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Robert Jarzmik authored
Rewrite the Altera USB Blaster dongle driver : - make extensive use of byte-shift mode, to improve JTAG speed. This is the main reason of the rewrite. It improves the memory dumps with a factor 3 at least, and upload 100 times, from 1 kBytes/sec to 100 kBytes/sec with a USB-Blaster connected to an Altera Virtual JTAG TAP + OpenRISC CPU. - split the low level API part (between FTDI and FTD2xx) from core driver, so that in the future, if both libftdi and ftd2xx can coexist, the driver will be able to switch dynamically from one access to the other. Change-Id: I2ee9cedf4a5eb27501f337993ee0cdee52517e7c Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Marek Czerski <ma.czerski@gmail.com> Tested-by: Franck Jullien <franck.jullien@gmail.com> Reviewed-on: http://openocd.zylin.com/467 Tested-by: jenkins Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com> Reviewed-by: Alexandre Becoulet <alexandre.becoulet@free.fr> Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
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