| 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 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 | */ |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/sched.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/jiffies.h> |
| 28 | #include <linux/mutex.h> |
| 29 | #include <linux/err.h> |
| 30 | #include <linux/delay.h> |
| 31 | #include <linux/platform_device.h> |
| 32 | #include <linux/hwmon.h> |
| 33 | #include <linux/hwmon-sysfs.h> |
| 34 | #include <linux/dmi.h> |
| 35 | #include <linux/io.h> |
| 36 | |
| 37 | /* Banks */ |
| 38 | #define ABIT_UGURU_ALARM_BANK 0x20 /* 1x 3 bytes */ |
| 39 | #define ABIT_UGURU_SENSOR_BANK1 0x21 /* 16x volt and temp */ |
| 40 | #define ABIT_UGURU_FAN_PWM 0x24 /* 3x 5 bytes */ |
| 41 | #define ABIT_UGURU_SENSOR_BANK2 0x26 /* fans */ |
| 42 | /* max nr of sensors in bank1, a bank1 sensor can be in, temp or nc */ |
| 43 | #define ABIT_UGURU_MAX_BANK1_SENSORS 16 |
| 44 | /* Warning if you increase one of the 2 MAX defines below to 10 or higher you |
| 45 | should adjust the belonging _NAMES_LENGTH macro for the 2 digit number! */ |
| 46 | /* max nr of sensors in bank2, currently mb's with max 6 fans are known */ |
| 47 | #define ABIT_UGURU_MAX_BANK2_SENSORS 6 |
| 48 | /* max nr of pwm outputs, currently mb's with max 5 pwm outputs are known */ |
| 49 | #define ABIT_UGURU_MAX_PWMS 5 |
| 50 | /* uGuru sensor bank 1 flags */ /* Alarm if: */ |
| 51 | #define ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE 0x01 /* temp over warn */ |
| 52 | #define ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE 0x02 /* volt over max */ |
| 53 | #define ABIT_UGURU_VOLT_LOW_ALARM_ENABLE 0x04 /* volt under min */ |
| 54 | #define ABIT_UGURU_TEMP_HIGH_ALARM_FLAG 0x10 /* temp is over warn */ |
| 55 | #define ABIT_UGURU_VOLT_HIGH_ALARM_FLAG 0x20 /* volt is over max */ |
| 56 | #define ABIT_UGURU_VOLT_LOW_ALARM_FLAG 0x40 /* volt is under min */ |
| 57 | /* uGuru sensor bank 2 flags */ /* Alarm if: */ |
| 58 | #define ABIT_UGURU_FAN_LOW_ALARM_ENABLE 0x01 /* fan under min */ |
| 59 | /* uGuru sensor bank common flags */ |
| 60 | #define ABIT_UGURU_BEEP_ENABLE 0x08 /* beep if alarm */ |
| 61 | #define ABIT_UGURU_SHUTDOWN_ENABLE 0x80 /* shutdown if alarm */ |
| 62 | /* uGuru fan PWM (speed control) flags */ |
| 63 | #define ABIT_UGURU_FAN_PWM_ENABLE 0x80 /* enable speed control */ |
| 64 | /* Values used for conversion */ |
| 65 | #define ABIT_UGURU_FAN_MAX 15300 /* RPM */ |
| 66 | /* Bank1 sensor types */ |
| 67 | #define ABIT_UGURU_IN_SENSOR 0 |
| 68 | #define ABIT_UGURU_TEMP_SENSOR 1 |
| 69 | #define ABIT_UGURU_NC 2 |
| 70 | /* In many cases we need to wait for the uGuru to reach a certain status, most |
| 71 | of the time it will reach this status within 30 - 90 ISA reads, and thus we |
| 72 | can best busy wait. This define gives the total amount of reads to try. */ |
| 73 | #define ABIT_UGURU_WAIT_TIMEOUT 125 |
| 74 | /* However sometimes older versions of the uGuru seem to be distracted and they |
| 75 | do not respond for a long time. To handle this we sleep before each of the |
| 76 | last ABIT_UGURU_WAIT_TIMEOUT_SLEEP tries. */ |
| 77 | #define ABIT_UGURU_WAIT_TIMEOUT_SLEEP 5 |
| 78 | /* Normally all expected status in abituguru_ready, are reported after the |
| 79 | first read, but sometimes not and we need to poll. */ |
| 80 | #define ABIT_UGURU_READY_TIMEOUT 5 |
| 81 | /* Maximum 3 retries on timedout reads/writes, delay 200 ms before retrying */ |
| 82 | #define ABIT_UGURU_MAX_RETRIES 3 |
| 83 | #define ABIT_UGURU_RETRY_DELAY (HZ/5) |
| 84 | /* Maximum 2 timeouts in abituguru_update_device, iow 3 in a row is an error */ |
| 85 | #define ABIT_UGURU_MAX_TIMEOUTS 2 |
| 86 | /* utility macros */ |
| 87 | #define ABIT_UGURU_NAME "abituguru" |
| 88 | #define ABIT_UGURU_DEBUG(level, format, arg...) \ |
| 89 | if (level <= verbose) \ |
| 90 | printk(KERN_DEBUG ABIT_UGURU_NAME ": " format , ## arg) |
| 91 | /* Macros to help calculate the sysfs_names array length */ |
| 92 | /* sum of strlen of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0, |
| 93 | in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0 */ |
| 94 | #define ABITUGURU_IN_NAMES_LENGTH (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14) |
| 95 | /* sum of strlen of: temp??_input\0, temp??_max\0, temp??_crit\0, |
| 96 | temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0 */ |
| 97 | #define ABITUGURU_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16) |
| 98 | /* sum of strlen of: fan?_input\0, fan?_min\0, fan?_alarm\0, |
| 99 | fan?_alarm_enable\0, fan?_beep\0, fan?_shutdown\0 */ |
| 100 | #define ABITUGURU_FAN_NAMES_LENGTH (11 + 9 + 11 + 18 + 10 + 14) |
| 101 | /* sum of strlen of: pwm?_enable\0, pwm?_auto_channels_temp\0, |
| 102 | pwm?_auto_point{1,2}_pwm\0, pwm?_auto_point{1,2}_temp\0 */ |
| 103 | #define ABITUGURU_PWM_NAMES_LENGTH (12 + 24 + 2 * 21 + 2 * 22) |
| 104 | /* IN_NAMES_LENGTH > TEMP_NAMES_LENGTH so assume all bank1 sensors are in */ |
| 105 | #define ABITUGURU_SYSFS_NAMES_LENGTH ( \ |
| 106 | ABIT_UGURU_MAX_BANK1_SENSORS * ABITUGURU_IN_NAMES_LENGTH + \ |
| 107 | ABIT_UGURU_MAX_BANK2_SENSORS * ABITUGURU_FAN_NAMES_LENGTH + \ |
| 108 | ABIT_UGURU_MAX_PWMS * ABITUGURU_PWM_NAMES_LENGTH) |
| 109 | |
| 110 | /* All the macros below are named identical to the oguru and oguru2 programs |
| 111 | reverse engineered by Olle Sandberg, hence the names might not be 100% |
| 112 | logical. I could come up with better names, but I prefer keeping the names |
| 113 | identical so that this driver can be compared with his work more easily. */ |
| 114 | /* Two i/o-ports are used by uGuru */ |
| 115 | #define ABIT_UGURU_BASE 0x00E0 |
| 116 | /* Used to tell uGuru what to read and to read the actual data */ |
| 117 | #define ABIT_UGURU_CMD 0x00 |
| 118 | /* Mostly used to check if uGuru is busy */ |
| 119 | #define ABIT_UGURU_DATA 0x04 |
| 120 | #define ABIT_UGURU_REGION_LENGTH 5 |
| 121 | /* uGuru status' */ |
| 122 | #define ABIT_UGURU_STATUS_WRITE 0x00 /* Ready to be written */ |
| 123 | #define ABIT_UGURU_STATUS_READ 0x01 /* Ready to be read */ |
| 124 | #define ABIT_UGURU_STATUS_INPUT 0x08 /* More input */ |
| 125 | #define ABIT_UGURU_STATUS_READY 0x09 /* Ready to be written */ |
| 126 | |
| 127 | /* Constants */ |
| 128 | /* in (Volt) sensors go up to 3494 mV, temp to 255000 millidegrees Celsius */ |
| 129 | static const int abituguru_bank1_max_value[2] = { 3494, 255000 }; |
| 130 | /* Min / Max allowed values for sensor2 (fan) alarm threshold, these values |
| 131 | correspond to 300-3000 RPM */ |
| 132 | static const u8 abituguru_bank2_min_threshold = 5; |
| 133 | static const u8 abituguru_bank2_max_threshold = 50; |
| 134 | /* Register 0 is a bitfield, 1 and 2 are pwm settings (255 = 100%), 3 and 4 |
| 135 | are temperature trip points. */ |
| 136 | static const int abituguru_pwm_settings_multiplier[5] = { 0, 1, 1, 1000, 1000 }; |
| 137 | /* Min / Max allowed values for pwm_settings. Note: pwm1 (CPU fan) is a |
| 138 | special case the minium allowed pwm% setting for this is 30% (77) on |
| 139 | some MB's this special case is handled in the code! */ |
| 140 | static const u8 abituguru_pwm_min[5] = { 0, 170, 170, 25, 25 }; |
| 141 | static const u8 abituguru_pwm_max[5] = { 0, 255, 255, 75, 75 }; |
| 142 | |
| 143 | |
| 144 | /* Insmod parameters */ |
| 145 | static int force; |
| 146 | module_param(force, bool, 0); |
| 147 | MODULE_PARM_DESC(force, "Set to one to force detection."); |
| 148 | static int bank1_types[ABIT_UGURU_MAX_BANK1_SENSORS] = { -1, -1, -1, -1, -1, |
| 149 | -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 }; |
| 150 | module_param_array(bank1_types, int, NULL, 0); |
| 151 | MODULE_PARM_DESC(bank1_types, "Bank1 sensortype autodetection override:\n" |
| 152 | " -1 autodetect\n" |
| 153 | " 0 volt sensor\n" |
| 154 | " 1 temp sensor\n" |
| 155 | " 2 not connected"); |
| 156 | static int fan_sensors; |
| 157 | module_param(fan_sensors, int, 0); |
| 158 | MODULE_PARM_DESC(fan_sensors, "Number of fan sensors on the uGuru " |
| 159 | "(0 = autodetect)"); |
| 160 | static int pwms; |
| 161 | module_param(pwms, int, 0); |
| 162 | MODULE_PARM_DESC(pwms, "Number of PWMs on the uGuru " |
| 163 | "(0 = autodetect)"); |
| 164 | |
| 165 | /* Default verbose is 2, since this driver is still in the testing phase */ |
| 166 | static int verbose = 2; |
| 167 | module_param(verbose, int, 0644); |
| 168 | MODULE_PARM_DESC(verbose, "How verbose should the driver be? (0-3):\n" |
| 169 | " 0 normal output\n" |
| 170 | " 1 + verbose error reporting\n" |
| 171 | " 2 + sensors type probing info\n" |
| 172 | " 3 + retryable error reporting"); |
| 173 | |
| 174 | |
| 175 | /* For the Abit uGuru, we need to keep some data in memory. |
| 176 | The structure is dynamically allocated, at the same time when a new |
| 177 | abituguru device is allocated. */ |
| 178 | struct abituguru_data { |
| 179 | struct device *hwmon_dev; /* hwmon registered device */ |
| 180 | struct mutex update_lock; /* protect access to data and uGuru */ |
| 181 | unsigned long last_updated; /* In jiffies */ |
| 182 | unsigned short addr; /* uguru base address */ |
| 183 | char uguru_ready; /* is the uguru in ready state? */ |
| 184 | unsigned char update_timeouts; /* number of update timeouts since last |
| 185 | successful update */ |
| 186 | |
| 187 | /* The sysfs attr and their names are generated automatically, for bank1 |
| 188 | we cannot use a predefined array because we don't know beforehand |
| 189 | of a sensor is a volt or a temp sensor, for bank2 and the pwms its |
| 190 | easier todo things the same way. For in sensors we have 9 (temp 7) |
| 191 | sysfs entries per sensor, for bank2 and pwms 6. */ |
| 192 | struct sensor_device_attribute_2 sysfs_attr[ |
| 193 | ABIT_UGURU_MAX_BANK1_SENSORS * 9 + |
| 194 | ABIT_UGURU_MAX_BANK2_SENSORS * 6 + ABIT_UGURU_MAX_PWMS * 6]; |
| 195 | /* Buffer to store the dynamically generated sysfs names */ |
| 196 | char sysfs_names[ABITUGURU_SYSFS_NAMES_LENGTH]; |
| 197 | |
| 198 | /* Bank 1 data */ |
| 199 | /* number of and addresses of [0] in, [1] temp sensors */ |
| 200 | u8 bank1_sensors[2]; |
| 201 | u8 bank1_address[2][ABIT_UGURU_MAX_BANK1_SENSORS]; |
| 202 | u8 bank1_value[ABIT_UGURU_MAX_BANK1_SENSORS]; |
| 203 | /* This array holds 3 entries per sensor for the bank 1 sensor settings |
| 204 | (flags, min, max for voltage / flags, warn, shutdown for temp). */ |
| 205 | u8 bank1_settings[ABIT_UGURU_MAX_BANK1_SENSORS][3]; |
| 206 | /* Maximum value for each sensor used for scaling in mV/millidegrees |
| 207 | Celsius. */ |
| 208 | int bank1_max_value[ABIT_UGURU_MAX_BANK1_SENSORS]; |
| 209 | |
| 210 | /* Bank 2 data, ABIT_UGURU_MAX_BANK2_SENSORS entries for bank2 */ |
| 211 | u8 bank2_sensors; /* actual number of bank2 sensors found */ |
| 212 | u8 bank2_value[ABIT_UGURU_MAX_BANK2_SENSORS]; |
| 213 | u8 bank2_settings[ABIT_UGURU_MAX_BANK2_SENSORS][2]; /* flags, min */ |
| 214 | |
| 215 | /* Alarms 2 bytes for bank1, 1 byte for bank2 */ |
| 216 | u8 alarms[3]; |
| 217 | |
| 218 | /* Fan PWM (speed control) 5 bytes per PWM */ |
| 219 | u8 pwms; /* actual number of pwms found */ |
| 220 | u8 pwm_settings[ABIT_UGURU_MAX_PWMS][5]; |
| 221 | }; |
| 222 | |
| 223 | /* wait till the uguru is in the specified state */ |
| 224 | static int abituguru_wait(struct abituguru_data *data, u8 state) |
| 225 | { |
| 226 | int timeout = ABIT_UGURU_WAIT_TIMEOUT; |
| 227 | |
| 228 | while (inb_p(data->addr + ABIT_UGURU_DATA) != state) { |
| 229 | timeout--; |
| 230 | if (timeout == 0) |
| 231 | return -EBUSY; |
| 232 | /* sleep a bit before our last few tries, see the comment on |
| 233 | this where ABIT_UGURU_WAIT_TIMEOUT_SLEEP is defined. */ |
| 234 | if (timeout <= ABIT_UGURU_WAIT_TIMEOUT_SLEEP) |
| 235 | msleep(0); |
| 236 | } |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | /* Put the uguru in ready for input state */ |
| 241 | static int abituguru_ready(struct abituguru_data *data) |
| 242 | { |
| 243 | int timeout = ABIT_UGURU_READY_TIMEOUT; |
| 244 | |
| 245 | if (data->uguru_ready) |
| 246 | return 0; |
| 247 | |
| 248 | /* Reset? / Prepare for next read/write cycle */ |
| 249 | outb(0x00, data->addr + ABIT_UGURU_DATA); |
| 250 | |
| 251 | /* Wait till the uguru is ready */ |
| 252 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READY)) { |
| 253 | ABIT_UGURU_DEBUG(1, |
| 254 | "timeout exceeded waiting for ready state\n"); |
| 255 | return -EIO; |
| 256 | } |
| 257 | |
| 258 | /* Cmd port MUST be read now and should contain 0xAC */ |
| 259 | while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) { |
| 260 | timeout--; |
| 261 | if (timeout == 0) { |
| 262 | ABIT_UGURU_DEBUG(1, |
| 263 | "CMD reg does not hold 0xAC after ready command\n"); |
| 264 | return -EIO; |
| 265 | } |
| 266 | msleep(0); |
| 267 | } |
| 268 | |
| 269 | /* After this the ABIT_UGURU_DATA port should contain |
| 270 | ABIT_UGURU_STATUS_INPUT */ |
| 271 | timeout = ABIT_UGURU_READY_TIMEOUT; |
| 272 | while (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) { |
| 273 | timeout--; |
| 274 | if (timeout == 0) { |
| 275 | ABIT_UGURU_DEBUG(1, |
| 276 | "state != more input after ready command\n"); |
| 277 | return -EIO; |
| 278 | } |
| 279 | msleep(0); |
| 280 | } |
| 281 | |
| 282 | data->uguru_ready = 1; |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | /* Send the bank and then sensor address to the uGuru for the next read/write |
| 287 | cycle. This function gets called as the first part of a read/write by |
| 288 | abituguru_read and abituguru_write. This function should never be |
| 289 | called by any other function. */ |
| 290 | static int abituguru_send_address(struct abituguru_data *data, |
| 291 | u8 bank_addr, u8 sensor_addr, int retries) |
| 292 | { |
| 293 | /* assume the caller does error handling itself if it has not requested |
| 294 | any retries, and thus be quiet. */ |
| 295 | int report_errors = retries; |
| 296 | |
| 297 | for (;;) { |
| 298 | /* Make sure the uguru is ready and then send the bank address, |
| 299 | after this the uguru is no longer "ready". */ |
| 300 | if (abituguru_ready(data) != 0) |
| 301 | return -EIO; |
| 302 | outb(bank_addr, data->addr + ABIT_UGURU_DATA); |
| 303 | data->uguru_ready = 0; |
| 304 | |
| 305 | /* Wait till the uguru is ABIT_UGURU_STATUS_INPUT state again |
| 306 | and send the sensor addr */ |
| 307 | if (abituguru_wait(data, ABIT_UGURU_STATUS_INPUT)) { |
| 308 | if (retries) { |
| 309 | ABIT_UGURU_DEBUG(3, "timeout exceeded " |
| 310 | "waiting for more input state, %d " |
| 311 | "tries remaining\n", retries); |
| 312 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 313 | schedule_timeout(ABIT_UGURU_RETRY_DELAY); |
| 314 | retries--; |
| 315 | continue; |
| 316 | } |
| 317 | if (report_errors) |
| 318 | ABIT_UGURU_DEBUG(1, "timeout exceeded " |
| 319 | "waiting for more input state " |
| 320 | "(bank: %d)\n", (int)bank_addr); |
| 321 | return -EBUSY; |
| 322 | } |
| 323 | outb(sensor_addr, data->addr + ABIT_UGURU_CMD); |
| 324 | return 0; |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | /* Read count bytes from sensor sensor_addr in bank bank_addr and store the |
| 329 | result in buf, retry the send address part of the read retries times. */ |
| 330 | static int abituguru_read(struct abituguru_data *data, |
| 331 | u8 bank_addr, u8 sensor_addr, u8 *buf, int count, int retries) |
| 332 | { |
| 333 | int i; |
| 334 | |
| 335 | /* Send the address */ |
| 336 | i = abituguru_send_address(data, bank_addr, sensor_addr, retries); |
| 337 | if (i) |
| 338 | return i; |
| 339 | |
| 340 | /* And read the data */ |
| 341 | for (i = 0; i < count; i++) { |
| 342 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) { |
| 343 | ABIT_UGURU_DEBUG(retries ? 1 : 3, |
| 344 | "timeout exceeded waiting for " |
| 345 | "read state (bank: %d, sensor: %d)\n", |
| 346 | (int)bank_addr, (int)sensor_addr); |
| 347 | break; |
| 348 | } |
| 349 | buf[i] = inb(data->addr + ABIT_UGURU_CMD); |
| 350 | } |
| 351 | |
| 352 | /* Last put the chip back in ready state */ |
| 353 | abituguru_ready(data); |
| 354 | |
| 355 | return i; |
| 356 | } |
| 357 | |
| 358 | /* Write count bytes from buf to sensor sensor_addr in bank bank_addr, the send |
| 359 | address part of the write is always retried ABIT_UGURU_MAX_RETRIES times. */ |
| 360 | static int abituguru_write(struct abituguru_data *data, |
| 361 | u8 bank_addr, u8 sensor_addr, u8 *buf, int count) |
| 362 | { |
| 363 | /* We use the ready timeout as we have to wait for 0xAC just like the |
| 364 | ready function */ |
| 365 | int i, timeout = ABIT_UGURU_READY_TIMEOUT; |
| 366 | |
| 367 | /* Send the address */ |
| 368 | i = abituguru_send_address(data, bank_addr, sensor_addr, |
| 369 | ABIT_UGURU_MAX_RETRIES); |
| 370 | if (i) |
| 371 | return i; |
| 372 | |
| 373 | /* And write the data */ |
| 374 | for (i = 0; i < count; i++) { |
| 375 | if (abituguru_wait(data, ABIT_UGURU_STATUS_WRITE)) { |
| 376 | ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for " |
| 377 | "write state (bank: %d, sensor: %d)\n", |
| 378 | (int)bank_addr, (int)sensor_addr); |
| 379 | break; |
| 380 | } |
| 381 | outb(buf[i], data->addr + ABIT_UGURU_CMD); |
| 382 | } |
| 383 | |
| 384 | /* Now we need to wait till the chip is ready to be read again, |
| 385 | so that we can read 0xAC as confirmation that our write has |
| 386 | succeeded. */ |
| 387 | if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) { |
| 388 | ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for read state " |
| 389 | "after write (bank: %d, sensor: %d)\n", (int)bank_addr, |
| 390 | (int)sensor_addr); |
| 391 | return -EIO; |
| 392 | } |
| 393 | |
| 394 | /* Cmd port MUST be read now and should contain 0xAC */ |
| 395 | while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) { |
| 396 | timeout--; |
| 397 | if (timeout == 0) { |
| 398 | ABIT_UGURU_DEBUG(1, "CMD reg does not hold 0xAC after " |
| 399 | "write (bank: %d, sensor: %d)\n", |
| 400 | (int)bank_addr, (int)sensor_addr); |
| 401 | return -EIO; |
| 402 | } |
| 403 | msleep(0); |
| 404 | } |
| 405 | |
| 406 | /* Last put the chip back in ready state */ |
| 407 | abituguru_ready(data); |
| 408 | |
| 409 | return i; |
| 410 | } |
| 411 | |
| 412 | /* Detect sensor type. Temp and Volt sensors are enabled with |
| 413 | different masks and will ignore enable masks not meant for them. |
| 414 | This enables us to test what kind of sensor we're dealing with. |
| 415 | By setting the alarm thresholds so that we will always get an |
| 416 | alarm for sensor type X and then enabling the sensor as sensor type |
| 417 | X, if we then get an alarm it is a sensor of type X. */ |
| 418 | static int __devinit |
| 419 | abituguru_detect_bank1_sensor_type(struct abituguru_data *data, |
| 420 | u8 sensor_addr) |
| 421 | { |
| 422 | u8 val, test_flag, buf[3]; |
| 423 | int i, ret = -ENODEV; /* error is the most common used retval :| */ |
| 424 | |
| 425 | /* If overriden by the user return the user selected type */ |
| 426 | if (bank1_types[sensor_addr] >= ABIT_UGURU_IN_SENSOR && |
| 427 | bank1_types[sensor_addr] <= ABIT_UGURU_NC) { |
| 428 | ABIT_UGURU_DEBUG(2, "assuming sensor type %d for bank1 sensor " |
| 429 | "%d because of \"bank1_types\" module param\n", |
| 430 | bank1_types[sensor_addr], (int)sensor_addr); |
| 431 | return bank1_types[sensor_addr]; |
| 432 | } |
| 433 | |
| 434 | /* First read the sensor and the current settings */ |
| 435 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, sensor_addr, &val, |
| 436 | 1, ABIT_UGURU_MAX_RETRIES) != 1) |
| 437 | return -ENODEV; |
| 438 | |
| 439 | /* Test val is sane / usable for sensor type detection. */ |
| 440 | if ((val < 10u) || (val > 250u)) { |
| 441 | printk(KERN_WARNING ABIT_UGURU_NAME |
| 442 | ": bank1-sensor: %d reading (%d) too close to limits, " |
| 443 | "unable to determine sensor type, skipping sensor\n", |
| 444 | (int)sensor_addr, (int)val); |
| 445 | /* assume no sensor is there for sensors for which we can't |
| 446 | determine the sensor type because their reading is too close |
| 447 | to their limits, this usually means no sensor is there. */ |
| 448 | return ABIT_UGURU_NC; |
| 449 | } |
| 450 | |
| 451 | ABIT_UGURU_DEBUG(2, "testing bank1 sensor %d\n", (int)sensor_addr); |
| 452 | /* Volt sensor test, enable volt low alarm, set min value ridicously |
| 453 | high, or vica versa if the reading is very high. If its a volt |
| 454 | sensor this should always give us an alarm. */ |
| 455 | if (val <= 240u) { |
| 456 | buf[0] = ABIT_UGURU_VOLT_LOW_ALARM_ENABLE; |
| 457 | buf[1] = 245; |
| 458 | buf[2] = 250; |
| 459 | test_flag = ABIT_UGURU_VOLT_LOW_ALARM_FLAG; |
| 460 | } else { |
| 461 | buf[0] = ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE; |
| 462 | buf[1] = 5; |
| 463 | buf[2] = 10; |
| 464 | test_flag = ABIT_UGURU_VOLT_HIGH_ALARM_FLAG; |
| 465 | } |
| 466 | |
| 467 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, |
| 468 | buf, 3) != 3) |
| 469 | goto abituguru_detect_bank1_sensor_type_exit; |
| 470 | /* Now we need 20 ms to give the uguru time to read the sensors |
| 471 | and raise a voltage alarm */ |
| 472 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 473 | schedule_timeout(HZ/50); |
| 474 | /* Check for alarm and check the alarm is a volt low alarm. */ |
| 475 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, |
| 476 | ABIT_UGURU_MAX_RETRIES) != 3) |
| 477 | goto abituguru_detect_bank1_sensor_type_exit; |
| 478 | if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { |
| 479 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, |
| 480 | sensor_addr, buf, 3, |
| 481 | ABIT_UGURU_MAX_RETRIES) != 3) |
| 482 | goto abituguru_detect_bank1_sensor_type_exit; |
| 483 | if (buf[0] & test_flag) { |
| 484 | ABIT_UGURU_DEBUG(2, " found volt sensor\n"); |
| 485 | ret = ABIT_UGURU_IN_SENSOR; |
| 486 | goto abituguru_detect_bank1_sensor_type_exit; |
| 487 | } else |
| 488 | ABIT_UGURU_DEBUG(2, " alarm raised during volt " |
| 489 | "sensor test, but volt range flag not set\n"); |
| 490 | } else |
| 491 | ABIT_UGURU_DEBUG(2, " alarm not raised during volt sensor " |
| 492 | "test\n"); |
| 493 | |
| 494 | /* Temp sensor test, enable sensor as a temp sensor, set beep value |
| 495 | ridicously low (but not too low, otherwise uguru ignores it). |
| 496 | If its a temp sensor this should always give us an alarm. */ |
| 497 | buf[0] = ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE; |
| 498 | buf[1] = 5; |
| 499 | buf[2] = 10; |
| 500 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, |
| 501 | buf, 3) != 3) |
| 502 | goto abituguru_detect_bank1_sensor_type_exit; |
| 503 | /* Now we need 50 ms to give the uguru time to read the sensors |
| 504 | and raise a temp alarm */ |
| 505 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 506 | schedule_timeout(HZ/20); |
| 507 | /* Check for alarm and check the alarm is a temp high alarm. */ |
| 508 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, |
| 509 | ABIT_UGURU_MAX_RETRIES) != 3) |
| 510 | goto abituguru_detect_bank1_sensor_type_exit; |
| 511 | if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { |
| 512 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, |
| 513 | sensor_addr, buf, 3, |
| 514 | ABIT_UGURU_MAX_RETRIES) != 3) |
| 515 | goto abituguru_detect_bank1_sensor_type_exit; |
| 516 | if (buf[0] & ABIT_UGURU_TEMP_HIGH_ALARM_FLAG) { |
| 517 | ABIT_UGURU_DEBUG(2, " found temp sensor\n"); |
| 518 | ret = ABIT_UGURU_TEMP_SENSOR; |
| 519 | goto abituguru_detect_bank1_sensor_type_exit; |
| 520 | } else |
| 521 | ABIT_UGURU_DEBUG(2, " alarm raised during temp " |
| 522 | "sensor test, but temp high flag not set\n"); |
| 523 | } else |
| 524 | ABIT_UGURU_DEBUG(2, " alarm not raised during temp sensor " |
| 525 | "test\n"); |
| 526 | |
| 527 | ret = ABIT_UGURU_NC; |
| 528 | abituguru_detect_bank1_sensor_type_exit: |
| 529 | /* Restore original settings, failing here is really BAD, it has been |
| 530 | reported that some BIOS-es hang when entering the uGuru menu with |
| 531 | invalid settings present in the uGuru, so we try this 3 times. */ |
| 532 | for (i = 0; i < 3; i++) |
| 533 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, |
| 534 | sensor_addr, data->bank1_settings[sensor_addr], |
| 535 | 3) == 3) |
| 536 | break; |
| 537 | if (i == 3) { |
| 538 | printk(KERN_ERR ABIT_UGURU_NAME |
| 539 | ": Fatal error could not restore original settings. " |
| 540 | "This should never happen please report this to the " |
| 541 | "abituguru maintainer (see MAINTAINERS)\n"); |
| 542 | return -ENODEV; |
| 543 | } |
| 544 | return ret; |
| 545 | } |
| 546 | |
| 547 | /* These functions try to find out how many sensors there are in bank2 and how |
| 548 | many pwms there are. The purpose of this is to make sure that we don't give |
| 549 | the user the possibility to change settings for non-existent sensors / pwm. |
| 550 | The uGuru will happily read / write whatever memory happens to be after the |
| 551 | memory storing the PWM settings when reading/writing to a PWM which is not |
| 552 | there. Notice even if we detect a PWM which doesn't exist we normally won't |
| 553 | write to it, unless the user tries to change the settings. |
| 554 | |
| 555 | Although the uGuru allows reading (settings) from non existing bank2 |
| 556 | sensors, my version of the uGuru does seem to stop writing to them, the |
| 557 | write function above aborts in this case with: |
| 558 | "CMD reg does not hold 0xAC after write" |
| 559 | |
| 560 | Notice these 2 tests are non destructive iow read-only tests, otherwise |
| 561 | they would defeat their purpose. Although for the bank2_sensors detection a |
| 562 | read/write test would be feasible because of the reaction above, I've |
| 563 | however opted to stay on the safe side. */ |
| 564 | static void __devinit |
| 565 | abituguru_detect_no_bank2_sensors(struct abituguru_data *data) |
| 566 | { |
| 567 | int i; |
| 568 | |
| 569 | if (fan_sensors > 0 && fan_sensors <= ABIT_UGURU_MAX_BANK2_SENSORS) { |
| 570 | data->bank2_sensors = fan_sensors; |
| 571 | ABIT_UGURU_DEBUG(2, "assuming %d fan sensors because of " |
| 572 | "\"fan_sensors\" module param\n", |
| 573 | (int)data->bank2_sensors); |
| 574 | return; |
| 575 | } |
| 576 | |
| 577 | ABIT_UGURU_DEBUG(2, "detecting number of fan sensors\n"); |
| 578 | for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) { |
| 579 | /* 0x89 are the known used bits: |
| 580 | -0x80 enable shutdown |
| 581 | -0x08 enable beep |
| 582 | -0x01 enable alarm |
| 583 | All other bits should be 0, but on some motherboards |
| 584 | 0x40 (bit 6) is also high for some of the fans?? */ |
| 585 | if (data->bank2_settings[i][0] & ~0xC9) { |
| 586 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " |
| 587 | "to be a fan sensor: settings[0] = %02X\n", |
| 588 | i, (unsigned int)data->bank2_settings[i][0]); |
| 589 | break; |
| 590 | } |
| 591 | |
| 592 | /* check if the threshold is within the allowed range */ |
| 593 | if (data->bank2_settings[i][1] < |
| 594 | abituguru_bank2_min_threshold) { |
| 595 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " |
| 596 | "to be a fan sensor: the threshold (%d) is " |
| 597 | "below the minimum (%d)\n", i, |
| 598 | (int)data->bank2_settings[i][1], |
| 599 | (int)abituguru_bank2_min_threshold); |
| 600 | break; |
| 601 | } |
| 602 | if (data->bank2_settings[i][1] > |
| 603 | abituguru_bank2_max_threshold) { |
| 604 | ABIT_UGURU_DEBUG(2, " bank2 sensor %d does not seem " |
| 605 | "to be a fan sensor: the threshold (%d) is " |
| 606 | "above the maximum (%d)\n", i, |
| 607 | (int)data->bank2_settings[i][1], |
| 608 | (int)abituguru_bank2_max_threshold); |
| 609 | break; |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | data->bank2_sensors = i; |
| 614 | ABIT_UGURU_DEBUG(2, " found: %d fan sensors\n", |
| 615 | (int)data->bank2_sensors); |
| 616 | } |
| 617 | |
| 618 | static void __devinit |
| 619 | abituguru_detect_no_pwms(struct abituguru_data *data) |
| 620 | { |
| 621 | int i, j; |
| 622 | |
| 623 | if (pwms > 0 && pwms <= ABIT_UGURU_MAX_PWMS) { |
| 624 | data->pwms = pwms; |
| 625 | ABIT_UGURU_DEBUG(2, "assuming %d PWM outputs because of " |
| 626 | "\"pwms\" module param\n", (int)data->pwms); |
| 627 | return; |
| 628 | } |
| 629 | |
| 630 | ABIT_UGURU_DEBUG(2, "detecting number of PWM outputs\n"); |
| 631 | for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) { |
| 632 | /* 0x80 is the enable bit and the low |
| 633 | nibble is which temp sensor to use, |
| 634 | the other bits should be 0 */ |
| 635 | if (data->pwm_settings[i][0] & ~0x8F) { |
| 636 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " |
| 637 | "to be a pwm channel: settings[0] = %02X\n", |
| 638 | i, (unsigned int)data->pwm_settings[i][0]); |
| 639 | break; |
| 640 | } |
| 641 | |
| 642 | /* the low nibble must correspond to one of the temp sensors |
| 643 | we've found */ |
| 644 | for (j = 0; j < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; |
| 645 | j++) { |
| 646 | if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][j] == |
| 647 | (data->pwm_settings[i][0] & 0x0F)) |
| 648 | break; |
| 649 | } |
| 650 | if (j == data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) { |
| 651 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " |
| 652 | "to be a pwm channel: %d is not a valid temp " |
| 653 | "sensor address\n", i, |
| 654 | data->pwm_settings[i][0] & 0x0F); |
| 655 | break; |
| 656 | } |
| 657 | |
| 658 | /* check if all other settings are within the allowed range */ |
| 659 | for (j = 1; j < 5; j++) { |
| 660 | u8 min; |
| 661 | /* special case pwm1 min pwm% */ |
| 662 | if ((i == 0) && ((j == 1) || (j == 2))) |
| 663 | min = 77; |
| 664 | else |
| 665 | min = abituguru_pwm_min[j]; |
| 666 | if (data->pwm_settings[i][j] < min) { |
| 667 | ABIT_UGURU_DEBUG(2, " pwm channel %d does " |
| 668 | "not seem to be a pwm channel: " |
| 669 | "setting %d (%d) is below the minimum " |
| 670 | "value (%d)\n", i, j, |
| 671 | (int)data->pwm_settings[i][j], |
| 672 | (int)min); |
| 673 | goto abituguru_detect_no_pwms_exit; |
| 674 | } |
| 675 | if (data->pwm_settings[i][j] > abituguru_pwm_max[j]) { |
| 676 | ABIT_UGURU_DEBUG(2, " pwm channel %d does " |
| 677 | "not seem to be a pwm channel: " |
| 678 | "setting %d (%d) is above the maximum " |
| 679 | "value (%d)\n", i, j, |
| 680 | (int)data->pwm_settings[i][j], |
| 681 | (int)abituguru_pwm_max[j]); |
| 682 | goto abituguru_detect_no_pwms_exit; |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | /* check that min temp < max temp and min pwm < max pwm */ |
| 687 | if (data->pwm_settings[i][1] >= data->pwm_settings[i][2]) { |
| 688 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " |
| 689 | "to be a pwm channel: min pwm (%d) >= " |
| 690 | "max pwm (%d)\n", i, |
| 691 | (int)data->pwm_settings[i][1], |
| 692 | (int)data->pwm_settings[i][2]); |
| 693 | break; |
| 694 | } |
| 695 | if (data->pwm_settings[i][3] >= data->pwm_settings[i][4]) { |
| 696 | ABIT_UGURU_DEBUG(2, " pwm channel %d does not seem " |
| 697 | "to be a pwm channel: min temp (%d) >= " |
| 698 | "max temp (%d)\n", i, |
| 699 | (int)data->pwm_settings[i][3], |
| 700 | (int)data->pwm_settings[i][4]); |
| 701 | break; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | abituguru_detect_no_pwms_exit: |
| 706 | data->pwms = i; |
| 707 | ABIT_UGURU_DEBUG(2, " found: %d PWM outputs\n", (int)data->pwms); |
| 708 | } |
| 709 | |
| 710 | /* Following are the sysfs callback functions. These functions expect: |
| 711 | sensor_device_attribute_2->index: sensor address/offset in the bank |
| 712 | sensor_device_attribute_2->nr: register offset, bitmask or NA. */ |
| 713 | static struct abituguru_data *abituguru_update_device(struct device *dev); |
| 714 | |
| 715 | static ssize_t show_bank1_value(struct device *dev, |
| 716 | struct device_attribute *devattr, char *buf) |
| 717 | { |
| 718 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 719 | struct abituguru_data *data = abituguru_update_device(dev); |
| 720 | if (!data) |
| 721 | return -EIO; |
| 722 | return sprintf(buf, "%d\n", (data->bank1_value[attr->index] * |
| 723 | data->bank1_max_value[attr->index] + 128) / 255); |
| 724 | } |
| 725 | |
| 726 | static ssize_t show_bank1_setting(struct device *dev, |
| 727 | struct device_attribute *devattr, char *buf) |
| 728 | { |
| 729 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 730 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 731 | return sprintf(buf, "%d\n", |
| 732 | (data->bank1_settings[attr->index][attr->nr] * |
| 733 | data->bank1_max_value[attr->index] + 128) / 255); |
| 734 | } |
| 735 | |
| 736 | static ssize_t show_bank2_value(struct device *dev, |
| 737 | struct device_attribute *devattr, char *buf) |
| 738 | { |
| 739 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 740 | struct abituguru_data *data = abituguru_update_device(dev); |
| 741 | if (!data) |
| 742 | return -EIO; |
| 743 | return sprintf(buf, "%d\n", (data->bank2_value[attr->index] * |
| 744 | ABIT_UGURU_FAN_MAX + 128) / 255); |
| 745 | } |
| 746 | |
| 747 | static ssize_t show_bank2_setting(struct device *dev, |
| 748 | struct device_attribute *devattr, char *buf) |
| 749 | { |
| 750 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 751 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 752 | return sprintf(buf, "%d\n", |
| 753 | (data->bank2_settings[attr->index][attr->nr] * |
| 754 | ABIT_UGURU_FAN_MAX + 128) / 255); |
| 755 | } |
| 756 | |
| 757 | static ssize_t store_bank1_setting(struct device *dev, struct device_attribute |
| 758 | *devattr, const char *buf, size_t count) |
| 759 | { |
| 760 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 761 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 762 | u8 val = (simple_strtoul(buf, NULL, 10) * 255 + |
| 763 | data->bank1_max_value[attr->index]/2) / |
| 764 | data->bank1_max_value[attr->index]; |
| 765 | ssize_t ret = count; |
| 766 | |
| 767 | mutex_lock(&data->update_lock); |
| 768 | if (data->bank1_settings[attr->index][attr->nr] != val) { |
| 769 | u8 orig_val = data->bank1_settings[attr->index][attr->nr]; |
| 770 | data->bank1_settings[attr->index][attr->nr] = val; |
| 771 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, |
| 772 | attr->index, data->bank1_settings[attr->index], |
| 773 | 3) <= attr->nr) { |
| 774 | data->bank1_settings[attr->index][attr->nr] = orig_val; |
| 775 | ret = -EIO; |
| 776 | } |
| 777 | } |
| 778 | mutex_unlock(&data->update_lock); |
| 779 | return ret; |
| 780 | } |
| 781 | |
| 782 | static ssize_t store_bank2_setting(struct device *dev, struct device_attribute |
| 783 | *devattr, const char *buf, size_t count) |
| 784 | { |
| 785 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 786 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 787 | u8 val = (simple_strtoul(buf, NULL, 10)*255 + ABIT_UGURU_FAN_MAX/2) / |
| 788 | ABIT_UGURU_FAN_MAX; |
| 789 | ssize_t ret = count; |
| 790 | |
| 791 | /* this check can be done before taking the lock */ |
| 792 | if ((val < abituguru_bank2_min_threshold) || |
| 793 | (val > abituguru_bank2_max_threshold)) |
| 794 | return -EINVAL; |
| 795 | |
| 796 | mutex_lock(&data->update_lock); |
| 797 | if (data->bank2_settings[attr->index][attr->nr] != val) { |
| 798 | u8 orig_val = data->bank2_settings[attr->index][attr->nr]; |
| 799 | data->bank2_settings[attr->index][attr->nr] = val; |
| 800 | if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK2 + 2, |
| 801 | attr->index, data->bank2_settings[attr->index], |
| 802 | 2) <= attr->nr) { |
| 803 | data->bank2_settings[attr->index][attr->nr] = orig_val; |
| 804 | ret = -EIO; |
| 805 | } |
| 806 | } |
| 807 | mutex_unlock(&data->update_lock); |
| 808 | return ret; |
| 809 | } |
| 810 | |
| 811 | static ssize_t show_bank1_alarm(struct device *dev, |
| 812 | struct device_attribute *devattr, char *buf) |
| 813 | { |
| 814 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 815 | struct abituguru_data *data = abituguru_update_device(dev); |
| 816 | if (!data) |
| 817 | return -EIO; |
| 818 | /* See if the alarm bit for this sensor is set, and if the |
| 819 | alarm matches the type of alarm we're looking for (for volt |
| 820 | it can be either low or high). The type is stored in a few |
| 821 | readonly bits in the settings part of the relevant sensor. |
| 822 | The bitmask of the type is passed to us in attr->nr. */ |
| 823 | if ((data->alarms[attr->index / 8] & (0x01 << (attr->index % 8))) && |
| 824 | (data->bank1_settings[attr->index][0] & attr->nr)) |
| 825 | return sprintf(buf, "1\n"); |
| 826 | else |
| 827 | return sprintf(buf, "0\n"); |
| 828 | } |
| 829 | |
| 830 | static ssize_t show_bank2_alarm(struct device *dev, |
| 831 | struct device_attribute *devattr, char *buf) |
| 832 | { |
| 833 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 834 | struct abituguru_data *data = abituguru_update_device(dev); |
| 835 | if (!data) |
| 836 | return -EIO; |
| 837 | if (data->alarms[2] & (0x01 << attr->index)) |
| 838 | return sprintf(buf, "1\n"); |
| 839 | else |
| 840 | return sprintf(buf, "0\n"); |
| 841 | } |
| 842 | |
| 843 | static ssize_t show_bank1_mask(struct device *dev, |
| 844 | struct device_attribute *devattr, char *buf) |
| 845 | { |
| 846 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 847 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 848 | if (data->bank1_settings[attr->index][0] & attr->nr) |
| 849 | return sprintf(buf, "1\n"); |
| 850 | else |
| 851 | return sprintf(buf, "0\n"); |
| 852 | } |
| 853 | |
| 854 | static ssize_t show_bank2_mask(struct device *dev, |
| 855 | struct device_attribute *devattr, char *buf) |
| 856 | { |
| 857 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 858 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 859 | if (data->bank2_settings[attr->index][0] & attr->nr) |
| 860 | return sprintf(buf, "1\n"); |
| 861 | else |
| 862 | return sprintf(buf, "0\n"); |
| 863 | } |
| 864 | |
| 865 | static ssize_t store_bank1_mask(struct device *dev, |
| 866 | struct device_attribute *devattr, const char *buf, size_t count) |
| 867 | { |
| 868 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 869 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 870 | int mask = simple_strtoul(buf, NULL, 10); |
| 871 | ssize_t ret = count; |
| 872 | u8 orig_val; |
| 873 | |
| 874 | mutex_lock(&data->update_lock); |
| 875 | orig_val = data->bank1_settings[attr->index][0]; |
| 876 | |
| 877 | if (mask) |
| 878 | data->bank1_settings[attr->index][0] |= attr->nr; |
| 879 | else |
| 880 | data->bank1_settings[attr->index][0] &= ~attr->nr; |
| 881 | |
| 882 | if ((data->bank1_settings[attr->index][0] != orig_val) && |
| 883 | (abituguru_write(data, |
| 884 | ABIT_UGURU_SENSOR_BANK1 + 2, attr->index, |
| 885 | data->bank1_settings[attr->index], 3) < 1)) { |
| 886 | data->bank1_settings[attr->index][0] = orig_val; |
| 887 | ret = -EIO; |
| 888 | } |
| 889 | mutex_unlock(&data->update_lock); |
| 890 | return ret; |
| 891 | } |
| 892 | |
| 893 | static ssize_t store_bank2_mask(struct device *dev, |
| 894 | struct device_attribute *devattr, const char *buf, size_t count) |
| 895 | { |
| 896 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 897 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 898 | int mask = simple_strtoul(buf, NULL, 10); |
| 899 | ssize_t ret = count; |
| 900 | u8 orig_val; |
| 901 | |
| 902 | mutex_lock(&data->update_lock); |
| 903 | orig_val = data->bank2_settings[attr->index][0]; |
| 904 | |
| 905 | if (mask) |
| 906 | data->bank2_settings[attr->index][0] |= attr->nr; |
| 907 | else |
| 908 | data->bank2_settings[attr->index][0] &= ~attr->nr; |
| 909 | |
| 910 | if ((data->bank2_settings[attr->index][0] != orig_val) && |
| 911 | (abituguru_write(data, |
| 912 | ABIT_UGURU_SENSOR_BANK2 + 2, attr->index, |
| 913 | data->bank2_settings[attr->index], 2) < 1)) { |
| 914 | data->bank2_settings[attr->index][0] = orig_val; |
| 915 | ret = -EIO; |
| 916 | } |
| 917 | mutex_unlock(&data->update_lock); |
| 918 | return ret; |
| 919 | } |
| 920 | |
| 921 | /* Fan PWM (speed control) */ |
| 922 | static ssize_t show_pwm_setting(struct device *dev, |
| 923 | struct device_attribute *devattr, char *buf) |
| 924 | { |
| 925 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 926 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 927 | return sprintf(buf, "%d\n", data->pwm_settings[attr->index][attr->nr] * |
| 928 | abituguru_pwm_settings_multiplier[attr->nr]); |
| 929 | } |
| 930 | |
| 931 | static ssize_t store_pwm_setting(struct device *dev, struct device_attribute |
| 932 | *devattr, const char *buf, size_t count) |
| 933 | { |
| 934 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 935 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 936 | u8 min, val = (simple_strtoul(buf, NULL, 10) + |
| 937 | abituguru_pwm_settings_multiplier[attr->nr]/2) / |
| 938 | abituguru_pwm_settings_multiplier[attr->nr]; |
| 939 | ssize_t ret = count; |
| 940 | |
| 941 | /* special case pwm1 min pwm% */ |
| 942 | if ((attr->index == 0) && ((attr->nr == 1) || (attr->nr == 2))) |
| 943 | min = 77; |
| 944 | else |
| 945 | min = abituguru_pwm_min[attr->nr]; |
| 946 | |
| 947 | /* this check can be done before taking the lock */ |
| 948 | if ((val < min) || (val > abituguru_pwm_max[attr->nr])) |
| 949 | return -EINVAL; |
| 950 | |
| 951 | mutex_lock(&data->update_lock); |
| 952 | /* this check needs to be done after taking the lock */ |
| 953 | if ((attr->nr & 1) && |
| 954 | (val >= data->pwm_settings[attr->index][attr->nr + 1])) |
| 955 | ret = -EINVAL; |
| 956 | else if (!(attr->nr & 1) && |
| 957 | (val <= data->pwm_settings[attr->index][attr->nr - 1])) |
| 958 | ret = -EINVAL; |
| 959 | else if (data->pwm_settings[attr->index][attr->nr] != val) { |
| 960 | u8 orig_val = data->pwm_settings[attr->index][attr->nr]; |
| 961 | data->pwm_settings[attr->index][attr->nr] = val; |
| 962 | if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, |
| 963 | attr->index, data->pwm_settings[attr->index], |
| 964 | 5) <= attr->nr) { |
| 965 | data->pwm_settings[attr->index][attr->nr] = |
| 966 | orig_val; |
| 967 | ret = -EIO; |
| 968 | } |
| 969 | } |
| 970 | mutex_unlock(&data->update_lock); |
| 971 | return ret; |
| 972 | } |
| 973 | |
| 974 | static ssize_t show_pwm_sensor(struct device *dev, |
| 975 | struct device_attribute *devattr, char *buf) |
| 976 | { |
| 977 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 978 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 979 | int i; |
| 980 | /* We need to walk to the temp sensor addresses to find what |
| 981 | the userspace id of the configured temp sensor is. */ |
| 982 | for (i = 0; i < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; i++) |
| 983 | if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][i] == |
| 984 | (data->pwm_settings[attr->index][0] & 0x0F)) |
| 985 | return sprintf(buf, "%d\n", i+1); |
| 986 | |
| 987 | return -ENXIO; |
| 988 | } |
| 989 | |
| 990 | static ssize_t store_pwm_sensor(struct device *dev, struct device_attribute |
| 991 | *devattr, const char *buf, size_t count) |
| 992 | { |
| 993 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 994 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 995 | unsigned long val = simple_strtoul(buf, NULL, 10) - 1; |
| 996 | ssize_t ret = count; |
| 997 | |
| 998 | mutex_lock(&data->update_lock); |
| 999 | if (val < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) { |
| 1000 | u8 orig_val = data->pwm_settings[attr->index][0]; |
| 1001 | u8 address = data->bank1_address[ABIT_UGURU_TEMP_SENSOR][val]; |
| 1002 | data->pwm_settings[attr->index][0] &= 0xF0; |
| 1003 | data->pwm_settings[attr->index][0] |= address; |
| 1004 | if (data->pwm_settings[attr->index][0] != orig_val) { |
| 1005 | if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, |
| 1006 | attr->index, |
| 1007 | data->pwm_settings[attr->index], |
| 1008 | 5) < 1) { |
| 1009 | data->pwm_settings[attr->index][0] = orig_val; |
| 1010 | ret = -EIO; |
| 1011 | } |
| 1012 | } |
| 1013 | } |
| 1014 | else |
| 1015 | ret = -EINVAL; |
| 1016 | mutex_unlock(&data->update_lock); |
| 1017 | return ret; |
| 1018 | } |
| 1019 | |
| 1020 | static ssize_t show_pwm_enable(struct device *dev, |
| 1021 | struct device_attribute *devattr, char *buf) |
| 1022 | { |
| 1023 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 1024 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 1025 | int res = 0; |
| 1026 | if (data->pwm_settings[attr->index][0] & ABIT_UGURU_FAN_PWM_ENABLE) |
| 1027 | res = 2; |
| 1028 | return sprintf(buf, "%d\n", res); |
| 1029 | } |
| 1030 | |
| 1031 | static ssize_t store_pwm_enable(struct device *dev, struct device_attribute |
| 1032 | *devattr, const char *buf, size_t count) |
| 1033 | { |
| 1034 | struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr); |
| 1035 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 1036 | u8 orig_val, user_val = simple_strtoul(buf, NULL, 10); |
| 1037 | ssize_t ret = count; |
| 1038 | |
| 1039 | mutex_lock(&data->update_lock); |
| 1040 | orig_val = data->pwm_settings[attr->index][0]; |
| 1041 | switch (user_val) { |
| 1042 | case 0: |
| 1043 | data->pwm_settings[attr->index][0] &= |
| 1044 | ~ABIT_UGURU_FAN_PWM_ENABLE; |
| 1045 | break; |
| 1046 | case 2: |
| 1047 | data->pwm_settings[attr->index][0] |= |
| 1048 | ABIT_UGURU_FAN_PWM_ENABLE; |
| 1049 | break; |
| 1050 | default: |
| 1051 | ret = -EINVAL; |
| 1052 | } |
| 1053 | if ((data->pwm_settings[attr->index][0] != orig_val) && |
| 1054 | (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1, |
| 1055 | attr->index, data->pwm_settings[attr->index], |
| 1056 | 5) < 1)) { |
| 1057 | data->pwm_settings[attr->index][0] = orig_val; |
| 1058 | ret = -EIO; |
| 1059 | } |
| 1060 | mutex_unlock(&data->update_lock); |
| 1061 | return ret; |
| 1062 | } |
| 1063 | |
| 1064 | static ssize_t show_name(struct device *dev, |
| 1065 | struct device_attribute *devattr, char *buf) |
| 1066 | { |
| 1067 | return sprintf(buf, "%s\n", ABIT_UGURU_NAME); |
| 1068 | } |
| 1069 | |
| 1070 | /* Sysfs attr templates, the real entries are generated automatically. */ |
| 1071 | static const |
| 1072 | struct sensor_device_attribute_2 abituguru_sysfs_bank1_templ[2][9] = { |
| 1073 | { |
| 1074 | SENSOR_ATTR_2(in%d_input, 0444, show_bank1_value, NULL, 0, 0), |
| 1075 | SENSOR_ATTR_2(in%d_min, 0644, show_bank1_setting, |
| 1076 | store_bank1_setting, 1, 0), |
| 1077 | SENSOR_ATTR_2(in%d_min_alarm, 0444, show_bank1_alarm, NULL, |
| 1078 | ABIT_UGURU_VOLT_LOW_ALARM_FLAG, 0), |
| 1079 | SENSOR_ATTR_2(in%d_max, 0644, show_bank1_setting, |
| 1080 | store_bank1_setting, 2, 0), |
| 1081 | SENSOR_ATTR_2(in%d_max_alarm, 0444, show_bank1_alarm, NULL, |
| 1082 | ABIT_UGURU_VOLT_HIGH_ALARM_FLAG, 0), |
| 1083 | SENSOR_ATTR_2(in%d_beep, 0644, show_bank1_mask, |
| 1084 | store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0), |
| 1085 | SENSOR_ATTR_2(in%d_shutdown, 0644, show_bank1_mask, |
| 1086 | store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), |
| 1087 | SENSOR_ATTR_2(in%d_min_alarm_enable, 0644, show_bank1_mask, |
| 1088 | store_bank1_mask, ABIT_UGURU_VOLT_LOW_ALARM_ENABLE, 0), |
| 1089 | SENSOR_ATTR_2(in%d_max_alarm_enable, 0644, show_bank1_mask, |
| 1090 | store_bank1_mask, ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE, 0), |
| 1091 | }, { |
| 1092 | SENSOR_ATTR_2(temp%d_input, 0444, show_bank1_value, NULL, 0, 0), |
| 1093 | SENSOR_ATTR_2(temp%d_alarm, 0444, show_bank1_alarm, NULL, |
| 1094 | ABIT_UGURU_TEMP_HIGH_ALARM_FLAG, 0), |
| 1095 | SENSOR_ATTR_2(temp%d_max, 0644, show_bank1_setting, |
| 1096 | store_bank1_setting, 1, 0), |
| 1097 | SENSOR_ATTR_2(temp%d_crit, 0644, show_bank1_setting, |
| 1098 | store_bank1_setting, 2, 0), |
| 1099 | SENSOR_ATTR_2(temp%d_beep, 0644, show_bank1_mask, |
| 1100 | store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0), |
| 1101 | SENSOR_ATTR_2(temp%d_shutdown, 0644, show_bank1_mask, |
| 1102 | store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), |
| 1103 | SENSOR_ATTR_2(temp%d_alarm_enable, 0644, show_bank1_mask, |
| 1104 | store_bank1_mask, ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE, 0), |
| 1105 | } |
| 1106 | }; |
| 1107 | |
| 1108 | static const struct sensor_device_attribute_2 abituguru_sysfs_fan_templ[6] = { |
| 1109 | SENSOR_ATTR_2(fan%d_input, 0444, show_bank2_value, NULL, 0, 0), |
| 1110 | SENSOR_ATTR_2(fan%d_alarm, 0444, show_bank2_alarm, NULL, 0, 0), |
| 1111 | SENSOR_ATTR_2(fan%d_min, 0644, show_bank2_setting, |
| 1112 | store_bank2_setting, 1, 0), |
| 1113 | SENSOR_ATTR_2(fan%d_beep, 0644, show_bank2_mask, |
| 1114 | store_bank2_mask, ABIT_UGURU_BEEP_ENABLE, 0), |
| 1115 | SENSOR_ATTR_2(fan%d_shutdown, 0644, show_bank2_mask, |
| 1116 | store_bank2_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0), |
| 1117 | SENSOR_ATTR_2(fan%d_alarm_enable, 0644, show_bank2_mask, |
| 1118 | store_bank2_mask, ABIT_UGURU_FAN_LOW_ALARM_ENABLE, 0), |
| 1119 | }; |
| 1120 | |
| 1121 | static const struct sensor_device_attribute_2 abituguru_sysfs_pwm_templ[6] = { |
| 1122 | SENSOR_ATTR_2(pwm%d_enable, 0644, show_pwm_enable, |
| 1123 | store_pwm_enable, 0, 0), |
| 1124 | SENSOR_ATTR_2(pwm%d_auto_channels_temp, 0644, show_pwm_sensor, |
| 1125 | store_pwm_sensor, 0, 0), |
| 1126 | SENSOR_ATTR_2(pwm%d_auto_point1_pwm, 0644, show_pwm_setting, |
| 1127 | store_pwm_setting, 1, 0), |
| 1128 | SENSOR_ATTR_2(pwm%d_auto_point2_pwm, 0644, show_pwm_setting, |
| 1129 | store_pwm_setting, 2, 0), |
| 1130 | SENSOR_ATTR_2(pwm%d_auto_point1_temp, 0644, show_pwm_setting, |
| 1131 | store_pwm_setting, 3, 0), |
| 1132 | SENSOR_ATTR_2(pwm%d_auto_point2_temp, 0644, show_pwm_setting, |
| 1133 | store_pwm_setting, 4, 0), |
| 1134 | }; |
| 1135 | |
| 1136 | static struct sensor_device_attribute_2 abituguru_sysfs_attr[] = { |
| 1137 | SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0), |
| 1138 | }; |
| 1139 | |
| 1140 | static int __devinit abituguru_probe(struct platform_device *pdev) |
| 1141 | { |
| 1142 | struct abituguru_data *data; |
| 1143 | int i, j, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV; |
| 1144 | char *sysfs_filename; |
| 1145 | |
| 1146 | /* El weirdo probe order, to keep the sysfs order identical to the |
| 1147 | BIOS and window-appliction listing order. */ |
| 1148 | const u8 probe_order[ABIT_UGURU_MAX_BANK1_SENSORS] = { |
| 1149 | 0x00, 0x01, 0x03, 0x04, 0x0A, 0x08, 0x0E, 0x02, |
| 1150 | 0x09, 0x06, 0x05, 0x0B, 0x0F, 0x0D, 0x07, 0x0C }; |
| 1151 | |
| 1152 | if (!(data = kzalloc(sizeof(struct abituguru_data), GFP_KERNEL))) |
| 1153 | return -ENOMEM; |
| 1154 | |
| 1155 | data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; |
| 1156 | mutex_init(&data->update_lock); |
| 1157 | platform_set_drvdata(pdev, data); |
| 1158 | |
| 1159 | /* See if the uGuru is ready */ |
| 1160 | if (inb_p(data->addr + ABIT_UGURU_DATA) == ABIT_UGURU_STATUS_INPUT) |
| 1161 | data->uguru_ready = 1; |
| 1162 | |
| 1163 | /* Completely read the uGuru this has 2 purposes: |
| 1164 | - testread / see if one really is there. |
| 1165 | - make an in memory copy of all the uguru settings for future use. */ |
| 1166 | if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, |
| 1167 | data->alarms, 3, ABIT_UGURU_MAX_RETRIES) != 3) |
| 1168 | goto abituguru_probe_error; |
| 1169 | |
| 1170 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { |
| 1171 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, i, |
| 1172 | &data->bank1_value[i], 1, |
| 1173 | ABIT_UGURU_MAX_RETRIES) != 1) |
| 1174 | goto abituguru_probe_error; |
| 1175 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1+1, i, |
| 1176 | data->bank1_settings[i], 3, |
| 1177 | ABIT_UGURU_MAX_RETRIES) != 3) |
| 1178 | goto abituguru_probe_error; |
| 1179 | } |
| 1180 | /* Note: We don't know how many bank2 sensors / pwms there really are, |
| 1181 | but in order to "detect" this we need to read the maximum amount |
| 1182 | anyways. If we read sensors/pwms not there we'll just read crap |
| 1183 | this can't hurt. We need the detection because we don't want |
| 1184 | unwanted writes, which will hurt! */ |
| 1185 | for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) { |
| 1186 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2, i, |
| 1187 | &data->bank2_value[i], 1, |
| 1188 | ABIT_UGURU_MAX_RETRIES) != 1) |
| 1189 | goto abituguru_probe_error; |
| 1190 | if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2+1, i, |
| 1191 | data->bank2_settings[i], 2, |
| 1192 | ABIT_UGURU_MAX_RETRIES) != 2) |
| 1193 | goto abituguru_probe_error; |
| 1194 | } |
| 1195 | for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) { |
| 1196 | if (abituguru_read(data, ABIT_UGURU_FAN_PWM, i, |
| 1197 | data->pwm_settings[i], 5, |
| 1198 | ABIT_UGURU_MAX_RETRIES) != 5) |
| 1199 | goto abituguru_probe_error; |
| 1200 | } |
| 1201 | data->last_updated = jiffies; |
| 1202 | |
| 1203 | /* Detect sensor types and fill the sysfs attr for bank1 */ |
| 1204 | sysfs_attr_i = 0; |
| 1205 | sysfs_filename = data->sysfs_names; |
| 1206 | sysfs_names_free = ABITUGURU_SYSFS_NAMES_LENGTH; |
| 1207 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { |
| 1208 | res = abituguru_detect_bank1_sensor_type(data, probe_order[i]); |
| 1209 | if (res < 0) |
| 1210 | goto abituguru_probe_error; |
| 1211 | if (res == ABIT_UGURU_NC) |
| 1212 | continue; |
| 1213 | |
| 1214 | /* res 1 (temp) sensors have 7 sysfs entries, 0 (in) 9 */ |
| 1215 | for (j = 0; j < (res ? 7 : 9); j++) { |
| 1216 | used = snprintf(sysfs_filename, sysfs_names_free, |
| 1217 | abituguru_sysfs_bank1_templ[res][j].dev_attr. |
| 1218 | attr.name, data->bank1_sensors[res] + res) |
| 1219 | + 1; |
| 1220 | data->sysfs_attr[sysfs_attr_i] = |
| 1221 | abituguru_sysfs_bank1_templ[res][j]; |
| 1222 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = |
| 1223 | sysfs_filename; |
| 1224 | data->sysfs_attr[sysfs_attr_i].index = probe_order[i]; |
| 1225 | sysfs_filename += used; |
| 1226 | sysfs_names_free -= used; |
| 1227 | sysfs_attr_i++; |
| 1228 | } |
| 1229 | data->bank1_max_value[probe_order[i]] = |
| 1230 | abituguru_bank1_max_value[res]; |
| 1231 | data->bank1_address[res][data->bank1_sensors[res]] = |
| 1232 | probe_order[i]; |
| 1233 | data->bank1_sensors[res]++; |
| 1234 | } |
| 1235 | /* Detect number of sensors and fill the sysfs attr for bank2 (fans) */ |
| 1236 | abituguru_detect_no_bank2_sensors(data); |
| 1237 | for (i = 0; i < data->bank2_sensors; i++) { |
| 1238 | for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_fan_templ); j++) { |
| 1239 | used = snprintf(sysfs_filename, sysfs_names_free, |
| 1240 | abituguru_sysfs_fan_templ[j].dev_attr.attr.name, |
| 1241 | i + 1) + 1; |
| 1242 | data->sysfs_attr[sysfs_attr_i] = |
| 1243 | abituguru_sysfs_fan_templ[j]; |
| 1244 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = |
| 1245 | sysfs_filename; |
| 1246 | data->sysfs_attr[sysfs_attr_i].index = i; |
| 1247 | sysfs_filename += used; |
| 1248 | sysfs_names_free -= used; |
| 1249 | sysfs_attr_i++; |
| 1250 | } |
| 1251 | } |
| 1252 | /* Detect number of sensors and fill the sysfs attr for pwms */ |
| 1253 | abituguru_detect_no_pwms(data); |
| 1254 | for (i = 0; i < data->pwms; i++) { |
| 1255 | for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_pwm_templ); j++) { |
| 1256 | used = snprintf(sysfs_filename, sysfs_names_free, |
| 1257 | abituguru_sysfs_pwm_templ[j].dev_attr.attr.name, |
| 1258 | i + 1) + 1; |
| 1259 | data->sysfs_attr[sysfs_attr_i] = |
| 1260 | abituguru_sysfs_pwm_templ[j]; |
| 1261 | data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = |
| 1262 | sysfs_filename; |
| 1263 | data->sysfs_attr[sysfs_attr_i].index = i; |
| 1264 | sysfs_filename += used; |
| 1265 | sysfs_names_free -= used; |
| 1266 | sysfs_attr_i++; |
| 1267 | } |
| 1268 | } |
| 1269 | /* Fail safe check, this should never happen! */ |
| 1270 | if (sysfs_names_free < 0) { |
| 1271 | printk(KERN_ERR ABIT_UGURU_NAME ": Fatal error ran out of " |
| 1272 | "space for sysfs attr names. This should never " |
| 1273 | "happen please report to the abituguru maintainer " |
| 1274 | "(see MAINTAINERS)\n"); |
| 1275 | res = -ENAMETOOLONG; |
| 1276 | goto abituguru_probe_error; |
| 1277 | } |
| 1278 | printk(KERN_INFO ABIT_UGURU_NAME ": found Abit uGuru\n"); |
| 1279 | |
| 1280 | /* Register sysfs hooks */ |
| 1281 | for (i = 0; i < sysfs_attr_i; i++) |
| 1282 | if (device_create_file(&pdev->dev, |
| 1283 | &data->sysfs_attr[i].dev_attr)) |
| 1284 | goto abituguru_probe_error; |
| 1285 | for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++) |
| 1286 | if (device_create_file(&pdev->dev, |
| 1287 | &abituguru_sysfs_attr[i].dev_attr)) |
| 1288 | goto abituguru_probe_error; |
| 1289 | |
| 1290 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
| 1291 | if (!IS_ERR(data->hwmon_dev)) |
| 1292 | return 0; /* success */ |
| 1293 | |
| 1294 | res = PTR_ERR(data->hwmon_dev); |
| 1295 | abituguru_probe_error: |
| 1296 | for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++) |
| 1297 | device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr); |
| 1298 | for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++) |
| 1299 | device_remove_file(&pdev->dev, |
| 1300 | &abituguru_sysfs_attr[i].dev_attr); |
| 1301 | platform_set_drvdata(pdev, NULL); |
| 1302 | kfree(data); |
| 1303 | return res; |
| 1304 | } |
| 1305 | |
| 1306 | static int __devexit abituguru_remove(struct platform_device *pdev) |
| 1307 | { |
| 1308 | int i; |
| 1309 | struct abituguru_data *data = platform_get_drvdata(pdev); |
| 1310 | |
| 1311 | hwmon_device_unregister(data->hwmon_dev); |
| 1312 | for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++) |
| 1313 | device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr); |
| 1314 | for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++) |
| 1315 | device_remove_file(&pdev->dev, |
| 1316 | &abituguru_sysfs_attr[i].dev_attr); |
| 1317 | platform_set_drvdata(pdev, NULL); |
| 1318 | kfree(data); |
| 1319 | |
| 1320 | return 0; |
| 1321 | } |
| 1322 | |
| 1323 | static struct abituguru_data *abituguru_update_device(struct device *dev) |
| 1324 | { |
| 1325 | int i, err; |
| 1326 | struct abituguru_data *data = dev_get_drvdata(dev); |
| 1327 | /* fake a complete successful read if no update necessary. */ |
| 1328 | char success = 1; |
| 1329 | |
| 1330 | mutex_lock(&data->update_lock); |
| 1331 | if (time_after(jiffies, data->last_updated + HZ)) { |
| 1332 | success = 0; |
| 1333 | if ((err = abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, |
| 1334 | data->alarms, 3, 0)) != 3) |
| 1335 | goto LEAVE_UPDATE; |
| 1336 | for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { |
| 1337 | if ((err = abituguru_read(data, |
| 1338 | ABIT_UGURU_SENSOR_BANK1, i, |
| 1339 | &data->bank1_value[i], 1, 0)) != 1) |
| 1340 | goto LEAVE_UPDATE; |
| 1341 | if ((err = abituguru_read(data, |
| 1342 | ABIT_UGURU_SENSOR_BANK1 + 1, i, |
| 1343 | data->bank1_settings[i], 3, 0)) != 3) |
| 1344 | goto LEAVE_UPDATE; |
| 1345 | } |
| 1346 | for (i = 0; i < data->bank2_sensors; i++) |
| 1347 | if ((err = abituguru_read(data, |
| 1348 | ABIT_UGURU_SENSOR_BANK2, i, |
| 1349 | &data->bank2_value[i], 1, 0)) != 1) |
| 1350 | goto LEAVE_UPDATE; |
| 1351 | /* success! */ |
| 1352 | success = 1; |
| 1353 | data->update_timeouts = 0; |
| 1354 | LEAVE_UPDATE: |
| 1355 | /* handle timeout condition */ |
| 1356 | if (!success && (err == -EBUSY || err >= 0)) { |
| 1357 | /* No overflow please */ |
| 1358 | if (data->update_timeouts < 255u) |
| 1359 | data->update_timeouts++; |
| 1360 | if (data->update_timeouts <= ABIT_UGURU_MAX_TIMEOUTS) { |
| 1361 | ABIT_UGURU_DEBUG(3, "timeout exceeded, will " |
| 1362 | "try again next update\n"); |
| 1363 | /* Just a timeout, fake a successful read */ |
| 1364 | success = 1; |
| 1365 | } else |
| 1366 | ABIT_UGURU_DEBUG(1, "timeout exceeded %d " |
| 1367 | "times waiting for more input state\n", |
| 1368 | (int)data->update_timeouts); |
| 1369 | } |
| 1370 | /* On success set last_updated */ |
| 1371 | if (success) |
| 1372 | data->last_updated = jiffies; |
| 1373 | } |
| 1374 | mutex_unlock(&data->update_lock); |
| 1375 | |
| 1376 | if (success) |
| 1377 | return data; |
| 1378 | else |
| 1379 | return NULL; |
| 1380 | } |
| 1381 | |
| 1382 | #ifdef CONFIG_PM |
| 1383 | static int abituguru_suspend(struct platform_device *pdev, pm_message_t state) |
| 1384 | { |
| 1385 | struct abituguru_data *data = platform_get_drvdata(pdev); |
| 1386 | /* make sure all communications with the uguru are done and no new |
| 1387 | ones are started */ |
| 1388 | mutex_lock(&data->update_lock); |
| 1389 | return 0; |
| 1390 | } |
| 1391 | |
| 1392 | static int abituguru_resume(struct platform_device *pdev) |
| 1393 | { |
| 1394 | struct abituguru_data *data = platform_get_drvdata(pdev); |
| 1395 | /* See if the uGuru is still ready */ |
| 1396 | if (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) |
| 1397 | data->uguru_ready = 0; |
| 1398 | mutex_unlock(&data->update_lock); |
| 1399 | return 0; |
| 1400 | } |
| 1401 | #else |
| 1402 | #define abituguru_suspend NULL |
| 1403 | #define abituguru_resume NULL |
| 1404 | #endif /* CONFIG_PM */ |
| 1405 | |
| 1406 | static struct platform_driver abituguru_driver = { |
| 1407 | .driver = { |
| 1408 | .owner = THIS_MODULE, |
| 1409 | .name = ABIT_UGURU_NAME, |
| 1410 | }, |
| 1411 | .probe = abituguru_probe, |
| 1412 | .remove = __devexit_p(abituguru_remove), |
| 1413 | .suspend = abituguru_suspend, |
| 1414 | .resume = abituguru_resume, |
| 1415 | }; |
| 1416 | |
| 1417 | static int __init abituguru_detect(void) |
| 1418 | { |
| 1419 | /* See if there is an uguru there. After a reboot uGuru will hold 0x00 |
| 1420 | at DATA and 0xAC, when this driver has already been loaded once |
| 1421 | DATA will hold 0x08. For most uGuru's CMD will hold 0xAC in either |
| 1422 | scenario but some will hold 0x00. |
| 1423 | Some uGuru's initally hold 0x09 at DATA and will only hold 0x08 |
| 1424 | after reading CMD first, so CMD must be read first! */ |
| 1425 | u8 cmd_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_CMD); |
| 1426 | u8 data_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_DATA); |
| 1427 | if (((data_val == 0x00) || (data_val == 0x08)) && |
| 1428 | ((cmd_val == 0x00) || (cmd_val == 0xAC))) |
| 1429 | return ABIT_UGURU_BASE; |
| 1430 | |
| 1431 | ABIT_UGURU_DEBUG(2, "no Abit uGuru found, data = 0x%02X, cmd = " |
| 1432 | "0x%02X\n", (unsigned int)data_val, (unsigned int)cmd_val); |
| 1433 | |
| 1434 | if (force) { |
| 1435 | printk(KERN_INFO ABIT_UGURU_NAME ": Assuming Abit uGuru is " |
| 1436 | "present because of \"force\" parameter\n"); |
| 1437 | return ABIT_UGURU_BASE; |
| 1438 | } |
| 1439 | |
| 1440 | /* No uGuru found */ |
| 1441 | return -ENODEV; |
| 1442 | } |
| 1443 | |
| 1444 | static struct platform_device *abituguru_pdev; |
| 1445 | |
| 1446 | static int __init abituguru_init(void) |
| 1447 | { |
| 1448 | int address, err; |
| 1449 | struct resource res = { .flags = IORESOURCE_IO }; |
| 1450 | |
| 1451 | #ifdef CONFIG_DMI |
| 1452 | const char *board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); |
| 1453 | |
| 1454 | /* safety check, refuse to load on non Abit motherboards */ |
| 1455 | if (!force && (!board_vendor || |
| 1456 | strcmp(board_vendor, "http://www.abit.com.tw/"))) |
| 1457 | return -ENODEV; |
| 1458 | #endif |
| 1459 | |
| 1460 | address = abituguru_detect(); |
| 1461 | if (address < 0) |
| 1462 | return address; |
| 1463 | |
| 1464 | err = platform_driver_register(&abituguru_driver); |
| 1465 | if (err) |
| 1466 | goto exit; |
| 1467 | |
| 1468 | abituguru_pdev = platform_device_alloc(ABIT_UGURU_NAME, address); |
| 1469 | if (!abituguru_pdev) { |
| 1470 | printk(KERN_ERR ABIT_UGURU_NAME |
| 1471 | ": Device allocation failed\n"); |
| 1472 | err = -ENOMEM; |
| 1473 | goto exit_driver_unregister; |
| 1474 | } |
| 1475 | |
| 1476 | res.start = address; |
| 1477 | res.end = address + ABIT_UGURU_REGION_LENGTH - 1; |
| 1478 | res.name = ABIT_UGURU_NAME; |
| 1479 | |
| 1480 | err = platform_device_add_resources(abituguru_pdev, &res, 1); |
| 1481 | if (err) { |
| 1482 | printk(KERN_ERR ABIT_UGURU_NAME |
| 1483 | ": Device resource addition failed (%d)\n", err); |
| 1484 | goto exit_device_put; |
| 1485 | } |
| 1486 | |
| 1487 | err = platform_device_add(abituguru_pdev); |
| 1488 | if (err) { |
| 1489 | printk(KERN_ERR ABIT_UGURU_NAME |
| 1490 | ": Device addition failed (%d)\n", err); |
| 1491 | goto exit_device_put; |
| 1492 | } |
| 1493 | |
| 1494 | return 0; |
| 1495 | |
| 1496 | exit_device_put: |
| 1497 | platform_device_put(abituguru_pdev); |
| 1498 | exit_driver_unregister: |
| 1499 | platform_driver_unregister(&abituguru_driver); |
| 1500 | exit: |
| 1501 | return err; |
| 1502 | } |
| 1503 | |
| 1504 | static void __exit abituguru_exit(void) |
| 1505 | { |
| 1506 | platform_device_unregister(abituguru_pdev); |
| 1507 | platform_driver_unregister(&abituguru_driver); |
| 1508 | } |
| 1509 | |
| 1510 | MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>"); |
| 1511 | MODULE_DESCRIPTION("Abit uGuru Sensor device"); |
| 1512 | MODULE_LICENSE("GPL"); |
| 1513 | |
| 1514 | module_init(abituguru_init); |
| 1515 | module_exit(abituguru_exit); |