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.za...@pengutronix.de>
[steve_longerb...@mentor.com: use ipu_image_convert_adjust(), fix
device_run() error handling]
Signed-off-by: Steve Longerbeam <steve_longerb...@mentor.com>
---
Changes since v2:
- Rely on ipu_image_convert_adjust() in mem2mem_try_fmt() for format
adjustments. This makes the mem2mem driver mostly a V4L2 mem2mem API
wrapper around the IPU image converter, and independent of the
internal image converter implementation.
- Remove the source and destination buffers on error in device_run().
Otherwise the conversion is re-attempted apparently over and over
again (with WARN() backtraces).
- Allow subscribing to control changes.
---
drivers/staging/media/imx/Kconfig | 1 +
drivers/staging/media/imx/Makefile | 1 +
drivers/staging/media/imx/imx-media-dev.c | 11 +
drivers/staging/media/imx/imx-media-mem2mem.c | 873 ++++++++++++++++++
drivers/staging/media/imx/imx-media.h | 10 +
5 files changed, 896 insertions(+)
create mode 100644 drivers/staging/media/imx/imx-media-mem2mem.c
diff --git a/drivers/staging/media/imx/Kconfig
b/drivers/staging/media/imx/Kconfig
index bfc17de56b17..07013cb3cb66 100644
--- a/drivers/staging/media/imx/Kconfig
+++ b/drivers/staging/media/imx/Kconfig
@@ -6,6 +6,7 @@ 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 698a4210316e..f2e722d0fa19 100644
--- a/drivers/staging/media/imx/Makefile
+++ b/drivers/staging/media/imx/Makefile
@@ -6,6 +6,7 @@ imx-media-ic-objs := imx-ic-common.o imx-ic-prp.o
imx-ic-prpencvf.o
obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media.o
obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media-common.o
obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media-capture.o
+obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media-mem2mem.o
obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media-vdic.o
obj-$(CONFIG_VIDEO_IMX_MEDIA) += imx-media-ic.o
diff --git a/drivers/staging/media/imx/imx-media-dev.c
b/drivers/staging/media/imx/imx-media-dev.c
index 1931d1b038dc..9c59687612a0 100644
--- a/drivers/staging/media/imx/imx-media-dev.c
+++ b/drivers/staging/media/imx/imx-media-dev.c
@@ -359,6 +359,17 @@ static int imx_media_probe_complete(struct
v4l2_async_notifier *notifier)
goto unlock;
ret = v4l2_device_register_subdev_nodes(&imxmd->v4l2_dev);
+ if (ret)
+ goto unlock;
+
+ /* TODO: check whether we have IC subdevices first */
+ imxmd->m2m_vdev = imx_media_mem2mem_device_init(imxmd);
+ if (IS_ERR(imxmd->m2m_vdev)) {
+ ret = PTR_ERR(imxmd->m2m_vdev);
+ goto unlock;
+ }
+
+ ret = imx_media_mem2mem_device_register(imxmd->m2m_vdev);
unlock:
mutex_unlock(&imxmd->mutex);
if (ret)
diff --git a/drivers/staging/media/imx/imx-media-mem2mem.c
b/drivers/staging/media/imx/imx-media-mem2mem.c
new file mode 100644
index 000000000000..a2a4dca017ce
--- /dev/null
+++ b/drivers/staging/media/imx/imx-media-mem2mem.c
@@ -0,0 +1,873 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * i.MX IPUv3 mem2mem Scaler/CSC 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/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 mem2mem_ctx, fh)
+
+enum {
+ V4L2_M2M_SRC = 0,
+ V4L2_M2M_DST = 1,
+};
+
+struct mem2mem_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 */
+
+ atomic_t num_inst;
+};
+
+#define to_mem2mem_priv(v) container_of(v, struct mem2mem_priv, vdev)
+
+/* Per-queue, driver-specific private data */
+struct mem2mem_q_data {
+ struct v4l2_pix_format cur_fmt;
+ struct v4l2_rect rect;
+};
+
+struct mem2mem_ctx {
+ struct mem2mem_priv *priv;
+
+ struct v4l2_fh fh;
+ struct mem2mem_q_data q_data[2];
+ int error;
+ struct ipu_image_convert_ctx *icc;
+
+ struct v4l2_ctrl_handler ctrl_hdlr;
+ int rotate;
+ bool hflip;
+ bool vflip;
+ enum ipu_rotate_mode rot_mode;
+};
+
+static struct mem2mem_q_data *get_q_data(struct mem2mem_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 mem2mem_ctx *ctx = _ctx;
+
+ if (ctx->icc)
+ ipu_image_convert_abort(ctx->icc);
+}
+
+static void mem2mem_ic_complete(struct ipu_image_convert_run *run, void *_ctx)
+{
+ struct mem2mem_ctx *ctx = _ctx;
+ struct mem2mem_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);
+
+ dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
+ dst_buf->timecode = src_buf->timecode;
+
+ 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 mem2mem_ctx *ctx = _ctx;
+ struct mem2mem_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 vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ strncpy(cap->driver, "imx-media-mem2mem", sizeof(cap->driver) - 1);
+ strncpy(cap->card, "imx-media-mem2mem", sizeof(cap->card) - 1);
+ strncpy(cap->bus_info, "platform:imx-media-mem2mem",
+ sizeof(cap->bus_info) - 1);
+ cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+}
+
+static int mem2mem_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 mem2mem_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct mem2mem_ctx *ctx = fh_to_ctx(priv);
+ struct mem2mem_q_data *q_data;
+
+ q_data = get_q_data(ctx, f->type);
+
+ f->fmt.pix = q_data->cur_fmt;
+
+ return 0;
+}
+
+static int mem2mem_try_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct mem2mem_ctx *ctx = fh_to_ctx(priv);
+ struct mem2mem_q_data *q_data = get_q_data(ctx, f->type);
+ struct ipu_image test_in, test_out;
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ struct mem2mem_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 mem2mem_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 mem2mem_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct mem2mem_q_data *q_data;
+ struct mem2mem_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 = mem2mem_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 mem2mem_g_selection(struct file *file, void *priv,
+ struct v4l2_selection *s)
+{
+ struct mem2mem_ctx *ctx = fh_to_ctx(priv);
+ struct mem2mem_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:
+ case V4L2_SEL_TGT_COMPOSE_PADDED:
+ 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 mem2mem_s_selection(struct file *file, void *priv,
+ struct v4l2_selection *s)
+{
+ struct mem2mem_ctx *ctx = fh_to_ctx(priv);
+ struct mem2mem_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 mem2mem_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+
+ .vidioc_enum_fmt_vid_cap = mem2mem_enum_fmt,
+ .vidioc_g_fmt_vid_cap = mem2mem_g_fmt,
+ .vidioc_try_fmt_vid_cap = mem2mem_try_fmt,
+ .vidioc_s_fmt_vid_cap = mem2mem_s_fmt,
+
+ .vidioc_enum_fmt_vid_out = mem2mem_enum_fmt,
+ .vidioc_g_fmt_vid_out = mem2mem_g_fmt,
+ .vidioc_try_fmt_vid_out = mem2mem_try_fmt,
+ .vidioc_s_fmt_vid_out = mem2mem_s_fmt,
+
+ .vidioc_g_selection = mem2mem_g_selection,
+ .vidioc_s_selection = mem2mem_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_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 mem2mem_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct mem2mem_ctx *ctx = vb2_get_drv_priv(vq);
+ struct mem2mem_q_data *q_data;
+ unsigned int count = *nbuffers;
+ struct v4l2_pix_format *pix;
+
+ q_data = get_q_data(ctx, vq->type);
+ pix = &q_data->cur_fmt;
+
+ *nplanes = 1;
+ *nbuffers = count;
+ sizes[0] = pix->sizeimage;
+
+ dev_dbg(ctx->priv->dev, "get %d buffer(s) of size %d each.\n",
+ count, pix->sizeimage);
+
+ return 0;
+}
+
+static int mem2mem_buf_prepare(struct vb2_buffer *vb)
+{
+ struct mem2mem_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct mem2mem_q_data *q_data;
+ struct v4l2_pix_format *pix;
+ unsigned int plane_size, payload;
+
+ dev_dbg(ctx->priv->dev, "type: %d\n", vb->vb2_queue->type);
+
+ q_data = get_q_data(ctx, vb->vb2_queue->type);
+ pix = &q_data->cur_fmt;
+ plane_size = pix->sizeimage;
+
+ if (vb2_plane_size(vb, 0) < plane_size) {
+ dev_dbg(ctx->priv->dev,
+ "%s data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0), (long)plane_size);
+ return -EINVAL;
+ }
+
+ payload = pix->bytesperline * pix->height;
+ if (pix->pixelformat == V4L2_PIX_FMT_YUV420 ||
+ pix->pixelformat == V4L2_PIX_FMT_YVU420 ||
+ pix->pixelformat == V4L2_PIX_FMT_NV12)
+ payload = payload * 3 / 2;
+ else if (pix->pixelformat == V4L2_PIX_FMT_YUV422P ||
+ pix->pixelformat == V4L2_PIX_FMT_NV16)
+ payload *= 2;
+
+ vb2_set_plane_payload(vb, 0, payload);
+
+ return 0;
+}
+
+static void mem2mem_buf_queue(struct vb2_buffer *vb)
+{
+ struct mem2mem_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 mem2mem_q_data *q_data)
+{
+ im->pix.width = q_data->cur_fmt.width;
+ im->pix.height = q_data->cur_fmt.height;
+ im->pix.bytesperline = q_data->cur_fmt.bytesperline;
+ im->pix.pixelformat = q_data->cur_fmt.pixelformat;
+ im->rect = q_data->rect;
+}
+
+static int mem2mem_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ const enum ipu_ic_task ic_task = IC_TASK_POST_PROCESSOR;
+ struct mem2mem_ctx *ctx = vb2_get_drv_priv(q);
+ struct mem2mem_priv *priv = ctx->priv;
+ struct ipu_soc *ipu = priv->md->ipu[0];
+ struct mem2mem_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,
+ mem2mem_ic_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 mem2mem_stop_streaming(struct vb2_queue *q)
+{
+ struct mem2mem_ctx *ctx = vb2_get_drv_priv(q);
+ struct vb2_v4l2_buffer *buf;
+
+ if (ctx->icc) {
+ ipu_image_convert_unprepare(ctx->icc);
+ ctx->icc = NULL;
+ }
+
+ 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 mem2mem_qops = {
+ .queue_setup = mem2mem_queue_setup,
+ .buf_prepare = mem2mem_buf_prepare,
+ .buf_queue = mem2mem_buf_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .start_streaming = mem2mem_start_streaming,
+ .stop_streaming = mem2mem_stop_streaming,
+};
+
+static int queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct mem2mem_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 = &mem2mem_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 = &mem2mem_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 mem2mem_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct mem2mem_ctx *ctx = container_of(ctrl->handler,
+ struct mem2mem_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 vb2_queue *cap_q;
+
+ cap_q = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+ V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (vb2_is_streaming(cap_q))
+ return -EBUSY;
+
+ ctx->rot_mode = rot_mode;
+ ctx->rotate = rotate;
+ ctx->hflip = hflip;
+ ctx->vflip = vflip;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops mem2mem_ctrl_ops = {
+ .s_ctrl = mem2mem_s_ctrl,
+};
+
+static int mem2mem_init_controls(struct mem2mem_ctx *ctx)
+{
+ struct v4l2_ctrl_handler *hdlr = &ctx->ctrl_hdlr;
+ int ret;
+
+ v4l2_ctrl_handler_init(hdlr, 3);
+
+ v4l2_ctrl_new_std(hdlr, &mem2mem_ctrl_ops, V4L2_CID_HFLIP,
+ 0, 1, 1, 0);
+ v4l2_ctrl_new_std(hdlr, &mem2mem_ctrl_ops, V4L2_CID_VFLIP,
+ 0, 1, 1, 0);
+ v4l2_ctrl_new_std(hdlr, &mem2mem_ctrl_ops, V4L2_CID_ROTATE,
+ 0, 270, 90, 0);
+
+ if (hdlr->error) {
+ ret = hdlr->error;
+ goto out_free;
+ }
+
+ v4l2_ctrl_handler_setup(hdlr);
+ return 0;
+
+out_free:
+ v4l2_ctrl_handler_free(hdlr);
+ return ret;
+}
+
+#define DEFAULT_WIDTH 720
+#define DEFAULT_HEIGHT 576
+static const struct mem2mem_q_data mem2mem_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 mem2mem_open(struct file *file)
+{
+ struct mem2mem_priv *priv = video_drvdata(file);
+ struct mem2mem_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,
+ &queue_init);
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ ret = PTR_ERR(ctx->fh.m2m_ctx);
+ goto err_ctx;
+ }
+
+ ret = mem2mem_init_controls(ctx);
+ if (ret)
+ goto err_ctrls;
+
+ ctx->fh.ctrl_handler = &ctx->ctrl_hdlr;
+
+ ctx->q_data[V4L2_M2M_SRC] = mem2mem_q_data_default;
+ ctx->q_data[V4L2_M2M_DST] = mem2mem_q_data_default;
+
+ atomic_inc(&priv->num_inst);
+
+ 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 mem2mem_release(struct file *file)
+{
+ struct mem2mem_priv *priv = video_drvdata(file);
+ struct mem2mem_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);
+
+ atomic_dec(&priv->num_inst);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations mem2mem_fops = {
+ .owner = THIS_MODULE,
+ .open = mem2mem_open,
+ .release = mem2mem_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 const struct video_device mem2mem_videodev_template = {
+ .name = "ipu0_ic_pp mem2mem",
+ .fops = &mem2mem_fops,
+ .ioctl_ops = &mem2mem_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release,
+ .vfl_dir = VFL_DIR_M2M,
+ .tvnorms = V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM,
+ .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
+};
+
+int imx_media_mem2mem_device_register(struct imx_media_video_dev *vdev)
+{
+ struct mem2mem_priv *priv = to_mem2mem_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;
+}
+EXPORT_SYMBOL_GPL(imx_media_mem2mem_device_register);
+
+void imx_media_mem2mem_device_unregister(struct imx_media_video_dev *vdev)
+{
+ struct mem2mem_priv *priv = to_mem2mem_priv(vdev);
+ struct video_device *vfd = priv->vdev.vfd;
+
+ mutex_lock(&priv->mutex);
+
+ if (video_is_registered(vfd)) {
+ video_unregister_device(vfd);
+ media_entity_cleanup(&vfd->entity);
+ }
+
+ mutex_unlock(&priv->mutex);
+}
+EXPORT_SYMBOL_GPL(imx_media_mem2mem_device_unregister);
+
+struct imx_media_video_dev *
+imx_media_mem2mem_device_init(struct imx_media_dev *md)
+{
+ struct mem2mem_priv *priv;
+ struct video_device *vfd;
+ int ret;
+
+ priv = devm_kzalloc(md->md.dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return ERR_PTR(-ENOMEM);
+
+ priv->md = md;
+ priv->dev = md->md.dev;
+
+ mutex_init(&priv->mutex);
+ atomic_set(&priv->num_inst, 0);
+
+ vfd = video_device_alloc();
+ if (!vfd)
+ return ERR_PTR(-ENOMEM);
+
+ *vfd = mem2mem_videodev_template;
+ snprintf(vfd->name, sizeof(vfd->name), "ipu_ic_pp mem2mem");
+ 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);
+ return ERR_PTR(ret);
+ }
+
+ return &priv->vdev;
+}
+EXPORT_SYMBOL_GPL(imx_media_mem2mem_device_init);
+
+void imx_media_mem2mem_device_remove(struct imx_media_video_dev *vdev)
+{
+ struct mem2mem_priv *priv = to_mem2mem_priv(vdev);
+
+ v4l2_m2m_release(priv->m2m_dev);
+}
+EXPORT_SYMBOL_GPL(imx_media_mem2mem_device_remove);
+
+MODULE_DESCRIPTION("i.MX IPUv3 mem2mem scaler/CSC driver");
+MODULE_AUTHOR("Sascha Hauer <s.ha...@pengutronix.de>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/media/imx/imx-media.h
b/drivers/staging/media/imx/imx-media.h
index 57bd094cf765..ce8b15ca401c 100644
--- a/drivers/staging/media/imx/imx-media.h
+++ b/drivers/staging/media/imx/imx-media.h
@@ -151,6 +151,9 @@ struct imx_media_dev {
/* for async subdev registration */
struct list_head asd_list;
struct v4l2_async_notifier subdev_notifier;
+
+ /* IC scaler/CSC mem2mem video device */
+ struct imx_media_video_dev *m2m_vdev;
};
enum codespace_sel {
@@ -264,6 +267,13 @@ void imx_media_capture_device_set_format(struct
imx_media_video_dev *vdev,
struct v4l2_pix_format *pix);
void imx_media_capture_device_error(struct imx_media_video_dev *vdev);
+/* imx-media-mem2mem.c */
+struct imx_media_video_dev *
+imx_media_mem2mem_device_init(struct imx_media_dev *dev);
+void imx_media_mem2mem_device_remove(struct imx_media_video_dev *vdev);
+int imx_media_mem2mem_device_register(struct imx_media_video_dev *vdev);
+void imx_media_mem2mem_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
--
2.19.0
