V4L/DVB (5497): Additional card support for bttv driver

SSAI (www.ssai.us) makes several Bt878-based capture cards that get used in our
surveillance, conferencing, and medical imaging systems. The attached
relatively small patch adds support for these cards, which fall into two broad
* boards with one or more Bt878s, one or more composite inputs, and no S-video
or tuner inputs
* boards with one Bt878, one composite input, one S-video input, and no tuner
input

Signed-off-by: Scott Alfter <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

Documentation/video4linux/CARDLIST.bttv

···
 142 -> Sabrent TV-FM (bttv version)
 143 -> Hauppauge ImpactVCB (bt878)                         [0070:13eb]
 144 -> MagicTV
+145 -> SSAI Security Video Interface                       [4149:5353]
+146 -> SSAI Ultrasound Video Interface                     [414a:5353]

drivers/media/video/bt8xx/bttv-cards.c

···
 
 	{ 0x15409511, BTTV_BOARD_ACORP_Y878F, "Acorp Y878F" },
 
+	{ 0x53534149, BTTV_BOARD_SSAI_SECURITY, "SSAI Security Video Interface" },
+	{ 0x5353414a, BTTV_BOARD_SSAI_ULTRASOUND, "SSAI Ultrasound Video Interface" },
+
 	/* likely broken, vendor id doesn't match the other magic views ...
 	 * { 0xa0fca04f, BTTV_BOARD_MAGICTVIEW063, "Guillemot Maxi TV Video 3" }, */
 
···
 		.pll            = PLL_28,
 		.has_radio      = 1,
 		.has_remote     = 1,
+	},
+	[BTTV_BOARD_SSAI_SECURITY] = {
+		.name		= "SSAI Security Video Interface",
+		.video_inputs	= 4,
+		.audio_inputs	= 0,
+		.tuner		= -1,
+		.svhs		= -1,
+		.muxsel		= { 0, 1, 2, 3 },
+		.tuner_type	= -1,
+		.tuner_addr	= ADDR_UNSET,
+		.radio_addr     = ADDR_UNSET,
+	},
+	[BTTV_BOARD_SSAI_ULTRASOUND] = {
+		.name		= "SSAI Ultrasound Video Interface",
+		.video_inputs	= 2,
+		.audio_inputs	= 0,
+		.tuner		= -1,
+		.svhs		= 1,
+		.muxsel		= { 2, 0, 1, 3 },
+		.tuner_type	= -1,
+		.tuner_addr	= ADDR_UNSET,
+		.radio_addr     = ADDR_UNSET,
 	},
 };
 

drivers/media/video/bt8xx/bttv.h

···
 #define BTTV_BOARD_SABRENT_TVFM   	   0x8e
 #define BTTV_BOARD_HAUPPAUGE_IMPACTVCB     0x8f
 #define BTTV_BOARD_MACHTV_MAGICTV          0x90
+#define BTTV_BOARD_SSAI_SECURITY	   0x91
+#define BTTV_BOARD_SSAI_ULTRASOUND	   0x92
 
 /* more card-specific defines */
 #define PT2254_L_CHANNEL 0x10