^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * AD5671R, AD5675R, AD5691R, AD5692R, AD5693, AD5693R,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * AD5694, AD5694R, AD5695R, AD5696, AD5696R
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Digital to analog converters driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright 2018 Analog Devices Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "ad5686.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static int ad5686_i2c_read(struct ad5686_state *st, u8 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct i2c_client *i2c = to_i2c_client(st->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct i2c_msg msg[2] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) .addr = i2c->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) .flags = i2c->flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) .len = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) .buf = &st->data[0].d8[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) .addr = i2c->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) .flags = i2c->flags | I2C_M_RD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) .len = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) .buf = (char *)&st->data[0].d16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) st->data[0].d32 = cpu_to_be32(AD5686_CMD(AD5686_CMD_NOOP) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) AD5686_ADDR(addr) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) ret = i2c_transfer(i2c->adapter, msg, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) return be16_to_cpu(st->data[0].d16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int ad5686_i2c_write(struct ad5686_state *st,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u8 cmd, u8 addr, u16 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct i2c_client *i2c = to_i2c_client(st->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) | AD5686_ADDR(addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) | val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ret = i2c_master_send(i2c, &st->data[0].d8[1], 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return (ret != 3) ? -EIO : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static int ad5686_i2c_probe(struct i2c_client *i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return ad5686_probe(&i2c->dev, id->driver_data, id->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ad5686_i2c_write, ad5686_i2c_read);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int ad5686_i2c_remove(struct i2c_client *i2c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return ad5686_remove(&i2c->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static const struct i2c_device_id ad5686_i2c_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {"ad5311r", ID_AD5311R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {"ad5671r", ID_AD5671R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {"ad5675r", ID_AD5675R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {"ad5691r", ID_AD5691R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {"ad5692r", ID_AD5692R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {"ad5693", ID_AD5693},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {"ad5693r", ID_AD5693R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {"ad5694", ID_AD5694},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {"ad5694r", ID_AD5694R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {"ad5695r", ID_AD5695R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {"ad5696", ID_AD5696},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {"ad5696r", ID_AD5696R},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static struct i2c_driver ad5686_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .name = "ad5696",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .probe = ad5686_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .remove = ad5686_i2c_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) .id_table = ad5686_i2c_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) module_i2c_driver(ad5686_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) MODULE_DESCRIPTION("Analog Devices AD5686 and similar multi-channel DACs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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