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 /* IAP Firmware handling */ 30 #define ETP_PRODUCT_ID_FORMAT_STRING "%d.0" 31 #define ETP_FW_NAME "elan_i2c_" ETP_PRODUCT_ID_FORMAT_STRING ".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_SIGNATURE_SIZE 6 37 38 struct i2c_client; 39 struct completion; 40 41 enum tp_mode { 42 IAP_MODE = 1, 43 MAIN_MODE 44 }; 45 46 struct elan_transport_ops { 47 int (*initialize)(struct i2c_client *client); 48 int (*sleep_control)(struct i2c_client *, bool sleep); 49 int (*power_control)(struct i2c_client *, bool enable); 50 int (*set_mode)(struct i2c_client *client, u8 mode); 51 52 int (*calibrate)(struct i2c_client *client); 53 int (*calibrate_result)(struct i2c_client *client, u8 *val); 54 55 int (*get_baseline_data)(struct i2c_client *client, 56 bool max_baseliune, u8 *value); 57 58 int (*get_version)(struct i2c_client *client, bool iap, u8 *version); 59 int (*get_sm_version)(struct i2c_client *client, 60 u16 *ic_type, u8 *version, u8 *clickpad); 61 int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum); 62 int (*get_product_id)(struct i2c_client *client, u16 *id); 63 64 int (*get_max)(struct i2c_client *client, 65 unsigned int *max_x, unsigned int *max_y); 66 int (*get_resolution)(struct i2c_client *client, 67 u8 *hw_res_x, u8 *hw_res_y); 68 int (*get_num_traces)(struct i2c_client *client, 69 unsigned int *x_tracenum, 70 unsigned int *y_tracenum); 71 72 int (*iap_get_mode)(struct i2c_client *client, enum tp_mode *mode); 73 int (*iap_reset)(struct i2c_client *client); 74 75 int (*prepare_fw_update)(struct i2c_client *client); 76 int (*write_fw_block)(struct i2c_client *client, 77 const u8 *page, u16 checksum, int idx); 78 int (*finish_fw_update)(struct i2c_client *client, 79 struct completion *reset_done); 80 81 int (*get_report)(struct i2c_client *client, u8 *report); 82 int (*get_pressure_adjustment)(struct i2c_client *client, 83 int *adjustment); 84 int (*get_pattern)(struct i2c_client *client, u8 *pattern); 85 }; 86 87 extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops; 88 89 #endif /* _ELAN_I2C_H */ 90