1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * TWL4030 input
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <twl4030.h>
10*4882a593Smuzhiyun
twl4030_input_power_button(void)11*4882a593Smuzhiyun int twl4030_input_power_button(void)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun u8 data;
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
16*4882a593Smuzhiyun TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON)
19*4882a593Smuzhiyun return 1;
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun return 0;
22*4882a593Smuzhiyun }
23*4882a593Smuzhiyun
twl4030_input_charger(void)24*4882a593Smuzhiyun int twl4030_input_charger(void)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun u8 data;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
29*4882a593Smuzhiyun TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG)
32*4882a593Smuzhiyun return 1;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun return 0;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
twl4030_input_usb(void)37*4882a593Smuzhiyun int twl4030_input_usb(void)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun u8 data;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
42*4882a593Smuzhiyun TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB ||
45*4882a593Smuzhiyun data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS)
46*4882a593Smuzhiyun return 1;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun return 0;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
twl4030_keypad_scan(unsigned char * matrix)51*4882a593Smuzhiyun int twl4030_keypad_scan(unsigned char *matrix)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun u8 data;
54*4882a593Smuzhiyun u8 c, r;
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
57*4882a593Smuzhiyun TWL4030_KEYPAD_KEYP_CTRL_REG, &data);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun data |= TWL4030_KEYPAD_CTRL_SOFT_NRST | TWL4030_KEYPAD_CTRL_KBD_ON;
60*4882a593Smuzhiyun data &= ~TWL4030_KEYPAD_CTRL_SOFTMODEN;
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
63*4882a593Smuzhiyun TWL4030_KEYPAD_KEYP_CTRL_REG, data);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun for (c = 0; c < 8; c++) {
66*4882a593Smuzhiyun data = 0xff & ~(1 << c);
67*4882a593Smuzhiyun twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
68*4882a593Smuzhiyun TWL4030_KEYPAD_KBC_REG, data);
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun data = 0xff;
71*4882a593Smuzhiyun twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
72*4882a593Smuzhiyun TWL4030_KEYPAD_KBR_REG, &data);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun for (r = 0; r < 8; r++)
75*4882a593Smuzhiyun matrix[c * 8 + r] = !(data & (1 << r));
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun data = 0xff & ~(TWL4030_KEYPAD_CTRL_SOFT_NRST);
79*4882a593Smuzhiyun twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
80*4882a593Smuzhiyun TWL4030_KEYPAD_KEYP_CTRL_REG, data);
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun return 0;
83*4882a593Smuzhiyun }
84*4882a593Smuzhiyun
twl4030_keypad_key(unsigned char * matrix,u8 c,u8 r)85*4882a593Smuzhiyun int twl4030_keypad_key(unsigned char *matrix, u8 c, u8 r)
86*4882a593Smuzhiyun {
87*4882a593Smuzhiyun return matrix[c * 8 + r];
88*4882a593Smuzhiyun }
89