diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c index 6bad23ee47a1..2aae880c8aa6 100644 --- a/drivers/input/touchscreen/ad7879.c +++ b/drivers/input/touchscreen/ad7879.c @@ -29,10 +29,9 @@ #include #include #include -#include +#include #include -#include #include #include "ad7879.h" @@ -452,47 +451,36 @@ static void ad7879_gpio_set_value(struct gpio_chip *chip, mutex_unlock(&ts->mutex); } -static int ad7879_gpio_add(struct ad7879 *ts, - const struct ad7879_platform_data *pdata) +static int ad7879_gpio_add(struct ad7879 *ts) { - bool gpio_export; - int gpio_base; int ret = 0; - if (pdata) { - gpio_export = pdata->gpio_export; - gpio_base = pdata->gpio_base; - } else { - gpio_export = device_property_read_bool(ts->dev, - "gpio-controller"); - gpio_base = -1; - } - mutex_init(&ts->mutex); - if (gpio_export) { - ts->gc.direction_input = ad7879_gpio_direction_input; - ts->gc.direction_output = ad7879_gpio_direction_output; - ts->gc.get = ad7879_gpio_get_value; - ts->gc.set = ad7879_gpio_set_value; - ts->gc.can_sleep = 1; - ts->gc.base = gpio_base; - ts->gc.ngpio = 1; - ts->gc.label = "AD7879-GPIO"; - ts->gc.owner = THIS_MODULE; - ts->gc.parent = ts->dev; + /* Do not create a chip unless flagged for it */ + if (!device_property_read_bool(ts->dev, "gpio-controller")) + return 0; - ret = devm_gpiochip_add_data(ts->dev, &ts->gc, ts); - if (ret) - dev_err(ts->dev, "failed to register gpio %d\n", - ts->gc.base); - } + ts->gc.direction_input = ad7879_gpio_direction_input; + ts->gc.direction_output = ad7879_gpio_direction_output; + ts->gc.get = ad7879_gpio_get_value; + ts->gc.set = ad7879_gpio_set_value; + ts->gc.can_sleep = 1; + ts->gc.base = -1; + ts->gc.ngpio = 1; + ts->gc.label = "AD7879-GPIO"; + ts->gc.owner = THIS_MODULE; + ts->gc.parent = ts->dev; + + ret = devm_gpiochip_add_data(ts->dev, &ts->gc, ts); + if (ret) + dev_err(ts->dev, "failed to register gpio %d\n", + ts->gc.base); return ret; } #else -static int ad7879_gpio_add(struct ad7879 *ts, - const struct ad7879_platform_data *pdata) +static int ad7879_gpio_add(struct ad7879 *ts) { return 0; } @@ -527,7 +515,6 @@ static int ad7879_parse_dt(struct device *dev, struct ad7879 *ts) int ad7879_probe(struct device *dev, struct regmap *regmap, int irq, u16 bustype, u8 devid) { - struct ad7879_platform_data *pdata = dev_get_platdata(dev); struct ad7879 *ts; struct input_dev *input_dev; int err; @@ -542,22 +529,9 @@ int ad7879_probe(struct device *dev, struct regmap *regmap, if (!ts) return -ENOMEM; - if (pdata) { - /* Platform data use swapped axis (backward compatibility) */ - ts->swap_xy = !pdata->swap_xy; - - ts->x_plate_ohms = pdata->x_plate_ohms ? : 400; - - ts->first_conversion_delay = pdata->first_conversion_delay; - ts->acquisition_time = pdata->acquisition_time; - ts->averaging = pdata->averaging; - ts->pen_down_acc_interval = pdata->pen_down_acc_interval; - ts->median = pdata->median; - } else { - err = ad7879_parse_dt(dev, ts); - if (err) - return err; - } + err = ad7879_parse_dt(dev, ts); + if (err) + return err; input_dev = devm_input_allocate_device(dev); if (!input_dev) { @@ -585,28 +559,13 @@ int ad7879_probe(struct device *dev, struct regmap *regmap, input_set_capability(input_dev, EV_KEY, BTN_TOUCH); - if (pdata) { - input_set_abs_params(input_dev, ABS_X, - pdata->x_min ? : 0, - pdata->x_max ? : MAX_12BIT, - 0, 0); - input_set_abs_params(input_dev, ABS_Y, - pdata->y_min ? : 0, - pdata->y_max ? : MAX_12BIT, - 0, 0); - input_set_abs_params(input_dev, ABS_PRESSURE, - pdata->pressure_min, - pdata->pressure_max ? : ~0, - 0, 0); - } else { - input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, 0, 0); - input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0); - input_set_capability(input_dev, EV_ABS, ABS_PRESSURE); - touchscreen_parse_properties(input_dev, false, NULL); - if (!input_abs_get_max(input_dev, ABS_PRESSURE)) { - dev_err(dev, "Touchscreen pressure is not specified\n"); - return -EINVAL; - } + input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, 0, 0); + input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, 0, 0); + input_set_capability(input_dev, EV_ABS, ABS_PRESSURE); + touchscreen_parse_properties(input_dev, false, NULL); + if (!input_abs_get_max(input_dev, ABS_PRESSURE)) { + dev_err(dev, "Touchscreen pressure is not specified\n"); + return -EINVAL; } err = ad7879_write(ts, AD7879_REG_CTRL2, AD7879_RESET); @@ -655,7 +614,7 @@ int ad7879_probe(struct device *dev, struct regmap *regmap, if (err) return err; - err = ad7879_gpio_add(ts, pdata); + err = ad7879_gpio_add(ts); if (err) return err; diff --git a/include/linux/platform_data/ad7879.h b/include/linux/platform_data/ad7879.h deleted file mode 100644 index 6655cc8453ac..000000000000 --- a/include/linux/platform_data/ad7879.h +++ /dev/null @@ -1,42 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* linux/platform_data/ad7879.h */ - -/* Touchscreen characteristics vary between boards and models. The - * platform_data for the device's "struct device" holds this information. - * - * It's OK if the min/max values are zero. - */ -struct ad7879_platform_data { - u16 model; /* 7879 */ - u16 x_plate_ohms; - u16 x_min, x_max; - u16 y_min, y_max; - u16 pressure_min, pressure_max; - - bool swap_xy; /* swap x and y axes */ - - /* [0..255] 0=OFF Starts at 1=550us and goes - * all the way to 9.440ms in steps of 35us. - */ - u8 pen_down_acc_interval; - /* [0..15] Starts at 0=128us and goes all the - * way to 4.096ms in steps of 128us. - */ - u8 first_conversion_delay; - /* [0..3] 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */ - u8 acquisition_time; - /* [0..3] Average X middle samples 0 = 2, 1 = 4, 2 = 8, 3 = 16 */ - u8 averaging; - /* [0..3] Perform X measurements 0 = OFF, - * 1 = 4, 2 = 8, 3 = 16 (median > averaging) - */ - u8 median; - /* 1 = AUX/VBAT/GPIO export GPIO to gpiolib - * requires CONFIG_GPIOLIB - */ - bool gpio_export; - /* identifies the first GPIO number handled by this chip; - * or, if negative, requests dynamic ID allocation. - */ - s32 gpio_base; -};