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 static struct platform_device rt305x_flash0_device = {
  39         .name           = "physmap-flash",
  40         .resource       = rt305x_flash0_resources,
  41         .num_resources  = ARRAY_SIZE(rt305x_flash0_resources),
  42 };
  43
  44 static struct resource rt305x_flash1_resources[] = {
  45         {
  46                 .flags  = IORESOURCE_MEM,
  47                 .start  = KSEG1ADDR(RT305X_FLASH1_BASE),
  48                 .end    = KSEG1ADDR(RT305X_FLASH1_BASE) +
  49                           RT305X_FLASH1_SIZE - 1,
  50         },
  51 };
  52
  53 static struct platform_device rt305x_flash1_device = {
  54         .name           = "physmap-flash",
  55         .resource       = rt305x_flash1_resources,
  56         .num_resources  = ARRAY_SIZE(rt305x_flash1_resources),
  57 };
  58
  59 static int rt305x_flash_instance __initdata;
  60 void __init rt305x_register_flash(unsigned int id,
  61                                   struct physmap_flash_data *pdata)
  62 {
  63         struct platform_device *pdev;
  64         u32 t;
  65         int reg;
  66
  67         switch (id) {
  68         case 0:
  69                 pdev = &rt305x_flash0_device;
  70                 reg = MEMC_REG_FLASH_CFG0;
  71                 break;
  72         case 1:
  73                 pdev = &rt305x_flash1_device;
  74                 reg = MEMC_REG_FLASH_CFG1;
  75                 break;
  76         default:
  77                 return;
  78         }
  79
  80         t = rt305x_memc_rr(reg);
  81         t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
  82
  83         switch (t) {
  84         case FLASH_CFG_WIDTH_8BIT:
  85                 pdata->width = 1;
  86                 break;
  87         case FLASH_CFG_WIDTH_16BIT:
  88                 pdata->width = 2;
  89                 break;
  90         case FLASH_CFG_WIDTH_32BIT:
  91                 pdata->width = 4;
  92                 break;
  93         default:
  94                 printk(KERN_ERR "RT305x: flash bank%u witdh is invalid\n", id);
  95                 return;
  96         }
  97
  98         pdev->dev.platform_data = pdata;
  99         pdev->id = rt305x_flash_instance;
 100
 101         platform_device_register(pdev);
 102         rt305x_flash_instance++;
 103 }
 104
 105 static void rt305x_fe_reset(void)
 106 {
 107         rt305x_sysc_wr(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
 108         rt305x_sysc_wr(0, SYSC_REG_RESET_CTRL);
 109 }
 110
 111 static struct resource rt305x_eth_resources[] = {
 112         {
 113                 .start  = RT305X_FE_BASE,
 114                 .end    = RT305X_FE_BASE + PAGE_SIZE - 1,
 115                 .flags  = IORESOURCE_MEM,
 116         }, {
 117                 .start  = RT305X_CPU_IRQ_FE,
 118                 .end    = RT305X_CPU_IRQ_FE,
 119                 .flags  = IORESOURCE_IRQ,
 120         },
 121 };
 122
 123 static struct ramips_eth_platform_data ramips_eth_data = {
 124         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 125         .reset_fe = rt305x_fe_reset,
 126         .min_pkt_len = 64,
 127 };
 128
 129 static struct platform_device rt305x_eth_device = {
 130         .name           = "ramips_eth",
 131         .resource       = rt305x_eth_resources,
 132         .num_resources  = ARRAY_SIZE(rt305x_eth_resources),
 133         .dev = {
 134                 .platform_data = &ramips_eth_data,
 135         }
 136 };
 137
 138 static struct resource rt305x_esw_resources[] = {
 139         {
 140                 .start  = RT305X_SWITCH_BASE,
 141                 .end    = RT305X_SWITCH_BASE + PAGE_SIZE - 1,
 142                 .flags  = IORESOURCE_MEM,
 143         },
 144 };
 145
 146 struct rt305x_esw_platform_data rt305x_esw_data = {
 147         .vlan_config            = RT305X_ESW_VLAN_CONFIG_NONE,
 148         .reg_initval_fct2       = 0x00d6500c,
 149         .reg_initval_fpa2       = 0x3f502b28,
 150 };
 151
 152 static struct platform_device rt305x_esw_device = {
 153         .name           = "rt305x-esw",
 154         .resource       = rt305x_esw_resources,
 155         .num_resources  = ARRAY_SIZE(rt305x_esw_resources),
 156         .dev = {
 157                 .platform_data = &rt305x_esw_data,
 158         }
 159 };
 160
 161 void __init rt305x_register_ethernet(void)
 162 {
 163         struct clk *clk;
 164
 165         clk = clk_get(NULL, "sys");
 166         if (IS_ERR(clk))
 167                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 168
 169         ramips_eth_data.sys_freq = clk_get_rate(clk);
 170
 171         platform_device_register(&rt305x_esw_device);
 172         platform_device_register(&rt305x_eth_device);
 173 }
 174
 175 static struct resource rt305x_wifi_resources[] = {
 176         {
 177                 .start  = RT305X_WMAC_BASE,
 178                 .end    = RT305X_WMAC_BASE + 0x3FFFF,
 179                 .flags  = IORESOURCE_MEM,
 180         }, {
 181                 .start  = RT305X_CPU_IRQ_WNIC,
 182                 .end    = RT305X_CPU_IRQ_WNIC,
 183                 .flags  = IORESOURCE_IRQ,
 184         },
 185 };
 186
 187 static struct rt2x00_platform_data rt305x_wifi_data;
 188 static struct platform_device rt305x_wifi_device = {
 189         .name                   = "rt2800_wmac",
 190         .resource               = rt305x_wifi_resources,
 191         .num_resources  = ARRAY_SIZE(rt305x_wifi_resources),
 192         .dev = {
 193                 .platform_data = &rt305x_wifi_data,
 194         }
 195 };
 196
 197 void __init rt305x_register_wifi(void)
 198 {
 199         rt305x_wifi_data.eeprom_file_name = "RT305X.eeprom";
 200         platform_device_register(&rt305x_wifi_device);
 201 }
 202
 203 static struct resource rt305x_wdt_resources[] = {
 204         {
 205                 .start  = RT305X_TIMER_BASE,
 206                 .end    = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
 207                 .flags  = IORESOURCE_MEM,
 208         },
 209 };
 210
 211 static struct platform_device rt305x_wdt_device = {
 212         .name           = "ramips-wdt",
 213         .id             = -1,
 214         .resource       = rt305x_wdt_resources,
 215         .num_resources  = ARRAY_SIZE(rt305x_wdt_resources),
 216 };
 217
 218 void __init rt305x_register_wdt(void)
 219 {
 220         u32 t;
 221
 222         /* enable WDT reset output on pin SRAM_CS_N */
 223         t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 224         t |= SYSTEM_CONFIG_SRAM_CS0_MODE_WDT <<
 225              SYSTEM_CONFIG_SRAM_CS0_MODE_SHIFT;
 226         rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
 227
 228         platform_device_register(&rt305x_wdt_device);
 229 }
 230
 231 static struct resource rt305x_spi_resources[] = {
 232         {
 233                 .flags  = IORESOURCE_MEM,
 234                 .start  = RT305X_SPI_BASE,
 235                 .end    = RT305X_SPI_BASE + RT305X_SPI_SIZE - 1,
 236         },
 237 };
 238
 239 static struct platform_device rt305x_spi_device = {
 240         .name           = "ramips-spi",
 241         .id             = 0,
 242         .resource       = rt305x_spi_resources,
 243         .num_resources  = ARRAY_SIZE(rt305x_spi_resources),
 244 };
 245
 246 void __init rt305x_register_spi(struct spi_board_info *info, int n)
 247 {
 248         spi_register_board_info(info, n);
 249         platform_device_register(&rt305x_spi_device);
 250 }
 251
 252 static struct resource rt305x_usb_resources[] = {
 253         {
 254                 .start  = RT305X_OTG_BASE,
 255                 .end    = RT305X_OTG_BASE + 0x3FFFF,
 256                 .flags  = IORESOURCE_MEM,
 257         }, {
 258                 .start  = RT305X_INTC_IRQ_OTG,
 259                 .end    = RT305X_INTC_IRQ_OTG,
 260                 .flags  = IORESOURCE_IRQ,
 261         },
 262 };
 263
 264 static struct platform_device rt305x_usb_device = {
 265         .name                   = "dwc_otg",
 266         .resource               = rt305x_usb_resources,
 267         .num_resources  = ARRAY_SIZE(rt305x_usb_resources),
 268         .dev = {
 269                 .platform_data = NULL,
 270         }
 271 };
 272
 273 void __init rt305x_register_usb(void)
 274 {
 275         platform_device_register(&rt305x_usb_device);
 276 }