From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/hwmon/adt7410.c | 111 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 drivers/hwmon/adt7410.c (limited to 'drivers/hwmon/adt7410.c') 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 + */ + +#include +#include +#include +#include + +#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 "); +MODULE_DESCRIPTION("ADT7410/AD7420 driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3