V4L/DVB (12121): pvrusb2: Improve handling of routing schemes

The pvrusb2 driver has a concept of "routing scheme" which defines
which physical inputs should be connected based on application's
choice of logical input.  The correct "routing scheme" depends on the
specific device since different devices might wire up their muxes
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/pvrusb2/pvrusb2-audio.c

@@ -48,11 +48,13 @@ static const int routing_scheme0[] = {
 						MSP_DSP_IN_SCART),
 };
 
-static const struct routing_scheme routing_schemes[] = {
-	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
+static const struct routing_scheme routing_def0 = {
 	.def = routing_scheme0,
 	.cnt = ARRAY_SIZE(routing_scheme0),
-	},
+};
+
+static const struct routing_scheme *routing_schemes[] = {
+	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
 };
 
 void pvr2_msp3400_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
@@ -65,7 +67,7 @@ void pvr2_msp3400_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 		pvr2_trace(PVR2_TRACE_CHIPS, "subdev msp3400 v4l2 set_stereo");
 
 		if ((sid < ARRAY_SIZE(routing_schemes)) &&
-		    ((sp = routing_schemes + sid) != NULL) &&
+		    ((sp = routing_schemes[sid]) != NULL) &&
 		    (hdw->input_val >= 0) &&
 		    (hdw->input_val < sp->cnt)) {
 			input = sp->def[hdw->input_val];

drivers/media/video/pvrusb2/pvrusb2-cs53l32a.c

@@ -49,11 +49,13 @@ static const int routing_scheme1[] = {
 	[PVR2_CVAL_INPUT_SVIDEO] =  0,
 };
 
-static const struct routing_scheme routing_schemes[] = {
-	[PVR2_ROUTING_SCHEME_ONAIR] = {
+static const struct routing_scheme routing_def1 = {
 	.def = routing_scheme1,
 	.cnt = ARRAY_SIZE(routing_scheme1),
-	},
+};
+
+static const struct routing_scheme *routing_schemes[] = {
+	[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
 };
 
 
@@ -66,7 +68,7 @@ void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
 			   hdw->input_val);
 		if ((sid < ARRAY_SIZE(routing_schemes)) &&
-		    ((sp = routing_schemes + sid) != NULL) &&
+		    ((sp = routing_schemes[sid]) != NULL) &&
 		    (hdw->input_val >= 0) &&
 		    (hdw->input_val < sp->cnt)) {
 			input = sp->def[hdw->input_val];

drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c

@@ -68,6 +68,11 @@ static const struct routing_scheme_item routing_scheme0[] = {
 	},
 };
 
+static const struct routing_scheme routing_def0 = {
+	.def = routing_scheme0,
+	.cnt = ARRAY_SIZE(routing_scheme0),
+};
+
 /* Specific to gotview device */
 static const struct routing_scheme_item routing_schemegv[] = {
 	[PVR2_CVAL_INPUT_TV] = {
@@ -90,15 +95,14 @@ static const struct routing_scheme_item routing_schemegv[] = {
 	},
 };
 
-static const struct routing_scheme routing_schemes[] = {
-	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
-		.def = routing_scheme0,
-		.cnt = ARRAY_SIZE(routing_scheme0),
-	},
-	[PVR2_ROUTING_SCHEME_GOTVIEW] = {
+static const struct routing_scheme routing_defgv = {
 	.def = routing_schemegv,
 	.cnt = ARRAY_SIZE(routing_schemegv),
-	},
+};
+
+static const struct routing_scheme *routing_schemes[] = {
+	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
+	[PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
 };
 
 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
@@ -111,7 +115,7 @@ void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 
 		if ((sid < ARRAY_SIZE(routing_schemes)) &&
-		    ((sp = routing_schemes + sid) != NULL) &&
+		    ((sp = routing_schemes[sid]) != NULL) &&
 		    (hdw->input_val >= 0) &&
 		    (hdw->input_val < sp->cnt)) {
 			vid_input = sp->def[hdw->input_val].vid;

drivers/media/video/pvrusb2/pvrusb2-video-v4l.c

@@ -54,6 +54,11 @@ static const int routing_scheme0[] = {
 	[PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2,
 };
 
+static const struct routing_scheme routing_def0 = {
+	.def = routing_scheme0,
+	.cnt = ARRAY_SIZE(routing_scheme0),
+};
+
 static const int routing_scheme1[] = {
 	[PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
 	[PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
@@ -61,15 +66,14 @@ static const int routing_scheme1[] = {
 	[PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2, /* or SVIDEO0, it seems */
 };
 
-static const struct routing_scheme routing_schemes[] = {
-	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
-		.def = routing_scheme0,
-		.cnt = ARRAY_SIZE(routing_scheme0),
-	},
-	[PVR2_ROUTING_SCHEME_ONAIR] = {
+static const struct routing_scheme routing_def1 = {
 	.def = routing_scheme1,
 	.cnt = ARRAY_SIZE(routing_scheme1),
-	},
+};
+
+static const struct routing_scheme *routing_schemes[] = {
+	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
+	[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
 };
 
 void pvr2_saa7115_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
@@ -82,7 +86,7 @@ void pvr2_saa7115_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
 			   hdw->input_val);
 		if ((sid < ARRAY_SIZE(routing_schemes)) &&
-		    ((sp = routing_schemes + sid) != NULL) &&
+		    ((sp = routing_schemes[sid]) != NULL) &&
 		    (hdw->input_val >= 0) &&
 		    (hdw->input_val < sp->cnt)) {
 			input = sp->def[hdw->input_val];