virtualization: Add virtio-video driver as external module.

This driver should conform WIP spec v3 [1] with some updates for spec v4
[2], and, some unspecified features such as VIRTIO_VIDEO_DEVICE_CAMERA.

Imported from internal OpenSynergy's revision:

  bcc33b6b9e0156b381a70c54d2df02c57b63d270

Kernel was configured with necessary features for this driver:

  enable MEDIA_SUPPORT
  disable MEDIA_SUBDRV_AUTOSELECT
  enable MEDIA_PLATFORM_SUPPORT
  enable VIDEO_VIRTIO

Keep driver as an external module to simplify future updates.

[1]: https://lists.oasis-open.org/archives/virtio-dev/202002/msg00002.html
[2]: https://lists.oasis-open.org/archives/virtio-dev/202006/msg00072.html

Bug-AGL: SPEC-4148
Change-Id: Iea339194b22443f67b3e2ffddca84118357a2f15
Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@opensynergy.com>

2 files changed, 193 insertions, 0 deletions

diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/0001-drivers-media-Add-config-option-for-virtio-video.patch b/meta-egvirt/recipes-kernel/linux/linux-yocto/0001-drivers-media-Add-config-option-for-virtio-video.patch
new file mode 100644
index 00000000..ede061e6
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/0001-drivers-media-Add-config-option-for-virtio-video.patch
@@ -0,0 +1,33 @@
+From 162f03095b94fe1580653c96094e50ba827f4c0f Mon Sep 17 00:00:00 2001
+From: Vasyl Vavrychuk <vasyl.vavrychuk@opensynergy.com>
+Date: Thu, 3 Jun 2021 07:44:30 +0200
+Subject: [PATCH] drivers/media: Add config option for virtio video.
+
+virtio video driver is implemented as out of tree kernel module, but it
+depends on some of kernel functionality which can not be enabled
+explicitly via config (e.g. VIDEOBUF2_DMA_CONTIG).
+---
+ drivers/media/Kconfig | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig
+index a6d073f2e036..a6146edb0ea3 100644
+--- a/drivers/media/Kconfig
++++ b/drivers/media/Kconfig
+@@ -235,6 +235,16 @@ endif
+ 
+ source "drivers/media/firewire/Kconfig"
+ 
++config VIDEO_VIRTIO
++	tristate "Virtio video driver"
++	depends on VIDEO_V4L2
++	select MEDIA_CONTROLLER
++	select VIDEOBUF2_DMA_CONTIG
++	select VIDEOBUF2_DMA_SG
++	select V4L2_MEM2MEM_DEV
++	help
++	  This is the virtual video driver for virtio. Say Y or M.
++
+ endmenu
+ 
+ #
diff --git a/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio_video.cfg b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio_video.cfg
new file mode 100644
index 00000000..252bcfeb
--- /dev/null
+++ b/meta-egvirt/recipes-kernel/linux/linux-yocto/virtio_video.cfg
@@ -0,0 +1,160 @@
+CONFIG_FRAME_VECTOR=y
+CONFIG_MEDIA_SUPPORT=y
+CONFIG_MEDIA_SUPPORT_FILTER=y
+# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set
+
+#
+# Media device types
+#
+# CONFIG_MEDIA_CAMERA_SUPPORT is not set
+# CONFIG_MEDIA_ANALOG_TV_SUPPORT is not set
+# CONFIG_MEDIA_DIGITAL_TV_SUPPORT is not set
+# CONFIG_MEDIA_RADIO_SUPPORT is not set
+# CONFIG_MEDIA_SDR_SUPPORT is not set
+CONFIG_MEDIA_PLATFORM_SUPPORT=y
+# CONFIG_MEDIA_TEST_SUPPORT is not set
+# end of Media device types
+
+CONFIG_VIDEO_DEV=y
+CONFIG_MEDIA_CONTROLLER=y
+
+#
+# Video4Linux options
+#
+CONFIG_VIDEO_V4L2=y
+CONFIG_VIDEO_V4L2_I2C=y
+# CONFIG_VIDEO_V4L2_SUBDEV_API is not set
+# CONFIG_VIDEO_ADV_DEBUG is not set
+# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
+CONFIG_V4L2_MEM2MEM_DEV=y
+# end of Video4Linux options
+
+#
+# Media controller options
+#
+# end of Media controller options
+
+#
+# Media drivers
+#
+
+#
+# Drivers filtered as selected at 'Filter media drivers'
+#
+CONFIG_VIDEOBUF2_CORE=y
+CONFIG_VIDEOBUF2_V4L2=y
+CONFIG_VIDEOBUF2_MEMOPS=y
+CONFIG_VIDEOBUF2_DMA_CONTIG=y
+CONFIG_VIDEOBUF2_DMA_SG=y
+# CONFIG_V4L_PLATFORM_DRIVERS is not set
+# CONFIG_V4L_MEM2MEM_DRIVERS is not set
+CONFIG_VIDEO_VIRTIO=y
+# end of Media drivers
+
+#
+# Media ancillary drivers
+#
+
+#
+# Audio decoders, processors and mixers
+#
+# CONFIG_VIDEO_TVAUDIO is not set
+# CONFIG_VIDEO_TDA7432 is not set
+# CONFIG_VIDEO_TDA9840 is not set
+# CONFIG_VIDEO_TEA6415C is not set
+# CONFIG_VIDEO_TEA6420 is not set
+# CONFIG_VIDEO_MSP3400 is not set
+# CONFIG_VIDEO_CS3308 is not set
+# CONFIG_VIDEO_CS5345 is not set
+# CONFIG_VIDEO_CS53L32A is not set
+# CONFIG_VIDEO_TLV320AIC23B is not set
+# CONFIG_VIDEO_UDA1342 is not set
+# CONFIG_VIDEO_WM8775 is not set
+# CONFIG_VIDEO_WM8739 is not set
+# CONFIG_VIDEO_VP27SMPX is not set
+# CONFIG_VIDEO_SONY_BTF_MPX is not set
+# end of Audio decoders, processors and mixers
+
+#
+# RDS decoders
+#
+# CONFIG_VIDEO_SAA6588 is not set
+# end of RDS decoders
+
+#
+# Video decoders
+#
+# CONFIG_VIDEO_ADV7183 is not set
+# CONFIG_VIDEO_ADV748X is not set
+# CONFIG_VIDEO_ADV7842 is not set
+# CONFIG_VIDEO_BT819 is not set
+# CONFIG_VIDEO_BT856 is not set
+# CONFIG_VIDEO_BT866 is not set
+# CONFIG_VIDEO_KS0127 is not set
+# CONFIG_VIDEO_ML86V7667 is not set
+# CONFIG_VIDEO_SAA7110 is not set
+# CONFIG_VIDEO_SAA711X is not set
+# CONFIG_VIDEO_TC358743 is not set
+# CONFIG_VIDEO_TVP514X is not set
+# CONFIG_VIDEO_TVP5150 is not set
+# CONFIG_VIDEO_TVP7002 is not set
+# CONFIG_VIDEO_TW2804 is not set
+# CONFIG_VIDEO_TW9903 is not set
+# CONFIG_VIDEO_TW9906 is not set
+# CONFIG_VIDEO_TW9910 is not set
+# CONFIG_VIDEO_VPX3220 is not set
+
+#
+# Video and audio decoders
+#
+# CONFIG_VIDEO_SAA717X is not set
+# CONFIG_VIDEO_CX25840 is not set
+# end of Video decoders
+
+#
+# Video encoders
+#
+# CONFIG_VIDEO_SAA7127 is not set
+# CONFIG_VIDEO_SAA7185 is not set
+# CONFIG_VIDEO_ADV7170 is not set
+# CONFIG_VIDEO_ADV7175 is not set
+# CONFIG_VIDEO_ADV7343 is not set
+# CONFIG_VIDEO_ADV7393 is not set
+# CONFIG_VIDEO_ADV7511 is not set
+# CONFIG_VIDEO_AD9389B is not set
+# CONFIG_VIDEO_AK881X is not set
+# CONFIG_VIDEO_THS8200 is not set
+# end of Video encoders
+
+#
+# Video improvement chips
+#
+# CONFIG_VIDEO_UPD64031A is not set
+# CONFIG_VIDEO_UPD64083 is not set
+# end of Video improvement chips
+
+#
+# Audio/Video compression chips
+#
+# CONFIG_VIDEO_SAA6752HS is not set
+# end of Audio/Video compression chips
+
+#
+# SDR tuner chips
+#
+# end of SDR tuner chips
+
+#
+# Miscellaneous helper chips
+#
+# CONFIG_VIDEO_THS7303 is not set
+# CONFIG_VIDEO_M52790 is not set
+# CONFIG_VIDEO_I2C is not set
+# CONFIG_VIDEO_ST_MIPID02 is not set
+# end of Miscellaneous helper chips
+
+#
+# SPI helper chips
+#
+# end of SPI helper chips
+# end of Media ancillary drivers