Hi Hirata,
In really products, TSC2046E usually works with more powerful MCUs than MSP430, such as ARM9, ARM11 and Cortex A8. Personally, I tried connecting the TSC2046E with a Cortex M3 MCU via SPI for evaluation. Here are my comments to your two questions.
1) was TSC2046E connected with MSP430 through SPI interface?
Yes.
2) could you provide us with the software/driver? for MSP430 to enable flick input?
To enable flick, you have to implement a gesture engine, which is usually a protected IP. Do you have a real customer now?
Andy