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 
58 #define ETP_PRODUCT_ID_WHITEBOX	0x00B8
59 #define ETP_PRODUCT_ID_VOXEL	0x00BF
60 #define ETP_PRODUCT_ID_DELBIN	0x00C2
61 #define ETP_PRODUCT_ID_MAGPIE	0x0120
62 #define ETP_PRODUCT_ID_BOBBA	0x0121
63 
64 struct i2c_client;
65 struct completion;
66 
67 enum tp_mode {
68 	IAP_MODE = 1,
69 	MAIN_MODE
70 };
71 
72 struct elan_transport_ops {
73 	int (*initialize)(struct i2c_client *client);
74 	int (*sleep_control)(struct i2c_client *, bool sleep);
75 	int (*power_control)(struct i2c_client *, bool enable);
76 	int (*set_mode)(struct i2c_client *client, u8 mode);
77 
78 	int (*calibrate)(struct i2c_client *client);
79 	int (*calibrate_result)(struct i2c_client *client, u8 *val);
80 
81 	int (*get_baseline_data)(struct i2c_client *client,
82 				 bool max_baseline, u8 *value);
83 
84 	int (*get_version)(struct i2c_client *client, u8 pattern, bool iap,
85 			   u8 *version);
86 	int (*get_sm_version)(struct i2c_client *client, u8 pattern,
87 			      u16 *ic_type, u8 *version, u8 *clickpad);
88 	int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
89 	int (*get_product_id)(struct i2c_client *client, u16 *id);
90 
91 	int (*get_max)(struct i2c_client *client,
92 		       unsigned int *max_x, unsigned int *max_y);
93 	int (*get_resolution)(struct i2c_client *client,
94 			      u8 *hw_res_x, u8 *hw_res_y);
95 	int (*get_num_traces)(struct i2c_client *client,
96 			      unsigned int *x_tracenum,
97 			      unsigned int *y_tracenum);
98 
99 	int (*iap_get_mode)(struct i2c_client *client, enum tp_mode *mode);
100 	int (*iap_reset)(struct i2c_client *client);
101 
102 	int (*prepare_fw_update)(struct i2c_client *client, u16 ic_type,
103 				 u8 iap_version, u16 fw_page_size);
104 	int (*write_fw_block)(struct i2c_client *client, u16 fw_page_size,
105 			      const u8 *page, u16 checksum, int idx);
106 	int (*finish_fw_update)(struct i2c_client *client,
107 				struct completion *reset_done);
108 
109 	int (*get_report_features)(struct i2c_client *client, u8 pattern,
110 				   unsigned int *features,
111 				   unsigned int *report_len);
112 	int (*get_report)(struct i2c_client *client, u8 *report,
113 			  unsigned int report_len);
114 	int (*get_pressure_adjustment)(struct i2c_client *client,
115 				       int *adjustment);
116 	int (*get_pattern)(struct i2c_client *client, u8 *pattern);
117 };
118 
119 extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops;
120 
121 #endif /* _ELAN_I2C_H */
122