[people/ms/u-boot.git] / drivers / input / twl4030.c

/*
 * 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];
}
Commit	Line	Data
7d5ac918 PK	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	}
a4c8bbbc PK	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	}