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path: root/drivers/tty/serial/meson_uart.c
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Diffstat (limited to 'drivers/tty/serial/meson_uart.c')
-rw-r--r--drivers/tty/serial/meson_uart.c42
1 files changed, 35 insertions, 7 deletions
diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 024445aa0..6aea0f4a9 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -481,18 +481,13 @@ static void meson_console_putchar(struct uart_port *port, int ch)
writel(ch, port->membase + AML_UART_WFIFO);
}
-static void meson_serial_console_write(struct console *co, const char *s,
- u_int count)
+static void meson_serial_port_write(struct uart_port *port, const char *s,
+ u_int count)
{
- struct uart_port *port;
unsigned long flags;
int locked;
u32 val, tmp;
- port = meson_ports[co->index];
- if (!port)
- return;
-
local_irq_save(flags);
if (port->sysrq) {
locked = 0;
@@ -516,6 +511,18 @@ static void meson_serial_console_write(struct console *co, const char *s,
local_irq_restore(flags);
}
+static void meson_serial_console_write(struct console *co, const char *s,
+ u_int count)
+{
+ struct uart_port *port;
+
+ port = meson_ports[co->index];
+ if (!port)
+ return;
+
+ meson_serial_port_write(port, s, count);
+}
+
static int meson_serial_console_setup(struct console *co, char *options)
{
struct uart_port *port;
@@ -554,6 +561,27 @@ static int __init meson_serial_console_init(void)
}
console_initcall(meson_serial_console_init);
+static void meson_serial_early_console_write(struct console *co,
+ const char *s,
+ u_int count)
+{
+ struct earlycon_device *dev = co->data;
+
+ meson_serial_port_write(&dev->port, s, count);
+}
+
+static int __init
+meson_serial_early_console_setup(struct earlycon_device *device, const char *opt)
+{
+ if (!device->port.membase)
+ return -ENODEV;
+
+ device->con->write = meson_serial_early_console_write;
+ return 0;
+}
+OF_EARLYCON_DECLARE(meson, "amlogic,meson-uart",
+ meson_serial_early_console_setup);
+
#define MESON_SERIAL_CONSOLE (&meson_serial_console)
#else
#define MESON_SERIAL_CONSOLE NULL