Hi,
Here is a patch, that provides support for the MSTAR ISP protocol.
Basically, among other chips, MSTAR manufactures SoCs that equip TV sets and computer screens, and it seems that all of their products use the same in-system programming protocol. Basically, they use the DDC channel of VGA or DVI connectors, which is actually an I2C bus, to encapsulate SPI frames (the flash chip is connected to the SoC through an SPI bus).
I wrote this patch since the screen I bought had a software bug, and the manufacturer only released a new firmware binary, but no tool or instructions on flashing it.
More details can be found here: http://boeglin.org/blog/index.php?entry=Flashing-a-BenQ-Z-series-for-free(do...)
I only read code from Linux kernel archives published by Acer to figure out the protocol (for a touchscreen controller and a NFC chip, both by MSTAR, that shared the same ISP protocol), so I don't think there are any legal problems with it.
Please let me know what you think about this patch, and whether you're interested in including it.
Best regards, Alex