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4b5e536b0e
This allows an userspace application to poll() on the alarm files to get notified in case of a temperature threshold event. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Reviewed-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
/*
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* ADT7410/ADT7420 digital temperature sensor driver
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*
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* Copyright 2012-2013 Analog Devices Inc.
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* Author: Lars-Peter Clausen <lars@metafoo.de>
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*
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* Licensed under the GPL-2 or later.
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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/i2c.h>
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#include "adt7x10.h"
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static int adt7410_i2c_read_word(struct device *dev, u8 reg)
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{
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return i2c_smbus_read_word_swapped(to_i2c_client(dev), reg);
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}
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static int adt7410_i2c_write_word(struct device *dev, u8 reg, u16 data)
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{
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return i2c_smbus_write_word_swapped(to_i2c_client(dev), reg, data);
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}
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static int adt7410_i2c_read_byte(struct device *dev, u8 reg)
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{
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return i2c_smbus_read_byte_data(to_i2c_client(dev), reg);
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}
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static int adt7410_i2c_write_byte(struct device *dev, u8 reg, u8 data)
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{
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return i2c_smbus_write_byte_data(to_i2c_client(dev), reg, data);
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}
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static const struct adt7x10_ops adt7410_i2c_ops = {
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.read_word = adt7410_i2c_read_word,
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.write_word = adt7410_i2c_write_word,
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.read_byte = adt7410_i2c_read_byte,
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.write_byte = adt7410_i2c_write_byte,
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};
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static int adt7410_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
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return -ENODEV;
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return adt7x10_probe(&client->dev, NULL, client->irq, &adt7410_i2c_ops);
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}
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static int adt7410_i2c_remove(struct i2c_client *client)
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{
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return adt7x10_remove(&client->dev, client->irq);
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}
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static const struct i2c_device_id adt7410_ids[] = {
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{ "adt7410", 0 },
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{ "adt7420", 0 },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, adt7410_ids);
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static struct i2c_driver adt7410_driver = {
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.class = I2C_CLASS_HWMON,
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.driver = {
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.name = "adt7410",
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.pm = ADT7X10_DEV_PM_OPS,
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},
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.probe = adt7410_i2c_probe,
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.remove = adt7410_i2c_remove,
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.id_table = adt7410_ids,
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.address_list = I2C_ADDRS(0x48, 0x49, 0x4a, 0x4b),
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};
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module_i2c_driver(adt7410_driver);
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MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
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MODULE_DESCRIPTION("ADT7410/AD7420 driver");
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MODULE_LICENSE("GPL");
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