mirror of
https://gitee.com/bianbu-linux/linux-6.6
synced 2025-06-29 23:43:21 -04:00
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
41 lines
1.1 KiB
Text
41 lines
1.1 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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menu "ARM devices"
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config DRM_HDLCD
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tristate "ARM HDLCD"
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depends on DRM && OF && (ARM || ARM64 || COMPILE_TEST)
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depends on COMMON_CLK
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select DRM_KMS_HELPER
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select DRM_GEM_DMA_HELPER
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help
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Choose this option if you have an ARM High Definition Colour LCD
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controller.
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If M is selected the module will be called hdlcd.
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config DRM_HDLCD_SHOW_UNDERRUN
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bool "Show underrun conditions"
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depends on DRM_HDLCD
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default n
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help
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Enable this option to show in red colour the pixels that the
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HDLCD device did not fetch from framebuffer due to underrun
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conditions.
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config DRM_MALI_DISPLAY
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tristate "ARM Mali Display Processor"
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depends on DRM && OF && (ARM || ARM64 || COMPILE_TEST)
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depends on COMMON_CLK
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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 want to compile the ARM Mali Display
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Processor driver. It supports the DP500, DP550 and DP650 variants
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of the hardware.
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If compiled as a module it will be called mali-dp.
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source "drivers/gpu/drm/arm/display/Kconfig"
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endmenu
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