MIPS: ath25: add UART support

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8242/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/mips/ath25/devices.c b/arch/mips/ath25/devices.c
index 049ab4477954..400419d8e7d9 100644
--- a/arch/mips/ath25/devices.c
+++ b/arch/mips/ath25/devices.c
@@ -1,10 +1,41 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/serial_8250.h>
 #include <asm/bootinfo.h>
 
 #include "devices.h"
+#include "ar5312.h"
+#include "ar2315.h"
 
 const char *get_system_type(void)
 {
 	return "Atheros (unknown)";
 }
+
+void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk)
+{
+	struct uart_port s;
+
+	memset(&s, 0, sizeof(s));
+
+	s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP;
+	s.iotype = UPIO_MEM32;
+	s.irq = irq;
+	s.regshift = 2;
+	s.mapbase = mapbase;
+	s.uartclk = uartclk;
+
+	early_serial_setup(&s);
+}
+
+static int __init ath25_arch_init(void)
+{
+	if (is_ar5312())
+		ar5312_arch_init();
+	else
+		ar2315_arch_init();
+
+	return 0;
+}
+
+arch_initcall(ath25_arch_init);