Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753403AbZFASiv (ORCPT ); Mon, 1 Jun 2009 14:38:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752053AbZFASil (ORCPT ); Mon, 1 Jun 2009 14:38:41 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:45883 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751897AbZFASil convert rfc822-to-8bit (ORCPT ); Mon, 1 Jun 2009 14:38:41 -0400 From: "Aguirre Rodriguez, Sergio Alberto" To: "Paulraj, Sandeep" , "linux-media@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "Grosen, Mark" Date: Mon, 1 Jun 2009 13:38:37 -0500 Subject: RE: New Driver for DaVinci DM355/DM365/DM6446 Thread-Topic: New Driver for DaVinci DM355/DM365/DM6446 Thread-Index: AcniyStmw6uMN6wQR1S5so7ZtS4AbAAHeNT8 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2030 Lines: 44 > From: linux-media-owner@vger.kernel.org [linux-media-owner@vger.kernel.org] On Behalf Of Paulraj, Sandeep > Sent: Monday, June 01, 2009 5:56 PM > To: linux-media@vger.kernel.org > Cc: linux-kernel@vger.kernel.org; Grosen, Mark > Subject: New Driver for DaVinci DM355/DM365/DM6446 > > Hello, > > WE have a module(H3A) on Davinci DM6446,DM355 and DM365. > > Customers require a way to collect the data required to perform the Auto Exposure (AE), Auto Focus(AF), and Auto White balance (AWB) in hardware as opposed to software. > This is primarily for performance reasons as there is not enough software processing MIPS (to do 3A statistics) available in > an imaging/video system. > > Including this block in hardware reduces the load on the processor and bandwidth to the memory as the data is collected on the fly from the imager. > > This modules collects statistics and we currently implement it as a character driver. This also exists in OMAP3 chips, and is part of the ISP module. I maintain, along with Sakari Ailus, a V4L2 camera driver, which is currently just shared through a gitorious repository: http://gitorious.org/omap3camera The way we offer an interface for the user to be able to request this statistics is with the usage of private IOCTLs declared inside the same V4L2 capturing device driver. So, that way we have a V4L2 driver which has a private call, instead of having it separately from the capture driver. Regards, Sergio > > Which mailing list would be the most appropriate mailing list to submit patches for review? > > Thanks, > Sandeep > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- 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/