/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2022 Google, Inc
*
* MAXIM TCPC header file.
*/
#ifndef TCPCI_MAXIM_H_
#define TCPCI_MAXIM_H_
#define VENDOR_CC_STATUS2 0x85
#define CC1_VUFP_RD0P5 BIT(1)
#define CC2_VUFP_RD0P5 BIT(5)
#define TCPC_VENDOR_FLADC_STATUS 0x89
#define TCPC_VENDOR_CC_CTRL1 0x8c
#define CCCONNDRY BIT(7)
#define CCCOMPEN BIT(5)
#define TCPC_VENDOR_CC_CTRL2 0x8d
#define SBUOVPDIS BIT(7)
#define CCOVPDIS BIT(6)
#define SBURPCTRL BIT(5)
#define CCLPMODESEL GENMASK(4, 3)
#define ULTRA_LOW_POWER_MODE 1
#define CCRPCTRL GENMASK(2, 0)
#define UA_1_SRC 1
#define UA_80_SRC 3
#define TCPC_VENDOR_CC_CTRL3 0x8e
#define CCWTRDEB GENMASK(7, 6)
#define CCWTRDEB_1MS 1
#define CCWTRSEL GENMASK(5, 3)
#define CCWTRSEL_1V 0x4
#define CCLADDERDIS BIT(2)
#define WTRCYCLE GENMASK(0, 0)
#define WTRCYCLE_2_4_S 0
#define WTRCYCLE_4_8_S 1
#define TCPC_VENDOR_ADC_CTRL1 0x91
#define ADCINSEL GENMASK(7, 5)
#define ADCEN BIT(0)
enum contamiant_state {
NOT_DETECTED,
DETECTED,
SINK,
};
/*
* @potential_contaminant:
* Last returned result to tcpm indicating whether the TCPM port
* has potential contaminant.
*/
struct max_tcpci_chip {
struct tcpci_data data;
struct tcpci *tcpci;
struct device *dev;
struct i2c_client *client;
struct tcpm_port *port;
enum contamiant_state contaminant_state;
bool veto_vconn_swap;
};
static inline int max_tcpci_read16(struct max_tcpci_chip *chip, unsigned int reg, u16 *val)
{
return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u16));
}
static inline int max_tcpci_write16(struct max_tcpci_chip *chip, unsigned int reg, u16 val)
{
return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u16));
}
static inline int max_tcpci_read8(struct max_tcpci_chip *chip, unsigned int reg, u8 *val)
{
return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u8));
}
static inline int max_tcpci_write8(struct max_tcpci_chip *chip, unsigned int reg, u8 val)
{
return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u8));
}
/**
* max_contaminant_is_contaminant - Test if CC was toggled due to contaminant
*
* @chip: Handle to a struct max_tcpci_chip
* @disconnect_while_debounce: Whether the disconnect was detected when CC
* pins were debouncing
* @cc_handled: Returns whether or not update to CC status was handled here
*
* Determine if a contaminant was detected.
*
* Returns: true if a contaminant was detected, false otherwise. cc_handled
* is updated to reflect whether or not further CC handling is required.
*/
bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect_while_debounce,
bool *cc_handled);
#endif // TCPCI_MAXIM_H_
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