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