arch/powerpc/sysdev/mv64x60_dev.c

   1 /*
   2  * Platform device setup for Marvell mv64360/mv64460 host bridges (Discovery)
   3  *
   4  * Author: Dale Farnsworth <dale@farnsworth.org>
   5  *
   6  * 2007 (c) MontaVista, Software, Inc.  This file is licensed under
   7  * the terms of the GNU General Public License version 2.  This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  */
  11
  12 #include <linux/stddef.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/console.h>
  16 #include <linux/mv643xx.h>
  17 #include <linux/platform_device.h>
  18
  19 #include <asm/prom.h>
  20
  21 /*
  22  * These functions provide the necessary setup for the mv64x60 drivers.
  23  * These drivers are unusual in that they work on both the MIPS and PowerPC
  24  * architectures.  Because of that, the drivers do not support the normal
  25  * PowerPC of_platform_bus_type.  They support platform_bus_type instead.
  26  */
  27
  28 /*
  29  * Create MPSC platform devices
  30  */
  31 static int __init mv64x60_mpsc_register_shared_pdev(struct device_node *np)
  32 {
  33         struct platform_device *pdev;
  34         struct resource r[2];
  35         struct mpsc_shared_pdata pdata;
  36         const phandle *ph;
  37         struct device_node *mpscrouting, *mpscintr;
  38         int err;
  39
  40         ph = of_get_property(np, "mpscrouting", NULL);
  41         mpscrouting = of_find_node_by_phandle(*ph);
  42         if (!mpscrouting)
  43                 return -ENODEV;
  44
  45         err = of_address_to_resource(mpscrouting, 0, &r[0]);
  46         of_node_put(mpscrouting);
  47         if (err)
  48                 return err;
  49
  50         ph = of_get_property(np, "mpscintr", NULL);
  51         mpscintr = of_find_node_by_phandle(*ph);
  52         if (!mpscintr)
  53                 return -ENODEV;
  54
  55         err = of_address_to_resource(mpscintr, 0, &r[1]);
  56         of_node_put(mpscintr);
  57         if (err)
  58                 return err;
  59
  60         memset(&pdata, 0, sizeof(pdata));
  61
  62         pdev = platform_device_alloc(MPSC_SHARED_NAME, 0);
  63         if (!pdev)
  64                 return -ENOMEM;
  65
  66         err = platform_device_add_resources(pdev, r, 2);
  67         if (err)
  68                 goto error;
  69
  70         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
  71         if (err)
  72                 goto error;
  73
  74         err = platform_device_add(pdev);
  75         if (err)
  76                 goto error;
  77
  78         return 0;
  79
  80 error:
  81         platform_device_put(pdev);
  82         return err;
  83 }
  84
  85
  86 static int __init mv64x60_mpsc_device_setup(struct device_node *np, int id)
  87 {
  88         struct resource r[5];
  89         struct mpsc_pdata pdata;
  90         struct platform_device *pdev;
  91         const unsigned int *prop;
  92         const phandle *ph;
  93         struct device_node *sdma, *brg;
  94         int err;
  95         int port_number;
  96
  97         /* only register the shared platform device the first time through */
  98         if (id == 0 && (err = mv64x60_mpsc_register_shared_pdev(np)))
  99                 return err;
 100
 101         memset(r, 0, sizeof(r));
 102
 103         err = of_address_to_resource(np, 0, &r[0]);
 104         if (err)
 105                 return err;
 106
 107         of_irq_to_resource(np, 0, &r[4]);
 108
 109         ph = of_get_property(np, "sdma", NULL);
 110         sdma = of_find_node_by_phandle(*ph);
 111         if (!sdma)
 112                 return -ENODEV;
 113
 114         of_irq_to_resource(sdma, 0, &r[3]);
 115         err = of_address_to_resource(sdma, 0, &r[1]);
 116         of_node_put(sdma);
 117         if (err)
 118                 return err;
 119
 120         ph = of_get_property(np, "brg", NULL);
 121         brg = of_find_node_by_phandle(*ph);
 122         if (!brg)
 123                 return -ENODEV;
 124
 125         err = of_address_to_resource(brg, 0, &r[2]);
 126         of_node_put(brg);
 127         if (err)
 128                 return err;
 129
 130         prop = of_get_property(np, "cell-index", NULL);
 131         if (!prop)
 132                 return -ENODEV;
 133         port_number = *(int *)prop;
 134
 135         memset(&pdata, 0, sizeof(pdata));
 136
 137         pdata.cache_mgmt = 1; /* All current revs need this set */
 138
 139         pdata.max_idle = 40; /* default */
 140         prop = of_get_property(np, "max_idle", NULL);
 141         if (prop)
 142                 pdata.max_idle = *prop;
 143
 144         prop = of_get_property(brg, "current-speed", NULL);
 145         if (prop)
 146                 pdata.default_baud = *prop;
 147
 148         /* Default is 8 bits, no parity, no flow control */
 149         pdata.default_bits = 8;
 150         pdata.default_parity = 'n';
 151         pdata.default_flow = 'n';
 152
 153         prop = of_get_property(np, "chr_1", NULL);
 154         if (prop)
 155                 pdata.chr_1_val = *prop;
 156
 157         prop = of_get_property(np, "chr_2", NULL);
 158         if (prop)
 159                 pdata.chr_2_val = *prop;
 160
 161         prop = of_get_property(np, "chr_10", NULL);
 162         if (prop)
 163                 pdata.chr_10_val = *prop;
 164
 165         prop = of_get_property(np, "mpcr", NULL);
 166         if (prop)
 167                 pdata.mpcr_val = *prop;
 168
 169         prop = of_get_property(brg, "bcr", NULL);
 170         if (prop)
 171                 pdata.bcr_val = *prop;
 172
 173         pdata.brg_can_tune = 1; /* All current revs need this set */
 174
 175         prop = of_get_property(brg, "clock-src", NULL);
 176         if (prop)
 177                 pdata.brg_clk_src = *prop;
 178
 179         prop = of_get_property(brg, "clock-frequency", NULL);
 180         if (prop)
 181                 pdata.brg_clk_freq = *prop;
 182
 183         pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
 184         if (!pdev)
 185                 return -ENOMEM;
 186
 187         err = platform_device_add_resources(pdev, r, 5);
 188         if (err)
 189                 goto error;
 190
 191         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 192         if (err)
 193                 goto error;
 194
 195         err = platform_device_add(pdev);
 196         if (err)
 197                 goto error;
 198
 199         return 0;
 200
 201 error:
 202         platform_device_put(pdev);
 203         return err;
 204 }
 205
 206 /*
 207  * Create mv64x60_eth platform devices
 208  */
 209 static struct platform_device * __init mv64x60_eth_register_shared_pdev(
 210                                                 struct device_node *np, int id)
 211 {
 212         struct platform_device *pdev;
 213         struct resource r[1];
 214         int err;
 215
 216         err = of_address_to_resource(np, 0, &r[0]);
 217         if (err)
 218                 return ERR_PTR(err);
 219
 220         pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, id,
 221                                                r, 1);
 222         return pdev;
 223 }
 224
 225 static int __init mv64x60_eth_device_setup(struct device_node *np, int id,
 226                                            struct platform_device *shared_pdev)
 227 {
 228         struct resource r[1];
 229         struct mv643xx_eth_platform_data pdata;
 230         struct platform_device *pdev;
 231         struct device_node *phy;
 232         const u8 *mac_addr;
 233         const int *prop;
 234         const phandle *ph;
 235         int err;
 236
 237         memset(r, 0, sizeof(r));
 238         of_irq_to_resource(np, 0, &r[0]);
 239
 240         memset(&pdata, 0, sizeof(pdata));
 241
 242         prop = of_get_property(np, "reg", NULL);
 243         if (!prop)
 244                 return -ENODEV;
 245         pdata.port_number = *prop;
 246
 247         mac_addr = of_get_mac_address(np);
 248         if (mac_addr)
 249                 memcpy(pdata.mac_addr, mac_addr, 6);
 250
 251         prop = of_get_property(np, "speed", NULL);
 252         if (prop)
 253                 pdata.speed = *prop;
 254
 255         prop = of_get_property(np, "tx_queue_size", NULL);
 256         if (prop)
 257                 pdata.tx_queue_size = *prop;
 258
 259         prop = of_get_property(np, "rx_queue_size", NULL);
 260         if (prop)
 261                 pdata.rx_queue_size = *prop;
 262
 263         prop = of_get_property(np, "tx_sram_addr", NULL);
 264         if (prop)
 265                 pdata.tx_sram_addr = *prop;
 266
 267         prop = of_get_property(np, "tx_sram_size", NULL);
 268         if (prop)
 269                 pdata.tx_sram_size = *prop;
 270
 271         prop = of_get_property(np, "rx_sram_addr", NULL);
 272         if (prop)
 273                 pdata.rx_sram_addr = *prop;
 274
 275         prop = of_get_property(np, "rx_sram_size", NULL);
 276         if (prop)
 277                 pdata.rx_sram_size = *prop;
 278
 279         ph = of_get_property(np, "phy", NULL);
 280         if (!ph)
 281                 return -ENODEV;
 282
 283         phy = of_find_node_by_phandle(*ph);
 284         if (phy == NULL)
 285                 return -ENODEV;
 286
 287         prop = of_get_property(phy, "reg", NULL);
 288         if (prop) {
 289                 pdata.force_phy_addr = 1;
 290                 pdata.phy_addr = *prop;
 291         }
 292
 293         of_node_put(phy);
 294
 295         pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
 296         if (!pdev)
 297                 return -ENOMEM;
 298
 299         err = platform_device_add_resources(pdev, r, 1);
 300         if (err)
 301                 goto error;
 302
 303         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 304         if (err)
 305                 goto error;
 306
 307         err = platform_device_add(pdev);
 308         if (err)
 309                 goto error;
 310
 311         return 0;
 312
 313 error:
 314         platform_device_put(pdev);
 315         return err;
 316 }
 317
 318 /*
 319  * Create mv64x60_i2c platform devices
 320  */
 321 static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
 322 {
 323         struct resource r[2];
 324         struct platform_device *pdev;
 325         struct mv64xxx_i2c_pdata pdata;
 326         const unsigned int *prop;
 327         int err;
 328
 329         memset(r, 0, sizeof(r));
 330
 331         err = of_address_to_resource(np, 0, &r[0]);
 332         if (err)
 333                 return err;
 334
 335         of_irq_to_resource(np, 0, &r[1]);
 336
 337         memset(&pdata, 0, sizeof(pdata));
 338
 339         pdata.freq_m = 8;       /* default */
 340         prop = of_get_property(np, "freq_m", NULL);
 341         if (prop)
 342                 pdata.freq_m = *prop;
 343
 344         pdata.freq_m = 3;       /* default */
 345         prop = of_get_property(np, "freq_n", NULL);
 346         if (prop)
 347                 pdata.freq_n = *prop;
 348
 349         pdata.timeout = 1000;                           /* default: 1 second */
 350
 351         pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
 352         if (!pdev)
 353                 return -ENOMEM;
 354
 355         err = platform_device_add_resources(pdev, r, 2);
 356         if (err)
 357                 goto error;
 358
 359         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 360         if (err)
 361                 goto error;
 362
 363         err = platform_device_add(pdev);
 364         if (err)
 365                 goto error;
 366
 367         return 0;
 368
 369 error:
 370         platform_device_put(pdev);
 371         return err;
 372 }
 373
 374 /*
 375  * Create mv64x60_wdt platform devices
 376  */
 377 static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
 378 {
 379         struct resource r;
 380         struct platform_device *pdev;
 381         struct mv64x60_wdt_pdata pdata;
 382         const unsigned int *prop;
 383         int err;
 384
 385         err = of_address_to_resource(np, 0, &r);
 386         if (err)
 387                 return err;
 388
 389         memset(&pdata, 0, sizeof(pdata));
 390
 391         pdata.timeout = 10;                     /* Default: 10 seconds */
 392
 393         np = of_get_parent(np);
 394         if (!np)
 395                 return -ENODEV;
 396
 397         prop = of_get_property(np, "clock-frequency", NULL);
 398         of_node_put(np);
 399         if (!prop)
 400                 return -ENODEV;
 401         pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
 402
 403         pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
 404         if (!pdev)
 405                 return -ENOMEM;
 406
 407         err = platform_device_add_resources(pdev, &r, 1);
 408         if (err)
 409                 goto error;
 410
 411         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 412         if (err)
 413                 goto error;
 414
 415         err = platform_device_add(pdev);
 416         if (err)
 417                 goto error;
 418
 419         return 0;
 420
 421 error:
 422         platform_device_put(pdev);
 423         return err;
 424 }
 425
 426 static int __init mv64x60_device_setup(void)
 427 {
 428         struct device_node *np, *np2;
 429         struct platform_device *pdev;
 430         int id, id2;
 431         int err;
 432
 433         id = 0;
 434         for_each_compatible_node(np, "serial", "marvell,mv64360-mpsc") {
 435                 err = mv64x60_mpsc_device_setup(np, id++);
 436                 if (err)
 437                         printk(KERN_ERR "Failed to initialize MV64x60 "
 438                                         "serial device %s: error %d.\n",
 439                                         np->full_name, err);
 440         }
 441
 442         id = 0;
 443         id2 = 0;
 444         for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
 445                 pdev = mv64x60_eth_register_shared_pdev(np, id++);
 446                 if (IS_ERR(pdev)) {
 447                         err = PTR_ERR(pdev);
 448                         printk(KERN_ERR "Failed to initialize MV64x60 "
 449                                         "network block %s: error %d.\n",
 450                                         np->full_name, err);
 451                         continue;
 452                 }
 453                 for_each_child_of_node(np, np2) {
 454                         if (!of_device_is_compatible(np2,
 455                                         "marvell,mv64360-eth"))
 456                                 continue;
 457                         err = mv64x60_eth_device_setup(np2, id2++, pdev);
 458                         if (err)
 459                                 printk(KERN_ERR "Failed to initialize "
 460                                                 "MV64x60 network device %s: "
 461                                                 "error %d.\n",
 462                                                 np2->full_name, err);
 463                 }
 464         }
 465
 466         id = 0;
 467         for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
 468                 err = mv64x60_i2c_device_setup(np, id++);
 469                 if (err)
 470                         printk(KERN_ERR "Failed to initialize MV64x60 I2C "
 471                                         "bus %s: error %d.\n",
 472                                         np->full_name, err);
 473         }
 474
 475         /* support up to one watchdog timer */
 476         np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
 477         if (np) {
 478                 if ((err = mv64x60_wdt_device_setup(np, id)))
 479                         printk(KERN_ERR "Failed to initialize MV64x60 "
 480                                         "Watchdog %s: error %d.\n",
 481                                         np->full_name, err);
 482                 of_node_put(np);
 483         }
 484
 485         return 0;
 486 }
 487 arch_initcall(mv64x60_device_setup);
 488
 489 static int __init mv64x60_add_mpsc_console(void)
 490 {
 491         struct device_node *np = NULL;
 492         const char *prop;
 493
 494         prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
 495         if (prop == NULL)
 496                 goto not_mpsc;
 497
 498         np = of_find_node_by_path(prop);
 499         if (!np)
 500                 goto not_mpsc;
 501
 502         if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
 503                 goto not_mpsc;
 504
 505         prop = of_get_property(np, "cell-index", NULL);
 506         if (!prop)
 507                 goto not_mpsc;
 508
 509         add_preferred_console("ttyMM", *(int *)prop, NULL);
 510
 511 not_mpsc:
 512         return 0;
 513 }
 514 console_initcall(mv64x60_add_mpsc_console);