serial: 8250: pxa: add devicetree earlyconsole

Transfer the device-tree pxa uart handling from 8250_of to the new
8250_pxa.  As a corollary, add the early console definition into
8250_pxa.

This enables to have the same uart node for the early console and the
normal uart.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 7a8b5fc..d25ab1c 100644 (file)
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -332,8 +332,6 @@ static const struct of_device_id of_platform_serial_table[] = {
                .data = (void *)PORT_ALTR_16550_F128, },
        { .compatible = "mrvl,mmp-uart",
                .data = (void *)PORT_XSCALE, },
-       { .compatible = "mrvl,pxa-uart",
-               .data = (void *)PORT_XSCALE, },
        { /* end of list */ },
 };
 MODULE_DEVICE_TABLE(of, of_platform_serial_table);

diff --git a/drivers/tty/serial/8250/8250_pxa.c b/drivers/tty/serial/8250/8250_pxa.c
index 6a14df0..3b08f34 100644 (file)
--- a/drivers/tty/serial/8250/8250_pxa.c
+++ b/drivers/tty/serial/8250/8250_pxa.c
@@ -172,6 +172,19 @@ static struct platform_driver serial_pxa_driver = {
 
 module_platform_driver(serial_pxa_driver);
 
+static int __init early_serial_pxa_setup(struct earlycon_device *device,
+                                 const char *options)
+{
+       struct uart_port *port = &device->port;
+
+       if (!(device->port.membase || device->port.iobase))
+               return -ENODEV;
+
+       port->regshift = 2;
+       return early_serial8250_setup(device, NULL);
+}
+OF_EARLYCON_DECLARE(early_pxa, "mrvl,pxa-uart", early_serial_pxa_setup);
+
 MODULE_AUTHOR("Sergei Ianovich");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:pxa2xx-uart");