Commit | Line | Data |
---|---|---|
d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
d3f16219 JG |
2 | /* |
3 | * SPI driver for hmc5983 | |
4 | * | |
5 | * Copyright (C) Josef Gajdusek <atx@atx.name> | |
4630adb8 | 6 | */ |
d3f16219 JG |
7 | |
8 | #include <linux/module.h> | |
9 | #include <linux/spi/spi.h> | |
10 | #include <linux/iio/iio.h> | |
11 | ||
12 | #include "hmc5843.h" | |
13 | ||
14 | static const struct regmap_range hmc5843_readable_ranges[] = { | |
15 | regmap_reg_range(0, HMC5843_ID_END), | |
16 | }; | |
17 | ||
15313309 | 18 | static const struct regmap_access_table hmc5843_readable_table = { |
d3f16219 JG |
19 | .yes_ranges = hmc5843_readable_ranges, |
20 | .n_yes_ranges = ARRAY_SIZE(hmc5843_readable_ranges), | |
21 | }; | |
22 | ||
23 | static const struct regmap_range hmc5843_writable_ranges[] = { | |
24 | regmap_reg_range(0, HMC5843_MODE_REG), | |
25 | }; | |
26 | ||
15313309 | 27 | static const struct regmap_access_table hmc5843_writable_table = { |
d3f16219 JG |
28 | .yes_ranges = hmc5843_writable_ranges, |
29 | .n_yes_ranges = ARRAY_SIZE(hmc5843_writable_ranges), | |
30 | }; | |
31 | ||
32 | static const struct regmap_range hmc5843_volatile_ranges[] = { | |
33 | regmap_reg_range(HMC5843_DATA_OUT_MSB_REGS, HMC5843_STATUS_REG), | |
34 | }; | |
35 | ||
15313309 | 36 | static const struct regmap_access_table hmc5843_volatile_table = { |
d3f16219 JG |
37 | .yes_ranges = hmc5843_volatile_ranges, |
38 | .n_yes_ranges = ARRAY_SIZE(hmc5843_volatile_ranges), | |
39 | }; | |
40 | ||
15313309 | 41 | static const struct regmap_config hmc5843_spi_regmap_config = { |
d3f16219 JG |
42 | .reg_bits = 8, |
43 | .val_bits = 8, | |
44 | ||
45 | .rd_table = &hmc5843_readable_table, | |
46 | .wr_table = &hmc5843_writable_table, | |
47 | .volatile_table = &hmc5843_volatile_table, | |
48 | ||
49 | /* Autoincrement address pointer */ | |
50 | .read_flag_mask = 0xc0, | |
51 | ||
52 | .cache_type = REGCACHE_RBTREE, | |
53 | }; | |
54 | ||
55 | static int hmc5843_spi_probe(struct spi_device *spi) | |
56 | { | |
57 | int ret; | |
536cc27d | 58 | struct regmap *regmap; |
70b2737e | 59 | const struct spi_device_id *id = spi_get_device_id(spi); |
d3f16219 JG |
60 | |
61 | spi->mode = SPI_MODE_3; | |
62 | spi->max_speed_hz = 8000000; | |
63 | spi->bits_per_word = 8; | |
64 | ret = spi_setup(spi); | |
65 | if (ret) | |
66 | return ret; | |
67 | ||
536cc27d KL |
68 | regmap = devm_regmap_init_spi(spi, &hmc5843_spi_regmap_config); |
69 | if (IS_ERR(regmap)) | |
70 | return PTR_ERR(regmap); | |
71 | ||
d3f16219 | 72 | return hmc5843_common_probe(&spi->dev, |
536cc27d | 73 | regmap, |
70b2737e | 74 | id->driver_data, id->name); |
d3f16219 JG |
75 | } |
76 | ||
a0386bba | 77 | static void hmc5843_spi_remove(struct spi_device *spi) |
d3f16219 | 78 | { |
4b6fb9f3 | 79 | hmc5843_common_remove(&spi->dev); |
d3f16219 JG |
80 | } |
81 | ||
82 | static const struct spi_device_id hmc5843_id[] = { | |
83 | { "hmc5983", HMC5983_ID }, | |
84 | { } | |
85 | }; | |
45ef12b6 | 86 | MODULE_DEVICE_TABLE(spi, hmc5843_id); |
d3f16219 JG |
87 | |
88 | static struct spi_driver hmc5843_driver = { | |
c3b4afb1 JC |
89 | .driver = { |
90 | .name = "hmc5843", | |
71041f73 | 91 | .pm = pm_sleep_ptr(&hmc5843_pm_ops), |
c3b4afb1 JC |
92 | }, |
93 | .id_table = hmc5843_id, | |
94 | .probe = hmc5843_spi_probe, | |
95 | .remove = hmc5843_spi_remove, | |
d3f16219 JG |
96 | }; |
97 | ||
98 | module_spi_driver(hmc5843_driver); | |
99 | ||
100 | MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>"); | |
101 | MODULE_DESCRIPTION("HMC5983 SPI driver"); | |
102 | MODULE_LICENSE("GPL"); | |
7e615caf | 103 | MODULE_IMPORT_NS(IIO_HMC5843); |