diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/i2c/chips/gl518sm.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/i2c/chips/gl518sm.c')
-rw-r--r-- | drivers/i2c/chips/gl518sm.c | 605 |
1 files changed, 605 insertions, 0 deletions
diff --git a/drivers/i2c/chips/gl518sm.c b/drivers/i2c/chips/gl518sm.c new file mode 100644 index 000000000000..c82d6ce21205 --- /dev/null +++ b/drivers/i2c/chips/gl518sm.c | |||
@@ -0,0 +1,605 @@ | |||
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. | ||
33 | * | ||
34 | * History: | ||
35 | * 2004-01-28 Original port. (Hong-Gunn Chew) | ||
36 | * 2004-01-31 Code review and approval. (Jean Delvare) | ||
37 | */ | ||
38 | |||
39 | #include <linux/config.h> | ||
40 | #include <linux/module.h> | ||
41 | #include <linux/init.h> | ||
42 | #include <linux/slab.h> | ||
43 | #include <linux/jiffies.h> | ||
44 | #include <linux/i2c.h> | ||
45 | #include <linux/i2c-sensor.h> | ||
46 | |||
47 | /* Addresses to scan */ | ||
48 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; | ||
49 | static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END }; | ||
50 | |||
51 | /* Insmod parameters */ | ||
52 | SENSORS_INSMOD_2(gl518sm_r00, gl518sm_r80); | ||
53 | |||
54 | /* Many GL518 constants specified below */ | ||
55 | |||
56 | /* The GL518 registers */ | ||
57 | #define GL518_REG_CHIP_ID 0x00 | ||
58 | #define GL518_REG_REVISION 0x01 | ||
59 | #define GL518_REG_VENDOR_ID 0x02 | ||
60 | #define GL518_REG_CONF 0x03 | ||
61 | #define GL518_REG_TEMP_IN 0x04 | ||
62 | #define GL518_REG_TEMP_MAX 0x05 | ||
63 | #define GL518_REG_TEMP_HYST 0x06 | ||
64 | #define GL518_REG_FAN_COUNT 0x07 | ||
65 | #define GL518_REG_FAN_LIMIT 0x08 | ||
66 | #define GL518_REG_VIN1_LIMIT 0x09 | ||
67 | #define GL518_REG_VIN2_LIMIT 0x0a | ||
68 | #define GL518_REG_VIN3_LIMIT 0x0b | ||
69 | #define GL518_REG_VDD_LIMIT 0x0c | ||
70 | #define GL518_REG_VIN3 0x0d | ||
71 | #define GL518_REG_MISC 0x0f | ||
72 | #define GL518_REG_ALARM 0x10 | ||
73 | #define GL518_REG_MASK 0x11 | ||
74 | #define GL518_REG_INT 0x12 | ||
75 | #define GL518_REG_VIN2 0x13 | ||
76 | #define GL518_REG_VIN1 0x14 | ||
77 | #define GL518_REG_VDD 0x15 | ||
78 | |||
79 | |||
80 | /* | ||
81 | * Conversions. Rounding and limit checking is only done on the TO_REG | ||
82 | * variants. Note that you should be a bit careful with which arguments | ||
83 | * these macros are called: arguments may be evaluated more than once. | ||
84 | * Fixing this is just not worth it. | ||
85 | */ | ||
86 | |||
87 | #define RAW_FROM_REG(val) val | ||
88 | |||
89 | #define BOOL_FROM_REG(val) ((val)?0:1) | ||
90 | #define BOOL_TO_REG(val) ((val)?0:1) | ||
91 | |||
92 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \ | ||
93 | (val)-500:(val)+500)/1000)+119),0,255)) | ||
94 | #define TEMP_FROM_REG(val) (((val) - 119) * 1000) | ||
95 | |||
96 | static inline u8 FAN_TO_REG(long rpm, int div) | ||
97 | { | ||
98 | long rpmdiv; | ||
99 | if (rpm == 0) | ||
100 | return 0; | ||
101 | rpmdiv = SENSORS_LIMIT(rpm, 1, 1920000) * div; | ||
102 | return SENSORS_LIMIT((960000 + rpmdiv / 2) / rpmdiv, 1, 255); | ||
103 | } | ||
104 | #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (960000/((val)*(div)))) | ||
105 | |||
106 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) | ||
107 | #define IN_FROM_REG(val) ((val)*19) | ||
108 | |||
109 | #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) | ||
110 | #define VDD_FROM_REG(val) (((val)*95+2)/4) | ||
111 | |||
112 | #define DIV_TO_REG(val) ((val)==4?2:(val)==2?1:(val)==1?0:3) | ||
113 | #define DIV_FROM_REG(val) (1 << (val)) | ||
114 | |||
115 | #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) | ||
116 | #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) | ||
117 | |||
118 | /* Each client has this additional data */ | ||
119 | struct gl518_data { | ||
120 | struct i2c_client client; | ||
121 | enum chips type; | ||
122 | |||
123 | struct semaphore update_lock; | ||
124 | char valid; /* !=0 if following fields are valid */ | ||
125 | unsigned long last_updated; /* In jiffies */ | ||
126 | |||
127 | u8 voltage_in[4]; /* Register values; [0] = VDD */ | ||
128 | u8 voltage_min[4]; /* Register values; [0] = VDD */ | ||
129 | u8 voltage_max[4]; /* Register values; [0] = VDD */ | ||
130 | u8 iter_voltage_in[4]; /* Register values; [0] = VDD */ | ||
131 | u8 fan_in[2]; | ||
132 | u8 fan_min[2]; | ||
133 | u8 fan_div[2]; /* Register encoding, shifted right */ | ||
134 | u8 fan_auto1; /* Boolean */ | ||
135 | u8 temp_in; /* Register values */ | ||
136 | u8 temp_max; /* Register values */ | ||
137 | u8 temp_hyst; /* Register values */ | ||
138 | u8 alarms; /* Register value */ | ||
139 | u8 alarm_mask; /* Register value */ | ||
140 | u8 beep_mask; /* Register value */ | ||
141 | u8 beep_enable; /* Boolean */ | ||
142 | }; | ||
143 | |||
144 | static int gl518_attach_adapter(struct i2c_adapter *adapter); | ||
145 | static int gl518_detect(struct i2c_adapter *adapter, int address, int kind); | ||
146 | static void gl518_init_client(struct i2c_client *client); | ||
147 | static int gl518_detach_client(struct i2c_client *client); | ||
148 | static int gl518_read_value(struct i2c_client *client, u8 reg); | ||
149 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value); | ||
150 | static struct gl518_data *gl518_update_device(struct device *dev); | ||
151 | |||
152 | /* This is the driver that will be inserted */ | ||
153 | static struct i2c_driver gl518_driver = { | ||
154 | .owner = THIS_MODULE, | ||
155 | .name = "gl518sm", | ||
156 | .id = I2C_DRIVERID_GL518, | ||
157 | .flags = I2C_DF_NOTIFY, | ||
158 | .attach_adapter = gl518_attach_adapter, | ||
159 | .detach_client = gl518_detach_client, | ||
160 | }; | ||
161 | |||
162 | /* | ||
163 | * Sysfs stuff | ||
164 | */ | ||
165 | |||
166 | #define show(type, suffix, value) \ | ||
167 | static ssize_t show_##suffix(struct device *dev, char *buf) \ | ||
168 | { \ | ||
169 | struct gl518_data *data = gl518_update_device(dev); \ | ||
170 | return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ | ||
171 | } | ||
172 | |||
173 | #define show_fan(suffix, value, index) \ | ||
174 | static ssize_t show_##suffix(struct device *dev, char *buf) \ | ||
175 | { \ | ||
176 | struct gl518_data *data = gl518_update_device(dev); \ | ||
177 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->value[index], \ | ||
178 | DIV_FROM_REG(data->fan_div[index]))); \ | ||
179 | } | ||
180 | |||
181 | show(TEMP, temp_input1, temp_in); | ||
182 | show(TEMP, temp_max1, temp_max); | ||
183 | show(TEMP, temp_hyst1, temp_hyst); | ||
184 | show(BOOL, fan_auto1, fan_auto1); | ||
185 | show_fan(fan_input1, fan_in, 0); | ||
186 | show_fan(fan_input2, fan_in, 1); | ||
187 | show_fan(fan_min1, fan_min, 0); | ||
188 | show_fan(fan_min2, fan_min, 1); | ||
189 | show(DIV, fan_div1, fan_div[0]); | ||
190 | show(DIV, fan_div2, fan_div[1]); | ||
191 | show(VDD, in_input0, voltage_in[0]); | ||
192 | show(IN, in_input1, voltage_in[1]); | ||
193 | show(IN, in_input2, voltage_in[2]); | ||
194 | show(IN, in_input3, voltage_in[3]); | ||
195 | show(VDD, in_min0, voltage_min[0]); | ||
196 | show(IN, in_min1, voltage_min[1]); | ||
197 | show(IN, in_min2, voltage_min[2]); | ||
198 | show(IN, in_min3, voltage_min[3]); | ||
199 | show(VDD, in_max0, voltage_max[0]); | ||
200 | show(IN, in_max1, voltage_max[1]); | ||
201 | show(IN, in_max2, voltage_max[2]); | ||
202 | show(IN, in_max3, voltage_max[3]); | ||
203 | show(RAW, alarms, alarms); | ||
204 | show(BOOL, beep_enable, beep_enable); | ||
205 | show(BEEP_MASK, beep_mask, beep_mask); | ||
206 | |||
207 | #define set(type, suffix, value, reg) \ | ||
208 | static ssize_t set_##suffix(struct device *dev, const char *buf, \ | ||
209 | size_t count) \ | ||
210 | { \ | ||
211 | struct i2c_client *client = to_i2c_client(dev); \ | ||
212 | struct gl518_data *data = i2c_get_clientdata(client); \ | ||
213 | long val = simple_strtol(buf, NULL, 10); \ | ||
214 | \ | ||
215 | down(&data->update_lock); \ | ||
216 | data->value = type##_TO_REG(val); \ | ||
217 | gl518_write_value(client, reg, data->value); \ | ||
218 | up(&data->update_lock); \ | ||
219 | return count; \ | ||
220 | } | ||
221 | |||
222 | #define set_bits(type, suffix, value, reg, mask, shift) \ | ||
223 | static ssize_t set_##suffix(struct device *dev, const char *buf, \ | ||
224 | size_t count) \ | ||
225 | { \ | ||
226 | struct i2c_client *client = to_i2c_client(dev); \ | ||
227 | struct gl518_data *data = i2c_get_clientdata(client); \ | ||
228 | int regvalue; \ | ||
229 | unsigned long val = simple_strtoul(buf, NULL, 10); \ | ||
230 | \ | ||
231 | down(&data->update_lock); \ | ||
232 | regvalue = gl518_read_value(client, reg); \ | ||
233 | data->value = type##_TO_REG(val); \ | ||
234 | regvalue = (regvalue & ~mask) | (data->value << shift); \ | ||
235 | gl518_write_value(client, reg, regvalue); \ | ||
236 | up(&data->update_lock); \ | ||
237 | return count; \ | ||
238 | } | ||
239 | |||
240 | #define set_low(type, suffix, value, reg) \ | ||
241 | set_bits(type, suffix, value, reg, 0x00ff, 0) | ||
242 | #define set_high(type, suffix, value, reg) \ | ||
243 | set_bits(type, suffix, value, reg, 0xff00, 8) | ||
244 | |||
245 | set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); | ||
246 | set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); | ||
247 | set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); | ||
248 | set_bits(DIV, fan_div1, fan_div[0], GL518_REG_MISC, 0xc0, 6); | ||
249 | set_bits(DIV, fan_div2, fan_div[1], GL518_REG_MISC, 0x30, 4); | ||
250 | set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); | ||
251 | set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); | ||
252 | set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); | ||
253 | set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); | ||
254 | set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); | ||
255 | set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); | ||
256 | set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); | ||
257 | set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); | ||
258 | set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); | ||
259 | set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); | ||
260 | |||
261 | static ssize_t set_fan_min1(struct device *dev, const char *buf, size_t count) | ||
262 | { | ||
263 | struct i2c_client *client = to_i2c_client(dev); | ||
264 | struct gl518_data *data = i2c_get_clientdata(client); | ||
265 | int regvalue; | ||
266 | unsigned long val = simple_strtoul(buf, NULL, 10); | ||
267 | |||
268 | down(&data->update_lock); | ||
269 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); | ||
270 | data->fan_min[0] = FAN_TO_REG(val, | ||
271 | DIV_FROM_REG(data->fan_div[0])); | ||
272 | regvalue = (regvalue & 0x00ff) | (data->fan_min[0] << 8); | ||
273 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); | ||
274 | |||
275 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | ||
276 | if (data->fan_min[0] == 0) | ||
277 | data->alarm_mask &= ~0x20; | ||
278 | else | ||
279 | data->alarm_mask |= 0x20; | ||
280 | data->beep_mask &= data->alarm_mask; | ||
281 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | ||
282 | |||
283 | up(&data->update_lock); | ||
284 | return count; | ||
285 | } | ||
286 | |||
287 | static ssize_t set_fan_min2(struct device *dev, const char *buf, size_t count) | ||
288 | { | ||
289 | struct i2c_client *client = to_i2c_client(dev); | ||
290 | struct gl518_data *data = i2c_get_clientdata(client); | ||
291 | int regvalue; | ||
292 | unsigned long val = simple_strtoul(buf, NULL, 10); | ||
293 | |||
294 | down(&data->update_lock); | ||
295 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); | ||
296 | data->fan_min[1] = FAN_TO_REG(val, | ||
297 | DIV_FROM_REG(data->fan_div[1])); | ||
298 | regvalue = (regvalue & 0xff00) | data->fan_min[1]; | ||
299 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); | ||
300 | |||
301 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | ||
302 | if (data->fan_min[1] == 0) | ||
303 | data->alarm_mask &= ~0x40; | ||
304 | else | ||
305 | data->alarm_mask |= 0x40; | ||
306 | data->beep_mask &= data->alarm_mask; | ||
307 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | ||
308 | |||
309 | up(&data->update_lock); | ||
310 | return count; | ||
311 | } | ||
312 | |||
313 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); | ||
314 | static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); | ||
315 | static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, | ||
316 | show_temp_hyst1, set_temp_hyst1); | ||
317 | static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); | ||
318 | static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input1, NULL); | ||
319 | static DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input2, NULL); | ||
320 | static DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, show_fan_min1, set_fan_min1); | ||
321 | static DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, show_fan_min2, set_fan_min2); | ||
322 | static DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, show_fan_div1, set_fan_div1); | ||
323 | static DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, show_fan_div2, set_fan_div2); | ||
324 | static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); | ||
325 | static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); | ||
326 | static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); | ||
327 | static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); | ||
328 | static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); | ||
329 | static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); | ||
330 | static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); | ||
331 | static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); | ||
332 | static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); | ||
333 | static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); | ||
334 | static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); | ||
335 | static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); | ||
336 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | ||
337 | static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, | ||
338 | show_beep_enable, set_beep_enable); | ||
339 | static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, | ||
340 | show_beep_mask, set_beep_mask); | ||
341 | |||
342 | /* | ||
343 | * Real code | ||
344 | */ | ||
345 | |||
346 | static int gl518_attach_adapter(struct i2c_adapter *adapter) | ||
347 | { | ||
348 | if (!(adapter->class & I2C_CLASS_HWMON)) | ||
349 | return 0; | ||
350 | return i2c_detect(adapter, &addr_data, gl518_detect); | ||
351 | } | ||
352 | |||
353 | static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) | ||
354 | { | ||
355 | int i; | ||
356 | struct i2c_client *new_client; | ||
357 | struct gl518_data *data; | ||
358 | int err = 0; | ||
359 | |||
360 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | ||
361 | I2C_FUNC_SMBUS_WORD_DATA)) | ||
362 | goto exit; | ||
363 | |||
364 | /* OK. For now, we presume we have a valid client. We now create the | ||
365 | client structure, even though we cannot fill it completely yet. | ||
366 | But it allows us to access gl518_{read,write}_value. */ | ||
367 | |||
368 | if (!(data = kmalloc(sizeof(struct gl518_data), GFP_KERNEL))) { | ||
369 | err = -ENOMEM; | ||
370 | goto exit; | ||
371 | } | ||
372 | memset(data, 0, sizeof(struct gl518_data)); | ||
373 | |||
374 | new_client = &data->client; | ||
375 | i2c_set_clientdata(new_client, data); | ||
376 | |||
377 | new_client->addr = address; | ||
378 | new_client->adapter = adapter; | ||
379 | new_client->driver = &gl518_driver; | ||
380 | new_client->flags = 0; | ||
381 | |||
382 | /* Now, we do the remaining detection. */ | ||
383 | |||
384 | if (kind < 0) { | ||
385 | if ((gl518_read_value(new_client, GL518_REG_CHIP_ID) != 0x80) | ||
386 | || (gl518_read_value(new_client, GL518_REG_CONF) & 0x80)) | ||
387 | goto exit_free; | ||
388 | } | ||
389 | |||
390 | /* Determine the chip type. */ | ||
391 | if (kind <= 0) { | ||
392 | i = gl518_read_value(new_client, GL518_REG_REVISION); | ||
393 | if (i == 0x00) { | ||
394 | kind = gl518sm_r00; | ||
395 | } else if (i == 0x80) { | ||
396 | kind = gl518sm_r80; | ||
397 | } else { | ||
398 | if (kind <= 0) | ||
399 | dev_info(&adapter->dev, | ||
400 | "Ignoring 'force' parameter for unknown " | ||
401 | "chip at adapter %d, address 0x%02x\n", | ||
402 | i2c_adapter_id(adapter), address); | ||
403 | goto exit_free; | ||
404 | } | ||
405 | } | ||
406 | |||
407 | /* Fill in the remaining client fields */ | ||
408 | strlcpy(new_client->name, "gl518sm", I2C_NAME_SIZE); | ||
409 | data->type = kind; | ||
410 | data->valid = 0; | ||
411 | init_MUTEX(&data->update_lock); | ||
412 | |||
413 | /* Tell the I2C layer a new client has arrived */ | ||
414 | if ((err = i2c_attach_client(new_client))) | ||
415 | goto exit_free; | ||
416 | |||
417 | /* Initialize the GL518SM chip */ | ||
418 | data->alarm_mask = 0xff; | ||
419 | data->voltage_in[0]=data->voltage_in[1]=data->voltage_in[2]=0; | ||
420 | gl518_init_client((struct i2c_client *) new_client); | ||
421 | |||
422 | /* Register sysfs hooks */ | ||
423 | device_create_file(&new_client->dev, &dev_attr_in0_input); | ||
424 | device_create_file(&new_client->dev, &dev_attr_in1_input); | ||
425 | device_create_file(&new_client->dev, &dev_attr_in2_input); | ||
426 | device_create_file(&new_client->dev, &dev_attr_in3_input); | ||
427 | device_create_file(&new_client->dev, &dev_attr_in0_min); | ||
428 | device_create_file(&new_client->dev, &dev_attr_in1_min); | ||
429 | device_create_file(&new_client->dev, &dev_attr_in2_min); | ||
430 | device_create_file(&new_client->dev, &dev_attr_in3_min); | ||
431 | device_create_file(&new_client->dev, &dev_attr_in0_max); | ||
432 | device_create_file(&new_client->dev, &dev_attr_in1_max); | ||
433 | device_create_file(&new_client->dev, &dev_attr_in2_max); | ||
434 | device_create_file(&new_client->dev, &dev_attr_in3_max); | ||
435 | device_create_file(&new_client->dev, &dev_attr_fan1_auto); | ||
436 | device_create_file(&new_client->dev, &dev_attr_fan1_input); | ||
437 | device_create_file(&new_client->dev, &dev_attr_fan2_input); | ||
438 | device_create_file(&new_client->dev, &dev_attr_fan1_min); | ||
439 | device_create_file(&new_client->dev, &dev_attr_fan2_min); | ||
440 | device_create_file(&new_client->dev, &dev_attr_fan1_div); | ||
441 | device_create_file(&new_client->dev, &dev_attr_fan2_div); | ||
442 | device_create_file(&new_client->dev, &dev_attr_temp1_input); | ||
443 | device_create_file(&new_client->dev, &dev_attr_temp1_max); | ||
444 | device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); | ||
445 | device_create_file(&new_client->dev, &dev_attr_alarms); | ||
446 | device_create_file(&new_client->dev, &dev_attr_beep_enable); | ||
447 | device_create_file(&new_client->dev, &dev_attr_beep_mask); | ||
448 | |||
449 | return 0; | ||
450 | |||
451 | /* OK, this is not exactly good programming practice, usually. But it is | ||
452 | very code-efficient in this case. */ | ||
453 | |||
454 | exit_free: | ||
455 | kfree(data); | ||
456 | exit: | ||
457 | return err; | ||
458 | } | ||
459 | |||
460 | |||
461 | /* Called when we have found a new GL518SM. | ||
462 | Note that we preserve D4:NoFan2 and D2:beep_enable. */ | ||
463 | static void gl518_init_client(struct i2c_client *client) | ||
464 | { | ||
465 | /* Make sure we leave D7:Reset untouched */ | ||
466 | u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; | ||
467 | |||
468 | /* Comparator mode (D3=0), standby mode (D6=0) */ | ||
469 | gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); | ||
470 | |||
471 | /* Never interrupts */ | ||
472 | gl518_write_value(client, GL518_REG_MASK, 0x00); | ||
473 | |||
474 | /* Clear status register (D5=1), start (D6=1) */ | ||
475 | gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); | ||
476 | gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); | ||
477 | } | ||
478 | |||
479 | static int gl518_detach_client(struct i2c_client *client) | ||
480 | { | ||
481 | int err; | ||
482 | |||
483 | if ((err = i2c_detach_client(client))) { | ||
484 | dev_err(&client->dev, "Client deregistration failed, " | ||
485 | "client not detached.\n"); | ||
486 | return err; | ||
487 | } | ||
488 | |||
489 | kfree(i2c_get_clientdata(client)); | ||
490 | |||
491 | return 0; | ||
492 | } | ||
493 | |||
494 | /* Registers 0x07 to 0x0c are word-sized, others are byte-sized | ||
495 | GL518 uses a high-byte first convention, which is exactly opposite to | ||
496 | the usual practice. */ | ||
497 | static int gl518_read_value(struct i2c_client *client, u8 reg) | ||
498 | { | ||
499 | if ((reg >= 0x07) && (reg <= 0x0c)) | ||
500 | return swab16(i2c_smbus_read_word_data(client, reg)); | ||
501 | else | ||
502 | return i2c_smbus_read_byte_data(client, reg); | ||
503 | } | ||
504 | |||
505 | /* Registers 0x07 to 0x0c are word-sized, others are byte-sized | ||
506 | GL518 uses a high-byte first convention, which is exactly opposite to | ||
507 | the usual practice. */ | ||
508 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) | ||
509 | { | ||
510 | if ((reg >= 0x07) && (reg <= 0x0c)) | ||
511 | return i2c_smbus_write_word_data(client, reg, swab16(value)); | ||
512 | else | ||
513 | return i2c_smbus_write_byte_data(client, reg, value); | ||
514 | } | ||
515 | |||
516 | static struct gl518_data *gl518_update_device(struct device *dev) | ||
517 | { | ||
518 | struct i2c_client *client = to_i2c_client(dev); | ||
519 | struct gl518_data *data = i2c_get_clientdata(client); | ||
520 | int val; | ||
521 | |||
522 | down(&data->update_lock); | ||
523 | |||
524 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | ||
525 | || !data->valid) { | ||
526 | dev_dbg(&client->dev, "Starting gl518 update\n"); | ||
527 | |||
528 | data->alarms = gl518_read_value(client, GL518_REG_INT); | ||
529 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | ||
530 | |||
531 | val = gl518_read_value(client, GL518_REG_VDD_LIMIT); | ||
532 | data->voltage_min[0] = val & 0xff; | ||
533 | data->voltage_max[0] = (val >> 8) & 0xff; | ||
534 | val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); | ||
535 | data->voltage_min[1] = val & 0xff; | ||
536 | data->voltage_max[1] = (val >> 8) & 0xff; | ||
537 | val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); | ||
538 | data->voltage_min[2] = val & 0xff; | ||
539 | data->voltage_max[2] = (val >> 8) & 0xff; | ||
540 | val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); | ||
541 | data->voltage_min[3] = val & 0xff; | ||
542 | data->voltage_max[3] = (val >> 8) & 0xff; | ||
543 | |||
544 | val = gl518_read_value(client, GL518_REG_FAN_COUNT); | ||
545 | data->fan_in[0] = (val >> 8) & 0xff; | ||
546 | data->fan_in[1] = val & 0xff; | ||
547 | |||
548 | val = gl518_read_value(client, GL518_REG_FAN_LIMIT); | ||
549 | data->fan_min[0] = (val >> 8) & 0xff; | ||
550 | data->fan_min[1] = val & 0xff; | ||
551 | |||
552 | data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); | ||
553 | data->temp_max = | ||
554 | gl518_read_value(client, GL518_REG_TEMP_MAX); | ||
555 | data->temp_hyst = | ||
556 | gl518_read_value(client, GL518_REG_TEMP_HYST); | ||
557 | |||
558 | val = gl518_read_value(client, GL518_REG_MISC); | ||
559 | data->fan_div[0] = (val >> 6) & 0x03; | ||
560 | data->fan_div[1] = (val >> 4) & 0x03; | ||
561 | data->fan_auto1 = (val >> 3) & 0x01; | ||
562 | |||
563 | data->alarms &= data->alarm_mask; | ||
564 | |||
565 | val = gl518_read_value(client, GL518_REG_CONF); | ||
566 | data->beep_enable = (val >> 2) & 1; | ||
567 | |||
568 | if (data->type != gl518sm_r00) { | ||
569 | data->voltage_in[0] = | ||
570 | gl518_read_value(client, GL518_REG_VDD); | ||
571 | data->voltage_in[1] = | ||
572 | gl518_read_value(client, GL518_REG_VIN1); | ||
573 | data->voltage_in[2] = | ||
574 | gl518_read_value(client, GL518_REG_VIN2); | ||
575 | } | ||
576 | data->voltage_in[3] = | ||
577 | gl518_read_value(client, GL518_REG_VIN3); | ||
578 | |||
579 | data->last_updated = jiffies; | ||
580 | data->valid = 1; | ||
581 | } | ||
582 | |||
583 | up(&data->update_lock); | ||
584 | |||
585 | return data; | ||
586 | } | ||
587 | |||
588 | static int __init sensors_gl518sm_init(void) | ||
589 | { | ||
590 | return i2c_add_driver(&gl518_driver); | ||
591 | } | ||
592 | |||
593 | static void __exit sensors_gl518sm_exit(void) | ||
594 | { | ||
595 | i2c_del_driver(&gl518_driver); | ||
596 | } | ||
597 | |||
598 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | ||
599 | "Kyosti Malkki <kmalkki@cc.hut.fi> and " | ||
600 | "Hong-Gunn Chew <hglinux@gunnet.org>"); | ||
601 | MODULE_DESCRIPTION("GL518SM driver"); | ||
602 | MODULE_LICENSE("GPL"); | ||
603 | |||
604 | module_init(sensors_gl518sm_init); | ||
605 | module_exit(sensors_gl518sm_exit); | ||