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         pdev = platform_device_alloc(MV64XXX_I2C_CTLR_NAME, id);
 365         if (!pdev)
 366                 return -ENOMEM;
 367
 368         err = platform_device_add_resources(pdev, r, 2);
 369         if (err)
 370                 goto error;
 371
 372         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 373         if (err)
 374                 goto error;
 375
 376         err = platform_device_add(pdev);
 377         if (err)
 378                 goto error;
 379
 380         return 0;
 381
 382 error:
 383         platform_device_put(pdev);
 384         return err;
 385 }
 386
 387 /*
 388  * Create mv64x60_wdt platform devices
 389  */
 390 static int __init mv64x60_wdt_device_setup(struct device_node *np, int id)
 391 {
 392         struct resource r;
 393         struct platform_device *pdev;
 394         struct mv64x60_wdt_pdata pdata;
 395         const unsigned int *prop;
 396         int err;
 397
 398         err = of_address_to_resource(np, 0, &r);
 399         if (err)
 400                 return err;
 401
 402         memset(&pdata, 0, sizeof(pdata));
 403
 404         prop = of_get_property(np, "timeout", NULL);
 405         if (!prop)
 406                 return -ENODEV;
 407         pdata.timeout = *prop;
 408
 409         np = of_get_parent(np);
 410         if (!np)
 411                 return -ENODEV;
 412
 413         prop = of_get_property(np, "clock-frequency", NULL);
 414         of_node_put(np);
 415         if (!prop)
 416                 return -ENODEV;
 417         pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */
 418
 419         pdev = platform_device_alloc(MV64x60_WDT_NAME, id);
 420         if (!pdev)
 421                 return -ENOMEM;
 422
 423         err = platform_device_add_resources(pdev, &r, 1);
 424         if (err)
 425                 goto error;
 426
 427         err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
 428         if (err)
 429                 goto error;
 430
 431         err = platform_device_add(pdev);
 432         if (err)
 433                 goto error;
 434
 435         return 0;
 436
 437 error:
 438         platform_device_put(pdev);
 439         return err;
 440 }
 441
 442 static int __init mv64x60_device_setup(void)
 443 {
 444         struct device_node *np = NULL;
 445         int id;
 446         int err;
 447
 448         id = 0;
 449         for_each_compatible_node(np, "serial", "marvell,mpsc")
 450                 if ((err = mv64x60_mpsc_device_setup(np, id++)))
 451                         goto error;
 452
 453         id = 0;
 454         for_each_compatible_node(np, "network", "marvell,mv64x60-eth")
 455                 if ((err = mv64x60_eth_device_setup(np, id++)))
 456                         goto error;
 457
 458         id = 0;
 459         for_each_compatible_node(np, "i2c", "marvell,mv64x60-i2c")
 460                 if ((err = mv64x60_i2c_device_setup(np, id++)))
 461                         goto error;
 462
 463         /* support up to one watchdog timer */
 464         np = of_find_compatible_node(np, NULL, "marvell,mv64x60-wdt");
 465         if (np) {
 466                 if ((err = mv64x60_wdt_device_setup(np, id)))
 467                         goto error;
 468                 of_node_put(np);
 469         }
 470
 471         return 0;
 472
 473 error:
 474         of_node_put(np);
 475         return err;
 476 }
 477 arch_initcall(mv64x60_device_setup);
 478
 479 static int __init mv64x60_add_mpsc_console(void)
 480 {
 481         struct device_node *np = NULL;
 482         const char *prop;
 483
 484         prop = of_get_property(of_chosen, "linux,stdout-path", NULL);
 485         if (prop == NULL)
 486                 goto not_mpsc;
 487
 488         np = of_find_node_by_path(prop);
 489         if (!np)
 490                 goto not_mpsc;
 491
 492         if (!of_device_is_compatible(np, "marvell,mpsc"))
 493                 goto not_mpsc;
 494
 495         prop = of_get_property(np, "block-index", NULL);
 496         if (!prop)
 497                 goto not_mpsc;
 498
 499         add_preferred_console("ttyMM", *(int *)prop, NULL);
 500
 501 not_mpsc:
 502         return 0;
 503 }
 504 console_initcall(mv64x60_add_mpsc_console);