From: eric.dumazet@gmail.com (Eric Dumazet)
To: linux-arm-kernel@lists.infradead.org
Subject: [patch] spitz: better voltage-to-percentage conversion
Date: Fri, 27 Nov 2009 09:07:32 +0100 [thread overview]
Message-ID: <4B0F88C4.9010206@gmail.com> (raw)
In-Reply-To: <20091127073119.GB1405@ucw.cz>
Pavel Machek a ?crit :
> Old code has two huge tables... unfortunately those tables are simple
> linear relationships and wrong: li-ions do not behave like that.
>
> Convert physical values to mV,mA,mOhm, add computation that makes
> sense for physical point of view, and provide tables based on
> measurements.
>
> To get even better results, we should provide better battery_current
> estimate (taking backlight into account), and adjust adjust
> battery_resistance according to its age and temperature.
>
> Signed-off-by: Pavel Machek <pavel@ucw.cz>
>
>
> --- a/arch/arm/mach-pxa/corgi_pm.c 2009-11-23 20:48:26.000000000 +0100
> +typedef int miliamp_t;
> +typedef int miliohm_t;
> +typedef int milivolt_t;
milliamp, milliohm, millivolt ?
WARNING: multiple messages have this Message-ID (diff)
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: rpurdie@rpsys.net, lenz@cs.wisc.edu,
kernel list <linux-kernel@vger.kernel.org>,
Dirk@Opfer-Online.de, arminlitzel@web.de,
Cyril Hrubis <metan@ucw.cz>,
thommycheck@gmail.com,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
dbaryshkov@gmail.com, omegamoon@gmail.com, eric.y.miao@gmail.com,
utx@penguin.cz
Subject: Re: [patch] spitz: better voltage-to-percentage conversion
Date: Fri, 27 Nov 2009 09:07:32 +0100 [thread overview]
Message-ID: <4B0F88C4.9010206@gmail.com> (raw)
In-Reply-To: <20091127073119.GB1405@ucw.cz>
Pavel Machek a écrit :
> Old code has two huge tables... unfortunately those tables are simple
> linear relationships and wrong: li-ions do not behave like that.
>
> Convert physical values to mV,mA,mOhm, add computation that makes
> sense for physical point of view, and provide tables based on
> measurements.
>
> To get even better results, we should provide better battery_current
> estimate (taking backlight into account), and adjust adjust
> battery_resistance according to its age and temperature.
>
> Signed-off-by: Pavel Machek <pavel@ucw.cz>
>
>
> --- a/arch/arm/mach-pxa/corgi_pm.c 2009-11-23 20:48:26.000000000 +0100
> +typedef int miliamp_t;
> +typedef int miliohm_t;
> +typedef int milivolt_t;
milliamp, milliohm, millivolt ?
next prev parent reply other threads:[~2009-11-27 8:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-27 7:31 [patch] spitz: better voltage-to-percentage conversion Pavel Machek
2009-11-27 7:31 ` Pavel Machek
2009-11-27 8:07 ` Eric Dumazet [this message]
2009-11-27 8:07 ` Eric Dumazet
2009-11-27 8:54 ` Russell King - ARM Linux
2009-11-27 8:54 ` Russell King - ARM Linux
2009-11-29 9:16 ` Pavel Machek
2009-11-29 9:16 ` Pavel Machek
-- strict thread matches above, loose matches on Subject: below --
2009-11-29 9:13 Pavel Machek
2009-11-29 9:13 ` Pavel Machek
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