2 * Ralink RT305x SoC platform device registration
4 * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/platform_device.h>
13 #include <linux/mtd/mtd.h>
14 #include <linux/mtd/physmap.h>
16 #include <asm/addrspace.h>
18 #include <asm/mach-ralink/rt305x.h>
19 #include <asm/mach-ralink/rt305x_regs.h>
22 static struct resource rt305x_flash0_resources[] = {
24 .flags = IORESOURCE_MEM,
25 .start = KSEG1ADDR(RT305X_FLASH0_BASE),
26 .end = KSEG1ADDR(RT305X_FLASH0_BASE) +
27 RT305X_FLASH0_SIZE - 1,
31 static struct platform_device rt305x_flash0_device = {
32 .name = "physmap-flash",
33 .resource = rt305x_flash0_resources,
34 .num_resources = ARRAY_SIZE(rt305x_flash0_resources),
37 static struct resource rt305x_flash1_resources[] = {
39 .flags = IORESOURCE_MEM,
40 .start = KSEG1ADDR(RT305X_FLASH1_BASE),
41 .end = KSEG1ADDR(RT305X_FLASH1_BASE) +
42 RT305X_FLASH1_SIZE - 1,
46 static struct platform_device rt305x_flash1_device = {
47 .name = "physmap-flash",
48 .resource = rt305x_flash1_resources,
49 .num_resources = ARRAY_SIZE(rt305x_flash1_resources),
52 static int rt305x_flash_instance __initdata;
53 void __init rt305x_register_flash(unsigned int id,
54 struct physmap_flash_data *pdata)
56 struct platform_device *pdev;
62 pdev = &rt305x_flash0_device;
63 reg = MEMC_REG_FLASH_CFG0;
66 pdev = &rt305x_flash1_device;
67 reg = MEMC_REG_FLASH_CFG1;
73 t = rt305x_memc_rr(reg);
74 t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
77 case FLASH_CFG_WIDTH_8BIT:
80 case FLASH_CFG_WIDTH_16BIT:
83 case FLASH_CFG_WIDTH_32BIT:
87 printk(KERN_ERR "RT305x: flash bank%u witdh is invalid\n", id);
91 pdev->dev.platform_data = pdata;
92 pdev->id = rt305x_flash_instance;
94 platform_device_register(pdev);
95 rt305x_flash_instance++;