pm2301: Provide u9540 support for the pm2301 charger
authorMichel JAOUEN <michel.jaouen@stericsson.com>
Thu, 26 Apr 2012 08:00:04 +0000 (10:00 +0200)
committerLee Jones <lee.jones@linaro.org>
Wed, 23 Jan 2013 11:33:02 +0000 (11:33 +0000)
AC charger driver for the DB9540 based platforms.

Signed-off-by: Rajkumar Kasirajan <rajkumar.kasirajan@stericsson.com>
Signed-off-by: Loic Pallardy <loic.pallardy@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Michel JAOUEN <michel.jaouen@stericsson.com>
Tested-by: Michel JAOUEN <michel.jaouen@stericsson.com>
drivers/power/Kconfig
drivers/power/Makefile
drivers/power/ab8500_charger.c
drivers/power/pm2301_charger.c [new file with mode: 0644]
include/linux/mfd/abx500/ab8500-bm.h
include/linux/mfd/abx500/ux500_chargalg.h
include/linux/pm2301_charger.h [new file with mode: 0644]

index 9f45e2f77d531748016db6799a39fcd7465b6ab9..4811b59ba730fa3270a9055ee2a24d3be8b6a5b7 100644 (file)
@@ -346,6 +346,13 @@ config AB8500_BM
        help
          Say Y to include support for AB8500 battery management.
 
+config CHARGER_PM2301
+       bool "PM2301 Battery Charger Driver"
+       depends on AB8500_BM
+       help
+         Say Y to include support for PM2301 charger driver.
+         Depends on AB8500 battery management core.
+
 source "drivers/power/reset/Kconfig"
 
 endif # POWER_SUPPLY
index b11e0c7ea0f192e0aabbc96c92cfab7657733c00..aa966e80683466db72ddf22503e901cfbb77dcec 100644 (file)
@@ -46,6 +46,7 @@ obj-$(CONFIG_CHARGER_LP8727)  += lp8727_charger.o
 obj-$(CONFIG_CHARGER_LP8788)   += lp8788-charger.o
 obj-$(CONFIG_CHARGER_GPIO)     += gpio-charger.o
 obj-$(CONFIG_CHARGER_MANAGER)  += charger-manager.o
+obj-$(CONFIG_CHARGER_PM2301)   += pm2301_charger.o
 obj-$(CONFIG_CHARGER_MAX8997)  += max8997_charger.o
 obj-$(CONFIG_CHARGER_MAX8998)  += max8998_charger.o
 obj-$(CONFIG_CHARGER_BQ2415X)  += bq2415x_charger.o
index d5a8bdadb49a246ec171a579b9decc9506422bf9..43ec82ba427589236a46beb3f379eee514fd3b6c 100644 (file)
@@ -2830,8 +2830,11 @@ static int ab8500_charger_remove(struct platform_device *pdev)
        destroy_workqueue(di->charger_wq);
 
        flush_scheduled_work();
-       power_supply_unregister(&di->usb_chg.psy);
-       power_supply_unregister(&di->ac_chg.psy);
+       if(di->usb_chg.enabled)
+               power_supply_unregister(&di->usb_chg.psy);
+       if(di->ac_chg.enabled)
+               power_supply_unregister(&di->ac_chg.psy);
+
        platform_set_drvdata(pdev, NULL);
 
        return 0;
@@ -2899,6 +2902,7 @@ static int ab8500_charger_probe(struct platform_device *pdev)
                ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
        di->ac_chg.max_out_curr = ab8500_charger_current_map[
                ARRAY_SIZE(ab8500_charger_current_map) - 1];
+       di->ac_chg.enabled = di->pdata->ac_enabled;
 
        /* USB supply */
        /* power_supply base class */
@@ -2917,7 +2921,7 @@ static int ab8500_charger_probe(struct platform_device *pdev)
                ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
        di->usb_chg.max_out_curr = ab8500_charger_current_map[
                ARRAY_SIZE(ab8500_charger_current_map) - 1];
-
+       di->usb_chg.enabled = di->pdata->usb_enabled;
 
        /* Create a work queue for the charger */
        di->charger_wq =
@@ -2995,17 +2999,21 @@ static int ab8500_charger_probe(struct platform_device *pdev)
        }
 
        /* Register AC charger class */
-       ret = power_supply_register(di->dev, &di->ac_chg.psy);
-       if (ret) {
-               dev_err(di->dev, "failed to register AC charger\n");
-               goto free_charger_wq;
+       if(di->ac_chg.enabled) {
+               ret = power_supply_register(di->dev, &di->ac_chg.psy);
+               if (ret) {
+                       dev_err(di->dev, "failed to register AC charger\n");
+                       goto free_charger_wq;
+               }
        }
 
        /* Register USB charger class */
-       ret = power_supply_register(di->dev, &di->usb_chg.psy);
-       if (ret) {
-               dev_err(di->dev, "failed to register USB charger\n");
-               goto free_ac;
+       if(di->usb_chg.enabled) {
+               ret = power_supply_register(di->dev, &di->usb_chg.psy);
+               if (ret) {
+                       dev_err(di->dev, "failed to register USB charger\n");
+                       goto free_ac;
+               }
        }
 
        di->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
@@ -3085,9 +3093,11 @@ free_irq:
 put_usb_phy:
        usb_put_phy(di->usb_phy);
 free_usb:
-       power_supply_unregister(&di->usb_chg.psy);
+       if(di->usb_chg.enabled)
+               power_supply_unregister(&di->usb_chg.psy);
 free_ac:
-       power_supply_unregister(&di->ac_chg.psy);
+       if(di->ac_chg.enabled)
+               power_supply_unregister(&di->ac_chg.psy);
 free_charger_wq:
        destroy_workqueue(di->charger_wq);
        return ret;
diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
new file mode 100644 (file)
index 0000000..60a3032
--- /dev/null
@@ -0,0 +1,1455 @@
+/*
+ * Power supply driver for ST Ericsson pm2xxx_charger charger
+ *
+ * Copyright 2012 ST Ericsson.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/completion.h>
+#include <linux/regulator/consumer.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/workqueue.h>
+#include <linux/kobject.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/mfd/abx500/ab8500-bm.h>
+#include <linux/mfd/abx500/ab8500-gpadc.h>
+#include <linux/mfd/abx500/ux500_chargalg.h>
+#include <linux/pm2301_charger.h>
+
+#define MAIN_WDOG_ENA                  0x01
+#define MAIN_WDOG_KICK                 0x02
+#define MAIN_WDOG_DIS                  0x00
+#define CHARG_WD_KICK                  0x01
+#define MAIN_CH_ENA                    0x01
+#define MAIN_CH_NO_OVERSHOOT_ENA_N     0x02
+#define MAIN_CH_DET                    0x01
+#define MAIN_CH_CV_ON                  0x04
+#define OTP_ENABLE_WD                  0x01
+
+#define MAIN_CH_INPUT_CURR_SHIFT       4
+
+#define LED_INDICATOR_PWM_ENA          0x01
+#define LED_INDICATOR_PWM_DIS          0x00
+#define LED_IND_CUR_5MA                        0x04
+#define LED_INDICATOR_PWM_DUTY_252_256 0xBF
+
+/* HW failure constants */
+#define MAIN_CH_TH_PROT                        0x02
+#define MAIN_CH_NOK                    0x01
+
+/* Watchdog timeout constant */
+#define WD_TIMER                       0x30 /* 4min */
+#define WD_KICK_INTERVAL               (60 * HZ)
+
+/* Constant voltage/current */
+#define PM2XXX_CONST_CURR              0x0
+#define PM2XXX_CONST_VOLT              0x1
+
+/* Lowest charger voltage is 3.39V -> 0x4E */
+#define LOW_VOLT_REG                   0x4E
+
+#define PM2XXX_BATT_CTRL_REG1          0x00
+#define PM2XXX_BATT_CTRL_REG2          0x01
+#define PM2XXX_BATT_CTRL_REG3          0x02
+#define PM2XXX_BATT_CTRL_REG4          0x03
+#define PM2XXX_BATT_CTRL_REG5          0x04
+#define PM2XXX_BATT_CTRL_REG6          0x05
+#define PM2XXX_BATT_CTRL_REG7          0x06
+#define PM2XXX_BATT_CTRL_REG8          0x07
+#define PM2XXX_NTC_CTRL_REG1           0x08
+#define PM2XXX_NTC_CTRL_REG2           0x09
+#define PM2XXX_BATT_CTRL_REG9          0x0A
+#define PM2XXX_BATT_STAT_REG1          0x0B
+#define PM2XXX_INP_VOLT_VPWR2          0x11
+#define PM2XXX_INP_DROP_VPWR2          0x13
+#define PM2XXX_INP_VOLT_VPWR1          0x15
+#define PM2XXX_INP_DROP_VPWR1          0x17
+#define PM2XXX_INP_MODE_VPWR           0x18
+#define PM2XXX_BATT_WD_KICK            0x70
+#define PM2XXX_DEV_VER_STAT            0x0C
+#define PM2XXX_THERM_WARN_CTRL_REG     0x20
+#define PM2XXX_BATT_DISC_REG           0x21
+#define PM2XXX_BATT_LOW_LEV_COMP_REG   0x22
+#define PM2XXX_BATT_LOW_LEV_VAL_REG    0x23
+#define PM2XXX_I2C_PAD_CTRL_REG                0x24
+#define PM2XXX_SW_CTRL_REG             0x26
+#define PM2XXX_LED_CTRL_REG            0x28
+
+#define PM2XXX_REG_INT1                0x40
+#define PM2XXX_MASK_REG_INT1   0x50
+#define PM2XXX_SRCE_REG_INT1   0x60
+#define PM2XXX_REG_INT2                0x41
+#define PM2XXX_MASK_REG_INT2   0x51
+#define PM2XXX_SRCE_REG_INT2   0x61
+#define PM2XXX_REG_INT3                0x42
+#define PM2XXX_MASK_REG_INT3   0x52
+#define PM2XXX_SRCE_REG_INT3   0x62
+#define PM2XXX_REG_INT4                0x43
+#define PM2XXX_MASK_REG_INT4   0x53
+#define PM2XXX_SRCE_REG_INT4   0x63
+#define PM2XXX_REG_INT5                0x44
+#define PM2XXX_MASK_REG_INT5   0x54
+#define PM2XXX_SRCE_REG_INT5   0x64
+#define PM2XXX_REG_INT6                0x45
+#define PM2XXX_MASK_REG_INT6   0x55
+#define PM2XXX_SRCE_REG_INT6   0x65
+
+#define VPWR_OVV 0x0
+#define VSYSTEM_OVV 0x1
+
+/* control Reg 1 */
+#define PM2XXX_CH_RESUME_EN         0x1
+#define PM2XXX_CH_RESUME_DIS           0x0
+
+/* control Reg 2 */
+#define PM2XXX_CH_AUTO_RESUME_EN       0X2
+#define PM2XXX_CH_AUTO_RESUME_DIS      0X0
+#define PM2XXX_CHARGER_ENA             0x4
+#define PM2XXX_CHARGER_DIS             0x0
+
+/* control Reg 3 */
+#define PM2XXX_CH_WD_CC_PHASE_OFF      0x0
+#define PM2XXX_CH_WD_CC_PHASE_5MIN     0x1
+#define PM2XXX_CH_WD_CC_PHASE_10MIN    0x2
+#define PM2XXX_CH_WD_CC_PHASE_30MIN    0x3
+#define PM2XXX_CH_WD_CC_PHASE_60MIN    0x4
+#define PM2XXX_CH_WD_CC_PHASE_120MIN   0x5
+#define PM2XXX_CH_WD_CC_PHASE_240MIN   0x6
+#define PM2XXX_CH_WD_CC_PHASE_360MIN   0x7
+
+#define PM2XXX_CH_WD_CV_PHASE_OFF      (0x0<<3)
+#define PM2XXX_CH_WD_CV_PHASE_5MIN     (0x1<<3)
+#define PM2XXX_CH_WD_CV_PHASE_10MIN    (0x2<<3)
+#define PM2XXX_CH_WD_CV_PHASE_30MIN    (0x3<<3)
+#define PM2XXX_CH_WD_CV_PHASE_60MIN    (0x4<<3)
+#define PM2XXX_CH_WD_CV_PHASE_120MIN   (0x5<<3)
+#define PM2XXX_CH_WD_CV_PHASE_240MIN   (0x6<<3)
+#define PM2XXX_CH_WD_CV_PHASE_360MIN   (0x7<<3)
+
+/* control Reg 4 */
+#define PM2XXX_CH_WD_PRECH_PHASE_OFF   0x0
+#define PM2XXX_CH_WD_PRECH_PHASE_1MIN  0x1
+#define PM2XXX_CH_WD_PRECH_PHASE_5MIN  0x2
+#define PM2XXX_CH_WD_PRECH_PHASE_10MIN 0x3
+#define PM2XXX_CH_WD_PRECH_PHASE_30MIN 0x4
+#define PM2XXX_CH_WD_PRECH_PHASE_60MIN 0x5
+#define PM2XXX_CH_WD_PRECH_PHASE_120MIN        0x6
+#define PM2XXX_CH_WD_PRECH_PHASE_240MIN        0x7
+
+/* control Reg 5 */
+#define PM2XXX_CH_WD_AUTO_TIMEOUT_NONE 0x0
+#define PM2XXX_CH_WD_AUTO_TIMEOUT_20MIN        0x1
+
+/* control Reg 6 */
+#define PM2XXX_DIR_CH_CC_CURRENT_MASK  0x0F
+#define PM2XXX_DIR_CH_CC_CURRENT_200MA 0x0
+#define PM2XXX_DIR_CH_CC_CURRENT_400MA 0x2
+#define PM2XXX_DIR_CH_CC_CURRENT_600MA 0x3
+#define PM2XXX_DIR_CH_CC_CURRENT_800MA 0x4
+#define PM2XXX_DIR_CH_CC_CURRENT_1000MA        0x5
+#define PM2XXX_DIR_CH_CC_CURRENT_1200MA        0x6
+#define PM2XXX_DIR_CH_CC_CURRENT_1400MA        0x7
+#define PM2XXX_DIR_CH_CC_CURRENT_1600MA        0x8
+#define PM2XXX_DIR_CH_CC_CURRENT_1800MA        0x9
+#define PM2XXX_DIR_CH_CC_CURRENT_2000MA        0xA
+#define PM2XXX_DIR_CH_CC_CURRENT_2200MA        0xB
+#define PM2XXX_DIR_CH_CC_CURRENT_2400MA        0xC
+#define PM2XXX_DIR_CH_CC_CURRENT_2600MA        0xD
+#define PM2XXX_DIR_CH_CC_CURRENT_2800MA        0xE
+#define PM2XXX_DIR_CH_CC_CURRENT_3000MA        0xF
+
+#define PM2XXX_CH_PRECH_CURRENT_MASK   0x30
+#define PM2XXX_CH_PRECH_CURRENT_25MA   (0x0<<4)
+#define PM2XXX_CH_PRECH_CURRENT_50MA   (0x1<<4)
+#define PM2XXX_CH_PRECH_CURRENT_75MA   (0x2<<4)
+#define PM2XXX_CH_PRECH_CURRENT_100MA  (0x3<<4)
+
+#define PM2XXX_CH_EOC_CURRENT_MASK     0xC0
+#define PM2XXX_CH_EOC_CURRENT_100MA    (0x0<<6)
+#define PM2XXX_CH_EOC_CURRENT_150MA    (0x1<<6)
+#define PM2XXX_CH_EOC_CURRENT_300MA    (0x2<<6)
+#define PM2XXX_CH_EOC_CURRENT_400MA    (0x3<<6)
+
+/* control Reg 7 */
+#define PM2XXX_CH_PRECH_VOL_2_5                0x0
+#define PM2XXX_CH_PRECH_VOL_2_7                0x1
+#define PM2XXX_CH_PRECH_VOL_2_9                0x2
+#define PM2XXX_CH_PRECH_VOL_3_1                0x3
+
+#define PM2XXX_CH_VRESUME_VOL_3_2      (0x0<<2)
+#define PM2XXX_CH_VRESUME_VOL_3_4      (0x1<<2)
+#define PM2XXX_CH_VRESUME_VOL_3_6      (0x2<<2)
+#define PM2XXX_CH_VRESUME_VOL_3_8      (0x3<<2)
+
+/* control Reg 8 */
+#define PM2XXX_CH_VOLT_MASK            0x3F
+#define PM2XXX_CH_VOLT_3_5             0x0
+#define PM2XXX_CH_VOLT_3_5225          0x1
+#define PM2XXX_CH_VOLT_3_6             0x4
+#define PM2XXX_CH_VOLT_3_7             0x8
+#define PM2XXX_CH_VOLT_4_0             0x14
+#define PM2XXX_CH_VOLT_4_175           0x1B
+#define PM2XXX_CH_VOLT_4_2             0x1C
+#define PM2XXX_CH_VOLT_4_275           0x1F
+#define PM2XXX_CH_VOLT_4_3             0x20
+
+/*NTC control register 1*/
+#define PM2XXX_BTEMP_HIGH_TH_45                0x0
+#define PM2XXX_BTEMP_HIGH_TH_50                0x1
+#define PM2XXX_BTEMP_HIGH_TH_55                0x2
+#define PM2XXX_BTEMP_HIGH_TH_60                0x3
+#define PM2XXX_BTEMP_HIGH_TH_65                0x4
+
+#define PM2XXX_BTEMP_LOW_TH_N5         (0x0<<3)
+#define PM2XXX_BTEMP_LOW_TH_0          (0x1<<3)
+#define PM2XXX_BTEMP_LOW_TH_5          (0x2<<3)
+#define PM2XXX_BTEMP_LOW_TH_10         (0x3<<3)
+
+/*NTC control register 2*/
+#define PM2XXX_NTC_BETA_COEFF_3477     0x0
+#define PM2XXX_NTC_BETA_COEFF_3964     0x1
+
+#define PM2XXX_NTC_RES_10K             (0x0<<2)
+#define PM2XXX_NTC_RES_47K             (0x1<<2)
+#define PM2XXX_NTC_RES_100K            (0x2<<2)
+#define PM2XXX_NTC_RES_NO_NTC          (0x3<<2)
+
+/* control Reg 9 */
+#define PM2XXX_CH_CC_MODEDROP_EN       1
+#define PM2XXX_CH_CC_MODEDROP_DIS      0
+
+#define PM2XXX_CH_CC_REDUCED_CURRENT_100MA     (0x0<<1)
+#define PM2XXX_CH_CC_REDUCED_CURRENT_200MA     (0x1<<1)
+#define PM2XXX_CH_CC_REDUCED_CURRENT_400MA     (0x2<<1)
+#define PM2XXX_CH_CC_REDUCED_CURRENT_IDENT     (0x3<<1)
+
+#define PM2XXX_CHARCHING_INFO_DIS      (0<<3)
+#define PM2XXX_CHARCHING_INFO_EN       (1<<3)
+
+#define PM2XXX_CH_150MV_DROP_300MV     (0<<4)
+#define PM2XXX_CH_150MV_DROP_150MV     (1<<4)
+
+
+/* charger status register */
+#define PM2XXX_CHG_STATUS_OFF          0x0
+#define PM2XXX_CHG_STATUS_ON           0x1
+#define PM2XXX_CHG_STATUS_FULL         0x2
+#define PM2XXX_CHG_STATUS_ERR          0x3
+#define PM2XXX_CHG_STATUS_WAIT         0x4
+#define PM2XXX_CHG_STATUS_NOBAT                0x5
+
+/* Input charger voltage VPWR2 */
+#define PM2XXX_VPWR2_OVV_6_0           0x0
+#define PM2XXX_VPWR2_OVV_6_3           0x1
+#define PM2XXX_VPWR2_OVV_10            0x2
+#define PM2XXX_VPWR2_OVV_NONE          0x3
+
+/* Input charger voltage VPWR1 */
+#define PM2XXX_VPWR1_OVV_6_0           0x0
+#define PM2XXX_VPWR1_OVV_6_3           0x1
+#define PM2XXX_VPWR1_OVV_10            0x2
+#define PM2XXX_VPWR1_OVV_NONE          0x3
+
+/* Battery low level comparator control register */
+#define PM2XXX_VBAT_LOW_MONITORING_DIS 0x0
+#define PM2XXX_VBAT_LOW_MONITORING_ENA 0x1
+
+/* Battery low level value control register */
+#define PM2XXX_VBAT_LOW_LEVEL_2_3      0x0
+#define PM2XXX_VBAT_LOW_LEVEL_2_4      0x1
+#define PM2XXX_VBAT_LOW_LEVEL_2_5      0x2
+#define PM2XXX_VBAT_LOW_LEVEL_2_6      0x3
+#define PM2XXX_VBAT_LOW_LEVEL_2_7      0x4
+#define PM2XXX_VBAT_LOW_LEVEL_2_8      0x5
+#define PM2XXX_VBAT_LOW_LEVEL_2_9      0x6
+#define PM2XXX_VBAT_LOW_LEVEL_3_0      0x7
+#define PM2XXX_VBAT_LOW_LEVEL_3_1      0x8
+#define PM2XXX_VBAT_LOW_LEVEL_3_2      0x9
+#define PM2XXX_VBAT_LOW_LEVEL_3_3      0xA
+#define PM2XXX_VBAT_LOW_LEVEL_3_4      0xB
+#define PM2XXX_VBAT_LOW_LEVEL_3_5      0xC
+#define PM2XXX_VBAT_LOW_LEVEL_3_6      0xD
+#define PM2XXX_VBAT_LOW_LEVEL_3_7      0xE
+#define PM2XXX_VBAT_LOW_LEVEL_3_8      0xF
+#define PM2XXX_VBAT_LOW_LEVEL_3_9      0x10
+#define PM2XXX_VBAT_LOW_LEVEL_4_0      0x11
+#define PM2XXX_VBAT_LOW_LEVEL_4_1      0x12
+#define PM2XXX_VBAT_LOW_LEVEL_4_2      0x13
+
+/* SW CTRL */
+#define PM2XXX_SWCTRL_HW               0x0
+#define PM2XXX_SWCTRL_SW               0x1
+
+
+/* LED Driver Control */
+#define PM2XXX_LED_CURRENT_MASK                0x0C
+#define PM2XXX_LED_CURRENT_2_5MA       (0X0<<2)
+#define PM2XXX_LED_CURRENT_1MA         (0X1<<2)
+#define PM2XXX_LED_CURRENT_5MA         (0X2<<2)
+#define PM2XXX_LED_CURRENT_10MA                (0X3<<2)
+
+#define PM2XXX_LED_SELECT_MASK         0x02
+#define PM2XXX_LED_SELECT_EN           (0X0<<1)
+#define PM2XXX_LED_SELECT_DIS          (0X1<<1)
+
+#define PM2XXX_ANTI_OVERSHOOT_MASK     0x01
+#define PM2XXX_ANTI_OVERSHOOT_DIS      0X0
+#define PM2XXX_ANTI_OVERSHOOT_EN       0X1
+
+#define to_pm2xxx_charger_ac_device_info(x) container_of((x), \
+               struct pm2xxx_charger, ac_chg)
+
+static int pm2xxx_interrupt_registers[] = {
+       PM2XXX_REG_INT1,
+       PM2XXX_REG_INT2,
+       PM2XXX_REG_INT3,
+       PM2XXX_REG_INT4,
+       PM2XXX_REG_INT5,
+       PM2XXX_REG_INT6,
+};
+
+enum pm2xxx_reg_int1 {
+       PM2XXX_INT1_ITVBATDISCONNECT    = 0x02,
+       PM2XXX_INT1_ITVBATLOWR          = 0x04,
+       PM2XXX_INT1_ITVBATLOWF          = 0x08,
+};
+
+enum pm2xxx_mask_reg_int1 {
+       PM2XXX_INT1_M_ITVBATDISCONNECT  = 0x02,
+       PM2XXX_INT1_M_ITVBATLOWR        = 0x04,
+       PM2XXX_INT1_M_ITVBATLOWF        = 0x08,
+};
+
+enum pm2xxx_source_reg_int1 {
+       PM2XXX_INT1_S_ITVBATDISCONNECT  = 0x02,
+       PM2XXX_INT1_S_ITVBATLOWR        = 0x04,
+       PM2XXX_INT1_S_ITVBATLOWF        = 0x08,
+};
+
+enum pm2xxx_reg_int2 {
+       PM2XXX_INT2_ITVPWR2PLUG         = 0x01,
+       PM2XXX_INT2_ITVPWR2UNPLUG       = 0x02,
+       PM2XXX_INT2_ITVPWR1PLUG         = 0x04,
+       PM2XXX_INT2_ITVPWR1UNPLUG       = 0x08,
+};
+
+enum pm2xxx_mask_reg_int2 {
+       PM2XXX_INT2_M_ITVPWR2PLUG       = 0x01,
+       PM2XXX_INT2_M_ITVPWR2UNPLUG     = 0x02,
+       PM2XXX_INT2_M_ITVPWR1PLUG       = 0x04,
+       PM2XXX_INT2_M_ITVPWR1UNPLUG     = 0x08,
+};
+
+enum pm2xxx_source_reg_int2 {
+       PM2XXX_INT2_S_ITVPWR2PLUG       = 0x03,
+       PM2XXX_INT2_S_ITVPWR1PLUG       = 0x0c,
+};
+
+enum pm2xxx_reg_int3 {
+       PM2XXX_INT3_ITCHPRECHARGEWD     = 0x01,
+       PM2XXX_INT3_ITCHCCWD            = 0x02,
+       PM2XXX_INT3_ITCHCVWD            = 0x04,
+       PM2XXX_INT3_ITAUTOTIMEOUTWD     = 0x08,
+};
+
+enum pm2xxx_mask_reg_int3 {
+       PM2XXX_INT3_M_ITCHPRECHARGEWD   = 0x01,
+       PM2XXX_INT3_M_ITCHCCWD          = 0x02,
+       PM2XXX_INT3_M_ITCHCVWD          = 0x04,
+       PM2XXX_INT3_M_ITAUTOTIMEOUTWD   = 0x08,
+};
+
+enum pm2xxx_source_reg_int3 {
+       PM2XXX_INT3_S_ITCHPRECHARGEWD   = 0x01,
+       PM2XXX_INT3_S_ITCHCCWD          = 0x02,
+       PM2XXX_INT3_S_ITCHCVWD          = 0x04,
+       PM2XXX_INT3_S_ITAUTOTIMEOUTWD   = 0x08,
+};
+
+enum pm2xxx_reg_int4 {
+       PM2XXX_INT4_ITBATTEMPCOLD       = 0x01,
+       PM2XXX_INT4_ITBATTEMPHOT        = 0x02,
+       PM2XXX_INT4_ITVPWR2OVV          = 0x04,
+       PM2XXX_INT4_ITVPWR1OVV          = 0x08,
+       PM2XXX_INT4_ITCHARGINGON        = 0x10,
+       PM2XXX_INT4_ITVRESUME           = 0x20,
+       PM2XXX_INT4_ITBATTFULL          = 0x40,
+       PM2XXX_INT4_ITCVPHASE           = 0x80,
+};
+
+enum pm2xxx_mask_reg_int4 {
+       PM2XXX_INT4_M_ITBATTEMPCOLD     = 0x01,
+       PM2XXX_INT4_M_ITBATTEMPHOT      = 0x02,
+       PM2XXX_INT4_M_ITVPWR2OVV        = 0x04,
+       PM2XXX_INT4_M_ITVPWR1OVV        = 0x08,
+       PM2XXX_INT4_M_ITCHARGINGON      = 0x10,
+       PM2XXX_INT4_M_ITVRESUME         = 0x20,
+       PM2XXX_INT4_M_ITBATTFULL        = 0x40,
+       PM2XXX_INT4_M_ITCVPHASE         = 0x80,
+};
+
+enum pm2xxx_source_reg_int4 {
+       PM2XXX_INT4_S_ITBATTEMPCOLD     = 0x01,
+       PM2XXX_INT4_S_ITBATTEMPHOT      = 0x02,
+       PM2XXX_INT4_S_ITVPWR2OVV        = 0x04,
+       PM2XXX_INT4_S_ITVPWR1OVV        = 0x08,
+       PM2XXX_INT4_S_ITCHARGINGON      = 0x10,
+       PM2XXX_INT4_S_ITVRESUME         = 0x20,
+       PM2XXX_INT4_S_ITBATTFULL        = 0x40,
+       PM2XXX_INT4_S_ITCVPHASE         = 0x80,
+};
+
+enum pm2xxx_reg_int5 {
+       PM2XXX_INT5_ITTHERMALSHUTDOWNRISE       = 0x01,
+       PM2XXX_INT5_ITTHERMALSHUTDOWNFALL       = 0x02,
+       PM2XXX_INT5_ITTHERMALWARNINGRISE        = 0x04,
+       PM2XXX_INT5_ITTHERMALWARNINGFALL        = 0x08,
+       PM2XXX_INT5_ITVSYSTEMOVV                = 0x10,
+};
+
+enum pm2xxx_mask_reg_int5 {
+       PM2XXX_INT5_M_ITTHERMALSHUTDOWNRISE     = 0x01,
+       PM2XXX_INT5_M_ITTHERMALSHUTDOWNFALL     = 0x02,
+       PM2XXX_INT5_M_ITTHERMALWARNINGRISE      = 0x04,
+       PM2XXX_INT5_M_ITTHERMALWARNINGFALL      = 0x08,
+       PM2XXX_INT5_M_ITVSYSTEMOVV              = 0x10,
+};
+
+enum pm2xxx_source_reg_int5 {
+       PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE     = 0x01,
+       PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL     = 0x02,
+       PM2XXX_INT5_S_ITTHERMALWARNINGRISE      = 0x04,
+       PM2XXX_INT5_S_ITTHERMALWARNINGFALL      = 0x08,
+       PM2XXX_INT5_S_ITVSYSTEMOVV              = 0x10,
+};
+
+enum pm2xxx_reg_int6 {
+       PM2XXX_INT6_ITVPWR2DROP         = 0x01,
+       PM2XXX_INT6_ITVPWR1DROP         = 0x02,
+       PM2XXX_INT6_ITVPWR2VALIDRISE    = 0x04,
+       PM2XXX_INT6_ITVPWR2VALIDFALL    = 0x08,
+       PM2XXX_INT6_ITVPWR1VALIDRISE    = 0x10,
+       PM2XXX_INT6_ITVPWR1VALIDFALL    = 0x20,
+};
+
+enum pm2xxx_mask_reg_int6 {
+       PM2XXX_INT6_M_ITVPWR2DROP       = 0x01,
+       PM2XXX_INT6_M_ITVPWR1DROP       = 0x02,
+       PM2XXX_INT6_M_ITVPWR2VALIDRISE  = 0x04,
+       PM2XXX_INT6_M_ITVPWR2VALIDFALL  = 0x08,
+       PM2XXX_INT6_M_ITVPWR1VALIDRISE  = 0x10,
+       PM2XXX_INT6_M_ITVPWR1VALIDFALL  = 0x20,
+};
+
+enum pm2xxx_source_reg_int6 {
+       PM2XXX_INT6_S_ITVPWR2DROP       = 0x01,
+       PM2XXX_INT6_S_ITVPWR1DROP       = 0x02,
+       PM2XXX_INT6_S_ITVPWR2VALIDRISE  = 0x04,
+       PM2XXX_INT6_S_ITVPWR2VALIDFALL  = 0x08,
+       PM2XXX_INT6_S_ITVPWR1VALIDRISE  = 0x10,
+       PM2XXX_INT6_S_ITVPWR1VALIDFALL  = 0x20,
+};
+
+static enum power_supply_property pm2xxx_charger_ac_props[] = {
+       POWER_SUPPLY_PROP_HEALTH,
+       POWER_SUPPLY_PROP_PRESENT,
+       POWER_SUPPLY_PROP_ONLINE,
+       POWER_SUPPLY_PROP_VOLTAGE_NOW,
+       POWER_SUPPLY_PROP_VOLTAGE_AVG,
+       POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+static int pm2xxx_charger_voltage_map[] = {
+       3500,
+       3525,
+       3550,
+       3575,
+       3600,
+       3625,
+       3650,
+       3675,
+       3700,
+       3725,
+       3750,
+       3775,
+       3800,
+       3825,
+       3850,
+       3875,
+       3900,
+       3925,
+       3950,
+       3975,
+       4000,
+       4025,
+       4050,
+       4075,
+       4100,
+       4125,
+       4150,
+       4175,
+       4200,
+       4225,
+       4250,
+       4275,
+       4300,
+};
+
+static int pm2xxx_charger_current_map[] = {
+       200,
+       200,
+       400,
+       600,
+       800,
+       1000,
+       1200,
+       1400,
+       1600,
+       1800,
+       2000,
+       2200,
+       2400,
+       2600,
+       2800,
+       3000,
+};
+
+struct pm2xxx_irq {
+       char *name;
+       irqreturn_t (*isr)(int irq, void *data);
+};
+
+struct pm2xxx_charger_info {
+       int charger_connected;
+       int charger_online;
+       int charger_voltage;
+       int cv_active;
+       bool wd_expired;
+};
+
+struct pm2xxx_charger_event_flags {
+       bool mainextchnotok;
+       bool main_thermal_prot;
+       bool ovv;
+       bool chgwdexp;
+};
+
+struct pm2xxx_config {
+       struct i2c_client *pm2xxx_i2c;
+       struct i2c_device_id *pm2xxx_id;
+};
+
+struct pm2xxx_charger {
+       struct device *dev;
+       u8 chip_id;
+       bool vddadc_en_ac;
+       struct pm2xxx_config config;
+       bool ac_conn;
+       unsigned int gpio_irq;
+       int vbat;
+       int old_vbat;
+       int failure_case;
+       int failure_input_ovv;
+       u8 pm2_int[6];
+       struct ab8500_gpadc *gpadc;
+       struct regulator *regu;
+       struct pm2xxx_bm_data *bat;
+       struct mutex lock;
+       struct ab8500 *parent;
+       struct pm2xxx_charger_info ac;
+       struct pm2xxx_charger_platform_data *pdata;
+       struct workqueue_struct *charger_wq;
+       struct delayed_work check_vbat_work;
+       struct work_struct ac_work;
+       struct work_struct check_main_thermal_prot_work;
+       struct ux500_charger ac_chg;
+       struct pm2xxx_charger_event_flags flags;
+};
+
+static const struct i2c_device_id pm2xxx_ident[] = {
+       { "pm2301", 0 },
+       { }
+};
+
+static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val)
+{
+       int ret;
+
+       ret = i2c_smbus_read_i2c_block_data(pm2->config.pm2xxx_i2c, reg,
+                               1, val);
+       if (ret < 0)
+               dev_err(pm2->dev, "Error reading register at 0x%x\n", reg);
+
+       return ret;
+}
+
+static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val)
+{
+       int ret;
+
+       ret = i2c_smbus_write_i2c_block_data(pm2->config.pm2xxx_i2c, reg,
+                               1, &val);
+       if (ret < 0)
+               dev_err(pm2->dev, "Error writing register at 0x%x\n", reg);
+
+       return ret;
+}
+
+static int pm2xxx_charging_enable_mngt(struct pm2xxx_charger *pm2)
+{
+       int ret;
+
+       /* Enable charging */
+       ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2,
+                       (PM2XXX_CH_AUTO_RESUME_EN | PM2XXX_CHARGER_ENA));
+
+       return ret;
+}
+
+static int pm2xxx_charging_disable_mngt(struct pm2xxx_charger *pm2)
+{
+       int ret;
+
+       /* Disable charging */
+       ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2,
+                       (PM2XXX_CH_AUTO_RESUME_DIS | PM2XXX_CHARGER_DIS));
+
+       return ret;
+}
+
+static int pm2xxx_charger_batt_therm_mngt(struct pm2xxx_charger *pm2, int val)
+{
+       queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work);
+
+       return 0;
+}
+
+
+int pm2xxx_charger_die_therm_mngt(struct pm2xxx_charger *pm2, int val)
+{
+       queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work);
+
+       return 0;
+}
+
+static int pm2xxx_charger_ovv_mngt(struct pm2xxx_charger *pm2, int val)
+{
+       int ret = 0;
+
+       pm2->failure_input_ovv++;
+       if (pm2->failure_input_ovv < 4) {
+               ret = pm2xxx_charging_enable_mngt(pm2);
+               goto out;
+       } else {
+               pm2->failure_input_ovv = 0;
+               dev_err(pm2->dev, "Overvoltage detected\n");
+               pm2->flags.ovv = true;
+               power_supply_changed(&pm2->ac_chg.psy);
+       }
+
+out:
+       return ret;
+}
+
+static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val)
+{
+       dev_dbg(pm2->dev , "20 minutes watchdog occured\n");
+
+       pm2->ac.wd_expired = true;
+       power_supply_changed(&pm2->ac_chg.psy);
+
+       return 0;
+}
+
+static int pm2xxx_charger_vbat_lsig_mngt(struct pm2xxx_charger *pm2, int val)
+{
+       switch (val) {
+       case PM2XXX_INT1_ITVBATLOWR:
+               dev_dbg(pm2->dev, "VBAT grows above VBAT_LOW level\n");
+               break;
+
+       case PM2XXX_INT1_ITVBATLOWF:
+               dev_dbg(pm2->dev, "VBAT drops below VBAT_LOW level\n");
+               break;
+
+       default:
+               dev_err(pm2->dev, "Unknown VBAT level\n");
+       }
+
+       return 0;
+}
+
+static int pm2xxx_charger_bat_disc_mngt(struct pm2xxx_charger *pm2, int val)
+{
+       dev_dbg(pm2->dev, "battery disconnected\n");
+
+       return (pm2xxx_charging_disable_mngt(pm2));
+}
+
+static int pm2xxx_charger_detection(struct pm2xxx_charger *pm2, u8 *val)
+{
+       int ret = 0;
+
+       ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT2, val);
+
+       if (ret < 0) {
+               dev_err(pm2->dev, "Charger detection failed\n");
+               goto out;
+       }
+
+       *val &= (PM2XXX_INT2_S_ITVPWR1PLUG | PM2XXX_INT2_S_ITVPWR2PLUG);
+out:
+       return ret;
+}
+
+static int pm2xxx_charger_itv_pwr_plug_mngt(struct pm2xxx_charger *pm2, int val)
+{
+
+       int ret;
+       u8 read_val;
+
+       /*
+        * Since we can't be sure that the events are received
+        * synchronously, we have the check if the main charger is
+        * connected by reading the interrupt source register.
+        */
+       ret = pm2xxx_charger_detection(pm2, &read_val);
+
+       if ((ret == 0) && read_val) {
+               pm2->ac.charger_connected = 1;
+               pm2->ac_conn = true;
+               queue_work(pm2->charger_wq, &pm2->ac_work);
+       }
+
+
+       return ret;
+}
+
+static int pm2xxx_charger_itv_pwr_unplug_mngt(struct pm2xxx_charger *pm2,
+                                                               int val)
+{
+       pm2->ac.charger_connected = 0;
+       queue_work(pm2->charger_wq, &pm2->ac_work);
+
+       return 0;
+}
+
+static int pm2_int_reg0(struct pm2xxx_charger *pm2)
+{
+       int ret = 0;
+
+       if (pm2->pm2_int[0] &
+                       (PM2XXX_INT1_ITVBATLOWR | PM2XXX_INT1_ITVBATLOWF)) {
+               ret = pm2xxx_charger_vbat_lsig_mngt(pm2, pm2->pm2_int[0] &
+                       (PM2XXX_INT1_ITVBATLOWR | PM2XXX_INT1_ITVBATLOWF));
+       }
+
+       if (pm2->pm2_int[0] & PM2XXX_INT1_ITVBATDISCONNECT) {
+               ret = pm2xxx_charger_bat_disc_mngt(pm2,
+                               PM2XXX_INT1_ITVBATDISCONNECT);
+       }
+
+       return ret;
+}
+
+static int pm2_int_reg1(struct pm2xxx_charger *pm2)
+{
+       int ret = 0;
+
+       if (pm2->pm2_int[1] &
+               (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)) {
+               dev_dbg(pm2->dev , "Main charger plugged\n");
+               ret = pm2xxx_charger_itv_pwr_plug_mngt(pm2, pm2->pm2_int[1] &
+                       (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG));
+       }
+
+       if (pm2->pm2_int[1] &
+               (PM2XXX_INT2_ITVPWR1UNPLUG | PM2XXX_INT2_ITVPWR2UNPLUG)) {
+               dev_dbg(pm2->dev , "Main charger unplugged\n");
+               ret = pm2xxx_charger_itv_pwr_unplug_mngt(pm2, pm2->pm2_int[1] &
+                                               (PM2XXX_INT2_ITVPWR1UNPLUG |
+                                               PM2XXX_INT2_ITVPWR2UNPLUG));
+       }
+
+       return ret;
+}
+
+static int pm2_int_reg2(struct pm2xxx_charger *pm2)
+{
+       int ret = 0;
+
+       if (pm2->pm2_int[2] & PM2XXX_INT3_ITAUTOTIMEOUTWD)
+               ret = pm2xxx_charger_wd_exp_mngt(pm2, pm2->pm2_int[2]);
+
+       if (pm2->pm2_int[2] & (PM2XXX_INT3_ITCHPRECHARGEWD |
+                               PM2XXX_INT3_ITCHCCWD | PM2XXX_INT3_ITCHCVWD)) {
+               dev_dbg(pm2->dev,
+                       "Watchdog occured for precharge, CC and CV charge\n");
+       }
+
+       return ret;
+}
+
+static int pm2_int_reg3(struct pm2xxx_charger *pm2)
+{
+       int ret = 0;
+
+       if (pm2->pm2_int[3] & (PM2XXX_INT4_ITCHARGINGON)) {
+               dev_dbg(pm2->dev ,
+                       "chargind operation has started\n");
+       }
+
+       if (pm2->pm2_int[3] & (PM2XXX_INT4_ITVRESUME)) {
+               dev_dbg(pm2->dev,
+                       "battery discharged down to VResume threshold\n");
+       }
+
+       if (pm2->pm2_int[3] & (PM2XXX_INT4_ITBATTFULL)) {
+               dev_dbg(pm2->dev , "battery fully detected\n");
+       }
+
+       if (pm2->pm2_int[3] & (PM2XXX_INT4_ITCVPHASE)) {
+               dev_dbg(pm2->dev, "CV phase enter with 0.5C charging\n");
+       }
+
+       if (pm2->pm2_int[3] &
+                       (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)) {
+               pm2->failure_case = VPWR_OVV;
+               ret = pm2xxx_charger_ovv_mngt(pm2, pm2->pm2_int[3] &
+                       (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV));
+               dev_dbg(pm2->dev, "VPWR/VSYSTEM overvoltage detected\n");
+       }
+
+       if (pm2->pm2_int[3] & (PM2XXX_INT4_S_ITBATTEMPCOLD |
+                               PM2XXX_INT4_S_ITBATTEMPHOT)) {
+               ret = pm2xxx_charger_batt_therm_mngt(pm2,
+                       pm2->pm2_int[3] & (PM2XXX_INT4_S_ITBATTEMPCOLD |
+                                       PM2XXX_INT4_S_ITBATTEMPHOT));
+               dev_dbg(pm2->dev, "BTEMP is too Low/High\n");
+       }
+
+       return ret;
+}
+
+static int pm2_int_reg4(struct pm2xxx_charger *pm2)
+{
+       int ret = 0;
+
+       if (pm2->pm2_int[4] & PM2XXX_INT5_ITVSYSTEMOVV) {
+               pm2->failure_case = VSYSTEM_OVV;
+               ret = pm2xxx_charger_ovv_mngt(pm2, pm2->pm2_int[4] &
+                                               PM2XXX_INT5_ITVSYSTEMOVV);
+               dev_dbg(pm2->dev, "VSYSTEM overvoltage detected\n");
+       }
+
+       if (pm2->pm2_int[4] & (PM2XXX_INT5_ITTHERMALWARNINGFALL |
+                               PM2XXX_INT5_ITTHERMALWARNINGRISE |
+                               PM2XXX_INT5_ITTHERMALSHUTDOWNFALL |
+                               PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)) {
+               dev_dbg(pm2->dev, "BTEMP die temperature is too Low/High\n");
+               ret = pm2xxx_charger_die_therm_mngt(pm2, pm2->pm2_int[4] &
+                       (PM2XXX_INT5_ITTHERMALWARNINGFALL |
+                       PM2XXX_INT5_ITTHERMALWARNINGRISE |
+                       PM2XXX_INT5_ITTHERMALSHUTDOWNFALL |
+                       PM2XXX_INT5_ITTHERMALSHUTDOWNRISE));
+       }
+
+       return ret;
+}
+
+static int pm2_int_reg5(struct pm2xxx_charger *pm2)
+{
+
+       if (pm2->pm2_int[5]
+               & (PM2XXX_INT6_ITVPWR2DROP | PM2XXX_INT6_ITVPWR1DROP)) {
+               dev_dbg(pm2->dev, "VMPWR drop to VBAT level\n");
+       }
+
+       if (pm2->pm2_int[5] & (PM2XXX_INT6_ITVPWR2VALIDRISE |
+                               PM2XXX_INT6_ITVPWR1VALIDRISE |
+                               PM2XXX_INT6_ITVPWR2VALIDFALL |
+                               PM2XXX_INT6_ITVPWR1VALIDFALL)) {
+               dev_dbg(pm2->dev, "Falling/Rising edge on WPWR1/2\n");
+       }
+
+       return 0;
+}
+
+static irqreturn_t  pm2xxx_irq_int(int irq, void *data)
+{
+       struct pm2xxx_charger *pm2 = data;
+       int ret, i;
+
+       for (i = 0; i < ARRAY_SIZE(pm2->pm2_int); i++) {
+               ret = pm2xxx_reg_read(pm2, pm2xxx_interrupt_registers[i],
+                               &(pm2->pm2_int[i]));
+       }
+
+       pm2_int_reg0(pm2);
+       pm2_int_reg1(pm2);
+       pm2_int_reg2(pm2);
+       pm2_int_reg3(pm2);
+       pm2_int_reg4(pm2);
+       pm2_int_reg5(pm2);
+
+       return IRQ_HANDLED;
+}
+
+static int pm2xxx_charger_get_ac_voltage(struct pm2xxx_charger *pm2)
+{
+       int vch = 0;
+
+       if (pm2->ac.charger_connected) {
+               vch = ab8500_gpadc_convert(pm2->gpadc, MAIN_CHARGER_V);
+               if (vch < 0)
+                       dev_err(pm2->dev, "%s gpadc conv failed,\n", __func__);
+       }
+
+       return vch;
+}
+
+static int pm2xxx_charger_get_ac_cv(struct pm2xxx_charger *pm2)
+{
+       int ret = 0;
+       u8 val;
+
+       if (pm2->ac.charger_connected && pm2->ac.charger_online) {
+
+               ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, &val);
+               if (ret < 0) {
+                       dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__);
+                       goto out;
+               }
+
+               if (val & PM2XXX_INT4_S_ITCVPHASE)
+                       ret = PM2XXX_CONST_VOLT;
+               else
+                       ret = PM2XXX_CONST_CURR;
+       }
+out:
+       return ret;
+}
+
+static int pm2xxx_charger_get_ac_current(struct pm2xxx_charger *pm2)
+{
+       int ich = 0;
+
+       if (pm2->ac.charger_online) {
+               ich = ab8500_gpadc_convert(pm2->gpadc, MAIN_CHARGER_C);
+               if (ich < 0)
+                       dev_err(pm2->dev, "%s gpadc conv failed\n", __func__);
+       }
+
+       return ich;
+}
+
+static int pm2xxx_current_to_regval(int curr)
+{
+       int i;
+
+       if (curr < pm2xxx_charger_current_map[0])
+               return 0;
+
+       for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_current_map); i++) {
+               if (curr < pm2xxx_charger_current_map[i])
+                       return (i - 1);
+       }
+
+       i = ARRAY_SIZE(pm2xxx_charger_current_map) - 1;
+       if (curr == pm2xxx_charger_current_map[i])
+               return i;
+       else
+               return -EINVAL;
+}
+
+static int pm2xxx_voltage_to_regval(int curr)
+{
+       int i;
+
+       if (curr < pm2xxx_charger_voltage_map[0])
+               return 0;
+
+       for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_voltage_map); i++) {
+               if (curr < pm2xxx_charger_voltage_map[i])
+                       return i - 1;
+       }
+
+       i = ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1;
+       if (curr == pm2xxx_charger_voltage_map[i])
+               return i;
+       else
+               return -EINVAL;
+}
+
+static int pm2xxx_charger_update_charger_current(struct ux500_charger *charger,
+               int ich_out)
+{
+       int ret;
+       int curr_index;
+       struct pm2xxx_charger *pm2;
+       u8 val;
+
+       if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS)
+               pm2 = to_pm2xxx_charger_ac_device_info(charger);
+       else
+               return -ENXIO;
+
+       curr_index = pm2xxx_current_to_regval(ich_out);
+       if (curr_index < 0) {
+               dev_err(pm2->dev,
+                       "Charger current too high: charging not started\n");
+               return -ENXIO;
+       }
+
+       ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val);
+       if (ret >= 0) {
+               val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK;
+               val |= curr_index;
+               ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val);
+               if (ret < 0) {
+                       dev_err(pm2->dev,
+                               "%s write failed\n", __func__);
+               }
+       }
+       else
+               dev_err(pm2->dev, "%s read failed\n", __func__);
+
+       return ret;
+}
+
+static int pm2xxx_charger_ac_get_property(struct power_supply *psy,
+       enum power_supply_property psp,
+       union power_supply_propval *val)
+{
+       struct pm2xxx_charger *pm2;
+
+       pm2 = to_pm2xxx_charger_ac_device_info(psy_to_ux500_charger(psy));
+
+       switch (psp) {
+       case POWER_SUPPLY_PROP_HEALTH:
+               if (pm2->flags.mainextchnotok)
+                       val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+               else if (pm2->ac.wd_expired)
+                       val->intval = POWER_SUPPLY_HEALTH_DEAD;
+               else if (pm2->flags.main_thermal_prot)
+                       val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+               else
+                       val->intval = POWER_SUPPLY_HEALTH_GOOD;
+               break;
+       case POWER_SUPPLY_PROP_ONLINE:
+               val->intval = pm2->ac.charger_online;
+               break;
+       case POWER_SUPPLY_PROP_PRESENT:
+               val->intval = pm2->ac.charger_connected;
+               break;
+       case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+               pm2->ac.charger_voltage = pm2xxx_charger_get_ac_voltage(pm2);
+               val->intval = pm2->ac.charger_voltage * 1000;
+               break;
+       case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+               pm2->ac.cv_active = pm2xxx_charger_get_ac_cv(pm2);
+               val->intval = pm2->ac.cv_active;
+               break;
+       case POWER_SUPPLY_PROP_CURRENT_NOW:
+               val->intval = pm2xxx_charger_get_ac_current(pm2) * 1000;
+               break;
+       default:
+               return -EINVAL;
+       }
+       return 0;
+}
+
+static int pm2xxx_charging_init(struct pm2xxx_charger *pm2)
+{
+       int ret = 0;
+
+       /* enable CC and CV watchdog */
+       ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG3,
+               (PM2XXX_CH_WD_CV_PHASE_60MIN | PM2XXX_CH_WD_CC_PHASE_60MIN));
+       if( ret < 0)
+               return ret;
+
+       /* enable precharge watchdog */
+       ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG4,
+                                       PM2XXX_CH_WD_PRECH_PHASE_60MIN);
+
+       return ret;
+}
+
+static int pm2xxx_charger_ac_en(struct ux500_charger *charger,
+       int enable, int vset, int iset)
+{
+       int ret;
+       int volt_index;
+       int curr_index;
+       u8 val;
+
+       struct pm2xxx_charger *pm2 = to_pm2xxx_charger_ac_device_info(charger);
+
+       if (enable) {
+               if (!pm2->ac.charger_connected) {
+                       dev_dbg(pm2->dev, "AC charger not connected\n");
+                       return -ENXIO;
+               }
+
+               dev_dbg(pm2->dev, "Enable AC: %dmV %dmA\n", vset, iset);
+               if (!pm2->vddadc_en_ac) {
+                       regulator_enable(pm2->regu);
+                       pm2->vddadc_en_ac = true;
+               }
+
+               ret = pm2xxx_charging_init(pm2);
+               if (ret < 0) {
+                       dev_err(pm2->dev, "%s charging init failed\n",
+                                       __func__);
+                       goto error_occured;
+               }
+
+               volt_index = pm2xxx_voltage_to_regval(vset);
+               curr_index = pm2xxx_current_to_regval(iset);
+
+               if (volt_index < 0 || curr_index < 0) {
+                       dev_err(pm2->dev,
+                               "Charger voltage or current too high, "
+                               "charging not started\n");
+                       return -ENXIO;
+               }
+
+               ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG8, &val);
+               if (ret >= 0) {
+                       val &= ~PM2XXX_CH_VOLT_MASK;
+                       val |= volt_index;
+                       ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, val);
+
+                       if (ret < 0) {
+                               dev_err(pm2->dev,
+                                       "%s write failed\n", __func__);
+                               goto error_occured;
+                       }
+               else
+                       dev_err(pm2->dev, "%s read failed\n", __func__);
+               }
+
+               ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val);
+               if (ret >= 0) {
+                       val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK;
+                       val |= curr_index;
+                       ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val);
+                       if (ret < 0) {
+                               dev_err(pm2->dev,
+                                       "%s write failed\n", __func__);
+                               goto error_occured;
+                       }
+               else
+                       dev_err(pm2->dev, "%s read failed\n", __func__);
+               }
+
+               if (!pm2->bat->enable_overshoot) {
+                       ret = pm2xxx_reg_read(pm2, PM2XXX_LED_CTRL_REG, &val);
+                       if (ret >= 0) {
+                               val |= PM2XXX_ANTI_OVERSHOOT_EN;
+                               ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG,
+                                                       val);
+                               if (ret < 0){
+                                       dev_err(pm2->dev, "%s write failed\n",
+                                                       __func__);
+                                       goto error_occured;
+                               }
+                       }
+               else
+                       dev_err(pm2->dev, "%s read failed\n", __func__);
+               }
+
+               ret = pm2xxx_charging_enable_mngt(pm2);
+               if (ret) {
+                       dev_err(pm2->dev, "%s write failed\n", __func__);
+                       goto error_occured;
+               }
+
+               pm2->ac.charger_online = 1;
+       } else {
+               pm2->ac.charger_online = 0;
+               pm2->ac.wd_expired = false;
+
+               /* Disable regulator if enabled */
+               if (pm2->vddadc_en_ac) {
+                       regulator_disable(pm2->regu);
+                       pm2->vddadc_en_ac = false;
+               }
+
+               ret = pm2xxx_charging_disable_mngt(pm2);
+               if (ret) {
+                       dev_err(pm2->dev, "%s write failed\n", __func__);
+                       return ret;
+               }
+
+               dev_dbg(pm2->dev, "PM2301: " "Disabled AC charging\n");
+       }
+       power_supply_changed(&pm2->ac_chg.psy);
+
+error_occured:
+       return ret;
+}
+
+static int pm2xxx_charger_watchdog_kick(struct ux500_charger *charger)
+{
+       int ret;
+       struct pm2xxx_charger *pm2;
+
+       if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS)
+               pm2 = to_pm2xxx_charger_ac_device_info(charger);
+       else
+               return -ENXIO;
+
+       ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_WD_KICK, WD_TIMER);
+       if (ret)
+               dev_err(pm2->dev, "Failed to kick WD!\n");
+
+       return ret;
+}
+
+static void pm2xxx_charger_ac_work(struct work_struct *work)
+{
+       struct pm2xxx_charger *pm2 = container_of(work,
+               struct pm2xxx_charger, ac_work);
+
+
+       power_supply_changed(&pm2->ac_chg.psy);
+       sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present");
+};
+
+static void pm2xxx_charger_check_main_thermal_prot_work(
+       struct work_struct *work)
+{
+};
+
+static struct pm2xxx_irq pm2xxx_charger_irq[] = {
+       {"PM2XXX_IRQ_INT", pm2xxx_irq_int},
+};
+
+static int pm2xxx_wall_charger_resume(struct i2c_client *i2c_client)
+{
+       return 0;
+}
+
+static int pm2xxx_wall_charger_suspend(struct i2c_client *i2c_client,
+       pm_message_t state)
+{
+       return 0;
+}
+
+static int __devinit pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
+               const struct i2c_device_id *id)
+{
+       struct pm2xxx_platform_data *pl_data = i2c_client->dev.platform_data;
+       struct pm2xxx_charger *pm2;
+       int ret = 0;
+       u8 val;
+
+       pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL);
+       if (!pm2) {
+               dev_err(pm2->dev, "pm2xxx_charger allocation failed\n");
+               return -ENOMEM;
+       }
+
+       /* get parent data */
+       pm2->dev = &i2c_client->dev;
+       pm2->gpadc = ab8500_gpadc_get("ab8500-gpadc.0");
+
+       /* get charger spcific platform data */
+       if (!pl_data->wall_charger) {
+               dev_err(pm2->dev, "no charger platform data supplied\n");
+               ret = -EINVAL;
+               goto free_device_info;
+       }
+
+       pm2->pdata = pl_data->wall_charger;
+
+       /* get battery specific platform data */
+       if (!pl_data->battery) {
+               dev_err(pm2->dev, "no battery platform data supplied\n");
+               ret = -EINVAL;
+               goto free_device_info;
+       }
+
+       pm2->bat = pl_data->battery;
+
+       if (!i2c_check_functionality(i2c_client->adapter,
+                       I2C_FUNC_SMBUS_BYTE_DATA |
+                       I2C_FUNC_SMBUS_READ_WORD_DATA)) {
+               ret = -ENODEV;
+               dev_info(pm2->dev, "pm2301 i2c_check_functionality failed\n");
+               goto free_device_info;
+       }
+
+       pm2->config.pm2xxx_i2c = i2c_client;
+       pm2->config.pm2xxx_id = (struct i2c_device_id *) id;
+       i2c_set_clientdata(i2c_client, pm2);
+
+       /* AC supply */
+       /* power_supply base class */
+       pm2->ac_chg.psy.name = pm2->pdata->label;
+       pm2->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS;
+       pm2->ac_chg.psy.properties = pm2xxx_charger_ac_props;
+       pm2->ac_chg.psy.num_properties = ARRAY_SIZE(pm2xxx_charger_ac_props);
+       pm2->ac_chg.psy.get_property = pm2xxx_charger_ac_get_property;
+       pm2->ac_chg.psy.supplied_to = pm2->pdata->supplied_to;
+       pm2->ac_chg.psy.num_supplicants = pm2->pdata->num_supplicants;
+       /* pm2xxx_charger sub-class */
+       pm2->ac_chg.ops.enable = &pm2xxx_charger_ac_en;
+       pm2->ac_chg.ops.kick_wd = &pm2xxx_charger_watchdog_kick;
+       pm2->ac_chg.ops.update_curr = &pm2xxx_charger_update_charger_current;
+       pm2->ac_chg.max_out_volt = pm2xxx_charger_voltage_map[
+               ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1];
+       pm2->ac_chg.max_out_curr = pm2xxx_charger_current_map[
+               ARRAY_SIZE(pm2xxx_charger_current_map) - 1];
+
+       /* Create a work queue for the charger */
+       pm2->charger_wq =
+               create_singlethread_workqueue("pm2xxx_charger_wq");
+       if (pm2->charger_wq == NULL) {
+               dev_err(pm2->dev, "failed to create work queue\n");
+               goto free_device_info;
+       }
+
+       /* Init work for charger detection */
+       INIT_WORK(&pm2->ac_work, pm2xxx_charger_ac_work);
+
+       /* Init work for checking HW status */
+       INIT_WORK(&pm2->check_main_thermal_prot_work,
+               pm2xxx_charger_check_main_thermal_prot_work);
+
+       /*
+        * VDD ADC supply needs to be enabled from this driver when there
+        * is a charger connected to avoid erroneous BTEMP_HIGH/LOW
+        * interrupts during charging
+        */
+       pm2->regu = regulator_get(pm2->dev, "vddadc");
+       if (IS_ERR(pm2->regu)) {
+               ret = PTR_ERR(pm2->regu);
+               dev_err(pm2->dev, "failed to get vddadc regulator\n");
+               goto free_charger_wq;
+       }
+
+       /* Register AC charger class */
+       ret = power_supply_register(pm2->dev, &pm2->ac_chg.psy);
+       if (ret) {
+               dev_err(pm2->dev, "failed to register AC charger\n");
+               goto free_regulator;
+       }
+
+       /* Register interrupts */
+       ret = request_threaded_irq(pm2->pdata->irq_number, NULL,
+                               pm2xxx_charger_irq[0].isr,
+                               pm2->pdata->irq_type,
+                               pm2xxx_charger_irq[0].name, pm2);
+
+       if (ret != 0) {
+               dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n",
+               pm2xxx_charger_irq[0].name, pm2->pdata->irq_number, ret);
+               goto unregister_pm2xxx_charger;
+       }
+
+       /*
+        * I2C Read/Write will fail, if AC adaptor is not connected.
+        * fix the charger detection mechanism.
+        */
+       ret = pm2xxx_charger_detection(pm2, &val);
+
+       if ((ret == 0) && val) {
+               pm2->ac.charger_connected = 1;
+               pm2->ac_conn = true;
+               power_supply_changed(&pm2->ac_chg.psy);
+               sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present");
+       }
+
+       return 0;
+
+unregister_pm2xxx_charger:
+       /* unregister power supply */
+       power_supply_unregister(&pm2->ac_chg.psy);
+free_regulator:
+       /* disable the regulator */
+       regulator_put(pm2->regu);
+free_charger_wq:
+       destroy_workqueue(pm2->charger_wq);
+free_device_info:
+       kfree(pm2);
+       return ret;
+}
+
+static int __devexit pm2xxx_wall_charger_remove(struct i2c_client *i2c_client)
+{
+       struct pm2xxx_charger *pm2 = i2c_get_clientdata(i2c_client);
+
+       /* Disable AC charging */
+       pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0);
+
+       /* Disable interrupts */
+       free_irq(pm2->pdata->irq_number, pm2);
+
+       /* Delete the work queue */
+       destroy_workqueue(pm2->charger_wq);
+
+       flush_scheduled_work();
+
+       /* disable the regulator */
+       regulator_put(pm2->regu);
+
+       power_supply_unregister(&pm2->ac_chg.psy);
+
+       kfree(pm2);
+
+       return 0;
+}
+
+static const struct i2c_device_id pm2xxx_id[] = {
+       { "pm2301", 0 },
+       { }
+};
+
+MODULE_DEVICE_TABLE(i2c, pm2xxx_id);
+
+static struct i2c_driver pm2xxx_charger_driver = {
+       .probe = pm2xxx_wall_charger_probe,
+       .remove = __devexit_p(pm2xxx_wall_charger_remove),
+       .suspend = pm2xxx_wall_charger_suspend,
+       .resume = pm2xxx_wall_charger_resume,
+       .driver = {
+               .name = "pm2xxx-wall_charger",
+               .owner = THIS_MODULE,
+       },
+       .id_table = pm2xxx_id,
+};
+
+static int __init pm2xxx_charger_init(void)
+{
+       return i2c_add_driver(&pm2xxx_charger_driver);
+}
+
+static void __exit pm2xxx_charger_exit(void)
+{
+       i2c_del_driver(&pm2xxx_charger_driver);
+}
+
+subsys_initcall_sync(pm2xxx_charger_init);
+module_exit(pm2xxx_charger_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay");
+MODULE_ALIAS("platform:pm2xxx-charger");
+MODULE_DESCRIPTION("PM2xxx charger management driver");
+
index e2a1e6d84f728821f5b9214f6e039fcf717fd400..a03d4fdf9c2c1fe26f06c4305fd231914570185a 100644 (file)
@@ -406,6 +406,8 @@ struct ab8500_charger_platform_data {
        char **supplied_to;
        size_t num_supplicants;
        bool autopower_cfg;
+       bool ac_enabled;
+       bool usb_enabled;
 };
 
 struct ab8500_btemp_platform_data {
index 9b07725750c90bc04374610b663fd90c53037f78..5b77a610c6b613989e12dff233727ed9f7934355 100644 (file)
@@ -27,12 +27,14 @@ struct ux500_charger_ops {
  * @ops                        ux500 charger operations
  * @max_out_volt       maximum output charger voltage in mV
  * @max_out_curr       maximum output charger current in mA
+ * @enabled            indicates if this charger is used or not
  */
 struct ux500_charger {
        struct power_supply psy;
        struct ux500_charger_ops ops;
        int max_out_volt;
        int max_out_curr;
+       bool enabled;
 };
 
 #endif
diff --git a/include/linux/pm2301_charger.h b/include/linux/pm2301_charger.h
new file mode 100644 (file)
index 0000000..16bb1d3
--- /dev/null
@@ -0,0 +1,60 @@
+/*
+ * PM2301 charger driver.
+ *
+ * Copyright (C) 2012 ST Ericsson Corporation
+ *
+ * Contact: Olivier LAUNAY (olivier.launay@stericsson.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef __LINUX_PM2301_H
+#define __LINUX_PM2301_H
+
+/**
+ * struct pm2xxx_bm_charger_parameters - Charger specific parameters
+ * @ac_volt_max:       maximum allowed AC charger voltage in mV
+ * @ac_curr_max:       maximum allowed AC charger current in mA
+ */
+struct pm2xxx_bm_charger_parameters {
+       int ac_volt_max;
+       int ac_curr_max;
+};
+
+/**
+ * struct pm2xxx_bm_data - pm2xxx battery management data
+ * @enable_overshoot    flag to enable VBAT overshoot control
+ * @chg_params   charger parameters
+ */
+struct pm2xxx_bm_data {
+       bool enable_overshoot;
+       const struct pm2xxx_bm_charger_parameters *chg_params;
+};
+
+struct pm2xxx_charger_platform_data {
+       char **supplied_to;
+       size_t num_supplicants;
+       int i2c_bus;
+       const char *label;
+       int irq_number;
+       int irq_type;
+};
+
+struct pm2xxx_platform_data {
+       struct pm2xxx_charger_platform_data *wall_charger;
+       struct pm2xxx_bm_data *battery;
+};
+
+#endif /* __LINUX_PM2301_H */