Difference between revisions of "IMX LED Driver TP"
From ArmadeusWiki
(→Howto Load/unload modules) |
(→Howto Load/unload modules : "hwmon" module) |
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| Line 29: | Line 29: | ||
# | # | ||
</pre> | </pre> | ||
| + | To list all mod loaded : | ||
| + | <pre class="apf"> | ||
| + | # lsmod | ||
| + | Module Size Used by Not tainted | ||
| + | hwmon 2356 0 | ||
| + | </pre> | ||
| + | |||
To unload it just type : | To unload it just type : | ||
<pre class="apf"> | <pre class="apf"> | ||
Revision as of 19:43, 17 March 2009
Page under construction...
Informations on this page are not guaranteed !!
Contents
Proposal
The goal of this tutorial is to build from scratch a simple led driver wire on GPIO of the iMX. This document will describes step by step how to implement a such driver
Howto Load/unload modules : "hwmon" module
Load module is quite simple once it is compile an in the rootfs of the apf board. All the compiled driver modules are in the "/lib/modules/<kernel version>/kernel". To find all the loadable modules by the kernel in the board type :
# find /lib/modules/`uname -r`/kernel -name "*.ko" /lib/modules/2.6.27.13/kernel/sound/arm/snd-imx-alsa-tsc2102.ko /lib/modules/2.6.27.13/kernel/sound/arm/snd-mx2.ko /lib/modules/2.6.27.13/kernel/sound/core/snd-page-alloc.ko /lib/modules/2.6.27.13/kernel/sound/core/snd-timer.ko /lib/modules/2.6.27.13/kernel/sound/core/snd.ko /lib/modules/2.6.27.13/kernel/sound/core/snd-pcm.ko /lib/modules/2.6.27.13/kernel/sound/soundcore.ko /lib/modules/2.6.27.13/kernel/drivers/spi/tsc2102.ko /lib/modules/2.6.27.13/kernel/drivers/scsi/scsi_wait_scan.ko /lib/modules/2.6.27.13/kernel/drivers/hwmon/hwmon.ko /lib/modules/2.6.27.13/kernel/drivers/input/touchscreen/tsc2102_ts.ko /lib/modules/2.6.27.13/kernel/drivers/video/backlight/lcd.ko /lib/modules/2.6.27.13/kernel/drivers/video/backlight/backlight.ko /lib/modules/2.6.27.13/kernel/drivers/armadeus/max1027/max1027.ko /lib/modules/2.6.27.13/kernel/drivers/armadeus/backlight/imx_bl.ko
For example, I will load "/lib/modules/2.6.27.13/kernel/drivers/hwmon/hwmon.ko" module :
# modprobe hwmon #
To list all mod loaded :
# lsmod Module Size Used by Not tainted hwmon 2356 0
To unload it just type :
# rmmod hwmon #
TBC
