1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright 2022 Google, Inc
4 *
5 * MAXIM TCPC header file.
6 */
7#ifndef TCPCI_MAXIM_H_
8#define TCPCI_MAXIM_H_
9
10#define VENDOR_CC_STATUS2 0x85
11#define CC1_VUFP_RD0P5 BIT(1)
12#define CC2_VUFP_RD0P5 BIT(5)
13#define TCPC_VENDOR_FLADC_STATUS 0x89
14
15#define TCPC_VENDOR_CC_CTRL1 0x8c
16#define CCCONNDRY BIT(7)
17#define CCCOMPEN BIT(5)
18
19#define TCPC_VENDOR_CC_CTRL2 0x8d
20#define SBUOVPDIS BIT(7)
21#define CCOVPDIS BIT(6)
22#define SBURPCTRL BIT(5)
23#define CCLPMODESEL_MASK GENMASK(4, 3)
24#define ULTRA_LOW_POWER_MODE BIT(3)
25#define CCRPCTRL_MASK GENMASK(2, 0)
26#define UA_1_SRC 1
27#define UA_80_SRC 3
28
29#define TCPC_VENDOR_CC_CTRL3 0x8e
30#define CCWTRDEB_MASK GENMASK(7, 6)
31#define CCWTRDEB_SHIFT 6
32#define CCWTRDEB_1MS 1
33#define CCWTRSEL_MASK GENMASK(5, 3)
34#define CCWTRSEL_SHIFT 3
35#define CCWTRSEL_1V 0x4
36#define CCLADDERDIS BIT(2)
37#define WTRCYCLE_MASK BIT(0)
38#define WTRCYCLE_SHIFT 0
39#define WTRCYCLE_2_4_S 0
40#define WTRCYCLE_4_8_S 1
41
42#define TCPC_VENDOR_ADC_CTRL1 0x91
43#define ADCINSEL_MASK GENMASK(7, 5)
44#define ADC_CHANNEL_OFFSET 5
45#define ADCEN BIT(0)
46
47enum contamiant_state {
48 NOT_DETECTED,
49 DETECTED,
50 SINK,
51};
52
53/*
54 * @potential_contaminant:
55 * Last returned result to tcpm indicating whether the TCPM port
56 * has potential contaminant.
57 */
58struct max_tcpci_chip {
59 struct tcpci_data data;
60 struct tcpci *tcpci;
61 struct device *dev;
62 struct i2c_client *client;
63 struct tcpm_port *port;
64 enum contamiant_state contaminant_state;
65 bool veto_vconn_swap;
66};
67
68static inline int max_tcpci_read16(struct max_tcpci_chip *chip, unsigned int reg, u16 *val)
69{
70 return regmap_raw_read(map: chip->data.regmap, reg, val, val_len: sizeof(u16));
71}
72
73static inline int max_tcpci_write16(struct max_tcpci_chip *chip, unsigned int reg, u16 val)
74{
75 return regmap_raw_write(map: chip->data.regmap, reg, val: &val, val_len: sizeof(u16));
76}
77
78static inline int max_tcpci_read8(struct max_tcpci_chip *chip, unsigned int reg, u8 *val)
79{
80 return regmap_raw_read(map: chip->data.regmap, reg, val, val_len: sizeof(u8));
81}
82
83static inline int max_tcpci_write8(struct max_tcpci_chip *chip, unsigned int reg, u8 val)
84{
85 return regmap_raw_write(map: chip->data.regmap, reg, val: &val, val_len: sizeof(u8));
86}
87
88bool max_contaminant_is_contaminant(struct max_tcpci_chip *chip, bool disconnect_while_debounce);
89
90#endif // TCPCI_MAXIM_H_
91

source code of linux/drivers/usb/typec/tcpm/tcpci_maxim.h