From patchwork Wed Jan 10 16:07:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo F. Padovan" X-Patchwork-Id: 46418 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from vger.kernel.org ([209.132.180.67]) by www.linuxtv.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eZIyY-0001fU-LP; Wed, 10 Jan 2018 16:11:38 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966068AbeAJQKE (ORCPT + 1 other); Wed, 10 Jan 2018 11:10:04 -0500 Received: from mail-qk0-f194.google.com ([209.85.220.194]:45404 "EHLO mail-qk0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966003AbeAJQKC (ORCPT ); Wed, 10 Jan 2018 11:10:02 -0500 Received: by mail-qk0-f194.google.com with SMTP id z12so2344846qkf.12; Wed, 10 Jan 2018 08:10:01 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=bt4nuvPqUa3Xl3FyEzdJnAWvx1Jd2+GS4synz/6PtSs=; b=XIfxiBIZu9qN2vvrPqlblpqb2nndR3wxgwrKhajZh8W71ErxTKTTuSiJIzMZ66uULS EOhcdqzbqJ136tUSqiogsysAOpsehnjWmCFxp522YoUi5xFGFrXd+AkxuSRXb5xaRnYs REPLLfZ+GXIY1A0oY4HzqJfsFOBLpKW9BaPyLC6cBVn6XS1IN6DS+F2mNrPXVP29VJK0 QtqHTG6HRK2HDTRxtLfG/8mv6nlN6Y5XT3OUyOkkCPuSc+2i+tdlssOok7Lx16grFcQj gY31/oRJMXrSbJghPEQ3RWiOEueINm91IXEYEHMLINhwWJZmbXir02rPTbIuW5lSD6RX jU/w== X-Gm-Message-State: AKGB3mLkVBqy2ZbjwgavXlEPbMHA7XxaNRu4QcanmashRDpt6Lni7f+9 d70iYjqfk3OOJn8k6Tb0UjOcTArH9Yw= X-Google-Smtp-Source: ACJfBovX+2kmfxxbBhyddZOUZhsN/TJntWBXwZzT4HZvfNm92KcNKw5DeFBqzKN0hhveOs74H/stXQ== X-Received: by 10.55.130.69 with SMTP id e66mr27925249qkd.76.1515600601047; Wed, 10 Jan 2018 08:10:01 -0800 (PST) Received: from localhost.localdomain ([2804:18:1033:9de::3]) by smtp.gmail.com with ESMTPSA id k3sm10470356qtj.40.2018.01.10.08.09.47 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 10 Jan 2018 08:10:00 -0800 (PST) From: Gustavo Padovan To: linux-media@vger.kernel.org Cc: Hans Verkuil , Mauro Carvalho Chehab , Shuah Khan , Pawel Osciak , Alexandre Courbot , Sakari Ailus , Brian Starkey , Thierry Escande , linux-kernel@vger.kernel.org, Gustavo Padovan Subject: [PATCH v7 1/6] [media] vb2: add is_unordered callback for drivers Date: Wed, 10 Jan 2018 14:07:27 -0200 Message-Id: <20180110160732.7722-2-gustavo@padovan.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180110160732.7722-1-gustavo@padovan.org> References: <20180110160732.7722-1-gustavo@padovan.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Gustavo Padovan Explicit synchronization benefits a lot from ordered queues, they fit better in a pipeline with DRM for example so create a opt-in way for drivers notify videobuf2 that the queue is unordered. Drivers don't need implement it if the queue is ordered. Signed-off-by: Gustavo Padovan --- include/media/videobuf2-core.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index f3ee4c7c2fb3..583cdc06de79 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -370,6 +370,9 @@ struct vb2_buffer { * callback by calling vb2_buffer_done() with either * %VB2_BUF_STATE_DONE or %VB2_BUF_STATE_ERROR; may use * vb2_wait_for_all_buffers() function + * @is_unordered: tell if the queue format is unordered. The default is + * assumed to be ordered and this function only needs to + * be implemented for unordered queues. * @buf_queue: passes buffer vb to the driver; driver may start * hardware operation on this buffer; driver should give * the buffer back by calling vb2_buffer_done() function; @@ -393,6 +396,7 @@ struct vb2_ops { int (*start_streaming)(struct vb2_queue *q, unsigned int count); void (*stop_streaming)(struct vb2_queue *q); + int (*is_unordered)(struct vb2_queue *q); void (*buf_queue)(struct vb2_buffer *vb); }; @@ -566,6 +570,7 @@ struct vb2_queue { u32 cnt_wait_finish; u32 cnt_start_streaming; u32 cnt_stop_streaming; + u32 cnt_is_unordered; #endif };