#ifndef _ALPS_H
#define _ALPS_H
-#define ALPS_PROTO_V1 0
-#define ALPS_PROTO_V2 1
-#define ALPS_PROTO_V3 2
-#define ALPS_PROTO_V4 3
+#define ALPS_PROTO_V1 1
+#define ALPS_PROTO_V2 2
+#define ALPS_PROTO_V3 3
+#define ALPS_PROTO_V4 4
+/**
+ * struct alps_model_info - touchpad ID table
+ * @signature: E7 response string to match.
+ * @command_mode_resp: For V3/V4 touchpads, the final byte of the EC response
+ * (aka command mode response) identifies the firmware minor version. This
+ * can be used to distinguish different hardware models which are not
+ * uniquely identifiable through their E7 responses.
+ * @proto_version: Indicates V1/V2/V3/...
+ * @byte0: Helps figure out whether a position report packet matches the
+ * known format for this model. The first byte of the report, ANDed with
+ * mask0, should match byte0.
+ * @mask0: The mask used to check the first byte of the report.
+ * @flags: Additional device capabilities (passthrough port, trackstick, etc.).
+ *
+ * Many (but not all) ALPS touchpads can be identified by looking at the
+ * values returned in the "E7 report" and/or the "EC report." This table
+ * lists a number of such touchpads.
+ */
struct alps_model_info {
- unsigned char signature[3];
- unsigned char command_mode_resp; /* v3/v4 only */
+ unsigned char signature[3];
+ unsigned char command_mode_resp;
unsigned char proto_version;
- unsigned char byte0, mask0;
- unsigned char flags;
+ unsigned char byte0, mask0;
+ unsigned char flags;
};
+/**
+ * struct alps_nibble_commands - encodings for register accesses
+ * @command: PS/2 command used for the nibble
+ * @data: Data supplied as an argument to the PS/2 command, if applicable
+ *
+ * The ALPS protocol uses magic sequences to transmit binary data to the
+ * touchpad, as it is generally not OK to send arbitrary bytes out the
+ * PS/2 port. Each of the sequences in this table sends one nibble of the
+ * register address or (write) data. Different versions of the ALPS protocol
+ * use slightly different encodings.
+ */
struct alps_nibble_commands {
int command;
unsigned char data;
};
+/**
+ * struct alps_fields - decoded version of the report packet
+ * @x_map: Bitmap of active X positions for MT.
+ * @y_map: Bitmap of active Y positions for MT.
+ * @fingers: Number of fingers for MT.
+ * @x: X position for ST.
+ * @y: Y position for ST.
+ * @z: Z position for ST.
+ * @first_mp: Packet is the first of a multi-packet report.
+ * @is_mp: Packet is part of a multi-packet report.
+ * @left: Left touchpad button is active.
+ * @right: Right touchpad button is active.
+ * @middle: Middle touchpad button is active.
+ * @ts_left: Left trackstick button is active.
+ * @ts_right: Right trackstick button is active.
+ * @ts_middle: Middle trackstick button is active.
+ */
+struct alps_fields {
+ unsigned int x_map;
+ unsigned int y_map;
+ unsigned int fingers;
+ unsigned int x;
+ unsigned int y;
+ unsigned int z;
+ unsigned int first_mp:1;
+ unsigned int is_mp:1;
+
+ unsigned int left:1;
+ unsigned int right:1;
+ unsigned int middle:1;
+
+ unsigned int ts_left:1;
+ unsigned int ts_right:1;
+ unsigned int ts_middle:1;
+};
+
+/**
+ * struct alps_data - private data structure for the ALPS driver
+ * @dev2: "Relative" device used to report trackstick or mouse activity.
+ * @phys: Physical path for the relative device.
+ * @nibble_commands: Command mapping used for touchpad register accesses.
+ * @addr_command: Command used to tell the touchpad that a register address
+ * follows.
+ * @proto_version: Indicates V1/V2/V3/...
+ * @byte0: Helps figure out whether a position report packet matches the
+ * known format for this model. The first byte of the report, ANDed with
+ * mask0, should match byte0.
+ * @mask0: The mask used to check the first byte of the report.
+ * @flags: Additional device capabilities (passthrough port, trackstick, etc.).
+ * @x_max: Largest possible X position value.
+ * @y_max: Largest possible Y position value.
+ * @x_bits: Number of X bits in the MT bitmap.
+ * @y_bits: Number of Y bits in the MT bitmap.
+ * @hw_init: Protocol-specific hardware init function.
+ * @process_packet: Protocol-specific function to process a report packet.
+ * @decode_fields: Protocol-specific function to read packet bitfields.
+ * @set_abs_params: Protocol-specific function to configure the input_dev.
+ * @prev_fin: Finger bit from previous packet.
+ * @multi_packet: Multi-packet data in progress.
+ * @multi_data: Saved multi-packet data.
+ * @x1: First X coordinate from last MT report.
+ * @x2: Second X coordinate from last MT report.
+ * @y1: First Y coordinate from last MT report.
+ * @y2: Second Y coordinate from last MT report.
+ * @fingers: Number of fingers from last MT report.
+ * @quirks: Bitmap of ALPS_QUIRK_*.
+ * @timer: Timer for flushing out the final report packet in the stream.
+ */
struct alps_data {
- struct input_dev *dev2; /* Relative device */
- char phys[32]; /* Phys */
- const struct alps_model_info *i;/* Info */
+ struct input_dev *dev2;
+ char phys[32];
+
+ /* these are autodetected when the device is identified */
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 */
- unsigned char multi_data[6]; /* Saved multi-packet data */
- int x1, x2, y1, y2; /* Coordinates from last MT report */
- int fingers; /* Number of fingers from MT report */
+ int addr_command;
+ unsigned char proto_version;
+ unsigned char byte0, mask0;
+ unsigned char flags;
+ int x_max;
+ int y_max;
+ int x_bits;
+ int y_bits;
+
+ int (*hw_init)(struct psmouse *psmouse);
+ void (*process_packet)(struct psmouse *psmouse);
+ void (*decode_fields)(struct alps_fields *f, unsigned char *p);
+ void (*set_abs_params)(struct alps_data *priv, struct input_dev *dev1);
+
+ int prev_fin;
+ int multi_packet;
+ unsigned char multi_data[6];
+ int x1, x2, y1, y2;
+ int fingers;
u8 quirks;
struct timer_list timer;
};
projects / cascardo / linux.git / blobdiff