From e54def4ad8144ab15f826416e2e0f290ef1901b4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 19 Jun 2024 23:00:30 +0200 Subject: Adding upstream version 6.9.2. Signed-off-by: Daniel Baumann --- drivers/iio/pressure/mprls0025pa_i2c.c | 100 +++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 drivers/iio/pressure/mprls0025pa_i2c.c (limited to 'drivers/iio/pressure/mprls0025pa_i2c.c') diff --git a/drivers/iio/pressure/mprls0025pa_i2c.c b/drivers/iio/pressure/mprls0025pa_i2c.c new file mode 100644 index 0000000000..7a5c5aa2b4 --- /dev/null +++ b/drivers/iio/pressure/mprls0025pa_i2c.c @@ -0,0 +1,100 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MPRLS0025PA - Honeywell MicroPressure pressure sensor series driver + * + * Copyright (c) Andreas Klinger + * + * Data sheet: + * https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/micropressure-mpr-series/documents/sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf + */ + +#include +#include +#include +#include +#include +#include + +#include "mprls0025pa.h" + +static int mpr_i2c_init(struct device *unused) +{ + return 0; +} + +static int mpr_i2c_read(struct mpr_data *data, const u8 unused, const u8 cnt) +{ + int ret; + struct i2c_client *client = to_i2c_client(data->dev); + + if (cnt > MPR_MEASUREMENT_RD_SIZE) + return -EOVERFLOW; + + memset(data->buffer, 0, MPR_MEASUREMENT_RD_SIZE); + ret = i2c_master_recv(client, data->buffer, cnt); + if (ret < 0) + return ret; + else if (ret != cnt) + return -EIO; + + return 0; +} + +static int mpr_i2c_write(struct mpr_data *data, const u8 cmd, const u8 unused) +{ + int ret; + struct i2c_client *client = to_i2c_client(data->dev); + u8 wdata[MPR_PKT_SYNC_LEN]; + + memset(wdata, 0, sizeof(wdata)); + wdata[0] = cmd; + + ret = i2c_master_send(client, wdata, MPR_PKT_SYNC_LEN); + if (ret < 0) + return ret; + else if (ret != MPR_PKT_SYNC_LEN) + return -EIO; + + return 0; +} + +static const struct mpr_ops mpr_i2c_ops = { + .init = mpr_i2c_init, + .read = mpr_i2c_read, + .write = mpr_i2c_write, +}; + +static int mpr_i2c_probe(struct i2c_client *client) +{ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE)) + return -EOPNOTSUPP; + + return mpr_common_probe(&client->dev, &mpr_i2c_ops, client->irq); +} + +static const struct of_device_id mpr_i2c_match[] = { + { .compatible = "honeywell,mprls0025pa" }, + {} +}; +MODULE_DEVICE_TABLE(of, mpr_i2c_match); + +static const struct i2c_device_id mpr_i2c_id[] = { + { "mprls0025pa" }, + {} +}; +MODULE_DEVICE_TABLE(i2c, mpr_i2c_id); + +static struct i2c_driver mpr_i2c_driver = { + .probe = mpr_i2c_probe, + .id_table = mpr_i2c_id, + .driver = { + .name = "mprls0025pa", + .of_match_table = mpr_i2c_match, + }, +}; +module_i2c_driver(mpr_i2c_driver); + +MODULE_AUTHOR("Andreas Klinger "); +MODULE_DESCRIPTION("Honeywell MPR pressure sensor i2c driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(IIO_HONEYWELL_MPRLS0025PA); -- cgit v1.2.3