V4L/DVB (7986): cx23885: add initial support for DViCO FusionHDTV7 Dual Express

Only one frontend is enabled right now. The second frontend can lock,
but transport doesn't work yet.  The device will be supported as a
single tuner device until the second frontend is working.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

Documentation/video4linux/CARDLIST.cx23885

@@ -8,3 +8,4 @@
   7 -> Hauppauge WinTV-HVR1200                             [0070:71d1,0070:71d3]
   8 -> Hauppauge WinTV-HVR1700                             [0070:8101]
   9 -> Hauppauge WinTV-HVR1400                             [0070:8010]
+ 10 -> DViCO FusionHDTV7 Dual Express                      [18ac:d618]

drivers/media/video/cx23885/cx23885-cards.c

@@ -143,6 +143,10 @@ struct cx23885_board cx23885_boards[] = {
 		.name		= "Hauppauge WinTV-HVR1400",
 		.portc		= CX23885_MPEG_DVB,
 	},
+	[CX23885_BOARD_DVICO_FUSIONHDTV_7_DUAL_EXP] = {
+		.name		= "DViCO FusionHDTV7 Dual Express",
+		.portc		= CX23885_MPEG_DVB,
+	},
 };
 const unsigned int cx23885_bcount = ARRAY_SIZE(cx23885_boards);
 
@@ -210,6 +214,10 @@ struct cx23885_subid cx23885_subids[] = {
 		.subvendor = 0x0070,
 		.subdevice = 0x8010,
 		.card      = CX23885_BOARD_HAUPPAUGE_HVR1400,
+	},{
+		.subvendor = 0x18ac,
+		.subdevice = 0xd618,
+		.card      = CX23885_BOARD_DVICO_FUSIONHDTV_7_DUAL_EXP,
 	},
 };
 const unsigned int cx23885_idcount = ARRAY_SIZE(cx23885_subids);
@@ -477,6 +485,11 @@ void cx23885_card_setup(struct cx23885_dev *dev)
 	}
 
 	switch (dev->board) {
+	case CX23885_BOARD_DVICO_FUSIONHDTV_7_DUAL_EXP:
+		ts2->gen_ctrl_val  = 0xc; /* Serial bus + punctured clock */
+		ts2->ts_clk_en_val = 0x1; /* Enable TS_CLK */
+		ts2->src_sel_val   = CX23885_SRC_SEL_PARALLEL_MPEG_VIDEO;
+		/* break omitted intentionally */
 	case CX23885_BOARD_DVICO_FUSIONHDTV_5_EXP:
 		ts1->gen_ctrl_val  = 0xc; /* Serial bus + punctured clock */
 		ts1->ts_clk_en_val = 0x1; /* Enable TS_CLK */

drivers/media/video/cx23885/cx23885-dvb.c

@@ -164,12 +164,28 @@ static struct s5h1409_config hauppauge_hvr1500q_config = {
 	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
 };
 
+static struct s5h1409_config dvico_s5h1409_config = {
+	.demod_address = 0x32 >> 1,
+	.output_mode   = S5H1409_SERIAL_OUTPUT,
+	.gpio          = S5H1409_GPIO_ON,
+	.qam_if        = 44000,
+	.inversion     = S5H1409_INVERSION_OFF,
+	.status_mode   = S5H1409_DEMODLOCKING,
+	.mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
+};
+
 static struct xc5000_config hauppauge_hvr1500q_tunerconfig = {
 	.i2c_address      = 0x61,
 	.if_khz           = 5380,
 	.tuner_callback   = cx23885_tuner_callback
 };
 
+static struct xc5000_config dvico_xc5000_tunerconfig = {
+	.i2c_address      = 0x64,
+	.if_khz           = 5380,
+	.tuner_callback   = cx23885_tuner_callback
+};
+
 static struct tda829x_config tda829x_no_probe = {
 	.probe_tuner = TDA829X_DONT_PROBE,
 };
@@ -453,6 +469,17 @@ static int dvb_register(struct cx23885_tsport *port)
 				fe->ops.tuner_ops.set_config(fe, &ctl);
 		}
 		break;
+	case CX23885_BOARD_DVICO_FUSIONHDTV_7_DUAL_EXP:
+		i2c_bus = &dev->i2c_bus[port->nr - 1];
+
+		port->dvb.frontend = dvb_attach(s5h1409_attach,
+						&dvico_s5h1409_config,
+						&i2c_bus->i2c_adap);
+		if (port->dvb.frontend != NULL)
+			dvb_attach(xc5000_attach, port->dvb.frontend,
+				&i2c_bus->i2c_adap,
+				&dvico_xc5000_tunerconfig, i2c_bus);
+		break;
 	default:
 		printk("%s: The frontend of your DVB/ATSC card isn't supported yet\n",
 		       dev->name);

drivers/media/video/cx23885/cx23885.h

@@ -63,6 +63,7 @@
 #define CX23885_BOARD_HAUPPAUGE_HVR1200        7
 #define CX23885_BOARD_HAUPPAUGE_HVR1700        8
 #define CX23885_BOARD_HAUPPAUGE_HVR1400        9
+#define CX23885_BOARD_DVICO_FUSIONHDTV_7_DUAL_EXP 10
 
 /* Currently unsupported by the driver: PAL/H, NTSC/Kr, SECAM B/G/H/LC */
 #define CX23885_NORMS (\