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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 | ||
86 | #define BOOL_FROM_REG(val) ((val)?0:1) | |
87 | #define BOOL_TO_REG(val) ((val)?0:1) | |
88 | ||
89 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \ | |
90 | (val)-500:(val)+500)/1000)+119),0,255)) | |
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; | |
72240307 JD |
98 | rpmdiv = SENSORS_LIMIT(rpm, 1, 960000) * div; |
99 | return SENSORS_LIMIT((480000 + rpmdiv / 2) / rpmdiv, 1, 255); | |
1da177e4 | 100 | } |
72240307 | 101 | #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val)*(div)))) |
1da177e4 LT |
102 | |
103 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) | |
104 | #define IN_FROM_REG(val) ((val)*19) | |
105 | ||
106 | #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) | |
107 | #define VDD_FROM_REG(val) (((val)*95+2)/4) | |
108 | ||
1da177e4 LT |
109 | #define DIV_FROM_REG(val) (1 << (val)) |
110 | ||
111 | #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) | |
112 | #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) | |
113 | ||
114 | /* Each client has this additional data */ | |
115 | struct gl518_data { | |
1beeffe4 | 116 | struct device *hwmon_dev; |
1da177e4 LT |
117 | enum chips type; |
118 | ||
9a61bf63 | 119 | struct mutex update_lock; |
1da177e4 LT |
120 | char valid; /* !=0 if following fields are valid */ |
121 | unsigned long last_updated; /* In jiffies */ | |
122 | ||
123 | u8 voltage_in[4]; /* Register values; [0] = VDD */ | |
124 | u8 voltage_min[4]; /* Register values; [0] = VDD */ | |
125 | u8 voltage_max[4]; /* Register values; [0] = VDD */ | |
1da177e4 LT |
126 | u8 fan_in[2]; |
127 | u8 fan_min[2]; | |
128 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
129 | u8 fan_auto1; /* Boolean */ | |
130 | u8 temp_in; /* Register values */ | |
131 | u8 temp_max; /* Register values */ | |
132 | u8 temp_hyst; /* Register values */ | |
133 | u8 alarms; /* Register value */ | |
a5955ed2 | 134 | u8 alarm_mask; |
1da177e4 LT |
135 | u8 beep_mask; /* Register value */ |
136 | u8 beep_enable; /* Boolean */ | |
137 | }; | |
138 | ||
95d80e7c JD |
139 | static int gl518_probe(struct i2c_client *client, |
140 | const struct i2c_device_id *id); | |
310ec792 | 141 | static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info); |
1da177e4 | 142 | static void gl518_init_client(struct i2c_client *client); |
95d80e7c | 143 | static int gl518_remove(struct i2c_client *client); |
1da177e4 LT |
144 | static int gl518_read_value(struct i2c_client *client, u8 reg); |
145 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value); | |
146 | static struct gl518_data *gl518_update_device(struct device *dev); | |
147 | ||
95d80e7c JD |
148 | static const struct i2c_device_id gl518_id[] = { |
149 | { "gl518sm", 0 }, | |
150 | { } | |
151 | }; | |
152 | MODULE_DEVICE_TABLE(i2c, gl518_id); | |
153 | ||
1da177e4 LT |
154 | /* This is the driver that will be inserted */ |
155 | static struct i2c_driver gl518_driver = { | |
95d80e7c | 156 | .class = I2C_CLASS_HWMON, |
cdaf7934 | 157 | .driver = { |
cdaf7934 LR |
158 | .name = "gl518sm", |
159 | }, | |
95d80e7c JD |
160 | .probe = gl518_probe, |
161 | .remove = gl518_remove, | |
162 | .id_table = gl518_id, | |
163 | .detect = gl518_detect, | |
c3813d6a | 164 | .address_list = normal_i2c, |
1da177e4 LT |
165 | }; |
166 | ||
167 | /* | |
168 | * Sysfs stuff | |
169 | */ | |
170 | ||
171 | #define show(type, suffix, value) \ | |
30f74292 | 172 | static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
173 | { \ |
174 | struct gl518_data *data = gl518_update_device(dev); \ | |
175 | return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ | |
176 | } | |
177 | ||
1da177e4 LT |
178 | show(TEMP, temp_input1, temp_in); |
179 | show(TEMP, temp_max1, temp_max); | |
180 | show(TEMP, temp_hyst1, temp_hyst); | |
181 | show(BOOL, fan_auto1, fan_auto1); | |
1da177e4 LT |
182 | show(VDD, in_input0, voltage_in[0]); |
183 | show(IN, in_input1, voltage_in[1]); | |
184 | show(IN, in_input2, voltage_in[2]); | |
185 | show(IN, in_input3, voltage_in[3]); | |
186 | show(VDD, in_min0, voltage_min[0]); | |
187 | show(IN, in_min1, voltage_min[1]); | |
188 | show(IN, in_min2, voltage_min[2]); | |
189 | show(IN, in_min3, voltage_min[3]); | |
190 | show(VDD, in_max0, voltage_max[0]); | |
191 | show(IN, in_max1, voltage_max[1]); | |
192 | show(IN, in_max2, voltage_max[2]); | |
193 | show(IN, in_max3, voltage_max[3]); | |
194 | show(RAW, alarms, alarms); | |
195 | show(BOOL, beep_enable, beep_enable); | |
196 | show(BEEP_MASK, beep_mask, beep_mask); | |
197 | ||
28292e79 JD |
198 | static ssize_t show_fan_input(struct device *dev, |
199 | struct device_attribute *attr, char *buf) | |
200 | { | |
201 | int nr = to_sensor_dev_attr(attr)->index; | |
202 | struct gl518_data *data = gl518_update_device(dev); | |
203 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr], | |
204 | DIV_FROM_REG(data->fan_div[nr]))); | |
205 | } | |
206 | ||
207 | static ssize_t show_fan_min(struct device *dev, | |
208 | struct device_attribute *attr, char *buf) | |
209 | { | |
210 | int nr = to_sensor_dev_attr(attr)->index; | |
211 | struct gl518_data *data = gl518_update_device(dev); | |
212 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
213 | DIV_FROM_REG(data->fan_div[nr]))); | |
214 | } | |
215 | ||
216 | static ssize_t show_fan_div(struct device *dev, | |
217 | struct device_attribute *attr, char *buf) | |
218 | { | |
219 | int nr = to_sensor_dev_attr(attr)->index; | |
220 | struct gl518_data *data = gl518_update_device(dev); | |
221 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
222 | } | |
223 | ||
1da177e4 | 224 | #define set(type, suffix, value, reg) \ |
30f74292 | 225 | static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
1da177e4 LT |
226 | size_t count) \ |
227 | { \ | |
228 | struct i2c_client *client = to_i2c_client(dev); \ | |
229 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
230 | long val = simple_strtol(buf, NULL, 10); \ | |
231 | \ | |
9a61bf63 | 232 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
233 | data->value = type##_TO_REG(val); \ |
234 | gl518_write_value(client, reg, data->value); \ | |
9a61bf63 | 235 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
236 | return count; \ |
237 | } | |
238 | ||
239 | #define set_bits(type, suffix, value, reg, mask, shift) \ | |
30f74292 | 240 | static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
1da177e4 LT |
241 | size_t count) \ |
242 | { \ | |
243 | struct i2c_client *client = to_i2c_client(dev); \ | |
244 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
245 | int regvalue; \ | |
246 | unsigned long val = simple_strtoul(buf, NULL, 10); \ | |
247 | \ | |
9a61bf63 | 248 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
249 | regvalue = gl518_read_value(client, reg); \ |
250 | data->value = type##_TO_REG(val); \ | |
251 | regvalue = (regvalue & ~mask) | (data->value << shift); \ | |
252 | gl518_write_value(client, reg, regvalue); \ | |
9a61bf63 | 253 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
254 | return count; \ |
255 | } | |
256 | ||
257 | #define set_low(type, suffix, value, reg) \ | |
258 | set_bits(type, suffix, value, reg, 0x00ff, 0) | |
259 | #define set_high(type, suffix, value, reg) \ | |
260 | set_bits(type, suffix, value, reg, 0xff00, 8) | |
261 | ||
262 | set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); | |
263 | set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); | |
264 | set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); | |
1da177e4 LT |
265 | set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); |
266 | set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); | |
267 | set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); | |
268 | set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); | |
269 | set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); | |
270 | set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); | |
271 | set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); | |
272 | set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); | |
273 | set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); | |
274 | set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); | |
275 | ||
28292e79 JD |
276 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
277 | const char *buf, size_t count) | |
1da177e4 LT |
278 | { |
279 | struct i2c_client *client = to_i2c_client(dev); | |
280 | struct gl518_data *data = i2c_get_clientdata(client); | |
28292e79 | 281 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
282 | int regvalue; |
283 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
284 | ||
9a61bf63 | 285 | mutex_lock(&data->update_lock); |
1da177e4 | 286 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
28292e79 JD |
287 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
288 | regvalue = (regvalue & (0xff << (8 * nr))) | |
289 | | (data->fan_min[nr] << (8 * (1 - nr))); | |
1da177e4 LT |
290 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
291 | ||
292 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
28292e79 JD |
293 | if (data->fan_min[nr] == 0) |
294 | data->alarm_mask &= ~(0x20 << nr); | |
1da177e4 | 295 | else |
28292e79 | 296 | data->alarm_mask |= (0x20 << nr); |
1da177e4 LT |
297 | data->beep_mask &= data->alarm_mask; |
298 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
299 | ||
9a61bf63 | 300 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
301 | return count; |
302 | } | |
303 | ||
28292e79 JD |
304 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
305 | const char *buf, size_t count) | |
1da177e4 LT |
306 | { |
307 | struct i2c_client *client = to_i2c_client(dev); | |
308 | struct gl518_data *data = i2c_get_clientdata(client); | |
28292e79 | 309 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
310 | int regvalue; |
311 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
312 | ||
21df67b1 JD |
313 | switch (val) { |
314 | case 1: val = 0; break; | |
315 | case 2: val = 1; break; | |
316 | case 4: val = 2; break; | |
317 | case 8: val = 3; break; | |
318 | default: | |
319 | dev_err(dev, "Invalid fan clock divider %lu, choose one " | |
320 | "of 1, 2, 4 or 8\n", val); | |
321 | return -EINVAL; | |
322 | } | |
323 | ||
9a61bf63 | 324 | mutex_lock(&data->update_lock); |
28292e79 | 325 | regvalue = gl518_read_value(client, GL518_REG_MISC); |
21df67b1 | 326 | data->fan_div[nr] = val; |
28292e79 JD |
327 | regvalue = (regvalue & ~(0xc0 >> (2 * nr))) |
328 | | (data->fan_div[nr] << (6 - 2 * nr)); | |
329 | gl518_write_value(client, GL518_REG_MISC, regvalue); | |
9a61bf63 | 330 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
331 | return count; |
332 | } | |
333 | ||
334 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); | |
335 | static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); | |
336 | static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, | |
337 | show_temp_hyst1, set_temp_hyst1); | |
338 | static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); | |
28292e79 JD |
339 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); |
340 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); | |
341 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, | |
342 | show_fan_min, set_fan_min, 0); | |
343 | static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, | |
344 | show_fan_min, set_fan_min, 1); | |
345 | static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, | |
346 | show_fan_div, set_fan_div, 0); | |
347 | static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, | |
348 | show_fan_div, set_fan_div, 1); | |
1da177e4 LT |
349 | static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); |
350 | static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); | |
351 | static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); | |
352 | static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); | |
353 | static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); | |
354 | static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); | |
355 | static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); | |
356 | static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); | |
357 | static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); | |
358 | static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); | |
359 | static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); | |
360 | static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); | |
361 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
362 | static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, | |
363 | show_beep_enable, set_beep_enable); | |
364 | static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, | |
365 | show_beep_mask, set_beep_mask); | |
366 | ||
da6848da JD |
367 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
368 | char *buf) | |
369 | { | |
370 | int bitnr = to_sensor_dev_attr(attr)->index; | |
371 | struct gl518_data *data = gl518_update_device(dev); | |
372 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
373 | } | |
374 | ||
375 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
376 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
377 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
378 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
379 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
380 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5); | |
381 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6); | |
382 | ||
383 | static ssize_t show_beep(struct device *dev, struct device_attribute *attr, | |
384 | char *buf) | |
385 | { | |
386 | int bitnr = to_sensor_dev_attr(attr)->index; | |
387 | struct gl518_data *data = gl518_update_device(dev); | |
388 | return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); | |
389 | } | |
390 | ||
391 | static ssize_t set_beep(struct device *dev, struct device_attribute *attr, | |
392 | const char *buf, size_t count) | |
393 | { | |
394 | struct i2c_client *client = to_i2c_client(dev); | |
395 | struct gl518_data *data = i2c_get_clientdata(client); | |
396 | int bitnr = to_sensor_dev_attr(attr)->index; | |
397 | unsigned long bit; | |
398 | ||
399 | bit = simple_strtoul(buf, NULL, 10); | |
400 | if (bit & ~1) | |
401 | return -EINVAL; | |
402 | ||
403 | mutex_lock(&data->update_lock); | |
404 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
405 | if (bit) | |
406 | data->beep_mask |= (1 << bitnr); | |
407 | else | |
408 | data->beep_mask &= ~(1 << bitnr); | |
409 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
410 | mutex_unlock(&data->update_lock); | |
411 | return count; | |
412 | } | |
413 | ||
414 | static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 0); | |
415 | static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 1); | |
416 | static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 2); | |
417 | static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 3); | |
418 | static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 4); | |
419 | static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 5); | |
420 | static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 6); | |
421 | ||
87808be4 | 422 | static struct attribute *gl518_attributes[] = { |
87808be4 JD |
423 | &dev_attr_in3_input.attr, |
424 | &dev_attr_in0_min.attr, | |
425 | &dev_attr_in1_min.attr, | |
426 | &dev_attr_in2_min.attr, | |
427 | &dev_attr_in3_min.attr, | |
428 | &dev_attr_in0_max.attr, | |
429 | &dev_attr_in1_max.attr, | |
430 | &dev_attr_in2_max.attr, | |
431 | &dev_attr_in3_max.attr, | |
da6848da JD |
432 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
433 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
434 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
435 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
436 | &sensor_dev_attr_in0_beep.dev_attr.attr, | |
437 | &sensor_dev_attr_in1_beep.dev_attr.attr, | |
438 | &sensor_dev_attr_in2_beep.dev_attr.attr, | |
439 | &sensor_dev_attr_in3_beep.dev_attr.attr, | |
87808be4 JD |
440 | |
441 | &dev_attr_fan1_auto.attr, | |
28292e79 JD |
442 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
443 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
444 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
445 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
446 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
447 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
da6848da JD |
448 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
449 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
450 | &sensor_dev_attr_fan1_beep.dev_attr.attr, | |
451 | &sensor_dev_attr_fan2_beep.dev_attr.attr, | |
87808be4 JD |
452 | |
453 | &dev_attr_temp1_input.attr, | |
454 | &dev_attr_temp1_max.attr, | |
455 | &dev_attr_temp1_max_hyst.attr, | |
da6848da JD |
456 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
457 | &sensor_dev_attr_temp1_beep.dev_attr.attr, | |
87808be4 JD |
458 | |
459 | &dev_attr_alarms.attr, | |
460 | &dev_attr_beep_enable.attr, | |
461 | &dev_attr_beep_mask.attr, | |
462 | NULL | |
463 | }; | |
464 | ||
465 | static const struct attribute_group gl518_group = { | |
466 | .attrs = gl518_attributes, | |
467 | }; | |
468 | ||
5314f5c1 JD |
469 | static struct attribute *gl518_attributes_r80[] = { |
470 | &dev_attr_in0_input.attr, | |
471 | &dev_attr_in1_input.attr, | |
472 | &dev_attr_in2_input.attr, | |
473 | NULL | |
474 | }; | |
475 | ||
476 | static const struct attribute_group gl518_group_r80 = { | |
477 | .attrs = gl518_attributes_r80, | |
478 | }; | |
479 | ||
1da177e4 LT |
480 | /* |
481 | * Real code | |
482 | */ | |
483 | ||
95d80e7c | 484 | /* Return 0 if detection is successful, -ENODEV otherwise */ |
310ec792 | 485 | static int gl518_detect(struct i2c_client *client, struct i2c_board_info *info) |
1da177e4 | 486 | { |
95d80e7c | 487 | struct i2c_adapter *adapter = client->adapter; |
52df6440 | 488 | int rev; |
1da177e4 LT |
489 | |
490 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
491 | I2C_FUNC_SMBUS_WORD_DATA)) | |
95d80e7c | 492 | return -ENODEV; |
1da177e4 LT |
493 | |
494 | /* Now, we do the remaining detection. */ | |
52df6440 JD |
495 | if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80) |
496 | || (gl518_read_value(client, GL518_REG_CONF) & 0x80)) | |
497 | return -ENODEV; | |
1da177e4 LT |
498 | |
499 | /* Determine the chip type. */ | |
52df6440 JD |
500 | rev = gl518_read_value(client, GL518_REG_REVISION); |
501 | if (rev != 0x00 && rev != 0x80) | |
502 | return -ENODEV; | |
1da177e4 | 503 | |
95d80e7c | 504 | strlcpy(info->type, "gl518sm", I2C_NAME_SIZE); |
1da177e4 | 505 | |
95d80e7c JD |
506 | return 0; |
507 | } | |
508 | ||
509 | static int gl518_probe(struct i2c_client *client, | |
510 | const struct i2c_device_id *id) | |
511 | { | |
512 | struct gl518_data *data; | |
513 | int err, revision; | |
514 | ||
515 | data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL); | |
516 | if (!data) { | |
517 | err = -ENOMEM; | |
518 | goto exit; | |
519 | } | |
520 | ||
521 | i2c_set_clientdata(client, data); | |
522 | revision = gl518_read_value(client, GL518_REG_REVISION); | |
523 | data->type = revision == 0x80 ? gl518sm_r80 : gl518sm_r00; | |
524 | mutex_init(&data->update_lock); | |
1da177e4 LT |
525 | |
526 | /* Initialize the GL518SM chip */ | |
527 | data->alarm_mask = 0xff; | |
a5955ed2 | 528 | gl518_init_client(client); |
1da177e4 LT |
529 | |
530 | /* Register sysfs hooks */ | |
a5955ed2 | 531 | if ((err = sysfs_create_group(&client->dev.kobj, &gl518_group))) |
95d80e7c | 532 | goto exit_free; |
5314f5c1 JD |
533 | if (data->type == gl518sm_r80) |
534 | if ((err = sysfs_create_group(&client->dev.kobj, | |
535 | &gl518_group_r80))) | |
536 | goto exit_remove_files; | |
87808be4 | 537 | |
a5955ed2 | 538 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
539 | if (IS_ERR(data->hwmon_dev)) { |
540 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 541 | goto exit_remove_files; |
943b0830 MH |
542 | } |
543 | ||
1da177e4 LT |
544 | return 0; |
545 | ||
87808be4 | 546 | exit_remove_files: |
a5955ed2 | 547 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
5314f5c1 JD |
548 | if (data->type == gl518sm_r80) |
549 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
1da177e4 LT |
550 | exit_free: |
551 | kfree(data); | |
552 | exit: | |
553 | return err; | |
554 | } | |
555 | ||
556 | ||
557 | /* Called when we have found a new GL518SM. | |
558 | Note that we preserve D4:NoFan2 and D2:beep_enable. */ | |
559 | static void gl518_init_client(struct i2c_client *client) | |
560 | { | |
561 | /* Make sure we leave D7:Reset untouched */ | |
562 | u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; | |
563 | ||
564 | /* Comparator mode (D3=0), standby mode (D6=0) */ | |
565 | gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); | |
566 | ||
567 | /* Never interrupts */ | |
568 | gl518_write_value(client, GL518_REG_MASK, 0x00); | |
569 | ||
570 | /* Clear status register (D5=1), start (D6=1) */ | |
571 | gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); | |
572 | gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); | |
573 | } | |
574 | ||
95d80e7c | 575 | static int gl518_remove(struct i2c_client *client) |
1da177e4 | 576 | { |
943b0830 | 577 | struct gl518_data *data = i2c_get_clientdata(client); |
1da177e4 | 578 | |
1beeffe4 | 579 | hwmon_device_unregister(data->hwmon_dev); |
87808be4 | 580 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
5314f5c1 JD |
581 | if (data->type == gl518sm_r80) |
582 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
943b0830 | 583 | |
943b0830 | 584 | kfree(data); |
1da177e4 LT |
585 | return 0; |
586 | } | |
587 | ||
a5955ed2 | 588 | /* Registers 0x07 to 0x0c are word-sized, others are byte-sized |
1da177e4 | 589 | GL518 uses a high-byte first convention, which is exactly opposite to |
a5955ed2 | 590 | the SMBus standard. */ |
1da177e4 LT |
591 | static int gl518_read_value(struct i2c_client *client, u8 reg) |
592 | { | |
593 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
594 | return swab16(i2c_smbus_read_word_data(client, reg)); | |
595 | else | |
596 | return i2c_smbus_read_byte_data(client, reg); | |
597 | } | |
598 | ||
1da177e4 LT |
599 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) |
600 | { | |
601 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
602 | return i2c_smbus_write_word_data(client, reg, swab16(value)); | |
603 | else | |
604 | return i2c_smbus_write_byte_data(client, reg, value); | |
605 | } | |
606 | ||
607 | static struct gl518_data *gl518_update_device(struct device *dev) | |
608 | { | |
609 | struct i2c_client *client = to_i2c_client(dev); | |
610 | struct gl518_data *data = i2c_get_clientdata(client); | |
611 | int val; | |
612 | ||
9a61bf63 | 613 | mutex_lock(&data->update_lock); |
1da177e4 LT |
614 | |
615 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
616 | || !data->valid) { | |
617 | dev_dbg(&client->dev, "Starting gl518 update\n"); | |
618 | ||
619 | data->alarms = gl518_read_value(client, GL518_REG_INT); | |
620 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
621 | ||
622 | val = gl518_read_value(client, GL518_REG_VDD_LIMIT); | |
623 | data->voltage_min[0] = val & 0xff; | |
624 | data->voltage_max[0] = (val >> 8) & 0xff; | |
625 | val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); | |
626 | data->voltage_min[1] = val & 0xff; | |
627 | data->voltage_max[1] = (val >> 8) & 0xff; | |
628 | val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); | |
629 | data->voltage_min[2] = val & 0xff; | |
630 | data->voltage_max[2] = (val >> 8) & 0xff; | |
631 | val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); | |
632 | data->voltage_min[3] = val & 0xff; | |
633 | data->voltage_max[3] = (val >> 8) & 0xff; | |
634 | ||
635 | val = gl518_read_value(client, GL518_REG_FAN_COUNT); | |
636 | data->fan_in[0] = (val >> 8) & 0xff; | |
637 | data->fan_in[1] = val & 0xff; | |
638 | ||
639 | val = gl518_read_value(client, GL518_REG_FAN_LIMIT); | |
640 | data->fan_min[0] = (val >> 8) & 0xff; | |
641 | data->fan_min[1] = val & 0xff; | |
642 | ||
643 | data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); | |
644 | data->temp_max = | |
645 | gl518_read_value(client, GL518_REG_TEMP_MAX); | |
646 | data->temp_hyst = | |
647 | gl518_read_value(client, GL518_REG_TEMP_HYST); | |
648 | ||
649 | val = gl518_read_value(client, GL518_REG_MISC); | |
650 | data->fan_div[0] = (val >> 6) & 0x03; | |
651 | data->fan_div[1] = (val >> 4) & 0x03; | |
652 | data->fan_auto1 = (val >> 3) & 0x01; | |
653 | ||
654 | data->alarms &= data->alarm_mask; | |
655 | ||
656 | val = gl518_read_value(client, GL518_REG_CONF); | |
657 | data->beep_enable = (val >> 2) & 1; | |
658 | ||
659 | if (data->type != gl518sm_r00) { | |
660 | data->voltage_in[0] = | |
661 | gl518_read_value(client, GL518_REG_VDD); | |
662 | data->voltage_in[1] = | |
663 | gl518_read_value(client, GL518_REG_VIN1); | |
664 | data->voltage_in[2] = | |
665 | gl518_read_value(client, GL518_REG_VIN2); | |
666 | } | |
667 | data->voltage_in[3] = | |
668 | gl518_read_value(client, GL518_REG_VIN3); | |
669 | ||
670 | data->last_updated = jiffies; | |
671 | data->valid = 1; | |
672 | } | |
673 | ||
9a61bf63 | 674 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
675 | |
676 | return data; | |
677 | } | |
678 | ||
679 | static int __init sensors_gl518sm_init(void) | |
680 | { | |
681 | return i2c_add_driver(&gl518_driver); | |
682 | } | |
683 | ||
684 | static void __exit sensors_gl518sm_exit(void) | |
685 | { | |
686 | i2c_del_driver(&gl518_driver); | |
687 | } | |
688 | ||
689 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
690 | "Kyosti Malkki <kmalkki@cc.hut.fi> and " | |
691 | "Hong-Gunn Chew <hglinux@gunnet.org>"); | |
692 | MODULE_DESCRIPTION("GL518SM driver"); | |
693 | MODULE_LICENSE("GPL"); | |
694 | ||
695 | module_init(sensors_gl518sm_init); | |
696 | module_exit(sensors_gl518sm_exit); |