From f67cc3e927d8414ad3872e046764534ea1f5db0d Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 9 Feb 2019 08:49:38 -0800 Subject: Input: ili210x - fetch touchscreen geometry from DT Fetching the geometry from the ILI251x registers seems unreliable and sometimes returns all zeroes. Add support for fetching the geometry and axis inversion from DT instead. Signed-off-by: Marek Vasut Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/ili210x.c | 51 ++++++++----------------------------- 1 file changed, 11 insertions(+), 40 deletions(-) (limited to 'drivers/input') diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c index af1dd9cff12a..9169aa03958a 100644 --- a/drivers/input/touchscreen/ili210x.c +++ b/drivers/input/touchscreen/ili210x.c @@ -4,6 +4,7 @@ #include #include #include +#include #include #include #include @@ -20,15 +21,6 @@ #define REG_FIRMWARE_VERSION 0x40 #define REG_CALIBRATE 0xcc -struct panel_info { - u8 x_low; - u8 x_high; - u8 y_low; - u8 y_high; - u8 xchannel_num; - u8 ychannel_num; -} __packed; - struct firmware_version { u8 id; u8 major; @@ -46,6 +38,7 @@ struct ili210x { unsigned int poll_period; struct delayed_work dwork; struct gpio_desc *reset_gpio; + struct touchscreen_properties prop; enum ili2xxx_model model; unsigned int max_touches; }; @@ -149,8 +142,6 @@ static bool ili210x_report_events(struct ili210x *priv, u8 *touchdata) unsigned int x = 0, y = 0; for (i = 0; i < priv->max_touches; i++) { - input_mt_slot(input, i); - if (priv->model == MODEL_ILI210X) { touch = ili210x_touchdata_to_coords(priv, touchdata, i, &x, &y); @@ -161,11 +152,12 @@ static bool ili210x_report_events(struct ili210x *priv, u8 *touchdata) contact = true; } + input_mt_slot(input, i); input_mt_report_slot_state(input, MT_TOOL_FINGER, touch); - if (touch) { - input_report_abs(input, ABS_MT_POSITION_X, x); - input_report_abs(input, ABS_MT_POSITION_Y, y); - } + if (!touch) + continue; + touchscreen_report_pos(input, &priv->prop, x, y, + true); } input_mt_report_pointer_emulation(input, false); @@ -274,10 +266,8 @@ static int ili210x_i2c_probe(struct i2c_client *client, struct ili210x *priv; struct gpio_desc *reset_gpio; struct input_dev *input; - struct panel_info panel; struct firmware_version firmware; enum ili2xxx_model model; - int xmax, ymax; int error; model = (enum ili2xxx_model)id->driver_data; @@ -334,35 +324,16 @@ static int ili210x_i2c_probe(struct i2c_client *client, return error; } - /* get panel info */ - error = ili210x_read_reg(client, REG_PANEL_INFO, &panel, sizeof(panel)); - if (error) { - dev_err(dev, "Failed to get panel information, err: %d\n", - error); - return error; - } - - xmax = panel.x_low | (panel.x_high << 8); - ymax = panel.y_low | (panel.y_high << 8); - /* Setup input device */ input->name = "ILI210x Touchscreen"; input->id.bustype = BUS_I2C; input->dev.parent = dev; - __set_bit(EV_SYN, input->evbit); - __set_bit(EV_KEY, input->evbit); - __set_bit(EV_ABS, input->evbit); - __set_bit(BTN_TOUCH, input->keybit); - - /* Single touch */ - input_set_abs_params(input, ABS_X, 0, xmax, 0, 0); - input_set_abs_params(input, ABS_Y, 0, ymax, 0, 0); - /* Multi touch */ - input_mt_init_slots(input, priv->max_touches, 0); - input_set_abs_params(input, ABS_MT_POSITION_X, 0, xmax, 0, 0); - input_set_abs_params(input, ABS_MT_POSITION_Y, 0, ymax, 0, 0); + input_set_abs_params(input, ABS_MT_POSITION_X, 0, 0xffff, 0, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, 0, 0xffff, 0, 0); + touchscreen_parse_properties(input, true, &priv->prop); + input_mt_init_slots(input, priv->max_touches, INPUT_MT_DIRECT); error = devm_add_action(dev, ili210x_cancel_work, priv); if (error) -- cgit v1.2.3-55-g7522