rmi_2d_sensor.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (c) 2011-2016 Synaptics Incorporated
 4 * Copyright (c) 2011 Unixphere
 5 */
 6
 7#ifndef _RMI_2D_SENSOR_H
 8#define _RMI_2D_SENSOR_H
 9
10#include <linux/rmi.h>
11#include <linux/types.h>
12
13enum rmi_2d_sensor_object_type {
14	RMI_2D_OBJECT_NONE,
15	RMI_2D_OBJECT_FINGER,
16	RMI_2D_OBJECT_STYLUS,
17	RMI_2D_OBJECT_PALM,
18	RMI_2D_OBJECT_UNCLASSIFIED,
19};
20
21struct rmi_2d_sensor_abs_object {
22	enum rmi_2d_sensor_object_type type;
23	int mt_tool;
24	u16 x;
25	u16 y;
26	u8 z;
27	u8 wx;
28	u8 wy;
29};
30
31/**
32 * @axis_align - controls parameters that are useful in system prototyping
33 * and bring up.
34 * @max_x - The maximum X coordinate that will be reported by this sensor.
35 * @max_y - The maximum Y coordinate that will be reported by this sensor.
36 * @nbr_fingers - How many fingers can this sensor report?
37 * @data_pkt - buffer for data reported by this sensor.
38 * @pkt_size - number of bytes in that buffer.
39 * @attn_size - Size of the HID attention report (only contains abs data).
40 * position when two fingers are on the device.  When this is true, we
41 * assume we have one of those sensors and report events appropriately.
42 * @sensor_type - indicates whether we're touchscreen or touchpad.
43 * @input - input device for absolute pointing stream
44 * @input_phys - buffer for the absolute phys name for this sensor.
45 */
46struct rmi_2d_sensor {
47	struct rmi_2d_axis_alignment axis_align;
48	struct input_mt_pos *tracking_pos;
49	int *tracking_slots;
50	bool kernel_tracking;
51	struct rmi_2d_sensor_abs_object *objs;
52	int dmax;
53	u16 min_x;
54	u16 max_x;
55	u16 min_y;
56	u16 max_y;
57	u8 nbr_fingers;
58	u8 *data_pkt;
59	int pkt_size;
60	int attn_size;
61	bool topbuttonpad;
62	enum rmi_sensor_type sensor_type;
63	struct input_dev *input;
64	struct rmi_function *fn;
65	char input_phys[32];
66	u8 report_abs;
67	u8 report_rel;
68	u8 x_mm;
69	u8 y_mm;
70	enum rmi_reg_state dribble;
71	enum rmi_reg_state palm_detect;
72};
73
74int rmi_2d_sensor_of_probe(struct device *dev,
75				struct rmi_2d_sensor_platform_data *pdata);
76
77void rmi_2d_sensor_abs_process(struct rmi_2d_sensor *sensor,
78				struct rmi_2d_sensor_abs_object *obj,
79				int slot);
80
81void rmi_2d_sensor_abs_report(struct rmi_2d_sensor *sensor,
82				struct rmi_2d_sensor_abs_object *obj,
83				int slot);
84
85void rmi_2d_sensor_rel_report(struct rmi_2d_sensor *sensor, int x, int y);
86
87int rmi_2d_sensor_configure_input(struct rmi_function *fn,
88					struct rmi_2d_sensor *sensor);
89#endif /* _RMI_2D_SENSOR_H */