/*
   * 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.
   */
  
  #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/slab.h>
  #include <linux/jiffies.h>
  #include <linux/mutex.h>
  #include <linux/err.h>
  #include <linux/delay.h>
  #include <linux/platform_device.h>
  #include <linux/hwmon.h>
  #include <linux/hwmon-sysfs.h>
  #include <linux/dmi.h>
  #include <linux/io.h>
  
  /* uGuru3 bank addresses */
  #define ABIT_UGURU3_SETTINGS_BANK		0x01
  #define ABIT_UGURU3_SENSORS_BANK		0x08
  #define ABIT_UGURU3_MISC_BANK			0x09
  #define ABIT_UGURU3_ALARMS_START		0x1E
  #define ABIT_UGURU3_SETTINGS_START		0x24
  #define ABIT_UGURU3_VALUES_START		0x80
  #define ABIT_UGURU3_BOARD_ID			0x0A
  /* uGuru3 sensor bank flags */			     /* Alarm if: */
  #define ABIT_UGURU3_TEMP_HIGH_ALARM_ENABLE	0x01 /*  temp over warn */
  #define ABIT_UGURU3_VOLT_HIGH_ALARM_ENABLE	0x02 /*  volt over max */
  #define ABIT_UGURU3_VOLT_LOW_ALARM_ENABLE	0x04 /*  volt under min */
  #define ABIT_UGURU3_TEMP_HIGH_ALARM_FLAG	0x10 /* temp is over warn */
  #define ABIT_UGURU3_VOLT_HIGH_ALARM_FLAG	0x20 /* volt is over max */
  #define ABIT_UGURU3_VOLT_LOW_ALARM_FLAG		0x40 /* volt is under min */
  #define ABIT_UGURU3_FAN_LOW_ALARM_ENABLE	0x01 /*   fan under min */
  #define ABIT_UGURU3_BEEP_ENABLE			0x08 /* beep if alarm */
  #define ABIT_UGURU3_SHUTDOWN_ENABLE		0x80 /* shutdown if alarm */
  /* sensor types */
  #define ABIT_UGURU3_IN_SENSOR			0
  #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.
   */
  #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
   */
  #define ABIT_UGURU3_SYNCHRONIZE_TIMEOUT		5
  /* utility macros */
  #define ABIT_UGURU3_NAME			"abituguru3"
  #define ABIT_UGURU3_DEBUG(format, arg...)		\
  	do {						\
  		if (verbose)				\
  			pr_debug(format , ## arg);	\
  	} while (0)
  
  /* 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
   */
  #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
   */
  #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
   */
  #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).
   */
  #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.
   */
  /* 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.
   */
  #define ABIT_UGURU3_SUCCESS			-1
  /* uGuru status flags */
  #define ABIT_UGURU3_STATUS_READY_FOR_READ	0x01
  #define ABIT_UGURU3_STATUS_BUSY			0x02
  
  
  /* Structures */
  struct abituguru3_sensor_info {
  	const char *name;
  	int port;
  	int type;
  	int multiplier;
  	int divisor;
  	int offset;
  };
  
  /* Avoid use of flexible array members */
  #define ABIT_UGURU3_MAX_DMI_NAMES 2
  
  struct abituguru3_motherboard_info {
  	u16 id;
  	const char *dmi_name[ABIT_UGURU3_MAX_DMI_NAMES + 1];
  	/* + 1 -> end of sensors indicated by a sensor with name == NULL */
  	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.
   */
  struct abituguru3_data {
  	struct device *hwmon_dev;	/* hwmon registered device */
  	struct mutex update_lock;	/* protect access to data and uGuru */
  	unsigned short addr;		/* uguru base address */
  	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)
  	 */
  	struct sensor_device_attribute_2 sysfs_attr[ABIT_UGURU3_MAX_NO_SENSORS
  		* 10];
  
  	/* Buffer to store the dynamically generated sysfs names */
  	char sysfs_names[ABIT_UGURU3_SYSFS_NAMES_LENGTH];
  
  	/* 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 convenience 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];
  
  	/* 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
  	 */
  	u8 settings[48][3];
  };
  
  
  /* Constants */
  static const struct abituguru3_motherboard_info abituguru3_motherboards[] = {
  	{ 0x000C, { NULL } /* Unknown, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 10, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
  		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS FAN",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x000D, { NULL } /* Abit AW8, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 10, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
  		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM1",		26, 1, 1, 1, 0 },
  		{ "PWM2",		27, 1, 1, 1, 0 },
  		{ "PWM3",		28, 1, 1, 1, 0 },
  		{ "PWM4",		29, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
  		{ "AUX4 Fan",		38, 2, 60, 1, 0 },
  		{ "AUX5 Fan",		39, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x000E, { NULL } /* AL-8, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 10, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
  		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x000F, { NULL } /* Unknown, need DMI string */, {
  
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 10, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
  		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0010, { NULL } /* Abit NI8 SLI GR, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 10, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "NB 1.4V",		 4, 0, 10, 1, 0 },
  		{ "SB 1.5V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "SYS",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
  		{ "OTES1 Fan",		36, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0011, { "AT8 32X", NULL }, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 20, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VDDA 2.5V",	 6, 0, 20, 1, 0 },
  		{ "NB 1.8V",		 4, 0, 10, 1, 0 },
  		{ "NB 1.8V Dual",	 5, 0, 10, 1, 0 },
  		{ "HTV 1.2",		 3, 0, 10, 1, 0 },
  		{ "PCIE 1.2V",		12, 0, 10, 1, 0 },
  		{ "NB 1.2V",		13, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "NB",			25, 1, 1, 1, 0 },
  		{ "System",		26, 1, 1, 1, 0 },
  		{ "PWM",		27, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0012, { NULL } /* Abit AN8 32X, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 20, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "HyperTransport",	 3, 0, 10, 1, 0 },
  		{ "CPU VDDA 2.5V",	 5, 0, 20, 1, 0 },
  		{ "NB",			 4, 0, 10, 1, 0 },
  		{ "SB",			 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "SYS",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		36, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0013, { NULL } /* Abit AW8D, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 10, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
  		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM1",		26, 1, 1, 1, 0 },
  		{ "PWM2",		27, 1, 1, 1, 0 },
  		{ "PWM3",		28, 1, 1, 1, 0 },
  		{ "PWM4",		29, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
  		{ "AUX4 Fan",		38, 2, 60, 1, 0 },
  		{ "AUX5 Fan",		39, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0014, { "AB9", "AB9 Pro", NULL }, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 10, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
  		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0015, { NULL } /* Unknown, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR",		 1, 0, 20, 1, 0 },
  		{ "DDR VTT",		 2, 0, 10, 1, 0 },
  		{ "HyperTransport",	 3, 0, 10, 1, 0 },
  		{ "CPU VDDA 2.5V",	 5, 0, 20, 1, 0 },
  		{ "NB",			 4, 0, 10, 1, 0 },
  		{ "SB",			 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "SYS",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0016, { "AW9D-MAX", NULL }, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR2",		 1, 0, 20, 1, 0 },
  		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH & PCIE 1.5V",	 4, 0, 10, 1, 0 },
  		{ "MCH 2.5V",		 5, 0, 20, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM1",		26, 1, 1, 1, 0 },
  		{ "PWM2",		27, 1, 1, 1, 0 },
  		{ "PWM3",		28, 1, 1, 1, 0 },
  		{ "PWM4",		29, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "NB Fan",		33, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		36, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		37, 2, 60, 1, 0 },
  		{ "OTES1 Fan",		38, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0017, { NULL } /* Unknown, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR2",		 1, 0, 20, 1, 0 },
  		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
  		{ "HyperTransport",	 3, 0, 10, 1, 0 },
  		{ "CPU VDDA 2.5V",	 6, 0, 20, 1, 0 },
  		{ "NB 1.8V",		 4, 0, 10, 1, 0 },
  		{ "NB 1.2V ",		13, 0, 10, 1, 0 },
  		{ "SB 1.2V",		 5, 0, 10, 1, 0 },
  		{ "PCIE 1.2V",		12, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "ATX +3.3V",		10, 0, 20, 1, 0 },
  		{ "ATX 5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		26, 1, 1, 1, 0 },
  		{ "PWM",		27, 1, 1, 1, 0 },
  		{ "CPU FAN",		32, 2, 60, 1, 0 },
  		{ "SYS FAN",		34, 2, 60, 1, 0 },
  		{ "AUX1 FAN",		35, 2, 60, 1, 0 },
  		{ "AUX2 FAN",		36, 2, 60, 1, 0 },
  		{ "AUX3 FAN",		37, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0018, { "AB9 QuadGT", NULL }, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR2",		 1, 0, 20, 1, 0 },
  		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT",		 3, 0, 10, 1, 0 },
  		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
  		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM Phase1",		26, 1, 1, 1, 0 },
  		{ "PWM Phase2",		27, 1, 1, 1, 0 },
  		{ "PWM Phase3",		28, 1, 1, 1, 0 },
  		{ "PWM Phase4",		29, 1, 1, 1, 0 },
  		{ "PWM Phase5",		30, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0019, { "IN9 32X MAX", NULL }, {
  		{ "CPU Core",		 7, 0, 10, 1, 0 },
  		{ "DDR2",		13, 0, 20, 1, 0 },
  		{ "DDR2 VTT",		14, 0, 10, 1, 0 },
  		{ "CPU VTT",		 3, 0, 20, 1, 0 },
  		{ "NB 1.2V",		 4, 0, 10, 1, 0 },
  		{ "SB 1.5V",		 6, 0, 10, 1, 0 },
  		{ "HyperTransport",	 5, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	12, 0, 60, 1, 0 },
  		{ "ATX +12V (4-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "ATX +3.3V",		10, 0, 20, 1, 0 },
  		{ "ATX 5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM Phase1",		26, 1, 1, 1, 0 },
  		{ "PWM Phase2",		27, 1, 1, 1, 0 },
  		{ "PWM Phase3",		28, 1, 1, 1, 0 },
  		{ "PWM Phase4",		29, 1, 1, 1, 0 },
  		{ "PWM Phase5",		30, 1, 1, 1, 0 },
  		{ "CPU FAN",		32, 2, 60, 1, 0 },
  		{ "SYS FAN",		34, 2, 60, 1, 0 },
  		{ "AUX1 FAN",		33, 2, 60, 1, 0 },
  		{ "AUX2 FAN",		35, 2, 60, 1, 0 },
  		{ "AUX3 FAN",		36, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x001A, { "IP35 Pro", "IP35 Pro XE", NULL }, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR2",		 1, 0, 20, 1, 0 },
  		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT 1.2V",	 3, 0, 10, 1, 0 },
  		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
  		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (8-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM",		26, 1, 1, 1, 0 },
  		{ "PWM Phase2",		27, 1, 1, 1, 0 },
  		{ "PWM Phase3",		28, 1, 1, 1, 0 },
  		{ "PWM Phase4",		29, 1, 1, 1, 0 },
  		{ "PWM Phase5",		30, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
  		{ "AUX4 Fan",		37, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x001B, { NULL } /* Unknown, need DMI string */, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR3",		 1, 0, 20, 1, 0 },
  		{ "DDR3 VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT",		 3, 0, 10, 1, 0 },
  		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
  		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (8-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM Phase1",		26, 1, 1, 1, 0 },
  		{ "PWM Phase2",		27, 1, 1, 1, 0 },
  		{ "PWM Phase3",		28, 1, 1, 1, 0 },
  		{ "PWM Phase4",		29, 1, 1, 1, 0 },
  		{ "PWM Phase5",		30, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x001C, { "IX38 QuadGT", NULL }, {
  		{ "CPU Core",		 0, 0, 10, 1, 0 },
  		{ "DDR2",		 1, 0, 20, 1, 0 },
  		{ "DDR2 VTT",		 2, 0, 10, 1, 0 },
  		{ "CPU VTT",		 3, 0, 10, 1, 0 },
  		{ "MCH 1.25V",		 4, 0, 10, 1, 0 },
  		{ "ICHIO 1.5V",		 5, 0, 10, 1, 0 },
  		{ "ICH 1.05V",		 6, 0, 10, 1, 0 },
  		{ "ATX +12V (24-Pin)",	 7, 0, 60, 1, 0 },
  		{ "ATX +12V (8-pin)",	 8, 0, 60, 1, 0 },
  		{ "ATX +5V",		 9, 0, 30, 1, 0 },
  		{ "+3.3V",		10, 0, 20, 1, 0 },
  		{ "5VSB",		11, 0, 30, 1, 0 },
  		{ "CPU",		24, 1, 1, 1, 0 },
  		{ "System",		25, 1, 1, 1, 0 },
  		{ "PWM Phase1",		26, 1, 1, 1, 0 },
  		{ "PWM Phase2",		27, 1, 1, 1, 0 },
  		{ "PWM Phase3",		28, 1, 1, 1, 0 },
  		{ "PWM Phase4",		29, 1, 1, 1, 0 },
  		{ "PWM Phase5",		30, 1, 1, 1, 0 },
  		{ "CPU Fan",		32, 2, 60, 1, 0 },
  		{ "SYS Fan",		34, 2, 60, 1, 0 },
  		{ "AUX1 Fan",		33, 2, 60, 1, 0 },
  		{ "AUX2 Fan",		35, 2, 60, 1, 0 },
  		{ "AUX3 Fan",		36, 2, 60, 1, 0 },
  		{ NULL, 0, 0, 0, 0, 0 } }
  	},
  	{ 0x0000, { NULL }, { { NULL, 0, 0, 0, 0, 0 } } }
  };
  
  
  /* Insmod parameters */
  static bool force;
  module_param(force, bool, 0);
  MODULE_PARM_DESC(force, "Set to one to force detection.");
  /* Default verbose is 1, since this driver is still in the testing phase */
  static bool verbose = 1;
  module_param(verbose, bool, 0644);
  MODULE_PARM_DESC(verbose, "Enable/disable verbose error reporting");
  
  static const char *never_happen = "This should never happen.";
  static const char *report_this =
  	"Please report this to the abituguru3 maintainer (see MAINTAINERS)";
  
  /* wait while the uguru is busy (usually after a write) */
  static int abituguru3_wait_while_busy(struct abituguru3_data *data)
  {
  	u8 x;
  	int timeout = ABIT_UGURU3_WAIT_TIMEOUT;
  
  	while ((x = inb_p(data->addr + ABIT_UGURU3_DATA)) &
  			ABIT_UGURU3_STATUS_BUSY) {
  		timeout--;
  		if (timeout == 0)
  			return x;
  		/*
  		 * 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;
  }
  
  /* wait till uguru is ready to be read */
  static int abituguru3_wait_for_read(struct abituguru3_data *data)
  {
  	u8 x;
  	int timeout = ABIT_UGURU3_WAIT_TIMEOUT;
  
  	while (!((x = inb_p(data->addr + ABIT_UGURU3_DATA)) &
  			ABIT_UGURU3_STATUS_READY_FOR_READ)) {
  		timeout--;
  		if (timeout == 0)
  			return x;
  		/*
  		 * 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.
   */
  static int abituguru3_synchronize(struct abituguru3_data *data)
  {
  	int x, timeout = ABIT_UGURU3_SYNCHRONIZE_TIMEOUT;
  
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("synchronize timeout during initial busy "
  			"wait, status: 0x%02x
  ", x);
  		return -EIO;
  	}
  
  	outb(0x20, data->addr + ABIT_UGURU3_DATA);
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x20, "
  			"status: 0x%02x
  ", x);
  		return -EIO;
  	}
  
  	outb(0x10, data->addr + ABIT_UGURU3_CMD);
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x10, "
  			"status: 0x%02x
  ", x);
  		return -EIO;
  	}
  
  	outb(0x00, data->addr + ABIT_UGURU3_CMD);
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("synchronize timeout after sending 0x00, "
  			"status: 0x%02x
  ", x);
  		return -EIO;
  	}
  
  	x = abituguru3_wait_for_read(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("synchronize timeout waiting for read, "
  			"status: 0x%02x
  ", x);
  		return -EIO;
  	}
  
  	while ((x = inb(data->addr + ABIT_UGURU3_CMD)) != 0xAC) {
  		timeout--;
  		if (timeout == 0) {
  			ABIT_UGURU3_DEBUG("synchronize timeout cmd does not "
  				"hold 0xAC after synchronize, cmd: 0x%02x
  ",
  				x);
  			return -EIO;
  		}
  		msleep(1);
  	}
  	return 0;
  }
  
  /*
   * 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)
  {
  	int i, x;
  
  	x = abituguru3_synchronize(data);
  	if (x)
  		return x;
  
  	outb(0x1A, data->addr + ABIT_UGURU3_DATA);
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
  			"sending 0x1A, status: 0x%02x
  ", (unsigned int)bank,
  			(unsigned int)offset, x);
  		return -EIO;
  	}
  
  	outb(bank, data->addr + ABIT_UGURU3_CMD);
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
  			"sending the bank, status: 0x%02x
  ",
  			(unsigned int)bank, (unsigned int)offset, x);
  		return -EIO;
  	}
  
  	outb(offset, data->addr + ABIT_UGURU3_CMD);
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
  			"sending the offset, status: 0x%02x
  ",
  			(unsigned int)bank, (unsigned int)offset, x);
  		return -EIO;
  	}
  
  	outb(count, data->addr + ABIT_UGURU3_CMD);
  	x = abituguru3_wait_while_busy(data);
  	if (x != ABIT_UGURU3_SUCCESS) {
  		ABIT_UGURU3_DEBUG("read from 0x%02x:0x%02x timed out after "
  			"sending the count, status: 0x%02x
  ",
  			(unsigned int)bank, (unsigned int)offset, x);
  		return -EIO;
  	}
  
  	for (i = 0; i < count; i++) {
  		x = abituguru3_wait_for_read(data);
  		if (x != ABIT_UGURU3_SUCCESS) {
  			ABIT_UGURU3_DEBUG("timeout reading byte %d from "
  				"0x%02x:0x%02x, status: 0x%02x
  ", i,
  				(unsigned int)bank, (unsigned int)offset, x);
  			break;
  		}
  		buf[i] = inb(data->addr + ABIT_UGURU3_CMD);
  	}
  	return i;
  }
  
  /*
   * 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)
  {
  	int i, x;
  
  	for (i = 0; i < offset_count; i++) {
  		x = abituguru3_read(data, bank, offset + i, count,
  				    buf + i * count);
  		if (x != count) {
  			if (x < 0)
  				return x;
  			return i * count + x;
  		}
  	}
  
  	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.
   */
  static struct abituguru3_data *abituguru3_update_device(struct device *dev);
  
  static ssize_t show_value(struct device *dev,
  	struct device_attribute *devattr, char *buf)
  {
  	int value;
  	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
  	struct abituguru3_data *data = abituguru3_update_device(dev);
  	const struct abituguru3_sensor_info *sensor;
  
  	if (!data)
  		return -EIO;
  
  	sensor = &data->sensors[attr->index];
  
  	/* are we reading a setting, or is this a normal read? */
  	if (attr->nr)
  		value = data->settings[sensor->port][attr->nr];
  	else
  		value = data->value[sensor->port];
  
  	/* convert the value */
  	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
  	 */
  	if (sensor->type == ABIT_UGURU3_TEMP_SENSOR)
  		value *= 1000;
  
  	return sprintf(buf, "%d
  ", value);
  }
  
  static ssize_t show_alarm(struct device *dev,
  	struct device_attribute *devattr, char *buf)
  {
  	int port;
  	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
  	struct abituguru3_data *data = abituguru3_update_device(dev);
  
  	if (!data)
  		return -EIO;
  
  	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.
  	 */
  	if ((data->alarms[port / 8] & (0x01 << (port % 8))) &&
  			(!attr->nr || (data->settings[port][0] & attr->nr)))
  		return sprintf(buf, "1
  ");
  	else
  		return sprintf(buf, "0
  ");
  }
  
  static ssize_t show_mask(struct device *dev,
  	struct device_attribute *devattr, char *buf)
  {
  	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
  	struct abituguru3_data *data = dev_get_drvdata(dev);
  
  	if (data->settings[data->sensors[attr->index].port][0] & attr->nr)
  		return sprintf(buf, "1
  ");
  	else
  		return sprintf(buf, "0
  ");
  }
  
  static ssize_t show_label(struct device *dev,
  	struct device_attribute *devattr, char *buf)
  {
  	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
  	struct abituguru3_data *data = dev_get_drvdata(dev);
  
  	return sprintf(buf, "%s
  ", data->sensors[attr->index].name);
  }
  
  static ssize_t show_name(struct device *dev,
  	struct device_attribute *devattr, char *buf)
  {
  	return sprintf(buf, "%s
  ", ABIT_UGURU3_NAME);
  }
  
  /* Sysfs attr templates, the real entries are generated automatically. */
  static const
  struct sensor_device_attribute_2 abituguru3_sysfs_templ[3][10] = { {
  	SENSOR_ATTR_2(in%d_input, 0444, show_value, NULL, 0, 0),
  	SENSOR_ATTR_2(in%d_min, 0444, show_value, NULL, 1, 0),
  	SENSOR_ATTR_2(in%d_max, 0444, show_value, NULL, 2, 0),
  	SENSOR_ATTR_2(in%d_min_alarm, 0444, show_alarm, NULL,
  		ABIT_UGURU3_VOLT_LOW_ALARM_FLAG, 0),
  	SENSOR_ATTR_2(in%d_max_alarm, 0444, show_alarm, NULL,
  		ABIT_UGURU3_VOLT_HIGH_ALARM_FLAG, 0),
  	SENSOR_ATTR_2(in%d_beep, 0444, show_mask, NULL,
  		ABIT_UGURU3_BEEP_ENABLE, 0),
  	SENSOR_ATTR_2(in%d_shutdown, 0444, show_mask, NULL,
  		ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
  	SENSOR_ATTR_2(in%d_min_alarm_enable, 0444, show_mask, NULL,
  		ABIT_UGURU3_VOLT_LOW_ALARM_ENABLE, 0),
  	SENSOR_ATTR_2(in%d_max_alarm_enable, 0444, show_mask, NULL,
  		ABIT_UGURU3_VOLT_HIGH_ALARM_ENABLE, 0),
  	SENSOR_ATTR_2(in%d_label, 0444, show_label, NULL, 0, 0)
  	}, {
  	SENSOR_ATTR_2(temp%d_input, 0444, show_value, NULL, 0, 0),
  	SENSOR_ATTR_2(temp%d_max, 0444, show_value, NULL, 1, 0),
  	SENSOR_ATTR_2(temp%d_crit, 0444, show_value, NULL, 2, 0),
  	SENSOR_ATTR_2(temp%d_alarm, 0444, show_alarm, NULL, 0, 0),
  	SENSOR_ATTR_2(temp%d_beep, 0444, show_mask, NULL,
  		ABIT_UGURU3_BEEP_ENABLE, 0),
  	SENSOR_ATTR_2(temp%d_shutdown, 0444, show_mask, NULL,
  		ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
  	SENSOR_ATTR_2(temp%d_alarm_enable, 0444, show_mask, NULL,
  		ABIT_UGURU3_TEMP_HIGH_ALARM_ENABLE, 0),
  	SENSOR_ATTR_2(temp%d_label, 0444, show_label, NULL, 0, 0)
  	}, {
  	SENSOR_ATTR_2(fan%d_input, 0444, show_value, NULL, 0, 0),
  	SENSOR_ATTR_2(fan%d_min, 0444, show_value, NULL, 1, 0),
  	SENSOR_ATTR_2(fan%d_alarm, 0444, show_alarm, NULL, 0, 0),
  	SENSOR_ATTR_2(fan%d_beep, 0444, show_mask, NULL,
  		ABIT_UGURU3_BEEP_ENABLE, 0),
  	SENSOR_ATTR_2(fan%d_shutdown, 0444, show_mask, NULL,
  		ABIT_UGURU3_SHUTDOWN_ENABLE, 0),
  	SENSOR_ATTR_2(fan%d_alarm_enable, 0444, show_mask, NULL,
  		ABIT_UGURU3_FAN_LOW_ALARM_ENABLE, 0),
  	SENSOR_ATTR_2(fan%d_label, 0444, show_label, NULL, 0, 0)
  } };
  
  static struct sensor_device_attribute_2 abituguru3_sysfs_attr[] = {
  	SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0),
  };
  
  static int abituguru3_probe(struct platform_device *pdev)
  {
  	const int no_sysfs_attr[3] = { 10, 8, 7 };
  	int sensor_index[3] = { 0, 1, 1 };
  	struct abituguru3_data *data;
  	int i, j, type, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV;
  	char *sysfs_filename;
  	u8 buf[2];
  	u16 id;
  
  	data = devm_kzalloc(&pdev->dev, sizeof(struct abituguru3_data),
  			    GFP_KERNEL);
  	if (!data)
  		return -ENOMEM;
  
  	data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
  	mutex_init(&data->update_lock);
  	platform_set_drvdata(pdev, data);
  
  	/* Read the motherboard ID */
  	i = abituguru3_read(data, ABIT_UGURU3_MISC_BANK, ABIT_UGURU3_BOARD_ID,
  			    2, buf);
  	if (i != 2)
  		goto abituguru3_probe_error;
  
  	/* Completely read the uGuru to see if one really is there */
  	if (!abituguru3_update_device(&pdev->dev))
  		goto abituguru3_probe_error;
  
  	/* lookup the ID in our motherboard table */
  	id = ((u16)buf[0] << 8) | (u16)buf[1];
  	for (i = 0; abituguru3_motherboards[i].id; i++)
  		if (abituguru3_motherboards[i].id == id)
  			break;
  	if (!abituguru3_motherboards[i].id) {
  		pr_err("error unknown motherboard ID: %04X. %s
  ",
  		       (unsigned int)id, report_this);
  		goto abituguru3_probe_error;
  	}
  	data->sensors = abituguru3_motherboards[i].sensors;
  
  	pr_info("found Abit uGuru3, motherboard ID: %04X
  ", (unsigned int)id);
  
  	/* Fill the sysfs attr array */
  	sysfs_attr_i = 0;
  	sysfs_filename = data->sysfs_names;
  	sysfs_names_free = ABIT_UGURU3_SYSFS_NAMES_LENGTH;
  	for (i = 0; data->sensors[i].name; i++) {
  		/* Fail safe check, this should never happen! */
  		if (i >= ABIT_UGURU3_MAX_NO_SENSORS) {
  			pr_err("Fatal error motherboard has more sensors then ABIT_UGURU3_MAX_NO_SENSORS. %s %s
  ",
  			       never_happen, report_this);
  			res = -ENAMETOOLONG;
  			goto abituguru3_probe_error;
  		}
  		type = data->sensors[i].type;
  		for (j = 0; j < no_sysfs_attr[type]; j++) {
  			used = snprintf(sysfs_filename, sysfs_names_free,
  				abituguru3_sysfs_templ[type][j].dev_attr.attr.
  				name, sensor_index[type]) + 1;
  			data->sysfs_attr[sysfs_attr_i] =
  				abituguru3_sysfs_templ[type][j];
  			data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
  				sysfs_filename;
  			data->sysfs_attr[sysfs_attr_i].index = i;
  			sysfs_filename += used;
  			sysfs_names_free -= used;
  			sysfs_attr_i++;
  		}
  		sensor_index[type]++;
  	}
  	/* Fail safe check, this should never happen! */
  	if (sysfs_names_free < 0) {
  		pr_err("Fatal error ran out of space for sysfs attr names. %s %s
  ",
  		       never_happen, report_this);
  		res = -ENAMETOOLONG;
  		goto abituguru3_probe_error;
  	}
  
  	/* Register sysfs hooks */
  	for (i = 0; i < sysfs_attr_i; i++)
  		if (device_create_file(&pdev->dev,
  				&data->sysfs_attr[i].dev_attr))
  			goto abituguru3_probe_error;
  	for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
  		if (device_create_file(&pdev->dev,
  				&abituguru3_sysfs_attr[i].dev_attr))
  			goto abituguru3_probe_error;
  
  	data->hwmon_dev = hwmon_device_register(&pdev->dev);
  	if (IS_ERR(data->hwmon_dev)) {
  		res = PTR_ERR(data->hwmon_dev);
  		goto abituguru3_probe_error;
  	}
  
  	return 0; /* success */
  
  abituguru3_probe_error:
  	for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
  		device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
  	for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
  		device_remove_file(&pdev->dev,
  			&abituguru3_sysfs_attr[i].dev_attr);
  	return res;
  }
  
  static int abituguru3_remove(struct platform_device *pdev)
  {
  	int i;
  	struct abituguru3_data *data = platform_get_drvdata(pdev);
  
  	hwmon_device_unregister(data->hwmon_dev);
  	for (i = 0; data->sysfs_attr[i].dev_attr.attr.name; i++)
  		device_remove_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
  	for (i = 0; i < ARRAY_SIZE(abituguru3_sysfs_attr); i++)
  		device_remove_file(&pdev->dev,
  			&abituguru3_sysfs_attr[i].dev_attr);
  	return 0;
  }
  
  static struct abituguru3_data *abituguru3_update_device(struct device *dev)
  {
  	int i;
  	struct abituguru3_data *data = dev_get_drvdata(dev);
  
  	mutex_lock(&data->update_lock);
  	if (!data->valid || time_after(jiffies, data->last_updated + HZ)) {
  		/* Clear data->valid while updating */
  		data->valid = 0;
  		/* Read alarms */
  		if (abituguru3_read_increment_offset(data,
  				ABIT_UGURU3_SETTINGS_BANK,
  				ABIT_UGURU3_ALARMS_START,
  				1, data->alarms, 48/8) != (48/8))
  			goto LEAVE_UPDATE;
  		/* Read in and temp sensors (3 byte settings / sensor) */
  		for (i = 0; i < 32; i++) {
  			if (abituguru3_read(data, ABIT_UGURU3_SENSORS_BANK,
  					ABIT_UGURU3_VALUES_START + i,
  					1, &data->value[i]) != 1)
  				goto LEAVE_UPDATE;
  			if (abituguru3_read_increment_offset(data,
  					ABIT_UGURU3_SETTINGS_BANK,
  					ABIT_UGURU3_SETTINGS_START + i * 3,
  					1,
  					data->settings[i], 3) != 3)
  				goto LEAVE_UPDATE;
  		}
  		/* Read temp sensors (2 byte settings / sensor) */
  		for (i = 0; i < 16; i++) {
  			if (abituguru3_read(data, ABIT_UGURU3_SENSORS_BANK,
  					ABIT_UGURU3_VALUES_START + 32 + i,
  					1, &data->value[32 + i]) != 1)
  				goto LEAVE_UPDATE;
  			if (abituguru3_read_increment_offset(data,
  					ABIT_UGURU3_SETTINGS_BANK,
  					ABIT_UGURU3_SETTINGS_START + 32 * 3 +
  						i * 2, 1,
  					data->settings[32 + i], 2) != 2)
  				goto LEAVE_UPDATE;
  		}
  		data->last_updated = jiffies;
  		data->valid = 1;
  	}
  LEAVE_UPDATE:
  	mutex_unlock(&data->update_lock);
  	if (data->valid)
  		return data;
  	else
  		return NULL;
  }
  
  #ifdef CONFIG_PM_SLEEP
  static int abituguru3_suspend(struct device *dev)
  {
  	struct abituguru3_data *data = dev_get_drvdata(dev);
  	/*
  	 * make sure all communications with the uguru3 are done and no new
  	 * ones are started
  	 */
  	mutex_lock(&data->update_lock);
  	return 0;
  }
  
  static int abituguru3_resume(struct device *dev)
  {
  	struct abituguru3_data *data = dev_get_drvdata(dev);
  	mutex_unlock(&data->update_lock);
  	return 0;
  }
  
  static SIMPLE_DEV_PM_OPS(abituguru3_pm, abituguru3_suspend, abituguru3_resume);
  #define ABIT_UGURU3_PM	(&abituguru3_pm)
  #else
  #define ABIT_UGURU3_PM	NULL
  #endif /* CONFIG_PM */
  
  static struct platform_driver abituguru3_driver = {
  	.driver = {
  		.owner	= THIS_MODULE,
  		.name	= ABIT_UGURU3_NAME,
  		.pm	= ABIT_UGURU3_PM
  	},
  	.probe	= abituguru3_probe,
  	.remove	= abituguru3_remove,
  };
  
  static int __init abituguru3_dmi_detect(void)
  {
  	const char *board_vendor, *board_name;
  	int i, err = (force) ? 1 : -ENODEV;
  	const char *const *dmi_name;
  	size_t sublen;
  
  	board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
  	if (!board_vendor || strcmp(board_vendor, "http://www.abit.com.tw/"))
  		return err;
  
  	board_name = dmi_get_system_info(DMI_BOARD_NAME);
  	if (!board_name)
  		return err;
  
  	/*
  	 * 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.
  	 */
  	sublen = strcspn(board_name, "(");
  	while (sublen > 0 && board_name[sublen - 1] == ' ')
  		sublen--;
  
  	for (i = 0; abituguru3_motherboards[i].id; i++) {
  		dmi_name = abituguru3_motherboards[i].dmi_name;
  		for ( ; *dmi_name; dmi_name++) {
  			if (strlen(*dmi_name) != sublen)
  				continue;
  			if (!strncasecmp(board_name, *dmi_name, sublen))
  				return 0;
  		}
  	}
  
  	/* No match found */
  	return 1;
  }
  
  /*
   * 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.
  	 */
  	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)) &&
  			((cmd_val == 0xAC) || (cmd_val == 0x05) ||
  			 (cmd_val == 0x55)))
  		return 0;
  
  	ABIT_UGURU3_DEBUG("no Abit uGuru3 found, data = 0x%02X, cmd = "
  		"0x%02X
  ", (unsigned int)data_val, (unsigned int)cmd_val);
  
  	if (force) {
  		pr_info("Assuming Abit uGuru3 is present because of \"force\" parameter
  ");
  		return 0;
  	}
  
  	/* No uGuru3 found */
  	return -ENODEV;
  }
  
  static struct platform_device *abituguru3_pdev;
  
  static int __init abituguru3_init(void)
  {
  	struct resource res = { .flags = IORESOURCE_IO };
  	int err;
  
  	/* Attempt DMI detection first */
  	err = abituguru3_dmi_detect();
  	if (err < 0)
  		return err;
  
  	/*
  	 * Fall back to manual detection if there was no exact
  	 * board name match, or force was specified.
  	 */
  	if (err > 0) {
  		err = abituguru3_detect();
  		if (err)
  			return err;
  
  		pr_warn("this motherboard was not detected using DMI. "
  			"Please send the output of \"dmidecode\" to the abituguru3 maintainer (see MAINTAINERS)
  ");
  	}
  
  	err = platform_driver_register(&abituguru3_driver);
  	if (err)
  		goto exit;
  
  	abituguru3_pdev = platform_device_alloc(ABIT_UGURU3_NAME,
  						ABIT_UGURU3_BASE);
  	if (!abituguru3_pdev) {
  		pr_err("Device allocation failed
  ");
  		err = -ENOMEM;
  		goto exit_driver_unregister;
  	}
  
  	res.start = ABIT_UGURU3_BASE;
  	res.end = ABIT_UGURU3_BASE + ABIT_UGURU3_REGION_LENGTH - 1;
  	res.name = ABIT_UGURU3_NAME;
  
  	err = platform_device_add_resources(abituguru3_pdev, &res, 1);
  	if (err) {
  		pr_err("Device resource addition failed (%d)
  ", err);
  		goto exit_device_put;
  	}
  
  	err = platform_device_add(abituguru3_pdev);
  	if (err) {
  		pr_err("Device addition failed (%d)
  ", err);
  		goto exit_device_put;
  	}
  
  	return 0;
  
  exit_device_put:
  	platform_device_put(abituguru3_pdev);
  exit_driver_unregister:
  	platform_driver_unregister(&abituguru3_driver);
  exit:
  	return err;
  }
  
  static void __exit abituguru3_exit(void)
  {
  	platform_device_unregister(abituguru3_pdev);
  	platform_driver_unregister(&abituguru3_driver);
  }
  
  MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
  MODULE_DESCRIPTION("Abit uGuru3 Sensor device");
  MODULE_LICENSE("GPL");
  
  module_init(abituguru3_init);
  module_exit(abituguru3_exit);