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 #include <linux/usb/ehci_pdriver.h>
  22 #include <linux/usb/ohci_pdriver.h>
  23
  24 #include <asm/addrspace.h>
  25
  26 #include <asm/mach-ralink/rt305x.h>
  27 #include <asm/mach-ralink/rt305x_regs.h>
  28 #include "devices.h"
  29
  30 #include <ramips_eth_platform.h>
  31 #include <rt305x_esw_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         u32 reset_bits = RT305X_RESET_FE;
 120
 121         if (soc_is_rt5350())
 122                 reset_bits |= RT305X_RESET_ESW;
 123         rt305x_sysc_wr(reset_bits, SYSC_REG_RESET_CTRL);
 124         rt305x_sysc_wr(0, SYSC_REG_RESET_CTRL);
 125 }
 126
 127 static struct resource rt305x_eth_resources[] = {
 128         {
 129                 .start  = RT305X_FE_BASE,
 130                 .end    = RT305X_FE_BASE + PAGE_SIZE - 1,
 131                 .flags  = IORESOURCE_MEM,
 132         }, {
 133                 .start  = RT305X_CPU_IRQ_FE,
 134                 .end    = RT305X_CPU_IRQ_FE,
 135                 .flags  = IORESOURCE_IRQ,
 136         },
 137 };
 138
 139 static struct ramips_eth_platform_data ramips_eth_data = {
 140         .mac = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 141         .reset_fe = rt305x_fe_reset,
 142         .min_pkt_len = 64,
 143 };
 144
 145 static struct platform_device rt305x_eth_device = {
 146         .name           = "ramips_eth",
 147         .resource       = rt305x_eth_resources,
 148         .num_resources  = ARRAY_SIZE(rt305x_eth_resources),
 149         .dev = {
 150                 .platform_data = &ramips_eth_data,
 151         }
 152 };
 153
 154 static struct resource rt305x_esw_resources[] = {
 155         {
 156                 .start  = RT305X_SWITCH_BASE,
 157                 .end    = RT305X_SWITCH_BASE + PAGE_SIZE - 1,
 158                 .flags  = IORESOURCE_MEM,
 159         },
 160 };
 161
 162 struct rt305x_esw_platform_data rt305x_esw_data = {
 163         /* All ports are LAN ports. */
 164         .vlan_config            = RT305X_ESW_VLAN_CONFIG_NONE,
 165         .reg_initval_fct2       = 0x00d6500c,
 166         /*
 167          * ext phy base addr 31, enable port 5 polling, rx/tx clock skew 1,
 168          * turbo mii off, rgmi 3.3v off
 169          * port5: disabled
 170          * port6: enabled, gige, full-duplex, rx/tx-flow-control
 171          */
 172         .reg_initval_fpa2       = 0x3f502b28,
 173 };
 174
 175 static struct platform_device rt305x_esw_device = {
 176         .name           = "rt305x-esw",
 177         .resource       = rt305x_esw_resources,
 178         .num_resources  = ARRAY_SIZE(rt305x_esw_resources),
 179         .dev = {
 180                 .platform_data = &rt305x_esw_data,
 181         }
 182 };
 183
 184 void __init rt305x_register_ethernet(void)
 185 {
 186         struct clk *clk;
 187
 188         clk = clk_get(NULL, "sys");
 189         if (IS_ERR(clk))
 190                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 191
 192         ramips_eth_data.sys_freq = clk_get_rate(clk);
 193
 194         platform_device_register(&rt305x_esw_device);
 195         platform_device_register(&rt305x_eth_device);
 196 }
 197
 198 static struct resource rt305x_wifi_resources[] = {
 199         {
 200                 .start  = RT305X_WMAC_BASE,
 201                 .end    = RT305X_WMAC_BASE + 0x3FFFF,
 202                 .flags  = IORESOURCE_MEM,
 203         }, {
 204                 .start  = RT305X_CPU_IRQ_WNIC,
 205                 .end    = RT305X_CPU_IRQ_WNIC,
 206                 .flags  = IORESOURCE_IRQ,
 207         },
 208 };
 209
 210 static struct rt2x00_platform_data rt305x_wifi_data;
 211 static struct platform_device rt305x_wifi_device = {
 212         .name                   = "rt2800_wmac",
 213         .resource               = rt305x_wifi_resources,
 214         .num_resources  = ARRAY_SIZE(rt305x_wifi_resources),
 215         .dev = {
 216                 .platform_data = &rt305x_wifi_data,
 217         }
 218 };
 219
 220 void __init rt305x_register_wifi(void)
 221 {
 222         u32 t;
 223
 224         rt305x_wifi_data.eeprom_file_name = "soc_wmac.eeprom";
 225
 226         if (soc_is_rt3352() || soc_is_rt5350()) {
 227                 t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 228                 t &= RT3352_SYSCFG0_XTAL_SEL;
 229                 if (!t)
 230                         rt305x_wifi_data.clk_is_20mhz = 1;
 231         }
 232         platform_device_register(&rt305x_wifi_device);
 233 }
 234
 235 static struct resource rt305x_wdt_resources[] = {
 236         {
 237                 .start  = RT305X_TIMER_BASE,
 238                 .end    = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
 239                 .flags  = IORESOURCE_MEM,
 240         },
 241 };
 242
 243 static struct platform_device rt305x_wdt_device = {
 244         .name           = "ramips-wdt",
 245         .id             = -1,
 246         .resource       = rt305x_wdt_resources,
 247         .num_resources  = ARRAY_SIZE(rt305x_wdt_resources),
 248 };
 249
 250 void __init rt305x_register_wdt(void)
 251 {
 252         u32 t;
 253
 254         /* enable WDT reset output on pin SRAM_CS_N */
 255         t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 256         t |= RT305X_SYSCFG_SRAM_CS0_MODE_WDT <<
 257              RT305X_SYSCFG_SRAM_CS0_MODE_SHIFT;
 258         rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
 259
 260         platform_device_register(&rt305x_wdt_device);
 261 }
 262
 263 static struct resource rt305x_spi_resources[] = {
 264         {
 265                 .flags  = IORESOURCE_MEM,
 266                 .start  = RT305X_SPI_BASE,
 267                 .end    = RT305X_SPI_BASE + RT305X_SPI_SIZE - 1,
 268         },
 269 };
 270
 271 static struct platform_device rt305x_spi_device = {
 272         .name           = "ramips-spi",
 273         .id             = 0,
 274         .resource       = rt305x_spi_resources,
 275         .num_resources  = ARRAY_SIZE(rt305x_spi_resources),
 276 };
 277
 278 void __init rt305x_register_spi(struct spi_board_info *info, int n)
 279 {
 280         spi_register_board_info(info, n);
 281         platform_device_register(&rt305x_spi_device);
 282 }
 283
 284 static struct resource rt305x_dwc_otg_resources[] = {
 285         {
 286                 .start  = RT305X_OTG_BASE,
 287                 .end    = RT305X_OTG_BASE + 0x3FFFF,
 288                 .flags  = IORESOURCE_MEM,
 289         }, {
 290                 .start  = RT305X_INTC_IRQ_OTG,
 291                 .end    = RT305X_INTC_IRQ_OTG,
 292                 .flags  = IORESOURCE_IRQ,
 293         },
 294 };
 295
 296 static struct platform_device rt305x_dwc_otg_device = {
 297         .name                   = "dwc_otg",
 298         .resource               = rt305x_dwc_otg_resources,
 299         .num_resources  = ARRAY_SIZE(rt305x_dwc_otg_resources),
 300         .dev = {
 301                 .platform_data = NULL,
 302         }
 303 };
 304
 305 static atomic_t rt3352_usb_pwr_ref = ATOMIC_INIT(0);
 306
 307 static int rt3352_usb_power_on(struct platform_device *pdev)
 308 {
 309
 310         if (atomic_inc_return(&rt3352_usb_pwr_ref) == 1) {
 311                 u32 t;
 312
 313                 t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
 314
 315                 /* enable clock for port0's and port1's phys */
 316                 t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
 317                 t |= RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN;
 318                 rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
 319                 mdelay(500);
 320
 321                 /* pull USBHOST and USBDEV out from reset */
 322                 t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
 323                 t &= ~(RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV);
 324                 rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
 325                 mdelay(500);
 326
 327                 /* enable host mode */
 328                 t = rt305x_sysc_rr(RT3352_SYSC_REG_SYSCFG1);
 329                 t |= RT3352_SYSCFG1_USB0_HOST_MODE;
 330                 rt305x_sysc_wr(t, RT3352_SYSC_REG_SYSCFG1);
 331
 332                 t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
 333         }
 334
 335         return 0;
 336 }
 337
 338 static void rt3352_usb_power_off(struct platform_device *pdev)
 339 {
 340
 341         if (atomic_dec_return(&rt3352_usb_pwr_ref) == 0) {
 342                 u32 t;
 343
 344                 /* put USBHOST and USBDEV into reset */
 345                 t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
 346                 t |= RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV;
 347                 rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
 348                 udelay(10000);
 349
 350                 /* disable clock for port0's and port1's phys*/
 351                 t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
 352                 t &= ~(RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN);
 353                 rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
 354                 udelay(10000);
 355         }
 356 }
 357
 358 static struct usb_ehci_pdata rt3352_ehci_data = {
 359         .power_on       = rt3352_usb_power_on,
 360         .power_off      = rt3352_usb_power_off,
 361 };
 362
 363 static struct resource rt3352_ehci_resources[] = {
 364         {
 365                 .start  = RT3352_EHCI_BASE,
 366                 .end    = RT3352_EHCI_BASE + RT3352_EHCI_SIZE - 1,
 367                 .flags  = IORESOURCE_MEM,
 368         }, {
 369                 .start  = RT305X_INTC_IRQ_OTG,
 370                 .end    = RT305X_INTC_IRQ_OTG,
 371                 .flags  = IORESOURCE_IRQ,
 372         },
 373 };
 374
 375 static u64 rt3352_ehci_dmamask = DMA_BIT_MASK(32);
 376 static struct platform_device rt3352_ehci_device = {
 377         .name           = "ehci-platform",
 378         .id             = -1,
 379         .resource       = rt3352_ehci_resources,
 380         .num_resources  = ARRAY_SIZE(rt3352_ehci_resources),
 381         .dev            = {
 382                 .dma_mask               = &rt3352_ehci_dmamask,
 383                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 384                 .platform_data          = &rt3352_ehci_data,
 385         },
 386 };
 387
 388 static struct resource rt3352_ohci_resources[] = {
 389         {
 390                 .start  = RT3352_OHCI_BASE,
 391                 .end    = RT3352_OHCI_BASE + RT3352_OHCI_SIZE - 1,
 392                 .flags  = IORESOURCE_MEM,
 393         }, {
 394                 .start  = RT305X_INTC_IRQ_OTG,
 395                 .end    = RT305X_INTC_IRQ_OTG,
 396                 .flags  = IORESOURCE_IRQ,
 397         },
 398 };
 399
 400 static struct usb_ohci_pdata rt3352_ohci_data = {
 401         .power_on       = rt3352_usb_power_on,
 402         .power_off      = rt3352_usb_power_off,
 403 };
 404
 405 static u64 rt3352_ohci_dmamask = DMA_BIT_MASK(32);
 406 static struct platform_device rt3352_ohci_device = {
 407         .name           = "ohci-platform",
 408         .id             = -1,
 409         .resource       = rt3352_ohci_resources,
 410         .num_resources  = ARRAY_SIZE(rt3352_ohci_resources),
 411         .dev            = {
 412                 .dma_mask               = &rt3352_ohci_dmamask,
 413                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 414                 .platform_data          = &rt3352_ohci_data,
 415         },
 416 };
 417
 418 void __init rt305x_register_usb(void)
 419 {
 420         if (soc_is_rt305x() || soc_is_rt3350()) {
 421                 platform_device_register(&rt305x_dwc_otg_device);
 422         } else if (soc_is_rt3352() || soc_is_rt5350()) {
 423                 platform_device_register(&rt3352_ehci_device);
 424                 platform_device_register(&rt3352_ohci_device);
 425         } else {
 426                 BUG();
 427         }
 428 }