linux-kernel - Re: [PATCH v2 14/15] charger: max14577: Configure battery-dependent settings from DTS

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Message-ID: <20140210121405.GH22773@lee--X1>
Date:	Mon, 10 Feb 2014 12:14:05 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Jenny Tc <jenny.tc@...el.com>
Subject: Re: [PATCH v2 14/15] charger: max14577: Configure battery-dependent
 settings from DTS

> Remove hard-coded values for:
>  - Fast Charge current,
>  - End Of Charge current,
>  - Fast Charge timer,
>  - Overvoltage Protection Threshold,
>  - Battery Constant Voltage,
> and use DTS to configure them. This allows using the max14577 charger
> driver with different batteries.
> 
> Now the charger driver requires valid configuration data from DTS. In
> case of wrong configuration data it fails during probe. Patch adds
> of_compatible to the charger mfd cell in MFD driver core.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Cc: Kyungmin Park <kyungmin.park@...sung.com>
> Cc: Marek Szyprowski <m.szyprowski@...sung.com>
> Cc: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
> Cc: David Woodhouse <dwmw2@...radead.org>
> Cc: Jenny Tc <jenny.tc@...el.com>
> ---
>  drivers/mfd/max14577.c               |    5 +-
>  drivers/power/max14577_charger.c     |  234 +++++++++++++++++++++++++++++-----
>  include/linux/mfd/max14577-private.h |   10 ++
>  include/linux/mfd/max14577.h         |    8 ++
>  4 files changed, 227 insertions(+), 30 deletions(-)

<snip>

> diff --git a/include/linux/mfd/max14577-private.h b/include/linux/mfd/max14577-private.h
> index a8cd7de3526a..50cf70bec4d4 100644
> --- a/include/linux/mfd/max14577-private.h
> +++ b/include/linux/mfd/max14577-private.h
> @@ -269,6 +269,16 @@ enum maxim_muic_charger_type {
>  #define MAX77836_CHARGER_CURRENT_LIMIT_HIGH_STEP	 25000U
>  #define MAX77836_CHARGER_CURRENT_LIMIT_MAX		475000U
>  
> +/* MAX14577 charger End-Of-Charge current limits (as in MAXIM_CHGCTRL5 register), uA */

Too many chars. Didn't checkpatch.pl complain about this?

> +#define MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN		50000U
> +#define MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP		10000U
> +#define MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX		200000U
> +
> +/* MAX14577/MAX77836 Battery Constant Voltage (as in MAXIM_CHGCTRL3
> register), uV */

Same here

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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