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charging: add ibat monitor work

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As bq25890H HW limit, some otg devices have high current pulse
when inserted. bq25890H trigger OTG OCP, so otg devices can't work.
So we config max boost current limit for bq25890H. For avoiding ibat
more than battery max discharging current, we add ibat monitor work.

Change-Id: If1d11fb47e26577055a181ea846c473f2cf73ec2
Signed-off-by: mahj8 <mahj8@motorola.com>
Reviewed-on: https://gerrit.mot.com/2145129
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Lu Chai <chailu1@motorola.com>
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
mahj8 2021-12-15 16:41:37 +08:00 • committed by Haijian Ma
commit d8253a9ab8
2 changed files with 54 additions and 8 deletions
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59
drivers/power/mmi_discrete_charger/mmi_discrete_charger_core.c
View file

@ -75,6 +75,11 @@ static int mmi_discrete_parse_dts(struct mmi_discrete_charger *chip)
if (rc < 0)
chip->otg_cl_ua = MICRO_1PA;
rc = of_property_read_u32(node,
"mmi,bat-ocp-ua", &chip->bat_ocp_ua);
if (rc < 0)
chip->bat_ocp_ua = 0;
of_property_read_u32(node, "mmi,hvdcp2-max-icl-ua",
&chip->hvdcp2_max_icl_ua);
if (chip->hvdcp2_max_icl_ua <= 0)
@ -709,23 +714,60 @@ int mmi_discrete_otg_enable(struct mmi_discrete_charger *chip, bool en)
return rc;
}
chip->vbus_enabled = en;
if (chip->bat_ocp_ua) {
if (en == true)
schedule_delayed_work(&chip->monitor_ibat_work, msecs_to_jiffies(1000));
else
cancel_delayed_work(&chip->monitor_ibat_work);
}
}
return rc;
}
static void mmi_discrete_monitor_ibat_work(struct work_struct *work)
{
struct mmi_discrete_charger *chip = container_of(work,
struct mmi_discrete_charger,
monitor_ibat_work.work);
union power_supply_propval val = {0, };
int ret = 0;
int total_current = 0;
int average_current = 0;
int i = 0;
for (i = 0; i < 3; i++) {
ret = get_batt_current_now(chip, &val);
if (ret) {
val.intval = 0;
}
total_current += val.intval;
val.intval = 0;
msleep(100);
}
average_current = total_current / i;
if (average_current < 0)
average_current = average_current * (-1);
if (average_current > chip->bat_ocp_ua) {
mmi_discrete_otg_enable(chip, false);
mmi_info(chip, "battery current %d > %d, disable OTG\n",
average_current, chip->bat_ocp_ua);
} else
schedule_delayed_work(&chip->monitor_ibat_work, msecs_to_jiffies(1000));
}
static void mmi_discrete_check_otg_power(struct mmi_discrete_charger *chip)
{
int rc = 0;
if (chip->vbus_enabled) {
rc = charger_dev_enable_otg(chip->master_chg_dev, false);
if (rc)
mmi_err(chip, "Unable to disable vbus (%d)\n", rc);
else {
chip->vbus_enabled = false;
mmi_info(chip, "VBUS Disable due to Charger\n");
}
mmi_discrete_otg_enable(chip, false);
mmi_info(chip, "VBUS OTG Disable due to Charger\n");
}
}
@ -2720,6 +2762,7 @@ static int mmi_discrete_probe(struct platform_device *pdev)
mmi_info(chip, "IPC logging is enabled for MMI DISCRETE\n");
INIT_DELAYED_WORK(&chip->charger_work, mmi_discrete_charger_work);
INIT_DELAYED_WORK(&chip->monitor_ibat_work, mmi_discrete_monitor_ibat_work);
chip->batt_psy = devm_power_supply_register(chip->dev,
&batt_psy_desc,

3
drivers/power/mmi_discrete_charger/mmi_discrete_charger_core.h
View file

@ -93,6 +93,9 @@ struct mmi_discrete_charger {
int real_charger_type;
int hvdcp2_max_icl_ua;
struct delayed_work monitor_ibat_work;
int bat_ocp_ua;
/* extcon for VBUS / ID notification to USB for type-c only */
struct extcon_dev *extcon;