1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * TWL4030 input
4 *
5 * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
6 */
7
8#include <twl4030.h>
9
10int twl4030_input_power_button(void)
11{
12	u8 data;
13
14	twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
15			    TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
16
17	if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON)
18		return 1;
19
20	return 0;
21}
22
23int twl4030_input_charger(void)
24{
25	u8 data;
26
27	twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
28			    TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
29
30	if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG)
31		return 1;
32
33	return 0;
34}
35
36int twl4030_input_usb(void)
37{
38	u8 data;
39
40	twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
41			    TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
42
43	if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB ||
44	    data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS)
45		return 1;
46
47	return 0;
48}
49
50int twl4030_keypad_scan(unsigned char *matrix)
51{
52	u8 data;
53	u8 c, r;
54
55	twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
56			    TWL4030_KEYPAD_KEYP_CTRL_REG, &data);
57
58	data |= TWL4030_KEYPAD_CTRL_SOFT_NRST | TWL4030_KEYPAD_CTRL_KBD_ON;
59	data &= ~TWL4030_KEYPAD_CTRL_SOFTMODEN;
60
61	twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
62			     TWL4030_KEYPAD_KEYP_CTRL_REG, data);
63
64	for (c = 0; c < 8; c++) {
65		data = 0xff & ~(1 << c);
66		twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
67				     TWL4030_KEYPAD_KBC_REG, data);
68
69		data = 0xff;
70		twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
71				    TWL4030_KEYPAD_KBR_REG, &data);
72
73		for (r = 0; r < 8; r++)
74			matrix[c * 8 + r] = !(data & (1 << r));
75	}
76
77	data = 0xff & ~(TWL4030_KEYPAD_CTRL_SOFT_NRST);
78	twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
79			     TWL4030_KEYPAD_KEYP_CTRL_REG, data);
80
81	return 0;
82}
83
84int twl4030_keypad_key(unsigned char *matrix, u8 c, u8 r)
85{
86	return matrix[c * 8 + r];
87}
88