Interfacing MZTX06A 2.2" TFT Screen on Raspberry Pi

I recently bought a 2.2" TFT screen with SPI interface and 320x240 pixel resolution on Deal Extreme.
According to the very rudimentary documentation it needs to be connected like this :

lcd pin	lcd name	Rpi pin	Rpi name
1	LED+	1	3.3V
2	VDD-	17	3.3V
3	/RST-	22	GPIO25
4	RS-	21	MISO
5	/CS-	26
6	SCI-	19	MOSI
7	SCL-	23	SCLK
8	GND	25	GND

After getting the MZTX06A software from github :

 https://github.com/yaolet/mztx06a.git

and launching the makefile, the resulting MZTX06A executable copies the /dev/fb content to the screen. Here below the result when launched directly from rc.local ...

In order to match framebuffer and screen resolution, one has to modify /boot/config.txt and uncomment the lines with Horizontal and vertical screen resolution. Please use 320 and 240 in order to avoid blurred screens.

This method works flawlessly with X. Just startx and watch. Unfortunately 320x240 pixels doesn't leave much space for actual work. Most user interfaces are not suited for low-res.