err.no Git - 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 struct device_node *gpio_node;
 151 static unsigned char __iomem *gpio_reg = NULL;
 152 static int gpio_irq = -1;
 153 static int gpio_irq_enabled = -1;
 154 static volatile int pmu_suspended = 0;
 155 static spinlock_t pmu_lock;
 156 static u8 pmu_intr_mask;
 157 static int pmu_version;
 158 static int drop_interrupts;
 159 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
 160 static int option_lid_wakeup = 1;
 161 static int sleep_in_progress;
 162 #endif /* CONFIG_PM && CONFIG_PPC32 */
 163 static unsigned long async_req_locks;
 164 static unsigned int pmu_irq_stats[11];
 165
 166 static struct proc_dir_entry *proc_pmu_root;
 167 static struct proc_dir_entry *proc_pmu_info;
 168 static struct proc_dir_entry *proc_pmu_irqstats;
 169 static struct proc_dir_entry *proc_pmu_options;
 170 static int option_server_mode;
 171
 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
 180 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
 181 extern int disable_kernel_backlight;
 182 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
 183
 184 int __fake_sleep;
 185 int asleep;
 186 struct notifier_block *sleep_notifier_list;
 187
 188 #ifdef CONFIG_ADB
 189 static int adb_dev_map = 0;
 190 static int pmu_adb_flags;
 191
 192 static int pmu_probe(void);
 193 static int pmu_init(void);
 194 static int pmu_send_request(struct adb_request *req, int sync);
 195 static int pmu_adb_autopoll(int devs);
 196 static int pmu_adb_reset_bus(void);
 197 #endif /* CONFIG_ADB */
 198
 199 static int init_pmu(void);
 200 static int pmu_queue_request(struct adb_request *req);
 201 static void pmu_start(void);
 202 static irqreturn_t via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs);
 203 static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs);
 204 static int proc_get_info(char *page, char **start, off_t off,
 205                           int count, int *eof, void *data);
 206 static int proc_get_irqstats(char *page, char **start, off_t off,
 207                           int count, int *eof, void *data);
 208 #ifdef CONFIG_PMAC_BACKLIGHT
 209 static int pmu_set_backlight_level(int level, void* data);
 210 static int pmu_set_backlight_enable(int on, int level, void* data);
 211 #endif /* CONFIG_PMAC_BACKLIGHT */
 212 static void pmu_pass_intr(unsigned char *data, int len);
 213 static int proc_get_batt(char *page, char **start, off_t off,
 214                         int count, int *eof, void *data);
 215 static int proc_read_options(char *page, char **start, off_t off,
 216                         int count, int *eof, void *data);
 217 static int proc_write_options(struct file *file, const char __user *buffer,
 218                         unsigned long count, void *data);
 219
 220 #ifdef CONFIG_ADB
 221 struct adb_driver via_pmu_driver = {
 222         "PMU",
 223         pmu_probe,
 224         pmu_init,
 225         pmu_send_request,
 226         pmu_adb_autopoll,
 227         pmu_poll_adb,
 228         pmu_adb_reset_bus
 229 };
 230 #endif /* CONFIG_ADB */
 231
 232 extern void low_sleep_handler(void);
 233 extern void enable_kernel_altivec(void);
 234 extern void enable_kernel_fp(void);
 235
 236 #ifdef DEBUG_SLEEP
 237 int pmu_polled_request(struct adb_request *req);
 238 int pmu_wink(struct adb_request *req);
 239 #endif
 240
 241 /*
 242  * This table indicates for each PMU opcode:
 243  * - the number of data bytes to be sent with the command, or -1
 244  *   if a length byte should be sent,
 245  * - the number of response bytes which the PMU will return, or
 246  *   -1 if it will send a length byte.
 247  */
 248 static const s8 pmu_data_len[256][2] = {
 249 /*         0       1       2       3       4       5       6       7  */
 250 /*00*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 251 /*08*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 252 /*10*/  { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 253 /*18*/  { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
 254 /*20*/  {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
 255 /*28*/  { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
 256 /*30*/  { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 257 /*38*/  { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
 258 /*40*/  { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 259 /*48*/  { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
 260 /*50*/  { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
 261 /*58*/  { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
 262 /*60*/  { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 263 /*68*/  { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
 264 /*70*/  { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 265 /*78*/  { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
 266 /*80*/  { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 267 /*88*/  { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 268 /*90*/  { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 269 /*98*/  { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 270 /*a0*/  { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
 271 /*a8*/  { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 272 /*b0*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 273 /*b8*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 274 /*c0*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 275 /*c8*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 276 /*d0*/  { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 277 /*d8*/  { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
 278 /*e0*/  {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
 279 /*e8*/  { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
 280 /*f0*/  {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
 281 /*f8*/  {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
 282 };
 283
 284 static char *pbook_type[] = {
 285         "Unknown PowerBook",
 286         "PowerBook 2400/3400/3500(G3)",
 287         "PowerBook G3 Series",
 288         "1999 PowerBook G3",
 289         "Core99"
 290 };
 291
 292 #ifdef CONFIG_PMAC_BACKLIGHT
 293 static struct backlight_controller pmu_backlight_controller = {
 294         pmu_set_backlight_enable,
 295         pmu_set_backlight_level
 296 };
 297 #endif /* CONFIG_PMAC_BACKLIGHT */
 298
 299 int __init find_via_pmu(void)
 300 {
 301         phys_addr_t taddr;
 302         u32 *reg;
 303
 304         if (via != 0)
 305                 return 1;
 306         vias = of_find_node_by_name(NULL, "via-pmu");
 307         if (vias == NULL)
 308                 return 0;
 309
 310         reg = (u32 *)get_property(vias, "reg", NULL);
 311         if (reg == NULL) {
 312                 printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
 313                 goto fail;
 314         }
 315         taddr = of_translate_address(vias, reg);
 316         if (taddr == OF_BAD_ADDR) {
 317                 printk(KERN_ERR "via-pmu: Can't translate address !\n");
 318                 goto fail;
 319         }
 320
 321         spin_lock_init(&pmu_lock);
 322
 323         pmu_has_adb = 1;
 324
 325         pmu_intr_mask = PMU_INT_PCEJECT |
 326                         PMU_INT_SNDBRT |
 327                         PMU_INT_ADB |
 328                         PMU_INT_TICK;
 329
 330         if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0)
 331             || device_is_compatible(vias->parent, "ohare")))
 332                 pmu_kind = PMU_OHARE_BASED;
 333         else if (device_is_compatible(vias->parent, "paddington"))
 334                 pmu_kind = PMU_PADDINGTON_BASED;
 335         else if (device_is_compatible(vias->parent, "heathrow"))
 336                 pmu_kind = PMU_HEATHROW_BASED;
 337         else if (device_is_compatible(vias->parent, "Keylargo")
 338                  || device_is_compatible(vias->parent, "K2-Keylargo")) {
 339                 struct device_node *gpiop;
 340                 phys_addr_t gaddr = 0;
 341
 342                 pmu_kind = PMU_KEYLARGO_BASED;
 343                 pmu_has_adb = (find_type_devices("adb") != NULL);
 344                 pmu_intr_mask = PMU_INT_PCEJECT |
 345                                 PMU_INT_SNDBRT |
 346                                 PMU_INT_ADB |
 347                                 PMU_INT_TICK |
 348                                 PMU_INT_ENVIRONMENT;
 349
 350                 gpiop = of_find_node_by_name(NULL, "gpio");
 351                 if (gpiop) {
 352                         reg = (u32 *)get_property(gpiop, "reg", NULL);
 353                         if (reg)
 354                                 gaddr = of_translate_address(gpiop, reg);
 355                         if (gaddr != 0)
 356                                 gpio_reg = ioremap(gaddr, 0x10);
 357                 }
 358                 if (gpio_reg == NULL)
 359                         printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n");
 360         } else
 361                 pmu_kind = PMU_UNKNOWN;
 362
 363         via = ioremap(taddr, 0x2000);
 364         if (via == NULL) {
 365                 printk(KERN_ERR "via-pmu: Can't map address !\n");
 366                 goto fail;
 367         }
 368
 369         out_8(&via[IER], IER_CLR | 0x7f);       /* disable all intrs */
 370         out_8(&via[IFR], 0x7f);                 /* clear IFR */
 371
 372         pmu_state = idle;
 373
 374         if (!init_pmu()) {
 375                 via = NULL;
 376                 return 0;
 377         }
 378
 379         printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n",
 380                PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
 381
 382         sys_ctrler = SYS_CTRLER_PMU;
 383
 384         return 1;
 385  fail:
 386         of_node_put(vias);
 387         vias = NULL;
 388         return 0;
 389 }
 390
 391 #ifdef CONFIG_ADB
 392 static int pmu_probe(void)
 393 {
 394         return vias == NULL? -ENODEV: 0;
 395 }
 396
 397 static int __init pmu_init(void)
 398 {
 399         if (vias == NULL)
 400                 return -ENODEV;
 401         return 0;
 402 }
 403 #endif /* CONFIG_ADB */
 404
 405 /*
 406  * We can't wait until pmu_init gets called, that happens too late.
 407  * It happens after IDE and SCSI initialization, which can take a few
 408  * seconds, and by that time the PMU could have given up on us and
 409  * turned us off.
 410  * Thus this is called with arch_initcall rather than device_initcall.
 411  */
 412 static int __init via_pmu_start(void)
 413 {
 414         if (vias == NULL)
 415                 return -ENODEV;
 416
 417         bright_req_1.complete = 1;
 418         bright_req_2.complete = 1;
 419         batt_req.complete = 1;
 420
 421 #ifndef CONFIG_PPC_MERGE
 422         if (pmu_kind == PMU_KEYLARGO_BASED)
 423                 openpic_set_irq_priority(vias->intrs[0].line,
 424                                          OPENPIC_PRIORITY_DEFAULT + 1);
 425 #endif
 426
 427         if (request_irq(vias->intrs[0].line, via_pmu_interrupt, 0, "VIA-PMU",
 428                         (void *)0)) {
 429                 printk(KERN_ERR "VIA-PMU: can't get irq %d\n",
 430                        vias->intrs[0].line);
 431                 return -EAGAIN;
 432         }
 433
 434         if (pmu_kind == PMU_KEYLARGO_BASED) {
 435                 gpio_node = of_find_node_by_name(NULL, "extint-gpio1");
 436                 if (gpio_node == NULL)
 437                         gpio_node = of_find_node_by_name(NULL,
 438                                                          "pmu-interrupt");
 439                 if (gpio_node && gpio_node->n_intrs > 0)
 440                         gpio_irq = gpio_node->intrs[0].line;
 441
 442                 if (gpio_irq != -1) {
 443                         if (request_irq(gpio_irq, gpio1_interrupt, 0,
 444                                         "GPIO1 ADB", (void *)0))
 445                                 printk(KERN_ERR "pmu: can't get irq %d"
 446                                        " (GPIO1)\n", gpio_irq);
 447                         else
 448                                 gpio_irq_enabled = 1;
 449                 }
 450         }
 451
 452         /* Enable interrupts */
 453         out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
 454
 455         pmu_fully_inited = 1;
 456
 457         /* Make sure PMU settle down before continuing. This is _very_ important
 458          * since the IDE probe may shut interrupts down for quite a bit of time. If
 459          * a PMU communication is pending while this happens, the PMU may timeout
 460          * Not that on Core99 machines, the PMU keeps sending us environement
 461          * messages, we should find a way to either fix IDE or make it call
 462          * pmu_suspend() before masking interrupts. This can also happens while
 463          * scolling with some fbdevs.
 464          */
 465         do {
 466                 pmu_poll();
 467         } while (pmu_state != idle);
 468
 469         return 0;
 470 }
 471
 472 arch_initcall(via_pmu_start);
 473
 474 /*
 475  * This has to be done after pci_init, which is a subsys_initcall.
 476  */
 477 static int __init via_pmu_dev_init(void)
 478 {
 479         if (vias == NULL)
 480                 return -ENODEV;
 481
 482 #ifndef CONFIG_PPC64
 483         request_OF_resource(vias, 0, NULL);
 484 #endif
 485 #ifdef CONFIG_PMAC_BACKLIGHT
 486         /* Enable backlight */
 487         register_backlight_controller(&pmu_backlight_controller, NULL, "pmu");
 488 #endif /* CONFIG_PMAC_BACKLIGHT */
 489
 490 #ifdef CONFIG_PPC32
 491         if (machine_is_compatible("AAPL,3400/2400") ||
 492                 machine_is_compatible("AAPL,3500")) {
 493                 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 494                         NULL, PMAC_MB_INFO_MODEL, 0);
 495                 pmu_battery_count = 1;
 496                 if (mb == PMAC_TYPE_COMET)
 497                         pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
 498                 else
 499                         pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
 500         } else if (machine_is_compatible("AAPL,PowerBook1998") ||
 501                 machine_is_compatible("PowerBook1,1")) {
 502                 pmu_battery_count = 2;
 503                 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
 504                 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
 505         } else {
 506                 struct device_node* prim = find_devices("power-mgt");
 507                 u32 *prim_info = NULL;
 508                 if (prim)
 509                         prim_info = (u32 *)get_property(prim, "prim-info", NULL);
 510                 if (prim_info) {
 511                         /* Other stuffs here yet unknown */
 512                         pmu_battery_count = (prim_info[6] >> 16) & 0xff;
 513                         pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
 514                         if (pmu_battery_count > 1)
 515                                 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
 516                 }
 517         }
 518 #endif /* CONFIG_PPC32 */
 519
 520         /* Create /proc/pmu */
 521         proc_pmu_root = proc_mkdir("pmu", NULL);
 522         if (proc_pmu_root) {
 523                 long i;
 524
 525                 for (i=0; i<pmu_battery_count; i++) {
 526                         char title[16];
 527                         sprintf(title, "battery_%ld", i);
 528                         proc_pmu_batt[i] = create_proc_read_entry(title, 0, proc_pmu_root,
 529                                                 proc_get_batt, (void *)i);
 530                 }
 531
 532                 proc_pmu_info = create_proc_read_entry("info", 0, proc_pmu_root,
 533                                         proc_get_info, NULL);
 534                 proc_pmu_irqstats = create_proc_read_entry("interrupts", 0, proc_pmu_root,
 535                                         proc_get_irqstats, NULL);
 536                 proc_pmu_options = create_proc_entry("options", 0600, proc_pmu_root);
 537                 if (proc_pmu_options) {
 538                         proc_pmu_options->nlink = 1;
 539                         proc_pmu_options->read_proc = proc_read_options;
 540                         proc_pmu_options->write_proc = proc_write_options;
 541                 }
 542         }
 543         return 0;
 544 }
 545
 546 device_initcall(via_pmu_dev_init);
 547
 548 static int
 549 init_pmu(void)
 550 {
 551         int timeout;
 552         struct adb_request req;
 553
 554         out_8(&via[B], via[B] | TREQ);                  /* negate TREQ */
 555         out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK);  /* TACK in, TREQ out */
 556
 557         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
 558         timeout =  100000;
 559         while (!req.complete) {
 560                 if (--timeout < 0) {
 561                         printk(KERN_ERR "init_pmu: no response from PMU\n");
 562                         return 0;
 563                 }
 564                 udelay(10);
 565                 pmu_poll();
 566         }
 567
 568         /* ack all pending interrupts */
 569         timeout = 100000;
 570         interrupt_data[0][0] = 1;
 571         while (interrupt_data[0][0] || pmu_state != idle) {
 572                 if (--timeout < 0) {
 573                         printk(KERN_ERR "init_pmu: timed out acking intrs\n");
 574                         return 0;
 575                 }
 576                 if (pmu_state == idle)
 577                         adb_int_pending = 1;
 578                 via_pmu_interrupt(0, NULL, NULL);
 579                 udelay(10);
 580         }
 581
 582         /* Tell PMU we are ready.  */
 583         if (pmu_kind == PMU_KEYLARGO_BASED) {
 584                 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
 585                 while (!req.complete)
 586                         pmu_poll();
 587         }
 588
 589         /* Read PMU version */
 590         pmu_request(&req, NULL, 1, PMU_GET_VERSION);
 591         pmu_wait_complete(&req);
 592         if (req.reply_len > 0)
 593                 pmu_version = req.reply[0];
 594
 595         /* Read server mode setting */
 596         if (pmu_kind == PMU_KEYLARGO_BASED) {
 597                 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS,
 598                             PMU_PWR_GET_POWERUP_EVENTS);
 599                 pmu_wait_complete(&req);
 600                 if (req.reply_len == 2) {
 601                         if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT)
 602                                 option_server_mode = 1;
 603                         printk(KERN_INFO "via-pmu: Server Mode is %s\n",
 604                                option_server_mode ? "enabled" : "disabled");
 605                 }
 606         }
 607         return 1;
 608 }
 609
 610 int
 611 pmu_get_model(void)
 612 {
 613         return pmu_kind;
 614 }
 615
 616 static void pmu_set_server_mode(int server_mode)
 617 {
 618         struct adb_request req;
 619
 620         if (pmu_kind != PMU_KEYLARGO_BASED)
 621                 return;
 622
 623         option_server_mode = server_mode;
 624         pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS);
 625         pmu_wait_complete(&req);
 626         if (req.reply_len < 2)
 627                 return;
 628         if (server_mode)
 629                 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
 630                             PMU_PWR_SET_POWERUP_EVENTS,
 631                             req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
 632         else
 633                 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
 634                             PMU_PWR_CLR_POWERUP_EVENTS,
 635                             req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
 636         pmu_wait_complete(&req);
 637 }
 638
 639 /* This new version of the code for 2400/3400/3500 powerbooks
 640  * is inspired from the implementation in gkrellm-pmu
 641  */
 642 static void
 643 done_battery_state_ohare(struct adb_request* req)
 644 {
 645         /* format:
 646          *  [0]    :  flags
 647          *    0x01 :  AC indicator
 648          *    0x02 :  charging
 649          *    0x04 :  battery exist
 650          *    0x08 :
 651          *    0x10 :
 652          *    0x20 :  full charged
 653          *    0x40 :  pcharge reset
 654          *    0x80 :  battery exist
 655          *
 656          *  [1][2] :  battery voltage
 657          *  [3]    :  CPU temperature
 658          *  [4]    :  battery temperature
 659          *  [5]    :  current
 660          *  [6][7] :  pcharge
 661          *              --tkoba
 662          */
 663         unsigned int bat_flags = PMU_BATT_TYPE_HOOPER;
 664         long pcharge, charge, vb, vmax, lmax;
 665         long vmax_charging, vmax_charged;
 666         long amperage, voltage, time, max;
 667         int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
 668                         NULL, PMAC_MB_INFO_MODEL, 0);
 669
 670         if (req->reply[0] & 0x01)
 671                 pmu_power_flags |= PMU_PWR_AC_PRESENT;
 672         else
 673                 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
 674
 675         if (mb == PMAC_TYPE_COMET) {
 676                 vmax_charged = 189;
 677                 vmax_charging = 213;
 678                 lmax = 6500;
 679         } else {
 680                 vmax_charged = 330;
 681                 vmax_charging = 330;
 682                 lmax = 6500;
 683         }
 684         vmax = vmax_charged;
 685
 686         /* If battery installed */
 687         if (req->reply[0] & 0x04) {
 688                 bat_flags |= PMU_BATT_PRESENT;
 689                 if (req->reply[0] & 0x02)
 690                         bat_flags |= PMU_BATT_CHARGING;
 691                 vb = (req->reply[1] << 8) | req->reply[2];
 692                 voltage = (vb * 265 + 72665) / 10;
 693                 amperage = req->reply[5];
 694                 if ((req->reply[0] & 0x01) == 0) {
 695                         if (amperage > 200)
 696                                 vb += ((amperage - 200) * 15)/100;
 697                 } else if (req->reply[0] & 0x02) {
 698                         vb = (vb * 97) / 100;
 699                         vmax = vmax_charging;
 700                 }
 701                 charge = (100 * vb) / vmax;
 702                 if (req->reply[0] & 0x40) {
 703                         pcharge = (req->reply[6] << 8) + req->reply[7];
 704                         if (pcharge > lmax)
 705                                 pcharge = lmax;
 706                         pcharge *= 100;
 707                         pcharge = 100 - pcharge / lmax;
 708                         if (pcharge < charge)
 709                                 charge = pcharge;
 710                 }
 711                 if (amperage > 0)
 712                         time = (charge * 16440) / amperage;
 713                 else
 714                         time = 0;
 715                 max = 100;
 716                 amperage = -amperage;
 717         } else
 718                 charge = max = amperage = voltage = time = 0;
 719
 720         pmu_batteries[pmu_cur_battery].flags = bat_flags;
 721         pmu_batteries[pmu_cur_battery].charge = charge;
 722         pmu_batteries[pmu_cur_battery].max_charge = max;
 723         pmu_batteries[pmu_cur_battery].amperage = amperage;
 724         pmu_batteries[pmu_cur_battery].voltage = voltage;
 725         pmu_batteries[pmu_cur_battery].time_remaining = time;
 726
 727         clear_bit(0, &async_req_locks);
 728 }
 729
 730 static void
 731 done_battery_state_smart(struct adb_request* req)
 732 {
 733         /* format:
 734          *  [0] : format of this structure (known: 3,4,5)
 735          *  [1] : flags
 736          *
 737          *  format 3 & 4:
 738          *
 739          *  [2] : charge
 740          *  [3] : max charge
 741          *  [4] : current
 742          *  [5] : voltage
 743          *
 744          *  format 5:
 745          *
 746          *  [2][3] : charge
 747          *  [4][5] : max charge
 748          *  [6][7] : current
 749          *  [8][9] : voltage
 750          */
 751
 752         unsigned int bat_flags = PMU_BATT_TYPE_SMART;
 753         int amperage;
 754         unsigned int capa, max, voltage;
 755
 756         if (req->reply[1] & 0x01)
 757                 pmu_power_flags |= PMU_PWR_AC_PRESENT;
 758         else
 759                 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
 760
 761
 762         capa = max = amperage = voltage = 0;
 763
 764         if (req->reply[1] & 0x04) {
 765                 bat_flags |= PMU_BATT_PRESENT;
 766                 switch(req->reply[0]) {
 767                         case 3:
 768                         case 4: capa = req->reply[2];
 769                                 max = req->reply[3];
 770                                 amperage = *((signed char *)&req->reply[4]);
 771                                 voltage = req->reply[5];
 772                                 break;
 773                         case 5: capa = (req->reply[2] << 8) | req->reply[3];
 774                                 max = (req->reply[4] << 8) | req->reply[5];
 775                                 amperage = *((signed short *)&req->reply[6]);
 776                                 voltage = (req->reply[8] << 8) | req->reply[9];
 777                                 break;
 778                         default:
 779                                 printk(KERN_WARNING "pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
 780                                         req->reply_len, req->reply[0], req->reply[1], req->reply[2], req->reply[3]);
 781                                 break;
 782                 }
 783         }
 784
 785         if ((req->reply[1] & 0x01) && (amperage > 0))
 786                 bat_flags |= PMU_BATT_CHARGING;
 787
 788         pmu_batteries[pmu_cur_battery].flags = bat_flags;
 789         pmu_batteries[pmu_cur_battery].charge = capa;
 790         pmu_batteries[pmu_cur_battery].max_charge = max;
 791         pmu_batteries[pmu_cur_battery].amperage = amperage;
 792         pmu_batteries[pmu_cur_battery].voltage = voltage;
 793         if (amperage) {
 794                 if ((req->reply[1] & 0x01) && (amperage > 0))
 795                         pmu_batteries[pmu_cur_battery].time_remaining
 796                                 = ((max-capa) * 3600) / amperage;
 797                 else
 798                         pmu_batteries[pmu_cur_battery].time_remaining
 799                                 = (capa * 3600) / (-amperage);
 800         } else
 801                 pmu_batteries[pmu_cur_battery].time_remaining = 0;
 802
 803         pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count;
 804
 805         clear_bit(0, &async_req_locks);
 806 }
 807
 808 static void
 809 query_battery_state(void)
 810 {
 811         if (test_and_set_bit(0, &async_req_locks))
 812                 return;
 813         if (pmu_kind == PMU_OHARE_BASED)
 814                 pmu_request(&batt_req, done_battery_state_ohare,
 815                         1, PMU_BATTERY_STATE);
 816         else
 817                 pmu_request(&batt_req, done_battery_state_smart,
 818                         2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
 819 }
 820
 821 static int
 822 proc_get_info(char *page, char **start, off_t off,
 823                 int count, int *eof, void *data)
 824 {
 825         char* p = page;
 826
 827         p += sprintf(p, "PMU driver version     : %d\n", PMU_DRIVER_VERSION);
 828         p += sprintf(p, "PMU firmware version   : %02x\n", pmu_version);
 829         p += sprintf(p, "AC Power               : %d\n",
 830                 ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0));
 831         p += sprintf(p, "Battery count          : %d\n", pmu_battery_count);
 832
 833         return p - page;
 834 }
 835
 836 static int
 837 proc_get_irqstats(char *page, char **start, off_t off,
 838                   int count, int *eof, void *data)
 839 {
 840         int i;
 841         char* p = page;
 842         static const char *irq_names[] = {
 843                 "Total CB1 triggered events",
 844                 "Total GPIO1 triggered events",
 845                 "PC-Card eject button",
 846                 "Sound/Brightness button",
 847                 "ADB message",
 848                 "Battery state change",
 849                 "Environment interrupt",
 850                 "Tick timer",
 851                 "Ghost interrupt (zero len)",
 852                 "Empty interrupt (empty mask)",
 853                 "Max irqs in a row"
 854         };
 855
 856         for (i=0; i<11; i++) {
 857                 p += sprintf(p, " %2u: %10u (%s)\n",
 858                              i, pmu_irq_stats[i], irq_names[i]);
 859         }
 860         return p - page;
 861 }
 862
 863 static int
 864 proc_get_batt(char *page, char **start, off_t off,
 865                 int count, int *eof, void *data)
 866 {
 867         long batnum = (long)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
 887 static int
 888 proc_read_options(char *page, char **start, off_t off,
 889                         int count, int *eof, void *data)
 890 {
 891         char *p = page;
 892
 893 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
 894         if (pmu_kind == PMU_KEYLARGO_BASED &&
 895             pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
 896                 p += sprintf(p, "lid_wakeup=%d\n", option_lid_wakeup);
 897 #endif
 898         if (pmu_kind == PMU_KEYLARGO_BASED)
 899                 p += sprintf(p, "server_mode=%d\n", option_server_mode);
 900
 901         return p - page;
 902 }
 903
 904 static int
 905 proc_write_options(struct file *file, const char __user *buffer,
 906                         unsigned long count, void *data)
 907 {
 908         char tmp[33];
 909         char *label, *val;
 910         unsigned long fcount = count;
 911
 912         if (!count)
 913                 return -EINVAL;
 914         if (count > 32)
 915                 count = 32;
 916         if (copy_from_user(tmp, buffer, count))
 917                 return -EFAULT;
 918         tmp[count] = 0;
 919
 920         label = tmp;
 921         while(*label == ' ')
 922                 label++;
 923         val = label;
 924         while(*val && (*val != '=')) {
 925                 if (*val == ' ')
 926                         *val = 0;
 927                 val++;
 928         }
 929         if ((*val) == 0)
 930                 return -EINVAL;
 931         *(val++) = 0;
 932         while(*val == ' ')
 933                 val++;
 934 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
 935         if (pmu_kind == PMU_KEYLARGO_BASED &&
 936             pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
 937                 if (!strcmp(label, "lid_wakeup"))
 938                         option_lid_wakeup = ((*val) == '1');
 939 #endif
 940         if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) {
 941                 int new_value;
 942                 new_value = ((*val) == '1');
 943                 if (new_value != option_server_mode)
 944                         pmu_set_server_mode(new_value);
 945         }
 946         return fcount;
 947 }
 948
 949 #ifdef CONFIG_ADB
 950 /* Send an ADB command */
 951 static int
 952 pmu_send_request(struct adb_request *req, int sync)
 953 {
 954         int i, ret;
 955
 956         if ((vias == NULL) || (!pmu_fully_inited)) {
 957                 req->complete = 1;
 958                 return -ENXIO;
 959         }
 960
 961         ret = -EINVAL;
 962
 963         switch (req->data[0]) {
 964         case PMU_PACKET:
 965                 for (i = 0; i < req->nbytes - 1; ++i)
 966                         req->data[i] = req->data[i+1];
 967                 --req->nbytes;
 968                 if (pmu_data_len[req->data[0]][1] != 0) {
 969                         req->reply[0] = ADB_RET_OK;
 970                         req->reply_len = 1;
 971                 } else
 972                         req->reply_len = 0;
 973                 ret = pmu_queue_request(req);
 974                 break;
 975         case CUDA_PACKET:
 976                 switch (req->data[1]) {
 977                 case CUDA_GET_TIME:
 978                         if (req->nbytes != 2)
 979                                 break;
 980                         req->data[0] = PMU_READ_RTC;
 981                         req->nbytes = 1;
 982                         req->reply_len = 3;
 983                         req->reply[0] = CUDA_PACKET;
 984                         req->reply[1] = 0;
 985                         req->reply[2] = CUDA_GET_TIME;
 986                         ret = pmu_queue_request(req);
 987                         break;
 988                 case CUDA_SET_TIME:
 989                         if (req->nbytes != 6)
 990                                 break;
 991                         req->data[0] = PMU_SET_RTC;
 992                         req->nbytes = 5;
 993                         for (i = 1; i <= 4; ++i)
 994                                 req->data[i] = req->data[i+1];
 995                         req->reply_len = 3;
 996                         req->reply[0] = CUDA_PACKET;
 997                         req->reply[1] = 0;
 998                         req->reply[2] = CUDA_SET_TIME;
 999                         ret = pmu_queue_request(req);
1000                         break;
1001                 }
1002                 break;
1003         case ADB_PACKET:
1004                 if (!pmu_has_adb)
1005                         return -ENXIO;
1006                 for (i = req->nbytes - 1; i > 1; --i)
1007                         req->data[i+2] = req->data[i];
1008                 req->data[3] = req->nbytes - 2;
1009                 req->data[2] = pmu_adb_flags;
1010                 /*req->data[1] = req->data[1];*/
1011                 req->data[0] = PMU_ADB_CMD;
1012                 req->nbytes += 2;
1013                 req->reply_expected = 1;
1014                 req->reply_len = 0;
1015                 ret = pmu_queue_request(req);
1016                 break;
1017         }
1018         if (ret) {
1019                 req->complete = 1;
1020                 return ret;
1021         }
1022
1023         if (sync)
1024                 while (!req->complete)
1025                         pmu_poll();
1026
1027         return 0;
1028 }
1029
1030 /* Enable/disable autopolling */
1031 static int
1032 pmu_adb_autopoll(int devs)
1033 {
1034         struct adb_request req;
1035
1036         if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1037                 return -ENXIO;
1038
1039         if (devs) {
1040                 adb_dev_map = devs;
1041                 pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
1042                             adb_dev_map >> 8, adb_dev_map);
1043                 pmu_adb_flags = 2;
1044         } else {
1045                 pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
1046                 pmu_adb_flags = 0;
1047         }
1048         while (!req.complete)
1049                 pmu_poll();
1050         return 0;
1051 }
1052
1053 /* Reset the ADB bus */
1054 static int
1055 pmu_adb_reset_bus(void)
1056 {
1057         struct adb_request req;
1058         int save_autopoll = adb_dev_map;
1059
1060         if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1061                 return -ENXIO;
1062
1063         /* anyone got a better idea?? */
1064         pmu_adb_autopoll(0);
1065
1066         req.nbytes = 5;
1067         req.done = NULL;
1068         req.data[0] = PMU_ADB_CMD;
1069         req.data[1] = 0;
1070         req.data[2] = ADB_BUSRESET;
1071         req.data[3] = 0;
1072         req.data[4] = 0;
1073         req.reply_len = 0;
1074         req.reply_expected = 1;
1075         if (pmu_queue_request(&req) != 0) {
1076                 printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
1077                 return -EIO;
1078         }
1079         pmu_wait_complete(&req);
1080
1081         if (save_autopoll != 0)
1082                 pmu_adb_autopoll(save_autopoll);
1083
1084         return 0;
1085 }
1086 #endif /* CONFIG_ADB */
1087
1088 /* Construct and send a pmu request */
1089 int
1090 pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
1091             int nbytes, ...)
1092 {
1093         va_list list;
1094         int i;
1095
1096         if (vias == NULL)
1097                 return -ENXIO;
1098
1099         if (nbytes < 0 || nbytes > 32) {
1100                 printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
1101                 req->complete = 1;
1102                 return -EINVAL;
1103         }
1104         req->nbytes = nbytes;
1105         req->done = done;
1106         va_start(list, nbytes);
1107         for (i = 0; i < nbytes; ++i)
1108                 req->data[i] = va_arg(list, int);
1109         va_end(list);
1110         req->reply_len = 0;
1111         req->reply_expected = 0;
1112         return pmu_queue_request(req);
1113 }
1114
1115 int
1116 pmu_queue_request(struct adb_request *req)
1117 {
1118         unsigned long flags;
1119         int nsend;
1120
1121         if (via == NULL) {
1122                 req->complete = 1;
1123                 return -ENXIO;
1124         }
1125         if (req->nbytes <= 0) {
1126                 req->complete = 1;
1127                 return 0;
1128         }
1129         nsend = pmu_data_len[req->data[0]][0];
1130         if (nsend >= 0 && req->nbytes != nsend + 1) {
1131                 req->complete = 1;
1132                 return -EINVAL;
1133         }
1134
1135         req->next = NULL;
1136         req->sent = 0;
1137         req->complete = 0;
1138
1139         spin_lock_irqsave(&pmu_lock, flags);
1140         if (current_req != 0) {
1141                 last_req->next = req;
1142                 last_req = req;
1143         } else {
1144                 current_req = req;
1145                 last_req = req;
1146                 if (pmu_state == idle)
1147                         pmu_start();
1148         }
1149         spin_unlock_irqrestore(&pmu_lock, flags);
1150
1151         return 0;
1152 }
1153
1154 static inline void
1155 wait_for_ack(void)
1156 {
1157         /* Sightly increased the delay, I had one occurrence of the message
1158          * reported
1159          */
1160         int timeout = 4000;
1161         while ((in_8(&via[B]) & TACK) == 0) {
1162                 if (--timeout < 0) {
1163                         printk(KERN_ERR "PMU not responding (!ack)\n");
1164                         return;
1165                 }
1166                 udelay(10);
1167         }
1168 }
1169
1170 /* New PMU seems to be very sensitive to those timings, so we make sure
1171  * PCI is flushed immediately */
1172 static inline void
1173 send_byte(int x)
1174 {
1175         volatile unsigned char __iomem *v = via;
1176
1177         out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT);
1178         out_8(&v[SR], x);
1179         out_8(&v[B], in_8(&v[B]) & ~TREQ);              /* assert TREQ */
1180         (void)in_8(&v[B]);
1181 }
1182
1183 static inline void
1184 recv_byte(void)
1185 {
1186         volatile unsigned char __iomem *v = via;
1187
1188         out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT);
1189         in_8(&v[SR]);           /* resets SR */
1190         out_8(&v[B], in_8(&v[B]) & ~TREQ);
1191         (void)in_8(&v[B]);
1192 }
1193
1194 static inline void
1195 pmu_done(struct adb_request *req)
1196 {
1197         void (*done)(struct adb_request *) = req->done;
1198         mb();
1199         req->complete = 1;
1200         /* Here, we assume that if the request has a done member, the
1201          * struct request will survive to setting req->complete to 1
1202          */
1203         if (done)
1204                 (*done)(req);
1205 }
1206
1207 static void
1208 pmu_start(void)
1209 {
1210         struct adb_request *req;
1211
1212         /* assert pmu_state == idle */
1213         /* get the packet to send */
1214         req = current_req;
1215         if (req == 0 || pmu_state != idle
1216             || (/*req->reply_expected && */req_awaiting_reply))
1217                 return;
1218
1219         pmu_state = sending;
1220         data_index = 1;
1221         data_len = pmu_data_len[req->data[0]][0];
1222
1223         /* Sounds safer to make sure ACK is high before writing. This helped
1224          * kill a problem with ADB and some iBooks
1225          */
1226         wait_for_ack();
1227         /* set the shift register to shift out and send a byte */
1228         send_byte(req->data[0]);
1229 }
1230
1231 void
1232 pmu_poll(void)
1233 {
1234         if (!via)
1235                 return;
1236         if (disable_poll)
1237                 return;
1238         via_pmu_interrupt(0, NULL, NULL);
1239 }
1240
1241 void
1242 pmu_poll_adb(void)
1243 {
1244         if (!via)
1245                 return;
1246         if (disable_poll)
1247                 return;
1248         /* Kicks ADB read when PMU is suspended */
1249         adb_int_pending = 1;
1250         do {
1251                 via_pmu_interrupt(0, NULL, NULL);
1252         } while (pmu_suspended && (adb_int_pending || pmu_state != idle
1253                 || req_awaiting_reply));
1254 }
1255
1256 void
1257 pmu_wait_complete(struct adb_request *req)
1258 {
1259         if (!via)
1260                 return;
1261         while((pmu_state != idle && pmu_state != locked) || !req->complete)
1262                 via_pmu_interrupt(0, NULL, NULL);
1263 }
1264
1265 /* This function loops until the PMU is idle and prevents it from
1266  * anwsering to ADB interrupts. pmu_request can still be called.
1267  * This is done to avoid spurrious shutdowns when we know we'll have
1268  * interrupts switched off for a long time
1269  */
1270 void
1271 pmu_suspend(void)
1272 {
1273         unsigned long flags;
1274 #ifdef SUSPEND_USES_PMU
1275         struct adb_request *req;
1276 #endif
1277         if (!via)
1278                 return;
1279
1280         spin_lock_irqsave(&pmu_lock, flags);
1281         pmu_suspended++;
1282         if (pmu_suspended > 1) {
1283                 spin_unlock_irqrestore(&pmu_lock, flags);
1284                 return;
1285         }
1286
1287         do {
1288                 spin_unlock_irqrestore(&pmu_lock, flags);
1289                 if (req_awaiting_reply)
1290                         adb_int_pending = 1;
1291                 via_pmu_interrupt(0, NULL, NULL);
1292                 spin_lock_irqsave(&pmu_lock, flags);
1293                 if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
1294 #ifdef SUSPEND_USES_PMU
1295                         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
1296                         spin_unlock_irqrestore(&pmu_lock, flags);
1297                         while(!req.complete)
1298                                 pmu_poll();
1299 #else /* SUSPEND_USES_PMU */
1300                         if (gpio_irq >= 0)
1301                                 disable_irq_nosync(gpio_irq);
1302                         out_8(&via[IER], CB1_INT | IER_CLR);
1303                         spin_unlock_irqrestore(&pmu_lock, flags);
1304 #endif /* SUSPEND_USES_PMU */
1305                         break;
1306                 }
1307         } while (1);
1308 }
1309
1310 void
1311 pmu_resume(void)
1312 {
1313         unsigned long flags;
1314
1315         if (!via || (pmu_suspended < 1))
1316                 return;
1317
1318         spin_lock_irqsave(&pmu_lock, flags);
1319         pmu_suspended--;
1320         if (pmu_suspended > 0) {
1321                 spin_unlock_irqrestore(&pmu_lock, flags);
1322                 return;
1323         }
1324         adb_int_pending = 1;
1325 #ifdef SUSPEND_USES_PMU
1326         pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
1327         spin_unlock_irqrestore(&pmu_lock, flags);
1328         while(!req.complete)
1329                 pmu_poll();
1330 #else /* SUSPEND_USES_PMU */
1331         if (gpio_irq >= 0)
1332                 enable_irq(gpio_irq);
1333         out_8(&via[IER], CB1_INT | IER_SET);
1334         spin_unlock_irqrestore(&pmu_lock, flags);
1335         pmu_poll();
1336 #endif /* SUSPEND_USES_PMU */
1337 }
1338
1339 /* Interrupt data could be the result data from an ADB cmd */
1340 static void
1341 pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
1342 {
1343         unsigned char ints, pirq;
1344         int i = 0;
1345
1346         asleep = 0;
1347         if (drop_interrupts || len < 1) {
1348                 adb_int_pending = 0;
1349                 pmu_irq_stats[8]++;
1350                 return;
1351         }
1352
1353         /* Get PMU interrupt mask */
1354         ints = data[0];
1355
1356         /* Record zero interrupts for stats */
1357         if (ints == 0)
1358                 pmu_irq_stats[9]++;
1359
1360         /* Hack to deal with ADB autopoll flag */
1361         if (ints & PMU_INT_ADB)
1362                 ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
1363
1364 next:
1365
1366         if (ints == 0) {
1367                 if (i > pmu_irq_stats[10])
1368                         pmu_irq_stats[10] = i;
1369                 return;
1370         }
1371
1372         for (pirq = 0; pirq < 8; pirq++)
1373                 if (ints & (1 << pirq))
1374                         break;
1375         pmu_irq_stats[pirq]++;
1376         i++;
1377         ints &= ~(1 << pirq);
1378
1379         /* Note: for some reason, we get an interrupt with len=1,
1380          * data[0]==0 after each normal ADB interrupt, at least
1381          * on the Pismo. Still investigating...  --BenH
1382          */
1383         if ((1 << pirq) & PMU_INT_ADB) {
1384                 if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
1385                         struct adb_request *req = req_awaiting_reply;
1386                         if (req == 0) {
1387                                 printk(KERN_ERR "PMU: extra ADB reply\n");
1388                                 return;
1389                         }
1390                         req_awaiting_reply = NULL;
1391                         if (len <= 2)
1392                                 req->reply_len = 0;
1393                         else {
1394                                 memcpy(req->reply, data + 1, len - 1);
1395                                 req->reply_len = len - 1;
1396                         }
1397                         pmu_done(req);
1398                 } else {
1399                         if (len == 4 && data[1] == 0x2c) {
1400                                 extern int xmon_wants_key, xmon_adb_keycode;
1401                                 if (xmon_wants_key) {
1402                                         xmon_adb_keycode = data[2];
1403                                         return;
1404                                 }
1405                         }
1406 #ifdef CONFIG_ADB
1407                         /*
1408                          * XXX On the [23]400 the PMU gives us an up
1409                          * event for keycodes 0x74 or 0x75 when the PC
1410                          * card eject buttons are released, so we
1411                          * ignore those events.
1412                          */
1413                         if (!(pmu_kind == PMU_OHARE_BASED && len == 4
1414                               && data[1] == 0x2c && data[3] == 0xff
1415                               && (data[2] & ~1) == 0xf4))
1416                                 adb_input(data+1, len-1, regs, 1);
1417 #endif /* CONFIG_ADB */
1418                 }
1419         }
1420         /* Sound/brightness button pressed */
1421         else if ((1 << pirq) & PMU_INT_SNDBRT) {
1422 #ifdef CONFIG_PMAC_BACKLIGHT
1423                 if (len == 3)
1424 #ifdef CONFIG_INPUT_ADBHID
1425                         if (!disable_kernel_backlight)
1426 #endif /* CONFIG_INPUT_ADBHID */
1427                                 set_backlight_level(data[1] >> 4);
1428 #endif /* CONFIG_PMAC_BACKLIGHT */
1429         }
1430         /* Tick interrupt */
1431         else if ((1 << pirq) & PMU_INT_TICK) {
1432                 /* Environement or tick interrupt, query batteries */
1433                 if (pmu_battery_count) {
1434                         if ((--query_batt_timer) == 0) {
1435                                 query_battery_state();
1436                                 query_batt_timer = BATTERY_POLLING_COUNT;
1437                         }
1438                 }
1439         }
1440         else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
1441                 if (pmu_battery_count)
1442                         query_battery_state();
1443                 pmu_pass_intr(data, len);
1444         } else {
1445                pmu_pass_intr(data, len);
1446         }
1447         goto next;
1448 }
1449
1450 static struct adb_request*
1451 pmu_sr_intr(struct pt_regs *regs)
1452 {
1453         struct adb_request *req;
1454         int bite = 0;
1455
1456         if (via[B] & TREQ) {
1457                 printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
1458                 out_8(&via[IFR], SR_INT);
1459                 return NULL;
1460         }
1461         /* The ack may not yet be low when we get the interrupt */
1462         while ((in_8(&via[B]) & TACK) != 0)
1463                         ;
1464
1465         /* if reading grab the byte, and reset the interrupt */
1466         if (pmu_state == reading || pmu_state == reading_intr)
1467                 bite = in_8(&via[SR]);
1468
1469         /* reset TREQ and wait for TACK to go high */
1470         out_8(&via[B], in_8(&via[B]) | TREQ);
1471         wait_for_ack();
1472
1473         switch (pmu_state) {
1474         case sending:
1475                 req = current_req;
1476                 if (data_len < 0) {
1477                         data_len = req->nbytes - 1;
1478                         send_byte(data_len);
1479                         break;
1480                 }
1481                 if (data_index <= data_len) {
1482                         send_byte(req->data[data_index++]);
1483                         break;
1484                 }
1485                 req->sent = 1;
1486                 data_len = pmu_data_len[req->data[0]][1];
1487                 if (data_len == 0) {
1488                         pmu_state = idle;
1489                         current_req = req->next;
1490                         if (req->reply_expected)
1491                                 req_awaiting_reply = req;
1492                         else
1493                                 return req;
1494                 } else {
1495                         pmu_state = reading;
1496                         data_index = 0;
1497                         reply_ptr = req->reply + req->reply_len;
1498                         recv_byte();
1499                 }
1500                 break;
1501
1502         case intack:
1503                 data_index = 0;
1504                 data_len = -1;
1505                 pmu_state = reading_intr;
1506                 reply_ptr = interrupt_data[int_data_last];
1507                 recv_byte();
1508                 if (gpio_irq >= 0 && !gpio_irq_enabled) {
1509                         enable_irq(gpio_irq);
1510                         gpio_irq_enabled = 1;
1511                 }
1512                 break;
1513
1514         case reading:
1515         case reading_intr:
1516                 if (data_len == -1) {
1517                         data_len = bite;
1518                         if (bite > 32)
1519                                 printk(KERN_ERR "PMU: bad reply len %d\n", bite);
1520                 } else if (data_index < 32) {
1521                         reply_ptr[data_index++] = bite;
1522                 }
1523                 if (data_index < data_len) {
1524                         recv_byte();
1525                         break;
1526                 }
1527
1528                 if (pmu_state == reading_intr) {
1529                         pmu_state = idle;
1530                         int_data_state[int_data_last] = int_data_ready;
1531                         interrupt_data_len[int_data_last] = data_len;
1532                 } else {
1533                         req = current_req;
1534                         /*
1535                          * For PMU sleep and freq change requests, we lock the
1536                          * PMU until it's explicitely unlocked. This avoids any
1537                          * spurrious event polling getting in
1538                          */
1539                         current_req = req->next;
1540                         req->reply_len += data_index;
1541                         if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED)
1542                                 pmu_state = locked;
1543                         else
1544                                 pmu_state = idle;
1545                         return req;
1546                 }
1547                 break;
1548
1549         default:
1550                 printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n",
1551                        pmu_state);
1552         }
1553         return NULL;
1554 }
1555
1556 static irqreturn_t
1557 via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs)
1558 {
1559         unsigned long flags;
1560         int intr;
1561         int nloop = 0;
1562         int int_data = -1;
1563         struct adb_request *req = NULL;
1564         int handled = 0;
1565
1566         /* This is a bit brutal, we can probably do better */
1567         spin_lock_irqsave(&pmu_lock, flags);
1568         ++disable_poll;
1569
1570         for (;;) {
1571                 intr = in_8(&via[IFR]) & (SR_INT | CB1_INT);
1572                 if (intr == 0)
1573                         break;
1574                 handled = 1;
1575                 if (++nloop > 1000) {
1576                         printk(KERN_DEBUG "PMU: stuck in intr loop, "
1577                                "intr=%x, ier=%x pmu_state=%d\n",
1578                                intr, in_8(&via[IER]), pmu_state);
1579                         break;
1580                 }
1581                 out_8(&via[IFR], intr);
1582                 if (intr & CB1_INT) {
1583                         adb_int_pending = 1;
1584                         pmu_irq_stats[0]++;
1585                 }
1586                 if (intr & SR_INT) {
1587                         req = pmu_sr_intr(regs);
1588                         if (req)
1589                                 break;
1590                 }
1591         }
1592
1593 recheck:
1594         if (pmu_state == idle) {
1595                 if (adb_int_pending) {
1596                         if (int_data_state[0] == int_data_empty)
1597                                 int_data_last = 0;
1598                         else if (int_data_state[1] == int_data_empty)
1599                                 int_data_last = 1;
1600                         else
1601                                 goto no_free_slot;
1602                         pmu_state = intack;
1603                         int_data_state[int_data_last] = int_data_fill;
1604                         /* Sounds safer to make sure ACK is high before writing.
1605                          * This helped kill a problem with ADB and some iBooks
1606                          */
1607                         wait_for_ack();
1608                         send_byte(PMU_INT_ACK);
1609                         adb_int_pending = 0;
1610                 } else if (current_req)
1611                         pmu_start();
1612         }
1613 no_free_slot:
1614         /* Mark the oldest buffer for flushing */
1615         if (int_data_state[!int_data_last] == int_data_ready) {
1616                 int_data_state[!int_data_last] = int_data_flush;
1617                 int_data = !int_data_last;
1618         } else if (int_data_state[int_data_last] == int_data_ready) {
1619                 int_data_state[int_data_last] = int_data_flush;
1620                 int_data = int_data_last;
1621         }
1622         --disable_poll;
1623         spin_unlock_irqrestore(&pmu_lock, flags);
1624
1625         /* Deal with completed PMU requests outside of the lock */
1626         if (req) {
1627                 pmu_done(req);
1628                 req = NULL;
1629         }
1630
1631         /* Deal with interrupt datas outside of the lock */
1632         if (int_data >= 0) {
1633                 pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data], regs);
1634                 spin_lock_irqsave(&pmu_lock, flags);
1635                 ++disable_poll;
1636                 int_data_state[int_data] = int_data_empty;
1637                 int_data = -1;
1638                 goto recheck;
1639         }
1640
1641         return IRQ_RETVAL(handled);
1642 }
1643
1644 void
1645 pmu_unlock(void)
1646 {
1647         unsigned long flags;
1648
1649         spin_lock_irqsave(&pmu_lock, flags);
1650         if (pmu_state == locked)
1651                 pmu_state = idle;
1652         adb_int_pending = 1;
1653         spin_unlock_irqrestore(&pmu_lock, flags);
1654 }
1655
1656
1657 static irqreturn_t
1658 gpio1_interrupt(int irq, void *arg, struct pt_regs *regs)
1659 {
1660         unsigned long flags;
1661
1662         if ((in_8(gpio_reg + 0x9) & 0x02) == 0) {
1663                 spin_lock_irqsave(&pmu_lock, flags);
1664                 if (gpio_irq_enabled > 0) {
1665                         disable_irq_nosync(gpio_irq);
1666                         gpio_irq_enabled = 0;
1667                 }
1668                 pmu_irq_stats[1]++;
1669                 adb_int_pending = 1;
1670                 spin_unlock_irqrestore(&pmu_lock, flags);
1671                 via_pmu_interrupt(0, NULL, NULL);
1672                 return IRQ_HANDLED;
1673         }
1674         return IRQ_NONE;
1675 }
1676
1677 #ifdef CONFIG_PMAC_BACKLIGHT
1678 static int backlight_to_bright[] = {
1679         0x7f, 0x46, 0x42, 0x3e, 0x3a, 0x36, 0x32, 0x2e,
1680         0x2a, 0x26, 0x22, 0x1e, 0x1a, 0x16, 0x12, 0x0e
1681 };
1682
1683 static int
1684 pmu_set_backlight_enable(int on, int level, void* data)
1685 {
1686         struct adb_request req;
1687
1688         if (vias == NULL)
1689                 return -ENODEV;
1690
1691         if (on) {
1692                 pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT,
1693                             backlight_to_bright[level]);
1694                 pmu_wait_complete(&req);
1695         }
1696         pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
1697                     PMU_POW_BACKLIGHT | (on ? PMU_POW_ON : PMU_POW_OFF));
1698         pmu_wait_complete(&req);
1699
1700         return 0;
1701 }
1702
1703 static void
1704 pmu_bright_complete(struct adb_request *req)
1705 {
1706         if (req == &bright_req_1)
1707                 clear_bit(1, &async_req_locks);
1708         if (req == &bright_req_2)
1709                 clear_bit(2, &async_req_locks);
1710 }
1711
1712 static int
1713 pmu_set_backlight_level(int level, void* data)
1714 {
1715         if (vias == NULL)
1716                 return -ENODEV;
1717
1718         if (test_and_set_bit(1, &async_req_locks))
1719                 return -EAGAIN;
1720         pmu_request(&bright_req_1, pmu_bright_complete, 2, PMU_BACKLIGHT_BRIGHT,
1721                 backlight_to_bright[level]);
1722         if (test_and_set_bit(2, &async_req_locks))
1723                 return -EAGAIN;
1724         pmu_request(&bright_req_2, pmu_bright_complete, 2, PMU_POWER_CTRL,
1725                     PMU_POW_BACKLIGHT | (level > BACKLIGHT_OFF ?
1726                                          PMU_POW_ON : PMU_POW_OFF));
1727
1728         return 0;
1729 }
1730 #endif /* CONFIG_PMAC_BACKLIGHT */
1731
1732 void
1733 pmu_enable_irled(int on)
1734 {
1735         struct adb_request req;
1736
1737         if (vias == NULL)
1738                 return ;
1739         if (pmu_kind == PMU_KEYLARGO_BASED)
1740                 return ;
1741
1742         pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
1743             (on ? PMU_POW_ON : PMU_POW_OFF));
1744         pmu_wait_complete(&req);
1745 }
1746
1747 void
1748 pmu_restart(void)
1749 {
1750         struct adb_request req;
1751
1752         if (via == NULL)
1753                 return;
1754
1755         local_irq_disable();
1756
1757         drop_interrupts = 1;
1758
1759         if (pmu_kind != PMU_KEYLARGO_BASED) {
1760                 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1761                                                 PMU_INT_TICK );
1762                 while(!req.complete)
1763                         pmu_poll();
1764         }
1765
1766         pmu_request(&req, NULL, 1, PMU_RESET);
1767         pmu_wait_complete(&req);
1768         for (;;)
1769                 ;
1770 }
1771
1772 void
1773 pmu_shutdown(void)
1774 {
1775         struct adb_request req;
1776
1777         if (via == NULL)
1778                 return;
1779
1780         local_irq_disable();
1781
1782         drop_interrupts = 1;
1783
1784         if (pmu_kind != PMU_KEYLARGO_BASED) {
1785                 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1786                                                 PMU_INT_TICK );
1787                 pmu_wait_complete(&req);
1788         } else {
1789                 /* Disable server mode on shutdown or we'll just
1790                  * wake up again
1791                  */
1792                 pmu_set_server_mode(0);
1793         }
1794
1795         pmu_request(&req, NULL, 5, PMU_SHUTDOWN,
1796                     'M', 'A', 'T', 'T');
1797         pmu_wait_complete(&req);
1798         for (;;)
1799                 ;
1800 }
1801
1802 int
1803 pmu_present(void)
1804 {
1805         return via != 0;
1806 }
1807
1808 struct pmu_i2c_hdr {
1809         u8      bus;
1810         u8      mode;
1811         u8      bus2;
1812         u8      address;
1813         u8      sub_addr;
1814         u8      comb_addr;
1815         u8      count;
1816 };
1817
1818 int
1819 pmu_i2c_combined_read(int bus, int addr, int subaddr,  u8* data, int len)
1820 {
1821         struct adb_request      req;
1822         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1823         int retry;
1824         int rc;
1825
1826         for (retry=0; retry<16; retry++) {
1827                 memset(&req, 0, sizeof(req));
1828
1829                 hdr->bus = bus;
1830                 hdr->address = addr & 0xfe;
1831                 hdr->mode = PMU_I2C_MODE_COMBINED;
1832                 hdr->bus2 = 0;
1833                 hdr->sub_addr = subaddr;
1834                 hdr->comb_addr = addr | 1;
1835                 hdr->count = len;
1836
1837                 req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
1838                 req.reply_expected = 0;
1839                 req.reply_len = 0;
1840                 req.data[0] = PMU_I2C_CMD;
1841                 req.reply[0] = 0xff;
1842                 rc = pmu_queue_request(&req);
1843                 if (rc)
1844                         return rc;
1845                 while(!req.complete)
1846                         pmu_poll();
1847                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1848                         break;
1849                 mdelay(15);
1850         }
1851         if (req.reply[0] != PMU_I2C_STATUS_OK)
1852                 return -1;
1853
1854         for (retry=0; retry<16; retry++) {
1855                 memset(&req, 0, sizeof(req));
1856
1857                 mdelay(15);
1858
1859                 hdr->bus = PMU_I2C_BUS_STATUS;
1860                 req.reply[0] = 0xff;
1861
1862                 req.nbytes = 2;
1863                 req.reply_expected = 0;
1864                 req.reply_len = 0;
1865                 req.data[0] = PMU_I2C_CMD;
1866                 rc = pmu_queue_request(&req);
1867                 if (rc)
1868                         return rc;
1869                 while(!req.complete)
1870                         pmu_poll();
1871                 if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
1872                         memcpy(data, &req.reply[1], req.reply_len - 1);
1873                         return req.reply_len - 1;
1874                 }
1875         }
1876         return -1;
1877 }
1878
1879 int
1880 pmu_i2c_stdsub_write(int bus, int addr, int subaddr,  u8* data, int len)
1881 {
1882         struct adb_request      req;
1883         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1884         int retry;
1885         int rc;
1886
1887         for (retry=0; retry<16; retry++) {
1888                 memset(&req, 0, sizeof(req));
1889
1890                 hdr->bus = bus;
1891                 hdr->address = addr & 0xfe;
1892                 hdr->mode = PMU_I2C_MODE_STDSUB;
1893                 hdr->bus2 = 0;
1894                 hdr->sub_addr = subaddr;
1895                 hdr->comb_addr = addr & 0xfe;
1896                 hdr->count = len;
1897
1898                 req.data[0] = PMU_I2C_CMD;
1899                 memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
1900                 req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
1901                 req.reply_expected = 0;
1902                 req.reply_len = 0;
1903                 req.reply[0] = 0xff;
1904                 rc = pmu_queue_request(&req);
1905                 if (rc)
1906                         return rc;
1907                 while(!req.complete)
1908                         pmu_poll();
1909                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1910                         break;
1911                 mdelay(15);
1912         }
1913         if (req.reply[0] != PMU_I2C_STATUS_OK)
1914                 return -1;
1915
1916         for (retry=0; retry<16; retry++) {
1917                 memset(&req, 0, sizeof(req));
1918
1919                 mdelay(15);
1920
1921                 hdr->bus = PMU_I2C_BUS_STATUS;
1922                 req.reply[0] = 0xff;
1923
1924                 req.nbytes = 2;
1925                 req.reply_expected = 0;
1926                 req.reply_len = 0;
1927                 req.data[0] = PMU_I2C_CMD;
1928                 rc = pmu_queue_request(&req);
1929                 if (rc)
1930                         return rc;
1931                 while(!req.complete)
1932                         pmu_poll();
1933                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1934                         return len;
1935         }
1936         return -1;
1937 }
1938
1939 int
1940 pmu_i2c_simple_read(int bus, int addr,  u8* data, int len)
1941 {
1942         struct adb_request      req;
1943         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1944         int retry;
1945         int rc;
1946
1947         for (retry=0; retry<16; retry++) {
1948                 memset(&req, 0, sizeof(req));
1949
1950                 hdr->bus = bus;
1951                 hdr->address = addr | 1;
1952                 hdr->mode = PMU_I2C_MODE_SIMPLE;
1953                 hdr->bus2 = 0;
1954                 hdr->sub_addr = 0;
1955                 hdr->comb_addr = 0;
1956                 hdr->count = len;
1957
1958                 req.data[0] = PMU_I2C_CMD;
1959                 req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
1960                 req.reply_expected = 0;
1961                 req.reply_len = 0;
1962                 req.reply[0] = 0xff;
1963                 rc = pmu_queue_request(&req);
1964                 if (rc)
1965                         return rc;
1966                 while(!req.complete)
1967                         pmu_poll();
1968                 if (req.reply[0] == PMU_I2C_STATUS_OK)
1969                         break;
1970                 mdelay(15);
1971         }
1972         if (req.reply[0] != PMU_I2C_STATUS_OK)
1973                 return -1;
1974
1975         for (retry=0; retry<16; retry++) {
1976                 memset(&req, 0, sizeof(req));
1977
1978                 mdelay(15);
1979
1980                 hdr->bus = PMU_I2C_BUS_STATUS;
1981                 req.reply[0] = 0xff;
1982
1983                 req.nbytes = 2;
1984                 req.reply_expected = 0;
1985                 req.reply_len = 0;
1986                 req.data[0] = PMU_I2C_CMD;
1987                 rc = pmu_queue_request(&req);
1988                 if (rc)
1989                         return rc;
1990                 while(!req.complete)
1991                         pmu_poll();
1992                 if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
1993                         memcpy(data, &req.reply[1], req.reply_len - 1);
1994                         return req.reply_len - 1;
1995                 }
1996         }
1997         return -1;
1998 }
1999
2000 int
2001 pmu_i2c_simple_write(int bus, int addr,  u8* data, int len)
2002 {
2003         struct adb_request      req;
2004         struct pmu_i2c_hdr      *hdr = (struct pmu_i2c_hdr *)&req.data[1];
2005         int retry;
2006         int rc;
2007
2008         for (retry=0; retry<16; retry++) {
2009                 memset(&req, 0, sizeof(req));
2010
2011                 hdr->bus = bus;
2012                 hdr->address = addr & 0xfe;
2013                 hdr->mode = PMU_I2C_MODE_SIMPLE;
2014                 hdr->bus2 = 0;
2015                 hdr->sub_addr = 0;
2016                 hdr->comb_addr = 0;
2017                 hdr->count = len;
2018
2019                 req.data[0] = PMU_I2C_CMD;
2020                 memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
2021                 req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
2022                 req.reply_expected = 0;
2023                 req.reply_len = 0;
2024                 req.reply[0] = 0xff;
2025                 rc = pmu_queue_request(&req);
2026                 if (rc)
2027                         return rc;
2028                 while(!req.complete)
2029                         pmu_poll();
2030                 if (req.reply[0] == PMU_I2C_STATUS_OK)
2031                         break;
2032                 mdelay(15);
2033         }
2034         if (req.reply[0] != PMU_I2C_STATUS_OK)
2035                 return -1;
2036
2037         for (retry=0; retry<16; retry++) {
2038                 memset(&req, 0, sizeof(req));
2039
2040                 mdelay(15);
2041
2042                 hdr->bus = PMU_I2C_BUS_STATUS;
2043                 req.reply[0] = 0xff;
2044
2045                 req.nbytes = 2;
2046                 req.reply_expected = 0;
2047                 req.reply_len = 0;
2048                 req.data[0] = PMU_I2C_CMD;
2049                 rc = pmu_queue_request(&req);
2050                 if (rc)
2051                         return rc;
2052                 while(!req.complete)
2053                         pmu_poll();
2054                 if (req.reply[0] == PMU_I2C_STATUS_OK)
2055                         return len;
2056         }
2057         return -1;
2058 }
2059
2060 #ifdef CONFIG_PM
2061
2062 static LIST_HEAD(sleep_notifiers);
2063
2064 int
2065 pmu_register_sleep_notifier(struct pmu_sleep_notifier *n)
2066 {
2067         struct list_head *list;
2068         struct pmu_sleep_notifier *notifier;
2069
2070         for (list = sleep_notifiers.next; list != &sleep_notifiers;
2071              list = list->next) {
2072                 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2073                 if (n->priority > notifier->priority)
2074                         break;
2075         }
2076         __list_add(&n->list, list->prev, list);
2077         return 0;
2078 }
2079 EXPORT_SYMBOL(pmu_register_sleep_notifier);
2080
2081 int
2082 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n)
2083 {
2084         if (n->list.next == 0)
2085                 return -ENOENT;
2086         list_del(&n->list);
2087         n->list.next = NULL;
2088         return 0;
2089 }
2090 EXPORT_SYMBOL(pmu_unregister_sleep_notifier);
2091 #endif /* CONFIG_PM */
2092
2093 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2094
2095 /* Sleep is broadcast last-to-first */
2096 static int
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
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
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
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
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
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
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];
2298
2299 static void
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
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
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
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
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
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
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         hid0 = mfspr(SPRN_HID0);
2696         hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
2697         mtspr(SPRN_HID0, hid0);
2698         mtmsr(mfmsr() | 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 #endif /* CONFIG_PM && CONFIG_PPC32 */
2719
2720 /*
2721  * Support for /dev/pmu device
2722  */
2723 #define RB_SIZE         0x10
2724 struct pmu_private {
2725         struct list_head list;
2726         int     rb_get;
2727         int     rb_put;
2728         struct rb_entry {
2729                 unsigned short len;
2730                 unsigned char data[16];
2731         }       rb_buf[RB_SIZE];
2732         wait_queue_head_t wait;
2733         spinlock_t lock;
2734 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2735         int     backlight_locker;
2736 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2737 };
2738
2739 static LIST_HEAD(all_pmu_pvt);
2740 static DEFINE_SPINLOCK(all_pvt_lock);
2741
2742 static void
2743 pmu_pass_intr(unsigned char *data, int len)
2744 {
2745         struct pmu_private *pp;
2746         struct list_head *list;
2747         int i;
2748         unsigned long flags;
2749
2750         if (len > sizeof(pp->rb_buf[0].data))
2751                 len = sizeof(pp->rb_buf[0].data);
2752         spin_lock_irqsave(&all_pvt_lock, flags);
2753         for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) {
2754                 pp = list_entry(list, struct pmu_private, list);
2755                 spin_lock(&pp->lock);
2756                 i = pp->rb_put + 1;
2757                 if (i >= RB_SIZE)
2758                         i = 0;
2759                 if (i != pp->rb_get) {
2760                         struct rb_entry *rp = &pp->rb_buf[pp->rb_put];
2761                         rp->len = len;
2762                         memcpy(rp->data, data, len);
2763                         pp->rb_put = i;
2764                         wake_up_interruptible(&pp->wait);
2765                 }
2766                 spin_unlock(&pp->lock);
2767         }
2768         spin_unlock_irqrestore(&all_pvt_lock, flags);
2769 }
2770
2771 static int
2772 pmu_open(struct inode *inode, struct file *file)
2773 {
2774         struct pmu_private *pp;
2775         unsigned long flags;
2776
2777         pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
2778         if (pp == 0)
2779                 return -ENOMEM;
2780         pp->rb_get = pp->rb_put = 0;
2781         spin_lock_init(&pp->lock);
2782         init_waitqueue_head(&pp->wait);
2783         spin_lock_irqsave(&all_pvt_lock, flags);
2784 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2785         pp->backlight_locker = 0;
2786 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2787         list_add(&pp->list, &all_pmu_pvt);
2788         spin_unlock_irqrestore(&all_pvt_lock, flags);
2789         file->private_data = pp;
2790         return 0;
2791 }
2792
2793 static ssize_t
2794 pmu_read(struct file *file, char __user *buf,
2795                         size_t count, loff_t *ppos)
2796 {
2797         struct pmu_private *pp = file->private_data;
2798         DECLARE_WAITQUEUE(wait, current);
2799         unsigned long flags;
2800         int ret = 0;
2801
2802         if (count < 1 || pp == 0)
2803                 return -EINVAL;
2804         if (!access_ok(VERIFY_WRITE, buf, count))
2805                 return -EFAULT;
2806
2807         spin_lock_irqsave(&pp->lock, flags);
2808         add_wait_queue(&pp->wait, &wait);
2809         current->state = TASK_INTERRUPTIBLE;
2810
2811         for (;;) {
2812                 ret = -EAGAIN;
2813                 if (pp->rb_get != pp->rb_put) {
2814                         int i = pp->rb_get;
2815                         struct rb_entry *rp = &pp->rb_buf[i];
2816                         ret = rp->len;
2817                         spin_unlock_irqrestore(&pp->lock, flags);
2818                         if (ret > count)
2819                                 ret = count;
2820                         if (ret > 0 && copy_to_user(buf, rp->data, ret))
2821                                 ret = -EFAULT;
2822                         if (++i >= RB_SIZE)
2823                                 i = 0;
2824                         spin_lock_irqsave(&pp->lock, flags);
2825                         pp->rb_get = i;
2826                 }
2827                 if (ret >= 0)
2828                         break;
2829                 if (file->f_flags & O_NONBLOCK)
2830                         break;
2831                 ret = -ERESTARTSYS;
2832                 if (signal_pending(current))
2833                         break;
2834                 spin_unlock_irqrestore(&pp->lock, flags);
2835                 schedule();
2836                 spin_lock_irqsave(&pp->lock, flags);
2837         }
2838         current->state = TASK_RUNNING;
2839         remove_wait_queue(&pp->wait, &wait);
2840         spin_unlock_irqrestore(&pp->lock, flags);
2841
2842         return ret;
2843 }
2844
2845 static ssize_t
2846 pmu_write(struct file *file, const char __user *buf,
2847                          size_t count, loff_t *ppos)
2848 {
2849         return 0;
2850 }
2851
2852 static unsigned int
2853 pmu_fpoll(struct file *filp, poll_table *wait)
2854 {
2855         struct pmu_private *pp = filp->private_data;
2856         unsigned int mask = 0;
2857         unsigned long flags;
2858
2859         if (pp == 0)
2860                 return 0;
2861         poll_wait(filp, &pp->wait, wait);
2862         spin_lock_irqsave(&pp->lock, flags);
2863         if (pp->rb_get != pp->rb_put)
2864                 mask |= POLLIN;
2865         spin_unlock_irqrestore(&pp->lock, flags);
2866         return mask;
2867 }
2868
2869 static int
2870 pmu_release(struct inode *inode, struct file *file)
2871 {
2872         struct pmu_private *pp = file->private_data;
2873         unsigned long flags;
2874
2875         lock_kernel();
2876         if (pp != 0) {
2877                 file->private_data = NULL;
2878                 spin_lock_irqsave(&all_pvt_lock, flags);
2879                 list_del(&pp->list);
2880                 spin_unlock_irqrestore(&all_pvt_lock, flags);
2881 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2882                 if (pp->backlight_locker) {
2883                         spin_lock_irqsave(&pmu_lock, flags);
2884                         disable_kernel_backlight--;
2885                         spin_unlock_irqrestore(&pmu_lock, flags);
2886                 }
2887 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2888                 kfree(pp);
2889         }
2890         unlock_kernel();
2891         return 0;
2892 }
2893
2894 static int
2895 pmu_ioctl(struct inode * inode, struct file *filp,
2896                      u_int cmd, u_long arg)
2897 {
2898         __u32 __user *argp = (__u32 __user *)arg;
2899         int error = -EINVAL;
2900
2901         switch (cmd) {
2902 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2903         case PMU_IOC_SLEEP:
2904                 if (!capable(CAP_SYS_ADMIN))
2905                         return -EACCES;
2906                 if (sleep_in_progress)
2907                         return -EBUSY;
2908                 sleep_in_progress = 1;
2909                 switch (pmu_kind) {
2910                 case PMU_OHARE_BASED:
2911                         error = powerbook_sleep_3400();
2912                         break;
2913                 case PMU_HEATHROW_BASED:
2914                 case PMU_PADDINGTON_BASED:
2915                         error = powerbook_sleep_grackle();
2916                         break;
2917                 case PMU_KEYLARGO_BASED:
2918                         error = powerbook_sleep_Core99();
2919                         break;
2920                 default:
2921                         error = -ENOSYS;
2922                 }
2923                 sleep_in_progress = 0;
2924                 break;
2925         case PMU_IOC_CAN_SLEEP:
2926                 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0)
2927                         return put_user(0, argp);
2928                 else
2929                         return put_user(1, argp);
2930 #endif /* CONFIG_PM && CONFIG_PPC32 */
2931
2932 #ifdef CONFIG_PMAC_BACKLIGHT
2933         /* Backlight should have its own device or go via
2934          * the fbdev
2935          */
2936         case PMU_IOC_GET_BACKLIGHT:
2937                 if (sleep_in_progress)
2938                         return -EBUSY;
2939                 error = get_backlight_level();
2940                 if (error < 0)
2941                         return error;
2942                 return put_user(error, argp);
2943         case PMU_IOC_SET_BACKLIGHT:
2944         {
2945                 __u32 value;
2946                 if (sleep_in_progress)
2947                         return -EBUSY;
2948                 error = get_user(value, argp);
2949                 if (!error)
2950                         error = set_backlight_level(value);
2951                 break;
2952         }
2953 #ifdef CONFIG_INPUT_ADBHID
2954         case PMU_IOC_GRAB_BACKLIGHT: {
2955                 struct pmu_private *pp = filp->private_data;
2956                 unsigned long flags;
2957
2958                 if (pp->backlight_locker)
2959                         return 0;
2960                 pp->backlight_locker = 1;
2961                 spin_lock_irqsave(&pmu_lock, flags);
2962                 disable_kernel_backlight++;
2963                 spin_unlock_irqrestore(&pmu_lock, flags);
2964                 return 0;
2965         }
2966 #endif /* CONFIG_INPUT_ADBHID */
2967 #endif /* CONFIG_PMAC_BACKLIGHT */
2968         case PMU_IOC_GET_MODEL:
2969                 return put_user(pmu_kind, argp);
2970         case PMU_IOC_HAS_ADB:
2971                 return put_user(pmu_has_adb, argp);
2972         }
2973         return error;
2974 }
2975
2976 static struct file_operations pmu_device_fops = {
2977         .read           = pmu_read,
2978         .write          = pmu_write,
2979         .poll           = pmu_fpoll,
2980         .ioctl          = pmu_ioctl,
2981         .open           = pmu_open,
2982         .release        = pmu_release,
2983 };
2984
2985 static struct miscdevice pmu_device = {
2986         PMU_MINOR, "pmu", &pmu_device_fops
2987 };
2988
2989 static int pmu_device_init(void)
2990 {
2991         if (!via)
2992                 return 0;
2993         if (misc_register(&pmu_device) < 0)
2994                 printk(KERN_ERR "via-pmu: cannot register misc device.\n");
2995         return 0;
2996 }
2997 device_initcall(pmu_device_init);
2998
2999
3000 #ifdef DEBUG_SLEEP
3001 static inline void
3002 polled_handshake(volatile unsigned char __iomem *via)
3003 {
3004         via[B] &= ~TREQ; eieio();
3005         while ((via[B] & TACK) != 0)
3006                 ;
3007         via[B] |= TREQ; eieio();
3008         while ((via[B] & TACK) == 0)
3009                 ;
3010 }
3011
3012 static inline void
3013 polled_send_byte(volatile unsigned char __iomem *via, int x)
3014 {
3015         via[ACR] |= SR_OUT | SR_EXT; eieio();
3016         via[SR] = x; eieio();
3017         polled_handshake(via);
3018 }
3019
3020 static inline int
3021 polled_recv_byte(volatile unsigned char __iomem *via)
3022 {
3023         int x;
3024
3025         via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio();
3026         x = via[SR]; eieio();
3027         polled_handshake(via);
3028         x = via[SR]; eieio();
3029         return x;
3030 }
3031
3032 int
3033 pmu_polled_request(struct adb_request *req)
3034 {
3035         unsigned long flags;
3036         int i, l, c;
3037         volatile unsigned char __iomem *v = via;
3038
3039         req->complete = 1;
3040         c = req->data[0];
3041         l = pmu_data_len[c][0];
3042         if (l >= 0 && req->nbytes != l + 1)
3043                 return -EINVAL;
3044
3045         local_irq_save(flags);
3046         while (pmu_state != idle)
3047                 pmu_poll();
3048
3049         while ((via[B] & TACK) == 0)
3050                 ;
3051         polled_send_byte(v, c);
3052         if (l < 0) {
3053                 l = req->nbytes - 1;
3054                 polled_send_byte(v, l);
3055         }
3056         for (i = 1; i <= l; ++i)
3057                 polled_send_byte(v, req->data[i]);
3058
3059         l = pmu_data_len[c][1];
3060         if (l < 0)
3061                 l = polled_recv_byte(v);
3062         for (i = 0; i < l; ++i)
3063                 req->reply[i + req->reply_len] = polled_recv_byte(v);
3064
3065         if (req->done)
3066                 (*req->done)(req);
3067
3068         local_irq_restore(flags);
3069         return 0;
3070 }
3071 #endif /* DEBUG_SLEEP */
3072
3073
3074 /* FIXME: This is a temporary set of callbacks to enable us
3075  * to do suspend-to-disk.
3076  */
3077
3078 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
3079
3080 static int pmu_sys_suspended = 0;
3081
3082 static int pmu_sys_suspend(struct sys_device *sysdev, pm_message_t state)
3083 {
3084         if (state.event != PM_EVENT_SUSPEND || pmu_sys_suspended)
3085                 return 0;
3086
3087         /* Suspend PMU event interrupts */
3088         pmu_suspend();
3089
3090         pmu_sys_suspended = 1;
3091         return 0;
3092 }
3093
3094 static int pmu_sys_resume(struct sys_device *sysdev)
3095 {
3096         struct adb_request req;
3097
3098         if (!pmu_sys_suspended)
3099                 return 0;
3100
3101         /* Tell PMU we are ready */
3102         pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
3103         pmu_wait_complete(&req);
3104
3105         /* Resume PMU event interrupts */
3106         pmu_resume();
3107
3108         pmu_sys_suspended = 0;
3109
3110         return 0;
3111 }
3112
3113 #endif /* CONFIG_PM && CONFIG_PPC32 */
3114
3115 static struct sysdev_class pmu_sysclass = {
3116         set_kset_name("pmu"),
3117 };
3118
3119 static struct sys_device device_pmu = {
3120         .id             = 0,
3121         .cls            = &pmu_sysclass,
3122 };
3123
3124 static struct sysdev_driver driver_pmu = {
3125 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
3126         .suspend        = &pmu_sys_suspend,
3127         .resume         = &pmu_sys_resume,
3128 #endif /* CONFIG_PM && CONFIG_PPC32 */
3129 };
3130
3131 static int __init init_pmu_sysfs(void)
3132 {
3133         int rc;
3134
3135         rc = sysdev_class_register(&pmu_sysclass);
3136         if (rc) {
3137                 printk(KERN_ERR "Failed registering PMU sys class\n");
3138                 return -ENODEV;
3139         }
3140         rc = sysdev_register(&device_pmu);
3141         if (rc) {
3142                 printk(KERN_ERR "Failed registering PMU sys device\n");
3143                 return -ENODEV;
3144         }
3145         rc = sysdev_driver_register(&pmu_sysclass, &driver_pmu);
3146         if (rc) {
3147                 printk(KERN_ERR "Failed registering PMU sys driver\n");
3148                 return -ENODEV;
3149         }
3150         return 0;
3151 }
3152
3153 subsys_initcall(init_pmu_sysfs);
3154
3155 EXPORT_SYMBOL(pmu_request);
3156 EXPORT_SYMBOL(pmu_poll);
3157 EXPORT_SYMBOL(pmu_poll_adb);
3158 EXPORT_SYMBOL(pmu_wait_complete);
3159 EXPORT_SYMBOL(pmu_suspend);
3160 EXPORT_SYMBOL(pmu_resume);
3161 EXPORT_SYMBOL(pmu_unlock);
3162 EXPORT_SYMBOL(pmu_i2c_combined_read);
3163 EXPORT_SYMBOL(pmu_i2c_stdsub_write);
3164 EXPORT_SYMBOL(pmu_i2c_simple_read);
3165 EXPORT_SYMBOL(pmu_i2c_simple_write);
3166 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
3167 EXPORT_SYMBOL(pmu_enable_irled);
3168 EXPORT_SYMBOL(pmu_battery_count);
3169 EXPORT_SYMBOL(pmu_batteries);
3170 EXPORT_SYMBOL(pmu_power_flags);
3171 #endif /* CONFIG_PM && CONFIG_PPC32 */
3172