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-rw-r--r--drivers/hwmon/adt7410.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/hwmon/adt7410.c b/drivers/hwmon/adt7410.c
new file mode 100644
index 000000000..0cebf6777
--- /dev/null
+++ b/drivers/hwmon/adt7410.c
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ADT7410/ADT7420 digital temperature sensor driver
+ *
+ * Copyright 2012-2013 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+
+#include "adt7x10.h"
+
+static bool adt7410_regmap_is_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case ADT7X10_TEMPERATURE:
+ case ADT7X10_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int adt7410_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+ struct i2c_client *client = context;
+ int regval;
+
+ switch (reg) {
+ case ADT7X10_TEMPERATURE:
+ case ADT7X10_T_ALARM_HIGH:
+ case ADT7X10_T_ALARM_LOW:
+ case ADT7X10_T_CRIT:
+ regval = i2c_smbus_read_word_swapped(client, reg);
+ break;
+ default:
+ regval = i2c_smbus_read_byte_data(client, reg);
+ break;
+ }
+ if (regval < 0)
+ return regval;
+ *val = regval;
+ return 0;
+}
+
+static int adt7410_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+ struct i2c_client *client = context;
+ int ret;
+
+ switch (reg) {
+ case ADT7X10_TEMPERATURE:
+ case ADT7X10_T_ALARM_HIGH:
+ case ADT7X10_T_ALARM_LOW:
+ case ADT7X10_T_CRIT:
+ ret = i2c_smbus_write_word_swapped(client, reg, val);
+ break;
+ default:
+ ret = i2c_smbus_write_byte_data(client, reg, val);
+ break;
+ }
+ return ret;
+}
+
+static const struct regmap_config adt7410_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ .max_register = ADT7X10_ID,
+ .cache_type = REGCACHE_RBTREE,
+ .volatile_reg = adt7410_regmap_is_volatile,
+ .reg_read = adt7410_reg_read,
+ .reg_write = adt7410_reg_write,
+};
+
+static int adt7410_i2c_probe(struct i2c_client *client)
+{
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init(&client->dev, NULL, client,
+ &adt7410_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ return adt7x10_probe(&client->dev, client->name, client->irq, regmap);
+}
+
+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 = pm_sleep_ptr(&adt7x10_dev_pm_ops),
+ },
+ .probe_new = adt7410_i2c_probe,
+ .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");