| /* |
| * Elantech Touchpad driver (v6) |
| * |
| * Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published |
| * by the Free Software Foundation. |
| * |
| * Trademarks are the property of their respective owners. |
| */ |
| |
| #ifndef _ELANTECH_H |
| #define _ELANTECH_H |
| |
| /* |
| * Command values for Synaptics style queries |
| */ |
| #define ETP_FW_VERSION_QUERY 0x01 |
| #define ETP_CAPABILITIES_QUERY 0x02 |
| |
| /* |
| * Command values for register reading or writing |
| */ |
| #define ETP_REGISTER_READ 0x10 |
| #define ETP_REGISTER_WRITE 0x11 |
| |
| /* |
| * 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) |
| |
| /* |
| * It seems the resolution for hardware version 2 doubled. |
| * Hence the X and Y ranges are doubled too. |
| * The bezel around the pad also appears to be smaller |
| */ |
| #define ETP_EDGE_FUZZ_V2 8 |
| |
| #define ETP_XMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2) |
| #define ETP_XMAX_V2 (1152 - ETP_EDGE_FUZZ_V2) |
| #define ETP_YMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2) |
| #define ETP_YMAX_V2 ( 768 - ETP_EDGE_FUZZ_V2) |
| |
| /* |
| * For two finger touches the coordinate of each finger gets reported |
| * separately but with reduced resolution. |
| */ |
| #define ETP_2FT_FUZZ 4 |
| |
| #define ETP_2FT_XMIN ( 0 + ETP_2FT_FUZZ) |
| #define ETP_2FT_XMAX (288 - ETP_2FT_FUZZ) |
| #define ETP_2FT_YMIN ( 0 + ETP_2FT_FUZZ) |
| #define ETP_2FT_YMAX (192 - ETP_2FT_FUZZ) |
| |
| struct elantech_data { |
| 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 char debug; |
| unsigned char capabilities; |
| bool paritycheck; |
| bool jumpy_cursor; |
| unsigned char hw_version; |
| unsigned int fw_version; |
| unsigned int single_finger_reports; |
| unsigned char parity[256]; |
| }; |
| |
| #ifdef CONFIG_MOUSE_PS2_ELANTECH |
| int elantech_detect(struct psmouse *psmouse, bool set_properties); |
| int elantech_init(struct psmouse *psmouse); |
| #else |
| static inline int elantech_detect(struct psmouse *psmouse, bool set_properties) |
| { |
| return -ENOSYS; |
| } |
| static inline int elantech_init(struct psmouse *psmouse) |
| { |
| return -ENOSYS; |
| } |
| #endif /* CONFIG_MOUSE_PS2_ELANTECH */ |
| |
| #endif |
