1 files changed, 0 insertions, 480 deletions

diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
deleted file mode 100644
index 23e740c1c5c0..000000000000
--- a/drivers/media/platform/vimc/vimc-capture.c
+++ /dev/null
@@ -1,480 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * vimc-capture.c Virtual Media Controller Driver
- *
- * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
- */
-
-#include <media/v4l2-ioctl.h>
-#include <media/videobuf2-core.h>
-#include <media/videobuf2-vmalloc.h>
-
-#include "vimc-common.h"
-#include "vimc-streamer.h"
-
-struct vimc_cap_device {
-	struct vimc_ent_device ved;
-	struct video_device vdev;
-	struct v4l2_pix_format format;
-	struct vb2_queue queue;
-	struct list_head buf_list;
-	/*
-	 * NOTE: in a real driver, a spin lock must be used to access the
-	 * queue because the frames are generated from a hardware interruption
-	 * and the isr is not allowed to sleep.
-	 * Even if it is not necessary a spinlock in the vimc driver, we
-	 * use it here as a code reference
-	 */
-	spinlock_t qlock;
-	struct mutex lock;
-	u32 sequence;
-	struct vimc_stream stream;
-	struct media_pad pad;
-};
-
-static const struct v4l2_pix_format fmt_default = {
-	.width = 640,
-	.height = 480,
-	.pixelformat = V4L2_PIX_FMT_RGB24,
-	.field = V4L2_FIELD_NONE,
-	.colorspace = V4L2_COLORSPACE_DEFAULT,
-};
-
-struct vimc_cap_buffer {
-	/*
-	 * struct vb2_v4l2_buffer must be the first element
-	 * the videobuf2 framework will allocate this struct based on
-	 * buf_struct_size and use the first sizeof(struct vb2_buffer) bytes of
-	 * memory as a vb2_buffer
-	 */
-	struct vb2_v4l2_buffer vb2;
-	struct list_head list;
-};
-
-static int vimc_cap_querycap(struct file *file, void *priv,
-			     struct v4l2_capability *cap)
-{
-	strscpy(cap->driver, VIMC_PDEV_NAME, sizeof(cap->driver));
-	strscpy(cap->card, KBUILD_MODNAME, sizeof(cap->card));
-	snprintf(cap->bus_info, sizeof(cap->bus_info),
-		 "platform:%s", VIMC_PDEV_NAME);
-
-	return 0;
-}
-
-static void vimc_cap_get_format(struct vimc_ent_device *ved,
-				struct v4l2_pix_format *fmt)
-{
-	struct vimc_cap_device *vcap = container_of(ved, struct vimc_cap_device,
-						    ved);
-
-	*fmt = vcap->format;
-}
-
-static int vimc_cap_g_fmt_vid_cap(struct file *file, void *priv,
-				  struct v4l2_format *f)
-{
-	struct vimc_cap_device *vcap = video_drvdata(file);
-
-	f->fmt.pix = vcap->format;
-
-	return 0;
-}
-
-static int vimc_cap_try_fmt_vid_cap(struct file *file, void *priv,
-				    struct v4l2_format *f)
-{
-	struct v4l2_pix_format *format = &f->fmt.pix;
-	const struct vimc_pix_map *vpix;
-
-	format->width = clamp_t(u32, format->width, VIMC_FRAME_MIN_WIDTH,
-				VIMC_FRAME_MAX_WIDTH) & ~1;
-	format->height = clamp_t(u32, format->height, VIMC_FRAME_MIN_HEIGHT,
-				 VIMC_FRAME_MAX_HEIGHT) & ~1;
-
-	/* Don't accept a pixelformat that is not on the table */
-	vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
-	if (!vpix) {
-		format->pixelformat = fmt_default.pixelformat;
-		vpix = vimc_pix_map_by_pixelformat(format->pixelformat);
-	}
-	/* TODO: Add support for custom bytesperline values */
-	format->bytesperline = format->width * vpix->bpp;
-	format->sizeimage = format->bytesperline * format->height;
-
-	if (format->field == V4L2_FIELD_ANY)
-		format->field = fmt_default.field;
-
-	vimc_colorimetry_clamp(format);
-
-	return 0;
-}
-
-static int vimc_cap_s_fmt_vid_cap(struct file *file, void *priv,
-				  struct v4l2_format *f)
-{
-	struct vimc_cap_device *vcap = video_drvdata(file);
-	int ret;
-
-	/* Do not change the format while stream is on */
-	if (vb2_is_busy(&vcap->queue))
-		return -EBUSY;
-
-	ret = vimc_cap_try_fmt_vid_cap(file, priv, f);
-	if (ret)
-		return ret;
-
-	dev_dbg(vcap->ved.dev, "%s: format update: "
-		"old:%dx%d (0x%x, %d, %d, %d, %d) "
-		"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vcap->vdev.name,
-		/* old */
-		vcap->format.width, vcap->format.height,
-		vcap->format.pixelformat, vcap->format.colorspace,
-		vcap->format.quantization, vcap->format.xfer_func,
-		vcap->format.ycbcr_enc,
-		/* new */
-		f->fmt.pix.width, f->fmt.pix.height,
-		f->fmt.pix.pixelformat,	f->fmt.pix.colorspace,
-		f->fmt.pix.quantization, f->fmt.pix.xfer_func,
-		f->fmt.pix.ycbcr_enc);
-
-	vcap->format = f->fmt.pix;
-
-	return 0;
-}
-
-static int vimc_cap_enum_fmt_vid_cap(struct file *file, void *priv,
-				     struct v4l2_fmtdesc *f)
-{
-	const struct vimc_pix_map *vpix = vimc_pix_map_by_index(f->index);
-
-	if (!vpix)
-		return -EINVAL;
-
-	f->pixelformat = vpix->pixelformat;
-
-	return 0;
-}
-
-static int vimc_cap_enum_framesizes(struct file *file, void *fh,
-				    struct v4l2_frmsizeenum *fsize)
-{
-	const struct vimc_pix_map *vpix;
-
-	if (fsize->index)
-		return -EINVAL;
-
-	/* Only accept code in the pix map table */
-	vpix = vimc_pix_map_by_code(fsize->pixel_format);
-	if (!vpix)
-		return -EINVAL;
-
-	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
-	fsize->stepwise.min_width = VIMC_FRAME_MIN_WIDTH;
-	fsize->stepwise.max_width = VIMC_FRAME_MAX_WIDTH;
-	fsize->stepwise.min_height = VIMC_FRAME_MIN_HEIGHT;
-	fsize->stepwise.max_height = VIMC_FRAME_MAX_HEIGHT;
-	fsize->stepwise.step_width = 1;
-	fsize->stepwise.step_height = 1;
-
-	return 0;
-}
-
-static const struct v4l2_file_operations vimc_cap_fops = {
-	.owner		= THIS_MODULE,
-	.open		= v4l2_fh_open,
-	.release	= vb2_fop_release,
-	.read           = vb2_fop_read,
-	.poll		= vb2_fop_poll,
-	.unlocked_ioctl = video_ioctl2,
-	.mmap           = vb2_fop_mmap,
-};
-
-static const struct v4l2_ioctl_ops vimc_cap_ioctl_ops = {
-	.vidioc_querycap = vimc_cap_querycap,
-
-	.vidioc_g_fmt_vid_cap = vimc_cap_g_fmt_vid_cap,
-	.vidioc_s_fmt_vid_cap = vimc_cap_s_fmt_vid_cap,
-	.vidioc_try_fmt_vid_cap = vimc_cap_try_fmt_vid_cap,
-	.vidioc_enum_fmt_vid_cap = vimc_cap_enum_fmt_vid_cap,
-	.vidioc_enum_framesizes = vimc_cap_enum_framesizes,
-
-	.vidioc_reqbufs = vb2_ioctl_reqbufs,
-	.vidioc_create_bufs = vb2_ioctl_create_bufs,
-	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
-	.vidioc_querybuf = vb2_ioctl_querybuf,
-	.vidioc_qbuf = vb2_ioctl_qbuf,
-	.vidioc_dqbuf = vb2_ioctl_dqbuf,
-	.vidioc_expbuf = vb2_ioctl_expbuf,
-	.vidioc_streamon = vb2_ioctl_streamon,
-	.vidioc_streamoff = vb2_ioctl_streamoff,
-};
-
-static void vimc_cap_return_all_buffers(struct vimc_cap_device *vcap,
-					enum vb2_buffer_state state)
-{
-	struct vimc_cap_buffer *vbuf, *node;
-
-	spin_lock(&vcap->qlock);
-
-	list_for_each_entry_safe(vbuf, node, &vcap->buf_list, list) {
-		list_del(&vbuf->list);
-		vb2_buffer_done(&vbuf->vb2.vb2_buf, state);
-	}
-
-	spin_unlock(&vcap->qlock);
-}
-
-static int vimc_cap_start_streaming(struct vb2_queue *vq, unsigned int count)
-{
-	struct vimc_cap_device *vcap = vb2_get_drv_priv(vq);
-	struct media_entity *entity = &vcap->vdev.entity;
-	int ret;
-
-	vcap->sequence = 0;
-
-	/* Start the media pipeline */
-	ret = media_pipeline_start(entity, &vcap->stream.pipe);
-	if (ret) {
-		vimc_cap_return_all_buffers(vcap, VB2_BUF_STATE_QUEUED);
-		return ret;
-	}
-
-	ret = vimc_streamer_s_stream(&vcap->stream, &vcap->ved, 1);
-	if (ret) {
-		media_pipeline_stop(entity);
-		vimc_cap_return_all_buffers(vcap, VB2_BUF_STATE_QUEUED);
-		return ret;
-	}
-
-	return 0;
-}
-
-/*
- * Stop the stream engine. Any remaining buffers in the stream queue are
- * dequeued and passed on to the vb2 framework marked as STATE_ERROR.
- */
-static void vimc_cap_stop_streaming(struct vb2_queue *vq)
-{
-	struct vimc_cap_device *vcap = vb2_get_drv_priv(vq);
-
-	vimc_streamer_s_stream(&vcap->stream, &vcap->ved, 0);
-
-	/* Stop the media pipeline */
-	media_pipeline_stop(&vcap->vdev.entity);
-
-	/* Release all active buffers */
-	vimc_cap_return_all_buffers(vcap, VB2_BUF_STATE_ERROR);
-}
-
-static void vimc_cap_buf_queue(struct vb2_buffer *vb2_buf)
-{
-	struct vimc_cap_device *vcap = vb2_get_drv_priv(vb2_buf->vb2_queue);
-	struct vimc_cap_buffer *buf = container_of(vb2_buf,
-						   struct vimc_cap_buffer,
-						   vb2.vb2_buf);
-
-	spin_lock(&vcap->qlock);
-	list_add_tail(&buf->list, &vcap->buf_list);
-	spin_unlock(&vcap->qlock);
-}
-
-static int vimc_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
-				unsigned int *nplanes, unsigned int sizes[],
-				struct device *alloc_devs[])
-{
-	struct vimc_cap_device *vcap = vb2_get_drv_priv(vq);
-
-	if (*nplanes)
-		return sizes[0] < vcap->format.sizeimage ? -EINVAL : 0;
-	/* We don't support multiplanes for now */
-	*nplanes = 1;
-	sizes[0] = vcap->format.sizeimage;
-
-	return 0;
-}
-
-static int vimc_cap_buffer_prepare(struct vb2_buffer *vb)
-{
-	struct vimc_cap_device *vcap = vb2_get_drv_priv(vb->vb2_queue);
-	unsigned long size = vcap->format.sizeimage;
-
-	if (vb2_plane_size(vb, 0) < size) {
-		dev_err(vcap->ved.dev, "%s: buffer too small (%lu < %lu)\n",
-			vcap->vdev.name, vb2_plane_size(vb, 0), size);
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static const struct vb2_ops vimc_cap_qops = {
-	.start_streaming	= vimc_cap_start_streaming,
-	.stop_streaming		= vimc_cap_stop_streaming,
-	.buf_queue		= vimc_cap_buf_queue,
-	.queue_setup		= vimc_cap_queue_setup,
-	.buf_prepare		= vimc_cap_buffer_prepare,
-	/*
-	 * Since q->lock is set we can use the standard
-	 * vb2_ops_wait_prepare/finish helper functions.
-	 */
-	.wait_prepare		= vb2_ops_wait_prepare,
-	.wait_finish		= vb2_ops_wait_finish,
-};
-
-static const struct media_entity_operations vimc_cap_mops = {
-	.link_validate		= vimc_vdev_link_validate,
-};
-
-void vimc_cap_release(struct vimc_ent_device *ved)
-{
-	struct vimc_cap_device *vcap =
-		container_of(ved, struct vimc_cap_device, ved);
-
-	media_entity_cleanup(vcap->ved.ent);
-	kfree(vcap);
-}
-
-void vimc_cap_unregister(struct vimc_ent_device *ved)
-{
-	struct vimc_cap_device *vcap =
-		container_of(ved, struct vimc_cap_device, ved);
-
-	vb2_queue_release(&vcap->queue);
-	video_unregister_device(&vcap->vdev);
-}
-
-static void *vimc_cap_process_frame(struct vimc_ent_device *ved,
-				    const void *frame)
-{
-	struct vimc_cap_device *vcap = container_of(ved, struct vimc_cap_device,
-						    ved);
-	struct vimc_cap_buffer *vimc_buf;
-	void *vbuf;
-
-	spin_lock(&vcap->qlock);
-
-	/* Get the first entry of the list */
-	vimc_buf = list_first_entry_or_null(&vcap->buf_list,
-					    typeof(*vimc_buf), list);
-	if (!vimc_buf) {
-		spin_unlock(&vcap->qlock);
-		return ERR_PTR(-EAGAIN);
-	}
-
-	/* Remove this entry from the list */
-	list_del(&vimc_buf->list);
-
-	spin_unlock(&vcap->qlock);
-
-	/* Fill the buffer */
-	vimc_buf->vb2.vb2_buf.timestamp = ktime_get_ns();
-	vimc_buf->vb2.sequence = vcap->sequence++;
-	vimc_buf->vb2.field = vcap->format.field;
-
-	vbuf = vb2_plane_vaddr(&vimc_buf->vb2.vb2_buf, 0);
-
-	memcpy(vbuf, frame, vcap->format.sizeimage);
-
-	/* Set it as ready */
-	vb2_set_plane_payload(&vimc_buf->vb2.vb2_buf, 0,
-			      vcap->format.sizeimage);
-	vb2_buffer_done(&vimc_buf->vb2.vb2_buf, VB2_BUF_STATE_DONE);
-	return NULL;
-}
-
-struct vimc_ent_device *vimc_cap_add(struct vimc_device *vimc,
-				     const char *vcfg_name)
-{
-	struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
-	const struct vimc_pix_map *vpix;
-	struct vimc_cap_device *vcap;
-	struct video_device *vdev;
-	struct vb2_queue *q;
-	int ret;
-
-	/* Allocate the vimc_cap_device struct */
-	vcap = kzalloc(sizeof(*vcap), GFP_KERNEL);
-	if (!vcap)
-		return NULL;
-
-	/* Initialize the media entity */
-	vcap->vdev.entity.name = vcfg_name;
-	vcap->vdev.entity.function = MEDIA_ENT_F_IO_V4L;
-	vcap->pad.flags = MEDIA_PAD_FL_SINK;
-	ret = media_entity_pads_init(&vcap->vdev.entity,
-				     1, &vcap->pad);
-	if (ret)
-		goto err_free_vcap;
-
-	/* Initialize the lock */
-	mutex_init(&vcap->lock);
-
-	/* Initialize the vb2 queue */
-	q = &vcap->queue;
-	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_USERPTR;
-	q->drv_priv = vcap;
-	q->buf_struct_size = sizeof(struct vimc_cap_buffer);
-	q->ops = &vimc_cap_qops;
-	q->mem_ops = &vb2_vmalloc_memops;
-	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	q->min_buffers_needed = 2;
-	q->lock = &vcap->lock;
-
-	ret = vb2_queue_init(q);
-	if (ret) {
-		dev_err(vimc->mdev.dev, "%s: vb2 queue init failed (err=%d)\n",
-			vcfg_name, ret);
-		goto err_clean_m_ent;
-	}
-
-	/* Initialize buffer list and its lock */
-	INIT_LIST_HEAD(&vcap->buf_list);
-	spin_lock_init(&vcap->qlock);
-
-	/* Set default frame format */
-	vcap->format = fmt_default;
-	vpix = vimc_pix_map_by_pixelformat(vcap->format.pixelformat);
-	vcap->format.bytesperline = vcap->format.width * vpix->bpp;
-	vcap->format.sizeimage = vcap->format.bytesperline *
-				 vcap->format.height;
-
-	/* Fill the vimc_ent_device struct */
-	vcap->ved.ent = &vcap->vdev.entity;
-	vcap->ved.process_frame = vimc_cap_process_frame;
-	vcap->ved.vdev_get_format = vimc_cap_get_format;
-	vcap->ved.dev = vimc->mdev.dev;
-
-	/* Initialize the video_device struct */
-	vdev = &vcap->vdev;
-	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
-	vdev->entity.ops = &vimc_cap_mops;
-	vdev->release = video_device_release_empty;
-	vdev->fops = &vimc_cap_fops;
-	vdev->ioctl_ops = &vimc_cap_ioctl_ops;
-	vdev->lock = &vcap->lock;
-	vdev->queue = q;
-	vdev->v4l2_dev = v4l2_dev;
-	vdev->vfl_dir = VFL_DIR_RX;
-	strscpy(vdev->name, vcfg_name, sizeof(vdev->name));
-	video_set_drvdata(vdev, &vcap->ved);
-
-	/* Register the video_device with the v4l2 and the media framework */
-	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
-	if (ret) {
-		dev_err(vimc->mdev.dev, "%s: video register failed (err=%d)\n",
-			vcap->vdev.name, ret);
-		goto err_release_queue;
-	}
-
-	return &vcap->ved;
-
-err_release_queue:
-	vb2_queue_release(q);
-err_clean_m_ent:
-	media_entity_cleanup(&vcap->vdev.entity);
-err_free_vcap:
-	kfree(vcap);
-
-	return NULL;
-}