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