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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Elan I2C/SMBus Touchpad driver
4 *
5 * Copyright (c) 2013 ELAN Microelectronics Corp.
6 *
7 * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
8 *
9 * Based on cyapa driver:
10 * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
11 * copyright (c) 2011-2012 Google, Inc.
12 *
13 * Trademarks are the property of their respective owners.
14 */
15
16#ifndef _ELAN_I2C_H
17#define _ELAN_I2C_H
18
19#include <linux/types.h>
20
21#define ETP_ENABLE_ABS 0x0001
22#define ETP_ENABLE_CALIBRATE 0x0002
23#define ETP_DISABLE_CALIBRATE 0x0000
24#define ETP_DISABLE_POWER 0x0001
25#define ETP_PRESSURE_OFFSET 25
26
27#define ETP_CALIBRATE_MAX_LEN 3
28
29#define ETP_FEATURE_REPORT_MK BIT(0)
30
31#define ETP_REPORT_ID 0x5D
32#define ETP_TP_REPORT_ID 0x5E
33#define ETP_TP_REPORT_ID2 0x5F
34#define ETP_REPORT_ID2 0x60 /* High precision report */
35
36#define ETP_REPORT_ID_OFFSET 2
37#define ETP_TOUCH_INFO_OFFSET 3
38#define ETP_FINGER_DATA_OFFSET 4
39#define ETP_HOVER_INFO_OFFSET 30
40#define ETP_MK_DATA_OFFSET 33 /* For high precision reports */
41
42#define ETP_MAX_REPORT_LEN 39
43
44#define ETP_MAX_FINGERS 5
45#define ETP_FINGER_DATA_LEN 5
46
47/* IAP Firmware handling */
48#define ETP_PRODUCT_ID_FORMAT_STRING "%d.0"
49#define ETP_FW_NAME "elan_i2c_" ETP_PRODUCT_ID_FORMAT_STRING ".bin"
50#define ETP_IAP_START_ADDR 0x0083
51#define ETP_FW_IAP_PAGE_ERR (1 << 5)
52#define ETP_FW_IAP_INTF_ERR (1 << 4)
53#define ETP_FW_PAGE_SIZE 64
54#define ETP_FW_PAGE_SIZE_128 128
55#define ETP_FW_PAGE_SIZE_512 512
56#define ETP_FW_SIGNATURE_SIZE 6
57
58struct i2c_client;
59struct completion;
60
61enum tp_mode {
62 IAP_MODE = 1,
63 MAIN_MODE
64};
65
66struct elan_transport_ops {
67 int (*initialize)(struct i2c_client *client);
68 int (*sleep_control)(struct i2c_client *, bool sleep);
69 int (*power_control)(struct i2c_client *, bool enable);
70 int (*set_mode)(struct i2c_client *client, u8 mode);
71
72 int (*calibrate)(struct i2c_client *client);
73 int (*calibrate_result)(struct i2c_client *client, u8 *val);
74
75 int (*get_baseline_data)(struct i2c_client *client,
76 bool max_baseliune, u8 *value);
77
78 int (*get_version)(struct i2c_client *client, u8 pattern, bool iap,
79 u8 *version);
80 int (*get_sm_version)(struct i2c_client *client, u8 pattern,
81 u16 *ic_type, u8 *version, u8 *clickpad);
82 int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
83 int (*get_product_id)(struct i2c_client *client, u16 *id);
84
85 int (*get_max)(struct i2c_client *client,
86 unsigned int *max_x, unsigned int *max_y);
87 int (*get_resolution)(struct i2c_client *client,
88 u8 *hw_res_x, u8 *hw_res_y);
89 int (*get_num_traces)(struct i2c_client *client,
90 unsigned int *x_tracenum,
91 unsigned int *y_tracenum);
92
93 int (*iap_get_mode)(struct i2c_client *client, enum tp_mode *mode);
94 int (*iap_reset)(struct i2c_client *client);
95
96 int (*prepare_fw_update)(struct i2c_client *client, u16 ic_type,
97 u8 iap_version, u16 fw_page_size);
98 int (*write_fw_block)(struct i2c_client *client, u16 fw_page_size,
99 const u8 *page, u16 checksum, int idx);
100 int (*finish_fw_update)(struct i2c_client *client,
101 struct completion *reset_done);
102
103 int (*get_report_features)(struct i2c_client *client, u8 pattern,
104 unsigned int *features,
105 unsigned int *report_len);
106 int (*get_report)(struct i2c_client *client, u8 *report,
107 unsigned int report_len);
108 int (*get_pressure_adjustment)(struct i2c_client *client,
109 int *adjustment);
110 int (*get_pattern)(struct i2c_client *client, u8 *pattern);
111};
112
113extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops;
114
115#endif /* _ELAN_I2C_H */