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power: supply: rk817_battery: Resolve data overflow issue

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Data overflow during fast-charging may cause the battery
percentage to freeze near full capacity.

Change-Id: I1c9d8108196c7a102e1fd251cbda86cbfbaeffe8
Signed-off-by: Shengfei Xu <xsf@rock-chips.com>
This commit is contained in:
Shengfei Xu
2025-05-14 10:35:22 +08:00
committed by Tao Huang
parent 23397aa1ac
commit fedcfc9334
1 changed files with 15 additions and 9 deletions
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24
drivers/power/supply/rk817_battery.c
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@@ -94,6 +94,7 @@ module_param_named(dbg_level, dbg_enable, int, 0644);
#define DEFAULT_SLP_FILTER_CUR 100
#define DEFAULT_PWROFF_VOL_THRESD 3400
#define DEFAULT_MONITOR_SEC 5
#define DEFAULT_SAMPLE_RES 20
#define CONTACT_RES_MAX 50
@@ -2715,11 +2716,7 @@ static void rk817_bat_smooth_algorithm(struct rk817_battery_device *battery)
long cap_change;
long ydsoc = 0;
/* charge and discharge switch */
if ((battery->sm_linek * battery->current_avg <= 0)) {
DBG("<%s>. linek mode, retinit sm linek..\n", __func__);
rk817_bat_calc_sm_linek(battery);
}
rk817_bat_calc_sm_linek(battery);
battery->remain_cap = rk817_bat_get_capacity_uah(battery);
old_cap = battery->sm_remain_cap;
@@ -2767,8 +2764,7 @@ static void rk817_bat_smooth_algorithm(struct rk817_battery_device *battery)
rk817_bat_update_soc(battery, ydsoc);
battery->sm_remain_cap = battery->remain_cap;
rk817_bat_calc_sm_linek(battery);
/* rk817_bat_calc_sm_linek(battery); */
DBG("smooth: smooth_soc = %d, dsoc = %d\n",
battery->smooth_soc, battery->dsoc);
@@ -3346,7 +3342,7 @@ static void rk817_bat_relax_vol_calib(struct rk817_battery_device *battery)
static void rk817_bat_resume_profile_smoothing(struct rk817_battery_device *battery)
{
int delta_cap = 0, old_cap = 0;
unsigned long charge_soc;
uint64_t charge_soc;
int interval_sec = 0;
long cap_change;
long ydsoc = 0;
@@ -3387,7 +3383,7 @@ static void rk817_bat_resume_profile_smoothing(struct rk817_battery_device *batt
DBG("<%s>. k=%d, ydsoc=%ld; cap:old=%d, new:%d; delta_cap=%d\n",
__func__, battery->sm_linek, ydsoc, old_cap,
battery->sm_remain_cap, delta_cap);
battery->remain_cap, delta_cap);
/* finish:
* 1, suspend online: battery->sleep_chrg_online = 1
@@ -3405,7 +3401,14 @@ static void rk817_bat_resume_profile_smoothing(struct rk817_battery_device *batt
battery->smooth_soc = battery->dsoc;
battery->delta_cap_remainder = 0;
battery->sm_remain_cap = battery->remain_cap;
} else {
battery->smooth_soc += ydsoc;
battery->dsoc += ydsoc;
battery->delta_cap_remainder = cap_change % (10 * DIV(battery->fcc));
battery->sm_remain_cap = battery->remain_cap;
}
DBG("resume: interval_sec: %d,ydsoc: %ld, charge_soc: %lld, dsoc: %d\n",
interval_sec, ydsoc, charge_soc, battery->dsoc);
} else {
/* discharge mode, but ydsoc > 0, from charge status to dischrage
*/
@@ -3415,6 +3418,9 @@ static void rk817_bat_resume_profile_smoothing(struct rk817_battery_device *batt
battery->delta_cap_remainder = cap_change % (10 * DIV(battery->fcc));
battery->sm_remain_cap = battery->remain_cap;
}
DBG("resume: sm_remain_cap: %d, remain_cap: %d, delta_cap: %d delta_cap_remainder: %d,ydsoc: %d, dsoc: %d\n",
battery->sm_remain_cap, battery->remain_cap, delta_cap,
battery->delta_cap_remainder, interval_sec, battery->dsoc);
}
if (rk817_bat_field_read(battery, CHG_STS) == CHARGE_FINISH) {