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621779220b
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
/*
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* STMicroelectronics hts221 i2c driver
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*
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* Copyright 2016 STMicroelectronics Inc.
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*
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* Lorenzo Bianconi <lorenzo.bianconi@st.com>
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*
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* Licensed under the GPL-2.
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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/acpi.h>
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#include <linux/i2c.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_I2C_AUTO_INCREMENT BIT(7)
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static const struct regmap_config hts221_i2c_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.write_flag_mask = HTS221_I2C_AUTO_INCREMENT,
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.read_flag_mask = HTS221_I2C_AUTO_INCREMENT,
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};
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static int hts221_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct regmap *regmap;
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regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&client->dev, "Failed to register i2c regmap %d\n",
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(int)PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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return hts221_probe(&client->dev, client->irq,
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client->name, regmap);
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}
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static const struct acpi_device_id hts221_acpi_match[] = {
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{"SMO9100", 0},
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{ },
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};
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MODULE_DEVICE_TABLE(acpi, hts221_acpi_match);
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static const struct of_device_id hts221_i2c_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_i2c_of_match);
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static const struct i2c_device_id hts221_i2c_id_table[] = {
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{ HTS221_DEV_NAME },
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{},
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};
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MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);
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static struct i2c_driver hts221_driver = {
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.driver = {
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.name = "hts221_i2c",
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.pm = &hts221_pm_ops,
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.of_match_table = of_match_ptr(hts221_i2c_of_match),
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.acpi_match_table = ACPI_PTR(hts221_acpi_match),
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},
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.probe = hts221_i2c_probe,
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.id_table = hts221_i2c_id_table,
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};
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module_i2c_driver(hts221_driver);
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MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
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MODULE_LICENSE("GPL v2");
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