From: Sascha Hauer <s.ha...@pengutronix.de>
This adds a video4linux mem2mem driver that deinterlaces input
frames using the IPUv3 VDIC module.
Signed-off-by: Sascha Hauer <s.ha...@pengutronix.de>
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
drivers/media/platform/imx/Kconfig | 9 +
drivers/media/platform/imx/Makefile | 1 +
drivers/media/platform/imx/imx-ipu-vdic.c | 716 ++++++++++++++++++++++++++++++
3 files changed, 726 insertions(+)
create mode 100644 drivers/media/platform/imx/imx-ipu-vdic.c
diff --git a/drivers/media/platform/imx/Kconfig
b/drivers/media/platform/imx/Kconfig
index 4694367..506326a 100644
--- a/drivers/media/platform/imx/Kconfig
+++ b/drivers/media/platform/imx/Kconfig
@@ -9,3 +9,12 @@ config VIDEO_IMX_IPU_SCALER
select V4L2_MEM2MEM_DEV
---help---
This is a v4l2 scaler video driver for the IPUv3 on i.MX5/6.
+
+config VIDEO_IMX_IPU_VDIC
+ tristate "i.MX5/6 IPUv3 based deinterlacer driver"
+ depends on VIDEO_DEV && IMX_IPUV3_CORE
+ select VIDEOBUF2_DMA_CONTIG
+ select VIDEO_IMX_IPU_COMMON
+ select V4L2_MEM2MEM_DEV
+ ---help---
+ This is a v4l2 deinterlacer video driver for the IPUv3 on i.MX5/6.
diff --git a/drivers/media/platform/imx/Makefile
b/drivers/media/platform/imx/Makefile
index f20aa0b..5c9da82 100644
--- a/drivers/media/platform/imx/Makefile
+++ b/drivers/media/platform/imx/Makefile
@@ -1,2 +1,3 @@
obj-$(CONFIG_VIDEO_IMX_IPU_COMMON) += imx-ipu.o
obj-$(CONFIG_VIDEO_IMX_IPU_SCALER) += imx-ipu-scaler.o
+obj-$(CONFIG_VIDEO_IMX_IPU_VDIC) += imx-ipu-vdic.o
diff --git a/drivers/media/platform/imx/imx-ipu-vdic.c
b/drivers/media/platform/imx/imx-ipu-vdic.c
new file mode 100644
index 0000000..f4c7a31
--- /dev/null
+++ b/drivers/media/platform/imx/imx-ipu-vdic.c
@@ -0,0 +1,716 @@
+/*
+ * i.MX IPUv3 vdic driver
+ *
+ * Copyright (C) 2011 Sascha Hauer, Pengutronix
+ *
+ * based on the mem2mem test driver
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#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 <linux/platform_device.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "imx-ipu.h"
+
+#define MIN_W 32
+#define MIN_H 32
+#define MAX_W 4096
+#define MAX_H 4096
+#define DIM_ALIGN_MASK 0x08 /* 8-alignment for dimensions */
+
+/* Flags that indicate a format can be used for capture/output */
+#define MEM2MEM_CAPTURE (1 << 0)
+#define MEM2MEM_OUTPUT (1 << 1)
+
+#define MEM2MEM_NAME "imx-ipuv3-vdic"
+
+/* Per queue */
+#define MEM2MEM_DEF_NUM_BUFS VIDEO_MAX_FRAME
+/* In bytes, per queue */
+#define MEM2MEM_VID_MEM_LIMIT (64 * 1024 * 1024)
+
+#define fh_to_ctx(__fh) container_of(__fh, struct ipu_vdic_ctx, fh)
+
+enum {
+ V4L2_M2M_SRC = 0,
+ V4L2_M2M_DST = 1,
+};
+
+struct ipu_vdic_dev {
+ struct v4l2_device v4l2_dev;
+ struct video_device *vfd;
+ struct device *dev;
+ struct ipu_soc *ipu;
+
+ atomic_t num_inst;
+ spinlock_t irqlock;
+
+ struct v4l2_m2m_dev *m2m_dev;
+ struct mutex dev_mutex;
+ struct ipuv3_channel *ipu_ch[4];
+};
+
+/* Per-queue, driver-specific private data */
+struct ipu_vdic_q_data {
+ struct v4l2_pix_format cur_fmt;
+};
+
+struct ipu_vdic_ctx {
+ struct ipu_vdic_dev *ipu_vdic;
+
+ struct v4l2_fh fh;
+ struct vb2_alloc_ctx *alloc_ctx;
+ struct ipu_vdic_q_data q_data[2];
+
+ struct vb2_buffer *in_p, *in;
+};
+
+static struct ipu_vdic_q_data *get_q_data(struct ipu_vdic_ctx *ctx,
+ enum v4l2_buf_type type)
+{
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ return &ctx->q_data[V4L2_M2M_SRC];
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ return &ctx->q_data[V4L2_M2M_DST];
+ default:
+ BUG();
+ }
+ return NULL;
+}
+
+/*
+ * mem2mem callbacks
+ */
+
+static void job_abort(void *priv)
+{
+}
+
+static void ipu_complete(void *priv, int err)
+{
+ struct ipu_vdic_dev *ipu_vdic = priv;
+ struct ipu_vdic_ctx *ctx;
+ struct vb2_buffer *dst_vb;
+ unsigned long flags;
+
+ ctx = v4l2_m2m_get_curr_priv(ipu_vdic->m2m_dev);
+
+ if (!ctx) {
+ dev_dbg(ipu_vdic->dev,
+ "Instance released before the end of transaction\n");
+ return;
+ }
+
+ spin_lock_irqsave(&ipu_vdic->irqlock, flags);
+
+ if (ctx->in_p != ctx->in)
+ v4l2_m2m_buf_done(ctx->in_p, err ? VB2_BUF_STATE_ERROR :
+ VB2_BUF_STATE_DONE);
+ ctx->in_p = ctx->in;
+
+ dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ dst_vb->v4l2_buf.timestamp = ctx->in->v4l2_buf.timestamp;
+ dst_vb->v4l2_buf.timecode = ctx->in->v4l2_buf.timecode;
+ v4l2_m2m_buf_done(dst_vb, err ? VB2_BUF_STATE_ERROR :
+ VB2_BUF_STATE_DONE);
+
+ spin_unlock_irqrestore(&ipu_vdic->irqlock, flags);
+
+ v4l2_m2m_job_finish(ipu_vdic->m2m_dev, ctx->fh.m2m_ctx);
+}
+
+static void device_run(void *priv)
+{
+ struct ipu_vdic_ctx *ctx = priv;
+ struct ipu_vdic_dev *ipu_vdic = ctx->ipu_vdic;
+ struct vb2_buffer *dst_buf;
+ struct ipu_vdic_q_data *q_data;
+ struct v4l2_pix_format *pix;
+ struct ipu_image image_in[3];
+ struct ipu_image image_out = {};
+ int i;
+
+ ctx->in = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+
+ if (!ctx->in_p)
+ ctx->in_p = ctx->in;
+
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+
+ q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ pix = &q_data->cur_fmt;
+
+ for (i = 0; i < 3; i++) {
+ struct ipu_image *image = &image_in[i];
+
+ memset(image, 0, sizeof(*image));
+ image->pix.width = pix->width;
+ image->pix.height = pix->height / 2;
+ image->pix.bytesperline = pix->bytesperline;
+ image->pix.pixelformat = pix->pixelformat;
+ image->rect.left = 0;
+ image->rect.top = 0;
+ image->rect.width = pix->width;
+ image->rect.height = pix->height / 2;
+ }
+ if (pix->field == V4L2_FIELD_INTERLACED_BT) {
+ for (i = 0; i < 3; i++)
+ image_in[i].pix.bytesperline = pix->bytesperline * 2;
+
+ image_in[0].phys = vb2_dma_contig_plane_dma_addr(ctx->in_p, 0);
+ image_in[1].phys = vb2_dma_contig_plane_dma_addr(ctx->in, 0) +
+ pix->bytesperline;
+ image_in[2].phys = vb2_dma_contig_plane_dma_addr(ctx->in, 0);
+ } else if (pix->field == V4L2_FIELD_INTERLACED_TB) {
+ for (i = 0; i < 3; i++)
+ image_in[i].pix.bytesperline = pix->bytesperline * 2;
+
+ image_in[0].phys = vb2_dma_contig_plane_dma_addr(ctx->in_p, 0) +
+ pix->bytesperline;
+ image_in[1].phys = vb2_dma_contig_plane_dma_addr(ctx->in, 0);
+ image_in[2].phys = vb2_dma_contig_plane_dma_addr(ctx->in, 0) +
+ pix->bytesperline;
+ } else {
+ image_in[0].phys = vb2_dma_contig_plane_dma_addr(ctx->in_p, 0) +
+ pix->bytesperline * pix->height / 2;
+ image_in[1].phys = vb2_dma_contig_plane_dma_addr(ctx->in, 0);
+ image_in[2].phys = vb2_dma_contig_plane_dma_addr(ctx->in, 0) +
+ pix->bytesperline * pix->height / 2;
+ }
+
+ q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ pix = &q_data->cur_fmt;
+
+ image_out.pix.width = pix->width;
+ image_out.pix.height = pix->height;
+ image_out.pix.bytesperline = pix->bytesperline;
+ image_out.pix.pixelformat = pix->pixelformat;
+ image_out.rect.left = 0;
+ image_out.rect.top = 0;
+ image_out.rect.width = pix->width;
+ image_out.rect.height = pix->height;
+ image_out.phys = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+
+ ipu_image_deinterlace_convert(ipu_vdic->ipu, &image_in[0], &image_in[1],
+ &image_in[2], &image_out, ipu_complete,
+ ipu_vdic);
+}
+
+/*
+ * video ioctls
+ */
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1);
+ strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1);
+ strncpy(cap->bus_info, "platform:" MEM2MEM_NAME,
+ sizeof(cap->bus_info) - 1);
+ /*
+ * This is only a mem-to-mem video device. The capture and output
+ * device capability flags are left for backward compatibility and
+ * are scheduled for removal.
+ */
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
+ V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ return ipu_enum_fmt(file, priv, f);
+}
+
+static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ return ipu_enum_fmt(file, priv, f);
+}
+
+static int vidioc_g_fmt(struct ipu_vdic_ctx *ctx, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct ipu_vdic_q_data *q_data;
+ struct v4l2_pix_format *pix;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = get_q_data(ctx, f->type);
+ pix = &q_data->cur_fmt;
+
+ return ipu_g_fmt(f, pix);
+}
+
+static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ return vidioc_g_fmt(priv, f);
+}
+
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ return vidioc_g_fmt(priv, f);
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ return ipu_try_fmt(file, priv, f);
+}
+
+static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ enum v4l2_field field = f->fmt.pix.field;
+ int ret;
+
+ switch (f->fmt.pix.field) {
+ case V4L2_FIELD_SEQ_BT:
+ case V4L2_FIELD_INTERLACED_BT:
+ pr_warn("%s: %s not supported yet\n", __func__,
+ v4l2_field_names[f->fmt.pix.field]);
+ /* fallthrough */
+ case V4L2_FIELD_ANY:
+ case V4L2_FIELD_NONE:
+ case V4L2_FIELD_TOP:
+ case V4L2_FIELD_BOTTOM:
+ case V4L2_FIELD_INTERLACED:
+ field = V4L2_FIELD_INTERLACED_TB;
+ break;
+ case V4L2_FIELD_SEQ_TB:
+ case V4L2_FIELD_INTERLACED_TB:
+ break;
+ }
+
+ ret = ipu_try_fmt(file, priv, f);
+
+ f->fmt.pix.field = field;
+
+ return ret;
+}
+
+static int vidioc_s_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct ipu_vdic_q_data *q_data;
+ struct vb2_queue *vq;
+ struct ipu_vdic_ctx *ctx = fh_to_ctx(priv);
+ enum v4l2_field field = V4L2_FIELD_ANY;
+ int ret;
+
+ vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&ctx->ipu_vdic->v4l2_dev, "%s queue busy\n", __func__);
+ return -EBUSY;
+ }
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ vidioc_try_fmt_vid_out(file, priv, f);
+ field = f->fmt.pix.field;
+ }
+
+ ret = ipu_s_fmt(file, priv, f, &q_data->cur_fmt);
+
+ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ f->fmt.pix.field = field;
+ q_data->cur_fmt.field = field;
+ }
+
+ return ret;
+}
+
+static int vidioc_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ return ipu_enum_framesizes(file, fh, fsize);
+}
+
+static const struct v4l2_ioctl_ops ipu_vdic_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt,
+
+ .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
+ .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
+ .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
+ .vidioc_s_fmt_vid_out = vidioc_s_fmt,
+
+ .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_enum_framesizes = vidioc_enum_framesizes,
+};
+
+
+/*
+ * Queue operations
+ */
+
+static int ipu_vdic_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ void *alloc_ctxs[])
+{
+ struct ipu_vdic_ctx *ctx = vb2_get_drv_priv(vq);
+ struct ipu_vdic_q_data *q_data;
+ unsigned int size, count = *nbuffers;
+ struct v4l2_pix_format *pix;
+
+ q_data = get_q_data(ctx, vq->type);
+ pix = &q_data->cur_fmt;
+
+ size = pix->sizeimage;
+
+ while (size * count > MEM2MEM_VID_MEM_LIMIT)
+ (count)--;
+
+ *nplanes = 1;
+ *nbuffers = count;
+ sizes[0] = size;
+
+ ctx->alloc_ctx = vb2_dma_contig_init_ctx(ctx->ipu_vdic->dev);
+ if (IS_ERR(ctx->alloc_ctx))
+ return PTR_ERR(ctx->alloc_ctx);
+
+ alloc_ctxs[0] = ctx->alloc_ctx;
+
+ dev_dbg(ctx->ipu_vdic->dev, "get %d buffer(s) of size %d each.\n",
+ count, size);
+
+ return 0;
+}
+
+static int ipu_vdic_buf_prepare(struct vb2_buffer *vb)
+{
+ struct ipu_vdic_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct ipu_vdic_q_data *q_data;
+ struct v4l2_pix_format *pix;
+
+ dev_dbg(ctx->ipu_vdic->dev, "type: %d\n", vb->vb2_queue->type);
+
+ q_data = get_q_data(ctx, vb->vb2_queue->type);
+ pix = &q_data->cur_fmt;
+
+ if (vb2_plane_size(vb, 0) < pix->sizeimage) {
+ dev_dbg(ctx->ipu_vdic->dev,
+ "%s data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0),
+ (long)pix->sizeimage);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, pix->sizeimage);
+
+ return 0;
+}
+
+static void ipu_vdic_buf_queue(struct vb2_buffer *vb)
+{
+ struct ipu_vdic_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+
+ v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
+}
+
+static int ipu_vdic_stop_streaming(struct vb2_queue *q)
+{
+ struct ipu_vdic_ctx *ctx = vb2_get_drv_priv(q);
+ struct vb2_buffer *buf;
+
+ 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);
+ if (ctx->in_p) {
+ v4l2_m2m_buf_done(ctx->in_p, VB2_BUF_STATE_ERROR);
+ ctx->in_p = NULL;
+ }
+ } else {
+ while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
+ v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
+ }
+
+ return 0;
+}
+
+static struct vb2_ops ipu_vdic_qops = {
+ .queue_setup = ipu_vdic_queue_setup,
+ .buf_prepare = ipu_vdic_buf_prepare,
+ .buf_queue = ipu_vdic_buf_queue,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .stop_streaming = ipu_vdic_stop_streaming,
+};
+
+static int queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct ipu_vdic_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_USERPTR | VB2_DMABUF;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ src_vq->ops = &ipu_vdic_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+ src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ src_vq->lock = &ctx->ipu_vdic->dev_mutex;
+
+ 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_USERPTR | VB2_DMABUF;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->ops = &ipu_vdic_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+ dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ dst_vq->lock = &ctx->ipu_vdic->dev_mutex;
+
+ return vb2_queue_init(dst_vq);
+}
+
+/*
+ * File operations
+ */
+static int ipu_vdic_open(struct file *file)
+{
+ struct ipu_vdic_dev *ipu_vdic = video_drvdata(file);
+ struct ipu_vdic_ctx *ctx = NULL;
+ const int width = 720;
+ const int height = 576;
+ int i;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ file->private_data = ctx;
+ v4l2_fh_init(&ctx->fh, video_devdata(file));
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+ ctx->ipu_vdic = ipu_vdic;
+
+ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(ipu_vdic->m2m_dev, ctx,
+ &queue_init);
+ if (IS_ERR(ctx->fh.m2m_ctx)) {
+ int ret = PTR_ERR(ctx->fh.m2m_ctx);
+
+ kfree(ctx);
+ return ret;
+ }
+
+ for (i = 0; i < 2; i++) {
+ ctx->q_data[i].cur_fmt.width = width;
+ ctx->q_data[i].cur_fmt.height = height;
+ ctx->q_data[i].cur_fmt.bytesperline = width;
+ ctx->q_data[i].cur_fmt.pixelformat = V4L2_PIX_FMT_YUV420;
+ ctx->q_data[i].cur_fmt.sizeimage = width * height * 3 / 2;
+ ctx->q_data[i].cur_fmt.colorspace = V4L2_COLORSPACE_REC709;
+ }
+
+ atomic_inc(&ipu_vdic->num_inst);
+
+ dev_dbg(ipu_vdic->dev, "Created instance %p, m2m_ctx: %p\n",
+ ctx, ctx->fh.m2m_ctx);
+
+ return 0;
+}
+
+static int ipu_vdic_release(struct file *file)
+{
+ struct ipu_vdic_dev *ipu_vdic = video_drvdata(file);
+ struct ipu_vdic_ctx *ctx = fh_to_ctx(file->private_data);
+
+ dev_dbg(ipu_vdic->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(&ipu_vdic->num_inst);
+
+ return 0;
+}
+
+static const struct v4l2_file_operations ipu_vdic_fops = {
+ .owner = THIS_MODULE,
+ .open = ipu_vdic_open,
+ .release = ipu_vdic_release,
+ .poll = v4l2_m2m_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = v4l2_m2m_fop_mmap,
+};
+
+static struct video_device ipu_vdic_videodev = {
+ .name = MEM2MEM_NAME,
+ .fops = &ipu_vdic_fops,
+ .ioctl_ops = &ipu_vdic_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release,
+ .vfl_dir = VFL_DIR_M2M,
+};
+
+static struct v4l2_m2m_ops m2m_ops = {
+ .device_run = device_run,
+ .job_abort = job_abort,
+};
+
+static u64 vout_dmamask = ~(u32)0;
+
+static int ipu_vdic_probe(struct platform_device *pdev)
+{
+ struct ipu_vdic_dev *ipu_vdic;
+ struct video_device *vfd;
+ struct ipu_soc *ipu = dev_get_drvdata(pdev->dev.parent);
+ int ret;
+
+ pdev->dev.dma_mask = &vout_dmamask;
+ pdev->dev.coherent_dma_mask = 0xffffffff;
+
+ ipu_vdic = devm_kzalloc(&pdev->dev, sizeof(*ipu_vdic), GFP_KERNEL);
+ if (!ipu_vdic)
+ return -ENOMEM;
+
+ ipu_vdic->ipu = ipu;
+ ipu_vdic->dev = &pdev->dev;
+
+ spin_lock_init(&ipu_vdic->irqlock);
+ mutex_init(&ipu_vdic->dev_mutex);
+
+ ret = v4l2_device_register(&pdev->dev, &ipu_vdic->v4l2_dev);
+ if (ret)
+ return ret;
+
+ atomic_set(&ipu_vdic->num_inst, 0);
+
+ vfd = video_device_alloc();
+ if (!vfd) {
+ dev_err(ipu_vdic->dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto unreg_dev;
+ }
+
+ *vfd = ipu_vdic_videodev;
+ vfd->lock = &ipu_vdic->dev_mutex;
+ vfd->v4l2_dev = &ipu_vdic->v4l2_dev;
+
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
+ if (ret) {
+ dev_err(ipu_vdic->dev, "Failed to register video device\n");
+ goto rel_vdev;
+ }
+
+ video_set_drvdata(vfd, ipu_vdic);
+ snprintf(vfd->name, sizeof(vfd->name), "%s", ipu_vdic_videodev.name);
+ ipu_vdic->vfd = vfd;
+ dev_dbg(ipu_vdic->dev, "Device registered as /dev/video%d\n", vfd->num);
+
+ platform_set_drvdata(pdev, ipu_vdic);
+
+ ipu_vdic->m2m_dev = v4l2_m2m_init(&m2m_ops);
+ if (IS_ERR(ipu_vdic->m2m_dev)) {
+ dev_err(ipu_vdic->dev, "Failed to init mem2mem device\n");
+ ret = PTR_ERR(ipu_vdic->m2m_dev);
+ goto err_m2m;
+ }
+
+ return 0;
+
+ v4l2_m2m_release(ipu_vdic->m2m_dev);
+err_m2m:
+ video_unregister_device(ipu_vdic->vfd);
+rel_vdev:
+ video_device_release(vfd);
+unreg_dev:
+ v4l2_device_unregister(&ipu_vdic->v4l2_dev);
+
+ return ret;
+}
+
+static int ipu_vdic_remove(struct platform_device *pdev)
+{
+ struct ipu_vdic_dev *ipu_vdic =
+ (struct ipu_vdic_dev *)platform_get_drvdata(pdev);
+
+ v4l2_m2m_release(ipu_vdic->m2m_dev);
+ video_unregister_device(ipu_vdic->vfd);
+ v4l2_device_unregister(&ipu_vdic->v4l2_dev);
+ kfree(ipu_vdic);
+
+ return 0;
+}
+
+static struct platform_driver ipu_vdic_pdrv = {
+ .probe = ipu_vdic_probe,
+ .remove = ipu_vdic_remove,
+ .driver = {
+ .name = "imx-ipuv3-vdic",
+ .owner = THIS_MODULE,
+ },
+};
+
+static void __exit ipu_vdic_exit(void)
+{
+ platform_driver_unregister(&ipu_vdic_pdrv);
+}
+
+static int __init ipu_vdic_init(void)
+{
+ return platform_driver_register(&ipu_vdic_pdrv);
+}
+
+module_init(ipu_vdic_init);
+module_exit(ipu_vdic_exit);
+
+MODULE_DESCRIPTION("Virtual device for mem2mem framework testing");
+MODULE_AUTHOR("Sascha Hauer <s.ha...@pengutronix.de>");
+MODULE_LICENSE("GPL");
--
2.0.0.rc2
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