target/linux/ar71xx/files/arch/mips/ar71xx/devices.c

   1 /*
   2  *  Atheros AR71xx SoC platform devices
   3  *
   4  *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
   5  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   6  *
   7  *  Parts of this file are based on Atheros' 2.6.15 BSP
   8  *
   9  *  This program is free software; you can redistribute it and/or modify it
  10  *  under the terms of the GNU General Public License version 2 as published
  11  *  by the Free Software Foundation.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/delay.h>
  17 #include <linux/etherdevice.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/serial_8250.h>
  20
  21 #include <asm/mach-ar71xx/ar71xx.h>
  22
  23 #include "devices.h"
  24
  25 static u8 ar71xx_mac_base[ETH_ALEN] __initdata;
  26
  27 static struct resource ar71xx_uart_resources[] = {
  28         {
  29                 .start  = AR71XX_UART_BASE,
  30                 .end    = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
  31                 .flags  = IORESOURCE_MEM,
  32         },
  33 };
  34
  35 #define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
  36 static struct plat_serial8250_port ar71xx_uart_data[] = {
  37         {
  38                 .mapbase        = AR71XX_UART_BASE,
  39                 .irq            = AR71XX_MISC_IRQ_UART,
  40                 .flags          = AR71XX_UART_FLAGS,
  41                 .iotype         = UPIO_MEM32,
  42                 .regshift       = 2,
  43         }, {
  44                 /* terminating entry */
  45         }
  46 };
  47
  48 static struct platform_device ar71xx_uart_device = {
  49         .name           = "serial8250",
  50         .id             = PLAT8250_DEV_PLATFORM,
  51         .resource       = ar71xx_uart_resources,
  52         .num_resources  = ARRAY_SIZE(ar71xx_uart_resources),
  53         .dev = {
  54                 .platform_data  = ar71xx_uart_data
  55         },
  56 };
  57
  58 void __init ar71xx_add_device_uart(void)
  59 {
  60         ar71xx_uart_data[0].uartclk = ar71xx_ahb_freq;
  61         platform_device_register(&ar71xx_uart_device);
  62 }
  63
  64 static struct resource ar71xx_mdio_resources[] = {
  65         {
  66                 .name   = "mdio_base",
  67                 .flags  = IORESOURCE_MEM,
  68                 .start  = AR71XX_GE0_BASE,
  69                 .end    = AR71XX_GE0_BASE + 0x200 - 1,
  70         }
  71 };
  72
  73 static struct ag71xx_mdio_platform_data ar71xx_mdio_data;
  74
  75 struct platform_device ar71xx_mdio_device = {
  76         .name           = "ag71xx-mdio",
  77         .id             = -1,
  78         .resource       = ar71xx_mdio_resources,
  79         .num_resources  = ARRAY_SIZE(ar71xx_mdio_resources),
  80         .dev = {
  81                 .platform_data = &ar71xx_mdio_data,
  82         },
  83 };
  84
  85 void __init ar71xx_add_device_mdio(u32 phy_mask)
  86 {
  87         switch (ar71xx_soc) {
  88         case AR71XX_SOC_AR7240:
  89         case AR71XX_SOC_AR7241:
  90         case AR71XX_SOC_AR7242:
  91                 ar71xx_mdio_data.is_ar7240 = 1;
  92                 break;
  93         default:
  94                 break;
  95         }
  96
  97         ar71xx_mdio_data.phy_mask = phy_mask;
  98
  99         platform_device_register(&ar71xx_mdio_device);
 100 }
 101
 102 static void ar71xx_set_pll(u32 cfg_reg, u32 pll_reg, u32 pll_val, u32 shift)
 103 {
 104         void __iomem *base;
 105         u32 t;
 106
 107         base = ioremap_nocache(AR71XX_PLL_BASE, AR71XX_PLL_SIZE);
 108
 109         t = __raw_readl(base + cfg_reg);
 110         t &= ~(3 << shift);
 111         t |=  (2 << shift);
 112         __raw_writel(t, base + cfg_reg);
 113         udelay(100);
 114
 115         __raw_writel(pll_val, base + pll_reg);
 116
 117         t |= (3 << shift);
 118         __raw_writel(t, base + cfg_reg);
 119         udelay(100);
 120
 121         t &= ~(3 << shift);
 122         __raw_writel(t, base + cfg_reg);
 123         udelay(100);
 124
 125         printk(KERN_DEBUG "ar71xx: pll_reg %#x: %#x\n",
 126                 (unsigned int)(base + pll_reg), __raw_readl(base + pll_reg));
 127
 128         iounmap(base);
 129 }
 130
 131 struct ar71xx_eth_pll_data ar71xx_eth0_pll_data;
 132 struct ar71xx_eth_pll_data ar71xx_eth1_pll_data;
 133
 134 static u32 ar71xx_get_eth_pll(unsigned int mac, int speed)
 135 {
 136         struct ar71xx_eth_pll_data *pll_data;
 137         u32 pll_val;
 138
 139         switch (mac) {
 140         case 0:
 141                 pll_data = &ar71xx_eth0_pll_data;
 142                 break;
 143         case 1:
 144                 pll_data = &ar71xx_eth1_pll_data;
 145                 break;
 146         default:
 147                 BUG();
 148         }
 149
 150         switch (speed) {
 151         case SPEED_10:
 152                 pll_val = pll_data->pll_10;
 153                 break;
 154         case SPEED_100:
 155                 pll_val = pll_data->pll_100;
 156                 break;
 157         case SPEED_1000:
 158                 pll_val = pll_data->pll_1000;
 159                 break;
 160         default:
 161                 BUG();
 162         }
 163
 164         return pll_val;
 165 }
 166
 167 static void ar71xx_set_pll_ge0(int speed)
 168 {
 169         u32 val = ar71xx_get_eth_pll(0, speed);
 170
 171         ar71xx_set_pll(AR71XX_PLL_REG_SEC_CONFIG, AR71XX_PLL_REG_ETH0_INT_CLOCK,
 172                         val, AR71XX_ETH0_PLL_SHIFT);
 173 }
 174
 175 static void ar71xx_set_pll_ge1(int speed)
 176 {
 177         u32 val = ar71xx_get_eth_pll(1, speed);
 178
 179         ar71xx_set_pll(AR71XX_PLL_REG_SEC_CONFIG, AR71XX_PLL_REG_ETH1_INT_CLOCK,
 180                          val, AR71XX_ETH1_PLL_SHIFT);
 181 }
 182
 183 static void ar724x_set_pll_ge0(int speed)
 184 {
 185         /* TODO */
 186 }
 187
 188 static void ar724x_set_pll_ge1(int speed)
 189 {
 190         /* TODO */
 191 }
 192
 193 static void ar91xx_set_pll_ge0(int speed)
 194 {
 195         u32 val = ar71xx_get_eth_pll(0, speed);
 196
 197         ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG, AR91XX_PLL_REG_ETH0_INT_CLOCK,
 198                          val, AR91XX_ETH0_PLL_SHIFT);
 199 }
 200
 201 static void ar91xx_set_pll_ge1(int speed)
 202 {
 203         u32 val = ar71xx_get_eth_pll(1, speed);
 204
 205         ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG, AR91XX_PLL_REG_ETH1_INT_CLOCK,
 206                          val, AR91XX_ETH1_PLL_SHIFT);
 207 }
 208
 209 static void ar71xx_ddr_flush_ge0(void)
 210 {
 211         ar71xx_ddr_flush(AR71XX_DDR_REG_FLUSH_GE0);
 212 }
 213
 214 static void ar71xx_ddr_flush_ge1(void)
 215 {
 216         ar71xx_ddr_flush(AR71XX_DDR_REG_FLUSH_GE1);
 217 }
 218
 219 static void ar724x_ddr_flush_ge0(void)
 220 {
 221         ar71xx_ddr_flush(AR724X_DDR_REG_FLUSH_GE0);
 222 }
 223
 224 static void ar724x_ddr_flush_ge1(void)
 225 {
 226         ar71xx_ddr_flush(AR724X_DDR_REG_FLUSH_GE1);
 227 }
 228
 229 static void ar91xx_ddr_flush_ge0(void)
 230 {
 231         ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE0);
 232 }
 233
 234 static void ar91xx_ddr_flush_ge1(void)
 235 {
 236         ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE1);
 237 }
 238
 239 static struct resource ar71xx_eth0_resources[] = {
 240         {
 241                 .name   = "mac_base",
 242                 .flags  = IORESOURCE_MEM,
 243                 .start  = AR71XX_GE0_BASE,
 244                 .end    = AR71XX_GE0_BASE + 0x200 - 1,
 245         }, {
 246                 .name   = "mii_ctrl",
 247                 .flags  = IORESOURCE_MEM,
 248                 .start  = AR71XX_MII_BASE + MII_REG_MII0_CTRL,
 249                 .end    = AR71XX_MII_BASE + MII_REG_MII0_CTRL + 3,
 250         }, {
 251                 .name   = "mac_irq",
 252                 .flags  = IORESOURCE_IRQ,
 253                 .start  = AR71XX_CPU_IRQ_GE0,
 254                 .end    = AR71XX_CPU_IRQ_GE0,
 255         },
 256 };
 257
 258 struct ag71xx_platform_data ar71xx_eth0_data = {
 259         .reset_bit      = RESET_MODULE_GE0_MAC,
 260 };
 261
 262 struct platform_device ar71xx_eth0_device = {
 263         .name           = "ag71xx",
 264         .id             = 0,
 265         .resource       = ar71xx_eth0_resources,
 266         .num_resources  = ARRAY_SIZE(ar71xx_eth0_resources),
 267         .dev = {
 268                 .platform_data = &ar71xx_eth0_data,
 269         },
 270 };
 271
 272 static struct resource ar71xx_eth1_resources[] = {
 273         {
 274                 .name   = "mac_base",
 275                 .flags  = IORESOURCE_MEM,
 276                 .start  = AR71XX_GE1_BASE,
 277                 .end    = AR71XX_GE1_BASE + 0x200 - 1,
 278         }, {
 279                 .name   = "mii_ctrl",
 280                 .flags  = IORESOURCE_MEM,
 281                 .start  = AR71XX_MII_BASE + MII_REG_MII1_CTRL,
 282                 .end    = AR71XX_MII_BASE + MII_REG_MII1_CTRL + 3,
 283         }, {
 284                 .name   = "mac_irq",
 285                 .flags  = IORESOURCE_IRQ,
 286                 .start  = AR71XX_CPU_IRQ_GE1,
 287                 .end    = AR71XX_CPU_IRQ_GE1,
 288         },
 289 };
 290
 291 struct ag71xx_platform_data ar71xx_eth1_data = {
 292         .reset_bit      = RESET_MODULE_GE1_MAC,
 293 };
 294
 295 struct platform_device ar71xx_eth1_device = {
 296         .name           = "ag71xx",
 297         .id             = 1,
 298         .resource       = ar71xx_eth1_resources,
 299         .num_resources  = ARRAY_SIZE(ar71xx_eth1_resources),
 300         .dev = {
 301                 .platform_data = &ar71xx_eth1_data,
 302         },
 303 };
 304
 305 #define AR71XX_PLL_VAL_1000     0x00110000
 306 #define AR71XX_PLL_VAL_100      0x00001099
 307 #define AR71XX_PLL_VAL_10       0x00991099
 308
 309 #define AR724X_PLL_VAL_1000     0x00110000
 310 #define AR724X_PLL_VAL_100      0x00001099
 311 #define AR724X_PLL_VAL_10       0x00991099
 312
 313 #define AR91XX_PLL_VAL_1000     0x1a000000
 314 #define AR91XX_PLL_VAL_100      0x13000a44
 315 #define AR91XX_PLL_VAL_10       0x00441099
 316
 317 static void __init ar71xx_init_eth_pll_data(unsigned int id)
 318 {
 319         struct ar71xx_eth_pll_data *pll_data;
 320         u32 pll_10, pll_100, pll_1000;
 321
 322         switch (id) {
 323         case 0:
 324                 pll_data = &ar71xx_eth0_pll_data;
 325                 break;
 326         case 1:
 327                 pll_data = &ar71xx_eth1_pll_data;
 328                 break;
 329         default:
 330                 BUG();
 331         }
 332
 333         switch (ar71xx_soc) {
 334         case AR71XX_SOC_AR7130:
 335         case AR71XX_SOC_AR7141:
 336         case AR71XX_SOC_AR7161:
 337                 pll_10 = AR71XX_PLL_VAL_10;
 338                 pll_100 = AR71XX_PLL_VAL_100;
 339                 pll_1000 = AR71XX_PLL_VAL_1000;
 340                 break;
 341
 342         case AR71XX_SOC_AR7240:
 343         case AR71XX_SOC_AR7241:
 344         case AR71XX_SOC_AR7242:
 345                 pll_10 = AR724X_PLL_VAL_10;
 346                 pll_100 = AR724X_PLL_VAL_100;
 347                 pll_1000 = AR724X_PLL_VAL_1000;
 348                 break;
 349
 350         case AR71XX_SOC_AR9130:
 351         case AR71XX_SOC_AR9132:
 352                 pll_10 = AR91XX_PLL_VAL_10;
 353                 pll_100 = AR91XX_PLL_VAL_100;
 354                 pll_1000 = AR91XX_PLL_VAL_1000;
 355                 break;
 356         default:
 357                 BUG();
 358         }
 359
 360         if (!pll_data->pll_10)
 361                 pll_data->pll_10 = pll_10;
 362
 363         if (!pll_data->pll_100)
 364                 pll_data->pll_100 = pll_100;
 365
 366         if (!pll_data->pll_1000)
 367                 pll_data->pll_1000 = pll_1000;
 368 }
 369
 370 static int ar71xx_eth_instance __initdata;
 371 void __init ar71xx_add_device_eth(unsigned int id)
 372 {
 373         struct platform_device *pdev;
 374         struct ag71xx_platform_data *pdata;
 375
 376         ar71xx_init_eth_pll_data(id);
 377
 378         switch (id) {
 379         case 0:
 380                 switch (ar71xx_eth0_data.phy_if_mode) {
 381                 case PHY_INTERFACE_MODE_MII:
 382                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_MII;
 383                         break;
 384                 case PHY_INTERFACE_MODE_GMII:
 385                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_GMII;
 386                         break;
 387                 case PHY_INTERFACE_MODE_RGMII:
 388                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_RGMII;
 389                         break;
 390                 case PHY_INTERFACE_MODE_RMII:
 391                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_RMII;
 392                         break;
 393                 default:
 394                         printk(KERN_ERR "ar71xx: invalid PHY interface mode "
 395                                         "for eth0\n");
 396                         return;
 397                 }
 398                 pdev = &ar71xx_eth0_device;
 399                 break;
 400         case 1:
 401                 switch (ar71xx_eth1_data.phy_if_mode) {
 402                 case PHY_INTERFACE_MODE_RMII:
 403                         ar71xx_eth1_data.mii_if = MII1_CTRL_IF_RMII;
 404                         break;
 405                 case PHY_INTERFACE_MODE_RGMII:
 406                         ar71xx_eth1_data.mii_if = MII1_CTRL_IF_RGMII;
 407                         break;
 408                 default:
 409                         printk(KERN_ERR "ar71xx: invalid PHY interface mode "
 410                                         "for eth1\n");
 411                         return;
 412                 }
 413                 pdev = &ar71xx_eth1_device;
 414                 break;
 415         default:
 416                 printk(KERN_ERR "ar71xx: invalid ethernet id %d\n", id);
 417                 return;
 418         }
 419
 420         pdata = pdev->dev.platform_data;
 421
 422         switch (ar71xx_soc) {
 423         case AR71XX_SOC_AR7130:
 424                 pdata->ddr_flush = id ? ar71xx_ddr_flush_ge1
 425                                       : ar71xx_ddr_flush_ge0;
 426                 pdata->set_pll =  id ? ar71xx_set_pll_ge1
 427                                      : ar71xx_set_pll_ge0;
 428                 break;
 429
 430         case AR71XX_SOC_AR7141:
 431         case AR71XX_SOC_AR7161:
 432                 pdata->ddr_flush = id ? ar71xx_ddr_flush_ge1
 433                                       : ar71xx_ddr_flush_ge0;
 434                 pdata->set_pll =  id ? ar71xx_set_pll_ge1
 435                                      : ar71xx_set_pll_ge0;
 436                 pdata->has_gbit = 1;
 437                 break;
 438
 439         case AR71XX_SOC_AR7240:
 440         case AR71XX_SOC_AR7241:
 441         case AR71XX_SOC_AR7242:
 442                 pdata->ddr_flush = id ? ar724x_ddr_flush_ge1
 443                                       : ar724x_ddr_flush_ge0;
 444                 pdata->set_pll =  id ? ar724x_set_pll_ge1
 445                                      : ar724x_set_pll_ge0;
 446                 pdata->is_ar724x = 1;
 447                 break;
 448
 449         case AR71XX_SOC_AR9130:
 450                 pdata->ddr_flush = id ? ar91xx_ddr_flush_ge1
 451                                       : ar91xx_ddr_flush_ge0;
 452                 pdata->set_pll =  id ? ar91xx_set_pll_ge1
 453                                      : ar91xx_set_pll_ge0;
 454                 pdata->is_ar91xx = 1;
 455                 break;
 456
 457         case AR71XX_SOC_AR9132:
 458                 pdata->ddr_flush = id ? ar91xx_ddr_flush_ge1
 459                                       : ar91xx_ddr_flush_ge0;
 460                 pdata->set_pll =  id ? ar91xx_set_pll_ge1
 461                                       : ar91xx_set_pll_ge0;
 462                 pdata->is_ar91xx = 1;
 463                 pdata->has_gbit = 1;
 464                 break;
 465
 466         default:
 467                 BUG();
 468         }
 469
 470         switch (pdata->phy_if_mode) {
 471         case PHY_INTERFACE_MODE_GMII:
 472         case PHY_INTERFACE_MODE_RGMII:
 473                 if (!pdata->has_gbit) {
 474                         printk(KERN_ERR "ar71xx: no gbit available on eth%d\n",
 475                                         id);
 476                         return;
 477                 }
 478                 /* fallthrough */
 479         default:
 480                 break;
 481         }
 482
 483         if (is_valid_ether_addr(ar71xx_mac_base)) {
 484                 memcpy(pdata->mac_addr, ar71xx_mac_base, ETH_ALEN);
 485                 pdata->mac_addr[5] += ar71xx_eth_instance;
 486         } else {
 487                 random_ether_addr(pdata->mac_addr);
 488                 printk(KERN_DEBUG
 489                         "ar71xx: using random MAC address for eth%d\n",
 490                         ar71xx_eth_instance);
 491         }
 492
 493         if (pdata->mii_bus_dev == NULL)
 494                 pdata->mii_bus_dev = &ar71xx_mdio_device.dev;
 495
 496         /* Reset the device */
 497         ar71xx_device_stop(pdata->reset_bit);
 498         mdelay(100);
 499
 500         ar71xx_device_start(pdata->reset_bit);
 501         mdelay(100);
 502
 503         platform_device_register(pdev);
 504         ar71xx_eth_instance++;
 505 }
 506
 507 static struct resource ar71xx_spi_resources[] = {
 508         [0] = {
 509                 .start  = AR71XX_SPI_BASE,
 510                 .end    = AR71XX_SPI_BASE + AR71XX_SPI_SIZE - 1,
 511                 .flags  = IORESOURCE_MEM,
 512         },
 513 };
 514
 515 static struct platform_device ar71xx_spi_device = {
 516         .name           = "ar71xx-spi",
 517         .id             = -1,
 518         .resource       = ar71xx_spi_resources,
 519         .num_resources  = ARRAY_SIZE(ar71xx_spi_resources),
 520 };
 521
 522 void __init ar71xx_add_device_spi(struct ar71xx_spi_platform_data *pdata,
 523                                 struct spi_board_info const *info,
 524                                 unsigned n)
 525 {
 526         spi_register_board_info(info, n);
 527         ar71xx_spi_device.dev.platform_data = pdata;
 528         platform_device_register(&ar71xx_spi_device);
 529 }
 530
 531 void __init ar71xx_add_device_wdt(void)
 532 {
 533         platform_device_register_simple("ar71xx-wdt", -1, NULL, 0);
 534 }
 535
 536 void __init ar71xx_set_mac_base(unsigned char *mac)
 537 {
 538         memcpy(ar71xx_mac_base, mac, ETH_ALEN);
 539 }
 540
 541 void __init ar71xx_parse_mac_addr(char *mac_str)
 542 {
 543         u8 tmp[ETH_ALEN];
 544         int t;
 545
 546         t = sscanf(mac_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
 547                         &tmp[0], &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
 548
 549         if (t != ETH_ALEN)
 550                 t = sscanf(mac_str, "%02hhx.%02hhx.%02hhx.%02hhx.%02hhx.%02hhx",
 551                         &tmp[0], &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
 552
 553         if (t == ETH_ALEN)
 554                 ar71xx_set_mac_base(tmp);
 555         else
 556                 printk(KERN_DEBUG "ar71xx: failed to parse mac address "
 557                                 "\"%s\"\n", mac_str);
 558 }
 559
 560 static int __init ar71xx_ethaddr_setup(char *str)
 561 {
 562         ar71xx_parse_mac_addr(str);
 563         return 1;
 564 }
 565 __setup("ethaddr=", ar71xx_ethaddr_setup);
 566
 567 static int __init ar71xx_kmac_setup(char *str)
 568 {
 569         ar71xx_parse_mac_addr(str);
 570         return 1;
 571 }
 572 __setup("kmac=", ar71xx_kmac_setup);