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>

1 files changed, 69 insertions, 0 deletions

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;
+}