Beispiel #1
0
static int __devinit apbuart_probe(struct of_device *op, const struct of_device_id *match)
{
	struct console co;
	int node;
	int freq_khz;
	int baud_rates[UART_NR];
	unsigned long clk;
	struct device_node *dp = op->node; int v = 0, d = 0; unsigned int addr;
	struct uart_leon_port *port; struct amba_prom_registers *regs; int irq, line, *irqs;
	int *vendor = of_get_property(dp, "vendor", NULL);
	int *device = of_get_property(dp, "device", NULL);
	regs = of_get_property(dp, "reg", NULL);
	irqs = of_get_property(dp, "interrupts", NULL);
	if (vendor)
		v = *vendor;
	if (device)
		d = *device;
	
	if (LEON3_GpTimer_Regs == 0 || irqs == 0 || regs == 0 || !(v == VENDOR_GAISLER && d == GAISLER_APBUART)) {
		return -ENODEV;
	}
	addr = regs->phys_addr ;
	irq = *irqs;
	
	port = kzalloc(sizeof(struct uart_leon_port), GFP_KERNEL);
	if (unlikely(!port))
		return -ENOMEM;

	node = prom_getchild(prom_root_node);
	freq_khz = prom_getint(node, "clock-frequency");
	clk = ((unsigned long)(((LEON3_BYPASS_LOAD_PA(&LEON3_GpTimer_Regs->scalar_reload)) + 1)));
	
	port->port.membase = (void *)addr;
	port->port.mapbase = addr;
	port->port.irq = irq;
	port->port.iotype = SERIAL_IO_MEM;
	port->port.uartclk = clk * 1000 * 1000;
	port->port.fifosize = 1;
	port->port.ops = &leon_pops;
	port->port.flags = ASYNC_BOOT_AUTOCONF;
	port->port.line = line = leon_line_nr++;

	port->port.uartclk = freq_khz * 1000;
	uart_add_one_port(&leon_reg, port);
	uart_set_options(port, &co, line >= UART_NR ? 9600 : baud_rates[line], 'n', 8, 'n');
	port->port.fifosize = apbuart_scan_fifo_size(port, line);
	apbuart_flush_fifo(port);
	
	printk("---------------- Match %d: 0x%x@%d : %s ----------------\n",line,addr, irq,dp->path_component_name);
	return 0;
}
Beispiel #2
0
static int apbuart_probe(struct platform_device *op)
{
	int i;
	struct uart_port *port = NULL;

	for (i = 0; i < grlib_apbuart_port_nr; i++) {
		if (op->dev.of_node == grlib_apbuart_nodes[i])
			break;
	}

	port = &grlib_apbuart_ports[i];
	port->dev = &op->dev;
	port->irq = op->archdata.irqs[0];

	uart_add_one_port(&grlib_apbuart_driver, (struct uart_port *) port);

	apbuart_flush_fifo((struct uart_port *) port);

	printk(KERN_INFO "grlib-apbuart at 0x%llx, irq %d\n",
	       (unsigned long long) port->mapbase, port->irq);
	return 0;
}
Beispiel #3
0
static int __devinit apbuart_probe(struct platform_device *op,
				   const struct of_device_id *match)
{
	int i = -1;
	struct uart_port *port = NULL;

	i = 0;
	for (i = 0; i < grlib_apbuart_port_nr; i++) {
		if (op->dev.of_node == grlib_apbuart_nodes[i])
			break;
	}

	port = &grlib_apbuart_ports[i];
	port->dev = &op->dev;

	uart_add_one_port(&grlib_apbuart_driver, (struct uart_port *) port);

	apbuart_flush_fifo((struct uart_port *) port);

	printk(KERN_INFO "grlib-apbuart at 0x%llx, irq %d\n",
	       (unsigned long long) port->mapbase, port->irq);
	return 0;
}