101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2008 MtekVision Co., Ltd.
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* Kwangwoo Lee <kwlee@mtekvision.com>
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*
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* Using code from:
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* - ads7846.c
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* Copyright (c) 2005 David Brownell
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* Copyright (c) 2006 Nokia Corporation
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* - corgi_ts.c
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* Copyright (C) 2004-2005 Richard Purdie
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* - omap_ts.[hc], ads7846.h, ts_osk.c
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* Copyright (C) 2002 MontaVista Software
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* Copyright (C) 2004 Texas Instruments
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* Copyright (C) 2005 Dirk Behme
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*/
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#ifndef _TSC2007_H
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#define _TSC2007_H
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struct gpio_desc;
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#define TSC2007_MEASURE_TEMP0 (0x0 << 4)
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#define TSC2007_MEASURE_AUX (0x2 << 4)
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#define TSC2007_MEASURE_TEMP1 (0x4 << 4)
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#define TSC2007_ACTIVATE_XN (0x8 << 4)
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#define TSC2007_ACTIVATE_YN (0x9 << 4)
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#define TSC2007_ACTIVATE_YP_XN (0xa << 4)
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#define TSC2007_SETUP (0xb << 4)
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#define TSC2007_MEASURE_X (0xc << 4)
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#define TSC2007_MEASURE_Y (0xd << 4)
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#define TSC2007_MEASURE_Z1 (0xe << 4)
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#define TSC2007_MEASURE_Z2 (0xf << 4)
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#define TSC2007_POWER_OFF_IRQ_EN (0x0 << 2)
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#define TSC2007_ADC_ON_IRQ_DIS0 (0x1 << 2)
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#define TSC2007_ADC_OFF_IRQ_EN (0x2 << 2)
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#define TSC2007_ADC_ON_IRQ_DIS1 (0x3 << 2)
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#define TSC2007_12BIT (0x0 << 1)
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#define TSC2007_8BIT (0x1 << 1)
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#define MAX_12BIT ((1 << 12) - 1)
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#define ADC_ON_12BIT (TSC2007_12BIT | TSC2007_ADC_ON_IRQ_DIS0)
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#define READ_Y (ADC_ON_12BIT | TSC2007_MEASURE_Y)
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#define READ_Z1 (ADC_ON_12BIT | TSC2007_MEASURE_Z1)
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#define READ_Z2 (ADC_ON_12BIT | TSC2007_MEASURE_Z2)
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#define READ_X (ADC_ON_12BIT | TSC2007_MEASURE_X)
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#define PWRDOWN (TSC2007_12BIT | TSC2007_POWER_OFF_IRQ_EN)
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struct ts_event {
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u16 x;
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u16 y;
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u16 z1, z2;
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};
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struct tsc2007 {
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struct input_dev *input;
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char phys[32];
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struct i2c_client *client;
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u16 model;
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u16 x_plate_ohms;
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u16 max_rt;
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unsigned long poll_period; /* in jiffies */
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int fuzzx;
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int fuzzy;
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int fuzzz;
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struct gpio_desc *gpiod;
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int irq;
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wait_queue_head_t wait;
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bool stopped;
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int (*get_pendown_state)(struct device *);
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void (*clear_penirq)(void);
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struct mutex mlock;
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};
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int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd);
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u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, struct ts_event *tc);
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bool tsc2007_is_pen_down(struct tsc2007 *ts);
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#if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007_IIO)
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/* defined in tsc2007_iio.c */
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int tsc2007_iio_configure(struct tsc2007 *ts);
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#else
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static inline int tsc2007_iio_configure(struct tsc2007 *ts)
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{
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return 0;
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}
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#endif /* CONFIG_TOUCHSCREEN_TSC2007_IIO */
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#endif /* _TSC2007_H */
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