diff options
author | Dmitry Baryshkov <dbaryshkov@gmail.com> | 2008-06-24 10:51:07 -0400 |
---|---|---|
committer | Anton Vorontsov <cbouatmailru@gmail.com> | 2008-06-30 18:43:12 -0400 |
commit | fece418418f51e92dd7e67e17c5e3fe5a28d3279 (patch) | |
tree | 721b8e18639ede26dc6aa005e118978ff3a22fcf /drivers | |
parent | 75d8807962fc7529b4946e9ec92cae197be5a967 (diff) |
power_supply: Sharp SL-6000 (tosa) batteries support
This patch adds common battery interface support for Sharp SL-6000 (tosa).
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/power/Kconfig | 7 | ||||
-rw-r--r-- | drivers/power/Makefile | 1 | ||||
-rw-r--r-- | drivers/power/tosa_battery.c | 486 |
3 files changed, 494 insertions, 0 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 58c806e9c58a..e3a9c37d08f6 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig | |||
@@ -49,4 +49,11 @@ config BATTERY_OLPC | |||
49 | help | 49 | help |
50 | Say Y to enable support for the battery on the OLPC laptop. | 50 | Say Y to enable support for the battery on the OLPC laptop. |
51 | 51 | ||
52 | config BATTERY_TOSA | ||
53 | tristate "Sharp SL-6000 (tosa) battery" | ||
54 | depends on MACH_TOSA && MFD_TC6393XB | ||
55 | help | ||
56 | Say Y to enable support for the battery on the Sharp Zaurus | ||
57 | SL-6000 (tosa) models. | ||
58 | |||
52 | endif # POWER_SUPPLY | 59 | endif # POWER_SUPPLY |
diff --git a/drivers/power/Makefile b/drivers/power/Makefile index 6413ded5fe5f..1e408fa268cf 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile | |||
@@ -20,3 +20,4 @@ obj-$(CONFIG_APM_POWER) += apm_power.o | |||
20 | obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o | 20 | obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o |
21 | obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o | 21 | obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o |
22 | obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o | 22 | obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o |
23 | obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o | ||
diff --git a/drivers/power/tosa_battery.c b/drivers/power/tosa_battery.c new file mode 100644 index 000000000000..bf664fbd6610 --- /dev/null +++ b/drivers/power/tosa_battery.c | |||
@@ -0,0 +1,486 @@ | |||
1 | /* | ||
2 | * Battery and Power Management code for the Sharp SL-6000x | ||
3 | * | ||
4 | * Copyright (c) 2005 Dirk Opfer | ||
5 | * Copyright (c) 2008 Dmitry Baryshkov | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License version 2 as | ||
9 | * published by the Free Software Foundation. | ||
10 | * | ||
11 | */ | ||
12 | #include <linux/kernel.h> | ||
13 | #include <linux/module.h> | ||
14 | #include <linux/power_supply.h> | ||
15 | #include <linux/wm97xx.h> | ||
16 | #include <linux/delay.h> | ||
17 | #include <linux/spinlock.h> | ||
18 | #include <linux/interrupt.h> | ||
19 | #include <linux/gpio.h> | ||
20 | |||
21 | #include <asm/mach-types.h> | ||
22 | #include <asm/arch/tosa.h> | ||
23 | |||
24 | static DEFINE_MUTEX(bat_lock); /* protects gpio pins */ | ||
25 | static struct work_struct bat_work; | ||
26 | |||
27 | struct tosa_bat { | ||
28 | int status; | ||
29 | struct power_supply psy; | ||
30 | int full_chrg; | ||
31 | |||
32 | struct mutex work_lock; /* protects data */ | ||
33 | |||
34 | bool (*is_present)(struct tosa_bat *bat); | ||
35 | int gpio_full; | ||
36 | int gpio_charge_off; | ||
37 | |||
38 | int technology; | ||
39 | |||
40 | int gpio_bat; | ||
41 | int adc_bat; | ||
42 | int adc_bat_divider; | ||
43 | int bat_max; | ||
44 | int bat_min; | ||
45 | |||
46 | int gpio_temp; | ||
47 | int adc_temp; | ||
48 | int adc_temp_divider; | ||
49 | }; | ||
50 | |||
51 | static struct tosa_bat tosa_bat_main; | ||
52 | static struct tosa_bat tosa_bat_jacket; | ||
53 | |||
54 | static unsigned long tosa_read_bat(struct tosa_bat *bat) | ||
55 | { | ||
56 | unsigned long value = 0; | ||
57 | |||
58 | if (bat->gpio_bat < 0 || bat->adc_bat < 0) | ||
59 | return 0; | ||
60 | |||
61 | mutex_lock(&bat_lock); | ||
62 | gpio_set_value(bat->gpio_bat, 1); | ||
63 | msleep(5); | ||
64 | value = wm97xx_read_aux_adc(bat->psy.dev->parent->driver_data, | ||
65 | bat->adc_bat); | ||
66 | gpio_set_value(bat->gpio_bat, 0); | ||
67 | mutex_unlock(&bat_lock); | ||
68 | |||
69 | value = value * 1000000 / bat->adc_bat_divider; | ||
70 | |||
71 | return value; | ||
72 | } | ||
73 | |||
74 | static unsigned long tosa_read_temp(struct tosa_bat *bat) | ||
75 | { | ||
76 | unsigned long value = 0; | ||
77 | |||
78 | if (bat->gpio_temp < 0 || bat->adc_temp < 0) | ||
79 | return 0; | ||
80 | |||
81 | mutex_lock(&bat_lock); | ||
82 | gpio_set_value(bat->gpio_temp, 1); | ||
83 | msleep(5); | ||
84 | value = wm97xx_read_aux_adc(bat->psy.dev->parent->driver_data, | ||
85 | bat->adc_temp); | ||
86 | gpio_set_value(bat->gpio_temp, 0); | ||
87 | mutex_unlock(&bat_lock); | ||
88 | |||
89 | value = value * 10000 / bat->adc_temp_divider; | ||
90 | |||
91 | return value; | ||
92 | } | ||
93 | |||
94 | static int tosa_bat_get_property(struct power_supply *psy, | ||
95 | enum power_supply_property psp, | ||
96 | union power_supply_propval *val) | ||
97 | { | ||
98 | int ret = 0; | ||
99 | struct tosa_bat *bat = container_of(psy, struct tosa_bat, psy); | ||
100 | |||
101 | if (bat->is_present && !bat->is_present(bat) | ||
102 | && psp != POWER_SUPPLY_PROP_PRESENT) { | ||
103 | return -ENODEV; | ||
104 | } | ||
105 | |||
106 | switch (psp) { | ||
107 | case POWER_SUPPLY_PROP_STATUS: | ||
108 | val->intval = bat->status; | ||
109 | break; | ||
110 | case POWER_SUPPLY_PROP_TECHNOLOGY: | ||
111 | val->intval = bat->technology; | ||
112 | break; | ||
113 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | ||
114 | val->intval = tosa_read_bat(bat); | ||
115 | break; | ||
116 | case POWER_SUPPLY_PROP_VOLTAGE_MAX: | ||
117 | if (bat->full_chrg == -1) | ||
118 | val->intval = bat->bat_max; | ||
119 | else | ||
120 | val->intval = bat->full_chrg; | ||
121 | break; | ||
122 | case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: | ||
123 | val->intval = bat->bat_max; | ||
124 | break; | ||
125 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: | ||
126 | val->intval = bat->bat_min; | ||
127 | break; | ||
128 | case POWER_SUPPLY_PROP_TEMP: | ||
129 | val->intval = tosa_read_temp(bat); | ||
130 | break; | ||
131 | case POWER_SUPPLY_PROP_PRESENT: | ||
132 | val->intval = bat->is_present ? bat->is_present(bat) : 1; | ||
133 | break; | ||
134 | default: | ||
135 | ret = -EINVAL; | ||
136 | break; | ||
137 | } | ||
138 | return ret; | ||
139 | } | ||
140 | |||
141 | static bool tosa_jacket_bat_is_present(struct tosa_bat *bat) | ||
142 | { | ||
143 | return gpio_get_value(TOSA_GPIO_JACKET_DETECT) == 0; | ||
144 | } | ||
145 | |||
146 | static void tosa_bat_external_power_changed(struct power_supply *psy) | ||
147 | { | ||
148 | schedule_work(&bat_work); | ||
149 | } | ||
150 | |||
151 | static irqreturn_t tosa_bat_gpio_isr(int irq, void *data) | ||
152 | { | ||
153 | pr_info("tosa_bat_gpio irq: %d\n", gpio_get_value(irq_to_gpio(irq))); | ||
154 | schedule_work(&bat_work); | ||
155 | return IRQ_HANDLED; | ||
156 | } | ||
157 | |||
158 | static void tosa_bat_update(struct tosa_bat *bat) | ||
159 | { | ||
160 | int old; | ||
161 | struct power_supply *psy = &bat->psy; | ||
162 | |||
163 | mutex_lock(&bat->work_lock); | ||
164 | |||
165 | old = bat->status; | ||
166 | |||
167 | if (bat->is_present && !bat->is_present(bat)) { | ||
168 | printk(KERN_NOTICE "%s not present\n", psy->name); | ||
169 | bat->status = POWER_SUPPLY_STATUS_UNKNOWN; | ||
170 | bat->full_chrg = -1; | ||
171 | } else if (power_supply_am_i_supplied(psy)) { | ||
172 | if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) { | ||
173 | gpio_set_value(bat->gpio_charge_off, 0); | ||
174 | mdelay(15); | ||
175 | } | ||
176 | |||
177 | if (gpio_get_value(bat->gpio_full)) { | ||
178 | if (old == POWER_SUPPLY_STATUS_CHARGING || | ||
179 | bat->full_chrg == -1) | ||
180 | bat->full_chrg = tosa_read_bat(bat); | ||
181 | |||
182 | gpio_set_value(bat->gpio_charge_off, 1); | ||
183 | bat->status = POWER_SUPPLY_STATUS_FULL; | ||
184 | } else { | ||
185 | gpio_set_value(bat->gpio_charge_off, 0); | ||
186 | bat->status = POWER_SUPPLY_STATUS_CHARGING; | ||
187 | } | ||
188 | } else { | ||
189 | gpio_set_value(bat->gpio_charge_off, 1); | ||
190 | bat->status = POWER_SUPPLY_STATUS_DISCHARGING; | ||
191 | } | ||
192 | |||
193 | if (old != bat->status) | ||
194 | power_supply_changed(psy); | ||
195 | |||
196 | mutex_unlock(&bat->work_lock); | ||
197 | } | ||
198 | |||
199 | static void tosa_bat_work(struct work_struct *work) | ||
200 | { | ||
201 | tosa_bat_update(&tosa_bat_main); | ||
202 | tosa_bat_update(&tosa_bat_jacket); | ||
203 | } | ||
204 | |||
205 | |||
206 | static enum power_supply_property tosa_bat_main_props[] = { | ||
207 | POWER_SUPPLY_PROP_STATUS, | ||
208 | POWER_SUPPLY_PROP_TECHNOLOGY, | ||
209 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | ||
210 | POWER_SUPPLY_PROP_VOLTAGE_MAX, | ||
211 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | ||
212 | POWER_SUPPLY_PROP_TEMP, | ||
213 | POWER_SUPPLY_PROP_PRESENT, | ||
214 | }; | ||
215 | |||
216 | static enum power_supply_property tosa_bat_bu_props[] = { | ||
217 | POWER_SUPPLY_PROP_STATUS, | ||
218 | POWER_SUPPLY_PROP_TECHNOLOGY, | ||
219 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | ||
220 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | ||
221 | POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, | ||
222 | POWER_SUPPLY_PROP_PRESENT, | ||
223 | }; | ||
224 | |||
225 | static struct tosa_bat tosa_bat_main = { | ||
226 | .status = POWER_SUPPLY_STATUS_DISCHARGING, | ||
227 | .full_chrg = -1, | ||
228 | .psy = { | ||
229 | .name = "main-battery", | ||
230 | .type = POWER_SUPPLY_TYPE_BATTERY, | ||
231 | .properties = tosa_bat_main_props, | ||
232 | .num_properties = ARRAY_SIZE(tosa_bat_main_props), | ||
233 | .get_property = tosa_bat_get_property, | ||
234 | .external_power_changed = tosa_bat_external_power_changed, | ||
235 | .use_for_apm = 1, | ||
236 | }, | ||
237 | |||
238 | .gpio_full = TOSA_GPIO_BAT0_CRG, | ||
239 | .gpio_charge_off = TOSA_GPIO_CHARGE_OFF, | ||
240 | |||
241 | .technology = POWER_SUPPLY_TECHNOLOGY_LIPO, | ||
242 | |||
243 | .gpio_bat = TOSA_GPIO_BAT0_V_ON, | ||
244 | .adc_bat = WM97XX_AUX_ID3, | ||
245 | .adc_bat_divider = 414, | ||
246 | .bat_max = 4310000, | ||
247 | .bat_min = 1551 * 1000000 / 414, | ||
248 | |||
249 | .gpio_temp = TOSA_GPIO_BAT1_TH_ON, | ||
250 | .adc_temp = WM97XX_AUX_ID2, | ||
251 | .adc_temp_divider = 10000, | ||
252 | }; | ||
253 | |||
254 | static struct tosa_bat tosa_bat_jacket = { | ||
255 | .status = POWER_SUPPLY_STATUS_DISCHARGING, | ||
256 | .full_chrg = -1, | ||
257 | .psy = { | ||
258 | .name = "jacket-battery", | ||
259 | .type = POWER_SUPPLY_TYPE_BATTERY, | ||
260 | .properties = tosa_bat_main_props, | ||
261 | .num_properties = ARRAY_SIZE(tosa_bat_main_props), | ||
262 | .get_property = tosa_bat_get_property, | ||
263 | .external_power_changed = tosa_bat_external_power_changed, | ||
264 | }, | ||
265 | |||
266 | .is_present = tosa_jacket_bat_is_present, | ||
267 | .gpio_full = TOSA_GPIO_BAT1_CRG, | ||
268 | .gpio_charge_off = TOSA_GPIO_CHARGE_OFF_JC, | ||
269 | |||
270 | .technology = POWER_SUPPLY_TECHNOLOGY_LIPO, | ||
271 | |||
272 | .gpio_bat = TOSA_GPIO_BAT1_V_ON, | ||
273 | .adc_bat = WM97XX_AUX_ID3, | ||
274 | .adc_bat_divider = 414, | ||
275 | .bat_max = 4310000, | ||
276 | .bat_min = 1551 * 1000000 / 414, | ||
277 | |||
278 | .gpio_temp = TOSA_GPIO_BAT0_TH_ON, | ||
279 | .adc_temp = WM97XX_AUX_ID2, | ||
280 | .adc_temp_divider = 10000, | ||
281 | }; | ||
282 | |||
283 | static struct tosa_bat tosa_bat_bu = { | ||
284 | .status = POWER_SUPPLY_STATUS_UNKNOWN, | ||
285 | .full_chrg = -1, | ||
286 | |||
287 | .psy = { | ||
288 | .name = "backup-battery", | ||
289 | .type = POWER_SUPPLY_TYPE_BATTERY, | ||
290 | .properties = tosa_bat_bu_props, | ||
291 | .num_properties = ARRAY_SIZE(tosa_bat_bu_props), | ||
292 | .get_property = tosa_bat_get_property, | ||
293 | .external_power_changed = tosa_bat_external_power_changed, | ||
294 | }, | ||
295 | |||
296 | .gpio_full = -1, | ||
297 | .gpio_charge_off = -1, | ||
298 | |||
299 | .technology = POWER_SUPPLY_TECHNOLOGY_LiMn, | ||
300 | |||
301 | .gpio_bat = TOSA_GPIO_BU_CHRG_ON, | ||
302 | .adc_bat = WM97XX_AUX_ID4, | ||
303 | .adc_bat_divider = 1266, | ||
304 | |||
305 | .gpio_temp = -1, | ||
306 | .adc_temp = -1, | ||
307 | .adc_temp_divider = -1, | ||
308 | }; | ||
309 | |||
310 | static struct { | ||
311 | int gpio; | ||
312 | char *name; | ||
313 | bool output; | ||
314 | int value; | ||
315 | } gpios[] = { | ||
316 | { TOSA_GPIO_CHARGE_OFF, "main charge off", 1, 1 }, | ||
317 | { TOSA_GPIO_CHARGE_OFF_JC, "jacket charge off", 1, 1 }, | ||
318 | { TOSA_GPIO_BAT_SW_ON, "battery switch", 1, 0 }, | ||
319 | { TOSA_GPIO_BAT0_V_ON, "main battery", 1, 0 }, | ||
320 | { TOSA_GPIO_BAT1_V_ON, "jacket battery", 1, 0 }, | ||
321 | { TOSA_GPIO_BAT1_TH_ON, "main battery temp", 1, 0 }, | ||
322 | { TOSA_GPIO_BAT0_TH_ON, "jacket battery temp", 1, 0 }, | ||
323 | { TOSA_GPIO_BU_CHRG_ON, "backup battery", 1, 0 }, | ||
324 | { TOSA_GPIO_BAT0_CRG, "main battery full", 0, 0 }, | ||
325 | { TOSA_GPIO_BAT1_CRG, "jacket battery full", 0, 0 }, | ||
326 | { TOSA_GPIO_BAT0_LOW, "main battery low", 0, 0 }, | ||
327 | { TOSA_GPIO_BAT1_LOW, "jacket battery low", 0, 0 }, | ||
328 | { TOSA_GPIO_JACKET_DETECT, "jacket detect", 0, 0 }, | ||
329 | }; | ||
330 | |||
331 | #ifdef CONFIG_PM | ||
332 | static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state) | ||
333 | { | ||
334 | /* flush all pending status updates */ | ||
335 | flush_scheduled_work(); | ||
336 | return 0; | ||
337 | } | ||
338 | |||
339 | static int tosa_bat_resume(struct platform_device *dev) | ||
340 | { | ||
341 | /* things may have changed while we were away */ | ||
342 | schedule_work(&bat_work); | ||
343 | return 0; | ||
344 | } | ||
345 | #else | ||
346 | #define tosa_bat_suspend NULL | ||
347 | #define tosa_bat_resume NULL | ||
348 | #endif | ||
349 | |||
350 | static int __devinit tosa_bat_probe(struct platform_device *dev) | ||
351 | { | ||
352 | int ret; | ||
353 | int i; | ||
354 | |||
355 | if (!machine_is_tosa()) | ||
356 | return -ENODEV; | ||
357 | |||
358 | for (i = 0; i < ARRAY_SIZE(gpios); i++) { | ||
359 | ret = gpio_request(gpios[i].gpio, gpios[i].name); | ||
360 | if (ret) { | ||
361 | i--; | ||
362 | goto err_gpio; | ||
363 | } | ||
364 | |||
365 | if (gpios[i].output) | ||
366 | ret = gpio_direction_output(gpios[i].gpio, | ||
367 | gpios[i].value); | ||
368 | else | ||
369 | ret = gpio_direction_input(gpios[i].gpio); | ||
370 | |||
371 | if (ret) | ||
372 | goto err_gpio; | ||
373 | } | ||
374 | |||
375 | mutex_init(&tosa_bat_main.work_lock); | ||
376 | mutex_init(&tosa_bat_jacket.work_lock); | ||
377 | |||
378 | INIT_WORK(&bat_work, tosa_bat_work); | ||
379 | |||
380 | ret = power_supply_register(&dev->dev, &tosa_bat_main.psy); | ||
381 | if (ret) | ||
382 | goto err_psy_reg_main; | ||
383 | ret = power_supply_register(&dev->dev, &tosa_bat_jacket.psy); | ||
384 | if (ret) | ||
385 | goto err_psy_reg_jacket; | ||
386 | ret = power_supply_register(&dev->dev, &tosa_bat_bu.psy); | ||
387 | if (ret) | ||
388 | goto err_psy_reg_bu; | ||
389 | |||
390 | ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), | ||
391 | tosa_bat_gpio_isr, | ||
392 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, | ||
393 | "main full", &tosa_bat_main); | ||
394 | if (ret) | ||
395 | goto err_req_main; | ||
396 | |||
397 | ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), | ||
398 | tosa_bat_gpio_isr, | ||
399 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, | ||
400 | "jacket full", &tosa_bat_jacket); | ||
401 | if (ret) | ||
402 | goto err_req_jacket; | ||
403 | |||
404 | ret = request_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT), | ||
405 | tosa_bat_gpio_isr, | ||
406 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, | ||
407 | "jacket detect", &tosa_bat_jacket); | ||
408 | if (!ret) { | ||
409 | schedule_work(&bat_work); | ||
410 | return 0; | ||
411 | } | ||
412 | |||
413 | free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket); | ||
414 | err_req_jacket: | ||
415 | free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main); | ||
416 | err_req_main: | ||
417 | power_supply_unregister(&tosa_bat_bu.psy); | ||
418 | err_psy_reg_bu: | ||
419 | power_supply_unregister(&tosa_bat_jacket.psy); | ||
420 | err_psy_reg_jacket: | ||
421 | power_supply_unregister(&tosa_bat_main.psy); | ||
422 | err_psy_reg_main: | ||
423 | |||
424 | /* see comment in tosa_bat_remove */ | ||
425 | flush_scheduled_work(); | ||
426 | |||
427 | i--; | ||
428 | err_gpio: | ||
429 | for (; i >= 0; i--) | ||
430 | gpio_free(gpios[i].gpio); | ||
431 | |||
432 | return ret; | ||
433 | } | ||
434 | |||
435 | static int __devexit tosa_bat_remove(struct platform_device *dev) | ||
436 | { | ||
437 | int i; | ||
438 | |||
439 | free_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT), &tosa_bat_jacket); | ||
440 | free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket); | ||
441 | free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main); | ||
442 | |||
443 | power_supply_unregister(&tosa_bat_bu.psy); | ||
444 | power_supply_unregister(&tosa_bat_jacket.psy); | ||
445 | power_supply_unregister(&tosa_bat_main.psy); | ||
446 | |||
447 | /* | ||
448 | * now flush all pending work. | ||
449 | * we won't get any more schedules, since all | ||
450 | * sources (isr and external_power_changed) | ||
451 | * are unregistered now. | ||
452 | */ | ||
453 | flush_scheduled_work(); | ||
454 | |||
455 | for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--) | ||
456 | gpio_free(gpios[i].gpio); | ||
457 | |||
458 | return 0; | ||
459 | } | ||
460 | |||
461 | static struct platform_driver tosa_bat_driver = { | ||
462 | .driver.name = "wm97xx-battery", | ||
463 | .driver.owner = THIS_MODULE, | ||
464 | .probe = tosa_bat_probe, | ||
465 | .remove = __devexit_p(tosa_bat_remove), | ||
466 | .suspend = tosa_bat_suspend, | ||
467 | .resume = tosa_bat_resume, | ||
468 | }; | ||
469 | |||
470 | static int __init tosa_bat_init(void) | ||
471 | { | ||
472 | return platform_driver_register(&tosa_bat_driver); | ||
473 | } | ||
474 | |||
475 | static void __exit tosa_bat_exit(void) | ||
476 | { | ||
477 | platform_driver_unregister(&tosa_bat_driver); | ||
478 | } | ||
479 | |||
480 | module_init(tosa_bat_init); | ||
481 | module_exit(tosa_bat_exit); | ||
482 | |||
483 | MODULE_LICENSE("GPL"); | ||
484 | MODULE_AUTHOR("Dmitry Baryshkov"); | ||
485 | MODULE_DESCRIPTION("Tosa battery driver"); | ||
486 | MODULE_ALIAS("platform:wm97xx-battery"); | ||