/* SPDX-License-Identifier: GPL-2.0-only */ /* * Elantech Touchpad driver (v6) * * Copyright (C) 2007-2009 Arjan Opmeer <[email protected]> * * 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 … #define ETP_FW_VERSION_QUERY … #define ETP_CAPABILITIES_QUERY … #define ETP_SAMPLE_QUERY … #define ETP_RESOLUTION_QUERY … #define ETP_ICBODY_QUERY … /* * Command values for register reading or writing */ #define ETP_REGISTER_READ … #define ETP_REGISTER_WRITE … #define ETP_REGISTER_READWRITE … /* * Hardware version 2 custom PS/2 command value */ #define ETP_PS2_CUSTOM_COMMAND … /* * Times to retry a ps2_command and millisecond delay between tries */ #define ETP_PS2_COMMAND_TRIES … #define ETP_PS2_COMMAND_DELAY … /* * Times to try to read back a register and millisecond delay between tries */ #define ETP_READ_BACK_TRIES … #define ETP_READ_BACK_DELAY … /* * Register bitmasks for hardware version 1 */ #define ETP_R10_ABSOLUTE_MODE … #define ETP_R11_4_BYTE_MODE … /* * Capability bitmasks */ #define ETP_CAP_HAS_ROCKER … /* * 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 … #define ETP_XMIN_V1 … #define ETP_XMAX_V1 … #define ETP_YMIN_V1 … #define ETP_YMAX_V1 … /* * The resolution for older v2 hardware doubled. * (newer v2's firmware provides command so we can query) */ #define ETP_XMIN_V2 … #define ETP_XMAX_V2 … #define ETP_YMIN_V2 … #define ETP_YMAX_V2 … #define ETP_PMIN_V2 … #define ETP_PMAX_V2 … #define ETP_WMIN_V2 … #define ETP_WMAX_V2 … /* * v3 hardware has 2 kinds of packet types, * v4 hardware has 3. */ #define PACKET_UNKNOWN … #define PACKET_DEBOUNCE … #define PACKET_V3_HEAD … #define PACKET_V3_TAIL … #define PACKET_V4_HEAD … #define PACKET_V4_MOTION … #define PACKET_V4_STATUS … #define PACKET_TRACKPOINT … /* * track up to 5 fingers for v4 hardware */ #define ETP_MAX_FINGERS … /* * weight value for v4 hardware */ #define ETP_WEIGHT_VALUE … /* * Bus information on 3rd byte of query ETP_RESOLUTION_QUERY(0x04) */ #define ETP_BUS_PS2_ONLY … #define ETP_BUS_SMB_ALERT_ONLY … #define ETP_BUS_SMB_HST_NTFY_ONLY … #define ETP_BUS_PS2_SMB_ALERT … #define ETP_BUS_PS2_SMB_HST_NTFY … /* * 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) … /* * The base position for one finger, v4 hardware */ struct finger_pos { … }; struct elantech_device_info { … }; struct elantech_data { … }; 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
Codebase Browser
linux