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Input: ALPS - add support for protocol versions 3 and 4

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This patch adds support for two ALPS touchpad protocols not
supported currently by the driver, which I am arbitrarily naming
version 3 and version 4. Support is single-touch only at this time,
although both protocols are capable of limited multitouch support.

Thanks to Andrew Skalski, who did the initial reverse-engineering
of the v3 protocol.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Seth Forshee
2011-11-07 19:53:36 -08:00
committed by Dmitry Torokhov
parent b46615fe92
commit 25bded7cd6
3 changed files with 768 additions and 38 deletions
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14
drivers/input/mouse/alps.h
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@@ -14,22 +14,36 @@
#define ALPS_PROTO_V1 0
#define ALPS_PROTO_V2 1
#define ALPS_PROTO_V3 2
#define ALPS_PROTO_V4 3
struct alps_model_info {
unsigned char signature[3];
unsigned char command_mode_resp; /* v3/v4 only */
unsigned char proto_version;
unsigned char byte0, mask0;
unsigned char flags;
};
struct alps_nibble_commands {
int command;
unsigned char data;
};
struct alps_data {
struct input_dev *dev2; /* Relative device */
char phys[32]; /* Phys */
const struct alps_model_info *i;/* Info */
const struct alps_nibble_commands *nibble_commands;
int addr_command; /* Command to set register address */
int prev_fin; /* Finger bit from previous packet */
int multi_packet; /* Multi-packet data in progress */
u8 quirks;
struct timer_list timer;
};
#define ALPS_QUIRK_TRACKSTICK_BUTTONS 1 /* trakcstick buttons in trackstick packet */
#ifdef CONFIG_MOUSE_PS2_ALPS
int alps_detect(struct psmouse *psmouse, bool set_properties);
int alps_init(struct psmouse *psmouse);