Kmdf Hid Minidriver For Touch I2c Device Calibration Best -

Always use fixed-point arithmetic in the kernel. Floating-point operations require saving/restoring FPU state, which is a performance killer in an ISR (Interrupt Service Routine) context.

Map your raw ADC (Analog-to-Digital Converter) values to the logical range defined in your HID Report Descriptor. Ensure your Logical Maximum and Physical Maximum are perfectly synchronized with the sensor's physical pitch. 3. Handling the I2C "Ghost Touch" Phenomenon kmdf hid minidriver for touch i2c device calibration best

If the hardware supports it, read the entire touch state (multiple fingers) in a single I2C burst read rather than multiple small transactions. Implementing the Calibration HID Feature Report Always use fixed-point arithmetic in the kernel