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/*
* Ralink RT288x SoC platform device registration
*
* Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* 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/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/physmap.h>
#include <asm/addrspace.h>
#include <asm/mach-ralink/rt288x.h>
#include <asm/mach-ralink/rt288x_regs.h>
#include <asm/mach-ralink/platform.h>
static struct resource rt288x_flash0_resources[] = {
{
.flags = IORESOURCE_MEM,
.start = KSEG1ADDR(RT2880_FLASH0_BASE),
.end = KSEG1ADDR(RT2880_FLASH0_BASE) +
RT2880_FLASH0_SIZE - 1,
},
};
static struct platform_device rt288x_flash0_device = {
.name = "physmap-flash",
.resource = rt288x_flash0_resources,
.num_resources = ARRAY_SIZE(rt288x_flash0_resources),
};
static struct resource rt288x_flash1_resources[] = {
{
.flags = IORESOURCE_MEM,
.start = KSEG1ADDR(RT2880_FLASH1_BASE),
.end = KSEG1ADDR(RT2880_FLASH1_BASE) +
RT2880_FLASH1_SIZE - 1,
},
};
static struct platform_device rt288x_flash1_device = {
.name = "physmap-flash",
.resource = rt288x_flash1_resources,
.num_resources = ARRAY_SIZE(rt288x_flash1_resources),
};
static int rt288x_flash_instance __initdata;
void __init rt288x_register_flash(unsigned int id,
struct physmap_flash_data *pdata)
{
struct platform_device *pdev;
u32 t;
int reg;
switch (id) {
case 0:
pdev = &rt288x_flash0_device;
reg = MEMC_REG_FLASH_CFG0;
break;
case 1:
pdev = &rt288x_flash1_device;
reg = MEMC_REG_FLASH_CFG1;
break;
default:
return;
}
t = rt288x_memc_rr(reg);
t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
switch (t) {
case FLASH_CFG_WIDTH_8BIT:
pdata->width = 1;
break;
case FLASH_CFG_WIDTH_16BIT:
pdata->width = 2;
break;
case FLASH_CFG_WIDTH_32BIT:
pdata->width = 4;
break;
default:
printk(KERN_ERR "RT288x: flash bank%u witdh is invalid\n", id);
return;
}
pdev->dev.platform_data = pdata;
pdev->id = rt288x_flash_instance;
platform_device_register(pdev);
rt288x_flash_instance++;
}
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