V4L/DVB (9846): gspca: Do the webcam microphone work when present.

This patch adds the set/get/enum audio controls.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 6d924f1..a5c21ca 100644 (file)
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -661,7 +661,7 @@ static int gspca_set_alt0(struct gspca_dev *gspca_dev)
 
        ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0);
        if (ret < 0)
-               PDEBUG(D_ERR|D_STREAM, "set interface 0 err %d", ret);
+               PDEBUG(D_ERR|D_STREAM, "set alt 0 err %d", ret);
        return ret;
 }
 
@@ -1071,6 +1071,35 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
        return -EINVAL;
 }
 
+/*fixme: have an audio flag in gspca_dev?*/
+static int vidioc_s_audio(struct file *file, void *priv,
+                        struct v4l2_audio *audio)
+{
+       if (audio->index != 0)
+               return -EINVAL;
+       return 0;
+}
+
+static int vidioc_g_audio(struct file *file, void *priv,
+                        struct v4l2_audio *audio)
+{
+       memset(audio, 0, sizeof *audio);
+       strcpy(audio->name, "Microphone");
+       return 0;
+}
+
+static int vidioc_enumaudio(struct file *file, void *priv,
+                        struct v4l2_audio *audio)
+{
+       if (audio->index != 0)
+               return -EINVAL;
+
+       strcpy(audio->name, "Microphone");
+       audio->capability = 0;
+       audio->mode = 0;
+       return 0;
+}
+
 static int vidioc_querymenu(struct file *file, void *priv,
                            struct v4l2_querymenu *qmenu)
 {
@@ -1787,6 +1816,9 @@ static const struct v4l2_ioctl_ops dev_ioctl_ops = {
        .vidioc_queryctrl       = vidioc_queryctrl,
        .vidioc_g_ctrl          = vidioc_g_ctrl,
        .vidioc_s_ctrl          = vidioc_s_ctrl,
+       .vidioc_g_audio         = vidioc_g_audio,
+       .vidioc_s_audio         = vidioc_s_audio,
+       .vidioc_enumaudio       = vidioc_enumaudio,
        .vidioc_querymenu       = vidioc_querymenu,
        .vidioc_enum_input      = vidioc_enum_input,
        .vidioc_g_input         = vidioc_g_input,