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
13 * Copyright (C) 2006-2007 Johannes Berg
15 * THIS DRIVER IS BECOMING A TOTAL MESS !
16 * - Cleanup atomically disabling reply to PMU events after
17 * a sleep or a freq. switch
21 #include <linux/smp_lock.h>
22 #include <linux/types.h>
23 #include <linux/errno.h>
24 #include <linux/kernel.h>
25 #include <linux/delay.h>
26 #include <linux/sched.h>
27 #include <linux/miscdevice.h>
28 #include <linux/blkdev.h>
29 #include <linux/pci.h>
30 #include <linux/slab.h>
31 #include <linux/poll.h>
32 #include <linux/adb.h>
33 #include <linux/pmu.h>
34 #include <linux/cuda.h>
35 #include <linux/module.h>
36 #include <linux/spinlock.h>
38 #include <linux/proc_fs.h>
39 #include <linux/seq_file.h>
40 #include <linux/init.h>
41 #include <linux/interrupt.h>
42 #include <linux/device.h>
43 #include <linux/sysdev.h>
44 #include <linux/freezer.h>
45 #include <linux/syscalls.h>
46 #include <linux/suspend.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 */
69 /* Misc minor number allocated for /dev/pmu */
72 /* How many iterations between battery polls */
73 #define BATTERY_POLLING_COUNT 2
75 static volatile unsigned char __iomem
*via
;
77 /* VIA registers - spaced 0x200 bytes apart */
78 #define RS 0x200 /* skip between registers */
79 #define B 0 /* B-side data */
80 #define A RS /* A-side data */
81 #define DIRB (2*RS) /* B-side direction (1=output) */
82 #define DIRA (3*RS) /* A-side direction (1=output) */
83 #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
84 #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
85 #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
86 #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
87 #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
88 #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
89 #define SR (10*RS) /* Shift register */
90 #define ACR (11*RS) /* Auxiliary control register */
91 #define PCR (12*RS) /* Peripheral control register */
92 #define IFR (13*RS) /* Interrupt flag register */
93 #define IER (14*RS) /* Interrupt enable register */
94 #define ANH (15*RS) /* A-side data, no handshake */
96 /* Bits in B data register: both active low */
97 #define TACK 0x08 /* Transfer acknowledge (input) */
98 #define TREQ 0x10 /* Transfer request (output) */
101 #define SR_CTRL 0x1c /* Shift register control bits */
102 #define SR_EXT 0x0c /* Shift on external clock */
103 #define SR_OUT 0x10 /* Shift out if 1 */
105 /* Bits in IFR and IER */
106 #define IER_SET 0x80 /* set bits in IER */
107 #define IER_CLR 0 /* clear bits in IER */
108 #define SR_INT 0x04 /* Shift register full/empty */
110 #define CB1_INT 0x10 /* transition on CB1 input */
112 static volatile enum pmu_state
{
121 static volatile enum int_data_state
{
126 } int_data_state
[2] = { int_data_empty
, int_data_empty
};
128 static struct adb_request
*current_req
;
129 static struct adb_request
*last_req
;
130 static struct adb_request
*req_awaiting_reply
;
131 static unsigned char interrupt_data
[2][32];
132 static int interrupt_data_len
[2];
133 static int int_data_last
;
134 static unsigned char *reply_ptr
;
135 static int data_index
;
137 static volatile int adb_int_pending
;
138 static volatile int disable_poll
;
139 static struct device_node
*vias
;
140 static int pmu_kind
= PMU_UNKNOWN
;
141 static int pmu_fully_inited
;
142 static int pmu_has_adb
;
143 static struct device_node
*gpio_node
;
144 static unsigned char __iomem
*gpio_reg
;
145 static int gpio_irq
= NO_IRQ
;
146 static int gpio_irq_enabled
= -1;
147 static volatile int pmu_suspended
;
148 static spinlock_t pmu_lock
;
149 static u8 pmu_intr_mask
;
150 static int pmu_version
;
151 static int drop_interrupts
;
152 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
153 static int option_lid_wakeup
= 1;
154 #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
155 static unsigned long async_req_locks
;
156 static unsigned int pmu_irq_stats
[11];
158 static struct proc_dir_entry
*proc_pmu_root
;
159 static struct proc_dir_entry
*proc_pmu_info
;
160 static struct proc_dir_entry
*proc_pmu_irqstats
;
161 static struct proc_dir_entry
*proc_pmu_options
;
162 static int option_server_mode
;
164 int pmu_battery_count
;
166 unsigned int pmu_power_flags
= PMU_PWR_AC_PRESENT
;
167 struct pmu_battery_info pmu_batteries
[PMU_MAX_BATTERIES
];
168 static int query_batt_timer
= BATTERY_POLLING_COUNT
;
169 static struct adb_request batt_req
;
170 static struct proc_dir_entry
*proc_pmu_batt
[PMU_MAX_BATTERIES
];
176 static int adb_dev_map
;
177 static int pmu_adb_flags
;
179 static int pmu_probe(void);
180 static int pmu_init(void);
181 static int pmu_send_request(struct adb_request
*req
, int sync
);
182 static int pmu_adb_autopoll(int devs
);
183 static int pmu_adb_reset_bus(void);
184 #endif /* CONFIG_ADB */
186 static int init_pmu(void);
187 static void pmu_start(void);
188 static irqreturn_t
via_pmu_interrupt(int irq
, void *arg
);
189 static irqreturn_t
gpio1_interrupt(int irq
, void *arg
);
190 static const struct file_operations pmu_info_proc_fops
;
191 static const struct file_operations pmu_irqstats_proc_fops
;
192 static void pmu_pass_intr(unsigned char *data
, int len
);
193 static const struct file_operations pmu_battery_proc_fops
;
194 static const struct file_operations pmu_options_proc_fops
;
197 struct adb_driver via_pmu_driver
= {
206 #endif /* CONFIG_ADB */
208 extern void low_sleep_handler(void);
209 extern void enable_kernel_altivec(void);
210 extern void enable_kernel_fp(void);
213 int pmu_polled_request(struct adb_request
*req
);
214 void pmu_blink(int n
);
218 * This table indicates for each PMU opcode:
219 * - the number of data bytes to be sent with the command, or -1
220 * if a length byte should be sent,
221 * - the number of response bytes which the PMU will return, or
222 * -1 if it will send a length byte.
224 static const s8 pmu_data_len
[256][2] = {
225 /* 0 1 2 3 4 5 6 7 */
226 /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
227 /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
228 /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
229 /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
230 /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
231 /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
232 /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
233 /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
234 /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
235 /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
236 /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
237 /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
238 /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
239 /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
240 /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
241 /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
242 /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
243 /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
244 /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
245 /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
246 /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
247 /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
248 /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
249 /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
250 /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
251 /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
252 /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
253 /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
254 /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
255 /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
256 /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
257 /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
260 static char *pbook_type
[] = {
262 "PowerBook 2400/3400/3500(G3)",
263 "PowerBook G3 Series",
268 int __init
find_via_pmu(void)
275 vias
= of_find_node_by_name(NULL
, "via-pmu");
279 reg
= of_get_property(vias
, "reg", NULL
);
281 printk(KERN_ERR
"via-pmu: No \"reg\" property !\n");
284 taddr
= of_translate_address(vias
, reg
);
285 if (taddr
== OF_BAD_ADDR
) {
286 printk(KERN_ERR
"via-pmu: Can't translate address !\n");
290 spin_lock_init(&pmu_lock
);
294 pmu_intr_mask
= PMU_INT_PCEJECT
|
299 if (vias
->parent
->name
&& ((strcmp(vias
->parent
->name
, "ohare") == 0)
300 || of_device_is_compatible(vias
->parent
, "ohare")))
301 pmu_kind
= PMU_OHARE_BASED
;
302 else if (of_device_is_compatible(vias
->parent
, "paddington"))
303 pmu_kind
= PMU_PADDINGTON_BASED
;
304 else if (of_device_is_compatible(vias
->parent
, "heathrow"))
305 pmu_kind
= PMU_HEATHROW_BASED
;
306 else if (of_device_is_compatible(vias
->parent
, "Keylargo")
307 || of_device_is_compatible(vias
->parent
, "K2-Keylargo")) {
308 struct device_node
*gpiop
;
309 struct device_node
*adbp
;
310 u64 gaddr
= OF_BAD_ADDR
;
312 pmu_kind
= PMU_KEYLARGO_BASED
;
313 adbp
= of_find_node_by_type(NULL
, "adb");
314 pmu_has_adb
= (adbp
!= NULL
);
316 pmu_intr_mask
= PMU_INT_PCEJECT
|
322 gpiop
= of_find_node_by_name(NULL
, "gpio");
324 reg
= of_get_property(gpiop
, "reg", NULL
);
326 gaddr
= of_translate_address(gpiop
, reg
);
327 if (gaddr
!= OF_BAD_ADDR
)
328 gpio_reg
= ioremap(gaddr
, 0x10);
330 if (gpio_reg
== NULL
) {
331 printk(KERN_ERR
"via-pmu: Can't find GPIO reg !\n");
335 pmu_kind
= PMU_UNKNOWN
;
337 via
= ioremap(taddr
, 0x2000);
339 printk(KERN_ERR
"via-pmu: Can't map address !\n");
343 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
344 out_8(&via
[IFR
], 0x7f); /* clear IFR */
353 printk(KERN_INFO
"PMU driver v%d initialized for %s, firmware: %02x\n",
354 PMU_DRIVER_VERSION
, pbook_type
[pmu_kind
], pmu_version
);
356 sys_ctrler
= SYS_CTRLER_PMU
;
369 static int pmu_probe(void)
371 return vias
== NULL
? -ENODEV
: 0;
374 static int __init
pmu_init(void)
380 #endif /* CONFIG_ADB */
383 * We can't wait until pmu_init gets called, that happens too late.
384 * It happens after IDE and SCSI initialization, which can take a few
385 * seconds, and by that time the PMU could have given up on us and
387 * Thus this is called with arch_initcall rather than device_initcall.
389 static int __init
via_pmu_start(void)
396 batt_req
.complete
= 1;
398 irq
= irq_of_parse_and_map(vias
, 0);
400 printk(KERN_ERR
"via-pmu: can't map interrupt\n");
403 /* We set IRQF_TIMER because we don't want the interrupt to be disabled
404 * between the 2 passes of driver suspend, we control our own disabling
407 if (request_irq(irq
, via_pmu_interrupt
, IRQF_TIMER
, "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
, IRQF_TIMER
,
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 (of_machine_is_compatible("AAPL,3400/2400") ||
467 of_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 (of_machine_is_compatible("AAPL,PowerBook1998") ||
476 of_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
=
482 of_find_node_by_name(NULL
, "power-mgt");
483 const u32
*prim_info
= NULL
;
485 prim_info
= of_get_property(prim
, "prim-info", NULL
);
487 /* Other stuffs here yet unknown */
488 pmu_battery_count
= (prim_info
[6] >> 16) & 0xff;
489 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
490 if (pmu_battery_count
> 1)
491 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
495 #endif /* CONFIG_PPC32 */
497 /* Create /proc/pmu */
498 proc_pmu_root
= proc_mkdir("pmu", NULL
);
502 for (i
=0; i
<pmu_battery_count
; i
++) {
504 sprintf(title
, "battery_%ld", i
);
505 proc_pmu_batt
[i
] = proc_create_data(title
, 0, proc_pmu_root
,
506 &pmu_battery_proc_fops
, (void *)i
);
509 proc_pmu_info
= proc_create("info", 0, proc_pmu_root
, &pmu_info_proc_fops
);
510 proc_pmu_irqstats
= proc_create("interrupts", 0, proc_pmu_root
,
511 &pmu_irqstats_proc_fops
);
512 proc_pmu_options
= proc_create("options", 0600, proc_pmu_root
,
513 &pmu_options_proc_fops
);
518 device_initcall(via_pmu_dev_init
);
524 struct adb_request req
;
526 out_8(&via
[B
], via
[B
] | TREQ
); /* negate TREQ */
527 out_8(&via
[DIRB
], (via
[DIRB
] | TREQ
) & ~TACK
); /* TACK in, TREQ out */
529 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
531 while (!req
.complete
) {
533 printk(KERN_ERR
"init_pmu: no response from PMU\n");
540 /* ack all pending interrupts */
542 interrupt_data
[0][0] = 1;
543 while (interrupt_data
[0][0] || pmu_state
!= idle
) {
545 printk(KERN_ERR
"init_pmu: timed out acking intrs\n");
548 if (pmu_state
== idle
)
550 via_pmu_interrupt(0, NULL
);
554 /* Tell PMU we are ready. */
555 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
556 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
557 while (!req
.complete
)
561 /* Read PMU version */
562 pmu_request(&req
, NULL
, 1, PMU_GET_VERSION
);
563 pmu_wait_complete(&req
);
564 if (req
.reply_len
> 0)
565 pmu_version
= req
.reply
[0];
567 /* Read server mode setting */
568 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
569 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
,
570 PMU_PWR_GET_POWERUP_EVENTS
);
571 pmu_wait_complete(&req
);
572 if (req
.reply_len
== 2) {
573 if (req
.reply
[1] & PMU_PWR_WAKEUP_AC_INSERT
)
574 option_server_mode
= 1;
575 printk(KERN_INFO
"via-pmu: Server Mode is %s\n",
576 option_server_mode
? "enabled" : "disabled");
588 static void pmu_set_server_mode(int server_mode
)
590 struct adb_request req
;
592 if (pmu_kind
!= PMU_KEYLARGO_BASED
)
595 option_server_mode
= server_mode
;
596 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
, PMU_PWR_GET_POWERUP_EVENTS
);
597 pmu_wait_complete(&req
);
598 if (req
.reply_len
< 2)
601 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
602 PMU_PWR_SET_POWERUP_EVENTS
,
603 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
605 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
606 PMU_PWR_CLR_POWERUP_EVENTS
,
607 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
608 pmu_wait_complete(&req
);
611 /* This new version of the code for 2400/3400/3500 powerbooks
612 * is inspired from the implementation in gkrellm-pmu
615 done_battery_state_ohare(struct adb_request
* req
)
619 * 0x01 : AC indicator
621 * 0x04 : battery exist
624 * 0x20 : full charged
625 * 0x40 : pcharge reset
626 * 0x80 : battery exist
628 * [1][2] : battery voltage
629 * [3] : CPU temperature
630 * [4] : battery temperature
635 unsigned int bat_flags
= PMU_BATT_TYPE_HOOPER
;
636 long pcharge
, charge
, vb
, vmax
, lmax
;
637 long vmax_charging
, vmax_charged
;
638 long amperage
, voltage
, time
, max
;
639 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
640 NULL
, PMAC_MB_INFO_MODEL
, 0);
642 if (req
->reply
[0] & 0x01)
643 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
645 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
647 if (mb
== PMAC_TYPE_COMET
) {
658 /* If battery installed */
659 if (req
->reply
[0] & 0x04) {
660 bat_flags
|= PMU_BATT_PRESENT
;
661 if (req
->reply
[0] & 0x02)
662 bat_flags
|= PMU_BATT_CHARGING
;
663 vb
= (req
->reply
[1] << 8) | req
->reply
[2];
664 voltage
= (vb
* 265 + 72665) / 10;
665 amperage
= req
->reply
[5];
666 if ((req
->reply
[0] & 0x01) == 0) {
668 vb
+= ((amperage
- 200) * 15)/100;
669 } else if (req
->reply
[0] & 0x02) {
670 vb
= (vb
* 97) / 100;
671 vmax
= vmax_charging
;
673 charge
= (100 * vb
) / vmax
;
674 if (req
->reply
[0] & 0x40) {
675 pcharge
= (req
->reply
[6] << 8) + req
->reply
[7];
679 pcharge
= 100 - pcharge
/ lmax
;
680 if (pcharge
< charge
)
684 time
= (charge
* 16440) / amperage
;
688 amperage
= -amperage
;
690 charge
= max
= amperage
= voltage
= time
= 0;
692 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
693 pmu_batteries
[pmu_cur_battery
].charge
= charge
;
694 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
695 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
696 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
697 pmu_batteries
[pmu_cur_battery
].time_remaining
= time
;
699 clear_bit(0, &async_req_locks
);
703 done_battery_state_smart(struct adb_request
* req
)
706 * [0] : format of this structure (known: 3,4,5)
719 * [4][5] : max charge
724 unsigned int bat_flags
= PMU_BATT_TYPE_SMART
;
726 unsigned int capa
, max
, voltage
;
728 if (req
->reply
[1] & 0x01)
729 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
731 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
734 capa
= max
= amperage
= voltage
= 0;
736 if (req
->reply
[1] & 0x04) {
737 bat_flags
|= PMU_BATT_PRESENT
;
738 switch(req
->reply
[0]) {
740 case 4: capa
= req
->reply
[2];
742 amperage
= *((signed char *)&req
->reply
[4]);
743 voltage
= req
->reply
[5];
745 case 5: capa
= (req
->reply
[2] << 8) | req
->reply
[3];
746 max
= (req
->reply
[4] << 8) | req
->reply
[5];
747 amperage
= *((signed short *)&req
->reply
[6]);
748 voltage
= (req
->reply
[8] << 8) | req
->reply
[9];
751 printk(KERN_WARNING
"pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
752 req
->reply_len
, req
->reply
[0], req
->reply
[1], req
->reply
[2], req
->reply
[3]);
757 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
758 bat_flags
|= PMU_BATT_CHARGING
;
760 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
761 pmu_batteries
[pmu_cur_battery
].charge
= capa
;
762 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
763 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
764 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
766 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
767 pmu_batteries
[pmu_cur_battery
].time_remaining
768 = ((max
-capa
) * 3600) / amperage
;
770 pmu_batteries
[pmu_cur_battery
].time_remaining
771 = (capa
* 3600) / (-amperage
);
773 pmu_batteries
[pmu_cur_battery
].time_remaining
= 0;
775 pmu_cur_battery
= (pmu_cur_battery
+ 1) % pmu_battery_count
;
777 clear_bit(0, &async_req_locks
);
781 query_battery_state(void)
783 if (test_and_set_bit(0, &async_req_locks
))
785 if (pmu_kind
== PMU_OHARE_BASED
)
786 pmu_request(&batt_req
, done_battery_state_ohare
,
787 1, PMU_BATTERY_STATE
);
789 pmu_request(&batt_req
, done_battery_state_smart
,
790 2, PMU_SMART_BATTERY_STATE
, pmu_cur_battery
+1);
793 static int pmu_info_proc_show(struct seq_file
*m
, void *v
)
795 seq_printf(m
, "PMU driver version : %d\n", PMU_DRIVER_VERSION
);
796 seq_printf(m
, "PMU firmware version : %02x\n", pmu_version
);
797 seq_printf(m
, "AC Power : %d\n",
798 ((pmu_power_flags
& PMU_PWR_AC_PRESENT
) != 0) || pmu_battery_count
== 0);
799 seq_printf(m
, "Battery count : %d\n", pmu_battery_count
);
804 static int pmu_info_proc_open(struct inode
*inode
, struct file
*file
)
806 return single_open(file
, pmu_info_proc_show
, NULL
);
809 static const struct file_operations pmu_info_proc_fops
= {
810 .owner
= THIS_MODULE
,
811 .open
= pmu_info_proc_open
,
814 .release
= single_release
,
817 static int pmu_irqstats_proc_show(struct seq_file
*m
, void *v
)
820 static const char *irq_names
[] = {
821 "Total CB1 triggered events",
822 "Total GPIO1 triggered events",
823 "PC-Card eject button",
824 "Sound/Brightness button",
826 "Battery state change",
827 "Environment interrupt",
829 "Ghost interrupt (zero len)",
830 "Empty interrupt (empty mask)",
834 for (i
=0; i
<11; i
++) {
835 seq_printf(m
, " %2u: %10u (%s)\n",
836 i
, pmu_irq_stats
[i
], irq_names
[i
]);
841 static int pmu_irqstats_proc_open(struct inode
*inode
, struct file
*file
)
843 return single_open(file
, pmu_irqstats_proc_show
, NULL
);
846 static const struct file_operations pmu_irqstats_proc_fops
= {
847 .owner
= THIS_MODULE
,
848 .open
= pmu_irqstats_proc_open
,
851 .release
= single_release
,
854 static int pmu_battery_proc_show(struct seq_file
*m
, void *v
)
856 long batnum
= (long)m
->private;
859 seq_printf(m
, "flags : %08x\n", pmu_batteries
[batnum
].flags
);
860 seq_printf(m
, "charge : %d\n", pmu_batteries
[batnum
].charge
);
861 seq_printf(m
, "max_charge : %d\n", pmu_batteries
[batnum
].max_charge
);
862 seq_printf(m
, "current : %d\n", pmu_batteries
[batnum
].amperage
);
863 seq_printf(m
, "voltage : %d\n", pmu_batteries
[batnum
].voltage
);
864 seq_printf(m
, "time rem. : %d\n", pmu_batteries
[batnum
].time_remaining
);
868 static int pmu_battery_proc_open(struct inode
*inode
, struct file
*file
)
870 return single_open(file
, pmu_battery_proc_show
, PDE(inode
)->data
);
873 static const struct file_operations pmu_battery_proc_fops
= {
874 .owner
= THIS_MODULE
,
875 .open
= pmu_battery_proc_open
,
878 .release
= single_release
,
881 static int pmu_options_proc_show(struct seq_file
*m
, void *v
)
883 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
884 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
885 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
886 seq_printf(m
, "lid_wakeup=%d\n", option_lid_wakeup
);
888 if (pmu_kind
== PMU_KEYLARGO_BASED
)
889 seq_printf(m
, "server_mode=%d\n", option_server_mode
);
894 static int pmu_options_proc_open(struct inode
*inode
, struct file
*file
)
896 return single_open(file
, pmu_options_proc_show
, NULL
);
899 static ssize_t
pmu_options_proc_write(struct file
*file
,
900 const char __user
*buffer
, size_t count
, loff_t
*pos
)
904 size_t fcount
= count
;
910 if (copy_from_user(tmp
, buffer
, count
))
918 while(*val
&& (*val
!= '=')) {
928 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
929 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
930 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
931 if (!strcmp(label
, "lid_wakeup"))
932 option_lid_wakeup
= ((*val
) == '1');
934 if (pmu_kind
== PMU_KEYLARGO_BASED
&& !strcmp(label
, "server_mode")) {
936 new_value
= ((*val
) == '1');
937 if (new_value
!= option_server_mode
)
938 pmu_set_server_mode(new_value
);
943 static const struct file_operations pmu_options_proc_fops
= {
944 .owner
= THIS_MODULE
,
945 .open
= pmu_options_proc_open
,
948 .release
= single_release
,
949 .write
= pmu_options_proc_write
,
953 /* Send an ADB command */
954 static int pmu_send_request(struct adb_request
*req
, int sync
)
958 if ((vias
== NULL
) || (!pmu_fully_inited
)) {
965 switch (req
->data
[0]) {
967 for (i
= 0; i
< req
->nbytes
- 1; ++i
)
968 req
->data
[i
] = req
->data
[i
+1];
970 if (pmu_data_len
[req
->data
[0]][1] != 0) {
971 req
->reply
[0] = ADB_RET_OK
;
975 ret
= pmu_queue_request(req
);
978 switch (req
->data
[1]) {
980 if (req
->nbytes
!= 2)
982 req
->data
[0] = PMU_READ_RTC
;
985 req
->reply
[0] = CUDA_PACKET
;
987 req
->reply
[2] = CUDA_GET_TIME
;
988 ret
= pmu_queue_request(req
);
991 if (req
->nbytes
!= 6)
993 req
->data
[0] = PMU_SET_RTC
;
995 for (i
= 1; i
<= 4; ++i
)
996 req
->data
[i
] = req
->data
[i
+1];
998 req
->reply
[0] = CUDA_PACKET
;
1000 req
->reply
[2] = CUDA_SET_TIME
;
1001 ret
= pmu_queue_request(req
);
1008 for (i
= req
->nbytes
- 1; i
> 1; --i
)
1009 req
->data
[i
+2] = req
->data
[i
];
1010 req
->data
[3] = req
->nbytes
- 2;
1011 req
->data
[2] = pmu_adb_flags
;
1012 /*req->data[1] = req->data[1];*/
1013 req
->data
[0] = PMU_ADB_CMD
;
1015 req
->reply_expected
= 1;
1017 ret
= pmu_queue_request(req
);
1026 while (!req
->complete
)
1032 /* Enable/disable autopolling */
1033 static int __pmu_adb_autopoll(int devs
)
1035 struct adb_request req
;
1038 pmu_request(&req
, NULL
, 5, PMU_ADB_CMD
, 0, 0x86,
1039 adb_dev_map
>> 8, adb_dev_map
);
1042 pmu_request(&req
, NULL
, 1, PMU_ADB_POLL_OFF
);
1045 while (!req
.complete
)
1050 static int pmu_adb_autopoll(int devs
)
1052 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1056 return __pmu_adb_autopoll(devs
);
1059 /* Reset the ADB bus */
1060 static int pmu_adb_reset_bus(void)
1062 struct adb_request req
;
1063 int save_autopoll
= adb_dev_map
;
1065 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1068 /* anyone got a better idea?? */
1069 __pmu_adb_autopoll(0);
1073 req
.data
[0] = PMU_ADB_CMD
;
1074 req
.data
[1] = ADB_BUSRESET
;
1079 req
.reply_expected
= 1;
1080 if (pmu_queue_request(&req
) != 0) {
1081 printk(KERN_ERR
"pmu_adb_reset_bus: pmu_queue_request failed\n");
1084 pmu_wait_complete(&req
);
1086 if (save_autopoll
!= 0)
1087 __pmu_adb_autopoll(save_autopoll
);
1091 #endif /* CONFIG_ADB */
1093 /* Construct and send a pmu request */
1095 pmu_request(struct adb_request
*req
, void (*done
)(struct adb_request
*),
1104 if (nbytes
< 0 || nbytes
> 32) {
1105 printk(KERN_ERR
"pmu_request: bad nbytes (%d)\n", nbytes
);
1109 req
->nbytes
= nbytes
;
1111 va_start(list
, nbytes
);
1112 for (i
= 0; i
< nbytes
; ++i
)
1113 req
->data
[i
] = va_arg(list
, int);
1116 req
->reply_expected
= 0;
1117 return pmu_queue_request(req
);
1121 pmu_queue_request(struct adb_request
*req
)
1123 unsigned long flags
;
1130 if (req
->nbytes
<= 0) {
1134 nsend
= pmu_data_len
[req
->data
[0]][0];
1135 if (nsend
>= 0 && req
->nbytes
!= nsend
+ 1) {
1144 spin_lock_irqsave(&pmu_lock
, flags
);
1145 if (current_req
!= 0) {
1146 last_req
->next
= req
;
1151 if (pmu_state
== idle
)
1154 spin_unlock_irqrestore(&pmu_lock
, flags
);
1162 /* Sightly increased the delay, I had one occurrence of the message
1166 while ((in_8(&via
[B
]) & TACK
) == 0) {
1167 if (--timeout
< 0) {
1168 printk(KERN_ERR
"PMU not responding (!ack)\n");
1175 /* New PMU seems to be very sensitive to those timings, so we make sure
1176 * PCI is flushed immediately */
1180 volatile unsigned char __iomem
*v
= via
;
1182 out_8(&v
[ACR
], in_8(&v
[ACR
]) | SR_OUT
| SR_EXT
);
1184 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
); /* assert TREQ */
1191 volatile unsigned char __iomem
*v
= via
;
1193 out_8(&v
[ACR
], (in_8(&v
[ACR
]) & ~SR_OUT
) | SR_EXT
);
1194 in_8(&v
[SR
]); /* resets SR */
1195 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
);
1200 pmu_done(struct adb_request
*req
)
1202 void (*done
)(struct adb_request
*) = req
->done
;
1205 /* Here, we assume that if the request has a done member, the
1206 * struct request will survive to setting req->complete to 1
1215 struct adb_request
*req
;
1217 /* assert pmu_state == idle */
1218 /* get the packet to send */
1220 if (req
== 0 || pmu_state
!= idle
1221 || (/*req->reply_expected && */req_awaiting_reply
))
1224 pmu_state
= sending
;
1226 data_len
= pmu_data_len
[req
->data
[0]][0];
1228 /* Sounds safer to make sure ACK is high before writing. This helped
1229 * kill a problem with ADB and some iBooks
1232 /* set the shift register to shift out and send a byte */
1233 send_byte(req
->data
[0]);
1243 via_pmu_interrupt(0, NULL
);
1253 /* Kicks ADB read when PMU is suspended */
1254 adb_int_pending
= 1;
1256 via_pmu_interrupt(0, NULL
);
1257 } while (pmu_suspended
&& (adb_int_pending
|| pmu_state
!= idle
1258 || req_awaiting_reply
));
1262 pmu_wait_complete(struct adb_request
*req
)
1266 while((pmu_state
!= idle
&& pmu_state
!= locked
) || !req
->complete
)
1267 via_pmu_interrupt(0, NULL
);
1270 /* This function loops until the PMU is idle and prevents it from
1271 * anwsering to ADB interrupts. pmu_request can still be called.
1272 * This is done to avoid spurrious shutdowns when we know we'll have
1273 * interrupts switched off for a long time
1278 unsigned long flags
;
1283 spin_lock_irqsave(&pmu_lock
, flags
);
1285 if (pmu_suspended
> 1) {
1286 spin_unlock_irqrestore(&pmu_lock
, flags
);
1291 spin_unlock_irqrestore(&pmu_lock
, flags
);
1292 if (req_awaiting_reply
)
1293 adb_int_pending
= 1;
1294 via_pmu_interrupt(0, NULL
);
1295 spin_lock_irqsave(&pmu_lock
, flags
);
1296 if (!adb_int_pending
&& pmu_state
== idle
&& !req_awaiting_reply
) {
1298 disable_irq_nosync(gpio_irq
);
1299 out_8(&via
[IER
], CB1_INT
| IER_CLR
);
1300 spin_unlock_irqrestore(&pmu_lock
, flags
);
1309 unsigned long flags
;
1311 if (!via
|| (pmu_suspended
< 1))
1314 spin_lock_irqsave(&pmu_lock
, flags
);
1316 if (pmu_suspended
> 0) {
1317 spin_unlock_irqrestore(&pmu_lock
, flags
);
1320 adb_int_pending
= 1;
1322 enable_irq(gpio_irq
);
1323 out_8(&via
[IER
], CB1_INT
| IER_SET
);
1324 spin_unlock_irqrestore(&pmu_lock
, flags
);
1328 /* Interrupt data could be the result data from an ADB cmd */
1330 pmu_handle_data(unsigned char *data
, int len
)
1332 unsigned char ints
, pirq
;
1336 if (drop_interrupts
|| len
< 1) {
1337 adb_int_pending
= 0;
1342 /* Get PMU interrupt mask */
1345 /* Record zero interrupts for stats */
1349 /* Hack to deal with ADB autopoll flag */
1350 if (ints
& PMU_INT_ADB
)
1351 ints
&= ~(PMU_INT_ADB_AUTO
| PMU_INT_AUTO_SRQ_POLL
);
1356 if (i
> pmu_irq_stats
[10])
1357 pmu_irq_stats
[10] = i
;
1361 for (pirq
= 0; pirq
< 8; pirq
++)
1362 if (ints
& (1 << pirq
))
1364 pmu_irq_stats
[pirq
]++;
1366 ints
&= ~(1 << pirq
);
1368 /* Note: for some reason, we get an interrupt with len=1,
1369 * data[0]==0 after each normal ADB interrupt, at least
1370 * on the Pismo. Still investigating... --BenH
1372 if ((1 << pirq
) & PMU_INT_ADB
) {
1373 if ((data
[0] & PMU_INT_ADB_AUTO
) == 0) {
1374 struct adb_request
*req
= req_awaiting_reply
;
1376 printk(KERN_ERR
"PMU: extra ADB reply\n");
1379 req_awaiting_reply
= NULL
;
1383 memcpy(req
->reply
, data
+ 1, len
- 1);
1384 req
->reply_len
= len
- 1;
1388 if (len
== 4 && data
[1] == 0x2c) {
1389 extern int xmon_wants_key
, xmon_adb_keycode
;
1390 if (xmon_wants_key
) {
1391 xmon_adb_keycode
= data
[2];
1397 * XXX On the [23]400 the PMU gives us an up
1398 * event for keycodes 0x74 or 0x75 when the PC
1399 * card eject buttons are released, so we
1400 * ignore those events.
1402 if (!(pmu_kind
== PMU_OHARE_BASED
&& len
== 4
1403 && data
[1] == 0x2c && data
[3] == 0xff
1404 && (data
[2] & ~1) == 0xf4))
1405 adb_input(data
+1, len
-1, 1);
1406 #endif /* CONFIG_ADB */
1409 /* Sound/brightness button pressed */
1410 else if ((1 << pirq
) & PMU_INT_SNDBRT
) {
1411 #ifdef CONFIG_PMAC_BACKLIGHT
1413 pmac_backlight_set_legacy_brightness_pmu(data
[1] >> 4);
1416 /* Tick interrupt */
1417 else if ((1 << pirq
) & PMU_INT_TICK
) {
1418 /* Environement or tick interrupt, query batteries */
1419 if (pmu_battery_count
) {
1420 if ((--query_batt_timer
) == 0) {
1421 query_battery_state();
1422 query_batt_timer
= BATTERY_POLLING_COUNT
;
1426 else if ((1 << pirq
) & PMU_INT_ENVIRONMENT
) {
1427 if (pmu_battery_count
)
1428 query_battery_state();
1429 pmu_pass_intr(data
, len
);
1430 /* len == 6 is probably a bad check. But how do I
1431 * know what PMU versions send what events here? */
1433 via_pmu_event(PMU_EVT_POWER
, !!(data
[1]&8));
1434 via_pmu_event(PMU_EVT_LID
, data
[1]&1);
1437 pmu_pass_intr(data
, len
);
1442 static struct adb_request
*
1445 struct adb_request
*req
;
1448 if (via
[B
] & TREQ
) {
1449 printk(KERN_ERR
"PMU: spurious SR intr (%x)\n", via
[B
]);
1450 out_8(&via
[IFR
], SR_INT
);
1453 /* The ack may not yet be low when we get the interrupt */
1454 while ((in_8(&via
[B
]) & TACK
) != 0)
1457 /* if reading grab the byte, and reset the interrupt */
1458 if (pmu_state
== reading
|| pmu_state
== reading_intr
)
1459 bite
= in_8(&via
[SR
]);
1461 /* reset TREQ and wait for TACK to go high */
1462 out_8(&via
[B
], in_8(&via
[B
]) | TREQ
);
1465 switch (pmu_state
) {
1469 data_len
= req
->nbytes
- 1;
1470 send_byte(data_len
);
1473 if (data_index
<= data_len
) {
1474 send_byte(req
->data
[data_index
++]);
1478 data_len
= pmu_data_len
[req
->data
[0]][1];
1479 if (data_len
== 0) {
1481 current_req
= req
->next
;
1482 if (req
->reply_expected
)
1483 req_awaiting_reply
= req
;
1487 pmu_state
= reading
;
1489 reply_ptr
= req
->reply
+ req
->reply_len
;
1497 pmu_state
= reading_intr
;
1498 reply_ptr
= interrupt_data
[int_data_last
];
1500 if (gpio_irq
>= 0 && !gpio_irq_enabled
) {
1501 enable_irq(gpio_irq
);
1502 gpio_irq_enabled
= 1;
1508 if (data_len
== -1) {
1511 printk(KERN_ERR
"PMU: bad reply len %d\n", bite
);
1512 } else if (data_index
< 32) {
1513 reply_ptr
[data_index
++] = bite
;
1515 if (data_index
< data_len
) {
1520 if (pmu_state
== reading_intr
) {
1522 int_data_state
[int_data_last
] = int_data_ready
;
1523 interrupt_data_len
[int_data_last
] = data_len
;
1527 * For PMU sleep and freq change requests, we lock the
1528 * PMU until it's explicitly unlocked. This avoids any
1529 * spurrious event polling getting in
1531 current_req
= req
->next
;
1532 req
->reply_len
+= data_index
;
1533 if (req
->data
[0] == PMU_SLEEP
|| req
->data
[0] == PMU_CPU_SPEED
)
1542 printk(KERN_ERR
"via_pmu_interrupt: unknown state %d?\n",
1549 via_pmu_interrupt(int irq
, void *arg
)
1551 unsigned long flags
;
1555 struct adb_request
*req
= NULL
;
1558 /* This is a bit brutal, we can probably do better */
1559 spin_lock_irqsave(&pmu_lock
, flags
);
1563 intr
= in_8(&via
[IFR
]) & (SR_INT
| CB1_INT
);
1567 if (++nloop
> 1000) {
1568 printk(KERN_DEBUG
"PMU: stuck in intr loop, "
1569 "intr=%x, ier=%x pmu_state=%d\n",
1570 intr
, in_8(&via
[IER
]), pmu_state
);
1573 out_8(&via
[IFR
], intr
);
1574 if (intr
& CB1_INT
) {
1575 adb_int_pending
= 1;
1578 if (intr
& SR_INT
) {
1579 req
= pmu_sr_intr();
1586 if (pmu_state
== idle
) {
1587 if (adb_int_pending
) {
1588 if (int_data_state
[0] == int_data_empty
)
1590 else if (int_data_state
[1] == int_data_empty
)
1595 int_data_state
[int_data_last
] = int_data_fill
;
1596 /* Sounds safer to make sure ACK is high before writing.
1597 * This helped kill a problem with ADB and some iBooks
1600 send_byte(PMU_INT_ACK
);
1601 adb_int_pending
= 0;
1602 } else if (current_req
)
1606 /* Mark the oldest buffer for flushing */
1607 if (int_data_state
[!int_data_last
] == int_data_ready
) {
1608 int_data_state
[!int_data_last
] = int_data_flush
;
1609 int_data
= !int_data_last
;
1610 } else if (int_data_state
[int_data_last
] == int_data_ready
) {
1611 int_data_state
[int_data_last
] = int_data_flush
;
1612 int_data
= int_data_last
;
1615 spin_unlock_irqrestore(&pmu_lock
, flags
);
1617 /* Deal with completed PMU requests outside of the lock */
1623 /* Deal with interrupt datas outside of the lock */
1624 if (int_data
>= 0) {
1625 pmu_handle_data(interrupt_data
[int_data
], interrupt_data_len
[int_data
]);
1626 spin_lock_irqsave(&pmu_lock
, flags
);
1628 int_data_state
[int_data
] = int_data_empty
;
1633 return IRQ_RETVAL(handled
);
1639 unsigned long flags
;
1641 spin_lock_irqsave(&pmu_lock
, flags
);
1642 if (pmu_state
== locked
)
1644 adb_int_pending
= 1;
1645 spin_unlock_irqrestore(&pmu_lock
, flags
);
1650 gpio1_interrupt(int irq
, void *arg
)
1652 unsigned long flags
;
1654 if ((in_8(gpio_reg
+ 0x9) & 0x02) == 0) {
1655 spin_lock_irqsave(&pmu_lock
, flags
);
1656 if (gpio_irq_enabled
> 0) {
1657 disable_irq_nosync(gpio_irq
);
1658 gpio_irq_enabled
= 0;
1661 adb_int_pending
= 1;
1662 spin_unlock_irqrestore(&pmu_lock
, flags
);
1663 via_pmu_interrupt(0, NULL
);
1670 pmu_enable_irled(int on
)
1672 struct adb_request req
;
1676 if (pmu_kind
== PMU_KEYLARGO_BASED
)
1679 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
, PMU_POW_IRLED
|
1680 (on
? PMU_POW_ON
: PMU_POW_OFF
));
1681 pmu_wait_complete(&req
);
1687 struct adb_request req
;
1692 local_irq_disable();
1694 drop_interrupts
= 1;
1696 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1697 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1699 while(!req
.complete
)
1703 pmu_request(&req
, NULL
, 1, PMU_RESET
);
1704 pmu_wait_complete(&req
);
1712 struct adb_request req
;
1717 local_irq_disable();
1719 drop_interrupts
= 1;
1721 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1722 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1724 pmu_wait_complete(&req
);
1726 /* Disable server mode on shutdown or we'll just
1729 pmu_set_server_mode(0);
1732 pmu_request(&req
, NULL
, 5, PMU_SHUTDOWN
,
1733 'M', 'A', 'T', 'T');
1734 pmu_wait_complete(&req
);
1745 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
1747 * Put the powerbook to sleep.
1750 static u32 save_via
[8];
1753 save_via_state(void)
1755 save_via
[0] = in_8(&via
[ANH
]);
1756 save_via
[1] = in_8(&via
[DIRA
]);
1757 save_via
[2] = in_8(&via
[B
]);
1758 save_via
[3] = in_8(&via
[DIRB
]);
1759 save_via
[4] = in_8(&via
[PCR
]);
1760 save_via
[5] = in_8(&via
[ACR
]);
1761 save_via
[6] = in_8(&via
[T1CL
]);
1762 save_via
[7] = in_8(&via
[T1CH
]);
1765 restore_via_state(void)
1767 out_8(&via
[ANH
], save_via
[0]);
1768 out_8(&via
[DIRA
], save_via
[1]);
1769 out_8(&via
[B
], save_via
[2]);
1770 out_8(&via
[DIRB
], save_via
[3]);
1771 out_8(&via
[PCR
], save_via
[4]);
1772 out_8(&via
[ACR
], save_via
[5]);
1773 out_8(&via
[T1CL
], save_via
[6]);
1774 out_8(&via
[T1CH
], save_via
[7]);
1775 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
1776 out_8(&via
[IFR
], 0x7f); /* clear IFR */
1777 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
1780 #define GRACKLE_PM (1<<7)
1781 #define GRACKLE_DOZE (1<<5)
1782 #define GRACKLE_NAP (1<<4)
1783 #define GRACKLE_SLEEP (1<<3)
1785 static int powerbook_sleep_grackle(void)
1787 unsigned long save_l2cr
;
1788 unsigned short pmcr1
;
1789 struct adb_request req
;
1790 struct pci_dev
*grackle
;
1792 grackle
= pci_get_bus_and_slot(0, 0);
1796 /* Turn off various things. Darwin does some retry tests here... */
1797 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
, PMU_POW0_OFF
|PMU_POW0_HARD_DRIVE
);
1798 pmu_wait_complete(&req
);
1799 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
1800 PMU_POW_OFF
|PMU_POW_BACKLIGHT
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
1801 pmu_wait_complete(&req
);
1803 /* For 750, save backside cache setting and disable it */
1804 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
1806 if (!__fake_sleep
) {
1807 /* Ask the PMU to put us to sleep */
1808 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
1809 pmu_wait_complete(&req
);
1812 /* The VIA is supposed not to be restored correctly*/
1814 /* We shut down some HW */
1815 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
1817 pci_read_config_word(grackle
, 0x70, &pmcr1
);
1818 /* Apparently, MacOS uses NAP mode for Grackle ??? */
1819 pmcr1
&= ~(GRACKLE_DOZE
|GRACKLE_SLEEP
);
1820 pmcr1
|= GRACKLE_PM
|GRACKLE_NAP
;
1821 pci_write_config_word(grackle
, 0x70, pmcr1
);
1823 /* Call low-level ASM sleep handler */
1827 low_sleep_handler();
1829 /* We're awake again, stop grackle PM */
1830 pci_read_config_word(grackle
, 0x70, &pmcr1
);
1831 pmcr1
&= ~(GRACKLE_PM
|GRACKLE_DOZE
|GRACKLE_SLEEP
|GRACKLE_NAP
);
1832 pci_write_config_word(grackle
, 0x70, pmcr1
);
1834 pci_dev_put(grackle
);
1836 /* Make sure the PMU is idle */
1837 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
1838 restore_via_state();
1840 /* Restore L2 cache */
1841 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
1842 _set_L2CR(save_l2cr
);
1844 /* Restore userland MMU context */
1845 switch_mmu_context(NULL
, current
->active_mm
);
1847 /* Power things up */
1849 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
1850 pmu_wait_complete(&req
);
1851 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
,
1852 PMU_POW0_ON
|PMU_POW0_HARD_DRIVE
);
1853 pmu_wait_complete(&req
);
1854 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
1855 PMU_POW_ON
|PMU_POW_BACKLIGHT
|PMU_POW_CHARGER
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
1856 pmu_wait_complete(&req
);
1862 powerbook_sleep_Core99(void)
1864 unsigned long save_l2cr
;
1865 unsigned long save_l3cr
;
1866 struct adb_request req
;
1868 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0) {
1869 printk(KERN_ERR
"Sleep mode not supported on this machine\n");
1873 if (num_online_cpus() > 1 || cpu_is_offline(0))
1876 /* Stop environment and ADB interrupts */
1877 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
1878 pmu_wait_complete(&req
);
1880 /* Tell PMU what events will wake us up */
1881 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_CLR_WAKEUP_EVENTS
,
1883 pmu_wait_complete(&req
);
1884 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_SET_WAKEUP_EVENTS
,
1885 0, PMU_PWR_WAKEUP_KEY
|
1886 (option_lid_wakeup
? PMU_PWR_WAKEUP_LID_OPEN
: 0));
1887 pmu_wait_complete(&req
);
1889 /* Save the state of the L2 and L3 caches */
1890 save_l3cr
= _get_L3CR(); /* (returns -1 if not available) */
1891 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
1893 if (!__fake_sleep
) {
1894 /* Ask the PMU to put us to sleep */
1895 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
1896 pmu_wait_complete(&req
);
1899 /* The VIA is supposed not to be restored correctly*/
1902 /* Shut down various ASICs. There's a chance that we can no longer
1903 * talk to the PMU after this, so I moved it to _after_ sending the
1904 * sleep command to it. Still need to be checked.
1906 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 1);
1908 /* Call low-level ASM sleep handler */
1912 low_sleep_handler();
1914 /* Restore Apple core ASICs state */
1915 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 0);
1918 restore_via_state();
1920 /* tweak LPJ before cpufreq is there */
1921 loops_per_jiffy
*= 2;
1924 pmac_call_early_video_resume();
1926 /* Restore L2 cache */
1927 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
1928 _set_L2CR(save_l2cr
);
1929 /* Restore L3 cache */
1930 if (save_l3cr
!= 0xffffffff && (save_l3cr
& L3CR_L3E
) != 0)
1931 _set_L3CR(save_l3cr
);
1933 /* Restore userland MMU context */
1934 switch_mmu_context(NULL
, current
->active_mm
);
1936 /* Tell PMU we are ready */
1938 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
1939 pmu_wait_complete(&req
);
1940 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
1941 pmu_wait_complete(&req
);
1943 /* Restore LPJ, cpufreq will adjust the cpu frequency */
1944 loops_per_jiffy
/= 2;
1949 #define PB3400_MEM_CTRL 0xf8000000
1950 #define PB3400_MEM_CTRL_SLEEP 0x70
1952 static void __iomem
*pb3400_mem_ctrl
;
1954 static void powerbook_sleep_init_3400(void)
1956 /* map in the memory controller registers */
1957 pb3400_mem_ctrl
= ioremap(PB3400_MEM_CTRL
, 0x100);
1958 if (pb3400_mem_ctrl
== NULL
)
1959 printk(KERN_WARNING
"ioremap failed: sleep won't be possible");
1962 static int powerbook_sleep_3400(void)
1967 struct adb_request sleep_req
;
1968 unsigned int __iomem
*mem_ctrl_sleep
;
1970 if (pb3400_mem_ctrl
== NULL
)
1972 mem_ctrl_sleep
= pb3400_mem_ctrl
+ PB3400_MEM_CTRL_SLEEP
;
1974 /* Set the memory controller to keep the memory refreshed
1975 while we're asleep */
1976 for (i
= 0x403f; i
>= 0x4000; --i
) {
1977 out_be32(mem_ctrl_sleep
, i
);
1979 x
= (in_be32(mem_ctrl_sleep
) >> 16) & 0x3ff;
1985 /* Ask the PMU to put us to sleep */
1986 pmu_request(&sleep_req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
1987 pmu_wait_complete(&sleep_req
);
1990 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 1);
1994 /* Put the CPU into sleep mode */
1995 hid0
= mfspr(SPRN_HID0
);
1996 hid0
= (hid0
& ~(HID0_NAP
| HID0_DOZE
)) | HID0_SLEEP
;
1997 mtspr(SPRN_HID0
, hid0
);
1999 msr
= mfmsr() | MSR_POW
;
2005 local_irq_disable();
2007 /* OK, we're awake again, start restoring things */
2008 out_be32(mem_ctrl_sleep
, 0x3f);
2009 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 0);
2014 #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
2017 * Support for /dev/pmu device
2019 #define RB_SIZE 0x10
2020 struct pmu_private
{
2021 struct list_head list
;
2026 unsigned char data
[16];
2028 wait_queue_head_t wait
;
2030 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2031 int backlight_locker
;
2035 static LIST_HEAD(all_pmu_pvt
);
2036 static DEFINE_SPINLOCK(all_pvt_lock
);
2039 pmu_pass_intr(unsigned char *data
, int len
)
2041 struct pmu_private
*pp
;
2042 struct list_head
*list
;
2044 unsigned long flags
;
2046 if (len
> sizeof(pp
->rb_buf
[0].data
))
2047 len
= sizeof(pp
->rb_buf
[0].data
);
2048 spin_lock_irqsave(&all_pvt_lock
, flags
);
2049 for (list
= &all_pmu_pvt
; (list
= list
->next
) != &all_pmu_pvt
; ) {
2050 pp
= list_entry(list
, struct pmu_private
, list
);
2051 spin_lock(&pp
->lock
);
2055 if (i
!= pp
->rb_get
) {
2056 struct rb_entry
*rp
= &pp
->rb_buf
[pp
->rb_put
];
2058 memcpy(rp
->data
, data
, len
);
2060 wake_up_interruptible(&pp
->wait
);
2062 spin_unlock(&pp
->lock
);
2064 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2068 pmu_open(struct inode
*inode
, struct file
*file
)
2070 struct pmu_private
*pp
;
2071 unsigned long flags
;
2073 pp
= kmalloc(sizeof(struct pmu_private
), GFP_KERNEL
);
2076 pp
->rb_get
= pp
->rb_put
= 0;
2077 spin_lock_init(&pp
->lock
);
2078 init_waitqueue_head(&pp
->wait
);
2080 spin_lock_irqsave(&all_pvt_lock
, flags
);
2081 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2082 pp
->backlight_locker
= 0;
2084 list_add(&pp
->list
, &all_pmu_pvt
);
2085 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2086 file
->private_data
= pp
;
2092 pmu_read(struct file
*file
, char __user
*buf
,
2093 size_t count
, loff_t
*ppos
)
2095 struct pmu_private
*pp
= file
->private_data
;
2096 DECLARE_WAITQUEUE(wait
, current
);
2097 unsigned long flags
;
2100 if (count
< 1 || pp
== 0)
2102 if (!access_ok(VERIFY_WRITE
, buf
, count
))
2105 spin_lock_irqsave(&pp
->lock
, flags
);
2106 add_wait_queue(&pp
->wait
, &wait
);
2107 current
->state
= TASK_INTERRUPTIBLE
;
2111 if (pp
->rb_get
!= pp
->rb_put
) {
2113 struct rb_entry
*rp
= &pp
->rb_buf
[i
];
2115 spin_unlock_irqrestore(&pp
->lock
, flags
);
2118 if (ret
> 0 && copy_to_user(buf
, rp
->data
, ret
))
2122 spin_lock_irqsave(&pp
->lock
, flags
);
2127 if (file
->f_flags
& O_NONBLOCK
)
2130 if (signal_pending(current
))
2132 spin_unlock_irqrestore(&pp
->lock
, flags
);
2134 spin_lock_irqsave(&pp
->lock
, flags
);
2136 current
->state
= TASK_RUNNING
;
2137 remove_wait_queue(&pp
->wait
, &wait
);
2138 spin_unlock_irqrestore(&pp
->lock
, flags
);
2144 pmu_write(struct file
*file
, const char __user
*buf
,
2145 size_t count
, loff_t
*ppos
)
2151 pmu_fpoll(struct file
*filp
, poll_table
*wait
)
2153 struct pmu_private
*pp
= filp
->private_data
;
2154 unsigned int mask
= 0;
2155 unsigned long flags
;
2159 poll_wait(filp
, &pp
->wait
, wait
);
2160 spin_lock_irqsave(&pp
->lock
, flags
);
2161 if (pp
->rb_get
!= pp
->rb_put
)
2163 spin_unlock_irqrestore(&pp
->lock
, flags
);
2168 pmu_release(struct inode
*inode
, struct file
*file
)
2170 struct pmu_private
*pp
= file
->private_data
;
2171 unsigned long flags
;
2174 file
->private_data
= NULL
;
2175 spin_lock_irqsave(&all_pvt_lock
, flags
);
2176 list_del(&pp
->list
);
2177 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2179 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2180 if (pp
->backlight_locker
)
2181 pmac_backlight_enable();
2189 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
2190 static void pmac_suspend_disable_irqs(void)
2192 /* Call platform functions marked "on sleep" */
2193 pmac_pfunc_i2c_suspend();
2194 pmac_pfunc_base_suspend();
2197 static int powerbook_sleep(suspend_state_t state
)
2201 /* Wait for completion of async requests */
2202 while (!batt_req
.complete
)
2205 /* Giveup the lazy FPU & vec so we don't have to back them
2206 * up from the low level code
2210 #ifdef CONFIG_ALTIVEC
2211 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
2212 enable_kernel_altivec();
2213 #endif /* CONFIG_ALTIVEC */
2216 case PMU_OHARE_BASED
:
2217 error
= powerbook_sleep_3400();
2219 case PMU_HEATHROW_BASED
:
2220 case PMU_PADDINGTON_BASED
:
2221 error
= powerbook_sleep_grackle();
2223 case PMU_KEYLARGO_BASED
:
2224 error
= powerbook_sleep_Core99();
2238 static void pmac_suspend_enable_irqs(void)
2240 /* Force a poll of ADB interrupts */
2241 adb_int_pending
= 1;
2242 via_pmu_interrupt(0, NULL
);
2246 /* Call platform functions marked "on wake" */
2247 pmac_pfunc_base_resume();
2248 pmac_pfunc_i2c_resume();
2251 static int pmu_sleep_valid(suspend_state_t state
)
2253 return state
== PM_SUSPEND_MEM
2254 && (pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, -1) >= 0);
2257 static struct platform_suspend_ops pmu_pm_ops
= {
2258 .enter
= powerbook_sleep
,
2259 .valid
= pmu_sleep_valid
,
2262 static int register_pmu_pm_ops(void)
2264 if (pmu_kind
== PMU_OHARE_BASED
)
2265 powerbook_sleep_init_3400();
2266 ppc_md
.suspend_disable_irqs
= pmac_suspend_disable_irqs
;
2267 ppc_md
.suspend_enable_irqs
= pmac_suspend_enable_irqs
;
2268 suspend_set_ops(&pmu_pm_ops
);
2273 device_initcall(register_pmu_pm_ops
);
2276 static int pmu_ioctl(struct file
*filp
,
2277 u_int cmd
, u_long arg
)
2279 __u32 __user
*argp
= (__u32 __user
*)arg
;
2280 int error
= -EINVAL
;
2284 if (!capable(CAP_SYS_ADMIN
))
2286 return pm_suspend(PM_SUSPEND_MEM
);
2287 case PMU_IOC_CAN_SLEEP
:
2288 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, -1) < 0)
2289 return put_user(0, argp
);
2291 return put_user(1, argp
);
2293 #ifdef CONFIG_PMAC_BACKLIGHT_LEGACY
2294 /* Compatibility ioctl's for backlight */
2295 case PMU_IOC_GET_BACKLIGHT
:
2299 brightness
= pmac_backlight_get_legacy_brightness();
2303 return put_user(brightness
, argp
);
2306 case PMU_IOC_SET_BACKLIGHT
:
2310 error
= get_user(brightness
, argp
);
2314 return pmac_backlight_set_legacy_brightness(brightness
);
2316 #ifdef CONFIG_INPUT_ADBHID
2317 case PMU_IOC_GRAB_BACKLIGHT
: {
2318 struct pmu_private
*pp
= filp
->private_data
;
2320 if (pp
->backlight_locker
)
2323 pp
->backlight_locker
= 1;
2324 pmac_backlight_disable();
2328 #endif /* CONFIG_INPUT_ADBHID */
2329 #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */
2331 case PMU_IOC_GET_MODEL
:
2332 return put_user(pmu_kind
, argp
);
2333 case PMU_IOC_HAS_ADB
:
2334 return put_user(pmu_has_adb
, argp
);
2339 static long pmu_unlocked_ioctl(struct file
*filp
,
2340 u_int cmd
, u_long arg
)
2345 ret
= pmu_ioctl(filp
, cmd
, arg
);
2351 static const struct file_operations pmu_device_fops
= {
2355 .unlocked_ioctl
= pmu_unlocked_ioctl
,
2357 .release
= pmu_release
,
2360 static struct miscdevice pmu_device
= {
2361 PMU_MINOR
, "pmu", &pmu_device_fops
2364 static int pmu_device_init(void)
2368 if (misc_register(&pmu_device
) < 0)
2369 printk(KERN_ERR
"via-pmu: cannot register misc device.\n");
2372 device_initcall(pmu_device_init
);
2377 polled_handshake(volatile unsigned char __iomem
*via
)
2379 via
[B
] &= ~TREQ
; eieio();
2380 while ((via
[B
] & TACK
) != 0)
2382 via
[B
] |= TREQ
; eieio();
2383 while ((via
[B
] & TACK
) == 0)
2388 polled_send_byte(volatile unsigned char __iomem
*via
, int x
)
2390 via
[ACR
] |= SR_OUT
| SR_EXT
; eieio();
2391 via
[SR
] = x
; eieio();
2392 polled_handshake(via
);
2396 polled_recv_byte(volatile unsigned char __iomem
*via
)
2400 via
[ACR
] = (via
[ACR
] & ~SR_OUT
) | SR_EXT
; eieio();
2401 x
= via
[SR
]; eieio();
2402 polled_handshake(via
);
2403 x
= via
[SR
]; eieio();
2408 pmu_polled_request(struct adb_request
*req
)
2410 unsigned long flags
;
2412 volatile unsigned char __iomem
*v
= via
;
2416 l
= pmu_data_len
[c
][0];
2417 if (l
>= 0 && req
->nbytes
!= l
+ 1)
2420 local_irq_save(flags
);
2421 while (pmu_state
!= idle
)
2424 while ((via
[B
] & TACK
) == 0)
2426 polled_send_byte(v
, c
);
2428 l
= req
->nbytes
- 1;
2429 polled_send_byte(v
, l
);
2431 for (i
= 1; i
<= l
; ++i
)
2432 polled_send_byte(v
, req
->data
[i
]);
2434 l
= pmu_data_len
[c
][1];
2436 l
= polled_recv_byte(v
);
2437 for (i
= 0; i
< l
; ++i
)
2438 req
->reply
[i
+ req
->reply_len
] = polled_recv_byte(v
);
2443 local_irq_restore(flags
);
2447 /* N.B. This doesn't work on the 3400 */
2448 void pmu_blink(int n
)
2450 struct adb_request req
;
2452 memset(&req
, 0, sizeof(req
));
2454 for (; n
> 0; --n
) {
2461 req
.reply
[0] = ADB_RET_OK
;
2463 req
.reply_expected
= 0;
2464 pmu_polled_request(&req
);
2472 req
.reply
[0] = ADB_RET_OK
;
2474 req
.reply_expected
= 0;
2475 pmu_polled_request(&req
);
2480 #endif /* DEBUG_SLEEP */
2482 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
2483 int pmu_sys_suspended
;
2485 static int pmu_sys_suspend(struct sys_device
*sysdev
, pm_message_t state
)
2487 if (state
.event
!= PM_EVENT_SUSPEND
|| pmu_sys_suspended
)
2490 /* Suspend PMU event interrupts */\
2492 pmu_sys_suspended
= 1;
2494 #ifdef CONFIG_PMAC_BACKLIGHT
2495 /* Tell backlight code not to muck around with the chip anymore */
2496 pmu_backlight_set_sleep(1);
2502 static int pmu_sys_resume(struct sys_device
*sysdev
)
2504 struct adb_request req
;
2506 if (!pmu_sys_suspended
)
2509 /* Tell PMU we are ready */
2510 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2511 pmu_wait_complete(&req
);
2513 #ifdef CONFIG_PMAC_BACKLIGHT
2514 /* Tell backlight code it can use the chip again */
2515 pmu_backlight_set_sleep(0);
2517 /* Resume PMU event interrupts */
2519 pmu_sys_suspended
= 0;
2524 #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
2526 static struct sysdev_class pmu_sysclass
= {
2530 static struct sys_device device_pmu
= {
2531 .cls
= &pmu_sysclass
,
2534 static struct sysdev_driver driver_pmu
= {
2535 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
2536 .suspend
= &pmu_sys_suspend
,
2537 .resume
= &pmu_sys_resume
,
2538 #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */
2541 static int __init
init_pmu_sysfs(void)
2545 rc
= sysdev_class_register(&pmu_sysclass
);
2547 printk(KERN_ERR
"Failed registering PMU sys class\n");
2550 rc
= sysdev_register(&device_pmu
);
2552 printk(KERN_ERR
"Failed registering PMU sys device\n");
2555 rc
= sysdev_driver_register(&pmu_sysclass
, &driver_pmu
);
2557 printk(KERN_ERR
"Failed registering PMU sys driver\n");
2563 subsys_initcall(init_pmu_sysfs
);
2565 EXPORT_SYMBOL(pmu_request
);
2566 EXPORT_SYMBOL(pmu_queue_request
);
2567 EXPORT_SYMBOL(pmu_poll
);
2568 EXPORT_SYMBOL(pmu_poll_adb
);
2569 EXPORT_SYMBOL(pmu_wait_complete
);
2570 EXPORT_SYMBOL(pmu_suspend
);
2571 EXPORT_SYMBOL(pmu_resume
);
2572 EXPORT_SYMBOL(pmu_unlock
);
2573 #if defined(CONFIG_PPC32)
2574 EXPORT_SYMBOL(pmu_enable_irled
);
2575 EXPORT_SYMBOL(pmu_battery_count
);
2576 EXPORT_SYMBOL(pmu_batteries
);
2577 EXPORT_SYMBOL(pmu_power_flags
);
2578 #endif /* CONFIG_SUSPEND && CONFIG_PPC32 */