projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d3f16219 JG |
1 | /* |
| 2 | * SPI driver for hmc5983 | |
| 3 | * | |
| 4 | * Copyright (C) Josef Gajdusek <atx@atx.name> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | * | |
| 10 | * */ | |
| 11 | ||
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/spi/spi.h> | |
| 14 | #include <linux/iio/iio.h> | |
| 15 | ||
| 16 | #include "hmc5843.h" | |
| 17 | ||
| 18 | static const struct regmap_range hmc5843_readable_ranges[] = { | |
| 19 | regmap_reg_range(0, HMC5843_ID_END), | |
| 20 | }; | |
| 21 | ||
| 22 | static struct regmap_access_table hmc5843_readable_table = { | |
| 23 | .yes_ranges = hmc5843_readable_ranges, | |
| 24 | .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges), | |
| 25 | }; | |
| 26 | ||
| 27 | static const struct regmap_range hmc5843_writable_ranges[] = { | |
| 28 | regmap_reg_range(0, HMC5843_MODE_REG), | |
| 29 | }; | |
| 30 | ||
| 31 | static struct regmap_access_table hmc5843_writable_table = { | |
| 32 | .yes_ranges = hmc5843_writable_ranges, | |
| 33 | .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges), | |
| 34 | }; | |
| 35 | ||
| 36 | static const struct regmap_range hmc5843_volatile_ranges[] = { | |
| 37 | regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG), | |
| 38 | }; | |
| 39 | ||
| 40 | static struct regmap_access_table hmc5843_volatile_table = { | |
| 41 | .yes_ranges = hmc5843_volatile_ranges, | |
| 42 | .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges), | |
| 43 | }; | |
| 44 | ||
| 45 | static struct regmap_config hmc5843_spi_regmap_config = { | |
| 46 | .reg_bits = 8, | |
| 47 | .val_bits = 8, | |
| 48 | ||
| 49 | .rd_table = &hmc5843_readable_table, | |
| 50 | .wr_table = &hmc5843_writable_table, | |
| 51 | .volatile_table = &hmc5843_volatile_table, | |
| 52 | ||
| 53 | /* Autoincrement address pointer */ | |
| 54 | .read_flag_mask = 0xc0, | |
| 55 | ||
| 56 | .cache_type = REGCACHE_RBTREE, | |
| 57 | }; | |
| 58 | ||
| 59 | static int hmc5843_spi_probe(struct spi_device *spi) | |
| 60 | { | |
| 61 | int ret; | |
| 62 | ||
| 63 | spi->mode = SPI_MODE_3; | |
| 64 | spi->max_speed_hz = 8000000; | |
| 65 | spi->bits_per_word = 8; | |
| 66 | ret = spi_setup(spi); | |
| 67 | if (ret) | |
| 68 | return ret; | |
| 69 | ||
| 70 | return hmc5843_common_probe(&spi->dev, | |
| 71 | devm_regmap_init_spi(spi, &hmc5843_spi_regmap_config), | |
| 72 | HMC5983_ID); | |
| 73 | } | |
| 74 | ||
| 75 | static int hmc5843_spi_remove(struct spi_device *spi) | |
| 76 | { | |
| 77 | return hmc5843_common_remove(&spi->dev); | |
| 78 | } | |
| 79 | ||
| 80 | static const struct spi_device_id hmc5843_id[] = { | |
| 81 | { "hmc5983", HMC5983_ID }, | |
| 82 | { } | |
| 83 | }; | |
| 84 | ||
| 85 | static struct spi_driver hmc5843_driver = { | |
| 86 | .driver = { | |
| 87 | .name = "hmc5843", | |
| 88 | .pm = HMC5843_PM_OPS, | |
| 89 | .owner = THIS_MODULE, | |
| 90 | }, | |
| 91 | .id_table = hmc5843_id, | |
| 92 | .probe = hmc5843_spi_probe, | |
| 93 | .remove = hmc5843_spi_remove, | |
| 94 | }; | |
| 95 | ||
| 96 | module_spi_driver(hmc5843_driver); | |
| 97 | ||
| 98 | MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>"); | |
| 99 | MODULE_DESCRIPTION("HMC5983 SPI driver"); | |
| 100 | MODULE_LICENSE("GPL"); |