[media] cx23885: add DVBSky S950C dvb-s/s2 ci PCIe card support(no RC)

DVBSky s950ci dvb-s/s2 ci PCIe card:
1>dvb frontend: M88TS2022(tuner),M88DS3103(demod)
2>ci controller: CIMAX SP2 or its clone.
3>PCIe bridge: CX23885

The patchs are based on the following patchs.
Olli Salonen submit:
https://patchwork.linuxtv.org/patch/26180/
https://patchwork.linuxtv.org/patch/26183/
https://patchwork.linuxtv.org/patch/26324/
Nibble Max submit:
https://patchwork.linuxtv.org/patch/26207/Signed-off-by: Nibble Max <nibble.max@gmail.com>
Reviewed-by: Olli Salonen <olli.salonen@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

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

@@ -684,6 +684,10 @@ struct cx23885_board cx23885_boards[] = {
 		.name		= "DVBSky T980C",
 		.portb		= CX23885_MPEG_DVB,
 	},
+	[CX23885_BOARD_DVBSKY_S950C] = {
+		.name		= "DVBSky S950C",
+		.portb		= CX23885_MPEG_DVB,
+	},
 };
 const unsigned int cx23885_bcount = ARRAY_SIZE(cx23885_boards);
 
@@ -947,6 +951,10 @@ struct cx23885_subid cx23885_subids[] = {
 		.subvendor = 0x4254,
 		.subdevice = 0x980c,
 		.card      = CX23885_BOARD_DVBSKY_T980C,
+	}, {
+		.subvendor = 0x4254,
+		.subdevice = 0x950c,
+		.card      = CX23885_BOARD_DVBSKY_S950C,
 	},
 };
 const unsigned int cx23885_idcount = ARRAY_SIZE(cx23885_subids);
@@ -1550,6 +1558,7 @@ void cx23885_gpio_setup(struct cx23885_dev *dev)
 		cx23885_gpio_set(dev, GPIO_2 | GPIO_11);
 		break;
 	case CX23885_BOARD_DVBSKY_T980C:
+	case CX23885_BOARD_DVBSKY_S950C:
 		/*
 		 * GPIO-0 INTA from CiMax, input
 		 * GPIO-1 reset CiMax, output, high active
@@ -1859,6 +1868,7 @@ void cx23885_card_setup(struct cx23885_dev *dev)
 	case CX23885_BOARD_DVBWORLD_2005:
 	case CX23885_BOARD_PROF_8000:
 	case CX23885_BOARD_DVBSKY_T980C:
+	case CX23885_BOARD_DVBSKY_S950C:
 		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;
@@ -1978,6 +1988,7 @@ void cx23885_card_setup(struct cx23885_dev *dev)
 	case CX23885_BOARD_TBS_6981:
 	case CX23885_BOARD_DVBSKY_T9580:
 	case CX23885_BOARD_DVBSKY_T980C:
+	case CX23885_BOARD_DVBSKY_S950C:
 		dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev,
 				&dev->i2c_bus[2].i2c_adap,
 				"cx25840", 0x88 >> 1, NULL);

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

@@ -635,7 +635,7 @@ static int cx23885_sp2_ci_ctrl(void *priv, u8 read, int addr,
 	struct cx23885_tsport *port = priv;
 	struct cx23885_dev *dev = port->dev;
 	int ret;
-	int tmp;
+	int tmp = 0;
 	unsigned long timeout;
 
 	mutex_lock(&dev->gpio_lock);
@@ -865,6 +865,19 @@ static const struct m88ds3103_config dvbsky_t9580_m88ds3103_config = {
 	.agc = 0x99,
 };
 
+static const struct m88ds3103_config dvbsky_s950c_m88ds3103_config = {
+	.i2c_addr = 0x68,
+	.clock = 27000000,
+	.i2c_wr_max = 33,
+	.clock_out = 0,
+	.ts_mode = M88DS3103_TS_CI,
+	.ts_clk = 10000,
+	.ts_clk_pol = 1,
+	.lnb_en_pol = 1,
+	.lnb_hv_pol = 0,
+	.agc = 0x99,
+};
+
 static int netup_altera_fpga_rw(void *device, int flag, int data, int read)
 {
 	struct cx23885_dev *dev = (struct cx23885_dev *)device;
@@ -1020,7 +1033,7 @@ static int dvb_register(struct cx23885_tsport *port)
 	struct m88ts2022_config m88ts2022_config;
 	struct i2c_board_info info;
 	struct i2c_adapter *adapter;
-	struct i2c_client *client_demod, *client_tuner, *client_ci;
+	struct i2c_client *client_demod = NULL, *client_tuner = NULL, *client_ci = NULL;
 	int mfe_shared = 0; /* bus not shared by default */
 	int ret;
 
@@ -1797,6 +1810,41 @@ static int dvb_register(struct cx23885_tsport *port)
 			i2c_unregister_device(client_demod);
 			goto frontend_detach;
 		}
+		port->i2c_client_tuner = client_tuner;
+		break;
+	case CX23885_BOARD_DVBSKY_S950C:
+		i2c_bus = &dev->i2c_bus[1];
+		i2c_bus2 = &dev->i2c_bus[0];
+
+		/* attach frontend */
+		fe0->dvb.frontend = dvb_attach(m88ds3103_attach,
+				&dvbsky_s950c_m88ds3103_config,
+				&i2c_bus->i2c_adap, &adapter);
+		if (fe0->dvb.frontend == NULL)
+			break;
+
+		/* attach tuner */
+		memset(&m88ts2022_config, 0, sizeof(m88ts2022_config));
+		m88ts2022_config.fe = fe0->dvb.frontend;
+		m88ts2022_config.clock = 27000000;
+		memset(&info, 0, sizeof(struct i2c_board_info));
+		strlcpy(info.type, "m88ts2022", I2C_NAME_SIZE);
+		info.addr = 0x60;
+		info.platform_data = &m88ts2022_config;
+		request_module(info.type);
+		client_tuner = i2c_new_device(adapter, &info);
+		if (client_tuner == NULL ||
+				client_tuner->dev.driver == NULL)
+			goto frontend_detach;
+		if (!try_module_get(client_tuner->dev.driver->owner)) {
+			i2c_unregister_device(client_tuner);
+			goto frontend_detach;
+		}
+
+		/* delegate signal strength measurement to tuner */
+		fe0->dvb.frontend->ops.read_signal_strength =
+			fe0->dvb.frontend->ops.tuner_ops.get_rf_strength;
+
 		port->i2c_client_tuner = client_tuner;
 		break;
 	default:
@@ -1889,6 +1937,7 @@ static int dvb_register(struct cx23885_tsport *port)
 			(port->nr-1) * 8, 6);
 		break;
 		}
+	case CX23885_BOARD_DVBSKY_S950C:
 	case CX23885_BOARD_DVBSKY_T980C: {
 		u8 eeprom[256]; /* 24C02 i2c eeprom */
 
@@ -1905,18 +1954,26 @@ static int dvb_register(struct cx23885_tsport *port)
 		client_ci = i2c_new_device(&i2c_bus2->i2c_adap, &info);
 		if (client_ci == NULL ||
 				client_ci->dev.driver == NULL) {
-			module_put(client_tuner->dev.driver->owner);
-			i2c_unregister_device(client_tuner);
-			module_put(client_demod->dev.driver->owner);
-			i2c_unregister_device(client_demod);
+			if (client_tuner) {
+				module_put(client_tuner->dev.driver->owner);
+				i2c_unregister_device(client_tuner);
+			}
+			if (client_demod) {
+				module_put(client_demod->dev.driver->owner);
+				i2c_unregister_device(client_demod);
+			}
 			goto frontend_detach;
 		}
 		if (!try_module_get(client_ci->dev.driver->owner)) {
 			i2c_unregister_device(client_ci);
-			module_put(client_tuner->dev.driver->owner);
-			i2c_unregister_device(client_tuner);
-			module_put(client_demod->dev.driver->owner);
-			i2c_unregister_device(client_demod);
+			if (client_tuner) {
+				module_put(client_tuner->dev.driver->owner);
+				i2c_unregister_device(client_tuner);
+			}
+			if (client_demod) {
+				module_put(client_demod->dev.driver->owner);
+				i2c_unregister_device(client_demod);
+			}
 			goto frontend_detach;
 		}
 		port->i2c_client_ci = client_ci;
@@ -1928,7 +1985,7 @@ static int dvb_register(struct cx23885_tsport *port)
 		dev->i2c_bus[0].i2c_client.addr = 0xa0 >> 1;
 		tveeprom_read(&dev->i2c_bus[0].i2c_client, eeprom,
 				sizeof(eeprom));
-		printk(KERN_INFO "DVBSky T980C MAC address: %pM\n",
+		printk(KERN_INFO "DVBSky T980C/S950C MAC address: %pM\n",
 			eeprom + 0xc0);
 		memcpy(port->frontends.adapter.proposed_mac, eeprom + 0xc0, 6);
 		break;

drivers/media/pci/cx23885/cx23885.h

@@ -94,6 +94,7 @@
 #define CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP2 44
 #define CX23885_BOARD_DVBSKY_T9580             45
 #define CX23885_BOARD_DVBSKY_T980C             46
+#define CX23885_BOARD_DVBSKY_S950C             47
 
 #define GPIO_0 0x00000001
 #define GPIO_1 0x00000002