From: Stefan Richter Date: Sun, 20 Jun 2010 20:54:22 +0000 (+0200) Subject: firewire: cdev: extend fw_cdev_event_iso_interrupt documentation X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=3b2b65d68fc87b02ac393a031a4ebb3de84a8218;p=openwrt%2Fstaging%2Fblogic.git firewire: cdev: extend fw_cdev_event_iso_interrupt documentation Add information regarding the 2.6.32 update to the xmit variant of fw_cdev_event_iso_interrupt. Signed-off-by: Stefan Richter --- diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 52c7ffe934ad..8b9b27373219 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -204,10 +204,21 @@ struct fw_cdev_event_request2 { * @header: Stripped headers, if any * * This event is sent when the controller has completed an &fw_cdev_iso_packet - * with the %FW_CDEV_ISO_INTERRUPT bit set. In the receive case, the headers - * stripped of all packets up until and including the interrupt packet are - * returned in the @header field. The amount of header data per packet is as - * specified at iso context creation by &fw_cdev_create_iso_context.header_size. + * with the %FW_CDEV_ISO_INTERRUPT bit set. + * + * Isochronous transmit events: + * + * In version 1 of the ABI, &header_length is 0. In version 3 and some + * implementations of version 2 of the ABI, &header_length is a multiple of 4 + * and &header contains timestamps of all packets up until the interrupt packet. + * The format of the timestamps is as described below for isochronous reception. + * + * Isochronous receive events: + * + * The headers stripped of all packets up until and including the interrupt + * packet are returned in the @header field. The amount of header data per + * packet is as specified at iso context creation by + * &fw_cdev_create_iso_context.header_size. * * In version 1 of this ABI, header data consisted of the 1394 isochronous * packet header, followed by quadlets from the packet payload if