V4L/DVB (3697): More msp3400 and bttv fixes

- remove obsolete VIDIOC_S_INPUT i2c call in bttv
- translate VIDIOCSFREQ to VIDIOC_S_FREQUENCY in i2c call
- improve muting during carrier scan in msp3400
- don't start scan unless really needed.
- no longer reset chip for msp3400c/d.
- remove v4l2 check in tuner-core (radio stops after using the TV)
- add missing VIDIOC_INT_ strings in v4l2-common.c

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 27 insertions, 35 deletions

diff --git a/drivers/media/video/msp3400-kthreads.c b/drivers/media/video/msp3400-kthreads.c
index 926095c6d82..b41ee9afbd9 100644
--- a/drivers/media/video/msp3400-kthreads.c
+++ b/drivers/media/video/msp3400-kthreads.c
@@ -383,7 +383,7 @@ static int msp3400c_detect_stereo(struct i2c_client *client)
 		if (val > 32767)
 			val -= 65536;
 		v4l_dbg(2, msp_debug, client, "stereo detect register: %d\n", val);
-		if (val > 4096) {
+		if (val > 8192) {
 			rxsubchans = V4L2_TUNER_SUB_STEREO;
 		} else if (val < -4096) {
 			rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
@@ -480,12 +480,14 @@ int msp3400c_thread(void *data)
 		if (state->radio || MSP_MODE_EXTERN == state->mode) {
 			/* no carrier scan, just unmute */
 			v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n");
+			state->scan_in_progress = 0;
 			msp_set_audio(client);
 			continue;
 		}
 
-		/* put into sane state (and mute) */
-		msp_reset(client);
+		/* mute audio */
+		state->scan_in_progress = 1;
+		msp_set_audio(client);
 
 		msp3400c_set_mode(client, MSP_MODE_AM_DETECT);
 		val1 = val2 = 0;
@@ -493,7 +495,7 @@ int msp3400c_thread(void *data)
 		state->watch_stereo = 0;
 		state->nicam_on = 0;
 
-		/* some time for the tuner to sync */
+		/* wait for tuner to settle down after a channel change */
 		if (msp_sleep(state, 200))
 			goto restart;
 
@@ -608,28 +610,26 @@ int msp3400c_thread(void *data)
 		no_second:
 			state->second = msp3400c_carrier_detect_main[max1].cdo;
 			msp3400c_set_mode(client, MSP_MODE_FM_TERRA);
-			state->rxsubchans = V4L2_TUNER_SUB_MONO;
 			break;
 		}
 		msp3400c_set_carrier(client, state->second, state->main);
 
-		/* unmute, restore misc registers */
-		msp_set_audio(client);
-
-		msp_write_dsp(client, 0x13, state->acb);
+		/* unmute */
+		state->scan_in_progress = 0;
 		msp3400c_set_audmode(client);
+		msp_set_audio(client);
 
 		if (msp_debug)
 			msp3400c_print_mode(client);
 
 		/* monitor tv audio mode, the first time don't wait
 		   so long to get a quick stereo/bilingual result */
-		count = 20;
+		count = 3;
 		while (state->watch_stereo) {
-			watch_stereo(client);
-			if (msp_sleep(state, count ? 200 : 5000))
+			if (msp_sleep(state, count ? 1000 : 5000))
 				goto restart;
 			if (count) count--;
+			watch_stereo(client);
 		}
 	}
 	v4l_dbg(1, msp_debug, client, "thread: exit\n");
@@ -659,16 +659,14 @@ int msp3410d_thread(void *data)
 		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;
 		}
 
-		/* put into sane state (and mute) */
-		msp_reset(client);
-
-		/* some time for the tuner to sync */
-		if (msp_sleep(state,200))
-			goto restart;
+		/* mute audio */
+		state->scan_in_progress = 1;
+		msp_set_audio(client);
 
 		/* start autodetect. Note: autodetect is not supported for
 		   NTSC-M and radio, hence we force the standard in those cases. */
@@ -679,6 +677,10 @@ int msp3410d_thread(void *data)
 		state->watch_stereo = 0;
 		state->nicam_on = 0;
 
+		/* wait for tuner to settle down after a channel change */
+		if (msp_sleep(state, 200))
+			goto restart;
+
 		if (msp_debug)
 			v4l_dbg(2, msp_debug, client, "setting standard: %s (0x%04x)\n",
 			       msp_standard_std_name(std), std);
@@ -708,6 +710,7 @@ int msp3410d_thread(void *data)
 		state->main   = msp_stdlist[i].main;
 		state->second = msp_stdlist[i].second;
 		state->std = val;
+		state->rxsubchans = V4L2_TUNER_SUB_MONO;
 
 		if (msp_amsound && !state->radio && (state->v4l2_std & V4L2_STD_SECAM) &&
 				(val != 0x0009)) {
@@ -729,20 +732,17 @@ int msp3410d_thread(void *data)
 			else
 				state->mode = MSP_MODE_FM_NICAM1;
 			/* just turn on stereo */
-			state->rxsubchans = V4L2_TUNER_SUB_STEREO;
 			state->nicam_on = 1;
 			state->watch_stereo = 1;
 			break;
 		case 0x0009:
 			state->mode = MSP_MODE_AM_NICAM;
-			state->rxsubchans = V4L2_TUNER_SUB_MONO;
 			state->nicam_on = 1;
 			state->watch_stereo = 1;
 			break;
 		case 0x0020: /* BTSC */
 			/* The pre-'G' models only have BTSC-mono */
 			state->mode = MSP_MODE_BTSC;
-			state->rxsubchans = V4L2_TUNER_SUB_MONO;
 			break;
 		case 0x0040: /* FM radio */
 			state->mode = MSP_MODE_FM_RADIO;
@@ -752,15 +752,12 @@ int msp3410d_thread(void *data)
 			msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
 			msp3400c_set_carrier(client, MSP_CARRIER(10.7),
 					    MSP_CARRIER(10.7));
-			/* scart routing (this doesn't belong here I think) */
-			msp_set_scart(client,SCART_IN2,0);
 			break;
 		case 0x0002:
 		case 0x0003:
 		case 0x0004:
 		case 0x0005:
 			state->mode = MSP_MODE_FM_TERRA;
-			state->rxsubchans = V4L2_TUNER_SUB_MONO;
 			state->watch_stereo = 1;
 			break;
 		}
@@ -774,20 +771,19 @@ int msp3410d_thread(void *data)
 		if (state->has_i2s_conf)
 			msp_write_dem(client, 0x40, state->i2s_mode);
 
-		/* unmute, restore misc registers */
-		msp_set_audio(client);
-
-		msp_write_dsp(client, 0x13, state->acb);
+		/* unmute */
 		msp3400c_set_audmode(client);
+		state->scan_in_progress = 0;
+		msp_set_audio(client);
 
 		/* monitor tv audio mode, the first time don't wait
 		   so long to get a quick stereo/bilingual result */
-		count = 20;
+		count = 3;
 		while (state->watch_stereo) {
-			watch_stereo(client);
-			if (msp_sleep(state, count ? 200 : 5000))
+			if (msp_sleep(state, count ? 1000 : 5000))
 				goto restart;
 			if (count) count--;
+			watch_stereo(client);
 		}
 	}
 	v4l_dbg(1, msp_debug, client, "thread: exit\n");
@@ -902,10 +898,6 @@ static void msp34xxg_reset(struct i2c_client *client)
 
 	msp_reset(client);
 
-	/* make sure that input/output is muted (paranoid mode) */
-	/* ACB, mute DSP input, mute SCART 1 */
-	msp_write_dsp(client, 0x13, 0x0f20);
-
 	if (state->has_i2s_conf)
 		msp_write_dem(client, 0x40, state->i2s_mode);