添加代码、Kconfig和Makefile

在linux-2.6.31/drivers/char目录下建立子目录：

bhsong@bhsong-laptop:~/develop/svn/ldd6410/linux-2.6.31/drivers/char$ mkdir driver_examples

将三个驱动hello.c、globalmem.c、globalfifo.c拷入driver_examples目录：

cd driver_examples/

cp ../../../../training/kernel/drivers/hello/hello.c ./

cp ../../../../training/kernel/drivers/globalmem/globalmem.c ./

cp ../../../../training/kernel/drivers/globalmem/globalfifo.c ./

修改drivers/char下面的Kconfig和Makefile导入driver_examples目录：

在drivers/char/Kconfig中添加：

source "drivers/char/driver_examples/Kconfig"

添加drivers/char/driver_examples/Kconfig文件：

#
# driver examples configuration
#


menuconfig DRIVER_EXAMPLE

    tristate "driver examples in 'Explain Linux Device Drivers in detail'"

    ---help---

      say Yes to build-in hello world, globalmem, globalfifo, say M to get 

      those kernel modules

if DRIVER_EXAMPLE


config HELLO_WORLD

    tristate "Hello World"

    ---help---

      To compile this driver as a module, choose M here; the module will be

      called hello.mem


config GLOBALMEM

    tristate "globalmem"

    ---help---

      To  compile this driver as a module, choose M here; the module will be

      called globalmem.


config GLOBALFIFO

    tristate "globalfifo"

    ---help---

      To  compile this driver as a module, choose M here; the module will be

      called globalfifo.


endif # DRIVER_EXAMPLE

这将形成如下菜单：

 driver examples in 'Explain Linux Device Drivers in detail' ─────────────────────────────┐

  │  Arrow keys navigate the menu.  <Enter> selects submenus --->.  Highlighted letters are hotkeys.  Pressing <Y>        │  

  │  includes, <N> excludes, <M> modularizes features.  Press <Esc><Esc> to exit, <?> for Help, </> for Search.  Legend:  │  

  │  [*] built-in  [ ] excluded  <M> module  < > module capable                                                           │  

  │                                                                                                                       │  

  │ ┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐ │  

  │ │                      --- driver examples in 'Explain Linux Device Drivers in detail'                              │ │  

  │ │                      < >   Hello World (NEW)                                                                      │ │  

  │ │                      < >   globalmem (NEW)                                                                        │ │  

  │ │                      < >   globalfifo (NEW)                                                                       │ │  

  │ │                                                                                                                   │ │  

  │ │                                                                                                                   │ │  

  │ │

在drivers/char/Makefile中添加：

obj-$(CONFIG_DRIVER_EXAMPLE)        += driver_examples/

添加drivers/char/driver_examples/Makefile文件：

obj-$(CONFIG_HELLO_WORLD)       += hello.o

obj-$(CONFIG_GLOBALMEM)         += globalmem.o

obj-$(CONFIG_GLOBALFIFO)        += globalfifo.o

相关的Kconfig和Makefile patch如下：

Index: drivers/char/Kconfig
===================================================================
--- drivers/char/Kconfig        (revision 87)
+++ drivers/char/Kconfig        (working copy)Index: drivers/char/driver_examples/Makefile
===================================================================
--- drivers/char/driver_examples/Makefile       (revision 0)
+++ drivers/char/driver_examples/Makefile       (revision 0)
@@ -0,0 +1,3 @@
+obj-$(CONFIG_HELLO_WORLD)              += hello.o
+obj-$(CONFIG_GLOBALMEM)                += globalmem.o
+obj-$(CONFIG_GLOBALFIFO)               += globalfifo.o
@@ -1110,5 +1110,7 @@

 

 source "drivers/s390/char/Kconfig"

 
+source "drivers/char/driver_examples/Kconfig"
+

 endmenu

 
Index: drivers/char/Makefile
===================================================================
--- drivers/char/Makefile       (revision 87)
+++ drivers/char/Makefile       (working copy)
@@ -111,6 +111,8 @@

 obj-$(CONFIG_JS_RTC)           += js-rtc.o

 js-rtc-y = rtc.o

 
+obj-$(CONFIG_DRIVER_EXAMPLE)           += driver_examples/
+

 # Files generated that shall be removed upon make clean

 clean-files := consolemap_deftbl.c defkeymap.c

 
Index: drivers/char/driver_examples/Kconfig
===================================================================
--- drivers/char/driver_examples/Kconfig        (revision 0)
+++ drivers/char/driver_examples/Kconfig        (revision 0)
@@ -0,0 +1,31 @@
+#
+# driver examples configuration
+#
+
+menuconfig DRIVER_EXAMPLE
+       tristate "driver examples in 'Explain Linux Device Drivers in detail'"
+       ---help---
+         say Yes to build-in hello world, globalmem, globalfifo, say M to get
+         those kernel modules
+
+if DRIVER_EXAMPLE
+
+config HELLO_WORLD
+       tristate "Hello World"
+       ---help---
+         To compile this driver as a module, choose M here; the module will be
+         called hello.
+
+config GLOBALMEM
+       tristate "globalmem"
+       ---help---
+         To  compile this driver as a module, choose M here; the module will be
+         called globalmem.
+
+config GLOBALFIFO
+       tristate "globalfifo"
+       ---help---
+         To  compile this driver as a module, choose M here; the module will be
+         called globalfifo.
+
+endif # DRIVER_EXAMPLE
+Index: drivers/char/Kconfig
===================================================================
--- drivers/char/Kconfig        (revision 87)
+++ drivers/char/Kconfig        (working copy)
@@ -1110,5 +1110,7 @@

 

 source "drivers/s390/char/Kconfig"

 
+source "drivers/char/driver_examples/Kconfig"
+

 endmenu

 
Index: drivers/char/Makefile
===================================================================
--- drivers/char/Makefile       (revision 87)
+++ drivers/char/Makefile       (working copy)
@@ -111,6 +111,8 @@

 obj-$(CONFIG_JS_RTC)           += js-rtc.o

 js-rtc-y = rtc.o

 
+obj-$(CONFIG_DRIVER_EXAMPLE)           += driver_examples/
+

 # Files generated that shall be removed upon make clean

 clean-files := consolemap_deftbl.c defkeymap.c

 
Index: drivers/char/driver_examples/Kconfig
===================================================================
--- drivers/char/driver_examples/Kconfig        (revision 0)
+++ drivers/char/driver_examples/Kconfig        (revision 0)
@@ -0,0 +1,31 @@
+#
+# driver examples configuration
+#
+
+menuconfig DRIVER_EXAMPLE
+       tristate "driver examples in 'Explain Linux Device Drivers in detail'"
+       ---help---
+         say Yes to build-in hello world, globalmem, globalfifo, say M to get
+         those kernel modules
+
+if DRIVER_EXAMPLE
+
+config HELLO_WORLD
+       tristate "Hello World"
+       ---help---
+         To compile this driver as a module, choose M here; the module will be
+         called hello.
+
+config GLOBALMEM
+       tristate "globalmem"
+       ---help---
+         To  compile this driver as a module, choose M here; the module will be
+         called globalmem.
+
+config GLOBALFIFO
+       tristate "globalfifo"
+       ---help---
+         To  compile this driver as a module, choose M here; the module will be
+         called globalfifo.
+
+endif # DRIVER_EXAMPLE
Index: drivers/char/driver_examples/Makefile
===================================================================
--- drivers/char/driver_examples/Makefile       (revision 0)
+++ drivers/char/driver_examples/Makefile       (revision 0)
@@ -0,0 +1,3 @@
+obj-$(CONFIG_HELLO_WORLD)              += hello.o
+obj-$(CONFIG_GLOBALMEM)                += globalmem.o