linux-kernel - Mess in the /sysfs: class/power

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Date:	Sat, 31 Jan 2015 22:39:19 +0100
From:	Pavel Machek <pavel@....cz>
To:	kernel list <linux-kernel@...r.kernel.org>,
	Greg KH <greg@...ah.com>
Cc:	sre@...nel.org, dbaryshkov@...il.com, dwmw2@...radead.org,
	linux-pm@...r.kernel.org
Subject: Mess in the /sysfs: class/power_supply

Hi!

So we have multiple values in one sysfs file:

root@...0:/sys/class/power_supply# cat bq24150a-0/registers
0x00=0x50
0x01=0xc8
0x02=0x8e
0x03=0x4b
0x04=0x99

(should this go to debugfs somewhere?)

Unobvious and undocumented entries:

root@...0:/sys/class/power_supply# cat bq24150a-0/boost_status
0
pavel@duo:/data/l/linux-n900$ grep -ri boost_status Documentation/
pavel@duo:/data/l/linux-n900$ grep -ri termination_current Documentation/
pavel@duo:/data/l/linux-n900$ grep -ri current_now Documentation/
pavel@duo:/data/l/linux-n900$ grep -ri time_to_empty_avg Documentation/
pavel@duo:/data/l/linux-n900$


And different units in different parts of tree:

(these are mA)

root@...0:/sys/class/power_supply# cat bq24150a-0/current_limit
1800
root@...0:/sys/class/power_supply# cat bq24150a-0/termination_current
100

(and this is in uA)

root@...0:/sys/class/power_supply# cat bq27200-0/current_now
12138

(I believe uA is right, so it is bq24150a that should be fixed....?)

Ok, of course questions are: do we need to do something with it? If
so, what?

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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