On Mon, Mar 9, 2015 at 4:18 , Jonathan Cameron <jic23@xxxxxxxxxx> wrote:
On 25/02/15 15:55, Vianney le Clément de Saint-Marcq wrote:
The model is detected by reading the EEPROM configuration during
probing. In the dual IR sensor model, the ambient temperature is
exported twice to userspace. This makes the two channels appear
completely symmetrical.
Why do we want it to be symmetrical?
Well, except for the beauty of symmetry, I do not have any hard
argument, nor do I have any strong feelings about it :). I can leave
the duplicate out in v2.
Is there a part number difference for the dual sensor version? If so
we can still
autoprobe for it, but want to make sure we have it listed as a
supported part.
Nope. The only difference lies in the option code:
MLX90614ESF-BAA-000-TU is single-zone, while MLX90614ESF-BBA-000-TU is
dual (notice the second letter in the second group).
+/* Return 0 for single sensor, 1 for dual sensor, <0 on error. */
+static int mlx90614_probe_model(struct i2c_client *client)
I'd give this a more specific name. probe_num_ir_sensors or similar.
Will be changed in v2.
Vianney
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