Message-ID: <4B0F88C4.9010206@gmail.com>
Date: Fri, 27 Nov 2009 09:07:32 +0100
From: Eric Dumazet <eric.dumazet@gmail.com>
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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
References: <20091127073119.GB1405@ucw.cz>
In-Reply-To: <20091127073119.GB1405@ucw.cz>
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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 ?

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