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* [PATCH v2 0/3] media: meson: vdec: Add compliant H264 support
@ 2019-11-26  9:37 Neil Armstrong
  2019-11-26  9:37 ` [PATCH v2 1/3] media: v4l2-mem2mem: mark DONE any OUTPUT queued buffer after CMD_STOP Neil Armstrong
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Neil Armstrong @ 2019-11-26  9:37 UTC (permalink / raw)
  To: mchehab, hans.verkuil
  Cc: linux-amlogic, linux-media, linux-kernel, linux-arm-kernel,
	Neil Armstrong

Hello,

This patch series aims to bring H.264 support as well as compliance update
to the amlogic stateful video decoder driver.

The issue in the V1 patchset at [1] is solved by patch #1 following comments
and requirements from hans.

With this, it passes v4l2-compliance with streaming on Amlogic G12A and
Amlogic SM1 SoCs successfully.

This patchset depends on G12A and SM1 enablement series at [2] and [3].

The compliance log is:
# v4l2-compliance --stream-from-hdr test-25fps.h264.hdr -s 200
v4l2-compliance SHA: 7ead0e1856b89f2e19369af452bb03fd0cd16793, 64 bits

Compliance test for meson-vdec device /dev/video0:

Driver Info:
	Driver name      : meson-vdec
	Card type        : Amlogic Video Decoder
	Bus info         : platform:meson-vdec
	Driver version   : 5.4.0
	Capabilities     : 0x84204000
		Video Memory-to-Memory Multiplanar
		Streaming
		Extended Pix Format
		Device Capabilities
	Device Caps      : 0x04204000
		Video Memory-to-Memory Multiplanar
		Streaming
		Extended Pix Format
	Detected Stateful Decoder

Required ioctls:
	test VIDIOC_QUERYCAP: OK

Allow for multiple opens:
	test second /dev/video0 open: OK
	test VIDIOC_QUERYCAP: OK
	test VIDIOC_G/S_PRIORITY: OK
	test for unlimited opens: OK

Debug ioctls:
	test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
	test VIDIOC_LOG_STATUS: OK (Not Supported)

Input ioctls:
	test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
	test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
	test VIDIOC_ENUMAUDIO: OK (Not Supported)
	test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
	test VIDIOC_G/S_AUDIO: OK (Not Supported)
	Inputs: 0 Audio Inputs: 0 Tuners: 0

Output ioctls:
	test VIDIOC_G/S_MODULATOR: OK (Not Supported)
	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
	test VIDIOC_ENUMAUDOUT: OK (Not Supported)
	test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
	test VIDIOC_G/S_AUDOUT: OK (Not Supported)
	Outputs: 0 Audio Outputs: 0 Modulators: 0

Input/Output configuration ioctls:
	test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
	test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
	test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
	test VIDIOC_G/S_EDID: OK (Not Supported)

Control ioctls:
	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
	test VIDIOC_QUERYCTRL: OK
	test VIDIOC_G/S_CTRL: OK
	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
	Standard Controls: 2 Private Controls: 0

Format ioctls:
	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
	test VIDIOC_G/S_PARM: OK (Not Supported)
	test VIDIOC_G_FBUF: OK (Not Supported)
	test VIDIOC_G_FMT: OK
	test VIDIOC_TRY_FMT: OK
	test VIDIOC_S_FMT: OK
	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
	test Cropping: OK (Not Supported)
	test Composing: OK (Not Supported)
	test Scaling: OK (Not Supported)

Codec ioctls:
	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
	test VIDIOC_(TRY_)DECODER_CMD: OK

Buffer ioctls:
	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
	test VIDIOC_EXPBUF: OK
	test Requests: OK (Not Supported)

Test input 0:

Streaming ioctls:
	test read/write: OK (Not Supported)
	test blocking wait: OK
	Video Capture Multiplanar: Captured 200 buffers   
	test MMAP (select): OK
	Video Capture Multiplanar: Captured 200 buffers   
	test MMAP (epoll): OK
	test USERPTR (select): OK (Not Supported)
	test DMABUF: Cannot test, specify --expbuf-device

Total for meson-vdec device /dev/video0: 49, Succeeded: 49, Failed: 0, Warnings: 0

Changes since v1 at [1]:
- fixed output_size is never used reported by hans
- rebased on G12A and SM1 patches
- added handling of qbuf after STREAMON and STOP before enought buffer queued

[1] https://lore.kernel.org/linux-media/20191007145909.29979-1-mjourdan@baylibre.com
[2] https://lore.kernel.org/linux-media/20191120111430.29552-1-narmstrong@baylibre.com
[3] https://lore.kernel.org/linux-media/20191121101429.23831-1-narmstrong@baylibre.com

Maxime Jourdan (2):
  media: meson: vdec: bring up to compliance
  media: meson: vdec: add H.264 decoding support

Neil Armstrong (1):
  media: v4l2-mem2mem: mark DONE any OUTPUT queued buffer after CMD_STOP

 drivers/media/v4l2-core/v4l2-mem2mem.c        |  61 ++-
 drivers/staging/media/meson/vdec/Makefile     |   2 +-
 drivers/staging/media/meson/vdec/codec_h264.c | 482 ++++++++++++++++++
 drivers/staging/media/meson/vdec/codec_h264.h |  14 +
 drivers/staging/media/meson/vdec/esparser.c   |  58 +--
 drivers/staging/media/meson/vdec/vdec.c       |  92 ++--
 drivers/staging/media/meson/vdec/vdec.h       |  14 +-
 .../staging/media/meson/vdec/vdec_helpers.c   |  85 ++-
 .../staging/media/meson/vdec/vdec_helpers.h   |   6 +-
 .../staging/media/meson/vdec/vdec_platform.c  |  71 +++
 include/media/v4l2-mem2mem.h                  |  14 +
 11 files changed, 779 insertions(+), 120 deletions(-)
 create mode 100644 drivers/staging/media/meson/vdec/codec_h264.c
 create mode 100644 drivers/staging/media/meson/vdec/codec_h264.h

-- 
2.22.0


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH v2 1/3] media: v4l2-mem2mem: mark DONE any OUTPUT queued buffer after CMD_STOP
  2019-11-26  9:37 [PATCH v2 0/3] media: meson: vdec: Add compliant H264 support Neil Armstrong
@ 2019-11-26  9:37 ` Neil Armstrong
  2019-11-26  9:38 ` [PATCH v2 2/3] media: meson: vdec: bring up to compliance Neil Armstrong
  2019-11-26  9:38 ` [PATCH v2 3/3] media: meson: vdec: add H.264 decoding support Neil Armstrong
  2 siblings, 0 replies; 4+ messages in thread
From: Neil Armstrong @ 2019-11-26  9:37 UTC (permalink / raw)
  To: mchehab, hans.verkuil
  Cc: Maxime Jourdan, Neil Armstrong, linux-kernel, Hans Verkuil,
	linux-amlogic, linux-arm-kernel, linux-media

If a decoder needs a minimal buffer count to be queued on it's CAPTURE
queue, if a CMD_STOP is sent after a STREAMON but before all the required
buffers are queued, it should comply to the drain sequence and mark the
last queued buffer with V4L2_BUF_FLAG_LAST and mark it done to be dequeued.

This introduces a v4l2-mem2mem ioctl decoder command to track the command
sent to the decoder, and should be called by the affected drivers.

Suggested-by: Hans Verkuil <hverkuil@xs4all.nl>
Suggested-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/media/v4l2-core/v4l2-mem2mem.c | 61 +++++++++++++++++++++++++-
 include/media/v4l2-mem2mem.h           | 14 ++++++
 2 files changed, 73 insertions(+), 2 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index 1afd9c6ad908..b09616f9f102 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -556,6 +556,28 @@ int v4l2_m2m_querybuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 }
 EXPORT_SYMBOL_GPL(v4l2_m2m_querybuf);
 
+static void v4l2_m2m_flag_last_buf_done(struct vb2_queue *q)
+{
+	struct vb2_buffer *vb;
+	struct vb2_v4l2_buffer *vbuf;
+	unsigned int i;
+
+	if (WARN_ON(q->is_output))
+		return;
+	if (list_empty(&q->queued_list))
+		return;
+
+	vb = list_first_entry(&q->queued_list, struct vb2_buffer, queued_entry);
+	for (i = 0; i < vb->num_planes; i++)
+		vb2_set_plane_payload(vb, i, 0);
+
+	vb->state = VB2_BUF_STATE_ACTIVE;
+	atomic_inc(&q->owned_by_drv_count);
+	vbuf = to_vb2_v4l2_buffer(vb);
+	vbuf->flags |= V4L2_BUF_FLAG_LAST;
+	vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
+}
+
 int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 		  struct v4l2_buffer *buf)
 {
@@ -570,11 +592,22 @@ int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 			__func__);
 		return -EPERM;
 	}
+
 	ret = vb2_qbuf(vq, vdev->v4l2_dev->mdev, buf);
-	if (!ret && !(buf->flags & V4L2_BUF_FLAG_IN_REQUEST))
+	if (ret)
+		return ret;
+
+	/*
+	 * If the capture queue isn't streaming and we were asked to
+	 * stop, DONE the buffer instantly and flag as LAST
+	 */
+	if (!V4L2_TYPE_IS_OUTPUT(vq->type) && m2m_ctx->stopped &&
+	    vb2_is_streaming(vq) && !vb2_start_streaming_called(vq))
+		v4l2_m2m_flag_last_buf_done(vq);
+	else if ((buf->flags & V4L2_BUF_FLAG_IN_REQUEST))
 		v4l2_m2m_try_schedule(m2m_ctx);
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(v4l2_m2m_qbuf);
 
@@ -1225,6 +1258,30 @@ int v4l2_m2m_ioctl_try_decoder_cmd(struct file *file, void *fh,
 }
 EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_try_decoder_cmd);
 
+int v4l2_m2m_decoder_cmd(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+			 struct v4l2_decoder_cmd *dc)
+{
+	if (dc->cmd != V4L2_DEC_CMD_STOP && dc->cmd != V4L2_DEC_CMD_START)
+		return -EINVAL;
+
+	if (dc->cmd == V4L2_DEC_CMD_STOP)
+		m2m_ctx->stopped = true;
+	else
+		m2m_ctx->stopped = false;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_decoder_cmd);
+
+int v4l2_m2m_ioctl_decoder_cmd(struct file *file, void *priv,
+			       struct v4l2_decoder_cmd *dc)
+{
+	struct v4l2_fh *fh = file->private_data;
+
+	return v4l2_m2m_decoder_cmd(file, fh->m2m_ctx, dc);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_decoder_cmd);
+
 int v4l2_m2m_ioctl_stateless_try_decoder_cmd(struct file *file, void *fh,
 					     struct v4l2_decoder_cmd *dc)
 {
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index 1d85e24791e4..4c083cffdd86 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -98,6 +98,8 @@ struct v4l2_m2m_ctx {
 
 	bool				new_frame;
 
+	bool				stopped;
+
 	/* internal use only */
 	struct v4l2_m2m_dev		*m2m_dev;
 
@@ -312,6 +314,16 @@ int v4l2_m2m_streamon(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 int v4l2_m2m_streamoff(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 		       enum v4l2_buf_type type);
 
+/**
+ * v4l2_m2m_decoder_cmd() - execute a decoder command
+ *
+ * @file: pointer to struct &file
+ * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
+ * @dc: pointer to the decoder command
+ */
+int v4l2_m2m_decoder_cmd(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+			 struct v4l2_decoder_cmd *dc);
+
 /**
  * v4l2_m2m_poll() - poll replacement, for destination buffers only
  *
@@ -704,6 +716,8 @@ int v4l2_m2m_ioctl_streamon(struct file *file, void *fh,
 				enum v4l2_buf_type type);
 int v4l2_m2m_ioctl_streamoff(struct file *file, void *fh,
 				enum v4l2_buf_type type);
+int v4l2_m2m_ioctl_decoder_cmd(struct file *file, void *fh,
+			       struct v4l2_decoder_cmd *dc);
 int v4l2_m2m_ioctl_try_encoder_cmd(struct file *file, void *fh,
 				   struct v4l2_encoder_cmd *ec);
 int v4l2_m2m_ioctl_try_decoder_cmd(struct file *file, void *fh,
-- 
2.22.0


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH v2 2/3] media: meson: vdec: bring up to compliance
  2019-11-26  9:37 [PATCH v2 0/3] media: meson: vdec: Add compliant H264 support Neil Armstrong
  2019-11-26  9:37 ` [PATCH v2 1/3] media: v4l2-mem2mem: mark DONE any OUTPUT queued buffer after CMD_STOP Neil Armstrong
@ 2019-11-26  9:38 ` Neil Armstrong
  2019-11-26  9:38 ` [PATCH v2 3/3] media: meson: vdec: add H.264 decoding support Neil Armstrong
  2 siblings, 0 replies; 4+ messages in thread
From: Neil Armstrong @ 2019-11-26  9:38 UTC (permalink / raw)
  To: mchehab, hans.verkuil
  Cc: Maxime Jourdan, Neil Armstrong, linux-kernel, linux-amlogic,
	linux-arm-kernel, linux-media

From: Maxime Jourdan <mjourdan@baylibre.com>

Add all the necessary bits to pass v4l2-compliance in stateful decoding
mode.

Mostly includes tracking the state of the decoder, allowing the OUTPUT
queue to stream while the CAPTURE queue is inactive, handling resolution
change events, draining with V4L2_DEC_CMD_STOP, copying more metadata
from the src buffers to the dst buffers, etc.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/staging/media/meson/vdec/esparser.c   | 58 +++++-------
 drivers/staging/media/meson/vdec/vdec.c       | 92 ++++++++++++-------
 drivers/staging/media/meson/vdec/vdec.h       | 14 ++-
 .../staging/media/meson/vdec/vdec_helpers.c   | 85 ++++++++---------
 .../staging/media/meson/vdec/vdec_helpers.h   |  6 +-
 .../staging/media/meson/vdec/vdec_platform.c  | 10 ++
 6 files changed, 148 insertions(+), 117 deletions(-)

diff --git a/drivers/staging/media/meson/vdec/esparser.c b/drivers/staging/media/meson/vdec/esparser.c
index 95102a4bdc62..adc5c1e81a4c 100644
--- a/drivers/staging/media/meson/vdec/esparser.c
+++ b/drivers/staging/media/meson/vdec/esparser.c
@@ -79,22 +79,28 @@ static irqreturn_t esparser_isr(int irq, void *dev)
  * Also append a start code 000001ff at the end to trigger
  * the ESPARSER interrupt.
  */
-static u32 esparser_pad_start_code(struct vb2_buffer *vb)
+static u32 esparser_pad_start_code(struct amvdec_core *core, struct vb2_buffer *vb)
 {
 	u32 payload_size = vb2_get_plane_payload(vb, 0);
 	u32 pad_size = 0;
-	u8 *vaddr = vb2_plane_vaddr(vb, 0) + payload_size;
+	u8 *vaddr = vb2_plane_vaddr(vb, 0);
 
 	if (payload_size < ESPARSER_MIN_PACKET_SIZE) {
 		pad_size = ESPARSER_MIN_PACKET_SIZE - payload_size;
-		memset(vaddr, 0, pad_size);
+		memset(vaddr + payload_size, 0, pad_size);
 	}
 
-	memset(vaddr + pad_size, 0, SEARCH_PATTERN_LEN);
-	vaddr[pad_size]     = 0x00;
-	vaddr[pad_size + 1] = 0x00;
-	vaddr[pad_size + 2] = 0x01;
-	vaddr[pad_size + 3] = 0xff;
+	if ((payload_size + pad_size + SEARCH_PATTERN_LEN) >
+						vb2_plane_size(vb, 0)) {
+		dev_warn(core->dev, "%s: unable to pad start code\n", __func__);
+		return pad_size;
+	}
+
+	memset(vaddr + payload_size + pad_size, 0, SEARCH_PATTERN_LEN);
+	vaddr[payload_size + pad_size]     = 0x00;
+	vaddr[payload_size + pad_size + 1] = 0x00;
+	vaddr[payload_size + pad_size + 2] = 0x01;
+	vaddr[payload_size + pad_size + 3] = 0xff;
 
 	return pad_size;
 }
@@ -180,31 +186,27 @@ esparser_queue(struct amvdec_session *sess, struct vb2_v4l2_buffer *vbuf)
 	int ret;
 	struct vb2_buffer *vb = &vbuf->vb2_buf;
 	struct amvdec_core *core = sess->core;
-	struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
-	u32 num_dst_bufs = 0;
 	u32 payload_size = vb2_get_plane_payload(vb, 0);
 	dma_addr_t phy = vb2_dma_contig_plane_dma_addr(vb, 0);
 	u32 offset;
 	u32 pad_size;
 
-	if (codec_ops->num_pending_bufs)
-		num_dst_bufs = codec_ops->num_pending_bufs(sess);
-
-	num_dst_bufs += v4l2_m2m_num_dst_bufs_ready(sess->m2m_ctx);
-
-	if (esparser_vififo_get_free_space(sess) < payload_size ||
-	    atomic_read(&sess->esparser_queued_bufs) >= num_dst_bufs)
+	if (esparser_vififo_get_free_space(sess) < payload_size)
 		return -EAGAIN;
 
 	v4l2_m2m_src_buf_remove_by_buf(sess->m2m_ctx, vbuf);
 
 	offset = esparser_get_offset(sess);
 
-	amvdec_add_ts_reorder(sess, vb->timestamp, offset);
-	dev_dbg(core->dev, "esparser: ts = %llu pld_size = %u offset = %08X\n",
-		vb->timestamp, payload_size, offset);
+	amvdec_add_ts(sess, vb->timestamp, vbuf->timecode, offset, vbuf->flags);
+	dev_dbg(core->dev, "esparser: ts = %llu pld_size = %u offset = %08X flags = %08X\n",
+		vb->timestamp, payload_size, offset, vbuf->flags);
+
+	vbuf->flags = 0;
+	vbuf->field = V4L2_FIELD_NONE;
+	vbuf->sequence = sess->sequence_out++;
 
-	pad_size = esparser_pad_start_code(vb);
+	pad_size = esparser_pad_start_code(core, vb);
 	ret = esparser_write_data(core, phy, payload_size + pad_size);
 
 	if (ret <= 0) {
@@ -216,19 +218,7 @@ esparser_queue(struct amvdec_session *sess, struct vb2_v4l2_buffer *vbuf)
 		return 0;
 	}
 
-	/* We need to wait until we parse the first keyframe.
-	 * All buffers prior to the first keyframe must be dropped.
-	 */
-	if (!sess->keyframe_found)
-		usleep_range(1000, 2000);
-
-	if (sess->keyframe_found)
-		atomic_inc(&sess->esparser_queued_bufs);
-	else
-		amvdec_remove_ts(sess, vb->timestamp);
-
-	vbuf->flags = 0;
-	vbuf->field = V4L2_FIELD_NONE;
+	atomic_inc(&sess->esparser_queued_bufs);
 	v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
 
 	return 0;
diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
index a8a4c380ccc9..f03d9eba6e23 100644
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c
@@ -166,7 +166,10 @@ static void process_num_buffers(struct vb2_queue *q,
 {
 	const struct amvdec_format *fmt_out = sess->fmt_out;
 	unsigned int buffers_total = q->num_buffers + *num_buffers;
+	u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
 
+	if (q->num_buffers + *num_buffers < min_buf_capture)
+		*num_buffers = min_buf_capture - q->num_buffers;
 	if (is_reqbufs && buffers_total < fmt_out->min_buffers)
 		*num_buffers = fmt_out->min_buffers - q->num_buffers;
 	if (buffers_total > fmt_out->max_buffers)
@@ -191,7 +194,8 @@ static int vdec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
 	if (*num_planes) {
 		switch (q->type) {
 		case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-			if (*num_planes != 1 || sizes[0] < output_size)
+			if (*num_planes != 1 ||
+			    sizes[0] < sess->src_buffer_size)
 				return -EINVAL;
 			break;
 		case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
@@ -222,7 +226,7 @@ static int vdec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
 
 	switch (q->type) {
 	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-		sizes[0] = amvdec_get_output_size(sess);
+		sizes[0] = sess->src_buffer_size;
 		*num_planes = 1;
 		break;
 	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
@@ -248,6 +252,7 @@ static int vdec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
 		return -EINVAL;
 	}
 
+	sess->changed_format = 1;
 	return 0;
 }
 
@@ -259,10 +264,11 @@ static void vdec_vb2_buf_queue(struct vb2_buffer *vb)
 
 	v4l2_m2m_buf_queue(m2m_ctx, vbuf);
 
-	if (!sess->streamon_out || !sess->streamon_cap)
+	if (!sess->streamon_out)
 		return;
 
-	if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
+	if (sess->streamon_cap &&
+	    vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
 	    vdec_codec_needs_recycle(sess))
 		vdec_queue_recycle(sess, vb);
 
@@ -287,16 +293,22 @@ static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
 	else
 		sess->streamon_cap = 1;
 
-	if (!sess->streamon_out || !sess->streamon_cap)
+	if (!sess->streamon_out)
 		return 0;
 
 	if (sess->status == STATUS_NEEDS_RESUME &&
-	    q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+	    q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
+	    sess->changed_format) {
 		codec_ops->resume(sess);
 		sess->status = STATUS_RUNNING;
 		return 0;
 	}
 
+	if (sess->status == STATUS_RUNNING ||
+	    sess->status == STATUS_NEEDS_RESUME ||
+	    sess->status == STATUS_INIT)
+		return 0;
+
 	sess->vififo_size = SIZE_VIFIFO;
 	sess->vififo_vaddr =
 		dma_alloc_coherent(sess->core->dev, sess->vififo_size,
@@ -321,13 +333,14 @@ static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
 		goto vififo_free;
 
 	sess->sequence_cap = 0;
+	sess->sequence_out = 0;
 	if (vdec_codec_needs_recycle(sess))
 		sess->recycle_thread = kthread_run(vdec_recycle_thread, sess,
 						   "vdec_recycle");
 
-	sess->status = STATUS_RUNNING;
+	sess->status = STATUS_INIT;
 	core->cur_sess = sess;
-
+	schedule_work(&sess->esparser_queue_work);
 	return 0;
 
 vififo_free:
@@ -384,6 +397,7 @@ static void vdec_stop_streaming(struct vb2_queue *q)
 	struct vb2_v4l2_buffer *buf;
 
 	if (sess->status == STATUS_RUNNING ||
+	    sess->status == STATUS_INIT ||
 	    (sess->status == STATUS_NEEDS_RESUME &&
 	     (!sess->streamon_out || !sess->streamon_cap))) {
 		if (vdec_codec_needs_recycle(sess))
@@ -474,20 +488,33 @@ vdec_try_fmt_common(struct amvdec_session *sess, u32 size,
 	struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
 	struct v4l2_plane_pix_format *pfmt = pixmp->plane_fmt;
 	const struct amvdec_format *fmts = sess->core->platform->formats;
-	const struct amvdec_format *fmt_out;
+	const struct amvdec_format *fmt_out = NULL;
+	u32 output_size = 0;
 
 	memset(pfmt[0].reserved, 0, sizeof(pfmt[0].reserved));
 	memset(pixmp->reserved, 0, sizeof(pixmp->reserved));
 
-	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+	switch (f->type) {
+	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 		fmt_out = find_format(fmts, size, pixmp->pixelformat);
 		if (!fmt_out) {
 			pixmp->pixelformat = V4L2_PIX_FMT_MPEG2;
 			fmt_out = find_format(fmts, size, pixmp->pixelformat);
 		}
+		break;
+	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
+		fmt_out = sess->fmt_out;
+		break;
+	default:
+		return NULL;
+	}
 
-		pfmt[0].sizeimage =
-			get_output_size(pixmp->width, pixmp->height);
+	pixmp->width  = clamp(pixmp->width,  (u32)256, fmt_out->max_width);
+	pixmp->height = clamp(pixmp->height, (u32)144, fmt_out->max_height);
+	output_size = get_output_size(pixmp->width, pixmp->height);
+
+	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+		pfmt[0].sizeimage = sess->src_buffer_size;
 		pfmt[0].bytesperline = 0;
 		pixmp->num_planes = 1;
 	} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
@@ -497,35 +524,25 @@ vdec_try_fmt_common(struct amvdec_session *sess, u32 size,
 
 		memset(pfmt[1].reserved, 0, sizeof(pfmt[1].reserved));
 		if (pixmp->pixelformat == V4L2_PIX_FMT_NV12M) {
-			pfmt[0].sizeimage =
-				get_output_size(pixmp->width, pixmp->height);
+			pfmt[0].sizeimage = output_size;
 			pfmt[0].bytesperline = ALIGN(pixmp->width, 64);
 
-			pfmt[1].sizeimage =
-			      get_output_size(pixmp->width, pixmp->height) / 2;
+			pfmt[1].sizeimage = output_size / 2;
 			pfmt[1].bytesperline = ALIGN(pixmp->width, 64);
 			pixmp->num_planes = 2;
 		} else if (pixmp->pixelformat == V4L2_PIX_FMT_YUV420M) {
-			pfmt[0].sizeimage =
-				get_output_size(pixmp->width, pixmp->height);
+			pfmt[0].sizeimage = output_size;
 			pfmt[0].bytesperline = ALIGN(pixmp->width, 64);
 
-			pfmt[1].sizeimage =
-			      get_output_size(pixmp->width, pixmp->height) / 4;
+			pfmt[1].sizeimage = output_size / 4;
 			pfmt[1].bytesperline = ALIGN(pixmp->width, 64) / 2;
 
-			pfmt[2].sizeimage =
-			      get_output_size(pixmp->width, pixmp->height) / 4;
+			pfmt[2].sizeimage = output_size / 2;
 			pfmt[2].bytesperline = ALIGN(pixmp->width, 64) / 2;
 			pixmp->num_planes = 3;
 		}
-	} else {
-		return NULL;
 	}
 
-	pixmp->width  = clamp(pixmp->width,  (u32)256, fmt_out->max_width);
-	pixmp->height = clamp(pixmp->height, (u32)144, fmt_out->max_height);
-
 	if (pixmp->field == V4L2_FIELD_ANY)
 		pixmp->field = V4L2_FIELD_NONE;
 
@@ -584,6 +601,8 @@ static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 	orig_pixmp = *pixmp;
 
 	fmt_out = vdec_try_fmt_common(sess, num_formats, f);
+	if (!fmt_out)
+		return -EINVAL;
 
 	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
 		pixfmt_out = pixmp->pixelformat;
@@ -608,6 +627,7 @@ static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 		sess->ycbcr_enc = pixmp->ycbcr_enc;
 		sess->quantization = pixmp->quantization;
 		sess->xfer_func = pixmp->xfer_func;
+		sess->src_buffer_size = pixmp->plane_fmt[0].sizeimage;
 	}
 
 	memset(&format, 0, sizeof(format));
@@ -696,32 +716,35 @@ vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
 	if (ret)
 		return ret;
 
+	ret = v4l2_m2m_ioctl_decoder_cmd(file, fh, cmd);
+	if (ret)
+		return ret;
+
 	if (!(sess->streamon_out & sess->streamon_cap))
 		return 0;
 
-	/* Currently not handled since we do not support dynamic resolution
-	 * for MPEG2. We consider both queues streaming to mean that the
-	 * decoding session is started
-	 */
-	if (cmd->cmd == V4L2_DEC_CMD_START)
+	if (cmd->cmd == V4L2_DEC_CMD_START) {
+		sess->should_stop = 0;
 		return 0;
+	}
 
 	/* Should not happen */
 	if (cmd->cmd != V4L2_DEC_CMD_STOP)
 		return -EINVAL;
 
 	dev_dbg(dev, "Received V4L2_DEC_CMD_STOP\n");
-	sess->should_stop = 1;
 
-	vdec_wait_inactive(sess);
+	sess->should_stop = 1;
 
 	if (codec_ops->drain) {
+		vdec_wait_inactive(sess);
 		codec_ops->drain(sess);
 	} else if (codec_ops->eos_sequence) {
 		u32 len;
 		const u8 *data = codec_ops->eos_sequence(&len);
 
 		esparser_queue_eos(sess->core, data, len);
+		vdec_wait_inactive(sess);
 	}
 
 	return ret;
@@ -881,6 +904,7 @@ static int vdec_open(struct file *file)
 	sess->height = 720;
 	sess->pixelaspect.numerator = 1;
 	sess->pixelaspect.denominator = 1;
+	sess->src_buffer_size = SZ_1M;
 
 	INIT_LIST_HEAD(&sess->timestamps);
 	INIT_LIST_HEAD(&sess->bufs_recycle);
diff --git a/drivers/staging/media/meson/vdec/vdec.h b/drivers/staging/media/meson/vdec/vdec.h
index 0faa1ec4858e..f95445ac0658 100644
--- a/drivers/staging/media/meson/vdec/vdec.h
+++ b/drivers/staging/media/meson/vdec/vdec.h
@@ -29,13 +29,19 @@ struct amvdec_buffer {
  * struct amvdec_timestamp - stores a src timestamp along with a VIFIFO offset
  *
  * @list: used to make lists out of this struct
- * @ts: timestamp
+ * @tc: timecode from the v4l2 buffer
+ * @ts: timestamp from the VB2 buffer
  * @offset: offset in the VIFIFO where the associated packet was written
+ * @flags: flags from the v4l2 buffer
+ * @used_count: times this timestamp was checked for a match with a dst buffer
  */
 struct amvdec_timestamp {
 	struct list_head list;
+	struct v4l2_timecode tc;
 	u64 ts;
 	u32 offset;
+	u32 flags;
+	u32 used_count;
 };
 
 struct amvdec_session;
@@ -165,6 +171,7 @@ struct amvdec_format {
 
 enum amvdec_status {
 	STATUS_STOPPED,
+	STATUS_INIT,
 	STATUS_RUNNING,
 	STATUS_NEEDS_RESUME,
 };
@@ -180,6 +187,7 @@ enum amvdec_status {
  * @ctrl_min_buf_capture: V4L2 control V4L2_CID_MIN_BUFFERS_FOR_CAPTURE
  * @fmt_out: vdec pixel format for the OUTPUT queue
  * @pixfmt_cap: V4L2 pixel format for the CAPTURE queue
+ * @src_buffer_size: size in bytes of the OUTPUT buffers' only plane
  * @width: current picture width
  * @height: current picture height
  * @colorspace: current colorspace
@@ -221,6 +229,7 @@ struct amvdec_session {
 
 	const struct amvdec_format *fmt_out;
 	u32 pixfmt_cap;
+	u32 src_buffer_size;
 
 	u32 width;
 	u32 height;
@@ -235,10 +244,11 @@ struct amvdec_session {
 	struct work_struct esparser_queue_work;
 
 	unsigned int streamon_cap, streamon_out;
-	unsigned int sequence_cap;
+	unsigned int sequence_cap, sequence_out;
 	unsigned int should_stop;
 	unsigned int keyframe_found;
 	unsigned int num_dst_bufs;
+	unsigned int changed_format;
 
 	u8 canvas_alloc[MAX_CANVAS];
 	u32 canvas_num;
diff --git a/drivers/staging/media/meson/vdec/vdec_helpers.c b/drivers/staging/media/meson/vdec/vdec_helpers.c
index f16948bdbf2f..ff4333074197 100644
--- a/drivers/staging/media/meson/vdec/vdec_helpers.c
+++ b/drivers/staging/media/meson/vdec/vdec_helpers.c
@@ -200,33 +200,23 @@ int amvdec_set_canvases(struct amvdec_session *sess,
 }
 EXPORT_SYMBOL_GPL(amvdec_set_canvases);
 
-void amvdec_add_ts_reorder(struct amvdec_session *sess, u64 ts, u32 offset)
+void amvdec_add_ts(struct amvdec_session *sess, u64 ts,
+		   struct v4l2_timecode tc, u32 offset, u32 vbuf_flags)
 {
-	struct amvdec_timestamp *new_ts, *tmp;
+	struct amvdec_timestamp *new_ts;
 	unsigned long flags;
 
-	new_ts = kmalloc(sizeof(*new_ts), GFP_KERNEL);
+	new_ts = kzalloc(sizeof(*new_ts), GFP_KERNEL);
 	new_ts->ts = ts;
+	new_ts->tc = tc;
 	new_ts->offset = offset;
+	new_ts->flags = vbuf_flags;
 
 	spin_lock_irqsave(&sess->ts_spinlock, flags);
-
-	if (list_empty(&sess->timestamps))
-		goto add_tail;
-
-	list_for_each_entry(tmp, &sess->timestamps, list) {
-		if (ts <= tmp->ts) {
-			list_add_tail(&new_ts->list, &tmp->list);
-			goto unlock;
-		}
-	}
-
-add_tail:
 	list_add_tail(&new_ts->list, &sess->timestamps);
-unlock:
 	spin_unlock_irqrestore(&sess->ts_spinlock, flags);
 }
-EXPORT_SYMBOL_GPL(amvdec_add_ts_reorder);
+EXPORT_SYMBOL_GPL(amvdec_add_ts);
 
 void amvdec_remove_ts(struct amvdec_session *sess, u64 ts)
 {
@@ -251,8 +241,8 @@ EXPORT_SYMBOL_GPL(amvdec_remove_ts);
 
 static void dst_buf_done(struct amvdec_session *sess,
 			 struct vb2_v4l2_buffer *vbuf,
-			 u32 field,
-			 u64 timestamp)
+			 u32 field, u64 timestamp,
+			 struct v4l2_timecode timecode, u32 flags)
 {
 	struct device *dev = sess->core->dev_dec;
 	u32 output_size = amvdec_get_output_size(sess);
@@ -271,19 +261,23 @@ static void dst_buf_done(struct amvdec_session *sess,
 
 	vbuf->vb2_buf.timestamp = timestamp;
 	vbuf->sequence = sess->sequence_cap++;
+	vbuf->flags = flags;
+	vbuf->timecode = timecode;
 
 	if (sess->should_stop &&
-	    atomic_read(&sess->esparser_queued_bufs) <= 2) {
+	    atomic_read(&sess->esparser_queued_bufs) <= 1) {
 		const struct v4l2_event ev = { .type = V4L2_EVENT_EOS };
 
-		dev_dbg(dev, "Signaling EOS\n");
+		dev_dbg(dev, "Signaling EOS, sequence_cap = %u\n",
+			sess->sequence_cap - 1);
 		v4l2_event_queue_fh(&sess->fh, &ev);
 		vbuf->flags |= V4L2_BUF_FLAG_LAST;
 	} else if (sess->should_stop)
 		dev_dbg(dev, "should_stop, %u bufs remain\n",
 			atomic_read(&sess->esparser_queued_bufs));
 
-	dev_dbg(dev, "Buffer %u done\n", vbuf->vb2_buf.index);
+	dev_dbg(dev, "Buffer %u done, ts = %llu, flags = %08X\n",
+		vbuf->vb2_buf.index, timestamp, flags);
 	vbuf->field = field;
 	v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
 
@@ -297,7 +291,9 @@ void amvdec_dst_buf_done(struct amvdec_session *sess,
 	struct device *dev = sess->core->dev_dec;
 	struct amvdec_timestamp *tmp;
 	struct list_head *timestamps = &sess->timestamps;
+	struct v4l2_timecode timecode;
 	u64 timestamp;
+	u32 vbuf_flags;
 	unsigned long flags;
 
 	spin_lock_irqsave(&sess->ts_spinlock, flags);
@@ -312,11 +308,13 @@ void amvdec_dst_buf_done(struct amvdec_session *sess,
 
 	tmp = list_first_entry(timestamps, struct amvdec_timestamp, list);
 	timestamp = tmp->ts;
+	timecode = tmp->tc;
+	vbuf_flags = tmp->flags;
 	list_del(&tmp->list);
 	kfree(tmp);
 	spin_unlock_irqrestore(&sess->ts_spinlock, flags);
 
-	dst_buf_done(sess, vbuf, field, timestamp);
+	dst_buf_done(sess, vbuf, field, timestamp, timecode, vbuf_flags);
 	atomic_dec(&sess->esparser_queued_bufs);
 }
 EXPORT_SYMBOL_GPL(amvdec_dst_buf_done);
@@ -328,48 +326,43 @@ void amvdec_dst_buf_done_offset(struct amvdec_session *sess,
 	struct device *dev = sess->core->dev_dec;
 	struct amvdec_timestamp *match = NULL;
 	struct amvdec_timestamp *tmp, *n;
+	struct v4l2_timecode timecode = { 0 };
 	u64 timestamp = 0;
+	u32 vbuf_flags = 0;
 	unsigned long flags;
 
 	spin_lock_irqsave(&sess->ts_spinlock, flags);
 
 	/* Look for our vififo offset to get the corresponding timestamp. */
 	list_for_each_entry_safe(tmp, n, &sess->timestamps, list) {
-		s64 delta = (s64)offset - tmp->offset;
-
-		/* Offsets reported by codecs usually differ slightly,
-		 * so we need some wiggle room.
-		 * 4KiB being the minimum packet size, there is no risk here.
-		 */
-		if (delta > (-1 * (s32)SZ_4K) && delta < SZ_4K) {
-			match = tmp;
+		if (tmp->offset > offset) {
+			/*
+			 * Delete any record that remained unused for 32 match
+			 * checks
+			 */
+			if (tmp->used_count++ >= 32) {
+				list_del(&tmp->list);
+				kfree(tmp);
+			}
 			break;
 		}
 
-		if (!allow_drop)
-			continue;
-
-		/* Delete any timestamp entry that appears before our target
-		 * (not all src packets/timestamps lead to a frame)
-		 */
-		if (delta > 0 || delta < -1 * (s32)sess->vififo_size) {
-			atomic_dec(&sess->esparser_queued_bufs);
-			list_del(&tmp->list);
-			kfree(tmp);
-		}
+		match = tmp;
 	}
 
 	if (!match) {
-		dev_dbg(dev, "Buffer %u done but can't match offset (%08X)\n",
+		dev_err(dev, "Buffer %u done but can't match offset (%08X)\n",
 			vbuf->vb2_buf.index, offset);
 	} else {
 		timestamp = match->ts;
+		timecode = match->tc;
+		vbuf_flags = match->flags;
 		list_del(&match->list);
 		kfree(match);
 	}
 	spin_unlock_irqrestore(&sess->ts_spinlock, flags);
 
-	dst_buf_done(sess, vbuf, field, timestamp);
+	dst_buf_done(sess, vbuf, field, timestamp, timecode, vbuf_flags);
 	if (match)
 		atomic_dec(&sess->esparser_queued_bufs);
 }
@@ -420,7 +413,8 @@ void amvdec_src_change(struct amvdec_session *sess, u32 width,
 
 	v4l2_ctrl_s_ctrl(sess->ctrl_min_buf_capture, dpb_size);
 
-	/* Check if the capture queue is already configured well for our
+	/*
+	 * Check if the capture queue is already configured well for our
 	 * usecase. If so, keep decoding with it and do not send the event
 	 */
 	if (sess->width == width &&
@@ -430,6 +424,7 @@ void amvdec_src_change(struct amvdec_session *sess, u32 width,
 		return;
 	}
 
+	sess->changed_format = 0;
 	sess->width = width;
 	sess->height = height;
 	sess->status = STATUS_NEEDS_RESUME;
diff --git a/drivers/staging/media/meson/vdec/vdec_helpers.h b/drivers/staging/media/meson/vdec/vdec_helpers.h
index a455a9ee1cc2..165e6293ffba 100644
--- a/drivers/staging/media/meson/vdec/vdec_helpers.h
+++ b/drivers/staging/media/meson/vdec/vdec_helpers.h
@@ -44,13 +44,15 @@ void amvdec_dst_buf_done_offset(struct amvdec_session *sess,
 				u32 offset, u32 field, bool allow_drop);
 
 /**
- * amvdec_add_ts_reorder() - Add a timestamp to the list in chronological order
+ * amvdec_add_ts() - Add a timestamp to the list
  *
  * @sess: current session
  * @ts: timestamp to add
  * @offset: offset in the VIFIFO where the associated packet was written
+ * @flags the vb2_v4l2_buffer flags
  */
-void amvdec_add_ts_reorder(struct amvdec_session *sess, u64 ts, u32 offset);
+void amvdec_add_ts(struct amvdec_session *sess, u64 ts,
+		   struct v4l2_timecode tc, u32 offset, u32 flags);
 void amvdec_remove_ts(struct amvdec_session *sess, u64 ts);
 
 /**
diff --git a/drivers/staging/media/meson/vdec/vdec_platform.c b/drivers/staging/media/meson/vdec/vdec_platform.c
index ea39f8209ec7..066d4a055894 100644
--- a/drivers/staging/media/meson/vdec/vdec_platform.c
+++ b/drivers/staging/media/meson/vdec/vdec_platform.c
@@ -21,6 +21,7 @@ static const struct amvdec_format vdec_formats_gxbb[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG2,
 		.min_buffers = 8,
@@ -31,6 +32,7 @@ static const struct amvdec_format vdec_formats_gxbb[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	},
 };
 
@@ -45,6 +47,7 @@ static const struct amvdec_format vdec_formats_gxl[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG2,
 		.min_buffers = 8,
@@ -55,6 +58,7 @@ static const struct amvdec_format vdec_formats_gxl[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	},
 };
 
@@ -69,6 +73,7 @@ static const struct amvdec_format vdec_formats_gxm[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG2,
 		.min_buffers = 8,
@@ -79,6 +84,7 @@ static const struct amvdec_format vdec_formats_gxm[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	},
 };
 
@@ -93,6 +99,7 @@ static const struct amvdec_format vdec_formats_g12a[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG2,
 		.min_buffers = 8,
@@ -103,6 +110,7 @@ static const struct amvdec_format vdec_formats_g12a[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	},
 };
 
@@ -117,6 +125,7 @@ static const struct amvdec_format vdec_formats_sm1[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG2,
 		.min_buffers = 8,
@@ -127,6 +136,7 @@ static const struct amvdec_format vdec_formats_sm1[] = {
 		.codec_ops = &codec_mpeg12_ops,
 		.firmware_path = "meson/vdec/gxl_mpeg12.bin",
 		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, V4L2_PIX_FMT_YUV420M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED,
 	},
 };
 
-- 
2.22.0


_______________________________________________
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linux-amlogic@lists.infradead.org
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^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH v2 3/3] media: meson: vdec: add H.264 decoding support
  2019-11-26  9:37 [PATCH v2 0/3] media: meson: vdec: Add compliant H264 support Neil Armstrong
  2019-11-26  9:37 ` [PATCH v2 1/3] media: v4l2-mem2mem: mark DONE any OUTPUT queued buffer after CMD_STOP Neil Armstrong
  2019-11-26  9:38 ` [PATCH v2 2/3] media: meson: vdec: bring up to compliance Neil Armstrong
@ 2019-11-26  9:38 ` Neil Armstrong
  2 siblings, 0 replies; 4+ messages in thread
From: Neil Armstrong @ 2019-11-26  9:38 UTC (permalink / raw)
  To: mchehab, hans.verkuil
  Cc: Maxime Jourdan, Neil Armstrong, linux-kernel, linux-amlogic,
	linux-arm-kernel, linux-media

From: Maxime Jourdan <mjourdan@baylibre.com>

Add support for the H264 compressed format (V4L2_PIX_FMT_H264).

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/staging/media/meson/vdec/Makefile     |   2 +-
 drivers/staging/media/meson/vdec/codec_h264.c | 482 ++++++++++++++++++
 drivers/staging/media/meson/vdec/codec_h264.h |  14 +
 .../staging/media/meson/vdec/vdec_platform.c  |  61 +++
 4 files changed, 558 insertions(+), 1 deletion(-)
 create mode 100644 drivers/staging/media/meson/vdec/codec_h264.c
 create mode 100644 drivers/staging/media/meson/vdec/codec_h264.h

diff --git a/drivers/staging/media/meson/vdec/Makefile b/drivers/staging/media/meson/vdec/Makefile
index 6bea129084b7..711d990c760e 100644
--- a/drivers/staging/media/meson/vdec/Makefile
+++ b/drivers/staging/media/meson/vdec/Makefile
@@ -3,6 +3,6 @@
 
 meson-vdec-objs = esparser.o vdec.o vdec_helpers.o vdec_platform.o
 meson-vdec-objs += vdec_1.o
-meson-vdec-objs += codec_mpeg12.o
+meson-vdec-objs += codec_mpeg12.o codec_h264.o
 
 obj-$(CONFIG_VIDEO_MESON_VDEC) += meson-vdec.o
diff --git a/drivers/staging/media/meson/vdec/codec_h264.c b/drivers/staging/media/meson/vdec/codec_h264.c
new file mode 100644
index 000000000000..4528a6a01c3d
--- /dev/null
+++ b/drivers/staging/media/meson/vdec/codec_h264.c
@@ -0,0 +1,482 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "vdec_helpers.h"
+#include "dos_regs.h"
+
+#define SIZE_EXT_FW	(20 * SZ_1K)
+#define SIZE_WORKSPACE	0x1ee000
+#define SIZE_SEI	(8 * SZ_1K)
+
+/*
+ * Offset added by the firmware which must be substracted
+ * from the workspace phyaddr
+ */
+#define WORKSPACE_BUF_OFFSET	0x1000000
+
+/* ISR status */
+#define CMD_MASK		GENMASK(7, 0)
+#define CMD_SRC_CHANGE		1
+#define CMD_FRAMES_READY	2
+#define CMD_FATAL_ERROR		6
+#define CMD_BAD_WIDTH		7
+#define CMD_BAD_HEIGHT		8
+
+#define SEI_DATA_READY	BIT(15)
+
+/* Picture type */
+#define PIC_TOP_BOT	5
+#define PIC_BOT_TOP	6
+
+/* Size of Motion Vector per macroblock */
+#define MB_MV_SIZE	96
+
+/* Frame status data */
+#define PIC_STRUCT_BIT	5
+#define PIC_STRUCT_MASK	GENMASK(2, 0)
+#define BUF_IDX_MASK	GENMASK(4, 0)
+#define ERROR_FLAG	BIT(9)
+#define OFFSET_BIT	16
+#define OFFSET_MASK	GENMASK(15, 0)
+
+/* Bitstream parsed data */
+#define MB_TOTAL_BIT	8
+#define MB_TOTAL_MASK	GENMASK(15, 0)
+#define MB_WIDTH_MASK	GENMASK(7, 0)
+#define MAX_REF_BIT	24
+#define MAX_REF_MASK	GENMASK(6, 0)
+#define AR_IDC_BIT	16
+#define AR_IDC_MASK	GENMASK(7, 0)
+#define AR_PRESENT_FLAG	BIT(0)
+#define AR_EXTEND	0xff
+
+/*
+ * Buffer to send to the ESPARSER to signal End Of Stream for H.264.
+ * This is a 16x16 encoded picture that will trigger drain firmware-side.
+ * There is no known alternative.
+ */
+static const u8 eos_sequence[SZ_4K] = {
+	0x00, 0x00, 0x00, 0x01, 0x06, 0x05, 0xff, 0xe4, 0xdc, 0x45, 0xe9, 0xbd,
+	0xe6, 0xd9, 0x48, 0xb7,	0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef,
+	0x78, 0x32, 0x36, 0x34, 0x20, 0x2d, 0x20, 0x63,	0x6f, 0x72, 0x65, 0x20,
+	0x36, 0x37, 0x20, 0x72, 0x31, 0x31, 0x33, 0x30, 0x20, 0x38, 0x34, 0x37,
+	0x35, 0x39, 0x37, 0x37, 0x20, 0x2d, 0x20, 0x48, 0x2e, 0x32, 0x36, 0x34,
+	0x2f, 0x4d, 0x50, 0x45,	0x47, 0x2d, 0x34, 0x20, 0x41, 0x56, 0x43, 0x20,
+	0x63, 0x6f, 0x64, 0x65, 0x63, 0x20, 0x2d, 0x20,	0x43, 0x6f, 0x70, 0x79,
+	0x6c, 0x65, 0x66, 0x74, 0x20, 0x32, 0x30, 0x30, 0x33, 0x2d, 0x32, 0x30,
+	0x30, 0x39, 0x20, 0x2d, 0x20, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f,
+	0x77, 0x77, 0x77, 0x2e,	0x76, 0x69, 0x64, 0x65, 0x6f, 0x6c, 0x61, 0x6e,
+	0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x78, 0x32, 0x36,	0x34, 0x2e, 0x68, 0x74,
+	0x6d, 0x6c, 0x20, 0x2d, 0x20, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73,
+	0x3a, 0x20, 0x63, 0x61, 0x62, 0x61, 0x63, 0x3d, 0x31, 0x20, 0x72, 0x65,
+	0x66, 0x3d, 0x31, 0x20,	0x64, 0x65, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x3d,
+	0x31, 0x3a, 0x30, 0x3a, 0x30, 0x20, 0x61, 0x6e,	0x61, 0x6c, 0x79, 0x73,
+	0x65, 0x3d, 0x30, 0x78, 0x31, 0x3a, 0x30, 0x78, 0x31, 0x31, 0x31, 0x20,
+	0x6d, 0x65, 0x3d, 0x68, 0x65, 0x78, 0x20, 0x73, 0x75, 0x62, 0x6d, 0x65,
+	0x3d, 0x36, 0x20, 0x70,	0x73, 0x79, 0x5f, 0x72, 0x64, 0x3d, 0x31, 0x2e,
+	0x30, 0x3a, 0x30, 0x2e, 0x30, 0x20, 0x6d, 0x69,	0x78, 0x65, 0x64, 0x5f,
+	0x72, 0x65, 0x66, 0x3d, 0x30, 0x20, 0x6d, 0x65, 0x5f, 0x72, 0x61, 0x6e,
+	0x67, 0x65, 0x3d, 0x31, 0x36, 0x20, 0x63, 0x68, 0x72, 0x6f, 0x6d, 0x61,
+	0x5f, 0x6d, 0x65, 0x3d,	0x31, 0x20, 0x74, 0x72, 0x65, 0x6c, 0x6c, 0x69,
+	0x73, 0x3d, 0x30, 0x20, 0x38, 0x78, 0x38, 0x64,	0x63, 0x74, 0x3d, 0x30,
+	0x20, 0x63, 0x71, 0x6d, 0x3d, 0x30, 0x20, 0x64, 0x65, 0x61, 0x64, 0x7a,
+	0x6f, 0x6e, 0x65, 0x3d, 0x32, 0x31, 0x2c, 0x31, 0x31, 0x20, 0x63, 0x68,
+	0x72, 0x6f, 0x6d, 0x61,	0x5f, 0x71, 0x70, 0x5f, 0x6f, 0x66, 0x66, 0x73,
+	0x65, 0x74, 0x3d, 0x2d, 0x32, 0x20, 0x74, 0x68,	0x72, 0x65, 0x61, 0x64,
+	0x73, 0x3d, 0x31, 0x20, 0x6e, 0x72, 0x3d, 0x30, 0x20, 0x64, 0x65, 0x63,
+	0x69, 0x6d, 0x61, 0x74, 0x65, 0x3d, 0x31, 0x20, 0x6d, 0x62, 0x61, 0x66,
+	0x66, 0x3d, 0x30, 0x20,	0x62, 0x66, 0x72, 0x61, 0x6d, 0x65, 0x73, 0x3d,
+	0x30, 0x20, 0x6b, 0x65, 0x79, 0x69, 0x6e, 0x74,	0x3d, 0x32, 0x35, 0x30,
+	0x20, 0x6b, 0x65, 0x79, 0x69, 0x6e, 0x74, 0x5f, 0x6d, 0x69, 0x6e, 0x3d,
+	0x32, 0x35, 0x20, 0x73, 0x63, 0x65, 0x6e, 0x65, 0x63, 0x75, 0x74, 0x3d,
+	0x34, 0x30, 0x20, 0x72,	0x63, 0x3d, 0x61, 0x62, 0x72, 0x20, 0x62, 0x69,
+	0x74, 0x72, 0x61, 0x74, 0x65, 0x3d, 0x31, 0x30,	0x20, 0x72, 0x61, 0x74,
+	0x65, 0x74, 0x6f, 0x6c, 0x3d, 0x31, 0x2e, 0x30, 0x20, 0x71, 0x63, 0x6f,
+	0x6d, 0x70, 0x3d, 0x30, 0x2e, 0x36, 0x30, 0x20, 0x71, 0x70, 0x6d, 0x69,
+	0x6e, 0x3d, 0x31, 0x30,	0x20, 0x71, 0x70, 0x6d, 0x61, 0x78, 0x3d, 0x35,
+	0x31, 0x20, 0x71, 0x70, 0x73, 0x74, 0x65, 0x70,	0x3d, 0x34, 0x20, 0x69,
+	0x70, 0x5f, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x3d, 0x31, 0x2e, 0x34, 0x30,
+	0x20, 0x61, 0x71, 0x3d, 0x31, 0x3a, 0x31, 0x2e, 0x30, 0x30, 0x00, 0x80,
+	0x00, 0x00, 0x00, 0x01,	0x67, 0x4d, 0x40, 0x0a, 0x9a, 0x74, 0xf4, 0x20,
+	0x00, 0x00, 0x03, 0x00, 0x20, 0x00, 0x00, 0x06,	0x51, 0xe2, 0x44, 0xd4,
+	0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x32, 0xc8, 0x00, 0x00, 0x00, 0x01,
+	0x65, 0x88, 0x80, 0x20, 0x00, 0x08, 0x7f, 0xea, 0x6a, 0xe2, 0x99, 0xb6,
+	0x57, 0xae, 0x49, 0x30,	0xf5, 0xfe, 0x5e, 0x46, 0x0b, 0x72, 0x44, 0xc4,
+	0xe1, 0xfc, 0x62, 0xda, 0xf1, 0xfb, 0xa2, 0xdb,	0xd6, 0xbe, 0x5c, 0xd7,
+	0x24, 0xa3, 0xf5, 0xb9, 0x2f, 0x57, 0x16, 0x49, 0x75, 0x47, 0x77, 0x09,
+	0x5c, 0xa1, 0xb4, 0xc3, 0x4f, 0x60, 0x2b, 0xb0, 0x0c, 0xc8, 0xd6, 0x66,
+	0xba, 0x9b, 0x82, 0x29,	0x33, 0x92, 0x26, 0x99, 0x31, 0x1c, 0x7f, 0x9b,
+	0x00, 0x00, 0x01, 0x0ff,
+};
+
+static const u8 *codec_h264_eos_sequence(u32 *len)
+{
+	*len = ARRAY_SIZE(eos_sequence);
+	return eos_sequence;
+}
+
+struct codec_h264 {
+	/* H.264 decoder requires an extended firmware */
+	void      *ext_fw_vaddr;
+	dma_addr_t ext_fw_paddr;
+
+	/* Buffer for the H.264 Workspace */
+	void      *workspace_vaddr;
+	dma_addr_t workspace_paddr;
+
+	/* Buffer for the H.264 references MV */
+	void      *ref_vaddr;
+	dma_addr_t ref_paddr;
+	u32	   ref_size;
+
+	/* Buffer for parsed SEI data */
+	void      *sei_vaddr;
+	dma_addr_t sei_paddr;
+
+	u32 mb_width;
+	u32 mb_height;
+	u32 max_refs;
+};
+
+static int codec_h264_can_recycle(struct amvdec_core *core)
+{
+	return !amvdec_read_dos(core, AV_SCRATCH_7) ||
+	       !amvdec_read_dos(core, AV_SCRATCH_8);
+}
+
+static void codec_h264_recycle(struct amvdec_core *core, u32 buf_idx)
+{
+	/*
+	 * Tell the firmware it can recycle this buffer.
+	 * AV_SCRATCH_8 serves the same purpose.
+	 */
+	if (!amvdec_read_dos(core, AV_SCRATCH_7))
+		amvdec_write_dos(core, AV_SCRATCH_7, buf_idx + 1);
+	else
+		amvdec_write_dos(core, AV_SCRATCH_8, buf_idx + 1);
+}
+
+static int codec_h264_start(struct amvdec_session *sess)
+{
+	u32 workspace_offset;
+	struct amvdec_core *core = sess->core;
+	struct codec_h264 *h264 = sess->priv;
+
+	/* Allocate some memory for the H.264 decoder's state */
+	h264->workspace_vaddr =
+		dma_alloc_coherent(core->dev, SIZE_WORKSPACE,
+				   &h264->workspace_paddr, GFP_KERNEL);
+	if (!h264->workspace_vaddr)
+		return -ENOMEM;
+
+	/* Allocate some memory for the H.264 SEI dump */
+	h264->sei_vaddr = dma_alloc_coherent(core->dev, SIZE_SEI,
+					     &h264->sei_paddr, GFP_KERNEL);
+	if (!h264->sei_vaddr)
+		return -ENOMEM;
+
+	amvdec_write_dos_bits(core, POWER_CTL_VLD, BIT(9) | BIT(6));
+
+	workspace_offset = h264->workspace_paddr - WORKSPACE_BUF_OFFSET;
+	amvdec_write_dos(core, AV_SCRATCH_1, workspace_offset);
+	amvdec_write_dos(core, AV_SCRATCH_G, h264->ext_fw_paddr);
+	amvdec_write_dos(core, AV_SCRATCH_I, h264->sei_paddr -
+					     workspace_offset);
+
+	/* Enable "error correction" */
+	amvdec_write_dos(core, AV_SCRATCH_F,
+			 (amvdec_read_dos(core, AV_SCRATCH_F) & 0xffffffc3) |
+			 BIT(4) | BIT(7));
+
+	amvdec_write_dos(core, MDEC_PIC_DC_THRESH, 0x404038aa);
+
+	return 0;
+}
+
+static int codec_h264_stop(struct amvdec_session *sess)
+{
+	struct codec_h264 *h264 = sess->priv;
+	struct amvdec_core *core = sess->core;
+
+	if (h264->ext_fw_vaddr)
+		dma_free_coherent(core->dev, SIZE_EXT_FW,
+				  h264->ext_fw_vaddr, h264->ext_fw_paddr);
+
+	if (h264->workspace_vaddr)
+		dma_free_coherent(core->dev, SIZE_WORKSPACE,
+				 h264->workspace_vaddr, h264->workspace_paddr);
+
+	if (h264->ref_vaddr)
+		dma_free_coherent(core->dev, h264->ref_size,
+				  h264->ref_vaddr, h264->ref_paddr);
+
+	if (h264->sei_vaddr)
+		dma_free_coherent(core->dev, SIZE_SEI,
+				  h264->sei_vaddr, h264->sei_paddr);
+
+	return 0;
+}
+
+static int codec_h264_load_extended_firmware(struct amvdec_session *sess,
+					     const u8 *data, u32 len)
+{
+	struct codec_h264 *h264;
+	struct amvdec_core *core = sess->core;
+
+	if (len < SIZE_EXT_FW)
+		return -EINVAL;
+
+	h264 = kzalloc(sizeof(*h264), GFP_KERNEL);
+	if (!h264)
+		return -ENOMEM;
+
+	h264->ext_fw_vaddr = dma_alloc_coherent(core->dev, SIZE_EXT_FW,
+					      &h264->ext_fw_paddr, GFP_KERNEL);
+	if (!h264->ext_fw_vaddr) {
+		kfree(h264);
+		return -ENOMEM;
+	}
+
+	memcpy(h264->ext_fw_vaddr, data, SIZE_EXT_FW);
+	sess->priv = h264;
+
+	return 0;
+}
+
+static const struct v4l2_fract par_table[] = {
+	{ 1, 1 },   { 1, 1 },    { 12, 11 }, { 10, 11 },
+	{ 16, 11 }, { 40, 33 },  { 24, 11 }, { 20, 11 },
+	{ 32, 11 }, { 80, 33 },  { 18, 11 }, { 15, 11 },
+	{ 64, 33 }, { 160, 99 }, { 4, 3 },   { 3, 2 },
+	{ 2, 1 }
+};
+
+static void codec_h264_set_par(struct amvdec_session *sess)
+{
+	struct amvdec_core *core = sess->core;
+	u32 seq_info = amvdec_read_dos(core, AV_SCRATCH_2);
+	u32 ar_idc = (seq_info >> AR_IDC_BIT) & AR_IDC_MASK;
+
+	if (!(seq_info & AR_PRESENT_FLAG))
+		return;
+
+	if (ar_idc == AR_EXTEND) {
+		u32 ar_info = amvdec_read_dos(core, AV_SCRATCH_3);
+
+		sess->pixelaspect.numerator = ar_info & 0xffff;
+		sess->pixelaspect.denominator = (ar_info >> 16) & 0xffff;
+		return;
+	}
+
+	if (ar_idc >= ARRAY_SIZE(par_table))
+		return;
+
+	sess->pixelaspect = par_table[ar_idc];
+}
+
+static void codec_h264_resume(struct amvdec_session *sess)
+{
+	struct amvdec_core *core = sess->core;
+	struct codec_h264 *h264 = sess->priv;
+	u32 mb_width, mb_height, mb_total;
+
+	amvdec_set_canvases(sess, (u32[]){ ANC0_CANVAS_ADDR, 0 },
+				  (u32[]){ 24, 0 });
+
+	dev_dbg(core->dev, "max_refs = %u; actual_dpb_size = %u\n",
+		h264->max_refs, sess->num_dst_bufs);
+
+	/* Align to a multiple of 4 macroblocks */
+	mb_width = ALIGN(h264->mb_width, 4);
+	mb_height = ALIGN(h264->mb_height, 4);
+	mb_total = mb_width * mb_height;
+
+	h264->ref_size = mb_total * MB_MV_SIZE * h264->max_refs;
+	h264->ref_vaddr = dma_alloc_coherent(core->dev, h264->ref_size,
+					     &h264->ref_paddr, GFP_KERNEL);
+	if (!h264->ref_vaddr) {
+		amvdec_abort(sess);
+		return;
+	}
+
+	/* Address to store the references' MVs */
+	amvdec_write_dos(core, AV_SCRATCH_1, h264->ref_paddr);
+	/* End of ref MV */
+	amvdec_write_dos(core, AV_SCRATCH_4, h264->ref_paddr + h264->ref_size);
+
+	amvdec_write_dos(core, AV_SCRATCH_0, (h264->max_refs << 24) |
+					     (sess->num_dst_bufs << 16) |
+					     ((h264->max_refs - 1) << 8));
+}
+
+/**
+ * Configure the H.264 decoder when the parser detected a parameter set change
+ */
+static void codec_h264_src_change(struct amvdec_session *sess)
+{
+	struct amvdec_core *core = sess->core;
+	struct codec_h264 *h264 = sess->priv;
+	u32 parsed_info, mb_total;
+	u32 crop_infor, crop_bottom, crop_right;
+	u32 frame_width, frame_height;
+
+	sess->keyframe_found = 1;
+
+	parsed_info = amvdec_read_dos(core, AV_SCRATCH_1);
+
+	/* Total number of 16x16 macroblocks */
+	mb_total = (parsed_info >> MB_TOTAL_BIT) & MB_TOTAL_MASK;
+	/* Number of macroblocks per line */
+	h264->mb_width = parsed_info & MB_WIDTH_MASK;
+	/* Number of macroblock lines */
+	h264->mb_height = mb_total / h264->mb_width;
+
+	h264->max_refs = ((parsed_info >> MAX_REF_BIT) & MAX_REF_MASK) + 1;
+
+	crop_infor = amvdec_read_dos(core, AV_SCRATCH_6);
+	crop_bottom = (crop_infor & 0xff);
+	crop_right = (crop_infor >> 16) & 0xff;
+
+	frame_width = h264->mb_width * 16 - crop_right;
+	frame_height = h264->mb_height * 16 - crop_bottom;
+
+	dev_dbg(core->dev, "frame: %ux%u; crop: %u %u\n",
+		frame_width, frame_height, crop_right, crop_bottom);
+
+	codec_h264_set_par(sess);
+	amvdec_src_change(sess, frame_width, frame_height, h264->max_refs + 5);
+}
+
+/**
+ * The bitstream offset is split in half in 2 different registers.
+ * Fetch its MSB here, which location depends on the frame number.
+ */
+static u32 get_offset_msb(struct amvdec_core *core, int frame_num)
+{
+	int take_msb = frame_num % 2;
+	int reg_offset = (frame_num / 2) * 4;
+	u32 offset_msb = amvdec_read_dos(core, AV_SCRATCH_A + reg_offset);
+
+	if (take_msb)
+		return offset_msb & 0xffff0000;
+
+	return (offset_msb & 0x0000ffff) << 16;
+}
+
+static void codec_h264_frames_ready(struct amvdec_session *sess, u32 status)
+{
+	struct amvdec_core *core = sess->core;
+	int error_count;
+	int num_frames;
+	int i;
+
+	error_count = amvdec_read_dos(core, AV_SCRATCH_D);
+	num_frames = (status >> 8) & 0xff;
+	if (error_count) {
+		dev_warn(core->dev,
+			 "decoder error(s) happened, count %d\n", error_count);
+		amvdec_write_dos(core, AV_SCRATCH_D, 0);
+	}
+
+	for (i = 0; i < num_frames; i++) {
+		u32 frame_status = amvdec_read_dos(core, AV_SCRATCH_1 + i * 4);
+		u32 buffer_index = frame_status & BUF_IDX_MASK;
+		u32 pic_struct = (frame_status >> PIC_STRUCT_BIT) &
+				 PIC_STRUCT_MASK;
+		u32 offset = (frame_status >> OFFSET_BIT) & OFFSET_MASK;
+		u32 field = V4L2_FIELD_NONE;
+
+		/*
+		 * A buffer decode error means it was decoded,
+		 * but part of the picture will have artifacts.
+		 * Typical reason is a temporarily corrupted bitstream
+		 */
+		if (frame_status & ERROR_FLAG)
+			dev_dbg(core->dev, "Buffer %d decode error\n",
+				buffer_index);
+
+		if (pic_struct == PIC_TOP_BOT)
+			field = V4L2_FIELD_INTERLACED_TB;
+		else if (pic_struct == PIC_BOT_TOP)
+			field = V4L2_FIELD_INTERLACED_BT;
+
+		offset |= get_offset_msb(core, i);
+		amvdec_dst_buf_done_idx(sess, buffer_index, offset, field);
+	}
+}
+
+static irqreturn_t codec_h264_threaded_isr(struct amvdec_session *sess)
+{
+	struct amvdec_core *core = sess->core;
+	u32 status;
+	u32 size;
+	u8 cmd;
+
+	status = amvdec_read_dos(core, AV_SCRATCH_0);
+	cmd = status & CMD_MASK;
+
+	switch (cmd) {
+	case CMD_SRC_CHANGE:
+		codec_h264_src_change(sess);
+		break;
+	case CMD_FRAMES_READY:
+		codec_h264_frames_ready(sess, status);
+		break;
+	case CMD_FATAL_ERROR:
+		dev_err(core->dev, "H.264 decoder fatal error\n");
+		goto abort;
+	case CMD_BAD_WIDTH:
+		size = (amvdec_read_dos(core, AV_SCRATCH_1) + 1) * 16;
+		dev_err(core->dev, "Unsupported video width: %u\n", size);
+		goto abort;
+	case CMD_BAD_HEIGHT:
+		size = (amvdec_read_dos(core, AV_SCRATCH_1) + 1) * 16;
+		dev_err(core->dev, "Unsupported video height: %u\n", size);
+		goto abort;
+	case 0: /* Unused but not worth printing for */
+	case 9:
+		break;
+	default:
+		dev_info(core->dev, "Unexpected H264 ISR: %08X\n", cmd);
+		break;
+	}
+
+	if (cmd && cmd != CMD_SRC_CHANGE)
+		amvdec_write_dos(core, AV_SCRATCH_0, 0);
+
+	/* Decoder has some SEI data for us ; ignore */
+	if (amvdec_read_dos(core, AV_SCRATCH_J) & SEI_DATA_READY)
+		amvdec_write_dos(core, AV_SCRATCH_J, 0);
+
+	return IRQ_HANDLED;
+abort:
+	amvdec_abort(sess);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t codec_h264_isr(struct amvdec_session *sess)
+{
+	struct amvdec_core *core = sess->core;
+
+	amvdec_write_dos(core, ASSIST_MBOX1_CLR_REG, 1);
+
+	return IRQ_WAKE_THREAD;
+}
+
+struct amvdec_codec_ops codec_h264_ops = {
+	.start = codec_h264_start,
+	.stop = codec_h264_stop,
+	.load_extended_firmware = codec_h264_load_extended_firmware,
+	.isr = codec_h264_isr,
+	.threaded_isr = codec_h264_threaded_isr,
+	.can_recycle = codec_h264_can_recycle,
+	.recycle = codec_h264_recycle,
+	.eos_sequence = codec_h264_eos_sequence,
+	.resume = codec_h264_resume,
+};
diff --git a/drivers/staging/media/meson/vdec/codec_h264.h b/drivers/staging/media/meson/vdec/codec_h264.h
new file mode 100644
index 000000000000..7cb4fb86ff36
--- /dev/null
+++ b/drivers/staging/media/meson/vdec/codec_h264.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019 BayLibre, SAS
+ * Author: Maxime Jourdan <mjourdan@baylibre.com>
+ */
+
+#ifndef __MESON_VDEC_CODEC_H264_H_
+#define __MESON_VDEC_CODEC_H264_H_
+
+#include "vdec.h"
+
+extern struct amvdec_codec_ops codec_h264_ops;
+
+#endif
diff --git a/drivers/staging/media/meson/vdec/vdec_platform.c b/drivers/staging/media/meson/vdec/vdec_platform.c
index 066d4a055894..e9356a46828f 100644
--- a/drivers/staging/media/meson/vdec/vdec_platform.c
+++ b/drivers/staging/media/meson/vdec/vdec_platform.c
@@ -9,9 +9,22 @@
 
 #include "vdec_1.h"
 #include "codec_mpeg12.h"
+#include "codec_h264.h"
 
 static const struct amvdec_format vdec_formats_gxbb[] = {
 	{
+		.pixfmt = V4L2_PIX_FMT_H264,
+		.min_buffers = 2,
+		.max_buffers = 24,
+		.max_width = 1920,
+		.max_height = 1080,
+		.vdec_ops = &vdec_1_ops,
+		.codec_ops = &codec_h264_ops,
+		.firmware_path = "meson/vdec/gxbb_h264.bin",
+		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED |
+			 V4L2_FMT_FLAG_DYN_RESOLUTION,
+	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG1,
 		.min_buffers = 8,
 		.max_buffers = 8,
@@ -38,6 +51,18 @@ static const struct amvdec_format vdec_formats_gxbb[] = {
 
 static const struct amvdec_format vdec_formats_gxl[] = {
 	{
+		.pixfmt = V4L2_PIX_FMT_H264,
+		.min_buffers = 2,
+		.max_buffers = 24,
+		.max_width = 3840,
+		.max_height = 2160,
+		.vdec_ops = &vdec_1_ops,
+		.codec_ops = &codec_h264_ops,
+		.firmware_path = "meson/vdec/gxl_h264.bin",
+		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED |
+			 V4L2_FMT_FLAG_DYN_RESOLUTION,
+	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG1,
 		.min_buffers = 8,
 		.max_buffers = 8,
@@ -64,6 +89,18 @@ static const struct amvdec_format vdec_formats_gxl[] = {
 
 static const struct amvdec_format vdec_formats_gxm[] = {
 	{
+		.pixfmt = V4L2_PIX_FMT_H264,
+		.min_buffers = 2,
+		.max_buffers = 24,
+		.max_width = 3840,
+		.max_height = 2160,
+		.vdec_ops = &vdec_1_ops,
+		.codec_ops = &codec_h264_ops,
+		.firmware_path = "meson/vdec/gxm_h264.bin",
+		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED |
+			 V4L2_FMT_FLAG_DYN_RESOLUTION,
+	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG1,
 		.min_buffers = 8,
 		.max_buffers = 8,
@@ -90,6 +127,18 @@ static const struct amvdec_format vdec_formats_gxm[] = {
 
 static const struct amvdec_format vdec_formats_g12a[] = {
 	{
+		.pixfmt = V4L2_PIX_FMT_H264,
+		.min_buffers = 2,
+		.max_buffers = 24,
+		.max_width = 3840,
+		.max_height = 2160,
+		.vdec_ops = &vdec_1_ops,
+		.codec_ops = &codec_h264_ops,
+		.firmware_path = "meson/vdec/g12a_h264.bin",
+		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED |
+			 V4L2_FMT_FLAG_DYN_RESOLUTION,
+	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG1,
 		.min_buffers = 8,
 		.max_buffers = 8,
@@ -116,6 +165,18 @@ static const struct amvdec_format vdec_formats_g12a[] = {
 
 static const struct amvdec_format vdec_formats_sm1[] = {
 	{
+		.pixfmt = V4L2_PIX_FMT_H264,
+		.min_buffers = 2,
+		.max_buffers = 24,
+		.max_width = 3840,
+		.max_height = 2160,
+		.vdec_ops = &vdec_1_ops,
+		.codec_ops = &codec_h264_ops,
+		.firmware_path = "meson/vdec/g12a_h264.bin",
+		.pixfmts_cap = { V4L2_PIX_FMT_NV12M, 0 },
+		.flags = V4L2_FMT_FLAG_COMPRESSED |
+			 V4L2_FMT_FLAG_DYN_RESOLUTION,
+	}, {
 		.pixfmt = V4L2_PIX_FMT_MPEG1,
 		.min_buffers = 8,
 		.max_buffers = 8,
-- 
2.22.0


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-- links below jump to the message on this page --
2019-11-26  9:37 [PATCH v2 0/3] media: meson: vdec: Add compliant H264 support Neil Armstrong
2019-11-26  9:37 ` [PATCH v2 1/3] media: v4l2-mem2mem: mark DONE any OUTPUT queued buffer after CMD_STOP Neil Armstrong
2019-11-26  9:38 ` [PATCH v2 2/3] media: meson: vdec: bring up to compliance Neil Armstrong
2019-11-26  9:38 ` [PATCH v2 3/3] media: meson: vdec: add H.264 decoding support Neil Armstrong

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