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CONFIG_HP_SDC: HP System Device Controller i8042 Support

General informations

The Linux kernel configuration item CONFIG_HP_SDC:

Help text

This option enables support for the "System Device Controller", an i8042 carrying microcode to manage a few miscellaneous devices on some Hewlett Packard systems. The SDC itself contains a 10ms resolution timer/clock capable of delivering interrupts on a periodic and one-shot basis. The SDC may also be connected to a battery-backed real-time clock, a basic audio waveform generator, and an HP-HIL Master Link Controller serving up to seven input devices.

By itself this option is rather useless, but enabling it will enable selection of drivers for the abovementioned devices. It is, however, incompatible with the old, reliable HIL keyboard driver, and the new HIL driver is experimental, so if you plan to use a HIL keyboard as your primary keyboard, you may wish to keep using that driver until the new HIL drivers have had more testing.

Hardware

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