From 6bb50e4df15653864a4ee274f0bdad76b196f1e5 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Mon, 2 Sep 2013 08:45:29 +0000
Subject: package/kernel: add spi-gpio-custom module

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
---
 package/kernel/spi-gpio-custom/Makefile | 53 +++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 package/kernel/spi-gpio-custom/Makefile

(limited to 'package/kernel/spi-gpio-custom/Makefile')

diff --git a/package/kernel/spi-gpio-custom/Makefile b/package/kernel/spi-gpio-custom/Makefile
new file mode 100644
index 0000000000..3282f0638c
--- /dev/null
+++ b/package/kernel/spi-gpio-custom/Makefile
@@ -0,0 +1,53 @@
+#
+# Copyright (C) 2008 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=spi-gpio-custom
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/spi-gpio-custom
+  SUBMENU:=SPI Support
+  TITLE:=Custom GPIO-based SPI device
+  DEPENDS:=@GPIO_SUPPORT +kmod-spi-bitbang +kmod-spi-gpio +kmod-spi-dev
+  FILES:=$(PKG_BUILD_DIR)/spi-gpio-custom.ko
+  KCONFIG:=
+endef
+
+define KernelPackage/spi-gpio-custom/description
+ Kernel module for register a custom spi-gpio platform device.
+endef
+
+EXTRA_KCONFIG:= \
+	CONFIG_SPI_GPIO_CUSTOM=m
+
+EXTRA_CFLAGS:= \
+	$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
+	$(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG)))) \
+
+MAKE_OPTS:= \
+	ARCH="$(LINUX_KARCH)" \
+	CROSS_COMPILE="$(TARGET_CROSS)" \
+	SUBDIRS="$(PKG_BUILD_DIR)" \
+	EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
+	$(EXTRA_KCONFIG)
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+	$(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+define Build/Compile
+	$(MAKE) -C "$(LINUX_DIR)" \
+		$(MAKE_OPTS) \
+		modules
+endef
+
+$(eval $(call KernelPackage,spi-gpio-custom))
-- 
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