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authorAndy Walls <awalls@radix.net>2009-01-30 22:48:40 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-30 12:42:38 -0300
commitd5c02f6b27b8e70c11b341eef709e5f64ca16e42 (patch)
tree952b049f15d150fbb6e450e07978ecd4b875b554 /drivers/media/video/cx18
parent072e6183c26cb00de0368a06cbbda2a2d55e6844 (diff)
V4L/DVB (10435): cx18: Normalize APU after second APU firmware load
Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18')
-rw-r--r--drivers/media/video/cx18/cx18-driver.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 0f13fdd890a..1518a58e17f 100644
--- a/drivers/media/video/cx18/cx18-driver.c
+++ b/drivers/media/video/cx18/cx18-driver.c
@@ -1080,6 +1080,19 @@ int cx18_init_on_first_open(struct cx18 *cx)
return -ENXIO;
}
+ /*
+ * The second firmware load requires us to normalize the APU state,
+ * or the audio for the first analog capture will be badly incorrect.
+ *
+ * I can't seem to call APU_RESETAI and have it succeed without the
+ * APU capturing audio, so we start and stop it here to do the reset
+ */
+
+ /* MPEG Encoding, 224 kbps, MPEG Layer II, 48 ksps */
+ cx18_vapi(cx, CX18_APU_START, 2, CX18_APU_ENCODING_METHOD_MPEG|0xb9, 0);
+ cx18_vapi(cx, CX18_APU_RESETAI, 0);
+ cx18_vapi(cx, CX18_APU_STOP, 1, CX18_APU_ENCODING_METHOD_MPEG);
+
vf.tuner = 0;
vf.type = V4L2_TUNER_ANALOG_TV;
vf.frequency = 6400; /* the tuner 'baseline' frequency */