/*
 * drivers/input/sensor/sunxi_tpadc.h
 *
 * Copyright (C) 2017 Allwinner.
 * fuzhaoke <yangshounan@allwinnertech.com>
 *
 * SUNXI tPADC Controller Driver Header
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 */

#ifndef SUNXI_GPADC_H
#define SUNXI_GPADC_H

#define TPADC_DEV_NAME		("sunxi-tpadc")
#define CLK_IN			(12000000)
/* TPADC register offset */
#define TP_CTRL0_REG		0x00
#define TP_CTRL1_REG		0x04
#define TP_CTRL2_REG		0x08
#define TP_CTRL3_REG		0x0c
#define TP_INT_FIFOC_REG	0x10
#define	TP_INT_FIFOS_REG	0x14
#define TP_TPR_REG		0x18
#define TP_CDAT_REG		0x1c
#define TP_TEMP_DATA_REG	0x20
#define TP_DATA_REG		0x24
#define TP_IO_CONFIG_REG	0x28
#define TP_PORT_DATA_REG	0x2c

#define ADC_CLK_DIVIDER		20
#define FS_DIVIDER		16
#define TP_CLOCK		(1<<22)
#define ADC_ENABLE		(1<<4)
#define TP_DATA_IRQ_EN		(1<<16)
#define SUNXI_FIFO_DATA		(1<<16)
#define RTP_MODE_ENABLE		(1<<5)
#define RTP_FILTER_ENABLE	(1<<2)
#define RTP_FILTER_TYPE	(0x2<<0)

#define HOSC			1
#define TP_IO_INPUT_MODE	0xfffff

#define TP_CH3_SELECT		(1 << 3) /* channale 3 select enable,  0:disable, 1:enable */
#define TP_CH2_SELECT		(1 << 2) /* channale 2 select enable,  0:disable, 1:enable */
#define TP_CH1_SELECT		(1 << 1) /* channale 1 select enable,  0:disable, 1:enable */
#define TP_CH0_SELECT		(1 << 0) /* channale 0 select enable,  0:disable, 1:enable */

enum tp_channel_id {
	TP_CH_0 = 0,
	TP_CH_1,
	TP_CH_2,
	TP_CH_3,
};

struct sunxi_tpadc {
	struct platform_device	*pdev;
	struct input_dev *input_channel0;
	struct input_dev *input_channel2;
	struct clk *mclk;
	struct clk *pclk;
	void __iomem *reg_base;
	int irq_num;
	struct timer_list timer;
};

#endif