serial: at91: make UART support dma and pdc transfers

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Because the UART lack of receive timeout register, so we use a timer to trigger
data receive.
The DBGU is regarded as UART.

Signed-off-by: Elen Song <elen.song@atmel.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Elen Song 2013-07-22 16:30:30 +08:00 • committed by Greg Kroah-Hartman

parent 055560b04a

commit 2e68c22fde

1 changed files with 42 additions and 6 deletions

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48

drivers/tty/serial/atmel_serial.c

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