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>
39 #include <linux/string.h>
40 #include <linux/init.h>
41 #include <linux/earlysuspend.h>
42 #include <linux/suspend.h>
43 #ifdef CONFIG_EARLYSUSPEND
44 /* kernel/power/earlysuspend.c */
45 extern suspend_state_t get_suspend_state(void);
48 static int rk30_battery_dbg_level = 0;
49 module_param_named(dbg_level, rk30_battery_dbg_level, int, 0644);
50 #define DBG( args...) \
52 if (rk30_battery_dbg_level) { \
57 #define TIMER_MS_COUNTS 1000
58 #define SLOPE_SECOND_COUNTS 15
59 #define DISCHARGE_MIN_SECOND 45
60 #define CHARGE_MIN_SECOND 45
61 #define CHARGE_MID_SECOND 90
62 #define CHARGE_MAX_SECOND 250
63 #define CHARGE_FULL_DELAY_TIMES 10
64 #define USBCHARGE_IDENTIFY_TIMES 5
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)
72 #define NUM_USBCHARGE_IDENTIFY_TIMES ((USBCHARGE_IDENTIFY_TIMES * 1000) / TIMER_MS_COUNTS)
74 #define CHARGE_IS_OK 1
75 #define INVALID_CHARGE_CHECK -1
77 #if defined(CONFIG_ARCH_RK3066B)
78 #define BAT_DEFINE_VALUE 1800
79 #elif defined(CONFIG_ARCH_RK2928)
80 #define BAT_DEFINE_VALUE 3300
82 #define BAT_DEFINE_VALUE 2500
86 #define BATT_FILENAME "/data/bat_last_capacity.dat"
92 int battery_dbg_level = 0;
93 int battery_test_flag = 0;
94 int gVoltageCnt = 3400;
95 int gDoubleVoltageCnt = 6800;
96 unsigned long gSecondsCnt = 0;
97 char gDischargeFlag[3] = {"on "};
100 #ifdef CONFIG_BATTERY_RK30_VOL3V8
101 #define BATT_MAX_VOL_VALUE 4120 //Full charge volate
102 #define BATT_ZERO_VOL_VALUE 3500 //power down voltage
103 #define BATT_NOMAL_VOL_VALUE 3800
105 static int batt_table[2*BATT_NUM+6] =
107 0x4B434F52,0x7461625F,0x79726574,0,100,100,
108 3496, 3548, 3599, 3626, 3655, 3697, 3751, 3812, 3877, 3949, 4030, //discharge
109 3540, 3785, 3842, 3861, 3915, 3980, 4041, 4135, 4169, 4175, 4185 //charge
111 #define adc_to_voltage(adc_val) ((adc_val * BAT_DEFINE_VALUE * (batt_table[4] +batt_table[5])) / (1024 *batt_table[5]))
113 #define BATT_MAX_VOL_VALUE 8284 //Full charge voltage
114 #define BATT_ZERO_VOL_VALUE 6800 // power down voltage
115 #define BATT_NOMAL_VOL_VALUE 7600
118 static int batt_table[2*BATT_NUM+6] =
120 0x4B434F52,0x7461625F,0x79726574,1,300,100,
121 6800, 7242, 7332, 7404, 7470, 7520, 7610, 7744, 7848, 8016, 8284,//discharge
122 7630, 7754, 7852, 7908, 7956, 8024, 8112, 8220, 8306, 8318, 8328//charge
124 #define adc_to_voltage(adc_val) ((adc_val * BAT_DEFINE_VALUE * (batt_table[4] +batt_table[5])) / (1024 *batt_table[5]))
131 /********************************************************************************/
138 BATTERY_CAPACITY = 3,
139 BATTERY_AC_ONLINE = 4,
140 BATTERY_STATUS_CHANGED = 5,
141 AC_STATUS_CHANGED = 6,
142 BATTERY_INT_STATUS = 7,
143 BATTERY_INT_ENABLE = 8,
154 struct rk30_adc_battery_data {
157 //struct timer_list timer;
158 struct workqueue_struct *wq;
159 struct delayed_work delay_work;
160 struct work_struct dcwakeup_work;
161 struct work_struct lowerpower_work;
164 struct rk30_adc_battery_platform_data *pdata;
166 struct adc_client *client;
168 int adc_samples[NUM_VOLTAGE_SAMPLE+2];
178 int old_charge_level;
180 int gBatCapacityDisChargeCnt;
181 int gBatCapacityChargeCnt;
182 int gBatCapacityacChargeCnt;
183 int gBatCapacityusbChargeCnt ;
184 int gBatCapacityusbdisChargeCnt;
186 int suspend_capacity;
187 int gBatUsbChargeCnt;
190 struct power_supply bat;
191 struct power_supply usb;
192 struct power_supply ac;
193 struct power_supply bk_bat;
201 int charge_source_now;
202 int charge_soure_old;
203 int charge_start_capacity;
204 int charge_start_voltage;
205 int start_voltage_status;
206 int charge_up_proprotion;
207 int charge_down_proportion;
208 unsigned long suspend_time;
209 unsigned long resume_time;
212 int charge_full_flag;
216 static struct rk30_adc_battery_data *gBatteryData;
217 static struct wake_lock batt_wake_lock;
218 static struct wake_lock charge_display_lock;
219 int system_lowerpower = 0;
221 extern int dwc_vbus_status(void);
222 extern int get_gadget_connect_flag(void);
223 extern int dwc_otg_check_dpdm(void);
224 static int is_charge_ok(struct rk30_adc_battery_data *bat);
225 static void rk30_adc_battery_voltage_samples(struct rk30_adc_battery_data *bat);
229 //#define BAT_ADC_TABLE_LEN 11
230 static ssize_t bat_param_read(struct device *dev,struct device_attribute *attr, char *buf)
233 for(i=0;i<BATT_NUM;i++)
234 printk("i=%d batt_table=%d\n",i+6,batt_table[i+6]);
236 for(i=0;i<BATT_NUM;i++)
237 printk("i=%d batt_table=%d\n",i+17,batt_table[i+17]);
240 DEVICE_ATTR(batparam, 0664, bat_param_read,NULL);
243 static ssize_t rkbatt_show_debug_attrs(struct device *dev,
244 struct device_attribute *attr, char *buf)
246 return sprintf(buf, "%d\n", battery_dbg_level);
249 static ssize_t rkbatt_restore_debug_attrs(struct device *dev,
250 struct device_attribute *attr, const char *buf, size_t size)
254 sscanf(buf, "%d", &liTmp);
256 if(liTmp != 0 && liTmp != 1)
258 dev_err(dev, "rk29adc_restore_debug_attrs err\n");
262 battery_dbg_level = liTmp;
267 static ssize_t rkbatt_show_state_attrs(struct device *dev,
268 struct device_attribute *attr, char *buf)
270 // struct rk30_adc_battery_platform_data *pdata = gBatteryData->pdata;
271 int charge_ok_value =0 ;
272 charge_ok_value = is_charge_ok(gBatteryData) ;
275 "gBatVol=%d,gBatCap=%d,charge_ok=%d,%s\n",
276 gBatteryData->bat_voltage,gBatteryData->bat_capacity,
277 charge_ok_value,gDischargeFlag);
280 static ssize_t rkbatt_restore_state_attrs(struct device *dev,
281 struct device_attribute *attr, const char *buf, size_t size)
286 static ssize_t rkbatt_show_value_attrs(struct device *dev,
287 struct device_attribute *attr, char *buf)
289 return sprintf(buf, "pull_up_res =%d,\npull_down_res=%d\n", batt_table[4],batt_table[5]);
292 static ssize_t rkbatt_restore_value_attrs(struct device *dev,
293 struct device_attribute *attr, const char *buf, size_t size)
298 sscanf(buf, "%d,%d", &liUp,&liDown);
300 if(liUp != 0 && liDown != 0)
302 batt_table[4] = liUp;
303 batt_table[5] = liDown;
308 static ssize_t rkbatt_show_flag_attrs(struct device *dev,
309 struct device_attribute *attr, char *buf)
311 return sprintf(buf, "rk29_battery_test_flag=%d\n", battery_test_flag);
313 static ssize_t rkbatt_restore_flag_attrs(struct device *dev,
314 struct device_attribute *attr, const char *buf, size_t size)
318 sscanf(buf, "%d", &liFlag);
322 battery_test_flag = liFlag;
326 static struct device_attribute rkbatt_attrs[] = {
327 __ATTR(state, 0664, rkbatt_show_state_attrs, rkbatt_restore_state_attrs),
328 __ATTR(debug, 0664, rkbatt_show_debug_attrs, rkbatt_restore_debug_attrs),
329 __ATTR(value, 0666, rkbatt_show_value_attrs, rkbatt_restore_value_attrs),
330 __ATTR(flag, 0666, rkbatt_show_flag_attrs, rkbatt_restore_flag_attrs),
333 static int create_sysfs_interfaces(struct device *dev)
336 for (liTmep = 0; liTmep < ARRAY_SIZE(rkbatt_attrs); liTmep++) {
338 if (device_create_file(dev, rkbatt_attrs + liTmep)){
346 for ( ; liTmep >= 0; liTmep--){
347 device_remove_file(dev, rkbatt_attrs + liTmep);
350 dev_err(dev, "%s:Unable to create sysfs interface\n", __func__);
357 static int rk30_adc_battery_load_capacity(void)
360 int* p = (int *)value;
361 long fd = sys_open(BATT_FILENAME,O_RDONLY,0);
364 DBG("rk30_adc_battery_load_capacity: open file /data/bat_last_capacity.dat failed\n");
368 sys_read(fd,(char __user *)value,4);
374 static void rk30_adc_battery_put_capacity(int loadcapacity)
377 int* p = (int *)value;
378 long fd = sys_open(BATT_FILENAME,O_CREAT | O_RDWR,0);
381 DBG("rk30_adc_battery_put_capacity: open file /data/bat_last_capacity.dat failed\n");
386 sys_write(fd, (const char __user *)value, 4);
390 static void rk_start_charge(struct rk30_adc_battery_data *bat)
392 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
394 if (pdata->charge_set_pin != INVALID_GPIO){
395 gpio_direction_output(pdata->charge_set_pin, pdata->charge_set_level);
399 static void rk_stop_charge(struct rk30_adc_battery_data *bat)
401 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
403 if (pdata->charge_set_pin != INVALID_GPIO){
404 gpio_direction_output(pdata->charge_set_pin, 1 - pdata->charge_set_level);
408 static int get_ac_status(struct rk30_adc_battery_data *bat){
410 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
412 if (pdata->dc_det_pin != INVALID_GPIO){
413 if (gpio_get_value (pdata->dc_det_pin) == pdata->dc_det_level){
419 if(pdata->is_dc_charging){
420 status = pdata->is_dc_charging();
426 // state of charge --- charge-display
427 static int get_usb_status1(struct rk30_adc_battery_data *bat){
430 //state of charge ----running
431 static int get_usb_status2(struct rk30_adc_battery_data *bat){
433 // struct rk30_adc_battery_platform_data *pdata = bat->pdata;
434 int usb_status = 0; // 0--dischage ,1 ---usb charge, 2 ---ac charge
436 if (1 == dwc_vbus_status()) {
437 if (0 == get_gadget_connect_flag()){
438 if (++bat->gBatUsbChargeCnt >= NUM_USBCHARGE_IDENTIFY_TIMES){
439 bat->gBatUsbChargeCnt = NUM_USBCHARGE_IDENTIFY_TIMES + 1;
440 usb_status = 2; // non-standard AC charger
441 if(bat ->pdata ->control_usb_charging)
442 bat ->pdata ->control_usb_charging(1);
446 usb_status = 1; // connect to pc
447 if(bat ->pdata ->control_usb_charging)
448 bat ->pdata ->control_usb_charging(0);
453 bat->gBatUsbChargeCnt = 0;
454 if (2 == dwc_vbus_status()) {
455 usb_status = 2; //standard AC charger
457 if(bat ->pdata ->control_usb_charging)
458 bat ->pdata ->control_usb_charging(1);
469 static int rk_battery_get_status(struct rk30_adc_battery_data *bat)
472 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
473 int ac_ac_charging = 0, usb_ac_charging = 0;
476 #if defined (CONFIG_BATTERY_RK30_AC_CHARGE)
477 ac_ac_charging = get_ac_status(bat);
478 if(1 == ac_ac_charging)
482 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
483 if (strstr(saved_command_line,"charger")){
484 wake_lock(&charge_display_lock); //lock
485 if( bat->pdata->usb_det_pin != INVALID_GPIO ){
486 if( gpio_get_value(bat->pdata->usb_det_pin)== bat->pdata->usb_det_level){
487 if(( 1 == usb_ac_charging )||( 1 == ac_ac_charging ))
488 bat -> ac_charging = 1;
489 if(( 1 == bat->usb_charging)||(1 == bat ->ac_charging))
493 if(( 0 == usb_ac_charging )&&( 0 == ac_ac_charging ))
494 bat -> ac_charging = 0;
496 bat->ac_charging = 1;
498 bat->usb_charging = 0;
499 if(1 == bat->ac_charging)
507 if(dwc_otg_check_dpdm() == 0){
508 bat->usb_charging = 0;
510 }else if(dwc_otg_check_dpdm() == 1){
511 bat->usb_charging = 1;
512 if(bat -> pdata ->control_usb_charging)
513 bat -> pdata ->control_usb_charging(0);
514 }else if(dwc_otg_check_dpdm() == 2){
515 bat->usb_charging = 0;
517 if(bat -> pdata ->control_usb_charging)
518 bat -> pdata ->control_usb_charging(1);
520 if((1 == usb_ac_charging)||(1 == ac_ac_charging))
521 bat ->ac_charging = 1;
523 bat ->ac_charging = 0;
525 if(( 0 == bat ->ac_charging )&&(0 == bat->usb_charging )){
536 usb_ac_charging = get_usb_status2(bat); //0 --discharge, 1---usb charging,2----AC charging;
537 if(1 == usb_ac_charging)
538 bat->usb_charging = 1;
540 bat->usb_charging = 0;
543 if((usb_ac_charging == 2)||(ac_ac_charging == 1))
544 bat -> ac_charging = 1;
546 bat -> ac_charging = 0;
548 if((bat->usb_charging == 1)||(bat ->ac_charging ==1))
551 if(1 == bat->ac_charging )
552 bat->charge_source_now = 1; //ac charge
553 else if( 1 == bat->usb_charging){
554 bat->charge_source_now = 2; //ac charge
556 bat->charge_soure_old =0;
557 bat->charge_source_now=0;
559 if(bat->charge_source_now != bat->charge_soure_old){
561 for (i = 0; i < NUM_VOLTAGE_SAMPLE; i++){ //0.3 s
562 msleep(1); //mdelay --- > msleep
563 rk30_adc_battery_voltage_samples(bat); //get new voltage
566 bat->charge_soure_old = bat->charge_source_now;
569 DBG("ac_status=%d,usb_status=%d bat->bat_change = %d\n",bat -> ac_charging, bat->usb_charging ,bat->bat_change );
574 static int is_charge_ok(struct rk30_adc_battery_data *bat)
576 int charge_is_ok = 0;
577 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
579 if( 1 != bat->charge_level)
582 if((pdata->charge_ok_pin == INVALID_GPIO)&& ( pdata->charging_ok == NULL))
585 if (pdata->charge_ok_pin != INVALID_GPIO){
586 if (gpio_get_value(pdata->charge_ok_pin) == pdata->charge_ok_level){
589 }else if( pdata->charging_ok){
591 charge_is_ok = pdata->charging_ok();
600 static int rk30_adc_battery_status_samples(struct rk30_adc_battery_data *bat)
604 charge_level = bat ->charge_level;//rk_battery_get_status(bat);
606 if (charge_level != bat->old_charge_level){
607 bat->old_charge_level = charge_level;
611 rk_start_charge(bat);
617 bat->bat_status_cnt = 0;
619 if(( 1 == charge_level )&&(1 == bat->charge_full_flag) && (bat->bat_capacity < 90)){
620 rk_start_charge(bat); //recharge
621 if(bat->pdata->ctrl_charge_led != NULL)
622 bat->pdata->ctrl_charge_led(0);
624 }else if (charge_level) {
625 rk_start_charge(bat);
632 if(charge_level == 0){
634 bat->charge_full_flag = 0;
636 bat->bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
639 if( is_charge_ok(bat) == INVALID_CHARGE_CHECK){
640 if (bat->bat_capacity == 100){
641 if (bat->bat_status != POWER_SUPPLY_STATUS_FULL){
642 bat->bat_status = POWER_SUPPLY_STATUS_FULL;
644 bat->charge_full_flag = 1;
645 if(bat->pdata->ctrl_charge_led != NULL)
646 bat->pdata->ctrl_charge_led(1);
651 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
652 if(bat->pdata->ctrl_charge_led != NULL)
653 bat->pdata->ctrl_charge_led(0);
655 }else{ // pin of charge_ok_pin
656 if (is_charge_ok(bat) != CHARGE_IS_OK ){
659 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
663 if (bat->full_times >= NUM_CHARGE_FULL_DELAY_TIMES) {
664 bat->full_times = NUM_CHARGE_FULL_DELAY_TIMES + 1;
667 if ((bat->full_times >= NUM_CHARGE_FULL_DELAY_TIMES) && (bat->bat_capacity >= 99)){
668 if (bat->bat_status != POWER_SUPPLY_STATUS_FULL){
669 bat->bat_status = POWER_SUPPLY_STATUS_FULL;
671 bat->bat_capacity = 100;
676 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
684 static int rk_adc_voltage(struct rk30_adc_battery_data *bat, int value)
688 int ref_voltage; //reference_voltage
692 ref_voltage = bat ->pdata->reference_voltage;
693 pullup_res = bat ->pdata->pull_up_res;
694 pulldown_res = bat ->pdata->pull_down_res;
696 if(ref_voltage && pullup_res && pulldown_res){
698 voltage = ((value * ref_voltage * (pullup_res + pulldown_res)) / (1024 * pulldown_res));
701 voltage = adc_to_voltage(value);
708 static void rk_handle_ripple(struct rk30_adc_battery_data *bat, int status)
713 if (bat->pdata->use_board_table){
714 p_table = bat->pdata->board_batt_table;
717 if(bat->bat_voltage >= p_table[2*BATT_NUM +5]+ 10)
718 bat->bat_voltage = p_table[2*BATT_NUM +5] + 10;
719 else if(bat->bat_voltage <= p_table[BATT_NUM +6] - 10)
720 bat->bat_voltage = p_table[BATT_NUM +6] - 10;
723 if(bat->bat_voltage >= p_table[BATT_NUM +5]+ 10)
724 bat->bat_voltage = p_table[BATT_NUM +5] + 10;
725 else if(bat->bat_voltage <= p_table[6] - 10)
726 bat->bat_voltage = p_table[6] - 10;
732 //static int *pSamples;
733 static void rk30_adc_battery_voltage_samples(struct rk30_adc_battery_data *bat)
736 int i,*pStart = bat->adc_samples, num = 0;
737 int level = bat->charge_level;
740 value = bat->adc_val;
741 adc_async_read(bat->client);
743 *(bat->pSamples++) = rk_adc_voltage(bat,value);
745 bat->bat_status_cnt++;
746 if (bat->bat_status_cnt > NUM_VOLTAGE_SAMPLE) bat->bat_status_cnt = NUM_VOLTAGE_SAMPLE + 1;
748 num = bat->pSamples - pStart;
750 if (num >= NUM_VOLTAGE_SAMPLE){
751 bat ->pSamples = pStart;
752 num = NUM_VOLTAGE_SAMPLE;
757 for (i = 0; i < num; i++){
758 value += bat->adc_samples[i];
760 bat->bat_voltage = value / num;
763 if(battery_test_flag == 0)
765 if(0 == bat->pdata->use_board_table){
767 if(bat->bat_voltage >= batt_table[2*BATT_NUM +5]+ 10)
768 bat->bat_voltage = batt_table[2*BATT_NUM +5] + 10;
769 else if(bat->bat_voltage <= batt_table[BATT_NUM +6] - 10)
770 bat->bat_voltage = batt_table[BATT_NUM +6] - 10;
773 if(bat->bat_voltage >= batt_table[BATT_NUM +5]+ 10)
774 bat->bat_voltage = batt_table[BATT_NUM +5] + 10;
775 else if(bat->bat_voltage <= batt_table[6] - 10)
776 bat->bat_voltage = batt_table[6] - 10;
779 rk_handle_ripple(bat, level);
782 }else if(battery_test_flag == 2){
784 if(batt_table[3] == 0){
785 if(bat->bat_voltage < 3400){
786 if((get_seconds() - gSecondsCnt) > 30){
787 gSecondsCnt = get_seconds();
788 if((gVoltageCnt - bat->bat_voltage) > 15){
789 strncpy(gDischargeFlag, "off" ,3);
791 gVoltageCnt = bat->bat_voltage;
796 if(bat->bat_voltage < 3400){
797 bat->bat_voltage = 3400;
801 if(bat->bat_voltage < 6800){
802 if((get_seconds() - gSecondsCnt) > 30){
803 gSecondsCnt = get_seconds();
804 if((gDoubleVoltageCnt - bat->bat_voltage) > 30){
805 strncpy(gDischargeFlag, "off" ,3);
807 gDoubleVoltageCnt =bat->bat_voltage;
810 if(bat->bat_voltage < 6800){
811 bat->bat_voltage = 6800;
817 static int rk30_adc_battery_voltage_to_capacity(struct rk30_adc_battery_data *bat, int BatVoltage)
823 if (bat->pdata->use_board_table)
824 p = bat->pdata->board_batt_table;
828 if (1 == bat->charge_level){ //charge
829 if(0 == bat->start_voltage_status ){
830 if(BatVoltage >= (p[2*BATT_NUM +5])){
834 if(BatVoltage <= (p[BATT_NUM +6])){
838 for(i = BATT_NUM +6; i <2*BATT_NUM +5; i++){
840 if(((p[i]) <= BatVoltage) && (BatVoltage < (p[i+1]))){
842 capacity = (i-(BATT_NUM +6))*10 + ((BatVoltage - p[i]) * 10)/ (p[i+1]- p[i]);
851 DBG("start_voltage=%d,start_capacity =%d\n", bat->charge_start_voltage, bat->charge_start_capacity);
852 DBG("charge_down_proportion =%d,charge_up_proprotion=%d\n",bat ->charge_down_proportion,bat ->charge_up_proprotion);
853 if(BatVoltage >= (p[2*BATT_NUM +5])){
857 if(BatVoltage <= (p[BATT_NUM +6])){
861 if(BatVoltage <bat->charge_start_voltage){
862 for(i = BATT_NUM +6; i <2*BATT_NUM +5; i++)
863 if(((p[i]) <= BatVoltage) && (BatVoltage < (p[i+1]))){
864 if( p[i+1] < bat->charge_start_voltage ){
865 capacity =(i-(BATT_NUM +6))*(bat ->charge_down_proportion) + ((BatVoltage - p[i]) * bat ->charge_down_proportion)/ (p[i+1]- p[i]);
868 capacity = (i-(BATT_NUM +6))*(bat ->charge_down_proportion) + ((BatVoltage - p[i]) * bat ->charge_down_proportion)/ (bat->charge_start_voltage - p[i]);
876 if(BatVoltage > bat->charge_start_voltage){
877 for(i = BATT_NUM +6; i <2*BATT_NUM +5; i++)
878 if(((p[i]) <= BatVoltage) && (BatVoltage < (p[i+1]))){
879 if( p[i] > bat->charge_start_voltage ){
880 capacity = bat->charge_start_capacity + (i - (BATT_NUM +6)-bat->charge_start_capacity/10)*(bat ->charge_up_proprotion) + ((BatVoltage - p[i]) * bat ->charge_up_proprotion)/ (p[i+1]- p[i]);
883 capacity = bat->charge_start_capacity + (i - (BATT_NUM +6)-bat->charge_start_capacity/10)*(bat ->charge_up_proprotion) + ((BatVoltage - p[i]) * bat ->charge_up_proprotion)/ (p[i+1] - bat->charge_start_voltage );
890 if(BatVoltage == bat->charge_start_voltage)
891 capacity = bat ->charge_start_capacity;
901 if(BatVoltage >= (p[BATT_NUM +5])){
905 if(BatVoltage <= (p[6])){
909 for(i = 6; i < BATT_NUM +5; i++){
910 if(((p[i]) <= BatVoltage) && (BatVoltage < (p[i+1]))){
911 capacity = (i-6)*10+ ((BatVoltage - p[i]) *10 )/ (p[i+1]- p[i]) ;
922 DBG("real_voltage_to_capacity =%d\n" ,capacity);
926 static void rk_usb_charger(struct rk30_adc_battery_data *bat)
930 // struct rk30_adc_battery_platform_data *pdata = bat->pdata;
931 int timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE;
932 int timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE;
934 if((1 == bat ->charge_level)&&( 0 == bat ->start_voltage_status)){
935 bat ->charge_start_voltage = bat ->bat_voltage;
936 bat ->start_voltage_status = 1;
937 bat ->charge_start_capacity = bat ->bat_capacity;
938 bat ->charge_up_proprotion = (100 - bat ->charge_start_capacity)/10+1;
939 bat ->charge_down_proportion = bat ->charge_start_capacity/10+1;
942 capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage);
944 if (capacity > bat->bat_capacity){
945 if(capacity > bat->bat_capacity + 10 )
946 timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE -10; //5s
947 else if(capacity > bat->bat_capacity + 7 )
948 timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE -5; //10s
949 else if(capacity > bat->bat_capacity + 3 )
950 timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE - 2; // 13
951 if (++(bat->gBatCapacityusbChargeCnt) >= timer_of_charge_sample){
952 bat->gBatCapacityusbChargeCnt = 0;
953 if (bat->bat_capacity <= 99){
958 bat->gBatCapacityChargeCnt = 0;
959 bat ->gBatCapacityusbdisChargeCnt = 0;//get_suspend_state(void)
960 }else //if(( get_suspend_state() != PM_SUSPEND_MEM)&&(capacity < bat->bat_capacity)){
961 // if((gpio_get_value (bat->pdata->back_light_pin) == 1)&&(capacity < bat->bat_capacity)){
962 if((capacity < bat->bat_capacity)){
963 DBG("USB CHARGE DOWN\n");
965 // if (capacity < bat->bat_capacity){
967 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 40; // 13
968 }else if(capacity < 20){
969 if(capacity + 3 > bat->bat_capacity )
970 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -5; //5s
971 else if(capacity + 7 > bat->bat_capacity )
972 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -10; //10s
973 else if(capacity + 10> bat->bat_capacity )
974 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -25; // 13
976 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 35; // 13
978 if(capacity + 3 > bat->bat_capacity )
979 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -5; //5s
980 else if(capacity + 7 > bat->bat_capacity )
981 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -10; //10s
982 else if(capacity + 10> bat->bat_capacity )
983 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 15; // 13
985 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 20; // 13
988 if (++(bat->gBatCapacityusbdisChargeCnt) >= timer_of_discharge_sample){
989 bat->gBatCapacityusbdisChargeCnt = 0;
990 if (bat->bat_capacity > 0){
991 bat->bat_capacity-- ;
997 bat->gBatCapacityusbChargeCnt = 0;
1000 else //if(get_suspend_state() == PM_SUSPEND_MEM){
1001 //if(gpio_get_value (bat->pdata->back_light_pin) == 0){
1005 bat->gBatCapacityusbdisChargeCnt = 0;
1006 // (bat->gBatCapacityusbChargeCnt)++;
1007 if( is_charge_ok(bat) != INVALID_CHARGE_CHECK){
1008 if( is_charge_ok(bat) == CHARGE_IS_OK){
1010 if (++bat->gBatCapacityusbChargeCnt >= timer_of_charge_sample-30){
1011 bat->gBatCapacityusbChargeCnt = 0;
1012 if (bat->bat_capacity <= 99){
1013 bat->bat_capacity++;
1014 bat->bat_change = 1;
1018 if (capacity > bat->capacitytmp){
1019 bat->gBatCapacityChargeCnt = 0;
1022 if ((bat->bat_capacity >= 85) &&((bat->gBatCapacityChargeCnt) > NUM_CHARGE_MAX_SAMPLE)){
1023 bat->gBatCapacityChargeCnt = (NUM_CHARGE_MAX_SAMPLE - NUM_CHARGE_MID_SAMPLE);
1025 if (bat->bat_capacity < 99){
1026 bat->bat_capacity++;
1027 bat->bat_change = 1;
1035 if (capacity > bat->capacitytmp){
1036 bat->gBatCapacityChargeCnt = 0;
1038 if ((bat->bat_capacity >= 85) &&(bat->gBatCapacityusbChargeCnt > NUM_CHARGE_MAX_SAMPLE)){
1039 bat->gBatCapacityusbChargeCnt = (NUM_CHARGE_MAX_SAMPLE - NUM_CHARGE_MID_SAMPLE);
1040 if (bat->bat_capacity <= 99){
1041 bat->bat_capacity++;
1042 bat->bat_change = 1;
1049 bat->capacitytmp = capacity;
1052 static void rk_ac_charger(struct rk30_adc_battery_data *bat)
1055 int timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE;
1057 if((1 == bat->charge_level)&&( 0 == bat->start_voltage_status)){
1058 bat->charge_start_voltage = bat->bat_voltage;
1059 bat->start_voltage_status = 1;
1060 bat->charge_start_capacity = bat->bat_capacity;
1061 bat ->charge_up_proprotion = (100 - bat ->charge_start_capacity)/10+1;
1062 bat ->charge_down_proportion = bat ->charge_start_capacity/10+1;
1064 capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage);
1065 if (capacity > bat->bat_capacity){
1066 if(capacity > bat->bat_capacity + 10 )
1067 timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE -10; //5s
1068 else if(capacity > bat->bat_capacity + 7 )
1069 timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE -5; //10s
1070 else if(capacity > bat->bat_capacity + 3 )
1071 timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE - 2; // 13
1072 if (++(bat->gBatCapacityacChargeCnt) >= timer_of_charge_sample){
1073 bat->gBatCapacityacChargeCnt = 0;
1074 if (bat->bat_capacity <= 99){
1075 bat->bat_capacity++;
1076 bat->bat_change = 1;
1079 bat->gBatCapacityChargeCnt = 0;
1082 bat->gBatCapacityacChargeCnt = 0;
1083 (bat->gBatCapacityChargeCnt)++;
1084 if( is_charge_ok(bat) != INVALID_CHARGE_CHECK){
1085 if( is_charge_ok(bat) == CHARGE_IS_OK){
1086 if (bat->gBatCapacityChargeCnt >= timer_of_charge_sample){
1087 bat->gBatCapacityChargeCnt = 0;
1088 if (bat->bat_capacity < 99){
1089 bat->bat_capacity++;
1090 bat->bat_change = 1;
1094 if (capacity > bat->capacitytmp){
1095 bat->gBatCapacityChargeCnt = 0;
1099 if ((bat->bat_capacity >= 85) &&((bat->gBatCapacityChargeCnt) > NUM_CHARGE_MAX_SAMPLE)){
1100 bat->gBatCapacityChargeCnt = (NUM_CHARGE_MAX_SAMPLE - NUM_CHARGE_MID_SAMPLE);
1102 if (bat->bat_capacity < 99){
1103 bat->bat_capacity++;
1104 bat->bat_change = 1;
1111 if (capacity > bat->capacitytmp){
1112 bat->gBatCapacityChargeCnt = 0;
1116 if ((bat->bat_capacity >= 85) &&(bat->gBatCapacityChargeCnt > NUM_CHARGE_MAX_SAMPLE)){
1117 bat->gBatCapacityChargeCnt = (NUM_CHARGE_MAX_SAMPLE - NUM_CHARGE_MID_SAMPLE);
1119 if (bat->bat_capacity <= 99){
1120 bat->bat_capacity++;
1121 bat->bat_change = 1;
1129 bat->capacitytmp = capacity;
1131 static void rk_battery_charger(struct rk30_adc_battery_data *bat)
1135 int timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE;
1137 capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage);
1139 if (capacity < bat->bat_capacity){
1141 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 40; // 13
1142 }else if(capacity < 20){
1143 if(capacity + 3 > bat->bat_capacity )
1144 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -5; //5s
1145 else if(capacity + 7 > bat->bat_capacity )
1146 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -10; //10s
1147 else if(capacity + 10> bat->bat_capacity )
1148 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -25; // 13
1150 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 35; // 13
1152 if(capacity + 3 > bat->bat_capacity )
1153 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -5; //5s
1154 else if(capacity + 7 > bat->bat_capacity )
1155 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE -10; //10s
1156 else if(capacity + 10> bat->bat_capacity )
1157 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 15; // 13
1159 timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE - 20; // 13
1162 if (++(bat->gBatCapacityDisChargeCnt) >= timer_of_discharge_sample){
1163 bat->gBatCapacityDisChargeCnt = 0;
1164 if (bat->bat_capacity > 0){
1165 bat->bat_capacity-- ;
1166 bat->bat_change = 1;
1171 bat->gBatCapacityDisChargeCnt = 0;
1173 bat->gBatCapacityChargeCnt = 0;
1174 bat->gBatCapacityusbdisChargeCnt=0 ;
1175 bat->gBatCapacityusbChargeCnt =0;
1176 bat->gBatCapacityacChargeCnt = 0;
1177 bat->start_voltage_status = 0;
1179 bat->capacitytmp = capacity;
1185 static void rk30_adc_battery_capacity_samples(struct rk30_adc_battery_data *bat)
1187 // int capacity = 0;
1188 // int timer_of_charge_sample = NUM_CHARGE_MIN_SAMPLE;
1189 int timer_of_discharge_sample = NUM_CHARGE_MIN_SAMPLE;
1191 if (bat->bat_status_cnt < NUM_VOLTAGE_SAMPLE) {
1192 bat->gBatCapacityDisChargeCnt = 0;
1193 bat->gBatCapacityChargeCnt = 0;
1194 bat->gBatCapacityacChargeCnt = 0;
1198 if(1 == bat->charge_level){
1199 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1200 if(1 == bat->usb_charging)
1201 rk_usb_charger(bat);
1208 rk_battery_charger(bat);
1214 //static int poweron_check = 0;
1215 static void rk30_adc_battery_poweron_capacity_check(struct rk30_adc_battery_data *bat)
1218 int new_capacity, old_capacity;
1221 new_capacity = bat ->bat_capacity;
1222 //#if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1223 // if(dwc_vbus_status() != 0)
1224 // bat ->bat_status = POWER_SUPPLY_STATUS_CHARGING; // add for charging.
1228 old_capacity = rk30_adc_battery_load_capacity();
1229 if( old_capacity >= 0 ){
1235 if ((old_capacity < 0) || (old_capacity > 100)){
1236 old_capacity = new_capacity;
1239 if (bat ->bat_status == POWER_SUPPLY_STATUS_FULL){
1240 if (new_capacity > 80){
1241 bat ->bat_capacity = 100;
1244 else if (bat ->bat_status != POWER_SUPPLY_STATUS_NOT_CHARGING){
1247 if( bat ->pdata->is_reboot_charging == 1)
1248 bat ->bat_capacity = (old_capacity < 10) ?(old_capacity+2):old_capacity;
1250 bat ->bat_capacity = (new_capacity > old_capacity) ? new_capacity : old_capacity;
1252 if(new_capacity > old_capacity + 50 )
1253 bat ->bat_capacity = new_capacity;
1255 bat ->bat_capacity = (new_capacity < old_capacity) ? new_capacity : old_capacity; //avoid the value of capacity increase
1259 bat ->bat_change = 1;
1261 #define to_battery_usb_device_info(x) container_of((x), \
1262 struct rk30_adc_battery_data, usb);
1264 static int rk30_adc_battery_get_usb_property(struct power_supply *psy,
1265 enum power_supply_property psp,
1266 union power_supply_propval *val)
1268 struct rk30_adc_battery_data *bat= to_battery_usb_device_info(psy);
1271 case POWER_SUPPLY_PROP_ONLINE:
1272 if (psy->type == POWER_SUPPLY_TYPE_USB){
1273 val->intval = bat ->usb_charging;
1274 if( 1 == bat->charge_full_flag)
1288 static enum power_supply_property rk30_adc_battery_usb_props[] = {
1290 POWER_SUPPLY_PROP_ONLINE,
1293 static struct power_supply rk30_usb_supply =
1296 .type = POWER_SUPPLY_TYPE_USB,
1298 .get_property = rk30_adc_battery_get_usb_property,
1300 .properties = rk30_adc_battery_usb_props,
1301 .num_properties = ARRAY_SIZE(rk30_adc_battery_usb_props),
1304 static irqreturn_t rk30_adc_battery_dc_wakeup(int irq, void *dev_id)
1306 disable_irq_nosync(irq);
1307 queue_work(gBatteryData->wq, &gBatteryData->dcwakeup_work);
1311 #define to_battery_ac_device_info(x) container_of((x), \
1312 struct rk30_adc_battery_data, ac);
1314 static int rk30_adc_battery_get_ac_property(struct power_supply *psy,
1315 enum power_supply_property psp,
1316 union power_supply_propval *val)
1320 struct rk30_adc_battery_data *bat = to_battery_ac_device_info(psy);
1323 case POWER_SUPPLY_PROP_ONLINE:
1324 if (psy->type == POWER_SUPPLY_TYPE_MAINS){
1325 val->intval = bat ->ac_charging;
1326 if (strstr(saved_command_line,"charger") == NULL ){
1327 if( 1 == bat->charge_full_flag)
1341 static enum power_supply_property rk30_adc_battery_ac_props[] =
1343 POWER_SUPPLY_PROP_ONLINE,
1346 static struct power_supply rk30_ac_supply =
1349 .type = POWER_SUPPLY_TYPE_MAINS,
1351 .get_property = rk30_adc_battery_get_ac_property,
1353 .properties = rk30_adc_battery_ac_props,
1354 .num_properties = ARRAY_SIZE(rk30_adc_battery_ac_props),
1356 static void rk30_adc_battery_dcdet_delaywork(struct work_struct *work)
1360 struct rk30_adc_battery_platform_data *pdata;
1363 struct rk30_adc_battery_data *bat = container_of((work), \
1364 struct rk30_adc_battery_data, dcwakeup_work);
1366 rk28_send_wakeup_key(); // wake up the system
1370 irq = gpio_to_irq(pdata->dc_det_pin);
1371 free_irq(irq, NULL);
1373 irq_flag = gpio_get_value (pdata->dc_det_pin) ? IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING;
1374 ret = request_irq(irq, rk30_adc_battery_dc_wakeup, irq_flag, "ac_charge_irq", NULL);// reinitialize the DC irq
1376 free_irq(irq, NULL);
1379 power_supply_changed(&bat ->ac);
1381 bat ->bat_status_cnt = 0; //the state of battery is change
1386 static int rk30_adc_battery_get_status(struct rk30_adc_battery_data *bat)
1388 return (bat->bat_status);
1391 static int rk30_adc_battery_get_health(struct rk30_adc_battery_data *bat)
1393 return POWER_SUPPLY_HEALTH_GOOD;
1396 static int rk30_adc_battery_get_present(struct rk30_adc_battery_data *bat)
1398 return (bat->bat_voltage < BATT_MAX_VOL_VALUE) ? 0 : 1;
1401 static int rk30_adc_battery_get_voltage(struct rk30_adc_battery_data *bat)
1403 return (bat->bat_voltage );
1406 static int rk30_adc_battery_get_capacity(struct rk30_adc_battery_data *bat)
1408 return (bat->bat_capacity);
1411 static int rk30_adc_battery_get_property(struct power_supply *psy,
1412 enum power_supply_property psp,
1413 union power_supply_propval *val)
1416 struct rk30_adc_battery_data *bat = container_of((psy), \
1417 struct rk30_adc_battery_data, bat);
1419 case POWER_SUPPLY_PROP_STATUS:
1420 val->intval = rk30_adc_battery_get_status(bat);
1421 DBG("gBatStatus=%d\n",val->intval);
1423 case POWER_SUPPLY_PROP_HEALTH:
1424 val->intval = rk30_adc_battery_get_health(bat);
1425 DBG("gBatHealth=%d\n",val->intval);
1427 case POWER_SUPPLY_PROP_PRESENT:
1428 val->intval = rk30_adc_battery_get_present(bat);
1429 DBG("gBatPresent=%d\n",val->intval);
1431 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
1432 val ->intval = rk30_adc_battery_get_voltage(bat);
1433 DBG("gBatVoltage=%d\n",val->intval);
1435 case POWER_SUPPLY_PROP_CAPACITY:
1436 if(battery_test_flag == 2)
1439 val->intval = rk30_adc_battery_get_capacity(bat);
1440 DBG("gBatCapacity=%d%%\n",val->intval);
1442 case POWER_SUPPLY_PROP_TECHNOLOGY:
1443 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
1445 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
1446 val->intval = BATT_MAX_VOL_VALUE;
1448 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
1449 val->intval = BATT_ZERO_VOL_VALUE;
1459 static enum power_supply_property rk30_adc_battery_props[] = {
1461 POWER_SUPPLY_PROP_STATUS,
1462 POWER_SUPPLY_PROP_HEALTH,
1463 POWER_SUPPLY_PROP_PRESENT,
1464 POWER_SUPPLY_PROP_VOLTAGE_NOW,
1465 POWER_SUPPLY_PROP_TECHNOLOGY,
1466 POWER_SUPPLY_PROP_CAPACITY,
1467 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
1468 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
1471 static struct power_supply rk30_battery_supply =
1474 .type = POWER_SUPPLY_TYPE_BATTERY,
1476 .get_property = rk30_adc_battery_get_property,
1478 .properties = rk30_adc_battery_props,
1479 .num_properties = ARRAY_SIZE(rk30_adc_battery_props),
1483 static void rk30_adc_battery_resume_check(struct rk30_adc_battery_data *bat)
1487 int new_capacity, old_capacity;
1488 // struct rk30_adc_battery_data *bat = gBatteryData;
1490 bat ->old_charge_level = -1;
1491 bat ->pSamples = bat->adc_samples;
1493 adc_sync_read(bat->client); //start adc sample
1494 level = oldlevel = rk_battery_get_status(bat);//rk30_adc_battery_status_samples(bat);//init charge status
1496 for (i = 0; i < NUM_VOLTAGE_SAMPLE; i++) { //0.3 s
1499 rk30_adc_battery_voltage_samples(bat); //get voltage
1500 level = rk_battery_get_status(bat);// rk30_adc_battery_status_samples(bat); //check charge status
1501 if (oldlevel != level){
1502 oldlevel = level; //if charge status changed, reset sample
1506 new_capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage);
1507 old_capacity =bat-> suspend_capacity;
1509 //if (bat->bat_status != POWER_SUPPLY_STATUS_NOT_CHARGING){
1512 bat->bat_capacity = (new_capacity > old_capacity) ? new_capacity : old_capacity;
1515 bat->bat_capacity = (new_capacity < old_capacity) ? new_capacity : old_capacity; // aviod the value of capacity increase dicharge
1520 static int rk30_adc_battery_suspend(struct platform_device *dev, pm_message_t state)
1523 struct rk30_adc_battery_data *data = platform_get_drvdata(dev);
1525 data ->suspend_capacity = data->bat_capacity;
1526 data ->suspend_time = get_seconds();
1527 cancel_delayed_work(&data ->delay_work);
1529 if( data ->pdata->batt_low_pin != INVALID_GPIO){
1531 irq = gpio_to_irq(data ->pdata->batt_low_pin);
1533 enable_irq_wake(irq);
1539 static int rk30_adc_battery_resume(struct platform_device *dev)
1542 struct rk30_adc_battery_data *data = platform_get_drvdata(dev);
1543 data ->resume_time = get_seconds();
1544 data ->resume = true;
1545 queue_delayed_work(data->wq, &data ->delay_work, msecs_to_jiffies(100));
1546 if( data ->pdata->batt_low_pin != INVALID_GPIO){
1548 irq = gpio_to_irq(data ->pdata ->batt_low_pin);
1549 disable_irq_wake(irq);
1555 #define rk30_adc_battery_suspend NULL
1556 #define rk30_adc_battery_resume NULL
1560 unsigned long AdcTestCnt = 0;
1561 static void rk30_adc_battery_timer_work(struct work_struct *work)
1563 struct rk30_adc_battery_data *bat = container_of((work), \
1564 struct rk30_adc_battery_data, delay_work);
1568 if( (bat->resume_time - bat->suspend_time) >= 1800 )
1569 rk30_adc_battery_resume_check(bat);
1571 bat->bat_capacity = bat->suspend_capacity;
1572 bat ->resume = false;
1573 bat ->bat_change =1;
1577 if (bat ->poweron_check){
1578 bat ->poweron_check = 0;
1579 rk30_adc_battery_poweron_capacity_check(bat);
1582 bat ->charge_level = rk_battery_get_status(bat);
1583 rk30_adc_battery_status_samples(bat);
1584 rk30_adc_battery_voltage_samples(bat);
1585 rk30_adc_battery_capacity_samples(bat);
1587 if( 0 == bat ->pdata ->charging_sleep){
1588 if( 1 == bat->charge_level){ // charge
1589 if(0 == bat->status_lock ){
1590 wake_lock(&batt_wake_lock); //lock
1591 bat ->status_lock = 1;
1595 if(1 == bat ->status_lock ){
1596 wake_unlock(&batt_wake_lock); //unlock
1597 bat ->status_lock = 0;
1603 /*update battery parameter after adc and capacity has been changed*/
1604 if(bat ->bat_change){
1605 bat ->bat_change= 0;
1606 if(0 == bat ->bat_capacity){
1607 bat ->ac_charging = 0;
1608 bat ->usb_charging = 0;
1611 rk30_adc_battery_put_capacity(bat ->bat_capacity);
1612 power_supply_changed(&bat ->bat);
1613 power_supply_changed(&bat ->ac);
1614 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1615 power_supply_changed(&bat ->usb);
1620 //if (rk30_battery_dbg_level){
1621 if (++AdcTestCnt >= 2)
1625 DBG("Status = %d, RealAdcVal = %d, RealVol = %d,gBatVol = %d, gBatCap = %d, RealCapacity = %d, batt_dischargecnt = %d\n, chargecnt = %d,ac_count = %d, usb_count =%d ,usb_dischargecount =%d\n",
1626 bat ->bat_status, bat ->adc_val, rk_adc_voltage(bat, bat ->adc_val),
1627 bat ->bat_voltage, bat ->bat_capacity, bat ->capacitytmp, bat ->gBatCapacityDisChargeCnt, bat ->gBatCapacityChargeCnt,
1628 bat ->gBatCapacityacChargeCnt, bat ->gBatCapacityusbChargeCnt, bat ->gBatCapacityusbdisChargeCnt);
1632 queue_delayed_work(bat ->wq, &bat ->delay_work, msecs_to_jiffies(TIMER_MS_COUNTS));
1637 static int rk30_adc_battery_io_init(struct rk30_adc_battery_platform_data *pdata)
1641 if (pdata->io_init) {
1646 //charge control pin
1647 if (pdata->charge_set_pin != INVALID_GPIO){
1648 ret = gpio_request(pdata->charge_set_pin, NULL);
1650 printk("failed to request dc_det gpio\n");
1653 gpio_direction_output(pdata->charge_set_pin, 1 - pdata->charge_set_level);
1656 //dc charge detect pin
1657 if (pdata->dc_det_pin != INVALID_GPIO){
1658 ret = gpio_request(pdata->dc_det_pin, NULL);
1660 printk("failed to request dc_det gpio\n");
1664 gpio_pull_updown(pdata->dc_det_pin, GPIOPullUp);//important
1665 ret = gpio_direction_input(pdata->dc_det_pin);
1667 printk("failed to set gpio dc_det input\n");
1673 if (pdata->charge_ok_pin != INVALID_GPIO){
1674 ret = gpio_request(pdata->charge_ok_pin, NULL);
1676 printk("failed to request charge_ok gpio\n");
1680 gpio_pull_updown(pdata->charge_ok_pin, GPIOPullUp);//important
1681 ret = gpio_direction_input(pdata->charge_ok_pin);
1683 printk("failed to set gpio charge_ok input\n");
1688 if( pdata->batt_low_pin != INVALID_GPIO){
1689 ret = gpio_request(pdata->batt_low_pin, NULL);
1691 printk("failed to request batt_low_pin gpio\n");
1695 gpio_pull_updown(pdata->batt_low_pin, GPIOPullUp);
1696 ret = gpio_direction_input(pdata->batt_low_pin);
1698 printk("failed to set gpio batt_low_pin input\n");
1708 extern void kernel_power_off(void);
1709 int get_battery_status(void)
1711 return system_lowerpower;
1713 static void rk30_adc_battery_check(struct rk30_adc_battery_data *bat)
1717 struct rk30_adc_battery_platform_data *pdata = bat->pdata;
1719 // pSamples = bat->adc_samples;
1721 adc_sync_read(bat->client); //start adc sample
1722 level = oldlevel = rk_battery_get_status(bat);// rk30_adc_battery_status_samples(bat);//init charge status
1724 for (i = 0; i < NUM_VOLTAGE_SAMPLE; i++){ //0.3 s
1726 rk30_adc_battery_voltage_samples(bat); //get voltage
1727 //level = rk30_adc_battery_status_samples(bat); //check charge status
1728 level = rk_battery_get_status(bat);
1730 if (oldlevel != level){
1731 oldlevel = level; //if charge status changed, reset sample
1734 bat->charge_level = level;
1738 bat->bat_capacity = rk30_adc_battery_voltage_to_capacity(bat, bat->bat_voltage); //init bat_capacity
1740 if((1 == level)&&(0 == bat->start_voltage_status )){
1741 bat->charge_start_voltage = bat->bat_voltage;
1742 bat->start_voltage_status = 1;
1743 bat->charge_start_capacity = bat->bat_capacity;
1744 bat ->charge_up_proprotion = (100 - bat ->charge_start_capacity)/10+1;
1745 bat ->charge_down_proportion = bat ->charge_start_capacity/10+1;
1748 if (get_ac_status(bat) || dwc_otg_check_dpdm() ){
1749 if (is_charge_ok(bat) == 1){
1750 bat->bat_status = POWER_SUPPLY_STATUS_FULL;
1751 bat->bat_capacity = 100;
1753 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1754 if( 0 != dwc_otg_check_dpdm() )
1755 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
1756 if(dwc_otg_check_dpdm() == 0){
1757 bat->usb_charging = 0;
1758 }else if(dwc_otg_check_dpdm() == 1){
1759 bat->usb_charging = 1;
1760 if(bat -> pdata ->control_usb_charging)
1761 bat -> pdata ->control_usb_charging(0);
1762 }else if(dwc_otg_check_dpdm() == 2){
1763 bat->usb_charging = 0;
1764 bat -> ac_charging = 1;
1765 if(bat -> pdata ->control_usb_charging)
1766 bat -> pdata ->control_usb_charging(1);
1769 if(1 == get_ac_status(bat)){
1770 bat->bat_status = POWER_SUPPLY_STATUS_CHARGING;
1771 bat -> ac_charging = 1;
1773 power_supply_changed(&bat ->ac);
1774 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1775 power_supply_changed(&bat ->usb);
1780 if (bat->bat_capacity == 0) {
1781 bat->bat_capacity = 1;
1782 system_lowerpower = 1;
1785 if(0 !=bat ->pdata->low_voltage_protection ){
1786 if((bat->bat_voltage <= bat ->pdata->low_voltage_protection)&&(bat->bat_status != POWER_SUPPLY_STATUS_CHARGING))
1787 system_lowerpower = 1;
1789 if((bat->bat_voltage <= BATT_ZERO_VOL_VALUE)&&(bat->bat_status != POWER_SUPPLY_STATUS_CHARGING))
1790 system_lowerpower = 1;
1794 if ((bat->bat_voltage <= BATT_ZERO_VOL_VALUE)&&(bat->bat_status != POWER_SUPPLY_STATUS_CHARGING)){
1801 static void rk30_adc_battery_callback(struct adc_client *client, void *param, int result)
1803 struct rk30_adc_battery_data *bat = container_of((client), \
1804 struct rk30_adc_battery_data, client);
1807 DBG("adc_battery_callback resule < 0 , the value ");
1810 gBatteryData->adc_val = result;
1811 DBG("result = %d, gBatteryData->adc_val = %d\n", result, gBatteryData->adc_val );
1816 static void rk30_adc_battery_lowerpower_delaywork(struct work_struct *work)
1820 struct rk30_adc_battery_data *bat = container_of((work), \
1821 struct rk30_adc_battery_data, lowerpower_work);
1823 if( bat->pdata->batt_low_pin != INVALID_GPIO){
1824 irq = gpio_to_irq(bat ->pdata ->batt_low_pin);
1828 printk("lowerpower\n");
1829 rk28_send_wakeup_key(); // wake up the system
1834 static irqreturn_t rk30_adc_battery_low_wakeup(int irq,void *dev_id)
1836 queue_work(gBatteryData->wq, &gBatteryData->lowerpower_work);
1840 static int rk30_adc_battery_probe(struct platform_device *pdev)
1845 struct adc_client *client;
1846 struct rk30_adc_battery_data *data;
1847 struct rk30_adc_battery_platform_data *pdata = pdev->dev.platform_data;
1848 gSecondsCnt = get_seconds();
1849 data = kzalloc(sizeof(*data), GFP_KERNEL);
1852 goto err_data_alloc_failed;
1854 memset(data, 0, sizeof(struct rk30_adc_battery_data));
1855 gBatteryData = data;
1857 platform_set_drvdata(pdev, data);
1859 data->pdata = pdata;
1860 data->status_lock = 0;
1861 data->old_charge_level = -1;
1862 data->capacitytmp = 0;
1863 data->suspend_capacity = 0;
1864 data->ac_charging = 0;
1865 data->usb_charging = 0;
1866 data->full_times = 0;
1867 data->gBatCapacityDisChargeCnt =0;
1868 data->gBatCapacityChargeCnt=0;
1869 data->gBatCapacityusbdisChargeCnt=0 ;
1870 data->gBatCapacityusbChargeCnt =0;
1871 data->gBatCapacityacChargeCnt = 0;
1872 data->charge_source_now = 0;
1873 data->charge_soure_old = 0;
1874 data->start_voltage_status = 0;
1875 data->charge_full_flag =0;
1876 data->pSamples = data->adc_samples;
1878 data->bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
1879 wake_lock_init(&batt_wake_lock, WAKE_LOCK_SUSPEND, "batt_lock");
1880 wake_lock_init(&charge_display_lock, WAKE_LOCK_SUSPEND, "charge_display_lock"); //charge_display_lock
1882 ret = rk30_adc_battery_io_init(pdata);
1888 memset(data->adc_samples, 0, sizeof(int)*(NUM_VOLTAGE_SAMPLE + 2));
1890 //register adc for battery sample
1891 if(0 == pdata->adc_channel)
1892 client = adc_register(0, rk30_adc_battery_callback, NULL); //pdata->adc_channel = ani0
1894 client = adc_register(pdata->adc_channel, rk30_adc_battery_callback, NULL);
1897 goto err_adc_register_failed;
1901 data->client = client;
1902 data->adc_val = adc_sync_read(client);
1904 data ->bat = rk30_battery_supply;
1905 ret = power_supply_register(&pdev->dev,&data ->bat);
1908 printk(KERN_INFO "fail to battery power_supply_register\n");
1909 goto err_battery_failed;
1911 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
1912 data ->usb = rk30_usb_supply;
1913 ret = power_supply_register(&pdev->dev, &data ->usb);
1916 printk(KERN_INFO "fail to usb power_supply_register\n");
1917 goto err_usb_failed;
1920 data ->ac = rk30_ac_supply;
1921 ret = power_supply_register(&pdev->dev, &data ->ac);
1924 printk(KERN_INFO "fail to ac power_supply_register\n");
1928 #if defined (CONFIG_BATTERY_RK30_AC_CHARGE)
1929 //init dc dectet irq & delay work
1930 if (pdata->dc_det_pin != INVALID_GPIO){
1931 INIT_WORK(&data->dcwakeup_work, rk30_adc_battery_dcdet_delaywork);
1933 irq = gpio_to_irq(pdata->dc_det_pin);
1934 irq_flag = gpio_get_value (pdata->dc_det_pin) ? IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING;
1935 ret = request_irq(irq, rk30_adc_battery_dc_wakeup, irq_flag, "ac_charge_irq", NULL);
1938 printk("failed to request dc det irq\n");
1939 goto err_dcirq_failed;
1941 enable_irq_wake(irq);
1947 ret = device_create_file(&pdev->dev,&dev_attr_batparam);
1950 printk(KERN_ERR "failed to create bat param file\n");
1951 goto err_battery_failed;
1954 ret = create_sysfs_interfaces(&pdev->dev);
1959 "device rk30_adc_batterry sysfs register failed\n");
1963 //Power on Battery detect
1964 rk30_adc_battery_check(data);
1966 data->wq = create_singlethread_workqueue("adc_battd");
1967 INIT_DELAYED_WORK(&data->delay_work, rk30_adc_battery_timer_work);
1969 if(1 == pdata->save_capacity ){
1970 queue_delayed_work(data->wq, &data->delay_work, msecs_to_jiffies(TIMER_MS_COUNTS*10));
1971 data ->poweron_check = 1;
1973 queue_delayed_work(data->wq, &data->delay_work, msecs_to_jiffies(TIMER_MS_COUNTS));
1974 data ->poweron_check = 0;
1976 if( pdata->batt_low_pin != INVALID_GPIO){
1978 if (gpio_get_value(pdata->batt_low_pin) ==0){
1980 if (gpio_get_value(pdata->batt_low_pin) ==0){
1981 printk("lower power\n");
1986 INIT_WORK(&data->lowerpower_work, rk30_adc_battery_lowerpower_delaywork);
1987 irq = gpio_to_irq(pdata->batt_low_pin);
1988 ret = request_irq(irq, rk30_adc_battery_low_wakeup, IRQF_TRIGGER_LOW, "batt_low_irq", NULL);
1991 printk("failed to request batt_low_irq irq\n");
1992 goto err_lowpowerirq_failed;
1998 printk(KERN_INFO "rk30_adc_battery: driver initialized\n");
2003 power_supply_unregister(&data ->usb);
2005 power_supply_unregister(&data ->ac);
2008 power_supply_unregister(&data ->bat);
2011 free_irq(gpio_to_irq(pdata->dc_det_pin), data);
2013 err_lowpowerirq_failed:
2014 free_irq(gpio_to_irq(pdata->batt_low_pin), data);
2016 err_adc_register_failed:
2018 err_data_alloc_failed:
2021 printk("rk30_adc_battery: error!\n");
2026 static int rk30_adc_battery_remove(struct platform_device *pdev)
2028 struct rk30_adc_battery_data *data = platform_get_drvdata(pdev);
2029 struct rk30_adc_battery_platform_data *pdata = pdev->dev.platform_data;
2031 cancel_delayed_work(&data->delay_work);
2032 #if defined (CONFIG_BATTERY_RK30_AC_CHARGE)
2033 if (pdata->dc_det_pin != INVALID_GPIO)
2034 cancel_delayed_work_sync(&data->dcwakeup_work);
2037 if( pdata->batt_low_pin != INVALID_GPIO)
2038 cancel_delayed_work_sync(&data->lowerpower_work);
2039 #if defined (CONFIG_BATTERY_RK30_USB_CHARGE)
2040 power_supply_unregister(&data ->usb);
2042 power_supply_unregister(&data ->ac);
2043 power_supply_unregister(&data ->bat);
2045 free_irq(gpio_to_irq(pdata->dc_det_pin), data);
2052 static struct platform_driver rk30_adc_battery_driver = {
2053 .probe = rk30_adc_battery_probe,
2054 .remove = rk30_adc_battery_remove,
2055 .suspend = rk30_adc_battery_suspend,
2056 .resume = rk30_adc_battery_resume,
2058 .name = "rk30-battery",
2059 .owner = THIS_MODULE,
2063 static int __init rk30_adc_battery_init(void)
2065 return platform_driver_register(&rk30_adc_battery_driver);
2068 static void __exit rk30_adc_battery_exit(void)
2070 platform_driver_unregister(&rk30_adc_battery_driver);
2072 module_init(rk30_adc_battery_init);//module_init(rk30_adc_battery_init);//
2073 //subsys_initcall(rk30_adc_battery_init);
2074 //fs_initcall(rk30_adc_battery_init);
2075 module_exit(rk30_adc_battery_exit);
2077 MODULE_DESCRIPTION("Battery detect driver for the rk30");
2078 MODULE_AUTHOR("luowei lw@rock-chips.com");
2079 MODULE_LICENSE("GPL");