- 18 Jan, 2022 1 commit
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Pavel Skripkin authored
Syzbot has reported GPF in sg_alloc_append_table_from_pages(). The problem was in ubuf->pages == ZERO_PTR. ubuf->pagecount is calculated from arguments passed from user-space. If user creates udmabuf with list.size == 0 then ubuf->pagecount will be also equal to zero; it causes kmalloc_array() to return ZERO_PTR. Fix it by validating ubuf->pagecount before passing it to kmalloc_array(). Fixes: fbb0de79 ("Add udmabuf misc device") Reported-and-tested-by: syzbot+2c56b725ec547fa9cb29@syzkaller.appspotmail.com Signed-off-by:
Pavel Skripkin <paskripkin@gmail.com> Link: http://patchwork.freedesktop.org/patch/msgid/20211230142649.23022-1-paskripkin@gmail.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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- 17 Jan, 2022 9 commits
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owen authored
It will connect to the mipi dsi host and find the corresponding mipi dsi host node, but the node registered by the mipi dsi host has not been loaded yet. of_find_mipi_dsi_host_by_node() returns -EINVAL which causes the calling driver to fail. If the anx7625 driver is loaded afterwards the driver requesting the mipi dsi host will not notice this. Better approach is to return -EPROBE_DEFER in such case. Then when the anx7625 driver appears the driver requesting the mipi dsi host will be probed again. Signed-off-by:
owen <qwt9588@gmail.com> Signed-off-by:
Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220117100949.9542-1-qwt9588@gamil.comReviewed-by:
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Thomas Zimmermann authored
Move drm_dp_aux_bus.c and its header file into the DP subdirectory and update all users. No functional changes. Signed-off-by:
Thomas Zimmermann <tzimmermann@suse.de> Acked-by:
Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220114114535.29157-6-tzimmermann@suse.de
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Thomas Zimmermann authored
Move all public DisplayPort headers into dp/ and update users. No functional changes. v3: * rebased onto latest drm-tip Signed-off-by:
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Thomas Zimmermann authored
Move DisplayPort functions into a separate module to reduce the size of the KMS helpers. Select DRM_DP_HELPER for all users of the code. To avoid naming conflicts, rename drm_dp_helper.c to drm_dp.c This change can help to reduce the size of the kernel binary. Some numbers from a x86-64 test build: Before: drm_kms_helper.ko: 447480 bytes After: drm_dp_helper.ko: 216632 bytes drm_kms_helper.ko: 239424 bytes For early-boot graphics, generic DRM drivers, such as simpledrm, require DRM KMS helpers to be built into the kernel. Generic helper functions for DisplayPort take up a significant portion of DRM KMS helper library. These functions are not used by generic drivers and can be loaded as a module. v3: * fix include statement in DRM selftests v2: * move DP helper code into dp/ (Jani) Signed-off-by:
Lyude Paul <lyude@redhat.com> Acked-by:
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Thomas Zimmermann authored
Split the DP declarations from other helpers before moving the DP functions into a separate module. v2: * forward-declare struct drm_dp_aux (Jani) * add include guards in drm_dp_helper_internal.h Signed-off-by:
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Thomas Zimmermann authored
Fix coding style. Signed-off-by:
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Neil Armstrong authored
This adds support for DRM_BRIDGE_ATTACH_NO_CONNECTOR by adding the bridge get_edid() and detect() callbacks after refactoring the connector get_modes() and connector_detect() callbacks. In order to keep the bridge working, extra code in get_modes() has been moved to more logical places. Signed-off-by:
Neil Armstrong <narmstrong@baylibre.com> Signed-off-by:
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Alexey Sheplyakov authored
On a dual core group GPUs (such as T628) fragment shading can be performed over all cores (because a fragment shader job doesn't need coherency between threads), however vertex shading requires to be run on the same core group as the tiler (which always lives in core group 0). As a first step to support T628 power on only the first core group (so no jobs are scheduled on the second one). This makes T628 look like every other Midgard GPU (and throws away up to half the cores). With this patch panfrost is able to drive T628 (r1p0) GPU on some armv8 SoCs (in particular BE-M1000). Without the patch rendering is horribly broken (desktop is completely unusable) and eventually the GPU locks up (it takes from a few seconds to a couple of minutes). Using the second core group requires support in Mesa (and an UABI change): the userspace should 1) set PANFROST_JD_DOESNT_NEED_COHERENCY_ON_GPU flag to opt-in to allowing the job to run across all cores. 2) set PANFROST_RUN_ON_SECOND_CORE_GROUP flag to allow compute jobs to be run on the second core group (at the moment Mesa does not advertise compute support on anything older than Mali T760) But there's little point adding such flags until someone (myself) steps up to do the Mesa work. Signed-off-by:
Alexey Sheplyakov <asheplyakov@basealt.ru> Signed-off-by:
Vadim V. Vlasov <vadim.vlasov@elpitech.ru> Tested-by:
Steven Price <steven.price@arm.com> Signed-off-by:
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Julian Braha authored
When DRM_CHIPONE_ICN6211 is selected, and DRM_KMS_HELPER is not selected, Kbuild gives the following warning: WARNING: unmet direct dependencies detected for DRM_PANEL_BRIDGE Depends on [n]: HAS_IOMEM [=y] && DRM_BRIDGE [=y] && DRM_KMS_HELPER [=n] Selected by [y]: - DRM_CHIPONE_ICN6211 [=y] && HAS_IOMEM [=y] && DRM [=y] && DRM_BRIDGE [=y] && OF [=y] This is because DRM_CHIPONE_ICN6211 selects DRM_PANEL_BRIDGE without depending on or selecting DRM_KMS_HELPER, despite DRM_PANEL_BRIDGE depending on DRM_KMS_HELPER. This unmet dependency bug was detected by Kismet, a static analysis tool for Kconfig. Fixes: ce517f18 ("drm: bridge: Add Chipone ICN6211 MIPI-DSI to RGB bridge") Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
Julian Braha <julianbraha@gmail.com> Signed-off-by:
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- 14 Jan, 2022 12 commits
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Colin Ian King authored
Pointer bufs is being initialized with a value that is never read, it is being re-assigned with a different value later on. The assignment is redundant and can be removed. Cleans up clang-scan warning: drivers/video/fbdev/s3c-fb.c:492:16: warning: Value stored to 'buf' during its initialization is never read [deadcode.DeadStores] void __iomem *buf = regs; Signed-off-by:Colin Ian King <colin.i.king@gmail.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20211230160626.404072-1-colin.i.king@gmail.com
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Colin Ian King authored
Variable Ftarget is being initialized with a value that is never read, it is being re-assigned a different value a little later on. The assignment is redundant and can be removed. Signed-off-by:
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Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/via-agp.c: In function 'via_configure_agp3': drivers/char/agp/via-agp.c:131:35: warning: variable 'current_size' set but not used [-Wunused-but-set-variable] 131 | struct aper_size_info_16 *current_size; by removing the variable. Signed-off-by:Helge Deller <deller@gmx.de> Link: https://patchwork.freedesktop.org/patch/msgid/20211201114645.15384-8-tzimmermann@suse.de
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Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/sworks-agp.c: In function 'serverworks_configure': drivers/char/agp/sworks-agp.c:265:37: warning: variable 'current_size' set but not used [-Wunused-but-set-variable] 265 | struct aper_size_info_lvl2 *current_size; by removing the variable. Signed-off-by: -
Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/nvidia-agp.c: In function 'nvidia_tlbflush': drivers/char/agp/nvidia-agp.c:264:22: warning: variable 'temp' set but not used [-Wunused-but-set-variable] 264 | u32 wbc_reg, temp; by marking the temp variable with __maybe_unused. The affected readl() is only required for flushing caches, but the returned value is not of interest. v2: * declare temp as __maybe_unused (Helge) Signed-off-by: -
Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/ati-agp.c: In function 'ati_create_page_map': drivers/char/agp/ati-agp.c:58:16: warning: variable 'err' set but not used [-Wunused-but-set-variable] 58 | int i, err = 0; by returing the error to the caller. v2: * free page in error branch (Helge) Signed-off-by: -
Thomas Zimmermann authored
Fix compiler warnings drivers/char/agp/backend.c:68: warning: Function parameter or member 'pdev' not described in 'agp_backend_acquire' drivers/char/agp/backend.c:93: warning: Function parameter or member 'bridge' not described in 'agp_backend_release' by adding the necessary documentation. Signed-off-by:
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Thomas Zimmermann authored
Fix compiler warnings like drivers/char/agp/frontend.c:46:20: warning: no previous prototype for 'agp_find_mem_by_key' [-Wmissing-prototypes] 46 | struct agp_memory *agp_find_mem_by_key(int key) by including the compat_ioctl.h in the source file. Signed-off-by: -
Thomas Zimmermann authored
Trivial coding-style fix. Signed-off-by:
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Colin Ian King authored
The variable 'size' is being assigned a value that is never read, the assignment is redundant and can be removed. Cleans up clang-scan warning: drivers/gpu/drm/vc4/vc4_bo.c:358:2: warning: Value stored to 'size' is never read [deadcode.DeadStores] size = roundup(size, PAGE_SIZE); Signed-off-by:Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20220112232036.1182846-1-colin.i.king@gmail.com
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Drew Davenport authored
ctx->next_bridge is checked for NULL twice in a row. The second conditional is redundant, so remove it. Signed-off-by:
Drew Davenport <ddavenport@chromium.org> Acked-by:
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Guchun Chen authored
Otherwise, braces are needed when using it. Signed-off-by:
Guchun Chen <guchun.chen@amd.com> Acked-by:
Christian König <christian.koenig@amd.com> Acked-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220114083742.6219-1-guchun.chen@amd.comSigned-off-by:
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- 13 Jan, 2022 9 commits
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Jagan Teki authored
Replace atomic version of the enable/disable operations to continue the transition to the atomic API. Also added default drm atomic operations for duplicate, destroy and reset state API's in order to have smooth transition on atomic API's. Tested on Engicam i.Core STM32MP1 SoM. Signed-off-by:
Jagan Teki <jagan@amarulasolutions.com> Signed-off-by:
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José Expósito authored
The "drm_plane_funcs.format_mod_supported" can be removed in favor of the default implementation. Signed-off-by:
José Expósito <jose.exposito89@gmail.com> Reviewed-by:
Yannick Fertre <yannick.fertre@foss.st.com> Tested-by:
Philippe Cornu <philippe.cornu@foss.st.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211222090552.25972-7-jose.exposito89@gmail.com
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Yannick Fertre authored
This patch adds the following YCbCr input pixel formats on the latest LTDC hardware version: 1 plane (co-planar) : YUYV, YVYU, UYVY, VYUY 2 planes (semi-planar): NV12, NV21 3 planes (full-planar): YU12=I420=DRM YUV420, YV12=DRM YVU420 Signed-off-by:
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Yannick Fertre authored
This feature allows the generation of any RGB pixel format. The list of supported formats is no longer linked to the register LXPFCR_PF, that the reason why a list of drm formats is defined for each display controller version. Signed-off-by:
Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com> Tested-by:
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Yannick Fertre authored
Recent ltdc hardware versions offer the ability to update a plane independently of others planes. This is could be useful especially if a plane is assigned to another OS. Signed-off-by:
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Yannick Fertre authored
LTDC 40100 hw version supports the YCbCr 422 output, reducing the output pins from 24 to 16. This feature is useful for some external devices like HDMI bridges. Both ITU-R BT.601 & ITU-R BT.709 are supported. It is also possible to choose the chrominance order between * Cb is output first (Y0Cb, then Y1Cr, Y2Cb and so on). * Cr is output first (Y0Cr, then Y1Cb, Y2Cr and so on). Signed-off-by:
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Yannick Fertre authored
Replace the legacy register access by regmap API. Signed-off-by:
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Alyssa Rosenzweig authored
Now that we only list features of interest to kernel space, lots of GPUs have the same feature bits. To cut down on the repetition in the file, merge feature lists that are identical between similar GPUs. Note that this leaves some unmerged identical Bifrost feature lists, as there are more features affecting Bifrost kernel space that we do not yet handle. Signed-off-by:
Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> [Steve: fix typo in commit message] Reviewed-by:
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Alyssa Rosenzweig authored
Early versions of the legacy kernel driver included comprehensive feature lists for every GPU, even though most of the enumerated features only matter to userspace. For example, HW_FEATURE_INTERPIPE_REG_ALIASING was a feature bit indicating that a GPU had "interpipe register aliasing": arithmetic, load/store, and texture instruction all use common general-purpose registers. GPUs without this feature bit have dedicated load/store and texture "registers". Whether a GPU has this feature or not is irrelevant to the kernel; it only matters in the userspace compiler's register allocator. It's silly to enumerate it in kernel space, and the information is understandably unused. To underscore the point, this feature only makes sense in the context of the Midgard instruction set. Bifrost never had dedicated load/store or texture registers, so the feature bit was vacuously set for all Bifrost hardware, even though this conveys no useful information. To clean up the feature list, delete feature bits which could not possibly matter to the kernel, leaving only those which do affect the register-level operation of the chip. Signed-off-by:
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- 12 Jan, 2022 7 commits
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Jiasheng Jiang authored
Because of the possible failure of the dma_supported(), the dma_set_mask_and_coherent() may return error num. Therefore, it should be better to check it and return the error if fails. Fixes: f3ba9122 ("drm/panfrost: Add initial panfrost driver") Signed-off-by:
Jiasheng Jiang <jiasheng@iscas.ac.cn> [Steve: fix Fixes: line] Reviewed-by:
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Javier Martinez Canillas authored
The vga16fb framebuffer driver supports both Enhanced Graphics Adapter (EGA) and Video Graphics Array (VGA) 16 color graphic cards. But the logic to check whether the EGA or VGA standard are used is not correct. It just checks if screen_info.orig_video_isVGA is set, but it should check if is set to VIDEO_TYPE_VGAC instead. This means that it assumes to be VGA even if is set to VIDEO_TYPE_EGAC. All non-x86 architectures though treat orig_video_isVGA as a boolean so only do the change for x86 and keep the old logic for the other arches. Signed-off-by:
Javier Martinez Canillas <javierm@redhat.com> Tested-by:
Kris Karas <bugs-a21@moonlit-rail.com> Acked-by:
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Jagan Teki authored
panel_bridge pointer never used anywhere except the one it looked up at nwl_dsi_bridge_attach. Drop it from the nwl_dsi structure. Reviewed-by:
Guido Günther <agx@sigxcpu.org> Signed-off-by:
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Colin Ian King authored
Don't populate the read-only array clock_div_by_lanes on the stack but instead it static const. Also makes the object code a little smaller. Signed-off-by:
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Jagan Teki authored
This reverts commit 92e794fa. It is merged by accident, the actual patch series on this bridge conversion is still under review. Revert this as it breaks the exynos DSI. Signed-off-by:
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Thomas Zimmermann authored
Set the source-buffer address after mapping the buffer into the kernel's address space. Makes MIPI DBI helpers work again. Signed-off-by:
Noralf Trønnes <noralf@tronnes.org> Reported-by:
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Minghao Chi authored
Return value directly instead of taking this in another redundant variable. Reported-by:
Zeal Robot <zealci@zte.com.cn> Signed-off-by:
Minghao Chi <chi.minghao@zte.com.cn> Signed-off-by:
CGEL ZTE <cgel.zte@gmail.com> Signed-off-by:
Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220112082524.667552-1-chi.minghao@zte.com.cn
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- 11 Jan, 2022 2 commits
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Daniel Vetter authored
Otherwise it's really hard to link to that, which I realized when I wanted to link to the property definitions for a question on irc. Fix it. Reviewed-by:
Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220111202714.1128406-1-daniel.vetter@ffwll.ch
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Jiasheng Jiang authored
Because of the possible failure of the dma_supported(), the dma_set_mask_and_coherent() may return error num. Therefore, it should be better to check it and return the error if fails. Also, we can create a variable for the mask to solve the alignment issue. Fixes: 334dd38a ("drm/v3d: Set dma_mask as well as coherent_dma_mask") Signed-off-by:
Melissa Wen <mwen@igalia.com> Signed-off-by:
Melissa Wen <melissa.srw@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220110013807.4105270-1-jiasheng@iscas.ac.cn
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