linux/arch/arm/mach-pnx4008/serial.c
Vitaly Wool b741483d7d [ARM] 3623/1: pnx4008: move GPIO-related defines to gpio.h
Patch from Vitaly Wool

This patch moves GPIO-related defines and static inline funcs from include/asm-arm/arch-pnx4008/pm.h to include/asm-arm/arch-pnx4008/gpio.h.
Also, some more GPIO-related defines are added to include/asm-arm/arch-pnx4008/gpio.h as they are needed for the USB host driver (coming soon...)

Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-22 10:26:21 +01:00

70 lines
1.6 KiB
C

/*
* 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/hardware.h>
#include <linux/serial_core.h>
#include <linux/serial_reg.h>
#include <asm/arch/gpio.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);
}