Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
iio: proximity: vl53l0x-i2c: Added sensor ID check
The commit adds a check for the sensor's model ID. We read the model
identification register (0xC0) and expect a value of 0xEE.
Signed-off-by: Abhash Jha <abhashkumarjha123@gmail.com>
Link: https://patch.msgid.link/20240909101508.263085-2-abhashkumarjha123@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
authored by
Abhash Jha
and committed by
Jonathan Cameron
962b48d4
3ea51548
+11
-2
+11
-2
drivers/iio/proximity/vl53l0x-i2c.c
+11
-2
drivers/iio/proximity/vl53l0x-i2c.c
···
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#define VL_REG_RESULT_INT_STATUS 0x13
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#define VL_REG_RESULT_RANGE_STATUS 0x14
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#define VL_REG_IDENTIFICATION_MODEL_ID 0xC0
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#define VL_REG_RESULT_RANGE_STATUS_COMPLETE BIT(0)
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#define VL53L0X_MODEL_ID_VAL 0xEE
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struct vl53l0x_data {
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struct i2c_client *client;
···
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struct vl53l0x_data *data;
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struct iio_dev *indio_dev;
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int error;
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int ret;
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indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
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if (!indio_dev)
···
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I2C_FUNC_SMBUS_READ_I2C_BLOCK |
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I2C_FUNC_SMBUS_BYTE_DATA))
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return -EOPNOTSUPP;
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ret = i2c_smbus_read_byte_data(data->client, VL_REG_IDENTIFICATION_MODEL_ID);
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if (ret < 0)
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return -EINVAL;
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if (ret != VL53L0X_MODEL_ID_VAL)
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dev_info(&client->dev, "Unknown model id: 0x%x", ret);
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data->vdd_supply = devm_regulator_get(&client->dev, "vdd");
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if (IS_ERR(data->vdd_supply))
···
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/* usage of interrupt is optional */
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if (client->irq) {
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int ret;
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init_completion(&data->completion);
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ret = vl53l0x_configure_irq(client, indio_dev);