前面我讲解了如何移植spca5xxle到立宇泰ARMSYS244O开发板。但是spca5xxle只能输出JPG格式的图像数据，如果我们想要RGB格式的数据就必须自己解码，如果移植的是完整的spca5xx驱动就不会有这些问题。所以今天我将spca5xx-v4l1goodbye到立宇泰ARMSYS244O开发板上。 我的开发板是立宇泰ARMSYS2440，内核是2.4.20_elfin-d1.5。1、首先下源码包spca5xx-v4l1goodbye.tar.gz，然后解压#tar -xzvf spca5xx-v4l1goodbye.tar.gz解压后得到一个spca5xx-v4l1goodbye目录，里边是spca5xx-v4l1goodbye的源代码。 2、修改Makefile#cd spca5xx-v4l1goodbye#gedit Makefile&将 ifneq ($(shell uname -r | cut -d. -f1,2), 2.4) ifneq ($(KERNELRELEASE),) # We were called by kbuildCFLAGS = $(DEFINES) obj-m = spca5xx.ospca5xx-objs := drivers/usb/spca5xx.o drivers/usb/spcadecoder.o else # We were called from command line KERNEL_VERSION = `uname -r`KERNELDIR := /lib/modules/$(KERNEL_VERSION)/buildPWD := $(shell pwd)MODULE_INSTALLDIR = /lib/modules/$(KERNEL_VERSION)/kernel/drivers/usb/media/ # Targets, don't change!default:@echo ' Building SPCA5XX driver for 2.5/2.6 kernel.'@echo ' Remember: you must have read/write access to your kernel source tree.'$(MAKE) -C $(KERNELDIR) SUBDIRS=$(PWD) CC=$(CC) modules install:mkdir -p $(MODULE_INSTALLDIR)rm -f $(MODULE_INSTALLDIR)spca50x.korm -f $(MODULE_INSTALLDIR)et61x.koinstall -c -m 0644 spca5xx.ko $(MODULE_INSTALLDIR)/sbin/depmod -ae uninstall:rm -f $(MODULE_INSTALLDIR)/spca5xx.ko/sbin/depmod -aq endif else # kernel version test以及endif # End kernel version test删除，应为这些都是针对2.6内核的，我们不需要。将KERNEL_VERSION = `uname -r`替换为自己的内核版本号，我的是KERNEL_VERSION = 2.4.20_elfin-d1.5将KINCLUDE = /lib/modules/$(KERNEL_VERSION)/build/include替换为自己的内核的代码路径KINCLUDE = /root/kenerl2440_64m30/include将CC = gccLD = ld替换为CC = /usr/local/arm/2.95.3/bin/arm-linux-gccLD = /usr/local/arm/2.95.3/bin/arm-linux-ld 3、修改scpca5xx目录下spca5xx.c找到定义spca5xx_driver的地方，将原来的定义 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,22)static struct usb_driver spca5xx_driver = {#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16).owner = THIS_MODULE,#endif.name = "spca5xx",.id_table = device_table,.probe = spca5xx_probe,.disconnect = spca5xx_disconnect};#elsestatic struct usb_driver spca5xx_driver = {#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,20)THIS_MODULE,#endif"spca5xx",spca5xx_probe,spca5xx_disconnect,{NULL, NULL}};#endif 替换为下边的内容： static struct usb_driver spca5xx_driver = {name: "spca5xx",id_table: device_table,probe: spca5xx_probe,disconnect: spca5xx_disconnect};找到spca5xx_probe函数定义的地方，将原来的 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)static intspca5xx_probe(struct usb_interface *intf, const struct usb_device_id *id)#elsestatic void *spca5xx_probe(struct usb_device *dev, unsigned int ifnum,const struct usb_device_id *id)#endif 替换为： static void *spca5xx_probe (struct usb_device *dev, unsigned int ifnum,const struct usb_device_id *id)如果不修改这两个地方，编译不会有问题，但是驱动不能工作。 4、编译#make 在spca5xx-v4l1goodbye目录下生成spca5xx.o文件，这就是我们需要的驱动。将这个文件拷到开发板的文件系统里。 5、将驱动加载到内核#insmod spca5xx.oUsing spca5xx.odrivers/usb/spca5xx.c: Unable to initialise /proc/video/spca50x//提示无法初始化，先不管usb.c: registered new driver spca5xxdrivers/usb/spca5xx.c: spca5xx driver 00.60.00.1 registered 插上你的zc301摄像头，就可以看到如下的信息[root@lyt /]# hub.c: new USB device usb-ohci-1, assigned address 2Manufacturer: Vimicro Corp.Product: PC Cameradrivers/usb/spca5xx.c: USB SPCA5XX camera found. Type Vimicro Zc301P 0x303bdrivers/usb/spca5xx.c: [spca5xx_probe:5488] Camera type JPEG drivers/usb/zc3xx.h: [zc3xx_config:527] Find Sensor PB0330drivers/usb/spca5xx.c: [spca5xx_getcapability:1767] maxw 640 maxh 480 minw 176 minh 144同时在/dev下创建了v4l/video0设备文件。恭喜你的摄像头现在可以使用了。 更多文章请点击这里查看：http://www.hzlitai.com.cn/article/ARM9-article/1-16.html

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