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Add a color pipeline with three colorops in the sequence
1D LUT - 3x4 CTM - 1D LUT
This pipeline can be used to do any color space conversion or HDR
tone mapping
v2: Change namespace to drm_plane_colorop*
v3: Use simpler/pre-existing colorops for first iteration
v4:
- s/*_tf_*/*_color_* (Jani)
- Refactor to separate files (Jani)
- Add missing space in comment (Suraj)
- Consolidate patch that adds/attaches pipeline property
v5:
- Limit MAX_COLOR_PIPELINES to 2.(Suraj)
Increase it as and when we add more pipelines.
- Remove redundant initialization code (Suraj)
v6:
- Use drm_plane_create_color_pipeline_property() (Arun)
Now MAX_COLOR_PIPELINES is 1
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-5-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Add data structure to store intel specific details of colorop
v2:
- Remove dead code
- Convert macro to function (Jani)
- Remove colorop state as it is not being used
- Refactor to separate file
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-3-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Linux 6.18-rc6
Backmerge in order to merge msm next
Signed-off-by: Dave Airlie <airlied@redhat.com>
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It is possible to force a specific version of python to be used when
building the kernel by passing PYTHON3= on the make command line.
However kernel-doc.py is currently called with python3 hard-coded and
thus ignores this setting.
Use $(PYTHON3) to run $(KERNELDOC) so that the desired version of
python is used.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://patch.msgid.link/20251107192933.2bfe9e57@endymion
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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The current attempted split between xe/i915 vs. display
for intel_frontbuffer is a mess:
- the i915 rcu leaks through the interface to the display side
- the obj->frontbuffer write-side is now protected by a display
specific spinlock even though the actual obj->framebuffer
pointer lives in a i915 specific structure
- the kref is getting poked directly from both sides
- i915_active is still on the display side
Clean up the mess by moving everything about the frontbuffer
lifetime management to the i915/xe side:
- the rcu usage is now completely contained in i915
- frontbuffer_lock is moved into i915
- kref is on the i915/xe side (xe needs the refcount as well
due to intel_frontbuffer_queue_flush()->intel_frontbuffer_ref())
- the bo (and its refcounting) is no longer on the display side
- i915_active is contained in i915
I was pondering whether we could do this in some kind of smaller
steps, and perhaps we could, but it would probably have to start
with a bunch of reverts (which for sure won't go cleanly anymore).
So not convinced it's worth the hassle.
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251016185408.22735-10-ville.syrjala@linux.intel.com
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Define function to bring phy lane out of reset for LT Phy and the
corresponding pre-requisite steps before we follow the steps for
Phy lane reset. Also create a skeleton of LT PHY PLL enable sequence
function in which we can place this function
Bspec: 77449, 74749, 74499, 74495, 68960
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://patch.msgid.link/20251101032513.4171255-4-suraj.kandpal@intel.com
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Add intel_display_utils.c for display utilities that need more than a
header.
Start off with intel_display_run_as_guest(). The implementation is
intentional duplication of the i915_utils.h i915_run_as_guest(), with
the idea that it's small enough to not matter.
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://patch.msgid.link/469f9c41e0c3e3099314a3cf1a7671bf36ec8ffd.1761146196.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Add register definitions for sharpness strength and
filter window size used by CASF. Provide functions to
read and write these fields.
The sharpness strength value is determined by user input,
while the winsize is based on the resolution. The casf_enable
flag should be set if the platform supports sharpness adjustments
and the user API strength is not zero. Once sharpness is
enabled, update the strength bit of the register whenever
the user changes the strength value, as the enable bit and
winsize bit remain constant.
Introduce helper to enable, disable and update strength.
Add relavant strength and winsize in both enable and disable.
v2: Introduce get_config for casf[Ankit]
v3: Replace 0 with FILTER_STRENGTH_MASK[Ankit]
v4: After updating strength add win_sz register
v5: Replace u16 with u32 for total_pixel
v6: Add casf logging
v7: Add helper for enable and disable casf
Signed-off-by: Nemesa Garg <nemesa.garg@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20251028120747.3027332-4-ankit.k.nautiyal@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Currently intel_bw.c contains basically three completely independent
parts:
- SAGV/memory bandwidth handling
- DBuf bandwidth handling
- "Maximum pipe read bandwidth" calculation, which is some kind
of internal per-pipe bandwidth limit.
Carve out the DBuf bandwdith handling into a separate file since
there is no actual dependency between it and the rest of intel_bw.c.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20251013201236.30084-2-ville.syrjala@linux.intel.com
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
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reg_in_range_table is a useful function that is used in multiple places,
and will be needed for WA_BB implementation later.
Let's move this function and i915_range struct to its own file, as we are
trying to move away from i915_utils files.
v2: move functions to their own file
v3: use correct naming convention
Suggested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Link:
https://lore.kernel.org/r/20251009215210.41000-1-matthew.s.atwood@intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Add a new helper thingy to deal with the pipe prefill latency.
We get three potentially useful thigns out of this:
- skl_prefill_vblank_too_short() used for checking the
actual vblank/guardband length
- skl_prefill_min_guardband() to calculate a suitable guardband
size based on some worst case scaling/etc. estimates
- skl_prefill_min_cdclk() used to calculate a minimum cdclk
frequency required for very small vblank lengths (in case the
otherwise computed minimum cdclk doesn't result in fast enough
prefill).
The internal arithmetic is done terms of scanlines using .16
binary fixed point representation.
v2: Add the missing <<16 for framestart_delay
Drop the cdclk_state stuff in favor of crtc_state->min_cdclk
Rename to skl_prefill since this is skl+ only
Use intel_crtc_vblank_length() instead of hand rolling it
memset(0) in prefill_init()
Reviewed-by: Uma Shankar <uma.shankar@intel.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20251014191808.12326-9-ville.syrjala@linux.intel.com
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Luca Abeni reported this:
| BUG: scheduling while atomic: kworker/u8:2/15203/0x00000003
| CPU: 1 PID: 15203 Comm: kworker/u8:2 Not tainted 4.19.1-rt3 #10
| Call Trace:
| rt_spin_lock+0x3f/0x50
| gen6_read32+0x45/0x1d0 [i915]
| g4x_get_vblank_counter+0x36/0x40 [i915]
| trace_event_raw_event_i915_pipe_update_start+0x7d/0xf0 [i915]
The tracing events use trace_intel_pipe_update_start() among other events
use functions acquire spinlock_t locks which are transformed into
sleeping locks on PREEMPT_RT. A few trace points use
intel_get_crtc_scanline(), others use ->get_vblank_counter() wich also
might acquire a sleeping locks on PREEMPT_RT.
At the time the arguments are evaluated within trace point, preemption
is disabled and so the locks must not be acquired on PREEMPT_RT.
Based on this I don't see any other way than disable trace points on
PREMPT_RT.
[mlankhorst]
The original patch was insufficient, and since the tracing
infrastructure does not allow for partial disabling of tracepoints.
Completely disable tracing for the entire i915 driver in PREEMPT_RT,
a separate fix for display tracepoints on xe is added to make those
work.
Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reported-by: Luca Abeni <lucabe72@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Co-developed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/20250828090944.101069-1-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
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Move the VLV clock related functions to their own file.
v2: Rebase
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com> # v1
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://lore.kernel.org/r/0bc4a930f3e364c4fc37479f56bf07ccee854fcc.1757688216.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Move timer related utilities from i915_utils.[ch] to separate new files
i915_timer_util.[ch]. Clean up related includes.
Note: Arguably none of this should exist in i915 in the first place. At
least isolate it better.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/0a83d9489626121dcefcd4c1a05317399b5708f3.1757582214.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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intel_bo.[ch] is not the appropriate location for the panic
functionality. Split out intel_panic.[ch] and xe_panic.c in i915 and
xe. Keep the function names for now.
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Maarten Lankhorst <dev@lankhorst.se>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/d98b831a011a028ffd33ce99b0ba62be061ee235.1756835342.git.jani.nikula@intel.com
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Provide the lower level code for PIPEDMC based flip queue.
We'll use the so called semi-full flip queue mode where the
PIPEDMC will start the provided DSB on a scanline a little
ahead of the vblank. We need to program the triggering scanline
early enough so that the DSB has enough time to complete writing
all the double buffered registers before they get latched (at
start of vblank).
The firmware implements several queues:
- 3 "plane queues" which execute a single DSB per entry
- 1 "general queue" which can apparently execute 2 DSBs per entry
- 1 vestigial "fast queue" that replaced the "simple flip queue"
on ADL+, but this isn't supposed to be used due to issues.
But we only need a single plane queue really, and we won't actually
use it as a real queue because we don't allow queueing multiple commits
ahead of time. So the whole thing is perhaps useless. I suppose
there migth be some power saving benefits if we would get the flip
scheduled by userspace early and then could keep some hardware powered
off a bit longer until the DMC kicks off the flipq programming. But that
is pure speculation at this time and needs to be proven.
The code to hook up the flip queue into the actual atomic commit
path will follow later.
TODO: need to think how to do the "wait for DMC firmware load" nicely
need to think about VRR and PSR
etc.
v2: Don't write DMC_FQ_W2_PTS_CFG_SEL on pre-lnl
Don't oops at flipq init if there is no dmc
v3: Adapt to PTL+ flipq changes (different queue entry
layout, different trigger event, need VRR TG)
Use the actual CDCLK frequency
Ask the DSB code how long things are expected to take
v3: Adjust the cdclk rounding (docs are 100% vague, Windows
rounds like this)
Initialize some undocumented magic DMC variables on PTL
v4: Use PIPEDMC_FQ_STATUS for busy check (the busy bit in
PIPEDMC_FQ_CTRL is apparently gone on LNL+)
Based the preempt timeout on the max exec time
Preempt before disabling the flip queue
Order the PIPEDMC_SCANLINECMP* writes a bit more carefully
Fix some typos
v5: Try to deal with some clang-20 div-by-zero false positive (Nathan)
Add some docs (Jani)
Cc: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
epr
Link: https://patchwork.freedesktop.org/patch/msgid/20250624170049.27284-5-ville.syrjala@linux.intel.com
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It's all atomic, no need to emphasize this.
v2: Also update Documentation/gpu/i915.rst (Gustavo)
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/ba5f304e9fe71723191d872e6828d461e1a572bd.1750147992.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Sync to v6.16-rc1, among other things to get the fixed size GENMASK_U*()
and BIT_U*() macros.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The LPT/WPT SBI is arguably part of south display, and it's only used by
intel_pch_refclk.c anyway. Move it under display/.
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/341268d633e9705bc582f1cc985dc4554e39d87d.1748343520.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Pull drm updates from Dave Airlie:
"As part of building up nova-core/nova-drm pieces we've brought in some
rust abstractions through this tree, aux bus being the main one, with
devres changes also in the driver-core tree. Along with the drm core
abstractions and enough nova-core/nova-drm to use them. This is still
all stub work under construction, to build the nova driver upstream.
The other big NVIDIA related one is nouveau adds support for
Hopper/Blackwell GPUs, this required a new GSP firmware update to
570.144, and a bunch of rework in order to support multiple fw
interfaces.
There is also the introduction of an asahi uapi header file as a
precursor to getting the real driver in later, but to unblock
userspace mesa packages while the driver is trapped behind rust
enablement.
Otherwise it's the usual mixture of stuff all over, amdgpu, i915/xe,
and msm being the main ones, and some changes to vsprintf.
new drivers:
- bring in the asahi uapi header standalone
- nova-drm: stub driver
rust dependencies (for nova-core):
- auxiliary
- bus abstractions
- driver registration
- sample driver
- devres changes from driver-core
- revocable changes
core:
- add Apple fourcc modifiers
- add virtio capset definitions
- extend EXPORT_SYNC_FILE for timeline syncobjs
- convert to devm_platform_ioremap_resource
- refactor shmem helper page pinning
- DP powerup/down link helpers
- extended %p4cc in vsprintf.c to support fourcc prints
- change vsprintf %p4cn to %p4chR, remove %p4cn
- Add drm_file_err function
- IN_FORMATS_ASYNC property
- move sitronix from tiny to their own subdir
rust:
- add drm core infrastructure rust abstractions
(device/driver, ioctl, file, gem)
dma-buf:
- adjust sg handling to not cache map on attach
- allow setting dma-device for import
- Add a helper to sort and deduplicate dma_fence arrays
docs:
- updated drm scheduler docs
- fbdev todo update
- fb rendering
- actual brightness
ttm:
- fix delayed destroy resv object
bridge:
- add kunit tests
- convert tc358775 to atomic
- convert drivers to devm_drm_bridge_alloc
- convert rk3066_hdmi to bridge driver
scheduler:
- add kunit tests
panel:
- refcount panels to improve lifetime handling
- Powertip PH128800T004-ZZA01
- NLT NL13676BC25-03F, Tianma TM070JDHG34-00
- Himax HX8279/HX8279-D DDIC
- Visionox G2647FB105
- Sitronix ST7571
- ZOTAC rotation quirk
vkms:
- allow attaching more displays
i915:
- xe3lpd display updates
- vrr refactor
- intel_display struct conversions
- xe2hpd memory type identification
- add link rate/count to i915_display_info
- cleanup VGA plane handling
- refactor HDCP GSC
- fix SLPC wait boosting reference counting
- add 20ms delay to engine reset
- fix fence release on early probe errors
xe:
- SRIOV updates
- BMG PCI ID update
- support separate firmware for each GT
- SVM fix, prelim SVM multi-device work
- export fan speed
- temp disable d3cold on BMG
- backup VRAM in PM notifier instead of suspend/freeze
- update xe_ttm_access_memory to use GPU for non-visible access
- fix guc_info debugfs for VFs
- use copy_from_user instead of __copy_from_user
- append PCIe gen5 limitations to xe_firmware document
amdgpu:
- DSC cleanup
- DC Scaling updates
- Fused I2C-over-AUX updates
- DMUB updates
- Use drm_file_err in amdgpu
- Enforce isolation updates
- Use new dma_fence helpers
- USERQ fixes
- Documentation updates
- SR-IOV updates
- RAS updates
- PSP 12 cleanups
- GC 9.5 updates
- SMU 13.x updates
- VCN / JPEG SR-IOV updates
amdkfd:
- Update error messages for SDMA
- Userptr updates
- XNACK fixes
radeon:
- CIK doorbell cleanup
nouveau:
- add support for NVIDIA r570 GSP firmware
- enable Hopper/Blackwell support
nova-core:
- fix task list
- register definition infrastructure
- move firmware into own rust module
- register auxiliary device for nova-drm
nova-drm:
- initial driver skeleton
msm:
- GPU:
- ACD (adaptive clock distribution) for X1-85
- drop fictional address_space_size
- improve GMU HFI response time out robustness
- fix crash when throttling during boot
- DPU:
- use single CTL path for flushing on DPU 5.x+
- improve SSPP allocation code for better sharing
- Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550
- Added SAR2130P support
- Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660
- DP:
- switch to new audio helpers
- better LTTPR handling
- DSI:
- Added support for SA8775P
- Added SAR2130P support
- HDMI:
- Switched to use new helpers for ACR data
- Fixed old standing issue of HPD not working in some cases
amdxdna:
- add dma-buf support
- allow empty command submits
renesas:
- add dma-buf support
- add zpos, alpha, blend support
panthor:
- fail properly for NO_MMAP bos
- add SET_LABEL ioctl
- debugfs BO dumping support
imagination:
- update DT bindings
- support TI AM68 GPU
hibmc:
- improve interrupt handling and HPD support
virtio:
- add panic handler support
rockchip:
- add RK3588 support
- add DP AUX bus panel support
ivpu:
- add heartbeat based hangcheck
mediatek:
- prepares support for MT8195/99 HDMIv2/DDCv2
anx7625:
- improve HPD
tegra:
- speed up firmware loading
* tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel: (1627 commits)
drm/nouveau/tegra: Fix error pointer vs NULL return in nvkm_device_tegra_resource_addr()
drm/xe: Default auto_link_downgrade status to false
drm/xe/guc: Make creation of SLPC debugfs files conditional
drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue()
drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read
drm/i915/ptl: Use everywhere the correct DDI port clock select mask
drm/nouveau/kms: add support for GB20x
drm/dp: add option to disable zero sized address only transactions.
drm/nouveau: add support for GB20x
drm/nouveau/gsp: add hal for fifo.chan.doorbell_handle
drm/nouveau: add support for GB10x
drm/nouveau/gf100-: track chan progress with non-WFI semaphore release
drm/nouveau/nv50-: separate CHANNEL_GPFIFO handling out from CHANNEL_DMA
drm/nouveau: add helper functions for allocating pinned/cpu-mapped bos
drm/nouveau: add support for GH100
drm/nouveau: improve handling of 64-bit BARs
drm/nouveau/gv100-: switch to volta semaphore methods
drm/nouveau/gsp: support deeper page tables in COPY_SERVER_RESERVED_PDES
drm/nouveau/gsp: init client VMMs with NV0080_CTRL_DMA_SET_PAGE_DIRECTORY
drm/nouveau/gsp: fetch level shift and PDE from BAR2 VMM
...
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Now that all the VLV IOSF SB unit specific helper users are under
display, relocate the helpers themselves under display as
well. Resurrect the vlv_sideband.[ch] name for this. Make everything
except DPIO helpers static inlines, as their implementations are
trivial.
All of this considerably simplifies the xe compat header.
v2: Rebase
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://lore.kernel.org/r/e86c2498c9f1c1d30f8e83fa5f1c23526b87b9ab.1747061743.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Be more specific in the naming, and follow the existing function naming
pattern of vlv_iosf_sb_*() in the file.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://lore.kernel.org/r/d3d97d34a197ba801c558c3fd72b29f9e5c783af.1747061743.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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As reported by Andy, kernel-doc.py is creating a __pycache__
directory at build time.
Disable creation of __pycache__ for the libraries used by
kernel-doc.py, when excecuted via the build system or via
scripts/find-unused-docs.sh.
Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Closes: https://lore.kernel.org/linux-doc/Z_zYXAJcTD-c3xTe@black.fi.intel.com/
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <158b962ed7cd104f7bbfe69f499ec1cc378864db.1745453655.git.mchehab+huawei@kernel.org>
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The only usage of the "PCH" infra is to detect which South Display
Engine we should be using. Move it under display so we can convert
all its callers towards intel_display struct later.
No functional or code change.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/041e3dee494aa15c22172360f2bdd9b15e4acb00.1744364975.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Add display specific wrappers around the i915 and xe dedicated runtime
PM interfaces. There are no conversions here, just the wrappers.
Implement with_intel_display_rpm() without needing to provide a local
variable, which neatly narrows the scope and hides the type of the
wakeref cookie.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/086b312367fa0fbd8de92e9764117aa7ff4a8cc5.1742483007.git.jani.nikula@intel.com
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The CMTG is a timing generator that runs in parallel with transcoders
timing generators and can be used as a reference for synchronization.
We have observed that we are inheriting from GOP a display configuration
with the CMTG enabled. Because our driver doesn't currently implement
any CMTG sequences, the CMTG ends up still enabled after our driver
takes over.
We need to make sure that the CMTG is not enabled if we are not going to
use it. For that, let's add a partial implementation in our driver that
only cares about disabling the CMTG if it was found enabled during
initial hardware readout. In the future, we can also implement sequences
for using the CMTG if that becomes a needed feature.
For now, we only deal with cases when it is possible to disable the CMTG
without requiring a modeset. For earlier display versions, we simply
skip if we find the CMTG enabled and we can't disable it without a
proper modeset. In the future, we need to properly handle that case.
v2:
- DG2 does not have the CMTG. Update HAS_CMTG() accordingly.
- Update logic to force disabling of CMTG only for initial commit.
v3:
- Add missing changes for v2 that were staged but not committed.
v4:
- Avoid if/else duplication in intel_cmtg_dump_state() by using "n/a"
for CMTG B enabled/disabled string for platforms without it. (Jani)
- Prefer intel_cmtg_readout_hw_state() over intel_cmtg_readout_state().
(Jani)
- Use display struct instead of i915 as first parameter for
TRANS_DDI_FUNC_CTL2(). (Jani)
- Fewer continuation lines in variable declaration/initialization for
better readability. (Jani)
- Coding style improvements. (Jani)
- Use drm_dbg_kms() instead of drm_info() for logging the disabling
of the CMTG.
- Make struct intel_cmtg_state entirely private to intel_cmtg.c.
v5:
- Do the disable sequence as part of the sanitization step after
hardware readout instead of initial modeset commit. (Jani)
- Adapt to commit 15133582465f ("drm/i915/display: convert global state
to struct intel_display") by using a display struct instead of i915
as argument for intel_atomic_global_obj_init().
v6:
- Do not track CMTG state as a global state. (Ville)
- Simplify the driver logic by only disabling the CMTG only on cases
when a modeset is not required. (Ville)
v7:
- Remove the call to drm_WARN_ON() when checking
intel_cmtg_disable_requires_modeset() and use a FIXME in the comment
instead.
- Remove the !HAS_CMTG() guard from intel_cmtg_get_config(), which is
static and its caller is already protected by that same condition.
- Also take the opportunity to put some Bspec references in the commit
trailers section.
v8:
- Use HAS_TRANSCODER() instead of intel_crtc_for_pipe(). (Ville)
- Ensure transcoder power well is enabled before reading
TRANS_DDI_FUNC_CTL2. (Ville)
Bspec: 68915, 49262
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250124173956.46534-1-gustavo.sousa@intel.com
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Add helpers to calculate the necessary parameters for configuring the
HDMI PLL for SNPS MPLLB and C10 PHY.
The pll parameters are computed for desired pixel clock, curve data
and other inputs used for interpolation and finally stored in the
pll_state.
Currently the helper is used to compute PLLs for DG2 SNPS PHY.
Support for computing Plls for C10 PHY is added in subsequent patches.
v2:
-Used kernel types instead of C99 types. (Jani)
-Fixed styling issues and renamed few variables to more meaningful
names. (Jani)
-Added Xe make file changes. (Jani)
-Fixed build errors reported by kernel test robot
v3:
-Renamed helper to align with file name. (Jani)
v4:
-Removed erroraneous comment, and added Bspec# as part of trailer. (Suraj)
-Fixed warning flagged by kernel test robot.
Bspec: 54032
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Khaled Almahallawy <khaled.almahallawy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250120042122.1029481-2-ankit.k.nautiyal@intel.com
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The __to_intel_display() generics require the definition of struct
drm_i915_private i.e. inclusion of i915_drv.h. Add
intel_display_conversion.c with a __i915_to_display() function to do the
conversion without the intel_display_conversion.h having an implicit
dependency on i915_drv.h.
The long term goal is to remove __to_intel_display() and the
intel_display_conversion.[ch] files altoghether, and this is merely a
transitional step to make the dependencies on i915_drv.h explicit.
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/39e99b765b8c1a05d001659c39686a661ac268e2.1732104170.git.jani.nikula@intel.com
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The i915_reg_rw tracing is a small isolated part of i915_trace.h. Its
users are orthogonal to the other i915_trace.h users as well, and its
implementation does not require all the includes of i915_trace.h. Split
i915_reg_rw tracing to separate intel_uncore_trace.[ch].
The main underlying goal is to reduce implicit includes of i915_drv.h
from display code.
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1a3623fbb120adc55bc1cab1e27aca6e55487163.1732104170.git.jani.nikula@intel.com
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Having similar naming convention in intel-family.h and intel_device_info.h
results in redefinition of a few platforms. Define CPU IDs in its own file
to avoid this.
v3: Move file out of gt directory, add kernel doc (Riana)
Rephrase file description (Jani)
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241211115952.1659287-4-raag.jadav@intel.com
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These save & restore functions inside i915_suspend are old display
functions to save and restore a bunch of display related registers.
Move it under display and rename accordantly. Just don't move it
entirely towards intel_display struct yet because it depends
on drm_i915_private for the IS_MOBILE.
While doing this conversion also update the MIT header using
the new SPDX ones.
v2: Fix Makefile and include (Jani)
Removed vga and gmbus (Jani, Ville)
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241113225016.208673-2-rodrigo.vivi@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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The panel fitter code doesn't really have much to do with the
rest of intel_panel.c, so extract it all into its own file.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241016143134.26903-9-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
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Abstract away the nuts and bolts of the SPI vs. PCI ROM
stuff, and hide it all in soc/intel_rom.c so that the
VBT code doesn't have to care about this stuff.
This leaves intel_bios.c with a single codepath that
can focus on the details related to the VBT layout.
This should have no functional changes.
v2: Rebase due to vbt_signature changes
Drop unnecessary cast (Jani)
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240923152453.11230-7-ville.syrjala@linux.intel.com
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intel_dp.c has become huge, over 7k lines. Split out the fairly well
isolated chunk of DP test code to a dedicated file intel_dp_test.[ch].
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/262d565fe59715ba297702b67d4bcca81c736dc0.1726833193.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The display code needs to deal with gem objects, and mostly uses struct
drm_i915_gem_object. That's not great, because for xe we need to
redefine it struct xe_bo during build.
Start a common interface using struct drm_gem_object, with separate
implementations for i915 and xe. For starters, convert i9xx_wm.c to use
it.
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/df6867523a0b5fdd4eb63f657f545603ae6f6e0b.1726589119.git.jani.nikula@intel.com
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The error state capture still handles display info at a too detailed
level. Start abstracting the whole display snapshot capture and printing
at a higher level. Move overlay to display snapshot first.
Use the same nomenclature and style as in xe devcoredump, in preparation
for perhaps some day bolting the snapshots there as well.
v3: Fix build harder for CONFIG_DRM_I915_CAPTURE_ERROR=n
v2: Fix build for CONFIG_DRM_I915_CAPTURE_ERROR=n (kernel test robot)
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ba6a36759600c2d35405c41a0fc9d69f676df77d.1726151571.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Sync to v6.10-rc3.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Recheck the link state after a passing link training, with a 2 sec delay
to account for cases where the link goes bad following the link training
and the sink doesn't report this via an HPD IRQ.
The delayed work added here will be also used by a later patch after a
failed link training to try to retrain the link with unchanged link
params before reducing the link params.
v2: Don't flush an uninitialized delayed work (on HDMI-only DDI ports).
v3:
- Move the helpers to a new intel_encoder.c file, rename them
accordingly. (Ville)
- Add the work to intel_encoder instead of intel_digital_port.
- Call the encoder specific link check function via an encoder hook.
- Flush the link check work during encoder destroy from
intel_dp_encoder_flush_work().
- Flush the link check work during encoder suspend as well.
v4: Call intel_encoder_link_check_init() with a valid encoder pointer.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240610181428.2955658-1-imre.deak@intel.com
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Since commit a61ddb4393ad ("drm: enable (most) W=1 warnings by default
across the subsystem"), most of the extra warnings in the driver
Makefile are redundant. Remove them.
Note that -Wmissing-declarations and -Wmissing-prototypes are always
enabled by default in scripts/Makefile.extrawarn.
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/490931748fa9a1dbac2bceda0c4b778240b10b58.1716471145.git.jani.nikula@intel.com
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Move ALPM feature related code as it will be used for
non-psr panel also thorugh LOBF feature.
v1: Initial version.
v2: Correct ordering in makefile. [Jani]
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240529200742.1694401-3-animesh.manna@intel.com
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Avoid 'constexpr', which is a keyword in C23
- Allow 'dtbs_check' and 'dt_compatible_check' run independently of
'dt_binding_check'
- Fix weak references to avoid GOT entries in position-independent code
generation
- Convert the last use of 'optional' property in arch/sh/Kconfig
- Remove support for the 'optional' property in Kconfig
- Remove support for Clang's ThinLTO caching, which does not work with
the .incbin directive
- Change the semantics of $(src) so it always points to the source
directory, which fixes Makefile inconsistencies between upstream and
downstream
- Fix 'make tar-pkg' for RISC-V to produce a consistent package
- Provide reasonable default coverage for objtool, sanitizers, and
profilers
- Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.
- Remove the last use of tristate choice in drivers/rapidio/Kconfig
- Various cleanups and fixes in Kconfig
* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits)
kconfig: use sym_get_choice_menu() in sym_check_prop()
rapidio: remove choice for enumeration
kconfig: lxdialog: remove initialization with A_NORMAL
kconfig: m/nconf: merge two item_add_str() calls
kconfig: m/nconf: remove dead code to display value of bool choice
kconfig: m/nconf: remove dead code to display children of choice members
kconfig: gconf: show checkbox for choice correctly
kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
Makefile: remove redundant tool coverage variables
kbuild: provide reasonable defaults for tool coverage
modules: Drop the .export_symbol section from the final modules
kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
kconfig: use sym_get_choice_menu() in conf_write_defconfig()
kconfig: add sym_get_choice_menu() helper
kconfig: turn defaults and additional prompt for choice members into error
kconfig: turn missing prompt for choice members into error
kconfig: turn conf_choice() into void function
kconfig: use linked list in sym_set_changed()
kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
kconfig: gconf: remove debug code
...
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Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for
checked-in source files. It is merely a convention without any functional
difference. In fact, $(obj) and $(src) are exactly the same, as defined
in scripts/Makefile.build:
src := $(obj)
When the kernel is built in a separate output directory, $(src) does
not accurately reflect the source directory location. While Kbuild
resolves this discrepancy by specifying VPATH=$(srctree) to search for
source files, it does not cover all cases. For example, when adding a
header search path for local headers, -I$(srctree)/$(src) is typically
passed to the compiler.
This introduces inconsistency between upstream and downstream Makefiles
because $(src) is used instead of $(srctree)/$(src) for the latter.
To address this inconsistency, this commit changes the semantics of
$(src) so that it always points to the directory in the source tree.
Going forward, the variables used in Makefiles will have the following
meanings:
$(obj) - directory in the object tree
$(src) - directory in the source tree (changed by this commit)
$(objtree) - the top of the kernel object tree
$(srctree) - the top of the kernel source tree
Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced
with $(src).
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
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Linux 6.9-rc5
I've had a persistent msm failure on clang, and the fix is in fixes
so just pull it back to fix that.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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In order to reduce the DC5->DC2 restore time, wakelocks have been
introduced in DMC so the driver can tell it when registers and other
memory areas are going to be accessed and keep their respective blocks
awake.
Implement this in the driver by adding the concept of DMC wakelocks.
When the driver needs to access memory which lies inside pre-defined
ranges, it will tell DMC to set the wakelock, access the memory, then
wait for a while and clear the wakelock.
The wakelock state is protected in the driver with spinlocks to
prevent concurrency issues.
BSpec: 71583
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240412094148.808179-2-luciano.coelho@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Enable only one CCS engine by default with all the compute sices
allocated to it.
While generating the list of UABI engines to be exposed to the
user, exclude any additional CCS engines beyond the first
instance.
This change can be tested with igt i915_query.
Fixes: d2eae8e98d59 ("drm/i915/dg2: Drop force_probe requirement")
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Chris Wilson <chris.p.wilson@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: <stable@vger.kernel.org> # v6.2+
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Michal Mrozek <michal.mrozek@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240328073409.674098-4-andi.shyti@linux.intel.com
(cherry picked from commit 2bebae0112b117de7e8a7289277a4bd2403b9e17)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Use localized __diag_push(), __diag_ignore_all() with rationale, and
__diag_pop() for specific initializations instead of blanket disabling
of -Woverride-init across several files.
Note that we've tried this before with commit 88e9664434c9 ("drm/i915:
use localized __diag_ignore_all() instead of per file") and reverted in
commit 290d16104575 ("Revert "drm/i915: use localized
__diag_ignore_all() instead of per file""). The issue turned out to be
in __diag_ignore_all() and it was fixed by commit 689b097a06ba
("compiler-gcc: Suppress -Wmissing-prototypes warning for all supported
GCC"). So we should be able to pull this off now.
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240328102455.944131-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The -Woverride-init warn about code that may be intentional or not,
but the inintentional ones tend to be real bugs, so there is a bit of
disagreement on whether this warning option should be enabled by default
and we have multiple settings in scripts/Makefile.extrawarn as well as
individual subsystems.
Older versions of clang only supported -Wno-initializer-overrides with
the same meaning as gcc's -Woverride-init, though all supported versions
now work with both. Because of this difference, an earlier cleanup of
mine accidentally turned the clang warning off for W=1 builds and only
left it on for W=2, while it's still enabled for gcc with W=1.
There is also one driver that only turns the warning off for newer
versions of gcc but not other compilers, and some but not all the
Makefiles still use a cc-disable-warning conditional that is no
longer needed with supported compilers here.
Address all of the above by removing the special cases for clang
and always turning the warning off unconditionally where it got
in the way, using the syntax that is supported by both compilers.
Fixes: 2cd3271b7a31 ("kbuild: avoid duplicate warning options")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Add support to enable the DP tunnel BW allocation mode. Follow-up
patches will call the required helpers added here to prepare for a
modeset on a link with DP tunnels, the last change in the patchset
actually enabling BWA.
With BWA enabled, the driver will expose the full mode list a display
supports, regardless of any BW limitation on a shared (Thunderbolt)
link. Such BW limits will be checked against only during a modeset, when
the driver has the full knowledge of each display's BW requirement.
If the link BW changes in a way that a connector's modelist may also
change, userspace will get a hotplug notification for all the connectors
sharing the same link (so it can adjust the mode used for a display).
The BW limitation can change at any point, asynchronously to modesets
on a given connector, so a modeset can fail even though the atomic check
for it passed. In such scenarios userspace will get a bad link
notification and in response is supposed to retry the modeset.
v2:
- Fix old vs. new connector state in intel_dp_tunnel_atomic_check_state().
(Ville)
- Fix propagating the error from
intel_dp_tunnel_atomic_compute_stream_bw(). (Ville)
- Move tunnel==NULL checks from driver to DRM core helpers. (Ville)
- Simplify return flow from intel_dp_tunnel_detect(). (Ville)
- s/dp_tunnel_state/inherited_dp_tunnels (Ville)
- Simplify struct intel_dp_tunnel_inherited_state. (Ville)
- Unconstify object pointers (vs. states) where possible. (Ville)
- Init crtc_state while declaring it in check_group_state(). (Ville)
- Join obj->base.id, obj->name arg lines in debug prints to reduce LOC.
(Ville)
- Add/rework intel_dp_tunnel_atomic_alloc_bw() to prepare for moving the
BW allocation from encoder hooks up to intel_atomic_commit_tail()
later in the patchset.
- Disable BW alloc mode during system suspend.
- Allocate the required BW for all tunnels during system resume.
- Add intel_dp_tunnel_atomic_clear_stream_bw() instead of the open-coded
sequence in a follow-up patch.
- Add function documentation to all exported functions.
- Add CONFIG_USB4 dependency to CONFIG_DRM_I915_DP_TUNNEL.
v3:
- Rebase on intel_dp_get_active_pipes() change in previous patch.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240226185246.1276018-4-imre.deak@intel.com
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-Wstringop-overflow is broken on GCC11. In future changes it will
be moved to the normal C flags in the top level Makefile (out of
Makefile.extrawarn), but accounting for the compiler support.
Just remove it out of i915's forced extra warnings, preparing for the
upcoming change and avoiding build warnings to show up.
Fixes: 2250c7ead8ad ("drm/i915: enable W=1 warnings by default")
References: https://lore.kernel.org/all/45ad1d0f-a10f-483e-848a-76a30252edbe@paulmck-laptop/
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240112154912.1775199-1-lucas.demarchi@intel.com
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We are preparing for Xe driver. Backing object implementation is differing
between i915 and Xe. Split i915 specific code into separate source file
built only for i915.
v9:
- Use ERR_CAST
v8:
- return original error code from intel_fb_bo_lookup_valid_bo on failure
v7:
- drop #include <drm/drm_plane.h>
- s/user_mode_cmd/mode_cmd/
- Use passed i915 pointer instead of to_i915(obj->base.dev)
v6: Add missing intel_fb_bo.[ch]
v5:
- Keep drm_any_plane_has_format check in intel_fb.c
- Use mode_cmd instead of user_mode_cmd for intel_fb_bo_lookup_valid_bo
v4: Move drm_any_plane_has_format check into intel_fb_bo.c
v3: Fix failure handling in intel_framebuffer_init
v2: Couple of fixes to error value handling
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231203114840.841311-5-jouni.hogander@intel.com
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