I have written a simple UART serial driver in embedded Linux running
busybox with mdev rules. I have provided .dev_name as "ttyC2C" in my driver
code.
static struct uart_driver serial_omap_reg = {
.owner = THIS_MODULE,
.driver_name = "Omap-C2C-Serial",
.dev_name = "ttyC2C",
.nr = OMAP_MAX_HSUART_PORTS,
.cons = NULL,
};
However the node is getting created in
./sys/devices/platform/omap_c2c_uart.0/tty/ttyC2C0
./sys/class/tty/ttyC2C0
/ # ls -l ./sys/class/tty/ttyC2C0
lrwxrwxrwx 1 root 0 0 Jan 1 00:14
./sys/class/tty/ttyC2C0 ->
../../devices/platform/omap_c2c_uart.0/tty/ttyC2C0
/ # ls -l ./sys/devices/platform/omap_c2c_uart.0/tty/ttyC2C0
-r--r--r-- 1 root 0 4096 Jan 1 00:14 dev
lrwxrwxrwx 1 root 0 0 Jan 1 00:14 device ->
../../../omap_c2c_uart.0
drwxr-xr-x 2 root 0 0 Jan 1 00:14 power
lrwxrwxrwx 1 root 0 0 Jan 1 00:14 subsystem ->
../../../../../class/tty
-rw-r--r-- 1 root 0 4096 Jan 1 00:14 uevent
/ #
The mdev rules for tty are:
tty 0:5 0666
tty.* 0:0 0620
How to get device node as /dev/ttyC2C ?
--
Manavendra Nath Manav
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