diff options
Diffstat (limited to 'board/freescale/common/recovery_keypad.c')
-rw-r--r-- | board/freescale/common/recovery_keypad.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/board/freescale/common/recovery_keypad.c b/board/freescale/common/recovery_keypad.c new file mode 100644 index 0000000000..fb15626b03 --- /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 |