04.“battery_thread“线程

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structmtk_batterygm; voidmtk_battery_init(structplatform_device*dev) { gm.log_level=BM_DAEMON_DEFAULT_LOG_LEVEL; gm.d_log_level=BM_DAEMON_DEFAULT_LOG_LEVEL; ...... init_waitqueue_head(&gm.wait_que);//wait_queue_head_twait_que; ...... gm.gdev=get_gauge_by_name("gauge"); fg_custom_init_from_dts(dev);//kernel-4.14/arch/arm64/boot/dts/mediatek/bat_setting/tb8168_battery_prop_ext.dtsi ...... kthread_run(battery_update_routine,NULL,"battery_thread"); fg_drv_thread_hrtimer_init(); alarm_init(&gm.tracking_timer,ALARM_BOOTTIME,tracking_timer_callback); alarm_init(&gm.one_percent_timer,ALARM_BOOTTIME,one_percent_timer_callback); mtk_power_misc_init(dev);//这又开了一个"power_misc_thread"线程，处理异常状态(温度过高，电量过低)(这很重要，下次分解)

->kthread_run(power_misc_routine_thread, &sdc, "power_misc_thread"); ...... }

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intbattery_update_routine(void*x) { battery_update_psd(&battery_main); while(1){ wait_event(gm.wait_que,(gm.fg_update_flag>0)||(gm.tracking_cb_flag>0)||(gm.onepercent_cb_flag>0)); if(gm.fg_update_flag>0){ gm.fg_update_flag=0; fg_drv_update_hw_status(); } if(gm.tracking_cb_flag>0){ bm_err("%swakebytracking_cb_flag:%d\n",__func__,gm.tracking_cb_flag); gm.tracking_cb_flag=0; wakeup_fg_algo(FG_INTR_FG_TIME); } if(gm.onepercent_cb_flag>0){ bm_err("%swakebyonepercent_cb_flag:%d\n",__func__,gm.onepercent_cb_flag); nbsp;    gm.onepercent_cb_flag = 0;                         wakeup_fg_algo_cmd(FG_INTR_FG_TIME, 0, 1);                 }                 if (gm.fix_coverity == 1)                         return 0;         } } void fg_update_routine_wakeup(void) {     gm.fg_update_flag = 1;     wake_up(&gm.wait_que); } enum hrtimer_restart fg_drv_thread_hrtimer_func(struct hrtimer *timer) {     fg_update_routine_wakeup();     return HRTIMER_NORESTART; } void fg_drv_thread_hrtimer_init(void) {     ktime_t ktime = ktime_set(10, 0);  //10s     hrtimer_init(&gm.fg_hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);     gm.fg_hrtimer.function = fg_drv_thread_hrtimer_func;     hrtimer_start(&gm.fg_hrtimer, ktime, HRTIMER_MODE_REL); }

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/* ============================================================ */ /* periodic */ /* ============================================================ */ void fg_drv_update_hw_status(void) {     static bool fg_current_state;     signed int chr_vol;     int fg_current, fg_coulomb, bat_vol;     int plugout_status, tmp, bat_plugout_time;     int fg_current_iavg;     bool valid = false;     static unsigned int cnt;     ktime_t ktime = ktime_set(60, 0);     bm_debug("[%s]=>\n", __func__);     if (gauge_get_hw_version() >= GAUGE_HW_V1000 &&     gauge_get_hw_version() < GAUGE_HW_V2000)         fg_int_event(gm.gdev, EVB_PERIODIC_CHECK);     fg_update_sw_iavg();     gauge_dev_get_boot_battery_plug_out_status(         gm.gdev, &plugout_status, &bat_plugout_time);     fg_current_state = gauge_get_current(&fg_current);     fg_coulomb = gauge_get_coulomb();     bat_vol = pmic_get_battery_voltage();     chr_vol = battery_get_vbus();     tmp = force_get_tbat(true);     bm_err("lbat %d %d %d %d\n",         gm.sw_low_battery_ht_en,         gm.sw_low_battery_ht_threshold,         gm.sw_low_battery_lt_en,         gm.sw_low_battery_lt_threshold);     bm_err("car[%d,%ld,%ld,%ld,%ld, cycle_car:%d,ncar:%d] c:%d %d vbat:%d vbus:%d soc:%d %d gm3:%d %d %d %d\n",         fg_coulomb, gm.coulomb_plus.end,         gm.coulomb_minus.end, gm.soc_plus.end,         gm.soc_minus.end,         gm.bat_cycle_car, gm.bat_cycle_ncar,         fg_current_state, fg_current, bat_vol, chr_vol,         battery_get_soc(), battery_get_uisoc(),         gm.disableGM30, fg_cust_data.disable_nafg,         gm.ntc_disable_nafg, gm.cmd_disable_nafg);     if (bat_get_debug_level() >= 7)         gauge_coulomb_dump_list();     fg_current_iavg = gauge_get_average_current(&valid);     fg_nafg_monitor();     bm_err("tmp:%d %d %d hcar2:%d lcar2:%d time:%d sw_iavg:%d %d %d nafg_m:%d %d %d\n",         tmp, gm.fg_bat_tmp_int_ht, gm.fg_bat_tmp_int_lt,         gm.fg_bat_int2_ht, gm.fg_bat_int2_lt,         fg_get_system_sec(), gm.sw_iavg, fg_current_iavg, valid,         gm.last_nafg_cnt, gm.is_nafg_broken, gm.disable_nafg_int);     if (cnt % 10 == 0)         gauge_dev_dump(gm.gdev, NULL, 0);     cnt++;     gm3_log_dump(false);     gm3_log_dump_nafg(1);     wakeup_fg_algo_cmd(         FG_INTR_KERNEL_CMD,         FG_KERNEL_CMD_DUMP_REGULAR_LOG, 0);     if (bat_get_debug_level() >= BMLOG_DEBUG_LEVEL)         ktime = ktime_set(10, 0);     else         ktime = ktime_set(60, 0);     hrtimer_start(&gm.fg_hrtimer, ktime, HRTIMER_MODE_REL); }

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int bat_get_debug_level(void) {     return gm.log_level; }

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/* ============================================================ */ /* typedef and Struct*/ /* ============================================================ */ #define BMLOG_ERROR_LEVEL   3 #define BMLOG_WARNING_LEVEL 4 #define BMLOG_NOTICE_LEVEL  5 #define BMLOG_INFO_LEVEL    6 #define BMLOG_DEBUG_LEVEL   7 #define BMLOG_TRACE_LEVEL   8 #define BM_DAEMON_DEFAULT_LOG_LEVEL 3

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/* ============================================================ */ /* alarm timer handler */ /* ============================================================ */ static enum alarmtimer_restart tracking_timer_callback(     struct alarm *alarm, ktime_t now) {     gm.tracking_cb_flag = 1;     wake_up(&gm.wait_que);     return ALARMTIMER_NORESTART; } static enum alarmtimer_restart one_percent_timer_callback(     struct alarm *alarm, ktime_t now) {     gm.onepercent_cb_flag = 1;     wake_up(&gm.wait_que);     return ALARMTIMER_NORESTART; } void bmd_ctrl_cmd_from_user(void *nl_data, struct fgd_nl_msg_t *ret_msg) {     ... ...     case FG_DAEMON_CMD_SET_FG_TIME:     {         int secs;         struct timespec time, time_now, end_time;         ktime_t ktime;         memcpy(&secs, &msg->fgd_data[0], sizeof(secs));         if (secs != 0 && secs > 0) {             get_monotonic_boottime(&time_now);             time.tv_sec = secs;             time.tv_nsec = 0;             end_time = timespec_add(time_now, time);             ktime = ktime_set(end_time.tv_sec, end_time.tv_nsec);             if (msg->fgd_subcmd_para1 == 0)                 alarm_start(&gm.tracking_timer, ktime);             else                 alarm_start(&gm.one_percent_timer, ktime);         } else {             if (msg->fgd_subcmd_para1 == 0)                 alarm_cancel(&gm.tracking_timer);             else                 alarm_cancel(&gm.one_percent_timer);         }         bm_err("[fr] FG_DAEMON_CMD_SET_FG_TIME = %d cmd:%d %d\n",             secs,             msg->fgd_subcmd, msg->fgd_subcmd_para1);     }     break;     ... ... }