70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* STMicroelectronics hts221 spi driver
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*
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* Copyright 2016 STMicroelectronics Inc.
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*
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* Lorenzo Bianconi <lorenzo.bianconi@st.com>
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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 "hts221.h"
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#define HTS221_SPI_READ BIT(7)
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#define HTS221_SPI_AUTO_INCREMENT BIT(6)
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static const struct regmap_config hts221_spi_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.write_flag_mask = HTS221_SPI_AUTO_INCREMENT,
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.read_flag_mask = HTS221_SPI_READ | HTS221_SPI_AUTO_INCREMENT,
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};
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static int hts221_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, &hts221_spi_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&spi->dev, "Failed to register spi regmap %ld\n",
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PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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return hts221_probe(&spi->dev, spi->irq,
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spi->modalias, regmap);
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}
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static const struct of_device_id hts221_spi_of_match[] = {
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{ .compatible = "st,hts221", },
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{},
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};
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MODULE_DEVICE_TABLE(of, hts221_spi_of_match);
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static const struct spi_device_id hts221_spi_id_table[] = {
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{ HTS221_DEV_NAME },
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{},
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};
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MODULE_DEVICE_TABLE(spi, hts221_spi_id_table);
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static struct spi_driver hts221_driver = {
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.driver = {
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.name = "hts221_spi",
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.pm = pm_sleep_ptr(&hts221_pm_ops),
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.of_match_table = hts221_spi_of_match,
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},
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.probe = hts221_spi_probe,
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.id_table = hts221_spi_id_table,
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};
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module_spi_driver(hts221_driver);
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MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics hts221 spi driver");
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MODULE_LICENSE("GPL v2");
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MODULE_IMPORT_NS(IIO_HTS221);
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