From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-fx0-f46.google.com ([209.85.161.46]:49577 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754590Ab1G2Hbc convert rfc822-to-8bit (ORCPT ); Fri, 29 Jul 2011 03:31:32 -0400 Received: by fxh19 with SMTP id 19so2020487fxh.19 for ; Fri, 29 Jul 2011 00:31:31 -0700 (PDT) Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes To: linux-media@vger.kernel.org Date: Fri, 29 Jul 2011 09:31:28 +0200 Cc: s.hauer@pengutronix.de Subject: mx2_camera driver on mx27ipcam: dma_alloc_coherent size failed MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT From: "Jan Pohanka" Message-ID: Sender: linux-media-owner@vger.kernel.org List-ID: Dear all, I'm playing with imx27ipcam reference design and I would like to use more recent (or actual) kernel than the one in BSP (2.6.19). I had no problems with running 2.6.39 version from mainline, and now I want to get some signal from CMOS chip. As there is no driver for mt9d131 yet I modified the mt9m111 driver to communicate wit it. Driver gets correctly initialized mx2-camera mx2-camera.0: initialising mx2-camera mx2-camera.0: Camera clock frequency: 6250000 mx2-camera mx2-camera.0: Using EMMA camera 0-0: Probing 0-0 mx27ipcam_camera_power: 1 mx27ipcam_camera_reset mx2-camera mx2-camera.0: Camera driver attached to camera 0 mt9m111 0-0048: read reg.000 -> 1519 mt9m111 0-0048: Detected a MT9D131 chip ID 1519 camera 0-0: Found 8 supported formats. mx2-camera mx2-camera.0: Camera driver detached from camera 0 mx27ipcam_camera_power: 0 mx2-camera mx2-camera.0: MX2 Camera (CSI) driver probed, clock frequency: 6250000 For example this command should capture several frames ffmpeg -s qvga -r 30 -t 2 -pix_fmt yuyv422 -f video4linux2 -i /dev/video0 temp_vid.h263 however there is some problems with dma_contig allocation mx2-camera mx2-camera.0: dma_alloc_coherent size 155648 failed [video4linux2 @ 0xfa8c50]mmap: Cannot allocate memory /dev/video0: Input/output error ... camera 0-0: mmap called, vma=0xc397fd30 camera 0-0: vma start=0x4014c000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fcd8 camera 0-0: vma start=0x40ee8000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fc80 camera 0-0: vma start=0x40fa4000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fc28 camera 0-0: vma start=0x4109a000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fbd0 camera 0-0: vma start=0x41124000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fb78 camera 0-0: vma start=0x4118a000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fb20 camera 0-0: vma start=0x41241000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fac8 camera 0-0: vma start=0x41277000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fa70 camera 0-0: vma start=0x412c3000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397fa18 camera 0-0: vma start=0x41377000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397f9c0 camera 0-0: vma start=0x41416000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397f968 camera 0-0: vma start=0x4147f000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397f910 camera 0-0: vma start=0x414a5000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397f8b8 camera 0-0: vma start=0x41542000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397f860 camera 0-0: vma start=0x415ba000, size=155648, ret=0 camera 0-0: mmap called, vma=0xc397f808 mx2-camera mx2-camera.0: dma_alloc_coherent size 155648 failed camera 0-0: vma start=0x41667000, size=155648, ret=-12 mx2-camera mx2-camera.0: Camera driver detached from camera 0 mx27ipcam_camera_power: 0 camera 0-0: camera device close It seems like there is no dma buffer initialized for mx2_camera driver. Could please anyone give me some hint how to deal with it? regards Jan -- Tato zpráva byla vytvořena převratným poštovním klientem Opery: http://www.opera.com/mail/