linux-dev/drivers/media/v4l2-core/Kconfig, branch master

media: Replace dependency on VIDEO_V4L2_SUBDEV_API with select

2022-07-15T14:19:48Z

The VIDEO_V4L2_SUBDEV_API Kconfig symbol is mostly selected automatically, with a a handful of drivers still using it as a dependency. Fix them to use selection, and drop the symbol title text to not expose it for manual selection. Signed-off-by: Laurent Pinchart Reviewed-by: Ezequiel Garcia Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

media: Kconfig: cleanup VIDEO_DEV dependencies

2022-03-18T04:58:35Z

media Kconfig has two entries associated to V4L API: VIDEO_DEV and VIDEO_V4L2. On Kernel 2.6.x, there were two V4L APIs, each one with its own flag. VIDEO_DEV were meant to: 1) enable Video4Linux and make its Kconfig options to appear; 2) it makes the Kernel build the V4L core. while VIDEO_V4L2 where used to distinguish between drivers that implement the newer API and drivers that implemented the former one. With time, such meaning changed, specially after the removal of all V4L version 1 drivers. At the current implementation, VIDEO_DEV only does (1): it enables the media options related to V4L, that now has: menu "Video4Linux options" visible if VIDEO_DEV source "drivers/media/v4l2-core/Kconfig" endmenu but it doesn't affect anymore the V4L core drivers. The rationale is that the V4L2 core has a "soft" dependency at the I2C bus, and now requires to select a number of other Kconfig options: config VIDEO_V4L2 tristate depends on (I2C || I2C=n) && VIDEO_DEV select RATIONAL select VIDEOBUF2_V4L2 if VIDEOBUF2_CORE default (I2C || I2C=n) && VIDEO_DEV In the past, merging them would be tricky, but it seems that it is now possible to merge those symbols, in order to simplify V4L dependencies. Let's keep VIDEO_DEV, as this one is used on some make *defconfig configurations. Suggested-by: Laurent Pinchart Reviewed-by: Laurent Pinchart Reviewed-by: Jacopo Mondi Reviewed-by: Neil Armstrong # for meson-vdec & meson-ge2d Acked-by: Andrzej Pietrasiewicz Acked-by: Łukasz Stelmach Signed-off-by: Mauro Carvalho Chehab

media: Add VP9 v4l2 library

2021-11-22T07:47:13Z

Provide code common to vp9 drivers in one central location. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: v4l: async, fwnode: Improve module organisation

2021-06-02T09:46:27Z

The V4L2 async framework is generally used with the V4L2 fwnode, which also depends on the former. There are a few exceptions but they are relatively few. At the same time there is a vast number of systems that need videodev module, but have no use for v4l2-async that's now part of videodev. In order to improve, split the v4l2-async into its own module. Selecting V4L2_FWNODE also selects V4L2_ASYNC. This also moves the initialisation of the debufs entries for async subdevs to loading of the v4l2-async module. The directory is named as "v4l2-async". Signed-off-by: Sakari Ailus Reviewed-by: Ezequiel Garcia Signed-off-by: Mauro Carvalho Chehab

media: v4l2-core: Add helpers to build the H264 P/B0/B1 reflists

2020-04-21T11:46:40Z

Building those list is a standard procedure described in section '8.2.4 Decoding process for reference picture lists construction' of the H264 specification. We already have 2 drivers needing the same logic (hantro and rkvdec) and I suspect we will soon have more. Let's provide generic helpers to create those lists. Signed-off-by: Boris Brezillon Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: add v4l2 JPEG helpers

2020-04-14T09:47:47Z

Add helpers for JPEG header parsing. They allow both scanning for marker segment positions and later parsing the segments individually, as required by s5p-jpeg, as well as parsing all headers in one go, as required by coda-vpu. The frame header is always parsed, as basically all decoders are interested in width, height, and number of components. For convenience, the JPEG chroma subsampling factors are decoded into a v4l2_jpeg_chroma_subsampling enum. Only baseline and extended sequential DCT encoded JPEGs with 8-bit or 12-bit precision with up to four components are supported. Signed-off-by: Philipp Zabel Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: Kconfig: move V4L2 subdev API to v4l2-core/Kconfig

2020-04-14T08:29:05Z

This option is part of V4L2 API extra functionality set. Move it to be at the v4l2-core/Kconfig, where it belongs, cleaning the main Kconfig file. Signed-off-by: Mauro Carvalho Chehab

media: pci: move VIDEO_PCI_SKELETON to a different Kconfig

2020-04-14T08:29:04Z

The V4L2 PCI skeleton is not part of the V4L2 core. Move it to appear together with the other PCI drivers, at the end, as this is something that normal users don't even need to bother. Signed-off-by: Mauro Carvalho Chehab

media: v4l2-core: move i2c helpers out of v4l2-common.c

2019-08-26T13:50:48Z

Separate the i2c helpers to v4l2-i2c.c, in order to get rid of the ifdefery. No functional changes intended, this is just a cosmetic change to organize the code better. Given I2C is a tristate symbol, a hidden boolean symbol is introduced, to make the conditional build easier. Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

Merge tag 'v5.2-rc2' into patchwork

2019-05-28T15:21:51Z

Merge back from upstream into media tree, as there are some patches merged upstream that has pontential of causing conflicts (one actually rised a conflict already). Linux 5.2-rc2 * tag 'v5.2-rc2': (377 commits) Linux 5.2-rc2 random: fix soft lockup when trying to read from an uninitialized blocking pool tracing: Silence GCC 9 array bounds warning ext4: fix dcache lookup of !casefolded directories locking/lock_events: Use this_cpu_add() when necessary KVM: x86: fix return value for reserved EFER tools/kvm_stat: fix fields filter for child events KVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard kvm: selftests: aarch64: compile with warnings on kvm: selftests: aarch64: fix default vm mode kvm: selftests: aarch64: dirty_log_test: fix unaligned memslot size KVM: s390: fix memory slot handling for KVM_SET_USER_MEMORY_REGION KVM: x86/pmu: do not mask the value that is written to fixed PMUs KVM: x86/pmu: mask the result of rdpmc according to the width of the counters x86/kvm/pmu: Set AMD's virt PMU version to 1 KVM: x86: do not spam dmesg with VMCS/VMCB dumps kvm: Check irqchip mode before assign irqfd kvm: svm/avic: fix off-by-one in checking host APIC ID KVM: selftests: do not blindly clobber registers in guest asm KVM: selftests: Remove duplicated TEST_ASSERT in hyperv_cpuid.c ...