V4L/DVB (10435): cx18: Normalize APU after second APU firmware load (d5c02f6b) · Commits · 戴 / test

drivers/media/video/cx18/cx18-driver.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -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 */