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/* Copyright 2015 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Intersil ISL-9237 battery charger driver.
*/
#ifndef __CROS_EC_ISL9237_H
#define __CROS_EC_ISL9237_H
#define ISL9237_ADDR 0x12 /* 7bit address 0001001 */
/* Registers */
#define ISL9237_REG_CHG_CURRENT 0x14
#define ISL9237_REG_ADAPTER_CURRENT1 0x3f
#define ISL9237_REG_ADAPTER_CURRENT2 0x3b
#define ISL9237_REG_SYS_VOLTAGE_MAX 0x15
#define ISL9237_REG_SYS_VOLTAGE_MIN 0x3e
#define ISL9237_REG_PROCHOT_AC 0x47
#define ISL9237_REG_PROCHOT_DC 0x48
#define ISL9237_REG_T1_T2 0x38
#define ISL9237_REG_CONTROL1 0x3c
#define ISL9237_REG_CONTROL2 0x3d
#define ISL9237_REG_INFO 0x3a
#define ISL9237_REG_OTG_VOLTAGE 0x49
#define ISL9237_REG_OTG_CURRENT 0x4a
#define ISL9237_REG_MANUFACTURER_ID 0xfe
#define ISL9237_REG_DEVICE_ID 0xff
#define ISL9237_REG_PROCHOT_TIME 0x39
#define ISL9237_REG_CONTROL0 0x39
/* Sense resistor default values in mOhm */
#define ISL9237_DEFAULT_SENSE_RESISTOR_AC 20
#define ISL9237_DEFAULT_SENSE_RESISTOR 10
/* Maximum charging current register value */
#define ISL9237_CURRENT_REG_MAX 0x17c0 /* bit<12:2> 10111110000 */
/* 2-level adpater current limit duration T1 & T2 in micro seconds */
#define ISL9237_T1_10000 0x00
#define ISL9237_T1_20000 0x01
#define ISL9237_T1_15000 0x02
#define ISL9237_T1_5000 0x03
#define ISL9237_T1_1000 0x04
#define ISL9237_T1_500 0x05
#define ISL9237_T1_100 0x06
#define ISL9237_T1_0 0x07
#define ISL9237_T2_10 (0x00 << 8)
#define ISL9237_T2_100 (0x01 << 8)
#define ISL9237_T2_500 (0x02 << 8)
#define ISL9237_T2_1000 (0x03 << 8)
#define ISL9237_T2_300 (0x04 << 8)
#define ISL9237_T2_750 (0x05 << 8)
#define ISL9237_T2_2000 (0x06 << 8)
#define ISL9237_T2_10000 (0x07 << 8)
#define ISL9237_SYS_VOLTAGE_REG_MAX 13824
#define ISL9237_SYS_VOLTAGE_REG_MIN 2048
/* PROCHOT# debounce time and duration time in micro seconds */
#define ISL9237_PROCHOT_DURATION_10000 (0 << 6)
#define ISL9237_PROCHOT_DURATION_20000 (1 << 6)
#define ISL9237_PROCHOT_DURATION_15000 (2 << 6)
#define ISL9237_PROCHOT_DURATION_5000 (3 << 6)
#define ISL9237_PROCHOT_DURATION_1000 (4 << 6)
#define ISL9237_PROCHOT_DURATION_500 (5 << 6)
#define ISL9237_PROCHOT_DURATION_100000 (6 << 6)
#define ISL9237_PROCHOT_DURATION_0 (7 << 6)
#define ISL9237_PROCHOT_DURATION_MASK (7 << 6)
#define ISL9237_PROCHOT_DEBOUNCE_10 (0 << 9)
#define ISL9237_PROCHOT_DEBOUNCE_100 (1 << 9)
#define ISL9237_PROCHOT_DEBOUNCE_500 (2 << 9)
#define ISL9237_PROCHOT_DEBOUNCE_1000 (3 << 9)
#define ISL9237_PROCHOT_DEBOUNCE_MASK (3 << 9)
/* Maximum PROCHOT register value */
#define ISL9237_PROCHOT_AC_REG_MAX 6400
#define ISL9237_PROCHOT_DC_REG_MAX 12800
/* Control0: adapter voltage regulation reference */
#define ISL9237_C0_VREG_REF_3900 0
#define ISL9237_C0_VREG_REF_4200 1
#define ISL9237_C0_VREG_REF_4500 2
#define ISL9237_C0_VREG_REF_4800 3
#define ISL9237_C0_VREG_REF_MASK 0x03
/* Control0: disable adapter voltaqe regulation */
#define ISL9237_C0_DISABLE_VREG (1 << 2)
/* Control0: battery DCHOT reference for RS2 == 20mOhm */
#define ISL9237_C0_DCHOT_6A (0 << 3)
#define ISL9237_C0_DCHOT_5A (1 << 3)
#define ISL9237_C0_DCHOT_4A (2 << 3)
#define ISL9237_C0_DCHOT_3A (3 << 3)
#define ISL9237_C0_DCHOT_MASK (3 << 3)
/* Control1: general purpose comparator debounce time in micro second */
#define ISL9237_C1_GP_DEBOUNCE_2 (0 << 14)
#define ISL9237_C1_GP_DEBOUNCE_12 (1 << 14)
#define ISL9237_C1_GP_DEBOUNCE_2000 (2 << 14)
#define ISL9237_C1_GP_DEBOUNCE_5000000 (3 << 14)
#define ISL9237_C1_GP_DEBOUNCE_MASK (3 << 14)
/* Control1: learn mode */
#define ISL9237_C1_LEARN_MODE_AUTOEXIT (1 << 13)
#define ISL9237_C1_LEARN_MODE_ENABLE (1 << 12)
/* Control1: OTG enable */
#define ISL9237_C1_OTG (1 << 11)
/* Control1: audio filter */
#define ISL9237_C1_AUDIO_FILTER (1 << 10)
/* Control1: switch frequency */
#define ISL9237_C1_SWITCH_FREQ_PROG (0 << 7) /* 1000kHz or PROG */
#define ISL9237_C1_SWITCH_FREQ_913K (1 << 7)
#define ISL9237_C1_SWITCH_FREQ_839K (2 << 7)
#define ISL9237_C1_SWITCH_FREQ_777K (3 << 7)
#define ISL9237_C1_SWITCH_FREQ_723K (4 << 7)
#define ISL9237_C1_SWITCH_FREQ_676K (5 << 7)
#define ISL9237_C1_SWITCH_FREQ_635K (6 << 7)
#define ISL9237_C1_SWITCH_FREQ_599K (7 << 7)
#define ISL9237_C1_SWITCH_FREQ_MASK (7 << 7)
/* Control1: turbo mode */
#define ISL9237_C1_TURBO_MODE (1 << 6)
/* Control1: AMON & BMON */
#define ISL9237_C1_DISABLE_MON (1 << 5)
#define ISL9237_C1_SELECT_BMON (1 << 4)
/* Control1: PSYS, VSYS, VSYSLO */
#define ISL9237_C1_ENABLE_PSYS (1 << 3)
#define ISL9237_C1_ENABLE_VSYS (1 << 2)
#define ISL9237_C1_VSYSLO_REF_6000 0
#define ISL9237_C1_VSYSLO_REF_6300 1
#define ISL9237_C1_VSYSLO_REF_6600 2
#define ISL9237_C1_VSYSLO_REF_6900 3
#define ISL9237_C1_VSYSLO_REF_MASK 3
/* Control2: trickle charging current in mA */
#define ISL9237_C2_TRICKLE_256 (0 << 14)
#define ISL9237_C2_TRICKLE_128 (1 << 14)
#define ISL9237_C2_TRICKLE_64 (2 << 14)
#define ISL9237_C2_TRICKLE_512 (3 << 14)
#define ISL9237_C2_TRICKLE_MASK (3 << 14)
/* Control2: OTGEN debounce time in ms */
#define ISL9237_C2_OTG_DEBOUNCE_1300 (0 << 13)
#define ISL9237_C2_OTG_DEBOUNCE_150 (1 << 13)
#define ISL9237_C2_OTG_DEBOUNCE_MASK (1 << 13)
/* Control2: 2-level adapter over current */
#define ISL9237_C2_2LVL_OVERCURRENT (1 << 12)
/* Control2: adapter insertion debounce time in ms */
#define ISL9237_C2_ADAPTER_DEBOUNCE_1300 (0 << 11)
#define ISL9237_C2_ADAPTER_DEBOUNCE_150 (1 << 11)
#define ISL9237_C2_ADAPTER_DEBOUNCE_MASK (1 << 11)
/* Control2: PROCHOT debounce time in uS */
#define ISL9237_C2_PROCHOT_DEBOUNCE_10 (0 << 9)
#define ISL9237_C2_PROCHOT_DEBOUNCE_100 (1 << 9)
#define ISL9237_C2_PROCHOT_DEBOUNCE_500 (2 << 9)
#define ISL9237_C2_PROCHOT_DEBOUNCE_1000 (3 << 9)
#define ISL9237_C2_PROCHOT_DEBOUNCE_MASK (3 << 9)
/* Control2: min PROCHOT duration in uS */
#define ISL9237_C2_PROCHOT_DURATION_10000 (0 << 6)
#define ISL9237_C2_PROCHOT_DURATION_20000 (1 << 6)
#define ISL9237_C2_PROCHOT_DURATION_15000 (2 << 6)
#define ISL9237_C2_PROCHOT_DURATION_5000 (3 << 6)
#define ISL9237_C2_PROCHOT_DURATION_1000 (4 << 6)
#define ISL9237_C2_PROCHOT_DURATION_500 (5 << 6)
#define ISL9237_C2_PROCHOT_DURATION_100 (6 << 6)
#define ISL9237_C2_PROCHOT_DURATION_0 (7 << 6)
#define ISL9237_C2_PROCHOT_DURATION_MASK (7 << 6)
/* Control2: turn off ASGATE in OTG mode */
#define ISL9237_C2_ASGATE_OFF (1 << 5)
/* Control2: CMIN, general purpose comparator reference in mV */
#define ISL9237_C2_CMIN_2000 (0 << 4)
#define ISL9237_C2_CMIN_1200 (1 << 4)
/* Control2: general purpose comparator enable */
#define ISL9237_C2_COMPARATOR (1 << 3)
/* Control2: invert CMOUT, general purpose comparator output, polarity */
#define ISL9237_C2_INVERT_CMOUT (1 << 2)
/* Control2: disable WOC, way over current */
#define ISL9237_C2_WOC_OFF (1 << 1)
/* Control2: PSYS gain in uA/W */
#define ISL9237_C2_PSYS_GAIN (1 << 0)
/* OTG voltage limit in mV, current limit in mA */
#define ISL9237_OTG_VOLTAGE_MIN 4864
#define ISL9237_OTG_VOLTAGE_MAX 5376
#define ISL9237_OTG_CURRENT_MAX 4096
/* Info register fields */
#define ISL9237_INFO_PROG_RESISTOR_MASK 0xf
#define ISL9237_INFO_TRICKLE_ACTIVE_MASK (1 << 4)
#define ISL9237_INFO_PSTATE_SHIFT 5
#define ISL9237_INFO_PSTATE_MASK 3
enum isl9237_power_stage {
BUCK_MODE,
BOOST_MODE,
BUCK_BOOST_MODE,
REVERSE_BUCK_MODE
};
#define ISL9237_INFO_FSM_STATE_SHIFT 7
#define ISL9237_INFO_FSM_STATE_MASK 7
enum isl9237_fsm_state {
FSM_OFF,
FSM_BAT,
FSM_ADPT,
FSM_ACOK,
FSM_VSYS,
FSM_CHRG,
FSM_ENTOG,
FSM_OTG
};
#define ISL9237_INFO_VSYSLO (1 << 10)
#define ISL9237_INFO_DCHOT (1 << 11)
#define ISL9237_INFO_ACHOT (1 << 12)
#define CHARGER_NAME "isl9237"
#define CHARGE_V_MAX ISL9237_SYS_VOLTAGE_REG_MAX
#define CHARGE_V_MIN ISL9237_SYS_VOLTAGE_REG_MIN
#define CHARGE_V_STEP 8
#define CHARGE_I_MAX ISL9237_CURRENT_REG_MAX
#define CHARGE_I_MIN 4
#define CHARGE_I_OFF 0
#define CHARGE_I_STEP 4
#define INPUT_I_MAX ISL9237_CURRENT_REG_MAX
#define INPUT_I_MIN 4
#define INPUT_I_STEP 4
#define I2C_ADDR_CHARGER ISL9237_ADDR
#endif /* __CROS_EC_ISL9237_H */
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