From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp1-g21.free.fr ([212.27.42.1]:45570 "EHLO smtp1-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750844Ab1IEHTb convert rfc822-to-8bit (ORCPT ); Mon, 5 Sep 2011 03:19:31 -0400 Received: from tele (unknown [IPv6:2a01:e35:2f5c:9de0:212:bfff:fe1e:8db5]) by smtp1-g21.free.fr (Postfix) with ESMTP id 7CD43940099 for ; Mon, 5 Sep 2011 09:19:20 +0200 (CEST) Date: Mon, 5 Sep 2011 09:19:59 +0200 From: Jean-Francois Moine To: linux-media@vger.kernel.org Subject: Re: spca1528 device (Device 015: ID 04fc:1528 Sunplus Technology)..libv4l2: error turning on stream: Timer expired issue Message-ID: <20110905091959.727346d5@tele> In-Reply-To: <4E63D3F2.8090500@gmail.com> References: <4E63D3F2.8090500@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-media-owner@vger.kernel.org List-ID: On Sun, 04 Sep 2011 15:39:30 -0400 Mauricio Henriquez wrote: > Recently I'm trying to make work a Sunplus crappy mini HD USB camera, lsusb > list this info related to the device: > > Picture Transfer Protocol (PIMA 15470) > Bus 001 Device 015: ID 04fc:1528 Sunplus Technology Co., Ltd > > idVendor 0x04fc Sunplus Technology Co., Ltd > idProduct 0x1528 > bcdDevice 1.00 > iManufacturer 1 Sunplus Co Ltd > iProduct 2 General Image Devic > iSerial 0 > ... > > Using the gspca-2.13.6 on my Fed12 (2.6.31.6-166.fc12.i686.PAE kernel), the > device is listed as /dev/video1 and no error doing a dmesg...but trying to > make it work, let say with xawtv, I get: [snip] Hi Mauricio, The problem seems tied to the alternate setting. It must be the #3 while the lastest versions of gspca compute a "best" one. May you apply the following patch to gspca-2.13.6? ----------------------8<---------------------- --- build/spca1528.c.orig 2011-09-05 08:41:54.000000000 +0200 +++ build/spca1528.c 2011-09-05 08:53:51.000000000 +0200 @@ -307,8 +307,6 @@ sd->color = COLOR_DEF; sd->sharpness = SHARPNESS_DEF; - gspca_dev->nbalt = 4; /* use alternate setting 3 */ - return 0; } @@ -349,6 +347,9 @@ reg_r(gspca_dev, 0x25, 0x0004, 1); reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06); reg_r(gspca_dev, 0x27, 0x0000, 1); + + gspca_dev->alt = 4; /* use alternate setting 3 */ + return gspca_dev->usb_err; } ----------------------8<---------------------- (Theodore, this webcam may work in mass storage mode with ID 04fc:0171. In webcam mode with ID 04fc:1528, it offers 3 interfaces: interface 0 contains only an interrupt endpoint, interface 1 is the webcam with only isochronous endpoints and interface 2 contains bulk in, bulk out and interrupt in endpoints - I don't know how to use the interfaces 0 and 2, but sure the interface 2 could be used to access the camera images) -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/