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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 | |
30 | w83781d.c files, but its output is more along the lines of the | |
31 | 83781d (which means there are no changes to the user-mode sensors | |
32 | program which treats the 83791d as an 83781d). | |
33 | */ | |
34 | ||
35 | #include <linux/config.h> | |
36 | #include <linux/module.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/i2c.h> | |
40 | #include <linux/hwmon.h> | |
41 | #include <linux/hwmon-vid.h> | |
42 | #include <linux/hwmon-sysfs.h> | |
43 | #include <linux/err.h> | |
44 | #include <linux/mutex.h> | |
45 | ||
46 | #define NUMBER_OF_VIN 10 | |
47 | #define NUMBER_OF_FANIN 5 | |
48 | #define NUMBER_OF_TEMPIN 3 | |
49 | ||
50 | /* Addresses to scan */ | |
51 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; | |
52 | ||
53 | /* Insmod parameters */ | |
54 | I2C_CLIENT_INSMOD_1(w83791d); | |
55 | I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: " | |
56 | "{bus, clientaddr, subclientaddr1, subclientaddr2}"); | |
57 | ||
58 | static int reset; | |
59 | module_param(reset, bool, 0); | |
60 | MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset"); | |
61 | ||
62 | static int init; | |
63 | module_param(init, bool, 0); | |
64 | MODULE_PARM_DESC(init, "Set to one to force extra software initialization"); | |
65 | ||
66 | /* The W83791D registers */ | |
67 | static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = { | |
68 | 0x20, /* VCOREA in DataSheet */ | |
69 | 0x21, /* VINR0 in DataSheet */ | |
70 | 0x22, /* +3.3VIN in DataSheet */ | |
71 | 0x23, /* VDD5V in DataSheet */ | |
72 | 0x24, /* +12VIN in DataSheet */ | |
73 | 0x25, /* -12VIN in DataSheet */ | |
74 | 0x26, /* -5VIN in DataSheet */ | |
75 | 0xB0, /* 5VSB in DataSheet */ | |
76 | 0xB1, /* VBAT in DataSheet */ | |
77 | 0xB2 /* VINR1 in DataSheet */ | |
78 | }; | |
79 | ||
80 | static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = { | |
81 | 0x2B, /* VCOREA High Limit in DataSheet */ | |
82 | 0x2D, /* VINR0 High Limit in DataSheet */ | |
83 | 0x2F, /* +3.3VIN High Limit in DataSheet */ | |
84 | 0x31, /* VDD5V High Limit in DataSheet */ | |
85 | 0x33, /* +12VIN High Limit in DataSheet */ | |
86 | 0x35, /* -12VIN High Limit in DataSheet */ | |
87 | 0x37, /* -5VIN High Limit in DataSheet */ | |
88 | 0xB4, /* 5VSB High Limit in DataSheet */ | |
89 | 0xB6, /* VBAT High Limit in DataSheet */ | |
90 | 0xB8 /* VINR1 High Limit in DataSheet */ | |
91 | }; | |
92 | static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = { | |
93 | 0x2C, /* VCOREA Low Limit in DataSheet */ | |
94 | 0x2E, /* VINR0 Low Limit in DataSheet */ | |
95 | 0x30, /* +3.3VIN Low Limit in DataSheet */ | |
96 | 0x32, /* VDD5V Low Limit in DataSheet */ | |
97 | 0x34, /* +12VIN Low Limit in DataSheet */ | |
98 | 0x36, /* -12VIN Low Limit in DataSheet */ | |
99 | 0x38, /* -5VIN Low Limit in DataSheet */ | |
100 | 0xB5, /* 5VSB Low Limit in DataSheet */ | |
101 | 0xB7, /* VBAT Low Limit in DataSheet */ | |
102 | 0xB9 /* VINR1 Low Limit in DataSheet */ | |
103 | }; | |
104 | static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = { | |
105 | 0x28, /* FAN 1 Count in DataSheet */ | |
106 | 0x29, /* FAN 2 Count in DataSheet */ | |
107 | 0x2A, /* FAN 3 Count in DataSheet */ | |
108 | 0xBA, /* FAN 4 Count in DataSheet */ | |
109 | 0xBB, /* FAN 5 Count in DataSheet */ | |
110 | }; | |
111 | static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = { | |
112 | 0x3B, /* FAN 1 Count Low Limit in DataSheet */ | |
113 | 0x3C, /* FAN 2 Count Low Limit in DataSheet */ | |
114 | 0x3D, /* FAN 3 Count Low Limit in DataSheet */ | |
115 | 0xBC, /* FAN 4 Count Low Limit in DataSheet */ | |
116 | 0xBD, /* FAN 5 Count Low Limit in DataSheet */ | |
117 | }; | |
118 | ||
119 | static const u8 W83791D_REG_FAN_CFG[2] = { | |
120 | 0x84, /* FAN 1/2 configuration */ | |
121 | 0x95, /* FAN 3 configuration */ | |
122 | }; | |
123 | ||
124 | static const u8 W83791D_REG_FAN_DIV[3] = { | |
125 | 0x47, /* contains FAN1 and FAN2 Divisor */ | |
126 | 0x4b, /* contains FAN3 Divisor */ | |
127 | 0x5C, /* contains FAN4 and FAN5 Divisor */ | |
128 | }; | |
129 | ||
130 | #define W83791D_REG_BANK 0x4E | |
131 | #define W83791D_REG_TEMP2_CONFIG 0xC2 | |
132 | #define W83791D_REG_TEMP3_CONFIG 0xCA | |
133 | ||
134 | static const u8 W83791D_REG_TEMP1[3] = { | |
135 | 0x27, /* TEMP 1 in DataSheet */ | |
136 | 0x39, /* TEMP 1 Over in DataSheet */ | |
137 | 0x3A, /* TEMP 1 Hyst in DataSheet */ | |
138 | }; | |
139 | ||
140 | static const u8 W83791D_REG_TEMP_ADD[2][6] = { | |
141 | {0xC0, /* TEMP 2 in DataSheet */ | |
142 | 0xC1, /* TEMP 2(0.5 deg) in DataSheet */ | |
143 | 0xC5, /* TEMP 2 Over High part in DataSheet */ | |
144 | 0xC6, /* TEMP 2 Over Low part in DataSheet */ | |
145 | 0xC3, /* TEMP 2 Thyst High part in DataSheet */ | |
146 | 0xC4}, /* TEMP 2 Thyst Low part in DataSheet */ | |
147 | {0xC8, /* TEMP 3 in DataSheet */ | |
148 | 0xC9, /* TEMP 3(0.5 deg) in DataSheet */ | |
149 | 0xCD, /* TEMP 3 Over High part in DataSheet */ | |
150 | 0xCE, /* TEMP 3 Over Low part in DataSheet */ | |
151 | 0xCB, /* TEMP 3 Thyst High part in DataSheet */ | |
152 | 0xCC} /* TEMP 3 Thyst Low part in DataSheet */ | |
153 | }; | |
154 | ||
155 | #define W83791D_REG_BEEP_CONFIG 0x4D | |
156 | ||
157 | static const u8 W83791D_REG_BEEP_CTRL[3] = { | |
158 | 0x56, /* BEEP Control Register 1 */ | |
159 | 0x57, /* BEEP Control Register 2 */ | |
160 | 0xA3, /* BEEP Control Register 3 */ | |
161 | }; | |
162 | ||
163 | #define W83791D_REG_CONFIG 0x40 | |
164 | #define W83791D_REG_VID_FANDIV 0x47 | |
165 | #define W83791D_REG_DID_VID4 0x49 | |
166 | #define W83791D_REG_WCHIPID 0x58 | |
167 | #define W83791D_REG_CHIPMAN 0x4F | |
168 | #define W83791D_REG_PIN 0x4B | |
169 | #define W83791D_REG_I2C_SUBADDR 0x4A | |
170 | ||
171 | #define W83791D_REG_ALARM1 0xA9 /* realtime status register1 */ | |
172 | #define W83791D_REG_ALARM2 0xAA /* realtime status register2 */ | |
173 | #define W83791D_REG_ALARM3 0xAB /* realtime status register3 */ | |
174 | ||
175 | #define W83791D_REG_VBAT 0x5D | |
176 | #define W83791D_REG_I2C_ADDR 0x48 | |
177 | ||
178 | /* The SMBus locks itself. The Winbond W83791D has a bank select register | |
179 | (index 0x4e), but the driver only accesses registers in bank 0. Since | |
180 | we don't switch banks, we don't need any special code to handle | |
181 | locking access between bank switches */ | |
182 | static inline int w83791d_read(struct i2c_client *client, u8 reg) | |
183 | { | |
184 | return i2c_smbus_read_byte_data(client, reg); | |
185 | } | |
186 | ||
187 | static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value) | |
188 | { | |
189 | return i2c_smbus_write_byte_data(client, reg, value); | |
190 | } | |
191 | ||
192 | /* The analog voltage inputs have 16mV LSB. Since the sysfs output is | |
193 | in mV as would be measured on the chip input pin, need to just | |
194 | multiply/divide by 16 to translate from/to register values. */ | |
195 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8) / 16), 0, 255)) | |
196 | #define IN_FROM_REG(val) ((val) * 16) | |
197 | ||
198 | static u8 fan_to_reg(long rpm, int div) | |
199 | { | |
200 | if (rpm == 0) | |
201 | return 255; | |
202 | rpm = SENSORS_LIMIT(rpm, 1, 1000000); | |
203 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); | |
204 | } | |
205 | ||
206 | #define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \ | |
207 | ((val) == 255 ? 0 : \ | |
208 | 1350000 / ((val) * (div)))) | |
209 | ||
210 | /* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */ | |
211 | #define TEMP1_FROM_REG(val) ((val) * 1000) | |
212 | #define TEMP1_TO_REG(val) ((val) <= -128000 ? -128 : \ | |
213 | (val) >= 127000 ? 127 : \ | |
214 | (val) < 0 ? ((val) - 500) / 1000 : \ | |
215 | ((val) + 500) / 1000) | |
216 | ||
217 | /* for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius | |
218 | Assumes the top 8 bits are the integral amount and the bottom 8 bits | |
219 | are the fractional amount. Since we only have 0.5 degree resolution, | |
220 | the bottom 7 bits will always be zero */ | |
221 | #define TEMP23_FROM_REG(val) ((val) / 128 * 500) | |
222 | #define TEMP23_TO_REG(val) ((val) <= -128000 ? 0x8000 : \ | |
223 | (val) >= 127500 ? 0x7F80 : \ | |
224 | (val) < 0 ? ((val) - 250) / 500 * 128 : \ | |
225 | ((val) + 250) / 500 * 128) | |
226 | ||
227 | ||
228 | #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff) | |
229 | #define BEEP_MASK_FROM_REG(val) ((val) & 0xffffff) | |
230 | ||
231 | #define DIV_FROM_REG(val) (1 << (val)) | |
232 | ||
233 | static u8 div_to_reg(int nr, long val) | |
234 | { | |
235 | int i; | |
236 | int max; | |
237 | ||
238 | /* first three fan's divisor max out at 8, rest max out at 128 */ | |
239 | max = (nr < 3) ? 8 : 128; | |
240 | val = SENSORS_LIMIT(val, 1, max) >> 1; | |
241 | for (i = 0; i < 7; i++) { | |
242 | if (val == 0) | |
243 | break; | |
244 | val >>= 1; | |
245 | } | |
246 | return (u8) i; | |
247 | } | |
248 | ||
249 | struct w83791d_data { | |
250 | struct i2c_client client; | |
251 | struct class_device *class_dev; | |
252 | struct mutex update_lock; | |
253 | ||
254 | char valid; /* !=0 if following fields are valid */ | |
255 | unsigned long last_updated; /* In jiffies */ | |
256 | ||
257 | /* array of 2 pointers to subclients */ | |
258 | struct i2c_client *lm75[2]; | |
259 | ||
260 | /* volts */ | |
261 | u8 in[NUMBER_OF_VIN]; /* Register value */ | |
262 | u8 in_max[NUMBER_OF_VIN]; /* Register value */ | |
263 | u8 in_min[NUMBER_OF_VIN]; /* Register value */ | |
264 | ||
265 | /* fans */ | |
266 | u8 fan[NUMBER_OF_FANIN]; /* Register value */ | |
267 | u8 fan_min[NUMBER_OF_FANIN]; /* Register value */ | |
268 | u8 fan_div[NUMBER_OF_FANIN]; /* Register encoding, shifted right */ | |
269 | ||
270 | /* Temperature sensors */ | |
271 | ||
272 | s8 temp1[3]; /* current, over, thyst */ | |
273 | s16 temp_add[2][3]; /* fixed point value. Top 8 bits are the | |
274 | integral part, bottom 8 bits are the | |
275 | fractional part. We only use the top | |
276 | 9 bits as the resolution is only | |
277 | to the 0.5 degree C... | |
278 | two sensors with three values | |
279 | (cur, over, hyst) */ | |
280 | ||
281 | /* Misc */ | |
282 | u32 alarms; /* realtime status register encoding,combined */ | |
283 | u8 beep_enable; /* Global beep enable */ | |
284 | u32 beep_mask; /* Mask off specific beeps */ | |
285 | u8 vid; /* Register encoding, combined */ | |
286 | u8 vrm; /* hwmon-vid */ | |
287 | }; | |
288 | ||
289 | static int w83791d_attach_adapter(struct i2c_adapter *adapter); | |
290 | static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind); | |
291 | static int w83791d_detach_client(struct i2c_client *client); | |
292 | ||
293 | static int w83791d_read(struct i2c_client *client, u8 register); | |
294 | static int w83791d_write(struct i2c_client *client, u8 register, u8 value); | |
295 | static struct w83791d_data *w83791d_update_device(struct device *dev); | |
296 | ||
297 | #ifdef DEBUG | |
298 | static void w83791d_print_debug(struct w83791d_data *data, struct device *dev); | |
299 | #endif | |
300 | ||
301 | static void w83791d_init_client(struct i2c_client *client); | |
302 | ||
303 | static struct i2c_driver w83791d_driver = { | |
304 | .driver = { | |
305 | .name = "w83791d", | |
306 | }, | |
307 | .attach_adapter = w83791d_attach_adapter, | |
308 | .detach_client = w83791d_detach_client, | |
309 | }; | |
310 | ||
311 | /* following are the sysfs callback functions */ | |
312 | #define show_in_reg(reg) \ | |
313 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ | |
314 | char *buf) \ | |
315 | { \ | |
316 | struct sensor_device_attribute *sensor_attr = \ | |
317 | to_sensor_dev_attr(attr); \ | |
318 | struct w83791d_data *data = w83791d_update_device(dev); \ | |
319 | int nr = sensor_attr->index; \ | |
320 | return sprintf(buf,"%d\n", IN_FROM_REG(data->reg[nr])); \ | |
321 | } | |
322 | ||
323 | show_in_reg(in); | |
324 | show_in_reg(in_min); | |
325 | show_in_reg(in_max); | |
326 | ||
327 | #define store_in_reg(REG, reg) \ | |
328 | static ssize_t store_in_##reg(struct device *dev, \ | |
329 | struct device_attribute *attr, \ | |
330 | const char *buf, size_t count) \ | |
331 | { \ | |
332 | struct sensor_device_attribute *sensor_attr = \ | |
333 | to_sensor_dev_attr(attr); \ | |
334 | struct i2c_client *client = to_i2c_client(dev); \ | |
335 | struct w83791d_data *data = i2c_get_clientdata(client); \ | |
336 | unsigned long val = simple_strtoul(buf, NULL, 10); \ | |
337 | int nr = sensor_attr->index; \ | |
338 | \ | |
339 | mutex_lock(&data->update_lock); \ | |
340 | data->in_##reg[nr] = IN_TO_REG(val); \ | |
341 | w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \ | |
342 | mutex_unlock(&data->update_lock); \ | |
343 | \ | |
344 | return count; \ | |
345 | } | |
346 | store_in_reg(MIN, min); | |
347 | store_in_reg(MAX, max); | |
348 | ||
349 | static struct sensor_device_attribute sda_in_input[] = { | |
350 | SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0), | |
351 | SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), | |
352 | SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), | |
353 | SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), | |
354 | SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), | |
355 | SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), | |
356 | SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), | |
357 | SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), | |
358 | SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), | |
359 | SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9), | |
360 | }; | |
361 | ||
362 | static struct sensor_device_attribute sda_in_min[] = { | |
363 | SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0), | |
364 | SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1), | |
365 | SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2), | |
366 | SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3), | |
367 | SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4), | |
368 | SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5), | |
369 | SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6), | |
370 | SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7), | |
371 | SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8), | |
372 | SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9), | |
373 | }; | |
374 | ||
375 | static struct sensor_device_attribute sda_in_max[] = { | |
376 | SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0), | |
377 | SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1), | |
378 | SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2), | |
379 | SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3), | |
380 | SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4), | |
381 | SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5), | |
382 | SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6), | |
383 | SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7), | |
384 | SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8), | |
385 | SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9), | |
386 | }; | |
387 | ||
388 | #define show_fan_reg(reg) \ | |
389 | static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ | |
390 | char *buf) \ | |
391 | { \ | |
392 | struct sensor_device_attribute *sensor_attr = \ | |
393 | to_sensor_dev_attr(attr); \ | |
394 | struct w83791d_data *data = w83791d_update_device(dev); \ | |
395 | int nr = sensor_attr->index; \ | |
396 | return sprintf(buf,"%d\n", \ | |
397 | FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \ | |
398 | } | |
399 | ||
400 | show_fan_reg(fan); | |
401 | show_fan_reg(fan_min); | |
402 | ||
403 | static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr, | |
404 | const char *buf, size_t count) | |
405 | { | |
406 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
407 | struct i2c_client *client = to_i2c_client(dev); | |
408 | struct w83791d_data *data = i2c_get_clientdata(client); | |
409 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
410 | int nr = sensor_attr->index; | |
411 | ||
412 | mutex_lock(&data->update_lock); | |
413 | data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr])); | |
414 | w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]); | |
415 | mutex_unlock(&data->update_lock); | |
416 | ||
417 | return count; | |
418 | } | |
419 | ||
420 | static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, | |
421 | char *buf) | |
422 | { | |
423 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
424 | int nr = sensor_attr->index; | |
425 | struct w83791d_data *data = w83791d_update_device(dev); | |
426 | return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr])); | |
427 | } | |
428 | ||
429 | /* Note: we save and restore the fan minimum here, because its value is | |
430 | determined in part by the fan divisor. This follows the principle of | |
431 | least suprise; the user doesn't expect the fan minimum to change just | |
432 | because the divisor changed. */ | |
433 | static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr, | |
434 | const char *buf, size_t count) | |
435 | { | |
436 | struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); | |
437 | struct i2c_client *client = to_i2c_client(dev); | |
438 | struct w83791d_data *data = i2c_get_clientdata(client); | |
439 | int nr = sensor_attr->index; | |
440 | unsigned long min; | |
441 | u8 tmp_fan_div; | |
442 | u8 fan_div_reg; | |
443 | int indx = 0; | |
444 | u8 keep_mask = 0; | |
445 | u8 new_shift = 0; | |
446 | ||
447 | /* Save fan_min */ | |
448 | min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); | |
449 | ||
450 | mutex_lock(&data->update_lock); | |
451 | data->fan_div[nr] = div_to_reg(nr, simple_strtoul(buf, NULL, 10)); | |
452 | ||
453 | switch (nr) { | |
454 | case 0: | |
455 | indx = 0; | |
456 | keep_mask = 0xcf; | |
457 | new_shift = 4; | |
458 | break; | |
459 | case 1: | |
460 | indx = 0; | |
461 | keep_mask = 0x3f; | |
462 | new_shift = 6; | |
463 | break; | |
464 | case 2: | |
465 | indx = 1; | |
466 | keep_mask = 0x3f; | |
467 | new_shift = 6; | |
468 | break; | |
469 | case 3: | |
470 | indx = 2; | |
471 | keep_mask = 0xf8; | |
472 | new_shift = 0; | |
473 | break; | |
474 | case 4: | |
475 | indx = 2; | |
476 | keep_mask = 0x8f; | |
477 | new_shift = 4; | |
478 | break; | |
479 | #ifdef DEBUG | |
480 | default: | |
481 | dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr); | |
482 | count = -EINVAL; | |
483 | goto err_exit; | |
484 | #endif | |
485 | } | |
486 | ||
487 | fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx]) | |
488 | & keep_mask; | |
489 | tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask; | |
490 | ||
491 | w83791d_write(client, W83791D_REG_FAN_DIV[indx], | |
492 | fan_div_reg | tmp_fan_div); | |
493 | ||
494 | /* Restore fan_min */ | |
495 | data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr])); | |
496 | w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]); | |
497 | ||
498 | #ifdef DEBUG | |
499 | err_exit: | |
500 | #endif | |
501 | mutex_unlock(&data->update_lock); | |
502 | ||
503 | return count; | |
504 | } | |
505 | ||
506 | static struct sensor_device_attribute sda_fan_input[] = { | |
507 | SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), | |
508 | SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), | |
509 | SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), | |
510 | SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), | |
511 | SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), | |
512 | }; | |
513 | ||
514 | static struct sensor_device_attribute sda_fan_min[] = { | |
515 | SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, | |
516 | show_fan_min, store_fan_min, 0), | |
517 | SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, | |
518 | show_fan_min, store_fan_min, 1), | |
519 | SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, | |
520 | show_fan_min, store_fan_min, 2), | |
521 | SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, | |
522 | show_fan_min, store_fan_min, 3), | |
523 | SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, | |
524 | show_fan_min, store_fan_min, 4), | |
525 | }; | |
526 | ||
527 | static struct sensor_device_attribute sda_fan_div[] = { | |
528 | SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO, | |
529 | show_fan_div, store_fan_div, 0), | |
530 | SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO, | |
531 | show_fan_div, store_fan_div, 1), | |
532 | SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO, | |
533 | show_fan_div, store_fan_div, 2), | |
534 | SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO, | |
535 | show_fan_div, store_fan_div, 3), | |
536 | SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO, | |
537 | show_fan_div, store_fan_div, 4), | |
538 | }; | |
539 | ||
540 | /* read/write the temperature1, includes measured value and limits */ | |
541 | static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr, | |
542 | char *buf) | |
543 | { | |
544 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
545 | struct w83791d_data *data = w83791d_update_device(dev); | |
546 | return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index])); | |
547 | } | |
548 | ||
549 | static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr, | |
550 | const char *buf, size_t count) | |
551 | { | |
552 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
553 | struct i2c_client *client = to_i2c_client(dev); | |
554 | struct w83791d_data *data = i2c_get_clientdata(client); | |
555 | long val = simple_strtol(buf, NULL, 10); | |
556 | int nr = attr->index; | |
557 | ||
558 | mutex_lock(&data->update_lock); | |
559 | data->temp1[nr] = TEMP1_TO_REG(val); | |
560 | w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]); | |
561 | mutex_unlock(&data->update_lock); | |
562 | return count; | |
563 | } | |
564 | ||
565 | /* read/write temperature2-3, includes measured value and limits */ | |
566 | static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr, | |
567 | char *buf) | |
568 | { | |
569 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
570 | struct w83791d_data *data = w83791d_update_device(dev); | |
571 | int nr = attr->nr; | |
572 | int index = attr->index; | |
573 | return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index])); | |
574 | } | |
575 | ||
576 | static ssize_t store_temp23(struct device *dev, | |
577 | struct device_attribute *devattr, | |
578 | const char *buf, size_t count) | |
579 | { | |
580 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
581 | struct i2c_client *client = to_i2c_client(dev); | |
582 | struct w83791d_data *data = i2c_get_clientdata(client); | |
583 | long val = simple_strtol(buf, NULL, 10); | |
584 | int nr = attr->nr; | |
585 | int index = attr->index; | |
586 | ||
587 | mutex_lock(&data->update_lock); | |
588 | data->temp_add[nr][index] = TEMP23_TO_REG(val); | |
589 | w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2], | |
590 | data->temp_add[nr][index] >> 8); | |
591 | w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1], | |
592 | data->temp_add[nr][index] & 0x80); | |
593 | mutex_unlock(&data->update_lock); | |
594 | ||
595 | return count; | |
596 | } | |
597 | ||
598 | static struct sensor_device_attribute_2 sda_temp_input[] = { | |
599 | SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0), | |
600 | SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0), | |
601 | SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0), | |
602 | }; | |
603 | ||
604 | static struct sensor_device_attribute_2 sda_temp_max[] = { | |
605 | SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, | |
606 | show_temp1, store_temp1, 0, 1), | |
607 | SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, | |
608 | show_temp23, store_temp23, 0, 1), | |
609 | SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, | |
610 | show_temp23, store_temp23, 1, 1), | |
611 | }; | |
612 | ||
613 | static struct sensor_device_attribute_2 sda_temp_max_hyst[] = { | |
614 | SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR, | |
615 | show_temp1, store_temp1, 0, 2), | |
616 | SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR, | |
617 | show_temp23, store_temp23, 0, 2), | |
618 | SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR, | |
619 | show_temp23, store_temp23, 1, 2), | |
620 | }; | |
621 | ||
622 | ||
623 | /* get reatime status of all sensors items: voltage, temp, fan */ | |
624 | static ssize_t show_alarms_reg(struct device *dev, | |
625 | struct device_attribute *attr, char *buf) | |
626 | { | |
627 | struct w83791d_data *data = w83791d_update_device(dev); | |
628 | return sprintf(buf, "%u\n", data->alarms); | |
629 | } | |
630 | ||
631 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL); | |
632 | ||
633 | /* Beep control */ | |
634 | ||
635 | #define GLOBAL_BEEP_ENABLE_SHIFT 15 | |
636 | #define GLOBAL_BEEP_ENABLE_MASK (1 << GLOBAL_BEEP_ENABLE_SHIFT) | |
637 | ||
638 | static ssize_t show_beep_enable(struct device *dev, | |
639 | struct device_attribute *attr, char *buf) | |
640 | { | |
641 | struct w83791d_data *data = w83791d_update_device(dev); | |
642 | return sprintf(buf, "%d\n", data->beep_enable); | |
643 | } | |
644 | ||
645 | static ssize_t show_beep_mask(struct device *dev, | |
646 | struct device_attribute *attr, char *buf) | |
647 | { | |
648 | struct w83791d_data *data = w83791d_update_device(dev); | |
649 | return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask)); | |
650 | } | |
651 | ||
652 | ||
653 | static ssize_t store_beep_mask(struct device *dev, | |
654 | struct device_attribute *attr, | |
655 | const char *buf, size_t count) | |
656 | { | |
657 | struct i2c_client *client = to_i2c_client(dev); | |
658 | struct w83791d_data *data = i2c_get_clientdata(client); | |
659 | long val = simple_strtol(buf, NULL, 10); | |
660 | int i; | |
661 | ||
662 | mutex_lock(&data->update_lock); | |
663 | ||
664 | /* The beep_enable state overrides any enabling request from | |
665 | the masks */ | |
666 | data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK; | |
667 | data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT); | |
668 | ||
669 | val = data->beep_mask; | |
670 | ||
671 | for (i = 0; i < 3; i++) { | |
672 | w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff)); | |
673 | val >>= 8; | |
674 | } | |
675 | ||
676 | mutex_unlock(&data->update_lock); | |
677 | ||
678 | return count; | |
679 | } | |
680 | ||
681 | static ssize_t store_beep_enable(struct device *dev, | |
682 | struct device_attribute *attr, | |
683 | const char *buf, size_t count) | |
684 | { | |
685 | struct i2c_client *client = to_i2c_client(dev); | |
686 | struct w83791d_data *data = i2c_get_clientdata(client); | |
687 | long val = simple_strtol(buf, NULL, 10); | |
688 | ||
689 | mutex_lock(&data->update_lock); | |
690 | ||
691 | data->beep_enable = val ? 1 : 0; | |
692 | ||
693 | /* Keep the full mask value in sync with the current enable */ | |
694 | data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK; | |
695 | data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT); | |
696 | ||
697 | /* The global control is in the second beep control register | |
698 | so only need to update that register */ | |
699 | val = (data->beep_mask >> 8) & 0xff; | |
700 | ||
701 | w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val); | |
702 | ||
703 | mutex_unlock(&data->update_lock); | |
704 | ||
705 | return count; | |
706 | } | |
707 | ||
708 | static struct sensor_device_attribute sda_beep_ctrl[] = { | |
709 | SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR, | |
710 | show_beep_enable, store_beep_enable, 0), | |
711 | SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR, | |
712 | show_beep_mask, store_beep_mask, 1) | |
713 | }; | |
714 | ||
715 | /* cpu voltage regulation information */ | |
716 | static ssize_t show_vid_reg(struct device *dev, | |
717 | struct device_attribute *attr, char *buf) | |
718 | { | |
719 | struct w83791d_data *data = w83791d_update_device(dev); | |
720 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); | |
721 | } | |
722 | ||
723 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); | |
724 | ||
725 | static ssize_t show_vrm_reg(struct device *dev, | |
726 | struct device_attribute *attr, char *buf) | |
727 | { | |
728 | struct w83791d_data *data = w83791d_update_device(dev); | |
729 | return sprintf(buf, "%d\n", data->vrm); | |
730 | } | |
731 | ||
732 | static ssize_t store_vrm_reg(struct device *dev, | |
733 | struct device_attribute *attr, | |
734 | const char *buf, size_t count) | |
735 | { | |
736 | struct i2c_client *client = to_i2c_client(dev); | |
737 | struct w83791d_data *data = i2c_get_clientdata(client); | |
738 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
739 | ||
740 | /* No lock needed as vrm is internal to the driver | |
741 | (not read from a chip register) and so is not | |
742 | updated in w83791d_update_device() */ | |
743 | data->vrm = val; | |
744 | ||
745 | return count; | |
746 | } | |
747 | ||
748 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); | |
749 | ||
750 | /* This function is called when: | |
751 | * w83791d_driver is inserted (when this module is loaded), for each | |
752 | available adapter | |
753 | * when a new adapter is inserted (and w83791d_driver is still present) */ | |
754 | static int w83791d_attach_adapter(struct i2c_adapter *adapter) | |
755 | { | |
756 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
757 | return 0; | |
758 | return i2c_probe(adapter, &addr_data, w83791d_detect); | |
759 | } | |
760 | ||
761 | ||
762 | static int w83791d_create_subclient(struct i2c_adapter *adapter, | |
763 | struct i2c_client *client, int addr, | |
764 | struct i2c_client **sub_cli) | |
765 | { | |
766 | int err; | |
767 | struct i2c_client *sub_client; | |
768 | ||
769 | (*sub_cli) = sub_client = | |
770 | kzalloc(sizeof(struct i2c_client), GFP_KERNEL); | |
771 | if (!(sub_client)) { | |
772 | return -ENOMEM; | |
773 | } | |
774 | sub_client->addr = 0x48 + addr; | |
775 | i2c_set_clientdata(sub_client, NULL); | |
776 | sub_client->adapter = adapter; | |
777 | sub_client->driver = &w83791d_driver; | |
778 | strlcpy(sub_client->name, "w83791d subclient", I2C_NAME_SIZE); | |
779 | if ((err = i2c_attach_client(sub_client))) { | |
780 | dev_err(&client->dev, "subclient registration " | |
781 | "at address 0x%x failed\n", sub_client->addr); | |
782 | kfree(sub_client); | |
783 | return err; | |
784 | } | |
785 | return 0; | |
786 | } | |
787 | ||
788 | ||
789 | static int w83791d_detect_subclients(struct i2c_adapter *adapter, int address, | |
790 | int kind, struct i2c_client *client) | |
791 | { | |
792 | struct w83791d_data *data = i2c_get_clientdata(client); | |
793 | int i, id, err; | |
794 | u8 val; | |
795 | ||
796 | id = i2c_adapter_id(adapter); | |
797 | if (force_subclients[0] == id && force_subclients[1] == address) { | |
798 | for (i = 2; i <= 3; i++) { | |
799 | if (force_subclients[i] < 0x48 || | |
800 | force_subclients[i] > 0x4f) { | |
801 | dev_err(&client->dev, | |
802 | "invalid subclient " | |
803 | "address %d; must be 0x48-0x4f\n", | |
804 | force_subclients[i]); | |
805 | err = -ENODEV; | |
806 | goto error_sc_0; | |
807 | } | |
808 | } | |
809 | w83791d_write(client, W83791D_REG_I2C_SUBADDR, | |
810 | (force_subclients[2] & 0x07) | | |
811 | ((force_subclients[3] & 0x07) << 4)); | |
812 | } | |
813 | ||
814 | val = w83791d_read(client, W83791D_REG_I2C_SUBADDR); | |
815 | if (!(val & 0x08)) { | |
816 | err = w83791d_create_subclient(adapter, client, | |
817 | val & 0x7, &data->lm75[0]); | |
818 | if (err < 0) | |
819 | goto error_sc_0; | |
820 | } | |
821 | if (!(val & 0x80)) { | |
822 | if ((data->lm75[0] != NULL) && | |
823 | ((val & 0x7) == ((val >> 4) & 0x7))) { | |
824 | dev_err(&client->dev, | |
825 | "duplicate addresses 0x%x, " | |
826 | "use force_subclient\n", | |
827 | data->lm75[0]->addr); | |
828 | err = -ENODEV; | |
829 | goto error_sc_1; | |
830 | } | |
831 | err = w83791d_create_subclient(adapter, client, | |
832 | (val >> 4) & 0x7, &data->lm75[1]); | |
833 | if (err < 0) | |
834 | goto error_sc_1; | |
835 | } | |
836 | ||
837 | return 0; | |
838 | ||
839 | /* Undo inits in case of errors */ | |
840 | ||
841 | error_sc_1: | |
842 | if (data->lm75[0] != NULL) { | |
843 | i2c_detach_client(data->lm75[0]); | |
844 | kfree(data->lm75[0]); | |
845 | } | |
846 | error_sc_0: | |
847 | return err; | |
848 | } | |
849 | ||
850 | ||
851 | static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind) | |
852 | { | |
853 | struct i2c_client *client; | |
854 | struct device *dev; | |
855 | struct w83791d_data *data; | |
856 | int i, val1, val2; | |
857 | int err = 0; | |
858 | const char *client_name = ""; | |
859 | ||
860 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
861 | goto error0; | |
862 | } | |
863 | ||
864 | /* OK. For now, we presume we have a valid client. We now create the | |
865 | client structure, even though we cannot fill it completely yet. | |
866 | But it allows us to access w83791d_{read,write}_value. */ | |
867 | if (!(data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL))) { | |
868 | err = -ENOMEM; | |
869 | goto error0; | |
870 | } | |
871 | ||
872 | client = &data->client; | |
873 | dev = &client->dev; | |
874 | i2c_set_clientdata(client, data); | |
875 | client->addr = address; | |
876 | client->adapter = adapter; | |
877 | client->driver = &w83791d_driver; | |
878 | mutex_init(&data->update_lock); | |
879 | ||
880 | /* Now, we do the remaining detection. */ | |
881 | ||
882 | /* The w83791d may be stuck in some other bank than bank 0. This may | |
883 | make reading other information impossible. Specify a force=... | |
884 | parameter, and the Winbond will be reset to the right bank. */ | |
885 | if (kind < 0) { | |
886 | if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80) { | |
887 | dev_dbg(dev, "Detection failed at step 1\n"); | |
888 | goto error1; | |
889 | } | |
890 | val1 = w83791d_read(client, W83791D_REG_BANK); | |
891 | val2 = w83791d_read(client, W83791D_REG_CHIPMAN); | |
892 | /* Check for Winbond ID if in bank 0 */ | |
893 | if (!(val1 & 0x07)) { | |
894 | /* yes it is Bank0 */ | |
895 | if (((!(val1 & 0x80)) && (val2 != 0xa3)) || | |
896 | ((val1 & 0x80) && (val2 != 0x5c))) { | |
897 | dev_dbg(dev, "Detection failed at step 2\n"); | |
898 | goto error1; | |
899 | } | |
900 | } | |
901 | /* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR | |
902 | should match */ | |
903 | if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address) { | |
904 | dev_dbg(dev, "Detection failed at step 3\n"); | |
905 | goto error1; | |
906 | } | |
907 | } | |
908 | ||
909 | /* We either have a force parameter or we have reason to | |
910 | believe it is a Winbond chip. Either way, we want bank 0 and | |
911 | Vendor ID high byte */ | |
912 | val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78; | |
913 | w83791d_write(client, W83791D_REG_BANK, val1 | 0x80); | |
914 | ||
915 | /* Verify it is a Winbond w83791d */ | |
916 | if (kind <= 0) { | |
917 | /* get vendor ID */ | |
918 | val2 = w83791d_read(client, W83791D_REG_CHIPMAN); | |
919 | if (val2 != 0x5c) { /* the vendor is NOT Winbond */ | |
920 | dev_dbg(dev, "Detection failed at step 4\n"); | |
921 | goto error1; | |
922 | } | |
923 | val1 = w83791d_read(client, W83791D_REG_WCHIPID); | |
924 | if (val1 == 0x71) { | |
925 | kind = w83791d; | |
926 | } else { | |
927 | if (kind == 0) | |
928 | dev_warn(dev, | |
929 | "w83791d: Ignoring 'force' parameter " | |
930 | "for unknown chip at adapter %d, " | |
931 | "address 0x%02x\n", | |
932 | i2c_adapter_id(adapter), address); | |
933 | goto error1; | |
934 | } | |
935 | } | |
936 | ||
937 | if (kind == w83791d) { | |
938 | client_name = "w83791d"; | |
939 | } else { | |
940 | dev_err(dev, "w83791d: Internal error: unknown kind (%d)?!?", | |
941 | kind); | |
942 | goto error1; | |
943 | } | |
944 | ||
945 | #ifdef DEBUG | |
946 | val1 = w83791d_read(client, W83791D_REG_DID_VID4); | |
947 | dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n", | |
948 | (val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1); | |
949 | #endif | |
950 | ||
951 | /* Fill in the remaining client fields and put into the global list */ | |
952 | strlcpy(client->name, client_name, I2C_NAME_SIZE); | |
953 | ||
954 | /* Tell the I2C layer a new client has arrived */ | |
955 | if ((err = i2c_attach_client(client))) | |
956 | goto error1; | |
957 | ||
958 | if ((err = w83791d_detect_subclients(adapter, address, kind, client))) | |
959 | goto error2; | |
960 | ||
961 | /* Initialize the chip */ | |
962 | w83791d_init_client(client); | |
963 | ||
964 | /* If the fan_div is changed, make sure there is a rational | |
965 | fan_min in place */ | |
966 | for (i = 0; i < NUMBER_OF_FANIN; i++) { | |
967 | data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]); | |
968 | } | |
969 | ||
970 | /* Register sysfs hooks */ | |
971 | data->class_dev = hwmon_device_register(dev); | |
972 | if (IS_ERR(data->class_dev)) { | |
973 | err = PTR_ERR(data->class_dev); | |
974 | goto error3; | |
975 | } | |
976 | ||
977 | for (i = 0; i < NUMBER_OF_VIN; i++) { | |
978 | device_create_file(dev, &sda_in_input[i].dev_attr); | |
979 | device_create_file(dev, &sda_in_min[i].dev_attr); | |
980 | device_create_file(dev, &sda_in_max[i].dev_attr); | |
981 | } | |
982 | ||
983 | for (i = 0; i < NUMBER_OF_FANIN; i++) { | |
984 | device_create_file(dev, &sda_fan_input[i].dev_attr); | |
985 | device_create_file(dev, &sda_fan_div[i].dev_attr); | |
986 | device_create_file(dev, &sda_fan_min[i].dev_attr); | |
987 | } | |
988 | ||
989 | for (i = 0; i < NUMBER_OF_TEMPIN; i++) { | |
990 | device_create_file(dev, &sda_temp_input[i].dev_attr); | |
991 | device_create_file(dev, &sda_temp_max[i].dev_attr); | |
992 | device_create_file(dev, &sda_temp_max_hyst[i].dev_attr); | |
993 | } | |
994 | ||
995 | device_create_file(dev, &dev_attr_alarms); | |
996 | ||
997 | for (i = 0; i < ARRAY_SIZE(sda_beep_ctrl); i++) { | |
998 | device_create_file(dev, &sda_beep_ctrl[i].dev_attr); | |
999 | } | |
1000 | ||
1001 | device_create_file(dev, &dev_attr_cpu0_vid); | |
1002 | device_create_file(dev, &dev_attr_vrm); | |
1003 | ||
1004 | return 0; | |
1005 | ||
1006 | error3: | |
1007 | if (data->lm75[0] != NULL) { | |
1008 | i2c_detach_client(data->lm75[0]); | |
1009 | kfree(data->lm75[0]); | |
1010 | } | |
1011 | if (data->lm75[1] != NULL) { | |
1012 | i2c_detach_client(data->lm75[1]); | |
1013 | kfree(data->lm75[1]); | |
1014 | } | |
1015 | error2: | |
1016 | i2c_detach_client(client); | |
1017 | error1: | |
1018 | kfree(data); | |
1019 | error0: | |
1020 | return err; | |
1021 | } | |
1022 | ||
1023 | static int w83791d_detach_client(struct i2c_client *client) | |
1024 | { | |
1025 | struct w83791d_data *data = i2c_get_clientdata(client); | |
1026 | int err; | |
1027 | ||
1028 | /* main client */ | |
1029 | if (data) | |
1030 | hwmon_device_unregister(data->class_dev); | |
1031 | ||
1032 | if ((err = i2c_detach_client(client))) | |
1033 | return err; | |
1034 | ||
1035 | /* main client */ | |
1036 | if (data) | |
1037 | kfree(data); | |
1038 | /* subclient */ | |
1039 | else | |
1040 | kfree(client); | |
1041 | ||
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | static void w83791d_init_client(struct i2c_client *client) | |
1046 | { | |
1047 | struct w83791d_data *data = i2c_get_clientdata(client); | |
1048 | u8 tmp; | |
1049 | u8 old_beep; | |
1050 | ||
1051 | /* The difference between reset and init is that reset | |
1052 | does a hard reset of the chip via index 0x40, bit 7, | |
1053 | but init simply forces certain registers to have "sane" | |
1054 | values. The hope is that the BIOS has done the right | |
1055 | thing (which is why the default is reset=0, init=0), | |
1056 | but if not, reset is the hard hammer and init | |
1057 | is the soft mallet both of which are trying to whack | |
1058 | things into place... | |
1059 | NOTE: The data sheet makes a distinction between | |
1060 | "power on defaults" and "reset by MR". As far as I can tell, | |
1061 | the hard reset puts everything into a power-on state so I'm | |
1062 | not sure what "reset by MR" means or how it can happen. | |
1063 | */ | |
1064 | if (reset || init) { | |
1065 | /* keep some BIOS settings when we... */ | |
1066 | old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG); | |
1067 | ||
1068 | if (reset) { | |
1069 | /* ... reset the chip and ... */ | |
1070 | w83791d_write(client, W83791D_REG_CONFIG, 0x80); | |
1071 | } | |
1072 | ||
1073 | /* ... disable power-on abnormal beep */ | |
1074 | w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80); | |
1075 | ||
1076 | /* disable the global beep (not done by hard reset) */ | |
1077 | tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]); | |
1078 | w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef); | |
1079 | ||
1080 | if (init) { | |
1081 | /* Make sure monitoring is turned on for add-ons */ | |
1082 | tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG); | |
1083 | if (tmp & 1) { | |
1084 | w83791d_write(client, W83791D_REG_TEMP2_CONFIG, | |
1085 | tmp & 0xfe); | |
1086 | } | |
1087 | ||
1088 | tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG); | |
1089 | if (tmp & 1) { | |
1090 | w83791d_write(client, W83791D_REG_TEMP3_CONFIG, | |
1091 | tmp & 0xfe); | |
1092 | } | |
1093 | ||
1094 | /* Start monitoring */ | |
1095 | tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7; | |
1096 | w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01); | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | data->vrm = vid_which_vrm(); | |
1101 | } | |
1102 | ||
1103 | static struct w83791d_data *w83791d_update_device(struct device *dev) | |
1104 | { | |
1105 | struct i2c_client *client = to_i2c_client(dev); | |
1106 | struct w83791d_data *data = i2c_get_clientdata(client); | |
1107 | int i, j; | |
1108 | u8 reg_array_tmp[3]; | |
1109 | ||
1110 | mutex_lock(&data->update_lock); | |
1111 | ||
1112 | if (time_after(jiffies, data->last_updated + (HZ * 3)) | |
1113 | || !data->valid) { | |
1114 | dev_dbg(dev, "Starting w83791d device update\n"); | |
1115 | ||
1116 | /* Update the voltages measured value and limits */ | |
1117 | for (i = 0; i < NUMBER_OF_VIN; i++) { | |
1118 | data->in[i] = w83791d_read(client, | |
1119 | W83791D_REG_IN[i]); | |
1120 | data->in_max[i] = w83791d_read(client, | |
1121 | W83791D_REG_IN_MAX[i]); | |
1122 | data->in_min[i] = w83791d_read(client, | |
1123 | W83791D_REG_IN_MIN[i]); | |
1124 | } | |
1125 | ||
1126 | /* Update the fan counts and limits */ | |
1127 | for (i = 0; i < NUMBER_OF_FANIN; i++) { | |
1128 | /* Update the Fan measured value and limits */ | |
1129 | data->fan[i] = w83791d_read(client, | |
1130 | W83791D_REG_FAN[i]); | |
1131 | data->fan_min[i] = w83791d_read(client, | |
1132 | W83791D_REG_FAN_MIN[i]); | |
1133 | } | |
1134 | ||
1135 | /* Update the fan divisor */ | |
1136 | for (i = 0; i < 3; i++) { | |
1137 | reg_array_tmp[i] = w83791d_read(client, | |
1138 | W83791D_REG_FAN_DIV[i]); | |
1139 | } | |
1140 | data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03; | |
1141 | data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03; | |
1142 | data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03; | |
1143 | data->fan_div[3] = reg_array_tmp[2] & 0x07; | |
1144 | data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07; | |
1145 | ||
1146 | /* Update the first temperature sensor */ | |
1147 | for (i = 0; i < 3; i++) { | |
1148 | data->temp1[i] = w83791d_read(client, | |
1149 | W83791D_REG_TEMP1[i]); | |
1150 | } | |
1151 | ||
1152 | /* Update the rest of the temperature sensors */ | |
1153 | for (i = 0; i < 2; i++) { | |
1154 | for (j = 0; j < 3; j++) { | |
1155 | data->temp_add[i][j] = | |
1156 | (w83791d_read(client, | |
1157 | W83791D_REG_TEMP_ADD[i][j * 2]) << 8) | | |
1158 | w83791d_read(client, | |
1159 | W83791D_REG_TEMP_ADD[i][j * 2 + 1]); | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | /* Update the realtime status */ | |
1164 | data->alarms = | |
1165 | w83791d_read(client, W83791D_REG_ALARM1) + | |
1166 | (w83791d_read(client, W83791D_REG_ALARM2) << 8) + | |
1167 | (w83791d_read(client, W83791D_REG_ALARM3) << 16); | |
1168 | ||
1169 | /* Update the beep configuration information */ | |
1170 | data->beep_mask = | |
1171 | w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) + | |
1172 | (w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) + | |
1173 | (w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16); | |
1174 | ||
1175 | data->beep_enable = | |
1176 | (data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01; | |
1177 | ||
1178 | /* Update the cpu voltage information */ | |
1179 | i = w83791d_read(client, W83791D_REG_VID_FANDIV); | |
1180 | data->vid = i & 0x0f; | |
1181 | data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01) | |
1182 | << 4; | |
1183 | ||
1184 | data->last_updated = jiffies; | |
1185 | data->valid = 1; | |
1186 | } | |
1187 | ||
1188 | mutex_unlock(&data->update_lock); | |
1189 | ||
1190 | #ifdef DEBUG | |
1191 | w83791d_print_debug(data, dev); | |
1192 | #endif | |
1193 | ||
1194 | return data; | |
1195 | } | |
1196 | ||
1197 | #ifdef DEBUG | |
1198 | static void w83791d_print_debug(struct w83791d_data *data, struct device *dev) | |
1199 | { | |
1200 | int i = 0, j = 0; | |
1201 | ||
1202 | dev_dbg(dev, "======Start of w83791d debug values======\n"); | |
1203 | dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN); | |
1204 | for (i = 0; i < NUMBER_OF_VIN; i++) { | |
1205 | dev_dbg(dev, "vin[%d] is: 0x%02x\n", i, data->in[i]); | |
1206 | dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]); | |
1207 | dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]); | |
1208 | } | |
1209 | dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN); | |
1210 | for (i = 0; i < NUMBER_OF_FANIN; i++) { | |
1211 | dev_dbg(dev, "fan[%d] is: 0x%02x\n", i, data->fan[i]); | |
1212 | dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]); | |
1213 | dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]); | |
1214 | } | |
1215 | ||
1216 | /* temperature math is signed, but only print out the | |
1217 | bits that matter */ | |
1218 | dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN); | |
1219 | for (i = 0; i < 3; i++) { | |
1220 | dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]); | |
1221 | } | |
1222 | for (i = 0; i < 2; i++) { | |
1223 | for (j = 0; j < 3; j++) { | |
1224 | dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j, | |
1225 | (u16) data->temp_add[i][j]); | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | dev_dbg(dev, "Misc Information: ===>\n"); | |
1230 | dev_dbg(dev, "alarm is: 0x%08x\n", data->alarms); | |
1231 | dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask); | |
1232 | dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable); | |
1233 | dev_dbg(dev, "vid is: 0x%02x\n", data->vid); | |
1234 | dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm); | |
1235 | dev_dbg(dev, "=======End of w83791d debug values========\n"); | |
1236 | dev_dbg(dev, "\n"); | |
1237 | } | |
1238 | #endif | |
1239 | ||
1240 | static int __init sensors_w83791d_init(void) | |
1241 | { | |
1242 | return i2c_add_driver(&w83791d_driver); | |
1243 | } | |
1244 | ||
1245 | static void __exit sensors_w83791d_exit(void) | |
1246 | { | |
1247 | i2c_del_driver(&w83791d_driver); | |
1248 | } | |
1249 | ||
1250 | MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>"); | |
1251 | MODULE_DESCRIPTION("W83791D driver"); | |
1252 | MODULE_LICENSE("GPL"); | |
1253 | ||
1254 | module_init(sensors_w83791d_init); | |
1255 | module_exit(sensors_w83791d_exit); |