modules: lvgl: Add support for NXP PXP engine

Adds support for the NXP PXP engine. LVGL changed
the Kconfig symbol from LV_USE_GPU_NXP_PXP to
LV_USE_PXP, but hal_nxp still relies on
LV_USE_GPU_NXP_PXP, so add a temporary symbol for it.
Additionally the drawing engines need to invalidate
ranges in the dcache, the method needs to be provided
via a lvgl_support.h file.

Signed-off-by: Fabian Blatz <[email protected]>

Author: faxe1008

modules/lvgl/Kconfig

@@ -143,6 +143,20 @@ config LV_Z_USE_OSAL
 	  Use the Zephyr LVGL OSAL to enable parallel rendering
 	  pipelines.
 
+config LV_USE_PXP
+	bool
+
+config LV_USE_GPU_NXP_PXP
+	bool
+	default y if LV_USE_PXP
+
+config LV_Z_PXP_INTERRUPT_PRIORITY
+	int "PXP interrupt priority"
+	depends on LV_USE_PXP
+	default 3
+	help
+	  Sets the interrupt priority for PXP
+
 rsource "Kconfig.memory"
 rsource "Kconfig.input"
 rsource "Kconfig.shell"

modules/lvgl/include/lvgl_support.h

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2023 Fabian Blatz <[email protected]>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_MODULES_LVGL_LVGL_SUPPORT_H_
+#define ZEPHYR_MODULES_LVGL_LVGL_SUPPORT_H_
+
+#include <zephyr/cache.h>
+
+static ALWAYS_INLINE void DEMO_CleanInvalidateCacheByAddr(void *addr, uint16_t size)
+{
+	sys_cache_data_invd_range(addr, size);
+}
+
+#endif /* ZEPHYR_MODULES_LVGL_LVGL_SUPPORT_H_ */