From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2EB37403E9A; Thu, 11 Jun 2026 13:06:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781183204; cv=none; b=PWdTY3Y4O5jJx7QoRIhUqYkj4RhlCt4OPR3T8lFDXSV58AB/FVoyK1SRuWWSNC05/PgqbLoTd8o0HgI+RQj1t8uUGVxJeNX928TFWPKEgUqnkMjDAenchrXOnAcCqofiRkimUaipde68iwbyXyJiiqfTjy5IkAqiZj5QdjSTiNE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781183204; c=relaxed/simple; bh=XzASeNJliZuawkpqnviVaJWwgMYlGRM+kWFcsc2UApI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=RrcIlKXOGigeG9YjIlwYvZREfBSpIY8FcU/Rr0V/3tMXD5EexFFDwKSwxIqIjSedj4CKdEutc546CCNCB5a7jkTc94n2Ij8dMspQbrru8EIeRTi09gUMLweOkslK27Klf6ye3OrhIHOpWNzLOIFeMqNqkiD/dW5rJYWAFWWP0eg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=M+ZA36di; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="M+ZA36di" Received: from [192.168.88.20] (91-158-153-178.elisa-laajakaista.fi [91.158.153.178]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 7D3FDD0; Thu, 11 Jun 2026 15:06:11 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1781183171; bh=XzASeNJliZuawkpqnviVaJWwgMYlGRM+kWFcsc2UApI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=M+ZA36diDuC0rgAOKrRAhsXQnRIVEKIr+jPZG9q+BfwxKnXFpKA+pBwNvFoiLqbWN MhSYOTHqk6zpAdY80VLBUVN5y2JumjEQxjJQJX/FKx1OpGS0gKPM9ABUPo1Kb9wN0i zbXL43u2V5SESC9+1C3mL/CUpEUgKQcDJlfFUFco= Message-ID: Date: Thu, 11 Jun 2026 16:06:38 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] media: imx219: Report streams using frame descriptors To: Sakari Ailus Cc: Dave Stevenson , Mauro Carvalho Chehab , Laurent Pinchart , Jacopo Mondi , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260611-imx219-frame-desc-v1-1-fe7e975bca6e@ideasonboard.com> From: Tomi Valkeinen Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi, On 11/06/2026 12:24, Sakari Ailus wrote: > Moi, > > On Thu, Jun 11, 2026 at 12:13:02PM +0300, Tomi Valkeinen wrote: >> From: Laurent Pinchart >> >> Implement the .get_frame_desc() subdev operation to report information >> about streams to the connected CSI-2 receiver. This is required to let >> the CSI-2 receiver driver know about virtual channels and data types for >> each stream. >> >> Signed-off-by: Laurent Pinchart >> Reviewed-by: Jacopo Mondi >> [tomi.valkeinen: picked from "Generic line based metadata support, internal pads" series] >> Signed-off-by: Tomi Valkeinen >> --- >> This patch that adds .get_frame_desc() support to imx219 driver has been >> circulating for a few years, and is currently posted in "[PATCH v12 >> 00/86] Generic line based metadata support, internal pads" series. >> >> However, as some bridge drivers require modern drivers that support >> .get_frame_desc, specifically ds90ub960.c, let's pick the patch and >> queue it separately from the huge metadata series. > > I've been recently working on > . > In other words, drivers that have a single stream don't need this. We could Thanks, I had missed that. I like the idea of a helper that does the fallback mechanism. But I wonder about the need for dynamic alloc, which complicates the series. In any case, we can drop this series and continue the discussion on your series. Tomi