linux-kernel - Re: [PATCH 1/1 v4] leds: Add LED driver for lm3556 chip

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Date:	Fri, 22 Jun 2012 14:47:04 -0500
From:	Rob Landley <rob@...dley.net>
To:	"G.Shark Jeong" <gshark.jeong@...il.com>
CC:	Bryan Wu <bryan.wu@...onical.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Daniel Jeong <daniel.jeong@...com>,
	linux-kernel@...r.kernel.org, milo kim <milo.kim@...com>,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH 1/1 v4] leds: Add LED driver for lm3556 chip

On 06/21/2012 07:12 PM, G.Shark Jeong wrote:
> From: "G.Shark Jeong" <gshark.jeong@...il.com>
> 
> LM3556 :
> The LM3556 is a 4 MHz fixed-frequency synchronous boost
> converter plus 1.5A constant current driver for a high-current white LED.
> Datasheet: www.national.com/ds/LM/LM3556.pdf
> 
> Tested on OMAP4430
...
> +Indicator pattern example:
> +pattern 0: #echo 0 > sys/class/leds/indicator/pattern
> +....
> +pattern 3: #echo 3 > sys/class/leds/indicator/pattern
> +
> +Indicater brightness can be controlled through

Indicator

> +sys/class/leds/indicator/brightness file.
> +
> +Example:
> +OFF      : #echo 0 > sys/class/leds/indicator/brightness
> +5.86 mA  : #echo 1 > sys/class/leds/indicator/brightness
> +........
> +46.875mA : #echo 8 > sys/class/leds/indicator/brightness
> +
> +Notes
> +-----
> +Driver expects it is registered using the i2c_board_info mechanism.
> +Toregister the chip at address 0x63 on specific adapter, set the platform data

To register

> --- a/drivers/leds/Kconfig
> +++ b/drivers/leds/Kconfig
> @@ -415,6 +415,14 @@ config LEDS_MAX8997
>  	  This option enables support for on-chip LED drivers on
>  	  MAXIM MAX8997 PMIC.
>  
> +config LEDS_LM3556
> +	tristate "LED support for LM3556 Chip"
> +	depends on LEDS_CLASS && I2C
> +	select REGMAP_I2C
> +	help
> +	  This option enables support for LEDs connected LM3556.

connected to

Other than that, documentation bits Acked-by me.

Rob
-- 
GNU/Linux isn't: Linux=GPLv2, GNU=GPLv3+, they can't share code.
Either it's "mere aggregation", or a license violation.  Pick one.
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