diff options
Diffstat (limited to 'drivers/staging/media/ipu3/ipu3-v4l2.c')
| -rw-r--r-- | drivers/staging/media/ipu3/ipu3-v4l2.c | 1398 |
1 files changed, 1398 insertions, 0 deletions
diff --git a/drivers/staging/media/ipu3/ipu3-v4l2.c b/drivers/staging/media/ipu3/ipu3-v4l2.c new file mode 100644 index 000000000..e530767e8 --- /dev/null +++ b/drivers/staging/media/ipu3/ipu3-v4l2.c @@ -0,0 +1,1398 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Intel Corporation + +#include <linux/module.h> +#include <linux/pm_runtime.h> + +#include <media/v4l2-event.h> +#include <media/v4l2-ioctl.h> + +#include "ipu3.h" +#include "ipu3-dmamap.h" + +/******************** v4l2_subdev_ops ********************/ + +#define IPU3_RUNNING_MODE_VIDEO 0 +#define IPU3_RUNNING_MODE_STILL 1 + +static int imgu_subdev_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct imgu_v4l2_subdev *imgu_sd = container_of(sd, + struct imgu_v4l2_subdev, + subdev); + struct imgu_device *imgu = v4l2_get_subdevdata(sd); + struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[imgu_sd->pipe]; + struct v4l2_rect try_crop = { + .top = 0, + .left = 0, + }; + unsigned int i; + + try_crop.width = + imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.width; + try_crop.height = + imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.height; + + /* Initialize try_fmt */ + for (i = 0; i < IMGU_NODE_NUM; i++) { + struct v4l2_mbus_framefmt *try_fmt = + v4l2_subdev_get_try_format(sd, fh->state, i); + + try_fmt->width = try_crop.width; + try_fmt->height = try_crop.height; + try_fmt->code = imgu_pipe->nodes[i].pad_fmt.code; + try_fmt->field = V4L2_FIELD_NONE; + } + + *v4l2_subdev_get_try_crop(sd, fh->state, IMGU_NODE_IN) = try_crop; + *v4l2_subdev_get_try_compose(sd, fh->state, IMGU_NODE_IN) = try_crop; + + return 0; +} + +static int imgu_subdev_s_stream(struct v4l2_subdev *sd, int enable) +{ + int i; + unsigned int node; + int r = 0; + struct imgu_device *imgu = v4l2_get_subdevdata(sd); + struct imgu_v4l2_subdev *imgu_sd = container_of(sd, + struct imgu_v4l2_subdev, + subdev); + unsigned int pipe = imgu_sd->pipe; + struct device *dev = &imgu->pci_dev->dev; + struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL }; + struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL }; + struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe]; + struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe]; + + dev_dbg(dev, "%s %d for pipe %u", __func__, enable, pipe); + /* grab ctrl after streamon and return after off */ + v4l2_ctrl_grab(imgu_sd->ctrl, enable); + + if (!enable) { + imgu_sd->active = false; + return 0; + } + + for (i = 0; i < IMGU_NODE_NUM; i++) + imgu_pipe->queue_enabled[i] = imgu_pipe->nodes[i].enabled; + + /* This is handled specially */ + imgu_pipe->queue_enabled[IPU3_CSS_QUEUE_PARAMS] = false; + + /* Initialize CSS formats */ + for (i = 0; i < IPU3_CSS_QUEUES; i++) { + node = imgu_map_node(imgu, i); + /* No need to reconfig meta nodes */ + if (node == IMGU_NODE_STAT_3A || node == IMGU_NODE_PARAMS) + continue; + fmts[i] = imgu_pipe->queue_enabled[node] ? + &imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp : NULL; + } + + /* Enable VF output only when VF queue requested by user */ + css_pipe->vf_output_en = false; + if (imgu_pipe->nodes[IMGU_NODE_VF].enabled) + css_pipe->vf_output_en = true; + + if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO) + css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO; + else + css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE; + + dev_dbg(dev, "IPU3 pipe %u pipe_id %u", pipe, css_pipe->pipe_id); + + rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff; + rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds; + rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc; + + r = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe); + if (r) { + dev_err(dev, "failed to set initial formats pipe %u with (%d)", + pipe, r); + return r; + } + + imgu_sd->active = true; + + return 0; +} + +static int imgu_subdev_get_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct imgu_device *imgu = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *mf; + struct imgu_media_pipe *imgu_pipe; + u32 pad = fmt->pad; + struct imgu_v4l2_subdev *imgu_sd = container_of(sd, + struct imgu_v4l2_subdev, + subdev); + unsigned int pipe = imgu_sd->pipe; + + imgu_pipe = &imgu->imgu_pipe[pipe]; + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + fmt->format = imgu_pipe->nodes[pad].pad_fmt; + } else { + mf = v4l2_subdev_get_try_format(sd, sd_state, pad); + fmt->format = *mf; + } + + return 0; +} + +static int imgu_subdev_set_fmt(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct imgu_media_pipe *imgu_pipe; + struct imgu_device *imgu = v4l2_get_subdevdata(sd); + struct imgu_v4l2_subdev *imgu_sd = container_of(sd, + struct imgu_v4l2_subdev, + subdev); + struct v4l2_mbus_framefmt *mf; + u32 pad = fmt->pad; + unsigned int pipe = imgu_sd->pipe; + + dev_dbg(&imgu->pci_dev->dev, "set subdev %u pad %u fmt to [%ux%u]", + pipe, pad, fmt->format.width, fmt->format.height); + + imgu_pipe = &imgu->imgu_pipe[pipe]; + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) + mf = v4l2_subdev_get_try_format(sd, sd_state, pad); + else + mf = &imgu_pipe->nodes[pad].pad_fmt; + + fmt->format.code = mf->code; + /* Clamp the w and h based on the hardware capabilities */ + if (imgu_sd->subdev_pads[pad].flags & MEDIA_PAD_FL_SOURCE) { + fmt->format.width = clamp(fmt->format.width, + IPU3_OUTPUT_MIN_WIDTH, + IPU3_OUTPUT_MAX_WIDTH); + fmt->format.height = clamp(fmt->format.height, + IPU3_OUTPUT_MIN_HEIGHT, + IPU3_OUTPUT_MAX_HEIGHT); + } else { + fmt->format.width = clamp(fmt->format.width, + IPU3_INPUT_MIN_WIDTH, + IPU3_INPUT_MAX_WIDTH); + fmt->format.height = clamp(fmt->format.height, + IPU3_INPUT_MIN_HEIGHT, + IPU3_INPUT_MAX_HEIGHT); + } + + *mf = fmt->format; + + return 0; +} + +static struct v4l2_rect * +imgu_subdev_get_crop(struct imgu_v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, unsigned int pad, + enum v4l2_subdev_format_whence which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_crop(&sd->subdev, sd_state, pad); + else + return &sd->rect.eff; +} + +static struct v4l2_rect * +imgu_subdev_get_compose(struct imgu_v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, unsigned int pad, + enum v4l2_subdev_format_whence which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_compose(&sd->subdev, sd_state, pad); + else + return &sd->rect.bds; +} + +static int imgu_subdev_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + struct imgu_v4l2_subdev *imgu_sd = + container_of(sd, struct imgu_v4l2_subdev, subdev); + + if (sel->pad != IMGU_NODE_IN) + return -EINVAL; + + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + sel->r = *imgu_subdev_get_crop(imgu_sd, sd_state, sel->pad, + sel->which); + return 0; + case V4L2_SEL_TGT_COMPOSE: + sel->r = *imgu_subdev_get_compose(imgu_sd, sd_state, sel->pad, + sel->which); + return 0; + default: + return -EINVAL; + } +} + +static int imgu_subdev_set_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + struct imgu_device *imgu = v4l2_get_subdevdata(sd); + struct imgu_v4l2_subdev *imgu_sd = + container_of(sd, struct imgu_v4l2_subdev, subdev); + struct v4l2_rect *rect; + + dev_dbg(&imgu->pci_dev->dev, + "set subdev %u sel which %u target 0x%4x rect [%ux%u]", + imgu_sd->pipe, sel->which, sel->target, + sel->r.width, sel->r.height); + + if (sel->pad != IMGU_NODE_IN) + return -EINVAL; + + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + rect = imgu_subdev_get_crop(imgu_sd, sd_state, sel->pad, + sel->which); + break; + case V4L2_SEL_TGT_COMPOSE: + rect = imgu_subdev_get_compose(imgu_sd, sd_state, sel->pad, + sel->which); + break; + default: + return -EINVAL; + } + + *rect = sel->r; + return 0; +} + +/******************** media_entity_operations ********************/ + +static int imgu_link_setup(struct media_entity *entity, + const struct media_pad *local, + const struct media_pad *remote, u32 flags) +{ + struct imgu_media_pipe *imgu_pipe; + struct v4l2_subdev *sd = container_of(entity, struct v4l2_subdev, + entity); + struct imgu_device *imgu = v4l2_get_subdevdata(sd); + struct imgu_v4l2_subdev *imgu_sd = container_of(sd, + struct imgu_v4l2_subdev, + subdev); + unsigned int pipe = imgu_sd->pipe; + u32 pad = local->index; + + WARN_ON(pad >= IMGU_NODE_NUM); + + dev_dbg(&imgu->pci_dev->dev, "pipe %u pad %u is %s", pipe, pad, + flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled"); + + imgu_pipe = &imgu->imgu_pipe[pipe]; + imgu_pipe->nodes[pad].enabled = flags & MEDIA_LNK_FL_ENABLED; + + /* enable input node to enable the pipe */ + if (pad != IMGU_NODE_IN) + return 0; + + if (flags & MEDIA_LNK_FL_ENABLED) + __set_bit(pipe, imgu->css.enabled_pipes); + else + __clear_bit(pipe, imgu->css.enabled_pipes); + + dev_dbg(&imgu->pci_dev->dev, "pipe %u is %s", pipe, + flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled"); + + return 0; +} + +/******************** vb2_ops ********************/ + +static int imgu_vb2_buf_init(struct vb2_buffer *vb) +{ + struct sg_table *sg = vb2_dma_sg_plane_desc(vb, 0); + struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue); + struct imgu_buffer *buf = container_of(vb, + struct imgu_buffer, vid_buf.vbb.vb2_buf); + struct imgu_video_device *node = + container_of(vb->vb2_queue, struct imgu_video_device, vbq); + unsigned int queue = imgu_node_to_queue(node->id); + + if (queue == IPU3_CSS_QUEUE_PARAMS) + return 0; + + return imgu_dmamap_map_sg(imgu, sg->sgl, sg->nents, &buf->map); +} + +/* Called when each buffer is freed */ +static void imgu_vb2_buf_cleanup(struct vb2_buffer *vb) +{ + struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue); + struct imgu_buffer *buf = container_of(vb, + struct imgu_buffer, vid_buf.vbb.vb2_buf); + struct imgu_video_device *node = + container_of(vb->vb2_queue, struct imgu_video_device, vbq); + unsigned int queue = imgu_node_to_queue(node->id); + + if (queue == IPU3_CSS_QUEUE_PARAMS) + return; + + imgu_dmamap_unmap(imgu, &buf->map); +} + +/* Transfer buffer ownership to me */ +static void imgu_vb2_buf_queue(struct vb2_buffer *vb) +{ + struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue); + struct imgu_video_device *node = + container_of(vb->vb2_queue, struct imgu_video_device, vbq); + unsigned int queue = imgu_node_to_queue(node->id); + struct imgu_buffer *buf = container_of(vb, struct imgu_buffer, + vid_buf.vbb.vb2_buf); + unsigned long need_bytes; + unsigned long payload = vb2_get_plane_payload(vb, 0); + + if (vb->vb2_queue->type == V4L2_BUF_TYPE_META_CAPTURE || + vb->vb2_queue->type == V4L2_BUF_TYPE_META_OUTPUT) + need_bytes = node->vdev_fmt.fmt.meta.buffersize; + else + need_bytes = node->vdev_fmt.fmt.pix_mp.plane_fmt[0].sizeimage; + + if (queue == IPU3_CSS_QUEUE_PARAMS && payload && payload < need_bytes) { + dev_err(&imgu->pci_dev->dev, "invalid data size for params."); + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); + return; + } + + mutex_lock(&imgu->lock); + if (queue != IPU3_CSS_QUEUE_PARAMS) + imgu_css_buf_init(&buf->css_buf, queue, buf->map.daddr); + + list_add_tail(&buf->vid_buf.list, &node->buffers); + mutex_unlock(&imgu->lock); + + vb2_set_plane_payload(vb, 0, need_bytes); + + mutex_lock(&imgu->streaming_lock); + if (imgu->streaming) + imgu_queue_buffers(imgu, false, node->pipe); + mutex_unlock(&imgu->streaming_lock); + + dev_dbg(&imgu->pci_dev->dev, "%s for pipe %u node %u", __func__, + node->pipe, node->id); +} + +static int imgu_vb2_queue_setup(struct vb2_queue *vq, + unsigned int *num_buffers, + unsigned int *num_planes, + unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct imgu_device *imgu = vb2_get_drv_priv(vq); + struct imgu_video_device *node = + container_of(vq, struct imgu_video_device, vbq); + const struct v4l2_format *fmt = &node->vdev_fmt; + unsigned int size; + + *num_buffers = clamp_val(*num_buffers, 1, VB2_MAX_FRAME); + alloc_devs[0] = &imgu->pci_dev->dev; + + if (vq->type == V4L2_BUF_TYPE_META_CAPTURE || + vq->type == V4L2_BUF_TYPE_META_OUTPUT) + size = fmt->fmt.meta.buffersize; + else + size = fmt->fmt.pix_mp.plane_fmt[0].sizeimage; + + if (*num_planes) { + if (sizes[0] < size) + return -EINVAL; + size = sizes[0]; + } + + *num_planes = 1; + sizes[0] = size; + + /* Initialize buffer queue */ + INIT_LIST_HEAD(&node->buffers); + + return 0; +} + +/* Check if all enabled video nodes are streaming, exception ignored */ +static bool imgu_all_nodes_streaming(struct imgu_device *imgu, + struct imgu_video_device *except) +{ + unsigned int i, pipe, p; + struct imgu_video_device *node; + struct device *dev = &imgu->pci_dev->dev; + + pipe = except->pipe; + if (!test_bit(pipe, imgu->css.enabled_pipes)) { + dev_warn(&imgu->pci_dev->dev, + "pipe %u link is not ready yet", pipe); + return false; + } + + for_each_set_bit(p, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) { + for (i = 0; i < IMGU_NODE_NUM; i++) { + node = &imgu->imgu_pipe[p].nodes[i]; + dev_dbg(dev, "%s pipe %u queue %u name %s enabled = %u", + __func__, p, i, node->name, node->enabled); + if (node == except) + continue; + if (node->enabled && !vb2_start_streaming_called(&node->vbq)) + return false; + } + } + + return true; +} + +static void imgu_return_all_buffers(struct imgu_device *imgu, + struct imgu_video_device *node, + enum vb2_buffer_state state) +{ + struct imgu_vb2_buffer *b, *b0; + + /* Return all buffers */ + mutex_lock(&imgu->lock); + list_for_each_entry_safe(b, b0, &node->buffers, list) { + list_del(&b->list); + vb2_buffer_done(&b->vbb.vb2_buf, state); + } + mutex_unlock(&imgu->lock); +} + +static int imgu_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct imgu_media_pipe *imgu_pipe; + struct imgu_device *imgu = vb2_get_drv_priv(vq); + struct device *dev = &imgu->pci_dev->dev; + struct imgu_video_device *node = + container_of(vq, struct imgu_video_device, vbq); + int r; + unsigned int pipe; + + dev_dbg(dev, "%s node name %s pipe %u id %u", __func__, + node->name, node->pipe, node->id); + + mutex_lock(&imgu->streaming_lock); + if (imgu->streaming) { + r = -EBUSY; + mutex_unlock(&imgu->streaming_lock); + goto fail_return_bufs; + } + mutex_unlock(&imgu->streaming_lock); + + if (!node->enabled) { + dev_err(dev, "IMGU node is not enabled"); + r = -EINVAL; + goto fail_return_bufs; + } + + pipe = node->pipe; + imgu_pipe = &imgu->imgu_pipe[pipe]; + atomic_set(&node->sequence, 0); + r = video_device_pipeline_start(&node->vdev, &imgu_pipe->pipeline); + if (r < 0) + goto fail_return_bufs; + + if (!imgu_all_nodes_streaming(imgu, node)) + return 0; + + for_each_set_bit(pipe, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) { + r = v4l2_subdev_call(&imgu->imgu_pipe[pipe].imgu_sd.subdev, + video, s_stream, 1); + if (r < 0) + goto fail_stop_pipeline; + } + + /* Start streaming of the whole pipeline now */ + dev_dbg(dev, "IMGU streaming is ready to start"); + mutex_lock(&imgu->streaming_lock); + r = imgu_s_stream(imgu, true); + if (!r) + imgu->streaming = true; + mutex_unlock(&imgu->streaming_lock); + + return 0; + +fail_stop_pipeline: + video_device_pipeline_stop(&node->vdev); +fail_return_bufs: + imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_QUEUED); + + return r; +} + +static void imgu_vb2_stop_streaming(struct vb2_queue *vq) +{ + struct imgu_media_pipe *imgu_pipe; + struct imgu_device *imgu = vb2_get_drv_priv(vq); + struct device *dev = &imgu->pci_dev->dev; + struct imgu_video_device *node = + container_of(vq, struct imgu_video_device, vbq); + int r; + unsigned int pipe; + + WARN_ON(!node->enabled); + + pipe = node->pipe; + dev_dbg(dev, "Try to stream off node [%u][%u]", pipe, node->id); + imgu_pipe = &imgu->imgu_pipe[pipe]; + r = v4l2_subdev_call(&imgu_pipe->imgu_sd.subdev, video, s_stream, 0); + if (r) + dev_err(&imgu->pci_dev->dev, + "failed to stop subdev streaming\n"); + + mutex_lock(&imgu->streaming_lock); + /* Was this the first node with streaming disabled? */ + if (imgu->streaming && imgu_all_nodes_streaming(imgu, node)) { + /* Yes, really stop streaming now */ + dev_dbg(dev, "IMGU streaming is ready to stop"); + r = imgu_s_stream(imgu, false); + if (!r) + imgu->streaming = false; + } + + imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_ERROR); + mutex_unlock(&imgu->streaming_lock); + + video_device_pipeline_stop(&node->vdev); +} + +/******************** v4l2_ioctl_ops ********************/ + +#define VID_CAPTURE 0 +#define VID_OUTPUT 1 +#define DEF_VID_CAPTURE 0 +#define DEF_VID_OUTPUT 1 + +struct imgu_fmt { + u32 fourcc; + u16 type; /* VID_CAPTURE or VID_OUTPUT not both */ +}; + +/* format descriptions for capture and preview */ +static const struct imgu_fmt formats[] = { + { V4L2_PIX_FMT_NV12, VID_CAPTURE }, + { V4L2_PIX_FMT_IPU3_SGRBG10, VID_OUTPUT }, + { V4L2_PIX_FMT_IPU3_SBGGR10, VID_OUTPUT }, + { V4L2_PIX_FMT_IPU3_SGBRG10, VID_OUTPUT }, + { V4L2_PIX_FMT_IPU3_SRGGB10, VID_OUTPUT }, +}; + +/* Find the first matched format, return default if not found */ +static const struct imgu_fmt *find_format(struct v4l2_format *f, u32 type) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(formats); i++) { + if (formats[i].fourcc == f->fmt.pix_mp.pixelformat && + formats[i].type == type) + return &formats[i]; + } + + return type == VID_CAPTURE ? &formats[DEF_VID_CAPTURE] : + &formats[DEF_VID_OUTPUT]; +} + +static int imgu_vidioc_querycap(struct file *file, void *fh, + struct v4l2_capability *cap) +{ + struct imgu_device *imgu = video_drvdata(file); + + strscpy(cap->driver, IMGU_NAME, sizeof(cap->driver)); + strscpy(cap->card, IMGU_NAME, sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", + pci_name(imgu->pci_dev)); + + return 0; +} + +static int enum_fmts(struct v4l2_fmtdesc *f, u32 type) +{ + unsigned int i, j; + + if (f->mbus_code != 0 && f->mbus_code != MEDIA_BUS_FMT_FIXED) + return -EINVAL; + + for (i = j = 0; i < ARRAY_SIZE(formats); ++i) { + if (formats[i].type == type) { + if (j == f->index) + break; + ++j; + } + } + + if (i < ARRAY_SIZE(formats)) { + f->pixelformat = formats[i].fourcc; + return 0; + } + + return -EINVAL; +} + +static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + return -EINVAL; + + return enum_fmts(f, VID_CAPTURE); +} + +static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + return -EINVAL; + + return enum_fmts(f, VID_OUTPUT); +} + +/* Propagate forward always the format from the CIO2 subdev */ +static int imgu_vidioc_g_fmt(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct imgu_video_device *node = file_to_intel_imgu_node(file); + + f->fmt = node->vdev_fmt.fmt; + + return 0; +} + +/* + * Set input/output format. Unless it is just a try, this also resets + * selections (ie. effective and BDS resolutions) to defaults. + */ +static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node, + struct v4l2_format *f, bool try) +{ + struct device *dev = &imgu->pci_dev->dev; + struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL }; + struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL }; + struct v4l2_mbus_framefmt pad_fmt; + unsigned int i, css_q; + int ret; + struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe]; + struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe]; + struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd; + + dev_dbg(dev, "set fmt node [%u][%u](try = %u)", pipe, node, try); + + for (i = 0; i < IMGU_NODE_NUM; i++) + dev_dbg(dev, "IMGU pipe %u node %u enabled = %u", + pipe, i, imgu_pipe->nodes[i].enabled); + + if (imgu_pipe->nodes[IMGU_NODE_VF].enabled) + css_pipe->vf_output_en = true; + + if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO) + css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO; + else + css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE; + + dev_dbg(dev, "IPU3 pipe %u pipe_id = %u", pipe, css_pipe->pipe_id); + + css_q = imgu_node_to_queue(node); + for (i = 0; i < IPU3_CSS_QUEUES; i++) { + unsigned int inode = imgu_map_node(imgu, i); + + /* Skip the meta node */ + if (inode == IMGU_NODE_STAT_3A || inode == IMGU_NODE_PARAMS) + continue; + + /* CSS expects some format on OUT queue */ + if (i != IPU3_CSS_QUEUE_OUT && + !imgu_pipe->nodes[inode].enabled && !try) { + fmts[i] = NULL; + continue; + } + + if (i == css_q) { + fmts[i] = &f->fmt.pix_mp; + continue; + } + + if (try) { + fmts[i] = kmemdup(&imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp, + sizeof(struct v4l2_pix_format_mplane), + GFP_KERNEL); + if (!fmts[i]) { + ret = -ENOMEM; + goto out; + } + } else { + fmts[i] = &imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp; + } + + } + + if (!try) { + /* eff and bds res got by imgu_s_sel */ + struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd; + + rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff; + rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds; + rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc; + + /* suppose that pad fmt was set by subdev s_fmt before */ + pad_fmt = imgu_pipe->nodes[IMGU_NODE_IN].pad_fmt; + rects[IPU3_CSS_RECT_GDC]->width = pad_fmt.width; + rects[IPU3_CSS_RECT_GDC]->height = pad_fmt.height; + } + + if (!fmts[css_q]) { + ret = -EINVAL; + goto out; + } + + if (try) + ret = imgu_css_fmt_try(&imgu->css, fmts, rects, pipe); + else + ret = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe); + + /* ret is the binary number in the firmware blob */ + if (ret < 0) + goto out; + + /* + * imgu doesn't set the node to the value given by user + * before we return success from this function, so set it here. + */ + if (!try) + imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp = f->fmt.pix_mp; + +out: + if (try) { + for (i = 0; i < IPU3_CSS_QUEUES; i++) + if (i != css_q) + kfree(fmts[i]); + } + + return ret; +} + +static int imgu_try_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; + const struct imgu_fmt *fmt; + + if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + fmt = find_format(f, VID_CAPTURE); + else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) + fmt = find_format(f, VID_OUTPUT); + else + return -EINVAL; + + pixm->pixelformat = fmt->fourcc; + + return 0; +} + +static int imgu_vidioc_try_fmt(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct imgu_device *imgu = video_drvdata(file); + struct device *dev = &imgu->pci_dev->dev; + struct imgu_video_device *node = file_to_intel_imgu_node(file); + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + int r; + + dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__, + pix_mp->width, pix_mp->height, node->id); + + r = imgu_try_fmt(file, fh, f); + if (r) + return r; + + return imgu_fmt(imgu, node->pipe, node->id, f, true); +} + +static int imgu_vidioc_s_fmt(struct file *file, void *fh, struct v4l2_format *f) +{ + struct imgu_device *imgu = video_drvdata(file); + struct device *dev = &imgu->pci_dev->dev; + struct imgu_video_device *node = file_to_intel_imgu_node(file); + struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp; + int r; + + dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__, + pix_mp->width, pix_mp->height, node->id); + + r = imgu_try_fmt(file, fh, f); + if (r) + return r; + + return imgu_fmt(imgu, node->pipe, node->id, f, false); +} + +struct imgu_meta_fmt { + __u32 fourcc; + char *name; +}; + +/* From drivers/media/v4l2-core/v4l2-ioctl.c */ +static const struct imgu_meta_fmt meta_fmts[] = { + { V4L2_META_FMT_IPU3_PARAMS, "IPU3 processing parameters" }, + { V4L2_META_FMT_IPU3_STAT_3A, "IPU3 3A statistics" }, +}; + +static int imgu_meta_enum_format(struct file *file, void *fh, + struct v4l2_fmtdesc *fmt) +{ + struct imgu_video_device *node = file_to_intel_imgu_node(file); + unsigned int i = fmt->type == V4L2_BUF_TYPE_META_OUTPUT ? 0 : 1; + + /* Each node is dedicated to only one meta format */ + if (fmt->index > 0 || fmt->type != node->vbq.type) + return -EINVAL; + + if (fmt->mbus_code != 0 && fmt->mbus_code != MEDIA_BUS_FMT_FIXED) + return -EINVAL; + + strscpy(fmt->description, meta_fmts[i].name, sizeof(fmt->description)); + fmt->pixelformat = meta_fmts[i].fourcc; + + return 0; +} + +static int imgu_vidioc_g_meta_fmt(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct imgu_video_device *node = file_to_intel_imgu_node(file); + + if (f->type != node->vbq.type) + return -EINVAL; + + f->fmt = node->vdev_fmt.fmt; + + return 0; +} + +/******************** function pointers ********************/ + +static const struct v4l2_subdev_internal_ops imgu_subdev_internal_ops = { + .open = imgu_subdev_open, +}; + +static const struct v4l2_subdev_core_ops imgu_subdev_core_ops = { + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +}; + +static const struct v4l2_subdev_video_ops imgu_subdev_video_ops = { + .s_stream = imgu_subdev_s_stream, +}; + +static const struct v4l2_subdev_pad_ops imgu_subdev_pad_ops = { + .link_validate = v4l2_subdev_link_validate_default, + .get_fmt = imgu_subdev_get_fmt, + .set_fmt = imgu_subdev_set_fmt, + .get_selection = imgu_subdev_get_selection, + .set_selection = imgu_subdev_set_selection, +}; + +static const struct v4l2_subdev_ops imgu_subdev_ops = { + .core = &imgu_subdev_core_ops, + .video = &imgu_subdev_video_ops, + .pad = &imgu_subdev_pad_ops, +}; + +static const struct media_entity_operations imgu_media_ops = { + .link_setup = imgu_link_setup, + .link_validate = v4l2_subdev_link_validate, +}; + +/****************** vb2_ops of the Q ********************/ + +static const struct vb2_ops imgu_vb2_ops = { + .buf_init = imgu_vb2_buf_init, + .buf_cleanup = imgu_vb2_buf_cleanup, + .buf_queue = imgu_vb2_buf_queue, + .queue_setup = imgu_vb2_queue_setup, + .start_streaming = imgu_vb2_start_streaming, + .stop_streaming = imgu_vb2_stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +/****************** v4l2_file_operations *****************/ + +static const struct v4l2_file_operations imgu_v4l2_fops = { + .unlocked_ioctl = video_ioctl2, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, +}; + +/******************** v4l2_ioctl_ops ********************/ + +static const struct v4l2_ioctl_ops imgu_v4l2_ioctl_ops = { + .vidioc_querycap = imgu_vidioc_querycap, + + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap_mplane = imgu_vidioc_g_fmt, + .vidioc_s_fmt_vid_cap_mplane = imgu_vidioc_s_fmt, + .vidioc_try_fmt_vid_cap_mplane = imgu_vidioc_try_fmt, + + .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, + .vidioc_g_fmt_vid_out_mplane = imgu_vidioc_g_fmt, + .vidioc_s_fmt_vid_out_mplane = imgu_vidioc_s_fmt, + .vidioc_try_fmt_vid_out_mplane = imgu_vidioc_try_fmt, + + /* buffer queue management */ + .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_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_expbuf = vb2_ioctl_expbuf, +}; + +static const struct v4l2_ioctl_ops imgu_v4l2_meta_ioctl_ops = { + .vidioc_querycap = imgu_vidioc_querycap, + + /* meta capture */ + .vidioc_enum_fmt_meta_cap = imgu_meta_enum_format, + .vidioc_g_fmt_meta_cap = imgu_vidioc_g_meta_fmt, + .vidioc_s_fmt_meta_cap = imgu_vidioc_g_meta_fmt, + .vidioc_try_fmt_meta_cap = imgu_vidioc_g_meta_fmt, + + /* meta output */ + .vidioc_enum_fmt_meta_out = imgu_meta_enum_format, + .vidioc_g_fmt_meta_out = imgu_vidioc_g_meta_fmt, + .vidioc_s_fmt_meta_out = imgu_vidioc_g_meta_fmt, + .vidioc_try_fmt_meta_out = imgu_vidioc_g_meta_fmt, + + .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_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_expbuf = vb2_ioctl_expbuf, +}; + +static int imgu_sd_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct imgu_v4l2_subdev *imgu_sd = + container_of(ctrl->handler, struct imgu_v4l2_subdev, ctrl_handler); + struct imgu_device *imgu = v4l2_get_subdevdata(&imgu_sd->subdev); + struct device *dev = &imgu->pci_dev->dev; + + dev_dbg(dev, "set val %d to ctrl 0x%8x for subdev %u", + ctrl->val, ctrl->id, imgu_sd->pipe); + + switch (ctrl->id) { + case V4L2_CID_INTEL_IPU3_MODE: + atomic_set(&imgu_sd->running_mode, ctrl->val); + return 0; + default: + return -EINVAL; + } +} + +static const struct v4l2_ctrl_ops imgu_subdev_ctrl_ops = { + .s_ctrl = imgu_sd_s_ctrl, +}; + +static const char * const imgu_ctrl_mode_strings[] = { + "Video mode", + "Still mode", +}; + +static const struct v4l2_ctrl_config imgu_subdev_ctrl_mode = { + .ops = &imgu_subdev_ctrl_ops, + .id = V4L2_CID_INTEL_IPU3_MODE, + .name = "IPU3 Pipe Mode", + .type = V4L2_CTRL_TYPE_MENU, + .max = ARRAY_SIZE(imgu_ctrl_mode_strings) - 1, + .def = IPU3_RUNNING_MODE_VIDEO, + .qmenu = imgu_ctrl_mode_strings, +}; + +/******************** Framework registration ********************/ + +/* helper function to config node's video properties */ +static void imgu_node_to_v4l2(u32 node, struct video_device *vdev, + struct v4l2_format *f) +{ + u32 cap; + + /* Should not happen */ + WARN_ON(node >= IMGU_NODE_NUM); + + switch (node) { + case IMGU_NODE_IN: + cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE; + f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; + vdev->ioctl_ops = &imgu_v4l2_ioctl_ops; + break; + case IMGU_NODE_PARAMS: + cap = V4L2_CAP_META_OUTPUT; + f->type = V4L2_BUF_TYPE_META_OUTPUT; + f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_PARAMS; + vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops; + imgu_css_meta_fmt_set(&f->fmt.meta); + break; + case IMGU_NODE_STAT_3A: + cap = V4L2_CAP_META_CAPTURE; + f->type = V4L2_BUF_TYPE_META_CAPTURE; + f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_STAT_3A; + vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops; + imgu_css_meta_fmt_set(&f->fmt.meta); + break; + default: + cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE; + f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; + vdev->ioctl_ops = &imgu_v4l2_ioctl_ops; + } + + vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_IO_MC | cap; +} + +static int imgu_v4l2_subdev_register(struct imgu_device *imgu, + struct imgu_v4l2_subdev *imgu_sd, + unsigned int pipe) +{ + int i, r; + struct v4l2_ctrl_handler *hdl = &imgu_sd->ctrl_handler; + struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe]; + + /* Initialize subdev media entity */ + r = media_entity_pads_init(&imgu_sd->subdev.entity, IMGU_NODE_NUM, + imgu_sd->subdev_pads); + if (r) { + dev_err(&imgu->pci_dev->dev, + "failed initialize subdev media entity (%d)\n", r); + return r; + } + imgu_sd->subdev.entity.ops = &imgu_media_ops; + for (i = 0; i < IMGU_NODE_NUM; i++) { + imgu_sd->subdev_pads[i].flags = imgu_pipe->nodes[i].output ? + MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE; + } + + /* Initialize subdev */ + v4l2_subdev_init(&imgu_sd->subdev, &imgu_subdev_ops); + imgu_sd->subdev.entity.function = MEDIA_ENT_F_PROC_VIDEO_STATISTICS; + imgu_sd->subdev.internal_ops = &imgu_subdev_internal_ops; + imgu_sd->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE | + V4L2_SUBDEV_FL_HAS_EVENTS; + snprintf(imgu_sd->subdev.name, sizeof(imgu_sd->subdev.name), + "%s %u", IMGU_NAME, pipe); + v4l2_set_subdevdata(&imgu_sd->subdev, imgu); + atomic_set(&imgu_sd->running_mode, IPU3_RUNNING_MODE_VIDEO); + v4l2_ctrl_handler_init(hdl, 1); + imgu_sd->subdev.ctrl_handler = hdl; + imgu_sd->ctrl = v4l2_ctrl_new_custom(hdl, &imgu_subdev_ctrl_mode, NULL); + if (hdl->error) { + r = hdl->error; + dev_err(&imgu->pci_dev->dev, + "failed to create subdev v4l2 ctrl with err %d", r); + goto fail_subdev; + } + r = v4l2_device_register_subdev(&imgu->v4l2_dev, &imgu_sd->subdev); + if (r) { + dev_err(&imgu->pci_dev->dev, + "failed initialize subdev (%d)\n", r); + goto fail_subdev; + } + + imgu_sd->pipe = pipe; + return 0; + +fail_subdev: + v4l2_ctrl_handler_free(imgu_sd->subdev.ctrl_handler); + media_entity_cleanup(&imgu_sd->subdev.entity); + + return r; +} + +static int imgu_v4l2_node_setup(struct imgu_device *imgu, unsigned int pipe, + int node_num) +{ + int r; + u32 flags; + struct v4l2_mbus_framefmt def_bus_fmt = { 0 }; + struct v4l2_pix_format_mplane def_pix_fmt = { 0 }; + struct device *dev = &imgu->pci_dev->dev; + struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe]; + struct v4l2_subdev *sd = &imgu_pipe->imgu_sd.subdev; + struct imgu_video_device *node = &imgu_pipe->nodes[node_num]; + struct video_device *vdev = &node->vdev; + struct vb2_queue *vbq = &node->vbq; + + /* Initialize formats to default values */ + def_bus_fmt.width = 1920; + def_bus_fmt.height = 1080; + def_bus_fmt.code = MEDIA_BUS_FMT_FIXED; + def_bus_fmt.field = V4L2_FIELD_NONE; + def_bus_fmt.colorspace = V4L2_COLORSPACE_RAW; + def_bus_fmt.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + def_bus_fmt.quantization = V4L2_QUANTIZATION_DEFAULT; + def_bus_fmt.xfer_func = V4L2_XFER_FUNC_DEFAULT; + + def_pix_fmt.width = def_bus_fmt.width; + def_pix_fmt.height = def_bus_fmt.height; + def_pix_fmt.field = def_bus_fmt.field; + def_pix_fmt.num_planes = 1; + def_pix_fmt.plane_fmt[0].bytesperline = + imgu_bytesperline(def_pix_fmt.width, + IMGU_ABI_FRAME_FORMAT_RAW_PACKED); + def_pix_fmt.plane_fmt[0].sizeimage = + def_pix_fmt.height * def_pix_fmt.plane_fmt[0].bytesperline; + def_pix_fmt.flags = 0; + def_pix_fmt.colorspace = def_bus_fmt.colorspace; + def_pix_fmt.ycbcr_enc = def_bus_fmt.ycbcr_enc; + def_pix_fmt.quantization = def_bus_fmt.quantization; + def_pix_fmt.xfer_func = def_bus_fmt.xfer_func; + + /* Initialize miscellaneous variables */ + mutex_init(&node->lock); + INIT_LIST_HEAD(&node->buffers); + + /* Initialize formats to default values */ + node->pad_fmt = def_bus_fmt; + node->id = node_num; + node->pipe = pipe; + imgu_node_to_v4l2(node_num, vdev, &node->vdev_fmt); + if (node->vdev_fmt.type == + V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE || + node->vdev_fmt.type == + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { + def_pix_fmt.pixelformat = node->output ? + V4L2_PIX_FMT_IPU3_SGRBG10 : + V4L2_PIX_FMT_NV12; + node->vdev_fmt.fmt.pix_mp = def_pix_fmt; + } + + /* Initialize media entities */ + r = media_entity_pads_init(&vdev->entity, 1, &node->vdev_pad); + if (r) { + dev_err(dev, "failed initialize media entity (%d)\n", r); + mutex_destroy(&node->lock); + return r; + } + node->vdev_pad.flags = node->output ? + MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK; + vdev->entity.ops = NULL; + + /* Initialize vbq */ + vbq->type = node->vdev_fmt.type; + vbq->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF; + vbq->ops = &imgu_vb2_ops; + vbq->mem_ops = &vb2_dma_sg_memops; + if (imgu->buf_struct_size <= 0) + imgu->buf_struct_size = + sizeof(struct imgu_vb2_buffer); + vbq->buf_struct_size = imgu->buf_struct_size; + vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + /* can streamon w/o buffers */ + vbq->min_buffers_needed = 0; + vbq->drv_priv = imgu; + vbq->lock = &node->lock; + r = vb2_queue_init(vbq); + if (r) { + dev_err(dev, "failed to initialize video queue (%d)", r); + media_entity_cleanup(&vdev->entity); + return r; + } + + /* Initialize vdev */ + snprintf(vdev->name, sizeof(vdev->name), "%s %u %s", + IMGU_NAME, pipe, node->name); + vdev->release = video_device_release_empty; + vdev->fops = &imgu_v4l2_fops; + vdev->lock = &node->lock; + vdev->v4l2_dev = &imgu->v4l2_dev; + vdev->queue = &node->vbq; + vdev->vfl_dir = node->output ? VFL_DIR_TX : VFL_DIR_RX; + video_set_drvdata(vdev, imgu); + r = video_register_device(vdev, VFL_TYPE_VIDEO, -1); + if (r) { + dev_err(dev, "failed to register video device (%d)", r); + media_entity_cleanup(&vdev->entity); + return r; + } + + /* Create link between video node and the subdev pad */ + flags = 0; + if (node->enabled) + flags |= MEDIA_LNK_FL_ENABLED; + if (node->output) { + r = media_create_pad_link(&vdev->entity, 0, &sd->entity, + node_num, flags); + } else { + if (node->id == IMGU_NODE_OUT) { + flags |= MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE; + node->enabled = true; + } + + r = media_create_pad_link(&sd->entity, node_num, &vdev->entity, + 0, flags); + } + if (r) { + dev_err(dev, "failed to create pad link (%d)", r); + video_unregister_device(vdev); + return r; + } + + return 0; +} + +static void imgu_v4l2_nodes_cleanup_pipe(struct imgu_device *imgu, + unsigned int pipe, int node) +{ + int i; + struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe]; + + for (i = 0; i < node; i++) { + video_unregister_device(&imgu_pipe->nodes[i].vdev); + media_entity_cleanup(&imgu_pipe->nodes[i].vdev.entity); + mutex_destroy(&imgu_pipe->nodes[i].lock); + } +} + +static int imgu_v4l2_nodes_setup_pipe(struct imgu_device *imgu, int pipe) +{ + int i; + + for (i = 0; i < IMGU_NODE_NUM; i++) { + int r = imgu_v4l2_node_setup(imgu, pipe, i); + + if (r) { + imgu_v4l2_nodes_cleanup_pipe(imgu, pipe, i); + return r; + } + } + return 0; +} + +static void imgu_v4l2_subdev_cleanup(struct imgu_device *imgu, unsigned int i) +{ + struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[i]; + + v4l2_device_unregister_subdev(&imgu_pipe->imgu_sd.subdev); + v4l2_ctrl_handler_free(imgu_pipe->imgu_sd.subdev.ctrl_handler); + media_entity_cleanup(&imgu_pipe->imgu_sd.subdev.entity); +} + +static void imgu_v4l2_cleanup_pipes(struct imgu_device *imgu, unsigned int pipe) +{ + int i; + + for (i = 0; i < pipe; i++) { + imgu_v4l2_nodes_cleanup_pipe(imgu, i, IMGU_NODE_NUM); + imgu_v4l2_subdev_cleanup(imgu, i); + } +} + +static int imgu_v4l2_register_pipes(struct imgu_device *imgu) +{ + struct imgu_media_pipe *imgu_pipe; + int i, r; + + for (i = 0; i < IMGU_MAX_PIPE_NUM; i++) { + imgu_pipe = &imgu->imgu_pipe[i]; + r = imgu_v4l2_subdev_register(imgu, &imgu_pipe->imgu_sd, i); + if (r) { + dev_err(&imgu->pci_dev->dev, + "failed to register subdev%u ret (%d)\n", i, r); + goto pipes_cleanup; + } + r = imgu_v4l2_nodes_setup_pipe(imgu, i); + if (r) { + imgu_v4l2_subdev_cleanup(imgu, i); + goto pipes_cleanup; + } + } + + return 0; + +pipes_cleanup: + imgu_v4l2_cleanup_pipes(imgu, i); + return r; +} + +int imgu_v4l2_register(struct imgu_device *imgu) +{ + int r; + + /* Initialize miscellaneous variables */ + imgu->streaming = false; + + /* Set up media device */ + media_device_pci_init(&imgu->media_dev, imgu->pci_dev, IMGU_NAME); + + /* Set up v4l2 device */ + imgu->v4l2_dev.mdev = &imgu->media_dev; + imgu->v4l2_dev.ctrl_handler = NULL; + r = v4l2_device_register(&imgu->pci_dev->dev, &imgu->v4l2_dev); + if (r) { + dev_err(&imgu->pci_dev->dev, + "failed to register V4L2 device (%d)\n", r); + goto fail_v4l2_dev; + } + + r = imgu_v4l2_register_pipes(imgu); + if (r) { + dev_err(&imgu->pci_dev->dev, + "failed to register pipes (%d)\n", r); + goto fail_v4l2_pipes; + } + + r = v4l2_device_register_subdev_nodes(&imgu->v4l2_dev); + if (r) { + dev_err(&imgu->pci_dev->dev, + "failed to register subdevs (%d)\n", r); + goto fail_subdevs; + } + + r = media_device_register(&imgu->media_dev); + if (r) { + dev_err(&imgu->pci_dev->dev, + "failed to register media device (%d)\n", r); + goto fail_subdevs; + } + + return 0; + +fail_subdevs: + imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM); +fail_v4l2_pipes: + v4l2_device_unregister(&imgu->v4l2_dev); +fail_v4l2_dev: + media_device_cleanup(&imgu->media_dev); + + return r; +} + +int imgu_v4l2_unregister(struct imgu_device *imgu) +{ + media_device_unregister(&imgu->media_dev); + imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM); + v4l2_device_unregister(&imgu->v4l2_dev); + media_device_cleanup(&imgu->media_dev); + + return 0; +} + +void imgu_v4l2_buffer_done(struct vb2_buffer *vb, + enum vb2_buffer_state state) +{ + struct imgu_vb2_buffer *b = + container_of(vb, struct imgu_vb2_buffer, vbb.vb2_buf); + + list_del(&b->list); + vb2_buffer_done(&b->vbb.vb2_buf, state); +} |