plat-omap: gpio: Configure gpio padconf wakeups on late_init()

Configuring in the idle path is too slow.
Possible revisit, if padconf changes past late_init() idle will miss this
but suspend will enable it properly.

This wakeup code got lost in the DSPBRIDGE commit, putting back in.

Change-Id: I75633ae625e60741621e01c2386fdc3a7574b18e
Signed-off-by: Mike Chan <mike@android.com>

arch/arm/plat-omap/gpio.c

@@ -1712,6 +1712,29 @@ static int __init omap3_gpio_pads_init(void)
 		}
 	}
 	gpio_pads[gpio_amt].gpio = -1;
+
+	/* Configure gpio pad wakeups on late init */
+	for (i = 0; i < gpio_bank_count; i++) {
+		struct gpio_bank *bank = &gpio_bank[i];
+		if (bank->method == METHOD_GPIO_24XX) {
+			int j;
+			for (j = 0; j < 32; j++) {
+				int offset = gpio_pad_map[j + i * 32];
+				u16 v;
+
+				if (!offset)
+					continue;
+
+				v = omap_ctrl_readw(offset);
+				if (bank->suspend_wakeup & (1 << j))
+					v |= OMAP3_PADCONF_WAKEUPENABLE0;
+				else
+					v &= ~OMAP3_PADCONF_WAKEUPENABLE0;
+				omap_ctrl_writew(v, offset);
+			}
+		}
+	}
+
 	return 0;
 }
 late_initcall(omap3_gpio_pads_init);