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 52 struct ts_event { 53 u16 x; 54 u16 y; 55 u16 z1, z2; 56 }; 57 58 struct 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 84 int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd); 85 u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, struct ts_event *tc); 86 bool tsc2007_is_pen_down(struct tsc2007 *ts); 87 88 #if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007_IIO) 89 /* defined in tsc2007_iio.c */ 90 int tsc2007_iio_configure(struct tsc2007 *ts); 91 #else tsc2007_iio_configure(struct tsc2007 * ts)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 */ 99
