utils/ucmb/Makefile

   1 #
   2 # Copyright (C) 2009 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6
   7 include $(TOPDIR)/rules.mk
   8 include $(INCLUDE_DIR)/kernel.mk
   9
  10 PKG_NAME:=ucmb
  11 PKG_RELEASE:=1
  12
  13 include $(INCLUDE_DIR)/package.mk
  14
  15
  16 define KernelPackage/ucmb
  17   SUBMENU:=Other modules
  18   DEPENDS:=@LINUX_2_6 \
  19           @!LINUX_2_6_21 @!LINUX_2_6_22 @!LINUX_2_6_23 @!LINUX_2_6_24 \
  20           @!LINUX_2_6_25 @!LINUX_2_6_26 @!LINUX_2_6_27 \
  21           +kmod-spi-gpio +kmod-crc16
  22   KCONFIG:=CONFIG_SPI=y \
  23           CONFIG_SPI_MASTER=y
  24   TITLE:=Microcontroller Message Bus
  25   FILES:=$(PKG_BUILD_DIR)/ucmb.$(LINUX_KMOD_SUFFIX)
  26   AUTOLOAD:=$(call AutoLoad,93,ucmb)
  27 endef
  28
  29 define KernelPackage/ucmb/description
  30         The Microcontroller Message Bus is a tiny SPI-GPIO based communication
  31         channel used to talk to microcontrollers over GPIO pins.
  32         The lowlevel protocol is CRC16 protected, so one can be pretty sure
  33         that the data transmitted and received through the /dev/ucmb node is not corrupted.
  34         So no further checks should be needed at upper protocol layers.
  35         The device node considers every read/write to be one packet. The maximum packet
  36         size is either PAGE_SIZE (at least 4kb) or the microcontroller specific packet size
  37         limit, which is likely to be a lot smaller than PAGE_SIZE.
  38         To register an ucmb device, simply create a struct ucmb_platform_data
  39         and register it via ucmb_device_register() from another kernel module.
  40         Example implementations for the microcontroller-side code can be found in
  41         the utils/ucmb/microcontroller_examples subdirectory of the OpenWRT packages feed.
  42 endef
  43
  44 define Build/Prepare
  45         $(CP) ./driver/* $(PKG_BUILD_DIR)/
  46 endef
  47
  48 define Build/Compile
  49         $(MAKE) -C "$(LINUX_DIR)" \
  50                 CROSS_COMPILE="$(TARGET_CROSS)" \
  51                 ARCH="$(LINUX_KARCH)" \
  52                 SUBDIRS="$(PKG_BUILD_DIR)" \
  53                 EXTRA_CFLAGS="$(BUILDFLAGS)" \
  54                 modules
  55 endef
  56
  57 define Build/InstallDev
  58         $(INSTALL_DIR) $(1)/usr/include
  59         $(CP) \
  60                 $(PKG_BUILD_DIR)/ucmb.h \
  61                 $(1)/usr/include
  62 endef
  63
  64 $(eval $(call KernelPackage,ucmb))