| /* |
| * SPI driver for hmc5983 |
| * |
| * Copyright (C) Josef Gajdusek <atx@atx.name> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * */ |
| |
| #include <linux/module.h> |
| #include <linux/spi/spi.h> |
| #include <linux/iio/iio.h> |
| |
| #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; |
| 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; |
| |
| return hmc5843_common_probe(&spi->dev, |
| devm_regmap_init_spi(spi, &hmc5843_spi_regmap_config), |
| id->driver_data, id->name); |
| } |
| |
| static int hmc5843_spi_remove(struct spi_device *spi) |
| { |
| return 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 = HMC5843_PM_OPS, |
| }, |
| .id_table = hmc5843_id, |
| .probe = hmc5843_spi_probe, |
| .remove = hmc5843_spi_remove, |
| }; |
| |
| module_spi_driver(hmc5843_driver); |
| |
| MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>"); |
| MODULE_DESCRIPTION("HMC5983 SPI driver"); |
| MODULE_LICENSE("GPL"); |