mincrmatt12
commented
2 years ago The sensors handled by this repository (and indeed the one that you have) utilize SPI, not I2C. It's the touchpad that's connected via I2C.
You need to add the sensor to the id_table in the elanspi driver which is now merged into upstream libfprint.
Based on the image you have (from which I'm guessing the sensor is rotated 90 degrees, you might need to experiment with the various rotation values) you'd need to try something like
diff --git a/libfprint/drivers/elanspi.h b/libfprint/drivers/elanspi.h
index ffe3416..986010e 100644
--- a/libfprint/drivers/elanspi.h
+++ b/libfprint/drivers/elanspi.h
@@ -348,6 +348,7 @@ static const FpIdEntry elanspi_id_table[] = {
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x30b2}, .driver_data = ELANSPI_NO_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN70A1", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x30b2}, .driver_data = ELANSPI_NO_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x309f}, .driver_data = ELANSPI_180_ROTATE},
+ {.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x241f}, .driver_data = ELANSPI_90RIGHT_ROTATE},
{.udev_types = 0}
};If that works, please report so on the actual libfprint issue tracker or create a merge request there so this device can be supported out of the box in the future.
so-saf
Successfully launched with TP_VID = 0x04F3, TP_PID = 0x241F, ACPI_HID = "ELAN7001". Images are obtained like this:
The problem is that my fingerprint scanner is an i2c device and libfprint does not see it because it is not in lsusb. Can you tell me what to do?
Just in case, here is the output of some commands: