media: meson: Add M2M driver for the Amlogic GE2D Accelerator Unit

The GE2D is a 2D accelerator with various features like configurable
blitter with alpha blending, frame rotation, scaling, format conversion
and colorspace conversion.

The driver implements a Memory2Memory VB2 V4L2 streaming device permitting:
- 0, 90, 180, 270deg rotation
- horizontal/vertical flipping
- source cropping
- destination compositing
- 32bit/24bit/16bit format conversion

This adds the support for the GE2D version found in the AXG SoCs Family.

The missing features are:
- Source scaling
- Colorspace conversion
- Advanced alpha blending & blitting options

Is passes v4l2-compliance:
SHA: ea16a7ef13a902793a5c2626b0cefc4d956147f3, 64 bits, 64-bit time_t

[hverkuil: add missing linux/bitfield.h include]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/Kconfig

@@ -306,6 +306,19 @@ config VIDEO_MEM2MEM_DEINTERLACE
 	help
 	    Generic deinterlacing V4L2 driver.
 
+config VIDEO_MESON_GE2D
+	tristate "Amlogic 2D Graphic Acceleration Unit"
+	depends on VIDEO_DEV && VIDEO_V4L2
+	depends on ARCH_MESON || COMPILE_TEST
+	select VIDEOBUF2_DMA_CONTIG
+	select V4L2_MEM2MEM_DEV
+	help
+	  This is a v4l2 driver for Amlogic GE2D 2D graphics accelerator.
+	  GE2D is a standalone 2D graphic acceleration unit, with color converter,
+	  image scaling, BitBLT & alpha blending operations.
+
+	  To compile this driver as a module choose m here.
+
 config VIDEO_SAMSUNG_S5P_G2D
 	tristate "Samsung S5P and EXYNOS4 G2D 2d graphics accelerator driver"
 	depends on VIDEO_DEV && VIDEO_V4L2

drivers/media/platform/Makefile

@@ -81,3 +81,5 @@ obj-$(CONFIG_VIDEO_QCOM_CAMSS)		+= qcom/camss/
 obj-$(CONFIG_VIDEO_QCOM_VENUS)		+= qcom/venus/
 
 obj-y					+= sunxi/
+
+obj-$(CONFIG_VIDEO_MESON_GE2D)		+= meson/ge2d/

drivers/media/platform/meson/ge2d/Makefile

+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_VIDEO_MESON_GE2D) += ge2d.o