[media] go7007: add audio input ioctls

Since we now know what audio inputs there are, we can also get/set and
enumerate them.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/media/go7007/go7007-v4l2.c

@@ -608,9 +608,10 @@ static int vidioc_querycap(struct file *file, void  *priv,
 
 	cap->version = KERNEL_VERSION(0, 9, 8);
 
-	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
-			    V4L2_CAP_STREAMING; /* | V4L2_CAP_AUDIO; */
+	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
 
+	if (go->board_info->num_aud_inputs)
+		cap->device_caps |= V4L2_CAP_AUDIO;
 	if (go->board_info->flags & GO7007_BOARD_HAS_TUNER)
 		cap->capabilities |= V4L2_CAP_TUNER;
 
@@ -1191,6 +1192,9 @@ static int vidioc_enum_input(struct file *file, void *priv,
 	else
 		inp->type = V4L2_INPUT_TYPE_CAMERA;
 
+	if (go->board_info->num_aud_inputs)
+		inp->audioset = (1 << go->board_info->num_aud_inputs) - 1;
+	else
 		inp->audioset = 0;
 	inp->tuner = 0;
 	if (go->board_info->sensor_flags & GO7007_SENSOR_TV)
@@ -1212,6 +1216,39 @@ static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 	return 0;
 }
 
+static int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *a)
+{
+	struct go7007 *go = video_drvdata(file);
+
+	if (a->index >= go->board_info->num_aud_inputs)
+		return -EINVAL;
+	strlcpy(a->name, go->board_info->aud_inputs[a->index].name, sizeof(a->name));
+	a->capability = V4L2_AUDCAP_STEREO;
+	return 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *a)
+{
+	struct go7007 *go = video_drvdata(file);
+
+	a->index = go->aud_input;
+	strlcpy(a->name, go->board_info->aud_inputs[go->aud_input].name, sizeof(a->name));
+	a->capability = V4L2_AUDCAP_STEREO;
+	return 0;
+}
+
+static int vidioc_s_audio(struct file *file, void *fh, const struct v4l2_audio *a)
+{
+	struct go7007 *go = video_drvdata(file);
+
+	if (a->index >= go->board_info->num_aud_inputs)
+		return -EINVAL;
+	go->aud_input = a->index;
+	v4l2_subdev_call(go->sd_audio, audio, s_routing,
+			go->board_info->aud_inputs[go->aud_input].audio_input, 0, 0);
+	return 0;
+}
+
 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 {
 	struct go7007 *go = ((struct go7007_file *) priv)->go;
@@ -1772,6 +1809,9 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
 	.vidioc_enum_input        = vidioc_enum_input,
 	.vidioc_g_input           = vidioc_g_input,
 	.vidioc_s_input           = vidioc_s_input,
+	.vidioc_enumaudio         = vidioc_enumaudio,
+	.vidioc_g_audio           = vidioc_g_audio,
+	.vidioc_s_audio           = vidioc_s_audio,
 	.vidioc_queryctrl         = vidioc_queryctrl,
 	.vidioc_g_ctrl            = vidioc_g_ctrl,
 	.vidioc_s_ctrl            = vidioc_s_ctrl,
@@ -1816,6 +1856,11 @@ int go7007_v4l2_init(struct go7007 *go)
 		go->video_dev = NULL;
 		return rv;
 	}
+	if (go->board_info->num_aud_inputs == 0) {
+		v4l2_disable_ioctl(go->video_dev, VIDIOC_G_AUDIO);
+		v4l2_disable_ioctl(go->video_dev, VIDIOC_S_AUDIO);
+		v4l2_disable_ioctl(go->video_dev, VIDIOC_ENUMAUDIO);
+	}
 	rv = v4l2_device_register(go->dev, &go->v4l2_dev);
 	if (rv < 0) {
 		video_device_release(go->video_dev);