path: root/Documentation/serial
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authorBernhard Roth <br@pwrnet.de>2011-08-24 09:48:23 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2011-08-24 15:27:59 -0700
commit83cac9f3b45ba8e99c5305be42c67f1c83adf0aa (patch)
treeb9b5ec2373ec4e113535cdbe50a09e601fa32ee9 /Documentation/serial
parent019dc9ea8d528eb3640bbba604e1e5a2f6994b1f (diff)
atmel_serial: RS485: receiving enabled when sending data
By default the atmel_serial driver in RS485 mode disables receiving data until all data in the send buffer has been sent. This flag allows to receive data even whilst sending data. Signed-off-by: Bernhard Roth <br@pwrnet.de> Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/serial')
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt
index a4932387bbfb..c8878f821d1e 100644
--- a/Documentation/serial/serial-rs485.txt
+++ b/Documentation/serial/serial-rs485.txt
@@ -104,6 +104,9 @@
rs485conf.flags |= SER_RS485_RTS_AFTER_SEND;
rs485conf.delay_rts_after_send = ...;
+ /* Set this flag if you want to receive data even whilst sending data */
+ rs485conf.flags |= SER_RS485_RX_DURING_TX;
if (ioctl (fd, TIOCSRS485, &rs485conf) < 0) {
/* Error handling. See errno. */

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