Input: penmount - add PenMount 3000 support
Add dual touch support for PenMount 3000 touch controller.
Signed-off-by: John Sung <penmount.touch@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/touchscreen/penmount.c b/drivers/input/touchscreen/penmount.c
index e9117ad..71422b9 100644
--- a/drivers/input/touchscreen/penmount.c
+++ b/drivers/input/touchscreen/penmount.c
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
+#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/init.h>
@@ -34,6 +35,17 @@
*/
#define PM_MAX_LENGTH 6
+#define PM_MAX_MTSLOT 16
+#define PM_3000_MTSLOT 2
+
+/*
+ * Multi-touch slot
+ */
+
+struct mt_slot {
+ unsigned short x, y;
+ bool active; /* is the touch valid? */
+};
/*
* Per-touchscreen data.
@@ -46,9 +58,33 @@
unsigned char data[PM_MAX_LENGTH];
char phys[32];
unsigned char packetsize;
+ unsigned char maxcontacts;
+ struct mt_slot slots[PM_MAX_MTSLOT];
};
/*
+ * pm_mtevent() sends mt events and also emulates pointer movement
+ */
+
+static void pm_mtevent(struct pm *pm, struct input_dev *input)
+{
+ int i;
+
+ for (i = 0; i < pm->maxcontacts; ++i) {
+ input_mt_slot(input, i);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER,
+ pm->slots[i].active);
+ if (pm->slots[i].active) {
+ input_event(input, EV_ABS, ABS_MT_POSITION_X, pm->slots[i].x);
+ input_event(input, EV_ABS, ABS_MT_POSITION_Y, pm->slots[i].y);
+ }
+ }
+
+ input_mt_report_pointer_emulation(input, true);
+ input_sync(input);
+}
+
+/*
* pm_checkpacket() checks if data packet is valid
*/
@@ -99,6 +135,21 @@
}
}
break;
+
+ case 0x3000:
+ if ((pm->data[0] & 0xce) == 0x40) {
+ if (pm->packetsize == ++pm->idx) {
+ if (pm_checkpacket(pm->data)) {
+ int slotnum = pm->data[0] & 0x0f;
+ pm->slots[slotnum].active = pm->data[0] & 0x30;
+ pm->slots[slotnum].x = pm->data[2] * 256 + pm->data[1];
+ pm->slots[slotnum].y = pm->data[4] * 256 + pm->data[3];
+ pm_mtevent(pm, dev);
+ }
+ pm->idx = 0;
+ }
+ }
+ break;
}
return IRQ_HANDLED;
@@ -130,6 +181,7 @@
{
struct pm *pm;
struct input_dev *input_dev;
+ int max_x, max_y;
int err;
pm = kzalloc(sizeof(struct pm), GFP_KERNEL);
@@ -142,6 +194,7 @@
pm->serio = serio;
pm->dev = input_dev;
snprintf(pm->phys, sizeof(pm->phys), "%s/input0", serio->phys);
+ pm->maxcontacts = 1;
input_dev->name = "PenMount Serial TouchScreen";
input_dev->phys = pm->phys;
@@ -151,22 +204,40 @@
input_dev->id.version = 0x0100;
input_dev->dev.parent = &serio->dev;
- input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
- input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
- input_set_abs_params(pm->dev, ABS_X, 0, 0x3ff, 0, 0);
- input_set_abs_params(pm->dev, ABS_Y, 0, 0x3ff, 0, 0);
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
switch (serio->id.id) {
default:
case 0:
pm->packetsize = 5;
input_dev->id.product = 0x9000;
+ max_x = max_y = 0x3ff;
break;
case 1:
pm->packetsize = 6;
input_dev->id.product = 0x6000;
+ max_x = max_y = 0x3ff;
break;
+
+ case 2:
+ pm->packetsize = 6;
+ input_dev->id.product = 0x3000;
+ max_x = max_y = 0x7ff;
+ pm->maxcontacts = PM_3000_MTSLOT;
+ break;
+ }
+
+ input_set_abs_params(pm->dev, ABS_X, 0, max_x, 0, 0);
+ input_set_abs_params(pm->dev, ABS_Y, 0, max_y, 0, 0);
+
+ if (pm->maxcontacts > 1) {
+ input_mt_init_slots(pm->dev, pm->maxcontacts);
+ input_set_abs_params(pm->dev,
+ ABS_MT_POSITION_X, 0, max_x, 0, 0);
+ input_set_abs_params(pm->dev,
+ ABS_MT_POSITION_Y, 0, max_y, 0, 0);
}
serio_set_drvdata(serio, pm);