From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-pf0-f194.google.com ([209.85.192.194]:35390 "EHLO mail-pf0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752684AbdFPHjo (ORCPT ); Fri, 16 Jun 2017 03:39:44 -0400 Received: by mail-pf0-f194.google.com with SMTP id s66so4709651pfs.2 for ; Fri, 16 Jun 2017 00:39:43 -0700 (PDT) From: Gustavo Padovan To: linux-media@vger.kernel.org Cc: Hans Verkuil , Javier Martinez Canillas , Mauro Carvalho Chehab , Shuah Khan , Gustavo Padovan Subject: [PATCH 08/12] [media] vb2: add 'ordered' property to queues Date: Fri, 16 Jun 2017 16:39:11 +0900 Message-Id: <20170616073915.5027-9-gustavo@padovan.org> In-Reply-To: <20170616073915.5027-1-gustavo@padovan.org> References: <20170616073915.5027-1-gustavo@padovan.org> Sender: linux-media-owner@vger.kernel.org List-ID: From: Gustavo Padovan For explicit synchronization (and soon for HAL3/Request API) we need the v4l2-driver to guarantee the ordering which the buffer were queued by userspace. This is already true for many drivers, but we never had the need to say it. Signed-off-by: Gustavo Padovan --- include/media/videobuf2-core.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index aa43e43..a8b800e 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -491,6 +491,9 @@ struct vb2_buf_ops { * @last_buffer_dequeued: used in poll() and DQBUF to immediately return if the * last decoded buffer was already dequeued. Set for capture queues * when a buffer with the V4L2_BUF_FLAG_LAST is dequeued. + * @ordered: if the driver can guarantee that the queue will be ordered or not. + * The default is not ordered unless the driver sets this flag. It + * is mandatory for using explicit fences. * @fileio: file io emulator internal data, used only if emulator is active * @threadio: thread io internal data, used only if thread is active */ @@ -541,6 +544,7 @@ struct vb2_queue { unsigned int is_output:1; unsigned int copy_timestamp:1; unsigned int last_buffer_dequeued:1; + unsigned int ordered:1; struct vb2_fileio_data *fileio; struct vb2_threadio_data *threadio; -- 2.9.4