92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
/*
|
|
* (C) Copyright 2016
|
|
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
|
|
* zhouhuacai <zhouhuacai@allwinnertech.com>
|
|
*
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <arch/physical_key.h>
|
|
#include <arch/clock.h>
|
|
#include <arch/axp.h>
|
|
|
|
__attribute__((section(".data")))
|
|
static uint32_t keyen_flag = 1;
|
|
|
|
__weak int sunxi_clock_init_key(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int sunxi_key_init(void)
|
|
{
|
|
struct sunxi_lradc *sunxi_key_base = (struct sunxi_lradc *)SUNXI_KEYADC_BASE;
|
|
uint reg_val = 0;
|
|
|
|
sunxi_clock_init_key();
|
|
|
|
reg_val = sunxi_key_base->ctrl;
|
|
reg_val &= ~((7 << 1) | (0xffU << 24));
|
|
reg_val |= LRADC_HOLD_EN;
|
|
reg_val |= LRADC_EN;
|
|
sunxi_key_base->ctrl = reg_val;
|
|
|
|
/* disable all key irq */
|
|
sunxi_key_base->intc = 0;
|
|
sunxi_key_base->ints = 0x1f1f;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sunxi_key_read(void)
|
|
{
|
|
u32 ints;
|
|
int key = -1;
|
|
struct sunxi_lradc *sunxi_key_base = (struct sunxi_lradc *)SUNXI_LRADC_BASE;
|
|
|
|
if (!keyen_flag) {
|
|
return -1;
|
|
}
|
|
|
|
ints = sunxi_key_base->ints;
|
|
/* clear the pending data */
|
|
sunxi_key_base->ints |= (ints & 0x1f);
|
|
|
|
/* if there is already data pending,
|
|
read it */
|
|
mdelay(10);
|
|
if (ints & ADC0_KEYDOWN_PENDING) {
|
|
if (ints & ADC0_DATA_PENDING) {
|
|
key = sunxi_key_base->data0 & 0x3f;
|
|
}
|
|
} else if (ints & ADC0_DATA_PENDING) {
|
|
key = sunxi_key_base->data0 & 0x3f;
|
|
}
|
|
|
|
if (key > 0) {
|
|
printf("key pressed value=0x%x\n", key);
|
|
}
|
|
|
|
return key;
|
|
}
|
|
|
|
int check_update_key(u16 *key_input)
|
|
{
|
|
int power_key_cnt = 0;
|
|
u32 time_tick = get_sys_ticks();
|
|
*key_input = sunxi_key_read();
|
|
while (sunxi_key_read() > 0) {
|
|
if (probe_power_key() > 0)
|
|
power_key_cnt++;
|
|
if (power_key_cnt >= 3)
|
|
return -1;
|
|
if ((get_sys_ticks() - time_tick) > 3000)
|
|
break;
|
|
}
|
|
if ((!power_key_cnt) && (get_power_source() != AXP_BOOT_SOURCE_BUTTON))
|
|
*key_input = 0;
|
|
return 0;
|
|
}
|
|
|