Now there are no users of the return value of the drm_panel_prepare(),
drm_panel_unprepare(), drm_panel_enable() and drm_panel_disable() calls.
Usually these calls are performed from the atomic callbacks, where it is
impossible to return an error. Stop returning error codes and return
void instead.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250401-panel-return-void-v1-7-93e1be33dc8d@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Add two new functions: one to find &analogix_dp_device.plat_data via
&drm_dp_aux, and the other to get &analogix_dp_device.aux. Both of them
serve for the function of getting panel from DP AUX bus, which is why
they are included in a single commit.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-6-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
HDMI standard defines recommended N and CTS values for Audio Clock
Regeneration. Currently each driver implements those, frequently in
somewhat unique way. Provide a generic helper for getting those values
to be used by the HDMI drivers.
The helper is added to drm_hdmi_helper.c rather than drm_hdmi_audio.c
since HDMI drivers can be using this helper function even without
switching to DRM HDMI Audio helpers.
Note: currently this only handles the values per HDMI 1.4b Section 7.2
and HDMI 2.0 Section 9.2.1. Later the table can be expanded to
accommodate for Deep Color TMDS char rates per HDMI 1.4 Appendix D
and/or HDMI 2.0 / 2.1 Appendix C).
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250408-drm-hdmi-acr-v2-1-dee7298ab1af@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
- Update GVT MAINTAINERS (Jani)
Driver Changes:
- Updates for xe3lpd display (Gustavo)
- Fix link training interrupted by HPD pulse (Imre)
- Watermark bound checks for DSC (Ankit)
- VRR Refactor and other fixes and improvements (Ankit)
- More conversions towards intel_display struct (Gustavo, Jani)
- Other clean-up patches towards a display separation (Jani)
- Maintain asciibetical order for HAS_* macros (Ankit)
- Fixes around probe/initialization (Janusz)
- Fix build and doc build issue (Yue, Rodrigo)
- DSI related fixes (Suraj, William, Jani)
- Improve DC6 entry counter (Mohammed)
- Fix xe2hpd memory type identification (Vivek)
- PSR related fixes and improvements (Animesh, Jouni)
- DP MST related fixes and improvements (Imre)
- Fix scanline_offset for LNL+/BMG+ (Ville)
- Some gvt related fixes and changes (Ville, Jani)
- Some PLL code adjustment (Ville)
- Display wa addition (Vinod)
- DRAM type logging (Lucas)
- Pimp the initial FB readout (Ville)
- Some sagv/bw cleanup (Ville)
- Remove i915_display_capabilities debugfs entry (Jani)
- Move PCH type to display caps debugfs entry (Jani)
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Merge tag 'drm-intel-next-2025-04-11' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next
Cross-subsystem Changes:
- Update GVT MAINTAINERS (Jani)
Driver Changes:
- Updates for xe3lpd display (Gustavo)
- Fix link training interrupted by HPD pulse (Imre)
- Watermark bound checks for DSC (Ankit)
- VRR Refactor and other fixes and improvements (Ankit)
- More conversions towards intel_display struct (Gustavo, Jani)
- Other clean-up patches towards a display separation (Jani)
- Maintain asciibetical order for HAS_* macros (Ankit)
- Fixes around probe/initialization (Janusz)
- Fix build and doc build issue (Yue, Rodrigo)
- DSI related fixes (Suraj, William, Jani)
- Improve DC6 entry counter (Mohammed)
- Fix xe2hpd memory type identification (Vivek)
- PSR related fixes and improvements (Animesh, Jouni)
- DP MST related fixes and improvements (Imre)
- Fix scanline_offset for LNL+/BMG+ (Ville)
- Some gvt related fixes and changes (Ville, Jani)
- Some PLL code adjustment (Ville)
- Display wa addition (Vinod)
- DRAM type logging (Lucas)
- Pimp the initial FB readout (Ville)
- Some sagv/bw cleanup (Ville)
- Remove i915_display_capabilities debugfs entry (Jani)
- Move PCH type to display caps debugfs entry (Jani)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/Z_kTqPX5Mjruq1pL@intel.com
drm-misc-next for v6.16-rc1:
UAPI Changes:
- Add ASAHI uapi header!
- Add apple fourcc modifiers.
- Add capset virtio definitions to UAPI.
- Extend EXPORT_SYNC_FILE for timeline syncobjs.
Cross-subsystem Changes:
- Adjust DMA-BUF sg handling to not cache map on attach.
- Update drm/ci, hlcdc, virtio, maintainers.
- Update fbdev todo.
- Allow setting dma-device for dma-buf import.
- Export efi_mem_desc_lookup to make efidrm build as a module.
Core Changes:
- Update drm scheduler docs.
- Use the correct resv object in TTM delayed destroy.
- Fix compiler warning with panic qr code, and other small fixes.
- drm/ci updates.
- Add debugfs file for listing all bridges.
- Small fixes to drm/client, ttm tests.
- Add documentation to display/hdmi.
- Add kunit tests for bridges.
- Dont fail managed device probing if connector polling fails.
- Create Kconfig.debug for drm core.
- Add tests for the drm scheduler.
- Add and use new access helpers for DPCPD.
- Add generic and optimized conversions for format-helper.
- Begin refcounting panel for improving lifetime handling.
- Unify simpledrm and ofdrm sysfb, and add extra features.
- Split hdmi audio in bridge to make DP audio work.
Driver Changes:
- Convert drivers to use devm_platform_ioremap_resource().
- Assorted small fixes to imx/legacy-bridg, gma500, pl111, nouveau, vc4,
vmwgfx, ast, mxsfb, xlnx, accel/qaic, v3d, bridge/imx8qxp-ldb, ofdrm,
bridge/fsl-ldb, udl, bridge/ti-sn65dsi86, bridge/anx7625, cirrus-qemu,
bridge/cdns-dsi, panel/sharp, panel/himax, bridge/sil902x, renesas,
imagination, various panels.
- Allow attaching more display to vkms.
- Add Powertip PH128800T004-ZZA01 panel.
- Add rotation quirk for ZOTAC panel.
- Convert bridge/tc358775 to atomic.
- Remove deprecated panel calls from synaptics, novatek, samsung panels.
- Refactor shmem helper page pinning and accel drivers using it.
- Add dmabuf support to accel/amdxdna.
- Use 4k page table format for panfrost/mediatek.
- Add common powerup/down dp link helper and use it.
- Assorted compiler warning fixes.
- Support dma-buf import for renesas
Signed-off-by: Dave Airlie <airlied@redhat.com>
# Conflicts:
# include/drm/drm_kunit_helpers.h
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://lore.kernel.org/r/e147ff95-697b-4067-9e2e-7cbd424e162a@linux.intel.com
Some drivers like virtio-gpu, don't map the scanout buffer in the
kernel. Calling vmap() in a panic handler is not safe, and writing an
atomic_vmap() API is more complex than expected [1].
So instead, pass the array of pages of the scanout buffer to the
panic handler, and map only one page at a time to draw the pixels.
This is obviously slow, but acceptable for a panic handler.
[1] https://lore.kernel.org/dri-devel/20250305152555.318159-1-ryasuoka@redhat.com/
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Simona Vetter <simona@ffwll.ch>
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250407140138.162383-3-jfalempe@redhat.com
A number of test suites call functions that expect the returned
drm_display_mode to be destroyed eventually.
However, none of the tests called drm_mode_destroy, which results in a
memory leak.
Since drm_mode_destroy takes two pointers as argument, we can't use a
kunit wrapper. Let's just create a helper every test suite can use.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250408-drm-kunit-drm-display-mode-memleak-v1-1-996305a2e75a@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
One additional BMG PCI ID has been added to the spec; make sure our
driver recognizes devices with this ID properly.
Bspec: 68090
Cc: stable@vger.kernel.org # v6.12+
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250325224709.4073080-2-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit cca9734ebe)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
It is common for the DisplayPort bridges to implement audio support. In
preparation to providing a generic framework for DP audio, add
corresponding interface to struct drm_bridge. As suggested by Maxime
for now this is mostly c&p of the corresponding HDMI audio API.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250314-dp-hdmi-audio-v6-2-dbd228fa73d7@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
As pointed out by Laurent, OP bits are supposed to describe operations.
Split DRM_BRIDGE_OP_HDMI_AUDIO from DRM_BRIDGE_OP_HDMI instead of
overloading DRM_BRIDGE_OP_HDMI.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250314-dp-hdmi-audio-v6-1-dbd228fa73d7@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
DRM bridges are currently considered as a fixed element of a DRM card, and
thus their lifetime is assumed to extend for as long as the card
exists. New use cases, such as hot-pluggable hardware with video bridges,
require DRM bridges to be added to and removed from a DRM card without
tearing the card down. This is possible for connectors already (used by DP
MST), it is now needed for DRM bridges as well.
As a first preliminary step, make bridges reference-counted to allow a
struct drm_bridge (along with the private driver structure embedding it) to
stay allocated even after the driver has been removed, until the last
reference is put.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250326-drm-bridge-refcount-v9-2-5e0661fe1f84@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
Add a macro to allocate and initialize a DRM bridge embedded within a
private driver struct.
Compared to current practice, which is based on [devm_]kzalloc() allocation
followed by open-coded initialization of fields, this allows to have a
common and explicit API to allocate and initialize DRM bridges.
Besides being useful to consolidate bridge driver code, this is a
fundamental step in preparation for adding dynamic lifetime to bridges
based on refcount.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250326-drm-bridge-refcount-v9-1-5e0661fe1f84@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
It doesn't make much sense to allow devices to specify their min/max
resolution as signed integers, and in Rust with CONFIG_RUST_OVERFLOW_CHECKS
enabled this provides us actual over/underflow checks. Similarly, it
doesn't really make much sense for us to allow devices to specify their
minimum/maximum resolution as signed.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250331222556.454334-3-lyude@redhat.com
A negative resolution doesn't really make any sense, so let's make these
parameters unsigned. In C this doesn't make much of a difference, but Rust
is stricter about signed/unsigned casts and additionally can check for
arithmetic over/underflows if CONFIG_RUST_OVERFLOW_CHECKS is enabled.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250331222556.454334-2-lyude@redhat.com
The helper functions drm_dp_link_power_up/down were moved to Tegra
DRM in commit 9a42c7c647 ("drm/tegra: Move drm_dp_link helpers to Tegra DRM")".
Now since more and more users are duplicating the same code in their
own drivers, it's time to make them as DRM DP common helpers again.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250318063452.4983-1-andyshrk@163.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
i915 wants to read out the PTE(s) populated by the BIOS/GOP
to verify that the framebuffer is in the correct location.
Introduce intel_gmch_gtt_read_entry() that reads out the
PTE and decodes it to a somewhat abstract form. For now
we just return the dma_addr, present bit, and local memory
bit. I didn't bother with the snoop bit/etc.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313140838.29742-4-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Allocate panel via reference counting. Add _get() and _put() helper
functions to ensure panel allocations are refcounted. Avoid use after
free by ensuring panel pointer is valid and can be usable till the last
reference is put.
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>
Link: https://lore.kernel.org/r/20250331-b4-panel-refcounting-v4-2-dad50c60c6c9@redhat.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Introduce reference counted allocations for panels to avoid
use-after-free. The patch adds the macro devm_drm_bridge_alloc()
to allocate a new refcounted panel. Followed the documentation for
drmm_encoder_alloc() and devm_drm_dev_alloc and other similar
implementations for this purpose.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>
Link: https://lore.kernel.org/r/20250331-b4-panel-refcounting-v4-1-dad50c60c6c9@redhat.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Toolchain and infrastructure:
- Extract the 'pin-init' API from the 'kernel' crate and make it into
a standalone crate.
In order to do this, the contents are rearranged so that they can
easily be kept in sync with the version maintained out-of-tree that
other projects have started to use too (or plan to, like QEMU).
This will reduce the maintenance burden for Benno, who will now have
his own sub-tree, and will simplify future expected changes like the
move to use 'syn' to simplify the implementation.
- Add '#[test]'-like support based on KUnit.
We already had doctests support based on KUnit, which takes the
examples in our Rust documentation and runs them under KUnit.
Now, we are adding the beginning of the support for "normal" tests,
similar to those the '#[test]' tests in userspace Rust. For instance:
#[kunit_tests(my_suite)]
mod tests {
#[test]
fn my_test() {
assert_eq!(1 + 1, 2);
}
}
Unlike with doctests, the 'assert*!'s do not map to the KUnit
assertion APIs yet.
- Check Rust signatures at compile time for functions called from C by
name.
In particular, introduce a new '#[export]' macro that can be placed
in the Rust function definition. It will ensure that the function
declaration on the C side matches the signature on the Rust function:
#[export]
pub unsafe extern "C" fn my_function(a: u8, b: i32) -> usize {
// ...
}
The macro essentially forces the compiler to compare the types of
the actual Rust function and the 'bindgen'-processed C signature.
These cases are rare so far. In the future, we may consider
introducing another tool, 'cbindgen', to generate C headers
automatically. Even then, having these functions explicitly marked
may be a good idea anyway.
- Enable the 'raw_ref_op' Rust feature: it is already stable, and
allows us to use the new '&raw' syntax, avoiding a couple macros.
After everyone has migrated, we will disallow the macros.
- Pass the correct target to 'bindgen' on Usermode Linux.
- Fix 'rusttest' build in macOS.
'kernel' crate:
- New 'hrtimer' module: add support for setting up intrusive timers
without allocating when starting the timer. Add support for
'Pin<Box<_>>', 'Arc<_>', 'Pin<&_>' and 'Pin<&mut _>' as pointer types
for use with timer callbacks. Add support for setting clock source
and timer mode.
- New 'dma' module: add a simple DMA coherent allocator abstraction and
a test sample driver.
- 'list' module: make the linked list 'Cursor' point between elements,
rather than at an element, which is more convenient to us and allows
for cursors to empty lists; and document it with examples of how to
perform common operations with the provided methods.
- 'str' module: implement a few traits for 'BStr' as well as the
'strip_prefix()' method.
- 'sync' module: add 'Arc::as_ptr'.
- 'alloc' module: add 'Box::into_pin'.
- 'error' module: extend the 'Result' documentation, including a few
examples on different ways of handling errors, a warning about using
methods that may panic, and links to external documentation.
'macros' crate:
- 'module' macro: add the 'authors' key to support multiple authors.
The original key will be kept until everyone has migrated.
Documentation:
- Add error handling sections.
MAINTAINERS:
- Add Danilo Krummrich as reviewer of the Rust "subsystem".
- Add 'RUST [PIN-INIT]' entry with Benno Lossin as maintainer. It has
its own sub-tree.
- Add sub-tree for 'RUST [ALLOC]'.
- Add 'DMA MAPPING HELPERS DEVICE DRIVER API [RUST]' entry with Abdiel
Janulgue as primary maintainer. It will go through the sub-tree of
the 'RUST [ALLOC]' entry.
- Add 'HIGH-RESOLUTION TIMERS [RUST]' entry with Andreas Hindborg as
maintainer. It has its own sub-tree.
And a few other cleanups and improvements.
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Merge tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Extract the 'pin-init' API from the 'kernel' crate and make it into
a standalone crate.
In order to do this, the contents are rearranged so that they can
easily be kept in sync with the version maintained out-of-tree that
other projects have started to use too (or plan to, like QEMU).
This will reduce the maintenance burden for Benno, who will now
have his own sub-tree, and will simplify future expected changes
like the move to use 'syn' to simplify the implementation.
- Add '#[test]'-like support based on KUnit.
We already had doctests support based on KUnit, which takes the
examples in our Rust documentation and runs them under KUnit.
Now, we are adding the beginning of the support for "normal" tests,
similar to those the '#[test]' tests in userspace Rust. For
instance:
#[kunit_tests(my_suite)]
mod tests {
#[test]
fn my_test() {
assert_eq!(1 + 1, 2);
}
}
Unlike with doctests, the 'assert*!'s do not map to the KUnit
assertion APIs yet.
- Check Rust signatures at compile time for functions called from C
by name.
In particular, introduce a new '#[export]' macro that can be placed
in the Rust function definition. It will ensure that the function
declaration on the C side matches the signature on the Rust
function:
#[export]
pub unsafe extern "C" fn my_function(a: u8, b: i32) -> usize {
// ...
}
The macro essentially forces the compiler to compare the types of
the actual Rust function and the 'bindgen'-processed C signature.
These cases are rare so far. In the future, we may consider
introducing another tool, 'cbindgen', to generate C headers
automatically. Even then, having these functions explicitly marked
may be a good idea anyway.
- Enable the 'raw_ref_op' Rust feature: it is already stable, and
allows us to use the new '&raw' syntax, avoiding a couple macros.
After everyone has migrated, we will disallow the macros.
- Pass the correct target to 'bindgen' on Usermode Linux.
- Fix 'rusttest' build in macOS.
'kernel' crate:
- New 'hrtimer' module: add support for setting up intrusive timers
without allocating when starting the timer. Add support for
'Pin<Box<_>>', 'Arc<_>', 'Pin<&_>' and 'Pin<&mut _>' as pointer
types for use with timer callbacks. Add support for setting clock
source and timer mode.
- New 'dma' module: add a simple DMA coherent allocator abstraction
and a test sample driver.
- 'list' module: make the linked list 'Cursor' point between
elements, rather than at an element, which is more convenient to us
and allows for cursors to empty lists; and document it with
examples of how to perform common operations with the provided
methods.
- 'str' module: implement a few traits for 'BStr' as well as the
'strip_prefix()' method.
- 'sync' module: add 'Arc::as_ptr'.
- 'alloc' module: add 'Box::into_pin'.
- 'error' module: extend the 'Result' documentation, including a few
examples on different ways of handling errors, a warning about
using methods that may panic, and links to external documentation.
'macros' crate:
- 'module' macro: add the 'authors' key to support multiple authors.
The original key will be kept until everyone has migrated.
Documentation:
- Add error handling sections.
MAINTAINERS:
- Add Danilo Krummrich as reviewer of the Rust "subsystem".
- Add 'RUST [PIN-INIT]' entry with Benno Lossin as maintainer. It has
its own sub-tree.
- Add sub-tree for 'RUST [ALLOC]'.
- Add 'DMA MAPPING HELPERS DEVICE DRIVER API [RUST]' entry with
Abdiel Janulgue as primary maintainer. It will go through the
sub-tree of the 'RUST [ALLOC]' entry.
- Add 'HIGH-RESOLUTION TIMERS [RUST]' entry with Andreas Hindborg as
maintainer. It has its own sub-tree.
And a few other cleanups and improvements"
* tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (71 commits)
rust: dma: add `Send` implementation for `CoherentAllocation`
rust: macros: fix `make rusttest` build on macOS
rust: block: refactor to use `&raw mut`
rust: enable `raw_ref_op` feature
rust: uaccess: name the correct function
rust: rbtree: fix comments referring to Box instead of KBox
rust: hrtimer: add maintainer entry
rust: hrtimer: add clocksource selection through `ClockId`
rust: hrtimer: add `HrTimerMode`
rust: hrtimer: implement `HrTimerPointer` for `Pin<Box<T>>`
rust: alloc: add `Box::into_pin`
rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&mut T>`
rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&T>`
rust: hrtimer: add `hrtimer::ScopedHrTimerPointer`
rust: hrtimer: add `UnsafeHrTimerPointer`
rust: hrtimer: allow timer restart from timer handler
rust: str: implement `strip_prefix` for `BStr`
rust: str: implement `AsRef<BStr>` for `[u8]` and `BStr`
rust: str: implement `Index` for `BStr`
rust: str: implement `PartialEq` for `BStr`
...
Add a helper API that can be used by the DSI hosts to find the required
input bus format for the given output dsi pixel format.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Signed-off-by: Aradhya Bhatia <aradhya.bhatia@linux.dev>
Link: https://lore.kernel.org/r/20250329113925.68204-8-aradhya.bhatia@linux.dev
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
uapi:
- add mediatek tiled fourcc
- add support for notifying userspace on device wedged
new driver:
- appletbdrm: support for Apple Touchbar displays on m1/m2
- nova-core: skeleton rust driver to develop nova inside off
firmware:
- add some rust firmware pieces
rust:
- add 'LocalModule' type alias
component:
- add helper to query bound status
fbdev:
- fbtft: remove access to page->index
media:
- cec: tda998x: import driver from drm
dma-buf:
- add fast path for single fence merging
tests:
- fix lockdep warnings
atomic:
- allow full modeset on connector changes
- clarify semantics of allow_modeset and drm_atomic_helper_check
- async-flip: support on arbitary planes
- writeback: fix UAF
- Document atomic-state history
format-helper:
- support ARGB8888 to ARGB4444 conversions
buddy:
- fix multi-root cleanup
ci:
- update IGT
dp:
- support extended wake timeout
- mst: fix RAD to string conversion
- increase DPCD eDP control CAP size to 5 bytes
- add DPCD eDP v1.5 definition
- add helpers for LTTPR transparent mode
panic:
- encode QR code according to Fido 2.2
scheduler:
- add parameter struct for init
- improve job peek/pop operations
- optimise drm_sched_job struct layout
ttm:
- refactor pool allocation
- add helpers for TTM shrinker
panel-orientation:
- add a bunch of new quirks
panel:
- convert panels to multi-style functions
- edp: Add support for B140UAN04.4, BOE NV140FHM-NZ, CSW MNB601LS1-3,
LG LP079QX1-SP0V, MNE007QS3-7, STA 116QHD024002, Starry 116KHD024006,
Lenovo T14s Gen6 Snapdragon
- himax-hx83102: Add support for CSOT PNA957QT1-1, Kingdisplay
kd110n11-51ie, Starry 2082109qfh040022-50e
- visionox-r66451: use multi-style MIPI-DSI functions
- raydium-rm67200: Add driver for Raydium RM67200
- simple: Add support for BOE AV123Z7M-N17, BOE AV123Z7M-N17
- sony-td4353-jdi: Use MIPI-DSI multi-func interface
- summit: Add driver for Apple Summit display panel
- visionox-rm692e5: Add driver for Visionox RM692E5
bridge:
- pass full atomic state to various callbacks
- adv7511: Report correct capabilities
- it6505: Fix HDCP V compare
- snd65dsi86: fix device IDs
- nwl-dsi: set bridge type
- ti-sn65si83: add error recovery and set bridge type
- synopsys: add HDMI audio support
xe:
- support device-wedged event
- add mmap support for PCI memory barrier
- perf pmu integration and expose per-engien activity
- add EU stall sampling support
- GPU SVM and Xe SVM implementation
- use TTM shrinker
- add survivability mode to allow the driver to do
firmware updates in critical failure states
- PXP HWDRM support for MTL and LNL
- expose package/vram temps over hwmon
- enable DP tunneling
- drop mmio_ext abstraction
- Reject BO evcition if BO is bound to current VM
- Xe suballocator improvements
- re-use display vmas when possible
- add GuC Buffer Cache abstraction
- PCI ID update for Panther Lake and Battlemage
- Enable SRIOV for Panther Lake
- Refactor VRAM manager location
i915:
- enable extends wake timeout
- support device-wedged event
- Enable DP 128b/132b SST DSC
- FBC dirty rectangle support for display version 30+
- convert i915/xe to drm client setup
- Compute HDMI PLLS for rates not in fixed tables
- Allow DSB usage when PSR is enabled on LNL+
- Enable panel replay without full modeset
- Enable async flips with compressed buffers on ICL+
- support luminance based brightness via DPCD for eDP
- enable VRR enable/disable without full modeset
- allow GuC SLPC default strategies on MTL+ for performance
- lots of display refactoring in move to struct intel_display
amdgpu:
- add device wedged event
- support async page flips on overlay planes
- enable broadcast RGB drm property
- add info ioctl for virt mode
- OEM i2c support for RGB lights
- GC 11.5.2 + 11.5.3 support
- SDMA 6.1.3 support
- NBIO 7.9.1 + 7.11.2 support
- MMHUB 1.8.1 + 3.3.2 support
- DCN 3.6.0 support
- Add dynamic workload profile switching for GC 10-12
- support larger VBIOS sizes
- Mark gttsize parameters as deprecated
- Initial JPEG queue resset support
amdkfd:
- add KFD per process flags for setting precision
- sync pasid values between KGD and KFD
- improve GTT/VRAM handling for APUs
- fix user queue validation on GC7/8
- SDMA queue reset support
raedeon:
- rs400 hyperz fix
i2c:
- td998x: drop platform_data, split driver into media and bridge
ast:
- transmitter chip detection refactoring
- vbios display mode refactoring
- astdp: fix connection status and filter unsupported modes
- cursor handling refactoring
imagination:
- check job dependencies with sched helper
ivpu:
- improve command queue handling
- use workqueue for IRQ handling
- add support HW fault injection
- locking fixes
mgag200:
- add support for G200eH5
msm:
- dpu: add concurrent writeback support for DPU 10.x+
- use LTTPR helpers
- GPU:
- Fix obscure GMU suspend failure
- Expose syncobj timeline support
- Extend GPU devcoredump with pagetable info
- a623 support
- Fix a6xx gen1/gen2 indexed-register blocks in gpu snapshot / devcoredump
- Display:
- Add cpu-cfg interconnect paths on SM8560 and SM8650
- Introduce KMS OMMU fault handler, causing devcoredump snapshot
- Fixed error pointer dereference in msm_kms_init_aspace()
- DPU:
- Fix mode_changing handling
- Add writeback support on SM6150 (QCS615)
- Fix DSC programming in 1:1:1 topology
- Reworked hardware resource allocation, moving it to the CRTC code
- Enabled support for Concurrent WriteBack (CWB) on SM8650
- Enabled CDM blocks on all relevant platforms
- Reworked debugfs interface for BW/clocks debugging
- Clear perf params before calculating bw
- Support YUV formats on writeback
- Fixed double inclusion
- Fixed writeback in YUV formats when using cloned output, Dropped
wb2_formats_rgb
- Corrected dpu_crtc_check_mode_changed and struct dpu_encoder_virt
kerneldocs
- Fixed uninitialized variable in dpu_crtc_kickoff_clone_mode()
- DSI:
- DSC-related fixes
- Rework clock programming
- DSI PHY:
- Fix 7nm (and lower) PHY programming
- Add proper DT schema definitions for DSI PHY clocks
- HDMI:
- Rework the driver, enabling the use of the HDMI Connector framework
- Bindings:
- Added eDP PHY on SA8775P
nouveau:
- move drm_slave_encoder interface into driver
- nvkm: refactor GSP RPC
- use LTTPR helpers
mediatek:
- HDMI fixup and refinement
- add MT8188 dsc compatible
- MT8365 SoC support
panthor:
- Expose sizes of intenral BOs via fdinfo
- Fix race between reset and suspend
- Improve locking
qaic:
- Add support for AIC200
renesas:
- Fix limits in DT bindings
rockchip:
- support rk3562-mali
- rk3576: Add HDMI support
- vop2: Add new display modes on RK3588 HDMI0 up to 4K
- Don't change HDMI reference clock rate
- Fix DT bindings
- analogix_dp: add eDP support
- fix shutodnw
solomon:
- Set SPI device table to silence warnings
- Fix pixel and scanline encoding
v3d:
- handle clock
vc4:
- Use drm_exec
- Use dma-resv for wait-BO ioctl
- Remove seqno infrastructure
virtgpu:
- Support partial mappings of GEM objects
- Reserve VGA resources during initialization
- Fix UAF in virtgpu_dma_buf_free_obj()
- Add panic support
vkms:
- Switch to a managed modesetting pipeline
- Add support for ARGB8888
- fix UAf
xlnx:
- Set correct DMA segment size
- use mutex guards
- Fix error handling
- Fix docs
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Merge tag 'drm-next-2025-03-28' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
"Outside of drm there are some rust patches from Danilo who maintains
that area in here, and some pieces for drm header check tests.
The major things in here are a new driver supporting the touchbar
displays on M1/M2, the nova-core stub driver which is just the vehicle
for adding rust abstractions and start developing a real driver inside
of.
xe adds support for SVM with a non-driver specific SVM core
abstraction that will hopefully be useful for other drivers, along
with support for shrinking for TTM devices. I'm sure xe and AMD
support new devices, but the pipeline depth on these things is hard to
know what they end up being in the marketplace!
uapi:
- add mediatek tiled fourcc
- add support for notifying userspace on device wedged
new driver:
- appletbdrm: support for Apple Touchbar displays on m1/m2
- nova-core: skeleton rust driver to develop nova inside off
firmware:
- add some rust firmware pieces
rust:
- add 'LocalModule' type alias
component:
- add helper to query bound status
fbdev:
- fbtft: remove access to page->index
media:
- cec: tda998x: import driver from drm
dma-buf:
- add fast path for single fence merging
tests:
- fix lockdep warnings
atomic:
- allow full modeset on connector changes
- clarify semantics of allow_modeset and drm_atomic_helper_check
- async-flip: support on arbitary planes
- writeback: fix UAF
- Document atomic-state history
format-helper:
- support ARGB8888 to ARGB4444 conversions
buddy:
- fix multi-root cleanup
ci:
- update IGT
dp:
- support extended wake timeout
- mst: fix RAD to string conversion
- increase DPCD eDP control CAP size to 5 bytes
- add DPCD eDP v1.5 definition
- add helpers for LTTPR transparent mode
panic:
- encode QR code according to Fido 2.2
scheduler:
- add parameter struct for init
- improve job peek/pop operations
- optimise drm_sched_job struct layout
ttm:
- refactor pool allocation
- add helpers for TTM shrinker
panel-orientation:
- add a bunch of new quirks
panel:
- convert panels to multi-style functions
- edp: Add support for B140UAN04.4, BOE NV140FHM-NZ, CSW MNB601LS1-3,
LG LP079QX1-SP0V, MNE007QS3-7, STA 116QHD024002, Starry
116KHD024006, Lenovo T14s Gen6 Snapdragon
- himax-hx83102: Add support for CSOT PNA957QT1-1, Kingdisplay
kd110n11-51ie, Starry 2082109qfh040022-50e
- visionox-r66451: use multi-style MIPI-DSI functions
- raydium-rm67200: Add driver for Raydium RM67200
- simple: Add support for BOE AV123Z7M-N17, BOE AV123Z7M-N17
- sony-td4353-jdi: Use MIPI-DSI multi-func interface
- summit: Add driver for Apple Summit display panel
- visionox-rm692e5: Add driver for Visionox RM692E5
bridge:
- pass full atomic state to various callbacks
- adv7511: Report correct capabilities
- it6505: Fix HDCP V compare
- snd65dsi86: fix device IDs
- nwl-dsi: set bridge type
- ti-sn65si83: add error recovery and set bridge type
- synopsys: add HDMI audio support
xe:
- support device-wedged event
- add mmap support for PCI memory barrier
- perf pmu integration and expose per-engien activity
- add EU stall sampling support
- GPU SVM and Xe SVM implementation
- use TTM shrinker
- add survivability mode to allow the driver to do firmware updates
in critical failure states
- PXP HWDRM support for MTL and LNL
- expose package/vram temps over hwmon
- enable DP tunneling
- drop mmio_ext abstraction
- Reject BO evcition if BO is bound to current VM
- Xe suballocator improvements
- re-use display vmas when possible
- add GuC Buffer Cache abstraction
- PCI ID update for Panther Lake and Battlemage
- Enable SRIOV for Panther Lake
- Refactor VRAM manager location
i915:
- enable extends wake timeout
- support device-wedged event
- Enable DP 128b/132b SST DSC
- FBC dirty rectangle support for display version 30+
- convert i915/xe to drm client setup
- Compute HDMI PLLS for rates not in fixed tables
- Allow DSB usage when PSR is enabled on LNL+
- Enable panel replay without full modeset
- Enable async flips with compressed buffers on ICL+
- support luminance based brightness via DPCD for eDP
- enable VRR enable/disable without full modeset
- allow GuC SLPC default strategies on MTL+ for performance
- lots of display refactoring in move to struct intel_display
amdgpu:
- add device wedged event
- support async page flips on overlay planes
- enable broadcast RGB drm property
- add info ioctl for virt mode
- OEM i2c support for RGB lights
- GC 11.5.2 + 11.5.3 support
- SDMA 6.1.3 support
- NBIO 7.9.1 + 7.11.2 support
- MMHUB 1.8.1 + 3.3.2 support
- DCN 3.6.0 support
- Add dynamic workload profile switching for GC 10-12
- support larger VBIOS sizes
- Mark gttsize parameters as deprecated
- Initial JPEG queue resset support
amdkfd:
- add KFD per process flags for setting precision
- sync pasid values between KGD and KFD
- improve GTT/VRAM handling for APUs
- fix user queue validation on GC7/8
- SDMA queue reset support
raedeon:
- rs400 hyperz fix
i2c:
- td998x: drop platform_data, split driver into media and bridge
ast:
- transmitter chip detection refactoring
- vbios display mode refactoring
- astdp: fix connection status and filter unsupported modes
- cursor handling refactoring
imagination:
- check job dependencies with sched helper
ivpu:
- improve command queue handling
- use workqueue for IRQ handling
- add support HW fault injection
- locking fixes
mgag200:
- add support for G200eH5
msm:
- dpu: add concurrent writeback support for DPU 10.x+
- use LTTPR helpers
- GPU:
- Fix obscure GMU suspend failure
- Expose syncobj timeline support
- Extend GPU devcoredump with pagetable info
- a623 support
- Fix a6xx gen1/gen2 indexed-register blocks in gpu snapshot /
devcoredump
- Display:
- Add cpu-cfg interconnect paths on SM8560 and SM8650
- Introduce KMS OMMU fault handler, causing devcoredump snapshot
- Fixed error pointer dereference in msm_kms_init_aspace()
- DPU:
- Fix mode_changing handling
- Add writeback support on SM6150 (QCS615)
- Fix DSC programming in 1:1:1 topology
- Reworked hardware resource allocation, moving it to the CRTC code
- Enabled support for Concurrent WriteBack (CWB) on SM8650
- Enabled CDM blocks on all relevant platforms
- Reworked debugfs interface for BW/clocks debugging
- Clear perf params before calculating bw
- Support YUV formats on writeback
- Fixed double inclusion
- Fixed writeback in YUV formats when using cloned output, Dropped
wb2_formats_rgb
- Corrected dpu_crtc_check_mode_changed and struct dpu_encoder_virt
kerneldocs
- Fixed uninitialized variable in dpu_crtc_kickoff_clone_mode()
- DSI:
- DSC-related fixes
- Rework clock programming
- DSI PHY:
- Fix 7nm (and lower) PHY programming
- Add proper DT schema definitions for DSI PHY clocks
- HDMI:
- Rework the driver, enabling the use of the HDMI Connector
framework
- Bindings:
- Added eDP PHY on SA8775P
nouveau:
- move drm_slave_encoder interface into driver
- nvkm: refactor GSP RPC
- use LTTPR helpers
mediatek:
- HDMI fixup and refinement
- add MT8188 dsc compatible
- MT8365 SoC support
panthor:
- Expose sizes of intenral BOs via fdinfo
- Fix race between reset and suspend
- Improve locking
qaic:
- Add support for AIC200
renesas:
- Fix limits in DT bindings
rockchip:
- support rk3562-mali
- rk3576: Add HDMI support
- vop2: Add new display modes on RK3588 HDMI0 up to 4K
- Don't change HDMI reference clock rate
- Fix DT bindings
- analogix_dp: add eDP support
- fix shutodnw
solomon:
- Set SPI device table to silence warnings
- Fix pixel and scanline encoding
v3d:
- handle clock
vc4:
- Use drm_exec
- Use dma-resv for wait-BO ioctl
- Remove seqno infrastructure
virtgpu:
- Support partial mappings of GEM objects
- Reserve VGA resources during initialization
- Fix UAF in virtgpu_dma_buf_free_obj()
- Add panic support
vkms:
- Switch to a managed modesetting pipeline
- Add support for ARGB8888
- fix UAf
xlnx:
- Set correct DMA segment size
- use mutex guards
- Fix error handling
- Fix docs"
* tag 'drm-next-2025-03-28' of https://gitlab.freedesktop.org/drm/kernel: (1762 commits)
drm/amd/pm: Update feature list for smu_v13_0_6
drm/amdgpu: Add parameter documentation for amdgpu_sync_fence
drm/amdgpu/discovery: optionally use fw based ip discovery
drm/amdgpu/discovery: use specific ip_discovery.bin for legacy asics
drm/amdgpu/discovery: check ip_discovery fw file available
drm/amd/pm: Remove unnecessay UQ10 to UINT conversion
drm/amd/pm: Remove unnecessay UQ10 to UINT conversion
drm/amdgpu/sdma_v4_4_2: update VM flush implementation for SDMA
drm/amdgpu: Optimize VM invalidation engine allocation and synchronize GPU TLB flush
drm/amd/amdgpu: Increase max rings to enable SDMA page ring
drm/amdgpu: Decode deferred error type in gfx aca bank parser
drm/amdgpu/gfx11: Add Cleaner Shader Support for GFX11.5 GPUs
drm/amdgpu/mes: clean up SDMA HQD loop
drm/amdgpu/mes: enable compute pipes across all MEC
drm/amdgpu/mes: drop MES 10.x leftovers
drm/amdgpu/mes: optimize compute loop handling
drm/amdgpu/sdma: guilty tracking is per instance
drm/amdgpu/sdma: fix engine reset handling
drm/amdgpu: remove invalid usage of sched.ready
drm/amdgpu: add cleaner shader trace point
...
Use refcount_t helper for vmap_use_count to make refcounting consistent
with pages_use_count and pages_pin_count that use refcount_t. This also
makes vmapping to benefit from the refcount_t's overflow checks.
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-11-dmitry.osipenko@collabora.com
The vmapped pages shall be pinned in memory and previously get/put_pages()
were implicitly hard-pinning/unpinning the pages. This will no longer be
the case with addition of memory shrinker because pages_use_count > 0 won't
determine anymore whether pages are hard-pinned (they will be soft-pinned),
while the new pages_pin_count will do the hard-pinning. Switch the
vmap/vunmap() to use pin/unpin() functions in a preparation of addition
of the memory shrinker support to drm-shmem.
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-10-dmitry.osipenko@collabora.com
Use atomic refcount_t helper for pages_use_count to optimize pin/unpin
functions by skipping reservation locking while GEM's pin refcount > 1.
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-9-dmitry.osipenko@collabora.com
Add separate pages_pin_count for tracking of whether drm-shmem pages are
moveable or not. With the addition of memory shrinker support to drm-shmem,
the pages_use_count will no longer determine whether pages are hard-pinned
in memory, but whether pages exist and are soft-pinned (and could be swapped
out). The pages_pin_count > 1 will hard-pin pages in memory.
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-8-dmitry.osipenko@collabora.com
Add locked and remove unlocked postfixes from drm-shmem function names,
making names consistent with the drm/gem core code.
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-6-dmitry.osipenko@collabora.com
The vmap/vunmap/evict GEM callbacks are always invoked with a held GEM's
reservation lock. Document this locking rule for clarity.
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-4-dmitry.osipenko@collabora.com
Add _locked postfix to drm_gem functions that have unlocked counterpart
functions to make GEM functions naming more consistent and intuitive in
regards to the locking requirements.
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-3-dmitry.osipenko@collabora.com
Make drm/gem API function names consistent by having locked function
use the _locked postfix in the name, while the unlocked variants don't
use the _unlocked postfix. Rename drm_gem_v/unmap() function names to
make them consistent with the rest of the API functions.
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.d>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250322212608.40511-2-dmitry.osipenko@collabora.com
Existing DPCD access functions return an error code or the number of
bytes being read / write in case of partial access. However a lot of
drivers either (incorrectly) ignore partial access or mishandle error
codes. In other cases this results in a boilerplate code which compares
returned value with the size.
Implement new set of DPCD access helpers, which ignore partial access,
always return 0 or an error code.
Suggested-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20250324-drm-rework-dpcd-access-v4-1-e80ff89593df@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Failing to set up connector polling is not significant enough to
fail device probing. Print a warning and return nothing from the
init helper.
This only affects the managed init function. The unmanaged init
already never fails with an error.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250303145604.62962-4-tzimmermann@suse.de
Let's provide an helper to make it easier for bridge drivers to
power-cycle their bridge.
In order to avoid a circular dependency between that new helper and
drm_atomic_helper_reset_crtc(), this new helper will be in a
drm_bridge_helper.c file to follow the pattern we have for other
objects.
Reviewed-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch>
Tested-by: Herve Codina <herve.codina@bootlin.com>
Co-developed-by: Simona Vetter <simona.vetter@intel.com>
Signed-off-by: Simona Vetter <simona.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313-bridge-connector-v6-8-511c54a604fb@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
With the bridges switching over to drm_bridge_connector, the direct
association between a bridge driver and its connector was lost.
This is mitigated for atomic bridge drivers by the fact you can access
the encoder, and then call drm_atomic_get_old_connector_for_encoder() or
drm_atomic_get_new_connector_for_encoder() with drm_atomic_state.
This was also made easier by providing drm_atomic_state directly to all
atomic hooks bridges can implement.
However, bridge drivers don't have a way to access drm_atomic_state
outside of the modeset path, like from the hotplug interrupt path or any
interrupt handler.
Let's introduce a function to retrieve the connector currently assigned
to an encoder, without using drm_atomic_state, to make these drivers'
life easier.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch>
Tested-by: Herve Codina <herve.codina@bootlin.com>
Co-developed-by: Simona Vetter <simona.vetter@intel.com>
Signed-off-by: Simona Vetter <simona.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313-bridge-connector-v6-4-511c54a604fb@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
The drm_bridge structure contains an encoder pointer that is widely used
by bridge drivers. This pattern is largely documented as deprecated in
other KMS entities for atomic drivers.
However, one of the main use of that pointer is done in attach to just
call drm_bridge_attach on the next bridge to add it to the bridge list.
While this dereferences the bridge->encoder pointer, it's effectively
the same encoder the bridge was being attached to.
We can make it more explicit by adding the encoder the bridge is
attached to to the list of attach parameters. This also removes the need
to dereference bridge->encoder in most drivers.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313-bridge-connector-v6-1-511c54a604fb@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
The global bridges_list holding all the bridges between drm_bridge_add()
and drm_bridge_remove() cannot be inspected via debugfs. Add a file showing
it.
To avoid code duplication, move the code printing a bridge info to a common
function.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250226-drm-debugfs-show-all-bridges-v8-2-bb511cc49d83@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
In preparation to expose more info about bridges in debugfs, which will
require more insight into drm_bridge data structures, move the bridges_show
code to drm_bridge.c.
Suggested-by: Jani Nikula <jani.nikula@linux.intel.com>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250226-drm-debugfs-show-all-bridges-v8-1-bb511cc49d83@bootlin.com
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
Importing dma-bufs via PRIME requires a DMA-capable device. Devices on
peripheral busses, such as USB, often cannot perform DMA by themselves.
Without DMA-capable device PRIME import fails. DRM drivers for USB
devices already use a separate DMA device for dma-buf imports. Make the
mechanism generally available.
Besides the case of USB, there are embedded DRM devices without DMA
capability. DMA is performed by a separate controller. DRM drivers should
set this accordingly.
Add the field dma_dev to struct drm_device to refer to the device's DMA
device. For USB this should be the USB controller. Use dma_dev in the
PRIME import helpers, if set.
v2:
- acquire internal reference on dma_dev (Jani)
- add DMA-controller usecase to docs (Maxime)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250307080836.42848-2-tzimmermann@suse.de
- Expose per-engine activity via perf pmu (Riana, Lucas, Umesh)
- Add support for EU stall sampling (Harish, Ashutosh)
- Allow userspace to provide low latency hint for submission (Tejas)
- GPU SVM and Xe SVM implementation (Matthew Brost)
Cross-subsystem Changes:
- devres handling for component drivers (Lucas)
- Backmege drm-next to allow cross dependent change with i915
- GPU SVM and Xe SVM implementation (Matthew Brost)
Core Changes:
Driver Changes:
- Fixes to userptr and missing validations (Matthew Auld, Thomas
Hellström, Matthew Brost)
- devcoredump typos and error handling improvement (Shuicheng)
- Allow oa_exponent value of 0 (Umesh)
- Finish moving device probe to devm (Lucas)
- Fix race between submission restart and scheduled being freed (Tejas)
- Fix counter overflows in gt_stats (Francois)
- Refactor and add missing workarounds and tunings for pre-Xe2 platforms
(Aradhya, Tvrtko)
- Fix PXP locks interaction with exec queues being killed (Daniele)
- Eliminate TIMESTAMP_OVERRIDE from xe (Matt Roper)
- Change xe_gen_wa_oob to allow building on MacOS (Daniel Gomez)
- New workarounds for Panther Lake (Tejas)
- Fix VF resume errors (Satyanarayana)
- Fix workaround infra skipping some workarounds dependent on engine
initialization (Tvrtko)
- Improve per-IP descriptors (Gustavo)
- Add more error injections to probe sequence (Francois)
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Merge tag 'drm-xe-next-2025-03-07' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next
UAPI Changes:
- Expose per-engine activity via perf pmu (Riana, Lucas, Umesh)
- Add support for EU stall sampling (Harish, Ashutosh)
- Allow userspace to provide low latency hint for submission (Tejas)
- GPU SVM and Xe SVM implementation (Matthew Brost)
Cross-subsystem Changes:
- devres handling for component drivers (Lucas)
- Backmege drm-next to allow cross dependent change with i915
- GPU SVM and Xe SVM implementation (Matthew Brost)
Core Changes:
Driver Changes:
- Fixes to userptr and missing validations (Matthew Auld, Thomas
Hellström, Matthew Brost)
- devcoredump typos and error handling improvement (Shuicheng)
- Allow oa_exponent value of 0 (Umesh)
- Finish moving device probe to devm (Lucas)
- Fix race between submission restart and scheduled being freed (Tejas)
- Fix counter overflows in gt_stats (Francois)
- Refactor and add missing workarounds and tunings for pre-Xe2 platforms
(Aradhya, Tvrtko)
- Fix PXP locks interaction with exec queues being killed (Daniele)
- Eliminate TIMESTAMP_OVERRIDE from xe (Matt Roper)
- Change xe_gen_wa_oob to allow building on MacOS (Daniel Gomez)
- New workarounds for Panther Lake (Tejas)
- Fix VF resume errors (Satyanarayana)
- Fix workaround infra skipping some workarounds dependent on engine
initialization (Tvrtko)
- Improve per-IP descriptors (Gustavo)
- Add more error injections to probe sequence (Francois)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ilc5jvtyaoyi6woyhght5a6sw5jcluiojjueorcyxbynrcpcjp@mw2mi6rd6a7l
This validates at compile time that the signatures match what is in the
header file. It highlights one annoyance with the compile-time check,
which is that it can only be used with functions marked unsafe.
If the function is not unsafe, then this error is emitted:
error[E0308]: `if` and `else` have incompatible types
--> <linux>/drivers/gpu/drm/drm_panic_qr.rs:987:19
|
986 | #[export]
| --------- expected because of this
987 | pub extern "C" fn drm_panic_qr_max_data_size(version: u8, url_len: usize) -> usize {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected unsafe fn, found safe fn
|
= note: expected fn item `unsafe extern "C" fn(_, _) -> _ {kernel::bindings::drm_panic_qr_max_data_size}`
found fn item `extern "C" fn(_, _) -> _ {drm_panic_qr_max_data_size}`
The signature declarations are moved to a header file so it can be
included in the Rust bindings helper, and the extern keyword is removed
as it is unnecessary.
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Tamir Duberstein <tamird@gmail.com>
Acked-by: Simona Vetter <simona.vetter@ffwll.ch>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250303-export-macro-v3-5-41fbad85a27f@google.com
[ Fixed `rustfmt`. Moved on top the unsafe requirement comment to follow
the usual style, and slightly reworded it for clarity. Formatted
bindings helper comment. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Cross-subsystem Changes:
base:
- component: Provide helper to query bound status
fbdev:
- fbtft: Remove access to page->index
Core Changes:
- Fix usage of logging macros in several places
gem:
- Add test function for imported dma-bufs and use it in core and helpers
- Avoid struct drm_gem_object.import_attach
tests:
- Fix lockdep warnings
ttm:
- Add helpers for TTM shrinker
Driver Changes:
adp:
- Add support for Apple Touch Bar displays on M1/M2
amdxdna:
- Fix interrupt handling
appletbdrm:
- Add support for Apple Touch Bar displays on x86
bridge:
- synopsys: Add HDMI audio support
- ti-sn65dsi83: Support negative DE polarity
ipu-v3:
- Remove unused code
nouveau:
- Avoid multiple -Wflex-array-member-not-at-end warnings
panthor:
- Fix CS_STATUS_ defines
- Improve locking
rockchip:
- analogix_dp: Add eDP support
- lvds: Improve logging
- vop2: Improve HDMI mode handling; Add support for RK3576
- Fix shutdown
- Support rk3562-mali
xe:
- Use TTM shrinker
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Merge tag 'drm-misc-next-2025-03-06' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
drm-misc-next for v6.15:
Cross-subsystem Changes:
base:
- component: Provide helper to query bound status
fbdev:
- fbtft: Remove access to page->index
Core Changes:
- Fix usage of logging macros in several places
gem:
- Add test function for imported dma-bufs and use it in core and helpers
- Avoid struct drm_gem_object.import_attach
tests:
- Fix lockdep warnings
ttm:
- Add helpers for TTM shrinker
Driver Changes:
adp:
- Add support for Apple Touch Bar displays on M1/M2
amdxdna:
- Fix interrupt handling
appletbdrm:
- Add support for Apple Touch Bar displays on x86
bridge:
- synopsys: Add HDMI audio support
- ti-sn65dsi83: Support negative DE polarity
ipu-v3:
- Remove unused code
nouveau:
- Avoid multiple -Wflex-array-member-not-at-end warnings
panthor:
- Fix CS_STATUS_ defines
- Improve locking
rockchip:
- analogix_dp: Add eDP support
- lvds: Improve logging
- vop2: Improve HDMI mode handling; Add support for RK3576
- Fix shutdown
- Support rk3562-mali
xe:
- Use TTM shrinker
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306130700.GA485504@linux.fritz.box
Add DRM_GPUVA_OP_DRIVER which allows driver to define their own gpuvm
ops. Useful for driver created ops which can be passed into the bind
software pipeline.
v3:
- s/DRM_GPUVA_OP_USER/DRM_GPUVA_OP_DRIVER (Thomas)
- Better commit message (Thomas)
Cc: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-14-matthew.brost@intel.com
