forked from Minki/linux
7ec80ddf04
Add Nuvoton W90X900 ARM9 plat support to linux arm tree, Now, this patch include only W90P910 EVB of W90P910 CPU, Its driver is nothing. Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/*
|
|
* linux/arch/arm/mach-w90x900/w90p910.c
|
|
*
|
|
* Based on linux/arch/arm/plat-s3c24xx/s3c244x.c by Ben Dooks
|
|
*
|
|
* Copyright (c) 2008 Nuvoton technology corporation
|
|
* All rights reserved.
|
|
*
|
|
* Wan ZongShun <mcuos.com@gmail.com>
|
|
*
|
|
* W90P910 cpu support
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/list.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/irq.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/regs-serial.h>
|
|
|
|
#include "cpu.h"
|
|
|
|
/*W90P910 has five uarts*/
|
|
|
|
#define MAX_UART_COUNT 5
|
|
static int uart_count;
|
|
static struct platform_device *uart_devs[MAX_UART_COUNT-1];
|
|
|
|
/* Initial IO mappings */
|
|
|
|
static struct map_desc w90p910_iodesc[] __initdata = {
|
|
IODESC_ENT(IRQ),
|
|
IODESC_ENT(GCR),
|
|
IODESC_ENT(UART),
|
|
IODESC_ENT(TIMER),
|
|
IODESC_ENT(EBI),
|
|
/*IODESC_ENT(LCD),*/
|
|
};
|
|
|
|
/*Init the dev resource*/
|
|
|
|
static W90X900_RES(UART0);
|
|
static W90X900_RES(UART1);
|
|
static W90X900_RES(UART2);
|
|
static W90X900_RES(UART3);
|
|
static W90X900_RES(UART4);
|
|
static W90X900_DEVICE(uart0, UART0, 0, "w90x900-uart");
|
|
static W90X900_DEVICE(uart1, UART1, 1, "w90x900-uart");
|
|
static W90X900_DEVICE(uart2, UART2, 2, "w90x900-uart");
|
|
static W90X900_DEVICE(uart3, UART3, 3, "w90x900-uart");
|
|
static W90X900_DEVICE(uart4, UART4, 4, "w90x900-uart");
|
|
|
|
static struct platform_device *uart_devices[] __initdata = {
|
|
&w90x900_uart0,
|
|
&w90x900_uart1,
|
|
&w90x900_uart2,
|
|
&w90x900_uart3,
|
|
&w90x900_uart4
|
|
};
|
|
|
|
/*Init W90P910 uart device*/
|
|
|
|
void __init w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no)
|
|
{
|
|
struct platform_device *platdev;
|
|
int uart, uartdev;
|
|
|
|
/*By min() to judge count of uart be used indeed*/
|
|
|
|
uartdev = ARRAY_SIZE(uart_devices);
|
|
no = min(uartdev, no);
|
|
|
|
for (uart = 0; uart < no; uart++, cfg++) {
|
|
if (cfg->hwport != uart)
|
|
printk(KERN_ERR "w90x900_uartcfg[%d] error\n", uart);
|
|
platdev = uart_devices[cfg->hwport];
|
|
uart_devs[uart] = platdev;
|
|
platdev->dev.platform_data = cfg;
|
|
}
|
|
uart_count = uart;
|
|
}
|
|
|
|
/*Init W90P910 evb io*/
|
|
|
|
void __init w90p910_map_io(struct map_desc *mach_desc, int mach_size)
|
|
{
|
|
unsigned long idcode = 0x0;
|
|
|
|
iotable_init(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc));
|
|
|
|
idcode = __raw_readl(W90X900PDID);
|
|
if (idcode != W90P910_CPUID)
|
|
printk(KERN_ERR "CPU type 0x%08lx is not W90P910\n", idcode);
|
|
}
|
|
|
|
/*Init W90P910 clock*/
|
|
|
|
void __init w90p910_init_clocks(int xtal)
|
|
{
|
|
}
|
|
|
|
static int __init w90p910_init_cpu(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int __init w90x900_arch_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = w90p910_init_cpu();
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
return platform_add_devices(uart_devs, uart_count);
|
|
|
|
}
|
|
arch_initcall(w90x900_arch_init);
|