/* * TWL4030 input * * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr> * * SPDX-License-Identifier: GPL-2.0+ */ #include <twl4030.h> int twl4030_input_power_button(void) { u8 data; twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data); if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_PWON) return 1; return 0; } int twl4030_input_charger(void) { u8 data; twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data); if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_CHG) return 1; return 0; } int twl4030_input_usb(void) { u8 data; twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_STS_HW_CONDITIONS, &data); if (data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_USB || data & TWL4030_PM_MASTER_STS_HW_CONDITIONS_VBUS) return 1; return 0; } int twl4030_keypad_scan(unsigned char *matrix) { u8 data; u8 c, r; twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD, TWL4030_KEYPAD_KEYP_CTRL_REG, &data); data |= TWL4030_KEYPAD_CTRL_SOFT_NRST | TWL4030_KEYPAD_CTRL_KBD_ON; data &= ~TWL4030_KEYPAD_CTRL_SOFTMODEN; twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, TWL4030_KEYPAD_KEYP_CTRL_REG, data); for (c = 0; c < 8; c++) { data = 0xff & ~(1 << c); twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, TWL4030_KEYPAD_KBC_REG, data); data = 0xff; twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD, TWL4030_KEYPAD_KBR_REG, &data); for (r = 0; r < 8; r++) matrix[c * 8 + r] = !(data & (1 << r)); } data = 0xff & ~(TWL4030_KEYPAD_CTRL_SOFT_NRST); twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, TWL4030_KEYPAD_KEYP_CTRL_REG, data); return 0; } int twl4030_keypad_key(unsigned char *matrix, u8 c, u8 r) { return matrix[c * 8 + r]; }