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android / kernel / omap / refs/heads/glass-omap-xrr64b / . / drivers / power / twl6030_bci_battery.c
blob: 65b537faa497986b71fb157ed8ab0336639ae815 [file] [log] [blame]
/*
* linux/drivers/power/twl6030_bci_battery.c
*
* OMAP4:TWL6030 battery driver for Linux
*
* Copyright (C) 2008-2009 Texas Instruments, Inc.
* Author: Texas Instruments, Inc.
*
* This package 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 PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/i2c/twl.h>
#include <linux/power_supply.h>
#include <linux/i2c/twl6030-gpadc.h>
#include <linux/i2c/bq2415x.h>
#include <linux/wakelock.h>
#include <linux/usb/otg.h>
#define CONTROLLER_INT_MASK 0x00
#define CONTROLLER_CTRL1 0x01
#define CONTROLLER_WDG 0x02
#define CONTROLLER_STAT1 0x03
#define CHARGERUSB_INT_STATUS 0x04
#define CHARGERUSB_INT_MASK 0x05
#define CHARGERUSB_STATUS_INT1 0x06
#define CHARGERUSB_STATUS_INT2 0x07
#define CHARGERUSB_CTRL1 0x08
#define CHARGERUSB_CTRL2 0x09
#define CHARGERUSB_CTRL3 0x0A
#define CHARGERUSB_STAT1 0x0B
#define CHARGERUSB_VOREG 0x0C
#define CHARGERUSB_VICHRG 0x0D
#define CHARGERUSB_CINLIMIT 0x0E
#define CHARGERUSB_CTRLLIMIT1 0x0F
#define CHARGERUSB_CTRLLIMIT2 0x10
#define ANTICOLLAPSE_CTRL1 0x11
#define ANTICOLLAPSE_CTRL2 0x12
/* TWL6032 registers 0xDA to 0xDE - TWL6032_MODULE_CHARGER */
#define CONTROLLER_CTRL2 0x00
#define CONTROLLER_VSEL_COMP 0x01
#define CHARGERUSB_VSYSREG 0x02
#define CHARGERUSB_VICHRG_PC 0x03
#define LINEAR_CHRG_STS 0x04
/* TWL6032 Charger Mode Register */
#define CHARGER_MODE_REG 0xD4
#define CHARGER_MODE_POWERPATH BIT(3)
#define CHARGER_MODE_AUTOCHARGE BIT(6)
#define LINEAR_CHRG_STS_CRYSTL_OSC_OK 0x40
#define LINEAR_CHRG_STS_END_OF_CHARGE 0x20
#define LINEAR_CHRG_STS_VBATOV 0x10
#define LINEAR_CHRG_STS_VSYSOV 0x08
#define LINEAR_CHRG_STS_DPPM_STS 0x04
#define LINEAR_CHRG_STS_CV_STS 0x02
#define LINEAR_CHRG_STS_CC_STS 0x01
#define FG_REG_00 0x00
#define FG_REG_01 0x01
#define FG_REG_02 0x02
#define FG_REG_03 0x03
#define FG_REG_04 0x04
#define FG_REG_05 0x05
#define FG_REG_06 0x06
#define FG_REG_07 0x07
#define FG_REG_08 0x08
#define FG_REG_09 0x09
#define FG_REG_10 0x0A
#define FG_REG_11 0x0B
/* CONTROLLER_INT_MASK */
#define MVAC_FAULT (1 << 7)
#define MAC_EOC (1 << 6)
#define LINCH_GATED (1 << 5)
#define MBAT_REMOVED (1 << 4)
#define MFAULT_WDG (1 << 3)
#define MBAT_TEMP (1 << 2)
#define MVBUS_DET (1 << 1)
#define MVAC_DET (1 << 0)
/* CONTROLLER_CTRL1 */
#define CONTROLLER_CTRL1_EN_LINCH (1 << 5)
#define CONTROLLER_CTRL1_EN_CHARGER (1 << 4)
#define CONTROLLER_CTRL1_SEL_CHARGER (1 << 3)
/* CONTROLLER_STAT1 */
#define CONTROLLER_STAT1_EXTCHRG_STATZ (1 << 7)
#define CONTROLLER_STAT1_LINCH_GATED (1 << 6)
#define CONTROLLER_STAT1_CHRG_DET_N (1 << 5)
#define CONTROLLER_STAT1_FAULT_WDG (1 << 4)
#define CONTROLLER_STAT1_VAC_DET (1 << 3)
#define VAC_DET (1 << 3)
#define CONTROLLER_STAT1_VBUS_DET (1 << 2)
#define VBUS_DET (1 << 2)
#define CONTROLLER_STAT1_BAT_REMOVED (1 << 1)
#define CONTROLLER_STAT1_BAT_TEMP_OVRANGE (1 << 0)
/* CHARGERUSB_INT_STATUS */
#define EN_LINCH (1 << 4)
#define CURRENT_TERM_INT (1 << 3)
#define CHARGERUSB_STAT (1 << 2)
#define CHARGERUSB_THMREG (1 << 1)
#define CHARGERUSB_FAULT (1 << 0)
/* CHARGERUSB_INT_MASK */
#define MASK_MCURRENT_TERM (1 << 3)
#define MASK_MCHARGERUSB_STAT (1 << 2)
#define MASK_MCHARGERUSB_THMREG (1 << 1)
#define MASK_MCHARGERUSB_FAULT (1 << 0)
/* CHARGERUSB_STATUS_INT1 */
#define CHARGERUSB_STATUS_INT1_TMREG (1 << 7)
#define CHARGERUSB_STATUS_INT1_NO_BAT (1 << 6)
#define CHARGERUSB_STATUS_INT1_BST_OCP (1 << 5)
#define CHARGERUSB_STATUS_INT1_TH_SHUTD (1 << 4)
#define CHARGERUSB_STATUS_INT1_BAT_OVP (1 << 3)
#define CHARGERUSB_STATUS_INT1_POOR_SRC (1 << 2)
#define CHARGERUSB_STATUS_INT1_SLP_MODE (1 << 1)
#define CHARGERUSB_STATUS_INT1_VBUS_OVP (1 << 0)
/* CHARGERUSB_STATUS_INT2 */
#define ICCLOOP (1 << 3)
#define CURRENT_TERM (1 << 2)
#define CHARGE_DONE (1 << 1)
#define ANTICOLLAPSE (1 << 0)
/* CHARGERUSB_CTRL1 */
#define SUSPEND_BOOT (1 << 7)
#define OPA_MODE (1 << 6)
#define HZ_MODE (1 << 5)
#define TERM (1 << 4)
/* CHARGERUSB_CTRL2 */
#define CHARGERUSB_CTRL2_VITERM_50 (0 << 5)
#define CHARGERUSB_CTRL2_VITERM_100 (1 << 5)
#define CHARGERUSB_CTRL2_VITERM_150 (2 << 5)
#define CHARGERUSB_CTRL2_VITERM_400 (7 << 5)
/* CHARGERUSB_CTRL3 */
#define VBUSCHRG_LDO_OVRD (1 << 7)
#define CHARGE_ONCE (1 << 6)
#define BST_HW_PR_DIS (1 << 5)
#define AUTOSUPPLY (1 << 3)
#define BUCK_HSILIM (1 << 0)
/* CHARGERUSB_VOREG */
#define CHARGERUSB_VOREG_3P52 0x01
#define CHARGERUSB_VOREG_4P0 0x19
#define CHARGERUSB_VOREG_4P2 0x23
#define CHARGERUSB_VOREG_4P76 0x3F
/* CHARGERUSB_VICHRG */
#define CHARGERUSB_VICHRG_300 0x0
#define CHARGERUSB_VICHRG_500 0x4
#define CHARGERUSB_VICHRG_1500 0xE
/* CHARGERUSB_CINLIMIT */
#define CHARGERUSB_CIN_LIMIT_100 0x1
#define CHARGERUSB_CIN_LIMIT_300 0x5
#define CHARGERUSB_CIN_LIMIT_500 0x9
#define CHARGERUSB_CIN_LIMIT_NONE 0xF
/* CHARGERUSB_CTRLLIMIT1 */
#define VOREGL_4P16 0x21
#define VOREGL_4P56 0x35
/* CHARGERUSB_CTRLLIMIT2 */
#define CHARGERUSB_CTRLLIMIT2_1500 0x0E
#define LOCK_LIMIT (1 << 4)
/* ANTICOLLAPSE_CTRL2 */
#define BUCK_VTH_SHIFT 5
/* FG_REG_00 */
#define CC_ACTIVE_MODE_SHIFT 6
#define CC_AUTOCLEAR (1 << 2)
#define CC_CAL_EN (1 << 1)
#define CC_PAUSE (1 << 0)
#define REG_TOGGLE1 0x90
#define FGDITHS (1 << 7)
#define FGDITHR (1 << 6)
#define FGS (1 << 5)
#define FGR (1 << 4)
/* TWL6030_GPADC_CTRL */
#define GPADC_CTRL_TEMP1_EN (1 << 0) /* input ch 1 */
#define GPADC_CTRL_TEMP2_EN (1 << 1) /* input ch 4 */
#define GPADC_CTRL_SCALER_EN (1 << 2) /* input ch 2 */
#define GPADC_CTRL_SCALER_DIV4 (1 << 3)
#define GPADC_CTRL_SCALER_EN_CH11 (1 << 4) /* input ch 11 */
#define GPADC_CTRL_TEMP1_EN_MONITOR (1 << 5)
#define GPADC_CTRL_TEMP2_EN_MONITOR (1 << 6)
#define GPADC_CTRL_ISOURCE_EN (1 << 7)
#define GPADC_ISOURCE_22uA 22
#define GPADC_ISOURCE_7uA 7
/* TWL6030/6032 BATTERY VOLTAGE GPADC CHANNELS */
#define TWL6030_GPADC_VBAT_CHNL 0x07
#define TWL6032_GPADC_VBAT_CHNL 0x12
/* TWL6030_GPADC_CTRL2 */
#define GPADC_CTRL2_CH18_SCALER_EN BIT(2)
#define ENABLE_ISOURCE 0x80
#define REG_MISC1 0xE4
#define VAC_MEAS 0x04
#define VBAT_MEAS 0x02
#define BB_MEAS 0x01
#define REG_USB_VBUS_CTRL_SET 0x04
#define VBUS_MEAS 0x01
#define REG_USB_ID_CTRL_SET 0x06
#define ID_MEAS 0x01
#define BBSPOR_CFG 0xE6
#define BB_CHG_EN (1 << 3)
#define STS_HW_CONDITIONS 0x21
#define STS_USB_ID (1 << 2) /* Level status of USB ID */
#define BATTERY_RESISTOR 10000
#define SIMULATOR_RESISTOR 5000
#define BATTERY_DETECT_THRESHOLD ((BATTERY_RESISTOR + SIMULATOR_RESISTOR) / 2)
#define CHARGING_CAPACITY_UPDATE_PERIOD (1000 * 60 * 10)
/* To get VBUS input limit from twl6030_usb */
#if CONFIG_TWL6030_USB
extern unsigned int twl6030_get_usb_max_power(struct otg_transceiver *x);
#else
static inline unsigned int twl6030_get_usb_max_power(struct otg_transceiver *x)
{
return 0;
};
#endif
/* Ptr to thermistor table */
static const unsigned int fuelgauge_rate[4] = {1, 4, 16, 64};
static struct wake_lock chrg_lock;
struct twl6030_bci_device_info {
struct device *dev;
int voltage_mV;
int bk_voltage_mV;
int current_uA;
int current_avg_uA;
int temp_C;
int charge_status;
int vac_priority;
int bat_health;
int charger_source;
int fuelgauge_mode;
int timer_n2;
int timer_n1;
s32 charge_n1;
s32 charge_n2;
s16 cc_offset;
u8 usb_online;
u8 ac_online;
u8 stat1;
u8 linear_stat;
u8 status_int1;
u8 status_int2;
u8 gpadc_vbat_chnl;
u8 watchdog_duration;
u16 current_avg_interval;
u16 monitoring_interval;
unsigned int min_vbus;
unsigned int vbus_charge_thres;
struct twl4030_bci_platform_data *platform_data;
unsigned int charger_incurrentmA;
unsigned int charger_outcurrentmA;
unsigned long usb_max_power;
unsigned long event;
unsigned int capacity;
unsigned int capacity_debounce_count;
unsigned long ac_next_refresh;
unsigned int prev_capacity;
unsigned int wakelock_enabled;
struct power_supply bat;
struct power_supply usb;
struct power_supply ac;
struct power_supply bk_bat;
struct otg_transceiver *otg;
struct notifier_block nb;
struct work_struct usb_work;
struct delayed_work twl6030_bci_monitor_work;
struct delayed_work twl6030_current_avg_work;
unsigned long features;
unsigned long errata;
int use_hw_charger;
int use_power_path;
/* max scale current based on sense resitor */
int current_max_scale;
};
static BLOCKING_NOTIFIER_HEAD(notifier_list);
extern u32 wakeup_timer_seconds;
static void twl6030_config_min_vbus_reg(struct twl6030_bci_device_info *di,
unsigned int value)
{
u8 rd_reg = 0;
int ret;
/* not required on TWL6032 */
if (di->features & TWL6032_SUBCLASS)
return;
if (value > 4760 || value < 4200) {
dev_dbg(di->dev, "invalid min vbus\n");
return;
}
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &rd_reg,
ANTICOLLAPSE_CTRL2);
if (ret)
goto err;
rd_reg = rd_reg & 0x1F;
rd_reg = rd_reg | (((value - 4200)/80) << BUCK_VTH_SHIFT);
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, rd_reg,
ANTICOLLAPSE_CTRL2);
if (!ret)
return;
err:
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static void twl6030_config_iterm_reg(struct twl6030_bci_device_info *di,
unsigned int term_currentmA)
{
int ret;
if ((term_currentmA > 400) || (term_currentmA < 50)) {
dev_dbg(di->dev, "invalid termination current\n");
return;
}
term_currentmA = ((term_currentmA - 50)/50) << 5;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, term_currentmA,
CHARGERUSB_CTRL2);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static unsigned int twl6030_get_iterm_reg(struct twl6030_bci_device_info *di)
{
int ret;
unsigned int currentmA;
u8 val = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &val, CHARGERUSB_CTRL2);
if (ret) {
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
currentmA = 0;
} else
currentmA = 50 + (val >> 5) * 50;
return currentmA;
}
static void twl6030_config_voreg_reg(struct twl6030_bci_device_info *di,
unsigned int voltagemV)
{
int ret;
if ((voltagemV < 3500) || (voltagemV > 4760)) {
dev_dbg(di->dev, "invalid charger_voltagemV\n");
return;
}
voltagemV = (voltagemV - 3500) / 20;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, voltagemV,
CHARGERUSB_VOREG);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static unsigned int twl6030_get_voreg_reg(struct twl6030_bci_device_info *di)
{
int ret;
unsigned int voltagemV;
u8 val = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &val, CHARGERUSB_VOREG);
if (ret) {
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
voltagemV = 0;
} else
voltagemV = 3500 + (val * 20);
return voltagemV;
}
static void twl6030_config_vichrg_reg(struct twl6030_bci_device_info *di,
unsigned int currentmA)
{
int ret;
if ((currentmA >= 300) && (currentmA <= 450))
currentmA = (currentmA - 300) / 50;
else if ((currentmA >= 500) && (currentmA <= 1500))
currentmA = (currentmA - 500) / 100 + 4;
else {
dev_dbg(di->dev, "invalid charger_currentmA\n");
return;
}
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, currentmA,
CHARGERUSB_VICHRG);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static void twl6030_config_cinlimit_reg(struct twl6030_bci_device_info *di,
unsigned int currentmA)
{
int ret;
if ((currentmA >= 50) && (currentmA <= 750))
currentmA = (currentmA - 50) / 50;
else if ((currentmA > 750) && (currentmA <= 1500) &&
(di->features & TWL6032_SUBCLASS)) {
currentmA = ((currentmA % 100) ? 0x30 : 0x20) +
((currentmA - 100) / 100);
} else if (currentmA < 50) {
dev_dbg(di->dev, "invalid input current limit\n");
return;
} else {
/* This is no current limit */
currentmA = 0x0F;
}
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, currentmA,
CHARGERUSB_CINLIMIT);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static void twl6030_config_limit1_reg(struct twl6030_bci_device_info *di,
unsigned int voltagemV)
{
int ret;
if ((voltagemV < 3500) || (voltagemV > 4760)) {
dev_dbg(di->dev, "invalid max_charger_voltagemV\n");
return;
}
voltagemV = (voltagemV - 3500) / 20;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, voltagemV,
CHARGERUSB_CTRLLIMIT1);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static unsigned int twl6030_get_limit1_reg(struct twl6030_bci_device_info *di)
{
int ret;
unsigned int voltagemV;
u8 val = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &val,
CHARGERUSB_CTRLLIMIT1);
if (ret) {
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
voltagemV = 0;
} else
voltagemV = 3500 + (val * 20);
return voltagemV;
}
static void twl6030_config_limit2_reg(struct twl6030_bci_device_info *di,
unsigned int currentmA)
{
int ret;
if ((currentmA >= 300) && (currentmA <= 450))
currentmA = (currentmA - 300) / 50;
else if ((currentmA >= 500) && (currentmA <= 1500))
currentmA = (currentmA - 500) / 100 + 4;
else {
dev_dbg(di->dev, "invalid max_charger_currentmA\n");
return;
}
currentmA |= LOCK_LIMIT;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, currentmA,
CHARGERUSB_CTRLLIMIT2);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static const int vichrg[] = {
300, 350, 400, 450, 500, 600, 700, 800,
900, 1000, 1100, 1200, 1300, 1400, 1500, 300
};
static unsigned int twl6030_get_limit2_reg(struct twl6030_bci_device_info *di)
{
int ret;
unsigned int currentmA;
u8 val = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &val,
CHARGERUSB_CTRLLIMIT2);
if (ret) {
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
currentmA = 0;
} else
currentmA = vichrg[val & 0xF];
return currentmA;
}
/*
* Return channel value
* Or < 0 on failure.
*/
static int twl6030_get_gpadc_conversion(struct twl6030_bci_device_info *di,
int channel_no)
{
struct twl6030_gpadc_request req;
int temp = 0;
int ret;
req.channels = (1 << channel_no);
req.method = TWL6030_GPADC_SW2;
req.active = 0;
req.func_cb = NULL;
ret = twl6030_gpadc_conversion(&req);
if (ret < 0)
return ret;
if (req.rbuf[channel_no] > 0)
temp = req.rbuf[channel_no];
return temp;
}
static int is_battery_present(struct twl6030_bci_device_info *di)
{
int val;
static unsigned int current_src_val;
/*
* Prevent charging on batteries were id resistor is
* less than 5K.
*/
val = twl6030_get_gpadc_conversion(di, 0);
/*
* twl6030_get_gpadc_conversion for
* 6030 return resistance, for 6032 - voltage and
* it should be converted to resistance before
* using.
*/
if (!current_src_val) {
u8 reg = 0;
if (twl_i2c_read_u8(TWL_MODULE_MADC, &reg,
TWL6030_GPADC_CTRL))
pr_err("%s: Error reading TWL6030_GPADC_CTRL\n",
__func__);
current_src_val = (reg & GPADC_CTRL_ISOURCE_EN) ?
GPADC_ISOURCE_22uA :
GPADC_ISOURCE_7uA;
}
val = (val * 1000) / current_src_val;
if (val < BATTERY_DETECT_THRESHOLD)
return 0;
return 1;
}
static inline int twl6030_vbus_above_thres(struct twl6030_bci_device_info *di)
{
return (di->vbus_charge_thres < twl6030_get_gpadc_conversion(di, 10));
}
static void twl6030_stop_usb_charger(struct twl6030_bci_device_info *di)
{
int ret;
u8 reg = 0;
if (di->use_hw_charger) {
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &reg,
CHARGERUSB_CTRL1);
if (ret)
goto err;
reg |= HZ_MODE;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, reg,
CHARGERUSB_CTRL1);
if (ret)
goto err;
return;
}
di->charger_source = 0;
di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, 0, CONTROLLER_CTRL1);
err:
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static void twl6030_start_usb_charger_sw(struct twl6030_bci_device_info *di)
{
int ret;
u8 reg = 0;
if (!is_battery_present(di)) {
dev_dbg(di->dev, "BATTERY NOT DETECTED!\n");
return;
}
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS)
return;
if (!twl6030_vbus_above_thres(di)) {
twl6030_stop_usb_charger(di);
return;
}
dev_dbg(di->dev, "USB input current limit %dmA\n",
di->charger_incurrentmA);
if (di->charger_incurrentmA < 50) {
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER,
0, CONTROLLER_CTRL1);
if (ret)
goto err;
return;
}
twl6030_config_vichrg_reg(di, di->charger_outcurrentmA);
twl6030_config_cinlimit_reg(di, di->charger_incurrentmA);
twl6030_config_voreg_reg(di, di->platform_data->max_bat_voltagemV);
twl6030_config_iterm_reg(di, di->platform_data->termination_currentmA);
if (di->charger_incurrentmA >= 50) {
reg = CONTROLLER_CTRL1_EN_CHARGER;
if (di->use_power_path)
reg |= CONTROLLER_CTRL1_EN_LINCH;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, reg,
CONTROLLER_CTRL1);
if (ret)
goto err;
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
}
return;
err:
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static void twl6032_start_usb_charger_hw(struct twl6030_bci_device_info *di)
{
int ret;
u8 reg = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &reg,
CHARGERUSB_CTRL1);
if (ret)
goto err;
if (di->charger_incurrentmA < 50) {
reg |= HZ_MODE;
di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
} else {
reg &= ~HZ_MODE;
twl6030_config_cinlimit_reg(di, di->charger_incurrentmA);
}
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, reg,
CHARGERUSB_CTRL1);
if (ret)
goto err;
return;
err:
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
return;
}
static void twl6030_start_usb_charger(struct twl6030_bci_device_info *di)
{
if (di->use_hw_charger)
twl6032_start_usb_charger_hw(di);
else
twl6030_start_usb_charger_sw(di);
return;
}
static void twl6030_stop_ac_charger(struct twl6030_bci_device_info *di)
{
long int events;
int ret;
di->charger_source = 0;
di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
events = BQ2415x_STOP_CHARGING;
if (di->use_hw_charger)
return;
blocking_notifier_call_chain(&notifier_list, events, NULL);
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, 0, CONTROLLER_CTRL1);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
if (di->wakelock_enabled)
wake_unlock(&chrg_lock);
}
static void twl6030_start_ac_charger(struct twl6030_bci_device_info *di)
{
long int events;
int ret;
if (!is_battery_present(di)) {
dev_dbg(di->dev, "BATTERY NOT DETECTED!\n");
return;
}
dev_dbg(di->dev, "AC charger detected\n");
di->charger_source = POWER_SUPPLY_TYPE_MAINS;
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
events = BQ2415x_START_CHARGING;
if (di->use_hw_charger)
return;
blocking_notifier_call_chain(&notifier_list, events, NULL);
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER,
CONTROLLER_CTRL1_EN_CHARGER |
CONTROLLER_CTRL1_SEL_CHARGER,
CONTROLLER_CTRL1);
if (ret)
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
if (di->wakelock_enabled)
wake_lock(&chrg_lock);
}
static void twl6030_stop_charger(struct twl6030_bci_device_info *di)
{
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS)
twl6030_stop_ac_charger(di);
else if (di->charger_source == POWER_SUPPLY_TYPE_USB)
twl6030_stop_usb_charger(di);
}
static void twl6032_charger_ctrl_interrupt(struct twl6030_bci_device_info *di)
{
u8 stat_toggle, stat_reset, stat_set = 0;
u8 present_state = 0, linear_state;
u8 present_status = 0;
int err;
err = twl_i2c_read_u8(TWL6032_MODULE_CHARGER, &present_state,
LINEAR_CHRG_STS);
if (err < 0) {
dev_err(di->dev, "%s: Error access to TWL6030 (%d)\n",
__func__, err);
return;
}
err = twl_i2c_read_u8(TWL6032_MODULE_CHARGER, &present_status,
CHARGERUSB_INT_STATUS);
if (err < 0) {
dev_err(di->dev, "%s: Error access to TWL6030 (%d)\n",
__func__, err);
return;
}
linear_state = di->linear_stat;
stat_toggle = linear_state ^ present_state;
stat_set = stat_toggle & present_state;
stat_reset = stat_toggle & linear_state;
di->linear_stat = present_state;
if (stat_set & LINEAR_CHRG_STS_CRYSTL_OSC_OK)
dev_dbg(di->dev, "Linear status: CRYSTAL OSC OK\n");
if (present_state & LINEAR_CHRG_STS_END_OF_CHARGE) {
dev_dbg(di->dev, "Linear status: END OF CHARGE\n");
di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
}
if (present_status & EN_LINCH) {
dev_dbg(di->dev, "Linear status: START OF CHARGE\n");
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
}
if (stat_set & LINEAR_CHRG_STS_VBATOV) {
dev_dbg(di->dev, "Linear Status: VBATOV\n");
di->bat_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
}
if (stat_reset & LINEAR_CHRG_STS_VBATOV) {
dev_dbg(di->dev, "Linear Status: VBATOV\n");
di->bat_health = POWER_SUPPLY_HEALTH_GOOD;
}
if (stat_set & LINEAR_CHRG_STS_VSYSOV)
dev_dbg(di->dev, "Linear Status: VSYSOV\n");
if (stat_set & LINEAR_CHRG_STS_DPPM_STS)
dev_dbg(di->dev, "Linear Status: DPPM STS\n");
if (stat_set & LINEAR_CHRG_STS_CV_STS)
dev_dbg(di->dev, "Linear Status: CV STS\n");
if (stat_set & LINEAR_CHRG_STS_CC_STS)
dev_dbg(di->dev, "Linear Status: CC STS\n");
}
/*
* Interrupt service routine
*
* Attends to TWL 6030 power module interruptions events, specifically
* USB_PRES (USB charger presence) CHG_PRES (AC charger presence) events
*
*/
static irqreturn_t twl6030charger_ctrl_interrupt(int irq, void *_di)
{
struct twl6030_bci_device_info *di = _di;
int ret;
int charger_fault = 0;
long int events;
u8 stat_toggle, stat_reset, stat_set = 0;
u8 charge_state = 0;
u8 present_charge_state = 0;
u8 ac_or_vbus, no_ac_and_vbus = 0;
u8 hw_state = 0, temp = 0;
/* read charger controller_stat1 */
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &present_charge_state,
CONTROLLER_STAT1);
if (ret) {
/*
* Since present state read failed, charger_state is no
* longer valid, reset to zero inorder to detect next events
*/
charge_state = 0;
return IRQ_NONE;
}
ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &hw_state, STS_HW_CONDITIONS);
if (ret)
goto err;
charge_state = di->stat1;
stat_toggle = charge_state ^ present_charge_state;
stat_set = stat_toggle & present_charge_state;
stat_reset = stat_toggle & charge_state;
no_ac_and_vbus = !((present_charge_state) & (VBUS_DET | VAC_DET));
ac_or_vbus = charge_state & (VBUS_DET | VAC_DET);
if (no_ac_and_vbus && ac_or_vbus) {
di->charger_source = 0;
dev_dbg(di->dev, "No Charging source\n");
/* disable charging when no source present */
}
charge_state = present_charge_state;
di->stat1 = present_charge_state;
if ((charge_state & VAC_DET) &&
(charge_state & CONTROLLER_STAT1_EXTCHRG_STATZ)) {
events = BQ2415x_CHARGER_FAULT;
blocking_notifier_call_chain(&notifier_list, events, NULL);
}
if (stat_reset & VBUS_DET) {
/* On a USB detach, UNMASK VBUS OVP if masked*/
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &temp,
CHARGERUSB_INT_MASK);
if (ret)
goto err;
if (temp & MASK_MCHARGERUSB_FAULT) {
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER,
(temp & ~MASK_MCHARGERUSB_FAULT),
CHARGERUSB_INT_MASK);
if (ret)
goto err;
}
di->usb_online = 0;
dev_dbg(di->dev, "usb removed\n");
twl6030_stop_usb_charger(di);
if (present_charge_state & VAC_DET)
twl6030_start_ac_charger(di);
}
if (stat_set & VBUS_DET) {
/* In HOST mode (ID GROUND) when a device is connected,
* Mask VBUS OVP interrupt and do no enable usb
* charging
*/
if (hw_state & STS_USB_ID) {
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER,
&temp,
CHARGERUSB_INT_MASK);
if (ret)
goto err;
if (!(temp & MASK_MCHARGERUSB_FAULT)) {
ret = twl_i2c_write_u8(
TWL6030_MODULE_CHARGER,
(temp | MASK_MCHARGERUSB_FAULT),
CHARGERUSB_INT_MASK);
if (ret)
goto err;
}
} else {
di->usb_online = POWER_SUPPLY_TYPE_USB;
if ((present_charge_state & VAC_DET) &&
(di->vac_priority == 2))
dev_dbg(di->dev, "USB charger detected"
", continue with VAC\n");
else {
di->charger_source =
POWER_SUPPLY_TYPE_USB;
di->charge_status =
POWER_SUPPLY_STATUS_CHARGING;
}
dev_dbg(di->dev, "vbus detect\n");
}
}
if (stat_reset & VAC_DET) {
di->ac_online = 0;
dev_dbg(di->dev, "vac removed\n");
twl6030_stop_ac_charger(di);
if (present_charge_state & VBUS_DET) {
di->charger_source = POWER_SUPPLY_TYPE_USB;
di->charge_status =
POWER_SUPPLY_STATUS_CHARGING;
twl6030_start_usb_charger(di);
}
}
if (stat_set & VAC_DET) {
di->ac_online = POWER_SUPPLY_TYPE_MAINS;
if ((present_charge_state & VBUS_DET) &&
(di->vac_priority == 3))
dev_dbg(di->dev,
"AC charger detected"
", continue with VBUS\n");
else
twl6030_start_ac_charger(di);
}
if (stat_set & CONTROLLER_STAT1_FAULT_WDG) {
charger_fault = 1;
dev_dbg(di->dev, "Fault watchdog fired\n");
}
if (stat_reset & CONTROLLER_STAT1_FAULT_WDG)
dev_dbg(di->dev, "Fault watchdog recovered\n");
if (stat_set & CONTROLLER_STAT1_BAT_REMOVED)
dev_dbg(di->dev, "Battery removed\n");
if (stat_reset & CONTROLLER_STAT1_BAT_REMOVED)
dev_dbg(di->dev, "Battery inserted\n");
if (stat_set & CONTROLLER_STAT1_BAT_TEMP_OVRANGE) {
dev_dbg(di->dev, "Battery temperature overrange\n");
di->bat_health = POWER_SUPPLY_HEALTH_OVERHEAT;
}
if (stat_reset & CONTROLLER_STAT1_BAT_TEMP_OVRANGE) {
dev_dbg(di->dev, "Battery temperature within range\n");
di->bat_health = POWER_SUPPLY_HEALTH_GOOD;
}
if (di->features & TWL6032_SUBCLASS)
twl6032_charger_ctrl_interrupt(di);
if (charger_fault) {
twl6030_stop_usb_charger(di);
di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
dev_err(di->dev, "Charger Fault stop charging\n");
}
if (di->capacity != -1)
power_supply_changed(&di->bat);
else {
cancel_delayed_work(&di->twl6030_bci_monitor_work);
schedule_delayed_work(&di->twl6030_bci_monitor_work, 0);
}
err:
return IRQ_HANDLED;
}
static irqreturn_t twl6030charger_fault_interrupt(int irq, void *_di)
{
struct twl6030_bci_device_info *di = _di;
int charger_fault = 0;
int ret;
u8 usb_charge_sts = 0, usb_charge_sts1 = 0, usb_charge_sts2 = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &usb_charge_sts,
CHARGERUSB_INT_STATUS);
if (ret)
goto err;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &usb_charge_sts1,
CHARGERUSB_STATUS_INT1);
if (ret)
goto err;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &usb_charge_sts2,
CHARGERUSB_STATUS_INT2);
if (ret)
goto err;
di->status_int1 = usb_charge_sts1;
di->status_int2 = usb_charge_sts2;
if (usb_charge_sts & CURRENT_TERM_INT)
dev_dbg(di->dev, "USB CURRENT_TERM_INT\n");
if (usb_charge_sts & CHARGERUSB_THMREG)
dev_dbg(di->dev, "USB CHARGERUSB_THMREG\n");
if (usb_charge_sts & CHARGERUSB_FAULT)
dev_dbg(di->dev, "USB CHARGERUSB_FAULT\n");
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_TMREG)
dev_dbg(di->dev, "USB CHARGER Thermal regulation activated\n");
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_NO_BAT)
dev_dbg(di->dev, "No Battery Present\n");
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_BST_OCP)
dev_dbg(di->dev, "USB CHARGER Boost Over current protection\n");
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_TH_SHUTD) {
charger_fault = 1;
dev_dbg(di->dev, "USB CHARGER Thermal Shutdown\n");
}
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_BAT_OVP)
dev_dbg(di->dev, "USB CHARGER Bat Over Voltage Protection\n");
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_POOR_SRC)
dev_dbg(di->dev, "USB CHARGER Poor input source\n");
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_SLP_MODE)
dev_dbg(di->dev, "USB CHARGER Sleep mode\n");
if (usb_charge_sts1 & CHARGERUSB_STATUS_INT1_VBUS_OVP)
dev_dbg(di->dev, "USB CHARGER VBUS over voltage\n");
if (usb_charge_sts2 & CHARGE_DONE) {
di->charge_status = POWER_SUPPLY_STATUS_FULL;
dev_dbg(di->dev, "USB charge done\n");
}
if (usb_charge_sts2 & CURRENT_TERM)
dev_dbg(di->dev, "USB CURRENT_TERM\n");
if (usb_charge_sts2 & ICCLOOP)
dev_dbg(di->dev, "USB ICCLOOP\n");
if (usb_charge_sts2 & ANTICOLLAPSE)
dev_dbg(di->dev, "USB ANTICOLLAPSE\n");
if (charger_fault) {
twl6030_stop_usb_charger(di);
di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
dev_err(di->dev, "Charger Fault stop charging\n");
}
dev_dbg(di->dev, "Charger fault detected STS, INT1, INT2 %x %x %x\n",
usb_charge_sts, usb_charge_sts1, usb_charge_sts2);
power_supply_changed(&di->bat);
err:
return IRQ_HANDLED;
}
/*
* In HW charger mode on 6032 irq routines must only deal with updating
* state of charger. The hardware deals with start/stop conditions
* automatically.
*/
static irqreturn_t twl6032charger_ctrl_interrupt_hw(int irq, void *_di)
{
struct twl6030_bci_device_info *di = _di;
u8 stat1 = 0, linear = 0;
int charger_stop = 0, end_of_charge = 0;
int ret;
/* read charger controller_stat1 */
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &stat1,
CONTROLLER_STAT1);
if (ret)
goto out;
ret = twl_i2c_read_u8(TWL6032_MODULE_CHARGER, &linear,
LINEAR_CHRG_STS);
if (ret < 0)
goto out;
if (!(stat1 & (VBUS_DET | VAC_DET))) {
charger_stop = 1;
di->ac_online = di->usb_online = 0;
}
if (!(di->usb_online || di->ac_online)) {
if (stat1 & VBUS_DET) {
di->usb_online = 1;
di->bat_health = POWER_SUPPLY_HEALTH_GOOD;
} else if (stat1 & VAC_DET) {
di->ac_online = 1;
di->bat_health = POWER_SUPPLY_HEALTH_GOOD;
}
}
if (stat1 & CONTROLLER_STAT1_FAULT_WDG) {
charger_stop = 1;
di->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
dev_dbg(di->dev, "Charger error : Fault watchdog\n");
}
if (stat1 & CONTROLLER_STAT1_BAT_REMOVED) {
charger_stop = 1;
di->bat_health = POWER_SUPPLY_HEALTH_DEAD;
dev_dbg(di->dev, "Battery removed\n");
}
if (stat1 & CONTROLLER_STAT1_BAT_TEMP_OVRANGE) {
charger_stop = 1;
dev_dbg(di->dev,
"Charger error : Battery temperature overrange\n");
di->bat_health = POWER_SUPPLY_HEALTH_OVERHEAT;
}
if ((stat1 & CONTROLLER_STAT1_LINCH_GATED) &&
di->use_power_path) {
charger_stop = 1;
if (linear & LINEAR_CHRG_STS_CRYSTL_OSC_OK) {
di->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
dev_dbg(di->dev, "Charger error: CRYSTAL OSC OK\n");
}
if (linear & LINEAR_CHRG_STS_END_OF_CHARGE) {
end_of_charge = 1;
di->bat_health = POWER_SUPPLY_HEALTH_GOOD;
dev_dbg(di->dev, "Charger: Full charge\n");
}
if (linear & LINEAR_CHRG_STS_VBATOV) {
di->bat_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
dev_dbg(di->dev,
"Charger error : Linear Status: VBATOV\n");
}
if (linear & LINEAR_CHRG_STS_VSYSOV) {
di->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
dev_dbg(di->dev,
"Charger error : Linear Status: VSYSOV\n");
}
}
if (charger_stop) {
if (!(stat1 & (VBUS_DET | VAC_DET))) {
di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
} else {
if (end_of_charge)
di->charge_status =
POWER_SUPPLY_STATUS_FULL;
else
di->charge_status =
POWER_SUPPLY_STATUS_NOT_CHARGING;
}
}
power_supply_changed(&di->bat);
out:
return IRQ_HANDLED;
}
static irqreturn_t twl6032charger_fault_interrupt_hw(int irq, void *_di)
{
struct twl6030_bci_device_info *di = _di;
int charger_stop = 0, charger_start = 0;
int ret;
u8 sts = 0, sts_int1 = 0, sts_int2 = 0, stat1 = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &sts,
CHARGERUSB_INT_STATUS);
if (ret)
goto out;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &sts_int1,
CHARGERUSB_STATUS_INT1);
if (ret)
goto out;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &sts_int2,
CHARGERUSB_STATUS_INT2);
if (ret)
goto out;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &stat1,
CONTROLLER_STAT1);
if (ret)
goto out;
if (sts & EN_LINCH) {
charger_start = 1;
dev_dbg(di->dev, "Charger: EN_LINCH\n");
goto out;
}
if ((sts & CURRENT_TERM_INT) && !di->use_power_path) {
dev_dbg(di->dev, "Charger: CURRENT_TERM_INT\n");
if (sts_int2 & CURRENT_TERM) {
charger_stop = 1;
dev_dbg(di->dev, "Charger error: CURRENT_TERM\n");
}
}
if (sts & CHARGERUSB_STAT) {
dev_dbg(di->dev, "Charger: CHARGEUSB_STAT\n");
if (sts_int2 & ANTICOLLAPSE)
dev_dbg(di->dev, "Charger info: ANTICOLLAPSE\n");
}
if (sts & CHARGERUSB_THMREG) {
dev_dbg(di->dev, "Charger: CHARGERUSB_THMREG\n");
if (sts_int1 & CHARGERUSB_STATUS_INT1_TMREG)
dev_dbg(di->dev, "Charger error: TMREG\n");
}
if (sts & CHARGERUSB_FAULT) {
dev_dbg(di->dev, "Charger: CHARGERUSB_FAULT\n");
charger_stop = 1;
if (!di->use_power_path) {
if (sts_int1 & CHARGERUSB_STATUS_INT1_NO_BAT) {
di->bat_health = POWER_SUPPLY_HEALTH_DEAD;
dev_dbg(di->dev,
"Charger error : NO_BAT\n");
}
if (sts_int1 & CHARGERUSB_STATUS_INT1_BAT_OVP) {
di->bat_health =
POWER_SUPPLY_HEALTH_OVERVOLTAGE;
dev_dbg(di->dev, "Charger error : BAT_OVP\n");
}
}
if (sts_int1 & CHARGERUSB_STATUS_INT1_BST_OCP) {
di->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
dev_dbg(di->dev, "Charger error : BST_OCP\n");
}
if (sts_int1 & CHARGERUSB_STATUS_INT1_TH_SHUTD) {
di->bat_health = POWER_SUPPLY_HEALTH_OVERHEAT;
dev_dbg(di->dev, "Charger error : TH_SHUTD\n");
}
if (sts_int1 & CHARGERUSB_STATUS_INT1_POOR_SRC) {
di->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
dev_dbg(di->dev, "Charger error : POOR_SRC\n");
}
if (sts_int1 & CHARGERUSB_STATUS_INT1_SLP_MODE) {
di->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
dev_dbg(di->dev, "Charger error: SLP_MODE\n");
}
if (sts_int1 & CHARGERUSB_STATUS_INT1_VBUS_OVP) {
di->bat_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
dev_dbg(di->dev, "Charger error : VBUS_OVP\n");
}
}
if (charger_stop) {
if (!(stat1 & (VBUS_DET | VAC_DET)))
di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
else
di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
}
out:
if (charger_start) {
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
di->bat_health = POWER_SUPPLY_HEALTH_GOOD;
}
power_supply_changed(&di->bat);
return IRQ_HANDLED;
}
static void twl6030battery_current(struct twl6030_bci_device_info *di)
{
int ret = 0;
u16 read_value = 0;
s16 temp = 0;
int current_now = 0;
/* FG_REG_10, 11 is 14 bit signed instantaneous current sample value */
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *)&read_value,
FG_REG_10, 2);
if (ret < 0) {
dev_dbg(di->dev, "failed to read FG_REG_10: current_now\n");
return;
}
temp = ((s16)(read_value << 2) >> 2);
current_now = temp - di->cc_offset;
/* current drawn per sec */
current_now = current_now * fuelgauge_rate[di->fuelgauge_mode];
/* current in mAmperes */
current_now = (current_now * di->current_max_scale) >> 13;
/* current in uAmperes */
current_now = current_now * 1000;
di->current_uA = current_now;
return;
}
/*
* Setup the twl6030 BCI module to enable backup
* battery charging.
*/
static int twl6030backupbatt_setup(void)
{
int ret;
u8 rd_reg = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &rd_reg, BBSPOR_CFG);
if (ret)
return ret;
rd_reg |= BB_CHG_EN;
ret = twl_i2c_write_u8(TWL6030_MODULE_ID0, rd_reg, BBSPOR_CFG);
return ret;
}
/*
* Setup the twl6030 BCI module to measure battery
* temperature
*/
static int twl6030battery_temp_setup(bool enable)
{
int ret;
u8 rd_reg = 0;
ret = twl_i2c_read_u8(TWL_MODULE_MADC, &rd_reg, TWL6030_GPADC_CTRL);
if (ret)
return ret;
if (enable)
rd_reg |= (GPADC_CTRL_TEMP1_EN | GPADC_CTRL_TEMP2_EN |
GPADC_CTRL_TEMP1_EN_MONITOR |
GPADC_CTRL_TEMP2_EN_MONITOR | GPADC_CTRL_SCALER_DIV4);
else
rd_reg ^= (GPADC_CTRL_TEMP1_EN | GPADC_CTRL_TEMP2_EN |
GPADC_CTRL_TEMP1_EN_MONITOR |
GPADC_CTRL_TEMP2_EN_MONITOR | GPADC_CTRL_SCALER_DIV4);
ret = twl_i2c_write_u8(TWL_MODULE_MADC, rd_reg, TWL6030_GPADC_CTRL);
return ret;
}
static int twl6030battery_voltage_setup(struct twl6030_bci_device_info *di)
{
int ret;
u8 rd_reg = 0;
ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &rd_reg, REG_MISC1);
if (ret)
return ret;
rd_reg = rd_reg | VAC_MEAS | VBAT_MEAS | BB_MEAS;
ret = twl_i2c_write_u8(TWL6030_MODULE_ID0, rd_reg, REG_MISC1);
if (ret)
return ret;
ret = twl_i2c_read_u8(TWL_MODULE_USB, &rd_reg, REG_USB_VBUS_CTRL_SET);
if (ret)
return ret;
rd_reg = rd_reg | VBUS_MEAS;
ret = twl_i2c_write_u8(TWL_MODULE_USB, rd_reg, REG_USB_VBUS_CTRL_SET);
if (ret)
return ret;
ret = twl_i2c_read_u8(TWL_MODULE_USB, &rd_reg, REG_USB_ID_CTRL_SET);
if (ret)
return ret;
rd_reg = rd_reg | ID_MEAS;
ret = twl_i2c_write_u8(TWL_MODULE_USB, rd_reg, REG_USB_ID_CTRL_SET);
if (ret)
return ret;
if (di->features & TWL6032_SUBCLASS)
ret = twl_i2c_write_u8(TWL_MODULE_MADC,
GPADC_CTRL2_CH18_SCALER_EN,
TWL6030_GPADC_CTRL2);
return ret;
}
static int twl6030battery_current_setup(bool enable)
{
int ret = 0;
u8 reg = 0;
/*
* Writing 0 to REG_TOGGLE1 has no effect, so
* can directly set/reset FG.
*/
if (enable)
reg = FGDITHS | FGS;
else
reg = FGDITHR | FGR;
ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, reg, REG_TOGGLE1);
if (ret)
return ret;
ret = twl_i2c_write_u8(TWL6030_MODULE_GASGAUGE, CC_CAL_EN, FG_REG_00);
return ret;
}
static enum power_supply_property twl6030_bci_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_TEMP,
};
static enum power_supply_property twl6030_usb_props[] = {
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
};
static enum power_supply_property twl6030_ac_props[] = {
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
};
#ifndef CONFIG_ANDROID
static enum power_supply_property twl6030_bk_bci_battery_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
};
#else
static enum power_supply_property twl6030_bk_bci_battery_props[] = {};
#endif
static void twl6030_current_avg(struct work_struct *work)
{
s32 samples = 0;
s16 cc_offset = 0;
int current_avg_uA = 0;
int ret;
struct twl6030_bci_device_info *di = container_of(work,
struct twl6030_bci_device_info,
twl6030_current_avg_work.work);
di->charge_n2 = di->charge_n1;
di->timer_n2 = di->timer_n1;
/* FG_REG_01, 02, 03 is 24 bit unsigned sample counter value */
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &di->timer_n1,
FG_REG_01, 3);
if (ret < 0)
goto err;
/*
* FG_REG_04, 5, 6, 7 is 32 bit signed accumulator value
* accumulates instantaneous current value
*/
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &di->charge_n1,
FG_REG_04, 4);
if (ret < 0)
goto err;
/* FG_REG_08, 09 is 10 bit signed calibration offset value */
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &cc_offset,
FG_REG_08, 2);
if (ret < 0)
goto err;
cc_offset = ((s16)(cc_offset << 6) >> 6);
di->cc_offset = cc_offset;
samples = di->timer_n1 - di->timer_n2;
/* check for timer overflow */
if (di->timer_n1 < di->timer_n2)
samples = samples + (1 << 24);
/* offset is accumulative over number of samples */
cc_offset = cc_offset * samples;
current_avg_uA = ((di->charge_n1 - di->charge_n2 - cc_offset)
* di->current_max_scale) /
fuelgauge_rate[di->fuelgauge_mode];
/* clock is a fixed 32Khz */
current_avg_uA >>= 15;
/* Correct for the fuelguage sampling rate */
samples /= fuelgauge_rate[di->fuelgauge_mode] * 4;
/*
* Only update the current average if we have had a valid number
* of samples in the accumulation.
*/
if (samples) {
current_avg_uA = current_avg_uA / samples;
di->current_avg_uA = current_avg_uA * 1000;
}
schedule_delayed_work(&di->twl6030_current_avg_work,
msecs_to_jiffies(1000 * di->current_avg_interval));
return;
err:
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static int twl6030_usb_autogate_charger(struct twl6030_bci_device_info *di)
{
int ret = 0;
if ((di->charger_source == POWER_SUPPLY_TYPE_USB) &&
!twl6030_vbus_above_thres(di)) {
twl6030_stop_usb_charger(di);
if (di->ac_online == POWER_SUPPLY_TYPE_MAINS)
twl6030_start_ac_charger(di);
ret = 1;
} else if ((di->charger_source != POWER_SUPPLY_TYPE_MAINS) &&
(di->charger_source != POWER_SUPPLY_TYPE_USB) &&
di->usb_online) {
di->charger_source = POWER_SUPPLY_TYPE_USB;
twl6030_start_usb_charger(di);
ret = 1;
}
return ret;
}
static int capacity_changed(struct twl6030_bci_device_info *di)
{
int curr_capacity = di->capacity;
int charger_source = di->charger_source;
int charging_disabled = 0;
/* Because system load is always greater than
* termination current, we will never get a CHARGE DONE
* int from BQ. And charging will alwys be in progress.
* We consider Vbat>3900 to be a full battery.
* Since Voltage measured during charging is Voreg ~4.2v,
* we dont update capacity if we are charging.
*/
/* if it has been more than 10 minutes since our last update
* and we are charging we force a update.
*/
if (time_after(jiffies, di->ac_next_refresh)
&& (di->charger_source != POWER_SUPPLY_TYPE_BATTERY)) {
charging_disabled = 1;
di->ac_next_refresh = jiffies +
msecs_to_jiffies(CHARGING_CAPACITY_UPDATE_PERIOD);
di->capacity = -1;
/* We have to disable charging to read correct
* voltages.
*/
twl6030_stop_charger(di);
/*voltage setteling time*/
msleep(200);
di->voltage_mV = twl6030_get_gpadc_conversion(di,
di->gpadc_vbat_chnl);
}
/* Setting the capacity level only makes sense when on
* the battery is powering the board.
*/
if (di->charge_status == POWER_SUPPLY_STATUS_DISCHARGING) {
if (di->voltage_mV < 3500)
curr_capacity = 5;
else if (di->voltage_mV < 3600 && di->voltage_mV >= 3500)
curr_capacity = 20;
else if (di->voltage_mV < 3700 && di->voltage_mV >= 3600)
curr_capacity = 50;
else if (di->voltage_mV < 3800 && di->voltage_mV >= 3700)
curr_capacity = 75;
else if (di->voltage_mV < 3900 && di->voltage_mV >= 3800)
curr_capacity = 90;
else if (di->voltage_mV >= 3900)
curr_capacity = 100;
}
/* if we disabled charging to check capacity,
* enable it again after we read the
* correct voltage.
*/
if (charging_disabled) {
if (charger_source == POWER_SUPPLY_TYPE_MAINS)
twl6030_start_ac_charger(di);
else if (charger_source == POWER_SUPPLY_TYPE_USB)
twl6030_start_usb_charger(di);
}
/* if battery is not present we assume it is on battery simulator and
* current capacity is set to 100%
*/
if (!is_battery_present(di))
curr_capacity = 100;
/* Debouncing of voltage change. */
if (di->capacity == -1) {
di->capacity = curr_capacity;
di->capacity_debounce_count = 0;
return 1;
}
if (curr_capacity != di->prev_capacity) {
di->prev_capacity = curr_capacity;
di->capacity_debounce_count = 0;
} else if (++di->capacity_debounce_count >= 4) {
di->capacity = curr_capacity;
di->capacity_debounce_count = 0;
return 1;
}
return 0;
}
static int twl6030_set_watchdog(struct twl6030_bci_device_info *di, int val)
{
di->watchdog_duration = val;
dev_dbg(di->dev, "Watchdog reset %d", val);
return twl_i2c_write_u8(TWL6030_MODULE_CHARGER, val, CONTROLLER_WDG);
}
static void twl6030_bci_battery_work(struct work_struct *work)
{
struct twl6030_bci_device_info *di = container_of(work,
struct twl6030_bci_device_info, twl6030_bci_monitor_work.work);
struct twl6030_gpadc_request req;
int adc_code;
int temp;
int ret, ret1;
/* Kick the charger watchdog */
if (di->charge_status == POWER_SUPPLY_STATUS_CHARGING)
twl6030_set_watchdog(di, di->watchdog_duration);
req.method = TWL6030_GPADC_SW2;
req.channels = (1 << 1) | (1 << di->gpadc_vbat_chnl) | (1 << 8);
req.active = 0;
req.func_cb = NULL;
ret = twl6030_gpadc_conversion(&req);
schedule_delayed_work(&di->twl6030_bci_monitor_work,
msecs_to_jiffies(1000 * di->monitoring_interval));
if (ret < 0) {
dev_dbg(di->dev, "gpadc conversion failed: %d\n", ret);
return;
}
if (req.rbuf[di->gpadc_vbat_chnl] > 0)
di->voltage_mV = req.rbuf[di->gpadc_vbat_chnl];
if (req.rbuf[8] > 0)
di->bk_voltage_mV = req.rbuf[8];
if (di->platform_data->battery_tmp_tbl == NULL)
return;
adc_code = req.buf[1].code;
/*
* TWL6032 has 12-bit ADC, TWL6030 has 10-bit ADC,
* battery temperature table is calculated for the TWL6030.
* So reject two lower bits for TWL6032.
*/
if (di->features & TWL6032_SUBCLASS)
adc_code >>= 2;
for (temp = 0; temp < di->platform_data->tblsize; temp++) {
if (adc_code >= di->platform_data->
battery_tmp_tbl[temp])
break;
}
/* first 2 values are for negative temperature */
di->temp_C = (temp - 2) * 10; /* in tenths of degree Celsius */
ret = capacity_changed(di);
ret1 = twl6030_usb_autogate_charger(di);
if (ret || ret1)
power_supply_changed(&di->bat);
}
static void twl6030_current_mode_changed(struct twl6030_bci_device_info *di)
{
int ret;
/* FG_REG_01, 02, 03 is 24 bit unsigned sample counter value */
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &di->timer_n1,
FG_REG_01, 3);
if (ret < 0)
goto err;
/*
* FG_REG_04, 5, 6, 7 is 32 bit signed accumulator value
* accumulates instantaneous current value
*/
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &di->charge_n1,
FG_REG_04, 4);
if (ret < 0)
goto err;
cancel_delayed_work(&di->twl6030_current_avg_work);
schedule_delayed_work(&di->twl6030_current_avg_work,
msecs_to_jiffies(1000 * di->current_avg_interval));
return;
err:
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
}
static void twl6030_work_interval_changed(struct twl6030_bci_device_info *di)
{
cancel_delayed_work(&di->twl6030_bci_monitor_work);
schedule_delayed_work(&di->twl6030_bci_monitor_work,
msecs_to_jiffies(1000 * di->monitoring_interval));
}
#define to_twl6030_bci_device_info(x) container_of((x), \
struct twl6030_bci_device_info, bat);
static void twl6030_bci_battery_external_power_changed(struct power_supply *psy)
{
struct twl6030_bci_device_info *di = to_twl6030_bci_device_info(psy);
cancel_delayed_work(&di->twl6030_bci_monitor_work);
schedule_delayed_work(&di->twl6030_bci_monitor_work, 0);
}
#define to_twl6030_ac_device_info(x) container_of((x), \
struct twl6030_bci_device_info, ac);
static int twl6030_ac_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct twl6030_bci_device_info *di = to_twl6030_ac_device_info(psy);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = di->ac_online;
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = twl6030_get_gpadc_conversion(di, 9) * 1000;
break;
default:
return -EINVAL;
}
return 0;
}
#define to_twl6030_usb_device_info(x) container_of((x), \
struct twl6030_bci_device_info, usb);
static int twl6030_usb_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct twl6030_bci_device_info *di = to_twl6030_usb_device_info(psy);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = di->usb_online;
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = twl6030_get_gpadc_conversion(di, 10) * 1000;
break;
default:
return -EINVAL;
}
return 0;
}
#define to_twl6030_bk_bci_device_info(x) container_of((x), \
struct twl6030_bci_device_info, bk_bat);
static int twl6030_bk_bci_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct twl6030_bci_device_info *di = to_twl6030_bk_bci_device_info(psy);
switch (psp) {
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = di->bk_voltage_mV * 1000;
break;
default:
return -EINVAL;
}
return 0;
}
static int twl6030_bci_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct twl6030_bci_device_info *di;
di = to_twl6030_bci_device_info(psy);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = di->charge_status;
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
di->voltage_mV = twl6030_get_gpadc_conversion(di,
di->gpadc_vbat_chnl);
val->intval = di->voltage_mV * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
twl6030battery_current(di);
val->intval = di->current_uA;
break;
case POWER_SUPPLY_PROP_TEMP:
val->intval = di->temp_C;
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = di->charger_source;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
val->intval = di->current_avg_uA;
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = di->bat_health;
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = di->capacity;
break;
default:
return -EINVAL;
}
return 0;
}
int twl6030_register_notifier(struct notifier_block *nb,
unsigned int events)
{
return blocking_notifier_chain_register(&notifier_list, nb);
}
EXPORT_SYMBOL_GPL(twl6030_register_notifier);
int twl6030_unregister_notifier(struct notifier_block *nb,
unsigned int events)
{
return blocking_notifier_chain_unregister(&notifier_list, nb);
}
EXPORT_SYMBOL_GPL(twl6030_unregister_notifier);
static void twl6030_usb_charger_work(struct work_struct *work)
{
struct twl6030_bci_device_info *di =
container_of(work, struct twl6030_bci_device_info, usb_work);
switch (di->event) {
case USB_EVENT_CHARGER:
/* POWER_SUPPLY_TYPE_USB_DCP */
di->usb_online = POWER_SUPPLY_TYPE_USB_DCP;
di->charger_incurrentmA = 1800;
break;
case USB_EVENT_VBUS:
switch (di->usb_online) {
case POWER_SUPPLY_TYPE_USB_CDP:
/*
* Only 500mA here or high speed chirp
* handshaking may break
*/
di->charger_incurrentmA = 500;
case POWER_SUPPLY_TYPE_USB:
break;
}
break;
case USB_EVENT_NONE:
di->usb_online = 0;
di->charger_incurrentmA = 0;
break;
case USB_EVENT_ENUMERATED:
if (di->usb_online == POWER_SUPPLY_TYPE_USB_CDP)
di->charger_incurrentmA = 560;
else
di->charger_incurrentmA = di->usb_max_power;
break;
default:
return;
}
twl6030_start_usb_charger(di);
power_supply_changed(&di->usb);
}
static int twl6030_usb_notifier_call(struct notifier_block *nb,
unsigned long event, void *data)
{
struct twl6030_bci_device_info *di =
container_of(nb, struct twl6030_bci_device_info, nb);
di->event = event;
switch (event) {
case USB_EVENT_VBUS:
di->usb_online = *((unsigned int *) data);
break;
case USB_EVENT_ENUMERATED:
di->usb_max_power = *((unsigned int *) data);
break;
case USB_EVENT_CHARGER:
case USB_EVENT_NONE:
break;
case USB_EVENT_ID:
default:
return NOTIFY_OK;
}
schedule_work(&di->usb_work);
return NOTIFY_OK;
}
static ssize_t set_fg_mode(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
int ret;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val > 3))
return -EINVAL;
di->fuelgauge_mode = val;
ret = twl_i2c_write_u8(TWL6030_MODULE_GASGAUGE, (val << 6) | CC_CAL_EN,
FG_REG_00);
if (ret)
return -EIO;
twl6030_current_mode_changed(di);
return status;
}
static ssize_t show_fg_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->fuelgauge_mode;
return sprintf(buf, "%d\n", val);
}
static ssize_t set_charge_src(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 2) || (val > 3))
return -EINVAL;
di->vac_priority = val;
return status;
}
static ssize_t show_charge_src(struct device *dev,
struct device_attribute *attr, char *buf)
{
int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->vac_priority;
return sprintf(buf, "%d\n", val);
}
static ssize_t show_vbus_voltage(struct device *dev,
struct device_attribute *attr, char *buf)
{
int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = twl6030_get_gpadc_conversion(di, 10);
return sprintf(buf, "%d\n", val);
}
static ssize_t show_id_level(struct device *dev, struct device_attribute *attr,
char *buf)
{
int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = twl6030_get_gpadc_conversion(di, 14);
return sprintf(buf, "%d\n", val);
}
static ssize_t set_watchdog(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
int ret;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 1) || (val > 127))
return -EINVAL;
ret = twl6030_set_watchdog(di, val);
if (ret)
return -EIO;
return status;
}
static ssize_t show_watchdog(struct device *dev,
struct device_attribute *attr, char *buf)
{
int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->watchdog_duration;
return sprintf(buf, "%d\n", val);
}
static ssize_t show_fg_counter(struct device *dev,
struct device_attribute *attr, char *buf)
{
int fg_counter = 0;
int ret;
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &fg_counter,
FG_REG_01, 3);
if (ret < 0)
return -EIO;
return sprintf(buf, "%d\n", fg_counter);
}
static ssize_t show_fg_accumulator(struct device *dev,
struct device_attribute *attr, char *buf)
{
long fg_accum = 0;
int ret;
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &fg_accum,
FG_REG_04, 4);
if (ret > 0)
return -EIO;
return sprintf(buf, "%ld\n", fg_accum);
}
static ssize_t show_fg_offset(struct device *dev,
struct device_attribute *attr, char *buf)
{
s16 fg_offset = 0;
int ret;
ret = twl_i2c_read(TWL6030_MODULE_GASGAUGE, (u8 *) &fg_offset,
FG_REG_08, 2);
if (ret < 0)
return -EIO;
fg_offset = ((s16)(fg_offset << 6) >> 6);
return sprintf(buf, "%d\n", fg_offset);
}
static ssize_t set_fg_clear(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
long val;
int status = count;
int ret;
if ((strict_strtol(buf, 10, &val) < 0) || (val != 1))
return -EINVAL;
ret = twl_i2c_write_u8(TWL6030_MODULE_GASGAUGE, CC_AUTOCLEAR,
FG_REG_00);
if (ret)
return -EIO;
return status;
}
static ssize_t set_fg_cal(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
long val;
int status = count;
int ret;
if ((strict_strtol(buf, 10, &val) < 0) || (val != 1))
return -EINVAL;
ret = twl_i2c_write_u8(TWL6030_MODULE_GASGAUGE, CC_CAL_EN, FG_REG_00);
if (ret)
return -EIO;
return status;
}
static ssize_t set_charging(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if (strncmp(buf, "startac", 7) == 0) {
if (di->charger_source == POWER_SUPPLY_TYPE_USB)
twl6030_stop_usb_charger(di);
twl6030_start_ac_charger(di);
} else if (strncmp(buf, "startusb", 8) == 0) {
if (di->charger_source == POWER_SUPPLY_TYPE_MAINS)
twl6030_stop_ac_charger(di);
di->charger_source = POWER_SUPPLY_TYPE_USB;
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
twl6030_start_usb_charger(di);
} else if (strncmp(buf, "stop" , 4) == 0)
twl6030_stop_charger(di);
else
return -EINVAL;
return status;
}
static ssize_t set_regulation_voltage(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 3500)
|| (val > di->platform_data->max_charger_voltagemV))
return -EINVAL;
di->platform_data->max_bat_voltagemV = val;
twl6030_config_voreg_reg(di, val);
return status;
}
static ssize_t show_regulation_voltage(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->platform_data->max_bat_voltagemV;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_termination_current(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 50) || (val > 400))
return -EINVAL;
di->platform_data->termination_currentmA = val;
twl6030_config_iterm_reg(di, val);
return status;
}
static ssize_t show_termination_current(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->platform_data->termination_currentmA;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_cin_limit(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 50) || (val > 1500))
return -EINVAL;
di->charger_incurrentmA = val;
twl6030_config_cinlimit_reg(di, val);
return status;
}
static ssize_t show_cin_limit(struct device *dev, struct device_attribute *attr,
char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->charger_incurrentmA;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_charge_current(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 300)
|| (val > di->platform_data->max_charger_currentmA))
return -EINVAL;
di->charger_outcurrentmA = val;
twl6030_config_vichrg_reg(di, val);
return status;
}
static ssize_t show_charge_current(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->charger_outcurrentmA;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_min_vbus(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 4200) || (val > 4760))
return -EINVAL;
di->min_vbus = val;
twl6030_config_min_vbus_reg(di, val);
return status;
}
static ssize_t show_min_vbus(struct device *dev, struct device_attribute *attr,
char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->min_vbus;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_current_avg_interval(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 10) || (val > 3600))
return -EINVAL;
di->current_avg_interval = val;
twl6030_current_mode_changed(di);
return status;
}
static ssize_t show_current_avg_interval(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->current_avg_interval;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_wakelock_enable(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 0) || (val > 1))
return -EINVAL;
if ((val) && (di->charger_source == POWER_SUPPLY_TYPE_MAINS))
wake_lock(&chrg_lock);
else
wake_unlock(&chrg_lock);
di->wakelock_enabled = val;
return status;
}
static ssize_t show_wakelock_enable(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->wakelock_enabled;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_monitoring_interval(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
if ((strict_strtol(buf, 10, &val) < 0) || (val < 10) || (val > 3600))
return -EINVAL;
di->monitoring_interval = val;
twl6030_work_interval_changed(di);
return status;
}
static ssize_t show_monitoring_interval(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->monitoring_interval;
return sprintf(buf, "%u\n", val);
}
static ssize_t show_bsi(struct device *dev,
struct device_attribute *attr, char *buf)
{
int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = twl6030_get_gpadc_conversion(di, 0);
return sprintf(buf, "%d\n", val);
}
static ssize_t show_stat1(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->stat1;
return sprintf(buf, "%u\n", val);
}
static ssize_t show_status_int1(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->status_int1;
return sprintf(buf, "%u\n", val);
}
static ssize_t show_status_int2(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->status_int2;
return sprintf(buf, "%u\n", val);
}
static ssize_t show_vbus_charge_thres(struct device *dev,
struct device_attribute *attr, char *buf)
{
unsigned int val;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
val = di->vbus_charge_thres;
return sprintf(buf, "%u\n", val);
}
static ssize_t set_vbus_charge_thres(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
unsigned long val;
int status = count;
struct twl6030_bci_device_info *di = dev_get_drvdata(dev);
/*
* Revisit: add limit range checking
*/
if (strict_strtoul(buf, 10, &val) < 0)
return -EINVAL;
di->vbus_charge_thres = val & 0xffffffff;
cancel_delayed_work(&di->twl6030_bci_monitor_work);
schedule_delayed_work(&di->twl6030_bci_monitor_work, 0);
return status;
}
static DEVICE_ATTR(fg_mode, S_IWUSR | S_IRUGO, show_fg_mode, set_fg_mode);
static DEVICE_ATTR(charge_src, S_IWUSR | S_IRUGO, show_charge_src,
set_charge_src);
static DEVICE_ATTR(vbus_voltage, S_IRUGO, show_vbus_voltage, NULL);
static DEVICE_ATTR(id_level, S_IRUGO, show_id_level, NULL);
static DEVICE_ATTR(watchdog, S_IWUSR | S_IRUGO, show_watchdog, set_watchdog);
static DEVICE_ATTR(fg_counter, S_IRUGO, show_fg_counter, NULL);
static DEVICE_ATTR(fg_accumulator, S_IRUGO, show_fg_accumulator, NULL);
static DEVICE_ATTR(fg_offset, S_IRUGO, show_fg_offset, NULL);
static DEVICE_ATTR(fg_clear, S_IWUSR, NULL, set_fg_clear);
static DEVICE_ATTR(fg_cal, S_IWUSR, NULL, set_fg_cal);
static DEVICE_ATTR(charging, S_IWUSR | S_IRUGO, NULL, set_charging);
static DEVICE_ATTR(regulation_voltage, S_IWUSR | S_IRUGO,
show_regulation_voltage, set_regulation_voltage);
static DEVICE_ATTR(termination_current, S_IWUSR | S_IRUGO,
show_termination_current, set_termination_current);
static DEVICE_ATTR(cin_limit, S_IWUSR | S_IRUGO, show_cin_limit,
set_cin_limit);
static DEVICE_ATTR(charge_current, S_IWUSR | S_IRUGO, show_charge_current,
set_charge_current);
static DEVICE_ATTR(min_vbus, S_IWUSR | S_IRUGO, show_min_vbus, set_min_vbus);
static DEVICE_ATTR(monitoring_interval, S_IWUSR | S_IRUGO,
show_monitoring_interval, set_monitoring_interval);
static DEVICE_ATTR(current_avg_interval, S_IWUSR | S_IRUGO,
show_current_avg_interval, set_current_avg_interval);
static DEVICE_ATTR(wakelock_enable, S_IWUSR | S_IRUGO,
show_wakelock_enable, set_wakelock_enable);
static DEVICE_ATTR(bsi, S_IRUGO, show_bsi, NULL);
static DEVICE_ATTR(stat1, S_IRUGO, show_stat1, NULL);
static DEVICE_ATTR(status_int1, S_IRUGO, show_status_int1, NULL);
static DEVICE_ATTR(status_int2, S_IRUGO, show_status_int2, NULL);
static DEVICE_ATTR(vbus_charge_thres, S_IWUSR | S_IRUGO,
show_vbus_charge_thres, set_vbus_charge_thres);
static struct attribute *twl6030_bci_attributes[] = {
&dev_attr_fg_mode.attr,
&dev_attr_charge_src.attr,
&dev_attr_vbus_voltage.attr,
&dev_attr_id_level.attr,
&dev_attr_watchdog.attr,
&dev_attr_fg_counter.attr,
&dev_attr_fg_accumulator.attr,
&dev_attr_fg_offset.attr,
&dev_attr_fg_clear.attr,
&dev_attr_fg_cal.attr,
&dev_attr_charging.attr,
&dev_attr_regulation_voltage.attr,
&dev_attr_termination_current.attr,
&dev_attr_cin_limit.attr,
&dev_attr_charge_current.attr,
&dev_attr_min_vbus.attr,
&dev_attr_monitoring_interval.attr,
&dev_attr_current_avg_interval.attr,
&dev_attr_bsi.attr,
&dev_attr_stat1.attr,
&dev_attr_status_int1.attr,
&dev_attr_status_int2.attr,
&dev_attr_wakelock_enable.attr,
&dev_attr_vbus_charge_thres.attr,
NULL,
};
static const struct attribute_group twl6030_bci_attr_group = {
.attrs = twl6030_bci_attributes,
};
static char *twl6030_bci_supplied_to[] = {
"twl6030_battery",
};
static int __devinit twl6030_bci_battery_probe(struct platform_device *pdev)
{
struct twl4030_bci_platform_data *pdata = pdev->dev.platform_data;
struct twl6030_bci_device_info *di;
int irq;
int ret;
u8 controller_stat = 0;
u8 chargerusb_ctrl1 = 0;
u8 hw_state = 0;
u8 reg = 0;
if (!pdata) {
dev_dbg(&pdev->dev, "platform_data not available\n");
return -EINVAL;
}
di = kzalloc(sizeof(*di), GFP_KERNEL);
if (!di)
return -ENOMEM;
di->platform_data = kmemdup(pdata, sizeof(*pdata), GFP_KERNEL);
if (!di->platform_data) {
kfree(di);
return -ENOMEM;
}
if (pdata->monitoring_interval == 0) {
di->monitoring_interval = 10;
di->current_avg_interval = 10;
} else {
di->monitoring_interval = pdata->monitoring_interval;
di->current_avg_interval = pdata->monitoring_interval;
}
di->platform_data = pdata;
di->features = pdata->features;
di->errata = pdata->errata;
if (di->features & TWL6032_SUBCLASS) {
ret = twl_i2c_read_u8(TWL_MODULE_RTC, &reg, CHARGER_MODE_REG);
if (ret)
goto temp_setup_fail;
if (reg & CHARGER_MODE_POWERPATH) {
dev_dbg(di->dev, "Charger: PowerPath\n");
di->use_power_path = 1;
} else {
dev_dbg(di->dev, "Charger: NON PowerPath\n");
di->use_power_path = 0;
}
if (reg & CHARGER_MODE_AUTOCHARGE) {
dev_dbg(di->dev, "Charger: AutoCharge\n");
di->use_hw_charger = 1;
} else {
dev_dbg(di->dev, "Charger: NON AutoCharge\n");
di->use_hw_charger = 0;
}
} else {
di->use_power_path = 0;
di->use_hw_charger = 0;
}
if (di->use_hw_charger) {
di->platform_data->max_charger_currentmA =
twl6030_get_limit2_reg(di);
di->platform_data->max_charger_voltagemV =
twl6030_get_limit1_reg(di);
di->platform_data->termination_currentmA =
twl6030_get_iterm_reg(di);
di->platform_data->max_bat_voltagemV =
twl6030_get_voreg_reg(di);
}
di->bat.name = "twl6030_battery";
di->bat.supplied_to = twl6030_bci_supplied_to;
di->bat.num_supplicants = ARRAY_SIZE(twl6030_bci_supplied_to);
di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
di->bat.properties = twl6030_bci_battery_props;
di->bat.num_properties = ARRAY_SIZE(twl6030_bci_battery_props);
di->bat.get_property = twl6030_bci_battery_get_property;
di->bat.external_power_changed =
twl6030_bci_battery_external_power_changed;
di->bat_health = POWER_SUPPLY_HEALTH_GOOD;
di->usb.name = "twl6030_usb";
di->usb.type = POWER_SUPPLY_TYPE_USB;
di->usb.properties = twl6030_usb_props;
di->usb.num_properties = ARRAY_SIZE(twl6030_usb_props);
di->usb.get_property = twl6030_usb_get_property;
di->ac.name = "twl6030_ac";
di->ac.type = POWER_SUPPLY_TYPE_MAINS;
di->ac.properties = twl6030_ac_props;
di->ac.num_properties = ARRAY_SIZE(twl6030_ac_props);
di->ac.get_property = twl6030_ac_get_property;
di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
di->bk_bat.name = "twl6030_bk_battery";
di->bk_bat.type = POWER_SUPPLY_TYPE_BATTERY;
di->bk_bat.properties = twl6030_bk_bci_battery_props;
di->bk_bat.num_properties = ARRAY_SIZE(twl6030_bk_bci_battery_props);
di->bk_bat.get_property = twl6030_bk_bci_battery_get_property;
di->vac_priority = 2;
di->capacity = -1;
di->capacity_debounce_count = 0;
di->ac_next_refresh = jiffies - 1;
platform_set_drvdata(pdev, di);
/* calculate current max scale from sense */
if (pdata->sense_resistor_mohm) {
di->current_max_scale = (62000) / pdata->sense_resistor_mohm;
} else {
/* Set sensible defaults if platform data is missing */
if (di->features & TWL6032_SUBCLASS)
di->current_max_scale = 3100;
else
di->current_max_scale = 6200;
}
wake_lock_init(&chrg_lock, WAKE_LOCK_SUSPEND, "ac_chrg_wake_lock");
if (di->errata & TWL6032_ERRATA_DB00119490) {
/*
* Set Anti-collapse threshold correspond
* to the ERRATA DB00119490 (4.4 volts)
*/
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &reg,
ANTICOLLAPSE_CTRL1);
if (ret)
goto temp_setup_fail;
reg = reg & 0x1F;
reg = reg | ((0x3) << BUCK_VTH_SHIFT);
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, reg,
ANTICOLLAPSE_CTRL1);
if (ret)
goto temp_setup_fail;
}
/* settings for temperature sensing */
ret = twl6030battery_temp_setup(true);
if (ret)
goto temp_setup_fail;
/* request charger fault interruption choosing between sw/hw mode */
irq = platform_get_irq(pdev, 1);
if (!di->use_hw_charger)
ret = request_threaded_irq(irq, NULL,
twl6030charger_fault_interrupt,
0, "twl_bci_fault", di);
else
ret = request_threaded_irq(irq, NULL,
twl6032charger_fault_interrupt_hw,
0, "twl_bci_fault", di);
if (ret) {
dev_dbg(&pdev->dev, "could not request irq %d, status %d\n",
irq, ret);
goto temp_setup_fail;
}
/* request charger ctrl interruption choosing between sw/hw mode */
irq = platform_get_irq(pdev, 0);
if (!di->use_hw_charger)
ret = request_threaded_irq(irq, NULL,
twl6030charger_ctrl_interrupt,
0, "twl_bci_ctrl", di);
else
ret = request_threaded_irq(irq, NULL,
twl6032charger_ctrl_interrupt_hw,
0, "twl_bci_ctrl", di);
if (ret) {
dev_dbg(&pdev->dev, "could not request irq %d, status %d\n",
irq, ret);
goto chg_irq_fail;
}
ret = power_supply_register(&pdev->dev, &di->bat);
if (ret) {
dev_dbg(&pdev->dev, "failed to register main battery\n");
goto batt_failed;
}
ret = power_supply_register(&pdev->dev, &di->usb);
if (ret) {
dev_dbg(&pdev->dev, "failed to register usb power supply\n");
goto usb_failed;
}
ret = power_supply_register(&pdev->dev, &di->ac);
if (ret) {
dev_dbg(&pdev->dev, "failed to register ac power supply\n");
goto ac_failed;
}
ret = power_supply_register(&pdev->dev, &di->bk_bat);
if (ret) {
dev_dbg(&pdev->dev, "failed to register backup battery\n");
goto bk_batt_failed;
}
di->charge_n1 = 0;
di->timer_n1 = 0;
INIT_DELAYED_WORK_DEFERRABLE(&di->twl6030_bci_monitor_work,
twl6030_bci_battery_work);
INIT_DELAYED_WORK_DEFERRABLE(&di->twl6030_current_avg_work,
twl6030_current_avg);
ret = twl6030battery_voltage_setup(di);
if (ret)
dev_dbg(&pdev->dev, "voltage measurement setup failed\n");
ret = twl6030battery_current_setup(true);
if (ret)
dev_dbg(&pdev->dev, "current measurement setup failed\n");
/* initialize for USB charging */
if (!di->use_hw_charger) {
twl6030_config_limit1_reg(di, pdata->max_charger_voltagemV);
twl6030_config_limit2_reg(di,
di->platform_data->max_charger_currentmA);
}
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, MBAT_TEMP,
CONTROLLER_INT_MASK);
if (ret)
goto bk_batt_failed;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, MASK_MCHARGERUSB_THMREG,
CHARGERUSB_INT_MASK);
if (ret)
goto bk_batt_failed;
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &controller_stat,
CONTROLLER_STAT1);
if (ret)
goto bk_batt_failed;
di->stat1 = controller_stat;
di->charger_outcurrentmA = di->platform_data->max_charger_currentmA;
twl6030_set_watchdog(di, 32);
INIT_WORK(&di->usb_work, twl6030_usb_charger_work);
di->nb.notifier_call = twl6030_usb_notifier_call;
di->otg = otg_get_transceiver();
if (di->otg) {
ret = otg_register_notifier(di->otg, &di->nb);
if (ret)
dev_err(&pdev->dev, "otg register notifier"
" failed %d\n", ret);
} else
dev_err(&pdev->dev, "otg_get_transceiver failed %d\n", ret);
if (di->features & TWL6032_SUBCLASS) {
di->charger_incurrentmA = 100;
di->gpadc_vbat_chnl = TWL6032_GPADC_VBAT_CHNL;
} else {
di->charger_incurrentmA = twl6030_get_usb_max_power(di->otg);
di->gpadc_vbat_chnl = TWL6030_GPADC_VBAT_CHNL;
}
di->voltage_mV = twl6030_get_gpadc_conversion(di, di->gpadc_vbat_chnl);
dev_info(&pdev->dev, "Battery Voltage at Bootup is %d mV\n",
di->voltage_mV);
ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &hw_state, STS_HW_CONDITIONS);
if (ret)
goto bk_batt_failed;
if (!is_battery_present(di)) {
if (!(hw_state & STS_USB_ID)) {
dev_dbg(di->dev, "Put USB in HZ mode\n");
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER,
&chargerusb_ctrl1, CHARGERUSB_CTRL1);
if (ret)
goto bk_batt_failed;
chargerusb_ctrl1 |= HZ_MODE;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER,
chargerusb_ctrl1, CHARGERUSB_CTRL1);
if (ret)
goto bk_batt_failed;
}
} else if (!di->use_hw_charger) {
if (controller_stat & VAC_DET) {
di->ac_online = POWER_SUPPLY_TYPE_MAINS;
twl6030_start_ac_charger(di);
} else if (controller_stat & VBUS_DET) {
/*
* In HOST mode (ID GROUND) with a device connected,
* do no enable usb charging
*/
if (!(hw_state & STS_USB_ID)) {
di->usb_online = POWER_SUPPLY_TYPE_USB;
di->charger_source = POWER_SUPPLY_TYPE_USB;
di->charge_status =
POWER_SUPPLY_STATUS_CHARGING;
di->event = USB_EVENT_VBUS;
schedule_work(&di->usb_work);
}
}
} else {
int fault, charge_usb, charge_ac;
twl_i2c_read_u8(TWL6032_MODULE_CHARGER, &reg,
CHARGERUSB_INT_STATUS);
fault = !(di->stat1 & CONTROLLER_STAT1_LINCH_GATED) &&
!(di->stat1 & CONTROLLER_STAT1_FAULT_WDG);
charge_usb = (di->stat1 & VBUS_DET) &&
!(reg & CHARGERUSB_FAULT);
charge_ac = (di->stat1 & VAC_DET) &&
!(di->stat1 & CONTROLLER_STAT1_EXTCHRG_STATZ);
dev_dbg(di->dev, "boot charge state fault %d, usb %d, ac %d\n",
fault, charge_usb, charge_ac);
if (fault && (charge_usb || charge_ac))
di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
else {
if (di->stat1 & (VBUS_DET | VAC_DET))
di->charge_status =
POWER_SUPPLY_STATUS_NOT_CHARGING;
else
di->charge_status =
POWER_SUPPLY_STATUS_DISCHARGING;
}
}
ret = twl6030backupbatt_setup();
if (ret)
dev_dbg(&pdev->dev, "Backup Bat charging setup failed\n");
twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK,
REG_INT_MSK_LINE_C);
twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK,
REG_INT_MSK_STS_C);
twl6030_interrupt_unmask(TWL6030_CHARGER_FAULT_INT_MASK,
REG_INT_MSK_LINE_C);
twl6030_interrupt_unmask(TWL6030_CHARGER_FAULT_INT_MASK,
REG_INT_MSK_STS_C);
ret = sysfs_create_group(&pdev->dev.kobj, &twl6030_bci_attr_group);
if (ret)
dev_dbg(&pdev->dev, "could not create sysfs files\n");
schedule_delayed_work(&di->twl6030_bci_monitor_work, 0);
schedule_delayed_work(&di->twl6030_current_avg_work, 0);
return 0;
bk_batt_failed:
cancel_delayed_work(&di->twl6030_bci_monitor_work);
power_supply_unregister(&di->ac);
ac_failed:
power_supply_unregister(&di->usb);
usb_failed:
power_supply_unregister(&di->bat);
batt_failed:
free_irq(irq, di);
chg_irq_fail:
irq = platform_get_irq(pdev, 1);
free_irq(irq, di);
temp_setup_fail:
wake_lock_destroy(&chrg_lock);
platform_set_drvdata(pdev, NULL);
kfree(di);
return ret;
}
static int __devexit twl6030_bci_battery_remove(struct platform_device *pdev)
{
struct twl6030_bci_device_info *di = platform_get_drvdata(pdev);
int irq;
twl6030_interrupt_mask(TWL6030_CHARGER_CTRL_INT_MASK,
REG_INT_MSK_LINE_C);
twl6030_interrupt_mask(TWL6030_CHARGER_CTRL_INT_MASK,
REG_INT_MSK_STS_C);
twl6030_interrupt_mask(TWL6030_CHARGER_FAULT_INT_MASK,
REG_INT_MSK_LINE_C);
twl6030_interrupt_mask(TWL6030_CHARGER_FAULT_INT_MASK,
REG_INT_MSK_STS_C);
irq = platform_get_irq(pdev, 0);
free_irq(irq, di);
irq = platform_get_irq(pdev, 1);
free_irq(irq, di);
otg_unregister_notifier(di->otg, &di->nb);
sysfs_remove_group(&pdev->dev.kobj, &twl6030_bci_attr_group);
cancel_delayed_work(&di->twl6030_bci_monitor_work);
cancel_delayed_work(&di->twl6030_current_avg_work);
flush_scheduled_work();
power_supply_unregister(&di->bat);
power_supply_unregister(&di->usb);
power_supply_unregister(&di->ac);
power_supply_unregister(&di->bk_bat);
wake_lock_destroy(&chrg_lock);
platform_set_drvdata(pdev, NULL);
kfree(di->platform_data);
kfree(di);
return 0;
}
#ifdef CONFIG_PM
static int twl6030_bci_battery_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct twl6030_bci_device_info *di = platform_get_drvdata(pdev);
long int events;
u8 rd_reg = 0;
int ret;
/* mask to prevent wakeup due to 32s timeout from External charger */
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &rd_reg,
CONTROLLER_INT_MASK);
if (ret)
goto err;
rd_reg |= MVAC_FAULT;
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, MBAT_TEMP,
CONTROLLER_INT_MASK);
if (ret)
goto err;
cancel_delayed_work_sync(&di->twl6030_bci_monitor_work);
cancel_delayed_work_sync(&di->twl6030_current_avg_work);
/* We cannot tolarate a sleep longer than 30 seconds
* while on ac charging we have to reset the BQ watchdog timer.
*/
if ((di->charger_source == POWER_SUPPLY_TYPE_MAINS) &&
((wakeup_timer_seconds > 25) || !wakeup_timer_seconds)) {
wakeup_timer_seconds = 25;
}
/*reset the BQ watch dog*/
events = BQ2415x_RESET_TIMER;
blocking_notifier_call_chain(&notifier_list, events, NULL);
ret = twl6030battery_temp_setup(false);
if (ret) {
pr_err("%s: Temp measurement setup failed (%d)!\n",
__func__, ret);
return ret;
}
ret = twl6030battery_current_setup(false);
if (ret) {
pr_err("%s: Current measurement setup failed (%d)!\n",
__func__, ret);
return ret;
}
return 0;
err:
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
return ret;
}
static int twl6030_bci_battery_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct twl6030_bci_device_info *di = platform_get_drvdata(pdev);
long int events;
u8 rd_reg = 0;
int ret;
ret = twl6030battery_temp_setup(true);
if (ret) {
pr_err("%s: Temp measurement setup failed (%d)!\n",
__func__, ret);
return ret;
}
ret = twl6030battery_current_setup(true);
if (ret) {
pr_err("%s: Current measurement setup failed (%d)!\n",
__func__, ret);
return ret;
}
ret = twl_i2c_read_u8(TWL6030_MODULE_CHARGER, &rd_reg, CONTROLLER_INT_MASK);
if (ret)
goto err;
rd_reg &= ~(0xFF & MVAC_FAULT);
ret = twl_i2c_write_u8(TWL6030_MODULE_CHARGER, MBAT_TEMP,
CONTROLLER_INT_MASK);
if (ret)
goto err;
schedule_delayed_work(&di->twl6030_bci_monitor_work, 0);
schedule_delayed_work(&di->twl6030_current_avg_work, 50);
events = BQ2415x_RESET_TIMER;
blocking_notifier_call_chain(&notifier_list, events, NULL);
return 0;
err:
pr_err("%s: Error access to TWL6030 (%d)\n", __func__, ret);
return ret;
}
#else
#define twl6030_bci_battery_suspend NULL
#define twl6030_bci_battery_resume NULL
#endif /* CONFIG_PM */
static const struct dev_pm_ops pm_ops = {
.suspend = twl6030_bci_battery_suspend,
.resume = twl6030_bci_battery_resume,
};
static struct platform_driver twl6030_bci_battery_driver = {
.probe = twl6030_bci_battery_probe,
.remove = __devexit_p(twl6030_bci_battery_remove),
.driver = {
.name = "twl6030_bci",
.pm = &pm_ops,
},
};
static int __init twl6030_battery_init(void)
{
return platform_driver_register(&twl6030_bci_battery_driver);
}
module_init(twl6030_battery_init);
static void __exit twl6030_battery_exit(void)
{
platform_driver_unregister(&twl6030_bci_battery_driver);
}
module_exit(twl6030_battery_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:twl6030_bci");
MODULE_AUTHOR("Texas Instruments Inc");