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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> | |
faf9b616 | 29 | #include <linux/delay.h> |
f2b84bbc HG |
30 | #include <linux/platform_device.h> |
31 | #include <linux/hwmon.h> | |
32 | #include <linux/hwmon-sysfs.h> | |
33 | #include <asm/io.h> | |
34 | ||
35 | /* Banks */ | |
36 | #define ABIT_UGURU_ALARM_BANK 0x20 /* 1x 3 bytes */ | |
37 | #define ABIT_UGURU_SENSOR_BANK1 0x21 /* 16x volt and temp */ | |
38 | #define ABIT_UGURU_FAN_PWM 0x24 /* 3x 5 bytes */ | |
39 | #define ABIT_UGURU_SENSOR_BANK2 0x26 /* fans */ | |
a2392e0b HG |
40 | /* max nr of sensors in bank1, a bank1 sensor can be in, temp or nc */ |
41 | #define ABIT_UGURU_MAX_BANK1_SENSORS 16 | |
42 | /* Warning if you increase one of the 2 MAX defines below to 10 or higher you | |
43 | should adjust the belonging _NAMES_LENGTH macro for the 2 digit number! */ | |
f2b84bbc HG |
44 | /* max nr of sensors in bank2, currently mb's with max 6 fans are known */ |
45 | #define ABIT_UGURU_MAX_BANK2_SENSORS 6 | |
46 | /* max nr of pwm outputs, currently mb's with max 5 pwm outputs are known */ | |
47 | #define ABIT_UGURU_MAX_PWMS 5 | |
48 | /* uGuru sensor bank 1 flags */ /* Alarm if: */ | |
49 | #define ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE 0x01 /* temp over warn */ | |
50 | #define ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE 0x02 /* volt over max */ | |
51 | #define ABIT_UGURU_VOLT_LOW_ALARM_ENABLE 0x04 /* volt under min */ | |
52 | #define ABIT_UGURU_TEMP_HIGH_ALARM_FLAG 0x10 /* temp is over warn */ | |
53 | #define ABIT_UGURU_VOLT_HIGH_ALARM_FLAG 0x20 /* volt is over max */ | |
54 | #define ABIT_UGURU_VOLT_LOW_ALARM_FLAG 0x40 /* volt is under min */ | |
55 | /* uGuru sensor bank 2 flags */ /* Alarm if: */ | |
56 | #define ABIT_UGURU_FAN_LOW_ALARM_ENABLE 0x01 /* fan under min */ | |
57 | /* uGuru sensor bank common flags */ | |
58 | #define ABIT_UGURU_BEEP_ENABLE 0x08 /* beep if alarm */ | |
59 | #define ABIT_UGURU_SHUTDOWN_ENABLE 0x80 /* shutdown if alarm */ | |
60 | /* uGuru fan PWM (speed control) flags */ | |
61 | #define ABIT_UGURU_FAN_PWM_ENABLE 0x80 /* enable speed control */ | |
62 | /* Values used for conversion */ | |
63 | #define ABIT_UGURU_FAN_MAX 15300 /* RPM */ | |
64 | /* Bank1 sensor types */ | |
65 | #define ABIT_UGURU_IN_SENSOR 0 | |
66 | #define ABIT_UGURU_TEMP_SENSOR 1 | |
67 | #define ABIT_UGURU_NC 2 | |
faf9b616 HG |
68 | /* In many cases we need to wait for the uGuru to reach a certain status, most |
69 | of the time it will reach this status within 30 - 90 ISA reads, and thus we | |
70 | can best busy wait. This define gives the total amount of reads to try. */ | |
71 | #define ABIT_UGURU_WAIT_TIMEOUT 125 | |
72 | /* However sometimes older versions of the uGuru seem to be distracted and they | |
73 | do not respond for a long time. To handle this we sleep before each of the | |
74 | last ABIT_UGURU_WAIT_TIMEOUT_SLEEP tries. */ | |
75 | #define ABIT_UGURU_WAIT_TIMEOUT_SLEEP 5 | |
f2b84bbc | 76 | /* Normally all expected status in abituguru_ready, are reported after the |
faf9b616 HG |
77 | first read, but sometimes not and we need to poll. */ |
78 | #define ABIT_UGURU_READY_TIMEOUT 5 | |
f2b84bbc HG |
79 | /* Maximum 3 retries on timedout reads/writes, delay 200 ms before retrying */ |
80 | #define ABIT_UGURU_MAX_RETRIES 3 | |
81 | #define ABIT_UGURU_RETRY_DELAY (HZ/5) | |
a2392e0b | 82 | /* Maximum 2 timeouts in abituguru_update_device, iow 3 in a row is an error */ |
f2b84bbc | 83 | #define ABIT_UGURU_MAX_TIMEOUTS 2 |
a2392e0b HG |
84 | /* utility macros */ |
85 | #define ABIT_UGURU_NAME "abituguru" | |
86 | #define ABIT_UGURU_DEBUG(level, format, arg...) \ | |
87 | if (level <= verbose) \ | |
88 | printk(KERN_DEBUG ABIT_UGURU_NAME ": " format , ## arg) | |
89 | /* Macros to help calculate the sysfs_names array length */ | |
90 | /* sum of strlen of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0, | |
91 | in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0 */ | |
92 | #define ABITUGURU_IN_NAMES_LENGTH (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14) | |
93 | /* sum of strlen of: temp??_input\0, temp??_max\0, temp??_crit\0, | |
94 | temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0 */ | |
95 | #define ABITUGURU_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16) | |
96 | /* sum of strlen of: fan?_input\0, fan?_min\0, fan?_alarm\0, | |
97 | fan?_alarm_enable\0, fan?_beep\0, fan?_shutdown\0 */ | |
98 | #define ABITUGURU_FAN_NAMES_LENGTH (11 + 9 + 11 + 18 + 10 + 14) | |
99 | /* sum of strlen of: pwm?_enable\0, pwm?_auto_channels_temp\0, | |
100 | pwm?_auto_point{1,2}_pwm\0, pwm?_auto_point{1,2}_temp\0 */ | |
101 | #define ABITUGURU_PWM_NAMES_LENGTH (12 + 24 + 2 * 21 + 2 * 22) | |
102 | /* IN_NAMES_LENGTH > TEMP_NAMES_LENGTH so assume all bank1 sensors are in */ | |
103 | #define ABITUGURU_SYSFS_NAMES_LENGTH ( \ | |
104 | ABIT_UGURU_MAX_BANK1_SENSORS * ABITUGURU_IN_NAMES_LENGTH + \ | |
105 | ABIT_UGURU_MAX_BANK2_SENSORS * ABITUGURU_FAN_NAMES_LENGTH + \ | |
106 | ABIT_UGURU_MAX_PWMS * ABITUGURU_PWM_NAMES_LENGTH) | |
107 | ||
108 | /* All the macros below are named identical to the oguru and oguru2 programs | |
f2b84bbc HG |
109 | reverse engineered by Olle Sandberg, hence the names might not be 100% |
110 | logical. I could come up with better names, but I prefer keeping the names | |
111 | identical so that this driver can be compared with his work more easily. */ | |
112 | /* Two i/o-ports are used by uGuru */ | |
113 | #define ABIT_UGURU_BASE 0x00E0 | |
114 | /* Used to tell uGuru what to read and to read the actual data */ | |
115 | #define ABIT_UGURU_CMD 0x00 | |
116 | /* Mostly used to check if uGuru is busy */ | |
117 | #define ABIT_UGURU_DATA 0x04 | |
118 | #define ABIT_UGURU_REGION_LENGTH 5 | |
119 | /* uGuru status' */ | |
120 | #define ABIT_UGURU_STATUS_WRITE 0x00 /* Ready to be written */ | |
121 | #define ABIT_UGURU_STATUS_READ 0x01 /* Ready to be read */ | |
122 | #define ABIT_UGURU_STATUS_INPUT 0x08 /* More input */ | |
123 | #define ABIT_UGURU_STATUS_READY 0x09 /* Ready to be written */ | |
f2b84bbc HG |
124 | |
125 | /* Constants */ | |
126 | /* in (Volt) sensors go up to 3494 mV, temp to 255000 millidegrees Celsius */ | |
127 | static const int abituguru_bank1_max_value[2] = { 3494, 255000 }; | |
128 | /* Min / Max allowed values for sensor2 (fan) alarm threshold, these values | |
129 | correspond to 300-3000 RPM */ | |
130 | static const u8 abituguru_bank2_min_threshold = 5; | |
131 | static const u8 abituguru_bank2_max_threshold = 50; | |
132 | /* Register 0 is a bitfield, 1 and 2 are pwm settings (255 = 100%), 3 and 4 | |
133 | are temperature trip points. */ | |
134 | static const int abituguru_pwm_settings_multiplier[5] = { 0, 1, 1, 1000, 1000 }; | |
135 | /* Min / Max allowed values for pwm_settings. Note: pwm1 (CPU fan) is a | |
136 | special case the minium allowed pwm% setting for this is 30% (77) on | |
137 | some MB's this special case is handled in the code! */ | |
138 | static const u8 abituguru_pwm_min[5] = { 0, 170, 170, 25, 25 }; | |
139 | static const u8 abituguru_pwm_max[5] = { 0, 255, 255, 75, 75 }; | |
140 | ||
141 | ||
142 | /* Insmod parameters */ | |
143 | static int force; | |
144 | module_param(force, bool, 0); | |
145 | MODULE_PARM_DESC(force, "Set to one to force detection."); | |
9b2ad129 HG |
146 | static int bank1_types[ABIT_UGURU_MAX_BANK1_SENSORS] = { -1, -1, -1, -1, -1, |
147 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; | |
148 | module_param_array(bank1_types, int, NULL, 0); | |
149 | MODULE_PARM_DESC(bank1_types, "Bank1 sensortype autodetection override:\n" | |
150 | " -1 autodetect\n" | |
151 | " 0 volt sensor\n" | |
152 | " 1 temp sensor\n" | |
153 | " 2 not connected"); | |
f2b84bbc HG |
154 | static int fan_sensors; |
155 | module_param(fan_sensors, int, 0); | |
156 | MODULE_PARM_DESC(fan_sensors, "Number of fan sensors on the uGuru " | |
157 | "(0 = autodetect)"); | |
158 | static int pwms; | |
159 | module_param(pwms, int, 0); | |
160 | MODULE_PARM_DESC(pwms, "Number of PWMs on the uGuru " | |
161 | "(0 = autodetect)"); | |
162 | ||
163 | /* Default verbose is 2, since this driver is still in the testing phase */ | |
164 | static int verbose = 2; | |
165 | module_param(verbose, int, 0644); | |
166 | MODULE_PARM_DESC(verbose, "How verbose should the driver be? (0-3):\n" | |
167 | " 0 normal output\n" | |
168 | " 1 + verbose error reporting\n" | |
169 | " 2 + sensors type probing info\n" | |
170 | " 3 + retryable error reporting"); | |
171 | ||
172 | ||
173 | /* For the Abit uGuru, we need to keep some data in memory. | |
174 | The structure is dynamically allocated, at the same time when a new | |
175 | abituguru device is allocated. */ | |
176 | struct abituguru_data { | |
177 | struct class_device *class_dev; /* hwmon registered device */ | |
178 | struct mutex update_lock; /* protect access to data and uGuru */ | |
179 | unsigned long last_updated; /* In jiffies */ | |
180 | unsigned short addr; /* uguru base address */ | |
181 | char uguru_ready; /* is the uguru in ready state? */ | |
182 | unsigned char update_timeouts; /* number of update timeouts since last | |
183 | successful update */ | |
184 | ||
185 | /* The sysfs attr and their names are generated automatically, for bank1 | |
186 | we cannot use a predefined array because we don't know beforehand | |
187 | of a sensor is a volt or a temp sensor, for bank2 and the pwms its | |
188 | easier todo things the same way. For in sensors we have 9 (temp 7) | |
189 | sysfs entries per sensor, for bank2 and pwms 6. */ | |
a2392e0b HG |
190 | struct sensor_device_attribute_2 sysfs_attr[ |
191 | ABIT_UGURU_MAX_BANK1_SENSORS * 9 + | |
f2b84bbc | 192 | ABIT_UGURU_MAX_BANK2_SENSORS * 6 + ABIT_UGURU_MAX_PWMS * 6]; |
a2392e0b HG |
193 | /* Buffer to store the dynamically generated sysfs names */ |
194 | char sysfs_names[ABITUGURU_SYSFS_NAMES_LENGTH]; | |
f2b84bbc HG |
195 | |
196 | /* Bank 1 data */ | |
a2392e0b HG |
197 | /* number of and addresses of [0] in, [1] temp sensors */ |
198 | u8 bank1_sensors[2]; | |
199 | u8 bank1_address[2][ABIT_UGURU_MAX_BANK1_SENSORS]; | |
200 | u8 bank1_value[ABIT_UGURU_MAX_BANK1_SENSORS]; | |
201 | /* This array holds 3 entries per sensor for the bank 1 sensor settings | |
f2b84bbc | 202 | (flags, min, max for voltage / flags, warn, shutdown for temp). */ |
a2392e0b | 203 | u8 bank1_settings[ABIT_UGURU_MAX_BANK1_SENSORS][3]; |
f2b84bbc HG |
204 | /* Maximum value for each sensor used for scaling in mV/millidegrees |
205 | Celsius. */ | |
a2392e0b | 206 | int bank1_max_value[ABIT_UGURU_MAX_BANK1_SENSORS]; |
f2b84bbc HG |
207 | |
208 | /* Bank 2 data, ABIT_UGURU_MAX_BANK2_SENSORS entries for bank2 */ | |
209 | u8 bank2_sensors; /* actual number of bank2 sensors found */ | |
210 | u8 bank2_value[ABIT_UGURU_MAX_BANK2_SENSORS]; | |
211 | u8 bank2_settings[ABIT_UGURU_MAX_BANK2_SENSORS][2]; /* flags, min */ | |
212 | ||
213 | /* Alarms 2 bytes for bank1, 1 byte for bank2 */ | |
214 | u8 alarms[3]; | |
215 | ||
216 | /* Fan PWM (speed control) 5 bytes per PWM */ | |
217 | u8 pwms; /* actual number of pwms found */ | |
218 | u8 pwm_settings[ABIT_UGURU_MAX_PWMS][5]; | |
219 | }; | |
220 | ||
221 | /* wait till the uguru is in the specified state */ | |
222 | static int abituguru_wait(struct abituguru_data *data, u8 state) | |
223 | { | |
224 | int timeout = ABIT_UGURU_WAIT_TIMEOUT; | |
225 | ||
226 | while (inb_p(data->addr + ABIT_UGURU_DATA) != state) { | |
227 | timeout--; | |
228 | if (timeout == 0) | |
229 | return -EBUSY; | |
faf9b616 HG |
230 | /* sleep a bit before our last few tries, see the comment on |
231 | this where ABIT_UGURU_WAIT_TIMEOUT_SLEEP is defined. */ | |
232 | if (timeout <= ABIT_UGURU_WAIT_TIMEOUT_SLEEP) | |
233 | msleep(0); | |
f2b84bbc HG |
234 | } |
235 | return 0; | |
236 | } | |
237 | ||
238 | /* Put the uguru in ready for input state */ | |
239 | static int abituguru_ready(struct abituguru_data *data) | |
240 | { | |
241 | int timeout = ABIT_UGURU_READY_TIMEOUT; | |
242 | ||
243 | if (data->uguru_ready) | |
244 | return 0; | |
245 | ||
246 | /* Reset? / Prepare for next read/write cycle */ | |
247 | outb(0x00, data->addr + ABIT_UGURU_DATA); | |
248 | ||
249 | /* Wait till the uguru is ready */ | |
250 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READY)) { | |
251 | ABIT_UGURU_DEBUG(1, | |
252 | "timeout exceeded waiting for ready state\n"); | |
253 | return -EIO; | |
254 | } | |
255 | ||
256 | /* Cmd port MUST be read now and should contain 0xAC */ | |
257 | while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) { | |
258 | timeout--; | |
259 | if (timeout == 0) { | |
260 | ABIT_UGURU_DEBUG(1, | |
261 | "CMD reg does not hold 0xAC after ready command\n"); | |
262 | return -EIO; | |
263 | } | |
faf9b616 | 264 | msleep(0); |
f2b84bbc HG |
265 | } |
266 | ||
267 | /* After this the ABIT_UGURU_DATA port should contain | |
268 | ABIT_UGURU_STATUS_INPUT */ | |
269 | timeout = ABIT_UGURU_READY_TIMEOUT; | |
270 | while (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) { | |
271 | timeout--; | |
272 | if (timeout == 0) { | |
273 | ABIT_UGURU_DEBUG(1, | |
274 | "state != more input after ready command\n"); | |
275 | return -EIO; | |
276 | } | |
faf9b616 | 277 | msleep(0); |
f2b84bbc HG |
278 | } |
279 | ||
280 | data->uguru_ready = 1; | |
281 | return 0; | |
282 | } | |
283 | ||
284 | /* Send the bank and then sensor address to the uGuru for the next read/write | |
285 | cycle. This function gets called as the first part of a read/write by | |
286 | abituguru_read and abituguru_write. This function should never be | |
287 | called by any other function. */ | |
288 | static int abituguru_send_address(struct abituguru_data *data, | |
289 | u8 bank_addr, u8 sensor_addr, int retries) | |
290 | { | |
291 | /* assume the caller does error handling itself if it has not requested | |
292 | any retries, and thus be quiet. */ | |
293 | int report_errors = retries; | |
294 | ||
295 | for (;;) { | |
296 | /* Make sure the uguru is ready and then send the bank address, | |
297 | after this the uguru is no longer "ready". */ | |
298 | if (abituguru_ready(data) != 0) | |
299 | return -EIO; | |
300 | outb(bank_addr, data->addr + ABIT_UGURU_DATA); | |
301 | data->uguru_ready = 0; | |
302 | ||
303 | /* Wait till the uguru is ABIT_UGURU_STATUS_INPUT state again | |
304 | and send the sensor addr */ | |
305 | if (abituguru_wait(data, ABIT_UGURU_STATUS_INPUT)) { | |
306 | if (retries) { | |
307 | ABIT_UGURU_DEBUG(3, "timeout exceeded " | |
308 | "waiting for more input state, %d " | |
309 | "tries remaining\n", retries); | |
310 | set_current_state(TASK_UNINTERRUPTIBLE); | |
311 | schedule_timeout(ABIT_UGURU_RETRY_DELAY); | |
312 | retries--; | |
313 | continue; | |
314 | } | |
315 | if (report_errors) | |
316 | ABIT_UGURU_DEBUG(1, "timeout exceeded " | |
317 | "waiting for more input state " | |
318 | "(bank: %d)\n", (int)bank_addr); | |
319 | return -EBUSY; | |
320 | } | |
321 | outb(sensor_addr, data->addr + ABIT_UGURU_CMD); | |
322 | return 0; | |
323 | } | |
324 | } | |
325 | ||
326 | /* Read count bytes from sensor sensor_addr in bank bank_addr and store the | |
327 | result in buf, retry the send address part of the read retries times. */ | |
328 | static int abituguru_read(struct abituguru_data *data, | |
329 | u8 bank_addr, u8 sensor_addr, u8 *buf, int count, int retries) | |
330 | { | |
331 | int i; | |
332 | ||
333 | /* Send the address */ | |
334 | i = abituguru_send_address(data, bank_addr, sensor_addr, retries); | |
335 | if (i) | |
336 | return i; | |
337 | ||
338 | /* And read the data */ | |
339 | for (i = 0; i < count; i++) { | |
340 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) { | |
faf9b616 HG |
341 | ABIT_UGURU_DEBUG(retries ? 1 : 3, |
342 | "timeout exceeded waiting for " | |
f2b84bbc HG |
343 | "read state (bank: %d, sensor: %d)\n", |
344 | (int)bank_addr, (int)sensor_addr); | |
345 | break; | |
346 | } | |
347 | buf[i] = inb(data->addr + ABIT_UGURU_CMD); | |
348 | } | |
349 | ||
350 | /* Last put the chip back in ready state */ | |
351 | abituguru_ready(data); | |
352 | ||
353 | return i; | |
354 | } | |
355 | ||
356 | /* Write count bytes from buf to sensor sensor_addr in bank bank_addr, the send | |
357 | address part of the write is always retried ABIT_UGURU_MAX_RETRIES times. */ | |
358 | static int abituguru_write(struct abituguru_data *data, | |
359 | u8 bank_addr, u8 sensor_addr, u8 *buf, int count) | |
360 | { | |
faf9b616 HG |
361 | /* We use the ready timeout as we have to wait for 0xAC just like the |
362 | ready function */ | |
363 | int i, timeout = ABIT_UGURU_READY_TIMEOUT; | |
f2b84bbc HG |
364 | |
365 | /* Send the address */ | |
366 | i = abituguru_send_address(data, bank_addr, sensor_addr, | |
367 | ABIT_UGURU_MAX_RETRIES); | |
368 | if (i) | |
369 | return i; | |
370 | ||
371 | /* And write the data */ | |
372 | for (i = 0; i < count; i++) { | |
373 | if (abituguru_wait(data, ABIT_UGURU_STATUS_WRITE)) { | |
374 | ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for " | |
375 | "write state (bank: %d, sensor: %d)\n", | |
376 | (int)bank_addr, (int)sensor_addr); | |
377 | break; | |
378 | } | |
379 | outb(buf[i], data->addr + ABIT_UGURU_CMD); | |
380 | } | |
381 | ||
382 | /* Now we need to wait till the chip is ready to be read again, | |
faf9b616 HG |
383 | so that we can read 0xAC as confirmation that our write has |
384 | succeeded. */ | |
f2b84bbc HG |
385 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) { |
386 | ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for read state " | |
387 | "after write (bank: %d, sensor: %d)\n", (int)bank_addr, | |
388 | (int)sensor_addr); | |
389 | return -EIO; | |
390 | } | |
391 | ||
392 | /* Cmd port MUST be read now and should contain 0xAC */ | |
faf9b616 HG |
393 | while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) { |
394 | timeout--; | |
395 | if (timeout == 0) { | |
396 | ABIT_UGURU_DEBUG(1, "CMD reg does not hold 0xAC after " | |
397 | "write (bank: %d, sensor: %d)\n", | |
398 | (int)bank_addr, (int)sensor_addr); | |
399 | return -EIO; | |
400 | } | |
401 | msleep(0); | |
f2b84bbc HG |
402 | } |
403 | ||
404 | /* Last put the chip back in ready state */ | |
405 | abituguru_ready(data); | |
406 | ||
407 | return i; | |
408 | } | |
409 | ||
410 | /* Detect sensor type. Temp and Volt sensors are enabled with | |
411 | different masks and will ignore enable masks not meant for them. | |
412 | This enables us to test what kind of sensor we're dealing with. | |
413 | By setting the alarm thresholds so that we will always get an | |
414 | alarm for sensor type X and then enabling the sensor as sensor type | |
415 | X, if we then get an alarm it is a sensor of type X. */ | |
416 | static int __devinit | |
417 | abituguru_detect_bank1_sensor_type(struct abituguru_data *data, | |
418 | u8 sensor_addr) | |
419 | { | |
420 | u8 val, buf[3]; | |
faf9b616 | 421 | int i, ret = -ENODEV; /* error is the most common used retval :| */ |
f2b84bbc | 422 | |
9b2ad129 HG |
423 | /* If overriden by the user return the user selected type */ |
424 | if (bank1_types[sensor_addr] >= ABIT_UGURU_IN_SENSOR && | |
425 | bank1_types[sensor_addr] <= ABIT_UGURU_NC) { | |
426 | ABIT_UGURU_DEBUG(2, "assuming sensor type %d for bank1 sensor " | |
427 | "%d because of \"bank1_types\" module param\n", | |
428 | bank1_types[sensor_addr], (int)sensor_addr); | |
429 | return bank1_types[sensor_addr]; | |
430 | } | |
431 | ||
f2b84bbc HG |
432 | /* First read the sensor and the current settings */ |
433 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, sensor_addr, &val, | |
434 | 1, ABIT_UGURU_MAX_RETRIES) != 1) | |
a2392e0b | 435 | return -ENODEV; |
f2b84bbc HG |
436 | |
437 | /* Test val is sane / usable for sensor type detection. */ | |
438 | if ((val < 10u) || (val > 240u)) { | |
439 | printk(KERN_WARNING ABIT_UGURU_NAME | |
440 | ": bank1-sensor: %d reading (%d) too close to limits, " | |
441 | "unable to determine sensor type, skipping sensor\n", | |
442 | (int)sensor_addr, (int)val); | |
443 | /* assume no sensor is there for sensors for which we can't | |
444 | determine the sensor type because their reading is too close | |
445 | to their limits, this usually means no sensor is there. */ | |
446 | return ABIT_UGURU_NC; | |
447 | } | |
448 | ||
449 | ABIT_UGURU_DEBUG(2, "testing bank1 sensor %d\n", (int)sensor_addr); | |
450 | /* Volt sensor test, enable volt low alarm, set min value ridicously | |
451 | high. If its a volt sensor this should always give us an alarm. */ | |
452 | buf[0] = ABIT_UGURU_VOLT_LOW_ALARM_ENABLE; | |
453 | buf[1] = 245; | |
454 | buf[2] = 250; | |
455 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, | |
456 | buf, 3) != 3) | |
faf9b616 | 457 | goto abituguru_detect_bank1_sensor_type_exit; |
f2b84bbc HG |
458 | /* Now we need 20 ms to give the uguru time to read the sensors |
459 | and raise a voltage alarm */ | |
460 | set_current_state(TASK_UNINTERRUPTIBLE); | |
461 | schedule_timeout(HZ/50); | |
462 | /* Check for alarm and check the alarm is a volt low alarm. */ | |
463 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, | |
464 | ABIT_UGURU_MAX_RETRIES) != 3) | |
faf9b616 | 465 | goto abituguru_detect_bank1_sensor_type_exit; |
f2b84bbc HG |
466 | if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { |
467 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, | |
468 | sensor_addr, buf, 3, | |
469 | ABIT_UGURU_MAX_RETRIES) != 3) | |
faf9b616 | 470 | goto abituguru_detect_bank1_sensor_type_exit; |
f2b84bbc | 471 | if (buf[0] & ABIT_UGURU_VOLT_LOW_ALARM_FLAG) { |
f2b84bbc | 472 | ABIT_UGURU_DEBUG(2, " found volt sensor\n"); |
faf9b616 HG |
473 | ret = ABIT_UGURU_IN_SENSOR; |
474 | goto abituguru_detect_bank1_sensor_type_exit; | |
f2b84bbc HG |
475 | } else |
476 | ABIT_UGURU_DEBUG(2, " alarm raised during volt " | |
477 | "sensor test, but volt low flag not set\n"); | |
478 | } else | |
479 | ABIT_UGURU_DEBUG(2, " alarm not raised during volt sensor " | |
480 | "test\n"); | |
481 | ||
482 | /* Temp sensor test, enable sensor as a temp sensor, set beep value | |
483 | ridicously low (but not too low, otherwise uguru ignores it). | |
484 | If its a temp sensor this should always give us an alarm. */ | |
485 | buf[0] = ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE; | |
486 | buf[1] = 5; | |
487 | buf[2] = 10; | |
488 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, | |
489 | buf, 3) != 3) | |
faf9b616 | 490 | goto abituguru_detect_bank1_sensor_type_exit; |
f2b84bbc HG |
491 | /* Now we need 50 ms to give the uguru time to read the sensors |
492 | and raise a temp alarm */ | |
493 | set_current_state(TASK_UNINTERRUPTIBLE); | |
494 | schedule_timeout(HZ/20); | |
495 | /* Check for alarm and check the alarm is a temp high alarm. */ | |
496 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, | |
497 | ABIT_UGURU_MAX_RETRIES) != 3) | |
faf9b616 | 498 | goto abituguru_detect_bank1_sensor_type_exit; |
f2b84bbc HG |
499 | if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { |
500 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, | |
501 | sensor_addr, buf, 3, | |
502 | ABIT_UGURU_MAX_RETRIES) != 3) | |
faf9b616 | 503 | goto abituguru_detect_bank1_sensor_type_exit; |
f2b84bbc | 504 | if (buf[0] & ABIT_UGURU_TEMP_HIGH_ALARM_FLAG) { |
f2b84bbc | 505 | ABIT_UGURU_DEBUG(2, " found temp sensor\n"); |
faf9b616 HG |
506 | ret = ABIT_UGURU_TEMP_SENSOR; |
507 | goto abituguru_detect_bank1_sensor_type_exit; | |
f2b84bbc HG |
508 | } else |
509 | ABIT_UGURU_DEBUG(2, " alarm raised during temp " | |
510 | "sensor test, but temp high flag not set\n"); | |
511 | } else | |
512 | ABIT_UGURU_DEBUG(2, " alarm not raised during temp sensor " | |
513 | "test\n"); | |
514 | ||
faf9b616 HG |
515 | ret = ABIT_UGURU_NC; |
516 | abituguru_detect_bank1_sensor_type_exit: | |
517 | /* Restore original settings, failing here is really BAD, it has been | |
518 | reported that some BIOS-es hang when entering the uGuru menu with | |
519 | invalid settings present in the uGuru, so we try this 3 times. */ | |
520 | for (i = 0; i < 3; i++) | |
521 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, | |
522 | sensor_addr, data->bank1_settings[sensor_addr], | |
523 | 3) == 3) | |
524 | break; | |
525 | if (i == 3) { | |
526 | printk(KERN_ERR ABIT_UGURU_NAME | |
527 | ": Fatal error could not restore original settings. " | |
528 | "This should never happen please report this to the " | |
529 | "abituguru maintainer (see MAINTAINERS)\n"); | |
a2392e0b | 530 | return -ENODEV; |
faf9b616 | 531 | } |
f2b84bbc HG |
532 | return ret; |
533 | } | |
534 | ||
535 | /* These functions try to find out how many sensors there are in bank2 and how | |
536 | many pwms there are. The purpose of this is to make sure that we don't give | |
537 | the user the possibility to change settings for non-existent sensors / pwm. | |
538 | The uGuru will happily read / write whatever memory happens to be after the | |
539 | memory storing the PWM settings when reading/writing to a PWM which is not | |
540 | there. Notice even if we detect a PWM which doesn't exist we normally won't | |
541 | write to it, unless the user tries to change the settings. | |
542 | ||
543 | Although the uGuru allows reading (settings) from non existing bank2 | |
544 | sensors, my version of the uGuru does seem to stop writing to them, the | |
545 | write function above aborts in this case with: | |
546 | "CMD reg does not hold 0xAC after write" | |
547 | ||
548 | Notice these 2 tests are non destructive iow read-only tests, otherwise | |
549 | they would defeat their purpose. Although for the bank2_sensors detection a | |
550 | read/write test would be feasible because of the reaction above, I've | |
551 | however opted to stay on the safe side. */ | |
552 | static void __devinit | |
553 | abituguru_detect_no_bank2_sensors(struct abituguru_data *data) | |
554 | { | |
555 | int i; | |
556 | ||
9b2ad129 | 557 | if (fan_sensors > 0 && fan_sensors <= ABIT_UGURU_MAX_BANK2_SENSORS) { |
f2b84bbc HG |
558 | data->bank2_sensors = fan_sensors; |
559 | ABIT_UGURU_DEBUG(2, "assuming %d fan sensors because of " | |
560 | "\"fan_sensors\" module param\n", | |
561 | (int)data->bank2_sensors); | |
562 | return; | |
563 | } | |
564 | ||
565 | ABIT_UGURU_DEBUG(2, "detecting number of fan sensors\n"); | |
566 | for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) { | |
567 | /* 0x89 are the known used bits: | |
568 | -0x80 enable shutdown | |
569 | -0x08 enable beep | |
570 | -0x01 enable alarm | |
571 | All other bits should be 0, but on some motherboards | |
b7c06604 HG |
572 | 0x40 (bit 6) is also high for some of the fans?? */ |
573 | if (data->bank2_settings[i][0] & ~0xC9) { | |
f2b84bbc HG |
574 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " |
575 | "to be a fan sensor: settings[0] = %02X\n", | |
576 | i, (unsigned int)data->bank2_settings[i][0]); | |
577 | break; | |
578 | } | |
579 | ||
580 | /* check if the threshold is within the allowed range */ | |
581 | if (data->bank2_settings[i][1] < | |
582 | abituguru_bank2_min_threshold) { | |
583 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " | |
584 | "to be a fan sensor: the threshold (%d) is " | |
585 | "below the minimum (%d)\n", i, | |
586 | (int)data->bank2_settings[i][1], | |
587 | (int)abituguru_bank2_min_threshold); | |
588 | break; | |
589 | } | |
590 | if (data->bank2_settings[i][1] > | |
591 | abituguru_bank2_max_threshold) { | |
592 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " | |
593 | "to be a fan sensor: the threshold (%d) is " | |
594 | "above the maximum (%d)\n", i, | |
595 | (int)data->bank2_settings[i][1], | |
596 | (int)abituguru_bank2_max_threshold); | |
597 | break; | |
598 | } | |
599 | } | |
600 | ||
601 | data->bank2_sensors = i; | |
602 | ABIT_UGURU_DEBUG(2, " found: %d fan sensors\n", | |
603 | (int)data->bank2_sensors); | |
604 | } | |
605 | ||
606 | static void __devinit | |
607 | abituguru_detect_no_pwms(struct abituguru_data *data) | |
608 | { | |
609 | int i, j; | |
610 | ||
9b2ad129 | 611 | if (pwms > 0 && pwms <= ABIT_UGURU_MAX_PWMS) { |
f2b84bbc HG |
612 | data->pwms = pwms; |
613 | ABIT_UGURU_DEBUG(2, "assuming %d PWM outputs because of " | |
614 | "\"pwms\" module param\n", (int)data->pwms); | |
615 | return; | |
616 | } | |
617 | ||
618 | ABIT_UGURU_DEBUG(2, "detecting number of PWM outputs\n"); | |
619 | for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) { | |
620 | /* 0x80 is the enable bit and the low | |
621 | nibble is which temp sensor to use, | |
622 | the other bits should be 0 */ | |
623 | if (data->pwm_settings[i][0] & ~0x8F) { | |
624 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
625 | "to be a pwm channel: settings[0] = %02X\n", | |
626 | i, (unsigned int)data->pwm_settings[i][0]); | |
627 | break; | |
628 | } | |
629 | ||
630 | /* the low nibble must correspond to one of the temp sensors | |
631 | we've found */ | |
632 | for (j = 0; j < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; | |
633 | j++) { | |
634 | if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][j] == | |
635 | (data->pwm_settings[i][0] & 0x0F)) | |
636 | break; | |
637 | } | |
638 | if (j == data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) { | |
639 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
640 | "to be a pwm channel: %d is not a valid temp " | |
641 | "sensor address\n", i, | |
642 | data->pwm_settings[i][0] & 0x0F); | |
643 | break; | |
644 | } | |
645 | ||
646 | /* check if all other settings are within the allowed range */ | |
647 | for (j = 1; j < 5; j++) { | |
648 | u8 min; | |
649 | /* special case pwm1 min pwm% */ | |
650 | if ((i == 0) && ((j == 1) || (j == 2))) | |
651 | min = 77; | |
652 | else | |
653 | min = abituguru_pwm_min[j]; | |
654 | if (data->pwm_settings[i][j] < min) { | |
655 | ABIT_UGURU_DEBUG(2, " pwm channel %d does " | |
656 | "not seem to be a pwm channel: " | |
657 | "setting %d (%d) is below the minimum " | |
658 | "value (%d)\n", i, j, | |
659 | (int)data->pwm_settings[i][j], | |
660 | (int)min); | |
661 | goto abituguru_detect_no_pwms_exit; | |
662 | } | |
663 | if (data->pwm_settings[i][j] > abituguru_pwm_max[j]) { | |
664 | ABIT_UGURU_DEBUG(2, " pwm channel %d does " | |
665 | "not seem to be a pwm channel: " | |
666 | "setting %d (%d) is above the maximum " | |
667 | "value (%d)\n", i, j, | |
668 | (int)data->pwm_settings[i][j], | |
669 | (int)abituguru_pwm_max[j]); | |
670 | goto abituguru_detect_no_pwms_exit; | |
671 | } | |
672 | } | |
673 | ||
674 | /* check that min temp < max temp and min pwm < max pwm */ | |
675 | if (data->pwm_settings[i][1] >= data->pwm_settings[i][2]) { | |
676 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
677 | "to be a pwm channel: min pwm (%d) >= " | |
678 | "max pwm (%d)\n", i, | |
679 | (int)data->pwm_settings[i][1], | |
680 | (int)data->pwm_settings[i][2]); | |
681 | break; | |
682 | } | |
683 | if (data->pwm_settings[i][3] >= data->pwm_settings[i][4]) { | |
684 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " | |
685 | "to be a pwm channel: min temp (%d) >= " | |
686 | "max temp (%d)\n", i, | |
687 | (int)data->pwm_settings[i][3], | |
688 | (int)data->pwm_settings[i][4]); | |
689 | break; | |
690 | } | |
691 | } | |
692 | ||
693 | abituguru_detect_no_pwms_exit: | |
694 | data->pwms = i; | |
695 | ABIT_UGURU_DEBUG(2, " found: %d PWM outputs\n", (int)data->pwms); | |
696 | } | |
697 | ||
698 | /* Following are the sysfs callback functions. These functions expect: | |
699 | sensor_device_attribute_2->index: sensor address/offset in the bank | |
700 | sensor_device_attribute_2->nr: register offset, bitmask or NA. */ | |
701 | static struct abituguru_data *abituguru_update_device(struct device *dev); | |
702 | ||
703 | static ssize_t show_bank1_value(struct device *dev, | |
704 | struct device_attribute *devattr, char *buf) | |
705 | { | |
706 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
707 | struct abituguru_data *data = abituguru_update_device(dev); | |
708 | if (!data) | |
709 | return -EIO; | |
710 | return sprintf(buf, "%d\n", (data->bank1_value[attr->index] * | |
711 | data->bank1_max_value[attr->index] + 128) / 255); | |
712 | } | |
713 | ||
714 | static ssize_t show_bank1_setting(struct device *dev, | |
715 | struct device_attribute *devattr, char *buf) | |
716 | { | |
717 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
718 | struct abituguru_data *data = dev_get_drvdata(dev); | |
719 | return sprintf(buf, "%d\n", | |
720 | (data->bank1_settings[attr->index][attr->nr] * | |
721 | data->bank1_max_value[attr->index] + 128) / 255); | |
722 | } | |
723 | ||
724 | static ssize_t show_bank2_value(struct device *dev, | |
725 | struct device_attribute *devattr, char *buf) | |
726 | { | |
727 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
728 | struct abituguru_data *data = abituguru_update_device(dev); | |
729 | if (!data) | |
730 | return -EIO; | |
731 | return sprintf(buf, "%d\n", (data->bank2_value[attr->index] * | |
732 | ABIT_UGURU_FAN_MAX + 128) / 255); | |
733 | } | |
734 | ||
735 | static ssize_t show_bank2_setting(struct device *dev, | |
736 | struct device_attribute *devattr, char *buf) | |
737 | { | |
738 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
739 | struct abituguru_data *data = dev_get_drvdata(dev); | |
740 | return sprintf(buf, "%d\n", | |
741 | (data->bank2_settings[attr->index][attr->nr] * | |
742 | ABIT_UGURU_FAN_MAX + 128) / 255); | |
743 | } | |
744 | ||
745 | static ssize_t store_bank1_setting(struct device *dev, struct device_attribute | |
746 | *devattr, const char *buf, size_t count) | |
747 | { | |
748 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
749 | struct abituguru_data *data = dev_get_drvdata(dev); | |
750 | u8 val = (simple_strtoul(buf, NULL, 10) * 255 + | |
751 | data->bank1_max_value[attr->index]/2) / | |
752 | data->bank1_max_value[attr->index]; | |
753 | ssize_t ret = count; | |
754 | ||
755 | mutex_lock(&data->update_lock); | |
756 | if (data->bank1_settings[attr->index][attr->nr] != val) { | |
757 | u8 orig_val = data->bank1_settings[attr->index][attr->nr]; | |
758 | data->bank1_settings[attr->index][attr->nr] = val; | |
759 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, | |
760 | attr->index, data->bank1_settings[attr->index], | |
761 | 3) <= attr->nr) { | |
762 | data->bank1_settings[attr->index][attr->nr] = orig_val; | |
763 | ret = -EIO; | |
764 | } | |
765 | } | |
766 | mutex_unlock(&data->update_lock); | |
767 | return ret; | |
768 | } | |
769 | ||
770 | static ssize_t store_bank2_setting(struct device *dev, struct device_attribute | |
771 | *devattr, const char *buf, size_t count) | |
772 | { | |
773 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
774 | struct abituguru_data *data = dev_get_drvdata(dev); | |
775 | u8 val = (simple_strtoul(buf, NULL, 10)*255 + ABIT_UGURU_FAN_MAX/2) / | |
776 | ABIT_UGURU_FAN_MAX; | |
777 | ssize_t ret = count; | |
778 | ||
779 | /* this check can be done before taking the lock */ | |
780 | if ((val < abituguru_bank2_min_threshold) || | |
781 | (val > abituguru_bank2_max_threshold)) | |
782 | return -EINVAL; | |
783 | ||
784 | mutex_lock(&data->update_lock); | |
785 | if (data->bank2_settings[attr->index][attr->nr] != val) { | |
786 | u8 orig_val = data->bank2_settings[attr->index][attr->nr]; | |
787 | data->bank2_settings[attr->index][attr->nr] = val; | |
788 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK2 + 2, | |
789 | attr->index, data->bank2_settings[attr->index], | |
790 | 2) <= attr->nr) { | |
791 | data->bank2_settings[attr->index][attr->nr] = orig_val; | |
792 | ret = -EIO; | |
793 | } | |
794 | } | |
795 | mutex_unlock(&data->update_lock); | |
796 | return ret; | |
797 | } | |
798 | ||
799 | static ssize_t show_bank1_alarm(struct device *dev, | |
800 | struct device_attribute *devattr, char *buf) | |
801 | { | |
802 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
803 | struct abituguru_data *data = abituguru_update_device(dev); | |
804 | if (!data) | |
805 | return -EIO; | |
806 | /* See if the alarm bit for this sensor is set, and if the | |
807 | alarm matches the type of alarm we're looking for (for volt | |
808 | it can be either low or high). The type is stored in a few | |
809 | readonly bits in the settings part of the relevant sensor. | |
810 | The bitmask of the type is passed to us in attr->nr. */ | |
811 | if ((data->alarms[attr->index / 8] & (0x01 << (attr->index % 8))) && | |
812 | (data->bank1_settings[attr->index][0] & attr->nr)) | |
813 | return sprintf(buf, "1\n"); | |
814 | else | |
815 | return sprintf(buf, "0\n"); | |
816 | } | |
817 | ||
818 | static ssize_t show_bank2_alarm(struct device *dev, | |
819 | struct device_attribute *devattr, char *buf) | |
820 | { | |
821 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
822 | struct abituguru_data *data = abituguru_update_device(dev); | |
823 | if (!data) | |
824 | return -EIO; | |
825 | if (data->alarms[2] & (0x01 << attr->index)) | |
826 | return sprintf(buf, "1\n"); | |
827 | else | |
828 | return sprintf(buf, "0\n"); | |
829 | } | |
830 | ||
831 | static ssize_t show_bank1_mask(struct device *dev, | |
832 | struct device_attribute *devattr, char *buf) | |
833 | { | |
834 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
835 | struct abituguru_data *data = dev_get_drvdata(dev); | |
836 | if (data->bank1_settings[attr->index][0] & attr->nr) | |
837 | return sprintf(buf, "1\n"); | |
838 | else | |
839 | return sprintf(buf, "0\n"); | |
840 | } | |
841 | ||
842 | static ssize_t show_bank2_mask(struct device *dev, | |
843 | struct device_attribute *devattr, char *buf) | |
844 | { | |
845 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
846 | struct abituguru_data *data = dev_get_drvdata(dev); | |
847 | if (data->bank2_settings[attr->index][0] & attr->nr) | |
848 | return sprintf(buf, "1\n"); | |
849 | else | |
850 | return sprintf(buf, "0\n"); | |
851 | } | |
852 | ||
853 | static ssize_t store_bank1_mask(struct device *dev, | |
854 | struct device_attribute *devattr, const char *buf, size_t count) | |
855 | { | |
856 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
857 | struct abituguru_data *data = dev_get_drvdata(dev); | |
858 | int mask = simple_strtoul(buf, NULL, 10); | |
859 | ssize_t ret = count; | |
860 | u8 orig_val; | |
861 | ||
862 | mutex_lock(&data->update_lock); | |
863 | orig_val = data->bank1_settings[attr->index][0]; | |
864 | ||
865 | if (mask) | |
866 | data->bank1_settings[attr->index][0] |= attr->nr; | |
867 | else | |
868 | data->bank1_settings[attr->index][0] &= ~attr->nr; | |
869 | ||
870 | if ((data->bank1_settings[attr->index][0] != orig_val) && | |
871 | (abituguru_write(data, | |
872 | ABIT_UGURU_SENSOR_BANK1 + 2, attr->index, | |
873 | data->bank1_settings[attr->index], 3) < 1)) { | |
874 | data->bank1_settings[attr->index][0] = orig_val; | |
875 | ret = -EIO; | |
876 | } | |
877 | mutex_unlock(&data->update_lock); | |
878 | return ret; | |
879 | } | |
880 | ||
881 | static ssize_t store_bank2_mask(struct device *dev, | |
882 | struct device_attribute *devattr, const char *buf, size_t count) | |
883 | { | |
884 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
885 | struct abituguru_data *data = dev_get_drvdata(dev); | |
886 | int mask = simple_strtoul(buf, NULL, 10); | |
887 | ssize_t ret = count; | |
888 | u8 orig_val; | |
889 | ||
890 | mutex_lock(&data->update_lock); | |
891 | orig_val = data->bank2_settings[attr->index][0]; | |
892 | ||
893 | if (mask) | |
894 | data->bank2_settings[attr->index][0] |= attr->nr; | |
895 | else | |
896 | data->bank2_settings[attr->index][0] &= ~attr->nr; | |
897 | ||
898 | if ((data->bank2_settings[attr->index][0] != orig_val) && | |
899 | (abituguru_write(data, | |
900 | ABIT_UGURU_SENSOR_BANK2 + 2, attr->index, | |
901 | data->bank2_settings[attr->index], 2) < 1)) { | |
902 | data->bank2_settings[attr->index][0] = orig_val; | |
903 | ret = -EIO; | |
904 | } | |
905 | mutex_unlock(&data->update_lock); | |
906 | return ret; | |
907 | } | |
908 | ||
909 | /* Fan PWM (speed control) */ | |
910 | static ssize_t show_pwm_setting(struct device *dev, | |
911 | struct device_attribute *devattr, char *buf) | |
912 | { | |
913 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
914 | struct abituguru_data *data = dev_get_drvdata(dev); | |
915 | return sprintf(buf, "%d\n", data->pwm_settings[attr->index][attr->nr] * | |
916 | abituguru_pwm_settings_multiplier[attr->nr]); | |
917 | } | |
918 | ||
919 | static ssize_t store_pwm_setting(struct device *dev, struct device_attribute | |
920 | *devattr, const char *buf, size_t count) | |
921 | { | |
922 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
923 | struct abituguru_data *data = dev_get_drvdata(dev); | |
924 | u8 min, val = (simple_strtoul(buf, NULL, 10) + | |
925 | abituguru_pwm_settings_multiplier[attr->nr]/2) / | |
926 | abituguru_pwm_settings_multiplier[attr->nr]; | |
927 | ssize_t ret = count; | |
928 | ||
929 | /* special case pwm1 min pwm% */ | |
930 | if ((attr->index == 0) && ((attr->nr == 1) || (attr->nr == 2))) | |
931 | min = 77; | |
932 | else | |
933 | min = abituguru_pwm_min[attr->nr]; | |
934 | ||
935 | /* this check can be done before taking the lock */ | |
936 | if ((val < min) || (val > abituguru_pwm_max[attr->nr])) | |
937 | return -EINVAL; | |
938 | ||
939 | mutex_lock(&data->update_lock); | |
940 | /* this check needs to be done after taking the lock */ | |
941 | if ((attr->nr & 1) && | |
942 | (val >= data->pwm_settings[attr->index][attr->nr + 1])) | |
943 | ret = -EINVAL; | |
944 | else if (!(attr->nr & 1) && | |
945 | (val <= data->pwm_settings[attr->index][attr->nr - 1])) | |
946 | ret = -EINVAL; | |
947 | else if (data->pwm_settings[attr->index][attr->nr] != val) { | |
948 | u8 orig_val = data->pwm_settings[attr->index][attr->nr]; | |
949 | data->pwm_settings[attr->index][attr->nr] = val; | |
950 | if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, | |
951 | attr->index, data->pwm_settings[attr->index], | |
952 | 5) <= attr->nr) { | |
953 | data->pwm_settings[attr->index][attr->nr] = | |
954 | orig_val; | |
955 | ret = -EIO; | |
956 | } | |
957 | } | |
958 | mutex_unlock(&data->update_lock); | |
959 | return ret; | |
960 | } | |
961 | ||
962 | static ssize_t show_pwm_sensor(struct device *dev, | |
963 | struct device_attribute *devattr, char *buf) | |
964 | { | |
965 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
966 | struct abituguru_data *data = dev_get_drvdata(dev); | |
967 | int i; | |
968 | /* We need to walk to the temp sensor addresses to find what | |
969 | the userspace id of the configured temp sensor is. */ | |
970 | for (i = 0; i < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; i++) | |
971 | if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][i] == | |
972 | (data->pwm_settings[attr->index][0] & 0x0F)) | |
973 | return sprintf(buf, "%d\n", i+1); | |
974 | ||
975 | return -ENXIO; | |
976 | } | |
977 | ||
978 | static ssize_t store_pwm_sensor(struct device *dev, struct device_attribute | |
979 | *devattr, const char *buf, size_t count) | |
980 | { | |
981 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
982 | struct abituguru_data *data = dev_get_drvdata(dev); | |
983 | unsigned long val = simple_strtoul(buf, NULL, 10) - 1; | |
984 | ssize_t ret = count; | |
985 | ||
986 | mutex_lock(&data->update_lock); | |
987 | if (val < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) { | |
988 | u8 orig_val = data->pwm_settings[attr->index][0]; | |
989 | u8 address = data->bank1_address[ABIT_UGURU_TEMP_SENSOR][val]; | |
990 | data->pwm_settings[attr->index][0] &= 0xF0; | |
991 | data->pwm_settings[attr->index][0] |= address; | |
992 | if (data->pwm_settings[attr->index][0] != orig_val) { | |
993 | if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, | |
994 | attr->index, | |
995 | data->pwm_settings[attr->index], | |
996 | 5) < 1) { | |
997 | data->pwm_settings[attr->index][0] = orig_val; | |
998 | ret = -EIO; | |
999 | } | |
1000 | } | |
1001 | } | |
1002 | else | |
1003 | ret = -EINVAL; | |
1004 | mutex_unlock(&data->update_lock); | |
1005 | return ret; | |
1006 | } | |
1007 | ||
1008 | static ssize_t show_pwm_enable(struct device *dev, | |
1009 | struct device_attribute *devattr, char *buf) | |
1010 | { | |
1011 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
1012 | struct abituguru_data *data = dev_get_drvdata(dev); | |
1013 | int res = 0; | |
1014 | if (data->pwm_settings[attr->index][0] & ABIT_UGURU_FAN_PWM_ENABLE) | |
1015 | res = 2; | |
1016 | return sprintf(buf, "%d\n", res); | |
1017 | } | |
1018 | ||
1019 | static ssize_t store_pwm_enable(struct device *dev, struct device_attribute | |
1020 | *devattr, const char *buf, size_t count) | |
1021 | { | |
1022 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); | |
1023 | struct abituguru_data *data = dev_get_drvdata(dev); | |
1024 | u8 orig_val, user_val = simple_strtoul(buf, NULL, 10); | |
1025 | ssize_t ret = count; | |
1026 | ||
1027 | mutex_lock(&data->update_lock); | |
1028 | orig_val = data->pwm_settings[attr->index][0]; | |
1029 | switch (user_val) { | |
1030 | case 0: | |
1031 | data->pwm_settings[attr->index][0] &= | |
1032 | ~ABIT_UGURU_FAN_PWM_ENABLE; | |
1033 | break; | |
1034 | case 2: | |
1035 | data->pwm_settings[attr->index][0] |= | |
1036 | ABIT_UGURU_FAN_PWM_ENABLE; | |
1037 | break; | |
1038 | default: | |
1039 | ret = -EINVAL; | |
1040 | } | |
1041 | if ((data->pwm_settings[attr->index][0] != orig_val) && | |
1042 | (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, | |
1043 | attr->index, data->pwm_settings[attr->index], | |
1044 | 5) < 1)) { | |
1045 | data->pwm_settings[attr->index][0] = orig_val; | |
1046 | ret = -EIO; | |
1047 | } | |
1048 | mutex_unlock(&data->update_lock); | |
1049 | return ret; | |
1050 | } | |
1051 | ||
1052 | static ssize_t show_name(struct device *dev, | |
1053 | struct device_attribute *devattr, char *buf) | |
1054 | { | |
1055 | return sprintf(buf, "%s\n", ABIT_UGURU_NAME); | |
1056 | } | |
1057 | ||
1058 | /* Sysfs attr templates, the real entries are generated automatically. */ | |
1059 | static const | |
1060 | struct sensor_device_attribute_2 abituguru_sysfs_bank1_templ[2][9] = { | |
1061 | { | |
1062 | SENSOR_ATTR_2(in%d_input, 0444, show_bank1_value, NULL, 0, 0), | |
1063 | SENSOR_ATTR_2(in%d_min, 0644, show_bank1_setting, | |
1064 | store_bank1_setting, 1, 0), | |
1065 | SENSOR_ATTR_2(in%d_min_alarm, 0444, show_bank1_alarm, NULL, | |
1066 | ABIT_UGURU_VOLT_LOW_ALARM_FLAG, 0), | |
1067 | SENSOR_ATTR_2(in%d_max, 0644, show_bank1_setting, | |
1068 | store_bank1_setting, 2, 0), | |
1069 | SENSOR_ATTR_2(in%d_max_alarm, 0444, show_bank1_alarm, NULL, | |
1070 | ABIT_UGURU_VOLT_HIGH_ALARM_FLAG, 0), | |
1071 | SENSOR_ATTR_2(in%d_beep, 0644, show_bank1_mask, | |
1072 | store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0), | |
1073 | SENSOR_ATTR_2(in%d_shutdown, 0644, show_bank1_mask, | |
1074 | store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), | |
1075 | SENSOR_ATTR_2(in%d_min_alarm_enable, 0644, show_bank1_mask, | |
1076 | store_bank1_mask, ABIT_UGURU_VOLT_LOW_ALARM_ENABLE, 0), | |
1077 | SENSOR_ATTR_2(in%d_max_alarm_enable, 0644, show_bank1_mask, | |
1078 | store_bank1_mask, ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE, 0), | |
1079 | }, { | |
1080 | SENSOR_ATTR_2(temp%d_input, 0444, show_bank1_value, NULL, 0, 0), | |
1081 | SENSOR_ATTR_2(temp%d_alarm, 0444, show_bank1_alarm, NULL, | |
1082 | ABIT_UGURU_TEMP_HIGH_ALARM_FLAG, 0), | |
1083 | SENSOR_ATTR_2(temp%d_max, 0644, show_bank1_setting, | |
1084 | store_bank1_setting, 1, 0), | |
1085 | SENSOR_ATTR_2(temp%d_crit, 0644, show_bank1_setting, | |
1086 | store_bank1_setting, 2, 0), | |
1087 | SENSOR_ATTR_2(temp%d_beep, 0644, show_bank1_mask, | |
1088 | store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0), | |
1089 | SENSOR_ATTR_2(temp%d_shutdown, 0644, show_bank1_mask, | |
1090 | store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), | |
1091 | SENSOR_ATTR_2(temp%d_alarm_enable, 0644, show_bank1_mask, | |
1092 | store_bank1_mask, ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE, 0), | |
1093 | } | |
1094 | }; | |
1095 | ||
1096 | static const struct sensor_device_attribute_2 abituguru_sysfs_fan_templ[6] = { | |
1097 | SENSOR_ATTR_2(fan%d_input, 0444, show_bank2_value, NULL, 0, 0), | |
1098 | SENSOR_ATTR_2(fan%d_alarm, 0444, show_bank2_alarm, NULL, 0, 0), | |
1099 | SENSOR_ATTR_2(fan%d_min, 0644, show_bank2_setting, | |
1100 | store_bank2_setting, 1, 0), | |
1101 | SENSOR_ATTR_2(fan%d_beep, 0644, show_bank2_mask, | |
1102 | store_bank2_mask, ABIT_UGURU_BEEP_ENABLE, 0), | |
1103 | SENSOR_ATTR_2(fan%d_shutdown, 0644, show_bank2_mask, | |
1104 | store_bank2_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), | |
1105 | SENSOR_ATTR_2(fan%d_alarm_enable, 0644, show_bank2_mask, | |
1106 | store_bank2_mask, ABIT_UGURU_FAN_LOW_ALARM_ENABLE, 0), | |
1107 | }; | |
1108 | ||
1109 | static const struct sensor_device_attribute_2 abituguru_sysfs_pwm_templ[6] = { | |
1110 | SENSOR_ATTR_2(pwm%d_enable, 0644, show_pwm_enable, | |
1111 | store_pwm_enable, 0, 0), | |
1112 | SENSOR_ATTR_2(pwm%d_auto_channels_temp, 0644, show_pwm_sensor, | |
1113 | store_pwm_sensor, 0, 0), | |
1114 | SENSOR_ATTR_2(pwm%d_auto_point1_pwm, 0644, show_pwm_setting, | |
1115 | store_pwm_setting, 1, 0), | |
1116 | SENSOR_ATTR_2(pwm%d_auto_point2_pwm, 0644, show_pwm_setting, | |
1117 | store_pwm_setting, 2, 0), | |
1118 | SENSOR_ATTR_2(pwm%d_auto_point1_temp, 0644, show_pwm_setting, | |
1119 | store_pwm_setting, 3, 0), | |
1120 | SENSOR_ATTR_2(pwm%d_auto_point2_temp, 0644, show_pwm_setting, | |
1121 | store_pwm_setting, 4, 0), | |
1122 | }; | |
1123 | ||
a2392e0b | 1124 | static struct sensor_device_attribute_2 abituguru_sysfs_attr[] = { |
f2b84bbc HG |
1125 | SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0), |
1126 | }; | |
1127 | ||
1128 | static int __devinit abituguru_probe(struct platform_device *pdev) | |
1129 | { | |
1130 | struct abituguru_data *data; | |
a2392e0b | 1131 | int i, j, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV; |
f2b84bbc | 1132 | char *sysfs_filename; |
f2b84bbc HG |
1133 | |
1134 | /* El weirdo probe order, to keep the sysfs order identical to the | |
1135 | BIOS and window-appliction listing order. */ | |
a2392e0b HG |
1136 | const u8 probe_order[ABIT_UGURU_MAX_BANK1_SENSORS] = { |
1137 | 0x00, 0x01, 0x03, 0x04, 0x0A, 0x08, 0x0E, 0x02, | |
1138 | 0x09, 0x06, 0x05, 0x0B, 0x0F, 0x0D, 0x07, 0x0C }; | |
f2b84bbc HG |
1139 | |
1140 | if (!(data = kzalloc(sizeof(struct abituguru_data), GFP_KERNEL))) | |
1141 | return -ENOMEM; | |
1142 | ||
1143 | data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; | |
1144 | mutex_init(&data->update_lock); | |
1145 | platform_set_drvdata(pdev, data); | |
1146 | ||
1147 | /* See if the uGuru is ready */ | |
1148 | if (inb_p(data->addr + ABIT_UGURU_DATA) == ABIT_UGURU_STATUS_INPUT) | |
1149 | data->uguru_ready = 1; | |
1150 | ||
1151 | /* Completely read the uGuru this has 2 purposes: | |
1152 | - testread / see if one really is there. | |
1153 | - make an in memory copy of all the uguru settings for future use. */ | |
1154 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, | |
a2392e0b HG |
1155 | data->alarms, 3, ABIT_UGURU_MAX_RETRIES) != 3) |
1156 | goto abituguru_probe_error; | |
f2b84bbc | 1157 | |
a2392e0b | 1158 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { |
f2b84bbc HG |
1159 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, i, |
1160 | &data->bank1_value[i], 1, | |
a2392e0b HG |
1161 | ABIT_UGURU_MAX_RETRIES) != 1) |
1162 | goto abituguru_probe_error; | |
f2b84bbc HG |
1163 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1+1, i, |
1164 | data->bank1_settings[i], 3, | |
a2392e0b HG |
1165 | ABIT_UGURU_MAX_RETRIES) != 3) |
1166 | goto abituguru_probe_error; | |
f2b84bbc HG |
1167 | } |
1168 | /* Note: We don't know how many bank2 sensors / pwms there really are, | |
1169 | but in order to "detect" this we need to read the maximum amount | |
1170 | anyways. If we read sensors/pwms not there we'll just read crap | |
1171 | this can't hurt. We need the detection because we don't want | |
1172 | unwanted writes, which will hurt! */ | |
1173 | for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) { | |
1174 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2, i, | |
1175 | &data->bank2_value[i], 1, | |
a2392e0b HG |
1176 | ABIT_UGURU_MAX_RETRIES) != 1) |
1177 | goto abituguru_probe_error; | |
f2b84bbc HG |
1178 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2+1, i, |
1179 | data->bank2_settings[i], 2, | |
a2392e0b HG |
1180 | ABIT_UGURU_MAX_RETRIES) != 2) |
1181 | goto abituguru_probe_error; | |
f2b84bbc HG |
1182 | } |
1183 | for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) { | |
1184 | if (abituguru_read(data, ABIT_UGURU_FAN_PWM, i, | |
1185 | data->pwm_settings[i], 5, | |
a2392e0b HG |
1186 | ABIT_UGURU_MAX_RETRIES) != 5) |
1187 | goto abituguru_probe_error; | |
f2b84bbc HG |
1188 | } |
1189 | data->last_updated = jiffies; | |
1190 | ||
1191 | /* Detect sensor types and fill the sysfs attr for bank1 */ | |
a2392e0b HG |
1192 | sysfs_attr_i = 0; |
1193 | sysfs_filename = data->sysfs_names; | |
1194 | sysfs_names_free = ABITUGURU_SYSFS_NAMES_LENGTH; | |
1195 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { | |
f2b84bbc | 1196 | res = abituguru_detect_bank1_sensor_type(data, probe_order[i]); |
a2392e0b HG |
1197 | if (res < 0) |
1198 | goto abituguru_probe_error; | |
f2b84bbc HG |
1199 | if (res == ABIT_UGURU_NC) |
1200 | continue; | |
1201 | ||
a2392e0b | 1202 | /* res 1 (temp) sensors have 7 sysfs entries, 0 (in) 9 */ |
f2b84bbc | 1203 | for (j = 0; j < (res ? 7 : 9); j++) { |
a2392e0b HG |
1204 | used = snprintf(sysfs_filename, sysfs_names_free, |
1205 | abituguru_sysfs_bank1_templ[res][j].dev_attr. | |
1206 | attr.name, data->bank1_sensors[res] + res) | |
1207 | + 1; | |
f2b84bbc HG |
1208 | data->sysfs_attr[sysfs_attr_i] = |
1209 | abituguru_sysfs_bank1_templ[res][j]; | |
1210 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = | |
1211 | sysfs_filename; | |
f2b84bbc | 1212 | data->sysfs_attr[sysfs_attr_i].index = probe_order[i]; |
a2392e0b HG |
1213 | sysfs_filename += used; |
1214 | sysfs_names_free -= used; | |
f2b84bbc HG |
1215 | sysfs_attr_i++; |
1216 | } | |
1217 | data->bank1_max_value[probe_order[i]] = | |
1218 | abituguru_bank1_max_value[res]; | |
1219 | data->bank1_address[res][data->bank1_sensors[res]] = | |
1220 | probe_order[i]; | |
1221 | data->bank1_sensors[res]++; | |
1222 | } | |
1223 | /* Detect number of sensors and fill the sysfs attr for bank2 (fans) */ | |
1224 | abituguru_detect_no_bank2_sensors(data); | |
1225 | for (i = 0; i < data->bank2_sensors; i++) { | |
a2392e0b HG |
1226 | for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_fan_templ); j++) { |
1227 | used = snprintf(sysfs_filename, sysfs_names_free, | |
1228 | abituguru_sysfs_fan_templ[j].dev_attr.attr.name, | |
1229 | i + 1) + 1; | |
f2b84bbc HG |
1230 | data->sysfs_attr[sysfs_attr_i] = |
1231 | abituguru_sysfs_fan_templ[j]; | |
1232 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = | |
1233 | sysfs_filename; | |
f2b84bbc | 1234 | data->sysfs_attr[sysfs_attr_i].index = i; |
a2392e0b HG |
1235 | sysfs_filename += used; |
1236 | sysfs_names_free -= used; | |
f2b84bbc HG |
1237 | sysfs_attr_i++; |
1238 | } | |
1239 | } | |
1240 | /* Detect number of sensors and fill the sysfs attr for pwms */ | |
1241 | abituguru_detect_no_pwms(data); | |
1242 | for (i = 0; i < data->pwms; i++) { | |
a2392e0b HG |
1243 | for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_pwm_templ); j++) { |
1244 | used = snprintf(sysfs_filename, sysfs_names_free, | |
1245 | abituguru_sysfs_pwm_templ[j].dev_attr.attr.name, | |
1246 | i + 1) + 1; | |
f2b84bbc HG |
1247 | data->sysfs_attr[sysfs_attr_i] = |
1248 | abituguru_sysfs_pwm_templ[j]; | |
1249 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = | |
1250 | sysfs_filename; | |
f2b84bbc | 1251 | data->sysfs_attr[sysfs_attr_i].index = i; |
a2392e0b HG |
1252 | sysfs_filename += used; |
1253 | sysfs_names_free -= used; | |
f2b84bbc HG |
1254 | sysfs_attr_i++; |
1255 | } | |
1256 | } | |
a2392e0b HG |
1257 | /* Fail safe check, this should never happen! */ |
1258 | if (sysfs_names_free < 0) { | |
1259 | printk(KERN_ERR ABIT_UGURU_NAME ": Fatal error ran out of " | |
1260 | "space for sysfs attr names. This should never " | |
1261 | "happen please report to the abituguru maintainer " | |
1262 | "(see MAINTAINERS)\n"); | |
1263 | res = -ENAMETOOLONG; | |
1264 | goto abituguru_probe_error; | |
f2b84bbc HG |
1265 | } |
1266 | printk(KERN_INFO ABIT_UGURU_NAME ": found Abit uGuru\n"); | |
1267 | ||
1268 | /* Register sysfs hooks */ | |
1269 | data->class_dev = hwmon_device_register(&pdev->dev); | |
1270 | if (IS_ERR(data->class_dev)) { | |
a2392e0b HG |
1271 | res = PTR_ERR(data->class_dev); |
1272 | goto abituguru_probe_error; | |
f2b84bbc HG |
1273 | } |
1274 | for (i = 0; i < sysfs_attr_i; i++) | |
1275 | device_create_file(&pdev->dev, &data->sysfs_attr[i].dev_attr); | |
a2392e0b HG |
1276 | for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++) |
1277 | device_create_file(&pdev->dev, | |
1278 | &abituguru_sysfs_attr[i].dev_attr); | |
f2b84bbc HG |
1279 | |
1280 | return 0; | |
a2392e0b HG |
1281 | |
1282 | abituguru_probe_error: | |
1283 | kfree(data); | |
1284 | return res; | |
f2b84bbc HG |
1285 | } |
1286 | ||
1287 | static int __devexit abituguru_remove(struct platform_device *pdev) | |
1288 | { | |
1289 | struct abituguru_data *data = platform_get_drvdata(pdev); | |
1290 | ||
1291 | platform_set_drvdata(pdev, NULL); | |
1292 | hwmon_device_unregister(data->class_dev); | |
1293 | kfree(data); | |
1294 | ||
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | static struct abituguru_data *abituguru_update_device(struct device *dev) | |
1299 | { | |
1300 | int i, err; | |
1301 | struct abituguru_data *data = dev_get_drvdata(dev); | |
1302 | /* fake a complete successful read if no update necessary. */ | |
1303 | char success = 1; | |
1304 | ||
1305 | mutex_lock(&data->update_lock); | |
1306 | if (time_after(jiffies, data->last_updated + HZ)) { | |
1307 | success = 0; | |
1308 | if ((err = abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, | |
1309 | data->alarms, 3, 0)) != 3) | |
1310 | goto LEAVE_UPDATE; | |
a2392e0b | 1311 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { |
f2b84bbc HG |
1312 | if ((err = abituguru_read(data, |
1313 | ABIT_UGURU_SENSOR_BANK1, i, | |
1314 | &data->bank1_value[i], 1, 0)) != 1) | |
1315 | goto LEAVE_UPDATE; | |
1316 | if ((err = abituguru_read(data, | |
1317 | ABIT_UGURU_SENSOR_BANK1 + 1, i, | |
1318 | data->bank1_settings[i], 3, 0)) != 3) | |
1319 | goto LEAVE_UPDATE; | |
1320 | } | |
1321 | for (i = 0; i < data->bank2_sensors; i++) | |
1322 | if ((err = abituguru_read(data, | |
1323 | ABIT_UGURU_SENSOR_BANK2, i, | |
1324 | &data->bank2_value[i], 1, 0)) != 1) | |
1325 | goto LEAVE_UPDATE; | |
1326 | /* success! */ | |
1327 | success = 1; | |
1328 | data->update_timeouts = 0; | |
1329 | LEAVE_UPDATE: | |
1330 | /* handle timeout condition */ | |
faf9b616 | 1331 | if (!success && (err == -EBUSY || err >= 0)) { |
f2b84bbc HG |
1332 | /* No overflow please */ |
1333 | if (data->update_timeouts < 255u) | |
1334 | data->update_timeouts++; | |
1335 | if (data->update_timeouts <= ABIT_UGURU_MAX_TIMEOUTS) { | |
1336 | ABIT_UGURU_DEBUG(3, "timeout exceeded, will " | |
1337 | "try again next update\n"); | |
1338 | /* Just a timeout, fake a successful read */ | |
1339 | success = 1; | |
1340 | } else | |
1341 | ABIT_UGURU_DEBUG(1, "timeout exceeded %d " | |
1342 | "times waiting for more input state\n", | |
1343 | (int)data->update_timeouts); | |
1344 | } | |
1345 | /* On success set last_updated */ | |
1346 | if (success) | |
1347 | data->last_updated = jiffies; | |
1348 | } | |
1349 | mutex_unlock(&data->update_lock); | |
1350 | ||
1351 | if (success) | |
1352 | return data; | |
1353 | else | |
1354 | return NULL; | |
1355 | } | |
1356 | ||
360b9ab2 HG |
1357 | #ifdef CONFIG_PM |
1358 | static int abituguru_suspend(struct platform_device *pdev, pm_message_t state) | |
1359 | { | |
1360 | struct abituguru_data *data = platform_get_drvdata(pdev); | |
1361 | /* make sure all communications with the uguru are done and no new | |
1362 | ones are started */ | |
1363 | mutex_lock(&data->update_lock); | |
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | static int abituguru_resume(struct platform_device *pdev) | |
1368 | { | |
1369 | struct abituguru_data *data = platform_get_drvdata(pdev); | |
1370 | /* See if the uGuru is still ready */ | |
1371 | if (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) | |
1372 | data->uguru_ready = 0; | |
1373 | mutex_unlock(&data->update_lock); | |
1374 | return 0; | |
1375 | } | |
1376 | #else | |
1377 | #define abituguru_suspend NULL | |
1378 | #define abituguru_resume NULL | |
1379 | #endif /* CONFIG_PM */ | |
1380 | ||
f2b84bbc HG |
1381 | static struct platform_driver abituguru_driver = { |
1382 | .driver = { | |
1383 | .owner = THIS_MODULE, | |
1384 | .name = ABIT_UGURU_NAME, | |
1385 | }, | |
360b9ab2 HG |
1386 | .probe = abituguru_probe, |
1387 | .remove = __devexit_p(abituguru_remove), | |
1388 | .suspend = abituguru_suspend, | |
1389 | .resume = abituguru_resume, | |
f2b84bbc HG |
1390 | }; |
1391 | ||
1392 | static int __init abituguru_detect(void) | |
1393 | { | |
1394 | /* See if there is an uguru there. After a reboot uGuru will hold 0x00 | |
1395 | at DATA and 0xAC, when this driver has already been loaded once | |
1396 | DATA will hold 0x08. For most uGuru's CMD will hold 0xAC in either | |
1397 | scenario but some will hold 0x00. | |
1398 | Some uGuru's initally hold 0x09 at DATA and will only hold 0x08 | |
1399 | after reading CMD first, so CMD must be read first! */ | |
1400 | u8 cmd_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_CMD); | |
1401 | u8 data_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_DATA); | |
1402 | if (((data_val == 0x00) || (data_val == 0x08)) && | |
1403 | ((cmd_val == 0x00) || (cmd_val == 0xAC))) | |
1404 | return ABIT_UGURU_BASE; | |
1405 | ||
1406 | ABIT_UGURU_DEBUG(2, "no Abit uGuru found, data = 0x%02X, cmd = " | |
1407 | "0x%02X\n", (unsigned int)data_val, (unsigned int)cmd_val); | |
1408 | ||
1409 | if (force) { | |
1410 | printk(KERN_INFO ABIT_UGURU_NAME ": Assuming Abit uGuru is " | |
1411 | "present because of \"force\" parameter\n"); | |
1412 | return ABIT_UGURU_BASE; | |
1413 | } | |
1414 | ||
1415 | /* No uGuru found */ | |
1416 | return -ENODEV; | |
1417 | } | |
1418 | ||
1419 | static struct platform_device *abituguru_pdev; | |
1420 | ||
1421 | static int __init abituguru_init(void) | |
1422 | { | |
1423 | int address, err; | |
1424 | struct resource res = { .flags = IORESOURCE_IO }; | |
1425 | ||
1426 | address = abituguru_detect(); | |
1427 | if (address < 0) | |
1428 | return address; | |
1429 | ||
1430 | err = platform_driver_register(&abituguru_driver); | |
1431 | if (err) | |
1432 | goto exit; | |
1433 | ||
1434 | abituguru_pdev = platform_device_alloc(ABIT_UGURU_NAME, address); | |
1435 | if (!abituguru_pdev) { | |
1436 | printk(KERN_ERR ABIT_UGURU_NAME | |
1437 | ": Device allocation failed\n"); | |
1438 | err = -ENOMEM; | |
1439 | goto exit_driver_unregister; | |
1440 | } | |
1441 | ||
1442 | res.start = address; | |
1443 | res.end = address + ABIT_UGURU_REGION_LENGTH - 1; | |
1444 | res.name = ABIT_UGURU_NAME; | |
1445 | ||
1446 | err = platform_device_add_resources(abituguru_pdev, &res, 1); | |
1447 | if (err) { | |
1448 | printk(KERN_ERR ABIT_UGURU_NAME | |
1449 | ": Device resource addition failed (%d)\n", err); | |
1450 | goto exit_device_put; | |
1451 | } | |
1452 | ||
1453 | err = platform_device_add(abituguru_pdev); | |
1454 | if (err) { | |
1455 | printk(KERN_ERR ABIT_UGURU_NAME | |
1456 | ": Device addition failed (%d)\n", err); | |
1457 | goto exit_device_put; | |
1458 | } | |
1459 | ||
1460 | return 0; | |
1461 | ||
1462 | exit_device_put: | |
1463 | platform_device_put(abituguru_pdev); | |
1464 | exit_driver_unregister: | |
1465 | platform_driver_unregister(&abituguru_driver); | |
1466 | exit: | |
1467 | return err; | |
1468 | } | |
1469 | ||
1470 | static void __exit abituguru_exit(void) | |
1471 | { | |
1472 | platform_device_unregister(abituguru_pdev); | |
1473 | platform_driver_unregister(&abituguru_driver); | |
1474 | } | |
1475 | ||
1476 | MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>"); | |
1477 | MODULE_DESCRIPTION("Abit uGuru Sensor device"); | |
1478 | MODULE_LICENSE("GPL"); | |
1479 | ||
1480 | module_init(abituguru_init); | |
1481 | module_exit(abituguru_exit); |