1/* 2 * Ralink RT288x SoC platform device registration 3 * 4 * Copyright (C) 2008-2011 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#include <linux/err.h> 18#include <linux/clk.h> 19#include <linux/rt2x00_platform.h> 20 21#include <asm/addrspace.h> 22 23#include <asm/mach-ralink/rt288x.h> 24#include <asm/mach-ralink/rt288x_regs.h> 25#include <asm/mach-ralink/ramips_eth_platform.h> 26 27#include "devices.h" 28 29static struct resource rt288x_flash0_resources[] = { 30 { 31 .flags = IORESOURCE_MEM, 32 .start = KSEG1ADDR(RT2880_FLASH0_BASE), 33 .end = KSEG1ADDR(RT2880_FLASH0_BASE) + 34 RT2880_FLASH0_SIZE - 1, 35 }, 36}; 37 38struct physmap_flash_data rt288x_flash0_data; 39static struct platform_device rt288x_flash0_device = { 40 .name = "physmap-flash", 41 .resource = rt288x_flash0_resources, 42 .num_resources = ARRAY_SIZE(rt288x_flash0_resources), 43 .dev = { 44 .platform_data = &rt288x_flash0_data, 45 }, 46}; 47 48static struct resource rt288x_flash1_resources[] = { 49 { 50 .flags = IORESOURCE_MEM, 51 .start = KSEG1ADDR(RT2880_FLASH1_BASE), 52 .end = KSEG1ADDR(RT2880_FLASH1_BASE) + 53 RT2880_FLASH1_SIZE - 1, 54 }, 55}; 56 57struct physmap_flash_data rt288x_flash1_data; 58static struct platform_device rt288x_flash1_device = { 59 .name = "physmap-flash", 60 .resource = rt288x_flash1_resources, 61 .num_resources = ARRAY_SIZE(rt288x_flash1_resources), 62 .dev = { 63 .platform_data = &rt288x_flash1_data, 64 }, 65}; 66 67static int rt288x_flash_instance __initdata; 68void __init rt288x_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 = &rt288x_flash0_device; 78 reg = MEMC_REG_FLASH_CFG0; 79 break; 80 case 1: 81 pdev = &rt288x_flash1_device; 82 reg = MEMC_REG_FLASH_CFG1; 83 break; 84 default: 85 return; 86 } 87 88 t = rt288x_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 "RT288x: flash bank%u witdh is invalid\n", id); 104 return; 105 } 106 107 pdev->id = rt288x_flash_instance; 108 109 platform_device_register(pdev); 110 rt288x_flash_instance++; 111} 112 113static struct resource rt288x_wifi_resources[] = { 114 { 115 .start = RT2880_WMAC_BASE, 116 .end = RT2880_WMAC_BASE + 0x3FFFF, 117 .flags = IORESOURCE_MEM, 118 }, { 119 .start = RT288X_CPU_IRQ_WNIC, 120 .end = RT288X_CPU_IRQ_WNIC, 121 .flags = IORESOURCE_IRQ, 122 }, 123}; 124 125static struct rt2x00_platform_data rt288x_wifi_data; 126static struct platform_device rt288x_wifi_device = { 127 .name = "rt2800_wmac", 128 .resource = rt288x_wifi_resources, 129 .num_resources = ARRAY_SIZE(rt288x_wifi_resources), 130 .dev = { 131 .platform_data = &rt288x_wifi_data, 132 } 133}; 134 135void __init rt288x_register_wifi(void) 136{ 137 rt288x_wifi_data.eeprom_file_name = "RT288X.eeprom"; 138 platform_device_register(&rt288x_wifi_device); 139} 140 141static void rt288x_fe_reset(void) 142{ 143 rt288x_sysc_wr(RT2880_RESET_FE, SYSC_REG_RESET_CTRL); 144} 145 146static struct resource rt288x_eth_resources[] = { 147 { 148 .start = RT2880_FE_BASE, 149 .end = RT2880_FE_BASE + PAGE_SIZE - 1, 150 .flags = IORESOURCE_MEM, 151 }, { 152 .start = RT288X_CPU_IRQ_FE, 153 .end = RT288X_CPU_IRQ_FE, 154 .flags = IORESOURCE_IRQ, 155 }, 156}; 157 158struct ramips_eth_platform_data rt288x_eth_data; 159static struct platform_device rt288x_eth_device = { 160 .name = "ramips_eth", 161 .resource = rt288x_eth_resources, 162 .num_resources = ARRAY_SIZE(rt288x_eth_resources), 163 .dev = { 164 .platform_data = &rt288x_eth_data, 165 } 166}; 167 168void __init rt288x_register_ethernet(void) 169{ 170 struct clk *clk; 171 172 clk = clk_get(NULL, "sys"); 173 if (IS_ERR(clk)) 174 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk)); 175 176 rt288x_eth_data.sys_freq = clk_get_rate(clk); 177 rt288x_eth_data.reset_fe = rt288x_fe_reset; 178 rt288x_eth_data.min_pkt_len = 64; 179 180 if (!is_valid_ether_addr(rt288x_eth_data.mac)) 181 random_ether_addr(rt288x_eth_data.mac); 182 183 platform_device_register(&rt288x_eth_device); 184} 185 186static struct resource rt288x_wdt_resources[] = { 187 { 188 .start = RT2880_TIMER_BASE, 189 .end = RT2880_TIMER_BASE + RT2880_TIMER_SIZE - 1, 190 .flags = IORESOURCE_MEM, 191 }, 192}; 193 194static struct platform_device rt288x_wdt_device = { 195 .name = "ramips-wdt", 196 .id = -1, 197 .resource = rt288x_wdt_resources, 198 .num_resources = ARRAY_SIZE(rt288x_wdt_resources), 199}; 200 201void __init rt288x_register_wdt(void) 202{ 203 u32 t; 204 205 /* enable WDT reset output on pin SRAM_CS_N */ 206 t = rt288x_sysc_rr(SYSC_REG_CLKCFG); 207 t |= CLKCFG_SRAM_CS_N_WDT; 208 rt288x_sysc_wr(t, SYSC_REG_CLKCFG); 209 210 platform_device_register(&rt288x_wdt_device); 211} 212