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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
078abcf9 RP |
2 | /* |
3 | * Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00 | |
4 | * series of PDAs | |
5 | * | |
6 | * Copyright (c) 2004-2005 Richard Purdie | |
7 | * | |
8 | * Based on code written by Sharp for 2.4 kernels | |
078abcf9 RP |
9 | */ |
10 | ||
11 | #undef DEBUG | |
12 | ||
13 | #include <linux/module.h> | |
078abcf9 | 14 | #include <linux/kernel.h> |
078abcf9 | 15 | #include <linux/interrupt.h> |
c5e1ae97 | 16 | #include <linux/platform_device.h> |
61fde514 | 17 | #include <linux/apm-emulation.h> |
78731d33 | 18 | #include <linux/timer.h> |
78731d33 DES |
19 | #include <linux/delay.h> |
20 | #include <linux/leds.h> | |
21 | #include <linux/suspend.h> | |
d5af2778 | 22 | #include <linux/gpio.h> |
23019a73 | 23 | #include <linux/io.h> |
078abcf9 | 24 | |
078abcf9 | 25 | #include <asm/mach-types.h> |
4c25c5d2 | 26 | #include "pm.h" |
e6acc406 | 27 | #include "pxa2xx-regs.h" |
4c25c5d2 AB |
28 | #include "regs-rtc.h" |
29 | #include "sharpsl_pm.h" | |
78731d33 DES |
30 | |
31 | /* | |
32 | * Constants | |
33 | */ | |
34 | #define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */ | |
35 | #define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */ | |
36 | #define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */ | |
37 | #define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */ | |
38 | ||
39 | #define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */ | |
40 | #define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */ | |
41 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */ | |
42 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */ | |
43 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */ | |
44 | #define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */ | |
45 | #define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */ | |
46 | #define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */ | |
47 | ||
48 | /* | |
49 | * Prototypes | |
50 | */ | |
51 | #ifdef CONFIG_PM | |
52 | static int sharpsl_off_charge_battery(void); | |
53 | static int sharpsl_check_battery_voltage(void); | |
78731d33 DES |
54 | #endif |
55 | static int sharpsl_check_battery_temp(void); | |
56 | static int sharpsl_ac_check(void); | |
57 | static int sharpsl_average_value(int ad); | |
58 | static void sharpsl_average_clear(void); | |
59 | static void sharpsl_charge_toggle(struct work_struct *private_); | |
60 | static void sharpsl_battery_thread(struct work_struct *private_); | |
61 | ||
62 | ||
63 | /* | |
64 | * Variables | |
65 | */ | |
66 | struct sharpsl_pm_status sharpsl_pm; | |
d48898a3 DES |
67 | static DECLARE_DELAYED_WORK(toggle_charger, sharpsl_charge_toggle); |
68 | static DECLARE_DELAYED_WORK(sharpsl_bat, sharpsl_battery_thread); | |
78731d33 DES |
69 | DEFINE_LED_TRIGGER(sharpsl_charge_led_trigger); |
70 | ||
71 | ||
078abcf9 | 72 | |
0ba01ebc | 73 | struct battery_thresh sharpsl_battery_levels_acin[] = { |
078abcf9 RP |
74 | { 213, 100}, |
75 | { 212, 98}, | |
76 | { 211, 95}, | |
77 | { 210, 93}, | |
78 | { 209, 90}, | |
79 | { 208, 88}, | |
80 | { 207, 85}, | |
81 | { 206, 83}, | |
82 | { 205, 80}, | |
83 | { 204, 78}, | |
84 | { 203, 75}, | |
85 | { 202, 73}, | |
86 | { 201, 70}, | |
87 | { 200, 68}, | |
88 | { 199, 65}, | |
89 | { 198, 63}, | |
90 | { 197, 60}, | |
91 | { 196, 58}, | |
92 | { 195, 55}, | |
93 | { 194, 53}, | |
94 | { 193, 50}, | |
95 | { 192, 48}, | |
96 | { 192, 45}, | |
97 | { 191, 43}, | |
98 | { 191, 40}, | |
99 | { 190, 38}, | |
100 | { 190, 35}, | |
101 | { 189, 33}, | |
102 | { 188, 30}, | |
103 | { 187, 28}, | |
104 | { 186, 25}, | |
105 | { 185, 23}, | |
106 | { 184, 20}, | |
107 | { 183, 18}, | |
108 | { 182, 15}, | |
109 | { 181, 13}, | |
110 | { 180, 10}, | |
111 | { 179, 8}, | |
112 | { 178, 5}, | |
113 | { 0, 0}, | |
114 | }; | |
115 | ||
0ba01ebc | 116 | struct battery_thresh sharpsl_battery_levels_noac[] = { |
078abcf9 RP |
117 | { 213, 100}, |
118 | { 212, 98}, | |
119 | { 211, 95}, | |
120 | { 210, 93}, | |
121 | { 209, 90}, | |
122 | { 208, 88}, | |
123 | { 207, 85}, | |
124 | { 206, 83}, | |
125 | { 205, 80}, | |
126 | { 204, 78}, | |
127 | { 203, 75}, | |
128 | { 202, 73}, | |
129 | { 201, 70}, | |
130 | { 200, 68}, | |
131 | { 199, 65}, | |
132 | { 198, 63}, | |
133 | { 197, 60}, | |
134 | { 196, 58}, | |
135 | { 195, 55}, | |
136 | { 194, 53}, | |
137 | { 193, 50}, | |
138 | { 192, 48}, | |
139 | { 191, 45}, | |
140 | { 190, 43}, | |
141 | { 189, 40}, | |
142 | { 188, 38}, | |
143 | { 187, 35}, | |
144 | { 186, 33}, | |
145 | { 185, 30}, | |
146 | { 184, 28}, | |
147 | { 183, 25}, | |
148 | { 182, 23}, | |
149 | { 181, 20}, | |
150 | { 180, 18}, | |
151 | { 179, 15}, | |
152 | { 178, 13}, | |
153 | { 177, 10}, | |
154 | { 176, 8}, | |
155 | { 175, 5}, | |
156 | { 0, 0}, | |
157 | }; | |
158 | ||
25af3b0f | 159 | /* MAX1111 Commands */ |
b64b0b76 PM |
160 | #define MAXCTRL_PD0 (1u << 0) |
161 | #define MAXCTRL_PD1 (1u << 1) | |
162 | #define MAXCTRL_SGL (1u << 2) | |
163 | #define MAXCTRL_UNI (1u << 3) | |
25af3b0f | 164 | #define MAXCTRL_SEL_SH 4 |
b64b0b76 | 165 | #define MAXCTRL_STR (1u << 7) |
25af3b0f | 166 | |
438d7dc2 | 167 | extern int max1111_read_channel(int); |
078abcf9 RP |
168 | /* |
169 | * Read MAX1111 ADC | |
170 | */ | |
b7557de4 | 171 | int sharpsl_pm_pxa_read_max1111(int channel) |
078abcf9 | 172 | { |
f16177c2 EM |
173 | /* max1111 accepts channels from 0-3, however, |
174 | * it is encoded from 0-7 here in the code. | |
175 | */ | |
176 | return max1111_read_channel(channel >> 1); | |
078abcf9 RP |
177 | } |
178 | ||
78731d33 DES |
179 | static int get_percentage(int voltage) |
180 | { | |
181 | int i = sharpsl_pm.machinfo->bat_levels - 1; | |
182 | int bl_status = sharpsl_pm.machinfo->backlight_get_status ? sharpsl_pm.machinfo->backlight_get_status() : 0; | |
183 | struct battery_thresh *thresh; | |
184 | ||
185 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
186 | thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_acin_bl : sharpsl_pm.machinfo->bat_levels_acin; | |
187 | else | |
188 | thresh = bl_status ? sharpsl_pm.machinfo->bat_levels_noac_bl : sharpsl_pm.machinfo->bat_levels_noac; | |
189 | ||
190 | while (i > 0 && (voltage > thresh[i].voltage)) | |
191 | i--; | |
192 | ||
193 | return thresh[i].percentage; | |
194 | } | |
195 | ||
196 | static int get_apm_status(int voltage) | |
197 | { | |
198 | int low_thresh, high_thresh; | |
199 | ||
200 | if (sharpsl_pm.charge_mode == CHRG_ON) { | |
201 | high_thresh = sharpsl_pm.machinfo->status_high_acin; | |
202 | low_thresh = sharpsl_pm.machinfo->status_low_acin; | |
203 | } else { | |
204 | high_thresh = sharpsl_pm.machinfo->status_high_noac; | |
205 | low_thresh = sharpsl_pm.machinfo->status_low_noac; | |
206 | } | |
207 | ||
208 | if (voltage >= high_thresh) | |
209 | return APM_BATTERY_STATUS_HIGH; | |
210 | if (voltage >= low_thresh) | |
211 | return APM_BATTERY_STATUS_LOW; | |
212 | return APM_BATTERY_STATUS_CRITICAL; | |
213 | } | |
214 | ||
215 | void sharpsl_battery_kick(void) | |
216 | { | |
217 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125)); | |
218 | } | |
78731d33 DES |
219 | |
220 | static void sharpsl_battery_thread(struct work_struct *private_) | |
221 | { | |
b64b0b76 | 222 | int voltage, percent, apm_status, i; |
78731d33 DES |
223 | |
224 | if (!sharpsl_pm.machinfo) | |
225 | return; | |
226 | ||
227 | sharpsl_pm.battstat.ac_status = (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN) ? APM_AC_ONLINE : APM_AC_OFFLINE); | |
228 | ||
229 | /* Corgi cannot confirm when battery fully charged so periodically kick! */ | |
230 | if (!sharpsl_pm.machinfo->batfull_irq && (sharpsl_pm.charge_mode == CHRG_ON) | |
231 | && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL)) | |
232 | schedule_delayed_work(&toggle_charger, 0); | |
233 | ||
b64b0b76 | 234 | for (i = 0; i < 5; i++) { |
78731d33 | 235 | voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); |
b64b0b76 | 236 | if (voltage > 0) |
78731d33 | 237 | break; |
b64b0b76 PM |
238 | } |
239 | if (voltage <= 0) { | |
240 | voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage; | |
241 | dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n"); | |
78731d33 DES |
242 | } |
243 | ||
244 | voltage = sharpsl_average_value(voltage); | |
245 | apm_status = get_apm_status(voltage); | |
246 | percent = get_percentage(voltage); | |
247 | ||
248 | /* At low battery voltages, the voltage has a tendency to start | |
b64b0b76 PM |
249 | creeping back up so we try to avoid this here */ |
250 | if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) | |
251 | || (apm_status == APM_BATTERY_STATUS_HIGH) | |
252 | || percent <= sharpsl_pm.battstat.mainbat_percent) { | |
78731d33 DES |
253 | sharpsl_pm.battstat.mainbat_voltage = voltage; |
254 | sharpsl_pm.battstat.mainbat_status = apm_status; | |
255 | sharpsl_pm.battstat.mainbat_percent = percent; | |
256 | } | |
257 | ||
258 | dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage, | |
259 | sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies); | |
260 | ||
78731d33 DES |
261 | /* Suspend if critical battery level */ |
262 | if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) | |
b64b0b76 PM |
263 | && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL) |
264 | && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) { | |
78731d33 DES |
265 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; |
266 | dev_err(sharpsl_pm.dev, "Fatal Off\n"); | |
267 | apm_queue_event(APM_CRITICAL_SUSPEND); | |
268 | } | |
269 | ||
270 | schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME); | |
271 | } | |
272 | ||
273 | void sharpsl_pm_led(int val) | |
274 | { | |
275 | if (val == SHARPSL_LED_ERROR) { | |
276 | dev_err(sharpsl_pm.dev, "Charging Error!\n"); | |
277 | } else if (val == SHARPSL_LED_ON) { | |
278 | dev_dbg(sharpsl_pm.dev, "Charge LED On\n"); | |
279 | led_trigger_event(sharpsl_charge_led_trigger, LED_FULL); | |
280 | } else { | |
281 | dev_dbg(sharpsl_pm.dev, "Charge LED Off\n"); | |
282 | led_trigger_event(sharpsl_charge_led_trigger, LED_OFF); | |
283 | } | |
284 | } | |
285 | ||
286 | static void sharpsl_charge_on(void) | |
287 | { | |
288 | dev_dbg(sharpsl_pm.dev, "Turning Charger On\n"); | |
289 | ||
290 | sharpsl_pm.full_count = 0; | |
291 | sharpsl_pm.charge_mode = CHRG_ON; | |
292 | schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250)); | |
293 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500)); | |
294 | } | |
295 | ||
296 | static void sharpsl_charge_off(void) | |
297 | { | |
298 | dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n"); | |
299 | ||
300 | sharpsl_pm.machinfo->charge(0); | |
301 | sharpsl_pm_led(SHARPSL_LED_OFF); | |
302 | sharpsl_pm.charge_mode = CHRG_OFF; | |
303 | ||
304 | schedule_delayed_work(&sharpsl_bat, 0); | |
305 | } | |
306 | ||
307 | static void sharpsl_charge_error(void) | |
308 | { | |
309 | sharpsl_pm_led(SHARPSL_LED_ERROR); | |
310 | sharpsl_pm.machinfo->charge(0); | |
311 | sharpsl_pm.charge_mode = CHRG_ERROR; | |
312 | } | |
313 | ||
314 | static void sharpsl_charge_toggle(struct work_struct *private_) | |
315 | { | |
b64b0b76 | 316 | dev_dbg(sharpsl_pm.dev, "Toggling Charger at time: %lx\n", jiffies); |
78731d33 DES |
317 | |
318 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { | |
319 | sharpsl_charge_off(); | |
320 | return; | |
321 | } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) { | |
322 | sharpsl_charge_error(); | |
323 | return; | |
324 | } | |
325 | ||
326 | sharpsl_pm_led(SHARPSL_LED_ON); | |
327 | sharpsl_pm.machinfo->charge(0); | |
328 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
329 | sharpsl_pm.machinfo->charge(1); | |
330 | ||
331 | sharpsl_pm.charge_start_time = jiffies; | |
332 | } | |
333 | ||
96d13082 | 334 | static void sharpsl_ac_timer(struct timer_list *unused) |
78731d33 DES |
335 | { |
336 | int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN); | |
337 | ||
b64b0b76 | 338 | dev_dbg(sharpsl_pm.dev, "AC Status: %d\n", acin); |
78731d33 DES |
339 | |
340 | sharpsl_average_clear(); | |
341 | if (acin && (sharpsl_pm.charge_mode != CHRG_ON)) | |
342 | sharpsl_charge_on(); | |
343 | else if (sharpsl_pm.charge_mode == CHRG_ON) | |
344 | sharpsl_charge_off(); | |
345 | ||
346 | schedule_delayed_work(&sharpsl_bat, 0); | |
347 | } | |
348 | ||
349 | ||
d48898a3 | 350 | static irqreturn_t sharpsl_ac_isr(int irq, void *dev_id) |
78731d33 DES |
351 | { |
352 | /* Delay the event slightly to debounce */ | |
353 | /* Must be a smaller delay than the chrg_full_isr below */ | |
354 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); | |
355 | ||
356 | return IRQ_HANDLED; | |
357 | } | |
358 | ||
96d13082 | 359 | static void sharpsl_chrg_full_timer(struct timer_list *unused) |
78731d33 DES |
360 | { |
361 | dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies); | |
362 | ||
363 | sharpsl_pm.full_count++; | |
364 | ||
365 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) { | |
366 | dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n"); | |
367 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
368 | sharpsl_charge_off(); | |
369 | } else if (sharpsl_pm.full_count < 2) { | |
370 | dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n"); | |
371 | schedule_delayed_work(&toggle_charger, 0); | |
372 | } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) { | |
373 | dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n"); | |
374 | schedule_delayed_work(&toggle_charger, 0); | |
375 | } else { | |
376 | sharpsl_charge_off(); | |
377 | sharpsl_pm.charge_mode = CHRG_DONE; | |
378 | dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n"); | |
379 | } | |
380 | } | |
381 | ||
382 | /* Charging Finished Interrupt (Not present on Corgi) */ | |
383 | /* Can trigger at the same time as an AC status change so | |
384 | delay until after that has been processed */ | |
d48898a3 | 385 | static irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id) |
78731d33 DES |
386 | { |
387 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) | |
388 | return IRQ_HANDLED; | |
389 | ||
390 | /* delay until after any ac interrupt */ | |
391 | mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500)); | |
392 | ||
393 | return IRQ_HANDLED; | |
394 | } | |
395 | ||
d48898a3 | 396 | static irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id) |
78731d33 DES |
397 | { |
398 | int is_fatal = 0; | |
399 | ||
400 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) { | |
401 | dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n"); | |
402 | is_fatal = 1; | |
403 | } | |
404 | ||
405 | if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL)) { | |
406 | dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n"); | |
407 | is_fatal = 1; | |
408 | } | |
409 | ||
410 | if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) { | |
411 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; | |
412 | apm_queue_event(APM_CRITICAL_SUSPEND); | |
413 | } | |
414 | ||
415 | return IRQ_HANDLED; | |
416 | } | |
417 | ||
418 | /* | |
419 | * Maintain an average of the last 10 readings | |
420 | */ | |
421 | #define SHARPSL_CNV_VALUE_NUM 10 | |
422 | static int sharpsl_ad_index; | |
423 | ||
424 | static void sharpsl_average_clear(void) | |
425 | { | |
426 | sharpsl_ad_index = 0; | |
427 | } | |
428 | ||
429 | static int sharpsl_average_value(int ad) | |
430 | { | |
431 | int i, ad_val = 0; | |
432 | static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1]; | |
433 | ||
434 | if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) { | |
435 | sharpsl_ad_index = 0; | |
436 | return ad; | |
437 | } | |
438 | ||
439 | sharpsl_ad[sharpsl_ad_index] = ad; | |
440 | sharpsl_ad_index++; | |
441 | if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) { | |
b64b0b76 | 442 | for (i = 0; i < (SHARPSL_CNV_VALUE_NUM-1); i++) |
78731d33 DES |
443 | sharpsl_ad[i] = sharpsl_ad[i+1]; |
444 | sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1; | |
445 | } | |
b64b0b76 | 446 | for (i = 0; i < sharpsl_ad_index; i++) |
78731d33 DES |
447 | ad_val += sharpsl_ad[i]; |
448 | ||
b64b0b76 | 449 | return ad_val / sharpsl_ad_index; |
78731d33 DES |
450 | } |
451 | ||
452 | /* | |
453 | * Take an array of 5 integers, remove the maximum and minimum values | |
454 | * and return the average. | |
455 | */ | |
456 | static int get_select_val(int *val) | |
457 | { | |
458 | int i, j, k, temp, sum = 0; | |
459 | ||
460 | /* Find MAX val */ | |
461 | temp = val[0]; | |
b64b0b76 PM |
462 | j = 0; |
463 | for (i = 1; i < 5; i++) { | |
78731d33 DES |
464 | if (temp < val[i]) { |
465 | temp = val[i]; | |
466 | j = i; | |
467 | } | |
468 | } | |
469 | ||
470 | /* Find MIN val */ | |
471 | temp = val[4]; | |
b64b0b76 PM |
472 | k = 4; |
473 | for (i = 3; i >= 0; i--) { | |
78731d33 DES |
474 | if (temp > val[i]) { |
475 | temp = val[i]; | |
476 | k = i; | |
477 | } | |
478 | } | |
479 | ||
b64b0b76 PM |
480 | for (i = 0; i < 5; i++) |
481 | if (i != j && i != k) | |
78731d33 DES |
482 | sum += val[i]; |
483 | ||
484 | 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]); | |
485 | ||
b64b0b76 | 486 | return sum/3; |
78731d33 DES |
487 | } |
488 | ||
489 | static int sharpsl_check_battery_temp(void) | |
490 | { | |
491 | int val, i, buff[5]; | |
492 | ||
493 | /* Check battery temperature */ | |
b64b0b76 | 494 | for (i = 0; i < 5; i++) { |
78731d33 DES |
495 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); |
496 | sharpsl_pm.machinfo->measure_temp(1); | |
497 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); | |
498 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_TEMP); | |
499 | sharpsl_pm.machinfo->measure_temp(0); | |
500 | } | |
501 | ||
502 | val = get_select_val(buff); | |
503 | ||
504 | dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val); | |
505 | if (val > sharpsl_pm.machinfo->charge_on_temp) { | |
506 | printk(KERN_WARNING "Not charging: temperature out of limits.\n"); | |
507 | return -1; | |
508 | } | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | #ifdef CONFIG_PM | |
514 | static int sharpsl_check_battery_voltage(void) | |
515 | { | |
516 | int val, i, buff[5]; | |
517 | ||
518 | /* disable charge, enable discharge */ | |
519 | sharpsl_pm.machinfo->charge(0); | |
520 | sharpsl_pm.machinfo->discharge(1); | |
521 | mdelay(SHARPSL_WAIT_DISCHARGE_ON); | |
522 | ||
523 | if (sharpsl_pm.machinfo->discharge1) | |
524 | sharpsl_pm.machinfo->discharge1(1); | |
525 | ||
526 | /* Check battery voltage */ | |
b64b0b76 | 527 | for (i = 0; i < 5; i++) { |
78731d33 DES |
528 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT); |
529 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); | |
530 | } | |
531 | ||
532 | if (sharpsl_pm.machinfo->discharge1) | |
533 | sharpsl_pm.machinfo->discharge1(0); | |
534 | ||
535 | sharpsl_pm.machinfo->discharge(0); | |
536 | ||
537 | val = get_select_val(buff); | |
538 | dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val); | |
539 | ||
540 | if (val < sharpsl_pm.machinfo->charge_on_volt) | |
541 | return -1; | |
542 | ||
543 | return 0; | |
544 | } | |
545 | #endif | |
546 | ||
547 | static int sharpsl_ac_check(void) | |
548 | { | |
549 | int temp, i, buff[5]; | |
550 | ||
b64b0b76 | 551 | for (i = 0; i < 5; i++) { |
78731d33 DES |
552 | buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT); |
553 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN); | |
554 | } | |
555 | ||
556 | temp = get_select_val(buff); | |
b64b0b76 | 557 | dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n", temp); |
78731d33 DES |
558 | |
559 | if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) { | |
b64b0b76 | 560 | dev_err(sharpsl_pm.dev, "Error: AC check failed: voltage %d.\n", temp); |
78731d33 DES |
561 | return -1; |
562 | } | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | #ifdef CONFIG_PM | |
568 | static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state) | |
569 | { | |
570 | sharpsl_pm.flags |= SHARPSL_SUSPENDED; | |
43829731 TH |
571 | flush_delayed_work(&toggle_charger); |
572 | flush_delayed_work(&sharpsl_bat); | |
78731d33 DES |
573 | |
574 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
575 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
576 | else | |
577 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | static int sharpsl_pm_resume(struct platform_device *pdev) | |
583 | { | |
584 | /* Clear the reset source indicators as they break the bootloader upon reboot */ | |
585 | RCSR = 0x0f; | |
586 | sharpsl_average_clear(); | |
587 | sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED; | |
588 | sharpsl_pm.flags &= ~SHARPSL_SUSPENDED; | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
593 | static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) | |
594 | { | |
b64b0b76 | 595 | dev_dbg(sharpsl_pm.dev, "Time is: %08x\n", RCNR); |
78731d33 | 596 | |
b64b0b76 | 597 | dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n", sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG); |
78731d33 DES |
598 | /* not charging and AC-IN! */ |
599 | ||
600 | if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) { | |
601 | dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n"); | |
602 | sharpsl_pm.charge_mode = CHRG_OFF; | |
603 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; | |
604 | sharpsl_off_charge_battery(); | |
605 | } | |
606 | ||
607 | sharpsl_pm.machinfo->presuspend(); | |
608 | ||
609 | PEDR = 0xffffffff; /* clear it */ | |
610 | ||
611 | sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE; | |
612 | if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) { | |
613 | RTSR &= RTSR_ALE; | |
614 | RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND; | |
b64b0b76 | 615 | dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n", RTAR); |
78731d33 DES |
616 | sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE; |
617 | } else if (alarm_enable) { | |
618 | RTSR &= RTSR_ALE; | |
619 | RTAR = alarm_time; | |
b64b0b76 | 620 | dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n", RTAR); |
78731d33 DES |
621 | } else { |
622 | dev_dbg(sharpsl_pm.dev, "No alarms set.\n"); | |
623 | } | |
624 | ||
625 | pxa_pm_enter(state); | |
626 | ||
627 | sharpsl_pm.machinfo->postsuspend(); | |
628 | ||
b64b0b76 | 629 | dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n", PEDR); |
78731d33 DES |
630 | } |
631 | ||
632 | static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) | |
633 | { | |
b64b0b76 | 634 | if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable)) { |
78731d33 DES |
635 | if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) { |
636 | dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n"); | |
637 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
638 | return 1; | |
639 | } | |
b64b0b76 | 640 | if (sharpsl_off_charge_battery()) { |
78731d33 DES |
641 | dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n"); |
642 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
643 | return 1; | |
644 | } | |
645 | dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n"); | |
646 | } | |
647 | ||
99f329a2 PM |
648 | if ((!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_LOCK)) || |
649 | (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_FATAL))) { | |
78731d33 DES |
650 | dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n"); |
651 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
652 | return 1; | |
653 | } | |
654 | ||
655 | return 0; | |
656 | } | |
657 | ||
658 | static int corgi_pxa_pm_enter(suspend_state_t state) | |
659 | { | |
660 | unsigned long alarm_time = RTAR; | |
661 | unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0); | |
662 | ||
663 | dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n"); | |
664 | ||
665 | corgi_goto_sleep(alarm_time, alarm_status, state); | |
666 | ||
b64b0b76 | 667 | while (corgi_enter_suspend(alarm_time, alarm_status, state)) |
78731d33 DES |
668 | {} |
669 | ||
670 | if (sharpsl_pm.machinfo->earlyresume) | |
671 | sharpsl_pm.machinfo->earlyresume(); | |
672 | ||
673 | dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n"); | |
674 | ||
675 | return 0; | |
676 | } | |
677 | ||
78731d33 DES |
678 | static int sharpsl_off_charge_error(void) |
679 | { | |
680 | dev_err(sharpsl_pm.dev, "Offline Charger: Error occurred.\n"); | |
681 | sharpsl_pm.machinfo->charge(0); | |
682 | sharpsl_pm_led(SHARPSL_LED_ERROR); | |
683 | sharpsl_pm.charge_mode = CHRG_ERROR; | |
684 | return 1; | |
685 | } | |
686 | ||
687 | /* | |
688 | * Charging Control while suspended | |
689 | * Return 1 - go straight to sleep | |
690 | * Return 0 - sleep or wakeup depending on other factors | |
691 | */ | |
692 | static int sharpsl_off_charge_battery(void) | |
693 | { | |
694 | int time; | |
695 | ||
696 | dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode); | |
697 | ||
698 | if (sharpsl_pm.charge_mode == CHRG_OFF) { | |
699 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n"); | |
700 | ||
701 | /* AC Check */ | |
702 | if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0)) | |
703 | return sharpsl_off_charge_error(); | |
704 | ||
705 | /* Start Charging */ | |
706 | sharpsl_pm_led(SHARPSL_LED_ON); | |
707 | sharpsl_pm.machinfo->charge(0); | |
708 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
709 | sharpsl_pm.machinfo->charge(1); | |
710 | ||
711 | sharpsl_pm.charge_mode = CHRG_ON; | |
712 | sharpsl_pm.full_count = 0; | |
713 | ||
714 | return 1; | |
715 | } else if (sharpsl_pm.charge_mode != CHRG_ON) { | |
716 | return 1; | |
717 | } | |
718 | ||
719 | if (sharpsl_pm.full_count == 0) { | |
720 | int time; | |
721 | ||
722 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n"); | |
723 | ||
724 | if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0)) | |
725 | return sharpsl_off_charge_error(); | |
726 | ||
727 | sharpsl_pm.machinfo->charge(0); | |
728 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
729 | sharpsl_pm.machinfo->charge(1); | |
730 | sharpsl_pm.charge_mode = CHRG_ON; | |
731 | ||
732 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); | |
733 | ||
734 | time = RCNR; | |
b64b0b76 | 735 | while (1) { |
78731d33 | 736 | /* Check if any wakeup event had occurred */ |
ca26475b | 737 | if (sharpsl_pm.machinfo->charger_wakeup()) |
78731d33 DES |
738 | return 0; |
739 | /* Check for timeout */ | |
740 | if ((RCNR - time) > SHARPSL_WAIT_CO_TIME) | |
741 | return 1; | |
742 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { | |
743 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occurred. Retrying to check\n"); | |
744 | sharpsl_pm.full_count++; | |
745 | sharpsl_pm.machinfo->charge(0); | |
746 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
747 | sharpsl_pm.machinfo->charge(1); | |
748 | return 1; | |
749 | } | |
750 | } | |
751 | } | |
752 | ||
753 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n"); | |
754 | ||
755 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); | |
756 | ||
757 | time = RCNR; | |
b64b0b76 | 758 | while (1) { |
78731d33 | 759 | /* Check if any wakeup event had occurred */ |
b64b0b76 | 760 | if (sharpsl_pm.machinfo->charger_wakeup()) |
78731d33 DES |
761 | return 0; |
762 | /* Check for timeout */ | |
763 | if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) { | |
764 | if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) { | |
765 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n"); | |
766 | sharpsl_pm.full_count = 0; | |
767 | } | |
768 | sharpsl_pm.full_count++; | |
769 | return 1; | |
770 | } | |
771 | if (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_CHRGFULL)) { | |
772 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n"); | |
773 | sharpsl_pm_led(SHARPSL_LED_OFF); | |
774 | sharpsl_pm.machinfo->charge(0); | |
775 | sharpsl_pm.charge_mode = CHRG_DONE; | |
776 | return 1; | |
777 | } | |
778 | } | |
779 | } | |
780 | #else | |
781 | #define sharpsl_pm_suspend NULL | |
782 | #define sharpsl_pm_resume NULL | |
783 | #endif | |
784 | ||
785 | static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf) | |
786 | { | |
b64b0b76 | 787 | return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_percent); |
78731d33 DES |
788 | } |
789 | ||
790 | static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf) | |
791 | { | |
b64b0b76 | 792 | return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage); |
78731d33 DES |
793 | } |
794 | ||
c828a892 JP |
795 | static DEVICE_ATTR_RO(battery_percentage); |
796 | static DEVICE_ATTR_RO(battery_voltage); | |
78731d33 DES |
797 | |
798 | extern void (*apm_get_power_status)(struct apm_power_info *); | |
799 | ||
800 | static void sharpsl_apm_get_power_status(struct apm_power_info *info) | |
801 | { | |
802 | info->ac_line_status = sharpsl_pm.battstat.ac_status; | |
803 | ||
804 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
805 | info->battery_status = APM_BATTERY_STATUS_CHARGING; | |
806 | else | |
807 | info->battery_status = sharpsl_pm.battstat.mainbat_status; | |
808 | ||
809 | info->battery_flag = (1 << info->battery_status); | |
810 | info->battery_life = sharpsl_pm.battstat.mainbat_percent; | |
811 | } | |
812 | ||
813 | #ifdef CONFIG_PM | |
2f55ac07 | 814 | static const struct platform_suspend_ops sharpsl_pm_ops = { |
51cdd928 PM |
815 | .prepare = pxa_pm_prepare, |
816 | .finish = pxa_pm_finish, | |
78731d33 DES |
817 | .enter = corgi_pxa_pm_enter, |
818 | .valid = suspend_valid_only_mem, | |
819 | }; | |
820 | #endif | |
821 | ||
351a102d | 822 | static int sharpsl_pm_probe(struct platform_device *pdev) |
78731d33 | 823 | { |
74595e17 | 824 | int ret, irq; |
78731d33 DES |
825 | |
826 | if (!pdev->dev.platform_data) | |
827 | return -EINVAL; | |
828 | ||
829 | sharpsl_pm.dev = &pdev->dev; | |
830 | sharpsl_pm.machinfo = pdev->dev.platform_data; | |
831 | sharpsl_pm.charge_mode = CHRG_OFF; | |
832 | sharpsl_pm.flags = 0; | |
833 | ||
96d13082 | 834 | timer_setup(&sharpsl_pm.ac_timer, sharpsl_ac_timer, 0); |
78731d33 | 835 | |
96d13082 | 836 | timer_setup(&sharpsl_pm.chrg_full_timer, sharpsl_chrg_full_timer, 0); |
78731d33 DES |
837 | |
838 | led_trigger_register_simple("sharpsl-charge", &sharpsl_charge_led_trigger); | |
839 | ||
840 | sharpsl_pm.machinfo->init(); | |
841 | ||
d5af2778 DES |
842 | gpio_request(sharpsl_pm.machinfo->gpio_acin, "AC IN"); |
843 | gpio_direction_input(sharpsl_pm.machinfo->gpio_acin); | |
844 | gpio_request(sharpsl_pm.machinfo->gpio_batfull, "Battery Full"); | |
845 | gpio_direction_input(sharpsl_pm.machinfo->gpio_batfull); | |
846 | gpio_request(sharpsl_pm.machinfo->gpio_batlock, "Battery Lock"); | |
847 | gpio_direction_input(sharpsl_pm.machinfo->gpio_batlock); | |
d48898a3 DES |
848 | |
849 | /* Register interrupt handlers */ | |
74595e17 | 850 | irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_acin); |
ed7936f9 | 851 | if (request_irq(irq, sharpsl_ac_isr, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "AC Input Detect", sharpsl_ac_isr)) { |
74595e17 | 852 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); |
d48898a3 | 853 | } |
d48898a3 | 854 | |
74595e17 | 855 | irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_batlock); |
ed7936f9 | 856 | if (request_irq(irq, sharpsl_fatal_isr, IRQF_TRIGGER_FALLING, "Battery Cover", sharpsl_fatal_isr)) { |
74595e17 | 857 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); |
d48898a3 | 858 | } |
d48898a3 DES |
859 | |
860 | if (sharpsl_pm.machinfo->gpio_fatal) { | |
74595e17 | 861 | irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_fatal); |
ed7936f9 | 862 | if (request_irq(irq, sharpsl_fatal_isr, IRQF_TRIGGER_FALLING, "Fatal Battery", sharpsl_fatal_isr)) { |
74595e17 | 863 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); |
d48898a3 | 864 | } |
d48898a3 DES |
865 | } |
866 | ||
b64b0b76 | 867 | if (sharpsl_pm.machinfo->batfull_irq) { |
d48898a3 | 868 | /* Register interrupt handler. */ |
74595e17 | 869 | irq = gpio_to_irq(sharpsl_pm.machinfo->gpio_batfull); |
ed7936f9 | 870 | if (request_irq(irq, sharpsl_chrg_full_isr, IRQF_TRIGGER_RISING, "CO", sharpsl_chrg_full_isr)) { |
74595e17 | 871 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", irq); |
d48898a3 | 872 | } |
d48898a3 DES |
873 | } |
874 | ||
78731d33 DES |
875 | ret = device_create_file(&pdev->dev, &dev_attr_battery_percentage); |
876 | ret |= device_create_file(&pdev->dev, &dev_attr_battery_voltage); | |
877 | if (ret != 0) | |
878 | dev_warn(&pdev->dev, "Failed to register attributes (%d)\n", ret); | |
879 | ||
880 | apm_get_power_status = sharpsl_apm_get_power_status; | |
881 | ||
882 | #ifdef CONFIG_PM | |
883 | suspend_set_ops(&sharpsl_pm_ops); | |
884 | #endif | |
885 | ||
886 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); | |
887 | ||
888 | return 0; | |
889 | } | |
890 | ||
74a5b94b | 891 | static void sharpsl_pm_remove(struct platform_device *pdev) |
78731d33 DES |
892 | { |
893 | suspend_set_ops(NULL); | |
894 | ||
895 | device_remove_file(&pdev->dev, &dev_attr_battery_percentage); | |
896 | device_remove_file(&pdev->dev, &dev_attr_battery_voltage); | |
897 | ||
898 | led_trigger_unregister_simple(sharpsl_charge_led_trigger); | |
899 | ||
74595e17 RH |
900 | free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr); |
901 | free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr); | |
d48898a3 DES |
902 | |
903 | if (sharpsl_pm.machinfo->gpio_fatal) | |
74595e17 | 904 | free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr); |
d48898a3 DES |
905 | |
906 | if (sharpsl_pm.machinfo->batfull_irq) | |
74595e17 | 907 | free_irq(gpio_to_irq(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr); |
d48898a3 | 908 | |
d5af2778 DES |
909 | gpio_free(sharpsl_pm.machinfo->gpio_batlock); |
910 | gpio_free(sharpsl_pm.machinfo->gpio_batfull); | |
911 | gpio_free(sharpsl_pm.machinfo->gpio_acin); | |
912 | ||
d48898a3 DES |
913 | if (sharpsl_pm.machinfo->exit) |
914 | sharpsl_pm.machinfo->exit(); | |
78731d33 DES |
915 | |
916 | del_timer_sync(&sharpsl_pm.chrg_full_timer); | |
917 | del_timer_sync(&sharpsl_pm.ac_timer); | |
78731d33 DES |
918 | } |
919 | ||
920 | static struct platform_driver sharpsl_pm_driver = { | |
921 | .probe = sharpsl_pm_probe, | |
74a5b94b | 922 | .remove_new = sharpsl_pm_remove, |
78731d33 DES |
923 | .suspend = sharpsl_pm_suspend, |
924 | .resume = sharpsl_pm_resume, | |
925 | .driver = { | |
926 | .name = "sharpsl-pm", | |
927 | }, | |
928 | }; | |
929 | ||
351a102d | 930 | static int sharpsl_pm_init(void) |
78731d33 DES |
931 | { |
932 | return platform_driver_register(&sharpsl_pm_driver); | |
933 | } | |
934 | ||
935 | static void sharpsl_pm_exit(void) | |
936 | { | |
937 | platform_driver_unregister(&sharpsl_pm_driver); | |
938 | } | |
939 | ||
940 | late_initcall(sharpsl_pm_init); | |
941 | module_exit(sharpsl_pm_exit); |