304 lines
8.6 KiB
C
304 lines
8.6 KiB
C
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/*!
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* @文件名 logic_power.c
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*
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* @功能描述
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* 1.通过检测主机控制的FCD_EN信号,控制系统的上下电
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* 2.通过检测948的LVDS Lock信号,控制屏幕的显示与关闭
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* 3.通过硬件机制,保证系统可执行自断电操作,从而不需要进入stop模式
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*/
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#include "logic_public.h"
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#define PERIOD_CHECK_WAKEUP 10 //检测FCD_EN信号的周期,10ms
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#define PERIOD_CHECK_LVDS_LOCK 10 //检测LVDS lock信号的周期,10ms
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static eNotifyEvent g_BattStatus = EN_NOTIFY_VOLTAGE_NORMAL; //电源状态
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static bool g_bPowerDown = true; //false[已上电] true[已下电]
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static bool g_bWakeUp = false; //false[系统未唤醒] true[系统已唤醒]
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static bool bWakeUpStatusOld = false;
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static bool bLockStatusOld = false;
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extern task_t s_bist_check_task; //bist任务
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task_t s_logic_check_lvds; //周期检测LVDS lock信号的任务句柄
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task_t s_logic_check_wakeup; //周期检测Wakup信号的任务句柄(即主机FCD_EN信号)
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/*FUNCTION**********************************************************************
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*
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* Function Name : logic_power_up_step1
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* Description : 检测到FCD_EN信号时,先给948等外围器件 供电,以便与解串器实现信号LOCK
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*
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* 供电关系说明:
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* 1.FCD_EN信号->SW_3V3_EN[H]->SW_3V3[H]: AD上拉有了,器件3.3v供电有了,948,max25512,pmic供上电
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* 2.
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*
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*END**************************************************************************/
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static void logic_power_up_step1(void)
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{
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//1.检测到FCD_EN信号->SW_3V3_EN[H]->SW_3V3[H]: AD上拉有了,器件3.3v供电有了,948,max25512,pmic供上电
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//2.拉高PON_HOLD自锁接管电源
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fml_gpio_write(OUT_PON_HOLD,true);
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//3.拉高LDO_1V2_EN,使能1.2v电压输出,948有用到1.2v
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fml_gpio_write(OUT_LDO_1V2_EN,true);
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//4.拉高3V3_TFT_EN,使能TFT_VDD输出,给TDDI供电
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fml_gpio_write(OUT_3V3_TFT_EN,true);
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//5.使能948 LVDS输出
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fml_gpio_write(OUT_LVDS_PDB,true);
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//6.拉低TP_RST,将TDDI TP触摸复位
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fml_gpio_write(OUT_TP_RST,false);
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//7.拉低TFT_RST,将TDDI DP显示复位
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fml_gpio_write(OUT_TFT_RST,false);
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logWrite("logic_power_up_step1\r\n");
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : logic_power_up_step2
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* Description : 检测到LVDS Lock信号时,输出TFT相关电压,打开背光
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*
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*END**************************************************************************/
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void logic_power_up_step2(void)
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{
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//1.拉高TP_RST
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fml_gpio_write(OUT_TP_RST,true);
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//2.拉高TFT_RST
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fml_gpio_write(OUT_TFT_RST,true);
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//3.拉高TFT_SHLR,左右镜像控制
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fml_gpio_write(OUT_TFT_SHLR,true);
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//4.拉高TFT_SYBYB,TDDI退出Standby模式
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fml_gpio_write(OUT_TFT_SYBYB,true);
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//5.拉高TFT_DISP,使能显示
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fml_gpio_write(OUT_TFT_DISP,true);
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//6.拉低TFT_BIST,退出BIST测试模式
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fml_gpio_write(OUT_TFT_BIST,false);
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//7.拉高PMIC_EN,使能屏电压输出,具体输出还要写寄存器
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fml_gpio_write(OUT_PMIC_EN,true);
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//8.拉高BL_EN,使能MAX25512背光输出,具体输出还要写寄存器
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fml_gpio_write(OUT_BL_EN,true);
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//10.找到master i2c这路设备
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fml_tft_init();
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cola_delay_ms(10);//必须加延时,否则后面i2c写入会出现失败情况!
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//11.按TFT规格书,i2c配置pmic输出电压:PAVDD,NAVDD,VGH,VGL
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fml_pmic_init();
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//12.i2c配置max25512背光输出
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fml_max25512_init();
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//13.输出PWM背光控制(pwm输出放在最后,可避免闪屏!!)
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fml_pwm_init();
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fml_pwm_adjust(false);
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logWrite("logic_power_up_step2\r\n");
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : logic_power_down
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* Description : 屏端系统下电函数
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*
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*END**************************************************************************/
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static void logic_power_down(void)
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{
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//1.关闭pwm输出
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fml_pwm_change_duty(0);
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fml_pwm_deinit();
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//6.拉低TFT_SYBYB,TDDI进入Standby模式
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fml_gpio_write(OUT_TFT_SYBYB,false);
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cola_delay_ms(50);
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//5.拉低TFT_DISP,关闭显示
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fml_gpio_write(OUT_TFT_DISP,false);
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cola_delay_ms(16);
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//2.拉低BL_EN,关闭MAX25512背光输出
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fml_gpio_write(OUT_BL_EN,false);
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//3.拉低PMIC_EN,关闭PMIC给屏的相关供电
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fml_gpio_write(OUT_PMIC_EN,false);
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//4.拉低TFT_BIST,退出BIST测试模式
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fml_gpio_write(OUT_TFT_BIST,false);
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//7.拉低TFT_RST,复位DP
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fml_gpio_write(OUT_TFT_RST,false);
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//8.拉低TP_RST,复位TP
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fml_gpio_write(OUT_TP_RST,false);
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//9.关闭948 LVDS输出
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fml_gpio_write(OUT_LVDS_PDB,false);
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//10.拉低3V3_TFT_EN,关闭TFT_VDD输出,给TDDI断电
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fml_gpio_write(OUT_3V3_TFT_EN,false);
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//11.拉低LDO_1V2_EN,关闭1.2v电压输出
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fml_gpio_write(OUT_LDO_1V2_EN,false);
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//12.拉低PON_HOLD,MCU关闭整个系统电源,包括自身供电[但电源异常时不能关闭电源]
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if(g_BattStatus == EN_NOTIFY_VOLTAGE_NORMAL)
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fml_gpio_write(OUT_PON_HOLD,false);
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : logic_task_check_lvds_lock
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* Description : 周期检测948 LVDS Lock信号,控制TFT的显示与关闭
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*
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*END**************************************************************************/
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static void logic_task_check_lvds_lock(void *arg, uint32_t event)
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{
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(void)arg;
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(void)event;
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static int iDlyCnt = 0;
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if(g_bWakeUp == false)
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return;
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if(g_BattStatus != EN_NOTIFY_VOLTAGE_NORMAL)
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return;
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bool bLockStatus = fml_gpio_read(IN_LVDS_UNLOCK);
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if(bLockStatusOld != bLockStatus)
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{
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iDlyCnt = 10;
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#if 0
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if(bLockStatus)
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logWrite("detect bLockStatus = %d,signal match\r\n",bLockStatus);
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else
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logWrite("detect bLockStatus = %d,signal lost\r\n",bLockStatus);
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#endif
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bLockStatusOld = bLockStatus;
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}
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if(iDlyCnt > 0)
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{
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iDlyCnt--;
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if(0 == iDlyCnt)
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{
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if(bLockStatus)
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{//检测lvds锁信号生效
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if(g_bPowerDown)
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{
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g_bPowerDown = false;
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logic_power_up_step2();
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logWrite("first lock, power on tft\r\n");
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if(cola_get_ticker() > 15000)
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{//用于解决上电没有接lvds线,后面再接上不亮屏的情况
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logWrite("tft self make bk light on\r\n");
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fml_max25512_set_bklight_on(true);
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}
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}
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else
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{
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logWrite("lock signal match,enable backlight\r\n");
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fml_max25512_set_bklight_on(true);
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}
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}
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else
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{//检测lvds锁信号丢失
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//fml_max25512_set_bklight_on(false);
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//logWrite("lock signal lost,disable backlight\r\n");
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}
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}
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}
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : logic_task_check_wakeup_signal
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* Description : 周期检测主机给过来的FCD_EN信号,控制系统的上下电
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*
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*END**************************************************************************/
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static void logic_task_check_wakeup_signal(void *arg, uint32_t event)
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{
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(void)arg;
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(void)event;
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static int iDlyCnt = 0;
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bool bWakeUpStatus = fml_gpio_read(IN_WAKEUP);
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bool bEnable = false;
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if(bWakeUpStatusOld != bWakeUpStatus)
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{
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iDlyCnt = 10;
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bWakeUpStatusOld = bWakeUpStatus;
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}
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if(iDlyCnt > 0)
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{
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iDlyCnt--;
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if(0 == iDlyCnt)
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{
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bEnable = true;
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logWrite("detect fcd_en=%d:",bWakeUpStatus);
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}
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}
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if(event > 0)
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{
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if((event & EN_NOTIFY_VOLTAGE_LOW) == EN_NOTIFY_VOLTAGE_LOW)
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{
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bEnable = true;
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logWrite("detect bat low:");
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}
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if((event & EN_NOTIFY_VOLTAGE_HIGH) == EN_NOTIFY_VOLTAGE_HIGH)
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{
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bEnable = true;
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logWrite("detect bat high:");
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}
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if((event & EN_NOTIFY_VOLTAGE_NORMAL) == EN_NOTIFY_VOLTAGE_NORMAL)
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{
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bEnable = true;
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logWrite("detect bat normal:");
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}
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}
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if(bEnable)
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{
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if(g_bWakeUp == false)
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{//上电
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logWrite("power up\r\n");
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g_bWakeUp = true;
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bLockStatusOld = false;
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logic_power_up_step1();
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cola_timer_create(&s_logic_check_lvds, logic_task_check_lvds_lock, NULL);
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cola_timer_start(&s_logic_check_lvds, EN_COLA_TIMER_ALWAYS, PERIOD_CHECK_LVDS_LOCK);
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cola_set_event(&s_bist_check_task,EN_NOTIFY_SYS_POWER_UP);
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}
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else if(g_bWakeUp == true)
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{//下电
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logWrite("power down\r\n");
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cola_set_event(&s_bist_check_task,EN_NOTIFY_SYS_POWER_DOWN);
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cola_timer_stop(&s_logic_check_lvds);
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cola_timer_delete(&s_logic_check_lvds);
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g_bWakeUp = false;
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g_bPowerDown = true;
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logic_power_down();
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cola_delay_ms(200);
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}
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}
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}
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/*FUNCTION**********************************************************************
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*
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* Function Name : logic_power_init
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* Description : 初始化电源管理检测任务
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*
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*END**************************************************************************/
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void logic_power_init(void)
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{
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logWrite("getSoftwareVersion:%s\r\n",getSoftwareVersion());
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bWakeUpStatusOld = !fml_gpio_read(IN_WAKEUP);
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cola_timer_create(&s_logic_check_wakeup, logic_task_check_wakeup_signal, NULL);
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cola_timer_start(&s_logic_check_wakeup, EN_COLA_TIMER_ALWAYS, PERIOD_CHECK_WAKEUP);
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}
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