linux-kernel - [PATCH] media: i2c: adv748x: add enuminput control to adv748x hdmi subdev

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Date:   Mon, 15 Jun 2020 15:26:39 +0200
From:   Ramzi BEN MEFTAH <rbmeftah@...adit-jv.com>
To:     Kieran Bingham <kieran.bingham@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Michael Rodin <mrodin@...adit-jv.com>, <efriedrich@...adit-jv.com>,
        <erosca@...adit-jv.com>
Subject: [PATCH] media: i2c: adv748x: add enuminput control to adv748x hdmi subdev

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@...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