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From: Oleh Kravchenko <oleg@kaa.org.ua>
To: Jacek Anaszewski <jacek.anaszewski@gmail.com>,
	devicetree@vger.kernel.org, linux-leds@vger.kernel.org
Subject: Re: [PATCH v4 2/2] leds: add LED driver for EL15203000 board
Date: Wed, 14 Aug 2019 22:46:02 +0300
Message-ID: <11f6da3b-860a-2e52-e4fa-2a650fd2407b@kaa.org.ua> (raw)
In-Reply-To: <56fa6881-2af6-71ec-160c-7712075756be@gmail.com>

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Hello Jacek,

14.08.19 21:18, Jacek Anaszewski пише:
>>> Why the sequence "1 800 2 800 4 800 8 800 16 800" is duplicated here?
>>> It seems redundant. But aside of that - aren't the timings modifiable?
>>> In other words - are these all patterns somehow configurable or they are
>>> pre-programmed?
>>>
>>
>> All pattern is predefined, you can't change them at all.
>> I just tried to describe real things what happened in LED board.
>> It's ticks every 800 milliseconds for Pipe LEDs.
> 
> It makes me wonder how you figured out the values? If you have
> a documentation for this controller, could you share how the pattern
> settings are documented?

I saw the code of firmware.
Not sure if I can find any documentation for it right now.
 
>>>> +
>>>> +		Inverted cascade mode for Pipe LED:
>>>> +		"30 800 29 800 27 800 23 800 15 800 30 800 29 800 27 800 23 800 15 800"
>>>
>>> Similar duplication here.
>>>
>>>> +
>>>> +		Bounce mode for Pipe LED:
>>>> +		"1 800 2 800 4 800 8 800 16 800 16 800 8 800 4 800 2 800 1 800"
>>>
>>> Instead of two repeating "16 800" you could provide "16 1600".
>>> But here again is the question whether these values are configurable.
>>> From what I can see in your driver implementation you're expecting
>>> exactly the values provided in these examples to enable given hardware
>>> pattern (led_pattern_cmp()).
>>>
>>>> +
>>>> +		Inverted bounce mode for Pipe LED:
>>>> +		"30 800 29 800 27 800 23 800 15 800 15 800 23 800 27 800 29 800 30 800"
>>>
>>
>> Should I cut this patterns to smaller? Or let keep it?
>>
> 
> For the first two we could do without sequence duplication.

Ok, I will reduce it.

-- 
Best regards,
Oleh Kravchenko



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  reply index

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-08 20:32 [PATCH v4 1/2] dt-bindings: Add docs for EL15203000 Oleh Kravchenko
2019-08-08 20:32 ` [PATCH v4 2/2] leds: add LED driver for EL15203000 board Oleh Kravchenko
2019-08-13 20:28   ` Jacek Anaszewski
2019-08-13 20:37     ` Oleh Kravchenko
2019-08-14 18:18       ` Jacek Anaszewski
2019-08-14 19:46         ` Oleh Kravchenko [this message]
2019-08-14 19:57           ` Jacek Anaszewski
2019-08-14 20:16             ` Oleh Kravchenko
2019-08-14 20:53               ` Jacek Anaszewski
2019-08-14 20:58                 ` Oleh Kravchenko
2019-08-17 15:02               ` Pavel Machek
2019-08-20  7:46                 ` Oleh Kravchenko
2019-08-18 13:47   ` Jacek Anaszewski
2019-08-27 20:43     ` Oleh Kravchenko
2019-08-27 20:56       ` Jacek Anaszewski
2019-08-27 21:11         ` Oleh Kravchenko
2019-08-27 21:18           ` Jacek Anaszewski
2019-08-27 21:26             ` Oleh Kravchenko
2019-08-13 20:31 ` [PATCH v4 1/2] dt-bindings: Add docs for EL15203000 Dan Murphy
2019-08-14 19:54   ` Jacek Anaszewski
2019-08-18 13:41 ` Jacek Anaszewski
2019-08-20  7:50   ` Oleh Kravchenko

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