diff --git a/drivers/input/CMakeLists.txt b/drivers/input/CMakeLists.txt index 019c5979a0526..2e205cc686896 100644 --- a/drivers/input/CMakeLists.txt +++ b/drivers/input/CMakeLists.txt @@ -15,6 +15,7 @@ zephyr_library_sources_ifdef(CONFIG_INPUT_CST816S input_cst816s.c) zephyr_library_sources_ifdef(CONFIG_INPUT_CY8CMBR3XXX input_cy8cmbr3xxx.c) zephyr_library_sources_ifdef(CONFIG_INPUT_ESP32_TOUCH_SENSOR input_esp32_touch_sensor.c) zephyr_library_sources_ifdef(CONFIG_INPUT_FT5336 input_ft5336.c) +zephyr_library_sources_ifdef(CONFIG_INPUT_FT6146 input_ft6146.c) zephyr_library_sources_ifdef(CONFIG_INPUT_GPIO_KBD_MATRIX input_gpio_kbd_matrix.c) zephyr_library_sources_ifdef(CONFIG_INPUT_GPIO_KEYS input_gpio_keys.c) zephyr_library_sources_ifdef(CONFIG_INPUT_GPIO_QDEC input_gpio_qdec.c) diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig index 5111c4db37d59..f14a5ab4073b5 100644 --- a/drivers/input/Kconfig +++ b/drivers/input/Kconfig @@ -17,6 +17,7 @@ source "drivers/input/Kconfig.cy8cmbr3xxx" source "drivers/input/Kconfig.esp32" source "drivers/input/Kconfig.evdev" source "drivers/input/Kconfig.ft5336" +source "drivers/input/Kconfig.ft6146" source "drivers/input/Kconfig.gpio_kbd_matrix" source "drivers/input/Kconfig.gpio_keys" source "drivers/input/Kconfig.gpio_qdec" diff --git a/drivers/input/Kconfig.ft6146 b/drivers/input/Kconfig.ft6146 new file mode 100644 index 0000000000000..a04a9c399683d --- /dev/null +++ b/drivers/input/Kconfig.ft6146 @@ -0,0 +1,28 @@ +# Copyright (c) 2025 Qingsong Gou +# SPDX-License-Identifier: Apache-2.0 + +menuconfig INPUT_FT6146 + bool "FT6146 touch controller" + default y + depends on DT_HAS_FOCALTECH_FT6146_ENABLED + select I2C + select INPUT_TOUCH + help + Enable driver for FT6146 capacitive touch controller. + +if INPUT_FT6146 + +config INPUT_FT6146_PERIOD + int "Sample period" + depends on !INPUT_FT6146_INTERRUPT + default 10 + help + Sample period in milliseconds when in polling mode. + +config INPUT_FT6146_INTERRUPT + bool "FT6146 interrupt support" + default y if $(dt_compat_any_has_prop,$(DT_COMPAT_FOCALTECH_FT6146),int-gpios) + help + Enable interrupt support for the FT6146 touch controller. + +endif # INPUT_FT6146 diff --git a/drivers/input/input_ft6146.c b/drivers/input/input_ft6146.c new file mode 100644 index 0000000000000..b94c156fc4209 --- /dev/null +++ b/drivers/input/input_ft6146.c @@ -0,0 +1,249 @@ +/* + * Copyright (c) 2025 Qingsong Gou + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#define DT_DRV_COMPAT focaltech_ft6146 + +#include +#include +#include +#include +#include +#include + +LOG_MODULE_REGISTER(ft6146, CONFIG_INPUT_LOG_LEVEL); + +/* FT6146 register definitions */ +#define FT6146_REG_DEVICE_MODE 0x00 +#define FT6146_REG_GEST_ID 0x01 +#define FT6146_REG_TD_STATUS 0x02 +#define FT6146_REG_P1_XH 0x03 +#define FT6146_REG_P1_XL 0x04 +#define FT6146_REG_P1_YH 0x05 +#define FT6146_REG_P1_YL 0x06 +#define FT6146_REG_P1_WEIGHT 0x07 +#define FT6146_REG_P1_MISC 0x08 +#define FT6146_REG_P2_XH 0x09 +#define FT6146_REG_P2_XL 0x0A +#define FT6146_REG_P2_YH 0x0B +#define FT6146_REG_P2_YL 0x0C +#define FT6146_REG_P2_WEIGHT 0x0D +#define FT6146_REG_P2_MISC 0x0E +#define FT6146_REG_THRESHOLD 0x80 +#define FT6146_REG_FILTER_COE 0x85 +#define FT6146_REG_CTRL 0x86 +#define FT6146_REG_TIMEENTERMONITOR 0x87 +#define FT6146_REG_PERIODACTIVE 0x88 +#define FT6146_REG_PERIODMONITOR 0x89 +#define FT6146_REG_RADIAN_VALUE 0x91 +#define FT6146_REG_OFFSET_LEFT_RIGHT 0x92 +#define FT6146_REG_OFFSET_UP_DOWN 0x93 +#define FT6146_REG_DIST_LEFT_RIGHT 0x94 +#define FT6146_REG_DIST_UP_DOWN 0x95 +#define FT6146_REG_ZOOM_DIS_SQR 0x96 +#define FT6146_REG_RADIAN_THRESHOLD 0x97 +#define FT6146_REG_SMALL_OBJECT_THRESHOLD 0x98 + +/* Device mode values */ +#define FT6146_DEVICE_MODE_NORMAL 0x00 +#define FT6146_DEVICE_MODE_TEST 0x04 +#define FT6146_DEVICE_MODE_SYSTEM 0x01 + +/* Gesture IDs */ +#define FT6146_GESTURE_NO_GESTURE 0x00 +#define FT6146_GESTURE_MOVE_UP 0x10 +#define FT6146_GESTURE_MOVE_RIGHT 0x14 +#define FT6146_GESTURE_MOVE_DOWN 0x18 +#define FT6146_GESTURE_MOVE_LEFT 0x1C +#define FT6146_GESTURE_ZOOM_IN 0x48 +#define FT6146_GESTURE_ZOOM_OUT 0x49 + +/* Reset timing */ +#define FT6146_RESET_DELAY_MS 10 +#define FT6146_POST_RESET_DELAY_MS 100 + +#define CTP_DOWN (0U) +#define CTP_UP (1U) +#define CTP_MOVE (2U) +#define CTP_RESERVE (3U) + +#define POSITION_H_MSK 0x0FU +#define EVENT_FLAG_MASK 0xC0U + +struct ft6146_data { + const struct device *dev; + struct gpio_callback int_cb; + struct k_work work; + struct k_timer poll_timer; +}; + +struct ft6146_config { + struct input_touchscreen_common_config common; + struct i2c_dt_spec i2c; + struct gpio_dt_spec reset_gpio; +#ifdef CONFIG_INPUT_FT6146_INTERRUPT + struct gpio_dt_spec int_gpio; +#endif +}; + +INPUT_TOUCH_STRUCT_CHECK(struct ft6146_config); + +static void ft6146_process_touch(const struct device *dev, uint8_t status) +{ + const struct ft6146_config *config = dev->config; + uint8_t point_data[9]; + uint8_t event_flag; + uint16_t x, y; + int ret; + + /* Read touch data */ + ret = i2c_burst_read_dt(&config->i2c, FT6146_REG_DEVICE_MODE, point_data, + sizeof(point_data)); + if (ret < 0) { + LOG_ERR("Failed to read touch data: %d", ret); + return; + } + + event_flag = FIELD_GET(EVENT_FLAG_MASK, point_data[FT6146_REG_P1_XH]); + x = ((point_data[FT6146_REG_P1_XH] & POSITION_H_MSK) << 8) + point_data[FT6146_REG_P1_XL]; + y = ((point_data[FT6146_REG_P1_YH] & POSITION_H_MSK) << 8) + point_data[FT6146_REG_P1_YL]; + + LOG_DBG("event_flag:%d, x:%d, y:%d", event_flag, x, y); + if ((event_flag == CTP_DOWN) || (event_flag == CTP_MOVE)) { + input_touchscreen_report_pos(dev, x, y, K_FOREVER); + input_report_key(dev, INPUT_BTN_TOUCH, 1, true, K_FOREVER); + } else if (event_flag == CTP_UP) { + input_report_key(dev, INPUT_BTN_TOUCH, 0, true, K_FOREVER); + } +} + +static void ft6146_work_handler(struct k_work *work) +{ + struct ft6146_data *data = CONTAINER_OF(work, struct ft6146_data, work); + const struct device *dev = data->dev; + + ft6146_process_touch(dev, 0); +} + +#ifndef CONFIG_INPUT_FT6146_INTERRUPT +static void ft6146_poll_timer_handler(struct k_timer *timer) +{ + struct ft6146_data *data = CONTAINER_OF(timer, struct ft6146_data, poll_timer); + + k_work_submit(&data->work); +} +#else +static void ft6146_isr_handler(const struct device *dev, struct gpio_callback *cb, uint32_t pins) +{ + struct ft6146_data *data = CONTAINER_OF(cb, struct ft6146_data, int_cb); + + k_work_submit(&data->work); +} +#endif + +static int ft6146_reset(const struct device *dev) +{ + const struct ft6146_config *config = dev->config; + int ret; + + if (!config->reset_gpio.port) { + return 0; + } + + if (!device_is_ready(config->reset_gpio.port)) { + LOG_ERR("Reset GPIO not ready"); + return -ENODEV; + } + + ret = gpio_pin_configure_dt(&config->reset_gpio, GPIO_OUTPUT_ACTIVE); + if (ret < 0) { + LOG_ERR("Failed to configure reset GPIO: %d", ret); + return ret; + } + + k_msleep(FT6146_RESET_DELAY_MS); + + /* De-assert reset */ + ret = gpio_pin_set_dt(&config->reset_gpio, 0); + if (ret < 0) { + LOG_ERR("Failed to de-assert reset: %d", ret); + return ret; + } + + k_msleep(FT6146_POST_RESET_DELAY_MS); + + return ret; +} + +static int ft6146_init(const struct device *dev) +{ + const struct ft6146_config *config = dev->config; + struct ft6146_data *data = dev->data; + int ret; + + if (!i2c_is_ready_dt(&config->i2c)) { + LOG_ERR("I2C bus not ready"); + return -ENODEV; + } + + data->dev = dev; + + /* Perform reset sequence */ + ret = ft6146_reset(dev); + if (ret < 0) { + return ret; + } + + /* Initialize work queue */ + k_work_init(&data->work, ft6146_work_handler); + +#ifdef CONFIG_INPUT_FT6146_INTERRUPT + if (!gpio_is_ready_dt(&config->int_gpio)) { + LOG_ERR("Interrupt GPIO controller device not ready"); + return -ENODEV; + } + + ret = gpio_pin_configure_dt(&config->int_gpio, GPIO_INPUT); + if (ret < 0) { + LOG_ERR("Failed to configure interrupt GPIO: %d", ret); + return ret; + } + + ret = gpio_pin_interrupt_configure_dt(&config->int_gpio, GPIO_INT_EDGE_TO_ACTIVE); + if (ret < 0) { + LOG_ERR("Failed to configure interrupt: %d", ret); + return ret; + } + + gpio_init_callback(&data->int_cb, ft6146_isr_handler, BIT(config->int_gpio.pin)); + ret = gpio_add_callback(config->int_gpio.port, &data->int_cb); + if (ret < 0) { + LOG_ERR("Failed to add callback: %d", ret); + return ret; + } +#else + /* Initialize polling timer */ + k_timer_init(&data->poll_timer, ft6146_poll_timer_handler, NULL); + k_timer_start(&data->poll_timer, K_MSEC(CONFIG_INPUT_FT6146_PERIOD), + K_MSEC(CONFIG_INPUT_FT6146_PERIOD)); +#endif + + return ret; +} + +#define FT6146_INIT(n) \ + static struct ft6146_data ft6146_data_##n; \ + \ + static const struct ft6146_config ft6146_config_##n = { \ + .common = INPUT_TOUCH_DT_INST_COMMON_CONFIG_INIT(n), \ + .i2c = I2C_DT_SPEC_INST_GET(n), \ + .reset_gpio = GPIO_DT_SPEC_INST_GET_OR(n, reset_gpios, {0}), \ + COND_CODE_1(CONFIG_INPUT_FT6146_INTERRUPT, \ + (.int_gpio = GPIO_DT_SPEC_INST_GET(n, int_gpios),), ()) }; \ + \ + DEVICE_DT_INST_DEFINE(n, ft6146_init, NULL, &ft6146_data_##n, &ft6146_config_##n, \ + POST_KERNEL, CONFIG_INPUT_INIT_PRIORITY, NULL); + +DT_INST_FOREACH_STATUS_OKAY(FT6146_INIT) diff --git a/dts/bindings/input/focaltech,ft6146.yaml b/dts/bindings/input/focaltech,ft6146.yaml new file mode 100644 index 0000000000000..3b88c2194ee11 --- /dev/null +++ b/dts/bindings/input/focaltech,ft6146.yaml @@ -0,0 +1,17 @@ +# Copyright (c) 2025 Qingsong Gou +# SPDX-License-Identifier: Apache-2.0 + +description: FocalTech FT6146 capacitive touch controller + +compatible: "focaltech,ft6146" + +include: [i2c-device.yaml, touchscreen-common.yaml] + +properties: + int-gpios: + type: phandle-array + description: Interrupt GPIO specification, active low + + reset-gpios: + type: phandle-array + description: Reset GPIO specification, active low diff --git a/tests/drivers/build_all/input/app.overlay b/tests/drivers/build_all/input/app.overlay index c7c343b57931f..6bce18c7448b1 100644 --- a/tests/drivers/build_all/input/app.overlay +++ b/tests/drivers/build_all/input/app.overlay @@ -39,10 +39,12 @@ compatible = "adc-keys"; io-channels = <&test_adc 0>; keyup-threshold-mv = <0>; + button_0 { press-thresholds-mv = <1500>, <1750>; zephyr,code = <0>; }; + button_1 { press-thresholds-mv = <2500>, <1750>; zephyr,code = <1>; @@ -52,6 +54,7 @@ gpio-keys { compatible = "gpio-keys"; debounce-interval-ms = <30>; + button_0 { gpios = <&test_gpio 0 0>; zephyr,code = <0>; @@ -61,6 +64,7 @@ gpio-keys-polled { compatible = "gpio-keys"; debounce-interval-ms = <30>; + button_0 { gpios = <&test_gpio 0 0>; zephyr,code = <0>; @@ -134,6 +138,7 @@ analog_axis { compatible = "analog-axis"; + axis-x { io-channels = <&test_adc 0>; out-min = <(-127)>; @@ -174,6 +179,7 @@ sbus { compatible = "futaba,sbus"; + right_stick_x { channel = <1>; type = ; @@ -196,6 +202,13 @@ int-gpios = <&test_gpio 0 0>; }; + ft6146@0 { + compatible = "focaltech,ft6146"; + reg = <0x0>; + int-gpios = <&test_gpio 0 0>; + reset-gpios = <&test_gpio 1 0>; + }; + gt911@1 { compatible = "goodix,gt911"; reg = <0x1>;