Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261501AbVECMsk (ORCPT ); Tue, 3 May 2005 08:48:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261506AbVECMsk (ORCPT ); Tue, 3 May 2005 08:48:40 -0400 Received: from smtp4.brturbo.com.br ([200.199.201.180]:28128 "EHLO smtp4.brturbo.com.br") by vger.kernel.org with ESMTP id S261501AbVECMsh (ORCPT ); Tue, 3 May 2005 08:48:37 -0400 Message-ID: <42777318.2070508@brturbo.com.br> Date: Tue, 03 May 2005 09:48:24 -0300 From: Mauro Carvalho Chehab User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050322) X-Accept-Language: pt-br, pt, es, en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: [2.6 patch] PAL-M support fix for CX88 chipsets X-Enigmail-Version: 0.90.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1640 Lines: 40 This patch fixes PAL-M chroma subcarrier frequency (FSC) to its correct value of 3.5756115 MHz and adjusts horizontal total samples for PAL-M, according with formula Line Draw Time / (4*FSC), where Line Draw Time is 63.555 us. Without this patch, the Notch subcarrier filter was trying to capture using NTSC-M frequency, which is very close, but not equal. This could result in Black and White or miscolored frames. ----- diff -puNr linux-2.6.12-rc3.org/drivers/media/video/cx88/cx88-core.c linux-2.6.12-rc3/drivers/media/video/cx88/cx88-core.c --- linux-2.6.12-rc3.org/drivers/media/video/cx88/cx88-core.c 2005-04-20 21:03:14.000000000 -0300 +++ linux-2.6.12-rc3/drivers/media/video/cx88/cx88-core.c 2005-05-03 09:23:21.000000000 -0300 @@ -736,6 +736,9 @@ static unsigned int inline norm_fsc8(str { static const unsigned int ntsc = 28636360; static const unsigned int pal = 35468950; + static const unsigned int palm = 28604892; + + if (V4L2_STD_PAL_M & norm->id) return palm; return (norm->id & V4L2_STD_625_50) ? pal : ntsc; } @@ -749,6 +752,8 @@ static unsigned int inline norm_notchfil static unsigned int inline norm_htotal(struct cx88_tvnorm *norm) { + // Should allways be Line Draw Time / 4FSC + if (V4L2_STD_PAL_M & norm->id) return 909; return (norm->id & V4L2_STD_625_50) ? 1135 : 910; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/