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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * STMicroelectronics hts221 spi driver4 *5 * Copyright 2016 STMicroelectronics Inc.6 *7 * Lorenzo Bianconi <lorenzo.bianconi@st.com>8 */9 10#include <linux/kernel.h>11#include <linux/module.h>12#include <linux/spi/spi.h>13#include <linux/slab.h>14#include <linux/regmap.h>15 16#include "hts221.h"17 18#define HTS221_SPI_READ BIT(7)19#define HTS221_SPI_AUTO_INCREMENT BIT(6)20 21static const struct regmap_config hts221_spi_regmap_config = {22 .reg_bits = 8,23 .val_bits = 8,24 .write_flag_mask = HTS221_SPI_AUTO_INCREMENT,25 .read_flag_mask = HTS221_SPI_READ | HTS221_SPI_AUTO_INCREMENT,26};27 28static int hts221_spi_probe(struct spi_device *spi)29{30 struct regmap *regmap;31 32 regmap = devm_regmap_init_spi(spi, &hts221_spi_regmap_config);33 if (IS_ERR(regmap)) {34 dev_err(&spi->dev, "Failed to register spi regmap %ld\n",35 PTR_ERR(regmap));36 return PTR_ERR(regmap);37 }38 39 return hts221_probe(&spi->dev, spi->irq,40 spi->modalias, regmap);41}42 43static const struct of_device_id hts221_spi_of_match[] = {44 { .compatible = "st,hts221", },45 {},46};47MODULE_DEVICE_TABLE(of, hts221_spi_of_match);48 49static const struct spi_device_id hts221_spi_id_table[] = {50 { HTS221_DEV_NAME },51 {},52};53MODULE_DEVICE_TABLE(spi, hts221_spi_id_table);54 55static struct spi_driver hts221_driver = {56 .driver = {57 .name = "hts221_spi",58 .pm = pm_sleep_ptr(&hts221_pm_ops),59 .of_match_table = hts221_spi_of_match,60 },61 .probe = hts221_spi_probe,62 .id_table = hts221_spi_id_table,63};64module_spi_driver(hts221_driver);65 66MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");67MODULE_DESCRIPTION("STMicroelectronics hts221 spi driver");68MODULE_LICENSE("GPL v2");69MODULE_IMPORT_NS(IIO_HTS221);70