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f1443404 NS |
1 | |
2 | /* | |
3 | * Copyright (c) 2008 MtekVision Co., Ltd. | |
4 | * Kwangwoo Lee <kwlee@mtekvision.com> | |
5 | * | |
6 | * Using code from: | |
7 | * - ads7846.c | |
8 | * Copyright (c) 2005 David Brownell | |
9 | * Copyright (c) 2006 Nokia Corporation | |
10 | * - corgi_ts.c | |
11 | * Copyright (C) 2004-2005 Richard Purdie | |
12 | * - omap_ts.[hc], ads7846.h, ts_osk.c | |
13 | * Copyright (C) 2002 MontaVista Software | |
14 | * Copyright (C) 2004 Texas Instruments | |
15 | * Copyright (C) 2005 Dirk Behme | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License version 2 as | |
19 | * published by the Free Software Foundation. | |
20 | */ | |
21 | ||
22 | #ifndef _TSC2007_H | |
23 | #define _TSC2007_H | |
24 | ||
25 | #define TSC2007_MEASURE_TEMP0 (0x0 << 4) | |
26 | #define TSC2007_MEASURE_AUX (0x2 << 4) | |
27 | #define TSC2007_MEASURE_TEMP1 (0x4 << 4) | |
28 | #define TSC2007_ACTIVATE_XN (0x8 << 4) | |
29 | #define TSC2007_ACTIVATE_YN (0x9 << 4) | |
30 | #define TSC2007_ACTIVATE_YP_XN (0xa << 4) | |
31 | #define TSC2007_SETUP (0xb << 4) | |
32 | #define TSC2007_MEASURE_X (0xc << 4) | |
33 | #define TSC2007_MEASURE_Y (0xd << 4) | |
34 | #define TSC2007_MEASURE_Z1 (0xe << 4) | |
35 | #define TSC2007_MEASURE_Z2 (0xf << 4) | |
36 | ||
37 | #define TSC2007_POWER_OFF_IRQ_EN (0x0 << 2) | |
38 | #define TSC2007_ADC_ON_IRQ_DIS0 (0x1 << 2) | |
39 | #define TSC2007_ADC_OFF_IRQ_EN (0x2 << 2) | |
40 | #define TSC2007_ADC_ON_IRQ_DIS1 (0x3 << 2) | |
41 | ||
42 | #define TSC2007_12BIT (0x0 << 1) | |
43 | #define TSC2007_8BIT (0x1 << 1) | |
44 | ||
45 | #define MAX_12BIT ((1 << 12) - 1) | |
46 | ||
47 | #define ADC_ON_12BIT (TSC2007_12BIT | TSC2007_ADC_ON_IRQ_DIS0) | |
48 | ||
49 | #define READ_Y (ADC_ON_12BIT | TSC2007_MEASURE_Y) | |
50 | #define READ_Z1 (ADC_ON_12BIT | TSC2007_MEASURE_Z1) | |
51 | #define READ_Z2 (ADC_ON_12BIT | TSC2007_MEASURE_Z2) | |
52 | #define READ_X (ADC_ON_12BIT | TSC2007_MEASURE_X) | |
53 | #define PWRDOWN (TSC2007_12BIT | TSC2007_POWER_OFF_IRQ_EN) | |
54 | ||
55 | struct ts_event { | |
56 | u16 x; | |
57 | u16 y; | |
58 | u16 z1, z2; | |
59 | }; | |
60 | ||
61 | struct tsc2007 { | |
62 | struct input_dev *input; | |
63 | char phys[32]; | |
64 | ||
65 | struct i2c_client *client; | |
66 | ||
67 | u16 model; | |
68 | u16 x_plate_ohms; | |
69 | u16 max_rt; | |
70 | unsigned long poll_period; /* in jiffies */ | |
71 | int fuzzx; | |
72 | int fuzzy; | |
73 | int fuzzz; | |
74 | ||
75 | unsigned int gpio; | |
76 | int irq; | |
77 | ||
78 | wait_queue_head_t wait; | |
79 | bool stopped; | |
80 | ||
81 | int (*get_pendown_state)(struct device *); | |
82 | void (*clear_penirq)(void); | |
83 | ||
84 | struct mutex mlock; | |
85 | }; | |
86 | ||
87 | int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd); | |
deec586d | 88 | u32 tsc2007_calculate_resistance(struct tsc2007 *tsc, struct ts_event *tc); |
f1443404 NS |
89 | bool tsc2007_is_pen_down(struct tsc2007 *ts); |
90 | ||
91 | #if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007_IIO) | |
92 | /* defined in tsc2007_iio.c */ | |
93 | int tsc2007_iio_configure(struct tsc2007 *ts); | |
94 | #else | |
95 | static inline int tsc2007_iio_configure(struct tsc2007 *ts) | |
96 | { | |
97 | return 0; | |
98 | } | |
99 | #endif /* CONFIG_TOUCHSCREEN_TSC2007_IIO */ | |
100 | ||
101 | #endif /* _TSC2007_H */ |