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Input: penmount - add PenMount 6000 support

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Add support for PenMount 6000 touch controller.

Signed-off-by: John Sung <penmount.touch@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
John Sung 2011-09-09 13:33:12 -07:00 committed by Dmitry Torokhov
parent 21ae508bab
commit c42e2e406a
1 changed files with 57 additions and 8 deletions
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65
drivers/input/touchscreen/penmount.c
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@ -33,7 +33,7 @@ MODULE_LICENSE("GPL");
* Definitions & global arrays.
*/
#define PM_MAX_LENGTH 5
#define PM_MAX_LENGTH 6
/*
* Per-touchscreen data.
@ -45,8 +45,24 @@ struct pm {
int idx;
unsigned char data[PM_MAX_LENGTH];
char phys[32];
unsigned char packetsize;
};
/*
* pm_checkpacket() checks if data packet is valid
*/
static bool pm_checkpacket(unsigned char *packet)
{
int total = 0;
int i;
for (i = 0; i < 5; i++)
total += packet[i];
return packet[5] == (unsigned char)~(total & 0xff);
}
static irqreturn_t pm_interrupt(struct serio *serio,
unsigned char data, unsigned int flags)
{
@ -55,14 +71,34 @@ static irqreturn_t pm_interrupt(struct serio *serio,
pm->data[pm->idx] = data;
if (pm->data[0] & 0x80) {
if (PM_MAX_LENGTH == ++pm->idx) {
input_report_abs(dev, ABS_X, pm->data[1] * 128 + pm->data[2]);
input_report_abs(dev, ABS_Y, pm->data[3] * 128 + pm->data[4]);
input_report_key(dev, BTN_TOUCH, !!(pm->data[0] & 0x40));
input_sync(dev);
pm->idx = 0;
switch (pm->dev->id.product) {
case 0x9000:
if (pm->data[0] & 0x80) {
if (pm->packetsize == ++pm->idx) {
input_report_abs(dev, ABS_X, pm->data[1] * 128 + pm->data[2]);
input_report_abs(dev, ABS_Y, pm->data[3] * 128 + pm->data[4]);
input_report_key(dev, BTN_TOUCH, !!(pm->data[0] & 0x40));
input_sync(dev);
pm->idx = 0;
}
}
break;
case 0x6000:
if ((pm->data[0] & 0xbf) == 0x30) {
if (pm->packetsize == ++pm->idx) {
if (pm_checkpacket(pm->data)) {
input_report_abs(dev, ABS_X,
pm->data[2] * 256 + pm->data[1]);
input_report_abs(dev, ABS_Y,
pm->data[4] * 256 + pm->data[3]);
input_report_key(dev, BTN_TOUCH, !!(pm->data[0] & 0x40));
input_sync(dev);
}
pm->idx = 0;
}
}
break;
}
return IRQ_HANDLED;
@ -120,6 +156,19 @@ static int pm_connect(struct serio *serio, struct serio_driver *drv)
input_set_abs_params(pm->dev, ABS_X, 0, 0x3ff, 0, 0);
input_set_abs_params(pm->dev, ABS_Y, 0, 0x3ff, 0, 0);
switch (serio->id.id) {
default:
case 0:
pm->packetsize = 5;
input_dev->id.product = 0x9000;
break;
case 1:
pm->packetsize = 6;
input_dev->id.product = 0x6000;
break;
}
serio_set_drvdata(serio, pm);
err = serio_open(serio, drv);