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         /* All ports are LAN ports. */
 160         .vlan_config            = RT305X_ESW_VLAN_CONFIG_NONE,
 161         .reg_initval_fct2       = 0x00d6500c,
 162         /*
 163          * ext phy base addr 31, enable port 5 polling, rx/tx clock skew 1,
 164          * turbo mii off, rgmi 3.3v off
 165          * port5: disabled
 166          * port6: enabled, gige, full-duplex, rx/tx-flow-control
 167          */
 168         .reg_initval_fpa2       = 0x3f502b28,
 169 };
 170
 171 static struct platform_device rt305x_esw_device = {
 172         .name           = "rt305x-esw",
 173         .resource       = rt305x_esw_resources,
 174         .num_resources  = ARRAY_SIZE(rt305x_esw_resources),
 175         .dev = {
 176                 .platform_data = &rt305x_esw_data,
 177         }
 178 };
 179
 180 void __init rt305x_register_ethernet(void)
 181 {
 182         struct clk *clk;
 183
 184         clk = clk_get(NULL, "sys");
 185         if (IS_ERR(clk))
 186                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 187
 188         ramips_eth_data.sys_freq = clk_get_rate(clk);
 189
 190         platform_device_register(&rt305x_esw_device);
 191         platform_device_register(&rt305x_eth_device);
 192 }
 193
 194 static struct resource rt305x_wifi_resources[] = {
 195         {
 196                 .start  = RT305X_WMAC_BASE,
 197                 .end    = RT305X_WMAC_BASE + 0x3FFFF,
 198                 .flags  = IORESOURCE_MEM,
 199         }, {
 200                 .start  = RT305X_CPU_IRQ_WNIC,
 201                 .end    = RT305X_CPU_IRQ_WNIC,
 202                 .flags  = IORESOURCE_IRQ,
 203         },
 204 };
 205
 206 static struct rt2x00_platform_data rt305x_wifi_data;
 207 static struct platform_device rt305x_wifi_device = {
 208         .name                   = "rt2800_wmac",
 209         .resource               = rt305x_wifi_resources,
 210         .num_resources  = ARRAY_SIZE(rt305x_wifi_resources),
 211         .dev = {
 212                 .platform_data = &rt305x_wifi_data,
 213         }
 214 };
 215
 216 void __init rt305x_register_wifi(void)
 217 {
 218         u32 t;
 219         rt305x_wifi_data.eeprom_file_name = "RT305X.eeprom";
 220
 221         if (soc_is_rt3352() || soc_is_rt5350()) {
 222                 t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 223                 t &= RT3352_SYSCFG0_XTAL_SEL;
 224                 if (!t)
 225                         rt305x_wifi_data.clk_is_20mhz = 1;
 226         }
 227         platform_device_register(&rt305x_wifi_device);
 228 }
 229
 230 static struct resource rt305x_wdt_resources[] = {
 231         {
 232                 .start  = RT305X_TIMER_BASE,
 233                 .end    = RT305X_TIMER_BASE + RT305X_TIMER_SIZE - 1,
 234                 .flags  = IORESOURCE_MEM,
 235         },
 236 };
 237
 238 static struct platform_device rt305x_wdt_device = {
 239         .name           = "ramips-wdt",
 240         .id             = -1,
 241         .resource       = rt305x_wdt_resources,
 242         .num_resources  = ARRAY_SIZE(rt305x_wdt_resources),
 243 };
 244
 245 void __init rt305x_register_wdt(void)
 246 {
 247         u32 t;
 248
 249         /* enable WDT reset output on pin SRAM_CS_N */
 250         t = rt305x_sysc_rr(SYSC_REG_SYSTEM_CONFIG);
 251         t |= RT305X_SYSCFG_SRAM_CS0_MODE_WDT <<
 252              RT305X_SYSCFG_SRAM_CS0_MODE_SHIFT;
 253         rt305x_sysc_wr(t, SYSC_REG_SYSTEM_CONFIG);
 254
 255         platform_device_register(&rt305x_wdt_device);
 256 }
 257
 258 static struct resource rt305x_spi_resources[] = {
 259         {
 260                 .flags  = IORESOURCE_MEM,
 261                 .start  = RT305X_SPI_BASE,
 262                 .end    = RT305X_SPI_BASE + RT305X_SPI_SIZE - 1,
 263         },
 264 };
 265
 266 static struct platform_device rt305x_spi_device = {
 267         .name           = "ramips-spi",
 268         .id             = 0,
 269         .resource       = rt305x_spi_resources,
 270         .num_resources  = ARRAY_SIZE(rt305x_spi_resources),
 271 };
 272
 273 void __init rt305x_register_spi(struct spi_board_info *info, int n)
 274 {
 275         spi_register_board_info(info, n);
 276         platform_device_register(&rt305x_spi_device);
 277 }
 278
 279 static struct resource rt305x_dwc_otg_resources[] = {
 280         {
 281                 .start  = RT305X_OTG_BASE,
 282                 .end    = RT305X_OTG_BASE + 0x3FFFF,
 283                 .flags  = IORESOURCE_MEM,
 284         }, {
 285                 .start  = RT305X_INTC_IRQ_OTG,
 286                 .end    = RT305X_INTC_IRQ_OTG,
 287                 .flags  = IORESOURCE_IRQ,
 288         },
 289 };
 290
 291 static struct platform_device rt305x_dwc_otg_device = {
 292         .name                   = "dwc_otg",
 293         .resource               = rt305x_dwc_otg_resources,
 294         .num_resources  = ARRAY_SIZE(rt305x_dwc_otg_resources),
 295         .dev = {
 296                 .platform_data = NULL,
 297         }
 298 };
 299
 300 static atomic_t rt3352_usb_use_count = ATOMIC_INIT(0);
 301
 302 static void rt3352_usb_host_start(void)
 303 {
 304         u32 t;
 305
 306         if (atomic_inc_return(&rt3352_usb_use_count) != 1)
 307                 return;
 308
 309         t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
 310
 311         /* enable clock for port0's and port1's phys */
 312         t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
 313         t = t | RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN;
 314         rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
 315         mdelay(500);
 316
 317         /* pull USBHOST and USBDEV out from reset */
 318         t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
 319         t &= ~(RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV);
 320         rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
 321         mdelay(500);
 322
 323         /* enable host mode */
 324         t = rt305x_sysc_rr(RT3352_SYSC_REG_SYSCFG1);
 325         t |= RT3352_SYSCFG1_USB0_HOST_MODE;
 326         rt305x_sysc_wr(t, RT3352_SYSC_REG_SYSCFG1);
 327
 328         t = rt305x_sysc_rr(RT3352_SYSC_REG_USB_PS);
 329 }
 330
 331 static void rt3352_usb_host_stop(void)
 332 {
 333         u32 t;
 334
 335         if (atomic_dec_return(&rt3352_usb_use_count) != 0)
 336                 return;
 337
 338         /* put USBHOST and USBDEV into reset */
 339         t = rt305x_sysc_rr(RT3352_SYSC_REG_RSTCTRL);
 340         t |= RT3352_RSTCTRL_UHST | RT3352_RSTCTRL_UDEV;
 341         rt305x_sysc_wr(t, RT3352_SYSC_REG_RSTCTRL);
 342         udelay(10000);
 343
 344         /* disable clock for port0's and port1's phys*/
 345         t = rt305x_sysc_rr(RT3352_SYSC_REG_CLKCFG1);
 346         t &= ~(RT3352_CLKCFG1_UPHY0_CLK_EN | RT3352_CLKCFG1_UPHY1_CLK_EN);
 347         rt305x_sysc_wr(t, RT3352_SYSC_REG_CLKCFG1);
 348         udelay(10000);
 349 }
 350
 351 static struct rt3883_ehci_platform_data rt3352_ehci_data = {
 352         .start_hw       = rt3352_usb_host_start,
 353         .stop_hw        = rt3352_usb_host_stop,
 354 };
 355
 356 static struct resource rt3352_ehci_resources[] = {
 357         {
 358                 .start  = RT3352_EHCI_BASE,
 359                 .end    = RT3352_EHCI_BASE + RT3352_EHCI_SIZE - 1,
 360                 .flags  = IORESOURCE_MEM,
 361         }, {
 362                 .start  = RT305X_INTC_IRQ_OTG,
 363                 .end    = RT305X_INTC_IRQ_OTG,
 364                 .flags  = IORESOURCE_IRQ,
 365         },
 366 };
 367
 368 static u64 rt3352_ehci_dmamask = DMA_BIT_MASK(32);
 369 static struct platform_device rt3352_ehci_device = {
 370         .name           = "rt3883-ehci",
 371         .id             = -1,
 372         .resource       = rt3352_ehci_resources,
 373         .num_resources  = ARRAY_SIZE(rt3352_ehci_resources),
 374         .dev            = {
 375                 .dma_mask               = &rt3352_ehci_dmamask,
 376                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 377                 .platform_data          = &rt3352_ehci_data,
 378         },
 379 };
 380
 381 static struct resource rt3352_ohci_resources[] = {
 382         {
 383                 .start  = RT3352_OHCI_BASE,
 384                 .end    = RT3352_OHCI_BASE + RT3352_OHCI_SIZE - 1,
 385                 .flags  = IORESOURCE_MEM,
 386         }, {
 387                 .start  = RT305X_INTC_IRQ_OTG,
 388                 .end    = RT305X_INTC_IRQ_OTG,
 389                 .flags  = IORESOURCE_IRQ,
 390         },
 391 };
 392
 393 static struct rt3883_ohci_platform_data rt3352_ohci_data = {
 394         .start_hw       = rt3352_usb_host_start,
 395         .stop_hw        = rt3352_usb_host_stop,
 396 };
 397
 398 static u64 rt3352_ohci_dmamask = DMA_BIT_MASK(32);
 399 static struct platform_device rt3352_ohci_device = {
 400         .name           = "rt3883-ohci",
 401         .id             = -1,
 402         .resource       = rt3352_ohci_resources,
 403         .num_resources  = ARRAY_SIZE(rt3352_ohci_resources),
 404         .dev            = {
 405                 .dma_mask               = &rt3352_ohci_dmamask,
 406                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 407                 .platform_data          = &rt3352_ohci_data,
 408         },
 409 };
 410
 411 void __init rt305x_register_usb(void)
 412 {
 413         if (soc_is_rt305x() || soc_is_rt3350()) {
 414                 platform_device_register(&rt305x_dwc_otg_device);
 415         } else if (soc_is_rt3352() || soc_is_rt5350()) {
 416                 platform_device_register(&rt3352_ehci_device);
 417                 platform_device_register(&rt3352_ohci_device);
 418         } else {
 419                 BUG();
 420         }
 421 }