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Diffstat (limited to 'linux/drivers/media/video/cx88/cx88-tvaudio.c')
-rw-r--r--linux/drivers/media/video/cx88/cx88-tvaudio.c136
1 files changed, 81 insertions, 55 deletions
diff --git a/linux/drivers/media/video/cx88/cx88-tvaudio.c b/linux/drivers/media/video/cx88/cx88-tvaudio.c
index 0039354cf..76d42b3d8 100644
--- a/linux/drivers/media/video/cx88/cx88-tvaudio.c
+++ b/linux/drivers/media/video/cx88/cx88-tvaudio.c
@@ -167,6 +167,8 @@ static void set_audio_finish(struct cx88_core *core, u32 ctl)
/* unmute */
volume = cx_sread(SHADOW_AUD_VOL_CTL);
cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
+
+ core->last_change = jiffies;
}
/* ----------------------------------------------------------- */
@@ -749,6 +751,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
break;
case WW_BG:
case WW_DK:
+ case WW_M:
case WW_I:
case WW_L:
/* prepare all dsp registers */
@@ -760,6 +763,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
if (0 == cx88_detect_nicam(core)) {
/* fall back to fm / am mono */
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
+ core->audiomode_current = V4L2_TUNER_MODE_MONO;
core->use_nicam = 0;
} else {
core->use_nicam = 1;
@@ -791,6 +795,7 @@ void cx88_set_tvaudio(struct cx88_core *core)
void cx88_newstation(struct cx88_core *core)
{
core->audiomode_manual = UNSET;
+ core->last_change = jiffies;
}
void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
@@ -809,44 +814,42 @@ void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
aud_ctl_names[cx_read(AUD_CTL) & 63]);
core->astat = reg;
-/* TODO
- Reading from AUD_STATUS is not enough
- for auto-detecting sap/dual-fm/nicam.
- Add some code here later.
-*/
-
-# if 0
t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP |
V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
- t->rxsubchans = V4L2_TUNER_SUB_MONO;
+ t->rxsubchans = UNSET;
t->audmode = V4L2_TUNER_MODE_MONO;
+ switch (mode) {
+ case 0:
+ t->audmode = V4L2_TUNER_MODE_STEREO;
+ break;
+ case 1:
+ t->audmode = V4L2_TUNER_MODE_LANG2;
+ break;
+ case 2:
+ t->audmode = V4L2_TUNER_MODE_MONO;
+ break;
+ case 3:
+ t->audmode = V4L2_TUNER_MODE_SAP;
+ break;
+ }
+
switch (core->tvaudio) {
case WW_BTSC:
- t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP;
- t->rxsubchans = V4L2_TUNER_SUB_STEREO;
- if (1 == pilot) {
- /* SAP */
- t->rxsubchans |= V4L2_TUNER_SUB_SAP;
- }
- break;
- case WW_A2_BG:
- case WW_A2_DK:
- case WW_A2_M:
- if (1 == pilot) {
- /* stereo */
- t->rxsubchans =
- V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
- if (0 == mode)
- t->audmode = V4L2_TUNER_MODE_STEREO;
- }
- if (2 == pilot) {
- /* dual language -- FIXME */
- t->rxsubchans =
- V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
- t->audmode = V4L2_TUNER_MODE_LANG1;
+ case WW_BG:
+ case WW_DK:
+ case WW_M:
+ case WW_EIAJ:
+ if (!core->use_nicam) {
+ t->rxsubchans = cx88_dsp_detect_stereo_sap(core);
+ break;
}
break;
+# if 0
+ /* TODO
+ Reading from AUD_STATUS is not enough
+ for auto-detecting sap/dual-fm/nicam.
+ */
case WW_NICAM_BGDKL:
if (0 == mode) {
t->audmode = V4L2_TUNER_MODE_STEREO;
@@ -859,11 +862,20 @@ void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
}
break;
+# endif
default:
/* nothing */
break;
}
-# endif
+
+ /* If software stereo detection is not supported... */
+ if (UNSET == t->rxsubchans) {
+ t->rxsubchans = V4L2_TUNER_SUB_MONO;
+ /* If the hardware itself detected stereo, also return
+ stereo as an available subchannel */
+ if (V4L2_TUNER_MODE_STEREO == t->audmode)
+ t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
+ }
return;
}
@@ -900,6 +912,7 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
break;
case WW_BG:
case WW_DK:
+ case WW_M:
case WW_I:
case WW_L:
if (1 == core->use_nicam) {
@@ -925,20 +938,18 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
} else {
/* TODO: Add A2 autodection */
+ mask = 0x3f;
switch (mode) {
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
- set_audio_standard_A2(core,
- EN_A2_FORCE_MONO1);
+ ctl = EN_A2_FORCE_MONO1;
break;
case V4L2_TUNER_MODE_LANG2:
- set_audio_standard_A2(core,
- EN_A2_FORCE_MONO2);
+ ctl = EN_A2_FORCE_MONO2;
break;
case V4L2_TUNER_MODE_STEREO:
case V4L2_TUNER_MODE_LANG1_LANG2:
- set_audio_standard_A2(core,
- EN_A2_FORCE_STEREO);
+ ctl = EN_A2_FORCE_STEREO;
break;
}
}
@@ -985,24 +996,39 @@ int cx88_audio_thread(void *data)
break;
try_to_freeze();
- /* just monitor the audio status for now ... */
- memset(&t, 0, sizeof(t));
- cx88_get_stereo(core, &t);
-
- if (UNSET != core->audiomode_manual)
- /* manually set, don't do anything. */
- continue;
-
- /* monitor signal */
- if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
- mode = V4L2_TUNER_MODE_STEREO;
- else
- mode = V4L2_TUNER_MODE_MONO;
- if (mode == core->audiomode_current)
- continue;
-
- /* automatically switch to best available mode */
- cx88_set_stereo(core, mode, 0);
+ switch (core->tvaudio) {
+ case WW_BG:
+ case WW_DK:
+ case WW_M:
+ case WW_I:
+ case WW_L:
+ if (core->use_nicam)
+ goto hw_autodetect;
+
+ /* just monitor the audio status for now ... */
+ memset(&t, 0, sizeof(t));
+ cx88_get_stereo(core, &t);
+
+ if (UNSET != core->audiomode_manual)
+ /* manually set, don't do anything. */
+ continue;
+
+ /* monitor signal and set stereo if available */
+ if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
+ mode = V4L2_TUNER_MODE_STEREO;
+ else
+ mode = V4L2_TUNER_MODE_MONO;
+ if (mode == core->audiomode_current)
+ continue;
+ /* automatically switch to best available mode */
+ cx88_set_stereo(core, mode, 0);
+ break;
+ default:
+hw_autodetect:
+ /* stereo autodetection is supported by hardware so
+ we don't need to do it manually. Do nothing. */
+ break;
+ }
}
dprintk("cx88: tvaudio thread exiting\n");
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-05 04:28:48 +0000