linux-kernel - [PATCH v3 09/14] media: platform: pxa

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Date:	Mon,  8 Aug 2016 21:30:47 +0200
From:	Robert Jarzmik <robert.jarzmik@...e.fr>
To:	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Jiri Kosina <trivial@...nel.org>,
	Hans Verkuil <hverkuil@...all.nl>
Cc:	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	Robert Jarzmik <robert.jarzmik@...e.fr>
Subject: [PATCH v3 09/14] media: platform: pxa_camera: add buffer sequencing

Add sequence numbers to completed buffers.

Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
---
 drivers/media/platform/soc_camera/pxa_camera.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
index d66443ac1f4d..8a65f126d091 100644
--- a/drivers/media/platform/soc_camera/pxa_camera.c
+++ b/drivers/media/platform/soc_camera/pxa_camera.c
@@ -223,6 +223,7 @@ struct pxa_camera_dev {
 	struct list_head	capture;
 
 	spinlock_t		lock;
+	unsigned int		buf_sequence;
 
 	struct pxa_buffer	*active;
 	struct tasklet_struct	task_eof;
@@ -401,6 +402,7 @@ static void pxa_camera_start_capture(struct pxa_camera_dev *pcdev)
 	unsigned long cicr0;
 
 	dev_dbg(pcdev_to_dev(pcdev), "%s\n", __func__);
+	pcdev->buf_sequence = 0;
 	__raw_writel(__raw_readl(pcdev->base + CISR), pcdev->base + CISR);
 	/* Enable End-Of-Frame Interrupt */
 	cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_ENB;
@@ -425,10 +427,13 @@ static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev,
 			      struct pxa_buffer *buf)
 {
 	struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 
 	/* _init is used to debug races, see comment in pxa_camera_reqbufs() */
 	list_del_init(&buf->queue);
 	vb->timestamp = ktime_get_ns();
+	vbuf->sequence = pcdev->buf_sequence++;
+	vbuf->field = V4L2_FIELD_NONE;
 	vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
 	dev_dbg(pcdev_to_dev(pcdev), "%s dequeud buffer (buf=0x%p)\n",
 		__func__, buf);
-- 
2.1.4