V4L/DVB (3504): Medion 7134: Autodetect second bridge chip

The device, Medion 7134, has two saa7134 chips on it, but only one of them
is functional in the current saa7134 driver.
This patch adds autodetection for the second, unsupported saa7134 chip,
as SAA7134_BOARD_MD7134_BRIDGE_2, and displays a message to the user
(in dmesg) indicating that the second chip isn't yet functional.
This is useful for users, since two instances of the saa7134 driver
will spawn. This patch will prevent confusion by warning the user that
only one of the chips on the board are functional.
There are other versions of the SAA7134_BOARD_MD7134 with only a single
saa7134 bridge/decoder -- those devices will not be affected by this patch.
Only devices containing the second chip will display the warning.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

Documentation/video4linux/CARDLIST.saa7134

@@ -91,3 +91,4 @@
  90 -> Kworld ATSC110                           [17de:7350]
  91 -> AVerMedia A169 B                         [1461:7360]
  92 -> AVerMedia A169 B1                        [1461:6360]
+ 93 -> Medion 7134 Bridge #2                    [16be:0005]

drivers/media/video/saa7134/saa7134-cards.c

@@ -2797,6 +2797,17 @@ struct saa7134_board saa7134_boards[] = {
 			.amux = LINE1,
 		}},
 	},
+	[SAA7134_BOARD_MD7134_BRIDGE_2] = {
+		/* This card has two saa7134 chips on it,
+		   but only one of them is currently working.
+		   The programming for the primary decoder is
+		   in SAA7134_BOARD_MD7134 */
+		.name           = "Medion 7134 Bridge #2",
+		.audio_clock    = 0x00187de7,
+		.radio_type     = UNSET,
+		.tuner_addr	= ADDR_UNSET,
+		.radio_addr	= ADDR_UNSET,
+	},
 };
 
 const unsigned int saa7134_bcount = ARRAY_SIZE(saa7134_boards);
@@ -3315,6 +3326,12 @@ struct pci_device_id saa7134_pci_tbl[] = {
 		.subvendor    = 0x1461,
 		.subdevice    = 0x6360,
 		.driver_data  = SAA7134_BOARD_AVERMEDIA_A169_B1,
+	},{
+		.vendor       = PCI_VENDOR_ID_PHILIPS,
+		.device       = PCI_DEVICE_ID_PHILIPS_SAA7134,
+		.subvendor    = 0x16be,
+		.subdevice    = 0x0005,
+		.driver_data  = SAA7134_BOARD_MD7134_BRIDGE_2,
 	},{
 		/* --- boards without eeprom + subsystem ID --- */
 		.vendor       = PCI_VENDOR_ID_PHILIPS,
@@ -3471,6 +3488,7 @@ int saa7134_board_init1(struct saa7134_dev *dev)
 		dev->has_remote = SAA7134_REMOTE_I2C;
 		break;
 	case SAA7134_BOARD_AVERMEDIA_A169_B:
+	case SAA7134_BOARD_MD7134_BRIDGE_2:
 		printk("%s: %s: dual saa713x broadcast decoders\n"
 		       "%s: Sorry, none of the inputs to this chip are supported yet.\n"
 		       "%s: Dual decoder functionality is disabled for now, use the other chip.\n",

drivers/media/video/saa7134/saa7134.h

@@ -220,6 +220,7 @@ struct saa7134_format {
 #define SAA7134_BOARD_KWORLD_ATSC110   90
 #define SAA7134_BOARD_AVERMEDIA_A169_B 91
 #define SAA7134_BOARD_AVERMEDIA_A169_B1 92
+#define SAA7134_BOARD_MD7134_BRIDGE_2     93
 
 #define SAA7134_MAXBOARDS 8
 #define SAA7134_INPUT_MAX 8