Linux-Media Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH v9] media: imx: add csc/scaler mem2mem device
@ 2019-08-14 12:24 Philipp Zabel
  2019-08-14 12:35 ` Philipp Zabel
  2019-08-16 23:17 ` Steve Longerbeam
  0 siblings, 2 replies; 4+ messages in thread
From: Philipp Zabel @ 2019-08-14 12:24 UTC (permalink / raw)
  To: linux-media; +Cc: Steve Longerbeam, kernel

Add a single imx-media mem2mem video device that uses the IPU IC PP
(image converter post processing) task for scaling and colorspace
conversion.
On i.MX6Q/DL SoCs with two IPUs currently only the first IPU is used.

The hardware only supports writing to destination buffers up to
1024x1024 pixels in a single pass, arbitrary sizes can be achieved
by rendering multiple tiles per frame.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
[slongerbeam@gmail.com: use ipu_image_convert_adjust(), fix
 device_run() error handling, add missing media-device header,
 unregister and remove the mem2mem device in error paths in
 imx_media_probe_complete() and in imx_media_remove(), updated
 for sync subdev registration]
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
---
Changes since v8 [1]:
 - Change subject to be more descriptive.
 - Call video_unregister_device unconditionally, it handles gracefully
   handles unregistered video devices.
 - Rebased onto commit 6d01b7ff5233 ("media: staging/imx: Switch to sync
   registration for IPU subdevs")
 - propagate colorimetry info from queue format to image converter
 - replace devm_kzalloc by kzalloc and release on video_device.release
   to avoid priv being freed immediately when the driver is unbound
   while a video device is still opened. This allows to get rid of
   imx_media_csc_scaler_device_remove() altogether.
 - update SPDX license identifier

[1] https://patchwork.linuxtv.org/patch/55776/
---
 drivers/staging/media/imx/Kconfig             |   1 +
 drivers/staging/media/imx/Makefile            |   3 +-
 .../staging/media/imx/imx-media-csc-scaler.c  | 925 ++++++++++++++++++
 drivers/staging/media/imx/imx-media-dev.c     |  28 +-
 .../staging/media/imx/imx-media-internal-sd.c |   4 +
 drivers/staging/media/imx/imx-media.h         |  12 +
 6 files changed, 971 insertions(+), 2 deletions(-)
 create mode 100644 drivers/staging/media/imx/imx-media-csc-scaler.c

diff --git a/drivers/staging/media/imx/Kconfig b/drivers/staging/media/imx/Kconfig
index 4c726345dc25..56b4d7ea3022 100644
--- a/drivers/staging/media/imx/Kconfig
+++ b/drivers/staging/media/imx/Kconfig
@@ -7,6 +7,7 @@ config VIDEO_IMX_MEDIA
 	depends on HAS_DMA
 	select VIDEOBUF2_DMA_CONTIG
 	select V4L2_FWNODE
+	select V4L2_MEM2MEM_DEV
 	help
 	  Say yes here to enable support for video4linux media controller
 	  driver for the i.MX5/6 SOC.
diff --git a/drivers/staging/media/imx/Makefile b/drivers/staging/media/imx/Makefile
index aa6c4b4ad37e..9bd9e873ba7c 100644
--- a/drivers/staging/media/imx/Makefile
+++ b/drivers/staging/media/imx/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 imx6-media-objs := imx-media-dev.o imx-media-internal-sd.o \
-	imx-ic-common.o imx-ic-prp.o imx-ic-prpencvf.o imx-media-vdic.o
+	imx-ic-common.o imx-ic-prp.o imx-ic-prpencvf.o imx-media-vdic.o \
+	imx-media-csc-scaler.o
 
 imx-media-common-objs := imx-media-capture.o imx-media-dev-common.o \
 	imx-media-of.o imx-media-utils.o
diff --git a/drivers/staging/media/imx/imx-media-csc-scaler.c b/drivers/staging/media/imx/imx-media-csc-scaler.c
new file mode 100644
index 000000000000..0cebb013831d
--- /dev/null
+++ b/drivers/staging/media/imx/imx-media-csc-scaler.c
@@ -0,0 +1,925 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * i.MX IPUv3 IC PP mem2mem CSC/Scaler driver
+ *
+ * Copyright (C) 2011 Pengutronix, Sascha Hauer
+ * Copyright (C) 2018 Pengutronix, Philipp Zabel
+ */
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/version.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <video/imx-ipu-v3.h>
+#include <video/imx-ipu-image-convert.h>
+
+#include <media/media-device.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "imx-media.h"
+
+#define fh_to_ctx(__fh)	container_of(__fh, struct ipu_csc_scaler_ctx, fh)
+
+enum {
+	V4L2_M2M_SRC = 0,
+	V4L2_M2M_DST = 1,
+};
+
+struct ipu_csc_scaler_priv {
+	struct imx_media_video_dev	vdev;
+
+	struct v4l2_m2m_dev		*m2m_dev;
+	struct device			*dev;
+
+	struct imx_media_dev		*md;
+
+	struct mutex			mutex;	/* mem2mem device mutex */
+};
+
+#define vdev_to_priv(v) container_of(v, struct ipu_csc_scaler_priv, vdev)
+
+/* Per-queue, driver-specific private data */
+struct ipu_csc_scaler_q_data {
+	struct v4l2_pix_format		cur_fmt;
+	struct v4l2_rect		rect;
+};
+
+struct ipu_csc_scaler_ctx {
+	struct ipu_csc_scaler_priv	*priv;
+
+	struct v4l2_fh			fh;
+	struct ipu_csc_scaler_q_data	q_data[2];
+	struct ipu_image_convert_ctx	*icc;
+
+	struct v4l2_ctrl_handler	ctrl_hdlr;
+	int				rotate;
+	bool				hflip;
+	bool				vflip;
+	enum ipu_rotate_mode		rot_mode;
+	unsigned int			sequence;
+};
+
+static struct ipu_csc_scaler_q_data *get_q_data(struct ipu_csc_scaler_ctx *ctx,
+						enum v4l2_buf_type type)
+{
+	if (V4L2_TYPE_IS_OUTPUT(type))
+		return &ctx->q_data[V4L2_M2M_SRC];
+	else
+		return &ctx->q_data[V4L2_M2M_DST];
+}
+
+/*
+ * mem2mem callbacks
+ */
+
+static void job_abort(void *_ctx)
+{
+	struct ipu_csc_scaler_ctx *ctx = _ctx;
+
+	if (ctx->icc)
+		ipu_image_convert_abort(ctx->icc);
+}
+
+static void ipu_ic_pp_complete(struct ipu_image_convert_run *run, void *_ctx)
+{
+	struct ipu_csc_scaler_ctx *ctx = _ctx;
+	struct ipu_csc_scaler_priv *priv = ctx->priv;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
+
+	src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+	dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+
+	v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
+
+	src_buf->sequence = dst_buf->sequence = ctx->sequence++;
+
+	v4l2_m2m_buf_done(src_buf, run->status ? VB2_BUF_STATE_ERROR :
+						 VB2_BUF_STATE_DONE);
+	v4l2_m2m_buf_done(dst_buf, run->status ? VB2_BUF_STATE_ERROR :
+						 VB2_BUF_STATE_DONE);
+
+	v4l2_m2m_job_finish(priv->m2m_dev, ctx->fh.m2m_ctx);
+	kfree(run);
+}
+
+static void device_run(void *_ctx)
+{
+	struct ipu_csc_scaler_ctx *ctx = _ctx;
+	struct ipu_csc_scaler_priv *priv = ctx->priv;
+	struct vb2_v4l2_buffer *src_buf, *dst_buf;
+	struct ipu_image_convert_run *run;
+	int ret;
+
+	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+
+	run = kzalloc(sizeof(*run), GFP_KERNEL);
+	if (!run)
+		goto err;
+
+	run->ctx = ctx->icc;
+	run->in_phys = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
+	run->out_phys = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
+
+	ret = ipu_image_convert_queue(run);
+	if (ret < 0) {
+		v4l2_err(ctx->priv->vdev.vfd->v4l2_dev,
+			 "%s: failed to queue: %d\n", __func__, ret);
+		goto err;
+	}
+
+	return;
+
+err:
+	v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+	v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+	v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
+	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
+	v4l2_m2m_job_finish(priv->m2m_dev, ctx->fh.m2m_ctx);
+}
+
+/*
+ * Video ioctls
+ */
+static int ipu_csc_scaler_querycap(struct file *file, void *priv,
+				   struct v4l2_capability *cap)
+{
+	strscpy(cap->driver, "imx-media-csc-scaler", sizeof(cap->driver));
+	strscpy(cap->card, "imx-media-csc-scaler", sizeof(cap->card));
+	strscpy(cap->bus_info, "platform:imx-media-csc-scaler",
+		sizeof(cap->bus_info));
+
+	return 0;
+}
+
+static int ipu_csc_scaler_enum_fmt(struct file *file, void *fh,
+				   struct v4l2_fmtdesc *f)
+{
+	u32 fourcc;
+	int ret;
+
+	ret = imx_media_enum_format(&fourcc, f->index, CS_SEL_ANY);
+	if (ret)
+		return ret;
+
+	f->pixelformat = fourcc;
+
+	return 0;
+}
+
+static int ipu_csc_scaler_g_fmt(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
+	struct ipu_csc_scaler_q_data *q_data;
+
+	q_data = get_q_data(ctx, f->type);
+
+	f->fmt.pix = q_data->cur_fmt;
+
+	return 0;
+}
+
+static int ipu_csc_scaler_try_fmt(struct file *file, void *priv,
+				  struct v4l2_format *f)
+{
+	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
+	struct ipu_csc_scaler_q_data *q_data = get_q_data(ctx, f->type);
+	struct ipu_image test_in, test_out;
+	enum v4l2_field field;
+
+	field = f->fmt.pix.field;
+	if (field == V4L2_FIELD_ANY)
+		field = V4L2_FIELD_NONE;
+	else if (field != V4L2_FIELD_NONE)
+		return -EINVAL;
+
+	if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+		struct ipu_csc_scaler_q_data *q_data_in =
+			get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+
+		test_out.pix = f->fmt.pix;
+		test_in.pix = q_data_in->cur_fmt;
+	} else {
+		struct ipu_csc_scaler_q_data *q_data_out =
+			get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+
+		test_in.pix = f->fmt.pix;
+		test_out.pix = q_data_out->cur_fmt;
+	}
+
+	ipu_image_convert_adjust(&test_in, &test_out, ctx->rot_mode);
+
+	f->fmt.pix = (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
+		test_out.pix : test_in.pix;
+
+	if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+		f->fmt.pix.colorspace = q_data->cur_fmt.colorspace;
+		f->fmt.pix.ycbcr_enc = q_data->cur_fmt.ycbcr_enc;
+		f->fmt.pix.xfer_func = q_data->cur_fmt.xfer_func;
+		f->fmt.pix.quantization = q_data->cur_fmt.quantization;
+	} else if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT) {
+		f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
+		f->fmt.pix.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
+		f->fmt.pix.xfer_func = V4L2_XFER_FUNC_DEFAULT;
+		f->fmt.pix.quantization = V4L2_QUANTIZATION_DEFAULT;
+	}
+
+	return 0;
+}
+
+static int ipu_csc_scaler_s_fmt(struct file *file, void *priv,
+				struct v4l2_format *f)
+{
+	struct ipu_csc_scaler_q_data *q_data;
+	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
+	struct vb2_queue *vq;
+	int ret;
+
+	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+	if (vb2_is_busy(vq)) {
+		v4l2_err(ctx->priv->vdev.vfd->v4l2_dev, "%s: queue busy\n",
+			 __func__);
+		return -EBUSY;
+	}
+
+	q_data = get_q_data(ctx, f->type);
+
+	ret = ipu_csc_scaler_try_fmt(file, priv, f);
+	if (ret < 0)
+		return ret;
+
+	q_data->cur_fmt.width = f->fmt.pix.width;
+	q_data->cur_fmt.height = f->fmt.pix.height;
+	q_data->cur_fmt.pixelformat = f->fmt.pix.pixelformat;
+	q_data->cur_fmt.field = f->fmt.pix.field;
+	q_data->cur_fmt.bytesperline = f->fmt.pix.bytesperline;
+	q_data->cur_fmt.sizeimage = f->fmt.pix.sizeimage;
+
+	/* Reset cropping/composing rectangle */
+	q_data->rect.left = 0;
+	q_data->rect.top = 0;
+	q_data->rect.width = q_data->cur_fmt.width;
+	q_data->rect.height = q_data->cur_fmt.height;
+
+	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+		/* Set colorimetry on the output queue */
+		q_data->cur_fmt.colorspace = f->fmt.pix.colorspace;
+		q_data->cur_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
+		q_data->cur_fmt.xfer_func = f->fmt.pix.xfer_func;
+		q_data->cur_fmt.quantization = f->fmt.pix.quantization;
+		/* Propagate colorimetry to the capture queue */
+		q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+		q_data->cur_fmt.colorspace = f->fmt.pix.colorspace;
+		q_data->cur_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
+		q_data->cur_fmt.xfer_func = f->fmt.pix.xfer_func;
+		q_data->cur_fmt.quantization = f->fmt.pix.quantization;
+	}
+
+	/*
+	 * TODO: Setting colorimetry on the capture queue is currently not
+	 * supported by the V4L2 API
+	 */
+
+	return 0;
+}
+
+static int ipu_csc_scaler_g_selection(struct file *file, void *priv,
+				      struct v4l2_selection *s)
+{
+	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
+	struct ipu_csc_scaler_q_data *q_data;
+
+	switch (s->target) {
+	case V4L2_SEL_TGT_CROP:
+	case V4L2_SEL_TGT_CROP_DEFAULT:
+	case V4L2_SEL_TGT_CROP_BOUNDS:
+		if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+			return -EINVAL;
+		q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+		break;
+	case V4L2_SEL_TGT_COMPOSE:
+	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+		if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+			return -EINVAL;
+		q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (s->target == V4L2_SEL_TGT_CROP ||
+	    s->target == V4L2_SEL_TGT_COMPOSE) {
+		s->r = q_data->rect;
+	} else {
+		s->r.left = 0;
+		s->r.top = 0;
+		s->r.width = q_data->cur_fmt.width;
+		s->r.height = q_data->cur_fmt.height;
+	}
+
+	return 0;
+}
+
+static int ipu_csc_scaler_s_selection(struct file *file, void *priv,
+				      struct v4l2_selection *s)
+{
+	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
+	struct ipu_csc_scaler_q_data *q_data;
+
+	switch (s->target) {
+	case V4L2_SEL_TGT_CROP:
+		if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+			return -EINVAL;
+		break;
+	case V4L2_SEL_TGT_COMPOSE:
+		if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+			return -EINVAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
+	    s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
+		return -EINVAL;
+
+	q_data = get_q_data(ctx, s->type);
+
+	/* The input's frame width to the IC must be a multiple of 8 pixels
+	 * When performing resizing the frame width must be multiple of burst
+	 * size - 8 or 16 pixels as defined by CB#_BURST_16 parameter.
+	 */
+	if (s->flags & V4L2_SEL_FLAG_GE)
+		s->r.width = round_up(s->r.width, 8);
+	if (s->flags & V4L2_SEL_FLAG_LE)
+		s->r.width = round_down(s->r.width, 8);
+	s->r.width = clamp_t(unsigned int, s->r.width, 8,
+			     round_down(q_data->cur_fmt.width, 8));
+	s->r.height = clamp_t(unsigned int, s->r.height, 1,
+			      q_data->cur_fmt.height);
+	s->r.left = clamp_t(unsigned int, s->r.left, 0,
+			    q_data->cur_fmt.width - s->r.width);
+	s->r.top = clamp_t(unsigned int, s->r.top, 0,
+			   q_data->cur_fmt.height - s->r.height);
+
+	/* V4L2_SEL_FLAG_KEEP_CONFIG is only valid for subdevices */
+	q_data->rect = s->r;
+
+	return 0;
+}
+
+static const struct v4l2_ioctl_ops ipu_csc_scaler_ioctl_ops = {
+	.vidioc_querycap		= ipu_csc_scaler_querycap,
+
+	.vidioc_enum_fmt_vid_cap	= ipu_csc_scaler_enum_fmt,
+	.vidioc_g_fmt_vid_cap		= ipu_csc_scaler_g_fmt,
+	.vidioc_try_fmt_vid_cap		= ipu_csc_scaler_try_fmt,
+	.vidioc_s_fmt_vid_cap		= ipu_csc_scaler_s_fmt,
+
+	.vidioc_enum_fmt_vid_out	= ipu_csc_scaler_enum_fmt,
+	.vidioc_g_fmt_vid_out		= ipu_csc_scaler_g_fmt,
+	.vidioc_try_fmt_vid_out		= ipu_csc_scaler_try_fmt,
+	.vidioc_s_fmt_vid_out		= ipu_csc_scaler_s_fmt,
+
+	.vidioc_g_selection		= ipu_csc_scaler_g_selection,
+	.vidioc_s_selection		= ipu_csc_scaler_s_selection,
+
+	.vidioc_reqbufs			= v4l2_m2m_ioctl_reqbufs,
+	.vidioc_querybuf		= v4l2_m2m_ioctl_querybuf,
+
+	.vidioc_qbuf			= v4l2_m2m_ioctl_qbuf,
+	.vidioc_expbuf			= v4l2_m2m_ioctl_expbuf,
+	.vidioc_dqbuf			= v4l2_m2m_ioctl_dqbuf,
+	.vidioc_create_bufs		= v4l2_m2m_ioctl_create_bufs,
+	.vidioc_prepare_buf		= v4l2_m2m_ioctl_prepare_buf,
+
+	.vidioc_streamon		= v4l2_m2m_ioctl_streamon,
+	.vidioc_streamoff		= v4l2_m2m_ioctl_streamoff,
+
+	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
+};
+
+/*
+ * Queue operations
+ */
+
+static int ipu_csc_scaler_queue_setup(struct vb2_queue *vq,
+				      unsigned int *nbuffers,
+				      unsigned int *nplanes,
+				      unsigned int sizes[],
+				      struct device *alloc_devs[])
+{
+	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vq);
+	struct ipu_csc_scaler_q_data *q_data;
+	unsigned int size, count = *nbuffers;
+
+	q_data = get_q_data(ctx, vq->type);
+
+	size = q_data->cur_fmt.sizeimage;
+
+	*nbuffers = count;
+
+	if (*nplanes)
+		return sizes[0] < size ? -EINVAL : 0;
+
+	*nplanes = 1;
+	sizes[0] = size;
+
+	dev_dbg(ctx->priv->dev, "get %d buffer(s) of size %d each.\n",
+		count, size);
+
+	return 0;
+}
+
+static int ipu_csc_scaler_buf_prepare(struct vb2_buffer *vb)
+{
+	struct vb2_queue *vq = vb->vb2_queue;
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vq);
+	struct ipu_csc_scaler_q_data *q_data;
+	unsigned long size;
+
+	dev_dbg(ctx->priv->dev, "type: %d\n", vq->type);
+
+	if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
+		if (vbuf->field == V4L2_FIELD_ANY)
+			vbuf->field = V4L2_FIELD_NONE;
+		if (vbuf->field != V4L2_FIELD_NONE) {
+			dev_dbg(ctx->priv->dev, "%s: field isn't supported\n",
+				__func__);
+			return -EINVAL;
+		}
+	}
+
+	q_data = get_q_data(ctx, vq->type);
+	size = q_data->cur_fmt.sizeimage;
+
+	if (vb2_plane_size(vb, 0) < size) {
+		dev_dbg(ctx->priv->dev,
+			"%s: data will not fit into plane (%lu < %lu)\n",
+			__func__, vb2_plane_size(vb, 0), size);
+		return -EINVAL;
+	}
+
+	vb2_set_plane_payload(vb, 0, size);
+
+	return 0;
+}
+
+static void ipu_csc_scaler_buf_queue(struct vb2_buffer *vb)
+{
+	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+
+	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, to_vb2_v4l2_buffer(vb));
+}
+
+static void ipu_image_from_q_data(struct ipu_image *im,
+				  struct ipu_csc_scaler_q_data *q_data)
+{
+	struct v4l2_pix_format *fmt = &q_data->cur_fmt;
+
+	im->pix = *fmt;
+	if (fmt->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
+		im->pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+	if (fmt->quantization == V4L2_QUANTIZATION_DEFAULT)
+		im->pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+	im->rect = q_data->rect;
+}
+
+static int ipu_csc_scaler_start_streaming(struct vb2_queue *q,
+					  unsigned int count)
+{
+	const enum ipu_ic_task ic_task = IC_TASK_POST_PROCESSOR;
+	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(q);
+	struct ipu_csc_scaler_priv *priv = ctx->priv;
+	struct ipu_soc *ipu = priv->md->ipu[0];
+	struct ipu_csc_scaler_q_data *q_data;
+	struct vb2_queue *other_q;
+	struct ipu_image in, out;
+
+	other_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+				  (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
+				  V4L2_BUF_TYPE_VIDEO_OUTPUT :
+				  V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	if (!vb2_is_streaming(other_q))
+		return 0;
+
+	if (ctx->icc) {
+		v4l2_warn(ctx->priv->vdev.vfd->v4l2_dev, "removing old ICC\n");
+		ipu_image_convert_unprepare(ctx->icc);
+	}
+
+	q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+	ipu_image_from_q_data(&in, q_data);
+
+	q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	ipu_image_from_q_data(&out, q_data);
+
+	ctx->icc = ipu_image_convert_prepare(ipu, ic_task, &in, &out,
+					     ctx->rot_mode,
+					     ipu_ic_pp_complete, ctx);
+	if (IS_ERR(ctx->icc)) {
+		struct vb2_v4l2_buffer *buf;
+		int ret = PTR_ERR(ctx->icc);
+
+		ctx->icc = NULL;
+		v4l2_err(ctx->priv->vdev.vfd->v4l2_dev, "%s: error %d\n",
+			 __func__, ret);
+		while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
+			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
+		while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
+			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void ipu_csc_scaler_stop_streaming(struct vb2_queue *q)
+{
+	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(q);
+	struct vb2_v4l2_buffer *buf;
+
+	if (ctx->icc) {
+		ipu_image_convert_unprepare(ctx->icc);
+		ctx->icc = NULL;
+	}
+
+	ctx->sequence = 0;
+
+	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+		while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
+			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
+	} else {
+		while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
+			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
+	}
+}
+
+static const struct vb2_ops ipu_csc_scaler_qops = {
+	.queue_setup		= ipu_csc_scaler_queue_setup,
+	.buf_prepare		= ipu_csc_scaler_buf_prepare,
+	.buf_queue		= ipu_csc_scaler_buf_queue,
+	.wait_prepare		= vb2_ops_wait_prepare,
+	.wait_finish		= vb2_ops_wait_finish,
+	.start_streaming	= ipu_csc_scaler_start_streaming,
+	.stop_streaming		= ipu_csc_scaler_stop_streaming,
+};
+
+static int ipu_csc_scaler_queue_init(void *priv, struct vb2_queue *src_vq,
+				     struct vb2_queue *dst_vq)
+{
+	struct ipu_csc_scaler_ctx *ctx = priv;
+	int ret;
+
+	memset(src_vq, 0, sizeof(*src_vq));
+	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+	src_vq->drv_priv = ctx;
+	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+	src_vq->ops = &ipu_csc_scaler_qops;
+	src_vq->mem_ops = &vb2_dma_contig_memops;
+	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	src_vq->lock = &ctx->priv->mutex;
+	src_vq->dev = ctx->priv->dev;
+
+	ret = vb2_queue_init(src_vq);
+	if (ret)
+		return ret;
+
+	memset(dst_vq, 0, sizeof(*dst_vq));
+	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
+	dst_vq->drv_priv = ctx;
+	dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+	dst_vq->ops = &ipu_csc_scaler_qops;
+	dst_vq->mem_ops = &vb2_dma_contig_memops;
+	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+	dst_vq->lock = &ctx->priv->mutex;
+	dst_vq->dev = ctx->priv->dev;
+
+	return vb2_queue_init(dst_vq);
+}
+
+static int ipu_csc_scaler_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct ipu_csc_scaler_ctx *ctx = container_of(ctrl->handler,
+						      struct ipu_csc_scaler_ctx,
+						      ctrl_hdlr);
+	enum ipu_rotate_mode rot_mode;
+	int rotate;
+	bool hflip, vflip;
+	int ret = 0;
+
+	rotate = ctx->rotate;
+	hflip = ctx->hflip;
+	vflip = ctx->vflip;
+
+	switch (ctrl->id) {
+	case V4L2_CID_HFLIP:
+		hflip = ctrl->val;
+		break;
+	case V4L2_CID_VFLIP:
+		vflip = ctrl->val;
+		break;
+	case V4L2_CID_ROTATE:
+		rotate = ctrl->val;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = ipu_degrees_to_rot_mode(&rot_mode, rotate, hflip, vflip);
+	if (ret)
+		return ret;
+
+	if (rot_mode != ctx->rot_mode) {
+		struct v4l2_pix_format *in_fmt, *out_fmt;
+		struct ipu_image test_in, test_out;
+
+		in_fmt = &ctx->q_data[V4L2_M2M_SRC].cur_fmt;
+		out_fmt = &ctx->q_data[V4L2_M2M_DST].cur_fmt;
+
+		test_in.pix = *in_fmt;
+		test_out.pix = *out_fmt;
+
+		if (ipu_rot_mode_is_irt(rot_mode) !=
+		    ipu_rot_mode_is_irt(ctx->rot_mode)) {
+			/* Switch width and height to keep aspect ratio intact */
+			test_out.pix.width = out_fmt->height;
+			test_out.pix.height = out_fmt->width;
+		}
+
+		ipu_image_convert_adjust(&test_in, &test_out, ctx->rot_mode);
+
+		/* Check if output format needs to be changed */
+		if (test_in.pix.width != in_fmt->width ||
+		    test_in.pix.height != in_fmt->height ||
+		    test_in.pix.bytesperline != in_fmt->bytesperline ||
+		    test_in.pix.sizeimage != in_fmt->sizeimage) {
+			struct vb2_queue *out_q;
+
+			out_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+						V4L2_BUF_TYPE_VIDEO_OUTPUT);
+			if (vb2_is_busy(out_q))
+				return -EBUSY;
+		}
+
+		/* Check if capture format needs to be changed */
+		if (test_out.pix.width != out_fmt->width ||
+		    test_out.pix.height != out_fmt->height ||
+		    test_out.pix.bytesperline != out_fmt->bytesperline ||
+		    test_out.pix.sizeimage != out_fmt->sizeimage) {
+			struct vb2_queue *cap_q;
+
+			cap_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+						V4L2_BUF_TYPE_VIDEO_CAPTURE);
+			if (vb2_is_busy(cap_q))
+				return -EBUSY;
+		}
+
+		*in_fmt = test_in.pix;
+		*out_fmt = test_out.pix;
+
+		ctx->rot_mode = rot_mode;
+		ctx->rotate = rotate;
+		ctx->hflip = hflip;
+		ctx->vflip = vflip;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_ctrl_ops ipu_csc_scaler_ctrl_ops = {
+	.s_ctrl = ipu_csc_scaler_s_ctrl,
+};
+
+static int ipu_csc_scaler_init_controls(struct ipu_csc_scaler_ctx *ctx)
+{
+	struct v4l2_ctrl_handler *hdlr = &ctx->ctrl_hdlr;
+
+	v4l2_ctrl_handler_init(hdlr, 3);
+
+	v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_HFLIP,
+			  0, 1, 1, 0);
+	v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_VFLIP,
+			  0, 1, 1, 0);
+	v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_ROTATE,
+			  0, 270, 90, 0);
+
+	if (hdlr->error) {
+		v4l2_ctrl_handler_free(hdlr);
+		return hdlr->error;
+	}
+
+	v4l2_ctrl_handler_setup(hdlr);
+	return 0;
+}
+
+#define DEFAULT_WIDTH	720
+#define DEFAULT_HEIGHT	576
+static const struct ipu_csc_scaler_q_data ipu_csc_scaler_q_data_default = {
+	.cur_fmt = {
+		.width = DEFAULT_WIDTH,
+		.height = DEFAULT_HEIGHT,
+		.pixelformat = V4L2_PIX_FMT_YUV420,
+		.field = V4L2_FIELD_NONE,
+		.bytesperline = DEFAULT_WIDTH,
+		.sizeimage = DEFAULT_WIDTH * DEFAULT_HEIGHT * 3 / 2,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+	},
+	.rect = {
+		.width = DEFAULT_WIDTH,
+		.height = DEFAULT_HEIGHT,
+	},
+};
+
+/*
+ * File operations
+ */
+static int ipu_csc_scaler_open(struct file *file)
+{
+	struct ipu_csc_scaler_priv *priv = video_drvdata(file);
+	struct ipu_csc_scaler_ctx *ctx = NULL;
+	int ret;
+
+	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	ctx->rot_mode = IPU_ROTATE_NONE;
+
+	v4l2_fh_init(&ctx->fh, video_devdata(file));
+	file->private_data = &ctx->fh;
+	v4l2_fh_add(&ctx->fh);
+	ctx->priv = priv;
+
+	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(priv->m2m_dev, ctx,
+					    &ipu_csc_scaler_queue_init);
+	if (IS_ERR(ctx->fh.m2m_ctx)) {
+		ret = PTR_ERR(ctx->fh.m2m_ctx);
+		goto err_ctx;
+	}
+
+	ret = ipu_csc_scaler_init_controls(ctx);
+	if (ret)
+		goto err_ctrls;
+
+	ctx->fh.ctrl_handler = &ctx->ctrl_hdlr;
+
+	ctx->q_data[V4L2_M2M_SRC] = ipu_csc_scaler_q_data_default;
+	ctx->q_data[V4L2_M2M_DST] = ipu_csc_scaler_q_data_default;
+
+	dev_dbg(priv->dev, "Created instance %p, m2m_ctx: %p\n", ctx,
+		ctx->fh.m2m_ctx);
+
+	return 0;
+
+err_ctrls:
+	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+err_ctx:
+	v4l2_fh_del(&ctx->fh);
+	v4l2_fh_exit(&ctx->fh);
+	kfree(ctx);
+	return ret;
+}
+
+static int ipu_csc_scaler_release(struct file *file)
+{
+	struct ipu_csc_scaler_priv *priv = video_drvdata(file);
+	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(file->private_data);
+
+	dev_dbg(priv->dev, "Releasing instance %p\n", ctx);
+
+	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+	v4l2_fh_del(&ctx->fh);
+	v4l2_fh_exit(&ctx->fh);
+	kfree(ctx);
+
+	return 0;
+}
+
+static const struct v4l2_file_operations ipu_csc_scaler_fops = {
+	.owner		= THIS_MODULE,
+	.open		= ipu_csc_scaler_open,
+	.release	= ipu_csc_scaler_release,
+	.poll		= v4l2_m2m_fop_poll,
+	.unlocked_ioctl	= video_ioctl2,
+	.mmap		= v4l2_m2m_fop_mmap,
+};
+
+static struct v4l2_m2m_ops m2m_ops = {
+	.device_run	= device_run,
+	.job_abort	= job_abort,
+};
+
+static void ipu_csc_scaler_video_device_release(struct video_device *vdev)
+{
+	struct ipu_csc_scaler_priv *priv = video_get_drvdata(vdev);
+
+	v4l2_m2m_release(priv->m2m_dev);
+	video_device_release(vdev);
+	kfree(priv);
+}
+
+static const struct video_device ipu_csc_scaler_videodev_template = {
+	.name		= "ipu_ic_pp csc/scaler",
+	.fops		= &ipu_csc_scaler_fops,
+	.ioctl_ops	= &ipu_csc_scaler_ioctl_ops,
+	.minor		= -1,
+	.release	= ipu_csc_scaler_video_device_release,
+	.vfl_dir	= VFL_DIR_M2M,
+	.device_caps	= V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
+};
+
+int imx_media_csc_scaler_device_register(struct imx_media_video_dev *vdev)
+{
+	struct ipu_csc_scaler_priv *priv = vdev_to_priv(vdev);
+	struct video_device *vfd = vdev->vfd;
+	int ret;
+
+	vfd->v4l2_dev = &priv->md->v4l2_dev;
+
+	ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
+	if (ret) {
+		v4l2_err(vfd->v4l2_dev, "Failed to register video device\n");
+		return ret;
+	}
+
+	v4l2_info(vfd->v4l2_dev, "Registered %s as /dev/%s\n", vfd->name,
+		  video_device_node_name(vfd));
+
+	return 0;
+}
+
+void imx_media_csc_scaler_device_unregister(struct imx_media_video_dev *vdev)
+{
+	struct ipu_csc_scaler_priv *priv = vdev_to_priv(vdev);
+	struct video_device *vfd = priv->vdev.vfd;
+
+	mutex_lock(&priv->mutex);
+
+	video_unregister_device(vfd);
+
+	mutex_unlock(&priv->mutex);
+}
+
+struct imx_media_video_dev *
+imx_media_csc_scaler_device_init(struct imx_media_dev *md)
+{
+	struct ipu_csc_scaler_priv *priv;
+	struct video_device *vfd;
+	int ret;
+
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return ERR_PTR(-ENOMEM);
+
+	priv->md = md;
+	priv->dev = md->md.dev;
+
+	mutex_init(&priv->mutex);
+
+	vfd = video_device_alloc();
+	if (!vfd) {
+		ret = -ENOMEM;
+		goto err_vfd;
+	}
+
+	*vfd = ipu_csc_scaler_videodev_template;
+	vfd->lock = &priv->mutex;
+	priv->vdev.vfd = vfd;
+
+	INIT_LIST_HEAD(&priv->vdev.list);
+
+	video_set_drvdata(vfd, priv);
+
+	priv->m2m_dev = v4l2_m2m_init(&m2m_ops);
+	if (IS_ERR(priv->m2m_dev)) {
+		ret = PTR_ERR(priv->m2m_dev);
+		v4l2_err(&md->v4l2_dev, "Failed to init mem2mem device: %d\n",
+			 ret);
+		goto err_m2m;
+	}
+
+	return &priv->vdev;
+
+err_m2m:
+	video_set_drvdata(vfd, NULL);
+err_vfd:
+	kfree(priv);
+	return ERR_PTR(ret);
+}
+
+MODULE_DESCRIPTION("i.MX IPUv3 mem2mem scaler/CSC driver");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c
index 6ac371f6e971..1c179c4b9aab 100644
--- a/drivers/staging/media/imx/imx-media-dev.c
+++ b/drivers/staging/media/imx/imx-media-dev.c
@@ -37,10 +37,35 @@ static int imx_media_subdev_bound(struct v4l2_async_notifier *notifier,
 	return 0;
 }
 
+/* async subdev complete notifier */
+int imx6_media_probe_complete(struct v4l2_async_notifier *notifier)
+{
+	struct imx_media_dev *imxmd = notifier2dev(notifier);
+	int ret;
+
+	/* call the imx5/6/7 common probe completion handler */
+	ret = imx_media_probe_complete(notifier);
+	if (ret)
+		return ret;
+
+	mutex_lock(&imxmd->mutex);
+
+	imxmd->m2m_vdev = imx_media_csc_scaler_device_init(imxmd);
+	if (IS_ERR(imxmd->m2m_vdev)) {
+		ret = PTR_ERR(imxmd->m2m_vdev);
+		goto unlock;
+	}
+
+	ret = imx_media_csc_scaler_device_register(imxmd->m2m_vdev);
+unlock:
+	mutex_unlock(&imxmd->mutex);
+	return ret;
+}
+
 /* async subdev complete notifier */
 static const struct v4l2_async_notifier_operations imx_media_notifier_ops = {
 	.bound = imx_media_subdev_bound,
-	.complete = imx_media_probe_complete,
+	.complete = imx6_media_probe_complete,
 };
 
 static int imx_media_probe(struct platform_device *pdev)
@@ -85,6 +110,7 @@ static int imx_media_remove(struct platform_device *pdev)
 	v4l2_async_notifier_unregister(&imxmd->notifier);
 	imx_media_unregister_ipu_internal_subdevs(imxmd);
 	v4l2_async_notifier_cleanup(&imxmd->notifier);
+	imx_media_csc_scaler_device_unregister(imxmd->m2m_vdev);
 	media_device_unregister(&imxmd->md);
 	v4l2_device_unregister(&imxmd->v4l2_dev);
 	media_device_cleanup(&imxmd->md);
diff --git a/drivers/staging/media/imx/imx-media-internal-sd.c b/drivers/staging/media/imx/imx-media-internal-sd.c
index cb1e4cdd5079..d4237e1a4241 100644
--- a/drivers/staging/media/imx/imx-media-internal-sd.c
+++ b/drivers/staging/media/imx/imx-media-internal-sd.c
@@ -210,6 +210,10 @@ int imx_media_register_ipu_internal_subdevs(struct imx_media_dev *imxmd,
 
 	mutex_lock(&imxmd->mutex);
 
+	/* record this IPU */
+	if (!imxmd->ipu[ipu_id])
+		imxmd->ipu[ipu_id] = ipu;
+
 	/* register the synchronous subdevs */
 	for (i = 0; i < NUM_IPU_SUBDEVS; i++) {
 		intsd = &int_subdev[i];
diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h
index 4d124a86b358..11861191324a 100644
--- a/drivers/staging/media/imx/imx-media.h
+++ b/drivers/staging/media/imx/imx-media.h
@@ -136,9 +136,15 @@ struct imx_media_dev {
 	/* master video device list */
 	struct list_head vdev_list;
 
+	/* IPUs this media driver control, valid after subdevs bound */
+	struct ipu_soc *ipu[2];
+
 	/* for async subdev registration */
 	struct v4l2_async_notifier notifier;
 
+	/* IC scaler/CSC mem2mem video device */
+	struct imx_media_video_dev *m2m_vdev;
+
 	/* the IPU internal subdev's registered synchronously */
 	struct v4l2_subdev *sync_sd[2][NUM_IPU_SUBDEVS];
 };
@@ -269,6 +275,12 @@ struct imx_media_buffer *
 imx_media_capture_device_next_buf(struct imx_media_video_dev *vdev);
 void imx_media_capture_device_error(struct imx_media_video_dev *vdev);
 
+/* imx-media-csc-scaler.c */
+struct imx_media_video_dev *
+imx_media_csc_scaler_device_init(struct imx_media_dev *dev);
+int imx_media_csc_scaler_device_register(struct imx_media_video_dev *vdev);
+void imx_media_csc_scaler_device_unregister(struct imx_media_video_dev *vdev);
+
 /* subdev group ids */
 #define IMX_MEDIA_GRP_ID_CSI2          BIT(8)
 #define IMX_MEDIA_GRP_ID_CSI           BIT(9)
-- 
2.20.1


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

* Re: [PATCH v9] media: imx: add csc/scaler mem2mem device
  2019-08-14 12:24 [PATCH v9] media: imx: add csc/scaler mem2mem device Philipp Zabel
@ 2019-08-14 12:35 ` Philipp Zabel
  2019-08-16 23:17 ` Steve Longerbeam
  1 sibling, 0 replies; 4+ messages in thread
From: Philipp Zabel @ 2019-08-14 12:35 UTC (permalink / raw)
  To: linux-media; +Cc: Steve Longerbeam, kernel

On Wed, 2019-08-14 at 14:24 +0200, Philipp Zabel wrote:
> Add a single imx-media mem2mem video device that uses the IPU IC PP
> (image converter post processing) task for scaling and colorspace
> conversion.
> On i.MX6Q/DL SoCs with two IPUs currently only the first IPU is used.
[...]

Output of 'v4l2-compliance -d 10 -e 10 -s -P', with the ipu-v3 fixes at
[1] applied. 'v4l2-compliance -f' works for most format combinations,
but fails with CMA trying to allocate physically contiguous 4096x4096
32-bit RGB buffers on both queues, on my test system:

[1] https://patchwork.kernel.org/series/159687/mbox

----------8<----------
v4l2-compliance SHA: 8d411705aa29f3ad77a4d48797b7ad07bfcce471, 32 bits

Compliance test for imx-media-csc-s device /dev/video10:

Driver Info:
	Driver name      : imx-media-csc-s
	Card type        : imx-media-csc-scaler
	Bus info         : platform:imx-media-csc-scaler
	Driver version   : 5.3.0
	Capabilities     : 0x84208000
		Video Memory-to-Memory
		Streaming
		Extended Pix Format
		Device Capabilities
	Device Caps      : 0x04208000
		Video Memory-to-Memory
		Streaming
		Extended Pix Format
Media Driver Info:
	Driver name      : imx-media
	Model            : imx-media
	Serial           : 
	Bus info         : 
	Media version    : 5.3.0
	Hardware revision: 0x00000000 (0)
	Driver version   : 5.3.0

Required ioctls:
	test VIDIOC_QUERYCAP: OK

Allow for multiple opens:
	test second /dev/video10 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: 4 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
	test Composing: OK
	test Scaling: OK

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

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: Captured 58 buffers
	test MMAP (no poll): OK
	Video Capture: Captured 58 buffers
	test MMAP (select): OK
	Video Capture: Captured 58 buffers
	test MMAP (epoll): OK
	test USERPTR (no poll): OK (Not Supported)
	test USERPTR (select): OK (Not Supported)
	Video Capture: Captured 58 buffers
	test DMABUF (no poll): OK
	Video Capture: Captured 58 buffers
	test DMABUF (select): OK

Total for imx-media-csc-s device /dev/video10: 53, Succeeded: 53, Failed: 0, Warnings: 0
---------->8----------

regards
Philipp

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

* Re: [PATCH v9] media: imx: add csc/scaler mem2mem device
  2019-08-14 12:24 [PATCH v9] media: imx: add csc/scaler mem2mem device Philipp Zabel
  2019-08-14 12:35 ` Philipp Zabel
@ 2019-08-16 23:17 ` Steve Longerbeam
  2019-08-19 10:50   ` Philipp Zabel
  1 sibling, 1 reply; 4+ messages in thread
From: Steve Longerbeam @ 2019-08-16 23:17 UTC (permalink / raw)
  To: Philipp Zabel, linux-media; +Cc: kernel

Hi Philipp,

If you haven't already, can you please test rotation with this version, 
with both non-tiled and tiled scaling conversions. I found rotation was 
broken in v8.

Steve


On 8/14/19 5:24 AM, Philipp Zabel wrote:
> Add a single imx-media mem2mem video device that uses the IPU IC PP
> (image converter post processing) task for scaling and colorspace
> conversion.
> On i.MX6Q/DL SoCs with two IPUs currently only the first IPU is used.
>
> The hardware only supports writing to destination buffers up to
> 1024x1024 pixels in a single pass, arbitrary sizes can be achieved
> by rendering multiple tiles per frame.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> [slongerbeam@gmail.com: use ipu_image_convert_adjust(), fix
>   device_run() error handling, add missing media-device header,
>   unregister and remove the mem2mem device in error paths in
>   imx_media_probe_complete() and in imx_media_remove(), updated
>   for sync subdev registration]
> Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
> ---
> Changes since v8 [1]:
>   - Change subject to be more descriptive.
>   - Call video_unregister_device unconditionally, it handles gracefully
>     handles unregistered video devices.
>   - Rebased onto commit 6d01b7ff5233 ("media: staging/imx: Switch to sync
>     registration for IPU subdevs")
>   - propagate colorimetry info from queue format to image converter
>   - replace devm_kzalloc by kzalloc and release on video_device.release
>     to avoid priv being freed immediately when the driver is unbound
>     while a video device is still opened. This allows to get rid of
>     imx_media_csc_scaler_device_remove() altogether.
>   - update SPDX license identifier
>
> [1] https://patchwork.linuxtv.org/patch/55776/
> ---
>   drivers/staging/media/imx/Kconfig             |   1 +
>   drivers/staging/media/imx/Makefile            |   3 +-
>   .../staging/media/imx/imx-media-csc-scaler.c  | 925 ++++++++++++++++++
>   drivers/staging/media/imx/imx-media-dev.c     |  28 +-
>   .../staging/media/imx/imx-media-internal-sd.c |   4 +
>   drivers/staging/media/imx/imx-media.h         |  12 +
>   6 files changed, 971 insertions(+), 2 deletions(-)
>   create mode 100644 drivers/staging/media/imx/imx-media-csc-scaler.c
>
> diff --git a/drivers/staging/media/imx/Kconfig b/drivers/staging/media/imx/Kconfig
> index 4c726345dc25..56b4d7ea3022 100644
> --- a/drivers/staging/media/imx/Kconfig
> +++ b/drivers/staging/media/imx/Kconfig
> @@ -7,6 +7,7 @@ config VIDEO_IMX_MEDIA
>   	depends on HAS_DMA
>   	select VIDEOBUF2_DMA_CONTIG
>   	select V4L2_FWNODE
> +	select V4L2_MEM2MEM_DEV
>   	help
>   	  Say yes here to enable support for video4linux media controller
>   	  driver for the i.MX5/6 SOC.
> diff --git a/drivers/staging/media/imx/Makefile b/drivers/staging/media/imx/Makefile
> index aa6c4b4ad37e..9bd9e873ba7c 100644
> --- a/drivers/staging/media/imx/Makefile
> +++ b/drivers/staging/media/imx/Makefile
> @@ -1,6 +1,7 @@
>   # SPDX-License-Identifier: GPL-2.0
>   imx6-media-objs := imx-media-dev.o imx-media-internal-sd.o \
> -	imx-ic-common.o imx-ic-prp.o imx-ic-prpencvf.o imx-media-vdic.o
> +	imx-ic-common.o imx-ic-prp.o imx-ic-prpencvf.o imx-media-vdic.o \
> +	imx-media-csc-scaler.o
>   
>   imx-media-common-objs := imx-media-capture.o imx-media-dev-common.o \
>   	imx-media-of.o imx-media-utils.o
> diff --git a/drivers/staging/media/imx/imx-media-csc-scaler.c b/drivers/staging/media/imx/imx-media-csc-scaler.c
> new file mode 100644
> index 000000000000..0cebb013831d
> --- /dev/null
> +++ b/drivers/staging/media/imx/imx-media-csc-scaler.c
> @@ -0,0 +1,925 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * i.MX IPUv3 IC PP mem2mem CSC/Scaler driver
> + *
> + * Copyright (C) 2011 Pengutronix, Sascha Hauer
> + * Copyright (C) 2018 Pengutronix, Philipp Zabel
> + */
> +#include <linux/module.h>
> +#include <linux/delay.h>
> +#include <linux/fs.h>
> +#include <linux/version.h>
> +#include <linux/sched.h>
> +#include <linux/slab.h>
> +#include <video/imx-ipu-v3.h>
> +#include <video/imx-ipu-image-convert.h>
> +
> +#include <media/media-device.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-event.h>
> +#include <media/v4l2-mem2mem.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-ioctl.h>
> +#include <media/videobuf2-dma-contig.h>
> +
> +#include "imx-media.h"
> +
> +#define fh_to_ctx(__fh)	container_of(__fh, struct ipu_csc_scaler_ctx, fh)
> +
> +enum {
> +	V4L2_M2M_SRC = 0,
> +	V4L2_M2M_DST = 1,
> +};
> +
> +struct ipu_csc_scaler_priv {
> +	struct imx_media_video_dev	vdev;
> +
> +	struct v4l2_m2m_dev		*m2m_dev;
> +	struct device			*dev;
> +
> +	struct imx_media_dev		*md;
> +
> +	struct mutex			mutex;	/* mem2mem device mutex */
> +};
> +
> +#define vdev_to_priv(v) container_of(v, struct ipu_csc_scaler_priv, vdev)
> +
> +/* Per-queue, driver-specific private data */
> +struct ipu_csc_scaler_q_data {
> +	struct v4l2_pix_format		cur_fmt;
> +	struct v4l2_rect		rect;
> +};
> +
> +struct ipu_csc_scaler_ctx {
> +	struct ipu_csc_scaler_priv	*priv;
> +
> +	struct v4l2_fh			fh;
> +	struct ipu_csc_scaler_q_data	q_data[2];
> +	struct ipu_image_convert_ctx	*icc;
> +
> +	struct v4l2_ctrl_handler	ctrl_hdlr;
> +	int				rotate;
> +	bool				hflip;
> +	bool				vflip;
> +	enum ipu_rotate_mode		rot_mode;
> +	unsigned int			sequence;
> +};
> +
> +static struct ipu_csc_scaler_q_data *get_q_data(struct ipu_csc_scaler_ctx *ctx,
> +						enum v4l2_buf_type type)
> +{
> +	if (V4L2_TYPE_IS_OUTPUT(type))
> +		return &ctx->q_data[V4L2_M2M_SRC];
> +	else
> +		return &ctx->q_data[V4L2_M2M_DST];
> +}
> +
> +/*
> + * mem2mem callbacks
> + */
> +
> +static void job_abort(void *_ctx)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = _ctx;
> +
> +	if (ctx->icc)
> +		ipu_image_convert_abort(ctx->icc);
> +}
> +
> +static void ipu_ic_pp_complete(struct ipu_image_convert_run *run, void *_ctx)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = _ctx;
> +	struct ipu_csc_scaler_priv *priv = ctx->priv;
> +	struct vb2_v4l2_buffer *src_buf, *dst_buf;
> +
> +	src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> +	dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> +
> +	v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
> +
> +	src_buf->sequence = dst_buf->sequence = ctx->sequence++;
> +
> +	v4l2_m2m_buf_done(src_buf, run->status ? VB2_BUF_STATE_ERROR :
> +						 VB2_BUF_STATE_DONE);
> +	v4l2_m2m_buf_done(dst_buf, run->status ? VB2_BUF_STATE_ERROR :
> +						 VB2_BUF_STATE_DONE);
> +
> +	v4l2_m2m_job_finish(priv->m2m_dev, ctx->fh.m2m_ctx);
> +	kfree(run);
> +}
> +
> +static void device_run(void *_ctx)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = _ctx;
> +	struct ipu_csc_scaler_priv *priv = ctx->priv;
> +	struct vb2_v4l2_buffer *src_buf, *dst_buf;
> +	struct ipu_image_convert_run *run;
> +	int ret;
> +
> +	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
> +	dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
> +
> +	run = kzalloc(sizeof(*run), GFP_KERNEL);
> +	if (!run)
> +		goto err;
> +
> +	run->ctx = ctx->icc;
> +	run->in_phys = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
> +	run->out_phys = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
> +
> +	ret = ipu_image_convert_queue(run);
> +	if (ret < 0) {
> +		v4l2_err(ctx->priv->vdev.vfd->v4l2_dev,
> +			 "%s: failed to queue: %d\n", __func__, ret);
> +		goto err;
> +	}
> +
> +	return;
> +
> +err:
> +	v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> +	v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> +	v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
> +	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
> +	v4l2_m2m_job_finish(priv->m2m_dev, ctx->fh.m2m_ctx);
> +}
> +
> +/*
> + * Video ioctls
> + */
> +static int ipu_csc_scaler_querycap(struct file *file, void *priv,
> +				   struct v4l2_capability *cap)
> +{
> +	strscpy(cap->driver, "imx-media-csc-scaler", sizeof(cap->driver));
> +	strscpy(cap->card, "imx-media-csc-scaler", sizeof(cap->card));
> +	strscpy(cap->bus_info, "platform:imx-media-csc-scaler",
> +		sizeof(cap->bus_info));
> +
> +	return 0;
> +}
> +
> +static int ipu_csc_scaler_enum_fmt(struct file *file, void *fh,
> +				   struct v4l2_fmtdesc *f)
> +{
> +	u32 fourcc;
> +	int ret;
> +
> +	ret = imx_media_enum_format(&fourcc, f->index, CS_SEL_ANY);
> +	if (ret)
> +		return ret;
> +
> +	f->pixelformat = fourcc;
> +
> +	return 0;
> +}
> +
> +static int ipu_csc_scaler_g_fmt(struct file *file, void *priv,
> +				struct v4l2_format *f)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
> +	struct ipu_csc_scaler_q_data *q_data;
> +
> +	q_data = get_q_data(ctx, f->type);
> +
> +	f->fmt.pix = q_data->cur_fmt;
> +
> +	return 0;
> +}
> +
> +static int ipu_csc_scaler_try_fmt(struct file *file, void *priv,
> +				  struct v4l2_format *f)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
> +	struct ipu_csc_scaler_q_data *q_data = get_q_data(ctx, f->type);
> +	struct ipu_image test_in, test_out;
> +	enum v4l2_field field;
> +
> +	field = f->fmt.pix.field;
> +	if (field == V4L2_FIELD_ANY)
> +		field = V4L2_FIELD_NONE;
> +	else if (field != V4L2_FIELD_NONE)
> +		return -EINVAL;
> +
> +	if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
> +		struct ipu_csc_scaler_q_data *q_data_in =
> +			get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
> +
> +		test_out.pix = f->fmt.pix;
> +		test_in.pix = q_data_in->cur_fmt;
> +	} else {
> +		struct ipu_csc_scaler_q_data *q_data_out =
> +			get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +
> +		test_in.pix = f->fmt.pix;
> +		test_out.pix = q_data_out->cur_fmt;
> +	}
> +
> +	ipu_image_convert_adjust(&test_in, &test_out, ctx->rot_mode);
> +
> +	f->fmt.pix = (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
> +		test_out.pix : test_in.pix;
> +
> +	if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
> +		f->fmt.pix.colorspace = q_data->cur_fmt.colorspace;
> +		f->fmt.pix.ycbcr_enc = q_data->cur_fmt.ycbcr_enc;
> +		f->fmt.pix.xfer_func = q_data->cur_fmt.xfer_func;
> +		f->fmt.pix.quantization = q_data->cur_fmt.quantization;
> +	} else if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT) {
> +		f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
> +		f->fmt.pix.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
> +		f->fmt.pix.xfer_func = V4L2_XFER_FUNC_DEFAULT;
> +		f->fmt.pix.quantization = V4L2_QUANTIZATION_DEFAULT;
> +	}
> +
> +	return 0;
> +}
> +
> +static int ipu_csc_scaler_s_fmt(struct file *file, void *priv,
> +				struct v4l2_format *f)
> +{
> +	struct ipu_csc_scaler_q_data *q_data;
> +	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
> +	struct vb2_queue *vq;
> +	int ret;
> +
> +	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
> +	if (vb2_is_busy(vq)) {
> +		v4l2_err(ctx->priv->vdev.vfd->v4l2_dev, "%s: queue busy\n",
> +			 __func__);
> +		return -EBUSY;
> +	}
> +
> +	q_data = get_q_data(ctx, f->type);
> +
> +	ret = ipu_csc_scaler_try_fmt(file, priv, f);
> +	if (ret < 0)
> +		return ret;
> +
> +	q_data->cur_fmt.width = f->fmt.pix.width;
> +	q_data->cur_fmt.height = f->fmt.pix.height;
> +	q_data->cur_fmt.pixelformat = f->fmt.pix.pixelformat;
> +	q_data->cur_fmt.field = f->fmt.pix.field;
> +	q_data->cur_fmt.bytesperline = f->fmt.pix.bytesperline;
> +	q_data->cur_fmt.sizeimage = f->fmt.pix.sizeimage;
> +
> +	/* Reset cropping/composing rectangle */
> +	q_data->rect.left = 0;
> +	q_data->rect.top = 0;
> +	q_data->rect.width = q_data->cur_fmt.width;
> +	q_data->rect.height = q_data->cur_fmt.height;
> +
> +	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
> +		/* Set colorimetry on the output queue */
> +		q_data->cur_fmt.colorspace = f->fmt.pix.colorspace;
> +		q_data->cur_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
> +		q_data->cur_fmt.xfer_func = f->fmt.pix.xfer_func;
> +		q_data->cur_fmt.quantization = f->fmt.pix.quantization;
> +		/* Propagate colorimetry to the capture queue */
> +		q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +		q_data->cur_fmt.colorspace = f->fmt.pix.colorspace;
> +		q_data->cur_fmt.ycbcr_enc = f->fmt.pix.ycbcr_enc;
> +		q_data->cur_fmt.xfer_func = f->fmt.pix.xfer_func;
> +		q_data->cur_fmt.quantization = f->fmt.pix.quantization;
> +	}
> +
> +	/*
> +	 * TODO: Setting colorimetry on the capture queue is currently not
> +	 * supported by the V4L2 API
> +	 */
> +
> +	return 0;
> +}
> +
> +static int ipu_csc_scaler_g_selection(struct file *file, void *priv,
> +				      struct v4l2_selection *s)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
> +	struct ipu_csc_scaler_q_data *q_data;
> +
> +	switch (s->target) {
> +	case V4L2_SEL_TGT_CROP:
> +	case V4L2_SEL_TGT_CROP_DEFAULT:
> +	case V4L2_SEL_TGT_CROP_BOUNDS:
> +		if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
> +			return -EINVAL;
> +		q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
> +		break;
> +	case V4L2_SEL_TGT_COMPOSE:
> +	case V4L2_SEL_TGT_COMPOSE_DEFAULT:
> +	case V4L2_SEL_TGT_COMPOSE_BOUNDS:
> +		if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> +			return -EINVAL;
> +		q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	if (s->target == V4L2_SEL_TGT_CROP ||
> +	    s->target == V4L2_SEL_TGT_COMPOSE) {
> +		s->r = q_data->rect;
> +	} else {
> +		s->r.left = 0;
> +		s->r.top = 0;
> +		s->r.width = q_data->cur_fmt.width;
> +		s->r.height = q_data->cur_fmt.height;
> +	}
> +
> +	return 0;
> +}
> +
> +static int ipu_csc_scaler_s_selection(struct file *file, void *priv,
> +				      struct v4l2_selection *s)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(priv);
> +	struct ipu_csc_scaler_q_data *q_data;
> +
> +	switch (s->target) {
> +	case V4L2_SEL_TGT_CROP:
> +		if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
> +			return -EINVAL;
> +		break;
> +	case V4L2_SEL_TGT_COMPOSE:
> +		if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> +			return -EINVAL;
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
> +	    s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
> +		return -EINVAL;
> +
> +	q_data = get_q_data(ctx, s->type);
> +
> +	/* The input's frame width to the IC must be a multiple of 8 pixels
> +	 * When performing resizing the frame width must be multiple of burst
> +	 * size - 8 or 16 pixels as defined by CB#_BURST_16 parameter.
> +	 */
> +	if (s->flags & V4L2_SEL_FLAG_GE)
> +		s->r.width = round_up(s->r.width, 8);
> +	if (s->flags & V4L2_SEL_FLAG_LE)
> +		s->r.width = round_down(s->r.width, 8);
> +	s->r.width = clamp_t(unsigned int, s->r.width, 8,
> +			     round_down(q_data->cur_fmt.width, 8));
> +	s->r.height = clamp_t(unsigned int, s->r.height, 1,
> +			      q_data->cur_fmt.height);
> +	s->r.left = clamp_t(unsigned int, s->r.left, 0,
> +			    q_data->cur_fmt.width - s->r.width);
> +	s->r.top = clamp_t(unsigned int, s->r.top, 0,
> +			   q_data->cur_fmt.height - s->r.height);
> +
> +	/* V4L2_SEL_FLAG_KEEP_CONFIG is only valid for subdevices */
> +	q_data->rect = s->r;
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_ioctl_ops ipu_csc_scaler_ioctl_ops = {
> +	.vidioc_querycap		= ipu_csc_scaler_querycap,
> +
> +	.vidioc_enum_fmt_vid_cap	= ipu_csc_scaler_enum_fmt,
> +	.vidioc_g_fmt_vid_cap		= ipu_csc_scaler_g_fmt,
> +	.vidioc_try_fmt_vid_cap		= ipu_csc_scaler_try_fmt,
> +	.vidioc_s_fmt_vid_cap		= ipu_csc_scaler_s_fmt,
> +
> +	.vidioc_enum_fmt_vid_out	= ipu_csc_scaler_enum_fmt,
> +	.vidioc_g_fmt_vid_out		= ipu_csc_scaler_g_fmt,
> +	.vidioc_try_fmt_vid_out		= ipu_csc_scaler_try_fmt,
> +	.vidioc_s_fmt_vid_out		= ipu_csc_scaler_s_fmt,
> +
> +	.vidioc_g_selection		= ipu_csc_scaler_g_selection,
> +	.vidioc_s_selection		= ipu_csc_scaler_s_selection,
> +
> +	.vidioc_reqbufs			= v4l2_m2m_ioctl_reqbufs,
> +	.vidioc_querybuf		= v4l2_m2m_ioctl_querybuf,
> +
> +	.vidioc_qbuf			= v4l2_m2m_ioctl_qbuf,
> +	.vidioc_expbuf			= v4l2_m2m_ioctl_expbuf,
> +	.vidioc_dqbuf			= v4l2_m2m_ioctl_dqbuf,
> +	.vidioc_create_bufs		= v4l2_m2m_ioctl_create_bufs,
> +	.vidioc_prepare_buf		= v4l2_m2m_ioctl_prepare_buf,
> +
> +	.vidioc_streamon		= v4l2_m2m_ioctl_streamon,
> +	.vidioc_streamoff		= v4l2_m2m_ioctl_streamoff,
> +
> +	.vidioc_subscribe_event		= v4l2_ctrl_subscribe_event,
> +	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
> +};
> +
> +/*
> + * Queue operations
> + */
> +
> +static int ipu_csc_scaler_queue_setup(struct vb2_queue *vq,
> +				      unsigned int *nbuffers,
> +				      unsigned int *nplanes,
> +				      unsigned int sizes[],
> +				      struct device *alloc_devs[])
> +{
> +	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vq);
> +	struct ipu_csc_scaler_q_data *q_data;
> +	unsigned int size, count = *nbuffers;
> +
> +	q_data = get_q_data(ctx, vq->type);
> +
> +	size = q_data->cur_fmt.sizeimage;
> +
> +	*nbuffers = count;
> +
> +	if (*nplanes)
> +		return sizes[0] < size ? -EINVAL : 0;
> +
> +	*nplanes = 1;
> +	sizes[0] = size;
> +
> +	dev_dbg(ctx->priv->dev, "get %d buffer(s) of size %d each.\n",
> +		count, size);
> +
> +	return 0;
> +}
> +
> +static int ipu_csc_scaler_buf_prepare(struct vb2_buffer *vb)
> +{
> +	struct vb2_queue *vq = vb->vb2_queue;
> +	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> +	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vq);
> +	struct ipu_csc_scaler_q_data *q_data;
> +	unsigned long size;
> +
> +	dev_dbg(ctx->priv->dev, "type: %d\n", vq->type);
> +
> +	if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
> +		if (vbuf->field == V4L2_FIELD_ANY)
> +			vbuf->field = V4L2_FIELD_NONE;
> +		if (vbuf->field != V4L2_FIELD_NONE) {
> +			dev_dbg(ctx->priv->dev, "%s: field isn't supported\n",
> +				__func__);
> +			return -EINVAL;
> +		}
> +	}
> +
> +	q_data = get_q_data(ctx, vq->type);
> +	size = q_data->cur_fmt.sizeimage;
> +
> +	if (vb2_plane_size(vb, 0) < size) {
> +		dev_dbg(ctx->priv->dev,
> +			"%s: data will not fit into plane (%lu < %lu)\n",
> +			__func__, vb2_plane_size(vb, 0), size);
> +		return -EINVAL;
> +	}
> +
> +	vb2_set_plane_payload(vb, 0, size);
> +
> +	return 0;
> +}
> +
> +static void ipu_csc_scaler_buf_queue(struct vb2_buffer *vb)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> +
> +	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, to_vb2_v4l2_buffer(vb));
> +}
> +
> +static void ipu_image_from_q_data(struct ipu_image *im,
> +				  struct ipu_csc_scaler_q_data *q_data)
> +{
> +	struct v4l2_pix_format *fmt = &q_data->cur_fmt;
> +
> +	im->pix = *fmt;
> +	if (fmt->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
> +		im->pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
> +	if (fmt->quantization == V4L2_QUANTIZATION_DEFAULT)
> +		im->pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
> +	im->rect = q_data->rect;
> +}
> +
> +static int ipu_csc_scaler_start_streaming(struct vb2_queue *q,
> +					  unsigned int count)
> +{
> +	const enum ipu_ic_task ic_task = IC_TASK_POST_PROCESSOR;
> +	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(q);
> +	struct ipu_csc_scaler_priv *priv = ctx->priv;
> +	struct ipu_soc *ipu = priv->md->ipu[0];
> +	struct ipu_csc_scaler_q_data *q_data;
> +	struct vb2_queue *other_q;
> +	struct ipu_image in, out;
> +
> +	other_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> +				  (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
> +				  V4L2_BUF_TYPE_VIDEO_OUTPUT :
> +				  V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +	if (!vb2_is_streaming(other_q))
> +		return 0;
> +
> +	if (ctx->icc) {
> +		v4l2_warn(ctx->priv->vdev.vfd->v4l2_dev, "removing old ICC\n");
> +		ipu_image_convert_unprepare(ctx->icc);
> +	}
> +
> +	q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
> +	ipu_image_from_q_data(&in, q_data);
> +
> +	q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +	ipu_image_from_q_data(&out, q_data);
> +
> +	ctx->icc = ipu_image_convert_prepare(ipu, ic_task, &in, &out,
> +					     ctx->rot_mode,
> +					     ipu_ic_pp_complete, ctx);
> +	if (IS_ERR(ctx->icc)) {
> +		struct vb2_v4l2_buffer *buf;
> +		int ret = PTR_ERR(ctx->icc);
> +
> +		ctx->icc = NULL;
> +		v4l2_err(ctx->priv->vdev.vfd->v4l2_dev, "%s: error %d\n",
> +			 __func__, ret);
> +		while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
> +		while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static void ipu_csc_scaler_stop_streaming(struct vb2_queue *q)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = vb2_get_drv_priv(q);
> +	struct vb2_v4l2_buffer *buf;
> +
> +	if (ctx->icc) {
> +		ipu_image_convert_unprepare(ctx->icc);
> +		ctx->icc = NULL;
> +	}
> +
> +	ctx->sequence = 0;
> +
> +	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
> +		while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
> +	} else {
> +		while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
> +			v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
> +	}
> +}
> +
> +static const struct vb2_ops ipu_csc_scaler_qops = {
> +	.queue_setup		= ipu_csc_scaler_queue_setup,
> +	.buf_prepare		= ipu_csc_scaler_buf_prepare,
> +	.buf_queue		= ipu_csc_scaler_buf_queue,
> +	.wait_prepare		= vb2_ops_wait_prepare,
> +	.wait_finish		= vb2_ops_wait_finish,
> +	.start_streaming	= ipu_csc_scaler_start_streaming,
> +	.stop_streaming		= ipu_csc_scaler_stop_streaming,
> +};
> +
> +static int ipu_csc_scaler_queue_init(void *priv, struct vb2_queue *src_vq,
> +				     struct vb2_queue *dst_vq)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = priv;
> +	int ret;
> +
> +	memset(src_vq, 0, sizeof(*src_vq));
> +	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
> +	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> +	src_vq->drv_priv = ctx;
> +	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> +	src_vq->ops = &ipu_csc_scaler_qops;
> +	src_vq->mem_ops = &vb2_dma_contig_memops;
> +	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> +	src_vq->lock = &ctx->priv->mutex;
> +	src_vq->dev = ctx->priv->dev;
> +
> +	ret = vb2_queue_init(src_vq);
> +	if (ret)
> +		return ret;
> +
> +	memset(dst_vq, 0, sizeof(*dst_vq));
> +	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> +	dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> +	dst_vq->drv_priv = ctx;
> +	dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> +	dst_vq->ops = &ipu_csc_scaler_qops;
> +	dst_vq->mem_ops = &vb2_dma_contig_memops;
> +	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> +	dst_vq->lock = &ctx->priv->mutex;
> +	dst_vq->dev = ctx->priv->dev;
> +
> +	return vb2_queue_init(dst_vq);
> +}
> +
> +static int ipu_csc_scaler_s_ctrl(struct v4l2_ctrl *ctrl)
> +{
> +	struct ipu_csc_scaler_ctx *ctx = container_of(ctrl->handler,
> +						      struct ipu_csc_scaler_ctx,
> +						      ctrl_hdlr);
> +	enum ipu_rotate_mode rot_mode;
> +	int rotate;
> +	bool hflip, vflip;
> +	int ret = 0;
> +
> +	rotate = ctx->rotate;
> +	hflip = ctx->hflip;
> +	vflip = ctx->vflip;
> +
> +	switch (ctrl->id) {
> +	case V4L2_CID_HFLIP:
> +		hflip = ctrl->val;
> +		break;
> +	case V4L2_CID_VFLIP:
> +		vflip = ctrl->val;
> +		break;
> +	case V4L2_CID_ROTATE:
> +		rotate = ctrl->val;
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	ret = ipu_degrees_to_rot_mode(&rot_mode, rotate, hflip, vflip);
> +	if (ret)
> +		return ret;
> +
> +	if (rot_mode != ctx->rot_mode) {
> +		struct v4l2_pix_format *in_fmt, *out_fmt;
> +		struct ipu_image test_in, test_out;
> +
> +		in_fmt = &ctx->q_data[V4L2_M2M_SRC].cur_fmt;
> +		out_fmt = &ctx->q_data[V4L2_M2M_DST].cur_fmt;
> +
> +		test_in.pix = *in_fmt;
> +		test_out.pix = *out_fmt;
> +
> +		if (ipu_rot_mode_is_irt(rot_mode) !=
> +		    ipu_rot_mode_is_irt(ctx->rot_mode)) {
> +			/* Switch width and height to keep aspect ratio intact */
> +			test_out.pix.width = out_fmt->height;
> +			test_out.pix.height = out_fmt->width;
> +		}
> +
> +		ipu_image_convert_adjust(&test_in, &test_out, ctx->rot_mode);
> +
> +		/* Check if output format needs to be changed */
> +		if (test_in.pix.width != in_fmt->width ||
> +		    test_in.pix.height != in_fmt->height ||
> +		    test_in.pix.bytesperline != in_fmt->bytesperline ||
> +		    test_in.pix.sizeimage != in_fmt->sizeimage) {
> +			struct vb2_queue *out_q;
> +
> +			out_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> +						V4L2_BUF_TYPE_VIDEO_OUTPUT);
> +			if (vb2_is_busy(out_q))
> +				return -EBUSY;
> +		}
> +
> +		/* Check if capture format needs to be changed */
> +		if (test_out.pix.width != out_fmt->width ||
> +		    test_out.pix.height != out_fmt->height ||
> +		    test_out.pix.bytesperline != out_fmt->bytesperline ||
> +		    test_out.pix.sizeimage != out_fmt->sizeimage) {
> +			struct vb2_queue *cap_q;
> +
> +			cap_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> +						V4L2_BUF_TYPE_VIDEO_CAPTURE);
> +			if (vb2_is_busy(cap_q))
> +				return -EBUSY;
> +		}
> +
> +		*in_fmt = test_in.pix;
> +		*out_fmt = test_out.pix;
> +
> +		ctx->rot_mode = rot_mode;
> +		ctx->rotate = rotate;
> +		ctx->hflip = hflip;
> +		ctx->vflip = vflip;
> +	}
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_ctrl_ops ipu_csc_scaler_ctrl_ops = {
> +	.s_ctrl = ipu_csc_scaler_s_ctrl,
> +};
> +
> +static int ipu_csc_scaler_init_controls(struct ipu_csc_scaler_ctx *ctx)
> +{
> +	struct v4l2_ctrl_handler *hdlr = &ctx->ctrl_hdlr;
> +
> +	v4l2_ctrl_handler_init(hdlr, 3);
> +
> +	v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_HFLIP,
> +			  0, 1, 1, 0);
> +	v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_VFLIP,
> +			  0, 1, 1, 0);
> +	v4l2_ctrl_new_std(hdlr, &ipu_csc_scaler_ctrl_ops, V4L2_CID_ROTATE,
> +			  0, 270, 90, 0);
> +
> +	if (hdlr->error) {
> +		v4l2_ctrl_handler_free(hdlr);
> +		return hdlr->error;
> +	}
> +
> +	v4l2_ctrl_handler_setup(hdlr);
> +	return 0;
> +}
> +
> +#define DEFAULT_WIDTH	720
> +#define DEFAULT_HEIGHT	576
> +static const struct ipu_csc_scaler_q_data ipu_csc_scaler_q_data_default = {
> +	.cur_fmt = {
> +		.width = DEFAULT_WIDTH,
> +		.height = DEFAULT_HEIGHT,
> +		.pixelformat = V4L2_PIX_FMT_YUV420,
> +		.field = V4L2_FIELD_NONE,
> +		.bytesperline = DEFAULT_WIDTH,
> +		.sizeimage = DEFAULT_WIDTH * DEFAULT_HEIGHT * 3 / 2,
> +		.colorspace = V4L2_COLORSPACE_SRGB,
> +	},
> +	.rect = {
> +		.width = DEFAULT_WIDTH,
> +		.height = DEFAULT_HEIGHT,
> +	},
> +};
> +
> +/*
> + * File operations
> + */
> +static int ipu_csc_scaler_open(struct file *file)
> +{
> +	struct ipu_csc_scaler_priv *priv = video_drvdata(file);
> +	struct ipu_csc_scaler_ctx *ctx = NULL;
> +	int ret;
> +
> +	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
> +	if (!ctx)
> +		return -ENOMEM;
> +
> +	ctx->rot_mode = IPU_ROTATE_NONE;
> +
> +	v4l2_fh_init(&ctx->fh, video_devdata(file));
> +	file->private_data = &ctx->fh;
> +	v4l2_fh_add(&ctx->fh);
> +	ctx->priv = priv;
> +
> +	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(priv->m2m_dev, ctx,
> +					    &ipu_csc_scaler_queue_init);
> +	if (IS_ERR(ctx->fh.m2m_ctx)) {
> +		ret = PTR_ERR(ctx->fh.m2m_ctx);
> +		goto err_ctx;
> +	}
> +
> +	ret = ipu_csc_scaler_init_controls(ctx);
> +	if (ret)
> +		goto err_ctrls;
> +
> +	ctx->fh.ctrl_handler = &ctx->ctrl_hdlr;
> +
> +	ctx->q_data[V4L2_M2M_SRC] = ipu_csc_scaler_q_data_default;
> +	ctx->q_data[V4L2_M2M_DST] = ipu_csc_scaler_q_data_default;
> +
> +	dev_dbg(priv->dev, "Created instance %p, m2m_ctx: %p\n", ctx,
> +		ctx->fh.m2m_ctx);
> +
> +	return 0;
> +
> +err_ctrls:
> +	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> +err_ctx:
> +	v4l2_fh_del(&ctx->fh);
> +	v4l2_fh_exit(&ctx->fh);
> +	kfree(ctx);
> +	return ret;
> +}
> +
> +static int ipu_csc_scaler_release(struct file *file)
> +{
> +	struct ipu_csc_scaler_priv *priv = video_drvdata(file);
> +	struct ipu_csc_scaler_ctx *ctx = fh_to_ctx(file->private_data);
> +
> +	dev_dbg(priv->dev, "Releasing instance %p\n", ctx);
> +
> +	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
> +	v4l2_fh_del(&ctx->fh);
> +	v4l2_fh_exit(&ctx->fh);
> +	kfree(ctx);
> +
> +	return 0;
> +}
> +
> +static const struct v4l2_file_operations ipu_csc_scaler_fops = {
> +	.owner		= THIS_MODULE,
> +	.open		= ipu_csc_scaler_open,
> +	.release	= ipu_csc_scaler_release,
> +	.poll		= v4l2_m2m_fop_poll,
> +	.unlocked_ioctl	= video_ioctl2,
> +	.mmap		= v4l2_m2m_fop_mmap,
> +};
> +
> +static struct v4l2_m2m_ops m2m_ops = {
> +	.device_run	= device_run,
> +	.job_abort	= job_abort,
> +};
> +
> +static void ipu_csc_scaler_video_device_release(struct video_device *vdev)
> +{
> +	struct ipu_csc_scaler_priv *priv = video_get_drvdata(vdev);
> +
> +	v4l2_m2m_release(priv->m2m_dev);
> +	video_device_release(vdev);
> +	kfree(priv);
> +}
> +
> +static const struct video_device ipu_csc_scaler_videodev_template = {
> +	.name		= "ipu_ic_pp csc/scaler",
> +	.fops		= &ipu_csc_scaler_fops,
> +	.ioctl_ops	= &ipu_csc_scaler_ioctl_ops,
> +	.minor		= -1,
> +	.release	= ipu_csc_scaler_video_device_release,
> +	.vfl_dir	= VFL_DIR_M2M,
> +	.device_caps	= V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
> +};
> +
> +int imx_media_csc_scaler_device_register(struct imx_media_video_dev *vdev)
> +{
> +	struct ipu_csc_scaler_priv *priv = vdev_to_priv(vdev);
> +	struct video_device *vfd = vdev->vfd;
> +	int ret;
> +
> +	vfd->v4l2_dev = &priv->md->v4l2_dev;
> +
> +	ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
> +	if (ret) {
> +		v4l2_err(vfd->v4l2_dev, "Failed to register video device\n");
> +		return ret;
> +	}
> +
> +	v4l2_info(vfd->v4l2_dev, "Registered %s as /dev/%s\n", vfd->name,
> +		  video_device_node_name(vfd));
> +
> +	return 0;
> +}
> +
> +void imx_media_csc_scaler_device_unregister(struct imx_media_video_dev *vdev)
> +{
> +	struct ipu_csc_scaler_priv *priv = vdev_to_priv(vdev);
> +	struct video_device *vfd = priv->vdev.vfd;
> +
> +	mutex_lock(&priv->mutex);
> +
> +	video_unregister_device(vfd);
> +
> +	mutex_unlock(&priv->mutex);
> +}
> +
> +struct imx_media_video_dev *
> +imx_media_csc_scaler_device_init(struct imx_media_dev *md)
> +{
> +	struct ipu_csc_scaler_priv *priv;
> +	struct video_device *vfd;
> +	int ret;
> +
> +	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
> +	if (!priv)
> +		return ERR_PTR(-ENOMEM);
> +
> +	priv->md = md;
> +	priv->dev = md->md.dev;
> +
> +	mutex_init(&priv->mutex);
> +
> +	vfd = video_device_alloc();
> +	if (!vfd) {
> +		ret = -ENOMEM;
> +		goto err_vfd;
> +	}
> +
> +	*vfd = ipu_csc_scaler_videodev_template;
> +	vfd->lock = &priv->mutex;
> +	priv->vdev.vfd = vfd;
> +
> +	INIT_LIST_HEAD(&priv->vdev.list);
> +
> +	video_set_drvdata(vfd, priv);
> +
> +	priv->m2m_dev = v4l2_m2m_init(&m2m_ops);
> +	if (IS_ERR(priv->m2m_dev)) {
> +		ret = PTR_ERR(priv->m2m_dev);
> +		v4l2_err(&md->v4l2_dev, "Failed to init mem2mem device: %d\n",
> +			 ret);
> +		goto err_m2m;
> +	}
> +
> +	return &priv->vdev;
> +
> +err_m2m:
> +	video_set_drvdata(vfd, NULL);
> +err_vfd:
> +	kfree(priv);
> +	return ERR_PTR(ret);
> +}
> +
> +MODULE_DESCRIPTION("i.MX IPUv3 mem2mem scaler/CSC driver");
> +MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c
> index 6ac371f6e971..1c179c4b9aab 100644
> --- a/drivers/staging/media/imx/imx-media-dev.c
> +++ b/drivers/staging/media/imx/imx-media-dev.c
> @@ -37,10 +37,35 @@ static int imx_media_subdev_bound(struct v4l2_async_notifier *notifier,
>   	return 0;
>   }
>   
> +/* async subdev complete notifier */
> +int imx6_media_probe_complete(struct v4l2_async_notifier *notifier)
> +{
> +	struct imx_media_dev *imxmd = notifier2dev(notifier);
> +	int ret;
> +
> +	/* call the imx5/6/7 common probe completion handler */
> +	ret = imx_media_probe_complete(notifier);
> +	if (ret)
> +		return ret;
> +
> +	mutex_lock(&imxmd->mutex);
> +
> +	imxmd->m2m_vdev = imx_media_csc_scaler_device_init(imxmd);
> +	if (IS_ERR(imxmd->m2m_vdev)) {
> +		ret = PTR_ERR(imxmd->m2m_vdev);
> +		goto unlock;
> +	}
> +
> +	ret = imx_media_csc_scaler_device_register(imxmd->m2m_vdev);
> +unlock:
> +	mutex_unlock(&imxmd->mutex);
> +	return ret;
> +}
> +
>   /* async subdev complete notifier */
>   static const struct v4l2_async_notifier_operations imx_media_notifier_ops = {
>   	.bound = imx_media_subdev_bound,
> -	.complete = imx_media_probe_complete,
> +	.complete = imx6_media_probe_complete,
>   };
>   
>   static int imx_media_probe(struct platform_device *pdev)
> @@ -85,6 +110,7 @@ static int imx_media_remove(struct platform_device *pdev)
>   	v4l2_async_notifier_unregister(&imxmd->notifier);
>   	imx_media_unregister_ipu_internal_subdevs(imxmd);
>   	v4l2_async_notifier_cleanup(&imxmd->notifier);
> +	imx_media_csc_scaler_device_unregister(imxmd->m2m_vdev);
>   	media_device_unregister(&imxmd->md);
>   	v4l2_device_unregister(&imxmd->v4l2_dev);
>   	media_device_cleanup(&imxmd->md);
> diff --git a/drivers/staging/media/imx/imx-media-internal-sd.c b/drivers/staging/media/imx/imx-media-internal-sd.c
> index cb1e4cdd5079..d4237e1a4241 100644
> --- a/drivers/staging/media/imx/imx-media-internal-sd.c
> +++ b/drivers/staging/media/imx/imx-media-internal-sd.c
> @@ -210,6 +210,10 @@ int imx_media_register_ipu_internal_subdevs(struct imx_media_dev *imxmd,
>   
>   	mutex_lock(&imxmd->mutex);
>   
> +	/* record this IPU */
> +	if (!imxmd->ipu[ipu_id])
> +		imxmd->ipu[ipu_id] = ipu;
> +
>   	/* register the synchronous subdevs */
>   	for (i = 0; i < NUM_IPU_SUBDEVS; i++) {
>   		intsd = &int_subdev[i];
> diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h
> index 4d124a86b358..11861191324a 100644
> --- a/drivers/staging/media/imx/imx-media.h
> +++ b/drivers/staging/media/imx/imx-media.h
> @@ -136,9 +136,15 @@ struct imx_media_dev {
>   	/* master video device list */
>   	struct list_head vdev_list;
>   
> +	/* IPUs this media driver control, valid after subdevs bound */
> +	struct ipu_soc *ipu[2];
> +
>   	/* for async subdev registration */
>   	struct v4l2_async_notifier notifier;
>   
> +	/* IC scaler/CSC mem2mem video device */
> +	struct imx_media_video_dev *m2m_vdev;
> +
>   	/* the IPU internal subdev's registered synchronously */
>   	struct v4l2_subdev *sync_sd[2][NUM_IPU_SUBDEVS];
>   };
> @@ -269,6 +275,12 @@ struct imx_media_buffer *
>   imx_media_capture_device_next_buf(struct imx_media_video_dev *vdev);
>   void imx_media_capture_device_error(struct imx_media_video_dev *vdev);
>   
> +/* imx-media-csc-scaler.c */
> +struct imx_media_video_dev *
> +imx_media_csc_scaler_device_init(struct imx_media_dev *dev);
> +int imx_media_csc_scaler_device_register(struct imx_media_video_dev *vdev);
> +void imx_media_csc_scaler_device_unregister(struct imx_media_video_dev *vdev);
> +
>   /* subdev group ids */
>   #define IMX_MEDIA_GRP_ID_CSI2          BIT(8)
>   #define IMX_MEDIA_GRP_ID_CSI           BIT(9)


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

* Re: [PATCH v9] media: imx: add csc/scaler mem2mem device
  2019-08-16 23:17 ` Steve Longerbeam
@ 2019-08-19 10:50   ` Philipp Zabel
  0 siblings, 0 replies; 4+ messages in thread
From: Philipp Zabel @ 2019-08-19 10:50 UTC (permalink / raw)
  To: Steve Longerbeam, linux-media; +Cc: kernel

Hi Steve,

On Fri, 2019-08-16 at 16:17 -0700, Steve Longerbeam wrote:
> Hi Philipp,
> 
> If you haven't already, can you please test rotation with this version, 
> with both non-tiled and tiled scaling conversions. I found rotation was 
> broken in v8.
> 
> Steve

I've tested a few resolutions with both 90° and 270° rotations.

Upscale:

32x24 320x240 640x480 768x320 768x432 720x404 720x480 1024x768 -> 768x1024 768x1280 1080x1920 1600x2560
1280x720 -> 1080x1920

Downscale:

3840x2160 -> 1080x1920
1920x1080 -> 1080x1280 768x1024 576x1024 576x1024 540x960

Note that for horizontal flips the seam hiding does not work properly,
due to not being able to overshoot the input scanline backwards.
This is apparent when scaling 32x24 -> 768x1280 1080x1920 with 180° or
270° rotation, for example.

regards
Philipp

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

end of thread, back to index

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-14 12:24 [PATCH v9] media: imx: add csc/scaler mem2mem device Philipp Zabel
2019-08-14 12:35 ` Philipp Zabel
2019-08-16 23:17 ` Steve Longerbeam
2019-08-19 10:50   ` Philipp Zabel

Linux-Media Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-media/0 linux-media/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-media linux-media/ https://lore.kernel.org/linux-media \
		linux-media@vger.kernel.org linux-media@archiver.kernel.org
	public-inbox-index linux-media


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-media


AGPL code for this site: git clone https://public-inbox.org/ public-inbox