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 struct of_device_id __initdata of_mv64x60_devices[] = {
  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[1];
 218         int err;
 219
 220         err = of_address_to_resource(np, 0, &r[0]);
 221         if (err)
 222                 return ERR_PTR(err);
 223
 224         pdev = platform_device_register_simple(MV643XX_ETH_SHARED_NAME, id,
 225                                                r, 1);
 226         return pdev;
 227 }
 228
 229 static int __init mv64x60_eth_device_setup(struct device_node *np, int id,
 230                                            struct platform_device *shared_pdev)
 231 {
 232         struct resource r[1];
 233         struct mv643xx_eth_platform_data pdata;
 234         struct platform_device *pdev;
 235         struct device_node *phy;
 236         const u8 *mac_addr;
 237         const int *prop;
 238         const phandle *ph;
 239         int err;
 240
 241         memset(r, 0, sizeof(r));
 242         of_irq_to_resource(np, 0, &r[0]);
 243
 244         memset(&pdata, 0, sizeof(pdata));
 245
 246         pdata.shared = shared_pdev;
 247
 248         prop = of_get_property(np, "reg", NULL);
 249         if (!prop)
 250                 return -ENODEV;
 251         pdata.port_number = *prop;
 252
 253         mac_addr = of_get_mac_address(np);
 254         if (mac_addr)
 255                 memcpy(pdata.mac_addr, mac_addr, 6);
 256
 257         prop = of_get_property(np, "speed", NULL);
 258         if (prop)
 259                 pdata.speed = *prop;
 260
 261         prop = of_get_property(np, "tx_queue_size", NULL);
 262         if (prop)
 263                 pdata.tx_queue_size = *prop;
 264
 265         prop = of_get_property(np, "rx_queue_size", NULL);
 266         if (prop)
 267                 pdata.rx_queue_size = *prop;
 268
 269         prop = of_get_property(np, "tx_sram_addr", NULL);
 270         if (prop)
 271                 pdata.tx_sram_addr = *prop;
 272
 273         prop = of_get_property(np, "tx_sram_size", NULL);
 274         if (prop)
 275                 pdata.tx_sram_size = *prop;
 276
 277         prop = of_get_property(np, "rx_sram_addr", NULL);
 278         if (prop)
 279                 pdata.rx_sram_addr = *prop;
 280
 281         prop = of_get_property(np, "rx_sram_size", NULL);
 282         if (prop)
 283                 pdata.rx_sram_size = *prop;
 284
 285         ph = of_get_property(np, "phy", NULL);
 286         if (!ph)
 287                 return -ENODEV;
 288
 289         phy = of_find_node_by_phandle(*ph);
 290         if (phy == NULL)
 291                 return -ENODEV;
 292
 293         prop = of_get_property(phy, "reg", NULL);
 294         if (prop)
 295                 pdata.phy_addr = MV643XX_ETH_PHY_ADDR(*prop);
 296
 297         of_node_put(phy);
 298
 299         pdev = platform_device_alloc(MV643XX_ETH_NAME, id);
 300         if (!pdev)
 301                 return -ENOMEM;
 302
 303         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 304         err = platform_device_add_resources(pdev, r, 1);
 305         if (err)
 306                 goto error;
 307
 308         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 309         if (err)
 310                 goto error;
 311
 312         err = platform_device_add(pdev);
 313         if (err)
 314                 goto error;
 315
 316         return 0;
 317
 318 error:
 319         platform_device_put(pdev);
 320         return err;
 321 }
 322
 323 /*
 324  * Create mv64x60_i2c platform devices
 325  */
 326 static int __init mv64x60_i2c_device_setup(struct device_node *np, int id)
 327 {
 328         struct resource r[2];
 329         struct platform_device *pdev;
 330         struct mv64xxx_i2c_pdata pdata;
 331         const unsigned int *prop;
 332         int err;
 333
 334         memset(r, 0, sizeof(r));
 335
 336         err = of_address_to_resource(np, 0, &r[0]);
 337         if (err)
 338                 return err;
 339
 340         of_irq_to_resource(np, 0, &r[1]);
 341
 342         memset(&pdata, 0, sizeof(pdata));
 343
 344         pdata.freq_m = 8;       /* default */
 345         prop = of_get_property(np, "freq_m", NULL);
 346         if (prop)
 347                 pdata.freq_m = *prop;
 348
 349         pdata.freq_n = 3;       /* default */
 350         prop = of_get_property(np, "freq_n", NULL);
 351         if (prop)
 352                 pdata.freq_n = *prop;
 353
 354         pdata.timeout = 1000;                           /* default: 1 second */
 355
 356         pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
 357         if (!pdev)
 358                 return -ENOMEM;
 359
 360         err = platform_device_add_resources(pdev, r, 2);
 361         if (err)
 362                 goto error;
 363
 364         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 365         if (err)
 366                 goto error;
 367
 368         err = platform_device_add(pdev);
 369         if (err)
 370                 goto error;
 371
 372         return 0;
 373
 374 error:
 375         platform_device_put(pdev);
 376         return err;
 377 }
 378
 379 /*
 380  * Create mv64x60_wdt platform devices
 381  */
 382 static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
 383 {
 384         struct resource r;
 385         struct platform_device *pdev;
 386         struct mv64x60_wdt_pdata pdata;
 387         const unsigned int *prop;
 388         int err;
 389
 390         err = of_address_to_resource(np, 0, &r);
 391         if (err)
 392                 return err;
 393
 394         memset(&pdata, 0, sizeof(pdata));
 395
 396         pdata.timeout = 10;                     /* Default: 10 seconds */
 397
 398         np = of_get_parent(np);
 399         if (!np)
 400                 return -ENODEV;
 401
 402         prop = of_get_property(np, "clock-frequency", NULL);
 403         of_node_put(np);
 404         if (!prop)
 405                 return -ENODEV;
 406         pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
 407
 408         pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
 409         if (!pdev)
 410                 return -ENOMEM;
 411
 412         err = platform_device_add_resources(pdev, &r, 1);
 413         if (err)
 414                 goto error;
 415
 416         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 417         if (err)
 418                 goto error;
 419
 420         err = platform_device_add(pdev);
 421         if (err)
 422                 goto error;
 423
 424         return 0;
 425
 426 error:
 427         platform_device_put(pdev);
 428         return err;
 429 }
 430
 431 static int __init mv64x60_device_setup(void)
 432 {
 433         struct device_node *np, *np2;
 434         struct platform_device *pdev;
 435         int id, id2;
 436         int err;
 437
 438         id = 0;
 439         for_each_compatible_node(np, "serial", "marvell,mv64360-mpsc") {
 440                 err = mv64x60_mpsc_device_setup(np, id++);
 441                 if (err)
 442                         printk(KERN_ERR "Failed to initialize MV64x60 "
 443                                         "serial device %s: error %d.\n",
 444                                         np->full_name, err);
 445         }
 446
 447         id = 0;
 448         id2 = 0;
 449         for_each_compatible_node(np, NULL, "marvell,mv64360-eth-group") {
 450                 pdev = mv64x60_eth_register_shared_pdev(np, id++);
 451                 if (IS_ERR(pdev)) {
 452                         err = PTR_ERR(pdev);
 453                         printk(KERN_ERR "Failed to initialize MV64x60 "
 454                                         "network block %s: error %d.\n",
 455                                         np->full_name, err);
 456                         continue;
 457                 }
 458                 for_each_child_of_node(np, np2) {
 459                         if (!of_device_is_compatible(np2,
 460                                         "marvell,mv64360-eth"))
 461                                 continue;
 462                         err = mv64x60_eth_device_setup(np2, id2++, pdev);
 463                         if (err)
 464                                 printk(KERN_ERR "Failed to initialize "
 465                                                 "MV64x60 network device %s: "
 466                                                 "error %d.\n",
 467                                                 np2->full_name, err);
 468                 }
 469         }
 470
 471         id = 0;
 472         for_each_compatible_node(np, "i2c", "marvell,mv64360-i2c") {
 473                 err = mv64x60_i2c_device_setup(np, id++);
 474                 if (err)
 475                         printk(KERN_ERR "Failed to initialize MV64x60 I2C "
 476                                         "bus %s: error %d.\n",
 477                                         np->full_name, err);
 478         }
 479
 480         /* support up to one watchdog timer */
 481         np = of_find_compatible_node(np, NULL, "marvell,mv64360-wdt");
 482         if (np) {
 483                 if ((err = mv64x60_wdt_device_setup(np, id)))
 484                         printk(KERN_ERR "Failed to initialize MV64x60 "
 485                                         "Watchdog %s: error %d.\n",
 486                                         np->full_name, err);
 487                 of_node_put(np);
 488         }
 489
 490         /* Now add every node that is on the device bus */
 491         for_each_compatible_node(np, NULL, "marvell,mv64360")
 492                 of_platform_bus_probe(np, of_mv64x60_devices, NULL);
 493
 494         return 0;
 495 }
 496 arch_initcall(mv64x60_device_setup);
 497
 498 static int __init mv64x60_add_mpsc_console(void)
 499 {
 500         struct device_node *np = NULL;
 501         const char *prop;
 502
 503         prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
 504         if (prop == NULL)
 505                 goto not_mpsc;
 506
 507         np = of_find_node_by_path(prop);
 508         if (!np)
 509                 goto not_mpsc;
 510
 511         if (!of_device_is_compatible(np, "marvell,mv64360-mpsc"))
 512                 goto not_mpsc;
 513
 514         prop = of_get_property(np, "cell-index", NULL);
 515         if (!prop)
 516                 goto not_mpsc;
 517
 518         add_preferred_console("ttyMM", *(int *)prop, NULL);
 519
 520 not_mpsc:
 521         return 0;
 522 }
 523 console_initcall(mv64x60_add_mpsc_console);