blob: a57a2f8ecdc4fd2fed61cdcb4b3589372a01e2e5 [file] [log] [blame]
vijay kumarca1672a2015-04-09 16:45:40 +05301/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 * * Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above
9 * copyright notice, this list of conditions and the following
10 * disclaimer in the documentation and/or other materials provided
11 * with the distribution.
12 * * Neither the name of The Linux Foundation nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27*/
28
29#include <reg.h>
30#include <platform/gpio.h>
31#include <platform/iomap.h>
32
33/* GPIO that controls the button
34 * for FASTBOOT.
35 */
36#define FASTBOOT_KEY_GPIO_ID 37
37
38/*
39 * Returns fastboot button state.
40 * Returns 0 if button is not pressed, 1 when pressed.
41 */
42int get_fastboot_key_state(void)
43{
44 int ret;
45
46 gpio_tlmm_config(FASTBOOT_KEY_GPIO_ID, 0, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA, GPIO_ENABLE);
47
48 ret = gpio_get_state(FASTBOOT_KEY_GPIO_ID);
49
50 return ret;
51}
52
53/*
54* Return 1 to trigger to fastboot
55*/
56int fastboot_trigger(void)
57{
58 int ret;
59
60 ret = get_fastboot_key_state();
61
62 return (ret);
63}