90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Honeywell ABP2 series pressure sensor driver
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*
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* Copyright (c) 2025 Petre Rodan <petre.rodan@subdimension.ro>
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*/
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include "abp2030pa.h"
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static int abp2_i2c_read(struct abp2_data *data, u8 unused, u8 nbytes)
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{
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struct i2c_client *client = to_i2c_client(data->dev);
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int ret;
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if (nbytes > ABP2_MEASUREMENT_RD_SIZE)
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return -EOVERFLOW;
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ret = i2c_master_recv(client, data->rx_buf, nbytes);
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if (ret < 0)
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return ret;
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if (ret != nbytes)
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return -EIO;
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return 0;
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}
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static int abp2_i2c_write(struct abp2_data *data, u8 cmd, u8 nbytes)
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{
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struct i2c_client *client = to_i2c_client(data->dev);
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int ret;
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if (nbytes > ABP2_MEASUREMENT_RD_SIZE)
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return -EOVERFLOW;
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data->tx_buf[0] = cmd;
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ret = i2c_master_send(client, data->tx_buf, nbytes);
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if (ret < 0)
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return ret;
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if (ret != nbytes)
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return -EIO;
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return 0;
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}
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static const struct abp2_ops abp2_i2c_ops = {
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.read = abp2_i2c_read,
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.write = abp2_i2c_write,
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};
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static int abp2_i2c_probe(struct i2c_client *client)
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{
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
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return -EOPNOTSUPP;
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return abp2_common_probe(&client->dev, &abp2_i2c_ops, client->irq);
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}
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static const struct of_device_id abp2_i2c_match[] = {
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{ .compatible = "honeywell,abp2030pa" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, abp2_i2c_match);
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static const struct i2c_device_id abp2_i2c_id[] = {
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{ .name = "abp2030pa" },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, abp2_i2c_id);
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static struct i2c_driver abp2_i2c_driver = {
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.driver = {
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.name = "abp2030pa",
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.of_match_table = abp2_i2c_match,
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},
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.probe = abp2_i2c_probe,
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.id_table = abp2_i2c_id,
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};
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module_i2c_driver(abp2_i2c_driver);
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MODULE_AUTHOR("Petre Rodan <petre.rodan@subdimension.ro>");
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MODULE_DESCRIPTION("Honeywell ABP2 pressure sensor i2c driver");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS("IIO_HONEYWELL_ABP2030PA");
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