[mirror_ubuntu-jammy-kernel.git] / drivers / hwmon / adt7310.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * ADT7310/ADT7310 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/spi/spi.h>
#include <asm/unaligned.h>

#include "adt7x10.h"

#define ADT7310_STATUS			0
#define ADT7310_CONFIG			1
#define ADT7310_TEMPERATURE		2
#define ADT7310_ID			3
#define ADT7310_T_CRIT			4
#define ADT7310_T_HYST			5
#define ADT7310_T_ALARM_HIGH		6
#define ADT7310_T_ALARM_LOW		7

static const u8 adt7310_reg_table[] = {
	[ADT7X10_TEMPERATURE]   = ADT7310_TEMPERATURE,
	[ADT7X10_STATUS]	= ADT7310_STATUS,
	[ADT7X10_CONFIG]	= ADT7310_CONFIG,
	[ADT7X10_T_ALARM_HIGH]	= ADT7310_T_ALARM_HIGH,
	[ADT7X10_T_ALARM_LOW]	= ADT7310_T_ALARM_LOW,
	[ADT7X10_T_CRIT]	= ADT7310_T_CRIT,
	[ADT7X10_T_HYST]	= ADT7310_T_HYST,
	[ADT7X10_ID]		= ADT7310_ID,
};

#define ADT7310_CMD_REG_OFFSET	3
#define ADT7310_CMD_READ	0x40

#define AD7310_COMMAND(reg) (adt7310_reg_table[(reg)] << ADT7310_CMD_REG_OFFSET)

static int adt7310_spi_read_word(struct device *dev, u8 reg)
{
	struct spi_device *spi = to_spi_device(dev);

	return spi_w8r16be(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
}

static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data)
{
	struct spi_device *spi = to_spi_device(dev);
	u8 buf[3];

	buf[0] = AD7310_COMMAND(reg);
	put_unaligned_be16(data, &buf[1]);

	return spi_write(spi, buf, sizeof(buf));
}

static int adt7310_spi_read_byte(struct device *dev, u8 reg)
{
	struct spi_device *spi = to_spi_device(dev);

	return spi_w8r8(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
}

static int adt7310_spi_write_byte(struct device *dev, u8 reg,
	u8 data)
{
	struct spi_device *spi = to_spi_device(dev);
	u8 buf[2];

	buf[0] = AD7310_COMMAND(reg);
	buf[1] = data;

	return spi_write(spi, buf, sizeof(buf));
}

static const struct adt7x10_ops adt7310_spi_ops = {
	.read_word = adt7310_spi_read_word,
	.write_word = adt7310_spi_write_word,
	.read_byte = adt7310_spi_read_byte,
	.write_byte = adt7310_spi_write_byte,
};

static int adt7310_spi_probe(struct spi_device *spi)
{
	return adt7x10_probe(&spi->dev, spi_get_device_id(spi)->name, spi->irq,
			&adt7310_spi_ops);
}

static int adt7310_spi_remove(struct spi_device *spi)
{
	return adt7x10_remove(&spi->dev, spi->irq);
}

static const struct spi_device_id adt7310_id[] = {
	{ "adt7310", 0 },
	{ "adt7320", 0 },
	{}
};
MODULE_DEVICE_TABLE(spi, adt7310_id);

static struct spi_driver adt7310_driver = {
	.driver = {
		.name	= "adt7310",
		.pm	= ADT7X10_DEV_PM_OPS,
	},
	.probe		= adt7310_spi_probe,
	.remove		= adt7310_spi_remove,
	.id_table	= adt7310_id,
};
module_spi_driver(adt7310_driver);

MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ADT7310/ADT7320 driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
80503b23	1	// SPDX-License-Identifier: GPL-2.0-or-later
51c2a487 LPC	2	/*
	3	* ADT7310/ADT7310 digital temperature sensor driver
	4	*
	5	* Copyright 2012-2013 Analog Devices Inc.
	6	* Author: Lars-Peter Clausen <lars@metafoo.de>
51c2a487 LPC	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/init.h>
	11	#include <linux/spi/spi.h>
	12	#include <asm/unaligned.h>
	13
	14	#include "adt7x10.h"
	15
	16	#define ADT7310_STATUS 0
	17	#define ADT7310_CONFIG 1
	18	#define ADT7310_TEMPERATURE 2
	19	#define ADT7310_ID 3
	20	#define ADT7310_T_CRIT 4
	21	#define ADT7310_T_HYST 5
	22	#define ADT7310_T_ALARM_HIGH 6
	23	#define ADT7310_T_ALARM_LOW 7
	24
	25	static const u8 adt7310_reg_table[] = {
	26	[ADT7X10_TEMPERATURE] = ADT7310_TEMPERATURE,
	27	[ADT7X10_STATUS] = ADT7310_STATUS,
	28	[ADT7X10_CONFIG] = ADT7310_CONFIG,
	29	[ADT7X10_T_ALARM_HIGH] = ADT7310_T_ALARM_HIGH,
	30	[ADT7X10_T_ALARM_LOW] = ADT7310_T_ALARM_LOW,
	31	[ADT7X10_T_CRIT] = ADT7310_T_CRIT,
	32	[ADT7X10_T_HYST] = ADT7310_T_HYST,
	33	[ADT7X10_ID] = ADT7310_ID,
	34	};
	35
	36	#define ADT7310_CMD_REG_OFFSET 3
	37	#define ADT7310_CMD_READ 0x40
	38
	39	#define AD7310_COMMAND(reg) (adt7310_reg_table[(reg)] << ADT7310_CMD_REG_OFFSET)
	40
	41	static int adt7310_spi_read_word(struct device *dev, u8 reg)
	42	{
	43	struct spi_device *spi = to_spi_device(dev);
51c2a487	44
600ba98b	45	return spi_w8r16be(spi, AD7310_COMMAND(reg) \| ADT7310_CMD_READ);
51c2a487 LPC	46	}
	47
	48	static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data)
	49	{
	50	struct spi_device *spi = to_spi_device(dev);
	51	u8 buf[3];
	52
	53	buf[0] = AD7310_COMMAND(reg);
	54	put_unaligned_be16(data, &buf[1]);
	55
	56	return spi_write(spi, buf, sizeof(buf));
	57	}
	58
	59	static int adt7310_spi_read_byte(struct device *dev, u8 reg)
	60	{
	61	struct spi_device *spi = to_spi_device(dev);
	62
	63	return spi_w8r8(spi, AD7310_COMMAND(reg) \| ADT7310_CMD_READ);
	64	}
	65
	66	static int adt7310_spi_write_byte(struct device *dev, u8 reg,
	67	u8 data)
	68	{
	69	struct spi_device *spi = to_spi_device(dev);
	70	u8 buf[2];
	71
	72	buf[0] = AD7310_COMMAND(reg);
	73	buf[1] = data;
	74
	75	return spi_write(spi, buf, sizeof(buf));
	76	}
	77
	78	static const struct adt7x10_ops adt7310_spi_ops = {
	79	.read_word = adt7310_spi_read_word,
	80	.write_word = adt7310_spi_write_word,
	81	.read_byte = adt7310_spi_read_byte,
	82	.write_byte = adt7310_spi_write_byte,
	83	};
	84
	85	static int adt7310_spi_probe(struct spi_device *spi)
	86	{
4b5e536b	87	return adt7x10_probe(&spi->dev, spi_get_device_id(spi)->name, spi->irq,
51c2a487 LPC	88	&adt7310_spi_ops);
	89	}
	90
	91	static int adt7310_spi_remove(struct spi_device *spi)
	92	{
4b5e536b	93	return adt7x10_remove(&spi->dev, spi->irq);
51c2a487 LPC	94	}
	95
	96	static const struct spi_device_id adt7310_id[] = {
	97	{ "adt7310", 0 },
	98	{ "adt7320", 0 },
	99	{}
	100	};
	101	MODULE_DEVICE_TABLE(spi, adt7310_id);
	102
	103	static struct spi_driver adt7310_driver = {
	104	.driver = {
	105	.name = "adt7310",
51c2a487 LPC	106	.pm = ADT7X10_DEV_PM_OPS,
	107	},
	108	.probe = adt7310_spi_probe,
	109	.remove = adt7310_spi_remove,
	110	.id_table = adt7310_id,
	111	};
	112	module_spi_driver(adt7310_driver);
	113
	114	MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
	115	MODULE_DESCRIPTION("ADT7310/ADT7320 driver");
	116	MODULE_LICENSE("GPL");