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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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4a83c26a1d
Rename "GEM CMA" helpers to "GEM DMA" helpers - considering the
hierarchy of APIs (mm/cma -> dma -> gem dma) calling them "GEM
DMA" seems to be more applicable.
Besides that, commit e57924d4ae ("drm/doc: Task to rename CMA helpers")
requests to rename the CMA helpers and implies that people seem to be
confused about the naming.
In order to do this renaming the following script was used:
```
#!/bin/bash
DIRS="drivers/gpu include/drm Documentation/gpu"
REGEX_SYM_UPPER="[0-9A-Z_\-]"
REGEX_SYM_LOWER="[0-9a-z_\-]"
REGEX_GREP_UPPER="(${REGEX_SYM_UPPER}*)(GEM)_CMA_(${REGEX_SYM_UPPER}*)"
REGEX_GREP_LOWER="(${REGEX_SYM_LOWER}*)(gem)_cma_(${REGEX_SYM_LOWER}*)"
REGEX_SED_UPPER="s/${REGEX_GREP_UPPER}/\1\2_DMA_\3/g"
REGEX_SED_LOWER="s/${REGEX_GREP_LOWER}/\1\2_dma_\3/g"
# Find all upper case 'CMA' symbols and replace them with 'DMA'.
for ff in $(grep -REHl "${REGEX_GREP_UPPER}" $DIRS)
do
sed -i -E "$REGEX_SED_UPPER" $ff
done
# Find all lower case 'cma' symbols and replace them with 'dma'.
for ff in $(grep -REHl "${REGEX_GREP_LOWER}" $DIRS)
do
sed -i -E "$REGEX_SED_LOWER" $ff
done
# Replace all occurrences of 'CMA' / 'cma' in comments and
# documentation files with 'DMA' / 'dma'.
for ff in $(grep -RiHl " cma " $DIRS)
do
sed -i -E "s/ cma / dma /g" $ff
sed -i -E "s/ CMA / DMA /g" $ff
done
# Rename all 'cma_obj's to 'dma_obj'.
for ff in $(grep -RiHl "cma_obj" $DIRS)
do
sed -i -E "s/cma_obj/dma_obj/g" $ff
done
```
Only a few more manual modifications were needed, e.g. reverting the
following modifications in some DRM Kconfig files
- select CMA if HAVE_DMA_CONTIGUOUS
+ select DMA if HAVE_DMA_CONTIGUOUS
as well as manually picking the occurrences of 'CMA'/'cma' in comments and
documentation which relate to "GEM CMA", but not "FB CMA".
Also drivers/gpu/drm/Makefile was fixed up manually after renaming
drm_gem_cma_helper.c to drm_gem_dma_helper.c.
This patch is compile-time tested building a x86_64 kernel with
`make allyesconfig && make drivers/gpu/drm`.
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> #drivers/gpu/drm/arm
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220802000405.949236-4-dakr@redhat.com
65 lines
1.7 KiB
Text
65 lines
1.7 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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config DRM_RCAR_DU
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tristate "DRM Support for R-Car Display Unit"
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depends on DRM && OF
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depends on ARM || ARM64
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depends on ARCH_RENESAS || COMPILE_TEST
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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select VIDEOMODE_HELPERS
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help
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Choose this option if you have an R-Car chipset.
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If M is selected the module will be called rcar-du-drm.
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config DRM_RCAR_USE_CMM
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bool "R-Car DU Color Management Module (CMM) Support"
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depends on DRM_RCAR_DU
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default DRM_RCAR_DU
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help
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Enable support for R-Car Color Management Module (CMM).
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config DRM_RCAR_CMM
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def_tristate DRM_RCAR_DU
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depends on DRM_RCAR_USE_CMM
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config DRM_RCAR_DW_HDMI
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tristate "R-Car Gen3 and RZ/G2 DU HDMI Encoder Support"
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depends on DRM && OF
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select DRM_DW_HDMI
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help
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Enable support for R-Car Gen3 or RZ/G2 internal HDMI encoder.
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config DRM_RCAR_USE_LVDS
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bool "R-Car DU LVDS Encoder Support"
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depends on DRM_BRIDGE && OF
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default DRM_RCAR_DU
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help
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Enable support for the R-Car Display Unit embedded LVDS encoders.
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config DRM_RCAR_LVDS
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def_tristate DRM_RCAR_DU
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depends on DRM_RCAR_USE_LVDS
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select DRM_KMS_HELPER
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select DRM_PANEL
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select OF_FLATTREE
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select OF_OVERLAY
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config DRM_RCAR_MIPI_DSI
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tristate "R-Car DU MIPI DSI Encoder Support"
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depends on DRM && DRM_BRIDGE && OF
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select DRM_MIPI_DSI
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help
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Enable support for the R-Car Display Unit embedded MIPI DSI encoders.
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config DRM_RCAR_VSP
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bool "R-Car DU VSP Compositor Support" if ARM
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default y if ARM64
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depends on DRM_RCAR_DU
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depends on VIDEO_RENESAS_VSP1=y || (VIDEO_RENESAS_VSP1 && DRM_RCAR_DU=m)
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help
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Enable support to expose the R-Car VSP Compositor as KMS planes.
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config DRM_RCAR_WRITEBACK
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bool
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default y if ARM64
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depends on DRM_RCAR_DU
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