From: xuemingmin <xuemingmin@126.com>
To: linuxppc-dev@ozlabs.org
Subject: Linux pcf8574 driver based MPC8349EA
Date: Wed, 20 May 2009 22:44:48 +0800 (CST) [thread overview]
Message-ID: <6825098.918711242830688677.JavaMail.coremail@bj126app28.126.com> (raw)
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Recently , I'm busy with a project based on the main board - MPC8349EA. We use a pcf8574 connected I2C bus. Now my task is programming to test I2C bus. I find that file system contains the chip(pcf8574) module .And I add this module into the kernel. But I find that system only registers the driver,not device.And I can not get the device's major and minor device number. Therefore, I can not create the device file to operate the device.
My question:
How can I use the device which is not registered in the system,or can you provide some advices to complete the task.
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reply other threads:[~2009-05-20 15:16 UTC|newest]
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