V4L/DVB (3709): Improve line-in handling
- improve handling of the EXTERN input: don't start an unnecessary carrier scan
- improve the LOG_STATUS output
- ensure that a carrier scan is started again when switching back to the tuner.
- set correct prescale for L-NICAM
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/msp3400-kthreads.c b/drivers/media/video/msp3400-kthreads.c
index 633a102..f2fd919 100644
--- a/drivers/media/video/msp3400-kthreads.c
+++ b/drivers/media/video/msp3400-kthreads.c
@@ -244,19 +244,21 @@
the hardware does not support SAP. So the rxsubchans combination
of STEREO | LANG2 does not occur. */
- /* switch to mono if only mono is available */
- if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
- audmode = V4L2_TUNER_MODE_MONO;
- /* if bilingual */
- else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
- /* and mono or stereo, then fallback to lang1 */
- if (audmode == V4L2_TUNER_MODE_MONO ||
- audmode == V4L2_TUNER_MODE_STEREO)
- audmode = V4L2_TUNER_MODE_LANG1;
+ if (state->mode != MSP_MODE_EXTERN) {
+ /* switch to mono if only mono is available */
+ if (state->rxsubchans == V4L2_TUNER_SUB_MONO)
+ audmode = V4L2_TUNER_MODE_MONO;
+ /* if bilingual */
+ else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) {
+ /* and mono or stereo, then fallback to lang1 */
+ if (audmode == V4L2_TUNER_MODE_MONO ||
+ audmode == V4L2_TUNER_MODE_STEREO)
+ audmode = V4L2_TUNER_MODE_LANG1;
+ }
+ /* if stereo, and audmode is not mono, then switch to stereo */
+ else if (audmode != V4L2_TUNER_MODE_MONO)
+ audmode = V4L2_TUNER_MODE_STEREO;
}
- /* if stereo, and audmode is not mono, then switch to stereo */
- else if (audmode != V4L2_TUNER_MODE_MONO)
- audmode = V4L2_TUNER_MODE_STEREO;
/* switch demodulator */
switch (state->mode) {
@@ -481,6 +483,7 @@
/* no carrier scan, just unmute */
v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
state->scan_in_progress = 0;
+ state->rxsubchans = V4L2_TUNER_SUB_STEREO;
msp_set_audio(client);
continue;
}
@@ -947,6 +950,14 @@
if (kthread_should_stop())
break;
+ if (state->mode == MSP_MODE_EXTERN) {
+ /* no carrier scan needed, just unmute */
+ v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
+ state->scan_in_progress = 0;
+ msp_set_audio(client);
+ continue;
+ }
+
/* setup the chip*/
msp34xxg_reset(client);
state->std = state->radio ? 0x40 : msp_standard;
@@ -978,6 +989,11 @@
v4l_dbg(1, msp_debug, client, "detected standard: %s (0x%04x)\n",
msp_standard_std_name(state->std), state->std);
+ if (state->std == 9) {
+ /* AM NICAM mode */
+ msp_write_dsp(client, 0x0e, 0x7c00);
+ }
+
/* unmute: dispatch sound to scart output, set scart volume */
msp_set_audio(client);