| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright 2023 Google, LLC |
| * |
| * SW Support for MAX77779 IF-PMIC |
| */ |
| |
| #ifndef MAX77779_H_ |
| #define MAX77779_H_ |
| |
| #include <linux/i2c.h> |
| |
| //#define CONFIG_SCNPRINTF_DEBUG 0 |
| #include "max77779_regs.h" |
| |
| #define MAX77779_CHG_INT_COUNT 2 |
| |
| #define MAX77779_PMIC_REV_A0 0x01 |
| #define MAX77779_PMIC_REV_A1 0x02 |
| |
| #define MAX77779_PMIC_ID_SEQ 0x79 |
| #define MAX77779_PMIC_OF_NAME "max77779,pmic" |
| |
| /* FG's reg 0x40 and status value of 0x82 are not documented */ |
| #define MAX77779_FG_BOOT_CHECK_REG 0x40 |
| #define MAX77779_FG_BOOT_CHECK_SUCCESS 0x82 |
| |
| #define MAX77779_REASON_FIRMWARE "FW_UPDATE" |
| |
| |
| struct device* max77779_get_dev(struct device *dev, const char *name); |
| |
| /* write to a register */ |
| int max77779_external_chg_reg_write(struct device *dev, u8 reg, u8 value); |
| /* read a register */ |
| int max77779_external_chg_reg_read(struct device *dev, u8 reg, u8 *value); |
| /* update a register */ |
| int max77779_external_chg_reg_update(struct device *dev, u8 reg, u8 mask, u8 value); |
| /* change the mode register */ |
| int max77779_external_chg_mode_write(struct device *dev, enum max77779_charger_modes mode); |
| /* change the insel register */ |
| int max77779_external_chg_insel_write(struct device *dev, u8 mask, u8 value); |
| /* read the insel register */ |
| int max77779_external_chg_insel_read(struct device *dev, u8 *value); |
| |
| int max77779_external_pmic_reg_read(struct device *dev, uint8_t reg, uint8_t *val); |
| int max77779_external_pmic_reg_write(struct device *dev, uint8_t reg, uint8_t val); |
| int max77779_external_pmic_reg_update(struct device *dev, uint8_t reg, uint8_t msk, uint8_t val); |
| |
| int max77779_external_fg_reg_read(struct device *dev, uint16_t reg, uint16_t *val); |
| int max77779_external_fg_reg_write(struct device *dev, uint16_t reg, uint16_t val); |
| |
| int max77779_external_vimon_reg_read(struct device *dev, uint16_t reg, void *val, int len); |
| int max77779_external_vimon_reg_write(struct device *dev, uint16_t reg, const void *val, int len); |
| int max77779_external_vimon_read_buffer(struct device *dev, uint16_t *buff, size_t *count, |
| size_t buff_max); |
| int max77779_external_vimon_enable(struct device *dev, bool enable); |
| |
| int max77779_fg_enable_firmware_update(struct device *dev, bool enable); |
| |
| static inline int max77779_read_batt_conn(struct device *dev, int *temp) |
| { |
| return -ENODEV; |
| } |
| static inline int max77779_read_usb_temp(struct device *dev, int *temp) |
| { |
| return -ENODEV; |
| } |
| static inline int max77779_read_batt_id(struct device *dev, unsigned int *id) |
| { |
| return -ENODEV; |
| } |
| |
| /* ---------------------------------------------------------------------------- |
| * GS101 usecases |
| * Platform specific, will need to be moved outside the driver. |
| * |
| * Case USB_chg USB_otg WLC_chg WLC_TX PMIC_Charger Ext_B LSx Name |
| * ---------------------------------------------------------------------------- |
| * 1-1 1 0 x 0 IF-PMIC-VBUS 0 0/0 USB_CHG |
| * 1-2 2 0 x 0 DC VBUS 0 0/0 USB_DC |
| * 2-1 1 0 0 1 IF-PMIC-VBUS 2 0/1 USB_CHG_WLC_TX |
| * 2-2 2 0 0 1 DC CHG 2 0/1 USB_DC_WLC_TX |
| * 3-1 0 0 1 0 IF-PMIC-WCIN 0 0/0 WLC_RX |
| * 3-2 0 0 2 0 DC WCIN 0 0/0 WLC_DC |
| * 4-1 0 1 1 0 IF-PMIC-WCIN 1 1/0 USB_OTG_WLC_RX |
| * 4-2 0 1 2 0 DC WCIN 1 1/0 USB_OTG_WLC_DC |
| * 5-1 0 1 0 0 0 1 1/0 USB_OTG |
| * 5-2 0 1 0 0 OTG 5V 0 0/0 USB_OTG_FRS |
| * 6-2 0 0 0 1 0 2 0/1 WLC_TX |
| * 7-2 0 1 0 1 MW OTG 5V 2 0/1 USB_OTG_WLC_TX |
| * 8 0 0 0 0 0 0 0/0 IDLE |
| * ---------------------------------------------------------------------------- |
| * |
| * Ext_Boost = 0 off, 1 = OTG 5V, 2 = WTX 7.5 |
| * USB_chg = 0 off, 1 = on, 2 = PPS |
| * WLC_chg = 0 off, 1 = on, 2 = PPS |
| */ |
| struct max77779_foreach_cb_data { |
| struct gvotable_election *el; |
| |
| const char *reason; |
| |
| int chgr_on; /* CC_MAX != 0 */ |
| bool stby_on; /* on disconnect, mode=0 */ |
| bool charge_done; |
| |
| int chgin_off; /* input_suspend, mode=0 */ |
| int wlcin_off; /* input_suspend, mode=0 */ |
| int usb_wlc; /* input_suspend, mode=0 */ |
| |
| /* wlc_on is the same as wlc_rx */ |
| bool buck_on; /* wired power in (chgin_on) from TCPCI */ |
| |
| bool otg_on; /* power out, usually external */ |
| bool frs_on; /* power out, internal boost */ |
| |
| bool wlc_rx; /* charging wireless */ |
| bool wlc_tx; /* battery share */ |
| |
| bool dc_on; /* DC requested - wired or wireless */ |
| |
| u8 raw_value; /* hard override */ |
| bool use_raw; |
| |
| bool fwupdate_on; /* enter firmware update mode */ |
| |
| bool pogo_vin; /* power in, pogo */ |
| bool pogo_vout; /* power out, pogo */ |
| |
| u8 reg; |
| |
| struct gvotable_election *dc_avail_votable; /* DC_AVAIL */ |
| }; |
| |
| /* internal system values */ |
| enum { |
| /* Charging disabled (go to mode 0) */ |
| GBMS_CHGR_MODE_STBY_ON = 0x10 + MAX77779_CHGR_MODE_ALL_OFF, |
| /* USB inflow off */ |
| GBMS_CHGR_MODE_CHGIN_OFF = 0x11 + MAX77779_CHGR_MODE_ALL_OFF, |
| /* WCIN inflow off */ |
| GBMS_CHGR_MODE_WLCIN_OFF = 0x12 + MAX77779_CHGR_MODE_ALL_OFF, |
| /* USB + WLC_RX mode */ |
| GBMS_CHGR_MODE_USB_WLC_RX = 0x13 + MAX77779_CHGR_MODE_ALL_OFF, |
| |
| /* charging enabled (charging current != 0) */ |
| GBMS_CHGR_MODE_CHGR_BUCK_ON = 0x10 + MAX77779_CHGR_MODE_CHGR_BUCK_ON, |
| |
| /* boost mode (0x9) during firmware update */ |
| GBMS_CHGR_MODE_FWUPDATE_BOOST_ON = 0x20 + MAX77779_CHGR_MODE_BOOST_ON, |
| }; |
| |
| |
| #endif |
