V4L/DVB (9269): cx88: add I2S-ADC tvaudio method
This adds I2S-ADC tvaudio mode as a formal method of audio
delivery.
This fixes one bug and adds fm audio via I2S-ADC on cards
that support it.
The bug occured before when I2S-ADC mode was initiated on
composite/s-video open but was then reset within 500ms
by the audio thread which used any previous audio tuning
details.
Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Steven Toth <stoth@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx88/cx88-tvaudio.c b/drivers/media/video/cx88/cx88-tvaudio.c
index 3a1977f..7dd506b 100644
--- a/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/drivers/media/video/cx88/cx88-tvaudio.c
@@ -767,6 +767,14 @@
case WW_FM:
set_audio_standard_FM(core, radio_deemphasis);
break;
+ case WW_I2SADC:
+ set_audio_start(core, 0x01);
+ /* Slave/Philips/Autobaud */
+ cx_write(AUD_I2SINPUTCNTL, 0);
+ /* Switch to "I2S ADC mode" */
+ cx_write(AUD_I2SCNTL, 0x1);
+ set_audio_finish(core, EN_I2SIN_ENABLE);
+ break;
case WW_NONE:
default:
printk("%s/0: unknown tv audio mode [%d]\n",
@@ -895,6 +903,9 @@
break;
}
break;
+ case WW_I2SADC:
+ /* DO NOTHING */
+ break;
}
if (UNSET != ctl) {