2 * Ralink RT288x SoC platform device registration
4 * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/platform_device.h>
14 #include <linux/mtd/mtd.h>
15 #include <linux/mtd/physmap.h>
17 #include <asm/addrspace.h>
19 #include <asm/mach-ralink/rt288x.h>
20 #include <asm/mach-ralink/rt288x_regs.h>
21 #include <asm/mach-ralink/platform.h>
23 static struct resource rt288x_flash0_resources
[] = {
25 .flags
= IORESOURCE_MEM
,
26 .start
= KSEG1ADDR(RT2880_FLASH0_BASE
),
27 .end
= KSEG1ADDR(RT2880_FLASH0_BASE
) +
28 RT2880_FLASH0_SIZE
- 1,
32 static struct platform_device rt288x_flash0_device
= {
33 .name
= "physmap-flash",
34 .resource
= rt288x_flash0_resources
,
35 .num_resources
= ARRAY_SIZE(rt288x_flash0_resources
),
38 static struct resource rt288x_flash1_resources
[] = {
40 .flags
= IORESOURCE_MEM
,
41 .start
= KSEG1ADDR(RT2880_FLASH1_BASE
),
42 .end
= KSEG1ADDR(RT2880_FLASH1_BASE
) +
43 RT2880_FLASH1_SIZE
- 1,
47 static struct platform_device rt288x_flash1_device
= {
48 .name
= "physmap-flash",
49 .resource
= rt288x_flash1_resources
,
50 .num_resources
= ARRAY_SIZE(rt288x_flash1_resources
),
53 static int rt288x_flash_instance __initdata
;
54 void __init
rt288x_register_flash(unsigned int id
,
55 struct physmap_flash_data
*pdata
)
57 struct platform_device
*pdev
;
63 pdev
= &rt288x_flash0_device
;
64 reg
= MEMC_REG_FLASH_CFG0
;
67 pdev
= &rt288x_flash1_device
;
68 reg
= MEMC_REG_FLASH_CFG1
;
74 t
= rt288x_memc_rr(reg
);
75 t
= (t
>> FLASH_CFG_WIDTH_SHIFT
) & FLASH_CFG_WIDTH_MASK
;
78 case FLASH_CFG_WIDTH_8BIT
:
81 case FLASH_CFG_WIDTH_16BIT
:
84 case FLASH_CFG_WIDTH_32BIT
:
88 printk(KERN_ERR
"RT288x: flash bank%u witdh is invalid\n", id
);
92 pdev
->dev
.platform_data
= pdata
;
93 pdev
->id
= rt288x_flash_instance
;
95 platform_device_register(pdev
);
96 rt288x_flash_instance
++;