Commit Graph

4 Commits

Author SHA1 Message Date
Sonic Zhang 1f7d1c85df serial: bfin_sport_uart: add support for CTS/RTS via GPIOs
Some people need flow control on their ports, so now boards can support
that via any GPIOs.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-21 09:34:27 -07:00
Sonic Zhang a5a420d207 serial: bfin_sport_uart: work around anomaly 05000473 (make 32bit fifo read atomic)
We cannot let a 32-bit RX FIFO read be interrupted otherwise a fake RX
underflow error might be generated.

URL: http://blackfin.uclinux.org/gf/tracker/5145

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-21 09:34:27 -07:00
sonic zhang ccf68e59e9 serial: fit blackfin uart over sport driver into common uart infrastructure
Fit blackfin uart over sport driver into common uart inftrastructure.  It
is based on the early platform interfaces to get the platform data early
when the console is initilized.

1. Enable sport uart driver to change uart baud, data bit, stop bit at
   runtime.  Bind the index of uart device nodes to physical index of
   sports.

2. Move all platform data into arch specific board files.  Register
   and probe platform device data in both early and normal stages.

3. Console is registered in sport uart driver as well.

4. Remove 500 us block waiting in sport tx stop code by putting a
   dummy data into tx fifo to make sure the sport tx stops when all bytes
   are shifted out except for the dummy data.

5. clean up a bit and fix up coding style.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:43:06 -08:00
Bryan Wu 2f3517418d Blackfin serial driver: this driver enable SPORTs on Blackfin emulate UART
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 08:29:30 -07:00