From: Matti Vaittinen <mazziesaccount@gmail.com>
To: Linus Walleij <linus.walleij@linaro.org>,
Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Cc: Sebastian Reichel <sre@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Lee Jones <lee.jones@linaro.org>,
rostokus@gmail.com, fan.chen@mediatek.com,
linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-power@fi.rohmeurope.com
Subject: Re: [RFC PATCH v3 6/9] power: supply: Add batinfo functions for OCV to SOC with 0.1% accuracy
Date: Fri, 19 Nov 2021 10:11:20 +0200 [thread overview]
Message-ID: <ef036c92-ced4-cc36-08df-c0dd49e00249@gmail.com> (raw)
In-Reply-To: <CACRpkdZ4HvgYyssNw_bfWR-7YQXEe_nPOtZChY_ZPUpz_Ga7jA@mail.gmail.com>
On 11/19/21 03:49, Linus Walleij wrote:
> On Tue, Nov 16, 2021 at 1:27 PM Matti Vaittinen
> <matti.vaittinen@fi.rohmeurope.com> wrote:
>
>> The battery info functions computing the state-of-charge (SOC) based
>> on open-circuit-voltage (OCV) are returning SOC using units of 1%.
>>
>> Some capacity estimation computations require higher accuracy. Add
>> functions that return SOC using units of 0.1% to reduce rounding error.
>>
>> Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
>
> That sounds useful.
>
>> +int power_supply_ocv2dcap_simple(struct power_supply_battery_ocv_table *table,
>> + int table_len, int ocv)
>> +{
>> + int i, cap, tmp;
>
> Why a whole new function? Just rename the original power_supply_ocv2cap_simple()
> to power_supply_ocv2dcap_simple and patch it to return the finegrained value,
> then add a wrapper that use that function but drops it down by one order
> of magnitude.
/me feels slightly stupid.
I wonder ehy you had to explain this to me :) Well, thanks and agreed!
>
>> +int power_supply_batinfo_ocv2dcap(struct power_supply_battery_info *info,
>> + int ocv, int temp)
>
> Same with this, saves a lot of code!
>
> (Also will use my new interpolation routines since you refactor
> on top of that.)
yup. I think this will be _much_ cleaner. I need to revise also the IC
driver patches because I think I implemented something like your
interpolation routines there too. So - thanks.
Best Regards
Matti
next prev parent reply other threads:[~2021-11-19 8:11 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-16 12:24 [RFC PATCH v3 0/9] power: supply: Add some fuel-gauge logic Matti Vaittinen
2021-11-16 12:24 ` [RFC PATCH v3 1/9] dt-bindings: battery: Add temperature-capacity degradation table Matti Vaittinen
2021-11-16 14:02 ` Rob Herring
2021-11-18 1:57 ` Linus Walleij
2021-11-18 5:27 ` Vaittinen, Matti
2021-11-16 12:25 ` [RFC PATCH v3 2/9] power: supply: add cap2ocv batinfo helper Matti Vaittinen
2021-11-18 2:02 ` Linus Walleij
2021-11-18 5:30 ` Vaittinen, Matti
2021-11-16 12:25 ` [RFC PATCH v3 3/9] power: supply: Support DT originated temperature-capacity tables Matti Vaittinen
2021-11-18 2:10 ` Linus Walleij
2021-11-18 6:11 ` Vaittinen, Matti
2021-11-26 11:56 ` Vaittinen, Matti
2021-11-26 12:35 ` Matti Vaittinen
2021-11-27 0:55 ` Linus Walleij
2021-11-27 0:54 ` Linus Walleij
2021-11-28 8:51 ` Vaittinen, Matti
2021-11-30 1:34 ` Linus Walleij
2021-11-30 6:33 ` Vaittinen, Matti
2021-12-02 1:57 ` Linus Walleij
2021-12-02 6:29 ` Vaittinen, Matti
2021-12-05 0:30 ` Linus Walleij
2021-11-16 12:26 ` [RFC PATCH v3 4/9] power: supply: Add batinfo getters usable prior supply registration Matti Vaittinen
2021-11-19 1:42 ` Linus Walleij
2021-11-16 12:27 ` [RFC PATCH v3 5/9] power: supply: Add constant battery aging degradation to batinfo Matti Vaittinen
2021-11-16 12:27 ` [RFC PATCH v3 6/9] power: supply: Add batinfo functions for OCV to SOC with 0.1% accuracy Matti Vaittinen
2021-11-19 1:49 ` Linus Walleij
2021-11-19 8:11 ` Matti Vaittinen [this message]
2021-11-16 12:28 ` [RFC PATCH v3 7/9] power: supply: add simple-gauge for SOC estimation and CC correction Matti Vaittinen
2021-11-19 1:54 ` Linus Walleij
2021-11-16 12:29 ` [RFC PATCH v3 8/9] mfd: bd71828, bd71815 prepare for power-supply support Matti Vaittinen
2021-11-16 12:29 ` [RFC PATCH v3 9/9] power: supply: Add bd718(15/27/28/78) charger driver Matti Vaittinen
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