1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * TWL4030 input 4 * 5 * Copyright (C) 2015 Paul Kocialkowski <contact (at) paulk.fr> 6 */ 7 8 #include <twl4030.h> 9 10 int 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 23 int 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 36 int 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 50 int 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 84 int twl4030_keypad_key(unsigned char *matrix, u8 c, u8 r) 85 { 86 return matrix[c * 8 + r]; 87 } 88
