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 struct 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 54 struct ts_event { 55 u16 x; 56 u16 y; 57 u16 z1, z2; 58 }; 59 60 struct 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 86 int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd); 87 u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, struct ts_event *tc); 88 bool tsc2007_is_pen_down(struct tsc2007 *ts); 89 90 #if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007_IIO) 91 /* defined in tsc2007_iio.c */ 92 int tsc2007_iio_configure(struct tsc2007 *ts); 93 #else tsc2007_iio_configure(struct tsc2007 * ts)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 */ 101