131 lines
2.7 KiB
C
Executable File
131 lines
2.7 KiB
C
Executable File
/*
|
|
* (C) Copyright 2007-2013
|
|
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
|
|
* Jerry Wang <wangflord@allwinnertech.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/key.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <sys_config.h>
|
|
#include <power/sunxi/pmu.h>
|
|
#include <fdt_support.h>
|
|
#include <asm/arch/ccmu.h>
|
|
#include <asm/arch/timer.h>
|
|
#include <sys_config_old.h>
|
|
|
|
|
|
__attribute__((section(".data")))
|
|
static int keyen_flag = 1;
|
|
|
|
|
|
int sunxi_key_init(void)
|
|
{
|
|
uint reg_val = 0;
|
|
|
|
sunxi_key_clock_open();
|
|
|
|
/*choose channel 0*/
|
|
reg_val = readl(GP_CS_EN);
|
|
reg_val |= 1;
|
|
writel(reg_val, GP_CS_EN);
|
|
|
|
/*choose continue work mode and enable ADC*/
|
|
reg_val = readl(GP_CTRL);
|
|
reg_val &= ~(1<<18);
|
|
reg_val |= ((1<<19) | (1<<16));
|
|
writel(reg_val, GP_CTRL);
|
|
|
|
/* disable all key irq */
|
|
writel(0, GP_DATA_INTC);
|
|
writel(1, GP_DATA_INTS);
|
|
|
|
script_parser_fetch("key_detect_en", "keyen_flag", &keyen_flag, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sunxi_key_exit(void)
|
|
{
|
|
writel(0, GP_CTRL);
|
|
/* disable all key irq */
|
|
writel(0, GP_DATA_INTC);
|
|
writel(0, GP_DATA_INTS);
|
|
|
|
sunxi_key_clock_close();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sunxi_key_read(void)
|
|
{
|
|
u32 ints;
|
|
int key = -1;
|
|
int vin;
|
|
|
|
if (!keyen_flag)
|
|
return -1;
|
|
|
|
ints = readl(GP_DATA_INTS);
|
|
/* clear the pending data */
|
|
writel(readl(GP_DATA_INTS)|(ints & 0x1), GP_DATA_INTS);
|
|
/* if there is already data pending, read it */
|
|
if (ints & GPADC0_DATA_PENDING) {
|
|
vin = readl(GP_CH0_DATA)*18/4095;
|
|
if (vin > 16)
|
|
key = -1;
|
|
else {
|
|
key = readl(GP_CH0_DATA)*63/4095;
|
|
printf("key pressed value=0x%x\n", key);
|
|
}
|
|
}
|
|
return key;
|
|
}
|
|
|
|
|
|
int do_key_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
u32 power_key = 0;
|
|
|
|
writel(1, GP_DATA_INTS);
|
|
|
|
printf(" press a key:\n");
|
|
while(!ctrlc())
|
|
{
|
|
sunxi_key_read();
|
|
power_key = axp_probe_key();
|
|
if(power_key > 0) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
key_test, 1, 0, do_key_test,
|
|
"Test the key value\n",
|
|
""
|
|
);
|
|
|