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/rt2x00_platform.h>
  18
  19 #include <asm/addrspace.h>
  20
  21 #include <asm/mach-ralink/rt305x.h>
  22 #include <asm/mach-ralink/rt305x_regs.h>
  23 #include "devices.h"
  24
  25 #include <ramips_eth_platform.h>
  26
  27 static struct resource rt305x_flash0_resources[] = {
  28         {
  29                 .flags  = IORESOURCE_MEM,
  30                 .start  = KSEG1ADDR(RT305X_FLASH0_BASE),
  31                 .end    = KSEG1ADDR(RT305X_FLASH0_BASE) +
  32                           RT305X_FLASH0_SIZE - 1,
  33         },
  34 };
  35
  36 static struct platform_device rt305x_flash0_device = {
  37         .name           = "physmap-flash",
  38         .resource       = rt305x_flash0_resources,
  39         .num_resources  = ARRAY_SIZE(rt305x_flash0_resources),
  40 };
  41
  42 static struct resource rt305x_flash1_resources[] = {
  43         {
  44                 .flags  = IORESOURCE_MEM,
  45                 .start  = KSEG1ADDR(RT305X_FLASH1_BASE),
  46                 .end    = KSEG1ADDR(RT305X_FLASH1_BASE) +
  47                           RT305X_FLASH1_SIZE - 1,
  48         },
  49 };
  50
  51 static struct platform_device rt305x_flash1_device = {
  52         .name           = "physmap-flash",
  53         .resource       = rt305x_flash1_resources,
  54         .num_resources  = ARRAY_SIZE(rt305x_flash1_resources),
  55 };
  56
  57 static int rt305x_flash_instance __initdata;
  58 void __init rt305x_register_flash(unsigned int id,
  59                                   struct physmap_flash_data *pdata)
  60 {
  61         struct platform_device *pdev;
  62         u32 t;
  63         int reg;
  64
  65         switch (id) {
  66         case 0:
  67                 pdev = &rt305x_flash0_device;
  68                 reg = MEMC_REG_FLASH_CFG0;
  69                 break;
  70         case 1:
  71                 pdev = &rt305x_flash1_device;
  72                 reg = MEMC_REG_FLASH_CFG1;
  73                 break;
  74         default:
  75                 return;
  76         }
  77
  78         t = rt305x_memc_rr(reg);
  79         t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
  80
  81         switch (t) {
  82         case FLASH_CFG_WIDTH_8BIT:
  83                 pdata->width = 1;
  84                 break;
  85         case FLASH_CFG_WIDTH_16BIT:
  86                 pdata->width = 2;
  87                 break;
  88         case FLASH_CFG_WIDTH_32BIT:
  89                 pdata->width = 4;
  90                 break;
  91         default:
  92                 printk(KERN_ERR "RT305x: flash bank%u witdh is invalid\n", id);
  93                 return;
  94         }
  95
  96         pdev->dev.platform_data = pdata;
  97         pdev->id = rt305x_flash_instance;
  98
  99         platform_device_register(pdev);
 100         rt305x_flash_instance++;
 101 }
 102
 103 static void rt305x_fe_reset(void)
 104 {
 105         rt305x_sysc_wr(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
 106         rt305x_sysc_wr(0, SYSC_REG_RESET_CTRL);
 107 }
 108
 109 static struct resource rt305x_eth_resources[] = {
 110         {
 111                 .start  = RT305X_FE_BASE,
 112                 .end    = RT305X_FE_BASE + PAGE_SIZE - 1,
 113                 .flags  = IORESOURCE_MEM,
 114         }, {
 115                 .start  = RT305X_CPU_IRQ_FE,
 116                 .end    = RT305X_CPU_IRQ_FE,
 117                 .flags  = IORESOURCE_IRQ,
 118         },
 119 };
 120
 121 static struct ramips_eth_platform_data ramips_eth_data = {
 122         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 123         .reset_fe = rt305x_fe_reset,
 124         .min_pkt_len = 64,
 125 };
 126
 127 static struct platform_device rt305x_eth_device = {
 128         .name           = "ramips_eth",
 129         .resource       = rt305x_eth_resources,
 130         .num_resources  = ARRAY_SIZE(rt305x_eth_resources),
 131         .dev = {
 132                 .platform_data = &ramips_eth_data,
 133         }
 134 };
 135
 136 static struct resource rt305x_esw_resources[] = {
 137         {
 138                 .start  = RT305X_SWITCH_BASE,
 139                 .end    = RT305X_SWITCH_BASE + PAGE_SIZE - 1,
 140                 .flags  = IORESOURCE_MEM,
 141         },
 142 };
 143
 144 struct rt305x_esw_platform_data rt305x_esw_data;
 145 static struct platform_device rt305x_esw_device = {
 146         .name           = "rt305x-esw",
 147         .resource       = rt305x_esw_resources,
 148         .num_resources  = ARRAY_SIZE(rt305x_esw_resources),
 149         .dev = {
 150                 .platform_data = &rt305x_esw_data,
 151         }
 152 };
 153
 154 void __init rt305x_register_ethernet(void)
 155 {
 156         struct clk *clk;
 157
 158         clk = clk_get(NULL, "sys");
 159         if (IS_ERR(clk))
 160                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 161
 162         ramips_eth_data.sys_freq = clk_get_rate(clk);
 163
 164         platform_device_register(&rt305x_esw_device);
 165         platform_device_register(&rt305x_eth_device);
 166 }
 167
 168 static struct resource rt305x_wifi_resources[] = {
 169         {
 170                 .start  = RT305X_WMAC_BASE,
 171                 .end    = RT305X_WMAC_BASE + 0x3FFFF,
 172                 .flags  = IORESOURCE_MEM,
 173         }, {
 174                 .start  = RT305X_CPU_IRQ_WNIC,
 175                 .end    = RT305X_CPU_IRQ_WNIC,
 176                 .flags  = IORESOURCE_IRQ,
 177         },
 178 };
 179
 180 static struct rt2x00_platform_data rt305x_wifi_data;
 181 static struct platform_device rt305x_wifi_device = {
 182         .name                   = "rt2800_wmac",
 183         .resource               = rt305x_wifi_resources,
 184         .num_resources  = ARRAY_SIZE(rt305x_wifi_resources),
 185         .dev = {
 186                 .platform_data = &rt305x_wifi_data,
 187         }
 188 };
 189
 190 void __init rt305x_register_wifi(void)
 191 {
 192         rt305x_wifi_data.eeprom_file_name = "RT305X.eeprom";
 193         platform_device_register(&rt305x_wifi_device);
 194 }
 195
 196 static struct resource rt305x_wdt_resources[] = {
 197         {
 198                 .start  = RT305X_TIMER_BASE,
 199                 .end    = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
 200                 .flags  = IORESOURCE_MEM,
 201         },
 202 };
 203
 204 static struct platform_device rt305x_wdt_device = {
 205         .name           = "ramips-wdt",
 206         .id             = -1,
 207         .resource       = rt305x_wdt_resources,
 208         .num_resources  = ARRAY_SIZE(rt305x_wdt_resources),
 209 };
 210
 211 void __init rt305x_register_wdt(void)
 212 {
 213         u32 t;
 214
 215         /* enable WDT reset output on pin SRAM_CS_N */
 216         t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 217         t |= SYSTEM_CONFIG_SRAM_CS0_MODE_WDT <<
 218              SYSTEM_CONFIG_SRAM_CS0_MODE_SHIFT;
 219         rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
 220
 221         platform_device_register(&rt305x_wdt_device);
 222 }