Initial import

1 files changed, 162 insertions, 0 deletions

diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
new file mode 100644
index 000000000..f965d1569
--- /dev/null
+++ b/drivers/input/mouse/elantech.h
@@ -0,0 +1,162 @@
+/*
+ * 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
+
+/*
+ * The base position for one finger, v4 hardware
+ */
+struct finger_pos {
+	unsigned int x;
+	unsigned int y;
+};
+
+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 char debug;
+	unsigned char capabilities[3];
+	bool paritycheck;
+	bool jumpy_cursor;
+	bool reports_pressure;
+	bool crc_enabled;
+	bool set_hw_resolution;
+	unsigned char hw_version;
+	unsigned int fw_version;
+	unsigned int single_finger_reports;
+	unsigned int y_max;
+	unsigned int width;
+	struct finger_pos mt[ETP_MAX_FINGERS];
+	unsigned char parity[256];
+	int (*send_cmd)(struct psmouse *psmouse, unsigned char c, unsigned char *param);
+	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(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