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>,
Sebastian Reichel <sre@kernel.org>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Ard Biesheuvel <ardb@kernel.org>
Cc: 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-i2c@vger.kernel.org,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-efi@vger.kernel.org
Subject: Re: [PATCH v2 04/20] power: supply: bq25890: Reduce reported CONSTANT_CHARGE_CURRENT_MAX for low temperatures
Date: Tue, 16 Nov 2021 10:43:10 +0100 [thread overview]
Message-ID: <2314890c-cec3-7d1a-125d-47fc7b1d2625@redhat.com> (raw)
In-Reply-To: <20211114170335.66994-5-hdegoede@redhat.com>
Hi,
On 11/14/21 18:03, Hans de Goede wrote:
> 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>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
> drivers/power/supply/bq25890_charger.c | 33 +++++++++++++++++++++++---
> 1 file changed, 30 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c
> index b208cc2193b8..617a653221ab 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 {
> @@ -383,6 +384,14 @@ 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) {
> @@ -474,6 +483,18 @@ 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:
> @@ -486,6 +507,10 @@ static int bq25890_power_supply_get_property(struct power_supply *psy,
> if (ret < 0)
> return ret;
>
> + ret = bq25890_field_read(bq, F_JEITA_VSET);
> + if (ret < 0)
> + return ret;
> +
> /* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */
> val->intval = 2304000 + ret * 20000;
> break;
Ugh, this should not be here. I guess this is a leftover from an attempt to
also apply temperature correction to the POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE
prop.
I'll drop this for v3 of the series. Note I'll first wait a week or so for
other feedback.
Regards,
Hans
> @@ -549,7 +574,8 @@ 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++) {
> @@ -560,9 +586,10 @@ 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;
> }
>
next prev parent reply other threads:[~2021-11-16 9:43 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-14 17:03 [PATCH v2 00/20] power-suppy/i2c/extcon: Fix charger setup on Xiaomi Mi Pad 2 and Lenovo Yogabook Hans de Goede
2021-11-14 17:03 ` [PATCH v2 01/20] power: supply: core: Refactor power_supply_set_input_current_limit_from_supplier() Hans de Goede
2021-11-14 17:03 ` [PATCH v2 02/20] power: supply: bq25890: Fix ADC continuous conversion setting when charging Hans de Goede
2021-11-14 17:03 ` [PATCH v2 03/20] power: supply: bq25890: Rename IILIM field to IINLIM Hans de Goede
2021-11-14 17:03 ` [PATCH v2 04/20] power: supply: bq25890: Reduce reported CONSTANT_CHARGE_CURRENT_MAX for low temperatures Hans de Goede
2021-11-16 9:43 ` Hans de Goede [this message]
2021-11-14 17:03 ` [PATCH v2 05/20] power: supply: bq25890: Add a bq25890_rw_init_data() helper Hans de Goede
2021-11-14 17:03 ` [PATCH v2 06/20] power: supply: bq25890: Add support to skip reset at probe() / remove() Hans de Goede
2021-11-14 17:03 ` [PATCH v2 07/20] power: supply: bq25890: Add support to read back the settings from the chip Hans de Goede
2021-11-14 17:03 ` [PATCH v2 08/20] power: supply: bq25890: Enable charging on boards where we skip reset Hans de Goede
2021-11-14 17:03 ` [PATCH v2 09/20] power: supply: bq25890: Drop dev->platform_data == NULL check Hans de Goede
2021-11-16 11:02 ` Andy Shevchenko
2021-11-14 17:03 ` [PATCH v2 10/20] power: supply: bq25890: Add bq25890_set_otg_cfg() helper Hans de Goede
2021-11-15 10:11 ` Yauhen Kharuzhy
2021-11-16 9:33 ` Hans de Goede
[not found] ` <CAKWEGV7WVsZK=890UG=t3dhqCuoD-6N44DPMzk-_8TSPBm4_Dg@mail.gmail.com>
2021-11-28 15:02 ` Hans de Goede
2021-11-28 19:46 ` Yauhen Kharuzhy
2021-11-14 17:03 ` [PATCH v2 11/20] power: supply: bq25890: Add support for registering the Vbus boost converter as a regulator Hans de Goede
2021-11-16 11:05 ` Andy Shevchenko
2021-11-14 17:03 ` [PATCH v2 12/20] power: supply: bq25890: On the bq25892 set the IINLIM based on external charger detection Hans de Goede
2021-11-14 17:03 ` [PATCH v2 13/20] power: supply: bq25890: Support higher charging voltages through Pump Express+ protocol Hans de Goede
2021-11-16 11:14 ` Andy Shevchenko
2021-11-16 11:40 ` Hans de Goede
2021-11-14 17:03 ` [PATCH v2 14/20] mfd: intel_soc_pmic_chtwc: Add intel_cht_wc_get_model() helper function Hans de Goede
2021-11-16 11:18 ` Andy Shevchenko
2021-11-16 11:43 ` Hans de Goede
2021-11-28 9:53 ` Hans de Goede
2021-11-14 17:03 ` [PATCH v2 15/20] i2c: cht-wc: Make charger i2c-client instantiation board/device-model specific Hans de Goede
2021-11-16 11:20 ` Andy Shevchenko
2021-11-16 11:44 ` Hans de Goede
2021-11-23 8:24 ` Wolfram Sang
2021-11-28 14:04 ` Hans de Goede
2021-11-14 17:03 ` [PATCH v2 16/20] extcon: intel-cht-wc: Use new intel_cht_wc_get_model() helper Hans de Goede
2021-11-17 6:47 ` Chanwoo Choi
2021-11-17 22:28 ` Hans de Goede
2021-11-14 17:03 ` [PATCH v2 17/20] extcon: intel-cht-wc: Support devs with Micro-B / USB-2 only Type-C connectors Hans de Goede
2021-11-16 11:28 ` Andy Shevchenko
2021-11-16 11:31 ` Andy Shevchenko
2021-11-16 11:32 ` Andy Shevchenko
2021-11-16 11:51 ` Hans de Goede
2021-11-14 17:03 ` [PATCH v2 18/20] extcon: intel-cht-wc: Refactor cht_wc_extcon_get_charger() Hans de Goede
2021-11-17 7:15 ` Chanwoo Choi
2021-11-17 22:30 ` Hans de Goede
2021-11-19 15:44 ` Chanwoo Choi
2021-11-28 14:17 ` Hans de Goede
2021-11-14 17:03 ` [PATCH v2 19/20] extcon: intel-cht-wc: Add support for registering a power_supply class-device Hans de Goede
2021-11-16 15:19 ` Andy Shevchenko
2021-11-14 17:03 ` [PATCH v2 20/20] extcon: intel-cht-wc: Report RID_A for ACA adapters Hans de Goede
2021-11-16 11:00 ` [PATCH v2 00/20] power-suppy/i2c/extcon: Fix charger setup on Xiaomi Mi Pad 2 and Lenovo Yogabook Andy Shevchenko
2021-11-16 11:05 ` Hans de Goede
2021-11-17 18:56 ` Sebastian Reichel
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