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         pdata.shared = shared_pdev;
 243
 244         prop = of_get_property(np, "reg", NULL);
 245         if (!prop)
 246                 return -ENODEV;
 247         pdata.port_number = *prop;
 248
 249         mac_addr = of_get_mac_address(np);
 250         if (mac_addr)
 251                 memcpy(pdata.mac_addr, mac_addr, 6);
 252
 253         prop = of_get_property(np, "speed", NULL);
 254         if (prop)
 255                 pdata.speed = *prop;
 256
 257         prop = of_get_property(np, "tx_queue_size", NULL);
 258         if (prop)
 259                 pdata.tx_queue_size = *prop;
 260
 261         prop = of_get_property(np, "rx_queue_size", NULL);
 262         if (prop)
 263                 pdata.rx_queue_size = *prop;
 264
 265         prop = of_get_property(np, "tx_sram_addr", NULL);
 266         if (prop)
 267                 pdata.tx_sram_addr = *prop;
 268
 269         prop = of_get_property(np, "tx_sram_size", NULL);
 270         if (prop)
 271                 pdata.tx_sram_size = *prop;
 272
 273         prop = of_get_property(np, "rx_sram_addr", NULL);
 274         if (prop)
 275                 pdata.rx_sram_addr = *prop;
 276
 277         prop = of_get_property(np, "rx_sram_size", NULL);
 278         if (prop)
 279                 pdata.rx_sram_size = *prop;
 280
 281         ph = of_get_property(np, "phy", NULL);
 282         if (!ph)
 283                 return -ENODEV;
 284
 285         phy = of_find_node_by_phandle(*ph);
 286         if (phy == NULL)
 287                 return -ENODEV;
 288
 289         prop = of_get_property(phy, "reg", NULL);
 290         if (prop) {
 291                 pdata.force_phy_addr = 1;
 292                 pdata.phy_addr = *prop;
 293         }
 294
 295         of_node_put(phy);
 296
 297         pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
 298         if (!pdev)
 299                 return -ENOMEM;
 300
 301         err = platform_device_add_resources(pdev, r, 1);
 302         if (err)
 303                 goto error;
 304
 305         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 306         if (err)
 307                 goto error;
 308
 309         err = platform_device_add(pdev);
 310         if (err)
 311                 goto error;
 312
 313         return 0;
 314
 315 error:
 316         platform_device_put(pdev);
 317         return err;
 318 }
 319
 320 /*
 321  * Create mv64x60_i2c platform devices
 322  */
 323 static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
 324 {
 325         struct resource r[2];
 326         struct platform_device *pdev;
 327         struct mv64xxx_i2c_pdata pdata;
 328         const unsigned int *prop;
 329         int err;
 330
 331         memset(r, 0, sizeof(r));
 332
 333         err = of_address_to_resource(np, 0, &r[0]);
 334         if (err)
 335                 return err;
 336
 337         of_irq_to_resource(np, 0, &r[1]);
 338
 339         memset(&pdata, 0, sizeof(pdata));
 340
 341         pdata.freq_m = 8;       /* default */
 342         prop = of_get_property(np, "freq_m", NULL);
 343         if (prop)
 344                 pdata.freq_m = *prop;
 345
 346         pdata.freq_m = 3;       /* default */
 347         prop = of_get_property(np, "freq_n", NULL);
 348         if (prop)
 349                 pdata.freq_n = *prop;
 350
 351         pdata.timeout = 1000;                           /* default: 1 second */
 352
 353         pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
 354         if (!pdev)
 355                 return -ENOMEM;
 356
 357         err = platform_device_add_resources(pdev, r, 2);
 358         if (err)
 359                 goto error;
 360
 361         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 362         if (err)
 363                 goto error;
 364
 365         err = platform_device_add(pdev);
 366         if (err)
 367                 goto error;
 368
 369         return 0;
 370
 371 error:
 372         platform_device_put(pdev);
 373         return err;
 374 }
 375
 376 /*
 377  * Create mv64x60_wdt platform devices
 378  */
 379 static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
 380 {
 381         struct resource r;
 382         struct platform_device *pdev;
 383         struct mv64x60_wdt_pdata pdata;
 384         const unsigned int *prop;
 385         int err;
 386
 387         err = of_address_to_resource(np, 0, &r);
 388         if (err)
 389                 return err;
 390
 391         memset(&pdata, 0, sizeof(pdata));
 392
 393         pdata.timeout = 10;                     /* Default: 10 seconds */
 394
 395         np = of_get_parent(np);
 396         if (!np)
 397                 return -ENODEV;
 398
 399         prop = of_get_property(np, "clock-frequency", NULL);
 400         of_node_put(np);
 401         if (!prop)
 402                 return -ENODEV;
 403         pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
 404
 405         pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
 406         if (!pdev)
 407                 return -ENOMEM;
 408
 409         err = platform_device_add_resources(pdev, &r, 1);
 410         if (err)
 411                 goto error;
 412
 413         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 414         if (err)
 415                 goto error;
 416
 417         err = platform_device_add(pdev);
 418         if (err)
 419                 goto error;
 420
 421         return 0;
 422
 423 error:
 424         platform_device_put(pdev);
 425         return err;
 426 }
 427
 428 static int __init mv64x60_device_setup(void)
 429 {
 430         struct device_node *np, *np2;
 431         struct platform_device *pdev;
 432         int id, id2;
 433         int err;
 434
 435         id = 0;
 436         for_each_compatible_node(np, "serial", "marvell,mv64360-mpsc") {
 437                 err = mv64x60_mpsc_device_setup(np, id++);
 438                 if (err)
 439                         printk(KERN_ERR "Failed to initialize MV64x60 "
 440                                         "serial device %s: error %d.\n",
 441                                         np->full_name, err);
 442         }
 443
 444         id = 0;
 445         id2 = 0;
 446         for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
 447                 pdev = mv64x60_eth_register_shared_pdev(np, id++);
 448                 if (IS_ERR(pdev)) {
 449                         err = PTR_ERR(pdev);
 450                         printk(KERN_ERR "Failed to initialize MV64x60 "
 451                                         "network block %s: error %d.\n",
 452                                         np->full_name, err);
 453                         continue;
 454                 }
 455                 for_each_child_of_node(np, np2) {
 456                         if (!of_device_is_compatible(np2,
 457                                         "marvell,mv64360-eth"))
 458                                 continue;
 459                         err = mv64x60_eth_device_setup(np2, id2++, pdev);
 460                         if (err)
 461                                 printk(KERN_ERR "Failed to initialize "
 462                                                 "MV64x60 network device %s: "
 463                                                 "error %d.\n",
 464                                                 np2->full_name, err);
 465                 }
 466         }
 467
 468         id = 0;
 469         for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
 470                 err = mv64x60_i2c_device_setup(np, id++);
 471                 if (err)
 472                         printk(KERN_ERR "Failed to initialize MV64x60 I2C "
 473                                         "bus %s: error %d.\n",
 474                                         np->full_name, err);
 475         }
 476
 477         /* support up to one watchdog timer */
 478         np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
 479         if (np) {
 480                 if ((err = mv64x60_wdt_device_setup(np, id)))
 481                         printk(KERN_ERR "Failed to initialize MV64x60 "
 482                                         "Watchdog %s: error %d.\n",
 483                                         np->full_name, err);
 484                 of_node_put(np);
 485         }
 486
 487         return 0;
 488 }
 489 arch_initcall(mv64x60_device_setup);
 490
 491 static int __init mv64x60_add_mpsc_console(void)
 492 {
 493         struct device_node *np = NULL;
 494         const char *prop;
 495
 496         prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
 497         if (prop == NULL)
 498                 goto not_mpsc;
 499
 500         np = of_find_node_by_path(prop);
 501         if (!np)
 502                 goto not_mpsc;
 503
 504         if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
 505                 goto not_mpsc;
 506
 507         prop = of_get_property(np, "cell-index", NULL);
 508         if (!prop)
 509                 goto not_mpsc;
 510
 511         add_preferred_console("ttyMM", *(int *)prop, NULL);
 512
 513 not_mpsc:
 514         return 0;
 515 }
 516 console_initcall(mv64x60_add_mpsc_console);