[media] media: s5p-mfc: use vb2_ops_wait_prepare/finish helper

This patch drops driver specific wait_prepare() and
wait_finish() callbacks from vb2_ops and instead uses
the the helpers vb2_ops_wait_prepare/finish() provided
by the vb2 core, the lock member of the queue needs
to be initalized to a mutex so that vb2 helpers
vb2_ops_wait_prepare/finish() can make use of it.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Kamil Debski <k.debski@samsung.com>
Cc: Jeongtae Park <jtp.park@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/s5p-mfc/s5p_mfc.c

@@ -810,6 +810,7 @@ static int s5p_mfc_open(struct file *file)
 	q = &ctx->vq_dst;
 	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
 	q->drv_priv = &ctx->fh;
+	q->lock = &dev->mfc_mutex;
 	if (vdev == dev->vfd_dec) {
 		q->io_modes = VB2_MMAP;
 		q->ops = get_dec_queue_ops();

drivers/media/platform/s5p-mfc/s5p_mfc_dec.c

@@ -944,22 +944,6 @@ static int s5p_mfc_queue_setup(struct vb2_queue *vq,
 	return 0;
 }
 
-static void s5p_mfc_unlock(struct vb2_queue *q)
-{
-	struct s5p_mfc_ctx *ctx = fh_to_ctx(q->drv_priv);
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	mutex_unlock(&dev->mfc_mutex);
-}
-
-static void s5p_mfc_lock(struct vb2_queue *q)
-{
-	struct s5p_mfc_ctx *ctx = fh_to_ctx(q->drv_priv);
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	mutex_lock(&dev->mfc_mutex);
-}
-
 static int s5p_mfc_buf_init(struct vb2_buffer *vb)
 {
 	struct vb2_queue *vq = vb->vb2_queue;
@@ -1107,8 +1091,8 @@ static void s5p_mfc_buf_queue(struct vb2_buffer *vb)
 
 static struct vb2_ops s5p_mfc_dec_qops = {
 	.queue_setup		= s5p_mfc_queue_setup,
-	.wait_prepare		= s5p_mfc_unlock,
-	.wait_finish		= s5p_mfc_lock,
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
 	.buf_init		= s5p_mfc_buf_init,
 	.start_streaming	= s5p_mfc_start_streaming,
 	.stop_streaming		= s5p_mfc_stop_streaming,

drivers/media/platform/s5p-mfc/s5p_mfc_enc.c

@@ -1867,22 +1867,6 @@ static int s5p_mfc_queue_setup(struct vb2_queue *vq,
 	return 0;
 }
 
-static void s5p_mfc_unlock(struct vb2_queue *q)
-{
-	struct s5p_mfc_ctx *ctx = fh_to_ctx(q->drv_priv);
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	mutex_unlock(&dev->mfc_mutex);
-}
-
-static void s5p_mfc_lock(struct vb2_queue *q)
-{
-	struct s5p_mfc_ctx *ctx = fh_to_ctx(q->drv_priv);
-	struct s5p_mfc_dev *dev = ctx->dev;
-
-	mutex_lock(&dev->mfc_mutex);
-}
-
 static int s5p_mfc_buf_init(struct vb2_buffer *vb)
 {
 	struct vb2_queue *vq = vb->vb2_queue;
@@ -2052,8 +2036,8 @@ static void s5p_mfc_buf_queue(struct vb2_buffer *vb)
 
 static struct vb2_ops s5p_mfc_enc_qops = {
 	.queue_setup		= s5p_mfc_queue_setup,
-	.wait_prepare		= s5p_mfc_unlock,
-	.wait_finish		= s5p_mfc_lock,
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
 	.buf_init		= s5p_mfc_buf_init,
 	.buf_prepare		= s5p_mfc_buf_prepare,
 	.start_streaming	= s5p_mfc_start_streaming,