+++ /dev/null
-From d1ceb85b7c6c7c3eec8b424e0172c29e93a570f2 Mon Sep 17 00:00:00 2001
-From: Kieran Bingham <kieran.bingham@ideasonboard.com>
-Date: Wed, 20 Mar 2019 12:54:15 +0000
-Subject: [PATCH] staging: bcm2835-codec: add media controller support
-
-Provide a single media device to contain all of the bcm2835_codec
-devices created.
-
-Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
----
- .../vc04_services/bcm2835-codec/Kconfig | 2 +-
- .../bcm2835-codec/bcm2835-v4l2-codec.c | 41 +++++++++++++++++--
- 2 files changed, 38 insertions(+), 5 deletions(-)
-
---- a/drivers/staging/vc04_services/bcm2835-codec/Kconfig
-+++ b/drivers/staging/vc04_services/bcm2835-codec/Kconfig
-@@ -1,6 +1,6 @@
- config VIDEO_CODEC_BCM2835
- tristate "BCM2835 Video codec support"
-- depends on MEDIA_SUPPORT
-+ depends on MEDIA_SUPPORT && MEDIA_CONTROLLER
- depends on VIDEO_V4L2 && (ARCH_BCM2835 || COMPILE_TEST)
- select BCM2835_VCHIQ_MMAL
- select VIDEOBUF2_DMA_CONTIG
---- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
-+++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
-@@ -458,6 +458,7 @@ struct bcm2835_codec_ctx {
-
- struct bcm2835_codec_driver {
- struct platform_device *pdev;
-+ struct media_device mdev;
-
- struct bcm2835_codec_dev *encode;
- struct bcm2835_codec_dev *decode;
-@@ -2596,6 +2597,7 @@ static int bcm2835_codec_create(struct b
- struct platform_device *pdev = drv->pdev;
- struct bcm2835_codec_dev *dev;
- struct video_device *vfd;
-+ int function;
- int video_nr;
- int ret;
-
-@@ -2615,18 +2617,21 @@ static int bcm2835_codec_create(struct b
- if (ret)
- goto vchiq_finalise;
-
-- ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
-- if (ret)
-- goto vchiq_finalise;
--
- atomic_set(&dev->num_inst, 0);
- mutex_init(&dev->dev_mutex);
-
-+ /* Initialise the video device */
- dev->vfd = bcm2835_codec_videodev;
-+
- vfd = &dev->vfd;
- vfd->lock = &dev->dev_mutex;
- vfd->v4l2_dev = &dev->v4l2_dev;
- vfd->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
-+ vfd->v4l2_dev->mdev = &drv->mdev;
-+
-+ ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
-+ if (ret)
-+ goto vchiq_finalise;
-
- switch (role) {
- case DECODE:
-@@ -2634,11 +2639,13 @@ static int bcm2835_codec_create(struct b
- v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
- v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
- v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
-+ function = MEDIA_ENT_F_PROC_VIDEO_DECODER;
- video_nr = decode_video_nr;
- break;
- case ENCODE:
- v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
- v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
-+ function = MEDIA_ENT_F_PROC_VIDEO_ENCODER;
- video_nr = encode_video_nr;
- break;
- case ISP:
-@@ -2648,6 +2655,7 @@ static int bcm2835_codec_create(struct b
- v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
- v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
- v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
-+ function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
- video_nr = isp_video_nr;
- break;
- default:
-@@ -2676,6 +2684,10 @@ static int bcm2835_codec_create(struct b
- goto err_m2m;
- }
-
-+ ret = v4l2_m2m_register_media_controller(dev->m2m_dev, vfd, function);
-+ if (ret)
-+ goto err_m2m;
-+
- v4l2_info(&dev->v4l2_dev, "Loaded V4L2 %s\n",
- roles[role]);
- return 0;
-@@ -2697,6 +2709,7 @@ static int bcm2835_codec_destroy(struct
-
- v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME ", %s\n",
- roles[dev->role]);
-+ v4l2_m2m_unregister_media_controller(dev->m2m_dev);
- v4l2_m2m_release(dev->m2m_dev);
- video_unregister_device(&dev->vfd);
- v4l2_device_unregister(&dev->v4l2_dev);
-@@ -2708,6 +2721,7 @@ static int bcm2835_codec_destroy(struct
- static int bcm2835_codec_probe(struct platform_device *pdev)
- {
- struct bcm2835_codec_driver *drv;
-+ struct media_device *mdev;
- int ret = 0;
-
- drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
-@@ -2715,6 +2729,17 @@ static int bcm2835_codec_probe(struct pl
- return -ENOMEM;
-
- drv->pdev = pdev;
-+ mdev = &drv->mdev;
-+ mdev->dev = &pdev->dev;
-+
-+ strscpy(mdev->model, bcm2835_codec_videodev.name, sizeof(mdev->model));
-+ strscpy(mdev->serial, "0000", sizeof(mdev->serial));
-+ snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
-+ pdev->name);
-+
-+ /* This should return the vgencmd version information or such .. */
-+ mdev->hw_revision = 1;
-+ media_device_init(mdev);
-
- ret = bcm2835_codec_create(drv, &drv->decode, DECODE);
- if (ret)
-@@ -2728,6 +2753,10 @@ static int bcm2835_codec_probe(struct pl
- if (ret)
- goto out;
-
-+ /* Register the media device node */
-+ if (media_device_register(mdev) < 0)
-+ goto out;
-+
- platform_set_drvdata(pdev, drv);
-
- return 0;
-@@ -2748,12 +2777,16 @@ static int bcm2835_codec_remove(struct p
- {
- struct bcm2835_codec_driver *drv = platform_get_drvdata(pdev);
-
-+ media_device_unregister(&drv->mdev);
-+
- bcm2835_codec_destroy(drv->isp);
-
- bcm2835_codec_destroy(drv->encode);
-
- bcm2835_codec_destroy(drv->decode);
-
-+ media_device_cleanup(&drv->mdev);
-+
- return 0;
- }
-
projects / openwrt / staging / dedeckeh.git / blobdiff