drivers/input/mouse/elan_i2c.h

   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 #define ETP_CALIBRATE_MAX_LEN   3
  31
  32 /* IAP Firmware handling */
  33 #define ETP_PRODUCT_ID_FORMAT_STRING    "%d.0"
  34 #define ETP_FW_NAME             "elan_i2c_" ETP_PRODUCT_ID_FORMAT_STRING ".bin"
  35 #define ETP_IAP_START_ADDR      0x0083
  36 #define ETP_FW_IAP_PAGE_ERR     (1 << 5)
  37 #define ETP_FW_IAP_INTF_ERR     (1 << 4)
  38 #define ETP_FW_PAGE_SIZE        64
  39 #define ETP_FW_SIGNATURE_SIZE   6
  40
  41 struct i2c_client;
  42 struct completion;
  43
  44 enum tp_mode {
  45         IAP_MODE = 1,
  46         MAIN_MODE
  47 };
  48
  49 struct elan_transport_ops {
  50         int (*initialize)(struct i2c_client *client);
  51         int (*sleep_control)(struct i2c_client *, bool sleep);
  52         int (*power_control)(struct i2c_client *, bool enable);
  53         int (*set_mode)(struct i2c_client *client, u8 mode);
  54
  55         int (*calibrate)(struct i2c_client *client);
  56         int (*calibrate_result)(struct i2c_client *client, u8 *val);
  57
  58         int (*get_baseline_data)(struct i2c_client *client,
  59                                  bool max_baseliune, u8 *value);
  60
  61         int (*get_version)(struct i2c_client *client, bool iap, u8 *version);
  62         int (*get_sm_version)(struct i2c_client *client,
  63                               u16 *ic_type, u8 *version, u8 *clickpad);
  64         int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
  65         int (*get_product_id)(struct i2c_client *client, u16 *id);
  66
  67         int (*get_max)(struct i2c_client *client,
  68                        unsigned int *max_x, unsigned int *max_y);
  69         int (*get_resolution)(struct i2c_client *client,
  70                               u8 *hw_res_x, u8 *hw_res_y);
  71         int (*get_num_traces)(struct i2c_client *client,
  72                               unsigned int *x_tracenum,
  73                               unsigned int *y_tracenum);
  74
  75         int (*iap_get_mode)(struct i2c_client *client, enum tp_mode *mode);
  76         int (*iap_reset)(struct i2c_client *client);
  77
  78         int (*prepare_fw_update)(struct i2c_client *client);
  79         int (*write_fw_block)(struct i2c_client *client,
  80                               const u8 *page, u16 checksum, int idx);
  81         int (*finish_fw_update)(struct i2c_client *client,
  82                                 struct completion *reset_done);
  83
  84         int (*get_report)(struct i2c_client *client, u8 *report);
  85         int (*get_pressure_adjustment)(struct i2c_client *client,
  86                                        int *adjustment);
  87         int (*get_pattern)(struct i2c_client *client, u8 *pattern);
  88 };
  89
  90 extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops;
  91
  92 #endif /* _ELAN_I2C_H */