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Hans de Goedef2b84bb2006-06-04 20:22:24 +02001/*
Guenter Roeck1bd385d2012-01-14 12:30:52 -08002 * abituguru.c Copyright (c) 2005-2006 Hans de Goede <hdegoede@redhat.com>
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 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +020018/*
Guenter Roeck1bd385d2012-01-14 12:30:52 -080019 * This driver supports the sensor part of the first and second revision of
20 * the custom Abit uGuru chip found on Abit uGuru motherboards. Note: because
21 * of lack of specs the CPU/RAM voltage & frequency control is not supported!
22 */
Joe Perches28ebfa12010-10-20 06:51:25 +000023
24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
Hans de Goedef2b84bb2006-06-04 20:22:24 +020026#include <linux/module.h>
Al Virof6a57032006-10-18 01:47:25 -040027#include <linux/sched.h>
Hans de Goedef2b84bb2006-06-04 20:22:24 +020028#include <linux/init.h>
29#include <linux/slab.h>
30#include <linux/jiffies.h>
31#include <linux/mutex.h>
32#include <linux/err.h>
Hans de Goedefaf9b612006-08-25 10:24:20 +020033#include <linux/delay.h>
Hans de Goedef2b84bb2006-06-04 20:22:24 +020034#include <linux/platform_device.h>
35#include <linux/hwmon.h>
36#include <linux/hwmon-sysfs.h>
Hans de Goedec182f5b2007-07-10 17:09:57 +020037#include <linux/dmi.h>
H Hartley Sweeten6055fae2009-09-15 17:18:13 +020038#include <linux/io.h>
Hans de Goedef2b84bb2006-06-04 20:22:24 +020039
40/* Banks */
41#define ABIT_UGURU_ALARM_BANK 0x20 /* 1x 3 bytes */
42#define ABIT_UGURU_SENSOR_BANK1 0x21 /* 16x volt and temp */
43#define ABIT_UGURU_FAN_PWM 0x24 /* 3x 5 bytes */
44#define ABIT_UGURU_SENSOR_BANK2 0x26 /* fans */
Hans de Goedea2392e02006-06-04 20:23:01 +020045/* max nr of sensors in bank1, a bank1 sensor can be in, temp or nc */
46#define ABIT_UGURU_MAX_BANK1_SENSORS 16
Guenter Roeck1bd385d2012-01-14 12:30:52 -080047/*
48 * Warning if you increase one of the 2 MAX defines below to 10 or higher you
49 * should adjust the belonging _NAMES_LENGTH macro for the 2 digit number!
50 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +020051/* max nr of sensors in bank2, currently mb's with max 6 fans are known */
52#define ABIT_UGURU_MAX_BANK2_SENSORS 6
53/* max nr of pwm outputs, currently mb's with max 5 pwm outputs are known */
54#define ABIT_UGURU_MAX_PWMS 5
55/* uGuru sensor bank 1 flags */ /* Alarm if: */
56#define ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE 0x01 /* temp over warn */
57#define ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE 0x02 /* volt over max */
58#define ABIT_UGURU_VOLT_LOW_ALARM_ENABLE 0x04 /* volt under min */
59#define ABIT_UGURU_TEMP_HIGH_ALARM_FLAG 0x10 /* temp is over warn */
60#define ABIT_UGURU_VOLT_HIGH_ALARM_FLAG 0x20 /* volt is over max */
61#define ABIT_UGURU_VOLT_LOW_ALARM_FLAG 0x40 /* volt is under min */
62/* uGuru sensor bank 2 flags */ /* Alarm if: */
63#define ABIT_UGURU_FAN_LOW_ALARM_ENABLE 0x01 /* fan under min */
64/* uGuru sensor bank common flags */
65#define ABIT_UGURU_BEEP_ENABLE 0x08 /* beep if alarm */
66#define ABIT_UGURU_SHUTDOWN_ENABLE 0x80 /* shutdown if alarm */
67/* uGuru fan PWM (speed control) flags */
68#define ABIT_UGURU_FAN_PWM_ENABLE 0x80 /* enable speed control */
69/* Values used for conversion */
70#define ABIT_UGURU_FAN_MAX 15300 /* RPM */
71/* Bank1 sensor types */
72#define ABIT_UGURU_IN_SENSOR 0
73#define ABIT_UGURU_TEMP_SENSOR 1
74#define ABIT_UGURU_NC 2
Guenter Roeck1bd385d2012-01-14 12:30:52 -080075/*
76 * In many cases we need to wait for the uGuru to reach a certain status, most
77 * of the time it will reach this status within 30 - 90 ISA reads, and thus we
78 * can best busy wait. This define gives the total amount of reads to try.
79 */
Hans de Goedefaf9b612006-08-25 10:24:20 +020080#define ABIT_UGURU_WAIT_TIMEOUT 125
Guenter Roeck1bd385d2012-01-14 12:30:52 -080081/*
82 * However sometimes older versions of the uGuru seem to be distracted and they
83 * do not respond for a long time. To handle this we sleep before each of the
84 * last ABIT_UGURU_WAIT_TIMEOUT_SLEEP tries.
85 */
Hans de Goedefaf9b612006-08-25 10:24:20 +020086#define ABIT_UGURU_WAIT_TIMEOUT_SLEEP 5
Guenter Roeck1bd385d2012-01-14 12:30:52 -080087/*
88 * Normally all expected status in abituguru_ready, are reported after the
89 * first read, but sometimes not and we need to poll.
90 */
Hans de Goedefaf9b612006-08-25 10:24:20 +020091#define ABIT_UGURU_READY_TIMEOUT 5
Hans de Goedef2b84bb2006-06-04 20:22:24 +020092/* Maximum 3 retries on timedout reads/writes, delay 200 ms before retrying */
93#define ABIT_UGURU_MAX_RETRIES 3
94#define ABIT_UGURU_RETRY_DELAY (HZ/5)
Hans de Goedea2392e02006-06-04 20:23:01 +020095/* Maximum 2 timeouts in abituguru_update_device, iow 3 in a row is an error */
Hans de Goedef2b84bb2006-06-04 20:22:24 +020096#define ABIT_UGURU_MAX_TIMEOUTS 2
Hans de Goedea2392e02006-06-04 20:23:01 +020097/* utility macros */
98#define ABIT_UGURU_NAME "abituguru"
99#define ABIT_UGURU_DEBUG(level, format, arg...) \
100 if (level <= verbose) \
101 printk(KERN_DEBUG ABIT_UGURU_NAME ": " format , ## arg)
102/* Macros to help calculate the sysfs_names array length */
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800103/*
104 * sum of strlen of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0,
105 * in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0
106 */
Hans de Goedea2392e02006-06-04 20:23:01 +0200107#define ABITUGURU_IN_NAMES_LENGTH (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14)
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800108/*
109 * sum of strlen of: temp??_input\0, temp??_max\0, temp??_crit\0,
110 * temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0
111 */
Hans de Goedea2392e02006-06-04 20:23:01 +0200112#define ABITUGURU_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16)
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800113/*
114 * sum of strlen of: fan?_input\0, fan?_min\0, fan?_alarm\0,
115 * fan?_alarm_enable\0, fan?_beep\0, fan?_shutdown\0
116 */
Hans de Goedea2392e02006-06-04 20:23:01 +0200117#define ABITUGURU_FAN_NAMES_LENGTH (11 + 9 + 11 + 18 + 10 + 14)
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800118/*
119 * sum of strlen of: pwm?_enable\0, pwm?_auto_channels_temp\0,
120 * pwm?_auto_point{1,2}_pwm\0, pwm?_auto_point{1,2}_temp\0
121 */
Hans de Goedea2392e02006-06-04 20:23:01 +0200122#define ABITUGURU_PWM_NAMES_LENGTH (12 + 24 + 2 * 21 + 2 * 22)
123/* IN_NAMES_LENGTH > TEMP_NAMES_LENGTH so assume all bank1 sensors are in */
124#define ABITUGURU_SYSFS_NAMES_LENGTH ( \
125 ABIT_UGURU_MAX_BANK1_SENSORS * ABITUGURU_IN_NAMES_LENGTH + \
126 ABIT_UGURU_MAX_BANK2_SENSORS * ABITUGURU_FAN_NAMES_LENGTH + \
127 ABIT_UGURU_MAX_PWMS * ABITUGURU_PWM_NAMES_LENGTH)
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200128
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800129/*
130 * All the macros below are named identical to the oguru and oguru2 programs
131 * reverse engineered by Olle Sandberg, hence the names might not be 100%
132 * logical. I could come up with better names, but I prefer keeping the names
133 * identical so that this driver can be compared with his work more easily.
134 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200135/* Two i/o-ports are used by uGuru */
136#define ABIT_UGURU_BASE 0x00E0
137/* Used to tell uGuru what to read and to read the actual data */
138#define ABIT_UGURU_CMD 0x00
139/* Mostly used to check if uGuru is busy */
140#define ABIT_UGURU_DATA 0x04
141#define ABIT_UGURU_REGION_LENGTH 5
142/* uGuru status' */
143#define ABIT_UGURU_STATUS_WRITE 0x00 /* Ready to be written */
144#define ABIT_UGURU_STATUS_READ 0x01 /* Ready to be read */
145#define ABIT_UGURU_STATUS_INPUT 0x08 /* More input */
146#define ABIT_UGURU_STATUS_READY 0x09 /* Ready to be written */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200147
148/* Constants */
149/* in (Volt) sensors go up to 3494 mV, temp to 255000 millidegrees Celsius */
150static const int abituguru_bank1_max_value[2] = { 3494, 255000 };
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800151/*
152 * Min / Max allowed values for sensor2 (fan) alarm threshold, these values
153 * correspond to 300-3000 RPM
154 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200155static const u8 abituguru_bank2_min_threshold = 5;
156static const u8 abituguru_bank2_max_threshold = 50;
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800157/*
158 * Register 0 is a bitfield, 1 and 2 are pwm settings (255 = 100%), 3 and 4
159 * are temperature trip points.
160 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200161static const int abituguru_pwm_settings_multiplier[5] = { 0, 1, 1, 1000, 1000 };
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800162/*
163 * Min / Max allowed values for pwm_settings. Note: pwm1 (CPU fan) is a
164 * special case the minium allowed pwm% setting for this is 30% (77) on
165 * some MB's this special case is handled in the code!
166 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200167static const u8 abituguru_pwm_min[5] = { 0, 170, 170, 25, 25 };
168static const u8 abituguru_pwm_max[5] = { 0, 255, 255, 75, 75 };
169
170
171/* Insmod parameters */
Rusty Russell90ab5ee2012-01-13 09:32:20 +1030172static bool force;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200173module_param(force, bool, 0);
174MODULE_PARM_DESC(force, "Set to one to force detection.");
Hans de Goede9b2ad122006-07-05 18:07:49 +0200175static int bank1_types[ABIT_UGURU_MAX_BANK1_SENSORS] = { -1, -1, -1, -1, -1,
176 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 };
177module_param_array(bank1_types, int, NULL, 0);
178MODULE_PARM_DESC(bank1_types, "Bank1 sensortype autodetection override:\n"
179 " -1 autodetect\n"
180 " 0 volt sensor\n"
181 " 1 temp sensor\n"
182 " 2 not connected");
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200183static int fan_sensors;
184module_param(fan_sensors, int, 0);
185MODULE_PARM_DESC(fan_sensors, "Number of fan sensors on the uGuru "
186 "(0 = autodetect)");
187static int pwms;
188module_param(pwms, int, 0);
189MODULE_PARM_DESC(pwms, "Number of PWMs on the uGuru "
190 "(0 = autodetect)");
191
192/* Default verbose is 2, since this driver is still in the testing phase */
193static int verbose = 2;
194module_param(verbose, int, 0644);
195MODULE_PARM_DESC(verbose, "How verbose should the driver be? (0-3):\n"
196 " 0 normal output\n"
197 " 1 + verbose error reporting\n"
198 " 2 + sensors type probing info\n"
199 " 3 + retryable error reporting");
200
201
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800202/*
203 * For the Abit uGuru, we need to keep some data in memory.
204 * The structure is dynamically allocated, at the same time when a new
205 * abituguru device is allocated.
206 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200207struct abituguru_data {
Tony Jones1beeffe2007-08-20 13:46:20 -0700208 struct device *hwmon_dev; /* hwmon registered device */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200209 struct mutex update_lock; /* protect access to data and uGuru */
210 unsigned long last_updated; /* In jiffies */
211 unsigned short addr; /* uguru base address */
212 char uguru_ready; /* is the uguru in ready state? */
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800213 unsigned char update_timeouts; /*
214 * number of update timeouts since last
215 * successful update
216 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200217
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800218 /*
219 * The sysfs attr and their names are generated automatically, for bank1
220 * we cannot use a predefined array because we don't know beforehand
221 * of a sensor is a volt or a temp sensor, for bank2 and the pwms its
222 * easier todo things the same way. For in sensors we have 9 (temp 7)
223 * sysfs entries per sensor, for bank2 and pwms 6.
224 */
Hans de Goedea2392e02006-06-04 20:23:01 +0200225 struct sensor_device_attribute_2 sysfs_attr[
226 ABIT_UGURU_MAX_BANK1_SENSORS * 9 +
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200227 ABIT_UGURU_MAX_BANK2_SENSORS * 6 + ABIT_UGURU_MAX_PWMS * 6];
Hans de Goedea2392e02006-06-04 20:23:01 +0200228 /* Buffer to store the dynamically generated sysfs names */
229 char sysfs_names[ABITUGURU_SYSFS_NAMES_LENGTH];
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200230
231 /* Bank 1 data */
Hans de Goedea2392e02006-06-04 20:23:01 +0200232 /* number of and addresses of [0] in, [1] temp sensors */
233 u8 bank1_sensors[2];
234 u8 bank1_address[2][ABIT_UGURU_MAX_BANK1_SENSORS];
235 u8 bank1_value[ABIT_UGURU_MAX_BANK1_SENSORS];
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800236 /*
237 * This array holds 3 entries per sensor for the bank 1 sensor settings
238 * (flags, min, max for voltage / flags, warn, shutdown for temp).
239 */
Hans de Goedea2392e02006-06-04 20:23:01 +0200240 u8 bank1_settings[ABIT_UGURU_MAX_BANK1_SENSORS][3];
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800241 /*
242 * Maximum value for each sensor used for scaling in mV/millidegrees
243 * Celsius.
244 */
Hans de Goedea2392e02006-06-04 20:23:01 +0200245 int bank1_max_value[ABIT_UGURU_MAX_BANK1_SENSORS];
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200246
247 /* Bank 2 data, ABIT_UGURU_MAX_BANK2_SENSORS entries for bank2 */
248 u8 bank2_sensors; /* actual number of bank2 sensors found */
249 u8 bank2_value[ABIT_UGURU_MAX_BANK2_SENSORS];
250 u8 bank2_settings[ABIT_UGURU_MAX_BANK2_SENSORS][2]; /* flags, min */
251
252 /* Alarms 2 bytes for bank1, 1 byte for bank2 */
253 u8 alarms[3];
254
255 /* Fan PWM (speed control) 5 bytes per PWM */
256 u8 pwms; /* actual number of pwms found */
257 u8 pwm_settings[ABIT_UGURU_MAX_PWMS][5];
258};
259
Joe Perches28ebfa12010-10-20 06:51:25 +0000260static const char *never_happen = "This should never happen.";
261static const char *report_this =
262 "Please report this to the abituguru maintainer (see MAINTAINERS)";
263
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200264/* wait till the uguru is in the specified state */
265static int abituguru_wait(struct abituguru_data *data, u8 state)
266{
267 int timeout = ABIT_UGURU_WAIT_TIMEOUT;
268
269 while (inb_p(data->addr + ABIT_UGURU_DATA) != state) {
270 timeout--;
271 if (timeout == 0)
272 return -EBUSY;
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800273 /*
274 * sleep a bit before our last few tries, see the comment on
275 * this where ABIT_UGURU_WAIT_TIMEOUT_SLEEP is defined.
276 */
Hans de Goedefaf9b612006-08-25 10:24:20 +0200277 if (timeout <= ABIT_UGURU_WAIT_TIMEOUT_SLEEP)
278 msleep(0);
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200279 }
280 return 0;
281}
282
283/* Put the uguru in ready for input state */
284static int abituguru_ready(struct abituguru_data *data)
285{
286 int timeout = ABIT_UGURU_READY_TIMEOUT;
287
288 if (data->uguru_ready)
289 return 0;
290
291 /* Reset? / Prepare for next read/write cycle */
292 outb(0x00, data->addr + ABIT_UGURU_DATA);
293
294 /* Wait till the uguru is ready */
295 if (abituguru_wait(data, ABIT_UGURU_STATUS_READY)) {
296 ABIT_UGURU_DEBUG(1,
297 "timeout exceeded waiting for ready state\n");
298 return -EIO;
299 }
300
301 /* Cmd port MUST be read now and should contain 0xAC */
302 while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) {
303 timeout--;
304 if (timeout == 0) {
305 ABIT_UGURU_DEBUG(1,
306 "CMD reg does not hold 0xAC after ready command\n");
307 return -EIO;
308 }
Hans de Goedefaf9b612006-08-25 10:24:20 +0200309 msleep(0);
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200310 }
311
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800312 /*
313 * After this the ABIT_UGURU_DATA port should contain
314 * ABIT_UGURU_STATUS_INPUT
315 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200316 timeout = ABIT_UGURU_READY_TIMEOUT;
317 while (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) {
318 timeout--;
319 if (timeout == 0) {
320 ABIT_UGURU_DEBUG(1,
321 "state != more input after ready command\n");
322 return -EIO;
323 }
Hans de Goedefaf9b612006-08-25 10:24:20 +0200324 msleep(0);
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200325 }
326
327 data->uguru_ready = 1;
328 return 0;
329}
330
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800331/*
332 * Send the bank and then sensor address to the uGuru for the next read/write
333 * cycle. This function gets called as the first part of a read/write by
334 * abituguru_read and abituguru_write. This function should never be
335 * called by any other function.
336 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200337static int abituguru_send_address(struct abituguru_data *data,
338 u8 bank_addr, u8 sensor_addr, int retries)
339{
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800340 /*
341 * assume the caller does error handling itself if it has not requested
342 * any retries, and thus be quiet.
343 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200344 int report_errors = retries;
345
346 for (;;) {
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800347 /*
348 * Make sure the uguru is ready and then send the bank address,
349 * after this the uguru is no longer "ready".
350 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200351 if (abituguru_ready(data) != 0)
352 return -EIO;
353 outb(bank_addr, data->addr + ABIT_UGURU_DATA);
354 data->uguru_ready = 0;
355
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800356 /*
357 * Wait till the uguru is ABIT_UGURU_STATUS_INPUT state again
358 * and send the sensor addr
359 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200360 if (abituguru_wait(data, ABIT_UGURU_STATUS_INPUT)) {
361 if (retries) {
362 ABIT_UGURU_DEBUG(3, "timeout exceeded "
363 "waiting for more input state, %d "
364 "tries remaining\n", retries);
365 set_current_state(TASK_UNINTERRUPTIBLE);
366 schedule_timeout(ABIT_UGURU_RETRY_DELAY);
367 retries--;
368 continue;
369 }
370 if (report_errors)
371 ABIT_UGURU_DEBUG(1, "timeout exceeded "
372 "waiting for more input state "
373 "(bank: %d)\n", (int)bank_addr);
374 return -EBUSY;
375 }
376 outb(sensor_addr, data->addr + ABIT_UGURU_CMD);
377 return 0;
378 }
379}
380
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800381/*
382 * Read count bytes from sensor sensor_addr in bank bank_addr and store the
383 * result in buf, retry the send address part of the read retries times.
384 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200385static int abituguru_read(struct abituguru_data *data,
386 u8 bank_addr, u8 sensor_addr, u8 *buf, int count, int retries)
387{
388 int i;
389
390 /* Send the address */
391 i = abituguru_send_address(data, bank_addr, sensor_addr, retries);
392 if (i)
393 return i;
394
395 /* And read the data */
396 for (i = 0; i < count; i++) {
397 if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) {
Hans de Goedefaf9b612006-08-25 10:24:20 +0200398 ABIT_UGURU_DEBUG(retries ? 1 : 3,
399 "timeout exceeded waiting for "
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200400 "read state (bank: %d, sensor: %d)\n",
401 (int)bank_addr, (int)sensor_addr);
402 break;
403 }
404 buf[i] = inb(data->addr + ABIT_UGURU_CMD);
405 }
406
407 /* Last put the chip back in ready state */
408 abituguru_ready(data);
409
410 return i;
411}
412
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800413/*
414 * Write count bytes from buf to sensor sensor_addr in bank bank_addr, the send
415 * address part of the write is always retried ABIT_UGURU_MAX_RETRIES times.
416 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200417static int abituguru_write(struct abituguru_data *data,
418 u8 bank_addr, u8 sensor_addr, u8 *buf, int count)
419{
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800420 /*
421 * We use the ready timeout as we have to wait for 0xAC just like the
422 * ready function
423 */
Hans de Goedefaf9b612006-08-25 10:24:20 +0200424 int i, timeout = ABIT_UGURU_READY_TIMEOUT;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200425
426 /* Send the address */
427 i = abituguru_send_address(data, bank_addr, sensor_addr,
428 ABIT_UGURU_MAX_RETRIES);
429 if (i)
430 return i;
431
432 /* And write the data */
433 for (i = 0; i < count; i++) {
434 if (abituguru_wait(data, ABIT_UGURU_STATUS_WRITE)) {
435 ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for "
436 "write state (bank: %d, sensor: %d)\n",
437 (int)bank_addr, (int)sensor_addr);
438 break;
439 }
440 outb(buf[i], data->addr + ABIT_UGURU_CMD);
441 }
442
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800443 /*
444 * Now we need to wait till the chip is ready to be read again,
445 * so that we can read 0xAC as confirmation that our write has
446 * succeeded.
447 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200448 if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) {
449 ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for read state "
450 "after write (bank: %d, sensor: %d)\n", (int)bank_addr,
451 (int)sensor_addr);
452 return -EIO;
453 }
454
455 /* Cmd port MUST be read now and should contain 0xAC */
Hans de Goedefaf9b612006-08-25 10:24:20 +0200456 while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) {
457 timeout--;
458 if (timeout == 0) {
459 ABIT_UGURU_DEBUG(1, "CMD reg does not hold 0xAC after "
460 "write (bank: %d, sensor: %d)\n",
461 (int)bank_addr, (int)sensor_addr);
462 return -EIO;
463 }
464 msleep(0);
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200465 }
466
467 /* Last put the chip back in ready state */
468 abituguru_ready(data);
469
470 return i;
471}
472
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800473/*
474 * Detect sensor type. Temp and Volt sensors are enabled with
475 * different masks and will ignore enable masks not meant for them.
476 * This enables us to test what kind of sensor we're dealing with.
477 * By setting the alarm thresholds so that we will always get an
478 * alarm for sensor type X and then enabling the sensor as sensor type
479 * X, if we then get an alarm it is a sensor of type X.
480 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200481static int __devinit
482abituguru_detect_bank1_sensor_type(struct abituguru_data *data,
483 u8 sensor_addr)
484{
Hans de Goedee432dc82007-06-18 22:59:34 +0200485 u8 val, test_flag, buf[3];
Hans de Goedefaf9b612006-08-25 10:24:20 +0200486 int i, ret = -ENODEV; /* error is the most common used retval :| */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200487
Hans de Goede9b2ad122006-07-05 18:07:49 +0200488 /* If overriden by the user return the user selected type */
489 if (bank1_types[sensor_addr] >= ABIT_UGURU_IN_SENSOR &&
490 bank1_types[sensor_addr] <= ABIT_UGURU_NC) {
491 ABIT_UGURU_DEBUG(2, "assuming sensor type %d for bank1 sensor "
492 "%d because of \"bank1_types\" module param\n",
493 bank1_types[sensor_addr], (int)sensor_addr);
494 return bank1_types[sensor_addr];
495 }
496
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200497 /* First read the sensor and the current settings */
498 if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, sensor_addr, &val,
499 1, ABIT_UGURU_MAX_RETRIES) != 1)
Hans de Goedea2392e02006-06-04 20:23:01 +0200500 return -ENODEV;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200501
502 /* Test val is sane / usable for sensor type detection. */
Hans de Goedee432dc82007-06-18 22:59:34 +0200503 if ((val < 10u) || (val > 250u)) {
Joe Perches28ebfa12010-10-20 06:51:25 +0000504 pr_warn("bank1-sensor: %d reading (%d) too close to limits, "
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200505 "unable to determine sensor type, skipping sensor\n",
506 (int)sensor_addr, (int)val);
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800507 /*
508 * assume no sensor is there for sensors for which we can't
509 * determine the sensor type because their reading is too close
510 * to their limits, this usually means no sensor is there.
511 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200512 return ABIT_UGURU_NC;
513 }
514
515 ABIT_UGURU_DEBUG(2, "testing bank1 sensor %d\n", (int)sensor_addr);
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800516 /*
517 * Volt sensor test, enable volt low alarm, set min value ridicously
518 * high, or vica versa if the reading is very high. If its a volt
519 * sensor this should always give us an alarm.
520 */
Hans de Goedee432dc82007-06-18 22:59:34 +0200521 if (val <= 240u) {
522 buf[0] = ABIT_UGURU_VOLT_LOW_ALARM_ENABLE;
523 buf[1] = 245;
524 buf[2] = 250;
525 test_flag = ABIT_UGURU_VOLT_LOW_ALARM_FLAG;
526 } else {
527 buf[0] = ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE;
528 buf[1] = 5;
529 buf[2] = 10;
530 test_flag = ABIT_UGURU_VOLT_HIGH_ALARM_FLAG;
531 }
532
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200533 if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr,
534 buf, 3) != 3)
Hans de Goedefaf9b612006-08-25 10:24:20 +0200535 goto abituguru_detect_bank1_sensor_type_exit;
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800536 /*
537 * Now we need 20 ms to give the uguru time to read the sensors
538 * and raise a voltage alarm
539 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200540 set_current_state(TASK_UNINTERRUPTIBLE);
541 schedule_timeout(HZ/50);
542 /* Check for alarm and check the alarm is a volt low alarm. */
543 if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3,
544 ABIT_UGURU_MAX_RETRIES) != 3)
Hans de Goedefaf9b612006-08-25 10:24:20 +0200545 goto abituguru_detect_bank1_sensor_type_exit;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200546 if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) {
547 if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1,
548 sensor_addr, buf, 3,
549 ABIT_UGURU_MAX_RETRIES) != 3)
Hans de Goedefaf9b612006-08-25 10:24:20 +0200550 goto abituguru_detect_bank1_sensor_type_exit;
Hans de Goedee432dc82007-06-18 22:59:34 +0200551 if (buf[0] & test_flag) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200552 ABIT_UGURU_DEBUG(2, " found volt sensor\n");
Hans de Goedefaf9b612006-08-25 10:24:20 +0200553 ret = ABIT_UGURU_IN_SENSOR;
554 goto abituguru_detect_bank1_sensor_type_exit;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200555 } else
556 ABIT_UGURU_DEBUG(2, " alarm raised during volt "
Hans de Goedee432dc82007-06-18 22:59:34 +0200557 "sensor test, but volt range flag not set\n");
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200558 } else
559 ABIT_UGURU_DEBUG(2, " alarm not raised during volt sensor "
560 "test\n");
561
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800562 /*
563 * Temp sensor test, enable sensor as a temp sensor, set beep value
564 * ridicously low (but not too low, otherwise uguru ignores it).
565 * If its a temp sensor this should always give us an alarm.
566 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200567 buf[0] = ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE;
568 buf[1] = 5;
569 buf[2] = 10;
570 if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr,
571 buf, 3) != 3)
Hans de Goedefaf9b612006-08-25 10:24:20 +0200572 goto abituguru_detect_bank1_sensor_type_exit;
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800573 /*
574 * Now we need 50 ms to give the uguru time to read the sensors
575 * and raise a temp alarm
576 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200577 set_current_state(TASK_UNINTERRUPTIBLE);
578 schedule_timeout(HZ/20);
579 /* Check for alarm and check the alarm is a temp high alarm. */
580 if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3,
581 ABIT_UGURU_MAX_RETRIES) != 3)
Hans de Goedefaf9b612006-08-25 10:24:20 +0200582 goto abituguru_detect_bank1_sensor_type_exit;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200583 if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) {
584 if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1,
585 sensor_addr, buf, 3,
586 ABIT_UGURU_MAX_RETRIES) != 3)
Hans de Goedefaf9b612006-08-25 10:24:20 +0200587 goto abituguru_detect_bank1_sensor_type_exit;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200588 if (buf[0] & ABIT_UGURU_TEMP_HIGH_ALARM_FLAG) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200589 ABIT_UGURU_DEBUG(2, " found temp sensor\n");
Hans de Goedefaf9b612006-08-25 10:24:20 +0200590 ret = ABIT_UGURU_TEMP_SENSOR;
591 goto abituguru_detect_bank1_sensor_type_exit;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200592 } else
593 ABIT_UGURU_DEBUG(2, " alarm raised during temp "
594 "sensor test, but temp high flag not set\n");
595 } else
596 ABIT_UGURU_DEBUG(2, " alarm not raised during temp sensor "
597 "test\n");
598
Hans de Goedefaf9b612006-08-25 10:24:20 +0200599 ret = ABIT_UGURU_NC;
600abituguru_detect_bank1_sensor_type_exit:
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800601 /*
602 * Restore original settings, failing here is really BAD, it has been
603 * reported that some BIOS-es hang when entering the uGuru menu with
604 * invalid settings present in the uGuru, so we try this 3 times.
605 */
Hans de Goedefaf9b612006-08-25 10:24:20 +0200606 for (i = 0; i < 3; i++)
607 if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2,
608 sensor_addr, data->bank1_settings[sensor_addr],
609 3) == 3)
610 break;
611 if (i == 3) {
Joe Perches28ebfa12010-10-20 06:51:25 +0000612 pr_err("Fatal error could not restore original settings. %s %s\n",
613 never_happen, report_this);
Hans de Goedea2392e02006-06-04 20:23:01 +0200614 return -ENODEV;
Hans de Goedefaf9b612006-08-25 10:24:20 +0200615 }
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200616 return ret;
617}
618
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800619/*
620 * These functions try to find out how many sensors there are in bank2 and how
621 * many pwms there are. The purpose of this is to make sure that we don't give
622 * the user the possibility to change settings for non-existent sensors / pwm.
623 * The uGuru will happily read / write whatever memory happens to be after the
624 * memory storing the PWM settings when reading/writing to a PWM which is not
625 * there. Notice even if we detect a PWM which doesn't exist we normally won't
626 * write to it, unless the user tries to change the settings.
627 *
628 * Although the uGuru allows reading (settings) from non existing bank2
629 * sensors, my version of the uGuru does seem to stop writing to them, the
630 * write function above aborts in this case with:
631 * "CMD reg does not hold 0xAC after write"
632 *
633 * Notice these 2 tests are non destructive iow read-only tests, otherwise
634 * they would defeat their purpose. Although for the bank2_sensors detection a
635 * read/write test would be feasible because of the reaction above, I've
636 * however opted to stay on the safe side.
637 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200638static void __devinit
639abituguru_detect_no_bank2_sensors(struct abituguru_data *data)
640{
641 int i;
642
Hans de Goede9b2ad122006-07-05 18:07:49 +0200643 if (fan_sensors > 0 && fan_sensors <= ABIT_UGURU_MAX_BANK2_SENSORS) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200644 data->bank2_sensors = fan_sensors;
645 ABIT_UGURU_DEBUG(2, "assuming %d fan sensors because of "
646 "\"fan_sensors\" module param\n",
647 (int)data->bank2_sensors);
648 return;
649 }
650
651 ABIT_UGURU_DEBUG(2, "detecting number of fan sensors\n");
652 for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) {
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800653 /*
654 * 0x89 are the known used bits:
655 * -0x80 enable shutdown
656 * -0x08 enable beep
657 * -0x01 enable alarm
658 * All other bits should be 0, but on some motherboards
659 * 0x40 (bit 6) is also high for some of the fans??
660 */
Hans de Goedeb7c06602006-06-04 20:24:11 +0200661 if (data->bank2_settings[i][0] & ~0xC9) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200662 ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem "
663 "to be a fan sensor: settings[0] = %02X\n",
664 i, (unsigned int)data->bank2_settings[i][0]);
665 break;
666 }
667
668 /* check if the threshold is within the allowed range */
669 if (data->bank2_settings[i][1] <
670 abituguru_bank2_min_threshold) {
671 ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem "
672 "to be a fan sensor: the threshold (%d) is "
673 "below the minimum (%d)\n", i,
674 (int)data->bank2_settings[i][1],
675 (int)abituguru_bank2_min_threshold);
676 break;
677 }
678 if (data->bank2_settings[i][1] >
679 abituguru_bank2_max_threshold) {
680 ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem "
681 "to be a fan sensor: the threshold (%d) is "
682 "above the maximum (%d)\n", i,
683 (int)data->bank2_settings[i][1],
684 (int)abituguru_bank2_max_threshold);
685 break;
686 }
687 }
688
689 data->bank2_sensors = i;
690 ABIT_UGURU_DEBUG(2, " found: %d fan sensors\n",
691 (int)data->bank2_sensors);
692}
693
694static void __devinit
695abituguru_detect_no_pwms(struct abituguru_data *data)
696{
697 int i, j;
698
Hans de Goede9b2ad122006-07-05 18:07:49 +0200699 if (pwms > 0 && pwms <= ABIT_UGURU_MAX_PWMS) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200700 data->pwms = pwms;
701 ABIT_UGURU_DEBUG(2, "assuming %d PWM outputs because of "
702 "\"pwms\" module param\n", (int)data->pwms);
703 return;
704 }
705
706 ABIT_UGURU_DEBUG(2, "detecting number of PWM outputs\n");
707 for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) {
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800708 /*
709 * 0x80 is the enable bit and the low
710 * nibble is which temp sensor to use,
711 * the other bits should be 0
712 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200713 if (data->pwm_settings[i][0] & ~0x8F) {
714 ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem "
715 "to be a pwm channel: settings[0] = %02X\n",
716 i, (unsigned int)data->pwm_settings[i][0]);
717 break;
718 }
719
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800720 /*
721 * the low nibble must correspond to one of the temp sensors
722 * we've found
723 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200724 for (j = 0; j < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR];
725 j++) {
726 if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][j] ==
727 (data->pwm_settings[i][0] & 0x0F))
728 break;
729 }
730 if (j == data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) {
731 ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem "
732 "to be a pwm channel: %d is not a valid temp "
733 "sensor address\n", i,
734 data->pwm_settings[i][0] & 0x0F);
735 break;
736 }
737
738 /* check if all other settings are within the allowed range */
739 for (j = 1; j < 5; j++) {
740 u8 min;
741 /* special case pwm1 min pwm% */
742 if ((i == 0) && ((j == 1) || (j == 2)))
743 min = 77;
744 else
745 min = abituguru_pwm_min[j];
746 if (data->pwm_settings[i][j] < min) {
747 ABIT_UGURU_DEBUG(2, " pwm channel %d does "
748 "not seem to be a pwm channel: "
749 "setting %d (%d) is below the minimum "
750 "value (%d)\n", i, j,
751 (int)data->pwm_settings[i][j],
752 (int)min);
753 goto abituguru_detect_no_pwms_exit;
754 }
755 if (data->pwm_settings[i][j] > abituguru_pwm_max[j]) {
756 ABIT_UGURU_DEBUG(2, " pwm channel %d does "
757 "not seem to be a pwm channel: "
758 "setting %d (%d) is above the maximum "
759 "value (%d)\n", i, j,
760 (int)data->pwm_settings[i][j],
761 (int)abituguru_pwm_max[j]);
762 goto abituguru_detect_no_pwms_exit;
763 }
764 }
765
766 /* check that min temp < max temp and min pwm < max pwm */
767 if (data->pwm_settings[i][1] >= data->pwm_settings[i][2]) {
768 ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem "
769 "to be a pwm channel: min pwm (%d) >= "
770 "max pwm (%d)\n", i,
771 (int)data->pwm_settings[i][1],
772 (int)data->pwm_settings[i][2]);
773 break;
774 }
775 if (data->pwm_settings[i][3] >= data->pwm_settings[i][4]) {
776 ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem "
777 "to be a pwm channel: min temp (%d) >= "
778 "max temp (%d)\n", i,
779 (int)data->pwm_settings[i][3],
780 (int)data->pwm_settings[i][4]);
781 break;
782 }
783 }
784
785abituguru_detect_no_pwms_exit:
786 data->pwms = i;
787 ABIT_UGURU_DEBUG(2, " found: %d PWM outputs\n", (int)data->pwms);
788}
789
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800790/*
791 * Following are the sysfs callback functions. These functions expect:
792 * sensor_device_attribute_2->index: sensor address/offset in the bank
793 * sensor_device_attribute_2->nr: register offset, bitmask or NA.
794 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200795static struct abituguru_data *abituguru_update_device(struct device *dev);
796
797static ssize_t show_bank1_value(struct device *dev,
798 struct device_attribute *devattr, char *buf)
799{
800 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
801 struct abituguru_data *data = abituguru_update_device(dev);
802 if (!data)
803 return -EIO;
804 return sprintf(buf, "%d\n", (data->bank1_value[attr->index] *
805 data->bank1_max_value[attr->index] + 128) / 255);
806}
807
808static ssize_t show_bank1_setting(struct device *dev,
809 struct device_attribute *devattr, char *buf)
810{
811 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
812 struct abituguru_data *data = dev_get_drvdata(dev);
813 return sprintf(buf, "%d\n",
814 (data->bank1_settings[attr->index][attr->nr] *
815 data->bank1_max_value[attr->index] + 128) / 255);
816}
817
818static ssize_t show_bank2_value(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 return sprintf(buf, "%d\n", (data->bank2_value[attr->index] *
826 ABIT_UGURU_FAN_MAX + 128) / 255);
827}
828
829static ssize_t show_bank2_setting(struct device *dev,
830 struct device_attribute *devattr, char *buf)
831{
832 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
833 struct abituguru_data *data = dev_get_drvdata(dev);
834 return sprintf(buf, "%d\n",
835 (data->bank2_settings[attr->index][attr->nr] *
836 ABIT_UGURU_FAN_MAX + 128) / 255);
837}
838
839static ssize_t store_bank1_setting(struct device *dev, struct device_attribute
840 *devattr, const char *buf, size_t count)
841{
842 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
843 struct abituguru_data *data = dev_get_drvdata(dev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800844 unsigned long val;
845 ssize_t ret;
846
847 ret = kstrtoul(buf, 10, &val);
848 if (ret)
849 return ret;
850
851 ret = count;
852 val = (val * 255 + data->bank1_max_value[attr->index] / 2) /
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200853 data->bank1_max_value[attr->index];
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800854 if (val > 255)
855 return -EINVAL;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200856
857 mutex_lock(&data->update_lock);
858 if (data->bank1_settings[attr->index][attr->nr] != val) {
859 u8 orig_val = data->bank1_settings[attr->index][attr->nr];
860 data->bank1_settings[attr->index][attr->nr] = val;
861 if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2,
862 attr->index, data->bank1_settings[attr->index],
863 3) <= attr->nr) {
864 data->bank1_settings[attr->index][attr->nr] = orig_val;
865 ret = -EIO;
866 }
867 }
868 mutex_unlock(&data->update_lock);
869 return ret;
870}
871
872static ssize_t store_bank2_setting(struct device *dev, struct device_attribute
873 *devattr, const char *buf, size_t count)
874{
875 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
876 struct abituguru_data *data = dev_get_drvdata(dev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800877 unsigned long val;
878 ssize_t ret;
879
880 ret = kstrtoul(buf, 10, &val);
881 if (ret)
882 return ret;
883
884 ret = count;
885 val = (val * 255 + ABIT_UGURU_FAN_MAX / 2) / ABIT_UGURU_FAN_MAX;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200886
887 /* this check can be done before taking the lock */
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800888 if (val < abituguru_bank2_min_threshold ||
889 val > abituguru_bank2_max_threshold)
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200890 return -EINVAL;
891
892 mutex_lock(&data->update_lock);
893 if (data->bank2_settings[attr->index][attr->nr] != val) {
894 u8 orig_val = data->bank2_settings[attr->index][attr->nr];
895 data->bank2_settings[attr->index][attr->nr] = val;
896 if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK2 + 2,
897 attr->index, data->bank2_settings[attr->index],
898 2) <= attr->nr) {
899 data->bank2_settings[attr->index][attr->nr] = orig_val;
900 ret = -EIO;
901 }
902 }
903 mutex_unlock(&data->update_lock);
904 return ret;
905}
906
907static ssize_t show_bank1_alarm(struct device *dev,
908 struct device_attribute *devattr, char *buf)
909{
910 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
911 struct abituguru_data *data = abituguru_update_device(dev);
912 if (!data)
913 return -EIO;
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800914 /*
915 * See if the alarm bit for this sensor is set, and if the
916 * alarm matches the type of alarm we're looking for (for volt
917 * it can be either low or high). The type is stored in a few
918 * readonly bits in the settings part of the relevant sensor.
919 * The bitmask of the type is passed to us in attr->nr.
920 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200921 if ((data->alarms[attr->index / 8] & (0x01 << (attr->index % 8))) &&
922 (data->bank1_settings[attr->index][0] & attr->nr))
923 return sprintf(buf, "1\n");
924 else
925 return sprintf(buf, "0\n");
926}
927
928static ssize_t show_bank2_alarm(struct device *dev,
929 struct device_attribute *devattr, char *buf)
930{
931 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
932 struct abituguru_data *data = abituguru_update_device(dev);
933 if (!data)
934 return -EIO;
935 if (data->alarms[2] & (0x01 << attr->index))
936 return sprintf(buf, "1\n");
937 else
938 return sprintf(buf, "0\n");
939}
940
941static ssize_t show_bank1_mask(struct device *dev,
942 struct device_attribute *devattr, char *buf)
943{
944 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
945 struct abituguru_data *data = dev_get_drvdata(dev);
946 if (data->bank1_settings[attr->index][0] & attr->nr)
947 return sprintf(buf, "1\n");
948 else
949 return sprintf(buf, "0\n");
950}
951
952static ssize_t show_bank2_mask(struct device *dev,
953 struct device_attribute *devattr, char *buf)
954{
955 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
956 struct abituguru_data *data = dev_get_drvdata(dev);
957 if (data->bank2_settings[attr->index][0] & attr->nr)
958 return sprintf(buf, "1\n");
959 else
960 return sprintf(buf, "0\n");
961}
962
963static ssize_t store_bank1_mask(struct device *dev,
964 struct device_attribute *devattr, const char *buf, size_t count)
965{
966 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
967 struct abituguru_data *data = dev_get_drvdata(dev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800968 ssize_t ret;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200969 u8 orig_val;
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800970 unsigned long mask;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200971
Guenter Roeck1bd385d2012-01-14 12:30:52 -0800972 ret = kstrtoul(buf, 10, &mask);
973 if (ret)
974 return ret;
975
976 ret = count;
Hans de Goedef2b84bb2006-06-04 20:22:24 +0200977 mutex_lock(&data->update_lock);
978 orig_val = data->bank1_settings[attr->index][0];
979
980 if (mask)
981 data->bank1_settings[attr->index][0] |= attr->nr;
982 else
983 data->bank1_settings[attr->index][0] &= ~attr->nr;
984
985 if ((data->bank1_settings[attr->index][0] != orig_val) &&
986 (abituguru_write(data,
987 ABIT_UGURU_SENSOR_BANK1 + 2, attr->index,
988 data->bank1_settings[attr->index], 3) < 1)) {
989 data->bank1_settings[attr->index][0] = orig_val;
990 ret = -EIO;
991 }
992 mutex_unlock(&data->update_lock);
993 return ret;
994}
995
996static ssize_t store_bank2_mask(struct device *dev,
997 struct device_attribute *devattr, const char *buf, size_t count)
998{
999 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
1000 struct abituguru_data *data = dev_get_drvdata(dev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001001 ssize_t ret;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001002 u8 orig_val;
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001003 unsigned long mask;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001004
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001005 ret = kstrtoul(buf, 10, &mask);
1006 if (ret)
1007 return ret;
1008
1009 ret = count;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001010 mutex_lock(&data->update_lock);
1011 orig_val = data->bank2_settings[attr->index][0];
1012
1013 if (mask)
1014 data->bank2_settings[attr->index][0] |= attr->nr;
1015 else
1016 data->bank2_settings[attr->index][0] &= ~attr->nr;
1017
1018 if ((data->bank2_settings[attr->index][0] != orig_val) &&
1019 (abituguru_write(data,
1020 ABIT_UGURU_SENSOR_BANK2 + 2, attr->index,
1021 data->bank2_settings[attr->index], 2) < 1)) {
1022 data->bank2_settings[attr->index][0] = orig_val;
1023 ret = -EIO;
1024 }
1025 mutex_unlock(&data->update_lock);
1026 return ret;
1027}
1028
1029/* Fan PWM (speed control) */
1030static ssize_t show_pwm_setting(struct device *dev,
1031 struct device_attribute *devattr, char *buf)
1032{
1033 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
1034 struct abituguru_data *data = dev_get_drvdata(dev);
1035 return sprintf(buf, "%d\n", data->pwm_settings[attr->index][attr->nr] *
1036 abituguru_pwm_settings_multiplier[attr->nr]);
1037}
1038
1039static ssize_t store_pwm_setting(struct device *dev, struct device_attribute
1040 *devattr, const char *buf, size_t count)
1041{
1042 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
1043 struct abituguru_data *data = dev_get_drvdata(dev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001044 u8 min;
1045 unsigned long val;
1046 ssize_t ret;
1047
1048 ret = kstrtoul(buf, 10, &val);
1049 if (ret)
1050 return ret;
1051
1052 ret = count;
1053 val = (val + abituguru_pwm_settings_multiplier[attr->nr] / 2) /
1054 abituguru_pwm_settings_multiplier[attr->nr];
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001055
1056 /* special case pwm1 min pwm% */
1057 if ((attr->index == 0) && ((attr->nr == 1) || (attr->nr == 2)))
1058 min = 77;
1059 else
1060 min = abituguru_pwm_min[attr->nr];
1061
1062 /* this check can be done before taking the lock */
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001063 if (val < min || val > abituguru_pwm_max[attr->nr])
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001064 return -EINVAL;
1065
1066 mutex_lock(&data->update_lock);
1067 /* this check needs to be done after taking the lock */
1068 if ((attr->nr & 1) &&
1069 (val >= data->pwm_settings[attr->index][attr->nr + 1]))
1070 ret = -EINVAL;
1071 else if (!(attr->nr & 1) &&
1072 (val <= data->pwm_settings[attr->index][attr->nr - 1]))
1073 ret = -EINVAL;
1074 else if (data->pwm_settings[attr->index][attr->nr] != val) {
1075 u8 orig_val = data->pwm_settings[attr->index][attr->nr];
1076 data->pwm_settings[attr->index][attr->nr] = val;
1077 if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1,
1078 attr->index, data->pwm_settings[attr->index],
1079 5) <= attr->nr) {
1080 data->pwm_settings[attr->index][attr->nr] =
1081 orig_val;
1082 ret = -EIO;
1083 }
1084 }
1085 mutex_unlock(&data->update_lock);
1086 return ret;
1087}
1088
1089static ssize_t show_pwm_sensor(struct device *dev,
1090 struct device_attribute *devattr, char *buf)
1091{
1092 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
1093 struct abituguru_data *data = dev_get_drvdata(dev);
1094 int i;
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001095 /*
1096 * We need to walk to the temp sensor addresses to find what
1097 * the userspace id of the configured temp sensor is.
1098 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001099 for (i = 0; i < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; i++)
1100 if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][i] ==
1101 (data->pwm_settings[attr->index][0] & 0x0F))
1102 return sprintf(buf, "%d\n", i+1);
1103
1104 return -ENXIO;
1105}
1106
1107static ssize_t store_pwm_sensor(struct device *dev, struct device_attribute
1108 *devattr, const char *buf, size_t count)
1109{
1110 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
1111 struct abituguru_data *data = dev_get_drvdata(dev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001112 ssize_t ret;
1113 unsigned long val;
1114 u8 orig_val;
1115 u8 address;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001116
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001117 ret = kstrtoul(buf, 10, &val);
1118 if (ret)
1119 return ret;
1120
1121 if (val == 0 || val > data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR])
1122 return -EINVAL;
1123
1124 val -= 1;
1125 ret = count;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001126 mutex_lock(&data->update_lock);
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001127 orig_val = data->pwm_settings[attr->index][0];
1128 address = data->bank1_address[ABIT_UGURU_TEMP_SENSOR][val];
1129 data->pwm_settings[attr->index][0] &= 0xF0;
1130 data->pwm_settings[attr->index][0] |= address;
1131 if (data->pwm_settings[attr->index][0] != orig_val) {
1132 if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, attr->index,
1133 data->pwm_settings[attr->index], 5) < 1) {
1134 data->pwm_settings[attr->index][0] = orig_val;
1135 ret = -EIO;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001136 }
1137 }
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001138 mutex_unlock(&data->update_lock);
1139 return ret;
1140}
1141
1142static ssize_t show_pwm_enable(struct device *dev,
1143 struct device_attribute *devattr, char *buf)
1144{
1145 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
1146 struct abituguru_data *data = dev_get_drvdata(dev);
1147 int res = 0;
1148 if (data->pwm_settings[attr->index][0] & ABIT_UGURU_FAN_PWM_ENABLE)
1149 res = 2;
1150 return sprintf(buf, "%d\n", res);
1151}
1152
1153static ssize_t store_pwm_enable(struct device *dev, struct device_attribute
1154 *devattr, const char *buf, size_t count)
1155{
1156 struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
1157 struct abituguru_data *data = dev_get_drvdata(dev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001158 u8 orig_val;
1159 ssize_t ret;
1160 unsigned long user_val;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001161
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001162 ret = kstrtoul(buf, 10, &user_val);
1163 if (ret)
1164 return ret;
1165
1166 ret = count;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001167 mutex_lock(&data->update_lock);
1168 orig_val = data->pwm_settings[attr->index][0];
1169 switch (user_val) {
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001170 case 0:
1171 data->pwm_settings[attr->index][0] &=
1172 ~ABIT_UGURU_FAN_PWM_ENABLE;
1173 break;
1174 case 2:
1175 data->pwm_settings[attr->index][0] |= ABIT_UGURU_FAN_PWM_ENABLE;
1176 break;
1177 default:
1178 ret = -EINVAL;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001179 }
1180 if ((data->pwm_settings[attr->index][0] != orig_val) &&
1181 (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1,
1182 attr->index, data->pwm_settings[attr->index],
1183 5) < 1)) {
1184 data->pwm_settings[attr->index][0] = orig_val;
1185 ret = -EIO;
1186 }
1187 mutex_unlock(&data->update_lock);
1188 return ret;
1189}
1190
1191static ssize_t show_name(struct device *dev,
1192 struct device_attribute *devattr, char *buf)
1193{
1194 return sprintf(buf, "%s\n", ABIT_UGURU_NAME);
1195}
1196
1197/* Sysfs attr templates, the real entries are generated automatically. */
1198static const
1199struct sensor_device_attribute_2 abituguru_sysfs_bank1_templ[2][9] = {
1200 {
1201 SENSOR_ATTR_2(in%d_input, 0444, show_bank1_value, NULL, 0, 0),
1202 SENSOR_ATTR_2(in%d_min, 0644, show_bank1_setting,
1203 store_bank1_setting, 1, 0),
1204 SENSOR_ATTR_2(in%d_min_alarm, 0444, show_bank1_alarm, NULL,
1205 ABIT_UGURU_VOLT_LOW_ALARM_FLAG, 0),
1206 SENSOR_ATTR_2(in%d_max, 0644, show_bank1_setting,
1207 store_bank1_setting, 2, 0),
1208 SENSOR_ATTR_2(in%d_max_alarm, 0444, show_bank1_alarm, NULL,
1209 ABIT_UGURU_VOLT_HIGH_ALARM_FLAG, 0),
1210 SENSOR_ATTR_2(in%d_beep, 0644, show_bank1_mask,
1211 store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0),
1212 SENSOR_ATTR_2(in%d_shutdown, 0644, show_bank1_mask,
1213 store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0),
1214 SENSOR_ATTR_2(in%d_min_alarm_enable, 0644, show_bank1_mask,
1215 store_bank1_mask, ABIT_UGURU_VOLT_LOW_ALARM_ENABLE, 0),
1216 SENSOR_ATTR_2(in%d_max_alarm_enable, 0644, show_bank1_mask,
1217 store_bank1_mask, ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE, 0),
1218 }, {
1219 SENSOR_ATTR_2(temp%d_input, 0444, show_bank1_value, NULL, 0, 0),
1220 SENSOR_ATTR_2(temp%d_alarm, 0444, show_bank1_alarm, NULL,
1221 ABIT_UGURU_TEMP_HIGH_ALARM_FLAG, 0),
1222 SENSOR_ATTR_2(temp%d_max, 0644, show_bank1_setting,
1223 store_bank1_setting, 1, 0),
1224 SENSOR_ATTR_2(temp%d_crit, 0644, show_bank1_setting,
1225 store_bank1_setting, 2, 0),
1226 SENSOR_ATTR_2(temp%d_beep, 0644, show_bank1_mask,
1227 store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0),
1228 SENSOR_ATTR_2(temp%d_shutdown, 0644, show_bank1_mask,
1229 store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0),
1230 SENSOR_ATTR_2(temp%d_alarm_enable, 0644, show_bank1_mask,
1231 store_bank1_mask, ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE, 0),
1232 }
1233};
1234
1235static const struct sensor_device_attribute_2 abituguru_sysfs_fan_templ[6] = {
1236 SENSOR_ATTR_2(fan%d_input, 0444, show_bank2_value, NULL, 0, 0),
1237 SENSOR_ATTR_2(fan%d_alarm, 0444, show_bank2_alarm, NULL, 0, 0),
1238 SENSOR_ATTR_2(fan%d_min, 0644, show_bank2_setting,
1239 store_bank2_setting, 1, 0),
1240 SENSOR_ATTR_2(fan%d_beep, 0644, show_bank2_mask,
1241 store_bank2_mask, ABIT_UGURU_BEEP_ENABLE, 0),
1242 SENSOR_ATTR_2(fan%d_shutdown, 0644, show_bank2_mask,
1243 store_bank2_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0),
1244 SENSOR_ATTR_2(fan%d_alarm_enable, 0644, show_bank2_mask,
1245 store_bank2_mask, ABIT_UGURU_FAN_LOW_ALARM_ENABLE, 0),
1246};
1247
1248static const struct sensor_device_attribute_2 abituguru_sysfs_pwm_templ[6] = {
1249 SENSOR_ATTR_2(pwm%d_enable, 0644, show_pwm_enable,
1250 store_pwm_enable, 0, 0),
1251 SENSOR_ATTR_2(pwm%d_auto_channels_temp, 0644, show_pwm_sensor,
1252 store_pwm_sensor, 0, 0),
1253 SENSOR_ATTR_2(pwm%d_auto_point1_pwm, 0644, show_pwm_setting,
1254 store_pwm_setting, 1, 0),
1255 SENSOR_ATTR_2(pwm%d_auto_point2_pwm, 0644, show_pwm_setting,
1256 store_pwm_setting, 2, 0),
1257 SENSOR_ATTR_2(pwm%d_auto_point1_temp, 0644, show_pwm_setting,
1258 store_pwm_setting, 3, 0),
1259 SENSOR_ATTR_2(pwm%d_auto_point2_temp, 0644, show_pwm_setting,
1260 store_pwm_setting, 4, 0),
1261};
1262
Hans de Goedea2392e02006-06-04 20:23:01 +02001263static struct sensor_device_attribute_2 abituguru_sysfs_attr[] = {
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001264 SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0),
1265};
1266
1267static int __devinit abituguru_probe(struct platform_device *pdev)
1268{
1269 struct abituguru_data *data;
Hans de Goedea2392e02006-06-04 20:23:01 +02001270 int i, j, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001271 char *sysfs_filename;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001272
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001273 /*
1274 * El weirdo probe order, to keep the sysfs order identical to the
1275 * BIOS and window-appliction listing order.
1276 */
Hans de Goedea2392e02006-06-04 20:23:01 +02001277 const u8 probe_order[ABIT_UGURU_MAX_BANK1_SENSORS] = {
1278 0x00, 0x01, 0x03, 0x04, 0x0A, 0x08, 0x0E, 0x02,
1279 0x09, 0x06, 0x05, 0x0B, 0x0F, 0x0D, 0x07, 0x0C };
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001280
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001281 data = kzalloc(sizeof(struct abituguru_data), GFP_KERNEL);
1282 if (!data)
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001283 return -ENOMEM;
1284
1285 data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
1286 mutex_init(&data->update_lock);
1287 platform_set_drvdata(pdev, data);
1288
1289 /* See if the uGuru is ready */
1290 if (inb_p(data->addr + ABIT_UGURU_DATA) == ABIT_UGURU_STATUS_INPUT)
1291 data->uguru_ready = 1;
1292
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001293 /*
1294 * Completely read the uGuru this has 2 purposes:
1295 * - testread / see if one really is there.
1296 * - make an in memory copy of all the uguru settings for future use.
1297 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001298 if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0,
Hans de Goedea2392e02006-06-04 20:23:01 +02001299 data->alarms, 3, ABIT_UGURU_MAX_RETRIES) != 3)
1300 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001301
Hans de Goedea2392e02006-06-04 20:23:01 +02001302 for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001303 if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, i,
1304 &data->bank1_value[i], 1,
Hans de Goedea2392e02006-06-04 20:23:01 +02001305 ABIT_UGURU_MAX_RETRIES) != 1)
1306 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001307 if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1+1, i,
1308 data->bank1_settings[i], 3,
Hans de Goedea2392e02006-06-04 20:23:01 +02001309 ABIT_UGURU_MAX_RETRIES) != 3)
1310 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001311 }
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001312 /*
1313 * Note: We don't know how many bank2 sensors / pwms there really are,
1314 * but in order to "detect" this we need to read the maximum amount
1315 * anyways. If we read sensors/pwms not there we'll just read crap
1316 * this can't hurt. We need the detection because we don't want
1317 * unwanted writes, which will hurt!
1318 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001319 for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) {
1320 if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2, i,
1321 &data->bank2_value[i], 1,
Hans de Goedea2392e02006-06-04 20:23:01 +02001322 ABIT_UGURU_MAX_RETRIES) != 1)
1323 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001324 if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2+1, i,
1325 data->bank2_settings[i], 2,
Hans de Goedea2392e02006-06-04 20:23:01 +02001326 ABIT_UGURU_MAX_RETRIES) != 2)
1327 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001328 }
1329 for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) {
1330 if (abituguru_read(data, ABIT_UGURU_FAN_PWM, i,
1331 data->pwm_settings[i], 5,
Hans de Goedea2392e02006-06-04 20:23:01 +02001332 ABIT_UGURU_MAX_RETRIES) != 5)
1333 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001334 }
1335 data->last_updated = jiffies;
1336
1337 /* Detect sensor types and fill the sysfs attr for bank1 */
Hans de Goedea2392e02006-06-04 20:23:01 +02001338 sysfs_attr_i = 0;
1339 sysfs_filename = data->sysfs_names;
1340 sysfs_names_free = ABITUGURU_SYSFS_NAMES_LENGTH;
1341 for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001342 res = abituguru_detect_bank1_sensor_type(data, probe_order[i]);
Hans de Goedea2392e02006-06-04 20:23:01 +02001343 if (res < 0)
1344 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001345 if (res == ABIT_UGURU_NC)
1346 continue;
1347
Hans de Goedea2392e02006-06-04 20:23:01 +02001348 /* res 1 (temp) sensors have 7 sysfs entries, 0 (in) 9 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001349 for (j = 0; j < (res ? 7 : 9); j++) {
Hans de Goedea2392e02006-06-04 20:23:01 +02001350 used = snprintf(sysfs_filename, sysfs_names_free,
1351 abituguru_sysfs_bank1_templ[res][j].dev_attr.
1352 attr.name, data->bank1_sensors[res] + res)
1353 + 1;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001354 data->sysfs_attr[sysfs_attr_i] =
1355 abituguru_sysfs_bank1_templ[res][j];
1356 data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
1357 sysfs_filename;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001358 data->sysfs_attr[sysfs_attr_i].index = probe_order[i];
Hans de Goedea2392e02006-06-04 20:23:01 +02001359 sysfs_filename += used;
1360 sysfs_names_free -= used;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001361 sysfs_attr_i++;
1362 }
1363 data->bank1_max_value[probe_order[i]] =
1364 abituguru_bank1_max_value[res];
1365 data->bank1_address[res][data->bank1_sensors[res]] =
1366 probe_order[i];
1367 data->bank1_sensors[res]++;
1368 }
1369 /* Detect number of sensors and fill the sysfs attr for bank2 (fans) */
1370 abituguru_detect_no_bank2_sensors(data);
1371 for (i = 0; i < data->bank2_sensors; i++) {
Hans de Goedea2392e02006-06-04 20:23:01 +02001372 for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_fan_templ); j++) {
1373 used = snprintf(sysfs_filename, sysfs_names_free,
1374 abituguru_sysfs_fan_templ[j].dev_attr.attr.name,
1375 i + 1) + 1;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001376 data->sysfs_attr[sysfs_attr_i] =
1377 abituguru_sysfs_fan_templ[j];
1378 data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
1379 sysfs_filename;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001380 data->sysfs_attr[sysfs_attr_i].index = i;
Hans de Goedea2392e02006-06-04 20:23:01 +02001381 sysfs_filename += used;
1382 sysfs_names_free -= used;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001383 sysfs_attr_i++;
1384 }
1385 }
1386 /* Detect number of sensors and fill the sysfs attr for pwms */
1387 abituguru_detect_no_pwms(data);
1388 for (i = 0; i < data->pwms; i++) {
Hans de Goedea2392e02006-06-04 20:23:01 +02001389 for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_pwm_templ); j++) {
1390 used = snprintf(sysfs_filename, sysfs_names_free,
1391 abituguru_sysfs_pwm_templ[j].dev_attr.attr.name,
1392 i + 1) + 1;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001393 data->sysfs_attr[sysfs_attr_i] =
1394 abituguru_sysfs_pwm_templ[j];
1395 data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
1396 sysfs_filename;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001397 data->sysfs_attr[sysfs_attr_i].index = i;
Hans de Goedea2392e02006-06-04 20:23:01 +02001398 sysfs_filename += used;
1399 sysfs_names_free -= used;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001400 sysfs_attr_i++;
1401 }
1402 }
Hans de Goedea2392e02006-06-04 20:23:01 +02001403 /* Fail safe check, this should never happen! */
1404 if (sysfs_names_free < 0) {
Joe Perches28ebfa12010-10-20 06:51:25 +00001405 pr_err("Fatal error ran out of space for sysfs attr names. %s %s",
1406 never_happen, report_this);
Hans de Goedea2392e02006-06-04 20:23:01 +02001407 res = -ENAMETOOLONG;
1408 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001409 }
Joe Perches28ebfa12010-10-20 06:51:25 +00001410 pr_info("found Abit uGuru\n");
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001411
1412 /* Register sysfs hooks */
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001413 for (i = 0; i < sysfs_attr_i; i++)
Hans de Goedebc8f0a22007-02-14 21:15:05 +01001414 if (device_create_file(&pdev->dev,
1415 &data->sysfs_attr[i].dev_attr))
1416 goto abituguru_probe_error;
Hans de Goedea2392e02006-06-04 20:23:01 +02001417 for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++)
Hans de Goedebc8f0a22007-02-14 21:15:05 +01001418 if (device_create_file(&pdev->dev,
1419 &abituguru_sysfs_attr[i].dev_attr))
1420 goto abituguru_probe_error;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001421
Tony Jones1beeffe2007-08-20 13:46:20 -07001422 data->hwmon_dev = hwmon_device_register(&pdev->dev);
1423 if (!IS_ERR(data->hwmon_dev))
Hans de Goedebc8f0a22007-02-14 21:15:05 +01001424 return 0; /* success */
Hans de Goedea2392e02006-06-04 20:23:01 +02001425
Tony Jones1beeffe2007-08-20 13:46:20 -07001426 res = PTR_ERR(data->hwmon_dev);
Hans de Goedea2392e02006-06-04 20:23:01 +02001427abituguru_probe_error:
Hans de Goedebc8f0a22007-02-14 21:15:05 +01001428 for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
1429 device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
1430 for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++)
1431 device_remove_file(&pdev->dev,
1432 &abituguru_sysfs_attr[i].dev_attr);
Jean Delvare04a62172007-06-12 13:57:19 +02001433 platform_set_drvdata(pdev, NULL);
Hans de Goedea2392e02006-06-04 20:23:01 +02001434 kfree(data);
1435 return res;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001436}
1437
1438static int __devexit abituguru_remove(struct platform_device *pdev)
1439{
Hans de Goedebc8f0a22007-02-14 21:15:05 +01001440 int i;
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001441 struct abituguru_data *data = platform_get_drvdata(pdev);
1442
Tony Jones1beeffe2007-08-20 13:46:20 -07001443 hwmon_device_unregister(data->hwmon_dev);
Hans de Goedebc8f0a22007-02-14 21:15:05 +01001444 for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
1445 device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
1446 for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++)
1447 device_remove_file(&pdev->dev,
1448 &abituguru_sysfs_attr[i].dev_attr);
Jean Delvare04a62172007-06-12 13:57:19 +02001449 platform_set_drvdata(pdev, NULL);
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001450 kfree(data);
1451
1452 return 0;
1453}
1454
1455static struct abituguru_data *abituguru_update_device(struct device *dev)
1456{
1457 int i, err;
1458 struct abituguru_data *data = dev_get_drvdata(dev);
1459 /* fake a complete successful read if no update necessary. */
1460 char success = 1;
1461
1462 mutex_lock(&data->update_lock);
1463 if (time_after(jiffies, data->last_updated + HZ)) {
1464 success = 0;
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001465 err = abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0,
1466 data->alarms, 3, 0);
1467 if (err != 3)
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001468 goto LEAVE_UPDATE;
Hans de Goedea2392e02006-06-04 20:23:01 +02001469 for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) {
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001470 err = abituguru_read(data, ABIT_UGURU_SENSOR_BANK1,
1471 i, &data->bank1_value[i], 1, 0);
1472 if (err != 1)
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001473 goto LEAVE_UPDATE;
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001474 err = abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1,
1475 i, data->bank1_settings[i], 3, 0);
1476 if (err != 3)
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001477 goto LEAVE_UPDATE;
1478 }
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001479 for (i = 0; i < data->bank2_sensors; i++) {
1480 err = abituguru_read(data, ABIT_UGURU_SENSOR_BANK2, i,
1481 &data->bank2_value[i], 1, 0);
1482 if (err != 1)
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001483 goto LEAVE_UPDATE;
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001484 }
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001485 /* success! */
1486 success = 1;
1487 data->update_timeouts = 0;
1488LEAVE_UPDATE:
1489 /* handle timeout condition */
Hans de Goedefaf9b612006-08-25 10:24:20 +02001490 if (!success && (err == -EBUSY || err >= 0)) {
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001491 /* No overflow please */
1492 if (data->update_timeouts < 255u)
1493 data->update_timeouts++;
1494 if (data->update_timeouts <= ABIT_UGURU_MAX_TIMEOUTS) {
1495 ABIT_UGURU_DEBUG(3, "timeout exceeded, will "
1496 "try again next update\n");
1497 /* Just a timeout, fake a successful read */
1498 success = 1;
1499 } else
1500 ABIT_UGURU_DEBUG(1, "timeout exceeded %d "
1501 "times waiting for more input state\n",
1502 (int)data->update_timeouts);
1503 }
1504 /* On success set last_updated */
1505 if (success)
1506 data->last_updated = jiffies;
1507 }
1508 mutex_unlock(&data->update_lock);
1509
1510 if (success)
1511 return data;
1512 else
1513 return NULL;
1514}
1515
Hans de Goede360b9ab2006-08-28 14:42:24 +02001516#ifdef CONFIG_PM
1517static int abituguru_suspend(struct platform_device *pdev, pm_message_t state)
1518{
1519 struct abituguru_data *data = platform_get_drvdata(pdev);
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001520 /*
1521 * make sure all communications with the uguru are done and no new
1522 * ones are started
1523 */
Hans de Goede360b9ab2006-08-28 14:42:24 +02001524 mutex_lock(&data->update_lock);
1525 return 0;
1526}
1527
1528static int abituguru_resume(struct platform_device *pdev)
1529{
1530 struct abituguru_data *data = platform_get_drvdata(pdev);
1531 /* See if the uGuru is still ready */
1532 if (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT)
1533 data->uguru_ready = 0;
1534 mutex_unlock(&data->update_lock);
1535 return 0;
1536}
1537#else
1538#define abituguru_suspend NULL
1539#define abituguru_resume NULL
1540#endif /* CONFIG_PM */
1541
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001542static struct platform_driver abituguru_driver = {
1543 .driver = {
1544 .owner = THIS_MODULE,
1545 .name = ABIT_UGURU_NAME,
1546 },
Hans de Goede360b9ab2006-08-28 14:42:24 +02001547 .probe = abituguru_probe,
1548 .remove = __devexit_p(abituguru_remove),
1549 .suspend = abituguru_suspend,
1550 .resume = abituguru_resume,
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001551};
1552
1553static int __init abituguru_detect(void)
1554{
Guenter Roeck1bd385d2012-01-14 12:30:52 -08001555 /*
1556 * See if there is an uguru there. After a reboot uGuru will hold 0x00
1557 * at DATA and 0xAC, when this driver has already been loaded once
1558 * DATA will hold 0x08. For most uGuru's CMD will hold 0xAC in either
1559 * scenario but some will hold 0x00.
1560 * Some uGuru's initially hold 0x09 at DATA and will only hold 0x08
1561 * after reading CMD first, so CMD must be read first!
1562 */
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001563 u8 cmd_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_CMD);
1564 u8 data_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_DATA);
1565 if (((data_val == 0x00) || (data_val == 0x08)) &&
1566 ((cmd_val == 0x00) || (cmd_val == 0xAC)))
1567 return ABIT_UGURU_BASE;
1568
1569 ABIT_UGURU_DEBUG(2, "no Abit uGuru found, data = 0x%02X, cmd = "
1570 "0x%02X\n", (unsigned int)data_val, (unsigned int)cmd_val);
1571
1572 if (force) {
Joe Perches28ebfa12010-10-20 06:51:25 +00001573 pr_info("Assuming Abit uGuru is present because of \"force\" parameter\n");
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001574 return ABIT_UGURU_BASE;
1575 }
1576
1577 /* No uGuru found */
1578 return -ENODEV;
1579}
1580
1581static struct platform_device *abituguru_pdev;
1582
1583static int __init abituguru_init(void)
1584{
1585 int address, err;
1586 struct resource res = { .flags = IORESOURCE_IO };
Jeff Garzik18552562007-10-03 15:15:40 -04001587 const char *board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
Hans de Goedec182f5b2007-07-10 17:09:57 +02001588
1589 /* safety check, refuse to load on non Abit motherboards */
1590 if (!force && (!board_vendor ||
1591 strcmp(board_vendor, "http://www.abit.com.tw/")))
1592 return -ENODEV;
Hans de Goedec182f5b2007-07-10 17:09:57 +02001593
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001594 address = abituguru_detect();
1595 if (address < 0)
1596 return address;
1597
1598 err = platform_driver_register(&abituguru_driver);
1599 if (err)
1600 goto exit;
1601
1602 abituguru_pdev = platform_device_alloc(ABIT_UGURU_NAME, address);
1603 if (!abituguru_pdev) {
Joe Perches28ebfa12010-10-20 06:51:25 +00001604 pr_err("Device allocation failed\n");
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001605 err = -ENOMEM;
1606 goto exit_driver_unregister;
1607 }
1608
1609 res.start = address;
1610 res.end = address + ABIT_UGURU_REGION_LENGTH - 1;
1611 res.name = ABIT_UGURU_NAME;
1612
1613 err = platform_device_add_resources(abituguru_pdev, &res, 1);
1614 if (err) {
Joe Perches28ebfa12010-10-20 06:51:25 +00001615 pr_err("Device resource addition failed (%d)\n", err);
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001616 goto exit_device_put;
1617 }
1618
1619 err = platform_device_add(abituguru_pdev);
1620 if (err) {
Joe Perches28ebfa12010-10-20 06:51:25 +00001621 pr_err("Device addition failed (%d)\n", err);
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001622 goto exit_device_put;
1623 }
1624
1625 return 0;
1626
1627exit_device_put:
1628 platform_device_put(abituguru_pdev);
1629exit_driver_unregister:
1630 platform_driver_unregister(&abituguru_driver);
1631exit:
1632 return err;
1633}
1634
1635static void __exit abituguru_exit(void)
1636{
1637 platform_device_unregister(abituguru_pdev);
1638 platform_driver_unregister(&abituguru_driver);
1639}
1640
Hans de Goede93d0cc52011-03-21 17:59:36 +01001641MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
Hans de Goedef2b84bb2006-06-04 20:22:24 +02001642MODULE_DESCRIPTION("Abit uGuru Sensor device");
1643MODULE_LICENSE("GPL");
1644
1645module_init(abituguru_init);
1646module_exit(abituguru_exit);