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, "block-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         prop = of_get_property(np, "max_idle", NULL);
 140         if (prop)
 141                 pdata.max_idle = *prop;
 142
 143         prop = of_get_property(brg, "current-speed", NULL);
 144         if (prop)
 145                 pdata.default_baud = *prop;
 146
 147         /* Default is 8 bits, no parity, no flow control */
 148         pdata.default_bits = 8;
 149         pdata.default_parity = 'n';
 150         pdata.default_flow = 'n';
 151
 152         prop = of_get_property(np, "chr_1", NULL);
 153         if (prop)
 154                 pdata.chr_1_val = *prop;
 155
 156         prop = of_get_property(np, "chr_2", NULL);
 157         if (prop)
 158                 pdata.chr_2_val = *prop;
 159
 160         prop = of_get_property(np, "chr_10", NULL);
 161         if (prop)
 162                 pdata.chr_10_val = *prop;
 163
 164         prop = of_get_property(np, "mpcr", NULL);
 165         if (prop)
 166                 pdata.mpcr_val = *prop;
 167
 168         prop = of_get_property(brg, "bcr", NULL);
 169         if (prop)
 170                 pdata.bcr_val = *prop;
 171
 172         pdata.brg_can_tune = 1; /* All current revs need this set */
 173
 174         prop = of_get_property(brg, "clock-src", NULL);
 175         if (prop)
 176                 pdata.brg_clk_src = *prop;
 177
 178         prop = of_get_property(brg, "clock-frequency", NULL);
 179         if (prop)
 180                 pdata.brg_clk_freq = *prop;
 181
 182         pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
 183         if (!pdev)
 184                 return -ENOMEM;
 185
 186         err = platform_device_add_resources(pdev, r, 5);
 187         if (err)
 188                 goto error;
 189
 190         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 191         if (err)
 192                 goto error;
 193
 194         err = platform_device_add(pdev);
 195         if (err)
 196                 goto error;
 197
 198         return 0;
 199
 200 error:
 201         platform_device_put(pdev);
 202         return err;
 203 }
 204
 205 /*
 206  * Create mv64x60_eth platform devices
 207  */
 208 static int __init eth_register_shared_pdev(struct device_node *np)
 209 {
 210         struct platform_device *pdev;
 211         struct resource r[1];
 212         int err;
 213
 214         np = of_get_parent(np);
 215         if (!np)
 216                 return -ENODEV;
 217
 218         err = of_address_to_resource(np, 0, &r[0]);
 219         of_node_put(np);
 220         if (err)
 221                 return err;
 222
 223         pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, 0,
 224                                                r, 1);
 225         if (IS_ERR(pdev))
 226                 return PTR_ERR(pdev);
 227
 228         return 0;
 229 }
 230
 231 static int __init mv64x60_eth_device_setup(struct device_node *np, int id)
 232 {
 233         struct resource r[1];
 234         struct mv643xx_eth_platform_data pdata;
 235         struct platform_device *pdev;
 236         struct device_node *phy;
 237         const u8 *mac_addr;
 238         const int *prop;
 239         const phandle *ph;
 240         int err;
 241
 242         /* only register the shared platform device the first time through */
 243         if (id == 0 && (err = eth_register_shared_pdev(np)))
 244                 return err;;
 245
 246         memset(r, 0, sizeof(r));
 247         of_irq_to_resource(np, 0, &r[0]);
 248
 249         memset(&pdata, 0, sizeof(pdata));
 250
 251         prop = of_get_property(np, "block-index", NULL);
 252         if (!prop)
 253                 return -ENODEV;
 254         pdata.port_number = *prop;
 255
 256         mac_addr = of_get_mac_address(np);
 257         if (mac_addr)
 258                 memcpy(pdata.mac_addr, mac_addr, 6);
 259
 260         prop = of_get_property(np, "speed", NULL);
 261         if (prop)
 262                 pdata.speed = *prop;
 263
 264         prop = of_get_property(np, "tx_queue_size", NULL);
 265         if (prop)
 266                 pdata.tx_queue_size = *prop;
 267
 268         prop = of_get_property(np, "rx_queue_size", NULL);
 269         if (prop)
 270                 pdata.rx_queue_size = *prop;
 271
 272         prop = of_get_property(np, "tx_sram_addr", NULL);
 273         if (prop)
 274                 pdata.tx_sram_addr = *prop;
 275
 276         prop = of_get_property(np, "tx_sram_size", NULL);
 277         if (prop)
 278                 pdata.tx_sram_size = *prop;
 279
 280         prop = of_get_property(np, "rx_sram_addr", NULL);
 281         if (prop)
 282                 pdata.rx_sram_addr = *prop;
 283
 284         prop = of_get_property(np, "rx_sram_size", NULL);
 285         if (prop)
 286                 pdata.rx_sram_size = *prop;
 287
 288         ph = of_get_property(np, "phy", NULL);
 289         if (!ph)
 290                 return -ENODEV;
 291
 292         phy = of_find_node_by_phandle(*ph);
 293         if (phy == NULL)
 294                 return -ENODEV;
 295
 296         prop = of_get_property(phy, "reg", NULL);
 297         if (prop) {
 298                 pdata.force_phy_addr = 1;
 299                 pdata.phy_addr = *prop;
 300         }
 301
 302         of_node_put(phy);
 303
 304         pdev = platform_device_alloc(MV643XX_ETH_NAME, pdata.port_number);
 305         if (!pdev)
 306                 return -ENOMEM;
 307
 308         err = platform_device_add_resources(pdev, r, 1);
 309         if (err)
 310                 goto error;
 311
 312         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 313         if (err)
 314                 goto error;
 315
 316         err = platform_device_add(pdev);
 317         if (err)
 318                 goto error;
 319
 320         return 0;
 321
 322 error:
 323         platform_device_put(pdev);
 324         return err;
 325 }
 326
 327 /*
 328  * Create mv64x60_i2c platform devices
 329  */
 330 static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
 331 {
 332         struct resource r[2];
 333         struct platform_device *pdev;
 334         struct mv64xxx_i2c_pdata pdata;
 335         const unsigned int *prop;
 336         int err;
 337
 338         memset(r, 0, sizeof(r));
 339
 340         err = of_address_to_resource(np, 0, &r[0]);
 341         if (err)
 342                 return err;
 343
 344         of_irq_to_resource(np, 0, &r[1]);
 345
 346         memset(&pdata, 0, sizeof(pdata));
 347
 348         prop = of_get_property(np, "freq_m", NULL);
 349         if (!prop)
 350                 return -ENODEV;
 351         pdata.freq_m = *prop;
 352
 353         prop = of_get_property(np, "freq_n", NULL);
 354         if (!prop)
 355                 return -ENODEV;
 356         pdata.freq_n = *prop;
 357
 358         prop = of_get_property(np, "timeout", NULL);
 359         if (prop)
 360                 pdata.timeout = *prop;
 361         else
 362                 pdata.timeout = 1000;   /* 1 second */
 363
 364         prop = of_get_property(np, "retries", NULL);
 365         if (prop)
 366                 pdata.retries = *prop;
 367         else
 368                 pdata.retries = 1;
 369
 370         pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
 371         if (!pdev)
 372                 return -ENOMEM;
 373
 374         err = platform_device_add_resources(pdev, r, 2);
 375         if (err)
 376                 goto error;
 377
 378         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 379         if (err)
 380                 goto error;
 381
 382         err = platform_device_add(pdev);
 383         if (err)
 384                 goto error;
 385
 386         return 0;
 387
 388 error:
 389         platform_device_put(pdev);
 390         return err;
 391 }
 392
 393 /*
 394  * Create mv64x60_wdt platform devices
 395  */
 396 static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
 397 {
 398         struct resource r;
 399         struct platform_device *pdev;
 400         struct mv64x60_wdt_pdata pdata;
 401         const unsigned int *prop;
 402         int err;
 403
 404         err = of_address_to_resource(np, 0, &r);
 405         if (err)
 406                 return err;
 407
 408         memset(&pdata, 0, sizeof(pdata));
 409
 410         prop = of_get_property(np, "timeout", NULL);
 411         if (!prop)
 412                 return -ENODEV;
 413         pdata.timeout = *prop;
 414
 415         np = of_get_parent(np);
 416         if (!np)
 417                 return -ENODEV;
 418
 419         prop = of_get_property(np, "clock-frequency", NULL);
 420         of_node_put(np);
 421         if (!prop)
 422                 return -ENODEV;
 423         pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
 424
 425         pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
 426         if (!pdev)
 427                 return -ENOMEM;
 428
 429         err = platform_device_add_resources(pdev, &r, 1);
 430         if (err)
 431                 goto error;
 432
 433         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 434         if (err)
 435                 goto error;
 436
 437         err = platform_device_add(pdev);
 438         if (err)
 439                 goto error;
 440
 441         return 0;
 442
 443 error:
 444         platform_device_put(pdev);
 445         return err;
 446 }
 447
 448 static int __init mv64x60_device_setup(void)
 449 {
 450         struct device_node *np = NULL;
 451         int id;
 452         int err;
 453
 454         for (id = 0;
 455              (np = of_find_compatible_node(np, "serial", "marvell,mpsc")); id++)
 456                 if ((err = mv64x60_mpsc_device_setup(np, id)))
 457                         goto error;
 458
 459         for (id = 0;
 460              (np = of_find_compatible_node(np, "network",
 461                                            "marvell,mv64x60-eth"));
 462              id++)
 463                 if ((err = mv64x60_eth_device_setup(np, id)))
 464                         goto error;
 465
 466         for (id = 0;
 467              (np = of_find_compatible_node(np, "i2c", "marvell,mv64x60-i2c"));
 468              id++)
 469                 if ((err = mv64x60_i2c_device_setup(np, id)))
 470                         goto error;
 471
 472         /* support up to one watchdog timer */
 473         np = of_find_compatible_node(np, NULL, "marvell,mv64x60-wdt");
 474         if (np) {
 475                 if ((err = mv64x60_wdt_device_setup(np, id)))
 476                         goto error;
 477                 of_node_put(np);
 478         }
 479
 480
 481         return 0;
 482
 483 error:
 484         of_node_put(np);
 485         return err;
 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,mpsc"))
 503                 goto not_mpsc;
 504
 505         prop = of_get_property(np, "block-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);