From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932112AbdCMTYX (ORCPT ); Mon, 13 Mar 2017 15:24:23 -0400 Received: from mail-qk0-f196.google.com ([209.85.220.196]:36393 "EHLO mail-qk0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751700AbdCMTUt (ORCPT ); Mon, 13 Mar 2017 15:20:49 -0400 From: Gustavo Padovan To: linux-media@vger.kernel.org Cc: Hans Verkuil , Mauro Carvalho Chehab , Laurent Pinchart , Javier Martinez Canillas , linux-kernel@vger.kernel.org, Gustavo Padovan Subject: [RFC 02/10] [media] vb2: split out queueing from vb_core_qbuf() Date: Mon, 13 Mar 2017 16:20:27 -0300 Message-Id: <20170313192035.29859-3-gustavo@padovan.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170313192035.29859-1-gustavo@padovan.org> References: <20170313192035.29859-1-gustavo@padovan.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Gustavo Padovan In order to support explicit synchronization we need to divide vb2_core_qbuf() in two parts one, to be executed before the fence signals and another one after that, to do the actual queueing of the buffer. Signed-off-by: Gustavo Padovan --- drivers/media/v4l2-core/videobuf2-core.c | 65 ++++++++++++++++++-------------- 1 file changed, 36 insertions(+), 29 deletions(-) diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 94afbbf9..0e30fcd 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1363,29 +1363,10 @@ static int vb2_start_streaming(struct vb2_queue *q) return ret; } -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb) +static int __vb2_core_qbuf(struct vb2_buffer *vb, struct vb2_queue *q) { - struct vb2_buffer *vb; int ret; - vb = q->bufs[index]; - - switch (vb->state) { - case VB2_BUF_STATE_DEQUEUED: - ret = __buf_prepare(vb, pb); - if (ret) - return ret; - break; - case VB2_BUF_STATE_PREPARED: - break; - case VB2_BUF_STATE_PREPARING: - dprintk(1, "buffer still being prepared\n"); - return -EINVAL; - default: - dprintk(1, "invalid buffer state %d\n", vb->state); - return -EINVAL; - } - /* * Add to the queued buffers list, a buffer will stay on it until * dequeued in dqbuf. @@ -1395,11 +1376,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb) q->waiting_for_buffers = false; vb->state = VB2_BUF_STATE_QUEUED; - if (pb) - call_void_bufop(q, copy_timestamp, vb, pb); - - trace_vb2_qbuf(q, vb); - /* * If already streaming, give the buffer to driver for processing. * If not, the buffer will be given to driver on next streamon. @@ -1407,10 +1383,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb) if (q->start_streaming_called) __enqueue_in_driver(vb); - /* Fill buffer information for the userspace */ - if (pb) - call_void_bufop(q, fill_user_buffer, vb, pb); - /* * If streamon has been called, and we haven't yet called * start_streaming() since not enough buffers were queued, and @@ -1427,6 +1399,41 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb) dprintk(1, "qbuf of buffer %d succeeded\n", vb->index); return 0; } + +int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb) +{ + struct vb2_buffer *vb; + int ret; + + vb = q->bufs[index]; + + switch (vb->state) { + case VB2_BUF_STATE_DEQUEUED: + ret = __buf_prepare(vb, pb); + if (ret) + return ret; + break; + case VB2_BUF_STATE_PREPARED: + break; + case VB2_BUF_STATE_PREPARING: + dprintk(1, "buffer still being prepared\n"); + return -EINVAL; + default: + dprintk(1, "invalid buffer state %d\n", vb->state); + return -EINVAL; + } + + if (pb) + call_void_bufop(q, copy_timestamp, vb, pb); + + trace_vb2_qbuf(q, vb); + + /* Fill buffer information for the userspace */ + if (pb) + call_void_bufop(q, fill_user_buffer, vb, pb); + + return __vb2_core_qbuf(vb, q); +} EXPORT_SYMBOL_GPL(vb2_core_qbuf); /** -- 2.9.3