diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hwmon/abituguru.c | 197 |
1 files changed, 111 insertions, 86 deletions
diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c index bf2cb0aa69b..ab80b418bd6 100644 --- a/drivers/hwmon/abituguru.c +++ b/drivers/hwmon/abituguru.c @@ -36,6 +36,10 @@ #define ABIT_UGURU_SENSOR_BANK1 0x21 /* 16x volt and temp */ #define ABIT_UGURU_FAN_PWM 0x24 /* 3x 5 bytes */ #define ABIT_UGURU_SENSOR_BANK2 0x26 /* fans */ +/* max nr of sensors in bank1, a bank1 sensor can be in, temp or nc */ +#define ABIT_UGURU_MAX_BANK1_SENSORS 16 +/* Warning if you increase one of the 2 MAX defines below to 10 or higher you + should adjust the belonging _NAMES_LENGTH macro for the 2 digit number! */ /* max nr of sensors in bank2, currently mb's with max 6 fans are known */ #define ABIT_UGURU_MAX_BANK2_SENSORS 6 /* max nr of pwm outputs, currently mb's with max 5 pwm outputs are known */ @@ -74,10 +78,33 @@ /* Maximum 3 retries on timedout reads/writes, delay 200 ms before retrying */ #define ABIT_UGURU_MAX_RETRIES 3 #define ABIT_UGURU_RETRY_DELAY (HZ/5) -/* Maximum 2 timeouts in abituguru_update_device, iow 3 in a row is a error */ +/* Maximum 2 timeouts in abituguru_update_device, iow 3 in a row is an error */ #define ABIT_UGURU_MAX_TIMEOUTS 2 - -/* All the variables below are named identical to the oguru and oguru2 programs +/* utility macros */ +#define ABIT_UGURU_NAME "abituguru" +#define ABIT_UGURU_DEBUG(level, format, arg...) \ + if (level <= verbose) \ + printk(KERN_DEBUG ABIT_UGURU_NAME ": " format , ## arg) +/* Macros to help calculate the sysfs_names array length */ +/* sum of strlen of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0, + in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0 */ +#define ABITUGURU_IN_NAMES_LENGTH (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14) +/* sum of strlen of: temp??_input\0, temp??_max\0, temp??_crit\0, + temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0 */ +#define ABITUGURU_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16) +/* sum of strlen of: fan?_input\0, fan?_min\0, fan?_alarm\0, + fan?_alarm_enable\0, fan?_beep\0, fan?_shutdown\0 */ +#define ABITUGURU_FAN_NAMES_LENGTH (11 + 9 + 11 + 18 + 10 + 14) +/* sum of strlen of: pwm?_enable\0, pwm?_auto_channels_temp\0, + pwm?_auto_point{1,2}_pwm\0, pwm?_auto_point{1,2}_temp\0 */ +#define ABITUGURU_PWM_NAMES_LENGTH (12 + 24 + 2 * 21 + 2 * 22) +/* IN_NAMES_LENGTH > TEMP_NAMES_LENGTH so assume all bank1 sensors are in */ +#define ABITUGURU_SYSFS_NAMES_LENGTH ( \ + ABIT_UGURU_MAX_BANK1_SENSORS * ABITUGURU_IN_NAMES_LENGTH + \ + ABIT_UGURU_MAX_BANK2_SENSORS * ABITUGURU_FAN_NAMES_LENGTH + \ + ABIT_UGURU_MAX_PWMS * ABITUGURU_PWM_NAMES_LENGTH) + +/* All the macros below are named identical to the oguru and oguru2 programs reverse engineered by Olle Sandberg, hence the names might not be 100% logical. I could come up with better names, but I prefer keeping the names identical so that this driver can be compared with his work more easily. */ @@ -93,11 +120,6 @@ #define ABIT_UGURU_STATUS_READ 0x01 /* Ready to be read */ #define ABIT_UGURU_STATUS_INPUT 0x08 /* More input */ #define ABIT_UGURU_STATUS_READY 0x09 /* Ready to be written */ -/* utility macros */ -#define ABIT_UGURU_NAME "abituguru" -#define ABIT_UGURU_DEBUG(level, format, arg...) \ - if (level <= verbose) \ - printk(KERN_DEBUG ABIT_UGURU_NAME ": " format , ## arg) /* Constants */ /* in (Volt) sensors go up to 3494 mV, temp to 255000 millidegrees Celsius */ @@ -156,24 +178,23 @@ struct abituguru_data { of a sensor is a volt or a temp sensor, for bank2 and the pwms its easier todo things the same way. For in sensors we have 9 (temp 7) sysfs entries per sensor, for bank2 and pwms 6. */ - struct sensor_device_attribute_2 sysfs_attr[16 * 9 + + struct sensor_device_attribute_2 sysfs_attr[ + ABIT_UGURU_MAX_BANK1_SENSORS * 9 + ABIT_UGURU_MAX_BANK2_SENSORS * 6 + ABIT_UGURU_MAX_PWMS * 6]; - /* Buffer to store the dynamically generated sysfs names, we need 2120 - bytes for bank1 (worst case scenario of 16 in sensors), 444 bytes - for fan1-6 and 738 bytes for pwm1-6 + some room to spare in case I - miscounted :) */ - char bank1_names[3400]; + /* Buffer to store the dynamically generated sysfs names */ + char sysfs_names[ABITUGURU_SYSFS_NAMES_LENGTH]; /* Bank 1 data */ - u8 bank1_sensors[2]; /* number of [0] in, [1] temp sensors */ - u8 bank1_address[2][16];/* addresses of [0] in, [1] temp sensors */ - u8 bank1_value[16]; - /* This array holds 16 x 3 entries for all the bank 1 sensor settings + /* number of and addresses of [0] in, [1] temp sensors */ + u8 bank1_sensors[2]; + u8 bank1_address[2][ABIT_UGURU_MAX_BANK1_SENSORS]; + u8 bank1_value[ABIT_UGURU_MAX_BANK1_SENSORS]; + /* This array holds 3 entries per sensor for the bank 1 sensor settings (flags, min, max for voltage / flags, warn, shutdown for temp). */ - u8 bank1_settings[16][3]; + u8 bank1_settings[ABIT_UGURU_MAX_BANK1_SENSORS][3]; /* Maximum value for each sensor used for scaling in mV/millidegrees Celsius. */ - int bank1_max_value[16]; + int bank1_max_value[ABIT_UGURU_MAX_BANK1_SENSORS]; /* Bank 2 data, ABIT_UGURU_MAX_BANK2_SENSORS entries for bank2 */ u8 bank2_sensors; /* actual number of bank2 sensors found */ @@ -379,7 +400,7 @@ abituguru_detect_bank1_sensor_type(struct abituguru_data *data, /* First read the sensor and the current settings */ if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, sensor_addr, &val, 1, ABIT_UGURU_MAX_RETRIES) != 1) - return -EIO; + return -ENODEV; /* Test val is sane / usable for sensor type detection. */ if ((val < 10u) || (val > 240u)) { @@ -401,7 +422,7 @@ abituguru_detect_bank1_sensor_type(struct abituguru_data *data, buf[2] = 250; if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, buf, 3) != 3) - return -EIO; + return -ENODEV; /* Now we need 20 ms to give the uguru time to read the sensors and raise a voltage alarm */ set_current_state(TASK_UNINTERRUPTIBLE); @@ -409,19 +430,19 @@ abituguru_detect_bank1_sensor_type(struct abituguru_data *data, /* Check for alarm and check the alarm is a volt low alarm. */ if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, ABIT_UGURU_MAX_RETRIES) != 3) - return -EIO; + return -ENODEV; if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, sensor_addr, buf, 3, ABIT_UGURU_MAX_RETRIES) != 3) - return -EIO; + return -ENODEV; if (buf[0] & ABIT_UGURU_VOLT_LOW_ALARM_FLAG) { /* Restore original settings */ if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, data->bank1_settings[sensor_addr], 3) != 3) - return -EIO; + return -ENODEV; ABIT_UGURU_DEBUG(2, " found volt sensor\n"); return ABIT_UGURU_IN_SENSOR; } else @@ -439,7 +460,7 @@ abituguru_detect_bank1_sensor_type(struct abituguru_data *data, buf[2] = 10; if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, buf, 3) != 3) - return -EIO; + return -ENODEV; /* Now we need 50 ms to give the uguru time to read the sensors and raise a temp alarm */ set_current_state(TASK_UNINTERRUPTIBLE); @@ -447,12 +468,12 @@ abituguru_detect_bank1_sensor_type(struct abituguru_data *data, /* Check for alarm and check the alarm is a temp high alarm. */ if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3, ABIT_UGURU_MAX_RETRIES) != 3) - return -EIO; + return -ENODEV; if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) { if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1, sensor_addr, buf, 3, ABIT_UGURU_MAX_RETRIES) != 3) - return -EIO; + return -ENODEV; if (buf[0] & ABIT_UGURU_TEMP_HIGH_ALARM_FLAG) { ret = ABIT_UGURU_TEMP_SENSOR; ABIT_UGURU_DEBUG(2, " found temp sensor\n"); @@ -466,7 +487,7 @@ abituguru_detect_bank1_sensor_type(struct abituguru_data *data, /* Restore original settings */ if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr, data->bank1_settings[sensor_addr], 3) != 3) - return -EIO; + return -ENODEV; return ret; } @@ -1061,21 +1082,21 @@ static const struct sensor_device_attribute_2 abituguru_sysfs_pwm_templ[6] = { store_pwm_setting, 4, 0), }; -static const struct sensor_device_attribute_2 abituguru_sysfs_attr[] = { +static struct sensor_device_attribute_2 abituguru_sysfs_attr[] = { SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0), }; static int __devinit abituguru_probe(struct platform_device *pdev) { struct abituguru_data *data; - int i, j, res; + int i, j, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV; char *sysfs_filename; - int sysfs_attr_i = 0; /* El weirdo probe order, to keep the sysfs order identical to the BIOS and window-appliction listing order. */ - const u8 probe_order[16] = { 0x00, 0x01, 0x03, 0x04, 0x0A, 0x08, 0x0E, - 0x02, 0x09, 0x06, 0x05, 0x0B, 0x0F, 0x0D, 0x07, 0x0C }; + const u8 probe_order[ABIT_UGURU_MAX_BANK1_SENSORS] = { + 0x00, 0x01, 0x03, 0x04, 0x0A, 0x08, 0x0E, 0x02, + 0x09, 0x06, 0x05, 0x0B, 0x0F, 0x0D, 0x07, 0x0C }; if (!(data = kzalloc(sizeof(struct abituguru_data), GFP_KERNEL))) return -ENOMEM; @@ -1092,24 +1113,18 @@ static int __devinit abituguru_probe(struct platform_device *pdev) - testread / see if one really is there. - make an in memory copy of all the uguru settings for future use. */ if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, - data->alarms, 3, ABIT_UGURU_MAX_RETRIES) != 3) { - kfree(data); - return -ENODEV; - } + data->alarms, 3, ABIT_UGURU_MAX_RETRIES) != 3) + goto abituguru_probe_error; - for (i = 0; i < 16; i++) { + for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, i, &data->bank1_value[i], 1, - ABIT_UGURU_MAX_RETRIES) != 1) { - kfree(data); - return -ENODEV; - } + ABIT_UGURU_MAX_RETRIES) != 1) + goto abituguru_probe_error; if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1+1, i, data->bank1_settings[i], 3, - ABIT_UGURU_MAX_RETRIES) != 3) { - kfree(data); - return -ENODEV; - } + ABIT_UGURU_MAX_RETRIES) != 3) + goto abituguru_probe_error; } /* Note: We don't know how many bank2 sensors / pwms there really are, but in order to "detect" this we need to read the maximum amount @@ -1119,48 +1134,45 @@ static int __devinit abituguru_probe(struct platform_device *pdev) for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) { if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2, i, &data->bank2_value[i], 1, - ABIT_UGURU_MAX_RETRIES) != 1) { - kfree(data); - return -ENODEV; - } + ABIT_UGURU_MAX_RETRIES) != 1) + goto abituguru_probe_error; if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2+1, i, data->bank2_settings[i], 2, - ABIT_UGURU_MAX_RETRIES) != 2) { - kfree(data); - return -ENODEV; - } + ABIT_UGURU_MAX_RETRIES) != 2) + goto abituguru_probe_error; } for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) { if (abituguru_read(data, ABIT_UGURU_FAN_PWM, i, data->pwm_settings[i], 5, - ABIT_UGURU_MAX_RETRIES) != 5) { - kfree(data); - return -ENODEV; - } + ABIT_UGURU_MAX_RETRIES) != 5) + goto abituguru_probe_error; } data->last_updated = jiffies; /* Detect sensor types and fill the sysfs attr for bank1 */ - sysfs_filename = data->bank1_names; - for (i = 0; i < 16; i++) { + sysfs_attr_i = 0; + sysfs_filename = data->sysfs_names; + sysfs_names_free = ABITUGURU_SYSFS_NAMES_LENGTH; + for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { res = abituguru_detect_bank1_sensor_type(data, probe_order[i]); - if (res < 0) { - kfree(data); - return -ENODEV; - } + if (res < 0) + goto abituguru_probe_error; if (res == ABIT_UGURU_NC) continue; + /* res 1 (temp) sensors have 7 sysfs entries, 0 (in) 9 */ for (j = 0; j < (res ? 7 : 9); j++) { - const char *name_templ = abituguru_sysfs_bank1_templ[ - res][j].dev_attr.attr.name; + used = snprintf(sysfs_filename, sysfs_names_free, + abituguru_sysfs_bank1_templ[res][j].dev_attr. + attr.name, data->bank1_sensors[res] + res) + + 1; data->sysfs_attr[sysfs_attr_i] = abituguru_sysfs_bank1_templ[res][j]; data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = sysfs_filename; - sysfs_filename += sprintf(sysfs_filename, name_templ, - data->bank1_sensors[res] + res) + 1; data->sysfs_attr[sysfs_attr_i].index = probe_order[i]; + sysfs_filename += used; + sysfs_names_free -= used; sysfs_attr_i++; } data->bank1_max_value[probe_order[i]] = @@ -1172,52 +1184,65 @@ static int __devinit abituguru_probe(struct platform_device *pdev) /* Detect number of sensors and fill the sysfs attr for bank2 (fans) */ abituguru_detect_no_bank2_sensors(data); for (i = 0; i < data->bank2_sensors; i++) { - for (j = 0; j < 6; j++) { - const char *name_templ = abituguru_sysfs_fan_templ[j]. - dev_attr.attr.name; + for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_fan_templ); j++) { + used = snprintf(sysfs_filename, sysfs_names_free, + abituguru_sysfs_fan_templ[j].dev_attr.attr.name, + i + 1) + 1; data->sysfs_attr[sysfs_attr_i] = abituguru_sysfs_fan_templ[j]; data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = sysfs_filename; - sysfs_filename += sprintf(sysfs_filename, name_templ, - i + 1) + 1; data->sysfs_attr[sysfs_attr_i].index = i; + sysfs_filename += used; + sysfs_names_free -= used; sysfs_attr_i++; } } /* Detect number of sensors and fill the sysfs attr for pwms */ abituguru_detect_no_pwms(data); for (i = 0; i < data->pwms; i++) { - for (j = 0; j < 6; j++) { - const char *name_templ = abituguru_sysfs_pwm_templ[j]. - dev_attr.attr.name; + for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_pwm_templ); j++) { + used = snprintf(sysfs_filename, sysfs_names_free, + abituguru_sysfs_pwm_templ[j].dev_attr.attr.name, + i + 1) + 1; data->sysfs_attr[sysfs_attr_i] = abituguru_sysfs_pwm_templ[j]; data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name = sysfs_filename; - sysfs_filename += sprintf(sysfs_filename, name_templ, - i + 1) + 1; data->sysfs_attr[sysfs_attr_i].index = i; + sysfs_filename += used; + sysfs_names_free -= used; sysfs_attr_i++; } } - /* Last add any "generic" entries to sysfs */ - for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++) { - data->sysfs_attr[sysfs_attr_i] = abituguru_sysfs_attr[i]; - sysfs_attr_i++; + /* Fail safe check, this should never happen! */ + if (sysfs_names_free < 0) { + printk(KERN_ERR ABIT_UGURU_NAME ": Fatal error ran out of " + "space for sysfs attr names. This should never " + "happen please report to the abituguru maintainer " + "(see MAINTAINERS)\n"); + res = -ENAMETOOLONG; + goto abituguru_probe_error; } printk(KERN_INFO ABIT_UGURU_NAME ": found Abit uGuru\n"); /* Register sysfs hooks */ data->class_dev = hwmon_device_register(&pdev->dev); if (IS_ERR(data->class_dev)) { - kfree(data); - return PTR_ERR(data->class_dev); + res = PTR_ERR(data->class_dev); + goto abituguru_probe_error; } for (i = 0; i < sysfs_attr_i; i++) device_create_file(&pdev->dev, &data->sysfs_attr[i].dev_attr); + for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++) + device_create_file(&pdev->dev, + &abituguru_sysfs_attr[i].dev_attr); return 0; + +abituguru_probe_error: + kfree(data); + return res; } static int __devexit abituguru_remove(struct platform_device *pdev) @@ -1244,7 +1269,7 @@ static struct abituguru_data *abituguru_update_device(struct device *dev) if ((err = abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, data->alarms, 3, 0)) != 3) goto LEAVE_UPDATE; - for (i = 0; i < 16; i++) { + for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) { if ((err = abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, i, &data->bank1_value[i], 1, 0)) != 1) |