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Add OVP and OCP for battery

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Add battery OVP and OCP for battery charging
to workaroud the CE certification.

Change-Id: I2004e4a280cf2e5e8ce0d19c501e4a338e45d500
Signed-off-by: Yonghua Yan <yanyh2@motorola.com>
Reviewed-on: https://gerrit.mot.com/2316155
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Yonghua Yan 2022-06-29 01:22:16 +08:00
commit 9f61fd6d0e
1 changed files with 38 additions and 0 deletions
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38
drivers/power/sgm4154x_charger_lite/sgm4154x_charger_lite.c
View file

@ -15,6 +15,7 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>
#include <linux/time64.h>
#include <linux/acpi.h>
#include <linux/gpio.h>
@ -2267,6 +2268,9 @@ static void sgm4154x_charger_set_constraint(void *data,
/* Battery presence detection threshold on battery temperature */
#define BPD_TEMP_THRE (-30)
#define PANIC_DEB_CNT_MAX (3)
#define VBAT_OVP_MV (4600)
#define IBAT_OCP_MA (1500)
#define PROTECT_DELAY_MS (60000)
static void sgm4154x_paired_battery_notify(void *data,
struct mmi_battery_info *batt_info)
{
@ -2287,6 +2291,10 @@ static void sgm4154x_paired_battery_notify(void *data,
static int panic_deb_cnt = 0;
static bool prev_high_load_en = false;
static bool prev_low_load_en = false;
struct timespec64 now;
static struct timespec64 start = {0};
uint32_t elapsed_ms;
static bool batt_protected = false;
if (!batt_info || batt_info->batt_mv <= 0) {
pr_warn("Invalid paired battery info\n");
@ -2386,6 +2394,36 @@ static void sgm4154x_paired_battery_notify(void *data,
low_load_en = false;
}
/* Monitor vbat and ibat for OVP and OCP */
if (chg->batt_info.batt_mv >= VBAT_OVP_MV) {
high_load_en = true;
low_load_en = true;
batt_protected = true;
ktime_get_real_ts64(&start);
pr_err("ERROR: vbat OVP is triggered, batt_mv=%dmV\n",
chg->batt_info.batt_mv);
} else if (chg->batt_info.batt_ma >= IBAT_OCP_MA) {
high_load_en = true;
low_load_en = true;
batt_protected = true;
ktime_get_real_ts64(&start);
pr_err("ERROR: ibat OCP is triggered, batt_ma=%dmA\n",
chg->batt_info.batt_ma);
} else if (batt_protected) {
ktime_get_real_ts64(&now);
elapsed_ms = (now.tv_sec - start.tv_sec) * 1000;
elapsed_ms += (now.tv_nsec - start.tv_nsec) / 1000000;
if (elapsed_ms < PROTECT_DELAY_MS &&
chg->chg_info.chrg_present) {
high_load_en = true;
low_load_en = true;
pr_warn("keep batt protected, elapsed=%dms\n", elapsed_ms);
} else {
batt_protected = false;
pr_warn("recover batt from ovp/ocp protection\n");
}
}
if (high_load_en != prev_high_load_en) {
if (gpio_is_valid(chg->sgm->high_load_en_gpio)) {
gpio_set_value(chg->sgm->high_load_en_gpio,