target/linux/ramips/files-3.7/arch/mips/ralink/rt3883/devices.c

   1 /*
   2  *  Ralink RT3662/RT3883 SoC platform device registration
   3  *
   4  *  Copyright (C) 2011-2012 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/mtd/mtd.h>
  14 #include <linux/mtd/physmap.h>
  15 #include <linux/mtd/partitions.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/spi/spi.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/rt2x00_platform.h>
  22 #include <linux/usb/ehci_pdriver.h>
  23 #include <linux/usb/ohci_pdriver.h>
  24
  25 #include <asm/addrspace.h>
  26
  27 #include <asm/mach-ralink/rt3883.h>
  28 #include <asm/mach-ralink/rt3883_regs.h>
  29 #include <asm/mach-ralink/ramips_nand_platform.h>
  30 #include "devices.h"
  31
  32 #include <ramips_eth_platform.h>
  33
  34 static struct resource rt3883_flash0_resources[] = {
  35         {
  36                 .flags  = IORESOURCE_MEM,
  37                 .start  = RT3883_BOOT_BASE,
  38                 .end    = RT3883_BOOT_BASE + RT3883_BOOT_SIZE - 1,
  39         },
  40 };
  41
  42 struct physmap_flash_data rt3883_flash0_data;
  43 static struct platform_device rt3883_flash0_device = {
  44         .name           = "physmap-flash",
  45         .resource       = rt3883_flash0_resources,
  46         .num_resources  = ARRAY_SIZE(rt3883_flash0_resources),
  47         .dev = {
  48                 .platform_data = &rt3883_flash0_data,
  49         },
  50 };
  51
  52 static struct resource rt3883_flash1_resources[] = {
  53         {
  54                 .flags  = IORESOURCE_MEM,
  55                 .start  = RT3883_SRAM_BASE,
  56                 .end    = RT3883_SRAM_BASE + RT3883_SRAM_SIZE - 1,
  57         },
  58 };
  59
  60 struct physmap_flash_data rt3883_flash1_data;
  61 static struct platform_device rt3883_flash1_device = {
  62         .name           = "physmap-flash",
  63         .resource       = rt3883_flash1_resources,
  64         .num_resources  = ARRAY_SIZE(rt3883_flash1_resources),
  65         .dev = {
  66                 .platform_data = &rt3883_flash1_data,
  67         },
  68 };
  69
  70 static int rt3883_flash_instance __initdata;
  71 void __init rt3883_register_pflash(unsigned int id)
  72 {
  73         struct platform_device *pdev;
  74         struct physmap_flash_data *pdata;
  75         void __iomem *fscc_base;
  76         u32 t;
  77         int reg;
  78
  79         switch (id) {
  80         case 0:
  81                 pdev = &rt3883_flash0_device;
  82                 reg = RT3883_FSCC_REG_FLASH_CFG0;
  83                 break;
  84         case 1:
  85                 pdev = &rt3883_flash1_device;
  86                 reg = RT3883_FSCC_REG_FLASH_CFG1;
  87                 break;
  88         default:
  89                 return;
  90         }
  91
  92         pdata = pdev->dev.platform_data;
  93
  94         fscc_base = ioremap(RT3883_FSCC_BASE, RT3883_FSCC_SIZE);
  95         if (!fscc_base)
  96                 panic("RT3883: ioremap failed for FSCC");
  97
  98         t = __raw_readl(fscc_base + reg);
  99         iounmap(fscc_base);
 100
 101         t = (t >> RT3883_FLASH_CFG_WIDTH_SHIFT) & RT3883_FLASH_CFG_WIDTH_MASK;
 102         switch (t) {
 103         case RT3883_FLASH_CFG_WIDTH_8BIT:
 104                 pdata->width = 1;
 105                 break;
 106         case RT3883_FLASH_CFG_WIDTH_16BIT:
 107                 pdata->width = 2;
 108                 break;
 109         case RT3883_FLASH_CFG_WIDTH_32BIT:
 110                 if (id == 1) {
 111                         pdata->width = 4;
 112                         break;
 113                 }
 114                 /* fallthrough */
 115         default:
 116                 pr_warn("RT3883: flash bank%d: invalid width detected\n", id);
 117                 return;
 118         }
 119
 120         pdev->id = rt3883_flash_instance;
 121
 122         platform_device_register(pdev);
 123         rt3883_flash_instance++;
 124 }
 125
 126 static atomic_t rt3883_usb_pwr_ref = ATOMIC_INIT(0);
 127
 128 static int rt3883_usb_power_on(struct platform_device *pdev)
 129 {
 130
 131         if (atomic_inc_return(&rt3883_usb_pwr_ref) == 1) {
 132                 u32 t;
 133
 134                 t = rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS);
 135
 136                 /* enable clock for port0's and port1's phys */
 137                 t = rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1);
 138                 t |= RT3883_CLKCFG1_UPHY0_CLK_EN | RT3883_CLKCFG1_UPHY1_CLK_EN;
 139                 rt3883_sysc_wr(t, RT3883_SYSC_REG_CLKCFG1);
 140                 mdelay(500);
 141
 142                 /* pull USBHOST and USBDEV out from reset */
 143                 t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL);
 144                 t &= ~(RT3883_RSTCTRL_UHST | RT3883_RSTCTRL_UDEV);
 145                 rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL);
 146                 mdelay(500);
 147
 148                 /* enable host mode */
 149                 t = rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1);
 150                 t |= RT3883_SYSCFG1_USB0_HOST_MODE;
 151                 rt3883_sysc_wr(t, RT3883_SYSC_REG_SYSCFG1);
 152
 153                 t = rt3883_sysc_rr(RT3883_SYSC_REG_USB_PS);
 154         }
 155
 156         return 0;
 157 }
 158
 159 static void rt3883_usb_power_off(struct platform_device *pdev)
 160 {
 161         if (atomic_dec_return(&rt3883_usb_pwr_ref) == 0) {
 162                 u32 t;
 163
 164                 /* put USBHOST and USBDEV into reset */
 165                 t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL);
 166                 t |= RT3883_RSTCTRL_UHST | RT3883_RSTCTRL_UDEV;
 167                 rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL);
 168                 udelay(10000);
 169
 170                 /* disable clock for port0's and port1's phys*/
 171                 t = rt3883_sysc_rr(RT3883_SYSC_REG_CLKCFG1);
 172                 t &= ~(RT3883_CLKCFG1_UPHY0_CLK_EN |
 173                        RT3883_CLKCFG1_UPHY1_CLK_EN);
 174                 rt3883_sysc_wr(t, RT3883_SYSC_REG_CLKCFG1);
 175                 udelay(10000);
 176         }
 177 }
 178
 179 static struct usb_ehci_pdata rt3883_ehci_data = {
 180         .power_on       = rt3883_usb_power_on,
 181         .power_off      = rt3883_usb_power_off,
 182 };
 183
 184 static struct resource rt3883_ehci_resources[] = {
 185         {
 186                 .start  = RT3883_EHCI_BASE,
 187                 .end    = RT3883_EHCI_BASE + PAGE_SIZE - 1,
 188                 .flags  = IORESOURCE_MEM,
 189         }, {
 190                 .start  = RT3883_INTC_IRQ_UHST,
 191                 .end    = RT3883_INTC_IRQ_UHST,
 192                 .flags  = IORESOURCE_IRQ,
 193         },
 194 };
 195
 196 static u64 rt3883_ehci_dmamask = DMA_BIT_MASK(32);
 197 static struct platform_device rt3883_ehci_device = {
 198         .name           = "ehci-platform",
 199         .id             = -1,
 200         .resource       = rt3883_ehci_resources,
 201         .num_resources  = ARRAY_SIZE(rt3883_ehci_resources),
 202         .dev            = {
 203                 .dma_mask               = &rt3883_ehci_dmamask,
 204                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 205                 .platform_data          = &rt3883_ehci_data,
 206         },
 207 };
 208
 209 static struct resource rt3883_ohci_resources[] = {
 210         {
 211                 .start  = RT3883_OHCI_BASE,
 212                 .end    = RT3883_OHCI_BASE + PAGE_SIZE - 1,
 213                 .flags  = IORESOURCE_MEM,
 214         }, {
 215                 .start  = RT3883_INTC_IRQ_UHST,
 216                 .end    = RT3883_INTC_IRQ_UHST,
 217                 .flags  = IORESOURCE_IRQ,
 218         },
 219 };
 220
 221 static struct usb_ohci_pdata rt3883_ohci_data = {
 222         .power_on       = rt3883_usb_power_on,
 223         .power_off      = rt3883_usb_power_off,
 224 };
 225
 226 static u64 rt3883_ohci_dmamask = DMA_BIT_MASK(32);
 227 static struct platform_device rt3883_ohci_device = {
 228         .name           = "ohci-platform",
 229         .id             = -1,
 230         .resource       = rt3883_ohci_resources,
 231         .num_resources  = ARRAY_SIZE(rt3883_ohci_resources),
 232         .dev            = {
 233                 .dma_mask               = &rt3883_ohci_dmamask,
 234                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 235                 .platform_data          = &rt3883_ohci_data,
 236         },
 237 };
 238
 239 void __init rt3883_register_usbhost(void)
 240 {
 241         platform_device_register(&rt3883_ehci_device);
 242         platform_device_register(&rt3883_ohci_device);
 243 }
 244
 245 static void rt3883_fe_reset(void)
 246 {
 247         u32 t;
 248
 249         t = rt3883_sysc_rr(RT3883_SYSC_REG_RSTCTRL);
 250         t |= RT3883_RSTCTRL_FE;
 251         rt3883_sysc_wr(t , RT3883_SYSC_REG_RSTCTRL);
 252
 253         t &= ~RT3883_RSTCTRL_FE;
 254         rt3883_sysc_wr(t, RT3883_SYSC_REG_RSTCTRL);
 255 }
 256
 257 static struct resource rt3883_eth_resources[] = {
 258         {
 259                 .start  = RT3883_FE_BASE,
 260                 .end    = RT3883_FE_BASE + PAGE_SIZE - 1,
 261                 .flags  = IORESOURCE_MEM,
 262         }, {
 263                 .start  = RT3883_CPU_IRQ_FE,
 264                 .end    = RT3883_CPU_IRQ_FE,
 265                 .flags  = IORESOURCE_IRQ,
 266         },
 267 };
 268
 269 struct ramips_eth_platform_data rt3883_eth_data = {
 270         .mac            = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
 271         .reset_fe       = rt3883_fe_reset,
 272         .min_pkt_len    = 64,
 273 };
 274
 275 static struct platform_device rt3883_eth_device = {
 276         .name           = "ramips_eth",
 277         .resource       = rt3883_eth_resources,
 278         .num_resources  = ARRAY_SIZE(rt3883_eth_resources),
 279         .dev = {
 280                 .platform_data = &rt3883_eth_data,
 281         }
 282 };
 283
 284 void __init rt3883_register_ethernet(void)
 285 {
 286         struct clk *clk;
 287
 288         clk = clk_get(NULL, "sys");
 289         if (IS_ERR(clk))
 290                 panic("unable to get SYS clock, err=%ld", PTR_ERR(clk));
 291
 292         rt3883_eth_data.sys_freq = clk_get_rate(clk);
 293
 294         platform_device_register(&rt3883_eth_device);
 295 }
 296
 297 static struct resource rt3883_wlan_resources[] = {
 298         {
 299                 .start  = RT3883_WLAN_BASE,
 300                 .end    = RT3883_WLAN_BASE + 0x3FFFF,
 301                 .flags  = IORESOURCE_MEM,
 302         }, {
 303                 .start  = RT3883_CPU_IRQ_WLAN,
 304                 .end    = RT3883_CPU_IRQ_WLAN,
 305                 .flags  = IORESOURCE_IRQ,
 306         },
 307 };
 308
 309 struct rt2x00_platform_data rt3883_wlan_data;
 310 static struct platform_device rt3883_wlan_device = {
 311         .name           = "rt2800_wmac",
 312         .resource       = rt3883_wlan_resources,
 313         .num_resources  = ARRAY_SIZE(rt3883_wlan_resources),
 314         .dev = {
 315                 .platform_data = &rt3883_wlan_data,
 316         }
 317 };
 318
 319 void __init rt3883_register_wlan(void)
 320 {
 321         rt3883_wlan_data.eeprom_file_name = "soc_wmac.eeprom",
 322         platform_device_register(&rt3883_wlan_device);
 323 }
 324
 325 static struct resource rt3883_wdt_resources[] = {
 326         {
 327                 .start  = RT3883_TIMER_BASE,
 328                 .end    = RT3883_TIMER_BASE + RT3883_TIMER_SIZE - 1,
 329                 .flags  = IORESOURCE_MEM,
 330         },
 331 };
 332
 333 static struct platform_device rt3883_wdt_device = {
 334         .name           = "ramips-wdt",
 335         .id             = -1,
 336         .resource       = rt3883_wdt_resources,
 337         .num_resources  = ARRAY_SIZE(rt3883_wdt_resources),
 338 };
 339
 340 void __init rt3883_register_wdt(bool enable_reset)
 341 {
 342         if (enable_reset) {
 343                 u32 t;
 344
 345                 /* enable WDT reset output on GPIO 2 */
 346                 t = rt3883_sysc_rr(RT3883_SYSC_REG_SYSCFG1);
 347                 t |= RT3883_SYSCFG1_GPIO2_AS_WDT_OUT;
 348                 rt3883_sysc_wr(t, RT3883_SYSC_REG_SYSCFG1);
 349         }
 350
 351         platform_device_register(&rt3883_wdt_device);
 352 }
 353
 354 static struct resource rt3883_nand_resources[] = {
 355         {
 356                 .flags  = IORESOURCE_MEM,
 357                 .start  = RT3883_NANDC_BASE,
 358                 .end    = RT3883_NANDC_BASE + RT3883_NANDC_SIZE - 1,
 359         },
 360 };
 361
 362 struct ramips_nand_platform_data rt3883_nand_data;
 363 static struct platform_device rt3883_nand_device = {
 364         .name           = RAMIPS_NAND_DRIVER_NAME,
 365         .id             = -1,
 366         .resource       = rt3883_nand_resources,
 367         .num_resources  = ARRAY_SIZE(rt3883_nand_resources),
 368         .dev    = {
 369                 .platform_data = &rt3883_nand_data,
 370         },
 371 };
 372
 373 void __init rt3883_register_nand(void)
 374 {
 375         platform_device_register(&rt3883_nand_device);
 376 }
 377
 378 static struct resource rt3883_spi_resources[] = {
 379         {
 380                 .flags  = IORESOURCE_MEM,
 381                 .start  = RT3883_SPI_BASE,
 382                 .end    = RT3883_SPI_BASE + RT3883_SPI_SIZE - 1,
 383         },
 384 };
 385
 386 static struct platform_device rt3883_spi_device = {
 387         .name           = "ramips-spi",
 388         .id             = 0,
 389         .resource       = rt3883_spi_resources,
 390         .num_resources  = ARRAY_SIZE(rt3883_spi_resources),
 391 };
 392
 393 void __init rt3883_register_spi(struct spi_board_info *info, int n)
 394 {
 395         spi_register_board_info(info, n);
 396         platform_device_register(&rt3883_spi_device);
 397 }
 398