4 * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr>
6 * SPDX-License-Identifier: GPL-2.0+
11 int twl4030_input_power_button(void)
15 twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
16 TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
18 if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON)
24 int twl4030_input_charger(void)
28 twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
29 TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
31 if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG)
37 int twl4030_input_usb(void)
41 twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
42 TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data);
44 if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB ||
45 data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS)
51 int twl4030_keypad_scan(unsigned char *matrix)
56 twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
57 TWL4030_KEYPAD_KEYP_CTRL_REG, &data);
59 data |= TWL4030_KEYPAD_CTRL_SOFT_NRST | TWL4030_KEYPAD_CTRL_KBD_ON;
60 data &= ~TWL4030_KEYPAD_CTRL_SOFTMODEN;
62 twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
63 TWL4030_KEYPAD_KEYP_CTRL_REG, data);
65 for (c = 0; c < 8; c++) {
66 data = 0xff & ~(1 << c);
67 twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
68 TWL4030_KEYPAD_KBC_REG, data);
71 twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD,
72 TWL4030_KEYPAD_KBR_REG, &data);
74 for (r = 0; r < 8; r++)
75 matrix[c * 8 + r] = !(data & (1 << r));
78 data = 0xff & ~(TWL4030_KEYPAD_CTRL_SOFT_NRST);
79 twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
80 TWL4030_KEYPAD_KEYP_CTRL_REG, data);
85 int twl4030_keypad_key(unsigned char *matrix, u8 c, u8 r)
87 return matrix[c * 8 + r];