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/module.h>
37 #include <linux/spinlock.h>
39 #include <linux/proc_fs.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_PM_SLEEP) && defined(CONFIG_PPC32)
153 static int option_lid_wakeup
= 1;
154 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
155 #if (defined(CONFIG_PM_SLEEP)&&defined(CONFIG_PPC32))||defined(CONFIG_PMAC_BACKLIGHT_LEGACY)
156 static int sleep_in_progress
;
158 static unsigned long async_req_locks
;
159 static unsigned int pmu_irq_stats
[11];
161 static struct proc_dir_entry
*proc_pmu_root
;
162 static struct proc_dir_entry
*proc_pmu_info
;
163 static struct proc_dir_entry
*proc_pmu_irqstats
;
164 static struct proc_dir_entry
*proc_pmu_options
;
165 static int option_server_mode
;
167 int pmu_battery_count
;
169 unsigned int pmu_power_flags
= PMU_PWR_AC_PRESENT
;
170 struct pmu_battery_info pmu_batteries
[PMU_MAX_BATTERIES
];
171 static int query_batt_timer
= BATTERY_POLLING_COUNT
;
172 static struct adb_request batt_req
;
173 static struct proc_dir_entry
*proc_pmu_batt
[PMU_MAX_BATTERIES
];
177 BLOCKING_NOTIFIER_HEAD(sleep_notifier_list
);
180 static int adb_dev_map
;
181 static int pmu_adb_flags
;
183 static int pmu_probe(void);
184 static int pmu_init(void);
185 static int pmu_send_request(struct adb_request
*req
, int sync
);
186 static int pmu_adb_autopoll(int devs
);
187 static int pmu_adb_reset_bus(void);
188 #endif /* CONFIG_ADB */
190 static int init_pmu(void);
191 static void pmu_start(void);
192 static irqreturn_t
via_pmu_interrupt(int irq
, void *arg
);
193 static irqreturn_t
gpio1_interrupt(int irq
, void *arg
);
194 static int proc_get_info(char *page
, char **start
, off_t off
,
195 int count
, int *eof
, void *data
);
196 static int proc_get_irqstats(char *page
, char **start
, off_t off
,
197 int count
, int *eof
, void *data
);
198 static void pmu_pass_intr(unsigned char *data
, int len
);
199 static int proc_get_batt(char *page
, char **start
, off_t off
,
200 int count
, int *eof
, void *data
);
201 static int proc_read_options(char *page
, char **start
, off_t off
,
202 int count
, int *eof
, void *data
);
203 static int proc_write_options(struct file
*file
, const char __user
*buffer
,
204 unsigned long count
, void *data
);
207 struct adb_driver via_pmu_driver
= {
216 #endif /* CONFIG_ADB */
218 extern void low_sleep_handler(void);
219 extern void enable_kernel_altivec(void);
220 extern void enable_kernel_fp(void);
223 int pmu_polled_request(struct adb_request
*req
);
224 int pmu_wink(struct adb_request
*req
);
228 * This table indicates for each PMU opcode:
229 * - the number of data bytes to be sent with the command, or -1
230 * if a length byte should be sent,
231 * - the number of response bytes which the PMU will return, or
232 * -1 if it will send a length byte.
234 static const s8 pmu_data_len
[256][2] = {
235 /* 0 1 2 3 4 5 6 7 */
236 /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
237 /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
238 /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
239 /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
240 /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
241 /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
242 /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
243 /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
244 /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
245 /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
246 /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
247 /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
248 /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
249 /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
250 /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
251 /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
252 /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
253 /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
254 /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
255 /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
256 /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
257 /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
258 /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
259 /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
260 /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
261 /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
262 /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
263 /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
264 /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
265 /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
266 /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
267 /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
270 static char *pbook_type
[] = {
272 "PowerBook 2400/3400/3500(G3)",
273 "PowerBook G3 Series",
278 int __init
find_via_pmu(void)
285 vias
= of_find_node_by_name(NULL
, "via-pmu");
289 reg
= of_get_property(vias
, "reg", NULL
);
291 printk(KERN_ERR
"via-pmu: No \"reg\" property !\n");
294 taddr
= of_translate_address(vias
, reg
);
295 if (taddr
== OF_BAD_ADDR
) {
296 printk(KERN_ERR
"via-pmu: Can't translate address !\n");
300 spin_lock_init(&pmu_lock
);
304 pmu_intr_mask
= PMU_INT_PCEJECT
|
309 if (vias
->parent
->name
&& ((strcmp(vias
->parent
->name
, "ohare") == 0)
310 || of_device_is_compatible(vias
->parent
, "ohare")))
311 pmu_kind
= PMU_OHARE_BASED
;
312 else if (of_device_is_compatible(vias
->parent
, "paddington"))
313 pmu_kind
= PMU_PADDINGTON_BASED
;
314 else if (of_device_is_compatible(vias
->parent
, "heathrow"))
315 pmu_kind
= PMU_HEATHROW_BASED
;
316 else if (of_device_is_compatible(vias
->parent
, "Keylargo")
317 || of_device_is_compatible(vias
->parent
, "K2-Keylargo")) {
318 struct device_node
*gpiop
;
319 struct device_node
*adbp
;
320 u64 gaddr
= OF_BAD_ADDR
;
322 pmu_kind
= PMU_KEYLARGO_BASED
;
323 adbp
= of_find_node_by_type(NULL
, "adb");
324 pmu_has_adb
= (adbp
!= NULL
);
326 pmu_intr_mask
= PMU_INT_PCEJECT
|
332 gpiop
= of_find_node_by_name(NULL
, "gpio");
334 reg
= of_get_property(gpiop
, "reg", NULL
);
336 gaddr
= of_translate_address(gpiop
, reg
);
337 if (gaddr
!= OF_BAD_ADDR
)
338 gpio_reg
= ioremap(gaddr
, 0x10);
340 if (gpio_reg
== NULL
) {
341 printk(KERN_ERR
"via-pmu: Can't find GPIO reg !\n");
345 pmu_kind
= PMU_UNKNOWN
;
347 via
= ioremap(taddr
, 0x2000);
349 printk(KERN_ERR
"via-pmu: Can't map address !\n");
353 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
354 out_8(&via
[IFR
], 0x7f); /* clear IFR */
363 printk(KERN_INFO
"PMU driver v%d initialized for %s, firmware: %02x\n",
364 PMU_DRIVER_VERSION
, pbook_type
[pmu_kind
], pmu_version
);
366 sys_ctrler
= SYS_CTRLER_PMU
;
379 static int pmu_probe(void)
381 return vias
== NULL
? -ENODEV
: 0;
384 static int __init
pmu_init(void)
390 #endif /* CONFIG_ADB */
393 * We can't wait until pmu_init gets called, that happens too late.
394 * It happens after IDE and SCSI initialization, which can take a few
395 * seconds, and by that time the PMU could have given up on us and
397 * Thus this is called with arch_initcall rather than device_initcall.
399 static int __init
via_pmu_start(void)
406 batt_req
.complete
= 1;
408 irq
= irq_of_parse_and_map(vias
, 0);
410 printk(KERN_ERR
"via-pmu: can't map interrupt\n");
413 if (request_irq(irq
, via_pmu_interrupt
, 0, "VIA-PMU", (void *)0)) {
414 printk(KERN_ERR
"via-pmu: can't request irq %d\n", irq
);
418 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
419 gpio_node
= of_find_node_by_name(NULL
, "extint-gpio1");
420 if (gpio_node
== NULL
)
421 gpio_node
= of_find_node_by_name(NULL
,
424 gpio_irq
= irq_of_parse_and_map(gpio_node
, 0);
426 if (gpio_irq
!= NO_IRQ
) {
427 if (request_irq(gpio_irq
, gpio1_interrupt
, 0,
428 "GPIO1 ADB", (void *)0))
429 printk(KERN_ERR
"pmu: can't get irq %d"
430 " (GPIO1)\n", gpio_irq
);
432 gpio_irq_enabled
= 1;
436 /* Enable interrupts */
437 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
439 pmu_fully_inited
= 1;
441 /* Make sure PMU settle down before continuing. This is _very_ important
442 * since the IDE probe may shut interrupts down for quite a bit of time. If
443 * a PMU communication is pending while this happens, the PMU may timeout
444 * Not that on Core99 machines, the PMU keeps sending us environement
445 * messages, we should find a way to either fix IDE or make it call
446 * pmu_suspend() before masking interrupts. This can also happens while
447 * scolling with some fbdevs.
451 } while (pmu_state
!= idle
);
456 arch_initcall(via_pmu_start
);
459 * This has to be done after pci_init, which is a subsys_initcall.
461 static int __init
via_pmu_dev_init(void)
466 #ifdef CONFIG_PMAC_BACKLIGHT
467 /* Initialize backlight */
468 pmu_backlight_init();
472 if (machine_is_compatible("AAPL,3400/2400") ||
473 machine_is_compatible("AAPL,3500")) {
474 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
475 NULL
, PMAC_MB_INFO_MODEL
, 0);
476 pmu_battery_count
= 1;
477 if (mb
== PMAC_TYPE_COMET
)
478 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_COMET
;
480 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_HOOPER
;
481 } else if (machine_is_compatible("AAPL,PowerBook1998") ||
482 machine_is_compatible("PowerBook1,1")) {
483 pmu_battery_count
= 2;
484 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
485 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
487 struct device_node
* prim
=
488 of_find_node_by_name(NULL
, "power-mgt");
489 const u32
*prim_info
= NULL
;
491 prim_info
= of_get_property(prim
, "prim-info", NULL
);
493 /* Other stuffs here yet unknown */
494 pmu_battery_count
= (prim_info
[6] >> 16) & 0xff;
495 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
496 if (pmu_battery_count
> 1)
497 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
501 #endif /* CONFIG_PPC32 */
503 /* Create /proc/pmu */
504 proc_pmu_root
= proc_mkdir("pmu", NULL
);
508 for (i
=0; i
<pmu_battery_count
; i
++) {
510 sprintf(title
, "battery_%ld", i
);
511 proc_pmu_batt
[i
] = create_proc_read_entry(title
, 0, proc_pmu_root
,
512 proc_get_batt
, (void *)i
);
515 proc_pmu_info
= create_proc_read_entry("info", 0, proc_pmu_root
,
516 proc_get_info
, NULL
);
517 proc_pmu_irqstats
= create_proc_read_entry("interrupts", 0, proc_pmu_root
,
518 proc_get_irqstats
, NULL
);
519 proc_pmu_options
= create_proc_entry("options", 0600, proc_pmu_root
);
520 if (proc_pmu_options
) {
521 proc_pmu_options
->read_proc
= proc_read_options
;
522 proc_pmu_options
->write_proc
= proc_write_options
;
528 device_initcall(via_pmu_dev_init
);
534 struct adb_request req
;
536 out_8(&via
[B
], via
[B
] | TREQ
); /* negate TREQ */
537 out_8(&via
[DIRB
], (via
[DIRB
] | TREQ
) & ~TACK
); /* TACK in, TREQ out */
539 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
541 while (!req
.complete
) {
543 printk(KERN_ERR
"init_pmu: no response from PMU\n");
550 /* ack all pending interrupts */
552 interrupt_data
[0][0] = 1;
553 while (interrupt_data
[0][0] || pmu_state
!= idle
) {
555 printk(KERN_ERR
"init_pmu: timed out acking intrs\n");
558 if (pmu_state
== idle
)
560 via_pmu_interrupt(0, NULL
);
564 /* Tell PMU we are ready. */
565 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
566 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
567 while (!req
.complete
)
571 /* Read PMU version */
572 pmu_request(&req
, NULL
, 1, PMU_GET_VERSION
);
573 pmu_wait_complete(&req
);
574 if (req
.reply_len
> 0)
575 pmu_version
= req
.reply
[0];
577 /* Read server mode setting */
578 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
579 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
,
580 PMU_PWR_GET_POWERUP_EVENTS
);
581 pmu_wait_complete(&req
);
582 if (req
.reply_len
== 2) {
583 if (req
.reply
[1] & PMU_PWR_WAKEUP_AC_INSERT
)
584 option_server_mode
= 1;
585 printk(KERN_INFO
"via-pmu: Server Mode is %s\n",
586 option_server_mode
? "enabled" : "disabled");
598 static void pmu_set_server_mode(int server_mode
)
600 struct adb_request req
;
602 if (pmu_kind
!= PMU_KEYLARGO_BASED
)
605 option_server_mode
= server_mode
;
606 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
, PMU_PWR_GET_POWERUP_EVENTS
);
607 pmu_wait_complete(&req
);
608 if (req
.reply_len
< 2)
611 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
612 PMU_PWR_SET_POWERUP_EVENTS
,
613 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
615 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
616 PMU_PWR_CLR_POWERUP_EVENTS
,
617 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
618 pmu_wait_complete(&req
);
621 /* This new version of the code for 2400/3400/3500 powerbooks
622 * is inspired from the implementation in gkrellm-pmu
625 done_battery_state_ohare(struct adb_request
* req
)
629 * 0x01 : AC indicator
631 * 0x04 : battery exist
634 * 0x20 : full charged
635 * 0x40 : pcharge reset
636 * 0x80 : battery exist
638 * [1][2] : battery voltage
639 * [3] : CPU temperature
640 * [4] : battery temperature
645 unsigned int bat_flags
= PMU_BATT_TYPE_HOOPER
;
646 long pcharge
, charge
, vb
, vmax
, lmax
;
647 long vmax_charging
, vmax_charged
;
648 long amperage
, voltage
, time
, max
;
649 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
650 NULL
, PMAC_MB_INFO_MODEL
, 0);
652 if (req
->reply
[0] & 0x01)
653 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
655 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
657 if (mb
== PMAC_TYPE_COMET
) {
668 /* If battery installed */
669 if (req
->reply
[0] & 0x04) {
670 bat_flags
|= PMU_BATT_PRESENT
;
671 if (req
->reply
[0] & 0x02)
672 bat_flags
|= PMU_BATT_CHARGING
;
673 vb
= (req
->reply
[1] << 8) | req
->reply
[2];
674 voltage
= (vb
* 265 + 72665) / 10;
675 amperage
= req
->reply
[5];
676 if ((req
->reply
[0] & 0x01) == 0) {
678 vb
+= ((amperage
- 200) * 15)/100;
679 } else if (req
->reply
[0] & 0x02) {
680 vb
= (vb
* 97) / 100;
681 vmax
= vmax_charging
;
683 charge
= (100 * vb
) / vmax
;
684 if (req
->reply
[0] & 0x40) {
685 pcharge
= (req
->reply
[6] << 8) + req
->reply
[7];
689 pcharge
= 100 - pcharge
/ lmax
;
690 if (pcharge
< charge
)
694 time
= (charge
* 16440) / amperage
;
698 amperage
= -amperage
;
700 charge
= max
= amperage
= voltage
= time
= 0;
702 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
703 pmu_batteries
[pmu_cur_battery
].charge
= charge
;
704 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
705 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
706 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
707 pmu_batteries
[pmu_cur_battery
].time_remaining
= time
;
709 clear_bit(0, &async_req_locks
);
713 done_battery_state_smart(struct adb_request
* req
)
716 * [0] : format of this structure (known: 3,4,5)
729 * [4][5] : max charge
734 unsigned int bat_flags
= PMU_BATT_TYPE_SMART
;
736 unsigned int capa
, max
, voltage
;
738 if (req
->reply
[1] & 0x01)
739 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
741 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
744 capa
= max
= amperage
= voltage
= 0;
746 if (req
->reply
[1] & 0x04) {
747 bat_flags
|= PMU_BATT_PRESENT
;
748 switch(req
->reply
[0]) {
750 case 4: capa
= req
->reply
[2];
752 amperage
= *((signed char *)&req
->reply
[4]);
753 voltage
= req
->reply
[5];
755 case 5: capa
= (req
->reply
[2] << 8) | req
->reply
[3];
756 max
= (req
->reply
[4] << 8) | req
->reply
[5];
757 amperage
= *((signed short *)&req
->reply
[6]);
758 voltage
= (req
->reply
[8] << 8) | req
->reply
[9];
761 printk(KERN_WARNING
"pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
762 req
->reply_len
, req
->reply
[0], req
->reply
[1], req
->reply
[2], req
->reply
[3]);
767 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
768 bat_flags
|= PMU_BATT_CHARGING
;
770 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
771 pmu_batteries
[pmu_cur_battery
].charge
= capa
;
772 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
773 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
774 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
776 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
777 pmu_batteries
[pmu_cur_battery
].time_remaining
778 = ((max
-capa
) * 3600) / amperage
;
780 pmu_batteries
[pmu_cur_battery
].time_remaining
781 = (capa
* 3600) / (-amperage
);
783 pmu_batteries
[pmu_cur_battery
].time_remaining
= 0;
785 pmu_cur_battery
= (pmu_cur_battery
+ 1) % pmu_battery_count
;
787 clear_bit(0, &async_req_locks
);
791 query_battery_state(void)
793 if (test_and_set_bit(0, &async_req_locks
))
795 if (pmu_kind
== PMU_OHARE_BASED
)
796 pmu_request(&batt_req
, done_battery_state_ohare
,
797 1, PMU_BATTERY_STATE
);
799 pmu_request(&batt_req
, done_battery_state_smart
,
800 2, PMU_SMART_BATTERY_STATE
, pmu_cur_battery
+1);
804 proc_get_info(char *page
, char **start
, off_t off
,
805 int count
, int *eof
, void *data
)
809 p
+= sprintf(p
, "PMU driver version : %d\n", PMU_DRIVER_VERSION
);
810 p
+= sprintf(p
, "PMU firmware version : %02x\n", pmu_version
);
811 p
+= sprintf(p
, "AC Power : %d\n",
812 ((pmu_power_flags
& PMU_PWR_AC_PRESENT
) != 0) || pmu_battery_count
== 0);
813 p
+= sprintf(p
, "Battery count : %d\n", pmu_battery_count
);
819 proc_get_irqstats(char *page
, char **start
, off_t off
,
820 int count
, int *eof
, void *data
)
824 static const char *irq_names
[] = {
825 "Total CB1 triggered events",
826 "Total GPIO1 triggered events",
827 "PC-Card eject button",
828 "Sound/Brightness button",
830 "Battery state change",
831 "Environment interrupt",
833 "Ghost interrupt (zero len)",
834 "Empty interrupt (empty mask)",
838 for (i
=0; i
<11; i
++) {
839 p
+= sprintf(p
, " %2u: %10u (%s)\n",
840 i
, pmu_irq_stats
[i
], irq_names
[i
]);
846 proc_get_batt(char *page
, char **start
, off_t off
,
847 int count
, int *eof
, void *data
)
849 long batnum
= (long)data
;
852 p
+= sprintf(p
, "\n");
853 p
+= sprintf(p
, "flags : %08x\n",
854 pmu_batteries
[batnum
].flags
);
855 p
+= sprintf(p
, "charge : %d\n",
856 pmu_batteries
[batnum
].charge
);
857 p
+= sprintf(p
, "max_charge : %d\n",
858 pmu_batteries
[batnum
].max_charge
);
859 p
+= sprintf(p
, "current : %d\n",
860 pmu_batteries
[batnum
].amperage
);
861 p
+= sprintf(p
, "voltage : %d\n",
862 pmu_batteries
[batnum
].voltage
);
863 p
+= sprintf(p
, "time rem. : %d\n",
864 pmu_batteries
[batnum
].time_remaining
);
870 proc_read_options(char *page
, char **start
, off_t off
,
871 int count
, int *eof
, void *data
)
875 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
876 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
877 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
878 p
+= sprintf(p
, "lid_wakeup=%d\n", option_lid_wakeup
);
880 if (pmu_kind
== PMU_KEYLARGO_BASED
)
881 p
+= sprintf(p
, "server_mode=%d\n", option_server_mode
);
887 proc_write_options(struct file
*file
, const char __user
*buffer
,
888 unsigned long count
, void *data
)
892 unsigned long fcount
= count
;
898 if (copy_from_user(tmp
, buffer
, count
))
906 while(*val
&& (*val
!= '=')) {
916 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
917 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
918 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
919 if (!strcmp(label
, "lid_wakeup"))
920 option_lid_wakeup
= ((*val
) == '1');
922 if (pmu_kind
== PMU_KEYLARGO_BASED
&& !strcmp(label
, "server_mode")) {
924 new_value
= ((*val
) == '1');
925 if (new_value
!= option_server_mode
)
926 pmu_set_server_mode(new_value
);
932 /* Send an ADB command */
934 pmu_send_request(struct adb_request
*req
, int sync
)
938 if ((vias
== NULL
) || (!pmu_fully_inited
)) {
945 switch (req
->data
[0]) {
947 for (i
= 0; i
< req
->nbytes
- 1; ++i
)
948 req
->data
[i
] = req
->data
[i
+1];
950 if (pmu_data_len
[req
->data
[0]][1] != 0) {
951 req
->reply
[0] = ADB_RET_OK
;
955 ret
= pmu_queue_request(req
);
958 switch (req
->data
[1]) {
960 if (req
->nbytes
!= 2)
962 req
->data
[0] = PMU_READ_RTC
;
965 req
->reply
[0] = CUDA_PACKET
;
967 req
->reply
[2] = CUDA_GET_TIME
;
968 ret
= pmu_queue_request(req
);
971 if (req
->nbytes
!= 6)
973 req
->data
[0] = PMU_SET_RTC
;
975 for (i
= 1; i
<= 4; ++i
)
976 req
->data
[i
] = req
->data
[i
+1];
978 req
->reply
[0] = CUDA_PACKET
;
980 req
->reply
[2] = CUDA_SET_TIME
;
981 ret
= pmu_queue_request(req
);
988 for (i
= req
->nbytes
- 1; i
> 1; --i
)
989 req
->data
[i
+2] = req
->data
[i
];
990 req
->data
[3] = req
->nbytes
- 2;
991 req
->data
[2] = pmu_adb_flags
;
992 /*req->data[1] = req->data[1];*/
993 req
->data
[0] = PMU_ADB_CMD
;
995 req
->reply_expected
= 1;
997 ret
= pmu_queue_request(req
);
1006 while (!req
->complete
)
1012 /* Enable/disable autopolling */
1014 pmu_adb_autopoll(int devs
)
1016 struct adb_request req
;
1018 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1023 pmu_request(&req
, NULL
, 5, PMU_ADB_CMD
, 0, 0x86,
1024 adb_dev_map
>> 8, adb_dev_map
);
1027 pmu_request(&req
, NULL
, 1, PMU_ADB_POLL_OFF
);
1030 while (!req
.complete
)
1035 /* Reset the ADB bus */
1037 pmu_adb_reset_bus(void)
1039 struct adb_request req
;
1040 int save_autopoll
= adb_dev_map
;
1042 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1045 /* anyone got a better idea?? */
1046 pmu_adb_autopoll(0);
1050 req
.data
[0] = PMU_ADB_CMD
;
1052 req
.data
[2] = ADB_BUSRESET
;
1056 req
.reply_expected
= 1;
1057 if (pmu_queue_request(&req
) != 0) {
1058 printk(KERN_ERR
"pmu_adb_reset_bus: pmu_queue_request failed\n");
1061 pmu_wait_complete(&req
);
1063 if (save_autopoll
!= 0)
1064 pmu_adb_autopoll(save_autopoll
);
1068 #endif /* CONFIG_ADB */
1070 /* Construct and send a pmu request */
1072 pmu_request(struct adb_request
*req
, void (*done
)(struct adb_request
*),
1081 if (nbytes
< 0 || nbytes
> 32) {
1082 printk(KERN_ERR
"pmu_request: bad nbytes (%d)\n", nbytes
);
1086 req
->nbytes
= nbytes
;
1088 va_start(list
, nbytes
);
1089 for (i
= 0; i
< nbytes
; ++i
)
1090 req
->data
[i
] = va_arg(list
, int);
1093 req
->reply_expected
= 0;
1094 return pmu_queue_request(req
);
1098 pmu_queue_request(struct adb_request
*req
)
1100 unsigned long flags
;
1107 if (req
->nbytes
<= 0) {
1111 nsend
= pmu_data_len
[req
->data
[0]][0];
1112 if (nsend
>= 0 && req
->nbytes
!= nsend
+ 1) {
1121 spin_lock_irqsave(&pmu_lock
, flags
);
1122 if (current_req
!= 0) {
1123 last_req
->next
= req
;
1128 if (pmu_state
== idle
)
1131 spin_unlock_irqrestore(&pmu_lock
, flags
);
1139 /* Sightly increased the delay, I had one occurrence of the message
1143 while ((in_8(&via
[B
]) & TACK
) == 0) {
1144 if (--timeout
< 0) {
1145 printk(KERN_ERR
"PMU not responding (!ack)\n");
1152 /* New PMU seems to be very sensitive to those timings, so we make sure
1153 * PCI is flushed immediately */
1157 volatile unsigned char __iomem
*v
= via
;
1159 out_8(&v
[ACR
], in_8(&v
[ACR
]) | SR_OUT
| SR_EXT
);
1161 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
); /* assert TREQ */
1168 volatile unsigned char __iomem
*v
= via
;
1170 out_8(&v
[ACR
], (in_8(&v
[ACR
]) & ~SR_OUT
) | SR_EXT
);
1171 in_8(&v
[SR
]); /* resets SR */
1172 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
);
1177 pmu_done(struct adb_request
*req
)
1179 void (*done
)(struct adb_request
*) = req
->done
;
1182 /* Here, we assume that if the request has a done member, the
1183 * struct request will survive to setting req->complete to 1
1192 struct adb_request
*req
;
1194 /* assert pmu_state == idle */
1195 /* get the packet to send */
1197 if (req
== 0 || pmu_state
!= idle
1198 || (/*req->reply_expected && */req_awaiting_reply
))
1201 pmu_state
= sending
;
1203 data_len
= pmu_data_len
[req
->data
[0]][0];
1205 /* Sounds safer to make sure ACK is high before writing. This helped
1206 * kill a problem with ADB and some iBooks
1209 /* set the shift register to shift out and send a byte */
1210 send_byte(req
->data
[0]);
1220 via_pmu_interrupt(0, NULL
);
1230 /* Kicks ADB read when PMU is suspended */
1231 adb_int_pending
= 1;
1233 via_pmu_interrupt(0, NULL
);
1234 } while (pmu_suspended
&& (adb_int_pending
|| pmu_state
!= idle
1235 || req_awaiting_reply
));
1239 pmu_wait_complete(struct adb_request
*req
)
1243 while((pmu_state
!= idle
&& pmu_state
!= locked
) || !req
->complete
)
1244 via_pmu_interrupt(0, NULL
);
1247 /* This function loops until the PMU is idle and prevents it from
1248 * anwsering to ADB interrupts. pmu_request can still be called.
1249 * This is done to avoid spurrious shutdowns when we know we'll have
1250 * interrupts switched off for a long time
1255 unsigned long flags
;
1260 spin_lock_irqsave(&pmu_lock
, flags
);
1262 if (pmu_suspended
> 1) {
1263 spin_unlock_irqrestore(&pmu_lock
, flags
);
1268 spin_unlock_irqrestore(&pmu_lock
, flags
);
1269 if (req_awaiting_reply
)
1270 adb_int_pending
= 1;
1271 via_pmu_interrupt(0, NULL
);
1272 spin_lock_irqsave(&pmu_lock
, flags
);
1273 if (!adb_int_pending
&& pmu_state
== idle
&& !req_awaiting_reply
) {
1275 disable_irq_nosync(gpio_irq
);
1276 out_8(&via
[IER
], CB1_INT
| IER_CLR
);
1277 spin_unlock_irqrestore(&pmu_lock
, flags
);
1286 unsigned long flags
;
1288 if (!via
|| (pmu_suspended
< 1))
1291 spin_lock_irqsave(&pmu_lock
, flags
);
1293 if (pmu_suspended
> 0) {
1294 spin_unlock_irqrestore(&pmu_lock
, flags
);
1297 adb_int_pending
= 1;
1299 enable_irq(gpio_irq
);
1300 out_8(&via
[IER
], CB1_INT
| IER_SET
);
1301 spin_unlock_irqrestore(&pmu_lock
, flags
);
1305 /* Interrupt data could be the result data from an ADB cmd */
1307 pmu_handle_data(unsigned char *data
, int len
)
1309 unsigned char ints
, pirq
;
1313 if (drop_interrupts
|| len
< 1) {
1314 adb_int_pending
= 0;
1319 /* Get PMU interrupt mask */
1322 /* Record zero interrupts for stats */
1326 /* Hack to deal with ADB autopoll flag */
1327 if (ints
& PMU_INT_ADB
)
1328 ints
&= ~(PMU_INT_ADB_AUTO
| PMU_INT_AUTO_SRQ_POLL
);
1333 if (i
> pmu_irq_stats
[10])
1334 pmu_irq_stats
[10] = i
;
1338 for (pirq
= 0; pirq
< 8; pirq
++)
1339 if (ints
& (1 << pirq
))
1341 pmu_irq_stats
[pirq
]++;
1343 ints
&= ~(1 << pirq
);
1345 /* Note: for some reason, we get an interrupt with len=1,
1346 * data[0]==0 after each normal ADB interrupt, at least
1347 * on the Pismo. Still investigating... --BenH
1349 if ((1 << pirq
) & PMU_INT_ADB
) {
1350 if ((data
[0] & PMU_INT_ADB_AUTO
) == 0) {
1351 struct adb_request
*req
= req_awaiting_reply
;
1353 printk(KERN_ERR
"PMU: extra ADB reply\n");
1356 req_awaiting_reply
= NULL
;
1360 memcpy(req
->reply
, data
+ 1, len
- 1);
1361 req
->reply_len
= len
- 1;
1365 if (len
== 4 && data
[1] == 0x2c) {
1366 extern int xmon_wants_key
, xmon_adb_keycode
;
1367 if (xmon_wants_key
) {
1368 xmon_adb_keycode
= data
[2];
1374 * XXX On the [23]400 the PMU gives us an up
1375 * event for keycodes 0x74 or 0x75 when the PC
1376 * card eject buttons are released, so we
1377 * ignore those events.
1379 if (!(pmu_kind
== PMU_OHARE_BASED
&& len
== 4
1380 && data
[1] == 0x2c && data
[3] == 0xff
1381 && (data
[2] & ~1) == 0xf4))
1382 adb_input(data
+1, len
-1, 1);
1383 #endif /* CONFIG_ADB */
1386 /* Sound/brightness button pressed */
1387 else if ((1 << pirq
) & PMU_INT_SNDBRT
) {
1388 #ifdef CONFIG_PMAC_BACKLIGHT
1390 pmac_backlight_set_legacy_brightness_pmu(data
[1] >> 4);
1393 /* Tick interrupt */
1394 else if ((1 << pirq
) & PMU_INT_TICK
) {
1395 /* Environement or tick interrupt, query batteries */
1396 if (pmu_battery_count
) {
1397 if ((--query_batt_timer
) == 0) {
1398 query_battery_state();
1399 query_batt_timer
= BATTERY_POLLING_COUNT
;
1403 else if ((1 << pirq
) & PMU_INT_ENVIRONMENT
) {
1404 if (pmu_battery_count
)
1405 query_battery_state();
1406 pmu_pass_intr(data
, len
);
1407 /* len == 6 is probably a bad check. But how do I
1408 * know what PMU versions send what events here? */
1410 via_pmu_event(PMU_EVT_POWER
, !!(data
[1]&8));
1411 via_pmu_event(PMU_EVT_LID
, data
[1]&1);
1414 pmu_pass_intr(data
, len
);
1419 static struct adb_request
*
1422 struct adb_request
*req
;
1425 if (via
[B
] & TREQ
) {
1426 printk(KERN_ERR
"PMU: spurious SR intr (%x)\n", via
[B
]);
1427 out_8(&via
[IFR
], SR_INT
);
1430 /* The ack may not yet be low when we get the interrupt */
1431 while ((in_8(&via
[B
]) & TACK
) != 0)
1434 /* if reading grab the byte, and reset the interrupt */
1435 if (pmu_state
== reading
|| pmu_state
== reading_intr
)
1436 bite
= in_8(&via
[SR
]);
1438 /* reset TREQ and wait for TACK to go high */
1439 out_8(&via
[B
], in_8(&via
[B
]) | TREQ
);
1442 switch (pmu_state
) {
1446 data_len
= req
->nbytes
- 1;
1447 send_byte(data_len
);
1450 if (data_index
<= data_len
) {
1451 send_byte(req
->data
[data_index
++]);
1455 data_len
= pmu_data_len
[req
->data
[0]][1];
1456 if (data_len
== 0) {
1458 current_req
= req
->next
;
1459 if (req
->reply_expected
)
1460 req_awaiting_reply
= req
;
1464 pmu_state
= reading
;
1466 reply_ptr
= req
->reply
+ req
->reply_len
;
1474 pmu_state
= reading_intr
;
1475 reply_ptr
= interrupt_data
[int_data_last
];
1477 if (gpio_irq
>= 0 && !gpio_irq_enabled
) {
1478 enable_irq(gpio_irq
);
1479 gpio_irq_enabled
= 1;
1485 if (data_len
== -1) {
1488 printk(KERN_ERR
"PMU: bad reply len %d\n", bite
);
1489 } else if (data_index
< 32) {
1490 reply_ptr
[data_index
++] = bite
;
1492 if (data_index
< data_len
) {
1497 if (pmu_state
== reading_intr
) {
1499 int_data_state
[int_data_last
] = int_data_ready
;
1500 interrupt_data_len
[int_data_last
] = data_len
;
1504 * For PMU sleep and freq change requests, we lock the
1505 * PMU until it's explicitly unlocked. This avoids any
1506 * spurrious event polling getting in
1508 current_req
= req
->next
;
1509 req
->reply_len
+= data_index
;
1510 if (req
->data
[0] == PMU_SLEEP
|| req
->data
[0] == PMU_CPU_SPEED
)
1519 printk(KERN_ERR
"via_pmu_interrupt: unknown state %d?\n",
1526 via_pmu_interrupt(int irq
, void *arg
)
1528 unsigned long flags
;
1532 struct adb_request
*req
= NULL
;
1535 /* This is a bit brutal, we can probably do better */
1536 spin_lock_irqsave(&pmu_lock
, flags
);
1540 intr
= in_8(&via
[IFR
]) & (SR_INT
| CB1_INT
);
1544 if (++nloop
> 1000) {
1545 printk(KERN_DEBUG
"PMU: stuck in intr loop, "
1546 "intr=%x, ier=%x pmu_state=%d\n",
1547 intr
, in_8(&via
[IER
]), pmu_state
);
1550 out_8(&via
[IFR
], intr
);
1551 if (intr
& CB1_INT
) {
1552 adb_int_pending
= 1;
1555 if (intr
& SR_INT
) {
1556 req
= pmu_sr_intr();
1563 if (pmu_state
== idle
) {
1564 if (adb_int_pending
) {
1565 if (int_data_state
[0] == int_data_empty
)
1567 else if (int_data_state
[1] == int_data_empty
)
1572 int_data_state
[int_data_last
] = int_data_fill
;
1573 /* Sounds safer to make sure ACK is high before writing.
1574 * This helped kill a problem with ADB and some iBooks
1577 send_byte(PMU_INT_ACK
);
1578 adb_int_pending
= 0;
1579 } else if (current_req
)
1583 /* Mark the oldest buffer for flushing */
1584 if (int_data_state
[!int_data_last
] == int_data_ready
) {
1585 int_data_state
[!int_data_last
] = int_data_flush
;
1586 int_data
= !int_data_last
;
1587 } else if (int_data_state
[int_data_last
] == int_data_ready
) {
1588 int_data_state
[int_data_last
] = int_data_flush
;
1589 int_data
= int_data_last
;
1592 spin_unlock_irqrestore(&pmu_lock
, flags
);
1594 /* Deal with completed PMU requests outside of the lock */
1600 /* Deal with interrupt datas outside of the lock */
1601 if (int_data
>= 0) {
1602 pmu_handle_data(interrupt_data
[int_data
], interrupt_data_len
[int_data
]);
1603 spin_lock_irqsave(&pmu_lock
, flags
);
1605 int_data_state
[int_data
] = int_data_empty
;
1610 return IRQ_RETVAL(handled
);
1616 unsigned long flags
;
1618 spin_lock_irqsave(&pmu_lock
, flags
);
1619 if (pmu_state
== locked
)
1621 adb_int_pending
= 1;
1622 spin_unlock_irqrestore(&pmu_lock
, flags
);
1627 gpio1_interrupt(int irq
, void *arg
)
1629 unsigned long flags
;
1631 if ((in_8(gpio_reg
+ 0x9) & 0x02) == 0) {
1632 spin_lock_irqsave(&pmu_lock
, flags
);
1633 if (gpio_irq_enabled
> 0) {
1634 disable_irq_nosync(gpio_irq
);
1635 gpio_irq_enabled
= 0;
1638 adb_int_pending
= 1;
1639 spin_unlock_irqrestore(&pmu_lock
, flags
);
1640 via_pmu_interrupt(0, NULL
);
1647 pmu_enable_irled(int on
)
1649 struct adb_request req
;
1653 if (pmu_kind
== PMU_KEYLARGO_BASED
)
1656 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
, PMU_POW_IRLED
|
1657 (on
? PMU_POW_ON
: PMU_POW_OFF
));
1658 pmu_wait_complete(&req
);
1664 struct adb_request req
;
1669 local_irq_disable();
1671 drop_interrupts
= 1;
1673 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1674 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1676 while(!req
.complete
)
1680 pmu_request(&req
, NULL
, 1, PMU_RESET
);
1681 pmu_wait_complete(&req
);
1689 struct adb_request req
;
1694 local_irq_disable();
1696 drop_interrupts
= 1;
1698 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1699 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1701 pmu_wait_complete(&req
);
1703 /* Disable server mode on shutdown or we'll just
1706 pmu_set_server_mode(0);
1709 pmu_request(&req
, NULL
, 5, PMU_SHUTDOWN
,
1710 'M', 'A', 'T', 'T');
1711 pmu_wait_complete(&req
);
1722 #ifdef CONFIG_PM_SLEEP
1724 static LIST_HEAD(sleep_notifiers
);
1727 pmu_register_sleep_notifier(struct pmu_sleep_notifier
*n
)
1729 struct list_head
*list
;
1730 struct pmu_sleep_notifier
*notifier
;
1732 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
1733 list
= list
->next
) {
1734 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1735 if (n
->priority
> notifier
->priority
)
1738 __list_add(&n
->list
, list
->prev
, list
);
1741 EXPORT_SYMBOL(pmu_register_sleep_notifier
);
1744 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier
* n
)
1746 if (n
->list
.next
== 0)
1749 n
->list
.next
= NULL
;
1752 EXPORT_SYMBOL(pmu_unregister_sleep_notifier
);
1753 #endif /* CONFIG_PM_SLEEP */
1755 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
1757 /* Sleep is broadcast last-to-first */
1758 static void broadcast_sleep(int when
)
1760 struct list_head
*list
;
1761 struct pmu_sleep_notifier
*notifier
;
1763 for (list
= sleep_notifiers
.prev
; list
!= &sleep_notifiers
;
1764 list
= list
->prev
) {
1765 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1766 notifier
->notifier_call(notifier
, when
);
1770 /* Wake is broadcast first-to-last */
1771 static void broadcast_wake(void)
1773 struct list_head
*list
;
1774 struct pmu_sleep_notifier
*notifier
;
1776 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
1777 list
= list
->next
) {
1778 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
1779 notifier
->notifier_call(notifier
, PBOOK_WAKE
);
1784 * This struct is used to store config register values for
1785 * PCI devices which may get powered off when we sleep.
1787 static struct pci_save
{
1793 static int pbook_npci_saves
;
1796 pbook_alloc_pci_save(void)
1799 struct pci_dev
*pd
= NULL
;
1802 while ((pd
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1807 pbook_pci_saves
= (struct pci_save
*)
1808 kmalloc(npci
* sizeof(struct pci_save
), GFP_KERNEL
);
1809 pbook_npci_saves
= npci
;
1813 pbook_free_pci_save(void)
1815 if (pbook_pci_saves
== NULL
)
1817 kfree(pbook_pci_saves
);
1818 pbook_pci_saves
= NULL
;
1819 pbook_npci_saves
= 0;
1823 pbook_pci_save(void)
1825 struct pci_save
*ps
= pbook_pci_saves
;
1826 struct pci_dev
*pd
= NULL
;
1827 int npci
= pbook_npci_saves
;
1832 while ((pd
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1837 pci_read_config_word(pd
, PCI_COMMAND
, &ps
->command
);
1838 pci_read_config_word(pd
, PCI_CACHE_LINE_SIZE
, &ps
->cache_lat
);
1839 pci_read_config_word(pd
, PCI_INTERRUPT_LINE
, &ps
->intr
);
1840 pci_read_config_dword(pd
, PCI_ROM_ADDRESS
, &ps
->rom_address
);
1845 /* For this to work, we must take care of a few things: If gmac was enabled
1846 * during boot, it will be in the pci dev list. If it's disabled at this point
1847 * (and it will probably be), then you can't access it's config space.
1850 pbook_pci_restore(void)
1853 struct pci_save
*ps
= pbook_pci_saves
- 1;
1854 struct pci_dev
*pd
= NULL
;
1855 int npci
= pbook_npci_saves
;
1858 while ((pd
= pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
1862 if (ps
->command
== 0)
1864 pci_read_config_word(pd
, PCI_COMMAND
, &cmd
);
1865 if ((ps
->command
& ~cmd
) == 0)
1867 switch (pd
->hdr_type
) {
1868 case PCI_HEADER_TYPE_NORMAL
:
1869 for (j
= 0; j
< 6; ++j
)
1870 pci_write_config_dword(pd
,
1871 PCI_BASE_ADDRESS_0
+ j
*4,
1872 pd
->resource
[j
].start
);
1873 pci_write_config_dword(pd
, PCI_ROM_ADDRESS
,
1875 pci_write_config_word(pd
, PCI_CACHE_LINE_SIZE
,
1877 pci_write_config_word(pd
, PCI_INTERRUPT_LINE
,
1879 pci_write_config_word(pd
, PCI_COMMAND
, ps
->command
);
1886 /* N.B. This doesn't work on the 3400 */
1890 struct adb_request req
;
1892 memset(&req
, 0, sizeof(req
));
1894 for (; n
> 0; --n
) {
1901 req
.reply
[0] = ADB_RET_OK
;
1903 req
.reply_expected
= 0;
1904 pmu_polled_request(&req
);
1912 req
.reply
[0] = ADB_RET_OK
;
1914 req
.reply_expected
= 0;
1915 pmu_polled_request(&req
);
1923 * Put the powerbook to sleep.
1926 static u32 save_via
[8];
1929 save_via_state(void)
1931 save_via
[0] = in_8(&via
[ANH
]);
1932 save_via
[1] = in_8(&via
[DIRA
]);
1933 save_via
[2] = in_8(&via
[B
]);
1934 save_via
[3] = in_8(&via
[DIRB
]);
1935 save_via
[4] = in_8(&via
[PCR
]);
1936 save_via
[5] = in_8(&via
[ACR
]);
1937 save_via
[6] = in_8(&via
[T1CL
]);
1938 save_via
[7] = in_8(&via
[T1CH
]);
1941 restore_via_state(void)
1943 out_8(&via
[ANH
], save_via
[0]);
1944 out_8(&via
[DIRA
], save_via
[1]);
1945 out_8(&via
[B
], save_via
[2]);
1946 out_8(&via
[DIRB
], save_via
[3]);
1947 out_8(&via
[PCR
], save_via
[4]);
1948 out_8(&via
[ACR
], save_via
[5]);
1949 out_8(&via
[T1CL
], save_via
[6]);
1950 out_8(&via
[T1CH
], save_via
[7]);
1951 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
1952 out_8(&via
[IFR
], 0x7f); /* clear IFR */
1953 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
1956 extern void pmu_backlight_set_sleep(int sleep
);
1959 pmac_suspend_devices(void)
1963 pm_prepare_console();
1965 /* Notify old-style device drivers */
1966 broadcast_sleep(PBOOK_SLEEP_REQUEST
);
1968 /* Sync the disks. */
1969 /* XXX It would be nice to have some way to ensure that
1970 * nobody is dirtying any new buffers while we wait. That
1971 * could be achieved using the refrigerator for processes
1976 broadcast_sleep(PBOOK_SLEEP_NOW
);
1978 /* Send suspend call to devices, hold the device core's dpm_sem */
1979 ret
= device_suspend(PMSG_SUSPEND
);
1982 printk(KERN_ERR
"Driver sleep failed\n");
1986 #ifdef CONFIG_PMAC_BACKLIGHT
1987 /* Tell backlight code not to muck around with the chip anymore */
1988 pmu_backlight_set_sleep(1);
1991 /* Call platform functions marked "on sleep" */
1992 pmac_pfunc_i2c_suspend();
1993 pmac_pfunc_base_suspend();
1995 /* Stop preemption */
1998 /* Make sure the decrementer won't interrupt us */
1999 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2000 /* Make sure any pending DEC interrupt occurring while we did
2001 * the above didn't re-enable the DEC */
2003 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2005 /* We can now disable MSR_EE. This code of course works properly only
2006 * on UP machines... For SMP, if we ever implement sleep, we'll have to
2007 * stop the "other" CPUs way before we do all that stuff.
2009 local_irq_disable();
2011 /* Broadcast power down irq
2012 * This isn't that useful in most cases (only directly wired devices can
2013 * use this but still... This will take care of sysdev's as well, so
2014 * we exit from here with local irqs disabled and PIC off.
2016 ret
= device_power_down(PMSG_SUSPEND
);
2018 wakeup_decrementer();
2023 printk(KERN_ERR
"Driver powerdown failed\n");
2027 /* Wait for completion of async requests */
2028 while (!batt_req
.complete
)
2031 /* Giveup the lazy FPU & vec so we don't have to back them
2032 * up from the low level code
2036 #ifdef CONFIG_ALTIVEC
2037 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
2038 enable_kernel_altivec();
2039 #endif /* CONFIG_ALTIVEC */
2045 pmac_wakeup_devices(void)
2049 #ifdef CONFIG_PMAC_BACKLIGHT
2050 /* Tell backlight code it can use the chip again */
2051 pmu_backlight_set_sleep(0);
2054 /* Power back up system devices (including the PIC) */
2057 /* Force a poll of ADB interrupts */
2058 adb_int_pending
= 1;
2059 via_pmu_interrupt(0, NULL
);
2061 /* Restart jiffies & scheduling */
2062 wakeup_decrementer();
2064 /* Re-enable local CPU interrupts */
2069 /* Call platform functions marked "on wake" */
2070 pmac_pfunc_base_resume();
2071 pmac_pfunc_i2c_resume();
2073 /* Resume devices */
2076 /* Notify old style drivers */
2079 pm_restore_console();
2084 #define GRACKLE_PM (1<<7)
2085 #define GRACKLE_DOZE (1<<5)
2086 #define GRACKLE_NAP (1<<4)
2087 #define GRACKLE_SLEEP (1<<3)
2089 static int powerbook_sleep_grackle(void)
2091 unsigned long save_l2cr
;
2092 unsigned short pmcr1
;
2093 struct adb_request req
;
2095 struct pci_dev
*grackle
;
2097 grackle
= pci_get_bus_and_slot(0, 0);
2101 ret
= pmac_suspend_devices();
2103 printk(KERN_ERR
"Sleep rejected by devices\n");
2107 /* Turn off various things. Darwin does some retry tests here... */
2108 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
, PMU_POW0_OFF
|PMU_POW0_HARD_DRIVE
);
2109 pmu_wait_complete(&req
);
2110 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2111 PMU_POW_OFF
|PMU_POW_BACKLIGHT
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2112 pmu_wait_complete(&req
);
2114 /* For 750, save backside cache setting and disable it */
2115 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2117 if (!__fake_sleep
) {
2118 /* Ask the PMU to put us to sleep */
2119 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2120 pmu_wait_complete(&req
);
2123 /* The VIA is supposed not to be restored correctly*/
2125 /* We shut down some HW */
2126 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2128 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2129 /* Apparently, MacOS uses NAP mode for Grackle ??? */
2130 pmcr1
&= ~(GRACKLE_DOZE
|GRACKLE_SLEEP
);
2131 pmcr1
|= GRACKLE_PM
|GRACKLE_NAP
;
2132 pci_write_config_word(grackle
, 0x70, pmcr1
);
2134 /* Call low-level ASM sleep handler */
2138 low_sleep_handler();
2140 /* We're awake again, stop grackle PM */
2141 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2142 pmcr1
&= ~(GRACKLE_PM
|GRACKLE_DOZE
|GRACKLE_SLEEP
|GRACKLE_NAP
);
2143 pci_write_config_word(grackle
, 0x70, pmcr1
);
2145 pci_dev_put(grackle
);
2147 /* Make sure the PMU is idle */
2148 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2149 restore_via_state();
2151 /* Restore L2 cache */
2152 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2153 _set_L2CR(save_l2cr
);
2155 /* Restore userland MMU context */
2156 set_context(current
->active_mm
->context
.id
, current
->active_mm
->pgd
);
2158 /* Power things up */
2160 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2161 pmu_wait_complete(&req
);
2162 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
,
2163 PMU_POW0_ON
|PMU_POW0_HARD_DRIVE
);
2164 pmu_wait_complete(&req
);
2165 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2166 PMU_POW_ON
|PMU_POW_BACKLIGHT
|PMU_POW_CHARGER
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2167 pmu_wait_complete(&req
);
2169 pmac_wakeup_devices();
2175 powerbook_sleep_Core99(void)
2177 unsigned long save_l2cr
;
2178 unsigned long save_l3cr
;
2179 struct adb_request req
;
2182 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0) {
2183 printk(KERN_ERR
"Sleep mode not supported on this machine\n");
2187 if (num_online_cpus() > 1 || cpu_is_offline(0))
2190 ret
= pmac_suspend_devices();
2192 printk(KERN_ERR
"Sleep rejected by devices\n");
2196 /* Stop environment and ADB interrupts */
2197 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
2198 pmu_wait_complete(&req
);
2200 /* Tell PMU what events will wake us up */
2201 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_CLR_WAKEUP_EVENTS
,
2203 pmu_wait_complete(&req
);
2204 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_SET_WAKEUP_EVENTS
,
2205 0, PMU_PWR_WAKEUP_KEY
|
2206 (option_lid_wakeup
? PMU_PWR_WAKEUP_LID_OPEN
: 0));
2207 pmu_wait_complete(&req
);
2209 /* Save the state of the L2 and L3 caches */
2210 save_l3cr
= _get_L3CR(); /* (returns -1 if not available) */
2211 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2213 if (!__fake_sleep
) {
2214 /* Ask the PMU to put us to sleep */
2215 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2216 pmu_wait_complete(&req
);
2219 /* The VIA is supposed not to be restored correctly*/
2222 /* Shut down various ASICs. There's a chance that we can no longer
2223 * talk to the PMU after this, so I moved it to _after_ sending the
2224 * sleep command to it. Still need to be checked.
2226 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 1);
2228 /* Call low-level ASM sleep handler */
2232 low_sleep_handler();
2234 /* Restore Apple core ASICs state */
2235 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 0);
2238 restore_via_state();
2240 /* tweak LPJ before cpufreq is there */
2241 loops_per_jiffy
*= 2;
2244 pmac_call_early_video_resume();
2246 /* Restore L2 cache */
2247 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2248 _set_L2CR(save_l2cr
);
2249 /* Restore L3 cache */
2250 if (save_l3cr
!= 0xffffffff && (save_l3cr
& L3CR_L3E
) != 0)
2251 _set_L3CR(save_l3cr
);
2253 /* Restore userland MMU context */
2254 set_context(current
->active_mm
->context
.id
, current
->active_mm
->pgd
);
2256 /* Tell PMU we are ready */
2258 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2259 pmu_wait_complete(&req
);
2260 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2261 pmu_wait_complete(&req
);
2263 /* Restore LPJ, cpufreq will adjust the cpu frequency */
2264 loops_per_jiffy
/= 2;
2266 pmac_wakeup_devices();
2271 #define PB3400_MEM_CTRL 0xf8000000
2272 #define PB3400_MEM_CTRL_SLEEP 0x70
2275 powerbook_sleep_3400(void)
2280 struct adb_request sleep_req
;
2281 void __iomem
*mem_ctrl
;
2282 unsigned int __iomem
*mem_ctrl_sleep
;
2284 /* first map in the memory controller registers */
2285 mem_ctrl
= ioremap(PB3400_MEM_CTRL
, 0x100);
2286 if (mem_ctrl
== NULL
) {
2287 printk("powerbook_sleep_3400: ioremap failed\n");
2290 mem_ctrl_sleep
= mem_ctrl
+ PB3400_MEM_CTRL_SLEEP
;
2292 /* Allocate room for PCI save */
2293 pbook_alloc_pci_save();
2295 ret
= pmac_suspend_devices();
2297 pbook_free_pci_save();
2298 printk(KERN_ERR
"Sleep rejected by devices\n");
2302 /* Save the state of PCI config space for some slots */
2305 /* Set the memory controller to keep the memory refreshed
2306 while we're asleep */
2307 for (i
= 0x403f; i
>= 0x4000; --i
) {
2308 out_be32(mem_ctrl_sleep
, i
);
2310 x
= (in_be32(mem_ctrl_sleep
) >> 16) & 0x3ff;
2316 /* Ask the PMU to put us to sleep */
2317 pmu_request(&sleep_req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2318 while (!sleep_req
.complete
)
2321 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2323 /* displacement-flush the L2 cache - necessary? */
2324 for (p
= KERNELBASE
; p
< KERNELBASE
+ 0x100000; p
+= 0x1000)
2325 i
= *(volatile int *)p
;
2328 /* Put the CPU into sleep mode */
2329 hid0
= mfspr(SPRN_HID0
);
2330 hid0
= (hid0
& ~(HID0_NAP
| HID0_DOZE
)) | HID0_SLEEP
;
2331 mtspr(SPRN_HID0
, hid0
);
2332 mtmsr(mfmsr() | MSR_POW
| MSR_EE
);
2335 /* OK, we're awake again, start restoring things */
2336 out_be32(mem_ctrl_sleep
, 0x3f);
2337 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2338 pbook_pci_restore();
2341 /* wait for the PMU interrupt sequence to complete */
2345 pmac_wakeup_devices();
2346 pbook_free_pci_save();
2352 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2355 * Support for /dev/pmu device
2357 #define RB_SIZE 0x10
2358 struct pmu_private
{
2359 struct list_head list
;
2364 unsigned char data
[16];
2366 wait_queue_head_t wait
;
2368 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2369 int backlight_locker
;
2373 static LIST_HEAD(all_pmu_pvt
);
2374 static DEFINE_SPINLOCK(all_pvt_lock
);
2377 pmu_pass_intr(unsigned char *data
, int len
)
2379 struct pmu_private
*pp
;
2380 struct list_head
*list
;
2382 unsigned long flags
;
2384 if (len
> sizeof(pp
->rb_buf
[0].data
))
2385 len
= sizeof(pp
->rb_buf
[0].data
);
2386 spin_lock_irqsave(&all_pvt_lock
, flags
);
2387 for (list
= &all_pmu_pvt
; (list
= list
->next
) != &all_pmu_pvt
; ) {
2388 pp
= list_entry(list
, struct pmu_private
, list
);
2389 spin_lock(&pp
->lock
);
2393 if (i
!= pp
->rb_get
) {
2394 struct rb_entry
*rp
= &pp
->rb_buf
[pp
->rb_put
];
2396 memcpy(rp
->data
, data
, len
);
2398 wake_up_interruptible(&pp
->wait
);
2400 spin_unlock(&pp
->lock
);
2402 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2406 pmu_open(struct inode
*inode
, struct file
*file
)
2408 struct pmu_private
*pp
;
2409 unsigned long flags
;
2411 pp
= kmalloc(sizeof(struct pmu_private
), GFP_KERNEL
);
2414 pp
->rb_get
= pp
->rb_put
= 0;
2415 spin_lock_init(&pp
->lock
);
2416 init_waitqueue_head(&pp
->wait
);
2417 spin_lock_irqsave(&all_pvt_lock
, flags
);
2418 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2419 pp
->backlight_locker
= 0;
2421 list_add(&pp
->list
, &all_pmu_pvt
);
2422 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2423 file
->private_data
= pp
;
2428 pmu_read(struct file
*file
, char __user
*buf
,
2429 size_t count
, loff_t
*ppos
)
2431 struct pmu_private
*pp
= file
->private_data
;
2432 DECLARE_WAITQUEUE(wait
, current
);
2433 unsigned long flags
;
2436 if (count
< 1 || pp
== 0)
2438 if (!access_ok(VERIFY_WRITE
, buf
, count
))
2441 spin_lock_irqsave(&pp
->lock
, flags
);
2442 add_wait_queue(&pp
->wait
, &wait
);
2443 current
->state
= TASK_INTERRUPTIBLE
;
2447 if (pp
->rb_get
!= pp
->rb_put
) {
2449 struct rb_entry
*rp
= &pp
->rb_buf
[i
];
2451 spin_unlock_irqrestore(&pp
->lock
, flags
);
2454 if (ret
> 0 && copy_to_user(buf
, rp
->data
, ret
))
2458 spin_lock_irqsave(&pp
->lock
, flags
);
2463 if (file
->f_flags
& O_NONBLOCK
)
2466 if (signal_pending(current
))
2468 spin_unlock_irqrestore(&pp
->lock
, flags
);
2470 spin_lock_irqsave(&pp
->lock
, flags
);
2472 current
->state
= TASK_RUNNING
;
2473 remove_wait_queue(&pp
->wait
, &wait
);
2474 spin_unlock_irqrestore(&pp
->lock
, flags
);
2480 pmu_write(struct file
*file
, const char __user
*buf
,
2481 size_t count
, loff_t
*ppos
)
2487 pmu_fpoll(struct file
*filp
, poll_table
*wait
)
2489 struct pmu_private
*pp
= filp
->private_data
;
2490 unsigned int mask
= 0;
2491 unsigned long flags
;
2495 poll_wait(filp
, &pp
->wait
, wait
);
2496 spin_lock_irqsave(&pp
->lock
, flags
);
2497 if (pp
->rb_get
!= pp
->rb_put
)
2499 spin_unlock_irqrestore(&pp
->lock
, flags
);
2504 pmu_release(struct inode
*inode
, struct file
*file
)
2506 struct pmu_private
*pp
= file
->private_data
;
2507 unsigned long flags
;
2510 file
->private_data
= NULL
;
2511 spin_lock_irqsave(&all_pvt_lock
, flags
);
2512 list_del(&pp
->list
);
2513 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2515 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2516 if (pp
->backlight_locker
)
2517 pmac_backlight_enable();
2526 pmu_ioctl(struct inode
* inode
, struct file
*filp
,
2527 u_int cmd
, u_long arg
)
2529 __u32 __user
*argp
= (__u32 __user
*)arg
;
2530 int error
= -EINVAL
;
2533 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2535 if (!capable(CAP_SYS_ADMIN
))
2537 if (sleep_in_progress
)
2539 sleep_in_progress
= 1;
2541 case PMU_OHARE_BASED
:
2542 error
= powerbook_sleep_3400();
2544 case PMU_HEATHROW_BASED
:
2545 case PMU_PADDINGTON_BASED
:
2546 error
= powerbook_sleep_grackle();
2548 case PMU_KEYLARGO_BASED
:
2549 error
= powerbook_sleep_Core99();
2554 sleep_in_progress
= 0;
2556 case PMU_IOC_CAN_SLEEP
:
2557 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0)
2558 return put_user(0, argp
);
2560 return put_user(1, argp
);
2561 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2563 #ifdef CONFIG_PMAC_BACKLIGHT_LEGACY
2564 /* Compatibility ioctl's for backlight */
2565 case PMU_IOC_GET_BACKLIGHT
:
2569 if (sleep_in_progress
)
2572 brightness
= pmac_backlight_get_legacy_brightness();
2576 return put_user(brightness
, argp
);
2579 case PMU_IOC_SET_BACKLIGHT
:
2583 if (sleep_in_progress
)
2586 error
= get_user(brightness
, argp
);
2590 return pmac_backlight_set_legacy_brightness(brightness
);
2592 #ifdef CONFIG_INPUT_ADBHID
2593 case PMU_IOC_GRAB_BACKLIGHT
: {
2594 struct pmu_private
*pp
= filp
->private_data
;
2596 if (pp
->backlight_locker
)
2599 pp
->backlight_locker
= 1;
2600 pmac_backlight_disable();
2604 #endif /* CONFIG_INPUT_ADBHID */
2605 #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */
2607 case PMU_IOC_GET_MODEL
:
2608 return put_user(pmu_kind
, argp
);
2609 case PMU_IOC_HAS_ADB
:
2610 return put_user(pmu_has_adb
, argp
);
2615 static const struct file_operations pmu_device_fops
= {
2621 .release
= pmu_release
,
2624 static struct miscdevice pmu_device
= {
2625 PMU_MINOR
, "pmu", &pmu_device_fops
2628 static int pmu_device_init(void)
2632 if (misc_register(&pmu_device
) < 0)
2633 printk(KERN_ERR
"via-pmu: cannot register misc device.\n");
2636 device_initcall(pmu_device_init
);
2641 polled_handshake(volatile unsigned char __iomem
*via
)
2643 via
[B
] &= ~TREQ
; eieio();
2644 while ((via
[B
] & TACK
) != 0)
2646 via
[B
] |= TREQ
; eieio();
2647 while ((via
[B
] & TACK
) == 0)
2652 polled_send_byte(volatile unsigned char __iomem
*via
, int x
)
2654 via
[ACR
] |= SR_OUT
| SR_EXT
; eieio();
2655 via
[SR
] = x
; eieio();
2656 polled_handshake(via
);
2660 polled_recv_byte(volatile unsigned char __iomem
*via
)
2664 via
[ACR
] = (via
[ACR
] & ~SR_OUT
) | SR_EXT
; eieio();
2665 x
= via
[SR
]; eieio();
2666 polled_handshake(via
);
2667 x
= via
[SR
]; eieio();
2672 pmu_polled_request(struct adb_request
*req
)
2674 unsigned long flags
;
2676 volatile unsigned char __iomem
*v
= via
;
2680 l
= pmu_data_len
[c
][0];
2681 if (l
>= 0 && req
->nbytes
!= l
+ 1)
2684 local_irq_save(flags
);
2685 while (pmu_state
!= idle
)
2688 while ((via
[B
] & TACK
) == 0)
2690 polled_send_byte(v
, c
);
2692 l
= req
->nbytes
- 1;
2693 polled_send_byte(v
, l
);
2695 for (i
= 1; i
<= l
; ++i
)
2696 polled_send_byte(v
, req
->data
[i
]);
2698 l
= pmu_data_len
[c
][1];
2700 l
= polled_recv_byte(v
);
2701 for (i
= 0; i
< l
; ++i
)
2702 req
->reply
[i
+ req
->reply_len
] = polled_recv_byte(v
);
2707 local_irq_restore(flags
);
2710 #endif /* DEBUG_SLEEP */
2713 /* FIXME: This is a temporary set of callbacks to enable us
2714 * to do suspend-to-disk.
2717 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2719 int pmu_sys_suspended
;
2721 static int pmu_sys_suspend(struct sys_device
*sysdev
, pm_message_t state
)
2723 if (state
.event
!= PM_EVENT_SUSPEND
|| pmu_sys_suspended
)
2726 /* Suspend PMU event interrupts */
2729 pmu_sys_suspended
= 1;
2733 static int pmu_sys_resume(struct sys_device
*sysdev
)
2735 struct adb_request req
;
2737 if (!pmu_sys_suspended
)
2740 /* Tell PMU we are ready */
2741 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2742 pmu_wait_complete(&req
);
2744 /* Resume PMU event interrupts */
2747 pmu_sys_suspended
= 0;
2752 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2754 static struct sysdev_class pmu_sysclass
= {
2755 set_kset_name("pmu"),
2758 static struct sys_device device_pmu
= {
2759 .cls
= &pmu_sysclass
,
2762 static struct sysdev_driver driver_pmu
= {
2763 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2764 .suspend
= &pmu_sys_suspend
,
2765 .resume
= &pmu_sys_resume
,
2766 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */
2769 static int __init
init_pmu_sysfs(void)
2773 rc
= sysdev_class_register(&pmu_sysclass
);
2775 printk(KERN_ERR
"Failed registering PMU sys class\n");
2778 rc
= sysdev_register(&device_pmu
);
2780 printk(KERN_ERR
"Failed registering PMU sys device\n");
2783 rc
= sysdev_driver_register(&pmu_sysclass
, &driver_pmu
);
2785 printk(KERN_ERR
"Failed registering PMU sys driver\n");
2791 subsys_initcall(init_pmu_sysfs
);
2793 EXPORT_SYMBOL(pmu_request
);
2794 EXPORT_SYMBOL(pmu_queue_request
);
2795 EXPORT_SYMBOL(pmu_poll
);
2796 EXPORT_SYMBOL(pmu_poll_adb
);
2797 EXPORT_SYMBOL(pmu_wait_complete
);
2798 EXPORT_SYMBOL(pmu_suspend
);
2799 EXPORT_SYMBOL(pmu_resume
);
2800 EXPORT_SYMBOL(pmu_unlock
);
2801 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
2802 EXPORT_SYMBOL(pmu_enable_irled
);
2803 EXPORT_SYMBOL(pmu_battery_count
);
2804 EXPORT_SYMBOL(pmu_batteries
);
2805 EXPORT_SYMBOL(pmu_power_flags
);
2806 #endif /* CONFIG_PM_SLEEP && CONFIG_PPC32 */