Messages in this thread | | | Subject | Re: [PATCH] serial: DCC(JTAG) serial and console emulation support | From | Daniel Walker <> | Date | Thu, 07 Oct 2010 13:37:11 -0700 |
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On Thu, 2010-10-07 at 21:52 +0100, Alan Cox wrote: > On Thu, 7 Oct 2010 15:25:34 -0400 > Mike Frysinger <vapier@gentoo.org> wrote: > > > On Thu, Oct 7, 2010 at 14:36, Daniel Walker wrote: > > > Many of JTAG debuggers for ARM support DCC protocol over JTAG > > > connection, which is very useful to debug hardwares which has no > > > serial port. This patch adds DCC serial emulation and the console > > > support. System timer based polling method is used for the > > > emulation of serial input interrupt handling. > > > > why use serial_core at all ? seems like you could just use the tty > > layer directly. i did that with drivers/char/bfin_jtag_comm.c. > > I would agree 100% with this for the driver in question. The tty_port > helpers now make it trivial to do so and it'll be small and clean as a > result.
Can you give some example of other drivers which have done this?
Daniel
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