V4L/DVB (11178): pvrusb2: Make audio sample rate update into a sub-device broadcast

The pvrusb2 driver had previously been using i2c module specific calls
to set the sample rate (a long long time ago this was needed).  These
days it is safe to use a broadcast so let's just broadcast this when
communicating audio sample rate to sub-devices.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index e92ea6af8bc..8a96f260af5 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -2983,6 +2983,26 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw)
                 v4l2_device_call_all(&hdw->v4l2_dev, 0, video, s_fmt, &fmt);
         }
 
+        if (hdw->srate_dirty) {
+                u32 val;
+                pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_audio %d",
+                           hdw->srate_val);
+                switch (hdw->srate_val) {
+                default:
+                case V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000:
+                        val = 48000;
+                        break;
+                case V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100:
+                        val = 44100;
+                        break;
+                case V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000:
+                        val = 32000;
+                        break;
+                }
+                v4l2_device_call_all(&hdw->v4l2_dev, 0,
+                                     audio, s_clock_freq, val);
+        }
+
         /* Unable to set crop parameters; there is apparently no equivalent
            for VIDIOC_S_CROP */