![Lorenzo Bianconi](/assets/img/avatar_default.png)
Introduce regmap API support to access to i2c/spi bus instead of using a custom support. Remove lock mutex since concurrency is already managed by regmap API Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/*
|
|
* STMicroelectronics hts221 i2c driver
|
|
*
|
|
* Copyright 2016 STMicroelectronics Inc.
|
|
*
|
|
* Lorenzo Bianconi <lorenzo.bianconi@st.com>
|
|
*
|
|
* Licensed under the GPL-2.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#include "hts221.h"
|
|
|
|
#define HTS221_I2C_AUTO_INCREMENT BIT(7)
|
|
|
|
static const struct regmap_config hts221_i2c_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
|
|
.read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
|
|
};
|
|
|
|
static int hts221_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct regmap *regmap;
|
|
|
|
regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
|
|
if (IS_ERR(regmap)) {
|
|
dev_err(&client->dev, "Failed to register i2c regmap %d\n",
|
|
(int)PTR_ERR(regmap));
|
|
return PTR_ERR(regmap);
|
|
}
|
|
|
|
return hts221_probe(&client->dev, client->irq,
|
|
client->name, regmap);
|
|
}
|
|
|
|
static const struct acpi_device_id hts221_acpi_match[] = {
|
|
{"SMO9100", 0},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, hts221_acpi_match);
|
|
|
|
static const struct of_device_id hts221_i2c_of_match[] = {
|
|
{ .compatible = "st,hts221", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, hts221_i2c_of_match);
|
|
|
|
static const struct i2c_device_id hts221_i2c_id_table[] = {
|
|
{ HTS221_DEV_NAME },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);
|
|
|
|
static struct i2c_driver hts221_driver = {
|
|
.driver = {
|
|
.name = "hts221_i2c",
|
|
.pm = &hts221_pm_ops,
|
|
.of_match_table = of_match_ptr(hts221_i2c_of_match),
|
|
.acpi_match_table = ACPI_PTR(hts221_acpi_match),
|
|
},
|
|
.probe = hts221_i2c_probe,
|
|
.id_table = hts221_i2c_id_table,
|
|
};
|
|
module_i2c_driver(hts221_driver);
|
|
|
|
MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
|
|
MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
|
|
MODULE_LICENSE("GPL v2");
|