2018-05-06 21:58:06 +00:00
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# SPDX-License-Identifier: GPL-2.0+
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video: add STM32 LTDC display controller
The STM32 LTDC display controller provides a parallel digital RGB and
signals for horizontal, vertical synchronization, Pixel Clock and Data
Enable as output to interface directly to a variety of LCD and TFT panels.
The LTDC main features are:
- 24-bit RGB Parallel Pixel Output, Programmable timings & polarity for
HSync, VSync and Data Enable.
- 2 layers with Blending, Color Keying, Window position & size,
Dithering, Background color, Color Look-Up Table (CLUT).
- Supported layer color formats: ARGB8888, RGB888, RGB565, ARGB1555,
ARGB4444, L8 CLUT, AL44 & AL88
This LTDC driver:
- supports: RGB parallel output with timings & polarity, 1 layer
in RGB565.
- supports but with hard-coded configurations: blending, window
position & size (crop), background color.
- does not support yet: rgb888, argb8888, 8-bit clut, dithering.
This LTDC driver is compatible with all stm32 platforms with the
LTDC IP and has been tested on stm32 f746-disco board.
Signed-off-by: Philippe CORNU <philippe.cornu@st.com>
2017-08-03 10:36:08 +00:00
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#
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# Copyright (C) STMicroelectronics SA 2017
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#
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# Authors: Philippe Cornu <philippe.cornu@st.com>
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# Yannick Fertre <yannick.fertre@st.com>
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menuconfig VIDEO_STM32
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bool "Enable STM32 video support"
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depends on DM_VIDEO
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help
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STM32 supports many video output options including RGB and
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DSI. This option enables these supports which can be used on
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devices which have RGB TFT or DSI display connected.
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config VIDEO_STM32_MAX_XRES
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int "Maximum horizontal resolution (for memory allocation purposes)"
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depends on VIDEO_STM32
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default 640
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help
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The maximum horizontal resolution to support for the framebuffer.
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This configuration is used for reserving/allocating memory for the
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framebuffer during device-model binding/probing.
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config VIDEO_STM32_MAX_YRES
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int "Maximum vertical resolution (for memory allocation purposes)"
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depends on VIDEO_STM32
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default 480
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help
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The maximum vertical resolution to support for the framebuffer.
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This configuration is used for reserving/allocating memory for the
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framebuffer during device-model binding/probing.
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config VIDEO_STM32_MAX_BPP
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int "Maximum bits per pixel (for memory allocation purposes)"
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depends on VIDEO_STM32
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default 16
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help
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The maximum bits per pixel to support for the framebuffer.
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This configuration is used for reserving/allocating memory for the
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framebuffer during device-model binding/probing.
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