New kernel drivers and more (#560)

- Added kernel base drivers for: display, pointer (touch, mouse, etc.), keyboard, adc, power supply and backlight - Implement new kernel driver modules: `st7789-module` and `gt911-module` - Implement ESP32 ADC "oneshot" kernel driver - Implement ESP32 backlight kernel driver with ledc API - Implemented `battery-sense` driver that allows for voltage measurement and creates a power supply child device - Updated github actions - Updated flash scripts - Fix for esp32 legacy driver conflict with ADC - Created separate `lilygo-tdeck` and `lilygo-tdeck-plus` devices - Created `lilygo-module` with LilyGO kernel drivers - Fix for intermittent errors in build related to code generation of `devicetree.c` - `lvgl-module` can now map kernel drivers onto LVGL devices - Created `KernelDisplayApp` as a mirror of `HalDisplayApp` (formerly `DisplayApp`) - Removed `struct` and `enum` prefix in a lot of kernel driver cpp source files - `lilygo-tdeck` and `lilygo-tdeck-plus` are now fully relying on kernel drivers and don't use any of the old HAL
2026-07-12 00:29:12 +02:00
parent c4406b24ba
commit 50c0a14a93
149 changed files with 5274 additions and 1266 deletions
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <lilygo/drivers/tdeck_keyboard.h>
+
+#include <tactility/check.h>
+#include <tactility/device.h>
+#include <tactility/driver.h>
+#include <tactility/drivers/i2c_controller.h>
+#include <tactility/drivers/keyboard.h>
+#include <tactility/log.h>
+
+#include <cstdlib>
+
+#define TAG "TdeckKeyboard"
+#define GET_CONFIG(device) (static_cast<const TdeckKeyboardConfig*>((device)->config))
+
+static constexpr TickType_t I2C_TIMEOUT = pdMS_TO_TICKS(100);
+
+struct TdeckKeyboardInternal {
+    // The T-Deck keyboard controller only ever reports the currently pressed key (0x00 = none) and
+    // never a release event, so release events are synthesized by comparing against this.
+    uint8_t last_key;
+};
+
+// region Driver lifecycle
+
+static error_t start(Device* device) {
+    auto* parent = device_get_parent(device);
+    check(device_get_type(parent) == &I2C_CONTROLLER_TYPE);
+
+    auto address = GET_CONFIG(device)->address;
+    if (i2c_controller_has_device_at_address(parent, address, I2C_TIMEOUT) != ERROR_NONE) {
+        LOG_E(TAG, "No device found on I2C bus at address 0x%02X", address);
+        return ERROR_RESOURCE;
+    }
+
+    auto* internal = static_cast<TdeckKeyboardInternal*>(malloc(sizeof(TdeckKeyboardInternal)));
+    if (internal == nullptr) {
+        return ERROR_OUT_OF_MEMORY;
+    }
+    internal->last_key = 0;
+
+    device_set_driver_data(device, internal);
+    return ERROR_NONE;
+}
+
+static error_t stop(Device* device) {
+    auto* internal = static_cast<TdeckKeyboardInternal*>(device_get_driver_data(device));
+    free(internal);
+    return ERROR_NONE;
+}
+
+// endregion
+
+// region KeyboardApi
+
+static error_t tdeck_keyboard_read_key(Device* device, KeyboardKeyData* data) {
+    auto* parent = device_get_parent(device);
+    auto address = GET_CONFIG(device)->address;
+    auto* internal = static_cast<TdeckKeyboardInternal*>(device_get_driver_data(device));
+
+    uint8_t read_buffer = 0;
+    if (i2c_controller_read(parent, address, &read_buffer, 1, I2C_TIMEOUT) != ERROR_NONE) {
+        return ERROR_RESOURCE;
+    }
+
+    // This controller never buffers more than one key event.
+    data->continue_reading = false;
+
+    if (read_buffer == 0 && internal->last_key != 0) {
+        data->key = internal->last_key;
+        data->pressed = false;
+    } else if (read_buffer != 0) {
+        data->key = read_buffer;
+        data->pressed = true;
+    } else {
+        data->key = 0;
+        data->pressed = false;
+    }
+
+    internal->last_key = read_buffer;
+    return ERROR_NONE;
+}
+
+// endregion
+
+static const KeyboardApi tdeck_keyboard_api = {
+    .read_key = tdeck_keyboard_read_key,
+};
+
+extern Module lilygo_module;
+
+Driver tdeck_keyboard_driver = {
+    .name = "tdeck_keyboard",
+    .compatible = (const char*[]) { "lilygo,tdeck-keyboard", nullptr },
+    .start_device = start,
+    .stop_device = stop,
+    .api = &tdeck_keyboard_api,
+    .device_type = &KEYBOARD_TYPE,
+    .owner = &lilygo_module,
+    .internal = nullptr
+};