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/freezer.h>
46 #include <linux/syscalls.h>
47 #include <linux/suspend.h>
48 #include <linux/cpu.h>
50 #include <asm/machdep.h>
52 #include <asm/pgtable.h>
53 #include <asm/system.h>
54 #include <asm/sections.h>
56 #include <asm/pmac_feature.h>
57 #include <asm/pmac_pfunc.h>
58 #include <asm/pmac_low_i2c.h>
59 #include <asm/uaccess.h>
60 #include <asm/mmu_context.h>
61 #include <asm/cputable.h>
63 #include <asm/backlight.h>
65 #include "via-pmu-event.h"
67 /* Some compile options */
68 #undef SUSPEND_USES_PMU
70 #undef HACKED_PCI_SAVE
72 /* Misc minor number allocated for /dev/pmu */
75 /* How many iterations between battery polls */
76 #define BATTERY_POLLING_COUNT 2
78 static volatile unsigned char __iomem
*via
;
80 /* VIA registers - spaced 0x200 bytes apart */
81 #define RS 0x200 /* skip between registers */
82 #define B 0 /* B-side data */
83 #define A RS /* A-side data */
84 #define DIRB (2*RS) /* B-side direction (1=output) */
85 #define DIRA (3*RS) /* A-side direction (1=output) */
86 #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
87 #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
88 #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
89 #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
90 #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
91 #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
92 #define SR (10*RS) /* Shift register */
93 #define ACR (11*RS) /* Auxiliary control register */
94 #define PCR (12*RS) /* Peripheral control register */
95 #define IFR (13*RS) /* Interrupt flag register */
96 #define IER (14*RS) /* Interrupt enable register */
97 #define ANH (15*RS) /* A-side data, no handshake */
99 /* Bits in B data register: both active low */
100 #define TACK 0x08 /* Transfer acknowledge (input) */
101 #define TREQ 0x10 /* Transfer request (output) */
104 #define SR_CTRL 0x1c /* Shift register control bits */
105 #define SR_EXT 0x0c /* Shift on external clock */
106 #define SR_OUT 0x10 /* Shift out if 1 */
108 /* Bits in IFR and IER */
109 #define IER_SET 0x80 /* set bits in IER */
110 #define IER_CLR 0 /* clear bits in IER */
111 #define SR_INT 0x04 /* Shift register full/empty */
113 #define CB1_INT 0x10 /* transition on CB1 input */
115 static volatile enum pmu_state
{
124 static volatile enum int_data_state
{
129 } int_data_state
[2] = { int_data_empty
, int_data_empty
};
131 static struct adb_request
*current_req
;
132 static struct adb_request
*last_req
;
133 static struct adb_request
*req_awaiting_reply
;
134 static unsigned char interrupt_data
[2][32];
135 static int interrupt_data_len
[2];
136 static int int_data_last
;
137 static unsigned char *reply_ptr
;
138 static int data_index
;
140 static volatile int adb_int_pending
;
141 static volatile int disable_poll
;
142 static struct device_node
*vias
;
143 static int pmu_kind
= PMU_UNKNOWN
;
144 static int pmu_fully_inited
;
145 static int pmu_has_adb
;
146 static struct device_node
*gpio_node
;
147 static unsigned char __iomem
*gpio_reg
;
148 static int gpio_irq
= NO_IRQ
;
149 static int gpio_irq_enabled
= -1;
150 static volatile int pmu_suspended
;
151 static spinlock_t pmu_lock
;
152 static u8 pmu_intr_mask
;
153 static int pmu_version
;
154 static int drop_interrupts
;
155 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
156 static int option_lid_wakeup
= 1;
157 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
158 #if (defined(CONFIG_PM_SLEEP)&&defined(CONFIG_PPC32))||defined(CONFIG_PMAC_BACKLIGHT_LEGACY)
159 static int sleep_in_progress
;
161 static unsigned long async_req_locks
;
162 static unsigned int pmu_irq_stats
[11];
164 static struct proc_dir_entry
*proc_pmu_root
;
165 static struct proc_dir_entry
*proc_pmu_info
;
166 static struct proc_dir_entry
*proc_pmu_irqstats
;
167 static struct proc_dir_entry
*proc_pmu_options
;
168 static int option_server_mode
;
170 int pmu_battery_count
;
172 unsigned int pmu_power_flags
= PMU_PWR_AC_PRESENT
;
173 struct pmu_battery_info pmu_batteries
[PMU_MAX_BATTERIES
];
174 static int query_batt_timer
= BATTERY_POLLING_COUNT
;
175 static struct adb_request batt_req
;
176 static struct proc_dir_entry
*proc_pmu_batt
[PMU_MAX_BATTERIES
];
180 BLOCKING_NOTIFIER_HEAD(sleep_notifier_list
);
183 static int adb_dev_map
;
184 static int pmu_adb_flags
;
186 static int pmu_probe(void);
187 static int pmu_init(void);
188 static int pmu_send_request(struct adb_request
*req
, int sync
);
189 static int pmu_adb_autopoll(int devs
);
190 static int pmu_adb_reset_bus(void);
191 #endif /* CONFIG_ADB */
193 static int init_pmu(void);
194 static void pmu_start(void);
195 static irqreturn_t
via_pmu_interrupt(int irq
, void *arg
);
196 static irqreturn_t
gpio1_interrupt(int irq
, void *arg
);
197 static int proc_get_info(char *page
, char **start
, off_t off
,
198 int count
, int *eof
, void *data
);
199 static int proc_get_irqstats(char *page
, char **start
, off_t off
,
200 int count
, int *eof
, void *data
);
201 static void pmu_pass_intr(unsigned char *data
, int len
);
202 static int proc_get_batt(char *page
, char **start
, off_t off
,
203 int count
, int *eof
, void *data
);
204 static int proc_read_options(char *page
, char **start
, off_t off
,
205 int count
, int *eof
, void *data
);
206 static int proc_write_options(struct file
*file
, const char __user
*buffer
,
207 unsigned long count
, void *data
);
210 struct adb_driver via_pmu_driver
= {
219 #endif /* CONFIG_ADB */
221 extern void low_sleep_handler(void);
222 extern void enable_kernel_altivec(void);
223 extern void enable_kernel_fp(void);
226 int pmu_polled_request(struct adb_request
*req
);
227 int pmu_wink(struct adb_request
*req
);
231 * This table indicates for each PMU opcode:
232 * - the number of data bytes to be sent with the command, or -1
233 * if a length byte should be sent,
234 * - the number of response bytes which the PMU will return, or
235 * -1 if it will send a length byte.
237 static const s8 pmu_data_len
[256][2] = {
238 /* 0 1 2 3 4 5 6 7 */
239 /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
240 /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
241 /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
242 /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
243 /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
244 /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
245 /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
246 /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
247 /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
248 /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
249 /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
250 /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
251 /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
252 /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
253 /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
254 /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
255 /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
256 /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
257 /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
258 /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
259 /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
260 /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
261 /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
262 /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
263 /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
264 /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
265 /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
266 /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
267 /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
268 /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
269 /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
270 /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
273 static char *pbook_type
[] = {
275 "PowerBook 2400/3400/3500(G3)",
276 "PowerBook G3 Series",
281 int __init
find_via_pmu(void)
288 vias
= of_find_node_by_name(NULL
, "via-pmu");
292 reg
= of_get_property(vias
, "reg", NULL
);
294 printk(KERN_ERR
"via-pmu: No \"reg\" property !\n");
297 taddr
= of_translate_address(vias
, reg
);
298 if (taddr
== OF_BAD_ADDR
) {
299 printk(KERN_ERR
"via-pmu: Can't translate address !\n");
303 spin_lock_init(&pmu_lock
);
307 pmu_intr_mask
= PMU_INT_PCEJECT
|
312 if (vias
->parent
->name
&& ((strcmp(vias
->parent
->name
, "ohare") == 0)
313 || of_device_is_compatible(vias
->parent
, "ohare")))
314 pmu_kind
= PMU_OHARE_BASED
;
315 else if (of_device_is_compatible(vias
->parent
, "paddington"))
316 pmu_kind
= PMU_PADDINGTON_BASED
;
317 else if (of_device_is_compatible(vias
->parent
, "heathrow"))
318 pmu_kind
= PMU_HEATHROW_BASED
;
319 else if (of_device_is_compatible(vias
->parent
, "Keylargo")
320 || of_device_is_compatible(vias
->parent
, "K2-Keylargo")) {
321 struct device_node
*gpiop
;
322 struct device_node
*adbp
;
323 u64 gaddr
= OF_BAD_ADDR
;
325 pmu_kind
= PMU_KEYLARGO_BASED
;
326 adbp
= of_find_node_by_type(NULL
, "adb");
327 pmu_has_adb
= (adbp
!= NULL
);
329 pmu_intr_mask
= PMU_INT_PCEJECT
|
335 gpiop
= of_find_node_by_name(NULL
, "gpio");
337 reg
= of_get_property(gpiop
, "reg", NULL
);
339 gaddr
= of_translate_address(gpiop
, reg
);
340 if (gaddr
!= OF_BAD_ADDR
)
341 gpio_reg
= ioremap(gaddr
, 0x10);
343 if (gpio_reg
== NULL
) {
344 printk(KERN_ERR
"via-pmu: Can't find GPIO reg !\n");
348 pmu_kind
= PMU_UNKNOWN
;
350 via
= ioremap(taddr
, 0x2000);
352 printk(KERN_ERR
"via-pmu: Can't map address !\n");
356 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
357 out_8(&via
[IFR
], 0x7f); /* clear IFR */
366 printk(KERN_INFO
"PMU driver v%d initialized for %s, firmware: %02x\n",
367 PMU_DRIVER_VERSION
, pbook_type
[pmu_kind
], pmu_version
);
369 sys_ctrler
= SYS_CTRLER_PMU
;
382 static int pmu_probe(void)
384 return vias
== NULL
? -ENODEV
: 0;
387 static int __init
pmu_init(void)
393 #endif /* CONFIG_ADB */
396 * We can't wait until pmu_init gets called, that happens too late.
397 * It happens after IDE and SCSI initialization, which can take a few
398 * seconds, and by that time the PMU could have given up on us and
400 * Thus this is called with arch_initcall rather than device_initcall.
402 static int __init
via_pmu_start(void)
409 batt_req
.complete
= 1;
411 irq
= irq_of_parse_and_map(vias
, 0);
413 printk(KERN_ERR
"via-pmu: can't map interrupt\n");
416 if (request_irq(irq
, via_pmu_interrupt
, 0, "VIA-PMU", (void *)0)) {
417 printk(KERN_ERR
"via-pmu: can't request irq %d\n", irq
);
421 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
422 gpio_node
= of_find_node_by_name(NULL
, "extint-gpio1");
423 if (gpio_node
== NULL
)
424 gpio_node
= of_find_node_by_name(NULL
,
427 gpio_irq
= irq_of_parse_and_map(gpio_node
, 0);
429 if (gpio_irq
!= NO_IRQ
) {
430 if (request_irq(gpio_irq
, gpio1_interrupt
, 0,
431 "GPIO1 ADB", (void *)0))
432 printk(KERN_ERR
"pmu: can't get irq %d"
433 " (GPIO1)\n", gpio_irq
);
435 gpio_irq_enabled
= 1;
439 /* Enable interrupts */
440 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
442 pmu_fully_inited
= 1;
444 /* Make sure PMU settle down before continuing. This is _very_ important
445 * since the IDE probe may shut interrupts down for quite a bit of time. If
446 * a PMU communication is pending while this happens, the PMU may timeout
447 * Not that on Core99 machines, the PMU keeps sending us environement
448 * messages, we should find a way to either fix IDE or make it call
449 * pmu_suspend() before masking interrupts. This can also happens while
450 * scolling with some fbdevs.
454 } while (pmu_state
!= idle
);
459 arch_initcall(via_pmu_start
);
462 * This has to be done after pci_init, which is a subsys_initcall.
464 static int __init
via_pmu_dev_init(void)
469 #ifdef CONFIG_PMAC_BACKLIGHT
470 /* Initialize backlight */
471 pmu_backlight_init();
475 if (machine_is_compatible("AAPL,3400/2400") ||
476 machine_is_compatible("AAPL,3500")) {
477 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
478 NULL
, PMAC_MB_INFO_MODEL
, 0);
479 pmu_battery_count
= 1;
480 if (mb
== PMAC_TYPE_COMET
)
481 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_COMET
;
483 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_HOOPER
;
484 } else if (machine_is_compatible("AAPL,PowerBook1998") ||
485 machine_is_compatible("PowerBook1,1")) {
486 pmu_battery_count
= 2;
487 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
488 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
490 struct device_node
* prim
=
491 of_find_node_by_name(NULL
, "power-mgt");
492 const u32
*prim_info
= NULL
;
494 prim_info
= of_get_property(prim
, "prim-info", NULL
);
496 /* Other stuffs here yet unknown */
497 pmu_battery_count
= (prim_info
[6] >> 16) & 0xff;
498 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
499 if (pmu_battery_count
> 1)
500 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
504 #endif /* CONFIG_PPC32 */
506 /* Create /proc/pmu */
507 proc_pmu_root
= proc_mkdir("pmu", NULL
);
511 for (i
=0; i
<pmu_battery_count
; i
++) {
513 sprintf(title
, "battery_%ld", i
);
514 proc_pmu_batt
[i
] = create_proc_read_entry(title
, 0, proc_pmu_root
,
515 proc_get_batt
, (void *)i
);
518 proc_pmu_info
= create_proc_read_entry("info", 0, proc_pmu_root
,
519 proc_get_info
, NULL
);
520 proc_pmu_irqstats
= create_proc_read_entry("interrupts", 0, proc_pmu_root
,
521 proc_get_irqstats
, NULL
);
522 proc_pmu_options
= create_proc_entry("options", 0600, proc_pmu_root
);
523 if (proc_pmu_options
) {
524 proc_pmu_options
->read_proc
= proc_read_options
;
525 proc_pmu_options
->write_proc
= proc_write_options
;
531 device_initcall(via_pmu_dev_init
);
537 struct adb_request req
;
539 out_8(&via
[B
], via
[B
] | TREQ
); /* negate TREQ */
540 out_8(&via
[DIRB
], (via
[DIRB
] | TREQ
) & ~TACK
); /* TACK in, TREQ out */
542 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
544 while (!req
.complete
) {
546 printk(KERN_ERR
"init_pmu: no response from PMU\n");
553 /* ack all pending interrupts */
555 interrupt_data
[0][0] = 1;
556 while (interrupt_data
[0][0] || pmu_state
!= idle
) {
558 printk(KERN_ERR
"init_pmu: timed out acking intrs\n");
561 if (pmu_state
== idle
)
563 via_pmu_interrupt(0, NULL
);
567 /* Tell PMU we are ready. */
568 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
569 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
570 while (!req
.complete
)
574 /* Read PMU version */
575 pmu_request(&req
, NULL
, 1, PMU_GET_VERSION
);
576 pmu_wait_complete(&req
);
577 if (req
.reply_len
> 0)
578 pmu_version
= req
.reply
[0];
580 /* Read server mode setting */
581 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
582 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
,
583 PMU_PWR_GET_POWERUP_EVENTS
);
584 pmu_wait_complete(&req
);
585 if (req
.reply_len
== 2) {
586 if (req
.reply
[1] & PMU_PWR_WAKEUP_AC_INSERT
)
587 option_server_mode
= 1;
588 printk(KERN_INFO
"via-pmu: Server Mode is %s\n",
589 option_server_mode
? "enabled" : "disabled");
601 static void pmu_set_server_mode(int server_mode
)
603 struct adb_request req
;
605 if (pmu_kind
!= PMU_KEYLARGO_BASED
)
608 option_server_mode
= server_mode
;
609 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
, PMU_PWR_GET_POWERUP_EVENTS
);
610 pmu_wait_complete(&req
);
611 if (req
.reply_len
< 2)
614 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
615 PMU_PWR_SET_POWERUP_EVENTS
,
616 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
618 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
619 PMU_PWR_CLR_POWERUP_EVENTS
,
620 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
621 pmu_wait_complete(&req
);
624 /* This new version of the code for 2400/3400/3500 powerbooks
625 * is inspired from the implementation in gkrellm-pmu
628 done_battery_state_ohare(struct adb_request
* req
)
632 * 0x01 : AC indicator
634 * 0x04 : battery exist
637 * 0x20 : full charged
638 * 0x40 : pcharge reset
639 * 0x80 : battery exist
641 * [1][2] : battery voltage
642 * [3] : CPU temperature
643 * [4] : battery temperature
648 unsigned int bat_flags
= PMU_BATT_TYPE_HOOPER
;
649 long pcharge
, charge
, vb
, vmax
, lmax
;
650 long vmax_charging
, vmax_charged
;
651 long amperage
, voltage
, time
, max
;
652 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
653 NULL
, PMAC_MB_INFO_MODEL
, 0);
655 if (req
->reply
[0] & 0x01)
656 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
658 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
660 if (mb
== PMAC_TYPE_COMET
) {
671 /* If battery installed */
672 if (req
->reply
[0] & 0x04) {
673 bat_flags
|= PMU_BATT_PRESENT
;
674 if (req
->reply
[0] & 0x02)
675 bat_flags
|= PMU_BATT_CHARGING
;
676 vb
= (req
->reply
[1] << 8) | req
->reply
[2];
677 voltage
= (vb
* 265 + 72665) / 10;
678 amperage
= req
->reply
[5];
679 if ((req
->reply
[0] & 0x01) == 0) {
681 vb
+= ((amperage
- 200) * 15)/100;
682 } else if (req
->reply
[0] & 0x02) {
683 vb
= (vb
* 97) / 100;
684 vmax
= vmax_charging
;
686 charge
= (100 * vb
) / vmax
;
687 if (req
->reply
[0] & 0x40) {
688 pcharge
= (req
->reply
[6] << 8) + req
->reply
[7];
692 pcharge
= 100 - pcharge
/ lmax
;
693 if (pcharge
< charge
)
697 time
= (charge
* 16440) / amperage
;
701 amperage
= -amperage
;
703 charge
= max
= amperage
= voltage
= time
= 0;
705 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
706 pmu_batteries
[pmu_cur_battery
].charge
= charge
;
707 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
708 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
709 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
710 pmu_batteries
[pmu_cur_battery
].time_remaining
= time
;
712 clear_bit(0, &async_req_locks
);
716 done_battery_state_smart(struct adb_request
* req
)
719 * [0] : format of this structure (known: 3,4,5)
732 * [4][5] : max charge
737 unsigned int bat_flags
= PMU_BATT_TYPE_SMART
;
739 unsigned int capa
, max
, voltage
;
741 if (req
->reply
[1] & 0x01)
742 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
744 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
747 capa
= max
= amperage
= voltage
= 0;
749 if (req
->reply
[1] & 0x04) {
750 bat_flags
|= PMU_BATT_PRESENT
;
751 switch(req
->reply
[0]) {
753 case 4: capa
= req
->reply
[2];
755 amperage
= *((signed char *)&req
->reply
[4]);
756 voltage
= req
->reply
[5];
758 case 5: capa
= (req
->reply
[2] << 8) | req
->reply
[3];
759 max
= (req
->reply
[4] << 8) | req
->reply
[5];
760 amperage
= *((signed short *)&req
->reply
[6]);
761 voltage
= (req
->reply
[8] << 8) | req
->reply
[9];
764 printk(KERN_WARNING
"pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
765 req
->reply_len
, req
->reply
[0], req
->reply
[1], req
->reply
[2], req
->reply
[3]);
770 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
771 bat_flags
|= PMU_BATT_CHARGING
;
773 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
774 pmu_batteries
[pmu_cur_battery
].charge
= capa
;
775 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
776 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
777 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
779 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
780 pmu_batteries
[pmu_cur_battery
].time_remaining
781 = ((max
-capa
) * 3600) / amperage
;
783 pmu_batteries
[pmu_cur_battery
].time_remaining
784 = (capa
* 3600) / (-amperage
);
786 pmu_batteries
[pmu_cur_battery
].time_remaining
= 0;
788 pmu_cur_battery
= (pmu_cur_battery
+ 1) % pmu_battery_count
;
790 clear_bit(0, &async_req_locks
);
794 query_battery_state(void)
796 if (test_and_set_bit(0, &async_req_locks
))
798 if (pmu_kind
== PMU_OHARE_BASED
)
799 pmu_request(&batt_req
, done_battery_state_ohare
,
800 1, PMU_BATTERY_STATE
);
802 pmu_request(&batt_req
, done_battery_state_smart
,
803 2, PMU_SMART_BATTERY_STATE
, pmu_cur_battery
+1);
807 proc_get_info(char *page
, char **start
, off_t off
,
808 int count
, int *eof
, void *data
)
812 p
+= sprintf(p
, "PMU driver version : %d\n", PMU_DRIVER_VERSION
);
813 p
+= sprintf(p
, "PMU firmware version : %02x\n", pmu_version
);
814 p
+= sprintf(p
, "AC Power : %d\n",
815 ((pmu_power_flags
& PMU_PWR_AC_PRESENT
) != 0) || pmu_battery_count
== 0);
816 p
+= sprintf(p
, "Battery count : %d\n", pmu_battery_count
);
822 proc_get_irqstats(char *page
, char **start
, off_t off
,
823 int count
, int *eof
, void *data
)
827 static const char *irq_names
[] = {
828 "Total CB1 triggered events",
829 "Total GPIO1 triggered events",
830 "PC-Card eject button",
831 "Sound/Brightness button",
833 "Battery state change",
834 "Environment interrupt",
836 "Ghost interrupt (zero len)",
837 "Empty interrupt (empty mask)",
841 for (i
=0; i
<11; i
++) {
842 p
+= sprintf(p
, " %2u: %10u (%s)\n",
843 i
, pmu_irq_stats
[i
], irq_names
[i
]);
849 proc_get_batt(char *page
, char **start
, off_t off
,
850 int count
, int *eof
, void *data
)
852 long batnum
= (long)data
;
855 p
+= sprintf(p
, "\n");
856 p
+= sprintf(p
, "flags : %08x\n",
857 pmu_batteries
[batnum
].flags
);
858 p
+= sprintf(p
, "charge : %d\n",
859 pmu_batteries
[batnum
].charge
);
860 p
+= sprintf(p
, "max_charge : %d\n",
861 pmu_batteries
[batnum
].max_charge
);
862 p
+= sprintf(p
, "current : %d\n",
863 pmu_batteries
[batnum
].amperage
);
864 p
+= sprintf(p
, "voltage : %d\n",
865 pmu_batteries
[batnum
].voltage
);
866 p
+= sprintf(p
, "time rem. : %d\n",
867 pmu_batteries
[batnum
].time_remaining
);
873 proc_read_options(char *page
, char **start
, off_t off
,
874 int count
, int *eof
, void *data
)
878 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
879 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
880 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
881 p
+= sprintf(p
, "lid_wakeup=%d\n", option_lid_wakeup
);
883 if (pmu_kind
== PMU_KEYLARGO_BASED
)
884 p
+= sprintf(p
, "server_mode=%d\n", option_server_mode
);
890 proc_write_options(struct file
*file
, const char __user
*buffer
,
891 unsigned long count
, void *data
)
895 unsigned long fcount
= count
;
901 if (copy_from_user(tmp
, buffer
, count
))
909 while(*val
&& (*val
!= '=')) {
919 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
920 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
921 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
922 if (!strcmp(label
, "lid_wakeup"))
923 option_lid_wakeup
= ((*val
) == '1');
925 if (pmu_kind
== PMU_KEYLARGO_BASED
&& !strcmp(label
, "server_mode")) {
927 new_value
= ((*val
) == '1');
928 if (new_value
!= option_server_mode
)
929 pmu_set_server_mode(new_value
);
935 /* Send an ADB command */
937 pmu_send_request(struct adb_request
*req
, int sync
)
941 if ((vias
== NULL
) || (!pmu_fully_inited
)) {
948 switch (req
->data
[0]) {
950 for (i
= 0; i
< req
->nbytes
- 1; ++i
)
951 req
->data
[i
] = req
->data
[i
+1];
953 if (pmu_data_len
[req
->data
[0]][1] != 0) {
954 req
->reply
[0] = ADB_RET_OK
;
958 ret
= pmu_queue_request(req
);
961 switch (req
->data
[1]) {
963 if (req
->nbytes
!= 2)
965 req
->data
[0] = PMU_READ_RTC
;
968 req
->reply
[0] = CUDA_PACKET
;
970 req
->reply
[2] = CUDA_GET_TIME
;
971 ret
= pmu_queue_request(req
);
974 if (req
->nbytes
!= 6)
976 req
->data
[0] = PMU_SET_RTC
;
978 for (i
= 1; i
<= 4; ++i
)
979 req
->data
[i
] = req
->data
[i
+1];
981 req
->reply
[0] = CUDA_PACKET
;
983 req
->reply
[2] = CUDA_SET_TIME
;
984 ret
= pmu_queue_request(req
);
991 for (i
= req
->nbytes
- 1; i
> 1; --i
)
992 req
->data
[i
+2] = req
->data
[i
];
993 req
->data
[3] = req
->nbytes
- 2;
994 req
->data
[2] = pmu_adb_flags
;
995 /*req->data[1] = req->data[1];*/
996 req
->data
[0] = PMU_ADB_CMD
;
998 req
->reply_expected
= 1;
1000 ret
= pmu_queue_request(req
);
1009 while (!req
->complete
)
1015 /* Enable/disable autopolling */
1017 pmu_adb_autopoll(int devs
)
1019 struct adb_request req
;
1021 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1026 pmu_request(&req
, NULL
, 5, PMU_ADB_CMD
, 0, 0x86,
1027 adb_dev_map
>> 8, adb_dev_map
);
1030 pmu_request(&req
, NULL
, 1, PMU_ADB_POLL_OFF
);
1033 while (!req
.complete
)
1038 /* Reset the ADB bus */
1040 pmu_adb_reset_bus(void)
1042 struct adb_request req
;
1043 int save_autopoll
= adb_dev_map
;
1045 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1048 /* anyone got a better idea?? */
1049 pmu_adb_autopoll(0);
1053 req
.data
[0] = PMU_ADB_CMD
;
1055 req
.data
[2] = ADB_BUSRESET
;
1059 req
.reply_expected
= 1;
1060 if (pmu_queue_request(&req
) != 0) {
1061 printk(KERN_ERR
"pmu_adb_reset_bus: pmu_queue_request failed\n");
1064 pmu_wait_complete(&req
);
1066 if (save_autopoll
!= 0)
1067 pmu_adb_autopoll(save_autopoll
);
1071 #endif /* CONFIG_ADB */
1073 /* Construct and send a pmu request */
1075 pmu_request(struct adb_request
*req
, void (*done
)(struct adb_request
*),
1084 if (nbytes
< 0 || nbytes
> 32) {
1085 printk(KERN_ERR
"pmu_request: bad nbytes (%d)\n", nbytes
);
1089 req
->nbytes
= nbytes
;
1091 va_start(list
, nbytes
);
1092 for (i
= 0; i
< nbytes
; ++i
)
1093 req
->data
[i
] = va_arg(list
, int);
1096 req
->reply_expected
= 0;
1097 return pmu_queue_request(req
);
1101 pmu_queue_request(struct adb_request
*req
)
1103 unsigned long flags
;
1110 if (req
->nbytes
<= 0) {
1114 nsend
= pmu_data_len
[req
->data
[0]][0];
1115 if (nsend
>= 0 && req
->nbytes
!= nsend
+ 1) {
1124 spin_lock_irqsave(&pmu_lock
, flags
);
1125 if (current_req
!= 0) {
1126 last_req
->next
= req
;
1131 if (pmu_state
== idle
)
1134 spin_unlock_irqrestore(&pmu_lock
, flags
);
1142 /* Sightly increased the delay, I had one occurrence of the message
1146 while ((in_8(&via
[B
]) & TACK
) == 0) {
1147 if (--timeout
< 0) {
1148 printk(KERN_ERR
"PMU not responding (!ack)\n");
1155 /* New PMU seems to be very sensitive to those timings, so we make sure
1156 * PCI is flushed immediately */
1160 volatile unsigned char __iomem
*v
= via
;
1162 out_8(&v
[ACR
], in_8(&v
[ACR
]) | SR_OUT
| SR_EXT
);
1164 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
); /* assert TREQ */
1171 volatile unsigned char __iomem
*v
= via
;
1173 out_8(&v
[ACR
], (in_8(&v
[ACR
]) & ~SR_OUT
) | SR_EXT
);
1174 in_8(&v
[SR
]); /* resets SR */
1175 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
);
1180 pmu_done(struct adb_request
*req
)
1182 void (*done
)(struct adb_request
*) = req
->done
;
1185 /* Here, we assume that if the request has a done member, the
1186 * struct request will survive to setting req->complete to 1
1195 struct adb_request
*req
;
1197 /* assert pmu_state == idle */
1198 /* get the packet to send */
1200 if (req
== 0 || pmu_state
!= idle
1201 || (/*req->reply_expected && */req_awaiting_reply
))
1204 pmu_state
= sending
;
1206 data_len
= pmu_data_len
[req
->data
[0]][0];
1208 /* Sounds safer to make sure ACK is high before writing. This helped
1209 * kill a problem with ADB and some iBooks
1212 /* set the shift register to shift out and send a byte */
1213 send_byte(req
->data
[0]);
1223 via_pmu_interrupt(0, NULL
);
1233 /* Kicks ADB read when PMU is suspended */
1234 adb_int_pending
= 1;
1236 via_pmu_interrupt(0, NULL
);
1237 } while (pmu_suspended
&& (adb_int_pending
|| pmu_state
!= idle
1238 || req_awaiting_reply
));
1242 pmu_wait_complete(struct adb_request
*req
)
1246 while((pmu_state
!= idle
&& pmu_state
!= locked
) || !req
->complete
)
1247 via_pmu_interrupt(0, NULL
);
1250 /* This function loops until the PMU is idle and prevents it from
1251 * anwsering to ADB interrupts. pmu_request can still be called.
1252 * This is done to avoid spurrious shutdowns when we know we'll have
1253 * interrupts switched off for a long time
1258 unsigned long flags
;
1259 #ifdef SUSPEND_USES_PMU
1260 struct adb_request
*req
;
1265 spin_lock_irqsave(&pmu_lock
, flags
);
1267 if (pmu_suspended
> 1) {
1268 spin_unlock_irqrestore(&pmu_lock
, flags
);
1273 spin_unlock_irqrestore(&pmu_lock
, flags
);
1274 if (req_awaiting_reply
)
1275 adb_int_pending
= 1;
1276 via_pmu_interrupt(0, NULL
);
1277 spin_lock_irqsave(&pmu_lock
, flags
);
1278 if (!adb_int_pending
&& pmu_state
== idle
&& !req_awaiting_reply
) {
1279 #ifdef SUSPEND_USES_PMU
1280 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
1281 spin_unlock_irqrestore(&pmu_lock
, flags
);
1282 while(!req
.complete
)
1284 #else /* SUSPEND_USES_PMU */
1286 disable_irq_nosync(gpio_irq
);
1287 out_8(&via
[IER
], CB1_INT
| IER_CLR
);
1288 spin_unlock_irqrestore(&pmu_lock
, flags
);
1289 #endif /* SUSPEND_USES_PMU */
1298 unsigned long flags
;
1300 if (!via
|| (pmu_suspended
< 1))
1303 spin_lock_irqsave(&pmu_lock
, flags
);
1305 if (pmu_suspended
> 0) {
1306 spin_unlock_irqrestore(&pmu_lock
, flags
);
1309 adb_int_pending
= 1;
1310 #ifdef SUSPEND_USES_PMU
1311 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
1312 spin_unlock_irqrestore(&pmu_lock
, flags
);
1313 while(!req
.complete
)
1315 #else /* SUSPEND_USES_PMU */
1317 enable_irq(gpio_irq
);
1318 out_8(&via
[IER
], CB1_INT
| IER_SET
);
1319 spin_unlock_irqrestore(&pmu_lock
, flags
);
1321 #endif /* SUSPEND_USES_PMU */
1324 /* Interrupt data could be the result data from an ADB cmd */
1326 pmu_handle_data(unsigned char *data
, int len
)
1328 unsigned char ints
, pirq
;
1332 if (drop_interrupts
|| len
< 1) {
1333 adb_int_pending
= 0;
1338 /* Get PMU interrupt mask */
1341 /* Record zero interrupts for stats */
1345 /* Hack to deal with ADB autopoll flag */
1346 if (ints
& PMU_INT_ADB
)
1347 ints
&= ~(PMU_INT_ADB_AUTO
| PMU_INT_AUTO_SRQ_POLL
);
1352 if (i
> pmu_irq_stats
[10])
1353 pmu_irq_stats
[10] = i
;
1357 for (pirq
= 0; pirq
< 8; pirq
++)
1358 if (ints
& (1 << pirq
))
1360 pmu_irq_stats
[pirq
]++;
1362 ints
&= ~(1 << pirq
);
1364 /* Note: for some reason, we get an interrupt with len=1,
1365 * data[0]==0 after each normal ADB interrupt, at least
1366 * on the Pismo. Still investigating... --BenH
1368 if ((1 << pirq
) & PMU_INT_ADB
) {
1369 if ((data
[0] & PMU_INT_ADB_AUTO
) == 0) {
1370 struct adb_request
*req
= req_awaiting_reply
;
1372 printk(KERN_ERR
"PMU: extra ADB reply\n");
1375 req_awaiting_reply
= NULL
;
1379 memcpy(req
->reply
, data
+ 1, len
- 1);
1380 req
->reply_len
= len
- 1;
1384 if (len
== 4 && data
[1] == 0x2c) {
1385 extern int xmon_wants_key
, xmon_adb_keycode
;
1386 if (xmon_wants_key
) {
1387 xmon_adb_keycode
= data
[2];
1393 * XXX On the [23]400 the PMU gives us an up
1394 * event for keycodes 0x74 or 0x75 when the PC
1395 * card eject buttons are released, so we
1396 * ignore those events.
1398 if (!(pmu_kind
== PMU_OHARE_BASED
&& len
== 4
1399 && data
[1] == 0x2c && data
[3] == 0xff
1400 && (data
[2] & ~1) == 0xf4))
1401 adb_input(data
+1, len
-1, 1);
1402 #endif /* CONFIG_ADB */
1405 /* Sound/brightness button pressed */
1406 else if ((1 << pirq
) & PMU_INT_SNDBRT
) {
1407 #ifdef CONFIG_PMAC_BACKLIGHT
1409 pmac_backlight_set_legacy_brightness_pmu(data
[1] >> 4);
1412 /* Tick interrupt */
1413 else if ((1 << pirq
) & PMU_INT_TICK
) {
1414 /* Environement or tick interrupt, query batteries */
1415 if (pmu_battery_count
) {
1416 if ((--query_batt_timer
) == 0) {
1417 query_battery_state();
1418 query_batt_timer
= BATTERY_POLLING_COUNT
;
1422 else if ((1 << pirq
) & PMU_INT_ENVIRONMENT
) {
1423 if (pmu_battery_count
)
1424 query_battery_state();
1425 pmu_pass_intr(data
, len
);
1426 /* len == 6 is probably a bad check. But how do I
1427 * know what PMU versions send what events here? */
1429 via_pmu_event(PMU_EVT_POWER
, !!(data
[1]&8));
1430 via_pmu_event(PMU_EVT_LID
, data
[1]&1);
1433 pmu_pass_intr(data
, len
);
1438 static struct adb_request
*
1441 struct adb_request
*req
;
1444 if (via
[B
] & TREQ
) {
1445 printk(KERN_ERR
"PMU: spurious SR intr (%x)\n", via
[B
]);
1446 out_8(&via
[IFR
], SR_INT
);
1449 /* The ack may not yet be low when we get the interrupt */
1450 while ((in_8(&via
[B
]) & TACK
) != 0)
1453 /* if reading grab the byte, and reset the interrupt */
1454 if (pmu_state
== reading
|| pmu_state
== reading_intr
)
1455 bite
= in_8(&via
[SR
]);
1457 /* reset TREQ and wait for TACK to go high */
1458 out_8(&via
[B
], in_8(&via
[B
]) | TREQ
);
1461 switch (pmu_state
) {
1465 data_len
= req
->nbytes
- 1;
1466 send_byte(data_len
);
1469 if (data_index
<= data_len
) {
1470 send_byte(req
->data
[data_index
++]);
1474 data_len
= pmu_data_len
[req
->data
[0]][1];
1475 if (data_len
== 0) {
1477 current_req
= req
->next
;
1478 if (req
->reply_expected
)
1479 req_awaiting_reply
= req
;
1483 pmu_state
= reading
;
1485 reply_ptr
= req
->reply
+ req
->reply_len
;
1493 pmu_state
= reading_intr
;
1494 reply_ptr
= interrupt_data
[int_data_last
];
1496 if (gpio_irq
>= 0 && !gpio_irq_enabled
) {
1497 enable_irq(gpio_irq
);
1498 gpio_irq_enabled
= 1;
1504 if (data_len
== -1) {
1507 printk(KERN_ERR
"PMU: bad reply len %d\n", bite
);
1508 } else if (data_index
< 32) {
1509 reply_ptr
[data_index
++] = bite
;
1511 if (data_index
< data_len
) {
1516 if (pmu_state
== reading_intr
) {
1518 int_data_state
[int_data_last
] = int_data_ready
;
1519 interrupt_data_len
[int_data_last
] = data_len
;
1523 * For PMU sleep and freq change requests, we lock the
1524 * PMU until it's explicitly unlocked. This avoids any
1525 * spurrious event polling getting in
1527 current_req
= req
->next
;
1528 req
->reply_len
+= data_index
;
1529 if (req
->data
[0] == PMU_SLEEP
|| req
->data
[0] == PMU_CPU_SPEED
)
1538 printk(KERN_ERR
"via_pmu_interrupt: unknown state %d?\n",
1545 via_pmu_interrupt(int irq
, void *arg
)
1547 unsigned long flags
;
1551 struct adb_request
*req
= NULL
;
1554 /* This is a bit brutal, we can probably do better */
1555 spin_lock_irqsave(&pmu_lock
, flags
);
1559 intr
= in_8(&via
[IFR
]) & (SR_INT
| CB1_INT
);
1563 if (++nloop
> 1000) {
1564 printk(KERN_DEBUG
"PMU: stuck in intr loop, "
1565 "intr=%x, ier=%x pmu_state=%d\n",
1566 intr
, in_8(&via
[IER
]), pmu_state
);
1569 out_8(&via
[IFR
], intr
);
1570 if (intr
& CB1_INT
) {
1571 adb_int_pending
= 1;
1574 if (intr
& SR_INT
) {
1575 req
= pmu_sr_intr();
1582 if (pmu_state
== idle
) {
1583 if (adb_int_pending
) {
1584 if (int_data_state
[0] == int_data_empty
)
1586 else if (int_data_state
[1] == int_data_empty
)
1591 int_data_state
[int_data_last
] = int_data_fill
;
1592 /* Sounds safer to make sure ACK is high before writing.
1593 * This helped kill a problem with ADB and some iBooks
1596 send_byte(PMU_INT_ACK
);
1597 adb_int_pending
= 0;
1598 } else if (current_req
)
1602 /* Mark the oldest buffer for flushing */
1603 if (int_data_state
[!int_data_last
] == int_data_ready
) {
1604 int_data_state
[!int_data_last
] = int_data_flush
;
1605 int_data
= !int_data_last
;
1606 } else if (int_data_state
[int_data_last
] == int_data_ready
) {
1607 int_data_state
[int_data_last
] = int_data_flush
;
1608 int_data
= int_data_last
;
1611 spin_unlock_irqrestore(&pmu_lock
, flags
);
1613 /* Deal with completed PMU requests outside of the lock */
1619 /* Deal with interrupt datas outside of the lock */
1620 if (int_data
>= 0) {
1621 pmu_handle_data(interrupt_data
[int_data
], interrupt_data_len
[int_data
]);
1622 spin_lock_irqsave(&pmu_lock
, flags
);
1624 int_data_state
[int_data
] = int_data_empty
;
1629 return IRQ_RETVAL(handled
);
1635 unsigned long flags
;
1637 spin_lock_irqsave(&pmu_lock
, flags
);
1638 if (pmu_state
== locked
)
1640 adb_int_pending
= 1;
1641 spin_unlock_irqrestore(&pmu_lock
, flags
);
1646 gpio1_interrupt(int irq
, void *arg
)
1648 unsigned long flags
;
1650 if ((in_8(gpio_reg
+ 0x9) & 0x02) == 0) {
1651 spin_lock_irqsave(&pmu_lock
, flags
);
1652 if (gpio_irq_enabled
> 0) {
1653 disable_irq_nosync(gpio_irq
);
1654 gpio_irq_enabled
= 0;
1657 adb_int_pending
= 1;
1658 spin_unlock_irqrestore(&pmu_lock
, flags
);
1659 via_pmu_interrupt(0, NULL
);
1666 pmu_enable_irled(int on
)
1668 struct adb_request req
;
1672 if (pmu_kind
== PMU_KEYLARGO_BASED
)
1675 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
, PMU_POW_IRLED
|
1676 (on
? PMU_POW_ON
: PMU_POW_OFF
));
1677 pmu_wait_complete(&req
);
1683 struct adb_request req
;
1688 local_irq_disable();
1690 drop_interrupts
= 1;
1692 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1693 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1695 while(!req
.complete
)
1699 pmu_request(&req
, NULL
, 1, PMU_RESET
);
1700 pmu_wait_complete(&req
);
1708 struct adb_request req
;
1713 local_irq_disable();
1715 drop_interrupts
= 1;
1717 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1718 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1720 pmu_wait_complete(&req
);
1722 /* Disable server mode on shutdown or we'll just
1725 pmu_set_server_mode(0);
1728 pmu_request(&req
, NULL
, 5, PMU_SHUTDOWN
,
1729 'M', 'A', 'T', 'T');
1730 pmu_wait_complete(&req
);
1741 #ifdef CONFIG_PM_SLEEP
1743 static LIST_HEAD(sleep_notifiers
);
1746 pmu_register_sleep_notifier(struct pmu_sleep_notifier
*n
)
1748 struct list_head
*list
;
1749 struct pmu_sleep_notifier
*notifier
;
1751 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
1752 list
= list
->next
) {
1753 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1754 if (n
->priority
> notifier
->priority
)
1757 __list_add(&n
->list
, list
->prev
, list
);
1760 EXPORT_SYMBOL(pmu_register_sleep_notifier
);
1763 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier
* n
)
1765 if (n
->list
.next
== 0)
1768 n
->list
.next
= NULL
;
1771 EXPORT_SYMBOL(pmu_unregister_sleep_notifier
);
1772 #endif /* CONFIG_PM_SLEEP */
1774 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
1776 /* Sleep is broadcast last-to-first */
1777 static void broadcast_sleep(int when
)
1779 struct list_head
*list
;
1780 struct pmu_sleep_notifier
*notifier
;
1782 for (list
= sleep_notifiers
.prev
; list
!= &sleep_notifiers
;
1783 list
= list
->prev
) {
1784 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1785 notifier
->notifier_call(notifier
, when
);
1789 /* Wake is broadcast first-to-last */
1790 static void broadcast_wake(void)
1792 struct list_head
*list
;
1793 struct pmu_sleep_notifier
*notifier
;
1795 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
1796 list
= list
->next
) {
1797 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1798 notifier
->notifier_call(notifier
, PBOOK_WAKE
);
1803 * This struct is used to store config register values for
1804 * PCI devices which may get powered off when we sleep.
1806 static struct pci_save
{
1807 #ifndef HACKED_PCI_SAVE
1816 static int pbook_npci_saves
;
1819 pbook_alloc_pci_save(void)
1822 struct pci_dev
*pd
= NULL
;
1825 while ((pd
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1830 pbook_pci_saves
= (struct pci_save
*)
1831 kmalloc(npci
* sizeof(struct pci_save
), GFP_KERNEL
);
1832 pbook_npci_saves
= npci
;
1836 pbook_free_pci_save(void)
1838 if (pbook_pci_saves
== NULL
)
1840 kfree(pbook_pci_saves
);
1841 pbook_pci_saves
= NULL
;
1842 pbook_npci_saves
= 0;
1846 pbook_pci_save(void)
1848 struct pci_save
*ps
= pbook_pci_saves
;
1849 struct pci_dev
*pd
= NULL
;
1850 int npci
= pbook_npci_saves
;
1855 while ((pd
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1860 #ifndef HACKED_PCI_SAVE
1861 pci_read_config_word(pd
, PCI_COMMAND
, &ps
->command
);
1862 pci_read_config_word(pd
, PCI_CACHE_LINE_SIZE
, &ps
->cache_lat
);
1863 pci_read_config_word(pd
, PCI_INTERRUPT_LINE
, &ps
->intr
);
1864 pci_read_config_dword(pd
, PCI_ROM_ADDRESS
, &ps
->rom_address
);
1868 pci_read_config_dword(pd
, i
<<4, &ps
->config
[i
]);
1874 /* For this to work, we must take care of a few things: If gmac was enabled
1875 * during boot, it will be in the pci dev list. If it's disabled at this point
1876 * (and it will probably be), then you can't access it's config space.
1879 pbook_pci_restore(void)
1882 struct pci_save
*ps
= pbook_pci_saves
- 1;
1883 struct pci_dev
*pd
= NULL
;
1884 int npci
= pbook_npci_saves
;
1887 while ((pd
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1888 #ifdef HACKED_PCI_SAVE
1896 pci_write_config_dword(pd
, i
<<4, ps
->config
[i
]);
1897 pci_write_config_dword(pd
, 4, ps
->config
[1]);
1902 if (ps
->command
== 0)
1904 pci_read_config_word(pd
, PCI_COMMAND
, &cmd
);
1905 if ((ps
->command
& ~cmd
) == 0)
1907 switch (pd
->hdr_type
) {
1908 case PCI_HEADER_TYPE_NORMAL
:
1909 for (j
= 0; j
< 6; ++j
)
1910 pci_write_config_dword(pd
,
1911 PCI_BASE_ADDRESS_0
+ j
*4,
1912 pd
->resource
[j
].start
);
1913 pci_write_config_dword(pd
, PCI_ROM_ADDRESS
,
1915 pci_write_config_word(pd
, PCI_CACHE_LINE_SIZE
,
1917 pci_write_config_word(pd
, PCI_INTERRUPT_LINE
,
1919 pci_write_config_word(pd
, PCI_COMMAND
, ps
->command
);
1927 /* N.B. This doesn't work on the 3400 */
1931 struct adb_request req
;
1933 memset(&req
, 0, sizeof(req
));
1935 for (; n
> 0; --n
) {
1942 req
.reply
[0] = ADB_RET_OK
;
1944 req
.reply_expected
= 0;
1945 pmu_polled_request(&req
);
1953 req
.reply
[0] = ADB_RET_OK
;
1955 req
.reply_expected
= 0;
1956 pmu_polled_request(&req
);
1964 * Put the powerbook to sleep.
1967 static u32 save_via
[8];
1970 save_via_state(void)
1972 save_via
[0] = in_8(&via
[ANH
]);
1973 save_via
[1] = in_8(&via
[DIRA
]);
1974 save_via
[2] = in_8(&via
[B
]);
1975 save_via
[3] = in_8(&via
[DIRB
]);
1976 save_via
[4] = in_8(&via
[PCR
]);
1977 save_via
[5] = in_8(&via
[ACR
]);
1978 save_via
[6] = in_8(&via
[T1CL
]);
1979 save_via
[7] = in_8(&via
[T1CH
]);
1982 restore_via_state(void)
1984 out_8(&via
[ANH
], save_via
[0]);
1985 out_8(&via
[DIRA
], save_via
[1]);
1986 out_8(&via
[B
], save_via
[2]);
1987 out_8(&via
[DIRB
], save_via
[3]);
1988 out_8(&via
[PCR
], save_via
[4]);
1989 out_8(&via
[ACR
], save_via
[5]);
1990 out_8(&via
[T1CL
], save_via
[6]);
1991 out_8(&via
[T1CH
], save_via
[7]);
1992 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
1993 out_8(&via
[IFR
], 0x7f); /* clear IFR */
1994 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
1997 extern void pmu_backlight_set_sleep(int sleep
);
2000 pmac_suspend_devices(void)
2004 pm_prepare_console();
2006 /* Notify old-style device drivers */
2007 broadcast_sleep(PBOOK_SLEEP_REQUEST
);
2009 /* Sync the disks. */
2010 /* XXX It would be nice to have some way to ensure that
2011 * nobody is dirtying any new buffers while we wait. That
2012 * could be achieved using the refrigerator for processes
2017 broadcast_sleep(PBOOK_SLEEP_NOW
);
2019 /* Send suspend call to devices, hold the device core's dpm_sem */
2020 ret
= device_suspend(PMSG_SUSPEND
);
2023 printk(KERN_ERR
"Driver sleep failed\n");
2027 #ifdef CONFIG_PMAC_BACKLIGHT
2028 /* Tell backlight code not to muck around with the chip anymore */
2029 pmu_backlight_set_sleep(1);
2032 /* Call platform functions marked "on sleep" */
2033 pmac_pfunc_i2c_suspend();
2034 pmac_pfunc_base_suspend();
2036 /* Stop preemption */
2039 /* Make sure the decrementer won't interrupt us */
2040 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2041 /* Make sure any pending DEC interrupt occurring while we did
2042 * the above didn't re-enable the DEC */
2044 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2046 /* We can now disable MSR_EE. This code of course works properly only
2047 * on UP machines... For SMP, if we ever implement sleep, we'll have to
2048 * stop the "other" CPUs way before we do all that stuff.
2050 local_irq_disable();
2052 /* Broadcast power down irq
2053 * This isn't that useful in most cases (only directly wired devices can
2054 * use this but still... This will take care of sysdev's as well, so
2055 * we exit from here with local irqs disabled and PIC off.
2057 ret
= device_power_down(PMSG_SUSPEND
);
2059 wakeup_decrementer();
2064 printk(KERN_ERR
"Driver powerdown failed\n");
2068 /* Wait for completion of async requests */
2069 while (!batt_req
.complete
)
2072 /* Giveup the lazy FPU & vec so we don't have to back them
2073 * up from the low level code
2077 #ifdef CONFIG_ALTIVEC
2078 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
2079 enable_kernel_altivec();
2080 #endif /* CONFIG_ALTIVEC */
2086 pmac_wakeup_devices(void)
2090 #ifdef CONFIG_PMAC_BACKLIGHT
2091 /* Tell backlight code it can use the chip again */
2092 pmu_backlight_set_sleep(0);
2095 /* Power back up system devices (including the PIC) */
2098 /* Force a poll of ADB interrupts */
2099 adb_int_pending
= 1;
2100 via_pmu_interrupt(0, NULL
);
2102 /* Restart jiffies & scheduling */
2103 wakeup_decrementer();
2105 /* Re-enable local CPU interrupts */
2110 /* Call platform functions marked "on wake" */
2111 pmac_pfunc_base_resume();
2112 pmac_pfunc_i2c_resume();
2114 /* Resume devices */
2117 /* Notify old style drivers */
2120 pm_restore_console();
2125 #define GRACKLE_PM (1<<7)
2126 #define GRACKLE_DOZE (1<<5)
2127 #define GRACKLE_NAP (1<<4)
2128 #define GRACKLE_SLEEP (1<<3)
2130 static int powerbook_sleep_grackle(void)
2132 unsigned long save_l2cr
;
2133 unsigned short pmcr1
;
2134 struct adb_request req
;
2136 struct pci_dev
*grackle
;
2138 grackle
= pci_get_bus_and_slot(0, 0);
2142 ret
= pmac_suspend_devices();
2144 printk(KERN_ERR
"Sleep rejected by devices\n");
2148 /* Turn off various things. Darwin does some retry tests here... */
2149 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
, PMU_POW0_OFF
|PMU_POW0_HARD_DRIVE
);
2150 pmu_wait_complete(&req
);
2151 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2152 PMU_POW_OFF
|PMU_POW_BACKLIGHT
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2153 pmu_wait_complete(&req
);
2155 /* For 750, save backside cache setting and disable it */
2156 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2158 if (!__fake_sleep
) {
2159 /* Ask the PMU to put us to sleep */
2160 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2161 pmu_wait_complete(&req
);
2164 /* The VIA is supposed not to be restored correctly*/
2166 /* We shut down some HW */
2167 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2169 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2170 /* Apparently, MacOS uses NAP mode for Grackle ??? */
2171 pmcr1
&= ~(GRACKLE_DOZE
|GRACKLE_SLEEP
);
2172 pmcr1
|= GRACKLE_PM
|GRACKLE_NAP
;
2173 pci_write_config_word(grackle
, 0x70, pmcr1
);
2175 /* Call low-level ASM sleep handler */
2179 low_sleep_handler();
2181 /* We're awake again, stop grackle PM */
2182 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2183 pmcr1
&= ~(GRACKLE_PM
|GRACKLE_DOZE
|GRACKLE_SLEEP
|GRACKLE_NAP
);
2184 pci_write_config_word(grackle
, 0x70, pmcr1
);
2186 pci_dev_put(grackle
);
2188 /* Make sure the PMU is idle */
2189 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2190 restore_via_state();
2192 /* Restore L2 cache */
2193 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2194 _set_L2CR(save_l2cr
);
2196 /* Restore userland MMU context */
2197 set_context(current
->active_mm
->context
.id
, current
->active_mm
->pgd
);
2199 /* Power things up */
2201 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2202 pmu_wait_complete(&req
);
2203 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
,
2204 PMU_POW0_ON
|PMU_POW0_HARD_DRIVE
);
2205 pmu_wait_complete(&req
);
2206 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2207 PMU_POW_ON
|PMU_POW_BACKLIGHT
|PMU_POW_CHARGER
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2208 pmu_wait_complete(&req
);
2210 pmac_wakeup_devices();
2216 powerbook_sleep_Core99(void)
2218 unsigned long save_l2cr
;
2219 unsigned long save_l3cr
;
2220 struct adb_request req
;
2223 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0) {
2224 printk(KERN_ERR
"Sleep mode not supported on this machine\n");
2228 if (num_online_cpus() > 1 || cpu_is_offline(0))
2231 ret
= pmac_suspend_devices();
2233 printk(KERN_ERR
"Sleep rejected by devices\n");
2237 /* Stop environment and ADB interrupts */
2238 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
2239 pmu_wait_complete(&req
);
2241 /* Tell PMU what events will wake us up */
2242 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_CLR_WAKEUP_EVENTS
,
2244 pmu_wait_complete(&req
);
2245 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_SET_WAKEUP_EVENTS
,
2246 0, PMU_PWR_WAKEUP_KEY
|
2247 (option_lid_wakeup
? PMU_PWR_WAKEUP_LID_OPEN
: 0));
2248 pmu_wait_complete(&req
);
2250 /* Save the state of the L2 and L3 caches */
2251 save_l3cr
= _get_L3CR(); /* (returns -1 if not available) */
2252 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2254 if (!__fake_sleep
) {
2255 /* Ask the PMU to put us to sleep */
2256 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2257 pmu_wait_complete(&req
);
2260 /* The VIA is supposed not to be restored correctly*/
2263 /* Shut down various ASICs. There's a chance that we can no longer
2264 * talk to the PMU after this, so I moved it to _after_ sending the
2265 * sleep command to it. Still need to be checked.
2267 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 1);
2269 /* Call low-level ASM sleep handler */
2273 low_sleep_handler();
2275 /* Restore Apple core ASICs state */
2276 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 0);
2279 restore_via_state();
2281 /* tweak LPJ before cpufreq is there */
2282 loops_per_jiffy
*= 2;
2285 pmac_call_early_video_resume();
2287 /* Restore L2 cache */
2288 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2289 _set_L2CR(save_l2cr
);
2290 /* Restore L3 cache */
2291 if (save_l3cr
!= 0xffffffff && (save_l3cr
& L3CR_L3E
) != 0)
2292 _set_L3CR(save_l3cr
);
2294 /* Restore userland MMU context */
2295 set_context(current
->active_mm
->context
.id
, current
->active_mm
->pgd
);
2297 /* Tell PMU we are ready */
2299 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2300 pmu_wait_complete(&req
);
2301 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2302 pmu_wait_complete(&req
);
2304 /* Restore LPJ, cpufreq will adjust the cpu frequency */
2305 loops_per_jiffy
/= 2;
2307 pmac_wakeup_devices();
2312 #define PB3400_MEM_CTRL 0xf8000000
2313 #define PB3400_MEM_CTRL_SLEEP 0x70
2316 powerbook_sleep_3400(void)
2321 struct adb_request sleep_req
;
2322 void __iomem
*mem_ctrl
;
2323 unsigned int __iomem
*mem_ctrl_sleep
;
2325 /* first map in the memory controller registers */
2326 mem_ctrl
= ioremap(PB3400_MEM_CTRL
, 0x100);
2327 if (mem_ctrl
== NULL
) {
2328 printk("powerbook_sleep_3400: ioremap failed\n");
2331 mem_ctrl_sleep
= mem_ctrl
+ PB3400_MEM_CTRL_SLEEP
;
2333 /* Allocate room for PCI save */
2334 pbook_alloc_pci_save();
2336 ret
= pmac_suspend_devices();
2338 pbook_free_pci_save();
2339 printk(KERN_ERR
"Sleep rejected by devices\n");
2343 /* Save the state of PCI config space for some slots */
2346 /* Set the memory controller to keep the memory refreshed
2347 while we're asleep */
2348 for (i
= 0x403f; i
>= 0x4000; --i
) {
2349 out_be32(mem_ctrl_sleep
, i
);
2351 x
= (in_be32(mem_ctrl_sleep
) >> 16) & 0x3ff;
2357 /* Ask the PMU to put us to sleep */
2358 pmu_request(&sleep_req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2359 while (!sleep_req
.complete
)
2362 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2364 /* displacement-flush the L2 cache - necessary? */
2365 for (p
= KERNELBASE
; p
< KERNELBASE
+ 0x100000; p
+= 0x1000)
2366 i
= *(volatile int *)p
;
2369 /* Put the CPU into sleep mode */
2370 hid0
= mfspr(SPRN_HID0
);
2371 hid0
= (hid0
& ~(HID0_NAP
| HID0_DOZE
)) | HID0_SLEEP
;
2372 mtspr(SPRN_HID0
, hid0
);
2373 mtmsr(mfmsr() | MSR_POW
| MSR_EE
);
2376 /* OK, we're awake again, start restoring things */
2377 out_be32(mem_ctrl_sleep
, 0x3f);
2378 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2379 pbook_pci_restore();
2382 /* wait for the PMU interrupt sequence to complete */
2386 pmac_wakeup_devices();
2387 pbook_free_pci_save();
2393 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2396 * Support for /dev/pmu device
2398 #define RB_SIZE 0x10
2399 struct pmu_private
{
2400 struct list_head list
;
2405 unsigned char data
[16];
2407 wait_queue_head_t wait
;
2409 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2410 int backlight_locker
;
2414 static LIST_HEAD(all_pmu_pvt
);
2415 static DEFINE_SPINLOCK(all_pvt_lock
);
2418 pmu_pass_intr(unsigned char *data
, int len
)
2420 struct pmu_private
*pp
;
2421 struct list_head
*list
;
2423 unsigned long flags
;
2425 if (len
> sizeof(pp
->rb_buf
[0].data
))
2426 len
= sizeof(pp
->rb_buf
[0].data
);
2427 spin_lock_irqsave(&all_pvt_lock
, flags
);
2428 for (list
= &all_pmu_pvt
; (list
= list
->next
) != &all_pmu_pvt
; ) {
2429 pp
= list_entry(list
, struct pmu_private
, list
);
2430 spin_lock(&pp
->lock
);
2434 if (i
!= pp
->rb_get
) {
2435 struct rb_entry
*rp
= &pp
->rb_buf
[pp
->rb_put
];
2437 memcpy(rp
->data
, data
, len
);
2439 wake_up_interruptible(&pp
->wait
);
2441 spin_unlock(&pp
->lock
);
2443 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2447 pmu_open(struct inode
*inode
, struct file
*file
)
2449 struct pmu_private
*pp
;
2450 unsigned long flags
;
2452 pp
= kmalloc(sizeof(struct pmu_private
), GFP_KERNEL
);
2455 pp
->rb_get
= pp
->rb_put
= 0;
2456 spin_lock_init(&pp
->lock
);
2457 init_waitqueue_head(&pp
->wait
);
2458 spin_lock_irqsave(&all_pvt_lock
, flags
);
2459 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2460 pp
->backlight_locker
= 0;
2462 list_add(&pp
->list
, &all_pmu_pvt
);
2463 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2464 file
->private_data
= pp
;
2469 pmu_read(struct file
*file
, char __user
*buf
,
2470 size_t count
, loff_t
*ppos
)
2472 struct pmu_private
*pp
= file
->private_data
;
2473 DECLARE_WAITQUEUE(wait
, current
);
2474 unsigned long flags
;
2477 if (count
< 1 || pp
== 0)
2479 if (!access_ok(VERIFY_WRITE
, buf
, count
))
2482 spin_lock_irqsave(&pp
->lock
, flags
);
2483 add_wait_queue(&pp
->wait
, &wait
);
2484 current
->state
= TASK_INTERRUPTIBLE
;
2488 if (pp
->rb_get
!= pp
->rb_put
) {
2490 struct rb_entry
*rp
= &pp
->rb_buf
[i
];
2492 spin_unlock_irqrestore(&pp
->lock
, flags
);
2495 if (ret
> 0 && copy_to_user(buf
, rp
->data
, ret
))
2499 spin_lock_irqsave(&pp
->lock
, flags
);
2504 if (file
->f_flags
& O_NONBLOCK
)
2507 if (signal_pending(current
))
2509 spin_unlock_irqrestore(&pp
->lock
, flags
);
2511 spin_lock_irqsave(&pp
->lock
, flags
);
2513 current
->state
= TASK_RUNNING
;
2514 remove_wait_queue(&pp
->wait
, &wait
);
2515 spin_unlock_irqrestore(&pp
->lock
, flags
);
2521 pmu_write(struct file
*file
, const char __user
*buf
,
2522 size_t count
, loff_t
*ppos
)
2528 pmu_fpoll(struct file
*filp
, poll_table
*wait
)
2530 struct pmu_private
*pp
= filp
->private_data
;
2531 unsigned int mask
= 0;
2532 unsigned long flags
;
2536 poll_wait(filp
, &pp
->wait
, wait
);
2537 spin_lock_irqsave(&pp
->lock
, flags
);
2538 if (pp
->rb_get
!= pp
->rb_put
)
2540 spin_unlock_irqrestore(&pp
->lock
, flags
);
2545 pmu_release(struct inode
*inode
, struct file
*file
)
2547 struct pmu_private
*pp
= file
->private_data
;
2548 unsigned long flags
;
2552 file
->private_data
= NULL
;
2553 spin_lock_irqsave(&all_pvt_lock
, flags
);
2554 list_del(&pp
->list
);
2555 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2557 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2558 if (pp
->backlight_locker
)
2559 pmac_backlight_enable();
2569 pmu_ioctl(struct inode
* inode
, struct file
*filp
,
2570 u_int cmd
, u_long arg
)
2572 __u32 __user
*argp
= (__u32 __user
*)arg
;
2573 int error
= -EINVAL
;
2576 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2578 if (!capable(CAP_SYS_ADMIN
))
2580 if (sleep_in_progress
)
2582 sleep_in_progress
= 1;
2584 case PMU_OHARE_BASED
:
2585 error
= powerbook_sleep_3400();
2587 case PMU_HEATHROW_BASED
:
2588 case PMU_PADDINGTON_BASED
:
2589 error
= powerbook_sleep_grackle();
2591 case PMU_KEYLARGO_BASED
:
2592 error
= powerbook_sleep_Core99();
2597 sleep_in_progress
= 0;
2599 case PMU_IOC_CAN_SLEEP
:
2600 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0)
2601 return put_user(0, argp
);
2603 return put_user(1, argp
);
2604 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2606 #ifdef CONFIG_PMAC_BACKLIGHT_LEGACY
2607 /* Compatibility ioctl's for backlight */
2608 case PMU_IOC_GET_BACKLIGHT
:
2612 if (sleep_in_progress
)
2615 brightness
= pmac_backlight_get_legacy_brightness();
2619 return put_user(brightness
, argp
);
2622 case PMU_IOC_SET_BACKLIGHT
:
2626 if (sleep_in_progress
)
2629 error
= get_user(brightness
, argp
);
2633 return pmac_backlight_set_legacy_brightness(brightness
);
2635 #ifdef CONFIG_INPUT_ADBHID
2636 case PMU_IOC_GRAB_BACKLIGHT
: {
2637 struct pmu_private
*pp
= filp
->private_data
;
2639 if (pp
->backlight_locker
)
2642 pp
->backlight_locker
= 1;
2643 pmac_backlight_disable();
2647 #endif /* CONFIG_INPUT_ADBHID */
2648 #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */
2650 case PMU_IOC_GET_MODEL
:
2651 return put_user(pmu_kind
, argp
);
2652 case PMU_IOC_HAS_ADB
:
2653 return put_user(pmu_has_adb
, argp
);
2658 static const struct file_operations pmu_device_fops
= {
2664 .release
= pmu_release
,
2667 static struct miscdevice pmu_device
= {
2668 PMU_MINOR
, "pmu", &pmu_device_fops
2671 static int pmu_device_init(void)
2675 if (misc_register(&pmu_device
) < 0)
2676 printk(KERN_ERR
"via-pmu: cannot register misc device.\n");
2679 device_initcall(pmu_device_init
);
2684 polled_handshake(volatile unsigned char __iomem
*via
)
2686 via
[B
] &= ~TREQ
; eieio();
2687 while ((via
[B
] & TACK
) != 0)
2689 via
[B
] |= TREQ
; eieio();
2690 while ((via
[B
] & TACK
) == 0)
2695 polled_send_byte(volatile unsigned char __iomem
*via
, int x
)
2697 via
[ACR
] |= SR_OUT
| SR_EXT
; eieio();
2698 via
[SR
] = x
; eieio();
2699 polled_handshake(via
);
2703 polled_recv_byte(volatile unsigned char __iomem
*via
)
2707 via
[ACR
] = (via
[ACR
] & ~SR_OUT
) | SR_EXT
; eieio();
2708 x
= via
[SR
]; eieio();
2709 polled_handshake(via
);
2710 x
= via
[SR
]; eieio();
2715 pmu_polled_request(struct adb_request
*req
)
2717 unsigned long flags
;
2719 volatile unsigned char __iomem
*v
= via
;
2723 l
= pmu_data_len
[c
][0];
2724 if (l
>= 0 && req
->nbytes
!= l
+ 1)
2727 local_irq_save(flags
);
2728 while (pmu_state
!= idle
)
2731 while ((via
[B
] & TACK
) == 0)
2733 polled_send_byte(v
, c
);
2735 l
= req
->nbytes
- 1;
2736 polled_send_byte(v
, l
);
2738 for (i
= 1; i
<= l
; ++i
)
2739 polled_send_byte(v
, req
->data
[i
]);
2741 l
= pmu_data_len
[c
][1];
2743 l
= polled_recv_byte(v
);
2744 for (i
= 0; i
< l
; ++i
)
2745 req
->reply
[i
+ req
->reply_len
] = polled_recv_byte(v
);
2750 local_irq_restore(flags
);
2753 #endif /* DEBUG_SLEEP */
2756 /* FIXME: This is a temporary set of callbacks to enable us
2757 * to do suspend-to-disk.
2760 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2762 int pmu_sys_suspended
;
2764 static int pmu_sys_suspend(struct sys_device
*sysdev
, pm_message_t state
)
2766 if (state
.event
!= PM_EVENT_SUSPEND
|| pmu_sys_suspended
)
2769 /* Suspend PMU event interrupts */
2772 pmu_sys_suspended
= 1;
2776 static int pmu_sys_resume(struct sys_device
*sysdev
)
2778 struct adb_request req
;
2780 if (!pmu_sys_suspended
)
2783 /* Tell PMU we are ready */
2784 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2785 pmu_wait_complete(&req
);
2787 /* Resume PMU event interrupts */
2790 pmu_sys_suspended
= 0;
2795 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2797 static struct sysdev_class pmu_sysclass
= {
2798 set_kset_name("pmu"),
2801 static struct sys_device device_pmu
= {
2802 .cls
= &pmu_sysclass
,
2805 static struct sysdev_driver driver_pmu
= {
2806 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2807 .suspend
= &pmu_sys_suspend
,
2808 .resume
= &pmu_sys_resume
,
2809 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2812 static int __init
init_pmu_sysfs(void)
2816 rc
= sysdev_class_register(&pmu_sysclass
);
2818 printk(KERN_ERR
"Failed registering PMU sys class\n");
2821 rc
= sysdev_register(&device_pmu
);
2823 printk(KERN_ERR
"Failed registering PMU sys device\n");
2826 rc
= sysdev_driver_register(&pmu_sysclass
, &driver_pmu
);
2828 printk(KERN_ERR
"Failed registering PMU sys driver\n");
2834 subsys_initcall(init_pmu_sysfs
);
2836 EXPORT_SYMBOL(pmu_request
);
2837 EXPORT_SYMBOL(pmu_queue_request
);
2838 EXPORT_SYMBOL(pmu_poll
);
2839 EXPORT_SYMBOL(pmu_poll_adb
);
2840 EXPORT_SYMBOL(pmu_wait_complete
);
2841 EXPORT_SYMBOL(pmu_suspend
);
2842 EXPORT_SYMBOL(pmu_resume
);
2843 EXPORT_SYMBOL(pmu_unlock
);
2844 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2845 EXPORT_SYMBOL(pmu_enable_irled
);
2846 EXPORT_SYMBOL(pmu_battery_count
);
2847 EXPORT_SYMBOL(pmu_batteries
);
2848 EXPORT_SYMBOL(pmu_power_flags
);
2849 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */