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>

diff --git a/drivers/media/video/cx18/cx18-driver.c b/drivers/media/video/cx18/cx18-driver.c
index 0f13fdd..1518a58 100644 (file)
--- 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 */