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 #include <linux/spi/spi.h>
  18 #include <linux/rt2x00_platform.h>
  19
  20 #include <asm/addrspace.h>
  21
  22 #include <asm/mach-ralink/rt305x.h>
  23 #include <asm/mach-ralink/rt305x_regs.h>
  24 #include "devices.h"
  25
  26 #include <ramips_eth_platform.h>
  27 #include <rt305x_esw_platform.h>
  28
  29 static struct resource rt305x_flash0_resources[] = {
  30         {
  31                 .flags  = IORESOURCE_MEM,
  32                 .start  = KSEG1ADDR(RT305X_FLASH0_BASE),
  33                 .end    = KSEG1ADDR(RT305X_FLASH0_BASE) +
  34                           RT305X_FLASH0_SIZE - 1,
  35         },
  36 };
  37
  38 struct physmap_flash_data rt305x_flash0_data;
  39 static struct platform_device rt305x_flash0_device = {
  40         .name           = "physmap-flash",
  41         .resource       = rt305x_flash0_resources,
  42         .num_resources  = ARRAY_SIZE(rt305x_flash0_resources),
  43         .dev = {
  44                 .platform_data = &rt305x_flash0_data,
  45         },
  46 };
  47
  48 static struct resource rt305x_flash1_resources[] = {
  49         {
  50                 .flags  = IORESOURCE_MEM,
  51                 .start  = KSEG1ADDR(RT305X_FLASH1_BASE),
  52                 .end    = KSEG1ADDR(RT305X_FLASH1_BASE) +
  53                           RT305X_FLASH1_SIZE - 1,
  54         },
  55 };
  56
  57 struct physmap_flash_data rt305x_flash1_data;
  58 static struct platform_device rt305x_flash1_device = {
  59         .name           = "physmap-flash",
  60         .resource       = rt305x_flash1_resources,
  61         .num_resources  = ARRAY_SIZE(rt305x_flash1_resources),
  62         .dev = {
  63                 .platform_data = &rt305x_flash1_data,
  64         },
  65 };
  66
  67 static int rt305x_flash_instance __initdata;
  68 void __init rt305x_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 = &rt305x_flash0_device;
  78                 reg = MEMC_REG_FLASH_CFG0;
  79                 break;
  80         case 1:
  81                 pdev = &rt305x_flash1_device;
  82                 reg = MEMC_REG_FLASH_CFG1;
  83                 break;
  84         default:
  85                 return;
  86         }
  87
  88         t = rt305x_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 "RT305x: flash bank%u witdh is invalid\n", id);
 104                 return;
 105         }
 106
 107         pdev->id = rt305x_flash_instance;
 108
 109         platform_device_register(pdev);
 110         rt305x_flash_instance++;
 111 }
 112
 113 static void rt305x_fe_reset(void)
 114 {
 115         rt305x_sysc_wr(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
 116         rt305x_sysc_wr(0, SYSC_REG_RESET_CTRL);
 117 }
 118
 119 static struct resource rt305x_eth_resources[] = {
 120         {
 121                 .start  = RT305X_FE_BASE,
 122                 .end    = RT305X_FE_BASE + PAGE_SIZE - 1,
 123                 .flags  = IORESOURCE_MEM,
 124         }, {
 125                 .start  = RT305X_CPU_IRQ_FE,
 126                 .end    = RT305X_CPU_IRQ_FE,
 127                 .flags  = IORESOURCE_IRQ,
 128         },
 129 };
 130
 131 static struct ramips_eth_platform_data ramips_eth_data = {
 132         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 133         .reset_fe = rt305x_fe_reset,
 134         .min_pkt_len = 64,
 135 };
 136
 137 static struct platform_device rt305x_eth_device = {
 138         .name           = "ramips_eth",
 139         .resource       = rt305x_eth_resources,
 140         .num_resources  = ARRAY_SIZE(rt305x_eth_resources),
 141         .dev = {
 142                 .platform_data = &ramips_eth_data,
 143         }
 144 };
 145
 146 static struct resource rt305x_esw_resources[] = {
 147         {
 148                 .start  = RT305X_SWITCH_BASE,
 149                 .end    = RT305X_SWITCH_BASE + PAGE_SIZE - 1,
 150                 .flags  = IORESOURCE_MEM,
 151         },
 152 };
 153
 154 struct rt305x_esw_platform_data rt305x_esw_data = {
 155         .vlan_config            = RT305X_ESW_VLAN_CONFIG_NONE,
 156         .reg_initval_fct2       = 0x00d6500c,
 157         .reg_initval_fpa2       = 0x3f502b28,
 158 };
 159
 160 static struct platform_device rt305x_esw_device = {
 161         .name           = "rt305x-esw",
 162         .resource       = rt305x_esw_resources,
 163         .num_resources  = ARRAY_SIZE(rt305x_esw_resources),
 164         .dev = {
 165                 .platform_data = &rt305x_esw_data,
 166         }
 167 };
 168
 169 void __init rt305x_register_ethernet(void)
 170 {
 171         struct clk *clk;
 172
 173         clk = clk_get(NULL, "sys");
 174         if (IS_ERR(clk))
 175                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 176
 177         ramips_eth_data.sys_freq = clk_get_rate(clk);
 178
 179         platform_device_register(&rt305x_esw_device);
 180         platform_device_register(&rt305x_eth_device);
 181 }
 182
 183 static struct resource rt305x_wifi_resources[] = {
 184         {
 185                 .start  = RT305X_WMAC_BASE,
 186                 .end    = RT305X_WMAC_BASE + 0x3FFFF,
 187                 .flags  = IORESOURCE_MEM,
 188         }, {
 189                 .start  = RT305X_CPU_IRQ_WNIC,
 190                 .end    = RT305X_CPU_IRQ_WNIC,
 191                 .flags  = IORESOURCE_IRQ,
 192         },
 193 };
 194
 195 static struct rt2x00_platform_data rt305x_wifi_data;
 196 static struct platform_device rt305x_wifi_device = {
 197         .name                   = "rt2800_wmac",
 198         .resource               = rt305x_wifi_resources,
 199         .num_resources  = ARRAY_SIZE(rt305x_wifi_resources),
 200         .dev = {
 201                 .platform_data = &rt305x_wifi_data,
 202         }
 203 };
 204
 205 void __init rt305x_register_wifi(void)
 206 {
 207         rt305x_wifi_data.eeprom_file_name = "RT305X.eeprom";
 208         platform_device_register(&rt305x_wifi_device);
 209 }
 210
 211 static struct resource rt305x_wdt_resources[] = {
 212         {
 213                 .start  = RT305X_TIMER_BASE,
 214                 .end    = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
 215                 .flags  = IORESOURCE_MEM,
 216         },
 217 };
 218
 219 static struct platform_device rt305x_wdt_device = {
 220         .name           = "ramips-wdt",
 221         .id             = -1,
 222         .resource       = rt305x_wdt_resources,
 223         .num_resources  = ARRAY_SIZE(rt305x_wdt_resources),
 224 };
 225
 226 void __init rt305x_register_wdt(void)
 227 {
 228         u32 t;
 229
 230         /* enable WDT reset output on pin SRAM_CS_N */
 231         t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 232         t |= SYSTEM_CONFIG_SRAM_CS0_MODE_WDT <<
 233              SYSTEM_CONFIG_SRAM_CS0_MODE_SHIFT;
 234         rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
 235
 236         platform_device_register(&rt305x_wdt_device);
 237 }
 238
 239 static struct resource rt305x_spi_resources[] = {
 240         {
 241                 .flags  = IORESOURCE_MEM,
 242                 .start  = RT305X_SPI_BASE,
 243                 .end    = RT305X_SPI_BASE + RT305X_SPI_SIZE - 1,
 244         },
 245 };
 246
 247 static struct platform_device rt305x_spi_device = {
 248         .name           = "ramips-spi",
 249         .id             = 0,
 250         .resource       = rt305x_spi_resources,
 251         .num_resources  = ARRAY_SIZE(rt305x_spi_resources),
 252 };
 253
 254 void __init rt305x_register_spi(struct spi_board_info *info, int n)
 255 {
 256         spi_register_board_info(info, n);
 257         platform_device_register(&rt305x_spi_device);
 258 }
 259
 260 static struct resource rt305x_usb_resources[] = {
 261         {
 262                 .start  = RT305X_OTG_BASE,
 263                 .end    = RT305X_OTG_BASE + 0x3FFFF,
 264                 .flags  = IORESOURCE_MEM,
 265         }, {
 266                 .start  = RT305X_INTC_IRQ_OTG,
 267                 .end    = RT305X_INTC_IRQ_OTG,
 268                 .flags  = IORESOURCE_IRQ,
 269         },
 270 };
 271
 272 static struct platform_device rt305x_usb_device = {
 273         .name                   = "dwc_otg",
 274         .resource               = rt305x_usb_resources,
 275         .num_resources  = ARRAY_SIZE(rt305x_usb_resources),
 276         .dev = {
 277                 .platform_data = NULL,
 278         }
 279 };
 280
 281 void __init rt305x_register_usb(void)
 282 {
 283         platform_device_register(&rt305x_usb_device);
 284 }