^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * AD5593R Digital <-> Analog converters driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2015-2016 Analog Devices Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Paul Cercueil <paul.cercueil@analog.com>
^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 "ad5592r-base.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define AD5593R_MODE_CONF (0 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define AD5593R_MODE_DAC_WRITE (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define AD5593R_MODE_ADC_READBACK (4 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define AD5593R_MODE_DAC_READBACK (5 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define AD5593R_MODE_GPIO_READBACK (6 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define AD5593R_MODE_REG_READBACK (7 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static int ad5593r_write_dac(struct ad5592r_state *st, unsigned chan, u16 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct i2c_client *i2c = to_i2c_client(st->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) return i2c_smbus_write_word_swapped(i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) AD5593R_MODE_DAC_WRITE | chan, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static int ad5593r_read_adc(struct ad5592r_state *st, unsigned chan, u16 *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct i2c_client *i2c = to_i2c_client(st->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) s32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) val = i2c_smbus_write_word_swapped(i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) AD5593R_MODE_CONF | AD5592R_REG_ADC_SEQ, BIT(chan));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (val < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return (int) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) val = i2c_smbus_read_word_swapped(i2c, AD5593R_MODE_ADC_READBACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (val < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return (int) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) *value = (u16) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static int ad5593r_reg_write(struct ad5592r_state *st, u8 reg, u16 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct i2c_client *i2c = to_i2c_client(st->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return i2c_smbus_write_word_swapped(i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) AD5593R_MODE_CONF | reg, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static int ad5593r_reg_read(struct ad5592r_state *st, u8 reg, u16 *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct i2c_client *i2c = to_i2c_client(st->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) s32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) val = i2c_smbus_read_word_swapped(i2c, AD5593R_MODE_REG_READBACK | reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (val < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return (int) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) *value = (u16) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int ad5593r_gpio_read(struct ad5592r_state *st, u8 *value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct i2c_client *i2c = to_i2c_client(st->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) s32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) val = i2c_smbus_read_word_swapped(i2c, AD5593R_MODE_GPIO_READBACK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (val < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return (int) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) *value = (u8) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static const struct ad5592r_rw_ops ad5593r_rw_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .write_dac = ad5593r_write_dac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .read_adc = ad5593r_read_adc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .reg_write = ad5593r_reg_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .reg_read = ad5593r_reg_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .gpio_read = ad5593r_gpio_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static int ad5593r_i2c_probe(struct i2c_client *i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return ad5592r_probe(&i2c->dev, id->name, &ad5593r_rw_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static int ad5593r_i2c_remove(struct i2c_client *i2c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return ad5592r_remove(&i2c->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static const struct i2c_device_id ad5593r_i2c_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) { .name = "ad5593r", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) MODULE_DEVICE_TABLE(i2c, ad5593r_i2c_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static const struct of_device_id ad5593r_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) { .compatible = "adi,ad5593r", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) MODULE_DEVICE_TABLE(of, ad5593r_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static const struct acpi_device_id ad5593r_acpi_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {"ADS5593", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) MODULE_DEVICE_TABLE(acpi, ad5593r_acpi_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static struct i2c_driver ad5593r_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .name = "ad5593r",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .of_match_table = ad5593r_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .acpi_match_table = ad5593r_acpi_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .probe = ad5593r_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) .remove = ad5593r_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .id_table = ad5593r_i2c_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) module_i2c_driver(ad5593r_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) MODULE_AUTHOR("Paul Cercueil <paul.cercueil@analog.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) MODULE_DESCRIPTION("Analog Devices AD5593R multi-channel converters");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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