d_data *data = w83791d_update_device(dev); | |
425 | return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr])); | |
426 | } | |
427 | ||
428 | /* Note: we save and restore the fan minimum here, because its value is | |
429 | determined in part by the fan divisor. This follows the principle of | |
430 | least suprise; the user doesn't expect the fan minimum to change just | |
431 | because the divisor changed. */ | |
432 | static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr, | |
433 | const char *buf, size_t count) | |
434 | { | |
435 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
436 | struct i2c_client *client = to_i2c_client(dev); | |
437 | struct w83791d_data *data = i2c_get_clientdata(client); | |
438 | int nr = sensor_attr->index; | |
439 | unsigned long min; | |
440 | u8 tmp_fan_div; | |
441 | u8 fan_div_reg; | |
442 | int indx = 0; | |
443 | u8 keep_mask = 0; | |
444 | u8 new_shift = 0; | |
445 | ||
446 | /* Save fan_min */ | |
447 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
448 | ||
449 | mutex_lock(&data->update_lock); | |
450 | data->fan_div[nr] = div_to_reg(nr, simple_strtoul(buf, NULL, 10)); | |
451 | ||
452 | switch (nr) { | |
453 | case 0: | |
454 | indx = 0; | |
455 | keep_mask = 0xcf; | |
456 | new_shift = 4; | |
457 | break; | |
458 | case 1: | |
459 | indx = 0; | |
460 | keep_mask = 0x3f; | |
461 | new_shift = 6; | |
462 | break; | |
463 | case 2: | |
464 | indx = 1; | |
465 | keep_mask = 0x3f; | |
466 | new_shift = 6; | |
467 | break; | |
468 | case 3: | |
469 | indx = 2; | |
470 | keep_mask = 0xf8; | |
471 | new_shift = 0; | |
472 | break; | |
473 | case 4: | |
474 | indx = 2; | |
475 | keep_mask = 0x8f; | |
476 | new_shift = 4; | |
477 | break; | |
478 | #ifdef DEBUG | |
479 | default: | |
480 | dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr); | |
481 | count = -EINVAL; | |
482 | goto err_exit; | |
483 | #endif | |
484 | } | |
485 | ||
486 | fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx]) | |
487 | & keep_mask; | |
488 | tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask; | |
489 | ||
490 | w83791d_write(client, W83791D_REG_FAN_DIV[indx], | |
491 | fan_div_reg | tmp_fan_div); | |
492 | ||
493 | /* Restore fan_min */ | |
494 | data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr])); | |
495 | w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]); | |
496 | ||
497 | #ifdef DEBUG | |
498 | err_exit: | |
499 | #endif | |
500 | mutex_unlock(&data->update_lock); | |
501 | ||
502 | return count; | |
503 | } | |
504 | ||
505 | static struct sensor_device_attribute sda_fan_input[] = { | |
506 | SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), | |
507 | SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), | |
508 | SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), | |
509 | SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), | |
510 | SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), | |
511 | }; | |
512 | ||
513 | static struct sensor_device_attribute sda_fan_min[] = { | |
514 | SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, | |
515 | show_fan_min, store_fan_min, 0), | |
516 | SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, | |
517 | show_fan_min, store_fan_min, 1), | |
518 | SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, | |
519 | show_fan_min, store_fan_min, 2), | |
520 | SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, | |
521 | show_fan_min, store_fan_min, 3), | |
522 | SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, | |
523 | show_fan_min, store_fan_min, 4), | |
524 | }; | |
525 | ||
526 | static struct sensor_device_attribute sda_fan_div[] = { | |
527 | SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO, | |
528 | show_fan_div, store_fan_div, 0), | |
529 | SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO, | |
530 | show_fan_div, store_fan_div, 1), | |
531 | SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO, | |
532 | show_fan_div, store_fan_div, 2), | |
533 | SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO, | |
534 | show_fan_div, store_fan_div, 3), | |
535 | SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO, | |
536 | show_fan_div, store_fan_div, 4), | |
537 | }; | |
538 | ||
539 | /* read/write the temperature1, includes measured value and limits */ | |
540 | static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr, | |
541 | char *buf) | |
542 | { | |
543 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
544 | struct w83791d_data *data = w83791d_update_device(dev); | |
545 | return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index])); | |
546 | } | |
547 | ||
548 | static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr, | |
549 | const char *buf, size_t count) | |
550 | { | |
551 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
552 | struct i2c_client *client = to_i2c_client(dev); | |
553 | struct w83791d_data *data = i2c_get_clientdata(client); | |
554 | long val = simple_strtol(buf, NULL, 10); | |
555 | int nr = attr->index; | |
556 | ||
557 | mutex_lock(&data->update_lock); | |
558 | data->temp1[nr] = TEMP1_TO_REG(val); | |
559 | w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]); | |
560 | mutex_unlock(&data->update_lock); | |
561 | return count; | |
562 | } | |
563 | ||
564 | /* read/write temperature2-3, includes measured value and limits */ | |
565 | static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr, | |
566 | char *buf) | |
567 | { | |
568 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
569 | struct w83791d_data *data = w83791d_update_device(dev); | |
570 | int nr = attr->nr; | |
571 | int index = attr->index; | |
572 | return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index])); | |
573 | } | |
574 | ||
575 | static ssize_t store_temp23(struct device *dev, | |
576 | struct device_attribute *devattr, | |
577 | const char *buf, size_t count) | |
578 | { | |
579 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
580 | struct i2c_client *client = to_i2c_client(dev); | |
581 | struct w83791d_data *data = i2c_get_clientdata(client); | |
582 | long val = simple_strtol(buf, NULL, 10); | |
583 | int nr = attr->nr; | |
584 | int index = attr->index; | |
585 | ||
586 | mutex_lock(&data->update_lock); | |
587 | data->temp_add[nr][index] = TEMP23_TO_REG(val); | |
588 | w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2], | |
589 | data->temp_add[nr][index] >> 8); | |
590 | w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1], | |
591 | data->temp_add[nr][index] & 0x80); | |
592 | mutex_unlock(&data->update_lock); | |
593 | ||
594 | return count; | |
595 | } | |
596 | ||
597 | static struct sensor_device_attribute_2 sda_temp_input[] = { | |
598 | SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0), | |
599 | SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0), | |
600 | SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0), | |
601 | }; | |
602 | ||
603 | static struct sensor_device_attribute_2 sda_temp_max[] = { | |
604 | SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, | |
605 | show_temp1, store_temp1, 0, 1), | |
606 | SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, | |
607 | show_temp23, store_temp23, 0, 1), | |
608 | SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, | |
609 | show_temp23, store_temp23, 1, 1), | |
610 | }; | |
611 | ||
612 | static struct sensor_device_attribute_2 sda_temp_max_hyst[] = { | |
613 | SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR, | |
614 | show_temp1, store_temp1, 0, 2), | |
615 | SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR, | |
616 | show_temp23, store_temp23, 0, 2), | |
617 | SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR, | |
618 | show_temp23, store_temp23, 1, 2), | |
619 | }; | |
620 | ||
621 | ||
622 | /* get reatime status of all sensors items: voltage, temp, fan */ | |
623 | static ssize_t show_alarms_reg(struct device *dev, | |
624 | struct device_attribute *attr, char *buf) | |
625 | { | |
626 | struct w83791d_data *data = w83791d_update_device(dev); | |
627 | return sprintf(buf, "%u\n", data->alarms); | |
628 | } | |
629 | ||
630 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); | |
631 | ||
632 | /* Beep control */ | |
633 | ||
634 | #define GLOBAL_BEEP_ENABLE_SHIFT 15 | |
635 | #define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT) | |
636 | ||
637 | static ssize_t show_beep_enable(struct device *dev, | |
638 | struct device_attribute *attr, char *buf) | |
639 | { | |
640 | struct w83791d_data *data = w83791d_update_device(dev); | |
641 | return sprintf(buf, "%d\n", data->beep_enable); | |
642 | } | |
643 | ||
644 | static ssize_t show_beep_mask(struct device *dev, | |
645 | struct device_attribute *attr, char *buf) | |
646 | { | |
647 | struct w83791d_data *data = w83791d_update_device(dev); | |
648 | return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask)); | |
649 | } | |
650 | ||
651 | ||
652 | static ssize_t store_beep_mask(struct device *dev, | |
653 | struct device_attribute *attr, | |
654 | const char *buf, size_t count) | |
655 | { | |
656 | struct i2c_client *client = to_i2c_client(dev); | |
657 | struct w83791d_data *data = i2c_get_clientdata(client); | |
658 | long val = simple_strtol(buf, NULL, 10); | |
659 | int i; | |
660 | ||
661 | mutex_lock(&data->update_lock); | |
662 | ||
663 | /* The beep_enable state overrides any enabling request from | |
664 | the masks */ | |
665 | data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK; | |
666 | data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT); | |
667 | ||
668 | val = data->beep_mask; | |
669 | ||
670 | for (i = 0; i < 3; i++) { | |
671 | w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff)); | |
672 | val >>= 8; | |
673 | } | |
674 | ||
675 | mutex_unlock(&data->update_lock); | |
676 | ||
677 | return count; | |
678 | } | |
679 | ||
680 | static ssize_t store_beep_enable(struct device *dev, | |
681 | struct device_attribute *attr, | |
682 | const char *buf, size_t count) | |
683 | { | |
684 | struct i2c_client *client = to_i2c_client(dev); | |
685 | struct w83791d_data *data = i2c_get_clientdata(client); | |
686 | long val = simple_strtol(buf, NULL, 10); | |
687 | ||
688 | mutex_lock(&data->update_lock); | |
689 | ||
690 | data->beep_enable = val ? 1 : 0; | |
691 | ||
692 | /* Keep the full mask value in sync with the current enable */ | |
693 | data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK; | |
694 | data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT); | |
695 | ||
696 | /* The global control is in the second beep control register | |
697 | so only need to update that register */ | |
698 | val = (data->beep_mask >> 8) & 0xff; | |
699 | ||
700 | w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val); | |
701 | ||
702 | mutex_unlock(&data->update_lock); | |
703 | ||
704 | return count; | |
705 | } | |
706 | ||
707 | static struct sensor_device_attribute sda_beep_ctrl[] = { | |
708 | SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR, | |
709 | show_beep_enable, store_beep_enable, 0), | |
710 | SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR, | |
711 | show_beep_mask, store_beep_mask, 1) | |
712 | }; | |
713 | ||
714 | /* cpu voltage regulation information */ | |
715 | static ssize_t show_vid_reg(struct device *dev, | |
716 | struct device_attribute *attr, char *buf) | |
717 | { | |
718 | struct w83791d_data *data = w83791d_update_device(dev); | |
719 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
720 | } | |
721 | ||
722 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
723 | ||
724 | static ssize_t show_vrm_reg(struct device *dev, | |
725 | struct device_attribute *attr, char *buf) | |
726 | { | |
727 | struct w83791d_data *data = w83791d_update_device(dev); | |
728 | return sprintf(buf, "%d\n", data->vrm); | |
729 | } | |
730 | ||
731 | static ssize_t store_vrm_reg(struct device *dev, | |
732 | struct device_attribute *attr, | |
733 | const char *buf, size_t count) | |
734 | { | |
735 | struct i2c_client *client = to_i2c_client(dev); | |
736 | struct w83791d_data *data = i2c_get_clientdata(client); | |
737 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
738 | ||
739 | /* No lock needed as vrm is internal to the driver | |
740 | (not read from a chip register) and so is not | |
741 | updated in w83791d_update_device() */ | |
742 | data->vrm = val; | |
743 | ||
744 | return count; | |
745 | } | |
746 | ||
747 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
748 | ||
34fc921a JC |
749 | #define IN_UNIT_ATTRS(X) \ |
750 | &sda_in_input[X].dev_attr.attr, \ | |
751 | &sda_in_min[X].dev_attr.attr, \ | |
752 | &sda_in_max[X].dev_attr.attr | |
753 | ||
754 | #define FAN_UNIT_ATTRS(X) \ | |
755 | &sda_fan_input[X].dev_attr.attr, \ | |
756 | &sda_fan_min[X].dev_attr.attr, \ | |
757 | &sda_fan_div[X].dev_attr.attr | |
758 | ||
759 | #define TEMP_UNIT_ATTRS(X) \ | |
760 | &sda_temp_input[X].dev_attr.attr, \ | |
761 | &sda_temp_max[X].dev_attr.attr, \ | |
762 | &sda_temp_max_hyst[X].dev_attr.attr | |
763 | ||
764 | static struct attribute *w83791d_attributes[] = { | |
765 | IN_UNIT_ATTRS(0), | |
766 | IN_UNIT_ATTRS(1), | |
767 | IN_UNIT_ATTRS(2), | |
768 | IN_UNIT_ATTRS(3), | |
769 | IN_UNIT_ATTRS(4), | |
770 | IN_UNIT_ATTRS(5), | |
771 | IN_UNIT_ATTRS(6), | |
772 | IN_UNIT_ATTRS(7), | |
773 | IN_UNIT_ATTRS(8), | |
774 | IN_UNIT_ATTRS(9), | |
775 | FAN_UNIT_ATTRS(0), | |
776 | FAN_UNIT_ATTRS(1), | |
777 | FAN_UNIT_ATTRS(2), | |
778 | FAN_UNIT_ATTRS(3), | |
779 | FAN_UNIT_ATTRS(4), | |
780 | TEMP_UNIT_ATTRS(0), | |
781 | TEMP_UNIT_ATTRS(1), | |
782 | TEMP_UNIT_ATTRS(2), | |
783 | &dev_attr_alarms.attr, | |
784 | &sda_beep_ctrl[0].dev_attr.attr, | |
785 | &sda_beep_ctrl[1].dev_attr.attr, | |
786 | &dev_attr_cpu0_vid.attr, | |
787 | &dev_attr_vrm.attr, | |
788 | NULL | |
789 | }; | |
790 | ||
791 | static const struct attribute_group w83791d_group = { | |
792 | .attrs = w83791d_attributes, | |
793 | }; | |
794 | ||
9873964d CS |
795 | /* This function is called when: |
796 | * w83791d_driver is inserted (when this module is loaded), for each | |
797 | available adapter | |
798 | * when a new adapter is inserted (and w83791d_driver is still present) */ | |
799 | static int w83791d_attach_adapter(struct i2c_adapter *adapter) | |
800 | { | |
801 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
802 | return 0; | |
803 | return i2c_probe(adapter, &addr_data, w83791d_detect); | |
804 | } | |
805 | ||
806 | ||
807 | static int w83791d_create_subclient(struct i2c_adapter *adapter, | |
808 | struct i2c_client *client, int addr, | |
809 | struct i2c_client **sub_cli) | |
810 | { | |
811 | int err; | |
812 | struct i2c_client *sub_client; | |
813 | ||
814 | (*sub_cli) = sub_client = | |
815 | kzalloc(sizeof(struct i2c_client), GFP_KERNEL); | |
816 | if (!(sub_client)) { | |
817 | return -ENOMEM; | |
818 | } | |
819 | sub_client->addr = 0x48 + addr; | |
820 | i2c_set_clientdata(sub_client, NULL); | |
821 | sub_client->adapter = adapter; | |
822 | sub_client->driver = &w83791d_driver; | |
823 | strlcpy(sub_client->name, "w83791d subclient", I2C_NAME_SIZE); | |
824 | if ((err = i2c_attach_client(sub_client))) { | |
825 | dev_err(&client->dev, "subclient registration " | |
826 | "at address 0x%x failed\n", sub_client->addr); | |
827 | kfree(sub_client); | |
828 | return err; | |
829 | } | |
830 | return 0; | |
831 | } | |
832 | ||
833 | ||
834 | static int w83791d_detect_subclients(struct i2c_adapter *adapter, int address, | |
835 | int kind, struct i2c_client *client) | |
836 | { | |
837 | struct w83791d_data *data = i2c_get_clientdata(client); | |
838 | int i, id, err; | |
839 | u8 val; | |
840 | ||
841 | id = i2c_adapter_id(adapter); | |
842 | if (force_subclients[0] == id && force_subclients[1] == address) { | |
843 | for (i = 2; i <= 3; i++) { | |
844 | if (force_subclients[i] < 0x48 || | |
845 | force_subclients[i] > 0x4f) { | |
846 | dev_err(&client->dev, | |
847 | "invalid subclient " | |
848 | "address %d; must be 0x48-0x4f\n", | |
849 | force_subclients[i]); | |
850 | err = -ENODEV; | |
851 | goto error_sc_0; | |
852 | } | |
853 | } | |
854 | w83791d_write(client, W83791D_REG_I2C_SUBADDR, | |
855 | (force_subclients[2] & 0x07) | | |
856 | ((force_subclients[3] & 0x07) << 4)); | |
857 | } | |
858 | ||
859 | val = w83791d_read(client, W83791D_REG_I2C_SUBADDR); | |
860 | if (!(val & 0x08)) { | |
861 | err = w83791d_create_subclient(adapter, client, | |
862 | val & 0x7, &data->lm75[0]); | |
863 | if (err < 0) | |
864 | goto error_sc_0; | |
865 | } | |
866 | if (!(val & 0x80)) { | |
867 | if ((data->lm75[0] != NULL) && | |
868 | ((val & 0x7) == ((val >> 4) & 0x7))) { | |
869 | dev_err(&client->dev, | |
870 | "duplicate addresses 0x%x, " | |
871 | "use force_subclient\n", | |
872 | data->lm75[0]->addr); | |
873 | err = -ENODEV; | |
874 | goto error_sc_1; | |
875 | } | |
876 | err = w83791d_create_subclient(adapter, client, | |
877 | (val >> 4) & 0x7, &data->lm75[1]); | |
878 | if (err < 0) | |
879 | goto error_sc_1; | |
880 | } | |
881 | ||
882 | return 0; | |
883 | ||
884 | /* Undo inits in case of errors */ | |
885 | ||
886 | error_sc_1: | |
887 | if (data->lm75[0] != NULL) { | |
888 | i2c_detach_client(data->lm75[0]); | |
889 | kfree(data->lm75[0]); | |
890 | } | |
891 | error_sc_0: | |
892 | return err; | |
893 | } | |
894 | ||
895 | ||
896 | static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind) | |
897 | { | |
898 | struct i2c_client *client; | |
899 | struct device *dev; | |
900 | struct w83791d_data *data; | |
901 | int i, val1, val2; | |
902 | int err = 0; | |
903 | const char *client_name = ""; | |
904 | ||
905 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
906 | goto error0; | |
907 | } | |
908 | ||
909 | /* OK. For now, we presume we have a valid client. We now create the | |
910 | client structure, even though we cannot fill it completely yet. | |
911 | But it allows us to access w83791d_{read,write}_value. */ | |
912 | if (!(data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL))) { | |
913 | err = -ENOMEM; | |
914 | goto error0; | |
915 | } | |
916 | ||
917 | client = &data->client; | |
918 | dev = &client->dev; | |
919 | i2c_set_clientdata(client, data); | |
920 | client->addr = address; | |
921 | client->adapter = adapter; | |
922 | client->driver = &w83791d_driver; | |
923 | mutex_init(&data->update_lock); | |
924 | ||
925 | /* Now, we do the remaining detection. */ | |
926 | ||
927 | /* The w83791d may be stuck in some other bank than bank 0. This may | |
928 | make reading other information impossible. Specify a force=... | |
929 | parameter, and the Winbond will be reset to the right bank. */ | |
930 | if (kind < 0) { | |
931 | if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80) { | |
932 | dev_dbg(dev, "Detection failed at step 1\n"); | |
933 | goto error1; | |
934 | } | |
935 | val1 = w83791d_read(client, W83791D_REG_BANK); | |
936 | val2 = w83791d_read(client, W83791D_REG_CHIPMAN); | |
937 | /* Check for Winbond ID if in bank 0 */ | |
938 | if (!(val1 & 0x07)) { | |
939 | /* yes it is Bank0 */ | |
940 | if (((!(val1 & 0x80)) && (val2 != 0xa3)) || | |
941 | ((val1 & 0x80) && (val2 != 0x5c))) { | |
942 | dev_dbg(dev, "Detection failed at step 2\n"); | |
943 | goto error1; | |
944 | } | |
945 | } | |
946 | /* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR | |
947 | should match */ | |
948 | if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address) { | |
949 | dev_dbg(dev, "Detection failed at step 3\n"); | |
950 | goto error1; | |
951 | } | |
952 | } | |
953 | ||
954 | /* We either have a force parameter or we have reason to | |
955 | believe it is a Winbond chip. Either way, we want bank 0 and | |
956 | Vendor ID high byte */ | |
957 | val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78; | |
958 | w83791d_write(client, W83791D_REG_BANK, val1 | 0x80); | |
959 | ||
960 | /* Verify it is a Winbond w83791d */ | |
961 | if (kind <= 0) { | |
962 | /* get vendor ID */ | |
963 | val2 = w83791d_read(client, W83791D_REG_CHIPMAN); | |
964 | if (val2 != 0x5c) { /* the vendor is NOT Winbond */ | |
965 | dev_dbg(dev, "Detection failed at step 4\n"); | |
966 | goto error1; | |
967 | } | |
968 | val1 = w83791d_read(client, W83791D_REG_WCHIPID); | |
969 | if (val1 == 0x71) { | |
970 | kind = w83791d; | |
971 | } else { | |
972 | if (kind == 0) | |
973 | dev_warn(dev, | |
974 | "w83791d: Ignoring 'force' parameter " | |
975 | "for unknown chip at adapter %d, " | |
976 | "address 0x%02x\n", | |
977 | i2c_adapter_id(adapter), address); | |
978 | goto error1; | |
979 | } | |
980 | } | |
981 | ||
982 | if (kind == w83791d) { | |
983 | client_name = "w83791d"; | |
984 | } else { | |
985 | dev_err(dev, "w83791d: Internal error: unknown kind (%d)?!?", | |
986 | kind); | |
987 | goto error1; | |
988 | } | |
989 | ||
990 | #ifdef DEBUG | |
991 | val1 = w83791d_read(client, W83791D_REG_DID_VID4); | |
992 | dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n", | |
993 | (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1); | |
994 | #endif | |
995 | ||
996 | /* Fill in the remaining client fields and put into the global list */ | |
997 | strlcpy(client->name, client_name, I2C_NAME_SIZE); | |
998 | ||
999 | /* Tell the I2C layer a new client has arrived */ | |
1000 | if ((err = i2c_attach_client(client))) | |
1001 | goto error1; | |
1002 | ||
1003 | if ((err = w83791d_detect_subclients(adapter, address, kind, client))) | |
1004 | goto error2; | |
1005 | ||
1006 | /* Initialize the chip */ | |
1007 | w83791d_init_client(client); | |
1008 | ||
1009 | /* If the fan_div is changed, make sure there is a rational | |
1010 | fan_min in place */ | |
1011 | for (i = 0; i < NUMBER_OF_FANIN; i++) { | |
1012 | data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]); | |
1013 | } | |
1014 | ||
1015 | /* Register sysfs hooks */ | |
34fc921a JC |
1016 | if ((err = sysfs_create_group(&client->dev.kobj, &w83791d_group))) |
1017 | goto error3; | |
1018 | ||
1019 | /* Everything is ready, now register the working device */ | |
9873964d CS |
1020 | data->class_dev = hwmon_device_register(dev); |
1021 | if (IS_ERR(data->class_dev)) { | |
1022 | err = PTR_ERR(data->class_dev); | |
34fc921a | 1023 | goto error4; |
9873964d CS |
1024 | } |
1025 | ||
9873964d CS |
1026 | return 0; |
1027 | ||
34fc921a JC |
1028 | error4: |
1029 | sysfs_remove_group(&client->dev.kobj, &w83791d_group); | |
9873964d CS |
1030 | error3: |
1031 | if (data->lm75[0] != NULL) { | |
1032 | i2c_detach_client(data->lm75[0]); | |
1033 | kfree(data->lm75[0]); | |
1034 | } | |
1035 | if (data->lm75[1] != NULL) { | |
1036 | i2c_detach_client(data->lm75[1]); | |
1037 | kfree(data->lm75[1]); | |
1038 | } | |
1039 | error2: | |
1040 | i2c_detach_client(client); | |
1041 | error1: | |
1042 | kfree(data); | |
1043 | error0: | |
1044 | return err; | |
1045 | } | |
1046 | ||
1047 | static int w83791d_detach_client(struct i2c_client *client) | |
1048 | { | |
1049 | struct w83791d_data *data = i2c_get_clientdata(client); | |
1050 | int err; | |
1051 | ||
1052 | /* main client */ | |
34fc921a | 1053 | if (data) { |
9873964d | 1054 | hwmon_device_unregister(data->class_dev); |
34fc921a JC |
1055 | sysfs_remove_group(&client->dev.kobj, &w83791d_group); |
1056 | } | |
9873964d CS |
1057 | |
1058 | if ((err = i2c_detach_client(client))) | |
1059 | return err; | |
1060 | ||
1061 | /* main client */ | |
1062 | if (data) | |
1063 | kfree(data); | |
1064 | /* subclient */ | |
1065 | else | |
1066 | kfree(client); | |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | static void w83791d_init_client(struct i2c_client *client) | |
1072 | { | |
1073 | struct w83791d_data *data = i2c_get_clientdata(client); | |
1074 | u8 tmp; | |
1075 | u8 old_beep; | |
1076 | ||
1077 | /* The difference between reset and init is that reset | |
1078 | does a hard reset of the chip via index 0x40, bit 7, | |
1079 | but init simply forces certain registers to have "sane" | |
1080 | values. The hope is that the BIOS has done the right | |
1081 | thing (which is why the default is reset=0, init=0), | |
1082 | but if not, reset is the hard hammer and init | |
1083 | is the soft mallet both of which are trying to whack | |
1084 | things into place... | |
1085 | NOTE: The data sheet makes a distinction between | |
1086 | "power on defaults" and "reset by MR". As far as I can tell, | |
1087 | the hard reset puts everything into a power-on state so I'm | |
1088 | not sure what "reset by MR" means or how it can happen. | |
1089 | */ | |
1090 | if (reset || init) { | |
1091 | /* keep some BIOS settings when we... */ | |
1092 | old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG); | |
1093 | ||
1094 | if (reset) { | |
1095 | /* ... reset the chip and ... */ | |
1096 | w83791d_write(client, W83791D_REG_CONFIG, 0x80); | |
1097 | } | |
1098 | ||
1099 | /* ... disable power-on abnormal beep */ | |
1100 | w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80); | |
1101 | ||
1102 | /* disable the global beep (not done by hard reset) */ | |
1103 | tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]); | |
1104 | w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef); | |
1105 | ||
1106 | if (init) { | |
1107 | /* Make sure monitoring is turned on for add-ons */ | |
1108 | tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG); | |
1109 | if (tmp & 1) { | |
1110 | w83791d_write(client, W83791D_REG_TEMP2_CONFIG, | |
1111 | tmp & 0xfe); | |
1112 | } | |
1113 | ||
1114 | tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG); | |
1115 | if (tmp & 1) { | |
1116 | w83791d_write(client, W83791D_REG_TEMP3_CONFIG, | |
1117 | tmp & 0xfe); | |
1118 | } | |
1119 | ||
1120 | /* Start monitoring */ | |
1121 | tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7; | |
1122 | w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01); | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | data->vrm = vid_which_vrm(); | |
1127 | } | |
1128 | ||
1129 | static struct w83791d_data *w83791d_update_device(struct device *dev) | |
1130 | { | |
1131 | struct i2c_client *client = to_i2c_client(dev); | |
1132 | struct w83791d_data *data = i2c_get_clientdata(client); | |
1133 | int i, j; | |
1134 | u8 reg_array_tmp[3]; | |
1135 | ||
1136 | mutex_lock(&data->update_lock); | |
1137 | ||
1138 | if (time_after(jiffies, data->last_updated + (HZ * 3)) | |
1139 | || !data->valid) { | |
1140 | dev_dbg(dev, "Starting w83791d device update\n"); | |
1141 | ||
1142 | /* Update the voltages measured value and limits */ | |
1143 | for (i = 0; i < NUMBER_OF_VIN; i++) { | |
1144 | data->in[i] = w83791d_read(client, | |
1145 | W83791D_REG_IN[i]); | |
1146 | data->in_max[i] = w83791d_read(client, | |
1147 | W83791D_REG_IN_MAX[i]); | |
1148 | data->in_min[i] = w83791d_read(client, | |
1149 | W83791D_REG_IN_MIN[i]); | |
1150 | } | |
1151 | ||
1152 | /* Update the fan counts and limits */ | |
1153 | for (i = 0; i < NUMBER_OF_FANIN; i++) { | |
1154 | /* Update the Fan measured value and limits */ | |
1155 | data->fan[i] = w83791d_read(client, | |
1156 | W83791D_REG_FAN[i]); | |
1157 | data->fan_min[i] = w83791d_read(client, | |
1158 | W83791D_REG_FAN_MIN[i]); | |
1159 | } | |
1160 | ||
1161 | /* Update the fan divisor */ | |
1162 | for (i = 0; i < 3; i++) { | |
1163 | reg_array_tmp[i] = w83791d_read(client, | |
1164 | W83791D_REG_FAN_DIV[i]); | |
1165 | } | |
1166 | data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03; | |
1167 | data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03; | |
1168 | data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03; | |
1169 | data->fan_div[3] = reg_array_tmp[2] & 0x07; | |
1170 | data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07; | |
1171 | ||
1172 | /* Update the first temperature sensor */ | |
1173 | for (i = 0; i < 3; i++) { | |
1174 | data->temp1[i] = w83791d_read(client, | |
1175 | W83791D_REG_TEMP1[i]); | |
1176 | } | |
1177 | ||
1178 | /* Update the rest of the temperature sensors */ | |
1179 | for (i = 0; i < 2; i++) { | |
1180 | for (j = 0; j < 3; j++) { | |
1181 | data->temp_add[i][j] = | |
1182 | (w83791d_read(client, | |
1183 | W83791D_REG_TEMP_ADD[i][j * 2]) << 8) | | |
1184 | w83791d_read(client, | |
1185 | W83791D_REG_TEMP_ADD[i][j * 2 + 1]); | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | /* Update the realtime status */ | |
1190 | data->alarms = | |
1191 | w83791d_read(client, W83791D_REG_ALARM1) + | |
1192 | (w83791d_read(client, W83791D_REG_ALARM2) << 8) + | |
1193 | (w83791d_read(client, W83791D_REG_ALARM3) << 16); | |
1194 | ||
1195 | /* Update the beep configuration information */ | |
1196 | data->beep_mask = | |
1197 | w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) + | |
1198 | (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) + | |
1199 | (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16); | |
1200 | ||
125751cb | 1201 | /* Extract global beep enable flag */ |
9873964d CS |
1202 | data->beep_enable = |
1203 | (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01; | |
1204 | ||
1205 | /* Update the cpu voltage information */ | |
1206 | i = w83791d_read(client, W83791D_REG_VID_FANDIV); | |
1207 | data->vid = i & 0x0f; | |
1208 | data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01) | |
1209 | << 4; | |
1210 | ||
1211 | data->last_updated = jiffies; | |
1212 | data->valid = 1; | |
1213 | } | |
1214 | ||
1215 | mutex_unlock(&data->update_lock); | |
1216 | ||
1217 | #ifdef DEBUG | |
1218 | w83791d_print_debug(data, dev); | |
1219 | #endif | |
1220 | ||
1221 | return data; | |
1222 | } | |
1223 | ||
1224 | #ifdef DEBUG | |
1225 | static void w83791d_print_debug(struct w83791d_data *data, struct device *dev) | |
1226 | { | |
1227 | int i = 0, j = 0; | |
1228 | ||
1229 | dev_dbg(dev, "======Start of w83791d debug values======\n"); | |
1230 | dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN); | |
1231 | for (i = 0; i < NUMBER_OF_VIN; i++) { | |
1232 | dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]); | |
1233 | dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]); | |
1234 | dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]); | |
1235 | } | |
1236 | dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN); | |
1237 | for (i = 0; i < NUMBER_OF_FANIN; i++) { | |
1238 | dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]); | |
1239 | dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]); | |
1240 | dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]); | |
1241 | } | |
1242 | ||
1243 | /* temperature math is signed, but only print out the | |
1244 | bits that matter */ | |
1245 | dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN); | |
1246 | for (i = 0; i < 3; i++) { | |
1247 | dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]); | |
1248 | } | |
1249 | for (i = 0; i < 2; i++) { | |
1250 | for (j = 0; j < 3; j++) { | |
1251 | dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j, | |
1252 | (u16) data->temp_add[i][j]); | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | dev_dbg(dev, "Misc Information: ===>\n"); | |
1257 | dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms); | |
1258 | dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask); | |
1259 | dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable); | |
1260 | dev_dbg(dev, "vid is: 0x%02x\n", data->vid); | |
1261 | dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm); | |
1262 | dev_dbg(dev, "=======End of w83791d debug values========\n"); | |
1263 | dev_dbg(dev, "\n"); | |
1264 | } | |
1265 | #endif | |
1266 | ||
1267 | static int __init sensors_w83791d_init(void) | |
1268 | { | |
1269 | return i2c_add_driver(&w83791d_driver); | |
1270 | } | |
1271 | ||
1272 | static void __exit sensors_w83791d_exit(void) | |
1273 | { | |
1274 | i2c_del_driver(&w83791d_driver); | |
1275 | } | |
1276 | ||
1277 | MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>"); | |
1278 | MODULE_DESCRIPTION("W83791D driver"); | |
1279 | MODULE_LICENSE("GPL"); | |
1280 | ||
1281 | module_init(sensors_w83791d_init); | |
1282 | module_exit(sensors_w83791d_exit); |