[media] media: videobuf2: Move timestamp to vb2_buffer

Move timestamp from struct vb2_v4l2_buffer to struct vb2_buffer
for common use, and change its type to u64 in order to handling
y2038 problem. This patch also includes all device drivers' changes related to
this restructuring.

Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

6 files changed, 23 insertions, 17 deletions

diff --git a/drivers/media/platform/vivid/vivid-core.h b/drivers/media/platform/vivid/vivid-core.h
index 8c7a5ba..751c1ba 100644
--- a/drivers/media/platform/vivid/vivid-core.h
+++ b/drivers/media/platform/vivid/vivid-core.h
@@ -286,7 +286,7 @@ struct vivid_dev {
 	bool				dqbuf_error;
 	bool				seq_wrap;
 	bool				time_wrap;
-	__kernel_time_t			time_wrap_offset;
+	u64				time_wrap_offset;
 	unsigned			perc_dropped_buffers;
 	enum vivid_signal_mode		std_signal_mode;
 	unsigned			query_std_last;
diff --git a/drivers/media/platform/vivid/vivid-ctrls.c b/drivers/media/platform/vivid/vivid-ctrls.c
index 4ab7c4b..b98089c 100644
--- a/drivers/media/platform/vivid/vivid-ctrls.c
+++ b/drivers/media/platform/vivid/vivid-ctrls.c
@@ -954,7 +954,7 @@ static const struct v4l2_ctrl_config vivid_ctrl_has_scaler_out = {
 static int vivid_streaming_s_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct vivid_dev *dev = container_of(ctrl->handler, struct vivid_dev, ctrl_hdl_streaming);
-	struct timeval tv;
+	u64 rem;
 
 	switch (ctrl->id) {
 	case VIVID_CID_DQBUF_ERROR:
@@ -993,8 +993,16 @@ static int vivid_streaming_s_ctrl(struct v4l2_ctrl *ctrl)
 			dev->time_wrap_offset = 0;
 			break;
 		}
-		v4l2_get_timestamp(&tv);
-		dev->time_wrap_offset = -tv.tv_sec - 16;
+		/*
+		 * We want to set the time 16 seconds before the 32 bit tv_sec
+		 * value of struct timeval would wrap around. So first we
+		 * calculate ktime_get_ns() % ((1 << 32) * NSEC_PER_SEC), and
+		 * then we set the offset to ((1 << 32) - 16) * NSEC_PER_SEC).
+		 */
+		div64_u64_rem(ktime_get_ns(),
+			0x100000000ULL * NSEC_PER_SEC, &rem);
+		dev->time_wrap_offset =
+			(0x100000000ULL - 16) * NSEC_PER_SEC - rem;
 		break;
 	}
 	return 0;
diff --git a/drivers/media/platform/vivid/vivid-kthread-cap.c b/drivers/media/platform/vivid/vivid-kthread-cap.c
index 83cc6d3..9034281 100644
--- a/drivers/media/platform/vivid/vivid-kthread-cap.c
+++ b/drivers/media/platform/vivid/vivid-kthread-cap.c
@@ -441,7 +441,7 @@ static void vivid_fillbuff(struct vivid_dev *dev, struct vivid_buffer *buf)
 	 * "Start of Exposure".
 	 */
 	if (dev->tstamp_src_is_soe)
-		v4l2_get_timestamp(&buf->vb.timestamp);
+		buf->vb.vb2_buf.timestamp = ktime_get_ns();
 	if (dev->field_cap == V4L2_FIELD_ALTERNATE) {
 		/*
 		 * 60 Hz standards start with the bottom field, 50 Hz standards
@@ -558,8 +558,8 @@ static void vivid_fillbuff(struct vivid_dev *dev, struct vivid_buffer *buf)
 	 * the timestamp now.
 	 */
 	if (!dev->tstamp_src_is_soe)
-		v4l2_get_timestamp(&buf->vb.timestamp);
-	buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
+		buf->vb.vb2_buf.timestamp = ktime_get_ns();
+	buf->vb.vb2_buf.timestamp += dev->time_wrap_offset;
 }
 
 /*
diff --git a/drivers/media/platform/vivid/vivid-kthread-out.c b/drivers/media/platform/vivid/vivid-kthread-out.c
index c2c46dc..98eed58 100644
--- a/drivers/media/platform/vivid/vivid-kthread-out.c
+++ b/drivers/media/platform/vivid/vivid-kthread-out.c
@@ -95,8 +95,8 @@ static void vivid_thread_vid_out_tick(struct vivid_dev *dev)
 			 */
 			vid_out_buf->vb.sequence /= 2;
 		}
-		v4l2_get_timestamp(&vid_out_buf->vb.timestamp);
-		vid_out_buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
+		vid_out_buf->vb.vb2_buf.timestamp =
+			ktime_get_ns() + dev->time_wrap_offset;
 		vb2_buffer_done(&vid_out_buf->vb.vb2_buf, dev->dqbuf_error ?
 				VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
 		dprintk(dev, 2, "vid_out buffer %d done\n",
@@ -108,8 +108,8 @@ static void vivid_thread_vid_out_tick(struct vivid_dev *dev)
 			vivid_sliced_vbi_out_process(dev, vbi_out_buf);
 
 		vbi_out_buf->vb.sequence = dev->vbi_out_seq_count;
-		v4l2_get_timestamp(&vbi_out_buf->vb.timestamp);
-		vbi_out_buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
+		vbi_out_buf->vb.vb2_buf.timestamp =
+			ktime_get_ns() + dev->time_wrap_offset;
 		vb2_buffer_done(&vbi_out_buf->vb.vb2_buf, dev->dqbuf_error ?
 				VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
 		dprintk(dev, 2, "vbi_out buffer %d done\n",
diff --git a/drivers/media/platform/vivid/vivid-sdr-cap.c b/drivers/media/platform/vivid/vivid-sdr-cap.c
index 6eeeff9..3d1604c 100644
--- a/drivers/media/platform/vivid/vivid-sdr-cap.c
+++ b/drivers/media/platform/vivid/vivid-sdr-cap.c
@@ -117,8 +117,8 @@ static void vivid_thread_sdr_cap_tick(struct vivid_dev *dev)
 	if (sdr_cap_buf) {
 		sdr_cap_buf->vb.sequence = dev->sdr_cap_seq_count;
 		vivid_sdr_cap_process(dev, sdr_cap_buf);
-		v4l2_get_timestamp(&sdr_cap_buf->vb.timestamp);
-		sdr_cap_buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
+		sdr_cap_buf->vb.vb2_buf.timestamp =
+			ktime_get_ns() + dev->time_wrap_offset;
 		vb2_buffer_done(&sdr_cap_buf->vb.vb2_buf, dev->dqbuf_error ?
 				VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
 		dev->dqbuf_error = false;
diff --git a/drivers/media/platform/vivid/vivid-vbi-cap.c b/drivers/media/platform/vivid/vivid-vbi-cap.c
index d6d12e1..cda45a5 100644
--- a/drivers/media/platform/vivid/vivid-vbi-cap.c
+++ b/drivers/media/platform/vivid/vivid-vbi-cap.c
@@ -108,8 +108,7 @@ void vivid_raw_vbi_cap_process(struct vivid_dev *dev, struct vivid_buffer *buf)
 	if (!VIVID_INVALID_SIGNAL(dev->std_signal_mode))
 		vivid_vbi_gen_raw(&dev->vbi_gen, &vbi, vbuf);
 
-	v4l2_get_timestamp(&buf->vb.timestamp);
-	buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
+	buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
 }
 
 
@@ -133,8 +132,7 @@ void vivid_sliced_vbi_cap_process(struct vivid_dev *dev,
 			vbuf[i] = dev->vbi_gen.data[i];
 	}
 
-	v4l2_get_timestamp(&buf->vb.timestamp);
-	buf->vb.timestamp.tv_sec += dev->time_wrap_offset;
+	buf->vb.vb2_buf.timestamp = ktime_get_ns() + dev->time_wrap_offset;
 }
 
 static int vbi_cap_queue_setup(struct vb2_queue *vq,