From 2c840c82b3558267650b98735790ac7151644ae1 Mon Sep 17 00:00:00 2001
From: Ye Li <ye.li@nxp.com>
Date: Tue, 5 Jun 2018 01:34:41 -0700
Subject: MLK-18591-3 android: Add FSL android fastboot support

Porting the FSL android fastboot features from imx u-boot v2017.03 to
support all SoCs: imx6/imx7/imx7ulp/imx8/imx8m

Signed-off-by: Ye Li <ye.li@nxp.com>
---
 board/freescale/common/recovery_keypad.c | 60 ++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 board/freescale/common/recovery_keypad.c

(limited to 'board/freescale/common/recovery_keypad.c')

diff --git a/board/freescale/common/recovery_keypad.c b/board/freescale/common/recovery_keypad.c
new file mode 100644
index 00000000000..fb15626b030
--- /dev/null
+++ b/board/freescale/common/recovery_keypad.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2010-2016 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2017 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <malloc.h>
+#include <recovery.h>
+#ifdef CONFIG_MXC_KPD
+#include <mxc_keyb.h>
+#endif
+#include <asm/mach-imx/boot_mode.h>
+
+#ifdef CONFIG_MXC_KPD
+#define PRESSED_VOL_DOWN	0x01
+#define PRESSED_POWER	    0x02
+#define RECOVERY_KEY_MASK (PRESSED_VOL_DOWN | PRESSED_POWER)
+
+inline int test_key(int value, struct kpp_key_info *ki)
+{
+	return (ki->val == value) && (ki->evt == KDepress);
+}
+
+int is_recovery_keypad_pressing(void)
+{
+	struct kpp_key_info *key_info = NULL;
+	int state = 0, keys, i;
+
+	int ret = 0;
+
+	mxc_kpp_init();
+	/* due to glitch suppression circuit,
+	   wait sometime to let all keys scanned. */
+	udelay(1000);
+	keys = mxc_kpp_getc(&key_info);
+
+	printf("Detecting VOL_DOWN+POWER key for recovery(%d:%d) ...\n",
+		keys, keys ? key_info->val : 0);
+	if (keys > 1) {
+		for (i = 0; i < keys; i++) {
+			if (test_key(CONFIG_POWER_KEY, &key_info[i]))
+				state |= PRESSED_POWER;
+			else if (test_key(CONFIG_VOL_DOWN_KEY, &key_info[i]))
+				state |= PRESSED_VOL_DOWN;
+		}
+	}
+	if ((state & RECOVERY_KEY_MASK) == RECOVERY_KEY_MASK)
+		ret = 1;
+	if (key_info)
+		free(key_info);
+	return ret;
+}
+#else
+/* If not using mxc keypad, currently we will detect power key on board */
+int is_recovery_keypad_pressing(void)
+{
+	return 0;
+}
+#endif
-- 
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