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