Input: bcm5974 - Preparatory renames

Rename touch properties to match established nomenclature, and define
the maximum number of fingers.

Tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
index 39ac9ff..2de974c 100644 (file)
--- a/drivers/input/mouse/bcm5974.c
+++ b/drivers/input/mouse/bcm5974.c
@@ -183,18 +183,19 @@ struct tp_finger {
        __le16 abs_y;           /* absolute y coodinate */
        __le16 rel_x;           /* relative x coodinate */
        __le16 rel_y;           /* relative y coodinate */
-       __le16 size_major;      /* finger size, major axis? */
-       __le16 size_minor;      /* finger size, minor axis? */
+       __le16 tool_major;      /* tool area, major axis */
+       __le16 tool_minor;      /* tool area, minor axis */
        __le16 orientation;     /* 16384 when point, else 15 bit angle */
-       __le16 force_major;     /* trackpad force, major axis? */
-       __le16 force_minor;     /* trackpad force, minor axis? */
+       __le16 touch_major;     /* touch area, major axis */
+       __le16 touch_minor;     /* touch area, minor axis */
        __le16 unused[3];       /* zeros */
        __le16 multi;           /* one finger: varies, more fingers: constant */
 } __attribute__((packed,aligned(2)));
 
 /* trackpad finger data size, empirically at least ten fingers */
+#define MAX_FINGERS            16
 #define SIZEOF_FINGER          sizeof(struct tp_finger)
-#define SIZEOF_ALL_FINGERS     (16 * SIZEOF_FINGER)
+#define SIZEOF_ALL_FINGERS     (MAX_FINGERS * SIZEOF_FINGER)
 #define MAX_FINGER_ORIENTATION 16384
 
 /* device-specific parameters */
@@ -482,13 +483,13 @@ static void report_finger_data(struct input_dev *input,
                               const struct tp_finger *f)
 {
        input_report_abs(input, ABS_MT_TOUCH_MAJOR,
-                        raw2int(f->force_major) << 1);
+                        raw2int(f->touch_major) << 1);
        input_report_abs(input, ABS_MT_TOUCH_MINOR,
-                        raw2int(f->force_minor) << 1);
+                        raw2int(f->touch_minor) << 1);
        input_report_abs(input, ABS_MT_WIDTH_MAJOR,
-                        raw2int(f->size_major) << 1);
+                        raw2int(f->tool_major) << 1);
        input_report_abs(input, ABS_MT_WIDTH_MINOR,
-                        raw2int(f->size_minor) << 1);
+                        raw2int(f->tool_minor) << 1);
        input_report_abs(input, ABS_MT_ORIENTATION,
                         MAX_FINGER_ORIENTATION - raw2int(f->orientation));
        input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x));
@@ -521,8 +522,8 @@ static int report_tp_state(struct bcm5974 *dev, int size)
                for (i = 0; i < raw_n; i++)
                        report_finger_data(input, c, &f[i]);
 
-               raw_p = raw2int(f->force_major);
-               raw_w = raw2int(f->size_major);
+               raw_p = raw2int(f->touch_major);
+               raw_w = raw2int(f->tool_major);
                raw_x = raw2int(f->abs_x);
                raw_y = raw2int(f->abs_y);
 
@@ -542,7 +543,7 @@ static int report_tp_state(struct bcm5974 *dev, int size)
                        abs_y = int2bound(&c->y, c->y.devmax - raw_y);
                        while (raw_n--) {
                                ptest = int2bound(&c->p,
-                                                 raw2int(f->force_major));
+                                                 raw2int(f->touch_major));
                                if (ptest > PRESSURE_LOW)
                                        nmax++;
                                if (ptest > PRESSURE_HIGH)