^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) * SPI driver for hmc5983
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) Josef Gajdusek <atx@atx.name>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "hmc5843.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static const struct regmap_range hmc5843_readable_ranges[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) regmap_reg_range(0, HMC5843_ID_END),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static const struct regmap_access_table hmc5843_readable_table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) .yes_ranges = hmc5843_readable_ranges,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static const struct regmap_range hmc5843_writable_ranges[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) regmap_reg_range(0, HMC5843_MODE_REG),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static const struct regmap_access_table hmc5843_writable_table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) .yes_ranges = hmc5843_writable_ranges,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges),
^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) static const struct regmap_range hmc5843_volatile_ranges[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG),
^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) static const struct regmap_access_table hmc5843_volatile_table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) .yes_ranges = hmc5843_volatile_ranges,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static const struct regmap_config hmc5843_spi_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) .val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) .rd_table = &hmc5843_readable_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .wr_table = &hmc5843_writable_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .volatile_table = &hmc5843_volatile_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* Autoincrement address pointer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .read_flag_mask = 0xc0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .cache_type = REGCACHE_RBTREE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static int hmc5843_spi_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) const struct spi_device_id *id = spi_get_device_id(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) spi->mode = SPI_MODE_3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) spi->max_speed_hz = 8000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) spi->bits_per_word = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) ret = spi_setup(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) regmap = devm_regmap_init_spi(spi, &hmc5843_spi_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (IS_ERR(regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return hmc5843_common_probe(&spi->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) id->driver_data, id->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static int hmc5843_spi_remove(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return hmc5843_common_remove(&spi->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static const struct spi_device_id hmc5843_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) { "hmc5983", HMC5983_ID },
^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) MODULE_DEVICE_TABLE(spi, hmc5843_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static struct spi_driver hmc5843_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .name = "hmc5843",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .pm = HMC5843_PM_OPS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .id_table = hmc5843_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .probe = hmc5843_spi_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .remove = hmc5843_spi_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) module_spi_driver(hmc5843_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_DESCRIPTION("HMC5983 SPI driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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