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1082 lines
32 KiB
1082 lines
32 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* adm1031.c - Part of lm_sensors, Linux kernel modules for hardware |
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* monitoring |
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* Based on lm75.c and lm85.c |
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* Supports adm1030 / adm1031 |
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* Copyright (C) 2004 Alexandre d'Alton <[email protected]> |
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* Reworked by Jean Delvare <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/jiffies.h> |
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#include <linux/i2c.h> |
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#include <linux/hwmon.h> |
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#include <linux/hwmon-sysfs.h> |
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#include <linux/err.h> |
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#include <linux/mutex.h> |
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/* Following macros takes channel parameter starting from 0 to 2 */ |
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#define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr)) |
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#define ADM1031_REG_FAN_DIV(nr) (0x20 + (nr)) |
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#define ADM1031_REG_PWM (0x22) |
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#define ADM1031_REG_FAN_MIN(nr) (0x10 + (nr)) |
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#define ADM1031_REG_FAN_FILTER (0x23) |
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#define ADM1031_REG_TEMP_OFFSET(nr) (0x0d + (nr)) |
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#define ADM1031_REG_TEMP_MAX(nr) (0x14 + 4 * (nr)) |
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#define ADM1031_REG_TEMP_MIN(nr) (0x15 + 4 * (nr)) |
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#define ADM1031_REG_TEMP_CRIT(nr) (0x16 + 4 * (nr)) |
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#define ADM1031_REG_TEMP(nr) (0x0a + (nr)) |
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#define ADM1031_REG_AUTO_TEMP(nr) (0x24 + (nr)) |
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#define ADM1031_REG_STATUS(nr) (0x2 + (nr)) |
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#define ADM1031_REG_CONF1 0x00 |
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#define ADM1031_REG_CONF2 0x01 |
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#define ADM1031_REG_EXT_TEMP 0x06 |
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#define ADM1031_CONF1_MONITOR_ENABLE 0x01 /* Monitoring enable */ |
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#define ADM1031_CONF1_PWM_INVERT 0x08 /* PWM Invert */ |
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#define ADM1031_CONF1_AUTO_MODE 0x80 /* Auto FAN */ |
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#define ADM1031_CONF2_PWM1_ENABLE 0x01 |
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#define ADM1031_CONF2_PWM2_ENABLE 0x02 |
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#define ADM1031_CONF2_TACH1_ENABLE 0x04 |
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#define ADM1031_CONF2_TACH2_ENABLE 0x08 |
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#define ADM1031_CONF2_TEMP_ENABLE(chan) (0x10 << (chan)) |
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#define ADM1031_UPDATE_RATE_MASK 0x1c |
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#define ADM1031_UPDATE_RATE_SHIFT 2 |
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/* Addresses to scan */ |
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static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
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enum chips { adm1030, adm1031 }; |
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typedef u8 auto_chan_table_t[8][2]; |
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/* Each client has this additional data */ |
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struct adm1031_data { |
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struct i2c_client *client; |
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const struct attribute_group *groups[3]; |
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struct mutex update_lock; |
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int chip_type; |
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char valid; /* !=0 if following fields are valid */ |
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unsigned long last_updated; /* In jiffies */ |
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unsigned int update_interval; /* In milliseconds */ |
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/* |
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* The chan_select_table contains the possible configurations for |
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* auto fan control. |
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*/ |
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const auto_chan_table_t *chan_select_table; |
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u16 alarm; |
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u8 conf1; |
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u8 conf2; |
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u8 fan[2]; |
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u8 fan_div[2]; |
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u8 fan_min[2]; |
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u8 pwm[2]; |
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u8 old_pwm[2]; |
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s8 temp[3]; |
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u8 ext_temp[3]; |
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u8 auto_temp[3]; |
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u8 auto_temp_min[3]; |
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u8 auto_temp_off[3]; |
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u8 auto_temp_max[3]; |
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s8 temp_offset[3]; |
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s8 temp_min[3]; |
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s8 temp_max[3]; |
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s8 temp_crit[3]; |
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}; |
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static inline u8 adm1031_read_value(struct i2c_client *client, u8 reg) |
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{ |
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return i2c_smbus_read_byte_data(client, reg); |
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} |
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static inline int |
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adm1031_write_value(struct i2c_client *client, u8 reg, unsigned int value) |
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{ |
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return i2c_smbus_write_byte_data(client, reg, value); |
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} |
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static struct adm1031_data *adm1031_update_device(struct device *dev) |
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{ |
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struct adm1031_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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unsigned long next_update; |
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int chan; |
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mutex_lock(&data->update_lock); |
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next_update = data->last_updated |
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+ msecs_to_jiffies(data->update_interval); |
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if (time_after(jiffies, next_update) || !data->valid) { |
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dev_dbg(&client->dev, "Starting adm1031 update\n"); |
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for (chan = 0; |
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chan < ((data->chip_type == adm1031) ? 3 : 2); chan++) { |
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u8 oldh, newh; |
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oldh = |
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adm1031_read_value(client, ADM1031_REG_TEMP(chan)); |
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data->ext_temp[chan] = |
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adm1031_read_value(client, ADM1031_REG_EXT_TEMP); |
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newh = |
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adm1031_read_value(client, ADM1031_REG_TEMP(chan)); |
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if (newh != oldh) { |
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data->ext_temp[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_EXT_TEMP); |
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#ifdef DEBUG |
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oldh = |
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adm1031_read_value(client, |
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ADM1031_REG_TEMP(chan)); |
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/* oldh is actually newer */ |
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if (newh != oldh) |
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dev_warn(&client->dev, |
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"Remote temperature may be wrong.\n"); |
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#endif |
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} |
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data->temp[chan] = newh; |
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data->temp_offset[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_TEMP_OFFSET(chan)); |
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data->temp_min[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_TEMP_MIN(chan)); |
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data->temp_max[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_TEMP_MAX(chan)); |
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data->temp_crit[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_TEMP_CRIT(chan)); |
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data->auto_temp[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_AUTO_TEMP(chan)); |
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} |
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data->conf1 = adm1031_read_value(client, ADM1031_REG_CONF1); |
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data->conf2 = adm1031_read_value(client, ADM1031_REG_CONF2); |
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data->alarm = adm1031_read_value(client, ADM1031_REG_STATUS(0)) |
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| (adm1031_read_value(client, ADM1031_REG_STATUS(1)) << 8); |
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if (data->chip_type == adm1030) |
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data->alarm &= 0xc0ff; |
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for (chan = 0; chan < (data->chip_type == adm1030 ? 1 : 2); |
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chan++) { |
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data->fan_div[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_FAN_DIV(chan)); |
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data->fan_min[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_FAN_MIN(chan)); |
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data->fan[chan] = |
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adm1031_read_value(client, |
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ADM1031_REG_FAN_SPEED(chan)); |
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data->pwm[chan] = |
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(adm1031_read_value(client, |
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ADM1031_REG_PWM) >> (4 * chan)) & 0x0f; |
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} |
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data->last_updated = jiffies; |
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data->valid = 1; |
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} |
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mutex_unlock(&data->update_lock); |
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return data; |
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} |
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#define TEMP_TO_REG(val) (((val) < 0 ? ((val - 500) / 1000) : \ |
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((val + 500) / 1000))) |
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#define TEMP_FROM_REG(val) ((val) * 1000) |
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#define TEMP_FROM_REG_EXT(val, ext) (TEMP_FROM_REG(val) + (ext) * 125) |
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#define TEMP_OFFSET_TO_REG(val) (TEMP_TO_REG(val) & 0x8f) |
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#define TEMP_OFFSET_FROM_REG(val) TEMP_FROM_REG((val) < 0 ? \ |
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(val) | 0x70 : (val)) |
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#define FAN_FROM_REG(reg, div) ((reg) ? \ |
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(11250 * 60) / ((reg) * (div)) : 0) |
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static int FAN_TO_REG(int reg, int div) |
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{ |
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int tmp; |
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tmp = FAN_FROM_REG(clamp_val(reg, 0, 65535), div); |
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return tmp > 255 ? 255 : tmp; |
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} |
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#define FAN_DIV_FROM_REG(reg) (1<<(((reg)&0xc0)>>6)) |
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#define PWM_TO_REG(val) (clamp_val((val), 0, 255) >> 4) |
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#define PWM_FROM_REG(val) ((val) << 4) |
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#define FAN_CHAN_FROM_REG(reg) (((reg) >> 5) & 7) |
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#define FAN_CHAN_TO_REG(val, reg) \ |
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(((reg) & 0x1F) | (((val) << 5) & 0xe0)) |
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#define AUTO_TEMP_MIN_TO_REG(val, reg) \ |
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((((val) / 500) & 0xf8) | ((reg) & 0x7)) |
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#define AUTO_TEMP_RANGE_FROM_REG(reg) (5000 * (1 << ((reg) & 0x7))) |
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#define AUTO_TEMP_MIN_FROM_REG(reg) (1000 * ((((reg) >> 3) & 0x1f) << 2)) |
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#define AUTO_TEMP_MIN_FROM_REG_DEG(reg) ((((reg) >> 3) & 0x1f) << 2) |
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#define AUTO_TEMP_OFF_FROM_REG(reg) \ |
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(AUTO_TEMP_MIN_FROM_REG(reg) - 5000) |
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#define AUTO_TEMP_MAX_FROM_REG(reg) \ |
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(AUTO_TEMP_RANGE_FROM_REG(reg) + \ |
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AUTO_TEMP_MIN_FROM_REG(reg)) |
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static int AUTO_TEMP_MAX_TO_REG(int val, int reg, int pwm) |
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{ |
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int ret; |
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int range = val - AUTO_TEMP_MIN_FROM_REG(reg); |
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range = ((val - AUTO_TEMP_MIN_FROM_REG(reg))*10)/(16 - pwm); |
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ret = ((reg & 0xf8) | |
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(range < 10000 ? 0 : |
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range < 20000 ? 1 : |
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range < 40000 ? 2 : range < 80000 ? 3 : 4)); |
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return ret; |
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} |
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/* FAN auto control */ |
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#define GET_FAN_AUTO_BITFIELD(data, idx) \ |
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(*(data)->chan_select_table)[FAN_CHAN_FROM_REG((data)->conf1)][idx % 2] |
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/* |
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* The tables below contains the possible values for the auto fan |
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* control bitfields. the index in the table is the register value. |
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* MSb is the auto fan control enable bit, so the four first entries |
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* in the table disables auto fan control when both bitfields are zero. |
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*/ |
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static const auto_chan_table_t auto_channel_select_table_adm1031 = { |
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{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, |
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{ 2 /* 0b010 */ , 4 /* 0b100 */ }, |
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{ 2 /* 0b010 */ , 2 /* 0b010 */ }, |
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{ 4 /* 0b100 */ , 4 /* 0b100 */ }, |
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{ 7 /* 0b111 */ , 7 /* 0b111 */ }, |
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}; |
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static const auto_chan_table_t auto_channel_select_table_adm1030 = { |
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{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, |
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{ 2 /* 0b10 */ , 0 }, |
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{ 0xff /* invalid */ , 0 }, |
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{ 0xff /* invalid */ , 0 }, |
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{ 3 /* 0b11 */ , 0 }, |
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}; |
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/* |
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* That function checks if a bitfield is valid and returns the other bitfield |
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* nearest match if no exact match where found. |
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*/ |
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static int |
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get_fan_auto_nearest(struct adm1031_data *data, int chan, u8 val, u8 reg) |
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{ |
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int i; |
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int first_match = -1, exact_match = -1; |
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u8 other_reg_val = |
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(*data->chan_select_table)[FAN_CHAN_FROM_REG(reg)][chan ? 0 : 1]; |
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if (val == 0) |
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return 0; |
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for (i = 0; i < 8; i++) { |
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if ((val == (*data->chan_select_table)[i][chan]) && |
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((*data->chan_select_table)[i][chan ? 0 : 1] == |
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other_reg_val)) { |
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/* We found an exact match */ |
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exact_match = i; |
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break; |
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} else if (val == (*data->chan_select_table)[i][chan] && |
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first_match == -1) { |
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/* |
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* Save the first match in case of an exact match has |
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* not been found |
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*/ |
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first_match = i; |
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} |
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} |
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if (exact_match >= 0) |
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return exact_match; |
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else if (first_match >= 0) |
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return first_match; |
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return -EINVAL; |
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} |
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static ssize_t fan_auto_channel_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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int nr = to_sensor_dev_attr(attr)->index; |
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struct adm1031_data *data = adm1031_update_device(dev); |
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return sprintf(buf, "%d\n", GET_FAN_AUTO_BITFIELD(data, nr)); |
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} |
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static ssize_t |
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fan_auto_channel_store(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct adm1031_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int nr = to_sensor_dev_attr(attr)->index; |
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long val; |
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u8 reg; |
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int ret; |
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u8 old_fan_mode; |
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ret = kstrtol(buf, 10, &val); |
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if (ret) |
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return ret; |
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old_fan_mode = data->conf1; |
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mutex_lock(&data->update_lock); |
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ret = get_fan_auto_nearest(data, nr, val, data->conf1); |
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if (ret < 0) { |
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mutex_unlock(&data->update_lock); |
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return ret; |
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} |
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reg = ret; |
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data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1); |
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if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) ^ |
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(old_fan_mode & ADM1031_CONF1_AUTO_MODE)) { |
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if (data->conf1 & ADM1031_CONF1_AUTO_MODE) { |
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/* |
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* Switch to Auto Fan Mode |
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* Save PWM registers |
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* Set PWM registers to 33% Both |
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*/ |
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data->old_pwm[0] = data->pwm[0]; |
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data->old_pwm[1] = data->pwm[1]; |
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adm1031_write_value(client, ADM1031_REG_PWM, 0x55); |
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} else { |
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/* Switch to Manual Mode */ |
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data->pwm[0] = data->old_pwm[0]; |
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data->pwm[1] = data->old_pwm[1]; |
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/* Restore PWM registers */ |
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adm1031_write_value(client, ADM1031_REG_PWM, |
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data->pwm[0] | (data->pwm[1] << 4)); |
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} |
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} |
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data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1); |
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adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1); |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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static SENSOR_DEVICE_ATTR_RW(auto_fan1_channel, fan_auto_channel, 0); |
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static SENSOR_DEVICE_ATTR_RW(auto_fan2_channel, fan_auto_channel, 1); |
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|
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/* Auto Temps */ |
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static ssize_t auto_temp_off_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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int nr = to_sensor_dev_attr(attr)->index; |
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struct adm1031_data *data = adm1031_update_device(dev); |
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return sprintf(buf, "%d\n", |
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AUTO_TEMP_OFF_FROM_REG(data->auto_temp[nr])); |
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} |
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static ssize_t auto_temp_min_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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int nr = to_sensor_dev_attr(attr)->index; |
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struct adm1031_data *data = adm1031_update_device(dev); |
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return sprintf(buf, "%d\n", |
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AUTO_TEMP_MIN_FROM_REG(data->auto_temp[nr])); |
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} |
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static ssize_t |
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auto_temp_min_store(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct adm1031_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int nr = to_sensor_dev_attr(attr)->index; |
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long val; |
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int ret; |
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ret = kstrtol(buf, 10, &val); |
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if (ret) |
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return ret; |
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|
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val = clamp_val(val, 0, 127000); |
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mutex_lock(&data->update_lock); |
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data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]); |
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adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr), |
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data->auto_temp[nr]); |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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static ssize_t auto_temp_max_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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int nr = to_sensor_dev_attr(attr)->index; |
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struct adm1031_data *data = adm1031_update_device(dev); |
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return sprintf(buf, "%d\n", |
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AUTO_TEMP_MAX_FROM_REG(data->auto_temp[nr])); |
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} |
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static ssize_t |
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auto_temp_max_store(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct adm1031_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int nr = to_sensor_dev_attr(attr)->index; |
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long val; |
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int ret; |
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|
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ret = kstrtol(buf, 10, &val); |
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if (ret) |
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return ret; |
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|
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val = clamp_val(val, 0, 127000); |
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mutex_lock(&data->update_lock); |
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data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], |
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data->pwm[nr]); |
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adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr), |
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data->temp_max[nr]); |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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|
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static SENSOR_DEVICE_ATTR_RO(auto_temp1_off, auto_temp_off, 0); |
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static SENSOR_DEVICE_ATTR_RW(auto_temp1_min, auto_temp_min, 0); |
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static SENSOR_DEVICE_ATTR_RW(auto_temp1_max, auto_temp_max, 0); |
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static SENSOR_DEVICE_ATTR_RO(auto_temp2_off, auto_temp_off, 1); |
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static SENSOR_DEVICE_ATTR_RW(auto_temp2_min, auto_temp_min, 1); |
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static SENSOR_DEVICE_ATTR_RW(auto_temp2_max, auto_temp_max, 1); |
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static SENSOR_DEVICE_ATTR_RO(auto_temp3_off, auto_temp_off, 2); |
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static SENSOR_DEVICE_ATTR_RW(auto_temp3_min, auto_temp_min, 2); |
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static SENSOR_DEVICE_ATTR_RW(auto_temp3_max, auto_temp_max, 2); |
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|
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/* pwm */ |
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static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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int nr = to_sensor_dev_attr(attr)->index; |
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struct adm1031_data *data = adm1031_update_device(dev); |
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return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr])); |
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} |
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static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct adm1031_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int nr = to_sensor_dev_attr(attr)->index; |
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long val; |
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int ret, reg; |
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|
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ret = kstrtol(buf, 10, &val); |
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if (ret) |
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return ret; |
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|
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mutex_lock(&data->update_lock); |
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if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) && |
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(((val>>4) & 0xf) != 5)) { |
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/* In automatic mode, the only PWM accepted is 33% */ |
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mutex_unlock(&data->update_lock); |
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return -EINVAL; |
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} |
|
data->pwm[nr] = PWM_TO_REG(val); |
|
reg = adm1031_read_value(client, ADM1031_REG_PWM); |
|
adm1031_write_value(client, ADM1031_REG_PWM, |
|
nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf) |
|
: (data->pwm[nr] & 0xf) | (reg & 0xf0)); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0); |
|
static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1); |
|
static SENSOR_DEVICE_ATTR_RW(auto_fan1_min_pwm, pwm, 0); |
|
static SENSOR_DEVICE_ATTR_RW(auto_fan2_min_pwm, pwm, 1); |
|
|
|
/* Fans */ |
|
|
|
/* |
|
* That function checks the cases where the fan reading is not |
|
* relevant. It is used to provide 0 as fan reading when the fan is |
|
* not supposed to run |
|
*/ |
|
static int trust_fan_readings(struct adm1031_data *data, int chan) |
|
{ |
|
int res = 0; |
|
|
|
if (data->conf1 & ADM1031_CONF1_AUTO_MODE) { |
|
switch (data->conf1 & 0x60) { |
|
case 0x00: |
|
/* |
|
* remote temp1 controls fan1, |
|
* remote temp2 controls fan2 |
|
*/ |
|
res = data->temp[chan+1] >= |
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[chan+1]); |
|
break; |
|
case 0x20: /* remote temp1 controls both fans */ |
|
res = |
|
data->temp[1] >= |
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]); |
|
break; |
|
case 0x40: /* remote temp2 controls both fans */ |
|
res = |
|
data->temp[2] >= |
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2]); |
|
break; |
|
case 0x60: /* max controls both fans */ |
|
res = |
|
data->temp[0] >= |
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[0]) |
|
|| data->temp[1] >= |
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[1]) |
|
|| (data->chip_type == adm1031 |
|
&& data->temp[2] >= |
|
AUTO_TEMP_MIN_FROM_REG_DEG(data->auto_temp[2])); |
|
break; |
|
} |
|
} else { |
|
res = data->pwm[chan] > 0; |
|
} |
|
return res; |
|
} |
|
|
|
static ssize_t fan_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
int value; |
|
|
|
value = trust_fan_readings(data, nr) ? FAN_FROM_REG(data->fan[nr], |
|
FAN_DIV_FROM_REG(data->fan_div[nr])) : 0; |
|
return sprintf(buf, "%d\n", value); |
|
} |
|
|
|
static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[nr])); |
|
} |
|
static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", |
|
FAN_FROM_REG(data->fan_min[nr], |
|
FAN_DIV_FROM_REG(data->fan_div[nr]))); |
|
} |
|
static ssize_t fan_min_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
long val; |
|
int ret; |
|
|
|
ret = kstrtol(buf, 10, &val); |
|
if (ret) |
|
return ret; |
|
|
|
mutex_lock(&data->update_lock); |
|
if (val) { |
|
data->fan_min[nr] = |
|
FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr])); |
|
} else { |
|
data->fan_min[nr] = 0xff; |
|
} |
|
adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
static ssize_t fan_div_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
long val; |
|
u8 tmp; |
|
int old_div; |
|
int new_min; |
|
int ret; |
|
|
|
ret = kstrtol(buf, 10, &val); |
|
if (ret) |
|
return ret; |
|
|
|
tmp = val == 8 ? 0xc0 : |
|
val == 4 ? 0x80 : |
|
val == 2 ? 0x40 : |
|
val == 1 ? 0x00 : |
|
0xff; |
|
if (tmp == 0xff) |
|
return -EINVAL; |
|
|
|
mutex_lock(&data->update_lock); |
|
/* Get fresh readings */ |
|
data->fan_div[nr] = adm1031_read_value(client, |
|
ADM1031_REG_FAN_DIV(nr)); |
|
data->fan_min[nr] = adm1031_read_value(client, |
|
ADM1031_REG_FAN_MIN(nr)); |
|
|
|
/* Write the new clock divider and fan min */ |
|
old_div = FAN_DIV_FROM_REG(data->fan_div[nr]); |
|
data->fan_div[nr] = tmp | (0x3f & data->fan_div[nr]); |
|
new_min = data->fan_min[nr] * old_div / val; |
|
data->fan_min[nr] = new_min > 0xff ? 0xff : new_min; |
|
|
|
adm1031_write_value(client, ADM1031_REG_FAN_DIV(nr), |
|
data->fan_div[nr]); |
|
adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), |
|
data->fan_min[nr]); |
|
|
|
/* Invalidate the cache: fan speed is no longer valid */ |
|
data->valid = 0; |
|
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_RW(fan1_div, fan_div, 0); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1); |
|
static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
|
static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); |
|
|
|
/* Temps */ |
|
static ssize_t temp_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
int ext; |
|
ext = nr == 0 ? |
|
((data->ext_temp[nr] >> 6) & 0x3) * 2 : |
|
(((data->ext_temp[nr] >> ((nr - 1) * 3)) & 7)); |
|
return sprintf(buf, "%d\n", TEMP_FROM_REG_EXT(data->temp[nr], ext)); |
|
} |
|
static ssize_t temp_offset_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", |
|
TEMP_OFFSET_FROM_REG(data->temp_offset[nr])); |
|
} |
|
static ssize_t temp_min_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr])); |
|
} |
|
static ssize_t temp_max_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr])); |
|
} |
|
static ssize_t temp_crit_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr])); |
|
} |
|
static ssize_t temp_offset_store(struct device *dev, |
|
struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
long val; |
|
int ret; |
|
|
|
ret = kstrtol(buf, 10, &val); |
|
if (ret) |
|
return ret; |
|
|
|
val = clamp_val(val, -15000, 15000); |
|
mutex_lock(&data->update_lock); |
|
data->temp_offset[nr] = TEMP_OFFSET_TO_REG(val); |
|
adm1031_write_value(client, ADM1031_REG_TEMP_OFFSET(nr), |
|
data->temp_offset[nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
static ssize_t temp_min_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
long val; |
|
int ret; |
|
|
|
ret = kstrtol(buf, 10, &val); |
|
if (ret) |
|
return ret; |
|
|
|
val = clamp_val(val, -55000, 127000); |
|
mutex_lock(&data->update_lock); |
|
data->temp_min[nr] = TEMP_TO_REG(val); |
|
adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr), |
|
data->temp_min[nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
static ssize_t temp_max_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
long val; |
|
int ret; |
|
|
|
ret = kstrtol(buf, 10, &val); |
|
if (ret) |
|
return ret; |
|
|
|
val = clamp_val(val, -55000, 127000); |
|
mutex_lock(&data->update_lock); |
|
data->temp_max[nr] = TEMP_TO_REG(val); |
|
adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr), |
|
data->temp_max[nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
static ssize_t temp_crit_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int nr = to_sensor_dev_attr(attr)->index; |
|
long val; |
|
int ret; |
|
|
|
ret = kstrtol(buf, 10, &val); |
|
if (ret) |
|
return ret; |
|
|
|
val = clamp_val(val, -55000, 127000); |
|
mutex_lock(&data->update_lock); |
|
data->temp_crit[nr] = TEMP_TO_REG(val); |
|
adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr), |
|
data->temp_crit[nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0); |
|
static SENSOR_DEVICE_ATTR_RW(temp1_offset, temp_offset, 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_RW(temp1_crit, temp_crit, 0); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); |
|
static SENSOR_DEVICE_ATTR_RW(temp2_offset, temp_offset, 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_RW(temp2_crit, temp_crit, 1); |
|
static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2); |
|
static SENSOR_DEVICE_ATTR_RW(temp3_offset, temp_offset, 2); |
|
static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2); |
|
static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2); |
|
static SENSOR_DEVICE_ATTR_RW(temp3_crit, temp_crit, 2); |
|
|
|
/* Alarms */ |
|
static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", data->alarm); |
|
} |
|
|
|
static DEVICE_ATTR_RO(alarms); |
|
|
|
static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int bitnr = to_sensor_dev_attr(attr)->index; |
|
struct adm1031_data *data = adm1031_update_device(dev); |
|
return sprintf(buf, "%d\n", (data->alarm >> bitnr) & 1); |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 0); |
|
static SENSOR_DEVICE_ATTR_RO(fan1_fault, alarm, 1); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 2); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, alarm, 3); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 4); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 5); |
|
static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 6); |
|
static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, alarm, 7); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 8); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_fault, alarm, 9); |
|
static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, alarm, 10); |
|
static SENSOR_DEVICE_ATTR_RO(temp3_min_alarm, alarm, 11); |
|
static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, alarm, 12); |
|
static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 13); |
|
static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 14); |
|
|
|
/* Update Interval */ |
|
static const unsigned int update_intervals[] = { |
|
16000, 8000, 4000, 2000, 1000, 500, 250, 125, |
|
}; |
|
|
|
static ssize_t update_interval_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
|
|
return sprintf(buf, "%u\n", data->update_interval); |
|
} |
|
|
|
static ssize_t update_interval_store(struct device *dev, |
|
struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct adm1031_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
unsigned long val; |
|
int i, err; |
|
u8 reg; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
/* |
|
* Find the nearest update interval from the table. |
|
* Use it to determine the matching update rate. |
|
*/ |
|
for (i = 0; i < ARRAY_SIZE(update_intervals) - 1; i++) { |
|
if (val >= update_intervals[i]) |
|
break; |
|
} |
|
/* if not found, we point to the last entry (lowest update interval) */ |
|
|
|
/* set the new update rate while preserving other settings */ |
|
reg = adm1031_read_value(client, ADM1031_REG_FAN_FILTER); |
|
reg &= ~ADM1031_UPDATE_RATE_MASK; |
|
reg |= i << ADM1031_UPDATE_RATE_SHIFT; |
|
adm1031_write_value(client, ADM1031_REG_FAN_FILTER, reg); |
|
|
|
mutex_lock(&data->update_lock); |
|
data->update_interval = update_intervals[i]; |
|
mutex_unlock(&data->update_lock); |
|
|
|
return count; |
|
} |
|
|
|
static DEVICE_ATTR_RW(update_interval); |
|
|
|
static struct attribute *adm1031_attributes[] = { |
|
&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_fan1_fault.dev_attr.attr, |
|
&sensor_dev_attr_pwm1.dev_attr.attr, |
|
&sensor_dev_attr_auto_fan1_channel.dev_attr.attr, |
|
&sensor_dev_attr_temp1_input.dev_attr.attr, |
|
&sensor_dev_attr_temp1_offset.dev_attr.attr, |
|
&sensor_dev_attr_temp1_min.dev_attr.attr, |
|
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp1_max.dev_attr.attr, |
|
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp1_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_input.dev_attr.attr, |
|
&sensor_dev_attr_temp2_offset.dev_attr.attr, |
|
&sensor_dev_attr_temp2_min.dev_attr.attr, |
|
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_fault.dev_attr.attr, |
|
|
|
&sensor_dev_attr_auto_temp1_off.dev_attr.attr, |
|
&sensor_dev_attr_auto_temp1_min.dev_attr.attr, |
|
&sensor_dev_attr_auto_temp1_max.dev_attr.attr, |
|
|
|
&sensor_dev_attr_auto_temp2_off.dev_attr.attr, |
|
&sensor_dev_attr_auto_temp2_min.dev_attr.attr, |
|
&sensor_dev_attr_auto_temp2_max.dev_attr.attr, |
|
|
|
&sensor_dev_attr_auto_fan1_min_pwm.dev_attr.attr, |
|
|
|
&dev_attr_update_interval.attr, |
|
&dev_attr_alarms.attr, |
|
|
|
NULL |
|
}; |
|
|
|
static const struct attribute_group adm1031_group = { |
|
.attrs = adm1031_attributes, |
|
}; |
|
|
|
static struct attribute *adm1031_attributes_opt[] = { |
|
&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_fan2_fault.dev_attr.attr, |
|
&sensor_dev_attr_pwm2.dev_attr.attr, |
|
&sensor_dev_attr_auto_fan2_channel.dev_attr.attr, |
|
&sensor_dev_attr_temp3_input.dev_attr.attr, |
|
&sensor_dev_attr_temp3_offset.dev_attr.attr, |
|
&sensor_dev_attr_temp3_min.dev_attr.attr, |
|
&sensor_dev_attr_temp3_min_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp3_max.dev_attr.attr, |
|
&sensor_dev_attr_temp3_max_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp3_crit.dev_attr.attr, |
|
&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp3_fault.dev_attr.attr, |
|
&sensor_dev_attr_auto_temp3_off.dev_attr.attr, |
|
&sensor_dev_attr_auto_temp3_min.dev_attr.attr, |
|
&sensor_dev_attr_auto_temp3_max.dev_attr.attr, |
|
&sensor_dev_attr_auto_fan2_min_pwm.dev_attr.attr, |
|
NULL |
|
}; |
|
|
|
static const struct attribute_group adm1031_group_opt = { |
|
.attrs = adm1031_attributes_opt, |
|
}; |
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */ |
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static int adm1031_detect(struct i2c_client *client, |
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struct i2c_board_info *info) |
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{ |
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struct i2c_adapter *adapter = client->adapter; |
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const char *name; |
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int id, co; |
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|
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
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return -ENODEV; |
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id = i2c_smbus_read_byte_data(client, 0x3d); |
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co = i2c_smbus_read_byte_data(client, 0x3e); |
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|
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if (!((id == 0x31 || id == 0x30) && co == 0x41)) |
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return -ENODEV; |
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name = (id == 0x30) ? "adm1030" : "adm1031"; |
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|
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strlcpy(info->type, name, I2C_NAME_SIZE); |
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|
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return 0; |
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} |
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|
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static void adm1031_init_client(struct i2c_client *client) |
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{ |
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unsigned int read_val; |
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unsigned int mask; |
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int i; |
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struct adm1031_data *data = i2c_get_clientdata(client); |
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|
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mask = (ADM1031_CONF2_PWM1_ENABLE | ADM1031_CONF2_TACH1_ENABLE); |
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if (data->chip_type == adm1031) { |
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mask |= (ADM1031_CONF2_PWM2_ENABLE | |
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ADM1031_CONF2_TACH2_ENABLE); |
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} |
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/* Initialize the ADM1031 chip (enables fan speed reading ) */ |
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read_val = adm1031_read_value(client, ADM1031_REG_CONF2); |
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if ((read_val | mask) != read_val) |
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adm1031_write_value(client, ADM1031_REG_CONF2, read_val | mask); |
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|
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read_val = adm1031_read_value(client, ADM1031_REG_CONF1); |
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if ((read_val | ADM1031_CONF1_MONITOR_ENABLE) != read_val) { |
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adm1031_write_value(client, ADM1031_REG_CONF1, |
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read_val | ADM1031_CONF1_MONITOR_ENABLE); |
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} |
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|
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/* Read the chip's update rate */ |
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mask = ADM1031_UPDATE_RATE_MASK; |
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read_val = adm1031_read_value(client, ADM1031_REG_FAN_FILTER); |
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i = (read_val & mask) >> ADM1031_UPDATE_RATE_SHIFT; |
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/* Save it as update interval */ |
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data->update_interval = update_intervals[i]; |
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} |
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|
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static const struct i2c_device_id adm1031_id[]; |
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|
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static int adm1031_probe(struct i2c_client *client) |
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{ |
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struct device *dev = &client->dev; |
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struct device *hwmon_dev; |
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struct adm1031_data *data; |
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|
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data = devm_kzalloc(dev, sizeof(struct adm1031_data), GFP_KERNEL); |
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if (!data) |
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return -ENOMEM; |
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|
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i2c_set_clientdata(client, data); |
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data->client = client; |
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data->chip_type = i2c_match_id(adm1031_id, client)->driver_data; |
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mutex_init(&data->update_lock); |
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|
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if (data->chip_type == adm1030) |
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data->chan_select_table = &auto_channel_select_table_adm1030; |
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else |
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data->chan_select_table = &auto_channel_select_table_adm1031; |
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|
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/* Initialize the ADM1031 chip */ |
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adm1031_init_client(client); |
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|
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/* sysfs hooks */ |
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data->groups[0] = &adm1031_group; |
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if (data->chip_type == adm1031) |
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data->groups[1] = &adm1031_group_opt; |
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|
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hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, |
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data, data->groups); |
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return PTR_ERR_OR_ZERO(hwmon_dev); |
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} |
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|
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static const struct i2c_device_id adm1031_id[] = { |
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{ "adm1030", adm1030 }, |
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{ "adm1031", adm1031 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, adm1031_id); |
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|
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static struct i2c_driver adm1031_driver = { |
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.class = I2C_CLASS_HWMON, |
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.driver = { |
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.name = "adm1031", |
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}, |
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.probe_new = adm1031_probe, |
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.id_table = adm1031_id, |
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.detect = adm1031_detect, |
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.address_list = normal_i2c, |
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}; |
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|
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module_i2c_driver(adm1031_driver); |
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|
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MODULE_AUTHOR("Alexandre d'Alton <[email protected]>"); |
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MODULE_DESCRIPTION("ADM1031/ADM1030 driver"); |
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MODULE_LICENSE("GPL");
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