1/*
2 * Elan I2C/SMBus Touchpad driver
3 *
4 * Copyright (c) 2013 ELAN Microelectronics Corp.
5 *
6 * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
7 *
8 * Based on cyapa driver:
9 * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
10 * copyright (c) 2011-2012 Google, Inc.
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License version 2 as published
14 * by the Free Software Foundation.
15 *
16 * Trademarks are the property of their respective owners.
17 */
18
19#ifndef _ELAN_I2C_H
20#define _ELAN_I2C_H
21
22#include <linux/types.h>
23
24#define ETP_ENABLE_ABS		0x0001
25#define ETP_ENABLE_CALIBRATE	0x0002
26#define ETP_DISABLE_CALIBRATE	0x0000
27#define ETP_DISABLE_POWER	0x0001
28#define ETP_PRESSURE_OFFSET	25
29
30/* IAP Firmware handling */
31#define ETP_FW_NAME		"elan_i2c.bin"
32#define ETP_IAP_START_ADDR	0x0083
33#define ETP_FW_IAP_PAGE_ERR	(1 << 5)
34#define ETP_FW_IAP_INTF_ERR	(1 << 4)
35#define ETP_FW_PAGE_SIZE	64
36#define ETP_FW_VAILDPAGE_COUNT	768
37#define ETP_FW_SIGNATURE_SIZE	6
38#define ETP_FW_SIGNATURE_ADDRESS	0xBFFA
39
40struct i2c_client;
41struct completion;
42
43enum tp_mode {
44	IAP_MODE = 1,
45	MAIN_MODE
46};
47
48struct elan_transport_ops {
49	int (*initialize)(struct i2c_client *client);
50	int (*sleep_control)(struct i2c_client *, bool sleep);
51	int (*power_control)(struct i2c_client *, bool enable);
52	int (*set_mode)(struct i2c_client *client, u8 mode);
53
54	int (*calibrate)(struct i2c_client *client);
55	int (*calibrate_result)(struct i2c_client *client, u8 *val);
56
57	int (*get_baseline_data)(struct i2c_client *client,
58				 bool max_baseliune, u8 *value);
59
60	int (*get_version)(struct i2c_client *client, bool iap, u8 *version);
61	int (*get_sm_version)(struct i2c_client *client, u8 *version);
62	int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
63	int (*get_product_id)(struct i2c_client *client, u8 *id);
64
65	int (*get_max)(struct i2c_client *client,
66		       unsigned int *max_x, unsigned int *max_y);
67	int (*get_resolution)(struct i2c_client *client,
68			      u8 *hw_res_x, u8 *hw_res_y);
69	int (*get_num_traces)(struct i2c_client *client,
70			      unsigned int *x_tracenum,
71			      unsigned int *y_tracenum);
72
73	int (*iap_get_mode)(struct i2c_client *client, enum tp_mode *mode);
74	int (*iap_reset)(struct i2c_client *client);
75
76	int (*prepare_fw_update)(struct i2c_client *client);
77	int (*write_fw_block)(struct i2c_client *client,
78			      const u8 *page, u16 checksum, int idx);
79	int (*finish_fw_update)(struct i2c_client *client,
80				struct completion *reset_done);
81
82	int (*get_report)(struct i2c_client *client, u8 *report);
83	int (*get_pressure_adjustment)(struct i2c_client *client,
84				       int *adjustment);
85};
86
87extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops;
88
89#endif /* _ELAN_I2C_H */
90