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添加驱动之后,看不到设备.



root@dm368-evm:/opt/bin# insmod px223.ko
gpio_dir = 0xffffffff
gpio_dir = 0xfeffffff
gpio_out = 0x0
gpio_out = 0x1000000
px223 probe.
Add px223 I2C client.
*
12 : 101.
13 : 192.
14 : 0.
make node for GPIO with 'mknod /dev/pio c 301 0'

这个是insmod时候代码,怎么我查看/dev下,没有这个设备呢?