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/*
* Copyright 2006, Realtek Semiconductor Corp.
*
* arch/rlx/rlxocp/serial.c
* RTL819xD serial port initialization
*
* Tony Wu (tonywu@realtek.com.tw)
* Nov. 07, 2006
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/string.h>
#include <asm/serial.h>
#include "bspchip.h"
void __init bsp_serial_init(void)
{
#ifdef CONFIG_SERIAL_SC16IS7X0
extern void __init sc16is7x0_get_port( struct uart_port *port );
#endif
#if defined( CONFIG_SERIAL_SC16IS7X0 ) || defined( CONFIG_SERIAL_RTL8198_UART1 )
unsigned int line = 0;
#else
const unsigned int line = 0;
#endif
struct uart_port s;
/* clear memory */
memset(&s, 0, sizeof(s));
/*
* UART0
*/
s.line = line;
s.type = PORT_16550A;
s.irq = BSP_UART0_IRQ;
s.iotype = UPIO_MEM;
s.regshift = 2;
#if 1
s.uartclk = BSP_SYS_CLK_RATE;
s.fifosize = 16;
//s.flags = UPF_SKIP_TEST | UPF_LOW_LATENCY;
s.flags = UPF_SKIP_TEST;
s.mapbase = BSP_UART0_MAP_BASE;
//s.membase = ioremap_nocache(s.mapbase, BSP_UART0_MAPSIZE);
s.membase = ioremap_nocache(s.mapbase, 0x20);
#else
s.uartclk = BSP_SYS_CLK_RATE - BSP_BAUDRATE * 24; //???
s.fifosize = 1; //???
s.flags = UPF_SKIP_TEST | UPF_LOW_LATENCY | UPF_SPD_CUST;
s.membase = (unsigned char *)BSP_UART0_BASE;
s.custom_divisor = BSP_SYS_CLK_RATE / (BSP_BAUDRATE * 16) - 1;
#endif
if (early_serial_setup(&s) != 0) {
panic("RTL819xD: bsp_serial_init failed!");
}
#ifdef CONFIG_SERIAL_RTL8198_UART1
// UART1
#define UART_BASE 0xB8000100 //0xb8002100 uart 1
#define REG32(reg) (*(volatile unsigned int *)(reg))
REG32(0xb8000040)= (REG32(0xb8000040) & ~(0x3<<3)) | (0x01<<3); //pin mux to UART1
REG32(0xb8002110) |= (1<<29); //enable flow control
s.line = ++ line;
s.irq = BSP_UART1_IRQ;
s.mapbase = BSP_UART1_MAP_BASE;
s.membase = ioremap_nocache(s.mapbase, 0x20);
if (early_serial_setup(&s) != 0) {
panic("RTL819xD: bsp_serial_init UART1 failed!");
}
#endif
#ifdef CONFIG_SERIAL_SC16IS7X0
sc16is7x0_get_port( &s );
s.line = ++ line;
if (early_serial_setup(&s) != 0) {
panic("RTL819xD: bsp_serial_init i2c uart failed!");
}
#endif
}
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