linux-kernel - Re: [PATCH] Adding LED1 & LED2 control for DA9034 backlight driver

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Message-ID: <dfeb90390909211107m1c61f8a9h5606059b6aabb7ee@mail.gmail.com>
Date:	Mon, 21 Sep 2009 11:07:58 -0700
From:	Arun KS <getarunks@...il.com>
To:	Eric Miao <eric.y.miao@...il.com>
Cc:	Haojian Zhuang <haojian.zhuang@...il.com>,
	linux-kernel@...r.kernel.org, rpurdie@...ys.net,
	eric.miao@...vell.com, mike@...pulab.co.il
Subject: Re: [PATCH] Adding LED1 & LED2 control for DA9034 backlight driver

On Mon, Sep 21, 2009 at 10:08 AM, Eric Miao <eric.y.miao@...il.com> wrote:
>
> > Apparently there is a bug in the hardware design on my custom board. We are
> > using LED1 for backlight control.
> > Thanks Haojian for clarification.
> >
>
> Now you know that :-)
>
> Either let your hardware engineer change the design, or there are still
> workarounds, you can control the LED1/2 through the sysfs entries.

If I apply the patch which I send, backlight driver is working well
through the da093x_bl.c driver.
Because LED1 driver is same as the WLED driver apart from current
level it can provide. WLED can provide max of 32mA but LED can only
provide current <500uA.

Thanks for your concern.

Arun

>
> - eric
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