linux-kernel - Re: [GIT PULL] Ambient Light Sensors subsystem

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 3 Mar 2010 14:07:19 +0100
From:	Linus Walleij <linus.ml.walleij@...il.com>
To:	Dima Zavin <dmitriyz@...gle.com>
Cc:	Jean Delvare <khali@...ux-fr.org>,
	Jonathan Cameron <jic23@....ac.uk>,
	torvalds@...ux-foundation.org, LKML <linux-kernel@...r.kernel.org>,
	Zhang Rui <rui.zhang@...el.com>,
	Amit Kucheria <amit.kucheria@...durent.com>
Subject: Re: [GIT PULL] Ambient Light Sensors subsystem

2010/3/3 Dima Zavin <dmitriyz@...gle.com>:

> there are plenty of
> drivers floating out there from many OEMs/vendors

Bad for them that they didn't work on integrating these to the
mainline kernel and creating proper subsystems for them
earlier.

> that are not ALSs,
> but essentially need a similar interface (e.g. proximity sensor).

I have a proximity sensor driver pending here on top of GPIO,
creating an input-on-top-of-GPIO driver framework. Too much
to do but here is the userspace interface:

diff --git a/include/linux/input.h b/include/linux/input.h
index a5802c9..cbe8a98 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -644,6 +644,7 @@ struct input_absinfo {
 #define SW_RADIO		SW_RFKILL_ALL	/* deprecated */
 #define SW_MICROPHONE_INSERT	0x04  /* set = inserted */
 #define SW_DOCK			0x05  /* set = plugged into dock */
+#define SW_PROXIMITY		0x06  /* set = prox. sensor detects object */
 #define SW_MAX			0x0f
 #define SW_CNT			(SW_MAX+1)

-- 

Comes in through /dev/input/event* something, simple.

I have heard about proximity sensors returning more than a binary
value, do you have one of those?

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