From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754112Ab2IXKzg (ORCPT ); Mon, 24 Sep 2012 06:55:36 -0400 Received: from mail-ey0-f174.google.com ([209.85.215.174]:49429 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753909Ab2IXKzf (ORCPT ); Mon, 24 Sep 2012 06:55:35 -0400 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 v3 1/4] v4l: vb2: add prepare/finish callbacks to allocators Date: Mon, 24 Sep 2012 12:58:49 +0200 Message-Id: <1348484332-8106-1-git-send-email-federico.vaga@gmail.com> X-Mailer: git-send-email 1.7.11.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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..2508609 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 every time the buffer is passed from userspace to the + * driver, usefull for cache synchronisation, optional + * @finish: called every time 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); -- 1.7.11.4