cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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tsc2007.h (2488B)

      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
     22struct gpio_desc;
     23
     24#define TSC2007_MEASURE_TEMP0		(0x0 << 4)
     25#define TSC2007_MEASURE_AUX		(0x2 << 4)
     26#define TSC2007_MEASURE_TEMP1		(0x4 << 4)
     27#define TSC2007_ACTIVATE_XN		(0x8 << 4)
     28#define TSC2007_ACTIVATE_YN		(0x9 << 4)
     29#define TSC2007_ACTIVATE_YP_XN		(0xa << 4)
     30#define TSC2007_SETUP			(0xb << 4)
     31#define TSC2007_MEASURE_X		(0xc << 4)
     32#define TSC2007_MEASURE_Y		(0xd << 4)
     33#define TSC2007_MEASURE_Z1		(0xe << 4)
     34#define TSC2007_MEASURE_Z2		(0xf << 4)
     35
     36#define TSC2007_POWER_OFF_IRQ_EN	(0x0 << 2)
     37#define TSC2007_ADC_ON_IRQ_DIS0		(0x1 << 2)
     38#define TSC2007_ADC_OFF_IRQ_EN		(0x2 << 2)
     39#define TSC2007_ADC_ON_IRQ_DIS1		(0x3 << 2)
     40
     41#define TSC2007_12BIT			(0x0 << 1)
     42#define TSC2007_8BIT			(0x1 << 1)
     43
     44#define MAX_12BIT			((1 << 12) - 1)
     45
     46#define ADC_ON_12BIT	(TSC2007_12BIT | TSC2007_ADC_ON_IRQ_DIS0)
     47
     48#define READ_Y		(ADC_ON_12BIT | TSC2007_MEASURE_Y)
     49#define READ_Z1		(ADC_ON_12BIT | TSC2007_MEASURE_Z1)
     50#define READ_Z2		(ADC_ON_12BIT | TSC2007_MEASURE_Z2)
     51#define READ_X		(ADC_ON_12BIT | TSC2007_MEASURE_X)
     52#define PWRDOWN		(TSC2007_12BIT | TSC2007_POWER_OFF_IRQ_EN)
     53
     54struct ts_event {
     55	u16	x;
     56	u16	y;
     57	u16	z1, z2;
     58};
     59
     60struct tsc2007 {
     61	struct input_dev	*input;
     62	char			phys[32];
     63
     64	struct i2c_client	*client;
     65
     66	u16			model;
     67	u16			x_plate_ohms;
     68	u16			max_rt;
     69	unsigned long		poll_period; /* in jiffies */
     70	int			fuzzx;
     71	int			fuzzy;
     72	int			fuzzz;
     73
     74	struct gpio_desc	*gpiod;
     75	int			irq;
     76
     77	wait_queue_head_t	wait;
     78	bool			stopped;
     79
     80	int			(*get_pendown_state)(struct device *);
     81	void			(*clear_penirq)(void);
     82
     83	struct mutex		mlock;
     84};
     85
     86int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd);
     87u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, struct ts_event *tc);
     88bool tsc2007_is_pen_down(struct tsc2007 *ts);
     89
     90#if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007_IIO)
     91/* defined in tsc2007_iio.c */
     92int tsc2007_iio_configure(struct tsc2007 *ts);
     93#else
     94static inline int tsc2007_iio_configure(struct tsc2007 *ts)
     95{
     96	return 0;
     97}
     98#endif /* CONFIG_TOUCHSCREEN_TSC2007_IIO */
     99
    100#endif /* _TSC2007_H */