ramips: register watchdog device on the rt305x boards
[openwrt/svn-archive/archive.git] / target / linux / ramips / files / arch / mips / ralink / rt288x / devices.c
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
20 #include <asm/addrspace.h>
21
22 #include <asm/mach-ralink/rt288x.h>
23 #include <asm/mach-ralink/rt288x_regs.h>
24 #include <asm/mach-ralink/ramips_eth_platform.h>
25
26 #include "devices.h"
27
28 static struct resource rt288x_flash0_resources[] = {
29 {
30 .flags = IORESOURCE_MEM,
31 .start = KSEG1ADDR(RT2880_FLASH0_BASE),
32 .end = KSEG1ADDR(RT2880_FLASH0_BASE) +
33 RT2880_FLASH0_SIZE - 1,
34 },
35 };
36
37 static struct platform_device rt288x_flash0_device = {
38 .name = "physmap-flash",
39 .resource = rt288x_flash0_resources,
40 .num_resources = ARRAY_SIZE(rt288x_flash0_resources),
41 };
42
43 static struct resource rt288x_flash1_resources[] = {
44 {
45 .flags = IORESOURCE_MEM,
46 .start = KSEG1ADDR(RT2880_FLASH1_BASE),
47 .end = KSEG1ADDR(RT2880_FLASH1_BASE) +
48 RT2880_FLASH1_SIZE - 1,
49 },
50 };
51
52 static struct platform_device rt288x_flash1_device = {
53 .name = "physmap-flash",
54 .resource = rt288x_flash1_resources,
55 .num_resources = ARRAY_SIZE(rt288x_flash1_resources),
56 };
57
58 static int rt288x_flash_instance __initdata;
59 void __init rt288x_register_flash(unsigned int id,
60 struct physmap_flash_data *pdata)
61 {
62 struct platform_device *pdev;
63 u32 t;
64 int reg;
65
66 switch (id) {
67 case 0:
68 pdev = &rt288x_flash0_device;
69 reg = MEMC_REG_FLASH_CFG0;
70 break;
71 case 1:
72 pdev = &rt288x_flash1_device;
73 reg = MEMC_REG_FLASH_CFG1;
74 break;
75 default:
76 return;
77 }
78
79 t = rt288x_memc_rr(reg);
80 t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
81
82 switch (t) {
83 case FLASH_CFG_WIDTH_8BIT:
84 pdata->width = 1;
85 break;
86 case FLASH_CFG_WIDTH_16BIT:
87 pdata->width = 2;
88 break;
89 case FLASH_CFG_WIDTH_32BIT:
90 pdata->width = 4;
91 break;
92 default:
93 printk(KERN_ERR "RT288x: flash bank%u witdh is invalid\n", id);
94 return;
95 }
96
97 pdev->dev.platform_data = pdata;
98 pdev->id = rt288x_flash_instance;
99
100 platform_device_register(pdev);
101 rt288x_flash_instance++;
102 }
103
104 static struct resource rt288x_wifi_resources[] = {
105 {
106 .start = RT2880_WMAC_BASE,
107 .end = RT2880_WMAC_BASE + 0x3FFFF,
108 .flags = IORESOURCE_MEM,
109 }, {
110 .start = RT288X_CPU_IRQ_WNIC,
111 .end = RT288X_CPU_IRQ_WNIC,
112 .flags = IORESOURCE_IRQ,
113 },
114 };
115
116 static struct platform_device rt288x_wifi_device = {
117 .name = "rt2800_wmac",
118 .resource = rt288x_wifi_resources,
119 .num_resources = ARRAY_SIZE(rt288x_wifi_resources),
120 .dev = {
121 .platform_data = NULL,
122 }
123 };
124
125 void __init rt288x_register_wifi(void)
126 {
127 platform_device_register(&rt288x_wifi_device);
128 }
129
130 static void rt288x_fe_reset(void)
131 {
132 rt288x_sysc_wr(RT2880_RESET_FE, SYSC_REG_RESET_CTRL);
133 }
134
135 static struct resource rt288x_eth_resources[] = {
136 {
137 .start = RT2880_FE_BASE,
138 .end = RT2880_FE_BASE + PAGE_SIZE - 1,
139 .flags = IORESOURCE_MEM,
140 }, {
141 .start = RT288X_CPU_IRQ_FE,
142 .end = RT288X_CPU_IRQ_FE,
143 .flags = IORESOURCE_IRQ,
144 },
145 };
146
147 struct ramips_eth_platform_data rt288x_eth_data;
148 static struct platform_device rt288x_eth_device = {
149 .name = "ramips_eth",
150 .resource = rt288x_eth_resources,
151 .num_resources = ARRAY_SIZE(rt288x_eth_resources),
152 .dev = {
153 .platform_data = &rt288x_eth_data,
154 }
155 };
156
157 void __init rt288x_register_ethernet(void)
158 {
159 struct clk *clk;
160
161 clk = clk_get(NULL, "sys");
162 if (IS_ERR(clk))
163 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
164
165 rt288x_eth_data.sys_freq = clk_get_rate(clk);
166 rt288x_eth_data.reset_fe = rt288x_fe_reset;
167 rt288x_eth_data.min_pkt_len = 64;
168
169 if (!is_valid_ether_addr(rt288x_eth_data.mac))
170 random_ether_addr(rt288x_eth_data.mac);
171
172 platform_device_register(&rt288x_eth_device);
173 }