target/linux/ramips/files/arch/mips/ralink/rt288x/devices.c

   1 /*
   2  *  Ralink RT288x SoC platform device registration
   3  *
   4  *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
   5  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify it
   8  *  under the terms of the GNU General Public License version 2 as published
   9  *  by the Free Software Foundation.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/mtd/mtd.h>
  15 #include <linux/mtd/physmap.h>
  16 #include <linux/etherdevice.h>
  17
  18 #include <asm/addrspace.h>
  19
  20 #include <asm/mach-ralink/rt288x.h>
  21 #include <asm/mach-ralink/rt288x_regs.h>
  22 #include <asm/mach-ralink/ramips_eth_platform.h>
  23
  24 #include "devices.h"
  25
  26 static struct resource rt288x_flash0_resources[] = {
  27         {
  28                 .flags  = IORESOURCE_MEM,
  29                 .start  = KSEG1ADDR(RT2880_FLASH0_BASE),
  30                 .end    = KSEG1ADDR(RT2880_FLASH0_BASE) +
  31                           RT2880_FLASH0_SIZE - 1,
  32         },
  33 };
  34
  35 static struct platform_device rt288x_flash0_device = {
  36         .name           = "physmap-flash",
  37         .resource       = rt288x_flash0_resources,
  38         .num_resources  = ARRAY_SIZE(rt288x_flash0_resources),
  39 };
  40
  41 static struct resource rt288x_flash1_resources[] = {
  42         {
  43                 .flags  = IORESOURCE_MEM,
  44                 .start  = KSEG1ADDR(RT2880_FLASH1_BASE),
  45                 .end    = KSEG1ADDR(RT2880_FLASH1_BASE) +
  46                           RT2880_FLASH1_SIZE - 1,
  47         },
  48 };
  49
  50 static struct platform_device rt288x_flash1_device = {
  51         .name           = "physmap-flash",
  52         .resource       = rt288x_flash1_resources,
  53         .num_resources  = ARRAY_SIZE(rt288x_flash1_resources),
  54 };
  55
  56 static int rt288x_flash_instance __initdata;
  57 void __init rt288x_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 = &rt288x_flash0_device;
  67                 reg = MEMC_REG_FLASH_CFG0;
  68                 break;
  69         case 1:
  70                 pdev = &rt288x_flash1_device;
  71                 reg = MEMC_REG_FLASH_CFG1;
  72                 break;
  73         default:
  74                 return;
  75         }
  76
  77         t = rt288x_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 "RT288x: flash bank%u witdh is invalid\n", id);
  92                 return;
  93         }
  94
  95         pdev->dev.platform_data = pdata;
  96         pdev->id = rt288x_flash_instance;
  97
  98         platform_device_register(pdev);
  99         rt288x_flash_instance++;
 100 }
 101
 102 static struct resource rt288x_wifi_resources[] = {
 103         {
 104                 .start  = RT2880_WMAC_BASE,
 105                 .end    = RT2880_WMAC_BASE + 0x3FFFF,
 106                 .flags  = IORESOURCE_MEM,
 107         }, {
 108                 .start  = RT288X_CPU_IRQ_WNIC,
 109                 .end    = RT288X_CPU_IRQ_WNIC,
 110                 .flags  = IORESOURCE_IRQ,
 111         },
 112 };
 113
 114 static struct platform_device rt288x_wifi_device = {
 115         .name                   = "rt2800_wmac",
 116         .resource               = rt288x_wifi_resources,
 117         .num_resources  = ARRAY_SIZE(rt288x_wifi_resources),
 118         .dev = {
 119                 .platform_data = NULL,
 120         }
 121 };
 122
 123 void __init rt288x_register_wifi(void)
 124 {
 125         platform_device_register(&rt288x_wifi_device);
 126 }
 127
 128 static void rt288x_fe_reset(void)
 129 {
 130         rt288x_sysc_wr(RT2880_RESET_FE, SYSC_REG_RESET_CTRL);
 131 }
 132
 133 static struct resource rt288x_eth_resources[] = {
 134         {
 135                 .start  = RT2880_FE_BASE,
 136                 .end    = RT2880_FE_BASE + PAGE_SIZE - 1,
 137                 .flags  = IORESOURCE_MEM,
 138         }, {
 139                 .start  = RT288X_CPU_IRQ_FE,
 140                 .end    = RT288X_CPU_IRQ_FE,
 141                 .flags  = IORESOURCE_IRQ,
 142         },
 143 };
 144
 145 struct ramips_eth_platform_data rt288x_eth_data;
 146 static struct platform_device rt288x_eth_device = {
 147         .name           = "ramips_eth",
 148         .resource       = rt288x_eth_resources,
 149         .num_resources  = ARRAY_SIZE(rt288x_eth_resources),
 150         .dev = {
 151                 .platform_data = &rt288x_eth_data,
 152         }
 153 };
 154
 155 void __init rt288x_register_ethernet(void)
 156 {
 157         rt288x_eth_data.sys_freq = rt288x_sys_freq;
 158         rt288x_eth_data.reset_fe = rt288x_fe_reset;
 159         rt288x_eth_data.min_pkt_len = 64;
 160
 161         if (!is_valid_ether_addr(rt288x_eth_data.mac))
 162                 random_ether_addr(rt288x_eth_data.mac);
 163
 164         platform_device_register(&rt288x_eth_device);
 165 }