Changes in Makefile

e3185e1d - media: staging: media: Add support for the Allwinner A31 ISP

Thu, 03 Nov 2022 16:37:14 +0000

media: staging: media: Add support for the Allwinner A31 ISPSome Allwinner platforms come with an Image Signal Processor, whichsupports various features in order to enhance and transform datareceived by image sensors into good-looking pictures. In most cases,the data is raw bayer, which gets internally converted to RGB andfinally YUV, which is what the hardware produces.This driver supports ISPs that are similar to the A31 ISP, which wasthe first standalone ISP found in Allwinner platforms. Simpler ISPblocks were found in the A10 and A20, where they are tied to a CSIcontroller. Newer generations of Allwinner SoCs (starting with theH6, H616, etc) come with a new camera subsystem and revised ISP.Even though these previous and next-generation ISPs are somewhatsimilar to the A31 ISP, they have enough significant differences tobe out of the scope of this driver.While the ISP supports many features, including 3A and manyenhancement blocks, this implementation is limited to the following:- V3s (V3/S3) platform support;- Bayer media bus formats as input;- Semi-planar YUV (NV12/NV21) as output;- Debayering with per-component gain and offset configuration;- 2D noise filtering with configurable coefficients.Since many features are missing from the associated uAPI, the driveris aimed to integrate staging until all features are properlydescribed.On the technical side, it uses the v4l2 and media controller APIs,with a video node for capture, a processor subdev and a video nodefor parameters submission. A specific uAPI structure and associatedv4l2 meta format are used to configure parameters of the supportedmodules.One particular thing about the hardware is that configuration formodule registers needs to be stored in a DMA buffer and gets copiedto actual registers by the hardware at the next vsync, when instructedby a flag. This is handled by the "state" mechanism in the driver.Signed-off-by: Paul Kocialkowski Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab List of files: /linux-6.15/drivers/staging/media/sunxi/Makefile

97ed8eab - staging: add missing SPDX lines to Makefile files

Tue, 02 Apr 2019 10:31:49 +0000

staging: add missing SPDX lines to Makefile filesThere are a few remaining drivers/staging/*/Makefile files that do nothave SPDX identifiers in them. Add the correct GPL-2.0 identifier tothem to make scanning tools happy.Reviewed-by: Mukesh Ojha Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/staging/media/sunxi/Makefile

50e76151 - media: platform: Add Cedrus VPU decoder driver

Thu, 13 Sep 2018 14:51:55 +0000

media: platform: Add Cedrus VPU decoder driverThis introduces the Cedrus VPU driver that supports the VPU found inAllwinner SoCs, also known as Video Engine. It is implemented througha V4L2 M2M decoder device and a media device (used for media requests).So far, it only supports MPEG-2 decoding.Since this VPU is stateless, synchronization with media requests isrequired in order to ensure consistency between frame headers thatcontain metadata about the frame to process and the raw slice data thatis used to generate the frame.This driver was made possible thanks to the long-standing effortcarried out by the linux-sunxi community in the interest of reverseengineering, documenting and implementing support for the Allwinner VPU.Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard Signed-off-by: Hans Verkuil [hans.verkuil@cisco.com: dropped obsolete MEDIA_REQUEST_API from Kconfig]Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab List of files: /linux-6.15/drivers/staging/media/sunxi/Makefile