From 5d0a4fe2a9347b05bc5db2963cb7cd6cf014a9ed Mon Sep 17 00:00:00 2001 From: Peter Hutterer Date: Thu, 3 Dec 2015 12:25:09 -0800 Subject: [PATCH] Input: wacom_w8001 - split pen and touch initialization up This is preparation work for splitting it up for two event nodes. Signed-off-by: Peter Hutterer Acked-by: Benjamin Tissoires Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/wacom_w8001.c | 194 ++++++++++++++---------- 1 file changed, 111 insertions(+), 83 deletions(-) diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index 9ea5f8226a31..de8f0e47fc3d 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -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) @@ -399,98 +397,121 @@ 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) { - __set_bit(BTN_TOUCH, dev->keybit); - __set_bit(BTN_TOOL_PEN, dev->keybit); - __set_bit(BTN_TOOL_RUBBER, dev->keybit); - __set_bit(BTN_STYLUS, dev->keybit); - __set_bit(BTN_STYLUS2, dev->keybit); - - parse_pen_data(w8001->response, &coord); - w8001->max_pen_x = coord.x; - w8001->max_pen_y = coord.y; - - input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0); - input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0); - input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION); - input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION); - input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0); - if (coord.tilt_x && coord.tilt_y) { - 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)); + 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); + __set_bit(BTN_STYLUS, dev->keybit); + __set_bit(BTN_STYLUS2, dev->keybit); + + parse_pen_data(w8001->response, &coord); + w8001->max_pen_x = coord.x; + w8001->max_pen_y = coord.y; + + input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0); + input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0); + input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION); + input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION); + input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0); + if (coord.tilt_x && coord.tilt_y) { + 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; + __set_bit(BTN_TOUCH, dev->keybit); + __set_bit(BTN_TOOL_FINGER, dev->keybit); - if (!err_touch) { - __set_bit(BTN_TOUCH, dev->keybit); - __set_bit(BTN_TOOL_FINGER, dev->keybit); + parse_touchquery(w8001->response, &touch); + w8001->max_touch_x = touch.x; + w8001->max_touch_y = touch.y; - parse_touchquery(w8001->response, &touch); - w8001->max_touch_x = touch.x; - w8001->max_touch_y = touch.y; + if (w8001->max_pen_x && w8001->max_pen_y) { + /* if pen is supported scale to pen maximum */ + touch.x = w8001->max_pen_x; + touch.y = w8001->max_pen_y; + touch.panel_res = W8001_PEN_RESOLUTION; + } - if (w8001->max_pen_x && w8001->max_pen_y) { - /* if pen is supported scale to pen maximum */ - touch.x = w8001->max_pen_x; - touch.y = w8001->max_pen_y; - touch.panel_res = W8001_PEN_RESOLUTION; - } + input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0); + input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0); + input_abs_set_res(dev, ABS_X, touch.panel_res); + input_abs_set_res(dev, ABS_Y, touch.panel_res); - input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0); - input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0); - input_abs_set_res(dev, ABS_X, touch.panel_res); - input_abs_set_res(dev, ABS_Y, touch.panel_res); - - switch (touch.sensor_id) { - case 0: - case 2: - w8001->pktlen = W8001_PKTLEN_TOUCH93; - w8001->id = 0x93; - strlcat(w8001->name, " 1FG", sizeof(w8001->name)); - break; + switch (touch.sensor_id) { + case 0: + case 2: + w8001->pktlen = W8001_PKTLEN_TOUCH93; + w8001->id = 0x93; + strlcat(w8001->name, " 1FG", sizeof(w8001->name)); + break; - case 1: - case 3: - case 4: - w8001->pktlen = W8001_PKTLEN_TOUCH9A; - strlcat(w8001->name, " 1FG", sizeof(w8001->name)); - w8001->id = 0x9a; - break; + case 1: + case 3: + case 4: + w8001->pktlen = W8001_PKTLEN_TOUCH9A; + strlcat(w8001->name, " 1FG", sizeof(w8001->name)); + w8001->id = 0x9a; + break; - case 5: - w8001->pktlen = W8001_PKTLEN_TOUCH2FG; - - __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); - input_mt_init_slots(dev, 2, 0); - input_set_abs_params(dev, ABS_MT_POSITION_X, - 0, touch.x, 0, 0); - input_set_abs_params(dev, ABS_MT_POSITION_Y, - 0, touch.y, 0, 0); - input_set_abs_params(dev, ABS_MT_TOOL_TYPE, - 0, MT_TOOL_MAX, 0, 0); - - strlcat(w8001->name, " 2FG", sizeof(w8001->name)); - if (w8001->max_pen_x && w8001->max_pen_y) - w8001->id = 0xE3; - else - w8001->id = 0xE2; - break; - } + case 5: + w8001->pktlen = W8001_PKTLEN_TOUCH2FG; + + __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); + input_mt_init_slots(dev, 2, 0); + input_set_abs_params(dev, ABS_MT_POSITION_X, + 0, touch.x, 0, 0); + input_set_abs_params(dev, ABS_MT_POSITION_Y, + 0, touch.y, 0, 0); + input_set_abs_params(dev, ABS_MT_TOOL_TYPE, + 0, MT_TOOL_MAX, 0, 0); + + strlcat(w8001->name, " 2FG", sizeof(w8001->name)); + if (w8001->max_pen_x && w8001->max_pen_y) + w8001->id = 0xE3; + else + 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; -- 2.20.1