From b6d2d3289f84e9c7449dff04fb959e29207acd80 Mon Sep 17 00:00:00 2001 From: Sjoerd Simons Date: Mon, 6 Apr 2015 13:10:30 -0700 Subject: [PATCH] Input: atmel_mxt_ts - split out touchpad initialisation logic If the "linux,gpio-keymap" DT property is defined, the T19 keys are configured and the device is setup as a touchpad rather than a touchscreen. The logic is part of the input device initialization routine but it can be factored out to its own function to simplify the former. Signed-off-by: Sjoerd Simons Signed-off-by: Javier Martinez Canillas Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/atmel_mxt_ts.c | 52 ++++++++++++++---------- 1 file changed, 30 insertions(+), 22 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 1b3b845d92f4..2875ddf37289 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -1822,15 +1822,37 @@ static int mxt_read_t100_config(struct mxt_data *data) static int mxt_input_open(struct input_dev *dev); static void mxt_input_close(struct input_dev *dev); +static void mxt_set_up_as_touchpad(struct input_dev *input_dev, + struct mxt_data *data) +{ + const struct mxt_platform_data *pdata = data->pdata; + int i; + + input_dev->name = "Atmel maXTouch Touchpad"; + + __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); + + input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_X, + MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_Y, + MXT_PIXELS_PER_MM); + + for (i = 0; i < pdata->t19_num_keys; i++) + if (pdata->t19_keymap[i] != KEY_RESERVED) + input_set_capability(input_dev, EV_KEY, + pdata->t19_keymap[i]); +} + static int mxt_initialize_input_device(struct mxt_data *data) { - struct device *dev = &data->client->dev; const struct mxt_platform_data *pdata = data->pdata; + struct device *dev = &data->client->dev; struct input_dev *input_dev; int error; unsigned int num_mt_slots; unsigned int mt_flags = 0; - int i; switch (data->multitouch) { case MXT_TOUCH_MULTI_T9: @@ -1867,26 +1889,6 @@ static int mxt_initialize_input_device(struct mxt_data *data) input_set_capability(input_dev, EV_KEY, BTN_TOUCH); - if (pdata->t19_num_keys) { - __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); - - for (i = 0; i < pdata->t19_num_keys; i++) - if (pdata->t19_keymap[i] != KEY_RESERVED) - input_set_capability(input_dev, EV_KEY, - pdata->t19_keymap[i]); - - mt_flags |= INPUT_MT_POINTER; - - input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); - input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); - input_abs_set_res(input_dev, ABS_MT_POSITION_X, - MXT_PIXELS_PER_MM); - input_abs_set_res(input_dev, ABS_MT_POSITION_Y, - MXT_PIXELS_PER_MM); - - input_dev->name = "Atmel maXTouch Touchpad"; - } - /* For single touch */ input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); input_set_abs_params(input_dev, ABS_Y, 0, data->max_y, 0, 0); @@ -1897,6 +1899,12 @@ static int mxt_initialize_input_device(struct mxt_data *data) input_set_abs_params(input_dev, ABS_PRESSURE, 0, 255, 0, 0); } + /* If device has buttons we assume it is a touchpad */ + if (pdata->t19_num_keys) { + mxt_set_up_as_touchpad(input_dev, data); + mt_flags |= INPUT_MT_POINTER; + } + /* For multi touch */ error = input_mt_init_slots(input_dev, num_mt_slots, mt_flags); if (error) { -- 2.30.2