From 4583da1ad81b59b2a8cd2ae51c32b1bc8d32f1c4 Mon Sep 17 00:00:00 2001
From: Henrik Rydberg <rydberg@euromail.se>
Date: Tue, 15 Jun 2010 19:40:34 +0200
Subject: refactor: Generate code for ABS_MT mapping

Use the kernel-provided list MT_SLOT_ABS_EVENTS to generate
code mappings between ABS_MT space and MT space. This patch
adds the program mapgen that does the mapping, and adds two
include files generated with it.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
---
 Makefile         |  1 +
 include/abs2mt.h | 39 ++++++++++++++++++++++++++++++++
 include/mtbit.h  | 14 ++++++++++++
 mtdev/mapgen.c   | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 123 insertions(+)
 create mode 100644 include/abs2mt.h
 create mode 100644 include/mtbit.h
 create mode 100644 mtdev/mapgen.c

diff --git a/Makefile b/Makefile
index f364845..1ed5758 100644
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,7 @@ o_src	= hwstate mtstate memory mtouch gestures
 o_driver= multitouch
 
 TARGETS	+= match/test
+TARGETS	+= mtdev/mapgen
 TARGETS	+= src/test
 
 OBJECTS	= $(addsuffix .o,\
diff --git a/include/abs2mt.h b/include/abs2mt.h
new file mode 100644
index 0000000..6021d8d
--- /dev/null
+++ b/include/abs2mt.h
@@ -0,0 +1,39 @@
+/* generated by mapgen - do not edit */
+
+#ifndef ABS2MT_H
+#define ABS2MT_H
+
+#include "common.h"
+
+static const unsigned int map_abs2mt[ABS_CNT] = {
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008,
+ 0x0009, 0x000a, 0x000b, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+};
+
+static const unsigned int map_mt2abs[MT_ABS_SIZE] = {
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003a,
+};
+
+static inline int has_abs2mt(unsigned int code)
+{
+	return map_abs2mt[code];
+}
+
+static inline unsigned int abs2mt(unsigned int code)
+{
+	return map_abs2mt[code] - 1;
+}
+
+static inline unsigned int mt2abs(unsigned int mtcode)
+{
+	return map_mt2abs[mtcode];
+}
+
+#endif
diff --git a/include/mtbit.h b/include/mtbit.h
new file mode 100644
index 0000000..2c4dacb
--- /dev/null
+++ b/include/mtbit.h
@@ -0,0 +1,14 @@
+/* generated by mapgen - do not edit */
+
+#ifndef MTBIT_H
+#define MTBIT_H
+
+#define BIT_TRACKING_ID 9
+#define BIT_POSITION_X 5
+#define BIT_POSITION_Y 6
+#define BIT_TOUCH_MAJOR 0
+#define BIT_TOUCH_MINOR 1
+#define BIT_WIDTH_MAJOR 2
+#define BIT_WIDTH_MINOR 3
+
+#endif
diff --git a/mtdev/mapgen.c b/mtdev/mapgen.c
new file mode 100644
index 0000000..efb3524
--- /dev/null
+++ b/mtdev/mapgen.c
@@ -0,0 +1,69 @@
+/***************************************************************************
+ *
+ * Multitouch X driver
+ * Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ **************************************************************************/
+
+#include <common.h>
+#include <fcntl.h>
+#include <xbypass.h>
+
+#define BIT_DEF(name)				       \
+	printf("#define BIT_"#name" %d\n", \
+	       cabs2mt[ABS_MT_##name] - 1)
+
+static unsigned int cabs2mt[ABS_CNT];
+static unsigned int cmt2abs[MT_ABS_SIZE];
+
+void init_caps()
+{
+	static const int init_abs_map[MT_ABS_SIZE] = MT_SLOT_ABS_EVENTS;
+	int i;
+	for (i = 0; i < MT_ABS_SIZE; i++) {
+		cabs2mt[init_abs_map[i]] = i + 1;
+		cmt2abs[i] = init_abs_map[i];
+	}
+}
+
+static inline const char *newln(int i, int n)
+{
+	return i == n - 1 || i % 8 == 7 ? "\n" : "";
+}
+
+int main(int argc, char *argv[])
+{
+	int i;
+	init_caps();
+	printf("static const unsigned int map_abs2mt[ABS_CNT] = {\n");
+	for (i = 0; i < ABS_CNT; i++)
+		printf(" 0x%04x,%s", cabs2mt[i], newln(i, ABS_CNT));
+	printf("};\n\n");
+	printf("static const unsigned int map_mt2abs[MT_ABS_SIZE] = {\n");
+	for (i = 0; i < MT_ABS_SIZE; i++)
+		printf(" 0x%04x,%s", cmt2abs[i], newln(i, MT_ABS_SIZE));
+	printf("};\n\n");
+	BIT_DEF(TRACKING_ID);
+	BIT_DEF(POSITION_X);
+	BIT_DEF(POSITION_Y);
+	BIT_DEF(TOUCH_MAJOR);
+	BIT_DEF(TOUCH_MINOR);
+	BIT_DEF(WIDTH_MAJOR);
+	BIT_DEF(WIDTH_MINOR);
+	printf("\n");
+	return 0;
+}
-- 
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