+ struct v4l2_routing *rt = arg;
+
+ if (!(desc->flags & CHIP_HAS_INPUTSEL) || rt->input >= 4)
+ return -EINVAL;
+ /* There are four inputs: tuner, radio, extern and intern. */
+ chip->input = rt->input;
+ if (chip->muted)
+ break;
+ chip_write_masked(chip, desc->inputreg,
+ desc->inputmap[chip->input], desc->inputmask);
+ break;
+ }
+
+ case VIDIOC_S_TUNER:
+ {
+ struct v4l2_tuner *vt = arg;
+ int mode = 0;
+
+ if (chip->radio)
+ break;
+ switch (vt->audmode) {
+ case V4L2_TUNER_MODE_MONO:
+ mode = VIDEO_SOUND_MONO;
+ break;
+ case V4L2_TUNER_MODE_STEREO:
+ case V4L2_TUNER_MODE_LANG1_LANG2:
+ mode = VIDEO_SOUND_STEREO;
+ break;
+ case V4L2_TUNER_MODE_LANG1:
+ mode = VIDEO_SOUND_LANG1;
+ break;
+ case V4L2_TUNER_MODE_LANG2:
+ mode = VIDEO_SOUND_LANG2;
+ break;
+ default:
+ return -EINVAL;
+ }
+ chip->audmode = vt->audmode;
+
+ if (desc->setmode && mode) {
+ chip->watch_stereo = 0;
+ /* del_timer(&chip->wt); */
+ chip->mode = mode;
+ desc->setmode(chip, mode);
+ }
+ break;
+ }
+
+ case VIDIOC_G_TUNER:
+ {
+ struct v4l2_tuner *vt = arg;
+ int mode = VIDEO_SOUND_MONO;
+
+ if (chip->radio)
+ break;
+ vt->audmode = chip->audmode;
+ vt->rxsubchans = 0;
+ vt->capability = V4L2_TUNER_CAP_STEREO |
+ V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
+
+ if (desc->getmode)
+ mode = desc->getmode(chip);
+
+ if (mode & VIDEO_SOUND_MONO)
+ vt->rxsubchans |= V4L2_TUNER_SUB_MONO;
+ if (mode & VIDEO_SOUND_STEREO)
+ vt->rxsubchans |= V4L2_TUNER_SUB_STEREO;
+ /* Note: for SAP it should be mono/lang2 or stereo/lang2.
+ When this module is converted fully to v4l2, then this
+ should change for those chips that can detect SAP. */
+ if (mode & VIDEO_SOUND_LANG1)
+ vt->rxsubchans = V4L2_TUNER_SUB_LANG1 |
+ V4L2_TUNER_SUB_LANG2;
+ break;
+ }
+
+ case VIDIOCSCHAN:
+ case VIDIOC_S_STD:
+ chip->radio = 0;
+ break;
+
+ case VIDIOCSFREQ:
+ case VIDIOC_S_FREQUENCY:
+ chip->mode = 0; /* automatic */