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