From patchwork Wed Feb 10 14:58:09 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 2681 Return-path: Envelope-to: mchehab@infradead.org Delivery-date: Wed, 10 Feb 2010 14:58:50 +0000 Received: from bombadil.infradead.org [18.85.46.34] by pedra with IMAP (fetchmail-6.3.6) for (single-drop); Wed, 10 Feb 2010 13:00:05 -0200 (BRST) Received: from vger.kernel.org ([209.132.180.67]) by bombadil.infradead.org with esmtp (Exim 4.69 #1 (Red Hat Linux)) id 1NfE1h-0000AP-QQ; Wed, 10 Feb 2010 14:58:50 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754515Ab0BJO6t (ORCPT + 1 other); Wed, 10 Feb 2010 09:58:49 -0500 Received: from smtp.nokia.com ([192.100.122.230]:43130 "EHLO mgw-mx03.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754424Ab0BJO6s (ORCPT ); Wed, 10 Feb 2010 09:58:48 -0500 Received: from esebh105.NOE.Nokia.com (esebh105.ntc.nokia.com [172.21.138.211]) by mgw-mx03.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o1AEwIuD030315; Wed, 10 Feb 2010 16:58:45 +0200 Received: from vaebh104.NOE.Nokia.com ([10.160.244.30]) by esebh105.NOE.Nokia.com with Microsoft SMTPSVC(6.0.3790.3959); Wed, 10 Feb 2010 16:58:16 +0200 Received: from mgw-sa01.ext.nokia.com ([147.243.1.47]) by vaebh104.NOE.Nokia.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.3959); Wed, 10 Feb 2010 16:58:16 +0200 Received: from maxwell.research.nokia.com (maxwell.research.nokia.com [172.21.50.162]) by mgw-sa01.ext.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o1AEwE4P014969 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 10 Feb 2010 16:58:15 +0200 Received: from lanttu (unknown [192.168.239.74]) by maxwell.research.nokia.com (Postfix) with ESMTPS id 9E0B2700C3; Wed, 10 Feb 2010 16:58:14 +0200 (EET) Received: from sakke by lanttu with local (Exim 4.69) (envelope-from ) id 1NfE16-0004hD-Nn; Wed, 10 Feb 2010 16:58:12 +0200 From: Sakari Ailus To: linux-media@vger.kernel.org Cc: hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com, iivanov@mm-sol.com, gururaj.nagendra@intel.com, david.cohen@nokia.com Subject: [PATCH v4 7/7] V4L: Events: Support all events Date: Wed, 10 Feb 2010 16:58:09 +0200 Message-Id: <1265813889-17847-7-git-send-email-sakari.ailus@maxwell.research.nokia.com> X-Mailer: git-send-email 1.5.6.5 In-Reply-To: <1265813889-17847-6-git-send-email-sakari.ailus@maxwell.research.nokia.com> References: <4B72C965.7040204@maxwell.research.nokia.com> <1265813889-17847-1-git-send-email-sakari.ailus@maxwell.research.nokia.com> <1265813889-17847-2-git-send-email-sakari.ailus@maxwell.research.nokia.com> <1265813889-17847-3-git-send-email-sakari.ailus@maxwell.research.nokia.com> <1265813889-17847-4-git-send-email-sakari.ailus@maxwell.research.nokia.com> <1265813889-17847-5-git-send-email-sakari.ailus@maxwell.research.nokia.com> <1265813889-17847-6-git-send-email-sakari.ailus@maxwell.research.nokia.com> X-OriginalArrivalTime: 10 Feb 2010 14:58:16.0351 (UTC) FILETIME=[79AE82F0:01CAAA61] X-Nokia-AV: Clean Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add support for subscribing all events with a special id V4L2_EVENT_ALL. If V4L2_EVENT_ALL is subscribed, no other events may be subscribed. Otherwise V4L2_EVENT_ALL is considered just as any other event. Signed-off-by: Sakari Ailus --- drivers/media/video/v4l2-event.c | 13 ++++++++++++- include/linux/videodev2.h | 1 + 2 files changed, 13 insertions(+), 1 deletions(-) diff --git a/drivers/media/video/v4l2-event.c b/drivers/media/video/v4l2-event.c index 0af0de5..68b3cf4 100644 --- a/drivers/media/video/v4l2-event.c +++ b/drivers/media/video/v4l2-event.c @@ -139,6 +139,14 @@ static struct v4l2_subscribed_event *__v4l2_event_subscribed( struct v4l2_events *events = fh->events; struct v4l2_subscribed_event *sev; + if (list_empty(&events->subscribed)) + return NULL; + + sev = list_entry(events->subscribed.next, + struct v4l2_subscribed_event, list); + if (sev->type == V4L2_EVENT_ALL) + return sev; + list_for_each_entry(sev, &events->subscribed, list) { if (sev->type == type) return sev; @@ -222,6 +230,8 @@ int v4l2_event_subscribe(struct v4l2_fh *fh, /* Allow subscribing to valid events only. */ if (sub->type < V4L2_EVENT_PRIVATE_START) switch (sub->type) { + case V4L2_EVENT_ALL: + break; default: return -EINVAL; } @@ -262,7 +272,8 @@ int v4l2_event_unsubscribe(struct v4l2_fh *fh, sev = __v4l2_event_subscribed(fh, sub->type); - if (sev == NULL) { + if (sev == NULL || + (sub->type != V4L2_EVENT_ALL && sev->type == V4L2_EVENT_ALL)) { spin_unlock_irqrestore(&fh->vdev->fh_lock, flags); return -EINVAL; } diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index a19ae89..9ae9a1c 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -1553,6 +1553,7 @@ struct v4l2_event_subscription { __u32 reserved[7]; }; +#define V4L2_EVENT_ALL 0 #define V4L2_EVENT_PRIVATE_START 0x08000000 /*