V4L/DVB (10266): Add support for TurboSight TBS6920 DVB-S2 PCI-e card.

TurboSight TBS6920 DVB-S2 PCI-e card contains cx23885 PCI-e bridge
and cx24116 demodulator.
http://www.linuxtv.org/wiki/index.php/TBS_6920
The card tested by me (Igor).
Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Documentation/video4linux/CARDLIST.cx23885

@@ -12,3 +12,4 @@
  11 -> DViCO FusionHDTV DVB-T Dual Express                 [18ac:db78]
  12 -> Leadtek Winfast PxDVR3200 H                         [107d:6681]
  13 -> Compro VideoMate E650F                              [185b:e800]
+ 14 -> TurboSight TBS 6920                                 [6920:8888]

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

@@ -162,6 +162,10 @@ struct cx23885_board cx23885_boards[] = {
 		.name		= "Compro VideoMate E650F",
 		.portc		= CX23885_MPEG_DVB,
 	},
+	[CX23885_BOARD_TBS_6920] = {
+		.name		= "TurboSight TBS 6920",
+		.portb		= CX23885_MPEG_DVB,
+	},
 };
 const unsigned int cx23885_bcount = ARRAY_SIZE(cx23885_boards);
 
@@ -245,6 +249,10 @@ struct cx23885_subid cx23885_subids[] = {
 		.subvendor = 0x185b,
 		.subdevice = 0xe800,
 		.card      = CX23885_BOARD_COMPRO_VIDEOMATE_E650F,
+	}, {
+		.subvendor = 0x6920,
+		.subdevice = 0x8888,
+		.card      = CX23885_BOARD_TBS_6920,
 	},
 };
 const unsigned int cx23885_idcount = ARRAY_SIZE(cx23885_subids);
@@ -552,6 +560,11 @@ void cx23885_gpio_setup(struct cx23885_dev *dev)
 		mdelay(20);
 		cx_set(GP0_IO, 0x00040004);
 		break;
+	case CX23885_BOARD_TBS_6920:
+		cx_write(MC417_CTL, 0x00000036);
+		cx_write(MC417_OEN, 0x00001000);
+		cx_write(MC417_RWD, 0x00001800);
+		break;
 	}
 }
 
@@ -632,6 +645,11 @@ void cx23885_card_setup(struct cx23885_dev *dev)
 		ts2->ts_clk_en_val = 0x1; /* Enable TS_CLK */
 		ts2->src_sel_val   = CX23885_SRC_SEL_PARALLEL_MPEG_VIDEO;
 		break;
+	case CX23885_BOARD_TBS_6920:
+		ts1->gen_ctrl_val  = 0x5; /* Parallel */
+		ts1->ts_clk_en_val = 0x1; /* Enable TS_CLK */
+		ts1->src_sel_val   = CX23885_SRC_SEL_PARALLEL_MPEG_VIDEO;
+		break;
 	case CX23885_BOARD_HAUPPAUGE_HVR1250:
 	case CX23885_BOARD_HAUPPAUGE_HVR1500:
 	case CX23885_BOARD_HAUPPAUGE_HVR1500Q:

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

@@ -43,6 +43,7 @@
 #include "dib7000p.h"
 #include "dibx000_common.h"
 #include "zl10353.h"
+#include "cx24116.h"
 
 static unsigned int debug;
 
@@ -308,6 +309,24 @@ static struct zl10353_config dvico_fusionhdtv_xc3028 = {
 	.no_tuner      = 1,
 };
 
+static int tbs_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
+{
+	struct cx23885_tsport *port = fe->dvb->priv;
+	struct cx23885_dev *dev = port->dev;
+
+	if (voltage == SEC_VOLTAGE_18)
+		cx_write(MC417_RWD, 0x00001e00);/* GPIO-13 high */
+	else if (voltage == SEC_VOLTAGE_13)
+		cx_write(MC417_RWD, 0x00001a00);/* GPIO-13 low */
+	else
+		cx_write(MC417_RWD, 0x00001800);/* GPIO-12 low */
+	return 0;
+}
+
+static struct cx24116_config tbs_cx24116_config = {
+	.demod_address = 0x05,
+};
+
 static int dvb_register(struct cx23885_tsport *port)
 {
 	struct cx23885_dev *dev = port->dev;
@@ -525,6 +544,16 @@ static int dvb_register(struct cx23885_tsport *port)
 			if (fe != NULL && fe->ops.tuner_ops.set_config != NULL)
 				fe->ops.tuner_ops.set_config(fe, &ctl);
 		}
+		break;
+	case CX23885_BOARD_TBS_6920:
+		i2c_bus = &dev->i2c_bus[0];
+
+		fe0->dvb.frontend = dvb_attach(cx24116_attach,
+			&tbs_cx24116_config,
+			&i2c_bus->i2c_adap);
+		if (fe0->dvb.frontend != NULL)
+			fe0->dvb.frontend->ops.set_voltage = tbs_set_voltage;
+
 		break;
 	default:
 		printk(KERN_INFO "%s: The frontend of your DVB/ATSC card "

drivers/media/video/cx23885/cx23885.h

@@ -67,6 +67,7 @@
 #define CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP 11
 #define CX23885_BOARD_LEADTEK_WINFAST_PXDVR3200_H 12
 #define CX23885_BOARD_COMPRO_VIDEOMATE_E650F   13
+#define CX23885_BOARD_TBS_6920                 14
 
 /* Currently unsupported by the driver: PAL/H, NTSC/Kr, SECAM B/G/H/LC */
 #define CX23885_NORMS (\