ramips: implement clock API for RT305X
[openwrt/svn-archive/archive.git] / target / linux / ramips / files / arch / mips / ralink / rt305x / devices.c
1 /*
2 * Ralink RT305x SoC platform device registration
3 *
4 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
5 *
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.
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/platform_device.h>
13 #include <linux/err.h>
14 #include <linux/clk.h>
15 #include <linux/mtd/mtd.h>
16 #include <linux/mtd/physmap.h>
17
18 #include <asm/addrspace.h>
19
20 #include <asm/mach-ralink/rt305x.h>
21 #include <asm/mach-ralink/rt305x_regs.h>
22 #include "devices.h"
23
24 #include <ramips_eth_platform.h>
25
26 static struct resource rt305x_flash0_resources[] = {
27 {
28 .flags = IORESOURCE_MEM,
29 .start = KSEG1ADDR(RT305X_FLASH0_BASE),
30 .end = KSEG1ADDR(RT305X_FLASH0_BASE) +
31 RT305X_FLASH0_SIZE - 1,
32 },
33 };
34
35 static struct platform_device rt305x_flash0_device = {
36 .name = "physmap-flash",
37 .resource = rt305x_flash0_resources,
38 .num_resources = ARRAY_SIZE(rt305x_flash0_resources),
39 };
40
41 static struct resource rt305x_flash1_resources[] = {
42 {
43 .flags = IORESOURCE_MEM,
44 .start = KSEG1ADDR(RT305X_FLASH1_BASE),
45 .end = KSEG1ADDR(RT305X_FLASH1_BASE) +
46 RT305X_FLASH1_SIZE - 1,
47 },
48 };
49
50 static struct platform_device rt305x_flash1_device = {
51 .name = "physmap-flash",
52 .resource = rt305x_flash1_resources,
53 .num_resources = ARRAY_SIZE(rt305x_flash1_resources),
54 };
55
56 static int rt305x_flash_instance __initdata;
57 void __init rt305x_register_flash(unsigned int id,
58 struct physmap_flash_data *pdata)
59 {
60 struct platform_device *pdev;
61 u32 t;
62 int reg;
63
64 switch (id) {
65 case 0:
66 pdev = &rt305x_flash0_device;
67 reg = MEMC_REG_FLASH_CFG0;
68 break;
69 case 1:
70 pdev = &rt305x_flash1_device;
71 reg = MEMC_REG_FLASH_CFG1;
72 break;
73 default:
74 return;
75 }
76
77 t = rt305x_memc_rr(reg);
78 t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
79
80 switch (t) {
81 case FLASH_CFG_WIDTH_8BIT:
82 pdata->width = 1;
83 break;
84 case FLASH_CFG_WIDTH_16BIT:
85 pdata->width = 2;
86 break;
87 case FLASH_CFG_WIDTH_32BIT:
88 pdata->width = 4;
89 break;
90 default:
91 printk(KERN_ERR "RT305x: flash bank%u witdh is invalid\n", id);
92 return;
93 }
94
95 pdev->dev.platform_data = pdata;
96 pdev->id = rt305x_flash_instance;
97
98 platform_device_register(pdev);
99 rt305x_flash_instance++;
100 }
101
102 static void rt305x_fe_reset(void)
103 {
104 rt305x_sysc_wr(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
105 rt305x_sysc_wr(0, SYSC_REG_RESET_CTRL);
106 }
107
108 static struct resource rt305x_eth_resources[] = {
109 {
110 .start = RT305X_FE_BASE,
111 .end = RT305X_FE_BASE + PAGE_SIZE - 1,
112 .flags = IORESOURCE_MEM,
113 }, {
114 .start = RT305X_CPU_IRQ_FE,
115 .end = RT305X_CPU_IRQ_FE,
116 .flags = IORESOURCE_IRQ,
117 },
118 };
119
120 static struct ramips_eth_platform_data ramips_eth_data = {
121 .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
122 .reset_fe = rt305x_fe_reset,
123 .min_pkt_len = 64,
124 };
125
126 static struct platform_device rt305x_eth_device = {
127 .name = "ramips_eth",
128 .resource = rt305x_eth_resources,
129 .num_resources = ARRAY_SIZE(rt305x_eth_resources),
130 .dev = {
131 .platform_data = &ramips_eth_data,
132 }
133 };
134
135 static struct resource rt305x_esw_resources[] = {
136 {
137 .start = RT305X_SWITCH_BASE,
138 .end = RT305X_SWITCH_BASE + PAGE_SIZE - 1,
139 .flags = IORESOURCE_MEM,
140 },
141 };
142
143 struct rt305x_esw_platform_data rt305x_esw_data;
144 static struct platform_device rt305x_esw_device = {
145 .name = "rt305x-esw",
146 .resource = rt305x_esw_resources,
147 .num_resources = ARRAY_SIZE(rt305x_esw_resources),
148 .dev = {
149 .platform_data = &rt305x_esw_data,
150 }
151 };
152
153 void __init rt305x_register_ethernet(void)
154 {
155 struct clk *clk;
156
157 clk = clk_get(NULL, "sys");
158 if (IS_ERR(clk))
159 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
160
161 ramips_eth_data.sys_freq = clk_get_rate(clk);
162
163 platform_device_register(&rt305x_esw_device);
164 platform_device_register(&rt305x_eth_device);
165 }
166
167 static struct resource rt305x_wifi_resources[] = {
168 {
169 .start = RT305X_WMAC_BASE,
170 .end = RT305X_WMAC_BASE + 0x3FFFF,
171 .flags = IORESOURCE_MEM,
172 }, {
173 .start = RT305X_CPU_IRQ_WNIC,
174 .end = RT305X_CPU_IRQ_WNIC,
175 .flags = IORESOURCE_IRQ,
176 },
177 };
178
179 static struct platform_device rt305x_wifi_device = {
180 .name = "rt2800_wmac",
181 .resource = rt305x_wifi_resources,
182 .num_resources = ARRAY_SIZE(rt305x_wifi_resources),
183 .dev = {
184 .platform_data = NULL,
185 }
186 };
187
188 void __init rt305x_register_wifi(void)
189 {
190 platform_device_register(&rt305x_wifi_device);
191 }