2 * Device driver for the via-pmu on Apple Powermacs.
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.
11 * Copyright (C) 1998 Paul Mackerras and Fabio Riccardi.
12 * Copyright (C) 2001-2002 Benjamin Herrenschmidt
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
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>
42 #include <linux/proc_fs.h>
43 #include <linux/init.h>
44 #include <linux/interrupt.h>
45 #include <linux/device.h>
46 #include <linux/suspend.h>
47 #include <linux/syscalls.h>
48 #include <linux/cpu.h>
50 #include <asm/machdep.h>
52 #include <asm/pgtable.h>
53 #include <asm/system.h>
54 #include <asm/sections.h>
56 #include <asm/pmac_feature.h>
57 #include <asm/uaccess.h>
58 #include <asm/mmu_context.h>
59 #include <asm/cputable.h>
61 #ifdef CONFIG_PMAC_BACKLIGHT
62 #include <asm/backlight.h>
65 /* Some compile options */
66 #undef SUSPEND_USES_PMU
68 #undef HACKED_PCI_SAVE
70 /* Misc minor number allocated for /dev/pmu */
73 /* How many iterations between battery polls */
74 #define BATTERY_POLLING_COUNT 2
76 static volatile unsigned char __iomem *via;
78 /* VIA registers - spaced 0x200 bytes apart */
79 #define RS 0x200 /* skip between registers */
80 #define B 0 /* B-side data */
81 #define A RS /* A-side data */
82 #define DIRB (2*RS) /* B-side direction (1=output) */
83 #define DIRA (3*RS) /* A-side direction (1=output) */
84 #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
85 #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
86 #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
87 #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
88 #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
89 #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
90 #define SR (10*RS) /* Shift register */
91 #define ACR (11*RS) /* Auxiliary control register */
92 #define PCR (12*RS) /* Peripheral control register */
93 #define IFR (13*RS) /* Interrupt flag register */
94 #define IER (14*RS) /* Interrupt enable register */
95 #define ANH (15*RS) /* A-side data, no handshake */
97 /* Bits in B data register: both active low */
98 #define TACK 0x08 /* Transfer acknowledge (input) */
99 #define TREQ 0x10 /* Transfer request (output) */
102 #define SR_CTRL 0x1c /* Shift register control bits */
103 #define SR_EXT 0x0c /* Shift on external clock */
104 #define SR_OUT 0x10 /* Shift out if 1 */
106 /* Bits in IFR and IER */
107 #define IER_SET 0x80 /* set bits in IER */
108 #define IER_CLR 0 /* clear bits in IER */
109 #define SR_INT 0x04 /* Shift register full/empty */
111 #define CB1_INT 0x10 /* transition on CB1 input */
113 static volatile enum pmu_state {
122 static volatile enum int_data_state {
127 } int_data_state[2] = { int_data_empty, int_data_empty };
129 static struct adb_request *current_req;
130 static struct adb_request *last_req;
131 static struct adb_request *req_awaiting_reply;
132 static unsigned char interrupt_data[2][32];
133 static int interrupt_data_len[2];
134 static int int_data_last;
135 static unsigned char *reply_ptr;
136 static int data_index;
138 static volatile int adb_int_pending;
139 static volatile int disable_poll;
140 static struct adb_request bright_req_1, bright_req_2;
141 static struct device_node *vias;
142 static int pmu_kind = PMU_UNKNOWN;
143 static int pmu_fully_inited = 0;
144 static int pmu_has_adb;
145 static unsigned char __iomem *gpio_reg = NULL;
146 static int gpio_irq = -1;
147 static int gpio_irq_enabled = -1;
148 static volatile int pmu_suspended = 0;
149 static spinlock_t pmu_lock;
150 static u8 pmu_intr_mask;
151 static int pmu_version;
152 static int drop_interrupts;
153 #ifdef CONFIG_PMAC_PBOOK
154 static int option_lid_wakeup = 1;
155 static int sleep_in_progress;
156 #endif /* CONFIG_PMAC_PBOOK */
157 static unsigned long async_req_locks;
158 static unsigned int pmu_irq_stats[11];
160 static struct proc_dir_entry *proc_pmu_root;
161 static struct proc_dir_entry *proc_pmu_info;
162 static struct proc_dir_entry *proc_pmu_irqstats;
163 static struct proc_dir_entry *proc_pmu_options;
164 static int option_server_mode;
166 #ifdef CONFIG_PMAC_PBOOK
167 int pmu_battery_count;
169 unsigned int pmu_power_flags;
170 struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
171 static int query_batt_timer = BATTERY_POLLING_COUNT;
172 static struct adb_request batt_req;
173 static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES];
174 #endif /* CONFIG_PMAC_PBOOK */
176 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
177 extern int disable_kernel_backlight;
178 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
182 struct notifier_block *sleep_notifier_list;
185 static int adb_dev_map = 0;
186 static int pmu_adb_flags;
188 static int pmu_probe(void);
189 static int pmu_init(void);
190 static int pmu_send_request(struct adb_request *req, int sync);
191 static int pmu_adb_autopoll(int devs);
192 static int pmu_adb_reset_bus(void);
193 #endif /* CONFIG_ADB */
195 static int init_pmu(void);
196 static int pmu_queue_request(struct adb_request *req);
197 static void pmu_start(void);
198 static irqreturn_t via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs);
199 static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs);
200 static int proc_get_info(char *page, char **start, off_t off,
201 int count, int *eof, void *data);
202 static int proc_get_irqstats(char *page, char **start, off_t off,
203 int count, int *eof, void *data);
204 #ifdef CONFIG_PMAC_BACKLIGHT
205 static int pmu_set_backlight_level(int level, void* data);
206 static int pmu_set_backlight_enable(int on, int level, void* data);
207 #endif /* CONFIG_PMAC_BACKLIGHT */
208 #ifdef CONFIG_PMAC_PBOOK
209 static void pmu_pass_intr(unsigned char *data, int len);
210 static int proc_get_batt(char *page, char **start, off_t off,
211 int count, int *eof, void *data);
212 #endif /* CONFIG_PMAC_PBOOK */
213 static int proc_read_options(char *page, char **start, off_t off,
214 int count, int *eof, void *data);
215 static int proc_write_options(struct file *file, const char __user *buffer,
216 unsigned long count, void *data);
219 struct adb_driver via_pmu_driver = {
228 #endif /* CONFIG_ADB */
230 extern void low_sleep_handler(void);
231 extern void enable_kernel_altivec(void);
232 extern void enable_kernel_fp(void);
235 int pmu_polled_request(struct adb_request *req);
236 int pmu_wink(struct adb_request *req);
240 * This table indicates for each PMU opcode:
241 * - the number of data bytes to be sent with the command, or -1
242 * if a length byte should be sent,
243 * - the number of response bytes which the PMU will return, or
244 * -1 if it will send a length byte.
246 static const s8 pmu_data_len[256][2] __openfirmwaredata = {
247 /* 0 1 2 3 4 5 6 7 */
248 /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
249 /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
250 /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
251 /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
252 /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
253 /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
254 /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
255 /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
256 /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
257 /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
258 /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
259 /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
260 /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
261 /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
262 /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
263 /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
264 /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
265 /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
266 /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
267 /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
268 /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
269 /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
270 /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
271 /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
272 /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
273 /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
274 /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
275 /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
276 /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
277 /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
278 /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
279 /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
282 static char *pbook_type[] = {
284 "PowerBook 2400/3400/3500(G3)",
285 "PowerBook G3 Series",
290 #ifdef CONFIG_PMAC_BACKLIGHT
291 static struct backlight_controller pmu_backlight_controller = {
292 pmu_set_backlight_enable,
293 pmu_set_backlight_level
295 #endif /* CONFIG_PMAC_BACKLIGHT */
302 vias = find_devices("via-pmu");
306 printk(KERN_WARNING "Warning: only using 1st via-pmu\n");
308 if (vias->n_addrs < 1 || vias->n_intrs < 1) {
309 printk(KERN_ERR "via-pmu: %d addresses, %d interrupts!\n",
310 vias->n_addrs, vias->n_intrs);
311 if (vias->n_addrs < 1 || vias->n_intrs < 1)
315 spin_lock_init(&pmu_lock);
319 pmu_intr_mask = PMU_INT_PCEJECT |
324 if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0)
325 || device_is_compatible(vias->parent, "ohare")))
326 pmu_kind = PMU_OHARE_BASED;
327 else if (device_is_compatible(vias->parent, "paddington"))
328 pmu_kind = PMU_PADDINGTON_BASED;
329 else if (device_is_compatible(vias->parent, "heathrow"))
330 pmu_kind = PMU_HEATHROW_BASED;
331 else if (device_is_compatible(vias->parent, "Keylargo")
332 || device_is_compatible(vias->parent, "K2-Keylargo")) {
333 struct device_node *gpio, *gpiop;
335 pmu_kind = PMU_KEYLARGO_BASED;
336 pmu_has_adb = (find_type_devices("adb") != NULL);
337 pmu_intr_mask = PMU_INT_PCEJECT |
343 gpiop = find_devices("gpio");
344 if (gpiop && gpiop->n_addrs) {
345 gpio_reg = ioremap(gpiop->addrs->address, 0x10);
346 gpio = find_devices("extint-gpio1");
348 gpio = find_devices("pmu-interrupt");
349 if (gpio && gpio->parent == gpiop && gpio->n_intrs)
350 gpio_irq = gpio->intrs[0].line;
353 pmu_kind = PMU_UNKNOWN;
355 via = ioremap(vias->addrs->address, 0x2000);
357 out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
358 out_8(&via[IFR], 0x7f); /* clear IFR */
367 printk(KERN_INFO "PMU driver %d initialized for %s, firmware: %02x\n",
368 PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version);
371 sys_ctrler = SYS_CTRLER_PMU;
378 static int __openfirmware
381 return vias == NULL? -ENODEV: 0;
391 #endif /* CONFIG_ADB */
394 * We can't wait until pmu_init gets called, that happens too late.
395 * It happens after IDE and SCSI initialization, which can take a few
396 * seconds, and by that time the PMU could have given up on us and
398 * Thus this is called with arch_initcall rather than device_initcall.
400 static int __init via_pmu_start(void)
405 bright_req_1.complete = 1;
406 bright_req_2.complete = 1;
407 #ifdef CONFIG_PMAC_PBOOK
408 batt_req.complete = 1;
411 if (request_irq(vias->intrs[0].line, via_pmu_interrupt, 0, "VIA-PMU",
413 printk(KERN_ERR "VIA-PMU: can't get irq %d\n",
414 vias->intrs[0].line);
418 if (pmu_kind == PMU_KEYLARGO_BASED && gpio_irq != -1) {
419 if (request_irq(gpio_irq, gpio1_interrupt, 0, "GPIO1 ADB", (void *)0))
420 printk(KERN_ERR "pmu: can't get irq %d (GPIO1)\n", gpio_irq);
421 gpio_irq_enabled = 1;
424 /* Enable interrupts */
425 out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
427 pmu_fully_inited = 1;
429 /* Make sure PMU settle down before continuing. This is _very_ important
430 * since the IDE probe may shut interrupts down for quite a bit of time. If
431 * a PMU communication is pending while this happens, the PMU may timeout
432 * Not that on Core99 machines, the PMU keeps sending us environement
433 * messages, we should find a way to either fix IDE or make it call
434 * pmu_suspend() before masking interrupts. This can also happens while
435 * scolling with some fbdevs.
439 } while (pmu_state != idle);
444 arch_initcall(via_pmu_start);
447 * This has to be done after pci_init, which is a subsys_initcall.
449 static int __init via_pmu_dev_init(void)
455 request_OF_resource(vias, 0, NULL);
457 #ifdef CONFIG_PMAC_BACKLIGHT
458 /* Enable backlight */
459 register_backlight_controller(&pmu_backlight_controller, NULL, "pmu");
460 #endif /* CONFIG_PMAC_BACKLIGHT */
462 #ifdef CONFIG_PMAC_PBOOK
463 if (machine_is_compatible("AAPL,3400/2400") ||
464 machine_is_compatible("AAPL,3500")) {
465 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
466 NULL, PMAC_MB_INFO_MODEL, 0);
467 pmu_battery_count = 1;
468 if (mb == PMAC_TYPE_COMET)
469 pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
471 pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
472 } else if (machine_is_compatible("AAPL,PowerBook1998") ||
473 machine_is_compatible("PowerBook1,1")) {
474 pmu_battery_count = 2;
475 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
476 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
478 struct device_node* prim = find_devices("power-mgt");
479 u32 *prim_info = NULL;
481 prim_info = (u32 *)get_property(prim, "prim-info", NULL);
483 /* Other stuffs here yet unknown */
484 pmu_battery_count = (prim_info[6] >> 16) & 0xff;
485 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
486 if (pmu_battery_count > 1)
487 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
490 #endif /* CONFIG_PMAC_PBOOK */
491 /* Create /proc/pmu */
492 proc_pmu_root = proc_mkdir("pmu", NULL);
494 #ifdef CONFIG_PMAC_PBOOK
497 for (i=0; i<pmu_battery_count; i++) {
499 sprintf(title, "battery_%d", i);
500 proc_pmu_batt[i] = create_proc_read_entry(title, 0, proc_pmu_root,
501 proc_get_batt, (void *)i);
503 #endif /* CONFIG_PMAC_PBOOK */
505 proc_pmu_info = create_proc_read_entry("info", 0, proc_pmu_root,
506 proc_get_info, NULL);
507 proc_pmu_irqstats = create_proc_read_entry("interrupts", 0, proc_pmu_root,
508 proc_get_irqstats, NULL);
509 proc_pmu_options = create_proc_entry("options", 0600, proc_pmu_root);
510 if (proc_pmu_options) {
511 proc_pmu_options->nlink = 1;
512 proc_pmu_options->read_proc = proc_read_options;
513 proc_pmu_options->write_proc = proc_write_options;
519 device_initcall(via_pmu_dev_init);
521 static int __openfirmware
525 struct adb_request req;
527 out_8(&via[B], via[B] | TREQ); /* negate TREQ */
528 out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */
530 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
532 while (!req.complete) {
534 printk(KERN_ERR "init_pmu: no response from PMU\n");
541 /* ack all pending interrupts */
543 interrupt_data[0][0] = 1;
544 while (interrupt_data[0][0] || pmu_state != idle) {
546 printk(KERN_ERR "init_pmu: timed out acking intrs\n");
549 if (pmu_state == idle)
551 via_pmu_interrupt(0, NULL, NULL);
555 /* Tell PMU we are ready. */
556 if (pmu_kind == PMU_KEYLARGO_BASED) {
557 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
558 while (!req.complete)
562 /* Read PMU version */
563 pmu_request(&req, NULL, 1, PMU_GET_VERSION);
564 pmu_wait_complete(&req);
565 if (req.reply_len > 0)
566 pmu_version = req.reply[0];
568 /* Read server mode setting */
569 if (pmu_kind == PMU_KEYLARGO_BASED) {
570 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS,
571 PMU_PWR_GET_POWERUP_EVENTS);
572 pmu_wait_complete(&req);
573 if (req.reply_len == 2) {
574 if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT)
575 option_server_mode = 1;
576 printk(KERN_INFO "via-pmu: Server Mode is %s\n",
577 option_server_mode ? "enabled" : "disabled");
590 static inline void wakeup_decrementer(void)
592 set_dec(tb_ticks_per_jiffy);
593 /* No currently-supported powerbook has a 601,
594 * so use get_tbl, not native
596 last_jiffy_stamp(0) = tb_last_stamp = get_tbl();
600 static void pmu_set_server_mode(int server_mode)
602 struct adb_request req;
604 if (pmu_kind != PMU_KEYLARGO_BASED)
607 option_server_mode = server_mode;
608 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS);
609 pmu_wait_complete(&req);
610 if (req.reply_len < 2)
613 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
614 PMU_PWR_SET_POWERUP_EVENTS,
615 req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
617 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS,
618 PMU_PWR_CLR_POWERUP_EVENTS,
619 req.reply[0], PMU_PWR_WAKEUP_AC_INSERT);
620 pmu_wait_complete(&req);
623 #ifdef CONFIG_PMAC_PBOOK
625 /* This new version of the code for 2400/3400/3500 powerbooks
626 * is inspired from the implementation in gkrellm-pmu
629 done_battery_state_ohare(struct adb_request* req)
633 * 0x01 : AC indicator
635 * 0x04 : battery exist
638 * 0x20 : full charged
639 * 0x40 : pcharge reset
640 * 0x80 : battery exist
642 * [1][2] : battery voltage
643 * [3] : CPU temperature
644 * [4] : battery temperature
649 unsigned int bat_flags = PMU_BATT_TYPE_HOOPER;
650 long pcharge, charge, vb, vmax, lmax;
651 long vmax_charging, vmax_charged;
652 long amperage, voltage, time, max;
653 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
654 NULL, PMAC_MB_INFO_MODEL, 0);
656 if (req->reply[0] & 0x01)
657 pmu_power_flags |= PMU_PWR_AC_PRESENT;
659 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
661 if (mb == PMAC_TYPE_COMET) {
672 /* If battery installed */
673 if (req->reply[0] & 0x04) {
674 bat_flags |= PMU_BATT_PRESENT;
675 if (req->reply[0] & 0x02)
676 bat_flags |= PMU_BATT_CHARGING;
677 vb = (req->reply[1] << 8) | req->reply[2];
678 voltage = (vb * 265 + 72665) / 10;
679 amperage = req->reply[5];
680 if ((req->reply[0] & 0x01) == 0) {
682 vb += ((amperage - 200) * 15)/100;
683 } else if (req->reply[0] & 0x02) {
684 vb = (vb * 97) / 100;
685 vmax = vmax_charging;
687 charge = (100 * vb) / vmax;
688 if (req->reply[0] & 0x40) {
689 pcharge = (req->reply[6] << 8) + req->reply[7];
693 pcharge = 100 - pcharge / lmax;
694 if (pcharge < charge)
698 time = (charge * 16440) / amperage;
702 amperage = -amperage;
704 charge = max = amperage = voltage = time = 0;
706 pmu_batteries[pmu_cur_battery].flags = bat_flags;
707 pmu_batteries[pmu_cur_battery].charge = charge;
708 pmu_batteries[pmu_cur_battery].max_charge = max;
709 pmu_batteries[pmu_cur_battery].amperage = amperage;
710 pmu_batteries[pmu_cur_battery].voltage = voltage;
711 pmu_batteries[pmu_cur_battery].time_remaining = time;
713 clear_bit(0, &async_req_locks);
717 done_battery_state_smart(struct adb_request* req)
720 * [0] : format of this structure (known: 3,4,5)
733 * [4][5] : max charge
738 unsigned int bat_flags = PMU_BATT_TYPE_SMART;
740 unsigned int capa, max, voltage;
742 if (req->reply[1] & 0x01)
743 pmu_power_flags |= PMU_PWR_AC_PRESENT;
745 pmu_power_flags &= ~PMU_PWR_AC_PRESENT;
748 capa = max = amperage = voltage = 0;
750 if (req->reply[1] & 0x04) {
751 bat_flags |= PMU_BATT_PRESENT;
752 switch(req->reply[0]) {
754 case 4: capa = req->reply[2];
756 amperage = *((signed char *)&req->reply[4]);
757 voltage = req->reply[5];
759 case 5: capa = (req->reply[2] << 8) | req->reply[3];
760 max = (req->reply[4] << 8) | req->reply[5];
761 amperage = *((signed short *)&req->reply[6]);
762 voltage = (req->reply[8] << 8) | req->reply[9];
765 printk(KERN_WARNING "pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
766 req->reply_len, req->reply[0], req->reply[1], req->reply[2], req->reply[3]);
771 if ((req->reply[1] & 0x01) && (amperage > 0))
772 bat_flags |= PMU_BATT_CHARGING;
774 pmu_batteries[pmu_cur_battery].flags = bat_flags;
775 pmu_batteries[pmu_cur_battery].charge = capa;
776 pmu_batteries[pmu_cur_battery].max_charge = max;
777 pmu_batteries[pmu_cur_battery].amperage = amperage;
778 pmu_batteries[pmu_cur_battery].voltage = voltage;
780 if ((req->reply[1] & 0x01) && (amperage > 0))
781 pmu_batteries[pmu_cur_battery].time_remaining
782 = ((max-capa) * 3600) / amperage;
784 pmu_batteries[pmu_cur_battery].time_remaining
785 = (capa * 3600) / (-amperage);
787 pmu_batteries[pmu_cur_battery].time_remaining = 0;
789 pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count;
791 clear_bit(0, &async_req_locks);
795 query_battery_state(void)
797 if (test_and_set_bit(0, &async_req_locks))
799 if (pmu_kind == PMU_OHARE_BASED)
800 pmu_request(&batt_req, done_battery_state_ohare,
801 1, PMU_BATTERY_STATE);
803 pmu_request(&batt_req, done_battery_state_smart,
804 2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1);
807 #endif /* CONFIG_PMAC_PBOOK */
810 proc_get_info(char *page, char **start, off_t off,
811 int count, int *eof, void *data)
815 p += sprintf(p, "PMU driver version : %d\n", PMU_DRIVER_VERSION);
816 p += sprintf(p, "PMU firmware version : %02x\n", pmu_version);
817 #ifdef CONFIG_PMAC_PBOOK
818 p += sprintf(p, "AC Power : %d\n",
819 ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0));
820 p += sprintf(p, "Battery count : %d\n", pmu_battery_count);
821 #endif /* CONFIG_PMAC_PBOOK */
827 proc_get_irqstats(char *page, char **start, off_t off,
828 int count, int *eof, void *data)
832 static const char *irq_names[] = {
833 "Total CB1 triggered events",
834 "Total GPIO1 triggered events",
835 "PC-Card eject button",
836 "Sound/Brightness button",
838 "Battery state change",
839 "Environment interrupt",
841 "Ghost interrupt (zero len)",
842 "Empty interrupt (empty mask)",
846 for (i=0; i<11; i++) {
847 p += sprintf(p, " %2u: %10u (%s)\n",
848 i, pmu_irq_stats[i], irq_names[i]);
853 #ifdef CONFIG_PMAC_PBOOK
855 proc_get_batt(char *page, char **start, off_t off,
856 int count, int *eof, void *data)
858 int batnum = (int)data;
861 p += sprintf(p, "\n");
862 p += sprintf(p, "flags : %08x\n",
863 pmu_batteries[batnum].flags);
864 p += sprintf(p, "charge : %d\n",
865 pmu_batteries[batnum].charge);
866 p += sprintf(p, "max_charge : %d\n",
867 pmu_batteries[batnum].max_charge);
868 p += sprintf(p, "current : %d\n",
869 pmu_batteries[batnum].amperage);
870 p += sprintf(p, "voltage : %d\n",
871 pmu_batteries[batnum].voltage);
872 p += sprintf(p, "time rem. : %d\n",
873 pmu_batteries[batnum].time_remaining);
877 #endif /* CONFIG_PMAC_PBOOK */
880 proc_read_options(char *page, char **start, off_t off,
881 int count, int *eof, void *data)
885 #ifdef CONFIG_PMAC_PBOOK
886 if (pmu_kind == PMU_KEYLARGO_BASED &&
887 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
888 p += sprintf(p, "lid_wakeup=%d\n", option_lid_wakeup);
889 #endif /* CONFIG_PMAC_PBOOK */
890 if (pmu_kind == PMU_KEYLARGO_BASED)
891 p += sprintf(p, "server_mode=%d\n", option_server_mode);
897 proc_write_options(struct file *file, const char __user *buffer,
898 unsigned long count, void *data)
902 unsigned long fcount = count;
908 if (copy_from_user(tmp, buffer, count))
916 while(*val && (*val != '=')) {
926 #ifdef CONFIG_PMAC_PBOOK
927 if (pmu_kind == PMU_KEYLARGO_BASED &&
928 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0)
929 if (!strcmp(label, "lid_wakeup"))
930 option_lid_wakeup = ((*val) == '1');
931 #endif /* CONFIG_PMAC_PBOOK */
932 if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) {
934 new_value = ((*val) == '1');
935 if (new_value != option_server_mode)
936 pmu_set_server_mode(new_value);
942 /* Send an ADB command */
944 pmu_send_request(struct adb_request *req, int sync)
948 if ((vias == NULL) || (!pmu_fully_inited)) {
955 switch (req->data[0]) {
957 for (i = 0; i < req->nbytes - 1; ++i)
958 req->data[i] = req->data[i+1];
960 if (pmu_data_len[req->data[0]][1] != 0) {
961 req->reply[0] = ADB_RET_OK;
965 ret = pmu_queue_request(req);
968 switch (req->data[1]) {
970 if (req->nbytes != 2)
972 req->data[0] = PMU_READ_RTC;
975 req->reply[0] = CUDA_PACKET;
977 req->reply[2] = CUDA_GET_TIME;
978 ret = pmu_queue_request(req);
981 if (req->nbytes != 6)
983 req->data[0] = PMU_SET_RTC;
985 for (i = 1; i <= 4; ++i)
986 req->data[i] = req->data[i+1];
988 req->reply[0] = CUDA_PACKET;
990 req->reply[2] = CUDA_SET_TIME;
991 ret = pmu_queue_request(req);
998 for (i = req->nbytes - 1; i > 1; --i)
999 req->data[i+2] = req->data[i];
1000 req->data[3] = req->nbytes - 2;
1001 req->data[2] = pmu_adb_flags;
1002 /*req->data[1] = req->data[1];*/
1003 req->data[0] = PMU_ADB_CMD;
1005 req->reply_expected = 1;
1007 ret = pmu_queue_request(req);
1016 while (!req->complete)
1022 /* Enable/disable autopolling */
1024 pmu_adb_autopoll(int devs)
1026 struct adb_request req;
1028 if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1033 pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86,
1034 adb_dev_map >> 8, adb_dev_map);
1037 pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF);
1040 while (!req.complete)
1045 /* Reset the ADB bus */
1047 pmu_adb_reset_bus(void)
1049 struct adb_request req;
1050 int save_autopoll = adb_dev_map;
1052 if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb)
1055 /* anyone got a better idea?? */
1056 pmu_adb_autopoll(0);
1060 req.data[0] = PMU_ADB_CMD;
1062 req.data[2] = ADB_BUSRESET;
1066 req.reply_expected = 1;
1067 if (pmu_queue_request(&req) != 0) {
1068 printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n");
1071 pmu_wait_complete(&req);
1073 if (save_autopoll != 0)
1074 pmu_adb_autopoll(save_autopoll);
1078 #endif /* CONFIG_ADB */
1080 /* Construct and send a pmu request */
1082 pmu_request(struct adb_request *req, void (*done)(struct adb_request *),
1091 if (nbytes < 0 || nbytes > 32) {
1092 printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes);
1096 req->nbytes = nbytes;
1098 va_start(list, nbytes);
1099 for (i = 0; i < nbytes; ++i)
1100 req->data[i] = va_arg(list, int);
1103 req->reply_expected = 0;
1104 return pmu_queue_request(req);
1108 pmu_queue_request(struct adb_request *req)
1110 unsigned long flags;
1117 if (req->nbytes <= 0) {
1121 nsend = pmu_data_len[req->data[0]][0];
1122 if (nsend >= 0 && req->nbytes != nsend + 1) {
1131 spin_lock_irqsave(&pmu_lock, flags);
1132 if (current_req != 0) {
1133 last_req->next = req;
1138 if (pmu_state == idle)
1141 spin_unlock_irqrestore(&pmu_lock, flags);
1149 /* Sightly increased the delay, I had one occurrence of the message
1153 while ((in_8(&via[B]) & TACK) == 0) {
1154 if (--timeout < 0) {
1155 printk(KERN_ERR "PMU not responding (!ack)\n");
1162 /* New PMU seems to be very sensitive to those timings, so we make sure
1163 * PCI is flushed immediately */
1167 volatile unsigned char __iomem *v = via;
1169 out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT);
1171 out_8(&v[B], in_8(&v[B]) & ~TREQ); /* assert TREQ */
1178 volatile unsigned char __iomem *v = via;
1180 out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT);
1181 in_8(&v[SR]); /* resets SR */
1182 out_8(&v[B], in_8(&v[B]) & ~TREQ);
1187 pmu_done(struct adb_request *req)
1189 void (*done)(struct adb_request *) = req->done;
1192 /* Here, we assume that if the request has a done member, the
1193 * struct request will survive to setting req->complete to 1
1202 struct adb_request *req;
1204 /* assert pmu_state == idle */
1205 /* get the packet to send */
1207 if (req == 0 || pmu_state != idle
1208 || (/*req->reply_expected && */req_awaiting_reply))
1211 pmu_state = sending;
1213 data_len = pmu_data_len[req->data[0]][0];
1215 /* Sounds safer to make sure ACK is high before writing. This helped
1216 * kill a problem with ADB and some iBooks
1219 /* set the shift register to shift out and send a byte */
1220 send_byte(req->data[0]);
1230 via_pmu_interrupt(0, NULL, NULL);
1240 /* Kicks ADB read when PMU is suspended */
1241 adb_int_pending = 1;
1243 via_pmu_interrupt(0, NULL, NULL);
1244 } while (pmu_suspended && (adb_int_pending || pmu_state != idle
1245 || req_awaiting_reply));
1249 pmu_wait_complete(struct adb_request *req)
1253 while((pmu_state != idle && pmu_state != locked) || !req->complete)
1254 via_pmu_interrupt(0, NULL, NULL);
1257 /* This function loops until the PMU is idle and prevents it from
1258 * anwsering to ADB interrupts. pmu_request can still be called.
1259 * This is done to avoid spurrious shutdowns when we know we'll have
1260 * interrupts switched off for a long time
1265 unsigned long flags;
1266 #ifdef SUSPEND_USES_PMU
1267 struct adb_request *req;
1272 spin_lock_irqsave(&pmu_lock, flags);
1274 if (pmu_suspended > 1) {
1275 spin_unlock_irqrestore(&pmu_lock, flags);
1280 spin_unlock_irqrestore(&pmu_lock, flags);
1281 if (req_awaiting_reply)
1282 adb_int_pending = 1;
1283 via_pmu_interrupt(0, NULL, NULL);
1284 spin_lock_irqsave(&pmu_lock, flags);
1285 if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) {
1286 #ifdef SUSPEND_USES_PMU
1287 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0);
1288 spin_unlock_irqrestore(&pmu_lock, flags);
1289 while(!req.complete)
1291 #else /* SUSPEND_USES_PMU */
1293 disable_irq_nosync(gpio_irq);
1294 out_8(&via[IER], CB1_INT | IER_CLR);
1295 spin_unlock_irqrestore(&pmu_lock, flags);
1296 #endif /* SUSPEND_USES_PMU */
1305 unsigned long flags;
1307 if (!via || (pmu_suspended < 1))
1310 spin_lock_irqsave(&pmu_lock, flags);
1312 if (pmu_suspended > 0) {
1313 spin_unlock_irqrestore(&pmu_lock, flags);
1316 adb_int_pending = 1;
1317 #ifdef SUSPEND_USES_PMU
1318 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
1319 spin_unlock_irqrestore(&pmu_lock, flags);
1320 while(!req.complete)
1322 #else /* SUSPEND_USES_PMU */
1324 enable_irq(gpio_irq);
1325 out_8(&via[IER], CB1_INT | IER_SET);
1326 spin_unlock_irqrestore(&pmu_lock, flags);
1328 #endif /* SUSPEND_USES_PMU */
1331 /* Interrupt data could be the result data from an ADB cmd */
1333 pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs)
1335 unsigned char ints, pirq;
1339 if (drop_interrupts || len < 1) {
1340 adb_int_pending = 0;
1345 /* Get PMU interrupt mask */
1348 /* Record zero interrupts for stats */
1352 /* Hack to deal with ADB autopoll flag */
1353 if (ints & PMU_INT_ADB)
1354 ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL);
1359 if (i > pmu_irq_stats[10])
1360 pmu_irq_stats[10] = i;
1364 for (pirq = 0; pirq < 8; pirq++)
1365 if (ints & (1 << pirq))
1367 pmu_irq_stats[pirq]++;
1369 ints &= ~(1 << pirq);
1371 /* Note: for some reason, we get an interrupt with len=1,
1372 * data[0]==0 after each normal ADB interrupt, at least
1373 * on the Pismo. Still investigating... --BenH
1375 if ((1 << pirq) & PMU_INT_ADB) {
1376 if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
1377 struct adb_request *req = req_awaiting_reply;
1379 printk(KERN_ERR "PMU: extra ADB reply\n");
1382 req_awaiting_reply = NULL;
1386 memcpy(req->reply, data + 1, len - 1);
1387 req->reply_len = len - 1;
1391 #if defined(CONFIG_XMON) && !defined(CONFIG_PPC64)
1392 if (len == 4 && data[1] == 0x2c) {
1393 extern int xmon_wants_key, xmon_adb_keycode;
1394 if (xmon_wants_key) {
1395 xmon_adb_keycode = data[2];
1399 #endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */
1402 * XXX On the [23]400 the PMU gives us an up
1403 * event for keycodes 0x74 or 0x75 when the PC
1404 * card eject buttons are released, so we
1405 * ignore those events.
1407 if (!(pmu_kind == PMU_OHARE_BASED && len == 4
1408 && data[1] == 0x2c && data[3] == 0xff
1409 && (data[2] & ~1) == 0xf4))
1410 adb_input(data+1, len-1, regs, 1);
1411 #endif /* CONFIG_ADB */
1414 /* Sound/brightness button pressed */
1415 else if ((1 << pirq) & PMU_INT_SNDBRT) {
1416 #ifdef CONFIG_PMAC_BACKLIGHT
1418 #ifdef CONFIG_INPUT_ADBHID
1419 if (!disable_kernel_backlight)
1420 #endif /* CONFIG_INPUT_ADBHID */
1421 set_backlight_level(data[1] >> 4);
1422 #endif /* CONFIG_PMAC_BACKLIGHT */
1424 /* Tick interrupt */
1425 else if ((1 << pirq) & PMU_INT_TICK) {
1426 #ifdef CONFIG_PMAC_PBOOK
1427 /* Environement or tick interrupt, query batteries */
1428 if (pmu_battery_count) {
1429 if ((--query_batt_timer) == 0) {
1430 query_battery_state();
1431 query_batt_timer = BATTERY_POLLING_COUNT;
1435 else if ((1 << pirq) & PMU_INT_ENVIRONMENT) {
1436 if (pmu_battery_count)
1437 query_battery_state();
1438 pmu_pass_intr(data, len);
1440 pmu_pass_intr(data, len);
1441 #endif /* CONFIG_PMAC_PBOOK */
1446 static struct adb_request* __pmac
1447 pmu_sr_intr(struct pt_regs *regs)
1449 struct adb_request *req;
1452 if (via[B] & TREQ) {
1453 printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]);
1454 out_8(&via[IFR], SR_INT);
1457 /* The ack may not yet be low when we get the interrupt */
1458 while ((in_8(&via[B]) & TACK) != 0)
1461 /* if reading grab the byte, and reset the interrupt */
1462 if (pmu_state == reading || pmu_state == reading_intr)
1463 bite = in_8(&via[SR]);
1465 /* reset TREQ and wait for TACK to go high */
1466 out_8(&via[B], in_8(&via[B]) | TREQ);
1469 switch (pmu_state) {
1473 data_len = req->nbytes - 1;
1474 send_byte(data_len);
1477 if (data_index <= data_len) {
1478 send_byte(req->data[data_index++]);
1482 data_len = pmu_data_len[req->data[0]][1];
1483 if (data_len == 0) {
1485 current_req = req->next;
1486 if (req->reply_expected)
1487 req_awaiting_reply = req;
1491 pmu_state = reading;
1493 reply_ptr = req->reply + req->reply_len;
1501 pmu_state = reading_intr;
1502 reply_ptr = interrupt_data[int_data_last];
1504 if (gpio_irq >= 0 && !gpio_irq_enabled) {
1505 enable_irq(gpio_irq);
1506 gpio_irq_enabled = 1;
1512 if (data_len == -1) {
1515 printk(KERN_ERR "PMU: bad reply len %d\n", bite);
1516 } else if (data_index < 32) {
1517 reply_ptr[data_index++] = bite;
1519 if (data_index < data_len) {
1524 if (pmu_state == reading_intr) {
1526 int_data_state[int_data_last] = int_data_ready;
1527 interrupt_data_len[int_data_last] = data_len;
1531 * For PMU sleep and freq change requests, we lock the
1532 * PMU until it's explicitely unlocked. This avoids any
1533 * spurrious event polling getting in
1535 current_req = req->next;
1536 req->reply_len += data_index;
1537 if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED)
1546 printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n",
1552 static irqreturn_t __pmac
1553 via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs)
1555 unsigned long flags;
1559 struct adb_request *req = NULL;
1562 /* This is a bit brutal, we can probably do better */
1563 spin_lock_irqsave(&pmu_lock, flags);
1567 intr = in_8(&via[IFR]) & (SR_INT | CB1_INT);
1571 if (++nloop > 1000) {
1572 printk(KERN_DEBUG "PMU: stuck in intr loop, "
1573 "intr=%x, ier=%x pmu_state=%d\n",
1574 intr, in_8(&via[IER]), pmu_state);
1577 out_8(&via[IFR], intr);
1578 if (intr & CB1_INT) {
1579 adb_int_pending = 1;
1582 if (intr & SR_INT) {
1583 req = pmu_sr_intr(regs);
1590 if (pmu_state == idle) {
1591 if (adb_int_pending) {
1592 if (int_data_state[0] == int_data_empty)
1594 else if (int_data_state[1] == int_data_empty)
1599 int_data_state[int_data_last] = int_data_fill;
1600 /* Sounds safer to make sure ACK is high before writing.
1601 * This helped kill a problem with ADB and some iBooks
1604 send_byte(PMU_INT_ACK);
1605 adb_int_pending = 0;
1606 } else if (current_req)
1610 /* Mark the oldest buffer for flushing */
1611 if (int_data_state[!int_data_last] == int_data_ready) {
1612 int_data_state[!int_data_last] = int_data_flush;
1613 int_data = !int_data_last;
1614 } else if (int_data_state[int_data_last] == int_data_ready) {
1615 int_data_state[int_data_last] = int_data_flush;
1616 int_data = int_data_last;
1619 spin_unlock_irqrestore(&pmu_lock, flags);
1621 /* Deal with completed PMU requests outside of the lock */
1627 /* Deal with interrupt datas outside of the lock */
1628 if (int_data >= 0) {
1629 pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data], regs);
1630 spin_lock_irqsave(&pmu_lock, flags);
1632 int_data_state[int_data] = int_data_empty;
1637 return IRQ_RETVAL(handled);
1643 unsigned long flags;
1645 spin_lock_irqsave(&pmu_lock, flags);
1646 if (pmu_state == locked)
1648 adb_int_pending = 1;
1649 spin_unlock_irqrestore(&pmu_lock, flags);
1653 static irqreturn_t __pmac
1654 gpio1_interrupt(int irq, void *arg, struct pt_regs *regs)
1656 unsigned long flags;
1658 if ((in_8(gpio_reg + 0x9) & 0x02) == 0) {
1659 spin_lock_irqsave(&pmu_lock, flags);
1660 if (gpio_irq_enabled > 0) {
1661 disable_irq_nosync(gpio_irq);
1662 gpio_irq_enabled = 0;
1665 adb_int_pending = 1;
1666 spin_unlock_irqrestore(&pmu_lock, flags);
1667 via_pmu_interrupt(0, NULL, NULL);
1673 #ifdef CONFIG_PMAC_BACKLIGHT
1674 static int backlight_to_bright[] __pmacdata = {
1675 0x7f, 0x46, 0x42, 0x3e, 0x3a, 0x36, 0x32, 0x2e,
1676 0x2a, 0x26, 0x22, 0x1e, 0x1a, 0x16, 0x12, 0x0e
1679 static int __openfirmware
1680 pmu_set_backlight_enable(int on, int level, void* data)
1682 struct adb_request req;
1688 pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT,
1689 backlight_to_bright[level]);
1690 pmu_wait_complete(&req);
1692 pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
1693 PMU_POW_BACKLIGHT | (on ? PMU_POW_ON : PMU_POW_OFF));
1694 pmu_wait_complete(&req);
1699 static void __openfirmware
1700 pmu_bright_complete(struct adb_request *req)
1702 if (req == &bright_req_1)
1703 clear_bit(1, &async_req_locks);
1704 if (req == &bright_req_2)
1705 clear_bit(2, &async_req_locks);
1708 static int __openfirmware
1709 pmu_set_backlight_level(int level, void* data)
1714 if (test_and_set_bit(1, &async_req_locks))
1716 pmu_request(&bright_req_1, pmu_bright_complete, 2, PMU_BACKLIGHT_BRIGHT,
1717 backlight_to_bright[level]);
1718 if (test_and_set_bit(2, &async_req_locks))
1720 pmu_request(&bright_req_2, pmu_bright_complete, 2, PMU_POWER_CTRL,
1721 PMU_POW_BACKLIGHT | (level > BACKLIGHT_OFF ?
1722 PMU_POW_ON : PMU_POW_OFF));
1726 #endif /* CONFIG_PMAC_BACKLIGHT */
1729 pmu_enable_irled(int on)
1731 struct adb_request req;
1735 if (pmu_kind == PMU_KEYLARGO_BASED)
1738 pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED |
1739 (on ? PMU_POW_ON : PMU_POW_OFF));
1740 pmu_wait_complete(&req);
1746 struct adb_request req;
1748 local_irq_disable();
1750 drop_interrupts = 1;
1752 if (pmu_kind != PMU_KEYLARGO_BASED) {
1753 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1755 while(!req.complete)
1759 pmu_request(&req, NULL, 1, PMU_RESET);
1760 pmu_wait_complete(&req);
1768 struct adb_request req;
1770 local_irq_disable();
1772 drop_interrupts = 1;
1774 if (pmu_kind != PMU_KEYLARGO_BASED) {
1775 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB |
1777 pmu_wait_complete(&req);
1779 /* Disable server mode on shutdown or we'll just
1782 pmu_set_server_mode(0);
1785 pmu_request(&req, NULL, 5, PMU_SHUTDOWN,
1786 'M', 'A', 'T', 'T');
1787 pmu_wait_complete(&req);
1798 struct pmu_i2c_hdr {
1809 pmu_i2c_combined_read(int bus, int addr, int subaddr, u8* data, int len)
1811 struct adb_request req;
1812 struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1816 for (retry=0; retry<16; retry++) {
1817 memset(&req, 0, sizeof(req));
1820 hdr->address = addr & 0xfe;
1821 hdr->mode = PMU_I2C_MODE_COMBINED;
1823 hdr->sub_addr = subaddr;
1824 hdr->comb_addr = addr | 1;
1827 req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
1828 req.reply_expected = 0;
1830 req.data[0] = PMU_I2C_CMD;
1831 req.reply[0] = 0xff;
1832 rc = pmu_queue_request(&req);
1835 while(!req.complete)
1837 if (req.reply[0] == PMU_I2C_STATUS_OK)
1841 if (req.reply[0] != PMU_I2C_STATUS_OK)
1844 for (retry=0; retry<16; retry++) {
1845 memset(&req, 0, sizeof(req));
1849 hdr->bus = PMU_I2C_BUS_STATUS;
1850 req.reply[0] = 0xff;
1853 req.reply_expected = 0;
1855 req.data[0] = PMU_I2C_CMD;
1856 rc = pmu_queue_request(&req);
1859 while(!req.complete)
1861 if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
1862 memcpy(data, &req.reply[1], req.reply_len - 1);
1863 return req.reply_len - 1;
1870 pmu_i2c_stdsub_write(int bus, int addr, int subaddr, u8* data, int len)
1872 struct adb_request req;
1873 struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1877 for (retry=0; retry<16; retry++) {
1878 memset(&req, 0, sizeof(req));
1881 hdr->address = addr & 0xfe;
1882 hdr->mode = PMU_I2C_MODE_STDSUB;
1884 hdr->sub_addr = subaddr;
1885 hdr->comb_addr = addr & 0xfe;
1888 req.data[0] = PMU_I2C_CMD;
1889 memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
1890 req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
1891 req.reply_expected = 0;
1893 req.reply[0] = 0xff;
1894 rc = pmu_queue_request(&req);
1897 while(!req.complete)
1899 if (req.reply[0] == PMU_I2C_STATUS_OK)
1903 if (req.reply[0] != PMU_I2C_STATUS_OK)
1906 for (retry=0; retry<16; retry++) {
1907 memset(&req, 0, sizeof(req));
1911 hdr->bus = PMU_I2C_BUS_STATUS;
1912 req.reply[0] = 0xff;
1915 req.reply_expected = 0;
1917 req.data[0] = PMU_I2C_CMD;
1918 rc = pmu_queue_request(&req);
1921 while(!req.complete)
1923 if (req.reply[0] == PMU_I2C_STATUS_OK)
1930 pmu_i2c_simple_read(int bus, int addr, u8* data, int len)
1932 struct adb_request req;
1933 struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1937 for (retry=0; retry<16; retry++) {
1938 memset(&req, 0, sizeof(req));
1941 hdr->address = addr | 1;
1942 hdr->mode = PMU_I2C_MODE_SIMPLE;
1948 req.data[0] = PMU_I2C_CMD;
1949 req.nbytes = sizeof(struct pmu_i2c_hdr) + 1;
1950 req.reply_expected = 0;
1952 req.reply[0] = 0xff;
1953 rc = pmu_queue_request(&req);
1956 while(!req.complete)
1958 if (req.reply[0] == PMU_I2C_STATUS_OK)
1962 if (req.reply[0] != PMU_I2C_STATUS_OK)
1965 for (retry=0; retry<16; retry++) {
1966 memset(&req, 0, sizeof(req));
1970 hdr->bus = PMU_I2C_BUS_STATUS;
1971 req.reply[0] = 0xff;
1974 req.reply_expected = 0;
1976 req.data[0] = PMU_I2C_CMD;
1977 rc = pmu_queue_request(&req);
1980 while(!req.complete)
1982 if (req.reply[0] == PMU_I2C_STATUS_DATAREAD) {
1983 memcpy(data, &req.reply[1], req.reply_len - 1);
1984 return req.reply_len - 1;
1991 pmu_i2c_simple_write(int bus, int addr, u8* data, int len)
1993 struct adb_request req;
1994 struct pmu_i2c_hdr *hdr = (struct pmu_i2c_hdr *)&req.data[1];
1998 for (retry=0; retry<16; retry++) {
1999 memset(&req, 0, sizeof(req));
2002 hdr->address = addr & 0xfe;
2003 hdr->mode = PMU_I2C_MODE_SIMPLE;
2009 req.data[0] = PMU_I2C_CMD;
2010 memcpy(&req.data[sizeof(struct pmu_i2c_hdr) + 1], data, len);
2011 req.nbytes = sizeof(struct pmu_i2c_hdr) + len + 1;
2012 req.reply_expected = 0;
2014 req.reply[0] = 0xff;
2015 rc = pmu_queue_request(&req);
2018 while(!req.complete)
2020 if (req.reply[0] == PMU_I2C_STATUS_OK)
2024 if (req.reply[0] != PMU_I2C_STATUS_OK)
2027 for (retry=0; retry<16; retry++) {
2028 memset(&req, 0, sizeof(req));
2032 hdr->bus = PMU_I2C_BUS_STATUS;
2033 req.reply[0] = 0xff;
2036 req.reply_expected = 0;
2038 req.data[0] = PMU_I2C_CMD;
2039 rc = pmu_queue_request(&req);
2042 while(!req.complete)
2044 if (req.reply[0] == PMU_I2C_STATUS_OK)
2050 #ifdef CONFIG_PMAC_PBOOK
2052 static LIST_HEAD(sleep_notifiers);
2055 pmu_register_sleep_notifier(struct pmu_sleep_notifier *n)
2057 struct list_head *list;
2058 struct pmu_sleep_notifier *notifier;
2060 for (list = sleep_notifiers.next; list != &sleep_notifiers;
2061 list = list->next) {
2062 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2063 if (n->priority > notifier->priority)
2066 __list_add(&n->list, list->prev, list);
2071 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n)
2073 if (n->list.next == 0)
2076 n->list.next = NULL;
2080 /* Sleep is broadcast last-to-first */
2082 broadcast_sleep(int when, int fallback)
2084 int ret = PBOOK_SLEEP_OK;
2085 struct list_head *list;
2086 struct pmu_sleep_notifier *notifier;
2088 for (list = sleep_notifiers.prev; list != &sleep_notifiers;
2089 list = list->prev) {
2090 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2091 ret = notifier->notifier_call(notifier, when);
2092 if (ret != PBOOK_SLEEP_OK) {
2093 printk(KERN_DEBUG "sleep %d rejected by %p (%p)\n",
2094 when, notifier, notifier->notifier_call);
2095 for (; list != &sleep_notifiers; list = list->next) {
2096 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2097 notifier->notifier_call(notifier, fallback);
2105 /* Wake is broadcast first-to-last */
2107 broadcast_wake(void)
2109 int ret = PBOOK_SLEEP_OK;
2110 struct list_head *list;
2111 struct pmu_sleep_notifier *notifier;
2113 for (list = sleep_notifiers.next; list != &sleep_notifiers;
2114 list = list->next) {
2115 notifier = list_entry(list, struct pmu_sleep_notifier, list);
2116 notifier->notifier_call(notifier, PBOOK_WAKE);
2122 * This struct is used to store config register values for
2123 * PCI devices which may get powered off when we sleep.
2125 static struct pci_save {
2126 #ifndef HACKED_PCI_SAVE
2135 static int pbook_npci_saves;
2138 pbook_alloc_pci_save(void)
2141 struct pci_dev *pd = NULL;
2144 while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
2149 pbook_pci_saves = (struct pci_save *)
2150 kmalloc(npci * sizeof(struct pci_save), GFP_KERNEL);
2151 pbook_npci_saves = npci;
2155 pbook_free_pci_save(void)
2157 if (pbook_pci_saves == NULL)
2159 kfree(pbook_pci_saves);
2160 pbook_pci_saves = NULL;
2161 pbook_npci_saves = 0;
2165 pbook_pci_save(void)
2167 struct pci_save *ps = pbook_pci_saves;
2168 struct pci_dev *pd = NULL;
2169 int npci = pbook_npci_saves;
2174 while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
2177 #ifndef HACKED_PCI_SAVE
2178 pci_read_config_word(pd, PCI_COMMAND, &ps->command);
2179 pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat);
2180 pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr);
2181 pci_read_config_dword(pd, PCI_ROM_ADDRESS, &ps->rom_address);
2185 pci_read_config_dword(pd, i<<4, &ps->config[i]);
2191 /* For this to work, we must take care of a few things: If gmac was enabled
2192 * during boot, it will be in the pci dev list. If it's disabled at this point
2193 * (and it will probably be), then you can't access it's config space.
2196 pbook_pci_restore(void)
2199 struct pci_save *ps = pbook_pci_saves - 1;
2200 struct pci_dev *pd = NULL;
2201 int npci = pbook_npci_saves;
2204 while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
2205 #ifdef HACKED_PCI_SAVE
2211 pci_write_config_dword(pd, i<<4, ps->config[i]);
2212 pci_write_config_dword(pd, 4, ps->config[1]);
2217 if (ps->command == 0)
2219 pci_read_config_word(pd, PCI_COMMAND, &cmd);
2220 if ((ps->command & ~cmd) == 0)
2222 switch (pd->hdr_type) {
2223 case PCI_HEADER_TYPE_NORMAL:
2224 for (j = 0; j < 6; ++j)
2225 pci_write_config_dword(pd,
2226 PCI_BASE_ADDRESS_0 + j*4,
2227 pd->resource[j].start);
2228 pci_write_config_dword(pd, PCI_ROM_ADDRESS,
2230 pci_write_config_word(pd, PCI_CACHE_LINE_SIZE,
2232 pci_write_config_word(pd, PCI_INTERRUPT_LINE,
2234 pci_write_config_word(pd, PCI_COMMAND, ps->command);
2242 /* N.B. This doesn't work on the 3400 */
2246 struct adb_request req;
2248 memset(&req, 0, sizeof(req));
2250 for (; n > 0; --n) {
2257 req.reply[0] = ADB_RET_OK;
2259 req.reply_expected = 0;
2260 pmu_polled_request(&req);
2268 req.reply[0] = ADB_RET_OK;
2270 req.reply_expected = 0;
2271 pmu_polled_request(&req);
2279 * Put the powerbook to sleep.
2282 static u32 save_via[8] __pmacdata;
2285 save_via_state(void)
2287 save_via[0] = in_8(&via[ANH]);
2288 save_via[1] = in_8(&via[DIRA]);
2289 save_via[2] = in_8(&via[B]);
2290 save_via[3] = in_8(&via[DIRB]);
2291 save_via[4] = in_8(&via[PCR]);
2292 save_via[5] = in_8(&via[ACR]);
2293 save_via[6] = in_8(&via[T1CL]);
2294 save_via[7] = in_8(&via[T1CH]);
2297 restore_via_state(void)
2299 out_8(&via[ANH], save_via[0]);
2300 out_8(&via[DIRA], save_via[1]);
2301 out_8(&via[B], save_via[2]);
2302 out_8(&via[DIRB], save_via[3]);
2303 out_8(&via[PCR], save_via[4]);
2304 out_8(&via[ACR], save_via[5]);
2305 out_8(&via[T1CL], save_via[6]);
2306 out_8(&via[T1CH], save_via[7]);
2307 out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
2308 out_8(&via[IFR], 0x7f); /* clear IFR */
2309 out_8(&via[IER], IER_SET | SR_INT | CB1_INT);
2313 pmac_suspend_devices(void)
2317 pm_prepare_console();
2319 /* Notify old-style device drivers & userland */
2320 ret = broadcast_sleep(PBOOK_SLEEP_REQUEST, PBOOK_SLEEP_REJECT);
2321 if (ret != PBOOK_SLEEP_OK) {
2322 printk(KERN_ERR "Sleep rejected by drivers\n");
2326 /* Sync the disks. */
2327 /* XXX It would be nice to have some way to ensure that
2328 * nobody is dirtying any new buffers while we wait. That
2329 * could be acheived using the refrigerator for processes
2334 /* Sleep can fail now. May not be very robust but useful for debugging */
2335 ret = broadcast_sleep(PBOOK_SLEEP_NOW, PBOOK_WAKE);
2336 if (ret != PBOOK_SLEEP_OK) {
2337 printk(KERN_ERR "Driver sleep failed\n");
2341 /* Send suspend call to devices, hold the device core's dpm_sem */
2342 ret = device_suspend(PM_SUSPEND_MEM);
2345 printk(KERN_ERR "Driver sleep failed\n");
2351 /* Make sure the decrementer won't interrupt us */
2352 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2353 /* Make sure any pending DEC interrupt occurring while we did
2354 * the above didn't re-enable the DEC */
2356 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2358 /* We can now disable MSR_EE. This code of course works properly only
2359 * on UP machines... For SMP, if we ever implement sleep, we'll have to
2360 * stop the "other" CPUs way before we do all that stuff.
2362 local_irq_disable();
2364 /* Broadcast power down irq
2365 * This isn't that useful in most cases (only directly wired devices can
2366 * use this but still... This will take care of sysdev's as well, so
2367 * we exit from here with local irqs disabled and PIC off.
2369 ret = device_power_down(PM_SUSPEND_MEM);
2371 wakeup_decrementer();
2376 printk(KERN_ERR "Driver powerdown failed\n");
2380 /* Wait for completion of async backlight requests */
2381 while (!bright_req_1.complete || !bright_req_2.complete ||
2386 /* Giveup the lazy FPU & vec so we don't have to back them
2387 * up from the low level code
2391 #ifdef CONFIG_ALTIVEC
2392 if (cur_cpu_spec[0]->cpu_features & CPU_FTR_ALTIVEC)
2393 enable_kernel_altivec();
2394 #endif /* CONFIG_ALTIVEC */
2400 pmac_wakeup_devices(void)
2404 /* Power back up system devices (including the PIC) */
2407 /* Force a poll of ADB interrupts */
2408 adb_int_pending = 1;
2409 via_pmu_interrupt(0, NULL, NULL);
2411 /* Restart jiffies & scheduling */
2412 wakeup_decrementer();
2414 /* Re-enable local CPU interrupts */
2421 /* Resume devices */
2424 /* Notify old style drivers */
2427 pm_restore_console();
2432 #define GRACKLE_PM (1<<7)
2433 #define GRACKLE_DOZE (1<<5)
2434 #define GRACKLE_NAP (1<<4)
2435 #define GRACKLE_SLEEP (1<<3)
2438 powerbook_sleep_grackle(void)
2440 unsigned long save_l2cr;
2441 unsigned short pmcr1;
2442 struct adb_request req;
2444 struct pci_dev *grackle;
2446 grackle = pci_find_slot(0, 0);
2450 ret = pmac_suspend_devices();
2452 printk(KERN_ERR "Sleep rejected by devices\n");
2456 /* Turn off various things. Darwin does some retry tests here... */
2457 pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE);
2458 pmu_wait_complete(&req);
2459 pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
2460 PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY);
2461 pmu_wait_complete(&req);
2463 /* For 750, save backside cache setting and disable it */
2464 save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
2466 if (!__fake_sleep) {
2467 /* Ask the PMU to put us to sleep */
2468 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
2469 pmu_wait_complete(&req);
2472 /* The VIA is supposed not to be restored correctly*/
2474 /* We shut down some HW */
2475 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
2477 pci_read_config_word(grackle, 0x70, &pmcr1);
2478 /* Apparently, MacOS uses NAP mode for Grackle ??? */
2479 pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP);
2480 pmcr1 |= GRACKLE_PM|GRACKLE_NAP;
2481 pci_write_config_word(grackle, 0x70, pmcr1);
2483 /* Call low-level ASM sleep handler */
2487 low_sleep_handler();
2489 /* We're awake again, stop grackle PM */
2490 pci_read_config_word(grackle, 0x70, &pmcr1);
2491 pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP);
2492 pci_write_config_word(grackle, 0x70, pmcr1);
2494 /* Make sure the PMU is idle */
2495 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
2496 restore_via_state();
2498 /* Restore L2 cache */
2499 if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
2500 _set_L2CR(save_l2cr);
2502 /* Restore userland MMU context */
2503 set_context(current->active_mm->context, current->active_mm->pgd);
2505 /* Power things up */
2507 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
2508 pmu_wait_complete(&req);
2509 pmu_request(&req, NULL, 2, PMU_POWER_CTRL0,
2510 PMU_POW0_ON|PMU_POW0_HARD_DRIVE);
2511 pmu_wait_complete(&req);
2512 pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
2513 PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY);
2514 pmu_wait_complete(&req);
2516 pmac_wakeup_devices();
2522 powerbook_sleep_Core99(void)
2524 unsigned long save_l2cr;
2525 unsigned long save_l3cr;
2526 struct adb_request req;
2529 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) {
2530 printk(KERN_ERR "Sleep mode not supported on this machine\n");
2534 if (num_online_cpus() > 1 || cpu_is_offline(0))
2537 ret = pmac_suspend_devices();
2539 printk(KERN_ERR "Sleep rejected by devices\n");
2543 printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1));
2545 /* Tell PMU what events will wake us up */
2546 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS,
2548 pmu_wait_complete(&req);
2549 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS,
2550 0, PMU_PWR_WAKEUP_KEY |
2551 (option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0));
2552 pmu_wait_complete(&req);
2554 /* Save the state of the L2 and L3 caches */
2555 save_l3cr = _get_L3CR(); /* (returns -1 if not available) */
2556 save_l2cr = _get_L2CR(); /* (returns -1 if not available) */
2558 if (!__fake_sleep) {
2559 /* Ask the PMU to put us to sleep */
2560 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
2561 pmu_wait_complete(&req);
2564 /* The VIA is supposed not to be restored correctly*/
2567 /* Shut down various ASICs. There's a chance that we can no longer
2568 * talk to the PMU after this, so I moved it to _after_ sending the
2569 * sleep command to it. Still need to be checked.
2571 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
2573 /* Call low-level ASM sleep handler */
2577 low_sleep_handler();
2579 /* Restore Apple core ASICs state */
2580 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
2583 restore_via_state();
2586 pmac_call_early_video_resume();
2588 /* Restore L2 cache */
2589 if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0)
2590 _set_L2CR(save_l2cr);
2591 /* Restore L3 cache */
2592 if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0)
2593 _set_L3CR(save_l3cr);
2595 /* Restore userland MMU context */
2596 set_context(current->active_mm->context, current->active_mm->pgd);
2598 /* Tell PMU we are ready */
2600 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2);
2601 pmu_wait_complete(&req);
2602 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask);
2603 pmu_wait_complete(&req);
2605 printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1));
2607 pmac_wakeup_devices();
2612 #define PB3400_MEM_CTRL 0xf8000000
2613 #define PB3400_MEM_CTRL_SLEEP 0x70
2616 powerbook_sleep_3400(void)
2621 struct adb_request sleep_req;
2622 void __iomem *mem_ctrl;
2623 unsigned int __iomem *mem_ctrl_sleep;
2625 /* first map in the memory controller registers */
2626 mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
2627 if (mem_ctrl == NULL) {
2628 printk("powerbook_sleep_3400: ioremap failed\n");
2631 mem_ctrl_sleep = mem_ctrl + PB3400_MEM_CTRL_SLEEP;
2633 /* Allocate room for PCI save */
2634 pbook_alloc_pci_save();
2636 ret = pmac_suspend_devices();
2638 pbook_free_pci_save();
2639 printk(KERN_ERR "Sleep rejected by devices\n");
2643 /* Save the state of PCI config space for some slots */
2646 /* Set the memory controller to keep the memory refreshed
2647 while we're asleep */
2648 for (i = 0x403f; i >= 0x4000; --i) {
2649 out_be32(mem_ctrl_sleep, i);
2651 x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff;
2657 /* Ask the PMU to put us to sleep */
2658 pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
2659 while (!sleep_req.complete)
2662 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
2664 /* displacement-flush the L2 cache - necessary? */
2665 for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000)
2666 i = *(volatile int *)p;
2669 /* Put the CPU into sleep mode */
2670 asm volatile("mfspr %0,1008" : "=r" (hid0) :);
2671 hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
2672 asm volatile("mtspr 1008,%0" : : "r" (hid0));
2673 _nmask_and_or_msr(0, MSR_POW | MSR_EE);
2676 /* OK, we're awake again, start restoring things */
2677 out_be32(mem_ctrl_sleep, 0x3f);
2678 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
2679 pbook_pci_restore();
2682 /* wait for the PMU interrupt sequence to complete */
2686 pmac_wakeup_devices();
2687 pbook_free_pci_save();
2694 * Support for /dev/pmu device
2696 #define RB_SIZE 0x10
2697 struct pmu_private {
2698 struct list_head list;
2703 unsigned char data[16];
2705 wait_queue_head_t wait;
2707 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2708 int backlight_locker;
2709 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2712 static LIST_HEAD(all_pmu_pvt);
2713 static DEFINE_SPINLOCK(all_pvt_lock __pmacdata);
2716 pmu_pass_intr(unsigned char *data, int len)
2718 struct pmu_private *pp;
2719 struct list_head *list;
2721 unsigned long flags;
2723 if (len > sizeof(pp->rb_buf[0].data))
2724 len = sizeof(pp->rb_buf[0].data);
2725 spin_lock_irqsave(&all_pvt_lock, flags);
2726 for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) {
2727 pp = list_entry(list, struct pmu_private, list);
2728 spin_lock(&pp->lock);
2732 if (i != pp->rb_get) {
2733 struct rb_entry *rp = &pp->rb_buf[pp->rb_put];
2735 memcpy(rp->data, data, len);
2737 wake_up_interruptible(&pp->wait);
2739 spin_unlock(&pp->lock);
2741 spin_unlock_irqrestore(&all_pvt_lock, flags);
2745 pmu_open(struct inode *inode, struct file *file)
2747 struct pmu_private *pp;
2748 unsigned long flags;
2750 pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
2753 pp->rb_get = pp->rb_put = 0;
2754 spin_lock_init(&pp->lock);
2755 init_waitqueue_head(&pp->wait);
2756 spin_lock_irqsave(&all_pvt_lock, flags);
2757 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2758 pp->backlight_locker = 0;
2759 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2760 list_add(&pp->list, &all_pmu_pvt);
2761 spin_unlock_irqrestore(&all_pvt_lock, flags);
2762 file->private_data = pp;
2766 static ssize_t __pmac
2767 pmu_read(struct file *file, char __user *buf,
2768 size_t count, loff_t *ppos)
2770 struct pmu_private *pp = file->private_data;
2771 DECLARE_WAITQUEUE(wait, current);
2772 unsigned long flags;
2775 if (count < 1 || pp == 0)
2777 ret = verify_area(VERIFY_WRITE, buf, count);
2781 spin_lock_irqsave(&pp->lock, flags);
2782 add_wait_queue(&pp->wait, &wait);
2783 current->state = TASK_INTERRUPTIBLE;
2787 if (pp->rb_get != pp->rb_put) {
2789 struct rb_entry *rp = &pp->rb_buf[i];
2791 spin_unlock_irqrestore(&pp->lock, flags);
2794 if (ret > 0 && copy_to_user(buf, rp->data, ret))
2798 spin_lock_irqsave(&pp->lock, flags);
2803 if (file->f_flags & O_NONBLOCK)
2806 if (signal_pending(current))
2808 spin_unlock_irqrestore(&pp->lock, flags);
2810 spin_lock_irqsave(&pp->lock, flags);
2812 current->state = TASK_RUNNING;
2813 remove_wait_queue(&pp->wait, &wait);
2814 spin_unlock_irqrestore(&pp->lock, flags);
2819 static ssize_t __pmac
2820 pmu_write(struct file *file, const char __user *buf,
2821 size_t count, loff_t *ppos)
2826 static unsigned int __pmac
2827 pmu_fpoll(struct file *filp, poll_table *wait)
2829 struct pmu_private *pp = filp->private_data;
2830 unsigned int mask = 0;
2831 unsigned long flags;
2835 poll_wait(filp, &pp->wait, wait);
2836 spin_lock_irqsave(&pp->lock, flags);
2837 if (pp->rb_get != pp->rb_put)
2839 spin_unlock_irqrestore(&pp->lock, flags);
2844 pmu_release(struct inode *inode, struct file *file)
2846 struct pmu_private *pp = file->private_data;
2847 unsigned long flags;
2851 file->private_data = NULL;
2852 spin_lock_irqsave(&all_pvt_lock, flags);
2853 list_del(&pp->list);
2854 spin_unlock_irqrestore(&all_pvt_lock, flags);
2855 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2856 if (pp->backlight_locker) {
2857 spin_lock_irqsave(&pmu_lock, flags);
2858 disable_kernel_backlight--;
2859 spin_unlock_irqrestore(&pmu_lock, flags);
2861 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2868 /* Note: removed __openfirmware here since it causes link errors */
2870 pmu_ioctl(struct inode * inode, struct file *filp,
2871 u_int cmd, u_long arg)
2873 struct pmu_private *pp = filp->private_data;
2874 __u32 __user *argp = (__u32 __user *)arg;
2879 if (!capable(CAP_SYS_ADMIN))
2881 if (sleep_in_progress)
2883 sleep_in_progress = 1;
2885 case PMU_OHARE_BASED:
2886 error = powerbook_sleep_3400();
2888 case PMU_HEATHROW_BASED:
2889 case PMU_PADDINGTON_BASED:
2890 error = powerbook_sleep_grackle();
2892 case PMU_KEYLARGO_BASED:
2893 error = powerbook_sleep_Core99();
2898 sleep_in_progress = 0;
2900 case PMU_IOC_CAN_SLEEP:
2901 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0)
2902 return put_user(0, argp);
2904 return put_user(1, argp);
2906 #ifdef CONFIG_PMAC_BACKLIGHT
2907 /* Backlight should have its own device or go via
2910 case PMU_IOC_GET_BACKLIGHT:
2911 if (sleep_in_progress)
2913 error = get_backlight_level();
2916 return put_user(error, argp);
2917 case PMU_IOC_SET_BACKLIGHT:
2920 if (sleep_in_progress)
2922 error = get_user(value, argp);
2924 error = set_backlight_level(value);
2927 #ifdef CONFIG_INPUT_ADBHID
2928 case PMU_IOC_GRAB_BACKLIGHT: {
2929 unsigned long flags;
2930 if (pp->backlight_locker)
2932 pp->backlight_locker = 1;
2933 spin_lock_irqsave(&pmu_lock, flags);
2934 disable_kernel_backlight++;
2935 spin_unlock_irqrestore(&pmu_lock, flags);
2938 #endif /* CONFIG_INPUT_ADBHID */
2939 #endif /* CONFIG_PMAC_BACKLIGHT */
2940 case PMU_IOC_GET_MODEL:
2941 return put_user(pmu_kind, argp);
2942 case PMU_IOC_HAS_ADB:
2943 return put_user(pmu_has_adb, argp);
2948 static struct file_operations pmu_device_fops __pmacdata = {
2954 .release = pmu_release,
2957 static struct miscdevice pmu_device __pmacdata = {
2958 PMU_MINOR, "pmu", &pmu_device_fops
2961 void pmu_device_init(void)
2965 if (misc_register(&pmu_device) < 0)
2966 printk(KERN_ERR "via-pmu: cannot register misc device.\n");
2968 #endif /* CONFIG_PMAC_PBOOK */
2971 static inline void __pmac
2972 polled_handshake(volatile unsigned char __iomem *via)
2974 via[B] &= ~TREQ; eieio();
2975 while ((via[B] & TACK) != 0)
2977 via[B] |= TREQ; eieio();
2978 while ((via[B] & TACK) == 0)
2982 static inline void __pmac
2983 polled_send_byte(volatile unsigned char __iomem *via, int x)
2985 via[ACR] |= SR_OUT | SR_EXT; eieio();
2986 via[SR] = x; eieio();
2987 polled_handshake(via);
2990 static inline int __pmac
2991 polled_recv_byte(volatile unsigned char __iomem *via)
2995 via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio();
2996 x = via[SR]; eieio();
2997 polled_handshake(via);
2998 x = via[SR]; eieio();
3003 pmu_polled_request(struct adb_request *req)
3005 unsigned long flags;
3007 volatile unsigned char __iomem *v = via;
3011 l = pmu_data_len[c][0];
3012 if (l >= 0 && req->nbytes != l + 1)
3015 local_irq_save(flags);
3016 while (pmu_state != idle)
3019 while ((via[B] & TACK) == 0)
3021 polled_send_byte(v, c);
3023 l = req->nbytes - 1;
3024 polled_send_byte(v, l);
3026 for (i = 1; i <= l; ++i)
3027 polled_send_byte(v, req->data[i]);
3029 l = pmu_data_len[c][1];
3031 l = polled_recv_byte(v);
3032 for (i = 0; i < l; ++i)
3033 req->reply[i + req->reply_len] = polled_recv_byte(v);
3038 local_irq_restore(flags);
3041 #endif /* DEBUG_SLEEP */
3043 EXPORT_SYMBOL(pmu_request);
3044 EXPORT_SYMBOL(pmu_poll);
3045 EXPORT_SYMBOL(pmu_poll_adb);
3046 EXPORT_SYMBOL(pmu_wait_complete);
3047 EXPORT_SYMBOL(pmu_suspend);
3048 EXPORT_SYMBOL(pmu_resume);
3049 EXPORT_SYMBOL(pmu_unlock);
3050 EXPORT_SYMBOL(pmu_i2c_combined_read);
3051 EXPORT_SYMBOL(pmu_i2c_stdsub_write);
3052 EXPORT_SYMBOL(pmu_i2c_simple_read);
3053 EXPORT_SYMBOL(pmu_i2c_simple_write);
3054 #ifdef CONFIG_PMAC_PBOOK
3055 EXPORT_SYMBOL(pmu_register_sleep_notifier);
3056 EXPORT_SYMBOL(pmu_unregister_sleep_notifier);
3057 EXPORT_SYMBOL(pmu_enable_irled);
3058 EXPORT_SYMBOL(pmu_battery_count);
3059 EXPORT_SYMBOL(pmu_batteries);
3060 EXPORT_SYMBOL(pmu_power_flags);
3061 #endif /* CONFIG_PMAC_PBOOK */