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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 | |
7 | * Jean Delvare <khali@linux-fr.org> | |
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 | |
2a844c14 | 89 | #define TEMP_TO_REG(val) clamp_val(((((val) < 0 ? \ |
228f8e0c GR |
90 | (val) - 500 : \ |
91 | (val) + 500) / 1000) + 119), 0, 255) | |
1da177e4 LT |
92 | #define TEMP_FROM_REG(val) (((val) - 119) * 1000) |
93 | ||
94 | static inline u8 FAN_TO_REG(long rpm, int div) | |
95 | { | |
96 | long rpmdiv; | |
97 | if (rpm == 0) | |
98 | return 0; | |
2a844c14 GR |
99 | rpmdiv = clamp_val(rpm, 1, 960000) * div; |
100 | return clamp_val((480000 + rpmdiv / 2) / rpmdiv, 1, 255); | |
1da177e4 | 101 | } |
228f8e0c | 102 | #define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) * (div)))) |
1da177e4 | 103 | |
2a844c14 | 104 | #define IN_TO_REG(val) clamp_val((((val) + 9) / 19), 0, 255) |
228f8e0c | 105 | #define IN_FROM_REG(val) ((val) * 19) |
1da177e4 | 106 | |
2a844c14 | 107 | #define VDD_TO_REG(val) clamp_val((((val) * 4 + 47) / 95), 0, 255) |
228f8e0c | 108 | #define VDD_FROM_REG(val) (((val) * 95 + 2) / 4) |
1da177e4 | 109 | |
1da177e4 LT |
110 | #define DIV_FROM_REG(val) (1 << (val)) |
111 | ||
112 | #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) | |
113 | #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) | |
114 | ||
115 | /* Each client has this additional data */ | |
116 | struct gl518_data { | |
1beeffe4 | 117 | struct device *hwmon_dev; |
1da177e4 LT |
118 | enum chips type; |
119 | ||
9a61bf63 | 120 | struct mutex update_lock; |
1da177e4 LT |
121 | char valid; /* !=0 if following fields are valid */ |
122 | unsigned long last_updated; /* In jiffies */ | |
123 | ||
124 | u8 voltage_in[4]; /* Register values; [0] = VDD */ | |
125 | u8 voltage_min[4]; /* Register values; [0] = VDD */ | |
126 | u8 voltage_max[4]; /* Register values; [0] = VDD */ | |
1da177e4 LT |
127 | u8 fan_in[2]; |
128 | u8 fan_min[2]; | |
129 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
130 | u8 fan_auto1; /* Boolean */ | |
131 | u8 temp_in; /* Register values */ | |
132 | u8 temp_max; /* Register values */ | |
133 | u8 temp_hyst; /* Register values */ | |
134 | u8 alarms; /* Register value */ | |
a5955ed2 | 135 | u8 alarm_mask; |
1da177e4 LT |
136 | u8 beep_mask; /* Register value */ |
137 | u8 beep_enable; /* Boolean */ | |
138 | }; | |
139 | ||
95d80e7c JD |
140 | static int gl518_probe(struct i2c_client *client, |
141 | const struct i2c_device_id *id); | |
310ec792 | 142 | static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info); |
1da177e4 | 143 | static void gl518_init_client(struct i2c_client *client); |
95d80e7c | 144 | static int gl518_remove(struct i2c_client *client); |
1da177e4 LT |
145 | static int gl518_read_value(struct i2c_client *client, u8 reg); |
146 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value); | |
147 | static struct gl518_data *gl518_update_device(struct device *dev); | |
148 | ||
95d80e7c JD |
149 | static const struct i2c_device_id gl518_id[] = { |
150 | { "gl518sm", 0 }, | |
151 | { } | |
152 | }; | |
153 | MODULE_DEVICE_TABLE(i2c, gl518_id); | |
154 | ||
1da177e4 LT |
155 | /* This is the driver that will be inserted */ |
156 | static struct i2c_driver gl518_driver = { | |
95d80e7c | 157 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 158 | .driver = { |
cdaf7934 LR |
159 | .name = "gl518sm", |
160 | }, | |
95d80e7c JD |
161 | .probe = gl518_probe, |
162 | .remove = gl518_remove, | |
163 | .id_table = gl518_id, | |
164 | .detect = gl518_detect, | |
c3813d6a | 165 | .address_list = normal_i2c, |
1da177e4 LT |
166 | }; |
167 | ||
168 | /* | |
169 | * Sysfs stuff | |
170 | */ | |
171 | ||
172 | #define show(type, suffix, value) \ | |
228f8e0c GR |
173 | static ssize_t show_##suffix(struct device *dev, \ |
174 | struct device_attribute *attr, char *buf) \ | |
1da177e4 LT |
175 | { \ |
176 | struct gl518_data *data = gl518_update_device(dev); \ | |
177 | return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ | |
178 | } | |
179 | ||
1da177e4 LT |
180 | show(TEMP, temp_input1, temp_in); |
181 | show(TEMP, temp_max1, temp_max); | |
182 | show(TEMP, temp_hyst1, temp_hyst); | |
183 | show(BOOL, fan_auto1, fan_auto1); | |
1da177e4 LT |
184 | show(VDD, in_input0, voltage_in[0]); |
185 | show(IN, in_input1, voltage_in[1]); | |
186 | show(IN, in_input2, voltage_in[2]); | |
187 | show(IN, in_input3, voltage_in[3]); | |
188 | show(VDD, in_min0, voltage_min[0]); | |
189 | show(IN, in_min1, voltage_min[1]); | |
190 | show(IN, in_min2, voltage_min[2]); | |
191 | show(IN, in_min3, voltage_min[3]); | |
192 | show(VDD, in_max0, voltage_max[0]); | |
193 | show(IN, in_max1, voltage_max[1]); | |
194 | show(IN, in_max2, voltage_max[2]); | |
195 | show(IN, in_max3, voltage_max[3]); | |
196 | show(RAW, alarms, alarms); | |
197 | show(BOOL, beep_enable, beep_enable); | |
198 | show(BEEP_MASK, beep_mask, beep_mask); | |
199 | ||
28292e79 JD |
200 | static ssize_t show_fan_input(struct device *dev, |
201 | struct device_attribute *attr, char *buf) | |
202 | { | |
203 | int nr = to_sensor_dev_attr(attr)->index; | |
204 | struct gl518_data *data = gl518_update_device(dev); | |
205 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr], | |
206 | DIV_FROM_REG(data->fan_div[nr]))); | |
207 | } | |
208 | ||
209 | static ssize_t show_fan_min(struct device *dev, | |
210 | struct device_attribute *attr, char *buf) | |
211 | { | |
212 | int nr = to_sensor_dev_attr(attr)->index; | |
213 | struct gl518_data *data = gl518_update_device(dev); | |
214 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
215 | DIV_FROM_REG(data->fan_div[nr]))); | |
216 | } | |
217 | ||
218 | static ssize_t show_fan_div(struct device *dev, | |
219 | struct device_attribute *attr, char *buf) | |
220 | { | |
221 | int nr = to_sensor_dev_attr(attr)->index; | |
222 | struct gl518_data *data = gl518_update_device(dev); | |
223 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
224 | } | |
225 | ||
1da177e4 | 226 | #define set(type, suffix, value, reg) \ |
228f8e0c GR |
227 | static ssize_t set_##suffix(struct device *dev, \ |
228 | struct device_attribute *attr, \ | |
229 | const char *buf, size_t count) \ | |
1da177e4 LT |
230 | { \ |
231 | struct i2c_client *client = to_i2c_client(dev); \ | |
232 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
228f8e0c GR |
233 | long val; \ |
234 | int err = kstrtol(buf, 10, &val); \ | |
235 | if (err) \ | |
236 | return err; \ | |
1da177e4 | 237 | \ |
9a61bf63 | 238 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
239 | data->value = type##_TO_REG(val); \ |
240 | gl518_write_value(client, reg, data->value); \ | |
9a61bf63 | 241 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
242 | return count; \ |
243 | } | |
244 | ||
245 | #define set_bits(type, suffix, value, reg, mask, shift) \ | |
228f8e0c GR |
246 | static ssize_t set_##suffix(struct device *dev, \ |
247 | struct device_attribute *attr, \ | |
248 | const char *buf, size_t count) \ | |
1da177e4 LT |
249 | { \ |
250 | struct i2c_client *client = to_i2c_client(dev); \ | |
251 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
252 | int regvalue; \ | |
228f8e0c GR |
253 | unsigned long val; \ |
254 | int err = kstrtoul(buf, 10, &val); \ | |
255 | if (err) \ | |
256 | return err; \ | |
1da177e4 | 257 | \ |
9a61bf63 | 258 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
259 | regvalue = gl518_read_value(client, reg); \ |
260 | data->value = type##_TO_REG(val); \ | |
261 | regvalue = (regvalue & ~mask) | (data->value << shift); \ | |
262 | gl518_write_value(client, reg, regvalue); \ | |
9a61bf63 | 263 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
264 | return count; \ |
265 | } | |
266 | ||
267 | #define set_low(type, suffix, value, reg) \ | |
268 | set_bits(type, suffix, value, reg, 0x00ff, 0) | |
269 | #define set_high(type, suffix, value, reg) \ | |
270 | set_bits(type, suffix, value, reg, 0xff00, 8) | |
271 | ||
272 | set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); | |
273 | set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); | |
274 | set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); | |
1da177e4 LT |
275 | set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); |
276 | set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); | |
277 | set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); | |
278 | set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); | |
279 | set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); | |
280 | set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); | |
281 | set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); | |
282 | set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); | |
283 | set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); | |
284 | set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); | |
285 | ||
28292e79 JD |
286 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
287 | const char *buf, size_t count) | |
1da177e4 LT |
288 | { |
289 | struct i2c_client *client = to_i2c_client(dev); | |
290 | struct gl518_data *data = i2c_get_clientdata(client); | |
28292e79 | 291 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 | 292 | int regvalue; |
228f8e0c GR |
293 | unsigned long val; |
294 | int err; | |
295 | ||
296 | err = kstrtoul(buf, 10, &val); | |
297 | if (err) | |
298 | return err; | |
1da177e4 | 299 | |
9a61bf63 | 300 | mutex_lock(&data->update_lock); |
1da177e4 | 301 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
28292e79 JD |
302 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
303 | regvalue = (regvalue & (0xff << (8 * nr))) | |
304 | | (data->fan_min[nr] << (8 * (1 - nr))); | |
1da177e4 LT |
305 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
306 | ||
307 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
28292e79 JD |
308 | if (data->fan_min[nr] == 0) |
309 | data->alarm_mask &= ~(0x20 << nr); | |
1da177e4 | 310 | else |
28292e79 | 311 | data->alarm_mask |= (0x20 << nr); |
1da177e4 LT |
312 | data->beep_mask &= data->alarm_mask; |
313 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
314 | ||
9a61bf63 | 315 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
316 | return count; |
317 | } | |
318 | ||
28292e79 JD |
319 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
320 | const char *buf, size_t count) | |
1da177e4 LT |
321 | { |
322 | struct i2c_client *client = to_i2c_client(dev); | |
323 | struct gl518_data *data = i2c_get_clientdata(client); | |
28292e79 | 324 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 | 325 | int regvalue; |
228f8e0c GR |
326 | unsigned long val; |
327 | int err; | |
328 | ||
329 | err = kstrtoul(buf, 10, &val); | |
330 | if (err) | |
331 | return err; | |
1da177e4 | 332 | |
21df67b1 | 333 | switch (val) { |
228f8e0c GR |
334 | case 1: |
335 | val = 0; | |
336 | break; | |
337 | case 2: | |
338 | val = 1; | |
339 | break; | |
340 | case 4: | |
341 | val = 2; | |
342 | break; | |
343 | case 8: | |
344 | val = 3; | |
345 | break; | |
21df67b1 | 346 | default: |
b55f3757 GR |
347 | dev_err(dev, |
348 | "Invalid fan clock divider %lu, choose one of 1, 2, 4 or 8\n", | |
349 | val); | |
21df67b1 JD |
350 | return -EINVAL; |
351 | } | |
352 | ||
9a61bf63 | 353 | mutex_lock(&data->update_lock); |
28292e79 | 354 | regvalue = gl518_read_value(client, GL518_REG_MISC); |
21df67b1 | 355 | data->fan_div[nr] = val; |
28292e79 JD |
356 | regvalue = (regvalue & ~(0xc0 >> (2 * nr))) |
357 | | (data->fan_div[nr] << (6 - 2 * nr)); | |
358 | gl518_write_value(client, GL518_REG_MISC, regvalue); | |
9a61bf63 | 359 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
360 | return count; |
361 | } | |
362 | ||
363 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); | |
364 | static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); | |
365 | static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, | |
366 | show_temp_hyst1, set_temp_hyst1); | |
367 | static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); | |
28292e79 JD |
368 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); |
369 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); | |
370 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, | |
371 | show_fan_min, set_fan_min, 0); | |
372 | static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, | |
373 | show_fan_min, set_fan_min, 1); | |
374 | static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, | |
375 | show_fan_div, set_fan_div, 0); | |
376 | static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, | |
377 | show_fan_div, set_fan_div, 1); | |
1da177e4 LT |
378 | static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); |
379 | static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); | |
380 | static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); | |
381 | static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); | |
382 | static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); | |
383 | static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); | |
384 | static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); | |
385 | static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); | |
386 | static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); | |
387 | static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); | |
388 | static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); | |
389 | static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); | |
390 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
391 | static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, | |
392 | show_beep_enable, set_beep_enable); | |
393 | static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, | |
394 | show_beep_mask, set_beep_mask); | |
395 | ||
da6848da JD |
396 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
397 | char *buf) | |
398 | { | |
399 | int bitnr = to_sensor_dev_attr(attr)->index; | |
400 | struct gl518_data *data = gl518_update_device(dev); | |
401 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
402 | } | |
403 | ||
404 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
405 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
406 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
407 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
408 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
409 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5); | |
410 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6); | |
411 | ||
412 | static ssize_t show_beep(struct device *dev, struct device_attribute *attr, | |
413 | char *buf) | |
414 | { | |
415 | int bitnr = to_sensor_dev_attr(attr)->index; | |
416 | struct gl518_data *data = gl518_update_device(dev); | |
417 | return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); | |
418 | } | |
419 | ||
420 | static ssize_t set_beep(struct device *dev, struct device_attribute *attr, | |
421 | const char *buf, size_t count) | |
422 | { | |
423 | struct i2c_client *client = to_i2c_client(dev); | |
424 | struct gl518_data *data = i2c_get_clientdata(client); | |
425 | int bitnr = to_sensor_dev_attr(attr)->index; | |
426 | unsigned long bit; | |
228f8e0c GR |
427 | int err; |
428 | ||
429 | err = kstrtoul(buf, 10, &bit); | |
430 | if (err) | |
431 | return err; | |
da6848da | 432 | |
da6848da JD |
433 | if (bit & ~1) |
434 | return -EINVAL; | |
435 | ||
436 | mutex_lock(&data->update_lock); | |
437 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
438 | if (bit) | |
439 | data->beep_mask |= (1 << bitnr); | |
440 | else | |
441 | data->beep_mask &= ~(1 << bitnr); | |
442 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
443 | mutex_unlock(&data->update_lock); | |
444 | return count; | |
445 | } | |
446 | ||
447 | static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 0); | |
448 | static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 1); | |
449 | static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 2); | |
450 | static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 3); | |
451 | static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 4); | |
452 | static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 5); | |
453 | static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 6); | |
454 | ||
87808be4 | 455 | static struct attribute *gl518_attributes[] = { |
87808be4 JD |
456 | &dev_attr_in3_input.attr, |
457 | &dev_attr_in0_min.attr, | |
458 | &dev_attr_in1_min.attr, | |
459 | &dev_attr_in2_min.attr, | |
460 | &dev_attr_in3_min.attr, | |
461 | &dev_attr_in0_max.attr, | |
462 | &dev_attr_in1_max.attr, | |
463 | &dev_attr_in2_max.attr, | |
464 | &dev_attr_in3_max.attr, | |
da6848da JD |
465 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
466 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
467 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
468 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
469 | &sensor_dev_attr_in0_beep.dev_attr.attr, | |
470 | &sensor_dev_attr_in1_beep.dev_attr.attr, | |
471 | &sensor_dev_attr_in2_beep.dev_attr.attr, | |
472 | &sensor_dev_attr_in3_beep.dev_attr.attr, | |
87808be4 JD |
473 | |
474 | &dev_attr_fan1_auto.attr, | |
28292e79 JD |
475 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
476 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
477 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
478 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
479 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
480 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
da6848da JD |
481 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
482 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
483 | &sensor_dev_attr_fan1_beep.dev_attr.attr, | |
484 | &sensor_dev_attr_fan2_beep.dev_attr.attr, | |
87808be4 JD |
485 | |
486 | &dev_attr_temp1_input.attr, | |
487 | &dev_attr_temp1_max.attr, | |
488 | &dev_attr_temp1_max_hyst.attr, | |
da6848da JD |
489 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
490 | &sensor_dev_attr_temp1_beep.dev_attr.attr, | |
87808be4 JD |
491 | |
492 | &dev_attr_alarms.attr, | |
493 | &dev_attr_beep_enable.attr, | |
494 | &dev_attr_beep_mask.attr, | |
495 | NULL | |
496 | }; | |
497 | ||
498 | static const struct attribute_group gl518_group = { | |
499 | .attrs = gl518_attributes, | |
500 | }; | |
501 | ||
5314f5c1 JD |
502 | static struct attribute *gl518_attributes_r80[] = { |
503 | &dev_attr_in0_input.attr, | |
504 | &dev_attr_in1_input.attr, | |
505 | &dev_attr_in2_input.attr, | |
506 | NULL | |
507 | }; | |
508 | ||
509 | static const struct attribute_group gl518_group_r80 = { | |
510 | .attrs = gl518_attributes_r80, | |
511 | }; | |
512 | ||
1da177e4 LT |
513 | /* |
514 | * Real code | |
515 | */ | |
516 | ||
95d80e7c | 517 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 518 | static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 519 | { |
95d80e7c | 520 | struct i2c_adapter *adapter = client->adapter; |
52df6440 | 521 | int rev; |
1da177e4 LT |
522 | |
523 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
524 | I2C_FUNC_SMBUS_WORD_DATA)) | |
95d80e7c | 525 | return -ENODEV; |
1da177e4 LT |
526 | |
527 | /* Now, we do the remaining detection. */ | |
52df6440 JD |
528 | if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80) |
529 | || (gl518_read_value(client, GL518_REG_CONF) & 0x80)) | |
530 | return -ENODEV; | |
1da177e4 LT |
531 | |
532 | /* Determine the chip type. */ | |
52df6440 JD |
533 | rev = gl518_read_value(client, GL518_REG_REVISION); |
534 | if (rev != 0x00 && rev != 0x80) | |
535 | return -ENODEV; | |
1da177e4 | 536 | |
95d80e7c | 537 | strlcpy(info->type, "gl518sm", I2C_NAME_SIZE); |
1da177e4 | 538 | |
95d80e7c JD |
539 | return 0; |
540 | } | |
541 | ||
542 | static int gl518_probe(struct i2c_client *client, | |
543 | const struct i2c_device_id *id) | |
544 | { | |
545 | struct gl518_data *data; | |
546 | int err, revision; | |
547 | ||
bba636d0 GR |
548 | data = devm_kzalloc(&client->dev, sizeof(struct gl518_data), |
549 | GFP_KERNEL); | |
550 | if (!data) | |
551 | return -ENOMEM; | |
95d80e7c JD |
552 | |
553 | i2c_set_clientdata(client, data); | |
554 | revision = gl518_read_value(client, GL518_REG_REVISION); | |
555 | data->type = revision == 0x80 ? gl518sm_r80 : gl518sm_r00; | |
556 | mutex_init(&data->update_lock); | |
1da177e4 LT |
557 | |
558 | /* Initialize the GL518SM chip */ | |
559 | data->alarm_mask = 0xff; | |
a5955ed2 | 560 | gl518_init_client(client); |
1da177e4 LT |
561 | |
562 | /* Register sysfs hooks */ | |
228f8e0c GR |
563 | err = sysfs_create_group(&client->dev.kobj, &gl518_group); |
564 | if (err) | |
bba636d0 | 565 | return err; |
228f8e0c GR |
566 | if (data->type == gl518sm_r80) { |
567 | err = sysfs_create_group(&client->dev.kobj, &gl518_group_r80); | |
568 | if (err) | |
5314f5c1 | 569 | goto exit_remove_files; |
228f8e0c | 570 | } |
87808be4 | 571 | |
a5955ed2 | 572 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
573 | if (IS_ERR(data->hwmon_dev)) { |
574 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 575 | goto exit_remove_files; |
943b0830 MH |
576 | } |
577 | ||
1da177e4 LT |
578 | return 0; |
579 | ||
87808be4 | 580 | exit_remove_files: |
a5955ed2 | 581 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
5314f5c1 JD |
582 | if (data->type == gl518sm_r80) |
583 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
1da177e4 LT |
584 | return err; |
585 | } | |
586 | ||
587 | ||
228f8e0c GR |
588 | /* |
589 | * Called when we have found a new GL518SM. | |
590 | * Note that we preserve D4:NoFan2 and D2:beep_enable. | |
591 | */ | |
1da177e4 LT |
592 | static void gl518_init_client(struct i2c_client *client) |
593 | { | |
594 | /* Make sure we leave D7:Reset untouched */ | |
595 | u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; | |
596 | ||
597 | /* Comparator mode (D3=0), standby mode (D6=0) */ | |
598 | gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); | |
599 | ||
600 | /* Never interrupts */ | |
601 | gl518_write_value(client, GL518_REG_MASK, 0x00); | |
602 | ||
603 | /* Clear status register (D5=1), start (D6=1) */ | |
604 | gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); | |
605 | gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); | |
606 | } | |
607 | ||
95d80e7c | 608 | static int gl518_remove(struct i2c_client *client) |
1da177e4 | 609 | { |
943b0830 | 610 | struct gl518_data *data = i2c_get_clientdata(client); |
1da177e4 | 611 | |
1beeffe4 | 612 | hwmon_device_unregister(data->hwmon_dev); |
87808be4 | 613 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
5314f5c1 JD |
614 | if (data->type == gl518sm_r80) |
615 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
943b0830 | 616 | |
1da177e4 LT |
617 | return 0; |
618 | } | |
619 | ||
228f8e0c GR |
620 | /* |
621 | * Registers 0x07 to 0x0c are word-sized, others are byte-sized | |
622 | * GL518 uses a high-byte first convention, which is exactly opposite to | |
623 | * the SMBus standard. | |
624 | */ | |
1da177e4 LT |
625 | static int gl518_read_value(struct i2c_client *client, u8 reg) |
626 | { | |
627 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
90f4102c | 628 | return i2c_smbus_read_word_swapped(client, reg); |
1da177e4 LT |
629 | else |
630 | return i2c_smbus_read_byte_data(client, reg); | |
631 | } | |
632 | ||
1da177e4 LT |
633 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) |
634 | { | |
635 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
90f4102c | 636 | return i2c_smbus_write_word_swapped(client, reg, value); |
1da177e4 LT |
637 | else |
638 | return i2c_smbus_write_byte_data(client, reg, value); | |
639 | } | |
640 | ||
641 | static struct gl518_data *gl518_update_device(struct device *dev) | |
642 | { | |
643 | struct i2c_client *client = to_i2c_client(dev); | |
644 | struct gl518_data *data = i2c_get_clientdata(client); | |
645 | int val; | |
646 | ||
9a61bf63 | 647 | mutex_lock(&data->update_lock); |
1da177e4 LT |
648 | |
649 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
650 | || !data->valid) { | |
651 | dev_dbg(&client->dev, "Starting gl518 update\n"); | |
652 | ||
653 | data->alarms = gl518_read_value(client, GL518_REG_INT); | |
654 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
655 | ||
656 | val = gl518_read_value(client, GL518_REG_VDD_LIMIT); | |
657 | data->voltage_min[0] = val & 0xff; | |
658 | data->voltage_max[0] = (val >> 8) & 0xff; | |
659 | val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); | |
660 | data->voltage_min[1] = val & 0xff; | |
661 | data->voltage_max[1] = (val >> 8) & 0xff; | |
662 | val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); | |
663 | data->voltage_min[2] = val & 0xff; | |
664 | data->voltage_max[2] = (val >> 8) & 0xff; | |
665 | val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); | |
666 | data->voltage_min[3] = val & 0xff; | |
667 | data->voltage_max[3] = (val >> 8) & 0xff; | |
668 | ||
669 | val = gl518_read_value(client, GL518_REG_FAN_COUNT); | |
670 | data->fan_in[0] = (val >> 8) & 0xff; | |
671 | data->fan_in[1] = val & 0xff; | |
672 | ||
673 | val = gl518_read_value(client, GL518_REG_FAN_LIMIT); | |
674 | data->fan_min[0] = (val >> 8) & 0xff; | |
675 | data->fan_min[1] = val & 0xff; | |
676 | ||
677 | data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); | |
678 | data->temp_max = | |
679 | gl518_read_value(client, GL518_REG_TEMP_MAX); | |
680 | data->temp_hyst = | |
681 | gl518_read_value(client, GL518_REG_TEMP_HYST); | |
682 | ||
683 | val = gl518_read_value(client, GL518_REG_MISC); | |
684 | data->fan_div[0] = (val >> 6) & 0x03; | |
685 | data->fan_div[1] = (val >> 4) & 0x03; | |
686 | data->fan_auto1 = (val >> 3) & 0x01; | |
687 | ||
688 | data->alarms &= data->alarm_mask; | |
689 | ||
690 | val = gl518_read_value(client, GL518_REG_CONF); | |
691 | data->beep_enable = (val >> 2) & 1; | |
692 | ||
693 | if (data->type != gl518sm_r00) { | |
694 | data->voltage_in[0] = | |
695 | gl518_read_value(client, GL518_REG_VDD); | |
696 | data->voltage_in[1] = | |
697 | gl518_read_value(client, GL518_REG_VIN1); | |
698 | data->voltage_in[2] = | |
699 | gl518_read_value(client, GL518_REG_VIN2); | |
700 | } | |
701 | data->voltage_in[3] = | |
702 | gl518_read_value(client, GL518_REG_VIN3); | |
703 | ||
704 | data->last_updated = jiffies; | |
705 | data->valid = 1; | |
706 | } | |
707 | ||
9a61bf63 | 708 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
709 | |
710 | return data; | |
711 | } | |
712 | ||
f0967eea | 713 | module_i2c_driver(gl518_driver); |
1da177e4 LT |
714 | |
715 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
716 | "Kyosti Malkki <kmalkki@cc.hut.fi> and " | |
717 | "Hong-Gunn Chew <hglinux@gunnet.org>"); | |
718 | MODULE_DESCRIPTION("GL518SM driver"); | |
719 | MODULE_LICENSE("GPL"); |