From patchwork Thu Sep 13 13:52:45 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Federico Vaga X-Patchwork-Id: 14345 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1TC9nx-000097-Dd for patchwork@linuxtv.org; Thu, 13 Sep 2012 15:50:05 +0200 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.75/mailfrontend-3) with esmtp for id 1TC9nw-0003M6-G5; Thu, 13 Sep 2012 15:50:05 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752231Ab2IMNtt (ORCPT ); Thu, 13 Sep 2012 09:49:49 -0400 Received: from mail-ee0-f46.google.com ([74.125.83.46]:42751 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752189Ab2IMNts (ORCPT ); Thu, 13 Sep 2012 09:49:48 -0400 Received: by eekc1 with SMTP id c1so1953878eek.19 for ; Thu, 13 Sep 2012 06:49:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer; bh=HmTcZ95/SSQfwdiUnoHoGUWTivGkgJRpZBzxhD2BcdM=; b=wupcm0pUVI1dXPvR9EMvp4iSpLaosUBTW/GyqewnRHwXsnpmgCOcxDKvzxcza4yOHH lGxuWS8gXr+oQwl9tjyMKyNx6EPtHUKUzYJKTWLOXMPUID41Ref1cQF8IQw/414pL2Jo wlnGphvH6TZXpR3b19e9w3BlYP5A+Phh8apEHN7eKjDQeLzQK9GnRoZaa2tj3kYIYR51 MsygT55vjrBTqs+SjBEMS1HiBphBvbSjgD0aItMsCMgDyMEOe8eXnR0lrYRRUWN0X5hE AW520s/rrLB+nGVdii4PY5+eb7NDt3W5O4EVwFDjmzeUeLITgotNnMUIWSE6APmZ9tWr 5jJg== Received: by 10.14.209.129 with SMTP id s1mr2780438eeo.24.1347544186615; Thu, 13 Sep 2012 06:49:46 -0700 (PDT) Received: from harkonnen.fastwebnet.it (2-225-41-194.ip174.fastwebnet.it. [2.225.41.194]) by mx.google.com with ESMTPS id h2sm65371158eeo.3.2012.09.13.06.49.44 (version=SSLv3 cipher=OTHER); Thu, 13 Sep 2012 06:49:45 -0700 (PDT) From: Federico Vaga To: Mauro Carvalho Chehab , Pawel Osciak , Marek Szyprowski , Hans Verkuil Cc: Giancarlo Asnaghi , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Jonathan Corbet , Federico Vaga Subject: [PATCH 1/4] v4l: vb2: add prepare/finish callbacks to allocators Date: Thu, 13 Sep 2012 15:52:45 +0200 Message-Id: <1347544368-30583-1-git-send-email-federico.vaga@gmail.com> X-Mailer: git-send-email 1.7.11.4 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 5.6.1.2065439, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2012.9.13.134225 X-PMX-Spam: Gauge=IIIIIIIII, Probability=9%, Report=' FORGED_FROM_GMAIL 0.1, MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, BODY_SIZE_3000_3999 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, DKIM_SIGNATURE 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CP_URI_IN_BODY 0, __FRAUD_BODY_WEBMAIL 0, __FRAUD_WEBMAIL 0, __FRAUD_WEBMAIL_FROM 0, __FROM_GMAIL 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __MIME_TEXT_ONLY 0, __MULTIPLE_RCPTS_CC_X2 0, __PHISH_SPEAR_STRUCTURE_1 0, __SANE_MSGID 0, __SUBJ_ALPHA_END 0, __TO_MALFORMED_2 0, __URI_NO_WWW 0, __URI_NS ' This patch adds support for prepare/finish callbacks in VB2 allocators. These callback are used for buffer flushing. Signed-off-by: Marek Szyprowski Acked-by: Laurent Pinchart Acked-by: Federico Vaga --- drivers/media/v4l2-core/videobuf2-core.c | 11 +++++++++++ include/media/videobuf2-core.h | 7 +++++++ 2 file modificati, 18 inserzioni(+) diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 4da3df6..079fa79 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -790,6 +790,7 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) { struct vb2_queue *q = vb->vb2_queue; unsigned long flags; + unsigned int plane; if (vb->state != VB2_BUF_STATE_ACTIVE) return; @@ -800,6 +801,10 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) dprintk(4, "Done processing on buffer %d, state: %d\n", vb->v4l2_buf.index, vb->state); + /* sync buffers */ + for (plane = 0; plane < vb->num_planes; ++plane) + call_memop(q, finish, vb->planes[plane].mem_priv); + /* Add the buffer to the done buffers list */ spin_lock_irqsave(&q->done_lock, flags); vb->state = state; @@ -975,9 +980,15 @@ static int __qbuf_mmap(struct vb2_buffer *vb, const struct v4l2_buffer *b) static void __enqueue_in_driver(struct vb2_buffer *vb) { struct vb2_queue *q = vb->vb2_queue; + unsigned int plane; vb->state = VB2_BUF_STATE_ACTIVE; atomic_inc(&q->queued_count); + + /* sync buffers */ + for (plane = 0; plane < vb->num_planes; ++plane) + call_memop(q, prepare, vb->planes[plane].mem_priv); + q->ops->buf_queue(vb); } diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 8dd9b6c..f374f99 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -41,6 +41,10 @@ struct vb2_fileio_data; * argument to other ops in this structure * @put_userptr: inform the allocator that a USERPTR buffer will no longer * be used + * @prepare: called everytime the buffer is passed from userspace to the + * driver, usefull for cache synchronisation, optional + * @finish: called everytime the buffer is passed back from the driver + * to the userspace, also optional * @vaddr: return a kernel virtual address to a given memory buffer * associated with the passed private structure or NULL if no * such mapping exists @@ -65,6 +69,9 @@ struct vb2_mem_ops { unsigned long size, int write); void (*put_userptr)(void *buf_priv); + void (*prepare)(void *buf_priv); + void (*finish)(void *buf_priv); + void *(*vaddr)(void *buf_priv); void *(*cookie)(void *buf_priv);