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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 LT |
48 | |
49 | /* Insmod parameters */ | |
f4b50261 | 50 | I2C_CLIENT_INSMOD_2(gl518sm_r00, gl518sm_r80); |
1da177e4 LT |
51 | |
52 | /* Many GL518 constants specified below */ | |
53 | ||
54 | /* The GL518 registers */ | |
55 | #define GL518_REG_CHIP_ID 0x00 | |
56 | #define GL518_REG_REVISION 0x01 | |
57 | #define GL518_REG_VENDOR_ID 0x02 | |
58 | #define GL518_REG_CONF 0x03 | |
59 | #define GL518_REG_TEMP_IN 0x04 | |
60 | #define GL518_REG_TEMP_MAX 0x05 | |
61 | #define GL518_REG_TEMP_HYST 0x06 | |
62 | #define GL518_REG_FAN_COUNT 0x07 | |
63 | #define GL518_REG_FAN_LIMIT 0x08 | |
64 | #define GL518_REG_VIN1_LIMIT 0x09 | |
65 | #define GL518_REG_VIN2_LIMIT 0x0a | |
66 | #define GL518_REG_VIN3_LIMIT 0x0b | |
67 | #define GL518_REG_VDD_LIMIT 0x0c | |
68 | #define GL518_REG_VIN3 0x0d | |
69 | #define GL518_REG_MISC 0x0f | |
70 | #define GL518_REG_ALARM 0x10 | |
71 | #define GL518_REG_MASK 0x11 | |
72 | #define GL518_REG_INT 0x12 | |
73 | #define GL518_REG_VIN2 0x13 | |
74 | #define GL518_REG_VIN1 0x14 | |
75 | #define GL518_REG_VDD 0x15 | |
76 | ||
77 | ||
78 | /* | |
79 | * Conversions. Rounding and limit checking is only done on the TO_REG | |
80 | * variants. Note that you should be a bit careful with which arguments | |
81 | * these macros are called: arguments may be evaluated more than once. | |
82 | * Fixing this is just not worth it. | |
83 | */ | |
84 | ||
85 | #define RAW_FROM_REG(val) val | |
86 | ||
87 | #define BOOL_FROM_REG(val) ((val)?0:1) | |
88 | #define BOOL_TO_REG(val) ((val)?0:1) | |
89 | ||
90 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \ | |
91 | (val)-500:(val)+500)/1000)+119),0,255)) | |
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; | |
72240307 JD |
99 | rpmdiv = SENSORS_LIMIT(rpm, 1, 960000) * div; |
100 | return SENSORS_LIMIT((480000 + rpmdiv / 2) / rpmdiv, 1, 255); | |
1da177e4 | 101 | } |
72240307 | 102 | #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val)*(div)))) |
1da177e4 LT |
103 | |
104 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) | |
105 | #define IN_FROM_REG(val) ((val)*19) | |
106 | ||
107 | #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) | |
108 | #define VDD_FROM_REG(val) (((val)*95+2)/4) | |
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 { | |
117 | struct i2c_client client; | |
1beeffe4 | 118 | struct device *hwmon_dev; |
1da177e4 LT |
119 | enum chips type; |
120 | ||
9a61bf63 | 121 | struct mutex update_lock; |
1da177e4 LT |
122 | char valid; /* !=0 if following fields are valid */ |
123 | unsigned long last_updated; /* In jiffies */ | |
124 | ||
125 | u8 voltage_in[4]; /* Register values; [0] = VDD */ | |
126 | u8 voltage_min[4]; /* Register values; [0] = VDD */ | |
127 | u8 voltage_max[4]; /* Register values; [0] = VDD */ | |
1da177e4 LT |
128 | u8 fan_in[2]; |
129 | u8 fan_min[2]; | |
130 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
131 | u8 fan_auto1; /* Boolean */ | |
132 | u8 temp_in; /* Register values */ | |
133 | u8 temp_max; /* Register values */ | |
134 | u8 temp_hyst; /* Register values */ | |
135 | u8 alarms; /* Register value */ | |
a5955ed2 | 136 | u8 alarm_mask; |
1da177e4 LT |
137 | u8 beep_mask; /* Register value */ |
138 | u8 beep_enable; /* Boolean */ | |
139 | }; | |
140 | ||
141 | static int gl518_attach_adapter(struct i2c_adapter *adapter); | |
142 | static int gl518_detect(struct i2c_adapter *adapter, int address, int kind); | |
143 | static void gl518_init_client(struct i2c_client *client); | |
144 | static int gl518_detach_client(struct i2c_client *client); | |
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 | ||
149 | /* This is the driver that will be inserted */ | |
150 | static struct i2c_driver gl518_driver = { | |
cdaf7934 | 151 | .driver = { |
cdaf7934 LR |
152 | .name = "gl518sm", |
153 | }, | |
1da177e4 LT |
154 | .attach_adapter = gl518_attach_adapter, |
155 | .detach_client = gl518_detach_client, | |
156 | }; | |
157 | ||
158 | /* | |
159 | * Sysfs stuff | |
160 | */ | |
161 | ||
162 | #define show(type, suffix, value) \ | |
30f74292 | 163 | static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ |
1da177e4 LT |
164 | { \ |
165 | struct gl518_data *data = gl518_update_device(dev); \ | |
166 | return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ | |
167 | } | |
168 | ||
1da177e4 LT |
169 | show(TEMP, temp_input1, temp_in); |
170 | show(TEMP, temp_max1, temp_max); | |
171 | show(TEMP, temp_hyst1, temp_hyst); | |
172 | show(BOOL, fan_auto1, fan_auto1); | |
1da177e4 LT |
173 | show(VDD, in_input0, voltage_in[0]); |
174 | show(IN, in_input1, voltage_in[1]); | |
175 | show(IN, in_input2, voltage_in[2]); | |
176 | show(IN, in_input3, voltage_in[3]); | |
177 | show(VDD, in_min0, voltage_min[0]); | |
178 | show(IN, in_min1, voltage_min[1]); | |
179 | show(IN, in_min2, voltage_min[2]); | |
180 | show(IN, in_min3, voltage_min[3]); | |
181 | show(VDD, in_max0, voltage_max[0]); | |
182 | show(IN, in_max1, voltage_max[1]); | |
183 | show(IN, in_max2, voltage_max[2]); | |
184 | show(IN, in_max3, voltage_max[3]); | |
185 | show(RAW, alarms, alarms); | |
186 | show(BOOL, beep_enable, beep_enable); | |
187 | show(BEEP_MASK, beep_mask, beep_mask); | |
188 | ||
28292e79 JD |
189 | static ssize_t show_fan_input(struct device *dev, |
190 | struct device_attribute *attr, char *buf) | |
191 | { | |
192 | int nr = to_sensor_dev_attr(attr)->index; | |
193 | struct gl518_data *data = gl518_update_device(dev); | |
194 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr], | |
195 | DIV_FROM_REG(data->fan_div[nr]))); | |
196 | } | |
197 | ||
198 | static ssize_t show_fan_min(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_min[nr], | |
204 | DIV_FROM_REG(data->fan_div[nr]))); | |
205 | } | |
206 | ||
207 | static ssize_t show_fan_div(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", DIV_FROM_REG(data->fan_div[nr])); | |
213 | } | |
214 | ||
1da177e4 | 215 | #define set(type, suffix, value, reg) \ |
30f74292 | 216 | static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
1da177e4 LT |
217 | size_t count) \ |
218 | { \ | |
219 | struct i2c_client *client = to_i2c_client(dev); \ | |
220 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
221 | long val = simple_strtol(buf, NULL, 10); \ | |
222 | \ | |
9a61bf63 | 223 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
224 | data->value = type##_TO_REG(val); \ |
225 | gl518_write_value(client, reg, data->value); \ | |
9a61bf63 | 226 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
227 | return count; \ |
228 | } | |
229 | ||
230 | #define set_bits(type, suffix, value, reg, mask, shift) \ | |
30f74292 | 231 | static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
1da177e4 LT |
232 | size_t count) \ |
233 | { \ | |
234 | struct i2c_client *client = to_i2c_client(dev); \ | |
235 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
236 | int regvalue; \ | |
237 | unsigned long val = simple_strtoul(buf, NULL, 10); \ | |
238 | \ | |
9a61bf63 | 239 | mutex_lock(&data->update_lock); \ |
1da177e4 LT |
240 | regvalue = gl518_read_value(client, reg); \ |
241 | data->value = type##_TO_REG(val); \ | |
242 | regvalue = (regvalue & ~mask) | (data->value << shift); \ | |
243 | gl518_write_value(client, reg, regvalue); \ | |
9a61bf63 | 244 | mutex_unlock(&data->update_lock); \ |
1da177e4 LT |
245 | return count; \ |
246 | } | |
247 | ||
248 | #define set_low(type, suffix, value, reg) \ | |
249 | set_bits(type, suffix, value, reg, 0x00ff, 0) | |
250 | #define set_high(type, suffix, value, reg) \ | |
251 | set_bits(type, suffix, value, reg, 0xff00, 8) | |
252 | ||
253 | set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); | |
254 | set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); | |
255 | set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); | |
1da177e4 LT |
256 | set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); |
257 | set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); | |
258 | set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); | |
259 | set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); | |
260 | set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); | |
261 | set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); | |
262 | set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); | |
263 | set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); | |
264 | set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); | |
265 | set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); | |
266 | ||
28292e79 JD |
267 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
268 | const char *buf, size_t count) | |
1da177e4 LT |
269 | { |
270 | struct i2c_client *client = to_i2c_client(dev); | |
271 | struct gl518_data *data = i2c_get_clientdata(client); | |
28292e79 | 272 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
273 | int regvalue; |
274 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
275 | ||
9a61bf63 | 276 | mutex_lock(&data->update_lock); |
1da177e4 | 277 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
28292e79 JD |
278 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
279 | regvalue = (regvalue & (0xff << (8 * nr))) | |
280 | | (data->fan_min[nr] << (8 * (1 - nr))); | |
1da177e4 LT |
281 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
282 | ||
283 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
28292e79 JD |
284 | if (data->fan_min[nr] == 0) |
285 | data->alarm_mask &= ~(0x20 << nr); | |
1da177e4 | 286 | else |
28292e79 | 287 | data->alarm_mask |= (0x20 << nr); |
1da177e4 LT |
288 | data->beep_mask &= data->alarm_mask; |
289 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
290 | ||
9a61bf63 | 291 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
292 | return count; |
293 | } | |
294 | ||
28292e79 JD |
295 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
296 | const char *buf, size_t count) | |
1da177e4 LT |
297 | { |
298 | struct i2c_client *client = to_i2c_client(dev); | |
299 | struct gl518_data *data = i2c_get_clientdata(client); | |
28292e79 | 300 | int nr = to_sensor_dev_attr(attr)->index; |
1da177e4 LT |
301 | int regvalue; |
302 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
303 | ||
21df67b1 JD |
304 | switch (val) { |
305 | case 1: val = 0; break; | |
306 | case 2: val = 1; break; | |
307 | case 4: val = 2; break; | |
308 | case 8: val = 3; break; | |
309 | default: | |
310 | dev_err(dev, "Invalid fan clock divider %lu, choose one " | |
311 | "of 1, 2, 4 or 8\n", val); | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
9a61bf63 | 315 | mutex_lock(&data->update_lock); |
28292e79 | 316 | regvalue = gl518_read_value(client, GL518_REG_MISC); |
21df67b1 | 317 | data->fan_div[nr] = val; |
28292e79 JD |
318 | regvalue = (regvalue & ~(0xc0 >> (2 * nr))) |
319 | | (data->fan_div[nr] << (6 - 2 * nr)); | |
320 | gl518_write_value(client, GL518_REG_MISC, regvalue); | |
9a61bf63 | 321 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
322 | return count; |
323 | } | |
324 | ||
325 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); | |
326 | static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); | |
327 | static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, | |
328 | show_temp_hyst1, set_temp_hyst1); | |
329 | static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); | |
28292e79 JD |
330 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); |
331 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); | |
332 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, | |
333 | show_fan_min, set_fan_min, 0); | |
334 | static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, | |
335 | show_fan_min, set_fan_min, 1); | |
336 | static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, | |
337 | show_fan_div, set_fan_div, 0); | |
338 | static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, | |
339 | show_fan_div, set_fan_div, 1); | |
1da177e4 LT |
340 | static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); |
341 | static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); | |
342 | static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); | |
343 | static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); | |
344 | static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); | |
345 | static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); | |
346 | static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); | |
347 | static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); | |
348 | static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); | |
349 | static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); | |
350 | static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); | |
351 | static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); | |
352 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
353 | static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, | |
354 | show_beep_enable, set_beep_enable); | |
355 | static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, | |
356 | show_beep_mask, set_beep_mask); | |
357 | ||
da6848da JD |
358 | static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
359 | char *buf) | |
360 | { | |
361 | int bitnr = to_sensor_dev_attr(attr)->index; | |
362 | struct gl518_data *data = gl518_update_device(dev); | |
363 | return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); | |
364 | } | |
365 | ||
366 | static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); | |
367 | static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); | |
368 | static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); | |
369 | static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); | |
370 | static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); | |
371 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 5); | |
372 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 6); | |
373 | ||
374 | static ssize_t show_beep(struct device *dev, struct device_attribute *attr, | |
375 | char *buf) | |
376 | { | |
377 | int bitnr = to_sensor_dev_attr(attr)->index; | |
378 | struct gl518_data *data = gl518_update_device(dev); | |
379 | return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); | |
380 | } | |
381 | ||
382 | static ssize_t set_beep(struct device *dev, struct device_attribute *attr, | |
383 | const char *buf, size_t count) | |
384 | { | |
385 | struct i2c_client *client = to_i2c_client(dev); | |
386 | struct gl518_data *data = i2c_get_clientdata(client); | |
387 | int bitnr = to_sensor_dev_attr(attr)->index; | |
388 | unsigned long bit; | |
389 | ||
390 | bit = simple_strtoul(buf, NULL, 10); | |
391 | if (bit & ~1) | |
392 | return -EINVAL; | |
393 | ||
394 | mutex_lock(&data->update_lock); | |
395 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
396 | if (bit) | |
397 | data->beep_mask |= (1 << bitnr); | |
398 | else | |
399 | data->beep_mask &= ~(1 << bitnr); | |
400 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
401 | mutex_unlock(&data->update_lock); | |
402 | return count; | |
403 | } | |
404 | ||
405 | static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 0); | |
406 | static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 1); | |
407 | static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 2); | |
408 | static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 3); | |
409 | static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 4); | |
410 | static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 5); | |
411 | static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_beep, set_beep, 6); | |
412 | ||
87808be4 | 413 | static struct attribute *gl518_attributes[] = { |
87808be4 JD |
414 | &dev_attr_in3_input.attr, |
415 | &dev_attr_in0_min.attr, | |
416 | &dev_attr_in1_min.attr, | |
417 | &dev_attr_in2_min.attr, | |
418 | &dev_attr_in3_min.attr, | |
419 | &dev_attr_in0_max.attr, | |
420 | &dev_attr_in1_max.attr, | |
421 | &dev_attr_in2_max.attr, | |
422 | &dev_attr_in3_max.attr, | |
da6848da JD |
423 | &sensor_dev_attr_in0_alarm.dev_attr.attr, |
424 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
425 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
426 | &sensor_dev_attr_in3_alarm.dev_attr.attr, | |
427 | &sensor_dev_attr_in0_beep.dev_attr.attr, | |
428 | &sensor_dev_attr_in1_beep.dev_attr.attr, | |
429 | &sensor_dev_attr_in2_beep.dev_attr.attr, | |
430 | &sensor_dev_attr_in3_beep.dev_attr.attr, | |
87808be4 JD |
431 | |
432 | &dev_attr_fan1_auto.attr, | |
28292e79 JD |
433 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
434 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
435 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
436 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
437 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
438 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
da6848da JD |
439 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
440 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
441 | &sensor_dev_attr_fan1_beep.dev_attr.attr, | |
442 | &sensor_dev_attr_fan2_beep.dev_attr.attr, | |
87808be4 JD |
443 | |
444 | &dev_attr_temp1_input.attr, | |
445 | &dev_attr_temp1_max.attr, | |
446 | &dev_attr_temp1_max_hyst.attr, | |
da6848da JD |
447 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
448 | &sensor_dev_attr_temp1_beep.dev_attr.attr, | |
87808be4 JD |
449 | |
450 | &dev_attr_alarms.attr, | |
451 | &dev_attr_beep_enable.attr, | |
452 | &dev_attr_beep_mask.attr, | |
453 | NULL | |
454 | }; | |
455 | ||
456 | static const struct attribute_group gl518_group = { | |
457 | .attrs = gl518_attributes, | |
458 | }; | |
459 | ||
5314f5c1 JD |
460 | static struct attribute *gl518_attributes_r80[] = { |
461 | &dev_attr_in0_input.attr, | |
462 | &dev_attr_in1_input.attr, | |
463 | &dev_attr_in2_input.attr, | |
464 | NULL | |
465 | }; | |
466 | ||
467 | static const struct attribute_group gl518_group_r80 = { | |
468 | .attrs = gl518_attributes_r80, | |
469 | }; | |
470 | ||
1da177e4 LT |
471 | /* |
472 | * Real code | |
473 | */ | |
474 | ||
475 | static int gl518_attach_adapter(struct i2c_adapter *adapter) | |
476 | { | |
477 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
478 | return 0; | |
2ed2dc3c | 479 | return i2c_probe(adapter, &addr_data, gl518_detect); |
1da177e4 LT |
480 | } |
481 | ||
482 | static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) | |
483 | { | |
484 | int i; | |
a5955ed2 | 485 | struct i2c_client *client; |
1da177e4 LT |
486 | struct gl518_data *data; |
487 | int err = 0; | |
488 | ||
489 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
490 | I2C_FUNC_SMBUS_WORD_DATA)) | |
491 | goto exit; | |
492 | ||
493 | /* OK. For now, we presume we have a valid client. We now create the | |
494 | client structure, even though we cannot fill it completely yet. | |
495 | But it allows us to access gl518_{read,write}_value. */ | |
496 | ||
ba9c2e8d | 497 | if (!(data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL))) { |
1da177e4 LT |
498 | err = -ENOMEM; |
499 | goto exit; | |
500 | } | |
1da177e4 | 501 | |
a5955ed2 JD |
502 | client = &data->client; |
503 | i2c_set_clientdata(client, data); | |
1da177e4 | 504 | |
a5955ed2 JD |
505 | client->addr = address; |
506 | client->adapter = adapter; | |
507 | client->driver = &gl518_driver; | |
1da177e4 LT |
508 | |
509 | /* Now, we do the remaining detection. */ | |
510 | ||
511 | if (kind < 0) { | |
a5955ed2 JD |
512 | if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80) |
513 | || (gl518_read_value(client, GL518_REG_CONF) & 0x80)) | |
1da177e4 LT |
514 | goto exit_free; |
515 | } | |
516 | ||
517 | /* Determine the chip type. */ | |
518 | if (kind <= 0) { | |
a5955ed2 | 519 | i = gl518_read_value(client, GL518_REG_REVISION); |
1da177e4 LT |
520 | if (i == 0x00) { |
521 | kind = gl518sm_r00; | |
522 | } else if (i == 0x80) { | |
523 | kind = gl518sm_r80; | |
524 | } else { | |
525 | if (kind <= 0) | |
526 | dev_info(&adapter->dev, | |
527 | "Ignoring 'force' parameter for unknown " | |
528 | "chip at adapter %d, address 0x%02x\n", | |
529 | i2c_adapter_id(adapter), address); | |
530 | goto exit_free; | |
531 | } | |
532 | } | |
533 | ||
534 | /* Fill in the remaining client fields */ | |
a5955ed2 | 535 | strlcpy(client->name, "gl518sm", I2C_NAME_SIZE); |
1da177e4 | 536 | data->type = kind; |
9a61bf63 | 537 | mutex_init(&data->update_lock); |
1da177e4 LT |
538 | |
539 | /* Tell the I2C layer a new client has arrived */ | |
a5955ed2 | 540 | if ((err = i2c_attach_client(client))) |
1da177e4 LT |
541 | goto exit_free; |
542 | ||
543 | /* Initialize the GL518SM chip */ | |
544 | data->alarm_mask = 0xff; | |
a5955ed2 | 545 | gl518_init_client(client); |
1da177e4 LT |
546 | |
547 | /* Register sysfs hooks */ | |
a5955ed2 | 548 | if ((err = sysfs_create_group(&client->dev.kobj, &gl518_group))) |
87808be4 | 549 | goto exit_detach; |
5314f5c1 JD |
550 | if (data->type == gl518sm_r80) |
551 | if ((err = sysfs_create_group(&client->dev.kobj, | |
552 | &gl518_group_r80))) | |
553 | goto exit_remove_files; | |
87808be4 | 554 | |
a5955ed2 | 555 | data->hwmon_dev = hwmon_device_register(&client->dev); |
1beeffe4 TJ |
556 | if (IS_ERR(data->hwmon_dev)) { |
557 | err = PTR_ERR(data->hwmon_dev); | |
87808be4 | 558 | goto exit_remove_files; |
943b0830 MH |
559 | } |
560 | ||
1da177e4 LT |
561 | return 0; |
562 | ||
87808be4 | 563 | exit_remove_files: |
a5955ed2 | 564 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
5314f5c1 JD |
565 | if (data->type == gl518sm_r80) |
566 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
943b0830 | 567 | exit_detach: |
a5955ed2 | 568 | i2c_detach_client(client); |
1da177e4 LT |
569 | exit_free: |
570 | kfree(data); | |
571 | exit: | |
572 | return err; | |
573 | } | |
574 | ||
575 | ||
576 | /* Called when we have found a new GL518SM. | |
577 | Note that we preserve D4:NoFan2 and D2:beep_enable. */ | |
578 | static void gl518_init_client(struct i2c_client *client) | |
579 | { | |
580 | /* Make sure we leave D7:Reset untouched */ | |
581 | u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; | |
582 | ||
583 | /* Comparator mode (D3=0), standby mode (D6=0) */ | |
584 | gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); | |
585 | ||
586 | /* Never interrupts */ | |
587 | gl518_write_value(client, GL518_REG_MASK, 0x00); | |
588 | ||
589 | /* Clear status register (D5=1), start (D6=1) */ | |
590 | gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); | |
591 | gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); | |
592 | } | |
593 | ||
594 | static int gl518_detach_client(struct i2c_client *client) | |
595 | { | |
943b0830 | 596 | struct gl518_data *data = i2c_get_clientdata(client); |
1da177e4 LT |
597 | int err; |
598 | ||
1beeffe4 | 599 | hwmon_device_unregister(data->hwmon_dev); |
87808be4 | 600 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
5314f5c1 JD |
601 | if (data->type == gl518sm_r80) |
602 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
943b0830 | 603 | |
7bef5594 | 604 | if ((err = i2c_detach_client(client))) |
1da177e4 | 605 | return err; |
1da177e4 | 606 | |
943b0830 | 607 | kfree(data); |
1da177e4 LT |
608 | return 0; |
609 | } | |
610 | ||
a5955ed2 | 611 | /* Registers 0x07 to 0x0c are word-sized, others are byte-sized |
1da177e4 | 612 | GL518 uses a high-byte first convention, which is exactly opposite to |
a5955ed2 | 613 | the SMBus standard. */ |
1da177e4 LT |
614 | static int gl518_read_value(struct i2c_client *client, u8 reg) |
615 | { | |
616 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
617 | return swab16(i2c_smbus_read_word_data(client, reg)); | |
618 | else | |
619 | return i2c_smbus_read_byte_data(client, reg); | |
620 | } | |
621 | ||
1da177e4 LT |
622 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) |
623 | { | |
624 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
625 | return i2c_smbus_write_word_data(client, reg, swab16(value)); | |
626 | else | |
627 | return i2c_smbus_write_byte_data(client, reg, value); | |
628 | } | |
629 | ||
630 | static struct gl518_data *gl518_update_device(struct device *dev) | |
631 | { | |
632 | struct i2c_client *client = to_i2c_client(dev); | |
633 | struct gl518_data *data = i2c_get_clientdata(client); | |
634 | int val; | |
635 | ||
9a61bf63 | 636 | mutex_lock(&data->update_lock); |
1da177e4 LT |
637 | |
638 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
639 | || !data->valid) { | |
640 | dev_dbg(&client->dev, "Starting gl518 update\n"); | |
641 | ||
642 | data->alarms = gl518_read_value(client, GL518_REG_INT); | |
643 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
644 | ||
645 | val = gl518_read_value(client, GL518_REG_VDD_LIMIT); | |
646 | data->voltage_min[0] = val & 0xff; | |
647 | data->voltage_max[0] = (val >> 8) & 0xff; | |
648 | val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); | |
649 | data->voltage_min[1] = val & 0xff; | |
650 | data->voltage_max[1] = (val >> 8) & 0xff; | |
651 | val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); | |
652 | data->voltage_min[2] = val & 0xff; | |
653 | data->voltage_max[2] = (val >> 8) & 0xff; | |
654 | val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); | |
655 | data->voltage_min[3] = val & 0xff; | |
656 | data->voltage_max[3] = (val >> 8) & 0xff; | |
657 | ||
658 | val = gl518_read_value(client, GL518_REG_FAN_COUNT); | |
659 | data->fan_in[0] = (val >> 8) & 0xff; | |
660 | data->fan_in[1] = val & 0xff; | |
661 | ||
662 | val = gl518_read_value(client, GL518_REG_FAN_LIMIT); | |
663 | data->fan_min[0] = (val >> 8) & 0xff; | |
664 | data->fan_min[1] = val & 0xff; | |
665 | ||
666 | data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); | |
667 | data->temp_max = | |
668 | gl518_read_value(client, GL518_REG_TEMP_MAX); | |
669 | data->temp_hyst = | |
670 | gl518_read_value(client, GL518_REG_TEMP_HYST); | |
671 | ||
672 | val = gl518_read_value(client, GL518_REG_MISC); | |
673 | data->fan_div[0] = (val >> 6) & 0x03; | |
674 | data->fan_div[1] = (val >> 4) & 0x03; | |
675 | data->fan_auto1 = (val >> 3) & 0x01; | |
676 | ||
677 | data->alarms &= data->alarm_mask; | |
678 | ||
679 | val = gl518_read_value(client, GL518_REG_CONF); | |
680 | data->beep_enable = (val >> 2) & 1; | |
681 | ||
682 | if (data->type != gl518sm_r00) { | |
683 | data->voltage_in[0] = | |
684 | gl518_read_value(client, GL518_REG_VDD); | |
685 | data->voltage_in[1] = | |
686 | gl518_read_value(client, GL518_REG_VIN1); | |
687 | data->voltage_in[2] = | |
688 | gl518_read_value(client, GL518_REG_VIN2); | |
689 | } | |
690 | data->voltage_in[3] = | |
691 | gl518_read_value(client, GL518_REG_VIN3); | |
692 | ||
693 | data->last_updated = jiffies; | |
694 | data->valid = 1; | |
695 | } | |
696 | ||
9a61bf63 | 697 | mutex_unlock(&data->update_lock); |
1da177e4 LT |
698 | |
699 | return data; | |
700 | } | |
701 | ||
702 | static int __init sensors_gl518sm_init(void) | |
703 | { | |
704 | return i2c_add_driver(&gl518_driver); | |
705 | } | |
706 | ||
707 | static void __exit sensors_gl518sm_exit(void) | |
708 | { | |
709 | i2c_del_driver(&gl518_driver); | |
710 | } | |
711 | ||
712 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
713 | "Kyosti Malkki <kmalkki@cc.hut.fi> and " | |
714 | "Hong-Gunn Chew <hglinux@gunnet.org>"); | |
715 | MODULE_DESCRIPTION("GL518SM driver"); | |
716 | MODULE_LICENSE("GPL"); | |
717 | ||
718 | module_init(sensors_gl518sm_init); | |
719 | module_exit(sensors_gl518sm_exit); |