From patchwork Mon Mar 9 10:14:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 11426563 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9277F138D for ; Mon, 9 Mar 2020 10:14:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7C4862146E for ; Mon, 9 Mar 2020 10:14:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726632AbgCIKOu (ORCPT ); Mon, 9 Mar 2020 06:14:50 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:40741 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726533AbgCIKOt (ORCPT ); Mon, 9 Mar 2020 06:14:49 -0400 Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28] helo=dude02.lab.pengutronix.de) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jBFQm-0003mn-Qs; Mon, 09 Mar 2020 11:14:40 +0100 Received: from mfe by dude02.lab.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1jBFQg-0001mH-V5; Mon, 09 Mar 2020 11:14:34 +0100 From: Marco Felsch To: mchehab@kernel.org, sakari.ailus@linux.intel.com, hans.verkuil@cisco.com, jacopo+renesas@jmondi.org, robh+dt@kernel.org, laurent.pinchart@ideasonboard.com Cc: devicetree@vger.kernel.org, kernel@pengutronix.de, linux-media@vger.kernel.org Subject: [PATCH v12 14/19] media: tvp5150: add v4l2-event support Date: Mon, 9 Mar 2020 11:14:23 +0100 Message-Id: <20200309101428.15267-15-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200309101428.15267-1-m.felsch@pengutronix.de> References: <20200309101428.15267-1-m.felsch@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::28 X-SA-Exim-Mail-From: mfe@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Currently the driver notifies internal subdevs if the signal is locked or not. This information is also useful for userpace applications e.g. to switch to another input device upon a signal lost event. This commit adds the support for the userspace to subscribe to the V4L2_EVENT_SOURCE_CHANGE and V4L2_EVENT_CTRL events. Signed-off-by: Marco Felsch --- v12: - new patch drivers/media/i2c/tvp5150.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c index 313d2a43d79e..9bad3192358d 100644 --- a/drivers/media/i2c/tvp5150.c +++ b/drivers/media/i2c/tvp5150.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -1526,6 +1527,19 @@ static int tvp5150_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regi } #endif +static int tvp5150_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, + struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_src_change_event_subdev_subscribe(sd, fh, sub); + case V4L2_EVENT_CTRL: + return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub); + default: + return -EINVAL; + } +} + static int tvp5150_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) { int status = tvp5150_read(sd, 0x88); @@ -1617,6 +1631,8 @@ static const struct v4l2_subdev_core_ops tvp5150_core_ops = { .g_register = tvp5150_g_register, .s_register = tvp5150_s_register, #endif + .subscribe_event = tvp5150_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, }; static const struct v4l2_subdev_tuner_ops tvp5150_tuner_ops = { @@ -2045,7 +2061,7 @@ static int tvp5150_probe(struct i2c_client *c) sd = &core->sd; v4l2_i2c_subdev_init(sd, c, &tvp5150_ops); sd->internal_ops = &tvp5150_internal_ops; - sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; if (IS_ENABLED(CONFIG_OF) && np) { res = tvp5150_parse_dt(core, np);