From: Hans de Goede <hdegoede@redhat.com>
To: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Mark Gross <markgross@kernel.org>,
Andy Shevchenko <andy@infradead.org>,
Wolfram Sang <wsa@the-dreams.de>,
Lee Jones <lee.jones@linaro.org>,
Sebastian Reichel <sre@kernel.org>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Ard Biesheuvel <ardb@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>, Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org, Yauhen Kharuzhy <jekhor@gmail.com>,
Tsuchiya Yuto <kitakar@gmail.com>,
platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org
Subject: [PATCH v4 03/20] power: supply: bq25890: Reduce reported CONSTANT_CHARGE_CURRENT_MAX for low temperatures
Date: Mon, 6 Dec 2021 10:33:01 +0100 [thread overview]
Message-ID: <20211206093318.45214-4-hdegoede@redhat.com> (raw)
In-Reply-To: <20211206093318.45214-1-hdegoede@redhat.com>
From: Yauhen Kharuzhy <jekhor@gmail.com>
Take into account possible current reduction due to low-temperature when
reading POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX. As described in
the datasheet in cool (0-20° Celcius) conditions the current limit is
decreased to 20% or 50% of ICHG field value depended on JEITA_ISET field.
Also add NTC_FAULT field value to the debug message in
bq25890_get_chip_state().
Changed by Hans de Goede:
- Fix reading F_CHG_FAULT instead of F_NTC_FIELD for state->ntc_fault
- Only read JEITA_ISET field if necessary
- Tweak commit message a bit
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Co-developed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v3:
- Drop chunk adding a F_JEITA_VSET read to bq25890_power_supply_get_property()
which accidentally got added to this patch
---
drivers/power/supply/bq25890_charger.c | 29 +++++++++++++++++++++++---
1 file changed, 26 insertions(+), 3 deletions(-)
diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c
index fb987579d05a..7a3269c06b38 100644
--- a/drivers/power/supply/bq25890_charger.c
+++ b/drivers/power/supply/bq25890_charger.c
@@ -94,6 +94,7 @@ struct bq25890_state {
u8 vsys_status;
u8 boost_fault;
u8 bat_fault;
+ u8 ntc_fault;
};
struct bq25890_device {
@@ -407,6 +408,14 @@ enum bq25890_chrg_fault {
CHRG_FAULT_TIMER_EXPIRED,
};
+enum bq25890_ntc_fault {
+ NTC_FAULT_NORMAL = 0,
+ NTC_FAULT_WARM = 2,
+ NTC_FAULT_COOL = 3,
+ NTC_FAULT_COLD = 5,
+ NTC_FAULT_HOT = 6,
+};
+
static bool bq25890_is_adc_property(enum power_supply_property psp)
{
switch (psp) {
@@ -499,6 +508,18 @@ static int bq25890_power_supply_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
val->intval = bq25890_find_val(bq->init_data.ichg, TBL_ICHG);
+
+ /* When temperature is too low, charge current is decreased */
+ if (bq->state.ntc_fault == NTC_FAULT_COOL) {
+ ret = bq25890_field_read(bq, F_JEITA_ISET);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ val->intval /= 5;
+ else
+ val->intval /= 2;
+ }
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
@@ -583,7 +604,8 @@ static int bq25890_get_chip_state(struct bq25890_device *bq,
{F_VSYS_STAT, &state->vsys_status},
{F_BOOST_FAULT, &state->boost_fault},
{F_BAT_FAULT, &state->bat_fault},
- {F_CHG_FAULT, &state->chrg_fault}
+ {F_CHG_FAULT, &state->chrg_fault},
+ {F_NTC_FAULT, &state->ntc_fault}
};
for (i = 0; i < ARRAY_SIZE(state_fields); i++) {
@@ -594,9 +616,10 @@ static int bq25890_get_chip_state(struct bq25890_device *bq,
*state_fields[i].data = ret;
}
- dev_dbg(bq->dev, "S:CHG/PG/VSYS=%d/%d/%d, F:CHG/BOOST/BAT=%d/%d/%d\n",
+ dev_dbg(bq->dev, "S:CHG/PG/VSYS=%d/%d/%d, F:CHG/BOOST/BAT/NTC=%d/%d/%d/%d\n",
state->chrg_status, state->online, state->vsys_status,
- state->chrg_fault, state->boost_fault, state->bat_fault);
+ state->chrg_fault, state->boost_fault, state->bat_fault,
+ state->ntc_fault);
return 0;
}
--
2.33.1
next prev parent reply other threads:[~2021-12-06 9:33 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-06 9:32 [PATCH v4 00/20] power-suppy/i2c/extcon: Fix charger setup on Xiaomi Mi Pad 2 and Lenovo Yogabook Hans de Goede
2021-12-06 9:32 ` [PATCH v4 01/20] power: supply: core: Refactor power_supply_set_input_current_limit_from_supplier() Hans de Goede
2021-12-06 9:33 ` [PATCH v4 02/20] power: supply: bq25890: Rename IILIM field to IINLIM Hans de Goede
2021-12-06 9:33 ` Hans de Goede [this message]
2021-12-06 9:33 ` [PATCH v4 04/20] power: supply: bq25890: Add a bq25890_rw_init_data() helper Hans de Goede
2021-12-06 9:33 ` [PATCH v4 05/20] power: supply: bq25890: Add support to skip reset at probe() / remove() Hans de Goede
2021-12-06 9:33 ` [PATCH v4 06/20] power: supply: bq25890: Add support to read back the settings from the chip Hans de Goede
2021-12-06 9:33 ` [PATCH v4 07/20] power: supply: bq25890: Enable charging on boards where we skip reset Hans de Goede
2021-12-06 9:33 ` [PATCH v4 08/20] power: supply: bq25890: Drop dev->platform_data == NULL check Hans de Goede
2021-12-06 9:33 ` [PATCH v4 09/20] power: supply: bq25890: Add bq25890_set_otg_cfg() helper Hans de Goede
2021-12-06 9:33 ` [PATCH v4 10/20] power: supply: bq25890: Add support for registering the Vbus boost converter as a regulator Hans de Goede
2021-12-06 9:33 ` [PATCH v4 11/20] power: supply: bq25890: On the bq25892 set the IINLIM based on external charger detection Hans de Goede
2021-12-06 9:33 ` [PATCH v4 12/20] power: supply: bq25890: Support higher charging voltages through Pump Express+ protocol Hans de Goede
2021-12-06 9:33 ` [PATCH v4 13/20] power: supply: bq25890: Use the devm_regmap_field_bulk_alloc() helper Hans de Goede
2021-12-06 9:33 ` [PATCH v4 14/20] mfd: intel_soc_pmic_chtwc: Add cht_wc_model data to struct intel_soc_pmic Hans de Goede
2021-12-06 19:55 ` Andy Shevchenko
2021-12-06 21:46 ` Hans de Goede
2021-12-06 22:04 ` Andy Shevchenko
2021-12-17 10:09 ` Lee Jones
2021-12-06 9:33 ` [PATCH v4 15/20] i2c: cht-wc: Make charger i2c-client instantiation board/device-model specific Hans de Goede
2021-12-06 9:33 ` [PATCH v4 16/20] extcon: intel-cht-wc: Use new cht_wc_model intel_soc_pmic field Hans de Goede
2021-12-16 2:54 ` Chanwoo Choi
2021-12-06 9:33 ` [PATCH v4 17/20] extcon: intel-cht-wc: Support devs with Micro-B / USB-2 only Type-C connectors Hans de Goede
2021-12-16 2:54 ` Chanwoo Choi
2021-12-06 9:33 ` [PATCH v4 18/20] extcon: intel-cht-wc: Refactor cht_wc_extcon_get_charger() Hans de Goede
2021-12-16 2:54 ` Chanwoo Choi
2021-12-06 9:33 ` [PATCH v4 19/20] extcon: intel-cht-wc: Add support for registering a power_supply class-device Hans de Goede
2021-12-16 2:55 ` Chanwoo Choi
2021-12-06 9:33 ` [PATCH v4 20/20] extcon: intel-cht-wc: Report RID_A for ACA adapters Hans de Goede
2021-12-16 2:55 ` Chanwoo Choi
2022-01-30 20:45 [PATCH v4 resend 00/20] power-suppy/i2c/extcon: Fix charger setup on Xiaomi Mi Pad 2 and Lenovo Yogabook Hans de Goede
2022-01-30 20:45 ` [PATCH v4 03/20] power: supply: bq25890: Reduce reported CONSTANT_CHARGE_CURRENT_MAX for low temperatures Hans de Goede
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