Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / hwmon / adt7410.c

diff --git a/kernel/drivers/hwmon/adt7410.c b/kernel/drivers/hwmon/adt7410.c
new file mode 100644 (file)
index 0000000..0dc066a
--- /dev/null
+++ b/kernel/drivers/hwmon/adt7410.c
@@ -0,0 +1,80 @@
+/*
+ * ADT7410/ADT7420 digital temperature sensor driver
+ *
+ * Copyright 2012-2013 Analog Devices Inc.
+ *   Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+
+#include "adt7x10.h"
+
+static int adt7410_i2c_read_word(struct device *dev, u8 reg)
+{
+       return i2c_smbus_read_word_swapped(to_i2c_client(dev), reg);
+}
+
+static int adt7410_i2c_write_word(struct device *dev, u8 reg, u16 data)
+{
+       return i2c_smbus_write_word_swapped(to_i2c_client(dev), reg, data);
+}
+
+static int adt7410_i2c_read_byte(struct device *dev, u8 reg)
+{
+       return i2c_smbus_read_byte_data(to_i2c_client(dev), reg);
+}
+
+static int adt7410_i2c_write_byte(struct device *dev, u8 reg, u8 data)
+{
+       return i2c_smbus_write_byte_data(to_i2c_client(dev), reg, data);
+}
+
+static const struct adt7x10_ops adt7410_i2c_ops = {
+       .read_word = adt7410_i2c_read_word,
+       .write_word = adt7410_i2c_write_word,
+       .read_byte = adt7410_i2c_read_byte,
+       .write_byte = adt7410_i2c_write_byte,
+};
+
+static int adt7410_i2c_probe(struct i2c_client *client,
+       const struct i2c_device_id *id)
+{
+       if (!i2c_check_functionality(client->adapter,
+                       I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
+               return -ENODEV;
+
+       return adt7x10_probe(&client->dev, NULL, client->irq, &adt7410_i2c_ops);
+}
+
+static int adt7410_i2c_remove(struct i2c_client *client)
+{
+       return adt7x10_remove(&client->dev, client->irq);
+}
+
+static const struct i2c_device_id adt7410_ids[] = {
+       { "adt7410", 0 },
+       { "adt7420", 0 },
+       {}
+};
+MODULE_DEVICE_TABLE(i2c, adt7410_ids);
+
+static struct i2c_driver adt7410_driver = {
+       .class          = I2C_CLASS_HWMON,
+       .driver = {
+               .name   = "adt7410",
+               .pm     = ADT7X10_DEV_PM_OPS,
+       },
+       .probe          = adt7410_i2c_probe,
+       .remove         = adt7410_i2c_remove,
+       .id_table       = adt7410_ids,
+       .address_list   = I2C_ADDRS(0x48, 0x49, 0x4a, 0x4b),
+};
+module_i2c_driver(adt7410_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ADT7410/AD7420 driver");
+MODULE_LICENSE("GPL");