void __init dt_uart_init(void)
{
struct dt_device_node *dev;
int ret;
const char *devpath = opt_dtuart;
char *options;
if ( !console_has("dtuart") )
return; /* Not for us */
if ( !strcmp(opt_dtuart, "") )
{
const struct dt_device_node *chosen = dt_find_node_by_path("/chosen");
if ( chosen )
{
const char *stdout;
ret = dt_property_read_string(chosen, "stdout-path", &stdout);
if ( ret >= 0 )
{
printk("Taking dtuart configuration from /chosen/stdout-path\n");
if ( strlcpy(opt_dtuart, stdout, sizeof(opt_dtuart))
>= sizeof(opt_dtuart) )
printk("WARNING: /chosen/stdout-path too long, truncated\n");
}
else if ( ret != -EINVAL /* Not present */ )
printk("Failed to read /chosen/stdout-path (%d)\n", ret);
}
}
if ( !strcmp(opt_dtuart, "") )
{
printk("No dtuart path configured\n");
return;
}
options = strchr(opt_dtuart, ':');
if ( options != NULL )
*(options++) = '\0';
else
options = "";
printk("Looking for dtuart at \"%s\", options \"%s\"\n", devpath, options);
if ( *devpath == '/' )
dev = dt_find_node_by_path(devpath);
else
dev = dt_find_node_by_alias(devpath);
if ( !dev )
{
printk("Unable to find device \"%s\"\n", devpath);
return;
}
ret = device_init(dev, DEVICE_SERIAL, options);
if ( ret )
printk("Unable to initialize dtuart: %d\n", ret);
}
void __init dt_uart_init(void)
{
struct dt_device_node *dev;
int ret;
const char *devalias = opt_dtuart;
char *options;
if ( !console_has("dtuart") || !strcmp(opt_dtuart, "") )
{
early_printk("No console\n");
return;
}
options = strchr(opt_dtuart, ',');
if ( options != NULL )
*(options++) = '\0';
else
options = "";
early_printk("Looking for UART console %s\n", devalias);
dev = dt_find_node_by_alias(devalias);
if ( !dev )
{
early_printk("Unable to find device \"%s\"\n", devalias);
return;
}
ret = device_init(dev, DEVICE_SERIAL, options);
if ( ret )
early_printk("Unable to initialize serial: %d\n", ret);
}
