C++ (Cpp) standby_twi_init示例

示例#1

文件： standby_power.c 项目： Applezhu818/lichee_linux-3.0

/*
*********************************************************************************************************
*                           standby_power_init
*
* Description: init power for standby.
*
* Arguments  : none;
*
* Returns    : result;
*********************************************************************************************************
*/
__s32 standby_power_init(void)
{
    __u8 val, mask, reg_val;
    __s32   i;

	standby_twi_init(AXP_IICBUS);

    #if(AXP_WAKEUP & AXP_WAKEUP_KEY)
    /* enable pek long/short */
	twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN3, &reg_val);
	reg_val |= 0x03;
	twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN3, &reg_val);
    #endif

    #if(AXP_WAKEUP & AXP_WAKEUP_LOWBATT)
    /* enable low voltage warning */
	twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN4, &reg_val);
	reg_val |= 0x03;
	twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN4, &reg_val);
    /* clear pending */
	reg_val = 0x03;
	twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQ4, &reg_val);
    #endif

    return 0;
}

示例#2

void standby_enter_low(void)
{
    /*sdram self-refresh*/
    aw_writel(aw_readl(SW_DRAM_SDR_CTL_REG)|SDR_ENTER_SELFRFH,SW_DRAM_SDR_CTL_REG);
    while(!(aw_readl(SW_DRAM_SDR_CTL_REG)&SDR_SELFRFH_STATUS));

    /*gate off sdram*/
    aw_writel(aw_readl(SW_CCM_SDRAM_PLL_REG)&~SDR_CLOCK_GATE_EN,SW_CCM_SDRAM_PLL_REG);

    /*disable VE pll*/
    aw_writel(aw_readl(SW_CCM_CORE_VE_PLL_REG)&~(1<<15),SW_CCM_CORE_VE_PLL_REG);

    /*COREPLL to 24M*/
    aw_writel((aw_readl(SW_CCM_AHB_APB_CFG_REG)&BUS_CCLK_MASK)|BUS_CCLK_24M,SW_CCM_AHB_APB_CFG_REG);
    standby_delay(100);

    /*down core power*/
#if EN_POWER_D
    standby_twi_init(0);
    twi_byte_rw(TWI_OP_RD,0x34,0x23,&data[0]);
    data[2] = 0x0C;  	// 1V
    twi_byte_rw(TWI_OP_WR,0x34,0x23,&data[2]);
#endif

    /*COREPLL to 32K*/
    aw_writel((aw_readl(SW_CCM_AHB_APB_CFG_REG)&BUS_CCLK_MASK)|BUS_CCLK_32K,SW_CCM_AHB_APB_CFG_REG);
    standby_delay(50);

    /*disable HOSC and LDO*/
    aw_writel(aw_readl(SW_CCM_AUDIO_HOSC_PLL_REG)&~(1|(1<<15)),SW_CCM_AUDIO_HOSC_PLL_REG);

#if MODIFY_AHB_APB_EN
    aw_writel((1<<13)|(1<<16)|(1),SW_CCM_AHB_GATE_REG);
    aw_writel((1<<5)|1,SW_CCM_APB_GATE_REG);
#endif

}

示例#3

文件： standby_power.c 项目： pocketbook/U7

/*
*********************************************************************************************************
*                           standby_power_init
*
* Description: init power for standby.
*
* Arguments  : none;
*
* Returns    : result;
*********************************************************************************************************
*/
__s32 standby_power_init(__u32 wakeup_src)
{
    __u8	reg_val;

    standby_twi_init(AXP_IICBUS);

    if(wakeup_src & AXP_WAKEUP_KEY) {
        /* enable pek long/short */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN3, &reg_val);
        reg_val |= 0x03;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN3, &reg_val);
    }

    if(wakeup_src & AXP_WAKEUP_LONG_KEY) {
        /* enable pek long */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN3, &reg_val);
        reg_val |= 0x01;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN3, &reg_val);
        /*pek long period setting: 1s*/
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_PEK, &reg_val);
        reg_val &= 0xcf;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_PEK, &reg_val);
    }

    if(wakeup_src & AXP_WAKEUP_SHORT_KEY) {
        /* enable pek short */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN3, &reg_val);
        reg_val |= 0x02;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN3, &reg_val);
    }

    if(wakeup_src & AXP_WAKEUP_DESCEND) {
        /* enable pek desend trigger */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN5, &reg_val);
        reg_val |= 0x20;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN5, &reg_val);
    }

    if(wakeup_src & AXP_WAKEUP_ASCEND) {
        /* enable pek ascend trigger */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN5, &reg_val);
        reg_val |= 0x40;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN5, &reg_val);
    }

    if(wakeup_src & AXP_WAKEUP_LOWBATT) {
        /* enable low voltage warning */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN4, &reg_val);
        reg_val |= 0x03;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN4, &reg_val);
        /* clear pending */
        reg_val |= 0x03;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQ4, &reg_val);
    }

    if(wakeup_src & AXP_WAKEUP_USB) {
        /* enable usb plug-in / plug-out */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN1, &reg_val);
        reg_val |= 0x03<<2;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN1, &reg_val);
    }

    if(wakeup_src & AXP_WAKEUP_AC) {
        /* enable ac plug-in / plug-out */
        twi_byte_rw(TWI_OP_RD, AXP_ADDR,AXP20_IRQEN1, &reg_val);
        reg_val |= 0x03<<5;
        twi_byte_rw(TWI_OP_WR, AXP_ADDR,AXP20_IRQEN1, &reg_val);
    }

    return 0;
}