1/*
2 *  Ralink RT288x SoC platform device registration
3 *
4 *  Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
5 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
6 *
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.
10 */
11
12#include <linux/kernel.h>
13#include <linux/platform_device.h>
14#include <linux/mtd/mtd.h>
15#include <linux/mtd/physmap.h>
16#include <linux/etherdevice.h>
17#include <linux/err.h>
18#include <linux/clk.h>
19#include <linux/rt2x00_platform.h>
20
21#include <asm/addrspace.h>
22
23#include <asm/mach-ralink/rt288x.h>
24#include <asm/mach-ralink/rt288x_regs.h>
25#include <asm/mach-ralink/ramips_eth_platform.h>
26
27#include "devices.h"
28
29static struct resource rt288x_flash0_resources[] = {
30	{
31		.flags	= IORESOURCE_MEM,
32		.start	= KSEG1ADDR(RT2880_FLASH0_BASE),
33		.end	= KSEG1ADDR(RT2880_FLASH0_BASE) +
34			  RT2880_FLASH0_SIZE - 1,
35	},
36};
37
38struct physmap_flash_data rt288x_flash0_data;
39static struct platform_device rt288x_flash0_device = {
40	.name		= "physmap-flash",
41	.resource	= rt288x_flash0_resources,
42	.num_resources	= ARRAY_SIZE(rt288x_flash0_resources),
43	.dev = {
44		.platform_data = &rt288x_flash0_data,
45	},
46};
47
48static struct resource rt288x_flash1_resources[] = {
49	{
50		.flags	= IORESOURCE_MEM,
51		.start	= KSEG1ADDR(RT2880_FLASH1_BASE),
52		.end	= KSEG1ADDR(RT2880_FLASH1_BASE) +
53			  RT2880_FLASH1_SIZE - 1,
54	},
55};
56
57struct physmap_flash_data rt288x_flash1_data;
58static struct platform_device rt288x_flash1_device = {
59	.name		= "physmap-flash",
60	.resource	= rt288x_flash1_resources,
61	.num_resources	= ARRAY_SIZE(rt288x_flash1_resources),
62	.dev = {
63		.platform_data = &rt288x_flash1_data,
64	},
65};
66
67static int rt288x_flash_instance __initdata;
68void __init rt288x_register_flash(unsigned int id)
69{
70	struct platform_device *pdev;
71	struct physmap_flash_data *pdata;
72	u32 t;
73	int reg;
74
75	switch (id) {
76	case 0:
77		pdev = &rt288x_flash0_device;
78		reg = MEMC_REG_FLASH_CFG0;
79		break;
80	case 1:
81		pdev = &rt288x_flash1_device;
82		reg = MEMC_REG_FLASH_CFG1;
83		break;
84	default:
85		return;
86	}
87
88	t = rt288x_memc_rr(reg);
89	t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
90
91	pdata = pdev->dev.platform_data;
92	switch (t) {
93	case FLASH_CFG_WIDTH_8BIT:
94		pdata->width = 1;
95		break;
96	case FLASH_CFG_WIDTH_16BIT:
97		pdata->width = 2;
98		break;
99	case FLASH_CFG_WIDTH_32BIT:
100		pdata->width = 4;
101		break;
102	default:
103		printk(KERN_ERR "RT288x: flash bank%u witdh is invalid\n", id);
104		return;
105	}
106
107	pdev->id = rt288x_flash_instance;
108
109	platform_device_register(pdev);
110	rt288x_flash_instance++;
111}
112
113static struct resource rt288x_wifi_resources[] = {
114	{
115		.start	= RT2880_WMAC_BASE,
116		.end	= RT2880_WMAC_BASE + 0x3FFFF,
117		.flags	= IORESOURCE_MEM,
118	}, {
119		.start	= RT288X_CPU_IRQ_WNIC,
120		.end	= RT288X_CPU_IRQ_WNIC,
121		.flags	= IORESOURCE_IRQ,
122	},
123};
124
125static struct rt2x00_platform_data rt288x_wifi_data;
126static struct platform_device rt288x_wifi_device = {
127	.name			= "rt2800_wmac",
128	.resource		= rt288x_wifi_resources,
129	.num_resources	= ARRAY_SIZE(rt288x_wifi_resources),
130	.dev = {
131		.platform_data = &rt288x_wifi_data,
132	}
133};
134
135void __init rt288x_register_wifi(void)
136{
137	rt288x_wifi_data.eeprom_file_name = "RT288X.eeprom";
138	platform_device_register(&rt288x_wifi_device);
139}
140
141static void rt288x_fe_reset(void)
142{
143	rt288x_sysc_wr(RT2880_RESET_FE, SYSC_REG_RESET_CTRL);
144}
145
146static struct resource rt288x_eth_resources[] = {
147	{
148		.start	= RT2880_FE_BASE,
149		.end	= RT2880_FE_BASE + PAGE_SIZE - 1,
150		.flags	= IORESOURCE_MEM,
151	}, {
152		.start	= RT288X_CPU_IRQ_FE,
153		.end	= RT288X_CPU_IRQ_FE,
154		.flags	= IORESOURCE_IRQ,
155	},
156};
157
158struct ramips_eth_platform_data rt288x_eth_data;
159static struct platform_device rt288x_eth_device = {
160	.name		= "ramips_eth",
161	.resource	= rt288x_eth_resources,
162	.num_resources	= ARRAY_SIZE(rt288x_eth_resources),
163	.dev = {
164		.platform_data = &rt288x_eth_data,
165	}
166};
167
168void __init rt288x_register_ethernet(void)
169{
170	struct clk *clk;
171
172	clk = clk_get(NULL, "sys");
173	if (IS_ERR(clk))
174		panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
175
176	rt288x_eth_data.sys_freq = clk_get_rate(clk);
177	rt288x_eth_data.reset_fe = rt288x_fe_reset;
178	rt288x_eth_data.min_pkt_len = 64;
179
180	if (!is_valid_ether_addr(rt288x_eth_data.mac))
181		random_ether_addr(rt288x_eth_data.mac);
182
183	platform_device_register(&rt288x_eth_device);
184}
185
186static struct resource rt288x_wdt_resources[] = {
187	{
188		.start	= RT2880_TIMER_BASE,
189		.end	= RT2880_TIMER_BASE + RT2880_TIMER_SIZE - 1,
190		.flags	= IORESOURCE_MEM,
191	},
192};
193
194static struct platform_device rt288x_wdt_device = {
195	.name		= "ramips-wdt",
196	.id		= -1,
197	.resource	= rt288x_wdt_resources,
198	.num_resources	= ARRAY_SIZE(rt288x_wdt_resources),
199};
200
201void __init rt288x_register_wdt(void)
202{
203	u32 t;
204
205	/* enable WDT reset output on pin SRAM_CS_N */
206	t = rt288x_sysc_rr(SYSC_REG_CLKCFG);
207	t |= CLKCFG_SRAM_CS_N_WDT;
208	rt288x_sysc_wr(t, SYSC_REG_CLKCFG);
209
210	platform_device_register(&rt288x_wdt_device);
211}
212