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 #include <linux/of_platform.h>
  19 #include <linux/of_net.h>
  20 #include <linux/dma-mapping.h>
  21
  22 #include <asm/prom.h>
  23
  24 /* These functions provide the necessary setup for the mv64x60 drivers. */
  25
  26 static const struct of_device_id of_mv64x60_devices[] __initconst = {
  27         { .compatible = "marvell,mv64306-devctrl", },
  28         {}
  29 };
  30
  31 /*
  32  * Create MPSC platform devices
  33  */
  34 static int __init mv64x60_mpsc_register_shared_pdev(struct device_node *np)
  35 {
  36         struct platform_device *pdev;
  37         struct resource r[2];
  38         struct mpsc_shared_pdata pdata;
  39         const phandle *ph;
  40         struct device_node *mpscrouting, *mpscintr;
  41         int err;
  42
  43         ph = of_get_property(np, "mpscrouting", NULL);
  44         mpscrouting = of_find_node_by_phandle(*ph);
  45         if (!mpscrouting)
  46                 return -ENODEV;
  47
  48         err = of_address_to_resource(mpscrouting, 0, &r[0]);
  49         of_node_put(mpscrouting);
  50         if (err)
  51                 return err;
  52
  53         ph = of_get_property(np, "mpscintr", NULL);
  54         mpscintr = of_find_node_by_phandle(*ph);
  55         if (!mpscintr)
  56                 return -ENODEV;
  57
  58         err = of_address_to_resource(mpscintr, 0, &r[1]);
  59         of_node_put(mpscintr);
  60         if (err)
  61                 return err;
  62
  63         memset(&pdata, 0, sizeof(pdata));
  64
  65         pdev = platform_device_alloc(MPSC_SHARED_NAME, 0);
  66         if (!pdev)
  67                 return -ENOMEM;
  68
  69         err = platform_device_add_resources(pdev, r, 2);
  70         if (err)
  71                 goto error;
  72
  73         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
  74         if (err)
  75                 goto error;
  76
  77         err = platform_device_add(pdev);
  78         if (err)
  79                 goto error;
  80
  81         return 0;
  82
  83 error:
  84         platform_device_put(pdev);
  85         return err;
  86 }
  87
  88
  89 static int __init mv64x60_mpsc_device_setup(struct device_node *np, int id)
  90 {
  91         struct resource r[5];
  92         struct mpsc_pdata pdata;
  93         struct platform_device *pdev;
  94         const unsigned int *prop;
  95         const phandle *ph;
  96         struct device_node *sdma, *brg;
  97         int err;
  98         int port_number;
  99
 100         /* only register the shared platform device the first time through */
 101         if (id == 0 && (err = mv64x60_mpsc_register_shared_pdev(np)))
 102                 return err;
 103
 104         memset(r, 0, sizeof(r));
 105
 106         err = of_address_to_resource(np, 0, &r[0]);
 107         if (err)
 108                 return err;
 109
 110         of_irq_to_resource(np, 0, &r[4]);
 111
 112         ph = of_get_property(np, "sdma", NULL);
 113         sdma = of_find_node_by_phandle(*ph);
 114         if (!sdma)
 115                 return -ENODEV;
 116
 117         of_irq_to_resource(sdma, 0, &r[3]);
 118         err = of_address_to_resource(sdma, 0, &r[1]);
 119         of_node_put(sdma);
 120         if (err)
 121                 return err;
 122
 123         ph = of_get_property(np, "brg", NULL);
 124         brg = of_find_node_by_phandle(*ph);
 125         if (!brg)
 126                 return -ENODEV;
 127
 128         err = of_address_to_resource(brg, 0, &r[2]);
 129         of_node_put(brg);
 130         if (err)
 131                 return err;
 132
 133         prop = of_get_property(np, "cell-index", NULL);
 134         if (!prop)
 135                 return -ENODEV;
 136         port_number = *(int *)prop;
 137
 138         memset(&pdata, 0, sizeof(pdata));
 139
 140         pdata.cache_mgmt = 1; /* All current revs need this set */
 141
 142         pdata.max_idle = 40; /* default */
 143         prop = of_get_property(np, "max_idle", NULL);
 144         if (prop)
 145                 pdata.max_idle = *prop;
 146
 147         prop = of_get_property(brg, "current-speed", NULL);
 148         if (prop)
 149                 pdata.default_baud = *prop;
 150
 151         /* Default is 8 bits, no parity, no flow control */
 152         pdata.default_bits = 8;
 153         pdata.default_parity = 'n';
 154         pdata.default_flow = 'n';
 155
 156         prop = of_get_property(np, "chr_1", NULL);
 157         if (prop)
 158                 pdata.chr_1_val = *prop;
 159
 160         prop = of_get_property(np, "chr_2", NULL);
 161         if (prop)
 162                 pdata.chr_2_val = *prop;
 163
 164         prop = of_get_property(np, "chr_10", NULL);
 165         if (prop)
 166                 pdata.chr_10_val = *prop;
 167
 168         prop = of_get_property(np, "mpcr", NULL);
 169         if (prop)
 170                 pdata.mpcr_val = *prop;
 171
 172         prop = of_get_property(brg, "bcr", NULL);
 173         if (prop)
 174                 pdata.bcr_val = *prop;
 175
 176         pdata.brg_can_tune = 1; /* All current revs need this set */
 177
 178         prop = of_get_property(brg, "clock-src", NULL);
 179         if (prop)
 180                 pdata.brg_clk_src = *prop;
 181
 182         prop = of_get_property(brg, "clock-frequency", NULL);
 183         if (prop)
 184                 pdata.brg_clk_freq = *prop;
 185
 186         pdev = platform_device_alloc(MPSC_CTLR_NAME, port_number);
 187         if (!pdev)
 188                 return -ENOMEM;
 189         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 190
 191         err = platform_device_add_resources(pdev, r, 5);
 192         if (err)
 193                 goto error;
 194
 195         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 196         if (err)
 197                 goto error;
 198
 199         err = platform_device_add(pdev);
 200         if (err)
 201                 goto error;
 202
 203         return 0;
 204
 205 error:
 206         platform_device_put(pdev);
 207         return err;
 208 }
 209
 210 /*
 211  * Create mv64x60_eth platform devices
 212  */
 213 static struct platform_device * __init mv64x60_eth_register_shared_pdev(
 214                                                 struct device_node *np, int id)
 215 {
 216         struct platform_device *pdev;
 217         struct resource r[2];
 218         int err;
 219
 220         err = of_address_to_resource(np, 0, &r[0]);
 221         if (err)
 222                 return ERR_PTR(err);
 223
 224         /* register an orion mdio bus driver */
 225         r[1].start = r[0].start + 0x4;
 226         r[1].end = r[0].start + 0x84 - 1;
 227         r[1].flags = IORESOURCE_MEM;
 228
 229         if (id == 0) {
 230                 pdev = platform_device_register_simple("orion-mdio", -1, &r[1], 1);
 231                 if (IS_ERR(pdev))
 232                         return pdev;
 233         }
 234
 235         pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, id,
 236                                                &r[0], 1);
 237
 238         return pdev;
 239 }
 240
 241 static int __init mv64x60_eth_device_setup(struct device_node *np, int id,
 242                                            struct platform_device *shared_pdev)
 243 {
 244         struct resource r[1];
 245         struct mv643xx_eth_platform_data pdata;
 246         struct platform_device *pdev;
 247         struct device_node *phy;
 248         const u8 *mac_addr;
 249         const int *prop;
 250         const phandle *ph;
 251         int err;
 252
 253         memset(r, 0, sizeof(r));
 254         of_irq_to_resource(np, 0, &r[0]);
 255
 256         memset(&pdata, 0, sizeof(pdata));
 257
 258         pdata.shared = shared_pdev;
 259
 260         prop = of_get_property(np, "reg", NULL);
 261         if (!prop)
 262                 return -ENODEV;
 263         pdata.port_number = *prop;
 264
 265         mac_addr = of_get_mac_address(np);
 266         if (mac_addr)
 267                 memcpy(pdata.mac_addr, mac_addr, 6);
 268
 269         prop = of_get_property(np, "speed", NULL);
 270         if (prop)
 271                 pdata.speed = *prop;
 272
 273         prop = of_get_property(np, "tx_queue_size", NULL);
 274         if (prop)
 275                 pdata.tx_queue_size = *prop;
 276
 277         prop = of_get_property(np, "rx_queue_size", NULL);
 278         if (prop)
 279                 pdata.rx_queue_size = *prop;
 280
 281         prop = of_get_property(np, "tx_sram_addr", NULL);
 282         if (prop)
 283                 pdata.tx_sram_addr = *prop;
 284
 285         prop = of_get_property(np, "tx_sram_size", NULL);
 286         if (prop)
 287                 pdata.tx_sram_size = *prop;
 288
 289         prop = of_get_property(np, "rx_sram_addr", NULL);
 290         if (prop)
 291                 pdata.rx_sram_addr = *prop;
 292
 293         prop = of_get_property(np, "rx_sram_size", NULL);
 294         if (prop)
 295                 pdata.rx_sram_size = *prop;
 296
 297         ph = of_get_property(np, "phy", NULL);
 298         if (!ph)
 299                 return -ENODEV;
 300
 301         phy = of_find_node_by_phandle(*ph);
 302         if (phy == NULL)
 303                 return -ENODEV;
 304
 305         prop = of_get_property(phy, "reg", NULL);
 306         if (prop)
 307                 pdata.phy_addr = MV643XX_ETH_PHY_ADDR(*prop);
 308
 309         of_node_put(phy);
 310
 311         pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
 312         if (!pdev)
 313                 return -ENOMEM;
 314
 315         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 316         err = platform_device_add_resources(pdev, r, 1);
 317         if (err)
 318                 goto error;
 319
 320         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 321         if (err)
 322                 goto error;
 323
 324         err = platform_device_add(pdev);
 325         if (err)
 326                 goto error;
 327
 328         return 0;
 329
 330 error:
 331         platform_device_put(pdev);
 332         return err;
 333 }
 334
 335 /*
 336  * Create mv64x60_i2c platform devices
 337  */
 338 static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
 339 {
 340         struct resource r[2];
 341         struct platform_device *pdev;
 342         struct mv64xxx_i2c_pdata pdata;
 343         const unsigned int *prop;
 344         int err;
 345
 346         memset(r, 0, sizeof(r));
 347
 348         err = of_address_to_resource(np, 0, &r[0]);
 349         if (err)
 350                 return err;
 351
 352         of_irq_to_resource(np, 0, &r[1]);
 353
 354         memset(&pdata, 0, sizeof(pdata));
 355
 356         pdata.freq_m = 8;       /* default */
 357         prop = of_get_property(np, "freq_m", NULL);
 358         if (prop)
 359                 pdata.freq_m = *prop;
 360
 361         pdata.freq_n = 3;       /* default */
 362         prop = of_get_property(np, "freq_n", NULL);
 363         if (prop)
 364                 pdata.freq_n = *prop;
 365
 366         pdata.timeout = 1000;                           /* default: 1 second */
 367
 368         pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
 369         if (!pdev)
 370                 return -ENOMEM;
 371
 372         err = platform_device_add_resources(pdev, r, 2);
 373         if (err)
 374                 goto error;
 375
 376         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 377         if (err)
 378                 goto error;
 379
 380         err = platform_device_add(pdev);
 381         if (err)
 382                 goto error;
 383
 384         return 0;
 385
 386 error:
 387         platform_device_put(pdev);
 388         return err;
 389 }
 390
 391 /*
 392  * Create mv64x60_wdt platform devices
 393  */
 394 static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
 395 {
 396         struct resource r;
 397         struct platform_device *pdev;
 398         struct mv64x60_wdt_pdata pdata;
 399         const unsigned int *prop;
 400         int err;
 401
 402         err = of_address_to_resource(np, 0, &r);
 403         if (err)
 404                 return err;
 405
 406         memset(&pdata, 0, sizeof(pdata));
 407
 408         pdata.timeout = 10;                     /* Default: 10 seconds */
 409
 410         np = of_get_parent(np);
 411         if (!np)
 412                 return -ENODEV;
 413
 414         prop = of_get_property(np, "clock-frequency", NULL);
 415         of_node_put(np);
 416         if (!prop)
 417                 return -ENODEV;
 418         pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
 419
 420         pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
 421         if (!pdev)
 422                 return -ENOMEM;
 423
 424         err = platform_device_add_resources(pdev, &r, 1);
 425         if (err)
 426                 goto error;
 427
 428         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 429         if (err)
 430                 goto error;
 431
 432         err = platform_device_add(pdev);
 433         if (err)
 434                 goto error;
 435
 436         return 0;
 437
 438 error:
 439         platform_device_put(pdev);
 440         return err;
 441 }
 442
 443 static int __init mv64x60_device_setup(void)
 444 {
 445         struct device_node *np, *np2;
 446         struct platform_device *pdev;
 447         int id, id2;
 448         int err;
 449
 450         id = 0;
 451         for_each_compatible_node(np, NULL, "marvell,mv64360-mpsc") {
 452                 err = mv64x60_mpsc_device_setup(np, id++);
 453                 if (err)
 454                         printk(KERN_ERR "Failed to initialize MV64x60 "
 455                                         "serial device %pOF: error %d.\n",
 456                                         np, err);
 457         }
 458
 459         id = 0;
 460         id2 = 0;
 461         for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
 462                 pdev = mv64x60_eth_register_shared_pdev(np, id++);
 463                 if (IS_ERR(pdev)) {
 464                         err = PTR_ERR(pdev);
 465                         printk(KERN_ERR "Failed to initialize MV64x60 "
 466                                         "network block %pOF: error %d.\n",
 467                                         np, err);
 468                         continue;
 469                 }
 470                 for_each_child_of_node(np, np2) {
 471                         if (!of_device_is_compatible(np2,
 472                                         "marvell,mv64360-eth"))
 473                                 continue;
 474                         err = mv64x60_eth_device_setup(np2, id2++, pdev);
 475                         if (err)
 476                                 printk(KERN_ERR "Failed to initialize "
 477                                                 "MV64x60 network device %pOF: "
 478                                                 "error %d.\n",
 479                                                 np2, err);
 480                 }
 481         }
 482
 483         id = 0;
 484         for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
 485                 err = mv64x60_i2c_device_setup(np, id++);
 486                 if (err)
 487                         printk(KERN_ERR "Failed to initialize MV64x60 I2C "
 488                                         "bus %pOF: error %d.\n",
 489                                         np, err);
 490         }
 491
 492         /* support up to one watchdog timer */
 493         np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
 494         if (np) {
 495                 if ((err = mv64x60_wdt_device_setup(np, id)))
 496                         printk(KERN_ERR "Failed to initialize MV64x60 "
 497                                         "Watchdog %pOF: error %d.\n",
 498                                         np, err);
 499                 of_node_put(np);
 500         }
 501
 502         /* Now add every node that is on the device bus */
 503         for_each_compatible_node(np, NULL, "marvell,mv64360")
 504                 of_platform_bus_probe(np, of_mv64x60_devices, NULL);
 505
 506         return 0;
 507 }
 508 arch_initcall(mv64x60_device_setup);
 509
 510 static int __init mv64x60_add_mpsc_console(void)
 511 {
 512         struct device_node *np = NULL;
 513         const char *prop;
 514
 515         prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
 516         if (prop == NULL)
 517                 goto not_mpsc;
 518
 519         np = of_find_node_by_path(prop);
 520         if (!np)
 521                 goto not_mpsc;
 522
 523         if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
 524                 goto not_mpsc;
 525
 526         prop = of_get_property(np, "cell-index", NULL);
 527         if (!prop)
 528                 goto not_mpsc;
 529
 530         add_preferred_console("ttyMM", *(int *)prop, NULL);
 531
 532 not_mpsc:
 533         return 0;
 534 }
 535 console_initcall(mv64x60_add_mpsc_console);