[linux-2.6-block.git] / drivers / hwmon / adt7410.c

// 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_MAPLE,
	.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" },
	{ "adt7420" },
	{}
};
MODULE_DEVICE_TABLE(i2c, adt7410_ids);

static struct i2c_driver adt7410_driver = {
	.driver = {
		.name	= "adt7410",
		.pm	= pm_sleep_ptr(&adt7x10_dev_pm_ops),
	},
	.probe		= adt7410_i2c_probe,
	.id_table	= adt7410_ids,
};
module_i2c_driver(adt7410_driver);

MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ADT7410/AD7420 driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
80503b23	1	// SPDX-License-Identifier: GPL-2.0-or-later
983b97be	2	/*
51c2a487	3	* ADT7410/ADT7420 digital temperature sensor driver
983b97be	4	*
51c2a487 LPC	5	* Copyright 2012-2013 Analog Devices Inc.
51c2a487 LPC	6	* Author: Lars-Peter Clausen <lars@metafoo.de>
983b97be HK	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/init.h>
983b97be	11	#include <linux/i2c.h>
f5320701	12	#include <linux/regmap.h>
983b97be	13
51c2a487	14	#include "adt7x10.h"
983b97be	15
f5320701	16	static bool adt7410_regmap_is_volatile(struct device *dev, unsigned int reg)
983b97be	17	{
f5320701 GR	18	switch (reg) {
	19	case ADT7X10_TEMPERATURE:
	20	case ADT7X10_STATUS:
	21	return true;
	22	default:
	23	return false;
	24	}
983b97be HK	25	}
983b97be HK	26
f5320701	27	static int adt7410_reg_read(void context, unsigned int reg, unsigned int val)
983b97be	28	{
f5320701 GR	29	struct i2c_client *client = context;
f5320701 GR	30	int regval;
983b97be	31
f5320701 GR	32	switch (reg) {
	33	case ADT7X10_TEMPERATURE:
	34	case ADT7X10_T_ALARM_HIGH:
	35	case ADT7X10_T_ALARM_LOW:
	36	case ADT7X10_T_CRIT:
	37	regval = i2c_smbus_read_word_swapped(client, reg);
	38	break;
	39	default:
	40	regval = i2c_smbus_read_byte_data(client, reg);
	41	break;
	42	}
	43	if (regval < 0)
	44	return regval;
	45	*val = regval;
	46	return 0;
983b97be HK	47	}
983b97be HK	48
f5320701	49	static int adt7410_reg_write(void *context, unsigned int reg, unsigned int val)
983b97be	50	{
f5320701 GR	51	struct i2c_client *client = context;
	52	int ret;
	53
	54	switch (reg) {
	55	case ADT7X10_TEMPERATURE:
	56	case ADT7X10_T_ALARM_HIGH:
	57	case ADT7X10_T_ALARM_LOW:
	58	case ADT7X10_T_CRIT:
	59	ret = i2c_smbus_write_word_swapped(client, reg, val);
	60	break;
	61	default:
	62	ret = i2c_smbus_write_byte_data(client, reg, val);
	63	break;
	64	}
	65	return ret;
983b97be HK	66	}
983b97be HK	67
f5320701 GR	68	static const struct regmap_config adt7410_regmap_config = {
	69	.reg_bits = 8,
	70	.val_bits = 16,
	71	.max_register = ADT7X10_ID,
f5b75bde	72	.cache_type = REGCACHE_MAPLE,
f5320701 GR	73	.volatile_reg = adt7410_regmap_is_volatile,
	74	.reg_read = adt7410_reg_read,
	75	.reg_write = adt7410_reg_write,
983b97be HK	76	};
983b97be HK	77
67487038	78	static int adt7410_i2c_probe(struct i2c_client *client)
983b97be	79	{
f5320701 GR	80	struct regmap *regmap;
	81
	82	regmap = devm_regmap_init(&client->dev, NULL, client,
	83	&adt7410_regmap_config);
	84	if (IS_ERR(regmap))
	85	return PTR_ERR(regmap);
983b97be	86
a748d30c	87	return adt7x10_probe(&client->dev, client->name, client->irq, regmap);
983b97be HK	88	}
983b97be HK	89
983b97be	90	static const struct i2c_device_id adt7410_ids[] = {
d8a66f36 UKK	91	{ "adt7410" },
d8a66f36 UKK	92	{ "adt7420" },
51c2a487	93	{}
983b97be HK	94	};
	95	MODULE_DEVICE_TABLE(i2c, adt7410_ids);
	96
983b97be	97	static struct i2c_driver adt7410_driver = {
983b97be HK	98	.driver = {
983b97be HK	99	.name = "adt7410",
29805956	100	.pm = pm_sleep_ptr(&adt7x10_dev_pm_ops),
983b97be	101	},
1975d167	102	.probe = adt7410_i2c_probe,
983b97be	103	.id_table = adt7410_ids,
983b97be	104	};
983b97be HK	105	module_i2c_driver(adt7410_driver);
983b97be HK	106
51c2a487 LPC	107	MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
51c2a487 LPC	108	MODULE_DESCRIPTION("ADT7410/AD7420 driver");
983b97be	109	MODULE_LICENSE("GPL");