void keypress_test(void)
{
/*following is test code to test ADC & key pad*/
int i;
int count = sizeof(g_key_K1_info)/sizeof(struct adckey_info);
int nKeyVal = 0;
int nCnt = 0;
printf("waiting for keypress test..\npress key \'sw3\' 3 times please...\n");
saradc_enable();
while(nCnt < 3)
{
udelay(KEY_DELAY_US);
nKeyVal = get_adc_sample(4);
if(nKeyVal > 1000)
continue;
for(i = 0; i < count; i++){
int v = g_key_K1_info[i].value;
if(nKeyVal >= v && nKeyVal <= (v + g_key_K1_info[i].tolerance)){
printf("key:%s pressed.\n",g_key_K1_info[i].key);
break;
}
}
if(i >= count)
printf("unknown key pressed. keyvalue=%d\n",nKeyVal);
nCnt++;
for(i = 0; i < 100; i++)
udelay(KEY_DELAY_US);
}
saradc_disable();
}
/*following is test code to test ADC & key pad*/
static int do_adc(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if(argc > 2)
goto usage;
u32 nDelay = 0xffff;
int nKeyVal = 0;
int nCnt = 0;
char *endp;
int nMaxCnt;
int adc_chan = 0; //m8 adc channel 0;m6 adc channel 4
if(2 == argc)
nMaxCnt = simple_strtoul(argv[1], &endp, 10);
else
nMaxCnt = 10;
saradc_enable();
while(nCnt < nMaxCnt)
{
udelay(nDelay);
nKeyVal = get_adc_sample(adc_chan);
if(nKeyVal > 1021)
continue;
printf("SARADC CH-4 Get key : %d [%d]\n", nKeyVal,(100*nKeyVal)/1024);
nCnt++;
}
saradc_disable();
return 0;
usage:
return cmd_usage(cmdtp);
}
static unsigned int detect_key(unsigned int suspend_from)
{
int exit_reason = 0;
unsigned int time_out = readl(AO_DEBUG_REG2);
unsigned time_out_ms = time_out*100;
unsigned char adc_key_cnt = 0;
unsigned *irq = (unsigned *)WAKEUP_SRC_IRQ_ADDR_BASE;
/* unsigned *wakeup_en = (unsigned *)SECURE_TASK_RESPONSE_WAKEUP_EN; */
/* start timer and enable adc*/
reset_ao_timera();
saradc_enable();
/* setup wakeup resources*/
/*auto suspend: timerA 10ms resolution*/
if (time_out_ms != 0)
wakeup_timer_setup();
saradc_enable();
reset_ao_timera();
init_remote();
#ifdef CONFIG_CEC_WAKEUP
if (hdmi_cec_func_config & 0x1) {
remote_cec_hw_reset();
cec_node_init();
}
#endif
/* *wakeup_en = 1;*/
do {
#ifdef CONFIG_CEC_WAKEUP
if (irq[IRQ_AO_CEC] == IRQ_AO_CEC_NUM) {
irq[IRQ_AO_CEC] = 0xFFFFFFFF;
// if (suspend_from == SYS_POWEROFF)
// continue;
if (cec_msg.log_addr) {
if (hdmi_cec_func_config & 0x1) {
cec_handler();
if (cec_msg.cec_power == 0x1) {
/*cec power key*/
exit_reason = CEC_WAKEUP;
break;
}
}
} else if (hdmi_cec_func_config & 0x1)
cec_node_init();
}
#endif
if (irq[IRQ_TIMERA] == IRQ_TIMERA_NUM) {
irq[IRQ_TIMERA] = 0xFFFFFFFF;
/*uart_puts("timera ...\n");*/
if (time_out_ms != 0)
time_out_ms--;
if (time_out_ms == 0) {
wakeup_timer_clear();
exit_reason = AUTO_WAKEUP;
}
}
if (irq[IRQ_AO_TIMERA] == IRQ_AO_TIMERA_NUM) {
irq[IRQ_AO_TIMERA] = 0xFFFFFFFF;
if (check_adc_key_resume()) {
adc_key_cnt++;
/*using variable 'adc_key_cnt' to eliminate the dithering of the key*/
if (2 == adc_key_cnt)
exit_reason = POWER_KEY_WAKEUP;
} else {
adc_key_cnt = 0;
}
}
if (irq[IRQ_AO_IR_DEC] == IRQ_AO_IR_DEC_NUM) {
irq[IRQ_AO_IR_DEC] = 0xFFFFFFFF;
if (remote_detect_key())
exit_reason = REMOTE_WAKEUP;
}
if (irq[IRQ_ETH_PHY] == IRQ_ETH_PHY_NUM) {
irq[IRQ_ETH_PHY] = 0xFFFFFFFF;
exit_reason = ETH_PHY_WAKEUP;
}
if (exit_reason)
break;
else
asm volatile("wfi");
} while (1);
restore_ao_timer();
saradc_disable();
return exit_reason;
}