From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp-out-240.synserver.de ([212.40.185.240]:1061 "EHLO smtp-out-240.synserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752405AbbFXQui (ORCPT ); Wed, 24 Jun 2015 12:50:38 -0400 From: Lars-Peter Clausen To: Hans Verkuil Cc: linux-media@vger.kernel.org, Lars-Peter Clausen Subject: [PATCH 2/5] [media] adv7842: Add support for control event notifications Date: Wed, 24 Jun 2015 18:50:28 +0200 Message-Id: <1435164631-19924-2-git-send-email-lars@metafoo.de> In-Reply-To: <1435164631-19924-1-git-send-email-lars@metafoo.de> References: <1435164631-19924-1-git-send-email-lars@metafoo.de> Sender: linux-media-owner@vger.kernel.org List-ID: Allow userspace applications to subscribe to control change events. This can e.g. be used to monitor the 5V detect control to be notified when a source is connected or disconnected. Signed-off-by: Lars-Peter Clausen --- drivers/media/i2c/adv7842.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c index 4cf79b2..ffc0655 100644 --- a/drivers/media/i2c/adv7842.c +++ b/drivers/media/i2c/adv7842.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #include #include @@ -3015,6 +3016,8 @@ static const struct v4l2_subdev_core_ops adv7842_core_ops = { .log_status = adv7842_log_status, .ioctl = adv7842_ioctl, .interrupt_service_routine = adv7842_isr, + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, #ifdef CONFIG_VIDEO_ADV_DEBUG .g_register = adv7842_g_register, .s_register = adv7842_s_register, @@ -3210,7 +3213,7 @@ static int adv7842_probe(struct i2c_client *client, sd = &state->sd; v4l2_i2c_subdev_init(sd, client, &adv7842_ops); - sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; state->mode = pdata->mode; state->hdmi_port_a = pdata->input == ADV7842_SELECT_HDMI_PORT_A; -- 2.1.4