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authorDmitry Eremin-Solenikov <dbaryshkov@gmail.com>2009-03-28 11:18:51 -0400
committerEric Miao <eric.y.miao@gmail.com>2009-06-11 10:20:22 -0400
commit78731d33c1868f4ba43bafcca8dcaf938872c1f2 (patch)
treea5d9f2ba40173182de56cae3628a5cb3eccfb6fa /arch/arm
parent391c5111c9ce346edc3c3d8f907eb178a6decd16 (diff)
[ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific
collie_pm was the only non-PXA user of sharpsl_pm. Now as it's gone we can merge code into one single file to allow further cleanup. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Eric Miao <eric.miao@marvell.com>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/common/Kconfig4
-rw-r--r--arch/arm/common/Makefile1
-rw-r--r--arch/arm/common/sharpsl_pm.c859
-rw-r--r--arch/arm/mach-pxa/Kconfig4
-rw-r--r--arch/arm/mach-pxa/include/mach/sharpsl_pm.h (renamed from arch/arm/include/asm/hardware/sharpsl_pm.h)0
-rw-r--r--arch/arm/mach-pxa/sharpsl.h2
-rw-r--r--arch/arm/mach-pxa/sharpsl_pm.c834
7 files changed, 838 insertions, 866 deletions
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index a2cd9beaf37d..dea7ce337f89 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -27,10 +27,6 @@ config SHARP_LOCOMO
27config SHARP_PARAM 27config SHARP_PARAM
28 bool 28 bool
29 29
30config SHARPSL_PM
31 bool
32 select APM_EMULATION
33
34config SHARP_SCOOP 30config SHARP_SCOOP
35 bool 31 bool
36 32
diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile
index 7cb7961d81cb..76be7ff2a7ca 100644
--- a/arch/arm/common/Makefile
+++ b/arch/arm/common/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_DMABOUNCE) += dmabounce.o
12obj-$(CONFIG_TIMER_ACORN) += time-acorn.o 12obj-$(CONFIG_TIMER_ACORN) += time-acorn.o
13obj-$(CONFIG_SHARP_LOCOMO) += locomo.o 13obj-$(CONFIG_SHARP_LOCOMO) += locomo.o
14obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o 14obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o
15obj-$(CONFIG_SHARPSL_PM) += sharpsl_pm.o
16obj-$(CONFIG_SHARP_SCOOP) += scoop.o 15obj-$(CONFIG_SHARP_SCOOP) += scoop.o
17obj-$(CONFIG_ARCH_IXP2000) += uengine.o 16obj-$(CONFIG_ARCH_IXP2000) += uengine.o
18obj-$(CONFIG_ARCH_IXP23XX) += uengine.o 17obj-$(CONFIG_ARCH_IXP23XX) += uengine.o
diff --git a/arch/arm/common/sharpsl_pm.c b/arch/arm/common/sharpsl_pm.c
deleted file mode 100644
index 140f1d721d50..000000000000
--- a/arch/arm/common/sharpsl_pm.c
+++ /dev/null
@@ -1,859 +0,0 @@
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>
18#include <linux/timer.h>
19#include <linux/init.h>
20#include <linux/kernel.h>
21#include <linux/apm_bios.h>
22#include <linux/delay.h>
23#include <linux/interrupt.h>
24#include <linux/platform_device.h>
25#include <linux/leds.h>
26#include <linux/apm-emulation.h>
27#include <linux/suspend.h>
28
29#include <mach/hardware.h>
30#include <asm/irq.h>
31#include <mach/pm.h>
32#include <mach/pxa2xx-regs.h>
33#include <mach/regs-rtc.h>
34#include <mach/sharpsl.h>
35#include <asm/hardware/sharpsl_pm.h>
36
37/*
38 * Constants
39 */
40#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */
41#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */
42#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */
43#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */
44
45#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */
46#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */
47#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */
48#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */
49#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */
50#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */
51#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */
52#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */
53
54/*
55 * Prototypes
56 */
57#ifdef CONFIG_PM
58static int sharpsl_off_charge_battery(void);
59static int sharpsl_check_battery_voltage(void);
60static int sharpsl_fatal_check(void);
61#endif
62static int sharpsl_check_battery_temp(void);
63static int sharpsl_ac_check(void);
64static int sharpsl_average_value(int ad);
65static void sharpsl_average_clear(void);
66static void sharpsl_charge_toggle(struct work_struct *private_);
67static void sharpsl_battery_thread(struct work_struct *private_);
68
69
70/*
71 * Variables
72 */
73struct sharpsl_pm_status sharpsl_pm;
74DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
75DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
76DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
77
78
79static int get_percentage(int voltage)
80{
81 int i = sharpsl_pm.machinfo->bat_levels - 1;
82 int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
83 struct battery_thresh *thresh;
84
85 if (sharpsl_pm.charge_mode == CHRG_ON)
86 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
87 else
88 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
89
90 while (i > 0 && (voltage > thresh[i].voltage))
91 i--;
92
93 return thresh[i].percentage;
94}
95
96static int get_apm_status(int voltage)
97{
98 int low_thresh, high_thresh;
99
100 if (sharpsl_pm.charge_mode == CHRG_ON) {
101 high_thresh = sharpsl_pm.machinfo->status_high_acin;
102 low_thresh = sharpsl_pm.machinfo->status_low_acin;
103 } else {
104 high_thresh = sharpsl_pm.machinfo->status_high_noac;
105 low_thresh = sharpsl_pm.machinfo->status_low_noac;
106 }
107
108 if (voltage >= high_thresh)
109 return APM_BATTERY_STATUS_HIGH;
110 if (voltage >= low_thresh)
111 return APM_BATTERY_STATUS_LOW;
112 return APM_BATTERY_STATUS_CRITICAL;
113}
114
115void sharpsl_battery_kick(void)
116{
117 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
118}
119EXPORT_SYMBOL(sharpsl_battery_kick);
120
121
122static void sharpsl_battery_thread(struct work_struct *private_)
123{
124 int voltage, percent, apm_status, i = 0;
125
126 if (!sharpsl_pm.machinfo)
127 return;
128
129 sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
130
131 /* Corgi cannot confirm when battery fully charged so periodically kick! */
132 if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
133 && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
134 schedule_delayed_work(&toggle_charger, 0);
135
136 while(1) {
137 voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
138
139 if (voltage > 0) break;
140 if (i++ > 5) {
141 voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
142 dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
143 break;
144 }
145 }
146
147 voltage = sharpsl_average_value(voltage);
148 apm_status = get_apm_status(voltage);
149 percent = get_percentage(voltage);
150
151 /* At low battery voltages, the voltage has a tendency to start
152 creeping back up so we try to avoid this here */
153 if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) {
154 sharpsl_pm.battstat.mainbat_voltage = voltage;
155 sharpsl_pm.battstat.mainbat_status = apm_status;
156 sharpsl_pm.battstat.mainbat_percent = percent;
157 }
158
159 dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
160 sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
161
162#ifdef CONFIG_BACKLIGHT_CORGI
163 /* If battery is low. limit backlight intensity to save power. */
164 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
165 && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) ||
166 (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
167 if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) {
168 sharpsl_pm.machinfo->backlight_limit(1);
169 sharpsl_pm.flags |= SHARPSL_BL_LIMIT;
170 }
171 } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) {
172 sharpsl_pm.machinfo->backlight_limit(0);
173 sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT;
174 }
175#endif
176
177 /* Suspend if critical battery level */
178 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
179 && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
180 && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
181 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
182 dev_err(sharpsl_pm.dev, "Fatal Off\n");
183 apm_queue_event(APM_CRITICAL_SUSPEND);
184 }
185
186 schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
187}
188
189void sharpsl_pm_led(int val)
190{
191 if (val == SHARPSL_LED_ERROR) {
192 dev_err(sharpsl_pm.dev, "Charging Error!\n");
193 } else if (val == SHARPSL_LED_ON) {
194 dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
195 led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
196 } else {
197 dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
198 led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
199 }
200}
201
202static void sharpsl_charge_on(void)
203{
204 dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
205
206 sharpsl_pm.full_count = 0;
207 sharpsl_pm.charge_mode = CHRG_ON;
208 schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
209 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
210}
211
212static void sharpsl_charge_off(void)
213{
214 dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
215
216 sharpsl_pm.machinfo->charge(0);
217 sharpsl_pm_led(SHARPSL_LED_OFF);
218 sharpsl_pm.charge_mode = CHRG_OFF;
219
220 schedule_delayed_work(&sharpsl_bat, 0);
221}
222
223static void sharpsl_charge_error(void)
224{
225 sharpsl_pm_led(SHARPSL_LED_ERROR);
226 sharpsl_pm.machinfo->charge(0);
227 sharpsl_pm.charge_mode = CHRG_ERROR;
228}
229
230static void sharpsl_charge_toggle(struct work_struct *private_)
231{
232 dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies);
233
234 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
235 sharpsl_charge_off();
236 return;
237 } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
238 sharpsl_charge_error();
239 return;
240 }
241
242 sharpsl_pm_led(SHARPSL_LED_ON);
243 sharpsl_pm.machinfo->charge(0);
244 mdelay(SHARPSL_CHARGE_WAIT_TIME);
245 sharpsl_pm.machinfo->charge(1);
246
247 sharpsl_pm.charge_start_time = jiffies;
248}
249
250static void sharpsl_ac_timer(unsigned long data)
251{
252 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
253
254 dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin);
255
256 sharpsl_average_clear();
257 if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
258 sharpsl_charge_on();
259 else if (sharpsl_pm.charge_mode == CHRG_ON)
260 sharpsl_charge_off();
261
262 schedule_delayed_work(&sharpsl_bat, 0);
263}
264
265
266irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
267{
268 /* Delay the event slightly to debounce */
269 /* Must be a smaller delay than the chrg_full_isr below */
270 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
271
272 return IRQ_HANDLED;
273}
274
275static void sharpsl_chrg_full_timer(unsigned long data)
276{
277 dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
278
279 sharpsl_pm.full_count++;
280
281 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
282 dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
283 if (sharpsl_pm.charge_mode == CHRG_ON)
284 sharpsl_charge_off();
285 } else if (sharpsl_pm.full_count < 2) {
286 dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
287 schedule_delayed_work(&toggle_charger, 0);
288 } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
289 dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
290 schedule_delayed_work(&toggle_charger, 0);
291 } else {
292 sharpsl_charge_off();
293 sharpsl_pm.charge_mode = CHRG_DONE;
294 dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
295 }
296}
297
298/* Charging Finished Interrupt (Not present on Corgi) */
299/* Can trigger at the same time as an AC status change so
300 delay until after that has been processed */
301irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
302{
303 if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
304 return IRQ_HANDLED;
305
306 /* delay until after any ac interrupt */
307 mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
308
309 return IRQ_HANDLED;
310}
311
312irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
313{
314 int is_fatal = 0;
315
316 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
317 dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
318 is_fatal = 1;
319 }
320
321 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
322 dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
323 is_fatal = 1;
324 }
325
326 if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
327 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
328 apm_queue_event(APM_CRITICAL_SUSPEND);
329 }
330
331 return IRQ_HANDLED;
332}
333
334/*
335 * Maintain an average of the last 10 readings
336 */
337#define SHARPSL_CNV_VALUE_NUM 10
338static int sharpsl_ad_index;
339
340static void sharpsl_average_clear(void)
341{
342 sharpsl_ad_index = 0;
343}
344
345static int sharpsl_average_value(int ad)
346{
347 int i, ad_val = 0;
348 static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
349
350 if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
351 sharpsl_ad_index = 0;
352 return ad;
353 }
354
355 sharpsl_ad[sharpsl_ad_index] = ad;
356 sharpsl_ad_index++;
357 if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
358 for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
359 sharpsl_ad[i] = sharpsl_ad[i+1];
360 sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
361 }
362 for (i=0; i < sharpsl_ad_index; i++)
363 ad_val += sharpsl_ad[i];
364
365 return (ad_val / sharpsl_ad_index);
366}
367
368/*
369 * Take an array of 5 integers, remove the maximum and minimum values
370 * and return the average.
371 */
372static int get_select_val(int *val)
373{
374 int i, j, k, temp, sum = 0;
375
376 /* Find MAX val */
377 temp = val[0];
378 j=0;
379 for (i=1; i<5; i++) {
380 if (temp < val[i]) {
381 temp = val[i];
382 j = i;
383 }
384 }
385
386 /* Find MIN val */
387 temp = val[4];
388 k=4;
389 for (i=3; i>=0; i--) {
390 if (temp > val[i]) {
391 temp = val[i];
392 k = i;
393 }
394 }
395
396 for (i=0; i<5; i++)
397 if (i != j && i != k )
398 sum += val[i];
399
400 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]);
401
402 return (sum/3);
403}
404
405static int sharpsl_check_battery_temp(void)
406{
407 int val, i, buff[5];
408
409 /* Check battery temperature */
410 for (i=0; i<5; i++) {
411 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
412 sharpsl_pm.machinfo->measure_temp(1);
413 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
414 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
415 sharpsl_pm.machinfo->measure_temp(0);
416 }
417
418 val = get_select_val(buff);
419
420 dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
421 if (val > sharpsl_pm.machinfo->charge_on_temp) {
422 printk(KERN_WARNING "Not charging: temperature out of limits.\n");
423 return -1;
424 }
425
426 return 0;
427}
428
429#ifdef CONFIG_PM
430static int sharpsl_check_battery_voltage(void)
431{
432 int val, i, buff[5];
433
434 /* disable charge, enable discharge */
435 sharpsl_pm.machinfo->charge(0);
436 sharpsl_pm.machinfo->discharge(1);
437 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
438
439 if (sharpsl_pm.machinfo->discharge1)
440 sharpsl_pm.machinfo->discharge1(1);
441
442 /* Check battery voltage */
443 for (i=0; i<5; i++) {
444 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
445 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
446 }
447
448 if (sharpsl_pm.machinfo->discharge1)
449 sharpsl_pm.machinfo->discharge1(0);
450
451 sharpsl_pm.machinfo->discharge(0);
452
453 val = get_select_val(buff);
454 dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
455
456 if (val < sharpsl_pm.machinfo->charge_on_volt)
457 return -1;
458
459 return 0;
460}
461#endif
462
463static int sharpsl_ac_check(void)
464{
465 int temp, i, buff[5];
466
467 for (i=0; i<5; i++) {
468 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
469 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
470 }
471
472 temp = get_select_val(buff);
473 dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp);
474
475 if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
476 dev_err(sharpsl_pm.dev, "Error: AC check failed.\n");
477 return -1;
478 }
479
480 return 0;
481}
482
483#ifdef CONFIG_PM
484static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
485{
486 sharpsl_pm.flags |= SHARPSL_SUSPENDED;
487 flush_scheduled_work();
488
489 if (sharpsl_pm.charge_mode == CHRG_ON)
490 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
491 else
492 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
493
494 return 0;
495}
496
497static int sharpsl_pm_resume(struct platform_device *pdev)
498{
499 /* Clear the reset source indicators as they break the bootloader upon reboot */
500 RCSR = 0x0f;
501 sharpsl_average_clear();
502 sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
503 sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
504
505 return 0;
506}
507
508static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
509{
510 dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR);
511
512 dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
513 /* not charging and AC-IN! */
514
515 if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
516 dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
517 sharpsl_pm.charge_mode = CHRG_OFF;
518 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
519 sharpsl_off_charge_battery();
520 }
521
522 sharpsl_pm.machinfo->presuspend();
523
524 PEDR = 0xffffffff; /* clear it */
525
526 sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
527 if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
528 RTSR &= RTSR_ALE;
529 RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
530 dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR);
531 sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
532 } else if (alarm_enable) {
533 RTSR &= RTSR_ALE;
534 RTAR = alarm_time;
535 dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR);
536 } else {
537 dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
538 }
539
540 pxa_pm_enter(state);
541
542 sharpsl_pm.machinfo->postsuspend();
543
544 dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR);
545}
546
547static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
548{
549 if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) )
550 {
551 if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
552 dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
553 corgi_goto_sleep(alarm_time, alarm_enable, state);
554 return 1;
555 }
556 if(sharpsl_off_charge_battery()) {
557 dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
558 corgi_goto_sleep(alarm_time, alarm_enable, state);
559 return 1;
560 }
561 dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
562 }
563
564 if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) )
565 {
566 dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n");
567 corgi_goto_sleep(alarm_time, alarm_enable, state);
568 return 1;
569 }
570
571 return 0;
572}
573
574static int corgi_pxa_pm_enter(suspend_state_t state)
575{
576 unsigned long alarm_time = RTAR;
577 unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0);
578
579 dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n");
580
581 corgi_goto_sleep(alarm_time, alarm_status, state);
582
583 while (corgi_enter_suspend(alarm_time,alarm_status,state))
584 {}
585
586 if (sharpsl_pm.machinfo->earlyresume)
587 sharpsl_pm.machinfo->earlyresume();
588
589 dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n");
590
591 return 0;
592}
593
594/*
595 * Check for fatal battery errors
596 * Fatal returns -1
597 */
598static int sharpsl_fatal_check(void)
599{
600 int buff[5], temp, i, acin;
601
602 dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n");
603
604 /* Check AC-Adapter */
605 acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
606
607 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
608 sharpsl_pm.machinfo->charge(0);
609 udelay(100);
610 sharpsl_pm.machinfo->discharge(1); /* enable discharge */
611 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
612 }
613
614 if (sharpsl_pm.machinfo->discharge1)
615 sharpsl_pm.machinfo->discharge1(1);
616
617 /* Check battery : check inserting battery ? */
618 for (i=0; i<5; i++) {
619 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
620 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
621 }
622
623 if (sharpsl_pm.machinfo->discharge1)
624 sharpsl_pm.machinfo->discharge1(0);
625
626 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
627 udelay(100);
628 sharpsl_pm.machinfo->charge(1);
629 sharpsl_pm.machinfo->discharge(0);
630 }
631
632 temp = get_select_val(buff);
633 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));
634
635 if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) ||
636 (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt)))
637 return -1;
638 return 0;
639}
640
641static int sharpsl_off_charge_error(void)
642{
643 dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n");
644 sharpsl_pm.machinfo->charge(0);
645 sharpsl_pm_led(SHARPSL_LED_ERROR);
646 sharpsl_pm.charge_mode = CHRG_ERROR;
647 return 1;
648}
649
650/*
651 * Charging Control while suspended
652 * Return 1 - go straight to sleep
653 * Return 0 - sleep or wakeup depending on other factors
654 */
655static int sharpsl_off_charge_battery(void)
656{
657 int time;
658
659 dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode);
660
661 if (sharpsl_pm.charge_mode == CHRG_OFF) {
662 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n");
663
664 /* AC Check */
665 if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0))
666 return sharpsl_off_charge_error();
667
668 /* Start Charging */
669 sharpsl_pm_led(SHARPSL_LED_ON);
670 sharpsl_pm.machinfo->charge(0);
671 mdelay(SHARPSL_CHARGE_WAIT_TIME);
672 sharpsl_pm.machinfo->charge(1);
673
674 sharpsl_pm.charge_mode = CHRG_ON;
675 sharpsl_pm.full_count = 0;
676
677 return 1;
678 } else if (sharpsl_pm.charge_mode != CHRG_ON) {
679 return 1;
680 }
681
682 if (sharpsl_pm.full_count == 0) {
683 int time;
684
685 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n");
686
687 if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0))
688 return sharpsl_off_charge_error();
689
690 sharpsl_pm.machinfo->charge(0);
691 mdelay(SHARPSL_CHARGE_WAIT_TIME);
692 sharpsl_pm.machinfo->charge(1);
693 sharpsl_pm.charge_mode = CHRG_ON;
694
695 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
696
697 time = RCNR;
698 while(1) {
699 /* Check if any wakeup event had occurred */
700 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
701 return 0;
702 /* Check for timeout */
703 if ((RCNR - time) > SHARPSL_WAIT_CO_TIME)
704 return 1;
705 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
706 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n");
707 sharpsl_pm.full_count++;
708 sharpsl_pm.machinfo->charge(0);
709 mdelay(SHARPSL_CHARGE_WAIT_TIME);
710 sharpsl_pm.machinfo->charge(1);
711 return 1;
712 }
713 }
714 }
715
716 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n");
717
718 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
719
720 time = RCNR;
721 while(1) {
722 /* Check if any wakeup event had occurred */
723 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
724 return 0;
725 /* Check for timeout */
726 if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
727 if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
728 dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
729 sharpsl_pm.full_count = 0;
730 }
731 sharpsl_pm.full_count++;
732 return 1;
733 }
734 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
735 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
736 sharpsl_pm_led(SHARPSL_LED_OFF);
737 sharpsl_pm.machinfo->charge(0);
738 sharpsl_pm.charge_mode = CHRG_DONE;
739 return 1;
740 }
741 }
742}
743#else
744#define sharpsl_pm_suspend NULL
745#define sharpsl_pm_resume NULL
746#endif
747
748static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
749{
750 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent);
751}
752
753static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
754{
755 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage);
756}
757
758static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
759static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
760
761extern void (*apm_get_power_status)(struct apm_power_info *);
762
763static void sharpsl_apm_get_power_status(struct apm_power_info *info)
764{
765 info->ac_line_status = sharpsl_pm.battstat.ac_status;
766
767 if (sharpsl_pm.charge_mode == CHRG_ON)
768 info->battery_status = APM_BATTERY_STATUS_CHARGING;
769 else
770 info->battery_status = sharpsl_pm.battstat.mainbat_status;
771
772 info->battery_flag = (1 << info->battery_status);
773 info->battery_life = sharpsl_pm.battstat.mainbat_percent;
774}
775
776#ifdef CONFIG_PM
777static struct platform_suspend_ops sharpsl_pm_ops = {
778 .enter = corgi_pxa_pm_enter,
779 .valid = suspend_valid_only_mem,
780};
781#endif
782
783static int __init sharpsl_pm_probe(struct platform_device *pdev)
784{
785 int ret;
786
787 if (!pdev->dev.platform_data)
788 return -EINVAL;
789
790 sharpsl_pm.dev = &pdev->dev;
791 sharpsl_pm.machinfo = pdev->dev.platform_data;
792 sharpsl_pm.charge_mode = CHRG_OFF;
793 sharpsl_pm.flags = 0;
794
795 init_timer(&sharpsl_pm.ac_timer);
796 sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
797
798 init_timer(&sharpsl_pm.chrg_full_timer);
799 sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
800
801 led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
802
803 sharpsl_pm.machinfo->init();
804
805 ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage);
806 ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
807 if (ret != 0)
808 dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret);
809
810 apm_get_power_status = sharpsl_apm_get_power_status;
811
812#ifdef CONFIG_PM
813 suspend_set_ops(&sharpsl_pm_ops);
814#endif
815
816 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
817
818 return 0;
819}
820
821static int sharpsl_pm_remove(struct platform_device *pdev)
822{
823 suspend_set_ops(NULL);
824
825 device_remove_file(&pdev->dev, &dev_attr_battery_percentage);
826 device_remove_file(&pdev->dev, &dev_attr_battery_voltage);
827
828 led_trigger_unregister_simple(sharpsl_charge_led_trigger);
829
830 sharpsl_pm.machinfo->exit();
831
832 del_timer_sync(&sharpsl_pm.chrg_full_timer);
833 del_timer_sync(&sharpsl_pm.ac_timer);
834
835 return 0;
836}
837
838static struct platform_driver sharpsl_pm_driver = {
839 .probe = sharpsl_pm_probe,
840 .remove = sharpsl_pm_remove,
841 .suspend = sharpsl_pm_suspend,
842 .resume = sharpsl_pm_resume,
843 .driver = {
844 .name = "sharpsl-pm",
845 },
846};
847
848static int __devinit sharpsl_pm_init(void)
849{
850 return platform_driver_register(&sharpsl_pm_driver);
851}
852
853static void sharpsl_pm_exit(void)
854{
855 platform_driver_unregister(&sharpsl_pm_driver);
856}
857
858late_initcall(sharpsl_pm_init);
859module_exit(sharpsl_pm_exit);
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 2e45630ebdee..f4533f8ff4e8 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -94,6 +94,10 @@ config PXA_SHARPSL
94 SL-C3000 (Spitz), SL-C3100 (Borzoi) or SL-C6000x (Tosa) 94 SL-C3000 (Spitz), SL-C3100 (Borzoi) or SL-C6000x (Tosa)
95 handheld computer. 95 handheld computer.
96 96
97config SHARPSL_PM
98 bool
99 select APM_EMULATION
100
97config CORGI_SSP_DEPRECATED 101config CORGI_SSP_DEPRECATED
98 bool 102 bool
99 select PXA_SSP 103 select PXA_SSP
diff --git a/arch/arm/include/asm/hardware/sharpsl_pm.h b/arch/arm/mach-pxa/include/mach/sharpsl_pm.h
index 2d00db22b981..2d00db22b981 100644
--- a/arch/arm/include/asm/hardware/sharpsl_pm.h
+++ b/arch/arm/mach-pxa/include/mach/sharpsl_pm.h
diff --git a/arch/arm/mach-pxa/sharpsl.h b/arch/arm/mach-pxa/sharpsl.h
index 047909a76651..f1cd00ea0322 100644
--- a/arch/arm/mach-pxa/sharpsl.h
+++ b/arch/arm/mach-pxa/sharpsl.h
@@ -7,7 +7,7 @@
7 * 7 *
8 */ 8 */
9 9
10#include <asm/hardware/sharpsl_pm.h> 10#include <mach/sharpsl_pm.h>
11 11
12/* 12/*
13 * SharpSL SSP Driver 13 * SharpSL SSP Driver
diff --git a/arch/arm/mach-pxa/sharpsl_pm.c b/arch/arm/mach-pxa/sharpsl_pm.c
index 16b4ec67e3b6..9d61c4916968 100644
--- a/arch/arm/mach-pxa/sharpsl_pm.c
+++ b/arch/arm/mach-pxa/sharpsl_pm.c
@@ -21,13 +21,63 @@
21#include <linux/irq.h> 21#include <linux/irq.h>
22#include <linux/platform_device.h> 22#include <linux/platform_device.h>
23#include <linux/apm-emulation.h> 23#include <linux/apm-emulation.h>
24#include <linux/timer.h>
25#include <linux/apm_bios.h>
26#include <linux/delay.h>
27#include <linux/leds.h>
28#include <linux/suspend.h>
24 29
25#include <mach/hardware.h> 30#include <mach/hardware.h>
26#include <asm/mach-types.h> 31#include <asm/mach-types.h>
27#include <mach/pm.h> 32#include <mach/pm.h>
33#include <mach/pxa2xx-regs.h>
28#include <mach/pxa2xx-gpio.h> 34#include <mach/pxa2xx-gpio.h>
35#include <mach/regs-rtc.h>
29#include <mach/sharpsl.h> 36#include <mach/sharpsl.h>
30#include "sharpsl.h" 37#include <mach/sharpsl_pm.h>
38
39/*
40 * Constants
41 */
42#define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */
43#define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */
44#define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */
45#define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */
46
47#define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */
48#define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */
49#define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */
50#define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */
51#define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */
52#define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */
53#define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */
54#define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */
55
56/*
57 * Prototypes
58 */
59#ifdef CONFIG_PM
60static int sharpsl_off_charge_battery(void);
61static int sharpsl_check_battery_voltage(void);
62static int sharpsl_fatal_check(void);
63#endif
64static int sharpsl_check_battery_temp(void);
65static int sharpsl_ac_check(void);
66static int sharpsl_average_value(int ad);
67static void sharpsl_average_clear(void);
68static void sharpsl_charge_toggle(struct work_struct *private_);
69static void sharpsl_battery_thread(struct work_struct *private_);
70
71
72/*
73 * Variables
74 */
75struct sharpsl_pm_status sharpsl_pm;
76DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle);
77DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread);
78DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger);
79
80
31 81
32struct battery_thresh spitz_battery_levels_acin[] = { 82struct battery_thresh spitz_battery_levels_acin[] = {
33 { 213, 100}, 83 { 213, 100},
@@ -189,3 +239,785 @@ void sharpsl_pm_pxa_remove(void)
189 if (sharpsl_pm.machinfo->batfull_irq) 239 if (sharpsl_pm.machinfo->batfull_irq)
190 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr); 240 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr);
191} 241}
242
243static int get_percentage(int voltage)
244{
245 int i = sharpsl_pm.machinfo->bat_levels - 1;
246 int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0;
247 struct battery_thresh *thresh;
248
249 if (sharpsl_pm.charge_mode == CHRG_ON)
250 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin;
251 else
252 thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac;
253
254 while (i > 0 && (voltage > thresh[i].voltage))
255 i--;
256
257 return thresh[i].percentage;
258}
259
260static int get_apm_status(int voltage)
261{
262 int low_thresh, high_thresh;
263
264 if (sharpsl_pm.charge_mode == CHRG_ON) {
265 high_thresh = sharpsl_pm.machinfo->status_high_acin;
266 low_thresh = sharpsl_pm.machinfo->status_low_acin;
267 } else {
268 high_thresh = sharpsl_pm.machinfo->status_high_noac;
269 low_thresh = sharpsl_pm.machinfo->status_low_noac;
270 }
271
272 if (voltage >= high_thresh)
273 return APM_BATTERY_STATUS_HIGH;
274 if (voltage >= low_thresh)
275 return APM_BATTERY_STATUS_LOW;
276 return APM_BATTERY_STATUS_CRITICAL;
277}
278
279void sharpsl_battery_kick(void)
280{
281 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125));
282}
283EXPORT_SYMBOL(sharpsl_battery_kick);
284
285
286static void sharpsl_battery_thread(struct work_struct *private_)
287{
288 int voltage, percent, apm_status, i = 0;
289
290 if (!sharpsl_pm.machinfo)
291 return;
292
293 sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE);
294
295 /* Corgi cannot confirm when battery fully charged so periodically kick! */
296 if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON)
297 && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
298 schedule_delayed_work(&toggle_charger, 0);
299
300 while(1) {
301 voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
302
303 if (voltage > 0) break;
304 if (i++ > 5) {
305 voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
306 dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
307 break;
308 }
309 }
310
311 voltage = sharpsl_average_value(voltage);
312 apm_status = get_apm_status(voltage);
313 percent = get_percentage(voltage);
314
315 /* At low battery voltages, the voltage has a tendency to start
316 creeping back up so we try to avoid this here */
317 if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) {
318 sharpsl_pm.battstat.mainbat_voltage = voltage;
319 sharpsl_pm.battstat.mainbat_status = apm_status;
320 sharpsl_pm.battstat.mainbat_percent = percent;
321 }
322
323 dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
324 sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
325
326#ifdef CONFIG_BACKLIGHT_CORGI
327 /* If battery is low. limit backlight intensity to save power. */
328 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
329 && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) ||
330 (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
331 if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) {
332 sharpsl_pm.machinfo->backlight_limit(1);
333 sharpsl_pm.flags |= SHARPSL_BL_LIMIT;
334 }
335 } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) {
336 sharpsl_pm.machinfo->backlight_limit(0);
337 sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT;
338 }
339#endif
340
341 /* Suspend if critical battery level */
342 if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
343 && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
344 && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
345 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
346 dev_err(sharpsl_pm.dev, "Fatal Off\n");
347 apm_queue_event(APM_CRITICAL_SUSPEND);
348 }
349
350 schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME);
351}
352
353void sharpsl_pm_led(int val)
354{
355 if (val == SHARPSL_LED_ERROR) {
356 dev_err(sharpsl_pm.dev, "Charging Error!\n");
357 } else if (val == SHARPSL_LED_ON) {
358 dev_dbg(sharpsl_pm.dev, "Charge LED On\n");
359 led_trigger_event(sharpsl_charge_led_trigger, LED_FULL);
360 } else {
361 dev_dbg(sharpsl_pm.dev, "Charge LED Off\n");
362 led_trigger_event(sharpsl_charge_led_trigger, LED_OFF);
363 }
364}
365
366static void sharpsl_charge_on(void)
367{
368 dev_dbg(sharpsl_pm.dev, "Turning Charger On\n");
369
370 sharpsl_pm.full_count = 0;
371 sharpsl_pm.charge_mode = CHRG_ON;
372 schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250));
373 schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500));
374}
375
376static void sharpsl_charge_off(void)
377{
378 dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n");
379
380 sharpsl_pm.machinfo->charge(0);
381 sharpsl_pm_led(SHARPSL_LED_OFF);
382 sharpsl_pm.charge_mode = CHRG_OFF;
383
384 schedule_delayed_work(&sharpsl_bat, 0);
385}
386
387static void sharpsl_charge_error(void)
388{
389 sharpsl_pm_led(SHARPSL_LED_ERROR);
390 sharpsl_pm.machinfo->charge(0);
391 sharpsl_pm.charge_mode = CHRG_ERROR;
392}
393
394static void sharpsl_charge_toggle(struct work_struct *private_)
395{
396 dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies);
397
398 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
399 sharpsl_charge_off();
400 return;
401 } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) {
402 sharpsl_charge_error();
403 return;
404 }
405
406 sharpsl_pm_led(SHARPSL_LED_ON);
407 sharpsl_pm.machinfo->charge(0);
408 mdelay(SHARPSL_CHARGE_WAIT_TIME);
409 sharpsl_pm.machinfo->charge(1);
410
411 sharpsl_pm.charge_start_time = jiffies;
412}
413
414static void sharpsl_ac_timer(unsigned long data)
415{
416 int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
417
418 dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin);
419
420 sharpsl_average_clear();
421 if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
422 sharpsl_charge_on();
423 else if (sharpsl_pm.charge_mode == CHRG_ON)
424 sharpsl_charge_off();
425
426 schedule_delayed_work(&sharpsl_bat, 0);
427}
428
429
430irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
431{
432 /* Delay the event slightly to debounce */
433 /* Must be a smaller delay than the chrg_full_isr below */
434 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
435
436 return IRQ_HANDLED;
437}
438
439static void sharpsl_chrg_full_timer(unsigned long data)
440{
441 dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies);
442
443 sharpsl_pm.full_count++;
444
445 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
446 dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n");
447 if (sharpsl_pm.charge_mode == CHRG_ON)
448 sharpsl_charge_off();
449 } else if (sharpsl_pm.full_count < 2) {
450 dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n");
451 schedule_delayed_work(&toggle_charger, 0);
452 } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) {
453 dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n");
454 schedule_delayed_work(&toggle_charger, 0);
455 } else {
456 sharpsl_charge_off();
457 sharpsl_pm.charge_mode = CHRG_DONE;
458 dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n");
459 }
460}
461
462/* Charging Finished Interrupt (Not present on Corgi) */
463/* Can trigger at the same time as an AC status change so
464 delay until after that has been processed */
465irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
466{
467 if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
468 return IRQ_HANDLED;
469
470 /* delay until after any ac interrupt */
471 mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500));
472
473 return IRQ_HANDLED;
474}
475
476irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
477{
478 int is_fatal = 0;
479
480 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) {
481 dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n");
482 is_fatal = 1;
483 }
484
485 if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) {
486 dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n");
487 is_fatal = 1;
488 }
489
490 if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) {
491 sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
492 apm_queue_event(APM_CRITICAL_SUSPEND);
493 }
494
495 return IRQ_HANDLED;
496}
497
498/*
499 * Maintain an average of the last 10 readings
500 */
501#define SHARPSL_CNV_VALUE_NUM 10
502static int sharpsl_ad_index;
503
504static void sharpsl_average_clear(void)
505{
506 sharpsl_ad_index = 0;
507}
508
509static int sharpsl_average_value(int ad)
510{
511 int i, ad_val = 0;
512 static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1];
513
514 if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) {
515 sharpsl_ad_index = 0;
516 return ad;
517 }
518
519 sharpsl_ad[sharpsl_ad_index] = ad;
520 sharpsl_ad_index++;
521 if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
522 for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
523 sharpsl_ad[i] = sharpsl_ad[i+1];
524 sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
525 }
526 for (i=0; i < sharpsl_ad_index; i++)
527 ad_val += sharpsl_ad[i];
528
529 return (ad_val / sharpsl_ad_index);
530}
531
532/*
533 * Take an array of 5 integers, remove the maximum and minimum values
534 * and return the average.
535 */
536static int get_select_val(int *val)
537{
538 int i, j, k, temp, sum = 0;
539
540 /* Find MAX val */
541 temp = val[0];
542 j=0;
543 for (i=1; i<5; i++) {
544 if (temp < val[i]) {
545 temp = val[i];
546 j = i;
547 }
548 }
549
550 /* Find MIN val */
551 temp = val[4];
552 k=4;
553 for (i=3; i>=0; i--) {
554 if (temp > val[i]) {
555 temp = val[i];
556 k = i;
557 }
558 }
559
560 for (i=0; i<5; i++)
561 if (i != j && i != k )
562 sum += val[i];
563
564 dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]);
565
566 return (sum/3);
567}
568
569static int sharpsl_check_battery_temp(void)
570{
571 int val, i, buff[5];
572
573 /* Check battery temperature */
574 for (i=0; i<5; i++) {
575 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
576 sharpsl_pm.machinfo->measure_temp(1);
577 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
578 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP);
579 sharpsl_pm.machinfo->measure_temp(0);
580 }
581
582 val = get_select_val(buff);
583
584 dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val);
585 if (val > sharpsl_pm.machinfo->charge_on_temp) {
586 printk(KERN_WARNING "Not charging: temperature out of limits.\n");
587 return -1;
588 }
589
590 return 0;
591}
592
593#ifdef CONFIG_PM
594static int sharpsl_check_battery_voltage(void)
595{
596 int val, i, buff[5];
597
598 /* disable charge, enable discharge */
599 sharpsl_pm.machinfo->charge(0);
600 sharpsl_pm.machinfo->discharge(1);
601 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
602
603 if (sharpsl_pm.machinfo->discharge1)
604 sharpsl_pm.machinfo->discharge1(1);
605
606 /* Check battery voltage */
607 for (i=0; i<5; i++) {
608 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
609 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
610 }
611
612 if (sharpsl_pm.machinfo->discharge1)
613 sharpsl_pm.machinfo->discharge1(0);
614
615 sharpsl_pm.machinfo->discharge(0);
616
617 val = get_select_val(buff);
618 dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val);
619
620 if (val < sharpsl_pm.machinfo->charge_on_volt)
621 return -1;
622
623 return 0;
624}
625#endif
626
627static int sharpsl_ac_check(void)
628{
629 int temp, i, buff[5];
630
631 for (i=0; i<5; i++) {
632 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
633 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
634 }
635
636 temp = get_select_val(buff);
637 dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp);
638
639 if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
640 dev_err(sharpsl_pm.dev, "Error: AC check failed.\n");
641 return -1;
642 }
643
644 return 0;
645}
646
647#ifdef CONFIG_PM
648static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state)
649{
650 sharpsl_pm.flags |= SHARPSL_SUSPENDED;
651 flush_scheduled_work();
652
653 if (sharpsl_pm.charge_mode == CHRG_ON)
654 sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG;
655 else
656 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
657
658 return 0;
659}
660
661static int sharpsl_pm_resume(struct platform_device *pdev)
662{
663 /* Clear the reset source indicators as they break the bootloader upon reboot */
664 RCSR = 0x0f;
665 sharpsl_average_clear();
666 sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED;
667 sharpsl_pm.flags &= ~SHARPSL_SUSPENDED;
668
669 return 0;
670}
671
672static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
673{
674 dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR);
675
676 dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
677 /* not charging and AC-IN! */
678
679 if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
680 dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n");
681 sharpsl_pm.charge_mode = CHRG_OFF;
682 sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG;
683 sharpsl_off_charge_battery();
684 }
685
686 sharpsl_pm.machinfo->presuspend();
687
688 PEDR = 0xffffffff; /* clear it */
689
690 sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE;
691 if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
692 RTSR &= RTSR_ALE;
693 RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
694 dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR);
695 sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
696 } else if (alarm_enable) {
697 RTSR &= RTSR_ALE;
698 RTAR = alarm_time;
699 dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR);
700 } else {
701 dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
702 }
703
704 pxa_pm_enter(state);
705
706 sharpsl_pm.machinfo->postsuspend();
707
708 dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR);
709}
710
711static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
712{
713 if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) )
714 {
715 if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
716 dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
717 corgi_goto_sleep(alarm_time, alarm_enable, state);
718 return 1;
719 }
720 if(sharpsl_off_charge_battery()) {
721 dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
722 corgi_goto_sleep(alarm_time, alarm_enable, state);
723 return 1;
724 }
725 dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n");
726 }
727
728 if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) )
729 {
730 dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n");
731 corgi_goto_sleep(alarm_time, alarm_enable, state);
732 return 1;
733 }
734
735 return 0;
736}
737
738static int corgi_pxa_pm_enter(suspend_state_t state)
739{
740 unsigned long alarm_time = RTAR;
741 unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0);
742
743 dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n");
744
745 corgi_goto_sleep(alarm_time, alarm_status, state);
746
747 while (corgi_enter_suspend(alarm_time,alarm_status,state))
748 {}
749
750 if (sharpsl_pm.machinfo->earlyresume)
751 sharpsl_pm.machinfo->earlyresume();
752
753 dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n");
754
755 return 0;
756}
757
758/*
759 * Check for fatal battery errors
760 * Fatal returns -1
761 */
762static int sharpsl_fatal_check(void)
763{
764 int buff[5], temp, i, acin;
765
766 dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n");
767
768 /* Check AC-Adapter */
769 acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
770
771 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
772 sharpsl_pm.machinfo->charge(0);
773 udelay(100);
774 sharpsl_pm.machinfo->discharge(1); /* enable discharge */
775 mdelay(SHARPSL_WAIT_DISCHARGE_ON);
776 }
777
778 if (sharpsl_pm.machinfo->discharge1)
779 sharpsl_pm.machinfo->discharge1(1);
780
781 /* Check battery : check inserting battery ? */
782 for (i=0; i<5; i++) {
783 buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
784 mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
785 }
786
787 if (sharpsl_pm.machinfo->discharge1)
788 sharpsl_pm.machinfo->discharge1(0);
789
790 if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) {
791 udelay(100);
792 sharpsl_pm.machinfo->charge(1);
793 sharpsl_pm.machinfo->discharge(0);
794 }
795
796 temp = get_select_val(buff);
797 dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check: acin: %d, discharge voltage: %d, no discharge: %ld\n", acin, temp, sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT));
798
799 if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) ||
800 (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt)))
801 return -1;
802 return 0;
803}
804
805static int sharpsl_off_charge_error(void)
806{
807 dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n");
808 sharpsl_pm.machinfo->charge(0);
809 sharpsl_pm_led(SHARPSL_LED_ERROR);
810 sharpsl_pm.charge_mode = CHRG_ERROR;
811 return 1;
812}
813
814/*
815 * Charging Control while suspended
816 * Return 1 - go straight to sleep
817 * Return 0 - sleep or wakeup depending on other factors
818 */
819static int sharpsl_off_charge_battery(void)
820{
821 int time;
822
823 dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode);
824
825 if (sharpsl_pm.charge_mode == CHRG_OFF) {
826 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n");
827
828 /* AC Check */
829 if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0))
830 return sharpsl_off_charge_error();
831
832 /* Start Charging */
833 sharpsl_pm_led(SHARPSL_LED_ON);
834 sharpsl_pm.machinfo->charge(0);
835 mdelay(SHARPSL_CHARGE_WAIT_TIME);
836 sharpsl_pm.machinfo->charge(1);
837
838 sharpsl_pm.charge_mode = CHRG_ON;
839 sharpsl_pm.full_count = 0;
840
841 return 1;
842 } else if (sharpsl_pm.charge_mode != CHRG_ON) {
843 return 1;
844 }
845
846 if (sharpsl_pm.full_count == 0) {
847 int time;
848
849 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n");
850
851 if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0))
852 return sharpsl_off_charge_error();
853
854 sharpsl_pm.machinfo->charge(0);
855 mdelay(SHARPSL_CHARGE_WAIT_TIME);
856 sharpsl_pm.machinfo->charge(1);
857 sharpsl_pm.charge_mode = CHRG_ON;
858
859 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
860
861 time = RCNR;
862 while(1) {
863 /* Check if any wakeup event had occurred */
864 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
865 return 0;
866 /* Check for timeout */
867 if ((RCNR - time) > SHARPSL_WAIT_CO_TIME)
868 return 1;
869 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
870 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n");
871 sharpsl_pm.full_count++;
872 sharpsl_pm.machinfo->charge(0);
873 mdelay(SHARPSL_CHARGE_WAIT_TIME);
874 sharpsl_pm.machinfo->charge(1);
875 return 1;
876 }
877 }
878 }
879
880 dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n");
881
882 mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
883
884 time = RCNR;
885 while(1) {
886 /* Check if any wakeup event had occurred */
887 if (sharpsl_pm.machinfo->charger_wakeup() != 0)
888 return 0;
889 /* Check for timeout */
890 if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
891 if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) {
892 dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n");
893 sharpsl_pm.full_count = 0;
894 }
895 sharpsl_pm.full_count++;
896 return 1;
897 }
898 if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) {
899 dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n");
900 sharpsl_pm_led(SHARPSL_LED_OFF);
901 sharpsl_pm.machinfo->charge(0);
902 sharpsl_pm.charge_mode = CHRG_DONE;
903 return 1;
904 }
905 }
906}
907#else
908#define sharpsl_pm_suspend NULL
909#define sharpsl_pm_resume NULL
910#endif
911
912static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
913{
914 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent);
915}
916
917static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
918{
919 return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage);
920}
921
922static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
923static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
924
925extern void (*apm_get_power_status)(struct apm_power_info *);
926
927static void sharpsl_apm_get_power_status(struct apm_power_info *info)
928{
929 info->ac_line_status = sharpsl_pm.battstat.ac_status;
930
931 if (sharpsl_pm.charge_mode == CHRG_ON)
932 info->battery_status = APM_BATTERY_STATUS_CHARGING;
933 else
934 info->battery_status = sharpsl_pm.battstat.mainbat_status;
935
936 info->battery_flag = (1 << info->battery_status);
937 info->battery_life = sharpsl_pm.battstat.mainbat_percent;
938}
939
940#ifdef CONFIG_PM
941static struct platform_suspend_ops sharpsl_pm_ops = {
942 .enter = corgi_pxa_pm_enter,
943 .valid = suspend_valid_only_mem,
944};
945#endif
946
947static int __init sharpsl_pm_probe(struct platform_device *pdev)
948{
949 int ret;
950
951 if (!pdev->dev.platform_data)
952 return -EINVAL;
953
954 sharpsl_pm.dev = &pdev->dev;
955 sharpsl_pm.machinfo = pdev->dev.platform_data;
956 sharpsl_pm.charge_mode = CHRG_OFF;
957 sharpsl_pm.flags = 0;
958
959 init_timer(&sharpsl_pm.ac_timer);
960 sharpsl_pm.ac_timer.function = sharpsl_ac_timer;
961
962 init_timer(&sharpsl_pm.chrg_full_timer);
963 sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer;
964
965 led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger);
966
967 sharpsl_pm.machinfo->init();
968
969 ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage);
970 ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage);
971 if (ret != 0)
972 dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret);
973
974 apm_get_power_status = sharpsl_apm_get_power_status;
975
976#ifdef CONFIG_PM
977 suspend_set_ops(&sharpsl_pm_ops);
978#endif
979
980 mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250));
981
982 return 0;
983}
984
985static int sharpsl_pm_remove(struct platform_device *pdev)
986{
987 suspend_set_ops(NULL);
988
989 device_remove_file(&pdev->dev, &dev_attr_battery_percentage);
990 device_remove_file(&pdev->dev, &dev_attr_battery_voltage);
991
992 led_trigger_unregister_simple(sharpsl_charge_led_trigger);
993
994 sharpsl_pm.machinfo->exit();
995
996 del_timer_sync(&sharpsl_pm.chrg_full_timer);
997 del_timer_sync(&sharpsl_pm.ac_timer);
998
999 return 0;
1000}
1001
1002static struct platform_driver sharpsl_pm_driver = {
1003 .probe = sharpsl_pm_probe,
1004 .remove = sharpsl_pm_remove,
1005 .suspend = sharpsl_pm_suspend,
1006 .resume = sharpsl_pm_resume,
1007 .driver = {
1008 .name = "sharpsl-pm",
1009 },
1010};
1011
1012static int __devinit sharpsl_pm_init(void)
1013{
1014 return platform_driver_register(&sharpsl_pm_driver);
1015}
1016
1017static void sharpsl_pm_exit(void)
1018{
1019 platform_driver_unregister(&sharpsl_pm_driver);
1020}
1021
1022late_initcall(sharpsl_pm_init);
1023module_exit(sharpsl_pm_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-20 22:09:53 -0500