input: Add debugging for key matrix key codes
These are read from the fdt - add a debug feature to display the mapping
on start-up.
See that we get debug output listing the keycodes
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/input/key_matrix.c b/drivers/input/key_matrix.c
index 287bf0d..946a186 100644
--- a/drivers/input/key_matrix.c
+++ b/drivers/input/key_matrix.c
@@ -145,6 +145,8 @@
key_code = tmp & 0xffff;
entry = row * config->num_cols + col;
map[entry] = key_code;
+ debug(" map %d, %d: pos=%d, keycode=%d\n", row, col,
+ entry, key_code);
if (pos && map_keycode == key_code)
*pos = entry;
}