[PATCH v2 00/57] irqdomain: Cleanups and Documentation

From: Jiri Slaby (SUSE)
Date: Wed Mar 19 2025 - 05:31:09 EST

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Hi,

tl;dr if patches are agreed upon, I ask subsys maintainers to take the
respective ones via their trees (as they are split per subsys), so that
the IRQ tree can take only the rest. That would minimize churn/conflicts
during merges.

===

While I was reading through the irqdomain code and headers, I found some
naming and documentation hard to follow or incomplete. Especially the
naming of _add/_create/_instantiate functions.

I tried to come up with a better state with this patchset:
* only irq _domain_ (not host),
* only irq_domain_create*() functions, all taking fwnode uniformly,

Finally, all the irqdomain stuff is now plugged (and generated) into
Documentation. So that everyone can walk through it at
https://www.kernel.org/doc/ (once applied, of course).

Changelog
---------
[v2]
- 'extern' removal patch dropped (already merged into tip),
- some new patches added,
- only _create*() functions preserved, all _add*() are removed,
as per <87wme3m4a9.ffs@tglx>.

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Jiri Slaby (SUSE) (57):
irqdomain: um: use irq_domain_create_linear() helper
irqdomain: Rename irq_set_default_host() to irq_set_default_domain()
irqdomain: Rename irq_get_default_host() to irq_get_default_domain()
irqdomain.h: Stop using 'host' for domain
irqdomain: cdx: Switch to of_fwnode_handle()
irqdomain: irqchip: Switch to of_fwnode_handle()
irqdomain: pci: Switch to of_fwnode_handle()
irqdomain: ppc: Switch to of_fwnode_handle()
irqdomain: remoteproc: Switch to of_fwnode_handle()
irqdomain: x86: Switch to of_fwnode_handle()
irqdomain: Drop of_node_to_fwnode()
irqdomain: Make irq_domain_create_hierarchy() an inline
irqdomain: arc: Switch to irq_domain_create_linear()
irqdomain: arm: Switch to irq_domain_create_*()
irqdomain: bus: Switch to irq_domain_create_simple()
irqdomain: edac: Switch to irq_domain_create_linear()
irqdomain: gpio: Switch to irq_domain_create_*()
irqdomain: gpu: Switch to irq_domain_create_linear()
irqdomain: i2c: Switch to irq_domain_create_linear()
irqdomain: iio: Switch to irq_domain_create_simple()
irqdomain: irqchip: Switch to irq_domain_create_*()
irqdomain: mailbox: Switch to irq_domain_create_tree()
irqdomain: memory: Switch to irq_domain_create_linear()
irqdomain: mfd: Switch to irq_domain_create_*()
irqdomain: mips: Switch to irq_domain_create_*()
irqdomain: misc: Switch to irq_domain_create_simple()
irqdomain: net: Switch to irq_domain_create_*()
irqdomain: nios2: Switch to irq_domain_create_linear()
irqdomain: pci: Switch to irq_domain_create_linear()
irqdomain: pinctrl: Switch to irq_domain_create_*()
irqdomain: platform/x86: Switch to irq_domain_create_linear()
irqdomain: ppc: Switch to irq_domain_create_*()
irqdomain: sh: Switch to irq_domain_create_*()
irqdomain: soc: Switch to irq_domain_create_*()
irqdomain: sound: Switch to irq_domain_create_linear()
irqdomain: spmi: Switch to irq_domain_create_tree()
irqdomain: ssb: Switch to irq_domain_create_linear()
irqdomain: thermal: Switch to irq_domain_create_linear()
irqdomain: ppc: Switch irq_domain_add_nomap() to use fwnode
irqdomain: Drop irq_domain_add_*() functions
irqdomain: ppc: Switch to irq_find_mapping()
irqdomain: sh: Switch to irq_find_mapping()
irqdomain: gpio: Switch to irq_find_mapping()
irqdomain: gpu: Switch to irq_find_mapping()
irqdomain: i2c: Switch to irq_find_mapping()
irqdomain: irqchip: Switch to irq_find_mapping()
irqdomain: pinctrl: Switch to irq_find_mapping()
irqdomain: soc: Switch to irq_find_mapping()
irqdomain: Drop irq_linear_revmap()
irqdomain: Use irq_domain_instantiate() retvals as initializers
irqdomain: Make struct irq_domain_info variables const
irqdomain.h: Improve kernel-docs of functions
docs: irq/concepts: Add commas and reflow
docs: irq/concepts: Minor improvements
docs: irq-domain.rst: Simple improvements
docs: irqdomain: Update
irqdomain.c: Fix kernel-doc and add it to Documentation

Documentation/core-api/genericirq.rst | 2 -
Documentation/core-api/irq/concepts.rst | 27 +--
Documentation/core-api/irq/irq-domain.rst | 202 +++++++++--------
.../zh_CN/core-api/irq/irq-domain.rst | 8 +-
arch/arc/kernel/intc-arcv2.c | 4 +-
arch/arc/kernel/intc-compact.c | 7 +-
arch/arc/kernel/mcip.c | 3 +-
arch/arm/common/sa1111.c | 6 +-
arch/arm/mach-exynos/suspend.c | 5 +-
arch/arm/mach-imx/avic.c | 4 +-
arch/arm/mach-imx/gpc.c | 5 +-
arch/arm/mach-imx/tzic.c | 4 +-
arch/arm/mach-omap1/irq.c | 3 +-
arch/arm/mach-omap2/omap-wakeupgen.c | 5 +-
arch/arm/mach-pxa/irq.c | 7 +-
arch/arm/plat-orion/gpio.c | 12 +-
arch/mips/ath25/ar2315.c | 4 +-
arch/mips/ath25/ar5312.c | 4 +-
arch/mips/cavium-octeon/octeon-irq.c | 31 +--
arch/mips/lantiq/irq.c | 2 +-
arch/mips/pci/pci-ar2315.c | 4 +-
arch/mips/pci/pci-rt3883.c | 7 +-
arch/mips/pci/pci-xtalk-bridge.c | 2 +-
arch/mips/ralink/irq.c | 2 +-
arch/mips/sgi-ip27/ip27-irq.c | 2 +-
arch/mips/sgi-ip30/ip30-irq.c | 2 +-
arch/nios2/kernel/irq.c | 5 +-
arch/powerpc/kvm/book3s_hv.c | 2 +-
arch/powerpc/kvm/book3s_xive.c | 2 +-
arch/powerpc/platforms/44x/uic.c | 9 +-
.../powerpc/platforms/512x/mpc5121_ads_cpld.c | 3 +-
arch/powerpc/platforms/52xx/media5200.c | 2 +-
arch/powerpc/platforms/52xx/mpc52xx_gpt.c | 6 +-
arch/powerpc/platforms/52xx/mpc52xx_pic.c | 6 +-
.../platforms/85xx/socrates_fpga_pic.c | 4 +-
arch/powerpc/platforms/8xx/cpm1-ic.c | 5 +-
arch/powerpc/platforms/8xx/pic.c | 5 +-
arch/powerpc/platforms/amigaone/setup.c | 2 +-
arch/powerpc/platforms/chrp/setup.c | 2 +-
.../platforms/embedded6xx/flipper-pic.c | 9 +-
arch/powerpc/platforms/embedded6xx/hlwd-pic.c | 7 +-
arch/powerpc/platforms/pasemi/setup.c | 2 +-
arch/powerpc/platforms/powermac/pic.c | 9 +-
arch/powerpc/platforms/powermac/smp.c | 2 +-
arch/powerpc/platforms/powernv/opal-irqchip.c | 3 +-
arch/powerpc/platforms/powernv/pci-ioda.c | 4 +-
arch/powerpc/platforms/ps3/interrupt.c | 4 +-
arch/powerpc/platforms/pseries/msi.c | 4 +-
arch/powerpc/sysdev/cpm2_pic.c | 5 +-
arch/powerpc/sysdev/ehv_pic.c | 9 +-
arch/powerpc/sysdev/fsl_msi.c | 2 +-
arch/powerpc/sysdev/ge/ge_pic.c | 7 +-
arch/powerpc/sysdev/i8259.c | 4 +-
arch/powerpc/sysdev/ipic.c | 9 +-
arch/powerpc/sysdev/mpic.c | 12 +-
arch/powerpc/sysdev/tsi108_pci.c | 4 +-
arch/powerpc/sysdev/xics/xics-common.c | 2 +-
arch/powerpc/sysdev/xive/common.c | 4 +-
arch/sh/boards/mach-se/7343/irq.c | 7 +-
arch/sh/boards/mach-se/7722/irq.c | 4 +-
arch/sh/boards/mach-x3proto/gpio.c | 2 +-
arch/um/drivers/virt-pci.c | 15 +-
arch/x86/kernel/apic/io_apic.c | 2 +-
arch/x86/kernel/apic/vector.c | 2 +-
drivers/bus/moxtet.c | 6 +-
drivers/cdx/cdx_msi.c | 4 +-
drivers/edac/altera_edac.c | 4 +-
drivers/gpio/gpio-brcmstb.c | 2 +-
drivers/gpio/gpio-davinci.c | 5 +-
drivers/gpio/gpio-em.c | 5 +-
drivers/gpio/gpio-grgpio.c | 2 +-
drivers/gpio/gpio-idt3243x.c | 2 +-
drivers/gpio/gpio-lpc18xx.c | 8 +-
drivers/gpio/gpio-mvebu.c | 2 +-
drivers/gpio/gpio-mxc.c | 2 +-
drivers/gpio/gpio-mxs.c | 4 +-
drivers/gpio/gpio-pxa.c | 6 +-
drivers/gpio/gpio-rockchip.c | 2 +-
drivers/gpio/gpio-sa1100.c | 2 +-
drivers/gpio/gpio-sodaville.c | 2 +-
drivers/gpio/gpio-tb10x.c | 2 +-
drivers/gpio/gpio-twl4030.c | 5 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 4 +-
drivers/gpu/drm/msm/msm_mdss.c | 2 +-
drivers/gpu/ipu-v3/ipu-common.c | 8 +-
drivers/i2c/busses/i2c-cht-wc.c | 2 +-
drivers/i2c/muxes/i2c-mux-pca954x.c | 8 +-
drivers/iio/adc/stm32-adc-core.c | 7 +-
drivers/irqchip/exynos-combiner.c | 2 +-
drivers/irqchip/irq-al-fic.c | 2 +-
drivers/irqchip/irq-alpine-msi.c | 7 +-
drivers/irqchip/irq-apple-aic.c | 4 +-
drivers/irqchip/irq-armada-370-xp.c | 18 +-
drivers/irqchip/irq-aspeed-i2c-ic.c | 2 +-
drivers/irqchip/irq-aspeed-intc.c | 2 +-
drivers/irqchip/irq-aspeed-scu-ic.c | 2 +-
drivers/irqchip/irq-aspeed-vic.c | 4 +-
drivers/irqchip/irq-ath79-misc.c | 4 +-
drivers/irqchip/irq-atmel-aic-common.c | 2 +-
drivers/irqchip/irq-bcm2712-mip.c | 4 +-
drivers/irqchip/irq-bcm2835.c | 2 +-
drivers/irqchip/irq-bcm2836.c | 2 +-
drivers/irqchip/irq-bcm6345-l1.c | 2 +-
drivers/irqchip/irq-bcm7038-l1.c | 2 +-
drivers/irqchip/irq-bcm7120-l2.c | 2 +-
drivers/irqchip/irq-brcmstb-l2.c | 2 +-
drivers/irqchip/irq-clps711x.c | 6 +-
drivers/irqchip/irq-crossbar.c | 6 +-
drivers/irqchip/irq-csky-apb-intc.c | 2 +-
drivers/irqchip/irq-csky-mpintc.c | 2 +-
drivers/irqchip/irq-davinci-cp-intc.c | 6 +-
drivers/irqchip/irq-digicolor.c | 2 +-
drivers/irqchip/irq-dw-apb-ictl.c | 2 +-
drivers/irqchip/irq-ftintc010.c | 5 +-
drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 2 +-
drivers/irqchip/irq-gic-v3.c | 4 +-
drivers/irqchip/irq-goldfish-pic.c | 7 +-
drivers/irqchip/irq-hip04.c | 6 +-
drivers/irqchip/irq-i8259.c | 4 +-
drivers/irqchip/irq-idt3243x.c | 2 +-
drivers/irqchip/irq-imgpdc.c | 2 +-
drivers/irqchip/irq-imx-gpcv2.c | 6 +-
drivers/irqchip/irq-imx-intmux.c | 2 +-
drivers/irqchip/irq-imx-irqsteer.c | 2 +-
drivers/irqchip/irq-ingenic-tcu.c | 4 +-
drivers/irqchip/irq-ingenic.c | 4 +-
drivers/irqchip/irq-ixp4xx.c | 2 +-
drivers/irqchip/irq-jcore-aic.c | 5 +-
drivers/irqchip/irq-keystone.c | 4 +-
drivers/irqchip/irq-lan966x-oic.c | 2 +-
drivers/irqchip/irq-loongarch-cpu.c | 2 +-
drivers/irqchip/irq-loongson-eiointc.c | 2 +-
drivers/irqchip/irq-loongson-htvec.c | 2 +-
drivers/irqchip/irq-loongson-liointc.c | 2 +-
drivers/irqchip/irq-loongson-pch-msi.c | 2 +-
drivers/irqchip/irq-loongson-pch-pic.c | 2 +-
drivers/irqchip/irq-lpc32xx.c | 4 +-
drivers/irqchip/irq-ls-extirq.c | 4 +-
drivers/irqchip/irq-ls-scfg-msi.c | 10 +-
drivers/irqchip/irq-ls1x.c | 4 +-
drivers/irqchip/irq-mchp-eic.c | 5 +-
drivers/irqchip/irq-meson-gpio.c | 2 +-
drivers/irqchip/irq-mips-cpu.c | 13 +-
drivers/irqchip/irq-mips-gic.c | 15 +-
drivers/irqchip/irq-mmp.c | 12 +-
drivers/irqchip/irq-mscc-ocelot.c | 4 +-
drivers/irqchip/irq-mst-intc.c | 4 +-
drivers/irqchip/irq-mtk-cirq.c | 5 +-
drivers/irqchip/irq-mtk-sysirq.c | 4 +-
drivers/irqchip/irq-mvebu-gicp.c | 2 +-
drivers/irqchip/irq-mvebu-odmi.c | 2 +-
drivers/irqchip/irq-mvebu-pic.c | 4 +-
drivers/irqchip/irq-mvebu-sei.c | 6 +-
drivers/irqchip/irq-mxs.c | 4 +-
drivers/irqchip/irq-nvic.c | 2 +-
drivers/irqchip/irq-omap-intc.c | 4 +-
drivers/irqchip/irq-or1k-pic.c | 4 +-
drivers/irqchip/irq-orion.c | 6 +-
drivers/irqchip/irq-owl-sirq.c | 4 +-
drivers/irqchip/irq-pic32-evic.c | 8 +-
drivers/irqchip/irq-pruss-intc.c | 4 +-
drivers/irqchip/irq-qcom-mpm.c | 2 +-
drivers/irqchip/irq-realtek-rtl.c | 2 +-
drivers/irqchip/irq-renesas-intc-irqpin.c | 6 +-
drivers/irqchip/irq-renesas-irqc.c | 4 +-
drivers/irqchip/irq-renesas-rza1.c | 6 +-
drivers/irqchip/irq-renesas-rzg2l.c | 6 +-
drivers/irqchip/irq-renesas-rzv2h.c | 5 +-
drivers/irqchip/irq-riscv-intc.c | 2 +-
drivers/irqchip/irq-sa11x0.c | 2 +-
drivers/irqchip/irq-sni-exiu.c | 6 +-
drivers/irqchip/irq-sp7021-intc.c | 4 +-
drivers/irqchip/irq-starfive-jh8100-intc.c | 4 +-
drivers/irqchip/irq-stm32-exti.c | 4 +-
drivers/irqchip/irq-stm32mp-exti.c | 9 +-
drivers/irqchip/irq-sun4i.c | 2 +-
drivers/irqchip/irq-sun6i-r.c | 4 +-
drivers/irqchip/irq-sunxi-nmi.c | 2 +-
drivers/irqchip/irq-tb10x.c | 8 +-
drivers/irqchip/irq-tegra.c | 5 +-
drivers/irqchip/irq-ti-sci-inta.c | 10 +-
drivers/irqchip/irq-ti-sci-intr.c | 7 +-
drivers/irqchip/irq-ts4800.c | 2 +-
drivers/irqchip/irq-uniphier-aidet.c | 2 +-
drivers/irqchip/irq-versatile-fpga.c | 4 +-
drivers/irqchip/irq-vf610-mscm-ir.c | 6 +-
drivers/irqchip/irq-vic.c | 5 +-
drivers/irqchip/irq-vt8500.c | 2 +-
drivers/irqchip/irq-wpcm450-aic.c | 2 +-
drivers/irqchip/irq-xilinx-intc.c | 6 +-
drivers/irqchip/irq-xtensa-mx.c | 7 +-
drivers/irqchip/irq-xtensa-pic.c | 8 +-
drivers/irqchip/irq-zevio.c | 4 +-
drivers/irqchip/spear-shirq.c | 2 +-
drivers/mailbox/qcom-ipcc.c | 4 +-
drivers/memory/omap-gpmc.c | 6 +-
drivers/mfd/88pm860x-core.c | 4 +-
drivers/mfd/ab8500-core.c | 6 +-
drivers/mfd/arizona-irq.c | 3 +-
drivers/mfd/db8500-prcmu.c | 6 +-
drivers/mfd/fsl-imx25-tsadc.c | 5 +-
drivers/mfd/lp8788-irq.c | 2 +-
drivers/mfd/max8925-core.c | 4 +-
drivers/mfd/max8997-irq.c | 4 +-
drivers/mfd/max8998-irq.c | 2 +-
drivers/mfd/mt6358-irq.c | 6 +-
drivers/mfd/mt6397-irq.c | 6 +-
drivers/mfd/qcom-pm8xxx.c | 6 +-
drivers/mfd/stmfx.c | 2 +-
drivers/mfd/stmpe.c | 4 +-
drivers/mfd/tc3589x.c | 6 +-
drivers/mfd/tps65217.c | 2 +-
drivers/mfd/tps6586x.c | 2 +-
drivers/mfd/twl4030-irq.c | 4 +-
drivers/mfd/twl6030-irq.c | 5 +-
drivers/mfd/wm831x-irq.c | 15 +-
drivers/mfd/wm8994-irq.c | 4 +-
drivers/misc/hi6421v600-irq.c | 5 +-
drivers/net/dsa/microchip/ksz_common.c | 5 +-
drivers/net/dsa/microchip/ksz_ptp.c | 4 +-
drivers/net/dsa/mv88e6xxx/chip.c | 2 +-
drivers/net/dsa/mv88e6xxx/global2.c | 6 +-
drivers/net/dsa/qca/ar9331.c | 4 +-
drivers/net/dsa/realtek/rtl8365mb.c | 4 +-
drivers/net/dsa/realtek/rtl8366rb.c | 6 +-
.../net/ethernet/wangxun/txgbe/txgbe_irq.c | 6 +-
drivers/net/usb/lan78xx.c | 9 +-
drivers/pci/controller/dwc/pci-dra7xx.c | 4 +-
drivers/pci/controller/dwc/pci-keystone.c | 2 +-
.../pci/controller/dwc/pcie-designware-host.c | 2 +-
drivers/pci/controller/dwc/pcie-dw-rockchip.c | 4 +-
drivers/pci/controller/dwc/pcie-uniphier.c | 2 +-
.../controller/mobiveil/pcie-mobiveil-host.c | 11 +-
drivers/pci/controller/pci-aardvark.c | 14 +-
drivers/pci/controller/pci-ftpci100.c | 4 +-
drivers/pci/controller/pci-mvebu.c | 6 +-
drivers/pci/controller/pci-xgene-msi.c | 5 +-
drivers/pci/controller/pcie-altera-msi.c | 4 +-
drivers/pci/controller/pcie-altera.c | 2 +-
drivers/pci/controller/pcie-brcmstb.c | 4 +-
drivers/pci/controller/pcie-iproc-msi.c | 6 +-
drivers/pci/controller/pcie-mediatek-gen3.c | 9 +-
drivers/pci/controller/pcie-mediatek.c | 6 +-
drivers/pci/controller/pcie-rockchip-host.c | 4 +-
drivers/pci/controller/pcie-xilinx-cpm.c | 10 +-
drivers/pci/controller/pcie-xilinx-dma-pl.c | 14 +-
drivers/pci/controller/pcie-xilinx-nwl.c | 11 +-
drivers/pci/controller/pcie-xilinx.c | 5 +-
drivers/pci/controller/plda/pcie-plda-host.c | 16 +-
drivers/pinctrl/mediatek/mtk-eint.c | 5 +-
drivers/pinctrl/pinctrl-at91-pio4.c | 2 +-
drivers/pinctrl/pinctrl-keembay.c | 2 +-
drivers/pinctrl/pinctrl-single.c | 9 +-
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 7 +-
drivers/platform/x86/asus-tf103c-dock.c | 2 +-
drivers/remoteproc/pru_rproc.c | 2 +-
drivers/sh/intc/irqdomain.c | 5 +-
drivers/soc/dove/pmu.c | 4 +-
drivers/soc/fsl/qe/qe_ic.c | 8 +-
drivers/soc/qcom/smp2p.c | 2 +-
drivers/soc/qcom/smsm.c | 2 +-
drivers/soc/tegra/pmc.c | 5 +-
drivers/spmi/spmi-pmic-arb.c | 2 +-
drivers/ssb/driver_gpio.c | 8 +-
drivers/thermal/qcom/lmh.c | 3 +-
drivers/thermal/tegra/soctherm.c | 2 +-
include/linux/gpio/driver.h | 5 +-
include/linux/irqdomain.h | 211 ++++++++----------
kernel/irq/irqdomain.c | 88 +-------
sound/soc/codecs/wcd937x.c | 2 +-
sound/soc/codecs/wcd938x.c | 2 +-
sound/soc/codecs/wcd939x.c | 2 +-
272 files changed, 838 insertions(+), 945 deletions(-)

--
2.49.0

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