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| author | Jay Fenlason, Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-01-04 16:23:29 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-03-24 20:56:44 +0100 |
| commit | acfe8333572cad5dc70fce18ac966be0446548d7 (patch) | |
| tree | 7402f2c6759465c351d735855990620e24a644e2 /include/linux/firewire-cdev.h | |
| parent | 33580a3ef5ba3bc0ee1b520df82a24bb37ce28f0 (diff) | |
| download | lwn-acfe8333572cad5dc70fce18ac966be0446548d7.tar.gz lwn-acfe8333572cad5dc70fce18ac966be0446548d7.zip | |
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>
Diffstat (limited to 'include/linux/firewire-cdev.h')
| -rw-r--r-- | include/linux/firewire-cdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index f819c1026958..340a78502bca 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -230,6 +230,7 @@ union fw_cdev_event { #define FW_CDEV_IOC_ALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x0f, struct fw_cdev_allocate_iso_resource) #define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x10, struct fw_cdev_allocate_iso_resource) #define FW_CDEV_IOC_GET_SPEED _IOR('#', 0x11, struct fw_cdev_get_speed) +#define FW_CDEV_IOC_SEND_BROADCAST_REQUEST _IOW('#', 0x12, struct fw_cdev_send_request) /* FW_CDEV_VERSION History * |