| /* SPDX-License-Identifier: GPL-2.0-only */ | |
| /* | |
| * Elantech Touchpad driver (v6) | |
| * | |
| * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net> | |
| * | |
| * Trademarks are the property of their respective owners. | |
| */ | |
| #ifndef _ELANTECH_H | |
| #define _ELANTECH_H | |
| /* | |
| * Command values for Synaptics style queries | |
| */ | |
| #define ETP_FW_ID_QUERY 0x00 | |
| #define ETP_FW_VERSION_QUERY 0x01 | |
| #define ETP_CAPABILITIES_QUERY 0x02 | |
| #define ETP_SAMPLE_QUERY 0x03 | |
| #define ETP_RESOLUTION_QUERY 0x04 | |
| /* | |
| * Command values for register reading or writing | |
| */ | |
| #define ETP_REGISTER_READ 0x10 | |
| #define ETP_REGISTER_WRITE 0x11 | |
| #define ETP_REGISTER_READWRITE 0x00 | |
| /* | |
| * Hardware version 2 custom PS/2 command value | |
| */ | |
| #define ETP_PS2_CUSTOM_COMMAND 0xf8 | |
| /* | |
| * Times to retry a ps2_command and millisecond delay between tries | |
| */ | |
| #define ETP_PS2_COMMAND_TRIES 3 | |
| #define ETP_PS2_COMMAND_DELAY 500 | |
| /* | |
| * Times to try to read back a register and millisecond delay between tries | |
| */ | |
| #define ETP_READ_BACK_TRIES 5 | |
| #define ETP_READ_BACK_DELAY 2000 | |
| /* | |
| * Register bitmasks for hardware version 1 | |
| */ | |
| #define ETP_R10_ABSOLUTE_MODE 0x04 | |
| #define ETP_R11_4_BYTE_MODE 0x02 | |
| /* | |
| * Capability bitmasks | |
| */ | |
| #define ETP_CAP_HAS_ROCKER 0x04 | |
| /* | |
| * One hard to find application note states that X axis range is 0 to 576 | |
| * and Y axis range is 0 to 384 for harware version 1. | |
| * Edge fuzz might be necessary because of bezel around the touchpad | |
| */ | |
| #define ETP_EDGE_FUZZ_V1 32 | |
| #define ETP_XMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1) | |
| #define ETP_XMAX_V1 (576 - ETP_EDGE_FUZZ_V1) | |
| #define ETP_YMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1) | |
| #define ETP_YMAX_V1 (384 - ETP_EDGE_FUZZ_V1) | |
| /* | |
| * The resolution for older v2 hardware doubled. | |
| * (newer v2's firmware provides command so we can query) | |
| */ | |
| #define ETP_XMIN_V2 0 | |
| #define ETP_XMAX_V2 1152 | |
| #define ETP_YMIN_V2 0 | |
| #define ETP_YMAX_V2 768 | |
| #define ETP_PMIN_V2 0 | |
| #define ETP_PMAX_V2 255 | |
| #define ETP_WMIN_V2 0 | |
| #define ETP_WMAX_V2 15 | |
| /* | |
| * v3 hardware has 2 kinds of packet types, | |
| * v4 hardware has 3. | |
| */ | |
| #define PACKET_UNKNOWN 0x01 | |
| #define PACKET_DEBOUNCE 0x02 | |
| #define PACKET_V3_HEAD 0x03 | |
| #define PACKET_V3_TAIL 0x04 | |
| #define PACKET_V4_HEAD 0x05 | |
| #define PACKET_V4_MOTION 0x06 | |
| #define PACKET_V4_STATUS 0x07 | |
| #define PACKET_TRACKPOINT 0x08 | |
| /* | |
| * track up to 5 fingers for v4 hardware | |
| */ | |
| #define ETP_MAX_FINGERS 5 | |
| /* | |
| * weight value for v4 hardware | |
| */ | |
| #define ETP_WEIGHT_VALUE 5 | |
| /* | |
| * Bus information on 3rd byte of query ETP_RESOLUTION_QUERY(0x04) | |
| */ | |
| #define ETP_BUS_PS2_ONLY 0 | |
| #define ETP_BUS_SMB_ALERT_ONLY 1 | |
| #define ETP_BUS_SMB_HST_NTFY_ONLY 2 | |
| #define ETP_BUS_PS2_SMB_ALERT 3 | |
| #define ETP_BUS_PS2_SMB_HST_NTFY 4 | |
| /* | |
| * New ICs are either using SMBus Host Notify or just plain PS2. | |
| * | |
| * ETP_FW_VERSION_QUERY is: | |
| * Byte 1: | |
| * - bit 0..3: IC BODY | |
| * Byte 2: | |
| * - bit 4: HiddenButton | |
| * - bit 5: PS2_SMBUS_NOTIFY | |
| * - bit 6: PS2CRCCheck | |
| */ | |
| #define ETP_NEW_IC_SMBUS_HOST_NOTIFY(fw_version) \ | |
| ((((fw_version) & 0x0f2000) == 0x0f2000) && \ | |
| ((fw_version) & 0x0000ff) > 0) | |
| /* | |
| * The base position for one finger, v4 hardware | |
| */ | |
| struct finger_pos { | |
| unsigned int x; | |
| unsigned int y; | |
| }; | |
| struct elantech_device_info { | |
| unsigned char capabilities[3]; | |
| unsigned char samples[3]; | |
| unsigned char debug; | |
| unsigned char hw_version; | |
| unsigned int fw_version; | |
| unsigned int x_min; | |
| unsigned int y_min; | |
| unsigned int x_max; | |
| unsigned int y_max; | |
| unsigned int x_res; | |
| unsigned int y_res; | |
| unsigned int x_traces; | |
| unsigned int y_traces; | |
| unsigned int width; | |
| unsigned int bus; | |
| bool paritycheck; | |
| bool jumpy_cursor; | |
| bool reports_pressure; | |
| bool crc_enabled; | |
| bool set_hw_resolution; | |
| bool has_trackpoint; | |
| bool has_middle_button; | |
| int (*send_cmd)(struct psmouse *psmouse, unsigned char c, | |
| unsigned char *param); | |
| }; | |
| struct elantech_data { | |
| struct input_dev *tp_dev; /* Relative device for trackpoint */ | |
| char tp_phys[32]; | |
| unsigned char reg_07; | |
| unsigned char reg_10; | |
| unsigned char reg_11; | |
| unsigned char reg_20; | |
| unsigned char reg_21; | |
| unsigned char reg_22; | |
| unsigned char reg_23; | |
| unsigned char reg_24; | |
| unsigned char reg_25; | |
| unsigned char reg_26; | |
| unsigned int single_finger_reports; | |
| unsigned int y_max; | |
| unsigned int width; | |
| struct finger_pos mt[ETP_MAX_FINGERS]; | |
| unsigned char parity[256]; | |
| struct elantech_device_info info; | |
| void (*original_set_rate)(struct psmouse *psmouse, unsigned int rate); | |
| }; | |
| int elantech_detect(struct psmouse *psmouse, bool set_properties); | |
| int elantech_init_ps2(struct psmouse *psmouse); | |
| #ifdef CONFIG_MOUSE_PS2_ELANTECH | |
| int elantech_init(struct psmouse *psmouse); | |
| #else | |
| static inline int elantech_init(struct psmouse *psmouse) | |
| { | |
| return -ENOSYS; | |
| } | |
| #endif /* CONFIG_MOUSE_PS2_ELANTECH */ | |
| int elantech_init_smbus(struct psmouse *psmouse); | |
| #endif |