Le 28 août 10 à 16:29, Henrik Rydberg a écrit :
The Microtouch controller is capable of doing finger tracking on
up to 60 fingers. To reduce bandwidth and cpu usage, convert the
driver to use the MT slots protocol.
As I understand it, this patch actually has three roles:
1. improving the evdev parameters of the device
2. cleaning the protocol to get rid of useless MISC/SCANCODE messages
3. convert the protocol to MT slots
+#define SN_MOVE 2048
+#define SN_WIDTH 128
In the long run, it might be useful to comment these signal/noise
constants
hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
+ input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
{
+ /* tell hid-input to skip setup of these event types */
if (usage->type == EV_KEY || usage->type == EV_ABS)
- clear_bit(usage->code, *bit);
-
- return 0;
+ set_bit(usage->type, hi->input->evbit);
+ return -1;
}
I understand this as a trick to get rid of MISC/SCANCODEs that are
added for every EV_KEY message, consequence of a rule in hid-input.c.
Wouldn't it be simpler to improve the rule than to work around it?
Cheers,
St.
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