V4L/DVB (3580): Last round of msp3400 cleanups before adding routing commands

Lots of cleanups:
- remove duplicate actions
- add D/K3 Dual FM-Stereo and D/K NICAM FM (HDEV3) support
- put prescales in the proper place
- add missing D/K NICAM
- msp34xxg_reset now only resets instead of also starting the autodetect
  (moved that to msp34xxg_thread)
- fix support for SAP.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/msp3400-driver.c

@@ -622,6 +622,7 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 
 		if (va->mode != 0 && state->radio == 0) {
 			state->audmode = msp_mode_v4l1_to_v4l2(va->mode);
+			msp_set_audmode(client);
 		}
 		break;
 	}
@@ -707,7 +708,6 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
 		if (scart >= 0) {
 			state->rxsubchans = V4L2_TUNER_SUB_STEREO;
 			msp_set_scart(client, scart, 0);
-			msp_write_dsp(client, 0x000d, 0x1900);
 		}
 		msp_set_audmode(client);
 		msp_wake_thread(client);

drivers/media/video/msp3400.h

@@ -103,7 +103,7 @@ int msp_sleep(struct msp_state *state, int timeout);
 /* msp3400-kthreads.c */
 const char *msp_standard_std_name(int std);
 void msp_set_audmode(struct i2c_client *client);
-void msp_detect_stereo(struct i2c_client *client);
+int msp_detect_stereo(struct i2c_client *client);
 int msp3400c_thread(void *data);
 int msp3410d_thread(void *data);
 int msp34xxg_thread(void *data);