On Tue, Dec 04, 2012 at 06:43:42PM -0800, Ping Cheng wrote:
> Henrik added new MT routines in release 3.7. This patch is to
> prepare for the use of new MT routines.
>
> In the newly added wacom_abs_set_axis() function, the first
> if-statement assigns ABS_X/Y for number of contacts less or
> equal to 2. So, it is single and 2 finger touch devices. Two
> finger touch devices are processed here since they will not
> use the updtaed input_mt_init_slots(), which does not offer
> benefit to those devices.
>
> input_mt_init_slots() will take care of ABS_X/Y assignment when
> flags are not zero. All touch devices with more than two contacts
> will use input_mt_init_slots() with non-zero flags.
>
> The second if-statement is for all MT devices, which include two
> finger touch devices.
>
> Signed-off-by: Ping Cheng <pingc@xxxxxxxxx>
> Reviewed-by: Henrik Rydberg <rydberg@xxxxxxxxxxx>
> ---
> drivers/input/tablet/wacom_wac.c | 85 ++++++++++++++++++++------------------
> 1 file changed, 45 insertions(+), 40 deletions(-)
>
> diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
> index c0f3e91..097b559 100644
> --- a/drivers/input/tablet/wacom_wac.c
> +++ b/drivers/input/tablet/wacom_wac.c
> @@ -1444,39 +1444,64 @@ static unsigned int wacom_calculate_touch_res(unsigned int logical_max,
> return (logical_max * 100) / physical_max;
> }
>
> -int wacom_setup_input_capabilities(struct input_dev *input_dev,
> - struct wacom_wac *wacom_wac)
> +static void wacom_abs_set_axis(struct input_dev *input_dev,
> + struct wacom_wac *wacom_wac)
> {
> struct wacom_features *features = &wacom_wac->features;
> - int i;
> -
> - input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
> -
> - __set_bit(BTN_TOUCH, input_dev->keybit);
> -
> - input_set_abs_params(input_dev, ABS_X, 0, features->x_max,
> - features->x_fuzz, 0);
> - input_set_abs_params(input_dev, ABS_Y, 0, features->y_max,
> - features->y_fuzz, 0);
>
> if (features->device_type == BTN_TOOL_PEN) {
> - input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max,
> - features->pressure_fuzz, 0);
> + input_set_abs_params(input_dev, ABS_X, 0, features->x_max,
> + features->x_fuzz, 0);
> + input_set_abs_params(input_dev, ABS_Y, 0, features->y_max,
> + features->y_fuzz, 0);
> + input_set_abs_params(input_dev, ABS_PRESSURE, 0,
> + features->pressure_max, features->pressure_fuzz, 0);
>
> /* penabled devices have fixed resolution for each model */
> input_abs_set_res(input_dev, ABS_X, features->x_resolution);
> input_abs_set_res(input_dev, ABS_Y, features->y_resolution);
> } else {
> - input_abs_set_res(input_dev, ABS_X,
> - wacom_calculate_touch_res(features->x_max,
> - features->x_phy));
> - input_abs_set_res(input_dev, ABS_Y,
> - wacom_calculate_touch_res(features->y_max,
> - features->y_phy));
> + if (features->touch_max <= 2) {
> + input_set_abs_params(input_dev, ABS_X, 0,
> + features->x_max, features->x_fuzz, 0);
> + input_set_abs_params(input_dev, ABS_Y, 0,
> + features->y_max, features->y_fuzz, 0);
> + input_abs_set_res(input_dev, ABS_X,
> + wacom_calculate_touch_res(features->x_max,
> + features->x_phy));
> + input_abs_set_res(input_dev, ABS_Y,
> + wacom_calculate_touch_res(features->y_max,
> + features->y_phy));
> + }
> +
> + if (features->touch_max > 1) {
> + input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0,
> + features->x_max, features->x_fuzz, 0);
> + input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0,
> + features->y_max, features->y_fuzz, 0);
> + input_abs_set_res(input_dev, ABS_MT_POSITION_X,
> + wacom_calculate_touch_res(features->x_max,
> + features->x_phy));
> + input_abs_set_res(input_dev, ABS_MT_POSITION_Y,
> + wacom_calculate_touch_res(features->y_max,
> + features->y_phy));
> + }
> }
> +}
>
> +int wacom_setup_input_capabilities(struct input_dev *input_dev,
> + struct wacom_wac *wacom_wac)
> +{
> + struct wacom_features *features = &wacom_wac->features;
> + int i;
> +
> + input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
> +
> + __set_bit(BTN_TOUCH, input_dev->keybit);
> __set_bit(ABS_MISC, input_dev->absbit);
>
> + wacom_abs_set_axis(input_dev, wacom_wac);
> +
> switch (wacom_wac->features.type) {
> case WACOM_MO:
> input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
> @@ -1625,13 +1650,6 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
> 0, features->x_max, 0, 0);
> input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR,
> 0, features->y_max, 0, 0);
> -
> - input_set_abs_params(input_dev, ABS_MT_POSITION_X,
> - 0, features->x_max,
> - features->x_fuzz, 0);
> - input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
> - 0, features->y_max,
> - features->y_fuzz, 0);
> }
> break;
>
> @@ -1677,12 +1695,6 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
> case TABLETPC2FG:
> if (features->device_type == BTN_TOOL_FINGER) {
> input_mt_init_slots(input_dev, features->touch_max, 0);
> - input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE,
> - 0, MT_TOOL_MAX, 0, 0);
> - input_set_abs_params(input_dev, ABS_MT_POSITION_X,
> - 0, features->x_max, 0, 0);
> - input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
> - 0, features->y_max, 0, 0);
> }
> /* fall through */
>
> @@ -1747,13 +1759,6 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
> ABS_MT_TOUCH_MINOR,
> 0, features->y_max, 0, 0);
> }
> -
> - input_set_abs_params(input_dev, ABS_MT_POSITION_X,
> - 0, features->x_max,
> - features->x_fuzz, 0);
> - input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
> - 0, features->y_max,
> - features->y_fuzz, 0);
> } else if (features->device_type == BTN_TOOL_PEN) {
> __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
> __set_bit(BTN_TOOL_PEN, input_dev->keybit);
> --
> 1.7.10.4
>
Reviewed-by: Henrik Rydberg <rydberg@xxxxxxxxxxx>
Thanks,
Henrik
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