Trackball rewrite (#600)

- Implement generic trackball settings
- Refactor T-Deck trackball driver into generic driver at `Drivers/gpio-trackball-module`
- Automatically bind/unbind trackball devices with LVGL
- Automatically load settings for trackball devices on boot

TactilityKernel/source/drivers/trackball.cpp

@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <tactility/device.h>
+#include <tactility/drivers/trackball.h>
+#include <tactility/error.h>
+
+#define TRACKBALL_DRIVER_API(driver) ((struct TrackballApi*)driver->api)
+
+extern "C" {
+
+error_t trackball_read_delta(Device* device, int32_t* out_dx, int32_t* out_dy) {
+    const auto* driver = device_get_driver(device);
+    return TRACKBALL_DRIVER_API(driver)->read_delta(device, out_dx, out_dy);
+}
+
+error_t trackball_get_button_pressed(Device* device, bool* out_pressed) {
+    const auto* driver = device_get_driver(device);
+    return TRACKBALL_DRIVER_API(driver)->get_button_pressed(device, out_pressed);
+}
+
+const DeviceType TRACKBALL_TYPE {
+    .name = "trackball"
+};
+
+}

TactilityKernel/source/symbols.c

@@ -29,6 +29,7 @@
 #include <tactility/drivers/rtc.h>
 #include <tactility/drivers/sdcard.h>
 #include <tactility/drivers/spi_controller.h>
+#include <tactility/drivers/trackball.h>
 #include <tactility/drivers/uart_controller.h>
 #include <tactility/drivers/usb_host_hid.h>
 #include <tactility/drivers/usb_host_midi.h>
@@ -294,6 +295,10 @@ const struct ModuleSymbol KERNEL_SYMBOLS[] = {
     DEFINE_MODULE_SYMBOL(spi_controller_try_lock),
     DEFINE_MODULE_SYMBOL(spi_controller_unlock),
     DEFINE_MODULE_SYMBOL(SPI_CONTROLLER_TYPE),
+    // drivers/trackball
+    DEFINE_MODULE_SYMBOL(trackball_read_delta),
+    DEFINE_MODULE_SYMBOL(trackball_get_button_pressed),
+    DEFINE_MODULE_SYMBOL(TRACKBALL_TYPE),
     // drivers/uart_controller
     DEFINE_MODULE_SYMBOL(uart_controller_open),
     DEFINE_MODULE_SYMBOL(uart_controller_close),