Commit Graph

107672 Commits

Author SHA1 Message Date
Aurabindo Pillai
7da55c27e7 drm/amd/display: Remove incorrect FP context start
All the DC_FP_START/END should be used before call anything from DML2,
for this reason, the use of those guards inside DML it is not correct.
This commit removes two unnecessary DC_FP_START/END from a dml2
function.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:40:39 -04:00
Aurabindo Pillai
e7595e3740 drm/amd/display: Use DCN 410 includes for DCN401
DCN401 is using DCN 320 headers, which does not have all the right
registers for DCN401. This commit just replace DCN320 includes with the
one from DCN410.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:40:39 -04:00
Aurabindo Pillai
b7a08552e1 drm/amd/display: Remove unnecessary HPD entry for DCN401
Drop the extra HPD irq entry for DCN401.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:40:39 -04:00
Rodrigo Siqueira
a00e85713c drm/amd/display: Update DML2.1 generated code
Most of the DML code is generated, and it is necessary to update some
parts of it from time to time. This commit brings the latest generated
code for DML 2.1.

Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:39:57 -04:00
Pinninti
91b586cc05 drm/amd/display: Refactor HUBP into component folder.
[why]
cleaning up the code refactor requires hubp to be in its own component.

[how]
move all files under newly created hubp folder and fixing the makefiles.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Pinninti <bpinnint@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:39:33 -04:00
Rodrigo Siqueira
ddef2cfbb8 drm/amd/display: Remove unused code
This commit removes some unused code with the required adjustments.

Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:39:33 -04:00
Samson Tam
2998bccfa4 drm/amd/display: Enable ISHARP support for DCN401
[Why]
Enable sharpener support for DCN401

[How]
- Removed memcmp check that was preventing ISHARP from being enabled.
- Add missing ISHARP register defines, masks, and writes.
- Add programming of Blur and Scale coefficients.
- Program FMT_MODE and NLDELTA registers based on LLS_PREF and pixel
- format
- Only enable ISHARP for YUV420
- Add disabling of ISHARP
- Add debug flags and registry keys for debugging ISHARP.
- Set default to medium level

Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:39:33 -04:00
Sridevi
c2edec1676 drm/amd/display: Fix incorrect cursor position for dcn401
[Why]
Incorrect cursor position calculation in some scenarios.  Also for
mirror and rotation cases.

[How]
Fix for incorrect cursor position.  Added new test scenarios for diags
cursor test.  Updated CRC for few of the diags cursor test scenarios.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Sridevi <sarvinde@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:38:41 -04:00
Yang Wang
3c603b1fa8 drm/amdgpu: fix typo in amdgpu_ras_aca_sysfs_read() function
fix typo "info.ue_count" in amdgpu_ras_aca_sysfs_read() function.

Fixes: 865d339763 ("drm/amdgpu: add aca deferred error type support")
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:09:48 -04:00
Jesse Zhang
511a623fb4 drm/amdgpu: fix dereference null return value for the function amdgpu_vm_pt_parent
The pointer parent may be NULLed by the function amdgpu_vm_pt_parent.
To make the code more robust, check the pointer parent.

Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:09:41 -04:00
David (Ming Qiang) Wu
ab47fa8358 drm/amd/amdgpu: add AMD_PG_SUPPORT_VCN_DPG flag
AMD_PG_SUPPORT_VCN_DPG is needed for secure parts
and should/can be enabled by now.

Signed-off-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Reviewed-by: Sonny Jiang <sonjiang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:09:35 -04:00
Alex Deucher
f2a1fbdd1f drm/amdgpu: drop MES 10.1 support v3
It was an enablement vehicle for MES 11 and was never
productized.  Remove it.

v2: drop additional checks in the GFX10 code.
v3: drop mes_api_def.h

Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:09:01 -04:00
Jiapeng Chong
04c1ea9d64 drm/amd/display: clean up some inconsistent indenting
No functional modification involved.

drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:5200 dc_power_down_on_boot() warn: inconsistent indenting.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9166
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:08:57 -04:00
Alex Deucher
ca0bfaad4f drm/amdgpu: silence UBSAN warning
Convert a variable sized array from [1] to [].

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:08:53 -04:00
Alex Deucher
87dfeb47a5 drm/amdgpu: Adjust logic in amdgpu_device_partner_bandwidth()
Use current speed/width on devices which don't support
dynamic PCIe switching.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3289
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-29 14:08:44 -04:00
Michal Wajdeczko
37ea1aee18 drm/xe: Drop undesired prefix from the platform name
We don't have to use exact names of the enumerators as the
potentially user-facing platform names. When constructing
platform descriptor fields, use the unique platform tag and
add the XE_ prefix only to the generated enum field.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240521142257.756-3-michal.wajdeczko@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-05-29 10:09:01 -07:00
Karthik Poosa
7e4333567d drm/xe/hwmon: Expose card power and energy attributes of BMG
In BMG there are separate registers for card/platform power and
energy.
These are exposed through channel 0 i.e power_1/energy1_xxx.

Signed-off-by: Karthik Poosa <karthik.poosa@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Link: https://lore.kernel.org/r/20240523144351.4040131-3-balasubramani.vivekanandan@intel.com
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240529050758.442056-3-balasubramani.vivekanandan@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2024-05-29 09:35:32 -04:00
Karthik Poosa
e90f7a58e6 drm/xe/hwmon: Add HWMON support for BMG
Add HWMON support for BMG. Exposing the pkg power, current,
energy info.

Signed-off-by: Karthik Poosa <karthik.poosa@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20240523144351.4040131-2-balasubramani.vivekanandan@intel.com
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240529050758.442056-2-balasubramani.vivekanandan@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2024-05-29 09:34:47 -04:00
Maxime Ripard
0c02cebc7f drm/display: Fix HDMI state helper dependency
During the life of the series that introduced the
DRM_DISPLAY_HDMI_STATE_HELPER option, we reworked the Kconfig option
dependency setup to rely on depends on with commit f6d2dc03fa ("drm:
Switch DRM_DISPLAY_HDMI_HELPER to depends on") which got reverted later
on because it was creating too many issues by commit d7c128cb77
("Revert "drm: Switch DRM_DISPLAY_HDMI_HELPER to depends on"").

However, since the series was out of tree at that time,
DRM_DISPLAY_HDMI_STATE_HELPER wasn't properly updated to take the revert
into account and is now creating build issues.

Let's switch the depends on to a select to fix this.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202405290332.Sqtt0ix0-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405290438.TOYhXMIn-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405290803.c3178DYT-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405291109.PQdqc46g-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405291221.a0NStxHE-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405291636.8GgBtK8u-lkp@intel.com/
Fixes: 54cb39e229 ("drm/connector: hdmi: Create an HDMI sub-state")
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240529080013.2325748-1-mripard@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2024-05-29 11:37:03 +02:00
Nirmoy Das
dac81a9adb drm/xe: Add engine name to the engine reset and cat-err log
Add engine name to the engine reset and cat error log
which should be useful while debugging.

v2: Add logical mask and engine class(Matt)
    Use xe_gt_{info|dbg} (Michal)

Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528101445.27688-1-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
2024-05-29 10:57:10 +02:00
Nirmoy Das
a17aceb34e drm/xe: Check empty pinned BO list with lock held.
Use lock that is meant to use for accessing the BO pin list.

Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528115408.22094-1-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
2024-05-29 10:56:47 +02:00
Imre Deak
75800e2e42 drm/i915: Fix audio component initialization
After registering the audio component in i915_audio_component_init()
the audio driver may call i915_audio_component_get_power() via the
component ops. This could program AUD_FREQ_CNTRL with an uninitialized
value if the latter function is called before display.audio.freq_cntrl
gets initialized. The get_power() function also does a modeset which in
the above case happens too early before the initialization step and
triggers the

"Reject display access from task"

error message added by the Fixes: commit below.

Fix the above issue by registering the audio component only after the
initialization step.

Fixes: 87c1694533 ("drm/i915: save AUD_FREQ_CNTRL state at audio domain suspend")
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10291
Cc: stable@vger.kernel.org # v5.5+
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240521143022.3784539-1-imre.deak@intel.com
(cherry picked from commit fdd0b80172)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-29 11:35:48 +03:00
Vidya Srinivas
43e2b37e2a drm/i915/dpt: Make DPT object unshrinkable
In some scenarios, the DPT object gets shrunk but
the actual framebuffer did not and thus its still
there on the DPT's vm->bound_list. Then it tries to
rewrite the PTEs via a stale CPU mapping. This causes panic.

Cc: stable@vger.kernel.org
Reported-by: Shawn Lee <shawn.c.lee@intel.com>
Fixes: 0dc987b699 ("drm/i915/display: Add smem fallback allocation for dpt")
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
[vsyrjala: Add TODO comment]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240520165634.1162470-1-vidya.srinivas@intel.com
(cherry picked from commit 51064d471c)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-29 11:35:43 +03:00
Andi Shyti
ee01b6a386 drm/i915/gt: Fix CCS id's calculation for CCS mode setting
The whole point of the previous fixes has been to change the CCS
hardware configuration to generate only one stream available to
the compute users. We did this by changing the info.engine_mask
that is set during device probe, reset during the detection of
the fused engines, and finally reset again when choosing the CCS
mode.

We can't use the engine_mask variable anymore, as with the
current configuration, it imposes only one CCS no matter what the
hardware configuration is.

Before changing the engine_mask for the third time, save it and
use it for calculating the CCS mode.

After the previous changes, the user reported a performance drop
to around 1/4. We have tested that the compute operations, with
the current patch, have improved by the same factor.

Fixes: 6db31251bb ("drm/i915/gt: Enable only one CCS for compute workload")
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Chris Wilson <chris.p.wilson@linux.intel.com>
Cc: Gnattu OC <gnattuoc@me.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Tested-by: Jian Ye <jian.ye@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Tested-by: Gnattu OC <gnattuoc@me.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240517090616.242529-1-andi.shyti@linux.intel.com
(cherry picked from commit a09d2327a9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-29 11:35:38 +03:00
Dmitry Baryshkov
8c318cb70c drm/panel/lg-sw43408: mark sw43408_backlight_ops as static
Fix sparse warning regarding symbol 'sw43408_backlight_ops' not being
declared.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202404200739.hbWZvOhR-lkp@intel.com/
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Fixes: 069a6c0e94 ("drm: panel: Add LG sw43408 panel driver")
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528-panel-sw43408-fix-v4-2-330b42445bcc@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
2024-05-29 11:35:32 +03:00
Nirmoy Das
659a3062c7 drm/i915/selftests: Set always_coherent to false when reading from CPU
Commit 8d4ba9fc1c ("drm/i915/selftests: Pick correct caching mode.")
was not complete  as for non LLC  sharing platforms cpu read can happen
from LLC which probably doesn't have the latest changes made by GPU.

Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Fixes: 8d4ba9fc1c ("drm/i915/selftests: Pick correct caching mode.")
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240516151403.2875-1-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
(cherry picked from commit 007ed70831)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-29 11:35:32 +03:00
Dmitry Baryshkov
33defcacd2 drm/panel/lg-sw43408: select CONFIG_DRM_DISPLAY_DP_HELPER
This panel driver uses DSC PPS functions and as such depends on the
DRM_DISPLAY_DP_HELPER. Select this symbol to make required functions
available to the driver.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202404200800.kYsRYyli-lkp@intel.com/
Fixes: 069a6c0e94 ("drm: panel: Add LG sw43408 panel driver")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528-panel-sw43408-fix-v4-1-330b42445bcc@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
2024-05-29 11:35:32 +03:00
Arnd Bergmann
d4f36db623 drm/i915/guc: avoid FIELD_PREP warning
With gcc-7 and earlier, there are lots of warnings like

In file included from <command-line>:0:0:
In function '__guc_context_policy_add_priority.isra.66',
    inlined from '__guc_context_set_prio.isra.67' at drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:3292:3,
    inlined from 'guc_context_set_prio' at drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:3320:2:
include/linux/compiler_types.h:399:38: error: call to '__compiletime_assert_631' declared with attribute error: FIELD_PREP: mask is not constant
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
...
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c:2422:3: note: in expansion of macro 'FIELD_PREP'
   FIELD_PREP(GUC_KLV_0_KEY, GUC_CONTEXT_POLICIES_KLV_ID_##id) | \
   ^~~~~~~~~~

Make sure that GUC_KLV_0_KEY is an unsigned value to avoid the warning.

Fixes: 77b6f79df6 ("drm/i915/guc: Update to GuC version 69.0.3")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Julia Filipchuk <julia.filipchuk@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430164809.482131-1-julia.filipchuk@intel.com
(cherry picked from commit 364e039827)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-29 11:35:26 +03:00
Chris Wilson
70cb9188ff drm/i915/gt: Disarm breadcrumbs if engines are already idle
The breadcrumbs use a GT wakeref for guarding the interrupt, but are
disarmed during release of the engine wakeref. This leaves a hole where
we may attach a breadcrumb just as the engine is parking (after it has
parked its breadcrumbs), execute the irq worker with some signalers still
attached, but never be woken again.

That issue manifests itself in CI with IGT runner timeouts while tests
are waiting indefinitely for release of all GT wakerefs.

<6> [209.151778] i915: Running live_engine_pm_selftests/live_engine_busy_stats
<7> [209.231628] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_5
<7> [209.231816] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_4
<7> [209.231944] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_3
<7> [209.232056] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_2
<7> [209.232166] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling DC_off
<7> [209.232270] i915 0000:00:02.0: [drm:skl_enable_dc6 [i915]] Enabling DC6
<7> [209.232368] i915 0000:00:02.0: [drm:gen9_set_dc_state.part.0 [i915]] Setting DC state from 00 to 02
<4> [299.356116] [IGT] Inactivity timeout exceeded. Killing the current test with SIGQUIT.
...
<6> [299.356526] sysrq: Show State
...
<6> [299.373964] task:i915_selftest   state:D stack:11784 pid:5578  tgid:5578  ppid:873    flags:0x00004002
<6> [299.373967] Call Trace:
<6> [299.373968]  <TASK>
<6> [299.373970]  __schedule+0x3bb/0xda0
<6> [299.373974]  schedule+0x41/0x110
<6> [299.373976]  intel_wakeref_wait_for_idle+0x82/0x100 [i915]
<6> [299.374083]  ? __pfx_var_wake_function+0x10/0x10
<6> [299.374087]  live_engine_busy_stats+0x9b/0x500 [i915]
<6> [299.374173]  __i915_subtests+0xbe/0x240 [i915]
<6> [299.374277]  ? __pfx___intel_gt_live_setup+0x10/0x10 [i915]
<6> [299.374369]  ? __pfx___intel_gt_live_teardown+0x10/0x10 [i915]
<6> [299.374456]  intel_engine_live_selftests+0x1c/0x30 [i915]
<6> [299.374547]  __run_selftests+0xbb/0x190 [i915]
<6> [299.374635]  i915_live_selftests+0x4b/0x90 [i915]
<6> [299.374717]  i915_pci_probe+0x10d/0x210 [i915]

At the end of the interrupt worker, if there are no more engines awake,
disarm the breadcrumb and go to sleep.

Fixes: 9d5612ca16 ("drm/i915/gt: Defer enabling the breadcrumb interrupt to after submission")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/10026
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: <stable@vger.kernel.org> # v5.12+
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@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/20240423165505.465734-2-janusz.krzysztofik@linux.intel.com
(cherry picked from commit fbad43ecca)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-29 11:35:15 +03:00
Janusz Krzysztofik
647535760a Revert "drm/i915: Remove extra multi-gt pm-references"
This reverts commit 1f33dc0c11.

There was a patch supposed to fix an issue of illegal attempts to free a
still active i915 VMA object when parking a GT believed to be idle,
reported by CI on 2-GT Meteor Lake.  As a solution, an extra wakeref for
a Primary GT was acquired from i915_gem_do_execbuffer() -- see commit
f56fe3e917 ("drm/i915: Fix a VMA UAF for multi-gt platform").

However, that fix occurred insufficient -- the issue was still reported by
CI.  That wakeref was released on exit from i915_gem_do_execbuffer(), then
potentially before completion of the request and deactivation of its
associated VMAs.  Moreover, CI reports indicated that single-GT platforms
also suffered sporadically from the same race.

Since that issue was fixed by another commit f3c71b2ded ("drm/i915/vma:
Fix UAF on destroy against retire race"), the changes introduced by that
insufficient fix were dropped as no longer useful.  However, that series
resulted in another VMA UAF scenario now being triggered in CI.

<4> [260.290809] ------------[ cut here ]------------
<4> [260.290988] list_del corruption. prev->next should be ffff888118c5d990, but was ffff888118c5a510. (prev=ffff888118c5a510)
<4> [260.291004] WARNING: CPU: 2 PID: 1143 at lib/list_debug.c:62 __list_del_entry_valid_or_report+0xb7/0xe0
..
<4> [260.291055] CPU: 2 PID: 1143 Comm: kms_plane Not tainted 6.9.0-rc2-CI_DRM_14524-ga25d180c6853+ #1
<4> [260.291058] Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P LP5x T3 RVP, BIOS MTLPFWI1.R00.3471.D91.2401310918 01/31/2024
<4> [260.291060] RIP: 0010:__list_del_entry_valid_or_report+0xb7/0xe0
...
<4> [260.291087] Call Trace:
<4> [260.291089]  <TASK>
<4> [260.291124]  i915_vma_reopen+0x43/0x80 [i915]
<4> [260.291298]  eb_lookup_vmas+0x9cb/0xcc0 [i915]
<4> [260.291579]  i915_gem_do_execbuffer+0xc9a/0x26d0 [i915]
<4> [260.291883]  i915_gem_execbuffer2_ioctl+0x123/0x2a0 [i915]
...
<4> [260.292301]  </TASK>
...
<4> [260.292506] ---[ end trace 0000000000000000 ]---
<4> [260.292782] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6ca3: 0000 [#1] PREEMPT SMP NOPTI
<4> [260.303575] CPU: 2 PID: 1143 Comm: kms_plane Tainted: G        W          6.9.0-rc2-CI_DRM_14524-ga25d180c6853+ #1
<4> [260.313851] Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P LP5x T3 RVP, BIOS MTLPFWI1.R00.3471.D91.2401310918 01/31/2024
<4> [260.326359] RIP: 0010:eb_validate_vmas+0x114/0xd80 [i915]
...
<4> [260.428756] Call Trace:
<4> [260.431192]  <TASK>
<4> [639.283393]  i915_gem_do_execbuffer+0xd05/0x26d0 [i915]
<4> [639.305245]  i915_gem_execbuffer2_ioctl+0x123/0x2a0 [i915]
...
<4> [639.411134]  </TASK>
...
<4> [639.449979] ---[ end trace 0000000000000000 ]---

We defer actually closing, unbinding and destroying a VMA until next idle
point, or until the object is freed in the meantime.  By postponing the
unbind, we allow for the VMA to be reopened by the client, avoiding the
work required to rebind the VMA.

Starting from commit b0647a5e79 ("drm/i915: Avoid live-lock with
i915_vma_parked()"), we assume that as long as a GT is held idle, no VMA
would be reopened while we destroy them.  That assumption is no longer
true in multi-GT configurations, where a VMA we reopen may be handled by a
GT different from the one that we already keep active via its engine while
we set up an execbuf request.

Restoring the extra GT0 PM wakeref removed from i915_gem_do_execbuffer()
processing path seems to fix this issue.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10608
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Nirmoy Das <nirmoy.das@linux.intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@linux.intel.com>
Fixes: 1f33dc0c11 ("drm/i915: Remove extra multi-gt pm-references")
Link: https://patchwork.freedesktop.org/patch/msgid/20240506180253.96858-2-janusz.krzysztofik@linux.intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 749670a58d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-05-29 11:35:08 +03:00
Maxime Ripard
822f89a409 drm/sun4i: Fix compilation error
Commit ea64761a54 ("drm/sun4i: hdmi: Switch to HDMI connector")
introduced a dependency that got renamed in a previous version, but
wasn't properly updated in that driver. Fix the name of the function.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202405282205.EU7NUoeQ-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202405282248.U2lhPvCK-lkp@intel.com/
Fixes: ea64761a54 ("drm/sun4i: hdmi: Switch to HDMI connector")
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528151056.2104153-1-mripard@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
2024-05-29 10:03:11 +02:00
Adrián Larumbe
3b8407e81e drm/gem-shmem: Add import attachment warning to locked pin function
Commit ec144244a4 ("drm/gem-shmem: Acquire reservation lock in GEM
pin/unpin callbacks") moved locking DRM object's dma reservation to
drm_gem_shmem_object_pin, and made drm_gem_shmem_pin_locked public, so
we need to make sure the not-imported check warning is also added to
the latter.

Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Fixes: a780278472 ("drm/gem: Acquire reservation lock in drm_gem_{pin/unpin}()")
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240523113236.432585-4-adrian.larumbe@collabora.com
2024-05-29 09:30:44 +02:00
Adrián Larumbe
8c2f5dd0c3 drm/lima: Fix dma_resv deadlock at drm object pin time
Commit a780278472 ("drm/gem: Acquire reservation lock in
drm_gem_{pin/unpin}()") moved locking the DRM object's dma reservation to
drm_gem_pin(), but Lima's pin callback kept calling drm_gem_shmem_pin,
which also tries to lock the same dma_resv, leading to a double lock
situation.

As was already done for Panfrost in the previous commit, fix it by
replacing drm_gem_shmem_pin() with its locked variant.

Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Steven Price <steven.price@arm.com>
Fixes: a780278472 ("drm/gem: Acquire reservation lock in drm_gem_{pin/unpin}()")
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Val Packett <val@packett.cool>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240523113236.432585-3-adrian.larumbe@collabora.com
2024-05-29 09:30:39 +02:00
Adrián Larumbe
e57f2187cc drm/panfrost: Fix dma_resv deadlock at drm object pin time
When Panfrost must pin an object that is being prepared a dma-buf
attachment for on behalf of another driver, the core drm gem object pinning
code already takes a lock on the object's dma reservation.

However, Panfrost GEM object's pinning callback would eventually try taking
the lock on the same dma reservation when delegating pinning of the object
onto the shmem subsystem, which led to a deadlock.

This can be shown by enabling CONFIG_DEBUG_WW_MUTEX_SLOWPATH, which throws
the following recursive locking situation:

weston/3440 is trying to acquire lock:
ffff000000e235a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: drm_gem_shmem_pin+0x34/0xb8 [drm_shmem_helper]
but task is already holding lock:
ffff000000e235a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: drm_gem_pin+0x2c/0x80 [drm]

Fix it by replacing drm_gem_shmem_pin with its locked version, as the lock
had already been taken by drm_gem_pin().

Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Steven Price <steven.price@arm.com>
Fixes: a780278472 ("drm/gem: Acquire reservation lock in drm_gem_{pin/unpin}()")
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240523113236.432585-2-adrian.larumbe@collabora.com
2024-05-29 09:30:38 +02:00
Suraj Kandpal
f008baf08d drm/i915/hdcp: Fix IS_METEORLAKE usage for HDCP line rekeying
Replace IS_METEORLAKE usage with a more appropriate macro. While
we are at it also add the stepping restrictions for other platforms.

Fixes: 6a3691ca47 ("drm/i915/hdcp: Disable HDCP Line Rekeying for HDCP2.2 on HDMI")
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240527052118.1624216-2-suraj.kandpal@intel.com
2024-05-29 11:15:10 +05:30
Jouni Högander
fec7efe7bf drm/i915/psr: modify psr status debugfs to support eDP Panel Replay
Some PSR2_CTL bits are applicable for eDP panel replay as well.
Dump this register for eDP Panel Replay as well.

Bspec: 68920

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528114455.175961-6-jouni.hogander@intel.com
2024-05-29 08:34:31 +03:00
Jouni Högander
f0faeb2e70 drm/i915/psr: Move printing PSR mode to own function
intel_psr_status has grown and is about to grow even. Let's split it a bit
and move printing PSR mode to an own function.

v2: s/intel_psr_psr_mode/intel_psr_print_mode/

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528114455.175961-5-jouni.hogander@intel.com
2024-05-29 08:34:31 +03:00
Jouni Högander
1566b50a43 drm/i915/psr: Move printing sink PSR support to own function
intel_psr_status has grown and is about to grow even. Let's split it a bit
and move printing sink psr support to an own function.

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528114455.175961-4-jouni.hogander@intel.com
2024-05-29 08:34:31 +03:00
Jouni Högander
73baf72eb1 drm/i915/psr: Store pr_dpcd in intel_dp
We need pr_dpcd contents for early transport validity check on eDP Panel
Replay and in debugfs interface to dump out panel early transport
capability. Also remove unnecessarily printing out "Panel replay is not
supported by panel"

v2: commit message modified

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528114455.175961-2-jouni.hogander@intel.com
2024-05-29 08:33:14 +03:00
John Harrison
fa171d49e4 drm/xe/guc: Fix uninitialised count in GuC load debug prints
The debug prints about how long the GuC load takes have a loop
counter. However that was neither initialised nor incremented! Plus,
counting loops is no longer meaningful given the wait function returns
early for any change in the status value. So fix it to only count
loops due to actual timeouts.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202405250151.IbH0l8FG-lkp@intel.com/
Fixes: b0ac1b42db ("drm/xe/guc: Port over the slow GuC loading support from i915")
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Oded Gabbay <ogabbay@kernel.org>
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Fei Yang <fei.yang@intel.com>
Cc: intel-xe@lists.freedesktop.org
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240524202603.4011656-1-John.C.Harrison@Intel.com
2024-05-28 14:53:09 -07:00
Pin-yen Lin
336dca397d drm/panel-edp: Add more panels with conservative timings
Same as commit 7c8690d8fc ("drm/panel-edp: Add some panels with
conservative timings"), the 3 panels added in this patch are used by
Mediatek MT8173 Chromebooks and they used to work with the downstream
v4.19 kernel without any specified delay.

These panel IDs were found from in-field reports, but their datahseets
are not available. For BOE 0x0623 and SHP 0x153a, their product names
are retrieved from the EDIDs. The EDID of AUO 0x1999 does not contain
such information, so list as "Unknown" in this patch.

Update these entries with less-conservative timings from other panels of
the same vendor.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240527095511.719825-3-treapking@chromium.org
2024-05-28 13:54:45 -07:00
Pin-yen Lin
e4f9fd9edb drm/panel-edp: Add support for several panels
Add support for the following models:
AUO B140HTN02.0
BOE NT116WHM-N21 V4.1
BOE NT116WHM-N21

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240527095511.719825-2-treapking@chromium.org
2024-05-28 13:52:53 -07:00
Maarten Lankhorst
f73a058be5 Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes
v6.10-rc1 is released, forward from v6.9

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
2024-05-28 22:21:34 +02:00
Douglas Anderson
6afebd850d drm/panel: sony-acx565akm: Don't call disable at remove
It's the responsibility of a correctly written DRM modeset driver to
call drm_atomic_helper_shutdown() at shutdown time and that should be
disabling / unpreparing the panel if needed. Panel drivers shouldn't
be calling these functions themselves.

A recent effort was made to fix as many DRM modeset drivers as
possible [1] [2] [3] and most drivers are fixed now.

A grep through mainline for compatible strings used by this driver
indicates that it is used by TI OMAP boards. The TI OMAP driver
appears to be correctly calling drm_atomic_helper_shutdown() so we can
remove the calls.

[1] https://lore.kernel.org/r/20230901234015.566018-1-dianders@chromium.org
[2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@chromium.org
[3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@chromium.org

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.47.I2513fd6824929a17c1ccd18a797b98a1a1063559@changeid
2024-05-28 13:09:12 -07:00
Douglas Anderson
e28df86aee drm/panel: sony-acx565akm: Don't double-check enabled state in disable
As talked about in commit d2aacaf073 ("drm/panel: Check for already
prepared/enabled in drm_panel"), we want to remove needless code from
panel drivers that was storing and double-checking the
prepared/enabled state. Even if someone was relying on the
double-check before, that double-check is now in the core and not
needed in individual drivers.

The acx565akm seems to do some unique stuff with the "enabled"
state. Specifically:
1. It seems to detect the enabled state based on how the bootloader
   left the panel.
2. It uses the enabled state to prevent certain sysfs files from
   accessing a disabled panel.

We'll leave the "enabled" state tracking for this. However, we can at
least get rid of the double-check when trying to disable.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.46.I6a51b36831a5c7b2b82bccf8c550cf0d076aa541@changeid
2024-05-28 13:09:12 -07:00
Douglas Anderson
718bd8a1a5 drm/panel: sitronix-st7703: Don't call disable at shutdown/remove
It's the responsibility of a correctly written DRM modeset driver to
call drm_atomic_helper_shutdown() at shutdown time and that should be
disabling / unpreparing the panel if needed. Panel drivers shouldn't
be calling these functions themselves.

A recent effort was made to fix as many DRM modeset drivers as
possible [1] [2] [3] and most drivers are fixed now.

The compatible strings used by this driver seem to show up across
boards using a variety of DRM drivers. It appears that the relevant
drivers have been converted, but at least one compatible string
doesn't seem to be found in any mainline dts files so we can't be 100%
sure. If it is found that the DRM modeset driver hasn't been fixed
then this patch could be temporarily reverted until it is.

[1] https://lore.kernel.org/r/20230901234015.566018-1-dianders@chromium.org
[2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@chromium.org
[3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@chromium.org

Cc: Guido Günther <agx@sigxcpu.org>
Cc: Ondřej Jirman <megi@xff.cz>
Cc: Chris Morgan <macromorgan@hotmail.com>
Cc: Frank Oltmanns <frank@oltmanns.dev>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.43.I08ba0d4e2d534c06ab0ede9c148bb14cc7c1a9d7@changeid
2024-05-28 13:09:12 -07:00
Douglas Anderson
3004d2e9cc drm/panel: sitronix-st7703: Stop tracking prepared
As talked about in commit d2aacaf073 ("drm/panel: Check for already
prepared/enabled in drm_panel"), we want to remove needless code from
panel drivers that was storing and double-checking the
prepared/enabled state. Even if someone was relying on the
double-check before, that double-check is now in the core and not
needed in individual drivers.

One thing to note for st7703 is that it has a special "allpixelson"
debugfs file. When this file is written the driver hacks a
disable/unprepare and then a prepare/enable to try to reset the
panel. Potentially that might have been relying on the old booleans we
removed. It'll still "work" because of the checks in the core but it
deserves a comment. This debugfs file didn't appear to be particularly
safe to use even before this patch since it would cause a
disabled/unprepared panel to become prepared/enabled.

Cc: Guido Günther <agx@sigxcpu.org>
Cc: Ondřej Jirman <megi@xff.cz>
Cc: Chris Morgan <macromorgan@hotmail.com>
Cc: Frank Oltmanns <frank@oltmanns.dev>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.42.Ifc436b262d72f1a33ddef10adfd7578d4acb60d8@changeid
2024-05-28 13:09:12 -07:00
Douglas Anderson
ac9e178627 drm/panel: xinpeng-xpp055c272: Don't call unprepare+disable at shutdown/remove
It's the responsibility of a correctly written DRM modeset driver to
call drm_atomic_helper_shutdown() at shutdown time and that should be
disabling / unpreparing the panel if needed. Panel drivers shouldn't
be calling these functions themselves.

A recent effort was made to fix as many DRM modeset drivers as
possible [1] [2] [3] and most drivers are fixed now.

A grep through mainline for compatible strings used by this driver
indicates that it is used by Rockchip boards. The Rockchip driver
appears to be correctly calling drm_atomic_helper_shutdown() so we can
remove the calls.

[1] https://lore.kernel.org/r/20230901234015.566018-1-dianders@chromium.org
[2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@chromium.org
[3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@chromium.org

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.31.Ib97e67a9877070698afbec4f8ede091b2bf89a1f@changeid
2024-05-28 13:09:12 -07:00
Douglas Anderson
4e5e6fa77a drm/panel: xinpeng-xpp055c272: Stop tracking prepared
As talked about in commit d2aacaf073 ("drm/panel: Check for already
prepared/enabled in drm_panel"), we want to remove needless code from
panel drivers that was storing and double-checking the
prepared/enabled state. Even if someone was relying on the
double-check before, that double-check is now in the core and not
needed in individual drivers.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.30.I2145be78ce28327f4588c2c21370f22fd79d28b8@changeid
2024-05-28 13:09:11 -07:00
Douglas Anderson
bc62654df3 drm/panel: simple: Add a comment about unprepare+disable at shutdown/remove
It's the responsibility of a correctly written DRM modeset driver to
call drm_atomic_helper_shutdown() at shutdown time and that should be
disabling / unpreparing the panel if needed. Panel drivers shouldn't
be calling these functions themselves.

A recent effort was made to fix as many DRM modeset drivers as
possible [1] [2] [3] and most drivers are fixed now.

Unfortunately, it's very difficult to know exactly which DRM modeset
drivers are using panel-simple due to the sheer number of panels it
handles. For now, we'll leave the calls and just add a comment to keep
people from copying this code.

[1] https://lore.kernel.org/r/20230901234015.566018-1-dianders@chromium.org
[2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@chromium.org
[3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@chromium.org

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.27.I639183ac987e139092491a94e22d46a5d857580c@changeid
2024-05-28 13:09:11 -07:00