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The package makes it possible to create custom SPI buses via GPIO lines. This module is based on i2c-gpio-custom and allows to configure an SPI bus via GPIO lines and expose it to userspace without rebuilding the kernel. This is maily intended to connect microcontrollers and other simple SPI devices without making an ad-hoc kernel driver. Signed-off-by: Marco Burato <zmaster.adsl@gmail.com> [juhosg: - change subject, - extend and reformat commit message, - cleanup checkpatch errors/warnings in module source] Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 37872
54 lines
1.2 KiB
Makefile
54 lines
1.2 KiB
Makefile
#
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# Copyright (C) 2008 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/kernel.mk
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PKG_NAME:=spi-gpio-custom
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PKG_RELEASE:=1
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include $(INCLUDE_DIR)/package.mk
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define KernelPackage/spi-gpio-custom
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SUBMENU:=SPI Support
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TITLE:=Custom GPIO-based SPI device
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DEPENDS:=@GPIO_SUPPORT +kmod-spi-bitbang +kmod-spi-gpio +kmod-spi-dev
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FILES:=$(PKG_BUILD_DIR)/spi-gpio-custom.ko
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KCONFIG:=
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endef
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define KernelPackage/spi-gpio-custom/description
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Kernel module for register a custom spi-gpio platform device.
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endef
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EXTRA_KCONFIG:= \
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CONFIG_SPI_GPIO_CUSTOM=m
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EXTRA_CFLAGS:= \
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$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
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$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG)))) \
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MAKE_OPTS:= \
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ARCH="$(LINUX_KARCH)" \
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CROSS_COMPILE="$(TARGET_CROSS)" \
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SUBDIRS="$(PKG_BUILD_DIR)" \
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EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
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$(EXTRA_KCONFIG)
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define Build/Prepare
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mkdir -p $(PKG_BUILD_DIR)
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$(CP) ./src/* $(PKG_BUILD_DIR)/
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endef
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define Build/Compile
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$(MAKE) -C "$(LINUX_DIR)" \
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$(MAKE_OPTS) \
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modules
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endef
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$(eval $(call KernelPackage,spi-gpio-custom))
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