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
  28 static struct resource rt305x_flash0_resources[] = {
  29         {
  30                 .flags  = IORESOURCE_MEM,
  31                 .start  = KSEG1ADDR(RT305X_FLASH0_BASE),
  32                 .end    = KSEG1ADDR(RT305X_FLASH0_BASE) +
  33                           RT305X_FLASH0_SIZE - 1,
  34         },
  35 };
  36
  37 static struct platform_device rt305x_flash0_device = {
  38         .name           = "physmap-flash",
  39         .resource       = rt305x_flash0_resources,
  40         .num_resources  = ARRAY_SIZE(rt305x_flash0_resources),
  41 };
  42
  43 static struct resource rt305x_flash1_resources[] = {
  44         {
  45                 .flags  = IORESOURCE_MEM,
  46                 .start  = KSEG1ADDR(RT305X_FLASH1_BASE),
  47                 .end    = KSEG1ADDR(RT305X_FLASH1_BASE) +
  48                           RT305X_FLASH1_SIZE - 1,
  49         },
  50 };
  51
  52 static struct platform_device rt305x_flash1_device = {
  53         .name           = "physmap-flash",
  54         .resource       = rt305x_flash1_resources,
  55         .num_resources  = ARRAY_SIZE(rt305x_flash1_resources),
  56 };
  57
  58 static int rt305x_flash_instance __initdata;
  59 void __init rt305x_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 = &rt305x_flash0_device;
  69                 reg = MEMC_REG_FLASH_CFG0;
  70                 break;
  71         case 1:
  72                 pdev = &rt305x_flash1_device;
  73                 reg = MEMC_REG_FLASH_CFG1;
  74                 break;
  75         default:
  76                 return;
  77         }
  78
  79         t = rt305x_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 "RT305x: flash bank%u witdh is invalid\n", id);
  94                 return;
  95         }
  96
  97         pdev->dev.platform_data = pdata;
  98         pdev->id = rt305x_flash_instance;
  99
 100         platform_device_register(pdev);
 101         rt305x_flash_instance++;
 102 }
 103
 104 static void rt305x_fe_reset(void)
 105 {
 106         rt305x_sysc_wr(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
 107         rt305x_sysc_wr(0, SYSC_REG_RESET_CTRL);
 108 }
 109
 110 static struct resource rt305x_eth_resources[] = {
 111         {
 112                 .start  = RT305X_FE_BASE,
 113                 .end    = RT305X_FE_BASE + PAGE_SIZE - 1,
 114                 .flags  = IORESOURCE_MEM,
 115         }, {
 116                 .start  = RT305X_CPU_IRQ_FE,
 117                 .end    = RT305X_CPU_IRQ_FE,
 118                 .flags  = IORESOURCE_IRQ,
 119         },
 120 };
 121
 122 static struct ramips_eth_platform_data ramips_eth_data = {
 123         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 124         .reset_fe = rt305x_fe_reset,
 125         .min_pkt_len = 64,
 126 };
 127
 128 static struct platform_device rt305x_eth_device = {
 129         .name           = "ramips_eth",
 130         .resource       = rt305x_eth_resources,
 131         .num_resources  = ARRAY_SIZE(rt305x_eth_resources),
 132         .dev = {
 133                 .platform_data = &ramips_eth_data,
 134         }
 135 };
 136
 137 static struct resource rt305x_esw_resources[] = {
 138         {
 139                 .start  = RT305X_SWITCH_BASE,
 140                 .end    = RT305X_SWITCH_BASE + PAGE_SIZE - 1,
 141                 .flags  = IORESOURCE_MEM,
 142         },
 143 };
 144
 145 struct rt305x_esw_platform_data rt305x_esw_data;
 146 static struct platform_device rt305x_esw_device = {
 147         .name           = "rt305x-esw",
 148         .resource       = rt305x_esw_resources,
 149         .num_resources  = ARRAY_SIZE(rt305x_esw_resources),
 150         .dev = {
 151                 .platform_data = &rt305x_esw_data,
 152         }
 153 };
 154
 155 void __init rt305x_register_ethernet(void)
 156 {
 157         struct clk *clk;
 158
 159         clk = clk_get(NULL, "sys");
 160         if (IS_ERR(clk))
 161                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 162
 163         ramips_eth_data.sys_freq = clk_get_rate(clk);
 164
 165         platform_device_register(&rt305x_esw_device);
 166         platform_device_register(&rt305x_eth_device);
 167 }
 168
 169 static struct resource rt305x_wifi_resources[] = {
 170         {
 171                 .start  = RT305X_WMAC_BASE,
 172                 .end    = RT305X_WMAC_BASE + 0x3FFFF,
 173                 .flags  = IORESOURCE_MEM,
 174         }, {
 175                 .start  = RT305X_CPU_IRQ_WNIC,
 176                 .end    = RT305X_CPU_IRQ_WNIC,
 177                 .flags  = IORESOURCE_IRQ,
 178         },
 179 };
 180
 181 static struct rt2x00_platform_data rt305x_wifi_data;
 182 static struct platform_device rt305x_wifi_device = {
 183         .name                   = "rt2800_wmac",
 184         .resource               = rt305x_wifi_resources,
 185         .num_resources  = ARRAY_SIZE(rt305x_wifi_resources),
 186         .dev = {
 187                 .platform_data = &rt305x_wifi_data,
 188         }
 189 };
 190
 191 void __init rt305x_register_wifi(void)
 192 {
 193         rt305x_wifi_data.eeprom_file_name = "RT305X.eeprom";
 194         platform_device_register(&rt305x_wifi_device);
 195 }
 196
 197 static struct resource rt305x_wdt_resources[] = {
 198         {
 199                 .start  = RT305X_TIMER_BASE,
 200                 .end    = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
 201                 .flags  = IORESOURCE_MEM,
 202         },
 203 };
 204
 205 static struct platform_device rt305x_wdt_device = {
 206         .name           = "ramips-wdt",
 207         .id             = -1,
 208         .resource       = rt305x_wdt_resources,
 209         .num_resources  = ARRAY_SIZE(rt305x_wdt_resources),
 210 };
 211
 212 void __init rt305x_register_wdt(void)
 213 {
 214         u32 t;
 215
 216         /* enable WDT reset output on pin SRAM_CS_N */
 217         t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 218         t |= SYSTEM_CONFIG_SRAM_CS0_MODE_WDT <<
 219              SYSTEM_CONFIG_SRAM_CS0_MODE_SHIFT;
 220         rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
 221
 222         platform_device_register(&rt305x_wdt_device);
 223 }
 224
 225 static struct resource rt305x_spi_resources[] = {
 226         {
 227                 .flags  = IORESOURCE_MEM,
 228                 .start  = RT305X_SPI_BASE,
 229                 .end    = RT305X_SPI_BASE + RT305X_SPI_SIZE - 1,
 230         },
 231 };
 232
 233 static struct platform_device rt305x_spi_device = {
 234         .name           = "ramips-spi",
 235         .id             = 0,
 236         .resource       = rt305x_spi_resources,
 237         .num_resources  = ARRAY_SIZE(rt305x_spi_resources),
 238 };
 239
 240 void __init rt305x_register_spi(struct spi_board_info *info, int n)
 241 {
 242         spi_register_board_info(info, n);
 243         platform_device_register(&rt305x_spi_device);
 244 }