diff options
| author | Tobias Lorenz <tobias.lorenz@gmx.net> | 2008-09-25 02:33:41 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-18 00:22:03 +0400 |
| commit | 73a529f9a6fee877c4e41f7541b8689dd7561bd7 (patch) | |
| tree | 07dc6232c8e5195d27d2fdbab9b180599d735803 /drivers/media | |
| parent | 33632d4773b8256c29525b7151cd74226352f838 (diff) | |
| download | linux-73a529f9a6fee877c4e41f7541b8689dd7561bd7.tar.xz | |
V4L/DVB (9217): si470x: correction of mono/stereo handling
This patch corrects the behavior of mono/stereo indication and
selection.
These functions now work conform to what's defined in the V4L2
specification.
Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/radio/radio-si470x.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c index 274d8464c02e..67d74cecdb67 100644 --- a/drivers/media/radio/radio-si470x.c +++ b/drivers/media/radio/radio-si470x.c @@ -1431,7 +1431,7 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv, /* driver constants */ strcpy(tuner->name, "FM"); tuner->type = V4L2_TUNER_RADIO; - tuner->capability = V4L2_TUNER_CAP_LOW; + tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; /* range limits */ switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { @@ -1451,13 +1451,18 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv, tuner->rangehigh = 90 * FREQ_MUL; break; }; - tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; - /* Stereo indicator == Stereo (instead of Mono) */ + /* stereo indicator == stereo (instead of mono) */ if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 1) - tuner->audmode = V4L2_TUNER_MODE_STEREO; + tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; else + tuner->rxsubchans = V4L2_TUNER_SUB_MONO; + + /* mono/stereo selector */ + if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 1) tuner->audmode = V4L2_TUNER_MODE_MONO; + else + tuner->audmode = V4L2_TUNER_MODE_STEREO; /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI) @@ -1492,10 +1497,17 @@ static int si470x_vidioc_s_tuner(struct file *file, void *priv, if (tuner->index != 0) goto done; - if (tuner->audmode == V4L2_TUNER_MODE_MONO) + /* mono/stereo selector */ + switch (tuner->audmode) { + case V4L2_TUNER_MODE_MONO: radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ - else + break; + case V4L2_TUNER_MODE_STEREO: radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ + break; + default: + goto done; + } retval = si470x_set_register(radio, POWERCFG); |