]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
firewire: cdev: add ioctl for broadcast write requests
authorJay Fenlason, Stefan Richter <stefanr@s5r6.in-berlin.de>
Sun, 4 Jan 2009 15:23:29 +0000 (16:23 +0100)
committerStefan Richter <stefanr@s5r6.in-berlin.de>
Tue, 24 Mar 2009 19:56:44 +0000 (20:56 +0100)
commitacfe8333572cad5dc70fce18ac966be0446548d7
tree7402f2c6759465c351d735855990620e24a644e2
parent33580a3ef5ba3bc0ee1b520df82a24bb37ce28f0
firewire: cdev: add ioctl for broadcast write requests

Write transactions to the broadcast node ID are a convenient way to
trigger functions of multiple nodes at once.  IIDC is a protocol which
can make use of this if multiple cameras with same command_regs_base are
connected at the same bus.

Based on
    Date: Wed, 10 Sep 2008 11:32:16 -0400
    From: Jay Fenlason <fenlason@redhat.com>
    Subject: [patch] SEND_BROADCAST_REQUEST
Changes:  ioctl_send_request() and ioctl_send_broadcast_request() now
share code.  Broadcast speed corrected to S100.  Check for proper tcode.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
drivers/firewire/fw-cdev.c
include/linux/firewire-cdev.h