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touchpad: Add code to get the touchpad model / manufacturer

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This is useful to know in some cases, it is e.g. necessary to figure out
which percentage of a touchpads range to use as edge for edge-scrolling.

Note this is a slightly cleaned up copy of the same code in
xf86-input-synaptics.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Hans de Goede 2014-11-24 12:16:05 +01:00 • committed by Peter Hutterer
parent 26080263e6
commit 8b6572bfae
2 changed files with 46 additions and 0 deletions
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36
src/evdev-mt-touchpad.c
View file

@ -1146,6 +1146,40 @@ tp_change_to_left_handed(struct evdev_device *device)
device->buttons.left_handed = device->buttons.want_left_handed;
}
struct model_lookup_t {
uint16_t vendor;
uint16_t product_start;
uint16_t product_end;
enum touchpad_model model;
};
static struct model_lookup_t model_lookup_table[] = {
{ 0x0002, 0x0007, 0x0007, MODEL_SYNAPTICS },
{ 0x0002, 0x0008, 0x0008, MODEL_ALPS },
{ 0x0002, 0x000e, 0x000e, MODEL_ELANTECH },
{ 0x05ac, 0, 0x0222, MODEL_APPLETOUCH },
{ 0x05ac, 0x0223, 0x0228, MODEL_UNIBODY_MACBOOK },
{ 0x05ac, 0x0229, 0x022b, MODEL_APPLETOUCH },
{ 0x05ac, 0x022c, 0xffff, MODEL_UNIBODY_MACBOOK },
{ 0, 0, 0, 0 }
};
static enum touchpad_model
tp_get_model(struct evdev_device *device)
{
struct model_lookup_t *lookup;
uint16_t vendor = libevdev_get_id_vendor(device->evdev);
uint16_t product = libevdev_get_id_product(device->evdev);
for (lookup = model_lookup_table; lookup->vendor; lookup++) {
if (lookup->vendor == vendor &&
lookup->product_start <= product &&
product <= lookup->product_end)
return lookup->model;
}
return MODEL_UNKNOWN;
}
struct evdev_dispatch *
evdev_mt_touchpad_create(struct evdev_device *device)
{
@ -1155,6 +1189,8 @@ evdev_mt_touchpad_create(struct evdev_device *device)
if (!tp)
return NULL;
tp->model = tp_get_model(device);
if (tp_init(tp, device) != 0) {
tp_destroy(&tp->base);
return NULL;

10
src/evdev-mt-touchpad.h
View file

@ -42,6 +42,15 @@ enum touchpad_event {
TOUCHPAD_EVENT_BUTTON_RELEASE = (1 << 2),
};
enum touchpad_model {
MODEL_UNKNOWN = 0,
MODEL_SYNAPTICS,
MODEL_ALPS,
MODEL_APPLETOUCH,
MODEL_ELANTECH,
MODEL_UNIBODY_MACBOOK
};
enum touch_state {
TOUCH_NONE = 0,
TOUCH_BEGIN,
@ -156,6 +165,7 @@ struct tp_dispatch {
unsigned int slot; /* current slot */
bool has_mt;
bool semi_mt;
enum touchpad_model model;
unsigned int real_touches; /* number of slots */
unsigned int ntouches; /* no slots inc. fakes */