70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
// 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 %ld\n",
|
|
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 = pm_sleep_ptr(&hts221_pm_ops),
|
|
.of_match_table = 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");
|
|
MODULE_IMPORT_NS(IIO_HTS221);
|