| /* | |
| * Elantech Touchpad driver (v5) | |
| * | |
| * Copyright (C) 2007-2008 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; | |
| unsigned char fw_version_maj; | |
| unsigned char fw_version_min; | |
| unsigned char hw_version; | |
| unsigned char paritycheck; | |
| unsigned char parity[256]; | |
| }; | |
| #ifdef CONFIG_MOUSE_PS2_ELANTECH | |
| int elantech_detect(struct psmouse *psmouse, int set_properties); | |
| int elantech_init(struct psmouse *psmouse); | |
| #else | |
| static inline int elantech_detect(struct psmouse *psmouse, int set_properties) | |
| { | |
| return -ENOSYS; | |
| } | |
| static inline int elantech_init(struct psmouse *psmouse) | |
| { | |
| return -ENOSYS; | |
| } | |
| #endif /* CONFIG_MOUSE_PS2_ELANTECH */ | |
| #endif |