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/*
* MAX77665 charger Driver
*
* Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved.
* Author: Syed Rafiuddin <srafiuddin@nvidia.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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LINUX_INPUT_MAX77665_CHARGER_H
#define _LINUX_INPUT_MAX77665_CHARGER_H
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/regulator/machine.h>
#include <linux/extcon.h>
#include <linux/mfd/max77665.h>
#define MAX77665_CHG_INT 0xb0
#define MAX77665_CHG_INT_MASK 0xb1
#define MAX77665_CHG_INT_OK 0xb2
/* the bit def for above three registers is same per Maxim design */
#define BYP_BIT BIT(0)
#define DETBAT_BIT BIT(2)
#define BAT_BIT BIT(3)
#define CHG_BIT BIT(4)
#define CHGIN_BIT BIT(6)
#define MAX77665_CHG_DTLS_00 0xb3
#define CHGIN_DTLS_MASK(val) ((val & 0x60) >> 5)
#define CHGIN_DTLS_VALID 0x3
#define MAX77665_CHG_DTLS_01 0xb4
#define CHG_DTLS_MASK(val) ((val) & 0xF)
#define CHG_DTLS_PREQUALIFICATION_MODE 0x0
#define CHG_DTLS_FAST_CONSTANT_CURRENT_MODE 0x1
#define CHG_DTLS_FAST_CONSTANT_VOLTAGE_MODE 0x2
#define CHG_DTLS_TOP_OFF_MODE 0x3
#define CHG_DTLS_DONE_MODE 0x4
#define CHG_DTLS_HIGH_TEMP_CHG_MODE 0x5
#define CHG_DTLS_TIME_FAULT_MODE 0x6
#define CHG_DTLS_THERMISTOR_SUSPEND_FAULT_MODE 0x7
#define CHG_DTLS_CHG_OFF_INPUT_INVALID 0x8
#define CHG_DTLS_CHG_OFF_JUNCT_TEMP 0xA
#define CHG_DTLS_CHG_OFF_WDT_EXPIRE 0xB
#define BAT_DTLS_MASK(val) (((val) & 0x7F) >> 4)
#define BAT_DTLS_NO_BATTERY 0x0
#define BAT_DTLS_OVERCURRENT 0x6
#define MAX77665_CHG_DTLS_02 0xb5
#define BYP_DTLS_MASK(val) ((val) & 0xF)
#define BYP_DTLS_VALID 0x0
#define MAX77665_CHG_DTLS_03 0xb6
#define MAX77665_CHG_CNFG_00 0xb7
#define CHARGER_OFF_OTG_OFF_BUCK_ON_BOOST_OFF 0x04
#define CHARGER_ON_OTG_OFF_BUCK_ON_BOOST_OFF 0x05
#define CHARGER_OFF_OTG_ON_BUCK_OFF_BOOST_ON 0x2A
#define WDTEN (1 << 4)
#define MAX77665_CHG_CNFG_01 0xb8
#define FAST_CHARGE_DURATION_DISABLE (0x0 << 0)
#define FAST_CHARGE_DURATION_4HR (0x1 << 0)
#define FAST_CHARGE_DURATION_6HR (0x2 << 0)
#define FAST_CHARGE_DURATION_8HR (0x3 << 0)
#define FAST_CHARGE_DURATION_10HR (0x4 << 0)
#define FAST_CHARGE_DURATION_12HR (0x5 << 0)
#define FAST_CHARGE_DURATION_14HR (0x6 << 0)
#define FAST_CHARGE_DURATION_16HR (0x7 << 0)
#define CHARGER_RESTART_THRESHOLD_100mV (0x0 << 4)
#define CHARGER_RESTART_THRESHOLD_150mV (0x1 << 4)
#define CHARGER_RESTART_THRESHOLD_200mV (0x2 << 4)
#define CHARGER_RESTART_THRESHOLD_DISABLE (0x3 << 4)
#define LOW_BATTERY_PREQ_DISABLE (0x0 << 7)
#define LOW_BATTERY_PREQ_ENABLE (0x1 << 7)
#define MAX77665_CHG_CNFG_02 0xb9
#define MAX77665_CHG_CNFG_03 0xba
#define MAX77665_CHG_CNFG_04 0xbb
#define MAX77665_CHG_CNFG_05 0xbc
#define MAX77665_CHG_CNFG_06 0xbd
#define WDTCLR (1 << 0)
#define MAX77665_CHG_CNFG_07 0xbe
#define MAX77665_CHG_CNFG_08 0xbf
#define MAX77665_CHG_CNFG_09 0xc0
#define MIN_CURRENT_LIMIT_mA 60
#define CURRENT_STEP_mA 20
#define MAX77665_CHG_CNFG_10 0xc1
#define MAX77665_CHG_CNFG_11 0xc2
#define MAX77665_CHG_CNFG_12 0xc3
#define BAT_TO_SYS_OVERCURRENT_MASK 0x7
#define BAT_TO_SYS_OVERCURRENT_DISABLED (0x0 << 0)
#define BAT_TO_SYS_OVERCURRENT_3A00 (0x1 << 0)
#define BAT_TO_SYS_OVERCURRENT_3A25 (0x2 << 0)
#define BAT_TO_SYS_OVERCURRENT_3A50 (0x3 << 0)
#define BAT_TO_SYS_OVERCURRENT_3A75 (0x4 << 0)
#define BAT_TO_SYS_OVERCURRENT_4A00 (0x5 << 0)
#define BAT_TO_SYS_OVERCURRENT_4A25 (0x5 << 0)
#define BAT_TO_SYS_OVERCURRENT_4A75 (0x7 << 0)
#define VCHGIN_REGULATION_4V3 (0x0 << 3)
#define VCHGIN_REGULATION_4V7 (0x1 << 3)
#define VCHGIN_REGULATION_4V8 (0x2 << 3)
#define VCHGIN_REGULATION_4V9 (0x3 << 3)
#define CHARGER_LOW_POWER_MODE_OFF (0x0 << 7)
#define CHARGER_LOW_POWER_MODE_ON (0x1 << 7)
#define MAX77665_CHG_CNFG_13 0xc4
#define MAX77665_CHG_CNFG_14 0xc5
#define MAX77665_SAFEOUTCTRL 0xc6
#define ENSAFEOUT1 BIT(6)
#define ENSAFEOUT2 BIT(7)
#define MAX77665_WATCHDOG_TIMER_PERIOD_S 80
#define MAX_CABLES 6
enum max77665_mode {
OFF,
CHARGER,
OTG,
};
enum max77665_oc_alert_setting {
OC_DISABLED = BAT_TO_SYS_OVERCURRENT_DISABLED,
OC_3A00 = BAT_TO_SYS_OVERCURRENT_3A00,
OC_3A25 = BAT_TO_SYS_OVERCURRENT_3A25,
OC_3A50 = BAT_TO_SYS_OVERCURRENT_3A50,
OC_3A75 = BAT_TO_SYS_OVERCURRENT_3A75,
OC_4A00 = BAT_TO_SYS_OVERCURRENT_4A00,
OC_4A25 = BAT_TO_SYS_OVERCURRENT_4A25,
OC_4A75 = BAT_TO_SYS_OVERCURRENT_4A75
};
struct max77665_muic_platform_data {
const char *ext_conn_name;
};
struct max77665_charger_cable {
const char *extcon_name;
const char *name;
struct notifier_block nb;
struct max77665_charger *charger;
struct extcon_specific_cable_nb *extcon_dev;
struct delayed_work extcon_notifier_work;
long int event;
};
struct max77665_charger_plat_data {
uint32_t fast_chg_cc; /* fast charger current*/
uint32_t term_volt; /* charger termination voltage */
uint32_t curr_lim; /* input current limit */
uint8_t num_cables;
struct max77665_charger_cable *cables;
char *extcon_name;
struct regulator_consumer_supply *consumer_supplies;
int num_consumer_supplies;
void (*update_status)(int);
bool is_battery_present;
enum max77665_oc_alert_setting oc_alert;
};
static inline bool charging_is_on(int val)
{
switch (CHG_DTLS_MASK(val)) {
case CHG_DTLS_PREQUALIFICATION_MODE:
case CHG_DTLS_FAST_CONSTANT_CURRENT_MODE:
case CHG_DTLS_FAST_CONSTANT_VOLTAGE_MODE:
case CHG_DTLS_TOP_OFF_MODE:
case CHG_DTLS_HIGH_TEMP_CHG_MODE:
return true;
case CHG_DTLS_DONE_MODE:
/*
* Fall through:
* charger is in done mode after 30mins(Tto) in top-off mode,
* charging current will be 0 in this state.
*/
default:
return false;
}
}
#endif
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