sfrench/cifs-2.6.git
2 years agoMerge tag 'amd-drm-next-5.16-2021-09-27' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Tue, 28 Sep 2021 07:08:21 +0000 (17:08 +1000)]
Merge tag 'amd-drm-next-5.16-2021-09-27' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

amd-drm-next-5.16-2021-09-27:

amdgpu:
- RAS improvements
- BACO fixes
- Yellow Carp updates
- Misc code cleanups
- Initial DP 2.0 support
- VCN priority handling
- Cyan Skillfish updates
- Rework IB handling for multimedia engine tests
- Backlight fixes
- DCN 3.1 power saving improvements
- Runtime PM fixes
- Modifier support for DCC image stores for gfx 10.3
- Hotplug fixes
- Clean up stack related warnings in display code
- DP alt mode fixes
- Display rework for better handling FP code
- Debugfs fixes

amdkfd:
- SVM fixes
- DMA map fixes

radeon:
- AGP fix

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210927212653.4575-1-alexander.deucher@amd.com
Signed-off-by: Dave Airlie <airlied@redhat.com>
2 years agoMerge tag 'drm-misc-next-2021-09-23' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Fri, 24 Sep 2021 03:48:48 +0000 (13:48 +1000)]
Merge tag 'drm-misc-next-2021-09-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.15:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:

Driver Changes:
  - Conversions to dev_err_probe() helper
  - rockchip: Various build improvements, Use
    DRM_BRIDGE_ATTACH_NO_CONNECTOR for LVDS and RGB
  - panel: New panel-edp driver

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210923074522.zaja7mzxeimxf6g3@gilmour
2 years agodrm/amdgpu: make soc15_common_ip_funcs static
Alex Deucher [Fri, 30 Jul 2021 18:46:53 +0000 (14:46 -0400)]
drm/amdgpu: make soc15_common_ip_funcs static

It's not used outside of soc15.c

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/pm: Update intermediate power state for SI
Lijo Lazar [Thu, 23 Sep 2021 03:58:43 +0000 (11:58 +0800)]
drm/amd/pm: Update intermediate power state for SI

Update the current state as boot state during dpm initialization.
During the subsequent initialization, set_power_state gets called to
transition to the final power state. set_power_state refers to values
from the current state and without current state populated, it could
result in NULL pointer dereference.

For ex: on platforms where PCI speed change is supported through ACPI
ATCS method, the link speed of current state needs to be queried before
deciding on changing to final power state's link speed. The logic to query
ATCS-support was broken on certain platforms. The issue became visible
when broken ATCS-support logic got fixed with commit
f9b7f3703ff9 ("drm/amdgpu/acpi: make ATPX/ATCS structures global (v2)").

Bug:https://gitlab.freedesktop.org/drm/amd/-/issues/1698

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Remove all code paths under the EAGAIN path in RAS late init
Candice Li [Wed, 15 Sep 2021 07:14:18 +0000 (15:14 +0800)]
drm/amdgpu: Remove all code paths under the EAGAIN path in RAS late init

All code paths under the EAGAIN path in RAS late init are unused.

Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Consolidate RAS cmd warning messages
John Clements [Thu, 23 Sep 2021 08:36:09 +0000 (16:36 +0800)]
drm/amdgpu: Consolidate RAS cmd warning messages

Explicity post warning if cmd is issued against unsupported IP

Update to latest RAS TA interface

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdkfd: fix svm_migrate_fini warning
Philip Yang [Mon, 20 Sep 2021 21:25:52 +0000 (17:25 -0400)]
drm/amdkfd: fix svm_migrate_fini warning

Device manager releases device-specific resources when a driver
disconnects from a device, devm_memunmap_pages and
devm_release_mem_region calls in svm_migrate_fini are redundant.

It causes below warning trace after patch "drm/amdgpu: Split
amdgpu_device_fini into early and late", so remove function
svm_migrate_fini.

BUG: https://gitlab.freedesktop.org/drm/amd/-/issues/1718

WARNING: CPU: 1 PID: 3646 at drivers/base/devres.c:795
devm_release_action+0x51/0x60
Call Trace:
    ? memunmap_pages+0x360/0x360
    svm_migrate_fini+0x2d/0x60 [amdgpu]
    kgd2kfd_device_exit+0x23/0xa0 [amdgpu]
    amdgpu_amdkfd_device_fini_sw+0x1d/0x30 [amdgpu]
    amdgpu_device_fini_sw+0x45/0x290 [amdgpu]
    amdgpu_driver_release_kms+0x12/0x30 [amdgpu]
    drm_dev_release+0x20/0x40 [drm]
    release_nodes+0x196/0x1e0
    device_release_driver_internal+0x104/0x1d0
    driver_detach+0x47/0x90
    bus_remove_driver+0x7a/0xd0
    pci_unregister_driver+0x3d/0x90
    amdgpu_exit+0x11/0x20 [amdgpu]

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdkfd: handle svm migrate init error
Philip Yang [Fri, 17 Sep 2021 18:32:14 +0000 (14:32 -0400)]
drm/amdkfd: handle svm migrate init error

If svm migration init failed to create pgmap for device memory, set
pgmap type to 0 to disable device SVM support capability.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Updated RAS infrastructure
John Clements [Wed, 22 Sep 2021 06:04:52 +0000 (14:04 +0800)]
drm/amdgpu: Updated RAS infrastructure

Update RAS infrastructure to support RAS query for MCA subblocks

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: move amdgpu_virt_release_full_gpu to fini_early stage
Guchun Chen [Sat, 18 Sep 2021 05:43:41 +0000 (13:43 +0800)]
drm/amdgpu: move amdgpu_virt_release_full_gpu to fini_early stage

adev->rmmio is set to be NULL in amdgpu_device_unmap_mmio to prevent
access after pci_remove, however, in SRIOV case, amdgpu_virt_release_full_gpu
will still use adev->rmmio for access after amdgpu_device_unmap_mmio.
The patch is to move such SRIOV calling earlier to fini_early stage.

Fixes: 07775fc13878 ("drm/amdgpu: Unmap all MMIO mappings")
Cc: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Leslie Shi <Yuliang.Shi@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix wrong format specifier in amdgpu_dm.c
Hayden Goodfellow [Mon, 13 Sep 2021 01:32:09 +0000 (21:32 -0400)]
drm/amd/display: Fix wrong format specifier in amdgpu_dm.c

[Why]
Currently, the 32bit kernel build fails due to an incorrect string
format specifier. ARRAY_SIZE() returns size_t type as it uses sizeof().
However, we specify it in a string as %ld. This causes a compiler error
and causes the 32bit build to fail.

[How]
Change the %ld to %zu as size_t (which sizeof() returns) is an unsigned
integer data type. We use 'z' to ensure it also works with 64bit build.

Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Hayden Goodfellow <Hayden.Goodfellow@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: 3.2.154
Aric Cyr [Mon, 13 Sep 2021 04:05:54 +0000 (00:05 -0400)]
drm/amd/display: 3.2.154

This new DC version brings improvements in the following areas:
- New firmware version
- Fix HPD problems on DCN2
- Fix generic encoder problems and null deferences
- Adjust DCN301 watermark
- Rework dynamic bpp for DCN3x
- Improve link training fallback logic

Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: [FW Promotion] Release 0.0.84
Anthony Koo [Mon, 13 Sep 2021 00:04:13 +0000 (20:04 -0400)]
drm/amd/display: [FW Promotion] Release 0.0.84

Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix null pointer dereference for encoders
Jimmy Kizito [Sun, 12 Sep 2021 15:21:52 +0000 (11:21 -0400)]
drm/amd/display: Fix null pointer dereference for encoders

[Why]
Links which are dynamically assigned link encoders have their link
encoder set to NULL.

[How]
Check that a pointer to a link_encoder object is non-NULL before using
it.

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Creating a fw boot options bit for an upcoming feature
Meenakshikumar Somasundaram [Fri, 10 Sep 2021 15:18:41 +0000 (11:18 -0400)]
drm/amd/display: Creating a fw boot options bit for an upcoming feature

[Why]
Need a bit for x86 driver to enable a FW boot option for an upcoming
feature.

[How]
Added a bit in dmub_fw_boot_options for an upcoming feature.

Reviewed-by: Jimmy Kizito <jimmy.kizito@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: DIG mapping change is causing a blocker
Liu, Zhan [Fri, 10 Sep 2021 18:50:08 +0000 (14:50 -0400)]
drm/amd/display: DIG mapping change is causing a blocker

[Why]
DIG mapping change is causing a blocker

[How]
Revert the change for now. We will re-implement it later.

Reviewed-by: Jimmy Kizito <jimmy.kizito@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Zhan Liu <Zhan.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix B0 USB-C DP Alt mode
Liu, Zhan [Thu, 9 Sep 2021 17:26:37 +0000 (13:26 -0400)]
drm/amd/display: Fix B0 USB-C DP Alt mode

[Why]
Starting from B0, along with RDPCSTX, RDPCSPIPE registers are also used.

[How]
Make sure RDPCSPIPE registers are programmed correctly.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Zhan Liu <Zhan.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Disable mem low power for CM HW block on DCN3.1
Michael Strauss [Wed, 8 Sep 2021 18:39:09 +0000 (14:39 -0400)]
drm/amd/display: Disable mem low power for CM HW block on DCN3.1

[WHY]
Currently causes visible flicker in some scenarios on OLED eDPs

Reviewed-by: Haonan Wang <haonan.wang2@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix issue with dynamic bpp change for DCN3x
Guo, Bing [Tue, 24 Aug 2021 16:08:22 +0000 (12:08 -0400)]
drm/amd/display: Fix issue with dynamic bpp change for DCN3x

Why:
Screen sometimes would have artifacts or blink once at the time when bpp
is dynamically changed.

How:
1. Changed to update PPS infopacket in frame mode instead of immediate mode
   since other updates for bpp change are double-buffered.
2. Changed double-buffering enablement programming for DCN30 as advised by
ASIC team

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Bing Guo <Bing.Guo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Use adjusted DCN301 watermarks
Nikola Cornij [Wed, 8 Sep 2021 02:09:01 +0000 (22:09 -0400)]
drm/amd/display: Use adjusted DCN301 watermarks

[why]
If DCN30 watermark calc is used for DCN301, the calculated values are
wrong due to the data structure mismatch between DCN30 and DCN301.
However, using the original DCN301 watermark values causes underflow.

[how]
- Add DCN21-style watermark calculations
- Adjust DCN301 watermark values to remove the underflow

Reviewed-by: Zhan Liu <zhan.liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Added power down on boot for DCN3
Lai, Derek [Fri, 3 Sep 2021 04:31:17 +0000 (12:31 +0800)]
drm/amd/display: Added power down on boot for DCN3

[Why]
The change of setting a timer callback on boot for 10 seconds is still
working, just lost power down on boot and power down for DCN3.

[How]
Added power down on boot and power down for DCN3.

Reviewed-by: Anthony Koo <anthony.koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Derek Lai <Derek.Lai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix dynamic encoder reassignment
Jimmy Kizito [Thu, 2 Sep 2021 14:01:02 +0000 (10:01 -0400)]
drm/amd/display: Fix dynamic encoder reassignment

[Why]
Incorrect encoder assignments were being used while applying a new state
to hardware.

(1) When committing a new state to hardware requires resetting the
back-end, the encoder assignments of the current or old state should be
used when disabling the back-end; and the encoder assignments for the
next or new state should be used when re-enabling the back-end.

(2) Link training on hot plug could take over an encoder already in use
by another stream without first disabling it.

[How]

(1) Introduce a resource context 'link_enc_cfg_context' which includes:
- a mode to indicate when transitioning from current to next state.
- transient encoder assignments to use during this state transition.

Update the encoder configuration interface to respond to queries about
encoder assignment based on the mode of operation.

(2) Check if an encoder is already in use before attempting to perform
link training on hot plug.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix concurrent dynamic encoder assignment
Jimmy Kizito [Sat, 28 Aug 2021 16:07:11 +0000 (12:07 -0400)]
drm/amd/display: Fix concurrent dynamic encoder assignment

[Why]
Trying to enable multiple displays simultaneously exposed shortcomings
with the algorithm for dynamic link encoder assignment.

The main problems were:
- Assuming stream order remained constant across states would sometimes
lead to invalid DIG encoder assignment.
- Incorrect logic for deciding whether or not a DIG could support a
stream would also sometimes lead to invalid DIG encoder assignment.
- Changes in encoder assignment were wholesale while updating of the
pipe backend is incremental. This would lead to the hardware state not
matching the software state even with valid encoder assignments.

[How]

The following changes fix the identified problems.
- Use stream pointer rather than stream index to track streams across
states.
- Fix DIG compatibility check by examining the link signal type rather
than the stream signal type.
- Modify assignment algorithm to make incremental updates so software
and hardware states remain coherent.

Additionally:
- Add assertions and an encoder assignment validation function
link_enc_cfg_validate() to detect potential problems with encoder
assignment closer to their root cause.
- Reduce the frequency with which the assignment algorithm is executed.
It should not be necessary for fast state validation.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix link training fallback logic
Jimmy Kizito [Wed, 25 Aug 2021 23:12:08 +0000 (19:12 -0400)]
drm/amd/display: Fix link training fallback logic

[Why]
Link training should fail if stream bandwidth exceeds link bandwidth.

[How]
Correct fallback logic and use named variables to make intention clear.

Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix DCN3 B0 DP Alt Mapping
Liu, Zhan [Thu, 2 Sep 2021 19:08:29 +0000 (15:08 -0400)]
drm/amd/display: Fix DCN3 B0 DP Alt Mapping

[Why]
DCN3 B0 has a mux, which redirects PHYC and PHYD to PHYF and PHYG.

[How]
Fix DIG mapping.

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Zhan Liu <Zhan.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: 3.2.153
Aric Cyr [Tue, 7 Sep 2021 00:42:16 +0000 (20:42 -0400)]
drm/amd/display: 3.2.153

Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: [FW Promotion] Release 0.0.83
Anthony Koo [Sat, 4 Sep 2021 15:58:21 +0000 (11:58 -0400)]
drm/amd/display: [FW Promotion] Release 0.0.83

Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Extend w/a for hard hang on HPD to dcn20
Qingqing Zhuo [Wed, 25 Aug 2021 16:29:28 +0000 (12:29 -0400)]
drm/amd/display: Extend w/a for hard hang on HPD to dcn20

[Why]
HPD disable and enable sequences are not mutually exclusive on Linux.
For HPDs that spans under 1s (i.e. HPD low = 1s), part of the disable
sequence (specifically, a request to SMU to lower refclk) could come
right before the call to PHY enablement, causing DMUB to access an
irresponsive PHY and thus a hard hang on the system.

[How]
Disable 48mhz refclk off when there is any HPD status in connected state
for dcn20.

Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Reduce stack size for dml21_ModeSupportAndSystemConfigurationFull
Harry Wentland [Mon, 13 Sep 2021 17:32:50 +0000 (13:32 -0400)]
drm/amd/display: Reduce stack size for dml21_ModeSupportAndSystemConfigurationFull

[Why & How]
With Werror enabled in the kernel we were failing the clang build since
dml21_ModeSupportAndSystemConfigurationFull's stack frame is 1064 when
building with clang, and exceeding the default 1024 stack frame limit.

The culprit seems to be the Pipe struct, so pull the relevant block
out into its own sub-function.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Allocate structs needed by dcn_bw_calc_rq_dlg_ttu in pipe_ctx
Harry Wentland [Wed, 8 Sep 2021 00:22:13 +0000 (20:22 -0400)]
drm/amd/display: Allocate structs needed by dcn_bw_calc_rq_dlg_ttu in pipe_ctx

[Why & How]
dcn_bw_calc_rq_dlg_ttu uses a stack frame great than 1024. To solve this
we could allocate the rq_param, dlg_sys_param, and input structs
dynamically. Since this function is inside a kernel_fpu_begin()/end()
call we want to avoid memory allocation. Instead it's much
safer to pre-allocate these on the pipe_ctx.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Fixes: 3fe617ccafd6 ("Enable '-Werror' by default for all kernel builds")
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Xinhui Pan <Xinhui.Pan@amd.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: llvm@lists.linux.dev
Acked-by: Christian König <christian.koenig@amd.com>
Build-tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix rest of pass-by-value structs in DML
Harry Wentland [Wed, 8 Sep 2021 17:40:28 +0000 (13:40 -0400)]
drm/amd/display: Fix rest of pass-by-value structs in DML

Passing structs adds a lot of overhead. We don't ever want to pass
anything bigger than primitives by value.

This patch fixes these Coverity IDs:
Addresses-Coverity-ID: 1424031: ("Big parameter passed by value")
Addresses-Coverity-ID: 1424055: ("Big parameter passed by value")
Addresses-Coverity-ID: 1424072: ("Big parameter passed by value")
Addresses-Coverity-ID: 1423779: ("Big parameter passed by value")

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Xinhui Pan <Xinhui.Pan@amd.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: llvm@lists.linux.dev
Acked-by: Christian König <christian.koenig@amd.com>
Build-tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Pass all structs in display_rq_dlg_helpers by pointer
Harry Wentland [Wed, 8 Sep 2021 14:21:37 +0000 (10:21 -0400)]
drm/amd/display: Pass all structs in display_rq_dlg_helpers by pointer

Passing structs adds a lot of overhead. We don't ever want to pass
anything bigger than primitives by value.

This patch fixes these Coverity IDs:
Addresses-Coverity-ID: 1423868: ("Big parameter passed by value")
Addresses-Coverity-ID: 1423870: ("Big parameter passed by value")

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Xinhui Pan <Xinhui.Pan@amd.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: llvm@lists.linux.dev
Acked-by: Christian König <christian.koenig@amd.com>
Build-tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Pass display_pipe_params_st as const in DML
Harry Wentland [Tue, 7 Sep 2021 23:40:06 +0000 (19:40 -0400)]
drm/amd/display: Pass display_pipe_params_st as const in DML

[Why]
This neither needs to be on the stack nor passed by value
to each function call. In fact, when building with clang
it seems to break the Linux's default 1024 byte stack
frame limit.

[How]
We can simply pass this as a const pointer.

This patch fixes these Coverity IDs
Addresses-Coverity-ID: 1424031: ("Big parameter passed by value")
Addresses-Coverity-ID: 1423970: ("Big parameter passed by value")
Addresses-Coverity-ID: 1423941: ("Big parameter passed by value")
Addresses-Coverity-ID: 1451742: ("Big parameter passed by value")
Addresses-Coverity-ID: 1451887: ("Big parameter passed by value")
Addresses-Coverity-ID: 1454146: ("Big parameter passed by value")
Addresses-Coverity-ID: 1454152: ("Big parameter passed by value")
Addresses-Coverity-ID: 1454413: ("Big parameter passed by value")
Addresses-Coverity-ID: 1466144: ("Big parameter passed by value")
Addresses-Coverity-ID: 1487237: ("Big parameter passed by value")

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Fixes: 3fe617ccafd6 ("Enable '-Werror' by default for all kernel builds")
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Xinhui Pan <Xinhui.Pan@amd.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: llvm@lists.linux.dev
Acked-by: Christian König <christian.koenig@amd.com>
Build-tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdkfd: fix dma mapping leaking warning
Philip Yang [Tue, 14 Sep 2021 20:33:40 +0000 (16:33 -0400)]
drm/amdkfd: fix dma mapping leaking warning

For xnack off, restore work dma unmap previous system memory page, and
dma map the updated system memory page to update GPU mapping, this is
not dma mapping leaking, remove the WARN_ONCE for dma mapping leaking.

prange->dma_addr store the VRAM page pfn after the range migrated to
VRAM, should not dma unmap VRAM page when updating GPU mapping or
remove prange. Add helper svm_is_valid_dma_mapping_addr to check VRAM
page and error cases.

Mask out SVM_RANGE_VRAM_DOMAIN flag in dma_addr before calling amdgpu vm
update to avoid BUG_ON(*addr & 0xFFFF00000000003FULL), and set it again
immediately after. This flag is used to know the type of page later to
dma unmapping system memory page.

Fixes: 1d5dbfe6c06a ("drm/amdkfd: classify and map mixed svm range pages in GPU")
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdkfd: SVM map to gpus check vma boundary
Philip Yang [Mon, 13 Sep 2021 14:03:36 +0000 (10:03 -0400)]
drm/amdkfd: SVM map to gpus check vma boundary

SVM range may includes multiple VMAs with different vm_flags, if prange
page index is the last page of the VMA offset + npages, update GPU
mapping to create GPU page table with same VMA access permission.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agoMAINTAINERS: fix up entry for AMD Powerplay
Alex Deucher [Fri, 17 Sep 2021 16:05:30 +0000 (12:05 -0400)]
MAINTAINERS: fix up entry for AMD Powerplay

Fix the path to cover both the older powerplay infrastructure
and the newer SwSMU infrastructure.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: fix empty debug macros
Arnd Bergmann [Mon, 20 Sep 2021 12:16:00 +0000 (14:16 +0200)]
drm/amd/display: fix empty debug macros

Using an empty macro expansion as a conditional expression
produces a W=1 warning:

drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c: In function 'dce_aux_transfer_with_retries':
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:775:156: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
  775 |                                                                 "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER");
      |                                                                                                                                                            ^
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:783:155: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
  783 |                                                                 "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK");
      |                                                                                                                                                           ^

Expand it to "do { } while (0)" instead to make the expression
more robust and avoid the warning.

Fixes: 56aca2309301 ("drm/amd/display: Add AUX I2C tracing.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Fix resume failures when device is gone
Andrey Grodzovsky [Fri, 17 Sep 2021 11:18:29 +0000 (07:18 -0400)]
drm/amdgpu: Fix resume failures when device is gone

Problem:
When device goes into suspend and unplugged during it
then all HW programming during resume fails leading
to a bad SW during pci remove handling which follows.
Because device is first resumed and only later removed
we cannot rely on drm_dev_enter/exit here.

Fix:
Use a flag we use for PCIe error recovery to avoid
accessing registres. This allows to successfully complete
pm resume sequence and finish pci remove.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Fix MMIO access page fault
Andrey Grodzovsky [Thu, 16 Sep 2021 16:54:07 +0000 (12:54 -0400)]
drm/amdgpu: Fix MMIO access page fault

Add more guards to MMIO access post device
unbind/unplug

Bug: https://bugs.archlinux.org/task/72092?project=1&order=dateopened&sort=desc&pagenum=1
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: James Zhu <James.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Fix crash on device remove/driver unload
Andrey Grodzovsky [Wed, 15 Sep 2021 19:27:18 +0000 (15:27 -0400)]
drm/amdgpu: Fix crash on device remove/driver unload

Crash:
BUG: unable to handle page fault for address: 00000000000010e1
RIP: 0010:vega10_power_gate_vce+0x26/0x50 [amdgpu]
Call Trace:
pp_set_powergating_by_smu+0x16a/0x2b0 [amdgpu]
amdgpu_dpm_set_powergating_by_smu+0x92/0xf0 [amdgpu]
amdgpu_dpm_enable_vce+0x2e/0xc0 [amdgpu]
vce_v4_0_hw_fini+0x95/0xa0 [amdgpu]
amdgpu_device_fini_hw+0x232/0x30d [amdgpu]
amdgpu_driver_unload_kms+0x5c/0x80 [amdgpu]
amdgpu_pci_remove+0x27/0x40 [amdgpu]
pci_device_remove+0x3e/0xb0
device_release_driver_internal+0x103/0x1d0
device_release_driver+0x12/0x20
pci_stop_bus_device+0x79/0xa0
pci_stop_and_remove_bus_device_locked+0x1b/0x30
remove_store+0x7b/0x90
dev_attr_store+0x17/0x30
sysfs_kf_write+0x4b/0x60
kernfs_fop_write_iter+0x151/0x1e0

Why:
VCE/UVD had dependency on SMC block for their suspend but
SMC block is the first to do HW fini due to some constraints

How:
Since the original patch was dealing with suspend issues
move the SMC block dependency back into suspend hooks as
was done in V1 of the original patches.
Keep flushing idle work both in suspend and HW fini seuqnces
since it's essential in both cases.

Fixes: 859e4659273f1d ("drm/amdgpu: add missing cleanups for more ASICs on UVD/VCE suspend")
Fixes: bf756fb833cbe8 ("drm/amdgpu: add missing cleanups for Polaris12 UVD/VCE on suspend")
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Fix uvd ib test timeout when use pre-allocated BO
xinhui pan [Thu, 16 Sep 2021 01:35:47 +0000 (09:35 +0800)]
drm/amdgpu: Fix uvd ib test timeout when use pre-allocated BO

Now we use same BO for create/destroy msg. So destroy will wait for the
fence returned from create to be signaled. The default timeout value in
destroy is 10ms which is too short.

Lets wait both fences with the specific timeout.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Put drm_dev_enter/exit outside hot codepath
xinhui pan [Wed, 15 Sep 2021 01:08:28 +0000 (09:08 +0800)]
drm/amdgpu: Put drm_dev_enter/exit outside hot codepath

We hit soft hang while doing memory pressure test on one numa system.
After a qucik look, this is because kfd invalid/valid userptr memory
frequently with process_info lock hold.
Looks like update page table mapping use too much cpu time.

perf top says below,
75.81%  [kernel]       [k] __srcu_read_unlock
 6.19%  [amdgpu]       [k] amdgpu_gmc_set_pte_pde
 3.56%  [kernel]       [k] __srcu_read_lock
 2.20%  [amdgpu]       [k] amdgpu_vm_cpu_update
 2.20%  [kernel]       [k] __sg_page_iter_dma_next
 2.15%  [drm]          [k] drm_dev_enter
 1.70%  [drm]          [k] drm_prime_sg_to_dma_addr_array
 1.18%  [kernel]       [k] __sg_alloc_table_from_pages
 1.09%  [drm]          [k] drm_dev_exit

So move drm_dev_enter/exit outside gmc code, instead let caller do it.
They are gart_unbind, gart_map, vm_clear_bo, vm_update_pdes and
gmc_init_pdb0. vm_bo_update_mapping already calls it.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-and-tested-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix crash on device remove/driver unload
Andrey Grodzovsky [Wed, 15 Sep 2021 20:07:49 +0000 (16:07 -0400)]
drm/amd/display: Fix crash on device remove/driver unload

Why:
DC core is being released from DM before it's referenced
from hpd_rx wq destruction code.

How: Move hpd_rx destruction before DC core destruction.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Add modifiers capable of DCC image stores for gfx10_3
Joshua Ashton [Tue, 14 Sep 2021 23:59:48 +0000 (00:59 +0100)]
drm/amd/display: Add modifiers capable of DCC image stores for gfx10_3

Some games, ie. Doom Eternal, present from compute following compute
post-fx and would benefit from having DCC image stores available.

DCN on gfx10_3 doesn't need INDEPENDENT_128B_BLOCKS = 0 so we can expose
these modifiers capable of DCC image stores.

Signed-off-by: Joshua Ashton <joshua@froggi.es>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Handle GFX10_RBPLUS modifiers for dcc_ind_blk
Joshua Ashton [Tue, 14 Sep 2021 23:59:47 +0000 (00:59 +0100)]
drm/amd/display: Handle GFX10_RBPLUS modifiers for dcc_ind_blk

Adds the missing logic to set the correct value of dcc_ind_blk for this tiling version.

Signed-off-by: Joshua Ashton <joshua@froggi.es>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Use dcc_ind_blk value to set register directly
Joshua Ashton [Tue, 14 Sep 2021 23:59:46 +0000 (00:59 +0100)]
drm/amd/display: Use dcc_ind_blk value to set register directly

We don't need to do this workaround if we start setting this value when we fill the plane attributes.

Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/radeon: make array encoded_lanes static
Colin Ian King [Wed, 15 Sep 2021 11:36:11 +0000 (12:36 +0100)]
drm/radeon: make array encoded_lanes static

Don't populate the read-only array encoded_lanes on the stack but instead it
static. Also makes the object code smaller by 97 bytes:

Before:
   text    data    bss     dec    hex filename
  38899    8064      0   46963   b773 ./drivers/gpu/drm/radeon/r600_dpm.o

After:
   text    data    bss     dec    hex filename
  38738    8128      0   46866   b712 ./drivers/gpu/drm/radeon/r600_dpm.o

(gcc version 11.2.0)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Resolve nBIF RAS error harvesting bug
John Clements [Wed, 15 Sep 2021 09:14:12 +0000 (17:14 +0800)]
drm/amdgpu: Resolve nBIF RAS error harvesting bug

Set correct RAS nBIF error query register offsets on aldebaran

Signed-off-by: John Clements <john.clements@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Update PSP TA unload function
Candice Li [Fri, 10 Sep 2021 14:04:54 +0000 (22:04 +0800)]
drm/amdgpu: Update PSP TA unload function

Update PSP TA unload function to use PSP TA context as input argument.

Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Conform ASD header/loading to generic TA systems
Candice Li [Thu, 9 Sep 2021 12:18:48 +0000 (20:18 +0800)]
drm/amdgpu: Conform ASD header/loading to generic TA systems

Update asd_context structure and add asd_initialize function to
conform ASD header/loading to generic TA systems.

Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu/display: add a proper license to dc_link_dp.c
Alex Deucher [Tue, 14 Sep 2021 14:50:47 +0000 (10:50 -0400)]
drm/amdgpu/display: add a proper license to dc_link_dp.c

Was missing.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/display: Fix white screen page fault for gpuvm
Nicholas Kazlauskas [Mon, 13 Sep 2021 18:56:44 +0000 (14:56 -0400)]
drm/amd/display: Fix white screen page fault for gpuvm

[Why]
The "base_addr_is_mc_addr" field was added for dcn3.1 support but
pa_config was never updated to set it to false.

Uninitialized memory causes it to be set to true which results in
address mistranslation and white screen.

[How]
Use memset to ensure all fields are initialized to 0 by default.

Fixes: 64b1d0e8d500 ("drm/amd/display: Add DCN3.1 HWSEQ")
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agoamd/display: enable panel orientation quirks
Simon Ser [Fri, 10 Sep 2021 15:37:41 +0000 (15:37 +0000)]
amd/display: enable panel orientation quirks

This patch allows panel orientation quirks from DRM core to be
used. They attach a DRM connector property "panel orientation"
which indicates in which direction the panel has been mounted.
Some machines have the internal screen mounted with a rotation.

Since the panel orientation quirks need the native mode from the
EDID, check for it in amdgpu_dm_connector_ddc_get_modes.

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Demote TMZ unsupported log message from warning to info
Paul Menzel [Mon, 13 Sep 2021 08:34:11 +0000 (10:34 +0200)]
drm/amdgpu: Demote TMZ unsupported log message from warning to info

As the user cannot do anything about the unsupported Trusted Memory Zone
(TMZ) feature, do not warn about it, but make it informational, so
demote the log level from warning to info.

Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amdgpu: Drop inline from amdgpu_ras_eeprom_max_record_count
Michel Dänzer [Thu, 9 Sep 2021 16:56:28 +0000 (18:56 +0200)]
drm/amdgpu: Drop inline from amdgpu_ras_eeprom_max_record_count

This was unusual; normally, inline functions are declared static as
well, and defined in a header file if used by multiple compilation
units. The latter would be more involved in this case, so just drop
the inline declaration for now.

Fixes compile failure building for ppc64le on RHEL 8:

In file included from ../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h:32,
                 from ../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:33:
../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c: In function ‘amdgpu_ras_recovery_init’:
../drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h:90:17: error: inlining failed in call
 to ‘always_inline’ ‘amdgpu_ras_eeprom_max_record_count’: function body not available
   90 | inline uint32_t amdgpu_ras_eeprom_max_record_count(void);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1985:34: note: called from here
 1985 |         max_eeprom_records_len = amdgpu_ras_eeprom_max_record_count();
      |                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: c84d46707ebb "drm/amdgpu: validate bad page threshold in ras(v3)"
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Michel Dänzer <mdaenzer@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/radeon: pass drm dev radeon_agp_head_init directly
Nirmoy Das [Mon, 13 Sep 2021 08:08:23 +0000 (10:08 +0200)]
drm/radeon: pass drm dev radeon_agp_head_init directly

Pass drm dev directly as rdev->ddev gets initialized later on
at radeon_device_init().

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=214375
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm/amd/pm: fix runpm hang when amdgpu loaded prior to sound driver
Evan Quan [Thu, 9 Sep 2021 03:01:00 +0000 (11:01 +0800)]
drm/amd/pm: fix runpm hang when amdgpu loaded prior to sound driver

Current RUNPM mechanism relies on PMFW to master the timing for BACO
in/exit. And that needs cooperation from sound driver for dstate
change notification for function 1(audio). Otherwise(on sound driver
missing), BACO cannot be kicked in correctly and hang will be observed
on RUNPM exit.

By switching back to legacy message way on sound driver missing,
we are able to fix the runpm hang observed for the scenario below:
amdgpu driver loaded -> runpm suspend kicked -> sound driver loaded

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reported-and-tested-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2 years agodrm: Fix scaling_mode docs
Ville Syrjälä [Wed, 15 Sep 2021 14:23:00 +0000 (17:23 +0300)]
drm: Fix scaling_mode docs

Fix the bad copy-pasta in the scaling_mode docs.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210915142300.15631-1-ville.syrjala@linux.intel.com
Reviewed-by: Simon Ser <contact@emersion.fr>
2 years agodrm/bridge: Move devm_drm_of_get_bridge to bridge/panel.c
Maxime Ripard [Fri, 17 Sep 2021 18:09:25 +0000 (20:09 +0200)]
drm/bridge: Move devm_drm_of_get_bridge to bridge/panel.c

By depending on devm_drm_panel_bridge_add(), devm_drm_of_get_bridge()
introduces a circular dependency between the modules drm (where
devm_drm_of_get_bridge() ends up) and drm_kms_helper (where
devm_drm_panel_bridge_add() is).

Fix this by moving devm_drm_of_get_bridge() to bridge/panel.c and thus
drm_kms_helper.

Fixes: 87ea95808d53 ("drm/bridge: Add a function to abstract away panels")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210917180925.2602266-1-maxime@cerno.tech
2 years agoMerge tag 'drm-misc-next-2021-09-16' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Wed, 22 Sep 2021 05:30:38 +0000 (15:30 +1000)]
Merge tag 'drm-misc-next-2021-09-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for $kernel-version:

UAPI Changes:

Cross-subsystem Changes:
  - dma-buf: Avoid a warning with some allocations, Remove
    DMA_FENCE_TRACE macros

Core Changes:
  - bridge: New helper to git rid of panels in drivers
  - fence: Improve dma_fence_add_callback documentation, Improve
    dma_fence_ops->wait documentation
  - ioctl: Unexport drm_ioctl_permit
  - lease: Documentation improvements
  - fourcc: Add new macro to determine the modifier vendor
  - quirks: Add the Steam Deck, Chuwi HiBook, Chuwi Hi10 Pro, Samsung
    Galaxy Book 10.6, KD Kurio Smart C15200 2-in-1, Lenovo Ideapad D330
  - resv: Improve the documentation
  - shmem-helpers: Allocate WC pages on x86, Switch to vmf_insert_pfn
  - sched: Fix for a timer being canceled too soon, Avoid null pointer
    derefence if the fence is null in drm_sched_fence_free, Convert
    drivers to rely on its dependency tracking
  - ttm: Switch to kerneldoc, new helper to clear all DMA mappings, pool
    shrinker optitimization, Remove ttm_tt_destroy_common, Fix for
    unbinding on multiple drivers

Driver Changes:
  - bochs: New PCI IDs
  - msm: Fence ordering impromevemnts
  - stm: Add layer alpha support, zpos
  - v3d: Fix for a Vulkan CTS failure
  - vc4: Conversion to the new bridge helpers
  - vgem: Use shmem helpers
  - virtio: Support mapping exported vram
  - zte: Remove obsolete driver

  - bridge: Probe improvements for it66121, enable DSI EOTP for anx7625,
    errors propagation improvements for anx7625

  - panels: 60fps mode for otm8009a, New driver for Samsung S6D27A1

Signed-off-by: Dave Airlie <airlied@redhat.com>
# gpg: Signature made Thu 16 Sep 2021 17:30:50 AEST
# gpg:                using EDDSA key 5C1337A45ECA9AEB89060E9EE3EF0D6F671851C5
# gpg: Can't check signature: No public key
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916073132.ptbbmjetm7v3ufq3@gilmour
2 years agoMAINTAINERS: fix typo in DRM DRIVER FOR SAMSUNG S6D27A1 PANELS
Lukas Bulwahn [Tue, 21 Sep 2021 12:21:46 +0000 (14:21 +0200)]
MAINTAINERS: fix typo in DRM DRIVER FOR SAMSUNG S6D27A1 PANELS

Commit ebd8cbf1fb96 ("drm/panel: s6d27a1: Add driver for Samsung S6D27A1
display panel") introduces a new section DRM DRIVER FOR SAMSUNG S6D27A1
PANELS with a minor typo in one of its file entries.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches  F:  driver/gpu/drm/panel/panel-samsung-s6d27a1.c

So, repair the entry and make get_maintainer.pl happy.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210921122146.13132-1-lukas.bulwahn@gmail.com
2 years agodrm/rockchip: remove of_match_ptr() from analogix dp driver
Souptick Joarder [Mon, 7 Jun 2021 18:48:36 +0000 (00:18 +0530)]
drm/rockchip: remove of_match_ptr() from analogix dp driver

Kernel test robot throws below warning when CONFIG_OF
is not set.

>> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:457:34:
warning: unused variable 'rockchip_dp_dt_ids' [-Wunused-const-variable]
   static const struct of_device_id rockchip_dp_dt_ids[] = {

Fixed it by removing of_match_ptr().

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210607184836.3502-1-jrdr.linux@gmail.com
2 years agodrm/rockchip: remove of_match_ptr() from vop_driver_dt_match
Souptick Joarder [Mon, 7 Jun 2021 19:08:00 +0000 (00:38 +0530)]
drm/rockchip: remove of_match_ptr() from vop_driver_dt_match

kernel test robot throws warning when CONFIG_OF not set.

>> drivers/gpu/drm/rockchip/rockchip_vop_reg.c:1038:34:
warning: unused variable 'vop_driver_dt_match' [-Wunused-const-variable]
   static const struct of_device_id vop_driver_dt_match[] = {

Fixed it by removing of_match_ptr().

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210607190800.3992-1-jrdr.linux@gmail.com
2 years agodrm/rockchip: Check iommu itself instead of it's parent for device_is_available
Andy Yan [Sun, 27 Jun 2021 08:47:37 +0000 (16:47 +0800)]
drm/rockchip: Check iommu itself instead of it's parent for device_is_available

When iommu itself is disabled in dts, we should
fallback to non-iommu buffer, check iommu parent
is meanless here.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210627084737.309163-1-andy.yan@rock-chips.com
2 years agodrm/rockchip: dsi: make hstt_table static
Jiapeng Chong [Fri, 6 Aug 2021 02:57:44 +0000 (10:57 +0800)]
drm/rockchip: dsi: make hstt_table static

This symbol is not used outside of dw-mipi-dsi-rockchip.c, so marks
it static.

Fix the following sparse warning:

drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c:646:13: warning: symbol
'hstt_table' was not declared. Should it be static?

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1628218664-14230-1-git-send-email-jiapeng.chong@linux.alibaba.com
2 years agodrm/rockchip: dsi: Fix duplicate included linux/phy/phy.h
Jiapeng Chong [Fri, 20 Aug 2021 10:18:49 +0000 (18:18 +0800)]
drm/rockchip: dsi: Fix duplicate included linux/phy/phy.h

Clean up the following includecheck warning:

./drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c: linux/phy/phy.h is
included more than once.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Fixes: 71f68fe7f121 ("drm/rockchip: dsi: add ability to work as a phy instead of full dsi")
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1629454729-108701-1-git-send-email-jiapeng.chong@linux.alibaba.com
2 years agodrm/rockchip: Make use of the helper function devm_platform_ioremap_resource()
Cai Huoqing [Tue, 31 Aug 2021 13:57:21 +0000 (21:57 +0800)]
drm/rockchip: Make use of the helper function devm_platform_ioremap_resource()

Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210831135721.4726-1-caihuoqing@baidu.com
2 years agodrm/rockchip: add DRM_BRIDGE_ATTACH_NO_CONNECTOR flag to drm_bridge_attach
Alex Bee [Mon, 13 Sep 2021 12:51:08 +0000 (14:51 +0200)]
drm/rockchip: add DRM_BRIDGE_ATTACH_NO_CONNECTOR flag to drm_bridge_attach

Commit a25b988ff83f ("drm/bridge: Extend bridge API to disable connector creation")
added DRM_BRIDGE_ATTACH_NO_CONNECTOR bridge flag and all bridges handle
this flag in some way since then.
Newly added bridge drivers must no longer contain the connector creation and
will fail probing if this flag isn't set.

In order to be able to connect to those newly added bridges as well,
make use of drm_bridge_connector API and have the connector initialized
by the display controller.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210913125108.195704-1-knaerzche@gmail.com
2 years agodrm/rockchip: handle non-platform devices in rockchip_drm_endpoint_is_subdriver
Alex Bee [Tue, 14 Sep 2021 15:07:56 +0000 (17:07 +0200)]
drm/rockchip: handle non-platform devices in rockchip_drm_endpoint_is_subdriver

As discussed at [1] rockchip_drm_endpoint_is_subdriver will currently always
return -ENODEV for non-platform-devices (e.g. external i2c bridges), what
makes them never being considered in rockchip_rgb_init.

As suggested at [1] this additionally adds a of_device_is_available for
the node found, which will work for both platform and non-platform devices.
Also we can return early for non-platform-devices if they are enabled,
as rockchip_sub_drivers contains exclusively platform-devices.

[1] https://lore.kernel.org/all/20210316182753.GA25685@earth.li/

Suggested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914150756.85190-1-knaerzche@gmail.com
2 years agodrm/rockchip: remove unused psr_list{,_lock}
Brian Norris [Wed, 15 Sep 2021 20:50:11 +0000 (13:50 -0700)]
drm/rockchip: remove unused psr_list{,_lock}

Some leftover cleanup from commit 6c836d965bad ("drm/rockchip: Use the
helpers for PSR").

Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210915135007.1.I926ef5cef287047c35a17e363c919599c6ee6e4c@changeid
2 years agoMAINTAINERS: add Andrey as the DRM GPU scheduler maintainer
Alex Deucher [Fri, 17 Sep 2021 16:15:40 +0000 (12:15 -0400)]
MAINTAINERS: add Andrey as the DRM GPU scheduler maintainer

Now that the scheduler is being used by more and more
drivers, we need someone to maintain it.  Andrey has
stepped up to maintain the scheduler.

Cc: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Cc: airlied@gmail.com
Cc: daniel.vetter@ffwll.ch
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210917161540.822282-2-alexander.deucher@amd.com
2 years agodrm/panel-edp: Implement generic "edp-panel"s probed by EDID
Douglas Anderson [Tue, 14 Sep 2021 20:22:02 +0000 (13:22 -0700)]
drm/panel-edp: Implement generic "edp-panel"s probed by EDID

As discussed in the patch ("dt-bindings: drm/panel-simple: Introduce
generic eDP panels") we can actually support probing eDP panels at
runtime instead of hardcoding what panel is connected. Add support to
the panel-edp driver for this.

We'll implement a solution like this:
* We'll read in two delays from the device tree that are used for
  powering up the panel the initial time (to read the EDID).
* In the EDID we can find a 32-bit ID that identifies what panel we've
  found. From this ID we can look up the full set of delays.

After this change we'll still need to add per-panel delays into the
panel-simple driver but we will no longer need to specify exactly
which panel is connected to which board in the device tree. Nicely,
any panels that are only supported this way also don't need to
hardcode mode data since it's guaranteed that we can get that through
the EDID.

This patch will seed the ID-to-delay table with a few panels that I
have access to, many of which are on sc7180-trogdor devices.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.15.Id9c96cba4eba3e5ee519bfb09cd64b39f2490293@changeid
2 years agodrm/panel-edp: Don't re-read the EDID every time we power off the panel
Douglas Anderson [Tue, 14 Sep 2021 20:22:01 +0000 (13:22 -0700)]
drm/panel-edp: Don't re-read the EDID every time we power off the panel

The simple-panel driver is for panels that are not hot-pluggable at
runtime. Let's keep our cached EDID around until driver unload.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.14.Ib810fb3bebd0bd6763e4609e1a6764d06064081e@changeid
2 years agodrm/panel-edp: Fix "prepare_to_enable" if panel doesn't handle HPD
Douglas Anderson [Tue, 14 Sep 2021 20:22:00 +0000 (13:22 -0700)]
drm/panel-edp: Fix "prepare_to_enable" if panel doesn't handle HPD

While cleaning up the descriptions of the delay for eDP panels I
realized that we'd have a bug if any panels need the
"prepare_to_enable" but HPD handling isn't happening in the panel
driver. Let's put in a stopgap to at least make us not violate
timings. This is not perfectly optimal but trying to do better is
hard. At the moment only 2 panels specify this delay and only 30 ms is
at stake. These panels are also currently hooked up with "hpd-gpios"
so effectively this "fix" is just a theoretical fix and won't actually
do anything for any devices currently supported in mainline.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.13.Ia8288d36df4b12770af59ae3ff73ef7e08fb4e2e@changeid
2 years agodrm/panel-edp: hpd_reliable shouldn't be subtraced from hpd_absent
Douglas Anderson [Tue, 14 Sep 2021 20:21:59 +0000 (13:21 -0700)]
drm/panel-edp: hpd_reliable shouldn't be subtraced from hpd_absent

Now that the delays are named / described with eDP-centric names, it
becomes clear that we should really specify the "hpd_reliable" and
"hpd_absent" separately without taking the other into account. Let's
fix it.

This should be a no-op change and just adjust how we specify
things. The actual delays should be the same before and after for the
one panel that currently species both "hpd_reliable" and "hpd_absent".

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.12.I2522235fca3aa6790ede0bf22a93d79a1f694e6b@changeid
2 years agodrm/panel-edp: Better describe eDP panel delays
Douglas Anderson [Tue, 14 Sep 2021 20:21:58 +0000 (13:21 -0700)]
drm/panel-edp: Better describe eDP panel delays

Now that the eDP panel driver only handles eDP panels we can make
better sense of the delays here. Let's describe them in terms of the
standard eDP timing diagram from the eDP spec.

As part of this, it becomes pretty clear that some eDP panels have too
long of a "hpd_reliable_delay". This used to be the "prepare"
delay. It's the fixed delay that we do in the panel driver after
powering on our panel before we look at the HPD signal. To understand
this better, first realize that there could be 3 paths we follow
depending on how HPD is hooked up. Let's walk through them:
1. HPD is handled by the eDP controller driver. Until "recently"
   (commit 48834e6084f1 ("drm/panel-simple: Support hpd-gpios for
   delaying prepare()") in May 2020) this was the only supported
   way. This is supposed to be when the controller driver gets HPD
   straight to a dedicated pin. In this case the controller driver
   should be waiting for HPD in its pre_enable() routine which should
   be called right after the panel's prepare() function is
   called. That means that the old "prepare" delay was only needed as
   a delay after powering the panel but before looking at HPD.
2. HPD is handled via hpd-gpios in the panel. This is much like #1 but
   much easier to follow since all the handling is in the panel
   driver.
3. The no-hpd case. This is also easy to follow.

In any case, even though it seems like some old panel data was using
this incorrectly, let's not touch the old data structures but we'll
add a note indicating that something seems off.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.11.I2d798dd015332661c5895ef744bc8ec5cd2e06ca@changeid
2 years agodrm/panel-edp: Split the delay structure out
Douglas Anderson [Tue, 14 Sep 2021 20:21:57 +0000 (13:21 -0700)]
drm/panel-edp: Split the delay structure out

In the case where we can read an EDID for a panel the only part of the
panel description that can't be found directly from the EDID is the
description of the delays. Let's break the delay structure out so that
we can specify just the delays for panels that are detected by EDID.

This is simple code motion. No functional change is intended.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.10.I24f3646dd09954958645cc05c538909f169bf362@changeid
2 years agodrm/panel-simple: Non-eDP panels don't need "HPD" handling
Douglas Anderson [Tue, 14 Sep 2021 20:21:56 +0000 (13:21 -0700)]
drm/panel-simple: Non-eDP panels don't need "HPD" handling

All of the "HPD" handling added to panel-simple recently was for eDP
panels. Remove it from panel-simple now that panel-edp handles eDP
panels. The "prepare_to_enable" delay only makes sense in the context
of HPD, so remove it too. No non-eDP panels used it anyway.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.9.I77d7a48df0a6585ef2cc2ff140fbe8f236a9a9f7@changeid
2 years agodrm/panel-edp: Move some wayward panels to the eDP driver
Douglas Anderson [Tue, 14 Sep 2021 20:21:55 +0000 (13:21 -0700)]
drm/panel-edp: Move some wayward panels to the eDP driver

Not all panels in panel-simple were marked what type of panel they
were. I searched through ARM/ARM64 Chromebooks or Chromebook-related
reference boards that I was aware of and found some panels that needed
to be moved. I also skimmed for panels that had no mode and were "big"
since it's quite rare to see a small eDP panel. Here's what I found:
* auo,b101ean01 - rk3288-veyron-minnie
* auo,b133htn01 - exynos5800-peach-pi
* auo,b133xtn01 - tegra124-nyan-big
* boe,nv101wxmn51 - rk3399-gru-bob
* innolux,p120zdg-bf1 - sdm845-cheza
* lg,lp079qx1-sp0v - rk3399-evb and similar
* lg,lp097qx1-spa1 - According to commit 0355dde26e52 ("drm/panel:
  simple: Add support for LG LP097QX1-SPA1 panel") this is an eDP
  panel.
* lg,lp129qe - tegra124-venice2
* samsung,lsn122dl01-c01 - According to commit 0330eaf39082
  ("drm/panel: simple: Add support for Samsung LSN122DL01-C01 panel")
  this is an eDP panel.
* samsung,ltn140at29-301 - tegra124-nyan-blaze
* sharp,ld-d5116z01b - According to commit cd5e1cbe1f0a ("drm/panel:
  simple: Add support for Sharp LD-D5116Z01B panel") this is an eDP
  panel.
* sharp,lq123p1jx31 - rk3399-gru-kevin
* starry,kr122ea0sra - rk3399-gru-gru (reference board, not upstream)

I won't promise that I didn't miss a single panel, but that's fairly
complete I think.

I'm not sure the full impact of the fact that they didn't have the
connector type specified, but at least as of commit 9f069c6fbc72
("drm/panel: panel-simple: add default connector_type") we may have
been accidentally thinking of them as DPI panels. We also would
certainly have had a warning. In any case since we don't want to
support anything eDP in the old simple-panel driver, we should move
these.

Cc: Yakir Yang <ykk@rock-chips.com>
Cc: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.8.I84e36f9f86d5d693fce0641a55ddb264a518a947@changeid
2 years agodrm/panel-edp: Split eDP panels out of panel-simple
Douglas Anderson [Tue, 14 Sep 2021 20:21:54 +0000 (13:21 -0700)]
drm/panel-edp: Split eDP panels out of panel-simple

The panel-simple driver handles way too much. Let's start trying to
get a handle on it by splitting out the eDP panels. This patch does
this:

1. Start by copying simple-panel verbatim over to a new driver,
   simple-panel-edp.
2. Rename "panel_simple" to "panel_edp" in the new driver.
3. Keep only panels marked with `DRM_MODE_CONNECTOR_eDP` in the new
   driver. Remove those panels from the old driver.
4. Remove all recent "DP AUX bus" stuff from the old driver. The DP
   AUX bus is only possible on DP panels.
5. Remove all DSI / MIPI related functions from the new driver.
6. Remove bus_format / bus_flags from eDP driver. These things don't
   seem to make any sense for eDP panels so let's stop filling in made
   up stuff.

In the end we end up with a bunch of duplicated code for now. Future
patches will try to address _some_ of this duplicated code though some
of it will be unavoidable.

NOTE: This may not actually move all eDP panels over to the new driver
since not all panels were properly marked with
`DRM_MODE_CONNECTOR_eDP`. A future patch will attempt to move wayward
panels I could identify but even so there may be some missed.

Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.7.I0a2f75bb822d17ce06f5b147734764eeb0c3e3df@changeid
2 years agoarm64: defconfig: Everyone who had PANEL_SIMPLE now gets PANEL_EDP
Douglas Anderson [Tue, 14 Sep 2021 20:21:53 +0000 (13:21 -0700)]
arm64: defconfig: Everyone who had PANEL_SIMPLE now gets PANEL_EDP

In the patch ("drm/panel-simple-edp: Split eDP panels out of
panel-simple") we split the PANEL_SIMPLE driver in 2. Let's enable the
new config.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.6.Ied5c4da3ea36f8c49343176eda342027b6f19586@changeid
2 years agoARM: configs: Everyone who had PANEL_SIMPLE now gets PANEL_EDP
Douglas Anderson [Tue, 14 Sep 2021 20:21:52 +0000 (13:21 -0700)]
ARM: configs: Everyone who had PANEL_SIMPLE now gets PANEL_EDP

In the patch ("drm/panel-simple-edp: Split eDP panels out of
panel-simple") we will split the PANEL_SIMPLE driver in two. By
default let's give everyone who had the old driver enabled the new
driver too. If folks want to opt-out of one or the other they always
can later.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.5.I02250cd7d4799661b068bcc65849a456ed411734@changeid
2 years agodrm/edid: Use new encoded panel id style for quirks matching
Douglas Anderson [Tue, 14 Sep 2021 20:21:51 +0000 (13:21 -0700)]
drm/edid: Use new encoded panel id style for quirks matching

In the patch ("drm/edid: Allow the querying/working with the panel ID
from the EDID") we introduced a different way of working with the
panel ID stored in the EDID. Let's use this new way for the quirks
code.

Advantages of the new style:
* Smaller data structure size. Saves 4 bytes per panel.
* Iterate through quirks structure with just "==" instead of strncmp()
* In-kernel storage is more similar to what's stored in the EDID
  itself making it easier to grok that they are referring to the same
  value.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.4.I6103ce2b16e5e5a842b14c7022a034712b434609@changeid
2 years agodrm/edid: Allow querying/working with the panel ID from the EDID
Douglas Anderson [Tue, 14 Sep 2021 20:21:50 +0000 (13:21 -0700)]
drm/edid: Allow querying/working with the panel ID from the EDID

EDIDs have 32-bits worth of data which is intended to be used to
uniquely identify the make/model of a panel. This has historically
been used only internally in the EDID processing code to identify
quirks with panels.

We'd like to use this panel ID in panel drivers to identify which
panel is hooked up and from that information figure out power sequence
timings. Let's expose this information from the EDID code and also
allow it to be accessed early, before a connector has been created.

To make matching in the panel drivers code easier, we'll return the
panel ID as a 32-bit value. We'll provide some functions for
converting this value back and forth to something more human readable.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.3.I4a672175ba1894294d91d3dbd51da11a8239cf4a@changeid
2 years agodrm/edid: Break out reading block 0 of the EDID
Douglas Anderson [Tue, 14 Sep 2021 20:21:49 +0000 (13:21 -0700)]
drm/edid: Break out reading block 0 of the EDID

A future change wants to be able to read just block 0 of the EDID, so
break it out of drm_do_get_edid() into a sub-function.

This is intended to be a no-op change--just code movement.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.2.I62e76a034ac78c994d40a23cd4ec5aeee56fa77c@changeid
2 years agodt-bindings: drm/panel-simple-edp: Introduce generic eDP panels
Douglas Anderson [Tue, 14 Sep 2021 20:21:48 +0000 (13:21 -0700)]
dt-bindings: drm/panel-simple-edp: Introduce generic eDP panels

eDP panels generally contain almost everything needed to control them
in their EDID. This comes from their DP heritage were a computer needs
to be able to properly control pretty much any DP display that's
plugged into it.

The one big issue with eDP panels and the reason that we need a panel
driver for them is that the power sequencing can be different per
panel.

While it is true that eDP panel sequencing can be arbitrarily complex,
in practice it turns out that many eDP panels are compatible with just
some slightly different delays. See the contents of the bindings file
introduced in this patch for some details.

The fact that eDP panels are 99% probable and that the power
sequencing (especially power up) can be compatible between many panels
means that there's a constant desire to plug multiple different panels
into the same board. This could be for second sourcing purposes or to
support multiple SKUs (maybe a 11" and a 13", for instance).

As discussed [1], it should be OK to support this by adding two
properties to the device tree to specify the delays needed for
powering up the panel the first time. We'll create a new "edp-panel"
bindings file and define the two delays that might need to be
specified. NOTE: in the vast majority of the cases (HPD is hooked up
and isn't glitchy or is debounced) even these delays aren't needed.

[1] https://lore.kernel.org/r/CAD=FV=VZYOMPwQZzWdhJGh5cjJWw_EcM-wQVEivZ-bdGXjPrEQ@mail.gmail.com

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.1.I1116e79d34035338a45c1fc7cdd14a097909c8e0@changeid
2 years agodrm/panfrost: simplify getting .driver_data
Wolfram Sang [Mon, 20 Sep 2021 09:05:17 +0000 (11:05 +0200)]
drm/panfrost: simplify getting .driver_data

We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210920090522.23784-6-wsa+renesas@sang-engineering.com
2 years agopanfrost: make mediatek_mt8183_supplies and mediatek_mt8183_pm_domains static
Jiapeng Chong [Sat, 18 Sep 2021 09:13:34 +0000 (17:13 +0800)]
panfrost: make mediatek_mt8183_supplies and mediatek_mt8183_pm_domains static

This symbol is not used outside of panfrost_drv.c, so marks it static.

Fix the following sparse warning:

drivers/gpu/drm/panfrost/panfrost_drv.c:641:12: warning: symbol
'mediatek_mt8183_supplies' was not declared. Should it be static?

drivers/gpu/drm/panfrost/panfrost_drv.c:642:12: warning: symbol
'mediatek_mt8183_pm_domains' was not declared. Should it be static?

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1631956414-85412-1-git-send-email-jiapeng.chong@linux.alibaba.com
2 years agodrm/v3d: Make use of the helper function devm_platform_ioremap_resource_byname()
Cai Huoqing [Wed, 1 Sep 2021 11:29:40 +0000 (19:29 +0800)]
drm/v3d: Make use of the helper function devm_platform_ioremap_resource_byname()

Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210901112941.31320-1-caihuoqing@baidu.com
2 years agodrm: bridge: it66121: Fix return value it66121_probe
Alex Bee [Sat, 18 Sep 2021 14:04:20 +0000 (16:04 +0200)]
drm: bridge: it66121: Fix return value it66121_probe

Currently it66121_probe returns -EPROBE_DEFER if the there is no remote
endpoint found in the device tree which doesn't seem helpful, since this
is not going to change later and it is never checked if the next bridge
has been initialized yet. It will fail in that case later while doing
drm_bridge_attach for the next bridge in it66121_bridge_attach.

Since the bindings documentation for it66121 bridge driver states
there has to be a remote endpoint defined, its safe to return -EINVAL
in that case.
This additonally adds a check, if the remote endpoint is enabled and
returns -EPROBE_DEFER, if the remote bridge hasn't been initialized
(yet).

Fixes: 988156dc2fc9 ("drm: bridge: add it66121 driver")
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210918140420.231346-1-knaerzche@gmail.com
2 years agoLinux 5.15-rc2 v5.15-rc2
Linus Torvalds [Mon, 20 Sep 2021 00:28:22 +0000 (17:28 -0700)]
Linux 5.15-rc2

2 years agopci_iounmap'2: Electric Boogaloo: try to make sense of it all
Linus Torvalds [Mon, 20 Sep 2021 00:13:35 +0000 (17:13 -0700)]
pci_iounmap'2: Electric Boogaloo: try to make sense of it all

Nathan Chancellor reports that the recent change to pci_iounmap in
commit 9caea0007601 ("parisc: Declare pci_iounmap() parisc version only
when CONFIG_PCI enabled") causes build errors on arm64.

It took me about two hours to convince myself that I think I know what
the logic of that mess of #ifdef's in the <asm-generic/io.h> header file
really aim to do, and rewrite it to be easier to follow.

Famous last words.

Anyway, the code has now been lifted from that grotty header file into
lib/pci_iomap.c, and has fairly extensive comments about what the logic
is.  It also avoids indirecting through another confusing (and badly
named) helper function that has other preprocessor config conditionals.

Let's see what odd architecture did something else strange in this area
to break things.  But my arm64 cross build is clean.

Fixes: 9caea0007601 ("parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoMerge tag 'x86_urgent_for_v5.15_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Sep 2021 20:29:36 +0000 (13:29 -0700)]
Merge tag 'x86_urgent_for_v5.15_rc2' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Prevent a infinite loop in the MCE recovery on return to user space,
   which was caused by a second MCE queueing work for the same page and
   thereby creating a circular work list.

 - Make kern_addr_valid() handle existing PMD entries, which are marked
   not present in the higher level page table, correctly instead of
   blindly dereferencing them.

 - Pass a valid address to sanitize_phys(). This was caused by the
   mixture of inclusive and exclusive ranges. memtype_reserve() expect
   'end' being exclusive, but sanitize_phys() wants it inclusive. This
   worked so far, but with end being the end of the physical address
   space the fail is exposed.

 - Increase the maximum supported GPIO numbers for 64bit. Newer SoCs
   exceed the previous maximum.

* tag 'x86_urgent_for_v5.15_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Avoid infinite loop for copy from user recovery
  x86/mm: Fix kern_addr_valid() to cope with existing but not present entries
  x86/platform: Increase maximum GPIO number for X86_64
  x86/pat: Pass valid address to sanitize_phys()

2 years agoMerge tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 19 Sep 2021 20:22:40 +0000 (13:22 -0700)]
Merge tag 'perf-urgent-2021-09-19' of git://git./linux/kernel/git/tip/tip

Pull perf event fix from Thomas Gleixner:
 "A single fix for the perf core where a value read with READ_ONCE() was
  checked and then reread which makes all the checks invalid. Reuse the
  already read value instead"

* tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  events: Reuse value read using READ_ONCE instead of re-reading it

2 years agoMerge tag 'locking-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Sep 2021 20:11:19 +0000 (13:11 -0700)]
Merge tag 'locking-urgent-2021-09-19' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Thomas Gleixner:
 "A set of updates for the RT specific reader/writer locking base code:

   - Make the fast path reader ordering guarantees correct.

   - Code reshuffling to make the fix simpler"

[ This plays ugly games with atomic_add_return_release() because we
  don't have a plain atomic_add_release(), and should really be cleaned
  up, I think    - Linus ]

* tag 'locking-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwbase: Take care of ordering guarantee for fastpath reader
  locking/rwbase: Extract __rwbase_write_trylock()
  locking/rwbase: Properly match set_and_save_state() to restore_state()

2 years agoMerge tag 'powerpc-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 19 Sep 2021 20:00:23 +0000 (13:00 -0700)]
Merge tag 'powerpc-5.15-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix crashes when scv (System Call Vectored) is used to make a syscall
   when a transaction is active, on Power9 or later.

 - Fix bad interactions between rfscv (Return-from scv) and Power9
   fake-suspend mode.

 - Fix crashes when handling machine checks in LPARs using the Hash MMU.

 - Partly revert a recent change to our XICS interrupt controller code,
   which broke the recently added Microwatt support.

Thanks to Cédric Le Goater, Eirik Fuller, Ganesh Goudar, Gustavo Romero,
Joel Stanley, Nicholas Piggin.

* tag 'powerpc-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/xics: Set the IRQ chip data for the ICS native backend
  powerpc/mce: Fix access error in mce handler
  KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers
  powerpc/64s: system call rfscv workaround for TM bugs
  selftests/powerpc: Add scv versions of the basic TM syscall tests
  powerpc/64s: system call scv tabort fix for corrupt irq soft-mask state

2 years agoMerge tag 'kbuild-fixes-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masah...
Linus Torvalds [Sun, 19 Sep 2021 19:55:12 +0000 (12:55 -0700)]
Merge tag 'kbuild-fixes-v5.15' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix bugs in checkkconfigsymbols.py

 - Fix missing sys import in gen_compile_commands.py

 - Fix missing FORCE warning for ARCH=sh builds

 - Fix -Wignored-optimization-argument warnings for Clang builds

 - Turn -Wignored-optimization-argument into an error in order to stop
   building instead of sprinkling warnings

* tag 'kbuild-fixes-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS
  x86/build: Do not add -falign flags unconditionally for clang
  kbuild: Fix comment typo in scripts/Makefile.modpost
  sh: Add missing FORCE prerequisites in Makefile
  gen_compile_commands: fix missing 'sys' package
  checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file
  checkkconfigsymbols.py: Forbid passing 'HEAD' to --commit

2 years agoMerge tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sun, 19 Sep 2021 19:49:17 +0000 (12:49 -0700)]
Merge tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix ip display in 'perf script' when output type != attr->type.

 - Ignore deprecation warning when using libbpf'sg btf__get_from_id(),
   fixing the build with libbpf v0.6+.

 - Make use of FD() robust in libperf, fixing a segfault with 'perf stat
   --iostat list'.

 - Initialize addr_location:srcline pointer to NULL when resolving
   callchain addresses.

 - Fix fused instruction logic for assembly functions in 'perf
   annotate'.

* tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf bpf: Ignore deprecation warning when using libbpf's btf__get_from_id()
  libperf evsel: Make use of FD robust.
  perf machine: Initialize srcline string member in add_location struct
  perf script: Fix ip display when type != attr->type
  perf annotate: Fix fused instr logic for assembly functions

2 years agodrm/v3d: fix sched job resources cleanup when a job is aborted
Melissa Wen [Thu, 16 Sep 2021 21:27:26 +0000 (22:27 +0100)]
drm/v3d: fix sched job resources cleanup when a job is aborted

In a cl submission, when bin job initialization fails, sched job resources
were already allocated for the render job. At this point,
drm_sched_job_init(render) was done in v3d_job_init but the render job is
aborted before drm_sched_job_arm (in v3d_job_push) happens; therefore, not
only v3d_job_put but also drm_sched_job_cleanup should be called (by
v3d_job_cleanup). A similar issue is addressed for csd and tfu submissions.

The issue was noticed from a review by Iago Toral in a patch that touches
the same part of the code.

Fixes: 916044fac8623 ("drm/v3d: Move drm_sched_job_init to v3d_job_init")
Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916212726.2u2psq2egwy2mdva@mail.igalia.com
2 years agodmascc: use proper 'virt_to_bus()' rather than casting to 'int'
Linus Torvalds [Sun, 19 Sep 2021 17:49:42 +0000 (10:49 -0700)]
dmascc: use proper 'virt_to_bus()' rather than casting to 'int'

The old dmascc driver depends on the legacy ISA_DMA_API, and blindly
just casts the kernel virtual address to 'int' for set_dma_addr().

That works only incidentally, and because the high bits of the address
will be ignored anyway. And on 64-bit architectures it causes warnings.

Admittedly, 64-bit architectures with ISA are basically dead - I think
the only example of this is alpha, and nobody would ever use the dmascc
driver there.  But hey, the fix is easy enough, the end result is
cleaner, and it's yet another configuration that now builds without
warnings.

If somebody actually uses this driver on an alpha and this fixes it for
you, please email me.  Because that is just incredibly bizarre.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>