diff options
Diffstat (limited to 'drivers/staging/media/davinci_vpfe/vpfe_video.c')
| -rw-r--r-- | drivers/staging/media/davinci_vpfe/vpfe_video.c | 1646 |
1 files changed, 0 insertions, 1646 deletions
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c deleted file mode 100644 index ab6bc452d9f6..000000000000 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ /dev/null @@ -1,1646 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2012 Texas Instruments Inc - * - * 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 version 2. - * - * 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. - * - * Contributors: - * Manjunath Hadli <manjunath.hadli@ti.com> - * Prabhakar Lad <prabhakar.lad@ti.com> - */ - -#include <linux/module.h> -#include <linux/slab.h> - -#include <media/v4l2-ioctl.h> - -#include "vpfe.h" -#include "vpfe_mc_capture.h" - -static int debug; - -/* get v4l2 subdev pointer to external subdev which is active */ -static struct media_entity *vpfe_get_input_entity - (struct vpfe_video_device *video) -{ - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct media_pad *remote; - - remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]); - if (!remote) { - pr_err("Invalid media connection to isif/ccdc\n"); - return NULL; - } - return remote->entity; -} - -/* updates external subdev(sensor/decoder) which is active */ -static int vpfe_update_current_ext_subdev(struct vpfe_video_device *video) -{ - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_config *vpfe_cfg; - struct v4l2_subdev *subdev; - struct media_pad *remote; - int i; - - remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]); - if (!remote) { - pr_err("Invalid media connection to isif/ccdc\n"); - return -EINVAL; - } - - subdev = media_entity_to_v4l2_subdev(remote->entity); - vpfe_cfg = vpfe_dev->pdev->platform_data; - for (i = 0; i < vpfe_cfg->num_subdevs; i++) { - if (!strcmp(vpfe_cfg->sub_devs[i].module_name, subdev->name)) { - video->current_ext_subdev = &vpfe_cfg->sub_devs[i]; - break; - } - } - - /* if user not linked decoder/sensor to isif/ccdc */ - if (i == vpfe_cfg->num_subdevs) { - pr_err("Invalid media chain connection to isif/ccdc\n"); - return -EINVAL; - } - /* find the v4l2 subdev pointer */ - for (i = 0; i < vpfe_dev->num_ext_subdevs; i++) { - if (!strcmp(video->current_ext_subdev->module_name, - vpfe_dev->sd[i]->name)) - video->current_ext_subdev->subdev = vpfe_dev->sd[i]; - } - return 0; -} - -/* get the subdev which is connected to the output video node */ -static struct v4l2_subdev * -vpfe_video_remote_subdev(struct vpfe_video_device *video, u32 *pad) -{ - struct media_pad *remote = media_entity_remote_pad(&video->pad); - - if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) - return NULL; - if (pad) - *pad = remote->index; - return media_entity_to_v4l2_subdev(remote->entity); -} - -/* get the format set at output pad of the adjacent subdev */ -static int -__vpfe_video_get_format(struct vpfe_video_device *video, - struct v4l2_format *format) -{ - struct v4l2_subdev_format fmt; - struct v4l2_subdev *subdev; - struct media_pad *remote; - u32 pad; - int ret; - - subdev = vpfe_video_remote_subdev(video, &pad); - if (!subdev) - return -EINVAL; - - fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; - remote = media_entity_remote_pad(&video->pad); - fmt.pad = remote->index; - - ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt); - if (ret == -ENOIOCTLCMD) - return -EINVAL; - - format->type = video->type; - /* convert mbus_format to v4l2_format */ - v4l2_fill_pix_format(&format->fmt.pix, &fmt.format); - mbus_to_pix(&fmt.format, &format->fmt.pix); - - return 0; -} - -/* make a note of pipeline details */ -static int vpfe_prepare_pipeline(struct vpfe_video_device *video) -{ - struct media_graph graph; - struct media_entity *entity = &video->video_dev.entity; - struct media_device *mdev = entity->graph_obj.mdev; - struct vpfe_pipeline *pipe = &video->pipe; - struct vpfe_video_device *far_end = NULL; - int ret; - - pipe->input_num = 0; - pipe->output_num = 0; - - if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) - pipe->inputs[pipe->input_num++] = video; - else - pipe->outputs[pipe->output_num++] = video; - - mutex_lock(&mdev->graph_mutex); - ret = media_graph_walk_init(&graph, mdev); - if (ret) { - mutex_unlock(&mdev->graph_mutex); - return -ENOMEM; - } - media_graph_walk_start(&graph, entity); - while ((entity = media_graph_walk_next(&graph))) { - if (entity == &video->video_dev.entity) - continue; - if (!is_media_entity_v4l2_video_device(entity)) - continue; - far_end = to_vpfe_video(media_entity_to_video_device(entity)); - if (far_end->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) - pipe->inputs[pipe->input_num++] = far_end; - else - pipe->outputs[pipe->output_num++] = far_end; - } - media_graph_walk_cleanup(&graph); - mutex_unlock(&mdev->graph_mutex); - - return 0; -} - -/* update pipe state selected by user */ -static int vpfe_update_pipe_state(struct vpfe_video_device *video) -{ - struct vpfe_pipeline *pipe = &video->pipe; - int ret; - - ret = vpfe_prepare_pipeline(video); - if (ret) - return ret; - - /* - * Find out if there is any input video - * if yes, it is single shot. - */ - if (pipe->input_num == 0) { - pipe->state = VPFE_PIPELINE_STREAM_CONTINUOUS; - ret = vpfe_update_current_ext_subdev(video); - if (ret) { - pr_err("Invalid external subdev\n"); - return ret; - } - } else { - pipe->state = VPFE_PIPELINE_STREAM_SINGLESHOT; - } - video->initialized = 1; - video->skip_frame_count = 1; - video->skip_frame_count_init = 1; - return 0; -} - -/* checks whether pipeline is ready for enabling */ -int vpfe_video_is_pipe_ready(struct vpfe_pipeline *pipe) -{ - int i; - - for (i = 0; i < pipe->input_num; i++) - if (!pipe->inputs[i]->started || - pipe->inputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED) - return 0; - for (i = 0; i < pipe->output_num; i++) - if (!pipe->outputs[i]->started || - pipe->outputs[i]->state != VPFE_VIDEO_BUFFER_QUEUED) - return 0; - return 1; -} - -/* - * Validate a pipeline by checking both ends of all links for format - * discrepancies. - * - * Return 0 if all formats match, or -EPIPE if at least one link is found with - * different formats on its two ends. - */ -static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe) -{ - struct v4l2_subdev_format fmt_source; - struct v4l2_subdev_format fmt_sink; - struct v4l2_subdev *subdev; - struct media_pad *pad; - int ret; - - /* - * Should not matter if it is output[0] or 1 as - * the general ideas is to traverse backwards and - * the fact that the out video node always has the - * format of the connected pad. - */ - subdev = vpfe_video_remote_subdev(pipe->outputs[0], NULL); - if (!subdev) - return -EPIPE; - - while (1) { - /* Retrieve the sink format */ - pad = &subdev->entity.pads[0]; - if (!(pad->flags & MEDIA_PAD_FL_SINK)) - break; - - fmt_sink.which = V4L2_SUBDEV_FORMAT_ACTIVE; - fmt_sink.pad = pad->index; - ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, - &fmt_sink); - - if (ret < 0 && ret != -ENOIOCTLCMD) - return -EPIPE; - - /* Retrieve the source format */ - pad = media_entity_remote_pad(pad); - if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) - break; - - subdev = media_entity_to_v4l2_subdev(pad->entity); - - fmt_source.which = V4L2_SUBDEV_FORMAT_ACTIVE; - fmt_source.pad = pad->index; - ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_source); - if (ret < 0 && ret != -ENOIOCTLCMD) - return -EPIPE; - - /* Check if the two ends match */ - if (fmt_source.format.code != fmt_sink.format.code || - fmt_source.format.width != fmt_sink.format.width || - fmt_source.format.height != fmt_sink.format.height) - return -EPIPE; - } - return 0; -} - -/* - * vpfe_pipeline_enable() - Enable streaming on a pipeline - * @vpfe_dev: vpfe device - * @pipe: vpfe pipeline - * - * Walk the entities chain starting at the pipeline output video node and start - * all modules in the chain in the given mode. - * - * Return 0 if successful, or the return value of the failed video::s_stream - * operation otherwise. - */ -static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) -{ - struct media_entity *entity; - struct v4l2_subdev *subdev; - struct media_device *mdev; - int ret; - - if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) - entity = vpfe_get_input_entity(pipe->outputs[0]); - else - entity = &pipe->inputs[0]->video_dev.entity; - - mdev = entity->graph_obj.mdev; - mutex_lock(&mdev->graph_mutex); - ret = media_graph_walk_init(&pipe->graph, mdev); - if (ret) - goto out; - media_graph_walk_start(&pipe->graph, entity); - while ((entity = media_graph_walk_next(&pipe->graph))) { - - if (!is_media_entity_v4l2_subdev(entity)) - continue; - subdev = media_entity_to_v4l2_subdev(entity); - ret = v4l2_subdev_call(subdev, video, s_stream, 1); - if (ret < 0 && ret != -ENOIOCTLCMD) - break; - } -out: - if (ret) - media_graph_walk_cleanup(&pipe->graph); - mutex_unlock(&mdev->graph_mutex); - return ret; -} - -/* - * vpfe_pipeline_disable() - Disable streaming on a pipeline - * @vpfe_dev: vpfe device - * @pipe: VPFE pipeline - * - * Walk the entities chain starting at the pipeline output video node and stop - * all modules in the chain. - * - * Return 0 if all modules have been properly stopped, or -ETIMEDOUT if a module - * can't be stopped. - */ -static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) -{ - struct media_entity *entity; - struct v4l2_subdev *subdev; - struct media_device *mdev; - int ret = 0; - - if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) - entity = vpfe_get_input_entity(pipe->outputs[0]); - else - entity = &pipe->inputs[0]->video_dev.entity; - - mdev = entity->graph_obj.mdev; - mutex_lock(&mdev->graph_mutex); - media_graph_walk_start(&pipe->graph, entity); - - while ((entity = media_graph_walk_next(&pipe->graph))) { - - if (!is_media_entity_v4l2_subdev(entity)) - continue; - subdev = media_entity_to_v4l2_subdev(entity); - ret = v4l2_subdev_call(subdev, video, s_stream, 0); - if (ret < 0 && ret != -ENOIOCTLCMD) - break; - } - mutex_unlock(&mdev->graph_mutex); - - media_graph_walk_cleanup(&pipe->graph); - return ret ? -ETIMEDOUT : 0; -} - -/* - * vpfe_pipeline_set_stream() - Enable/disable streaming on a pipeline - * @vpfe_dev: VPFE device - * @pipe: VPFE pipeline - * @state: Stream state (stopped or active) - * - * Set the pipeline to the given stream state. - * - * Return 0 if successful, or the return value of the failed video::s_stream - * operation otherwise. - */ -static int vpfe_pipeline_set_stream(struct vpfe_pipeline *pipe, - enum vpfe_pipeline_stream_state state) -{ - if (state == VPFE_PIPELINE_STREAM_STOPPED) - return vpfe_pipeline_disable(pipe); - - return vpfe_pipeline_enable(pipe); -} - -static int all_videos_stopped(struct vpfe_video_device *video) -{ - struct vpfe_pipeline *pipe = &video->pipe; - int i; - - for (i = 0; i < pipe->input_num; i++) - if (pipe->inputs[i]->started) - return 0; - for (i = 0; i < pipe->output_num; i++) - if (pipe->outputs[i]->started) - return 0; - return 1; -} - -/* - * vpfe_open() - open video device - * @file: file pointer - * - * initialize media pipeline state, allocate memory for file handle - * - * Return 0 if successful, or the return -ENODEV otherwise. - */ -static int vpfe_open(struct file *file) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_fh *handle; - - /* Allocate memory for the file handle object */ - handle = kzalloc(sizeof(struct vpfe_fh), GFP_KERNEL); - - if (!handle) - return -ENOMEM; - - v4l2_fh_init(&handle->vfh, &video->video_dev); - v4l2_fh_add(&handle->vfh); - - mutex_lock(&video->lock); - /* If decoder is not initialized. initialize it */ - if (!video->initialized && vpfe_update_pipe_state(video)) { - mutex_unlock(&video->lock); - v4l2_fh_del(&handle->vfh); - v4l2_fh_exit(&handle->vfh); - kfree(handle); - return -ENODEV; - } - /* Increment device users counter */ - video->usrs++; - /* Set io_allowed member to false */ - handle->io_allowed = 0; - handle->video = video; - file->private_data = &handle->vfh; - mutex_unlock(&video->lock); - - return 0; -} - -/* get the next buffer available from dma queue */ -static unsigned long -vpfe_video_get_next_buffer(struct vpfe_video_device *video) -{ - video->cur_frm = video->next_frm = - list_entry(video->dma_queue.next, - struct vpfe_cap_buffer, list); - - list_del(&video->next_frm->list); - video->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE; - return vb2_dma_contig_plane_dma_addr(&video->next_frm->vb.vb2_buf, 0); -} - -/* schedule the next buffer which is available on dma queue */ -void vpfe_video_schedule_next_buffer(struct vpfe_video_device *video) -{ - struct vpfe_device *vpfe_dev = video->vpfe_dev; - unsigned long addr; - - if (list_empty(&video->dma_queue)) - return; - - video->next_frm = list_entry(video->dma_queue.next, - struct vpfe_cap_buffer, list); - - if (video->pipe.state == VPFE_PIPELINE_STREAM_SINGLESHOT) - video->cur_frm = video->next_frm; - - list_del(&video->next_frm->list); - video->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE; - addr = vb2_dma_contig_plane_dma_addr(&video->next_frm->vb.vb2_buf, 0); - video->ops->queue(vpfe_dev, addr); - video->state = VPFE_VIDEO_BUFFER_QUEUED; -} - -/* schedule the buffer for capturing bottom field */ -void vpfe_video_schedule_bottom_field(struct vpfe_video_device *video) -{ - struct vpfe_device *vpfe_dev = video->vpfe_dev; - unsigned long addr; - - addr = vb2_dma_contig_plane_dma_addr(&video->cur_frm->vb.vb2_buf, 0); - addr += video->field_off; - video->ops->queue(vpfe_dev, addr); -} - -/* make buffer available for dequeue */ -void vpfe_video_process_buffer_complete(struct vpfe_video_device *video) -{ - struct vpfe_pipeline *pipe = &video->pipe; - - video->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns(); - vb2_buffer_done(&video->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE); - if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) - video->cur_frm = video->next_frm; -} - -/* vpfe_stop_capture() - stop streaming */ -static void vpfe_stop_capture(struct vpfe_video_device *video) -{ - struct vpfe_pipeline *pipe = &video->pipe; - - video->started = 0; - - if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) - return; - if (all_videos_stopped(video)) - vpfe_pipeline_set_stream(pipe, - VPFE_PIPELINE_STREAM_STOPPED); -} - -/* - * vpfe_release() - release video device - * @file: file pointer - * - * deletes buffer queue, frees the buffers and the vpfe file handle - * - * Return 0 - */ -static int vpfe_release(struct file *file) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct v4l2_fh *vfh = file->private_data; - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_fh *fh = container_of(vfh, struct vpfe_fh, vfh); - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_release\n"); - - /* Get the device lock */ - mutex_lock(&video->lock); - /* if this instance is doing IO */ - if (fh->io_allowed) { - if (video->started) { - vpfe_stop_capture(video); - /* - * mark pipe state as stopped in vpfe_release(), - * as app might call streamon() after streamoff() - * in which case driver has to start streaming. - */ - video->pipe.state = VPFE_PIPELINE_STREAM_STOPPED; - vb2_streamoff(&video->buffer_queue, - video->buffer_queue.type); - } - video->io_usrs = 0; - /* Free buffers allocated */ - vb2_queue_release(&video->buffer_queue); - } - /* Decrement device users counter */ - video->usrs--; - v4l2_fh_del(&fh->vfh); - v4l2_fh_exit(&fh->vfh); - /* If this is the last file handle */ - if (!video->usrs) - video->initialized = 0; - mutex_unlock(&video->lock); - file->private_data = NULL; - /* Free memory allocated to file handle object */ - v4l2_fh_del(vfh); - kzfree(fh); - return 0; -} - -/* - * vpfe_mmap() - It is used to map kernel space buffers - * into user spaces - */ -static int vpfe_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_mmap\n"); - return vb2_mmap(&video->buffer_queue, vma); -} - -/* - * vpfe_poll() - It is used for select/poll system call - */ -static __poll_t vpfe_poll(struct file *file, poll_table *wait) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_poll\n"); - if (video->started) - return vb2_poll(&video->buffer_queue, file, wait); - return 0; -} - -/* vpfe capture driver file operations */ -static const struct v4l2_file_operations vpfe_fops = { - .owner = THIS_MODULE, - .open = vpfe_open, - .release = vpfe_release, - .unlocked_ioctl = video_ioctl2, - .mmap = vpfe_mmap, - .poll = vpfe_poll -}; - -/* - * vpfe_querycap() - query capabilities of video device - * @file: file pointer - * @priv: void pointer - * @cap: pointer to v4l2_capability structure - * - * fills v4l2 capabilities structure - * - * Return 0 - */ -static int vpfe_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querycap\n"); - - cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | - V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS; - strscpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver)); - strscpy(cap->bus_info, "VPFE", sizeof(cap->bus_info)); - strscpy(cap->card, vpfe_dev->cfg->card_name, sizeof(cap->card)); - - return 0; -} - -/* - * vpfe_g_fmt() - get the format which is active on video device - * @file: file pointer - * @priv: void pointer - * @fmt: pointer to v4l2_format structure - * - * fills v4l2 format structure with active format - * - * Return 0 - */ -static int vpfe_g_fmt(struct file *file, void *priv, - struct v4l2_format *fmt) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_fmt\n"); - /* Fill in the information about format */ - *fmt = video->fmt; - return 0; -} - -/* - * vpfe_enum_fmt() - enum formats supported on media chain - * @file: file pointer - * @priv: void pointer - * @fmt: pointer to v4l2_fmtdesc structure - * - * fills v4l2_fmtdesc structure with output format set on adjacent subdev, - * only one format is enumearted as subdevs are already configured - * - * Return 0 if successful, error code otherwise - */ -static int vpfe_enum_fmt(struct file *file, void *priv, - struct v4l2_fmtdesc *fmt) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct v4l2_subdev_format sd_fmt; - struct v4l2_mbus_framefmt mbus; - struct v4l2_subdev *subdev; - struct v4l2_format format; - struct media_pad *remote; - int ret; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_fmt\n"); - - /* - * since already subdev pad format is set, - * only one pixel format is available - */ - if (fmt->index > 0) { - v4l2_err(&vpfe_dev->v4l2_dev, "Invalid index\n"); - return -EINVAL; - } - /* get the remote pad */ - remote = media_entity_remote_pad(&video->pad); - if (!remote) { - v4l2_err(&vpfe_dev->v4l2_dev, - "invalid remote pad for video node\n"); - return -EINVAL; - } - /* get the remote subdev */ - subdev = vpfe_video_remote_subdev(video, NULL); - if (!subdev) { - v4l2_err(&vpfe_dev->v4l2_dev, - "invalid remote subdev for video node\n"); - return -EINVAL; - } - sd_fmt.pad = remote->index; - sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; - /* get output format of remote subdev */ - ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &sd_fmt); - if (ret) { - v4l2_err(&vpfe_dev->v4l2_dev, - "invalid remote subdev for video node\n"); - return ret; - } - /* convert to pix format */ - mbus.code = sd_fmt.format.code; - mbus_to_pix(&mbus, &format.fmt.pix); - /* copy the result */ - fmt->pixelformat = format.fmt.pix.pixelformat; - - return 0; -} - -/* - * vpfe_s_fmt() - set the format on video device - * @file: file pointer - * @priv: void pointer - * @fmt: pointer to v4l2_format structure - * - * validate and set the format on video device - * - * Return 0 on success, error code otherwise - */ -static int vpfe_s_fmt(struct file *file, void *priv, - struct v4l2_format *fmt) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct v4l2_format format; - int ret; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_fmt\n"); - /* If streaming is started, return error */ - if (video->started) { - v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is started\n"); - return -EBUSY; - } - /* get adjacent subdev's output pad format */ - ret = __vpfe_video_get_format(video, &format); - if (ret) - return ret; - *fmt = format; - video->fmt = *fmt; - return 0; -} - -/* - * vpfe_try_fmt() - try the format on video device - * @file: file pointer - * @priv: void pointer - * @fmt: pointer to v4l2_format structure - * - * validate the format, update with correct format - * based on output format set on adjacent subdev - * - * Return 0 on success, error code otherwise - */ -static int vpfe_try_fmt(struct file *file, void *priv, - struct v4l2_format *fmt) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct v4l2_format format; - int ret; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_try_fmt\n"); - /* get adjacent subdev's output pad format */ - ret = __vpfe_video_get_format(video, &format); - if (ret) - return ret; - - *fmt = format; - return 0; -} - -/* - * vpfe_enum_input() - enum inputs supported on media chain - * @file: file pointer - * @priv: void pointer - * @fmt: pointer to v4l2_fmtdesc structure - * - * fills v4l2_input structure with input available on media chain, - * only one input is enumearted as media chain is setup by this time - * - * Return 0 if successful, -EINVAL is media chain is invalid - */ -static int vpfe_enum_input(struct file *file, void *priv, - struct v4l2_input *inp) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_ext_subdev_info *sdinfo = video->current_ext_subdev; - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_input\n"); - /* enumerate from the subdev user has chosen through mc */ - if (inp->index < sdinfo->num_inputs) { - memcpy(inp, &sdinfo->inputs[inp->index], - sizeof(struct v4l2_input)); - return 0; - } - return -EINVAL; -} - -/* - * vpfe_g_input() - get index of the input which is active - * @file: file pointer - * @priv: void pointer - * @index: pointer to unsigned int - * - * set index with input index which is active - */ -static int vpfe_g_input(struct file *file, void *priv, unsigned int *index) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_input\n"); - - *index = video->current_input; - return 0; -} - -/* - * vpfe_s_input() - set input which is pointed by input index - * @file: file pointer - * @priv: void pointer - * @index: pointer to unsigned int - * - * set input on external subdev - * - * Return 0 on success, error code otherwise - */ -static int vpfe_s_input(struct file *file, void *priv, unsigned int index) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_ext_subdev_info *sdinfo; - struct vpfe_route *route; - struct v4l2_input *inps; - u32 output; - u32 input; - int ret; - int i; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_input\n"); - - ret = mutex_lock_interruptible(&video->lock); - if (ret) - return ret; - /* - * If streaming is started return device busy - * error - */ - if (video->started) { - v4l2_err(&vpfe_dev->v4l2_dev, "Streaming is on\n"); - ret = -EBUSY; - goto unlock_out; - } - - sdinfo = video->current_ext_subdev; - if (!sdinfo->registered) { - ret = -EINVAL; - goto unlock_out; - } - if (vpfe_dev->cfg->setup_input && - vpfe_dev->cfg->setup_input(sdinfo->grp_id) < 0) { - ret = -EFAULT; - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, - "couldn't setup input for %s\n", - sdinfo->module_name); - goto unlock_out; - } - route = &sdinfo->routes[index]; - if (route && sdinfo->can_route) { - input = route->input; - output = route->output; - ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, - sdinfo->grp_id, video, - s_routing, input, output, 0); - if (ret) { - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, - "s_input:error in setting input in decoder\n"); - ret = -EINVAL; - goto unlock_out; - } - } - /* set standards set by subdev in video device */ - for (i = 0; i < sdinfo->num_inputs; i++) { - inps = &sdinfo->inputs[i]; - video->video_dev.tvnorms |= inps->std; - } - video->current_input = index; -unlock_out: - mutex_unlock(&video->lock); - return ret; -} - -/* - * vpfe_querystd() - query std which is being input on external subdev - * @file: file pointer - * @priv: void pointer - * @std_id: pointer to v4l2_std_id structure - * - * call external subdev through v4l2_device_call_until_err to - * get the std that is being active. - * - * Return 0 on success, error code otherwise - */ -static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_ext_subdev_info *sdinfo; - int ret; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querystd\n"); - - ret = mutex_lock_interruptible(&video->lock); - sdinfo = video->current_ext_subdev; - if (ret) - return ret; - /* Call querystd function of decoder device */ - ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, - video, querystd, std_id); - mutex_unlock(&video->lock); - return ret; -} - -/* - * vpfe_s_std() - set std on external subdev - * @file: file pointer - * @priv: void pointer - * @std_id: pointer to v4l2_std_id structure - * - * set std pointed by std_id on external subdev by calling it using - * v4l2_device_call_until_err - * - * Return 0 on success, error code otherwise - */ -static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_ext_subdev_info *sdinfo; - int ret; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_std\n"); - - /* Call decoder driver function to set the standard */ - ret = mutex_lock_interruptible(&video->lock); - if (ret) - return ret; - sdinfo = video->current_ext_subdev; - /* If streaming is started, return device busy error */ - if (video->started) { - v4l2_err(&vpfe_dev->v4l2_dev, "streaming is started\n"); - ret = -EBUSY; - goto unlock_out; - } - ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id, - video, s_std, std_id); - if (ret < 0) { - v4l2_err(&vpfe_dev->v4l2_dev, "Failed to set standard\n"); - video->stdid = V4L2_STD_UNKNOWN; - goto unlock_out; - } - video->stdid = std_id; -unlock_out: - mutex_unlock(&video->lock); - return ret; -} - -static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *tvnorm) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_std\n"); - *tvnorm = video->stdid; - return 0; -} - -/* - * vpfe_enum_dv_timings() - enumerate dv_timings which are supported by - * to external subdev - * @file: file pointer - * @priv: void pointer - * @timings: pointer to v4l2_enum_dv_timings structure - * - * enum dv_timings's which are supported by external subdev through - * v4l2_subdev_call - * - * Return 0 on success, error code otherwise - */ -static int -vpfe_enum_dv_timings(struct file *file, void *fh, - struct v4l2_enum_dv_timings *timings) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; - - timings->pad = 0; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_enum_dv_timings\n"); - return v4l2_subdev_call(subdev, pad, enum_dv_timings, timings); -} - -/* - * vpfe_query_dv_timings() - query the dv_timings which is being input - * to external subdev - * @file: file pointer - * @priv: void pointer - * @timings: pointer to v4l2_dv_timings structure - * - * get dv_timings which is being input on external subdev through - * v4l2_subdev_call - * - * Return 0 on success, error code otherwise - */ -static int -vpfe_query_dv_timings(struct file *file, void *fh, - struct v4l2_dv_timings *timings) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_query_dv_timings\n"); - return v4l2_subdev_call(subdev, video, query_dv_timings, timings); -} - -/* - * vpfe_s_dv_timings() - set dv_timings on external subdev - * @file: file pointer - * @priv: void pointer - * @timings: pointer to v4l2_dv_timings structure - * - * set dv_timings pointed by timings on external subdev through - * v4l2_device_call_until_err, this configures amplifier also - * - * Return 0 on success, error code otherwise - */ -static int -vpfe_s_dv_timings(struct file *file, void *fh, - struct v4l2_dv_timings *timings) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_s_dv_timings\n"); - - video->stdid = V4L2_STD_UNKNOWN; - return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, - video->current_ext_subdev->grp_id, - video, s_dv_timings, timings); -} - -/* - * vpfe_g_dv_timings() - get dv_timings which is set on external subdev - * @file: file pointer - * @priv: void pointer - * @timings: pointer to v4l2_dv_timings structure - * - * get dv_timings which is set on external subdev through - * v4l2_subdev_call - * - * Return 0 on success, error code otherwise - */ -static int -vpfe_g_dv_timings(struct file *file, void *fh, - struct v4l2_dv_timings *timings) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct v4l2_subdev *subdev = video->current_ext_subdev->subdev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_g_dv_timings\n"); - return v4l2_subdev_call(subdev, video, g_dv_timings, timings); -} - -/* - * Videobuf operations - */ -/* - * vpfe_buffer_queue_setup : Callback function for buffer setup. - * @vq: vb2_queue ptr - * @fmt: v4l2 format - * @nbuffers: ptr to number of buffers requested by application - * @nplanes:: contains number of distinct video planes needed to hold a frame - * @sizes[]: contains the size (in bytes) of each plane. - * @alloc_devs: ptr to allocation context - * - * This callback function is called when reqbuf() is called to adjust - * the buffer nbuffers and buffer size - */ -static int -vpfe_buffer_queue_setup(struct vb2_queue *vq, - unsigned int *nbuffers, unsigned int *nplanes, - unsigned int sizes[], struct device *alloc_devs[]) -{ - struct vpfe_fh *fh = vb2_get_drv_priv(vq); - struct vpfe_video_device *video = fh->video; - struct vpfe_device *vpfe_dev = video->vpfe_dev; - unsigned long size; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_queue_setup\n"); - size = video->fmt.fmt.pix.sizeimage; - - if (vq->num_buffers + *nbuffers < 3) - *nbuffers = 3 - vq->num_buffers; - - *nplanes = 1; - sizes[0] = size; - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, - "nbuffers=%d, size=%lu\n", *nbuffers, size); - return 0; -} - -/* - * vpfe_buffer_prepare : callback function for buffer prepare - * @vb: ptr to vb2_buffer - * - * This is the callback function for buffer prepare when vb2_qbuf() - * function is called. The buffer is prepared and user space virtual address - * or user address is converted into physical address - */ -static int vpfe_buffer_prepare(struct vb2_buffer *vb) -{ - struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vpfe_video_device *video = fh->video; - struct vpfe_device *vpfe_dev = video->vpfe_dev; - unsigned long addr; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n"); - - /* Initialize buffer */ - vb2_set_plane_payload(vb, 0, video->fmt.fmt.pix.sizeimage); - if (vb2_plane_vaddr(vb, 0) && - vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) - return -EINVAL; - - addr = vb2_dma_contig_plane_dma_addr(vb, 0); - /* Make sure user addresses are aligned to 32 bytes */ - if (!ALIGN(addr, 32)) - return -EINVAL; - - return 0; -} - -static void vpfe_buffer_queue(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - /* Get the file handle object and device object */ - struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vpfe_video_device *video = fh->video; - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_pipeline *pipe = &video->pipe; - struct vpfe_cap_buffer *buf = container_of(vbuf, - struct vpfe_cap_buffer, vb); - unsigned long flags; - unsigned long empty; - unsigned long addr; - - spin_lock_irqsave(&video->dma_queue_lock, flags); - empty = list_empty(&video->dma_queue); - /* add the buffer to the DMA queue */ - list_add_tail(&buf->list, &video->dma_queue); - spin_unlock_irqrestore(&video->dma_queue_lock, flags); - /* this case happens in case of single shot */ - if (empty && video->started && pipe->state == - VPFE_PIPELINE_STREAM_SINGLESHOT && - video->state == VPFE_VIDEO_BUFFER_NOT_QUEUED) { - spin_lock(&video->dma_queue_lock); - addr = vpfe_video_get_next_buffer(video); - video->ops->queue(vpfe_dev, addr); - - video->state = VPFE_VIDEO_BUFFER_QUEUED; - spin_unlock(&video->dma_queue_lock); - - /* enable h/w each time in single shot */ - if (vpfe_video_is_pipe_ready(pipe)) - vpfe_pipeline_set_stream(pipe, - VPFE_PIPELINE_STREAM_SINGLESHOT); - } -} - -/* vpfe_start_capture() - start streaming on all the subdevs */ -static int vpfe_start_capture(struct vpfe_video_device *video) -{ - struct vpfe_pipeline *pipe = &video->pipe; - int ret = 0; - - video->started = 1; - if (vpfe_video_is_pipe_ready(pipe)) - ret = vpfe_pipeline_set_stream(pipe, pipe->state); - - return ret; -} - -static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count) -{ - struct vpfe_fh *fh = vb2_get_drv_priv(vq); - struct vpfe_video_device *video = fh->video; - struct vpfe_device *vpfe_dev = video->vpfe_dev; - unsigned long addr; - int ret; - - ret = mutex_lock_interruptible(&video->lock); - if (ret) - goto streamoff; - - /* Get the next frame from the buffer queue */ - video->cur_frm = video->next_frm = - list_entry(video->dma_queue.next, struct vpfe_cap_buffer, list); - /* Remove buffer from the buffer queue */ - list_del(&video->cur_frm->list); - /* Mark state of the current frame to active */ - video->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE; - /* Initialize field_id and started member */ - video->field_id = 0; - addr = vb2_dma_contig_plane_dma_addr(&video->cur_frm->vb.vb2_buf, 0); - video->ops->queue(vpfe_dev, addr); - video->state = VPFE_VIDEO_BUFFER_QUEUED; - - ret = vpfe_start_capture(video); - if (ret) { - struct vpfe_cap_buffer *buf, *tmp; - - vb2_buffer_done(&video->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_QUEUED); - list_for_each_entry_safe(buf, tmp, &video->dma_queue, list) { - list_del(&buf->list); - vb2_buffer_done(&buf->vb.vb2_buf, - VB2_BUF_STATE_QUEUED); - } - goto unlock_out; - } - - mutex_unlock(&video->lock); - - return ret; -unlock_out: - mutex_unlock(&video->lock); -streamoff: - ret = vb2_streamoff(&video->buffer_queue, video->buffer_queue.type); - return 0; -} - -static int vpfe_buffer_init(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - struct vpfe_cap_buffer *buf = container_of(vbuf, - struct vpfe_cap_buffer, vb); - - INIT_LIST_HEAD(&buf->list); - return 0; -} - -/* abort streaming and wait for last buffer */ -static void vpfe_stop_streaming(struct vb2_queue *vq) -{ - struct vpfe_fh *fh = vb2_get_drv_priv(vq); - struct vpfe_video_device *video = fh->video; - - /* release all active buffers */ - if (video->cur_frm == video->next_frm) { - vb2_buffer_done(&video->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } else { - if (video->cur_frm != NULL) - vb2_buffer_done(&video->cur_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - if (video->next_frm != NULL) - vb2_buffer_done(&video->next_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } - - while (!list_empty(&video->dma_queue)) { - video->next_frm = list_entry(video->dma_queue.next, - struct vpfe_cap_buffer, list); - list_del(&video->next_frm->list); - vb2_buffer_done(&video->next_frm->vb.vb2_buf, - VB2_BUF_STATE_ERROR); - } -} - -static void vpfe_buf_cleanup(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue); - struct vpfe_video_device *video = fh->video; - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_cap_buffer *buf = container_of(vbuf, - struct vpfe_cap_buffer, vb); - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buf_cleanup\n"); - if (vb->state == VB2_BUF_STATE_ACTIVE) - list_del_init(&buf->list); -} - -static const struct vb2_ops video_qops = { - .queue_setup = vpfe_buffer_queue_setup, - .buf_init = vpfe_buffer_init, - .buf_prepare = vpfe_buffer_prepare, - .start_streaming = vpfe_start_streaming, - .stop_streaming = vpfe_stop_streaming, - .buf_cleanup = vpfe_buf_cleanup, - .buf_queue = vpfe_buffer_queue, - .wait_prepare = vb2_ops_wait_prepare, - .wait_finish = vb2_ops_wait_finish, -}; - -/* - * vpfe_reqbufs() - supported REQBUF only once opening - * the device. - */ -static int vpfe_reqbufs(struct file *file, void *priv, - struct v4l2_requestbuffers *req_buf) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_fh *fh = file->private_data; - struct vb2_queue *q; - int ret; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs\n"); - - if (req_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - req_buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT){ - v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buffer type\n"); - return -EINVAL; - } - - ret = mutex_lock_interruptible(&video->lock); - if (ret) - return ret; - - if (video->io_usrs != 0) { - v4l2_err(&vpfe_dev->v4l2_dev, "Only one IO user allowed\n"); - ret = -EBUSY; - goto unlock_out; - } - video->memory = req_buf->memory; - - /* Initialize videobuf2 queue as per the buffer type */ - q = &video->buffer_queue; - q->type = req_buf->type; - q->io_modes = VB2_MMAP | VB2_USERPTR; - q->drv_priv = fh; - q->min_buffers_needed = 1; - q->ops = &video_qops; - q->mem_ops = &vb2_dma_contig_memops; - q->buf_struct_size = sizeof(struct vpfe_cap_buffer); - q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - q->dev = vpfe_dev->pdev; - q->lock = &video->lock; - - ret = vb2_queue_init(q); - if (ret) { - v4l2_err(&vpfe_dev->v4l2_dev, "vb2_queue_init() failed\n"); - goto unlock_out; - } - - fh->io_allowed = 1; - video->io_usrs = 1; - INIT_LIST_HEAD(&video->dma_queue); - ret = vb2_reqbufs(&video->buffer_queue, req_buf); - -unlock_out: - mutex_unlock(&video->lock); - return ret; -} - -/* - * vpfe_querybuf() - query buffers for exchange - */ -static int vpfe_querybuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_querybuf\n"); - - if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { - v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); - return -EINVAL; - } - - if (video->memory != V4L2_MEMORY_MMAP) { - v4l2_err(&vpfe_dev->v4l2_dev, "Invalid memory\n"); - return -EINVAL; - } - - /* Call vb2_querybuf to get information */ - return vb2_querybuf(&video->buffer_queue, buf); -} - -/* - * vpfe_qbuf() - queue buffers for capture or processing - */ -static int vpfe_qbuf(struct file *file, void *priv, - struct v4l2_buffer *p) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_fh *fh = file->private_data; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_qbuf\n"); - - if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - p->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { - v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); - return -EINVAL; - } - /* - * If this file handle is not allowed to do IO, - * return error - */ - if (!fh->io_allowed) { - v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); - return -EACCES; - } - - return vb2_qbuf(&video->buffer_queue, - video->video_dev.v4l2_dev->mdev, p); -} - -/* - * vpfe_dqbuf() - deque buffer which is done with processing - */ -static int vpfe_dqbuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_dqbuf\n"); - - if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { - v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); - return -EINVAL; - } - - return vb2_dqbuf(&video->buffer_queue, - buf, (file->f_flags & O_NONBLOCK)); -} - -/* - * vpfe_streamon() - start streaming - * @file: file pointer - * @priv: void pointer - * @buf_type: enum v4l2_buf_type - * - * queue buffer onto hardware for capture/processing and - * start all the subdevs which are in media chain - * - * Return 0 on success, error code otherwise - */ -static int vpfe_streamon(struct file *file, void *priv, - enum v4l2_buf_type buf_type) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_pipeline *pipe = &video->pipe; - struct vpfe_fh *fh = file->private_data; - int ret = -EINVAL; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamon\n"); - - if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - buf_type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { - v4l2_err(&vpfe_dev->v4l2_dev, "Invalid buf type\n"); - return ret; - } - /* If file handle is not allowed IO, return error */ - if (!fh->io_allowed) { - v4l2_err(&vpfe_dev->v4l2_dev, "fh->io_allowed\n"); - return -EACCES; - } - /* If buffer queue is empty, return error */ - if (list_empty(&video->buffer_queue.queued_list)) { - v4l2_err(&vpfe_dev->v4l2_dev, "buffer queue is empty\n"); - return -EIO; - } - /* Validate the pipeline */ - if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { - ret = vpfe_video_validate_pipeline(pipe); - if (ret < 0) - return ret; - } - /* Call vb2_streamon to start streaming */ - return vb2_streamon(&video->buffer_queue, buf_type); -} - -/* - * vpfe_streamoff() - stop streaming - * @file: file pointer - * @priv: void pointer - * @buf_type: enum v4l2_buf_type - * - * stop all the subdevs which are in media chain - * - * Return 0 on success, error code otherwise - */ -static int vpfe_streamoff(struct file *file, void *priv, - enum v4l2_buf_type buf_type) -{ - struct vpfe_video_device *video = video_drvdata(file); - struct vpfe_device *vpfe_dev = video->vpfe_dev; - struct vpfe_fh *fh = file->private_data; - int ret = 0; - - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_streamoff\n"); - - if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE && - buf_type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "Invalid buf type\n"); - return -EINVAL; - } - - /* If io is allowed for this file handle, return error */ - if (!fh->io_allowed) { - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "fh->io_allowed\n"); - return -EACCES; - } - - /* If streaming is not started, return error */ - if (!video->started) { - v4l2_err(&vpfe_dev->v4l2_dev, "device is not started\n"); - return -EINVAL; - } - - ret = mutex_lock_interruptible(&video->lock); - if (ret) - return ret; - - vpfe_stop_capture(video); - ret = vb2_streamoff(&video->buffer_queue, buf_type); - mutex_unlock(&video->lock); - - return ret; -} - -/* vpfe capture ioctl operations */ -static const struct v4l2_ioctl_ops vpfe_ioctl_ops = { - .vidioc_querycap = vpfe_querycap, - .vidioc_g_fmt_vid_cap = vpfe_g_fmt, - .vidioc_s_fmt_vid_cap = vpfe_s_fmt, - .vidioc_try_fmt_vid_cap = vpfe_try_fmt, - .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt, - .vidioc_g_fmt_vid_out = vpfe_g_fmt, - .vidioc_s_fmt_vid_out = vpfe_s_fmt, - .vidioc_try_fmt_vid_out = vpfe_try_fmt, - .vidioc_enum_fmt_vid_out = vpfe_enum_fmt, - .vidioc_enum_input = vpfe_enum_input, - .vidioc_g_input = vpfe_g_input, - .vidioc_s_input = vpfe_s_input, - .vidioc_querystd = vpfe_querystd, - .vidioc_s_std = vpfe_s_std, - .vidioc_g_std = vpfe_g_std, - .vidioc_enum_dv_timings = vpfe_enum_dv_timings, - .vidioc_query_dv_timings = vpfe_query_dv_timings, - .vidioc_s_dv_timings = vpfe_s_dv_timings, - .vidioc_g_dv_timings = vpfe_g_dv_timings, - .vidioc_reqbufs = vpfe_reqbufs, - .vidioc_querybuf = vpfe_querybuf, - .vidioc_qbuf = vpfe_qbuf, - .vidioc_dqbuf = vpfe_dqbuf, - .vidioc_streamon = vpfe_streamon, - .vidioc_streamoff = vpfe_streamoff, -}; - -/* VPFE video init function */ -int vpfe_video_init(struct vpfe_video_device *video, const char *name) -{ - const char *direction; - int ret; - - switch (video->type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - direction = "output"; - video->pad.flags = MEDIA_PAD_FL_SINK; - video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - break; - - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - direction = "input"; - video->pad.flags = MEDIA_PAD_FL_SOURCE; - video->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - break; - - default: - return -EINVAL; - } - /* Initialize field of video device */ - mutex_init(&video->lock); - video->video_dev.release = video_device_release; - video->video_dev.fops = &vpfe_fops; - video->video_dev.ioctl_ops = &vpfe_ioctl_ops; - video->video_dev.minor = -1; - video->video_dev.tvnorms = 0; - video->video_dev.lock = &video->lock; - snprintf(video->video_dev.name, sizeof(video->video_dev.name), - "DAVINCI VIDEO %s %s", name, direction); - - spin_lock_init(&video->irqlock); - spin_lock_init(&video->dma_queue_lock); - ret = media_entity_pads_init(&video->video_dev.entity, - 1, &video->pad); - if (ret < 0) - return ret; - - video_set_drvdata(&video->video_dev, video); - - return 0; -} - -/* vpfe video device register function */ -int vpfe_video_register(struct vpfe_video_device *video, - struct v4l2_device *vdev) -{ - int ret; - - video->video_dev.v4l2_dev = vdev; - - if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - video->video_dev.device_caps = V4L2_CAP_VIDEO_CAPTURE; - else - video->video_dev.device_caps = V4L2_CAP_VIDEO_OUTPUT; - video->video_dev.device_caps |= V4L2_CAP_STREAMING; - ret = video_register_device(&video->video_dev, VFL_TYPE_GRABBER, -1); - if (ret < 0) - pr_err("%s: could not register video device (%d)\n", - __func__, ret); - return ret; -} - -/* vpfe video device unregister function */ -void vpfe_video_unregister(struct vpfe_video_device *video) -{ - if (video_is_registered(&video->video_dev)) { - video_unregister_device(&video->video_dev); - media_entity_cleanup(&video->video_dev.entity); - } -} |