DM6446视频驱动问题求助

贴驱动没有用,估计你们设计应该跟原厂板是一样的,你们拿到的montavista内核里的驱动应该是没有问题的.先贴贴启动信息吧 有没有启动udev?如果没有启动udev的话设备是不会自己出现的,可以手动创建 lrwxrwxrwx 1 root root 10 Apr 5 13:22 video0 -> v4l/video0 lrwxrwxrwx 1 root root 10 Apr 5 13:22 video2 -> v4l/video2 lrwxrwxrwx 1 root root 10 Apr 5 13:22 video3 -> v4l/video3 crw-r--r-- 1 root root 81, 0 Jan 14 15:13 video0 crw-r--r-- 1 root root 81, 2 Jan 14 15:13 video2 crw-r--r-- 1 root root 81, 3 Jan 14 15:13 video3

非常感谢您的指导，由于我是从底层硬件开始做起来的，所以linux下的视频的东西不是特别懂。我想问您下如果是自己手动创建的话，具体操作步奏是什么？还有就是手动创建以后没有什么简单的办法可以验证驱动是否工作？ 具体启动信息如下： Linux version 2.6.10_mvl401-davinci_evm (root@localhost.localdomain) (gcc versio n 3.4.3 (MontaVista 3.4.3-25.0.30.0501131 2005-07-23)) #55 Fri Jun 12 16:33:15 C ST 2009 CPU: ARM926EJ-Sid(wb) [41069265] revision 5 (ARMv5TEJ) CPU0: D VIVT write-back cache CPU0: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets CPU0: D cache: 8192 bytes, associativity 4, 32 byte lines, 64 sets Machine: DaVinci EVM Memory policy: ECC disabled, Data cache writeback Built 1 zonelists Kernel command line: mem=54M console=ttyS0,115200n8 root=/dev/nfs noinitrd rw ip =dhcp nfsroot=59.64.155.176:/opt/nfs video=dm64xxfb:output=pal davinci-vpfe.devi ce_type=1 PID hash table entries: 256 (order: 8, 4096 bytes) Console: colour dummy device 80x30 Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) Memory: 54MB = 54MB total Memory: 51328KB available (2614K code, 623 Mount-cache hash table entries: 512 (order: 0, 4096 bytes) CPU: Testing write buffer coherency: ok spawn_desched_task(00000000) desched cpu_callback 3/00000000 ksoftirqd started up. desched cpu_callback 2/00000000 desched thread 0 started up. NET: Registered protocol family 16 Registering platform device 'nor_davinci.0'. Parent at platform Registering platform device 'nand_davinci.0'. Parent at platform Registering platform device 'musb_hdrc'. Parent at platform DaVinci I2C DEBUG: 16:24:42 Jun 12 2009 Registering platform device 'i2c'. Parent at platform SCSI subsystem initialized usbcore: registered new driver usbfs usbcore: registered new driver hub devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au) devfs: boot_options: 0x1 NTFS driver 2.1.22 [Flags: R/W]. JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc. yaffs Jun 12 2009 16:24:12 Installing. Registering platform device 'davincifb.0'. Parent at platform Console: switching to colour frame buffer device 90x36 Registering platform device 'davinci_resiz Registering platform device 'davinci_previewer.2'. Parent at platform Registering platform device 'davinci_pwm0.0'. Parent at platform Registering platform device 'davinci_pwm1.1'. Parent at platform Registering platform device 'davinci_pwm2.2'. Parent at platform Serial: 8250/16550 driver $Revision: 1.90 $ 2 ports, IRQ sharing disabled Registering platform device 'serial8250'. Parent at platform ttyS0 at MMIO 0x1c20000 (irq = 40) is a 16550A ttyS1 at MMIO 0x1c20400 (irq = 41) is a 16550A io scheduler noop regi io scheduler anticipatory registered RAMDISK driver initialized: 1 RAM disks of 32768K size 1024 blocksize Registering platform device 'ti_davinci_emac'. Parent at platform TI DaVinci EMAC Linux version updated 4.0 TI DaVinci EMAC: Installed 1 instances. netconsole: not configured, aborting i2c /dev entries driver Linux video capture interface: v1.00 Registering platform device 'vpfe.1'. Parent at platform TVP5150 support for SEED_DVS6446 by Stephen Zhang elevator: using anticipatory as default io scheduler DaVinci NAND Controller rev. 2.1 NAND device: Manufacturer ID: 0xec, Chip ID: 0x36 (Samsung NAND 64MiB 1,8V 8-bit ) Scanning device for bad blocks Creating 1 MTD partitions on "NAND 64MiB 1,8V 8-bit": 0x00460000-0x04000000 : "Flash Partition 0" Initializing USB Mass Storage driver... usbcore: registered new driver usb-storage USB Mass Storage support registered. usbcore: registered new driver usbhid drivers/usb/input/hid-core.c: v2.0:USB HID core driver drivers/usb/media/konicawc.c: Konica Webcam driver v1.4 drivers/usb/media/usbvideo.c: usbvideo_register: module == NULL! usbcore: registered new driver konicawc usbcore: registered new driver ov511 drivers/usb/media/ov511.c: v1.64 for Linux 2.5 : ov511 USB Camera Driver drivers/usb/media/se401.c: SE401 usb camera driver version 0.24 registering usbcore: registered new driver se401 usbcore: registered new driver stv680 drivers/usb/media/stv680.c: [usb_stv680_init:1492] STV(i): usb camera driver ver sion v0.25 registering drivers/usb/media/stv680.c: STV0680 USB Camera mice: PS/2 mouse device common for all mice musb_hdrc: version 2.2a/db-0.4.8 [pio] [host] [debug=0] musb_hdrc: USB Host mode controller at c3866000 using PIO, IRQ 12 musb_hdrc musb_hdrc: new USB bus registered, assigned bus number 1 hub 1-0:1.0: USB hub found hub 1-0:1.0: 1 port detected Registering platform device 'mmc0.1'. Parent at platform : Supporting 4-bit mode NET: Registered protocol family 2 IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 4096 bind 8192) NET: Registered protocol family 1 NET: Registered protocol family 17 Sending DHCP requests ., OK IP-Config: Got DHCP answer from 211.68.71.4, my address is 59.64.155.54 IP-Config: Complete: device=eth0, addr=59.64.155.54, mask=255.255.255.0, gw=59.64.155.1, host=59.64.155.54, domain=bupt.edu.cn, nis-domain=(none), bootserver=211.68.71.4, rootserver=59.64.155.176, rootpath= Looking up port of RPC 100003/2 on 59.64.155.176 Looking up port of RPC 100005/1 on 59.64.155.176 VFS: Mounted root (nfs file Mounted devfs on /dev Freeing init memory: 144K INIT: version 2.85 booting Mounting a tmpfs over /dev...done. Creating initial device nodes...done. Activating swap...done. Remounting root filesystem...done. Calculating module dependencies WARNING: Couldn't open directory /lib/modules/2.6.10_mvl401-davinci_evm: No such file or directory FATAL: Could not open /lib/modules/2.6.10_mvl401-davinci_evm/modules.dep.temp fo r writing: No such file or directory Loading modules: Starting checking all file systems: fsck fsck 1.35 (28-Feb-2004) Starting mounting local filesystems: mount nothing was mounted Cleaning: /etc/network/ifstate. Setting up IP spoofing protection: rp_filter. Disable TCP/IP Explicit Congestion Notification: done. Starting network interfaces: done. Starting hotplug subsystem: pci pci [success] usb usb [success] isapnp isapnp [success] ide ide [success] input input [success] scsi scsi [success] done. Starting portmap daemon: portmap. Cleaning: /tmp /var/lock /var/run done. Setting pseudo-terminal access permissions...done. Updating /etc/motd...done. INIT: Entering runlevel: 3 Starting system log daemon: syslogd klogd. Starting NFS common utilities: statd lockd. Starting internet superserver: inetd. Starting MontaVista target tools daemon: mvltdmvltd version 2.1 MontaVista Softw are,Inc. 然后就启动成功了

Linux video capture interface: v1.00 Registering platform device 'vpfe.1'. Parent at platform TVP5150 support for SEED_DVS6446 by Stephen Zhang 看起来没啥问题, 你建设备节点吧 mkdir /dev/v4l mknod /dev/v4l/video0 c 81 0 mknod /dev/v4l/video1 c 81 1 mknod /dev/v4l/video2 c 81 2 mknod /dev/v4l/video3 c 81 3 ln -s /dev/v4l/video0 /dev/video0 ln -s /dev/v4l/video1 /dev/video1 ln -s /dev/v4l/video2 /dev/video2 ln -s /dev/v4l/video3 /dev/video3 然后你在板子上cat /dev/video0 如果设备没有注册会有提醒,否则就说明该设备已经注册了,一般问题就不大了 如果有问题你首先要确认硬件有没有问题,5146跟cpu就那么几根线连着,你看看有没有信号吧

恩，太感谢了。我用I2C控制的TVP5146视频解码器，设备主节点号也是81吗？我照您说的方法执行了一下，节点也都创建了，在dev目录下显示如下： lrwxrwxrwx 1 root root 10 Jun 6 11:57 video0 -> v4l/video0 lrwxrwxrwx 1 root root 10 Jun 6 11:57 video1 -> v4l/video1 lrwxrwxrwx 1 root root 10 Jun 6 11:57 video2 -> v4l/video2 lrwxrwxrwx 1 root root 10 Jun 6 11:57 video3 -> v4l/video3 我还想确认下驱动是否工作，用如下方法可以吗？ root@59.64.155.54:/dev# cat video0 cat: video0: No such device 如果可以，是不是说我的驱动还是没有把芯片驱起来？

不太了解你用的那个芯片,但从驱动和打印信息看现在的video0应该是不对的,而且你在内核中添加了许多USB摄像头的驱动.这些也占用节点号的.也就是说你的video0很可能是USB摄像头．

哦，USB的摄像头驱动倒是可以删掉，这样倒是可以排除一些干扰。 像这个解码芯片的主节点号可以通过哪些方法查到呢？TI的相关文档我都看了，没有提到节点创建的问题，他们的文档关于视频采集的部分都很简单，给我的感觉就是驱动编译进内核以后，/dev下就会有Video0这个文件。很是困惑啊！！

我在内核源码树的Documentation device.txt下面找到我这个内核视频采集的主节点也是81，启动后执行cat /proc/devices结果如下： root@59.64.155.54:~# cat /proc/devices Character devices: 1 mem 2 pty 3 ttyp 4 /dev/vc/0 4 tty 4 ttyS 5 /dev/tty 5 /dev/console 5 /dev/ptmx 7 vcs 10 misc 13 input 29 fb 81 video4linux 89 i2c 90 mtd 128 ptm 136 pts 180 usb 251 PWM 252 DaVinciPreviewer 253 Resizer 254 devfs 但在执行了版主大人指点的节点创建办法后，执行cat /dev/video0 依然提示cat: video0: No such device 是不是可以说驱动已经跑起来了，现在很有可能是硬件的问题？

那你这个就不是因为设备节点创建的问题了,估计是因为TVP5146的问题设备没有注册成 功,另外,video0是vpfe的设备,tvp5146通过这个设备来进行控制 建议你首先确认硬件没有问题,上面已经跟你说了,尤其是自己做的板子,先硬件后软件吧 【 在 zhurj123 (小竹) 的大作中提到: 】 : 恩，太感谢了。我用I2C控制的TVP5146视频解码器，设备主节点号也是81吗？我照您说的方法执行了一下，节点也都创建了，在dev目录下显示如下： : lrwxrwxrwx 1 root root 10 Jun 6 11:57 video0 -> v4l/video0 : lrwxrwxrwx 1 root root 10 Jun 6 11:57 video1 -> v4l/video1 : ...................

另外,也make menuconfig看一下device driver->multimedia devices->video capture adaper 选上 Davinci Video Capture 之后下面有没有TVP5146选上?编译内核之后,tvp5146.c文件有没有被编译? 看你的log: TVP5150 support for SEED_DVS6446 by Stephen Zhang 开始以为是驱动版本问题,后来想想会不会是因为你忘了配置选错了设备?