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-rw-r--r--Jenkinsfile52
-rw-r--r--README.md27
-rw-r--r--config/base-aarch64.config23
-rw-r--r--config/foreign-socs.config68
-rw-r--r--kernel-sp12in.repo2
-rw-r--r--kernel-surface.spec45
-rwxr-xr-xmake-sources.sh28
-rw-r--r--patch-order.txt15
-rw-r--r--patches/camera/0027-media-i2c-ov13858-fix-bayer-order-when-mirrored.patch142
-rw-r--r--patches/surface/0016-arm64-dts-qcom-purwa-Microsoft-Surface-Pro-12in-iris-firmware-name.patch32
10 files changed, 52 insertions, 382 deletions
diff --git a/Jenkinsfile b/Jenkinsfile
index 1ab3e47..63e7c34 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -118,31 +118,22 @@ spec:
rpmdev-setuptree
- # The published file names are whatever the spec
+ # The published file name is whatever the spec
# resolves to under the tag's versions, so the two
- # cannot drift. Note the plural: kernel-surface-dtb
- # is a separate package because the main one is
- # installonly and cannot own a path that carries no
- # kernel version. Publishing only the first would
- # leave the kernel unresolvable.
- prefix="s3://${RPM_BUCKET}/fedora/${fedora_version}/aarch64"
- rpm_files=$(rpmspec -q \\
+ # cannot drift. A kernel build is expensive; if this
+ # exact NEVRA is already in the bucket, skip
+ # straight to the metadata.
+ rpm_file=$(rpmspec -q \\
--define "upstream_ver ${UPSTREAM_VER}" \\
--define "patchset_ver ${PATCHSET_VER}" \\
--queryformat '%{NAME}-%{VERSION}-%{RELEASE}.%{ARCH}.rpm\\n' \\
- kernel-surface.spec)
+ kernel-surface.spec | head -n1)
+ dest="s3://${RPM_BUCKET}/fedora/${fedora_version}/aarch64/${rpm_file}"
- # A kernel build is expensive; skip it only when
- # every one of those is already in the bucket.
- skip_build=true
- for rpm_name in ${rpm_files}; do
- if ! aws s3 ls --endpoint-url "${B2_ENDPOINT}" \\
- "${prefix}/${rpm_name}"; then
- skip_build=false
- fi
- done
- if [ "${skip_build}" = true ]; then
- echo "${TAG_NAME} is already published in full, skipping build"
+ skip_build=false
+ if aws s3 ls --endpoint-url "${B2_ENDPOINT}" "${dest}"; then
+ echo "${rpm_file} already published, skipping build"
+ skip_build=true
fi
if [ "${skip_build}" = false ]; then
@@ -155,34 +146,29 @@ spec:
--define '_smp_mflags -j4' \\
kernel-surface.spec
- # kernel-surface-dtb is noarch, so it lands
- # in RPMS/noarch rather than RPMS/aarch64; ask
- # where each one actually is.
- for rpm_name in ${rpm_files}; do
- built=$(find "${HOME}/rpmbuild/RPMS" -type f \\
- -name "${rpm_name}" -print -quit)
- test -n "${built}"
+ built="${HOME}/rpmbuild/RPMS/aarch64/${rpm_file}"
+ test -f "${built}"
- aws s3 cp --endpoint-url "${B2_ENDPOINT}" \\
- "${built}" "${prefix}/${rpm_name}"
- done
+ aws s3 cp --endpoint-url "${B2_ENDPOINT}" \\
+ "${built}" "${dest}"
fi
+ repo_url="s3://${RPM_BUCKET}/fedora/${fedora_version}/aarch64"
repo="${WORKSPACE}/repo"
mkdir -p "${repo}"
aws s3 sync --endpoint-url "${B2_ENDPOINT}" \\
--exclude '*' --include '*.rpm' \\
- "${prefix}/" "${repo}/"
+ "${repo_url}/" "${repo}/"
createrepo_c --update "${repo}"
aws s3 sync --endpoint-url "${B2_ENDPOINT}" \\
--exclude 'repomd.xml*' \\
- "${repo}/repodata/" "${prefix}/repodata/"
+ "${repo}/repodata/" "${repo_url}/repodata/"
aws s3 cp --endpoint-url "${B2_ENDPOINT}" \\
"${repo}/repodata/repomd.xml" \\
- "${prefix}/repodata/repomd.xml"
+ "${repo_url}/repodata/repomd.xml"
# Served next to the repository so that consumers
# can `dnf config-manager --add-repo` the URL.
diff --git a/README.md b/README.md
index bb8fcbd..38cc10e 100644
--- a/README.md
+++ b/README.md
@@ -13,26 +13,6 @@ Used in [Fedora KIWI descriptions, modified by me for Surface Pro 12"](https://s
`vanilla-kernel-*.ebuild` applies them, minus `gpu` (does not exist) and
`rockchip` (irrelevant).
-An entry prefixed with `local:` is not the overlay's, it is `patches/<name>/`
-in this repository. Those carry fixes the overlay has not picked up, and they
-live outside the submodule so that `git submodule update` cannot silently drop
-them. They are listed right after the overlay directory they extend, so the
-same numbering that orders the overlay's series orders these too.
-
-- `patches/camera/0027-media-i2c-ov13858-fix-bayer-order-when-mirrored.patch`
- the rear camera advertises GRBG while the horizontal mirror, which
- `rotation = <180>` turns on, makes it deliver RGGB. Debayering with the wrong
- pattern puts both greens into the red and blue channels, so the picture comes
- out close to monochrome.
-- `patches/surface/0016-arm64-dts-qcom-purwa-Microsoft-Surface-Pro-12in-iris-firmware-name.patch`
- the video codec firmware in linux-firmware is signed with Qualcomm's SecTools
- test key, which this device's TrustZone rejects with `error -22 initializing
- firmware`. Points the iris node at the production-signed build shipped in the
- Windows driver package instead.
-
-Send them upstream to the overlay when they are ready; drop the `local:` entry
-and the directory once the overlay carries them.
-
## Configuration
The starting point is `config/base-aarch64.config`: Fedora's own aarch64
@@ -51,7 +31,7 @@ rpm2archive -n - < kernel-core-*.aarch64.rpm |
If the extraction comes up empty, `rpm -qlp kernel-core-*.aarch64.rpm | grep
config` says whether the package still carries the file at all.
-Four fragments are merged on top with `scripts/kconfig/merge_config.sh`:
+Three fragments are merged on top with `scripts/kconfig/merge_config.sh`:
* `config/surface.config` – the drivers the patch set enables (SAM stack and
its new RTC, CAMSS and the CSI-2 D-PHY, fastrpc, ath12k, AudioReach).
@@ -59,9 +39,6 @@ Four fragments are merged on top with `scripts/kconfig/merge_config.sh`:
and dm-snapshot/overlayfs built in for `dracut`'s `dmsquash-live`, the EFI
stub because GRUB's aarch64 `linux` command loads the kernel as an EFI
application, and xz module compression.
-* `config/foreign-socs.config` – the ARM64 platforms this machine is not.
- Fedora's config enables every platform it supports because a distribution
- kernel has to boot on all of them; this one boots on `qcom,x1p42100` alone.
* `config/no-debug-info.config` – DWARF and BTF off. The package produces no
`-debuginfo` subpackage (`%global debug_package %{nil}`) and strips modules
at install time, so the DWARF was compiled only to be discarded, and it is
@@ -85,7 +62,7 @@ matches the ISO (the project README notes Secure Boot is not available for it).
```bash
dnf config-manager addrepo --from-repofile=\
- https://rpm.sayag.it/kernel-sp12in/fedora/45/kernel-sp12in.repo
+ https://f003.backblazeb2.com/file/dist-sayagit-fedora-rpm/fedora/45/kernel-sp12in.repo
```
## Building
diff --git a/config/base-aarch64.config b/config/base-aarch64.config
index ed863d0..8ccb3a9 100644
--- a/config/base-aarch64.config
+++ b/config/base-aarch64.config
@@ -1,11 +1,10 @@
# Fedora's own aarch64 kernel configuration, used as the starting point for
# this package. Taken verbatim from the config shipped inside
-# kernel-core-7.2.4-300.fc45.aarch64.rpm:
+# kernel-core-7.2.0-61.fc45.aarch64.rpm:
#
# dnf download kernel-core --arch aarch64
-# rpm2archive -n - < kernel-core-*.aarch64.rpm |
-# tar -xO --wildcards '*/modules/*/config' |
-# wl-copy
+# rpm2cpio kernel-core-*.aarch64.rpm |
+# cpio -idm './usr/lib/modules/*/config'
#
# It is vendored rather than downloaded so the build has no dependency on a
# third-party host, and so the base config is reviewable in a diff when it is
@@ -13,11 +12,11 @@
# top of it in %prep; do not edit this file by hand.
#
# Automatically generated file; DO NOT EDIT.
-# Linux/arm64 7.2.4-300.fc45.aarch64 Kernel Configuration
+# Linux/arm64 7.2.0-61.fc45.aarch64 Kernel Configuration
#
-CONFIG_CC_VERSION_TEXT="gcc (GCC) 16.2.1 20260819 (Red Hat 16.2.1-2)"
+CONFIG_CC_VERSION_TEXT="gcc (GCC) 16.1.1 20260703 (Red Hat 16.1.1-4)"
CONFIG_CC_IS_GCC=y
-CONFIG_GCC_VERSION=160201
+CONFIG_GCC_VERSION=160101
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=20285426
@@ -57,7 +56,7 @@ CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_UAPI_HEADER_TEST=y
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
-CONFIG_BUILD_SALT="7.2.4-300.fc45.aarch64"
+CONFIG_BUILD_SALT="7.2.0-61.fc45.aarch64"
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_ZSTD=y
# CONFIG_KERNEL_GZIP is not set
@@ -13230,9 +13229,11 @@ CONFIG_CRYPTO_DEV_SUN4I_SS=m
CONFIG_CRYPTO_DEV_SUN8I_CE=m
# CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG is not set
CONFIG_CRYPTO_DEV_SUN8I_CE_HASH=y
+CONFIG_CRYPTO_DEV_SUN8I_CE_PRNG=y
CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG=y
CONFIG_CRYPTO_DEV_SUN8I_SS=m
# CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG is not set
+CONFIG_CRYPTO_DEV_SUN8I_SS_PRNG=y
CONFIG_CRYPTO_DEV_SUN8I_SS_HASH=y
CONFIG_CRYPTO_DEV_FSL_CAAM_COMMON=m
CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC=m
@@ -14082,3 +14083,9 @@ CONFIG_RUST_OVERFLOW_CHECKS=y
CONFIG_IO_URING_ZCRX=y
CONFIG_IO_URING_BPF=y
CONFIG_IO_URING_BPF_OPS=y
+
+#
+# Red Hat options
+#
+# CONFIG_RHEL_DIFFERENCES is not set
+# end of Red Hat options
diff --git a/config/foreign-socs.config b/config/foreign-socs.config
deleted file mode 100644
index 5926d06..0000000
--- a/config/foreign-socs.config
+++ /dev/null
@@ -1,68 +0,0 @@
-# Config fragment turning off the ARM64 platforms this machine is not.
-#
-# Two platforms are deliberately kept:
-#
-# ARCH_QCOM what this machine is.
-# ARCH_VEXPRESS cheap, and it is the ARM reference/model platform that pulls
-# in the AMBA PrimeCell parts a QEMU `virt` guest expects,
-# which is how an image built from this kernel can be smoke
-# tested without the hardware in hand.
-
-# Allwinner
-# CONFIG_ARCH_SUNXI is not set
-
-# Apple M-series
-# CONFIG_ARCH_APPLE is not set
-
-# Broadcom, including Raspberry Pi
-# CONFIG_ARCH_BCM is not set
-# CONFIG_ARCH_BCM2835 is not set
-
-# Black Sesame
-# CONFIG_ARCH_BST is not set
-
-# CIX
-# CONFIG_ARCH_CIX is not set
-
-# Texas Instruments K3
-# CONFIG_ARCH_K3 is not set
-
-# HiSilicon
-# CONFIG_ARCH_HISI is not set
-
-# Amlogic
-# CONFIG_ARCH_MESON is not set
-
-# Marvell EBU
-# CONFIG_ARCH_MVEBU is not set
-
-# NXP: i.MX, Layerscape and S32
-# CONFIG_ARCH_NXP is not set
-# CONFIG_ARCH_LAYERSCAPE is not set
-# CONFIG_ARCH_MXC is not set
-# CONFIG_ARCH_S32 is not set
-
-# Renesas
-# CONFIG_ARCH_RENESAS is not set
-
-# Rockchip
-# CONFIG_ARCH_ROCKCHIP is not set
-
-# AMD Seattle
-# CONFIG_ARCH_SEATTLE is not set
-
-# Socionext SynQuacer
-# CONFIG_ARCH_SYNQUACER is not set
-
-# NVIDIA Tegra
-# CONFIG_ARCH_TEGRA is not set
-
-# Cavium ThunderX and ThunderX2 servers
-# CONFIG_ARCH_THUNDER is not set
-# CONFIG_ARCH_THUNDER2 is not set
-
-# AppliedMicro X-Gene
-# CONFIG_ARCH_XGENE is not set
-
-# Xilinx ZynqMP
-# CONFIG_ARCH_ZYNQMP is not set
diff --git a/kernel-sp12in.repo b/kernel-sp12in.repo
index fa257a2..226108c 100644
--- a/kernel-sp12in.repo
+++ b/kernel-sp12in.repo
@@ -1,5 +1,5 @@
[kernel-sp12in]
name=kernel-sp12in for Fedora $releasever - $basearch
-baseurl=https://rpm.sayag.it/kernel-sp12in/fedora/$releasever/$basearch/
+baseurl=https://f003.backblazeb2.com/file/dist-sayagit-fedora-rpm/fedora/$releasever/$basearch/
enabled=1
gpgcheck=0
diff --git a/kernel-surface.spec b/kernel-surface.spec
index ee6e132..dc29ae3 100644
--- a/kernel-surface.spec
+++ b/kernel-surface.spec
@@ -12,7 +12,7 @@
# passes them in with --define, which takes precedence -- so keep the plain
# `%%global <name> <value>` shape, which make-sources.sh reads with awk.
%if %{undefined upstream_ver}
-%global upstream_ver 7.2.4
+%global upstream_ver 7.2.3
%endif
# Bumped whenever the patch tarball changes without the upstream version moving.
@@ -56,7 +56,6 @@ Source2: base-aarch64.config
Source3: surface.config
Source4: live-image.config
Source5: no-debug-info.config
-Source6: foreign-socs.config
BuildRequires: bc
BuildRequires: binutils
@@ -72,7 +71,6 @@ BuildRequires: gzip
BuildRequires: hostname
BuildRequires: kmod
BuildRequires: make
-BuildRequires: openssl
BuildRequires: openssl-devel
BuildRequires: patch
BuildRequires: perl-interpreter
@@ -144,18 +142,6 @@ for patchdir in patches/*/; do
done
rm -rf patches
-# The camera series calls devm_phy_get_by_of_node(), which only the phy series
-# adds -- and the overlay's own 7.2.3 ebuild left phy out of its loop while
-# shipping the camera patch that needs it. Applying one without the other
-# compiles for twenty-odd minutes before failing in camss-csiphy.c, so assert
-# the declaration is here while it is still cheap to say so.
-grep -q 'devm_phy_get_by_of_node' include/linux/phy/phy.h || {
- echo "ERROR: include/linux/phy/phy.h does not declare devm_phy_get_by_of_node."
- echo "The camera patches need the phy ones; check phy is in patch-order.txt"
- echo "and that it exists at the pinned overlay commit."
- exit 1
-}
-
# Fold the -rcN suffix into the package release instead of carrying it in
# uname -r, so the module directory is named the way Fedora names it.
sed -i 's/^EXTRAVERSION[[:space:]]*=.*/EXTRAVERSION =/' Makefile
@@ -171,7 +157,7 @@ CONFIG_BUILD_SALT="%{kverrel}"
EOF
ARCH=arm64 scripts/kconfig/merge_config.sh -m -O . \
- .config .release.config %{SOURCE3} %{SOURCE4} %{SOURCE5} %{SOURCE6}
+ .config .release.config %{SOURCE3} %{SOURCE4} %{SOURCE5}
make ARCH=arm64 olddefconfig
# merge_config.sh is only advisory about symbols it could not set, so check the
@@ -193,7 +179,6 @@ test "${kernelrelease}" = "%{kverrel}" || {
}
%build
-export KCFLAGS="-mcpu=oryon-1+nopauth"
%make_build ARCH=arm64 Image modules dtbs
%install
@@ -219,7 +204,7 @@ install -Dm644 System.map \
install -Dm644 .config \
%{buildroot}/usr/lib/modules/%{kverrel}/config
install -Dm644 arch/arm64/boot/dts/qcom/x1p42100-microsoft-sp12in.dtb \
- %{buildroot}/usr/lib/surface-dtb/%{kverrel}/x1p42100-microsoft-sp12in.dtb
+ %{buildroot}/usr/lib/surface-dtb/x1p42100-microsoft-sp12in.dtb
%post
/usr/sbin/depmod -a %{kverrel} || :
@@ -241,34 +226,12 @@ fi
%files
%license COPYING
/usr/lib/modules/%{kverrel}/
-/usr/lib/surface-dtb/%{kverrel}/
+/usr/lib/surface-dtb/x1p42100-microsoft-sp12in.dtb
%ghost %attr(0644,root,root) /boot/config-%{kverrel}
%ghost %attr(0644,root,root) /boot/initramfs-%{kverrel}.img
%ghost %attr(0600,root,root) /boot/System.map-%{kverrel}
%ghost %attr(0644,root,root) /boot/vmlinuz-%{kverrel}
%changelog
-* Wed Sep 09 2026 Saya Andy 7.2.4-2
-- Compile kernel specifically for Oryon v1 instruction set (Snapdragon X1 cpu)
-
-* Tue Sep 08 2026 Saya Andy 7.2.4-1
-- Update Linux kernel from 7.2.3 to 7.2.4
-
-* Mon Sep 07 2026 Saya Andy 7.2.3-4
-- Turn off all the ARM64 platform kernel modules besides qcom and vexpress
- (used in qemu)
-- Fix Bayer order in rear camera resulting in color space shift
-
-* Mon Sep 07 2026 Saya Andy 7.2.3-3
-- Key the /usr/lib/surface-dtb copy of the device tree by kernel version. This
- package is installonly, so an unqualified path there conflicts between two
- installed releases as soon as the device tree they build differs.
-
-* Sun Sep 06 2026 Saya Andy 7.2.3-2
-- Local camera patch: report the right bayer order when mirrored (fixes the
- black-green monochrome output issue)
-- Local surface patch: point iris at the OEM video firmware (fixes error -22
- for video encoding/decoding)
-
* Sun Sep 06 2026 Saya Andy 7.2.3-1
- Initial package: vanilla 7.2.3 with the overlay's Surface Pro 12" patch set
diff --git a/make-sources.sh b/make-sources.sh
index 5c11ee2..b4abb4b 100755
--- a/make-sources.sh
+++ b/make-sources.sh
@@ -3,9 +3,8 @@
# Assemble the rpmbuild sources for kernel-surface.spec:
#
# * kernel-surface-patches-<upstream_ver>-<patchset_ver>.tar.gz, built from the
-# directories listed in patch-order.txt: bare names come from the overlay
-# submodule's sys-kernel/vanilla-kernel/files, "local:" ones from this
-# repository's patches/
+# overlay submodule's sys-kernel/vanilla-kernel/files directories listed in
+# patch-order.txt
# * the upstream kernel tarball
# * the base kernel config and the fragments from config/
#
@@ -33,7 +32,6 @@ spec="${script_dir}/kernel-surface.spec"
order_file="${script_dir}/patch-order.txt"
overlay_dir=${OVERLAY_DIR:-${script_dir}/overlay}
patch_root="${overlay_dir}/sys-kernel/vanilla-kernel/files"
-local_patch_root="${script_dir}/patches"
output_dir=""
skip_download=false
@@ -97,19 +95,7 @@ while read -r dir; do
dir=${dir//[[:space:]]/}
[[ -n ${dir} ]] || continue
- # "local:foo" is patches/foo in this repository, "foo" is the overlay's
- # files/foo. The staging name keeps the prefix so the tarball, and the
- # spec's "Applying ..." log, say where each patch came from.
- if [[ ${dir} == local:* ]]; then
- name=${dir#local:}
- src="${local_patch_root}/${name}"
- label="local-${name}"
- else
- name=${dir}
- src="${patch_root}/${name}"
- label=${name}
- fi
-
+ src="${patch_root}/${dir}"
if [[ ! -d ${src} ]]; then
echo "ERROR: ${src} does not exist (listed in patch-order.txt)" >&2
exit 1
@@ -121,11 +107,11 @@ while read -r dir; do
exit 1
fi
- dest=$(printf '%s/patches/%02d-%s' "${staging}" "${index}" "${label}")
+ dest=$(printf '%s/patches/%02d-%s' "${staging}" "${index}" "${dir}")
mkdir -p "${dest}"
cp "${src}"/*.patch "${dest}/"
- printf ' %02d %-18s %2d patches\n' "${index}" "${label}" "${count}"
+ printf ' %02d %-12s %2d patches\n' "${index}" "${dir}" "${count}"
index=$((index + 1))
total=$((total + count))
done < "${order_file}"
@@ -139,10 +125,10 @@ echo "${tarball} (${index} directories, ${total} patches)"
#--------------------------------------
# Base config and fragments
#--------------------------------------
-for cfg in base-aarch64 surface live-image no-debug-info foreign-socs; do
+for cfg in base-aarch64 surface live-image no-debug-info; do
cp "${script_dir}/config/${cfg}.config" "${output_dir}/${cfg}.config"
done
-echo "${output_dir}/{base-aarch64,surface,live-image,no-debug-info,foreign-socs}.config"
+echo "${output_dir}/{base-aarch64,surface,live-image,no-debug-info}.config"
if [[ ${skip_download} == true ]]; then
exit 0
diff --git a/patch-order.txt b/patch-order.txt
index d47080f..334f847 100644
--- a/patch-order.txt
+++ b/patch-order.txt
@@ -1,13 +1,9 @@
-# Patch directories in application order.
-#
-# A bare name is a directory under the Gentoo overlay's
-# sys-kernel/vanilla-kernel/files. A "local:" prefix means patches/<name> in
-# this repository, for fixes the overlay does not carry yet.
+# Patch directories under the Gentoo overlay's sys-kernel/vanilla-kernel/files,
+# in application order.
#
# This mirrors the loop in vanilla-kernel-7.2.3.ebuild's src_prepare(), minus
-# rockchip (irrelevant), plus phy -- which that ebuild leaves out even though it
-# ships the camera patch that calls devm_phy_get_by_of_node(). Without phy the
-# build dies in camss-csiphy.c; only the 7.3_rc1 ebuild wired phy into its loop.
+# rockchip (irrelevant). There is no phy directory at this overlay commit; the
+# CSI-2 D-PHY driver is part of the camera series here.
other
audio
clk
@@ -19,9 +15,6 @@ video
wifi
input
el2
-phy
camera
-local:camera
irq
surface
-local:surface
diff --git a/patches/camera/0027-media-i2c-ov13858-fix-bayer-order-when-mirrored.patch b/patches/camera/0027-media-i2c-ov13858-fix-bayer-order-when-mirrored.patch
deleted file mode 100644
index d465f8d..0000000
--- a/patches/camera/0027-media-i2c-ov13858-fix-bayer-order-when-mirrored.patch
+++ /dev/null
@@ -1,142 +0,0 @@
-media: i2c: ov13858: report the right bayer order
-
-The driver advertises MEDIA_BUS_FMT_SGRBG10_1X10 unconditionally, but that is
-not what the sensor delivers in any flip state on the Surface Pro 12in. The
-horizontal mirror moves the Bayer phase by one column, and the native order is
-GBRG rather than GRBG, so the two correct codes are GBRG unmirrored and BGGR
-mirrored.
-
-The rear ov13858 is mounted upside down (rotation = <180> in DT), so userspace
-enables both flips to compensate and every frame is then debayered as RGGB
-while the sensor emits BGGR. Red and blue are exchanged: an orange object comes
-out cyan, warm wood comes out blue, while neutrals are unaffected, which is
-what makes it easy to mistake for a white balance problem.
-
-Two measurements on a Surface Pro 12in, from raw frames captured off the CAMSS
-RDI video node. The first locates the green pair by comparing the mean absolute
-difference of the diagonal against the antidiagonal samples of each 2x2 quad,
-the two greens correlating far better than red against blue:
-
- hflip=0 vflip=0 diagonal 8.65 antidiagonal 56.82 -> greens diagonal
- hflip=1 vflip=0 diagonal 56.25 antidiagonal 8.34 -> greens antidiagonal
- hflip=0 vflip=1 diagonal 13.21 antidiagonal 55.94 -> greens diagonal
- hflip=1 vflip=1 diagonal 56.04 antidiagonal 13.16 -> greens antidiagonal
-
-So only the horizontal mirror moves the phase; the ISP Y window offset written
-for VFLIP compensates the vertical one.
-
-That test cannot tell red from blue, because GBRG and GRBG share a green
-diagonal just as BGGR and RGGB share a green antidiagonal. Resolving the
-remaining ambiguity needs colour: a scene of objects with known colour was
-captured in all four states, and the red channel identified as the one whose
-ratio to blue matches the scene. The rejected assignment is the reciprocal, so
-the margin is large:
-
- hflip=0 vflip=0 R/B 1.651 (reciprocal 0.606) -> GBRG
- hflip=0 vflip=1 R/B 1.622 (reciprocal 0.616) -> GBRG
- hflip=1 vflip=0 R/B 1.651 (reciprocal 0.606) -> BGGR
- hflip=1 vflip=1 R/B 1.625 (reciprocal 0.615) -> BGGR
-
-Derive the media bus code from HFLIP and tag the control with
-V4L2_CTRL_FLAG_MODIFY_LAYOUT so userspace knows to renegotiate the format after
-toggling it.
-
-The native order disagreeing with upstream is suspicious in itself. The removal
-of the per-mode {0x3811, 0x04} and {0x3813, 0x05} ISP window offsets in
-"media: i2c: ov13858: add rotate control support", which now writes 1 or 2 into
-those registers from the flip handlers, changes the X parity, and that patch
-also sets BIT(3) of ROTATE_CONTROL when HFLIP is clear while VFLIP sets BIT(4)
-when set. Whether the phase should instead be corrected there is left alone
-here: this patch only reports what the sensor is measured to emit.
-
---- a/drivers/media/i2c/ov13858.c
-+++ b/drivers/media/i2c/ov13858.c
-@@ -1032,6 +1032,7 @@
- struct v4l2_ctrl *vblank;
- struct v4l2_ctrl *hblank;
- struct v4l2_ctrl *exposure;
-+ struct v4l2_ctrl *hflip;
-
- struct clk *img_clk;
- struct gpio_desc *reset_gpio;
-@@ -1222,8 +1223,10 @@
- OV13858_DGTL_GAIN_MIN, OV13858_DGTL_GAIN_MAX,
- OV13858_DGTL_GAIN_STEP, OV13858_DGTL_GAIN_DEFAULT);
-
-- v4l2_ctrl_new_std(ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_HFLIP,
-- 0, 1, 1, 0);
-+ ov13858->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &ov13858_ctrl_ops,
-+ V4L2_CID_HFLIP, 0, 1, 1, 0);
-+ if (ov13858->hflip)
-+ ov13858->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
-
- v4l2_ctrl_new_std(ctrl_hdlr, &ov13858_ctrl_ops, V4L2_CID_VFLIP,
- 0, 1, 1, 0);
-@@ -1258,12 +1261,24 @@
- return ret;
- }
-
--static void ov13858_update_pad_format(const struct ov13858_mode *mode,
-+/*
-+ * Mirroring shifts the Bayer phase by one column, so the native GBRG order
-+ * becomes BGGR. The vertical flip is compensated by the ISP Y window offset
-+ * and leaves the order alone.
-+ */
-+static u32 ov13858_get_format_code(struct ov13858 *ov13858)
-+{
-+ return ov13858->hflip->val ? MEDIA_BUS_FMT_SBGGR10_1X10
-+ : MEDIA_BUS_FMT_SGBRG10_1X10;
-+}
-+
-+static void ov13858_update_pad_format(struct ov13858 *ov13858,
-+ const struct ov13858_mode *mode,
- struct v4l2_mbus_framefmt *fmt)
- {
- fmt->width = mode->width;
- fmt->height = mode->height;
-- fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
-+ fmt->code = ov13858_get_format_code(ov13858);
- fmt->field = V4L2_FIELD_NONE;
- }
-
-@@ -1418,7 +1433,7 @@
- ARRAY_SIZE(supported_modes),
- width, height,
- fmt->format.width, fmt->format.height);
-- ov13858_update_pad_format(mode, &fmt->format);
-+ ov13858_update_pad_format(ov13858, mode, &fmt->format);
- *v4l2_subdev_state_get_format(sd_state, fmt->pad) = fmt->format;
-
- if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
-@@ -1453,11 +1468,11 @@
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_mbus_code_enum *code)
- {
-- /* Only one bayer order(GRBG) is supported */
-+ /* Only one bayer order is supported, which one depends on the mirror */
- if (code->index > 0)
- return -EINVAL;
-
-- code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
-+ code->code = ov13858_get_format_code(to_ov13858(sd));
-
- return 0;
- }
-@@ -1469,7 +1484,7 @@
- if (fse->index >= ARRAY_SIZE(supported_modes))
- return -EINVAL;
-
-- if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
-+ if (fse->code != ov13858_get_format_code(to_ov13858(sd)))
- return -EINVAL;
-
- fse->min_width = supported_modes[fse->index].width;
-@@ -1520,7 +1535,7 @@
- {
- struct ov13858 *ov13858 = to_ov13858(sd);
-
-- ov13858_update_pad_format(ov13858->cur_mode,
-+ ov13858_update_pad_format(ov13858, ov13858->cur_mode,
- v4l2_subdev_state_get_format(sd_state, 0));
-
- return 0;
diff --git a/patches/surface/0016-arm64-dts-qcom-purwa-Microsoft-Surface-Pro-12in-iris-firmware-name.patch b/patches/surface/0016-arm64-dts-qcom-purwa-Microsoft-Surface-Pro-12in-iris-firmware-name.patch
deleted file mode 100644
index b182b0b..0000000
--- a/patches/surface/0016-arm64-dts-qcom-purwa-Microsoft-Surface-Pro-12in-iris-firmware-name.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-arm64: dts: qcom: purwa: Microsoft Surface Pro 12in: point iris at the OEM video firmware
-
-The generic qcom/vpu/vpu30_p1_s7.mbn shipped by linux-firmware is signed with
-the Qualcomm SecTools test key chain ("SECTOOLS SECP384R1 CURVE TEST ROOT" /
-"General Use Test Key (for testing only)"), which the TrustZone on a retail
-Surface Pro 12in refuses:
-
- qcom-iris aa00000.video-codec: error -22 initializing firmware qcom/vpu/vpu30_p1_s7.mbn
- qcom-iris aa00000.video-codec: firmware download failed
- qcom-iris aa00000.video-codec: core init failed
-
-The -22 comes straight out of qcom_scm_pas_init_image() in
-__qcom_mdt_pas_init(), i.e. the image metadata is rejected before anything is
-loaded.
-
-The Windows driver package for this machine carries the same firmware signed
-with the production chain ("QMC Attestation Root CA 6"), in two builds:
-qcvss8380.mbn and qcvss8380_pa.mbn. The _pa one is what loads here. It has an
-identical 7 MiB load span, so it fits the existing video_mem reservation
-unchanged. Point the iris node at it, the same way the board already does for
-the aDSP, cDSP and GPU firmware.
-
---- a/arch/arm64/boot/dts/qcom/x1p42100-microsoft-sp12in.dts
-+++ b/arch/arm64/boot/dts/qcom/x1p42100-microsoft-sp12in.dts
-@@ -1098,6 +1098,7 @@
- };
-
- &iris {
-+ firmware-name = "qcom/x1p42100/Microsoft/Surface12/qcvss8380_pa.mbn";
- status = "okay";
- };
-
generated by cgitext v1.3.1+17 (git 2.54.0) at 2026-09-11 16:18:00 +0000