arch/powerpc/sysdev/fsl_soc.c

   1 /*
   2  * FSL SoC setup code
   3  *
   4  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <linux/config.h>
  13 #include <linux/stddef.h>
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/errno.h>
  17 #include <linux/major.h>
  18 #include <linux/delay.h>
  19 #include <linux/irq.h>
  20 #include <linux/module.h>
  21 #include <linux/device.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/fsl_devices.h>
  24
  25 #include <asm/system.h>
  26 #include <asm/atomic.h>
  27 #include <asm/io.h>
  28 #include <asm/irq.h>
  29 #include <asm/prom.h>
  30 #include <sysdev/fsl_soc.h>
  31 #include <mm/mmu_decl.h>
  32
  33 static phys_addr_t immrbase = -1;
  34
  35 phys_addr_t get_immrbase(void)
  36 {
  37         struct device_node *soc;
  38
  39         if (immrbase != -1)
  40                 return immrbase;
  41
  42         soc = of_find_node_by_type(NULL, "soc");
  43         if (soc != 0) {
  44                 unsigned int size;
  45                 void *prop = get_property(soc, "reg", &size);
  46                 immrbase = of_translate_address(soc, prop);
  47                 of_node_put(soc);
  48         };
  49
  50         return immrbase;
  51 }
  52 EXPORT_SYMBOL(get_immrbase);
  53
  54 static const char * gfar_tx_intr = "tx";
  55 static const char * gfar_rx_intr = "rx";
  56 static const char * gfar_err_intr = "error";
  57
  58 static int __init gfar_of_init(void)
  59 {
  60         struct device_node *np;
  61         unsigned int i;
  62         struct platform_device *mdio_dev, *gfar_dev;
  63         struct resource res;
  64         int ret;
  65
  66         for (np = NULL, i = 0; (np = of_find_compatible_node(np, "mdio", "gianfar")) != NULL; i++) {
  67                 int k;
  68                 struct device_node *child = NULL;
  69                 struct gianfar_mdio_data mdio_data;
  70
  71                 memset(&res, 0, sizeof(res));
  72                 memset(&mdio_data, 0, sizeof(mdio_data));
  73
  74                 ret = of_address_to_resource(np, 0, &res);
  75                 if (ret)
  76                         goto mdio_err;
  77
  78                 mdio_dev = platform_device_register_simple("fsl-gianfar_mdio", res.start, &res, 1);
  79                 if (IS_ERR(mdio_dev)) {
  80                         ret = PTR_ERR(mdio_dev);
  81                         goto mdio_err;
  82                 }
  83
  84                 for (k = 0; k < 32; k++)
  85                         mdio_data.irq[k] = -1;
  86
  87                 while ((child = of_get_next_child(np, child)) != NULL) {
  88                         if (child->n_intrs) {
  89                                 u32 *id = (u32 *) get_property(child, "reg", NULL);
  90                                 mdio_data.irq[*id] = child->intrs[0].line;
  91                         }
  92                 }
  93
  94                 ret = platform_device_add_data(mdio_dev, &mdio_data, sizeof(struct gianfar_mdio_data));
  95                 if (ret)
  96                         goto mdio_unreg;
  97         }
  98
  99         for (np = NULL, i = 0; (np = of_find_compatible_node(np, "network", "gianfar")) != NULL; i++) {
 100                 struct resource r[4];
 101                 struct device_node *phy, *mdio;
 102                 struct gianfar_platform_data gfar_data;
 103                 unsigned int *id;
 104                 char *model;
 105                 void *mac_addr;
 106                 phandle *ph;
 107
 108                 memset(r, 0, sizeof(r));
 109                 memset(&gfar_data, 0, sizeof(gfar_data));
 110
 111                 ret = of_address_to_resource(np, 0, &r[0]);
 112                 if (ret)
 113                         goto gfar_err;
 114
 115                 r[1].start = np->intrs[0].line;
 116                 r[1].end = np->intrs[0].line;
 117                 r[1].flags = IORESOURCE_IRQ;
 118
 119                 model = get_property(np, "model", NULL);
 120
 121                 /* If we aren't the FEC we have multiple interrupts */
 122                 if (model && strcasecmp(model, "FEC")) {
 123                         r[1].name = gfar_tx_intr;
 124
 125                         r[2].name = gfar_rx_intr;
 126                         r[2].start = np->intrs[1].line;
 127                         r[2].end = np->intrs[1].line;
 128                         r[2].flags = IORESOURCE_IRQ;
 129
 130                         r[3].name = gfar_err_intr;
 131                         r[3].start = np->intrs[2].line;
 132                         r[3].end = np->intrs[2].line;
 133                         r[3].flags = IORESOURCE_IRQ;
 134                 }
 135
 136                 gfar_dev = platform_device_register_simple("fsl-gianfar", i, &r[0], np->n_intrs + 1);
 137
 138                 if (IS_ERR(gfar_dev)) {
 139                         ret = PTR_ERR(gfar_dev);
 140                         goto gfar_err;
 141                 }
 142
 143                 mac_addr = get_property(np, "address", NULL);
 144                 memcpy(gfar_data.mac_addr, mac_addr, 6);
 145
 146                 if (model && !strcasecmp(model, "TSEC"))
 147                         gfar_data.device_flags =
 148                                 FSL_GIANFAR_DEV_HAS_GIGABIT |
 149                                 FSL_GIANFAR_DEV_HAS_COALESCE |
 150                                 FSL_GIANFAR_DEV_HAS_RMON |
 151                                 FSL_GIANFAR_DEV_HAS_MULTI_INTR;
 152                 if (model && !strcasecmp(model, "eTSEC"))
 153                         gfar_data.device_flags =
 154                                 FSL_GIANFAR_DEV_HAS_GIGABIT |
 155                                 FSL_GIANFAR_DEV_HAS_COALESCE |
 156                                 FSL_GIANFAR_DEV_HAS_RMON |
 157                                 FSL_GIANFAR_DEV_HAS_MULTI_INTR |
 158                                 FSL_GIANFAR_DEV_HAS_CSUM |
 159                                 FSL_GIANFAR_DEV_HAS_VLAN |
 160                                 FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
 161
 162                 ph = (phandle *) get_property(np, "phy-handle", NULL);
 163                 phy = of_find_node_by_phandle(*ph);
 164
 165                 if (phy == NULL) {
 166                         ret = -ENODEV;
 167                         goto gfar_unreg;
 168                 }
 169
 170                 mdio = of_get_parent(phy);
 171
 172                 id = (u32 *) get_property(phy, "reg", NULL);
 173                 ret = of_address_to_resource(mdio, 0, &res);
 174                 if (ret) {
 175                         of_node_put(phy);
 176                         of_node_put(mdio);
 177                         goto gfar_unreg;
 178                 }
 179
 180                 gfar_data.phy_id = *id;
 181                 gfar_data.bus_id = res.start;
 182
 183                 of_node_put(phy);
 184                 of_node_put(mdio);
 185
 186                 ret = platform_device_add_data(gfar_dev, &gfar_data, sizeof(struct gianfar_platform_data));
 187                 if (ret)
 188                         goto gfar_unreg;
 189         }
 190
 191         return 0;
 192
 193 mdio_unreg:
 194         platform_device_unregister(mdio_dev);
 195 mdio_err:
 196         return ret;
 197
 198 gfar_unreg:
 199         platform_device_unregister(gfar_dev);
 200 gfar_err:
 201         return ret;
 202 }
 203 arch_initcall(gfar_of_init);
 204
 205 static int __init fsl_i2c_of_init(void)
 206 {
 207         struct device_node *np;
 208         unsigned int i;
 209         struct platform_device *i2c_dev;
 210         int ret;
 211
 212         for (np = NULL, i = 0; (np = of_find_compatible_node(np, "i2c", "fsl-i2c")) != NULL; i++) {
 213                 struct resource r[2];
 214                 struct fsl_i2c_platform_data i2c_data;
 215                 unsigned char * flags = NULL;
 216
 217                 memset(&r, 0, sizeof(r));
 218                 memset(&i2c_data, 0, sizeof(i2c_data));
 219
 220                 ret = of_address_to_resource(np, 0, &r[0]);
 221                 if (ret)
 222                         goto i2c_err;
 223
 224                 r[1].start = np->intrs[0].line;
 225                 r[1].end = np->intrs[0].line;
 226                 r[1].flags = IORESOURCE_IRQ;
 227
 228                 i2c_dev = platform_device_register_simple("fsl-i2c", i, r, 2);
 229                 if (IS_ERR(i2c_dev)) {
 230                         ret = PTR_ERR(i2c_dev);
 231                         goto i2c_err;
 232                 }
 233
 234                 i2c_data.device_flags = 0;
 235                 flags = get_property(np, "dfsrr", NULL);
 236                 if (flags)
 237                         i2c_data.device_flags |= FSL_I2C_DEV_SEPARATE_DFSRR;
 238
 239                 flags = get_property(np, "fsl5200-clocking", NULL);
 240                 if (flags)
 241                         i2c_data.device_flags |= FSL_I2C_DEV_CLOCK_5200;
 242
 243                 ret = platform_device_add_data(i2c_dev, &i2c_data, sizeof(struct fsl_i2c_platform_data));
 244                 if (ret)
 245                         goto i2c_unreg;
 246         }
 247
 248         return 0;
 249
 250 i2c_unreg:
 251         platform_device_unregister(i2c_dev);
 252 i2c_err:
 253         return ret;
 254 }
 255 arch_initcall(fsl_i2c_of_init);
 256
 257 #ifdef CONFIG_PPC_83xx
 258 static int __init mpc83xx_wdt_init(void)
 259 {
 260         struct resource r;
 261         struct device_node *soc, *np;
 262         struct platform_device *dev;
 263         unsigned int *freq;
 264         int ret;
 265
 266         np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt");
 267
 268         if (!np) {
 269                 ret = -ENODEV;
 270                 goto mpc83xx_wdt_nodev;
 271         }
 272
 273         soc = of_find_node_by_type(NULL, "soc");
 274
 275         if (!soc) {
 276                 ret = -ENODEV;
 277                 goto mpc83xx_wdt_nosoc;
 278         }
 279
 280         freq = (unsigned int *)get_property(soc, "bus-frequency", NULL);
 281         if (!freq) {
 282                 ret = -ENODEV;
 283                 goto mpc83xx_wdt_err;
 284         }
 285
 286         memset(&r, 0, sizeof(r));
 287
 288         ret = of_address_to_resource(np, 0, &r);
 289         if (ret)
 290                 goto mpc83xx_wdt_err;
 291
 292         dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1);
 293         if (IS_ERR(dev)) {
 294                 ret = PTR_ERR(dev);
 295                 goto mpc83xx_wdt_err;
 296         }
 297
 298         ret = platform_device_add_data(dev, freq, sizeof(int));
 299         if (ret)
 300                 goto mpc83xx_wdt_unreg;
 301
 302         of_node_put(soc);
 303         of_node_put(np);
 304
 305         return 0;
 306
 307 mpc83xx_wdt_unreg:
 308         platform_device_unregister(dev);
 309 mpc83xx_wdt_err:
 310         of_node_put(soc);
 311 mpc83xx_wdt_nosoc:
 312         of_node_put(np);
 313 mpc83xx_wdt_nodev:
 314         return ret;
 315 }
 316 arch_initcall(mpc83xx_wdt_init);
 317 #endif