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910 lines
25 KiB
910 lines
25 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware |
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* monitoring |
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* Copyright (c) 1998, 1999 Frodo Looijaard <[email protected]>, |
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* Kyösti Mälkki <[email protected]> |
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* Copyright (c) 2005 Maarten Deprez <[email protected]> |
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*/ |
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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/hwmon-vid.h> |
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#include <linux/err.h> |
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#include <linux/mutex.h> |
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#include <linux/sysfs.h> |
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/* Type of the extra sensor */ |
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static unsigned short extra_sensor_type; |
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module_param(extra_sensor_type, ushort, 0); |
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MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); |
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/* Addresses to scan */ |
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static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; |
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/* |
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* Many GL520 constants specified below |
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* One of the inputs can be configured as either temp or voltage. |
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* That's why _TEMP2 and _IN4 access the same register |
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*/ |
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|
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/* The GL520 registers */ |
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#define GL520_REG_CHIP_ID 0x00 |
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#define GL520_REG_REVISION 0x01 |
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#define GL520_REG_CONF 0x03 |
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#define GL520_REG_MASK 0x11 |
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#define GL520_REG_VID_INPUT 0x02 |
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static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; |
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static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; |
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static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; |
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static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; |
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static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; |
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static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; |
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static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; |
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#define GL520_REG_FAN_INPUT 0x07 |
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#define GL520_REG_FAN_MIN 0x08 |
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#define GL520_REG_FAN_DIV 0x0f |
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#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV |
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#define GL520_REG_ALARMS 0x12 |
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#define GL520_REG_BEEP_MASK 0x10 |
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#define GL520_REG_BEEP_ENABLE GL520_REG_CONF |
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/* Client data */ |
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struct gl520_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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char valid; /* zero until the following fields are valid */ |
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unsigned long last_updated; /* in jiffies */ |
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u8 vid; |
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u8 vrm; |
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u8 in_input[5]; /* [0] = VVD */ |
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u8 in_min[5]; /* [0] = VDD */ |
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u8 in_max[5]; /* [0] = VDD */ |
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u8 fan_input[2]; |
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u8 fan_min[2]; |
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u8 fan_div[2]; |
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u8 fan_off; |
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u8 temp_input[2]; |
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u8 temp_max[2]; |
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u8 temp_max_hyst[2]; |
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u8 alarms; |
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u8 beep_enable; |
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u8 beep_mask; |
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u8 alarm_mask; |
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u8 two_temps; |
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}; |
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/* |
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* Registers 0x07 to 0x0c are word-sized, others are byte-sized |
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* GL520 uses a high-byte first convention |
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*/ |
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static int gl520_read_value(struct i2c_client *client, u8 reg) |
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{ |
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if ((reg >= 0x07) && (reg <= 0x0c)) |
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return i2c_smbus_read_word_swapped(client, reg); |
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else |
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return i2c_smbus_read_byte_data(client, reg); |
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} |
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static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) |
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{ |
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if ((reg >= 0x07) && (reg <= 0x0c)) |
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return i2c_smbus_write_word_swapped(client, reg, value); |
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else |
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return i2c_smbus_write_byte_data(client, reg, value); |
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} |
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static struct gl520_data *gl520_update_device(struct device *dev) |
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{ |
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struct gl520_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int val, i; |
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mutex_lock(&data->update_lock); |
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if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { |
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dev_dbg(&client->dev, "Starting gl520sm update\n"); |
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data->alarms = gl520_read_value(client, GL520_REG_ALARMS); |
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data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); |
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data->vid = gl520_read_value(client, |
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GL520_REG_VID_INPUT) & 0x1f; |
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for (i = 0; i < 4; i++) { |
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data->in_input[i] = gl520_read_value(client, |
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GL520_REG_IN_INPUT[i]); |
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val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); |
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data->in_min[i] = val & 0xff; |
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data->in_max[i] = (val >> 8) & 0xff; |
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} |
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val = gl520_read_value(client, GL520_REG_FAN_INPUT); |
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data->fan_input[0] = (val >> 8) & 0xff; |
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data->fan_input[1] = val & 0xff; |
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val = gl520_read_value(client, GL520_REG_FAN_MIN); |
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data->fan_min[0] = (val >> 8) & 0xff; |
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data->fan_min[1] = val & 0xff; |
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data->temp_input[0] = gl520_read_value(client, |
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GL520_REG_TEMP_INPUT[0]); |
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data->temp_max[0] = gl520_read_value(client, |
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GL520_REG_TEMP_MAX[0]); |
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data->temp_max_hyst[0] = gl520_read_value(client, |
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GL520_REG_TEMP_MAX_HYST[0]); |
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val = gl520_read_value(client, GL520_REG_FAN_DIV); |
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data->fan_div[0] = (val >> 6) & 0x03; |
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data->fan_div[1] = (val >> 4) & 0x03; |
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data->fan_off = (val >> 2) & 0x01; |
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data->alarms &= data->alarm_mask; |
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val = gl520_read_value(client, GL520_REG_CONF); |
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data->beep_enable = !((val >> 2) & 1); |
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/* Temp1 and Vin4 are the same input */ |
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if (data->two_temps) { |
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data->temp_input[1] = gl520_read_value(client, |
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GL520_REG_TEMP_INPUT[1]); |
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data->temp_max[1] = gl520_read_value(client, |
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GL520_REG_TEMP_MAX[1]); |
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data->temp_max_hyst[1] = gl520_read_value(client, |
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GL520_REG_TEMP_MAX_HYST[1]); |
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} else { |
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data->in_input[4] = gl520_read_value(client, |
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GL520_REG_IN_INPUT[4]); |
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data->in_min[4] = gl520_read_value(client, |
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GL520_REG_IN_MIN[4]); |
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data->in_max[4] = gl520_read_value(client, |
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GL520_REG_IN_MAX[4]); |
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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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/* |
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* Sysfs stuff |
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*/ |
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static ssize_t cpu0_vid_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct gl520_data *data = gl520_update_device(dev); |
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return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); |
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} |
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static DEVICE_ATTR_RO(cpu0_vid); |
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#define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4) |
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#define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4) |
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#define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95) |
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#define IN_FROM_REG(val) ((val) * 19) |
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#define IN_CLAMP(val) clamp_val(val, 0, 255 * 19) |
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#define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19) |
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static ssize_t in_input_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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int n = to_sensor_dev_attr(attr)->index; |
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struct gl520_data *data = gl520_update_device(dev); |
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u8 r = data->in_input[n]; |
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if (n == 0) |
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return sprintf(buf, "%d\n", VDD_FROM_REG(r)); |
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else |
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return sprintf(buf, "%d\n", IN_FROM_REG(r)); |
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} |
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static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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int n = to_sensor_dev_attr(attr)->index; |
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struct gl520_data *data = gl520_update_device(dev); |
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u8 r = data->in_min[n]; |
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if (n == 0) |
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return sprintf(buf, "%d\n", VDD_FROM_REG(r)); |
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else |
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return sprintf(buf, "%d\n", IN_FROM_REG(r)); |
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} |
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static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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int n = to_sensor_dev_attr(attr)->index; |
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struct gl520_data *data = gl520_update_device(dev); |
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u8 r = data->in_max[n]; |
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if (n == 0) |
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return sprintf(buf, "%d\n", VDD_FROM_REG(r)); |
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else |
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return sprintf(buf, "%d\n", IN_FROM_REG(r)); |
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} |
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static ssize_t in_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 gl520_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int n = to_sensor_dev_attr(attr)->index; |
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u8 r; |
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long v; |
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int err; |
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err = kstrtol(buf, 10, &v); |
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if (err) |
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return err; |
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mutex_lock(&data->update_lock); |
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if (n == 0) |
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r = VDD_TO_REG(v); |
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else |
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r = IN_TO_REG(v); |
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data->in_min[n] = r; |
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if (n < 4) |
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gl520_write_value(client, GL520_REG_IN_MIN[n], |
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(gl520_read_value(client, GL520_REG_IN_MIN[n]) |
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& ~0xff) | r); |
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else |
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gl520_write_value(client, GL520_REG_IN_MIN[n], r); |
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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 in_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 gl520_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int n = to_sensor_dev_attr(attr)->index; |
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u8 r; |
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long v; |
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int err; |
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err = kstrtol(buf, 10, &v); |
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if (err) |
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return err; |
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if (n == 0) |
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r = VDD_TO_REG(v); |
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else |
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r = IN_TO_REG(v); |
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mutex_lock(&data->update_lock); |
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data->in_max[n] = r; |
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if (n < 4) |
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gl520_write_value(client, GL520_REG_IN_MAX[n], |
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(gl520_read_value(client, GL520_REG_IN_MAX[n]) |
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& ~0xff00) | (r << 8)); |
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else |
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gl520_write_value(client, GL520_REG_IN_MAX[n], r); |
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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_RO(in0_input, in_input, 0); |
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static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1); |
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static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2); |
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static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3); |
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static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4); |
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static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); |
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static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); |
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static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); |
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static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); |
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static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); |
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static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); |
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static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); |
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static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); |
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static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); |
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static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); |
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#define DIV_FROM_REG(val) (1 << (val)) |
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#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div)))) |
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#define FAN_BASE(div) (480000 >> (div)) |
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#define FAN_CLAMP(val, div) clamp_val(val, FAN_BASE(div) / 255, \ |
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FAN_BASE(div)) |
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#define FAN_TO_REG(val, div) ((val) == 0 ? 0 : \ |
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DIV_ROUND_CLOSEST(480000, \ |
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FAN_CLAMP(val, div) << (div))) |
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static ssize_t fan_input_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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int n = to_sensor_dev_attr(attr)->index; |
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struct gl520_data *data = gl520_update_device(dev); |
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n], |
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data->fan_div[n])); |
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} |
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static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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int n = to_sensor_dev_attr(attr)->index; |
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struct gl520_data *data = gl520_update_device(dev); |
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], |
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data->fan_div[n])); |
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} |
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static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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int n = to_sensor_dev_attr(attr)->index; |
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struct gl520_data *data = gl520_update_device(dev); |
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return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); |
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} |
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static ssize_t fan1_off_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct gl520_data *data = gl520_update_device(dev); |
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return sprintf(buf, "%d\n", data->fan_off); |
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} |
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static ssize_t fan_min_store(struct device *dev, |
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struct device_attribute *attr, const char *buf, |
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size_t count) |
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{ |
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struct gl520_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int n = to_sensor_dev_attr(attr)->index; |
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u8 r; |
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unsigned long v; |
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int err; |
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err = kstrtoul(buf, 10, &v); |
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if (err) |
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return err; |
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mutex_lock(&data->update_lock); |
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r = FAN_TO_REG(v, data->fan_div[n]); |
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data->fan_min[n] = r; |
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if (n == 0) |
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gl520_write_value(client, GL520_REG_FAN_MIN, |
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(gl520_read_value(client, GL520_REG_FAN_MIN) |
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& ~0xff00) | (r << 8)); |
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else |
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gl520_write_value(client, GL520_REG_FAN_MIN, |
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(gl520_read_value(client, GL520_REG_FAN_MIN) |
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& ~0xff) | r); |
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data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); |
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if (data->fan_min[n] == 0) |
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data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; |
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else |
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data->alarm_mask |= (n == 0) ? 0x20 : 0x40; |
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data->beep_mask &= data->alarm_mask; |
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gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); |
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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 fan_div_store(struct device *dev, |
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struct device_attribute *attr, const char *buf, |
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size_t count) |
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{ |
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struct gl520_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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int n = to_sensor_dev_attr(attr)->index; |
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u8 r; |
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unsigned long v; |
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int err; |
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err = kstrtoul(buf, 10, &v); |
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if (err) |
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return err; |
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switch (v) { |
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case 1: |
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r = 0; |
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break; |
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case 2: |
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r = 1; |
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break; |
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case 4: |
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r = 2; |
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break; |
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case 8: |
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r = 3; |
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break; |
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default: |
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dev_err(&client->dev, |
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"fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); |
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return -EINVAL; |
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} |
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mutex_lock(&data->update_lock); |
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data->fan_div[n] = r; |
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if (n == 0) |
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gl520_write_value(client, GL520_REG_FAN_DIV, |
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(gl520_read_value(client, GL520_REG_FAN_DIV) |
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& ~0xc0) | (r << 6)); |
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else |
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gl520_write_value(client, GL520_REG_FAN_DIV, |
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(gl520_read_value(client, GL520_REG_FAN_DIV) |
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& ~0x30) | (r << 4)); |
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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 fan1_off_store(struct device *dev, |
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struct device_attribute *attr, const char *buf, |
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size_t count) |
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{ |
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struct gl520_data *data = dev_get_drvdata(dev); |
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struct i2c_client *client = data->client; |
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u8 r; |
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unsigned long v; |
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int err; |
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err = kstrtoul(buf, 10, &v); |
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if (err) |
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return err; |
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r = (v ? 1 : 0); |
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mutex_lock(&data->update_lock); |
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data->fan_off = r; |
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gl520_write_value(client, GL520_REG_FAN_OFF, |
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(gl520_read_value(client, GL520_REG_FAN_OFF) |
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& ~0x0c) | (r << 2)); |
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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_RO(fan1_input, fan_input, 0); |
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static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); |
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static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); |
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static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); |
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static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); |
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static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); |
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static DEVICE_ATTR_RW(fan1_off); |
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|
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#define TEMP_FROM_REG(val) (((val) - 130) * 1000) |
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#define TEMP_CLAMP(val) clamp_val(val, -130000, 125000) |
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#define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 130) |
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|
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static ssize_t temp_input_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
|
int n = to_sensor_dev_attr(attr)->index; |
|
struct gl520_data *data = gl520_update_device(dev); |
|
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); |
|
} |
|
|
|
static ssize_t temp_max_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
int n = to_sensor_dev_attr(attr)->index; |
|
struct gl520_data *data = gl520_update_device(dev); |
|
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); |
|
} |
|
|
|
static ssize_t temp_max_hyst_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
int n = to_sensor_dev_attr(attr)->index; |
|
struct gl520_data *data = gl520_update_device(dev); |
|
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); |
|
} |
|
|
|
static ssize_t temp_max_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct gl520_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int n = to_sensor_dev_attr(attr)->index; |
|
long v; |
|
int err; |
|
|
|
err = kstrtol(buf, 10, &v); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->temp_max[n] = TEMP_TO_REG(v); |
|
gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static ssize_t temp_max_hyst_store(struct device *dev, |
|
struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct gl520_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int n = to_sensor_dev_attr(attr)->index; |
|
long v; |
|
int err; |
|
|
|
err = kstrtol(buf, 10, &v); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->temp_max_hyst[n] = TEMP_TO_REG(v); |
|
gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], |
|
data->temp_max_hyst[n]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); |
|
static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); |
|
static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); |
|
static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp_max_hyst, 0); |
|
static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_max_hyst, 1); |
|
|
|
static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct gl520_data *data = gl520_update_device(dev); |
|
return sprintf(buf, "%d\n", data->alarms); |
|
} |
|
|
|
static ssize_t beep_enable_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct gl520_data *data = gl520_update_device(dev); |
|
return sprintf(buf, "%d\n", data->beep_enable); |
|
} |
|
|
|
static ssize_t beep_mask_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct gl520_data *data = gl520_update_device(dev); |
|
return sprintf(buf, "%d\n", data->beep_mask); |
|
} |
|
|
|
static ssize_t beep_enable_store(struct device *dev, |
|
struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct gl520_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
u8 r; |
|
unsigned long v; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &v); |
|
if (err) |
|
return err; |
|
|
|
r = (v ? 0 : 1); |
|
|
|
mutex_lock(&data->update_lock); |
|
data->beep_enable = !r; |
|
gl520_write_value(client, GL520_REG_BEEP_ENABLE, |
|
(gl520_read_value(client, GL520_REG_BEEP_ENABLE) |
|
& ~0x04) | (r << 2)); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static ssize_t beep_mask_store(struct device *dev, |
|
struct device_attribute *attr, const char *buf, |
|
size_t count) |
|
{ |
|
struct gl520_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
unsigned long r; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &r); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
r &= data->alarm_mask; |
|
data->beep_mask = r; |
|
gl520_write_value(client, GL520_REG_BEEP_MASK, r); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static DEVICE_ATTR_RO(alarms); |
|
static DEVICE_ATTR_RW(beep_enable); |
|
static DEVICE_ATTR_RW(beep_mask); |
|
|
|
static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int bit_nr = to_sensor_dev_attr(attr)->index; |
|
struct gl520_data *data = gl520_update_device(dev); |
|
|
|
return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1); |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); |
|
static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); |
|
static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); |
|
static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); |
|
static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); |
|
static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5); |
|
static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6); |
|
static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 7); |
|
static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 7); |
|
|
|
static ssize_t beep_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
int bitnr = to_sensor_dev_attr(attr)->index; |
|
struct gl520_data *data = gl520_update_device(dev); |
|
|
|
return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1); |
|
} |
|
|
|
static ssize_t beep_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct gl520_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int bitnr = to_sensor_dev_attr(attr)->index; |
|
unsigned long bit; |
|
|
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &bit); |
|
if (err) |
|
return err; |
|
if (bit & ~1) |
|
return -EINVAL; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); |
|
if (bit) |
|
data->beep_mask |= (1 << bitnr); |
|
else |
|
data->beep_mask &= ~(1 << bitnr); |
|
gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0); |
|
static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1); |
|
static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2); |
|
static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3); |
|
static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4); |
|
static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5); |
|
static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6); |
|
static SENSOR_DEVICE_ATTR_RW(temp2_beep, beep, 7); |
|
static SENSOR_DEVICE_ATTR_RW(in4_beep, beep, 7); |
|
|
|
static struct attribute *gl520_attributes[] = { |
|
&dev_attr_cpu0_vid.attr, |
|
|
|
&sensor_dev_attr_in0_input.dev_attr.attr, |
|
&sensor_dev_attr_in0_min.dev_attr.attr, |
|
&sensor_dev_attr_in0_max.dev_attr.attr, |
|
&sensor_dev_attr_in0_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in0_beep.dev_attr.attr, |
|
&sensor_dev_attr_in1_input.dev_attr.attr, |
|
&sensor_dev_attr_in1_min.dev_attr.attr, |
|
&sensor_dev_attr_in1_max.dev_attr.attr, |
|
&sensor_dev_attr_in1_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in1_beep.dev_attr.attr, |
|
&sensor_dev_attr_in2_input.dev_attr.attr, |
|
&sensor_dev_attr_in2_min.dev_attr.attr, |
|
&sensor_dev_attr_in2_max.dev_attr.attr, |
|
&sensor_dev_attr_in2_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in2_beep.dev_attr.attr, |
|
&sensor_dev_attr_in3_input.dev_attr.attr, |
|
&sensor_dev_attr_in3_min.dev_attr.attr, |
|
&sensor_dev_attr_in3_max.dev_attr.attr, |
|
&sensor_dev_attr_in3_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in3_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr, |
|
&sensor_dev_attr_fan1_min.dev_attr.attr, |
|
&sensor_dev_attr_fan1_div.dev_attr.attr, |
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan1_beep.dev_attr.attr, |
|
&dev_attr_fan1_off.attr, |
|
&sensor_dev_attr_fan2_input.dev_attr.attr, |
|
&sensor_dev_attr_fan2_min.dev_attr.attr, |
|
&sensor_dev_attr_fan2_div.dev_attr.attr, |
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr, |
|
&sensor_dev_attr_fan2_beep.dev_attr.attr, |
|
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr, |
|
&sensor_dev_attr_temp1_max.dev_attr.attr, |
|
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr, |
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp1_beep.dev_attr.attr, |
|
|
|
&dev_attr_alarms.attr, |
|
&dev_attr_beep_enable.attr, |
|
&dev_attr_beep_mask.attr, |
|
NULL |
|
}; |
|
|
|
static const struct attribute_group gl520_group = { |
|
.attrs = gl520_attributes, |
|
}; |
|
|
|
static struct attribute *gl520_attributes_in4[] = { |
|
&sensor_dev_attr_in4_input.dev_attr.attr, |
|
&sensor_dev_attr_in4_min.dev_attr.attr, |
|
&sensor_dev_attr_in4_max.dev_attr.attr, |
|
&sensor_dev_attr_in4_alarm.dev_attr.attr, |
|
&sensor_dev_attr_in4_beep.dev_attr.attr, |
|
NULL |
|
}; |
|
|
|
static struct attribute *gl520_attributes_temp2[] = { |
|
&sensor_dev_attr_temp2_input.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max.dev_attr.attr, |
|
&sensor_dev_attr_temp2_max_hyst.dev_attr.attr, |
|
&sensor_dev_attr_temp2_alarm.dev_attr.attr, |
|
&sensor_dev_attr_temp2_beep.dev_attr.attr, |
|
NULL |
|
}; |
|
|
|
static const struct attribute_group gl520_group_in4 = { |
|
.attrs = gl520_attributes_in4, |
|
}; |
|
|
|
static const struct attribute_group gl520_group_temp2 = { |
|
.attrs = gl520_attributes_temp2, |
|
}; |
|
|
|
|
|
/* |
|
* Real code |
|
*/ |
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */ |
|
static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info) |
|
{ |
|
struct i2c_adapter *adapter = client->adapter; |
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | |
|
I2C_FUNC_SMBUS_WORD_DATA)) |
|
return -ENODEV; |
|
|
|
/* Determine the chip type. */ |
|
if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || |
|
((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || |
|
((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { |
|
dev_dbg(&client->dev, "Unknown chip type, skipping\n"); |
|
return -ENODEV; |
|
} |
|
|
|
strlcpy(info->type, "gl520sm", I2C_NAME_SIZE); |
|
|
|
return 0; |
|
} |
|
|
|
/* Called when we have found a new GL520SM. */ |
|
static void gl520_init_client(struct i2c_client *client) |
|
{ |
|
struct gl520_data *data = i2c_get_clientdata(client); |
|
u8 oldconf, conf; |
|
|
|
conf = oldconf = gl520_read_value(client, GL520_REG_CONF); |
|
|
|
data->alarm_mask = 0xff; |
|
data->vrm = vid_which_vrm(); |
|
|
|
if (extra_sensor_type == 1) |
|
conf &= ~0x10; |
|
else if (extra_sensor_type == 2) |
|
conf |= 0x10; |
|
data->two_temps = !(conf & 0x10); |
|
|
|
/* If IRQ# is disabled, we can safely force comparator mode */ |
|
if (!(conf & 0x20)) |
|
conf &= 0xf7; |
|
|
|
/* Enable monitoring if needed */ |
|
conf |= 0x40; |
|
|
|
if (conf != oldconf) |
|
gl520_write_value(client, GL520_REG_CONF, conf); |
|
|
|
gl520_update_device(&(client->dev)); |
|
|
|
if (data->fan_min[0] == 0) |
|
data->alarm_mask &= ~0x20; |
|
if (data->fan_min[1] == 0) |
|
data->alarm_mask &= ~0x40; |
|
|
|
data->beep_mask &= data->alarm_mask; |
|
gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); |
|
} |
|
|
|
static int gl520_probe(struct i2c_client *client) |
|
{ |
|
struct device *dev = &client->dev; |
|
struct device *hwmon_dev; |
|
struct gl520_data *data; |
|
|
|
data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
i2c_set_clientdata(client, data); |
|
mutex_init(&data->update_lock); |
|
data->client = client; |
|
|
|
/* Initialize the GL520SM chip */ |
|
gl520_init_client(client); |
|
|
|
/* sysfs hooks */ |
|
data->groups[0] = &gl520_group; |
|
|
|
if (data->two_temps) |
|
data->groups[1] = &gl520_group_temp2; |
|
else |
|
data->groups[1] = &gl520_group_in4; |
|
|
|
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 gl520_id[] = { |
|
{ "gl520sm", 0 }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, gl520_id); |
|
|
|
static struct i2c_driver gl520_driver = { |
|
.class = I2C_CLASS_HWMON, |
|
.driver = { |
|
.name = "gl520sm", |
|
}, |
|
.probe_new = gl520_probe, |
|
.id_table = gl520_id, |
|
.detect = gl520_detect, |
|
.address_list = normal_i2c, |
|
}; |
|
|
|
module_i2c_driver(gl520_driver); |
|
|
|
MODULE_AUTHOR("Frodo Looijaard <[email protected]>, " |
|
"Kyösti Mälkki <[email protected]>, " |
|
"Maarten Deprez <[email protected]>"); |
|
MODULE_DESCRIPTION("GL520SM driver"); |
|
MODULE_LICENSE("GPL");
|
|
|