69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
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/*
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* STMicroelectronics uvis25 spi driver
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*
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* Copyright 2017 STMicroelectronics Inc.
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*
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* Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
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*
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* Licensed under the GPL-2.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/spi/spi.h>
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#include <linux/slab.h>
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#include <linux/regmap.h>
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#include "st_uvis25.h"
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#define UVIS25_SENSORS_SPI_READ BIT(7)
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#define UVIS25_SPI_AUTO_INCREMENT BIT(6)
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static const struct regmap_config st_uvis25_spi_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.read_flag_mask = UVIS25_SENSORS_SPI_READ | UVIS25_SPI_AUTO_INCREMENT,
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.write_flag_mask = UVIS25_SPI_AUTO_INCREMENT,
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};
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static int st_uvis25_spi_probe(struct spi_device *spi)
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{
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struct regmap *regmap;
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regmap = devm_regmap_init_spi(spi, &st_uvis25_spi_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&spi->dev, "Failed to register spi regmap %d\n",
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(int)PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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return st_uvis25_probe(&spi->dev, spi->irq, regmap);
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}
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static const struct of_device_id st_uvis25_spi_of_match[] = {
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{ .compatible = "st,uvis25", },
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{},
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};
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MODULE_DEVICE_TABLE(of, st_uvis25_spi_of_match);
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static const struct spi_device_id st_uvis25_spi_id_table[] = {
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{ ST_UVIS25_DEV_NAME },
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{},
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};
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MODULE_DEVICE_TABLE(spi, st_uvis25_spi_id_table);
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static struct spi_driver st_uvis25_driver = {
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.driver = {
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.name = "st_uvis25_spi",
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.pm = &st_uvis25_pm_ops,
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.of_match_table = of_match_ptr(st_uvis25_spi_of_match),
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},
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.probe = st_uvis25_spi_probe,
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.id_table = st_uvis25_spi_id_table,
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};
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module_spi_driver(st_uvis25_driver);
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MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
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MODULE_DESCRIPTION("STMicroelectronics uvis25 spi driver");
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MODULE_LICENSE("GPL v2");
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