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2025-05-21vt: move glyph determination to a separate functionNicolas Pitre
No logical changes. Make it easier for enhancements to come. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Link: https://lore.kernel.org/r/20250507141535.40655-4-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21vt: make sure displayed double-width characters are remembered as suchNicolas Pitre
And to do so we ensure the Unicode screen buffer is initialized when double-width characters are encountered. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Link: https://lore.kernel.org/r/20250507141535.40655-3-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21vt: ucs.c: fix misappropriate in_range() usageNicolas Pitre
The in_range() helper accepts a start and a length, not a start and an end. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250507141535.40655-2-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21serial: max3100: Replace open-coded parity calculation with parity8()Kuan-Wei Chiu
Refactor parity calculations to use the standard parity8() helper. This change eliminates redundant implementations. Co-developed-by: Yu-Chun Lin <eleanor15x@gmail.com> Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com> Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Link: https://lore.kernel.org/r/20250515081311.775559-1-visitorckw@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: 8250_omap: Drop redundant propertiesKrzysztof Kozlowski
The binding references in-kernel serial.yaml, so there is no need to explicitly list its properties. Note that rts-gpio is also redundant because DTS should be simply converted to -gpios variants. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20250514125127.56149-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert socionext,milbeaut-usio-uart to DT schemaRob Herring (Arm)
Convert the Socionext Milbeaut UART binding to DT schema. It is a straight-forward conversion. Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://lore.kernel.org/r/20250507154924.1602842-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert microchip,pic32mzda-uart to DT schemaRob Herring (Arm)
Convert the Microchip PIC32 UART binding to DT schema. The binding was unclear there are 3 interrupts. The functions were determined from the driver. The 'cts-gpios' property is covered by serial.yaml schema. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20250507154937.1603190-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert arm,sbsa-uart to DT schemaRob Herring (Arm)
Convert the Arm SBSA UART binding to DT schema. It is a straight-forward conversion. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Reviewed-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Link: https://lore.kernel.org/r/20250506220016.2545637-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert snps,arc-uart to DT schemaRob Herring (Arm)
Convert the Synopsys ARC UART binding to DT schema. Drop the "aliases" portion which is not relevant to this schema. Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://lore.kernel.org/r/20250507154909.1602497-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert marvell,armada-3700-uart to DT schemaRob Herring (Arm)
Convert the Marvell Armada-3700 UART binding to DT schema. It is a straight-forward conversion. Drop the long deprecated single interrupt support. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://lore.kernel.org/r/20250507154408.1595932-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert lantiq,asc to DT schemaRob Herring (Arm)
Convert the Lantiq SoC ASC UART binding to DT schema. There are no such clock identifier defines nor a user with clocks, so drop the example with clocks. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Reviewed-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20250506220029.2546179-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert cirrus,ep7209-uart to DT schemaRob Herring (Arm)
Convert the Cirrus EP7209 UART binding to DT schema. There is no user of "cirrus,ep7312-uart" other than the example, so drop it. Drop the "aliases" node part as it is not relevant to the schema. The modem control GPIOs are covered by the serial.yaml schema and don't have to be listed in the schema. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Reviewed-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20250506220021.2545820-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert arm,mps2-uart to DT schemaRob Herring (Arm)
Convert the Arm MPS2 UART binding to DT schema. It is a straight-forward conversion. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20250506220012.2545470-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert nxp,lpc3220-hsuart to DT schemaRob Herring (Arm)
Convert the NXP LPC3220 HS UART binding to DT schema. It is a straight-forward conversion. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Link: https://lore.kernel.org/r/20250506220048.2546915-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: Convert cnxt,cx92755-usart to DT schemaRob Herring (Arm)
Convert the Conexant Digicolor USART binding to DT schema. It is a straight-forward conversion. Signed-off-by: "Rob Herring (Arm)" <robh@kernel.org> Acked-by: Baruch Siach <baruch@tkos.co.il> Link: https://lore.kernel.org/r/20250506220025.2545995-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21serial: jsm: fix NPE during jsm_uart_port_initDustin Lundquist
No device was set which caused serial_base_ctrl_add to crash. BUG: kernel NULL pointer dereference, address: 0000000000000050 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 16 UID: 0 PID: 368 Comm: (udev-worker) Not tainted 6.12.25-amd64 #1 Debian 6.12.25-1 RIP: 0010:serial_base_ctrl_add+0x96/0x120 Call Trace: <TASK> serial_core_register_port+0x1a0/0x580 ? __setup_irq+0x39c/0x660 ? __kmalloc_cache_noprof+0x111/0x310 jsm_uart_port_init+0xe8/0x180 [jsm] jsm_probe_one+0x1f4/0x410 [jsm] local_pci_probe+0x42/0x90 pci_device_probe+0x22f/0x270 really_probe+0xdb/0x340 ? pm_runtime_barrier+0x54/0x90 ? __pfx___driver_attach+0x10/0x10 __driver_probe_device+0x78/0x110 driver_probe_device+0x1f/0xa0 __driver_attach+0xba/0x1c0 bus_for_each_dev+0x8c/0xe0 bus_add_driver+0x112/0x1f0 driver_register+0x72/0xd0 jsm_init_module+0x36/0xff0 [jsm] ? __pfx_jsm_init_module+0x10/0x10 [jsm] do_one_initcall+0x58/0x310 do_init_module+0x60/0x230 Tested with Digi Neo PCIe 8 port card. Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM") Cc: stable <stable@kernel.org> Signed-off-by: Dustin Lundquist <dustin@null-ptr.net> Link: https://lore.kernel.org/r/3f31d4f75863614655c4673027a208be78d022ec.camel@null-ptr.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-21dt-bindings: serial: atmel,at91-usart: add microchip,sama7d65-usartDharma Balasubiramani
Add SAMA7D65 USART compatible to DT bindings documentation. Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com> Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com> Acked-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://lore.kernel.org/r/ba19dff5c20bd022cf5391ac909a85ab5e1797b4.1746201835.git.Ryan.Wanner@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-01vt: add new dynamically generated files to .gitignoreBartosz Golaszewski
Add new dynamically generated headers to the local .gitignore. Fixes: c2d2c5c0d631 ("vt: move UCS tables to the "shipped" form") Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Nicolas Pitre <npitre@baylibre.com> Link: https://lore.kernel.org/r/20250430122917.72105-1-brgl@bgdev.pl Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-01serdev: Refine several error or debug messagesZijun Hu
Refine several dev_err() and dev_dbg() messages to solve: // hardcoded device name dev_dbg(dev, "...dev_name_str...") // repeated device name since dev_dbg() also prints it as prefix dev_err(dev, "...%s...", dev_name(dev)) // not concise as dev_err(dev, "...%d...", err) dev_err(dev, "...%pe...", ERR_PTR(err)) Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250425-fix_serdev-v3-1-2e4ea8261640@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-018250: microchip: pci1xxxx: Add PCIe Hot reset disable support for Rev C0 and ↵Rengarajan S
later devices Systems that issue PCIe hot reset requests during a suspend/resume cycle cause PCI1XXXX device revisions prior to C0 to get its UART configuration registers reset to hardware default values. This results in device inaccessibility and data transfer failures. Starting with Revision C0, support was added in the device hardware (via the Hot Reset Disable Bit) to allow resetting only the PCIe interface and its associated logic, but preserving the UART configuration during a hot reset. This patch enables the hot reset disable feature during suspend/ resume for C0 and later revisions of the device. Signed-off-by: Rengarajan S <rengarajan.s@microchip.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250425145500.29036-1-rengarajan.s@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-01tty: serial: samsung_tty: support 18 uart portsFaraz Ata
ExynosAutov920 SoC supports 18 UART ports, update the value of UART_NR to accommodate the same. Signed-off-by: Faraz Ata <faraz.ata@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20250429102941.4138463-1-faraz.ata@samsung.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-28Merge 6.15-rc4 into tty-nextGreg Kroah-Hartman
We need the tty/serial fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-27Linux 6.15-rc4v6.15-rc4Linus Torvalds
2025-04-26Merge tag 'pci-v6.15-fixes-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull PCI fixes from Bjorn Helgaas: - When releasing a start-aligned resource, e.g., a bridge window, save start/end/flags for the next assignment attempt; fixes a v6.15-rc1 regression (Ilpo Järvinen) - Move set_pcie_speed.sh from TEST_PROGS to TEST_FILE; fixes a bwctrl selftest v6.15-rc1 regression (Ilpo Järvinen) - Add Manivannan Sadhasivam as maintainer of native host bridge and endpoint drivers (Manivannan Sadhasivam) - In endpoint test driver, defer IRQ allocation from .probe() until ioctl() to fix a regression on platforms where the Vendor/Device ID match doesn't include driver_data (Niklas Cassel) * tag 'pci-v6.15-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: misc: pci_endpoint_test: Defer IRQ allocation until ioctl(PCITEST_SET_IRQTYPE) MAINTAINERS: Move Manivannan Sadhasivam as PCI Native host bridge and endpoint maintainer selftests/pcie_bwctrl: Fix test progs list PCI: Restore assigned resources fully after release
2025-04-26Merge tag 'nfsd-6.15-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd fix from Chuck Lever: - Revert a v6.15 patch due to a report of SELinux test failures * tag 'nfsd-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: Revert "sunrpc: clean cache_detail immediately when flush is written frequently"
2025-04-26Merge tag 'x86-urgent-2025-04-26' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc x86 fixes from Ingo Molnar: - Fix 32-bit kernel boot crash if passed physical memory with more than 32 address bits - Fix Xen PV crash - Work around build bug in certain limited build environments - Fix CTEST instruction decoding in insn_decoder_test * tag 'x86-urgent-2025-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/insn: Fix CTEST instruction decoding x86/boot: Work around broken busybox 'truncate' tool x86/mm: Fix _pgd_alloc() for Xen PV mode x86/e820: Discard high memory that can't be addressed by 32-bit systems
2025-04-26Merge tag 'sched-urgent-2025-04-26' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Ingo Molnar: "Fix sporadic crashes in dequeue_entities() due to ... bad math. [ Arguably if pick_eevdf()/pick_next_entity() was less trusting of complex math being correct it could have de-escalated a crash into a warning, but that's for a different patch ]" * tag 'sched-urgent-2025-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/eevdf: Fix se->slice being set to U64_MAX and resulting crash
2025-04-26Merge tag 'perf-urgent-2025-04-26' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc perf events fixes from Ingo Molnar: - Use POLLERR for events in error state, instead of the ambiguous POLLHUP error value - Fix non-sampling (counting) events on certain x86 platforms * tag 'perf-urgent-2025-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86: Fix non-sampling (counting) events on certain x86 platforms perf/core: Change to POLLERR for pinned events with error
2025-04-26Merge tag 'irq-urgent-2025-04-26' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fix from Ingo Molnar: "Fix crashes in the gic-v2m irqchip driver, caused by an incorrect __init annotation" * tag 'irq-urgent-2025-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode()
2025-04-26Merge tag 'loongarch-fixes-6.15-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch fixes from Huacai Chen: "Add a missing Kconfig option, fix some bugs in exception handlers, memory management and KVM" * tag 'loongarch-fixes-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: LoongArch: KVM: Fix PMU pass-through issue if VM exits to host finally LoongArch: KVM: Fully clear some CSRs when VM reboot LoongArch: KVM: Fix multiple typos of KVM code LoongArch: Return NULL from huge_pte_offset() for invalid PMD LoongArch: Remove a bogus reference to ZONE_DMA LoongArch: Handle fp, lsx, lasx and lbt assembly symbols LoongArch: Make do_xyz() exception handlers more robust LoongArch: Make regs_irqs_disabled() more clear LoongArch: Select ARCH_USE_MEMTEST
2025-04-26Merge tag 'for-linus' of https://github.com/openrisc/linuxLinus Torvalds
Pull OpenRISC updates from Stafford Horne: - Support for cacheinfo API to expose OpenRISC cache info via sysfs, this also translated to some cleanups to OpenRISC cache flush and invalidate API's - Documentation updates for new mailing list and toolchain binaries * tag 'for-linus' of https://github.com/openrisc/linux: Documentation: openrisc: Update toolchain binaries URL Documentation: openrisc: Update mailing list openrisc: Add cacheinfo support openrisc: Introduce new utility functions to flush and invalidate caches openrisc: Refactor struct cpuinfo_or1k to reduce duplication
2025-04-26Revert "sunrpc: clean cache_detail immediately when flush is written frequently"Chuck Lever
Ondrej reports that certain SELinux tests are failing after commit fc2a169c56de ("sunrpc: clean cache_detail immediately when flush is written frequently"), merged during the v6.15 merge window. Reported-by: Ondrej Mosnacek <omosnace@redhat.com> Fixes: fc2a169c56de ("sunrpc: clean cache_detail immediately when flush is written frequently") Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2025-04-26Merge tag 'move-lib-kunit-v6.15-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull kunit fix from Kees Cook: "A single fix for the kunit lib/tests/ relocation: - Ensure prime numbers tests are included in KUnit test runs (Mark Brown)" * tag 'move-lib-kunit-v6.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lib: Ensure prime numbers tests are included in KUnit test runs
2025-04-26Merge tag 'drm-fixes-2025-04-26' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds
Pull drm fixes from Dave Airlie: "Weekly drm fixes, mostly amdgpu, with some exynos cleanups and a couple of minor fixes, seems a bit quiet, but probably some lag from Easter holidays. amdgpu: - P2P DMA fixes - Display reset fixes - DCN 3.5 fixes - ACPI EDID fix - LTTPR fix - mode_valid() fix exynos: - fix spelling error - remove redundant error handling in exynos_drm_vidi.c module - marks struct decon_data as const in the exynos7_drm_decon driver since it is only read - Remove unnecessary checking in exynos_drm_drv.c module meson: - Fix VCLK calculation panel: - jd9365a: Fix reset polarity" * tag 'drm-fixes-2025-04-26' of https://gitlab.freedesktop.org/drm/kernel: drm/exynos: Fix spelling mistake "enqueu" -> "enqueue" drm/exynos: exynos7_drm_decon: Consstify struct decon_data drm/exynos: fixed a spelling error drm/exynos/vidi: Remove redundant error handling in vidi_get_modes() drm/exynos: Remove unnecessary checking drm/amd/display: do not copy invalid CRTC timing info drm/amd/display: Default IPS to RCG_IN_ACTIVE_IPS2_IN_OFF drm/amd/display: Use 16ms AUX read interval for LTTPR with old sinks drm/amd/display: Fix ACPI edid parsing on some Lenovo systems drm/amdgpu: Allow P2P access through XGMI drm/amd/display: Enable urgent latency adjustment on DCN35 drm/amd/display: Force full update in gpu reset drm/amd/display: Fix gpu reset in multidisplay config drm/amdgpu: Don't pin VRAM without DMABUF_MOVE_NOTIFY drm/amdgpu: Use allowed_domains for pinning dmabufs drm: panel: jd9365da: fix reset signal polarity in unprepare drm/meson: use unsigned long long / Hz for frequency types Revert "drm/meson: vclk: fix calculation of 59.94 fractional rates"
2025-04-26vt: move UCS tables to the "shipped" formNicolas Pitre
Use the "shipped" mechanism to copy pre-generated tables to the build tree by default. If GENERATE_UCS_TABLES=1 then they are generated at build time instead. If GENERATE_UCS_TABLES=2 then gen_ucs_recompose_table.py is invoked with --full. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Suggested-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-15-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: refresh ucs_width_table.h and adjust code in ucs.c accordinglyNicolas Pitre
Width tables are now split into BMP (16-bit) and non-BMP (above 16-bit). This reduces the corresponding text size by 20-25%. Note: scripts/checkpatch.pl complains about "... exceeds 100 columns". Please ignore. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-14-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: update gen_ucs_width_table.py to make tables more space efficientNicolas Pitre
Split table ranges into BMP (16-bit) and non-BMP (above 16-bit). This reduces the corresponding text size by 20-25%. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-13-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: remove zero-width-space handling from conv_uni_to_pc()Nicolas Pitre
This is now taken care of by ucs_is_zero_width(). Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-12-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: pad double-width code points with a zero-width spaceNicolas Pitre
In the Unicode screen buffer, we follow double-width code points with a space to maintain proper column alignment. This, however, creates semantic problems when e.g. using cut and paste. Let's use a better code point for the column padding's purpose i.e. a zero-width space rather than a full space. This way the combination retains a width of 2. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-11-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: support Unicode recompositionNicolas Pitre
Try replacing any decomposed Unicode sequence by the corresponding recomposed code point. Code point to glyph correspondance works best after recomposition, and this apply mostly to single-width code points therefore we can't preserve them in their decomposed form anyway. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-10-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: create ucs_recompose_table.h with gen_ucs_recompose_table.pyNicolas Pitre
Table of base character + combining mark pairs with their precomposed equivalents. Note: scripts/checkpatch.pl complains about "... exceeds 100 columns". Please ignore. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-9-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: introduce gen_ucs_recompose_table.py to create ucs_recompose_table.hNicolas Pitre
The generated table maps base character + combining mark pairs to their precomposed equivalents using Python's unicodedata module. The default script behavior is to create a table with most commonly used Latin, Greek, and Cyrillic recomposition pairs only. It is much smaller than the table with all possible recomposition pairs (71 entries vs 1000 entries). But if one needs/wants the full table then simply running the script with the --full argument will generate it. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-8-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: use new tables in ucs.cNicolas Pitre
This removes the table from ucs.c and substitutes the generated tables from ucs_width_table.h providing comprehensive ranges for double-width and zero-width Unicode code points. Also implements ucs_is_zero_width() to query the new zero-width table. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-7-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: create ucs_width_table.h with gen_ucs_width_table.pyNicolas Pitre
Provide comprehensive ranges for double-width and zero-width Unicode code points. Note: scripts/checkpatch.pl complains about "... exceeds 100 columns". Please ignore. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-6-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: introduce gen_ucs_width_table.py to create ucs_width_table.hNicolas Pitre
The table in ucs.c is terribly out of date and incomplete. We also need a second table to store zero-width code points. Properly maintaining those tables manually is impossible. So here's a script to generate them. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-5-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: properly support zero-width Unicode code pointsNicolas Pitre
Zero-width Unicode code points are causing misalignment in vertically aligned content, disrupting the visual layout. Let's handle zero-width code points more intelligently. Double-width code points are stored in the screen grid followed by a white space code point to create the expected screen layout. When a double-width code point is followed by a zero-width code point in the console incoming bytestream (e.g., an emoji with a presentation selector) then we may replace the white space padding by that zero-width code point instead of dropping it. This maximize screen content information while preserving proper layout. If a zero-width code point is preceded by a single-width code point then the above trick is not possible and such zero-width code point must be dropped. VS16 (Variation Selector 16, U+FE0F) is special as it typically doubles the width of the preceding single-width code point. We handle that case by giving VS16 a width of 1 instead of 0 when that happens. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-4-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: move unicode processing to a separate fileNicolas Pitre
This will make it easier to maintain. Also make it depend on CONFIG_CONSOLE_TRANSLATIONS. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-3-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26vt: minor cleanup to vc_translate_unicode()Nicolas Pitre
Make it clearer when a sequence is bad. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20250417184849.475581-2-nico@fluxnic.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26Revert "vt: minor cleanup to vc_translate_unicode()"Greg Kroah-Hartman
This reverts commit 74045f6658f11241a09d93404d79828cc99e94dc. A new version of the series was submitted, so it's easier to revert the old one and add the new one due to the changes invovled. Cc: Nicolas Pitre <nico@fluxnic.net> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-04-26Revert "vt: move unicode processing to a separate file"Greg Kroah-Hartman
This reverts commit 2acaf27cd7f4f32bfe8bf7335690618e2417e744. A new version of the series was submitted, so it's easier to revert the old one and add the new one due to the changes invovled. Cc: Nicolas Pitre <nico@fluxnic.net> Cc: Jiri Slaby <jirislaby@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit (git 2.34.1) at 2025-09-10 23:51:53 +0000