Commit | Line | Data |
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b7557de4 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> | |
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> | |
181bf8aa | 25 | #include <linux/leds.h> |
d608e52c | 26 | #include <linux/apm-emulation.h> |
95d9ffbe | 27 | #include <linux/suspend.h> |
b7557de4 RP |
28 | |
29 | #include <asm/hardware.h> | |
30 | #include <asm/mach-types.h> | |
31 | #include <asm/irq.h> | |
b7557de4 RP |
32 | #include <asm/arch/pm.h> |
33 | #include <asm/arch/pxa-regs.h> | |
0b0a9df6 | 34 | #include <asm/arch/pxa2xx-regs.h> |
b7557de4 RP |
35 | #include <asm/arch/sharpsl.h> |
36 | #include <asm/hardware/sharpsl_pm.h> | |
37 | ||
38 | /* | |
39 | * Constants | |
40 | */ | |
41 | #define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */ | |
42 | #define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */ | |
43 | #define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */ | |
44 | #define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */ | |
576b3ef2 | 45 | |
b7557de4 RP |
46 | #define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */ |
47 | #define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */ | |
48 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */ | |
49 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */ | |
50 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */ | |
51 | #define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */ | |
52 | #define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */ | |
53 | #define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */ | |
54 | ||
b7557de4 RP |
55 | /* |
56 | * Prototypes | |
57 | */ | |
58 | static int sharpsl_off_charge_battery(void); | |
59 | static int sharpsl_check_battery_temp(void); | |
60 | static int sharpsl_check_battery_voltage(void); | |
61 | static int sharpsl_ac_check(void); | |
62 | static int sharpsl_fatal_check(void); | |
63 | static int sharpsl_average_value(int ad); | |
64 | static void sharpsl_average_clear(void); | |
6d5aefb8 DH |
65 | static void sharpsl_charge_toggle(struct work_struct *private_); |
66 | static void sharpsl_battery_thread(struct work_struct *private_); | |
b7557de4 RP |
67 | |
68 | ||
69 | /* | |
70 | * Variables | |
71 | */ | |
72 | struct sharpsl_pm_status sharpsl_pm; | |
6d5aefb8 DH |
73 | DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle); |
74 | DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread); | |
181bf8aa | 75 | DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger); |
b7557de4 RP |
76 | |
77 | ||
78 | static int get_percentage(int voltage) | |
79 | { | |
80 | int i = sharpsl_pm.machinfo->bat_levels - 1; | |
f8703dc8 | 81 | int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0; |
b7557de4 RP |
82 | struct battery_thresh *thresh; |
83 | ||
84 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
f8703dc8 | 85 | thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin; |
b7557de4 | 86 | else |
f8703dc8 | 87 | thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac; |
b7557de4 RP |
88 | |
89 | while (i > 0 && (voltage > thresh[i].voltage)) | |
90 | i--; | |
91 | ||
92 | return thresh[i].percentage; | |
93 | } | |
94 | ||
95 | static int get_apm_status(int voltage) | |
96 | { | |
97 | int low_thresh, high_thresh; | |
98 | ||
99 | if (sharpsl_pm.charge_mode == CHRG_ON) { | |
100 | high_thresh = sharpsl_pm.machinfo->status_high_acin; | |
101 | low_thresh = sharpsl_pm.machinfo->status_low_acin; | |
102 | } else { | |
103 | high_thresh = sharpsl_pm.machinfo->status_high_noac; | |
104 | low_thresh = sharpsl_pm.machinfo->status_low_noac; | |
105 | } | |
106 | ||
107 | if (voltage >= high_thresh) | |
108 | return APM_BATTERY_STATUS_HIGH; | |
109 | if (voltage >= low_thresh) | |
110 | return APM_BATTERY_STATUS_LOW; | |
111 | return APM_BATTERY_STATUS_CRITICAL; | |
112 | } | |
113 | ||
114 | void sharpsl_battery_kick(void) | |
115 | { | |
116 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125)); | |
117 | } | |
118 | EXPORT_SYMBOL(sharpsl_battery_kick); | |
119 | ||
120 | ||
6d5aefb8 | 121 | static void sharpsl_battery_thread(struct work_struct *private_) |
b7557de4 RP |
122 | { |
123 | int voltage, percent, apm_status, i = 0; | |
124 | ||
125 | if (!sharpsl_pm.machinfo) | |
126 | return; | |
127 | ||
128 | sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE); | |
129 | ||
130 | /* Corgi cannot confirm when battery fully charged so periodically kick! */ | |
f8703dc8 | 131 | if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON) |
b7557de4 | 132 | && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL)) |
6d5aefb8 | 133 | schedule_delayed_work(&toggle_charger, 0); |
b7557de4 RP |
134 | |
135 | while(1) { | |
136 | voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); | |
137 | ||
138 | if (voltage > 0) break; | |
139 | if (i++ > 5) { | |
140 | voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage; | |
141 | dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n"); | |
142 | break; | |
143 | } | |
144 | } | |
145 | ||
146 | voltage = sharpsl_average_value(voltage); | |
147 | apm_status = get_apm_status(voltage); | |
148 | percent = get_percentage(voltage); | |
149 | ||
150 | /* At low battery voltages, the voltage has a tendency to start | |
151 | creeping back up so we try to avoid this here */ | |
152 | if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) { | |
153 | sharpsl_pm.battstat.mainbat_voltage = voltage; | |
154 | sharpsl_pm.battstat.mainbat_status = apm_status; | |
155 | sharpsl_pm.battstat.mainbat_percent = percent; | |
156 | } | |
157 | ||
aceb6f0b | 158 | dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage, |
b7557de4 RP |
159 | sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies); |
160 | ||
02a8e769 | 161 | #ifdef CONFIG_BACKLIGHT_CORGI |
b7557de4 RP |
162 | /* If battery is low. limit backlight intensity to save power. */ |
163 | if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) | |
164 | && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) || | |
165 | (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) { | |
166 | if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) { | |
f8703dc8 | 167 | sharpsl_pm.machinfo->backlight_limit(1); |
b7557de4 RP |
168 | sharpsl_pm.flags |= SHARPSL_BL_LIMIT; |
169 | } | |
170 | } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) { | |
f8703dc8 | 171 | sharpsl_pm.machinfo->backlight_limit(0); |
b7557de4 RP |
172 | sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT; |
173 | } | |
02a8e769 | 174 | #endif |
b7557de4 RP |
175 | |
176 | /* Suspend if critical battery level */ | |
177 | if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) | |
178 | && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL) | |
179 | && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) { | |
180 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; | |
181 | dev_err(sharpsl_pm.dev, "Fatal Off\n"); | |
182 | apm_queue_event(APM_CRITICAL_SUSPEND); | |
183 | } | |
184 | ||
185 | schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME); | |
186 | } | |
187 | ||
188 | void sharpsl_pm_led(int val) | |
189 | { | |
190 | if (val == SHARPSL_LED_ERROR) { | |
191 | dev_err(sharpsl_pm.dev, "Charging Error!\n"); | |
192 | } else if (val == SHARPSL_LED_ON) { | |
193 | dev_dbg(sharpsl_pm.dev, "Charge LED On\n"); | |
181bf8aa | 194 | led_trigger_event(sharpsl_charge_led_trigger, LED_FULL); |
b7557de4 RP |
195 | } else { |
196 | dev_dbg(sharpsl_pm.dev, "Charge LED Off\n"); | |
181bf8aa | 197 | led_trigger_event(sharpsl_charge_led_trigger, LED_OFF); |
b7557de4 RP |
198 | } |
199 | } | |
200 | ||
201 | static void sharpsl_charge_on(void) | |
202 | { | |
203 | dev_dbg(sharpsl_pm.dev, "Turning Charger On\n"); | |
204 | ||
205 | sharpsl_pm.full_count = 0; | |
206 | sharpsl_pm.charge_mode = CHRG_ON; | |
207 | schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250)); | |
208 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500)); | |
209 | } | |
210 | ||
211 | static void sharpsl_charge_off(void) | |
212 | { | |
213 | dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n"); | |
214 | ||
215 | sharpsl_pm.machinfo->charge(0); | |
216 | sharpsl_pm_led(SHARPSL_LED_OFF); | |
217 | sharpsl_pm.charge_mode = CHRG_OFF; | |
218 | ||
6d5aefb8 | 219 | schedule_delayed_work(&sharpsl_bat, 0); |
b7557de4 RP |
220 | } |
221 | ||
222 | static void sharpsl_charge_error(void) | |
223 | { | |
224 | sharpsl_pm_led(SHARPSL_LED_ERROR); | |
225 | sharpsl_pm.machinfo->charge(0); | |
226 | sharpsl_pm.charge_mode = CHRG_ERROR; | |
227 | } | |
228 | ||
6d5aefb8 | 229 | static void sharpsl_charge_toggle(struct work_struct *private_) |
b7557de4 RP |
230 | { |
231 | dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies); | |
232 | ||
233 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { | |
234 | sharpsl_charge_off(); | |
235 | return; | |
236 | } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) { | |
237 | sharpsl_charge_error(); | |
238 | return; | |
239 | } | |
240 | ||
241 | sharpsl_pm_led(SHARPSL_LED_ON); | |
242 | sharpsl_pm.machinfo->charge(0); | |
243 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
244 | sharpsl_pm.machinfo->charge(1); | |
245 | ||
246 | sharpsl_pm.charge_start_time = jiffies; | |
247 | } | |
248 | ||
249 | static void sharpsl_ac_timer(unsigned long data) | |
250 | { | |
251 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); | |
252 | ||
253 | dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin); | |
254 | ||
255 | sharpsl_average_clear(); | |
256 | if (acin && (sharpsl_pm.charge_mode != CHRG_ON)) | |
257 | sharpsl_charge_on(); | |
258 | else if (sharpsl_pm.charge_mode == CHRG_ON) | |
259 | sharpsl_charge_off(); | |
260 | ||
6d5aefb8 | 261 | schedule_delayed_work(&sharpsl_bat, 0); |
b7557de4 RP |
262 | } |
263 | ||
264 | ||
0cd61b68 | 265 | irqreturn_t sharpsl_ac_isr(int irq, void *dev_id) |
b7557de4 RP |
266 | { |
267 | /* Delay the event slightly to debounce */ | |
268 | /* Must be a smaller delay than the chrg_full_isr below */ | |
269 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); | |
270 | ||
271 | return IRQ_HANDLED; | |
272 | } | |
273 | ||
274 | static void sharpsl_chrg_full_timer(unsigned long data) | |
275 | { | |
276 | dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies); | |
277 | ||
278 | sharpsl_pm.full_count++; | |
279 | ||
280 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { | |
281 | dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n"); | |
282 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
283 | sharpsl_charge_off(); | |
284 | } else if (sharpsl_pm.full_count < 2) { | |
285 | dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n"); | |
6d5aefb8 | 286 | schedule_delayed_work(&toggle_charger, 0); |
b7557de4 RP |
287 | } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) { |
288 | dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n"); | |
6d5aefb8 | 289 | schedule_delayed_work(&toggle_charger, 0); |
b7557de4 RP |
290 | } else { |
291 | sharpsl_charge_off(); | |
292 | sharpsl_pm.charge_mode = CHRG_DONE; | |
293 | dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n"); | |
294 | } | |
295 | } | |
296 | ||
297 | /* Charging Finished Interrupt (Not present on Corgi) */ | |
6cbdc8c5 | 298 | /* Can trigger at the same time as an AC status change so |
b7557de4 | 299 | delay until after that has been processed */ |
0cd61b68 | 300 | irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id) |
b7557de4 RP |
301 | { |
302 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) | |
303 | return IRQ_HANDLED; | |
304 | ||
305 | /* delay until after any ac interrupt */ | |
306 | mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500)); | |
307 | ||
308 | return IRQ_HANDLED; | |
309 | } | |
310 | ||
0cd61b68 | 311 | irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id) |
b7557de4 RP |
312 | { |
313 | int is_fatal = 0; | |
314 | ||
315 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) { | |
316 | dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n"); | |
317 | is_fatal = 1; | |
318 | } | |
319 | ||
320 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) { | |
321 | dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n"); | |
322 | is_fatal = 1; | |
323 | } | |
324 | ||
325 | if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) { | |
326 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; | |
327 | apm_queue_event(APM_CRITICAL_SUSPEND); | |
328 | } | |
329 | ||
330 | return IRQ_HANDLED; | |
331 | } | |
332 | ||
333 | /* | |
334 | * Maintain an average of the last 10 readings | |
335 | */ | |
336 | #define SHARPSL_CNV_VALUE_NUM 10 | |
337 | static int sharpsl_ad_index; | |
338 | ||
339 | static void sharpsl_average_clear(void) | |
340 | { | |
341 | sharpsl_ad_index = 0; | |
342 | } | |
343 | ||
344 | static int sharpsl_average_value(int ad) | |
345 | { | |
346 | int i, ad_val = 0; | |
347 | static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1]; | |
348 | ||
349 | if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) { | |
350 | sharpsl_ad_index = 0; | |
351 | return ad; | |
352 | } | |
353 | ||
354 | sharpsl_ad[sharpsl_ad_index] = ad; | |
355 | sharpsl_ad_index++; | |
356 | if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) { | |
357 | for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++) | |
358 | sharpsl_ad[i] = sharpsl_ad[i+1]; | |
359 | sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1; | |
360 | } | |
361 | for (i=0; i < sharpsl_ad_index; i++) | |
362 | ad_val += sharpsl_ad[i]; | |
363 | ||
364 | return (ad_val / sharpsl_ad_index); | |
365 | } | |
366 | ||
367 | /* | |
368 | * Take an array of 5 integers, remove the maximum and minimum values | |
369 | * and return the average. | |
370 | */ | |
371 | static int get_select_val(int *val) | |
372 | { | |
373 | int i, j, k, temp, sum = 0; | |
374 | ||
375 | /* Find MAX val */ | |
376 | temp = val[0]; | |
377 | j=0; | |
378 | for (i=1; i<5; i++) { | |
379 | if (temp < val[i]) { | |
380 | temp = val[i]; | |
381 | j = i; | |
382 | } | |
383 | } | |
384 | ||
385 | /* Find MIN val */ | |
386 | temp = val[4]; | |
387 | k=4; | |
388 | for (i=3; i>=0; i--) { | |
389 | if (temp > val[i]) { | |
390 | temp = val[i]; | |
391 | k = i; | |
392 | } | |
393 | } | |
394 | ||
395 | for (i=0; i<5; i++) | |
396 | if (i != j && i != k ) | |
397 | sum += val[i]; | |
398 | ||
399 | 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]); | |
400 | ||
401 | return (sum/3); | |
402 | } | |
403 | ||
404 | static int sharpsl_check_battery_temp(void) | |
405 | { | |
406 | int val, i, buff[5]; | |
407 | ||
408 | /* Check battery temperature */ | |
409 | for (i=0; i<5; i++) { | |
410 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); | |
411 | sharpsl_pm.machinfo->measure_temp(1); | |
412 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); | |
413 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP); | |
414 | sharpsl_pm.machinfo->measure_temp(0); | |
415 | } | |
416 | ||
417 | val = get_select_val(buff); | |
418 | ||
419 | dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val); | |
2704f0e6 PM |
420 | if (val > sharpsl_pm.machinfo->charge_on_temp) { |
421 | printk(KERN_WARNING "Not charging: temperature out of limits.\n"); | |
b7557de4 | 422 | return -1; |
2704f0e6 | 423 | } |
b7557de4 RP |
424 | |
425 | return 0; | |
426 | } | |
427 | ||
428 | static int sharpsl_check_battery_voltage(void) | |
429 | { | |
430 | int val, i, buff[5]; | |
431 | ||
432 | /* disable charge, enable discharge */ | |
433 | sharpsl_pm.machinfo->charge(0); | |
434 | sharpsl_pm.machinfo->discharge(1); | |
435 | mdelay(SHARPSL_WAIT_DISCHARGE_ON); | |
436 | ||
437 | if (sharpsl_pm.machinfo->discharge1) | |
438 | sharpsl_pm.machinfo->discharge1(1); | |
439 | ||
440 | /* Check battery voltage */ | |
441 | for (i=0; i<5; i++) { | |
442 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); | |
443 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); | |
444 | } | |
445 | ||
446 | if (sharpsl_pm.machinfo->discharge1) | |
447 | sharpsl_pm.machinfo->discharge1(0); | |
448 | ||
449 | sharpsl_pm.machinfo->discharge(0); | |
450 | ||
451 | val = get_select_val(buff); | |
452 | dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val); | |
453 | ||
f8703dc8 | 454 | if (val < sharpsl_pm.machinfo->charge_on_volt) |
b7557de4 RP |
455 | return -1; |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static int sharpsl_ac_check(void) | |
461 | { | |
462 | int temp, i, buff[5]; | |
463 | ||
464 | for (i=0; i<5; i++) { | |
465 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT); | |
466 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN); | |
467 | } | |
468 | ||
469 | temp = get_select_val(buff); | |
470 | dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp); | |
471 | ||
f8703dc8 | 472 | if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) { |
b7557de4 RP |
473 | dev_err(sharpsl_pm.dev, "Error: AC check failed.\n"); |
474 | return -1; | |
475 | } | |
476 | ||
477 | return 0; | |
478 | } | |
479 | ||
480 | #ifdef CONFIG_PM | |
481 | static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state) | |
482 | { | |
483 | sharpsl_pm.flags |= SHARPSL_SUSPENDED; | |
484 | flush_scheduled_work(); | |
485 | ||
486 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
487 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
488 | else | |
489 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; | |
490 | ||
491 | return 0; | |
492 | } | |
493 | ||
494 | static int sharpsl_pm_resume(struct platform_device *pdev) | |
495 | { | |
496 | /* Clear the reset source indicators as they break the bootloader upon reboot */ | |
497 | RCSR = 0x0f; | |
498 | sharpsl_average_clear(); | |
499 | sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED; | |
500 | sharpsl_pm.flags &= ~SHARPSL_SUSPENDED; | |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
505 | static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) | |
506 | { | |
507 | dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR); | |
508 | ||
509 | dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG); | |
510 | /* not charging and AC-IN! */ | |
511 | ||
512 | if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) { | |
513 | dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n"); | |
514 | sharpsl_pm.charge_mode = CHRG_OFF; | |
515 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; | |
516 | sharpsl_off_charge_battery(); | |
517 | } | |
518 | ||
519 | sharpsl_pm.machinfo->presuspend(); | |
520 | ||
521 | PEDR = 0xffffffff; /* clear it */ | |
522 | ||
523 | sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE; | |
524 | if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) { | |
525 | RTSR &= RTSR_ALE; | |
526 | RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND; | |
527 | dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR); | |
528 | sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE; | |
529 | } else if (alarm_enable) { | |
530 | RTSR &= RTSR_ALE; | |
531 | RTAR = alarm_time; | |
532 | dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR); | |
533 | } else { | |
534 | dev_dbg(sharpsl_pm.dev, "No alarms set.\n"); | |
535 | } | |
536 | ||
537 | pxa_pm_enter(state); | |
538 | ||
539 | sharpsl_pm.machinfo->postsuspend(); | |
540 | ||
541 | dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR); | |
542 | } | |
543 | ||
544 | static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) | |
545 | { | |
546 | if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) ) | |
547 | { | |
548 | if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) { | |
549 | dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n"); | |
550 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
551 | return 1; | |
552 | } | |
553 | if(sharpsl_off_charge_battery()) { | |
554 | dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n"); | |
555 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
556 | return 1; | |
557 | } | |
558 | dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n"); | |
559 | } | |
560 | ||
561 | if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || (sharpsl_fatal_check() < 0) ) | |
562 | { | |
563 | dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n"); | |
564 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
565 | return 1; | |
566 | } | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
571 | static int corgi_pxa_pm_enter(suspend_state_t state) | |
572 | { | |
573 | unsigned long alarm_time = RTAR; | |
574 | unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0); | |
575 | ||
576 | dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n"); | |
577 | ||
578 | corgi_goto_sleep(alarm_time, alarm_status, state); | |
579 | ||
580 | while (corgi_enter_suspend(alarm_time,alarm_status,state)) | |
581 | {} | |
582 | ||
576b3ef2 DO |
583 | if (sharpsl_pm.machinfo->earlyresume) |
584 | sharpsl_pm.machinfo->earlyresume(); | |
585 | ||
b7557de4 RP |
586 | dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n"); |
587 | ||
588 | return 0; | |
589 | } | |
590 | #endif | |
591 | ||
592 | ||
593 | /* | |
594 | * Check for fatal battery errors | |
595 | * Fatal returns -1 | |
596 | */ | |
597 | static int sharpsl_fatal_check(void) | |
598 | { | |
599 | int buff[5], temp, i, acin; | |
600 | ||
601 | dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n"); | |
602 | ||
603 | /* Check AC-Adapter */ | |
604 | acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); | |
605 | ||
606 | if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { | |
607 | sharpsl_pm.machinfo->charge(0); | |
608 | udelay(100); | |
609 | sharpsl_pm.machinfo->discharge(1); /* enable discharge */ | |
610 | mdelay(SHARPSL_WAIT_DISCHARGE_ON); | |
611 | } | |
612 | ||
613 | if (sharpsl_pm.machinfo->discharge1) | |
614 | sharpsl_pm.machinfo->discharge1(1); | |
615 | ||
616 | /* Check battery : check inserting battery ? */ | |
617 | for (i=0; i<5; i++) { | |
618 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); | |
619 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); | |
620 | } | |
621 | ||
622 | if (sharpsl_pm.machinfo->discharge1) | |
623 | sharpsl_pm.machinfo->discharge1(0); | |
624 | ||
625 | if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { | |
626 | udelay(100); | |
627 | sharpsl_pm.machinfo->charge(1); | |
628 | sharpsl_pm.machinfo->discharge(0); | |
629 | } | |
630 | ||
631 | temp = get_select_val(buff); | |
aceb6f0b | 632 | 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)); |
b7557de4 | 633 | |
f8703dc8 RP |
634 | if ((acin && (temp < sharpsl_pm.machinfo->fatal_acin_volt)) || |
635 | (!acin && (temp < sharpsl_pm.machinfo->fatal_noacin_volt))) | |
b7557de4 RP |
636 | return -1; |
637 | return 0; | |
638 | } | |
639 | ||
640 | static int sharpsl_off_charge_error(void) | |
641 | { | |
6cbdc8c5 | 642 | dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n"); |
b7557de4 RP |
643 | sharpsl_pm.machinfo->charge(0); |
644 | sharpsl_pm_led(SHARPSL_LED_ERROR); | |
645 | sharpsl_pm.charge_mode = CHRG_ERROR; | |
646 | return 1; | |
647 | } | |
648 | ||
649 | /* | |
650 | * Charging Control while suspended | |
651 | * Return 1 - go straight to sleep | |
652 | * Return 0 - sleep or wakeup depending on other factors | |
653 | */ | |
654 | static int sharpsl_off_charge_battery(void) | |
655 | { | |
656 | int time; | |
657 | ||
658 | dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode); | |
659 | ||
660 | if (sharpsl_pm.charge_mode == CHRG_OFF) { | |
661 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n"); | |
662 | ||
663 | /* AC Check */ | |
664 | if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0)) | |
665 | return sharpsl_off_charge_error(); | |
666 | ||
667 | /* Start Charging */ | |
668 | sharpsl_pm_led(SHARPSL_LED_ON); | |
669 | sharpsl_pm.machinfo->charge(0); | |
670 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
671 | sharpsl_pm.machinfo->charge(1); | |
672 | ||
673 | sharpsl_pm.charge_mode = CHRG_ON; | |
674 | sharpsl_pm.full_count = 0; | |
675 | ||
676 | return 1; | |
677 | } else if (sharpsl_pm.charge_mode != CHRG_ON) { | |
678 | return 1; | |
679 | } | |
680 | ||
681 | if (sharpsl_pm.full_count == 0) { | |
682 | int time; | |
683 | ||
684 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n"); | |
685 | ||
686 | if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0)) | |
687 | return sharpsl_off_charge_error(); | |
688 | ||
689 | sharpsl_pm.machinfo->charge(0); | |
690 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
691 | sharpsl_pm.machinfo->charge(1); | |
692 | sharpsl_pm.charge_mode = CHRG_ON; | |
693 | ||
694 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); | |
695 | ||
696 | time = RCNR; | |
697 | while(1) { | |
6cbdc8c5 | 698 | /* Check if any wakeup event had occurred */ |
b7557de4 RP |
699 | if (sharpsl_pm.machinfo->charger_wakeup() != 0) |
700 | return 0; | |
701 | /* Check for timeout */ | |
702 | if ((RCNR - time) > SHARPSL_WAIT_CO_TIME) | |
703 | return 1; | |
704 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { | |
6cbdc8c5 | 705 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n"); |
b7557de4 RP |
706 | sharpsl_pm.full_count++; |
707 | sharpsl_pm.machinfo->charge(0); | |
708 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
709 | sharpsl_pm.machinfo->charge(1); | |
710 | return 1; | |
711 | } | |
712 | } | |
713 | } | |
714 | ||
715 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n"); | |
716 | ||
717 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); | |
718 | ||
719 | time = RCNR; | |
720 | while(1) { | |
6cbdc8c5 | 721 | /* Check if any wakeup event had occurred */ |
b7557de4 RP |
722 | if (sharpsl_pm.machinfo->charger_wakeup() != 0) |
723 | return 0; | |
724 | /* Check for timeout */ | |
725 | if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) { | |
726 | if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) { | |
727 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n"); | |
728 | sharpsl_pm.full_count = 0; | |
729 | } | |
730 | sharpsl_pm.full_count++; | |
731 | return 1; | |
732 | } | |
733 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { | |
734 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n"); | |
735 | sharpsl_pm_led(SHARPSL_LED_OFF); | |
736 | sharpsl_pm.machinfo->charge(0); | |
737 | sharpsl_pm.charge_mode = CHRG_DONE; | |
738 | return 1; | |
739 | } | |
740 | } | |
741 | } | |
742 | ||
743 | ||
744 | static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf) | |
745 | { | |
746 | return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent); | |
747 | } | |
748 | ||
749 | static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf) | |
750 | { | |
751 | return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage); | |
752 | } | |
753 | ||
754 | static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL); | |
755 | static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL); | |
756 | ||
757 | extern void (*apm_get_power_status)(struct apm_power_info *); | |
758 | ||
759 | static void sharpsl_apm_get_power_status(struct apm_power_info *info) | |
760 | { | |
761 | info->ac_line_status = sharpsl_pm.battstat.ac_status; | |
762 | ||
763 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
764 | info->battery_status = APM_BATTERY_STATUS_CHARGING; | |
765 | else | |
766 | info->battery_status = sharpsl_pm.battstat.mainbat_status; | |
767 | ||
768 | info->battery_flag = (1 << info->battery_status); | |
769 | info->battery_life = sharpsl_pm.battstat.mainbat_percent; | |
770 | } | |
771 | ||
26398a70 | 772 | static struct platform_suspend_ops sharpsl_pm_ops = { |
b7557de4 | 773 | .enter = corgi_pxa_pm_enter, |
26398a70 | 774 | .valid = suspend_valid_only_mem, |
b7557de4 RP |
775 | }; |
776 | ||
777 | static int __init sharpsl_pm_probe(struct platform_device *pdev) | |
778 | { | |
aceb6f0b RP |
779 | int ret; |
780 | ||
b7557de4 RP |
781 | if (!pdev->dev.platform_data) |
782 | return -EINVAL; | |
783 | ||
784 | sharpsl_pm.dev = &pdev->dev; | |
785 | sharpsl_pm.machinfo = pdev->dev.platform_data; | |
786 | sharpsl_pm.charge_mode = CHRG_OFF; | |
787 | sharpsl_pm.flags = 0; | |
788 | ||
789 | init_timer(&sharpsl_pm.ac_timer); | |
790 | sharpsl_pm.ac_timer.function = sharpsl_ac_timer; | |
791 | ||
792 | init_timer(&sharpsl_pm.chrg_full_timer); | |
793 | sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer; | |
794 | ||
181bf8aa RP |
795 | led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger); |
796 | ||
b7557de4 RP |
797 | sharpsl_pm.machinfo->init(); |
798 | ||
aceb6f0b RP |
799 | ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage); |
800 | ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage); | |
801 | if (ret != 0) | |
802 | dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret); | |
b7557de4 RP |
803 | |
804 | apm_get_power_status = sharpsl_apm_get_power_status; | |
805 | ||
26398a70 | 806 | suspend_set_ops(&sharpsl_pm_ops); |
b7557de4 RP |
807 | |
808 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); | |
809 | ||
810 | return 0; | |
811 | } | |
812 | ||
813 | static int sharpsl_pm_remove(struct platform_device *pdev) | |
814 | { | |
26398a70 | 815 | suspend_set_ops(NULL); |
b7557de4 RP |
816 | |
817 | device_remove_file(&pdev->dev, &dev_attr_battery_percentage); | |
818 | device_remove_file(&pdev->dev, &dev_attr_battery_voltage); | |
819 | ||
181bf8aa RP |
820 | led_trigger_unregister_simple(sharpsl_charge_led_trigger); |
821 | ||
b7557de4 RP |
822 | sharpsl_pm.machinfo->exit(); |
823 | ||
824 | del_timer_sync(&sharpsl_pm.chrg_full_timer); | |
825 | del_timer_sync(&sharpsl_pm.ac_timer); | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | static struct platform_driver sharpsl_pm_driver = { | |
831 | .probe = sharpsl_pm_probe, | |
832 | .remove = sharpsl_pm_remove, | |
833 | .suspend = sharpsl_pm_suspend, | |
834 | .resume = sharpsl_pm_resume, | |
835 | .driver = { | |
836 | .name = "sharpsl-pm", | |
837 | }, | |
838 | }; | |
839 | ||
840 | static int __devinit sharpsl_pm_init(void) | |
841 | { | |
842 | return platform_driver_register(&sharpsl_pm_driver); | |
843 | } | |
844 | ||
845 | static void sharpsl_pm_exit(void) | |
846 | { | |
847 | platform_driver_unregister(&sharpsl_pm_driver); | |
848 | } | |
849 | ||
850 | late_initcall(sharpsl_pm_init); | |
851 | module_exit(sharpsl_pm_exit); |