^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * ADT7310/ADT7310 digital temperature sensor driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2012-2013 Analog Devices Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Lars-Peter Clausen <lars@metafoo.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "adt7x10.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define ADT7310_STATUS 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define ADT7310_CONFIG 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define ADT7310_TEMPERATURE 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define ADT7310_ID 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define ADT7310_T_CRIT 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define ADT7310_T_HYST 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define ADT7310_T_ALARM_HIGH 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define ADT7310_T_ALARM_LOW 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static const u8 adt7310_reg_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) [ADT7X10_TEMPERATURE] = ADT7310_TEMPERATURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) [ADT7X10_STATUS] = ADT7310_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) [ADT7X10_CONFIG] = ADT7310_CONFIG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) [ADT7X10_T_ALARM_HIGH] = ADT7310_T_ALARM_HIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) [ADT7X10_T_ALARM_LOW] = ADT7310_T_ALARM_LOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) [ADT7X10_T_CRIT] = ADT7310_T_CRIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) [ADT7X10_T_HYST] = ADT7310_T_HYST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) [ADT7X10_ID] = ADT7310_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define ADT7310_CMD_REG_OFFSET 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define ADT7310_CMD_READ 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define AD7310_COMMAND(reg) (adt7310_reg_table[(reg)] << ADT7310_CMD_REG_OFFSET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int adt7310_spi_read_word(struct device *dev, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct spi_device *spi = to_spi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return spi_w8r16be(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct spi_device *spi = to_spi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u8 buf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) buf[0] = AD7310_COMMAND(reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) put_unaligned_be16(data, &buf[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return spi_write(spi, buf, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static int adt7310_spi_read_byte(struct device *dev, u8 reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct spi_device *spi = to_spi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return spi_w8r8(spi, AD7310_COMMAND(reg) | ADT7310_CMD_READ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int adt7310_spi_write_byte(struct device *dev, u8 reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u8 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct spi_device *spi = to_spi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) u8 buf[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) buf[0] = AD7310_COMMAND(reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) buf[1] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return spi_write(spi, buf, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static const struct adt7x10_ops adt7310_spi_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .read_word = adt7310_spi_read_word,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .write_word = adt7310_spi_write_word,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .read_byte = adt7310_spi_read_byte,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .write_byte = adt7310_spi_write_byte,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static int adt7310_spi_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return adt7x10_probe(&spi->dev, spi_get_device_id(spi)->name, spi->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) &adt7310_spi_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static int adt7310_spi_remove(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return adt7x10_remove(&spi->dev, spi->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static const struct spi_device_id adt7310_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) { "adt7310", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) { "adt7320", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_DEVICE_TABLE(spi, adt7310_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static struct spi_driver adt7310_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .name = "adt7310",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .pm = ADT7X10_DEV_PM_OPS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .probe = adt7310_spi_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .remove = adt7310_spi_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .id_table = adt7310_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) module_spi_driver(adt7310_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) MODULE_DESCRIPTION("ADT7310/ADT7320 driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags