[PATCH v2 7/9] media: docs: add doc for the stm32 dma2d driver
From: <hidden>
Date: 2021-07-15 09:25:09
Also in:
linux-clk, linux-devicetree, linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
From: Dillon Min <redacted> add stm32-uapi.rst for stm32's dma2d driver, explain the details of ioctl V4L2_CID_DMA2D_R2M_MODE, V4L2_CID_DMA2D_R2M_COLOR. Signed-off-by: Dillon Min <redacted> --- v2: introduce the stm32-uapi.rst to explain the detail of dma2d's ioctl. .../userspace-api/media/drivers/index.rst | 1 + .../userspace-api/media/drivers/stm32-uapi.rst | 22 ++++++++++++++++++++++ 2 files changed, 23 insertions(+) create mode 100644 Documentation/userspace-api/media/drivers/stm32-uapi.rst
diff --git a/Documentation/userspace-api/media/drivers/index.rst b/Documentation/userspace-api/media/drivers/index.rst
index 12e3c512d718..ce42915d48f4 100644
--- a/Documentation/userspace-api/media/drivers/index.rst
+++ b/Documentation/userspace-api/media/drivers/index.rst@@ -38,4 +38,5 @@ For more details see the file COPYING in the source distribution of Linux. max2175 meye-uapi omap3isp-uapi + stm32-uapi uvcvideo
diff --git a/Documentation/userspace-api/media/drivers/stm32-uapi.rst b/Documentation/userspace-api/media/drivers/stm32-uapi.rst
new file mode 100644
index 000000000000..d7a4f717387d
--- /dev/null
+++ b/Documentation/userspace-api/media/drivers/stm32-uapi.rst@@ -0,0 +1,22 @@ +.. SPDX-License-Identifier: GPL-2.0 + +STM32 Chrom-Art 2D Graphics Accelerator unit (DMA2D) driver +================================================ + +The DMA2D driver implements the following driver-specific controls: + +``V4L2_CID_DMA2D_R2M_MODE`` +------------------------- + Enable/Disable the Register-To-Memory mode, filling a part or the + whole of a destination image with a specific color. + + 1 for enable, 0 for disable. + +``V4L2_CID_DMA2D_R2M_COLOR`` +------------------------------- + Set the color to fill a part or the whole of a destination image. + only used under Register-To-Memory mode, to set the DMA2D_OCOLR register + (RED, GREEN, BLUE) which is: + + 31 .. 24 23 .. 16 15 .. 8 7 .. 0 + ALPHA[7:0] RED[7:0] GREEN[7:0] BLUE[7:0]
--
2.7.4
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