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/*
* 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];
}
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