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Input: wacom_w8001 - split pen and touch initialization up

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This is preparation work for splitting it up for two event nodes.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Peter Hutterer 2015-12-03 12:25:09 -08:00 • committed by Dmitry Torokhov
parent e171735410
commit 5d0a4fe2a9
1 changed files with 107 additions and 79 deletions
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58
drivers/input/touchscreen/wacom_w8001.c
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@ -380,12 +380,10 @@ static void w8001_close(struct input_dev *dev)
w8001_command(w8001, W8001_CMD_STOP, false);
}
static int w8001_setup(struct w8001 *w8001)
static int w8001_detect(struct w8001 *w8001)
{
struct input_dev *dev = w8001->dev;
struct w8001_coord coord;
struct w8001_touch_query touch;
int error, err_pen, err_touch;
int error;
error = w8001_command(w8001, W8001_CMD_STOP, false);
if (error)
@ -399,9 +397,20 @@ static int w8001_setup(struct w8001 *w8001)
__set_bit(INPUT_PROP_DIRECT, dev->propbit);
return 0;
}
static int w8001_setup_pen(struct w8001 *w8001)
{
struct input_dev *dev = w8001->dev;
struct w8001_coord coord;
int error;
/* penabled? */
err_pen = w8001_command(w8001, W8001_CMD_QUERY, true);
if (!err_pen) {
error = w8001_command(w8001, W8001_CMD_QUERY, true);
if (error)
return error;
__set_bit(BTN_TOUCH, dev->keybit);
__set_bit(BTN_TOOL_PEN, dev->keybit);
__set_bit(BTN_TOOL_RUBBER, dev->keybit);
@ -421,17 +430,30 @@ static int w8001_setup(struct w8001 *w8001)
input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0);
input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0);
}
w8001->id = 0x90;
strlcat(w8001->name, " Penabled", sizeof(w8001->name));
return 0;
}
static int w8001_setup_touch(struct w8001 *w8001)
{
struct input_dev *dev = w8001->dev;
struct w8001_touch_query touch;
int error;
/* Touch enabled? */
err_touch = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true);
error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true);
if (error)
return error;
/*
* Some non-touch devices may reply to the touch query. But their
* second byte is empty, which indicates touch is not supported.
*/
if (!w8001->response[1])
return -ENXIO;
if (!err_touch && !w8001->response[1])
err_touch = -ENXIO;
if (!err_touch) {
__set_bit(BTN_TOUCH, dev->keybit);
__set_bit(BTN_TOOL_FINGER, dev->keybit);
@ -486,11 +508,10 @@ static int w8001_setup(struct w8001 *w8001)
w8001->id = 0xE2;
break;
}
}
strlcat(w8001->name, " Touchscreen", sizeof(w8001->name));
return !err_pen || !err_touch ? 0 : -ENXIO;
return 0;
}
/*
@ -519,7 +540,7 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
{
struct w8001 *w8001;
struct input_dev *input_dev;
int err;
int err, err_pen, err_touch;
w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL);
input_dev = input_allocate_device();
@ -538,10 +559,17 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
if (err)
goto fail2;
err = w8001_setup(w8001);
err = w8001_detect(w8001);
if (err)
goto fail3;
err_pen = w8001_setup_pen(w8001);
err_touch = w8001_setup_touch(w8001);
if (err_pen && err_touch) {
err = -ENXIO;
goto fail3;
}
input_dev->name = w8001->name;
input_dev->phys = w8001->phys;
input_dev->id.product = w8001->id;