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