[media] drxk: Switch the delivery system on FE_SET_PROPERTY

The DRX-K doesn't change the delivery system at set_properties,
but do it at frontend init. This causes problems on programs like
w_scan that, by default, opens both frontends.

Instead, explicitly set the format when set_parameters callback is
called.

Tested-by: Eddi De Pieri <eddi@depieri.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/drxk_hard.c

@@ -1847,13 +1847,16 @@ static int SetOperationMode(struct drxk_state *state,
 		*/
 	switch (oMode) {
 	case OM_DVBT:
+		dprintk(1, ": DVB-T\n");
 		state->m_OperationMode = oMode;
 		status = SetDVBTStandard(state, oMode);
 		if (status < 0)
 			goto error;
 		break;
 	case OM_QAM_ITU_A:	/* fallthrough */
 	case OM_QAM_ITU_C:
+		dprintk(1, ": DVB-C Annex %c\n",
+			(state->m_OperationMode == OM_QAM_ITU_A) ? 'A' : 'C');
 		state->m_OperationMode = oMode;
 		status = SetQAMStandard(state, oMode);
 		if (status < 0)
@@ -6183,7 +6186,10 @@ static int drxk_c_init(struct dvb_frontend *fe)
 	dprintk(1, "\n");
 	if (mutex_trylock(&state->ctlock) == 0)
 		return -EBUSY;
-	SetOperationMode(state, OM_QAM_ITU_A);
+	if (state->m_itut_annex_c)
+		SetOperationMode(state, OM_QAM_ITU_C);
+	else
+		SetOperationMode(state, OM_QAM_ITU_A);
 	return 0;
 }
 
@@ -6219,12 +6225,11 @@ static int drxk_set_parameters(struct dvb_frontend *fe,
 		return -EINVAL;
 	}
 
-	if (state->m_OperationMode == OM_QAM_ITU_A ||
-	    state->m_OperationMode == OM_QAM_ITU_C) {
+	if (fe->ops.info.type == FE_QAM) {
 		if (fe->dtv_property_cache.rolloff == ROLLOFF_13)
-			state->m_OperationMode = OM_QAM_ITU_C;
+			state->m_itut_annex_c = true;
 		else
-			state->m_OperationMode = OM_QAM_ITU_A;
+			state->m_itut_annex_c = false;
 	}
 
 	if (fe->ops.i2c_gate_ctrl)

drivers/media/dvb/frontends/drxk_hard.h

@@ -263,6 +263,8 @@ struct drxk_state {
 	u8     m_TSDataStrength;
 	u8     m_TSClockkStrength;
 
+	bool   m_itut_annex_c;      /* If true, uses ITU-T DVB-C Annex C, instead of Annex A */
+
 	enum DRXMPEGStrWidth_t  m_widthSTR;    /**< MPEG start width */
 	u32    m_mpegTsStaticBitrate;          /**< Maximum bitrate in b/s in case
 						    static clockrate is selected */

drivers/media/video/em28xx/em28xx-dvb.c

@@ -899,6 +899,8 @@ static int em28xx_dvb_init(struct em28xx *dev)
 		       &dvb->fe[0]->ops.tuner_ops,
 		       sizeof(dvb->fe[0]->ops.tuner_ops));
 
+		mfe_shared = 1;
+
 		break;
 	}
 	case EM2884_BOARD_TERRATEC_H5:
@@ -935,6 +937,8 @@ static int em28xx_dvb_init(struct em28xx *dev)
 		       &dvb->fe[0]->ops.tuner_ops,
 		       sizeof(dvb->fe[0]->ops.tuner_ops));
 
+		mfe_shared = 1;
+
 		break;
 	case EM28174_BOARD_PCTV_460E:
 		/* attach demod */