Re: [PATCH v3 2/2] fbcon: expose cursor blink interval via sysfs

2015-02-25 Thread Pavel Machek
On Mon 2015-01-26 20:41:53, Scot Doyle wrote:
> The fbcon cursor, when set to blink, is hardcoded to toggle display state
> five times per second. Expose this setting via
> /sys/class/graphics/fbcon/cursor_blink_ms
> 
> Values written to the interface set the approximate time interval in
> milliseconds between cursor toggles, from 1 to 32767. Since the interval
> is stored internally as a number of jiffies, the millisecond value read
> from the interface may not exactly match the entered value.
> 
> An outstanding blink timer is reset after a new value is entered.
> 
> If the cursor blink is disabled, either via the 'cursor_blink' boolean
> setting or some other mechanism, the 'cursor_blink_ms' setting may still
> be modified. The new value will be used if the blink is reactivated.
> 
> Signed-off-by: Scot Doyle 

Normally, this would be set by ansi escape sequences, no? We can hide
cursor using them, set its appearance.. makes sense to change timing
value there, too
Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) 
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH v3 2/2] fbcon: expose cursor blink interval via sysfs

2015-01-26 Thread Richard Weinberger
On Mon, Jan 26, 2015 at 9:41 PM, Scot Doyle  wrote:
> The fbcon cursor, when set to blink, is hardcoded to toggle display state
> five times per second. Expose this setting via
> /sys/class/graphics/fbcon/cursor_blink_ms
>
> Values written to the interface set the approximate time interval in
> milliseconds between cursor toggles, from 1 to 32767. Since the interval
> is stored internally as a number of jiffies, the millisecond value read
> from the interface may not exactly match the entered value.
>
> An outstanding blink timer is reset after a new value is entered.
>
> If the cursor blink is disabled, either via the 'cursor_blink' boolean
> setting or some other mechanism, the 'cursor_blink_ms' setting may still
> be modified. The new value will be used if the blink is reactivated.

Out of curiosity, why do you need this new setting?
Your patch describes what it does but does not describe the "why".

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