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Message-ID: <20141116101248.GA32483@amd> Date: Sun, 16 Nov 2014 11:12:48 +0100 From: Pavel Machek <pavel@....cz> To: Aaro Koskinen <aaro.koskinen@....fi> Cc: Tony Lindgren <tony@...mide.com>, Sebastian Reichel <sre@...nel.org>, Pali Roh?r <pali.rohar@...il.com>, kernel list <linux-kernel@...r.kernel.org>, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, linux-omap@...r.kernel.org, khilman@...nel.org, freemangordon@....bg Subject: Re: N900 modem support in 3.18-rc1 On Thu 2014-11-13 20:18:04, Aaro Koskinen wrote: > Hi, > > On Thu, Nov 13, 2014 at 09:45:36AM -0800, Tony Lindgren wrote: > > * Pavel Machek <pavel@....cz> [141113 08:23]: > > > OTOH ofono seems pretty reasonable. So I played a bit, and result > > > is python/pygtk gui which can receive an sms, initiate a call, and > > > report missed call. If someone wants to play, source is at > > > > > > https://gitorious.org/tui/tui/source/b6141107e9341a1412720aed4b0d09143dfa2f4e:ofone > > > > Pavel, care to fill in the the following type patch with some > > instructions in the description now that you got it working? > > Could we even have some "permanent" instructions under Documentation/? Something like this? commit 375d8d9f17433ade6afae91d4f34e170f0af04c4 Author: Pavel <pavel@....cz> Date: Sun Nov 16 11:10:59 2014 +0100 Add basic documentation for n900 testing. Signed-off-by: Pavel Machek <pavel@....cz> diff --git a/Documentation/cellphones.txt b/Documentation/cellphones.txt new file mode 100644 index 0000000..d7e8e7a --- /dev/null +++ b/Documentation/cellphones.txt @@ -0,0 +1,90 @@ +Running Linux on Cellphones +=========================== + +At this moment (2014), there are no cellphones completely supported by +mainline kernel. Another problem is lack of hackable userspace to run +on cellphone, even when kernel support is available. + +Openmoko was first phone running Linux with X. GSM support there was +based on freesmartphone.org daemons. + +Sony has project to merge kernel support for Xperia Z1. + +Nokia N900 +---------- + +Nokia N900 orignally shipped with Maemo-based userland, which is close +enough to GNU/X/apt based Linux; key components communicate using dbus +and application can be written in pygtk. Kernel patches were +relatively clean, and the core stuff is merged, unfortunately there's +quite a lot of non-core stuff and pieces of userland are closed +source; including some critical support such as bridge between CPU and +modem for voice calls. + +Unfortunately, that means that kernel development is hard, because it +is non-trivial to test all the various devices in the phone due to +lack of suitable userspace and userspace development is hard, because +there's no suitable kernel to work with. + +Here are instructions for getting usable userspace for kernel testing, +and suggestions for some tests. Setting up nfsroot (needs non-mainline +patch) is strongly recommended for development. + +I'm using Debian 7 for testing/development. It works well including +touchscreen and X support, as of 3.18-rc1. Instructions are here: + +https://wiki.debian.org/n900-wheezy-armhf +https://wiki.debian.org/MaemoAndSqueeze + +Following packages are useful on N900: + +libts-bin evtest ntpdate module-init-tools udev netbase ifupdown openssh-server +locales whiptail less mpg123 mplayer ofono gcc strace mdbus2 + +This calibrates display to usable state on recent kernel and Debian 7: + +DISPLAY=:0.0 xinput --set-prop --type=float 8 115 1.10 0.00 -0.05 0.00 1.18 -0.10 0.00 0.00 1.00 +DISPLAY=:0.0 xinput --set-prop --type=int 8 249 0 1 + +# Test vibrations +echo 5 | fftest /dev/input/event2 + +# Test LEDs +VAL=30 +echo $VAL > lp5523\:kb1/brightness +echo $VAL > lp5523\:kb1/brightness +echo $VAL > lp5523\:kb2/brightness +echo $VAL > lp5523\:kb3/brightness +echo $VAL > lp5523\:kb4/brightness +echo $VAL > lp5523\:kb5/brightness +echo $VAL > lp5523\:kb6/brightness +echo $VAL > lp5523\:r/brightness +echo $VAL > lp5523\:g/brightness +echo $VAL > lp5523\:b/brightness +echo 100 > /sys/class/backlight/acx565akm/brightness +echo mem > /sys/power/state + +# Display battery/charging state +cd /sys/bus/i2c/drivers/bq27x00-battery/2-0055/power_supply/bq27200-0 +grep -r . . + +# Start up ofono in debug mode +rmdir /dev/cmt +ln -s /sys/bus/hsi/devices/n900-modem/ /dev/cmt +killall ofonod +sleep .1 +ofonod --nodetach --debug & + +# Test modem works +# enable the modem +mdbus2 -s org.ofono /n900_0 org.ofono.Modem.SetProperty Powered true +# enable modem's RF parts +mdbus2 -s org.ofono /n900_0 org.ofono.Modem.SetProperty Online true +# scan for available networks (takes some time) +mdbus2 -s org.ofono /n900_0 org.ofono.NetworkRegistration.Scan + + + Good luck! + + 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 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/
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