New kernel drivers and device migrations (#563)

2026-07-14 20:26:57 +02:00
parent 955416dac8
commit 8af6204ba1
215 changed files with 6359 additions and 3633 deletions
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: Apache-2.0
+#include <tactility/drivers/gpio_hog.h>
+
+#include <tactility/device.h>
+#include <tactility/driver.h>
+#include <tactility/drivers/gpio_controller.h>
+#include <tactility/error.h>
+#include <tactility/log.h>
+#include <tactility/module.h>
+
+#define TAG "GpioHog"
+#define GET_CONFIG(device) (static_cast<const GpioHogConfig*>((device)->config))
+
+namespace {
+const DeviceType GPIO_HOG_TYPE { .name = "gpio_hog" };
+}
+
+static error_t start(Device* device) {
+    const auto* config = GET_CONFIG(device);
+
+    auto* descriptor = gpio_descriptor_acquire(config->pin.gpio_controller, config->pin.pin, GPIO_OWNER_HOG);
+    if (descriptor == nullptr) {
+        LOG_E(TAG, "Failed to acquire GPIO descriptor");
+        return ERROR_RESOURCE;
+    }
+
+    bool ok;
+    switch (config->mode) {
+        case GPIO_HOG_MODE_OUTPUT_HIGH:
+            ok = gpio_descriptor_set_flags(descriptor, GPIO_FLAG_DIRECTION_OUTPUT) == ERROR_NONE &&
+                gpio_descriptor_set_level(descriptor, true) == ERROR_NONE;
+            break;
+        case GPIO_HOG_MODE_OUTPUT_LOW:
+            ok = gpio_descriptor_set_flags(descriptor, GPIO_FLAG_DIRECTION_OUTPUT) == ERROR_NONE &&
+                gpio_descriptor_set_level(descriptor, false) == ERROR_NONE;
+            break;
+        case GPIO_HOG_MODE_INPUT:
+            ok = gpio_descriptor_set_flags(descriptor, GPIO_FLAG_DIRECTION_INPUT) == ERROR_NONE;
+            break;
+        default:
+            ok = false;
+            break;
+    }
+
+    if (!ok) {
+        LOG_E(TAG, "Failed to configure hogged pin %u", config->pin.pin);
+        gpio_descriptor_release(descriptor);
+        return ERROR_RESOURCE;
+    }
+
+    device_set_driver_data(device, descriptor);
+    return ERROR_NONE;
+}
+
+static error_t stop(Device* device) {
+    auto* descriptor = static_cast<GpioDescriptor*>(device_get_driver_data(device));
+    gpio_descriptor_release(descriptor);
+    return ERROR_NONE;
+}
+
+extern Module root_module;
+
+Driver gpio_hog_driver = {
+    .name = "gpio_hog",
+    .compatible = (const char*[]) { "tactility,gpio-hog", nullptr },
+    .start_device = start,
+    .stop_device = stop,
+    .api = nullptr,
+    .device_type = &GPIO_HOG_TYPE,
+    .owner = &root_module,
+    .internal = nullptr
+};