From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/iio/magnetometer/hmc5843_spi.c | 103 +++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 drivers/iio/magnetometer/hmc5843_spi.c (limited to 'drivers/iio/magnetometer/hmc5843_spi.c') diff --git a/drivers/iio/magnetometer/hmc5843_spi.c b/drivers/iio/magnetometer/hmc5843_spi.c new file mode 100644 index 000000000..c42d2e2a6 --- /dev/null +++ b/drivers/iio/magnetometer/hmc5843_spi.c @@ -0,0 +1,103 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * SPI driver for hmc5983 + * + * Copyright (C) Josef Gajdusek + */ + +#include +#include +#include + +#include "hmc5843.h" + +static const struct regmap_range hmc5843_readable_ranges[] = { + regmap_reg_range(0, HMC5843_ID_END), +}; + +static const struct regmap_access_table hmc5843_readable_table = { + .yes_ranges = hmc5843_readable_ranges, + .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges), +}; + +static const struct regmap_range hmc5843_writable_ranges[] = { + regmap_reg_range(0, HMC5843_MODE_REG), +}; + +static const struct regmap_access_table hmc5843_writable_table = { + .yes_ranges = hmc5843_writable_ranges, + .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges), +}; + +static const struct regmap_range hmc5843_volatile_ranges[] = { + regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG), +}; + +static const struct regmap_access_table hmc5843_volatile_table = { + .yes_ranges = hmc5843_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges), +}; + +static const struct regmap_config hmc5843_spi_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .rd_table = &hmc5843_readable_table, + .wr_table = &hmc5843_writable_table, + .volatile_table = &hmc5843_volatile_table, + + /* Autoincrement address pointer */ + .read_flag_mask = 0xc0, + + .cache_type = REGCACHE_RBTREE, +}; + +static int hmc5843_spi_probe(struct spi_device *spi) +{ + int ret; + struct regmap *regmap; + const struct spi_device_id *id = spi_get_device_id(spi); + + spi->mode = SPI_MODE_3; + spi->max_speed_hz = 8000000; + spi->bits_per_word = 8; + ret = spi_setup(spi); + if (ret) + return ret; + + regmap = devm_regmap_init_spi(spi, &hmc5843_spi_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return hmc5843_common_probe(&spi->dev, + regmap, + id->driver_data, id->name); +} + +static void hmc5843_spi_remove(struct spi_device *spi) +{ + hmc5843_common_remove(&spi->dev); +} + +static const struct spi_device_id hmc5843_id[] = { + { "hmc5983", HMC5983_ID }, + { } +}; +MODULE_DEVICE_TABLE(spi, hmc5843_id); + +static struct spi_driver hmc5843_driver = { + .driver = { + .name = "hmc5843", + .pm = pm_sleep_ptr(&hmc5843_pm_ops), + }, + .id_table = hmc5843_id, + .probe = hmc5843_spi_probe, + .remove = hmc5843_spi_remove, +}; + +module_spi_driver(hmc5843_driver); + +MODULE_AUTHOR("Josef Gajdusek "); +MODULE_DESCRIPTION("HMC5983 SPI driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(IIO_HMC5843); -- cgit v1.2.3