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-rw-r--r--arch/arm/mach-pxa/sharpsl_pm.c863
1 files changed, 847 insertions, 16 deletions
diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-pxa/sharpsl_pm.c
index 16b4ec67e3b6..2546c066cd6e 100644
--- a/arch/arm/mach-pxa/sharpsl_pm.c
+++ b/arch/arm/mach-pxa/sharpsl_pm.c
@@ -15,20 +15,69 @@
15#undef DEBUG 15#undef DEBUG
16 16
17#include <linux/module.h> 17#include <linux/module.h>
18#include <linux/init.h>
19#include <linux/kernel.h> 18#include <linux/kernel.h>
20#include <linux/interrupt.h> 19#include <linux/interrupt.h>
21#include <linux/irq.h>
22#include <linux/platform_device.h> 20#include <linux/platform_device.h>
23#include <linux/apm-emulation.h> 21#include <linux/apm-emulation.h>
22#include <linux/timer.h>
23#include <linux/delay.h>
24#include <linux/leds.h>
25#include <linux/suspend.h>
26#include <linux/gpio.h>
24 27
25#include <mach/hardware.h>
26#include <asm/mach-types.h> 28#include <asm/mach-types.h>
27#include <mach/pm.h> 29#include <mach/pm.h>
30#include <mach/pxa2xx-regs.h>
28#include <mach/pxa2xx-gpio.h> 31#include <mach/pxa2xx-gpio.h>
32#include <mach/regs-rtc.h>
29#include <mach/sharpsl.h> 33#include <mach/sharpsl.h>
34#include <mach/sharpsl_pm.h>
35
30#include "sharpsl.h" 36#include "sharpsl.h"
31 37
38/*
39 * Constants
40 */
41#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */
42#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */
43#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */
44#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */
45
46#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */
47#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */
48#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */
49#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */
50#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */
51#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */
52#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */
53#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */
54
55/*
56 * Prototypes
57 */
58#ifdef CONFIG_PM
59static int sharpsl_off_charge_battery(void);
60static int sharpsl_check_battery_voltage(void);
61static int sharpsl_fatal_check(void);
62#endif
63static int sharpsl_check_battery_temp(void);
64static int sharpsl_ac_check(void);
65static int sharpsl_average_value(int ad);
66static void sharpsl_average_clear(void);
67static void sharpsl_charge_toggle(struct work_struct *private_);
68static void sharpsl_battery_thread(struct work_struct *private_);
69
70
71/*
72 * Variables
73 */
74struct sharpsl_pm_status sharpsl_pm;
75static DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
76static DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
77DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
78
79
80
32struct battery_thresh spitz_battery_levels_acin[] = { 81struct battery_thresh spitz_battery_levels_acin[] = {
33 { 213, 100}, 82 { 213, 100},
34 { 212, 98}, 83 { 212, 98},
@@ -144,42 +193,789 @@ int sharpsl_pm_pxa_read_max1111(int channel)
144#endif 193#endif
145} 194}
146 195
147void sharpsl_pm_pxa_init(void) 196static int get_percentage(int voltage)
197{
198 int i = sharpsl_pm.machinfo->bat_levels - 1;
199 int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
200 struct battery_thresh *thresh;
201
202 if (sharpsl_pm.charge_mode == CHRG_ON)
203 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
204 else
205 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
206
207 while (i > 0 && (voltage > thresh[i].voltage))
208 i--;
209
210 return thresh[i].percentage;
211}
212
213static int get_apm_status(int voltage)
214{
215 int low_thresh, high_thresh;
216
217 if (sharpsl_pm.charge_mode == CHRG_ON) {
218 high_thresh = sharpsl_pm.machinfo->status_high_acin;
219 low_thresh = sharpsl_pm.machinfo->status_low_acin;
220 } else {
221 high_thresh = sharpsl_pm.machinfo->status_high_noac;
222 low_thresh = sharpsl_pm.machinfo->status_low_noac;
223 }
224
225 if (voltage >= high_thresh)
226 return APM_BATTERY_STATUS_HIGH;
227 if (voltage >= low_thresh)
228 return APM_BATTERY_STATUS_LOW;
229 return APM_BATTERY_STATUS_CRITICAL;
230}
231
232void sharpsl_battery_kick(void)
233{
234 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
235}
236EXPORT_SYMBOL(sharpsl_battery_kick);
237
238
239static void sharpsl_battery_thread(struct work_struct *private_)
240{
241 int voltage, percent, apm_status, i = 0;
242
243 if (!sharpsl_pm.machinfo)
244 return;
245
246 sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
247
248 /* Corgi cannot confirm when battery fully charged so periodically kick! */
249 if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
250 && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
251 schedule_delayed_work(&toggle_charger, 0);
252
253 while(1) {
254 voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
255
256 if (voltage > 0) break;
257 if (i++ > 5) {
258 voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
259 dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
260 break;
261 }
262 }
263
264 voltage = sharpsl_average_value(voltage);
265 apm_status = get_apm_status(voltage);
266 percent = get_percentage(voltage);
267
268 /* At low battery voltages, the voltage has a tendency to start
269 creeping back up so we try to avoid this here */
270 if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) {
271 sharpsl_pm.battstat.mainbat_voltage = voltage;
272 sharpsl_pm.battstat.mainbat_status = apm_status;
273 sharpsl_pm.battstat.mainbat_percent = percent;
274 }
275
276 dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
277 sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
278
279#ifdef CONFIG_BACKLIGHT_CORGI
280 /* If battery is low. limit backlight intensity to save power. */
281 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
282 && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) ||
283 (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
284 if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) {
285 sharpsl_pm.machinfo->backlight_limit(1);
286 sharpsl_pm.flags |= SHARPSL_BL_LIMIT;
287 }
288 } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) {
289 sharpsl_pm.machinfo->backlight_limit(0);
290 sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT;
291 }
292#endif
293
294 /* Suspend if critical battery level */
295 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
296 && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
297 && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
298 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
299 dev_err(sharpsl_pm.dev, "Fatal Off\n");
300 apm_queue_event(APM_CRITICAL_SUSPEND);
301 }
302
303 schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
304}
305
306void sharpsl_pm_led(int val)
307{
308 if (val == SHARPSL_LED_ERROR) {
309 dev_err(sharpsl_pm.dev, "Charging Error!\n");
310 } else if (val == SHARPSL_LED_ON) {
311 dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
312 led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
313 } else {
314 dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
315 led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
316 }
317}
318
319static void sharpsl_charge_on(void)
320{
321 dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
322
323 sharpsl_pm.full_count = 0;
324 sharpsl_pm.charge_mode = CHRG_ON;
325 schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
326 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
327}
328
329static void sharpsl_charge_off(void)
330{
331 dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
332
333 sharpsl_pm.machinfo->charge(0);
334 sharpsl_pm_led(SHARPSL_LED_OFF);
335 sharpsl_pm.charge_mode = CHRG_OFF;
336
337 schedule_delayed_work(&sharpsl_bat, 0);
338}
339
340static void sharpsl_charge_error(void)
148{ 341{
149 pxa_gpio_mode(sharpsl_pm.machinfo->gpio_acin | GPIO_IN); 342 sharpsl_pm_led(SHARPSL_LED_ERROR);
150 pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batfull | GPIO_IN); 343 sharpsl_pm.machinfo->charge(0);
151 pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batlock | GPIO_IN); 344 sharpsl_pm.charge_mode = CHRG_ERROR;
345}
346
347static void sharpsl_charge_toggle(struct work_struct *private_)
348{
349 dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies);
350
351 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
352 sharpsl_charge_off();
353 return;
354 } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
355 sharpsl_charge_error();
356 return;
357 }
358
359 sharpsl_pm_led(SHARPSL_LED_ON);
360 sharpsl_pm.machinfo->charge(0);
361 mdelay(SHARPSL_CHARGE_WAIT_TIME);
362 sharpsl_pm.machinfo->charge(1);
363
364 sharpsl_pm.charge_start_time = jiffies;
365}
366
367static void sharpsl_ac_timer(unsigned long data)
368{
369 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
370
371 dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin);
372
373 sharpsl_average_clear();
374 if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
375 sharpsl_charge_on();
376 else if (sharpsl_pm.charge_mode == CHRG_ON)
377 sharpsl_charge_off();
378
379 schedule_delayed_work(&sharpsl_bat, 0);
380}
381
382
383static irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
384{
385 /* Delay the event slightly to debounce */
386 /* Must be a smaller delay than the chrg_full_isr below */
387 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
388
389 return IRQ_HANDLED;
390}
391
392static void sharpsl_chrg_full_timer(unsigned long data)
393{
394 dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
395
396 sharpsl_pm.full_count++;
397
398 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
399 dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
400 if (sharpsl_pm.charge_mode == CHRG_ON)
401 sharpsl_charge_off();
402 } else if (sharpsl_pm.full_count < 2) {
403 dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
404 schedule_delayed_work(&toggle_charger, 0);
405 } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
406 dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
407 schedule_delayed_work(&toggle_charger, 0);
408 } else {
409 sharpsl_charge_off();
410 sharpsl_pm.charge_mode = CHRG_DONE;
411 dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
412 }
413}
414
415/* Charging Finished Interrupt (Not present on Corgi) */
416/* Can trigger at the same time as an AC status change so
417 delay until after that has been processed */
418static irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
419{
420 if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
421 return IRQ_HANDLED;
422
423 /* delay until after any ac interrupt */
424 mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
425
426 return IRQ_HANDLED;
427}
428
429static irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
430{
431 int is_fatal = 0;
432
433 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
434 dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
435 is_fatal = 1;
436 }
437
438 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
439 dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
440 is_fatal = 1;
441 }
442
443 if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
444 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
445 apm_queue_event(APM_CRITICAL_SUSPEND);
446 }
447
448 return IRQ_HANDLED;
449}
450
451/*
452 * Maintain an average of the last 10 readings
453 */
454#define SHARPSL_CNV_VALUE_NUM 10
455static int sharpsl_ad_index;
456
457static void sharpsl_average_clear(void)
458{
459 sharpsl_ad_index = 0;
460}
461
462static int sharpsl_average_value(int ad)
463{
464 int i, ad_val = 0;
465 static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
466
467 if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
468 sharpsl_ad_index = 0;
469 return ad;
470 }
471
472 sharpsl_ad[sharpsl_ad_index] = ad;
473 sharpsl_ad_index++;
474 if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
475 for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
476 sharpsl_ad[i] = sharpsl_ad[i+1];
477 sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
478 }
479 for (i=0; i < sharpsl_ad_index; i++)
480 ad_val += sharpsl_ad[i];
481
482 return (ad_val / sharpsl_ad_index);
483}
484
485/*
486 * Take an array of 5 integers, remove the maximum and minimum values
487 * and return the average.
488 */
489static int get_select_val(int *val)
490{
491 int i, j, k, temp, sum = 0;
492
493 /* Find MAX val */
494 temp = val[0];
495 j=0;
496 for (i=1; i<5; i++) {
497 if (temp < val[i]) {
498 temp = val[i];
499 j = i;
500 }
501 }
502
503 /* Find MIN val */
504 temp = val[4];
505 k=4;
506 for (i=3; i>=0; i--) {
507 if (temp > val[i]) {
508 temp = val[i];
509 k = i;
510 }
511 }
512
513 for (i=0; i<5; i++)
514 if (i != j && i != k )
515 sum += val[i];
516
517 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]);
518
519 return (sum/3);
520}
521
522static int sharpsl_check_battery_temp(void)
523{
524 int val, i, buff[5];
525
526 /* Check battery temperature */
527 for (i=0; i<5; i++) {
528 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
529 sharpsl_pm.machinfo->measure_temp(1);
530 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
531 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
532 sharpsl_pm.machinfo->measure_temp(0);
533 }
534
535 val = get_select_val(buff);
536
537 dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
538 if (val > sharpsl_pm.machinfo->charge_on_temp) {
539 printk(KERN_WARNING "Not charging: temperature out of limits.\n");
540 return -1;
541 }
542
543 return 0;
544}
545
546#ifdef CONFIG_PM
547static int sharpsl_check_battery_voltage(void)
548{
549 int val, i, buff[5];
550
551 /* disable charge, enable discharge */
552 sharpsl_pm.machinfo->charge(0);
553 sharpsl_pm.machinfo->discharge(1);
554 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
555
556 if (sharpsl_pm.machinfo->discharge1)
557 sharpsl_pm.machinfo->discharge1(1);
558
559 /* Check battery voltage */
560 for (i=0; i<5; i++) {
561 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
562 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
563 }
564
565 if (sharpsl_pm.machinfo->discharge1)
566 sharpsl_pm.machinfo->discharge1(0);
567
568 sharpsl_pm.machinfo->discharge(0);
569
570 val = get_select_val(buff);
571 dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
572
573 if (val < sharpsl_pm.machinfo->charge_on_volt)
574 return -1;
575
576 return 0;
577}
578#endif
579
580static int sharpsl_ac_check(void)
581{
582 int temp, i, buff[5];
583
584 for (i=0; i<5; i++) {
585 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
586 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
587 }
588
589 temp = get_select_val(buff);
590 dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp);
591
592 if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
593 dev_err(sharpsl_pm.dev, "Error: AC check failed.\n");
594 return -1;
595 }
596
597 return 0;
598}
599
600#ifdef CONFIG_PM
601static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
602{
603 sharpsl_pm.flags |= SHARPSL_SUSPENDED;
604 flush_scheduled_work();
605
606 if (sharpsl_pm.charge_mode == CHRG_ON)
607 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
608 else
609 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
610
611 return 0;
612}
613
614static int sharpsl_pm_resume(struct platform_device *pdev)
615{
616 /* Clear the reset source indicators as they break the bootloader upon reboot */
617 RCSR = 0x0f;
618 sharpsl_average_clear();
619 sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
620 sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
621
622 return 0;
623}
624
625static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
626{
627 dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR);
628
629 dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
630 /* not charging and AC-IN! */
631
632 if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
633 dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
634 sharpsl_pm.charge_mode = CHRG_OFF;
635 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
636 sharpsl_off_charge_battery();
637 }
638
639 sharpsl_pm.machinfo->presuspend();
640
641 PEDR = 0xffffffff; /* clear it */
642
643 sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
644 if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
645 RTSR &= RTSR_ALE;
646 RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
647 dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR);
648 sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
649 } else if (alarm_enable) {
650 RTSR &= RTSR_ALE;
651 RTAR = alarm_time;
652 dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR);
653 } else {
654 dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
655 }
656
657 pxa_pm_enter(state);
658
659 sharpsl_pm.machinfo->postsuspend();
660
661 dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR);
662}
663
664static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
665{
666 if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) )
667 {
668 if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
669 dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
670 corgi_goto_sleep(alarm_time, alarm_enable, state);
671 return 1;
672 }
673 if(sharpsl_off_charge_battery()) {
674 dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
675 corgi_goto_sleep(alarm_time, alarm_enable, state);
676 return 1;
677 }
678 dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
679 }
680
681 if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) )
682 {
683 dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n");
684 corgi_goto_sleep(alarm_time, alarm_enable, state);
685 return 1;
686 }
687
688 return 0;
689}
690
691static int corgi_pxa_pm_enter(suspend_state_t state)
692{
693 unsigned long alarm_time = RTAR;
694 unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0);
695
696 dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n");
697
698 corgi_goto_sleep(alarm_time, alarm_status, state);
699
700 while (corgi_enter_suspend(alarm_time,alarm_status,state))
701 {}
702
703 if (sharpsl_pm.machinfo->earlyresume)
704 sharpsl_pm.machinfo->earlyresume();
705
706 dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n");
707
708 return 0;
709}
710
711/*
712 * Check for fatal battery errors
713 * Fatal returns -1
714 */
715static int sharpsl_fatal_check(void)
716{
717 int buff[5], temp, i, acin;
718
719 dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n");
720
721 /* Check AC-Adapter */
722 acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
723
724 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
725 sharpsl_pm.machinfo->charge(0);
726 udelay(100);
727 sharpsl_pm.machinfo->discharge(1); /* enable discharge */
728 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
729 }
730
731 if (sharpsl_pm.machinfo->discharge1)
732 sharpsl_pm.machinfo->discharge1(1);
733
734 /* Check battery : check inserting battery ? */
735 for (i=0; i<5; i++) {
736 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
737 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
738 }
739
740 if (sharpsl_pm.machinfo->discharge1)
741 sharpsl_pm.machinfo->discharge1(0);
742
743 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
744 udelay(100);
745 sharpsl_pm.machinfo->charge(1);
746 sharpsl_pm.machinfo->discharge(0);
747 }
748
749 temp = get_select_val(buff);
750 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));
751
752 if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) ||
753 (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt)))
754 return -1;
755 return 0;
756}
757
758static int sharpsl_off_charge_error(void)
759{
760 dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n");
761 sharpsl_pm.machinfo->charge(0);
762 sharpsl_pm_led(SHARPSL_LED_ERROR);
763 sharpsl_pm.charge_mode = CHRG_ERROR;
764 return 1;
765}
766
767/*
768 * Charging Control while suspended
769 * Return 1 - go straight to sleep
770 * Return 0 - sleep or wakeup depending on other factors
771 */
772static int sharpsl_off_charge_battery(void)
773{
774 int time;
775
776 dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode);
777
778 if (sharpsl_pm.charge_mode == CHRG_OFF) {
779 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n");
780
781 /* AC Check */
782 if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0))
783 return sharpsl_off_charge_error();
784
785 /* Start Charging */
786 sharpsl_pm_led(SHARPSL_LED_ON);
787 sharpsl_pm.machinfo->charge(0);
788 mdelay(SHARPSL_CHARGE_WAIT_TIME);
789 sharpsl_pm.machinfo->charge(1);
790
791 sharpsl_pm.charge_mode = CHRG_ON;
792 sharpsl_pm.full_count = 0;
793
794 return 1;
795 } else if (sharpsl_pm.charge_mode != CHRG_ON) {
796 return 1;
797 }
798
799 if (sharpsl_pm.full_count == 0) {
800 int time;
801
802 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n");
803
804 if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0))
805 return sharpsl_off_charge_error();
806
807 sharpsl_pm.machinfo->charge(0);
808 mdelay(SHARPSL_CHARGE_WAIT_TIME);
809 sharpsl_pm.machinfo->charge(1);
810 sharpsl_pm.charge_mode = CHRG_ON;
811
812 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
813
814 time = RCNR;
815 while(1) {
816 /* Check if any wakeup event had occurred */
817 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
818 return 0;
819 /* Check for timeout */
820 if ((RCNR - time) > SHARPSL_WAIT_CO_TIME)
821 return 1;
822 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
823 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n");
824 sharpsl_pm.full_count++;
825 sharpsl_pm.machinfo->charge(0);
826 mdelay(SHARPSL_CHARGE_WAIT_TIME);
827 sharpsl_pm.machinfo->charge(1);
828 return 1;
829 }
830 }
831 }
832
833 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n");
834
835 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
836
837 time = RCNR;
838 while(1) {
839 /* Check if any wakeup event had occurred */
840 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
841 return 0;
842 /* Check for timeout */
843 if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
844 if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
845 dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
846 sharpsl_pm.full_count = 0;
847 }
848 sharpsl_pm.full_count++;
849 return 1;
850 }
851 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
852 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
853 sharpsl_pm_led(SHARPSL_LED_OFF);
854 sharpsl_pm.machinfo->charge(0);
855 sharpsl_pm.charge_mode = CHRG_DONE;
856 return 1;
857 }
858 }
859}
860#else
861#define sharpsl_pm_suspend NULL
862#define sharpsl_pm_resume NULL
863#endif
864
865static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
866{
867 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent);
868}
869
870static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
871{
872 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage);
873}
874
875static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
876static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
877
878extern void (*apm_get_power_status)(struct apm_power_info *);
879
880static void sharpsl_apm_get_power_status(struct apm_power_info *info)
881{
882 info->ac_line_status = sharpsl_pm.battstat.ac_status;
883
884 if (sharpsl_pm.charge_mode == CHRG_ON)
885 info->battery_status = APM_BATTERY_STATUS_CHARGING;
886 else
887 info->battery_status = sharpsl_pm.battstat.mainbat_status;
888
889 info->battery_flag = (1 << info->battery_status);
890 info->battery_life = sharpsl_pm.battstat.mainbat_percent;
891}
892
893#ifdef CONFIG_PM
894static struct platform_suspend_ops sharpsl_pm_ops = {
895 .prepare = pxa_pm_prepare,
896 .finish = pxa_pm_finish,
897 .enter = corgi_pxa_pm_enter,
898 .valid = suspend_valid_only_mem,
899};
900#endif
901
902static int __init sharpsl_pm_probe(struct platform_device *pdev)
903{
904 int ret;
905
906 if (!pdev->dev.platform_data)
907 return -EINVAL;
908
909 sharpsl_pm.dev = &pdev->dev;
910 sharpsl_pm.machinfo = pdev->dev.platform_data;
911 sharpsl_pm.charge_mode = CHRG_OFF;
912 sharpsl_pm.flags = 0;
913
914 init_timer(&sharpsl_pm.ac_timer);
915 sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
916
917 init_timer(&sharpsl_pm.chrg_full_timer);
918 sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
919
920 led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
921
922 sharpsl_pm.machinfo->init();
923
924 gpio_request(sharpsl_pm.machinfo->gpio_acin, "AC IN");
925 gpio_direction_input(sharpsl_pm.machinfo->gpio_acin);
926 gpio_request(sharpsl_pm.machinfo->gpio_batfull, "Battery Full");
927 gpio_direction_input(sharpsl_pm.machinfo->gpio_batfull);
928 gpio_request(sharpsl_pm.machinfo->gpio_batlock, "Battery Lock");
929 gpio_direction_input(sharpsl_pm.machinfo->gpio_batlock);
152 930
153 /* Register interrupt handlers */ 931 /* Register interrupt handlers */
154 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr, IRQF_DISABLED, "AC Input Detect", sharpsl_ac_isr)) { 932 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "AC Input Detect", sharpsl_ac_isr)) {
155 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin)); 933 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin));
156 } 934 }
157 else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin),IRQ_TYPE_EDGE_BOTH);
158 935
159 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr, IRQF_DISABLED, "Battery Cover", sharpsl_fatal_isr)) { 936 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Battery Cover", sharpsl_fatal_isr)) {
160 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock)); 937 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock));
161 } 938 }
162 else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock),IRQ_TYPE_EDGE_FALLING);
163 939
164 if (sharpsl_pm.machinfo->gpio_fatal) { 940 if (sharpsl_pm.machinfo->gpio_fatal) {
165 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr, IRQF_DISABLED, "Fatal Battery", sharpsl_fatal_isr)) { 941 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Fatal Battery", sharpsl_fatal_isr)) {
166 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal)); 942 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal));
167 } 943 }
168 else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal),IRQ_TYPE_EDGE_FALLING);
169 } 944 }
170 945
171 if (sharpsl_pm.machinfo->batfull_irq) 946 if (sharpsl_pm.machinfo->batfull_irq)
172 { 947 {
173 /* Register interrupt handler. */ 948 /* Register interrupt handler. */
174 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, IRQF_DISABLED, "CO", sharpsl_chrg_full_isr)) { 949 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING, "CO", sharpsl_chrg_full_isr)) {
175 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull)); 950 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull));
176 } 951 }
177 else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull),IRQ_TYPE_EDGE_RISING);
178 } 952 }
953
954 ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage);
955 ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
956 if (ret != 0)
957 dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret);
958
959 apm_get_power_status = sharpsl_apm_get_power_status;
960
961#ifdef CONFIG_PM
962 suspend_set_ops(&sharpsl_pm_ops);
963#endif
964
965 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
966
967 return 0;
179} 968}
180 969
181void sharpsl_pm_pxa_remove(void) 970static int sharpsl_pm_remove(struct platform_device *pdev)
182{ 971{
972 suspend_set_ops(NULL);
973
974 device_remove_file(&pdev->dev, &dev_attr_battery_percentage);
975 device_remove_file(&pdev->dev, &dev_attr_battery_voltage);
976
977 led_trigger_unregister_simple(sharpsl_charge_led_trigger);
978
183 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr); 979 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr);
184 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr); 980 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr);
185 981
@@ -188,4 +984,39 @@ void sharpsl_pm_pxa_remove(void)
188 984
189 if (sharpsl_pm.machinfo->batfull_irq) 985 if (sharpsl_pm.machinfo->batfull_irq)
190 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr); 986 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr);
987
988 gpio_free(sharpsl_pm.machinfo->gpio_batlock);
989 gpio_free(sharpsl_pm.machinfo->gpio_batfull);
990 gpio_free(sharpsl_pm.machinfo->gpio_acin);
991
992 if (sharpsl_pm.machinfo->exit)
993 sharpsl_pm.machinfo->exit();
994
995 del_timer_sync(&sharpsl_pm.chrg_full_timer);
996 del_timer_sync(&sharpsl_pm.ac_timer);
997
998 return 0;
191} 999}
1000
1001static struct platform_driver sharpsl_pm_driver = {
1002 .probe = sharpsl_pm_probe,
1003 .remove = sharpsl_pm_remove,
1004 .suspend = sharpsl_pm_suspend,
1005 .resume = sharpsl_pm_resume,
1006 .driver = {
1007 .name = "sharpsl-pm",
1008 },
1009};
1010
1011static int __devinit sharpsl_pm_init(void)
1012{
1013 return platform_driver_register(&sharpsl_pm_driver);
1014}
1015
1016static void sharpsl_pm_exit(void)
1017{
1018 platform_driver_unregister(&sharpsl_pm_driver);
1019}
1020
1021late_initcall(sharpsl_pm_init);
1022module_exit(sharpsl_pm_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-20 19:10:09 -0500