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authorHans Verkuil <hans.verkuil@cisco.com>2012-05-28 11:10:01 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-02-05 18:17:03 -0200
commit9bbc5820ffe1675c923ed0b82952cc64a610bd5d (patch)
treed2ffbd89d995a308431523a49846b5fed6f70857 /drivers/media/radio
parentf5e7cc4af36c631edf7dc73111d80af975f526a6 (diff)
downloadlinux-linaro-stable-9bbc5820ffe1675c923ed0b82952cc64a610bd5d.tar.gz
[media] radio-miropcm20: fix signal and stereo indication
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/radio')
-rw-r--r--drivers/media/radio/radio-miropcm20.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/media/radio/radio-miropcm20.c b/drivers/media/radio/radio-miropcm20.c
index eb6cd86337a8..3d0ff4404d12 100644
--- a/drivers/media/radio/radio-miropcm20.c
+++ b/drivers/media/radio/radio-miropcm20.c
@@ -82,6 +82,7 @@ static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
struct pcm20 *dev = video_drvdata(file);
+ int res;
if (v->index)
return -EINVAL;
@@ -89,8 +90,13 @@ static int vidioc_g_tuner(struct file *file, void *priv,
v->type = V4L2_TUNER_RADIO;
v->rangelow = 87*16000;
v->rangehigh = 108*16000;
- v->signal = 0xffff;
- v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+ res = snd_aci_cmd(dev->aci, ACI_READ_TUNERSTATION, -1, -1);
+ v->signal = (res & 0x80) ? 0 : 0xffff;
+ /* Note: stereo detection does not work if the audio is muted,
+ it will default to mono in that case. */
+ res = snd_aci_cmd(dev->aci, ACI_READ_TUNERSTEREO, -1, -1);
+ v->rxsubchans = (res & 0x40) ? V4L2_TUNER_SUB_MONO :
+ V4L2_TUNER_SUB_STEREO;
v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
v->audmode = dev->audmode;
return 0;