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 #include <linux/delay.h>
  20 #include <linux/dma-mapping.h>
  21
  22 #include <asm/addrspace.h>
  23
  24 #include <asm/mach-ralink/rt305x.h>
  25 #include <asm/mach-ralink/rt305x_regs.h>
  26 #include "devices.h"
  27
  28 #include <ramips_eth_platform.h>
  29 #include <rt305x_esw_platform.h>
  30 #include <rt3883_ehci_platform.h>
  31 #include <rt3883_ohci_platform.h>
  32
  33 static struct resource rt305x_flash0_resources[] = {
  34         {
  35                 .flags  = IORESOURCE_MEM,
  36                 .start  = KSEG1ADDR(RT305X_FLASH0_BASE),
  37                 .end    = KSEG1ADDR(RT305X_FLASH0_BASE) +
  38                           RT305X_FLASH0_SIZE - 1,
  39         },
  40 };
  41
  42 struct physmap_flash_data rt305x_flash0_data;
  43 static struct platform_device rt305x_flash0_device = {
  44         .name           = "physmap-flash",
  45         .resource       = rt305x_flash0_resources,
  46         .num_resources  = ARRAY_SIZE(rt305x_flash0_resources),
  47         .dev = {
  48                 .platform_data = &rt305x_flash0_data,
  49         },
  50 };
  51
  52 static struct resource rt305x_flash1_resources[] = {
  53         {
  54                 .flags  = IORESOURCE_MEM,
  55                 .start  = KSEG1ADDR(RT305X_FLASH1_BASE),
  56                 .end    = KSEG1ADDR(RT305X_FLASH1_BASE) +
  57                           RT305X_FLASH1_SIZE - 1,
  58         },
  59 };
  60
  61 struct physmap_flash_data rt305x_flash1_data;
  62 static struct platform_device rt305x_flash1_device = {
  63         .name           = "physmap-flash",
  64         .resource       = rt305x_flash1_resources,
  65         .num_resources  = ARRAY_SIZE(rt305x_flash1_resources),
  66         .dev = {
  67                 .platform_data = &rt305x_flash1_data,
  68         },
  69 };
  70
  71 static int rt305x_flash_instance __initdata;
  72 void __init rt305x_register_flash(unsigned int id)
  73 {
  74         struct platform_device *pdev;
  75         struct physmap_flash_data *pdata;
  76         u32 t;
  77         int reg;
  78
  79         switch (id) {
  80         case 0:
  81                 pdev = &rt305x_flash0_device;
  82                 reg = MEMC_REG_FLASH_CFG0;
  83                 break;
  84         case 1:
  85                 pdev = &rt305x_flash1_device;
  86                 reg = MEMC_REG_FLASH_CFG1;
  87                 break;
  88         default:
  89                 return;
  90         }
  91
  92         t = rt305x_memc_rr(reg);
  93         t = (t >> FLASH_CFG_WIDTH_SHIFT) & FLASH_CFG_WIDTH_MASK;
  94
  95         pdata = pdev->dev.platform_data;
  96         switch (t) {
  97         case FLASH_CFG_WIDTH_8BIT:
  98                 pdata->width = 1;
  99                 break;
 100         case FLASH_CFG_WIDTH_16BIT:
 101                 pdata->width = 2;
 102                 break;
 103         case FLASH_CFG_WIDTH_32BIT:
 104                 pdata->width = 4;
 105                 break;
 106         default:
 107                 printk(KERN_ERR "RT305x: flash bank%u witdh is invalid\n", id);
 108                 return;
 109         }
 110
 111         pdev->id = rt305x_flash_instance;
 112
 113         platform_device_register(pdev);
 114         rt305x_flash_instance++;
 115 }
 116
 117 static void rt305x_fe_reset(void)
 118 {
 119         rt305x_sysc_wr(RT305X_RESET_FE, SYSC_REG_RESET_CTRL);
 120         rt305x_sysc_wr(0, SYSC_REG_RESET_CTRL);
 121 }
 122
 123 static struct resource rt305x_eth_resources[] = {
 124         {
 125                 .start  = RT305X_FE_BASE,
 126                 .end    = RT305X_FE_BASE + PAGE_SIZE - 1,
 127                 .flags  = IORESOURCE_MEM,
 128         }, {
 129                 .start  = RT305X_CPU_IRQ_FE,
 130                 .end    = RT305X_CPU_IRQ_FE,
 131                 .flags  = IORESOURCE_IRQ,
 132         },
 133 };
 134
 135 static struct ramips_eth_platform_data ramips_eth_data = {
 136         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 137         .reset_fe = rt305x_fe_reset,
 138         .min_pkt_len = 64,
 139 };
 140
 141 static struct platform_device rt305x_eth_device = {
 142         .name           = "ramips_eth",
 143         .resource       = rt305x_eth_resources,
 144         .num_resources  = ARRAY_SIZE(rt305x_eth_resources),
 145         .dev = {
 146                 .platform_data = &ramips_eth_data,
 147         }
 148 };
 149
 150 static struct resource rt305x_esw_resources[] = {
 151         {
 152                 .start  = RT305X_SWITCH_BASE,
 153                 .end    = RT305X_SWITCH_BASE + PAGE_SIZE - 1,
 154                 .flags  = IORESOURCE_MEM,
 155         },
 156 };
 157
 158 struct rt305x_esw_platform_data rt305x_esw_data = {
 159         .vlan_config            = RT305X_ESW_VLAN_CONFIG_NONE,
 160         .reg_initval_fct2       = 0x00d6500c,
 161         .reg_initval_fpa2       = 0x3f502b28,
 162 };
 163
 164 static struct platform_device rt305x_esw_device = {
 165         .name           = "rt305x-esw",
 166         .resource       = rt305x_esw_resources,
 167         .num_resources  = ARRAY_SIZE(rt305x_esw_resources),
 168         .dev = {
 169                 .platform_data = &rt305x_esw_data,
 170         }
 171 };
 172
 173 void __init rt305x_register_ethernet(void)
 174 {
 175         struct clk *clk;
 176
 177         clk = clk_get(NULL, "sys");
 178         if (IS_ERR(clk))
 179                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 180
 181         ramips_eth_data.sys_freq = clk_get_rate(clk);
 182
 183         platform_device_register(&rt305x_esw_device);
 184         platform_device_register(&rt305x_eth_device);
 185 }
 186
 187 static struct resource rt305x_wifi_resources[] = {
 188         {
 189                 .start  = RT305X_WMAC_BASE,
 190                 .end    = RT305X_WMAC_BASE + 0x3FFFF,
 191                 .flags  = IORESOURCE_MEM,
 192         }, {
 193                 .start  = RT305X_CPU_IRQ_WNIC,
 194                 .end    = RT305X_CPU_IRQ_WNIC,
 195                 .flags  = IORESOURCE_IRQ,
 196         },
 197 };
 198
 199 static struct rt2x00_platform_data rt305x_wifi_data;
 200 static struct platform_device rt305x_wifi_device = {
 201         .name                   = "rt2800_wmac",
 202         .resource               = rt305x_wifi_resources,
 203         .num_resources  = ARRAY_SIZE(rt305x_wifi_resources),
 204         .dev = {
 205                 .platform_data = &rt305x_wifi_data,
 206         }
 207 };
 208
 209 void __init rt305x_register_wifi(void)
 210 {
 211         rt305x_wifi_data.eeprom_file_name = "RT305X.eeprom";
 212         platform_device_register(&rt305x_wifi_device);
 213 }
 214
 215 static struct resource rt305x_wdt_resources[] = {
 216         {
 217                 .start  = RT305X_TIMER_BASE,
 218                 .end    = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
 219                 .flags  = IORESOURCE_MEM,
 220         },
 221 };
 222
 223 static struct platform_device rt305x_wdt_device = {
 224         .name           = "ramips-wdt",
 225         .id             = -1,
 226         .resource       = rt305x_wdt_resources,
 227         .num_resources  = ARRAY_SIZE(rt305x_wdt_resources),
 228 };
 229
 230 void __init rt305x_register_wdt(void)
 231 {
 232         u32 t;
 233
 234         /* enable WDT reset output on pin SRAM_CS_N */
 235         t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 236         t |= RT305X_SYSCFG_SRAM_CS0_MODE_WDT <<
 237              RT305X_SYSCFG_SRAM_CS0_MODE_SHIFT;
 238         rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
 239
 240         platform_device_register(&rt305x_wdt_device);
 241 }
 242
 243 static struct resource rt305x_spi_resources[] = {
 244         {
 245                 .flags  = IORESOURCE_MEM,
 246                 .start  = RT305X_SPI_BASE,
 247                 .end    = RT305X_SPI_BASE + RT305X_SPI_SIZE - 1,
 248         },
 249 };
 250
 251 static struct platform_device rt305x_spi_device = {
 252         .name           = "ramips-spi",
 253         .id             = 0,
 254         .resource       = rt305x_spi_resources,
 255         .num_resources  = ARRAY_SIZE(rt305x_spi_resources),
 256 };
 257
 258 void __init rt305x_register_spi(struct spi_board_info *info, int n)
 259 {
 260         spi_register_board_info(info, n);
 261         platform_device_register(&rt305x_spi_device);
 262 }
 263
 264 static struct resource rt305x_dwc_otg_resources[] = {
 265         {
 266                 .start  = RT305X_OTG_BASE,
 267                 .end    = RT305X_OTG_BASE + 0x3FFFF,
 268                 .flags  = IORESOURCE_MEM,
 269         }, {
 270                 .start  = RT305X_INTC_IRQ_OTG,
 271                 .end    = RT305X_INTC_IRQ_OTG,
 272                 .flags  = IORESOURCE_IRQ,
 273         },
 274 };
 275
 276 static struct platform_device rt305x_dwc_otg_device = {
 277         .name                   = "dwc_otg",
 278         .resource               = rt305x_dwc_otg_resources,
 279         .num_resources  = ARRAY_SIZE(rt305x_dwc_otg_resources),
 280         .dev = {
 281                 .platform_data = NULL,
 282         }
 283 };
 284
 285 static atomic_t rt3352_usb_use_count = ATOMIC_INIT(0);
 286
 287 static void rt3352_usb_host_start(void)
 288 {
 289         u32 t;
 290
 291         if (atomic_inc_return(&rt3352_usb_use_count) != 1)
 292                 return;
 293
 294         t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
 295
 296         /* enable clock for port0's and port1's phys */
 297         t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
 298         t = t | RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN;
 299         rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
 300         mdelay(500);
 301
 302         /* pull USBHOST and USBDEV out from reset */
 303         t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
 304         t &= ~(RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV);
 305         rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
 306         mdelay(500);
 307
 308         /* enable host mode */
 309         t = rt305x_sysc_rr(RT3352_SYSC_REG_SYSCFG1);
 310         t |= RT3352_SYSCFG1_USB0_HOST_MODE;
 311         rt305x_sysc_wr(t, RT3352_SYSC_REG_SYSCFG1);
 312
 313         t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
 314 }
 315
 316 static void rt3352_usb_host_stop(void)
 317 {
 318         u32 t;
 319
 320         if (atomic_dec_return(&rt3352_usb_use_count) != 0)
 321                 return;
 322
 323         /* put USBHOST and USBDEV into reset */
 324         t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
 325         t |= RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV;
 326         rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
 327         udelay(10000);
 328
 329         /* disable clock for port0's and port1's phys*/
 330         t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
 331         t &= ~(RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN);
 332         rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
 333         udelay(10000);
 334 }
 335
 336 static struct rt3883_ehci_platform_data rt3352_ehci_data = {
 337         .start_hw       = rt3352_usb_host_start,
 338         .stop_hw        = rt3352_usb_host_stop,
 339 };
 340
 341 static struct resource rt3352_ehci_resources[] = {
 342         {
 343                 .start  = RT3352_EHCI_BASE,
 344                 .end    = RT3352_EHCI_BASE + RT3352_EHCI_SIZE - 1,
 345                 .flags  = IORESOURCE_MEM,
 346         }, {
 347                 .start  = RT305X_INTC_IRQ_OTG,
 348                 .end    = RT305X_INTC_IRQ_OTG,
 349                 .flags  = IORESOURCE_IRQ,
 350         },
 351 };
 352
 353 static u64 rt3352_ehci_dmamask = DMA_BIT_MASK(32);
 354 static struct platform_device rt3352_ehci_device = {
 355         .name           = "rt3883-ehci",
 356         .id             = -1,
 357         .resource       = rt3352_ehci_resources,
 358         .num_resources  = ARRAY_SIZE(rt3352_ehci_resources),
 359         .dev            = {
 360                 .dma_mask               = &rt3352_ehci_dmamask,
 361                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 362                 .platform_data          = &rt3352_ehci_data,
 363         },
 364 };
 365
 366 static struct resource rt3352_ohci_resources[] = {
 367         {
 368                 .start  = RT3352_OHCI_BASE,
 369                 .end    = RT3352_OHCI_BASE + RT3352_OHCI_SIZE - 1,
 370                 .flags  = IORESOURCE_MEM,
 371         }, {
 372                 .start  = RT305X_INTC_IRQ_OTG,
 373                 .end    = RT305X_INTC_IRQ_OTG,
 374                 .flags  = IORESOURCE_IRQ,
 375         },
 376 };
 377
 378 static struct rt3883_ohci_platform_data rt3352_ohci_data = {
 379         .start_hw       = rt3352_usb_host_start,
 380         .stop_hw        = rt3352_usb_host_stop,
 381 };
 382
 383 static u64 rt3352_ohci_dmamask = DMA_BIT_MASK(32);
 384 static struct platform_device rt3352_ohci_device = {
 385         .name           = "rt3883-ohci",
 386         .id             = -1,
 387         .resource       = rt3352_ohci_resources,
 388         .num_resources  = ARRAY_SIZE(rt3352_ohci_resources),
 389         .dev            = {
 390                 .dma_mask               = &rt3352_ohci_dmamask,
 391                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 392                 .platform_data          = &rt3352_ohci_data,
 393         },
 394 };
 395
 396 void __init rt305x_register_usb(void)
 397 {
 398         if (soc_is_rt305x() || soc_is_rt3350()) {
 399                 platform_device_register(&rt305x_dwc_otg_device);
 400         } else if (soc_is_rt3352()) {
 401                 platform_device_register(&rt3352_ehci_device);
 402                 platform_device_register(&rt3352_ohci_device);
 403         } else {
 404                 BUG();
 405         }
 406 }