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f2b84bbc HG |
1 | /* |
2 | abituguru.c Copyright (c) 2005-2006 Hans de Goede <j.w.r.degoede@hhs.nl> | |
3 | ||
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software | |
16 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | /* | |
19 | This driver supports the sensor part of the custom Abit uGuru chip found | |
20 | on Abit uGuru motherboards. Note: because of lack of specs the CPU / RAM / | |
21 | etc voltage & frequency control is not supported! | |
22 | */ | |
23 | #include <linux/module.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/jiffies.h> | |
27 | #include <linux/mutex.h> | |
28 | #include <linux/err.h> | |
29 | #include <linux/platform_device.h> | |
30 | #include <linux/hwmon.h> | |
31 | #include <linux/hwmon-sysfs.h> | |
32 | #include <asm/io.h> | |
33 | ||
34 | /* Banks */ | |
35 | #define ABIT_UGURU_ALARM_BANK 0x20 /* 1x 3 bytes */ | |
36 | #define ABIT_UGURU_SENSOR_BANK1 0x21 /* 16x volt and temp */ | |
37 | #define ABIT_UGURU_FAN_PWM 0x24 /* 3x 5 bytes */ | |
38 | #define ABIT_UGURU_SENSOR_BANK2 0x26 /* fans */ | |
a2392e0b HG |
39 | /* max nr of sensors in bank1, a bank1 sensor can be in, temp or nc */ |
40 | #define ABIT_UGURU_MAX_BANK1_SENSORS 16 | |
41 | /* Warning if you increase one of the 2 MAX defines below to 10 or higher you | |
42 | should adjust the belonging _NAMES_LENGTH macro for the 2 digit number! */ | |
f2b84bbc HG |
43 | /* max nr of sensors in bank2, currently mb's with max 6 fans are known */ |
44 | #define ABIT_UGURU_MAX_BANK2_SENSORS 6 | |
45 | /* max nr of pwm outputs, currently mb's with max 5 pwm outputs are known */ | |
46 | #define ABIT_UGURU_MAX_PWMS 5 | |
47 | /* uGuru sensor bank 1 flags */ /* Alarm if: */ | |
48 | #define ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE 0x01 /* temp over warn */ | |
49 | #define ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE 0x02 /* volt over max */ | |
50 | #define ABIT_UGURU_VOLT_LOW_ALARM_ENABLE 0x04 /* volt under min */ | |
51 | #define ABIT_UGURU_TEMP_HIGH_ALARM_FLAG 0x10 /* temp is over warn */ | |
52 | #define ABIT_UGURU_VOLT_HIGH_ALARM_FLAG 0x20 /* volt is over max */ | |
53 | #define ABIT_UGURU_VOLT_LOW_ALARM_FLAG 0x40 /* volt is under min */ | |
54 | /* uGuru sensor bank 2 flags */ /* Alarm if: */ | |
55 | #define ABIT_UGURU_FAN_LOW_ALARM_ENABLE 0x01 /* fan under min */ | |
56 | /* uGuru sensor bank common flags */ | |
57 | #define ABIT_UGURU_BEEP_ENABLE 0x08 /* beep if alarm */ | |
58 | #define ABIT_UGURU_SHUTDOWN_ENABLE 0x80 /* shutdown if alarm */ | |
59 | /* uGuru fan PWM (speed control) flags */ | |
60 | #define ABIT_UGURU_FAN_PWM_ENABLE 0x80 /* enable speed control */ | |
61 | /* Values used for conversion */ | |
62 | #define ABIT_UGURU_FAN_MAX 15300 /* RPM */ | |
63 | /* Bank1 sensor types */ | |
64 | #define ABIT_UGURU_IN_SENSOR 0 | |
65 | #define ABIT_UGURU_TEMP_SENSOR 1 | |
66 | #define ABIT_UGURU_NC 2 | |
67 | /* Timeouts / Retries, if these turn out to need a lot of fiddling we could | |
68 | convert them to params. */ | |
69 | /* 250 was determined by trial and error, 200 works most of the time, but not | |
70 | always. I assume this is cpu-speed independent, since the ISA-bus and not | |
71 | the CPU should be the bottleneck. Note that 250 sometimes is still not | |
72 | enough (only reported on AN7 mb) this is handled by a higher layer. */ | |
73 | #define ABIT_UGURU_WAIT_TIMEOUT 250 | |
74 | /* Normally all expected status in abituguru_ready, are reported after the | |
75 | first read, but sometimes not and we need to poll, 5 polls was not enough | |
76 | 50 sofar is. */ | |
77 | #define ABIT_UGURU_READY_TIMEOUT 50 | |
78 | /* Maximum 3 retries on timedout reads/writes, delay 200 ms before retrying */ | |
79 | #define ABIT_UGURU_MAX_RETRIES 3 | |
80 | #define ABIT_UGURU_RETRY_DELAY (HZ/5) | |
a2392e0b | 81 | /* Maximum 2 timeouts in abituguru_update_device, iow 3 in a row is an error */ |
f2b84bbc | 82 | #define ABIT_UGURU_MAX_TIMEOUTS 2 |
a2392e0b HG |
83 | /* utility macros */ |
84 | #define ABIT_UGURU_NAME "abituguru" | |
85 | #define ABIT_UGURU_DEBUG(level, format, arg...) \ | |
86 | if (level <= verbose) \ | |
87 | printk(KERN_DEBUG ABIT_UGURU_NAME ": " format , ## arg) | |
88 | /* Macros to help calculate the sysfs_names array length */ | |
89 | /* sum of strlen of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0, | |
90 | in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0 */ | |
91 | #define ABITUGURU_IN_NAMES_LENGTH (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14) | |
92 | /* sum of strlen of: temp??_input\0, temp??_max\0, temp??_crit\0, | |
93 | temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0 */ | |
94 | #define ABITUGURU_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16) | |
95 | /* sum of strlen of: fan?_input\0, fan?_min\0, fan?_alarm\0, | |
96 | fan?_alarm_enable\0, fan?_beep\0, fan?_shutdown\0 */ | |
97 | #define ABITUGURU_FAN_NAMES_LENGTH (11 + 9 + 11 + 18 + 10 + 14) | |
98 | /* sum of strlen of: pwm?_enable\0, pwm?_auto_channels_temp\0, | |
99 | pwm?_auto_point{1,2}_pwm\0, pwm?_auto_point{1,2}_temp\0 */ | |
100 | #define ABITUGURU_PWM_NAMES_LENGTH (12 + 24 + 2 * 21 + 2 * 22) | |
101 | /* IN_NAMES_LENGTH > TEMP_NAMES_LENGTH so assume all bank1 sensors are in */ | |
102 | #define ABITUGURU_SYSFS_NAMES_LENGTH ( \ | |
103 | ABIT_UGURU_MAX_BANK1_SENSORS * ABITUGURU_IN_NAMES_LENGTH + \ | |
104 | ABIT_UGURU_MAX_BANK2_SENSORS * ABITUGURU_FAN_NAMES_LENGTH + \ | |
105 | ABIT_UGURU_MAX_PWMS * ABITUGURU_PWM_NAMES_LENGTH) | |
106 | ||
107 | /* All the macros below are named identical to the oguru and oguru2 programs | |
f2b84bbc HG |
108 | reverse engineered by Olle Sandberg, hence the names might not be 100% |
109 | logical. I could come up with better names, but I prefer keeping the names | |
110 | identical so that this driver can be compared with his work more easily. */ | |
111 | /* Two i/o-ports are used by uGuru */ | |
112 | #define ABIT_UGURU_BASE 0x00E0 | |
113 | /* Used to tell uGuru what to read and to read the actual data */ | |
114 | #define ABIT_UGURU_CMD 0x00 | |
115 | /* Mostly used to check if uGuru is busy */ | |
116 | #define ABIT_UGURU_DATA 0x04 | |
117 | #define ABIT_UGURU_REGION_LENGTH 5 | |
118 | /* uGuru status' */ | |
119 | #define ABIT_UGURU_STATUS_WRITE 0x00 /* Ready to be written */ | |
120 | #define ABIT_UGURU_STATUS_READ 0x01 /* Ready to be read */ | |
121 | #define ABIT_UGURU_STATUS_INPUT 0x08 /* More input */ | |
122 | #define ABIT_UGURU_STATUS_READY 0x09 /* Ready to be written */ | |
f2b84bbc HG |
123 | |
124 | /* Constants */ | |
125 | /* in (Volt) sensors go up to 3494 mV, temp to 255000 millidegrees Celsius */ | |
126 | static const int abituguru_bank1_max_value[2] = { 3494, 255000 }; | |
127 | /* Min / Max allowed values for sensor2 (fan) alarm threshold, these values | |
128 | correspond to 300-3000 RPM */ | |
129 | static const u8 abituguru_bank2_min_threshold = 5; | |
130 | static const u8 abituguru_bank2_max_threshold = 50; | |
131 | /* Register 0 is a bitfield, 1 and 2 are pwm settings (255 = 100%), 3 and 4 | |
132 | are temperature trip points. */ | |
133 | static const int abituguru_pwm_settings_multiplier[5] = { 0, 1, 1, 1000, 1000 }; | |
134 | /* Min / Max allowed values for pwm_settings. Note: pwm1 (CPU fan) is a | |
135 | special case the minium allowed pwm% setting for this is 30% (77) on | |
136 | some MB's this special case is handled in the code! */ | |
137 | static const u8 abituguru_pwm_min[5] = { 0, 170, 170, 25, 25 }; | |
138 | static const u8 abituguru_pwm_max[5] = { 0, 255, 255, 75, 75 }; | |
139 | ||
140 | ||
141 | /* Insmod parameters */ | |
142 | static int force; | |
143 | module_param(force, bool, 0); | |
144 | MODULE_PARM_DESC(force, "Set to one to force detection."); | |
145 | static int fan_sensors; | |
146 | module_param(fan_sensors, int, 0); | |
147 | MODULE_PARM_DESC(fan_sensors, "Number of fan sensors on the uGuru " | |
148 | "(0 = autodetect)"); | |
149 | static int pwms; | |
150 | module_param(pwms, int, 0); | |
151 | MODULE_PARM_DESC(pwms, "Number of PWMs on the uGuru " | |
152 | "(0 = autodetect)"); | |
153 | ||
154 | /* Default verbose is 2, since this driver is still in the testing phase */ | |
155 | static int verbose = 2; | |
156 | module_param(verbose, int, 0644); | |
157 | MODULE_PARM_DESC(verbose, "How verbose should the driver be? (0-3):\n" | |
158 | " 0 normal output\n" | |
159 | " 1 + verbose error reporting\n" | |
160 | " 2 + sensors type probing info\n" | |
161 | " 3 + retryable error reporting"); | |
162 | ||
163 | ||
164 | /* For the Abit uGuru, we need to keep some data in memory. | |
165 | The structure is dynamically allocated, at the same time when a new | |
166 | abituguru device is allocated. */ | |
167 | struct abituguru_data { | |
168 | struct class_device *class_dev; /* hwmon registered device */ | |
169 | struct mutex update_lock; /* protect access to data and uGuru */ | |
170 | unsigned long last_updated; /* In jiffies */ | |
171 | unsigned short addr; /* uguru base address */ | |
172 | char uguru_ready; /* is the uguru in ready state? */ | |
173 | unsigned char update_timeouts; /* number of update timeouts since last | |
174 | successful update */ | |
175 | ||
176 | /* The sysfs attr and their names are generated automatically, for bank1 | |
177 | we cannot use a predefined array because we don't know beforehand | |
178 | of a sensor is a volt or a temp sensor, for bank2 and the pwms its | |
179 | easier todo things the same way. For in sensors we have 9 (temp 7) | |
180 | sysfs entries per sensor, for bank2 and pwms 6. */ | |
a2392e0b HG |
181 | struct sensor_device_attribute_2 sysfs_attr[ |
182 | ABIT_UGURU_MAX_BANK1_SENSORS * 9 + | |
f2b84bbc | 183 | ABIT_UGURU_MAX_BANK2_SENSORS * 6 + ABIT_UGURU_MAX_PWMS * 6]; |
a2392e0b HG |
184 | /* Buffer to store the dynamically generated sysfs names */ |
185 | char sysfs_names[ABITUGURU_SYSFS_NAMES_LENGTH]; | |
f2b84bbc HG |
186 | |
187 | /* Bank 1 data */ | |
a2392e0b HG |
188 | /* number of and addresses of [0] in, [1] temp sensors */ |
189 | u8 bank1_sensors[2]; | |
190 | u8 bank1_address[2][ABIT_UGURU_MAX_BANK1_SENSORS]; | |
191 | u8 bank1_value[ABIT_UGURU_MAX_BANK1_SENSORS]; | |
192 | /* This array holds 3 entries per sensor for the bank 1 sensor settings | |
f2b84bbc | 193 | (flags, min, max for voltage / flags, warn, shutdown for temp). */ |
a2392e0b | 194 | u8 bank1_settings[ABIT_UGURU_MAX_BANK1_SENSORS][3]; |
f2b84bbc HG |
195 | /* Maximum value for each sensor used for scaling in mV/millidegrees |
196 | Celsius. */ | |
a2392e0b | 197 | int bank1_max_value[ABIT_UGURU_MAX_BANK1_SENSORS]; |
f2b84bbc HG |
198 | |
199 | /* Bank 2 data, ABIT_UGURU_MAX_BANK2_SENSORS entries for bank2 */ | |
200 | u8 bank2_sensors; /* actual number of bank2 sensors found */ | |
201 | u8 bank2_value[ABIT_UGURU_MAX_BANK2_SENSORS]; | |
202 | u8 bank2_settings[ABIT_UGURU_MAX_BANK2_SENSORS][2]; /* flags, min */ | |
203 | ||
204 | /* Alarms 2 bytes for bank1, 1 byte for bank2 */ | |
205 | u8 alarms[3]; | |
206 | ||
207 | /* Fan PWM (speed control) 5 bytes per PWM */ | |
208 | u8 pwms; /* actual number of pwms found */ | |
209 | u8 pwm_settings[ABIT_UGURU_MAX_PWMS][5]; | |
210 | }; | |
211 | ||
212 | /* wait till the uguru is in the specified state */ | |
213 | static int abituguru_wait(struct abituguru_data *data, u8 state) | |
214 | { | |
215 | int timeout = ABIT_UGURU_WAIT_TIMEOUT; | |
216 | ||
217 | while (inb_p(data->addr + ABIT_UGURU_DATA) != state) { | |
218 | timeout--; | |
219 | if (timeout == 0) | |
220 | return -EBUSY; | |
221 | } | |
222 | return 0; | |
223 | } | |
224 | ||
225 | /* Put the uguru in ready for input state */ | |
226 | static int abituguru_ready(struct abituguru_data *data) | |
227 | { | |
228 | int timeout = ABIT_UGURU_READY_TIMEOUT; | |
229 | ||
230 | if (data->uguru_ready) | |
231 | return 0; | |
232 | ||
233 | /* Reset? / Prepare for next read/write cycle */ | |
234 | outb(0x00, data->addr + ABIT_UGURU_DATA); | |
235 | ||
236 | /* Wait till the uguru is ready */ | |
237 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READY)) { | |
238 | ABIT_UGURU_DEBUG(1, | |
239 | "timeout exceeded waiting for ready state\n"); | |
240 | return -EIO; | |
241 | } | |
242 | ||
243 | /* Cmd port MUST be read now and should contain 0xAC */ | |
244 | while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) { | |
245 | timeout--; | |
246 | if (timeout == 0) { | |
247 | ABIT_UGURU_DEBUG(1, | |
248 | "CMD reg does not hold 0xAC after ready command\n"); | |
249 | return -EIO; | |
250 | } | |
251 | } | |
252 | ||
253 | /* After this the ABIT_UGURU_DATA port should contain | |
254 | ABIT_UGURU_STATUS_INPUT */ | |
255 | timeout = ABIT_UGURU_READY_TIMEOUT; | |
256 | while (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) { | |
257 | timeout--; | |
258 | if (timeout == 0) { | |
259 | ABIT_UGURU_DEBUG(1, | |
260 | "state != more input after ready command\n"); | |
261 | return -EIO; | |
262 | } | |
263 | } | |
264 | ||
265 | data->uguru_ready = 1; | |
266 | return 0; | |
267 | } | |
268 | ||
269 | /* Send the bank and then sensor address to the uGuru for the next read/write | |
270 | cycle. This function gets called as the first part of a read/write by | |
271 | abituguru_read and abituguru_write. This function should never be | |
272 | called by any other function. */ | |
273 | static int abituguru_send_address(struct abituguru_data *data, | |
274 | u8 bank_addr, u8 sensor_addr, int retries) | |
275 | { | |
276 | /* assume the caller does error handling itself if it has not requested | |
277 | any retries, and thus be quiet. */ | |
278 | int report_errors = retries; | |
279 | ||
280 | for (;;) { | |
281 | /* Make sure the uguru is ready and then send the bank address, | |
282 | after this the uguru is no longer "ready". */ | |
283 | if (abituguru_ready(data) != 0) | |
284 | return -EIO; | |
285 | outb(bank_addr, data->addr + ABIT_UGURU_DATA); | |
286 | data->uguru_ready = 0; | |
287 | ||
288 | /* Wait till the uguru is ABIT_UGURU_STATUS_INPUT state again | |
289 | and send the sensor addr */ | |
290 | if (abituguru_wait(data, ABIT_UGURU_STATUS_INPUT)) { | |
291 | if (retries) { | |
292 | ABIT_UGURU_DEBUG(3, "timeout exceeded " | |
293 | "waiting for more input state, %d " | |
294 | "tries remaining\n", retries); | |
295 | set_current_state(TASK_UNINTERRUPTIBLE); | |
296 | schedule_timeout(ABIT_UGURU_RETRY_DELAY); | |
297 | retries--; | |
298 | continue; | |
299 | } | |
300 | if (report_errors) | |
301 | ABIT_UGURU_DEBUG(1, "timeout exceeded " | |
302 | "waiting for more input state " | |
303 | "(bank: %d)\n", (int)bank_addr); | |
304 | return -EBUSY; | |
305 | } | |
306 | outb(sensor_addr, data->addr + ABIT_UGURU_CMD); | |
307 | return 0; | |
308 | } | |
309 | } | |
310 | ||
311 | /* Read count bytes from sensor sensor_addr in bank bank_addr and store the | |
312 | result in buf, retry the send address part of the read retries times. */ | |
313 | static int abituguru_read(struct abituguru_data *data, | |
314 | u8 bank_addr, u8 sensor_addr, u8 *buf, int count, int retries) | |
315 | { | |
316 | int i; | |
317 | ||
318 | /* Send the address */ | |
319 | i = abituguru_send_address(data, bank_addr, sensor_addr, retries); | |
320 | if (i) | |
321 | return i; | |
322 | ||
323 | /* And read the data */ | |
324 | for (i = 0; i < count; i++) { | |
325 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) { | |
326 | ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for " | |
327 | "read state (bank: %d, sensor: %d)\n", | |
328 | (int)bank_addr, (int)sensor_addr); | |
329 | break; | |
330 | } | |
331 | buf[i] = inb(data->addr + ABIT_UGURU_CMD); | |
332 | } | |
333 | ||
334 | /* Last put the chip back in ready state */ | |
335 | abituguru_ready(data); | |
336 | ||
337 | return i; | |
338 | } | |
339 | ||
340 | /* Write count bytes from buf to sensor sensor_addr in bank bank_addr, the send | |
341 | address part of the write is always retried ABIT_UGURU_MAX_RETRIES times. */ | |
342 | static int abituguru_write(struct abituguru_data *data, | |
343 | u8 bank_addr, u8 sensor_addr, u8 *buf, int count) | |
344 | { | |
345 | int i; | |
346 | ||
347 | /* Send the address */ | |
348 | i = abituguru_send_address(data, bank_addr, sensor_addr, | |
349 | ABIT_UGURU_MAX_RETRIES); | |
350 | if (i) | |
351 | return i; | |
352 | ||
353 | /* And write the data */ | |
354 | for (i = 0; i < count; i++) { | |
355 | if (abituguru_wait(data, ABIT_UGURU_STATUS_WRITE)) { | |
356 | ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for " | |
357 | "write state (bank: %d, sensor: %d)\n", | |
358 | (int)bank_addr, (int)sensor_addr); | |
359 | break; | |
360 | } | |
361 | outb(buf[i], data->addr + ABIT_UGURU_CMD); | |
362 | } | |
363 | ||
364 | /* Now we need to wait till the chip is ready to be read again, | |
365 | don't ask why */ | |
366 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) { | |
367 | ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for read state " | |
368 | "after write (bank: %d, sensor: %d)\n", (int)bank_addr, | |
369 | (int)sensor_addr); | |
370 | return -EIO; | |
371 | } | |
372 | ||
373 | /* Cmd port MUST be read now and should contain 0xAC */ | |
374 | if (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) { | |
375 | ABIT_UGURU_DEBUG(1, "CMD reg does not hold 0xAC after write " | |
376 | "(bank: %d, sensor: %d)\n", (int)bank_addr, | |
377 | (int)sensor_addr); | |
378 | return -EIO; | |
379 | } | |
380 | ||
381 | /* Last put the chip back in ready state */ | |
382 | abituguru_ready(data); | |
383 | ||
384 | return i; | |
385 | } | |
386 | ||
387 | /* Detect sensor type. Temp and Volt sensors are enabled with | |
388 | different masks and will ignore enable masks not meant for them. | |
389 | This enables us to test what kind of sensor we're dealing with. | |
390 | By setting the alarm thresholds so that we will always get an | |
391 | alarm for sensor type X and then enabling the sensor as sensor type | |
392 | X, if we then get an alarm it is a sensor of type X. */ | |
393 | static int __devinit | |
394 | abituguru_detect_bank1_sensor_type(struct abituguru_data *data, | |
395 | u8 sensor_addr) | |
396 | { | |
397 | u8 val, buf[3]; | |
398 | int ret = ABIT_UGURU_NC; | |
399 | ||
400 | /* First read the sensor and the current settings */ | |
401 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, sensor_addr, &val, | |
402 | 1, ABIT_UGURU_MAX_RETRIES) != 1) | |
a2392e0b | 403 | return -ENODEV; |
f2b84bbc HG |
404 | |
405 | /* Test val is sane / usable for sensor type detection. */ | |
406 | if ((val < 10u) || (val > 240u)) { | |
407 | printk(KERN_WARNING ABIT_UGURU_NAME | |
408 | ": bank1-sensor: %d reading (%d) too close to limits, " | |
409 | "unable to determine sensor type, skipping sensor\n", | |
410 | (int)sensor_addr, (int)val); | |
411 | /* assume no sensor is there for sensors for which we can't | |
412 | determine the sensor type because their reading is too close | |
413 | to their limits, this usually means no sensor is there. */ | |
414 | return ABIT_UGURU_NC; | |
415 | } | |
416 | ||
417 | ABIT_UGURU_DEBUG(2, "testing bank1 sensor %d\n", (int)sensor_addr); | |
418 | /* Volt sensor test, enable volt low alarm, set min value ridicously | |
419 | high. If its a volt sensor this should always give us an alarm. */ | |
420 | buf[0] = ABIT_UGURU_VOLT_LOW_ALARM_ENABLE; | |
421 | buf[1] = 245; | |
422 | buf[2] = 250; | |
423 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, | |
424 | buf, 3) != 3) | |
a2392e0b | 425 | return -ENODEV; |
f2b84bbc HG |
426 | /* Now we need 20 ms to give the uguru time to read the sensors |
427 | and raise a voltage alarm */ | |
428 | set_current_state(TASK_UNINTERRUPTIBLE); | |
429 | schedule_timeout(HZ/50); | |
430 | /* Check for alarm and check the alarm is a volt low alarm. */ | |
431 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, | |
432 | ABIT_UGURU_MAX_RETRIES) != 3) | |
a2392e0b | 433 | return -ENODEV; |
f2b84bbc HG |
434 | if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { |
435 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, | |
436 | sensor_addr, buf, 3, | |
437 | ABIT_UGURU_MAX_RETRIES) != 3) | |
a2392e0b | 438 | return -ENODEV; |
f2b84bbc HG |
439 | if (buf[0] & ABIT_UGURU_VOLT_LOW_ALARM_FLAG) { |
440 | /* Restore original settings */ | |
441 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, | |
442 | sensor_addr, | |
443 | data->bank1_settings[sensor_addr], | |
444 | 3) != 3) | |
a2392e0b | 445 | return -ENODEV; |
f2b84bbc HG |
446 | ABIT_UGURU_DEBUG(2, " found volt sensor\n"); |
447 | return ABIT_UGURU_IN_SENSOR; | |
448 | } else | |
449 | ABIT_UGURU_DEBUG(2, " alarm raised during volt " | |
450 | "sensor test, but volt low flag not set\n"); | |
451 | } else | |
452 | ABIT_UGURU_DEBUG(2, " alarm not raised during volt sensor " | |
453 | "test\n"); | |
454 | ||
455 | /* Temp sensor test, enable sensor as a temp sensor, set beep value | |
456 | ridicously low (but not too low, otherwise uguru ignores it). | |
457 | If its a temp sensor this should always give us an alarm. */ | |
458 | buf[0] = ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE; | |
459 | buf[1] = 5; | |
460 | buf[2] = 10; | |
461 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, | |
462 | buf, 3) != 3) | |
a2392e0b | 463 | return -ENODEV; |
f2b84bbc HG |
464 | /* Now we need 50 ms to give the uguru time to read the sensors |
465 | and raise a temp alarm */ | |
466 | set_current_state(TASK_UNINTERRUPTIBLE); | |
467 | schedule_timeout(HZ/20); | |
468 | /* Check for alarm and check the alarm is a temp high alarm. */ | |
469 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, | |
470 | ABIT_UGURU_MAX_RETRIES) != 3) | |
a2392e0b | 471 | return -ENODEV; |
f2b84bbc HG |
472 | if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { |
473 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, | |
474 | sensor_addr, buf, 3, | |
475 | ABIT_UGURU_MAX_RETRIES) != 3) | |
a2392e0b | 476 | return -ENODEV; |
f2b84bbc HG |
477 | if (buf[0] & ABIT_UGURU_TEMP_HIGH_ALARM_FLAG) { |
478 | ret = ABIT_UGURU_TEMP_SENSOR; | |
479 | ABIT_UGURU_DEBUG(2, " found temp sensor\n"); | |
480 | } else | |
481 | ABIT_UGURU_DEBUG(2, " alarm raised during temp " | |
482 | "sensor test, but temp high flag not set\n"); | |
483 | } else | |
484 | ABIT_UGURU_DEBUG(2, " alarm not raised during temp sensor " | |
485 | "test\n"); | |
486 | ||
487 | /* Restore original settings */ | |
488 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, | |
489 | data->bank1_settings[sensor_addr], 3) != 3) | |
a2392e0b | 490 | return -ENODEV; |
f2b84bbc HG |
491 | |
492 | return ret; | |
493 | } | |
494 | ||
495 | /* These functions try to find out how many sensors there are in bank2 and how | |
496 | many pwms there are. The purpose of this is to make sure that we don't give | |
497 | the user the possibility to change settings for non-existent sensors / pwm. | |
498 | The uGuru will happily read / write whatever memory happens to be after the | |
499 | memory storing the PWM settings when reading/writing to a PWM which is not | |
500 | there. Notice even if we detect a PWM which doesn't exist we normally won't | |
501 | write to it, unless the user tries to change the settings. | |
502 | ||
503 | Although the uGuru allows reading (settings) from non existing bank2 | |
504 | sensors, my version of the uGuru does seem to stop writing to them, the | |
505 | write function above aborts in this case with: | |
506 | "CMD reg does not hold 0xAC after write" | |
507 | ||
508 | Notice these 2 tests are non destructive iow read-only tests, otherwise | |
509 | they would defeat their purpose. Although for the bank2_sensors detection a | |
510 | read/write test would be feasible because of the reaction above, I've | |
511 | however opted to stay on the safe side. */ | |
512 | static void __devinit | |
513 | abituguru_detect_no_bank2_sensors(struct abituguru_data *data) | |
514 | { | |
515 | int i; | |
516 | ||
517 | if (fan_sensors) { | |
518 | data->bank2_sensors = fan_sensors; | |
519 | ABIT_UGURU_DEBUG(2, "assuming %d fan sensors because of " | |
520 | "\"fan_sensors\" module param\n", | |
521 | (int)data->bank2_sensors); | |
522 | return; | |
523 | } | |
524 | ||
525 | ABIT_UGURU_DEBUG(2, "detecting number of fan sensors\n"); | |
526 | for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) { | |
527 | /* 0x89 are the known used bits: | |
528 | -0x80 enable shutdown | |
529 | -0x08 enable beep | |
530 | -0x01 enable alarm | |
531 | All other bits should be 0, but on some motherboards | |
b7c06604 HG |
532 | 0x40 (bit 6) is also high for some of the fans?? */ |
533 | if (data->bank2_settings[i][0] & ~0xC9) { | |
f2b84bbc HG |
534 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " |
535 | "to be a fan sensor: settings[0] = %02X\n", | |
536 | i, (unsigned int)data->bank2_settings[i][0]); | |
537 | break; | |
538 | } | |
539 | ||
540 | /* check if the threshold is within the allowed range */ | |
541 | if (data->bank2_settings[i][1] < | |
542 | abituguru_bank2_min_threshold) { | |
543 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " | |
544 | "to be a fan sensor: the threshold (%d) is " | |
545 | "below the minimum (%d)\n", i, | |
546 | (int)data->bank2_settings[i][1], | |
547 | (int)abituguru_bank2_min_threshold); | |
548 | break; | |
549 | } | |
550 | if (data->bank2_settings[i][1] > | |
551 | abituguru_bank2_max_threshold) { | |
552 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " | |
553 | "to be a fan sensor: the threshold (%d) is " | |
554 | "above the maximum (%d)\n", i, | |
555 | (int)data->bank2_settings[i][1], | |
556 | (int)abituguru_bank2_max_threshold); | |
557 | break; | |
558 | } | |
559 | } | |
560 | ||
561 | data->bank2_sensors = i; | |
562 | ABIT_UGURU_DEBUG(2, " found: %d fan sensors\n", | |
563 | (int)data->bank2_sensors); | |
564 | } | |
565 | ||
566 | static void __devinit | |
567 | abituguru_detect_no_pwms(struct abituguru_data *data) | |
568 | { | |
569 | int i, j; | |
570 | ||
571 | if (pwms) { | |
572 | data->pwms = pwms; | |
573 | ABIT_UGURU_DEBUG(2, "assuming %d PWM outputs because of " | |
574 | "\"pwms\" module param\n", (int)data->pwms); | |
575 | return; | |
576 | } | |
577 | ||
578 | ABIT_UGURU_DEBUG(2, "detecting number of PWM outputs\n"); | |
579 | for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) { | |
580 | /* 0x80 is the enable bit and the low | |
581 | nibble is which temp sensor to use, | |
582 | the other bits should be 0 */ | |
583 | if (data->pwm_settings[i][0] & ~0x8F) { | |
584 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
585 | "to be a pwm channel: settings[0] = %02X\n", | |
586 | i, (unsigned int)data->pwm_settings[i][0]); | |
587 | break; | |
588 | } | |
589 | ||
590 | /* the low nibble must correspond to one of the temp sensors | |
591 | we've found */ | |
592 | for (j = 0; j < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; | |
593 | j++) { | |
594 | if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][j] == | |
595 | (data->pwm_settings[i][0] & 0x0F)) | |
596 | break; | |
597 | } | |
598 | if (j == data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) { | |
599 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
600 | "to be a pwm channel: %d is not a valid temp " | |
601 | "sensor address\n", i, | |
602 | data->pwm_settings[i][0] & 0x0F); | |
603 | break; | |
604 | } | |
605 | ||
606 | /* check if all other settings are within the allowed range */ | |
607 | for (j = 1; j < 5; j++) { | |
608 | u8 min; | |
609 | /* special case pwm1 min pwm% */ | |
610 | if ((i == 0) && ((j == 1) || (j == 2))) | |
611 | min = 77; | |
612 | else | |
613 | min = abituguru_pwm_min[j]; | |
614 | if (data->pwm_settings[i][j] < min) { | |
615 | ABIT_UGURU_DEBUG(2, " pwm channel %d does " | |
616 | "not seem to be a pwm channel: " | |
617 | "setting %d (%d) is below the minimum " | |
618 | "value (%d)\n", i, j, | |
619 | (int)data->pwm_settings[i][j], | |
620 | (int)min); | |
621 | goto abituguru_detect_no_pwms_exit; | |
622 | } | |
623 | if (data->pwm_settings[i][j] > abituguru_pwm_max[j]) { | |
624 | ABIT_UGURU_DEBUG(2, " pwm channel %d does " | |
625 | "not seem to be a pwm channel: " | |
626 | "setting %d (%d) is above the maximum " | |
627 | "value (%d)\n", i, j, | |
628 | (int)data->pwm_settings[i][j], | |
629 | (int)abituguru_pwm_max[j]); | |
630 | goto abituguru_detect_no_pwms_exit; | |
631 | } | |
632 | } | |
633 | ||
634 | /* check that min temp < max temp and min pwm < max pwm */ | |
635 | if (data->pwm_settings[i][1] >= data->pwm_settings[i][2]) { | |
636 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
637 | "to be a pwm channel: min pwm (%d) >= " | |
638 | "max pwm (%d)\n", i, | |
639 | (int)data->pwm_settings[i][1], | |
640 | (int)data->pwm_settings[i][2]); | |
641 | break; | |
642 | } | |
643 | if (data->pwm_settings[i][3] >= data->pwm_settings[i][4]) { | |
644 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
645 | "to be a pwm channel: min temp (%d) >= " | |
646 | "max temp (%d)\n", i, | |
647 | (int)data->pwm_settings[i][3], | |
648 | (int)data->pwm_settings[i][4]); | |
649 | break; | |
650 | } | |
651 | } | |
652 | ||
653 | abituguru_detect_no_pwms_exit: | |
654 | data->pwms = i; | |
655 | ABIT_UGURU_DEBUG(2, " found: %d PWM outputs\n", (int)data->pwms); | |
656 | } | |
657 | ||
658 | /* Following are the sysfs callback functions. These functions expect: | |
659 | sensor_device_attribute_2->index: sensor address/offset in the bank | |
660 | sensor_device_attribute_2->nr: register offset, bitmask or NA. */ | |
661 | static struct abituguru_data *abituguru_update_device(struct device *dev); | |
662 | ||
663 | static ssize_t show_bank1_value(struct device *dev, | |
664 | struct device_attribute *devattr, char *buf) | |
665 | { | |
666 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
667 | struct abituguru_data *data = abituguru_update_device(dev); | |
668 | if (!data) | |
669 | return -EIO; | |
670 | return sprintf(buf, "%d\n", (data->bank1_value[attr->index] * | |
671 | data->bank1_max_value[attr->index] + 128) / 255); | |
672 | } | |
673 | ||
674 | static ssize_t show_bank1_setting(struct device *dev, | |
675 | struct device_attribute *devattr, char *buf) | |
676 | { | |
677 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
678 | struct abituguru_data *data = dev_get_drvdata(dev); | |
679 | return sprintf(buf, "%d\n", | |
680 | (data->bank1_settings[attr->index][attr->nr] * | |
681 | data->bank1_max_value[attr->index] + 128) / 255); | |
682 | } | |
683 | ||
684 | static ssize_t show_bank2_value(struct device *dev, | |
685 | struct device_attribute *devattr, char *buf) | |
686 | { | |
687 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
688 | struct abituguru_data *data = abituguru_update_device(dev); | |
689 | if (!data) | |
690 | return -EIO; | |
691 | return sprintf(buf, "%d\n", (data->bank2_value[attr->index] * | |
692 | ABIT_UGURU_FAN_MAX + 128) / 255); | |
693 | } | |
694 | ||
695 | static ssize_t show_bank2_setting(struct device *dev, | |
696 | struct device_attribute *devattr, char *buf) | |
697 | { | |
698 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
699 | struct abituguru_data *data = dev_get_drvdata(dev); | |
700 | return sprintf(buf, "%d\n", | |
701 | (data->bank2_settings[attr->index][attr->nr] * | |
702 | ABIT_UGURU_FAN_MAX + 128) / 255); | |
703 | } | |
704 | ||
705 | static ssize_t store_bank1_setting(struct device *dev, struct device_attribute | |
706 | *devattr, const char *buf, size_t count) | |
707 | { | |
708 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
709 | struct abituguru_data *data = dev_get_drvdata(dev); | |
710 | u8 val = (simple_strtoul(buf, NULL, 10) * 255 + | |
711 | data->bank1_max_value[attr->index]/2) / | |
712 | data->bank1_max_value[attr->index]; | |
713 | ssize_t ret = count; | |
714 | ||
715 | mutex_lock(&data->update_lock); | |
716 | if (data->bank1_settings[attr->index][attr->nr] != val) { | |
717 | u8 orig_val = data->bank1_settings[attr->index][attr->nr]; | |
718 | data->bank1_settings[attr->index][attr->nr] = val; | |
719 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, | |
720 | attr->index, data->bank1_settings[attr->index], | |
721 | 3) <= attr->nr) { | |
722 | data->bank1_settings[attr->index][attr->nr] = orig_val; | |
723 | ret = -EIO; | |
724 | } | |
725 | } | |
726 | mutex_unlock(&data->update_lock); | |
727 | return ret; | |
728 | } | |
729 | ||
730 | static ssize_t store_bank2_setting(struct device *dev, struct device_attribute | |
731 | *devattr, const char *buf, size_t count) | |
732 | { | |
733 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
734 | struct abituguru_data *data = dev_get_drvdata(dev); | |
735 | u8 val = (simple_strtoul(buf, NULL, 10)*255 + ABIT_UGURU_FAN_MAX/2) / | |
736 | ABIT_UGURU_FAN_MAX; | |
737 | ssize_t ret = count; | |
738 | ||
739 | /* this check can be done before taking the lock */ | |
740 | if ((val < abituguru_bank2_min_threshold) || | |
741 | (val > abituguru_bank2_max_threshold)) | |
742 | return -EINVAL; | |
743 | ||
744 | mutex_lock(&data->update_lock); | |
745 | if (data->bank2_settings[attr->index][attr->nr] != val) { | |
746 | u8 orig_val = data->bank2_settings[attr->index][attr->nr]; | |
747 | data->bank2_settings[attr->index][attr->nr] = val; | |
748 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK2 + 2, | |
749 | attr->index, data->bank2_settings[attr->index], | |
750 | 2) <= attr->nr) { | |
751 | data->bank2_settings[attr->index][attr->nr] = orig_val; | |
752 | ret = -EIO; | |
753 | } | |
754 | } | |
755 | mutex_unlock(&data->update_lock); | |
756 | return ret; | |
757 | } | |
758 | ||
759 | static ssize_t show_bank1_alarm(struct device *dev, | |
760 | struct device_attribute *devattr, char *buf) | |
761 | { | |
762 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
763 | struct abituguru_data *data = abituguru_update_device(dev); | |
764 | if (!data) | |
765 | return -EIO; | |
766 | /* See if the alarm bit for this sensor is set, and if the | |
767 | alarm matches the type of alarm we're looking for (for volt | |
768 | it can be either low or high). The type is stored in a few | |
769 | readonly bits in the settings part of the relevant sensor. | |
770 | The bitmask of the type is passed to us in attr->nr. */ | |
771 | if ((data->alarms[attr->index / 8] & (0x01 << (attr->index % 8))) && | |
772 | (data->bank1_settings[attr->index][0] & attr->nr)) | |
773 | return sprintf(buf, "1\n"); | |
774 | else | |
775 | return sprintf(buf, "0\n"); | |
776 | } | |
777 | ||
778 | static ssize_t show_bank2_alarm(struct device *dev, | |
779 | struct device_attribute *devattr, char *buf) | |
780 | { | |
781 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
782 | struct abituguru_data *data = abituguru_update_device(dev); | |
783 | if (!data) | |
784 | return -EIO; | |
785 | if (data->alarms[2] & (0x01 << attr->index)) | |
786 | return sprintf(buf, "1\n"); | |
787 | else | |
788 | return sprintf(buf, "0\n"); | |
789 | } | |
790 | ||
791 | static ssize_t show_bank1_mask(struct device *dev, | |
792 | struct device_attribute *devattr, char *buf) | |
793 | { | |
794 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
795 | struct abituguru_data *data = dev_get_drvdata(dev); | |
796 | if (data->bank1_settings[attr->index][0] & attr->nr) | |
797 | return sprintf(buf, "1\n"); | |
798 | else | |
799 | return sprintf(buf, "0\n"); | |
800 | } | |
801 | ||
802 | static ssize_t show_bank2_mask(struct device *dev, | |
803 | struct device_attribute *devattr, char *buf) | |
804 | { | |
805 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
806 | struct abituguru_data *data = dev_get_drvdata(dev); | |
807 | if (data->bank2_settings[attr->index][0] & attr->nr) | |
808 | return sprintf(buf, "1\n"); | |
809 | else | |
810 | return sprintf(buf, "0\n"); | |
811 | } | |
812 | ||
813 | static ssize_t store_bank1_mask(struct device *dev, | |
814 | struct device_attribute *devattr, const char *buf, size_t count) | |
815 | { | |
816 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
817 | struct abituguru_data *data = dev_get_drvdata(dev); | |
818 | int mask = simple_strtoul(buf, NULL, 10); | |
819 | ssize_t ret = count; | |
820 | u8 orig_val; | |
821 | ||
822 | mutex_lock(&data->update_lock); | |
823 | orig_val = data->bank1_settings[attr->index][0]; | |
824 | ||
825 | if (mask) | |
826 | data->bank1_settings[attr->index][0] |= attr->nr; | |
827 | else | |
828 | data->bank1_settings[attr->index][0] &= ~attr->nr; | |
829 | ||
830 | if ((data->bank1_settings[attr->index][0] != orig_val) && | |
831 | (abituguru_write(data, | |
832 | ABIT_UGURU_SENSOR_BANK1 + 2, attr->index, | |
833 | data->bank1_settings[attr->index], 3) < 1)) { | |
834 | data->bank1_settings[attr->index][0] = orig_val; | |
835 | ret = -EIO; | |
836 | } | |
837 | mutex_unlock(&data->update_lock); | |
838 | return ret; | |
839 | } | |
840 | ||
841 | static ssize_t store_bank2_mask(struct device *dev, | |
842 | struct device_attribute *devattr, const char *buf, size_t count) | |
843 | { | |
844 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
845 | struct abituguru_data *data = dev_get_drvdata(dev); | |
846 | int mask = simple_strtoul(buf, NULL, 10); | |
847 | ssize_t ret = count; | |
848 | u8 orig_val; | |
849 | ||
850 | mutex_lock(&data->update_lock); | |
851 | orig_val = data->bank2_settings[attr->index][0]; | |
852 | ||
853 | if (mask) | |
854 | data->bank2_settings[attr->index][0] |= attr->nr; | |
855 | else | |
856 | data->bank2_settings[attr->index][0] &= ~attr->nr; | |
857 | ||
858 | if ((data->bank2_settings[attr->index][0] != orig_val) && | |
859 | (abituguru_write(data, | |
860 | ABIT_UGURU_SENSOR_BANK2 + 2, attr->index, | |
861 | data->bank2_settings[attr->index], 2) < 1)) { | |
862 | data->bank2_settings[attr->index][0] = orig_val; | |
863 | ret = -EIO; | |
864 | } | |
865 | mutex_unlock(&data->update_lock); | |
866 | return ret; | |
867 | } | |
868 | ||
869 | /* Fan PWM (speed control) */ | |
870 | static ssize_t show_pwm_setting(struct device *dev, | |
871 | struct device_attribute *devattr, char *buf) | |
872 | { | |
873 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
874 | struct abituguru_data *data = dev_get_drvdata(dev); | |
875 | return sprintf(buf, "%d\n", data->pwm_settings[attr->index][attr->nr] * | |
876 | abituguru_pwm_settings_multiplier[attr->nr]); | |
877 | } | |
878 | ||
879 | static ssize_t store_pwm_setting(struct device *dev, struct device_attribute | |
880 | *devattr, const char *buf, size_t count) | |
881 | { | |
882 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
883 | struct abituguru_data *data = dev_get_drvdata(dev); | |
884 | u8 min, val = (simple_strtoul(buf, NULL, 10) + | |
885 | abituguru_pwm_settings_multiplier[attr->nr]/2) / | |
886 | abituguru_pwm_settings_multiplier[attr->nr]; | |
887 | ssize_t ret = count; | |
888 | ||
889 | /* special case pwm1 min pwm% */ | |
890 | if ((attr->index == 0) && ((attr->nr == 1) || (attr->nr == 2))) | |
891 | min = 77; | |
892 | else | |
893 | min = abituguru_pwm_min[attr->nr]; | |
894 | ||
895 | /* this check can be done before taking the lock */ | |
896 | if ((val < min) || (val > abituguru_pwm_max[attr->nr])) | |
897 | return -EINVAL; | |
898 | ||
899 | mutex_lock(&data->update_lock); | |
900 | /* this check needs to be done after taking the lock */ | |
901 | if ((attr->nr & 1) && | |
902 | (val >= data->pwm_settings[attr->index][attr->nr + 1])) | |
903 | ret = -EINVAL; | |
904 | else if (!(attr->nr & 1) && | |
905 | (val <= data->pwm_settings[attr->index][attr->nr - 1])) | |
906 | ret = -EINVAL; | |
907 | else if (data->pwm_settings[attr->index][attr->nr] != val) { | |
908 | u8 orig_val = data->pwm_settings[attr->index][attr->nr]; | |
909 | data->pwm_settings[attr->index][attr->nr] = val; | |
910 | if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, | |
911 | attr->index, data->pwm_settings[attr->index], | |
912 | 5) <= attr->nr) { | |
913 | data->pwm_settings[attr->index][attr->nr] = | |
914 | orig_val; | |
915 | ret = -EIO; | |
916 | } | |
917 | } | |
918 | mutex_unlock(&data->update_lock); | |
919 | return ret; | |
920 | } | |
921 | ||
922 | static ssize_t show_pwm_sensor(struct device *dev, | |
923 | struct device_attribute *devattr, char *buf) | |
924 | { | |
925 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
926 | struct abituguru_data *data = dev_get_drvdata(dev); | |
927 | int i; | |
928 | /* We need to walk to the temp sensor addresses to find what | |
929 | the userspace id of the configured temp sensor is. */ | |
930 | for (i = 0; i < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; i++) | |
931 | if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][i] == | |
932 | (data->pwm_settings[attr->index][0] & 0x0F)) | |
933 | return sprintf(buf, "%d\n", i+1); | |
934 | ||
935 | return -ENXIO; | |
936 | } | |
937 | ||
938 | static ssize_t store_pwm_sensor(struct device *dev, struct device_attribute | |
939 | *devattr, const char *buf, size_t count) | |
940 | { | |
941 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
942 | struct abituguru_data *data = dev_get_drvdata(dev); | |
943 | unsigned long val = simple_strtoul(buf, NULL, 10) - 1; | |
944 | ssize_t ret = count; | |
945 | ||
946 | mutex_lock(&data->update_lock); | |
947 | if (val < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) { | |
948 | u8 orig_val = data->pwm_settings[attr->index][0]; | |
949 | u8 address = data->bank1_address[ABIT_UGURU_TEMP_SENSOR][val]; | |
950 | data->pwm_settings[attr->index][0] &= 0xF0; | |
951 | data->pwm_settings[attr->index][0] |= address; | |
952 | if (data->pwm_settings[attr->index][0] != orig_val) { | |
953 | if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, | |
954 | attr->index, | |
955 | data->pwm_settings[attr->index], | |
956 | 5) < 1) { | |
957 | data->pwm_settings[attr->index][0] = orig_val; | |
958 | ret = -EIO; | |
959 | } | |
960 | } | |
961 | } | |
962 | else | |
963 | ret = -EINVAL; | |
964 | mutex_unlock(&data->update_lock); | |
965 | return ret; | |
966 | } | |
967 | ||
968 | static ssize_t show_pwm_enable(struct device *dev, | |
969 | struct device_attribute *devattr, char *buf) | |
970 | { | |
971 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
972 | struct abituguru_data *data = dev_get_drvdata(dev); | |
973 | int res = 0; | |
974 | if (data->pwm_settings[attr->index][0] & ABIT_UGURU_FAN_PWM_ENABLE) | |
975 | res = 2; | |
976 | return sprintf(buf, "%d\n", res); | |
977 | } | |
978 | ||
979 | static ssize_t store_pwm_enable(struct device *dev, struct device_attribute | |
980 | *devattr, const char *buf, size_t count) | |
981 | { | |
982 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
983 | struct abituguru_data *data = dev_get_drvdata(dev); | |
984 | u8 orig_val, user_val = simple_strtoul(buf, NULL, 10); | |
985 | ssize_t ret = count; | |
986 | ||
987 | mutex_lock(&data->update_lock); | |
988 | orig_val = data->pwm_settings[attr->index][0]; | |
989 | switch (user_val) { | |
990 | case 0: | |
991 | data->pwm_settings[attr->index][0] &= | |
992 | ~ABIT_UGURU_FAN_PWM_ENABLE; | |
993 | break; | |
994 | case 2: | |
995 | data->pwm_settings[attr->index][0] |= | |
996 | ABIT_UGURU_FAN_PWM_ENABLE; | |
997 | break; | |
998 | default: | |
999 | ret = -EINVAL; | |
1000 | } | |
1001 | if ((data->pwm_settings[attr->index][0] != orig_val) && | |
1002 | (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, | |
1003 | attr->index, data->pwm_settings[attr->index], | |
1004 | 5) < 1)) { | |
1005 | data->pwm_settings[attr->index][0] = orig_val; | |
1006 | ret = -EIO; | |
1007 | } | |
1008 | mutex_unlock(&data->update_lock); | |
1009 | return ret; | |
1010 | } | |
1011 | ||
1012 | static ssize_t show_name(struct device *dev, | |
1013 | struct device_attribute *devattr, char *buf) | |
1014 | { | |
1015 | return sprintf(buf, "%s\n", ABIT_UGURU_NAME); | |
1016 | } | |
1017 | ||
1018 | /* Sysfs attr templates, the real entries are generated automatically. */ | |
1019 | static const | |
1020 | struct sensor_device_attribute_2 abituguru_sysfs_bank1_templ[2][9] = { | |
1021 | { | |
1022 | SENSOR_ATTR_2(in%d_input, 0444, show_bank1_value, NULL, 0, 0), | |
1023 | SENSOR_ATTR_2(in%d_min, 0644, show_bank1_setting, | |
1024 | store_bank1_setting, 1, 0), | |
1025 | SENSOR_ATTR_2(in%d_min_alarm, 0444, show_bank1_alarm, NULL, | |
1026 | ABIT_UGURU_VOLT_LOW_ALARM_FLAG, 0), | |
1027 | SENSOR_ATTR_2(in%d_max, 0644, show_bank1_setting, | |
1028 | store_bank1_setting, 2, 0), | |
1029 | SENSOR_ATTR_2(in%d_max_alarm, 0444, show_bank1_alarm, NULL, | |
1030 | ABIT_UGURU_VOLT_HIGH_ALARM_FLAG, 0), | |
1031 | SENSOR_ATTR_2(in%d_beep, 0644, show_bank1_mask, | |
1032 | store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0), | |
1033 | SENSOR_ATTR_2(in%d_shutdown, 0644, show_bank1_mask, | |
1034 | store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), | |
1035 | SENSOR_ATTR_2(in%d_min_alarm_enable, 0644, show_bank1_mask, | |
1036 | store_bank1_mask, ABIT_UGURU_VOLT_LOW_ALARM_ENABLE, 0), | |
1037 | SENSOR_ATTR_2(in%d_max_alarm_enable, 0644, show_bank1_mask, | |
1038 | store_bank1_mask, ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE, 0), | |
1039 | }, { | |
1040 | SENSOR_ATTR_2(temp%d_input, 0444, show_bank1_value, NULL, 0, 0), | |
1041 | SENSOR_ATTR_2(temp%d_alarm, 0444, show_bank1_alarm, NULL, | |
1042 | ABIT_UGURU_TEMP_HIGH_ALARM_FLAG, 0), | |
1043 | SENSOR_ATTR_2(temp%d_max, 0644, show_bank1_setting, | |
1044 | store_bank1_setting, 1, 0), | |
1045 | SENSOR_ATTR_2(temp%d_crit, 0644, show_bank1_setting, | |
1046 | store_bank1_setting, 2, 0), | |
1047 | SENSOR_ATTR_2(temp%d_beep, 0644, show_bank1_mask, | |
1048 | store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0), | |
1049 | SENSOR_ATTR_2(temp%d_shutdown, 0644, show_bank1_mask, | |
1050 | store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), | |
1051 | SENSOR_ATTR_2(temp%d_alarm_enable, 0644, show_bank1_mask, | |
1052 | store_bank1_mask, ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE, 0), | |
1053 | } | |
1054 | }; | |
1055 | ||
1056 | static const struct sensor_device_attribute_2 abituguru_sysfs_fan_templ[6] = { | |
1057 | SENSOR_ATTR_2(fan%d_input, 0444, show_bank2_value, NULL, 0, 0), | |
1058 | SENSOR_ATTR_2(fan%d_alarm, 0444, show_bank2_alarm, NULL, 0, 0), | |
1059 | SENSOR_ATTR_2(fan%d_min, 0644, show_bank2_setting, | |
1060 | store_bank2_setting, 1, 0), | |
1061 | SENSOR_ATTR_2(fan%d_beep, 0644, show_bank2_mask, | |
1062 | store_bank2_mask, ABIT_UGURU_BEEP_ENABLE, 0), | |
1063 | SENSOR_ATTR_2(fan%d_shutdown, 0644, show_bank2_mask, | |
1064 | store_bank2_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), | |
1065 | SENSOR_ATTR_2(fan%d_alarm_enable, 0644, show_bank2_mask, | |
1066 | store_bank2_mask, ABIT_UGURU_FAN_LOW_ALARM_ENABLE, 0), | |
1067 | }; | |
1068 | ||
1069 | static const struct sensor_device_attribute_2 abituguru_sysfs_pwm_templ[6] = { | |
1070 | SENSOR_ATTR_2(pwm%d_enable, 0644, show_pwm_enable, | |
1071 | store_pwm_enable, 0, 0), | |
1072 | SENSOR_ATTR_2(pwm%d_auto_channels_temp, 0644, show_pwm_sensor, | |
1073 | store_pwm_sensor, 0, 0), | |
1074 | SENSOR_ATTR_2(pwm%d_auto_point1_pwm, 0644, show_pwm_setting, | |
1075 | store_pwm_setting, 1, 0), | |
1076 | SENSOR_ATTR_2(pwm%d_auto_point2_pwm, 0644, show_pwm_setting, | |
1077 | store_pwm_setting, 2, 0), | |
1078 | SENSOR_ATTR_2(pwm%d_auto_point1_temp, 0644, show_pwm_setting, | |
1079 | store_pwm_setting, 3, 0), | |
1080 | SENSOR_ATTR_2(pwm%d_auto_point2_temp, 0644, show_pwm_setting, | |
1081 | store_pwm_setting, 4, 0), | |
1082 | }; | |
1083 | ||
a2392e0b | 1084 | static struct sensor_device_attribute_2 abituguru_sysfs_attr[] = { |
f2b84bbc HG |
1085 | SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0), |
1086 | }; | |
1087 | ||
1088 | static int __devinit abituguru_probe(struct platform_device *pdev) | |
1089 | { | |
1090 | struct abituguru_data *data; | |
a2392e0b | 1091 | int i, j, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV; |
f2b84bbc | 1092 | char *sysfs_filename; |
f2b84bbc HG |
1093 | |
1094 | /* El weirdo probe order, to keep the sysfs order identical to the | |
1095 | BIOS and window-appliction listing order. */ | |
a2392e0b HG |
1096 | const u8 probe_order[ABIT_UGURU_MAX_BANK1_SENSORS] = { |
1097 | 0x00, 0x01, 0x03, 0x04, 0x0A, 0x08, 0x0E, 0x02, | |
1098 | 0x09, 0x06, 0x05, 0x0B, 0x0F, 0x0D, 0x07, 0x0C }; | |
f2b84bbc HG |
1099 | |
1100 | if (!(data = kzalloc(sizeof(struct abituguru_data), GFP_KERNEL))) | |
1101 | return -ENOMEM; | |
1102 | ||
1103 | data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; | |
1104 | mutex_init(&data->update_lock); | |
1105 | platform_set_drvdata(pdev, data); | |
1106 | ||
1107 | /* See if the uGuru is ready */ | |
1108 | if (inb_p(data->addr + ABIT_UGURU_DATA) == ABIT_UGURU_STATUS_INPUT) | |
1109 | data->uguru_ready = 1; | |
1110 | ||
1111 | /* Completely read the uGuru this has 2 purposes: | |
1112 | - testread / see if one really is there. | |
1113 | - make an in memory copy of all the uguru settings for future use. */ | |
1114 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, | |
a2392e0b HG |
1115 | data->alarms, 3, ABIT_UGURU_MAX_RETRIES) != 3) |
1116 | goto abituguru_probe_error; | |
f2b84bbc | 1117 | |
a2392e0b | 1118 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { |
f2b84bbc HG |
1119 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, i, |
1120 | &data->bank1_value[i], 1, | |
a2392e0b HG |
1121 | ABIT_UGURU_MAX_RETRIES) != 1) |
1122 | goto abituguru_probe_error; | |
f2b84bbc HG |
1123 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1+1, i, |
1124 | data->bank1_settings[i], 3, | |
a2392e0b HG |
1125 | ABIT_UGURU_MAX_RETRIES) != 3) |
1126 | goto abituguru_probe_error; | |
f2b84bbc HG |
1127 | } |
1128 | /* Note: We don't know how many bank2 sensors / pwms there really are, | |
1129 | but in order to "detect" this we need to read the maximum amount | |
1130 | anyways. If we read sensors/pwms not there we'll just read crap | |
1131 | this can't hurt. We need the detection because we don't want | |
1132 | unwanted writes, which will hurt! */ | |
1133 | for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) { | |
1134 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2, i, | |
1135 | &data->bank2_value[i], 1, | |
a2392e0b HG |
1136 | ABIT_UGURU_MAX_RETRIES) != 1) |
1137 | goto abituguru_probe_error; | |
f2b84bbc HG |
1138 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2+1, i, |
1139 | data->bank2_settings[i], 2, | |
a2392e0b HG |
1140 | ABIT_UGURU_MAX_RETRIES) != 2) |
1141 | goto abituguru_probe_error; | |
f2b84bbc HG |
1142 | } |
1143 | for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) { | |
1144 | if (abituguru_read(data, ABIT_UGURU_FAN_PWM, i, | |
1145 | data->pwm_settings[i], 5, | |
a2392e0b HG |
1146 | ABIT_UGURU_MAX_RETRIES) != 5) |
1147 | goto abituguru_probe_error; | |
f2b84bbc HG |
1148 | } |
1149 | data->last_updated = jiffies; | |
1150 | ||
1151 | /* Detect sensor types and fill the sysfs attr for bank1 */ | |
a2392e0b HG |
1152 | sysfs_attr_i = 0; |
1153 | sysfs_filename = data->sysfs_names; | |
1154 | sysfs_names_free = ABITUGURU_SYSFS_NAMES_LENGTH; | |
1155 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { | |
f2b84bbc | 1156 | res = abituguru_detect_bank1_sensor_type(data, probe_order[i]); |
a2392e0b HG |
1157 | if (res < 0) |
1158 | goto abituguru_probe_error; | |
f2b84bbc HG |
1159 | if (res == ABIT_UGURU_NC) |
1160 | continue; | |
1161 | ||
a2392e0b | 1162 | /* res 1 (temp) sensors have 7 sysfs entries, 0 (in) 9 */ |
f2b84bbc | 1163 | for (j = 0; j < (res ? 7 : 9); j++) { |
a2392e0b HG |
1164 | used = snprintf(sysfs_filename, sysfs_names_free, |
1165 | abituguru_sysfs_bank1_templ[res][j].dev_attr. | |
1166 | attr.name, data->bank1_sensors[res] + res) | |
1167 | + 1; | |
f2b84bbc HG |
1168 | data->sysfs_attr[sysfs_attr_i] = |
1169 | abituguru_sysfs_bank1_templ[res][j]; | |
1170 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = | |
1171 | sysfs_filename; | |
f2b84bbc | 1172 | data->sysfs_attr[sysfs_attr_i].index = probe_order[i]; |
a2392e0b HG |
1173 | sysfs_filename += used; |
1174 | sysfs_names_free -= used; | |
f2b84bbc HG |
1175 | sysfs_attr_i++; |
1176 | } | |
1177 | data->bank1_max_value[probe_order[i]] = | |
1178 | abituguru_bank1_max_value[res]; | |
1179 | data->bank1_address[res][data->bank1_sensors[res]] = | |
1180 | probe_order[i]; | |
1181 | data->bank1_sensors[res]++; | |
1182 | } | |
1183 | /* Detect number of sensors and fill the sysfs attr for bank2 (fans) */ | |
1184 | abituguru_detect_no_bank2_sensors(data); | |
1185 | for (i = 0; i < data->bank2_sensors; i++) { | |
a2392e0b HG |
1186 | for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_fan_templ); j++) { |
1187 | used = snprintf(sysfs_filename, sysfs_names_free, | |
1188 | abituguru_sysfs_fan_templ[j].dev_attr.attr.name, | |
1189 | i + 1) + 1; | |
f2b84bbc HG |
1190 | data->sysfs_attr[sysfs_attr_i] = |
1191 | abituguru_sysfs_fan_templ[j]; | |
1192 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = | |
1193 | sysfs_filename; | |
f2b84bbc | 1194 | data->sysfs_attr[sysfs_attr_i].index = i; |
a2392e0b HG |
1195 | sysfs_filename += used; |
1196 | sysfs_names_free -= used; | |
f2b84bbc HG |
1197 | sysfs_attr_i++; |
1198 | } | |
1199 | } | |
1200 | /* Detect number of sensors and fill the sysfs attr for pwms */ | |
1201 | abituguru_detect_no_pwms(data); | |
1202 | for (i = 0; i < data->pwms; i++) { | |
a2392e0b HG |
1203 | for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_pwm_templ); j++) { |
1204 | used = snprintf(sysfs_filename, sysfs_names_free, | |
1205 | abituguru_sysfs_pwm_templ[j].dev_attr.attr.name, | |
1206 | i + 1) + 1; | |
f2b84bbc HG |
1207 | data->sysfs_attr[sysfs_attr_i] = |
1208 | abituguru_sysfs_pwm_templ[j]; | |
1209 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = | |
1210 | sysfs_filename; | |
f2b84bbc | 1211 | data->sysfs_attr[sysfs_attr_i].index = i; |
a2392e0b HG |
1212 | sysfs_filename += used; |
1213 | sysfs_names_free -= used; | |
f2b84bbc HG |
1214 | sysfs_attr_i++; |
1215 | } | |
1216 | } | |
a2392e0b HG |
1217 | /* Fail safe check, this should never happen! */ |
1218 | if (sysfs_names_free < 0) { | |
1219 | printk(KERN_ERR ABIT_UGURU_NAME ": Fatal error ran out of " | |
1220 | "space for sysfs attr names. This should never " | |
1221 | "happen please report to the abituguru maintainer " | |
1222 | "(see MAINTAINERS)\n"); | |
1223 | res = -ENAMETOOLONG; | |
1224 | goto abituguru_probe_error; | |
f2b84bbc HG |
1225 | } |
1226 | printk(KERN_INFO ABIT_UGURU_NAME ": found Abit uGuru\n"); | |
1227 | ||
1228 | /* Register sysfs hooks */ | |
1229 | data->class_dev = hwmon_device_register(&pdev->dev); | |
1230 | if (IS_ERR(data->class_dev)) { | |
a2392e0b HG |
1231 | res = PTR_ERR(data->class_dev); |
1232 | goto abituguru_probe_error; | |
f2b84bbc HG |
1233 | } |
1234 | for (i = 0; i < sysfs_attr_i; i++) | |
1235 | device_create_file(&pdev->dev, &data->sysfs_attr[i].dev_attr); | |
a2392e0b HG |
1236 | for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++) |
1237 | device_create_file(&pdev->dev, | |
1238 | &abituguru_sysfs_attr[i].dev_attr); | |
f2b84bbc HG |
1239 | |
1240 | return 0; | |
a2392e0b HG |
1241 | |
1242 | abituguru_probe_error: | |
1243 | kfree(data); | |
1244 | return res; | |
f2b84bbc HG |
1245 | } |
1246 | ||
1247 | static int __devexit abituguru_remove(struct platform_device *pdev) | |
1248 | { | |
1249 | struct abituguru_data *data = platform_get_drvdata(pdev); | |
1250 | ||
1251 | platform_set_drvdata(pdev, NULL); | |
1252 | hwmon_device_unregister(data->class_dev); | |
1253 | kfree(data); | |
1254 | ||
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | static struct abituguru_data *abituguru_update_device(struct device *dev) | |
1259 | { | |
1260 | int i, err; | |
1261 | struct abituguru_data *data = dev_get_drvdata(dev); | |
1262 | /* fake a complete successful read if no update necessary. */ | |
1263 | char success = 1; | |
1264 | ||
1265 | mutex_lock(&data->update_lock); | |
1266 | if (time_after(jiffies, data->last_updated + HZ)) { | |
1267 | success = 0; | |
1268 | if ((err = abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, | |
1269 | data->alarms, 3, 0)) != 3) | |
1270 | goto LEAVE_UPDATE; | |
a2392e0b | 1271 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { |
f2b84bbc HG |
1272 | if ((err = abituguru_read(data, |
1273 | ABIT_UGURU_SENSOR_BANK1, i, | |
1274 | &data->bank1_value[i], 1, 0)) != 1) | |
1275 | goto LEAVE_UPDATE; | |
1276 | if ((err = abituguru_read(data, | |
1277 | ABIT_UGURU_SENSOR_BANK1 + 1, i, | |
1278 | data->bank1_settings[i], 3, 0)) != 3) | |
1279 | goto LEAVE_UPDATE; | |
1280 | } | |
1281 | for (i = 0; i < data->bank2_sensors; i++) | |
1282 | if ((err = abituguru_read(data, | |
1283 | ABIT_UGURU_SENSOR_BANK2, i, | |
1284 | &data->bank2_value[i], 1, 0)) != 1) | |
1285 | goto LEAVE_UPDATE; | |
1286 | /* success! */ | |
1287 | success = 1; | |
1288 | data->update_timeouts = 0; | |
1289 | LEAVE_UPDATE: | |
1290 | /* handle timeout condition */ | |
1291 | if (err == -EBUSY) { | |
1292 | /* No overflow please */ | |
1293 | if (data->update_timeouts < 255u) | |
1294 | data->update_timeouts++; | |
1295 | if (data->update_timeouts <= ABIT_UGURU_MAX_TIMEOUTS) { | |
1296 | ABIT_UGURU_DEBUG(3, "timeout exceeded, will " | |
1297 | "try again next update\n"); | |
1298 | /* Just a timeout, fake a successful read */ | |
1299 | success = 1; | |
1300 | } else | |
1301 | ABIT_UGURU_DEBUG(1, "timeout exceeded %d " | |
1302 | "times waiting for more input state\n", | |
1303 | (int)data->update_timeouts); | |
1304 | } | |
1305 | /* On success set last_updated */ | |
1306 | if (success) | |
1307 | data->last_updated = jiffies; | |
1308 | } | |
1309 | mutex_unlock(&data->update_lock); | |
1310 | ||
1311 | if (success) | |
1312 | return data; | |
1313 | else | |
1314 | return NULL; | |
1315 | } | |
1316 | ||
1317 | static struct platform_driver abituguru_driver = { | |
1318 | .driver = { | |
1319 | .owner = THIS_MODULE, | |
1320 | .name = ABIT_UGURU_NAME, | |
1321 | }, | |
1322 | .probe = abituguru_probe, | |
1323 | .remove = __devexit_p(abituguru_remove), | |
1324 | }; | |
1325 | ||
1326 | static int __init abituguru_detect(void) | |
1327 | { | |
1328 | /* See if there is an uguru there. After a reboot uGuru will hold 0x00 | |
1329 | at DATA and 0xAC, when this driver has already been loaded once | |
1330 | DATA will hold 0x08. For most uGuru's CMD will hold 0xAC in either | |
1331 | scenario but some will hold 0x00. | |
1332 | Some uGuru's initally hold 0x09 at DATA and will only hold 0x08 | |
1333 | after reading CMD first, so CMD must be read first! */ | |
1334 | u8 cmd_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_CMD); | |
1335 | u8 data_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_DATA); | |
1336 | if (((data_val == 0x00) || (data_val == 0x08)) && | |
1337 | ((cmd_val == 0x00) || (cmd_val == 0xAC))) | |
1338 | return ABIT_UGURU_BASE; | |
1339 | ||
1340 | ABIT_UGURU_DEBUG(2, "no Abit uGuru found, data = 0x%02X, cmd = " | |
1341 | "0x%02X\n", (unsigned int)data_val, (unsigned int)cmd_val); | |
1342 | ||
1343 | if (force) { | |
1344 | printk(KERN_INFO ABIT_UGURU_NAME ": Assuming Abit uGuru is " | |
1345 | "present because of \"force\" parameter\n"); | |
1346 | return ABIT_UGURU_BASE; | |
1347 | } | |
1348 | ||
1349 | /* No uGuru found */ | |
1350 | return -ENODEV; | |
1351 | } | |
1352 | ||
1353 | static struct platform_device *abituguru_pdev; | |
1354 | ||
1355 | static int __init abituguru_init(void) | |
1356 | { | |
1357 | int address, err; | |
1358 | struct resource res = { .flags = IORESOURCE_IO }; | |
1359 | ||
1360 | address = abituguru_detect(); | |
1361 | if (address < 0) | |
1362 | return address; | |
1363 | ||
1364 | err = platform_driver_register(&abituguru_driver); | |
1365 | if (err) | |
1366 | goto exit; | |
1367 | ||
1368 | abituguru_pdev = platform_device_alloc(ABIT_UGURU_NAME, address); | |
1369 | if (!abituguru_pdev) { | |
1370 | printk(KERN_ERR ABIT_UGURU_NAME | |
1371 | ": Device allocation failed\n"); | |
1372 | err = -ENOMEM; | |
1373 | goto exit_driver_unregister; | |
1374 | } | |
1375 | ||
1376 | res.start = address; | |
1377 | res.end = address + ABIT_UGURU_REGION_LENGTH - 1; | |
1378 | res.name = ABIT_UGURU_NAME; | |
1379 | ||
1380 | err = platform_device_add_resources(abituguru_pdev, &res, 1); | |
1381 | if (err) { | |
1382 | printk(KERN_ERR ABIT_UGURU_NAME | |
1383 | ": Device resource addition failed (%d)\n", err); | |
1384 | goto exit_device_put; | |
1385 | } | |
1386 | ||
1387 | err = platform_device_add(abituguru_pdev); | |
1388 | if (err) { | |
1389 | printk(KERN_ERR ABIT_UGURU_NAME | |
1390 | ": Device addition failed (%d)\n", err); | |
1391 | goto exit_device_put; | |
1392 | } | |
1393 | ||
1394 | return 0; | |
1395 | ||
1396 | exit_device_put: | |
1397 | platform_device_put(abituguru_pdev); | |
1398 | exit_driver_unregister: | |
1399 | platform_driver_unregister(&abituguru_driver); | |
1400 | exit: | |
1401 | return err; | |
1402 | } | |
1403 | ||
1404 | static void __exit abituguru_exit(void) | |
1405 | { | |
1406 | platform_device_unregister(abituguru_pdev); | |
1407 | platform_driver_unregister(&abituguru_driver); | |
1408 | } | |
1409 | ||
1410 | MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>"); | |
1411 | MODULE_DESCRIPTION("Abit uGuru Sensor device"); | |
1412 | MODULE_LICENSE("GPL"); | |
1413 | ||
1414 | module_init(abituguru_init); | |
1415 | module_exit(abituguru_exit); |