The patch number 10435 was added via Andy Walls <awa...@radix.net>
to http://linuxtv.org/hg/v4l-dvb master development tree.
Kernel patches in this development tree may be modified to be backward
compatible with older kernels. Compatibility modifications will be
removed before inclusion into the mainstream Kernel
If anyone has any objections, please let us know by sending a message to:
Linux Media Mailing List <linux-me...@vger.kernel.org>
------
From: Andy Walls <awa...@radix.net>
cx18: Normalize APU after second APU firmware load
Priority: normal
Signed-off-by: Andy Walls <awa...@radix.net>
---
linux/drivers/media/video/cx18/cx18-driver.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff -r c8352937e715 -r 28a26a8241db
linux/drivers/media/video/cx18/cx18-driver.c
--- a/linux/drivers/media/video/cx18/cx18-driver.c Fri Jan 30 20:39:26
2009 -0500
+++ b/linux/drivers/media/video/cx18/cx18-driver.c Fri Jan 30 20:48:40
2009 -0500
@@ -1085,6 +1085,19 @@ int cx18_init_on_first_open(struct cx18
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 */
---
Patch is available at:
http://linuxtv.org/hg/v4l-dvb/rev/28a26a8241db802f019d3a63d1c72032027e3888
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