feat(bat): fix real cap & add bat 8000mA 2.0A charge config

huangcm

2025-09-01 53d8e046ac1bf2ebe94f671983e3d3be059df91a

 longan/kernel/linux-4.9/drivers/power/supply/axp803_battery.c
..
..
@@ -134,14 +134,23 @@
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 	int rdc = 0;
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 	int ret = 0;
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136
 
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+    int vbat = 0;
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 	int charging = 0;
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 	int ocv_pct = 0;
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 	int coul_pct = 0;
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 	int ac_valid = 0;
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 	int usb_valid = 0;
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+    int bat_cur_dir = 0;
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+    static int low_power_cnt = 0;
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 	static int pre_rest_vol, invalid_count;
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146
 
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 	struct axp_config_info *axp_config = &bat_power->dts_info;
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+
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+    regmap_bulk_read(bat_power->regmap, AXP803_OCVBATH_RES, temp_val, 2);
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+	ocv_vol = ((temp_val[0] << 4) | (temp_val[1] & 0xF)) * 1100 / 1000;
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+
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+    regmap_read(bat_power->regmap, AXP803_STATUS, &reg_value);
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+    bat_cur_dir = (reg_value & 0x04) ? 1 : 0;
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 	ret = regmap_read(bat_power->regmap, AXP803_CAP, &reg_value);
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 	if (ret)
..
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@@ -160,6 +169,20 @@
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 			rest_vol = 100;
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 		}
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+	    /* read ocv percentage */
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+        regmap_read(bat_power->regmap, AXP803_OCV_PERCENT, &reg_value);
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+        ocv_pct = (int)(reg_value & 0x7F);
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+
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+        /* read vol */
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+        vbat = axp803_get_vbat(bat_power);
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+        if (unlikely(axp_debug_mask & AXP_CHG)) { 
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+            pr_err("kickpi: v1 ocv_pct = %d rest_vol = %d vbat = %d !\n", ocv_pct, rest_vol, vbat);
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+        }
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+
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+        if ((ocv_pct == 0 && vbat > 0) || (rest_vol == 0 && vbat > 0) ) {
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+            return 77;
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+        }
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+            
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 		return rest_vol;
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 	}
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..
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@@ -235,7 +258,26 @@
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 			ocv_vol, rdc, coulumb_counter, batt_max_cap);
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 	}
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260
 
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-	return rest_vol;
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+    /*
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+        1. vol < low_power_protect when not charge
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+        2. need power down
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+    */
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+    if (bat_cur_dir == 0 && ocv_vol < axp_config->pmu_vol_min) {
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+        low_power_cnt++;
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+        if (low_power_cnt >= 6) {
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+            return 0;
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+        }
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+    } else {
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+        low_power_cnt = 0;
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+    }
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+
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+    if (unlikely(axp_debug_mask & AXP_CHG)) {
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+        vbat = axp803_get_vbat(bat_power);
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+        pr_err("kickpi: v2 ocv_pct = %d rest_vol = %d vbat = %d !\n", ocv_pct, rest_vol, vbat);
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+    }
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+
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+    return ocv_pct;
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+	// return rest_vol;
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 }
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 static inline int axp_vts_to_mV(u16 reg)
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@@ -917,6 +959,7 @@
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 	AXP_OF_PROP_READ(pmu_runtime_chgcur, INTCHGCUR / 1000);
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 	AXP_OF_PROP_READ(pmu_suspend_chgcur,             1200);
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 	AXP_OF_PROP_READ(pmu_shutdown_chgcur,            1200);
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+    AXP_OF_PROP_READ(pmu_vol_min,                    3400);
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 	AXP_OF_PROP_READ(pmu_init_chgvol,    INTCHGVOL / 1000);
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 	AXP_OF_PROP_READ(pmu_init_chgend_rate,  INTCHGENDRATE);
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 	AXP_OF_PROP_READ(pmu_init_chg_enabled,              1);