bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 163 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0303-staging-bcm2835-codec-add-media-controller-support.patch b/target/linux/bcm27xx/patches-5.4/950-0303-staging-bcm2835-codec-add-media-controller-support.patch
new file mode 100644
index 0000000000..f0ac32340c
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0303-staging-bcm2835-codec-add-media-controller-support.patch
@@ -0,0 +1,163 @@
+From 4d066da23979b8de03b5915388136be6e293600f 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;
+ }
+