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From:   Ramzi BEN MEFTAH <rbmeftah@de.adit-jv.com>
To:     Kieran Bingham <kieran.bingham@ideasonboard.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        <linux-media@vger.kernel.org>, <linux-kernel@vger.kernel.org>
CC:     Michael Rodin <mrodin@de.adit-jv.com>, <efriedrich@de.adit-jv.com>,
        <erosca@de.adit-jv.com>
Subject: [PATCH] media: i2c: adv748x: add enuminput control to adv748x hdmi subdev
Date:   Mon, 15 Jun 2020 15:26:39 +0200
Message-ID: <1592227599-88545-1-git-send-email-rbmeftah@de.adit-jv.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

This patch adds support for enuminput control to the adv748x hdmi subdev.
This will allow userspace for example to query input hdmi signal status.


Signed-off-by: Ramzi BEN MEFTAH <rbmeftah@de.adit-jv.com>
---
 drivers/media/i2c/adv748x/adv748x-hdmi.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/media/i2c/adv748x/adv748x-hdmi.c b/drivers/media/i2c/adv748x/adv748x-hdmi.c
index c557f8f..2d748b2 100644
--- a/drivers/media/i2c/adv748x/adv748x-hdmi.c
+++ b/drivers/media/i2c/adv748x/adv748x-hdmi.c
@@ -350,6 +350,22 @@ static int adv748x_hdmi_g_input_status(struct v4l2_subdev *sd, u32 *status)
 	return 0;
 }
 
+static int adv748x_hdmi_enuminput(struct v4l2_subdev *sd,
+				 struct v4l2_input *input)
+{
+	if (input->index != 0)
+		return -EINVAL;
+
+	input->type = V4L2_INPUT_TYPE_CAMERA;
+	input->capabilities = V4L2_IN_CAP_DV_TIMINGS;
+	input->status = V4L2_IN_ST_NO_SIGNAL;
+	input->std = V4L2_STD_UNKNOWN;
+
+	snprintf(input->name, sizeof(input->name), "%s", sd->name);
+
+	return adv748x_hdmi_g_input_status(sd, &input->status);
+}
+
 static int adv748x_hdmi_s_stream(struct v4l2_subdev *sd, int enable)
 {
 	struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd);
@@ -386,6 +402,7 @@ static const struct v4l2_subdev_video_ops adv748x_video_ops_hdmi = {
 	.g_dv_timings = adv748x_hdmi_g_dv_timings,
 	.query_dv_timings = adv748x_hdmi_query_dv_timings,
 	.g_input_status = adv748x_hdmi_g_input_status,
+	.enuminput = adv748x_hdmi_enuminput,
 	.s_stream = adv748x_hdmi_s_stream,
 	.g_pixelaspect = adv748x_hdmi_g_pixelaspect,
 };
-- 
2.7.4