aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-pxa
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/Kconfig4
-rw-r--r--arch/arm/mach-pxa/include/mach/sharpsl_pm.h106
-rw-r--r--arch/arm/mach-pxa/sharpsl.h2
-rw-r--r--arch/arm/mach-pxa/sharpsl_pm.c834
4 files changed, 944 insertions, 2 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 2e45630ebdee..f4533f8ff4e8 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -94,6 +94,10 @@ config PXA_SHARPSL
94 SL-C3000 (Spitz), SL-C3100 (Borzoi) or SL-C6000x (Tosa) 94 SL-C3000 (Spitz), SL-C3100 (Borzoi) or SL-C6000x (Tosa)
95 handheld computer. 95 handheld computer.
96 96
97config SHARPSL_PM
98 bool
99 select APM_EMULATION
100
97config CORGI_SSP_DEPRECATED 101config CORGI_SSP_DEPRECATED
98 bool 102 bool
99 select PXA_SSP 103 select PXA_SSP
diff --git a/arch/arm/mach-pxa/include/mach/sharpsl_pm.h b/arch/arm/mach-pxa/include/mach/sharpsl_pm.h
new file mode 100644
index 000000000000..2d00db22b981
--- /dev/null
+++ b/arch/arm/mach-pxa/include/mach/sharpsl_pm.h
@@ -0,0 +1,106 @@
1/*
2 * SharpSL Battery/PM Driver
3 *
4 * Copyright (c) 2004-2005 Richard Purdie
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 */
11
12#include <linux/interrupt.h>
13
14struct sharpsl_charger_machinfo {
15 void (*init)(void);
16 void (*exit)(void);
17 int gpio_acin;
18 int gpio_batfull;
19 int batfull_irq;
20 int gpio_batlock;
21 int gpio_fatal;
22 void (*discharge)(int);
23 void (*discharge1)(int);
24 void (*charge)(int);
25 void (*measure_temp)(int);
26 void (*presuspend)(void);
27 void (*postsuspend)(void);
28 void (*earlyresume)(void);
29 unsigned long (*read_devdata)(int);
30#define SHARPSL_BATT_VOLT 1
31#define SHARPSL_BATT_TEMP 2
32#define SHARPSL_ACIN_VOLT 3
33#define SHARPSL_STATUS_ACIN 4
34#define SHARPSL_STATUS_LOCK 5
35#define SHARPSL_STATUS_CHRGFULL 6
36#define SHARPSL_STATUS_FATAL 7
37 unsigned long (*charger_wakeup)(void);
38 int (*should_wakeup)(unsigned int resume_on_alarm);
39 void (*backlight_limit)(int);
40 int (*backlight_get_status) (void);
41 int charge_on_volt;
42 int charge_on_temp;
43 int charge_acin_high;
44 int charge_acin_low;
45 int fatal_acin_volt;
46 int fatal_noacin_volt;
47 int bat_levels;
48 struct battery_thresh *bat_levels_noac;
49 struct battery_thresh *bat_levels_acin;
50 struct battery_thresh *bat_levels_noac_bl;
51 struct battery_thresh *bat_levels_acin_bl;
52 int status_high_acin;
53 int status_low_acin;
54 int status_high_noac;
55 int status_low_noac;
56};
57
58struct battery_thresh {
59 int voltage;
60 int percentage;
61};
62
63struct battery_stat {
64 int ac_status; /* APM AC Present/Not Present */
65 int mainbat_status; /* APM Main Battery Status */
66 int mainbat_percent; /* Main Battery Percentage Charge */
67 int mainbat_voltage; /* Main Battery Voltage */
68};
69
70struct sharpsl_pm_status {
71 struct device *dev;
72 struct timer_list ac_timer;
73 struct timer_list chrg_full_timer;
74
75 int charge_mode;
76#define CHRG_ERROR (-1)
77#define CHRG_OFF (0)
78#define CHRG_ON (1)
79#define CHRG_DONE (2)
80
81 unsigned int flags;
82#define SHARPSL_SUSPENDED (1 << 0) /* Device is Suspended */
83#define SHARPSL_ALARM_ACTIVE (1 << 1) /* Alarm is for charging event (not user) */
84#define SHARPSL_BL_LIMIT (1 << 2) /* Backlight Intensity Limited */
85#define SHARPSL_APM_QUEUED (1 << 3) /* APM Event Queued */
86#define SHARPSL_DO_OFFLINE_CHRG (1 << 4) /* Trigger the offline charger */
87
88 int full_count;
89 unsigned long charge_start_time;
90 struct sharpsl_charger_machinfo *machinfo;
91 struct battery_stat battstat;
92};
93
94extern struct sharpsl_pm_status sharpsl_pm;
95
96
97#define SHARPSL_LED_ERROR 2
98#define SHARPSL_LED_ON 1
99#define SHARPSL_LED_OFF 0
100
101void sharpsl_battery_kick(void);
102void sharpsl_pm_led(int val);
103irqreturn_t sharpsl_ac_isr(int irq, void *dev_id);
104irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id);
105irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id);
106
diff --git a/arch/arm/mach-pxa/sharpsl.h b/arch/arm/mach-pxa/sharpsl.h
index 047909a76651..f1cd00ea0322 100644
--- a/arch/arm/mach-pxa/sharpsl.h
+++ b/arch/arm/mach-pxa/sharpsl.h
@@ -7,7 +7,7 @@
7 * 7 *
8 */ 8 */
9 9
10#include <asm/hardware/sharpsl_pm.h> 10#include <mach/sharpsl_pm.h>
11 11
12/* 12/*
13 * SharpSL SSP Driver 13 * SharpSL SSP Driver
diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-pxa/sharpsl_pm.c
index 16b4ec67e3b6..9d61c4916968 100644
--- a/arch/arm/mach-pxa/sharpsl_pm.c
+++ b/arch/arm/mach-pxa/sharpsl_pm.c
@@ -21,13 +21,63 @@
21#include <linux/irq.h> 21#include <linux/irq.h>
22#include <linux/platform_device.h> 22#include <linux/platform_device.h>
23#include <linux/apm-emulation.h> 23#include <linux/apm-emulation.h>
24#include <linux/timer.h>
25#include <linux/apm_bios.h>
26#include <linux/delay.h>
27#include <linux/leds.h>
28#include <linux/suspend.h>
24 29
25#include <mach/hardware.h> 30#include <mach/hardware.h>
26#include <asm/mach-types.h> 31#include <asm/mach-types.h>
27#include <mach/pm.h> 32#include <mach/pm.h>
33#include <mach/pxa2xx-regs.h>
28#include <mach/pxa2xx-gpio.h> 34#include <mach/pxa2xx-gpio.h>
35#include <mach/regs-rtc.h>
29#include <mach/sharpsl.h> 36#include <mach/sharpsl.h>
30#include "sharpsl.h" 37#include <mach/sharpsl_pm.h>
38
39/*
40 * Constants
41 */
42#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */
43#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */
44#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */
45#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */
46
47#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */
48#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */
49#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */
50#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */
51#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */
52#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */
53#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */
54#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */
55
56/*
57 * Prototypes
58 */
59#ifdef CONFIG_PM
60static int sharpsl_off_charge_battery(void);
61static int sharpsl_check_battery_voltage(void);
62static int sharpsl_fatal_check(void);
63#endif
64static int sharpsl_check_battery_temp(void);
65static int sharpsl_ac_check(void);
66static int sharpsl_average_value(int ad);
67static void sharpsl_average_clear(void);
68static void sharpsl_charge_toggle(struct work_struct *private_);
69static void sharpsl_battery_thread(struct work_struct *private_);
70
71
72/*
73 * Variables
74 */
75struct sharpsl_pm_status sharpsl_pm;
76DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
77DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
78DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
79
80
31 81
32struct battery_thresh spitz_battery_levels_acin[] = { 82struct battery_thresh spitz_battery_levels_acin[] = {
33 { 213, 100}, 83 { 213, 100},
@@ -189,3 +239,785 @@ void sharpsl_pm_pxa_remove(void)
189 if (sharpsl_pm.machinfo->batfull_irq) 239 if (sharpsl_pm.machinfo->batfull_irq)
190 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr); 240 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr);
191} 241}
242
243static int get_percentage(int voltage)
244{
245 int i = sharpsl_pm.machinfo->bat_levels - 1;
246 int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
247 struct battery_thresh *thresh;
248
249 if (sharpsl_pm.charge_mode == CHRG_ON)
250 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
251 else
252 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
253
254 while (i > 0 && (voltage > thresh[i].voltage))
255 i--;
256
257 return thresh[i].percentage;
258}
259
260static int get_apm_status(int voltage)
261{
262 int low_thresh, high_thresh;
263
264 if (sharpsl_pm.charge_mode == CHRG_ON) {
265 high_thresh = sharpsl_pm.machinfo->status_high_acin;
266 low_thresh = sharpsl_pm.machinfo->status_low_acin;
267 } else {
268 high_thresh = sharpsl_pm.machinfo->status_high_noac;
269 low_thresh = sharpsl_pm.machinfo->status_low_noac;
270 }
271
272 if (voltage >= high_thresh)
273 return APM_BATTERY_STATUS_HIGH;
274 if (voltage >= low_thresh)
275 return APM_BATTERY_STATUS_LOW;
276 return APM_BATTERY_STATUS_CRITICAL;
277}
278
279void sharpsl_battery_kick(void)
280{
281 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
282}
283EXPORT_SYMBOL(sharpsl_battery_kick);
284
285
286static void sharpsl_battery_thread(struct work_struct *private_)
287{
288 int voltage, percent, apm_status, i = 0;
289
290 if (!sharpsl_pm.machinfo)
291 return;
292
293 sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
294
295 /* Corgi cannot confirm when battery fully charged so periodically kick! */
296 if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
297 && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
298 schedule_delayed_work(&toggle_charger, 0);
299
300 while(1) {
301 voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
302
303 if (voltage > 0) break;
304 if (i++ > 5) {
305 voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
306 dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
307 break;
308 }
309 }
310
311 voltage = sharpsl_average_value(voltage);
312 apm_status = get_apm_status(voltage);
313 percent = get_percentage(voltage);
314
315 /* At low battery voltages, the voltage has a tendency to start
316 creeping back up so we try to avoid this here */
317 if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) {
318 sharpsl_pm.battstat.mainbat_voltage = voltage;
319 sharpsl_pm.battstat.mainbat_status = apm_status;
320 sharpsl_pm.battstat.mainbat_percent = percent;
321 }
322
323 dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
324 sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
325
326#ifdef CONFIG_BACKLIGHT_CORGI
327 /* If battery is low. limit backlight intensity to save power. */
328 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
329 && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) ||
330 (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
331 if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) {
332 sharpsl_pm.machinfo->backlight_limit(1);
333 sharpsl_pm.flags |= SHARPSL_BL_LIMIT;
334 }
335 } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) {
336 sharpsl_pm.machinfo->backlight_limit(0);
337 sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT;
338 }
339#endif
340
341 /* Suspend if critical battery level */
342 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
343 && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
344 && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
345 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
346 dev_err(sharpsl_pm.dev, "Fatal Off\n");
347 apm_queue_event(APM_CRITICAL_SUSPEND);
348 }
349
350 schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
351}
352
353void sharpsl_pm_led(int val)
354{
355 if (val == SHARPSL_LED_ERROR) {
356 dev_err(sharpsl_pm.dev, "Charging Error!\n");
357 } else if (val == SHARPSL_LED_ON) {
358 dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
359 led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
360 } else {
361 dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
362 led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
363 }
364}
365
366static void sharpsl_charge_on(void)
367{
368 dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
369
370 sharpsl_pm.full_count = 0;
371 sharpsl_pm.charge_mode = CHRG_ON;
372 schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
373 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
374}
375
376static void sharpsl_charge_off(void)
377{
378 dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
379
380 sharpsl_pm.machinfo->charge(0);
381 sharpsl_pm_led(SHARPSL_LED_OFF);
382 sharpsl_pm.charge_mode = CHRG_OFF;
383
384 schedule_delayed_work(&sharpsl_bat, 0);
385}
386
387static void sharpsl_charge_error(void)
388{
389 sharpsl_pm_led(SHARPSL_LED_ERROR);
390 sharpsl_pm.machinfo->charge(0);
391 sharpsl_pm.charge_mode = CHRG_ERROR;
392}
393
394static void sharpsl_charge_toggle(struct work_struct *private_)
395{
396 dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies);
397
398 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
399 sharpsl_charge_off();
400 return;
401 } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
402 sharpsl_charge_error();
403 return;
404 }
405
406 sharpsl_pm_led(SHARPSL_LED_ON);
407 sharpsl_pm.machinfo->charge(0);
408 mdelay(SHARPSL_CHARGE_WAIT_TIME);
409 sharpsl_pm.machinfo->charge(1);
410
411 sharpsl_pm.charge_start_time = jiffies;
412}
413
414static void sharpsl_ac_timer(unsigned long data)
415{
416 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
417
418 dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin);
419
420 sharpsl_average_clear();
421 if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
422 sharpsl_charge_on();
423 else if (sharpsl_pm.charge_mode == CHRG_ON)
424 sharpsl_charge_off();
425
426 schedule_delayed_work(&sharpsl_bat, 0);
427}
428
429
430irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
431{
432 /* Delay the event slightly to debounce */
433 /* Must be a smaller delay than the chrg_full_isr below */
434 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
435
436 return IRQ_HANDLED;
437}
438
439static void sharpsl_chrg_full_timer(unsigned long data)
440{
441 dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
442
443 sharpsl_pm.full_count++;
444
445 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
446 dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
447 if (sharpsl_pm.charge_mode == CHRG_ON)
448 sharpsl_charge_off();
449 } else if (sharpsl_pm.full_count < 2) {
450 dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
451 schedule_delayed_work(&toggle_charger, 0);
452 } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
453 dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
454 schedule_delayed_work(&toggle_charger, 0);
455 } else {
456 sharpsl_charge_off();
457 sharpsl_pm.charge_mode = CHRG_DONE;
458 dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
459 }
460}
461
462/* Charging Finished Interrupt (Not present on Corgi) */
463/* Can trigger at the same time as an AC status change so
464 delay until after that has been processed */
465irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
466{
467 if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
468 return IRQ_HANDLED;
469
470 /* delay until after any ac interrupt */
471 mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
472
473 return IRQ_HANDLED;
474}
475
476irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
477{
478 int is_fatal = 0;
479
480 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
481 dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
482 is_fatal = 1;
483 }
484
485 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
486 dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
487 is_fatal = 1;
488 }
489
490 if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
491 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
492 apm_queue_event(APM_CRITICAL_SUSPEND);
493 }
494
495 return IRQ_HANDLED;
496}
497
498/*
499 * Maintain an average of the last 10 readings
500 */
501#define SHARPSL_CNV_VALUE_NUM 10
502static int sharpsl_ad_index;
503
504static void sharpsl_average_clear(void)
505{
506 sharpsl_ad_index = 0;
507}
508
509static int sharpsl_average_value(int ad)
510{
511 int i, ad_val = 0;
512 static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
513
514 if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
515 sharpsl_ad_index = 0;
516 return ad;
517 }
518
519 sharpsl_ad[sharpsl_ad_index] = ad;
520 sharpsl_ad_index++;
521 if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
522 for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
523 sharpsl_ad[i] = sharpsl_ad[i+1];
524 sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
525 }
526 for (i=0; i < sharpsl_ad_index; i++)
527 ad_val += sharpsl_ad[i];
528
529 return (ad_val / sharpsl_ad_index);
530}
531
532/*
533 * Take an array of 5 integers, remove the maximum and minimum values
534 * and return the average.
535 */
536static int get_select_val(int *val)
537{
538 int i, j, k, temp, sum = 0;
539
540 /* Find MAX val */
541 temp = val[0];
542 j=0;
543 for (i=1; i<5; i++) {
544 if (temp < val[i]) {
545 temp = val[i];
546 j = i;
547 }
548 }
549
550 /* Find MIN val */
551 temp = val[4];
552 k=4;
553 for (i=3; i>=0; i--) {
554 if (temp > val[i]) {
555 temp = val[i];
556 k = i;
557 }
558 }
559
560 for (i=0; i<5; i++)
561 if (i != j && i != k )
562 sum += val[i];
563
564 dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]);
565
566 return (sum/3);
567}
568
569static int sharpsl_check_battery_temp(void)
570{
571 int val, i, buff[5];
572
573 /* Check battery temperature */
574 for (i=0; i<5; i++) {
575 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
576 sharpsl_pm.machinfo->measure_temp(1);
577 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
578 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
579 sharpsl_pm.machinfo->measure_temp(0);
580 }
581
582 val = get_select_val(buff);
583
584 dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
585 if (val > sharpsl_pm.machinfo->charge_on_temp) {
586 printk(KERN_WARNING "Not charging: temperature out of limits.\n");
587 return -1;
588 }
589
590 return 0;
591}
592
593#ifdef CONFIG_PM
594static int sharpsl_check_battery_voltage(void)
595{
596 int val, i, buff[5];
597
598 /* disable charge, enable discharge */
599 sharpsl_pm.machinfo->charge(0);
600 sharpsl_pm.machinfo->discharge(1);
601 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
602
603 if (sharpsl_pm.machinfo->discharge1)
604 sharpsl_pm.machinfo->discharge1(1);
605
606 /* Check battery voltage */
607 for (i=0; i<5; i++) {
608 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
609 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
610 }
611
612 if (sharpsl_pm.machinfo->discharge1)
613 sharpsl_pm.machinfo->discharge1(0);
614
615 sharpsl_pm.machinfo->discharge(0);
616
617 val = get_select_val(buff);
618 dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
619
620 if (val < sharpsl_pm.machinfo->charge_on_volt)
621 return -1;
622
623 return 0;
624}
625#endif
626
627static int sharpsl_ac_check(void)
628{
629 int temp, i, buff[5];
630
631 for (i=0; i<5; i++) {
632 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
633 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
634 }
635
636 temp = get_select_val(buff);
637 dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp);
638
639 if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
640 dev_err(sharpsl_pm.dev, "Error: AC check failed.\n");
641 return -1;
642 }
643
644 return 0;
645}
646
647#ifdef CONFIG_PM
648static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
649{
650 sharpsl_pm.flags |= SHARPSL_SUSPENDED;
651 flush_scheduled_work();
652
653 if (sharpsl_pm.charge_mode == CHRG_ON)
654 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
655 else
656 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
657
658 return 0;
659}
660
661static int sharpsl_pm_resume(struct platform_device *pdev)
662{
663 /* Clear the reset source indicators as they break the bootloader upon reboot */
664 RCSR = 0x0f;
665 sharpsl_average_clear();
666 sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
667 sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
668
669 return 0;
670}
671
672static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
673{
674 dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR);
675
676 dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
677 /* not charging and AC-IN! */
678
679 if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
680 dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
681 sharpsl_pm.charge_mode = CHRG_OFF;
682 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
683 sharpsl_off_charge_battery();
684 }
685
686 sharpsl_pm.machinfo->presuspend();
687
688 PEDR = 0xffffffff; /* clear it */
689
690 sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
691 if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
692 RTSR &= RTSR_ALE;
693 RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
694 dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR);
695 sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
696 } else if (alarm_enable) {
697 RTSR &= RTSR_ALE;
698 RTAR = alarm_time;
699 dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR);
700 } else {
701 dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
702 }
703
704 pxa_pm_enter(state);
705
706 sharpsl_pm.machinfo->postsuspend();
707
708 dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR);
709}
710
711static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
712{
713 if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) )
714 {
715 if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
716 dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
717 corgi_goto_sleep(alarm_time, alarm_enable, state);
718 return 1;
719 }
720 if(sharpsl_off_charge_battery()) {
721 dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
722 corgi_goto_sleep(alarm_time, alarm_enable, state);
723 return 1;
724 }
725 dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
726 }
727
728 if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) )
729 {
730 dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n");
731 corgi_goto_sleep(alarm_time, alarm_enable, state);
732 return 1;
733 }
734
735 return 0;
736}
737
738static int corgi_pxa_pm_enter(suspend_state_t state)
739{
740 unsigned long alarm_time = RTAR;
741 unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0);
742
743 dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n");
744
745 corgi_goto_sleep(alarm_time, alarm_status, state);
746
747 while (corgi_enter_suspend(alarm_time,alarm_status,state))
748 {}
749
750 if (sharpsl_pm.machinfo->earlyresume)
751 sharpsl_pm.machinfo->earlyresume();
752
753 dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n");
754
755 return 0;
756}
757
758/*
759 * Check for fatal battery errors
760 * Fatal returns -1
761 */
762static int sharpsl_fatal_check(void)
763{
764 int buff[5], temp, i, acin;
765
766 dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n");
767
768 /* Check AC-Adapter */
769 acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
770
771 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
772 sharpsl_pm.machinfo->charge(0);
773 udelay(100);
774 sharpsl_pm.machinfo->discharge(1); /* enable discharge */
775 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
776 }
777
778 if (sharpsl_pm.machinfo->discharge1)
779 sharpsl_pm.machinfo->discharge1(1);
780
781 /* Check battery : check inserting battery ? */
782 for (i=0; i<5; i++) {
783 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
784 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
785 }
786
787 if (sharpsl_pm.machinfo->discharge1)
788 sharpsl_pm.machinfo->discharge1(0);
789
790 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
791 udelay(100);
792 sharpsl_pm.machinfo->charge(1);
793 sharpsl_pm.machinfo->discharge(0);
794 }
795
796 temp = get_select_val(buff);
797 dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check: acin: %d, discharge voltage: %d, no discharge: %ld\n", acin, temp, sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT));
798
799 if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) ||
800 (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt)))
801 return -1;
802 return 0;
803}
804
805static int sharpsl_off_charge_error(void)
806{
807 dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n");
808 sharpsl_pm.machinfo->charge(0);
809 sharpsl_pm_led(SHARPSL_LED_ERROR);
810 sharpsl_pm.charge_mode = CHRG_ERROR;
811 return 1;
812}
813
814/*
815 * Charging Control while suspended
816 * Return 1 - go straight to sleep
817 * Return 0 - sleep or wakeup depending on other factors
818 */
819static int sharpsl_off_charge_battery(void)
820{
821 int time;
822
823 dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode);
824
825 if (sharpsl_pm.charge_mode == CHRG_OFF) {
826 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n");
827
828 /* AC Check */
829 if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0))
830 return sharpsl_off_charge_error();
831
832 /* Start Charging */
833 sharpsl_pm_led(SHARPSL_LED_ON);
834 sharpsl_pm.machinfo->charge(0);
835 mdelay(SHARPSL_CHARGE_WAIT_TIME);
836 sharpsl_pm.machinfo->charge(1);
837
838 sharpsl_pm.charge_mode = CHRG_ON;
839 sharpsl_pm.full_count = 0;
840
841 return 1;
842 } else if (sharpsl_pm.charge_mode != CHRG_ON) {
843 return 1;
844 }
845
846 if (sharpsl_pm.full_count == 0) {
847 int time;
848
849 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n");
850
851 if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0))
852 return sharpsl_off_charge_error();
853
854 sharpsl_pm.machinfo->charge(0);
855 mdelay(SHARPSL_CHARGE_WAIT_TIME);
856 sharpsl_pm.machinfo->charge(1);
857 sharpsl_pm.charge_mode = CHRG_ON;
858
859 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
860
861 time = RCNR;
862 while(1) {
863 /* Check if any wakeup event had occurred */
864 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
865 return 0;
866 /* Check for timeout */
867 if ((RCNR - time) > SHARPSL_WAIT_CO_TIME)
868 return 1;
869 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
870 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n");
871 sharpsl_pm.full_count++;
872 sharpsl_pm.machinfo->charge(0);
873 mdelay(SHARPSL_CHARGE_WAIT_TIME);
874 sharpsl_pm.machinfo->charge(1);
875 return 1;
876 }
877 }
878 }
879
880 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n");
881
882 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
883
884 time = RCNR;
885 while(1) {
886 /* Check if any wakeup event had occurred */
887 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
888 return 0;
889 /* Check for timeout */
890 if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
891 if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
892 dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
893 sharpsl_pm.full_count = 0;
894 }
895 sharpsl_pm.full_count++;
896 return 1;
897 }
898 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
899 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
900 sharpsl_pm_led(SHARPSL_LED_OFF);
901 sharpsl_pm.machinfo->charge(0);
902 sharpsl_pm.charge_mode = CHRG_DONE;
903 return 1;
904 }
905 }
906}
907#else
908#define sharpsl_pm_suspend NULL
909#define sharpsl_pm_resume NULL
910#endif
911
912static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
913{
914 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent);
915}
916
917static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
918{
919 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage);
920}
921
922static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
923static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
924
925extern void (*apm_get_power_status)(struct apm_power_info *);
926
927static void sharpsl_apm_get_power_status(struct apm_power_info *info)
928{
929 info->ac_line_status = sharpsl_pm.battstat.ac_status;
930
931 if (sharpsl_pm.charge_mode == CHRG_ON)
932 info->battery_status = APM_BATTERY_STATUS_CHARGING;
933 else
934 info->battery_status = sharpsl_pm.battstat.mainbat_status;
935
936 info->battery_flag = (1 << info->battery_status);
937 info->battery_life = sharpsl_pm.battstat.mainbat_percent;
938}
939
940#ifdef CONFIG_PM
941static struct platform_suspend_ops sharpsl_pm_ops = {
942 .enter = corgi_pxa_pm_enter,
943 .valid = suspend_valid_only_mem,
944};
945#endif
946
947static int __init sharpsl_pm_probe(struct platform_device *pdev)
948{
949 int ret;
950
951 if (!pdev->dev.platform_data)
952 return -EINVAL;
953
954 sharpsl_pm.dev = &pdev->dev;
955 sharpsl_pm.machinfo = pdev->dev.platform_data;
956 sharpsl_pm.charge_mode = CHRG_OFF;
957 sharpsl_pm.flags = 0;
958
959 init_timer(&sharpsl_pm.ac_timer);
960 sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
961
962 init_timer(&sharpsl_pm.chrg_full_timer);
963 sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
964
965 led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
966
967 sharpsl_pm.machinfo->init();
968
969 ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage);
970 ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
971 if (ret != 0)
972 dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret);
973
974 apm_get_power_status = sharpsl_apm_get_power_status;
975
976#ifdef CONFIG_PM
977 suspend_set_ops(&sharpsl_pm_ops);
978#endif
979
980 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
981
982 return 0;
983}
984
985static int sharpsl_pm_remove(struct platform_device *pdev)
986{
987 suspend_set_ops(NULL);
988
989 device_remove_file(&pdev->dev, &dev_attr_battery_percentage);
990 device_remove_file(&pdev->dev, &dev_attr_battery_voltage);
991
992 led_trigger_unregister_simple(sharpsl_charge_led_trigger);
993
994 sharpsl_pm.machinfo->exit();
995
996 del_timer_sync(&sharpsl_pm.chrg_full_timer);
997 del_timer_sync(&sharpsl_pm.ac_timer);
998
999 return 0;
1000}
1001
1002static struct platform_driver sharpsl_pm_driver = {
1003 .probe = sharpsl_pm_probe,
1004 .remove = sharpsl_pm_remove,
1005 .suspend = sharpsl_pm_suspend,
1006 .resume = sharpsl_pm_resume,
1007 .driver = {
1008 .name = "sharpsl-pm",
1009 },
1010};
1011
1012static int __devinit sharpsl_pm_init(void)
1013{
1014 return platform_driver_register(&sharpsl_pm_driver);
1015}
1016
1017static void sharpsl_pm_exit(void)
1018{
1019 platform_driver_unregister(&sharpsl_pm_driver);
1020}
1021
1022late_initcall(sharpsl_pm_init);
1023module_exit(sharpsl_pm_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-15 17:02:16 -0500