高通pmic voter

Posted 2022-12-06 5念since

voter

• create_votable()
  Prototype
  struct votable *create_votable(const char *name, int votable_type,
  int (*callback)(struct votable *votable, void *data,
  int effective_result, const char *effective_client),
  void *data);
  Parameters

in name Name of the votable
in votable_type Votable type. Possible values:
■ VOTE_MIN
■ VOTE_MAX
■ VOTE_SET_ANY
in callback
Reference to executable code in which the callback is called in one of
the following conditions:
■ Change in election results
■ Voting takes place for the first time
in data
Private data to be passed
Returns
Votable object.

• destroy_votable()

vote()

pmic voter debugfs

xxxx:/sys/kernel/debug/pmic-votable # cd FCC
xxxx:/sys/kernel/debug/pmic-votable/FCC # ls
force_active  force_val  status
xxxx:/sys/kernel/debug/pmic-votable/FCC # cat status                                                                   
FCC: HW_LIMIT_VOTER:			en=0 v=-22
FCC: BATT_PROFILE_VOTER:			en=1 v=300000
FCC: FCC_STEPPER_VOTER:			en=0 v=0
FCC: QNOVO_VOTER:			en=0 v=0
FCC: THERMAL_DAEMON_VOTER:			en=0 v=0
FCC: JEITA_VOTER:			en=1 v=4500000
FCC: STEP_CHG_VOTER:			en=1 v=4500000
FCC: effective=BATT_PROFILE_VOTER type=Min v=300000

案例

• 关闭给电池充电，仅提供系统耗电

关闭
rc = vote(chg->chg_disable_votable, DEBUG_BOARD_VOTER, true, 0);
打开
rc = vote(chg->chg_disable_votable, DEBUG_BOARD_VOTER, true, 0);

• 为什么投票给DEBUG_BOARD_VOTER？

参考文档

80-pf777-77_g_sm8150_linux_android_pmic_charger_software_user_guide.pdf