Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware | |
3 | * monitoring | |
4 | * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and | |
5 | * Kyosti Malkki <kmalkki@cc.hut.fi> | |
6 | * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and | |
7c81c60f | 7 | * Jean Delvare <jdelvare@suse.de> |
1da177e4 LT |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | * | |
23 | * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare | |
24 | * and advice of Greg Kroah-Hartman. | |
25 | * | |
26 | * Notes about the port: | |
27 | * Release 0x00 of the GL518SM chipset doesn't support reading of in0, | |
28 | * in1 nor in2. The original driver had an ugly workaround to get them | |
29 | * anyway (changing limits and watching alarms trigger and wear off). | |
30 | * We did not keep that part of the original driver in the Linux 2.6 | |
31 | * version, since it was making the driver significantly more complex | |
32 | * with no real benefit. | |
1da177e4 LT |
33 | */ |
34 | ||
1da177e4 LT |
35 | #include <linux/module.h> |
36 | #include <linux/init.h> | |
37 | #include <linux/slab.h> | |
38 | #include <linux/jiffies.h> | |
39 | #include <linux/i2c.h> | |
943b0830 | 40 | #include <linux/hwmon.h> |
28292e79 | 41 | #include <linux/hwmon-sysfs.h> |
943b0830 | 42 | #include <linux/err.h> |
9a61bf63 | 43 | #include <linux/mutex.h> |
87808be4 | 44 | #include <linux/sysfs.h> |
1da177e4 LT |
45 | |
46 | /* Addresses to scan */ | |
25e9c86d | 47 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
1da177e4 | 48 | |
e5e9f44c | 49 | enum chips { gl518sm_r00, gl518sm_r80 }; |
1da177e4 LT |
50 | |
51 | /* Many GL518 constants specified below */ | |
52 | ||
53 | /* The GL518 registers */ | |
54 | #define GL518_REG_CHIP_ID 0x00 | |
55 | #define GL518_REG_REVISION 0x01 | |
56 | #define GL518_REG_VENDOR_ID 0x02 | |
57 | #define GL518_REG_CONF 0x03 | |
58 | #define GL518_REG_TEMP_IN 0x04 | |
59 | #define GL518_REG_TEMP_MAX 0x05 | |
60 | #define GL518_REG_TEMP_HYST 0x06 | |
61 | #define GL518_REG_FAN_COUNT 0x07 | |
62 | #define GL518_REG_FAN_LIMIT 0x08 | |
63 | #define GL518_REG_VIN1_LIMIT 0x09 | |
64 | #define GL518_REG_VIN2_LIMIT 0x0a | |
65 | #define GL518_REG_VIN3_LIMIT 0x0b | |
66 | #define GL518_REG_VDD_LIMIT 0x0c | |
67 | #define GL518_REG_VIN3 0x0d | |
68 | #define GL518_REG_MISC 0x0f | |
69 | #define GL518_REG_ALARM 0x10 | |
70 | #define GL518_REG_MASK 0x11 | |
71 | #define GL518_REG_INT 0x12 | |
72 | #define GL518_REG_VIN2 0x13 | |
73 | #define GL518_REG_VIN1 0x14 | |
74 | #define GL518_REG_VDD 0x15 | |
75 | ||
76 | ||
77 | /* | |
78 | * Conversions. Rounding and limit checking is only done on the TO_REG | |
79 | * variants. Note that you should be a bit careful with which arguments | |
80 | * these macros are called: arguments may be evaluated more than once. | |
81 | * Fixing this is just not worth it. | |
82 | */ | |
83 | ||
84 | #define RAW_FROM_REG(val) val | |
85 | ||
228f8e0c GR |
86 | #define BOOL_FROM_REG(val) ((val) ? 0 : 1) |
87 | #define BOOL_TO_REG(val) ((val) ? 0 : 1) | |
1da177e4 | 88 | |
f80e868c GR |
89 | #define TEMP_CLAMP(val) clamp_val(val, -119000, 136000) |
90 | #define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 119) | |
1da177e4 LT |
91 | #define TEMP_FROM_REG(val) (((val) - 119) * 1000) |
92 | ||
93 | static inline u8 FAN_TO_REG(long rpm, int div) | |
94 | { | |
95 | long rpmdiv; | |
96 | if (rpm == 0) | |
97 | return 0; | |
2a844c14 GR |
98 | rpmdiv = clamp_val(rpm, 1, 960000) * div; |
99 | return clamp_val((480000 + rpmdiv / 2) / rpmdiv, 1, 255); | |
1da177e4 | 100 | } |
228f8e0c | 101 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) * (div)))) |
1da177e4 | 102 | |
f80e868c GR |
103 | #define IN_CLAMP(val) clamp_val(val, 0, 255 * 19) |
104 | #define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19) | |
228f8e0c | 105 | #define IN_FROM_REG(val) ((val) * 19) |
1da177e4 | 106 | |
f80e868c GR |
107 | #define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4) |
108 | #define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95) | |
109 | #define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4) | |
1da177e4 | 110 | |
1da177e4 LT |
111 | #define DIV_FROM_REG(val) (1 << (val)) |
112 | ||
113 | #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) | |
114 | #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) | |
115 | ||
116 | /* Each client has this additional data */ | |
117 | struct gl518_data { | |
18faf5b9 AL |
118 | struct i2c_client *client; |
119 | const struct attribute_group *groups[3]; | |
1da177e4 LT |
120 | enum chips type; |
121 | ||
9a61bf63 | 122 | struct mutex update_lock; |
1da177e4 LT |
123 | char valid; /* !=0 if following fields are valid */ |
124 | unsigned long last_updated; /* In jiffies */ | |
125 | ||
126 | u8 voltage_in[4]; /* Register values; [0] = VDD */ | |
127 | u8 voltage_min[4]; /* Register values; [0] = VDD */ | |
128 | u8 voltage_max[4]; /* Register values; [0] = VDD */ | |
1da177e4 LT |
129 | u8 fan_in[2]; |
130 | u8 fan_min[2]; | |
131 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
132 | u8 fan_auto1; /* Boolean */ | |
133 | u8 temp_in; /* Register values */ | |
134 | u8 temp_max; /* Register values */ | |
135 | u8 temp_hyst; /* Register values */ | |
136 | u8 alarms; /* Register value */ | |
a5955ed2 | 137 | u8 alarm_mask; |
1da177e4 LT |
138 | u8 beep_mask; /* Register value */ |
139 | u8 beep_enable; /* Boolean */ | |
140 | }; | |
141 | ||
d4a972a3 AL |
142 | /* |
143 | * Registers 0x07 to 0x0c are word-sized, others are byte-sized | |
144 | * GL518 uses a high-byte first convention, which is exactly opposite to | |
145 | * the SMBus standard. | |
146 | */ | |
147 | static int gl518_read_value(struct i2c_client *client, u8 reg) | |
148 | { | |
149 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
150 | return i2c_smbus_read_word_swapped(client, reg); | |
151 | else | |
152 | return i2c_smbus_read_byte_data(client, reg); | |
153 | } | |
1da177e4 | 154 | |
d4a972a3 AL |
155 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) |
156 | { | |
157 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
158 | return i2c_smbus_write_word_swapped(client, reg, value); | |
159 | else | |
160 | return i2c_smbus_write_byte_data(client, reg, value); | |
161 | } | |
95d80e7c | 162 | |
d4a972a3 AL |
163 | static struct gl518_data *gl518_update_device(struct device *dev) |
164 | { | |
18faf5b9 AL |
165 | struct gl518_data *data = dev_get_drvdata(dev); |
166 | struct i2c_client *client = data->client; | |
d4a972a3 AL |
167 | int val; |
168 | ||
169 | mutex_lock(&data->update_lock); | |
170 | ||
171 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
172 | || !data->valid) { | |
173 | dev_dbg(&client->dev, "Starting gl518 update\n"); | |
174 | ||
175 | data->alarms = gl518_read_value(client, GL518_REG_INT); | |
176 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
177 | ||
178 | val = gl518_read_value(client, GL518_REG_VDD_LIMIT); | |
179 | data->voltage_min[0] = val & 0xff; | |
180 | data->voltage_max[0] = (val >> 8) & 0xff; | |
181 | val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); | |
182 | data->voltage_min[1] = val & 0xff; | |
183 | data->voltage_max[1] = (val >> 8) & 0xff; | |
184 | val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); | |
185 | data->voltage_min[2] = val & 0xff; | |
186 | data->voltage_max[2] = (val >> 8) & 0xff; | |
187 | val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); | |
188 | data->voltage_min[3] = val & 0xff; | |
189 | data->voltage_max[3] = (val >> 8) & 0xff; | |
190 | ||
191 | val = gl518_read_value(client, GL518_REG_FAN_COUNT); | |
192 | data->fan_in[0] = (val >> 8) & 0xff; | |
193 | data->fan_in[1] = val & 0xff; | |
194 | ||
195 | val = gl518_read_value(client, GL518_REG_FAN_LIMIT); | |
196 | data->fan_min[0] = (val >> 8) & 0xff; | |
197 | data->fan_min[1] = val & 0xff; | |
198 | ||
199 | data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); | |
200 | data->temp_max = | |
201 | gl518_read_value(client, GL518_REG_TEMP_MAX); | |
202 | data->temp_hyst = | |
203 | gl518_read_value(client, GL518_REG_TEMP_HYST); | |
204 | ||
205 | val = gl518_read_value(client, GL518_REG_MISC); | |
206 | data->fan_div[0] = (val >> 6) & 0x03; | |
207 | data->fan_div[1] = (val >> 4) & 0x03; | |
208 | data->fan_auto1 = (val >> 3) & 0x01; | |
209 | ||
210 | data->alarms &= data->alarm_mask; | |
211 | ||
212 | val = gl518_read_value(client, GL518_REG_CONF); | |
213 | data->beep_enable = (val >> 2) & 1; | |
214 | ||
215 | if (data->type != gl518sm_r00) { | |
216 | data->voltage_in[0] = | |
217 | gl518_read_value(client, GL518_REG_VDD); | |
218 | data->voltage_in[1] = | |
219 | gl518_read_value(client, GL518_REG_VIN1); | |
220 | data->voltage_in[2] = | |
221 | gl518_read_value(client, GL518_REG_VIN2); | |
222 | } | |
223 | data->voltage_in[3] = | |
224 | gl518_read_value(client, GL518_REG_VIN3); | |
225 | ||
226 | data->last_updated = jiffies; | |
227 | data->valid = 1; | |
228 | } | |
229 | ||
230 | mutex_unlock(&data->update_lock); | |
231 | ||
232 | return data; | |
233 | } | |
1da177e4 LT |
234 | |
235 | /* | |
236 | * Sysfs stuff | |
237 | */ | |
238 | ||
239 | #define show(type, suffix, value) \ | |
228f8e0c GR |
240 | static ssize_t show_##suffix(struct device *dev, \ |
241 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
242 | { \ |
243 | struct gl518_data *data = gl518_update_device(dev); \ | |
244 | return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ | |
245 | } | |
246 | ||
1da177e4 LT |
247 | show(TEMP, temp_input1, temp_in); |
248 | show(TEMP, temp_max1, temp_max); | |
249 | show(TEMP, temp_hyst1, temp_hyst); | |
250 | show(BOOL, fan_auto1, fan_auto1); | |
1da177e4 LT |
251 | show(VDD, in_input0, voltage_in[0]); |
252 | show(IN, in_input1, voltage_in[1]); | |
253 | show(IN, in_input2, voltage_in[2]); | |
254 | show(IN, in_input3, voltage_in[3]); | |
255 | show(VDD, in_min0, voltage_min[0]); | |
256 | show(IN, in_min1, voltage_min[1]); | |
257 | show(IN, in_min2, voltage_min[2]); | |
258 | show(IN, in_min3, voltage_min[3]); | |
259 | show(VDD, in_max0, voltage_max[0]); | |
260 | show(IN, in_max1, voltage_max[1]); | |
261 | show(IN, in_max2, voltage_max[2]); | |
262 | show(IN, in_max3, voltage_max[3]); | |
263 | show(RAW, alarms, alarms); | |
264 | show(BOOL, beep_enable, beep_enable); | |
265 | show(BEEP_MASK, beep_mask, beep_mask); | |
266 | ||
8f3bcb36 | 267 | static ssize_t fan_input_show(struct device *dev, |
28292e79 JD |
268 | struct device_attribute *attr, char *buf) |
269 | { | |
270 | int nr = to_sensor_dev_attr(attr)->index; | |
271 | struct gl518_data *data = gl518_update_device(dev); | |
272 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr], | |
273 | DIV_FROM_REG(data->fan_div[nr]))); | |
274 | } | |
275 | ||
8f3bcb36 GR |
276 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
277 | char *buf) | |
28292e79 JD |
278 | { |
279 | int nr = to_sensor_dev_attr(attr)->index; | |
280 | struct gl518_data *data = gl518_update_device(dev); | |
281 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
282 | DIV_FROM_REG(data->fan_div[nr]))); | |
283 | } | |
284 | ||
8f3bcb36 GR |
285 | static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, |
286 | char *buf) | |
28292e79 JD |
287 | { |
288 | int nr = to_sensor_dev_attr(attr)->index; | |
289 | struct gl518_data *data = gl518_update_device(dev); | |
290 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
291 | } | |
292 | ||
1da177e4 | 293 | #define set(type, suffix, value, reg) \ |
228f8e0c GR |
294 | static ssize_t set_##suffix(struct device *dev, \ |
295 | struct device_attribute *attr, \ | |
296 | const char *buf, size_t count) \ | |
1da177e4 | 297 | { \ |
18faf5b9 AL |
298 | struct gl518_data *data = dev_get_drvdata(dev); \ |
299 | struct i2c_client *client = data->client; \ | |
228f8e0c GR |
300 | long val; \ |
301 | int err = kstrtol(buf, 10, &val); \ | |
302 | if (err) \ | |
303 | return err; \ | |
1da177e4 | 304 | \ |
9a61bf63 | 305 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
306 | data->value = type##_TO_REG(val); \ |
307 | gl518_write_value(client, reg, data->value); \ | |
9a61bf63 | 308 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
309 | return count; \ |
310 | } | |
311 | ||
312 | #define set_bits(type, suffix, value, reg, mask, shift) \ | |
228f8e0c GR |
313 | static ssize_t set_##suffix(struct device *dev, \ |
314 | struct device_attribute *attr, \ | |
315 | const char *buf, size_t count) \ | |
1da177e4 | 316 | { \ |
18faf5b9 AL |
317 | struct gl518_data *data = dev_get_drvdata(dev); \ |
318 | struct i2c_client *client = data->client; \ | |
1da177e4 | 319 | int regvalue; \ |
228f8e0c GR |
320 | unsigned long val; \ |
321 | int err = kstrtoul(buf, 10, &val); \ | |
322 | if (err) \ | |
323 | return err; \ | |
1da177e4 | 324 | \ |
9a61bf63 | 325 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
326 | regvalue = gl518_read_value(client, reg); \ |
327 | data->value = type##_TO_REG(val); \ | |
328 | regvalue = (regvalue & ~mask) | (data->value << shift); \ | |
329 | gl518_write_value(client, reg, regvalue); \ | |
9a61bf63 | 330 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
331 | return count; \ |
332 | } | |
333 | ||
334 | #define set_low(type, suffix, value, reg) \ | |
335 | set_bits(type, suffix, value, reg, 0x00ff, 0) | |
336 | #define set_high(type, suffix, value, reg) \ | |
337 | set_bits(type, suffix, value, reg, 0xff00, 8) | |
338 | ||
339 | set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); | |
340 | set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); | |
341 | set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); | |
1da177e4 LT |
342 | set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); |
343 | set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); | |
344 | set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); | |
345 | set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); | |
346 | set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); | |
347 | set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); | |
348 | set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); | |
349 | set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); | |
350 | set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); | |
351 | set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); | |
352 | ||
8f3bcb36 GR |
353 | static ssize_t fan_min_store(struct device *dev, |
354 | struct device_attribute *attr, const char *buf, | |
355 | size_t count) | |
1da177e4 | 356 | { |
18faf5b9 AL |
357 | struct gl518_data *data = dev_get_drvdata(dev); |
358 | struct i2c_client *client = data->client; | |
28292e79 | 359 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 | 360 | int regvalue; |
228f8e0c GR |
361 | unsigned long val; |
362 | int err; | |
363 | ||
364 | err = kstrtoul(buf, 10, &val); | |
365 | if (err) | |
366 | return err; | |
1da177e4 | 367 | |
9a61bf63 | 368 | mutex_lock(&data->update_lock); |
1da177e4 | 369 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
28292e79 JD |
370 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
371 | regvalue = (regvalue & (0xff << (8 * nr))) | |
372 | | (data->fan_min[nr] << (8 * (1 - nr))); | |
1da177e4 LT |
373 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
374 | ||
375 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
28292e79 JD |
376 | if (data->fan_min[nr] == 0) |
377 | data->alarm_mask &= ~(0x20 << nr); | |
1da177e4 | 378 | else |
28292e79 | 379 | data->alarm_mask |= (0x20 << nr); |
1da177e4 LT |
380 | data->beep_mask &= data->alarm_mask; |
381 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
382 | ||
9a61bf63 | 383 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
384 | return count; |
385 | } | |
386 | ||
8f3bcb36 GR |
387 | static ssize_t fan_div_store(struct device *dev, |
388 | struct device_attribute *attr, const char *buf, | |
389 | size_t count) | |
1da177e4 | 390 | { |
18faf5b9 AL |
391 | struct gl518_data *data = dev_get_drvdata(dev); |
392 | struct i2c_client *client = data->client; | |
28292e79 | 393 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 | 394 | int regvalue; |
228f8e0c GR |
395 | unsigned long val; |
396 | int err; | |
397 | ||
398 | err = kstrtoul(buf, 10, &val); | |
399 | if (err) | |
400 | return err; | |
1da177e4 | 401 | |
21df67b1 | 402 | switch (val) { |
228f8e0c GR |
403 | case 1: |
404 | val = 0; | |
405 | break; | |
406 | case 2: | |
407 | val = 1; | |
408 | break; | |
409 | case 4: | |
410 | val = 2; | |
411 | break; | |
412 | case 8: | |
413 | val = 3; | |
414 | break; | |
21df67b1 | 415 | default: |
b55f3757 GR |
416 | dev_err(dev, |
417 | "Invalid fan clock divider %lu, choose one of 1, 2, 4 or 8\n", | |
418 | val); | |
21df67b1 JD |
419 | return -EINVAL; |
420 | } | |
421 | ||
9a61bf63 | 422 | mutex_lock(&data->update_lock); |
28292e79 | 423 | regvalue = gl518_read_value(client, GL518_REG_MISC); |
21df67b1 | 424 | data->fan_div[nr] = val; |
28292e79 JD |
425 | regvalue = (regvalue & ~(0xc0 >> (2 * nr))) |
426 | | (data->fan_div[nr] << (6 - 2 * nr)); | |
427 | gl518_write_value(client, GL518_REG_MISC, regvalue); | |
9a61bf63 | 428 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
429 | return count; |
430 | } | |
431 | ||
8f3bcb36 GR |
432 | static DEVICE_ATTR(temp1_input, 0444, show_temp_input1, NULL); |
433 | static DEVICE_ATTR(temp1_max, 0644, show_temp_max1, set_temp_max1); | |
434 | static DEVICE_ATTR(temp1_max_hyst, 0644, | |
435 | show_temp_hyst1, set_temp_hyst1); | |
436 | static DEVICE_ATTR(fan1_auto, 0644, show_fan_auto1, set_fan_auto1); | |
437 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); | |
438 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); | |
439 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); | |
440 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); | |
441 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); | |
442 | static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); | |
443 | static DEVICE_ATTR(in0_input, 0444, show_in_input0, NULL); | |
444 | static DEVICE_ATTR(in1_input, 0444, show_in_input1, NULL); | |
445 | static DEVICE_ATTR(in2_input, 0444, show_in_input2, NULL); | |
446 | static DEVICE_ATTR(in3_input, 0444, show_in_input3, NULL); | |
447 | static DEVICE_ATTR(in0_min, 0644, show_in_min0, set_in_min0); | |
448 | static DEVICE_ATTR(in1_min, 0644, show_in_min1, set_in_min1); | |
449 | static DEVICE_ATTR(in2_min, 0644, show_in_min2, set_in_min2); | |
450 | static DEVICE_ATTR(in3_min, 0644, show_in_min3, set_in_min3); | |
451 | static DEVICE_ATTR(in0_max, 0644, show_in_max0, set_in_max0); | |
452 | static DEVICE_ATTR(in1_max, 0644, show_in_max1, set_in_max1); | |
453 | static DEVICE_ATTR(in2_max, 0644, show_in_max2, set_in_max2); | |
454 | static DEVICE_ATTR(in3_max, 0644, show_in_max3, set_in_max3); | |
455 | static DEVICE_ATTR(alarms, 0444, show_alarms, NULL); | |
456 | static DEVICE_ATTR(beep_enable, 0644, | |
457 | show_beep_enable, set_beep_enable); | |
458 | static DEVICE_ATTR(beep_mask, 0644, | |
459 | show_beep_mask, set_beep_mask); | |
460 | ||
461 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, | |
da6848da JD |
462 | char *buf) |
463 | { | |
464 | int bitnr = to_sensor_dev_attr(attr)->index; | |
465 | struct gl518_data *data = gl518_update_device(dev); | |
466 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
467 | } | |
468 | ||
8f3bcb36 GR |
469 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
470 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); | |
471 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); | |
472 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); | |
473 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); | |
474 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5); | |
475 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6); | |
da6848da | 476 | |
8f3bcb36 GR |
477 | static ssize_t beep_show(struct device *dev, struct device_attribute *attr, |
478 | char *buf) | |
da6848da JD |
479 | { |
480 | int bitnr = to_sensor_dev_attr(attr)->index; | |
481 | struct gl518_data *data = gl518_update_device(dev); | |
482 | return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); | |
483 | } | |
484 | ||
8f3bcb36 GR |
485 | static ssize_t beep_store(struct device *dev, struct device_attribute *attr, |
486 | const char *buf, size_t count) | |
da6848da | 487 | { |
18faf5b9 AL |
488 | struct gl518_data *data = dev_get_drvdata(dev); |
489 | struct i2c_client *client = data->client; | |
da6848da JD |
490 | int bitnr = to_sensor_dev_attr(attr)->index; |
491 | unsigned long bit; | |
228f8e0c GR |
492 | int err; |
493 | ||
494 | err = kstrtoul(buf, 10, &bit); | |
495 | if (err) | |
496 | return err; | |
da6848da | 497 | |
da6848da JD |
498 | if (bit & ~1) |
499 | return -EINVAL; | |
500 | ||
501 | mutex_lock(&data->update_lock); | |
502 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
503 | if (bit) | |
504 | data->beep_mask |= (1 << bitnr); | |
505 | else | |
506 | data->beep_mask &= ~(1 << bitnr); | |
507 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
508 | mutex_unlock(&data->update_lock); | |
509 | return count; | |
510 | } | |
511 | ||
8f3bcb36 GR |
512 | static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0); |
513 | static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1); | |
514 | static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2); | |
515 | static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3); | |
516 | static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4); | |
517 | static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5); | |
518 | static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6); | |
da6848da | 519 | |
87808be4 | 520 | static struct attribute *gl518_attributes[] = { |
87808be4 JD |
521 | &dev_attr_in3_input.attr, |
522 | &dev_attr_in0_min.attr, | |
523 | &dev_attr_in1_min.attr, | |
524 | &dev_attr_in2_min.attr, | |
525 | &dev_attr_in3_min.attr, | |
526 | &dev_attr_in0_max.attr, | |
527 | &dev_attr_in1_max.attr, | |
528 | &dev_attr_in2_max.attr, | |
529 | &dev_attr_in3_max.attr, | |
da6848da JD |
530 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
531 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
532 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
533 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
534 | &sensor_dev_attr_in0_beep.dev_attr.attr, | |
535 | &sensor_dev_attr_in1_beep.dev_attr.attr, | |
536 | &sensor_dev_attr_in2_beep.dev_attr.attr, | |
537 | &sensor_dev_attr_in3_beep.dev_attr.attr, | |
87808be4 JD |
538 | |
539 | &dev_attr_fan1_auto.attr, | |
28292e79 JD |
540 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
541 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
542 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
543 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
544 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
545 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
da6848da JD |
546 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
547 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
548 | &sensor_dev_attr_fan1_beep.dev_attr.attr, | |
549 | &sensor_dev_attr_fan2_beep.dev_attr.attr, | |
87808be4 JD |
550 | |
551 | &dev_attr_temp1_input.attr, | |
552 | &dev_attr_temp1_max.attr, | |
553 | &dev_attr_temp1_max_hyst.attr, | |
da6848da JD |
554 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
555 | &sensor_dev_attr_temp1_beep.dev_attr.attr, | |
87808be4 JD |
556 | |
557 | &dev_attr_alarms.attr, | |
558 | &dev_attr_beep_enable.attr, | |
559 | &dev_attr_beep_mask.attr, | |
560 | NULL | |
561 | }; | |
562 | ||
563 | static const struct attribute_group gl518_group = { | |
564 | .attrs = gl518_attributes, | |
565 | }; | |
566 | ||
5314f5c1 JD |
567 | static struct attribute *gl518_attributes_r80[] = { |
568 | &dev_attr_in0_input.attr, | |
569 | &dev_attr_in1_input.attr, | |
570 | &dev_attr_in2_input.attr, | |
571 | NULL | |
572 | }; | |
573 | ||
574 | static const struct attribute_group gl518_group_r80 = { | |
575 | .attrs = gl518_attributes_r80, | |
576 | }; | |
577 | ||
1da177e4 LT |
578 | /* |
579 | * Real code | |
580 | */ | |
581 | ||
95d80e7c | 582 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 583 | static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 584 | { |
95d80e7c | 585 | struct i2c_adapter *adapter = client->adapter; |
52df6440 | 586 | int rev; |
1da177e4 LT |
587 | |
588 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
589 | I2C_FUNC_SMBUS_WORD_DATA)) | |
95d80e7c | 590 | return -ENODEV; |
1da177e4 LT |
591 | |
592 | /* Now, we do the remaining detection. */ | |
52df6440 JD |
593 | if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80) |
594 | || (gl518_read_value(client, GL518_REG_CONF) & 0x80)) | |
595 | return -ENODEV; | |
1da177e4 LT |
596 | |
597 | /* Determine the chip type. */ | |
52df6440 JD |
598 | rev = gl518_read_value(client, GL518_REG_REVISION); |
599 | if (rev != 0x00 && rev != 0x80) | |
600 | return -ENODEV; | |
1da177e4 | 601 | |
95d80e7c | 602 | strlcpy(info->type, "gl518sm", I2C_NAME_SIZE); |
1da177e4 | 603 | |
95d80e7c JD |
604 | return 0; |
605 | } | |
606 | ||
d4a972a3 AL |
607 | /* |
608 | * Called when we have found a new GL518SM. | |
609 | * Note that we preserve D4:NoFan2 and D2:beep_enable. | |
610 | */ | |
611 | static void gl518_init_client(struct i2c_client *client) | |
612 | { | |
613 | /* Make sure we leave D7:Reset untouched */ | |
614 | u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; | |
615 | ||
616 | /* Comparator mode (D3=0), standby mode (D6=0) */ | |
617 | gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); | |
618 | ||
619 | /* Never interrupts */ | |
620 | gl518_write_value(client, GL518_REG_MASK, 0x00); | |
621 | ||
622 | /* Clear status register (D5=1), start (D6=1) */ | |
623 | gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); | |
624 | gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); | |
625 | } | |
626 | ||
95d80e7c JD |
627 | static int gl518_probe(struct i2c_client *client, |
628 | const struct i2c_device_id *id) | |
629 | { | |
18faf5b9 AL |
630 | struct device *dev = &client->dev; |
631 | struct device *hwmon_dev; | |
95d80e7c | 632 | struct gl518_data *data; |
18faf5b9 | 633 | int revision; |
95d80e7c | 634 | |
18faf5b9 | 635 | data = devm_kzalloc(dev, sizeof(struct gl518_data), GFP_KERNEL); |
bba636d0 GR |
636 | if (!data) |
637 | return -ENOMEM; | |
95d80e7c | 638 | |
18faf5b9 | 639 | data->client = client; |
95d80e7c JD |
640 | revision = gl518_read_value(client, GL518_REG_REVISION); |
641 | data->type = revision == 0x80 ? gl518sm_r80 : gl518sm_r00; | |
642 | mutex_init(&data->update_lock); | |
1da177e4 LT |
643 | |
644 | /* Initialize the GL518SM chip */ | |
645 | data->alarm_mask = 0xff; | |
a5955ed2 | 646 | gl518_init_client(client); |
1da177e4 | 647 | |
18faf5b9 AL |
648 | /* sysfs hooks */ |
649 | data->groups[0] = &gl518_group; | |
5314f5c1 | 650 | if (data->type == gl518sm_r80) |
18faf5b9 | 651 | data->groups[1] = &gl518_group_r80; |
943b0830 | 652 | |
18faf5b9 AL |
653 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
654 | data, data->groups); | |
655 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
1da177e4 LT |
656 | } |
657 | ||
d4a972a3 AL |
658 | static const struct i2c_device_id gl518_id[] = { |
659 | { "gl518sm", 0 }, | |
660 | { } | |
661 | }; | |
662 | MODULE_DEVICE_TABLE(i2c, gl518_id); | |
1da177e4 | 663 | |
d4a972a3 AL |
664 | static struct i2c_driver gl518_driver = { |
665 | .class = I2C_CLASS_HWMON, | |
666 | .driver = { | |
667 | .name = "gl518sm", | |
668 | }, | |
669 | .probe = gl518_probe, | |
d4a972a3 AL |
670 | .id_table = gl518_id, |
671 | .detect = gl518_detect, | |
672 | .address_list = normal_i2c, | |
673 | }; | |
1da177e4 | 674 | |
f0967eea | 675 | module_i2c_driver(gl518_driver); |
1da177e4 LT |
676 | |
677 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
678 | "Kyosti Malkki <kmalkki@cc.hut.fi> and " | |
679 | "Hong-Gunn Chew <hglinux@gunnet.org>"); | |
680 | MODULE_DESCRIPTION("GL518SM driver"); | |
681 | MODULE_LICENSE("GPL"); |