V4L/DVB (4814): Remote support for Avermedia 777

I didn't test it personally since I don't have this card, but A16AR uses the
same interface and that one certainly does work perfectly (see the next patch).
This patch was originally sent in
http://marc.theaimsgroup.com/?l=linux-video&m=114743413825375&w=2
https://www.redhat.com/mailman/private/video4linux-list/2006-May/msg00103.html
but never got applied. This version has some trivial modifications and drops
the weird gpio hack (it's not clear what practical purpose does it serve).

Signed-off-by: Jose Alberto Reguero <[e-mail]>
Signed-off-by: Petr Baudis <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

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

···
 	case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
 	case SAA7134_BOARD_AVERMEDIA_307:
 	case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
+	case SAA7134_BOARD_AVERMEDIA_777:
 /*      case SAA7134_BOARD_SABRENT_SBTTVFM:  */ /* not finished yet */
 	case SAA7134_BOARD_VIDEOMATE_TV_PVR:
 	case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:

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

···
 		saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
 		saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
 		break;
+	case SAA7134_BOARD_AVERMEDIA_777:
+		ir_codes     = ir_codes_avermedia;
+		mask_keycode = 0x02F200;
+		mask_keydown = 0x000400;
+		polling      = 50; // ms
+		/* Without this we won't receive key up events */
+		saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
+		saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 	case SAA7134_BOARD_KWORLD_TERMINATOR:
 		ir_codes     = ir_codes_pixelview;
 		mask_keycode = 0x00001f;