unsigned int g9tv_ref_wakeup(unsigned int flags)
{
int delay_cnt = 0;
int power_status = 1;
int prev_status;
int battery_voltage;
int ret = FLAG_WAKEUP_PWRKEY;
int low_bat_cnt = 0;
#ifdef CONFIG_IR_REMOTE_WAKEUP
//backup the remote config (on arm)
backup_remote_register();
//set the ir_remote to 32k mode at ARC
init_custom_trigger();
#endif
#ifdef CONFIG_SARADC_WAKEUP_FOR_ARC
saradc_init();
adc_start_sample(0);
#endif
do {
if ((flags == 0x87654321) && (!power_status)) { // suspend from uboot
ret = FLAG_WAKEUP_PWROFF;
exit_reason = -1;
break;
}
#ifdef CONFIG_IR_REMOTE_WAKEUP
if(readl(P_AO_RTI_STATUS_REG2) == 0x4853ffff){
break;
}
if(remote_detect_key()){
exit_reason = 6;
break;
}
#endif
#ifdef CONFIG_SARADC_WAKEUP_FOR_ARC
if (is_adc_finished()) {
if(1 == adc_detect_key()){
exit_reason = 6;
break;
}
adc_start_sample(0);
}
#endif
if((readl(P_AO_RTC_ADDR1) >> 12) & 0x1) {
exit_reason = 7;
ret = FLAG_WAKEUP_ALARM;
break;
}
#ifdef CONFIG_BT_WAKEUP
if(readl(P_PREG_PAD_GPIO0_I)&(0x1<<16)){
exit_reason = 8;
ret = FLAG_WAKEUP_BT;
break;
}
#endif
#ifdef CONFIG_WIFI_WAKEUP
if ((flags != 0x87654321) &&(readl(P_AO_GPIO_O_EN_N)&(0x1<<22)))
if(readl(P_PREG_PAD_GPIO0_I)&(0x1<<21)){
exit_reason = 9;
ret = FLAG_WAKEUP_WIFI;
break;
}
#endif
} while (!(readl(0xc8100088) & (1<<8))); // power key
writel(1<<8,0xc810008c);
writel(gpio_sel0, 0xc8100084);
writel(gpio_mask,0xc8100080);
#ifdef CONFIG_IR_REMOTE_WAKEUP
resume_remote_register();
#endif
return ret;
}
void enter_power_down()
{
int i;
unsigned v1,v2,v;
unsigned rtc_ctrl;
unsigned power_key;
//*******************************************
//* power down flow
//*******************************************
f_serial_puts("\n");
wait_uart_empty();
// disable jtag
setbits_le32(P_AO_RTI_PIN_MUX_REG, 1<<13);
clrbits_le32(P_AO_RTI_PIN_MUX_REG, 1<<14);
// turn off mali clock
clrbits_le32(P_HHI_MALI_CLK_CNTL, 1 << 8);
// disable all memory accesses.
disable_mmc_req();
//save registers for clk and ddr
store_restore_plls(1);
//mmc enter sleep
mmc_sleep();
// delay_ms(20);
// save ddr power
APB_Wr(MMC_PHY_CTRL, APB_Rd(MMC_PHY_CTRL)|(1<<0)|(1<<8)|(1<<13));
APB_Wr(PCTL_PHYCR_ADDR, APB_Rd(PCTL_PHYCR_ADDR)|(1<<6));
APB_Wr(PCTL_DLLCR9_ADDR, APB_Rd(PCTL_DLLCR9_ADDR)|(1<<31));
// delay_ms(20);
// power down DDR
writel(readl(P_HHI_DDR_PLL_CNTL)|(1<<15),P_HHI_DDR_PLL_CNTL);
// enable retention
enable_retention();
writel(0,P_AO_RTI_STATUS_REG1);
// reset A9
// setbits_le32(P_A9_CFG2, 7<<16);
clrbits_le32(P_HHI_SYS_CPU_CLK_CNTL, 1<<4); // disable APB_CLK
clrbits_le32(P_HHI_SYS_CPU_CLK_CNTL, 1<<5); // disable AT_CLK
setbits_le32(P_HHI_SYS_CPU_CLK_CNTL,1<<19);
udelay(10);
// enable iso ee for A9
writel(readl(P_AO_RTI_PWR_CNTL_REG0)&(~(1<<4)),P_AO_RTI_PWR_CNTL_REG0);
udelay(1000);
#ifdef POWER_OFF_HDMI_VCC
reg7_off();
#endif
#ifdef POWER_OFF_AVDD33
reg5_off();
#endif
#ifdef POWER_OFF_EE
//iso EE from AO
//comment isolate EE. otherwise cannot detect power key.
// writel(readl(P_AO_RTI_PWR_CNTL_REG0)&(~(1<<0)),P_AO_RTI_PWR_CNTL_REG0);
writel(readl(P_AO_RTI_PWR_CNTL_REG0)&(~(1<<2)),P_AO_RTI_PWR_CNTL_REG0);
writel(readl(P_AO_RTI_PWR_CNTL_REG0)&(~(1<<3)),P_AO_RTI_PWR_CNTL_REG0);
//?? Gate off clk81 to EE domain
writel(readl(P_AO_RTI_GEN_CNTL_REG0)&(~(1<<12)),P_AO_RTI_GEN_CNTL_REG0);
//-------------------------------
//turn off EE voltage
//v = readl(0xC8100024);
//v &= ~(1<<9);
//v &= ~(1<<25);
//writel(v,0xC8100024);
#else
// ee use 32k
writel(readl(P_HHI_MPEG_CLK_CNTL)|(1<<9),P_HHI_MPEG_CLK_CNTL);
#endif
// change RTC filter for 32k
rtc_ctrl = readl(0xC810074c);
//writel(0x00800000,0xC810074c);
writel(0,0xC810074c);
// switch to 32k
writel(readl(P_AO_RTI_PWR_CNTL_REG0)|(1<<8),P_AO_RTI_PWR_CNTL_REG0);
udelay(100);
#ifdef POWER_OFF_VDDIO
vddio_off();
#endif
#ifdef POWER_OFF_AVDD25
reg6_off();
#endif
#ifdef POWER_OFF_VCC
power_off_VCC(0);
#endif
udelay(100);
#if (defined(POWER_DOWN_VCC12) || defined(POWER_DOWN_DDR))
switch_voltage(1);
#endif
#ifdef POWER_DOWN_DDR
powerdown_ddr();
#endif
#ifdef POWER_DOWN_VCC12
powerdown_vcc12();
#endif
// gate off REMOTE, UART
//writel(readl(P_AO_RTI_GEN_CNTL_REG0)&(~(0xF)),P_AO_RTI_GEN_CNTL_REG0);
// wait key
#if 1
//backup the remote config (on arm)
backup_remote_register();
//set the ir_remote to 32k mode at ARC
init_custom_trigger();
//set the detect gpio
//setbits_le32(P_AO_GPIO_O_EN_N,(1<<3));
while(1)
{
//detect remote key
power_key=readl(P_AO_IR_DEC_FRAME);
if(power_key==0xf50a7748) break;
//detect IO key
/*power_key=readl(P_AO_GPIO_I);
power_key=power_key&(1<<3);
if(!power_key)
break;
*/
#ifdef RTC_AUTO_WAKE_UP
power_key = readl(0xc8100744);
if((power_key&8) != 0) break;
#endif
}
#elif 1
power_key = readl(0Xc8100744);
while (((power_key&4) != 0)&&((power_key&8) == 0))
{
power_key = readl(0Xc8100744);
}
#else
for(i=0;i<64;i++)
{
udelay(1000);
//udelay(1000);
}
#endif
// gate on REMOTE, I2C s/m, UART
//writel(readl(P_AO_RTI_GEN_CNTL_REG0)|0xF, P_AO_RTI_GEN_CNTL_REG0);
udelay(10);
#ifdef POWER_DOWN_DDR
powerup_ddr();
#endif
#ifdef POWER_DOWN_VCC12
powerup_vcc12();
#endif
#if (defined(POWER_DOWN_VCC12) || defined(POWER_DOWN_DDR))
switch_voltage(0);
#endif
#ifdef POWER_OFF_VCC
power_off_VCC(1);
#endif
#ifdef POWER_OFF_AVDD25
reg6_on();
#endif
#ifdef POWER_OFF_VDDIO
vddio_on();
#endif
udelay(100);
// switch to clk81
writel(readl(P_AO_RTI_PWR_CNTL_REG0)&(~(0x1<<8)),P_AO_RTI_PWR_CNTL_REG0);
udelay(100);
// restore RTC filter
writel(rtc_ctrl,0xC810074c);
// set AO interrupt mask
writel(0xFFFF,P_AO_IRQ_STAT_CLR);
#ifdef POWER_OFF_EE
//turn on EE voltage
//v = readl(0xC8100024);
//v &= ~(1<<9);
//v |= (1<<25);
//writel(v,0xC8100024);
//delay_ms(200);
// un-iso AO domain from EE bit0=signals, bit1=reset, bit2=irq, bit3=test_mode
writel(readl(P_AO_RTI_PWR_CNTL_REG0)|(0xD<<0),P_AO_RTI_PWR_CNTL_REG0);
//un isolate the reset in the EE
writel(readl(P_AO_RTI_PWR_CNTL_REG0)|(0x1<<5),P_AO_RTI_PWR_CNTL_REG0);
writel(readl(P_AO_RTI_PWR_CNTL_REG0)|(0x1<<5)|(1<<3)|(1<<2)|(1<<1)|(1<<0), \
P_AO_RTI_PWR_CNTL_REG0);
#else
// ee go back to clk81
writel(readl(P_HHI_MPEG_CLK_CNTL)&(~(0x1<<9)),P_HHI_MPEG_CLK_CNTL);
#endif
#ifdef POWER_OFF_AVDD33
reg5_on();
#endif
#ifdef POWER_OFF_HDMI_VCC
reg7_on();
#endif
store_restore_plls(0);
init_ddr_pll();
udelay(1000);
uart_reset();
reset_mmc();
// initialize mmc and put it to sleep
init_pctl();
mmc_sleep();
// disable retention
disable_retention();
// Next, we wake up
mmc_wakeup();
// Next, we enable all requests
enable_mmc_req();
// f_serial_puts("restart arm...\n");
//0. make sure a9 reset
setbits_le32(P_A9_CFG2,1<<17); // release APB reset
udelay(1000);
setbits_le32(P_A9_CFG2,1<<16); // release AXI reset
udelay(1000);
setbits_le32(P_A9_CFG2,1<<18); // release A9DBG reset
udelay(1000);
setbits_le32(P_HHI_SYS_CPU_CLK_CNTL,1<<19);
udelay(1000);
//1. write flag
if (power_key&8)
writel(0xabcd1234,P_AO_RTI_STATUS_REG2);
else
writel(0x1234abcd,P_AO_RTI_STATUS_REG2);
//2. remap AHB SRAM
writel(3,P_AO_REMAP_REG0);
writel(2,P_AHB_ARBDEC_REG);
//3. turn off romboot clock
writel(readl(P_HHI_GCLK_MPEG1)&0x7fffffff,P_HHI_GCLK_MPEG1);
//4. Release ISO for A9 domain.
setbits_le32(P_AO_RTI_PWR_CNTL_REG0,1<<4);
udelay(1000);
writel( (0 << 9) | // select xtal as clock source
(0 << 0) ,
P_HHI_MALI_CLK_CNTL);
delay_ms(1);
setbits_le32(P_HHI_SYS_CPU_CLK_CNTL, (1<<14)|(1<<15)); // soft reset
udelay(10);
clrbits_le32(P_HHI_SYS_CPU_CLK_CNTL, (1<<14)|(1<<15)); // soft reset
udelay(1000);
//reset A9
writel(0xF,P_RESET4_REGISTER);// -- reset arm.ww
writel(1<<14,P_RESET2_REGISTER);// -- reset arm.mali
udelay(1000);
clrbits_le32(P_A9_CFG2,1<<17); // release APB reset
udelay(1000);
clrbits_le32(P_A9_CFG2,1<<16); // release AXI reset
udelay(1000);
clrbits_le32(P_A9_CFG2,1<<18); // release A9DBG reset
udelay(1000);
setbits_le32(P_HHI_SYS_CPU_CLK_CNTL, 1<<4); // enable APB_CLK
udelay(10);
clrbits_le32(P_HHI_SYS_CPU_CLK_CNTL,1<<19); // release A9 reset
udelay(1000);
//reset the IR REMOTE
resume_remote_register();
// delay_1s();
// delay_1s();
// delay_1s();
}