From patchwork Wed Apr 24 12:22:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 792202 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) (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 EA0E515B0E2 for ; Wed, 24 Apr 2024 12:23:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.14 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713961390; cv=none; b=hocEH3kM7DT7vZfCU751XKeTMyTXKDm50nDI59LcAA7zO7HsW4fMY0T2CzjcNNcyH6PxgTiWjBdZsecvxKL50P7/iq0su8HhWcszCJdCYoUN4DaBqDurDXoD0euEOqYrJr7z0HwYBsX7gssMuIjs3/PZ0clAeER12mT2/8RuGYQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713961390; c=relaxed/simple; bh=KY+lx6CRHKbqxwavkV8vK3kxZ6KrOrEF/MbKTPBx2jQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=XwrnbBxVlzDvIrI7BsQmW7KpEEWTGcYr/gMnSc3N/DAH4c99Ory+vI2K93X19aoSaDPnwZWmRCZiu8jqB3mhr+3IUnOM9ZrZho4z3xhstiX1Qc0VEmOCxqXqCrt5yJowWbFtC5AgpCvQBTnKTlImcN8db9I0zLYHtSJicf0c1Hw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=kzkQ8cP0; arc=none smtp.client-ip=192.198.163.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="kzkQ8cP0" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1713961389; x=1745497389; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KY+lx6CRHKbqxwavkV8vK3kxZ6KrOrEF/MbKTPBx2jQ=; b=kzkQ8cP0dJ1U7gJCswHLouHmeC3OTITjl4B5uRpW8Q7EWT3t/Jktqmze I4nZifu+4OkHwco8dgO2O69QMjVFZoy3+ufpHaGCWR+YTcTTnT2DR21nX G6GDcIhF18d4z8Mr0lbtxirRCRmrbgoz66+Ngz4jaw6fCwZD7EKeQ+E8d Rr1pAw/l0IQWEZ+vIbk2pKyaE8rsACe2o+WsF81T5G8tDzQIqsHf2s8/R UZoxHBG5hMGVhe958bVZrCA42Jos2qtIT1bhxAun7dTfypX4ilUJo0fGC niTrc0mgWb6fxA6PpBtfjG9d+ltnn3lH2M8TB4tMQwMOLqqP/6GMMMZW4 Q==; X-CSE-ConnectionGUID: +qv8QP4IR+G4N1D/B9CRaw== X-CSE-MsgGUID: DTtx95eCQLqnF2vhQue5Tg== X-IronPort-AV: E=McAfee;i="6600,9927,11053"; a="9809729" X-IronPort-AV: E=Sophos;i="6.07,226,1708416000"; d="scan'208";a="9809729" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2024 05:23:05 -0700 X-CSE-ConnectionGUID: aPSzatClR+ymsHuDP55zXg== X-CSE-MsgGUID: KvQvav2gTDWI+v/eTAivEA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,226,1708416000"; d="scan'208";a="29512929" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2024 05:23:03 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 71DCE11F855; Wed, 24 Apr 2024 15:22:59 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: Laurent Pinchart , tomi.valkeinen@ideasonboard.com, bingbu.cao@intel.com, hongju.wang@intel.com, hverkuil@xs4all.nl, Andrey Konovalov , Jacopo Mondi , Dmitry Perchanov , "Ng, Khai Wen" , Alain Volmat Subject: [PATCH 13/14] media: v4l: subdev: Return routes set using S_ROUTING Date: Wed, 24 Apr 2024 15:22:36 +0300 Message-Id: <20240424122237.875000-14-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240424122237.875000-1-sakari.ailus@linux.intel.com> References: <20240424122237.875000-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Return the routes set using S_ROUTING back to the user. Also reflect this in documentation. Signed-off-by: Sakari Ailus Reviewed-by: Laurent Pinchart --- .../media/v4l/vidioc-subdev-g-routing.rst | 7 ++----- drivers/media/v4l2-core/v4l2-subdev.c | 12 +++++++++++- 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst index cbd9370006b6..1cf795480602 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst @@ -44,7 +44,8 @@ Drivers report their current routing tables using the ``VIDIOC_SUBDEV_G_ROUTING`` ioctl and application may enable or disable routes with the ``VIDIOC_SUBDEV_S_ROUTING`` ioctl, by adding or removing routes and setting or clearing flags of the ``flags`` field of a struct -:c:type:`v4l2_subdev_route`. +:c:type:`v4l2_subdev_route`. Similarly to ``VIDIOC_SUBDEV_G_ROUTING``, also +``VIDIOC_SUBDEV_S_ROUTING`` returns the routes back to the user. All stream configurations are reset when ``VIDIOC_SUBDEV_S_ROUTING`` is called. This means that the userspace must reconfigure all stream formats and selections @@ -153,10 +154,6 @@ On success 0 is returned, on error -1 and the ``errno`` variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes ` chapter. -ENOSPC - The application provided ``num_routes`` is not big enough to contain - all the available routes the subdevice exposes. - EINVAL The sink or source pad identifiers reference a non-existing pad or reference pads of different types (ie. the sink_pad identifiers refers to a source diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index b565f202df67..3d1ed8ab5229 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -1017,8 +1017,18 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg, krouting.len_routes = routing->len_routes; krouting.routes = routes; - return v4l2_subdev_call(sd, pad, set_routing, state, + rval = v4l2_subdev_call(sd, pad, set_routing, state, routing->which, &krouting); + if (rval < 0) + return rval; + + memcpy((struct v4l2_subdev_route *)(uintptr_t)routing->routes, + state->routing.routes, + min(state->routing.num_routes, routing->len_routes) * + sizeof(*state->routing.routes)); + routing->num_routes = state->routing.num_routes; + + return 0; } case VIDIOC_SUBDEV_G_CLIENT_CAP: {