linux-kernel - [RFC][PATCHv2 06/12] videobuf2: factor out planes prepare/finish functions

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Message-Id: <20200204025641.218376-7-senozhatsky@chromium.org>
Date:   Tue,  4 Feb 2020 11:56:35 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Hans Verkuil <hans.verkuil@...co.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Sakari Ailus <sakari.ailus@....fi>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Pawel Osciak <posciak@...omium.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: [RFC][PATCHv2 06/12] videobuf2: factor out planes prepare/finish functions

Factor out the code, no functional changes.

Change-Id: I47044c0ba57ccc47a5d23f36976ce9f1e3b0f67f
Signed-off-by: Sergey Senozhatsky <senozhatsky@...omium.org>
---
 .../media/common/videobuf2/videobuf2-core.c   | 52 +++++++++++--------
 1 file changed, 31 insertions(+), 21 deletions(-)

diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 56fd17eafb6c..46be9c790ff6 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -296,6 +296,32 @@ static void __vb2_buf_dmabuf_put(struct vb2_buffer *vb)
 		__vb2_plane_dmabuf_put(vb, &vb->planes[plane]);
 }
 
+/*
+ * __vb2_buf_mem_prepare() - call ->prepare() on buffer's private memory
+ * to sync caches
+ */
+static void __vb2_buf_mem_prepare(struct vb2_buffer *vb)
+{
+	unsigned int plane;
+
+	for (plane = 0; plane < vb->num_planes; ++plane)
+		call_void_memop(vb, prepare, vb->planes[plane].mem_priv);
+	vb->synced = 1;
+}
+
+/*
+ * __vb2_buf_mem_finish() - call ->finish on buffer's private memory
+ * to sync caches
+ */
+static void __vb2_buf_mem_finish(struct vb2_buffer *vb)
+{
+	unsigned int plane;
+
+	for (plane = 0; plane < vb->num_planes; ++plane)
+		call_void_memop(vb, finish, vb->planes[plane].mem_priv);
+	vb->synced = 0;
+}
+
 /*
  * __setup_offsets() - setup unique offsets ("cookies") for every plane in
  * the buffer.
@@ -951,7 +977,6 @@ 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 (WARN_ON(vb->state != VB2_BUF_STATE_ACTIVE))
 		return;
@@ -971,12 +996,8 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state)
 	dprintk(4, "done processing on buffer %d, state: %d\n",
 			vb->index, state);
 
-	if (state != VB2_BUF_STATE_QUEUED) {
-		/* sync buffers */
-		for (plane = 0; plane < vb->num_planes; ++plane)
-			call_void_memop(vb, finish, vb->planes[plane].mem_priv);
-		vb->synced = 0;
-	}
+	if (state != VB2_BUF_STATE_QUEUED)
+		__vb2_buf_mem_finish(vb);
 
 	spin_lock_irqsave(&q->done_lock, flags);
 	if (state == VB2_BUF_STATE_QUEUED) {
@@ -1301,7 +1322,6 @@ static int __buf_prepare(struct vb2_buffer *vb)
 {
 	struct vb2_queue *q = vb->vb2_queue;
 	enum vb2_buffer_state orig_state = vb->state;
-	unsigned int plane;
 	int ret;
 
 	if (q->error) {
@@ -1345,11 +1365,7 @@ static int __buf_prepare(struct vb2_buffer *vb)
 		return ret;
 	}
 
-	/* sync buffers */
-	for (plane = 0; plane < vb->num_planes; ++plane)
-		call_void_memop(vb, prepare, vb->planes[plane].mem_priv);
-
-	vb->synced = 1;
+	__vb2_buf_mem_prepare(vb);
 	vb->prepared = 1;
 	vb->state = orig_state;
 
@@ -1969,14 +1985,8 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
 				call_void_vb_qop(vb, buf_request_complete, vb);
 		}
 
-		if (vb->synced) {
-			unsigned int plane;
-
-			for (plane = 0; plane < vb->num_planes; ++plane)
-				call_void_memop(vb, finish,
-						vb->planes[plane].mem_priv);
-			vb->synced = 0;
-		}
+		if (vb->synced)
+			__vb2_buf_mem_finish(vb);
 
 		if (vb->prepared) {
 			call_void_vb_qop(vb, buf_finish, vb);
-- 
2.25.0.341.g760bfbb309-goog