kernel/linux.git/Documentation/gpu, branch v6.1.168

drm/vmwgfx: Remove vmwgfx_hashtab

2023-01-18T10:58:28+00:00

[ Upstream commit 9da30cdd6a318595199319708c143ae318f804ef ] The vmwgfx driver has migrated from using the hashtable in vmwgfx_hashtab to the linux/hashtable implementation. Remove the vmwgfx_hashtab from the driver. Signed-off-by: Maaz Mombasawala Reviewed-by: Martin Krastev Reviewed-by: Zack Rusin Signed-off-by: Zack Rusin Link: https://patchwork.freedesktop.org/patch/msgid/20221022040236.616490-12-zack@kde.org Stable-dep-of: a309c7194e8a ("drm/vmwgfx: Remove rcu locks from user resources") Signed-off-by: Sasha Levin

Merge tag 'backlight-detect-refactor-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 into drm-misc-next

2022-09-14T11:27:10+00:00

Immutable backlight-detect-refactor branch between acpi, drm-* and pdx86 Tag (immutable branch) with v6.0-rc1 + the (acpi/x86) backlight detect refactor work. For merging into the acpi, drm-* and pdx86 subsystems. Signed-off-by: Maxime Ripard # -----BEGIN PGP SIGNATURE----- # # iQFIBAABCAAyFiEEuvA7XScYQRpenhd+kuxHeUQDJ9wFAmMVsogUHGhkZWdvZWRl # QHJlZGhhdC5jb20ACgkQkuxHeUQDJ9yy6wgAlig+7hkq940L62lTpj0g2gNQv8zc # HCsMpnU7dnJcZYaEvIjouZhf33ZbN52c0fQq2JWjt7fFX04LLyIiyrJ26Lc293JR # ++yXpJcVoewRGqApy/P3Z05TKUCLll5bexvK4t8isnhOtEXD/nDPWKTLIV2Kd1DK # nLY4KgRznXZ85RhYheUEdidZ7Lwlzt1JVBMq7tpnzu3nVdDExyZmqlqCUITcLynu # ysuASQGr0D2i+1vb9eifHIA3xsQO0S37Bv62aBMBKxB6B8Fz1DYr8VA2YvoT82Hv # IFT0hzCCZ/63Ljga05O78TwraxAQX0RvZWqjqGgnZg6fIBh2hxUiqeQY6g== # =SA1R # -----END PGP SIGNATURE----- # gpg: Signature made Mon 05 Sep 2022 09:25:44 AM IST # gpg: using RSA key BAF03B5D2718411A5E9E177E92EC4779440327DC # gpg: issuer "hdegoede@redhat.com" # gpg: Can't check signature: No public key From: Hans de Goede Link: https://patchwork.freedesktop.org/patch/msgid/261afe3d-7790-e945-adf6-a2c96c9b1eff@redhat.com

Merge tag 'amd-drm-next-6.1-2022-09-08' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

2022-09-12T09:17:41+00:00

amd-drm-next-6.1-2022-09-08: amdgpu: - Mode2 reset for RDNA2 - Lots of new DC documentation - Add documentation about different asic families - DSC improvements - Aldebaran fixes - Misc spelling and grammar fixes - GFXOFF stats support for vangogh - DC frame size fixes - NBIO 7.7 updates - DCN 3.2 updates - DCN 3.1.4 Updates - SMU 13.x updates - Misc bug fixes - Rework DC register offset handling - GC 11.x updates - PSP 13.x updates - SDMA 6.x updates - GMC 11.x updates - SR-IOV updates - PSP fixes for TA unloading - DSC passthrough support - Misc code cleanups amdkfd: - ISA fixes for some GC 10.3 IPs - Misc code cleanups radeon: - Delayed work flush fix - Use time_after for some jiffies calculations drm: - DSC passthrough aux support Signed-off-by: Dave Airlie From: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20220908155202.57862-1-alexander.deucher@amd.com

drm: vkms: Supports to the case where primary plane doesn't match the CRTC

2022-09-05T21:18:42+00:00

We will remove the current assumption that the primary plane has the same size and position as CRTC and that the primary plane is the bottom-most in zpos order, or is even enabled. At least as far as the blending machinery is concerned. For that we will add CRTC dimension information to `vkms_crtc_state` and add a opaque black backgound color. Because now we need to fill the background, we had a loss in performance with this change. Results running the IGT[1] test `igt@kms_cursor_crc@pipe-a-cursor-512x512-onscreen` ten times: | Frametime | |:--------------------------------------------:| | Implementation | Previous | This commit | |:---------------:|:---------:|:--------------:| | frametime range | 5~18 ms | 10~22 ms | | Average | 8.47 ms | 12.32 ms | [1] IGT commit id: bc3f6833a12221a46659535dac06ebb312490eb4 V6: Improve the commit description (Pekka Paalanen). Update some comments (Pekka Paalanen). Remove some fields from `vkms_crtc_state` and move where some variables are set (Pekka Paalanen). Reviewed-by: Melissa Wen Signed-off-by: Igor Torrente Signed-off-by: Melissa Wen Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-8-igormtorrente@gmail.com

drm: vkms: Refactor the plane composer to accept new formats

2022-09-05T21:18:35+00:00

Currently the blend function only accepts XRGB_8888 and ARGB_8888 as a color input. This patch refactors all the functions related to the plane composition to overcome this limitation. The pixels blend is done using the new internal format. And new handlers are being added to convert a specific format to/from this internal format. So the blend operation depends on these handlers to convert to this common format. The blended result, if necessary, is converted to the writeback buffer format. This patch introduces three major differences to the blend function. 1 - All the planes are blended at once. 2 - The blend calculus is done as per line instead of per pixel. 3 - It is responsible to calculates the CRC and writing the writeback buffer(if necessary). These changes allow us to allocate way less memory in the intermediate buffer to compute these operations. Because now we don't need to have the entire intermediate image lines at once, just one line is enough. | Memory consumption (output dimensions) | |:--------------------------------------:| | Current | This patch | |:------------------:|:-----------------:| | Width * Heigth | 2 * Width | Beyond memory, we also have a minor performance benefit from all these changes. Results running the IGT[1] test `igt@kms_cursor_crc@pipe-a-cursor-512x512-onscreen` ten times: | Frametime | |:------------------------------------------:| | Implementation | Current | This commit | |:---------------:|:---------:|:------------:| | frametime range | 9~22 ms | 5~17 ms | | Average | 11.4 ms | 7.8 ms | [1] IGT commit id: bc3f6833a12221a46659535dac06ebb312490eb4 V2: Improves the performance drastically, by performing the operations per-line and not per-pixel(Pekka Paalanen). Minor improvements(Pekka Paalanen). V3: Changes the code to blend the planes all at once. This improves performance, memory consumption, and removes much of the weirdness of the V2(Pekka Paalanen and me). Minor improvements(Pekka Paalanen and me). V4: Rebase the code and adapt it to the new NUM_OVERLAY_PLANES constant. V5: Minor checkpatch fixes and the removal of TO-DO item(Melissa Wen). Several security/robustness improvents(Pekka Paalanen). Removes check_planes_x_bounds function and allows partial partly off-screen(Pekka Paalanen). V6: Fix a mismatch of some variable sizes (Pekka Paalanen). Several minor improvements (Pekka Paalanen). Reviewed-by: Melissa Wen Reported-by: kernel test robot Signed-off-by: Igor Torrente Signed-off-by: Melissa Wen Link: https://patchwork.freedesktop.org/patch/msgid/20220905190811.25024-7-igormtorrente@gmail.com

drm/todo: Add entry about dealing with brightness control on devices with > 1 panel

2022-09-03T10:17:27+00:00

Add an entry summarizing the discussion about dealing with brightness control on devices with more then 1 internal panel. The original discussion can be found here: https://lore.kernel.org/dri-devel/20220517152331.16217-1-hdegoede@redhat.com/ Reviewed-by: Lyude Paul Signed-off-by: Hans de Goede

Documentation/gpu: Add Multiplane Overlay doc

2022-09-01T19:09:46+00:00

Multiple plane overlay is a feature supported by AMD hardware, but it has specific details that deserve proper documentation. This commit introduces a documentation that describes some of the features, limitations, and use cases for this feature. Part of this documentation came from some discussion in the public upstream [1][2]. [1]. https://lore.kernel.org/amd-gfx/3qY-QeukF_Q_MJeIXAuBjO4szbS4jRtqkTifXnbnN3bp88SxVodFQRpah3mIIVJq24DUkF6g0rOGdCmSqTvVxx9LCGEItmzLw8uWU44jtXE=@emersion.fr/ [2]. https://lore.kernel.org/amd-gfx/864e45d0-c14b-3b12-0f5b-9d26a9cb41bd@amd.com/ Cc: Harry Wentland Cc: Nicholas Kazlauskas Cc: Bhawanpreet Lakha Cc: Hersen Wu Cc: Alex Hung Cc: Pierre-Eric Pelloux-Prayer Cc: Simon Ser Cc: Pekka Paalanen Cc: Sean Paul Cc: Mark Yacoub Cc: Leo Li Cc: Pierre-Loup Cc: Michel Dänzer Reviewed-by: Harry Wentland Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

Documentation/gpu: Add an explanation about the DCN pipeline

2022-09-01T19:09:39+00:00

In the DCN code, we constantly talk about hardware pipeline, pipeline, or even just pipes, which is a concept that is not obvious to everyone. For this reason, this commit expands the DCN overview explanation by adding a new section that describes what a pipeline is from the DCN perspective. Changes since V1: - Rewrite the first paragraph that describes AMD hardware pipeline. Cc: Harry Wentland Cc: Nicholas Kazlauskas Cc: Bhawanpreet Lakha Cc: Hersen Wu Cc: Alex Hung Cc: Pierre-Eric Pelloux-Prayer Cc: Leo Li Cc: Simon Ser Cc: Pekka Paalanen Cc: Sean Paul Cc: Mark Yacoub Cc: Pierre-Loup Cc: Michel Dänzer Reviewed-by: Harry Wentland Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

Documentation/gpu: Add info table for ASICs

2022-09-01T19:09:31+00:00

Amdgpu driver is used in an extensive range of devices, and each ASIC has some specific configuration. As a result of this variety, sometimes it is hard to identify the correct block that might cause the issue. This commit expands the amdgpu kernel-doc to alleviate this issue by introducing one ASIC table that describes dGPU and another one that shares the APU info. Cc: Harry Wentland Cc: Nicholas Kazlauskas Cc: Bhawanpreet Lakha Cc: Hersen Wu Cc: Alex Hung Cc: Pierre-Eric Pelloux-Prayer Cc: Leo Li Cc: Simon Ser Cc: Pekka Paalanen Cc: Sean Paul Cc: Mark Yacoub Cc: Pierre-Loup Cc: Michel Dänzer Cc: Kent Russell Reviewed-by: Harry Wentland Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

Documentation/gpu: Document GFXOFF's count and residency

2022-08-16T22:17:32+00:00

Add documentation explaining those two new files. While here, add a note about the value type. Signed-off-by: André Almeida Signed-off-by: Alex Deucher