Implement CL-32 Support (#610)

Drivers/esp-epaper-module/include/bindings/esp_epaper.h

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/bindings/bindings.h>
+#include <drivers/esp_epaper.h>
+
+DEFINE_DEVICETREE(esp_epaper, struct EspEpaperConfig)

Drivers/esp-epaper-module/include/drivers/esp_epaper.h

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+#include <epaper_config.h>
+#include <tactility/drivers/gpio.h>
+
+/**
+ * @brief Panel configuration for an esp_epaper-driven e-paper display.
+ *
+ * The struct field order matches the binding's property order and must stay in
+ * sync with it: the devicetree compiler emits struct initializers in binding
+ * order, not declaration order.
+ */
+struct EspEpaperConfig {
+    struct GpioPinSpec pin_dc;
+    struct GpioPinSpec pin_reset;
+    struct GpioPinSpec pin_busy;
+    struct GpioPinSpec pin_cs;
+    /** SPI clock frequency in Hz */
+    int clock_speed_hz;
+    /** Panel registry name, e.g. "ssd16xx-290" (see the binding's panel-type) */
+    const char* panel_type;
+    /** Horizontal resolution override; 0 = the panel's default */
+    uint16_t width;
+    /** Vertical resolution override; 0 = the panel's default */
+    uint16_t height;
+    /** epd_update_mode_t used for frame updates */
+    epd_update_mode_t update_mode;
+    /**
+     * Fixed display rotation, 0 = 0 degrees, 1 = 90, 2 = 180, 3 = 270 degrees
+     * counter-clockwise (LV_DISPLAY_ROTATION_*). Not changeable at runtime.
+     */
+    uint8_t rotation;
+};
+
+#ifdef __cplusplus
+}
+#endif

Drivers/esp-epaper-module/include/esp_epaper_module.h

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/module.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern struct Module esp_epaper_module;
+
+#ifdef __cplusplus
+}
+#endif