portugalfuturista/openwrt-pf
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
openwrt-pf/package/kernel/linux/modules/i2c.mk
Joshua Covington 11de7145c9
kernel: i2c-designware: disable core on 32-bit bcm27xx targets on 6.18 
The bcm27xx/bcm2708 all-kmods CI build fails when modpost reaches the
DesignWare I2C core module:

  ERROR: modpost: "__aeabi_uldivmod"
  [drivers/i2c/busses/i2c-designware-core.ko] undefined!

This is triggered by CONFIG_ALL_KMODS=y. The old 32-bit Raspberry Pi
subtargets do not normally select this driver for runtime use, but all-kmods
forces the kmod package to be built anyway. On 32-bit ARM, raw 64-bit
division in a module can cause GCC to emit the ARM EABI helper
__aeabi_uldivmod, which is not available as a kernel module symbol.

The failing reference comes from i2c-designware-master.c, where clock_calc()
uses raw u64 division for SCL timing calculations (introduced with commit
3805d13c3ead21494f7d00aa44f10e3656363d4c in rpi-6.18.y / "i2c: designware:
Support non-standard bus speeds"). That is a kernel-side portability issue,
but these old bcm27xx subtargets do not use DesignWare I2C hardware. They
use the Broadcom I2C controller instead.

The failure is emitted for i2c-designware-core.ko, so guard the hidden core
package itself rather than only guarding the platform or PCI frontend package.
This prevents CONFIG_ALL_KMODS from selecting the failing core module directly
on the affected 32-bit bcm27xx subtargets.

DesignWare I2C is relevant for newer Raspberry Pi 5 / RP1 based systems, so
keep it available for bcm2712.

A similar issue was reported by NixOS for Raspberry Pi ARM builds, where
i2c-designware-core.ko failed with the same unresolved __aeabi_uldivmod symbol.
Their workaround was to disable the DesignWare I2C symbols for older Raspberry
Pi targets that do not need them.
Link: https://github.com/NixOS/nixpkgs/issues/464515

Until the underlying ARM32 kernel-side issue is fixed, avoid building
the DesignWare core package on bcm2708, bcm2709 and bcm2710.

Signed-off-by: Joshua Covington <joshuacov@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/23703
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
2026-07-07 08:48:40 +02:00

426 lines
11 KiB
Makefile
Raw Blame History

#
# Copyright (C) 2006-2009 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
I2C_MENU:=I2C support
ModuleConfVar=$(word 1,$(subst :,$(space),$(1)))
ModuleFullPath=$(LINUX_DIR)/$(word 2,$(subst :,$(space),$(1))).ko
ModuleKconfig=$(foreach mod,$(1),$(call ModuleConfVar,$(mod)))
ModuleFiles=$(foreach mod,$(1),$(call ModuleFullPath,$(mod)))
ModuleAuto=$(call AutoLoad,$(1),$(foreach mod,$(2),$(basename $(notdir $(call ModuleFullPath,$(mod))))),$(3))
define i2c_defaults
SUBMENU:=$(I2C_MENU)
KCONFIG:=$(call ModuleKconfig,$(1))
FILES:=$(call ModuleFiles,$(1))
AUTOLOAD:=$(call ModuleAuto,$(2),$(1),$(3))
endef
I2C_CORE_MODULES:= \
CONFIG_I2C:drivers/i2c/i2c-core \
CONFIG_I2C_CHARDEV:drivers/i2c/i2c-dev
define KernelPackage/i2c-core
$(call i2c_defaults,$(I2C_CORE_MODULES),51)
TITLE:=I2C support
endef
define KernelPackage/i2c-core/description
Kernel modules for I2C support
endef
$(eval $(call KernelPackage,i2c-core))
I2C_ALGOBIT_MODULES:= \
CONFIG_I2C_ALGOBIT:drivers/i2c/algos/i2c-algo-bit
define KernelPackage/i2c-algo-bit
$(call i2c_defaults,$(I2C_ALGOBIT_MODULES),55)
TITLE:=I2C bit-banging interfaces
DEPENDS:=+kmod-i2c-core
endef
define KernelPackage/i2c-algo-bit/description
Kernel modules for I2C bit-banging interfaces
endef
$(eval $(call KernelPackage,i2c-algo-bit))
I2C_ALGOPCA_MODULES:= \
CONFIG_I2C_ALGOPCA:drivers/i2c/algos/i2c-algo-pca
define KernelPackage/i2c-algo-pca
$(call i2c_defaults,$(I2C_ALGOPCA_MODULES),55)
TITLE:=I2C PCA 9564 interfaces
DEPENDS:=+kmod-i2c-core
endef
define KernelPackage/i2c-algo-pca/description
Kernel modules for I2C PCA 9564 interfaces
endef
$(eval $(call KernelPackage,i2c-algo-pca))
I2C_ALGOPCF_MODULES:= \
CONFIG_I2C_ALGOPCF:drivers/i2c/algos/i2c-algo-pcf
define KernelPackage/i2c-algo-pcf
$(call i2c_defaults,$(I2C_ALGOPCF_MODULES),55)
TITLE:=I2C PCF 8584 interfaces
DEPENDS:=+kmod-i2c-core
endef
define KernelPackage/i2c-algo-pcf/description
Kernel modules for I2C PCF 8584 interfaces
endef
$(eval $(call KernelPackage,i2c-algo-pcf))
I2C_CCGS_UCSI_MODULES:= \
CONFIG_I2C_CCGX_UCSI:drivers/i2c/busses/i2c-ccgx-ucsi
define KernelPackage/i2c-ccgs-ucsi
$(call i2c_defaults,$(I2C_CCGS_UCSI_MODULES),58)
TITLE:=Cypress CCGx Type-C controller
DEPENDS:=+kmod-i2c-core +kmod-regmap-core
HIDDEN:=y
endef
$(eval $(call KernelPackage,i2c-ccgs-ucsi))
I2C_DWCORE_MODULES:= \
CONFIG_I2C_DESIGNWARE_CORE:drivers/i2c/busses/i2c-designware-core
define KernelPackage/i2c-designware-core
$(call i2c_defaults,$(I2C_DWCORE_MODULES),58)
TITLE:=Synopsys DesignWare I2C core
DEPENDS:= \
@!(LINUX_6_18&&(TARGET_bcm27xx_bcm2708||TARGET_bcm27xx_bcm2709||TARGET_bcm27xx_bcm2710)) \
+kmod-i2c-core +kmod-regmap-core
HIDDEN:=y
endef
$(eval $(call KernelPackage,i2c-designware-core))
I2C_DWPCI_MODULES:= \
CONFIG_I2C_DESIGNWARE_PCI:drivers/i2c/busses/i2c-designware-pci
define KernelPackage/i2c-designware-pci
$(call i2c_defaults,$(I2C_DWPCI_MODULES),59)
TITLE:=Synopsys DesignWare I2C PCI
DEPENDS:=@PCI_SUPPORT +kmod-i2c-designware-core +kmod-i2c-ccgs-ucsi
endef
define KernelPackage/i2c-designware-pci/description
Support for Synopsys DesignWare I2C PCI controller. Only master mode is
supported.
endef
$(eval $(call KernelPackage,i2c-designware-pci))
I2C_DWPLAT_MODULES:= \
CONFIG_I2C_DESIGNWARE_PLATFORM:drivers/i2c/busses/i2c-designware-platform
define KernelPackage/i2c-designware-platform
$(call i2c_defaults,$(I2C_DWPLAT_MODULES),59)
TITLE:=Synopsys DesignWare I2C Platform
DEPENDS:=+kmod-i2c-designware-core
endef
define KernelPackage/i2c-designware-platform/description
Support for Synopsys DesignWare I2C Platform controller. Only master mode
is supported.
endef
$(eval $(call KernelPackage,i2c-designware-platform))
I2C_GPIO_MODULES:= \
CONFIG_I2C_GPIO:drivers/i2c/busses/i2c-gpio
define KernelPackage/i2c-gpio
$(call i2c_defaults,$(I2C_GPIO_MODULES),59)
TITLE:=GPIO-based bitbanging I2C
DEPENDS:=@GPIO_SUPPORT +kmod-i2c-algo-bit
endef
define KernelPackage/i2c-gpio/description
Kernel modules for a very simple bitbanging I2C driver utilizing the
arch-neutral GPIO API to control the SCL and SDA lines.
endef
$(eval $(call KernelPackage,i2c-gpio))
I2C_HID_MODULES:= \
CONFIG_I2C_HID_CORE:drivers/hid/i2c-hid/i2c-hid
define KernelPackage/i2c-hid
$(call i2c_defaults,$(I2C_HID_MODULES),60)
TITLE:=I2C HID support
KCONFIG+= CONFIG_I2C_HID
DEPENDS:=+kmod-drm +kmod-hid
HIDDEN:=1
endef
$(eval $(call KernelPackage,i2c-hid))
I2C_HID_ACPI_MODULES:= \
CONFIG_I2C_HID_ACPI:drivers/hid/i2c-hid/i2c-hid-acpi
define KernelPackage/i2c-hid-acpi
$(call i2c_defaults,$(I2C_HID_ACPI_MODULES),61)
TITLE:=HID over I2C transport layer ACPI driver
DEPENDS:=@TARGET_armsr_armv8||TARGET_loongarch64||TARGET_x86 +kmod-i2c-hid
endef
define KernelPackage/i2c-hid-acpi/description
Support for keyboard, touchpad, touchscreen, or any
other HID based devices which is connected to your computer via I2C.
This driver supports ACPI-based systems.
endef
$(eval $(call KernelPackage,i2c-hid-acpi))
I2C_I801_MODULES:= \
CONFIG_I2C_I801:drivers/i2c/busses/i2c-i801
define KernelPackage/i2c-i801
$(call i2c_defaults,$(I2C_I801_MODULES),59)
TITLE:=Intel I801 and compatible I2C interfaces
DEPENDS:= \
@PCI_SUPPORT @TARGET_x86 +kmod-i2c-core +kmod-i2c-smbus \
PACKAGE_kmod-i2c-mux-gpio:kmod-i2c-mux-gpio
endef
define KernelPackage/i2c-i801/description
Support for the Intel I801 family of mainboard I2C interfaces,
specifically 82801AA, 82801AB, 82801BA, 82801CA/CAM, 82801DB,
82801EB/ER (ICH5/ICH5R), 6300ESB, ICH6, ICH7, ESB2, ICH8, ICH9,
EP80579 (Tolapai), ICH10, 5/3400 Series (PCH), 6 Series (PCH),
Patsburg (PCH), DH89xxCC (PCH), Panther Point (PCH),
Lynx Point (PCH), Lynx Point-LP (PCH), Avoton (SOC),
Wellsburg (PCH), Coleto Creek (PCH), Wildcat Point (PCH),
Wildcat Point-LP (PCH), BayTrail (SOC), Sunrise Point-H (PCH),
Sunrise Point-LP (PCH), DNV (SOC), Broxton (SOC),
Lewisburg (PCH).
endef
$(eval $(call KernelPackage,i2c-i801))
I2C_MLXCPLD_MODULES:= \
CONFIG_I2C_MLXCPLD:drivers/i2c/busses/i2c-mlxcpld
define KernelPackage/i2c-mlxcpld
$(call i2c_defaults,$(I2C_MLXCPLD_MODULES),59)
TITLE:=Mellanox I2C driver
DEPENDS:=@TARGET_x86_64 +kmod-regmap-core
endef
define KernelPackage/i2c-mlxcpld/description
This exposes the Mellanox platform I2C busses
to the linux I2C layer for X86 based systems.
Controller is implemented as CPLD logic.
endef
$(eval $(call KernelPackage,i2c-mlxcpld))
I2C_MUX_MODULES:= \
CONFIG_I2C_MUX:drivers/i2c/i2c-mux
define KernelPackage/i2c-mux
$(call i2c_defaults,$(I2C_MUX_MODULES),51)
TITLE:=I2C bus multiplexing support
DEPENDS:=+kmod-i2c-core
endef
define KernelPackage/i2c-mux/description
Kernel modules for I2C bus multiplexing support
endef
$(eval $(call KernelPackage,i2c-mux))
I2C_MUX_GPIO_MODULES:= \
CONFIG_I2C_MUX_GPIO:drivers/i2c/muxes/i2c-mux-gpio
define KernelPackage/i2c-mux-gpio
$(call i2c_defaults,$(I2C_MUX_GPIO_MODULES),51)
TITLE:=GPIO-based I2C mux/switches
DEPENDS:=+kmod-i2c-mux
endef
define KernelPackage/i2c-mux-gpio/description
Kernel modules for GENERIC_GPIO I2C bus mux/switching devices
endef
$(eval $(call KernelPackage,i2c-mux-gpio))
I2C_MUX_MLXCPLD_MODULES:= \
CONFIG_I2C_MUX_MLXCPLD:drivers/i2c/muxes/i2c-mux-mlxcpld
define KernelPackage/i2c-mux-mlxcpld
$(call i2c_defaults,$(I2C_MUX_MLXCPLD_MODULES),51)
TITLE:=Mellanox CPLD based I2C multiplexer
DEPENDS:=+kmod-i2c-mlxcpld +kmod-i2c-mux
endef
define KernelPackage/i2c-mux-mlxcpld/description
This driver provides access to
I2C busses connected through a MUX, which is controlled
by a CPLD register.
endef
$(eval $(call KernelPackage,i2c-mux-mlxcpld))
I2C_MUX_PINCTRL_MODULES:= \
CONFIG_I2C_MUX_PINCTRL:drivers/i2c/muxes/i2c-mux-pinctrl
define KernelPackage/i2c-mux-pinctrl
$(call i2c_defaults,$(I2C_MUX_PINCTRL_MODULES),51)
TITLE:=Pinctrl-based I2C mux/switches
DEPENDS:=@PINCTRL_SUPPORT @USES_DEVICETREE +kmod-i2c-mux
endef
define KernelPackage/i2c-mux-pinctrl/description
Kernel modules for Pinctrl-based I2C bus mux/switching devices
endef
$(eval $(call KernelPackage,i2c-mux-pinctrl))
I2C_MUX_REG_MODULES:= \
CONFIG_I2C_MUX_REG:drivers/i2c/muxes/i2c-mux-reg
define KernelPackage/i2c-mux-reg
$(call i2c_defaults,$(I2C_MUX_REG_MODULES),51)
TITLE:=Register-based I2C mux/switches
DEPENDS:=+kmod-i2c-mux
endef
define KernelPackage/i2c-mux-reg/description
Kernel modules for register-based I2C bus mux/switching devices
endef
$(eval $(call KernelPackage,i2c-mux-reg))
I2C_MUX_PCA9541_MODULES:= \
CONFIG_I2C_MUX_PCA9541:drivers/i2c/muxes/i2c-mux-pca9541
define KernelPackage/i2c-mux-pca9541
$(call i2c_defaults,$(I2C_MUX_PCA9541_MODULES),51)
TITLE:=Philips PCA9541 I2C mux/switches
DEPENDS:=+kmod-i2c-mux
endef
define KernelPackage/i2c-mux-pca9541/description
Kernel modules for PCA9541 I2C bus mux/switching devices
endef
$(eval $(call KernelPackage,i2c-mux-pca9541))
I2C_MUX_PCA954x_MODULES:= \
CONFIG_I2C_MUX_PCA954x:drivers/i2c/muxes/i2c-mux-pca954x
define KernelPackage/i2c-mux-pca954x
$(call i2c_defaults,$(I2C_MUX_PCA954x_MODULES),51)
TITLE:=Philips PCA954x I2C mux/switches
DEPENDS:=+kmod-i2c-mux
endef
define KernelPackage/i2c-mux-pca954x/description
Kernel modules for PCA954x I2C bus mux/switching devices
endef
$(eval $(call KernelPackage,i2c-mux-pca954x))
I2C_PIIX4_MODULES:= \
CONFIG_I2C_PIIX4:drivers/i2c/busses/i2c-piix4
define KernelPackage/i2c-piix4
$(call i2c_defaults,$(I2C_PIIX4_MODULES),59)
TITLE:=Intel PIIX4 and compatible I2C interfaces
DEPENDS:=@PCI_SUPPORT @TARGET_x86 +kmod-i2c-core +kmod-i2c-smbus
endef
define KernelPackage/i2c-piix4/description
Support for the Intel PIIX4 family of mainboard I2C interfaces,
specifically Intel PIIX4, Intel 440MX, ATI IXP200, ATI IXP300,
ATI IXP400, ATI SB600, ATI SB700/SP5100, ATI SB800, AMD Hudson-2,
AMD ML, AMD CZ, Serverworks OSB4, Serverworks CSB5,
Serverworks CSB6, Serverworks HT-1000, Serverworks HT-1100 and
SMSC Victory66.
endef
$(eval $(call KernelPackage,i2c-piix4))
I2C_PXA_MODULES:= \
CONFIG_I2C_PXA:drivers/i2c/busses/i2c-pxa
define KernelPackage/i2c-pxa
$(call i2c_defaults,$(I2C_PXA_MODULES),50)
TITLE:=Intel PXA I2C bus driver
DEPENDS:=+kmod-i2c-core
endef
define KernelPackage/i2c-pxa/description
Kernel module for Intel PXA2XX I2C adapter
endef
$(eval $(call KernelPackage,i2c-pxa))
I2C_SMBUS_MODULES:= \
CONFIG_I2C_SMBUS:drivers/i2c/i2c-smbus
define KernelPackage/i2c-smbus
$(call i2c_defaults,$(I2C_SMBUS_MODULES),58)
TITLE:=SMBus-specific protocols helper
DEPENDS:=+kmod-i2c-core
endef
define KernelPackage/i2c-smbus/description
Support for the SMBus extensions to the I2C specification.
endef
$(eval $(call KernelPackage,i2c-smbus))
I2C_TINY_USB_MODULES:= \
CONFIG_I2C_TINY_USB:drivers/i2c/busses/i2c-tiny-usb
define KernelPackage/i2c-tiny-usb
$(call i2c_defaults,$(I2C_TINY_USB_MODULES),59)
TITLE:=I2C Tiny USB adaptor
DEPENDS:=@USB_SUPPORT +kmod-i2c-core +kmod-usb-core
endef
define KernelPackage/i2c-tiny-usb/description
Kernel module for the I2C Tiny USB adaptor developed
by Till Harbaum (http://www.harbaum.org/till/i2c_tiny_usb)
endef
$(eval $(call KernelPackage,i2c-tiny-usb))
Reference in a new issue View git blame Copy permalink