hwmon: (adt7475) Add support for the ADT7490
Add support for the Analog Devices ADT7490 chip. This chip is largely compatible with the ADT7473 and ADT7475, with additional features. In particular, it has 6 voltage inputs instead of 2. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: "Darrick J. Wong" <djwong@us.ibm.com>hifive-unleashed-5.1
Jean Delvare
parent
d656b6fde2
commit
3d84998171
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@ -10,24 +10,31 @@ Supported chips:
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Prefix: 'adt7475'
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Addresses scanned: I2C 0x2E
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Datasheet: Publicly available at the On Semiconductors website
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* Analog Devices ADT7490
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Prefix: 'adt7490'
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Addresses scanned: I2C 0x2C, 0x2D, 0x2E
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Datasheet: Publicly available at the On Semiconductors website
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Authors:
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Jordan Crouse
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Hans de Goede
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Darrick J. Wong (documentation)
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Jean Delvare
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Description
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-----------
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This driver implements support for the Analog Devices ADT7473 and ADT7475
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chip family. Both chips differ only in minor details. They will be
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collectively designed by the name "ADT747x" in the rest of this document.
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This driver implements support for the Analog Devices ADT7473, ADT7475 and
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ADT7490 chip family. The ADT7473 and ADT7475 differ only in minor details.
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The ADT7490 has additional features, including extra voltage measurement
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inputs and PECI support. All the supported chips will be collectively
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designed by the name "ADT747x" in the rest of this document.
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The ADT747x uses the 2-wire interface compatible with the SMBus 2.0
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specification. Using an analog to digital converter it measures three (3)
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temperatures and two (2) voltages. It has four (4) 16-bit counters for
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measuring fan speed. There are three (3) PWM outputs that can be used
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temperatures and two (2) or more voltages. It has four (4) 16-bit counters
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for measuring fan speed. There are three (3) PWM outputs that can be used
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to control fan speed.
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A sophisticated control system for the PWM outputs is designed into the
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@ -45,6 +52,23 @@ The ADT747x samples all inputs continuously. The driver will not read
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the registers more often than once every other second. Further,
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configuration data is only read once per minute.
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Chip Differences Summary
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------------------------
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ADT7473:
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* 2 voltage inputs
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* system acoustics optimizations (not implemented)
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ADT7475:
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* 2 voltage inputs
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ADT7490:
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* 6 voltage inputs
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* 1 Imon input (not implemented)
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* PECI support (not implemented)
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* 2 GPIO pins (not implemented)
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* system acoustics optimizations (not implemented)
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Special Features
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----------------
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@ -205,11 +205,11 @@ config SENSORS_ADT7473
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will be called adt7473.
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config SENSORS_ADT7475
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tristate "Analog Devices ADT7473 and ADT7475"
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tristate "Analog Devices ADT7473, ADT7475 and ADT7490"
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depends on I2C && EXPERIMENTAL
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help
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If you say yes here you get support for the Analog Devices
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ADT7473 and ADT7475 hardware monitoring chips.
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ADT7473, ADT7475 and ADT7490 hardware monitoring chips.
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This driver can also be build as a module. If so, the module
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will be called adt7475.
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@ -3,7 +3,8 @@
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* Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
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* Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
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* Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
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* Copyright (C) 2009 Jean Delvare <khali@linux-fr.org>
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*
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* Derived from the lm83 driver by Jean Delvare
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*
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* This program is free software; you can redistribute it and/or modify
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@ -39,6 +40,9 @@
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/* 7475 Common Registers */
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#define REG_VTT 0x1E /* ADT7490 only */
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#define REG_EXTEND3 0x1F /* ADT7490 only */
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#define REG_VOLTAGE_BASE 0x20
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#define REG_TEMP_BASE 0x25
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#define REG_TACH_BASE 0x28
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@ -79,6 +83,11 @@
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#define REG_CONFIG5 0x7C
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#define REG_CONFIG4 0x7D
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#define REG_STATUS4 0x81 /* ADT7490 only */
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#define REG_VTT_MIN 0x84 /* ADT7490 only */
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#define REG_VTT_MAX 0x86 /* ADT7490 only */
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#define CONFIG4_MAXDUTY 0x08
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#define CONFIG5_TWOSCOMP 0x01
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@ -119,11 +128,12 @@
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static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
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I2C_CLIENT_INSMOD_2(adt7473, adt7475);
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I2C_CLIENT_INSMOD_3(adt7473, adt7475, adt7490);
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static const struct i2c_device_id adt7475_id[] = {
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{ "adt7473", adt7473 },
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{ "adt7475", adt7475 },
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{ "adt7490", adt7490 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, adt7475_id);
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@ -139,7 +149,7 @@ struct adt7475_data {
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u8 config4;
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u8 config5;
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u8 has_voltage;
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u16 alarms;
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u32 alarms;
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u16 voltage[3][6];
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u16 temp[7][3];
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u16 tach[2][4];
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@ -306,10 +316,17 @@ static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
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data->voltage[sattr->nr][sattr->index] = volt2reg(sattr->index, val);
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if (sattr->nr == MIN)
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reg = VOLTAGE_MIN_REG(sattr->index);
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else
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reg = VOLTAGE_MAX_REG(sattr->index);
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if (sattr->index < ADT7475_VOLTAGE_COUNT) {
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if (sattr->nr == MIN)
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reg = VOLTAGE_MIN_REG(sattr->index);
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else
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reg = VOLTAGE_MAX_REG(sattr->index);
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} else {
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if (sattr->nr == MIN)
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reg = REG_VTT_MIN;
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else
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reg = REG_VTT_MAX;
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}
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i2c_smbus_write_byte_data(client, reg,
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data->voltage[sattr->nr][sattr->index] >> 2);
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@ -818,6 +835,12 @@ static ssize_t set_pwm_at_crit(struct device *dev,
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return count;
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}
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static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
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static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MAX, 0);
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static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MIN, 0);
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static SENSOR_DEVICE_ATTR_2(in0_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
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static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
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static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MAX, 1);
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@ -830,6 +853,24 @@ static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
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static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MIN, 2);
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static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 2);
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static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_voltage, NULL, INPUT, 3);
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static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MAX, 3);
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static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MIN, 3);
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static SENSOR_DEVICE_ATTR_2(in3_alarm, S_IRUGO, show_voltage, NULL, ALARM, 3);
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static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_voltage, NULL, INPUT, 4);
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static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MAX, 4);
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static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MIN, 4);
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static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, show_voltage, NULL, ALARM, 8);
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static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_voltage, NULL, INPUT, 5);
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static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MAX, 5);
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static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_voltage,
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set_voltage, MIN, 5);
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static SENSOR_DEVICE_ATTR_2(in5_alarm, S_IRUGO, show_voltage, NULL, ALARM, 31);
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static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
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static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
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static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
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@ -1009,7 +1050,29 @@ static struct attribute *adt7475_attrs[] = {
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NULL,
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};
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/* Attributes specific to the ADT7490 */
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static struct attribute *adt7490_attrs[] = {
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&sensor_dev_attr_in0_input.dev_attr.attr,
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&sensor_dev_attr_in0_max.dev_attr.attr,
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&sensor_dev_attr_in0_min.dev_attr.attr,
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&sensor_dev_attr_in0_alarm.dev_attr.attr,
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&sensor_dev_attr_in3_input.dev_attr.attr,
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&sensor_dev_attr_in3_max.dev_attr.attr,
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&sensor_dev_attr_in3_min.dev_attr.attr,
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&sensor_dev_attr_in3_alarm.dev_attr.attr,
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&sensor_dev_attr_in4_input.dev_attr.attr,
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&sensor_dev_attr_in4_max.dev_attr.attr,
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&sensor_dev_attr_in4_min.dev_attr.attr,
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&sensor_dev_attr_in4_alarm.dev_attr.attr,
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&sensor_dev_attr_in5_input.dev_attr.attr,
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&sensor_dev_attr_in5_max.dev_attr.attr,
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&sensor_dev_attr_in5_min.dev_attr.attr,
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&sensor_dev_attr_in5_alarm.dev_attr.attr,
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NULL
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};
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static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
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static struct attribute_group adt7490_attr_group = { .attrs = adt7490_attrs };
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static int adt7475_detect(struct i2c_client *client, int kind,
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struct i2c_board_info *info)
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@ -1032,9 +1095,11 @@ static int adt7475_detect(struct i2c_client *client, int kind,
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name = "adt7473";
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else if (devid == 0x75 && client->addr == 0x2e)
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name = "adt7475";
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else if ((devid2 & 0xfc) == 0x6c)
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name = "adt7490";
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else {
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dev_dbg(&adapter->dev,
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"Couldn't detect an ADT7473 or ADT7475 part at "
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"Couldn't detect an ADT7473/75/90 part at "
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"0x%02x\n", (unsigned int)client->addr);
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return -ENODEV;
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}
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@ -1059,6 +1124,9 @@ static int adt7475_probe(struct i2c_client *client,
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/* Initialize device-specific values */
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switch (id->driver_data) {
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case adt7490:
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data->has_voltage = 0x3f; /* in0 to in5 */
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break;
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default:
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data->has_voltage = 0x06; /* in1, in2 */
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}
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@ -1072,6 +1140,13 @@ static int adt7475_probe(struct i2c_client *client,
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if (ret)
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goto efree;
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if (id->driver_data == adt7490) {
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ret = sysfs_create_group(&client->dev.kobj,
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&adt7490_attr_group);
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if (ret)
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goto eremove;
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}
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data->hwmon_dev = hwmon_device_register(&client->dev);
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if (IS_ERR(data->hwmon_dev)) {
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ret = PTR_ERR(data->hwmon_dev);
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@ -1082,6 +1157,8 @@ static int adt7475_probe(struct i2c_client *client,
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eremove:
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sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
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if (data->has_voltage & 0x39)
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sysfs_remove_group(&client->dev.kobj, &adt7490_attr_group);
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efree:
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kfree(data);
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return ret;
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@ -1093,6 +1170,8 @@ static int adt7475_remove(struct i2c_client *client)
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hwmon_device_unregister(data->hwmon_dev);
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sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
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if (data->has_voltage & 0x39)
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sysfs_remove_group(&client->dev.kobj, &adt7490_attr_group);
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kfree(data);
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return 0;
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@ -1177,7 +1256,7 @@ static struct adt7475_data *adt7475_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct adt7475_data *data = i2c_get_clientdata(client);
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u8 ext;
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u16 ext;
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int i;
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mutex_lock(&data->lock);
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@ -1188,7 +1267,8 @@ static struct adt7475_data *adt7475_update_device(struct device *dev)
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data->alarms = adt7475_read(REG_STATUS2) << 8;
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data->alarms |= adt7475_read(REG_STATUS1);
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ext = adt7475_read(REG_EXTEND1);
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ext = (adt7475_read(REG_EXTEND2) << 8) |
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adt7475_read(REG_EXTEND1);
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for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
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if (!(data->has_voltage & (1 << i)))
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continue;
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@ -1197,11 +1277,17 @@ static struct adt7475_data *adt7475_update_device(struct device *dev)
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((ext >> (i * 2)) & 3);
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}
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ext = adt7475_read(REG_EXTEND2);
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for (i = 0; i < ADT7475_TEMP_COUNT; i++)
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data->temp[INPUT][i] =
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(adt7475_read(TEMP_REG(i)) << 2) |
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((ext >> ((i + 1) * 2)) & 3);
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((ext >> ((i + 5) * 2)) & 3);
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if (data->has_voltage & (1 << 5)) {
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data->alarms |= adt7475_read(REG_STATUS4) << 24;
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ext = adt7475_read(REG_EXTEND3);
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data->voltage[INPUT][5] = adt7475_read(REG_VTT) << 2 |
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((ext >> 4) & 3);
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}
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for (i = 0; i < ADT7475_TACH_COUNT; i++)
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data->tach[INPUT][i] =
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@ -1230,6 +1316,11 @@ static struct adt7475_data *adt7475_update_device(struct device *dev)
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adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
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}
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if (data->has_voltage & (1 << 5)) {
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data->voltage[MIN][5] = adt7475_read(REG_VTT_MIN) << 2;
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data->voltage[MAX][5] = adt7475_read(REG_VTT_MAX) << 2;
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}
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for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
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/* Adjust values so they match the input precision */
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data->temp[MIN][i] =
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