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ARM: pxa: use common IOMEM definition
[deliverable/linux.git] / arch / arm / mach-pxa / sharpsl_pm.c
CommitLineData
078abcf9
RP		 1/*
2 * Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00
3 * series of PDAs
4 *
5 * Copyright (c) 2004-2005 Richard Purdie
6 *
7 * Based on code written by Sharp for 2.4 kernels
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 */
14
15#undef DEBUG
16
17#include <linux/module.h>
078abcf9 18#include <linux/kernel.h>
078abcf9 19#include <linux/interrupt.h>
c5e1ae97 20#include <linux/platform_device.h>
61fde514 21#include <linux/apm-emulation.h>
78731d33 22#include <linux/timer.h>
78731d33
DES		 23#include <linux/delay.h>
24#include <linux/leds.h>
25#include <linux/suspend.h>
d5af2778 26#include <linux/gpio.h>
23019a73 27#include <linux/io.h>
078abcf9 28
078abcf9 29#include <asm/mach-types.h>
a09e64fb 30#include <mach/pm.h>
78731d33 31#include <mach/pxa2xx-regs.h>
78731d33 32#include <mach/regs-rtc.h>
78731d33
DES		 33#include <mach/sharpsl_pm.h>
34
35/*
36 * Constants
37 */
38#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */
39#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */
40#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */
41#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */
42
43#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */
44#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */
45#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */
46#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */
47#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */
48#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */
49#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */
50#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */
51
52/*
53 * Prototypes
54 */
55#ifdef CONFIG_PM
56static int sharpsl_off_charge_battery(void);
57static int sharpsl_check_battery_voltage(void);
58static int sharpsl_fatal_check(void);
59#endif
60static int sharpsl_check_battery_temp(void);
61static int sharpsl_ac_check(void);
62static int sharpsl_average_value(int ad);
63static void sharpsl_average_clear(void);
64static void sharpsl_charge_toggle(struct work_struct *private_);
65static void sharpsl_battery_thread(struct work_struct *private_);
66
67
68/*
69 * Variables
70 */
71struct sharpsl_pm_status sharpsl_pm;
d48898a3
DES		 72static DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
73static DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
78731d33
DES		 74DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
75
76
078abcf9 77
0ba01ebc 78struct battery_thresh sharpsl_battery_levels_acin[] = {
078abcf9
RP		 79 { 213, 100},
80 { 212, 98},
81 { 211, 95},
82 { 210, 93},
83 { 209, 90},
84 { 208, 88},
85 { 207, 85},
86 { 206, 83},
87 { 205, 80},
88 { 204, 78},
89 { 203, 75},
90 { 202, 73},
91 { 201, 70},
92 { 200, 68},
93 { 199, 65},
94 { 198, 63},
95 { 197, 60},
96 { 196, 58},
97 { 195, 55},
98 { 194, 53},
99 { 193, 50},
100 { 192, 48},
101 { 192, 45},
102 { 191, 43},
103 { 191, 40},
104 { 190, 38},
105 { 190, 35},
106 { 189, 33},
107 { 188, 30},
108 { 187, 28},
109 { 186, 25},
110 { 185, 23},
111 { 184, 20},
112 { 183, 18},
113 { 182, 15},
114 { 181, 13},
115 { 180, 10},
116 { 179, 8},
117 { 178, 5},
118 { 0, 0},
119};
120
0ba01ebc 121struct battery_thresh sharpsl_battery_levels_noac[] = {
078abcf9
RP		 122 { 213, 100},
123 { 212, 98},
124 { 211, 95},
125 { 210, 93},
126 { 209, 90},
127 { 208, 88},
128 { 207, 85},
129 { 206, 83},
130 { 205, 80},
131 { 204, 78},
132 { 203, 75},
133 { 202, 73},
134 { 201, 70},
135 { 200, 68},
136 { 199, 65},
137 { 198, 63},
138 { 197, 60},
139 { 196, 58},
140 { 195, 55},
141 { 194, 53},
142 { 193, 50},
143 { 192, 48},
144 { 191, 45},
145 { 190, 43},
146 { 189, 40},
147 { 188, 38},
148 { 187, 35},
149 { 186, 33},
150 { 185, 30},
151 { 184, 28},
152 { 183, 25},
153 { 182, 23},
154 { 181, 20},
155 { 180, 18},
156 { 179, 15},
157 { 178, 13},
158 { 177, 10},
159 { 176, 8},
160 { 175, 5},
161 { 0, 0},
162};
163
25af3b0f 164/* MAX1111 Commands */
b64b0b76
PM		 165#define MAXCTRL_PD0 (1u << 0)
166#define MAXCTRL_PD1 (1u << 1)
167#define MAXCTRL_SGL (1u << 2)
168#define MAXCTRL_UNI (1u << 3)
25af3b0f 169#define MAXCTRL_SEL_SH 4
b64b0b76 170#define MAXCTRL_STR (1u << 7)
25af3b0f 171
078abcf9
RP		 172/*
173 * Read MAX1111 ADC
174 */
b7557de4 175int sharpsl_pm_pxa_read_max1111(int channel)
078abcf9 176{
b64b0b76
PM		 177 /* Ugly, better move this function into another module */
178 if (machine_is_tosa())
f8703dc8
RP		 179 return 0;
180
25af3b0f
EM		 181 extern int max1111_read_channel(int);
182
f16177c2
EM		 183 /* max1111 accepts channels from 0-3, however,
184 * it is encoded from 0-7 here in the code.
185 */
186 return max1111_read_channel(channel >> 1);
078abcf9
RP		 187}
188
78731d33
DES		 189static int get_percentage(int voltage)
190{
191 int i = sharpsl_pm.machinfo->bat_levels - 1;
192 int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
193 struct battery_thresh *thresh;
194
195 if (sharpsl_pm.charge_mode == CHRG_ON)
196 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
197 else
198 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
199
200 while (i > 0 && (voltage > thresh[i].voltage))
201 i--;
202
203 return thresh[i].percentage;
204}
205
206static int get_apm_status(int voltage)
207{
208 int low_thresh, high_thresh;
209
210 if (sharpsl_pm.charge_mode == CHRG_ON) {
211 high_thresh = sharpsl_pm.machinfo->status_high_acin;
212 low_thresh = sharpsl_pm.machinfo->status_low_acin;
213 } else {
214 high_thresh = sharpsl_pm.machinfo->status_high_noac;
215 low_thresh = sharpsl_pm.machinfo->status_low_noac;
216 }
217
218 if (voltage >= high_thresh)
219 return APM_BATTERY_STATUS_HIGH;
220 if (voltage >= low_thresh)
221 return APM_BATTERY_STATUS_LOW;
222 return APM_BATTERY_STATUS_CRITICAL;
223}
224
225void sharpsl_battery_kick(void)
226{
227 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
228}
229EXPORT_SYMBOL(sharpsl_battery_kick);
230
231
232static void sharpsl_battery_thread(struct work_struct *private_)
233{
b64b0b76 234 int voltage, percent, apm_status, i;
78731d33
DES		 235
236 if (!sharpsl_pm.machinfo)
237 return;
238
239 sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
240
241 /* Corgi cannot confirm when battery fully charged so periodically kick! */
242 if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
243 && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
244 schedule_delayed_work(&toggle_charger, 0);
245
b64b0b76 246 for (i = 0; i < 5; i++) {
78731d33 247 voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
b64b0b76 248 if (voltage > 0)
78731d33 249 break;
b64b0b76
PM		 250 }
251 if (voltage <= 0) {
252 voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
253 dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
78731d33
DES		 254 }
255
256 voltage = sharpsl_average_value(voltage);
257 apm_status = get_apm_status(voltage);
258 percent = get_percentage(voltage);
259
260 /* At low battery voltages, the voltage has a tendency to start
b64b0b76
PM		 261 creeping back up so we try to avoid this here */
262 if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE)
263 || (apm_status == APM_BATTERY_STATUS_HIGH)
264 || percent <= sharpsl_pm.battstat.mainbat_percent) {
78731d33
DES		 265 sharpsl_pm.battstat.mainbat_voltage = voltage;
266 sharpsl_pm.battstat.mainbat_status = apm_status;
267 sharpsl_pm.battstat.mainbat_percent = percent;
268 }
269
270 dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
271 sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
272
78731d33
DES		 273 /* Suspend if critical battery level */
274 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
b64b0b76
PM		 275 && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
276 && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
78731d33
DES		 277 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
278 dev_err(sharpsl_pm.dev, "Fatal Off\n");
279 apm_queue_event(APM_CRITICAL_SUSPEND);
280 }
281
282 schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
283}
284
285void sharpsl_pm_led(int val)
286{
287 if (val == SHARPSL_LED_ERROR) {
288 dev_err(sharpsl_pm.dev, "Charging Error!\n");
289 } else if (val == SHARPSL_LED_ON) {
290 dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
291 led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
292 } else {
293 dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
294 led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
295 }
296}
297
298static void sharpsl_charge_on(void)
299{
300 dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
301
302 sharpsl_pm.full_count = 0;
303 sharpsl_pm.charge_mode = CHRG_ON;
304 schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
305 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
306}
307
308static void sharpsl_charge_off(void)
309{
310 dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
311
312 sharpsl_pm.machinfo->charge(0);
313 sharpsl_pm_led(SHARPSL_LED_OFF);
314 sharpsl_pm.charge_mode = CHRG_OFF;
315
316 schedule_delayed_work(&sharpsl_bat, 0);
317}
318
319static void sharpsl_charge_error(void)
320{
321 sharpsl_pm_led(SHARPSL_LED_ERROR);
322 sharpsl_pm.machinfo->charge(0);
323 sharpsl_pm.charge_mode = CHRG_ERROR;
324}
325
326static void sharpsl_charge_toggle(struct work_struct *private_)
327{
b64b0b76 328 dev_dbg(sharpsl_pm.dev, "Toggling Charger at time: %lx\n", jiffies);
78731d33
DES		 329
330 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
331 sharpsl_charge_off();
332 return;
333 } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
334 sharpsl_charge_error();
335 return;
336 }
337
338 sharpsl_pm_led(SHARPSL_LED_ON);
339 sharpsl_pm.machinfo->charge(0);
340 mdelay(SHARPSL_CHARGE_WAIT_TIME);
341 sharpsl_pm.machinfo->charge(1);
342
343 sharpsl_pm.charge_start_time = jiffies;
344}
345
346static void sharpsl_ac_timer(unsigned long data)
347{
348 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
349
b64b0b76 350 dev_dbg(sharpsl_pm.dev, "AC Status: %d\n", acin);
78731d33
DES		 351
352 sharpsl_average_clear();
353 if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
354 sharpsl_charge_on();
355 else if (sharpsl_pm.charge_mode == CHRG_ON)
356 sharpsl_charge_off();
357
358 schedule_delayed_work(&sharpsl_bat, 0);
359}
360
361
d48898a3 362static irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
78731d33
DES		 363{
364 /* Delay the event slightly to debounce */
365 /* Must be a smaller delay than the chrg_full_isr below */
366 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
367
368 return IRQ_HANDLED;
369}
370
371static void sharpsl_chrg_full_timer(unsigned long data)
372{
373 dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
374
375 sharpsl_pm.full_count++;
376
377 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
378 dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
379 if (sharpsl_pm.charge_mode == CHRG_ON)
380 sharpsl_charge_off();
381 } else if (sharpsl_pm.full_count < 2) {
382 dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
383 schedule_delayed_work(&toggle_charger, 0);
384 } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
385 dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
386 schedule_delayed_work(&toggle_charger, 0);
387 } else {
388 sharpsl_charge_off();
389 sharpsl_pm.charge_mode = CHRG_DONE;
390 dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
391 }
392}
393
394/* Charging Finished Interrupt (Not present on Corgi) */
395/* Can trigger at the same time as an AC status change so
396 delay until after that has been processed */
d48898a3 397static irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
78731d33
DES		 398{
399 if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
400 return IRQ_HANDLED;
401
402 /* delay until after any ac interrupt */
403 mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
404
405 return IRQ_HANDLED;
406}
407
d48898a3 408static irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
78731d33
DES		 409{
410 int is_fatal = 0;
411
412 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
413 dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
414 is_fatal = 1;
415 }
416
417 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
418 dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
419 is_fatal = 1;
420 }
421
422 if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
423 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
424 apm_queue_event(APM_CRITICAL_SUSPEND);
425 }
426
427 return IRQ_HANDLED;
428}
429
430/*
431 * Maintain an average of the last 10 readings
432 */
433#define SHARPSL_CNV_VALUE_NUM 10
434static int sharpsl_ad_index;
435
436static void sharpsl_average_clear(void)
437{
438 sharpsl_ad_index = 0;
439}
440
441static int sharpsl_average_value(int ad)
442{
443 int i, ad_val = 0;
444 static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
445
446 if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
447 sharpsl_ad_index = 0;
448 return ad;
449 }
450
451 sharpsl_ad[sharpsl_ad_index] = ad;
452 sharpsl_ad_index++;
453 if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
b64b0b76 454 for (i = 0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
78731d33
DES		 455 sharpsl_ad[i] = sharpsl_ad[i+1];
456 sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
457 }
b64b0b76 458 for (i = 0; i < sharpsl_ad_index; i++)
78731d33
DES		 459 ad_val += sharpsl_ad[i];
460
b64b0b76 461 return ad_val / sharpsl_ad_index;
78731d33
DES		 462}
463
464/*
465 * Take an array of 5 integers, remove the maximum and minimum values
466 * and return the average.
467 */
468static int get_select_val(int *val)
469{
470 int i, j, k, temp, sum = 0;
471
472 /* Find MAX val */
473 temp = val[0];
b64b0b76
PM		 474 j = 0;
475 for (i = 1; i < 5; i++) {
78731d33
DES		 476 if (temp < val[i]) {
477 temp = val[i];
478 j = i;
479 }
480 }
481
482 /* Find MIN val */
483 temp = val[4];
b64b0b76
PM		 484 k = 4;
485 for (i = 3; i >= 0; i--) {
78731d33
DES		 486 if (temp > val[i]) {
487 temp = val[i];
488 k = i;
489 }
490 }
491
b64b0b76
PM		 492 for (i = 0; i < 5; i++)
493 if (i != j && i != k)
78731d33
DES		 494 sum += val[i];
495
496 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]);
497
b64b0b76 498 return sum/3;
78731d33
DES		 499}
500
501static int sharpsl_check_battery_temp(void)
502{
503 int val, i, buff[5];
504
505 /* Check battery temperature */
b64b0b76 506 for (i = 0; i < 5; i++) {
78731d33
DES		 507 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
508 sharpsl_pm.machinfo->measure_temp(1);
509 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
510 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
511 sharpsl_pm.machinfo->measure_temp(0);
512 }
513
514 val = get_select_val(buff);
515
516 dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
517 if (val > sharpsl_pm.machinfo->charge_on_temp) {
518 printk(KERN_WARNING "Not charging: temperature out of limits.\n");
519 return -1;
520 }
521
522 return 0;
523}
524
525#ifdef CONFIG_PM
526static int sharpsl_check_battery_voltage(void)
527{
528 int val, i, buff[5];
529
530 /* disable charge, enable discharge */
531 sharpsl_pm.machinfo->charge(0);
532 sharpsl_pm.machinfo->discharge(1);
533 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
534
535 if (sharpsl_pm.machinfo->discharge1)
536 sharpsl_pm.machinfo->discharge1(1);
537
538 /* Check battery voltage */
b64b0b76 539 for (i = 0; i < 5; i++) {
78731d33
DES		 540 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
541 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
542 }
543
544 if (sharpsl_pm.machinfo->discharge1)
545 sharpsl_pm.machinfo->discharge1(0);
546
547 sharpsl_pm.machinfo->discharge(0);
548
549 val = get_select_val(buff);
550 dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
551
552 if (val < sharpsl_pm.machinfo->charge_on_volt)
553 return -1;
554
555 return 0;
556}
557#endif
558
559static int sharpsl_ac_check(void)
560{
561 int temp, i, buff[5];
562
b64b0b76 563 for (i = 0; i < 5; i++) {
78731d33
DES		 564 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
565 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
566 }
567
568 temp = get_select_val(buff);
b64b0b76 569 dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n", temp);
78731d33
DES		 570
571 if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
b64b0b76 572 dev_err(sharpsl_pm.dev, "Error: AC check failed: voltage %d.\n", temp);
78731d33
DES		 573 return -1;
574 }
575
576 return 0;
577}
578
579#ifdef CONFIG_PM
580static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
581{
582 sharpsl_pm.flags |= SHARPSL_SUSPENDED;
fe413ec3
TH		 583 flush_delayed_work_sync(&toggle_charger);
584 flush_delayed_work_sync(&sharpsl_bat);
78731d33
DES		 585
586 if (sharpsl_pm.charge_mode == CHRG_ON)
587 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
588 else
589 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
590
591 return 0;
592}
593
594static int sharpsl_pm_resume(struct platform_device *pdev)
595{
596 /* Clear the reset source indicators as they break the bootloader upon reboot */
597 RCSR = 0x0f;
598 sharpsl_average_clear();
599 sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
600 sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
601
602 return 0;
603}
604
605static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
606{
b64b0b76 607 dev_dbg(sharpsl_pm.dev, "Time is: %08x\n", RCNR);
78731d33 608
b64b0b76 609 dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n", sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
78731d33
DES		 610 /* not charging and AC-IN! */
611
612 if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
613 dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
614 sharpsl_pm.charge_mode = CHRG_OFF;
615 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
616 sharpsl_off_charge_battery();
617 }
618
619 sharpsl_pm.machinfo->presuspend();
620
621 PEDR = 0xffffffff; /* clear it */
622
623 sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
624 if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
625 RTSR &= RTSR_ALE;
626 RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
b64b0b76 627 dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n", RTAR);
78731d33
DES		 628 sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
629 } else if (alarm_enable) {
630 RTSR &= RTSR_ALE;
631 RTAR = alarm_time;
b64b0b76 632 dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n", RTAR);
78731d33
DES		 633 } else {
634 dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
635 }
636
637 pxa_pm_enter(state);
638
639 sharpsl_pm.machinfo->postsuspend();
640
b64b0b76 641 dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n", PEDR);
78731d33
DES		 642}
643
644static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
645{
b64b0b76 646 if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable)) {
78731d33
DES		 647 if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
648 dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
649 corgi_goto_sleep(alarm_time, alarm_enable, state);
650 return 1;
651 }
b64b0b76 652 if (sharpsl_off_charge_battery()) {
78731d33
DES		 653 dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
654 corgi_goto_sleep(alarm_time, alarm_enable, state);
655 return 1;
656 }
657 dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
658 }
659
99f329a2
PM		 660 if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) ||
661 (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL))) {
78731d33
DES		 662 dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n");
663 corgi_goto_sleep(alarm_time, alarm_enable, state);
664 return 1;
665 }
666
667 return 0;
668}
669
670static int corgi_pxa_pm_enter(suspend_state_t state)
671{
672 unsigned long alarm_time = RTAR;
673 unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0);
674
675 dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n");
676
677 corgi_goto_sleep(alarm_time, alarm_status, state);
678
b64b0b76 679 while (corgi_enter_suspend(alarm_time, alarm_status, state))
78731d33
DES		 680 {}
681
682 if (sharpsl_pm.machinfo->earlyresume)
683 sharpsl_pm.machinfo->earlyresume();
684
685 dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n");
686
687 return 0;
688}
689
690/*
691 * Check for fatal battery errors
692 * Fatal returns -1
693 */
694static int sharpsl_fatal_check(void)
695{
696 int buff[5], temp, i, acin;
697
698 dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n");
699
700 /* Check AC-Adapter */
701 acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
702
703 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
704 sharpsl_pm.machinfo->charge(0);
705 udelay(100);
706 sharpsl_pm.machinfo->discharge(1); /* enable discharge */
707 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
708 }
709
710 if (sharpsl_pm.machinfo->discharge1)
711 sharpsl_pm.machinfo->discharge1(1);
712
713 /* Check battery : check inserting battery ? */
b64b0b76 714 for (i = 0; i < 5; i++) {
78731d33
DES		 715 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
716 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
717 }
718
719 if (sharpsl_pm.machinfo->discharge1)
720 sharpsl_pm.machinfo->discharge1(0);
721
722 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
723 udelay(100);
724 sharpsl_pm.machinfo->charge(1);
725 sharpsl_pm.machinfo->discharge(0);
726 }
727
728 temp = get_select_val(buff);
729 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));
730
731 if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) ||
732 (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt)))
733 return -1;
734 return 0;
735}
736
737static int sharpsl_off_charge_error(void)
738{
739 dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n");
740 sharpsl_pm.machinfo->charge(0);
741 sharpsl_pm_led(SHARPSL_LED_ERROR);
742 sharpsl_pm.charge_mode = CHRG_ERROR;
743 return 1;
744}
745
746/*
747 * Charging Control while suspended
748 * Return 1 - go straight to sleep
749 * Return 0 - sleep or wakeup depending on other factors
750 */
751static int sharpsl_off_charge_battery(void)
752{
753 int time;
754
755 dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode);
756
757 if (sharpsl_pm.charge_mode == CHRG_OFF) {
758 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n");
759
760 /* AC Check */
761 if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0))
762 return sharpsl_off_charge_error();
763
764 /* Start Charging */
765 sharpsl_pm_led(SHARPSL_LED_ON);
766 sharpsl_pm.machinfo->charge(0);
767 mdelay(SHARPSL_CHARGE_WAIT_TIME);
768 sharpsl_pm.machinfo->charge(1);
769
770 sharpsl_pm.charge_mode = CHRG_ON;
771 sharpsl_pm.full_count = 0;
772
773 return 1;
774 } else if (sharpsl_pm.charge_mode != CHRG_ON) {
775 return 1;
776 }
777
778 if (sharpsl_pm.full_count == 0) {
779 int time;
780
781 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n");
782
783 if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0))
784 return sharpsl_off_charge_error();
785
786 sharpsl_pm.machinfo->charge(0);
787 mdelay(SHARPSL_CHARGE_WAIT_TIME);
788 sharpsl_pm.machinfo->charge(1);
789 sharpsl_pm.charge_mode = CHRG_ON;
790
791 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
792
793 time = RCNR;
b64b0b76 794 while (1) {
78731d33
DES		 795 /* Check if any wakeup event had occurred */
796 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
797 return 0;
798 /* Check for timeout */
799 if ((RCNR - time) > SHARPSL_WAIT_CO_TIME)
800 return 1;
801 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
802 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n");
803 sharpsl_pm.full_count++;
804 sharpsl_pm.machinfo->charge(0);
805 mdelay(SHARPSL_CHARGE_WAIT_TIME);
806 sharpsl_pm.machinfo->charge(1);
807 return 1;
808 }
809 }
810 }
811
812 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n");
813
814 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
815
816 time = RCNR;
b64b0b76 817 while (1) {
78731d33 818 /* Check if any wakeup event had occurred */
b64b0b76 819 if (sharpsl_pm.machinfo->charger_wakeup())
78731d33
DES		 820 return 0;
821 /* Check for timeout */
822 if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
823 if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
824 dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
825 sharpsl_pm.full_count = 0;
826 }
827 sharpsl_pm.full_count++;
828 return 1;
829 }
830 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
831 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
832 sharpsl_pm_led(SHARPSL_LED_OFF);
833 sharpsl_pm.machinfo->charge(0);
834 sharpsl_pm.charge_mode = CHRG_DONE;
835 return 1;
836 }
837 }
838}
839#else
840#define sharpsl_pm_suspend NULL
841#define sharpsl_pm_resume NULL
842#endif
843
844static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
845{
b64b0b76 846 return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_percent);
78731d33
DES		 847}
848
849static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
850{
b64b0b76 851 return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage);
78731d33
DES		 852}
853
854static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
855static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
856
857extern void (*apm_get_power_status)(struct apm_power_info *);
858
859static void sharpsl_apm_get_power_status(struct apm_power_info *info)
860{
861 info->ac_line_status = sharpsl_pm.battstat.ac_status;
862
863 if (sharpsl_pm.charge_mode == CHRG_ON)
864 info->battery_status = APM_BATTERY_STATUS_CHARGING;
865 else
866 info->battery_status = sharpsl_pm.battstat.mainbat_status;
867
868 info->battery_flag = (1 << info->battery_status);
869 info->battery_life = sharpsl_pm.battstat.mainbat_percent;
870}
871
872#ifdef CONFIG_PM
2f55ac07 873static const struct platform_suspend_ops sharpsl_pm_ops = {
51cdd928
PM		 874 .prepare = pxa_pm_prepare,
875 .finish = pxa_pm_finish,
78731d33
DES		 876 .enter = corgi_pxa_pm_enter,
877 .valid = suspend_valid_only_mem,
878};
879#endif
880
91a99dfc 881static int __devinit sharpsl_pm_probe(struct platform_device *pdev)
78731d33
DES		 882{
883 int ret;
884
885 if (!pdev->dev.platform_data)
886 return -EINVAL;
887
888 sharpsl_pm.dev = &pdev->dev;
889 sharpsl_pm.machinfo = pdev->dev.platform_data;
890 sharpsl_pm.charge_mode = CHRG_OFF;
891 sharpsl_pm.flags = 0;
892
893 init_timer(&sharpsl_pm.ac_timer);
894 sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
895
896 init_timer(&sharpsl_pm.chrg_full_timer);
897 sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
898
899 led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
900
901 sharpsl_pm.machinfo->init();
902
d5af2778
DES		 903 gpio_request(sharpsl_pm.machinfo->gpio_acin, "AC IN");
904 gpio_direction_input(sharpsl_pm.machinfo->gpio_acin);
905 gpio_request(sharpsl_pm.machinfo->gpio_batfull, "Battery Full");
906 gpio_direction_input(sharpsl_pm.machinfo->gpio_batfull);
907 gpio_request(sharpsl_pm.machinfo->gpio_batlock, "Battery Lock");
908 gpio_direction_input(sharpsl_pm.machinfo->gpio_batlock);
d48898a3
DES		 909
910 /* Register interrupt handlers */
6384fdad
HZ		 911 if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "AC Input Detect", sharpsl_ac_isr)) {
912 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_acin));
d48898a3 913 }
d48898a3 914
6384fdad
HZ		 915 if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Battery Cover", sharpsl_fatal_isr)) {
916 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batlock));
d48898a3 917 }
d48898a3
DES		 918
919 if (sharpsl_pm.machinfo->gpio_fatal) {
6384fdad
HZ		 920 if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Fatal Battery", sharpsl_fatal_isr)) {
921 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_fatal));
d48898a3 922 }
d48898a3
DES		 923 }
924
b64b0b76 925 if (sharpsl_pm.machinfo->batfull_irq) {
d48898a3 926 /* Register interrupt handler. */
6384fdad
HZ		 927 if (request_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING, "CO", sharpsl_chrg_full_isr)) {
928 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batfull));
d48898a3 929 }
d48898a3
DES		 930 }
931
78731d33
DES		 932 ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage);
933 ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
934 if (ret != 0)
935 dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret);
936
937 apm_get_power_status = sharpsl_apm_get_power_status;
938
939#ifdef CONFIG_PM
940 suspend_set_ops(&sharpsl_pm_ops);
941#endif
942
943 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
944
945 return 0;
946}
947
948static int sharpsl_pm_remove(struct platform_device *pdev)
949{
950 suspend_set_ops(NULL);
951
952 device_remove_file(&pdev->dev, &dev_attr_battery_percentage);
953 device_remove_file(&pdev->dev, &dev_attr_battery_voltage);
954
955 led_trigger_unregister_simple(sharpsl_charge_led_trigger);
956
6384fdad
HZ		 957 free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr);
958 free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr);
d48898a3
DES		 959
960 if (sharpsl_pm.machinfo->gpio_fatal)
6384fdad 961 free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr);
d48898a3
DES		 962
963 if (sharpsl_pm.machinfo->batfull_irq)
6384fdad 964 free_irq(PXA_GPIO_TO_IRQ(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr);
d48898a3 965
d5af2778
DES		 966 gpio_free(sharpsl_pm.machinfo->gpio_batlock);
967 gpio_free(sharpsl_pm.machinfo->gpio_batfull);
968 gpio_free(sharpsl_pm.machinfo->gpio_acin);
969
d48898a3
DES		 970 if (sharpsl_pm.machinfo->exit)
971 sharpsl_pm.machinfo->exit();
78731d33
DES		 972
973 del_timer_sync(&sharpsl_pm.chrg_full_timer);
974 del_timer_sync(&sharpsl_pm.ac_timer);
975
976 return 0;
977}
978
979static struct platform_driver sharpsl_pm_driver = {
980 .probe = sharpsl_pm_probe,
981 .remove = sharpsl_pm_remove,
982 .suspend = sharpsl_pm_suspend,
983 .resume = sharpsl_pm_resume,
984 .driver = {
985 .name = "sharpsl-pm",
986 },
987};
988
989static int __devinit sharpsl_pm_init(void)
990{
991 return platform_driver_register(&sharpsl_pm_driver);
992}
993
994static void sharpsl_pm_exit(void)
995{
996 platform_driver_unregister(&sharpsl_pm_driver);
997}
998
999late_initcall(sharpsl_pm_init);
1000module_exit(sharpsl_pm_exit);
Linux kernel - Deliverables
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