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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware | |
4 | * monitoring | |
5 | * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and | |
6 | * Kyosti Malkki <kmalkki@cc.hut.fi> | |
7 | * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and | |
7c81c60f | 8 | * Jean Delvare <jdelvare@suse.de> |
1da177e4 | 9 | * |
1da177e4 LT |
10 | * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare |
11 | * and advice of Greg Kroah-Hartman. | |
12 | * | |
13 | * Notes about the port: | |
14 | * Release 0x00 of the GL518SM chipset doesn't support reading of in0, | |
15 | * in1 nor in2. The original driver had an ugly workaround to get them | |
16 | * anyway (changing limits and watching alarms trigger and wear off). | |
17 | * We did not keep that part of the original driver in the Linux 2.6 | |
18 | * version, since it was making the driver significantly more complex | |
19 | * with no real benefit. | |
1da177e4 LT |
20 | */ |
21 | ||
1da177e4 LT |
22 | #include <linux/module.h> |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/jiffies.h> | |
26 | #include <linux/i2c.h> | |
943b0830 | 27 | #include <linux/hwmon.h> |
28292e79 | 28 | #include <linux/hwmon-sysfs.h> |
943b0830 | 29 | #include <linux/err.h> |
9a61bf63 | 30 | #include <linux/mutex.h> |
87808be4 | 31 | #include <linux/sysfs.h> |
1da177e4 LT |
32 | |
33 | /* Addresses to scan */ | |
25e9c86d | 34 | static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
1da177e4 | 35 | |
e5e9f44c | 36 | enum chips { gl518sm_r00, gl518sm_r80 }; |
1da177e4 LT |
37 | |
38 | /* Many GL518 constants specified below */ | |
39 | ||
40 | /* The GL518 registers */ | |
41 | #define GL518_REG_CHIP_ID 0x00 | |
42 | #define GL518_REG_REVISION 0x01 | |
43 | #define GL518_REG_VENDOR_ID 0x02 | |
44 | #define GL518_REG_CONF 0x03 | |
45 | #define GL518_REG_TEMP_IN 0x04 | |
46 | #define GL518_REG_TEMP_MAX 0x05 | |
47 | #define GL518_REG_TEMP_HYST 0x06 | |
48 | #define GL518_REG_FAN_COUNT 0x07 | |
49 | #define GL518_REG_FAN_LIMIT 0x08 | |
50 | #define GL518_REG_VIN1_LIMIT 0x09 | |
51 | #define GL518_REG_VIN2_LIMIT 0x0a | |
52 | #define GL518_REG_VIN3_LIMIT 0x0b | |
53 | #define GL518_REG_VDD_LIMIT 0x0c | |
54 | #define GL518_REG_VIN3 0x0d | |
55 | #define GL518_REG_MISC 0x0f | |
56 | #define GL518_REG_ALARM 0x10 | |
57 | #define GL518_REG_MASK 0x11 | |
58 | #define GL518_REG_INT 0x12 | |
59 | #define GL518_REG_VIN2 0x13 | |
60 | #define GL518_REG_VIN1 0x14 | |
61 | #define GL518_REG_VDD 0x15 | |
62 | ||
63 | ||
64 | /* | |
65 | * Conversions. Rounding and limit checking is only done on the TO_REG | |
66 | * variants. Note that you should be a bit careful with which arguments | |
67 | * these macros are called: arguments may be evaluated more than once. | |
68 | * Fixing this is just not worth it. | |
69 | */ | |
70 | ||
71 | #define RAW_FROM_REG(val) val | |
72 | ||
228f8e0c GR |
73 | #define BOOL_FROM_REG(val) ((val) ? 0 : 1) |
74 | #define BOOL_TO_REG(val) ((val) ? 0 : 1) | |
1da177e4 | 75 | |
f80e868c GR |
76 | #define TEMP_CLAMP(val) clamp_val(val, -119000, 136000) |
77 | #define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 119) | |
1da177e4 LT |
78 | #define TEMP_FROM_REG(val) (((val) - 119) * 1000) |
79 | ||
80 | static inline u8 FAN_TO_REG(long rpm, int div) | |
81 | { | |
82 | long rpmdiv; | |
83 | if (rpm == 0) | |
84 | return 0; | |
2a844c14 GR |
85 | rpmdiv = clamp_val(rpm, 1, 960000) * div; |
86 | return clamp_val((480000 + rpmdiv / 2) / rpmdiv, 1, 255); | |
1da177e4 | 87 | } |
228f8e0c | 88 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) * (div)))) |
1da177e4 | 89 | |
f80e868c GR |
90 | #define IN_CLAMP(val) clamp_val(val, 0, 255 * 19) |
91 | #define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19) | |
228f8e0c | 92 | #define IN_FROM_REG(val) ((val) * 19) |
1da177e4 | 93 | |
f80e868c GR |
94 | #define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4) |
95 | #define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95) | |
96 | #define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4) | |
1da177e4 | 97 | |
1da177e4 LT |
98 | #define DIV_FROM_REG(val) (1 << (val)) |
99 | ||
100 | #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) | |
101 | #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) | |
102 | ||
103 | /* Each client has this additional data */ | |
104 | struct gl518_data { | |
18faf5b9 AL |
105 | struct i2c_client *client; |
106 | const struct attribute_group *groups[3]; | |
1da177e4 LT |
107 | enum chips type; |
108 | ||
9a61bf63 | 109 | struct mutex update_lock; |
1da177e4 LT |
110 | char valid; /* !=0 if following fields are valid */ |
111 | unsigned long last_updated; /* In jiffies */ | |
112 | ||
113 | u8 voltage_in[4]; /* Register values; [0] = VDD */ | |
114 | u8 voltage_min[4]; /* Register values; [0] = VDD */ | |
115 | u8 voltage_max[4]; /* Register values; [0] = VDD */ | |
1da177e4 LT |
116 | u8 fan_in[2]; |
117 | u8 fan_min[2]; | |
118 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
119 | u8 fan_auto1; /* Boolean */ | |
120 | u8 temp_in; /* Register values */ | |
121 | u8 temp_max; /* Register values */ | |
122 | u8 temp_hyst; /* Register values */ | |
123 | u8 alarms; /* Register value */ | |
a5955ed2 | 124 | u8 alarm_mask; |
1da177e4 LT |
125 | u8 beep_mask; /* Register value */ |
126 | u8 beep_enable; /* Boolean */ | |
127 | }; | |
128 | ||
d4a972a3 AL |
129 | /* |
130 | * Registers 0x07 to 0x0c are word-sized, others are byte-sized | |
131 | * GL518 uses a high-byte first convention, which is exactly opposite to | |
132 | * the SMBus standard. | |
133 | */ | |
134 | static int gl518_read_value(struct i2c_client *client, u8 reg) | |
135 | { | |
136 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
137 | return i2c_smbus_read_word_swapped(client, reg); | |
138 | else | |
139 | return i2c_smbus_read_byte_data(client, reg); | |
140 | } | |
1da177e4 | 141 | |
d4a972a3 AL |
142 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) |
143 | { | |
144 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
145 | return i2c_smbus_write_word_swapped(client, reg, value); | |
146 | else | |
147 | return i2c_smbus_write_byte_data(client, reg, value); | |
148 | } | |
95d80e7c | 149 | |
d4a972a3 AL |
150 | static struct gl518_data *gl518_update_device(struct device *dev) |
151 | { | |
18faf5b9 AL |
152 | struct gl518_data *data = dev_get_drvdata(dev); |
153 | struct i2c_client *client = data->client; | |
d4a972a3 AL |
154 | int val; |
155 | ||
156 | mutex_lock(&data->update_lock); | |
157 | ||
158 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
159 | || !data->valid) { | |
160 | dev_dbg(&client->dev, "Starting gl518 update\n"); | |
161 | ||
162 | data->alarms = gl518_read_value(client, GL518_REG_INT); | |
163 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
164 | ||
165 | val = gl518_read_value(client, GL518_REG_VDD_LIMIT); | |
166 | data->voltage_min[0] = val & 0xff; | |
167 | data->voltage_max[0] = (val >> 8) & 0xff; | |
168 | val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); | |
169 | data->voltage_min[1] = val & 0xff; | |
170 | data->voltage_max[1] = (val >> 8) & 0xff; | |
171 | val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); | |
172 | data->voltage_min[2] = val & 0xff; | |
173 | data->voltage_max[2] = (val >> 8) & 0xff; | |
174 | val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); | |
175 | data->voltage_min[3] = val & 0xff; | |
176 | data->voltage_max[3] = (val >> 8) & 0xff; | |
177 | ||
178 | val = gl518_read_value(client, GL518_REG_FAN_COUNT); | |
179 | data->fan_in[0] = (val >> 8) & 0xff; | |
180 | data->fan_in[1] = val & 0xff; | |
181 | ||
182 | val = gl518_read_value(client, GL518_REG_FAN_LIMIT); | |
183 | data->fan_min[0] = (val >> 8) & 0xff; | |
184 | data->fan_min[1] = val & 0xff; | |
185 | ||
186 | data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); | |
187 | data->temp_max = | |
188 | gl518_read_value(client, GL518_REG_TEMP_MAX); | |
189 | data->temp_hyst = | |
190 | gl518_read_value(client, GL518_REG_TEMP_HYST); | |
191 | ||
192 | val = gl518_read_value(client, GL518_REG_MISC); | |
193 | data->fan_div[0] = (val >> 6) & 0x03; | |
194 | data->fan_div[1] = (val >> 4) & 0x03; | |
195 | data->fan_auto1 = (val >> 3) & 0x01; | |
196 | ||
197 | data->alarms &= data->alarm_mask; | |
198 | ||
199 | val = gl518_read_value(client, GL518_REG_CONF); | |
200 | data->beep_enable = (val >> 2) & 1; | |
201 | ||
202 | if (data->type != gl518sm_r00) { | |
203 | data->voltage_in[0] = | |
204 | gl518_read_value(client, GL518_REG_VDD); | |
205 | data->voltage_in[1] = | |
206 | gl518_read_value(client, GL518_REG_VIN1); | |
207 | data->voltage_in[2] = | |
208 | gl518_read_value(client, GL518_REG_VIN2); | |
209 | } | |
210 | data->voltage_in[3] = | |
211 | gl518_read_value(client, GL518_REG_VIN3); | |
212 | ||
213 | data->last_updated = jiffies; | |
214 | data->valid = 1; | |
215 | } | |
216 | ||
217 | mutex_unlock(&data->update_lock); | |
218 | ||
219 | return data; | |
220 | } | |
1da177e4 LT |
221 | |
222 | /* | |
223 | * Sysfs stuff | |
224 | */ | |
225 | ||
226 | #define show(type, suffix, value) \ | |
228f8e0c GR |
227 | static ssize_t show_##suffix(struct device *dev, \ |
228 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
229 | { \ |
230 | struct gl518_data *data = gl518_update_device(dev); \ | |
231 | return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ | |
232 | } | |
233 | ||
1da177e4 LT |
234 | show(TEMP, temp_input1, temp_in); |
235 | show(TEMP, temp_max1, temp_max); | |
236 | show(TEMP, temp_hyst1, temp_hyst); | |
237 | show(BOOL, fan_auto1, fan_auto1); | |
1da177e4 LT |
238 | show(VDD, in_input0, voltage_in[0]); |
239 | show(IN, in_input1, voltage_in[1]); | |
240 | show(IN, in_input2, voltage_in[2]); | |
241 | show(IN, in_input3, voltage_in[3]); | |
242 | show(VDD, in_min0, voltage_min[0]); | |
243 | show(IN, in_min1, voltage_min[1]); | |
244 | show(IN, in_min2, voltage_min[2]); | |
245 | show(IN, in_min3, voltage_min[3]); | |
246 | show(VDD, in_max0, voltage_max[0]); | |
247 | show(IN, in_max1, voltage_max[1]); | |
248 | show(IN, in_max2, voltage_max[2]); | |
249 | show(IN, in_max3, voltage_max[3]); | |
250 | show(RAW, alarms, alarms); | |
251 | show(BOOL, beep_enable, beep_enable); | |
252 | show(BEEP_MASK, beep_mask, beep_mask); | |
253 | ||
8f3bcb36 | 254 | static ssize_t fan_input_show(struct device *dev, |
28292e79 JD |
255 | struct device_attribute *attr, char *buf) |
256 | { | |
257 | int nr = to_sensor_dev_attr(attr)->index; | |
258 | struct gl518_data *data = gl518_update_device(dev); | |
259 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr], | |
260 | DIV_FROM_REG(data->fan_div[nr]))); | |
261 | } | |
262 | ||
8f3bcb36 GR |
263 | static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
264 | char *buf) | |
28292e79 JD |
265 | { |
266 | int nr = to_sensor_dev_attr(attr)->index; | |
267 | struct gl518_data *data = gl518_update_device(dev); | |
268 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
269 | DIV_FROM_REG(data->fan_div[nr]))); | |
270 | } | |
271 | ||
8f3bcb36 GR |
272 | static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, |
273 | char *buf) | |
28292e79 JD |
274 | { |
275 | int nr = to_sensor_dev_attr(attr)->index; | |
276 | struct gl518_data *data = gl518_update_device(dev); | |
277 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
278 | } | |
279 | ||
1da177e4 | 280 | #define set(type, suffix, value, reg) \ |
228f8e0c GR |
281 | static ssize_t set_##suffix(struct device *dev, \ |
282 | struct device_attribute *attr, \ | |
283 | const char *buf, size_t count) \ | |
1da177e4 | 284 | { \ |
18faf5b9 AL |
285 | struct gl518_data *data = dev_get_drvdata(dev); \ |
286 | struct i2c_client *client = data->client; \ | |
228f8e0c GR |
287 | long val; \ |
288 | int err = kstrtol(buf, 10, &val); \ | |
289 | if (err) \ | |
290 | return err; \ | |
1da177e4 | 291 | \ |
9a61bf63 | 292 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
293 | data->value = type##_TO_REG(val); \ |
294 | gl518_write_value(client, reg, data->value); \ | |
9a61bf63 | 295 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
296 | return count; \ |
297 | } | |
298 | ||
299 | #define set_bits(type, suffix, value, reg, mask, shift) \ | |
228f8e0c GR |
300 | static ssize_t set_##suffix(struct device *dev, \ |
301 | struct device_attribute *attr, \ | |
302 | const char *buf, size_t count) \ | |
1da177e4 | 303 | { \ |
18faf5b9 AL |
304 | struct gl518_data *data = dev_get_drvdata(dev); \ |
305 | struct i2c_client *client = data->client; \ | |
1da177e4 | 306 | int regvalue; \ |
228f8e0c GR |
307 | unsigned long val; \ |
308 | int err = kstrtoul(buf, 10, &val); \ | |
309 | if (err) \ | |
310 | return err; \ | |
1da177e4 | 311 | \ |
9a61bf63 | 312 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
313 | regvalue = gl518_read_value(client, reg); \ |
314 | data->value = type##_TO_REG(val); \ | |
315 | regvalue = (regvalue & ~mask) | (data->value << shift); \ | |
316 | gl518_write_value(client, reg, regvalue); \ | |
9a61bf63 | 317 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
318 | return count; \ |
319 | } | |
320 | ||
321 | #define set_low(type, suffix, value, reg) \ | |
322 | set_bits(type, suffix, value, reg, 0x00ff, 0) | |
323 | #define set_high(type, suffix, value, reg) \ | |
324 | set_bits(type, suffix, value, reg, 0xff00, 8) | |
325 | ||
326 | set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); | |
327 | set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); | |
328 | set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); | |
1da177e4 LT |
329 | set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); |
330 | set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); | |
331 | set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); | |
332 | set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); | |
333 | set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); | |
334 | set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); | |
335 | set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); | |
336 | set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); | |
337 | set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); | |
338 | set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); | |
339 | ||
8f3bcb36 GR |
340 | static ssize_t fan_min_store(struct device *dev, |
341 | struct device_attribute *attr, const char *buf, | |
342 | size_t count) | |
1da177e4 | 343 | { |
18faf5b9 AL |
344 | struct gl518_data *data = dev_get_drvdata(dev); |
345 | struct i2c_client *client = data->client; | |
28292e79 | 346 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 | 347 | int regvalue; |
228f8e0c GR |
348 | unsigned long val; |
349 | int err; | |
350 | ||
351 | err = kstrtoul(buf, 10, &val); | |
352 | if (err) | |
353 | return err; | |
1da177e4 | 354 | |
9a61bf63 | 355 | mutex_lock(&data->update_lock); |
1da177e4 | 356 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
28292e79 JD |
357 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
358 | regvalue = (regvalue & (0xff << (8 * nr))) | |
359 | | (data->fan_min[nr] << (8 * (1 - nr))); | |
1da177e4 LT |
360 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
361 | ||
362 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
28292e79 JD |
363 | if (data->fan_min[nr] == 0) |
364 | data->alarm_mask &= ~(0x20 << nr); | |
1da177e4 | 365 | else |
28292e79 | 366 | data->alarm_mask |= (0x20 << nr); |
1da177e4 LT |
367 | data->beep_mask &= data->alarm_mask; |
368 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
369 | ||
9a61bf63 | 370 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
371 | return count; |
372 | } | |
373 | ||
8f3bcb36 GR |
374 | static ssize_t fan_div_store(struct device *dev, |
375 | struct device_attribute *attr, const char *buf, | |
376 | size_t count) | |
1da177e4 | 377 | { |
18faf5b9 AL |
378 | struct gl518_data *data = dev_get_drvdata(dev); |
379 | struct i2c_client *client = data->client; | |
28292e79 | 380 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 | 381 | int regvalue; |
228f8e0c GR |
382 | unsigned long val; |
383 | int err; | |
384 | ||
385 | err = kstrtoul(buf, 10, &val); | |
386 | if (err) | |
387 | return err; | |
1da177e4 | 388 | |
21df67b1 | 389 | switch (val) { |
228f8e0c GR |
390 | case 1: |
391 | val = 0; | |
392 | break; | |
393 | case 2: | |
394 | val = 1; | |
395 | break; | |
396 | case 4: | |
397 | val = 2; | |
398 | break; | |
399 | case 8: | |
400 | val = 3; | |
401 | break; | |
21df67b1 | 402 | default: |
b55f3757 GR |
403 | dev_err(dev, |
404 | "Invalid fan clock divider %lu, choose one of 1, 2, 4 or 8\n", | |
405 | val); | |
21df67b1 JD |
406 | return -EINVAL; |
407 | } | |
408 | ||
9a61bf63 | 409 | mutex_lock(&data->update_lock); |
28292e79 | 410 | regvalue = gl518_read_value(client, GL518_REG_MISC); |
21df67b1 | 411 | data->fan_div[nr] = val; |
28292e79 JD |
412 | regvalue = (regvalue & ~(0xc0 >> (2 * nr))) |
413 | | (data->fan_div[nr] << (6 - 2 * nr)); | |
414 | gl518_write_value(client, GL518_REG_MISC, regvalue); | |
9a61bf63 | 415 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
416 | return count; |
417 | } | |
418 | ||
8f3bcb36 GR |
419 | static DEVICE_ATTR(temp1_input, 0444, show_temp_input1, NULL); |
420 | static DEVICE_ATTR(temp1_max, 0644, show_temp_max1, set_temp_max1); | |
421 | static DEVICE_ATTR(temp1_max_hyst, 0644, | |
422 | show_temp_hyst1, set_temp_hyst1); | |
423 | static DEVICE_ATTR(fan1_auto, 0644, show_fan_auto1, set_fan_auto1); | |
424 | static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); | |
425 | static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); | |
426 | static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); | |
427 | static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); | |
428 | static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); | |
429 | static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); | |
430 | static DEVICE_ATTR(in0_input, 0444, show_in_input0, NULL); | |
431 | static DEVICE_ATTR(in1_input, 0444, show_in_input1, NULL); | |
432 | static DEVICE_ATTR(in2_input, 0444, show_in_input2, NULL); | |
433 | static DEVICE_ATTR(in3_input, 0444, show_in_input3, NULL); | |
434 | static DEVICE_ATTR(in0_min, 0644, show_in_min0, set_in_min0); | |
435 | static DEVICE_ATTR(in1_min, 0644, show_in_min1, set_in_min1); | |
436 | static DEVICE_ATTR(in2_min, 0644, show_in_min2, set_in_min2); | |
437 | static DEVICE_ATTR(in3_min, 0644, show_in_min3, set_in_min3); | |
438 | static DEVICE_ATTR(in0_max, 0644, show_in_max0, set_in_max0); | |
439 | static DEVICE_ATTR(in1_max, 0644, show_in_max1, set_in_max1); | |
440 | static DEVICE_ATTR(in2_max, 0644, show_in_max2, set_in_max2); | |
441 | static DEVICE_ATTR(in3_max, 0644, show_in_max3, set_in_max3); | |
442 | static DEVICE_ATTR(alarms, 0444, show_alarms, NULL); | |
443 | static DEVICE_ATTR(beep_enable, 0644, | |
444 | show_beep_enable, set_beep_enable); | |
445 | static DEVICE_ATTR(beep_mask, 0644, | |
446 | show_beep_mask, set_beep_mask); | |
447 | ||
448 | static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, | |
da6848da JD |
449 | char *buf) |
450 | { | |
451 | int bitnr = to_sensor_dev_attr(attr)->index; | |
452 | struct gl518_data *data = gl518_update_device(dev); | |
453 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
454 | } | |
455 | ||
8f3bcb36 GR |
456 | static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
457 | static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); | |
458 | static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); | |
459 | static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); | |
460 | static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); | |
461 | static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5); | |
462 | static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6); | |
da6848da | 463 | |
8f3bcb36 GR |
464 | static ssize_t beep_show(struct device *dev, struct device_attribute *attr, |
465 | char *buf) | |
da6848da JD |
466 | { |
467 | int bitnr = to_sensor_dev_attr(attr)->index; | |
468 | struct gl518_data *data = gl518_update_device(dev); | |
469 | return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); | |
470 | } | |
471 | ||
8f3bcb36 GR |
472 | static ssize_t beep_store(struct device *dev, struct device_attribute *attr, |
473 | const char *buf, size_t count) | |
da6848da | 474 | { |
18faf5b9 AL |
475 | struct gl518_data *data = dev_get_drvdata(dev); |
476 | struct i2c_client *client = data->client; | |
da6848da JD |
477 | int bitnr = to_sensor_dev_attr(attr)->index; |
478 | unsigned long bit; | |
228f8e0c GR |
479 | int err; |
480 | ||
481 | err = kstrtoul(buf, 10, &bit); | |
482 | if (err) | |
483 | return err; | |
da6848da | 484 | |
da6848da JD |
485 | if (bit & ~1) |
486 | return -EINVAL; | |
487 | ||
488 | mutex_lock(&data->update_lock); | |
489 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
490 | if (bit) | |
491 | data->beep_mask |= (1 << bitnr); | |
492 | else | |
493 | data->beep_mask &= ~(1 << bitnr); | |
494 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
495 | mutex_unlock(&data->update_lock); | |
496 | return count; | |
497 | } | |
498 | ||
8f3bcb36 GR |
499 | static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0); |
500 | static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1); | |
501 | static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2); | |
502 | static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3); | |
503 | static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4); | |
504 | static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5); | |
505 | static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6); | |
da6848da | 506 | |
87808be4 | 507 | static struct attribute *gl518_attributes[] = { |
87808be4 JD |
508 | &dev_attr_in3_input.attr, |
509 | &dev_attr_in0_min.attr, | |
510 | &dev_attr_in1_min.attr, | |
511 | &dev_attr_in2_min.attr, | |
512 | &dev_attr_in3_min.attr, | |
513 | &dev_attr_in0_max.attr, | |
514 | &dev_attr_in1_max.attr, | |
515 | &dev_attr_in2_max.attr, | |
516 | &dev_attr_in3_max.attr, | |
da6848da JD |
517 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
518 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
519 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
520 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
521 | &sensor_dev_attr_in0_beep.dev_attr.attr, | |
522 | &sensor_dev_attr_in1_beep.dev_attr.attr, | |
523 | &sensor_dev_attr_in2_beep.dev_attr.attr, | |
524 | &sensor_dev_attr_in3_beep.dev_attr.attr, | |
87808be4 JD |
525 | |
526 | &dev_attr_fan1_auto.attr, | |
28292e79 JD |
527 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
528 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
529 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
530 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
531 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
532 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
da6848da JD |
533 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
534 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
535 | &sensor_dev_attr_fan1_beep.dev_attr.attr, | |
536 | &sensor_dev_attr_fan2_beep.dev_attr.attr, | |
87808be4 JD |
537 | |
538 | &dev_attr_temp1_input.attr, | |
539 | &dev_attr_temp1_max.attr, | |
540 | &dev_attr_temp1_max_hyst.attr, | |
da6848da JD |
541 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
542 | &sensor_dev_attr_temp1_beep.dev_attr.attr, | |
87808be4 JD |
543 | |
544 | &dev_attr_alarms.attr, | |
545 | &dev_attr_beep_enable.attr, | |
546 | &dev_attr_beep_mask.attr, | |
547 | NULL | |
548 | }; | |
549 | ||
550 | static const struct attribute_group gl518_group = { | |
551 | .attrs = gl518_attributes, | |
552 | }; | |
553 | ||
5314f5c1 JD |
554 | static struct attribute *gl518_attributes_r80[] = { |
555 | &dev_attr_in0_input.attr, | |
556 | &dev_attr_in1_input.attr, | |
557 | &dev_attr_in2_input.attr, | |
558 | NULL | |
559 | }; | |
560 | ||
561 | static const struct attribute_group gl518_group_r80 = { | |
562 | .attrs = gl518_attributes_r80, | |
563 | }; | |
564 | ||
1da177e4 LT |
565 | /* |
566 | * Real code | |
567 | */ | |
568 | ||
95d80e7c | 569 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 570 | static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 571 | { |
95d80e7c | 572 | struct i2c_adapter *adapter = client->adapter; |
52df6440 | 573 | int rev; |
1da177e4 LT |
574 | |
575 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
576 | I2C_FUNC_SMBUS_WORD_DATA)) | |
95d80e7c | 577 | return -ENODEV; |
1da177e4 LT |
578 | |
579 | /* Now, we do the remaining detection. */ | |
52df6440 JD |
580 | if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80) |
581 | || (gl518_read_value(client, GL518_REG_CONF) & 0x80)) | |
582 | return -ENODEV; | |
1da177e4 LT |
583 | |
584 | /* Determine the chip type. */ | |
52df6440 JD |
585 | rev = gl518_read_value(client, GL518_REG_REVISION); |
586 | if (rev != 0x00 && rev != 0x80) | |
587 | return -ENODEV; | |
1da177e4 | 588 | |
95d80e7c | 589 | strlcpy(info->type, "gl518sm", I2C_NAME_SIZE); |
1da177e4 | 590 | |
95d80e7c JD |
591 | return 0; |
592 | } | |
593 | ||
d4a972a3 AL |
594 | /* |
595 | * Called when we have found a new GL518SM. | |
596 | * Note that we preserve D4:NoFan2 and D2:beep_enable. | |
597 | */ | |
598 | static void gl518_init_client(struct i2c_client *client) | |
599 | { | |
600 | /* Make sure we leave D7:Reset untouched */ | |
601 | u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; | |
602 | ||
603 | /* Comparator mode (D3=0), standby mode (D6=0) */ | |
604 | gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); | |
605 | ||
606 | /* Never interrupts */ | |
607 | gl518_write_value(client, GL518_REG_MASK, 0x00); | |
608 | ||
609 | /* Clear status register (D5=1), start (D6=1) */ | |
610 | gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); | |
611 | gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); | |
612 | } | |
613 | ||
95d80e7c JD |
614 | static int gl518_probe(struct i2c_client *client, |
615 | const struct i2c_device_id *id) | |
616 | { | |
18faf5b9 AL |
617 | struct device *dev = &client->dev; |
618 | struct device *hwmon_dev; | |
95d80e7c | 619 | struct gl518_data *data; |
18faf5b9 | 620 | int revision; |
95d80e7c | 621 | |
18faf5b9 | 622 | data = devm_kzalloc(dev, sizeof(struct gl518_data), GFP_KERNEL); |
bba636d0 GR |
623 | if (!data) |
624 | return -ENOMEM; | |
95d80e7c | 625 | |
18faf5b9 | 626 | data->client = client; |
95d80e7c JD |
627 | revision = gl518_read_value(client, GL518_REG_REVISION); |
628 | data->type = revision == 0x80 ? gl518sm_r80 : gl518sm_r00; | |
629 | mutex_init(&data->update_lock); | |
1da177e4 LT |
630 | |
631 | /* Initialize the GL518SM chip */ | |
632 | data->alarm_mask = 0xff; | |
a5955ed2 | 633 | gl518_init_client(client); |
1da177e4 | 634 | |
18faf5b9 AL |
635 | /* sysfs hooks */ |
636 | data->groups[0] = &gl518_group; | |
5314f5c1 | 637 | if (data->type == gl518sm_r80) |
18faf5b9 | 638 | data->groups[1] = &gl518_group_r80; |
943b0830 | 639 | |
18faf5b9 AL |
640 | hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
641 | data, data->groups); | |
642 | return PTR_ERR_OR_ZERO(hwmon_dev); | |
1da177e4 LT |
643 | } |
644 | ||
d4a972a3 AL |
645 | static const struct i2c_device_id gl518_id[] = { |
646 | { "gl518sm", 0 }, | |
647 | { } | |
648 | }; | |
649 | MODULE_DEVICE_TABLE(i2c, gl518_id); | |
1da177e4 | 650 | |
d4a972a3 AL |
651 | static struct i2c_driver gl518_driver = { |
652 | .class = I2C_CLASS_HWMON, | |
653 | .driver = { | |
654 | .name = "gl518sm", | |
655 | }, | |
656 | .probe = gl518_probe, | |
d4a972a3 AL |
657 | .id_table = gl518_id, |
658 | .detect = gl518_detect, | |
659 | .address_list = normal_i2c, | |
660 | }; | |
1da177e4 | 661 | |
f0967eea | 662 | module_i2c_driver(gl518_driver); |
1da177e4 LT |
663 | |
664 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
665 | "Kyosti Malkki <kmalkki@cc.hut.fi> and " | |
666 | "Hong-Gunn Chew <hglinux@gunnet.org>"); | |
667 | MODULE_DESCRIPTION("GL518SM driver"); | |
668 | MODULE_LICENSE("GPL"); |