From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- drivers/hwmon/adt7310.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 drivers/hwmon/adt7310.c (limited to 'drivers/hwmon/adt7310.c') diff --git a/drivers/hwmon/adt7310.c b/drivers/hwmon/adt7310.c new file mode 100644 index 000000000..9fad01191 --- /dev/null +++ b/drivers/hwmon/adt7310.c @@ -0,0 +1,116 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * ADT7310/ADT7310 digital temperature sensor driver + * + * Copyright 2012-2013 Analog Devices Inc. + * Author: Lars-Peter Clausen + */ + +#include +#include +#include +#include + +#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 "); +MODULE_DESCRIPTION("ADT7310/ADT7320 driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3