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