Android battery changes and android battery changes

Android battery changes and android battery changes

Problem:
1. Power jump to 50%
2. Battery ID pin grounding
3. temperature pin to determine whether the battery is in place

Speculative reason:
How to determine the battery position:

qpnp-linear-charger.cenum bpd_type{　　BPD_TYPE_BAT_ID="bpd_id",　　BPD_TYPE_BAT_THM="bpd_thm",　　BPD_TYPE_BAT_THE_BAT_ID="bpd_thm_id",}

Check whether bpd has a value in the Device Tree.

of_property_read_string(chip->spmi->dev.of_node,"qcom,bpd-detection",&bpd)

If not, use the Code definition (based on the temperature script)

chip->cfg_bpd_detection = BPD_TYPE_BAT_THM;

Configure parameters to struct.
Battery capacity calculation:

get_prop_capacity(struct qpnp_lbd_chip *chip)

If the battery is not in place or is a false battery, the default battery (50) is returned)
Battery In-Place detection function: (call process)

Get_prop_batt_present (struct qpnp_lbc_chip * chip)
-> Qpnp_lbc_read (chip, chip-> bat_if_base + BAT_IF_PRES_STATUS_REG [0x08], & reg_val, 1)
->__ Qpnp_lbc_read (spmi, base, val, count)
-> Spmi_ext_register_read (spmi-> ctrl, spmi-> sid, base, val, count)
-> Spmi_read_cmd (ctrl, spmi_1__ext_readl, sid, addr, len-1, buf)
-> Ctrl-> read_cmd (ctrl, opcode, sid, addr, bc, buf)
Temperature Detection Function:

get_prop_batt_temp(struct qpnp_lbc_chip *chip) 

If the battery is false and the battery is not in place, the default temperature is returned.

qpnp_vadc_read(chip vadc_dev,LR_MUX1_BATT_THEM,&results)

If reading fails, the default temperature is returned.
-> If (channel = VBAT_SNS)
Read Voltage

qpnp_vadc_conv_seq_request(vadc,ADC_SEQ_NONE,channel,result)

Read Temperature

qpnp_vadc_conv_seq_request(vadc,ADC_SEQ_NONE,DIE_TEMP,&die_temp_result)

Read Compensation

qpnp_vbat_sns_comp(&result->physical,vadc,die_temp_result.physical)

Last return

qpnp_vadc_con_seq_request(vadc,ADC_SEQ_NONE,channel,result)

This project uses software to calculate power without a dedicated Power Meter Chip
Factors for calculating power: temperature, voltage, and current
Virtual electric gauge qpnp-vm-bms.c
Therefore, once the temperature collection is inaccurate, the electric usage percentage calculation will be incorrect.