[media] saa7134-input: key up events not sent after suspend/resume

On my AverMedia AverTV Studio 507, key up events are no longer sent after
a suspend-to-disk/resume cycle, resulting in "stuck" keys.

Apparently, for key up events to be generated, a certain GPIO pin must be set.
Currently it's set in saa7134_input_init1(), but that function is not called
on device resume. I suggest that code be moved to __saa7134_ir_start(), which
is called both on init and resume.
Signed-off-by: Vadim Solomin <vadic052@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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

@@ -414,6 +414,41 @@ static int __saa7134_ir_start(void *priv)
 	if (ir->running)
 		return 0;
 
+	/* Moved here from saa7134_input_init1() because the latter
+	 * is not called on device resume */
+	switch (dev->board) {
+	case SAA7134_BOARD_MD2819:
+	case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
+	case SAA7134_BOARD_AVERMEDIA_305:
+	case SAA7134_BOARD_AVERMEDIA_307:
+	case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
+	case SAA7134_BOARD_AVERMEDIA_STUDIO_505:
+	case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
+	case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
+	case SAA7134_BOARD_AVERMEDIA_STUDIO_507UA:
+	case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
+	case SAA7134_BOARD_AVERMEDIA_M102:
+	case SAA7134_BOARD_AVERMEDIA_GO_007_FM_PLUS:
+		/* Without this we won't receive key up events */
+		saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
+		saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
+		break;
+	case SAA7134_BOARD_AVERMEDIA_777:
+	case SAA7134_BOARD_AVERMEDIA_A16AR:
+		/* Without this we won't receive key up events */
+		saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
+		saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
+		break;
+	case SAA7134_BOARD_AVERMEDIA_A16D:
+		/* Without this we won't receive key up events */
+		saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
+		saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
+		break;
+	case SAA7134_BOARD_GOTVIEW_7135:
+		saa_setb(SAA7134_GPIO_GPMODE1, 0x80);
+		break;
+	}
+
 	ir->running = true;
 	ir->active = false;
 
@@ -548,9 +583,7 @@ int saa7134_input_init1(struct saa7134_dev *dev)
 		mask_keycode = 0x0007C8;
 		mask_keydown = 0x000010;
 		polling      = 50; // ms
-		/* Set GPIO pin2 to high to enable the IR controller */
-		saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
-		saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
+		/* GPIO stuff moved to __saa7134_ir_start() */
 		break;
 	case SAA7134_BOARD_AVERMEDIA_M135A:
 		ir_codes     = RC_MAP_AVERMEDIA_M135A;
@@ -572,18 +605,14 @@ int saa7134_input_init1(struct saa7134_dev *dev)
 		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);
+		/* GPIO stuff moved to __saa7134_ir_start() */
 		break;
 	case SAA7134_BOARD_AVERMEDIA_A16D:
 		ir_codes     = RC_MAP_AVERMEDIA_A16D;
 		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);
+		/* GPIO stuff moved to __saa7134_ir_start() */
 		break;
 	case SAA7134_BOARD_KWORLD_TERMINATOR:
 		ir_codes     = RC_MAP_PIXELVIEW;
@@ -635,7 +664,7 @@ int saa7134_input_init1(struct saa7134_dev *dev)
 		mask_keycode = 0x0003CC;
 		mask_keydown = 0x000010;
 		polling	     = 5; /* ms */
-		saa_setb(SAA7134_GPIO_GPMODE1, 0x80);
+		/* GPIO stuff moved to __saa7134_ir_start() */
 		break;
 	case SAA7134_BOARD_VIDEOMATE_TV_PVR:
 	case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS: