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iio: health: max30102: Add check for part ID
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Acked-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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@ -32,6 +32,7 @@
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#define MAX30102_REGMAP_NAME "max30102_regmap"
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#define MAX30102_DRV_NAME "max30102"
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#define MAX30102_PART_NUMBER 0x15
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#define MAX30102_REG_INT_STATUS 0x00
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#define MAX30102_REG_INT_STATUS_PWR_RDY BIT(0)
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@ -83,6 +84,9 @@
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#define MAX30102_REG_TEMP_INTEGER 0x1f
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#define MAX30102_REG_TEMP_FRACTION 0x20
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#define MAX30102_REG_REV_ID 0xfe
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#define MAX30102_REG_PART_ID 0xff
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struct max30102_data {
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struct i2c_client *client;
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struct iio_dev *indio_dev;
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@ -391,6 +395,7 @@ static int max30102_probe(struct i2c_client *client,
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struct iio_buffer *buffer;
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struct iio_dev *indio_dev;
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int ret;
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unsigned int reg;
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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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@ -424,6 +429,19 @@ static int max30102_probe(struct i2c_client *client,
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return PTR_ERR(data->regmap);
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}
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/* check part ID */
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ret = regmap_read(data->regmap, MAX30102_REG_PART_ID, ®);
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if (ret)
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return ret;
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if (reg != MAX30102_PART_NUMBER)
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return -ENODEV;
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/* show revision ID */
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ret = regmap_read(data->regmap, MAX30102_REG_REV_ID, ®);
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if (ret)
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return ret;
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dev_dbg(&client->dev, "max3010x revision %02x\n", reg);
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ret = max30102_set_powermode(data, false);
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if (ret)
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return ret;
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