2 * Device driver for the via-pmu on Apple Powermacs.
4 * The VIA (versatile interface adapter) interfaces to the PMU,
5 * a 6805 microprocessor core whose primary function is to control
6 * battery charging and system power on the PowerBook 3400 and 2400.
7 * The PMU also controls the ADB (Apple Desktop Bus) which connects
8 * to the keyboard and mouse, as well as the non-volatile RAM
9 * and the RTC (real time clock) chip.
11 * Copyright (C) 1998 Paul Mackerras and Fabio Riccardi.
12 * Copyright (C) 2001-2002 Benjamin Herrenschmidt
14 * THIS DRIVER IS BECOMING A TOTAL MESS !
15 * - Cleanup atomically disabling reply to PMU events after
16 * a sleep or a freq. switch
17 * - Move sleep code out of here to pmac_pm, merge into new
18 * common PM infrastructure
19 * - Move backlight code out as well
20 * - Save/Restore PCI space properly
24 #include <linux/config.h>
25 #include <linux/types.h>
26 #include <linux/errno.h>
27 #include <linux/kernel.h>
28 #include <linux/delay.h>
29 #include <linux/sched.h>
30 #include <linux/miscdevice.h>
31 #include <linux/blkdev.h>
32 #include <linux/pci.h>
33 #include <linux/slab.h>
34 #include <linux/poll.h>
35 #include <linux/adb.h>
36 #include <linux/pmu.h>
37 #include <linux/cuda.h>
38 #include <linux/smp_lock.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
42 #include <linux/proc_fs.h>
43 #include <linux/init.h>
44 #include <linux/interrupt.h>
45 #include <linux/device.h>
46 #include <linux/sysdev.h>
47 #include <linux/suspend.h>
48 #include <linux/syscalls.h>
49 #include <linux/cpu.h>
51 #include <asm/machdep.h>
53 #include <asm/pgtable.h>
54 #include <asm/system.h>
55 #include <asm/sections.h>
57 #include <asm/pmac_feature.h>
58 #include <asm/uaccess.h>
59 #include <asm/mmu_context.h>
60 #include <asm/cputable.h>
62 #ifdef CONFIG_PMAC_BACKLIGHT
63 #include <asm/backlight.h>
67 #include <asm/open_pic.h>
70 /* Some compile options */
71 #undef SUSPEND_USES_PMU
73 #undef HACKED_PCI_SAVE
75 /* Misc minor number allocated for /dev/pmu */
78 /* How many iterations between battery polls */
79 #define BATTERY_POLLING_COUNT 2
81 static volatile unsigned char __iomem
*via
;
83 /* VIA registers - spaced 0x200 bytes apart */
84 #define RS 0x200 /* skip between registers */
85 #define B 0 /* B-side data */
86 #define A RS /* A-side data */
87 #define DIRB (2*RS) /* B-side direction (1=output) */
88 #define DIRA (3*RS) /* A-side direction (1=output) */
89 #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */
90 #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */
91 #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */
92 #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */
93 #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */
94 #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */
95 #define SR (10*RS) /* Shift register */
96 #define ACR (11*RS) /* Auxiliary control register */
97 #define PCR (12*RS) /* Peripheral control register */
98 #define IFR (13*RS) /* Interrupt flag register */
99 #define IER (14*RS) /* Interrupt enable register */
100 #define ANH (15*RS) /* A-side data, no handshake */
102 /* Bits in B data register: both active low */
103 #define TACK 0x08 /* Transfer acknowledge (input) */
104 #define TREQ 0x10 /* Transfer request (output) */
107 #define SR_CTRL 0x1c /* Shift register control bits */
108 #define SR_EXT 0x0c /* Shift on external clock */
109 #define SR_OUT 0x10 /* Shift out if 1 */
111 /* Bits in IFR and IER */
112 #define IER_SET 0x80 /* set bits in IER */
113 #define IER_CLR 0 /* clear bits in IER */
114 #define SR_INT 0x04 /* Shift register full/empty */
116 #define CB1_INT 0x10 /* transition on CB1 input */
118 static volatile enum pmu_state
{
127 static volatile enum int_data_state
{
132 } int_data_state
[2] = { int_data_empty
, int_data_empty
};
134 static struct adb_request
*current_req
;
135 static struct adb_request
*last_req
;
136 static struct adb_request
*req_awaiting_reply
;
137 static unsigned char interrupt_data
[2][32];
138 static int interrupt_data_len
[2];
139 static int int_data_last
;
140 static unsigned char *reply_ptr
;
141 static int data_index
;
143 static volatile int adb_int_pending
;
144 static volatile int disable_poll
;
145 static struct adb_request bright_req_1
, bright_req_2
;
146 static struct device_node
*vias
;
147 static int pmu_kind
= PMU_UNKNOWN
;
148 static int pmu_fully_inited
= 0;
149 static int pmu_has_adb
;
150 static unsigned char __iomem
*gpio_reg
= NULL
;
151 static int gpio_irq
= -1;
152 static int gpio_irq_enabled
= -1;
153 static volatile int pmu_suspended
= 0;
154 static spinlock_t pmu_lock
;
155 static u8 pmu_intr_mask
;
156 static int pmu_version
;
157 static int drop_interrupts
;
158 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
159 static int option_lid_wakeup
= 1;
160 static int sleep_in_progress
;
161 #endif /* CONFIG_PM && CONFIG_PPC32 */
162 static unsigned long async_req_locks
;
163 static unsigned int pmu_irq_stats
[11];
165 static struct proc_dir_entry
*proc_pmu_root
;
166 static struct proc_dir_entry
*proc_pmu_info
;
167 static struct proc_dir_entry
*proc_pmu_irqstats
;
168 static struct proc_dir_entry
*proc_pmu_options
;
169 static int option_server_mode
;
171 int pmu_battery_count
;
173 unsigned int pmu_power_flags
;
174 struct pmu_battery_info pmu_batteries
[PMU_MAX_BATTERIES
];
175 static int query_batt_timer
= BATTERY_POLLING_COUNT
;
176 static struct adb_request batt_req
;
177 static struct proc_dir_entry
*proc_pmu_batt
[PMU_MAX_BATTERIES
];
179 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
180 extern int disable_kernel_backlight
;
181 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
185 struct notifier_block
*sleep_notifier_list
;
188 static int adb_dev_map
= 0;
189 static int pmu_adb_flags
;
191 static int pmu_probe(void);
192 static int pmu_init(void);
193 static int pmu_send_request(struct adb_request
*req
, int sync
);
194 static int pmu_adb_autopoll(int devs
);
195 static int pmu_adb_reset_bus(void);
196 #endif /* CONFIG_ADB */
198 static int init_pmu(void);
199 static int pmu_queue_request(struct adb_request
*req
);
200 static void pmu_start(void);
201 static irqreturn_t
via_pmu_interrupt(int irq
, void *arg
, struct pt_regs
*regs
);
202 static irqreturn_t
gpio1_interrupt(int irq
, void *arg
, struct pt_regs
*regs
);
203 static int proc_get_info(char *page
, char **start
, off_t off
,
204 int count
, int *eof
, void *data
);
205 static int proc_get_irqstats(char *page
, char **start
, off_t off
,
206 int count
, int *eof
, void *data
);
207 #ifdef CONFIG_PMAC_BACKLIGHT
208 static int pmu_set_backlight_level(int level
, void* data
);
209 static int pmu_set_backlight_enable(int on
, int level
, void* data
);
210 #endif /* CONFIG_PMAC_BACKLIGHT */
211 static void pmu_pass_intr(unsigned char *data
, int len
);
212 static int proc_get_batt(char *page
, char **start
, off_t off
,
213 int count
, int *eof
, void *data
);
214 static int proc_read_options(char *page
, char **start
, off_t off
,
215 int count
, int *eof
, void *data
);
216 static int proc_write_options(struct file
*file
, const char __user
*buffer
,
217 unsigned long count
, void *data
);
220 struct adb_driver via_pmu_driver
= {
229 #endif /* CONFIG_ADB */
231 extern void low_sleep_handler(void);
232 extern void enable_kernel_altivec(void);
233 extern void enable_kernel_fp(void);
236 int pmu_polled_request(struct adb_request
*req
);
237 int pmu_wink(struct adb_request
*req
);
241 * This table indicates for each PMU opcode:
242 * - the number of data bytes to be sent with the command, or -1
243 * if a length byte should be sent,
244 * - the number of response bytes which the PMU will return, or
245 * -1 if it will send a length byte.
247 static const s8 pmu_data_len
[256][2] = {
248 /* 0 1 2 3 4 5 6 7 */
249 /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
250 /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
251 /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
252 /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0},
253 /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
254 /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1},
255 /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
256 /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0},
257 /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
258 /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1},
259 /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
260 /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},
261 /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
262 /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1},
263 /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
264 /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1},
265 /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
266 /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
267 /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
268 /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
269 /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
270 /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
271 /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
272 /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
273 /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
274 /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
275 /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
276 /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1},
277 /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
278 /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0},
279 /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
280 /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},
283 static char *pbook_type
[] = {
285 "PowerBook 2400/3400/3500(G3)",
286 "PowerBook G3 Series",
291 #ifdef CONFIG_PMAC_BACKLIGHT
292 static struct backlight_controller pmu_backlight_controller
= {
293 pmu_set_backlight_enable
,
294 pmu_set_backlight_level
296 #endif /* CONFIG_PMAC_BACKLIGHT */
303 vias
= find_devices("via-pmu");
307 printk(KERN_WARNING
"Warning: only using 1st via-pmu\n");
309 if (vias
->n_addrs
< 1 || vias
->n_intrs
< 1) {
310 printk(KERN_ERR
"via-pmu: %d addresses, %d interrupts!\n",
311 vias
->n_addrs
, vias
->n_intrs
);
312 if (vias
->n_addrs
< 1 || vias
->n_intrs
< 1)
316 spin_lock_init(&pmu_lock
);
320 pmu_intr_mask
= PMU_INT_PCEJECT
|
325 if (vias
->parent
->name
&& ((strcmp(vias
->parent
->name
, "ohare") == 0)
326 || device_is_compatible(vias
->parent
, "ohare")))
327 pmu_kind
= PMU_OHARE_BASED
;
328 else if (device_is_compatible(vias
->parent
, "paddington"))
329 pmu_kind
= PMU_PADDINGTON_BASED
;
330 else if (device_is_compatible(vias
->parent
, "heathrow"))
331 pmu_kind
= PMU_HEATHROW_BASED
;
332 else if (device_is_compatible(vias
->parent
, "Keylargo")
333 || device_is_compatible(vias
->parent
, "K2-Keylargo")) {
334 struct device_node
*gpio
, *gpiop
;
336 pmu_kind
= PMU_KEYLARGO_BASED
;
337 pmu_has_adb
= (find_type_devices("adb") != NULL
);
338 pmu_intr_mask
= PMU_INT_PCEJECT
|
344 gpiop
= find_devices("gpio");
345 if (gpiop
&& gpiop
->n_addrs
) {
346 gpio_reg
= ioremap(gpiop
->addrs
->address
, 0x10);
347 gpio
= find_devices("extint-gpio1");
349 gpio
= find_devices("pmu-interrupt");
350 if (gpio
&& gpio
->parent
== gpiop
&& gpio
->n_intrs
)
351 gpio_irq
= gpio
->intrs
[0].line
;
354 pmu_kind
= PMU_UNKNOWN
;
356 via
= ioremap(vias
->addrs
->address
, 0x2000);
358 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
359 out_8(&via
[IFR
], 0x7f); /* clear IFR */
368 printk(KERN_INFO
"PMU driver %d initialized for %s, firmware: %02x\n",
369 PMU_DRIVER_VERSION
, pbook_type
[pmu_kind
], pmu_version
);
371 sys_ctrler
= SYS_CTRLER_PMU
;
380 return vias
== NULL
? -ENODEV
: 0;
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)
404 bright_req_1
.complete
= 1;
405 bright_req_2
.complete
= 1;
406 batt_req
.complete
= 1;
408 #if defined(CONFIG_PPC32) && !defined(CONFIG_PPC_MERGE)
409 if (pmu_kind
== PMU_KEYLARGO_BASED
)
410 openpic_set_irq_priority(vias
->intrs
[0].line
,
411 OPENPIC_PRIORITY_DEFAULT
+ 1);
414 if (request_irq(vias
->intrs
[0].line
, via_pmu_interrupt
, 0, "VIA-PMU",
416 printk(KERN_ERR
"VIA-PMU: can't get irq %d\n",
417 vias
->intrs
[0].line
);
421 if (pmu_kind
== PMU_KEYLARGO_BASED
&& gpio_irq
!= -1) {
422 if (request_irq(gpio_irq
, gpio1_interrupt
, 0, "GPIO1 ADB", (void *)0))
423 printk(KERN_ERR
"pmu: can't get irq %d (GPIO1)\n", gpio_irq
);
424 gpio_irq_enabled
= 1;
427 /* Enable interrupts */
428 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
430 pmu_fully_inited
= 1;
432 /* Make sure PMU settle down before continuing. This is _very_ important
433 * since the IDE probe may shut interrupts down for quite a bit of time. If
434 * a PMU communication is pending while this happens, the PMU may timeout
435 * Not that on Core99 machines, the PMU keeps sending us environement
436 * messages, we should find a way to either fix IDE or make it call
437 * pmu_suspend() before masking interrupts. This can also happens while
438 * scolling with some fbdevs.
442 } while (pmu_state
!= idle
);
447 arch_initcall(via_pmu_start
);
450 * This has to be done after pci_init, which is a subsys_initcall.
452 static int __init
via_pmu_dev_init(void)
458 request_OF_resource(vias
, 0, NULL
);
460 #ifdef CONFIG_PMAC_BACKLIGHT
461 /* Enable backlight */
462 register_backlight_controller(&pmu_backlight_controller
, NULL
, "pmu");
463 #endif /* CONFIG_PMAC_BACKLIGHT */
466 if (machine_is_compatible("AAPL,3400/2400") ||
467 machine_is_compatible("AAPL,3500")) {
468 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
469 NULL
, PMAC_MB_INFO_MODEL
, 0);
470 pmu_battery_count
= 1;
471 if (mb
== PMAC_TYPE_COMET
)
472 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_COMET
;
474 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_HOOPER
;
475 } else if (machine_is_compatible("AAPL,PowerBook1998") ||
476 machine_is_compatible("PowerBook1,1")) {
477 pmu_battery_count
= 2;
478 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
479 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
481 struct device_node
* prim
= find_devices("power-mgt");
482 u32
*prim_info
= NULL
;
484 prim_info
= (u32
*)get_property(prim
, "prim-info", NULL
);
486 /* Other stuffs here yet unknown */
487 pmu_battery_count
= (prim_info
[6] >> 16) & 0xff;
488 pmu_batteries
[0].flags
|= PMU_BATT_TYPE_SMART
;
489 if (pmu_battery_count
> 1)
490 pmu_batteries
[1].flags
|= PMU_BATT_TYPE_SMART
;
493 #endif /* CONFIG_PPC32 */
495 /* Create /proc/pmu */
496 proc_pmu_root
= proc_mkdir("pmu", NULL
);
500 for (i
=0; i
<pmu_battery_count
; i
++) {
502 sprintf(title
, "battery_%ld", i
);
503 proc_pmu_batt
[i
] = create_proc_read_entry(title
, 0, proc_pmu_root
,
504 proc_get_batt
, (void *)i
);
507 proc_pmu_info
= create_proc_read_entry("info", 0, proc_pmu_root
,
508 proc_get_info
, NULL
);
509 proc_pmu_irqstats
= create_proc_read_entry("interrupts", 0, proc_pmu_root
,
510 proc_get_irqstats
, NULL
);
511 proc_pmu_options
= create_proc_entry("options", 0600, proc_pmu_root
);
512 if (proc_pmu_options
) {
513 proc_pmu_options
->nlink
= 1;
514 proc_pmu_options
->read_proc
= proc_read_options
;
515 proc_pmu_options
->write_proc
= proc_write_options
;
521 device_initcall(via_pmu_dev_init
);
527 struct adb_request req
;
529 out_8(&via
[B
], via
[B
] | TREQ
); /* negate TREQ */
530 out_8(&via
[DIRB
], (via
[DIRB
] | TREQ
) & ~TACK
); /* TACK in, TREQ out */
532 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
534 while (!req
.complete
) {
536 printk(KERN_ERR
"init_pmu: no response from PMU\n");
543 /* ack all pending interrupts */
545 interrupt_data
[0][0] = 1;
546 while (interrupt_data
[0][0] || pmu_state
!= idle
) {
548 printk(KERN_ERR
"init_pmu: timed out acking intrs\n");
551 if (pmu_state
== idle
)
553 via_pmu_interrupt(0, NULL
, NULL
);
557 /* Tell PMU we are ready. */
558 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
559 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
560 while (!req
.complete
)
564 /* Read PMU version */
565 pmu_request(&req
, NULL
, 1, PMU_GET_VERSION
);
566 pmu_wait_complete(&req
);
567 if (req
.reply_len
> 0)
568 pmu_version
= req
.reply
[0];
570 /* Read server mode setting */
571 if (pmu_kind
== PMU_KEYLARGO_BASED
) {
572 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
,
573 PMU_PWR_GET_POWERUP_EVENTS
);
574 pmu_wait_complete(&req
);
575 if (req
.reply_len
== 2) {
576 if (req
.reply
[1] & PMU_PWR_WAKEUP_AC_INSERT
)
577 option_server_mode
= 1;
578 printk(KERN_INFO
"via-pmu: Server Mode is %s\n",
579 option_server_mode
? "enabled" : "disabled");
591 static void pmu_set_server_mode(int server_mode
)
593 struct adb_request req
;
595 if (pmu_kind
!= PMU_KEYLARGO_BASED
)
598 option_server_mode
= server_mode
;
599 pmu_request(&req
, NULL
, 2, PMU_POWER_EVENTS
, PMU_PWR_GET_POWERUP_EVENTS
);
600 pmu_wait_complete(&req
);
601 if (req
.reply_len
< 2)
604 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
605 PMU_PWR_SET_POWERUP_EVENTS
,
606 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
608 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
,
609 PMU_PWR_CLR_POWERUP_EVENTS
,
610 req
.reply
[0], PMU_PWR_WAKEUP_AC_INSERT
);
611 pmu_wait_complete(&req
);
614 /* This new version of the code for 2400/3400/3500 powerbooks
615 * is inspired from the implementation in gkrellm-pmu
618 done_battery_state_ohare(struct adb_request
* req
)
622 * 0x01 : AC indicator
624 * 0x04 : battery exist
627 * 0x20 : full charged
628 * 0x40 : pcharge reset
629 * 0x80 : battery exist
631 * [1][2] : battery voltage
632 * [3] : CPU temperature
633 * [4] : battery temperature
638 unsigned int bat_flags
= PMU_BATT_TYPE_HOOPER
;
639 long pcharge
, charge
, vb
, vmax
, lmax
;
640 long vmax_charging
, vmax_charged
;
641 long amperage
, voltage
, time
, max
;
642 int mb
= pmac_call_feature(PMAC_FTR_GET_MB_INFO
,
643 NULL
, PMAC_MB_INFO_MODEL
, 0);
645 if (req
->reply
[0] & 0x01)
646 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
648 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
650 if (mb
== PMAC_TYPE_COMET
) {
661 /* If battery installed */
662 if (req
->reply
[0] & 0x04) {
663 bat_flags
|= PMU_BATT_PRESENT
;
664 if (req
->reply
[0] & 0x02)
665 bat_flags
|= PMU_BATT_CHARGING
;
666 vb
= (req
->reply
[1] << 8) | req
->reply
[2];
667 voltage
= (vb
* 265 + 72665) / 10;
668 amperage
= req
->reply
[5];
669 if ((req
->reply
[0] & 0x01) == 0) {
671 vb
+= ((amperage
- 200) * 15)/100;
672 } else if (req
->reply
[0] & 0x02) {
673 vb
= (vb
* 97) / 100;
674 vmax
= vmax_charging
;
676 charge
= (100 * vb
) / vmax
;
677 if (req
->reply
[0] & 0x40) {
678 pcharge
= (req
->reply
[6] << 8) + req
->reply
[7];
682 pcharge
= 100 - pcharge
/ lmax
;
683 if (pcharge
< charge
)
687 time
= (charge
* 16440) / amperage
;
691 amperage
= -amperage
;
693 charge
= max
= amperage
= voltage
= time
= 0;
695 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
696 pmu_batteries
[pmu_cur_battery
].charge
= charge
;
697 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
698 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
699 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
700 pmu_batteries
[pmu_cur_battery
].time_remaining
= time
;
702 clear_bit(0, &async_req_locks
);
706 done_battery_state_smart(struct adb_request
* req
)
709 * [0] : format of this structure (known: 3,4,5)
722 * [4][5] : max charge
727 unsigned int bat_flags
= PMU_BATT_TYPE_SMART
;
729 unsigned int capa
, max
, voltage
;
731 if (req
->reply
[1] & 0x01)
732 pmu_power_flags
|= PMU_PWR_AC_PRESENT
;
734 pmu_power_flags
&= ~PMU_PWR_AC_PRESENT
;
737 capa
= max
= amperage
= voltage
= 0;
739 if (req
->reply
[1] & 0x04) {
740 bat_flags
|= PMU_BATT_PRESENT
;
741 switch(req
->reply
[0]) {
743 case 4: capa
= req
->reply
[2];
745 amperage
= *((signed char *)&req
->reply
[4]);
746 voltage
= req
->reply
[5];
748 case 5: capa
= (req
->reply
[2] << 8) | req
->reply
[3];
749 max
= (req
->reply
[4] << 8) | req
->reply
[5];
750 amperage
= *((signed short *)&req
->reply
[6]);
751 voltage
= (req
->reply
[8] << 8) | req
->reply
[9];
754 printk(KERN_WARNING
"pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n",
755 req
->reply_len
, req
->reply
[0], req
->reply
[1], req
->reply
[2], req
->reply
[3]);
760 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
761 bat_flags
|= PMU_BATT_CHARGING
;
763 pmu_batteries
[pmu_cur_battery
].flags
= bat_flags
;
764 pmu_batteries
[pmu_cur_battery
].charge
= capa
;
765 pmu_batteries
[pmu_cur_battery
].max_charge
= max
;
766 pmu_batteries
[pmu_cur_battery
].amperage
= amperage
;
767 pmu_batteries
[pmu_cur_battery
].voltage
= voltage
;
769 if ((req
->reply
[1] & 0x01) && (amperage
> 0))
770 pmu_batteries
[pmu_cur_battery
].time_remaining
771 = ((max
-capa
) * 3600) / amperage
;
773 pmu_batteries
[pmu_cur_battery
].time_remaining
774 = (capa
* 3600) / (-amperage
);
776 pmu_batteries
[pmu_cur_battery
].time_remaining
= 0;
778 pmu_cur_battery
= (pmu_cur_battery
+ 1) % pmu_battery_count
;
780 clear_bit(0, &async_req_locks
);
784 query_battery_state(void)
786 if (test_and_set_bit(0, &async_req_locks
))
788 if (pmu_kind
== PMU_OHARE_BASED
)
789 pmu_request(&batt_req
, done_battery_state_ohare
,
790 1, PMU_BATTERY_STATE
);
792 pmu_request(&batt_req
, done_battery_state_smart
,
793 2, PMU_SMART_BATTERY_STATE
, pmu_cur_battery
+1);
797 proc_get_info(char *page
, char **start
, off_t off
,
798 int count
, int *eof
, void *data
)
802 p
+= sprintf(p
, "PMU driver version : %d\n", PMU_DRIVER_VERSION
);
803 p
+= sprintf(p
, "PMU firmware version : %02x\n", pmu_version
);
804 p
+= sprintf(p
, "AC Power : %d\n",
805 ((pmu_power_flags
& PMU_PWR_AC_PRESENT
) != 0));
806 p
+= sprintf(p
, "Battery count : %d\n", pmu_battery_count
);
812 proc_get_irqstats(char *page
, char **start
, off_t off
,
813 int count
, int *eof
, void *data
)
817 static const char *irq_names
[] = {
818 "Total CB1 triggered events",
819 "Total GPIO1 triggered events",
820 "PC-Card eject button",
821 "Sound/Brightness button",
823 "Battery state change",
824 "Environment interrupt",
826 "Ghost interrupt (zero len)",
827 "Empty interrupt (empty mask)",
831 for (i
=0; i
<11; i
++) {
832 p
+= sprintf(p
, " %2u: %10u (%s)\n",
833 i
, pmu_irq_stats
[i
], irq_names
[i
]);
839 proc_get_batt(char *page
, char **start
, off_t off
,
840 int count
, int *eof
, void *data
)
842 long batnum
= (long)data
;
845 p
+= sprintf(p
, "\n");
846 p
+= sprintf(p
, "flags : %08x\n",
847 pmu_batteries
[batnum
].flags
);
848 p
+= sprintf(p
, "charge : %d\n",
849 pmu_batteries
[batnum
].charge
);
850 p
+= sprintf(p
, "max_charge : %d\n",
851 pmu_batteries
[batnum
].max_charge
);
852 p
+= sprintf(p
, "current : %d\n",
853 pmu_batteries
[batnum
].amperage
);
854 p
+= sprintf(p
, "voltage : %d\n",
855 pmu_batteries
[batnum
].voltage
);
856 p
+= sprintf(p
, "time rem. : %d\n",
857 pmu_batteries
[batnum
].time_remaining
);
863 proc_read_options(char *page
, char **start
, off_t off
,
864 int count
, int *eof
, void *data
)
868 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
869 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
870 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
871 p
+= sprintf(p
, "lid_wakeup=%d\n", option_lid_wakeup
);
873 if (pmu_kind
== PMU_KEYLARGO_BASED
)
874 p
+= sprintf(p
, "server_mode=%d\n", option_server_mode
);
880 proc_write_options(struct file
*file
, const char __user
*buffer
,
881 unsigned long count
, void *data
)
885 unsigned long fcount
= count
;
891 if (copy_from_user(tmp
, buffer
, count
))
899 while(*val
&& (*val
!= '=')) {
909 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
910 if (pmu_kind
== PMU_KEYLARGO_BASED
&&
911 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) >= 0)
912 if (!strcmp(label
, "lid_wakeup"))
913 option_lid_wakeup
= ((*val
) == '1');
915 if (pmu_kind
== PMU_KEYLARGO_BASED
&& !strcmp(label
, "server_mode")) {
917 new_value
= ((*val
) == '1');
918 if (new_value
!= option_server_mode
)
919 pmu_set_server_mode(new_value
);
925 /* Send an ADB command */
927 pmu_send_request(struct adb_request
*req
, int sync
)
931 if ((vias
== NULL
) || (!pmu_fully_inited
)) {
938 switch (req
->data
[0]) {
940 for (i
= 0; i
< req
->nbytes
- 1; ++i
)
941 req
->data
[i
] = req
->data
[i
+1];
943 if (pmu_data_len
[req
->data
[0]][1] != 0) {
944 req
->reply
[0] = ADB_RET_OK
;
948 ret
= pmu_queue_request(req
);
951 switch (req
->data
[1]) {
953 if (req
->nbytes
!= 2)
955 req
->data
[0] = PMU_READ_RTC
;
958 req
->reply
[0] = CUDA_PACKET
;
960 req
->reply
[2] = CUDA_GET_TIME
;
961 ret
= pmu_queue_request(req
);
964 if (req
->nbytes
!= 6)
966 req
->data
[0] = PMU_SET_RTC
;
968 for (i
= 1; i
<= 4; ++i
)
969 req
->data
[i
] = req
->data
[i
+1];
971 req
->reply
[0] = CUDA_PACKET
;
973 req
->reply
[2] = CUDA_SET_TIME
;
974 ret
= pmu_queue_request(req
);
981 for (i
= req
->nbytes
- 1; i
> 1; --i
)
982 req
->data
[i
+2] = req
->data
[i
];
983 req
->data
[3] = req
->nbytes
- 2;
984 req
->data
[2] = pmu_adb_flags
;
985 /*req->data[1] = req->data[1];*/
986 req
->data
[0] = PMU_ADB_CMD
;
988 req
->reply_expected
= 1;
990 ret
= pmu_queue_request(req
);
999 while (!req
->complete
)
1005 /* Enable/disable autopolling */
1007 pmu_adb_autopoll(int devs
)
1009 struct adb_request req
;
1011 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1016 pmu_request(&req
, NULL
, 5, PMU_ADB_CMD
, 0, 0x86,
1017 adb_dev_map
>> 8, adb_dev_map
);
1020 pmu_request(&req
, NULL
, 1, PMU_ADB_POLL_OFF
);
1023 while (!req
.complete
)
1028 /* Reset the ADB bus */
1030 pmu_adb_reset_bus(void)
1032 struct adb_request req
;
1033 int save_autopoll
= adb_dev_map
;
1035 if ((vias
== NULL
) || (!pmu_fully_inited
) || !pmu_has_adb
)
1038 /* anyone got a better idea?? */
1039 pmu_adb_autopoll(0);
1043 req
.data
[0] = PMU_ADB_CMD
;
1045 req
.data
[2] = ADB_BUSRESET
;
1049 req
.reply_expected
= 1;
1050 if (pmu_queue_request(&req
) != 0) {
1051 printk(KERN_ERR
"pmu_adb_reset_bus: pmu_queue_request failed\n");
1054 pmu_wait_complete(&req
);
1056 if (save_autopoll
!= 0)
1057 pmu_adb_autopoll(save_autopoll
);
1061 #endif /* CONFIG_ADB */
1063 /* Construct and send a pmu request */
1065 pmu_request(struct adb_request
*req
, void (*done
)(struct adb_request
*),
1074 if (nbytes
< 0 || nbytes
> 32) {
1075 printk(KERN_ERR
"pmu_request: bad nbytes (%d)\n", nbytes
);
1079 req
->nbytes
= nbytes
;
1081 va_start(list
, nbytes
);
1082 for (i
= 0; i
< nbytes
; ++i
)
1083 req
->data
[i
] = va_arg(list
, int);
1086 req
->reply_expected
= 0;
1087 return pmu_queue_request(req
);
1091 pmu_queue_request(struct adb_request
*req
)
1093 unsigned long flags
;
1100 if (req
->nbytes
<= 0) {
1104 nsend
= pmu_data_len
[req
->data
[0]][0];
1105 if (nsend
>= 0 && req
->nbytes
!= nsend
+ 1) {
1114 spin_lock_irqsave(&pmu_lock
, flags
);
1115 if (current_req
!= 0) {
1116 last_req
->next
= req
;
1121 if (pmu_state
== idle
)
1124 spin_unlock_irqrestore(&pmu_lock
, flags
);
1132 /* Sightly increased the delay, I had one occurrence of the message
1136 while ((in_8(&via
[B
]) & TACK
) == 0) {
1137 if (--timeout
< 0) {
1138 printk(KERN_ERR
"PMU not responding (!ack)\n");
1145 /* New PMU seems to be very sensitive to those timings, so we make sure
1146 * PCI is flushed immediately */
1150 volatile unsigned char __iomem
*v
= via
;
1152 out_8(&v
[ACR
], in_8(&v
[ACR
]) | SR_OUT
| SR_EXT
);
1154 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
); /* assert TREQ */
1161 volatile unsigned char __iomem
*v
= via
;
1163 out_8(&v
[ACR
], (in_8(&v
[ACR
]) & ~SR_OUT
) | SR_EXT
);
1164 in_8(&v
[SR
]); /* resets SR */
1165 out_8(&v
[B
], in_8(&v
[B
]) & ~TREQ
);
1170 pmu_done(struct adb_request
*req
)
1172 void (*done
)(struct adb_request
*) = req
->done
;
1175 /* Here, we assume that if the request has a done member, the
1176 * struct request will survive to setting req->complete to 1
1185 struct adb_request
*req
;
1187 /* assert pmu_state == idle */
1188 /* get the packet to send */
1190 if (req
== 0 || pmu_state
!= idle
1191 || (/*req->reply_expected && */req_awaiting_reply
))
1194 pmu_state
= sending
;
1196 data_len
= pmu_data_len
[req
->data
[0]][0];
1198 /* Sounds safer to make sure ACK is high before writing. This helped
1199 * kill a problem with ADB and some iBooks
1202 /* set the shift register to shift out and send a byte */
1203 send_byte(req
->data
[0]);
1213 via_pmu_interrupt(0, NULL
, NULL
);
1223 /* Kicks ADB read when PMU is suspended */
1224 adb_int_pending
= 1;
1226 via_pmu_interrupt(0, NULL
, NULL
);
1227 } while (pmu_suspended
&& (adb_int_pending
|| pmu_state
!= idle
1228 || req_awaiting_reply
));
1232 pmu_wait_complete(struct adb_request
*req
)
1236 while((pmu_state
!= idle
&& pmu_state
!= locked
) || !req
->complete
)
1237 via_pmu_interrupt(0, NULL
, NULL
);
1240 /* This function loops until the PMU is idle and prevents it from
1241 * anwsering to ADB interrupts. pmu_request can still be called.
1242 * This is done to avoid spurrious shutdowns when we know we'll have
1243 * interrupts switched off for a long time
1248 unsigned long flags
;
1249 #ifdef SUSPEND_USES_PMU
1250 struct adb_request
*req
;
1255 spin_lock_irqsave(&pmu_lock
, flags
);
1257 if (pmu_suspended
> 1) {
1258 spin_unlock_irqrestore(&pmu_lock
, flags
);
1263 spin_unlock_irqrestore(&pmu_lock
, flags
);
1264 if (req_awaiting_reply
)
1265 adb_int_pending
= 1;
1266 via_pmu_interrupt(0, NULL
, NULL
);
1267 spin_lock_irqsave(&pmu_lock
, flags
);
1268 if (!adb_int_pending
&& pmu_state
== idle
&& !req_awaiting_reply
) {
1269 #ifdef SUSPEND_USES_PMU
1270 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
1271 spin_unlock_irqrestore(&pmu_lock
, flags
);
1272 while(!req
.complete
)
1274 #else /* SUSPEND_USES_PMU */
1276 disable_irq_nosync(gpio_irq
);
1277 out_8(&via
[IER
], CB1_INT
| IER_CLR
);
1278 spin_unlock_irqrestore(&pmu_lock
, flags
);
1279 #endif /* SUSPEND_USES_PMU */
1288 unsigned long flags
;
1290 if (!via
|| (pmu_suspended
< 1))
1293 spin_lock_irqsave(&pmu_lock
, flags
);
1295 if (pmu_suspended
> 0) {
1296 spin_unlock_irqrestore(&pmu_lock
, flags
);
1299 adb_int_pending
= 1;
1300 #ifdef SUSPEND_USES_PMU
1301 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
1302 spin_unlock_irqrestore(&pmu_lock
, flags
);
1303 while(!req
.complete
)
1305 #else /* SUSPEND_USES_PMU */
1307 enable_irq(gpio_irq
);
1308 out_8(&via
[IER
], CB1_INT
| IER_SET
);
1309 spin_unlock_irqrestore(&pmu_lock
, flags
);
1311 #endif /* SUSPEND_USES_PMU */
1314 /* Interrupt data could be the result data from an ADB cmd */
1316 pmu_handle_data(unsigned char *data
, int len
, struct pt_regs
*regs
)
1318 unsigned char ints
, pirq
;
1322 if (drop_interrupts
|| len
< 1) {
1323 adb_int_pending
= 0;
1328 /* Get PMU interrupt mask */
1331 /* Record zero interrupts for stats */
1335 /* Hack to deal with ADB autopoll flag */
1336 if (ints
& PMU_INT_ADB
)
1337 ints
&= ~(PMU_INT_ADB_AUTO
| PMU_INT_AUTO_SRQ_POLL
);
1342 if (i
> pmu_irq_stats
[10])
1343 pmu_irq_stats
[10] = i
;
1347 for (pirq
= 0; pirq
< 8; pirq
++)
1348 if (ints
& (1 << pirq
))
1350 pmu_irq_stats
[pirq
]++;
1352 ints
&= ~(1 << pirq
);
1354 /* Note: for some reason, we get an interrupt with len=1,
1355 * data[0]==0 after each normal ADB interrupt, at least
1356 * on the Pismo. Still investigating... --BenH
1358 if ((1 << pirq
) & PMU_INT_ADB
) {
1359 if ((data
[0] & PMU_INT_ADB_AUTO
) == 0) {
1360 struct adb_request
*req
= req_awaiting_reply
;
1362 printk(KERN_ERR
"PMU: extra ADB reply\n");
1365 req_awaiting_reply
= NULL
;
1369 memcpy(req
->reply
, data
+ 1, len
- 1);
1370 req
->reply_len
= len
- 1;
1374 #if defined(CONFIG_XMON) && !defined(CONFIG_PPC64)
1375 if (len
== 4 && data
[1] == 0x2c) {
1376 extern int xmon_wants_key
, xmon_adb_keycode
;
1377 if (xmon_wants_key
) {
1378 xmon_adb_keycode
= data
[2];
1382 #endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */
1385 * XXX On the [23]400 the PMU gives us an up
1386 * event for keycodes 0x74 or 0x75 when the PC
1387 * card eject buttons are released, so we
1388 * ignore those events.
1390 if (!(pmu_kind
== PMU_OHARE_BASED
&& len
== 4
1391 && data
[1] == 0x2c && data
[3] == 0xff
1392 && (data
[2] & ~1) == 0xf4))
1393 adb_input(data
+1, len
-1, regs
, 1);
1394 #endif /* CONFIG_ADB */
1397 /* Sound/brightness button pressed */
1398 else if ((1 << pirq
) & PMU_INT_SNDBRT
) {
1399 #ifdef CONFIG_PMAC_BACKLIGHT
1401 #ifdef CONFIG_INPUT_ADBHID
1402 if (!disable_kernel_backlight
)
1403 #endif /* CONFIG_INPUT_ADBHID */
1404 set_backlight_level(data
[1] >> 4);
1405 #endif /* CONFIG_PMAC_BACKLIGHT */
1407 /* Tick interrupt */
1408 else if ((1 << pirq
) & PMU_INT_TICK
) {
1409 /* Environement or tick interrupt, query batteries */
1410 if (pmu_battery_count
) {
1411 if ((--query_batt_timer
) == 0) {
1412 query_battery_state();
1413 query_batt_timer
= BATTERY_POLLING_COUNT
;
1417 else if ((1 << pirq
) & PMU_INT_ENVIRONMENT
) {
1418 if (pmu_battery_count
)
1419 query_battery_state();
1420 pmu_pass_intr(data
, len
);
1422 pmu_pass_intr(data
, len
);
1427 static struct adb_request
*
1428 pmu_sr_intr(struct pt_regs
*regs
)
1430 struct adb_request
*req
;
1433 if (via
[B
] & TREQ
) {
1434 printk(KERN_ERR
"PMU: spurious SR intr (%x)\n", via
[B
]);
1435 out_8(&via
[IFR
], SR_INT
);
1438 /* The ack may not yet be low when we get the interrupt */
1439 while ((in_8(&via
[B
]) & TACK
) != 0)
1442 /* if reading grab the byte, and reset the interrupt */
1443 if (pmu_state
== reading
|| pmu_state
== reading_intr
)
1444 bite
= in_8(&via
[SR
]);
1446 /* reset TREQ and wait for TACK to go high */
1447 out_8(&via
[B
], in_8(&via
[B
]) | TREQ
);
1450 switch (pmu_state
) {
1454 data_len
= req
->nbytes
- 1;
1455 send_byte(data_len
);
1458 if (data_index
<= data_len
) {
1459 send_byte(req
->data
[data_index
++]);
1463 data_len
= pmu_data_len
[req
->data
[0]][1];
1464 if (data_len
== 0) {
1466 current_req
= req
->next
;
1467 if (req
->reply_expected
)
1468 req_awaiting_reply
= req
;
1472 pmu_state
= reading
;
1474 reply_ptr
= req
->reply
+ req
->reply_len
;
1482 pmu_state
= reading_intr
;
1483 reply_ptr
= interrupt_data
[int_data_last
];
1485 if (gpio_irq
>= 0 && !gpio_irq_enabled
) {
1486 enable_irq(gpio_irq
);
1487 gpio_irq_enabled
= 1;
1493 if (data_len
== -1) {
1496 printk(KERN_ERR
"PMU: bad reply len %d\n", bite
);
1497 } else if (data_index
< 32) {
1498 reply_ptr
[data_index
++] = bite
;
1500 if (data_index
< data_len
) {
1505 if (pmu_state
== reading_intr
) {
1507 int_data_state
[int_data_last
] = int_data_ready
;
1508 interrupt_data_len
[int_data_last
] = data_len
;
1512 * For PMU sleep and freq change requests, we lock the
1513 * PMU until it's explicitely unlocked. This avoids any
1514 * spurrious event polling getting in
1516 current_req
= req
->next
;
1517 req
->reply_len
+= data_index
;
1518 if (req
->data
[0] == PMU_SLEEP
|| req
->data
[0] == PMU_CPU_SPEED
)
1527 printk(KERN_ERR
"via_pmu_interrupt: unknown state %d?\n",
1534 via_pmu_interrupt(int irq
, void *arg
, struct pt_regs
*regs
)
1536 unsigned long flags
;
1540 struct adb_request
*req
= NULL
;
1543 /* This is a bit brutal, we can probably do better */
1544 spin_lock_irqsave(&pmu_lock
, flags
);
1548 intr
= in_8(&via
[IFR
]) & (SR_INT
| CB1_INT
);
1552 if (++nloop
> 1000) {
1553 printk(KERN_DEBUG
"PMU: stuck in intr loop, "
1554 "intr=%x, ier=%x pmu_state=%d\n",
1555 intr
, in_8(&via
[IER
]), pmu_state
);
1558 out_8(&via
[IFR
], intr
);
1559 if (intr
& CB1_INT
) {
1560 adb_int_pending
= 1;
1563 if (intr
& SR_INT
) {
1564 req
= pmu_sr_intr(regs
);
1571 if (pmu_state
== idle
) {
1572 if (adb_int_pending
) {
1573 if (int_data_state
[0] == int_data_empty
)
1575 else if (int_data_state
[1] == int_data_empty
)
1580 int_data_state
[int_data_last
] = int_data_fill
;
1581 /* Sounds safer to make sure ACK is high before writing.
1582 * This helped kill a problem with ADB and some iBooks
1585 send_byte(PMU_INT_ACK
);
1586 adb_int_pending
= 0;
1587 } else if (current_req
)
1591 /* Mark the oldest buffer for flushing */
1592 if (int_data_state
[!int_data_last
] == int_data_ready
) {
1593 int_data_state
[!int_data_last
] = int_data_flush
;
1594 int_data
= !int_data_last
;
1595 } else if (int_data_state
[int_data_last
] == int_data_ready
) {
1596 int_data_state
[int_data_last
] = int_data_flush
;
1597 int_data
= int_data_last
;
1600 spin_unlock_irqrestore(&pmu_lock
, flags
);
1602 /* Deal with completed PMU requests outside of the lock */
1608 /* Deal with interrupt datas outside of the lock */
1609 if (int_data
>= 0) {
1610 pmu_handle_data(interrupt_data
[int_data
], interrupt_data_len
[int_data
], regs
);
1611 spin_lock_irqsave(&pmu_lock
, flags
);
1613 int_data_state
[int_data
] = int_data_empty
;
1618 return IRQ_RETVAL(handled
);
1624 unsigned long flags
;
1626 spin_lock_irqsave(&pmu_lock
, flags
);
1627 if (pmu_state
== locked
)
1629 adb_int_pending
= 1;
1630 spin_unlock_irqrestore(&pmu_lock
, flags
);
1635 gpio1_interrupt(int irq
, void *arg
, struct pt_regs
*regs
)
1637 unsigned long flags
;
1639 if ((in_8(gpio_reg
+ 0x9) & 0x02) == 0) {
1640 spin_lock_irqsave(&pmu_lock
, flags
);
1641 if (gpio_irq_enabled
> 0) {
1642 disable_irq_nosync(gpio_irq
);
1643 gpio_irq_enabled
= 0;
1646 adb_int_pending
= 1;
1647 spin_unlock_irqrestore(&pmu_lock
, flags
);
1648 via_pmu_interrupt(0, NULL
, NULL
);
1654 #ifdef CONFIG_PMAC_BACKLIGHT
1655 static int backlight_to_bright
[] = {
1656 0x7f, 0x46, 0x42, 0x3e, 0x3a, 0x36, 0x32, 0x2e,
1657 0x2a, 0x26, 0x22, 0x1e, 0x1a, 0x16, 0x12, 0x0e
1661 pmu_set_backlight_enable(int on
, int level
, void* data
)
1663 struct adb_request req
;
1669 pmu_request(&req
, NULL
, 2, PMU_BACKLIGHT_BRIGHT
,
1670 backlight_to_bright
[level
]);
1671 pmu_wait_complete(&req
);
1673 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
1674 PMU_POW_BACKLIGHT
| (on
? PMU_POW_ON
: PMU_POW_OFF
));
1675 pmu_wait_complete(&req
);
1681 pmu_bright_complete(struct adb_request
*req
)
1683 if (req
== &bright_req_1
)
1684 clear_bit(1, &async_req_locks
);
1685 if (req
== &bright_req_2
)
1686 clear_bit(2, &async_req_locks
);
1690 pmu_set_backlight_level(int level
, void* data
)
1695 if (test_and_set_bit(1, &async_req_locks
))
1697 pmu_request(&bright_req_1
, pmu_bright_complete
, 2, PMU_BACKLIGHT_BRIGHT
,
1698 backlight_to_bright
[level
]);
1699 if (test_and_set_bit(2, &async_req_locks
))
1701 pmu_request(&bright_req_2
, pmu_bright_complete
, 2, PMU_POWER_CTRL
,
1702 PMU_POW_BACKLIGHT
| (level
> BACKLIGHT_OFF
?
1703 PMU_POW_ON
: PMU_POW_OFF
));
1707 #endif /* CONFIG_PMAC_BACKLIGHT */
1710 pmu_enable_irled(int on
)
1712 struct adb_request req
;
1716 if (pmu_kind
== PMU_KEYLARGO_BASED
)
1719 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
, PMU_POW_IRLED
|
1720 (on
? PMU_POW_ON
: PMU_POW_OFF
));
1721 pmu_wait_complete(&req
);
1727 struct adb_request req
;
1732 local_irq_disable();
1734 drop_interrupts
= 1;
1736 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1737 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1739 while(!req
.complete
)
1743 pmu_request(&req
, NULL
, 1, PMU_RESET
);
1744 pmu_wait_complete(&req
);
1752 struct adb_request req
;
1757 local_irq_disable();
1759 drop_interrupts
= 1;
1761 if (pmu_kind
!= PMU_KEYLARGO_BASED
) {
1762 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, PMU_INT_ADB
|
1764 pmu_wait_complete(&req
);
1766 /* Disable server mode on shutdown or we'll just
1769 pmu_set_server_mode(0);
1772 pmu_request(&req
, NULL
, 5, PMU_SHUTDOWN
,
1773 'M', 'A', 'T', 'T');
1774 pmu_wait_complete(&req
);
1785 struct pmu_i2c_hdr
{
1796 pmu_i2c_combined_read(int bus
, int addr
, int subaddr
, u8
* data
, int len
)
1798 struct adb_request req
;
1799 struct pmu_i2c_hdr
*hdr
= (struct pmu_i2c_hdr
*)&req
.data
[1];
1803 for (retry
=0; retry
<16; retry
++) {
1804 memset(&req
, 0, sizeof(req
));
1807 hdr
->address
= addr
& 0xfe;
1808 hdr
->mode
= PMU_I2C_MODE_COMBINED
;
1810 hdr
->sub_addr
= subaddr
;
1811 hdr
->comb_addr
= addr
| 1;
1814 req
.nbytes
= sizeof(struct pmu_i2c_hdr
) + 1;
1815 req
.reply_expected
= 0;
1817 req
.data
[0] = PMU_I2C_CMD
;
1818 req
.reply
[0] = 0xff;
1819 rc
= pmu_queue_request(&req
);
1822 while(!req
.complete
)
1824 if (req
.reply
[0] == PMU_I2C_STATUS_OK
)
1828 if (req
.reply
[0] != PMU_I2C_STATUS_OK
)
1831 for (retry
=0; retry
<16; retry
++) {
1832 memset(&req
, 0, sizeof(req
));
1836 hdr
->bus
= PMU_I2C_BUS_STATUS
;
1837 req
.reply
[0] = 0xff;
1840 req
.reply_expected
= 0;
1842 req
.data
[0] = PMU_I2C_CMD
;
1843 rc
= pmu_queue_request(&req
);
1846 while(!req
.complete
)
1848 if (req
.reply
[0] == PMU_I2C_STATUS_DATAREAD
) {
1849 memcpy(data
, &req
.reply
[1], req
.reply_len
- 1);
1850 return req
.reply_len
- 1;
1857 pmu_i2c_stdsub_write(int bus
, int addr
, int subaddr
, u8
* data
, int len
)
1859 struct adb_request req
;
1860 struct pmu_i2c_hdr
*hdr
= (struct pmu_i2c_hdr
*)&req
.data
[1];
1864 for (retry
=0; retry
<16; retry
++) {
1865 memset(&req
, 0, sizeof(req
));
1868 hdr
->address
= addr
& 0xfe;
1869 hdr
->mode
= PMU_I2C_MODE_STDSUB
;
1871 hdr
->sub_addr
= subaddr
;
1872 hdr
->comb_addr
= addr
& 0xfe;
1875 req
.data
[0] = PMU_I2C_CMD
;
1876 memcpy(&req
.data
[sizeof(struct pmu_i2c_hdr
) + 1], data
, len
);
1877 req
.nbytes
= sizeof(struct pmu_i2c_hdr
) + len
+ 1;
1878 req
.reply_expected
= 0;
1880 req
.reply
[0] = 0xff;
1881 rc
= pmu_queue_request(&req
);
1884 while(!req
.complete
)
1886 if (req
.reply
[0] == PMU_I2C_STATUS_OK
)
1890 if (req
.reply
[0] != PMU_I2C_STATUS_OK
)
1893 for (retry
=0; retry
<16; retry
++) {
1894 memset(&req
, 0, sizeof(req
));
1898 hdr
->bus
= PMU_I2C_BUS_STATUS
;
1899 req
.reply
[0] = 0xff;
1902 req
.reply_expected
= 0;
1904 req
.data
[0] = PMU_I2C_CMD
;
1905 rc
= pmu_queue_request(&req
);
1908 while(!req
.complete
)
1910 if (req
.reply
[0] == PMU_I2C_STATUS_OK
)
1917 pmu_i2c_simple_read(int bus
, int addr
, u8
* data
, int len
)
1919 struct adb_request req
;
1920 struct pmu_i2c_hdr
*hdr
= (struct pmu_i2c_hdr
*)&req
.data
[1];
1924 for (retry
=0; retry
<16; retry
++) {
1925 memset(&req
, 0, sizeof(req
));
1928 hdr
->address
= addr
| 1;
1929 hdr
->mode
= PMU_I2C_MODE_SIMPLE
;
1935 req
.data
[0] = PMU_I2C_CMD
;
1936 req
.nbytes
= sizeof(struct pmu_i2c_hdr
) + 1;
1937 req
.reply_expected
= 0;
1939 req
.reply
[0] = 0xff;
1940 rc
= pmu_queue_request(&req
);
1943 while(!req
.complete
)
1945 if (req
.reply
[0] == PMU_I2C_STATUS_OK
)
1949 if (req
.reply
[0] != PMU_I2C_STATUS_OK
)
1952 for (retry
=0; retry
<16; retry
++) {
1953 memset(&req
, 0, sizeof(req
));
1957 hdr
->bus
= PMU_I2C_BUS_STATUS
;
1958 req
.reply
[0] = 0xff;
1961 req
.reply_expected
= 0;
1963 req
.data
[0] = PMU_I2C_CMD
;
1964 rc
= pmu_queue_request(&req
);
1967 while(!req
.complete
)
1969 if (req
.reply
[0] == PMU_I2C_STATUS_DATAREAD
) {
1970 memcpy(data
, &req
.reply
[1], req
.reply_len
- 1);
1971 return req
.reply_len
- 1;
1978 pmu_i2c_simple_write(int bus
, int addr
, u8
* data
, int len
)
1980 struct adb_request req
;
1981 struct pmu_i2c_hdr
*hdr
= (struct pmu_i2c_hdr
*)&req
.data
[1];
1985 for (retry
=0; retry
<16; retry
++) {
1986 memset(&req
, 0, sizeof(req
));
1989 hdr
->address
= addr
& 0xfe;
1990 hdr
->mode
= PMU_I2C_MODE_SIMPLE
;
1996 req
.data
[0] = PMU_I2C_CMD
;
1997 memcpy(&req
.data
[sizeof(struct pmu_i2c_hdr
) + 1], data
, len
);
1998 req
.nbytes
= sizeof(struct pmu_i2c_hdr
) + len
+ 1;
1999 req
.reply_expected
= 0;
2001 req
.reply
[0] = 0xff;
2002 rc
= pmu_queue_request(&req
);
2005 while(!req
.complete
)
2007 if (req
.reply
[0] == PMU_I2C_STATUS_OK
)
2011 if (req
.reply
[0] != PMU_I2C_STATUS_OK
)
2014 for (retry
=0; retry
<16; retry
++) {
2015 memset(&req
, 0, sizeof(req
));
2019 hdr
->bus
= PMU_I2C_BUS_STATUS
;
2020 req
.reply
[0] = 0xff;
2023 req
.reply_expected
= 0;
2025 req
.data
[0] = PMU_I2C_CMD
;
2026 rc
= pmu_queue_request(&req
);
2029 while(!req
.complete
)
2031 if (req
.reply
[0] == PMU_I2C_STATUS_OK
)
2039 static LIST_HEAD(sleep_notifiers
);
2042 pmu_register_sleep_notifier(struct pmu_sleep_notifier
*n
)
2044 struct list_head
*list
;
2045 struct pmu_sleep_notifier
*notifier
;
2047 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
2048 list
= list
->next
) {
2049 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
2050 if (n
->priority
> notifier
->priority
)
2053 __list_add(&n
->list
, list
->prev
, list
);
2058 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier
* n
)
2060 if (n
->list
.next
== 0)
2063 n
->list
.next
= NULL
;
2066 #endif /* CONFIG_PM */
2068 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2070 /* Sleep is broadcast last-to-first */
2072 broadcast_sleep(int when
, int fallback
)
2074 int ret
= PBOOK_SLEEP_OK
;
2075 struct list_head
*list
;
2076 struct pmu_sleep_notifier
*notifier
;
2078 for (list
= sleep_notifiers
.prev
; list
!= &sleep_notifiers
;
2079 list
= list
->prev
) {
2080 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
2081 ret
= notifier
->notifier_call(notifier
, when
);
2082 if (ret
!= PBOOK_SLEEP_OK
) {
2083 printk(KERN_DEBUG
"sleep %d rejected by %p (%p)\n",
2084 when
, notifier
, notifier
->notifier_call
);
2085 for (; list
!= &sleep_notifiers
; list
= list
->next
) {
2086 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
2087 notifier
->notifier_call(notifier
, fallback
);
2095 /* Wake is broadcast first-to-last */
2097 broadcast_wake(void)
2099 int ret
= PBOOK_SLEEP_OK
;
2100 struct list_head
*list
;
2101 struct pmu_sleep_notifier
*notifier
;
2103 for (list
= sleep_notifiers
.next
; list
!= &sleep_notifiers
;
2104 list
= list
->next
) {
2105 notifier
= list_entry(list
, struct pmu_sleep_notifier
, list
);
2106 notifier
->notifier_call(notifier
, PBOOK_WAKE
);
2112 * This struct is used to store config register values for
2113 * PCI devices which may get powered off when we sleep.
2115 static struct pci_save
{
2116 #ifndef HACKED_PCI_SAVE
2125 static int pbook_npci_saves
;
2128 pbook_alloc_pci_save(void)
2131 struct pci_dev
*pd
= NULL
;
2134 while ((pd
= pci_find_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
2139 pbook_pci_saves
= (struct pci_save
*)
2140 kmalloc(npci
* sizeof(struct pci_save
), GFP_KERNEL
);
2141 pbook_npci_saves
= npci
;
2145 pbook_free_pci_save(void)
2147 if (pbook_pci_saves
== NULL
)
2149 kfree(pbook_pci_saves
);
2150 pbook_pci_saves
= NULL
;
2151 pbook_npci_saves
= 0;
2155 pbook_pci_save(void)
2157 struct pci_save
*ps
= pbook_pci_saves
;
2158 struct pci_dev
*pd
= NULL
;
2159 int npci
= pbook_npci_saves
;
2164 while ((pd
= pci_find_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
2167 #ifndef HACKED_PCI_SAVE
2168 pci_read_config_word(pd
, PCI_COMMAND
, &ps
->command
);
2169 pci_read_config_word(pd
, PCI_CACHE_LINE_SIZE
, &ps
->cache_lat
);
2170 pci_read_config_word(pd
, PCI_INTERRUPT_LINE
, &ps
->intr
);
2171 pci_read_config_dword(pd
, PCI_ROM_ADDRESS
, &ps
->rom_address
);
2175 pci_read_config_dword(pd
, i
<<4, &ps
->config
[i
]);
2181 /* For this to work, we must take care of a few things: If gmac was enabled
2182 * during boot, it will be in the pci dev list. If it's disabled at this point
2183 * (and it will probably be), then you can't access it's config space.
2186 pbook_pci_restore(void)
2189 struct pci_save
*ps
= pbook_pci_saves
- 1;
2190 struct pci_dev
*pd
= NULL
;
2191 int npci
= pbook_npci_saves
;
2194 while ((pd
= pci_find_device(PCI_ANY_ID
, PCI_ANY_ID
, pd
)) != NULL
) {
2195 #ifdef HACKED_PCI_SAVE
2201 pci_write_config_dword(pd
, i
<<4, ps
->config
[i
]);
2202 pci_write_config_dword(pd
, 4, ps
->config
[1]);
2207 if (ps
->command
== 0)
2209 pci_read_config_word(pd
, PCI_COMMAND
, &cmd
);
2210 if ((ps
->command
& ~cmd
) == 0)
2212 switch (pd
->hdr_type
) {
2213 case PCI_HEADER_TYPE_NORMAL
:
2214 for (j
= 0; j
< 6; ++j
)
2215 pci_write_config_dword(pd
,
2216 PCI_BASE_ADDRESS_0
+ j
*4,
2217 pd
->resource
[j
].start
);
2218 pci_write_config_dword(pd
, PCI_ROM_ADDRESS
,
2220 pci_write_config_word(pd
, PCI_CACHE_LINE_SIZE
,
2222 pci_write_config_word(pd
, PCI_INTERRUPT_LINE
,
2224 pci_write_config_word(pd
, PCI_COMMAND
, ps
->command
);
2232 /* N.B. This doesn't work on the 3400 */
2236 struct adb_request req
;
2238 memset(&req
, 0, sizeof(req
));
2240 for (; n
> 0; --n
) {
2247 req
.reply
[0] = ADB_RET_OK
;
2249 req
.reply_expected
= 0;
2250 pmu_polled_request(&req
);
2258 req
.reply
[0] = ADB_RET_OK
;
2260 req
.reply_expected
= 0;
2261 pmu_polled_request(&req
);
2269 * Put the powerbook to sleep.
2272 static u32 save_via
[8];
2275 save_via_state(void)
2277 save_via
[0] = in_8(&via
[ANH
]);
2278 save_via
[1] = in_8(&via
[DIRA
]);
2279 save_via
[2] = in_8(&via
[B
]);
2280 save_via
[3] = in_8(&via
[DIRB
]);
2281 save_via
[4] = in_8(&via
[PCR
]);
2282 save_via
[5] = in_8(&via
[ACR
]);
2283 save_via
[6] = in_8(&via
[T1CL
]);
2284 save_via
[7] = in_8(&via
[T1CH
]);
2287 restore_via_state(void)
2289 out_8(&via
[ANH
], save_via
[0]);
2290 out_8(&via
[DIRA
], save_via
[1]);
2291 out_8(&via
[B
], save_via
[2]);
2292 out_8(&via
[DIRB
], save_via
[3]);
2293 out_8(&via
[PCR
], save_via
[4]);
2294 out_8(&via
[ACR
], save_via
[5]);
2295 out_8(&via
[T1CL
], save_via
[6]);
2296 out_8(&via
[T1CH
], save_via
[7]);
2297 out_8(&via
[IER
], IER_CLR
| 0x7f); /* disable all intrs */
2298 out_8(&via
[IFR
], 0x7f); /* clear IFR */
2299 out_8(&via
[IER
], IER_SET
| SR_INT
| CB1_INT
);
2303 pmac_suspend_devices(void)
2307 pm_prepare_console();
2309 /* Notify old-style device drivers & userland */
2310 ret
= broadcast_sleep(PBOOK_SLEEP_REQUEST
, PBOOK_SLEEP_REJECT
);
2311 if (ret
!= PBOOK_SLEEP_OK
) {
2312 printk(KERN_ERR
"Sleep rejected by drivers\n");
2316 /* Sync the disks. */
2317 /* XXX It would be nice to have some way to ensure that
2318 * nobody is dirtying any new buffers while we wait. That
2319 * could be achieved using the refrigerator for processes
2324 /* Sleep can fail now. May not be very robust but useful for debugging */
2325 ret
= broadcast_sleep(PBOOK_SLEEP_NOW
, PBOOK_WAKE
);
2326 if (ret
!= PBOOK_SLEEP_OK
) {
2327 printk(KERN_ERR
"Driver sleep failed\n");
2331 /* Send suspend call to devices, hold the device core's dpm_sem */
2332 ret
= device_suspend(PMSG_SUSPEND
);
2335 printk(KERN_ERR
"Driver sleep failed\n");
2339 /* Disable clock spreading on some machines */
2340 pmac_tweak_clock_spreading(0);
2342 /* Stop preemption */
2345 /* Make sure the decrementer won't interrupt us */
2346 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2347 /* Make sure any pending DEC interrupt occurring while we did
2348 * the above didn't re-enable the DEC */
2350 asm volatile("mtdec %0" : : "r" (0x7fffffff));
2352 /* We can now disable MSR_EE. This code of course works properly only
2353 * on UP machines... For SMP, if we ever implement sleep, we'll have to
2354 * stop the "other" CPUs way before we do all that stuff.
2356 local_irq_disable();
2358 /* Broadcast power down irq
2359 * This isn't that useful in most cases (only directly wired devices can
2360 * use this but still... This will take care of sysdev's as well, so
2361 * we exit from here with local irqs disabled and PIC off.
2363 ret
= device_power_down(PMSG_SUSPEND
);
2365 wakeup_decrementer();
2370 printk(KERN_ERR
"Driver powerdown failed\n");
2374 /* Wait for completion of async backlight requests */
2375 while (!bright_req_1
.complete
|| !bright_req_2
.complete
||
2379 /* Giveup the lazy FPU & vec so we don't have to back them
2380 * up from the low level code
2384 #ifdef CONFIG_ALTIVEC
2385 if (cpu_has_feature(CPU_FTR_ALTIVEC
))
2386 enable_kernel_altivec();
2387 #endif /* CONFIG_ALTIVEC */
2393 pmac_wakeup_devices(void)
2397 /* Power back up system devices (including the PIC) */
2400 /* Force a poll of ADB interrupts */
2401 adb_int_pending
= 1;
2402 via_pmu_interrupt(0, NULL
, NULL
);
2404 /* Restart jiffies & scheduling */
2405 wakeup_decrementer();
2407 /* Re-enable local CPU interrupts */
2412 /* Re-enable clock spreading on some machines */
2413 pmac_tweak_clock_spreading(1);
2415 /* Resume devices */
2418 /* Notify old style drivers */
2421 pm_restore_console();
2426 #define GRACKLE_PM (1<<7)
2427 #define GRACKLE_DOZE (1<<5)
2428 #define GRACKLE_NAP (1<<4)
2429 #define GRACKLE_SLEEP (1<<3)
2432 powerbook_sleep_grackle(void)
2434 unsigned long save_l2cr
;
2435 unsigned short pmcr1
;
2436 struct adb_request req
;
2438 struct pci_dev
*grackle
;
2440 grackle
= pci_find_slot(0, 0);
2444 ret
= pmac_suspend_devices();
2446 printk(KERN_ERR
"Sleep rejected by devices\n");
2450 /* Turn off various things. Darwin does some retry tests here... */
2451 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
, PMU_POW0_OFF
|PMU_POW0_HARD_DRIVE
);
2452 pmu_wait_complete(&req
);
2453 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2454 PMU_POW_OFF
|PMU_POW_BACKLIGHT
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2455 pmu_wait_complete(&req
);
2457 /* For 750, save backside cache setting and disable it */
2458 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2460 if (!__fake_sleep
) {
2461 /* Ask the PMU to put us to sleep */
2462 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2463 pmu_wait_complete(&req
);
2466 /* The VIA is supposed not to be restored correctly*/
2468 /* We shut down some HW */
2469 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2471 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2472 /* Apparently, MacOS uses NAP mode for Grackle ??? */
2473 pmcr1
&= ~(GRACKLE_DOZE
|GRACKLE_SLEEP
);
2474 pmcr1
|= GRACKLE_PM
|GRACKLE_NAP
;
2475 pci_write_config_word(grackle
, 0x70, pmcr1
);
2477 /* Call low-level ASM sleep handler */
2481 low_sleep_handler();
2483 /* We're awake again, stop grackle PM */
2484 pci_read_config_word(grackle
, 0x70, &pmcr1
);
2485 pmcr1
&= ~(GRACKLE_PM
|GRACKLE_DOZE
|GRACKLE_SLEEP
|GRACKLE_NAP
);
2486 pci_write_config_word(grackle
, 0x70, pmcr1
);
2488 /* Make sure the PMU is idle */
2489 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2490 restore_via_state();
2492 /* Restore L2 cache */
2493 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2494 _set_L2CR(save_l2cr
);
2496 /* Restore userland MMU context */
2497 set_context(current
->active_mm
->context
, current
->active_mm
->pgd
);
2499 /* Power things up */
2501 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2502 pmu_wait_complete(&req
);
2503 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL0
,
2504 PMU_POW0_ON
|PMU_POW0_HARD_DRIVE
);
2505 pmu_wait_complete(&req
);
2506 pmu_request(&req
, NULL
, 2, PMU_POWER_CTRL
,
2507 PMU_POW_ON
|PMU_POW_BACKLIGHT
|PMU_POW_CHARGER
|PMU_POW_IRLED
|PMU_POW_MEDIABAY
);
2508 pmu_wait_complete(&req
);
2510 pmac_wakeup_devices();
2516 powerbook_sleep_Core99(void)
2518 unsigned long save_l2cr
;
2519 unsigned long save_l3cr
;
2520 struct adb_request req
;
2523 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0) {
2524 printk(KERN_ERR
"Sleep mode not supported on this machine\n");
2528 if (num_online_cpus() > 1 || cpu_is_offline(0))
2531 ret
= pmac_suspend_devices();
2533 printk(KERN_ERR
"Sleep rejected by devices\n");
2537 /* Stop environment and ADB interrupts */
2538 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, 0);
2539 pmu_wait_complete(&req
);
2541 /* Tell PMU what events will wake us up */
2542 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_CLR_WAKEUP_EVENTS
,
2544 pmu_wait_complete(&req
);
2545 pmu_request(&req
, NULL
, 4, PMU_POWER_EVENTS
, PMU_PWR_SET_WAKEUP_EVENTS
,
2546 0, PMU_PWR_WAKEUP_KEY
|
2547 (option_lid_wakeup
? PMU_PWR_WAKEUP_LID_OPEN
: 0));
2548 pmu_wait_complete(&req
);
2550 /* Save the state of the L2 and L3 caches */
2551 save_l3cr
= _get_L3CR(); /* (returns -1 if not available) */
2552 save_l2cr
= _get_L2CR(); /* (returns -1 if not available) */
2554 if (!__fake_sleep
) {
2555 /* Ask the PMU to put us to sleep */
2556 pmu_request(&req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2557 pmu_wait_complete(&req
);
2560 /* The VIA is supposed not to be restored correctly*/
2563 /* Shut down various ASICs. There's a chance that we can no longer
2564 * talk to the PMU after this, so I moved it to _after_ sending the
2565 * sleep command to it. Still need to be checked.
2567 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 1);
2569 /* Call low-level ASM sleep handler */
2573 low_sleep_handler();
2575 /* Restore Apple core ASICs state */
2576 pmac_call_feature(PMAC_FTR_SLEEP_STATE
, NULL
, 0, 0);
2579 restore_via_state();
2581 /* tweak LPJ before cpufreq is there */
2582 loops_per_jiffy
*= 2;
2585 pmac_call_early_video_resume();
2587 /* Restore L2 cache */
2588 if (save_l2cr
!= 0xffffffff && (save_l2cr
& L2CR_L2E
) != 0)
2589 _set_L2CR(save_l2cr
);
2590 /* Restore L3 cache */
2591 if (save_l3cr
!= 0xffffffff && (save_l3cr
& L3CR_L3E
) != 0)
2592 _set_L3CR(save_l3cr
);
2594 /* Restore userland MMU context */
2595 set_context(current
->active_mm
->context
, current
->active_mm
->pgd
);
2597 /* Tell PMU we are ready */
2599 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
2600 pmu_wait_complete(&req
);
2601 pmu_request(&req
, NULL
, 2, PMU_SET_INTR_MASK
, pmu_intr_mask
);
2602 pmu_wait_complete(&req
);
2604 /* Restore LPJ, cpufreq will adjust the cpu frequency */
2605 loops_per_jiffy
/= 2;
2607 pmac_wakeup_devices();
2612 #define PB3400_MEM_CTRL 0xf8000000
2613 #define PB3400_MEM_CTRL_SLEEP 0x70
2616 powerbook_sleep_3400(void)
2621 struct adb_request sleep_req
;
2622 void __iomem
*mem_ctrl
;
2623 unsigned int __iomem
*mem_ctrl_sleep
;
2625 /* first map in the memory controller registers */
2626 mem_ctrl
= ioremap(PB3400_MEM_CTRL
, 0x100);
2627 if (mem_ctrl
== NULL
) {
2628 printk("powerbook_sleep_3400: ioremap failed\n");
2631 mem_ctrl_sleep
= mem_ctrl
+ PB3400_MEM_CTRL_SLEEP
;
2633 /* Allocate room for PCI save */
2634 pbook_alloc_pci_save();
2636 ret
= pmac_suspend_devices();
2638 pbook_free_pci_save();
2639 printk(KERN_ERR
"Sleep rejected by devices\n");
2643 /* Save the state of PCI config space for some slots */
2646 /* Set the memory controller to keep the memory refreshed
2647 while we're asleep */
2648 for (i
= 0x403f; i
>= 0x4000; --i
) {
2649 out_be32(mem_ctrl_sleep
, i
);
2651 x
= (in_be32(mem_ctrl_sleep
) >> 16) & 0x3ff;
2657 /* Ask the PMU to put us to sleep */
2658 pmu_request(&sleep_req
, NULL
, 5, PMU_SLEEP
, 'M', 'A', 'T', 'T');
2659 while (!sleep_req
.complete
)
2662 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,1);
2664 /* displacement-flush the L2 cache - necessary? */
2665 for (p
= KERNELBASE
; p
< KERNELBASE
+ 0x100000; p
+= 0x1000)
2666 i
= *(volatile int *)p
;
2669 /* Put the CPU into sleep mode */
2670 asm volatile("mfspr %0,1008" : "=r" (hid0
) :);
2671 hid0
= (hid0
& ~(HID0_NAP
| HID0_DOZE
)) | HID0_SLEEP
;
2672 asm volatile("mtspr 1008,%0" : : "r" (hid0
));
2673 _nmask_and_or_msr(0, MSR_POW
| MSR_EE
);
2676 /* OK, we're awake again, start restoring things */
2677 out_be32(mem_ctrl_sleep
, 0x3f);
2678 pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,0);
2679 pbook_pci_restore();
2682 /* wait for the PMU interrupt sequence to complete */
2686 pmac_wakeup_devices();
2687 pbook_free_pci_save();
2693 #endif /* CONFIG_PM && CONFIG_PPC32 */
2696 * Support for /dev/pmu device
2698 #define RB_SIZE 0x10
2699 struct pmu_private
{
2700 struct list_head list
;
2705 unsigned char data
[16];
2707 wait_queue_head_t wait
;
2709 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2710 int backlight_locker
;
2711 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2714 static LIST_HEAD(all_pmu_pvt
);
2715 static DEFINE_SPINLOCK(all_pvt_lock
);
2718 pmu_pass_intr(unsigned char *data
, int len
)
2720 struct pmu_private
*pp
;
2721 struct list_head
*list
;
2723 unsigned long flags
;
2725 if (len
> sizeof(pp
->rb_buf
[0].data
))
2726 len
= sizeof(pp
->rb_buf
[0].data
);
2727 spin_lock_irqsave(&all_pvt_lock
, flags
);
2728 for (list
= &all_pmu_pvt
; (list
= list
->next
) != &all_pmu_pvt
; ) {
2729 pp
= list_entry(list
, struct pmu_private
, list
);
2730 spin_lock(&pp
->lock
);
2734 if (i
!= pp
->rb_get
) {
2735 struct rb_entry
*rp
= &pp
->rb_buf
[pp
->rb_put
];
2737 memcpy(rp
->data
, data
, len
);
2739 wake_up_interruptible(&pp
->wait
);
2741 spin_unlock(&pp
->lock
);
2743 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2747 pmu_open(struct inode
*inode
, struct file
*file
)
2749 struct pmu_private
*pp
;
2750 unsigned long flags
;
2752 pp
= kmalloc(sizeof(struct pmu_private
), GFP_KERNEL
);
2755 pp
->rb_get
= pp
->rb_put
= 0;
2756 spin_lock_init(&pp
->lock
);
2757 init_waitqueue_head(&pp
->wait
);
2758 spin_lock_irqsave(&all_pvt_lock
, flags
);
2759 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2760 pp
->backlight_locker
= 0;
2761 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2762 list_add(&pp
->list
, &all_pmu_pvt
);
2763 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2764 file
->private_data
= pp
;
2769 pmu_read(struct file
*file
, char __user
*buf
,
2770 size_t count
, loff_t
*ppos
)
2772 struct pmu_private
*pp
= file
->private_data
;
2773 DECLARE_WAITQUEUE(wait
, current
);
2774 unsigned long flags
;
2777 if (count
< 1 || pp
== 0)
2779 if (!access_ok(VERIFY_WRITE
, buf
, count
))
2782 spin_lock_irqsave(&pp
->lock
, flags
);
2783 add_wait_queue(&pp
->wait
, &wait
);
2784 current
->state
= TASK_INTERRUPTIBLE
;
2788 if (pp
->rb_get
!= pp
->rb_put
) {
2790 struct rb_entry
*rp
= &pp
->rb_buf
[i
];
2792 spin_unlock_irqrestore(&pp
->lock
, flags
);
2795 if (ret
> 0 && copy_to_user(buf
, rp
->data
, ret
))
2799 spin_lock_irqsave(&pp
->lock
, flags
);
2804 if (file
->f_flags
& O_NONBLOCK
)
2807 if (signal_pending(current
))
2809 spin_unlock_irqrestore(&pp
->lock
, flags
);
2811 spin_lock_irqsave(&pp
->lock
, flags
);
2813 current
->state
= TASK_RUNNING
;
2814 remove_wait_queue(&pp
->wait
, &wait
);
2815 spin_unlock_irqrestore(&pp
->lock
, flags
);
2821 pmu_write(struct file
*file
, const char __user
*buf
,
2822 size_t count
, loff_t
*ppos
)
2828 pmu_fpoll(struct file
*filp
, poll_table
*wait
)
2830 struct pmu_private
*pp
= filp
->private_data
;
2831 unsigned int mask
= 0;
2832 unsigned long flags
;
2836 poll_wait(filp
, &pp
->wait
, wait
);
2837 spin_lock_irqsave(&pp
->lock
, flags
);
2838 if (pp
->rb_get
!= pp
->rb_put
)
2840 spin_unlock_irqrestore(&pp
->lock
, flags
);
2845 pmu_release(struct inode
*inode
, struct file
*file
)
2847 struct pmu_private
*pp
= file
->private_data
;
2848 unsigned long flags
;
2852 file
->private_data
= NULL
;
2853 spin_lock_irqsave(&all_pvt_lock
, flags
);
2854 list_del(&pp
->list
);
2855 spin_unlock_irqrestore(&all_pvt_lock
, flags
);
2856 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
2857 if (pp
->backlight_locker
) {
2858 spin_lock_irqsave(&pmu_lock
, flags
);
2859 disable_kernel_backlight
--;
2860 spin_unlock_irqrestore(&pmu_lock
, flags
);
2862 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
2870 pmu_ioctl(struct inode
* inode
, struct file
*filp
,
2871 u_int cmd
, u_long arg
)
2873 __u32 __user
*argp
= (__u32 __user
*)arg
;
2874 int error
= -EINVAL
;
2877 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
2879 if (!capable(CAP_SYS_ADMIN
))
2881 if (sleep_in_progress
)
2883 sleep_in_progress
= 1;
2885 case PMU_OHARE_BASED
:
2886 error
= powerbook_sleep_3400();
2888 case PMU_HEATHROW_BASED
:
2889 case PMU_PADDINGTON_BASED
:
2890 error
= powerbook_sleep_grackle();
2892 case PMU_KEYLARGO_BASED
:
2893 error
= powerbook_sleep_Core99();
2898 sleep_in_progress
= 0;
2900 case PMU_IOC_CAN_SLEEP
:
2901 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE
,NULL
,0,-1) < 0)
2902 return put_user(0, argp
);
2904 return put_user(1, argp
);
2905 #endif /* CONFIG_PM && CONFIG_PPC32 */
2907 #ifdef CONFIG_PMAC_BACKLIGHT
2908 /* Backlight should have its own device or go via
2911 case PMU_IOC_GET_BACKLIGHT
:
2912 if (sleep_in_progress
)
2914 error
= get_backlight_level();
2917 return put_user(error
, argp
);
2918 case PMU_IOC_SET_BACKLIGHT
:
2921 if (sleep_in_progress
)
2923 error
= get_user(value
, argp
);
2925 error
= set_backlight_level(value
);
2928 #ifdef CONFIG_INPUT_ADBHID
2929 case PMU_IOC_GRAB_BACKLIGHT
: {
2930 struct pmu_private
*pp
= filp
->private_data
;
2931 unsigned long flags
;
2933 if (pp
->backlight_locker
)
2935 pp
->backlight_locker
= 1;
2936 spin_lock_irqsave(&pmu_lock
, flags
);
2937 disable_kernel_backlight
++;
2938 spin_unlock_irqrestore(&pmu_lock
, flags
);
2941 #endif /* CONFIG_INPUT_ADBHID */
2942 #endif /* CONFIG_PMAC_BACKLIGHT */
2943 case PMU_IOC_GET_MODEL
:
2944 return put_user(pmu_kind
, argp
);
2945 case PMU_IOC_HAS_ADB
:
2946 return put_user(pmu_has_adb
, argp
);
2951 static struct file_operations pmu_device_fops
= {
2957 .release
= pmu_release
,
2960 static struct miscdevice pmu_device
= {
2961 PMU_MINOR
, "pmu", &pmu_device_fops
2964 static int pmu_device_init(void)
2968 if (misc_register(&pmu_device
) < 0)
2969 printk(KERN_ERR
"via-pmu: cannot register misc device.\n");
2972 device_initcall(pmu_device_init
);
2977 polled_handshake(volatile unsigned char __iomem
*via
)
2979 via
[B
] &= ~TREQ
; eieio();
2980 while ((via
[B
] & TACK
) != 0)
2982 via
[B
] |= TREQ
; eieio();
2983 while ((via
[B
] & TACK
) == 0)
2988 polled_send_byte(volatile unsigned char __iomem
*via
, int x
)
2990 via
[ACR
] |= SR_OUT
| SR_EXT
; eieio();
2991 via
[SR
] = x
; eieio();
2992 polled_handshake(via
);
2996 polled_recv_byte(volatile unsigned char __iomem
*via
)
3000 via
[ACR
] = (via
[ACR
] & ~SR_OUT
) | SR_EXT
; eieio();
3001 x
= via
[SR
]; eieio();
3002 polled_handshake(via
);
3003 x
= via
[SR
]; eieio();
3008 pmu_polled_request(struct adb_request
*req
)
3010 unsigned long flags
;
3012 volatile unsigned char __iomem
*v
= via
;
3016 l
= pmu_data_len
[c
][0];
3017 if (l
>= 0 && req
->nbytes
!= l
+ 1)
3020 local_irq_save(flags
);
3021 while (pmu_state
!= idle
)
3024 while ((via
[B
] & TACK
) == 0)
3026 polled_send_byte(v
, c
);
3028 l
= req
->nbytes
- 1;
3029 polled_send_byte(v
, l
);
3031 for (i
= 1; i
<= l
; ++i
)
3032 polled_send_byte(v
, req
->data
[i
]);
3034 l
= pmu_data_len
[c
][1];
3036 l
= polled_recv_byte(v
);
3037 for (i
= 0; i
< l
; ++i
)
3038 req
->reply
[i
+ req
->reply_len
] = polled_recv_byte(v
);
3043 local_irq_restore(flags
);
3046 #endif /* DEBUG_SLEEP */
3049 /* FIXME: This is a temporary set of callbacks to enable us
3050 * to do suspend-to-disk.
3053 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
3055 static int pmu_sys_suspended
= 0;
3057 static int pmu_sys_suspend(struct sys_device
*sysdev
, pm_message_t state
)
3059 if (state
.event
!= PM_EVENT_SUSPEND
|| pmu_sys_suspended
)
3062 /* Suspend PMU event interrupts */
3065 pmu_sys_suspended
= 1;
3069 static int pmu_sys_resume(struct sys_device
*sysdev
)
3071 struct adb_request req
;
3073 if (!pmu_sys_suspended
)
3076 /* Tell PMU we are ready */
3077 pmu_request(&req
, NULL
, 2, PMU_SYSTEM_READY
, 2);
3078 pmu_wait_complete(&req
);
3080 /* Resume PMU event interrupts */
3083 pmu_sys_suspended
= 0;
3088 #endif /* CONFIG_PM && CONFIG_PPC32 */
3090 static struct sysdev_class pmu_sysclass
= {
3091 set_kset_name("pmu"),
3094 static struct sys_device device_pmu
= {
3096 .cls
= &pmu_sysclass
,
3099 static struct sysdev_driver driver_pmu
= {
3100 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
3101 .suspend
= &pmu_sys_suspend
,
3102 .resume
= &pmu_sys_resume
,
3103 #endif /* CONFIG_PM && CONFIG_PPC32 */
3106 static int __init
init_pmu_sysfs(void)
3110 rc
= sysdev_class_register(&pmu_sysclass
);
3112 printk(KERN_ERR
"Failed registering PMU sys class\n");
3115 rc
= sysdev_register(&device_pmu
);
3117 printk(KERN_ERR
"Failed registering PMU sys device\n");
3120 rc
= sysdev_driver_register(&pmu_sysclass
, &driver_pmu
);
3122 printk(KERN_ERR
"Failed registering PMU sys driver\n");
3128 subsys_initcall(init_pmu_sysfs
);
3130 EXPORT_SYMBOL(pmu_request
);
3131 EXPORT_SYMBOL(pmu_poll
);
3132 EXPORT_SYMBOL(pmu_poll_adb
);
3133 EXPORT_SYMBOL(pmu_wait_complete
);
3134 EXPORT_SYMBOL(pmu_suspend
);
3135 EXPORT_SYMBOL(pmu_resume
);
3136 EXPORT_SYMBOL(pmu_unlock
);
3137 EXPORT_SYMBOL(pmu_i2c_combined_read
);
3138 EXPORT_SYMBOL(pmu_i2c_stdsub_write
);
3139 EXPORT_SYMBOL(pmu_i2c_simple_read
);
3140 EXPORT_SYMBOL(pmu_i2c_simple_write
);
3141 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
3142 EXPORT_SYMBOL(pmu_register_sleep_notifier
);
3143 EXPORT_SYMBOL(pmu_unregister_sleep_notifier
);
3144 EXPORT_SYMBOL(pmu_enable_irled
);
3145 EXPORT_SYMBOL(pmu_battery_count
);
3146 EXPORT_SYMBOL(pmu_batteries
);
3147 EXPORT_SYMBOL(pmu_power_flags
);
3148 #endif /* CONFIG_PM && CONFIG_PPC32 */