Hi Dmitry,

On 01/22/2015 09:02 PM, Dmitry Torokhov wrote:

On Thu, Jan 22, 2015 at 08:52:25PM +0100, Henrik Rydberg wrote:

quoted

 int input_mt_assign_slots(struct input_dev *dev, int *slots,
-			  const struct input_mt_pos *pos, int num_pos)
+			  const struct input_mt_pos *pos, int num_pos,
+			  int dmax)

Should dmax be unsigned and do we really need to treat 0 specially or we
could use UNIT_MAX as "don't care" value?

We could have dmax unsigned, but it does not have to be from a branching
perspective, since the square is what gets used anyways.

quoted

 {
 	struct input_mt *mt = dev->mt;
+	int mu = 2 * dmax * dmax;

For my education, what does "mu" stand for?

I chose mu because of the mathematical similarity to the chemical potential in
statistical mechanics, where it denotes the energy per particle. Here, it
denotes the energy per contact assignment.

Ideally, if someone could create a
write-up on the contact matching that would be most awesome.

Heh, I guess I will have to write something at some point, without requiring
prior knowledge of Lagrange relaxation or the like. Time is a luxury these days...

Henrik