Improve sample gpio-pci-idio-16 emulation #821
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Newer kernels implement read register caching for the gpio-pci-idio-16 which means that the pin counter is never incremented, making it impossible to change the input register for testing. Improve the gpio-pci-idio-16 emulation so that the input and output registers match those of the real hardware, and update the logic so that toggling an output line 3 times will toggle the corresponding input line to allow testing individual inputs and outputs. Signed-off-by: Mark Cave-Ayland <[email protected]>
tmakatos
approved these changes
Oct 21, 2025
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Newer kernels implement read register caching for the gpio-pci-idio-16 which means that the pin counter is never incremented, making it impossible to change the input register for testing.
Improve the gpio-pci-idio-16 emulation so that the input and output registers match those of the real hardware, and update the logic so that toggling an output line 3 times will toggle the corresponding input line to allow testing individual inputs and outputs.