diff options
Diffstat (limited to 'drivers/hwmon/abituguru3.c')
| -rw-r--r-- | drivers/hwmon/abituguru3.c | 211 |
1 files changed, 129 insertions, 82 deletions
diff --git a/drivers/hwmon/abituguru3.c b/drivers/hwmon/abituguru3.c index 93ab1a5001c7..a5bc4287daa6 100644 --- a/drivers/hwmon/abituguru3.c +++ b/drivers/hwmon/abituguru3.c @@ -1,28 +1,28 @@ /* - abituguru3.c - - Copyright (c) 2006-2008 Hans de Goede <hdegoede@redhat.com> - Copyright (c) 2008 Alistair John Strachan <alistair@devzero.co.uk> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ + * abituguru3.c + * + * Copyright (c) 2006-2008 Hans de Goede <hdegoede@redhat.com> + * Copyright (c) 2008 Alistair John Strachan <alistair@devzero.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ /* - This driver supports the sensor part of revision 3 of the custom Abit uGuru - chip found on newer Abit uGuru motherboards. Note: because of lack of specs - only reading the sensors and their settings is supported. -*/ + * This driver supports the sensor part of revision 3 of the custom Abit uGuru + * chip found on newer Abit uGuru motherboards. Note: because of lack of specs + * only reading the sensors and their settings is supported. + */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -62,13 +62,17 @@ #define ABIT_UGURU3_TEMP_SENSOR 1 #define ABIT_UGURU3_FAN_SENSOR 2 -/* Timeouts / Retries, if these turn out to need a lot of fiddling we could - convert them to params. Determined by trial and error. I assume this is - cpu-speed independent, since the ISA-bus and not the CPU should be the - bottleneck. */ +/* + * Timeouts / Retries, if these turn out to need a lot of fiddling we could + * convert them to params. Determined by trial and error. I assume this is + * cpu-speed independent, since the ISA-bus and not the CPU should be the + * bottleneck. + */ #define ABIT_UGURU3_WAIT_TIMEOUT 250 -/* Normally the 0xAC at the end of synchronize() is reported after the - first read, but sometimes not and we need to poll */ +/* + * Normally the 0xAC at the end of synchronize() is reported after the + * first read, but sometimes not and we need to poll + */ #define ABIT_UGURU3_SYNCHRONIZE_TIMEOUT 5 /* utility macros */ #define ABIT_UGURU3_NAME "abituguru3" @@ -78,33 +82,45 @@ /* Macros to help calculate the sysfs_names array length */ #define ABIT_UGURU3_MAX_NO_SENSORS 26 -/* sum of strlen +1 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, in??_label\0 */ +/* + * sum of strlen +1 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, in??_label\0 + */ #define ABIT_UGURU3_IN_NAMES_LENGTH \ (11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14 + 11) -/* sum of strlen +1 of: temp??_input\0, temp??_max\0, temp??_crit\0, - temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0, - temp??_label\0 */ +/* + * sum of strlen +1 of: temp??_input\0, temp??_max\0, temp??_crit\0, + * temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0, + * temp??_label\0 + */ #define ABIT_UGURU3_TEMP_NAMES_LENGTH (13 + 11 + 12 + 13 + 20 + 12 + 16 + 13) -/* sum of strlen +1 of: fan??_input\0, fan??_min\0, fan??_alarm\0, - fan??_alarm_enable\0, fan??_beep\0, fan??_shutdown\0, fan??_label\0 */ +/* + * sum of strlen +1 of: fan??_input\0, fan??_min\0, fan??_alarm\0, + * fan??_alarm_enable\0, fan??_beep\0, fan??_shutdown\0, fan??_label\0 + */ #define ABIT_UGURU3_FAN_NAMES_LENGTH (12 + 10 + 12 + 19 + 11 + 15 + 12) -/* Worst case scenario 16 in sensors (longest names_length) and the rest - temp sensors (second longest names_length). */ +/* + * Worst case scenario 16 in sensors (longest names_length) and the rest + * temp sensors (second longest names_length). + */ #define ABIT_UGURU3_SYSFS_NAMES_LENGTH (16 * ABIT_UGURU3_IN_NAMES_LENGTH + \ (ABIT_UGURU3_MAX_NO_SENSORS - 16) * ABIT_UGURU3_TEMP_NAMES_LENGTH) -/* All the macros below are named identical to the openguru2 program - reverse engineered by Louis Kruger, 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. */ +/* + * All the macros below are named identical to the openguru2 program + * reverse engineered by Louis Kruger, 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. + */ /* Two i/o-ports are used by uGuru */ #define ABIT_UGURU3_BASE 0x00E0 #define ABIT_UGURU3_CMD 0x00 #define ABIT_UGURU3_DATA 0x04 #define ABIT_UGURU3_REGION_LENGTH 5 -/* The wait_xxx functions return this on success and the last contents - of the DATA register (0-255) on failure. */ +/* + * The wait_xxx functions return this on success and the last contents + * of the DATA register (0-255) on failure. + */ #define ABIT_UGURU3_SUCCESS -1 /* uGuru status flags */ #define ABIT_UGURU3_STATUS_READY_FOR_READ 0x01 @@ -131,9 +147,11 @@ struct abituguru3_motherboard_info { struct abituguru3_sensor_info sensors[ABIT_UGURU3_MAX_NO_SENSORS + 1]; }; -/* For the Abit uGuru, we need to keep some data in memory. - The structure is dynamically allocated, at the same time when a new - abituguru3 device is allocated. */ +/* + * For the Abit uGuru, we need to keep some data in memory. + * The structure is dynamically allocated, at the same time when a new + * abituguru3 device is allocated. + */ struct abituguru3_data { struct device *hwmon_dev; /* hwmon registered device */ struct mutex update_lock; /* protect access to data and uGuru */ @@ -141,8 +159,10 @@ struct abituguru3_data { char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ - /* For convenience the sysfs attr and their names are generated - automatically. We have max 10 entries per sensor (for in sensors) */ + /* + * For convenience the sysfs attr and their names are generated + * automatically. We have max 10 entries per sensor (for in sensors) + */ struct sensor_device_attribute_2 sysfs_attr[ABIT_UGURU3_MAX_NO_SENSORS * 10]; @@ -152,9 +172,11 @@ struct abituguru3_data { /* Pointer to the sensors info for the detected motherboard */ const struct abituguru3_sensor_info *sensors; - /* The abituguru3 supports up to 48 sensors, and thus has registers - sets for 48 sensors, for convienence reasons / simplicity of the - code we always read and store all registers for all 48 sensors */ + /* + * The abituguru3 supports up to 48 sensors, and thus has registers + * sets for 48 sensors, for convienence reasons / simplicity of the + * code we always read and store all registers for all 48 sensors + */ /* Alarms for all 48 sensors (1 bit per sensor) */ u8 alarms[48/8]; @@ -162,9 +184,11 @@ struct abituguru3_data { /* Value of all 48 sensors */ u8 value[48]; - /* Settings of all 48 sensors, note in and temp sensors (the first 32 - sensors) have 3 bytes of settings, while fans only have 2 bytes, - for convenience we use 3 bytes for all sensors */ + /* + * Settings of all 48 sensors, note in and temp sensors (the first 32 + * sensors) have 3 bytes of settings, while fans only have 2 bytes, + * for convenience we use 3 bytes for all sensors + */ u8 settings[48][3]; }; @@ -627,8 +651,10 @@ static int abituguru3_wait_while_busy(struct abituguru3_data *data) timeout--; if (timeout == 0) return x; - /* sleep a bit before our last try, to give the uGuru3 one - last chance to respond. */ + /* + * sleep a bit before our last try, to give the uGuru3 one + * last chance to respond. + */ if (timeout == 1) msleep(1); } @@ -646,16 +672,20 @@ static int abituguru3_wait_for_read(struct abituguru3_data *data) timeout--; if (timeout == 0) return x; - /* sleep a bit before our last try, to give the uGuru3 one - last chance to respond. */ + /* + * sleep a bit before our last try, to give the uGuru3 one + * last chance to respond. + */ if (timeout == 1) msleep(1); } return ABIT_UGURU3_SUCCESS; } -/* This synchronizes us with the uGuru3's protocol state machine, this - must be done before each command. */ +/* + * This synchronizes us with the uGuru3's protocol state machine, this + * must be done before each command. + */ static int abituguru3_synchronize(struct abituguru3_data *data) { int x, timeout = ABIT_UGURU3_SYNCHRONIZE_TIMEOUT; @@ -711,8 +741,10 @@ static int abituguru3_synchronize(struct abituguru3_data *data) return 0; } -/* Read count bytes from sensor sensor_addr in bank bank_addr and store the - result in buf */ +/* + * Read count bytes from sensor sensor_addr in bank bank_addr and store the + * result in buf + */ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset, u8 count, u8 *buf) { @@ -771,8 +803,10 @@ static int abituguru3_read(struct abituguru3_data *data, u8 bank, u8 offset, return i; } -/* Sensor settings are stored 1 byte per offset with the bytes - placed add consecutive offsets. */ +/* + * Sensor settings are stored 1 byte per offset with the bytes + * placed add consecutive offsets. + */ static int abituguru3_read_increment_offset(struct abituguru3_data *data, u8 bank, u8 offset, u8 count, u8 *buf, int offset_count) @@ -792,9 +826,11 @@ static int abituguru3_read_increment_offset(struct abituguru3_data *data, return i * count; } -/* Following are the sysfs callback functions. These functions expect: - sensor_device_attribute_2->index: index into the data->sensors array - sensor_device_attribute_2->nr: register offset, bitmask or NA. */ +/* + * Following are the sysfs callback functions. These functions expect: + * sensor_device_attribute_2->index: index into the data->sensors array + * sensor_device_attribute_2->nr: register offset, bitmask or NA. + */ static struct abituguru3_data *abituguru3_update_device(struct device *dev); static ssize_t show_value(struct device *dev, @@ -820,8 +856,10 @@ static ssize_t show_value(struct device *dev, value = (value * sensor->multiplier) / sensor->divisor + sensor->offset; - /* alternatively we could update the sensors settings struct for this, - but then its contents would differ from the windows sw ini files */ + /* + * alternatively we could update the sensors settings struct for this, + * but then its contents would differ from the windows sw ini files + */ if (sensor->type == ABIT_UGURU3_TEMP_SENSOR) value *= 1000; @@ -840,10 +878,12 @@ static ssize_t show_alarm(struct device *dev, port = data->sensors[attr->index].port; - /* See if the alarm bit for this sensor is set and if a bitmask is - given in attr->nr also check if the alarm matches the type of alarm - we're looking for (for volt it can be either low or high). The type - is stored in a few readonly bits in the settings of the sensor. */ + /* + * See if the alarm bit for this sensor is set and if a bitmask is + * given in attr->nr also check if the alarm matches the type of alarm + * we're looking for (for volt it can be either low or high). The type + * is stored in a few readonly bits in the settings of the sensor. + */ if ((data->alarms[port / 8] & (0x01 << (port % 8))) && (!attr->nr || (data->settings[port][0] & attr->nr))) return sprintf(buf, "1\n"); @@ -1105,8 +1145,10 @@ LEAVE_UPDATE: static int abituguru3_suspend(struct platform_device *pdev, pm_message_t state) { struct abituguru3_data *data = platform_get_drvdata(pdev); - /* make sure all communications with the uguru3 are done and no new - ones are started */ + /* + * make sure all communications with the uguru3 are done and no new + * ones are started + */ mutex_lock(&data->update_lock); return 0; } @@ -1148,7 +1190,8 @@ static int __init abituguru3_dmi_detect(void) if (!board_name) return err; - /* At the moment, we don't care about the part of the vendor + /* + * At the moment, we don't care about the part of the vendor * DMI string contained in brackets. Truncate the string at * the first occurrence of a bracket. Trim any trailing space * from the substring. @@ -1171,15 +1214,18 @@ static int __init abituguru3_dmi_detect(void) return 1; } -/* FIXME: Manual detection should die eventually; we need to collect stable +/* + * FIXME: Manual detection should die eventually; we need to collect stable * DMI model names first before we can rely entirely on CONFIG_DMI. */ static int __init abituguru3_detect(void) { - /* See if there is an uguru3 there. An idle uGuru3 will hold 0x00 or - 0x08 at DATA and 0xAC at CMD. Sometimes the uGuru3 will hold 0x05 - or 0x55 at CMD instead, why is unknown. */ + /* + * See if there is an uguru3 there. An idle uGuru3 will hold 0x00 or + * 0x08 at DATA and 0xAC at CMD. Sometimes the uGuru3 will hold 0x05 + * or 0x55 at CMD instead, why is unknown. + */ u8 data_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_DATA); u8 cmd_val = inb_p(ABIT_UGURU3_BASE + ABIT_UGURU3_CMD); if (((data_val == 0x00) || (data_val == 0x08)) && @@ -1211,7 +1257,8 @@ static int __init abituguru3_init(void) if (err < 0) return err; - /* Fall back to manual detection if there was no exact + /* + * Fall back to manual detection if there was no exact * board name match, or force was specified. */ if (err > 0) { |