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68 lines
1.6 KiB
68 lines
1.6 KiB
// 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 <[email protected]> |
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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 = &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 <[email protected]>"); |
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MODULE_DESCRIPTION("STMicroelectronics hts221 spi driver"); |
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MODULE_LICENSE("GPL v2");
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