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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[GitHub/mt8127/android_kernel_alcatel_ttab.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);
78731d33
DES		 58#endif
59static int sharpsl_check_battery_temp(void);
60static int sharpsl_ac_check(void);
61static int sharpsl_average_value(int ad);
62static void sharpsl_average_clear(void);
63static void sharpsl_charge_toggle(struct work_struct *private_);
64static void sharpsl_battery_thread(struct work_struct *private_);
65
66
67/*
68 * Variables
69 */
70struct sharpsl_pm_status sharpsl_pm;
d48898a3
DES		 71static DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
72static DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
78731d33
DES		 73DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
74
75
078abcf9 76
0ba01ebc 77struct battery_thresh sharpsl_battery_levels_acin[] = {
078abcf9
RP		 78 { 213, 100},
79 { 212, 98},
80 { 211, 95},
81 { 210, 93},
82 { 209, 90},
83 { 208, 88},
84 { 207, 85},
85 { 206, 83},
86 { 205, 80},
87 { 204, 78},
88 { 203, 75},
89 { 202, 73},
90 { 201, 70},
91 { 200, 68},
92 { 199, 65},
93 { 198, 63},
94 { 197, 60},
95 { 196, 58},
96 { 195, 55},
97 { 194, 53},
98 { 193, 50},
99 { 192, 48},
100 { 192, 45},
101 { 191, 43},
102 { 191, 40},
103 { 190, 38},
104 { 190, 35},
105 { 189, 33},
106 { 188, 30},
107 { 187, 28},
108 { 186, 25},
109 { 185, 23},
110 { 184, 20},
111 { 183, 18},
112 { 182, 15},
113 { 181, 13},
114 { 180, 10},
115 { 179, 8},
116 { 178, 5},
117 { 0, 0},
118};
119
0ba01ebc 120struct battery_thresh sharpsl_battery_levels_noac[] = {
078abcf9
RP		 121 { 213, 100},
122 { 212, 98},
123 { 211, 95},
124 { 210, 93},
125 { 209, 90},
126 { 208, 88},
127 { 207, 85},
128 { 206, 83},
129 { 205, 80},
130 { 204, 78},
131 { 203, 75},
132 { 202, 73},
133 { 201, 70},
134 { 200, 68},
135 { 199, 65},
136 { 198, 63},
137 { 197, 60},
138 { 196, 58},
139 { 195, 55},
140 { 194, 53},
141 { 193, 50},
142 { 192, 48},
143 { 191, 45},
144 { 190, 43},
145 { 189, 40},
146 { 188, 38},
147 { 187, 35},
148 { 186, 33},
149 { 185, 30},
150 { 184, 28},
151 { 183, 25},
152 { 182, 23},
153 { 181, 20},
154 { 180, 18},
155 { 179, 15},
156 { 178, 13},
157 { 177, 10},
158 { 176, 8},
159 { 175, 5},
160 { 0, 0},
161};
162
25af3b0f 163/* MAX1111 Commands */
b64b0b76
PM		 164#define MAXCTRL_PD0 (1u << 0)
165#define MAXCTRL_PD1 (1u << 1)
166#define MAXCTRL_SGL (1u << 2)
167#define MAXCTRL_UNI (1u << 3)
25af3b0f 168#define MAXCTRL_SEL_SH 4
b64b0b76 169#define MAXCTRL_STR (1u << 7)
25af3b0f 170
438d7dc2 171extern int max1111_read_channel(int);
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
f16177c2
EM		 181 /* max1111 accepts channels from 0-3, however,
182 * it is encoded from 0-7 here in the code.
183 */
184 return max1111_read_channel(channel >> 1);
078abcf9
RP		 185}
186
78731d33
DES		 187static int get_percentage(int voltage)
188{
189 int i = sharpsl_pm.machinfo->bat_levels - 1;
190 int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
191 struct battery_thresh *thresh;
192
193 if (sharpsl_pm.charge_mode == CHRG_ON)
194 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
195 else
196 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
197
198 while (i > 0 && (voltage > thresh[i].voltage))
199 i--;
200
201 return thresh[i].percentage;
202}
203
204static int get_apm_status(int voltage)
205{
206 int low_thresh, high_thresh;
207
208 if (sharpsl_pm.charge_mode == CHRG_ON) {
209 high_thresh = sharpsl_pm.machinfo->status_high_acin;
210 low_thresh = sharpsl_pm.machinfo->status_low_acin;
211 } else {
212 high_thresh = sharpsl_pm.machinfo->status_high_noac;
213 low_thresh = sharpsl_pm.machinfo->status_low_noac;
214 }
215
216 if (voltage >= high_thresh)
217 return APM_BATTERY_STATUS_HIGH;
218 if (voltage >= low_thresh)
219 return APM_BATTERY_STATUS_LOW;
220 return APM_BATTERY_STATUS_CRITICAL;
221}
222
223void sharpsl_battery_kick(void)
224{
225 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
226}
227EXPORT_SYMBOL(sharpsl_battery_kick);
228
229
230static void sharpsl_battery_thread(struct work_struct *private_)
231{
b64b0b76 232 int voltage, percent, apm_status, i;
78731d33
DES		 233
234 if (!sharpsl_pm.machinfo)
235 return;
236
237 sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
238
239 /* Corgi cannot confirm when battery fully charged so periodically kick! */
240 if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
241 && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
242 schedule_delayed_work(&toggle_charger, 0);
243
b64b0b76 244 for (i = 0; i < 5; i++) {
78731d33 245 voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
b64b0b76 246 if (voltage > 0)
78731d33 247 break;
b64b0b76
PM		 248 }
249 if (voltage <= 0) {
250 voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
251 dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
78731d33
DES		 252 }
253
254 voltage = sharpsl_average_value(voltage);
255 apm_status = get_apm_status(voltage);
256 percent = get_percentage(voltage);
257
258 /* At low battery voltages, the voltage has a tendency to start
b64b0b76
PM		 259 creeping back up so we try to avoid this here */
260 if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE)
261 || (apm_status == APM_BATTERY_STATUS_HIGH)
262 || percent <= sharpsl_pm.battstat.mainbat_percent) {
78731d33
DES		 263 sharpsl_pm.battstat.mainbat_voltage = voltage;
264 sharpsl_pm.battstat.mainbat_status = apm_status;
265 sharpsl_pm.battstat.mainbat_percent = percent;
266 }
267
268 dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
269 sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
270
78731d33
DES		 271 /* Suspend if critical battery level */
272 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
b64b0b76
PM		 273 && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
274 && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
78731d33
DES		 275 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
276 dev_err(sharpsl_pm.dev, "Fatal Off\n");
277 apm_queue_event(APM_CRITICAL_SUSPEND);
278 }
279
280 schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
281}
282
283void sharpsl_pm_led(int val)
284{
285 if (val == SHARPSL_LED_ERROR) {
286 dev_err(sharpsl_pm.dev, "Charging Error!\n");
287 } else if (val == SHARPSL_LED_ON) {
288 dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
289 led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
290 } else {
291 dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
292 led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
293 }
294}
295
296static void sharpsl_charge_on(void)
297{
298 dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
299
300 sharpsl_pm.full_count = 0;
301 sharpsl_pm.charge_mode = CHRG_ON;
302 schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
303 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
304}
305
306static void sharpsl_charge_off(void)
307{
308 dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
309
310 sharpsl_pm.machinfo->charge(0);
311 sharpsl_pm_led(SHARPSL_LED_OFF);
312 sharpsl_pm.charge_mode = CHRG_OFF;
313
314 schedule_delayed_work(&sharpsl_bat, 0);
315}
316
317static void sharpsl_charge_error(void)
318{
319 sharpsl_pm_led(SHARPSL_LED_ERROR);
320 sharpsl_pm.machinfo->charge(0);
321 sharpsl_pm.charge_mode = CHRG_ERROR;
322}
323
324static void sharpsl_charge_toggle(struct work_struct *private_)
325{
b64b0b76 326 dev_dbg(sharpsl_pm.dev, "Toggling Charger at time: %lx\n", jiffies);
78731d33
DES		 327
328 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
329 sharpsl_charge_off();
330 return;
331 } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
332 sharpsl_charge_error();
333 return;
334 }
335
336 sharpsl_pm_led(SHARPSL_LED_ON);
337 sharpsl_pm.machinfo->charge(0);
338 mdelay(SHARPSL_CHARGE_WAIT_TIME);
339 sharpsl_pm.machinfo->charge(1);
340
341 sharpsl_pm.charge_start_time = jiffies;
342}
343
344static void sharpsl_ac_timer(unsigned long data)
345{
346 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
347
b64b0b76 348 dev_dbg(sharpsl_pm.dev, "AC Status: %d\n", acin);
78731d33
DES		 349
350 sharpsl_average_clear();
351 if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
352 sharpsl_charge_on();
353 else if (sharpsl_pm.charge_mode == CHRG_ON)
354 sharpsl_charge_off();
355
356 schedule_delayed_work(&sharpsl_bat, 0);
357}
358
359
d48898a3 360static irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
78731d33
DES		 361{
362 /* Delay the event slightly to debounce */
363 /* Must be a smaller delay than the chrg_full_isr below */
364 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
365
366 return IRQ_HANDLED;
367}
368
369static void sharpsl_chrg_full_timer(unsigned long data)
370{
371 dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
372
373 sharpsl_pm.full_count++;
374
375 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
376 dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
377 if (sharpsl_pm.charge_mode == CHRG_ON)
378 sharpsl_charge_off();
379 } else if (sharpsl_pm.full_count < 2) {
380 dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
381 schedule_delayed_work(&toggle_charger, 0);
382 } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
383 dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
384 schedule_delayed_work(&toggle_charger, 0);
385 } else {
386 sharpsl_charge_off();
387 sharpsl_pm.charge_mode = CHRG_DONE;
388 dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
389 }
390}
391
392/* Charging Finished Interrupt (Not present on Corgi) */
393/* Can trigger at the same time as an AC status change so
394 delay until after that has been processed */
d48898a3 395static irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
78731d33
DES		 396{
397 if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
398 return IRQ_HANDLED;
399
400 /* delay until after any ac interrupt */
401 mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
402
403 return IRQ_HANDLED;
404}
405
d48898a3 406static irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
78731d33
DES		 407{
408 int is_fatal = 0;
409
410 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
411 dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
412 is_fatal = 1;
413 }
414
415 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
416 dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
417 is_fatal = 1;
418 }
419
420 if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
421 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
422 apm_queue_event(APM_CRITICAL_SUSPEND);
423 }
424
425 return IRQ_HANDLED;
426}
427
428/*
429 * Maintain an average of the last 10 readings
430 */
431#define SHARPSL_CNV_VALUE_NUM 10
432static int sharpsl_ad_index;
433
434static void sharpsl_average_clear(void)
435{
436 sharpsl_ad_index = 0;
437}
438
439static int sharpsl_average_value(int ad)
440{
441 int i, ad_val = 0;
442 static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
443
444 if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
445 sharpsl_ad_index = 0;
446 return ad;
447 }
448
449 sharpsl_ad[sharpsl_ad_index] = ad;
450 sharpsl_ad_index++;
451 if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
b64b0b76 452 for (i = 0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
78731d33
DES		 453 sharpsl_ad[i] = sharpsl_ad[i+1];
454 sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
455 }
b64b0b76 456 for (i = 0; i < sharpsl_ad_index; i++)
78731d33
DES		 457 ad_val += sharpsl_ad[i];
458
b64b0b76 459 return ad_val / sharpsl_ad_index;
78731d33
DES		 460}
461
462/*
463 * Take an array of 5 integers, remove the maximum and minimum values
464 * and return the average.
465 */
466static int get_select_val(int *val)
467{
468 int i, j, k, temp, sum = 0;
469
470 /* Find MAX val */
471 temp = val[0];
b64b0b76
PM		 472 j = 0;
473 for (i = 1; i < 5; i++) {
78731d33
DES		 474 if (temp < val[i]) {
475 temp = val[i];
476 j = i;
477 }
478 }
479
480 /* Find MIN val */
481 temp = val[4];
b64b0b76
PM		 482 k = 4;
483 for (i = 3; i >= 0; i--) {
78731d33
DES		 484 if (temp > val[i]) {
485 temp = val[i];
486 k = i;
487 }
488 }
489
b64b0b76
PM		 490 for (i = 0; i < 5; i++)
491 if (i != j && i != k)
78731d33
DES		 492 sum += val[i];
493
494 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]);
495
b64b0b76 496 return sum/3;
78731d33
DES		 497}
498
499static int sharpsl_check_battery_temp(void)
500{
501 int val, i, buff[5];
502
503 /* Check battery temperature */
b64b0b76 504 for (i = 0; i < 5; i++) {
78731d33
DES		 505 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
506 sharpsl_pm.machinfo->measure_temp(1);
507 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
508 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
509 sharpsl_pm.machinfo->measure_temp(0);
510 }
511
512 val = get_select_val(buff);
513
514 dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
515 if (val > sharpsl_pm.machinfo->charge_on_temp) {
516 printk(KERN_WARNING "Not charging: temperature out of limits.\n");
517 return -1;
518 }
519
520 return 0;
521}
522
523#ifdef CONFIG_PM
524static int sharpsl_check_battery_voltage(void)
525{
526 int val, i, buff[5];
527
528 /* disable charge, enable discharge */
529 sharpsl_pm.machinfo->charge(0);
530 sharpsl_pm.machinfo->discharge(1);
531 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
532
533 if (sharpsl_pm.machinfo->discharge1)
534 sharpsl_pm.machinfo->discharge1(1);
535
536 /* Check battery voltage */
b64b0b76 537 for (i = 0; i < 5; i++) {
78731d33
DES		 538 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
539 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
540 }
541
542 if (sharpsl_pm.machinfo->discharge1)
543 sharpsl_pm.machinfo->discharge1(0);
544
545 sharpsl_pm.machinfo->discharge(0);
546
547 val = get_select_val(buff);
548 dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
549
550 if (val < sharpsl_pm.machinfo->charge_on_volt)
551 return -1;
552
553 return 0;
554}
555#endif
556
557static int sharpsl_ac_check(void)
558{
559 int temp, i, buff[5];
560
b64b0b76 561 for (i = 0; i < 5; i++) {
78731d33
DES		 562 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
563 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
564 }
565
566 temp = get_select_val(buff);
b64b0b76 567 dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n", temp);
78731d33
DES		 568
569 if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
b64b0b76 570 dev_err(sharpsl_pm.dev, "Error: AC check failed: voltage %d.\n", temp);
78731d33
DES		 571 return -1;
572 }
573
574 return 0;
575}
576
577#ifdef CONFIG_PM
578static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
579{
580 sharpsl_pm.flags |= SHARPSL_SUSPENDED;
43829731
TH		 581 flush_delayed_work(&toggle_charger);
582 flush_delayed_work(&sharpsl_bat);
78731d33
DES		 583
584 if (sharpsl_pm.charge_mode == CHRG_ON)
585 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
586 else
587 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
588
589 return 0;
590}
591
592static int sharpsl_pm_resume(struct platform_device *pdev)
593{
594 /* Clear the reset source indicators as they break the bootloader upon reboot */
595 RCSR = 0x0f;
596 sharpsl_average_clear();
597 sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
598 sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
599
600 return 0;
601}
602
603static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
604{
b64b0b76 605 dev_dbg(sharpsl_pm.dev, "Time is: %08x\n", RCNR);
78731d33 606
b64b0b76 607 dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n", sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
78731d33
DES		 608 /* not charging and AC-IN! */
609
610 if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
611 dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
612 sharpsl_pm.charge_mode = CHRG_OFF;
613 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
614 sharpsl_off_charge_battery();
615 }
616
617 sharpsl_pm.machinfo->presuspend();
618
619 PEDR = 0xffffffff; /* clear it */
620
621 sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
622 if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
623 RTSR &= RTSR_ALE;
624 RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
b64b0b76 625 dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n", RTAR);
78731d33
DES		 626 sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
627 } else if (alarm_enable) {
628 RTSR &= RTSR_ALE;
629 RTAR = alarm_time;
b64b0b76 630 dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n", RTAR);
78731d33
DES		 631 } else {
632 dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
633 }
634
635 pxa_pm_enter(state);
636
637 sharpsl_pm.machinfo->postsuspend();
638
b64b0b76 639 dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n", PEDR);
78731d33
DES		 640}
641
642static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
643{
b64b0b76 644 if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable)) {
78731d33
DES		 645 if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
646 dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
647 corgi_goto_sleep(alarm_time, alarm_enable, state);
648 return 1;
649 }
b64b0b76 650 if (sharpsl_off_charge_battery()) {
78731d33
DES		 651 dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
652 corgi_goto_sleep(alarm_time, alarm_enable, state);
653 return 1;
654 }
655 dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
656 }
657
99f329a2
PM		 658 if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) ||
659 (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL))) {
78731d33
DES		 660 dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n");
661 corgi_goto_sleep(alarm_time, alarm_enable, state);
662 return 1;
663 }
664
665 return 0;
666}
667
668static int corgi_pxa_pm_enter(suspend_state_t state)
669{
670 unsigned long alarm_time = RTAR;
671 unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0);
672
673 dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n");
674
675 corgi_goto_sleep(alarm_time, alarm_status, state);
676
b64b0b76 677 while (corgi_enter_suspend(alarm_time, alarm_status, state))
78731d33
DES		 678 {}
679
680 if (sharpsl_pm.machinfo->earlyresume)
681 sharpsl_pm.machinfo->earlyresume();
682
683 dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n");
684
685 return 0;
686}
687
78731d33
DES		 688static int sharpsl_off_charge_error(void)
689{
690 dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n");
691 sharpsl_pm.machinfo->charge(0);
692 sharpsl_pm_led(SHARPSL_LED_ERROR);
693 sharpsl_pm.charge_mode = CHRG_ERROR;
694 return 1;
695}
696
697/*
698 * Charging Control while suspended
699 * Return 1 - go straight to sleep
700 * Return 0 - sleep or wakeup depending on other factors
701 */
702static int sharpsl_off_charge_battery(void)
703{
704 int time;
705
706 dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode);
707
708 if (sharpsl_pm.charge_mode == CHRG_OFF) {
709 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n");
710
711 /* AC Check */
712 if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0))
713 return sharpsl_off_charge_error();
714
715 /* Start Charging */
716 sharpsl_pm_led(SHARPSL_LED_ON);
717 sharpsl_pm.machinfo->charge(0);
718 mdelay(SHARPSL_CHARGE_WAIT_TIME);
719 sharpsl_pm.machinfo->charge(1);
720
721 sharpsl_pm.charge_mode = CHRG_ON;
722 sharpsl_pm.full_count = 0;
723
724 return 1;
725 } else if (sharpsl_pm.charge_mode != CHRG_ON) {
726 return 1;
727 }
728
729 if (sharpsl_pm.full_count == 0) {
730 int time;
731
732 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n");
733
734 if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0))
735 return sharpsl_off_charge_error();
736
737 sharpsl_pm.machinfo->charge(0);
738 mdelay(SHARPSL_CHARGE_WAIT_TIME);
739 sharpsl_pm.machinfo->charge(1);
740 sharpsl_pm.charge_mode = CHRG_ON;
741
742 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
743
744 time = RCNR;
b64b0b76 745 while (1) {
78731d33
DES		 746 /* Check if any wakeup event had occurred */
747 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
748 return 0;
749 /* Check for timeout */
750 if ((RCNR - time) > SHARPSL_WAIT_CO_TIME)
751 return 1;
752 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
753 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n");
754 sharpsl_pm.full_count++;
755 sharpsl_pm.machinfo->charge(0);
756 mdelay(SHARPSL_CHARGE_WAIT_TIME);
757 sharpsl_pm.machinfo->charge(1);
758 return 1;
759 }
760 }
761 }
762
763 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n");
764
765 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
766
767 time = RCNR;
b64b0b76 768 while (1) {
78731d33 769 /* Check if any wakeup event had occurred */
b64b0b76 770 if (sharpsl_pm.machinfo->charger_wakeup())
78731d33
DES		 771 return 0;
772 /* Check for timeout */
773 if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
774 if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
775 dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
776 sharpsl_pm.full_count = 0;
777 }
778 sharpsl_pm.full_count++;
779 return 1;
780 }
781 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
782 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
783 sharpsl_pm_led(SHARPSL_LED_OFF);
784 sharpsl_pm.machinfo->charge(0);
785 sharpsl_pm.charge_mode = CHRG_DONE;
786 return 1;
787 }
788 }
789}
790#else
791#define sharpsl_pm_suspend NULL
792#define sharpsl_pm_resume NULL
793#endif
794
795static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
796{
b64b0b76 797 return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_percent);
78731d33
DES		 798}
799
800static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
801{
b64b0b76 802 return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage);
78731d33
DES		 803}
804
805static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
806static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
807
808extern void (*apm_get_power_status)(struct apm_power_info *);
809
810static void sharpsl_apm_get_power_status(struct apm_power_info *info)
811{
812 info->ac_line_status = sharpsl_pm.battstat.ac_status;
813
814 if (sharpsl_pm.charge_mode == CHRG_ON)
815 info->battery_status = APM_BATTERY_STATUS_CHARGING;
816 else
817 info->battery_status = sharpsl_pm.battstat.mainbat_status;
818
819 info->battery_flag = (1 << info->battery_status);
820 info->battery_life = sharpsl_pm.battstat.mainbat_percent;
821}
822
823#ifdef CONFIG_PM
2f55ac07 824static const struct platform_suspend_ops sharpsl_pm_ops = {
51cdd928
PM		 825 .prepare = pxa_pm_prepare,
826 .finish = pxa_pm_finish,
78731d33
DES		 827 .enter = corgi_pxa_pm_enter,
828 .valid = suspend_valid_only_mem,
829};
830#endif
831
91a99dfc 832static int __devinit sharpsl_pm_probe(struct platform_device *pdev)
78731d33 833{
74595e17 834 int ret, irq;
78731d33
DES		 835
836 if (!pdev->dev.platform_data)
837 return -EINVAL;
838
839 sharpsl_pm.dev = &pdev->dev;
840 sharpsl_pm.machinfo = pdev->dev.platform_data;
841 sharpsl_pm.charge_mode = CHRG_OFF;
842 sharpsl_pm.flags = 0;
843
844 init_timer(&sharpsl_pm.ac_timer);
845 sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
846
847 init_timer(&sharpsl_pm.chrg_full_timer);
848 sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
849
850 led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
851
852 sharpsl_pm.machinfo->init();
853
d5af2778
DES		 854 gpio_request(sharpsl_pm.machinfo->gpio_acin, "AC IN");
855 gpio_direction_input(sharpsl_pm.machinfo->gpio_acin);
856 gpio_request(sharpsl_pm.machinfo->gpio_batfull, "Battery Full");
857 gpio_direction_input(sharpsl_pm.machinfo->gpio_batfull);
858 gpio_request(sharpsl_pm.machinfo->gpio_batlock, "Battery Lock");
859 gpio_direction_input(sharpsl_pm.machinfo->gpio_batlock);
d48898a3
DES		 860
861 /* Register interrupt handlers */
74595e17
RH		 862 irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_acin);
863 if (request_irq(irq, sharpsl_ac_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "AC Input Detect", sharpsl_ac_isr)) {
864 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq);
d48898a3 865 }
d48898a3 866
74595e17
RH		 867 irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_batlock);
868 if (request_irq(irq, sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Battery Cover", sharpsl_fatal_isr)) {
869 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq);
d48898a3 870 }
d48898a3
DES		 871
872 if (sharpsl_pm.machinfo->gpio_fatal) {
74595e17
RH		 873 irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_fatal);
874 if (request_irq(irq, sharpsl_fatal_isr, IRQF_DISABLED | IRQF_TRIGGER_FALLING, "Fatal Battery", sharpsl_fatal_isr)) {
875 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq);
d48898a3 876 }
d48898a3
DES		 877 }
878
b64b0b76 879 if (sharpsl_pm.machinfo->batfull_irq) {
d48898a3 880 /* Register interrupt handler. */
74595e17
RH		 881 irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_batfull);
882 if (request_irq(irq, sharpsl_chrg_full_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING, "CO", sharpsl_chrg_full_isr)) {
883 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq);
d48898a3 884 }
d48898a3
DES		 885 }
886
78731d33
DES		 887 ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage);
888 ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
889 if (ret != 0)
890 dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret);
891
892 apm_get_power_status = sharpsl_apm_get_power_status;
893
894#ifdef CONFIG_PM
895 suspend_set_ops(&sharpsl_pm_ops);
896#endif
897
898 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
899
900 return 0;
901}
902
903static int sharpsl_pm_remove(struct platform_device *pdev)
904{
905 suspend_set_ops(NULL);
906
907 device_remove_file(&pdev->dev, &dev_attr_battery_percentage);
908 device_remove_file(&pdev->dev, &dev_attr_battery_voltage);
909
910 led_trigger_unregister_simple(sharpsl_charge_led_trigger);
911
74595e17
RH		 912 free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr);
913 free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr);
d48898a3
DES		 914
915 if (sharpsl_pm.machinfo->gpio_fatal)
74595e17 916 free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr);
d48898a3
DES		 917
918 if (sharpsl_pm.machinfo->batfull_irq)
74595e17 919 free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr);
d48898a3 920
d5af2778
DES		 921 gpio_free(sharpsl_pm.machinfo->gpio_batlock);
922 gpio_free(sharpsl_pm.machinfo->gpio_batfull);
923 gpio_free(sharpsl_pm.machinfo->gpio_acin);
924
d48898a3
DES		 925 if (sharpsl_pm.machinfo->exit)
926 sharpsl_pm.machinfo->exit();
78731d33
DES		 927
928 del_timer_sync(&sharpsl_pm.chrg_full_timer);
929 del_timer_sync(&sharpsl_pm.ac_timer);
930
931 return 0;
932}
933
934static struct platform_driver sharpsl_pm_driver = {
935 .probe = sharpsl_pm_probe,
936 .remove = sharpsl_pm_remove,
937 .suspend = sharpsl_pm_suspend,
938 .resume = sharpsl_pm_resume,
939 .driver = {
940 .name = "sharpsl-pm",
941 },
942};
943
944static int __devinit sharpsl_pm_init(void)
945{
946 return platform_driver_register(&sharpsl_pm_driver);
947}
948
949static void sharpsl_pm_exit(void)
950{
951 platform_driver_unregister(&sharpsl_pm_driver);
952}
953
954late_initcall(sharpsl_pm_init);
955module_exit(sharpsl_pm_exit);
kernel source for telekom puls (alcatel/mediatek)