Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1873 insertions, 0 deletions

diff --git a/drivers/hwmon/adm1026.c b/drivers/hwmon/adm1026.c
new file mode 100644
index 0000000000..581d8edf70
--- /dev/null
+++ b/drivers/hwmon/adm1026.c
@@ -0,0 +1,1873 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * adm1026.c - Part of lm_sensors, Linux kernel modules for hardware
+ *	       monitoring
+ * Copyright (C) 2002, 2003  Philip Pokorny <ppokorny@penguincomputing.com>
+ * Copyright (C) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
+ *
+ * Chip details at:
+ *
+ * <https://www.onsemi.com/PowerSolutions/product.do?id=ADM1026>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/hwmon-vid.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
+
+static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
+				-1, -1, -1, -1, -1, -1, -1, -1 };
+static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
+				-1, -1, -1, -1, -1, -1, -1, -1 };
+static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
+				-1, -1, -1, -1, -1, -1, -1, -1 };
+static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
+				-1, -1, -1, -1, -1, -1, -1, -1 };
+static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
+module_param_array(gpio_input, int, NULL, 0);
+MODULE_PARM_DESC(gpio_input, "List of GPIO pins (0-16) to program as inputs");
+module_param_array(gpio_output, int, NULL, 0);
+MODULE_PARM_DESC(gpio_output,
+		 "List of GPIO pins (0-16) to program as outputs");
+module_param_array(gpio_inverted, int, NULL, 0);
+MODULE_PARM_DESC(gpio_inverted,
+		 "List of GPIO pins (0-16) to program as inverted");
+module_param_array(gpio_normal, int, NULL, 0);
+MODULE_PARM_DESC(gpio_normal,
+		 "List of GPIO pins (0-16) to program as normal/non-inverted");
+module_param_array(gpio_fan, int, NULL, 0);
+MODULE_PARM_DESC(gpio_fan, "List of GPIO pins (0-7) to program as fan tachs");
+
+/* Many ADM1026 constants specified below */
+
+/* The ADM1026 registers */
+#define ADM1026_REG_CONFIG1	0x00
+#define CFG1_MONITOR		0x01
+#define CFG1_INT_ENABLE		0x02
+#define CFG1_INT_CLEAR		0x04
+#define CFG1_AIN8_9		0x08
+#define CFG1_THERM_HOT		0x10
+#define CFG1_DAC_AFC		0x20
+#define CFG1_PWM_AFC		0x40
+#define CFG1_RESET		0x80
+
+#define ADM1026_REG_CONFIG2	0x01
+/* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */
+
+#define ADM1026_REG_CONFIG3	0x07
+#define CFG3_GPIO16_ENABLE	0x01
+#define CFG3_CI_CLEAR		0x02
+#define CFG3_VREF_250		0x04
+#define CFG3_GPIO16_DIR		0x40
+#define CFG3_GPIO16_POL		0x80
+
+#define ADM1026_REG_E2CONFIG	0x13
+#define E2CFG_READ		0x01
+#define E2CFG_WRITE		0x02
+#define E2CFG_ERASE		0x04
+#define E2CFG_ROM		0x08
+#define E2CFG_CLK_EXT		0x80
+
+/*
+ * There are 10 general analog inputs and 7 dedicated inputs
+ * They are:
+ *    0 - 9  =  AIN0 - AIN9
+ *       10  =  Vbat
+ *       11  =  3.3V Standby
+ *       12  =  3.3V Main
+ *       13  =  +5V
+ *       14  =  Vccp (CPU core voltage)
+ *       15  =  +12V
+ *       16  =  -12V
+ */
+static u16 ADM1026_REG_IN[] = {
+		0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
+		0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
+		0x2b, 0x2c, 0x2d, 0x2e, 0x2f
+	};
+static u16 ADM1026_REG_IN_MIN[] = {
+		0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
+		0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
+		0x4b, 0x4c, 0x4d, 0x4e, 0x4f
+	};
+static u16 ADM1026_REG_IN_MAX[] = {
+		0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
+		0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
+		0x43, 0x44, 0x45, 0x46, 0x47
+	};
+
+/*
+ * Temperatures are:
+ *    0 - Internal
+ *    1 - External 1
+ *    2 - External 2
+ */
+static u16 ADM1026_REG_TEMP[] = { 0x1f, 0x28, 0x29 };
+static u16 ADM1026_REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
+static u16 ADM1026_REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
+static u16 ADM1026_REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
+static u16 ADM1026_REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
+static u16 ADM1026_REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };
+
+#define ADM1026_REG_FAN(nr)		(0x38 + (nr))
+#define ADM1026_REG_FAN_MIN(nr)		(0x60 + (nr))
+#define ADM1026_REG_FAN_DIV_0_3		0x02
+#define ADM1026_REG_FAN_DIV_4_7		0x03
+
+#define ADM1026_REG_DAC			0x04
+#define ADM1026_REG_PWM			0x05
+
+#define ADM1026_REG_GPIO_CFG_0_3	0x08
+#define ADM1026_REG_GPIO_CFG_4_7	0x09
+#define ADM1026_REG_GPIO_CFG_8_11	0x0a
+#define ADM1026_REG_GPIO_CFG_12_15	0x0b
+/* CFG_16 in REG_CFG3 */
+#define ADM1026_REG_GPIO_STATUS_0_7	0x24
+#define ADM1026_REG_GPIO_STATUS_8_15	0x25
+/* STATUS_16 in REG_STATUS4 */
+#define ADM1026_REG_GPIO_MASK_0_7	0x1c
+#define ADM1026_REG_GPIO_MASK_8_15	0x1d
+/* MASK_16 in REG_MASK4 */
+
+#define ADM1026_REG_COMPANY		0x16
+#define ADM1026_REG_VERSTEP		0x17
+/* These are the recognized values for the above regs */
+#define ADM1026_COMPANY_ANALOG_DEV	0x41
+#define ADM1026_VERSTEP_GENERIC		0x40
+#define ADM1026_VERSTEP_ADM1026		0x44
+
+#define ADM1026_REG_MASK1		0x18
+#define ADM1026_REG_MASK2		0x19
+#define ADM1026_REG_MASK3		0x1a
+#define ADM1026_REG_MASK4		0x1b
+
+#define ADM1026_REG_STATUS1		0x20
+#define ADM1026_REG_STATUS2		0x21
+#define ADM1026_REG_STATUS3		0x22
+#define ADM1026_REG_STATUS4		0x23
+
+#define ADM1026_FAN_ACTIVATION_TEMP_HYST -6
+#define ADM1026_FAN_CONTROL_TEMP_RANGE	20
+#define ADM1026_PWM_MAX			255
+
+/*
+ * Conversions. Rounding and limit checking is only done on the TO_REG
+ * variants. Note that you should be a bit careful with which arguments
+ * these macros are called: arguments may be evaluated more than once.
+ */
+
+/*
+ * IN are scaled according to built-in resistors.  These are the
+ *   voltages corresponding to 3/4 of full scale (192 or 0xc0)
+ *   NOTE: The -12V input needs an additional factor to account
+ *      for the Vref pullup resistor.
+ *      NEG12_OFFSET = SCALE * Vref / V-192 - Vref
+ *                   = 13875 * 2.50 / 1.875 - 2500
+ *                   = 16000
+ *
+ * The values in this table are based on Table II, page 15 of the
+ *    datasheet.
+ */
+static int adm1026_scaling[] = { /* .001 Volts */
+		2250, 2250, 2250, 2250, 2250, 2250,
+		1875, 1875, 1875, 1875, 3000, 3330,
+		3330, 4995, 2250, 12000, 13875
+	};
+#define NEG12_OFFSET  16000
+#define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
+#define INS_TO_REG(n, val)	\
+		SCALE(clamp_val(val, 0, 255 * adm1026_scaling[n] / 192), \
+		      adm1026_scaling[n], 192)
+#define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
+
+/*
+ * FAN speed is measured using 22.5kHz clock and counts for 2 pulses
+ *   and we assume a 2 pulse-per-rev fan tach signal
+ *      22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
+ */
+#define FAN_TO_REG(val, div)  ((val) <= 0 ? 0xff : \
+				clamp_val(1350000 / ((val) * (div)), \
+					      1, 254))
+#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 0xff ? 0 : \
+				1350000 / ((val) * (div)))
+#define DIV_FROM_REG(val) (1 << (val))
+#define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
+
+/* Temperature is reported in 1 degC increments */
+#define TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
+					   1000)
+#define TEMP_FROM_REG(val) ((val) * 1000)
+#define OFFSET_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
+					     1000)
+#define OFFSET_FROM_REG(val) ((val) * 1000)
+
+#define PWM_TO_REG(val) (clamp_val(val, 0, 255))
+#define PWM_FROM_REG(val) (val)
+
+#define PWM_MIN_TO_REG(val) ((val) & 0xf0)
+#define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
+
+/*
+ * Analog output is a voltage, and scaled to millivolts.  The datasheet
+ *   indicates that the DAC could be used to drive the fans, but in our
+ *   example board (Arima HDAMA) it isn't connected to the fans at all.
+ */
+#define DAC_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, 0, 2500) * 255, \
+					  2500)
+#define DAC_FROM_REG(val) (((val) * 2500) / 255)
+
+/*
+ * Chip sampling rates
+ *
+ * Some sensors are not updated more frequently than once per second
+ *    so it doesn't make sense to read them more often than that.
+ *    We cache the results and return the saved data if the driver
+ *    is called again before a second has elapsed.
+ *
+ * Also, there is significant configuration data for this chip
+ *    So, we keep the config data up to date in the cache
+ *    when it is written and only sample it once every 5 *minutes*
+ */
+#define ADM1026_DATA_INTERVAL		(1 * HZ)
+#define ADM1026_CONFIG_INTERVAL		(5 * 60 * HZ)
+
+/*
+ * We allow for multiple chips in a single system.
+ *
+ * For each registered ADM1026, we need to keep state information
+ * at client->data. The adm1026_data structure is dynamically
+ * allocated, when a new client structure is allocated.
+ */
+
+struct pwm_data {
+	u8 pwm;
+	u8 enable;
+	u8 auto_pwm_min;
+};
+
+struct adm1026_data {
+	struct i2c_client *client;
+	const struct attribute_group *groups[3];
+
+	struct mutex update_lock;
+	bool valid;		/* true if following fields are valid */
+	unsigned long last_reading;	/* In jiffies */
+	unsigned long last_config;	/* In jiffies */
+
+	u8 in[17];		/* Register value */
+	u8 in_max[17];		/* Register value */
+	u8 in_min[17];		/* Register value */
+	s8 temp[3];		/* Register value */
+	s8 temp_min[3];		/* Register value */
+	s8 temp_max[3];		/* Register value */
+	s8 temp_tmin[3];	/* Register value */
+	s8 temp_crit[3];	/* Register value */
+	s8 temp_offset[3];	/* Register value */
+	u8 fan[8];		/* Register value */
+	u8 fan_min[8];		/* Register value */
+	u8 fan_div[8];		/* Decoded value */
+	struct pwm_data pwm1;	/* Pwm control values */
+	u8 vrm;			/* VRM version */
+	u8 analog_out;		/* Register value (DAC) */
+	long alarms;		/* Register encoding, combined */
+	long alarm_mask;	/* Register encoding, combined */
+	long gpio;		/* Register encoding, combined */
+	long gpio_mask;		/* Register encoding, combined */
+	u8 gpio_config[17];	/* Decoded value */
+	u8 config1;		/* Register value */
+	u8 config2;		/* Register value */
+	u8 config3;		/* Register value */
+};
+
+static int adm1026_read_value(struct i2c_client *client, u8 reg)
+{
+	int res;
+
+	if (reg < 0x80) {
+		/* "RAM" locations */
+		res = i2c_smbus_read_byte_data(client, reg) & 0xff;
+	} else {
+		/* EEPROM, do nothing */
+		res = 0;
+	}
+	return res;
+}
+
+static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
+{
+	int res;
+
+	if (reg < 0x80) {
+		/* "RAM" locations */
+		res = i2c_smbus_write_byte_data(client, reg, value);
+	} else {
+		/* EEPROM, do nothing */
+		res = 0;
+	}
+	return res;
+}
+
+static struct adm1026_data *adm1026_update_device(struct device *dev)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	int i;
+	long value, alarms, gpio;
+
+	mutex_lock(&data->update_lock);
+	if (!data->valid
+	    || time_after(jiffies,
+			  data->last_reading + ADM1026_DATA_INTERVAL)) {
+		/* Things that change quickly */
+		dev_dbg(&client->dev, "Reading sensor values\n");
+		for (i = 0; i <= 16; ++i) {
+			data->in[i] =
+			    adm1026_read_value(client, ADM1026_REG_IN[i]);
+		}
+
+		for (i = 0; i <= 7; ++i) {
+			data->fan[i] =
+			    adm1026_read_value(client, ADM1026_REG_FAN(i));
+		}
+
+		for (i = 0; i <= 2; ++i) {
+			/*
+			 * NOTE: temp[] is s8 and we assume 2's complement
+			 *   "conversion" in the assignment
+			 */
+			data->temp[i] =
+			    adm1026_read_value(client, ADM1026_REG_TEMP[i]);
+		}
+
+		data->pwm1.pwm = adm1026_read_value(client,
+			ADM1026_REG_PWM);
+		data->analog_out = adm1026_read_value(client,
+			ADM1026_REG_DAC);
+		/* GPIO16 is MSbit of alarms, move it to gpio */
+		alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
+		gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
+		alarms &= 0x7f;
+		alarms <<= 8;
+		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
+		alarms <<= 8;
+		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
+		alarms <<= 8;
+		alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
+		data->alarms = alarms;
+
+		/* Read the GPIO values */
+		gpio |= adm1026_read_value(client,
+			ADM1026_REG_GPIO_STATUS_8_15);
+		gpio <<= 8;
+		gpio |= adm1026_read_value(client,
+			ADM1026_REG_GPIO_STATUS_0_7);
+		data->gpio = gpio;
+
+		data->last_reading = jiffies;
+	}	/* last_reading */
+
+	if (!data->valid ||
+	    time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
+		/* Things that don't change often */
+		dev_dbg(&client->dev, "Reading config values\n");
+		for (i = 0; i <= 16; ++i) {
+			data->in_min[i] = adm1026_read_value(client,
+				ADM1026_REG_IN_MIN[i]);
+			data->in_max[i] = adm1026_read_value(client,
+				ADM1026_REG_IN_MAX[i]);
+		}
+
+		value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
+			| (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
+			<< 8);
+		for (i = 0; i <= 7; ++i) {
+			data->fan_min[i] = adm1026_read_value(client,
+				ADM1026_REG_FAN_MIN(i));
+			data->fan_div[i] = DIV_FROM_REG(value & 0x03);
+			value >>= 2;
+		}
+
+		for (i = 0; i <= 2; ++i) {
+			/*
+			 * NOTE: temp_xxx[] are s8 and we assume 2's
+			 *    complement "conversion" in the assignment
+			 */
+			data->temp_min[i] = adm1026_read_value(client,
+				ADM1026_REG_TEMP_MIN[i]);
+			data->temp_max[i] = adm1026_read_value(client,
+				ADM1026_REG_TEMP_MAX[i]);
+			data->temp_tmin[i] = adm1026_read_value(client,
+				ADM1026_REG_TEMP_TMIN[i]);
+			data->temp_crit[i] = adm1026_read_value(client,
+				ADM1026_REG_TEMP_THERM[i]);
+			data->temp_offset[i] = adm1026_read_value(client,
+				ADM1026_REG_TEMP_OFFSET[i]);
+		}
+
+		/* Read the STATUS/alarm masks */
+		alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
+		gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
+		alarms = (alarms & 0x7f) << 8;
+		alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
+		alarms <<= 8;
+		alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
+		alarms <<= 8;
+		alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
+		data->alarm_mask = alarms;
+
+		/* Read the GPIO values */
+		gpio |= adm1026_read_value(client,
+			ADM1026_REG_GPIO_MASK_8_15);
+		gpio <<= 8;
+		gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
+		data->gpio_mask = gpio;
+
+		/* Read various values from CONFIG1 */
+		data->config1 = adm1026_read_value(client,
+			ADM1026_REG_CONFIG1);
+		if (data->config1 & CFG1_PWM_AFC) {
+			data->pwm1.enable = 2;
+			data->pwm1.auto_pwm_min =
+				PWM_MIN_FROM_REG(data->pwm1.pwm);
+		}
+		/* Read the GPIO config */
+		data->config2 = adm1026_read_value(client,
+			ADM1026_REG_CONFIG2);
+		data->config3 = adm1026_read_value(client,
+			ADM1026_REG_CONFIG3);
+		data->gpio_config[16] = (data->config3 >> 6) & 0x03;
+
+		value = 0;
+		for (i = 0; i <= 15; ++i) {
+			if ((i & 0x03) == 0) {
+				value = adm1026_read_value(client,
+					    ADM1026_REG_GPIO_CFG_0_3 + i/4);
+			}
+			data->gpio_config[i] = value & 0x03;
+			value >>= 2;
+		}
+
+		data->last_config = jiffies;
+	}	/* last_config */
+
+	data->valid = true;
+	mutex_unlock(&data->update_lock);
+	return data;
+}
+
+static ssize_t in_show(struct device *dev, struct device_attribute *attr,
+		       char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
+}
+static ssize_t in_min_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
+}
+static ssize_t in_min_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->in_min[nr] = INS_TO_REG(nr, val);
+	adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+static ssize_t in_max_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
+}
+static ssize_t in_max_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->in_max[nr] = INS_TO_REG(nr, val);
+	adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0);
+static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0);
+static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0);
+static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1);
+static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
+static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
+static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2);
+static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
+static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
+static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3);
+static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
+static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
+static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4);
+static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
+static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
+static SENSOR_DEVICE_ATTR_RO(in5_input, in, 5);
+static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5);
+static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5);
+static SENSOR_DEVICE_ATTR_RO(in6_input, in, 6);
+static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6);
+static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6);
+static SENSOR_DEVICE_ATTR_RO(in7_input, in, 7);
+static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7);
+static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7);
+static SENSOR_DEVICE_ATTR_RO(in8_input, in, 8);
+static SENSOR_DEVICE_ATTR_RW(in8_min, in_min, 8);
+static SENSOR_DEVICE_ATTR_RW(in8_max, in_max, 8);
+static SENSOR_DEVICE_ATTR_RO(in9_input, in, 9);
+static SENSOR_DEVICE_ATTR_RW(in9_min, in_min, 9);
+static SENSOR_DEVICE_ATTR_RW(in9_max, in_max, 9);
+static SENSOR_DEVICE_ATTR_RO(in10_input, in, 10);
+static SENSOR_DEVICE_ATTR_RW(in10_min, in_min, 10);
+static SENSOR_DEVICE_ATTR_RW(in10_max, in_max, 10);
+static SENSOR_DEVICE_ATTR_RO(in11_input, in, 11);
+static SENSOR_DEVICE_ATTR_RW(in11_min, in_min, 11);
+static SENSOR_DEVICE_ATTR_RW(in11_max, in_max, 11);
+static SENSOR_DEVICE_ATTR_RO(in12_input, in, 12);
+static SENSOR_DEVICE_ATTR_RW(in12_min, in_min, 12);
+static SENSOR_DEVICE_ATTR_RW(in12_max, in_max, 12);
+static SENSOR_DEVICE_ATTR_RO(in13_input, in, 13);
+static SENSOR_DEVICE_ATTR_RW(in13_min, in_min, 13);
+static SENSOR_DEVICE_ATTR_RW(in13_max, in_max, 13);
+static SENSOR_DEVICE_ATTR_RO(in14_input, in, 14);
+static SENSOR_DEVICE_ATTR_RW(in14_min, in_min, 14);
+static SENSOR_DEVICE_ATTR_RW(in14_max, in_max, 14);
+static SENSOR_DEVICE_ATTR_RO(in15_input, in, 15);
+static SENSOR_DEVICE_ATTR_RW(in15_min, in_min, 15);
+static SENSOR_DEVICE_ATTR_RW(in15_max, in_max, 15);
+
+static ssize_t in16_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
+		NEG12_OFFSET);
+}
+static ssize_t in16_min_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
+		- NEG12_OFFSET);
+}
+static ssize_t in16_min_store(struct device *dev,
+			      struct device_attribute *attr, const char *buf,
+			      size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->in_min[16] = INS_TO_REG(16,
+				      clamp_val(val, INT_MIN,
+						INT_MAX - NEG12_OFFSET) +
+				      NEG12_OFFSET);
+	adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+static ssize_t in16_max_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
+			- NEG12_OFFSET);
+}
+static ssize_t in16_max_store(struct device *dev,
+			      struct device_attribute *attr, const char *buf,
+			      size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->in_max[16] = INS_TO_REG(16,
+				      clamp_val(val, INT_MIN,
+						INT_MAX - NEG12_OFFSET) +
+				      NEG12_OFFSET);
+	adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(in16_input, in16, 16);
+static SENSOR_DEVICE_ATTR_RW(in16_min, in16_min, 16);
+static SENSOR_DEVICE_ATTR_RW(in16_max, in16_max, 16);
+
+/* Now add fan read/write functions */
+
+static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
+		data->fan_div[nr]));
+}
+static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr,
+			    char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
+		data->fan_div[nr]));
+}
+static ssize_t fan_min_store(struct device *dev,
+			     struct device_attribute *attr, const char *buf,
+			     size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
+	adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
+		data->fan_min[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
+static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
+static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
+static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
+static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2);
+static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2);
+static SENSOR_DEVICE_ATTR_RO(fan4_input, fan, 3);
+static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3);
+static SENSOR_DEVICE_ATTR_RO(fan5_input, fan, 4);
+static SENSOR_DEVICE_ATTR_RW(fan5_min, fan_min, 4);
+static SENSOR_DEVICE_ATTR_RO(fan6_input, fan, 5);
+static SENSOR_DEVICE_ATTR_RW(fan6_min, fan_min, 5);
+static SENSOR_DEVICE_ATTR_RO(fan7_input, fan, 6);
+static SENSOR_DEVICE_ATTR_RW(fan7_min, fan_min, 6);
+static SENSOR_DEVICE_ATTR_RO(fan8_input, fan, 7);
+static SENSOR_DEVICE_ATTR_RW(fan8_min, fan_min, 7);
+
+/* Adjust fan_min to account for new fan divisor */
+static void fixup_fan_min(struct device *dev, int fan, int old_div)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	int new_min;
+	int new_div = data->fan_div[fan];
+
+	/* 0 and 0xff are special.  Don't adjust them */
+	if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff)
+		return;
+
+	new_min = data->fan_min[fan] * old_div / new_div;
+	new_min = clamp_val(new_min, 1, 254);
+	data->fan_min[fan] = new_min;
+	adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
+}
+
+/* Now add fan_div read/write functions */
+static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr,
+			    char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", data->fan_div[nr]);
+}
+static ssize_t fan_div_store(struct device *dev,
+			     struct device_attribute *attr, const char *buf,
+			     size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int orig_div, new_div;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	new_div = DIV_TO_REG(val);
+
+	mutex_lock(&data->update_lock);
+	orig_div = data->fan_div[nr];
+	data->fan_div[nr] = DIV_FROM_REG(new_div);
+
+	if (nr < 4) { /* 0 <= nr < 4 */
+		adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
+				    (DIV_TO_REG(data->fan_div[0]) << 0) |
+				    (DIV_TO_REG(data->fan_div[1]) << 2) |
+				    (DIV_TO_REG(data->fan_div[2]) << 4) |
+				    (DIV_TO_REG(data->fan_div[3]) << 6));
+	} else { /* 3 < nr < 8 */
+		adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
+				    (DIV_TO_REG(data->fan_div[4]) << 0) |
+				    (DIV_TO_REG(data->fan_div[5]) << 2) |
+				    (DIV_TO_REG(data->fan_div[6]) << 4) |
+				    (DIV_TO_REG(data->fan_div[7]) << 6));
+	}
+
+	if (data->fan_div[nr] != orig_div)
+		fixup_fan_min(dev, nr, orig_div);
+
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0);
+static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1);
+static SENSOR_DEVICE_ATTR_RW(fan3_div, fan_div, 2);
+static SENSOR_DEVICE_ATTR_RW(fan4_div, fan_div, 3);
+static SENSOR_DEVICE_ATTR_RW(fan5_div, fan_div, 4);
+static SENSOR_DEVICE_ATTR_RW(fan6_div, fan_div, 5);
+static SENSOR_DEVICE_ATTR_RW(fan7_div, fan_div, 6);
+static SENSOR_DEVICE_ATTR_RW(fan8_div, fan_div, 7);
+
+/* Temps */
+static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
+}
+static ssize_t temp_min_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
+}
+static ssize_t temp_min_store(struct device *dev,
+			      struct device_attribute *attr, const char *buf,
+			      size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->temp_min[nr] = TEMP_TO_REG(val);
+	adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
+		data->temp_min[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+static ssize_t temp_max_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
+}
+static ssize_t temp_max_store(struct device *dev,
+			      struct device_attribute *attr, const char *buf,
+			      size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->temp_max[nr] = TEMP_TO_REG(val);
+	adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
+		data->temp_max[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0);
+static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
+static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1);
+static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
+static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2);
+static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
+
+static ssize_t temp_offset_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
+}
+static ssize_t temp_offset_store(struct device *dev,
+				 struct device_attribute *attr,
+				 const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->temp_offset[nr] = TEMP_TO_REG(val);
+	adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
+		data->temp_offset[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(temp1_offset, temp_offset, 0);
+static SENSOR_DEVICE_ATTR_RW(temp2_offset, temp_offset, 1);
+static SENSOR_DEVICE_ATTR_RW(temp3_offset, temp_offset, 2);
+
+static ssize_t temp_auto_point1_temp_hyst_show(struct device *dev,
+					       struct device_attribute *attr,
+					       char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(
+		ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
+}
+static ssize_t temp_auto_point2_temp_show(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
+		ADM1026_FAN_CONTROL_TEMP_RANGE));
+}
+static ssize_t temp_auto_point1_temp_show(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
+}
+static ssize_t temp_auto_point1_temp_store(struct device *dev,
+					   struct device_attribute *attr,
+					   const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->temp_tmin[nr] = TEMP_TO_REG(val);
+	adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
+		data->temp_tmin[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(temp1_auto_point1_temp, temp_auto_point1_temp, 0);
+static SENSOR_DEVICE_ATTR_RO(temp1_auto_point1_temp_hyst,
+			     temp_auto_point1_temp_hyst, 0);
+static SENSOR_DEVICE_ATTR_RO(temp1_auto_point2_temp, temp_auto_point2_temp, 0);
+static SENSOR_DEVICE_ATTR_RW(temp2_auto_point1_temp, temp_auto_point1_temp, 1);
+static SENSOR_DEVICE_ATTR_RO(temp2_auto_point1_temp_hyst,
+			     temp_auto_point1_temp_hyst, 1);
+static SENSOR_DEVICE_ATTR_RO(temp2_auto_point2_temp, temp_auto_point2_temp, 1);
+static SENSOR_DEVICE_ATTR_RW(temp3_auto_point1_temp, temp_auto_point1_temp, 2);
+static SENSOR_DEVICE_ATTR_RO(temp3_auto_point1_temp_hyst,
+			     temp_auto_point1_temp_hyst, 2);
+static SENSOR_DEVICE_ATTR_RO(temp3_auto_point2_temp, temp_auto_point2_temp, 2);
+
+static ssize_t show_temp_crit_enable(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
+}
+static ssize_t set_temp_crit_enable(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
+
+	if (val > 1)
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
+	adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static DEVICE_ATTR(temp1_crit_enable, 0644, show_temp_crit_enable,
+		   set_temp_crit_enable);
+static DEVICE_ATTR(temp2_crit_enable, 0644, show_temp_crit_enable,
+		   set_temp_crit_enable);
+static DEVICE_ATTR(temp3_crit_enable, 0644, show_temp_crit_enable,
+		   set_temp_crit_enable);
+
+static ssize_t temp_crit_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
+}
+static ssize_t temp_crit_store(struct device *dev,
+			       struct device_attribute *attr, const char *buf,
+			       size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->temp_crit[nr] = TEMP_TO_REG(val);
+	adm1026_write_value(client, ADM1026_REG_TEMP_THERM[nr],
+		data->temp_crit[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp_crit, 0);
+static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp_crit, 1);
+static SENSOR_DEVICE_ATTR_RW(temp3_crit, temp_crit, 2);
+
+static ssize_t analog_out_show(struct device *dev,
+			       struct device_attribute *attr, char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", DAC_FROM_REG(data->analog_out));
+}
+static ssize_t analog_out_store(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->analog_out = DAC_TO_REG(val);
+	adm1026_write_value(client, ADM1026_REG_DAC, data->analog_out);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static DEVICE_ATTR_RW(analog_out);
+
+static ssize_t cpu0_vid_show(struct device *dev,
+			     struct device_attribute *attr, char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	int vid = (data->gpio >> 11) & 0x1f;
+
+	dev_dbg(dev, "Setting VID from GPIO11-15.\n");
+	return sprintf(buf, "%d\n", vid_from_reg(vid, data->vrm));
+}
+
+static DEVICE_ATTR_RO(cpu0_vid);
+
+static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
+			char *buf)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	return sprintf(buf, "%d\n", data->vrm);
+}
+
+static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
+			 const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
+
+	if (val > 255)
+		return -EINVAL;
+
+	data->vrm = val;
+	return count;
+}
+
+static DEVICE_ATTR_RW(vrm);
+
+static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%ld\n", data->alarms);
+}
+
+static DEVICE_ATTR_RO(alarms);
+
+static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
+			  char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	int bitnr = to_sensor_dev_attr(attr)->index;
+	return sprintf(buf, "%ld\n", (data->alarms >> bitnr) & 1);
+}
+
+static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 0);
+static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 1);
+static SENSOR_DEVICE_ATTR_RO(in9_alarm, alarm, 1);
+static SENSOR_DEVICE_ATTR_RO(in11_alarm, alarm, 2);
+static SENSOR_DEVICE_ATTR_RO(in12_alarm, alarm, 3);
+static SENSOR_DEVICE_ATTR_RO(in13_alarm, alarm, 4);
+static SENSOR_DEVICE_ATTR_RO(in14_alarm, alarm, 5);
+static SENSOR_DEVICE_ATTR_RO(in15_alarm, alarm, 6);
+static SENSOR_DEVICE_ATTR_RO(in16_alarm, alarm, 7);
+static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 8);
+static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 9);
+static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 10);
+static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 11);
+static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 12);
+static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 13);
+static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 14);
+static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 15);
+static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 16);
+static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 17);
+static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, 18);
+static SENSOR_DEVICE_ATTR_RO(fan4_alarm, alarm, 19);
+static SENSOR_DEVICE_ATTR_RO(fan5_alarm, alarm, 20);
+static SENSOR_DEVICE_ATTR_RO(fan6_alarm, alarm, 21);
+static SENSOR_DEVICE_ATTR_RO(fan7_alarm, alarm, 22);
+static SENSOR_DEVICE_ATTR_RO(fan8_alarm, alarm, 23);
+static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 24);
+static SENSOR_DEVICE_ATTR_RO(in10_alarm, alarm, 25);
+static SENSOR_DEVICE_ATTR_RO(in8_alarm, alarm, 26);
+
+static ssize_t alarm_mask_show(struct device *dev,
+			       struct device_attribute *attr, char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%ld\n", data->alarm_mask);
+}
+static ssize_t alarm_mask_store(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	unsigned long mask;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->alarm_mask = val & 0x7fffffff;
+	mask = data->alarm_mask
+		| (data->gpio_mask & 0x10000 ? 0x80000000 : 0);
+	adm1026_write_value(client, ADM1026_REG_MASK1,
+		mask & 0xff);
+	mask >>= 8;
+	adm1026_write_value(client, ADM1026_REG_MASK2,
+		mask & 0xff);
+	mask >>= 8;
+	adm1026_write_value(client, ADM1026_REG_MASK3,
+		mask & 0xff);
+	mask >>= 8;
+	adm1026_write_value(client, ADM1026_REG_MASK4,
+		mask & 0xff);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static DEVICE_ATTR_RW(alarm_mask);
+
+static ssize_t gpio_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%ld\n", data->gpio);
+}
+static ssize_t gpio_store(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long gpio;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->gpio = val & 0x1ffff;
+	gpio = data->gpio;
+	adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_0_7, gpio & 0xff);
+	gpio >>= 8;
+	adm1026_write_value(client, ADM1026_REG_GPIO_STATUS_8_15, gpio & 0xff);
+	gpio = ((gpio >> 1) & 0x80) | (data->alarms >> 24 & 0x7f);
+	adm1026_write_value(client, ADM1026_REG_STATUS4, gpio & 0xff);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static DEVICE_ATTR_RW(gpio);
+
+static ssize_t gpio_mask_show(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%ld\n", data->gpio_mask);
+}
+static ssize_t gpio_mask_store(struct device *dev,
+			       struct device_attribute *attr, const char *buf,
+			       size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	long mask;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->gpio_mask = val & 0x1ffff;
+	mask = data->gpio_mask;
+	adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7, mask & 0xff);
+	mask >>= 8;
+	adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15, mask & 0xff);
+	mask = ((mask >> 1) & 0x80) | (data->alarm_mask >> 24 & 0x7f);
+	adm1026_write_value(client, ADM1026_REG_MASK1, mask & 0xff);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static DEVICE_ATTR_RW(gpio_mask);
+
+static ssize_t pwm1_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm1.pwm));
+}
+
+static ssize_t pwm1_store(struct device *dev, struct device_attribute *attr,
+			  const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+
+	if (data->pwm1.enable == 1) {
+		long val;
+		int err;
+
+		err = kstrtol(buf, 10, &val);
+		if (err)
+			return err;
+
+		mutex_lock(&data->update_lock);
+		data->pwm1.pwm = PWM_TO_REG(val);
+		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
+		mutex_unlock(&data->update_lock);
+	}
+	return count;
+}
+
+static ssize_t temp1_auto_point1_pwm_show(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", data->pwm1.auto_pwm_min);
+}
+
+static ssize_t temp1_auto_point1_pwm_store(struct device *dev,
+					   struct device_attribute *attr,
+					   const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
+
+	mutex_lock(&data->update_lock);
+	data->pwm1.auto_pwm_min = clamp_val(val, 0, 255);
+	if (data->pwm1.enable == 2) { /* apply immediately */
+		data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
+			PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
+		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
+	}
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t temp1_auto_point2_pwm_show(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	return sprintf(buf, "%d\n", ADM1026_PWM_MAX);
+}
+
+static ssize_t pwm1_enable_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct adm1026_data *data = adm1026_update_device(dev);
+	return sprintf(buf, "%d\n", data->pwm1.enable);
+}
+
+static ssize_t pwm1_enable_store(struct device *dev,
+				 struct device_attribute *attr,
+				 const char *buf, size_t count)
+{
+	struct adm1026_data *data = dev_get_drvdata(dev);
+	struct i2c_client *client = data->client;
+	int old_enable;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
+
+	if (val >= 3)
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	old_enable = data->pwm1.enable;
+	data->pwm1.enable = val;
+	data->config1 = (data->config1 & ~CFG1_PWM_AFC)
+			| ((val == 2) ? CFG1_PWM_AFC : 0);
+	adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
+	if (val == 2) { /* apply pwm1_auto_pwm_min to pwm1 */
+		data->pwm1.pwm = PWM_TO_REG((data->pwm1.pwm & 0x0f) |
+			PWM_MIN_TO_REG(data->pwm1.auto_pwm_min));
+		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
+	} else if (!((old_enable == 1) && (val == 1))) {
+		/* set pwm to safe value */
+		data->pwm1.pwm = 255;
+		adm1026_write_value(client, ADM1026_REG_PWM, data->pwm1.pwm);
+	}
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+/* enable PWM fan control */
+static DEVICE_ATTR_RW(pwm1);
+static DEVICE_ATTR(pwm2, 0644, pwm1_show, pwm1_store);
+static DEVICE_ATTR(pwm3, 0644, pwm1_show, pwm1_store);
+static DEVICE_ATTR_RW(pwm1_enable);
+static DEVICE_ATTR(pwm2_enable, 0644, pwm1_enable_show,
+		   pwm1_enable_store);
+static DEVICE_ATTR(pwm3_enable, 0644, pwm1_enable_show,
+		   pwm1_enable_store);
+static DEVICE_ATTR_RW(temp1_auto_point1_pwm);
+static DEVICE_ATTR(temp2_auto_point1_pwm, 0644,
+		   temp1_auto_point1_pwm_show, temp1_auto_point1_pwm_store);
+static DEVICE_ATTR(temp3_auto_point1_pwm, 0644,
+		   temp1_auto_point1_pwm_show, temp1_auto_point1_pwm_store);
+
+static DEVICE_ATTR_RO(temp1_auto_point2_pwm);
+static DEVICE_ATTR(temp2_auto_point2_pwm, 0444, temp1_auto_point2_pwm_show,
+		   NULL);
+static DEVICE_ATTR(temp3_auto_point2_pwm, 0444, temp1_auto_point2_pwm_show,
+		   NULL);
+
+static struct attribute *adm1026_attributes[] = {
+	&sensor_dev_attr_in0_input.dev_attr.attr,
+	&sensor_dev_attr_in0_max.dev_attr.attr,
+	&sensor_dev_attr_in0_min.dev_attr.attr,
+	&sensor_dev_attr_in0_alarm.dev_attr.attr,
+	&sensor_dev_attr_in1_input.dev_attr.attr,
+	&sensor_dev_attr_in1_max.dev_attr.attr,
+	&sensor_dev_attr_in1_min.dev_attr.attr,
+	&sensor_dev_attr_in1_alarm.dev_attr.attr,
+	&sensor_dev_attr_in2_input.dev_attr.attr,
+	&sensor_dev_attr_in2_max.dev_attr.attr,
+	&sensor_dev_attr_in2_min.dev_attr.attr,
+	&sensor_dev_attr_in2_alarm.dev_attr.attr,
+	&sensor_dev_attr_in3_input.dev_attr.attr,
+	&sensor_dev_attr_in3_max.dev_attr.attr,
+	&sensor_dev_attr_in3_min.dev_attr.attr,
+	&sensor_dev_attr_in3_alarm.dev_attr.attr,
+	&sensor_dev_attr_in4_input.dev_attr.attr,
+	&sensor_dev_attr_in4_max.dev_attr.attr,
+	&sensor_dev_attr_in4_min.dev_attr.attr,
+	&sensor_dev_attr_in4_alarm.dev_attr.attr,
+	&sensor_dev_attr_in5_input.dev_attr.attr,
+	&sensor_dev_attr_in5_max.dev_attr.attr,
+	&sensor_dev_attr_in5_min.dev_attr.attr,
+	&sensor_dev_attr_in5_alarm.dev_attr.attr,
+	&sensor_dev_attr_in6_input.dev_attr.attr,
+	&sensor_dev_attr_in6_max.dev_attr.attr,
+	&sensor_dev_attr_in6_min.dev_attr.attr,
+	&sensor_dev_attr_in6_alarm.dev_attr.attr,
+	&sensor_dev_attr_in7_input.dev_attr.attr,
+	&sensor_dev_attr_in7_max.dev_attr.attr,
+	&sensor_dev_attr_in7_min.dev_attr.attr,
+	&sensor_dev_attr_in7_alarm.dev_attr.attr,
+	&sensor_dev_attr_in10_input.dev_attr.attr,
+	&sensor_dev_attr_in10_max.dev_attr.attr,
+	&sensor_dev_attr_in10_min.dev_attr.attr,
+	&sensor_dev_attr_in10_alarm.dev_attr.attr,
+	&sensor_dev_attr_in11_input.dev_attr.attr,
+	&sensor_dev_attr_in11_max.dev_attr.attr,
+	&sensor_dev_attr_in11_min.dev_attr.attr,
+	&sensor_dev_attr_in11_alarm.dev_attr.attr,
+	&sensor_dev_attr_in12_input.dev_attr.attr,
+	&sensor_dev_attr_in12_max.dev_attr.attr,
+	&sensor_dev_attr_in12_min.dev_attr.attr,
+	&sensor_dev_attr_in12_alarm.dev_attr.attr,
+	&sensor_dev_attr_in13_input.dev_attr.attr,
+	&sensor_dev_attr_in13_max.dev_attr.attr,
+	&sensor_dev_attr_in13_min.dev_attr.attr,
+	&sensor_dev_attr_in13_alarm.dev_attr.attr,
+	&sensor_dev_attr_in14_input.dev_attr.attr,
+	&sensor_dev_attr_in14_max.dev_attr.attr,
+	&sensor_dev_attr_in14_min.dev_attr.attr,
+	&sensor_dev_attr_in14_alarm.dev_attr.attr,
+	&sensor_dev_attr_in15_input.dev_attr.attr,
+	&sensor_dev_attr_in15_max.dev_attr.attr,
+	&sensor_dev_attr_in15_min.dev_attr.attr,
+	&sensor_dev_attr_in15_alarm.dev_attr.attr,
+	&sensor_dev_attr_in16_input.dev_attr.attr,
+	&sensor_dev_attr_in16_max.dev_attr.attr,
+	&sensor_dev_attr_in16_min.dev_attr.attr,
+	&sensor_dev_attr_in16_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan1_input.dev_attr.attr,
+	&sensor_dev_attr_fan1_div.dev_attr.attr,
+	&sensor_dev_attr_fan1_min.dev_attr.attr,
+	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan2_input.dev_attr.attr,
+	&sensor_dev_attr_fan2_div.dev_attr.attr,
+	&sensor_dev_attr_fan2_min.dev_attr.attr,
+	&sensor_dev_attr_fan2_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan3_input.dev_attr.attr,
+	&sensor_dev_attr_fan3_div.dev_attr.attr,
+	&sensor_dev_attr_fan3_min.dev_attr.attr,
+	&sensor_dev_attr_fan3_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan4_input.dev_attr.attr,
+	&sensor_dev_attr_fan4_div.dev_attr.attr,
+	&sensor_dev_attr_fan4_min.dev_attr.attr,
+	&sensor_dev_attr_fan4_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan5_input.dev_attr.attr,
+	&sensor_dev_attr_fan5_div.dev_attr.attr,
+	&sensor_dev_attr_fan5_min.dev_attr.attr,
+	&sensor_dev_attr_fan5_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan6_input.dev_attr.attr,
+	&sensor_dev_attr_fan6_div.dev_attr.attr,
+	&sensor_dev_attr_fan6_min.dev_attr.attr,
+	&sensor_dev_attr_fan6_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan7_input.dev_attr.attr,
+	&sensor_dev_attr_fan7_div.dev_attr.attr,
+	&sensor_dev_attr_fan7_min.dev_attr.attr,
+	&sensor_dev_attr_fan7_alarm.dev_attr.attr,
+	&sensor_dev_attr_fan8_input.dev_attr.attr,
+	&sensor_dev_attr_fan8_div.dev_attr.attr,
+	&sensor_dev_attr_fan8_min.dev_attr.attr,
+	&sensor_dev_attr_fan8_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_min.dev_attr.attr,
+	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_min.dev_attr.attr,
+	&sensor_dev_attr_temp2_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_offset.dev_attr.attr,
+	&sensor_dev_attr_temp2_offset.dev_attr.attr,
+	&sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
+	&sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
+	&sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp2_auto_point1_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
+	&sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit.dev_attr.attr,
+	&dev_attr_temp1_crit_enable.attr,
+	&dev_attr_temp2_crit_enable.attr,
+	&dev_attr_cpu0_vid.attr,
+	&dev_attr_vrm.attr,
+	&dev_attr_alarms.attr,
+	&dev_attr_alarm_mask.attr,
+	&dev_attr_gpio.attr,
+	&dev_attr_gpio_mask.attr,
+	&dev_attr_pwm1.attr,
+	&dev_attr_pwm2.attr,
+	&dev_attr_pwm3.attr,
+	&dev_attr_pwm1_enable.attr,
+	&dev_attr_pwm2_enable.attr,
+	&dev_attr_pwm3_enable.attr,
+	&dev_attr_temp1_auto_point1_pwm.attr,
+	&dev_attr_temp2_auto_point1_pwm.attr,
+	&dev_attr_temp1_auto_point2_pwm.attr,
+	&dev_attr_temp2_auto_point2_pwm.attr,
+	&dev_attr_analog_out.attr,
+	NULL
+};
+
+static const struct attribute_group adm1026_group = {
+	.attrs = adm1026_attributes,
+};
+
+static struct attribute *adm1026_attributes_temp3[] = {
+	&sensor_dev_attr_temp3_input.dev_attr.attr,
+	&sensor_dev_attr_temp3_max.dev_attr.attr,
+	&sensor_dev_attr_temp3_min.dev_attr.attr,
+	&sensor_dev_attr_temp3_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp3_offset.dev_attr.attr,
+	&sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
+	&sensor_dev_attr_temp3_auto_point1_temp_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
+	&sensor_dev_attr_temp3_crit.dev_attr.attr,
+	&dev_attr_temp3_crit_enable.attr,
+	&dev_attr_temp3_auto_point1_pwm.attr,
+	&dev_attr_temp3_auto_point2_pwm.attr,
+	NULL
+};
+
+static const struct attribute_group adm1026_group_temp3 = {
+	.attrs = adm1026_attributes_temp3,
+};
+
+static struct attribute *adm1026_attributes_in8_9[] = {
+	&sensor_dev_attr_in8_input.dev_attr.attr,
+	&sensor_dev_attr_in8_max.dev_attr.attr,
+	&sensor_dev_attr_in8_min.dev_attr.attr,
+	&sensor_dev_attr_in8_alarm.dev_attr.attr,
+	&sensor_dev_attr_in9_input.dev_attr.attr,
+	&sensor_dev_attr_in9_max.dev_attr.attr,
+	&sensor_dev_attr_in9_min.dev_attr.attr,
+	&sensor_dev_attr_in9_alarm.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group adm1026_group_in8_9 = {
+	.attrs = adm1026_attributes_in8_9,
+};
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int adm1026_detect(struct i2c_client *client,
+			  struct i2c_board_info *info)
+{
+	struct i2c_adapter *adapter = client->adapter;
+	int address = client->addr;
+	int company, verstep;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+		/* We need to be able to do byte I/O */
+		return -ENODEV;
+	}
+
+	/* Now, we do the remaining detection. */
+
+	company = adm1026_read_value(client, ADM1026_REG_COMPANY);
+	verstep = adm1026_read_value(client, ADM1026_REG_VERSTEP);
+
+	dev_dbg(&adapter->dev,
+		"Detecting device at %d,0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
+		i2c_adapter_id(client->adapter), client->addr,
+		company, verstep);
+
+	/* Determine the chip type. */
+	dev_dbg(&adapter->dev, "Autodetecting device at %d,0x%02x...\n",
+		i2c_adapter_id(adapter), address);
+	if (company == ADM1026_COMPANY_ANALOG_DEV
+	    && verstep == ADM1026_VERSTEP_ADM1026) {
+		/* Analog Devices ADM1026 */
+	} else if (company == ADM1026_COMPANY_ANALOG_DEV
+		&& (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
+		dev_err(&adapter->dev,
+			"Unrecognized stepping 0x%02x. Defaulting to ADM1026.\n",
+			verstep);
+	} else if ((verstep & 0xf0) == ADM1026_VERSTEP_GENERIC) {
+		dev_err(&adapter->dev,
+			"Found version/stepping 0x%02x. Assuming generic ADM1026.\n",
+			verstep);
+	} else {
+		dev_dbg(&adapter->dev, "Autodetection failed\n");
+		/* Not an ADM1026... */
+		return -ENODEV;
+	}
+
+	strscpy(info->type, "adm1026", I2C_NAME_SIZE);
+
+	return 0;
+}
+
+static void adm1026_print_gpio(struct i2c_client *client)
+{
+	struct adm1026_data *data = i2c_get_clientdata(client);
+	int i;
+
+	dev_dbg(&client->dev, "GPIO config is:\n");
+	for (i = 0; i <= 7; ++i) {
+		if (data->config2 & (1 << i)) {
+			dev_dbg(&client->dev, "\t%sGP%s%d\n",
+				data->gpio_config[i] & 0x02 ? "" : "!",
+				data->gpio_config[i] & 0x01 ? "OUT" : "IN",
+				i);
+		} else {
+			dev_dbg(&client->dev, "\tFAN%d\n", i);
+		}
+	}
+	for (i = 8; i <= 15; ++i) {
+		dev_dbg(&client->dev, "\t%sGP%s%d\n",
+			data->gpio_config[i] & 0x02 ? "" : "!",
+			data->gpio_config[i] & 0x01 ? "OUT" : "IN",
+			i);
+	}
+	if (data->config3 & CFG3_GPIO16_ENABLE) {
+		dev_dbg(&client->dev, "\t%sGP%s16\n",
+			data->gpio_config[16] & 0x02 ? "" : "!",
+			data->gpio_config[16] & 0x01 ? "OUT" : "IN");
+	} else {
+		/* GPIO16 is THERM */
+		dev_dbg(&client->dev, "\tTHERM\n");
+	}
+}
+
+static void adm1026_fixup_gpio(struct i2c_client *client)
+{
+	struct adm1026_data *data = i2c_get_clientdata(client);
+	int i;
+	int value;
+
+	/* Make the changes requested. */
+	/*
+	 * We may need to unlock/stop monitoring or soft-reset the
+	 *    chip before we can make changes.  This hasn't been
+	 *    tested much.  FIXME
+	 */
+
+	/* Make outputs */
+	for (i = 0; i <= 16; ++i) {
+		if (gpio_output[i] >= 0 && gpio_output[i] <= 16)
+			data->gpio_config[gpio_output[i]] |= 0x01;
+		/* if GPIO0-7 is output, it isn't a FAN tach */
+		if (gpio_output[i] >= 0 && gpio_output[i] <= 7)
+			data->config2 |= 1 << gpio_output[i];
+	}
+
+	/* Input overrides output */
+	for (i = 0; i <= 16; ++i) {
+		if (gpio_input[i] >= 0 && gpio_input[i] <= 16)
+			data->gpio_config[gpio_input[i]] &= ~0x01;
+		/* if GPIO0-7 is input, it isn't a FAN tach */
+		if (gpio_input[i] >= 0 && gpio_input[i] <= 7)
+			data->config2 |= 1 << gpio_input[i];
+	}
+
+	/* Inverted */
+	for (i = 0; i <= 16; ++i) {
+		if (gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16)
+			data->gpio_config[gpio_inverted[i]] &= ~0x02;
+	}
+
+	/* Normal overrides inverted */
+	for (i = 0; i <= 16; ++i) {
+		if (gpio_normal[i] >= 0 && gpio_normal[i] <= 16)
+			data->gpio_config[gpio_normal[i]] |= 0x02;
+	}
+
+	/* Fan overrides input and output */
+	for (i = 0; i <= 7; ++i) {
+		if (gpio_fan[i] >= 0 && gpio_fan[i] <= 7)
+			data->config2 &= ~(1 << gpio_fan[i]);
+	}
+
+	/* Write new configs to registers */
+	adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
+	data->config3 = (data->config3 & 0x3f)
+			| ((data->gpio_config[16] & 0x03) << 6);
+	adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
+	for (i = 15, value = 0; i >= 0; --i) {
+		value <<= 2;
+		value |= data->gpio_config[i] & 0x03;
+		if ((i & 0x03) == 0) {
+			adm1026_write_value(client,
+					ADM1026_REG_GPIO_CFG_0_3 + i/4,
+					value);
+			value = 0;
+		}
+	}
+
+	/* Print the new config */
+	adm1026_print_gpio(client);
+}
+
+static void adm1026_init_client(struct i2c_client *client)
+{
+	int value, i;
+	struct adm1026_data *data = i2c_get_clientdata(client);
+
+	dev_dbg(&client->dev, "Initializing device\n");
+	/* Read chip config */
+	data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
+	data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
+	data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
+
+	/* Inform user of chip config */
+	dev_dbg(&client->dev, "ADM1026_REG_CONFIG1 is: 0x%02x\n",
+		data->config1);
+	if ((data->config1 & CFG1_MONITOR) == 0) {
+		dev_dbg(&client->dev,
+			"Monitoring not currently enabled.\n");
+	}
+	if (data->config1 & CFG1_INT_ENABLE) {
+		dev_dbg(&client->dev,
+			"SMBALERT interrupts are enabled.\n");
+	}
+	if (data->config1 & CFG1_AIN8_9) {
+		dev_dbg(&client->dev,
+			"in8 and in9 enabled. temp3 disabled.\n");
+	} else {
+		dev_dbg(&client->dev,
+			"temp3 enabled.  in8 and in9 disabled.\n");
+	}
+	if (data->config1 & CFG1_THERM_HOT) {
+		dev_dbg(&client->dev,
+			"Automatic THERM, PWM, and temp limits enabled.\n");
+	}
+
+	if (data->config3 & CFG3_GPIO16_ENABLE) {
+		dev_dbg(&client->dev,
+			"GPIO16 enabled.  THERM pin disabled.\n");
+	} else {
+		dev_dbg(&client->dev,
+			"THERM pin enabled.  GPIO16 disabled.\n");
+	}
+	if (data->config3 & CFG3_VREF_250)
+		dev_dbg(&client->dev, "Vref is 2.50 Volts.\n");
+	else
+		dev_dbg(&client->dev, "Vref is 1.82 Volts.\n");
+	/* Read and pick apart the existing GPIO configuration */
+	value = 0;
+	for (i = 0; i <= 15; ++i) {
+		if ((i & 0x03) == 0) {
+			value = adm1026_read_value(client,
+					ADM1026_REG_GPIO_CFG_0_3 + i / 4);
+		}
+		data->gpio_config[i] = value & 0x03;
+		value >>= 2;
+	}
+	data->gpio_config[16] = (data->config3 >> 6) & 0x03;
+
+	/* ... and then print it */
+	adm1026_print_gpio(client);
+
+	/*
+	 * If the user asks us to reprogram the GPIO config, then
+	 * do it now.
+	 */
+	if (gpio_input[0] != -1 || gpio_output[0] != -1
+		|| gpio_inverted[0] != -1 || gpio_normal[0] != -1
+		|| gpio_fan[0] != -1) {
+		adm1026_fixup_gpio(client);
+	}
+
+	/*
+	 * WE INTENTIONALLY make no changes to the limits,
+	 *   offsets, pwms, fans and zones.  If they were
+	 *   configured, we don't want to mess with them.
+	 *   If they weren't, the default is 100% PWM, no
+	 *   control and will suffice until 'sensors -s'
+	 *   can be run by the user.  We DO set the default
+	 *   value for pwm1.auto_pwm_min to its maximum
+	 *   so that enabling automatic pwm fan control
+	 *   without first setting a value for pwm1.auto_pwm_min
+	 *   will not result in potentially dangerous fan speed decrease.
+	 */
+	data->pwm1.auto_pwm_min = 255;
+	/* Start monitoring */
+	value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
+	/* Set MONITOR, clear interrupt acknowledge and s/w reset */
+	value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET);
+	dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value);
+	data->config1 = value;
+	adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
+
+	/* initialize fan_div[] to hardware defaults */
+	value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3) |
+		(adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
+	for (i = 0; i <= 7; ++i) {
+		data->fan_div[i] = DIV_FROM_REG(value & 0x03);
+		value >>= 2;
+	}
+}
+
+static int adm1026_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct device *hwmon_dev;
+	struct adm1026_data *data;
+
+	data = devm_kzalloc(dev, sizeof(struct adm1026_data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, data);
+	data->client = client;
+	mutex_init(&data->update_lock);
+
+	/* Set the VRM version */
+	data->vrm = vid_which_vrm();
+
+	/* Initialize the ADM1026 chip */
+	adm1026_init_client(client);
+
+	/* sysfs hooks */
+	data->groups[0] = &adm1026_group;
+	if (data->config1 & CFG1_AIN8_9)
+		data->groups[1] = &adm1026_group_in8_9;
+	else
+		data->groups[1] = &adm1026_group_temp3;
+
+	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+							   data, data->groups);
+	return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id adm1026_id[] = {
+	{ "adm1026", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, adm1026_id);
+
+static struct i2c_driver adm1026_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver = {
+		.name	= "adm1026",
+	},
+	.probe		= adm1026_probe,
+	.id_table	= adm1026_id,
+	.detect		= adm1026_detect,
+	.address_list	= normal_i2c,
+};
+
+module_i2c_driver(adm1026_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
+	      "Justin Thiessen <jthiessen@penguincomputing.com>");
+MODULE_DESCRIPTION("ADM1026 driver");