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 * - Save/Restore PCI space properly
23 #include <linux/types.h>
24 #include <linux/errno.h>
25 #include <linux/kernel.h>
26 #include <linux/delay.h>
27 #include <linux/sched.h>
28 #include <linux/miscdevice.h>
29 #include <linux/blkdev.h>
30 #include <linux/pci.h>
31 #include <linux/slab.h>
32 #include <linux/poll.h>
33 #include <linux/adb.h>
34 #include <linux/pmu.h>
35 #include <linux/cuda.h>
36 #include <linux/smp_lock.h>
37 #include <linux/module.h>
38 #include <linux/spinlock.h>
40 #include <linux/proc_fs.h>
41 #include <linux/init.h>
42 #include <linux/interrupt.h>
43 #include <linux/device.h>
44 #include <linux/sysdev.h>
45 #include <linux/suspend.h>
46 #include <linux/syscalls.h>
47 #include <linux/cpu.h>
49 #include <asm/machdep.h>
51 #include <asm/pgtable.h>
52 #include <asm/system.h>
53 #include <asm/sections.h>
55 #include <asm/pmac_feature.h>
56 #include <asm/pmac_pfunc.h>
57 #include <asm/pmac_low_i2c.h>
58 #include <asm/uaccess.h>
59 #include <asm/mmu_context.h>
60 #include <asm/cputable.h>
62 #include <asm/backlight.h>
64 #include "via-pmu-event.h"
66 /* Some compile options */
67 #undef SUSPEND_USES_PMU
69 #undef HACKED_PCI_SAVE
71 /* Misc minor number allocated for /dev/pmu */
74 /* How many iterations between battery polls */
75 #define BATTERY_POLLING_COUNT 2
77 static volatile unsigned char __iomem
*via
;
79 /* VIA registers - spaced 0x200 bytes apart */
80 #define RS 0x200 /* skip between registers */
81 #define B 0 /* B-side data */
82 #define A RS /* A-side data */
83 #define DIRB (2*RS) /* B-side direction (1=output) */
84 #define DIRA (3*RS) /* A-side direction (1=output) */
85 #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
86 #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
87 #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
88 #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
89 #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
90 #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
91 #define SR (10*RS) /* Shift register */
92 #define ACR (11*RS) /* Auxiliary control register */
93 #define PCR (12*RS) /* Peripheral control register */
94 #define IFR (13*RS) /* Interrupt flag register */
95 #define IER (14*RS) /* Interrupt enable register */
96 #define ANH (15*RS) /* A-side data, no handshake */
98 /* Bits in B data register: both active low */
99 #define TACK 0x08 /* Transfer acknowledge (input) */
100 #define TREQ 0x10 /* Transfer request (output) */
103 #define SR_CTRL 0x1c /* Shift register control bits */
104 #define SR_EXT 0x0c /* Shift on external clock */
105 #define SR_OUT 0x10 /* Shift out if 1 */
107 /* Bits in IFR and IER */
108 #define IER_SET 0x80 /* set bits in IER */
109 #define IER_CLR 0 /* clear bits in IER */
110 #define SR_INT 0x04 /* Shift register full/empty */
112 #define CB1_INT 0x10 /* transition on CB1 input */
114 static volatile enum pmu_state
{
123 static volatile enum int_data_state
{
128 } int_data_state
[2] = { int_data_empty
, int_data_empty
};
130 static struct adb_request
*current_req
;
131 static struct adb_request
*last_req
;
132 static struct adb_request
*req_awaiting_reply
;
133 static unsigned char interrupt_data
[2][32];
134 static int interrupt_data_len
[2];
135 static int int_data_last
;
136 static unsigned char *reply_ptr
;
137 static int data_index
;
139 static volatile int adb_int_pending
;
140 static volatile int disable_poll
;
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 struct device_node
*gpio_node
;
146 static unsigned char __iomem
*gpio_reg
= NULL
;
147 static int gpio_irq
= NO_IRQ
;
148 static int gpio_irq_enabled
= -1;
149 static volatile int pmu_suspended
= 0;
150 static spinlock_t pmu_lock
;
151 static u8 pmu_intr_mask
;
152 static int pmu_version
;
153 static int drop_interrupts
;
154 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
155 static int option_lid_wakeup
= 1;
156 #endif /* CONFIG_PM && CONFIG_PPC32 */
157 #if (defined(CONFIG_PM)&&defined(CONFIG_PPC32))||defined(CONFIG_PMAC_BACKLIGHT_LEGACY)
158 static int sleep_in_progress
;
160 static unsigned long async_req_locks
;
161 static unsigned int pmu_irq_stats
[11];
163 static struct proc_dir_entry
*proc_pmu_root
;
164 static struct proc_dir_entry
*proc_pmu_info
;
165 static struct proc_dir_entry
*proc_pmu_irqstats
;
166 static struct proc_dir_entry
*proc_pmu_options
;
167 static int option_server_mode
;
169 int pmu_battery_count
;
171 unsigned int pmu_power_flags
;
172 struct pmu_battery_info pmu_batteries
[PMU_MAX_BATTERIES
];
173 static int query_batt_timer
= BATTERY_POLLING_COUNT
;
174 static struct adb_request batt_req
;
175 static struct proc_dir_entry
*proc_pmu_batt
[PMU_MAX_BATTERIES
];
179 BLOCKING_NOTIFIER_HEAD(sleep_notifier_list
);
182 static int adb_dev_map
= 0;
183 static int pmu_adb_flags
;
185 static int pmu_probe(void);
186 static int pmu_init(void);
187 static int pmu_send_request(struct adb_request
*req
, int sync
);
188 static int pmu_adb_autopoll(int devs
);
189 static int pmu_adb_reset_bus(void);
190 #endif /* CONFIG_ADB */
192 static int init_pmu(void);
193 static void pmu_start(void);
194 static irqreturn_t
via_pmu_interrupt(int irq
, void *arg
, struct pt_regs
*regs
);
195 static irqreturn_t
gpio1_interrupt(int irq
, void *arg
, struct pt_regs
*regs
);
196 static int proc_get_info(char *page
, char **start
, off_t off
,
197 int count
, int *eof
, void *data
);
198 static int proc_get_irqstats(char *page
, char **start
, off_t off
,
199 int count
, int *eof
, void *data
);
200 static void pmu_pass_intr(unsigned char *data
, int len
);
201 static int proc_get_batt(char *page
, char **start
, off_t off
,
202 int count
, int *eof
, void *data
);
203 static int proc_read_options(char *page
, char **start
, off_t off
,
204 int count
, int *eof
, void *data
);
205 static int proc_write_options(struct file
*file
, const char __user
*buffer
,
206 unsigned long count
, void *data
);
209 struct adb_driver via_pmu_driver
= {
218 #endif /* CONFIG_ADB */
220 extern void low_sleep_handler(void);
221 extern void enable_kernel_altivec(void);
222 extern void enable_kernel_fp(void);
225 int pmu_polled_request(struct adb_request
*req
);
226 int pmu_wink(struct adb_request
*req
);
230 * This table indicates for each PMU opcode:
231 * - the number of data bytes to be sent with the command, or -1
232 * if a length byte should be sent,
233 * - the number of response bytes which the PMU will return, or
234 * -1 if it will send a length byte.
236 static const s8 pmu_data_len
[256][2] = {
237 /* 0 1 2 3 4 5 6 7 */
238 /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
239 /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
240 /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
241 /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
242 /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
243 /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
244 /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
245 /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
246 /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
247 /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
248 /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
249 /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
250 /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
251 /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
252 /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
253 /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
254 /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
255 /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
256 /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
257 /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
258 /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
259 /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
260 /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
261 /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
262 /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
263 /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
264 /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
265 /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
266 /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
267 /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
268 /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
269 /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
272 static char *pbook_type
[] = {
274 "PowerBook 2400/3400/3500(G3)",
275 "PowerBook G3 Series",
280 int __init
find_via_pmu(void)
287 vias
= of_find_node_by_name(NULL
, "via-pmu");
291 reg
= (u32
*)get_property(vias
, "reg", NULL
);
293 printk(KERN_ERR
"via-pmu: No \"reg\" property !\n");
296 taddr
= of_translate_address(vias
, reg
);
297 if (taddr
== OF_BAD_ADDR
) {
298 printk(KERN_ERR
"via-pmu: Can't translate address !\n");
302 spin_lock_init(&pmu_lock
);
306 pmu_intr_mask
= PMU_INT_PCEJECT
|
311 if (vias
->parent
->name
&& ((strcmp(vias
->parent
->name
, "ohare") == 0)
312 || device_is_compatible(vias
->parent
, "ohare")))
313 pmu_kind
= PMU_OHARE_BASED
;
314 else if (device_is_compatible(vias
->parent
, "paddington"))
315 pmu_kind
= PMU_PADDINGTON_BASED
;
316 else if (device_is_compatible(vias
->parent
, "heathrow"))
317 pmu_kind
= PMU_HEATHROW_BASED
;
318 else if (device_is_compatible(vias
->parent
, "Keylargo")
319 || device_is_compatible(vias
->parent
, "K2-Keylargo")) {
320 struct device_node
*gpiop
;
321 u64 gaddr
= OF_BAD_ADDR
;
323 pmu_kind
= PMU_KEYLARGO_BASED
;
324 pmu_has_adb
= (find_type_devices("adb") != NULL
);
325 pmu_intr_mask
= PMU_INT_PCEJECT
|
331 gpiop
= of_find_node_by_name(NULL
, "gpio");
333 reg
= (u32
*)get_property(gpiop
, "reg", NULL
);
335 gaddr
= of_translate_address(gpiop
, reg
);
336 if (gaddr
!= OF_BAD_ADDR
)
337 gpio_reg
= ioremap(gaddr
, 0x10);
339 if (gpio_reg
== NULL
)
340 printk(KERN_ERR
"via-pmu: Can't find GPIO reg !\n");
342 pmu_kind
= PMU_UNKNOWN
;
344 via
= ioremap(taddr
, 0x2000);
346 printk(KERN_ERR
"via-pmu: Can't map address !\n");
350 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
351 out_8(&via
[IFR
], 0x7f); /* clear IFR */
360 printk(KERN_INFO
"PMU driver v%d initialized for %s, firmware: %02x\n",
361 PMU_DRIVER_VERSION
, pbook_type
[pmu_kind
], pmu_version
);
363 sys_ctrler
= SYS_CTRLER_PMU
;
373 static int pmu_probe(void)
375 return vias
== NULL
? -ENODEV
: 0;
378 static int __init
pmu_init(void)
384 #endif /* CONFIG_ADB */
387 * We can't wait until pmu_init gets called, that happens too late.
388 * It happens after IDE and SCSI initialization, which can take a few
389 * seconds, and by that time the PMU could have given up on us and
391 * Thus this is called with arch_initcall rather than device_initcall.
393 static int __init
via_pmu_start(void)
400 batt_req
.complete
= 1;
402 irq
= irq_of_parse_and_map(vias
, 0);
404 printk(KERN_ERR
"via-pmu: can't map interruptn");
407 if (request_irq(irq
, via_pmu_interrupt
, 0, "VIA-PMU", (void *)0)) {
408 printk(KERN_ERR
"via-pmu: can't request irq %d\n", irq
);
412 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
413 gpio_node
= of_find_node_by_name(NULL
, "extint-gpio1");
414 if (gpio_node
== NULL
)
415 gpio_node
= of_find_node_by_name(NULL
,
418 gpio_irq
= irq_of_parse_and_map(gpio_node
, 0);
420 if (gpio_irq
!= NO_IRQ
) {
421 if (request_irq(gpio_irq
, gpio1_interrupt
, 0,
422 "GPIO1 ADB", (void *)0))
423 printk(KERN_ERR
"pmu: can't get irq %d"
424 " (GPIO1)\n", gpio_irq
);
426 gpio_irq_enabled
= 1;
430 /* Enable interrupts */
431 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
433 pmu_fully_inited
= 1;
435 /* Make sure PMU settle down before continuing. This is _very_ important
436 * since the IDE probe may shut interrupts down for quite a bit of time. If
437 * a PMU communication is pending while this happens, the PMU may timeout
438 * Not that on Core99 machines, the PMU keeps sending us environement
439 * messages, we should find a way to either fix IDE or make it call
440 * pmu_suspend() before masking interrupts. This can also happens while
441 * scolling with some fbdevs.
445 } while (pmu_state
!= idle
);
450 arch_initcall(via_pmu_start
);
453 * This has to be done after pci_init, which is a subsys_initcall.
455 static int __init
via_pmu_dev_init(void)
460 #ifdef CONFIG_PMAC_BACKLIGHT
461 /* Initialize backlight */
462 pmu_backlight_init();
466 if (machine_is_compatible("AAPL,3400/2400") ||
467 machine_is_compatible("AAPL,3500")) {
468 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
469 NULL
, PMAC_MB_INFO_MODEL
, 0);
470 pmu_battery_count
= 1;
471 if (mb
== PMAC_TYPE_COMET
)
472 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_COMET
;
474 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_HOOPER
;
475 } else if (machine_is_compatible("AAPL,PowerBook1998") ||
476 machine_is_compatible("PowerBook1,1")) {
477 pmu_battery_count
= 2;
478 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
479 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
481 struct device_node
* prim
= find_devices("power-mgt");
482 u32
*prim_info
= NULL
;
484 prim_info
= (u32
*)get_property(prim
, "prim-info", NULL
);
486 /* Other stuffs here yet unknown */
487 pmu_battery_count
= (prim_info
[6] >> 16) & 0xff;
488 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
489 if (pmu_battery_count
> 1)
490 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
493 #endif /* CONFIG_PPC32 */
495 /* Create /proc/pmu */
496 proc_pmu_root
= proc_mkdir("pmu", NULL
);
500 for (i
=0; i
<pmu_battery_count
; i
++) {
502 sprintf(title
, "battery_%ld", i
);
503 proc_pmu_batt
[i
] = create_proc_read_entry(title
, 0, proc_pmu_root
,
504 proc_get_batt
, (void *)i
);
507 proc_pmu_info
= create_proc_read_entry("info", 0, proc_pmu_root
,
508 proc_get_info
, NULL
);
509 proc_pmu_irqstats
= create_proc_read_entry("interrupts", 0, proc_pmu_root
,
510 proc_get_irqstats
, NULL
);
511 proc_pmu_options
= create_proc_entry("options", 0600, proc_pmu_root
);
512 if (proc_pmu_options
) {
513 proc_pmu_options
->nlink
= 1;
514 proc_pmu_options
->read_proc
= proc_read_options
;
515 proc_pmu_options
->write_proc
= proc_write_options
;
521 device_initcall(via_pmu_dev_init
);
527 struct adb_request req
;
529 out_8(&via
[B
], via
[B
] | TREQ
); /* negate TREQ */
530 out_8(&via
[DIRB
], (via
[DIRB
] | TREQ
) & ~TACK
); /* TACK in, TREQ out */
532 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
534 while (!req
.complete
) {
536 printk(KERN_ERR
"init_pmu: no response from PMU\n");
543 /* ack all pending interrupts */
545 interrupt_data
[0][0] = 1;
546 while (interrupt_data
[0][0] || pmu_state
!= idle
) {
548 printk(KERN_ERR
"init_pmu: timed out acking intrs\n");
551 if (pmu_state
== idle
)
553 via_pmu_interrupt(0, NULL
, NULL
);
557 /* Tell PMU we are ready. */
558 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
559 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
560 while (!req
.complete
)
564 /* Read PMU version */
565 pmu_request(&req
, NULL
, 1, PMU_GET_VERSION
);
566 pmu_wait_complete(&req
);
567 if (req
.reply_len
> 0)
568 pmu_version
= req
.reply
[0];
570 /* Read server mode setting */
571 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
572 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
,
573 PMU_PWR_GET_POWERUP_EVENTS
);
574 pmu_wait_complete(&req
);
575 if (req
.reply_len
== 2) {
576 if (req
.reply
[1] & PMU_PWR_WAKEUP_AC_INSERT
)
577 option_server_mode
= 1;
578 printk(KERN_INFO
"via-pmu: Server Mode is %s\n",
579 option_server_mode
? "enabled" : "disabled");
591 static void pmu_set_server_mode(int server_mode
)
593 struct adb_request req
;
595 if (pmu_kind
!= PMU_KEYLARGO_BASED
)
598 option_server_mode
= server_mode
;
599 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
, PMU_PWR_GET_POWERUP_EVENTS
);
600 pmu_wait_complete(&req
);
601 if (req
.reply_len
< 2)
604 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
605 PMU_PWR_SET_POWERUP_EVENTS
,
606 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
608 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
609 PMU_PWR_CLR_POWERUP_EVENTS
,
610 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
611 pmu_wait_complete(&req
);
614 /* This new version of the code for 2400/3400/3500 powerbooks
615 * is inspired from the implementation in gkrellm-pmu
618 done_battery_state_ohare(struct adb_request
* req
)
622 * 0x01 : AC indicator
624 * 0x04 : battery exist
627 * 0x20 : full charged
628 * 0x40 : pcharge reset
629 * 0x80 : battery exist
631 * [1][2] : battery voltage
632 * [3] : CPU temperature
633 * [4] : battery temperature
638 unsigned int bat_flags
= PMU_BATT_TYPE_HOOPER
;
639 long pcharge
, charge
, vb
, vmax
, lmax
;
640 long vmax_charging
, vmax_charged
;
641 long amperage
, voltage
, time
, max
;
642 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
643 NULL
, PMAC_MB_INFO_MODEL
, 0);
645 if (req
->reply
[0] & 0x01)
646 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
648 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
650 if (mb
== PMAC_TYPE_COMET
) {
661 /* If battery installed */
662 if (req
->reply
[0] & 0x04) {
663 bat_flags
|= PMU_BATT_PRESENT
;
664 if (req
->reply
[0] & 0x02)
665 bat_flags
|= PMU_BATT_CHARGING
;
666 vb
= (req
->reply
[1] << 8) | req
->reply
[2];
667 voltage
= (vb
* 265 + 72665) / 10;
668 amperage
= req
->reply
[5];
669 if ((req
->reply
[0] & 0x01) == 0) {
671 vb
+= ((amperage
- 200) * 15)/100;
672 } else if (req
->reply
[0] & 0x02) {
673 vb
= (vb
* 97) / 100;
674 vmax
= vmax_charging
;
676 charge
= (100 * vb
) / vmax
;
677 if (req
->reply
[0] & 0x40) {
678 pcharge
= (req
->reply
[6] << 8) + req
->reply
[7];
682 pcharge
= 100 - pcharge
/ lmax
;
683 if (pcharge
< charge
)
687 time
= (charge
* 16440) / amperage
;
691 amperage
= -amperage
;
693 charge
= max
= amperage
= voltage
= time
= 0;
695 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
696 pmu_batteries
[pmu_cur_battery
].charge
= charge
;
697 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
698 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
699 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
700 pmu_batteries
[pmu_cur_battery
].time_remaining
= time
;
702 clear_bit(0, &async_req_locks
);
706 done_battery_state_smart(struct adb_request
* req
)
709 * [0] : format of this structure (known: 3,4,5)
722 * [4][5] : max charge
727 unsigned int bat_flags
= PMU_BATT_TYPE_SMART
;
729 unsigned int capa
, max
, voltage
;
731 if (req
->reply
[1] & 0x01)
732 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
734 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
737 capa
= max
= amperage
= voltage
= 0;
739 if (req
->reply
[1] & 0x04) {
740 bat_flags
|= PMU_BATT_PRESENT
;
741 switch(req
->reply
[0]) {
743 case 4: capa
= req
->reply
[2];
745 amperage
= *((signed char *)&req
->reply
[4]);
746 voltage
= req
->reply
[5];
748 case 5: capa
= (req
->reply
[2] << 8) | req
->reply
[3];
749 max
= (req
->reply
[4] << 8) | req
->reply
[5];
750 amperage
= *((signed short *)&req
->reply
[6]);
751 voltage
= (req
->reply
[8] << 8) | req
->reply
[9];
754 printk(KERN_WARNING
"pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
755 req
->reply_len
, req
->reply
[0], req
->reply
[1], req
->reply
[2], req
->reply
[3]);
760 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
761 bat_flags
|= PMU_BATT_CHARGING
;
763 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
764 pmu_batteries
[pmu_cur_battery
].charge
= capa
;
765 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
766 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
767 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
769 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
770 pmu_batteries
[pmu_cur_battery
].time_remaining
771 = ((max
-capa
) * 3600) / amperage
;
773 pmu_batteries
[pmu_cur_battery
].time_remaining
774 = (capa
* 3600) / (-amperage
);
776 pmu_batteries
[pmu_cur_battery
].time_remaining
= 0;
778 pmu_cur_battery
= (pmu_cur_battery
+ 1) % pmu_battery_count
;
780 clear_bit(0, &async_req_locks
);
784 query_battery_state(void)
786 if (test_and_set_bit(0, &async_req_locks
))
788 if (pmu_kind
== PMU_OHARE_BASED
)
789 pmu_request(&batt_req
, done_battery_state_ohare
,
790 1, PMU_BATTERY_STATE
);
792 pmu_request(&batt_req
, done_battery_state_smart
,
793 2, PMU_SMART_BATTERY_STATE
, pmu_cur_battery
+1);
797 proc_get_info(char *page
, char **start
, off_t off
,
798 int count
, int *eof
, void *data
)
802 p
+= sprintf(p
, "PMU driver version : %d\n", PMU_DRIVER_VERSION
);
803 p
+= sprintf(p
, "PMU firmware version : %02x\n", pmu_version
);
804 p
+= sprintf(p
, "AC Power : %d\n",
805 ((pmu_power_flags
& PMU_PWR_AC_PRESENT
) != 0) || pmu_battery_count
== 0);
806 p
+= sprintf(p
, "Battery count : %d\n", pmu_battery_count
);
812 proc_get_irqstats(char *page
, char **start
, off_t off
,
813 int count
, int *eof
, void *data
)
817 static const char *irq_names
[] = {
818 "Total CB1 triggered events",
819 "Total GPIO1 triggered events",
820 "PC-Card eject button",
821 "Sound/Brightness button",
823 "Battery state change",
824 "Environment interrupt",
826 "Ghost interrupt (zero len)",
827 "Empty interrupt (empty mask)",
831 for (i
=0; i
<11; i
++) {
832 p
+= sprintf(p
, " %2u: %10u (%s)\n",
833 i
, pmu_irq_stats
[i
], irq_names
[i
]);
839 proc_get_batt(char *page
, char **start
, off_t off
,
840 int count
, int *eof
, void *data
)
842 long batnum
= (long)data
;
845 p
+= sprintf(p
, "\n");
846 p
+= sprintf(p
, "flags : %08x\n",
847 pmu_batteries
[batnum
].flags
);
848 p
+= sprintf(p
, "charge : %d\n",
849 pmu_batteries
[batnum
].charge
);
850 p
+= sprintf(p
, "max_charge : %d\n",
851 pmu_batteries
[batnum
].max_charge
);
852 p
+= sprintf(p
, "current : %d\n",
853 pmu_batteries
[batnum
].amperage
);
854 p
+= sprintf(p
, "voltage : %d\n",
855 pmu_batteries
[batnum
].voltage
);
856 p
+= sprintf(p
, "time rem. : %d\n",
857 pmu_batteries
[batnum
].time_remaining
);
863 proc_read_options(char *page
, char **start
, off_t off
,
864 int count
, int *eof
, void *data
)
868 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
869 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
870 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
871 p
+= sprintf(p
, "lid_wakeup=%d\n", option_lid_wakeup
);
873 if (pmu_kind
== PMU_KEYLARGO_BASED
)
874 p
+= sprintf(p
, "server_mode=%d\n", option_server_mode
);
880 proc_write_options(struct file
*file
, const char __user
*buffer
,
881 unsigned long count
, void *data
)
885 unsigned long fcount
= count
;
891 if (copy_from_user(tmp
, buffer
, count
))
899 while(*val
&& (*val
!= '=')) {
909 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
910 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
911 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
912 if (!strcmp(label
, "lid_wakeup"))
913 option_lid_wakeup
= ((*val
) == '1');
915 if (pmu_kind
== PMU_KEYLARGO_BASED
&& !strcmp(label
, "server_mode")) {
917 new_value
= ((*val
) == '1');
918 if (new_value
!= option_server_mode
)
919 pmu_set_server_mode(new_value
);
925 /* Send an ADB command */
927 pmu_send_request(struct adb_request
*req
, int sync
)
931 if ((vias
== NULL
) || (!pmu_fully_inited
)) {
938 switch (req
->data
[0]) {
940 for (i
= 0; i
< req
->nbytes
- 1; ++i
)
941 req
->data
[i
] = req
->data
[i
+1];
943 if (pmu_data_len
[req
->data
[0]][1] != 0) {
944 req
->reply
[0] = ADB_RET_OK
;
948 ret
= pmu_queue_request(req
);
951 switch (req
->data
[1]) {
953 if (req
->nbytes
!= 2)
955 req
->data
[0] = PMU_READ_RTC
;
958 req
->reply
[0] = CUDA_PACKET
;
960 req
->reply
[2] = CUDA_GET_TIME
;
961 ret
= pmu_queue_request(req
);
964 if (req
->nbytes
!= 6)
966 req
->data
[0] = PMU_SET_RTC
;
968 for (i
= 1; i
<= 4; ++i
)
969 req
->data
[i
] = req
->data
[i
+1];
971 req
->reply
[0] = CUDA_PACKET
;
973 req
->reply
[2] = CUDA_SET_TIME
;
974 ret
= pmu_queue_request(req
);
981 for (i
= req
->nbytes
- 1; i
> 1; --i
)
982 req
->data
[i
+2] = req
->data
[i
];
983 req
->data
[3] = req
->nbytes
- 2;
984 req
->data
[2] = pmu_adb_flags
;
985 /*req->data[1] = req->data[1];*/
986 req
->data
[0] = PMU_ADB_CMD
;
988 req
->reply_expected
= 1;
990 ret
= pmu_queue_request(req
);
999 while (!req
->complete
)
1005 /* Enable/disable autopolling */
1007 pmu_adb_autopoll(int devs
)
1009 struct adb_request req
;
1011 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1016 pmu_request(&req
, NULL
, 5, PMU_ADB_CMD
, 0, 0x86,
1017 adb_dev_map
>> 8, adb_dev_map
);
1020 pmu_request(&req
, NULL
, 1, PMU_ADB_POLL_OFF
);
1023 while (!req
.complete
)
1028 /* Reset the ADB bus */
1030 pmu_adb_reset_bus(void)
1032 struct adb_request req
;
1033 int save_autopoll
= adb_dev_map
;
1035 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1038 /* anyone got a better idea?? */
1039 pmu_adb_autopoll(0);
1043 req
.data
[0] = PMU_ADB_CMD
;
1045 req
.data
[2] = ADB_BUSRESET
;
1049 req
.reply_expected
= 1;
1050 if (pmu_queue_request(&req
) != 0) {
1051 printk(KERN_ERR
"pmu_adb_reset_bus: pmu_queue_request failed\n");
1054 pmu_wait_complete(&req
);
1056 if (save_autopoll
!= 0)
1057 pmu_adb_autopoll(save_autopoll
);
1061 #endif /* CONFIG_ADB */
1063 /* Construct and send a pmu request */
1065 pmu_request(struct adb_request
*req
, void (*done
)(struct adb_request
*),
1074 if (nbytes
< 0 || nbytes
> 32) {
1075 printk(KERN_ERR
"pmu_request: bad nbytes (%d)\n", nbytes
);
1079 req
->nbytes
= nbytes
;
1081 va_start(list
, nbytes
);
1082 for (i
= 0; i
< nbytes
; ++i
)
1083 req
->data
[i
] = va_arg(list
, int);
1086 req
->reply_expected
= 0;
1087 return pmu_queue_request(req
);
1091 pmu_queue_request(struct adb_request
*req
)
1093 unsigned long flags
;
1100 if (req
->nbytes
<= 0) {
1104 nsend
= pmu_data_len
[req
->data
[0]][0];
1105 if (nsend
>= 0 && req
->nbytes
!= nsend
+ 1) {
1114 spin_lock_irqsave(&pmu_lock
, flags
);
1115 if (current_req
!= 0) {
1116 last_req
->next
= req
;
1121 if (pmu_state
== idle
)
1124 spin_unlock_irqrestore(&pmu_lock
, flags
);
1132 /* Sightly increased the delay, I had one occurrence of the message
1136 while ((in_8(&via
[B
]) & TACK
) == 0) {
1137 if (--timeout
< 0) {
1138 printk(KERN_ERR
"PMU not responding (!ack)\n");
1145 /* New PMU seems to be very sensitive to those timings, so we make sure
1146 * PCI is flushed immediately */
1150 volatile unsigned char __iomem
*v
= via
;
1152 out_8(&v
[ACR
], in_8(&v
[ACR
]) | SR_OUT
| SR_EXT
);
1154 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
); /* assert TREQ */
1161 volatile unsigned char __iomem
*v
= via
;
1163 out_8(&v
[ACR
], (in_8(&v
[ACR
]) & ~SR_OUT
) | SR_EXT
);
1164 in_8(&v
[SR
]); /* resets SR */
1165 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
);
1170 pmu_done(struct adb_request
*req
)
1172 void (*done
)(struct adb_request
*) = req
->done
;
1175 /* Here, we assume that if the request has a done member, the
1176 * struct request will survive to setting req->complete to 1
1185 struct adb_request
*req
;
1187 /* assert pmu_state == idle */
1188 /* get the packet to send */
1190 if (req
== 0 || pmu_state
!= idle
1191 || (/*req->reply_expected && */req_awaiting_reply
))
1194 pmu_state
= sending
;
1196 data_len
= pmu_data_len
[req
->data
[0]][0];
1198 /* Sounds safer to make sure ACK is high before writing. This helped
1199 * kill a problem with ADB and some iBooks
1202 /* set the shift register to shift out and send a byte */
1203 send_byte(req
->data
[0]);
1213 via_pmu_interrupt(0, NULL
, NULL
);
1223 /* Kicks ADB read when PMU is suspended */
1224 adb_int_pending
= 1;
1226 via_pmu_interrupt(0, NULL
, NULL
);
1227 } while (pmu_suspended
&& (adb_int_pending
|| pmu_state
!= idle
1228 || req_awaiting_reply
));
1232 pmu_wait_complete(struct adb_request
*req
)
1236 while((pmu_state
!= idle
&& pmu_state
!= locked
) || !req
->complete
)
1237 via_pmu_interrupt(0, NULL
, NULL
);
1240 /* This function loops until the PMU is idle and prevents it from
1241 * anwsering to ADB interrupts. pmu_request can still be called.
1242 * This is done to avoid spurrious shutdowns when we know we'll have
1243 * interrupts switched off for a long time
1248 unsigned long flags
;
1249 #ifdef SUSPEND_USES_PMU
1250 struct adb_request
*req
;
1255 spin_lock_irqsave(&pmu_lock
, flags
);
1257 if (pmu_suspended
> 1) {
1258 spin_unlock_irqrestore(&pmu_lock
, flags
);
1263 spin_unlock_irqrestore(&pmu_lock
, flags
);
1264 if (req_awaiting_reply
)
1265 adb_int_pending
= 1;
1266 via_pmu_interrupt(0, NULL
, NULL
);
1267 spin_lock_irqsave(&pmu_lock
, flags
);
1268 if (!adb_int_pending
&& pmu_state
== idle
&& !req_awaiting_reply
) {
1269 #ifdef SUSPEND_USES_PMU
1270 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
1271 spin_unlock_irqrestore(&pmu_lock
, flags
);
1272 while(!req
.complete
)
1274 #else /* SUSPEND_USES_PMU */
1276 disable_irq_nosync(gpio_irq
);
1277 out_8(&via
[IER
], CB1_INT
| IER_CLR
);
1278 spin_unlock_irqrestore(&pmu_lock
, flags
);
1279 #endif /* SUSPEND_USES_PMU */
1288 unsigned long flags
;
1290 if (!via
|| (pmu_suspended
< 1))
1293 spin_lock_irqsave(&pmu_lock
, flags
);
1295 if (pmu_suspended
> 0) {
1296 spin_unlock_irqrestore(&pmu_lock
, flags
);
1299 adb_int_pending
= 1;
1300 #ifdef SUSPEND_USES_PMU
1301 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
1302 spin_unlock_irqrestore(&pmu_lock
, flags
);
1303 while(!req
.complete
)
1305 #else /* SUSPEND_USES_PMU */
1307 enable_irq(gpio_irq
);
1308 out_8(&via
[IER
], CB1_INT
| IER_SET
);
1309 spin_unlock_irqrestore(&pmu_lock
, flags
);
1311 #endif /* SUSPEND_USES_PMU */
1314 /* Interrupt data could be the result data from an ADB cmd */
1316 pmu_handle_data(unsigned char *data
, int len
, struct pt_regs
*regs
)
1318 unsigned char ints
, pirq
;
1322 if (drop_interrupts
|| len
< 1) {
1323 adb_int_pending
= 0;
1328 /* Get PMU interrupt mask */
1331 /* Record zero interrupts for stats */
1335 /* Hack to deal with ADB autopoll flag */
1336 if (ints
& PMU_INT_ADB
)
1337 ints
&= ~(PMU_INT_ADB_AUTO
| PMU_INT_AUTO_SRQ_POLL
);
1342 if (i
> pmu_irq_stats
[10])
1343 pmu_irq_stats
[10] = i
;
1347 for (pirq
= 0; pirq
< 8; pirq
++)
1348 if (ints
& (1 << pirq
))
1350 pmu_irq_stats
[pirq
]++;
1352 ints
&= ~(1 << pirq
);
1354 /* Note: for some reason, we get an interrupt with len=1,
1355 * data[0]==0 after each normal ADB interrupt, at least
1356 * on the Pismo. Still investigating... --BenH
1358 if ((1 << pirq
) & PMU_INT_ADB
) {
1359 if ((data
[0] & PMU_INT_ADB_AUTO
) == 0) {
1360 struct adb_request
*req
= req_awaiting_reply
;
1362 printk(KERN_ERR
"PMU: extra ADB reply\n");
1365 req_awaiting_reply
= NULL
;
1369 memcpy(req
->reply
, data
+ 1, len
- 1);
1370 req
->reply_len
= len
- 1;
1374 if (len
== 4 && data
[1] == 0x2c) {
1375 extern int xmon_wants_key
, xmon_adb_keycode
;
1376 if (xmon_wants_key
) {
1377 xmon_adb_keycode
= data
[2];
1383 * XXX On the [23]400 the PMU gives us an up
1384 * event for keycodes 0x74 or 0x75 when the PC
1385 * card eject buttons are released, so we
1386 * ignore those events.
1388 if (!(pmu_kind
== PMU_OHARE_BASED
&& len
== 4
1389 && data
[1] == 0x2c && data
[3] == 0xff
1390 && (data
[2] & ~1) == 0xf4))
1391 adb_input(data
+1, len
-1, regs
, 1);
1392 #endif /* CONFIG_ADB */
1395 /* Sound/brightness button pressed */
1396 else if ((1 << pirq
) & PMU_INT_SNDBRT
) {
1397 #ifdef CONFIG_PMAC_BACKLIGHT
1399 pmac_backlight_set_legacy_brightness_pmu(data
[1] >> 4);
1402 /* Tick interrupt */
1403 else if ((1 << pirq
) & PMU_INT_TICK
) {
1404 /* Environement or tick interrupt, query batteries */
1405 if (pmu_battery_count
) {
1406 if ((--query_batt_timer
) == 0) {
1407 query_battery_state();
1408 query_batt_timer
= BATTERY_POLLING_COUNT
;
1412 else if ((1 << pirq
) & PMU_INT_ENVIRONMENT
) {
1413 if (pmu_battery_count
)
1414 query_battery_state();
1415 pmu_pass_intr(data
, len
);
1416 /* len == 6 is probably a bad check. But how do I
1417 * know what PMU versions send what events here? */
1419 via_pmu_event(PMU_EVT_POWER
, !!(data
[1]&8));
1420 via_pmu_event(PMU_EVT_LID
, data
[1]&1);
1423 pmu_pass_intr(data
, len
);
1428 static struct adb_request
*
1429 pmu_sr_intr(struct pt_regs
*regs
)
1431 struct adb_request
*req
;
1434 if (via
[B
] & TREQ
) {
1435 printk(KERN_ERR
"PMU: spurious SR intr (%x)\n", via
[B
]);
1436 out_8(&via
[IFR
], SR_INT
);
1439 /* The ack may not yet be low when we get the interrupt */
1440 while ((in_8(&via
[B
]) & TACK
) != 0)
1443 /* if reading grab the byte, and reset the interrupt */
1444 if (pmu_state
== reading
|| pmu_state
== reading_intr
)
1445 bite
= in_8(&via
[SR
]);
1447 /* reset TREQ and wait for TACK to go high */
1448 out_8(&via
[B
], in_8(&via
[B
]) | TREQ
);
1451 switch (pmu_state
) {
1455 data_len
= req
->nbytes
- 1;
1456 send_byte(data_len
);
1459 if (data_index
<= data_len
) {
1460 send_byte(req
->data
[data_index
++]);
1464 data_len
= pmu_data_len
[req
->data
[0]][1];
1465 if (data_len
== 0) {
1467 current_req
= req
->next
;
1468 if (req
->reply_expected
)
1469 req_awaiting_reply
= req
;
1473 pmu_state
= reading
;
1475 reply_ptr
= req
->reply
+ req
->reply_len
;
1483 pmu_state
= reading_intr
;
1484 reply_ptr
= interrupt_data
[int_data_last
];
1486 if (gpio_irq
>= 0 && !gpio_irq_enabled
) {
1487 enable_irq(gpio_irq
);
1488 gpio_irq_enabled
= 1;
1494 if (data_len
== -1) {
1497 printk(KERN_ERR
"PMU: bad reply len %d\n", bite
);
1498 } else if (data_index
< 32) {
1499 reply_ptr
[data_index
++] = bite
;
1501 if (data_index
< data_len
) {
1506 if (pmu_state
== reading_intr
) {
1508 int_data_state
[int_data_last
] = int_data_ready
;
1509 interrupt_data_len
[int_data_last
] = data_len
;
1513 * For PMU sleep and freq change requests, we lock the
1514 * PMU until it's explicitely unlocked. This avoids any
1515 * spurrious event polling getting in
1517 current_req
= req
->next
;
1518 req
->reply_len
+= data_index
;
1519 if (req
->data
[0] == PMU_SLEEP
|| req
->data
[0] == PMU_CPU_SPEED
)
1528 printk(KERN_ERR
"via_pmu_interrupt: unknown state %d?\n",
1535 via_pmu_interrupt(int irq
, void *arg
, struct pt_regs
*regs
)
1537 unsigned long flags
;
1541 struct adb_request
*req
= NULL
;
1544 /* This is a bit brutal, we can probably do better */
1545 spin_lock_irqsave(&pmu_lock
, flags
);
1549 intr
= in_8(&via
[IFR
]) & (SR_INT
| CB1_INT
);
1553 if (++nloop
> 1000) {
1554 printk(KERN_DEBUG
"PMU: stuck in intr loop, "
1555 "intr=%x, ier=%x pmu_state=%d\n",
1556 intr
, in_8(&via
[IER
]), pmu_state
);
1559 out_8(&via
[IFR
], intr
);
1560 if (intr
& CB1_INT
) {
1561 adb_int_pending
= 1;
1564 if (intr
& SR_INT
) {
1565 req
= pmu_sr_intr(regs
);
1572 if (pmu_state
== idle
) {
1573 if (adb_int_pending
) {
1574 if (int_data_state
[0] == int_data_empty
)
1576 else if (int_data_state
[1] == int_data_empty
)
1581 int_data_state
[int_data_last
] = int_data_fill
;
1582 /* Sounds safer to make sure ACK is high before writing.
1583 * This helped kill a problem with ADB and some iBooks
1586 send_byte(PMU_INT_ACK
);
1587 adb_int_pending
= 0;
1588 } else if (current_req
)
1592 /* Mark the oldest buffer for flushing */
1593 if (int_data_state
[!int_data_last
] == int_data_ready
) {
1594 int_data_state
[!int_data_last
] = int_data_flush
;
1595 int_data
= !int_data_last
;
1596 } else if (int_data_state
[int_data_last
] == int_data_ready
) {
1597 int_data_state
[int_data_last
] = int_data_flush
;
1598 int_data
= int_data_last
;
1601 spin_unlock_irqrestore(&pmu_lock
, flags
);
1603 /* Deal with completed PMU requests outside of the lock */
1609 /* Deal with interrupt datas outside of the lock */
1610 if (int_data
>= 0) {
1611 pmu_handle_data(interrupt_data
[int_data
], interrupt_data_len
[int_data
], regs
);
1612 spin_lock_irqsave(&pmu_lock
, flags
);
1614 int_data_state
[int_data
] = int_data_empty
;
1619 return IRQ_RETVAL(handled
);
1625 unsigned long flags
;
1627 spin_lock_irqsave(&pmu_lock
, flags
);
1628 if (pmu_state
== locked
)
1630 adb_int_pending
= 1;
1631 spin_unlock_irqrestore(&pmu_lock
, flags
);
1636 gpio1_interrupt(int irq
, void *arg
, struct pt_regs
*regs
)
1638 unsigned long flags
;
1640 if ((in_8(gpio_reg
+ 0x9) & 0x02) == 0) {
1641 spin_lock_irqsave(&pmu_lock
, flags
);
1642 if (gpio_irq_enabled
> 0) {
1643 disable_irq_nosync(gpio_irq
);
1644 gpio_irq_enabled
= 0;
1647 adb_int_pending
= 1;
1648 spin_unlock_irqrestore(&pmu_lock
, flags
);
1649 via_pmu_interrupt(0, NULL
, NULL
);
1656 pmu_enable_irled(int on
)
1658 struct adb_request req
;
1662 if (pmu_kind
== PMU_KEYLARGO_BASED
)
1665 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
, PMU_POW_IRLED
|
1666 (on
? PMU_POW_ON
: PMU_POW_OFF
));
1667 pmu_wait_complete(&req
);
1673 struct adb_request req
;
1678 local_irq_disable();
1680 drop_interrupts
= 1;
1682 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1683 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1685 while(!req
.complete
)
1689 pmu_request(&req
, NULL
, 1, PMU_RESET
);
1690 pmu_wait_complete(&req
);
1698 struct adb_request req
;
1703 local_irq_disable();
1705 drop_interrupts
= 1;
1707 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1708 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1710 pmu_wait_complete(&req
);
1712 /* Disable server mode on shutdown or we'll just
1715 pmu_set_server_mode(0);
1718 pmu_request(&req
, NULL
, 5, PMU_SHUTDOWN
,
1719 'M', 'A', 'T', 'T');
1720 pmu_wait_complete(&req
);
1733 static LIST_HEAD(sleep_notifiers
);
1736 pmu_register_sleep_notifier(struct pmu_sleep_notifier
*n
)
1738 struct list_head
*list
;
1739 struct pmu_sleep_notifier
*notifier
;
1741 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
1742 list
= list
->next
) {
1743 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1744 if (n
->priority
> notifier
->priority
)
1747 __list_add(&n
->list
, list
->prev
, list
);
1750 EXPORT_SYMBOL(pmu_register_sleep_notifier
);
1753 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier
* n
)
1755 if (n
->list
.next
== 0)
1758 n
->list
.next
= NULL
;
1761 EXPORT_SYMBOL(pmu_unregister_sleep_notifier
);
1762 #endif /* CONFIG_PM */
1764 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
1766 /* Sleep is broadcast last-to-first */
1768 broadcast_sleep(int when
, int fallback
)
1770 int ret
= PBOOK_SLEEP_OK
;
1771 struct list_head
*list
;
1772 struct pmu_sleep_notifier
*notifier
;
1774 for (list
= sleep_notifiers
.prev
; list
!= &sleep_notifiers
;
1775 list
= list
->prev
) {
1776 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1777 ret
= notifier
->notifier_call(notifier
, when
);
1778 if (ret
!= PBOOK_SLEEP_OK
) {
1779 printk(KERN_DEBUG
"sleep %d rejected by %p (%p)\n",
1780 when
, notifier
, notifier
->notifier_call
);
1781 for (; list
!= &sleep_notifiers
; list
= list
->next
) {
1782 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1783 notifier
->notifier_call(notifier
, fallback
);
1791 /* Wake is broadcast first-to-last */
1793 broadcast_wake(void)
1795 int ret
= PBOOK_SLEEP_OK
;
1796 struct list_head
*list
;
1797 struct pmu_sleep_notifier
*notifier
;
1799 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
1800 list
= list
->next
) {
1801 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1802 notifier
->notifier_call(notifier
, PBOOK_WAKE
);
1808 * This struct is used to store config register values for
1809 * PCI devices which may get powered off when we sleep.
1811 static struct pci_save
{
1812 #ifndef HACKED_PCI_SAVE
1821 static int pbook_npci_saves
;
1824 pbook_alloc_pci_save(void)
1827 struct pci_dev
*pd
= NULL
;
1830 while ((pd
= pci_find_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1835 pbook_pci_saves
= (struct pci_save
*)
1836 kmalloc(npci
* sizeof(struct pci_save
), GFP_KERNEL
);
1837 pbook_npci_saves
= npci
;
1841 pbook_free_pci_save(void)
1843 if (pbook_pci_saves
== NULL
)
1845 kfree(pbook_pci_saves
);
1846 pbook_pci_saves
= NULL
;
1847 pbook_npci_saves
= 0;
1851 pbook_pci_save(void)
1853 struct pci_save
*ps
= pbook_pci_saves
;
1854 struct pci_dev
*pd
= NULL
;
1855 int npci
= pbook_npci_saves
;
1860 while ((pd
= pci_find_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1863 #ifndef HACKED_PCI_SAVE
1864 pci_read_config_word(pd
, PCI_COMMAND
, &ps
->command
);
1865 pci_read_config_word(pd
, PCI_CACHE_LINE_SIZE
, &ps
->cache_lat
);
1866 pci_read_config_word(pd
, PCI_INTERRUPT_LINE
, &ps
->intr
);
1867 pci_read_config_dword(pd
, PCI_ROM_ADDRESS
, &ps
->rom_address
);
1871 pci_read_config_dword(pd
, i
<<4, &ps
->config
[i
]);
1877 /* For this to work, we must take care of a few things: If gmac was enabled
1878 * during boot, it will be in the pci dev list. If it's disabled at this point
1879 * (and it will probably be), then you can't access it's config space.
1882 pbook_pci_restore(void)
1885 struct pci_save
*ps
= pbook_pci_saves
- 1;
1886 struct pci_dev
*pd
= NULL
;
1887 int npci
= pbook_npci_saves
;
1890 while ((pd
= pci_find_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1891 #ifdef HACKED_PCI_SAVE
1897 pci_write_config_dword(pd
, i
<<4, ps
->config
[i
]);
1898 pci_write_config_dword(pd
, 4, ps
->config
[1]);
1903 if (ps
->command
== 0)
1905 pci_read_config_word(pd
, PCI_COMMAND
, &cmd
);
1906 if ((ps
->command
& ~cmd
) == 0)
1908 switch (pd
->hdr_type
) {
1909 case PCI_HEADER_TYPE_NORMAL
:
1910 for (j
= 0; j
< 6; ++j
)
1911 pci_write_config_dword(pd
,
1912 PCI_BASE_ADDRESS_0
+ j
*4,
1913 pd
->resource
[j
].start
);
1914 pci_write_config_dword(pd
, PCI_ROM_ADDRESS
,
1916 pci_write_config_word(pd
, PCI_CACHE_LINE_SIZE
,
1918 pci_write_config_word(pd
, PCI_INTERRUPT_LINE
,
1920 pci_write_config_word(pd
, PCI_COMMAND
, ps
->command
);
1928 /* N.B. This doesn't work on the 3400 */
1932 struct adb_request req
;
1934 memset(&req
, 0, sizeof(req
));
1936 for (; n
> 0; --n
) {
1943 req
.reply
[0] = ADB_RET_OK
;
1945 req
.reply_expected
= 0;
1946 pmu_polled_request(&req
);
1954 req
.reply
[0] = ADB_RET_OK
;
1956 req
.reply_expected
= 0;
1957 pmu_polled_request(&req
);
1965 * Put the powerbook to sleep.
1968 static u32 save_via
[8];
1971 save_via_state(void)
1973 save_via
[0] = in_8(&via
[ANH
]);
1974 save_via
[1] = in_8(&via
[DIRA
]);
1975 save_via
[2] = in_8(&via
[B
]);
1976 save_via
[3] = in_8(&via
[DIRB
]);
1977 save_via
[4] = in_8(&via
[PCR
]);
1978 save_via
[5] = in_8(&via
[ACR
]);
1979 save_via
[6] = in_8(&via
[T1CL
]);
1980 save_via
[7] = in_8(&via
[T1CH
]);
1983 restore_via_state(void)
1985 out_8(&via
[ANH
], save_via
[0]);
1986 out_8(&via
[DIRA
], save_via
[1]);
1987 out_8(&via
[B
], save_via
[2]);
1988 out_8(&via
[DIRB
], save_via
[3]);
1989 out_8(&via
[PCR
], save_via
[4]);
1990 out_8(&via
[ACR
], save_via
[5]);
1991 out_8(&via
[T1CL
], save_via
[6]);
1992 out_8(&via
[T1CH
], save_via
[7]);
1993 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
1994 out_8(&via
[IFR
], 0x7f); /* clear IFR */
1995 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
1998 extern void pmu_backlight_set_sleep(int sleep
);
2001 pmac_suspend_devices(void)
2005 pm_prepare_console();
2007 /* Notify old-style device drivers & userland */
2008 ret
= broadcast_sleep(PBOOK_SLEEP_REQUEST
, PBOOK_SLEEP_REJECT
);
2009 if (ret
!= PBOOK_SLEEP_OK
) {
2010 printk(KERN_ERR
"Sleep rejected by drivers\n");
2014 /* Sync the disks. */
2015 /* XXX It would be nice to have some way to ensure that
2016 * nobody is dirtying any new buffers while we wait. That
2017 * could be achieved using the refrigerator for processes
2022 /* Sleep can fail now. May not be very robust but useful for debugging */
2023 ret
= broadcast_sleep(PBOOK_SLEEP_NOW
, PBOOK_WAKE
);
2024 if (ret
!= PBOOK_SLEEP_OK
) {
2025 printk(KERN_ERR
"Driver sleep failed\n");
2029 /* Send suspend call to devices, hold the device core's dpm_sem */
2030 ret
= device_suspend(PMSG_SUSPEND
);
2033 printk(KERN_ERR
"Driver sleep failed\n");
2037 #ifdef CONFIG_PMAC_BACKLIGHT
2038 /* Tell backlight code not to muck around with the chip anymore */
2039 pmu_backlight_set_sleep(1);
2042 /* Call platform functions marked "on sleep" */
2043 pmac_pfunc_i2c_suspend();
2044 pmac_pfunc_base_suspend();
2046 /* Stop preemption */
2049 /* Make sure the decrementer won't interrupt us */
2050 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2051 /* Make sure any pending DEC interrupt occurring while we did
2052 * the above didn't re-enable the DEC */
2054 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2056 /* We can now disable MSR_EE. This code of course works properly only
2057 * on UP machines... For SMP, if we ever implement sleep, we'll have to
2058 * stop the "other" CPUs way before we do all that stuff.
2060 local_irq_disable();
2062 /* Broadcast power down irq
2063 * This isn't that useful in most cases (only directly wired devices can
2064 * use this but still... This will take care of sysdev's as well, so
2065 * we exit from here with local irqs disabled and PIC off.
2067 ret
= device_power_down(PMSG_SUSPEND
);
2069 wakeup_decrementer();
2074 printk(KERN_ERR
"Driver powerdown failed\n");
2078 /* Wait for completion of async requests */
2079 while (!batt_req
.complete
)
2082 /* Giveup the lazy FPU & vec so we don't have to back them
2083 * up from the low level code
2087 #ifdef CONFIG_ALTIVEC
2088 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
2089 enable_kernel_altivec();
2090 #endif /* CONFIG_ALTIVEC */
2096 pmac_wakeup_devices(void)
2100 #ifdef CONFIG_PMAC_BACKLIGHT
2101 /* Tell backlight code it can use the chip again */
2102 pmu_backlight_set_sleep(0);
2105 /* Power back up system devices (including the PIC) */
2108 /* Force a poll of ADB interrupts */
2109 adb_int_pending
= 1;
2110 via_pmu_interrupt(0, NULL
, NULL
);
2112 /* Restart jiffies & scheduling */
2113 wakeup_decrementer();
2115 /* Re-enable local CPU interrupts */
2120 /* Call platform functions marked "on wake" */
2121 pmac_pfunc_base_resume();
2122 pmac_pfunc_i2c_resume();
2124 /* Resume devices */
2127 /* Notify old style drivers */
2130 pm_restore_console();
2135 #define GRACKLE_PM (1<<7)
2136 #define GRACKLE_DOZE (1<<5)
2137 #define GRACKLE_NAP (1<<4)
2138 #define GRACKLE_SLEEP (1<<3)
2140 static int powerbook_sleep_grackle(void)
2142 unsigned long save_l2cr
;
2143 unsigned short pmcr1
;
2144 struct adb_request req
;
2146 struct pci_dev
*grackle
;
2148 grackle
= pci_find_slot(0, 0);
2152 ret
= pmac_suspend_devices();
2154 printk(KERN_ERR
"Sleep rejected by devices\n");
2158 /* Turn off various things. Darwin does some retry tests here... */
2159 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
, PMU_POW0_OFF
|PMU_POW0_HARD_DRIVE
);
2160 pmu_wait_complete(&req
);
2161 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2162 PMU_POW_OFF
|PMU_POW_BACKLIGHT
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2163 pmu_wait_complete(&req
);
2165 /* For 750, save backside cache setting and disable it */
2166 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2168 if (!__fake_sleep
) {
2169 /* Ask the PMU to put us to sleep */
2170 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2171 pmu_wait_complete(&req
);
2174 /* The VIA is supposed not to be restored correctly*/
2176 /* We shut down some HW */
2177 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2179 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2180 /* Apparently, MacOS uses NAP mode for Grackle ??? */
2181 pmcr1
&= ~(GRACKLE_DOZE
|GRACKLE_SLEEP
);
2182 pmcr1
|= GRACKLE_PM
|GRACKLE_NAP
;
2183 pci_write_config_word(grackle
, 0x70, pmcr1
);
2185 /* Call low-level ASM sleep handler */
2189 low_sleep_handler();
2191 /* We're awake again, stop grackle PM */
2192 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2193 pmcr1
&= ~(GRACKLE_PM
|GRACKLE_DOZE
|GRACKLE_SLEEP
|GRACKLE_NAP
);
2194 pci_write_config_word(grackle
, 0x70, pmcr1
);
2196 /* Make sure the PMU is idle */
2197 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2198 restore_via_state();
2200 /* Restore L2 cache */
2201 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2202 _set_L2CR(save_l2cr
);
2204 /* Restore userland MMU context */
2205 set_context(current
->active_mm
->context
.id
, current
->active_mm
->pgd
);
2207 /* Power things up */
2209 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2210 pmu_wait_complete(&req
);
2211 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
,
2212 PMU_POW0_ON
|PMU_POW0_HARD_DRIVE
);
2213 pmu_wait_complete(&req
);
2214 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2215 PMU_POW_ON
|PMU_POW_BACKLIGHT
|PMU_POW_CHARGER
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2216 pmu_wait_complete(&req
);
2218 pmac_wakeup_devices();
2224 powerbook_sleep_Core99(void)
2226 unsigned long save_l2cr
;
2227 unsigned long save_l3cr
;
2228 struct adb_request req
;
2231 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0) {
2232 printk(KERN_ERR
"Sleep mode not supported on this machine\n");
2236 if (num_online_cpus() > 1 || cpu_is_offline(0))
2239 ret
= pmac_suspend_devices();
2241 printk(KERN_ERR
"Sleep rejected by devices\n");
2245 /* Stop environment and ADB interrupts */
2246 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
2247 pmu_wait_complete(&req
);
2249 /* Tell PMU what events will wake us up */
2250 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_CLR_WAKEUP_EVENTS
,
2252 pmu_wait_complete(&req
);
2253 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_SET_WAKEUP_EVENTS
,
2254 0, PMU_PWR_WAKEUP_KEY
|
2255 (option_lid_wakeup
? PMU_PWR_WAKEUP_LID_OPEN
: 0));
2256 pmu_wait_complete(&req
);
2258 /* Save the state of the L2 and L3 caches */
2259 save_l3cr
= _get_L3CR(); /* (returns -1 if not available) */
2260 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2262 if (!__fake_sleep
) {
2263 /* Ask the PMU to put us to sleep */
2264 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2265 pmu_wait_complete(&req
);
2268 /* The VIA is supposed not to be restored correctly*/
2271 /* Shut down various ASICs. There's a chance that we can no longer
2272 * talk to the PMU after this, so I moved it to _after_ sending the
2273 * sleep command to it. Still need to be checked.
2275 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 1);
2277 /* Call low-level ASM sleep handler */
2281 low_sleep_handler();
2283 /* Restore Apple core ASICs state */
2284 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 0);
2287 restore_via_state();
2289 /* tweak LPJ before cpufreq is there */
2290 loops_per_jiffy
*= 2;
2293 pmac_call_early_video_resume();
2295 /* Restore L2 cache */
2296 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2297 _set_L2CR(save_l2cr
);
2298 /* Restore L3 cache */
2299 if (save_l3cr
!= 0xffffffff && (save_l3cr
& L3CR_L3E
) != 0)
2300 _set_L3CR(save_l3cr
);
2302 /* Restore userland MMU context */
2303 set_context(current
->active_mm
->context
.id
, current
->active_mm
->pgd
);
2305 /* Tell PMU we are ready */
2307 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2308 pmu_wait_complete(&req
);
2309 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2310 pmu_wait_complete(&req
);
2312 /* Restore LPJ, cpufreq will adjust the cpu frequency */
2313 loops_per_jiffy
/= 2;
2315 pmac_wakeup_devices();
2320 #define PB3400_MEM_CTRL 0xf8000000
2321 #define PB3400_MEM_CTRL_SLEEP 0x70
2324 powerbook_sleep_3400(void)
2329 struct adb_request sleep_req
;
2330 void __iomem
*mem_ctrl
;
2331 unsigned int __iomem
*mem_ctrl_sleep
;
2333 /* first map in the memory controller registers */
2334 mem_ctrl
= ioremap(PB3400_MEM_CTRL
, 0x100);
2335 if (mem_ctrl
== NULL
) {
2336 printk("powerbook_sleep_3400: ioremap failed\n");
2339 mem_ctrl_sleep
= mem_ctrl
+ PB3400_MEM_CTRL_SLEEP
;
2341 /* Allocate room for PCI save */
2342 pbook_alloc_pci_save();
2344 ret
= pmac_suspend_devices();
2346 pbook_free_pci_save();
2347 printk(KERN_ERR
"Sleep rejected by devices\n");
2351 /* Save the state of PCI config space for some slots */
2354 /* Set the memory controller to keep the memory refreshed
2355 while we're asleep */
2356 for (i
= 0x403f; i
>= 0x4000; --i
) {
2357 out_be32(mem_ctrl_sleep
, i
);
2359 x
= (in_be32(mem_ctrl_sleep
) >> 16) & 0x3ff;
2365 /* Ask the PMU to put us to sleep */
2366 pmu_request(&sleep_req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2367 while (!sleep_req
.complete
)
2370 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2372 /* displacement-flush the L2 cache - necessary? */
2373 for (p
= KERNELBASE
; p
< KERNELBASE
+ 0x100000; p
+= 0x1000)
2374 i
= *(volatile int *)p
;
2377 /* Put the CPU into sleep mode */
2378 hid0
= mfspr(SPRN_HID0
);
2379 hid0
= (hid0
& ~(HID0_NAP
| HID0_DOZE
)) | HID0_SLEEP
;
2380 mtspr(SPRN_HID0
, hid0
);
2381 mtmsr(mfmsr() | MSR_POW
| MSR_EE
);
2384 /* OK, we're awake again, start restoring things */
2385 out_be32(mem_ctrl_sleep
, 0x3f);
2386 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2387 pbook_pci_restore();
2390 /* wait for the PMU interrupt sequence to complete */
2394 pmac_wakeup_devices();
2395 pbook_free_pci_save();
2401 #endif /* CONFIG_PM && CONFIG_PPC32 */
2404 * Support for /dev/pmu device
2406 #define RB_SIZE 0x10
2407 struct pmu_private
{
2408 struct list_head list
;
2413 unsigned char data
[16];
2415 wait_queue_head_t wait
;
2417 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2418 int backlight_locker
;
2422 static LIST_HEAD(all_pmu_pvt
);
2423 static DEFINE_SPINLOCK(all_pvt_lock
);
2426 pmu_pass_intr(unsigned char *data
, int len
)
2428 struct pmu_private
*pp
;
2429 struct list_head
*list
;
2431 unsigned long flags
;
2433 if (len
> sizeof(pp
->rb_buf
[0].data
))
2434 len
= sizeof(pp
->rb_buf
[0].data
);
2435 spin_lock_irqsave(&all_pvt_lock
, flags
);
2436 for (list
= &all_pmu_pvt
; (list
= list
->next
) != &all_pmu_pvt
; ) {
2437 pp
= list_entry(list
, struct pmu_private
, list
);
2438 spin_lock(&pp
->lock
);
2442 if (i
!= pp
->rb_get
) {
2443 struct rb_entry
*rp
= &pp
->rb_buf
[pp
->rb_put
];
2445 memcpy(rp
->data
, data
, len
);
2447 wake_up_interruptible(&pp
->wait
);
2449 spin_unlock(&pp
->lock
);
2451 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2455 pmu_open(struct inode
*inode
, struct file
*file
)
2457 struct pmu_private
*pp
;
2458 unsigned long flags
;
2460 pp
= kmalloc(sizeof(struct pmu_private
), GFP_KERNEL
);
2463 pp
->rb_get
= pp
->rb_put
= 0;
2464 spin_lock_init(&pp
->lock
);
2465 init_waitqueue_head(&pp
->wait
);
2466 spin_lock_irqsave(&all_pvt_lock
, flags
);
2467 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2468 pp
->backlight_locker
= 0;
2470 list_add(&pp
->list
, &all_pmu_pvt
);
2471 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2472 file
->private_data
= pp
;
2477 pmu_read(struct file
*file
, char __user
*buf
,
2478 size_t count
, loff_t
*ppos
)
2480 struct pmu_private
*pp
= file
->private_data
;
2481 DECLARE_WAITQUEUE(wait
, current
);
2482 unsigned long flags
;
2485 if (count
< 1 || pp
== 0)
2487 if (!access_ok(VERIFY_WRITE
, buf
, count
))
2490 spin_lock_irqsave(&pp
->lock
, flags
);
2491 add_wait_queue(&pp
->wait
, &wait
);
2492 current
->state
= TASK_INTERRUPTIBLE
;
2496 if (pp
->rb_get
!= pp
->rb_put
) {
2498 struct rb_entry
*rp
= &pp
->rb_buf
[i
];
2500 spin_unlock_irqrestore(&pp
->lock
, flags
);
2503 if (ret
> 0 && copy_to_user(buf
, rp
->data
, ret
))
2507 spin_lock_irqsave(&pp
->lock
, flags
);
2512 if (file
->f_flags
& O_NONBLOCK
)
2515 if (signal_pending(current
))
2517 spin_unlock_irqrestore(&pp
->lock
, flags
);
2519 spin_lock_irqsave(&pp
->lock
, flags
);
2521 current
->state
= TASK_RUNNING
;
2522 remove_wait_queue(&pp
->wait
, &wait
);
2523 spin_unlock_irqrestore(&pp
->lock
, flags
);
2529 pmu_write(struct file
*file
, const char __user
*buf
,
2530 size_t count
, loff_t
*ppos
)
2536 pmu_fpoll(struct file
*filp
, poll_table
*wait
)
2538 struct pmu_private
*pp
= filp
->private_data
;
2539 unsigned int mask
= 0;
2540 unsigned long flags
;
2544 poll_wait(filp
, &pp
->wait
, wait
);
2545 spin_lock_irqsave(&pp
->lock
, flags
);
2546 if (pp
->rb_get
!= pp
->rb_put
)
2548 spin_unlock_irqrestore(&pp
->lock
, flags
);
2553 pmu_release(struct inode
*inode
, struct file
*file
)
2555 struct pmu_private
*pp
= file
->private_data
;
2556 unsigned long flags
;
2560 file
->private_data
= NULL
;
2561 spin_lock_irqsave(&all_pvt_lock
, flags
);
2562 list_del(&pp
->list
);
2563 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2565 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2566 if (pp
->backlight_locker
)
2567 pmac_backlight_enable();
2577 pmu_ioctl(struct inode
* inode
, struct file
*filp
,
2578 u_int cmd
, u_long arg
)
2580 __u32 __user
*argp
= (__u32 __user
*)arg
;
2581 int error
= -EINVAL
;
2584 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2586 if (!capable(CAP_SYS_ADMIN
))
2588 if (sleep_in_progress
)
2590 sleep_in_progress
= 1;
2592 case PMU_OHARE_BASED
:
2593 error
= powerbook_sleep_3400();
2595 case PMU_HEATHROW_BASED
:
2596 case PMU_PADDINGTON_BASED
:
2597 error
= powerbook_sleep_grackle();
2599 case PMU_KEYLARGO_BASED
:
2600 error
= powerbook_sleep_Core99();
2605 sleep_in_progress
= 0;
2607 case PMU_IOC_CAN_SLEEP
:
2608 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0)
2609 return put_user(0, argp
);
2611 return put_user(1, argp
);
2612 #endif /* CONFIG_PM && CONFIG_PPC32 */
2614 #ifdef CONFIG_PMAC_BACKLIGHT_LEGACY
2615 /* Compatibility ioctl's for backlight */
2616 case PMU_IOC_GET_BACKLIGHT
:
2620 if (sleep_in_progress
)
2623 brightness
= pmac_backlight_get_legacy_brightness();
2627 return put_user(brightness
, argp
);
2630 case PMU_IOC_SET_BACKLIGHT
:
2634 if (sleep_in_progress
)
2637 error
= get_user(brightness
, argp
);
2641 return pmac_backlight_set_legacy_brightness(brightness
);
2643 #ifdef CONFIG_INPUT_ADBHID
2644 case PMU_IOC_GRAB_BACKLIGHT
: {
2645 struct pmu_private
*pp
= filp
->private_data
;
2647 if (pp
->backlight_locker
)
2650 pp
->backlight_locker
= 1;
2651 pmac_backlight_disable();
2655 #endif /* CONFIG_INPUT_ADBHID */
2656 #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */
2658 case PMU_IOC_GET_MODEL
:
2659 return put_user(pmu_kind
, argp
);
2660 case PMU_IOC_HAS_ADB
:
2661 return put_user(pmu_has_adb
, argp
);
2666 static struct file_operations pmu_device_fops
= {
2672 .release
= pmu_release
,
2675 static struct miscdevice pmu_device
= {
2676 PMU_MINOR
, "pmu", &pmu_device_fops
2679 static int pmu_device_init(void)
2683 if (misc_register(&pmu_device
) < 0)
2684 printk(KERN_ERR
"via-pmu: cannot register misc device.\n");
2687 device_initcall(pmu_device_init
);
2692 polled_handshake(volatile unsigned char __iomem
*via
)
2694 via
[B
] &= ~TREQ
; eieio();
2695 while ((via
[B
] & TACK
) != 0)
2697 via
[B
] |= TREQ
; eieio();
2698 while ((via
[B
] & TACK
) == 0)
2703 polled_send_byte(volatile unsigned char __iomem
*via
, int x
)
2705 via
[ACR
] |= SR_OUT
| SR_EXT
; eieio();
2706 via
[SR
] = x
; eieio();
2707 polled_handshake(via
);
2711 polled_recv_byte(volatile unsigned char __iomem
*via
)
2715 via
[ACR
] = (via
[ACR
] & ~SR_OUT
) | SR_EXT
; eieio();
2716 x
= via
[SR
]; eieio();
2717 polled_handshake(via
);
2718 x
= via
[SR
]; eieio();
2723 pmu_polled_request(struct adb_request
*req
)
2725 unsigned long flags
;
2727 volatile unsigned char __iomem
*v
= via
;
2731 l
= pmu_data_len
[c
][0];
2732 if (l
>= 0 && req
->nbytes
!= l
+ 1)
2735 local_irq_save(flags
);
2736 while (pmu_state
!= idle
)
2739 while ((via
[B
] & TACK
) == 0)
2741 polled_send_byte(v
, c
);
2743 l
= req
->nbytes
- 1;
2744 polled_send_byte(v
, l
);
2746 for (i
= 1; i
<= l
; ++i
)
2747 polled_send_byte(v
, req
->data
[i
]);
2749 l
= pmu_data_len
[c
][1];
2751 l
= polled_recv_byte(v
);
2752 for (i
= 0; i
< l
; ++i
)
2753 req
->reply
[i
+ req
->reply_len
] = polled_recv_byte(v
);
2758 local_irq_restore(flags
);
2761 #endif /* DEBUG_SLEEP */
2764 /* FIXME: This is a temporary set of callbacks to enable us
2765 * to do suspend-to-disk.
2768 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2770 static int pmu_sys_suspended
= 0;
2772 static int pmu_sys_suspend(struct sys_device
*sysdev
, pm_message_t state
)
2774 if (state
.event
!= PM_EVENT_SUSPEND
|| pmu_sys_suspended
)
2777 /* Suspend PMU event interrupts */
2780 pmu_sys_suspended
= 1;
2784 static int pmu_sys_resume(struct sys_device
*sysdev
)
2786 struct adb_request req
;
2788 if (!pmu_sys_suspended
)
2791 /* Tell PMU we are ready */
2792 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2793 pmu_wait_complete(&req
);
2795 /* Resume PMU event interrupts */
2798 pmu_sys_suspended
= 0;
2803 #endif /* CONFIG_PM && CONFIG_PPC32 */
2805 static struct sysdev_class pmu_sysclass
= {
2806 set_kset_name("pmu"),
2809 static struct sys_device device_pmu
= {
2811 .cls
= &pmu_sysclass
,
2814 static struct sysdev_driver driver_pmu
= {
2815 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2816 .suspend
= &pmu_sys_suspend
,
2817 .resume
= &pmu_sys_resume
,
2818 #endif /* CONFIG_PM && CONFIG_PPC32 */
2821 static int __init
init_pmu_sysfs(void)
2825 rc
= sysdev_class_register(&pmu_sysclass
);
2827 printk(KERN_ERR
"Failed registering PMU sys class\n");
2830 rc
= sysdev_register(&device_pmu
);
2832 printk(KERN_ERR
"Failed registering PMU sys device\n");
2835 rc
= sysdev_driver_register(&pmu_sysclass
, &driver_pmu
);
2837 printk(KERN_ERR
"Failed registering PMU sys driver\n");
2843 subsys_initcall(init_pmu_sysfs
);
2845 EXPORT_SYMBOL(pmu_request
);
2846 EXPORT_SYMBOL(pmu_queue_request
);
2847 EXPORT_SYMBOL(pmu_poll
);
2848 EXPORT_SYMBOL(pmu_poll_adb
);
2849 EXPORT_SYMBOL(pmu_wait_complete
);
2850 EXPORT_SYMBOL(pmu_suspend
);
2851 EXPORT_SYMBOL(pmu_resume
);
2852 EXPORT_SYMBOL(pmu_unlock
);
2853 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2854 EXPORT_SYMBOL(pmu_enable_irled
);
2855 EXPORT_SYMBOL(pmu_battery_count
);
2856 EXPORT_SYMBOL(pmu_batteries
);
2857 EXPORT_SYMBOL(pmu_power_flags
);
2858 #endif /* CONFIG_PM && CONFIG_PPC32 */