arch/arm/mach-omap2/pm-debug.c

   1 /*
   2  * OMAP Power Management debug routines
   3  *
   4  * Copyright (C) 2005 Texas Instruments, Inc.
   5  * Copyright (C) 2006-2008 Nokia Corporation
   6  *
   7  * Written by:
   8  * Richard Woodruff <r-woodruff2@ti.com>
   9  * Tony Lindgren
  10  * Juha Yrjola
  11  * Amit Kucheria <amit.kucheria@nokia.com>
  12  * Igor Stoppa <igor.stoppa@nokia.com>
  13  * Jouni Hogander
  14  *
  15  * Based on pm.c for omap2
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License version 2 as
  19  * published by the Free Software Foundation.
  20  */
  21
  22 #include <linux/kernel.h>
  23 #include <linux/sched.h>
  24 #include <linux/clk.h>
  25 #include <linux/err.h>
  26 #include <linux/io.h>
  27 #include <linux/module.h>
  28 #include <linux/slab.h>
  29
  30 #include <plat/clock.h>
  31 #include <plat/board.h>
  32 #include <plat/powerdomain.h>
  33 #include <plat/clockdomain.h>
  34
  35 #include "prm.h"
  36 #include "cm.h"
  37 #include "pm.h"
  38
  39 int omap2_pm_debug;
  40
  41 #define DUMP_PRM_MOD_REG(mod, reg)    \
  42         regs[reg_count].name = #mod "." #reg; \
  43         regs[reg_count++].val = prm_read_mod_reg(mod, reg)
  44 #define DUMP_CM_MOD_REG(mod, reg)     \
  45         regs[reg_count].name = #mod "." #reg; \
  46         regs[reg_count++].val = cm_read_mod_reg(mod, reg)
  47 #define DUMP_PRM_REG(reg) \
  48         regs[reg_count].name = #reg; \
  49         regs[reg_count++].val = __raw_readl(reg)
  50 #define DUMP_CM_REG(reg) \
  51         regs[reg_count].name = #reg; \
  52         regs[reg_count++].val = __raw_readl(reg)
  53 #define DUMP_INTC_REG(reg, off) \
  54         regs[reg_count].name = #reg; \
  55         regs[reg_count++].val = \
  56                          __raw_readl(OMAP2_L4_IO_ADDRESS(0x480fe000 + (off)))
  57
  58 void omap2_pm_dump(int mode, int resume, unsigned int us)
  59 {
  60         struct reg {
  61                 const char *name;
  62                 u32 val;
  63         } regs[32];
  64         int reg_count = 0, i;
  65         const char *s1 = NULL, *s2 = NULL;
  66
  67         if (!resume) {
  68 #if 0
  69                 /* MPU */
  70                 DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRM_IRQENABLE_MPU_OFFSET);
  71                 DUMP_CM_MOD_REG(MPU_MOD, OMAP2_CM_CLKSTCTRL);
  72                 DUMP_PRM_MOD_REG(MPU_MOD, OMAP2_PM_PWSTCTRL);
  73                 DUMP_PRM_MOD_REG(MPU_MOD, OMAP2_PM_PWSTST);
  74                 DUMP_PRM_MOD_REG(MPU_MOD, PM_WKDEP);
  75 #endif
  76 #if 0
  77                 /* INTC */
  78                 DUMP_INTC_REG(INTC_MIR0, 0x0084);
  79                 DUMP_INTC_REG(INTC_MIR1, 0x00a4);
  80                 DUMP_INTC_REG(INTC_MIR2, 0x00c4);
  81 #endif
  82 #if 0
  83                 DUMP_CM_MOD_REG(CORE_MOD, CM_FCLKEN1);
  84                 if (cpu_is_omap24xx()) {
  85                         DUMP_CM_MOD_REG(CORE_MOD, OMAP24XX_CM_FCLKEN2);
  86                         DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
  87                                         OMAP2_PRCM_CLKEMUL_CTRL_OFFSET);
  88                         DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
  89                                         OMAP2_PRCM_CLKSRC_CTRL_OFFSET);
  90                 }
  91                 DUMP_CM_MOD_REG(WKUP_MOD, CM_FCLKEN);
  92                 DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN1);
  93                 DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN2);
  94                 DUMP_CM_MOD_REG(WKUP_MOD, CM_ICLKEN);
  95                 DUMP_CM_MOD_REG(PLL_MOD, CM_CLKEN);
  96                 DUMP_CM_MOD_REG(PLL_MOD, CM_AUTOIDLE);
  97                 DUMP_PRM_MOD_REG(CORE_MOD, OMAP2_PM_PWSTST);
  98 #endif
  99 #if 0
 100                 /* DSP */
 101                 if (cpu_is_omap24xx()) {
 102                         DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_FCLKEN);
 103                         DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_ICLKEN);
 104                         DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_IDLEST);
 105                         DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_AUTOIDLE);
 106                         DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSEL);
 107                         DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_CM_CLKSTCTRL);
 108                         DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_RM_RSTCTRL);
 109                         DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_RM_RSTST);
 110                         DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_PM_PWSTCTRL);
 111                         DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_PM_PWSTST);
 112                 }
 113 #endif
 114         } else {
 115                 DUMP_PRM_MOD_REG(CORE_MOD, PM_WKST1);
 116                 if (cpu_is_omap24xx())
 117                         DUMP_PRM_MOD_REG(CORE_MOD, OMAP24XX_PM_WKST2);
 118                 DUMP_PRM_MOD_REG(WKUP_MOD, PM_WKST);
 119                 DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
 120 #if 1
 121                 DUMP_INTC_REG(INTC_PENDING_IRQ0, 0x0098);
 122                 DUMP_INTC_REG(INTC_PENDING_IRQ1, 0x00b8);
 123                 DUMP_INTC_REG(INTC_PENDING_IRQ2, 0x00d8);
 124 #endif
 125         }
 126
 127         switch (mode) {
 128         case 0:
 129                 s1 = "full";
 130                 s2 = "retention";
 131                 break;
 132         case 1:
 133                 s1 = "MPU";
 134                 s2 = "retention";
 135                 break;
 136         case 2:
 137                 s1 = "MPU";
 138                 s2 = "idle";
 139                 break;
 140         }
 141
 142         if (!resume)
 143 #ifdef CONFIG_NO_HZ
 144                 printk(KERN_INFO
 145                        "--- Going to %s %s (next timer after %u ms)\n", s1, s2,
 146                        jiffies_to_msecs(get_next_timer_interrupt(jiffies) -
 147                                         jiffies));
 148 #else
 149                 printk(KERN_INFO "--- Going to %s %s\n", s1, s2);
 150 #endif
 151         else
 152                 printk(KERN_INFO "--- Woke up (slept for %u.%03u ms)\n",
 153                         us / 1000, us % 1000);
 154
 155         for (i = 0; i < reg_count; i++)
 156                 printk(KERN_INFO "%-20s: 0x%08x\n", regs[i].name, regs[i].val);
 157 }
 158
 159 #ifdef CONFIG_DEBUG_FS
 160 #include <linux/debugfs.h>
 161 #include <linux/seq_file.h>
 162
 163 static void pm_dbg_regset_store(u32 *ptr);
 164
 165 struct dentry *pm_dbg_dir;
 166
 167 static int pm_dbg_init_done;
 168
 169 static int __init pm_dbg_init(void);
 170
 171 enum {
 172         DEBUG_FILE_COUNTERS = 0,
 173         DEBUG_FILE_TIMERS,
 174 };
 175
 176 struct pm_module_def {
 177         char name[8]; /* Name of the module */
 178         short type; /* CM or PRM */
 179         unsigned short offset;
 180         int low; /* First register address on this module */
 181         int high; /* Last register address on this module */
 182 };
 183
 184 #define MOD_CM 0
 185 #define MOD_PRM 1
 186
 187 static const struct pm_module_def *pm_dbg_reg_modules;
 188 static const struct pm_module_def omap3_pm_reg_modules[] = {
 189         { "IVA2", MOD_CM, OMAP3430_IVA2_MOD, 0, 0x4c },
 190         { "OCP", MOD_CM, OCP_MOD, 0, 0x10 },
 191         { "MPU", MOD_CM, MPU_MOD, 4, 0x4c },
 192         { "CORE", MOD_CM, CORE_MOD, 0, 0x4c },
 193         { "SGX", MOD_CM, OMAP3430ES2_SGX_MOD, 0, 0x4c },
 194         { "WKUP", MOD_CM, WKUP_MOD, 0, 0x40 },
 195         { "CCR", MOD_CM, PLL_MOD, 0, 0x70 },
 196         { "DSS", MOD_CM, OMAP3430_DSS_MOD, 0, 0x4c },
 197         { "CAM", MOD_CM, OMAP3430_CAM_MOD, 0, 0x4c },
 198         { "PER", MOD_CM, OMAP3430_PER_MOD, 0, 0x4c },
 199         { "EMU", MOD_CM, OMAP3430_EMU_MOD, 0x40, 0x54 },
 200         { "NEON", MOD_CM, OMAP3430_NEON_MOD, 0x20, 0x48 },
 201         { "USB", MOD_CM, OMAP3430ES2_USBHOST_MOD, 0, 0x4c },
 202
 203         { "IVA2", MOD_PRM, OMAP3430_IVA2_MOD, 0x50, 0xfc },
 204         { "OCP", MOD_PRM, OCP_MOD, 4, 0x1c },
 205         { "MPU", MOD_PRM, MPU_MOD, 0x58, 0xe8 },
 206         { "CORE", MOD_PRM, CORE_MOD, 0x58, 0xf8 },
 207         { "SGX", MOD_PRM, OMAP3430ES2_SGX_MOD, 0x58, 0xe8 },
 208         { "WKUP", MOD_PRM, WKUP_MOD, 0xa0, 0xb0 },
 209         { "CCR", MOD_PRM, PLL_MOD, 0x40, 0x70 },
 210         { "DSS", MOD_PRM, OMAP3430_DSS_MOD, 0x58, 0xe8 },
 211         { "CAM", MOD_PRM, OMAP3430_CAM_MOD, 0x58, 0xe8 },
 212         { "PER", MOD_PRM, OMAP3430_PER_MOD, 0x58, 0xe8 },
 213         { "EMU", MOD_PRM, OMAP3430_EMU_MOD, 0x58, 0xe4 },
 214         { "GLBL", MOD_PRM, OMAP3430_GR_MOD, 0x20, 0xe4 },
 215         { "NEON", MOD_PRM, OMAP3430_NEON_MOD, 0x58, 0xe8 },
 216         { "USB", MOD_PRM, OMAP3430ES2_USBHOST_MOD, 0x58, 0xe8 },
 217         { "", 0, 0, 0, 0 },
 218 };
 219
 220 #define PM_DBG_MAX_REG_SETS 4
 221
 222 static void *pm_dbg_reg_set[PM_DBG_MAX_REG_SETS];
 223
 224 static int pm_dbg_get_regset_size(void)
 225 {
 226         static int regset_size;
 227
 228         if (regset_size == 0) {
 229                 int i = 0;
 230
 231                 while (pm_dbg_reg_modules[i].name[0] != 0) {
 232                         regset_size += pm_dbg_reg_modules[i].high +
 233                                 4 - pm_dbg_reg_modules[i].low;
 234                         i++;
 235                 }
 236         }
 237         return regset_size;
 238 }
 239
 240 static int pm_dbg_show_regs(struct seq_file *s, void *unused)
 241 {
 242         int i, j;
 243         unsigned long val;
 244         int reg_set = (int)s->private;
 245         u32 *ptr;
 246         void *store = NULL;
 247         int regs;
 248         int linefeed;
 249
 250         if (reg_set == 0) {
 251                 store = kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL);
 252                 ptr = store;
 253                 pm_dbg_regset_store(ptr);
 254         } else {
 255                 ptr = pm_dbg_reg_set[reg_set - 1];
 256         }
 257
 258         i = 0;
 259
 260         while (pm_dbg_reg_modules[i].name[0] != 0) {
 261                 regs = 0;
 262                 linefeed = 0;
 263                 if (pm_dbg_reg_modules[i].type == MOD_CM)
 264                         seq_printf(s, "MOD: CM_%s (%08x)\n",
 265                                 pm_dbg_reg_modules[i].name,
 266                                 (u32)(OMAP3430_CM_BASE +
 267                                 pm_dbg_reg_modules[i].offset));
 268                 else
 269                         seq_printf(s, "MOD: PRM_%s (%08x)\n",
 270                                 pm_dbg_reg_modules[i].name,
 271                                 (u32)(OMAP3430_PRM_BASE +
 272                                 pm_dbg_reg_modules[i].offset));
 273
 274                 for (j = pm_dbg_reg_modules[i].low;
 275                         j <= pm_dbg_reg_modules[i].high; j += 4) {
 276                         val = *(ptr++);
 277                         if (val != 0) {
 278                                 regs++;
 279                                 if (linefeed) {
 280                                         seq_printf(s, "\n");
 281                                         linefeed = 0;
 282                                 }
 283                                 seq_printf(s, "  %02x => %08lx", j, val);
 284                                 if (regs % 4 == 0)
 285                                         linefeed = 1;
 286                         }
 287                 }
 288                 seq_printf(s, "\n");
 289                 i++;
 290         }
 291
 292         if (store != NULL)
 293                 kfree(store);
 294
 295         return 0;
 296 }
 297
 298 static void pm_dbg_regset_store(u32 *ptr)
 299 {
 300         int i, j;
 301         u32 val;
 302
 303         i = 0;
 304
 305         while (pm_dbg_reg_modules[i].name[0] != 0) {
 306                 for (j = pm_dbg_reg_modules[i].low;
 307                         j <= pm_dbg_reg_modules[i].high; j += 4) {
 308                         if (pm_dbg_reg_modules[i].type == MOD_CM)
 309                                 val = cm_read_mod_reg(
 310                                         pm_dbg_reg_modules[i].offset, j);
 311                         else
 312                                 val = prm_read_mod_reg(
 313                                         pm_dbg_reg_modules[i].offset, j);
 314                         *(ptr++) = val;
 315                 }
 316                 i++;
 317         }
 318 }
 319
 320 int pm_dbg_regset_save(int reg_set)
 321 {
 322         if (pm_dbg_reg_set[reg_set-1] == NULL)
 323                 return -EINVAL;
 324
 325         pm_dbg_regset_store(pm_dbg_reg_set[reg_set-1]);
 326
 327         return 0;
 328 }
 329
 330 static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
 331         "OFF",
 332         "RET",
 333         "INA",
 334         "ON"
 335 };
 336
 337 void pm_dbg_update_time(struct powerdomain *pwrdm, int prev)
 338 {
 339         s64 t;
 340
 341         if (!pm_dbg_init_done)
 342                 return ;
 343
 344         /* Update timer for previous state */
 345         t = sched_clock();
 346
 347         pwrdm->state_timer[prev] += t - pwrdm->timer;
 348
 349         pwrdm->timer = t;
 350 }
 351
 352 static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user)
 353 {
 354         struct seq_file *s = (struct seq_file *)user;
 355
 356         if (strcmp(clkdm->name, "emu_clkdm") == 0 ||
 357                 strcmp(clkdm->name, "wkup_clkdm") == 0 ||
 358                 strncmp(clkdm->name, "dpll", 4) == 0)
 359                 return 0;
 360
 361         seq_printf(s, "%s->%s (%d)", clkdm->name,
 362                         clkdm->pwrdm.ptr->name,
 363                         atomic_read(&clkdm->usecount));
 364         seq_printf(s, "\n");
 365
 366         return 0;
 367 }
 368
 369 static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user)
 370 {
 371         struct seq_file *s = (struct seq_file *)user;
 372         int i;
 373
 374         if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
 375                 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
 376                 strncmp(pwrdm->name, "dpll", 4) == 0)
 377                 return 0;
 378
 379         if (pwrdm->state != pwrdm_read_pwrst(pwrdm))
 380                 printk(KERN_ERR "pwrdm state mismatch(%s) %d != %d\n",
 381                         pwrdm->name, pwrdm->state, pwrdm_read_pwrst(pwrdm));
 382
 383         seq_printf(s, "%s (%s)", pwrdm->name,
 384                         pwrdm_state_names[pwrdm->state]);
 385         for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
 386                 seq_printf(s, ",%s:%d", pwrdm_state_names[i],
 387                         pwrdm->state_counter[i]);
 388
 389         seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter);
 390         for (i = 0; i < pwrdm->banks; i++)
 391                 seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1,
 392                                 pwrdm->ret_mem_off_counter[i]);
 393
 394         seq_printf(s, "\n");
 395
 396         return 0;
 397 }
 398
 399 static int pwrdm_dbg_show_timer(struct powerdomain *pwrdm, void *user)
 400 {
 401         struct seq_file *s = (struct seq_file *)user;
 402         int i;
 403
 404         if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
 405                 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
 406                 strncmp(pwrdm->name, "dpll", 4) == 0)
 407                 return 0;
 408
 409         pwrdm_state_switch(pwrdm);
 410
 411         seq_printf(s, "%s (%s)", pwrdm->name,
 412                 pwrdm_state_names[pwrdm->state]);
 413
 414         for (i = 0; i < 4; i++)
 415                 seq_printf(s, ",%s:%lld", pwrdm_state_names[i],
 416                         pwrdm->state_timer[i]);
 417
 418         seq_printf(s, "\n");
 419         return 0;
 420 }
 421
 422 static int pm_dbg_show_counters(struct seq_file *s, void *unused)
 423 {
 424         pwrdm_for_each(pwrdm_dbg_show_counter, s);
 425         clkdm_for_each(clkdm_dbg_show_counter, s);
 426
 427         return 0;
 428 }
 429
 430 static int pm_dbg_show_timers(struct seq_file *s, void *unused)
 431 {
 432         pwrdm_for_each(pwrdm_dbg_show_timer, s);
 433         return 0;
 434 }
 435
 436 static int pm_dbg_open(struct inode *inode, struct file *file)
 437 {
 438         switch ((int)inode->i_private) {
 439         case DEBUG_FILE_COUNTERS:
 440                 return single_open(file, pm_dbg_show_counters,
 441                         &inode->i_private);
 442         case DEBUG_FILE_TIMERS:
 443         default:
 444                 return single_open(file, pm_dbg_show_timers,
 445                         &inode->i_private);
 446         };
 447 }
 448
 449 static int pm_dbg_reg_open(struct inode *inode, struct file *file)
 450 {
 451         return single_open(file, pm_dbg_show_regs, inode->i_private);
 452 }
 453
 454 static const struct file_operations debug_fops = {
 455         .open           = pm_dbg_open,
 456         .read           = seq_read,
 457         .llseek         = seq_lseek,
 458         .release        = single_release,
 459 };
 460
 461 static const struct file_operations debug_reg_fops = {
 462         .open           = pm_dbg_reg_open,
 463         .read           = seq_read,
 464         .llseek         = seq_lseek,
 465         .release        = single_release,
 466 };
 467
 468 int pm_dbg_regset_init(int reg_set)
 469 {
 470         char name[2];
 471
 472         if (!pm_dbg_init_done)
 473                 pm_dbg_init();
 474
 475         if (reg_set < 1 || reg_set > PM_DBG_MAX_REG_SETS ||
 476                 pm_dbg_reg_set[reg_set-1] != NULL)
 477                 return -EINVAL;
 478
 479         pm_dbg_reg_set[reg_set-1] =
 480                 kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL);
 481
 482         if (pm_dbg_reg_set[reg_set-1] == NULL)
 483                 return -ENOMEM;
 484
 485         if (pm_dbg_dir != NULL) {
 486                 sprintf(name, "%d", reg_set);
 487
 488                 (void) debugfs_create_file(name, S_IRUGO,
 489                         pm_dbg_dir, (void *)reg_set, &debug_reg_fops);
 490         }
 491
 492         return 0;
 493 }
 494
 495 static int pwrdm_suspend_get(void *data, u64 *val)
 496 {
 497         int ret;
 498         ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
 499         *val = ret;
 500
 501         if (ret >= 0)
 502                 return 0;
 503         return *val;
 504 }
 505
 506 static int pwrdm_suspend_set(void *data, u64 val)
 507 {
 508         return omap3_pm_set_suspend_state((struct powerdomain *)data, (int)val);
 509 }
 510
 511 DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
 512                         pwrdm_suspend_set, "%llu\n");
 513
 514 static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
 515 {
 516         int i;
 517         s64 t;
 518         struct dentry *d;
 519
 520         t = sched_clock();
 521
 522         for (i = 0; i < 4; i++)
 523                 pwrdm->state_timer[i] = 0;
 524
 525         pwrdm->timer = t;
 526
 527         if (strncmp(pwrdm->name, "dpll", 4) == 0)
 528                 return 0;
 529
 530         d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
 531
 532         (void) debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d,
 533                         (void *)pwrdm, &pwrdm_suspend_fops);
 534
 535         return 0;
 536 }
 537
 538 static int option_get(void *data, u64 *val)
 539 {
 540         u32 *option = data;
 541
 542         *val = *option;
 543
 544         return 0;
 545 }
 546
 547 static int option_set(void *data, u64 val)
 548 {
 549         u32 *option = data;
 550
 551         if (option == &wakeup_timer_milliseconds && val >= 1000)
 552                 return -EINVAL;
 553
 554         *option = val;
 555
 556         if (option == &enable_off_mode)
 557                 omap3_pm_off_mode_enable(val);
 558
 559         return 0;
 560 }
 561
 562 DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
 563
 564 static int __init pm_dbg_init(void)
 565 {
 566         int i;
 567         struct dentry *d;
 568         char name[2];
 569
 570         if (pm_dbg_init_done)
 571                 return 0;
 572
 573         if (cpu_is_omap34xx())
 574                 pm_dbg_reg_modules = omap3_pm_reg_modules;
 575         else {
 576                 printk(KERN_ERR "%s: only OMAP3 supported\n", __func__);
 577                 return -ENODEV;
 578         }
 579
 580         d = debugfs_create_dir("pm_debug", NULL);
 581         if (IS_ERR(d))
 582                 return PTR_ERR(d);
 583
 584         (void) debugfs_create_file("count", S_IRUGO,
 585                 d, (void *)DEBUG_FILE_COUNTERS, &debug_fops);
 586         (void) debugfs_create_file("time", S_IRUGO,
 587                 d, (void *)DEBUG_FILE_TIMERS, &debug_fops);
 588
 589         pwrdm_for_each(pwrdms_setup, (void *)d);
 590
 591         pm_dbg_dir = debugfs_create_dir("registers", d);
 592         if (IS_ERR(pm_dbg_dir))
 593                 return PTR_ERR(pm_dbg_dir);
 594
 595         (void) debugfs_create_file("current", S_IRUGO,
 596                 pm_dbg_dir, (void *)0, &debug_reg_fops);
 597
 598         for (i = 0; i < PM_DBG_MAX_REG_SETS; i++)
 599                 if (pm_dbg_reg_set[i] != NULL) {
 600                         sprintf(name, "%d", i+1);
 601                         (void) debugfs_create_file(name, S_IRUGO,
 602                                 pm_dbg_dir, (void *)(i+1), &debug_reg_fops);
 603
 604                 }
 605
 606         (void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUGO, d,
 607                                    &enable_off_mode, &pm_dbg_option_fops);
 608         (void) debugfs_create_file("sleep_while_idle", S_IRUGO | S_IWUGO, d,
 609                                    &sleep_while_idle, &pm_dbg_option_fops);
 610         (void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUGO, d,
 611                                    &wakeup_timer_seconds, &pm_dbg_option_fops);
 612         pm_dbg_init_done = 1;
 613
 614         return 0;
 615 }
 616 arch_initcall(pm_dbg_init);
 617
 618 #endif