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 5993A127B68; Tue, 16 Apr 2024 10:27:43 +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=1713263265; cv=none; b=mdQ+F14QVDK+VutYU2AHViVZ1bb1+w+oOtiQ07RNFhSmMWEUre3XjFXlyPWmBGEcWX7clUy+cmRaWC0LNtVCPYzvw8wWe4/ZYWn8QSJ8PiXHw0pVy36zQfK3oM1TuSSdcvRxL9FwZSw6IGH4UWVAPlPbD1PduSmXsrkx/PIOUug= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713263265; c=relaxed/simple; bh=CBFlfJXfnRd9lj0QLT0BjStdJ6M5XGBrdlUNj/3gRvg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hv/Qa048z1kzmk7D3RBP3l1/2fkCgwKNEmcbJo86l2DqGqamHlV1Q/EnnM0MhgsI9PqGvXC52PumAY+NIIBl7qEdvBb+JYIJIhmsWunWdIRKGzOQh+q6BjMnBLveC1kxnX8Wfr4EJnIv//SONClF7NzV5vd8HsYvztfRoLtehvY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (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=APkcRoME; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (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="APkcRoME" Received: from [192.168.88.20] (91-154-34-181.elisa-laajakaista.fi [91.154.34.181]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A9751480; Tue, 16 Apr 2024 12:26:54 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1713263215; bh=CBFlfJXfnRd9lj0QLT0BjStdJ6M5XGBrdlUNj/3gRvg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=APkcRoMEO6zSeMRXN2LG5q6/fuDVKgtp7Brh+DZKxaKVpXOC3QWCIbu+6G+trJMaY kRtZAnWMbKm7XXRu3tg0ShLhP8mEf2oBYiIz+FZqypoeFDwxkZJE9y3Fd+d4sWxhR4 2lw0wqV4j5zTxdJCC4XbSDMYheHEjH6aTLnMiPNM= Message-ID: Date: Tue, 16 Apr 2024 13:27:38 +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 v3 6/9] media: subdev: Add v4l2_subdev_is_streaming() To: Laurent Pinchart Cc: Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Umang Jain , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240410-enable-streams-impro-v3-0-e5e7a5da7420@ideasonboard.com> <20240410-enable-streams-impro-v3-6-e5e7a5da7420@ideasonboard.com> <20240412181558.GI31122@pendragon.ideasonboard.com> From: Tomi Valkeinen Content-Language: en-US Autocrypt: addr=tomi.valkeinen@ideasonboard.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/04/2024 21:15, Laurent Pinchart wrote: > Hi Tomi, > > Thank you for the patch. > > On Wed, Apr 10, 2024 at 03:35:53PM +0300, Tomi Valkeinen wrote: >> Add a helper function which returns whether the subdevice is streaming, >> i.e. if .s_stream or .enable_streams has been called successfully. >> >> Signed-off-by: Tomi Valkeinen >> --- >> drivers/media/v4l2-core/v4l2-subdev.c | 25 +++++++++++++++++++++++++ >> include/media/v4l2-subdev.h | 13 +++++++++++++ >> 2 files changed, 38 insertions(+) >> >> diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c >> index 3d2c9c224b8f..20b5a00cbeeb 100644 >> --- a/drivers/media/v4l2-core/v4l2-subdev.c >> +++ b/drivers/media/v4l2-core/v4l2-subdev.c >> @@ -2419,6 +2419,31 @@ void v4l2_subdev_notify_event(struct v4l2_subdev *sd, >> } >> EXPORT_SYMBOL_GPL(v4l2_subdev_notify_event); >> >> +bool v4l2_subdev_is_streaming(struct v4l2_subdev *sd) >> +{ >> + struct v4l2_subdev_state *state; >> + >> + if (!v4l2_subdev_has_op(sd, pad, enable_streams)) >> + return sd->streaming_enabled; >> + >> + state = v4l2_subdev_get_locked_active_state(sd); >> + >> + if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) >> + return !!sd->enabled_pads; > > I think this can be moved above the > v4l2_subdev_get_locked_active_state() call. Yep. I think I originally thought that it'll be nice to get a warning here if the state is not locked, but perhaps that's pointless. > Reviewed-by: Laurent Pinchart > > Any plan to convert drivers to this ? No. Afaics, it will be per-driver manual work, no way to automate it. Tomi