Re: [PATCH] Add LED pattern trigger

[Richard Weinberger]

On Tue, Dec 31, 2013 at 12:33 PM, Pavel Machek <pavel@xxxxxx> wrote:
> On Tue 2013-12-31 00:00:39, Joe Xue wrote:
>> > What about something like this?
>> >
>> > Not shcheduling timer when nothing changed should save a bit of power/cpu...
>> >
>> > if (pattern_data->pattern[pattern_data->count] == '/') {
>> > return;
>> > }
>> >
>> > this = pattern_data->pattern[pattern_data->count]
>> > if (this == '#')
>> > new_brigtness = pattern_data->brightness_on;
>> > if (this == ' ')
>> > new_brigtness = LED_OFF;
>> > repeat = 1;
>> > while (pattern_data->pattern[pattern_data->count + repeat] == this)
>> > repeat++;
>> >
>> > mod_timer(&pattern_data->timer,
>> > jiffies + msecs_to_jiffies(pattern_data->delay_unit * repeat));
>> >
>> >
>> Working on it.
>>
>> Thanks for your help.
>
> You are welcome :-).

Why do we need this within the kernel?
Patterns can easily created using a simple user space program.

-- 
Thanks,
//richard
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/