[PATCH] new hwmon driver adt7462 - Kernel

This is a discussion on [PATCH] new hwmon driver adt7462 - Kernel ; New driver to feed on. As Jean mentioned a couple of years ago, this chip is a beast with odd combinations of 8 fans, 4 temperatures, and 13 voltage sensors. This driver has been tested on an IntelliStation Z30. Signed-off-by: ...

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Thread: [PATCH] new hwmon driver adt7462

  1. [PATCH] new hwmon driver adt7462

    New driver to feed on. As Jean mentioned a couple of years ago, this
    chip is a beast with odd combinations of 8 fans, 4 temperatures, and
    13 voltage sensors. This driver has been tested on an IntelliStation
    Z30.

    Signed-off-by: Darrick J. Wong
    ---

    Documentation/hwmon/adt7462 | 67 +
    drivers/hwmon/Kconfig | 10
    drivers/hwmon/Makefile | 1
    drivers/hwmon/adt7462.c | 1991 +++++++++++++++++++++++++++++++++++++++++++
    4 files changed, 2069 insertions(+), 0 deletions(-)

    diff --git a/Documentation/hwmon/adt7462 b/Documentation/hwmon/adt7462
    new file mode 100644
    index 0000000..488e5ca
    --- /dev/null
    +++ b/Documentation/hwmon/adt7462
    @@ -0,0 +1,67 @@
    +Kernel driver adt7462
    +======================
    +
    +Supported chips:
    + * Analog Devices ADT7462
    + Prefix: 'adt7462'
    + Addresses scanned: I2C 0x58, 0x5C
    + Datasheet: Publicly available at the Analog Devices website
    +
    +Author: Darrick J. Wong
    +
    +Description
    +-----------
    +
    +This driver implements support for the Analog Devices ADT7462 chip family.
    +
    +This chip is a bit of a beast. It has 8 counters for measuring fan speed. It
    +can also measure 13 voltages or 4 temperatures, or various combinations of the
    +two. See the chip documentation for more details about the exact set of
    +configurations. This driver does not allow one to configure the chip; that is
    +left to the system designer.
    +
    +A sophisticated control system for the PWM outputs is designed into the ADT7462
    +that allows fan speed to be adjusted automatically based on any of the three
    +temperature sensors. Each PWM output is individually adjustable and
    +programmable. Once configured, the ADT7462 will adjust the PWM outputs in
    +response to the measured temperatures without further host intervention. This
    +feature can also be disabled for manual control of the PWM's.
    +
    +Each of the measured inputs (voltage, temperature, fan speed) has
    +corresponding high/low limit values. The ADT7462 will signal an ALARM if
    +any measured value exceeds either limit.
    +
    +The ADT7462 samples all inputs continuously. The driver will not read
    +the registers more often than once every other second. Further,
    +configuration data is only read once per minute.
    +
    +Special Features
    +----------------
    +
    +The ADT7462 have a 10-bit ADC and can therefore measure temperatures
    +with 0.25 degC resolution.
    +
    +The Analog Devices datasheet is very detailed and describes a procedure for
    +determining an optimal configuration for the automatic PWM control.
    +
    +The driver will report sensor labels when it is able to determine that
    +information from the configuration registers.
    +
    +Configuration Notes
    +-------------------
    +
    +Besides standard interfaces driver adds the following:
    +
    +* PWM Control
    +
    +* pwm#_auto_point1_pwm and pwm#_auto_point1_temp and
    +* pwm#_auto_point2_pwm and pwm#_auto_point2_temp -
    +
    +point1: Set the pwm speed at a lower temperature bound.
    +point2: Set the pwm speed at a higher temperature bound.
    +
    +The ADT7462 will scale the pwm between the lower and higher pwm speed when
    +the temperature is between the two temperature boundaries. PWM values range
    +from 0 (off) to 255 (full speed). Fan speed will be set to maximum when the
    +temperature sensor associated with the PWM control exceeds temp#_max.
    +
    diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
    index 6d91cee..a36e2bb 100644
    --- a/drivers/hwmon/Kconfig
    +++ b/drivers/hwmon/Kconfig
    @@ -159,6 +159,16 @@ config SENSORS_ADM9240
    This driver can also be built as a module. If so, the module
    will be called adm9240.

    +config SENSORS_ADT7462
    + tristate "Analog Devices ADT7462"
    + depends on I2C && EXPERIMENTAL
    + help
    + If you say yes here you get support for the Analog Devices
    + ADT7462 temperature monitoring chips.
    +
    + This driver can also be built as a module. If so, the module
    + will be called adt7462.
    +
    config SENSORS_ADT7470
    tristate "Analog Devices ADT7470"
    depends on I2C && EXPERIMENTAL
    diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
    index 950134a..836b277 100644
    --- a/drivers/hwmon/Makefile
    +++ b/drivers/hwmon/Makefile
    @@ -25,6 +25,7 @@ obj-$(CONFIG_SENSORS_ADM1029) += adm1029.o
    obj-$(CONFIG_SENSORS_ADM1031) += adm1031.o
    obj-$(CONFIG_SENSORS_ADM9240) += adm9240.o
    obj-$(CONFIG_SENSORS_ADS7828) += ads7828.o
    +obj-$(CONFIG_SENSORS_ADT7462) += adt7462.o
    obj-$(CONFIG_SENSORS_ADT7470) += adt7470.o
    obj-$(CONFIG_SENSORS_ADT7473) += adt7473.o
    obj-$(CONFIG_SENSORS_APPLESMC) += applesmc.o
    diff --git a/drivers/hwmon/adt7462.c b/drivers/hwmon/adt7462.c
    new file mode 100644
    index 0000000..c17fe30
    --- /dev/null
    +++ b/drivers/hwmon/adt7462.c
    @@ -0,0 +1,1991 @@
    +/*
    + * A hwmon driver for the Analog Devices ADT7462
    + * Copyright (C) 2008 IBM
    + *
    + * Author: Darrick J. Wong
    + *
    + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    + */
    +
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +#include
    +
    +/* Addresses to scan */
    +static const unsigned short normal_i2c[] = { 0x58, 0x5C, I2C_CLIENT_END };
    +
    +/* Insmod parameters */
    +I2C_CLIENT_INSMOD_1(adt7462);
    +
    +/* ADT7462 registers */
    +#define ADT7462_REG_DEVICE 0x3D
    +#define ADT7462_REG_VENDOR 0x3E
    +#define ADT7462_REG_REVISION 0x3F
    +
    +#define ADT7462_REG_MIN_TEMP_BASE_ADDR 0x44
    +#define ADT7462_REG_MIN_TEMP_MAX_ADDR 0x47
    +#define ADT7462_REG_MAX_TEMP_BASE_ADDR 0x48
    +#define ADT7462_REG_MAX_TEMP_MAX_ADDR 0x4B
    +#define ADT7462_REG_TEMP_BASE_ADDR 0x88
    +#define ADT7462_REG_TEMP_MAX_ADDR 0x8F
    +
    +#define ADT7462_REG_FAN_BASE_ADDR 0x98
    +#define ADT7462_REG_FAN_MAX_ADDR 0x9F
    +#define ADT7462_REG_FAN2_BASE_ADDR 0xA2
    +#define ADT7462_REG_FAN2_MAX_ADDR 0xA9
    +#define ADT7462_REG_FAN_ENABLE 0x07
    +#define ADT7462_REG_FAN_MIN_BASE_ADDR 0x78
    +#define ADT7462_REG_FAN_MIN_MAX_ADDR 0x7F
    +
    +#define ADT7462_REG_CFG2 0x02
    +#define ADT7462_FSPD_MASK 0x20
    +
    +#define ADT7462_REG_PWM_BASE_ADDR 0xAA
    +#define ADT7462_REG_PWM_MAX_ADDR 0xAD
    +#define ADT7462_REG_PWM_MIN_BASE_ADDR 0x28
    +#define ADT7462_REG_PWM_MIN_MAX_ADDR 0x2B
    +#define ADT7462_REG_PWM_MAX 0x2C
    +#define ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR 0x5C
    +#define ADT7462_REG_PWM_TEMP_MIN_MAX_ADDR 0x5F
    +#define ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR 0x60
    +#define ADT7462_REG_PWM_TEMP_RANGE_MAX_ADDR 0x63
    +#define ADT7462_PWM_HYST_MASK 0x0F
    +#define ADT7462_PWM_RANGE_MASK 0xF0
    +#define ADT7462_PWM_RANGE_SHIFT 4
    +#define ADT7462_REG_PWM_CFG_BASE_ADDR 0x21
    +#define ADT7462_REG_PWM_CFG_MAX_ADDR 0x24
    +#define ADT7462_PWM_CHANNEL_MASK 0xE0
    +#define ADT7462_PWM_CHANNEL_SHIFT 5
    +
    +#define ADT7462_REG_PIN_CFG_BASE_ADDR 0x10
    +#define ADT7462_REG_PIN_CFG_MAX_ADDR 0x13
    +#define ADT7462_PIN7_INPUT 0x01 /* cfg0 */
    +#define ADT7462_DIODE3_INPUT 0x20
    +#define ADT7462_DIODE1_INPUT 0x40
    +#define ADT7462_VID_INPUT 0x80
    +#define ADT7462_PIN22_INPUT 0x04 /* cfg1 */
    +#define ADT7462_PIN21_INPUT 0x08
    +#define ADT7462_PIN19_INPUT 0x10
    +#define ADT7462_PIN15_INPUT 0x20
    +#define ADT7462_PIN13_INPUT 0x40
    +#define ADT7462_PIN8_INPUT 0x80
    +#define ADT7462_PIN23_MASK 0x03
    +#define ADT7462_PIN23_SHIFT 0
    +#define ADT7462_PIN26_MASK 0x0C /* cfg2 */
    +#define ADT7462_PIN26_SHIFT 2
    +#define ADT7462_PIN25_MASK 0x30
    +#define ADT7462_PIN25_SHIFT 4
    +#define ADT7462_PIN24_MASK 0xC0
    +#define ADT7462_PIN24_SHIFT 6
    +#define ADT7462_PIN26_VOLT_INPUT 0x08
    +#define ADT7462_PIN25_VOLT_INPUT 0x20
    +#define ADT7462_PIN28_SHIFT 6 /* cfg3 */
    +#define ADT7462_PIN28_VOLT 0x5
    +
    +#define ADT7462_REG_ALARM1 0xB8
    +#define ADT7462_LT_ALARM 0x02
    +#define ADT7462_R1T_ALARM 0x04
    +#define ADT7462_R2T_ALARM 0x08
    +#define ADT7462_R3T_ALARM 0x10
    +#define ADT7462_REG_ALARM2 0xBB
    +#define ADT7462_V0_ALARM 0x01
    +#define ADT7462_V1_ALARM 0x02
    +#define ADT7462_V2_ALARM 0x04
    +#define ADT7462_V3_ALARM 0x08
    +#define ADT7462_V4_ALARM 0x10
    +#define ADT7462_V5_ALARM 0x20
    +#define ADT7462_V6_ALARM 0x40
    +#define ADT7462_V7_ALARM 0x80
    +#define ADT7462_REG_ALARM3 0xBC
    +#define ADT7462_V8_ALARM 0x08
    +#define ADT7462_V9_ALARM 0x10
    +#define ADT7462_V10_ALARM 0x20
    +#define ADT7462_V11_ALARM 0x40
    +#define ADT7462_V12_ALARM 0x80
    +#define ADT7462_REG_ALARM4 0xBD
    +#define ADT7462_F0_ALARM 0x01
    +#define ADT7462_F1_ALARM 0x02
    +#define ADT7462_F2_ALARM 0x04
    +#define ADT7462_F3_ALARM 0x08
    +#define ADT7462_F4_ALARM 0x10
    +#define ADT7462_F5_ALARM 0x20
    +#define ADT7462_F6_ALARM 0x40
    +#define ADT7462_F7_ALARM 0x80
    +#define ADT7462_ALARM1 0x0000
    +#define ADT7462_ALARM2 0x0100
    +#define ADT7462_ALARM3 0x0200
    +#define ADT7462_ALARM4 0x0300
    +#define ADT7462_ALARM_REG_SHIFT 8
    +#define ADT7462_ALARM_FLAG_MASK 0x0F
    +
    +#define ADT7462_TEMP_COUNT 4
    +#define ADT7462_TEMP_REG(x) (ADT7462_REG_TEMP_BASE_ADDR + (x * 2))
    +#define ADT7462_TEMP_MIN_REG(x) (ADT7462_REG_MIN_TEMP_BASE_ADDR + (x))
    +#define ADT7462_TEMP_MAX_REG(x) (ADT7462_REG_MAX_TEMP_BASE_ADDR + (x))
    +#define TEMP_FRAC_OFFSET 6
    +
    +#define ADT7462_FAN_COUNT 8
    +#define ADT7462_REG_FAN_MIN(x) (ADT7462_REG_FAN_MIN_BASE_ADDR + (x))
    +
    +#define ADT7462_PWM_COUNT 4
    +#define ADT7462_REG_PWM(x) (ADT7462_REG_PWM_BASE_ADDR + (x))
    +#define ADT7462_REG_PWM_MIN(x) (ADT7462_REG_PWM_MIN_BASE_ADDR + (x))
    +#define ADT7462_REG_PWM_TMIN(x) \
    + (ADT7462_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
    +#define ADT7462_REG_PWM_TRANGE(x) \
    + (ADT7462_REG_PWM_TEMP_RANGE_BASE_ADDR + (x))
    +
    +#define ADT7462_PIN_CFG_REG_COUNT 4
    +#define ADT7462_REG_PIN_CFG(x) (ADT7462_REG_PIN_CFG_BASE_ADDR + (x))
    +#define ADT7462_REG_PWM_CFG(x) (ADT7462_REG_PWM_CFG_BASE_ADDR + (x))
    +
    +#define ADT7462_ALARM_REG_COUNT 4
    +
    +/*
    + * The chip can measure 13 different voltage sources:
    + *
    + * 1. +12V1 (pin 7)
    + * 2. Vccp1/+2.5V/+1.8V/+1.5V (pin 23)
    + * 3. +12V3 (pin 22)
    + * 4. +5V (pin 21)
    + * 5. +1.25V/+0.9V (pin 19)
    + * 6. +2.5V/+1.8V (pin 15)
    + * 7. +3.3v (pin 13)
    + * 8. +12V2 (pin 8)
    + * 9. Vbatt/FSB_Vtt (pin 26)
    + * A. +3.3V/+1.2V1 (pin 25)
    + * B. Vccp2/+2.5V/+1.8V/+1.5V (pin 24)
    + * C. +1.5V ICH (only if BOTH pin 28/29 are set to +1.5V)
    + * D. +1.5V 3GPIO (only if BOTH pin 28/29 are set to +1.5V)
    + *
    + * Each of these 13 has a factor to convert raw to voltage. Even better,
    + * the pins can be connected to other sensors (tach/gpio/hot/etc), which
    + * makes the bookkeeping tricky.
    + *
    + * Some, but not all, of these voltages have low/high limits.
    + */
    +#define ADT7462_VOLT_COUNT 12
    +
    +#define ADT7462_VENDOR 0x41
    +#define ADT7462_DEVICE 0x62
    +/* datasheet only mentions a revision 4 */
    +#define ADT7462_REVISION 0x04
    +
    +/* How often do we reread sensors values? (In jiffies) */
    +#define SENSOR_REFRESH_INTERVAL (2 * HZ)
    +
    +/* How often do we reread sensor limit values? (In jiffies) */
    +#define LIMIT_REFRESH_INTERVAL (60 * HZ)
    +
    +/* datasheet says to divide this number by the fan reading to get fan rpm */
    +#define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
    +#define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
    +#define FAN_PERIOD_INVALID 65535
    +#define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
    +
    +#define MASK_AND_SHIFT(value, prefix) \
    + (((value) & prefix##_MASK) >> prefix##_SHIFT)
    +
    +struct adt7462_data {
    + struct device *hwmon_dev;
    + struct attribute_group attrs;
    + struct mutex lock;
    + char sensors_valid;
    + char limits_valid;
    + unsigned long sensors_last_updated; /* In jiffies */
    + unsigned long limits_last_updated; /* In jiffies */
    +
    + u8 temp[ADT7462_TEMP_COUNT];
    + /* bits 6-7 are quarter pieces of temp */
    + u8 temp_frac[ADT7462_TEMP_COUNT];
    + u8 temp_min[ADT7462_TEMP_COUNT];
    + u8 temp_max[ADT7462_TEMP_COUNT];
    + u16 fan[ADT7462_FAN_COUNT];
    + u8 fan_enabled;
    + u8 fan_min[ADT7462_FAN_COUNT];
    + u8 cfg2;
    + u8 pwm[ADT7462_PWM_COUNT];
    + u8 pin_cfg[ADT7462_PIN_CFG_REG_COUNT];
    + u8 voltages[ADT7462_VOLT_COUNT];
    + u8 volt_max[ADT7462_VOLT_COUNT];
    + u8 volt_min[ADT7462_VOLT_COUNT];
    + u8 pwm_min[ADT7462_PWM_COUNT];
    + u8 pwm_tmin[ADT7462_PWM_COUNT];
    + u8 pwm_trange[ADT7462_PWM_COUNT];
    + u8 pwm_max; /* only one per chip */
    + u8 pwm_cfg[ADT7462_PWM_COUNT];
    + u8 alarms[ADT7462_ALARM_REG_COUNT];
    +};
    +
    +static int adt7462_probe(struct i2c_client *client,
    + const struct i2c_device_id *id);
    +static int adt7462_detect(struct i2c_client *client, int kind,
    + struct i2c_board_info *info);
    +static int adt7462_remove(struct i2c_client *client);
    +
    +static const struct i2c_device_id adt7462_id[] = {
    + { "adt7462", adt7462 },
    + { }
    +};
    +MODULE_DEVICE_TABLE(i2c, adt7462_id);
    +
    +static struct i2c_driver adt7462_driver = {
    + .class = I2C_CLASS_HWMON,
    + .driver = {
    + .name = "adt7462",
    + },
    + .probe = adt7462_probe,
    + .remove = adt7462_remove,
    + .id_table = adt7462_id,
    + .detect = adt7462_detect,
    + .address_data = &addr_data,
    +};
    +
    +/*
    + * 16-bit registers on the ADT7462 are low-byte first. The data sheet says
    + * that the low byte must be read before the high byte.
    + */
    +static inline int adt7462_read_word_data(struct i2c_client *client, u8 reg)
    +{
    + u16 foo;
    + foo = i2c_smbus_read_byte_data(client, reg);
    + foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
    + return foo;
    +}
    +
    +static inline int range_check(long val, long min, long max)
    +{
    + return val >= min && val <= max;
    +}
    +
    +/* For some reason these registers are not contiguous. */
    +static int ADT7462_REG_FAN(int fan)
    +{
    + if (fan < 4)
    + return ADT7462_REG_FAN_BASE_ADDR + (2 * fan);
    + return ADT7462_REG_FAN2_BASE_ADDR + (2 * (fan - 4));
    +}
    +
    +/* Voltage registers are scattered everywhere */
    +static int ADT7462_REG_VOLT_MAX(struct adt7462_data *data, int which)
    +{
    + switch (which) {
    + case 0:
    + if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
    + return 0x7C;
    + break;
    + case 1:
    + return 0x69;
    + case 2:
    + if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
    + return 0x7F;
    + break;
    + case 3:
    + if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
    + return 0x7E;
    + break;
    + case 4:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
    + return 0x4B;
    + break;
    + case 5:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
    + return 0x49;
    + break;
    + case 6:
    + if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
    + return 0x68;
    + break;
    + case 7:
    + if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
    + return 0x7D;
    + break;
    + case 8:
    + if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
    + return 0x6C;
    + break;
    + case 9:
    + if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
    + return 0x6B;
    + break;
    + case 10:
    + return 0x6A;
    + case 11:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return 0x50;
    + break;
    + case 12:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return 0x4C;
    + break;
    + }
    + return -ENODEV;
    +}
    +
    +static int ADT7462_REG_VOLT_MIN(struct adt7462_data *data, int which)
    +{
    + switch (which) {
    + case 0:
    + if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
    + return 0x6D;
    + break;
    + case 1:
    + return 0x72;
    + case 2:
    + if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
    + return 0x6F;
    + break;
    + case 3:
    + if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
    + return 0x71;
    + break;
    + case 4:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
    + return 0x47;
    + break;
    + case 5:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
    + return 0x45;
    + break;
    + case 6:
    + if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
    + return 0x70;
    + break;
    + case 7:
    + if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
    + return 0x6E;
    + break;
    + case 8:
    + if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
    + return 0x75;
    + break;
    + case 9:
    + if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
    + return 0x74;
    + break;
    + case 10:
    + return 0x73;
    + case 11:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return 0x76;
    + break;
    + case 12:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return 0x77;
    + break;
    + }
    + return -ENODEV;
    +}
    +
    +static int ADT7462_REG_VOLT(struct adt7462_data *data, int which)
    +{
    + switch (which) {
    + case 0:
    + if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
    + return 0xA3;
    + break;
    + case 1:
    + return 0x90;
    + case 2:
    + if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
    + return 0xA9;
    + break;
    + case 3:
    + if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
    + return 0xA7;
    + break;
    + case 4:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT))
    + return 0x8F;
    + break;
    + case 5:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT))
    + return 0x8B;
    + break;
    + case 6:
    + if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
    + return 0x96;
    + break;
    + case 7:
    + if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
    + return 0xA5;
    + break;
    + case 8:
    + if (!(data->pin_cfg[2] & ADT7462_PIN26_VOLT_INPUT))
    + return 0x93;
    + break;
    + case 9:
    + if (!(data->pin_cfg[2] & ADT7462_PIN25_VOLT_INPUT))
    + return 0x92;
    + break;
    + case 10:
    + return 0x91;
    + case 11:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return 0x94;
    + break;
    + case 12:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return 0x95;
    + break;
    + }
    + return -ENODEV;
    +}
    +
    +/* Provide labels for sysfs */
    +static const char *voltage_label(struct adt7462_data *data, int which)
    +{
    + switch (which) {
    + case 0:
    + if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
    + return "+12V1";
    + break;
    + case 1:
    + switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) {
    + case 0:
    + return "Vccp1";
    + case 1:
    + return "+2.5V";
    + case 2:
    + return "+1.8V";
    + case 3:
    + return "+1.5V";
    + }
    + case 2:
    + if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
    + return "+12V3";
    + break;
    + case 3:
    + if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
    + return "+5V";
    + break;
    + case 4:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) {
    + if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
    + return "+0.9V";
    + return "+1.25V";
    + }
    + break;
    + case 5:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) {
    + if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
    + return "+1.8V";
    + return "+2.5V";
    + }
    + break;
    + case 6:
    + if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
    + return "+3.3V";
    + break;
    + case 7:
    + if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
    + return "+12V2";
    + break;
    + case 8:
    + switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) {
    + case 0:
    + return "Vbatt";
    + case 1:
    + return "FSB_Vtt";
    + }
    + break;
    + case 9:
    + switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) {
    + case 0:
    + return "+3.3V";
    + case 1:
    + return "+1.2V1";
    + }
    + break;
    + case 10:
    + switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) {
    + case 0:
    + return "Vccp2";
    + case 1:
    + return "+2.5V";
    + case 2:
    + return "+1.8V";
    + case 3:
    + return "+1.5";
    + }
    + case 11:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return "+1.5V ICH";
    + break;
    + case 12:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return "+1.5V 3GPIO";
    + break;
    + }
    + return "N/A";
    +}
    +
    +/* Multipliers are actually in uV, not mV. */
    +static int voltage_multiplier(struct adt7462_data *data, int which)
    +{
    + switch (which) {
    + case 0:
    + if (!(data->pin_cfg[0] & ADT7462_PIN7_INPUT))
    + return 62500;
    + break;
    + case 1:
    + switch (MASK_AND_SHIFT(data->pin_cfg[1], ADT7462_PIN23)) {
    + case 0:
    + if (data->pin_cfg[0] & ADT7462_VID_INPUT)
    + return 12500;
    + return 6250;
    + case 1:
    + return 13000;
    + case 2:
    + return 9400;
    + case 3:
    + return 7800;
    + }
    + case 2:
    + if (!(data->pin_cfg[1] & ADT7462_PIN22_INPUT))
    + return 62500;
    + break;
    + case 3:
    + if (!(data->pin_cfg[1] & ADT7462_PIN21_INPUT))
    + return 26000;
    + break;
    + case 4:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE3_INPUT)) {
    + if (data->pin_cfg[1] & ADT7462_PIN19_INPUT)
    + return 4690;
    + return 6500;
    + }
    + break;
    + case 5:
    + if (!(data->pin_cfg[0] & ADT7462_DIODE1_INPUT)) {
    + if (data->pin_cfg[1] & ADT7462_PIN15_INPUT)
    + return 9400;
    + return 13000;
    + }
    + break;
    + case 6:
    + if (!(data->pin_cfg[1] & ADT7462_PIN13_INPUT))
    + return 17200;
    + break;
    + case 7:
    + if (!(data->pin_cfg[1] & ADT7462_PIN8_INPUT))
    + return 62500;
    + break;
    + case 8:
    + switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN26)) {
    + case 0:
    + return 15600;
    + case 1:
    + return 6250;
    + }
    + break;
    + case 9:
    + switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN25)) {
    + case 0:
    + return 17200;
    + case 1:
    + return 6250;
    + }
    + break;
    + case 10:
    + switch (MASK_AND_SHIFT(data->pin_cfg[2], ADT7462_PIN24)) {
    + case 0:
    + return 6250;
    + case 1:
    + return 13000;
    + case 2:
    + return 9400;
    + case 3:
    + return 7800;
    + }
    + case 11:
    + case 12:
    + if (data->pin_cfg[3] >> ADT7462_PIN28_SHIFT ==
    + ADT7462_PIN28_VOLT &&
    + !(data->pin_cfg[0] & ADT7462_VID_INPUT))
    + return 7800;
    + }
    + return 0;
    +}
    +
    +static int temp_enabled(struct adt7462_data *data, int which)
    +{
    + switch (which) {
    + case 0:
    + case 2:
    + return 1;
    + case 1:
    + if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT)
    + return 1;
    + break;
    + case 3:
    + if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT)
    + return 1;
    + break;
    + }
    + return 0;
    +}
    +
    +static const char *temp_label(struct adt7462_data *data, int which)
    +{
    + switch (which) {
    + case 0:
    + return "local";
    + case 1:
    + if (data->pin_cfg[0] & ADT7462_DIODE1_INPUT)
    + return "remote1";
    + break;
    + case 2:
    + return "remote2";
    + case 3:
    + if (data->pin_cfg[0] & ADT7462_DIODE3_INPUT)
    + return "remote3";
    + break;
    + }
    + return "N/A";
    +}
    +
    +/* Map Trange register values to mC */
    +#define NUM_TRANGE_VALUES 16
    +static int trange_values[NUM_TRANGE_VALUES] = {
    + 2000,
    + 2500,
    + 3300,
    + 4000,
    + 5000,
    + 6700,
    + 8000,
    + 10000,
    + 13300,
    + 16000,
    + 20000,
    + 26700,
    + 32000,
    + 40000,
    + 53300,
    + 80000
    +};
    +
    +static int find_trange_value(int trange)
    +{
    + int i;
    +
    + for (i = 0; i < NUM_TRANGE_VALUES; i++)
    + if (trange_values[i] == trange)
    + return i;
    +
    + return -ENODEV;
    +}
    +
    +static struct adt7462_data *adt7462_update_device(struct device *dev)
    +{
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + unsigned long local_jiffies = jiffies;
    + int i;
    +
    + mutex_lock(&data->lock);
    + if (time_before(local_jiffies, data->sensors_last_updated +
    + SENSOR_REFRESH_INTERVAL)
    + && data->sensors_valid)
    + goto no_sensor_update;
    +
    + for (i = 0; i < ADT7462_TEMP_COUNT; i++) {
    + /*
    + * Reading the fractional register locks the integral
    + * register until both have been read.
    + */
    + data->temp_frac[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_TEMP_REG(i));
    + data->temp[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_TEMP_REG(i) + 1);
    + }
    +
    + for (i = 0; i < ADT7462_FAN_COUNT; i++)
    + data->fan[i] = adt7462_read_word_data(client,
    + ADT7462_REG_FAN(i));
    +
    + data->fan_enabled = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_FAN_ENABLE);
    +
    + for (i = 0; i < ADT7462_PWM_COUNT; i++)
    + data->pwm[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_PWM(i));
    +
    + for (i = 0; i < ADT7462_PIN_CFG_REG_COUNT; i++)
    + data->pin_cfg[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_PIN_CFG(i));
    +
    + for (i = 0; i < ADT7462_VOLT_COUNT; i++) {
    + int reg = ADT7462_REG_VOLT(data, i);
    + if (!reg)
    + data->voltages[i] = 0;
    + else
    + data->voltages[i] = i2c_smbus_read_byte_data(client,
    + reg);
    + }
    +
    + data->alarms[0] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM1);
    + data->alarms[1] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM2);
    + data->alarms[2] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM3);
    + data->alarms[3] = i2c_smbus_read_byte_data(client, ADT7462_REG_ALARM4);
    +
    + data->sensors_last_updated = local_jiffies;
    + data->sensors_valid = 1;
    +
    +no_sensor_update:
    + if (time_before(local_jiffies, data->limits_last_updated +
    + LIMIT_REFRESH_INTERVAL)
    + && data->limits_valid)
    + goto out;
    +
    + for (i = 0; i < ADT7462_TEMP_COUNT; i++) {
    + data->temp_min[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_TEMP_MIN_REG(i));
    + data->temp_max[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_TEMP_MAX_REG(i));
    + }
    +
    + for (i = 0; i < ADT7462_FAN_COUNT; i++)
    + data->fan_min[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_FAN_MIN(i));
    +
    + for (i = 0; i < ADT7462_VOLT_COUNT; i++) {
    + int reg = ADT7462_REG_VOLT_MAX(data, i);
    + data->volt_max[i] =
    + (reg ? i2c_smbus_read_byte_data(client, reg) : 0);
    +
    + reg = ADT7462_REG_VOLT_MIN(data, i);
    + data->volt_min[i] =
    + (reg ? i2c_smbus_read_byte_data(client, reg) : 0);
    + }
    +
    + for (i = 0; i < ADT7462_PWM_COUNT; i++) {
    + data->pwm_min[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_PWM_MIN(i));
    + data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_PWM_TMIN(i));
    + data->pwm_trange[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_PWM_TRANGE(i));
    + data->pwm_cfg[i] = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_PWM_CFG(i));
    + }
    +
    + data->pwm_max = i2c_smbus_read_byte_data(client, ADT7462_REG_PWM_MAX);
    +
    + data->cfg2 = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2);
    +
    + data->limits_last_updated = local_jiffies;
    + data->limits_valid = 1;
    +
    +out:
    + mutex_unlock(&data->lock);
    + return data;
    +}
    +
    +static ssize_t show_temp_min(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    +
    + if (!temp_enabled(data, attr->index))
    + return sprintf(buf, "0\n");
    +
    + return sprintf(buf, "%d\n", 1000 * (data->temp_min[attr->index] - 64));
    +}
    +
    +static ssize_t set_temp_min(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
    + return -EINVAL;
    +
    + temp = (temp / 1000) + 64;
    + if (!range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->temp_min[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_TEMP_MIN_REG(attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_temp_max(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    +
    + if (!temp_enabled(data, attr->index))
    + return sprintf(buf, "0\n");
    +
    + return sprintf(buf, "%d\n", 1000 * (data->temp_max[attr->index] - 64));
    +}
    +
    +static ssize_t set_temp_max(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
    + return -EINVAL;
    +
    + temp = (temp / 1000) + 64;
    + if (!range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->temp_max[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_TEMP_MAX_REG(attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + u8 frac = data->temp_frac[attr->index] >> TEMP_FRAC_OFFSET;
    +
    + if (!temp_enabled(data, attr->index))
    + return sprintf(buf, "0\n");
    +
    + return sprintf(buf, "%d\n", 1000 * (data->temp[attr->index] - 64) +
    + 250 * frac);
    +}
    +
    +static ssize_t show_temp_label(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    +
    + return sprintf(buf, "%s\n", temp_label(data, attr->index));
    +}
    +
    +static ssize_t show_volt_max(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + int x = voltage_multiplier(data, attr->index);
    +
    + x *= data->volt_max[attr->index];
    + x /= 1000; /* convert from uV to mV */
    +
    + return sprintf(buf, "%d\n", x);
    +}
    +
    +static ssize_t set_volt_max(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + int x = voltage_multiplier(data, attr->index);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !x)
    + return -EINVAL;
    +
    + temp *= 1000; /* convert mV to uV */
    + temp /= x;
    + if (!range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->volt_max[attr->index] = temp;
    + i2c_smbus_write_byte_data(client,
    + ADT7462_REG_VOLT_MAX(data, attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_volt_min(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + int x = voltage_multiplier(data, attr->index);
    +
    + x *= data->volt_min[attr->index];
    + x /= 1000; /* convert from uV to mV */
    +
    + return sprintf(buf, "%d\n", x);
    +}
    +
    +static ssize_t set_volt_min(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + int x = voltage_multiplier(data, attr->index);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !x)
    + return -EINVAL;
    +
    + temp *= 1000; /* convert mV to uV */
    + temp /= x;
    + if (!range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->volt_min[attr->index] = temp;
    + i2c_smbus_write_byte_data(client,
    + ADT7462_REG_VOLT_MIN(data, attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_voltage(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + int x = voltage_multiplier(data, attr->index);
    +
    + x *= data->voltages[attr->index];
    + x /= 1000; /* convert from uV to mV */
    +
    + return sprintf(buf, "%d\n", x);
    +}
    +
    +static ssize_t show_voltage_label(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    +
    + return sprintf(buf, "%s\n", voltage_label(data, attr->index));
    +}
    +
    +static ssize_t show_alarm(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + int reg = attr->index >> ADT7462_ALARM_REG_SHIFT;
    + int mask = attr->index & ADT7462_ALARM_FLAG_MASK;
    +
    + if (data->alarms[reg] & mask)
    + return sprintf(buf, "1\n");
    + else
    + return sprintf(buf, "0\n");
    +}
    +
    +static int fan_enabled(struct adt7462_data *data, int fan)
    +{
    + return data->fan_enabled & (1 << fan);
    +}
    +
    +static ssize_t show_fan_min(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + u16 temp;
    +
    + temp = data->fan_min[attr->index];
    +
    + if (!fan_enabled(data, attr->index) ||
    + !FAN_DATA_VALID(temp))
    + return sprintf(buf, "0\n");
    +
    + temp <<= 8;
    +
    + return sprintf(buf, "%d\n", FAN_PERIOD_TO_RPM(temp));
    +}
    +
    +static ssize_t set_fan_min(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf, size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !temp ||
    + !fan_enabled(data, attr->index))
    + return -EINVAL;
    +
    + temp = FAN_RPM_TO_PERIOD(temp);
    + temp >>= 8;
    + if (!range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->fan_min[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_FAN_MIN(attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    +
    + if (!fan_enabled(data, attr->index) ||
    + !FAN_DATA_VALID(data->fan[attr->index]))
    + return sprintf(buf, "0\n");
    +
    + return sprintf(buf, "%d\n",
    + FAN_PERIOD_TO_RPM(data->fan[attr->index]));
    +}
    +
    +static ssize_t show_force_pwm_max(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct adt7462_data *data = adt7462_update_device(dev);
    + return sprintf(buf, "%d\n", (data->cfg2 & ADT7462_FSPD_MASK ? 1 : 0));
    +}
    +
    +static ssize_t set_force_pwm_max(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    + u8 reg;
    +
    + if (strict_strtol(buf, 10, &temp))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + reg = i2c_smbus_read_byte_data(client, ADT7462_REG_CFG2);
    + if (temp)
    + reg |= ADT7462_FSPD_MASK;
    + else
    + reg &= ~ADT7462_FSPD_MASK;
    + data->cfg2 = reg;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_CFG2, reg);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + return sprintf(buf, "%d\n", data->pwm[attr->index]);
    +}
    +
    +static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
    + const char *buf, size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->pwm[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_PWM(attr->index), temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_pwm_max(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct adt7462_data *data = adt7462_update_device(dev);
    + return sprintf(buf, "%d\n", data->pwm_max);
    +}
    +
    +static ssize_t set_pwm_max(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->pwm_max = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MAX, temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_pwm_min(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
    +}
    +
    +static ssize_t set_pwm_min(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp) || !range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->pwm_min[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_MIN(attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_pwm_hyst(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + return sprintf(buf, "%d\n", 1000 *
    + (data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK));
    +}
    +
    +static ssize_t set_pwm_hyst(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp))
    + return -EINVAL;
    +
    + temp /= 1000;
    + if (!range_check(temp, 0, 15))
    + return -EINVAL;
    +
    + /* package things up */
    + temp &= ADT7462_PWM_HYST_MASK;
    + temp |= data->pwm_trange[attr->index] & ADT7462_PWM_RANGE_MASK;
    +
    + mutex_lock(&data->lock);
    + data->pwm_trange[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_pwm_tmax(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    +
    + /* tmax = tmin + trange */
    + int trange = trange_values[data->pwm_trange[attr->index] >>
    + ADT7462_PWM_RANGE_SHIFT];
    + int tmin = (data->pwm_tmin[attr->index] - 64) * 1000;
    +
    + return sprintf(buf, "%d\n", tmin + trange);
    +}
    +
    +static ssize_t set_pwm_tmax(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + int temp;
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + int tmin, trange_value;
    + long trange;
    +
    + if (strict_strtol(buf, 10, &trange))
    + return -EINVAL;
    +
    + /* trange = tmax - tmin */
    + tmin = (data->pwm_tmin[attr->index] - 64) * 1000;
    + trange_value = find_trange_value(trange - tmin);
    +
    + if (trange_value < 0)
    + return -EINVAL;
    +
    + temp = trange_value << ADT7462_PWM_RANGE_SHIFT;
    + temp |= data->pwm_trange[attr->index] & ADT7462_PWM_HYST_MASK;
    +
    + mutex_lock(&data->lock);
    + data->pwm_trange[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TRANGE(attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_pwm_tmin(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + return sprintf(buf, "%d\n", 1000 * (data->pwm_tmin[attr->index] - 64));
    +}
    +
    +static ssize_t set_pwm_tmin(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp))
    + return -EINVAL;
    +
    + temp = (temp / 1000) + 64;
    + if (!range_check(temp, 0, 255))
    + return -EINVAL;
    +
    + mutex_lock(&data->lock);
    + data->pwm_tmin[attr->index] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_TMIN(attr->index),
    + temp);
    + mutex_unlock(&data->lock);
    +
    + return count;
    +}
    +
    +static ssize_t show_pwm_auto(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + int cfg = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT;
    +
    + switch (cfg) {
    + case 4: /* off */
    + return sprintf(buf, "0\n");
    + case 7: /* manual */
    + return sprintf(buf, "1\n");
    + default: /* automatic */
    + return sprintf(buf, "2\n");
    + }
    +}
    +
    +static void set_pwm_channel(struct i2c_client *client,
    + struct adt7462_data *data,
    + int which,
    + int value)
    +{
    + int temp = data->pwm_cfg[which] & ~ADT7462_PWM_CHANNEL_MASK;
    + temp |= value << ADT7462_PWM_CHANNEL_SHIFT;
    +
    + mutex_lock(&data->lock);
    + data->pwm_cfg[which] = temp;
    + i2c_smbus_write_byte_data(client, ADT7462_REG_PWM_CFG(which), temp);
    + mutex_unlock(&data->lock);
    +}
    +
    +static ssize_t set_pwm_auto(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp))
    + return -EINVAL;
    +
    + switch (temp) {
    + case 0: /* off */
    + set_pwm_channel(client, data, attr->index, 4);
    + return count;
    + case 1: /* manual */
    + set_pwm_channel(client, data, attr->index, 7);
    + return count;
    + default:
    + return -EINVAL;
    + }
    +}
    +
    +static ssize_t show_pwm_auto_temp(struct device *dev,
    + struct device_attribute *devattr,
    + char *buf)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct adt7462_data *data = adt7462_update_device(dev);
    + int channel = data->pwm_cfg[attr->index] >> ADT7462_PWM_CHANNEL_SHIFT;
    +
    + switch (channel) {
    + case 0: /* temp[1234] only */
    + case 1:
    + case 2:
    + case 3:
    + return sprintf(buf, "%d\n", (1 << channel));
    + case 5: /* temp1 & temp4 */
    + return sprintf(buf, "9\n");
    + case 6:
    + return sprintf(buf, "15\n");
    + default:
    + return sprintf(buf, "0\n");
    + }
    +}
    +
    +static int cvt_auto_temp(int input)
    +{
    + if (input == 0xF)
    + return 6;
    + if (input == 0x9)
    + return 5;
    + if (input < 1 || !is_power_of_2(input))
    + return -EINVAL;
    + return ilog2(input);
    +}
    +
    +static ssize_t set_pwm_auto_temp(struct device *dev,
    + struct device_attribute *devattr,
    + const char *buf,
    + size_t count)
    +{
    + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
    + struct i2c_client *client = to_i2c_client(dev);
    + struct adt7462_data *data = i2c_get_clientdata(client);
    + long temp;
    +
    + if (strict_strtol(buf, 10, &temp))
    + return -EINVAL;
    +
    + temp = cvt_auto_temp(temp);
    + if (temp < 0)
    + return temp;
    +
    + set_pwm_channel(client, data, attr->index, temp);
    +
    + return count;
    +}
    +
    +static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
    + set_temp_max, 0);
    +static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
    + set_temp_max, 1);
    +static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
    + set_temp_max, 2);
    +static SENSOR_DEVICE_ATTR(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
    + set_temp_max, 3);
    +
    +static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
    + set_temp_min, 0);
    +static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
    + set_temp_min, 1);
    +static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
    + set_temp_min, 2);
    +static SENSOR_DEVICE_ATTR(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
    + set_temp_min, 3);
    +
    +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
    +static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
    +static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
    +static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
    +
    +static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0);
    +static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1);
    +static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2);
    +static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3);
    +
    +static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM1 | ADT7462_LT_ALARM);
    +static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM1 | ADT7462_R1T_ALARM);
    +static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM1 | ADT7462_R2T_ALARM);
    +static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM1 | ADT7462_R3T_ALARM);
    +
    +static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 0);
    +static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 1);
    +static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 2);
    +static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 3);
    +static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 4);
    +static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 5);
    +static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 6);
    +static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 7);
    +static SENSOR_DEVICE_ATTR(in9_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 8);
    +static SENSOR_DEVICE_ATTR(in10_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 9);
    +static SENSOR_DEVICE_ATTR(in11_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 10);
    +static SENSOR_DEVICE_ATTR(in12_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 11);
    +static SENSOR_DEVICE_ATTR(in13_max, S_IWUSR | S_IRUGO, show_volt_max,
    + set_volt_max, 12);
    +
    +static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 0);
    +static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 1);
    +static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 2);
    +static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 3);
    +static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 4);
    +static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 5);
    +static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 6);
    +static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 7);
    +static SENSOR_DEVICE_ATTR(in9_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 8);
    +static SENSOR_DEVICE_ATTR(in10_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 9);
    +static SENSOR_DEVICE_ATTR(in11_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 10);
    +static SENSOR_DEVICE_ATTR(in12_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 11);
    +static SENSOR_DEVICE_ATTR(in13_min, S_IWUSR | S_IRUGO, show_volt_min,
    + set_volt_min, 12);
    +
    +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_voltage, NULL, 0);
    +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_voltage, NULL, 1);
    +static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_voltage, NULL, 2);
    +static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_voltage, NULL, 3);
    +static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_voltage, NULL, 4);
    +static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_voltage, NULL, 5);
    +static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_voltage, NULL, 6);
    +static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_voltage, NULL, 7);
    +static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, show_voltage, NULL, 8);
    +static SENSOR_DEVICE_ATTR(in10_input, S_IRUGO, show_voltage, NULL, 9);
    +static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, show_voltage, NULL, 10);
    +static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, show_voltage, NULL, 11);
    +static SENSOR_DEVICE_ATTR(in13_input, S_IRUGO, show_voltage, NULL, 12);
    +
    +static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_voltage_label, NULL, 0);
    +static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_voltage_label, NULL, 1);
    +static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_voltage_label, NULL, 2);
    +static SENSOR_DEVICE_ATTR(in4_label, S_IRUGO, show_voltage_label, NULL, 3);
    +static SENSOR_DEVICE_ATTR(in5_label, S_IRUGO, show_voltage_label, NULL, 4);
    +static SENSOR_DEVICE_ATTR(in6_label, S_IRUGO, show_voltage_label, NULL, 5);
    +static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_voltage_label, NULL, 6);
    +static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_voltage_label, NULL, 7);
    +static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_voltage_label, NULL, 8);
    +static SENSOR_DEVICE_ATTR(in10_label, S_IRUGO, show_voltage_label, NULL, 9);
    +static SENSOR_DEVICE_ATTR(in11_label, S_IRUGO, show_voltage_label, NULL, 10);
    +static SENSOR_DEVICE_ATTR(in12_label, S_IRUGO, show_voltage_label, NULL, 11);
    +static SENSOR_DEVICE_ATTR(in13_label, S_IRUGO, show_voltage_label, NULL, 12);
    +
    +static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V0_ALARM);
    +static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V7_ALARM);
    +static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V2_ALARM);
    +static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V6_ALARM);
    +static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V5_ALARM);
    +static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V4_ALARM);
    +static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V3_ALARM);
    +static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM2 | ADT7462_V1_ALARM);
    +static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM3 | ADT7462_V10_ALARM);
    +static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM3 | ADT7462_V9_ALARM);
    +static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM3 | ADT7462_V8_ALARM);
    +static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM3 | ADT7462_V11_ALARM);
    +static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM3 | ADT7462_V12_ALARM);
    +
    +static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 0);
    +static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 1);
    +static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 2);
    +static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 3);
    +static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 4);
    +static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 5);
    +static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 6);
    +static SENSOR_DEVICE_ATTR(fan8_min, S_IWUSR | S_IRUGO, show_fan_min,
    + set_fan_min, 7);
    +
    +static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
    +static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
    +static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
    +static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
    +static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4);
    +static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan, NULL, 5);
    +static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan, NULL, 6);
    +static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan, NULL, 7);
    +
    +static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F0_ALARM);
    +static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F1_ALARM);
    +static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F2_ALARM);
    +static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F3_ALARM);
    +static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F4_ALARM);
    +static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F5_ALARM);
    +static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F6_ALARM);
    +static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_alarm, NULL,
    + ADT7462_ALARM4 | ADT7462_F7_ALARM);
    +
    +static SENSOR_DEVICE_ATTR(force_pwm_max, S_IWUSR | S_IRUGO,
    + show_force_pwm_max, set_force_pwm_max, 0);
    +
    +static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
    +static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
    +static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
    +static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
    +
    +static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_min, set_pwm_min, 0);
    +static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_min, set_pwm_min, 1);
    +static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_min, set_pwm_min, 2);
    +static SENSOR_DEVICE_ATTR(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_min, set_pwm_min, 3);
    +
    +static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_max, set_pwm_max, 0);
    +static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_max, set_pwm_max, 1);
    +static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_max, set_pwm_max, 2);
    +static SENSOR_DEVICE_ATTR(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
    + show_pwm_max, set_pwm_max, 3);
    +
    +static SENSOR_DEVICE_ATTR(pwm1_auto_point1_hyst, S_IWUSR | S_IRUGO,
    + show_pwm_hyst, set_pwm_hyst, 0);
    +static SENSOR_DEVICE_ATTR(pwm2_auto_point1_hyst, S_IWUSR | S_IRUGO,
    + show_pwm_hyst, set_pwm_hyst, 1);
    +static SENSOR_DEVICE_ATTR(pwm3_auto_point1_hyst, S_IWUSR | S_IRUGO,
    + show_pwm_hyst, set_pwm_hyst, 2);
    +static SENSOR_DEVICE_ATTR(pwm4_auto_point1_hyst, S_IWUSR | S_IRUGO,
    + show_pwm_hyst, set_pwm_hyst, 3);
    +
    +static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmin, set_pwm_tmin, 0);
    +static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmin, set_pwm_tmin, 1);
    +static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmin, set_pwm_tmin, 2);
    +static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmin, set_pwm_tmin, 3);
    +
    +static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmax, set_pwm_tmax, 0);
    +static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmax, set_pwm_tmax, 1);
    +static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmax, set_pwm_tmax, 2);
    +static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IWUSR | S_IRUGO,
    + show_pwm_tmax, set_pwm_tmax, 3);
    +
    +static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
    + set_pwm_auto, 0);
    +static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
    + set_pwm_auto, 1);
    +static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
    + set_pwm_auto, 2);
    +static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
    + set_pwm_auto, 3);
    +
    +static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
    + show_pwm_auto_temp, set_pwm_auto_temp, 0);
    +static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
    + show_pwm_auto_temp, set_pwm_auto_temp, 1);
    +static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
    + show_pwm_auto_temp, set_pwm_auto_temp, 2);
    +static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
    + show_pwm_auto_temp, set_pwm_auto_temp, 3);
    +
    +static struct attribute *adt7462_attr[] =
    +{
    + &sensor_dev_attr_temp1_max.dev_attr.attr,
    + &sensor_dev_attr_temp2_max.dev_attr.attr,
    + &sensor_dev_attr_temp3_max.dev_attr.attr,
    + &sensor_dev_attr_temp4_max.dev_attr.attr,
    +
    + &sensor_dev_attr_temp1_min.dev_attr.attr,
    + &sensor_dev_attr_temp2_min.dev_attr.attr,
    + &sensor_dev_attr_temp3_min.dev_attr.attr,
    + &sensor_dev_attr_temp4_min.dev_attr.attr,
    +
    + &sensor_dev_attr_temp1_input.dev_attr.attr,
    + &sensor_dev_attr_temp2_input.dev_attr.attr,
    + &sensor_dev_attr_temp3_input.dev_attr.attr,
    + &sensor_dev_attr_temp4_input.dev_attr.attr,
    +
    + &sensor_dev_attr_temp1_label.dev_attr.attr,
    + &sensor_dev_attr_temp2_label.dev_attr.attr,
    + &sensor_dev_attr_temp3_label.dev_attr.attr,
    + &sensor_dev_attr_temp4_label.dev_attr.attr,
    +
    + &sensor_dev_attr_temp1_alarm.dev_attr.attr,
    + &sensor_dev_attr_temp2_alarm.dev_attr.attr,
    + &sensor_dev_attr_temp3_alarm.dev_attr.attr,
    + &sensor_dev_attr_temp4_alarm.dev_attr.attr,
    +
    + &sensor_dev_attr_in1_max.dev_attr.attr,
    + &sensor_dev_attr_in2_max.dev_attr.attr,
    + &sensor_dev_attr_in3_max.dev_attr.attr,
    + &sensor_dev_attr_in4_max.dev_attr.attr,
    + &sensor_dev_attr_in5_max.dev_attr.attr,
    + &sensor_dev_attr_in6_max.dev_attr.attr,
    + &sensor_dev_attr_in7_max.dev_attr.attr,
    + &sensor_dev_attr_in8_max.dev_attr.attr,
    + &sensor_dev_attr_in9_max.dev_attr.attr,
    + &sensor_dev_attr_in10_max.dev_attr.attr,
    + &sensor_dev_attr_in11_max.dev_attr.attr,
    + &sensor_dev_attr_in12_max.dev_attr.attr,
    + &sensor_dev_attr_in13_max.dev_attr.attr,
    +
    + &sensor_dev_attr_in1_min.dev_attr.attr,
    + &sensor_dev_attr_in2_min.dev_attr.attr,
    + &sensor_dev_attr_in3_min.dev_attr.attr,
    + &sensor_dev_attr_in4_min.dev_attr.attr,
    + &sensor_dev_attr_in5_min.dev_attr.attr,
    + &sensor_dev_attr_in6_min.dev_attr.attr,
    + &sensor_dev_attr_in7_min.dev_attr.attr,
    + &sensor_dev_attr_in8_min.dev_attr.attr,
    + &sensor_dev_attr_in9_min.dev_attr.attr,
    + &sensor_dev_attr_in10_min.dev_attr.attr,
    + &sensor_dev_attr_in11_min.dev_attr.attr,
    + &sensor_dev_attr_in12_min.dev_attr.attr,
    + &sensor_dev_attr_in13_min.dev_attr.attr,
    +
    + &sensor_dev_attr_in1_input.dev_attr.attr,
    + &sensor_dev_attr_in2_input.dev_attr.attr,
    + &sensor_dev_attr_in3_input.dev_attr.attr,
    + &sensor_dev_attr_in4_input.dev_attr.attr,
    + &sensor_dev_attr_in5_input.dev_attr.attr,
    + &sensor_dev_attr_in6_input.dev_attr.attr,
    + &sensor_dev_attr_in7_input.dev_attr.attr,
    + &sensor_dev_attr_in8_input.dev_attr.attr,
    + &sensor_dev_attr_in9_input.dev_attr.attr,
    + &sensor_dev_attr_in10_input.dev_attr.attr,
    + &sensor_dev_attr_in11_input.dev_attr.attr,
    + &sensor_dev_attr_in12_input.dev_attr.attr,
    + &sensor_dev_attr_in13_input.dev_attr.attr,
    +
    + &sensor_dev_attr_in1_label.dev_attr.attr,
    + &sensor_dev_attr_in2_label.dev_attr.attr,
    + &sensor_dev_attr_in3_label.dev_attr.attr,
    + &sensor_dev_attr_in4_label.dev_attr.attr,
    + &sensor_dev_attr_in5_label.dev_attr.attr,
    + &sensor_dev_attr_in6_label.dev_attr.attr,
    + &sensor_dev_attr_in7_label.dev_attr.attr,
    + &sensor_dev_attr_in8_label.dev_attr.attr,
    + &sensor_dev_attr_in9_label.dev_attr.attr,
    + &sensor_dev_attr_in10_label.dev_attr.attr,
    + &sensor_dev_attr_in11_label.dev_attr.attr,
    + &sensor_dev_attr_in12_label.dev_attr.attr,
    + &sensor_dev_attr_in13_label.dev_attr.attr,
    +
    + &sensor_dev_attr_in1_alarm.dev_attr.attr,
    + &sensor_dev_attr_in2_alarm.dev_attr.attr,
    + &sensor_dev_attr_in3_alarm.dev_attr.attr,
    + &sensor_dev_attr_in4_alarm.dev_attr.attr,
    + &sensor_dev_attr_in5_alarm.dev_attr.attr,
    + &sensor_dev_attr_in6_alarm.dev_attr.attr,
    + &sensor_dev_attr_in7_alarm.dev_attr.attr,
    + &sensor_dev_attr_in8_alarm.dev_attr.attr,
    + &sensor_dev_attr_in9_alarm.dev_attr.attr,
    + &sensor_dev_attr_in10_alarm.dev_attr.attr,
    + &sensor_dev_attr_in11_alarm.dev_attr.attr,
    + &sensor_dev_attr_in12_alarm.dev_attr.attr,
    + &sensor_dev_attr_in13_alarm.dev_attr.attr,
    +
    + &sensor_dev_attr_fan1_min.dev_attr.attr,
    + &sensor_dev_attr_fan2_min.dev_attr.attr,
    + &sensor_dev_attr_fan3_min.dev_attr.attr,
    + &sensor_dev_attr_fan4_min.dev_attr.attr,
    + &sensor_dev_attr_fan5_min.dev_attr.attr,
    + &sensor_dev_attr_fan6_min.dev_attr.attr,
    + &sensor_dev_attr_fan7_min.dev_attr.attr,
    + &sensor_dev_attr_fan8_min.dev_attr.attr,
    +
    + &sensor_dev_attr_fan1_input.dev_attr.attr,
    + &sensor_dev_attr_fan2_input.dev_attr.attr,
    + &sensor_dev_attr_fan3_input.dev_attr.attr,
    + &sensor_dev_attr_fan4_input.dev_attr.attr,
    + &sensor_dev_attr_fan5_input.dev_attr.attr,
    + &sensor_dev_attr_fan6_input.dev_attr.attr,
    + &sensor_dev_attr_fan7_input.dev_attr.attr,
    + &sensor_dev_attr_fan8_input.dev_attr.attr,
    +
    + &sensor_dev_attr_fan1_alarm.dev_attr.attr,
    + &sensor_dev_attr_fan2_alarm.dev_attr.attr,
    + &sensor_dev_attr_fan3_alarm.dev_attr.attr,
    + &sensor_dev_attr_fan4_alarm.dev_attr.attr,
    + &sensor_dev_attr_fan5_alarm.dev_attr.attr,
    + &sensor_dev_attr_fan6_alarm.dev_attr.attr,
    + &sensor_dev_attr_fan7_alarm.dev_attr.attr,
    + &sensor_dev_attr_fan8_alarm.dev_attr.attr,
    +
    + &sensor_dev_attr_force_pwm_max.dev_attr.attr,
    + &sensor_dev_attr_pwm1.dev_attr.attr,
    + &sensor_dev_attr_pwm2.dev_attr.attr,
    + &sensor_dev_attr_pwm3.dev_attr.attr,
    + &sensor_dev_attr_pwm4.dev_attr.attr,
    + &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr ,
    + &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr ,
    + &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr ,
    + &sensor_dev_attr_pwm4_auto_point1_pwm.dev_attr.attr ,
    +
    + &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr ,
    + &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr ,
    + &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr ,
    + &sensor_dev_attr_pwm4_auto_point2_pwm.dev_attr.attr ,
    +
    + &sensor_dev_attr_pwm1_auto_point1_hyst.dev_attr.att r,
    + &sensor_dev_attr_pwm2_auto_point1_hyst.dev_attr.att r,
    + &sensor_dev_attr_pwm3_auto_point1_hyst.dev_attr.att r,
    + &sensor_dev_attr_pwm4_auto_point1_hyst.dev_attr.att r,
    +
    + &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.att r,
    + &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.att r,
    + &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.att r,
    + &sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.att r,
    +
    + &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.att r,
    + &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.att r,
    + &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.att r,
    + &sensor_dev_attr_pwm4_auto_point2_temp.dev_attr.att r,
    +
    + &sensor_dev_attr_pwm1_enable.dev_attr.attr,
    + &sensor_dev_attr_pwm2_enable.dev_attr.attr,
    + &sensor_dev_attr_pwm3_enable.dev_attr.attr,
    + &sensor_dev_attr_pwm4_enable.dev_attr.attr,
    +
    + &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.a ttr,
    + &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.a ttr,
    + &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.a ttr,
    + &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.a ttr,
    + NULL
    +};
    +
    +/* Return 0 if detection is successful, -ENODEV otherwise */
    +static int adt7462_detect(struct i2c_client *client, int kind,
    + struct i2c_board_info *info)
    +{
    + struct i2c_adapter *adapter = client->adapter;
    +
    + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
    + return -ENODEV;
    +
    + if (kind <= 0) {
    + int vendor, device, revision;
    +
    + vendor = i2c_smbus_read_byte_data(client, ADT7462_REG_VENDOR);
    + if (vendor != ADT7462_VENDOR)
    + return -ENODEV;
    +
    + device = i2c_smbus_read_byte_data(client, ADT7462_REG_DEVICE);
    + if (device != ADT7462_DEVICE)
    + return -ENODEV;
    +
    + revision = i2c_smbus_read_byte_data(client,
    + ADT7462_REG_REVISION);
    + if (revision != ADT7462_REVISION)
    + return -ENODEV;
    + } else
    + dev_dbg(&adapter->dev, "detection forced\n");
    +
    + strlcpy(info->type, "adt7462", I2C_NAME_SIZE);
    +
    + return 0;
    +}
    +
    +static int adt7462_probe(struct i2c_client *client,
    + const struct i2c_device_id *id)
    +{
    + struct adt7462_data *data;
    + int err;
    +
    + data = kzalloc(sizeof(struct adt7462_data), GFP_KERNEL);
    + if (!data) {
    + err = -ENOMEM;
    + goto exit;
    + }
    +
    + i2c_set_clientdata(client, data);
    + mutex_init(&data->lock);
    +
    + dev_info(&client->dev, "%s chip found\n", client->name);
    +
    + /* Register sysfs hooks */
    + data->attrs.attrs = adt7462_attr;
    + err = sysfs_create_group(&client->dev.kobj, &data->attrs);
    + if (err)
    + goto exit_free;
    +
    + data->hwmon_dev = hwmon_device_register(&client->dev);
    + if (IS_ERR(data->hwmon_dev)) {
    + err = PTR_ERR(data->hwmon_dev);
    + goto exit_remove;
    + }
    +
    + return 0;
    +
    +exit_remove:
    + sysfs_remove_group(&client->dev.kobj, &data->attrs);
    +exit_free:
    + kfree(data);
    +exit:
    + return err;
    +}
    +
    +static int adt7462_remove(struct i2c_client *client)
    +{
    + struct adt7462_data *data = i2c_get_clientdata(client);
    +
    + hwmon_device_unregister(data->hwmon_dev);
    + sysfs_remove_group(&client->dev.kobj, &data->attrs);
    + kfree(data);
    + return 0;
    +}
    +
    +static int __init adt7462_init(void)
    +{
    + return i2c_add_driver(&adt7462_driver);
    +}
    +
    +static void __exit adt7462_exit(void)
    +{
    + i2c_del_driver(&adt7462_driver);
    +}
    +
    +MODULE_AUTHOR("Darrick J. Wong ");
    +MODULE_DESCRIPTION("ADT7462 driver");
    +MODULE_LICENSE("GPL");
    +
    +module_init(adt7462_init);
    +module_exit(adt7462_exit);
    --
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  2. Re: [PATCH] new hwmon driver adt7462

    Hi Darrick,

    On Tue, 30 Sep 2008 23:54:14 -0700, Darrick J. Wong wrote:
    > New driver to feed on. As Jean mentioned a couple of years ago, this
    > chip is a beast with odd combinations of 8 fans, 4 temperatures, and
    > 13 voltage sensors. This driver has been tested on an IntelliStation
    > Z30.
    >
    > Signed-off-by: Darrick J. Wong
    > ---
    >
    > Documentation/hwmon/adt7462 | 67 +
    > drivers/hwmon/Kconfig | 10
    > drivers/hwmon/Makefile | 1
    > drivers/hwmon/adt7462.c | 1991 +++++++++++++++++++++++++++++++++++++++++++
    > 4 files changed, 2069 insertions(+), 0 deletions(-)


    Two years ago, Eric Olsen (Cc'd) asked for support for this device and
    even said he would write the driver himself. We didn't hear from him
    since then. Now that we have a driver, maybe Eric can help testing it
    and maybe even reviewing it?

    I clearly do not have the time for this myself (not on my free time, at
    least.)

    --
    Jean Delvare
    --
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