iio/pressure/mprls0025pa_i2c.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * MPRLS0025PA - Honeywell MicroPressure pressure sensor series driver
5  * Copyright (c) Andreas Klinger <ak@it-klinger.de>
8 …-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/bo…
25 static int mpr_i2c_read(struct mpr_data *data, const u8 unused, const u8 cnt)  in mpr_i2c_read()  argument
28 	struct i2c_client *client = to_i2c_client(data->dev);  in mpr_i2c_read()
30 	if (cnt > MPR_MEASUREMENT_RD_SIZE)  in mpr_i2c_read()
31 		return -EOVERFLOW;  in mpr_i2c_read()
33 	memset(data->buffer, 0, MPR_MEASUREMENT_RD_SIZE);  in mpr_i2c_read()
34 	ret = i2c_master_recv(client, data->buffer, cnt);  in mpr_i2c_read()
37 	else if (ret != cnt)  in mpr_i2c_read()
38 		return -EIO;  in mpr_i2c_read()
43 static int mpr_i2c_write(struct mpr_data *data, const u8 cmd, const u8 unused)  in mpr_i2c_write()  argument
46 	struct i2c_client *client = to_i2c_client(data->dev);  in mpr_i2c_write()
50 	wdata[0] = cmd;  in mpr_i2c_write()
56 		return -EIO;  in mpr_i2c_write()
69 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE))  in mpr_i2c_probe()
70 		return -EOPNOTSUPP;  in mpr_i2c_probe()
72 	return mpr_common_probe(&client->dev, &mpr_i2c_ops, client->irq);  in mpr_i2c_probe()
91 		.name = "mprls0025pa",
97 MODULE_AUTHOR("Andreas Klinger <ak@it-klinger.de>");