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102 lines
2.4 KiB
102 lines
2.4 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* SPI driver for hmc5983 |
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* |
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* Copyright (C) Josef Gajdusek <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/spi/spi.h> |
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#include <linux/iio/iio.h> |
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#include "hmc5843.h" |
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static const struct regmap_range hmc5843_readable_ranges[] = { |
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regmap_reg_range(0, HMC5843_ID_END), |
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}; |
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static const struct regmap_access_table hmc5843_readable_table = { |
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.yes_ranges = hmc5843_readable_ranges, |
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.n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges), |
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}; |
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static const struct regmap_range hmc5843_writable_ranges[] = { |
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regmap_reg_range(0, HMC5843_MODE_REG), |
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}; |
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static const struct regmap_access_table hmc5843_writable_table = { |
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.yes_ranges = hmc5843_writable_ranges, |
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.n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges), |
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}; |
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static const struct regmap_range hmc5843_volatile_ranges[] = { |
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regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG), |
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}; |
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static const struct regmap_access_table hmc5843_volatile_table = { |
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.yes_ranges = hmc5843_volatile_ranges, |
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.n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges), |
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}; |
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static const struct regmap_config hmc5843_spi_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.rd_table = &hmc5843_readable_table, |
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.wr_table = &hmc5843_writable_table, |
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.volatile_table = &hmc5843_volatile_table, |
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/* Autoincrement address pointer */ |
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.read_flag_mask = 0xc0, |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static int hmc5843_spi_probe(struct spi_device *spi) |
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{ |
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int ret; |
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struct regmap *regmap; |
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const struct spi_device_id *id = spi_get_device_id(spi); |
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spi->mode = SPI_MODE_3; |
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spi->max_speed_hz = 8000000; |
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spi->bits_per_word = 8; |
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ret = spi_setup(spi); |
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if (ret) |
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return ret; |
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regmap = devm_regmap_init_spi(spi, &hmc5843_spi_regmap_config); |
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if (IS_ERR(regmap)) |
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return PTR_ERR(regmap); |
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return hmc5843_common_probe(&spi->dev, |
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regmap, |
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id->driver_data, id->name); |
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} |
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static int hmc5843_spi_remove(struct spi_device *spi) |
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{ |
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return hmc5843_common_remove(&spi->dev); |
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} |
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static const struct spi_device_id hmc5843_id[] = { |
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{ "hmc5983", HMC5983_ID }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(spi, hmc5843_id); |
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static struct spi_driver hmc5843_driver = { |
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.driver = { |
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.name = "hmc5843", |
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.pm = HMC5843_PM_OPS, |
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}, |
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.id_table = hmc5843_id, |
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.probe = hmc5843_spi_probe, |
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.remove = hmc5843_spi_remove, |
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}; |
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module_spi_driver(hmc5843_driver); |
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MODULE_AUTHOR("Josef Gajdusek <[email protected]>"); |
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MODULE_DESCRIPTION("HMC5983 SPI driver"); |
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MODULE_LICENSE("GPL");
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