diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0688-media-bcm2835-unicam-add-media-controller-support.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0688-media-bcm2835-unicam-add-media-controller-support.patch | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0688-media-bcm2835-unicam-add-media-controller-support.patch b/target/linux/brcm2708/patches-4.19/950-0688-media-bcm2835-unicam-add-media-controller-support.patch new file mode 100644 index 0000000000..e84721258d --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0688-media-bcm2835-unicam-add-media-controller-support.patch @@ -0,0 +1,128 @@ +From 06cd9857f8faa63321506a75988c475906a32970 Mon Sep 17 00:00:00 2001 +From: Kieran Bingham <kieran.bingham@ideasonboard.com> +Date: Wed, 20 Mar 2019 12:54:47 +0000 +Subject: [PATCH] media: bcm2835: unicam: add media controller support + +Add a media controller device node to represent the Unicam device. +The attached sensor will be automatically added to the media graph by +V4L2 core. + +Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> +--- + drivers/media/platform/bcm2835/Kconfig | 2 +- + .../media/platform/bcm2835/bcm2835-unicam.c | 46 ++++++++++++++++++- + 2 files changed, 45 insertions(+), 3 deletions(-) + +--- a/drivers/media/platform/bcm2835/Kconfig ++++ b/drivers/media/platform/bcm2835/Kconfig +@@ -2,7 +2,7 @@ + + config VIDEO_BCM2835_UNICAM + tristate "Broadcom BCM2835 Unicam video capture driver" +- depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API ++ depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && MEDIA_CONTROLLER + depends on ARCH_BCM2835 || COMPILE_TEST + select VIDEOBUF2_DMA_CONTIG + select V4L2_FWNODE +--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c ++++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c +@@ -314,6 +314,9 @@ struct unicam_device { + struct clk *clock; + /* V4l2 device */ + struct v4l2_device v4l2_dev; ++ struct media_device mdev; ++ struct media_pad pad; ++ + /* parent device */ + struct platform_device *pdev; + /* subdevice async Notifier */ +@@ -1912,6 +1915,8 @@ static int unicam_probe_complete(struct + unicam->v4l2_dev.ctrl_handler = NULL; + + video_set_drvdata(vdev, unicam); ++ vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT; ++ + ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); + if (ret) { + unicam_err(unicam, "Unable to register video device.\n"); +@@ -1953,6 +1958,16 @@ static int unicam_probe_complete(struct + return ret; + } + ++ ret = media_create_pad_link(&unicam->sensor->entity, 0, ++ &unicam->video_dev.entity, 0, ++ MEDIA_LNK_FL_ENABLED | ++ MEDIA_LNK_FL_IMMUTABLE); ++ if (ret) { ++ unicam_err(unicam, "Unable to create pad links.\n"); ++ video_unregister_device(&unicam->video_dev); ++ return ret; ++ } ++ + return 0; + } + +@@ -2155,18 +2170,38 @@ static int unicam_probe(struct platform_ + return -EINVAL; + } + ++ unicam->mdev.dev = &pdev->dev; ++ strscpy(unicam->mdev.model, UNICAM_MODULE_NAME, ++ sizeof(unicam->mdev.model)); ++ strscpy(unicam->mdev.serial, "", sizeof(unicam->mdev.serial)); ++ snprintf(unicam->mdev.bus_info, sizeof(unicam->mdev.bus_info), ++ "platform:%s", pdev->name); ++ unicam->mdev.hw_revision = 1; ++ ++ media_entity_pads_init(&unicam->video_dev.entity, 1, &unicam->pad); ++ media_device_init(&unicam->mdev); ++ ++ unicam->v4l2_dev.mdev = &unicam->mdev; ++ + ret = v4l2_device_register(&pdev->dev, &unicam->v4l2_dev); + if (ret) { + unicam_err(unicam, + "Unable to register v4l2 device.\n"); +- return ret; ++ goto media_cleanup; ++ } ++ ++ ret = media_device_register(&unicam->mdev); ++ if (ret < 0) { ++ unicam_err(unicam, ++ "Unable to register media-controller device.\n"); ++ goto probe_out_v4l2_unregister; + } + + /* Reserve space for the controls */ + hdl = &unicam->ctrl_handler; + ret = v4l2_ctrl_handler_init(hdl, 16); + if (ret < 0) +- goto probe_out_v4l2_unregister; ++ goto media_unregister; + unicam->v4l2_dev.ctrl_handler = hdl; + + /* set the driver data in platform device */ +@@ -2185,8 +2220,13 @@ static int unicam_probe(struct platform_ + + free_hdl: + v4l2_ctrl_handler_free(hdl); ++media_unregister: ++ media_device_unregister(&unicam->mdev); + probe_out_v4l2_unregister: + v4l2_device_unregister(&unicam->v4l2_dev); ++media_cleanup: ++ media_device_cleanup(&unicam->mdev); ++ + return ret; + } + +@@ -2204,6 +2244,8 @@ static int unicam_remove(struct platform + video_unregister_device(&unicam->video_dev); + if (unicam->sensor_config) + v4l2_subdev_free_pad_config(unicam->sensor_config); ++ media_device_unregister(&unicam->mdev); ++ media_device_cleanup(&unicam->mdev); + + return 0; + } |