mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
df077237cf
New ICs are using a different scheme for the alternate bus parameter. Given that they are new and are only using either PS2 only or PS2 + SMBus Host Notify, we force those new ICs to use the SMBus solution for enhanced reporting. This allows the touchpad found on the Lenovo T480s to report 5 fingers every 8 ms, instead of having a limit of 2 every 8 ms. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: KT Liao <kt.liao@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
210 lines
4.9 KiB
C
210 lines
4.9 KiB
C
/*
|
|
* 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_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_res;
|
|
unsigned int y_res;
|
|
unsigned int bus;
|
|
bool paritycheck;
|
|
bool jumpy_cursor;
|
|
bool reports_pressure;
|
|
bool crc_enabled;
|
|
bool set_hw_resolution;
|
|
bool has_trackpoint;
|
|
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);
|
|
};
|
|
|
|
#ifdef CONFIG_MOUSE_PS2_ELANTECH
|
|
int elantech_detect(struct psmouse *psmouse, bool set_properties);
|
|
int elantech_init_ps2(struct psmouse *psmouse);
|
|
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;
|
|
}
|
|
static inline int elantech_init_ps2(struct psmouse *psmouse)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
#endif /* CONFIG_MOUSE_PS2_ELANTECH */
|
|
|
|
#if defined(CONFIG_MOUSE_PS2_ELANTECH_SMBUS)
|
|
int elantech_init_smbus(struct psmouse *psmouse);
|
|
#else
|
|
static inline int elantech_init_smbus(struct psmouse *psmouse)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
#endif /* CONFIG_MOUSE_PS2_ELANTECH_SMBUS */
|
|
|
|
#endif
|