1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * STMicroelectronics uvis25 spi driver
 4 *
 5 * Copyright 2017 STMicroelectronics Inc.
 6 *
 7 * Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
 8 */
 9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/mod_devicetable.h>
13#include <linux/spi/spi.h>
14#include <linux/slab.h>
15#include <linux/regmap.h>
16
17#include "st_uvis25.h"
18
19#define UVIS25_SENSORS_SPI_READ		BIT(7)
20#define UVIS25_SPI_AUTO_INCREMENT	BIT(6)
21
22static const struct regmap_config st_uvis25_spi_regmap_config = {
23	.reg_bits = 8,
24	.val_bits = 8,
25	.read_flag_mask = UVIS25_SENSORS_SPI_READ | UVIS25_SPI_AUTO_INCREMENT,
26	.write_flag_mask = UVIS25_SPI_AUTO_INCREMENT,
27};
28
29static int st_uvis25_spi_probe(struct spi_device *spi)
30{
31	struct regmap *regmap;
32
33	regmap = devm_regmap_init_spi(spi, &st_uvis25_spi_regmap_config);
34	if (IS_ERR(regmap)) {
35		dev_err(&spi->dev, "Failed to register spi regmap %ld\n",
36			PTR_ERR(regmap));
37		return PTR_ERR(regmap);
38	}
39
40	return st_uvis25_probe(&spi->dev, spi->irq, regmap);
41}
42
43static const struct of_device_id st_uvis25_spi_of_match[] = {
44	{ .compatible = "st,uvis25", },
45	{},
46};
47MODULE_DEVICE_TABLE(of, st_uvis25_spi_of_match);
48
49static const struct spi_device_id st_uvis25_spi_id_table[] = {
50	{ ST_UVIS25_DEV_NAME },
51	{},
52};
53MODULE_DEVICE_TABLE(spi, st_uvis25_spi_id_table);
54
55static struct spi_driver st_uvis25_driver = {
56	.driver = {
57		.name = "st_uvis25_spi",
58		.pm = &st_uvis25_pm_ops,
59		.of_match_table = st_uvis25_spi_of_match,
60	},
61	.probe = st_uvis25_spi_probe,
62	.id_table = st_uvis25_spi_id_table,
63};
64module_spi_driver(st_uvis25_driver);
65
66MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
67MODULE_DESCRIPTION("STMicroelectronics uvis25 spi driver");
68MODULE_LICENSE("GPL v2");