xref: /openbmc/linux/drivers/hwmon/abituguru3.c (revision e8e0929d)
1 /*
2     abituguru3.c
3 
4     Copyright (c) 2006-2008 Hans de Goede <j.w.r.degoede@hhs.nl>
5     Copyright (c) 2008 Alistair John Strachan <alistair@devzero.co.uk>
6 
7     This program is free software; you can redistribute it and/or modify
8     it under the terms of the GNU General Public License as published by
9     the Free Software Foundation; either version 2 of the License, or
10     (at your option) any later version.
11 
12     This program is distributed in the hope that it will be useful,
13     but WITHOUT ANY WARRANTY; without even the implied warranty of
14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15     GNU General Public License for more details.
16 
17     You should have received a copy of the GNU General Public License
18     along with this program; if not, write to the Free Software
19     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21 /*
22     This driver supports the sensor part of revision 3 of the custom Abit uGuru
23     chip found on newer Abit uGuru motherboards. Note: because of lack of specs
24     only reading the sensors and their settings is supported.
25 */
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/slab.h>
29 #include <linux/jiffies.h>
30 #include <linux/mutex.h>
31 #include <linux/err.h>
32 #include <linux/delay.h>
33 #include <linux/platform_device.h>
34 #include <linux/hwmon.h>
35 #include <linux/hwmon-sysfs.h>
36 #include <linux/dmi.h>
37 #include <linux/io.h>
38 
39 /* uGuru3 bank addresses */
40 #define ABIT_UGURU3_SETTINGS_BANK		0x01
41 #define ABIT_UGURU3_SENSORS_BANK		0x08
42 #define ABIT_UGURU3_MISC_BANK			0x09
43 #define ABIT_UGURU3_ALARMS_START		0x1E
44 #define ABIT_UGURU3_SETTINGS_START		0x24
45 #define ABIT_UGURU3_VALUES_START		0x80
46 #define ABIT_UGURU3_BOARD_ID			0x0A
47 /* uGuru3 sensor bank flags */			     /* Alarm if: */
48 #define ABIT_UGURU3_TEMP_HIGH_ALARM_ENABLE	0x01 /*  temp over warn */
49 #define ABIT_UGURU3_VOLT_HIGH_ALARM_ENABLE	0x02 /*  volt over max */
50 #define ABIT_UGURU3_VOLT_LOW_ALARM_ENABLE	0x04 /*  volt under min */
51 #define ABIT_UGURU3_TEMP_HIGH_ALARM_FLAG	0x10 /* temp is over warn */
52 #define ABIT_UGURU3_VOLT_HIGH_ALARM_FLAG	0x20 /* volt is over max */
53 #define ABIT_UGURU3_VOLT_LOW_ALARM_FLAG		0x40 /* volt is under min */
54 #define ABIT_UGURU3_FAN_LOW_ALARM_ENABLE	0x01 /*   fan under min */
55 #define ABIT_UGURU3_BEEP_ENABLE			0x08 /* beep if alarm */
56 #define ABIT_UGURU3_SHUTDOWN_ENABLE		0x80 /* shutdown if alarm */
57 /* sensor types */
58 #define ABIT_UGURU3_IN_SENSOR			0
59 #define ABIT_UGURU3_TEMP_SENSOR			1
60 #define ABIT_UGURU3_FAN_SENSOR			2
61 
62 /* Timeouts / Retries, if these turn out to need a lot of fiddling we could
63    convert them to params. Determined by trial and error. I assume this is
64    cpu-speed independent, since the ISA-bus and not the CPU should be the
65    bottleneck. */
66 #define ABIT_UGURU3_WAIT_TIMEOUT		250
67 /* Normally the 0xAC at the end of synchronize() is reported after the
68    first read, but sometimes not and we need to poll */
69 #define ABIT_UGURU3_SYNCHRONIZE_TIMEOUT		5
70 /* utility macros */
71 #define ABIT_UGURU3_NAME			"abituguru3"
72 #define ABIT_UGURU3_DEBUG(format, arg...)	\
73 	if (verbose)				\
74 		printk(KERN_DEBUG ABIT_UGURU3_NAME ": "	format , ## arg)
75 
76 /* Macros to help calculate the sysfs_names array length */
77 #define ABIT_UGURU3_MAX_NO_SENSORS 26
78 /* sum of strlen +1 of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0,
79    in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0, in??_label\0 */
80 #define ABIT_UGURU3_IN_NAMES_LENGTH (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14 + 11)
81 /* sum of strlen +1 of: temp??_input\0, temp??_max\0, temp??_crit\0,
82    temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0,
83    temp??_label\0 */
84 #define ABIT_UGURU3_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16 + 13)
85 /* sum of strlen +1 of: fan??_input\0, fan??_min\0, fan??_alarm\0,
86    fan??_alarm_enable\0, fan??_beep\0, fan??_shutdown\0, fan??_label\0 */
87 #define ABIT_UGURU3_FAN_NAMES_LENGTH (12 + 10 + 12 + 19 + 11 + 15 + 12)
88 /* Worst case scenario 16 in sensors (longest names_length) and the rest
89    temp sensors (second longest names_length). */
90 #define ABIT_UGURU3_SYSFS_NAMES_LENGTH (16 * ABIT_UGURU3_IN_NAMES_LENGTH + \
91 	(ABIT_UGURU3_MAX_NO_SENSORS - 16) * ABIT_UGURU3_TEMP_NAMES_LENGTH)
92 
93 /* All the macros below are named identical to the openguru2 program
94    reverse engineered by Louis Kruger, hence the names might not be 100%
95    logical. I could come up with better names, but I prefer keeping the names
96    identical so that this driver can be compared with his work more easily. */
97 /* Two i/o-ports are used by uGuru */
98 #define ABIT_UGURU3_BASE			0x00E0
99 #define ABIT_UGURU3_CMD				0x00
100 #define ABIT_UGURU3_DATA			0x04
101 #define ABIT_UGURU3_REGION_LENGTH		5
102 /* The wait_xxx functions return this on success and the last contents
103    of the DATA register (0-255) on failure. */
104 #define ABIT_UGURU3_SUCCESS			-1
105 /* uGuru status flags */
106 #define ABIT_UGURU3_STATUS_READY_FOR_READ	0x01
107 #define ABIT_UGURU3_STATUS_BUSY			0x02
108 
109 
110 /* Structures */
111 struct abituguru3_sensor_info {
112 	const char* name;
113 	int port;
114 	int type;
115 	int multiplier;
116 	int divisor;
117 	int offset;
118 };
119 
120 /* Avoid use of flexible array members */
121 #define ABIT_UGURU3_MAX_DMI_NAMES 2
122 
123 struct abituguru3_motherboard_info {
124 	u16 id;
125 	const char *dmi_name[ABIT_UGURU3_MAX_DMI_NAMES + 1];
126 	/* + 1 -> end of sensors indicated by a sensor with name == NULL */
127 	struct abituguru3_sensor_info sensors[ABIT_UGURU3_MAX_NO_SENSORS + 1];
128 };
129 
130 /* For the Abit uGuru, we need to keep some data in memory.
131    The structure is dynamically allocated, at the same time when a new
132    abituguru3 device is allocated. */
133 struct abituguru3_data {
134 	struct device *hwmon_dev;	/* hwmon registered device */
135 	struct mutex update_lock;	/* protect access to data and uGuru */
136 	unsigned short addr;		/* uguru base address */
137 	char valid;			/* !=0 if following fields are valid */
138 	unsigned long last_updated;	/* In jiffies */
139 
140 	/* For convenience the sysfs attr and their names are generated
141 	   automatically. We have max 10 entries per sensor (for in sensors) */
142 	struct sensor_device_attribute_2 sysfs_attr[ABIT_UGURU3_MAX_NO_SENSORS
143 		* 10];
144 
145 	/* Buffer to store the dynamically generated sysfs names */
146 	char sysfs_names[ABIT_UGURU3_SYSFS_NAMES_LENGTH];
147 
148 	/* Pointer to the sensors info for the detected motherboard */
149 	const struct abituguru3_sensor_info *sensors;
150 
151 	/* The abituguru3 supports upto 48 sensors, and thus has registers
152 	   sets for 48 sensors, for convienence reasons / simplicity of the
153 	   code we always read and store all registers for all 48 sensors */
154 
155 	/* Alarms for all 48 sensors (1 bit per sensor) */
156 	u8 alarms[48/8];
157 
158 	/* Value of all 48 sensors */
159 	u8 value[48];
160 
161 	/* Settings of all 48 sensors, note in and temp sensors (the first 32
162 	   sensors) have 3 bytes of settings, while fans only have 2 bytes,
163 	   for convenience we use 3 bytes for all sensors */
164 	u8 settings[48][3];
165 };
166 
167 
168 /* Constants */
169 static const struct abituguru3_motherboard_info abituguru3_motherboards[] = {
170 	{ 0x000C, { NULL } /* Unknown, need DMI string */, {
171 		{ "CPU Core",		 0, 0, 10, 1, 0 },
172 		{ "DDR",		 1, 0, 10, 1, 0 },
173 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
174 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
175 		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
176 		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
177 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
178 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
179 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
180 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
181 		{ "+3.3V",		10, 0, 20, 1, 0 },
182 		{ "5VSB",		11, 0, 30, 1, 0 },
183 		{ "CPU",		24, 1, 1, 1, 0 },
184 		{ "System",		25, 1, 1, 1, 0 },
185 		{ "PWM",		26, 1, 1, 1, 0 },
186 		{ "CPU Fan",		32, 2, 60, 1, 0 },
187 		{ "NB Fan",		33, 2, 60, 1, 0 },
188 		{ "SYS FAN",		34, 2, 60, 1, 0 },
189 		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
190 		{ NULL, 0, 0, 0, 0, 0 } }
191 	},
192 	{ 0x000D, { NULL } /* Abit AW8, need DMI string */, {
193 		{ "CPU Core",		 0, 0, 10, 1, 0 },
194 		{ "DDR",		 1, 0, 10, 1, 0 },
195 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
196 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
197 		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
198 		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
199 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
200 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
201 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
202 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
203 		{ "+3.3V",		10, 0, 20, 1, 0 },
204 		{ "5VSB",		11, 0, 30, 1, 0 },
205 		{ "CPU",		24, 1, 1, 1, 0 },
206 		{ "System",		25, 1, 1, 1, 0 },
207 		{ "PWM1",		26, 1, 1, 1, 0 },
208 		{ "PWM2",		27, 1, 1, 1, 0 },
209 		{ "PWM3",		28, 1, 1, 1, 0 },
210 		{ "PWM4",		29, 1, 1, 1, 0 },
211 		{ "CPU Fan",		32, 2, 60, 1, 0 },
212 		{ "NB Fan",		33, 2, 60, 1, 0 },
213 		{ "SYS Fan",		34, 2, 60, 1, 0 },
214 		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
215 		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
216 		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
217 		{ "AUX4 Fan",		38, 2, 60, 1, 0 },
218 		{ "AUX5 Fan",		39, 2, 60, 1, 0 },
219 		{ NULL, 0, 0, 0, 0, 0 } }
220 	},
221 	{ 0x000E, { NULL } /* AL-8, need DMI string */, {
222 		{ "CPU Core",		 0, 0, 10, 1, 0 },
223 		{ "DDR",		 1, 0, 10, 1, 0 },
224 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
225 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
226 		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
227 		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
228 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
229 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
230 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
231 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
232 		{ "+3.3V",		10, 0, 20, 1, 0 },
233 		{ "5VSB",		11, 0, 30, 1, 0 },
234 		{ "CPU",		24, 1, 1, 1, 0 },
235 		{ "System",		25, 1, 1, 1, 0 },
236 		{ "PWM",		26, 1, 1, 1, 0 },
237 		{ "CPU Fan",		32, 2, 60, 1, 0 },
238 		{ "NB Fan",		33, 2, 60, 1, 0 },
239 		{ "SYS Fan",		34, 2, 60, 1, 0 },
240 		{ NULL, 0, 0, 0, 0, 0 } }
241 	},
242 	{ 0x000F, { NULL } /* Unknown, need DMI string */, {
243 
244 		{ "CPU Core",		 0, 0, 10, 1, 0 },
245 		{ "DDR",		 1, 0, 10, 1, 0 },
246 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
247 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
248 		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
249 		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
250 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
251 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
252 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
253 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
254 		{ "+3.3V",		10, 0, 20, 1, 0 },
255 		{ "5VSB",		11, 0, 30, 1, 0 },
256 		{ "CPU",		24, 1, 1, 1, 0 },
257 		{ "System",		25, 1, 1, 1, 0 },
258 		{ "PWM",		26, 1, 1, 1, 0 },
259 		{ "CPU Fan",		32, 2, 60, 1, 0 },
260 		{ "NB Fan",		33, 2, 60, 1, 0 },
261 		{ "SYS Fan",		34, 2, 60, 1, 0 },
262 		{ NULL, 0, 0, 0, 0, 0 } }
263 	},
264 	{ 0x0010, { NULL } /* Abit NI8 SLI GR, need DMI string */, {
265 		{ "CPU Core",		 0, 0, 10, 1, 0 },
266 		{ "DDR",		 1, 0, 10, 1, 0 },
267 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
268 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
269 		{ "NB 1.4V",		 4, 0, 10, 1, 0 },
270 		{ "SB 1.5V",		 6, 0, 10, 1, 0 },
271 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
272 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
273 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
274 		{ "+3.3V",		10, 0, 20, 1, 0 },
275 		{ "5VSB",		11, 0, 30, 1, 0 },
276 		{ "CPU",		24, 1, 1, 1, 0 },
277 		{ "SYS",		25, 1, 1, 1, 0 },
278 		{ "PWM",		26, 1, 1, 1, 0 },
279 		{ "CPU Fan",		32, 2, 60, 1, 0 },
280 		{ "NB Fan",		33, 2, 60, 1, 0 },
281 		{ "SYS Fan",		34, 2, 60, 1, 0 },
282 		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
283 		{ "OTES1 Fan",		36, 2, 60, 1, 0 },
284 		{ NULL, 0, 0, 0, 0, 0 } }
285 	},
286 	{ 0x0011, { "AT8 32X", NULL }, {
287 		{ "CPU Core",		 0, 0, 10, 1, 0 },
288 		{ "DDR",		 1, 0, 20, 1, 0 },
289 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
290 		{ "CPU VDDA 2.5V",	 6, 0, 20, 1, 0 },
291 		{ "NB 1.8V",		 4, 0, 10, 1, 0 },
292 		{ "NB 1.8V Dual",	 5, 0, 10, 1, 0 },
293 		{ "HTV 1.2",		 3, 0, 10, 1, 0 },
294 		{ "PCIE 1.2V",		12, 0, 10, 1, 0 },
295 		{ "NB 1.2V",		13, 0, 10, 1, 0 },
296 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
297 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
298 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
299 		{ "+3.3V",		10, 0, 20, 1, 0 },
300 		{ "5VSB",		11, 0, 30, 1, 0 },
301 		{ "CPU",		24, 1, 1, 1, 0 },
302 		{ "NB",			25, 1, 1, 1, 0 },
303 		{ "System",		26, 1, 1, 1, 0 },
304 		{ "PWM",		27, 1, 1, 1, 0 },
305 		{ "CPU Fan",		32, 2, 60, 1, 0 },
306 		{ "NB Fan",		33, 2, 60, 1, 0 },
307 		{ "SYS Fan",		34, 2, 60, 1, 0 },
308 		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
309 		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
310 		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
311 		{ NULL, 0, 0, 0, 0, 0 } }
312 	},
313 	{ 0x0012, { NULL } /* Abit AN8 32X, need DMI string */, {
314 		{ "CPU Core",		 0, 0, 10, 1, 0 },
315 		{ "DDR",		 1, 0, 20, 1, 0 },
316 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
317 		{ "HyperTransport",	 3, 0, 10, 1, 0 },
318 		{ "CPU VDDA 2.5V",	 5, 0, 20, 1, 0 },
319 		{ "NB",			 4, 0, 10, 1, 0 },
320 		{ "SB",			 6, 0, 10, 1, 0 },
321 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
322 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
323 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
324 		{ "+3.3V",		10, 0, 20, 1, 0 },
325 		{ "5VSB",		11, 0, 30, 1, 0 },
326 		{ "CPU",		24, 1, 1, 1, 0 },
327 		{ "SYS",		25, 1, 1, 1, 0 },
328 		{ "PWM",		26, 1, 1, 1, 0 },
329 		{ "CPU Fan",		32, 2, 60, 1, 0 },
330 		{ "NB Fan",		33, 2, 60, 1, 0 },
331 		{ "SYS Fan",		34, 2, 60, 1, 0 },
332 		{ "AUX1 Fan",		36, 2, 60, 1, 0 },
333 		{ NULL, 0, 0, 0, 0, 0 } }
334 	},
335 	{ 0x0013, { NULL } /* Abit AW8D, need DMI string */, {
336 		{ "CPU Core",		 0, 0, 10, 1, 0 },
337 		{ "DDR",		 1, 0, 10, 1, 0 },
338 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
339 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
340 		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
341 		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
342 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
343 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
344 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
345 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
346 		{ "+3.3V",		10, 0, 20, 1, 0 },
347 		{ "5VSB",		11, 0, 30, 1, 0 },
348 		{ "CPU",		24, 1, 1, 1, 0 },
349 		{ "System",		25, 1, 1, 1, 0 },
350 		{ "PWM1",		26, 1, 1, 1, 0 },
351 		{ "PWM2",		27, 1, 1, 1, 0 },
352 		{ "PWM3",		28, 1, 1, 1, 0 },
353 		{ "PWM4",		29, 1, 1, 1, 0 },
354 		{ "CPU Fan",		32, 2, 60, 1, 0 },
355 		{ "NB Fan",		33, 2, 60, 1, 0 },
356 		{ "SYS Fan",		34, 2, 60, 1, 0 },
357 		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
358 		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
359 		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
360 		{ "AUX4 Fan",		38, 2, 60, 1, 0 },
361 		{ "AUX5 Fan",		39, 2, 60, 1, 0 },
362 		{ NULL, 0, 0, 0, 0, 0 } }
363 	},
364 	{ 0x0014, { "AB9", "AB9 Pro", NULL }, {
365 		{ "CPU Core",		 0, 0, 10, 1, 0 },
366 		{ "DDR",		 1, 0, 10, 1, 0 },
367 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
368 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
369 		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
370 		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
371 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
372 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
373 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
374 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
375 		{ "+3.3V",		10, 0, 20, 1, 0 },
376 		{ "5VSB",		11, 0, 30, 1, 0 },
377 		{ "CPU",		24, 1, 1, 1, 0 },
378 		{ "System",		25, 1, 1, 1, 0 },
379 		{ "PWM",		26, 1, 1, 1, 0 },
380 		{ "CPU Fan",		32, 2, 60, 1, 0 },
381 		{ "NB Fan",		33, 2, 60, 1, 0 },
382 		{ "SYS Fan",		34, 2, 60, 1, 0 },
383 		{ NULL, 0, 0, 0, 0, 0 } }
384 	},
385 	{ 0x0015, { NULL } /* Unknown, need DMI string */, {
386 		{ "CPU Core",		 0, 0, 10, 1, 0 },
387 		{ "DDR",		 1, 0, 20, 1, 0 },
388 		{ "DDR VTT",		 2, 0, 10, 1, 0 },
389 		{ "HyperTransport",	 3, 0, 10, 1, 0 },
390 		{ "CPU VDDA 2.5V",	 5, 0, 20, 1, 0 },
391 		{ "NB",			 4, 0, 10, 1, 0 },
392 		{ "SB",			 6, 0, 10, 1, 0 },
393 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
394 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
395 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
396 		{ "+3.3V",		10, 0, 20, 1, 0 },
397 		{ "5VSB",		11, 0, 30, 1, 0 },
398 		{ "CPU",		24, 1, 1, 1, 0 },
399 		{ "SYS",		25, 1, 1, 1, 0 },
400 		{ "PWM",		26, 1, 1, 1, 0 },
401 		{ "CPU Fan",		32, 2, 60, 1, 0 },
402 		{ "NB Fan",		33, 2, 60, 1, 0 },
403 		{ "SYS Fan",		34, 2, 60, 1, 0 },
404 		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
405 		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
406 		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
407 		{ NULL, 0, 0, 0, 0, 0 } }
408 	},
409 	{ 0x0016, { "AW9D-MAX", NULL }, {
410 		{ "CPU Core",		 0, 0, 10, 1, 0 },
411 		{ "DDR2",		 1, 0, 20, 1, 0 },
412 		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
413 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
414 		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
415 		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
416 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
417 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
418 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
419 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
420 		{ "+3.3V",		10, 0, 20, 1, 0 },
421 		{ "5VSB",		11, 0, 30, 1, 0 },
422 		{ "CPU",		24, 1, 1, 1, 0 },
423 		{ "System",		25, 1, 1, 1, 0 },
424 		{ "PWM1",		26, 1, 1, 1, 0 },
425 		{ "PWM2",		27, 1, 1, 1, 0 },
426 		{ "PWM3",		28, 1, 1, 1, 0 },
427 		{ "PWM4",		29, 1, 1, 1, 0 },
428 		{ "CPU Fan",		32, 2, 60, 1, 0 },
429 		{ "NB Fan",		33, 2, 60, 1, 0 },
430 		{ "SYS Fan",		34, 2, 60, 1, 0 },
431 		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
432 		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
433 		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
434 		{ "OTES1 Fan",		38, 2, 60, 1, 0 },
435 		{ NULL, 0, 0, 0, 0, 0 } }
436 	},
437 	{ 0x0017, { NULL } /* Unknown, need DMI string */, {
438 		{ "CPU Core",		 0, 0, 10, 1, 0 },
439 		{ "DDR2",		 1, 0, 20, 1, 0 },
440 		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
441 		{ "HyperTransport",	 3, 0, 10, 1, 0 },
442 		{ "CPU VDDA 2.5V",	 6, 0, 20, 1, 0 },
443 		{ "NB 1.8V",		 4, 0, 10, 1, 0 },
444 		{ "NB 1.2V ",		13, 0, 10, 1, 0 },
445 		{ "SB 1.2V",		 5, 0, 10, 1, 0 },
446 		{ "PCIE 1.2V",		12, 0, 10, 1, 0 },
447 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
448 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
449 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
450 		{ "ATX +3.3V",		10, 0, 20, 1, 0 },
451 		{ "ATX 5VSB",		11, 0, 30, 1, 0 },
452 		{ "CPU",		24, 1, 1, 1, 0 },
453 		{ "System",		26, 1, 1, 1, 0 },
454 		{ "PWM",		27, 1, 1, 1, 0 },
455 		{ "CPU FAN",		32, 2, 60, 1, 0 },
456 		{ "SYS FAN",		34, 2, 60, 1, 0 },
457 		{ "AUX1 FAN",		35, 2, 60, 1, 0 },
458 		{ "AUX2 FAN",		36, 2, 60, 1, 0 },
459 		{ "AUX3 FAN",		37, 2, 60, 1, 0 },
460 		{ NULL, 0, 0, 0, 0, 0 } }
461 	},
462 	{ 0x0018, { "AB9 QuadGT", NULL }, {
463 		{ "CPU Core",		 0, 0, 10, 1, 0 },
464 		{ "DDR2",		 1, 0, 20, 1, 0 },
465 		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
466 		{ "CPU VTT",		 3, 0, 10, 1, 0 },
467 		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
468 		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
469 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
470 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
471 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
472 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
473 		{ "+3.3V",		10, 0, 20, 1, 0 },
474 		{ "5VSB",		11, 0, 30, 1, 0 },
475 		{ "CPU",		24, 1, 1, 1, 0 },
476 		{ "System",		25, 1, 1, 1, 0 },
477 		{ "PWM Phase1",		26, 1, 1, 1, 0 },
478 		{ "PWM Phase2",		27, 1, 1, 1, 0 },
479 		{ "PWM Phase3",		28, 1, 1, 1, 0 },
480 		{ "PWM Phase4",		29, 1, 1, 1, 0 },
481 		{ "PWM Phase5",		30, 1, 1, 1, 0 },
482 		{ "CPU Fan",		32, 2, 60, 1, 0 },
483 		{ "SYS Fan",		34, 2, 60, 1, 0 },
484 		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
485 		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
486 		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
487 		{ NULL, 0, 0, 0, 0, 0 } }
488 	},
489 	{ 0x0019, { "IN9 32X MAX", NULL }, {
490 		{ "CPU Core",		 7, 0, 10, 1, 0 },
491 		{ "DDR2",		13, 0, 20, 1, 0 },
492 		{ "DDR2 VTT",		14, 0, 10, 1, 0 },
493 		{ "CPU VTT",		 3, 0, 20, 1, 0 },
494 		{ "NB 1.2V",		 4, 0, 10, 1, 0 },
495 		{ "SB 1.5V",		 6, 0, 10, 1, 0 },
496 		{ "HyperTransport",	 5, 0, 10, 1, 0 },
497 		{ "ATX +12V (24-Pin)",	12, 0, 60, 1, 0 },
498 		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
499 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
500 		{ "ATX +3.3V",		10, 0, 20, 1, 0 },
501 		{ "ATX 5VSB",		11, 0, 30, 1, 0 },
502 		{ "CPU",		24, 1, 1, 1, 0 },
503 		{ "System",		25, 1, 1, 1, 0 },
504 		{ "PWM Phase1",		26, 1, 1, 1, 0 },
505 		{ "PWM Phase2",		27, 1, 1, 1, 0 },
506 		{ "PWM Phase3",		28, 1, 1, 1, 0 },
507 		{ "PWM Phase4",		29, 1, 1, 1, 0 },
508 		{ "PWM Phase5",		30, 1, 1, 1, 0 },
509 		{ "CPU FAN",		32, 2, 60, 1, 0 },
510 		{ "SYS FAN",		34, 2, 60, 1, 0 },
511 		{ "AUX1 FAN",		33, 2, 60, 1, 0 },
512 		{ "AUX2 FAN",		35, 2, 60, 1, 0 },
513 		{ "AUX3 FAN",		36, 2, 60, 1, 0 },
514 		{ NULL, 0, 0, 0, 0, 0 } }
515 	},
516 	{ 0x001A, { "IP35 Pro", "IP35 Pro XE", NULL }, {
517 		{ "CPU Core",		 0, 0, 10, 1, 0 },
518 		{ "DDR2",		 1, 0, 20, 1, 0 },
519 		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
520 		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
521 		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
522 		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
523 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
524 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
525 		{ "ATX +12V (8-pin)",	 8, 0, 60, 1, 0 },
526 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
527 		{ "+3.3V",		10, 0, 20, 1, 0 },
528 		{ "5VSB",		11, 0, 30, 1, 0 },
529 		{ "CPU",		24, 1, 1, 1, 0 },
530 		{ "System",		25, 1, 1, 1, 0 },
531 		{ "PWM",		26, 1, 1, 1, 0 },
532 		{ "PWM Phase2",		27, 1, 1, 1, 0 },
533 		{ "PWM Phase3",		28, 1, 1, 1, 0 },
534 		{ "PWM Phase4",		29, 1, 1, 1, 0 },
535 		{ "PWM Phase5",		30, 1, 1, 1, 0 },
536 		{ "CPU Fan",		32, 2, 60, 1, 0 },
537 		{ "SYS Fan",		34, 2, 60, 1, 0 },
538 		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
539 		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
540 		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
541 		{ "AUX4 Fan",		37, 2, 60, 1, 0 },
542 		{ NULL, 0, 0, 0, 0, 0 } }
543 	},
544 	{ 0x001B, { NULL } /* Unknown, need DMI string */, {
545 		{ "CPU Core",		 0, 0, 10, 1, 0 },
546 		{ "DDR3",		 1, 0, 20, 1, 0 },
547 		{ "DDR3 VTT",		 2, 0, 10, 1, 0 },
548 		{ "CPU VTT",		 3, 0, 10, 1, 0 },
549 		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
550 		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
551 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
552 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
553 		{ "ATX +12V (8-pin)",	 8, 0, 60, 1, 0 },
554 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
555 		{ "+3.3V",		10, 0, 20, 1, 0 },
556 		{ "5VSB",		11, 0, 30, 1, 0 },
557 		{ "CPU",		24, 1, 1, 1, 0 },
558 		{ "System",		25, 1, 1, 1, 0 },
559 		{ "PWM Phase1",		26, 1, 1, 1, 0 },
560 		{ "PWM Phase2",		27, 1, 1, 1, 0 },
561 		{ "PWM Phase3",		28, 1, 1, 1, 0 },
562 		{ "PWM Phase4",		29, 1, 1, 1, 0 },
563 		{ "PWM Phase5",		30, 1, 1, 1, 0 },
564 		{ "CPU Fan",		32, 2, 60, 1, 0 },
565 		{ "SYS Fan",		34, 2, 60, 1, 0 },
566 		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
567 		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
568 		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
569 		{ NULL, 0, 0, 0, 0, 0 } }
570 	},
571 	{ 0x001C, { "IX38 QuadGT", NULL }, {
572 		{ "CPU Core",		 0, 0, 10, 1, 0 },
573 		{ "DDR2",		 1, 0, 20, 1, 0 },
574 		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
575 		{ "CPU VTT",		 3, 0, 10, 1, 0 },
576 		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
577 		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
578 		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
579 		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
580 		{ "ATX +12V (8-pin)",	 8, 0, 60, 1, 0 },
581 		{ "ATX +5V",		 9, 0, 30, 1, 0 },
582 		{ "+3.3V",		10, 0, 20, 1, 0 },
583 		{ "5VSB",		11, 0, 30, 1, 0 },
584 		{ "CPU",		24, 1, 1, 1, 0 },
585 		{ "System",		25, 1, 1, 1, 0 },
586 		{ "PWM Phase1",		26, 1, 1, 1, 0 },
587 		{ "PWM Phase2",		27, 1, 1, 1, 0 },
588 		{ "PWM Phase3",		28, 1, 1, 1, 0 },
589 		{ "PWM Phase4",		29, 1, 1, 1, 0 },
590 		{ "PWM Phase5",		30, 1, 1, 1, 0 },
591 		{ "CPU Fan",		32, 2, 60, 1, 0 },
592 		{ "SYS Fan",		34, 2, 60, 1, 0 },
593 		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
594 		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
595 		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
596 		{ NULL, 0, 0, 0, 0, 0 } }
597 	},
598 	{ 0x0000, { NULL }, { { NULL, 0, 0, 0, 0, 0 } } }
599 };
600 
601 
602 /* Insmod parameters */
603 static int force;
604 module_param(force, bool, 0);
605 MODULE_PARM_DESC(force, "Set to one to force detection.");
606 /* Default verbose is 1, since this driver is still in the testing phase */
607 static int verbose = 1;
608 module_param(verbose, bool, 0644);
609 MODULE_PARM_DESC(verbose, "Enable/disable verbose error reporting");
610 
611 
612 /* wait while the uguru is busy (usually after a write) */
613 static int abituguru3_wait_while_busy(struct abituguru3_data *data)
614 {
615 	u8 x;
616 	int timeout = ABIT_UGURU3_WAIT_TIMEOUT;
617 
618 	while ((x = inb_p(data->addr + ABIT_UGURU3_DATA)) &
619 			ABIT_UGURU3_STATUS_BUSY) {
620 		timeout--;
621 		if (timeout == 0)
622 			return x;
623 		/* sleep a bit before our last try, to give the uGuru3 one
624 		   last chance to respond. */
625 		if (timeout == 1)
626 			msleep(1);
627 	}
628 	return ABIT_UGURU3_SUCCESS;
629 }
630 
631 /* wait till uguru is ready to be read */
632 static int abituguru3_wait_for_read(struct abituguru3_data *data)
633 {
634 	u8 x;
635 	int timeout = ABIT_UGURU3_WAIT_TIMEOUT;
636 
637 	while (!((x = inb_p(data->addr + ABIT_UGURU3_DATA)) &
638 			ABIT_UGURU3_STATUS_READY_FOR_READ)) {
639 		timeout--;
640 		if (timeout == 0)
641 			return x;
642 		/* sleep a bit before our last try, to give the uGuru3 one
643 		   last chance to respond. */
644 		if (timeout == 1)
645 			msleep(1);
646 	}
647 	return ABIT_UGURU3_SUCCESS;
648 }
649 
650 /* This synchronizes us with the uGuru3's protocol state machine, this
651    must be done before each command. */
652 static int abituguru3_synchronize(struct abituguru3_data *data)
653 {
654 	int x, timeout = ABIT_UGURU3_SYNCHRONIZE_TIMEOUT;
655 
656 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
657 		ABIT_UGURU3_DEBUG("synchronize timeout during initial busy "
658 			"wait, status: 0x%02x\n", x);
659 		return -EIO;
660 	}
661 
662 	outb(0x20, data->addr + ABIT_UGURU3_DATA);
663 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
664 		ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x20, "
665 			"status: 0x%02x\n", x);
666 		return -EIO;
667 	}
668 
669 	outb(0x10, data->addr + ABIT_UGURU3_CMD);
670 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
671 		ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x10, "
672 			"status: 0x%02x\n", x);
673 		return -EIO;
674 	}
675 
676 	outb(0x00, data->addr + ABIT_UGURU3_CMD);
677 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
678 		ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x00, "
679 			"status: 0x%02x\n", x);
680 		return -EIO;
681 	}
682 
683 	if ((x = abituguru3_wait_for_read(data)) != ABIT_UGURU3_SUCCESS) {
684 		ABIT_UGURU3_DEBUG("synchronize timeout waiting for read, "
685 			"status: 0x%02x\n", x);
686 		return -EIO;
687 	}
688 
689 	while ((x = inb(data->addr + ABIT_UGURU3_CMD)) != 0xAC) {
690 		timeout--;
691 		if (timeout == 0) {
692 			ABIT_UGURU3_DEBUG("synchronize timeout cmd does not "
693 				"hold 0xAC after synchronize, cmd: 0x%02x\n",
694 				x);
695 			return -EIO;
696 		}
697 		msleep(1);
698 	}
699 	return 0;
700 }
701 
702 /* Read count bytes from sensor sensor_addr in bank bank_addr and store the
703    result in buf */
704 static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset,
705 	u8 count, u8 *buf)
706 {
707 	int i, x;
708 
709 	if ((x = abituguru3_synchronize(data)))
710 		return x;
711 
712 	outb(0x1A, data->addr + ABIT_UGURU3_DATA);
713 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
714 		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
715 			"sending 0x1A, status: 0x%02x\n", (unsigned int)bank,
716 			(unsigned int)offset, x);
717 		return -EIO;
718 	}
719 
720 	outb(bank, data->addr + ABIT_UGURU3_CMD);
721 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
722 		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
723 			"sending the bank, status: 0x%02x\n",
724 			(unsigned int)bank, (unsigned int)offset, x);
725 		return -EIO;
726 	}
727 
728 	outb(offset, data->addr + ABIT_UGURU3_CMD);
729 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
730 		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
731 			"sending the offset, status: 0x%02x\n",
732 			(unsigned int)bank, (unsigned int)offset, x);
733 		return -EIO;
734 	}
735 
736 	outb(count, data->addr + ABIT_UGURU3_CMD);
737 	if ((x = abituguru3_wait_while_busy(data)) != ABIT_UGURU3_SUCCESS) {
738 		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
739 			"sending the count, status: 0x%02x\n",
740 			(unsigned int)bank, (unsigned int)offset, x);
741 		return -EIO;
742 	}
743 
744 	for (i = 0; i < count; i++) {
745 		if ((x = abituguru3_wait_for_read(data)) !=
746 				ABIT_UGURU3_SUCCESS) {
747 			ABIT_UGURU3_DEBUG("timeout reading byte %d from "
748 				"0x%02x:0x%02x, status: 0x%02x\n", i,
749 				(unsigned int)bank, (unsigned int)offset, x);
750 			break;
751 		}
752 		buf[i] = inb(data->addr + ABIT_UGURU3_CMD);
753 	}
754 	return i;
755 }
756 
757 /* Sensor settings are stored 1 byte per offset with the bytes
758    placed add consecutive offsets. */
759 static int abituguru3_read_increment_offset(struct abituguru3_data *data,
760 					    u8 bank, u8 offset, u8 count,
761 					    u8 *buf, int offset_count)
762 {
763 	int i, x;
764 
765 	for (i = 0; i < offset_count; i++)
766 		if ((x = abituguru3_read(data, bank, offset + i, count,
767 				buf + i * count)) != count) {
768 			if (x < 0)
769 				return x;
770 			return i * count + x;
771 		}
772 
773 	return i * count;
774 }
775 
776 /* Following are the sysfs callback functions. These functions expect:
777    sensor_device_attribute_2->index:   index into the data->sensors array
778    sensor_device_attribute_2->nr:      register offset, bitmask or NA. */
779 static struct abituguru3_data *abituguru3_update_device(struct device *dev);
780 
781 static ssize_t show_value(struct device *dev,
782 	struct device_attribute *devattr, char *buf)
783 {
784 	int value;
785 	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
786 	struct abituguru3_data *data = abituguru3_update_device(dev);
787 	const struct abituguru3_sensor_info *sensor;
788 
789 	if (!data)
790 		return -EIO;
791 
792 	sensor = &data->sensors[attr->index];
793 
794 	/* are we reading a setting, or is this a normal read? */
795 	if (attr->nr)
796 		value = data->settings[sensor->port][attr->nr];
797 	else
798 		value = data->value[sensor->port];
799 
800 	/* convert the value */
801 	value = (value * sensor->multiplier) / sensor->divisor +
802 		sensor->offset;
803 
804 	/* alternatively we could update the sensors settings struct for this,
805 	   but then its contents would differ from the windows sw ini files */
806 	if (sensor->type == ABIT_UGURU3_TEMP_SENSOR)
807 		value *= 1000;
808 
809 	return sprintf(buf, "%d\n", value);
810 }
811 
812 static ssize_t show_alarm(struct device *dev,
813 	struct device_attribute *devattr, char *buf)
814 {
815 	int port;
816 	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
817 	struct abituguru3_data *data = abituguru3_update_device(dev);
818 
819 	if (!data)
820 		return -EIO;
821 
822 	port = data->sensors[attr->index].port;
823 
824 	/* See if the alarm bit for this sensor is set and if a bitmask is
825 	   given in attr->nr also check if the alarm matches the type of alarm
826 	   we're looking for (for volt it can be either low or high). The type
827 	   is stored in a few readonly bits in the settings of the sensor. */
828 	if ((data->alarms[port / 8] & (0x01 << (port % 8))) &&
829 			(!attr->nr || (data->settings[port][0] & attr->nr)))
830 		return sprintf(buf, "1\n");
831 	else
832 		return sprintf(buf, "0\n");
833 }
834 
835 static ssize_t show_mask(struct device *dev,
836 	struct device_attribute *devattr, char *buf)
837 {
838 	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
839 	struct abituguru3_data *data = dev_get_drvdata(dev);
840 
841 	if (data->settings[data->sensors[attr->index].port][0] & attr->nr)
842 		return sprintf(buf, "1\n");
843 	else
844 		return sprintf(buf, "0\n");
845 }
846 
847 static ssize_t show_label(struct device *dev,
848 	struct device_attribute *devattr, char *buf)
849 {
850 	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
851 	struct abituguru3_data *data = dev_get_drvdata(dev);
852 
853 	return sprintf(buf, "%s\n", data->sensors[attr->index].name);
854 }
855 
856 static ssize_t show_name(struct device *dev,
857 	struct device_attribute *devattr, char *buf)
858 {
859 	return sprintf(buf, "%s\n", ABIT_UGURU3_NAME);
860 }
861 
862 /* Sysfs attr templates, the real entries are generated automatically. */
863 static const
864 struct sensor_device_attribute_2 abituguru3_sysfs_templ[3][10] = { {
865 	SENSOR_ATTR_2(in%d_input, 0444, show_value, NULL, 0, 0),
866 	SENSOR_ATTR_2(in%d_min, 0444, show_value, NULL, 1, 0),
867 	SENSOR_ATTR_2(in%d_max, 0444, show_value, NULL, 2, 0),
868 	SENSOR_ATTR_2(in%d_min_alarm, 0444, show_alarm, NULL,
869 		ABIT_UGURU3_VOLT_LOW_ALARM_FLAG, 0),
870 	SENSOR_ATTR_2(in%d_max_alarm, 0444, show_alarm, NULL,
871 		ABIT_UGURU3_VOLT_HIGH_ALARM_FLAG, 0),
872 	SENSOR_ATTR_2(in%d_beep, 0444, show_mask, NULL,
873 		ABIT_UGURU3_BEEP_ENABLE, 0),
874 	SENSOR_ATTR_2(in%d_shutdown, 0444, show_mask, NULL,
875 		ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
876 	SENSOR_ATTR_2(in%d_min_alarm_enable, 0444, show_mask, NULL,
877 		ABIT_UGURU3_VOLT_LOW_ALARM_ENABLE, 0),
878 	SENSOR_ATTR_2(in%d_max_alarm_enable, 0444, show_mask, NULL,
879 		ABIT_UGURU3_VOLT_HIGH_ALARM_ENABLE, 0),
880 	SENSOR_ATTR_2(in%d_label, 0444, show_label, NULL, 0, 0)
881 	}, {
882 	SENSOR_ATTR_2(temp%d_input, 0444, show_value, NULL, 0, 0),
883 	SENSOR_ATTR_2(temp%d_max, 0444, show_value, NULL, 1, 0),
884 	SENSOR_ATTR_2(temp%d_crit, 0444, show_value, NULL, 2, 0),
885 	SENSOR_ATTR_2(temp%d_alarm, 0444, show_alarm, NULL, 0, 0),
886 	SENSOR_ATTR_2(temp%d_beep, 0444, show_mask, NULL,
887 		ABIT_UGURU3_BEEP_ENABLE, 0),
888 	SENSOR_ATTR_2(temp%d_shutdown, 0444, show_mask, NULL,
889 		ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
890 	SENSOR_ATTR_2(temp%d_alarm_enable, 0444, show_mask, NULL,
891 		ABIT_UGURU3_TEMP_HIGH_ALARM_ENABLE, 0),
892 	SENSOR_ATTR_2(temp%d_label, 0444, show_label, NULL, 0, 0)
893 	}, {
894 	SENSOR_ATTR_2(fan%d_input, 0444, show_value, NULL, 0, 0),
895 	SENSOR_ATTR_2(fan%d_min, 0444, show_value, NULL, 1, 0),
896 	SENSOR_ATTR_2(fan%d_alarm, 0444, show_alarm, NULL, 0, 0),
897 	SENSOR_ATTR_2(fan%d_beep, 0444, show_mask, NULL,
898 		ABIT_UGURU3_BEEP_ENABLE, 0),
899 	SENSOR_ATTR_2(fan%d_shutdown, 0444, show_mask, NULL,
900 		ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
901 	SENSOR_ATTR_2(fan%d_alarm_enable, 0444, show_mask, NULL,
902 		ABIT_UGURU3_FAN_LOW_ALARM_ENABLE, 0),
903 	SENSOR_ATTR_2(fan%d_label, 0444, show_label, NULL, 0, 0)
904 } };
905 
906 static struct sensor_device_attribute_2 abituguru3_sysfs_attr[] = {
907 	SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0),
908 };
909 
910 static int __devinit abituguru3_probe(struct platform_device *pdev)
911 {
912 	const int no_sysfs_attr[3] = { 10, 8, 7 };
913 	int sensor_index[3] = { 0, 1, 1 };
914 	struct abituguru3_data *data;
915 	int i, j, type, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV;
916 	char *sysfs_filename;
917 	u8 buf[2];
918 	u16 id;
919 
920 	if (!(data = kzalloc(sizeof(struct abituguru3_data), GFP_KERNEL)))
921 		return -ENOMEM;
922 
923 	data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
924 	mutex_init(&data->update_lock);
925 	platform_set_drvdata(pdev, data);
926 
927 	/* Read the motherboard ID */
928 	if ((i = abituguru3_read(data, ABIT_UGURU3_MISC_BANK,
929 			ABIT_UGURU3_BOARD_ID, 2, buf)) != 2) {
930 		goto abituguru3_probe_error;
931 	}
932 
933 	/* Completely read the uGuru to see if one really is there */
934 	if (!abituguru3_update_device(&pdev->dev))
935 		goto abituguru3_probe_error;
936 
937 	/* lookup the ID in our motherboard table */
938 	id = ((u16)buf[0] << 8) | (u16)buf[1];
939 	for (i = 0; abituguru3_motherboards[i].id; i++)
940 		if (abituguru3_motherboards[i].id == id)
941 			break;
942 	if (!abituguru3_motherboards[i].id) {
943 		printk(KERN_ERR ABIT_UGURU3_NAME ": error unknown motherboard "
944 			"ID: %04X. Please report this to the abituguru3 "
945 			"maintainer (see MAINTAINERS)\n", (unsigned int)id);
946 		goto abituguru3_probe_error;
947 	}
948 	data->sensors = abituguru3_motherboards[i].sensors;
949 
950 	printk(KERN_INFO ABIT_UGURU3_NAME ": found Abit uGuru3, motherboard "
951 		"ID: %04X\n", (unsigned int)id);
952 
953 	/* Fill the sysfs attr array */
954 	sysfs_attr_i = 0;
955 	sysfs_filename = data->sysfs_names;
956 	sysfs_names_free = ABIT_UGURU3_SYSFS_NAMES_LENGTH;
957 	for (i = 0; data->sensors[i].name; i++) {
958 		/* Fail safe check, this should never happen! */
959 		if (i >= ABIT_UGURU3_MAX_NO_SENSORS) {
960 			printk(KERN_ERR ABIT_UGURU3_NAME
961 				": Fatal error motherboard has more sensors "
962 				"then ABIT_UGURU3_MAX_NO_SENSORS. This should "
963 				"never happen please report to the abituguru3 "
964 				"maintainer (see MAINTAINERS)\n");
965 			res = -ENAMETOOLONG;
966 			goto abituguru3_probe_error;
967 		}
968 		type = data->sensors[i].type;
969 		for (j = 0; j < no_sysfs_attr[type]; j++) {
970 			used = snprintf(sysfs_filename, sysfs_names_free,
971 				abituguru3_sysfs_templ[type][j].dev_attr.attr.
972 				name, sensor_index[type]) + 1;
973 			data->sysfs_attr[sysfs_attr_i] =
974 				abituguru3_sysfs_templ[type][j];
975 			data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
976 				sysfs_filename;
977 			data->sysfs_attr[sysfs_attr_i].index = i;
978 			sysfs_filename += used;
979 			sysfs_names_free -= used;
980 			sysfs_attr_i++;
981 		}
982 		sensor_index[type]++;
983 	}
984 	/* Fail safe check, this should never happen! */
985 	if (sysfs_names_free < 0) {
986 		printk(KERN_ERR ABIT_UGURU3_NAME
987 			": Fatal error ran out of space for sysfs attr names. "
988 			"This should never happen please report to the "
989 			"abituguru3 maintainer (see MAINTAINERS)\n");
990 		res = -ENAMETOOLONG;
991 		goto abituguru3_probe_error;
992 	}
993 
994 	/* Register sysfs hooks */
995 	for (i = 0; i < sysfs_attr_i; i++)
996 		if (device_create_file(&pdev->dev,
997 				&data->sysfs_attr[i].dev_attr))
998 			goto abituguru3_probe_error;
999 	for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
1000 		if (device_create_file(&pdev->dev,
1001 				&abituguru3_sysfs_attr[i].dev_attr))
1002 			goto abituguru3_probe_error;
1003 
1004 	data->hwmon_dev = hwmon_device_register(&pdev->dev);
1005 	if (IS_ERR(data->hwmon_dev)) {
1006 		res = PTR_ERR(data->hwmon_dev);
1007 		goto abituguru3_probe_error;
1008 	}
1009 
1010 	return 0; /* success */
1011 
1012 abituguru3_probe_error:
1013 	for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
1014 		device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
1015 	for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
1016 		device_remove_file(&pdev->dev,
1017 			&abituguru3_sysfs_attr[i].dev_attr);
1018 	kfree(data);
1019 	return res;
1020 }
1021 
1022 static int __devexit abituguru3_remove(struct platform_device *pdev)
1023 {
1024 	int i;
1025 	struct abituguru3_data *data = platform_get_drvdata(pdev);
1026 
1027 	platform_set_drvdata(pdev, NULL);
1028 	hwmon_device_unregister(data->hwmon_dev);
1029 	for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
1030 		device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
1031 	for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
1032 		device_remove_file(&pdev->dev,
1033 			&abituguru3_sysfs_attr[i].dev_attr);
1034 	kfree(data);
1035 
1036 	return 0;
1037 }
1038 
1039 static struct abituguru3_data *abituguru3_update_device(struct device *dev)
1040 {
1041 	int i;
1042 	struct abituguru3_data *data = dev_get_drvdata(dev);
1043 
1044 	mutex_lock(&data->update_lock);
1045 	if (!data->valid || time_after(jiffies, data->last_updated + HZ)) {
1046 		/* Clear data->valid while updating */
1047 		data->valid = 0;
1048 		/* Read alarms */
1049 		if (abituguru3_read_increment_offset(data,
1050 				ABIT_UGURU3_SETTINGS_BANK,
1051 				ABIT_UGURU3_ALARMS_START,
1052 				1, data->alarms, 48/8) != (48/8))
1053 			goto LEAVE_UPDATE;
1054 		/* Read in and temp sensors (3 byte settings / sensor) */
1055 		for (i = 0; i < 32; i++) {
1056 			if (abituguru3_read(data, ABIT_UGURU3_SENSORS_BANK,
1057 					ABIT_UGURU3_VALUES_START + i,
1058 					1, &data->value[i]) != 1)
1059 				goto LEAVE_UPDATE;
1060 			if (abituguru3_read_increment_offset(data,
1061 					ABIT_UGURU3_SETTINGS_BANK,
1062 					ABIT_UGURU3_SETTINGS_START + i * 3,
1063 					1,
1064 					data->settings[i], 3) != 3)
1065 				goto LEAVE_UPDATE;
1066 		}
1067 		/* Read temp sensors (2 byte settings / sensor) */
1068 		for (i = 0; i < 16; i++) {
1069 			if (abituguru3_read(data, ABIT_UGURU3_SENSORS_BANK,
1070 					ABIT_UGURU3_VALUES_START + 32 + i,
1071 					1, &data->value[32 + i]) != 1)
1072 				goto LEAVE_UPDATE;
1073 			if (abituguru3_read_increment_offset(data,
1074 					ABIT_UGURU3_SETTINGS_BANK,
1075 					ABIT_UGURU3_SETTINGS_START + 32 * 3 +
1076 						i * 2, 1,
1077 					data->settings[32 + i], 2) != 2)
1078 				goto LEAVE_UPDATE;
1079 		}
1080 		data->last_updated = jiffies;
1081 		data->valid = 1;
1082 	}
1083 LEAVE_UPDATE:
1084 	mutex_unlock(&data->update_lock);
1085 	if (data->valid)
1086 		return data;
1087 	else
1088 		return NULL;
1089 }
1090 
1091 #ifdef CONFIG_PM
1092 static int abituguru3_suspend(struct platform_device *pdev, pm_message_t state)
1093 {
1094 	struct abituguru3_data *data = platform_get_drvdata(pdev);
1095 	/* make sure all communications with the uguru3 are done and no new
1096 	   ones are started */
1097 	mutex_lock(&data->update_lock);
1098 	return 0;
1099 }
1100 
1101 static int abituguru3_resume(struct platform_device *pdev)
1102 {
1103 	struct abituguru3_data *data = platform_get_drvdata(pdev);
1104 	mutex_unlock(&data->update_lock);
1105 	return 0;
1106 }
1107 #else
1108 #define abituguru3_suspend	NULL
1109 #define abituguru3_resume	NULL
1110 #endif /* CONFIG_PM */
1111 
1112 static struct platform_driver abituguru3_driver = {
1113 	.driver = {
1114 		.owner	= THIS_MODULE,
1115 		.name	= ABIT_UGURU3_NAME,
1116 	},
1117 	.probe	= abituguru3_probe,
1118 	.remove	= __devexit_p(abituguru3_remove),
1119 	.suspend = abituguru3_suspend,
1120 	.resume = abituguru3_resume
1121 };
1122 
1123 #ifdef CONFIG_DMI
1124 
1125 static int __init abituguru3_dmi_detect(void)
1126 {
1127 	const char *board_vendor, *board_name;
1128 	int i, err = (force) ? 1 : -ENODEV;
1129 	const char *const *dmi_name;
1130 	size_t sublen;
1131 
1132 	board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
1133 	if (!board_vendor || strcmp(board_vendor, "http://www.abit.com.tw/"))
1134 		return err;
1135 
1136 	board_name = dmi_get_system_info(DMI_BOARD_NAME);
1137 	if (!board_name)
1138 		return err;
1139 
1140 	/* At the moment, we don't care about the part of the vendor
1141 	 * DMI string contained in brackets. Truncate the string at
1142 	 * the first occurrence of a bracket. Trim any trailing space
1143 	 * from the substring.
1144 	 */
1145 	sublen = strcspn(board_name, "(");
1146 	while (sublen > 0 && board_name[sublen - 1] == ' ')
1147 		sublen--;
1148 
1149 	for (i = 0; abituguru3_motherboards[i].id; i++) {
1150 		dmi_name = abituguru3_motherboards[i].dmi_name;
1151 		for ( ; *dmi_name; dmi_name++) {
1152 			if (strlen(*dmi_name) != sublen)
1153 				continue;
1154 			if (!strncasecmp(board_name, *dmi_name, sublen))
1155 				return 0;
1156 		}
1157 	}
1158 
1159 	/* No match found */
1160 	return 1;
1161 }
1162 
1163 #else /* !CONFIG_DMI */
1164 
1165 static inline int abituguru3_dmi_detect(void)
1166 {
1167 	return 1;
1168 }
1169 
1170 #endif /* CONFIG_DMI */
1171 
1172 /* FIXME: Manual detection should die eventually; we need to collect stable
1173  *        DMI model names first before we can rely entirely on CONFIG_DMI.
1174  */
1175 
1176 static int __init abituguru3_detect(void)
1177 {
1178 	/* See if there is an uguru3 there. An idle uGuru3 will hold 0x00 or
1179 	   0x08 at DATA and 0xAC at CMD. Sometimes the uGuru3 will hold 0x05
1180 	   or 0x55 at CMD instead, why is unknown. */
1181 	u8 data_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_DATA);
1182 	u8 cmd_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_CMD);
1183 	if (((data_val == 0x00) || (data_val == 0x08)) &&
1184 			((cmd_val == 0xAC) || (cmd_val == 0x05) ||
1185 			 (cmd_val == 0x55)))
1186 		return 0;
1187 
1188 	ABIT_UGURU3_DEBUG("no Abit uGuru3 found, data = 0x%02X, cmd = "
1189 		"0x%02X\n", (unsigned int)data_val, (unsigned int)cmd_val);
1190 
1191 	if (force) {
1192 		printk(KERN_INFO ABIT_UGURU3_NAME ": Assuming Abit uGuru3 is "
1193 				"present because of \"force\" parameter\n");
1194 		return 0;
1195 	}
1196 
1197 	/* No uGuru3 found */
1198 	return -ENODEV;
1199 }
1200 
1201 static struct platform_device *abituguru3_pdev;
1202 
1203 static int __init abituguru3_init(void)
1204 {
1205 	struct resource res = { .flags = IORESOURCE_IO };
1206 	int err;
1207 
1208 	/* Attempt DMI detection first */
1209 	err = abituguru3_dmi_detect();
1210 	if (err < 0)
1211 		return err;
1212 
1213 	/* Fall back to manual detection if there was no exact
1214 	 * board name match, or force was specified.
1215 	 */
1216 	if (err > 0) {
1217 		err = abituguru3_detect();
1218 		if (err)
1219 			return err;
1220 
1221 #ifdef CONFIG_DMI
1222 		printk(KERN_WARNING ABIT_UGURU3_NAME ": this motherboard was "
1223 			"not detected using DMI. Please send the output of "
1224 			"\"dmidecode\" to the abituguru3 maintainer "
1225 			"(see MAINTAINERS)\n");
1226 #endif
1227 	}
1228 
1229 	err = platform_driver_register(&abituguru3_driver);
1230 	if (err)
1231 		goto exit;
1232 
1233 	abituguru3_pdev = platform_device_alloc(ABIT_UGURU3_NAME,
1234 						ABIT_UGURU3_BASE);
1235 	if (!abituguru3_pdev) {
1236 		printk(KERN_ERR ABIT_UGURU3_NAME
1237 			": Device allocation failed\n");
1238 		err = -ENOMEM;
1239 		goto exit_driver_unregister;
1240 	}
1241 
1242 	res.start = ABIT_UGURU3_BASE;
1243 	res.end = ABIT_UGURU3_BASE + ABIT_UGURU3_REGION_LENGTH - 1;
1244 	res.name = ABIT_UGURU3_NAME;
1245 
1246 	err = platform_device_add_resources(abituguru3_pdev, &res, 1);
1247 	if (err) {
1248 		printk(KERN_ERR ABIT_UGURU3_NAME
1249 			": Device resource addition failed (%d)\n", err);
1250 		goto exit_device_put;
1251 	}
1252 
1253 	err = platform_device_add(abituguru3_pdev);
1254 	if (err) {
1255 		printk(KERN_ERR ABIT_UGURU3_NAME
1256 			": Device addition failed (%d)\n", err);
1257 		goto exit_device_put;
1258 	}
1259 
1260 	return 0;
1261 
1262 exit_device_put:
1263 	platform_device_put(abituguru3_pdev);
1264 exit_driver_unregister:
1265 	platform_driver_unregister(&abituguru3_driver);
1266 exit:
1267 	return err;
1268 }
1269 
1270 static void __exit abituguru3_exit(void)
1271 {
1272 	platform_device_unregister(abituguru3_pdev);
1273 	platform_driver_unregister(&abituguru3_driver);
1274 }
1275 
1276 MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>");
1277 MODULE_DESCRIPTION("Abit uGuru3 Sensor device");
1278 MODULE_LICENSE("GPL");
1279 
1280 module_init(abituguru3_init);
1281 module_exit(abituguru3_exit);
1282