1 /* drivers/power/rk30_adc_battery.c
3 * battery detect driver for the rk30
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 #include <linux/module.h>
17 #include <linux/err.h>
18 #include <linux/platform_device.h>
19 #include <linux/power_supply.h>
20 #include <linux/regulator/consumer.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/interrupt.h>
25 #include <asm/mach-types.h>
26 #include <asm/mach/arch.h>
27 #include <asm/mach/map.h>
28 #include <mach/gpio.h>
29 #include <linux/adc.h>
30 #include <mach/iomux.h>
31 #include <mach/board.h>
32 #include <linux/delay.h>
33 #include <linux/ktime.h>
34 #include <linux/slab.h>
35 #include <linux/syscalls.h>
37 #include <linux/wakelock.h>
40 #define DBG(x...) printk(x)
45 static int rk30_battery_dbg_level = 0;
46 module_param_named(dbg_level, rk30_battery_dbg_level, int, 0644);
47 #define pr_bat( args...) \
49 if (rk30_battery_dbg_level) { \
55 /*******************ÒÔϲÎÊý¿ÉÒÔÐÞ¸Ä******************************/
56 #define TIMER_MS_COUNTS 1000 //¶¨Ê±Æ÷µÄ³¤¶Èms
57 //ÒÔϲÎÊýÐèÒª¸ù¾Ýʵ¼Ê²âÊÔµ÷Õû
58 #define SLOPE_SECOND_COUNTS 15 //ͳ¼ÆµçѹбÂʵÄʱ¼ä¼ä¸ôs
59 #define DISCHARGE_MIN_SECOND 45 //×î¿ì·Åµçµç1%ʱ¼ä
60 #define CHARGE_MIN_SECOND 45 //×î¿ì³äµçµç1%ʱ¼ä
61 #define CHARGE_MID_SECOND 90 //ÆÕͨ³äµçµç1%ʱ¼ä
62 #define CHARGE_MAX_SECOND 250 //×³äµçµç1%ʱ¼ä
63 #define CHARGE_FULL_DELAY_TIMES 10 //³äµçÂú¼ì²â·À¶¶Ê±¼ä
64 #define USBCHARGE_IDENTIFY_TIMES 5 //²åÈëUSB»ìÁ÷£¬pcʶ±ð¼ì²âʱ¼ä
66 #define NUM_VOLTAGE_SAMPLE ((SLOPE_SECOND_COUNTS * 1000) / TIMER_MS_COUNTS)
67 #define NUM_DISCHARGE_MIN_SAMPLE ((DISCHARGE_MIN_SECOND * 1000) / TIMER_MS_COUNTS)
68 #define NUM_CHARGE_MIN_SAMPLE ((CHARGE_MIN_SECOND * 1000) / TIMER_MS_COUNTS)
69 #define NUM_CHARGE_MID_SAMPLE ((CHARGE_MID_SECOND * 1000) / TIMER_MS_COUNTS)
70 #define NUM_CHARGE_MAX_SAMPLE ((CHARGE_MAX_SECOND * 1000) / TIMER_MS_COUNTS)
71 #define NUM_CHARGE_FULL_DELAY_TIMES ((CHARGE_FULL_DELAY_TIMES * 1000) / TIMER_MS_COUNTS) //³äµçÂú״̬³ÖÐøʱ¼ä³¤¶È
72 #define NUM_USBCHARGE_IDENTIFY_TIMES ((USBCHARGE_IDENTIFY_TIMES * 1000) / TIMER_MS_COUNTS) //³äµçÂú״̬³ÖÐøʱ¼ä³¤¶È
74 #define BAT_2V5_VALUE 2500
77 #define BATT_FILENAME "/data/bat_last_capacity.dat"
79 static struct wake_lock batt_wake_lock;
88 #ifdef CONFIG_BATTERY_RK30_VOL3V8
90 #define BATT_MAX_VOL_VALUE 4120 //ÂúµçʱµÄµç³Øµçѹ
91 #define BATT_ZERO_VOL_VALUE 3400 //¹Ø»úʱµÄµç³Øµçѹ
92 #define BATT_NOMAL_VOL_VALUE 3800
94 #define BAT_PULL_UP_R 200
95 #define BAT_PULL_DOWN_R 200
97 static struct batt_vol_cal batt_table[] = {
98 {0,3400,3520},{1,3420,3525},{2,3420,3575},{3,3475,3600},{5,3505,3620},{7,3525,3644},
99 {9,3540,3662},{11,3557,3670},{13,3570,3684},{15,3580,3700},{17,3610,3715},
100 {19,3630,3720},{21,3640,3748},{23,3652,3756},{25,3662,3775},{27,3672,3790},
101 {29,3680,3810},{31,3687,3814},{33,3693,3818},{35,3699,3822},{37,3705,3825},
102 {39,3710,3830},{41,3714,3832},{43,3718,3834},{45,3722,3836},{47,3726,3837},
103 {49,3730,3839},{51,3734,3841},{53,3738,3842},{55,3742,3844},{57,3746,3844},
104 {59,3750,3855},{61,3756,3860},{63,3764,3864},{65,3774,3871},{67,3786,3890},
105 {69,3800,3910},{71,3808,3930},{73,3817,3977},{75,3827,3977},{77,3845,3997},
106 {79,3950,4030},{81,3964,4047},{83,3982,4064},{85,4002,4080},{87,4026,4096},
107 {89,4030,4132},{91,4034,4144},{93,4055,4150},{95,4085,4195},{97,4085,4195},{100,4120,4200},
110 #define BATT_MAX_VOL_VALUE 8284 //Full charge voltage
111 #define BATT_ZERO_VOL_VALUE 6800 // power down voltage
112 #define BATT_NOMAL_VOL_VALUE 7600
114 //¶¨ÒåADC²ÉÑù·Öѹµç×裬ÒÔʵ¼ÊֵΪ׼£¬µ¥Î»K
116 #define BAT_PULL_UP_R 300
117 #define BAT_PULL_DOWN_R 100
119 static struct batt_vol_cal batt_table[] = {
120 {0,6800,7400}, {1,6840,7440}, {2,6880,7480}, {3,6950,7450}, {5,7010,7510}, {7,7050,7550},
121 {9,7080,7580}, {11,7104,7604}, {13,7140,7640}, {15,7160,7660}, {17,7220,7720},
122 {19,7260,7760}, {21,7280,7780}, {23,7304,7802}, {25,7324,7824}, {27,7344,7844},
123 {29,7360,7860}, {31,7374,7874}, {33,7386,7886}, {35,7398,7898}, {37,7410,7910},//500
124 {39,7420,7920}, {41,7424,7928}, {43,7436,7947}, {45,7444,7944}, {47,7450,7958}, //508
125 {49,7460,7965}, {51,7468,7975}, {53, 7476,7990}, {55,7482,8000}, {57,7492,8005}, // 5 14
126 {59,7500,8011}, {61,7510,8033}, {63,7528,8044}, {65,7548,8055}, {67,7560,8066},//506
127 {69,7600,8070}, {71,7618,8075}, {73,7634,8080}, {75,7654,8085}, {77,7690,8100}, //400
128 {79,7900,8180}, {81,7920,8210}, {83,7964,8211}, {85,8000,8214}, {87,8002,8218},//290
129 {89,8012, 8220}, {91,8022,8235}, {93,8110,8260}, {95,8140,8290}, {97,8170,8300}, {100,8200 ,8310},//110
135 #define BATT_NUM ARRAY_SIZE(batt_table)
137 #define adc_to_voltage(adc_val) ((adc_val * BAT_2V5_VALUE * (BAT_PULL_UP_R + BAT_PULL_DOWN_R)) / (1024 * BAT_PULL_DOWN_R))
139 /********************************************************************************/
141 extern int dwc_vbus_status(void);
142 extern int get_msc_connect_flag(void);
144 struct rk30_adc_battery_data {
147 //struct timer_list timer;
148 struct workqueue_struct *wq;
149 struct delayed_work delay_work;
150 struct work_struct dcwakeup_work;
151 struct work_struct lowerpower_work;
154 struct rk30_adc_battery_platform_data *pdata;
158 struct adc_client *client;
160 int adc_samples[NUM_VOLTAGE_SAMPLE+2];
170 int old_charge_level;
172 int gBatCapacityDisChargeCnt;
173 int gBatCapacityChargeCnt;
176 int suspend_capacity;
181 static struct rk30_adc_battery_data *gBatteryData;
187 BATTERY_CAPACITY = 3,
188 BATTERY_AC_ONLINE = 4,
189 BATTERY_STATUS_CHANGED = 5,
190 AC_STATUS_CHANGED = 6,
191 BATTERY_INT_STATUS = 7,
192 BATTERY_INT_ENABLE = 8,
205 static int rk30_adc_battery_load_capacity(void)
208 int* p = (int *)value;
209 long fd = sys_open(BATT_FILENAME,O_RDONLY,0);
212 pr_bat("rk30_adc_battery_load_capacity: open file /data/bat_last_capacity.dat failed\n");
216 sys_read(fd,(char __user *)value,4);
222 static void rk30_adc_battery_put_capacity(int loadcapacity)
225 int* p = (int *)value;
226 long fd = sys_open(BATT_FILENAME,O_CREAT | O_RDWR,0);
229 pr_bat("rk30_adc_battery_put_capacity: open file /data/bat_last_capacity.dat failed\n");
234 sys_write(fd, (const char __user *)value, 4);
239 static void rk30_adc_battery_charge_enable(struct rk30_adc_battery_data *bat)
241 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
243 if (pdata->charge_set_pin != INVALID_GPIO){
244 gpio_direction_output(pdata->charge_set_pin, pdata->charge_set_level);
248 static void rk30_adc_battery_charge_disable(struct rk30_adc_battery_data *bat)
250 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
252 if (pdata->charge_set_pin != INVALID_GPIO){
253 gpio_direction_output(pdata->charge_set_pin, 1 - pdata->charge_set_level);
257 //extern int suspend_flag;
258 static int rk30_adc_battery_get_charge_level(struct rk30_adc_battery_data *bat)
261 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
263 #if defined (CONFIG_BATTERY_RK30_AC_CHARGE)
264 if (pdata->dc_det_pin != INVALID_GPIO){
265 if (gpio_get_value (pdata->dc_det_pin) == pdata->dc_det_level){
271 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
275 if (1 == dwc_vbus_status()) { //¼ì²âµ½USB²åÈ룬µ«ÊÇÎÞ·¨Ê¶±ðÊÇ·ñÊdzäµçÆ÷
276 //ͨ¹ýÑÓʱ¼ì²âPCʶ±ð±êÖ¾£¬Èç¹û³¬Ê±¼ì²â²»µ½£¬ËµÃ÷Êdzäµç
277 if (0 == get_msc_connect_flag()){ //²åÈë³äµçÆ÷ʱ¼ä´óÓÚÒ»¶¨Ê±¼äÖ®ºó£¬¿ªÊ¼½øÈë³äµç״̬
278 if (++gBatUsbChargeCnt >= NUM_USBCHARGE_IDENTIFY_TIMES){
279 gBatUsbChargeCnt = NUM_USBCHARGE_IDENTIFY_TIMES + 1;
282 } //·ñÔò£¬²»½øÈë³äµçģʽ
285 gBatUsbChargeCnt = 0;
286 if (2 == dwc_vbus_status()) {
295 //int old_charge_level;
296 static int rk30_adc_battery_status_samples(struct rk30_adc_battery_data *bat)
300 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
302 charge_level = rk30_adc_battery_get_charge_level(bat);
304 //¼ì²â³äµç״̬±ä»¯Çé¿ö
305 if (charge_level != bat->old_charge_level){
306 bat->old_charge_level = charge_level;
310 rk30_adc_battery_charge_enable(bat);
313 rk30_adc_battery_charge_disable(bat);
315 bat->bat_status_cnt = 0; //״̬±ä»¯¿ªÊ¼¼ÆÊý
318 if(charge_level == 0){
321 bat->bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
325 if (pdata->charge_ok_pin == INVALID_GPIO){ //no charge_ok_pin
327 if (bat->bat_capacity == 100){
328 if (bat->bat_status != POWER_SUPPLY_STATUS_FULL){
329 bat->bat_status = POWER_SUPPLY_STATUS_FULL;
334 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
337 else{ // pin of charge_ok_pin
338 if (gpio_get_value(pdata->charge_ok_pin) != pdata->charge_ok_level){
341 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
344 //¼ì²âµ½³äµçÂúµçƽ±êÖ¾
347 if (bat->full_times >= NUM_CHARGE_FULL_DELAY_TIMES) {
348 bat->full_times = NUM_CHARGE_FULL_DELAY_TIMES + 1;
351 if ((bat->full_times >= NUM_CHARGE_FULL_DELAY_TIMES) && (bat->bat_capacity >= 99)){
352 if (bat->bat_status != POWER_SUPPLY_STATUS_FULL){
353 bat->bat_status = POWER_SUPPLY_STATUS_FULL;
354 bat->bat_capacity = 100;
359 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
368 static int *pSamples;
369 static void rk30_adc_battery_voltage_samples(struct rk30_adc_battery_data *bat)
372 int i,*pStart = bat->adc_samples, num = 0;
373 int level = rk30_adc_battery_get_charge_level(bat);
376 value = bat->adc_val;
377 adc_async_read(bat->client);
379 *pSamples++ = adc_to_voltage(value);
381 bat->bat_status_cnt++;
382 if (bat->bat_status_cnt > NUM_VOLTAGE_SAMPLE) bat->bat_status_cnt = NUM_VOLTAGE_SAMPLE + 1;
384 num = pSamples - pStart;
386 if (num >= NUM_VOLTAGE_SAMPLE){
388 num = NUM_VOLTAGE_SAMPLE;
393 for (i = 0; i < num; i++){
394 value += bat->adc_samples[i];
396 bat->bat_voltage = value / num;
400 if(bat->bat_voltage >= batt_table[BATT_NUM-1].charge_vol+ 10)
401 bat->bat_voltage = batt_table[BATT_NUM-1].charge_vol + 10;
402 else if(bat->bat_voltage <= batt_table[0].charge_vol - 10)
403 bat->bat_voltage = batt_table[0].charge_vol - 10;
406 if(bat->bat_voltage >= batt_table[BATT_NUM-1].dis_charge_vol+ 10)
407 bat->bat_voltage = batt_table[BATT_NUM-1].dis_charge_vol + 10;
408 else if(bat->bat_voltage <= batt_table[0].dis_charge_vol - 10)
409 bat->bat_voltage = batt_table[0].dis_charge_vol - 10;
414 static int rk30_adc_battery_voltage_to_capacity(struct rk30_adc_battery_data *bat, int BatVoltage)
419 struct batt_vol_cal *p;
422 if (rk30_adc_battery_get_charge_level(bat)){ //charge
423 if(BatVoltage >= (p[BATT_NUM - 1].charge_vol)){
427 if(BatVoltage <= (p[0].charge_vol)){
431 for(i = 0; i < BATT_NUM - 1; i++){
433 if(((p[i].charge_vol) <= BatVoltage) && (BatVoltage < (p[i+1].charge_vol))){
434 capacity = p[i].disp_cal + ((BatVoltage - p[i].charge_vol) * (p[i+1].disp_cal -p[i].disp_cal ))/ (p[i+1].charge_vol- p[i].charge_vol);
443 if(BatVoltage >= (p[BATT_NUM - 1].dis_charge_vol)){
447 if(BatVoltage <= (p[0].dis_charge_vol)){
451 for(i = 0; i < BATT_NUM - 1; i++){
452 if(((p[i].dis_charge_vol) <= BatVoltage) && (BatVoltage < (p[i+1].dis_charge_vol))){
453 capacity = p[i].disp_cal+ ((BatVoltage - p[i].dis_charge_vol) * (p[i+1].disp_cal -p[i].disp_cal ) )/ (p[i+1].dis_charge_vol- p[i].dis_charge_vol) ;
466 static void rk30_adc_battery_capacity_samples(struct rk30_adc_battery_data *bat)
469 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
471 //³ä·Åµç״̬±ä»¯ºó£¬BufferÌîÂú֮ǰ£¬²»¸üÐÂ
472 if (bat->bat_status_cnt < NUM_VOLTAGE_SAMPLE) {
473 bat->gBatCapacityDisChargeCnt = 0;
474 bat->gBatCapacityChargeCnt = 0;
478 capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage);
480 if (rk30_adc_battery_get_charge_level(bat)){
481 if (capacity > bat->bat_capacity){
482 //ʵ¼Ê²ÉÑùµ½µÄÈÝÁ¿±ÈÏÔʾµÄÈÝÁ¿´ó£¬Öð¼¶ÉÏÉý
483 if (++(bat->gBatCapacityDisChargeCnt) >= NUM_CHARGE_MIN_SAMPLE){
484 bat->gBatCapacityDisChargeCnt = 0;
485 if (bat->bat_capacity < 99){
490 bat->gBatCapacityChargeCnt = 0;
492 else{ // ʵ¼ÊµÄÈÝÁ¿±È²ÉÑù±È ÏÔʾµÄÈÝÁ¿Ð¡
493 bat->gBatCapacityDisChargeCnt = 0;
494 (bat->gBatCapacityChargeCnt)++;
496 if (pdata->charge_ok_pin != INVALID_GPIO){
497 if (gpio_get_value(pdata->charge_ok_pin) == pdata->charge_ok_level){
498 //¼ì²âµ½µç³Ø³äÂú±êÖ¾£¬Í¬Ê±³¤Ê±¼äÄÚ³äµçµçѹÎޱ仯£¬¿ªÊ¼Æô¶¯¼Æʱ³äµç£¬¿ìËÙÉÏÉýÈÝÁ¿
499 if (bat->gBatCapacityChargeCnt >= NUM_CHARGE_MIN_SAMPLE){
500 bat->gBatCapacityChargeCnt = 0;
501 if (bat->bat_capacity < 99){
509 if (capacity > capacitytmp){
510 //¹ý³ÌÖÐÈç¹ûµçѹÓÐÔö³¤£¬¶¨Ê±Æ÷¸´Î»£¬·ÀÖ¹¶¨Ê±Æ÷Ä£Äâ³äµç±Èʵ¼Ê³äµç¿ì
511 gBatCapacityChargeCnt = 0;
513 else if (/*bat->bat_capacity >= 85) &&*/ (gBatCapacityChargeCnt > NUM_CHARGE_MAX_SAMPLE)){
514 gBatCapacityChargeCnt = (NUM_CHARGE_MAX_SAMPLE - NUM_CHARGE_MID_SAMPLE);
516 if (bat->bat_capacity < 99){
522 #else // ·ÀÖ¹µç³ØÀÏ»¯ºó³öÏֳ岻ÂúµÄÇé¿ö£¬
523 if (capacity > bat->capacitytmp){
524 //¹ý³ÌÖÐÈç¹ûµçѹÓÐÔö³¤£¬¶¨Ê±Æ÷¸´Î»£¬·ÀÖ¹¶¨Ê±Æ÷Ä£Äâ³äµç±Èʵ¼Ê³äµç¿ì
525 bat->gBatCapacityChargeCnt = 0;
529 if ((bat->bat_capacity >= 85) &&((bat->gBatCapacityChargeCnt) > NUM_CHARGE_MAX_SAMPLE)){
530 bat->gBatCapacityChargeCnt = (NUM_CHARGE_MAX_SAMPLE - NUM_CHARGE_MID_SAMPLE);
532 if (bat->bat_capacity < 99){
543 //ûÓгäµçÂú¼ì²â½Å£¬³¤Ê±¼äÄÚµçѹÎޱ仯£¬¶¨Ê±Æ÷Ä£Äâ³äµç
544 if (capacity > bat->capacitytmp){
545 //¹ý³ÌÖÐÈç¹ûµçѹÓÐÔö³¤£¬¶¨Ê±Æ÷¸´Î»£¬·ÀÖ¹¶¨Ê±Æ÷Ä£Äâ³äµç±Èʵ¼Ê³äµç¿ì
546 bat->gBatCapacityChargeCnt = 0;
550 if ((bat->bat_capacity >= 85) &&(bat->gBatCapacityChargeCnt > NUM_CHARGE_MAX_SAMPLE)){
551 bat->gBatCapacityChargeCnt = (NUM_CHARGE_MAX_SAMPLE - NUM_CHARGE_MID_SAMPLE);
553 if (bat->bat_capacity < 99){
565 //·Åµçʱ,Ö»ÔÊÐíµçѹϽµ
566 if (capacity < bat->bat_capacity){
567 if (++(bat->gBatCapacityDisChargeCnt) >= NUM_DISCHARGE_MIN_SAMPLE){
568 bat->gBatCapacityDisChargeCnt = 0;
569 if (bat->bat_capacity > 0){
570 bat->bat_capacity-- ;
576 bat->gBatCapacityDisChargeCnt = 0;
578 bat->gBatCapacityChargeCnt = 0;
580 bat->capacitytmp = capacity;
583 //static int poweron_check = 0;
584 static void rk30_adc_battery_poweron_capacity_check(void)
587 int new_capacity, old_capacity;
589 new_capacity = gBatteryData->bat_capacity;
590 old_capacity = rk30_adc_battery_load_capacity();
591 if ((old_capacity <= 0) || (old_capacity >= 100)){
592 old_capacity = new_capacity;
595 if (gBatteryData->bat_status == POWER_SUPPLY_STATUS_FULL){
596 if (new_capacity > 80){
597 gBatteryData->bat_capacity = 100;
600 else if (gBatteryData->bat_status != POWER_SUPPLY_STATUS_NOT_CHARGING){
603 // //1£©³¤Ê±¼ä¹Ø»ú·ÅÖú󣬿ª»úºó¶ÁÈ¡µÄÈÝÁ¿Ô¶Ô¶´óÓÚʵ¼ÊÈÝÁ¿Ôõô°ì£¿
604 // //2£©Èç¹û²»ÕâÑù×ö£¬¶Ìʱ¼ä¹Ø»úÔÙ¿ª»ú£¬Ç°ºóÈÝÁ¿²»Ò»ÖÂÓÖ¸ÃÔõô°ì£¿
605 // //3£©Ò»ÏÂÄÇÖÖ·½Ê½ºÏÊÊ£¿
606 //gBatteryData->bat_capacity = new_capacity;
607 gBatteryData->bat_capacity = (new_capacity > old_capacity) ? new_capacity : old_capacity;
610 if(new_capacity > old_capacity + 50 )
611 gBatteryData->bat_capacity = new_capacity;
613 gBatteryData->bat_capacity = (new_capacity < old_capacity) ? new_capacity : old_capacity; //avoid the value of capacity increase
617 //printk("capacity = %d, new_capacity = %d, old_capacity = %d\n",gBatteryData->bat_capacity, new_capacity, old_capacity);
619 gBatteryData->bat_change = 1;
622 #if defined(CONFIG_BATTERY_RK30_USB_CHARGE)
623 static int rk30_adc_battery_get_usb_property(struct power_supply *psy,
624 enum power_supply_property psp,
625 union power_supply_propval *val)
627 charger_type_t charger;
628 charger = CHARGER_USB;
631 case POWER_SUPPLY_PROP_ONLINE:
632 if (psy->type == POWER_SUPPLY_TYPE_USB)
633 val->intval = get_msc_connect_flag();
634 printk("%s:%d\n",__FUNCTION__,val->intval);
645 static enum power_supply_property rk30_adc_battery_usb_props[] = {
647 POWER_SUPPLY_PROP_ONLINE,
650 static struct power_supply rk30_usb_supply =
653 .type = POWER_SUPPLY_TYPE_USB,
655 .get_property = rk30_adc_battery_get_usb_property,
657 .properties = rk30_adc_battery_usb_props,
658 .num_properties = ARRAY_SIZE(rk30_adc_battery_usb_props),
662 #if defined(CONFIG_BATTERY_RK30_AC_CHARGE)
663 static irqreturn_t rk30_adc_battery_dc_wakeup(int irq, void *dev_id)
665 queue_work(gBatteryData->wq, &gBatteryData->dcwakeup_work);
670 static int rk30_adc_battery_get_ac_property(struct power_supply *psy,
671 enum power_supply_property psp,
672 union power_supply_propval *val)
675 charger_type_t charger;
676 charger = CHARGER_USB;
678 case POWER_SUPPLY_PROP_ONLINE:
679 if (psy->type == POWER_SUPPLY_TYPE_MAINS)
681 if (rk30_adc_battery_get_charge_level(gBatteryData))
690 DBG("%s:%d\n",__FUNCTION__,val->intval);
701 static enum power_supply_property rk30_adc_battery_ac_props[] =
703 POWER_SUPPLY_PROP_ONLINE,
706 static struct power_supply rk30_ac_supply =
709 .type = POWER_SUPPLY_TYPE_MAINS,
711 .get_property = rk30_adc_battery_get_ac_property,
713 .properties = rk30_adc_battery_ac_props,
714 .num_properties = ARRAY_SIZE(rk30_adc_battery_ac_props),
717 static void rk30_adc_battery_dcdet_delaywork(struct work_struct *work)
720 struct rk30_adc_battery_platform_data *pdata;
724 pdata = gBatteryData->pdata;
725 irq = gpio_to_irq(pdata->dc_det_pin);
726 irq_flag = gpio_get_value (pdata->dc_det_pin) ? IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING;
728 rk28_send_wakeup_key(); // wake up the system
731 ret = request_irq(irq, rk30_adc_battery_dc_wakeup, irq_flag, "ac_charge_irq", NULL);// reinitialize the DC irq
736 power_supply_changed(&rk30_ac_supply);
738 gBatteryData->bat_status_cnt = 0; //the state of battery is change
745 static int rk30_adc_battery_get_status(struct rk30_adc_battery_data *bat)
747 return (bat->bat_status);
750 static int rk30_adc_battery_get_health(struct rk30_adc_battery_data *bat)
752 return POWER_SUPPLY_HEALTH_GOOD;
755 static int rk30_adc_battery_get_present(struct rk30_adc_battery_data *bat)
757 return (bat->bat_voltage < BATT_MAX_VOL_VALUE) ? 0 : 1;
760 static int rk30_adc_battery_get_voltage(struct rk30_adc_battery_data *bat)
762 return (bat->bat_voltage );
765 static int rk30_adc_battery_get_capacity(struct rk30_adc_battery_data *bat)
767 return (bat->bat_capacity);
770 static int rk30_adc_battery_get_property(struct power_supply *psy,
771 enum power_supply_property psp,
772 union power_supply_propval *val)
777 case POWER_SUPPLY_PROP_STATUS:
778 val->intval = rk30_adc_battery_get_status(gBatteryData);
779 DBG("gBatStatus=%d\n",val->intval);
781 case POWER_SUPPLY_PROP_HEALTH:
782 val->intval = rk30_adc_battery_get_health(gBatteryData);
783 DBG("gBatHealth=%d\n",val->intval);
785 case POWER_SUPPLY_PROP_PRESENT:
786 val->intval = rk30_adc_battery_get_present(gBatteryData);
787 DBG("gBatPresent=%d\n",val->intval);
789 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
790 val ->intval = rk30_adc_battery_get_voltage(gBatteryData);
791 DBG("gBatVoltage=%d\n",val->intval);
793 // case POWER_SUPPLY_PROP_CURRENT_NOW:
794 // val->intval = 1100;
796 case POWER_SUPPLY_PROP_CAPACITY:
797 val->intval = rk30_adc_battery_get_capacity(gBatteryData);
798 DBG("gBatCapacity=%d%%\n",val->intval);
800 case POWER_SUPPLY_PROP_TECHNOLOGY:
801 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
803 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
804 val->intval = BATT_MAX_VOL_VALUE;
806 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
807 val->intval = BATT_ZERO_VOL_VALUE;
817 static enum power_supply_property rk30_adc_battery_props[] = {
819 POWER_SUPPLY_PROP_STATUS,
820 POWER_SUPPLY_PROP_HEALTH,
821 POWER_SUPPLY_PROP_PRESENT,
822 POWER_SUPPLY_PROP_VOLTAGE_NOW,
823 // POWER_SUPPLY_PROP_CURRENT_NOW,
824 POWER_SUPPLY_PROP_TECHNOLOGY,
825 POWER_SUPPLY_PROP_CAPACITY,
826 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
827 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
830 static struct power_supply rk30_battery_supply =
833 .type = POWER_SUPPLY_TYPE_BATTERY,
835 .get_property = rk30_adc_battery_get_property,
837 .properties = rk30_adc_battery_props,
838 .num_properties = ARRAY_SIZE(rk30_adc_battery_props),
842 static void rk30_adc_battery_resume_check(void)
846 int new_capacity, old_capacity;
847 struct rk30_adc_battery_data *bat = gBatteryData;
849 bat->old_charge_level = -1;
850 pSamples = bat->adc_samples;
852 adc_sync_read(bat->client); //start adc sample
853 level = oldlevel = rk30_adc_battery_status_samples(bat);//init charge status
855 for (i = 0; i < NUM_VOLTAGE_SAMPLE; i++) { //0.3 s
858 rk30_adc_battery_voltage_samples(bat); //get voltage
859 level = rk30_adc_battery_status_samples(bat); //check charge status
860 if (oldlevel != level){
861 oldlevel = level; //if charge status changed, reset sample
865 new_capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage);
866 old_capacity =gBatteryData-> suspend_capacity;
868 if (bat->bat_status != POWER_SUPPLY_STATUS_NOT_CHARGING){
870 bat->bat_capacity = (new_capacity > old_capacity) ? new_capacity : old_capacity;
873 bat->bat_capacity = (new_capacity < old_capacity) ? new_capacity : old_capacity; // aviod the value of capacity increase dicharge
878 static int rk30_adc_battery_suspend(struct platform_device *dev, pm_message_t state)
881 gBatteryData->suspend_capacity = gBatteryData->bat_capacity;
882 cancel_delayed_work(&gBatteryData->delay_work);
884 if( gBatteryData->pdata->batt_low_pin != INVALID_GPIO){
886 irq = gpio_to_irq(gBatteryData->pdata->batt_low_pin);
888 enable_irq_wake(irq);
894 static int rk30_adc_battery_resume(struct platform_device *dev)
897 gBatteryData->resume = true;
898 queue_delayed_work(gBatteryData->wq, &gBatteryData->delay_work, msecs_to_jiffies(100));
899 if( gBatteryData->pdata->batt_low_pin != INVALID_GPIO){
901 irq = gpio_to_irq(gBatteryData->pdata->batt_low_pin);
902 disable_irq_wake(irq);
908 #define rk30_adc_battery_suspend NULL
909 #define rk30_adc_battery_resume NULL
913 unsigned long AdcTestCnt = 0;
914 static void rk30_adc_battery_timer_work(struct work_struct *work)
917 if (gBatteryData->resume) {
918 rk30_adc_battery_resume_check();
919 gBatteryData->resume = false;
924 rk30_adc_battery_status_samples(gBatteryData);
926 if (gBatteryData->poweron_check){
927 gBatteryData->poweron_check = 0;
928 rk30_adc_battery_poweron_capacity_check();
931 rk30_adc_battery_voltage_samples(gBatteryData);
932 rk30_adc_battery_capacity_samples(gBatteryData);
934 if( 1 == rk30_adc_battery_get_charge_level(gBatteryData)){ // charge
935 if(0 == gBatteryData->status_lock ){
936 wake_lock(&batt_wake_lock); //lock
937 gBatteryData->status_lock = 1;
941 if(1 == gBatteryData->status_lock ){
942 wake_unlock(&batt_wake_lock); //unlock
943 gBatteryData->status_lock = 0;
949 /*update battery parameter after adc and capacity has been changed*/
950 if(gBatteryData->bat_change){
951 gBatteryData->bat_change = 0;
952 rk30_adc_battery_put_capacity(gBatteryData->bat_capacity);
953 power_supply_changed(&rk30_battery_supply);
956 if (rk30_battery_dbg_level){
957 if (++AdcTestCnt >= 2)
961 printk("Status = %d, RealAdcVal = %d, RealVol = %d,gBatVol = %d, gBatCap = %d, RealCapacity = %d, dischargecnt = %d, chargecnt = %d\n",
962 gBatteryData->bat_status, gBatteryData->adc_val, adc_to_voltage(gBatteryData->adc_val),
963 gBatteryData->bat_voltage, gBatteryData->bat_capacity, gBatteryData->capacitytmp, gBatteryData->gBatCapacityDisChargeCnt,gBatteryData-> gBatCapacityChargeCnt);
967 queue_delayed_work(gBatteryData->wq, &gBatteryData->delay_work, msecs_to_jiffies(TIMER_MS_COUNTS));
972 static int rk30_adc_battery_io_init(struct rk30_adc_battery_platform_data *pdata)
976 if (pdata->io_init) {
981 if (pdata->charge_set_pin != INVALID_GPIO){
982 ret = gpio_request(pdata->charge_set_pin, NULL);
984 printk("failed to request dc_det gpio\n");
987 gpio_direction_output(pdata->charge_set_pin, 1 - pdata->charge_set_level);
990 //dc charge detect pin
991 if (pdata->dc_det_pin != INVALID_GPIO){
992 ret = gpio_request(pdata->dc_det_pin, NULL);
994 printk("failed to request dc_det gpio\n");
998 gpio_pull_updown(pdata->dc_det_pin, GPIOPullUp);//important
999 ret = gpio_direction_input(pdata->dc_det_pin);
1001 printk("failed to set gpio dc_det input\n");
1007 if (pdata->charge_ok_pin != INVALID_GPIO){
1008 ret = gpio_request(pdata->charge_ok_pin, NULL);
1010 printk("failed to request charge_ok gpio\n");
1014 gpio_pull_updown(pdata->charge_ok_pin, GPIOPullUp);//important
1015 ret = gpio_direction_input(pdata->charge_ok_pin);
1017 printk("failed to set gpio charge_ok input\n");
1022 if( pdata->batt_low_pin != INVALID_GPIO){
1023 ret = gpio_request(pdata->batt_low_pin, NULL);
1025 printk("failed to request batt_low_pin gpio\n");
1029 gpio_pull_updown(pdata->batt_low_pin, GPIOPullUp);
1030 ret = gpio_direction_input(pdata->batt_low_pin);
1032 printk("failed to set gpio batt_low_pin input\n");
1042 //extern void kernel_power_off(void);
1043 static void rk30_adc_battery_check(struct rk30_adc_battery_data *bat)
1047 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
1048 //printk("%s--%d:\n",__FUNCTION__,__LINE__);
1050 bat->old_charge_level = -1;
1051 bat->capacitytmp = 0;
1052 bat->suspend_capacity = 0;
1054 pSamples = bat->adc_samples;
1056 adc_sync_read(bat->client); //start adc sample
1057 level = oldlevel = rk30_adc_battery_status_samples(bat);//init charge status
1059 bat->full_times = 0;
1060 for (i = 0; i < NUM_VOLTAGE_SAMPLE; i++){ //0.3 s
1062 rk30_adc_battery_voltage_samples(bat); //get voltage
1063 //level = rk30_adc_battery_status_samples(bat); //check charge status
1064 level = rk30_adc_battery_get_charge_level(bat);
1066 if (oldlevel != level){
1067 oldlevel = level; //if charge status changed, reset sample
1072 bat->bat_capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage); //init bat_capacity
1075 bat->bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
1076 if (rk30_adc_battery_get_charge_level(bat)){
1077 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
1079 if (pdata->charge_ok_pin != INVALID_GPIO){
1080 if (gpio_get_value(pdata->charge_ok_pin) == pdata->charge_ok_level){
1081 bat->bat_status = POWER_SUPPLY_STATUS_FULL;
1082 bat->bat_capacity = 100;
1090 rk30_adc_battery_poweron_capacity_check();
1092 gBatteryData->poweron_check = 1;
1094 gBatteryData->poweron_check = 0;
1096 /*******************************************
1097 //¿ª»ú²ÉÑùµ½µÄµçѹºÍÉϴιػú±£´æµçѹÏà²î½Ï´ó£¬Ôõô´¦Àí£¿
1098 if (bat->bat_capacity > old_capacity)
1100 if ((bat->bat_capacity - old_capacity) > 20)
1105 else if (bat->bat_capacity < old_capacity)
1107 if ((old_capacity > bat->bat_capacity) > 20)
1112 *********************************************/
1113 if (bat->bat_capacity == 0) bat->bat_capacity = 1;
1117 if ((bat->bat_voltage <= batt_table[0].dis_charge_vol+ 50)&&(bat->bat_status != POWER_SUPPLY_STATUS_CHARGING)){
1123 static void rk30_adc_battery_callback(struct adc_client *client, void *param, int result)
1126 struct rk30_adc_battery_data *info = container_of(client, struct rk30_adc_battery_data,
1128 info->adc_val = result;
1131 pr_bat("adc_battery_callback resule < 0 , the value ");
1135 gBatteryData->adc_val = result;
1136 pr_bat("result = %d, gBatteryData->adc_val = %d\n", result, gBatteryData->adc_val );
1142 static void rk30_adc_battery_lowerpower_delaywork(struct work_struct *work)
1145 if( gBatteryData->pdata->batt_low_pin != INVALID_GPIO){
1146 irq = gpio_to_irq(gBatteryData->pdata->batt_low_pin);
1150 printk("lowerpower\n");
1151 rk28_send_wakeup_key(); // wake up the system
1156 static irqreturn_t rk30_adc_battery_low_wakeup(int irq,void *dev_id)
1158 queue_work(gBatteryData->wq, &gBatteryData->lowerpower_work);
1164 static int rk30_adc_battery_probe(struct platform_device *pdev)
1169 struct adc_client *client;
1170 struct rk30_adc_battery_data *data;
1171 struct rk30_adc_battery_platform_data *pdata = pdev->dev.platform_data;
1173 data = kzalloc(sizeof(*data), GFP_KERNEL);
1176 goto err_data_alloc_failed;
1178 gBatteryData = data;
1180 platform_set_drvdata(pdev, data);
1182 data->pdata = pdata;
1183 data->status_lock = 0;
1184 ret = rk30_adc_battery_io_init(pdata);
1189 memset(data->adc_samples, 0, sizeof(int)*(NUM_VOLTAGE_SAMPLE + 2));
1191 //register adc for battery sample
1192 client = adc_register(0, rk30_adc_battery_callback, NULL); //pdata->adc_channel = ani0
1194 goto err_adc_register_failed;
1197 data->client = client;
1198 data->adc_val = adc_sync_read(client);
1200 ret = power_supply_register(&pdev->dev, &rk30_battery_supply);
1202 printk(KERN_INFO "fail to battery power_supply_register\n");
1203 goto err_battery_failed;
1207 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1208 ret = power_supply_register(&pdev->dev, &rk30_usb_supply);
1210 printk(KERN_INFO "fail to usb power_supply_register\n");
1211 goto err_usb_failed;
1214 wake_lock_init(&batt_wake_lock, WAKE_LOCK_SUSPEND, "batt_lock");
1216 data->wq = create_singlethread_workqueue("adc_battd");
1217 INIT_DELAYED_WORK(&data->delay_work, rk30_adc_battery_timer_work);
1218 //Power on Battery detect
1219 rk30_adc_battery_check(data);
1220 queue_delayed_work(data->wq, &data->delay_work, msecs_to_jiffies(TIMER_MS_COUNTS));
1222 #if defined (CONFIG_BATTERY_RK30_AC_CHARGE)
1223 ret = power_supply_register(&pdev->dev, &rk30_ac_supply);
1225 printk(KERN_INFO "fail to ac power_supply_register\n");
1228 //init dc dectet irq & delay work
1229 if (pdata->dc_det_pin != INVALID_GPIO){
1230 INIT_WORK(&data->dcwakeup_work, rk30_adc_battery_dcdet_delaywork);
1232 irq = gpio_to_irq(pdata->dc_det_pin);
1233 irq_flag = gpio_get_value (pdata->dc_det_pin) ? IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING;
1234 ret = request_irq(irq, rk30_adc_battery_dc_wakeup, irq_flag, "ac_charge_irq", NULL);
1236 printk("failed to request dc det irq\n");
1237 goto err_dcirq_failed;
1239 enable_irq_wake(irq);
1245 // batt low irq lowerpower_work
1246 if( pdata->batt_low_pin != INVALID_GPIO){
1247 INIT_WORK(&data->lowerpower_work, rk30_adc_battery_lowerpower_delaywork);
1249 irq = gpio_to_irq(pdata->batt_low_pin);
1250 ret = request_irq(irq, rk30_adc_battery_low_wakeup, IRQF_TRIGGER_LOW, "batt_low_irq", NULL);
1253 printk("failed to request batt_low_irq irq\n");
1254 goto err_lowpowerirq_failed;
1261 printk(KERN_INFO "rk30_adc_battery: driver initialized\n");
1265 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1267 power_supply_unregister(&rk30_usb_supply);
1271 #if defined (CONFIG_BATTERY_RK30_AC_CHARGE)
1272 power_supply_unregister(&rk30_ac_supply);
1276 power_supply_unregister(&rk30_battery_supply);
1279 free_irq(gpio_to_irq(pdata->dc_det_pin), data);
1281 err_lowpowerirq_failed:
1282 free_irq(gpio_to_irq(pdata->batt_low_pin), data);
1284 err_adc_register_failed:
1286 err_data_alloc_failed:
1289 printk("rk30_adc_battery: error!\n");
1294 static int rk30_adc_battery_remove(struct platform_device *pdev)
1296 struct rk30_adc_battery_data *data = platform_get_drvdata(pdev);
1297 struct rk30_adc_battery_platform_data *pdata = pdev->dev.platform_data;
1299 cancel_delayed_work(&gBatteryData->delay_work);
1300 #if defined(CONFIG_BATTERY_RK30_USB_CHARGE)
1301 power_supply_unregister(&rk30_usb_supply);
1303 #if defined(CONFIG_BATTERY_RK30_AC_CHARGE)
1304 power_supply_unregister(&rk30_ac_supply);
1306 power_supply_unregister(&rk30_battery_supply);
1308 free_irq(gpio_to_irq(pdata->dc_det_pin), data);
1315 static struct platform_driver rk30_adc_battery_driver = {
1316 .probe = rk30_adc_battery_probe,
1317 .remove = rk30_adc_battery_remove,
1318 .suspend = rk30_adc_battery_suspend,
1319 .resume = rk30_adc_battery_resume,
1321 .name = "rk30-battery",
1322 .owner = THIS_MODULE,
1326 static int __init rk30_adc_battery_init(void)
1328 return platform_driver_register(&rk30_adc_battery_driver);
1331 static void __exit rk30_adc_battery_exit(void)
1333 platform_driver_unregister(&rk30_adc_battery_driver);
1336 subsys_initcall(rk30_adc_battery_init);//subsys_initcall(rk30_adc_battery_init);
1337 module_exit(rk30_adc_battery_exit);
1339 MODULE_DESCRIPTION("Battery detect driver for the rk30");
1340 MODULE_AUTHOR("luowei lw@rock-chips.com");
1341 MODULE_LICENSE("GPL");