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Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 3029 file(s).
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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This adds a .fb_create helper that sets the .dirty callback to
drm_atomic_helper_dirtyfb().
v2: Improve docs (Daniel)
Signed-off-by: Noralf Trønnes <[email protected]>
Acked-by: Daniel Vetter <[email protected]>
Reviewed-by: Sam Ravnborg <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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For some pixel formats .cpp structure in drm_format info it's not
enough to describe the peculiarities of the pixel layout, for example
tiled formats or packed formats at bit level.
What's implemented here is to add three new members to drm_format_info
that could describe such formats:
- char_per_block[3]
- block_w[3]
- block_h[3]
char_per_block will be put in a union alongside cpp, for transparent
compatibility with the existing format descriptions.
Regarding, block_w and block_h they are intended to be used through
their equivalent getters drm_format_info_block_width /
drm_format_info_block_height, the reason of the getters is to abstract
the fact that for normal formats block_w and block_h will be unset/0,
but the methods will be returning 1.
Additionally, convenience function drm_format_info_min_pitch had been
added that computes the minimum required pitch for a given pixel
format and buffer width.
Using that the following drm core functions had been updated to
generically handle both block and non-block formats:
- drm_fb_cma_get_gem_addr: for block formats it will just return the
beginning of the block.
- framebuffer_check: Use the newly added drm_format_info_min_pitch.
- drm_gem_fb_create_with_funcs: Use the newly added
drm_format_info_min_pitch.
- In places where is not expecting to handle block formats, like fbdev
helpers I just added some warnings in case the block width/height
are greater than 1.
Changes since v3:
- Add helper function for computing the minimum required pitch.
- Improve/cleanup documentation
Changes since v8:
- Fixed build on 32bits arm architectures, with:
- return DIV_ROUND_UP((u64)buffer_width * info->char_per_block[plane],
+ return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane],
Reviewed-by: Brian Starkey <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Alexandru Gheorghe <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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Creating framebuffers for fbdev emulation should use the correct format
code too, so switch drm_gem_fbdev_fb_create() over to use the new
drm_driver_legacy_fb_format() function.
Signed-off-by: Gerd Hoffmann <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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This leaves all the commit/check and state handling in drm_atomic.c,
while pulling all the uapi glue and the huge ioctl itself into a
seprate file.
This seems to almost perfectly split the rather big drm_atomic.c file
into 2 equal sizes.
Also adjust the kerneldoc and type a very terse overview text.
v2: Rebase.
v3: Fix tiny typo.
v4:
- Fixup armada, newly converted atomic driver hooray!
- Fixup msm/dpu1, newly added too.
Signed-off-by: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Joonas Lahtinen <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: Rob Clark <[email protected]>
Cc: Eric Anholt <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Acked-by: Rodrigo Vivi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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I've done a lot of history digging. The first signs of this
optimization was introduced in i915:
commit 25067bfc060d1a481584dcb51ef4b5680176ecb6
Author: Gustavo Padovan <[email protected]>
Date: Wed Sep 10 12:03:17 2014 -0300
drm/i915: pin sprite fb only if it changed
without much justification. Pinning already pinned stuff is real cheap
(it's just obj->pin_count++ really), and the missing implicit sync was
entirely forgotten about it seems. It's at least not mentioned
anywhere it the commit message.
It was also promptly removed shortly afterwards in
commit ea2c67bb4affa84080c616920f3899f123786e56
Author: Matt Roper <[email protected]>
Date: Tue Dec 23 10:41:52 2014 -0800
drm/i915: Move to atomic plane helpers (v9)
again without really mentioning the side-effect that plane updates
with the same fb now again obey implicit syncing.
Note that this only ever applied to the plane_update hook, all other
legacy entry points (set_base, page_flip) always obeyed implicit sync
in the drm/i915 driver.
The real source of this code here seems to be msm, copied to vc4, then
copied to tinydrm. I've also tried to dig around in all available msm
sources, but the corresponding check for fb != old_fb is present ever
since the initial merge in
commit cf3a7e4ce08e6876cdcb80390876647f28a7cf8f
Author: Rob Clark <[email protected]>
Date: Sat Nov 8 13:21:06 2014 -0500
drm/msm: atomic core bits
The only older version I've found of msm atomic code predates the
atomic helpers, and so didn't even use any of this. It also does not
have a corresponding check (because it simply did no implicit sync at
all).
I've chatted with Rob on irc, and he didn't remember the reason for
this either.
Note we had epic amounts of fun with too much syncing against
_vblank_, especially around cursor updates. But I don't ever
discussing a need for less syncing against implicit fences.
Also note that explicit fencing allows you to sidetrack all of this,
at least for all the drivers correctly implemented using
drm_atomic_set_fence_for_plane().
Given that it seems to be an accident of history, and that big drivers
like i915 (and also nouveau it seems, I didn't follow the
amdgpu/radeon sync code to figure this out properly there) never have
done it, let's remove this.
Cc: Rob Clark <[email protected]>
Cc: Matt Roper <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: David Airlie <[email protected]>
Cc: "Noralf Trønnes" <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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There's nothing tinydrm specific to this, and there's a few more
copies of the same in various other drivers.
Signed-off-by: Daniel Vetter <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Maarten Lankhorst <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Lechner <[email protected]>
Cc: "Noralf Trønnes" <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Shawn Guo <[email protected]>
Cc: Neil Armstrong <[email protected]>
Cc: Daniel Stone <[email protected]>
Cc: Haneen Mohammed <[email protected]>
Cc: Ben Widawsky <[email protected]>
Cc: "Ville Syrjälä" <[email protected]>
Reviewed-by: Oleksandr Andrushchenko <[email protected]>
Acked-by: David Lechner <[email protected]>
Reviewed-by: Noralf Trønnes <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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Make the drm_framebuffer_funcs argument optional for drivers that
don't need to set the dirty callback.
Signed-off-by: Noralf Trønnes <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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Make the docs read a little better.
Cc: Laurent Pinchart <[email protected]>
Cc: Daniel Vetter <[email protected]>
Signed-off-by: Noralf Trønnes <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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GEM lookup failure can easily be triggered by userspace so make
it a debug message, not an error message.
Also remove unnecessary inner parentheses and fix alphabetical
struct declaration order.
Cc: Laurent Pinchart <[email protected]>
Signed-off-by: Noralf Trønnes <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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This library provides helpers for drivers that don't subclass
drm_framebuffer and are backed by drm_gem_object. The code is
taken from drm_fb_cma_helper.
Signed-off-by: Noralf Trønnes <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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