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authorDarron Broad <darron@kewl.org>2008-10-15 14:18:42 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-17 17:29:14 -0300
commit430189da042f8cc3305b8fbbce18ea103501fb90 (patch)
treea1d42b5189b511fcd7a1788e7ac189f4368a83d5 /drivers/media
parent953cafc04e9ef9d2fd9f8afb3b3bbde1f8bb9317 (diff)
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>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/video/cx88/cx88-tvaudio.c11
-rw-r--r--drivers/media/video/cx88/cx88-video.c52
-rw-r--r--drivers/media/video/cx88/cx88.h1
3 files changed, 42 insertions, 22 deletions
diff --git a/drivers/media/video/cx88/cx88-tvaudio.c b/drivers/media/video/cx88/cx88-tvaudio.c
index 3a1977f41e2..7dd506b987f 100644
--- a/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/drivers/media/video/cx88/cx88-tvaudio.c
@@ -767,6 +767,14 @@ void cx88_set_tvaudio(struct cx88_core *core)
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 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
break;
}
break;
+ case WW_I2SADC:
+ /* DO NOTHING */
+ break;
}
if (UNSET != ctl) {
diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c
index be45955dff6..3904b73f52e 100644
--- a/drivers/media/video/cx88/cx88-video.c
+++ b/drivers/media/video/cx88/cx88-video.c
@@ -426,24 +426,7 @@ int cx88_video_mux(struct cx88_core *core, unsigned int input)
/* if there are audioroutes defined, we have an external
ADC to deal with audio */
-
if (INPUT(input).audioroute) {
-
- /* cx2388's C-ADC is connected to the tuner only.
- When used with S-Video, that ADC is busy dealing with
- chroma, so an external must be used for baseband audio */
-
- if (INPUT(input).type != CX88_VMUX_TELEVISION &&
- INPUT(input).type != CX88_RADIO) {
- /* "ADC mode" */
- cx_write(AUD_I2SCNTL, 0x1);
- cx_set(AUD_CTL, EN_I2SIN_ENABLE);
- } else {
- /* Normal mode */
- cx_write(AUD_I2SCNTL, 0x0);
- cx_clear(AUD_CTL, EN_I2SIN_ENABLE);
- }
-
/* The wm8775 module has the "2" route hardwired into
the initialization. Some boards may use different
routes for different inputs. HVR-1300 surely does */
@@ -454,9 +437,19 @@ int cx88_video_mux(struct cx88_core *core, unsigned int input)
route.input = INPUT(input).audioroute;
cx88_call_i2c_clients(core,
VIDIOC_INT_S_AUDIO_ROUTING, &route);
-
}
-
+ /* cx2388's C-ADC is connected to the tuner only.
+ When used with S-Video, that ADC is busy dealing with
+ chroma, so an external must be used for baseband audio */
+ if (INPUT(input).type != CX88_VMUX_TELEVISION ) {
+ /* "I2S ADC mode" */
+ core->tvaudio = WW_I2SADC;
+ cx88_set_tvaudio(core);
+ } else {
+ /* Normal mode */
+ cx_write(AUD_I2SCNTL, 0x0);
+ cx_clear(AUD_CTL, EN_I2SIN_ENABLE);
+ }
}
return 0;
@@ -832,9 +825,24 @@ static int video_open(struct inode *inode, struct file *file)
cx_write(MO_GP0_IO, core->board.radio.gpio0);
cx_write(MO_GP1_IO, core->board.radio.gpio1);
cx_write(MO_GP2_IO, core->board.radio.gpio2);
- core->tvaudio = WW_FM;
- cx88_set_tvaudio(core);
- cx88_set_stereo(core,V4L2_TUNER_MODE_STEREO,1);
+ if (core->board.radio.audioroute) {
+ if(core->board.audio_chip &&
+ core->board.audio_chip == V4L2_IDENT_WM8775) {
+ struct v4l2_routing route;
+
+ route.input = core->board.radio.audioroute;
+ cx88_call_i2c_clients(core,
+ VIDIOC_INT_S_AUDIO_ROUTING, &route);
+ }
+ /* "I2S ADC mode" */
+ core->tvaudio = WW_I2SADC;
+ cx88_set_tvaudio(core);
+ } else {
+ /* FM Mode */
+ core->tvaudio = WW_FM;
+ cx88_set_tvaudio(core);
+ cx88_set_stereo(core,V4L2_TUNER_MODE_STEREO,1);
+ }
cx88_call_i2c_clients(core,AUDC_SET_RADIO,NULL);
}
unlock_kernel();
diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h
index 100ffc4b5d9..76207c2856b 100644
--- a/drivers/media/video/cx88/cx88.h
+++ b/drivers/media/video/cx88/cx88.h
@@ -630,6 +630,7 @@ extern void cx88_setup_xc3028(struct cx88_core *core, struct xc2028_ctrl *ctl);
#define WW_EIAJ 7
#define WW_I2SPT 8
#define WW_FM 9
+#define WW_I2SADC 10
void cx88_set_tvaudio(struct cx88_core *core);
void cx88_newstation(struct cx88_core *core);