tree 8210f5452bb94ba4225c958302ba954e126f643f
parent 6529b9fdc2340d7cfee198eea77f38424acaef86
author Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> 1280420649 +0000
committer Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> 1280420649 +0000

Speed up Bus Pirate by exploiting the FTDI FIFO

If we violate the raw SPI communication protocol requirements of the Bus
Pirate (namely, waiting for the completion of one command before sending
the next one), we can reduce the number of round trips by a factor of 3.
The FT2232 chip present in the Bus Pirate has a big enough buffer (at
least 128 bytes IIRC) to avoid overflows in the tiny buffer of the Bus
Pirate PIC.

Thanks to Daniel Flinkmann for sponsoring development of this patch.

Corresponding to flashrom svn r1120.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Tested-by: Daniel Flinkmann <DFlinkmann@gmx.de>
Acked-by: Daniel Flinkmann <dflinkmann@gmx.de>