1/* SPDX-License-Identifier: GPL-2.0-only */
 2
 3/*
 4 * Copyright (c) 2008 MtekVision Co., Ltd.
 5 *	Kwangwoo Lee <kwlee@mtekvision.com>
 6 *
 7 * Using code from:
 8 *  - ads7846.c
 9 *	Copyright (c) 2005 David Brownell
10 *	Copyright (c) 2006 Nokia Corporation
11 *  - corgi_ts.c
12 *	Copyright (C) 2004-2005 Richard Purdie
13 *  - omap_ts.[hc], ads7846.h, ts_osk.c
14 *	Copyright (C) 2002 MontaVista Software
15 *	Copyright (C) 2004 Texas Instruments
16 *	Copyright (C) 2005 Dirk Behme
17 */
18
19#ifndef _TSC2007_H
20#define _TSC2007_H
21
22#define TSC2007_MEASURE_TEMP0		(0x0 << 4)
23#define TSC2007_MEASURE_AUX		(0x2 << 4)
24#define TSC2007_MEASURE_TEMP1		(0x4 << 4)
25#define TSC2007_ACTIVATE_XN		(0x8 << 4)
26#define TSC2007_ACTIVATE_YN		(0x9 << 4)
27#define TSC2007_ACTIVATE_YP_XN		(0xa << 4)
28#define TSC2007_SETUP			(0xb << 4)
29#define TSC2007_MEASURE_X		(0xc << 4)
30#define TSC2007_MEASURE_Y		(0xd << 4)
31#define TSC2007_MEASURE_Z1		(0xe << 4)
32#define TSC2007_MEASURE_Z2		(0xf << 4)
33
34#define TSC2007_POWER_OFF_IRQ_EN	(0x0 << 2)
35#define TSC2007_ADC_ON_IRQ_DIS0		(0x1 << 2)
36#define TSC2007_ADC_OFF_IRQ_EN		(0x2 << 2)
37#define TSC2007_ADC_ON_IRQ_DIS1		(0x3 << 2)
38
39#define TSC2007_12BIT			(0x0 << 1)
40#define TSC2007_8BIT			(0x1 << 1)
41
42#define MAX_12BIT			((1 << 12) - 1)
43
44#define ADC_ON_12BIT	(TSC2007_12BIT | TSC2007_ADC_ON_IRQ_DIS0)
45
46#define READ_Y		(ADC_ON_12BIT | TSC2007_MEASURE_Y)
47#define READ_Z1		(ADC_ON_12BIT | TSC2007_MEASURE_Z1)
48#define READ_Z2		(ADC_ON_12BIT | TSC2007_MEASURE_Z2)
49#define READ_X		(ADC_ON_12BIT | TSC2007_MEASURE_X)
50#define PWRDOWN		(TSC2007_12BIT | TSC2007_POWER_OFF_IRQ_EN)
51
52struct ts_event {
53	u16	x;
54	u16	y;
55	u16	z1, z2;
56};
57
58struct tsc2007 {
59	struct input_dev	*input;
60	char			phys[32];
61
62	struct i2c_client	*client;
63
64	u16			model;
65	u16			x_plate_ohms;
66	u16			max_rt;
67	unsigned long		poll_period; /* in jiffies */
68	int			fuzzx;
69	int			fuzzy;
70	int			fuzzz;
71
72	unsigned int		gpio;
73	int			irq;
74
75	wait_queue_head_t	wait;
76	bool			stopped;
77
78	int			(*get_pendown_state)(struct device *);
79	void			(*clear_penirq)(void);
80
81	struct mutex		mlock;
82};
83
84int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd);
85u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, struct ts_event *tc);
86bool tsc2007_is_pen_down(struct tsc2007 *ts);
87
88#if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007_IIO)
89/* defined in tsc2007_iio.c */
90int tsc2007_iio_configure(struct tsc2007 *ts);
91#else
92static inline int tsc2007_iio_configure(struct tsc2007 *ts)
93{
94	return 0;
95}
96#endif /* CONFIG_TOUCHSCREEN_TSC2007_IIO */
97
98#endif /* _TSC2007_H */