1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * ADXL355 3-Axis Digital Accelerometer SPI driver |
4 | * |
5 | * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com> |
6 | */ |
7 | |
8 | #include <linux/module.h> |
9 | #include <linux/mod_devicetable.h> |
10 | #include <linux/regmap.h> |
11 | #include <linux/spi/spi.h> |
12 | #include <linux/property.h> |
13 | |
14 | #include "adxl355.h" |
15 | |
16 | static const struct regmap_config adxl355_spi_regmap_config = { |
17 | .reg_bits = 7, |
18 | .pad_bits = 1, |
19 | .val_bits = 8, |
20 | .read_flag_mask = BIT(0), |
21 | .max_register = 0x2F, |
22 | .rd_table = &adxl355_readable_regs_tbl, |
23 | .wr_table = &adxl355_writeable_regs_tbl, |
24 | }; |
25 | |
26 | static int adxl355_spi_probe(struct spi_device *spi) |
27 | { |
28 | const struct adxl355_chip_info *chip_data; |
29 | struct regmap *regmap; |
30 | |
31 | chip_data = device_get_match_data(dev: &spi->dev); |
32 | if (!chip_data) { |
33 | chip_data = (void *)spi_get_device_id(sdev: spi)->driver_data; |
34 | |
35 | if (!chip_data) |
36 | return -EINVAL; |
37 | } |
38 | |
39 | regmap = devm_regmap_init_spi(spi, &adxl355_spi_regmap_config); |
40 | if (IS_ERR(ptr: regmap)) { |
41 | dev_err(&spi->dev, "Error initializing spi regmap: %ld\n" , |
42 | PTR_ERR(regmap)); |
43 | |
44 | return PTR_ERR(ptr: regmap); |
45 | } |
46 | |
47 | return adxl355_core_probe(dev: &spi->dev, regmap, chip_info: chip_data); |
48 | } |
49 | |
50 | static const struct spi_device_id adxl355_spi_id[] = { |
51 | { "adxl355" , (kernel_ulong_t)&adxl35x_chip_info[ADXL355] }, |
52 | { "adxl359" , (kernel_ulong_t)&adxl35x_chip_info[ADXL359] }, |
53 | { } |
54 | }; |
55 | MODULE_DEVICE_TABLE(spi, adxl355_spi_id); |
56 | |
57 | static const struct of_device_id adxl355_of_match[] = { |
58 | { .compatible = "adi,adxl355" , .data = &adxl35x_chip_info[ADXL355] }, |
59 | { .compatible = "adi,adxl359" , .data = &adxl35x_chip_info[ADXL359] }, |
60 | { } |
61 | }; |
62 | MODULE_DEVICE_TABLE(of, adxl355_of_match); |
63 | |
64 | static struct spi_driver adxl355_spi_driver = { |
65 | .driver = { |
66 | .name = "adxl355_spi" , |
67 | .of_match_table = adxl355_of_match, |
68 | }, |
69 | .probe = adxl355_spi_probe, |
70 | .id_table = adxl355_spi_id, |
71 | }; |
72 | module_spi_driver(adxl355_spi_driver); |
73 | |
74 | MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>" ); |
75 | MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer SPI driver" ); |
76 | MODULE_LICENSE("GPL v2" ); |
77 | MODULE_IMPORT_NS(IIO_ADXL355); |
78 | |