1 files changed, 69 insertions, 0 deletions

diff --git a/arch/arm/mach-pnx4008/serial.c b/arch/arm/mach-pnx4008/serial.c
new file mode 100644
index 000000000000..2e1e04cc048c
--- /dev/null
+++ b/arch/arm/mach-pnx4008/serial.c
@@ -0,0 +1,69 @@
+/*
+ *  linux/arch/arm/mach-pnx4008/serial.c
+ *
+ *  PNX4008 UART initialization
+ *
+ *  Copyright:  MontaVista Software Inc. (c) 2005
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+
+#include <asm/arch/platform.h>
+#include <asm/arch/hardware.h>
+
+#include <linux/serial_core.h>
+#include <linux/serial_reg.h>
+#include <asm/arch/pm.h>
+
+#include <asm/arch/clock.h>
+
+#define UART_3          0
+#define UART_4          1
+#define UART_5          2
+#define UART_6          3
+#define UART_UNKNOWN    (-1)
+
+#define UART3_BASE_VA   IO_ADDRESS(PNX4008_UART3_BASE)
+#define UART4_BASE_VA   IO_ADDRESS(PNX4008_UART4_BASE)
+#define UART5_BASE_VA   IO_ADDRESS(PNX4008_UART5_BASE)
+#define UART6_BASE_VA   IO_ADDRESS(PNX4008_UART6_BASE)
+
+#define UART_FCR_OFFSET         8
+#define UART_FIFO_SIZE          64
+
+void pnx4008_uart_init(void)
+{
+        u32 tmp;
+        int i = UART_FIFO_SIZE;
+
+        __raw_writel(0xC1, UART5_BASE_VA + UART_FCR_OFFSET);
+        __raw_writel(0xC1, UART3_BASE_VA + UART_FCR_OFFSET);
+
+        /* Send a NULL to fix the UART HW bug */
+        __raw_writel(0x00, UART5_BASE_VA);
+        __raw_writel(0x00, UART3_BASE_VA);
+
+        while (i--) {
+                tmp = __raw_readl(UART5_BASE_VA);
+                tmp = __raw_readl(UART3_BASE_VA);
+        }
+        __raw_writel(0, UART5_BASE_VA + UART_FCR_OFFSET);
+        __raw_writel(0, UART3_BASE_VA + UART_FCR_OFFSET);
+
+        /* setup wakeup interrupt */
+        start_int_set_rising_edge(SE_U3_RX_INT);
+        start_int_ack(SE_U3_RX_INT);
+        start_int_umask(SE_U3_RX_INT);
+
+        start_int_set_rising_edge(SE_U5_RX_INT);
+        start_int_ack(SE_U5_RX_INT);
+        start_int_umask(SE_U5_RX_INT);
+}
+