M7350/bootable/bootloader/lk/target/mdm9615/keypad.c
2024-09-09 08:52:07 +00:00

51 lines
2.1 KiB
C

/*
* Copyright (c) 2011, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of The Linux Foundation nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <reg.h>
#include <platform/gpio.h>
#include <platform/iomap.h>
/* GPIO that controls the Dip Switch
* for FASTBOOT.
*/
#define DIP_SWITCH_GPIO 49
/*
* Fake keypad for 9x15
* Returns 0 if dip switch is off, 1 if on
*/
int fake_key_get_state(void)
{
int ret;
/* GPIO 49 connects to Boot Config5 */
gpio_tlmm_config(DIP_SWITCH_GPIO, 0, GPIO_OUTPUT, GPIO_PULL_DOWN,
GPIO_2MA, GPIO_ENABLE);
ret = readl(GPIO_IN_OUT_ADDR(DIP_SWITCH_GPIO));
return ret;
}