V4L/DVB (3280): Added VIDIOC_QUERYCTRL to saa7115

- Added VIDIOC_QUERYCTRL to saa7115
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>

drivers/media/video/saa7115.c

@@ -1012,6 +1012,48 @@ static void saa7115_decode_vbi_line(struct i2c_client *client,
 
 /* ============ SAA7115 AUDIO settings (end) ============= */
 
+static struct v4l2_queryctrl saa7115_qctrl[] = {
+	{
+		.id            = V4L2_CID_BRIGHTNESS,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Brightness",
+		.minimum       = 0,
+		.maximum       = 255,
+		.step          = 1,
+		.default_value = 128,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_CONTRAST,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Contrast",
+		.minimum       = 0,
+		.maximum       = 255,
+		.step          = 1,
+		.default_value = 64,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_SATURATION,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Saturation",
+		.minimum       = 0,
+		.maximum       = 255,
+		.step          = 1,
+		.default_value = 64,
+		.flags         = 0,
+	}, {
+		.id            = V4L2_CID_HUE,
+		.type          = V4L2_CTRL_TYPE_INTEGER,
+		.name          = "Hue",
+		.minimum       = -128,
+		.maximum       = 127,
+		.step          = 1,
+		.default_value = 0,
+		.flags 	       = 0,
+	},
+};
+
+/* ----------------------------------------------------------------------- */
+
 static int saa7115_command(struct i2c_client *client, unsigned int cmd, void *arg)
 {
 	struct saa7115_state *state = i2c_get_clientdata(client);
@@ -1052,6 +1094,19 @@ static int saa7115_command(struct i2c_client *client, unsigned int cmd, void *ar
 	case VIDIOC_S_CTRL:
 		return saa7115_set_v4lctrl(client, (struct v4l2_control *)arg);
 
+	case VIDIOC_QUERYCTRL:
+	{
+		struct v4l2_queryctrl *qc = arg;
+		int i;
+
+		for (i = 0; i < ARRAY_SIZE(saa7115_qctrl); i++)
+			if (qc->id && qc->id == saa7115_qctrl[i].id) {
+				memcpy(qc, &saa7115_qctrl[i], sizeof(*qc));
+				return 0;
+			}
+		return -EINVAL;
+	}
+
 	case VIDIOC_G_STD:
 		*(v4l2_std_id *)arg = saa7115_get_v4lstd(client);
 		break;