SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/macintosh/via-pmu.c

   1 /*
   2  * Device driver for the via-pmu on Apple Powermacs.
   3  *
   4  * The VIA (versatile interface adapter) interfaces to the PMU,
   5  * a 6805 microprocessor core whose primary function is to control
   6  * battery charging and system power on the PowerBook 3400 and 2400.
   7  * The PMU also controls the ADB (Apple Desktop Bus) which connects
   8  * to the keyboard and mouse, as well as the non-volatile RAM
   9  * and the RTC (real time clock) chip.
  10  *
  11  * Copyright (C) 1998 Paul Mackerras and Fabio Riccardi.
  12  * Copyright (C) 2001-2002 Benjamin Herrenschmidt
  13  *
  14  * THIS DRIVER IS BECOMING A TOTAL MESS !
  15  *  - Cleanup atomically disabling reply to PMU events after
  16  *    a sleep or a freq. switch
  17  *  - Move sleep code out of here to pmac_pm, merge into new
  18  *    common PM infrastructure
  19  *  - Move backlight code out as well
  20  *  - Save/Restore PCI space properly
  21  *
  22  */
  23 #include <stdarg.h>
  24 #include <linux/config.h>
  25 #include <linux/types.h>
  26 #include <linux/errno.h>
  27 #include <linux/kernel.h>
  28 #include <linux/delay.h>
  29 #include <linux/sched.h>
  30 #include <linux/miscdevice.h>
  31 #include <linux/blkdev.h>
  32 #include <linux/pci.h>
  33 #include <linux/slab.h>
  34 #include <linux/poll.h>
  35 #include <linux/adb.h>
  36 #include <linux/pmu.h>
  37 #include <linux/cuda.h>
  38 #include <linux/smp_lock.h>
  39 #include <linux/module.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/pm.h>
  42 #include <linux/proc_fs.h>
  43 #include <linux/init.h>
  44 #include <linux/interrupt.h>
  45 #include <linux/device.h>
  46 #include <linux/sysdev.h>
  47 #include <linux/suspend.h>
  48 #include <linux/syscalls.h>
  49 #include <linux/cpu.h>
  50 #include <asm/prom.h>
  51 #include <asm/machdep.h>
  52 #include <asm/io.h>
  53 #include <asm/pgtable.h>
  54 #include <asm/system.h>
  55 #include <asm/sections.h>
  56 #include <asm/irq.h>
  57 #include <asm/pmac_feature.h>
  58 #include <asm/uaccess.h>
  59 #include <asm/mmu_context.h>
  60 #include <asm/cputable.h>
  61 #include <asm/time.h>
  62 #ifdef CONFIG_PMAC_BACKLIGHT
  63 #include <asm/backlight.h>
  64 #endif
  65
  66 #ifdef CONFIG_PPC32
  67 #include <asm/open_pic.h>
  68 #endif
  69
  70 /* Some compile options */
  71 #undef SUSPEND_USES_PMU
  72 #define DEBUG_SLEEP
  73 #undef HACKED_PCI_SAVE
  74
  75 /* Misc minor number allocated for /dev/pmu */
  76 #define PMU_MINOR               154
  77
  78 /* How many iterations between battery polls */
  79 #define BATTERY_POLLING_COUNT   2
  80
  81 static volatile unsigned char __iomem *via;
  82
  83 /* VIA registers - spaced 0x200 bytes apart */
  84 #define RS              0x200           /* skip between registers */
  85 #define B               0               /* B-side data */
  86 #define A               RS              /* A-side data */
  87 #define DIRB            (2*RS)          /* B-side direction (1=output) */
  88 #define DIRA            (3*RS)          /* A-side direction (1=output) */
  89 #define T1CL            (4*RS)          /* Timer 1 ctr/latch (low 8 bits) */
  90 #define T1CH            (5*RS)          /* Timer 1 counter (high 8 bits) */
  91 #define T1LL            (6*RS)          /* Timer 1 latch (low 8 bits) */
  92 #define T1LH            (7*RS)          /* Timer 1 latch (high 8 bits) */
  93 #define T2CL            (8*RS)          /* Timer 2 ctr/latch (low 8 bits) */
  94 #define T2CH            (9*RS)          /* Timer 2 counter (high 8 bits) */
  95 #define SR              (10*RS)         /* Shift register */
  96 #define ACR             (11*RS)         /* Auxiliary control register */
  97 #define PCR             (12*RS)         /* Peripheral control register */
  98 #define IFR             (13*RS)         /* Interrupt flag register */
  99 #define IER             (14*RS)         /* Interrupt enable register */
 100 #define ANH             (15*RS)         /* A-side data, no handshake */
 101
 102 /* Bits in B data register: both active low */
 103 #define TACK            0x08            /* Transfer acknowledge (input) */
 104 #define TREQ            0x10            /* Transfer request (output) */
 105
 106 /* Bits in ACR */
 107 #define SR_CTRL         0x1c            /* Shift register control bits */
 108 #define SR_EXT          0x0c            /* Shift on external clock */
 109 #define SR_OUT          0x10            /* Shift out if 1 */
 110
 111 /* Bits in IFR and IER */
 112 #define IER_SET         0x80            /* set bits in IER */
 113 #define IER_CLR         0               /* clear bits in IER */
 114 #define SR_INT          0x04            /* Shift register full/empty */
 115 #define CB2_INT         0x08
 116 #define CB1_INT         0x10            /* transition on CB1 input */
 117
 118 static volatile enum pmu_state {
 119         idle,
 120         sending,
 121         intack,
 122         reading,
 123         reading_intr,
 124         locked,
 125 } pmu_state;
 126
 127 static volatile enum int_data_state {
 128         int_data_empty,
 129         int_data_fill,
 130         int_data_ready,
 131         int_data_flush
 132 } int_data_state[2] = { int_data_empty, int_data_empty };
 133
 134 static struct adb_request *current_req;
 135 static struct adb_request *last_req;
 136 static struct adb_request *req_awaiting_reply;
 137 static unsigned char interrupt_data[2][32];
 138 static int interrupt_data_len[2];
 139 static int int_data_last;
 140 static unsigned char *reply_ptr;
 141 static int data_index;
 142 static int data_len;
 143 static volatile int adb_int_pending;
 144 static volatile int disable_poll;
 145 static struct adb_request bright_req_1, bright_req_2;
 146 static struct device_node *vias;
 147 static int pmu_kind = PMU_UNKNOWN;
 148 static int pmu_fully_inited = 0;
 149 static int pmu_has_adb;
 150 static unsigned char __iomem *gpio_reg = NULL;
 151 static int gpio_irq = -1;
 152 static int gpio_irq_enabled = -1;
 153 static volatile int pmu_suspended = 0;
 154 static spinlock_t pmu_lock;
 155 static u8 pmu_intr_mask;
 156 static int pmu_version;
 157 static int drop_interrupts;
 158 #ifdef CONFIG_PMAC_PBOOK
 159 static int option_lid_wakeup = 1;
 160 static int sleep_in_progress;
 161 #endif /* CONFIG_PMAC_PBOOK */
 162 static unsigned long async_req_locks;
 163 static unsigned int pmu_irq_stats[11];
 164
 165 static struct proc_dir_entry *proc_pmu_root;
 166 static struct proc_dir_entry *proc_pmu_info;
 167 static struct proc_dir_entry *proc_pmu_irqstats;
 168 static struct proc_dir_entry *proc_pmu_options;
 169 static int option_server_mode;
 170
 171 #ifdef CONFIG_PMAC_PBOOK
 172 int pmu_battery_count;
 173 int pmu_cur_battery;
 174 unsigned int pmu_power_flags;
 175 struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
 176 static int query_batt_timer = BATTERY_POLLING_COUNT;
 177 static struct adb_request batt_req;
 178 static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES];
 179 #endif /* CONFIG_PMAC_PBOOK */
 180
 181 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
 182 extern int disable_kernel_backlight;
 183 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
 184
 185 int __fake_sleep;
 186 int asleep;
 187 struct notifier_block *sleep_notifier_list;
 188
 189 #ifdef CONFIG_ADB
 190 static int adb_dev_map = 0;
 191 static int pmu_adb_flags;
 192
 193 static int pmu_probe(void);
 194 static int pmu_init(void);
 195 static int pmu_send_request(struct adb_request *req, int sync);
 196 static int pmu_adb_autopoll(int devs);
 197 static int pmu_adb_reset_bus(void);
 198 #endif /* CONFIG_ADB */
 199
 200 static int init_pmu(void);
 201 static int pmu_queue_request(struct adb_request *req);
 202 static void pmu_start(void);
 203 static irqreturn_t via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs);
 204 static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs);
 205 static int proc_get_info(char *page, char **start, off_t off,
 206                           int count, int *eof, void *data);
 207 static int proc_get_irqstats(char *page, char **start, off_t off,
 208                           int count, int *eof, void *data);
 209 #ifdef CONFIG_PMAC_BACKLIGHT
 210 static int pmu_set_backlight_level(int level, void* data);
 211 static int pmu_set_backlight_enable(int on, int level, void* data);
 212 #endif /* CONFIG_PMAC_BACKLIGHT */
 213 #ifdef CONFIG_PMAC_PBOOK
 214 static void pmu_pass_intr(unsigned char *data, int len);
 215 static int proc_get_batt(char *page, char **start, off_t off,
 216                         int count, int *eof, void *data);
 217 #endif /* CONFIG_PMAC_PBOOK */
 218 static int proc_read_options(char *page, char **start, off_t off,
 219                         int count, int *eof, void *data);
 220 static int proc_write_options(struct file *file, const char __user *buffer,
 221                         unsigned long count, void *data);
 222
 223 #ifdef CONFIG_ADB
 224 struct adb_driver via_pmu_driver = {
 225         "PMU",
 226         pmu_probe,
 227         pmu_init,
 228         pmu_send_request,
 229         pmu_adb_autopoll,
 230         pmu_poll_adb,
 231         pmu_adb_reset_bus
 232 };
 233 #endif /* CONFIG_ADB */
 234
 235 extern void low_sleep_handler(void);
 236 extern void enable_kernel_altivec(void);
 237 extern void enable_kernel_fp(void);
 238
 239 #ifdef DEBUG_SLEEP
 240 int pmu_polled_request(struct adb_request *req);
 241 int pmu_wink(struct adb_request *req);
 242 #endif
 243
 244 /*
 245  * This table indicates for each PMU opcode:
 246  * - the number of data bytes to be sent with the command, or -1
 247  *   if a length byte should be sent,
 248  * - the number of response bytes which the PMU will return, or
 249  *   -1 if it will send a length byte.
 250  */
 251 static const s8 pmu_data_len[256][2] __openfirmwaredata = {
 252 /*         0       1       2       3       4       5       6       7  */
 253 /*00*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 254 /*08*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 255 /*10*/  { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 256 /*18*/  { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
 257 /*20*/  {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
 258 /*28*/  { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
 259 /*30*/  { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 260 /*38*/  { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
 261 /*40*/  { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 262 /*48*/  { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
 263 /*50*/  { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
 264 /*58*/  { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
 265 /*60*/  { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 266 /*68*/  { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
 267 /*70*/  { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 268 /*78*/  { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
 269 /*80*/  { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 270 /*88*/  { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 271 /*90*/  { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 272 /*98*/  { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 273 /*a0*/  { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
 274 /*a8*/  { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 275 /*b0*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 276 /*b8*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 277 /*c0*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 278 /*c8*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 279 /*d0*/  { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 280 /*d8*/  { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
 281 /*e0*/  {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
 282 /*e8*/  { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
 283 /*f0*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 284 /*f8*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 285 };
 286
 287 static char *pbook_type[] = {
 288         "Unknown PowerBook",
 289         "PowerBook 2400/3400/3500(G3)",
 290         "PowerBook G3 Series",
 291         "1999 PowerBook G3",
 292         "Core99"
 293 };
 294
 295 #ifdef CONFIG_PMAC_BACKLIGHT
 296 static struct backlight_controller pmu_backlight_controller = {
 297         pmu_set_backlight_enable,
 298         pmu_set_backlight_level
 299 };
 300 #endif /* CONFIG_PMAC_BACKLIGHT */
 301
 302 int __openfirmware
 303 find_via_pmu(void)
 304 {
 305         if (via != 0)
 306                 return 1;
 307         vias = find_devices("via-pmu");
 308         if (vias == 0)
 309                 return 0;
 310         if (vias->next != 0)
 311                 printk(KERN_WARNING "Warning: only using 1st via-pmu\n");
 312
 313         if (vias->n_addrs < 1 || vias->n_intrs < 1) {
 314                 printk(KERN_ERR "via-pmu: %d addresses, %d interrupts!\n",
 315                        vias->n_addrs, vias->n_intrs);
 316                 if (vias->n_addrs < 1 || vias->n_intrs < 1)
 317                         return 0;
 318         }
 319
 320         spin_lock_init(&pmu_lock);
 321
 322         pmu_has_adb = 1;
 323
 324         pmu_intr_mask = PMU_INT_PCEJECT |
 325                         PMU_INT_SNDBRT |
 326                         PMU_INT_ADB |
 327                         PMU_INT_TICK;
 328
 329         if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0)
 330             || device_is_compatible(vias->parent, "ohare")))
 331                 pmu_kind = PMU_OHARE_BASED;
 332         else if (device_is_compatible(vias->parent, "paddington"))
 333                 pmu_kind = PMU_PADDINGTON_BASED;
 334         else if (device_is_compatible(vias->parent, "heathrow"))
 335                 pmu_kind = PMU_HEATHROW_BASED;
 336         else if (device_is_compatible(vias->parent, "Keylargo")
 337                  || device_is_compatible(vias->parent, "K2-Keylargo")) {
 338                 struct device_node *gpio, *gpiop;
 339
 340                 pmu_kind = PMU_KEYLARGO_BASED;
 341                 pmu_has_adb = (find_type_devices("adb") != NULL);
 342                 pmu_intr_mask = PMU_INT_PCEJECT |
 343                                 PMU_INT_SNDBRT |
 344                                 PMU_INT_ADB |
 345                                 PMU_INT_TICK |
 346                                 PMU_INT_ENVIRONMENT;
 347
 348                 gpiop = find_devices("gpio");
 349                 if (gpiop && gpiop->n_addrs) {
 350                         gpio_reg = ioremap(gpiop->addrs->address, 0x10);
 351                         gpio = find_devices("extint-gpio1");
 352                         if (gpio == NULL)
 353                                 gpio = find_devices("pmu-interrupt");
 354                         if (gpio && gpio->parent == gpiop && gpio->n_intrs)
 355                                 gpio_irq = gpio->intrs[0].line;
 356                 }
 357         } else
 358                 pmu_kind = PMU_UNKNOWN;
 359
 360         via = ioremap(vias->addrs->address, 0x2000);
 361
 362         out_8(&via[IER], IER_CLR | 0x7f);       /* disable all intrs */
 363         out_8(&via[IFR], 0x7f);                 /* clear IFR */
 364
 365         pmu_state = idle;
 366
 367         if (!init_pmu()) {
 368                 via = NULL;
 369                 return 0;
 370         }
 371
 372         printk(KERN_INFO "PMU driver %d initialized for %s, firmware: %02x\n",
 373                PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
 374
 375         sys_ctrler = SYS_CTRLER_PMU;
 376
 377         return 1;
 378 }
 379
 380 #ifdef CONFIG_ADB
 381 static int __openfirmware
 382 pmu_probe(void)
 383 {
 384         return vias == NULL? -ENODEV: 0;
 385 }
 386
 387 static int __init
 388 pmu_init(void)
 389 {
 390         if (vias == NULL)
 391                 return -ENODEV;
 392         return 0;
 393 }
 394 #endif /* CONFIG_ADB */
 395
 396 /*
 397  * We can't wait until pmu_init gets called, that happens too late.
 398  * It happens after IDE and SCSI initialization, which can take a few
 399  * seconds, and by that time the PMU could have given up on us and
 400  * turned us off.
 401  * Thus this is called with arch_initcall rather than device_initcall.
 402  */
 403 static int __init via_pmu_start(void)
 404 {
 405         if (vias == NULL)
 406                 return -ENODEV;
 407
 408         bright_req_1.complete = 1;
 409         bright_req_2.complete = 1;
 410 #ifdef CONFIG_PMAC_PBOOK
 411         batt_req.complete = 1;
 412 #endif
 413
 414 #ifdef CONFIG_PPC32
 415         if (pmu_kind == PMU_KEYLARGO_BASED)
 416                 openpic_set_irq_priority(vias->intrs[0].line,
 417                                          OPENPIC_PRIORITY_DEFAULT + 1);
 418 #endif
 419
 420         if (request_irq(vias->intrs[0].line, via_pmu_interrupt, 0, "VIA-PMU",
 421                         (void *)0)) {
 422                 printk(KERN_ERR "VIA-PMU: can't get irq %d\n",
 423                        vias->intrs[0].line);
 424                 return -EAGAIN;
 425         }
 426
 427         if (pmu_kind == PMU_KEYLARGO_BASED && gpio_irq != -1) {
 428                 if (request_irq(gpio_irq, gpio1_interrupt, 0, "GPIO1 ADB", (void *)0))
 429                         printk(KERN_ERR "pmu: can't get irq %d (GPIO1)\n", gpio_irq);
 430                 gpio_irq_enabled = 1;
 431         }
 432
 433         /* Enable interrupts */
 434         out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
 435
 436         pmu_fully_inited = 1;
 437
 438         /* Make sure PMU settle down before continuing. This is _very_ important
 439          * since the IDE probe may shut interrupts down for quite a bit of time. If
 440          * a PMU communication is pending while this happens, the PMU may timeout
 441          * Not that on Core99 machines, the PMU keeps sending us environement
 442          * messages, we should find a way to either fix IDE or make it call
 443          * pmu_suspend() before masking interrupts. This can also happens while
 444          * scolling with some fbdevs.
 445          */
 446         do {
 447                 pmu_poll();
 448         } while (pmu_state != idle);
 449
 450         return 0;
 451 }
 452
 453 arch_initcall(via_pmu_start);
 454
 455 /*
 456  * This has to be done after pci_init, which is a subsys_initcall.
 457  */
 458 static int __init via_pmu_dev_init(void)
 459 {
 460         if (vias == NULL)
 461                 return -ENODEV;
 462
 463 #ifndef CONFIG_PPC64
 464         request_OF_resource(vias, 0, NULL);
 465 #endif
 466 #ifdef CONFIG_PMAC_BACKLIGHT
 467         /* Enable backlight */
 468         register_backlight_controller(&pmu_backlight_controller, NULL, "pmu");
 469 #endif /* CONFIG_PMAC_BACKLIGHT */
 470
 471 #ifdef CONFIG_PMAC_PBOOK
 472         if (machine_is_compatible("AAPL,3400/2400") ||
 473                 machine_is_compatible("AAPL,3500")) {
 474                 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 475                         NULL, PMAC_MB_INFO_MODEL, 0);
 476                 pmu_battery_count = 1;
 477                 if (mb == PMAC_TYPE_COMET)
 478                         pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
 479                 else
 480                         pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
 481         } else if (machine_is_compatible("AAPL,PowerBook1998") ||
 482                 machine_is_compatible("PowerBook1,1")) {
 483                 pmu_battery_count = 2;
 484                 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
 485                 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
 486         } else {
 487                 struct device_node* prim = find_devices("power-mgt");
 488                 u32 *prim_info = NULL;
 489                 if (prim)
 490                         prim_info = (u32 *)get_property(prim, "prim-info", NULL);
 491                 if (prim_info) {
 492                         /* Other stuffs here yet unknown */
 493                         pmu_battery_count = (prim_info[6] >> 16) & 0xff;
 494                         pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
 495                         if (pmu_battery_count > 1)
 496                                 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
 497                 }
 498         }
 499 #endif /* CONFIG_PMAC_PBOOK */
 500         /* Create /proc/pmu */
 501         proc_pmu_root = proc_mkdir("pmu", NULL);
 502         if (proc_pmu_root) {
 503 #ifdef CONFIG_PMAC_PBOOK
 504                 int i;
 505
 506                 for (i=0; i<pmu_battery_count; i++) {
 507                         char title[16];
 508                         sprintf(title, "battery_%d", i);
 509                         proc_pmu_batt[i] = create_proc_read_entry(title, 0, proc_pmu_root,
 510                                                 proc_get_batt, (void *)i);
 511                 }
 512 #endif /* CONFIG_PMAC_PBOOK */
 513
 514                 proc_pmu_info = create_proc_read_entry("info", 0, proc_pmu_root,
 515                                         proc_get_info, NULL);
 516                 proc_pmu_irqstats = create_proc_read_entry("interrupts", 0, proc_pmu_root,
 517                                         proc_get_irqstats, NULL);
 518                 proc_pmu_options = create_proc_entry("options", 0600, proc_pmu_root);
 519                 if (proc_pmu_options) {
 520                         proc_pmu_options->nlink = 1;
 521                         proc_pmu_options->read_proc = proc_read_options;
 522                         proc_pmu_options->write_proc = proc_write_options;
 523                 }
 524         }
 525         return 0;
 526 }
 527
 528 device_initcall(via_pmu_dev_init);
 529
 530 static int __openfirmware
 531 init_pmu(void)
 532 {
 533         int timeout;
 534         struct adb_request req;
 535
 536         out_8(&via[B], via[B] | TREQ);                  /* negate TREQ */
 537         out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK);  /* TACK in, TREQ out */
 538
 539         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
 540         timeout =  100000;
 541         while (!req.complete) {
 542                 if (--timeout < 0) {
 543                         printk(KERN_ERR "init_pmu: no response from PMU\n");
 544                         return 0;
 545                 }
 546                 udelay(10);
 547                 pmu_poll();
 548         }
 549
 550         /* ack all pending interrupts */
 551         timeout = 100000;
 552         interrupt_data[0][0] = 1;
 553         while (interrupt_data[0][0] || pmu_state != idle) {
 554                 if (--timeout < 0) {
 555                         printk(KERN_ERR "init_pmu: timed out acking intrs\n");
 556                         return 0;
 557                 }
 558                 if (pmu_state == idle)
 559                         adb_int_pending = 1;
 560                 via_pmu_interrupt(0, NULL, NULL);
 561                 udelay(10);
 562         }
 563
 564         /* Tell PMU we are ready.  */
 565         if (pmu_kind == PMU_KEYLARGO_BASED) {
 566                 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
 567                 while (!req.complete)
 568                         pmu_poll();
 569         }
 570
 571         /* Read PMU version */
 572         pmu_request(&req, NULL, 1, PMU_GET_VERSION);
 573         pmu_wait_complete(&req);
 574         if (req.reply_len > 0)
 575                 pmu_version = req.reply[0];
 576
 577         /* Read server mode setting */
 578         if (pmu_kind == PMU_KEYLARGO_BASED) {
 579                 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS,
 580                             PMU_PWR_GET_POWERUP_EVENTS);
 581                 pmu_wait_complete(&req);
 582                 if (req.reply_len == 2) {
 583                         if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT)
 584                                 option_server_mode = 1;
 585                         printk(KERN_INFO "via-pmu: Server Mode is %s\n",
 586                                option_server_mode ? "enabled" : "disabled");
 587                 }
 588         }
 589         return 1;
 590 }
 591
 592 int
 593 pmu_get_model(void)
 594 {
 595         return pmu_kind;
 596 }
 597
 598 #ifndef CONFIG_PPC64
 599 static inline void wakeup_decrementer(void)
 600 {
 601         set_dec(tb_ticks_per_jiffy);
 602         /* No currently-supported powerbook has a 601,
 603          * so use get_tbl, not native
 604          */
 605         last_jiffy_stamp(0) = tb_last_stamp = get_tbl();
 606 }
 607 #endif
 608
 609 static void pmu_set_server_mode(int server_mode)
 610 {
 611         struct adb_request req;
 612
 613         if (pmu_kind != PMU_KEYLARGO_BASED)
 614                 return;
 615
 616         option_server_mode = server_mode;
 617         pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS);
 618         pmu_wait_complete(&req);
 619         if (req.reply_len < 2)
 620                 return;
 621         if (server_mode)
 622                 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
 623                             PMU_PWR_SET_POWERUP_EVENTS,
 624                             req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
 625         else
 626                 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
 627                             PMU_PWR_CLR_POWERUP_EVENTS,
 628                             req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
 629         pmu_wait_complete(&req);
 630 }
 631
 632 #ifdef CONFIG_PMAC_PBOOK
 633
 634 /* This new version of the code for 2400/3400/3500 powerbooks
 635  * is inspired from the implementation in gkrellm-pmu
 636  */
 637 static void __pmac
 638 done_battery_state_ohare(struct adb_request* req)
 639 {
 640         /* format:
 641          *  [0]    :  flags
 642          *    0x01 :  AC indicator
 643          *    0x02 :  charging
 644          *    0x04 :  battery exist
 645          *    0x08 :
 646          *    0x10 :
 647          *    0x20 :  full charged
 648          *    0x40 :  pcharge reset
 649          *    0x80 :  battery exist
 650          *
 651          *  [1][2] :  battery voltage
 652          *  [3]    :  CPU temperature
 653          *  [4]    :  battery temperature
 654          *  [5]    :  current
 655          *  [6][7] :  pcharge
 656          *              --tkoba
 657          */
 658         unsigned int bat_flags = PMU_BATT_TYPE_HOOPER;
 659         long pcharge, charge, vb, vmax, lmax;
 660         long vmax_charging, vmax_charged;
 661         long amperage, voltage, time, max;
 662         int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 663                         NULL, PMAC_MB_INFO_MODEL, 0);
 664
 665         if (req->reply[0] & 0x01)
 666                 pmu_power_flags |= PMU_PWR_AC_PRESENT;
 667         else
 668                 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
 669
 670         if (mb == PMAC_TYPE_COMET) {
 671                 vmax_charged = 189;
 672                 vmax_charging = 213;
 673                 lmax = 6500;
 674         } else {
 675                 vmax_charged = 330;
 676                 vmax_charging = 330;
 677                 lmax = 6500;
 678         }
 679         vmax = vmax_charged;
 680
 681         /* If battery installed */
 682         if (req->reply[0] & 0x04) {
 683                 bat_flags |= PMU_BATT_PRESENT;
 684                 if (req->reply[0] & 0x02)
 685                         bat_flags |= PMU_BATT_CHARGING;
 686                 vb = (req->reply[1] << 8) | req->reply[2];
 687                 voltage = (vb * 265 + 72665) / 10;
 688                 amperage = req->reply[5];
 689                 if ((req->reply[0] & 0x01) == 0) {
 690                         if (amperage > 200)
 691                                 vb += ((amperage - 200) * 15)/100;
 692                 } else if (req->reply[0] & 0x02) {
 693                         vb = (vb * 97) / 100;
 694                         vmax = vmax_charging;
 695                 }
 696                 charge = (100 * vb) / vmax;
 697                 if (req->reply[0] & 0x40) {
 698                         pcharge = (req->reply[6] << 8) + req->reply[7];
 699                         if (pcharge > lmax)
 700                                 pcharge = lmax;
 701                         pcharge *= 100;
 702                         pcharge = 100 - pcharge / lmax;
 703                         if (pcharge < charge)
 704                                 charge = pcharge;
 705                 }
 706                 if (amperage > 0)
 707                         time = (charge * 16440) / amperage;
 708                 else
 709                         time = 0;
 710                 max = 100;
 711                 amperage = -amperage;
 712         } else
 713                 charge = max = amperage = voltage = time = 0;
 714
 715         pmu_batteries[pmu_cur_battery].flags = bat_flags;
 716         pmu_batteries[pmu_cur_battery].charge = charge;
 717         pmu_batteries[pmu_cur_battery].max_charge = max;
 718         pmu_batteries[pmu_cur_battery].amperage = amperage;
 719         pmu_batteries[pmu_cur_battery].voltage = voltage;
 720         pmu_batteries[pmu_cur_battery].time_remaining = time;
 721
 722         clear_bit(0, &async_req_locks);
 723 }
 724
 725 static void __pmac
 726 done_battery_state_smart(struct adb_request* req)
 727 {
 728         /* format:
 729          *  [0] : format of this structure (known: 3,4,5)
 730          *  [1] : flags
 731          *
 732          *  format 3 & 4:
 733          *
 734          *  [2] : charge
 735          *  [3] : max charge
 736          *  [4] : current
 737          *  [5] : voltage
 738          *
 739          *  format 5:
 740          *
 741          *  [2][3] : charge
 742          *  [4][5] : max charge
 743          *  [6][7] : current
 744          *  [8][9] : voltage
 745          */
 746
 747         unsigned int bat_flags = PMU_BATT_TYPE_SMART;
 748         int amperage;
 749         unsigned int capa, max, voltage;
 750
 751         if (req->reply[1] & 0x01)
 752                 pmu_power_flags |= PMU_PWR_AC_PRESENT;
 753         else
 754                 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
 755
 756
 757         capa = max = amperage = voltage = 0;
 758
 759         if (req->reply[1] & 0x04) {
 760                 bat_flags |= PMU_BATT_PRESENT;
 761                 switch(req->reply[0]) {
 762                         case 3:
 763                         case 4: capa = req->reply[2];
 764                                 max = req->reply[3];
 765                                 amperage = *((signed char *)&req->reply[4]);
 766                                 voltage = req->reply[5];
 767                                 break;
 768                         case 5: capa = (req->reply[2] << 8) | req->reply[3];
 769                                 max = (req->reply[4] << 8) | req->reply[5];
 770                                 amperage = *((signed short *)&req->reply[6]);
 771                                 voltage = (req->reply[8] << 8) | req->reply[9];
 772                                 break;
 773                         default:
 774                                 printk(KERN_WARNING "pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
 775                                         req->reply_len, req->reply[0], req->reply[1], req->reply[2], req->reply[3]);
 776                                 break;
 777                 }
 778         }
 779
 780         if ((req->reply[1] & 0x01) && (amperage > 0))
 781                 bat_flags |= PMU_BATT_CHARGING;
 782
 783         pmu_batteries[pmu_cur_battery].flags = bat_flags;
 784         pmu_batteries[pmu_cur_battery].charge = capa;
 785         pmu_batteries[pmu_cur_battery].max_charge = max;
 786         pmu_batteries[pmu_cur_battery].amperage = amperage;
 787         pmu_batteries[pmu_cur_battery].voltage = voltage;
 788         if (amperage) {
 789                 if ((req->reply[1] & 0x01) && (amperage > 0))
 790                         pmu_batteries[pmu_cur_battery].time_remaining
 791                                 = ((max-capa) * 3600) / amperage;
 792                 else
 793                         pmu_batteries[pmu_cur_battery].time_remaining
 794                                 = (capa * 3600) / (-amperage);
 795         } else
 796                 pmu_batteries[pmu_cur_battery].time_remaining = 0;
 797
 798         pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count;
 799
 800         clear_bit(0, &async_req_locks);
 801 }
 802
 803 static void __pmac
 804 query_battery_state(void)
 805 {
 806         if (test_and_set_bit(0, &async_req_locks))
 807                 return;
 808         if (pmu_kind == PMU_OHARE_BASED)
 809                 pmu_request(&batt_req, done_battery_state_ohare,
 810                         1, PMU_BATTERY_STATE);
 811         else
 812                 pmu_request(&batt_req, done_battery_state_smart,
 813                         2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
 814 }
 815
 816 #endif /* CONFIG_PMAC_PBOOK */
 817
 818 static int __pmac
 819 proc_get_info(char *page, char **start, off_t off,
 820                 int count, int *eof, void *data)
 821 {
 822         char* p = page;
 823
 824         p += sprintf(p, "PMU driver version     : %d\n", PMU_DRIVER_VERSION);
 825         p += sprintf(p, "PMU firmware version   : %02x\n", pmu_version);
 826 #ifdef CONFIG_PMAC_PBOOK
 827         p += sprintf(p, "AC Power               : %d\n",
 828                 ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0));
 829         p += sprintf(p, "Battery count          : %d\n", pmu_battery_count);
 830 #endif /* CONFIG_PMAC_PBOOK */
 831
 832         return p - page;
 833 }
 834
 835 static int __pmac
 836 proc_get_irqstats(char *page, char **start, off_t off,
 837                   int count, int *eof, void *data)
 838 {
 839         int i;
 840         char* p = page;
 841         static const char *irq_names[] = {
 842                 "Total CB1 triggered events",
 843                 "Total GPIO1 triggered events",
 844                 "PC-Card eject button",
 845                 "Sound/Brightness button",
 846                 "ADB message",
 847                 "Battery state change",
 848                 "Environment interrupt",
 849                 "Tick timer",
 850                 "Ghost interrupt (zero len)",
 851                 "Empty interrupt (empty mask)",
 852                 "Max irqs in a row"
 853         };
 854
 855         for (i=0; i<11; i++) {
 856                 p += sprintf(p, " %2u: %10u (%s)\n",
 857                              i, pmu_irq_stats[i], irq_names[i]);
 858         }
 859         return p - page;
 860 }
 861
 862 #ifdef CONFIG_PMAC_PBOOK
 863 static int __pmac
 864 proc_get_batt(char *page, char **start, off_t off,
 865                 int count, int *eof, void *data)
 866 {
 867         int batnum = (int)data;
 868         char *p = page;
 869
 870         p += sprintf(p, "\n");
 871         p += sprintf(p, "flags      : %08x\n",
 872                 pmu_batteries[batnum].flags);
 873         p += sprintf(p, "charge     : %d\n",
 874                 pmu_batteries[batnum].charge);
 875         p += sprintf(p, "max_charge : %d\n",
 876                 pmu_batteries[batnum].max_charge);
 877         p += sprintf(p, "current    : %d\n",
 878                 pmu_batteries[batnum].amperage);
 879         p += sprintf(p, "voltage    : %d\n",
 880                 pmu_batteries[batnum].voltage);
 881         p += sprintf(p, "time rem.  : %d\n",
 882                 pmu_batteries[batnum].time_remaining);
 883
 884         return p - page;
 885 }
 886 #endif /* CONFIG_PMAC_PBOOK */
 887
 888 static int __pmac
 889 proc_read_options(char *page, char **start, off_t off,
 890                         int count, int *eof, void *data)
 891 {
 892         char *p = page;
 893
 894 #ifdef CONFIG_PMAC_PBOOK
 895         if (pmu_kind == PMU_KEYLARGO_BASED &&
 896             pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
 897                 p += sprintf(p, "lid_wakeup=%d\n", option_lid_wakeup);
 898 #endif /* CONFIG_PMAC_PBOOK */
 899         if (pmu_kind == PMU_KEYLARGO_BASED)
 900                 p += sprintf(p, "server_mode=%d\n", option_server_mode);
 901
 902         return p - page;
 903 }
 904
 905 static int __pmac
 906 proc_write_options(struct file *file, const char __user *buffer,
 907                         unsigned long count, void *data)
 908 {
 909         char tmp[33];
 910         char *label, *val;
 911         unsigned long fcount = count;
 912
 913         if (!count)
 914                 return -EINVAL;
 915         if (count > 32)
 916                 count = 32;
 917         if (copy_from_user(tmp, buffer, count))
 918                 return -EFAULT;
 919         tmp[count] = 0;
 920
 921         label = tmp;
 922         while(*label == ' ')
 923                 label++;
 924         val = label;
 925         while(*val && (*val != '=')) {
 926                 if (*val == ' ')
 927                         *val = 0;
 928                 val++;
 929         }
 930         if ((*val) == 0)
 931                 return -EINVAL;
 932         *(val++) = 0;
 933         while(*val == ' ')
 934                 val++;
 935 #ifdef CONFIG_PMAC_PBOOK
 936         if (pmu_kind == PMU_KEYLARGO_BASED &&
 937             pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
 938                 if (!strcmp(label, "lid_wakeup"))
 939                         option_lid_wakeup = ((*val) == '1');
 940 #endif /* CONFIG_PMAC_PBOOK */
 941         if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) {
 942                 int new_value;
 943                 new_value = ((*val) == '1');
 944                 if (new_value != option_server_mode)
 945                         pmu_set_server_mode(new_value);
 946         }
 947         return fcount;
 948 }
 949
 950 #ifdef CONFIG_ADB
 951 /* Send an ADB command */
 952 static int __pmac
 953 pmu_send_request(struct adb_request *req, int sync)
 954 {
 955         int i, ret;
 956
 957         if ((vias == NULL) || (!pmu_fully_inited)) {
 958                 req->complete = 1;
 959                 return -ENXIO;
 960         }
 961
 962         ret = -EINVAL;
 963
 964         switch (req->data[0]) {
 965         case PMU_PACKET:
 966                 for (i = 0; i < req->nbytes - 1; ++i)
 967                         req->data[i] = req->data[i+1];
 968                 --req->nbytes;
 969                 if (pmu_data_len[req->data[0]][1] != 0) {
 970                         req->reply[0] = ADB_RET_OK;
 971                         req->reply_len = 1;
 972                 } else
 973                         req->reply_len = 0;
 974                 ret = pmu_queue_request(req);
 975                 break;
 976         case CUDA_PACKET:
 977                 switch (req->data[1]) {
 978                 case CUDA_GET_TIME:
 979                         if (req->nbytes != 2)
 980                                 break;
 981                         req->data[0] = PMU_READ_RTC;
 982                         req->nbytes = 1;
 983                         req->reply_len = 3;
 984                         req->reply[0] = CUDA_PACKET;
 985                         req->reply[1] = 0;
 986                         req->reply[2] = CUDA_GET_TIME;
 987                         ret = pmu_queue_request(req);
 988                         break;
 989                 case CUDA_SET_TIME:
 990                         if (req->nbytes != 6)
 991                                 break;
 992                         req->data[0] = PMU_SET_RTC;
 993                         req->nbytes = 5;
 994                         for (i = 1; i <= 4; ++i)
 995                                 req->data[i] = req->data[i+1];
 996                         req->reply_len = 3;
 997                         req->reply[0] = CUDA_PACKET;
 998                         req->reply[1] = 0;
 999                         req->reply[2] = CUDA_SET_TIME;
1000                         ret = pmu_queue_request(req);
1001                         break;
1002                 }
1003                 break;
1004         case ADB_PACKET:
1005                 if (!pmu_has_adb)
1006                         return -ENXIO;
1007                 for (i = req->nbytes - 1; i > 1; --i)
1008                         req->data[i+2] = req->data[i];
1009                 req->data[3] = req->nbytes - 2;
1010                 req->data[2] = pmu_adb_flags;
1011                 /*req->data[1] = req->data[1];*/
1012                 req->data[0] = PMU_ADB_CMD;
1013                 req->nbytes += 2;
1014                 req->reply_expected = 1;
1015                 req->reply_len = 0;
1016                 ret = pmu_queue_request(req);
1017                 break;
1018         }
1019         if (ret) {
1020                 req->complete = 1;
1021                 return ret;
1022         }
1023
1024         if (sync)
1025                 while (!req->complete)
1026                         pmu_poll();
1027
1028         return 0;
1029 }
1030
1031 /* Enable/disable autopolling */
1032 static int __pmac
1033 pmu_adb_autopoll(int devs)
1034 {
1035         struct adb_request req;
1036
1037         if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1038                 return -ENXIO;
1039
1040         if (devs) {
1041                 adb_dev_map = devs;
1042                 pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
1043                             adb_dev_map >> 8, adb_dev_map);
1044                 pmu_adb_flags = 2;
1045         } else {
1046                 pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
1047                 pmu_adb_flags = 0;
1048         }
1049         while (!req.complete)
1050                 pmu_poll();
1051         return 0;
1052 }
1053
1054 /* Reset the ADB bus */
1055 static int __pmac
1056 pmu_adb_reset_bus(void)
1057 {
1058         struct adb_request req;
1059         int save_autopoll = adb_dev_map;
1060
1061         if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1062                 return -ENXIO;
1063
1064         /* anyone got a better idea?? */
1065         pmu_adb_autopoll(0);
1066
1067         req.nbytes = 5;
1068         req.done = NULL;
1069         req.data[0] = PMU_ADB_CMD;
1070         req.data[1] = 0;
1071         req.data[2] = ADB_BUSRESET;
1072         req.data[3] = 0;
1073         req.data[4] = 0;
1074         req.reply_len = 0;
1075         req.reply_expected = 1;
1076         if (pmu_queue_request(&req) != 0) {
1077                 printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
1078                 return -EIO;
1079         }
1080         pmu_wait_complete(&req);
1081
1082         if (save_autopoll != 0)
1083                 pmu_adb_autopoll(save_autopoll);
1084
1085         return 0;
1086 }
1087 #endif /* CONFIG_ADB */
1088
1089 /* Construct and send a pmu request */
1090 int __openfirmware
1091 pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
1092             int nbytes, ...)
1093 {
1094         va_list list;
1095         int i;
1096
1097         if (vias == NULL)
1098                 return -ENXIO;
1099
1100         if (nbytes < 0 || nbytes > 32) {
1101                 printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
1102                 req->complete = 1;
1103                 return -EINVAL;
1104         }
1105         req->nbytes = nbytes;
1106         req->done = done;
1107         va_start(list, nbytes);
1108         for (i = 0; i < nbytes; ++i)
1109                 req->data[i] = va_arg(list, int);
1110         va_end(list);
1111         req->reply_len = 0;
1112         req->reply_expected = 0;
1113         return pmu_queue_request(req);
1114 }
1115
1116 int __pmac
1117 pmu_queue_request(struct adb_request *req)
1118 {
1119         unsigned long flags;
1120         int nsend;
1121
1122         if (via == NULL) {
1123                 req->complete = 1;
1124                 return -ENXIO;
1125         }
1126         if (req->nbytes <= 0) {
1127                 req->complete = 1;
1128                 return 0;
1129         }
1130         nsend = pmu_data_len[req->data[0]][0];
1131         if (nsend >= 0 && req->nbytes != nsend + 1) {
1132                 req->complete = 1;
1133                 return -EINVAL;
1134         }
1135
1136         req->next = NULL;
1137         req->sent = 0;
1138         req->complete = 0;
1139
1140         spin_lock_irqsave(&pmu_lock, flags);
1141         if (current_req != 0) {
1142                 last_req->next = req;
1143                 last_req = req;
1144         } else {
1145                 current_req = req;
1146                 last_req = req;
1147                 if (pmu_state == idle)
1148                         pmu_start();
1149         }
1150         spin_unlock_irqrestore(&pmu_lock, flags);
1151
1152         return 0;
1153 }
1154
1155 static inline void
1156 wait_for_ack(void)
1157 {
1158         /* Sightly increased the delay, I had one occurrence of the message
1159          * reported
1160          */
1161         int timeout = 4000;
1162         while ((in_8(&via[B]) & TACK) == 0) {
1163                 if (--timeout < 0) {
1164                         printk(KERN_ERR "PMU not responding (!ack)\n");
1165                         return;
1166                 }
1167                 udelay(10);
1168         }
1169 }
1170
1171 /* New PMU seems to be very sensitive to those timings, so we make sure
1172  * PCI is flushed immediately */
1173 static inline void
1174 send_byte(int x)
1175 {
1176         volatile unsigned char __iomem *v = via;
1177
1178         out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT);
1179         out_8(&v[SR], x);
1180         out_8(&v[B], in_8(&v[B]) & ~TREQ);              /* assert TREQ */
1181         (void)in_8(&v[B]);
1182 }
1183
1184 static inline void
1185 recv_byte(void)
1186 {
1187         volatile unsigned char __iomem *v = via;
1188
1189         out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT);
1190         in_8(&v[SR]);           /* resets SR */
1191         out_8(&v[B], in_8(&v[B]) & ~TREQ);
1192         (void)in_8(&v[B]);
1193 }
1194
1195 static inline void
1196 pmu_done(struct adb_request *req)
1197 {
1198         void (*done)(struct adb_request *) = req->done;
1199         mb();
1200         req->complete = 1;
1201         /* Here, we assume that if the request has a done member, the
1202          * struct request will survive to setting req->complete to 1
1203          */
1204         if (done)
1205                 (*done)(req);
1206 }
1207
1208 static void __pmac
1209 pmu_start(void)
1210 {
1211         struct adb_request *req;
1212
1213         /* assert pmu_state == idle */
1214         /* get the packet to send */
1215         req = current_req;
1216         if (req == 0 || pmu_state != idle
1217             || (/*req->reply_expected && */req_awaiting_reply))
1218                 return;
1219
1220         pmu_state = sending;
1221         data_index = 1;
1222         data_len = pmu_data_len[req->data[0]][0];
1223
1224         /* Sounds safer to make sure ACK is high before writing. This helped
1225          * kill a problem with ADB and some iBooks
1226          */
1227         wait_for_ack();
1228         /* set the shift register to shift out and send a byte */
1229         send_byte(req->data[0]);
1230 }
1231
1232 void __openfirmware
1233 pmu_poll(void)
1234 {
1235         if (!via)
1236                 return;
1237         if (disable_poll)
1238                 return;
1239         via_pmu_interrupt(0, NULL, NULL);
1240 }
1241
1242 void __openfirmware
1243 pmu_poll_adb(void)
1244 {
1245         if (!via)
1246                 return;
1247         if (disable_poll)
1248                 return;
1249         /* Kicks ADB read when PMU is suspended */
1250         adb_int_pending = 1;
1251         do {
1252                 via_pmu_interrupt(0, NULL, NULL);
1253         } while (pmu_suspended && (adb_int_pending || pmu_state != idle
1254                 || req_awaiting_reply));
1255 }
1256
1257 void __openfirmware
1258 pmu_wait_complete(struct adb_request *req)
1259 {
1260         if (!via)
1261                 return;
1262         while((pmu_state != idle && pmu_state != locked) || !req->complete)
1263                 via_pmu_interrupt(0, NULL, NULL);
1264 }
1265
1266 /* This function loops until the PMU is idle and prevents it from
1267  * anwsering to ADB interrupts. pmu_request can still be called.
1268  * This is done to avoid spurrious shutdowns when we know we'll have
1269  * interrupts switched off for a long time
1270  */
1271 void __openfirmware
1272 pmu_suspend(void)
1273 {
1274         unsigned long flags;
1275 #ifdef SUSPEND_USES_PMU
1276         struct adb_request *req;
1277 #endif
1278         if (!via)
1279                 return;
1280
1281         spin_lock_irqsave(&pmu_lock, flags);
1282         pmu_suspended++;
1283         if (pmu_suspended > 1) {
1284                 spin_unlock_irqrestore(&pmu_lock, flags);
1285                 return;
1286         }
1287
1288         do {
1289                 spin_unlock_irqrestore(&pmu_lock, flags);
1290                 if (req_awaiting_reply)
1291                         adb_int_pending = 1;
1292                 via_pmu_interrupt(0, NULL, NULL);
1293                 spin_lock_irqsave(&pmu_lock, flags);
1294                 if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
1295 #ifdef SUSPEND_USES_PMU
1296                         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
1297                         spin_unlock_irqrestore(&pmu_lock, flags);
1298                         while(!req.complete)
1299                                 pmu_poll();
1300 #else /* SUSPEND_USES_PMU */
1301                         if (gpio_irq >= 0)
1302                                 disable_irq_nosync(gpio_irq);
1303                         out_8(&via[IER], CB1_INT | IER_CLR);
1304                         spin_unlock_irqrestore(&pmu_lock, flags);
1305 #endif /* SUSPEND_USES_PMU */
1306                         break;
1307                 }
1308         } while (1);
1309 }
1310
1311 void __openfirmware
1312 pmu_resume(void)
1313 {
1314         unsigned long flags;
1315
1316         if (!via || (pmu_suspended < 1))
1317                 return;
1318
1319         spin_lock_irqsave(&pmu_lock, flags);
1320         pmu_suspended--;
1321         if (pmu_suspended > 0) {
1322                 spin_unlock_irqrestore(&pmu_lock, flags);
1323                 return;
1324         }
1325         adb_int_pending = 1;
1326 #ifdef SUSPEND_USES_PMU
1327         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
1328         spin_unlock_irqrestore(&pmu_lock, flags);
1329         while(!req.complete)
1330                 pmu_poll();
1331 #else /* SUSPEND_USES_PMU */
1332         if (gpio_irq >= 0)
1333                 enable_irq(gpio_irq);
1334         out_8(&via[IER], CB1_INT | IER_SET);
1335         spin_unlock_irqrestore(&pmu_lock, flags);
1336         pmu_poll();
1337 #endif /* SUSPEND_USES_PMU */
1338 }
1339
1340 /* Interrupt data could be the result data from an ADB cmd */
1341 static void __pmac
1342 pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
1343 {
1344         unsigned char ints, pirq;
1345         int i = 0;
1346
1347         asleep = 0;
1348         if (drop_interrupts || len < 1) {
1349                 adb_int_pending = 0;
1350                 pmu_irq_stats[8]++;
1351                 return;
1352         }
1353
1354         /* Get PMU interrupt mask */
1355         ints = data[0];
1356
1357         /* Record zero interrupts for stats */
1358         if (ints == 0)
1359                 pmu_irq_stats[9]++;
1360
1361         /* Hack to deal with ADB autopoll flag */
1362         if (ints & PMU_INT_ADB)
1363                 ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
1364
1365 next:
1366
1367         if (ints == 0) {
1368                 if (i > pmu_irq_stats[10])
1369                         pmu_irq_stats[10] = i;
1370                 return;
1371         }
1372
1373         for (pirq = 0; pirq < 8; pirq++)
1374                 if (ints & (1 << pirq))
1375                         break;
1376         pmu_irq_stats[pirq]++;
1377         i++;
1378         ints &= ~(1 << pirq);
1379
1380         /* Note: for some reason, we get an interrupt with len=1,
1381          * data[0]==0 after each normal ADB interrupt, at least
1382          * on the Pismo. Still investigating...  --BenH
1383          */
1384         if ((1 << pirq) & PMU_INT_ADB) {
1385                 if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
1386                         struct adb_request *req = req_awaiting_reply;
1387                         if (req == 0) {
1388                                 printk(KERN_ERR "PMU: extra ADB reply\n");
1389                                 return;
1390                         }
1391                         req_awaiting_reply = NULL;
1392                         if (len <= 2)
1393                                 req->reply_len = 0;
1394                         else {
1395                                 memcpy(req->reply, data + 1, len - 1);
1396                                 req->reply_len = len - 1;
1397                         }
1398                         pmu_done(req);
1399                 } else {
1400 #if defined(CONFIG_XMON) && !defined(CONFIG_PPC64)
1401                         if (len == 4 && data[1] == 0x2c) {
1402                                 extern int xmon_wants_key, xmon_adb_keycode;
1403                                 if (xmon_wants_key) {
1404                                         xmon_adb_keycode = data[2];
1405                                         return;
1406                                 }
1407                         }
1408 #endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */
1409 #ifdef CONFIG_ADB
1410                         /*
1411                          * XXX On the [23]400 the PMU gives us an up
1412                          * event for keycodes 0x74 or 0x75 when the PC
1413                          * card eject buttons are released, so we
1414                          * ignore those events.
1415                          */
1416                         if (!(pmu_kind == PMU_OHARE_BASED && len == 4
1417                               && data[1] == 0x2c && data[3] == 0xff
1418                               && (data[2] & ~1) == 0xf4))
1419                                 adb_input(data+1, len-1, regs, 1);
1420 #endif /* CONFIG_ADB */
1421                 }
1422         }
1423         /* Sound/brightness button pressed */
1424         else if ((1 << pirq) & PMU_INT_SNDBRT) {
1425 #ifdef CONFIG_PMAC_BACKLIGHT
1426                 if (len == 3)
1427 #ifdef CONFIG_INPUT_ADBHID
1428                         if (!disable_kernel_backlight)
1429 #endif /* CONFIG_INPUT_ADBHID */
1430                                 set_backlight_level(data[1] >> 4);
1431 #endif /* CONFIG_PMAC_BACKLIGHT */
1432         }
1433         /* Tick interrupt */
1434         else if ((1 << pirq) & PMU_INT_TICK) {
1435 #ifdef CONFIG_PMAC_PBOOK
1436                 /* Environement or tick interrupt, query batteries */
1437                 if (pmu_battery_count) {
1438                         if ((--query_batt_timer) == 0) {
1439                                 query_battery_state();
1440                                 query_batt_timer = BATTERY_POLLING_COUNT;
1441                         }
1442                 }
1443         }
1444         else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
1445                 if (pmu_battery_count)
1446                         query_battery_state();
1447                 pmu_pass_intr(data, len);
1448         } else {
1449                pmu_pass_intr(data, len);
1450 #endif /* CONFIG_PMAC_PBOOK */
1451         }
1452         goto next;
1453 }
1454
1455 static struct adb_request* __pmac
1456 pmu_sr_intr(struct pt_regs *regs)
1457 {
1458         struct adb_request *req;
1459         int bite = 0;
1460
1461         if (via[B] & TREQ) {
1462                 printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
1463                 out_8(&via[IFR], SR_INT);
1464                 return NULL;
1465         }
1466         /* The ack may not yet be low when we get the interrupt */
1467         while ((in_8(&via[B]) & TACK) != 0)
1468                         ;
1469
1470         /* if reading grab the byte, and reset the interrupt */
1471         if (pmu_state == reading || pmu_state == reading_intr)
1472                 bite = in_8(&via[SR]);
1473
1474         /* reset TREQ and wait for TACK to go high */
1475         out_8(&via[B], in_8(&via[B]) | TREQ);
1476         wait_for_ack();
1477
1478         switch (pmu_state) {
1479         case sending:
1480                 req = current_req;
1481                 if (data_len < 0) {
1482                         data_len = req->nbytes - 1;
1483                         send_byte(data_len);
1484                         break;
1485                 }
1486                 if (data_index <= data_len) {
1487                         send_byte(req->data[data_index++]);
1488                         break;
1489                 }
1490                 req->sent = 1;
1491                 data_len = pmu_data_len[req->data[0]][1];
1492                 if (data_len == 0) {
1493                         pmu_state = idle;
1494                         current_req = req->next;
1495                         if (req->reply_expected)
1496                                 req_awaiting_reply = req;
1497                         else
1498                                 return req;
1499                 } else {
1500                         pmu_state = reading;
1501                         data_index = 0;
1502                         reply_ptr = req->reply + req->reply_len;
1503                         recv_byte();
1504                 }
1505                 break;
1506
1507         case intack:
1508                 data_index = 0;
1509                 data_len = -1;
1510                 pmu_state = reading_intr;
1511                 reply_ptr = interrupt_data[int_data_last];
1512                 recv_byte();
1513                 if (gpio_irq >= 0 && !gpio_irq_enabled) {
1514                         enable_irq(gpio_irq);
1515                         gpio_irq_enabled = 1;
1516                 }
1517                 break;
1518
1519         case reading:
1520         case reading_intr:
1521                 if (data_len == -1) {
1522                         data_len = bite;
1523                         if (bite > 32)
1524                                 printk(KERN_ERR "PMU: bad reply len %d\n", bite);
1525                 } else if (data_index < 32) {
1526                         reply_ptr[data_index++] = bite;
1527                 }
1528                 if (data_index < data_len) {
1529                         recv_byte();
1530                         break;
1531                 }
1532
1533                 if (pmu_state == reading_intr) {
1534                         pmu_state = idle;
1535                         int_data_state[int_data_last] = int_data_ready;
1536                         interrupt_data_len[int_data_last] = data_len;
1537                 } else {
1538                         req = current_req;
1539                         /*
1540                          * For PMU sleep and freq change requests, we lock the
1541                          * PMU until it's explicitely unlocked. This avoids any
1542                          * spurrious event polling getting in
1543                          */
1544                         current_req = req->next;
1545                         req->reply_len += data_index;
1546                         if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED)
1547                                 pmu_state = locked;
1548                         else
1549                                 pmu_state = idle;
1550                         return req;
1551                 }
1552                 break;
1553
1554         default:
1555                 printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n",
1556                        pmu_state);
1557         }
1558         return NULL;
1559 }
1560
1561 static irqreturn_t __pmac
1562 via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs)
1563 {
1564         unsigned long flags;
1565         int intr;
1566         int nloop = 0;
1567         int int_data = -1;
1568         struct adb_request *req = NULL;
1569         int handled = 0;
1570
1571         /* This is a bit brutal, we can probably do better */
1572         spin_lock_irqsave(&pmu_lock, flags);
1573         ++disable_poll;
1574
1575         for (;;) {
1576                 intr = in_8(&via[IFR]) & (SR_INT | CB1_INT);
1577                 if (intr == 0)
1578                         break;
1579                 handled = 1;
1580                 if (++nloop > 1000) {
1581                         printk(KERN_DEBUG "PMU: stuck in intr loop, "
1582                                "intr=%x, ier=%x pmu_state=%d\n",
1583                                intr, in_8(&via[IER]), pmu_state);
1584                         break;
1585                 }
1586                 out_8(&via[IFR], intr);
1587                 if (intr & CB1_INT) {
1588                         adb_int_pending = 1;
1589                         pmu_irq_stats[0]++;
1590                 }
1591                 if (intr & SR_INT) {
1592                         req = pmu_sr_intr(regs);
1593                         if (req)
1594                                 break;
1595                 }
1596         }
1597
1598 recheck:
1599         if (pmu_state == idle) {
1600                 if (adb_int_pending) {
1601                         if (int_data_state[0] == int_data_empty)
1602                                 int_data_last = 0;
1603                         else if (int_data_state[1] == int_data_empty)
1604                                 int_data_last = 1;
1605                         else
1606                                 goto no_free_slot;
1607                         pmu_state = intack;
1608                         int_data_state[int_data_last] = int_data_fill;
1609                         /* Sounds safer to make sure ACK is high before writing.
1610                          * This helped kill a problem with ADB and some iBooks
1611                          */
1612                         wait_for_ack();
1613                         send_byte(PMU_INT_ACK);
1614                         adb_int_pending = 0;
1615                 } else if (current_req)
1616                         pmu_start();
1617         }
1618 no_free_slot:
1619         /* Mark the oldest buffer for flushing */
1620         if (int_data_state[!int_data_last] == int_data_ready) {
1621                 int_data_state[!int_data_last] = int_data_flush;
1622                 int_data = !int_data_last;
1623         } else if (int_data_state[int_data_last] == int_data_ready) {
1624                 int_data_state[int_data_last] = int_data_flush;
1625                 int_data = int_data_last;
1626         }
1627         --disable_poll;
1628         spin_unlock_irqrestore(&pmu_lock, flags);
1629
1630         /* Deal with completed PMU requests outside of the lock */
1631         if (req) {
1632                 pmu_done(req);
1633                 req = NULL;
1634         }
1635
1636         /* Deal with interrupt datas outside of the lock */
1637         if (int_data >= 0) {
1638                 pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data], regs);
1639                 spin_lock_irqsave(&pmu_lock, flags);
1640                 ++disable_poll;
1641                 int_data_state[int_data] = int_data_empty;
1642                 int_data = -1;
1643                 goto recheck;
1644         }
1645
1646         return IRQ_RETVAL(handled);
1647 }
1648
1649 void __pmac
1650 pmu_unlock(void)
1651 {
1652         unsigned long flags;
1653
1654         spin_lock_irqsave(&pmu_lock, flags);
1655         if (pmu_state == locked)
1656                 pmu_state = idle;
1657         adb_int_pending = 1;
1658         spin_unlock_irqrestore(&pmu_lock, flags);
1659 }
1660
1661
1662 static irqreturn_t __pmac
1663 gpio1_interrupt(int irq, void *arg, struct pt_regs *regs)
1664 {
1665         unsigned long flags;
1666
1667         if ((in_8(gpio_reg + 0x9) & 0x02) == 0) {
1668                 spin_lock_irqsave(&pmu_lock, flags);
1669                 if (gpio_irq_enabled > 0) {
1670                         disable_irq_nosync(gpio_irq);
1671                         gpio_irq_enabled = 0;
1672                 }
1673                 pmu_irq_stats[1]++;
1674                 adb_int_pending = 1;
1675                 spin_unlock_irqrestore(&pmu_lock, flags);
1676                 via_pmu_interrupt(0, NULL, NULL);
1677                 return IRQ_HANDLED;
1678         }
1679         return IRQ_NONE;
1680 }
1681
1682 #ifdef CONFIG_PMAC_BACKLIGHT
1683 static int backlight_to_bright[] __pmacdata = {
1684         0x7f, 0x46, 0x42, 0x3e, 0x3a, 0x36, 0x32, 0x2e,
1685         0x2a, 0x26, 0x22, 0x1e, 0x1a, 0x16, 0x12, 0x0e
1686 };
1687
1688 static int __openfirmware
1689 pmu_set_backlight_enable(int on, int level, void* data)
1690 {
1691         struct adb_request req;
1692
1693         if (vias == NULL)
1694                 return -ENODEV;
1695
1696         if (on) {
1697                 pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT,
1698                             backlight_to_bright[level]);
1699                 pmu_wait_complete(&req);
1700         }
1701         pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
1702                     PMU_POW_BACKLIGHT | (on ? PMU_POW_ON : PMU_POW_OFF));
1703         pmu_wait_complete(&req);
1704
1705         return 0;
1706 }
1707
1708 static void __openfirmware
1709 pmu_bright_complete(struct adb_request *req)
1710 {
1711         if (req == &bright_req_1)
1712                 clear_bit(1, &async_req_locks);
1713         if (req == &bright_req_2)
1714                 clear_bit(2, &async_req_locks);
1715 }
1716
1717 static int __openfirmware
1718 pmu_set_backlight_level(int level, void* data)
1719 {
1720         if (vias == NULL)
1721                 return -ENODEV;
1722
1723         if (test_and_set_bit(1, &async_req_locks))
1724                 return -EAGAIN;
1725         pmu_request(&bright_req_1, pmu_bright_complete, 2, PMU_BACKLIGHT_BRIGHT,
1726                 backlight_to_bright[level]);
1727         if (test_and_set_bit(2, &async_req_locks))
1728                 return -EAGAIN;
1729         pmu_request(&bright_req_2, pmu_bright_complete, 2, PMU_POWER_CTRL,
1730                     PMU_POW_BACKLIGHT | (level > BACKLIGHT_OFF ?
1731                                          PMU_POW_ON : PMU_POW_OFF));
1732
1733         return 0;
1734 }
1735 #endif /* CONFIG_PMAC_BACKLIGHT */
1736
1737 void __pmac
1738 pmu_enable_irled(int on)
1739 {
1740         struct adb_request req;
1741
1742         if (vias == NULL)
1743                 return ;
1744         if (pmu_kind == PMU_KEYLARGO_BASED)
1745                 return ;
1746
1747         pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
1748             (on ? PMU_POW_ON : PMU_POW_OFF));
1749         pmu_wait_complete(&req);
1750 }
1751
1752 void __pmac
1753 pmu_restart(void)
1754 {
1755         struct adb_request req;
1756
1757         if (via == NULL)
1758                 return;
1759
1760         local_irq_disable();
1761
1762         drop_interrupts = 1;
1763
1764         if (pmu_kind != PMU_KEYLARGO_BASED) {
1765                 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1766                                                 PMU_INT_TICK );
1767                 while(!req.complete)
1768                         pmu_poll();
1769         }
1770
1771         pmu_request(&req, NULL, 1, PMU_RESET);
1772         pmu_wait_complete(&req);
1773         for (;;)
1774                 ;
1775 }
1776
1777 void __pmac
1778 pmu_shutdown(void)
1779 {
1780         struct adb_request req;
1781
1782         if (via == NULL)
1783                 return;
1784
1785         local_irq_disable();
1786
1787         drop_interrupts = 1;
1788
1789         if (pmu_kind != PMU_KEYLARGO_BASED) {
1790                 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1791                                                 PMU_INT_TICK );
1792                 pmu_wait_complete(&req);
1793         } else {
1794                 /* Disable server mode on shutdown or we'll just
1795                  * wake up again
1796                  */
1797                 pmu_set_server_mode(0);
1798         }
1799
1800         pmu_request(&req, NULL, 5, PMU_SHUTDOWN,
1801                     'M', 'A', 'T', 'T');
1802         pmu_wait_complete(&req);
1803         for (;;)
1804                 ;
1805 }
1806
1807 int
1808 pmu_present(void)
1809 {
1810         return via != 0;
1811 }
1812
1813 struct pmu_i2c_hdr {
1814         u8      bus;
1815         u8      mode;
1816         u8      bus2;
1817         u8      address;
1818         u8      sub_addr;
1819         u8      comb_addr;
1820         u8      count;
1821 };
1822
1823 int
1824 pmu_i2c_combined_read(int bus, int addr, int subaddr,  u8* data, int len)
1825 {
1826         struct adb_request      req;
1827         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1828         int retry;
1829         int rc;
1830
1831         for (retry=0; retry<16; retry++) {
1832                 memset(&req, 0, sizeof(req));
1833
1834                 hdr->bus = bus;
1835                 hdr->address = addr & 0xfe;
1836                 hdr->mode = PMU_I2C_MODE_COMBINED;
1837                 hdr->bus2 = 0;
1838                 hdr->sub_addr = subaddr;
1839                 hdr->comb_addr = addr | 1;
1840                 hdr->count = len;
1841
1842                 req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
1843                 req.reply_expected = 0;
1844                 req.reply_len = 0;
1845                 req.data[0] = PMU_I2C_CMD;
1846                 req.reply[0] = 0xff;
1847                 rc = pmu_queue_request(&req);
1848                 if (rc)
1849                         return rc;
1850                 while(!req.complete)
1851                         pmu_poll();
1852                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1853                         break;
1854                 mdelay(15);
1855         }
1856         if (req.reply[0] != PMU_I2C_STATUS_OK)
1857                 return -1;
1858
1859         for (retry=0; retry<16; retry++) {
1860                 memset(&req, 0, sizeof(req));
1861
1862                 mdelay(15);
1863
1864                 hdr->bus = PMU_I2C_BUS_STATUS;
1865                 req.reply[0] = 0xff;
1866
1867                 req.nbytes = 2;
1868                 req.reply_expected = 0;
1869                 req.reply_len = 0;
1870                 req.data[0] = PMU_I2C_CMD;
1871                 rc = pmu_queue_request(&req);
1872                 if (rc)
1873                         return rc;
1874                 while(!req.complete)
1875                         pmu_poll();
1876                 if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
1877                         memcpy(data, &req.reply[1], req.reply_len - 1);
1878                         return req.reply_len - 1;
1879                 }
1880         }
1881         return -1;
1882 }
1883
1884 int
1885 pmu_i2c_stdsub_write(int bus, int addr, int subaddr,  u8* data, int len)
1886 {
1887         struct adb_request      req;
1888         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1889         int retry;
1890         int rc;
1891
1892         for (retry=0; retry<16; retry++) {
1893                 memset(&req, 0, sizeof(req));
1894
1895                 hdr->bus = bus;
1896                 hdr->address = addr & 0xfe;
1897                 hdr->mode = PMU_I2C_MODE_STDSUB;
1898                 hdr->bus2 = 0;
1899                 hdr->sub_addr = subaddr;
1900                 hdr->comb_addr = addr & 0xfe;
1901                 hdr->count = len;
1902
1903                 req.data[0] = PMU_I2C_CMD;
1904                 memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
1905                 req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
1906                 req.reply_expected = 0;
1907                 req.reply_len = 0;
1908                 req.reply[0] = 0xff;
1909                 rc = pmu_queue_request(&req);
1910                 if (rc)
1911                         return rc;
1912                 while(!req.complete)
1913                         pmu_poll();
1914                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1915                         break;
1916                 mdelay(15);
1917         }
1918         if (req.reply[0] != PMU_I2C_STATUS_OK)
1919                 return -1;
1920
1921         for (retry=0; retry<16; retry++) {
1922                 memset(&req, 0, sizeof(req));
1923
1924                 mdelay(15);
1925
1926                 hdr->bus = PMU_I2C_BUS_STATUS;
1927                 req.reply[0] = 0xff;
1928
1929                 req.nbytes = 2;
1930                 req.reply_expected = 0;
1931                 req.reply_len = 0;
1932                 req.data[0] = PMU_I2C_CMD;
1933                 rc = pmu_queue_request(&req);
1934                 if (rc)
1935                         return rc;
1936                 while(!req.complete)
1937                         pmu_poll();
1938                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1939                         return len;
1940         }
1941         return -1;
1942 }
1943
1944 int
1945 pmu_i2c_simple_read(int bus, int addr,  u8* data, int len)
1946 {
1947         struct adb_request      req;
1948         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1949         int retry;
1950         int rc;
1951
1952         for (retry=0; retry<16; retry++) {
1953                 memset(&req, 0, sizeof(req));
1954
1955                 hdr->bus = bus;
1956                 hdr->address = addr | 1;
1957                 hdr->mode = PMU_I2C_MODE_SIMPLE;
1958                 hdr->bus2 = 0;
1959                 hdr->sub_addr = 0;
1960                 hdr->comb_addr = 0;
1961                 hdr->count = len;
1962
1963                 req.data[0] = PMU_I2C_CMD;
1964                 req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
1965                 req.reply_expected = 0;
1966                 req.reply_len = 0;
1967                 req.reply[0] = 0xff;
1968                 rc = pmu_queue_request(&req);
1969                 if (rc)
1970                         return rc;
1971                 while(!req.complete)
1972                         pmu_poll();
1973                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1974                         break;
1975                 mdelay(15);
1976         }
1977         if (req.reply[0] != PMU_I2C_STATUS_OK)
1978                 return -1;
1979
1980         for (retry=0; retry<16; retry++) {
1981                 memset(&req, 0, sizeof(req));
1982
1983                 mdelay(15);
1984
1985                 hdr->bus = PMU_I2C_BUS_STATUS;
1986                 req.reply[0] = 0xff;
1987
1988                 req.nbytes = 2;
1989                 req.reply_expected = 0;
1990                 req.reply_len = 0;
1991                 req.data[0] = PMU_I2C_CMD;
1992                 rc = pmu_queue_request(&req);
1993                 if (rc)
1994                         return rc;
1995                 while(!req.complete)
1996                         pmu_poll();
1997                 if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
1998                         memcpy(data, &req.reply[1], req.reply_len - 1);
1999                         return req.reply_len - 1;
2000                 }
2001         }
2002         return -1;
2003 }
2004
2005 int
2006 pmu_i2c_simple_write(int bus, int addr,  u8* data, int len)
2007 {
2008         struct adb_request      req;
2009         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
2010         int retry;
2011         int rc;
2012
2013         for (retry=0; retry<16; retry++) {
2014                 memset(&req, 0, sizeof(req));
2015
2016                 hdr->bus = bus;
2017                 hdr->address = addr & 0xfe;
2018                 hdr->mode = PMU_I2C_MODE_SIMPLE;
2019                 hdr->bus2 = 0;
2020                 hdr->sub_addr = 0;
2021                 hdr->comb_addr = 0;
2022                 hdr->count = len;
2023
2024                 req.data[0] = PMU_I2C_CMD;
2025                 memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
2026                 req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
2027                 req.reply_expected = 0;
2028                 req.reply_len = 0;
2029                 req.reply[0] = 0xff;
2030                 rc = pmu_queue_request(&req);
2031                 if (rc)
2032                         return rc;
2033                 while(!req.complete)
2034                         pmu_poll();
2035                 if (req.reply[0] == PMU_I2C_STATUS_OK)
2036                         break;
2037                 mdelay(15);
2038         }
2039         if (req.reply[0] != PMU_I2C_STATUS_OK)
2040                 return -1;
2041
2042         for (retry=0; retry<16; retry++) {
2043                 memset(&req, 0, sizeof(req));
2044
2045                 mdelay(15);
2046
2047                 hdr->bus = PMU_I2C_BUS_STATUS;
2048                 req.reply[0] = 0xff;
2049
2050                 req.nbytes = 2;
2051                 req.reply_expected = 0;
2052                 req.reply_len = 0;
2053                 req.data[0] = PMU_I2C_CMD;
2054                 rc = pmu_queue_request(&req);
2055                 if (rc)
2056                         return rc;
2057                 while(!req.complete)
2058                         pmu_poll();
2059                 if (req.reply[0] == PMU_I2C_STATUS_OK)
2060                         return len;
2061         }
2062         return -1;
2063 }
2064
2065 #ifdef CONFIG_PMAC_PBOOK
2066
2067 static LIST_HEAD(sleep_notifiers);
2068
2069 int
2070 pmu_register_sleep_notifier(struct pmu_sleep_notifier *n)
2071 {
2072         struct list_head *list;
2073         struct pmu_sleep_notifier *notifier;
2074
2075         for (list = sleep_notifiers.next; list != &sleep_notifiers;
2076              list = list->next) {
2077                 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2078                 if (n->priority > notifier->priority)
2079                         break;
2080         }
2081         __list_add(&n->list, list->prev, list);
2082         return 0;
2083 }
2084
2085 int
2086 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n)
2087 {
2088         if (n->list.next == 0)
2089                 return -ENOENT;
2090         list_del(&n->list);
2091         n->list.next = NULL;
2092         return 0;
2093 }
2094
2095 /* Sleep is broadcast last-to-first */
2096 static int __pmac
2097 broadcast_sleep(int when, int fallback)
2098 {
2099         int ret = PBOOK_SLEEP_OK;
2100         struct list_head *list;
2101         struct pmu_sleep_notifier *notifier;
2102
2103         for (list = sleep_notifiers.prev; list != &sleep_notifiers;
2104              list = list->prev) {
2105                 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2106                 ret = notifier->notifier_call(notifier, when);
2107                 if (ret != PBOOK_SLEEP_OK) {
2108                         printk(KERN_DEBUG "sleep %d rejected by %p (%p)\n",
2109                                when, notifier, notifier->notifier_call);
2110                         for (; list != &sleep_notifiers; list = list->next) {
2111                                 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2112                                 notifier->notifier_call(notifier, fallback);
2113                         }
2114                         return ret;
2115                 }
2116         }
2117         return ret;
2118 }
2119
2120 /* Wake is broadcast first-to-last */
2121 static int __pmac
2122 broadcast_wake(void)
2123 {
2124         int ret = PBOOK_SLEEP_OK;
2125         struct list_head *list;
2126         struct pmu_sleep_notifier *notifier;
2127
2128         for (list = sleep_notifiers.next; list != &sleep_notifiers;
2129              list = list->next) {
2130                 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2131                 notifier->notifier_call(notifier, PBOOK_WAKE);
2132         }
2133         return ret;
2134 }
2135
2136 /*
2137  * This struct is used to store config register values for
2138  * PCI devices which may get powered off when we sleep.
2139  */
2140 static struct pci_save {
2141 #ifndef HACKED_PCI_SAVE
2142         u16     command;
2143         u16     cache_lat;
2144         u16     intr;
2145         u32     rom_address;
2146 #else
2147         u32     config[16];
2148 #endif
2149 } *pbook_pci_saves;
2150 static int pbook_npci_saves;
2151
2152 static void __pmac
2153 pbook_alloc_pci_save(void)
2154 {
2155         int npci;
2156         struct pci_dev *pd = NULL;
2157
2158         npci = 0;
2159         while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
2160                 ++npci;
2161         }
2162         if (npci == 0)
2163                 return;
2164         pbook_pci_saves = (struct pci_save *)
2165                 kmalloc(npci * sizeof(struct pci_save), GFP_KERNEL);
2166         pbook_npci_saves = npci;
2167 }
2168
2169 static void __pmac
2170 pbook_free_pci_save(void)
2171 {
2172         if (pbook_pci_saves == NULL)
2173                 return;
2174         kfree(pbook_pci_saves);
2175         pbook_pci_saves = NULL;
2176         pbook_npci_saves = 0;
2177 }
2178
2179 static void __pmac
2180 pbook_pci_save(void)
2181 {
2182         struct pci_save *ps = pbook_pci_saves;
2183         struct pci_dev *pd = NULL;
2184         int npci = pbook_npci_saves;
2185
2186         if (ps == NULL)
2187                 return;
2188
2189         while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
2190                 if (npci-- == 0)
2191                         return;
2192 #ifndef HACKED_PCI_SAVE
2193                 pci_read_config_word(pd, PCI_COMMAND, &ps->command);
2194                 pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat);
2195                 pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr);
2196                 pci_read_config_dword(pd, PCI_ROM_ADDRESS, &ps->rom_address);
2197 #else
2198                 int i;
2199                 for (i=1;i<16;i++)
2200                         pci_read_config_dword(pd, i<<4, &ps->config[i]);
2201 #endif
2202                 ++ps;
2203         }
2204 }
2205
2206 /* For this to work, we must take care of a few things: If gmac was enabled
2207  * during boot, it will be in the pci dev list. If it's disabled at this point
2208  * (and it will probably be), then you can't access it's config space.
2209  */
2210 static void __pmac
2211 pbook_pci_restore(void)
2212 {
2213         u16 cmd;
2214         struct pci_save *ps = pbook_pci_saves - 1;
2215         struct pci_dev *pd = NULL;
2216         int npci = pbook_npci_saves;
2217         int j;
2218
2219         while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
2220 #ifdef HACKED_PCI_SAVE
2221                 int i;
2222                 if (npci-- == 0)
2223                         return;
2224                 ps++;
2225                 for (i=2;i<16;i++)
2226                         pci_write_config_dword(pd, i<<4, ps->config[i]);
2227                 pci_write_config_dword(pd, 4, ps->config[1]);
2228 #else
2229                 if (npci-- == 0)
2230                         return;
2231                 ps++;
2232                 if (ps->command == 0)
2233                         continue;
2234                 pci_read_config_word(pd, PCI_COMMAND, &cmd);
2235                 if ((ps->command & ~cmd) == 0)
2236                         continue;
2237                 switch (pd->hdr_type) {
2238                 case PCI_HEADER_TYPE_NORMAL:
2239                         for (j = 0; j < 6; ++j)
2240                                 pci_write_config_dword(pd,
2241                                         PCI_BASE_ADDRESS_0 + j*4,
2242                                         pd->resource[j].start);
2243                         pci_write_config_dword(pd, PCI_ROM_ADDRESS,
2244                                 ps->rom_address);
2245                         pci_write_config_word(pd, PCI_CACHE_LINE_SIZE,
2246                                 ps->cache_lat);
2247                         pci_write_config_word(pd, PCI_INTERRUPT_LINE,
2248                                 ps->intr);
2249                         pci_write_config_word(pd, PCI_COMMAND, ps->command);
2250                         break;
2251                 }
2252 #endif
2253         }
2254 }
2255
2256 #ifdef DEBUG_SLEEP
2257 /* N.B. This doesn't work on the 3400 */
2258 void  __pmac
2259 pmu_blink(int n)
2260 {
2261         struct adb_request req;
2262
2263         memset(&req, 0, sizeof(req));
2264
2265         for (; n > 0; --n) {
2266                 req.nbytes = 4;
2267                 req.done = NULL;
2268                 req.data[0] = 0xee;
2269                 req.data[1] = 4;
2270                 req.data[2] = 0;
2271                 req.data[3] = 1;
2272                 req.reply[0] = ADB_RET_OK;
2273                 req.reply_len = 1;
2274                 req.reply_expected = 0;
2275                 pmu_polled_request(&req);
2276                 mdelay(50);
2277                 req.nbytes = 4;
2278                 req.done = NULL;
2279                 req.data[0] = 0xee;
2280                 req.data[1] = 4;
2281                 req.data[2] = 0;
2282                 req.data[3] = 0;
2283                 req.reply[0] = ADB_RET_OK;
2284                 req.reply_len = 1;
2285                 req.reply_expected = 0;
2286                 pmu_polled_request(&req);
2287                 mdelay(50);
2288         }
2289         mdelay(50);
2290 }
2291 #endif
2292
2293 /*
2294  * Put the powerbook to sleep.
2295  */
2296
2297 static u32 save_via[8] __pmacdata;
2298
2299 static void __pmac
2300 save_via_state(void)
2301 {
2302         save_via[0] = in_8(&via[ANH]);
2303         save_via[1] = in_8(&via[DIRA]);
2304         save_via[2] = in_8(&via[B]);
2305         save_via[3] = in_8(&via[DIRB]);
2306         save_via[4] = in_8(&via[PCR]);
2307         save_via[5] = in_8(&via[ACR]);
2308         save_via[6] = in_8(&via[T1CL]);
2309         save_via[7] = in_8(&via[T1CH]);
2310 }
2311 static void __pmac
2312 restore_via_state(void)
2313 {
2314         out_8(&via[ANH], save_via[0]);
2315         out_8(&via[DIRA], save_via[1]);
2316         out_8(&via[B], save_via[2]);
2317         out_8(&via[DIRB], save_via[3]);
2318         out_8(&via[PCR], save_via[4]);
2319         out_8(&via[ACR], save_via[5]);
2320         out_8(&via[T1CL], save_via[6]);
2321         out_8(&via[T1CH], save_via[7]);
2322         out_8(&via[IER], IER_CLR | 0x7f);       /* disable all intrs */
2323         out_8(&via[IFR], 0x7f);                         /* clear IFR */
2324         out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
2325 }
2326
2327 static int __pmac
2328 pmac_suspend_devices(void)
2329 {
2330         int ret;
2331
2332         pm_prepare_console();
2333
2334         /* Notify old-style device drivers & userland */
2335         ret = broadcast_sleep(PBOOK_SLEEP_REQUEST, PBOOK_SLEEP_REJECT);
2336         if (ret != PBOOK_SLEEP_OK) {
2337                 printk(KERN_ERR "Sleep rejected by drivers\n");
2338                 return -EBUSY;
2339         }
2340
2341         /* Sync the disks. */
2342         /* XXX It would be nice to have some way to ensure that
2343          * nobody is dirtying any new buffers while we wait. That
2344          * could be achieved using the refrigerator for processes
2345          * that swsusp uses
2346          */
2347         sys_sync();
2348
2349         /* Sleep can fail now. May not be very robust but useful for debugging */
2350         ret = broadcast_sleep(PBOOK_SLEEP_NOW, PBOOK_WAKE);
2351         if (ret != PBOOK_SLEEP_OK) {
2352                 printk(KERN_ERR "Driver sleep failed\n");
2353                 return -EBUSY;
2354         }
2355
2356         /* Send suspend call to devices, hold the device core's dpm_sem */
2357         ret = device_suspend(PMSG_SUSPEND);
2358         if (ret) {
2359                 broadcast_wake();
2360                 printk(KERN_ERR "Driver sleep failed\n");
2361                 return -EBUSY;
2362         }
2363
2364         /* Disable clock spreading on some machines */
2365         pmac_tweak_clock_spreading(0);
2366
2367         /* Stop preemption */
2368         preempt_disable();
2369
2370         /* Make sure the decrementer won't interrupt us */
2371         asm volatile("mtdec %0" : : "r" (0x7fffffff));
2372         /* Make sure any pending DEC interrupt occurring while we did
2373          * the above didn't re-enable the DEC */
2374         mb();
2375         asm volatile("mtdec %0" : : "r" (0x7fffffff));
2376
2377         /* We can now disable MSR_EE. This code of course works properly only
2378          * on UP machines... For SMP, if we ever implement sleep, we'll have to
2379          * stop the "other" CPUs way before we do all that stuff.
2380          */
2381         local_irq_disable();
2382
2383         /* Broadcast power down irq
2384          * This isn't that useful in most cases (only directly wired devices can
2385          * use this but still... This will take care of sysdev's as well, so
2386          * we exit from here with local irqs disabled and PIC off.
2387          */
2388         ret = device_power_down(PMSG_SUSPEND);
2389         if (ret) {
2390                 wakeup_decrementer();
2391                 local_irq_enable();
2392                 preempt_enable();
2393                 device_resume();
2394                 broadcast_wake();
2395                 printk(KERN_ERR "Driver powerdown failed\n");
2396                 return -EBUSY;
2397         }
2398
2399         /* Wait for completion of async backlight requests */
2400         while (!bright_req_1.complete || !bright_req_2.complete ||
2401                         !batt_req.complete)
2402                 pmu_poll();
2403
2404         /* Giveup the lazy FPU & vec so we don't have to back them
2405          * up from the low level code
2406          */
2407         enable_kernel_fp();
2408
2409 #ifdef CONFIG_ALTIVEC
2410         if (cpu_has_feature(CPU_FTR_ALTIVEC))
2411                 enable_kernel_altivec();
2412 #endif /* CONFIG_ALTIVEC */
2413
2414         return 0;
2415 }
2416
2417 static int __pmac
2418 pmac_wakeup_devices(void)
2419 {
2420         mdelay(100);
2421
2422         /* Power back up system devices (including the PIC) */
2423         device_power_up();
2424
2425         /* Force a poll of ADB interrupts */
2426         adb_int_pending = 1;
2427         via_pmu_interrupt(0, NULL, NULL);
2428
2429         /* Restart jiffies & scheduling */
2430         wakeup_decrementer();
2431
2432         /* Re-enable local CPU interrupts */
2433         local_irq_enable();
2434         mdelay(10);
2435         preempt_enable();
2436
2437         /* Re-enable clock spreading on some machines */
2438         pmac_tweak_clock_spreading(1);
2439
2440         /* Resume devices */
2441         device_resume();
2442
2443         /* Notify old style drivers */
2444         broadcast_wake();
2445
2446         pm_restore_console();
2447
2448         return 0;
2449 }
2450
2451 #define GRACKLE_PM      (1<<7)
2452 #define GRACKLE_DOZE    (1<<5)
2453 #define GRACKLE_NAP     (1<<4)
2454 #define GRACKLE_SLEEP   (1<<3)
2455
2456 int __pmac
2457 powerbook_sleep_grackle(void)
2458 {
2459         unsigned long save_l2cr;
2460         unsigned short pmcr1;
2461         struct adb_request req;
2462         int ret;
2463         struct pci_dev *grackle;
2464
2465         grackle = pci_find_slot(0, 0);
2466         if (!grackle)
2467                 return -ENODEV;
2468
2469         ret = pmac_suspend_devices();
2470         if (ret) {
2471                 printk(KERN_ERR "Sleep rejected by devices\n");
2472                 return ret;
2473         }
2474
2475         /* Turn off various things. Darwin does some retry tests here... */
2476         pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE);
2477         pmu_wait_complete(&req);
2478         pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
2479                 PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY);
2480         pmu_wait_complete(&req);
2481
2482         /* For 750, save backside cache setting and disable it */
2483         save_l2cr = _get_L2CR();        /* (returns -1 if not available) */
2484
2485         if (!__fake_sleep) {
2486                 /* Ask the PMU to put us to sleep */
2487                 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
2488                 pmu_wait_complete(&req);
2489         }
2490
2491         /* The VIA is supposed not to be restored correctly*/
2492         save_via_state();
2493         /* We shut down some HW */
2494         pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
2495
2496         pci_read_config_word(grackle, 0x70, &pmcr1);
2497         /* Apparently, MacOS uses NAP mode for Grackle ??? */
2498         pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP);
2499         pmcr1 |= GRACKLE_PM|GRACKLE_NAP;
2500         pci_write_config_word(grackle, 0x70, pmcr1);
2501
2502         /* Call low-level ASM sleep handler */
2503         if (__fake_sleep)
2504                 mdelay(5000);
2505         else
2506                 low_sleep_handler();
2507
2508         /* We're awake again, stop grackle PM */
2509         pci_read_config_word(grackle, 0x70, &pmcr1);
2510         pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP);
2511         pci_write_config_word(grackle, 0x70, pmcr1);
2512
2513         /* Make sure the PMU is idle */
2514         pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
2515         restore_via_state();
2516
2517         /* Restore L2 cache */
2518         if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
2519                 _set_L2CR(save_l2cr);
2520
2521         /* Restore userland MMU context */
2522         set_context(current->active_mm->context, current->active_mm->pgd);
2523
2524         /* Power things up */
2525         pmu_unlock();
2526         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
2527         pmu_wait_complete(&req);
2528         pmu_request(&req, NULL, 2, PMU_POWER_CTRL0,
2529                         PMU_POW0_ON|PMU_POW0_HARD_DRIVE);
2530         pmu_wait_complete(&req);
2531         pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
2532                         PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY);
2533         pmu_wait_complete(&req);
2534
2535         pmac_wakeup_devices();
2536
2537         return 0;
2538 }
2539
2540 static int __pmac
2541 powerbook_sleep_Core99(void)
2542 {
2543         unsigned long save_l2cr;
2544         unsigned long save_l3cr;
2545         struct adb_request req;
2546         int ret;
2547
2548         if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) {
2549                 printk(KERN_ERR "Sleep mode not supported on this machine\n");
2550                 return -ENOSYS;
2551         }
2552
2553         if (num_online_cpus() > 1 || cpu_is_offline(0))
2554                 return -EAGAIN;
2555
2556         ret = pmac_suspend_devices();
2557         if (ret) {
2558                 printk(KERN_ERR "Sleep rejected by devices\n");
2559                 return ret;
2560         }
2561
2562         /* Stop environment and ADB interrupts */
2563         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
2564         pmu_wait_complete(&req);
2565
2566         /* Tell PMU what events will wake us up */
2567         pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS,
2568                 0xff, 0xff);
2569         pmu_wait_complete(&req);
2570         pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS,
2571                 0, PMU_PWR_WAKEUP_KEY |
2572                 (option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0));
2573         pmu_wait_complete(&req);
2574
2575         /* Save the state of the L2 and L3 caches */
2576         save_l3cr = _get_L3CR();        /* (returns -1 if not available) */
2577         save_l2cr = _get_L2CR();        /* (returns -1 if not available) */
2578
2579         if (!__fake_sleep) {
2580                 /* Ask the PMU to put us to sleep */
2581                 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
2582                 pmu_wait_complete(&req);
2583         }
2584
2585         /* The VIA is supposed not to be restored correctly*/
2586         save_via_state();
2587
2588         /* Shut down various ASICs. There's a chance that we can no longer
2589          * talk to the PMU after this, so I moved it to _after_ sending the
2590          * sleep command to it. Still need to be checked.
2591          */
2592         pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
2593
2594         /* Call low-level ASM sleep handler */
2595         if (__fake_sleep)
2596                 mdelay(5000);
2597         else
2598                 low_sleep_handler();
2599
2600         /* Restore Apple core ASICs state */
2601         pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
2602
2603         /* Restore VIA */
2604         restore_via_state();
2605
2606         /* tweak LPJ before cpufreq is there */
2607         loops_per_jiffy *= 2;
2608
2609         /* Restore video */
2610         pmac_call_early_video_resume();
2611
2612         /* Restore L2 cache */
2613         if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
2614                 _set_L2CR(save_l2cr);
2615         /* Restore L3 cache */
2616         if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0)
2617                 _set_L3CR(save_l3cr);
2618
2619         /* Restore userland MMU context */
2620         set_context(current->active_mm->context, current->active_mm->pgd);
2621
2622         /* Tell PMU we are ready */
2623         pmu_unlock();
2624         pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
2625         pmu_wait_complete(&req);
2626         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
2627         pmu_wait_complete(&req);
2628
2629         /* Restore LPJ, cpufreq will adjust the cpu frequency */
2630         loops_per_jiffy /= 2;
2631
2632         pmac_wakeup_devices();
2633
2634         return 0;
2635 }
2636
2637 #define PB3400_MEM_CTRL         0xf8000000
2638 #define PB3400_MEM_CTRL_SLEEP   0x70
2639
2640 static int __pmac
2641 powerbook_sleep_3400(void)
2642 {
2643         int ret, i, x;
2644         unsigned int hid0;
2645         unsigned long p;
2646         struct adb_request sleep_req;
2647         void __iomem *mem_ctrl;
2648         unsigned int __iomem *mem_ctrl_sleep;
2649
2650         /* first map in the memory controller registers */
2651         mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
2652         if (mem_ctrl == NULL) {
2653                 printk("powerbook_sleep_3400: ioremap failed\n");
2654                 return -ENOMEM;
2655         }
2656         mem_ctrl_sleep = mem_ctrl + PB3400_MEM_CTRL_SLEEP;
2657
2658         /* Allocate room for PCI save */
2659         pbook_alloc_pci_save();
2660
2661         ret = pmac_suspend_devices();
2662         if (ret) {
2663                 pbook_free_pci_save();
2664                 printk(KERN_ERR "Sleep rejected by devices\n");
2665                 return ret;
2666         }
2667
2668         /* Save the state of PCI config space for some slots */
2669         pbook_pci_save();
2670
2671         /* Set the memory controller to keep the memory refreshed
2672            while we're asleep */
2673         for (i = 0x403f; i >= 0x4000; --i) {
2674                 out_be32(mem_ctrl_sleep, i);
2675                 do {
2676                         x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff;
2677                 } while (x == 0);
2678                 if (x >= 0x100)
2679                         break;
2680         }
2681
2682         /* Ask the PMU to put us to sleep */
2683         pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
2684         while (!sleep_req.complete)
2685                 mb();
2686
2687         pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
2688
2689         /* displacement-flush the L2 cache - necessary? */
2690         for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000)
2691                 i = *(volatile int *)p;
2692         asleep = 1;
2693
2694         /* Put the CPU into sleep mode */
2695         asm volatile("mfspr %0,1008" : "=r" (hid0) :);
2696         hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
2697         asm volatile("mtspr 1008,%0" : : "r" (hid0));
2698         _nmask_and_or_msr(0, MSR_POW | MSR_EE);
2699         udelay(10);
2700
2701         /* OK, we're awake again, start restoring things */
2702         out_be32(mem_ctrl_sleep, 0x3f);
2703         pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
2704         pbook_pci_restore();
2705         pmu_unlock();
2706
2707         /* wait for the PMU interrupt sequence to complete */
2708         while (asleep)
2709                 mb();
2710
2711         pmac_wakeup_devices();
2712         pbook_free_pci_save();
2713         iounmap(mem_ctrl);
2714
2715         return 0;
2716 }
2717
2718 /*
2719  * Support for /dev/pmu device
2720  */
2721 #define RB_SIZE         0x10
2722 struct pmu_private {
2723         struct list_head list;
2724         int     rb_get;
2725         int     rb_put;
2726         struct rb_entry {
2727                 unsigned short len;
2728                 unsigned char data[16];
2729         }       rb_buf[RB_SIZE];
2730         wait_queue_head_t wait;
2731         spinlock_t lock;
2732 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2733         int     backlight_locker;
2734 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2735 };
2736
2737 static LIST_HEAD(all_pmu_pvt);
2738 static DEFINE_SPINLOCK(all_pvt_lock __pmacdata);
2739
2740 static void __pmac
2741 pmu_pass_intr(unsigned char *data, int len)
2742 {
2743         struct pmu_private *pp;
2744         struct list_head *list;
2745         int i;
2746         unsigned long flags;
2747
2748         if (len > sizeof(pp->rb_buf[0].data))
2749                 len = sizeof(pp->rb_buf[0].data);
2750         spin_lock_irqsave(&all_pvt_lock, flags);
2751         for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) {
2752                 pp = list_entry(list, struct pmu_private, list);
2753                 spin_lock(&pp->lock);
2754                 i = pp->rb_put + 1;
2755                 if (i >= RB_SIZE)
2756                         i = 0;
2757                 if (i != pp->rb_get) {
2758                         struct rb_entry *rp = &pp->rb_buf[pp->rb_put];
2759                         rp->len = len;
2760                         memcpy(rp->data, data, len);
2761                         pp->rb_put = i;
2762                         wake_up_interruptible(&pp->wait);
2763                 }
2764                 spin_unlock(&pp->lock);
2765         }
2766         spin_unlock_irqrestore(&all_pvt_lock, flags);
2767 }
2768
2769 static int __pmac
2770 pmu_open(struct inode *inode, struct file *file)
2771 {
2772         struct pmu_private *pp;
2773         unsigned long flags;
2774
2775         pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
2776         if (pp == 0)
2777                 return -ENOMEM;
2778         pp->rb_get = pp->rb_put = 0;
2779         spin_lock_init(&pp->lock);
2780         init_waitqueue_head(&pp->wait);
2781         spin_lock_irqsave(&all_pvt_lock, flags);
2782 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2783         pp->backlight_locker = 0;
2784 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2785         list_add(&pp->list, &all_pmu_pvt);
2786         spin_unlock_irqrestore(&all_pvt_lock, flags);
2787         file->private_data = pp;
2788         return 0;
2789 }
2790
2791 static ssize_t  __pmac
2792 pmu_read(struct file *file, char __user *buf,
2793                         size_t count, loff_t *ppos)
2794 {
2795         struct pmu_private *pp = file->private_data;
2796         DECLARE_WAITQUEUE(wait, current);
2797         unsigned long flags;
2798         int ret = 0;
2799
2800         if (count < 1 || pp == 0)
2801                 return -EINVAL;
2802         if (!access_ok(VERIFY_WRITE, buf, count))
2803                 return -EFAULT;
2804
2805         spin_lock_irqsave(&pp->lock, flags);
2806         add_wait_queue(&pp->wait, &wait);
2807         current->state = TASK_INTERRUPTIBLE;
2808
2809         for (;;) {
2810                 ret = -EAGAIN;
2811                 if (pp->rb_get != pp->rb_put) {
2812                         int i = pp->rb_get;
2813                         struct rb_entry *rp = &pp->rb_buf[i];
2814                         ret = rp->len;
2815                         spin_unlock_irqrestore(&pp->lock, flags);
2816                         if (ret > count)
2817                                 ret = count;
2818                         if (ret > 0 && copy_to_user(buf, rp->data, ret))
2819                                 ret = -EFAULT;
2820                         if (++i >= RB_SIZE)
2821                                 i = 0;
2822                         spin_lock_irqsave(&pp->lock, flags);
2823                         pp->rb_get = i;
2824                 }
2825                 if (ret >= 0)
2826                         break;
2827                 if (file->f_flags & O_NONBLOCK)
2828                         break;
2829                 ret = -ERESTARTSYS;
2830                 if (signal_pending(current))
2831                         break;
2832                 spin_unlock_irqrestore(&pp->lock, flags);
2833                 schedule();
2834                 spin_lock_irqsave(&pp->lock, flags);
2835         }
2836         current->state = TASK_RUNNING;
2837         remove_wait_queue(&pp->wait, &wait);
2838         spin_unlock_irqrestore(&pp->lock, flags);
2839
2840         return ret;
2841 }
2842
2843 static ssize_t __pmac
2844 pmu_write(struct file *file, const char __user *buf,
2845                          size_t count, loff_t *ppos)
2846 {
2847         return 0;
2848 }
2849
2850 static unsigned int __pmac
2851 pmu_fpoll(struct file *filp, poll_table *wait)
2852 {
2853         struct pmu_private *pp = filp->private_data;
2854         unsigned int mask = 0;
2855         unsigned long flags;
2856
2857         if (pp == 0)
2858                 return 0;
2859         poll_wait(filp, &pp->wait, wait);
2860         spin_lock_irqsave(&pp->lock, flags);
2861         if (pp->rb_get != pp->rb_put)
2862                 mask |= POLLIN;
2863         spin_unlock_irqrestore(&pp->lock, flags);
2864         return mask;
2865 }
2866
2867 static int __pmac
2868 pmu_release(struct inode *inode, struct file *file)
2869 {
2870         struct pmu_private *pp = file->private_data;
2871         unsigned long flags;
2872
2873         lock_kernel();
2874         if (pp != 0) {
2875                 file->private_data = NULL;
2876                 spin_lock_irqsave(&all_pvt_lock, flags);
2877                 list_del(&pp->list);
2878                 spin_unlock_irqrestore(&all_pvt_lock, flags);
2879 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2880                 if (pp->backlight_locker) {
2881                         spin_lock_irqsave(&pmu_lock, flags);
2882                         disable_kernel_backlight--;
2883                         spin_unlock_irqrestore(&pmu_lock, flags);
2884                 }
2885 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2886                 kfree(pp);
2887         }
2888         unlock_kernel();
2889         return 0;
2890 }
2891
2892 /* Note: removed __openfirmware here since it causes link errors */
2893 static int __pmac
2894 pmu_ioctl(struct inode * inode, struct file *filp,
2895                      u_int cmd, u_long arg)
2896 {
2897         struct pmu_private *pp = filp->private_data;
2898         __u32 __user *argp = (__u32 __user *)arg;
2899         int error;
2900
2901         switch (cmd) {
2902         case PMU_IOC_SLEEP:
2903                 if (!capable(CAP_SYS_ADMIN))
2904                         return -EACCES;
2905                 if (sleep_in_progress)
2906                         return -EBUSY;
2907                 sleep_in_progress = 1;
2908                 switch (pmu_kind) {
2909                 case PMU_OHARE_BASED:
2910                         error = powerbook_sleep_3400();
2911                         break;
2912                 case PMU_HEATHROW_BASED:
2913                 case PMU_PADDINGTON_BASED:
2914                         error = powerbook_sleep_grackle();
2915                         break;
2916                 case PMU_KEYLARGO_BASED:
2917                         error = powerbook_sleep_Core99();
2918                         break;
2919                 default:
2920                         error = -ENOSYS;
2921                 }
2922                 sleep_in_progress = 0;
2923                 return error;
2924         case PMU_IOC_CAN_SLEEP:
2925                 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0)
2926                         return put_user(0, argp);
2927                 else
2928                         return put_user(1, argp);
2929
2930 #ifdef CONFIG_PMAC_BACKLIGHT
2931         /* Backlight should have its own device or go via
2932          * the fbdev
2933          */
2934         case PMU_IOC_GET_BACKLIGHT:
2935                 if (sleep_in_progress)
2936                         return -EBUSY;
2937                 error = get_backlight_level();
2938                 if (error < 0)
2939                         return error;
2940                 return put_user(error, argp);
2941         case PMU_IOC_SET_BACKLIGHT:
2942         {
2943                 __u32 value;
2944                 if (sleep_in_progress)
2945                         return -EBUSY;
2946                 error = get_user(value, argp);
2947                 if (!error)
2948                         error = set_backlight_level(value);
2949                 return error;
2950         }
2951 #ifdef CONFIG_INPUT_ADBHID
2952         case PMU_IOC_GRAB_BACKLIGHT: {
2953                 unsigned long flags;
2954                 if (pp->backlight_locker)
2955                         return 0;
2956                 pp->backlight_locker = 1;
2957                 spin_lock_irqsave(&pmu_lock, flags);
2958                 disable_kernel_backlight++;
2959                 spin_unlock_irqrestore(&pmu_lock, flags);
2960                 return 0;
2961         }
2962 #endif /* CONFIG_INPUT_ADBHID */
2963 #endif /* CONFIG_PMAC_BACKLIGHT */
2964         case PMU_IOC_GET_MODEL:
2965                 return put_user(pmu_kind, argp);
2966         case PMU_IOC_HAS_ADB:
2967                 return put_user(pmu_has_adb, argp);
2968         }
2969         return -EINVAL;
2970 }
2971
2972 static struct file_operations pmu_device_fops __pmacdata = {
2973         .read           = pmu_read,
2974         .write          = pmu_write,
2975         .poll           = pmu_fpoll,
2976         .ioctl          = pmu_ioctl,
2977         .open           = pmu_open,
2978         .release        = pmu_release,
2979 };
2980
2981 static struct miscdevice pmu_device __pmacdata = {
2982         PMU_MINOR, "pmu", &pmu_device_fops
2983 };
2984
2985 void pmu_device_init(void)
2986 {
2987         if (!via)
2988                 return;
2989         if (misc_register(&pmu_device) < 0)
2990                 printk(KERN_ERR "via-pmu: cannot register misc device.\n");
2991 }
2992 #endif /* CONFIG_PMAC_PBOOK */
2993
2994 #ifdef DEBUG_SLEEP
2995 static inline void  __pmac
2996 polled_handshake(volatile unsigned char __iomem *via)
2997 {
2998         via[B] &= ~TREQ; eieio();
2999         while ((via[B] & TACK) != 0)
3000                 ;
3001         via[B] |= TREQ; eieio();
3002         while ((via[B] & TACK) == 0)
3003                 ;
3004 }
3005
3006 static inline void  __pmac
3007 polled_send_byte(volatile unsigned char __iomem *via, int x)
3008 {
3009         via[ACR] |= SR_OUT | SR_EXT; eieio();
3010         via[SR] = x; eieio();
3011         polled_handshake(via);
3012 }
3013
3014 static inline int __pmac
3015 polled_recv_byte(volatile unsigned char __iomem *via)
3016 {
3017         int x;
3018
3019         via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio();
3020         x = via[SR]; eieio();
3021         polled_handshake(via);
3022         x = via[SR]; eieio();
3023         return x;
3024 }
3025
3026 int __pmac
3027 pmu_polled_request(struct adb_request *req)
3028 {
3029         unsigned long flags;
3030         int i, l, c;
3031         volatile unsigned char __iomem *v = via;
3032
3033         req->complete = 1;
3034         c = req->data[0];
3035         l = pmu_data_len[c][0];
3036         if (l >= 0 && req->nbytes != l + 1)
3037                 return -EINVAL;
3038
3039         local_irq_save(flags);
3040         while (pmu_state != idle)
3041                 pmu_poll();
3042
3043         while ((via[B] & TACK) == 0)
3044                 ;
3045         polled_send_byte(v, c);
3046         if (l < 0) {
3047                 l = req->nbytes - 1;
3048                 polled_send_byte(v, l);
3049         }
3050         for (i = 1; i <= l; ++i)
3051                 polled_send_byte(v, req->data[i]);
3052
3053         l = pmu_data_len[c][1];
3054         if (l < 0)
3055                 l = polled_recv_byte(v);
3056         for (i = 0; i < l; ++i)
3057                 req->reply[i + req->reply_len] = polled_recv_byte(v);
3058
3059         if (req->done)
3060                 (*req->done)(req);
3061
3062         local_irq_restore(flags);
3063         return 0;
3064 }
3065 #endif /* DEBUG_SLEEP */
3066
3067
3068 /* FIXME: This is a temporary set of callbacks to enable us
3069  * to do suspend-to-disk.
3070  */
3071
3072 #ifdef CONFIG_PM
3073
3074 static int pmu_sys_suspended = 0;
3075
3076 static int pmu_sys_suspend(struct sys_device *sysdev, pm_message_t state)
3077 {
3078         if (state != PM_SUSPEND_DISK || pmu_sys_suspended)
3079                 return 0;
3080
3081         /* Suspend PMU event interrupts */
3082         pmu_suspend();
3083
3084         pmu_sys_suspended = 1;
3085         return 0;
3086 }
3087
3088 static int pmu_sys_resume(struct sys_device *sysdev)
3089 {
3090         struct adb_request req;
3091
3092         if (!pmu_sys_suspended)
3093                 return 0;
3094
3095         /* Tell PMU we are ready */
3096         pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
3097         pmu_wait_complete(&req);
3098
3099         /* Resume PMU event interrupts */
3100         pmu_resume();
3101
3102         pmu_sys_suspended = 0;
3103
3104         return 0;
3105 }
3106
3107 #endif /* CONFIG_PM */
3108
3109 static struct sysdev_class pmu_sysclass = {
3110         set_kset_name("pmu"),
3111 };
3112
3113 static struct sys_device device_pmu = {
3114         .id             = 0,
3115         .cls            = &pmu_sysclass,
3116 };
3117
3118 static struct sysdev_driver driver_pmu = {
3119 #ifdef CONFIG_PM
3120         .suspend        = &pmu_sys_suspend,
3121         .resume         = &pmu_sys_resume,
3122 #endif /* CONFIG_PM */
3123 };
3124
3125 static int __init init_pmu_sysfs(void)
3126 {
3127         int rc;
3128
3129         rc = sysdev_class_register(&pmu_sysclass);
3130         if (rc) {
3131                 printk(KERN_ERR "Failed registering PMU sys class\n");
3132                 return -ENODEV;
3133         }
3134         rc = sysdev_register(&device_pmu);
3135         if (rc) {
3136                 printk(KERN_ERR "Failed registering PMU sys device\n");
3137                 return -ENODEV;
3138         }
3139         rc = sysdev_driver_register(&pmu_sysclass, &driver_pmu);
3140         if (rc) {
3141                 printk(KERN_ERR "Failed registering PMU sys driver\n");
3142                 return -ENODEV;
3143         }
3144         return 0;
3145 }
3146
3147 subsys_initcall(init_pmu_sysfs);
3148
3149 EXPORT_SYMBOL(pmu_request);
3150 EXPORT_SYMBOL(pmu_poll);
3151 EXPORT_SYMBOL(pmu_poll_adb);
3152 EXPORT_SYMBOL(pmu_wait_complete);
3153 EXPORT_SYMBOL(pmu_suspend);
3154 EXPORT_SYMBOL(pmu_resume);
3155 EXPORT_SYMBOL(pmu_unlock);
3156 EXPORT_SYMBOL(pmu_i2c_combined_read);
3157 EXPORT_SYMBOL(pmu_i2c_stdsub_write);
3158 EXPORT_SYMBOL(pmu_i2c_simple_read);
3159 EXPORT_SYMBOL(pmu_i2c_simple_write);
3160 #ifdef CONFIG_PMAC_PBOOK
3161 EXPORT_SYMBOL(pmu_register_sleep_notifier);
3162 EXPORT_SYMBOL(pmu_unregister_sleep_notifier);
3163 EXPORT_SYMBOL(pmu_enable_irled);
3164 EXPORT_SYMBOL(pmu_battery_count);
3165 EXPORT_SYMBOL(pmu_batteries);
3166 EXPORT_SYMBOL(pmu_power_flags);
3167 #endif /* CONFIG_PMAC_PBOOK */
3168